JPH11105773A - Auxiliary power device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain traveling energy of a bicycle easily by using a spiral spring. SOLUTION: An idler 3 and a power spring built-in wheel 4 are fitted to the fork 2 of a bicycle, and the idler 3 is formed so as to be pulled by a wire 8, rotate around a shaft 6, and transmit the rotation of the front wheel 1 to the power spring built-in wheel 4 by a contact with the front wheel 1 and the power spring built-in wheel 4. The power spring built-in wheel 4 is formed so that the power spring may be rolled with the rotation transmitted from the idler 3, and it may be pulled by a wire 13, rotated with a panel 5, and transmit the rotation out of the power spring rolled by a contact with the front wheel 1 to the front wheel 1. As a result, by storing the rotational energy of the front wheel 1 in the power spring once, and discharging the stored energy to assist the pedaling pressure of a rider, it is possible to relieve the labor of the rider at the time of starting, accelerating, or climbing a slope.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary power device for a vehicle, and more particularly, to an auxiliary power device using a spiral spring.

[0002]

2. Description of the Related Art In a bicycle driven and driven by human power, a front sprocket provided on a drive shaft of a pedal and a rear sprocket provided on a side surface of a rear wheel hub are interlocked with a chain, and the rear wheel is driven by pedal pressure. It rotates while turning, and is used by many people as a handy vehicle.

[0003]

Generally, when riding a bicycle, the most leg strength is required when starting, accelerating, or climbing a hill. In particular, when starting up with luggage loaded on a slope or a luggage carrier, a considerably large leg force is required. For this reason, there are many cases where sufficient acceleration cannot be obtained at the time of starting and the course of the vehicle fluctuates and stable driving cannot be performed, and when climbing a hill, it is necessary to get down from the bicycle and push up the bicycle.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an auxiliary power unit capable of easily obtaining running energy of a vehicle such as a bicycle using a spiral spring. Aim.

[0005]

SUMMARY OF THE INVENTION An auxiliary power unit for a vehicle according to the present invention comprises a first fork which is rotatable around a shaft on a fork of the vehicle.
A first wheel and a second wheel respectively mounted via a second connection;
And the first wheel moves together with the first connecting portion drawn by a first wire, and comes into contact with a vehicle wheel and the second wheel to form a wheel of the vehicle. Rotate the second
The second wheel has a built-in mainspring, and the mainspring is wound in accordance with the rotation transmitted from the first wheel. The second connecting portion is moved together with the pulled second connecting portion to contact the wheel of the car, and the rotation of the second wheel rotated by the relaxing force of the wound mainspring is transmitted to the wheel of the car. It is characterized by the following.

According to another feature of the present invention, the second connecting portion includes a ratchet that engages with a ratchet gear provided on the second wheel and configured to allow rotation only in one direction, and a third ratchet. And a clutch for disengaging the ratchet and the ratchet gear by moving the ratchet by pulling the wire.

[0007] In another aspect of the present invention,
Means for preventing overwinding of the mainspring is provided. For example, the means for preventing the mainspring from being overwound is the second
One or more ratchet teeth provided in parallel to the circumference of the second wheel, a ratchet provided on the outer periphery of the ratchet teeth and engaging with the ratchet teeth, and the ratchet teeth A bottom member that is provided on the inner periphery of the bottom member and determines a range in which the ratchet teeth rotate around an axis, the bottom member having a predetermined recess into which the ratchet teeth fall, and on the same circumference as the ratchet teeth. It is provided, and one end is rotatably supported by being supported,
The other end is a collapsible plate connected to the bottom member via the spring and a predetermined coupling band, and between the collapsible plate and the coupling band, wherein the collapsible plate is pivotally supported. A fixed shaft provided at a position at a fixed distance from the shaft.

[0008] In another aspect of the present invention,
The first lever and the brake lever are connected by pivotally supporting the vicinity of the tip of the first lever for pulling the first wire and the root portion of the brake lever by a shaft with a spring. And a locking structure for locking the first lever after the first lever has moved by a predetermined section, wherein the first predetermined section is the first fixed section.
And the brake lever move integrally, and after the first lever is locked, only the brake lever moves alone.

