Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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ELECTRIC RIDING LAWN MOWER
RELATED APPLICATION INFORMATION
[0001] This application is a national phase application of
International Application
Number PCT/CN2018/123856, filed on December 26, 2018, through which this
application claims priority to Chinese Patent Application No. CN
201711457168.5,
filed on December 28, 2017, and Chinese Patent Application No. CN
201810885961.3, filed on August 6, 2018.
TECHNICAL FIELD
[0002] The present disclosure relates to an electric riding machine, in
particular to an
electric riding lawn mower.
BACKGROUND
[0003] As a garden tool, lawn mowers are widely used in the field of
trimming lawn and
vegetation, etc. Existing lawn mowers generally include handheld lawn mowers
and
riding lawn mowers. Among them, handheld lawn mowers are widely used because
of its
advantages such as small size and convenient portability. However, mowing
capacity,
mowing efficiency, and battery life of handheld lawn mowers cannot meet the
needs of
large lawn areas. Therefore, a kind of electric riding lawn mowers has
gradually emerged
on the market. However, the riding lawn mowers currently on the market are
generally
powered by gasoline or diesel, which not only pollutes the environment and
goes against
environmental protection, but also incurs increased maintenance costs because
the
wearing parts in the fuel system needs to be replaced frequently.
SUMMARY
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[0004] In one example, an electric riding lawn mower includes a seat for a
user to ride; a
main frame configured to support the seat; a power output assembly including a
mowing
element for outputting power to realize a mowing function and a first motor
for driving
the mowing element to output power; a walking assembly configured to at least
drive the
electric riding lawn mower to travel in a first straight line on the ground
and including a
second motor to drive the walking assembly; and a power supply device
including one or
more first battery packs to power the electric riding lawn mower; wherein each
of the one
or more first battery packs including: a first battery pack housing; and
battery cells
disposed in the first battery pack housing; wherein the power supply device is
mounted to
the main frame, and at least one of the one or more first battery packs of the
power
supply device forms a pluggable connection with the main frame, and the
battery cells are
lithium batteries.
[0005] In one example, the one or more first battery packs detachably
coupled to the
main frame are also configured to power another power tool.
[0006] In one example, a discharge power of all of the one or more first
battery packs
included in the power supply device is greater than or equal to 2000 W and
less than or
equal to 4000 W.
[0007] In one example, a ratio of the discharge power of a single one of
the one or more
first battery packs to the nominal voltage of a single one of the one or more
first battery
packs is greater than or equal to 10 W/V and less than or equal to 25 W/V.
[0008] In one example, the capacity of a single one of the one or more
first battery packs
is greater than or equal to 130 Wh and less than or equal to 1000 Wh, and a
number of the
one or more first battery packs included in the power supply device is greater
than or
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equal to 4 and less than or equal to 10.
[0009] In one example, the weight of a single one of the one or more first
battery packs is
greater than or equal to 0.1 kg and less than or equal to 4 kg, and a number
of the one or
more first battery packs included in the power supply device is greater than
or equal to 4
and less than or equal to 10.
[0010] In one example, the discharge power of a single one of the one or
more first
battery packs is greater than or equal to 500 W and less than or equal to 6500
W, and a
number of the one or more first battery packs included in the power supply
device is
greater than or equal to 4 and less than or equal to 10.
[0011] In one example, the walking assembly includes: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein the power supply device includes: at least one first
battery
compai __ intent disposed on the rear side of the seat; wherein a number of
the at least one
first battery compaiiments is one or more; and wherein in a direction of the
first straight
line, a distance between a center of a whole constituted by all of the at
least one first
battery compai __ intents disposed on the rear side of the seat along the
direction of the first
straight line and a rotating shaft of the second travelling wheel is less than
or equal to 300
mm.
[0012] In one example, the walking assembly includes: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein the power supply device includes: at least one first
battery
compai __ intent disposed on the rear side of the seat; wherein a number of
the at least one
first battery compai intents is two; and wherein in a direction of the
first straight line, a
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distance between a center of a whole constituted by all of the at least one
first battery
compai __ intents disposed on the rear side of the seat along the direction of
the first straight
line and a rotating shaft of the second travelling wheel is less than or equal
to 300 mm.
[0013] In one example, the walking assembly includes: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein the power supply device includes: at least one first
battery
compai __ intent disposed on the rear side of the seat; wherein a number of
the first battery
compai __ intents is one or more; and wherein in a horizontal direction
perpendicular to the
rotation axis of the second travelling wheel, a distance between a center of a
whole
constituted by all of the at least one first battery compai intents
disposed on the rear side
of the seat along the horizontal direction and a rotating shaft of the second
travelling
wheel is less than or equal to 300 mm.
[0014] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel having a first diameter, and the second travelling
wheel having a
second diameter greater than the first diameter; wherein the power supply
device
includes: at least one first battery compai _________________________ intent
disposed on the rear side of the seat;
wherein a number of the at least one first battery compai ___________ intents
is one or more; and
wherein in a direction perpendicular to the first straight line and
perpendicular to the
second axis, a distance between a center of a whole constituted by all of the
at least one
first battery compai ___________________________________________________
intents disposed on the rear side of the seat and the second axis is less
than or equal to 300 mm.
[0015] In one example, the walking assembly includes: a first travelling
wheel rotatable
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about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel having a first diameter, and the second travelling
wheel having a
second diameter greater than the first diameter; wherein the power supply
device
includes: at least one first battery compai intent disposed on the rear
side of the seat;
wherein a number of the at least one first battery compaitments is one or
more; wherein
in a direction parallel to the second axis, a distance between a center of a
whole
constituted by all of the at least one first battery compai intents
disposed on the rear side
of the seat and a center of two second travelling wheels is less than or equal
to 300 mm.
[0016] In one example, the walking assembly includes: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein the power supply device includes: a first battery
compaitment set
including one or more first battery compaitments, wherein the one or more
first battery
compai __ intent are disposed on the rear side of the seat, and the one or
more first battery
compai __ intent are used for detachably mounting the one or more first
battery packs, and
the one or more first battery packs are further configured to power another
power tool;
wherein a number of the one or more first battery compaitments are one or
more, and the
power supply device is disposed on the rear side of the seat; and wherein in
the a of the
first straight line, a distance between a center of gravity of the power
supply device to
which the one or more first battery packs are mounted and a rotating shaft of
the second
travelling wheel is less than or equal to 300 mm.
[0017] In one example, the walking assembly includes: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein the power supply device includes: a first battery
compaitment set
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including one or more first battery compaitments, wherein the one or more
first battery
compai __ intents are disposed on the rear side of the seat, the one or more
first battery
compai __ intents are used for detachably mounting the one or more first
battery packs, and
the one or more first battery packs are further configured to power another
power tool;
wherein a number of the one or more first battery compaitments is one or more,
and the
power supply device is disposed on the rear side of the seat; and wherein in a
horizontal
direction perpendicular to a rotation axis of the second travelling wheel, a
distance
between a center of gravity of the power supply device to which the one or
more first
battery packs are mounted and a rotating shaft of the second travelling wheel
is less than
or equal to 300 mm.
[0018] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the power supply device includes: a first battery compaitment set including
one or more
first battery compaitments, wherein the one or more first battery compaitments
are
disposed on the rear side of the seat, the one or more first battery compai
intent are used
for detachably mounting the one or more first battery packs, and the one or
more first
battery packs are further configured to power another power tool; wherein a
number of
the one or more first battery compaitments are one or more, and the power
supply device
is disposed on the rear side of the seat; and wherein in a direction
perpendicular to the
first straight line and perpendicular to the second axis, a distance between a
center of
gravity of a whole of the power supply device to which the one or more first
battery
packs are mounted and the second axis is less than or equal to 300 mm.
[0019] In one example, an electric riding lawn mower including: a seat for
a user to ride;
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a main frame to support the seat; a power output assembly including a mowing
element
for outputting power to realize a mowing function and a first motor for
driving the
mowing element to output power; a walking assembly configured to at least
drive the
electric riding lawn mower to travel in a first straight line on the ground
and including a
second motor to drive the walking assembly; and a power supply device
including at least
one first battery compai ______________________________________________ intent
to couple to a battery pack; wherein the at least one first
battery compai __ intent is mounted to the main frame, the at least one first
battery
compai __ intent is used for pluggable coupling to the battery pack, the at
least one first
battery compai __ intent is further provided with input terminals to bring in
electrical energy
to the electric riding lawn mower.
[0020] In one example, a number of the at least one first battery compai
intent is greater
than or equal to 4 and less than or equal to 10.
[0021] In one example, the walking assembly included: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein a number of the at least one first battery compai
intent is one or
more; and wherein in a direction of the first straight line, a distance
between the center of
a whole constituted by all of the at least one the first battery compaitment
disposed on the
rear side of the seat along the direction of the first straight line and a
rotating shaft of the
second travelling wheel is less than or equal to 300 mm.
[0022] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel has a first diameter, and the second travelling
wheel has a
second diameter greater than the first diameter; wherein a number of the at
least one first
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battery compai __ intent is one or more; wherein in a direction perpendicular
to the first
straight line and perpendicular to the second axis, a distance between a
center of a whole
constituted by all of the at least one first battery compm _______________
intent disposed on the rear side of
the seat and the second axis is less than or equal to 300 mm.
[0023] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel has a first diameter, and the second travelling
wheel has a
second diameter greater than the first diameter; wherein a number of the at
least one of
first battery compai _____________________________________________________
intent is one or more; and wherein in a direction parallel to the second
axis, a distance between the center of a center of a whole constituted by all
of the at least
one first battery compai intent disposed on the rear side of the seat and a
center of two
second travelling wheels is less than or equal to 300 mm.
