JP3025512U - Front-wheel drive electric assist mechanism - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a front wheel drive electric assist mechanism for a bicycle. SOLUTION: One fixing plate is connected to an appropriate position inside a front fork of a bicycle, one driving member is provided on one side surface of the fixing plate, and one arc shape is formed on the other side surface of the fixing plate. After attaching the clamp, adjust the movement in the arc-shaped range,
The transmission is unidirectionally connected to the front wheel axle of the bicycle and the inner side of the front fork, and a unidirectional bearing is provided in the transmission disc. The transmission plate is connected to a driving member by a belt and is interlocked with the driving member, and the locus of the belt is made constant by holding an arc-shaped holding device,
And controlling the drive member with a control box on the bicycle, and when the bicycle reaches a certain rotational speed by driving, starts driving the drive member, and also transmits the drive member unidirectionally to the transmission plate, thereby Helps to glide.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a kind of front wheel drive electric assist mechanism, especially a kind of bicycle front wheel drive electric assist mechanism, which is easy to operate and has a simple structure, and is highly replaceable in use.

[0002]

[Prior art]

 Bicycles are one of the essential transportation tools in daily life, have a long history, and are widely accepted by people of all ages as light and easy-to-use transportation tools, but they break through in the process of development of bicycles. A difficult neck is in its gear shifting structure, and therefore, a motorcycle, which has high maneuverability and sufficient horsepower, that is, a motorcycle, tends to be used instead of a bicycle for leisure or exercise.

However, since gasoline-powered mobile vehicles such as motorcycles have a problem of air pollution, electric bicycles are now being produced under the demand of environmental protection. It uses an electric motor as the main drive source, and in addition to the bicycle wheel system, assists the forward movement. In the structure of a general electric bicycle, most of the auxiliary force is added to the rear wheel, and usually a rim motor is combined with the rear wheel, and the rim motor is added directly on the rear wheel axle. There is. Such an electric bicycle has the following structural and operational drawbacks. 1. The structure of the rim motor was complicated, heavy, not easy to install, and costly to manufacture. That is, since a general rim motor has a flat, large-area board-like structure that conforms to the shape of the hub of the rear wheel of a bicycle, the coil, iron core, and its turning circuit in the motor are relatively narrow. It was pushed into space, which made the structure complex, heavy, and expensive to manufacture, making it difficult to mount the rear wheels on the axle. 2. The operation was not easy, the operation control was difficult, and danger was likely to occur. That is, since the conventional electric bicycle uses a heavy rim motor, it is not easy to install, and the weight of the rear wheel of the electric bicycle increases, which makes it difficult to control the operation. Unstable and easy to cause danger. 3. It was inferior in conversion of application and operation state. In other words, the rear wheel assisting structure used in a general electric bicycle in general uses a rim motor, and the rim motor is directly attached to the rear wheel. Since the entire rear wheel part and the transmission flywheel had to be removed together, there were various tangible and intangible restrictions, installation was difficult, and modification costs were incurred.

[0004]

[Problems to be solved by the device]

 The main object of the present invention is that the structure is simple, the installation is easy, the manufacturing and assembling cost of the product can be significantly reduced, and the front wheel is not overloaded. Is to improve the operability of the conventional electric bicycle and to provide a kind of front wheel drive electric assist mechanism that enhances the controllability and safety in the driving operation.

A second object of the present invention is to provide a front wheel to one transmission board by one driving member controlled by a control box after an occupant steps on a bicycle pedal to move the bicycle at a constant speed. It is to provide a kind of front wheel drive electric assist mechanism that enhances the driving speed of an electric bicycle by assisting driving.

Still another object of the present invention is to mount a front fork and a vehicle body, and when making a traditional pedal type bicycle, slightly remove the front fork and replace it with a front wheel of a general bicycle. Well, therefore, it is to provide a kind of front-wheel drive electric assist mechanism that can easily change the application and use condition, and can be easily refurbished to increase the interchangeability and reduce the refurbishment cost.

