JP3030997U - Auxiliary power transmission device for human powered vehicle - Google Patents

Abstract

(57) Abstract: In a human-powered vehicle, auxiliary power is transmitted by contacting a tire with a simple operation. A support plate (1) having a bearing portion (2) at a tip portion (1a)
Face the tire T surface with the base 1b and the body B of the human powered vehicle
So that it can be fixed to a part of
In addition, the swing plate 3 is pivotally supported so as to be free to swing in the rotation direction of the tire T toward the tire T surface of the human-powered vehicle. A bearing portion 4 is provided at the tip end 3a of the contact drive roller 5, and the distance L from the pivotal support portion 3b of the swing plate 3 to the farthest surface of the contact drive roller 5 is the swing plate. Pivotal branch 3
b is greater than the distance H from the shortest surface to the tire T, and the contact drive roller 5 is located in front of the distance H from the shortest surface to the tire T in the rotational direction of the tire T. It is attached so that it is slightly separated from the T-face so as to be maintained by the weight balance or the biasing force of the spring.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a device for transmitting auxiliary power by a tire contact drive system used in a manually driven vehicle such as a bicycle or a wheelchair.

[0002]

[Prior art]

 In the past, bicycles had too much human effort on steep and long slopes, so they had to go down and push once to get over. Also, wheelchairs had a hard time avoiding such slopes and making detours to reach their destinations. In addition, it took a lot of physical strength to move for a long time, and the physical burden was not easy. Therefore, in order to supplement human labor, an auxiliary power unit is provided that is fixed to the body of a bicycle or wheelchair and drives the wheel shafts with a motor or drives the drive roller by directly contacting the tires. Has been done.

[0003] In the case of a drive roller that is driven by directly contacting the tire, the tire itself has a function as a speed reducer because the tire diameter is considerably larger than that of the drive roller. The contact resistance force changes significantly due to the difference in tire air pressure. If the contact resistance force decreases, slippage may occur at the contact surface. In order to prevent the contact resistance from lowering there, a pair of driving rollers sandwich the transmission from both sides of the tire and the driving is performed on the outer peripheral surface of the tire in parallel with the wheel shaft. A method is proposed in which a roller shaft is provided, and the driving roller shaft is urged in the centripetal direction to be pressed by a lever operation by a wire to make contact (Japanese Patent Laid-Open No. 63-15950). Has been done.

[0004] Each of these has a drive switch and a switching handle (lever) for transmission drive when switching from manual drive to electric drive, and these must be operated separately. The operation performed in stages was a considerable burden for the physically handicapped. Therefore, if the tires are transmitted to the motor in advance so that the switch can be operated once by turning the switch on and off, the transmission path to the motor will serve as a rotating resistor when the auxiliary power is not used. However, there is a problem in that much work is required to drive the human power.

Further, if the rotational driving direction is one direction, it is sufficient for a bicycle, but since a chair moves forward and backward, bidirectional front-back correspondence is necessary. For this reason, two methods have been used so far, one in which the opposite direction is installed separately, and the other in which the drive roller is forcibly pressed against the tire and the motor is used in the reverse direction. It was In this case, the drive switch and the switching handle for transmission drive must be operated separately, and the switching handle must be operated in the forward and reverse directions. Was very difficult.

Further, a lever type mechanical brake has been generally used so far for braking operation on a slope. This also impaired the ability of a physically handicapped person to easily adjust the amount of force applied to the lever. For this reason, it was difficult to avoid the dangerous slopes and take a detour to reach the destination for safety.

