Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02917006 2016-01-07
DESCRIPTION
YO-Y0 BALL WITH FRICTION MOTION ENERGY STORAGE AND
ACCELERATION FUNCTIONS
TECHNICAL FIELD
100011 The present invention relates to a yo-yo ball, and particularly to a
yo-yo ball
with friction motion energy storage and acceleration functions.
BACKGROUND
100021 In the current market, a yo-yo ball consists essentially of two
rotating bodies
and a connecting shaft connecting the two rotating bodies, then a rope
entwines in the
middle of the two rotating bodies. The yo-yo ball body is thrown down at full
tilt so that
the yo-yo ball body can rotate quickly at the end of the rope. However,
limited by a
recovery system and a bearing system of the yo-yo ball, a shorter user is
unable to play
by throwing down the yo-yo ball body by using a rope. This is because the
length of the
rope is in direct proportion to the height of the user. To a taller user,
after the ball body is
thrown down, there is enough acceleration region for the ball body to
accelerate to a
certain speed, to complete various fancy moves. However, to a shorter player,
it is
unable to complete a move because the acceleration region is too short after
the ball
body is thrown down and the rotational speed of the ball body is not fast
enough.
SUMMARY OF THE UTILITY MODEL
100031 An objective of the present invention is to solve the above
problems, and to
provide a yo-yo ball with friction motion energy storage and acceleration
functions
which is slickly designed, highly interesting and which can manually store
energy.
100041 The technical solution of the present invention is implemented as
below:
100051 A yo-yo ball with friction motion energy storage and acceleration
functions,
including two rotating bodies and a connecting shaft connecting the two
rotating bodies,
where either of the rotating bodies includes a disk body and a side cover, the
disk body
can rotate relatively to the side cover, either of the disk bodies is
internally provided
with a friction motion energy storage mechanism, one end of the friction
motion energy
storage mechanism is connected to the disk body and the other end is connected
to the
side cover, by pinching the side cover of the two rotating bodies, the disk
bodies are in
contact with an external contact surface to realize energy storage for the
friction motion
energy storage mechanism by means of friction rolling; after the energy
storage, the disk
bodies are out of contact with the external contact surface, and the friction
motion
energy storage mechanism releases the energy to drive the two disk bodies to
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DESCRIPTION
synchronously rotate towards a direction opposite to a rolling direction.
100061 In order to reduce unnecessary loss of energy released by the
friction motion
energy storage mechanism, in the present invention, either of the disk bodies
is
internally provided with a direction-limiting mechanism disposed in a position
where the
side cover is connected to the friction motion energy storage mechanism, one
end of the
direction-limiting mechanism is connected to the side cover, the other end is
connected
to the friction motion energy storage mechanism, a rotational direction
limited by the
direction-limiting mechanism is the same as an energy storage direction of the
friction
motion energy storage mechanism, by pinching the side cover of the two
rotating bodies,
the disk bodies are in contact with an external contact surface to realize
energy storage
for the friction motion energy storage mechanism by means of friction rolling
towards
the rotational direction limited by the direction-limiting mechanism.
100071 In order to prevent overloaded energy storage from damaging the
friction
motion energy storage mechanism, in the present invention, either of the disk
bodies is
internally provided with an overload protection mechanism disposed in a
position where
the side cover is connected to the friction motion energy storage mechanism,
one end of
the overload protection mechanism is connected to the side cover, the other
end is
connected to the friction motion energy storage mechanism; in case of
overloaded
energy storage for the friction motion energy storage mechanism by pinching
the side
cover, under the action of the overload protection mechanism, the side cover
is
disconnected from the friction motion energy storage mechanism, thereby
realizing to
stop energy storage for the friction motion energy storage mechanism.
100081 In order to reduce unnecessary loss of energy released by the
friction motion
energy storage mechanism and to prevent overloaded energy storage from
damaging the
friction motion energy storage mechanism, in the present invention, either of
the disk
bodies is internally provided with a direction-limiting mechanism and an
overload
protection mechanism which are disposed in a position where the side cover is
connected to the friction motion energy storage mechanism, one end of the
direction-limiting mechanism is connected to the friction motion energy
storage
mechanism, the other end is connected to one end of the overload protection
mechanism,
the other end of the overload protection mechanism is connected to the side
cover, a
rotational direction limited by the direction-limiting mechanism is the same
as an energy
storage direction of the friction motion energy storage mechanism, by pinching
the side
cover of the two rotating bodies, the disk bodies are in contact with an
external contact
surface to realize energy storage for the friction motion energy storage
mechanism by
means of friction rolling towards the rotational direction limited by the
direction-limiting
mechanism; in case of overloaded energy storage for the friction motion energy
storage
mechanism, under the action of the overload protection mechanism, the side
cover is
disconnected from the direction-limiting mechanism, thereby realizing to stop
energy
storage for the friction motion energy storage mechanism.