[0024] In one example, an electric riding machine including: a seat for a
user to ride; a
main frame to support the seat; a power output assembly including a mowing
element for
outputting power to realize a mowing function and a first motor for driving
the mowing
element to output power; a walking assembly configured to at least drive the
electric
riding lawn mower to travel in a first straight line on the ground and
including a second
motor to drive the walking assembly; and a power supply device including at
least one
first battery pack to power the electric riding machine; wherein the power
supply device
is mounted to the main frame, at least one of the at least one first battery
pack of the
power supply device form a detachable connection with the main frame, and the
at least
one first battery pack detachably connected with the main frame is also
configured to
power another power tool.
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[0025] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis.
[0026] In one example, the first travelling wheel has a first diameter, and
the second
travelling wheel has a second diameter greater than the first diameter.
[0027] In one example, the first travelling wheel is a universal wheel.
[0028] In one example, the main frame extends in a direction of the first
straight line.
[0029] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel has a first diameter, and the second travelling
wheel has a
second diameter larger than the first diameter; and wherein in a direction of
the first
straight line, a distance between a center of gravity of the electric riding
machine and the
second axis is greater than or equal to 0 and less than or equal to 400 mm.
[0030] In one example, a center of gravity of the electric riding machine
is located on the
lower side of the seat.
[0031] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel has a first diameter, and the second travelling
wheel has a
second diameter larger than the first diameter; and wherein in a direction of
the first
straight line, a ratio of a distance between the center of gravity of the
electric riding
machine and the first axis to a distance between the center of gravity of the
electric riding
machine and the second axis is greater than or equal to 2 and less than or
equal to 4.
[0032] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
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the first travelling wheel has a first diameter, and the second travelling
wheel has a
second diameter larger than the first diameter; and wherein in a direction
perpendicular to
the first straight line and perpendicular to the second axis, a distance
between a center of
gravity of the electric riding machine and the second axis is greater than or
equal to 0 and
less than or equal to 150 mm.
[0033] In one example, the walking assembly includes: a first travelling
wheel having a
first diameter; and a second travelling wheel having a second diameter greater
than the
first diameter; wherein the power supply device includes: at least one first
battery
compai __ intent disposed on the rear side of the seat away from the first
travelling wheel;
wherein the at least one first battery pack of the power supply device is
mounted to the at
least one first battery compai intent, and a number of the at least one
first battery
compai __ intent is one or two or more; wherein in a direction of the first
straight line, a
distance between a center of a whole constituted by all of the at least one
first battery
compai __ intent disposed on the rear side of the seat along the direction of
the first straight
line and the second axis is less than or equal to 300 mm.
[0034] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein
the first travelling wheel has a first diameter, and the second travelling
wheel has a
second diameter greater than the first diameter; wherein the power supply
device
includes: at least one first battery compai intent disposed on the rear
side of the seat away
from the first travelling wheel; wherein the at least one first battery pack
of the power
supply device is mounted to the at least one first battery compai ______
intent, and a number of
the at least one first battery compai intent is one or more; and wherein in
a direction
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perpendicular to the first straight line and perpendicular to the second axis,
a distance
between a center of a whole constituted by all of the at least one first
battery
compai __ intent disposed on the rear side of the seat and the second axis is
less than or equal
to 300 mm.
[0035] In one example, the walking assembly includes: a first travelling
wheel rotatable
about a first axis; and a second travelling wheel rotatable about a second
axis; wherein a
number of the second travelling wheels is two, the two second travelling
wheels are
symmetrically disposed on both sides of a symmetrical plane, and the user
faces a
forward direction of the electric riding machine when the user sits on the
seat; wherein
the power supply device includes: at least one first battery compai ____
intent disposed on the
rear side of the seat; and wherein a number of the at least one first battery
compaitment is
one or more, and a whole of all of the at least one first battery compai __
intent disposed on
the rear side of the seat is symmetrically disposed about the symmetrical
plane.
[0036] In one example, the user faces the forward direction of the electric
riding machine
when the user sits on the seat; wherein the power supply device includes: at
least one first
battery compai __ intent disposed on the rear side of the seat; the at least
one first battery
compai __ intent is formed with a first groove, and the at least one first
battery pack is
detachably inserted into the first groove in the direction of a second
straight line.
[0037] In one example, the direction of the second straight line in which
the at least one
first battery pack is inserted into the first groove intersects the direction
of the first
straight line obliquely.
[0038] In one example, the angle between the direction of the second
straight line in
which the at least one first battery pack is inserted into the first groove
and the direction
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of the first straight line is greater than 60 degrees and less than 90
degrees.
[0039] In one example, the direction of the second straight line in which
the at least one
first battery pack is inserted into the first groove is perpendicular to the
direction of the
first straight line.
[0040] In one example, the direction of the second straight line in which
the first battery
pack is inserted into the first groove is parallel to the direction of the
first straight line.
[0041] In one example, the at least one first battery compat intent is
also formed with a
locking structure for locking the at least one first battery pack on the at
least one first
battery compai __ intent.
[0042] In one example, a vibration damping device is further disposed
between the
power supply device and the main frame.
[0043] In one example, the at least one first battery pack includes a
plurality of battery
cells, an extending direction of the battery cells is parallel to the
direction of a second
straight line in which the first battery pack is inserted into the first
groove.
[0044] In one example, when the at least one first battery pack is inserted
into the first
groove, the dimension in the direction of the first straight line of a cross
section of the
first battery pack in a plane perpendicular to the direction of the second
straight line is
smaller than the dimension of the cross section in the direction perpendicular
to the first
straight line and parallel to the plane.
[0045] In one example, at least one of the first battery pack of the power
supply device is
fixedly mounted to the main frame.
[0046] In one example, the user faces the forward direction of the electric
riding machine
when the user sits on the seat, and the at least one first battery pack is
disposed on the
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rear side of the seat; wherein the power supply device further includes: a
second battery
pack disposed on the lower side of the seat.
[0047] In one example, the electric riding machine is a lawn mower, and the
output
member is a mowing element.
[0048] In one example, an electric riding lawn mower including: a seat for
a user to ride;
a main frame to support the seat; a power output assembly including a mowing
element
for outputting power to realize a mowing function and a first motor for
driving the
mowing element to output power; a walking assembly including a front
travelling wheel
and a rear travelling wheel configured to at least drive the electric riding
lawn mower
walking on the ground, and a second motor to drive the rear travelling wheel,
wherein the
rear travelling wheel has a rotating shaft; and a power supply device
including a first
battery compai __ intent set, the first battery compai _______________ intent
set including one or more first
battery compai __ intents, at least a portion of the one or more first battery
compai intents
being disposed on the rear side of the seat, wherein the one or more first
battery
compai __ intents are for detachably mounting a first battery pack, and the
first battery pack
is further configured to power another power tool; wherein a horizontal
distance between
a center of all of the one or more first battery compai ________________
intents disposed on the rear side of
the seat and a rotating shaft of the rear travelling wheel is less than or
equal to 300 mm.
[0049] In one example, a vertical distance between a center of all of the
one or more first
battery compai __ intents disposed on the rear side of the seat and the
rotating shaft of the
rear travelling wheel is less than 300 mm.
[0050] In one example, the one or more first battery compai _________
intents disposed on the rear
side of the seat is disposed on the rear side of the rear travelling wheel.
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[0051] In one example, at least one of the one or more first battery
compaittnents is
disposed on the front side of the rear travelling wheel and under the seat.
[0052] In one example, all of the one or more first battery compaittnents
are located on
the rear side of the seat and on the rear side of the rotating shaft of the
rear travelling
wheel.
[0053] In one example, a distance between a center of all of the one or
more first battery
compai __ intents disposed on the rear side of the seat and a center of a
rotating shaft of the
rear travelling wheel is less than 100 mm in a left-right direction of the
electric riding
lawn mower.
[0054] In one example, an electric riding lawn mower including: a seat for
a user to ride;
a main frame to support the seat; a power output assembly including a mowing
element
for outputting power to realize a mowing function and a first motor for
driving the
mowing element to output power; a walking assembly including a front
travelling wheel
and a rear travelling wheel configured to at least drive the electric riding
lawn mower
walking on the ground, and a second motor for driving the rear travelling
wheel, wherein
the rear travelling wheel has a rotating shaft; and a power supply device
including one or
more first battery compai intents, at least a part of the one or more first
battery
compai __ intents being disposed on the rear side of the seat, wherein the one
or more first
battery compai __ intents are for detachably mounting a first battery pack,
and the first
battery pack is also configured to power another power tool; wherein a
horizontal
distance between a center of gravity of the electric riding lawn mower to
which the first
battery pack is mounted and the rotating shaft of the rear travelling wheel is
less than or
equal to 500 mm.
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[0055] In one example, a vertical distance between a center of gravity of
the electric
riding lawn mower to which the first battery pack is mounted and a center of
the rotating
shaft of the rear travelling wheel is less than 300 mm.
[0056] In one example, the one or more first battery compai intents
disposed on the rear
side of the seat are disposed on the rear side of the rear travelling wheel.
[0057] In one example, at least one of the one or more first battery
compaitments are
disposed on the front side of the rear travelling wheel and under the seat.
[0058] In one example, all of the one or more first battery compaitments
are located on
the rear side of the seat and on the rear side of the rear travelling wheel
shaft.
[0059] In one example, a distance between a center of gravity of the
electric riding lawn
mower to which the first battery pack is mounted and a center of the rotating
shaft of the
rear travelling wheel are less than 100 mm in the lateral direction of the
electric riding
lawn mower.