In another aspect of the present invention,
By supporting the vicinity of the tip of the second lever for pulling the second wire and the root portion of the third lever for pulling the third wire by a spring-loaded shaft, A second lever is connected to the third lever, and a locking structure is provided for locking the second lever after the second lever has moved by a predetermined section. The second lever and the third lever are configured to move integrally, and after the locking of the second lever, only the third lever is configured to move alone.

According to the present invention constructed as described above, the rotational force of the wheel of the car is transmitted to the second wheel via the first wheel, and the mainspring incorporated therein is wound up to accumulate energy. . Thereafter, by releasing the wound mainspring and transmitting the release energy at that time from the second wheel to the wheel of the car, it becomes possible to assist the force required for rotation for forward movement.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a partial configuration example of a front wheel of a bicycle. In FIG. 1, reference numeral 1 denotes a front wheel of a bicycle, where left rotation is forward and right rotation is reverse. In this embodiment, the fork 2 on which the front wheel 1 is suspended has two types of wheels. One is a play wheel 3 provided slightly inside the front wheel 1, and the other is a wheel 4 with a built-in mainspring (spiral spring) provided below the play wheel 3 via a panel 5.

The idle wheel 3 has a configuration as shown in FIG. 2 and is supported by a fork 2 by a rotating shaft 6. A first wire 8 is fixed to and connected to a stopper 7 provided on an arm 9 of the idle wheel 3, and the first wire 8 is connected to a lever (described later) provided on a handle (not shown). It is connected to the. Thus, by pulling the first wire 8 upward, the idle wheel 3 can be turned around the rotation shaft 6 in the direction of arrow A. The rotating shaft 6 is provided with a spring (not shown), and when the pulling of the first wire 8 is stopped, the idle wheel 3 returns to the home position shown in the figure.

The wheel 10 of the idle wheel 3 is provided with a non-rotating arm 9
, The wheel 10 can freely rotate both left and right around the arm 9. That is, by pulling the first wire 8 upward and moving the idle wheel 3 in the direction of arrow A as described above, the wheels 10 of the idle wheel 3
1, the wheel 10 of the idle wheel 3 is also rotated by the rotational force of the front wheel 1.

The built-in mainspring wheel 4 is integrated with the panel 5 by a non-rotating shaft bar (not shown). The built-in mainspring wheel 4 itself can be rotated both left and right around the shaft bar. It is designed to rotate freely. The built-in mainspring wheel 4 incorporates, in addition to the mainspring, means for preventing the wound mainspring from returning to its original state and means for preventing the mainspring from being overwound (both will be described later). .

A panel 5 integrated with the mainspring built-in wheel 4 and the shaft bar is supported by a fork 2 by a rotating shaft 12. A second wire 13 is connected to one end of the panel 5.
Is connected to a lever (described later) provided on a handle (not shown). Thereby, the second wire 13
By pulling upward, the panel 5 can be turned around the rotation shaft 12 in the direction of arrow B. The rotating shaft 12 is provided with a spring (not shown). When the pulling of the second wire 13 is stopped, the panel 5 returns to the fixed position where the stopper 14 is located.

The panel 5 is configured as shown in FIG. 3, and the rotary shaft 12 is mounted on the fork 2 through a shaft hole 17. In the space between the front plate 18 and the back plate 19 of the panel 5, the structure of the moving gear 21 and the built-in spring 4 as shown in FIG. 4 (excluding the small wheel 22 of the moving gear 21) Is inserted. That is, the front plate 18 of the panel 5 includes the small wheel 22 and the large wheel 23 of the moving gear 21.
, The back plate 19 is on the right outside of the mainspring built-in wheel 4.

FIGS. 5 and 6 are diagrams showing the structure of the moving gear 21 and the built-in mainspring wheel 4 shown in FIG. 4 in more detail. As shown in FIG.
Has a structure in which a small wheel 22 and a large wheel 23 are fixed by two fixed plates 24, and a spring 25 is provided near one or both of the fixed plates 24.

As shown in FIG. 5B, which shows the moving gear 21 of FIG. 5A viewed from the direction of the arrow, the tip of the large wheel 23 is locked by the force of a spring 27. A first ratchet 26 is provided so that the pawl is pressed against the ratchet gear 28 of the mainspring built-in wheel 4.