100091 The direction-limiting mechanism may have multiple structural forms,
and the
direction-limiting mechanism in the present invention includes a plurality of
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DESCRIPTION
direction-limiting blocks, a mounting disk in which all the direction-limiting
blocks are
mounted, and a gear disk which is concavely provided with internal helical
gear teeth,
where the direction-limiting blocks can be automatically rotatably connected,
by means
of pin bolts, to a bottom surface of the mounting disk and protrude above the
mounting
disk; the gear disk is covered on the direction-limiting blocks, in this way,
it is
implemented that limiting claws of the direction-limiting blocks are
unidirectionally
clamped in the internal helical gear teeth to limit the gear disk to
unidirectionally rotate;
one end of the friction motion energy storage mechanism is connected to the
gear disk,
and the overload protection mechanism is connected to the mounting disk.
100101 In order to reduce the number of parts as much as possible, the
overload
protection mechanism includes a circular ring whose arc surface is convexly
provided
with convex teeth, and an internal gear ring engaged with the convex teeth,
the internal
gear ring is disposed on the top surface of the mounting disk, a middle of the
circular
ring is provided with a long convex key, the side cover is correspondingly
provided with
a long key-groove matched up and connected with the long convex key, in case
of
overloaded energy storage for the friction motion energy storage mechanism,
the circular
ring is stressed and deformed so that the convex teeth are disengaged with the
internal
gear ring, thereby implementing that the direction-limiting mechanism and the
friction
motion energy storage mechanism rotate with the disk bodies, and the friction
motion
energy storage mechanism stops energy storage.
100111 The energy storage mechanism of the present invention includes an
energy
storage spring and a spring case, the energy storage spring is placed in the
spring case,
an outside end of the energy storage spring is clamped and connected with the
spring
case, an inside end of the energy storage spring is clamped and connected with
the
direction-limiting mechanism, an energy storage rotation direction of the
energy storage
spring is the same as a rotational direction limited by the direction-limiting
mechanism,
and the spring case is fixedly connected to the disk bodies.
100121 Further, a through hole is formed in the middle of the spring case,
at the lower
part of the gear disk there is provided with a lug that passes through the
through hole and
enters into the spring case, along a periphery of the lug there is provided
with a plurality
of arc-shaped pieces distributed at interval, with a gap kept between the arc-
shaped piece
and the lug, at the lower end of the arc-shaped piece there is provided with a
hook; after
the lug of the gear disk is inserted into the through hole of the spring case,
the hook
stretches out of the through hole to fasten to a side the through hole, in
this way it is
realized that the gear disk is connected to the spring case, and an inside end
of the
energy storage spring is clamped and connected to the arc-shaped piece of the
gear disk.
100131 In order to improve a smooth performance of rotation of the disk
bodies, the
middle of the gear disk is provided with a bearing pedestal on which a bearing
is
mounted, and the connecting shaft is inserted and connected to the bearing
hole.
100141 In order to prevent the disk bodies from damaging due to frequent
friction and
to avoid it is difficult to store energy by means of friction due to small
friction
coefficient of the disk bodies, a disk mouth edge of the disk bodies is
connected with a
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DESCRIPTION
friction ring which is locked and connected to the disk bodies by means of
screws, the
diameter of the friction ring is greater than the disk mouth diameter of the
disk bodies,
the side cover is covered on the outer side surface of the friction ring, and
the side cover
is connected to the connecting shaft by means of bolts.
100151 In the present invention, either of the disk bodies of the rotating
bodies is
internally provided with a friction motion energy storage mechanism, one end
of which
is connected to the disk bodies and the other end is connected to the side
cover, by
pinching the side cover of the two rotating bodies, the disk bodies are in
contact with an
external contact surface to realize energy storage for the friction motion
energy storage
mechanism by means of friction rolling. After the energy storage, the disk
bodies are out
of contact with the external contact surface, and the friction motion energy
storage
mechanism releases the energy to drive the two disk bodies to synchronously
rotate
towards the direction opposite to the rolling direction, at the moment, the
side cover is
released to realize rotation of the whole yo-yo ball body. ln this way, the yo-
yo ball body
can rotate without throwing the yo-yo ball body by a rope. Even if the rope is
too short,
the ball body can rotate at high speed after being thrown out, which is not
affected by an
acceleration region after the ball body is thrown out. Therefore, even though
a shorter
player may enjoy playing with the yo-yo ball to the fullest, and complete
various fancy
moves. Requirements of players at different ages and different heights can be
met.
