WO2009079901A1

WO2009079901A1 - Electrically power assisting bicycle with combined power unit and transmission device thereof

Info

Publication number: WO2009079901A1
Application number: PCT/CN2008/001013
Authority: WO
Inventors: Yet Chan
Original assignee: Foster Assets Corporation
Priority date: 2007-12-24
Filing date: 2008-05-26
Publication date: 2009-07-02

Abstract

Electrically power assisting bicycle is provided with a combined power unit mounted on the bicycle body, the combined power unit is connected to the bicycle body as a main portion of the body. The combined power unit includes four modules: a transmission module with transmission mechanism inside, a permanent magnet DC motor module for driving the transmission mechanism, a battery module formed by setting a closed build-in battery box in a battery seat, and a control module for triggering the motor and controlling the drive speed. Present invention adopts several kinds of transmission devices with different structures, therefore many functions are achieved, such as single drive by motor, single drive by pedals, combined drive by motor and pedals, decelerate drive, the motor acting as a generator during drive by pedals, and the bicycle driving the motor acting as a generator to charge the battery during downgrade.

Description

Electric assist bicycle with combined power unit and transmission device thereof

The present invention relates to a power assisted bicycle, and more particularly to an electric assist bicycle for a modular combined power unit; the present invention also relates to a modular combined power unit for use on an electric assist bicycle, and a transmission. Background technique

At present, about 95% of electric bicycles seen in the domestic market use the hub motor for their power. For example, the existing wheel-motor electric bicycle is to change the wheel hub of one of the bicycles into a wheel hub. The motor; some use a wheel motor, which is mounted on the side of the front or rear wheel rim of the electric bicycle, directly drives the wheel rim by the motor shaft, or is mounted on the side of the rear axle of the electric bicycle. The motor axis is perpendicular to the rear wheel axle, and the rear wheel is driven by the motor shaft through the tapered gear. The use of the above two kinds of power does not require a transmission mechanism, which makes the electric bicycle structural arrangement relatively simple, but its disadvantages are: Because the motor drive is not through the chain, it determines the hub motor type and the wheel side motor type drive Not suitable for addition, for example: shifting shifting that can change the speed ratio, clutching that can be disengaged from the transmission, exercise bike that increases the pedal load by turning the motor into a generator, and turning the motor into a generator to the battery when the vehicle goes downhill Additional functions such as charging, and thus the expansion of functions is not extensive enough. At the same time, due to the complicated manufacturing process of the above-mentioned hub motor, compared with the conventional low-voltage DC permanent magnet motor, the production efficiency is relatively low, and the cost is relatively high, thereby increasing the production cost of the electric bicycle and making it in production. It has been subject to a certain degree of restriction. Summary of the invention

It is an object of the present invention to provide a modular modular power unit that is low in production cost and optimized in combination. Another object of the present invention is to provide an electric assist bicycle using the above modular combined power unit. It is still another object of the present invention to provide a transmission device for use in the above electric power assisted bicycle.

The object of the present invention is achieved by the following technical solutions: A modular combined power unit, comprising four modules, respectively a transmission module having a transmission mechanism therein, a DC permanent magnet motor module for driving the transmission mechanism, and a built-in type a battery module composed of a closed battery case disposed in the battery holder and a controller module for starting the motor and controlling the vehicle speed driving, wherein the contact electric pile of the battery module and the corresponding electric power of the controller module and the DC permanent magnet motor module respectively The electric connection of the pile is connected; the output shaft of the DC permanent magnet motor module extends into the motor base of the transmission module and is connected with the transmission mechanism inside the transmission module. The invention adopts a DC permanent magnet motor and combines a transmission mechanism to form a power unit, and the power unit is divided into four modules, the structure is relatively simple, and the fourth can be adopted. The optimized combination of modules and the cooperation with the car body can beautify the car body and simplify the car body structure.

The four modules are integrally assembled and connected, and one side of the casing of the transmission module is provided with a casing integrated with the casing of the transmission module, and the controller module is placed in the casing, and the end of the battery module is fixedly connected On the side of the box, the DC permanent magnet motor module is close to the battery module and the lower part of the box and is fixedly connected to the housing of the transmission module. The output shaft of the DC permanent magnet motor module extends into the base of the transmission module, and the transmission module The internal drive mechanism is connected.