[0007]

[Means for Solving the Problems]

 The front-wheel drive electric assist mechanism of the present invention comprises one front fork and one fixed plate, each of which is provided with a fitting hole for a bolt at an appropriate position on each side of one side thereof and has one in the center. Two fitting holes are provided, which are fixed on one side of the front fork rear part of the front wheel of the bicycle, and one driving member, which is fixed on one side surface of the fixing plate, It has adjusting bolts on both sides of its end face, and has a transmission rotary shaft at the center of the end face, and the rotary shaft penetrates the fitting hole to project outside the fixed plate and the end of the rotary shaft is connected to one gear. A circle in which the gear is interlocked with the rotary shaft and one arc-shaped clamp, which has an arc-shaped structure, and which is fitted to the adjusting bolts of the drive member corresponding to both ends. An arc-shaped long hole is drilled, and one of them is used as a fulcrum to form an arc After the amount of movement to trace is adjusted, it is screwed and fixed to one side of the fixed plate, and one protrusion is provided at the middle position, and one pulley is fitted on the protrusion. When the arcuate clamp moves in an arcuate shape and is adjusted, the projection is also appropriately moved and adjusted, and one transmission plate, and a gear plate is provided on one side thereof. Saw teeth are provided around the gear disk, and an accommodating chamber of an appropriate size is opened in the center of the transmission disk and the gear disk. It is installed in the accommodating chamber of the board and is fitted on the front wheel axle to make the transmission direction of the transmission board be one, and it is made into one belt, which is provided with serrations on the inner surface and the gear of the drive member and the transmission. It meshes with the saw teeth around the gear disk of the disk and is indirectly connected to the drive member by the drive disk and the gear disk. It drives the rolling, and its tightness is adjusted by the adjustment of the arc-shaped clamp, and the track in the transmission direction is fixed by being clamped between the pulley and the gear disk of the driving member to prevent deviation. In addition to those that do not occur, the above-mentioned driving member drives the rotation of the transmission plate via the belt, and in addition, the combination of the unidirectional bearings makes the front wheels acquire a unidirectional assisting force. .

According to another aspect of the invention, the drive member is a DC motor.

In the invention of claim 3, the transmission plate and the gear plate are made of light plastic or acrylic.

According to a fourth aspect of the present invention, the unidirectional bearing has one ratchet wheel and one hook-shaped elastic stopper, the ratchet wheel being mounted in the accommodating chamber of the transmission disk and the gear disk, and the front wheel. The hook-shaped elastic stopper is fitted on the axle, and is fixed to the inner surface of the gear disk so that it can contact with the ratchet teeth around the ratchet wheel so that only the direction of the assisting force transmitted by the transmission disk is unique.

According to a fifth aspect of the present invention, one control box is combined with the drive member to control the supply of power and drive signals to the drive member at an appropriate time.

According to the invention of claim 6, when the power source and the drive signal are applied to the drive member of the control box, the pedestrian can drive the pedal power of the bicycle to reach a certain speed. It is supposed that the power supply will be stopped if the pedal is stopped.

[0013]

[Embodiment of device]

 The present invention provides a kind of front wheel drive electric assist mechanism, which is used for a kind of drive device of an electric bicycle. According to the present invention, one fixed plate is connected to an appropriate position inside the front fork of the bicycle, one driving member is provided on one side of the fixed plate, and one circle is provided on the other side of the fixed plate. After mounting the arc clamp, adjust the movement in the arc range, and then solidify the chain, further connect one transmission plate to the front wheel axle of the bicycle and the inside of the front fork, and install a unidirectional bearing in the transmission plate. It transmits to the front wheels in one direction. The transmission board shall be connected to the drive member by a belt and be interlocked with the drive member, and the locus of the belt shall be made constant by sandwiching the arcuate clamp, and the drive member shall be controlled by the control box on the bicycle. When the bicycle drives and reaches a certain rotation speed, the driving of the drive member is started, and the transmission is unidirectionally transmitted to the transmission board, thereby helping the front wheels to slide. The present invention thus constitutes a front wheel drive electric assist mechanism for one bicycle.

[0014]

【Example】

 1 to 4 is a front wheel drive electric assist mechanism for a bicycle according to the present invention, which includes one fixing plate 10 and one fixing plate 10 on one side of each fixing plate at appropriate positions. Two bolts 11 and 11 'are screwed in, and one fitting hole 12 is provided in the center of the fixing plate 10. The fixed platen 10 is fixed to one side of the rear part of the front fork 20 of the front wheel A of the bicycle.

Further, in the present invention, one driving member 30, which is, for example, a DC motor, is fixed on the other side surface of the stationary platen 10. The rotary shaft 31 of the driving member 30 penetrates through the fitting hole 12 of the fixed plate 10 and projects to the outside of the fixed plate 10, and the end of the rotary shaft 31 is connected to one gear 32. Interlocked with 31.

In addition, according to the present invention, an arcuate clamp 40 having an arcuate piece shape is provided, and the arcuate clamp 40 has arcuate holes at both ends thereof to be fitted with the bolts 11 and 11 ′. 41, 41 'are perforated. The arcuate sandwiching device 40 is fixed on one side surface of the stationary platen 10 by a fastening member 411 after adjusting the position of drawing an arcuate locus with the bolt 11 on the driving member 30 as a fulcrum. Further, a protrusion 42 is further provided at a middle position of the arc-shaped clamp 40, and one pulley 43 is fitted on the protrusion 42 and is used to control the belt 70. Further, the protrusion 42 and the pulley 43 are vertically moved and adjusted so as to maintain the state in which the pulley 70 is suppressed when the position of the arcuate clamp 40 is adjusted.