Compared with an existing yo-yo ball, the yo-yo ball with friction motion
energy storage
and acceleration functions increases a new operation mode and a new playing
method, is
more interesting, and more diversified in playing methods. In addition, either
of the disk
bodies is internally provided with a direction-limiting mechanism and an
overload
protection mechanism, thus unnecessary loss of energy released by the friction
motion
energy storage mechanism is reduced, duration of rotation of the yo-yo ball is
effectively
improved, the friction motion energy storage mechanism can be prevented from
damaging due to overloaded energy storage, and the service life of the yo-yo
ball can be
effectively prolonged. The disk mouth of the disk bodies is connected with a
friction ring
whose diameter is greater than the disk mouth diameter of the disk bodies.
Therefore,
during energy storage by means of friction, the contact friction occurs
between the
friction ring and the contact surface, the disk bodies can be better protected
from friction
and damaging to further prolong the service life of the yo-yo ball, and the
friction
coefficient of the friction ring is large, thus it does not slip during
rolling friction, the
energy storage effect is improved, and it is only needed to replace the
friction ring if the
energy storage effect is decreased. The yo-yo ball is slickly designed, not
only meeting
the requirements of shorter users for entertainment, but also increasing
methods for
playing with the yo-yo ball, being very interesting, meeting children' s
entertainment
needs and psychology of seeking for what is novel, leaving room for players to
give full
scope to creativity in playing methodsõ and making the yo-yo ball be
attractive to them
for longer time.
100161 The following further describes the present invention with reference
to the
accompanying drawings.
4
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DESCRIPTION
BRIEF DESCRIPTION OF DRAWINGS
100171 FIG. 1 is a tridimensional schematic structural diagram of the
present
invention;
100181 FIG. 2 is a schematic structural sectional view of the present
invention;
100191 FIG. 3 is a schematic diagram of a breakdown structure of the
present
invention; and
100201 FIG. 4 is a schematic structural diagram of breakdown of the side
cover, the
overload protection mechanism and the direction-limiting mechanism of the
present
invention.
DETAILED DESCRIPTION OF EMBODIMENTS
100211 As shown in FIGs. 1-4, a yo-yo ball with friction motion energy
storage and
acceleration functions, including two rotating bodies I and a connecting shaft
2
connecting the two rotating bodies 1, either of the rotating bodies 1 includes
a disk body
11 and a side cover 12, the disk body 11 can rotate relatively to the side
cover 12, and
either of the disk bodies 11 is internally provided with a friction motion
energy storage
mechanism 3, one end of the friction motion energy storage mechanism 3 is
connected to
the disk body 11 and the other end is connected to the side cover 12, by
pinching the side
cover 12 of the two rotating bodies 1, the disk bodies 11 are in contact with
an external
contact surface to realize energy storage for the friction motion energy
storage
mechanism 3 by means of friction rolling. After the energy storage, the disk
bodies 11
are out of contact with the external contact surface, and the friction motion
energy
storage mechanism 3 releases the energy to drive the two disk bodies 11 to
synchronously rotate towards the direction opposite to the rolling direction,
at the
moment, the side cover 12 is released to realize rotation of the whole yo-yo
ball body.
Thus, the yo-yo ball body can rotate without throwing the yo-yo ball body by a
rope.
Even if the rope is too short, the ball body can rotate at high speed after
being thrown
down, which is not affected by an acceleration region after the ball body is
thrown down.
Therefore, even though a shorter player may enjoy playing with the yo-yo ball
to the
fullest, and complete various fancy moves. Requirements of players at
different ages and
different heights can be met. Compared with an existing yo-yo ball, the yo-yo
ball with
friction motion energy storage and acceleration functions increases a new
operation
mode and a new playing method, is more interesting, and more diversified in
playing
methods.
