Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02655542 2009-02-25
SPECIFICATION
TITLE OF INVENTION
A Push and Pull Vehicle by Stand-and-Sit Action
CROSS REFERENCE TO RELATED APPLICATION
This application claims the benefit of and priority from US provisional
application No.
61/031,696 filed on 02/27/2008, and in part of Canada application No.
2,639,973 filed on
10/07/2008
BACKGROUND OF INVENTION
Field of the invention
This invention relates to a push-and-pull action to power a vehicle or a
vehicle
powered by body weight action. Normally a push-and-pull vehicle's handlebar
needs
to do both on push-and-pull action and steering action; this complicates its
steering
mechanism. This invention works on opposite force of a push-and-pull vehicle:
use
a fixed position on hand and let body weight push on a moving seat or on a
treadle,
it is as same result as pushing or pulling by hands on a fixed body position.
This
invention achieves same result as a man powered push-pull vehicle and avoid
its
complicate steering mechanism; Since no push-pull involve on steering.
Brief Description of the Prior Art
The US patent 5192089, Paddle Operate Scooter has a seesaw standing
paddle, and uses one foot to push front end of the seesaw peddle and another
foot
push at rear end of the seesaw peddle, and each links to a chain to drive one-
way
sprocket at each side of rear wheel to power scooter forward.
Prior art needs a user stands at lateral posture because feet standing at a
front-
and-back direction while upper body and both hands are at left-and-right
direction,
this makes it difficult to maneuver, and get tired and uncomfortable at waist,
shoulder and neck because keeping body on twisting posture all the time. Even
though, steps on a seesaw peddle both sides only work on two legs mussel, it
is
nothing new other than a regular bicycle exercise, and get boring and
uncomfortable
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very quick.
By adding a moving seat at rear end of the seesaw paddle, this invention
design a user both hands pulling on handlebar together with feet both standing
up
naturally at front end of seesaw paddle to drive vehicle forward, and also
both hands
push handlebar, same time hip sits on said moving seat at rear end of seesaw
paddle to drive vehicle forward continuously. This invention develops a
rocking
action which refers as a pushing-sitting and pulling-standing action
hereafter. It uses
hands, arms, stomach, waist, legs and feet all the time with a balanced
posture, it
makes vehicle running mostly by body weight, it is easy and faster, speed,
good
exercise and fun.
SUMMARY OF THE INVENTION
This invention A Push and Pull Vehicle by Stand-and-Sit Action solve above
mentioned problems and provides a solid turning, fast reaction steering
feeling as a
regular bicycle. It focuses on opposite force of pulling and pushing; this
gets same
result as a push-and-pull action vehicle. It contains,a handlebar with a
steering
column on steering, a treadle and a moving seat working together as leverage
against each other, and output to an increasing ratio device to magnify
driving stroke,
and use two one-way devices to drive on rear wheel at a continuous cycle.
BRIEF DESCRIPTION OF DRAWING
Fig. 1 shows this invention at end of pushing state.
Fig. 1 a shows a change-direction mechanism by driving at outside of a chain
loop.
Fig. 2 shows a binding mechanism on two pivotal shafts type at end of pushing-
sitting state.
Fig. 3 shows this invention with a vertical moving seat type at end of pulling-
standing-up state.
Fig. 4 shows top view of independent treadle pivot shaft and independent
moving
seat pivot shaft and with increasing gear ratio device and change-direction
mechanism.
Fig. 5 shows a side view of a seesaw beam type, which moving seat with a big
gear
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drives an increasing ratio device and drives on a derailer device.
Fig. 5a shows a side-view of changing direction by two meshing gears type.
Fig. 6 shows a transparent side view of a single pivot shaft type application.
Fig. 7 shows a top view of this invention with single pivot shaft and
increasing ratio
device.
Fig. 8 shows a side-view of a single treadle function apply on a bicycle
application.
Fig. 9 shows a top-view of a single treadle function apply on a bicycle
application.
Fig. 10 shows a side-view of a seesaw type on a bicycle application.
Fig. 11 shows a top-view of a seesaw type on a bicycle application.
Fig. 12 shows a foldable front wheel assembly and vertical treadle type with a
seesaw angled beam.