The transmission module, the DC permanent magnet motor module and the controller module are integrally assembled and connected, and the casing side of the transmission module is provided with a casing integrated with the casing of the transmission module, and the controller module is placed in the casing, DC The permanent magnet motor module is close to the lower part of the box and is fixedly connected to the housing of the transmission module. The output shaft of the DC permanent magnet motor module extends into the base of the transmission module and is connected with the transmission mechanism inside the transmission module; The rechargeable battery module is separated from the above-mentioned three modules, and the battery modules are electrically connected to the power supply interface of the controller module and the DC permanent magnet motor module via wires.

An electric assist bicycle using the above-described combined power unit includes a vehicle body, and a combined power unit is provided on the vehicle body, and the combined power unit is connected to the vehicle body as a main body of the vehicle body structure. The structure of the present invention allows the power unit to be a part of the vehicle body, which not only saves raw materials, but also simplifies the structure of the vehicle body and avoids the problems caused by the large size of the power unit. The power combination unit is arranged in a horizontal arrangement; the end of the battery module is fixedly connected to the front support rod of the vehicle body, and the top of the casing of the transmission module is fixed by the fastening member to the lower end of the saddle riser, and the transmission module is located at two The housing parts of the output end respectively articulate the left and right rear fork plates; a suspension spring is arranged between the fastening component of the transmission module housing and the left and right rear fork plates. This constitutes a shock absorber rear fork, which enables a more effective shock absorption effect in the bumpy section and enhances the rider's comfort.

The power combination unit is arranged in an upright position; the end of the battery module is fixedly connected to the lower end of the body saddle riser, the front part of the transmission module housing is fixed to the front part of the vehicle body, the housing part of the two output ends of the transmission module housing and the connecting saddle The fixing members of the riser unit are fixed together with triangular left and right rear fork plates.

The power combination unit is disposed separately; the upper part of the controller module box is fixedly connected to the front part of the vehicle body, and the fastening bolts on both sides of the transmission module housing are fixedly connected to the left and right rear fork plates, and the battery module is separately fixed to the vehicle body On the shelf. The transmission device used in the above combined power unit and the electric assist bicycle includes a casing, a transmission shaft and a sprocket, and the transmission shaft is provided with an output sleeve, and the sprocket is fixedly mounted at one end of the output sleeve. The output sleeve is further provided with a worm gear assembly for realizing motor driving, and the worm wheel of the worm gear assembly Cooperating with the worm, the worm gear is placed on the output sleeve.

The transmission device used in the above combined power unit and the electric assist bicycle includes a casing, a pedal shaft and a sprocket, and the pedal shaft is provided with an output sleeve, and the sprocket is fixedly mounted at one end of the output sleeve. The other end of the output sleeve is mounted with a first ratchet pawl assembly for implementing the pedal drive, and the ratchet pawl assembly is simultaneously mounted on the pedal shaft; the output sleeve is also mounted with a worm gear side by side. And a second ratchet pawl assembly for driving the motor, the ratchet of the ratchet pawl assembly is opposite to the sprocket, and the worm gear of the worm gear assembly and the ratchet wheel of the adjacent ratchet pawl assembly are arranged concentrically And fixed connection. By connecting the worm of the worm gear assembly to the coupling of the motor, the motor can be driven. Since the pedal shaft and the output sleeve are connected by a one-way transmission ratchet mechanism, the output sleeve does not drive the pedal shaft to rotate. Therefore, the electric drive and the pedal drive can be mutually interfered, and the two can input power separately or simultaneously.

The worm gear assembly and the second ratchet pawl assembly fixedly coupled thereto are located in the middle of the output sleeve to ensure stable operation of the mechanism. The inner wall of the pawl seat of the second ratchet pawl assembly is further provided with a keyway for fixing to the output sleeve.

The ratchet pawl assembly of the output sleeve end is provided with a threaded connection between the ratchet and the output sleeve.

The housing is divided into two halves and is laterally butted. One end of the output sleeve protrudes out of the housing, and the sprocket is fixedly mounted at the end of the protruding end.