As shown in FIG. 6, the ratchet gear 28 has a large number of triangular teeth having relatively smooth curves on one side and straight edges on the other side. With this configuration, when the first ratchet 26 is between adjacent teeth, the first ratchet 26 can slide on the teeth in one direction, but can slide on the teeth in the opposite direction. Is such that the first ratchet 26 is locked by teeth and cannot slide.

Thus, when the first ratchet 26 and the ratchet gear 28 are engaged, the mainspring 30 is engaged.
The built-in mainspring wheel 4 can rotate in the direction in which the mainspring 30 is wound, and the mainspring built-in wheel 4 cannot rotate in the direction in which the wound mainspring 30 returns to its original position (the direction in which the mainspring 30 is released). Has become. That is, the first ratchet 26 and the ratchet gear 2
Reference numeral 8 functions as a means for allowing the mainspring 30 to be wound and preventing the wound mainspring 30 from returning to its original position.

The built-in mainspring wheel 4 shown in FIG.
Is a disk 29 with a ratchet gear 28 shown in FIG.
The configuration shown in 31 is sandwiched between a disk 39 having a spring (not shown) in a slot 38 provided along the circumferential direction. That is, the disk 29 is fixed to the outside of the ring 32, and the disk 39 is fixed to the outside of the ring 33. The shaft 34 is for integrating the mainspring built-in wheel 4 and the panel 5 described above.

Returning to FIG. 1, the description will be continued. As shown in FIG. 1, between the small wheel 22 of the moving gear 21 and the panel 5,
A clutch member 15 is provided, and a third wire 16 is connected to the clutch member 15. Further, the third wire 16 is connected to a lever (described later) provided on a handle (not shown). The relationship between the moving gear 21, the panel 5, and the clutch member 15 shown here is shown in more detail in FIG.

FIG. 7A shows a state where the third wire 16 is not pulled upward. In this state,
There is almost no gap between the small wheel 22 of the moving gear 21 and the front plate 18 of the panel 5, and the moving gear 21 has a large wheel 23
1 and the ratchet gear 28 of the mainspring built-in wheel 4 are in a position where they engage with each other.

On the other hand, FIG. 7B shows the third wire 1
6 shows a state where it is pulled upward. In this state, the moving gear 21 is moved in the direction of arrow C by the action of the clutch member 15, and a gap is formed between the small wheel 22 of the moving gear 21 and the front plate 18 of the panel 5. This allows
A first ratchet 26 in the large wheel 23 of the moving gear 21;
When the mainspring built-in wheel 4 is disengaged from the ratchet gear 28 and the wound mainspring 30 is released, the built-in mainspring wheel 4 rotates accordingly.

When the pulling of the third wire 16 is stopped, the moving gear 21 moves in the direction opposite to the arrow C due to the repulsive force of the spring 25 provided on the moving gear 21, and again as shown in FIG. Return to the state of). At this time, the clutch member 15
Is returned to the original state by being pushed by the small wheel 22 of the moving gear 21, but may be returned by an original force by providing a spring at the fulcrum of the clutch member 15.

Next, the operation will be described. In FIG. 1, when the first wire 8 is first pulled upward, the idle wheel 3 moves in the direction of the arrow A about the rotation shaft 6. Thereby, the wheel 10 of the idle wheel 3 contacts both the inside of the rim 11 of the front wheel 1 and the wheel 4 with the built-in spring. At this time, the second and third wires 13 and 16 are not pulled upward, and the mainspring built-in wheel 4 is not in contact with the front wheel 1.

When this operation is performed while the bicycle is moving forward, the left rotation of the front wheel 1 is transmitted to the idle wheel 3 so that the idle wheel 3 rotates left, and the idle rotation of the idle wheel 3 further proceeds. This is transmitted to the mainspring built-in wheel 4, and the mainspring built-in wheel 4 rotates clockwise (reverse rotation to the traveling direction). Thereby, the mainspring 30 in the mainspring built-in wheel 4 is caught.

After that, the towing of the first wire 8 is stopped (the idle wheel 3 returns to the original position) and the towing of the second wire 13 causes the panel 5 to move together with the mainspring built-in wheel 4 in the direction of arrow B. . Thereby, the mainspring built-in wheel 4 comes into contact with the inside of the rim 11 of the front wheel 1. Thereafter, when the third wire 16 is pulled, the moving gear 21 of FIG. 4 moves in a direction away from the mainspring built-in wheel 4 by the action of the clutch member 15, and the engagement between the first ratchet 26 and the ratchet gear 28 is released. Wind-up mainspring 3 unraveled and involved
0 returns.