Drawing number list:
1 steering column, 3 front wheel, 5 chassis, 6 6a chain, 7 7a one-way device,
8 rear
wheel, 14 handlebar, 25 increasing ratio device, 25a input gear, 25b 25c gear
set,
41 42 stroke limiter, 43 peddle, 43a peddle shaft, 44 derailer chain, 45 one-
way
bearing, 51 53 gear, 55 chain, 55a 55b idler, 56 driven sprocket, 56a sprocket
shaft,
56b big-sprocket set, 56c bearings, 60 A Push and Pull Vehicle by Stand-and-
Sit
Action, 61 Front wheel assembly, 61 a steering mechanism, 63 rear wheel
assembly,
63a derailer, 64 change-direction mechanism, 68 rocking device, 68a rocking
output,
70 moving seat, 70a seat-arm, 70b seat-arm pivotal shaft, 70d fixed seat, 71
treadle,
71 a treadle-arm, 71 b treadle-arm pivotal shaft, 71 d counterweight, 71 e
hooking-bar,
72 distributing shaft, 72a sprocket, 72b sprocket, 72c idler, 73 binding
mechanism,
73a peesaw beam, 73b single pivotal shaft, 73c gear, 73d chain, 73e gear set,
73f
gear, 74 sprocket, 75 shaft, 75a stopper cushion, 76 shaft, 77 gear, 78 shaft,
79
step gear, 80 sliding gear, 81 shifter, 82 shifter lock, 84 long key, 85 shaft
sleeve, 86
pin, 87 nut, 88 gear section rack 88a small gear, 88b sprocket, 88c chain.
DETAIL DESCRIPTION OF THE INVENTION
Refer to Fig. 1 and 1 a, A Push-and-Pull Vehicle by Stand-and-Sit Action 60,
contains a frame or a chassis 5; a front wheel assembly 61 with a steering
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mechanism controlled by a handlebar 14 at front end of said chassis 5; a rear
wheel
assembly 63 with rear wheel(s) 8 driven by two one-way device 7, 7a; a rocking
device 68 on said chassis 5 between front assembly 61 and rear wheel assembly
63,
and contains a rocking driving means 68a to drive an increasing ratio device
25 and
a change-direction mechanism 64 which contains one forward one reverse
direction
driving on said two one-way device 7, 7a respectively to drive rear wheel 8
forward;
Said rocking device 68 which contains a treadle 71 with leverage by treadle-
arm
71 a which having a pivotal shaft supported 71 b by chassis 5, a moving seat
70 with
a leverage by seat-arm 70a which having a pivotal shaft supported 70b by
chassis 5;
a binding mechanism 73 containing gears, timing gear, sprockets, chains etc.
and
connects said treadle-arm 71 a and seat-arm 70a together to makes said
treadle's
torque against said moving seat's torque, treadle 71 down will cause moving
seat 70
up, treadle 71 up will make moving seat 70 down; and a rocking driving means
68a
on one of said pivotal shaft 70b 71 b or said rocking driving means 68a under
both
torque arm 70b 71 b and drive said increasing ratio device 25;
Said rocking driving means 68a includes a rotating means which rotates with
said pivotal shaft, such as a gear 25a, a sprocket, a pulley, a timing gear or
any
rotating means on rocking pivotal shaft which connects its output driving
power to
said increasing ratio device's input shaft;
Said rocking driving means 68a also includes pulling means such as chain or
cable under said treadle-arm and seat-arm; one pulling means links under
treadle,
another pulling matter links under moving seat, both pull means been guided by
idlers to encircle inputs shaft rotating means of said increasing ratio device
25, and
the other end of each said pulling means holds by a return spring on said
chassis 5.
Fig. 2 shows a pushing-sitting action; whole body weight lands on moving seat
70 by hip and pushes said moving seat 70 down, by a binding means 73 to make
rocking driving means 68a turning (this example is a rotating means as a gear
on
treadle pivotal shaft), and drives increasing ratio device 25, refer to Fig 1
a, it finally
pulls chain 6 forward, which drives one-way sprocket 7 at one side of rear
wheel 8
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forward; distributing shaft 72 reverse its rotation because been driven by
outside
loop of chain 6 and cause chain 6a reverse direction which action is allowed
by one-
way device 7a; same time the treadle 71 has no body weight and been raised up
by
gear 73f which is driven by gear 73c to reset its cycle. Fig 3 shows a pulling-
standing action; whole body stand-up by feet and weight landing on the treadle
71,
cause rocking output 68a (still a gear type in same example) reverse its
rotation,
also increasing ratio device 25 changes output direction, finally drives chain
6
moving backward; chain 6a become forward direction and drives one-way device
7a
at another side of rear wheel 8 forward; same time the moving seat 70 has no
body
weight and is raised up by 73c which is driven by 73f; and cycle continues.