[0007]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and by effectively utilizing the function of the tire itself as a speed reducer, it is possible to secure a sufficient driving force even for a small motor and to reduce the size and weight. , Normally, the auxiliary drive unit including the transmission unit is separated from the human power drive system to drive lightly, and when starting the use of the auxiliary power, it is possible to transmit the drive with one touch, and when the auxiliary power is stopped, The present invention provides a transmission device that can be separated from a human-powered drive system with a single touch, and that can be effectively used as a braking device, and that is capable of bidirectional forward and reverse travel with a single device.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is used in a human-powered vehicle, in which a support plate 1 having a bearing portion 2 at a tip portion 1a faces a tire T surface of the human-powered vehicle with a base portion 1b, and a body B of the human-powered vehicle. And a swing plate 3 is pivotally supported on a bearing portion 2 of a support plate 1 of the support plate 1 so that the swing plate 3 can swing freely in the rotational direction of the tire T toward the surface of the tire T. The bearing portion 4 is provided on the portion 3a to move the contact drive roller 5 from the pivotal portion 3b of the swing plate 3 to the farthest surface of the contact drive roller 5 so that the distance L of the swing plate 3 is increased. The distance H from the support 3b to the shortest surface to the tire T is greater than the distance H from the contact drive roller 5 to the shortest surface to the tire T in the rotation direction of the tire T. Position, a weight balance or spring bias to a position slightly away from the tire T surface Be mounted is maintained by.

Then, a drive motor 6 is fixed to the swing plate 3, and the drive motor 6 drives the contact drive roller 5 to rotate directly or through the transmission mechanism D. It is an auxiliary power transmission device that is designed to operate.

The transmission mechanism D is decelerated and transmitted from the drive motor 6 to the contact drive roller 5 via large and small transmission wheels 7 and 8 mounted on the swing plate 3. I did so.

Further, a belt 9 is used as the transmission means of the transmission mechanism D.

Furthermore, the two contact drive rollers 5a and 5b are distributed to the swing plate 3 on both sides of the distance H from the pivotal support portion 3b of the swing plate 3 to the shortest surface from the tire T. It is configured by mounting.

Further, the contact drive roller 5 is brought into contact with the tire T surface by the forced movement of the lever 3 by operating the lever 10, and the brake function is provided by the regenerative braking of the motor. It has a.

[0014]

[Embodiment of device]

 1 and 2 showing a device of a bicycle as an example, a method of transmitting auxiliary power will be described below. In order to move the bicycle to the right side of FIG. As shown, when the drive motor 6 which is the auxiliary power is rotated counterclockwise, the contact drive roller 5 also rotates counterclockwise, and the swing plate 3 is rotated about its pivot 3b. In comparison, the starting rotation reaction occurs in the clockwise direction (the direction of the white arrow), which is the opposite direction to the rotation direction.

The present invention utilizes the starting rotation reaction of the drive motor 6 to bring the auxiliary drive transmission surface F apart (in the state of FIG. 1) into contact with the tire T surface of the wheelchair (see FIG. 2). State), and after contacting the tire T surface, the tire T surface is rotated in the clockwise direction in the counterclockwise direction (contact drive roller surface of FIG. 2). Black coating The drive transmission surface F is attached to the tire surface T and the drive transmission surface by the repulsive force in the clockwise direction (in the direction of the white arrow in FIG. 2) generated from the power using the continuous rotation drive force (in the direction of the arrow). Rotational power from the drive motor 6 to the tire T of the bicycle while being held in a pressure contact state so as to be pulled deeper by being sandwiched between the fixed portion (the pivotal support portion 3b of the swing plate 3). To be able to communicate.

To explain this device more specifically, the one shown in FIG. 1 is for moving the bicycle forward in one direction (right side in FIG. 1), and is a support plate having a bearing portion 2 at the tip 1a. The base 1 faces the tire T surface at the base 1b and is fixed to a part of the bicycle body B with bolts 12. Then, a swing plate 3 is pivotally supported on the bearing portion 2 of the support plate 1 so as to be free to swing in the rotational direction of the tire T toward the tire T surface of the bicycle. In FIG. 1, the support plate 1 is shown with the body B arranged on the left side, but if the suitable mounting and fixing position for the bicycle is the opposite, the supporting plate 1 is placed on the opposite right side of the body B. Will be placed.