As a result, the mainspring built-in wheel 4 rotates in the direction in which the mainspring 30 is released by the relaxing force of the mainspring 30 (left rotation in FIG. 1). At this time, since the built-in mainspring wheel 4 is in contact with the front wheel 1, the left rotation of the built-in mainspring wheel 4 is transmitted to the front wheel 1 as auxiliary power for the bicycle to move forward. At this time, the mainspring built-in wheel 4 and the idle wheel 3 are not in contact with each other, but the mainspring built-in wheel 4 may be in contact with the idle wheel 3 if the idle wheel 3 and the front wheel 1 are not in contact with each other. .

As described above, according to the auxiliary power device for a bicycle according to the present embodiment, the front wheel 1 when the bicycle is moving forward is provided.
Is stored in the mainspring 30 and the stored energy is released at an arbitrary time, thereby assisting the driver's pedal pressure. This allows
When starting, accelerating, or climbing a hill, the driver's labor can be reduced by half to facilitate traveling.

FIG. 8 shows each of the first wires 8, 1 described above.
It is a figure which shows the structure of the lever of the handle to which 3 and 16 are connected. FIGS. 8 (a) and 8 (b) show an idler pulling lever 41 for pulling the first wire 8 to bring the idler 3 into contact with the front wheel 1 and the mainspring built-in wheel 4.
And a brake lever 42 for operating a brake (not shown) by pulling the fourth wire 40.

As shown in FIG. 8B, the idle wheel pulling lever 41 and the brake lever 42 are connected via a shaft 43, and the brake lever 42 is rotatable around the position of the shaft 43 as a fulcrum. What is going on. Further, the idler traction lever 41 and the brake lever 42 are connected by a spring 49 as shown in FIG.
Is limited.

With this configuration, when the idle wheel pulling lever 41 is tilted downward in the drawing, the brake lever 42 moves together with the idle wheel pulling lever 41. At this time, the first wire 8 for the idle wheel 3 is connected. Only towed, 4th for brake
Is not pulled (the fourth wire 40 only moves down). Therefore, the spring 30 can be rolled up without braking the bicycle by braking, and energy can be stored.

In order to apply a brake, it is necessary to tilt only the brake lever 42 downward with the position of the shaft 43 as a fulcrum. If the spring 49 is weakened to some extent, it is possible to tilt only the brake lever 42 downward without moving the idle vehicle traction lever 41, but in this embodiment, the spring 49
Is designed to be strong so that when the brake lever 42 is operated, the idler traction lever 41 also falls down together. Thus, the spring 30 is always involved when braking with the brake, so that energy for auxiliary power can be stored.

Further, in the present embodiment, the root portion 44 of the idle wheel pulling lever 41 is angled so that only the brake lever 42 can be tilted downward with the position of the shaft 43 as a fulcrum. And That is, when the idle wheel pulling lever 41 is tilted downward together with the brake lever 42, the root portion 44 hits the frame of the handle (not shown), and the idle wheel pulling lever 41 is stopped by the frame of the handle. Therefore, if the brake lever 42 is further operated from this state, only the brake lever 42 falls downward with the shaft 43 as a fulcrum, and the fourth wire 40 for braking is pulled.

FIG. 8C shows a panel pulling lever 45 for pulling the second wire 13 to contact the mainspring built-in wheel 4 with the front wheel 1 and pulling the third wire 16. 2 shows a configuration with a release lever 46 for operating the clutch member 15 to release the wound mainspring 30. As shown in FIG.
The panel traction lever 45 and the release lever 46 are also connected via a shaft 47, similarly to the idle vehicle traction lever 41 and the brake lever 42, and are connected by a spring (not shown). Also, the panel pulling lever 4
The root portion 48 of 5 is also configured to be angular.

With this configuration, when the panel pulling lever 45 is tilted downward in the figure, the panel pulling lever 45 and the release lever 46 move together, and only the second wire 13 is pulled, causing the built-in mainspring wheel 4 to move forward. It contacts the rim 11 of the wheel 1. Then, the panel pulling lever 45 is connected to the base portion 4 thereof.
8 strikes against the handle frame (not shown). Thereafter, when the release lever 46 is operated, only the release lever 46 falls down with the shaft 47 as a fulcrum, whereby the third wire 16 is pulled.