The first ratchet pawl assembly at the end of the output sleeve includes a ratchet and a pawl, and the two are matched. The ratchet is an outer ratchet, and a part of the ratchet is screwed with the output sleeve. The other part of the ratchet is fitted on the pedal shaft; the pawl is mounted on the pedal shaft, that is, the pedal shaft acts as a pawl seat.

The second ratchet pawl assembly located in the middle of the output sleeve includes a ratchet, a pawl and a pawl seat, and the ratchet is an outer ratchet. The second ratchet pawl assembly ratchet pawl mechanism located in the middle of the output sleeve may also include an inner ratchet when the mechanism has a clutch function or has a shifting function. The transmission device used in the above combined power unit and the electric assist bicycle includes a casing, a transmission shaft and a sprocket, and the transmission shaft is provided with an output sleeve, and the sprocket is fixedly mounted at one end of the output sleeve. The output sleeve is further mounted side by side with a worm gear assembly and a second ratchet pawl assembly for driving the motor, the ratchet pawl assembly including an outer ratchet, an inner ratchet and a pawl provided with a pawl a seat, wherein the inner ratchet is mounted on the output sleeve, the outer ratchet is opposite to the sprocket, and the outer ratchet is concentrically arranged and fixedly connected with the worm wheel of the worm gear assembly. By connecting the worm of the worm gear assembly to the coupling of the motor, the motor can be driven.

Due to the self-locking characteristics of some structural parameters of the worm gear, the worm gear mechanism can only be driven by the worm belt. The worm wheel can not be driven by the worm wheel. In order to realize the backward movement of the vehicle, the present invention can also be modified as follows. In the second ratchet pawl assembly, two sets of symmetrically arranged on the outer ratchet are provided. a pawl card slot, each set of pawl slots includes two small card slots separated by one side, one end of the pawl is clamped in one of the small card slots, and the other end of the pawl is clamped on the inner ratchet a plurality of teeth; the pawl seat is floatingly mounted on the output sleeve by a bearing, and the inner wall of the casing is further provided with an elastic pressure roller, the elastic pressure roller is located above the pawl seat, and is pressed Tightly on the pawl seat, this elastic pressure roller dampens the pawl seat. The pawl seat is neither fixed to the outer ratchet nor fixed to the inner ratchet, but rests on the output sleeve through the bearing, so it is called "floating".

Since the pawl seat of the second ratchet pawl assembly is floating, the pawl seat can be freely rotated by an angle relative to the outer ratchet, and the outer ratchet of the second ratchet pawl assembly is rotated backward. After a certain angle, one end of the pawl clamped in one of the small ratchet slots will be depressed, and the other end of the pawl will be disengaged from the tooth shape on the inner ratchet. At this time, the inner ratchet can be opposite to the pawl seat. If the two-way freely rotates, the ratchet pawl assembly does not work, that is, a neutral state is formed, and the damping effect of the elastic pressure roller on the pawl seat can keep the disengaged state unchanged; on the contrary, when the ratchet pawl assembly When the outer ratchet rotates forward at a certain angle, the pawl will be clamped in the slot of the outer ratchet and the tooth shape of the inner ratchet, and enter normal operation.

The worm gear assembly is located in the middle of the output sleeve. In order to ensure that the mechanism can transmit power, the inner ratchet in the second ratchet pawl assembly is further provided with a keyway for fixing to the output sleeve.

One end of the output sleeve is mounted with a sprocket, and the other end is equipped with a first ratchet pawl assembly for implementing pedal driving, that is, the transmission shaft is simultaneously used as a pedal shaft, and the ratchet pawl assembly is simultaneously mounted. On the drive shaft. The first ratchet pawl assembly includes an outer ratchet and a pawl, the pawl being mounted on the drive shaft, that is, the drive shaft simultaneously serving as a pawl seat of the ratchet pawl assembly, the outer ratchet and There is a threaded connection between the output sleeves. The transmission device used in the above combined power unit and the electric assist bicycle includes a casing, a transmission shaft and a sprocket, and the transmission shaft is provided with an output sleeve, and the sprocket is fixedly mounted at one end of the output sleeve. The output sleeve is further arranged side by side with a planetary gear shifting mechanism, a worm gear assembly and a second ratchet pawl assembly for realizing direct drive of the motor, wherein the planetary gear shifting mechanism comprises a ring gear and teeth The ring is provided with a sun wheel, a planet carrier and a planetary gear, and the outer ratchet of the sun wheel and the second ratchet pawl assembly are respectively mounted on both sides of the worm wheel of the worm gear assembly, the ring gear of the planetary gear shifting mechanism Fixedly mounted in the housing, the inner ratchet of the second ratchet pawl assembly is mounted on the output sleeve; the planet carrier is further provided with a small pawl for driving the motor speed reduction gear, and the planet carrier passes through the The small pawl is connected to the output sleeve, and the housing is further provided with a shifting shaft. The shifting shaft is provided with a pawl disengaging mechanism for disengaging the pawl of the second ratchet pawl assembly from the ratchet. By connecting the worm of the worm gear assembly to the coupling of the motor, the motor can be driven, and by adding a planetary shifting mechanism, The function of reducing drive and increasing torque is added, which greatly facilitates the user.