[0060] In one example, an electric riding lawn mower including: a seat for
a user to ride;
a main frame to support the seat; a power output assembly including a mowing
element
for outputting power to realize a mowing function and a first motor for
driving the
mowing element to output power; a walking assembly including a front
travelling wheel
and a rear travelling wheel configured to at least drive the electric riding
lawn mower
walking on the ground, and a second motor to drive the rear travelling wheel,
wherein the
rear travelling wheel has a rotating shaft; and a power supply device
including one or
more first battery compai intents, at least a part of the one or more first
battery
compai __ intents being disposed on the rear side of the seat, wherein the one
or more first
battery compai __ intents are used for detachably mounting a first battery
pack, and the first
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battery pack is also configured to power another power tool; wherein when the
first
battery pack is mounted to the one or more first battery compat _________
intents, a upper portion of
the first battery pack is substantially equal to or shorter than the seat in a
height direction.
[0061] In one example, an electric riding lawn mower including: a seat for
a user to ride;
a main frame to support the seat; a power output assembly including a mowing
element
for outputting power to realize a mowing function and a first motor for
driving the
mowing element to output power; a walking assembly including a front
travelling wheel
and a rear travelling wheel configured to at least drive the electric riding
lawn mower
walking on the ground, and a second motor for driving the rear travelling
wheel, wherein
the rear travelling wheel has a rotating shaft; and a power supply device for
providing
power; wherein the power supply device is disposed on the rear side of the
seat, and a
upper side of the power supply device is substantially equal to or shorter
than the seat in a
height direction.
[0062] The present disclosure is advantageous in that the electric riding
lawn mower of
the present disclosure has high adaptability and low usage cost.
BRIEF DESCRIPTION OF DRAWINGS
[0063] FIG. 1 is a perspective view of an electric riding lawn mower of a
first example of
the present disclosure when a grass collecting device is installed;
[0064] FIG. 2 is a perspective view of the electric riding lawn mower of
FIG. 1 from
another angle;
[0065] FIG. 3 is a plan view of a user riding the electric riding lawn
mower of FIG. 1;
[0066] FIG. 4 is a top view of the electric riding lawn mower of FIG. 1;
[0067] FIG. 5 is a schematic view of a power output assembly of FIG. 1;
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[0068] FIG. 6 is a plan view of a user climbing uphill on an electric
riding lawn mower;
[0069] FIG. 7 is a schematic view showing a second travelling wheel and the
centre of
gravity of the entirety formed by a user and an electric riding lawn mower;
[0070] FIG. 8 is a schematic structural view of a power tool system;
[0071] FIG. 9 is a schematic structural view of a first battery pack of
FIG. 1;
[0072] FIG. 10 is a perspective view of the electric riding lawn mower of
FIG. 1 when a
cover is opened;
[0073] FIG. 11 is a perspective view of the electric riding lawn mower of
FIG. 1 when a
first battery pack is removed;
[0074] FIG. 12 is a top view of the structure shown in FIG. 11;
[0075] FIG. 13 is a plan view of an electric riding lawn mower of a second
example of
the present disclosure;
[0076] FIG. 14 is a plan view of an electric riding lawn mower of a third
example of the
present disclosure;
[0077] FIG. 15 is a top view of an electric riding lawn mower of a fourth
example of the
present disclosure.
DETAILED DESCRIPTION
[0078] The electric riding machine shown in FIG. 1 can be an electric
machine for
working indoors or outdoors. In the present example, the electric riding
machine is
specifically exemplified by the electric riding lawn mower 100. The electric
riding lawn
mower 100 can be used for the user to ride. When sitting on the electric
riding lawn
mower, the user can effectively and quickly trim lawn, vegetation, etc. by
operating the
electric riding lawn mower. Comparing with walk behind lawn mowers, the
electric
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riding lawn mower 100 of the present disclosure does not require the user to
push the
machine, nor does it require the user to walk on the ground, and because its
large size
brings longer endurance, the user is able to trim larger lawns, and trim for a
long time
with less tiredness. Furthermore, when it comes to power source, the electric
riding lawn
mower 100 uses electrical energy rather than gasoline or diesel used by
existing riding
lawn mowers; this not only costs less and is more environmental friendly, but
also
requires part replacement less often, reducing maintenance costs.
[0079] It can be understood that the electric riding machine may be other
types of electric
machines, as long as the electric machines can output power in other forms in
addition to
walking power to fulfil other functions besides walking, the electric machines
can be
considered as riding electric machines, such as riding snow throwers, riding
agricultural
machines, riding mops, riding sweepers and the like. In fact, as long as these
tools
include the substance described below in this disclosure, they all fall within
the scope of
this disclosure.
[0080] In order to facilitate the description of the technical solution of
the present
disclosure, the front side, the rear side, the upper side, the lower side, the
left side, and
the right side are defined as shown in FIG. 1.
[0081] As shown in FIGS. 1-12, the electric riding lawn mower 100 includes
a main
frame 11, a seat 12, a power output assembly 13, a walking assembly 14, an
operating
assembly 15, and a power supply device 16.
[0082] The main frame 11 is used to carry various modules of the electric
riding lawn
mower 100. Specifically, the main frame is used to support the seat 12, the
power output
assembly 13, the walking assembly 14, the operating assembly 15, and the power
supply
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device 16, and the like. The main frame 11 extends generally in the front-rear
direction.
Specifically, the main frame 11 extends at least partially in a direction
parallel to a first
straight line 101 in the front-rear direction. The main frame 11 includes a
frame lla and a
base 11b. The frame 11 a includes a first arm 111, a second arm 112, and a
connecting arm
113 that connects the first arm 111 and the second arm 112. The connecting arm
113
connects the first arm 111 and the second arm 112 such that the first arm 111,
the second
arm 112, and the connecting arm 113 constitute a frame lla that supports the
base 11b.
The first arm 111 and the second arm 112 may be in the front-rear direction.
In the
present example, the connecting arm 113 extends in the left-right direction;
the number of
the connecting arms 113 is two. One of the connecting arms 113 connects the
first arm
111 and the second arm 112 at the front ends thereof, and the other connecting
arm 113
connects the first arm 111 and the second arm 112 at the rear ends thereof,
such that the
first arm 111, the second arm 112 and the two connecting arms 113 form a
substantially
rectangular frame 11 a. It is to be understood that the structure of the first
arm 111, the
second arm 112 and the two connecting arms 113 is not limited thereto, and the
structure
of the frame lla is not limited thereto. The frame lla surrounds the base 11b,
and the
shape of the base llb is adapted to the shape of the frame 11 a. In the front-
rear direction,
the base llb is provided at the front of the frame 11a, the base llb fills the
front portion
of the rectangular formed by the surrounding frame 11a, and the base llb is at
least
partially extended in a plane extending in the front-rear direction, and the
base llb serves
as a work platform to support the user's feet and some mechanisms that can be
operated
with the user's feet. The seat 12 is for a user to ride, and the seat 12 is
mounted to the
main frame 11. The seat 12 is slidable with respect to the main frame 11 in
the direction
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of the first straight line 101, so that the seat 12 can be moved forward or
backward, so
that the user can adjust the position of the seat 12 in the front-rear
direction according to
the user's height and usage habits, aiding comfort of the electric riding lawn
mower 100.
The seat 12 specifically includes a bottom portion 121 and a backrest 122. The
bottom
portion 121 extends substantially in the front-rear direction, and the
backrest portion 122
extends upward from the bottom portion 121. As shown in FIGS. 1 and 3, when
the user
sits on the seat 12, the user faces the forward direction of the electric
riding lawn mower
100, i.e., the user faces the front side. The frame 11 a can support the seat
12, it should be
understood that the frame lla may directly support the seat 12, and the frame
lla may
also indirectly support the seat 12 by connecting to other structures. The
seat 12 is
provided on the upper side of the frame 11 a. In the front-rear direction, at
least half of the
seat 12 is disposed on the rear side of the base 11b, so that when the user
sits on the seat
12, the user's feet can be placed on the base lib on the front side of the
seat 12. In this
way, on the one hand, the weight of the whole machine can be reduced, and the
cost can
be saved; on the other hand, the lower side of the seat 12 can free more space
to set the
other two parts, thereby saving space.
[0083] The
power output assembly 13 includes an output member for outputting power to
achieve a mechanical function. For example, in the present example, the output
member
may specifically be a mowing member 131. The power outputted by the power
output
assembly 13 is the power other than enabling the electric riding lawn mower
100 to walk
on the ground, and different output members enable the power output assembly
13 to
perform different functions, for example, the output member may blow the snow,
the
output member may sweep the ground, the output member may also plow the field,
etc.
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[0084] In the present example, the output member is the mowing element 131,
which can
realize the function of trimming the lawn, cutting the weeds, and the like.
Specifically,
the power output assembly 13 is also connected to the main frame 11, and in
the present
example, the power output assembly 13 can be specifically mounted to the lower
side of
the main frame 11. It should be understood that the main frame 11 may be
directly
connected to the power output assembly 13, and may also be indirectly
connected
through other connection structures to the power output assembly.
[0085] The power output assembly 13 is disposed substantially on the lower
side of the
main frame 11, which effectively utilizes the space on the lower side of the
main frame
11, and reduces the size of the entire electric riding lawn mower 100 in the
front-rear
direction such that the whole structure is more compact. Furthermore, it also
reduces the
center of gravity G1 of the electric riding lawn mower 100, improves the
stability of the
electric riding lawn mower 100, and avoids the problem of machine rollover and
backward turning during climbing.