When the third wire 16 is pulled, the moving gear 21 is brought into a neutral state by the action of the clutch member 15, and the mainspring 30 wound up to that point is released. As a result, the built-in mainspring wheel 4 is rotated by the relaxing force of the mainspring 30, and the rotation of the built-in mainspring wheel 4 is transmitted to the front wheels 1 as auxiliary power for the bicycle to move forward.

In order to reliably transmit the energy stored in the mainspring 30 to the front wheels 1, the mainspring 30 is required.
Is released, the built-in mainspring wheel 4 and the front wheel 1 must necessarily be in contact with each other. Therefore, if only the release lever 46 is operated without operating the panel pulling lever 45, the rotation energy is not transmitted to the front wheels 1 because only the mainspring built-in wheels 4 idle.

In order to prevent such inconvenience, in this embodiment, the strength of a spring (not shown) connecting the panel pulling lever 45 and the release lever 46 is also increased. Therefore, even when the release lever 46 is operated alone, the panel pulling lever 45 falls down together.
Thus, even if the driver accidentally operates the release lever 46 before the panel pulling lever 45, the wheel 4 with the built-in mainspring can be brought into contact with the front wheel 1 first, and the wheel 4 with the built-in mainspring can be idled. It can be reliably prevented.

As described above, in this embodiment, the kinetic energy of the front wheel 1 can be stored by operating the idle wheel pulling lever 41 at any time to wind up the mainspring 30. In addition, energy can always be stored in the mainspring 30 when the brake lever 42 is operated, while ensuring the safety of traveling during braking by braking and avoiding danger. Further, the operation of the panel pulling lever 45 and the release lever 46 can be performed at any time, and auxiliary power for forward movement can be obtained at any time.

The lever shown in FIGS. 8A and 8C can be provided at an arbitrary position on a handle (not shown). However, in order to ensure safety, it is preferable that the brake lever 42 is installed in a portion that is easy to operate. For example, the lever shown in FIG. 8A is provided below the right grip of the steering wheel (or on the traveling direction side).
The lever shown in (c) is preferably provided above the right grip of the steering wheel (or on the side opposite to the traveling direction). In addition,
A brake lever for the rear wheel is provided on the left grip of the steering wheel.

Next, the means for preventing the mainspring 30 from being excessively wound will be described. As shown in FIG. 6, two rings 32 and 33 are fixed by a plurality of (six in the case of the present embodiment) shafts 35 inside the mainspring built-in wheel 4, and between the rings 32 and 33. Plurality (5 in this embodiment)
) Ratchet teeth 36 and one collapsible plate 37 are provided along the circumferential direction. The ratchet teeth 36 and the collapsible plate 37 are supported by the shaft 35 described above, and can rotate only in one direction.

One end of the mainspring 30 is connected to the retractable plate 37, and the other end of the mainspring 30 is connected to a non-rotating shaft 34. When the mainspring 30 is not wound, the collapsible plate 37 is lying along the circumferential direction as shown in FIG. On the other hand, when the mainspring 30 is wound close to the limit, the tip of the mainspring 30 is directed substantially toward the center of the built-in mainspring wheel 4. The built-in wheel 4 rotates in a substantially central direction and falls down.

A ring member 50 as shown in FIG. 9A is covered on the outer periphery of the ring pair member 31 provided with the ratchet teeth 36 and the retractable plate 37. On the inner peripheral surface of the ring member 50, the same number of second ratchets 51 as the ratchet teeth 36 are provided. When the ratchet teeth 36 and the second ratchet 51 engage with each other, the ring member 50 and the ring pair member 31 are integrally rotatable. FIG. 9 (c)
FIG. 3 shows the configuration of one second ratchet 51 as a representative.

For example, when the first wire 8 is pulled, the wheel 10 of the idle wheel 3 is turned into the ring member 50 of the wheel 4 with the built-in spring.
When the wheel 10 comes into contact with the outer peripheral surface of the
0 and the ring member 50 rotates. At this time,
As the ring pair member 31 rotates integrally with the ring member 50, the mainspring 30 connected to the collapsible plate 37 is drawn in. In this manner, the power of the front wheels 1 is transmitted to the mainspring built-in wheels 4 via the idle wheel 3, and kinetic energy is stored in the mainspring 30 inside the mainsprings.