A bearing portion 4 is provided on the tip portion 3a of the swing plate 3, and a contact drive roller 5 is pivotally supported on the bearing portion 4. Regarding the mounting position relationship between the pivotal support portion 3b of the swing plate 3 of the contact drive roller 5 and the tire T, the farthest surface of the contact drive roller 5 from the pivot support portion 3b of the swing plate 3 is described. The distance L is larger than the distance H from the pivotal support portion 3b of the swing plate 3 to the shortest surface from the tire T, and the contact drive roller 5 is moved in the tire T rotation direction. The distance from the T surface of the tire is set to be slightly more forward than the distance H to the shortest surface to T. The position of the swing plate 3 on the support plate 1 is maintained in such a state by a weight balance or a biasing force of a spring.

Then, a drive motor 6 is fixed to the swing plate 3 so that the swing motion can be performed integrally with the swing plate 3, and the contact drive roller 6 is used by the drive motor 6. -Rotate it directly by means of the laser 5 or through the transmission mechanism D. The transmission mechanism D can also transmit the drive by a gear or a chain, but in the present embodiment, as shown in FIGS. 1 and 2 above, the pivot of the swing plate 3 with respect to the support plate 1 is pivoted. A large-diameter transmission wheel 8 is coaxially mounted on the support portion 3b, and a small-diameter transmission roller 13 is coaxially mounted on the large-diameter transmission wheel 8 in a fixed state. The roller 13 and the contact drive roller 5 are connected by a belt 9a. Then, the large diameter transmission wheel 8 is connected to the small diameter transmission wheel 7 fixed to the rotary shaft of the drive motor 6 by a belt 9b. In this way, the rotational drive of the drive motor 6 is decelerated and rotationally adjusted in order from the transmission wheel 7 to the belt 9b, the transmission wheel 8, the transmission roller 13, the belt 9a, and the contact drive roller 5. And communicate.

The position at which the swing plate 3 is pivotally supported with respect to the bearing portion 2 of the support plate 1 may be coaxial with the pivot portion of the large diameter transmission wheel 8 as described above. As shown in, a pivotal support portion 3c may be provided in another position, and the large diameter transmission wheel 8 may be pivotally supported on the pivotal support portion 3c. Further, by operating the swing plate 3 to forcibly bring the contact drive roller 5 into contact with the tire T surface, when the contact drive roller 5 is rotated, the drive motor is driven in the opposite direction to the drive transmission. It can be used as a strong brake by regenerative braking caused by rotation of the shaft of the drive motor 6 which is transmitted to the motor 6 and stopped.

In the case of this embodiment, as shown in FIG. 7, the wire 11 is fixed to the swing plate 3, and the wire 11 is pushed and pulled by the operation of the handle lever 10 to bring the contact drive roller. It is possible to forcibly bring -5 into contact with the surface of the tire T for breaking. This brake acts strongly as the contact drive roller 5 is pressed against the tire T when the vehicle travels in the direction opposite to the traveling direction (when the vehicle backs up), and is strongly and deeply drawn in, so that the brake is strong. The brake works to improve safety. In addition, the breaking operation can be performed separately by moving the whole supporting plate 1 up and down (not shown).

Although the bicycle may be configured to transmit in one direction, a wheelchair needs to support both front and rear directions. As shown in FIGS. 3, 4 and 8, a transmission device capable of supporting the front-rear bidirectional movement is one that advances the wheelchair in the front-rear bidirectional direction, and a support plate having a bearing portion 2 at the tip 1a. The wheelchairs 1, 1 are faced to the tire T surface by their bases 1b, 1b, and the wheelchair is fixed to a part of the body B with bolts 12.

In FIG. 3, FIG. 4 and FIG. 8, the support plate 1 is shown with the body B arranged on the left side, but when the suitable mounting and fixing position for the wheelchair is opposite to this. Is placed on the right side of the opposite body B. Then, the swing plates 3, 3 are pivotally supported on the bearing portions 2, 2 of the support plates 1, 1 so as to be swingable in the rotational direction of the tire T toward the tire T surface of the wheelchair.

At the front end portions 3a, 3a of the swing plates 3, 3 facing the tire T, the front and rear sides of the distance H from the pivotal support portions 3b, 3b of the swing plates 3, 3 to the shortest surface to the tire T are located. Two bearing parts 4a, 4b, 4a, 4b are provided at intervals so as to be distributed, and the bearing parts 4a, 4b, 4a, 4b are pivotally supported by sandwiching the contact drive rollers 5a, 5b, respectively. .

