JPH0958566A - Bicycle with auxiliary power and its auxiliary power device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount am auxiliary power to a bicycle under use at a present by a method wherein a motor the rotation speed of which is variable is linked to the rear wheel axle of a bicycle through a reduction mechanism and a clutch is provided to transmit and cut off the rotation force of the motor to and from a transmission gear combined with the chain of a bicycle. SOLUTION: An auxiliary power device 20 is disposed on the rear wheel side of a bicycle and a battery 58 is arranged at a carrier as a power source to drive the device 20. A handle is provided with an operation lever 60 to operate an auxiliary power device 20 and a variable changeover switch 65 for the rotation speed of the motor 22. The auxiliary power device 20 comprises a motor 22; and a reduction gear 23, and is mounted on a mounting plate 30, arranged at a mounting means to the bicycle, and covered with a cover 39 for a purpose to protect from rain and dirt. When the operation lever 60 is pressed down, a wire is stretched to turn ON the power source of a battery 58, and simultaneously a clutch is engaged to transmit rotation of the motor 22 to a drive chain through a transmission gear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a power unit using a battery as a power source as auxiliary power for a bicycle,
The present invention relates to a bicycle with auxiliary power improved so that pedals can be lightly padded, and an auxiliary power device thereof.

[0002]

2. Description of the Related Art Bicycles are widely used as a convenient vehicle regardless of generation. In general, this bicycle uses a human power source as a drive source by rotating the rear wheels by stepping on the pedals. Can be seen. This conventional bicycle with auxiliary power uses a battery as the power source of the power unit, and the sensor detects the pedaling force and its rotation speed, and the microcomputer processes these to generate power according to the running state. , Is transmitted to the pedal crankshaft. At normal speeds, the battery assists with half the power required for running, and the auxiliary power is set to decrease as the speed increases.

[0003]

A conventional auxiliary power-assisted bicycle, which detects the pedaling force and the number of revolutions of the pedal with a sensor and transmits the power by processing with a microcomputer, has a big disadvantage that the price is expensive. is there. Bicycles, which were cheap vehicles, were too expensive to be supplemented with power, and were not affordable for anyone. In addition, there is also a problem that a bicycle with auxiliary power needs to be newly purchased instead of a method in which the bicycle in use is diverted to be modified into a bicycle with auxiliary power. The present invention has been made to solve such a problem, and an object of the present invention is to provide a bicycle with auxiliary power that can be attached to a bicycle currently in use and an auxiliary power device for the bicycle.

[0004]

In order to solve the above problems, the present invention has the following configuration. The bicycle with auxiliary power described in claim 1 is provided with a transmission gear with a clutch that transmits or disconnects the rotational force of the motor via a reduction mechanism to the shaft of the motor whose rotation speed can be varied. This clutch is operated using the operating lever that turns on and off the power from the battery, and these devices are used as auxiliary power sources to supply the rotational force to the bicycle chain via the transmission gear. So I decided to use a bicycle with auxiliary power. The auxiliary power unit described in claim 2 is
A transmission gear is arranged on a motor shaft whose rotation speed can be varied via a reduction mechanism. A clutch for transmitting and disconnecting the rotational force of the motor was provided between the reduction gear and the transmission gear, and these clutches were attached to a mounting plate having a bicycle mounting means. Auxiliary power for a bicycle is provided by providing an operating mechanism on the mounting plate for simultaneously operating the clutch and turning on / off the power supply of the motor battery, and driving the motor using the battery as the power supply. The device.

[0005]

The auxiliary power unit can be mounted on a bicycle currently in use by using the mounting means provided on the mounting plate. The motor used in this auxiliary power unit may be a recycled product used for driving a wiper of a bicycle. Since this motor rotates using a 12-volt battery as a power source, there is insufficient power to run the bicycle as an independent power source. Therefore,
As with a normal bicycle, by driving the motor while stepping on the pedal, it is possible to step on the pedal with less force than before.