[0086] The power output assembly 13 further includes: a first motor 132 and
a chassis
133. The mowing element 131 is used to implement the mowing function; the
first motor
132 is used to drive the mowing element 131 to rotate at a high speed; the
chassis 133 is
formed with an accommodation space to accommodate at least a portion of the
first motor
132 and at least a portion of the mowing element 131. The power output
assembly 13
may include one or more mowing element 131, and respectively, the number of
the first
motors 132 can correspond to the mowing element 131. For example, in the
present
example, the number of mowing elements 131 is two, which increases the cutting
range
of the electric riding lawn mower 100, thereby improving the cutting
efficiency.
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[0087] The walking assembly 14 is used to enable the electric riding lawn
mower 100 to
walk on the lawn and on the ground. In the up-down direction, the walking
assembly 14
is also capable of supporting the main frame 11 and the various components on
the main
frame 11. The walking assembly 14 may specifically include a first travelling
wheel 141
and a second travelling wheel 142. The first travelling wheel 141 is disposed
on the front
side of the second travelling wheel 142 in the front-rear direction.
Therefore, the first
travelling wheel 141 may also be defined as the front travelling wheel, and
the second
travelling wheel 142 may also be defined as the rear travelling wheel. In the
present
example, the number of the first travelling wheels 141 is 2, and the number of
the second
travelling wheels 142 is also 2, which can improve the stability of the
electric riding lawn
mower 100 in the left-right direction and avoid rollovers on the ground or up
the hill. In
fact, the walking assembly 14 may also include only one first travelling wheel
141 and
two second travelling wheels 142; alternatively, the walking assembly 14 may
include
two first travelling wheels 141 and one second travelling wheel 142; wherein
in the
direction along the first straight line 101, the power output assembly 13 is
at least
partially disposed between the first travelling wheel 141 and the second
travelling wheel
142.
[0088] Further, the power output assembly 13 is disposed substantially
between the first
travelling wheel 141 and the second travelling wheel 142; in the direction
along the first
straight line 101, the seat 12 is also at least partially disposed between the
first travelling
wheel 141 and the second travelling wheel 142, so that the center of gravity
G1 of the
electric riding lawn mower 100 is located between the first travelling wheel
141 and the
second travelling wheel 142 in the direction of the first straight line 101,
thereby
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improving the balance performance of the whole machine. Further, in the
direction along
the first straight line 101, the seat 12 is closer to the second travelling
wheel 142 and
further from the first travelling wheel 141, so that the electric riding lawn
mower 100 can
be effectively prevented from rollover during climbing. In the left-right
direction, the two
first travelling wheels 141 are respectively located at two sides of the main
frame 11, and
the two second travelling wheels 142 are also respectively located at two
sides of the
main frame 11; that is, the projections of the two first walking wheels 141 in
a plane
perpendicular to the up-down direction are outside the projection of the main
frame 11 in
the plane, and the projections of the two second walking wheels 142 in the
plane are also
located outside the projection of the main frame 11 in the plane. In this way,
the main
load-bearing portion of the electric riding lawn mower 100 can be placed
between the
two first travelling wheels 141 and also between the two second travelling
wheels 142, so
that the electric riding lawn mower 100 can be further effectively prevented
from rolling
over.
[0089] The first travelling wheel 141 may specifically be a universal wheel
that can
rotate about the first axis 102. The first travelling wheel 141 has a first
diameter. It can be
understood that since the first travelling wheel 141 is a universal wheel, the
electric
riding lawn mower 100 can turn, and when the electric riding lawn mower 100
turns, the
first axis 102 of first travelling wheel 141 also rotates, and the orientation
of the first
travelling wheel 141 rotates. The walking assembly 14 also includes a second
motor 143
for driving the second travelling wheel 142 to rotate about the second axis
103. The drive
from the second motor 143 allows the walking assembly to drive the entire
electric riding
lawn mower 100 to walk on the ground. In this example, the second motor 143 is
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independent of the first motor 132 that drives the mowing element 131, so that
the
structure of the whole machine is simpler and the driving is more convenient.
The
number of the second motors 143 is also two, and the two second motors 143 are
capable
of driving the two second travelling wheels 142 respectively. Thus, when the
two second
motors 143 drive the respective second travelling wheels 142 at different
rotational
speeds, a speed difference is generated between the two second travelling
wheels 142,
thereby causing the electric riding lawn mower 100 to turn. The second
travelling wheel
142 has a second diameter, and the second diameter of the second travelling
wheel 142 is
greater than the first diameter of the first travelling wheel 141. Wherein,
the second
diameter of the second travelling wheel 142, the ratio of the second diameter
of the
second travelling wheel 142 to the first diameter of the first travelling
wheel 141 is
greater than or equal to 1.4 and less than or equal to 2, such that the second
diameter of
the second travelling wheel 142 is larger than the first diameter of the first
travelling
wheel 141, so that the electric riding lawn mower 100 is less likely to roll
backward when
climbing uphill. Of course, the second diameter of the second travelling wheel
142
cannot be excessively larger than the first diameter of the first travelling
wheel 141 to
avoid the risk of the electric riding lawn mower 100 rolling forward on the
downhill
slope.
[0090] In
the present example, the distance between the second travelling wheel 142 and
the center of the two second travelling wheels 142 is defined as cl, i.e.,
half of the
distance between the two second travelling wheels 142 is considered to be cl.
In the
present example, with a large number of modelling, test analyses, theoretical
analysis,
and creative work on the electric riding lawn mower 100, it is concluded that
in order to
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avoid rollover when the electric riding lawn mower 100 climbs the uphill, the
ratio of the
distance cl between the second travelling wheel 142 and the center of the two
second
travelling wheels 142 to the second diameter of the second travelling wheel
142 is greater
than or equal to 0.5 and less than or equal to 1, such that the distance cl
between the
second travelling wheel 142 and the center of the two second travelling wheels
142 is not
excessively large, and the turning radius of the entire electric riding lawn
mower 100 can
be reduced, thereby making the electric riding lawn mower 100 turns faster.
[0091] Further, the distance between the center of gravity G1 of the
electric riding lawn
mower 100 and the two second travelling wheels 142 in the up-down direction is
defined
as hl, The ratio of the distance hl to the second diameter of the second
travelling wheel
142 is greater than or equal to 0.5 and less than or equal to 0.5 and less
than or equal to 1,
such that when the second diameter of the second travelling wheel 142 is
fixed, the center
of gravity G1 of the electric riding lawn mower 100 can be placed in a
reasonable
position in the up-down direction. Therefore, the risk of rollover of the
electric riding
lawn mower 100 during climbing is reduced. The position of the center of
gravity G1 of
the electric riding lawn mower 100 can be reasonably improved as the second
diameter of
the second travelling wheel 142 is increased. In the present example, the
ratio of the
distance hl between the center of gravity G1 of the electric riding lawn mower
100 and
the center of the two second travelling wheels 142 in the up-down direction to
the
distance cl between the second travelling wheel 142 and the center of the two
second
travelling wheels 142 is greater than or equal to kl and less than or equal to
k2, that is, kl
= hl/cl = k2, and the setting of kl and k2 is related to the dimension of
the second
diameter of the second travelling wheel 142. Thus, when the second diameter of
the
Date Recue/Date Received 2020-06-29
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second travelling wheel 142 is set, kl and k2 can also be set to a reasonable
value. Thus,
when the distance cl between the second travelling wheel 142 and the center of
the two
second travelling wheels 142 is set small, the rollover issue during climbing
can be
alleviated by lowering the center of gravity G1 of the electric riding lawn
mower 100.
[0092] When the center of gravity G1 of the electric riding lawn mower 100
is set high,
the distance cl between the second travelling wheel 142 and the center of the
two second
travelling wheels 142 can be increased to prevent the electric riding lawn
mower 100
from rollover during climbing. For example, in the present example, kl has a
value of 0.6
and k2 has a value of 1.1, such that 0.6 = hl/c1 = 1.1. More specifically, in
a direction
perpendicular to the first straight line 101 and perpendicular to the second
axis 103, the
distance Li between the center of gravity G1 of the electric riding lawn mower
100 and
the second axis 103 is greater than or equal to 0 and less than or equal to
150 mm, that is,
the distance Li is greater than or equal to 0 and less than or equal to 150 mm
in the up-
down direction, so that the center of gravity G1 of the electric riding lawn
mower 100 is
not too high in the up-down direction. When the user sits on the seat 12, the
center of
gravity will rise to some extent, but since the center of gravity G1 of the
electric riding
lawn mower 100 is set low, the center of gravity G2 of the entirety formed by
the user
and the electric riding lawn mower 100 is not too high in the up-down
direction, which
improves stability. It should be noted that, in the present disclosure, the
distance between
two points, lines and planes in a certain direction refers to the projection
distance of the
spatial distance between them in the specified direction.
[0093] The operating assembly 15 is for user operation to control the
electric riding lawn
mower 100 to walk and output power. The operating assembly 15 can include a
first
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operating element and a second operating element 152. The first operating
element is for
user to operate to activate the first motor 132 in the power output assembly
13 to control
the mowing element 131 to mow. The second operating element 152 is for user to
operate
to activate the second motor 143 in the walking assembly 14 to control the
electric riding
lawn mower 100 to walk on the lawn or on the ground. The number of second
operating
elements 152 is two. In the present example, two of the second operating
elements 152
are used to respectively control two of the second motors 143. The two second
operating
members 152 are respectively disposed on both sides of the seat 12 such that
the two
second operating members 152 on both sides can be more conveniently operated
when
the user sits on the seat 12.