As for the mounting positional relationship between the tire T and the pivotal support portion 3b of the swing plate 3 on which the contact drive rollers 5a and 5b are mounted, the pivotal support portion of the swing plate 3 is shown in FIG. The distances L1 and L2 from 3b to the farthest surfaces of the respective contact drive rollers 5a and 5b are larger than the distance H from the pivotal support 3b of the swing plate 3 to the shortest surface from the tire T, and The contact drive rollers 5a and 5b are set to be in a state slightly separated from the tire T surface at a position in front of the distance H to the shortest surface to the tire T in the rotational direction of the tire T. The position of the swing plate 3 on the support plate 1 is maintained in such a state by the weight balance or the urging force of the spring.

The transmission mechanism D can also transmit drive by a gear or a chain, but in the present embodiment, as shown in FIGS. 3 and 4, the swing plate 3 with respect to the support plate 1 is used. The transmission wheel 8 having a large diameter is coaxially attached to the pivotal support portion 3b, and the transmission roller 13 having a small diameter is coaxially attached to the transmission wheel 8 having a large diameter in a fixed state. -The roller 13 and the contact drive rollers 5a and 5b are connected by a belt 9a. Then, the large diameter transmission wheel 8 is connected to the small diameter transmission wheel 7 fixed to the rotary shaft of the drive motor 6 by a belt 9b. In this way, the rotational drive of the drive motor 6 is decelerated in order from the transmission wheel 7 to the belt 9b, the transmission wheel 8, the transmission roller 13, the belt 9a, and the contact drive rollers 5a and 5b. Adjust the rotation and transmit.

As shown in FIG. 5, the weight balance for keeping the contact drive rollers 5a and 5b pivotally supported by the swing plate 3 away from the tire T surface is as shown in FIG. If the drive motor 6 is placed directly above the vehicle, it can be balanced away from the tire T surface.

However, as shown in FIG. 6, when the contact drive rollers 5a and 5b are arranged obliquely above and above the tire T, the drive motor 6 is arranged obliquely above and above. If so, the load of the drive motor 6 lowers the contact drive roller 5b on the right side of the drawing as shown in FIG. 6, and both contact drive rollers 5a, 5a from the tire T surface, 5b is well balanced and well balanced. Further, instead of the balance due to the load of the drive motor 6, the contact drive roller from the tire T surface is biased by a spring (not shown) between the support plate 1 and the swing plate 3. It is also possible to forcibly adjust and hold the 5a and 5b apart.

Also in this front-rear bidirectional correspondence type, the position where the swinging plate 3 swings and pivots with respect to the bearing portion 2 of the support plate 1 is the same as that of the large diameter transmission wheel 8 as described above. It may be coaxial or may be pivotally supported on another axis. Further, as in the case of the one-way type for bicycles described above, the wire 11 is fixed to the swing plate 3 and the wire 11 is pushed and pulled by the operation of the handle lever 10 so that the contact drive roller 5 is pulled out. The tire T surface can be forcibly brought into contact with the tire T surface for braking. In this case, if the whole including the support plate 1 is moved up and down, a brake for regenerative braking in both the front and rear directions works and the safety on a slope or the like increases.

Further, in the above-mentioned bidirectional front-back correspondence type, the contact drive rollers 5a and 5b are pivotally supported in a state of being sandwiched between the swing plates 3 and 3. -5a and 5b can be projected outside the swing plates 3 and 3 as shown in FIG. The contact drive rollers 5a and 5b can be driven by rotating the belt 9 of the sprocket fixed to the base thereof.

In this case, since the drive motor 6 is housed in the swing plates 3 and 3, compactness is achieved. Then, it becomes possible to directly rotate the drive roller 5b. Further, as shown in FIG. 10, the rotational drive of the drive motor 6 is transferred from the transmission wheel 7 to the belt 9b, the transmission wheel 8, the transmission roller 13, the belt 9a, and the contact drive rollers 5a and 5b. It is also possible to adopt a mode in which the deceleration rotation is adjusted in order and transmitted. In this case, since the swing plates 3 can be attached to the inside of the body B, there is no obstacle when the tire T is manually operated. Wiring is omitted in the above figures.