[0006]

Embodiments of the present invention will be described with reference to the drawings. 1 is an explanatory view showing a bicycle with auxiliary power of the present invention, and FIG. 2 is a partially exploded perspective view showing a portion related to auxiliary power from the bicycle of FIG. As shown in FIG. 1, the bicycle 10 with auxiliary power of the present invention is a rear wheel 13 of a bicycle 12.
Side auxiliary power unit 20 and a battery 58 provided on the cargo bed 14 as a power source for driving this unit.
And a handle 16 for operating the auxiliary power unit 20.
The control lever 60 is provided on the upper part of the control lever, and a changeover switch 65 that also changes the rotation speed of the motor. Each of these parts and devices can be attached to and detached from the bicycle.
Shows a state where these are removed, and these will be further described. As shown in FIG. 2, the auxiliary power unit 20
Is composed of a motor 22, a speed reducer 23 and the like, is attached to a mounting plate 30 provided with a mounting means for the bicycle 12, and is covered with a cover 39 for the purpose of protecting it from rain and dirt.
In this auxiliary power unit 20, when the operation lever 60 provided on the handle via the wire is pushed down in the direction shown by the arrow in the figure, the wire is pulled and the battery is turned on, and at the same time the clutch is engaged. Transmits the rotation of the motor. The operating lever 60 is a commercially available product. The changeover switch 65 switches the rotation speed of the motor 22, and is attached to the handle 16 by using a commercially available product like the operation lever. The battery 58 is attached to a part of the cargo bed 14 via an attachment device, and a battery of 12 volt is used according to the motor 22.

The auxiliary power unit 20, which is a feature of the present invention, will be described in more detail with reference to the drawings. FIG. 3 is FIG.
4 is an exploded perspective view showing the auxiliary power unit shown in FIG. 4, and FIG. 4 is an exploded perspective view showing the rear surface side of the mounting plate shown in FIG.
As shown in FIG. 3, the auxiliary power unit 20 includes a motor 21 with a speed reducer as a drive source, an operation mechanism 40 that moves the motor, and a mounting plate 30 that mounts these and has mounting means for a bicycle. Consists of. The speed reducer motor 21, the operating mechanism 40, and the mounting plate 30 will be described in more detail.

The motor 21 with a speed reducer comprises a motor 22 for moving a wiper of an automobile and a speed reducer 23 provided at the shaft center of the motor. Both of them can be recycled products that are diverted from a scrap car. Is. Since the motor 22 for moving the wiper has a force and can be moved by a DC voltage of 12 V, it is suitable for diversion. A transmission gear 26, which is integrated with a clutch and can be combined with a bicycle chain, is arranged on an axis 25 of the speed reducer 23.
The rotation of the transmission gear 26 is caused by rotation of the terminal 2 provided on the speed reducer 23.
4 can be selectively used in two stages of speed by switching the switch 4 by the changeover switch 65 described above.

The mounting plate 30 is made of a metal plate and has a hole 32 for mounting on a shaft of a rear wheel as a mounting means 31 for a bicycle.
And a chain stay connecting the rear wheel and the shaft center of the pedal with a long hole 33 to be mounted via a mounting bracket (not shown). Further, by providing the opening 34 into which the transmission gear 26 is inserted, the transmission gear 26 is arranged so as to project to the back surface side of the mounting plate 30 shown in FIG. The shaft center that supports the transmission gear 26 is supported by the support 35 shown in FIG. 4, and the gear of the transmission gear is combined with a part of the chain provided on the bicycle to drive the chain. The transmission gear 26 can be disconnected from the drive of the chain by being attached to the operation lever 60 via the clutch that is movable.

The operating mechanism of the present invention will be described with reference to the drawings. 5 is a perspective view showing a mounting position of the operation mechanism on the back surface side of FIG. 3, and FIG. 6 is a perspective view showing a main part thereof except for the transmission gear of FIG. As shown in FIG. 5, the operating mechanism 40 of the present invention is formed by diverting a part of the clutch, and is mounted on the back surface side of the mounting plate 30 shown in FIG.
That is, it is arranged between the transmission gear 26 and the mounting plate 30. The movement of the wire 61 connected to the operation lever 60 rotates the operation ring forming the clutch, and the rotation of the operation ring turns on / off the clutch and turns on / off the battery power supply. The operation mechanism 40 will be described in more detail. Operating mechanism 4
When the operating lever (not shown) is operated as shown in FIG. 6, the wire 61 moves in the direction indicated by the arrow A in the figure, and the operating ring 44 fixed to the wire 61.
Also rotates in the direction indicated by arrow B. The operation ring 44 is provided with a threaded projection 46 on its outer periphery, and the tip end of the operation ring 44 moves in the slide groove 41 provided on the guide ring 42 to push out the operation ring 44 in the direction indicated by the arrow C in the figure. It will be. This movement in the C direction moves the transmission gear 26 and connects the clutch.