[0094] The
power supply device 16 is for supplying power to the first motor 132 and the
second motor 143. The power supply device 16 includes a plurality of first
battery packs
161. Compared with the conventional riding lawn mowers powered by gasoline,
the
electric riding lawn mower 100 powered by the first battery pack 161 is more
environmental friendly and the later usage cost is also lower. In the long
run, the cost of
the electric riding lawn mower using the first battery pack 161 will be lower.
Compared
with riding lawn mowers powered by alternating current, the first battery pack
161
supplies power without using a long power cord, which is safer and more
convenient for
mowing. In the present disclosure, the first battery pack 161 is a lithium
battery pack, and
the first battery pack 161 is lighter in weight, higher in charge and
discharge efficiency,
and longer in service life than other types of battery packs (for example,
lead-acid
batteries). Further, in the present example, the voltage of the first battery
pack 161 is 56V.
Of course, it can be understood that the voltage value of the first battery
pack 161 is not
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limited thereto.
[0095] The power supply device 16 is disposed on the rear side of the seat
12, and in the
height direction, the upper end of the power supply device 16 is shorter than
the seat 12,
or the upper end of the power supply device 16 is substantially of the same
height to the
seat 12; further, in the height direction, the upper end of the first battery
pack 161 is
shorter than the seat 12, or the first battery pack 161 is substantially of
the same height to
the seat 12.
[0096] In the present example, the first battery pack 161 can be detached
from the main
frame 11 by the user, that is, the first battery pack 161 for powering the
electric riding
lawn mower 100 is detachably mounted to the main frame 11, so that when the
power of
the first battery pack 161 is insufficient, the user can detach the first
battery pack 161 for
charging, instead of directly charging the electric riding lawn mower 100,
thereby
improving operational convenience; in addition, when the first battery pack
161 is
damaged, the user can conveniently disassemble the first battery pack 161 for
maintenance or directly replace the first battery pack 161, which avoids
fixing or
replacing the riding lawn mower whose battery pack cannot be disassembled, and
thus
reduces the cost of maintenance at a later stage. Moreover, the ability to
disassemble the
first battery pack 161 also allows for differentiated design of products for
different
platforms or regions, making quality control and manufacture of the entire
electric riding
lawn mower 100 easier. Still alternatively, the power tool system 1 shown in
FIG. 8
includes the electric riding lawn mower 100 and a power tool 100a in the
present
disclosure. Wherein, the first battery pack 161 in the power supply device 16
for
supplying power to the electric riding lawn mower 100 can be detached and
mounted into
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the electric power tool 100a, so that the first battery pack 161 can also
power the electric
power tool 100a, that is, the first battery pack 161 in the power supply
device 16 in the
present disclosure can be applied not only to the electric riding lawn mower
100 but also
to other electric power tools 100a, thereby improving the adaptability of the
first battery
pack 161 and the ability of the electric riding lawn mower 100 to adapt to the
first battery
pack 161. Thus, when the electric riding lawn mower 100 is not in use, the
user can
disassemble the first battery pack 161 for use in other electric power tools
100a, thereby
avoiding waste of resources and reducing usage cost. In other words, when the
user needs
to use the electric riding lawn mower 100, the user can borrow the battery
pack in other
power tool 100a as the first battery pack 161. In the present example, the
first battery
pack 161 is configured to be pluggably mounted by the user to the electric
riding lawn
mower 100, and the first battery pack 161 is attached and detached by plugging
and
unplugging, making the operation more convenient, and the positioning of the
first
battery pack 161 more accurate.
[0097] Further, as shown in FIG. 9, the first battery pack 161 includes a
plurality of
battery cells 161a connected in series, in parallel, or in a combination of
series and
parallel. The plurality of battery cells 161a are combined in one battery case
to constitute
a whole, and the battery cells 161a may specifically be lithium-based.
Specifically, the
power tool 100a may be a garden tool such as a string trimmer, a hedge
trimmer, a blower
or a chain saw, a torque output tool such as an electric drill or an electric
hammer, a
sawing tool such as an electric circular saw, a curve saw or a reciprocating
saw, or a
grinding tool such as an angle grinder or a sander. Of course, in other
examples, the first
battery pack 161 can also be configured to power a hand-push power tool, such
as a
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hand-push lawn mower, a hand-push snow blower, and the like. Thus, the first
battery
pack 161 of the present disclosure adapted to the electric riding lawn mower
100 can be
pulled out by the user to be applied to the above power tool 100a, in other
words, the user
can borrow the battery packs in the power tool 100a as the first battery pack
161 to power
the electric riding lawn mower 100, thereby improving the versatility of the
electric
riding lawn mower 100 and reducing the usage cost.
[0098] In
the present example, the area surrounded by the frame lla may be divided into
a front portion, a middle portion, and a rear portion in the front-rear
direction. The base
llb only fills the front portion of the frame 11a, and the middle portion and
the rear
portion of the frame 11 a are not provided with the base 11b, and the seat 12
is provided
on the upper side of the middle portion of the frame 11a, so that the lower
side of the seat
12 and the middle portion of the frame lla have more space to for other
components, so
that the structure of the whole machine is more compact. The rear portion of
the frame
lla and the rear side of the seat have a sufficiently large accommodation
space which can
be used to house the power supply device 16. In the present example, the
number of the
first battery packs 161 included in the power supply device 16 is plural; the
number of the
first battery packs 161 is at least 4; the number of the first battery packs
161 is greater
than or equal to 4 and less than or equal to 10. Further, in the present
example, the
number of the first battery packs 161 is exemplified by six, so that the
electric riding
lawn mower 100 is powered by the plurality of first battery packs 161, and on
the other
hand, the endurance capability of the entire electric riding lawn mower 100 is
improved,
thereby avoiding the trouble of repeated charging, and improving the
efficiency of work;
on the other hand, the power supply device 16 includes a plurality of first
battery packs
Date Recue/Date Received 2020-06-29
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161, and thus the weight of the power supply device 16 is heavier. For the
entire electric
riding lawn mower 100, the weight of the power supply device 16 makes up a
large
proportion of the weight of the entire electric riding lawn mower 100.
Therefore,
disposing the power supply device 16 in the rear end of the frame lla and on
the rear side
of the seat 12 locates the power supply device 16 at the rear end of the
electric riding
lawn mower 100, thereby enabling the center of gravity G1 of the electric
riding lawn
mower 100 to move backward, further reducing the possibility of rolling over
backwards
when the electric riding lawn mower 100 climbs the slope, and improving the
safety
performance.
[0099]
Further, the center of gravity G1 of the electric riding lawn mower 100 is
disposed
on the lower side of the seat 12. For the entire electric riding lawn mower
100, the seat 12
is substantially in the middle position in the front-rear direction, and the
center of gravity
G1 of the electric riding lawn mower 100 is disposed on the lower side of the
seat 12;
thus, the user sitting on the seat 12 only causes the center of gravity G2 of
both the user
and the electric riding lawn mower 100 to change only in the up-down direction
with
respect to the center of gravity G1 of the electric riding lawn mower 100 when
the user is
not sitting on the seat 12. The position of the center of gravity G2 does not
change in the
front-rear direction and the left-right direction, so that the risk of
rollover caused by the
user sitting on the seat 12 can be further reduced. The center of gravity G1
of the electric
riding lawn mower 100 is disposed on the lower side of the seat 12. Therefore,
regardless
of whether a user with a relatively heavy weight or a user with a relatively
light weight
operates the electric riding lawn mower 100, the center of gravity G2 of the
entirety
constructed by the user and the electric riding lawn mower 100 will not change
in the
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left-right direction and the front-rear direction, thereby improving the
stability of the
electric riding lawn mower 100.
[0100] As described above, when the center of gravity G1 of the electric
riding lawn
mower 100 is lowered in the up-down direction, and if the user sits on the
seat 12, the
center of gravity G2 of the entirety constructed by the user and the electric
riding lawn
mower 100 will also decline relatively. Thus, when the user rides the electric
riding lawn
mower 100 of the present disclosure to climb a slope, the second travelling
wheel 142 has
a contact point P with the slope surface, and the projection distance between
the center of
gravity G2 of the entirety constructed by the user and the electric riding
lawn mower 100
and the contact point P in the horizontal direction is B. In the direction
perpendicular to
the first line 101 and perpendicular to the second axis 103, the distance
between the
center of gravity G2 of the entirety constructed by the user and the electric
riding lawn
mower 100 and the slope surface is h, that is, in the direction perpendicular
to the slope
surface, the distance between the center of gravity G2 of the entirety
constructed by the
user and the electric riding lawn mower 100 and the slope surface is h.
Wherein, the
following relationship is satisfied between the projection distance B and the
distance h:
B=A*cos= -h*sin= ,
[0101] Wherein, A is the distance between center of gravity G2 of the
entirety
constructed by the user and the electric riding lawn mower 100 and the second
axis 103
of the second travelling wheel 142; the angle = is the angle between the slope
surface and
the horizontal plane.
[0102] From the above relationship between the projection distance B and
the distance h,
the distance A between center of gravity G2 of the entirety constructed by the
user and
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the electric riding lawn mower 100 and the second axis 103 of the second
travelling
wheel 142 is fixed; and when the angle = formed between the slope surface and
the
horizontal plane is also fixed, the smaller the distance h between the center
of gravity G2
of the entirety constructed by the user and the electric riding lawn mower 100
and the
slope surface in a direction perpendicular to the first straight line 101 and
perpendicular
to the second axis 103, the larger the projection distance B between the
center of gravity
G2 of the entirety constructed by the user and the electric riding lawn mower
100 and the
contact point P in the horizontal direction, which makes the electric riding
lawn mower
100 easier to climb and less likely to roll over.