Said front wheel assembly 61 contains front wheel 3 and a well-known steering
mechanism, it includes a single front wheel type as bicycle, tricycle which
contain a
handlebar 14, a steering column 1, a front wheel 3 on a front wheel fork; also
includes a two-front wheel type vehicle as quads which contains a handlebar
14, a
steering column 1, and linkages to link two front wheels moving together.
The rear wheel assembly 63 contains rear wheel 8, includes a single wheel type
as bicycle, or a two-wheel type as a tricycle or a car type vehicle. It also
may include
a bicycle's derailer device 63a (or derailleur, which including big-sprocket
set 56b,
chain 44, position unit, one-way sprocket stack, controlling wire, and handle
with
indicator, all refer to derailer device.) to change rear wheel speed at
handlebar area.
The chassis 5 holds the front wheel assembly 61, the pivot support for rocking
device 68, increasing ratio device 25, change-direction mechanism 64 and the
rear
wheel 'assembly 63, also it supports some of the guide idler as needed; it can
be
any shape and size as needed. Fig 4 shows, 2 parallel plates which allows
treadle-
arm and seat-arm at outside of frame, and let inside room for increasing gear
ratio
device and chains to drive rear gear (as illustrated) or vice versa or all
inside. The
chassis 5 also includes all kind of frame type as a single front-wheel as a
scooter,
bicycle, tricycle and two-front wheel type as a quads etc, all refer to the
chassis 5.
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The increasing ratio device 25 magnify rocking stroke big enough to speed up
vehicle. which consists of a big gear together with a small gear as a gear
set, and
one set's big gear meshes another set's small gear, and continue this serial
connection arrangement till reach to a gear ratio needed to match up the rear
wheel
dimension. If all gear sets are on two shaft, all gear sets are rotate freely
on shaft,
For example: rocking device make a 45 degree swing per 3 second from treadle
71
or moving seat 70, and generates 5 to 10 mile per hour speed on a 20" rear
wheel, it
needs an increasing ratio over 6 times. Said gear sets include different type
rotating
means as sprockets and chains, pulleys and belts, timing gears and timing
belts etc;
also, it can be arranged at any suitable location to fit any type vehicle
application, or
be arranged a pre-increase ratio before reaching gear shifting device, such as
bicycle derailer device 63a to select speed; this arrangement solves most of
heavy
load at beginning gears and make easy on down stream devices such as derail,
gear shifting, one-way sprocket or one-way bearing etc. Gear may attach a
sprocket
to convert to a chain, drive type to transmit power on a longer distance
reason.
Said change-direction mechanism 64 make treadle and moving seat stroke both
action active, normally is driven by said increasing ratio device 25, but it
also can be
arranged before increasing ratio device 25 to avoid power loss by inertia
while
reversing rotation. Said change-direction mechanism 64 diverts one power into
two
powers, one forward rotation driving on one of said two one-way devices, at
same
time, another reverse rotation driving on another of said two one-way devices,
and
use both one-way devices driving on a same output. There are many well-known
ways to change rotation direction and a common one is adding one more gear on
treadle action or on moving seat action before both reaching to one-way
devices to
drive rear wheel, and both reset by a return spring. This invention also uses
following two ways to change direction as described.
Fig. 1 a shows distributing shaft 72 contains two sprockets 72a and 72b at
both
end, one is driven by a driving chain from outside of chain loop, another
sprocket
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transmits power by another chain from inside of chain loop; sprocket 72a been
changed direction by connecting at outside loop of pulling chain 6 which
powered
from rocking device 68, another sprocket 72b connects inside loop of chain 6a
to
drive one-way device 7a at other side of rear wheel 8; idler 72c ensure the
chain 6
engagement from sprocket 72a to one-way device 7 of rear wheel 8.
Fig. 5a shows two mashing gear 51 53, each has its own one-way sprocket 7,
7a in same direction respectively, a chain 55 encircles both sprocket 7, 7a
and
drives a driven sprocket 56 which finally drives rear wheel 8, idler 55a 55b
are
guiding idlers or insure engagement if needed; either 51 or 53 turns at either
direction, one of sprocket (7 or 7a) will drive 56 at one direction only; this
arrangement is extreme compact, less shaft needed, simple and easy to transmit
longer distance; this is much suitable using a bicycle derailer device 63a as
Fig. 9
shows. Said two one-way devices 7, 7a, each can be a bicycle freewheel, a
ratchet
or a one-way bearing, both at same one-way direction arrangement; they also
can
be used for vehicle coasting function.