The mechanism and operating mechanism of this clutch will be described in more detail with reference to FIG. FIG. 7 is an exploded perspective view showing the relationship of FIG. As shown in FIG. 7, the operating mechanism 40 is arranged around the shaft 25 of the speed reducer protruding from the opening 34 of the mounting plate 30, and is fixed to the mounting plate 30 and is a tubular guide ring 42 with a slide groove 41. And an operation ring 44 provided so as to cover the outer circumference of the guide ring and provided with a screw-shaped projection 46 around the guide ring, and a guide groove 57 into which the tip of the screw-shaped projection 46 attached to the operation ring is inserted. And a transmission gear 26. The guide groove 57 integrated with the transmission gear is provided in the inclined projection 5 that constitutes one of the clutches.
6 is also integrated, and forms a clutch 55 that is joined to or separated from the other clutch side.
It is the guide ring 42 and the operation ring 44 that operate the clutch.

As shown in FIG. 7, the guide ring 42 has a circular cylindrical shape, and is formed with diagonal slits on the wall surface thereof. The slide grooves 41 on which the screw-shaped projections 46 run are arranged to face each other, and the mounting plate 30 is attached. Is stuck to. The operation ring 44 has a cylindrical shape that slides on the outer peripheral wall surface of the guide ring 42, and a pair of screw-shaped projections 46 to be inserted into the slide grooves 41 of the guide ring are arranged in the screw groove holes 45 to rotate the screw. By doing so, the protrusion height of the protrusion can be changed. The tip portion of the screw-shaped projection 46 is inserted into a guide groove 57 integrated with the transmission gear 26 via the slide groove 41, and the guide ring 42, the operation ring 44, and the transmission gear 26 are combined to be movable. It is integrated as much as possible. Therefore, when the operating lever 60 (not shown) is operated, the wire 61 rotates the operating ring 44, and the screw-shaped projection 46 moves in the slide groove 41 to move the operating ring 44 in the direction of arrow C shown in FIG. To engage the clutch.

A wire fixing means 48 for fixing the end portion of the wire 61 shown in FIG. 6 between the pair of screw-shaped projections 46.
Is attached, and the operation ring 44 is set to rotate by the movement of the wire. A rod-shaped arm 50 protruding from the outer peripheral wall surface of the operation ring 44 is provided at a position facing the wire fixing means 48, and a switch pressing projection 52 is provided at the tip of this arm. By the rotation of the operation ring 44, the arm 50 and the protrusion 52 also rotate together, and the switch 54 shown in FIG. 6 is turned on. A coil spring 53 is provided at the tip of this arm, and the other end is fixed to the mounting plate 30. This coil spring
It serves to return the wire 61 to the original position in the opposite direction when the operation of the operation lever 60 is stopped.

According to the operation mechanism thus formed, when the operation lever 60 shown in FIG. 2 is operated, the operation ring 4
As the screw 4 is rotated, the screw-shaped projection 46 provided on the operation ring moves along the slide groove 41 provided on the guide ring 42, thereby connecting the clutch 55. Also,
The operation ring 44 is integrally provided with an arm 50 for turning on the battery switch, and by rotating the operation ring 44, both the turning on of the battery and the connection of the clutch can be performed at the same time.

An example of mounting the battery on the bicycle will be described with reference to the drawings. FIG. 8 is an exploded perspective view showing the attachment of the battery. As shown in FIG. 8, the battery 58 is housed in a box-shaped battery support 59. The battery support 59 is provided with a pair of projecting sides by extending opposite side wall surfaces. A hole is provided in the center of each of these projecting pieces, and it is set so that a rod can be inserted and supported in this hole. The battery mounting tool 70 for mounting the battery is mounted on the luggage carrier 14 of the bicycle shown in FIG. 1, and includes a mounting body 72 made of a strip and having a mounting hole, and a flat portion of the mounting body. And a pair of inserts 74 made of hook-shaped rods that are arranged so as to project in a direction orthogonal to. These inserts 7
4 inserts the tip into the hole of the battery support described above. One insert 74 is provided with a hinge-shaped bent portion 75 so that the tip bends and hangs down. There is. . After inserting the battery 58, the bent portion is hung to prevent the battery from being pulled out.
In addition, this battery has a security measure by locking it, not shown. The attachment main body 72 is fixed to the luggage carrier of the bicycle by using the fixing metal fitting 78.