100221 As shown in FIG. 3, in this embodiment, either of the disk bodies
11 is
internally provided with a direction-limiting mechanism 4 and an overload
protection
mechanism 5 which are disposed in a position where the side cover 12 is
connected to
the friction motion energy storage mechanism 3. The direction-limiting
mechanism 4 in
this embodiment includes four direction-limiting blocks 41, a mounting disk 42
in which
all the direction-limiting blocks 41 are mounted, and a gear disk 43 which is
concavely
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DESCRIPTION
provided with internal helical gear teeth 431, where the bottom surface of the
mounting
disk 42 is provided with four pin holes 421, the direction-limiting blocks 41
are inserted
into the pin holes 421 by means of pin bolts 9. In this way, it is implemented
that the
direction-limiting blocks 41 are automatically rotatably connected to the
bottom surface
of the mounting disk 42 and protrude above the mounting disk 42. The gear disk
43 is
covered on the direction-limiting blocks 41, in this way. it is implemented
that limiting
claws of the direction-limiting blocks 41 are clamped in the internal helical
gear teeth
431, thus when the gear disk 43 rotates against the direction of the direction-
limiting
blocks 41, the limiting claws are clamped in the internal helical gear teeth
431 so that the
gear disk 43 is unable to rotate, thereby realizing a unidirectional rotation
of the gear
disk 43. The gear disk 43 of the direction-limiting mechanism 4 is connected
to one end
of the friction motion energy storage mechanism 3. The overload protection
mechanism
of this embodiment includes a circular ring 51 whose arc surface is convexly
provided
with convex teeth 511, and an internal gear ring 52 engaged with the convex
teeth 511,
where the internal gear ring 52 is disposed on the top surface of the mounting
disk 42,
i.e., the mounting disk 42 and the internal gear ring 52 adopt a unibody
design, thus the
number of parts may be reduced, the cost may be reduced, and the structure may
be
more compact. A middle of the circular ring 51 is provided with a long convex
key 512,
the side cover 12 is correspondingly provided with a long key-groove 121
matched up
and connected with the long convex key 512, in total three convex teeth 511 of
the
circular ring 51 are provided. In case of overloaded energy storage for the
friction
motion energy storage mechanism 3, namely, when friction rolling is basically
impossible, if the user continues making it forcibly, the circular ring 51 may
be stressed
and deformed so that the convex teeth 511 are disengaged with the internal
gear ring 52,
so the side cover 12 is unable to limit the mounting disk 42, and the whole
direction-limiting mechanism 3 is in a disengaged state, thus it can rotate
with the disk
bodies 11, thereby making the friction motion energy storage mechanism 3 stop
energy
storage.
100231
As shown in FIG 2 and FIG. 3, the energy storage mechanism 3 of this
embodiment includes an energy storage spring 31 and a spring case 32, where
the energy
storage spring 31 is a helical spring, which is placed in the spring case 32,
and the
outside end thereof is fixed to the spring case 32. The spring case 32
includes a case
body 322 and a cover body 321, where a notch 323 is formed at the edge of the
case
body 322, an outside end of the energy storage spring 31 is fixedly connected
to the
notch 323, along the periphery of the cover body 321 there is provided with
three lugs
324 with holes; after the cover body 321 is covered on the case body 322, they
are
aligned by means of holes on the lugs 324 and screw holes on the disk bodies
11, and are
connected and fixed by means of screws. A through hole 320 is formed in the
middle of
the spring case 32. The lower part of the gear disk 43 of the direction-
limiting
mechanism 4 is correspondingly provided with a lug 430 that passes through the
through
hole 320 and enters into the spring case 32, along a periphery of the lug 430
there is
provided with three arc-shaped pieces 432 distributed at interval, with a gap
kept
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DESCRIPTION
between the arc-shaped piece 432 and the lug 430, and at a lower end of each
of the
arc-shaped pieces 432 there is provided with a hook 433. After the lug 430 of
the gear
disk 43 is inserted into the through hole 320 of the spring case 32, the hook
433 stretches
out of the through hole 320 to fasten to a side the through hole, in this way
it is realized
that the gear disk 43 is connected to the spring case 32. An inside end of the
energy
storage spring 31 is clamped and connected to the arc-shaped pieces 432 of the
gear disk
43; the middle of the gear disk 43 is provided with a bearing pedestal 434 on
which a
bearing 6 is mounted, and the connecting shaft 2 is inserted and connected to
the middle
hole of the bearing 6. The disk mouth edge of the disk bodies 11 in this
embodiment is
connected with a friction ring 7, the friction coefficient of the friction
ring 7 is greater
than that of the disk bodies 11, the friction ring 7 is provided with a
countersink, screws
passing through the countersink are screwed into the screw holes at the disk
mouth edge
of the disk bodies 11, thereby implementing a locked connection. The diameter
of the
friction ring 7 is greater than a disk mouth diameter of the disk bodies 11,
thus during
energy storage by means of friction, the contact friction occurs between the
friction ring
7 and the contact surface, the disk bodies 11 can be better protected from
friction and
damaging to further prolong the service life of the yo-yo ball, and the
friction coefficient
of the friction ring 7 is large, thus it does not slip during rolling
friction, the energy
storage effect is improved, and it is only needed to replace the friction ring
7 if the
energy storage effect is decreased. In addition, near the edge of the outer
side surface of
the friction ring 7 there is sleeved with a decorative ring edge 8 which is
downward
provided with arc-shaped convex ribs 81, and the friction ring 7 is
correspondingly
provided with arc-shaped slot holes 71 into which the arc-shaped convex ribs
81 are
inserted, in this way, it is implemented that the decorative ring edge 8 is
fixed to the
friction ring 7.