Further, in the present invention, one transmission disc 50 is provided, a gear disc 52 is provided on one side of the transmission disc 50, and saw teeth for transmission are provided around the gear disc 52 so that the transmission disc 50 and the gears are Both boards 52 are made of light plastic or acrylic. The transmission plate 50 is chain-fixed on the front wheel A by a screw 511 penetrating from one side surface thereof, and an accommodation chamber 53 of an appropriate size is opened in the center of the transmission plate 50 and the gear disc 52. The inside of the accommodating chamber 53 is used for mounting a unidirectional bearing.

The unidirectional bearing includes one ratchet wheel 60 and one hook-shaped elastic stopper 61. The ratchet wheel 60 is fixed in the accommodation chamber 53, and its center is fitted on the axle 1A of the front wheel A. The hook-shaped elastic stopper 61 is screwed to the inner surface of the gear disc 52 with a screw 611 to contact the ratchet teeth around the ratchet wheel 60, whereby the front wheel A is unidirectionally moved to the ratchet wheel 60 ( That is, the power is transmitted only in the forward direction.

Further, in the present invention, one pulley 70 is provided. Saw teeth are provided on the inner surface of the pulley 70 so as to mesh with the gear 32 of the drive member 30 and the saw teeth around the gear disk 52 of the transmission disk 50. As a result, the drive member 30 indirectly drives the rotation of the transmission disc 50 and the gear disc 52. In addition, the tightness of the pulley 70 is adjusted by the position adjustment by the arcuate movement of the arcuate clamp 40 (see FIG. 4), and the pulley 70 is clamped by both the pulley 43 and the gear 32. The transmission direction locus of the pulley 70 is fixed and no deviation is generated. Thus, the entire structure of the front wheel drive electric assisting mechanism of the bicycle of the present invention is constructed.

When the bicycle front wheel drive electric assist mechanism of the present invention shown in FIGS. 1 to 4 is actually applied, as shown in FIG. 5, the fixed platen 10 is fixed to the front fork 20, and The drive member 30 may be connected to the fixed platen. Therefore, when mounting on a general bicycle, if the same type is used, the present invention can be easily and quickly implemented by replacing it with the wheel of the front fork of the front-wheel drive electric assist mechanism of the present invention. Further, a power source and a control signal are provided to the driving member 30 at an appropriate time via one control box 80 to cause the driving member 30 to transmit auxiliary power to the transmission plate 50 via the belt 70 to drive the front wheel A. In this way, a driving movement is made to move forward in a single direction. Besides, when the operation of the control box 80 is driven by the key 81, the power supply provided by the control box 80 and the standby of the control signal are driven, and when the bicycle is driven at a constant speed by the power of pedaling first. The driving member 30 is driven to apply the above-mentioned auxiliary action force in a timely manner to improve the driving efficiency of the bicycle. When the pedaling is stopped or the bicycle is running at idle speed, no power is supplied to the drive member 30 by the control of the control box 80, thus saving the power consumption.

[0021]

[Effect of device]

 1. Simple structure, convenient to install, save installation time and cost. That is, when mounting the present invention, it suffices to mount the front wheel A of the same type vehicle on the front fork 20, and mount the members such as the transmission plate 50, the unidirectional bearing, and the belt 70 at the relative positions of the front wheel A. Is able to simultaneously manufacture two different types of power products (one with pedal power and the other with assistive power of the invention) type of bicycle product, thus saving time in assembly, production, labor and manufacturing. The cost can be reduced. 2. The parts are light, do not affect the front wheel operation performance, and are excellent in safety. That is, in the present invention, since the transmission plate 50 having a light weight and a simple structure can be directly attached to the front wheel A, it is possible to mount the heavy rim motor used in the traditional electric bicycle on the wheel rather than the auxiliary mechanism. It is much lighter and its operability is not affected, ensuring the safety of the driver. 3. Excellent renovation and applicability. That is, according to the present invention, when a user attaches the auxiliary mechanism of the present invention to a pedal type bicycle of the same type to make it an electric bicycle, only the fixed plate 10 and the front fork 20 to which the driving member 30 is connected and the transmission plate 50 are used. And control box 80, you can buy and replace them yourself, and it's just as easy to get a pure pedal bike back, and overall it's flexible for refurbishment and application, and you'll need it. It can be renovated at any time. As described above, the present invention is a highly creative device, and in particular, the structure of the front-wheel-drive electric assist mechanism has an expected purpose from the standpoint of assembly, steering, replacement, and application of auxiliary power for bicycles. It achieves a practical effect.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a rear view of the present invention, showing the structure between the fixed plate, the driving member, the arcuate clamp, the belt and the transmission plate of the present invention.