Said moving seat 70 can be any shape for user to sit, Refer to Fig 4, moving
seat
connects at one end of seat-arm 70a on each side of chassis 5 which forms as a
pair of seat-arm 70a for balance reason, another end of said seat-arm 70a
solid
connects to its pivotal shaft 70b which according to condition need, may goes
through (as illustrated) on said chassis bearings and solid connects to
another side
of seat-arm 70a, or both side of seat-arm 70a solid connects to its own pivot
shaft
70b which is supported by each side chassis bearing; one type of said moving
seat
is fixed on its seat-arm 70a as one body, and slanting following pivot center
when
turns (as Fig 1 showed) which will help hip pushing angle; another type is
keeping
said moving seat 70 moving vertically all the time as Fig 2 shown for a
comfortable
ride. Refer to Fig 2, there are a pair of hinges above a pair of pivot shaft
70b, and
two pair of hinges under moving seat 70 side and a pair of parallel bars above
two
seat-arm 70a, and make parallelogram all the time when seat-arm 70a turns,
this
make both side moving seat frame vertical all the time to provide moving seat
70
vertically when moving as Fig. 3 shows. Fig 1 shows moving seat 70 is one part
with
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seat-arm 70a, so whole seat angle changing according to gear 73c's center
point.
For a compact arrangement the seat can be detached from seat socket for easy
storage as Fig. 12 shows. In order to keep smooth at end of swing stroke,
there is a
cushion spring 75a to keep seat comfortable during changing cycle.
Refer to Fig 4, said treadle 71 connects at one end of treadle-arm 71 a which
is
preferable (but not limit to) on each side of chassis and forms as a pair for
balance
reason, another end of treadle-arm 71 a solid connects its pivotal shaft 71b
which
same condition as moving seat mentioned, goes through said chassis (not
illustrated)
or has its individual pivot support on each side of chassis according to
situation
need (as illustrated); one type of said treadle 71 is fixed on said treadle-
arm 71 a,
and slant following pivot center when turns as Fig 6 showed which help feet
step
down angle; another type keeps treadle moving vertical all the time as
described
parallelogram method for a comfortable ride as Fig 12 shows. Treadle 71 can be
a
round bar, plate, platform, bicycle peddle or any shape, let feet step down
and
generate torque.
in order to reset cycle by each other, binding mechanism 73 links said pivotal
shaft 70b, 71 b by gears, linkages or sprockets and chain, and in a way makes
a
seesaw effect which reset each other on each cycle as Fig 4 shown, also Fig 2
shows gear 73c on pivot shaft 70b, a chain 73d to a gear set 73e then a gear
73f on
pivot shaft 71 b, this also makes a motion ratio adjustment between moving
seat 70
and treadle 71, set a different ratio to get best comfortable working action
balance
because sitting a longer time on each cycle may more comfortable than
standing.
Said treadle pivotal shaft 71 b and moving seat pivotal shaft 70b are solid
connected with its own leverage arm 70a, 71 a and pivotal supported by
bearings on
chassis 5, also, one or both pivotal shafts contain said rocking driving means
68a to
drive said increasing ratio device 25 or said change-direction mechanism 64;
since
both pivotal shafts 70b, 71 b are separated and independently, the treadle
treadle-
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arm 71 a and moving seat seat-arm 70a can be setup rotates clockwise or
counterclockwise direction independently, furthermore either one can be exist
independently to simplify the structure; In case of only treadle portion exist
with
single one-way device 7, treadle can be reset by a return spring (not show) or
by a
foot hooking-bar 71e, which is a part of treadle, just above feet so when feet
move
up, it hook with foot moving up and reset cycle by foot; in case only moving
seat
exist, moving seat can be reset by a return spring so when standing action,
spring
pull moving seat up to reset cycle.
Said moving seat pivot shaft 70b and said treadle pivot shaft 71 b can be
combined as one pivotal shaft 73b and forms a seesaw beam 73a shape as prior
art
states, or seesaw beam 73a forms an angle (preferable between 120 to 180
degree)
between two lever arms for a lower pivotal shaft application as Fig 6 shows.
Said
seesaw beam 73a front end supports treadle 71, rear end supports moving seat
70,
seesaw's single pivotal shaft 73b is supported by bearings (not illustrate) on
said
chassis 5.
Fig 5 shows a rotating means by a section of a big gear 88 connecting behind
seat frame drives a small gear 88a, which attach a bigger gear 88b and drives
a
chain 88c to said increasing gear ratio device 25; this is same effect as a
big gear
from pivot shaft 73b. Fig. 5 also indicates the way of changing rotation
direction by
two mashing gears, each gear with a one-way sprocket device; both on same
check
direction arrangement, so one gear driving sprocket causes chain forward while
another one-way sprocket device at free rotation direction and allows its gear
rotates
backward during non-active cycle, and vice versa, and keep chain rotation
always
on forward direction, and drive derailer 63a to change speed. As for a pulling
matter
application, same as prior art, using a chains links under said treadle 71 and
another chain links under moving seat 70, both chains been guided by some
idlers
to encircle inputs sprocket of said increasing ratio device 25 and the other
end of
each chain hold by a return spring (not illustrate) on said chassis.