[0103] The chassis 133 and the main frame 11 also need to be separated by a
certain
distance to allow the chassis 133 to waggle up and down. Specifically, the
distance
between the chassis 133 and the main frame 11 should be greater than or equal
to 20 mm
and less than or equal to 60 mm. In another example, it is also necessary to
make the
distance between the mowing element 131 and the ground satisfy the requirement
of
mowing. Specifically, the distance between the mowing element 131 and the
ground
should be greater than or equal to 20 mm and less than or equal to 120 mm. In
another
example, in the present example, the power of the first motor 132 is greater
than or equal
to 500 W and less than or equal to 1500 W, and therefore, the size of the
space inside the
chassis 133 also needs to meet the size of the first motor 133.
[0104] In the direction along the first straight line 101, the distance L2
between the
center of gravity G1 of the electric riding lawn mower 100 and the second axis
103 is
greater than or equal to 0 and less than or equal to 400 mm, such that the
electric riding
lawn mower 100 is not likely to roll over during climbing. In the direction
along the first
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straight line 101, The ratio of the distance L3 between the center of gravity
G1 of the
electric riding lawn mower 100 and the first axis 102 to the distance L2
between the
center of gravity G1 of the electric riding lawn mower 100 and the second axis
103 is
greater than or equal to 2 and less than or equal to 4, so that the center of
gravity G of the
electric riding lawn mower 100 is set at a proper position in a direction
along the first
straight line 101. Therefore, not only can the climbing ability be taken into
account, but
also the problem of rollover when climbing uphill can be taken into account,
and the
problem of the overturning when going downhill with the electric riding lawn
mower 100
can also be avoided.
[0105] The power supply device 16 includes a battery compai intent
housing 16a that
includes a main body portion 16b and a cover 16c that is pivotally coupled to
the main
body portion 16b. The main body portion 16b may include a first battery compat
intent
162 for mounting the first battery pack 161, and the power supply device 16
may include
two or more first battery compat intents 162, and the number of the first
battery
compaitments 162 may also be a specific plural. Specifically, in this example,
the power
supply device 16 includes six first battery compattments 162, and the six
first battery
compai __ intents 162 are disposed on the rear side of the seat 12 away from
the first
travelling wheel 141, that is, in the direction of the first straight line
101, the first battery
compai __ intent 162 and the first travelling wheel 141 are respectively
disposed on both
sides of the seat 12. In this way, the weight of the electric riding lawn
mower 100 can be
shifted back, thereby increasing the positive pressure of the second
travelling wheel 142
at the rear end to the ground, thereby increasing grip of the second
travelling wheel 142
of the electric riding lawn mower 100, and making climbing uphill easier.
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[0106] Correspondingly, the power supply device 16 includes six first
battery packs 161,
and each of the first battery packs 161 can be respectively mounted to each of
the first
battery compat __ intents 162. The first battery compaament 162 may be formed
with a first
groove 162a. The first battery pack 161 can be detachably inserted into the
first groove
162a along the direction of the second straight line 104. The first battery
pack 161 can
also be pulled out of the first groove 162a along the direction of the second
straight line
104. The cover 16c has an open state and a closed state, and when the cover
16c is in the
open state, the first groove 162a is opened and the user can insert the first
battery pack
161 into the first groove 162a; when the cover 16c is in the closed state, the
first groove
162a is closed to provide a certain protection to the first battery pack 161
located in the
battery compat __ intent housing 16a. It can be understood that the first
battery compatiment
162 can also be provided with a guiding structure 162b for guiding the first
battery pack
161 to be inserted into the first groove 162a in the direction of the second
straight line
104, such that the first battery pack 161 can be positioned more accurately in
the first
groove 162a. The first battery compai intent 162 may also be provided with
a latch 162c
for locking the first battery pack 161 in the first groove 162a. The latch
162c can lock the
first battery pack 161, and allow the first battery pack 161 to be pulled out.
In this way,
the waggle of the first battery pack 161 can be avoided. The first battery
compat intent
162 may also be provided with a pop-up structure 162d for ejecting the first
battery pack
161, thereby enabling the user to pull out the first battery pack
effortlessly. The first
battery compat __ intent 162 is further provided with an input terminal 162e
to electrically
connect to the first battery pack 161, and the input terminal 162e is for
introducing the
electric energy output by the first battery pack 161 to the electric riding
lawn mower 100.
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[0107] The direction of the second straight line 104 in which the first
battery pack 161 is
inserted into the first groove 162a obliquely intersects with the direction of
the first
straight line 101. Further, between the direction of the second straight line
104 and the
direction of the first straight line 101, an angle greater than 60 degrees and
less than 90
degrees may be formed, enabling the user to easily insert and remove the first
battery
pack 161 without squatting. That is, the angle formed between the direction of
the second
straight line 104 in which the first battery pack 161 is inserted into the
first groove 162a
and the straight line extending in the up-down direction is greater than 0
degrees and less
than or equal to 30 degrees, so that the user can easily insert and remove the
first battery
pack 161 without bending largely, thereby making the operation more
effortless, and
avoiding the user twisting or bending the arm when pulling out the first
battery pack 161,
thereby facilitating the human-machine experience. It can be understood that
the six first
battery compai __________________________________________________ intents 162
can also be formed by a single larger battery compai intent, that
is, the power supply device 16 may include only one battery compai intent,
and the
plurality of first battery packs 161 are all installed in this battery compai
intent.
[0108] Alternatively, the power supply device 16 may include only one first
battery
compai __ intent 162; correspondingly, the power supply device 16 may include
only one
first battery pack 161. That is to say, the number of the first battery compai
intents 162
and the number of the first battery packs 161 are not specifically limited,
and the
correspondence relationship between the first battery compai intent 162 and
the first
battery pack 161 is not limited to the one-to-one correspondence relationship.
It can be
understood that, in other examples, the direction of the second straight line
104 in which
the first battery pack 161 is inserted into the first groove 162a may also be
perpendicular
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to the direction of the first straight line 101, and the direction of the
second straight line
104 in which the first battery pack 161 is inserted into the first groove 162a
may also be
parallel to the direction of the first straight line 101.
[0109] In the example, the power supply device 16 includes six first
battery packs 161,
and the six first battery packs 161 are disposed on the rear side of the seat
12. The six
first battery packs 161 are arranged in a regular shape on the rear side of
the seat 12. The
first battery compai intent 162 disposed on the rear side of the seat 12 is
further disposed
on the rear side of the second travelling wheel 142. The first battery pack
161 has a
height direction extending in the direction in which it is inserted into the
first groove
162a, and has a longitudinal direction and a width direction perpendicular to
the height
direction; the dimension of the first battery pack 161 in the longitudinal
direction is
greater than the dimension thereof in the width direction. In this example,
when the first
battery pack 161 is inserted into the first groove 162a, the longitudinal
direction of the
first battery pack 161 and the second axis 103 of the second travelling wheel
142 are
parallel to each other, that is, the longitudinal direction of the first
battery pack 161
extends in the left-right direction. Thus, when the user needs to install or
remove the first
battery pack 161, the user does not need to twist the wrist, which improves
the comfort of
operation.
[0110] More specifically, the six first battery packs 161 are arranged in
three rows in the
front-rear direction, and each row has two first battery packs 161 arranged in
the left-
right direction. The two first battery packs 161 disposed in the left-right
direction are
defined as one battery unit group, or form a modular power supply device, and
the length
of the first battery pack 161 in the left-right direction is greater than the
width thereof in
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the front-rear direction. Thus, two first battery packs 161 are arranged on a
straight line
parallel to the left-right direction, and three first battery packs 161 are
arranged on a
straight line parallel to the front-rear direction, and the orientation of
each first battery
pack 161 is arranged such that its length in the left-right direction is also
greater than its
length in the front-rear direction. Thus, the dimension of the six first
battery packs 161 is
not excessively long in the front-rear direction so as not to increase the
size of the entire
electric riding lawn mower 100 in the front-rear direction; and also the
dimension of the
six first battery packs 161 is not too small in the left-right direction to
effectively utilize
the space occupied by the electric riding lawn mower 100 in the left-right
direction.
Thereby, the arrangement of the power supply device 16 is more reasonable, the
space is
saved, and the modularization is facilitated. Of course, it can be understood
that when
two first battery packs 161 in the power supply device 16 are used as one
battery unit
group, the power supply device 16 may also include two battery unit groups,
and may
further include three or more battery unit groups, thereby facilitating
modularization of
the power supply device 16 and implementation of a variety of configurations.
[0111] In the present example, the capacity of a first battery pack 161 is
greater than or
equal to 130 Wh and less than or equal to 1000 Wh. Further, the capacity of a
first battery
pack 161 is greater than or equal to 130 Wh and less than or equal to 500 Wh,
so that the
discharge time of the first battery pack 161 can also meet the most basic
requirements
even when only one first battery pack 161 is included in the power supply
device 16; or,
when the plurality of first battery packs 161 included in the power supply
device 16 are
out of power and the electric riding lawn mower 100 needs to perform mowing,
one first
battery pack 161 or two first battery packs 161 may be charged first, and
after the
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charging is completed, the one first battery pack or the two first battery
packs 161 are
inserted to the first battery compaiiment 162 to supply power. Therefore,
because the
capacity of the first battery pack 161 is greater than or equal to 130 Wh, the
discharge
time of the first battery pack 161 can meet the urgent needs of the user to
cut a part of the
grass, in other words, does not delay the use. It can be understood that, in
the present
disclosure, when any of the first battery packs 161 is installed in the
battery compai intent
housing 16a, the electric riding lawn mower 100 can be operated, that is, in
the present
disclosure, the electric riding lawn mower 100 is not limited to operate only
if all of the
first battery compai intents 162 are installed with the first battery packs
161 capable of
supplying power. Alternatively, when the plurality of first battery packs 161
are mounted
to the battery compai intent housing 16a, and some of the first battery
packs 161 are
depleted, the electric riding lawn mower 100 can still operate, thereby
improving work
efficiency. Further, in the present example, the weight of one first battery
pack 161 is
greater than or equal to 0.1 kg and less than or equal to 4 kg, which eases
carrying
difficulties due to the excessive weight of the first battery pack 161.