Further, the second wire 13 is pulled and the ring member 50 of the mainspring built-in wheel 4 comes into contact with the front wheel 1,
When the third wire 16 is further pulled and the wound mainspring 30 is released, the ring pair member 31 is rotated by the relaxing force of the mainspring 30. At this time, when the ring member 50 rotates integrally with the ring pair member 31, the rotation of the ring member 50 is transmitted to the front wheel 1 and serves as auxiliary power for the bicycle to move forward.

In the case where an attempt is made to obtain acceleration by using the relaxing force of the mainspring 30 during running of the bicycle, the third
Before the second wire 13 is pulled, the ring member 50 of the mainspring built-in wheel 4 is pulled before the second wire 13 is pulled.
When the ratchet teeth 36 and the second ratchet 51 do not engage with each other at the stage where the front wheel 1 is contacted, the left rotation of the front wheel 1 is transmitted to the ring member 50 of the mainspring built-in wheel 4. 31 does not rotate.

That is, like the ratchet gear 28, the second ratchet 51 also has a triangular claw having a relatively smooth curve on one side and straight edges on the other side. When the left rotation of the wheel 1 is transmitted to the ring member 50 of the mainspring built-in wheel 4 and rotates left, the second ratchet 51 slides on the ratchet teeth 36, and the ring member 50 idles. Thus, when the ring member 50 of the mainspring built-in wheel 4 comes into contact with the front wheel 1 before the mainspring 30 is released, braking can be prevented from being applied.

Further, on the inner periphery of the ring pair member 31 provided with the ratchet teeth 36 and the folding plate 37, FIG.
A bottom member 52 as shown in FIG. The bottom member 52 determines a range in which the ratchet teeth 36 can be rotated by the shaft 35, and has a circumferential portion 53 having a shape along a normal circumference and a shape depressed with respect to the circumference. A plurality of concave portions 54 are provided alternately. Recess 54
Is the same as the number of ratchet teeth 36. The ratchet teeth 36 slide on the bottom member 52.

A fixed gap 55 is provided in a part of the bottom member 52.
Is provided, and the collapsible plate 37 of the ring pair member 31 is
It is provided at a position corresponding to the gap 55. Bottom member 52
In the vicinity of the gap 55, a slot 56 is provided, and a connecting band (not shown) is wound therearound. Note that the connection is wound here, but the connection method is not limited to this. Further, on the disk portion of the bottom member 52, the slot 38 of FIG.
A slot 57 is provided at a position corresponding to, and one end of the slot 38 and one end of the slot 57 are connected by a spring (not shown).

FIG. 10 shows the bottom member 52 and the mainspring 30.
FIG. 7 is a diagram showing a connection state between the foldable plate 37 and the foldable plate 37. As described above, one end of the connection band 58 is wound around the slot 56 of the bottom member 52, and the other end of the connection band 58 is connected to one end of the collapsible plate 37 (the bottom member 52 having the slot 56). Farther from one end)
Is wound around the slot provided in the main body. The spring 30 is also wound around the one end of the collapsible plate 37 (the side to which the other end of the connection band 58 is connected) as described above.

The connecting band 58 is made of a strong material which is flexible in the vertical direction and is not easily cut by the tension in the longitudinal direction. Further, in the present embodiment, a fixed distance between the collapsible plate 37 and the connecting band 58 and a shaft 35 (provided at the other end of the collapsible plate 37) serving as an axis when the collapsible plate 37 rotates. , A fixed shaft 59 is provided.

With the above structure, when the mainspring 30 is wound up to the limit, the collapsible plate 37 is pulled by the mainspring 30 in the direction of the arrow D about the shaft 35 (substantially the center of the mainspring wheel 4). Direction), whereby the connecting band 58 is pulled by the collapsible plate 37. At this time, since the fixed shaft 59 is provided between the collapsible plate 37 and the connecting band 58, the collapsible plate 37 falls down in the drawing.
Will be pulled along the circumferential direction. Thereby, the bottom member 52 to which the connecting band 58 is connected also moves in the direction of the arrow E along the circumferential direction.