The second ratchet pawl assembly includes an outer ratchet, an inner ratchet, a pawl and a pawl seat, the pawl seat is floatingly mounted on the output sleeve by a bearing, and the "floating" means when the pawl is disengaged When it comes into contact with the inner and outer ratchets, it is not driven by the inner and outer ratchets. The pawl is mounted on the pawl seat and simultaneously contacts the inner and outer ratchets.

The pawl disengaging mechanism may be a pawl disengaging the pulling arm, and a rotatable top plate is disposed on the inner side wall of the casing, and the top plate is connected with the pawl from the pulling arm, that is, the pawl is disengaged from the pulling arm. The top plate can be rotated by an angle, the top plate is provided with a convex point; the top plate is further provided with a conical ring, the two are arranged concentrically, and the conical ring is provided with a position of a convex point on the top plate Corresponding recesses, in a normal state, the pits on the tapered ring abut against the raised points of the top plate; the outer surface of the pawl of the second ratchet pawl assembly is further provided with a raised point. The invention can adopt an automatic shifting mechanism. When the load of the motor is large to a certain limit, when the set program rotates the shifting shaft by a small angle, the pawl is disengaged from the dialing arm to drive the top plate to rotate a small angle, at this time, the top plate The raised points can be detached from the pits, that is, the tapered ring is pushed up by the raised points on the top plate, and the tapered ring is pressed against the convex points on the two pawls, thereby separating the pawls from the inner and outer ratchets. The contact, output sleeve and sprocket are disconnected from the direct drive relationship with the motor. The pawl disengaging mechanism may further be a pawl disengaging cam, and two shaft pins are disposed on the inner side wall of the casing, and the two shaft pins are respectively movably mounted with an arc clamp, two The recesses of the arc-shaped clamps are opposite to each other, the axle pin is located at an upper portion of the arc-shaped clamp, and an opening is provided between the upper ends of the two clamps and between the lower ends; the pawl is fixedly mounted on the cam a shifting shaft and an opening between the upper ends of the two clamps; the shaft pin is further provided with a spring for opening the opening between the lower ends of the two clamps, in the normal state, the two The opening between the lower ends of the clamps is in the open position by the action of the spring, and the pawls of the second ratchet pawl assembly are in contact with the inner and outer ratchets to realize direct drive of the motor; when the set program is automatically changed When the shifting shaft of the gear mechanism rotates a small angle, the pawl disengages from the cam and rotates with the shifting shaft, so that the two clamps swing around the respective axle pins by a small angle, and the opening between the upper ends of the two clamps becomes larger, the lower end The opening between the two becomes smaller, that is, the clamp is in the running state The two pawls, so that the pawl is out of contact with the inner and outer ratchets, the pawl seat and the pawl stop rotating under the clamping of the clamp, and the output sleeve and the sprocket are disengaged from the direct gear transmission relationship with the motor. .

When the second ratchet pawl assembly is in the direct drive of the motor, the sun gear of the planetary shifting mechanism fixed to one side of the worm wheel continues to rotate with the worm wheel, and the planet carrier of the planetary shifting mechanism is driven by the sun gear Next, the rotation speed is lower than the worm wheel of the worm gear assembly, and the output sleeve is driven by the small pawl on the planet carrier, and the transmission mechanism enters the reduction gear transmission. In the second ratchet pawl assembly, the inner contour of the outer ratchet and the outer contour of the inner ratchet are zigzag, One end of the pawl is clamped in the tooth shape of the outer ratchet, and the other end is clamped on the tooth shape of the inner ratchet.