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Fig 4, 6, 7 shows only one example of many ways of increasing ratio, gear
shifting and switch rotation method all together. Refer to Fig 7 is a top
view, Fig 6 is
a transparent side view for reference purpose; step down treadle 71 makes
moving
seat 70 rising up for next action seat cycle; since single pivotal shaft 73b
solid
connection with two input gear 25a, each connects in serial with two gear sets
which
free rotate on shaft, and then both drive shaft 77; this will take most of
heavy load by
doubling driving at same time. Gear 77 increases another partial of gear ratio
again
and finally meshes to long gear 79 which has 3 different gears as one part in
a
difference position for gear shifting. (One with 4 times gear width, another
with 2
times gear width). Gear 79 mashes with gear 80 which has 3 different gears in
one
part with each in a difference location. (The biggest gear with 2 gear width).
Gear 80
controlled by a fork on shifter 81. Different space makes one gear move out
meshing before next gear engages in to avoid meshing 2 difference gear ratios
at
same time. Shifter 81 can be rest at pre-determine position by gear selector
82.
There is a shaft sleeve 85 to keep shifter 81's shaft short to prevent stick
out when
shifting. Gear 80 drives a long key way 84 with sprocket 74 which drive one-
way
device 7. Distributing shaft 72 connects sprocket 72a and 72b. Since 72a
engaging
at outside of chain 6, it switches rotation direction and through chain 6a
drives one-
way device 7a. Both one-way devices are same direction to rear wheel and make
7a
is driving forward and 7 is reversing and coasting. Same way works on hand-
pushing and moving seat push down by body weight cycle, this makes pivot gear
rotate in reverse direction, finally makes one-way device 7 drives rear wheel
while
one-way device 7a is reversing and coasting.
Fig 8, Fig 9 shows only treadle side exist on a fix seat 71 e bicycle
application,
treadle 71 upper side has a hooking-bar 71 e for foot to hook and raises up
and reset
stand-up cycle, there is a counterweight 71d at bottom of treadle to keep hook
bar
71e stay at upper side to make foot easy access, when stand-up on treadle 71
increasing ratio device drive meshing gear type change-direction mechanism,
make
chain 55 drives derailer's big-sprocket set 56b, then use feet hook on hooking-
bar
71 e, use stomach and legs mussel pull treadle up while sit on fix seat 70d,
and cycle
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continue.
Fig. 10, 11 an example of a bicycle shows a see-saw type on this invention
capable together with a regular peddling vehicle to have more selection on
powering
the vehicle; this allow user to select riding as a regular peddling or by body
weight
rocking action. Refer to Fig. 11, treadle and moving seat pivotal shaft 73b
connects
input gear 25a, which drives a free rotating gear set 25b, 25b meshes to a
free
rotating gear set 25c, 25c contains gear 51 which connects one-way device 52,
gear
51 also meshes gear 53 which connects one-way sprocket 54, a chain 56
encircles
two one-way device 52 54 together with a sprocket 56 on sprocket shaft 5681
and
keeping chain tension by an idler sprocket 55a; sprocket shaft 56a also
contains big-
sprocket set 56b of derailer device 63a, and via derailer chain 44 change
speed and
drives rear wheel 8; sprocket shaft 56a outside diameter contains two bearings
56c
each bearing outside ring is supported by chassis 5 at both side, sprocket
shaft 56a
inside diameter contains one-way bearing 45, one-way driven by bicycle peddle
shaft 43a and peddle 43, this one-way bearing 45 allows rocking device 68
overdrive
sprocket shaft 56a while bicycle peddle 43 stay put or at reverse rotation.
Fig. 10
shows position when moving seat 70 and treadle 71 reaches to stopper 41
position
when end of pushing-sitting action, this position also is used for regular
peddling
position; the position of moving seat 70'and treadle 71'are anticipated
position when
end of pulling-standing-up action reaches to stopper 42 position.
Fig 12 show a foldable front wheel assembly, pin 86 locks whole assembly on
chassis 5 by two selectable positions and been secured by a nut 87.
This invention also can be add the suspension system, brake system on wheels,
or lighting for street legal, folding front wheel mechanism as a kick scooter
does.
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