When the bottom member 52 moves in the direction of the arrow E (circumferential direction) in this way, as shown in FIG. 11, the ratchet teeth 36 normally located on the circumferential portion 53 are It slides down to the part and sinks down. As a result, the ratchet teeth 36 do not engage with the locking claws of the second ratchet 51, and the ring member 50 and the ring pair member 31 cannot rotate integrally. In this manner, overwinding of the mainspring 30 can be reliably prevented. When the mainspring 30 is loosened and the collapsible plate 37 returns to its original position, the bottom member 52 moves in the direction opposite to the arrow E by the force of the spring provided in the slots 38 and 57, and returns to the original position. Return to the state.

In the above embodiment, the idle wheel 3 and the built-in mainspring wheel 4 are provided on the front wheel of the bicycle.
It may be provided on the rear wheel portion. Also, it may be provided on both the front wheel portion and the rear wheel portion. When both are provided, more kinetic energy can be stored and released in the mainspring, and larger auxiliary power can be obtained.

The number of the ratchet teeth 36 and the second ratchets 51 is not limited to five, and may be any number as long as at least one is provided. Furthermore, the mainspring 30 and the bottom member 5
2 is connected via the collapsible plate 37 and the connecting band 58, but the mainspring 30 and the bottom member 52 may be directly connected if the mainspring 30 has a certain degree of flexibility in the vertical direction. However, even in this case, the fixed shaft 59 is an essential component.

In the above embodiment, the case where the auxiliary power unit of the present invention is applied to a bicycle has been described as an example, but the present invention is not limited to this. For example,
The present invention can be applied to two-wheeled vehicles other than bicycles, three-wheeled vehicles, and four-wheeled vehicles. In this case, where the idle wheel 3 and the built-in mainspring wheel 4 are provided is optional.

In addition, the configurations, shapes, and the like of the respective parts shown in the above-described embodiments are merely examples of embodiments for carrying out the present invention, and the technical scope of the present invention is thereby reduced. It should not be interpreted restrictively. The present invention can be embodied in various forms without departing from the spirit or main features thereof. Therefore, the above embodiments are merely examples in all respects, and should not be construed as limiting.

[0060]

As described above, according to the present invention, the first wheel and the second wheel respectively attached to the fork of the car via the first and second connecting portions rotatable about the shaft are provided. The first wheel moves together with the first connecting portion drawn by the first wire, and contacts the vehicle wheel and the second wheel to rotate the vehicle wheel to the second wheel. The second wheel incorporates a mainspring so that the mainspring is caught in accordance with the rotation transmitted from the first wheel, and a second connecting portion pulled by a second wire. The rotation of the second wheel, which is rotated by the relaxing force of the spiral wound on the wheel of the car in contact with the wheel of the car, is transmitted to the wheel of the car, so that the rotational energy of the wheel of the car is accumulated in the spring. Release this stored energy to assist the driver's tread pressure Can, labor of a driver at or acceleration or uphill at the start can be reduced. And such auxiliary power can be easily obtained at any time when the driver desires.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of an auxiliary power device for a vehicle according to the present invention, showing a partial configuration example of a front wheel of a bicycle.

FIG. 2 is a diagram illustrating a configuration example of an idle vehicle.

FIG. 3 is a diagram illustrating a configuration example of a panel.

FIG. 4 is a diagram showing an example of a partial configuration of a moving gear and a built-in mainspring wheel.

FIG. 5 is a diagram illustrating a configuration example of a moving gear.

FIG. 6 is a diagram showing an example of a partial configuration of a built-in mainspring wheel.

FIG. 7 is a diagram showing a relationship between a clutch member, a moving gear, and a wheel with a built-in mainspring.

FIG. 8 is a diagram illustrating a configuration example of a lever provided on a handle of a bicycle.

FIG. 9 is a view for explaining a means for preventing excessive winding of the mainspring, and is a view showing a configuration example provided on a wheel with a built-in mainspring.

FIG. 10 is a diagram for explaining a means for preventing excessive winding of the mainspring, and is a diagram showing in detail a configuration example provided on a wheel with a built-in mainspring.

FIG. 11 is a diagram for explaining the operation of the overwinding prevention means of the mainspring.