The sun gear of the planetary gear shifting mechanism and the outer ratchet of the second ratchet pawl assembly are respectively concentrically arranged and fixedly coupled to the worm wheel of the worm gear assembly.

The transmission device used in the above combined power unit and the electric assist bicycle includes a casing, a pedal shaft and a sprocket, and the pedal shaft is provided with an output sleeve, and the sprocket is fixedly mounted at one end of the output sleeve. The other end of the output sleeve is mounted with a first ratchet pawl assembly for implementing the pedal drive, and the ratchet pawl assembly is simultaneously mounted on the pedal shaft; the output sleeve is also mounted with a planar jaw on the side a clutch, a worm gear assembly and a second ratchet pawl assembly for driving the motor, the ratchet of the second ratchet pawl assembly is opposite to the sprocket; the planar jaw clutch and the first The ratchet pawl assemblies are adjacent to each other, including a fixed jaw panel, a movable jaw panel and a fork, the fixed jaw panel being fixed to the worm wheel of the worm gear assembly, and the movable jaw panel is movably mounted on the output The sleeve is movably mounted in the housing; and is sleeved on the outer circumference of the movable jaw.

When the worm of the worm gear assembly is connected with the coupling of the motor, the motor can be driven. When the vehicle is in normal driving, the fixed jaw plate and the movable jaw are separated. Since the pedal shaft and the output sleeve are connected by a ratchet mechanism of the one-way transmission, the output sleeve does not drive the pedal shaft to rotate, so that the electric drive and the pedal drive can be mutually interfered, and the two can be input separately or simultaneously. power. Normally, the fixed dental panel is separated from the movable dental panel. When the shifting fork is moved laterally, the movable dental panel is engaged with the fixed dental panel, and the worm wheel is driven to rotate while driving the output sleeve, thereby driving Motor power generation.

The housing is provided with a shiftable fork shaft which is parallel to the pedal shaft. The fork is fixed on the fork shaft, and the fork portion of the fork is sleeved on the outer circumference of the movable jaw.

A spline sleeve is further disposed between the movable jaw plate and the output sleeve, and the movable jaw panel is sleeved on the spline sleeve, and the spline sleeve and the output sleeve are connected by a flat key. The movable dental panel can be moved on the spline sleeve under the action of pulling the fork to achieve the engagement or separation with the fixed dental panel. The first ratchet pawl assembly provided at the end of the output sleeve includes an outer ratchet and a pawl, and the pawl is mounted on the pedal shaft, that is, the pedal shaft simultaneously serves as a pawl seat, and the outer ratchet One end is fitted on the pedal shaft, that is, it is matched with the pawl, and the other end is screwed with the output sleeve. The transmission device used in the above combined power unit and the electric assist bicycle includes a casing, a transmission shaft and a sprocket, wherein the transmission shaft is provided with an output sleeve, and the sprocket is fixedly mounted at one end of the output sleeve. The other end of the output sleeve is mounted with a first ratchet pawl assembly for pedal driving, and the ratchet pawl assembly is simultaneously mounted on the drive shaft; the output sleeve is also mounted with a worm gear side by side. And used to achieve motor drive a second ratchet pawl assembly, the second ratchet pawl always becoming a steerable two-way ratchet pawl assembly comprising an outer ratchet, a pawl and a pawl seat, the second ratchet pawl assembly The outer ratchet is arranged side by side with two sets of forward and reverse tooth forms, and the pawl seat is provided with two sets of forward and reverse pawls for forward and reverse directions on the outer ratchet The tooth type is engaged. When the transmission mechanism is running forward, the forward pawl can transmit power from the outer ratchet to the pawl seat in one direction, and the reverse pawl can transmit power in one direction from the pawl seat to the outer ratchet. The pawl seat is further provided with a sliding ring which can be moved laterally, wherein the housing is provided with a shiftable fork shaft and a shifting fork, and the fork is fixedly mounted on the fork shaft, and the fork of the fork The movable part of the movable part is on the outer circumference of the sliding ring, that is, the sliding ring can move with the lateral movement of the fork, so that switching the second ratchet pawl always becomes three working modes: the reverse pawl is separated from the outer ratchet The realized motor-driven vehicle mode, the vehicle drive motor mode in which the reverse pawl drives the outer ratchet, and the disengagement relationship mode realized by the forward pawl and the reverse pawl simultaneously disengaging from the outer ratchet. The outer surfaces of the two sets of pawls provided on the pawl seat of the second ratchet pawl assembly are provided with convex points, and when the sliding ring moves laterally, the positive and negative sides can be respectively contacted or simultaneously a convex point to the outer surfaces of the two sets of pawls; a pawl seat of the second ratchet pawl assembly is further provided with a key groove fixedly connected with the output sleeve. The first ratchet pawl assembly provided at the end of the output sleeve includes an outer ratchet and a pawl, and the pawl is mounted on the drive shaft, that is, the drive shaft simultaneously serves as a pawl of the ratchet pawl assembly. The outer ratchet has one end that cooperates with the pawl and the other end is threadedly connected to the output sleeve. The transmission mechanism of the special worm and the roller worm wheel used in the above transmission device comprises a worm and a roller worm wheel, and the roller worm wheel comprises a worm wheel body and a roller assembly, and the roller assembly is evenly distributed on the circumference of the worm wheel body The surface is mounted in a corresponding receptacle; the worm includes a worm body and a helical rectangular groove track formed around the worm body, the track pitch being fixed and adapted to the trajectory of the roller assembly. The invention adopts the roller assembly to replace the worm gear teeth in the prior art, and cooperates with the worm track, so that the whole movement process is changed from the conventional sliding friction to the rolling friction, and the transmission efficiency is greatly improved.