100241 As
shown in FIG. 4, the side cover 12 of this embodiment is covered on the
outer side surface of the friction ring 7, a countersink 122 is formed in the
middle of the
side cover 12, in the middle of a long convex key 512 of a circular ring 51
there is
provided with a circular hole 513, and the bottom of the long convex key 512
is
concavely provided with a long key-groove 514 which is smaller than the long
convex
key 512. In this embodiment, the middle of the mounting disk 42 and the middle
of the
lug 430 of the gear disk 43 are respectively provided with a through hole
through which
the connecting shaft passes. In this embodiment, an end of the connecting
shaft 2 is
designed to be a long convex key 21 matching up with the long key-groove 514
on the
bottom of the circular ring 51, and the middle of the long convex key 21 is
provided with
a screw hole 22. After the connecting shaft 2 passes through the through holes
of the
mounting disk 42 and of the gear disk 43, the long convex key 21 at the end
thereof is
inserted into the long key-groove 514 of the circular ring 51, a bolt passing,
from the
outer side of the side cover 12, through the countersink 122 of the side cover
12 and the
circular hole 513 of the circular ring 51 is screwed into the screw hole 22 of
the
connecting shaft 2, as shown in FIG. 3. In addition, a main bearing is
disposed between
two rotating bodies 1 of the yo-yo ball in this embodiment, and the rope of
the yo-yo ball
7
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DESCRIPTION
is wrapped around the main bearing.
100251 A playing method of the yo-yo ball is as below:
100261 The yo-yo ball is wrapped around by the rope, pinching the
side cover 12 at
two sides of the yo-yo ball body, then placing the yo-yo ball on a desk or the
ground or
other external contact surfaces, bringing the friction ring 7 into contact
with the contact
surface, and rolling it towards one direction. If it is easy to roll forward
without too
much resistance, this means that the rolling direction is not the direction of
energy
storage for the friction motion energy storage mechanism 3. No rolling
resistance is
because the gear disk 43 of the direction-limiting mechanism 4 is not limited
by the
direction-limiting blocks 41, i.e., the gear disk 43 can rotate relatively to
the side cover
12, in other words, the gear disk 43, the energy storage spring 31 and the
spring case 32
can synchronously rotate as the disk bodies 11 roll, thus it is unable to
store energy in the
energy storage spring 31. Hence it can be judged that it is proper to roll in
the opposite
direction, i.e., to roll backward, in this case, the gear disk 43 is limited
by the
direction-limiting blocks 41 and thus is unable to rotate. Hence, the inside
end of the
energy storage spring 31 is stationary, while the outside end thereof rotates
as the disk
bodies 11 roll, thereupon the energy storage spring 31 starts to store energy.
It indicates
that energy storage for the energy storage spring 31 is full when it is unable
to further
roll backward. In this case, if it is continued to roll backward forcibly, the
circular ring
51 is subjected to too large torsional force and thus is deformed, so that
convex teeth 511
are disengaged from the internal gear ring 52 of the mounting disk 42. Thus,
the
mounting disk 42 and the gear disk 43 rotate as the disk bodies roll, thereby
effectively
protecting the energy storage spring 31 from damaging due to excessive energy
storage.
After energy storage is full, with a finger of the other hand entwined by the
rope, taking
the yo-yo ball away from the contact surface, so the friction resistance of
the friction
ring 7 is relieved, the energy storage spring 31 starts to restore toward the
opposite
direction to release energy, thereby driving the disk bodies 11 to rotate in
the opposite
direction. Similarly, when the gear disk 43 rotates in the opposite direction,
it is not
limited by the direction-limiting blocks 41, hence the gear disk 43 and the
disk bodies 11
rotate synchronously; now releasing the yo-yo ball, the yo-yo ball falls off
along the
rope, and finally rotates at high speed at the end of the rope, and further
various fancy
moves are conducted.
100271 Although the present invention is described by reference to
embodiments, the
description does not signify to limit the present invention. By reference to
the
description of the present invention, other variations of the embodiments
discloses are
expectable for those skilled in the art, and these variations shall fall
within the scope
limited by the claims.