Further, for
considerations to allow the electric riding lawn mower 100 of the present
disclosure to
borrow battery packs in other electric power tools, it is also necessary to
make the weight
of the first battery pack 161 equal to or greater than 0.1 kg and equal to or
less than 4 kg.
More preferably, the weight of the first battery pack 161 is greater than or
equal to 1 kg
and less than or equal to 4 kg, so that the first battery pack 161 can satisfy
the capacity
and discharge time demands when the weight of the first battery pack 161 is
not
excessively heavy.
[0112] On the other hand, the ratio of the discharge power of a single
first battery pack
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161 to the nominal voltage of the first battery pack 161 is greater than or
equal to 10 WN
and less than or equal to 25 W/V, and further, the ratio of the discharge
power of a single
first battery pack 161 to the nominal voltage of the first battery pack 161 is
greater than
or equal to 12W/V and less than or equal to 20W/V. Specifically, the discharge
power of
the first battery pack 161 is greater than or equal to 500 W and less than or
equal to 6500
W. Further, the discharge power of the first battery pack 161 is greater than
or equal to
500 W and less than or equal to 3000 W, which enables the first battery pack
161 to adapt
to the high power needs of the electric riding lawn mower 100 of the present
disclosure.
In this example, the power supply device 16 includes a plurality of first
battery packs
161, and the plurality of first battery packs 161 provide an overall discharge
power of
greater than or equal to 2000 W and less than or equal to 4000 W, which
enables the
electric riding lawn mower 100 to output high power, and last a long time,
saving the
trouble of repeated charging.
[0113] In a horizontal direction along the first straight line 101 or along
a rotation axis
perpendicular to the second axis 103, the distance L4 between the center C of
the battery
compai __ intent housing 16a provided on the rear side of the seat 12 and the
second axis 103
of the second walking wheel 142 is less than or equal to 500 mm.
Alternatively, the
horizontal distance between the center of gravity of the electric riding lawn
mower 100
with the first battery pack 161 mounted and the center of the rotating shaft
of the second
travelling wheel 142 is less than or equal to 500 mm. Alternatively, the
horizontal
distance between the center of some of the first battery compai ________
intents 162 and the center
of the rotating shaft of the second walking wheel 142 is less than or equal to
500 mm.
Alternatively, the horizontal distance between the center of all of the first
battery
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compat __ intents 162 disposed on the rear side of the seat 12 and the
rotating shaft of the
second travelling wheel 142 is less than or equal to 500 mm. Further, In a
horizontal
direction along the first straight line 101 or along a rotation axis
perpendicular to the
second axis 103, the distance L4 between the center C of the battery
compaiiment
housing 16a provided on the rear side of the seat 12 and the second axis 103
of the
second walking wheel 142 is less than or equal to 300 mm. Alternatively, the
horizontal
distance between the center of gravity of the electric riding lawn mower 100
with the first
battery pack 161 mounted and the center of the rotating shaft of the second
travelling
wheel 142 is less than or equal to 300 mm. Alternatively, the horizontal
distance between
the center of some of the first battery compaiiments 162 and the center of the
rotating
shaft of the second walking wheel 142 is less than or equal to 300 mm.
Alternatively, the
horizontal distance between the center of all of the first battery
compatiments 162
disposed on the rear side of the seat 12 and the rotating shaft of the second
travelling
wheel 142 is less than or equal to 300 mm. This increases the positive
pressure of the
second travelling wheel 142 against the ground and the grip of the second
travelling
wheel 142, and reduces the torque required for the electric riding lawn mower
100 in
zero-turns to make zero-turns more flexible. The horizontal distance between
one point
and another point or line recited in the present disclosure refers to the
projection distance
between the two on the horizontal plane when the electric riding lawn mower
100 is
placed on a horizontal ground. Similarly, the vertical distance between one
point and
another point or line recited in the present disclosure refers to the
projection distance
between the two on the vertical plane when the electric riding lawn mower 100
is placed
on a horizontal ground.
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[0114] That is to say, the distance L4 between the center C of entirety
constructed by
some or all of the first battery compai intent 162 provided on the rear
side of the seat 12
and the second axis 103 of the second travelling wheel 142 is less than or
equal to 300
mm. When all of the first battery compai ______________________________
intents 162 in the power supply device 16 are
provided with the first battery packs 161, the distance between the center of
gravity G3 of
the power supply device 16 on the rear side of the seat 12 and the second axis
103 of the
second travelling wheel 142 is less than or equal to 300mm. Therefore, this
increases
positive pressure of the second travelling wheel 142 on the ground and the
friction
between the second travelling wheel 142 and the slope surface when the
electric riding
lawn mower 100 climbs uphill, thereby improving the climbing ability of the
riding
electric lawn mower 100, and avoiding slippage during walking on the ground or
climbing up the hill; in addition, this reduces the torque required for the
electric riding
lawn mower 100 in zero-turns, allowing more flexible turns to be performed by
the
electric riding lawn mower 100.
[0115] In a direction perpendicular to the first straight line 101 and
perpendicular to the
second axis 103, the distance between the center C of the battery compartment
housing
16a disposed on the rear side of the seat 12 and the second axis 103 of the
second
travelling wheel 142 is less than or equal to 300 mm, that is, in the up-down
direction, the
distance between the center C of the battery compai ___________________ intent
housing 16a disposed on the
rear side of the seat 12 and the second axis 103 of the second travelling
wheel 142 is less
than or equal to 300 mm. It can be understood that, in a direction
perpendicular to the
first straight line 101 and perpendicular to the second axis 103, the distance
between the
center C of entirety constructed by some or all of the first battery
compartment 162
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provided on the rear side of the seat 12 and the second axis 103 of the second
travelling
wheel 142 is less than or equal to 300 mm, that is, in the up-down direction,
the distance
between the center C of entirety constructed by some or all of the first
battery
compm __ intent 162 provided on the rear side of the seat 12 and the second
axis 103 of the
second travelling wheel 142 is less than or equal to 300 mm. In other words,
the vertical
distance between the center of at least some of the first battery compm __
intents 162 and the
center of the rotating shaft of the second travelling wheel 142 is less than
or equal to 300
mm. Or the distance between the center of gravity of the electric riding lawn
mower 100
with the first battery pack 161 mounted and the center of the rotation axis of
the second
travelling wheel 142 is less than or equal to 300 mm. In other words, the
vertical distance
between the center C of all the first battery compm _____________________
intents 162 disposed on the rear side of
the seat 12 and the rotating shaft of the second travelling wheel 142 is less
than or equal
to 300 mm. This helps lowering the center of gravity G1 of the entire electric
riding lawn
mower 100, thereby reduces the possibility of rollover to the back when the
electric
riding lawn mower 100 climbs uphill, the possibility of rollover to the front
when the
electric riding lawn mower 100 goes downhill, and the possibility of rollover
to the side
when the electric riding lawn mower 100 walks on uneven ground.
[0116] Further, the distance between the center of at least some of the
first battery
compm __ intent 162 and the center of the rotation axis of the second walking
wheel 142 in
the left-right direction is less than 100 mm, in other words, the distance
between the
center of gravity of the electric riding lawn mower 100 installed with the
first battery
pack 161 and the center of the rotation axis of the second walking wheel 142
in the
transverse direction of the riding type electric lawn mower 100 is less than
100 mm, so
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that the center of gravity of the whole machine is closer to the center axis
105 of the
whole machine, so that the machine is less likely to tip over when travelling
transversely
or laterally on the slope.
[0117] In a direction parallel to the second axis 103, the distance between
the center C of
the battery compai __ intent housing 16a disposed on the rear side of the seat
12 and the
center of the two second travelling wheels 142 is less than or equal to 100
mm; that is, in
the left-right direction, the distance between the center C formed by all the
numbers of
the first battery compaiiments 162 disposed on the rear side of the seat 12
and the center
of the two second travelling wheels 142 is less than or equal to 100 mm. This
enables the
center of the power supply device 16 to be placed as close as possible to the
center axis
105, particularly in the case where the shape of the power supply device 16 is
relatively
regular, which causes the center of gravity of the power supply device 16 to
be placed as
close as possible to the center axis 105, to avoid the problem of rollover in
the left-right
direction when the electric riding lawn mower 100 travels laterally on the
slope surface,
thereby improving the stability performance of the electric riding lawn mower
100.
[0118] As described above, the number of the second travelling wheels 142
is two, and
the two second travelling wheels 142 are symmetrically disposed on both sides
of a plane
of symmetry, and in the present example, the entirety constructed by all of
the first
battery compai __ intents 162 on the rear side of the seat 12 is symmetrically
disposed about
the plane of symmetry, thereby improving the balance performance of the whole
machine.