[0031]

[Action]

 The present invention is as described above, and the contact drive roller 5 is normally in the non-contact state with the tire T of the human powered vehicle. In the case of a one-way type such as a bicycle, when the drive motor 6 which is an auxiliary power is started, when the drive motor 6 is rotationally started, the contact drive roller 5 is used. When, for example, it rotates counterclockwise, the starting swing reaction occurs in the clockwise direction, which is the direction opposite to the direction of rotation of the swing plate 3 around the pivot 3b. The contact drive roller 5 pivotally supported by the swing plate 3 is brought into contact with the tire T surface of the human-powered vehicle with the drive transmission surface separated from the pivot support portion 3b of the swing plate 3. After the contact, the contact drive roller 5 is kept in a pressure contact state so that the contact drive roller 5 is pulled deeper in the clockwise direction with respect to the tire T surface by the power of the continuous rotational force of the contact drive roller 5. Rotational power is transmitted from the drive motor 6 to the tire T.

In the case of a bidirectional front-rear type used for a human-powered vehicle that moves forward and backward like a wheelchair, when the drive motor 6 which is auxiliary power is started, the drive motor is driven. When the contact drive rollers 5a and 5b rotate counterclockwise, for example, as shown in FIG. 4, when the rotor 6 starts to rotate in the forward direction, the swing plate 3 moves relative to the pivotal support 3b. Therefore, the starting rotation recoil occurs in the clockwise direction opposite to the rotation direction. The contact drive rollers 5a and 5b pivotally supported by the swing plate 3 are separated from each other around the pivotal support portion 3b of the swing plate 3, and the drive transmission surface of the contact drive roller 5b is separated by a person. After contact with the tire T surface of the force-driven vehicle, the contact drive roller 5b is rotated clockwise with respect to the tire T surface by the power of the continuous rotational force of the contact drive roller 5b after the contact. As a result, the rotational power is transmitted from the drive motor 6 to the tire T while being held in a pressed contact state so as to be pulled in deeper.

On the contrary, when the wheelchair is moved backward, the drive motor 6 is started in the reverse rotation. Then, as shown in FIG. 3, the contact drive rollers 5a and 5b rotate, for example, clockwise, and the swing plate 3 rotates in a direction opposite to the rotation direction about the pivot 3b. A counterclockwise starting rotation reaction occurs. The contact drive rollers 5a and 5b pivotally supported on the swing plate 3 are separated from each other around the pivot support portion 3b of the swing plate 3 by the drive transmission surface of the contact drive roller 5b. The contact drive roller 5a is brought into contact with the tire T surface of a human-powered vehicle, and after the contact, the contact drive roller 5a is rotated counterclockwise with respect to the tire T surface by the power of the continuous rotational force of the contact drive roller 5a. As a result, the rotational force is transmitted from the drive motor 6 to the tire T while being held in a pressed contact state so as to be pulled in deeper.

Further, by operating the swing plate 3 to forcibly bring the contact drive roller 5 into contact with the tire T surface, when the contact drive roller 5 is rotated, the direction opposite to the drive transmission is generated. It can be used as a powerful brake by regenerative braking caused by the rotation of the shaft of the drive motor 6 which is transmitted to the drive motor 6 and stopped.

[0035]

[Effect of device]

 The present invention has been described above. Since the auxiliary drive device including the transmission device is separated from the human power drive system at all times, the vehicle can travel lightly, so that it does not burden human power. Also, when the auxiliary power is started to be used, the motor drive can be transmitted and disconnected with a single touch of a switch, so that even a physically handicapped person can easily operate it.

Further, since the tire surface having a large diameter is used, the tire itself also serves as a speed reducing mechanism, and it is possible to use an extremely small-sized motor. Therefore, it can be more compactly mounted on the body of a bicycle, wheelchair, etc. than conventional devices such as a tire pinch type. In addition, since it is extremely lightweight, the physical load of human-powered driving is reduced accordingly.