[Description of Signs] 1 front wheel 2 fork 3 idle wheel (first wheel) 4 built-in mainspring wheel (second wheel) 5 panel 8 first wire 13 second wire 15 clutch member 16 third wire 21 Moving gear 26 First ratchet 28 Ratchet gear 30 Mainspring 36 Ratchet teeth 37 Collapsible plate 51 Second ratchet 52 Bottom member 54 Depression (recess) 58 Connecting band 59 Fixed shaft

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[Procedure amendment]

[Submission date] October 7, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] In another aspect of the present invention,
The vicinity of the tip of the first lever for pulling the first wire and the base of the brake lever are supported by a shaft and connected by a spring to connect the first lever and the brake lever. And the first
And a locking structure for locking the first lever after the first lever has moved by a predetermined section, and the first predetermined section is configured such that the first lever and the brake lever move integrally. In addition, after the first lever is locked, only the brake lever moves alone.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

In another aspect of the present invention,
By pivotally supporting the vicinity of the tip of the second lever for pulling the second wire and the base of the third lever for pulling the third wire by a shaft, and connecting them by a spring. The second lever and the third lever
And a locking structure for locking the second lever after the second lever has moved by a certain section, and the first certain section has the second lever and the third lever in the first certain section. And the third lever can be moved independently after the second lever is locked.

Claims (6)

[Claims] 1. A vehicle comprising: a first wheel and a second wheel attached to a fork of a vehicle via first and second connecting portions rotatable about a shaft, wherein the first wheel is Moving with the first connecting portion drawn by the first wire, and coming into contact with the vehicle wheel and the second wheel to transmit the rotation of the vehicle wheel to the second wheel as reverse rotation. The second wheel has a built-in mainspring, and is configured so that the mainspring is caught in accordance with the rotation transmitted from the first wheel, and the second wheel pulled by a second wire. The vehicle according to claim 1, wherein the second wheel, which moves together with the connecting portion, contacts the wheel of the vehicle, and transmits the rotation of the second wheel, which is rotated by the relaxing force of the wound mainspring, to the wheel of the vehicle. Auxiliary power unit. A second connecting portion configured to move the ratchet by pulling a third wire, the ratchet being engaged with a ratchet gear provided on the second wheel and configured to allow rotation only in one direction; And a clutch for disengaging the ratchet and the ratchet gear.
An auxiliary power unit for a vehicle according to claim 1. 3. An auxiliary power unit for a vehicle according to claim 1, further comprising means for preventing the mainspring from being overwound. 4. A means for preventing overwinding of the mainspring is built in the second wheel, and one or more ratchet teeth provided in parallel with the circumference of the second wheel; A ratchet provided on an outer periphery and engaged with the ratchet teeth; and a bottom member provided on an inner periphery of the ratchet teeth and determining a range in which the ratchet teeth rotate around an axis, wherein the ratchet teeth fall into a predetermined position. A bottom member having an indentation, and provided on the same circumference as the ratchet teeth, one end of which is rotatably supported and rotatable, and the other end of which is connected to the mainspring through a predetermined connection band. A collapsible plate connected to a material, and a fixed shaft provided between the collapsible plate and the connection band at a fixed distance from an axis on which the collapsible plate is pivotally supported. Claim 3 characterized by the following: The placing of the car of the auxiliary power unit. 5. A first wire for pulling the first wire.
The first lever and the brake lever are connected by pivotally supporting the vicinity of the tip of the lever and the root portion of the brake lever with a shaft with a spring, and the first lever has moved by a fixed section. Later the first
The first fixed section is configured such that the first lever and the brake lever move integrally with each other, and the first fixed section is fixed to the first fixed section.
The auxiliary power unit for a vehicle according to any one of claims 1 to 4, wherein only the brake lever moves independently after locking of the lever. 6. A second wire for pulling the second wire.
The second lever and the third lever are connected by pivotally supporting the vicinity of the tip of the lever and the root portion of the third lever for pulling the third wire by a shaft with a spring. And after the second lever has moved for a certain section,
The first fixed section is configured such that the second lever and the third lever move integrally, and the first fixed section is locked with the second lever. The auxiliary power unit for a vehicle according to any one of claims 2 to 5, wherein only the third lever moves independently thereafter.