[0119] Referring to FIG. 12 or FIG. 13, in the example of the present
disclosure, all the
battery packs disposed on the rear side of the seat 12 are such that the
center of at least
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some battery packs is located on the right side of the center axis 105 of the
electric riding
lawn mower 100, and the center of the other battery packs is located on the
left side of
the center axis 105 of the electric riding lawn mower 100. Here, the center
axis 105 of the
electric riding lawn mower 100 is parallel to the front-rear direction or the
forward
direction of the machine. In some other examples of the present disclosure,
assuming that
the electric riding lawn mower 100 employs at least one large-sized battery
pack, a
portion of the at least one battery pack disposed on the rear side of the seat
12 is disposed
on the right side of the center axis 105 of the electric riding lawn mower
100, and the
other portion of the at least one battery pack is disposed on the left side of
the center axis
105 of the electric riding lawn mower 100. The battery pack is arranged such
that the
center of gravity of the electric riding lawn mower 100 is located near the
center axis 105
or closer to the center axis 105 of the whole machine, which is advantageous
for
balancing the center of gravity of the electric riding lawn mower 100.
[0120] As shown in Fig. 13, all the battery packs of the electric riding
lawn mower 100
are provided, besides on the rear side of the seat 12 as shown in Fig. 12, on
the front side
of the seat 12. Disposing some battery packs on the front side of the rotating
shaft of the
second travelling wheel 142, and the other battery packs on the rear side of
the rotating
shaft of the second travelling wheel 142 increases the positive pressure of
the second
travelling wheel 142 against the ground and the grip of second travelling
wheel 142, and
reduces the torque required for the electric riding lawn mower 100 in zero-
turns to make
zero-turns more flexible. In this example, the battery packs on the front side
of the seat 12
may be fixedly mounted to the electric riding lawn mower 100; and the battery
packs on
the rear side of the seat may be detachably mounted to the electric riding
lawn mower
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100. In some other examples of the present disclosure, if the battery pack
provided in the
electric riding lawn mower 100 is a large-sized battery pack, a portion of the
large-sized
battery pack is located on the front side of the rotating shaft of the second
travelling
wheel 142, and the other portion of the large-sized battery pack is located on
the front
side of the rotating shaft of the second travelling wheel 142, so as to
increase the positive
pressure of the second travelling wheel 142 against the ground and the grip of
second
travelling wheel 142, and reduce the torque required for the whole machine in
zero-turns
to make zero-turns more flexible.
[0121] In order to prevent the first battery pack 161 from being detached
from the first
battery compai __ intent 162, a vibration damping device is further disposed
between the
power supply device 16 and the main frame 11, so that the first battery pack
161 can be
prevented from being detached from the first battery compaitment 162, thereby
improving the effective electrical connection between the first battery pack
161 and the
first battery compai intent 162.
[0122] When the first battery pack 161 is inserted into the first groove
162a, the
dimension of the cross section of the first battery pack 161 in a plane
perpendicular to the
direction of the second straight line 104 along the direction in the first
straight line 101 is
smaller than the dimension of the cross section along the direction
perpendicular to the
first straight line 101 and parallel to the plane, that is, when the first
battery pack 161 is
inserted into the first groove 162a, the first battery pack 161 has a thinner
dimension in
the direction perpendicular the first straight line 101 than in the direction
of the first
straight line 101, thereby facilitating the user to grasp the first battery
pack 161 to insert
the first battery pack 161 into the first groove 162a or pull it out from the
first groove in
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162a.
[0123] The first battery pack 161 may specifically include a first battery
pack housing
161b and a plurality of battery cells 161a disposed in the first battery pack
housing 161b.
The direction in which the battery cells 161a extends in the first battery
pack 161 is
parallel to the direction of the second line 104 in which the first battery
pack 161 is
inserted into the first groove 162a.
[0124] As shown in FIG. 1, the electric riding lawn mower 100 may further
be provided
with a grass collecting device 17 for collecting grass, and the grass
collecting device 17
may be detachably connected to the main body portion of the electric riding
lawn mower
100. The grass collecting device 17 specifically includes a grass collecting
basket 171
and a connecting pipe 172; the grass collecting basket 171 is for
accommodating the cut
grass clippings, and the connecting pipe 172 is connected to the bottom plate
133 and the
grass collecting basket 171 to deliver the grass clippings to the grass
collecting basket
171. In the present example, the power supply device 16 is disposed on the
rear side of
the seat, and the power supply device 16 further includes a battery compai
intent housing
16a. The plurality of first battery packs 161 of the power supply device 16
are arranged
substantially in a plane perpendicular to the up-down direction. This allows
the shape of
the battery compai __ intent housing 16a to be substantially disposed in the
plane such that
the upper side of the cover 16c of the battery compaitment housing 16a and the
rear side
of the seat 12 have a large free space, which allows the grass basket 171 to
be placed on
the upper side of the battery compai intent housing 16a, thereby saving
space, and making
the structure of the whole machine more reasonable and more compact.
Furthermore, due
to its light weight, placing the grass basket 171 on the rear end of the
electric riding lawn
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mower 100 does not have a great impact on the center of gravity of the whole
machine.
Therefore, it can be understood that the center of gravity of the electric
riding lawn
mower 100 or the center of gravity of the entirety of the electric riding lawn
mower 100
and the user can be understood as either including the grass collecting device
17 or not
including the grass collecting device 17.
[0125] The electric riding lawn mower 200 of the second example shown in
FIG. 13 may
have the same main frame 21, seat 22, power output assembly 23, walking
assembly 24
and operating assembly 25 as the electric riding lawn mower in the first
example. This
example only differs from the first example in that the power supply device 26
includes a
second battery pack 263 besides the first battery compai intent 262 and the
first battery
pack 261 as in the first example. The parts of the first example that are
compatible with
this example can be applied to this example, and details are not described
herein.
[0126] In the present example, the second battery pack 263 can be disposed
on the lower
side of the seat 22, so that the center of gravity G of the whole machine in
the direction
along the first straight line 201 can be as close as possible to the seat 22
and the first
travelling wheel 241 in order to effectively avoid the problem of tilting up
when the
electric riding lawn mower 200 climbs uphill; and this also increases the
positive pressure
of the first travelling wheel 241 against the ground and the grip of the first
travelling
wheel 241 to prevent the electric riding lawn mower 200 from slippage when
walking on
the ground; further, especially when the rear end of the electric riding lawn
mower 200 is
provided with the grass collecting device, the structure of the second battery
pack 263
being disposed on the lower side of the seat 22 can effectively reduce the
center of
gravity G of the electric riding lawn mower 200, thereby improving the
stability of the
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whole machine. Further, the second battery pack 263 is also disposed on the
front side of
the second travelling wheel 242.
[0127] In addition, in the example, the second battery pack 263 may be
fixedly mounted
to the main frame 21, that is, the second battery pack 263 is not quickly
removable by the
user without using auxiliary tools, so that the second battery pack 263 can be
fixed on the
main frame 21 to continuously supply power to the electric riding lawn mower
200,
thereby avoiding the situation when both the first battery pack 261 and the
second battery
pack 263 in the power supply device 26 are removed by the user such that the
walking
assembly 14 does not have power supply and that the electric riding lawn mower
200
cannot walk. Of course, it can be understood that the second battery pack 263
can also be
configured to be detachable or pluggable by the user.
[0128] The position of the second battery pack 263 is not limited to being
disposed on
the lower side of the seat 22, in fact, as long as it is distinguished from
the position of the
first battery pack 261 because of considerations in balance performance or
structural
adaptation of the whole machine, it is within the scope of this disclosure.
[0129] In the present example, only one second battery pack 263 is provided
on the lower
side of the seat 22. Of course, it can be understood that the second battery
pack 263 on
the lower side of the seat 22 may also be two or more. In the direction
perpendicular to
the first line 201 and the first axis 202, the distance between the center of
gravity of the
entirety formed by all the battery packs in the power supply device 16 and the
second
axis 203 is less than 300 mm, that is, the distance between the center of
gravity of the
entirety formed by all the first battery packs 261 plus all the second battery
packs 263 and
the second axis 203 is less than 300 mm, such that the center of gravity of
the entire
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electric riding lawn mower 200 can be lowered, thereby avoiding the problem of
rollover
on the slope.
[0130] In addition, in other examples, it is also possible to configure one
or more of the
first battery packs 261 disposed on the rear side of the seat 22 to be fixedly
mounted to
the main frame 21, which also prevents the electric riding lawn mower 200 from
the
problem of being unable to walk due to the lack of power source.
[0131] In the third example shown in FIG. 14, the electric riding lawn
mower 300 may
have the same main frame 31, seat 32, power output assembly 33, walking
assembly 34
and operating assembly 35 as the electric riding lawn mower 100 of the first
example.
This example only differs from the first example in that the power supply
device 36
includes only a first battery pack 361 having a larger capacity, and the first
battery pack
361 can be detachably coupled to electric riding lawn mower 300 with a
pluggable
approach performed by the user. In the fourth example shown in FIG. 15, the
electric
riding lawn mower 400 may have the same main frame 41, seat 42, power output
assembly 43, walking assembly 44 and operating assembly 45 as the electric
riding lawn
mower 100 of the first example. This example only differs from the first
example in that
the power supply device 46 includes a power supply interface 46a for
connecting a
backpack power supply device 410 such that when the user sits in the seat 42,
the user
can carry the backpack power supply device 410 on the back to facilitate the
operation of
the electric riding lawn mower 400.
[0132] The basic principles, main features and advantages of the present
disclosure have
been shown and described above. It should be understood by those skilled in
the art that
the above-described examples are not intended to limit the disclosure in any
way, and the
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technical solutions obtained by means of equivalent replacement or equivalent
transformation are all within the scope of the disclosure. It will also be
understood that
the present disclosure provides an electric riding lawn mower with better
adaptability and
less usage cost.
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