Further, in the case of the conventional tire drive system, it was difficult to stably perform the drive transmission because the frictional resistance was changed by the air pressure, but in the present invention, the contact drive roller-5 is used to generate a spring or the like. Since the power is transmitted while pressing the tire at a constant pressure without relying on the biasing force, reliable and stable power transmission can be achieved. Furthermore, the extremely simple structure is easy to manufacture, hard to break down, and very easy to maintain. It can be attached to the body of a bicycle or wheelchair with bolts very easily.

[Brief description of drawings]

FIG. 1 is a front view showing a state when the device of the present invention is not used.

FIG. 2 is a front view showing a state of the device of the present invention during traveling.

FIG. 3 is a front view showing a state when the apparatus according to another embodiment is traveling backward.

FIG. 4 is a front view showing a state of the apparatus of another mode during forward traveling.

FIG. 5 is a front view showing a mode in which the device of the present invention is arranged directly above a tire T.

FIG. 6 is a front view showing a mode in which the device of the present invention is arranged on the slope of the tire T.

FIG. 7 is a front view showing another aspect.

FIG. 8 is a perspective view showing the present invention.

FIG. 9 is a perspective view showing another aspect.

FIG. 10 is a perspective view showing another aspect.

[Explanation of symbols]

1 Support Plate 1a Tip of Support Plate 1b Plate Base of Support Plate 2 Shaft Bearing 3 Swing Plate 3a Tip of Swing Plate 3b Pivot of Swing Plate 4 Shaft Bearing 5 Contact Drive Roller 5a Contact Drive Roll -La 5b Contact drive roller 6 Drive motor 7 Transmission vehicle 8 Transmission vehicle 9 Belt 10 Operation lever 11 Wire-12 Bolt 13 Transmission roller B Human powered vehicle body T Tire D Transmission mechanism L Distance from pivot part of swing plate to farthest face of contact drive roller H Distance from pivot part of swing plate to shortest face to tire

Claims (5)

[Scope of utility model registration request] 1. A manual drive vehicle, comprising a support plate (1) having a bearing portion (2) at a tip portion (1a) and a base portion (1b) facing a tire T surface of the manual drive vehicle. A body (B) can be fixed to a part of the body (B), and a swing plate (3) is mounted on a bearing portion (2) of a support plate (1) of the body (B) so as to swing freely in the rotational direction of the tire T toward the tire T surface. It is pivotally supported as much as possible, and a bearing portion (4) is provided at the tip portion (3a) of the contact drive roller.
The distance L from the pivot (3b) of the swing plate (3) to the farthest surface of the contact drive roller (5) is the pivot (3b) of the swing plate (3). ) To the tire T to the shortest surface, and the contact drive roller (5) is forward of the distance T to the tire T in the rotation direction from the shortest surface to the tire T. Mounted at a position slightly apart from the tire T surface so as to be maintained by weight balance or spring urging force, and a drive motor (6) is fixed to the swing plate (3), An auxiliary power transmission device characterized in that the drive motor (6) is rotationally driven by the contact drive roller (5) directly or via a transmission mechanism D. 2. A transmission mechanism D is a drive motor via large and small transmission wheels (7), (8) mounted on a swing plate (3).
The auxiliary power transmission device according to claim 1, wherein the auxiliary drive power is transmitted from (6) to the contact drive roller (5) with deceleration adjustment. 3. The auxiliary power transmission device according to claim 1, wherein the transmission mechanism D is based on transmission by a belt (9). 4. Two contact drive rollers (5a), (5b) are mounted on the swing plate (3) from the pivotal support (3b) of the swing plate (3) to the shortest surface from the tire T. The auxiliary power transmission device according to any one of claims 1 to 3, wherein the auxiliary power transmission device is mounted separately on both sides of a distance H position. 5. The contact driving roller (5) can be brought into contact with the tire T surface by forced movement of the lever (10) of the swing plate (3).
An auxiliary power transmission device according to claim 1.