Bicycle 1 with auxiliary power constructed in this way
According to 0, when the operating lever 60 is operated during traveling or at the same time as traveling, the operating mechanism 40 operates and the rotational force of the motor is transmitted to the bicycle chain. Since this transmission force does not always have the power to make the bicycle self-propelled, it is used as the traveling power of the bicycle together with the human power. That is, since the running force is obtained by adding the rotational force of the motor by the battery and the pedestrian's pedaling force, it is possible to run even if the pedaling force is small compared to a bicycle without auxiliary power. it can. During operation of the operation lever 60, the transmission gear 26 rotates to drive the bicycle chain, so that the pedal always rotates in the direction in which the bicycle travels. Therefore, even during this period, the occupant always depresses the pedal, and the rotation of the pedal cannot be stopped or the pedal cannot be reversed. In order to stop or reverse the rotation of the pedal, if the operation lever 60 is stopped and returned to the original state, the power is turned off and the clutch is disconnected at the same time. Therefore, it can be used as a normal bicycle. it can. The rotation of the motor can be switched to two speeds by the changeover switch 65 provided on the handlebar of the bicycle to travel.

[0017]

As described above, according to the present invention, the following effects can be obtained by providing the bicycle with the auxiliary power unit using the motor. That is, according to the bicycle with auxiliary power of the present invention, it is possible to easily perform the climbing by exerting its power especially on a slope. Also, since auxiliary power works on ordinary roads, it is an essential vehicle for people with weakened leg strength. If the operating lever is not used, it will function as a normal bicycle, so it is possible to use it properly depending on the need. Since the motor and the speed reducer can be recycled as they are for driving the wiper of the bicycle, they can be manufactured at low cost and can be attached to the currently used bicycle and used.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a bicycle with auxiliary power of the present invention.

FIG. 2 is a partially exploded perspective view showing a part related to auxiliary power from the bicycle shown in FIG.

3 is a perspective view showing the auxiliary power unit of FIG. 2 in an exploded manner.

FIG. 4 is a perspective view showing a rear surface side of the mounting plate of FIG. 3 in an exploded manner.

5 is a perspective view showing a mounting position of an operation mechanism on the back side of FIG.

FIG. 6 is a perspective view showing a main part of the transmission gear except the transmission gear of FIG.

FIG. 7 is an exploded perspective view showing the relation of FIG.

FIG. 8 is a perspective view showing attachment of a battery.

[Explanation of symbols]

 10 Bicycle with auxiliary power 20 Auxiliary power device 22 Motor 23 Reducer 25 Shaft core 26 Transmission gear 30 Mounting plate 31 Mounting means 34 Opening 39 Cover 40 Operating mechanism 41 Sliding groove 42 Guide ring 44 Operating ring 50 Arm 55 Clutch 56 Tilt projection 57 Guide groove 58 Battery 60 Control lever 61 Wire 70 Battery mount

Claims (2)

[Claims] 1. A bicycle which drives a rear wheel through a chain wound around a gear provided with a pair of pedals and which operates by operating a handle extending from a shaft of the front wheel, and a rear portion of the bicycle. A motor provided on the wheel side, having a speed reduction mechanism at its shaft tip and capable of varying its rotation speed, a battery for a power source for driving this motor, and a shaft of a speed reducer provided on the motor. A clutch for transmitting and disconnecting the rotational force of the motor to a transmission gear combined with the bicycle chain, and a transmission state of the clutch and turning on / off of the battery. A bicycle with auxiliary power, characterized in that it comprises an operating lever for moving the operating mechanism via a wire. 2. A motor having a speed reducing mechanism at the tip of the shaft and set so that the rotation speed thereof can be changed, a mounting plate which holds the motor and is provided with mounting means for a bicycle, and the mounting plate. A transmission gear that is supported to transmit the rotational force of the motor to the bicycle chain, a clutch that transmits or disconnects the rotational force of the motor to the transmission gear, and a movable operation of the clutch and the motor. An auxiliary power unit for a bicycle, comprising an operating mechanism for simultaneously turning on and off the power source of a battery to be driven.