FIG. 4 is a partial side view of the present invention, showing a state in which the arc-shaped clamp of the present invention clamps and fixes a belt.

FIG. 5 is a side view showing an actual application state of the present invention.

[Explanation of symbols]

10 ... Fixed plate 11 ... Bolt 12 ... Fitting hole 20 ... Front fork 30 ... Drive member 31
・ ・ ・ Rotary shaft 32 ・ ・ ・ Gear 40 ・ ・ ・ Arc-shaped clamp 41 ・ ・ ・ Arc-shaped elongated hole 411 ・ ・ ・ Screw member 4
2 ... Protrusion 43 ... Pulley 50 ... Transmission board
51 ... Screwing hole 511 ... Screw 52 ... Gear disk 53 ... Storage chamber 60 ... Ratchet wheel 61 ... Hook-shaped elastic stopper 611 ... Screw 70 ... Belt 80 ... ..Control box 81 ... Key hole A ... Front wheel A1 ... Axle

Claims (6)

[Scope of utility model registration request] 1. A front fork and a fixed plate, each of which is provided with a fitting hole for a bolt at an appropriate position on each side of one side surface thereof and has one fitting hole provided in the center thereof. One of the driving members is fixed on one side of the front fork rear part of the front wheel of the bicycle, and one driving member is fixed on one side surface of the fixing plate, and adjustment bolts are provided on both sides of the end surface. And has a transmission rotary shaft at the center of the end face, the rotary shaft penetrates the fitting hole and projects out of the fixed plate, and the rotary shaft end is connected to one gear so that the gear can be rotated by the rotary shaft. The one that is interlocked with and the other is an arc-shaped clamp, and has a structure of an arc piece,
Also, an arc-shaped elongated hole fitted to the adjusting bolt of the drive member corresponding to both ends is bored, and after adjusting the movement amount drawing an arc-shaped locus with one adjusting bolt as a fulcrum,
The fixed plate is screwed and fixed to one side surface, and one protrusion is provided at the middle position, and one pulley is fitted on the protrusion so that the arc-shaped clamp moves in an arc shape. When it is adjusted, the protrusion is also appropriately moved and adjusted, and it is considered as one transmission plate, a gear plate is provided on one side thereof, and saw teeth are provided around the gear plate, A transmission chamber and a gear disc are provided with an accommodation chamber of an appropriate size in the center, and one unidirectional bearing is mounted in the accommodation chamber of the transmission disc and on the front axle. One that is fitted and has one transmission direction of the transmission plate, and one belt, which is provided with saw teeth on the inner surface and meshes with the gear of the drive member and the saw teeth around the gear plate of the transmission disc to drive the drive. The member indirectly drives the rotation of the transmission plate and the gear plate, and the arc The tightness is adjusted by the adjustment of the clamp, and it is clamped between the pulley and the gear disk of the drive member so that the locus in the transmission direction is fixed and the deviation does not occur. A front-wheel drive electric assist mechanism characterized in that the rotation of a transmission plate is driven by a member via a belt, and a front-wheel drive assisting force is acquired in a front wheel by a combination of unidirectional bearings. 2. The front wheel drive electric assist mechanism according to claim 1, wherein the drive member is a DC motor. 3. A front wheel drive electric assist mechanism, wherein the transmission plate and the gear plate are made of light plastic or acrylic. 4. The unidirectional bearing has one ratchet wheel and one hook-shaped elastic stopper, the ratchet wheel is mounted in a storage chamber of a transmission plate and a gear plate, and is fitted on a front wheel axle, The front wheel according to claim 1, wherein the hook-shaped elastic stopper is fixed to the inner surface of the gear disc so as to contact the ratchet teeth around the ratchet wheel so that the auxiliary action force transmitted by the transmission disc is the only direction. Drive electric assist mechanism. 5. The front wheel drive motor according to claim 1, wherein a single control box is combined with the driving member to control the supply of power and driving signals to the driving member at appropriate times. Assistance mechanism. 6. When the power source and drive signal are applied to the drive member of the control box, the pedestrian stops pedaling when the pedal power of the bicycle is driven to reach a certain speed. The front wheel drive electric assist mechanism according to claim 5, wherein the supply of power is stopped.