The roller assembly includes a screw that is mounted at one end in the socket, a bearing that is sleeved on the screw, and a bolt that tightens the other end of the screw and axially fixes the bearing to the screw.

The roller assembly includes a roller shaft that is installed at one end in the insertion hole, a bearing that is sleeved on the roller shaft, and a circlip that is caught in the annular groove at the other end of the roller shaft. Fixed on the roller shaft.

The structure of the roller assembly of the invention is relatively simple, and overcomes the deficiencies caused by the large-scale wear of the worm wheel teeth on the track surface of the worm for a long time in the conventional technology, and prolongs the service life of the worm wheel.

The bearing is a needle bearing or a ball bearing. The worm is rotated with at least two rollers The assembly is simultaneously engaged. When the worm is rotating, the distribution interval of the roller assembly on the circumferential surface of the worm wheel body is matched with the worm track pitch, so that the worm and the worm wheel can be continuously driven to ensure the normal operation of the transmission mechanism. Compared with the prior art, the present invention has the following remarkable effects:

1. Compared with the prior art, through the different combinations of positions between the four modules of the power combination unit and the cooperation with the vehicle body, on the one hand, the car body is beautified, on the other hand, the production raw materials are saved, and the production is reduced. Cost of production.

2. The price of each component module of the power combination unit is relatively low, and the production process is relatively simple, the production efficiency can be greatly improved, and the output is greatly increased, which satisfies the actual needs of consumers.

3. Through different combinations of four modules and various interchangeable external connection ports that are compatible with the vehicle body, manufacturers can easily design a variety of models of different sizes and styles.

4. Consumers can make their own choices, and transform the models that meet their own ideas by disassembling and combining the four modules and the car body.

5, using a variety of structure of the transmission device, can achieve separate motor drive, single pedal drive, motor and pedal combined drive, deceleration drive, pedal drive to drive the motor to generate electricity, the vehicle drives the motor to generate electricity to charge the battery when going downhill Features. DRAWINGS

The invention will be further described in detail below with reference to the drawings and specific embodiments.

1-1 is a schematic structural view of a power combination unit according to the present invention, in which case four modules are compactly combined into one body; FIG. 1-2 is a schematic view of the overall assembly of the power combination unit of the present invention;

1-3 are schematic diagrams showing electrical connections between a battery module, a controller module, and a motor module in the power combination unit of the present invention;

FIG. 1 is a schematic structural view of a contact electric pile for performing electrical connection in a power combination unit according to the present invention; FIG.

1-5 is a schematic structural view of Embodiment 1 of the electric assist bicycle according to the present invention, in which the power combination unit is arranged in a horizontal position;

1-6 are schematic structural diagrams of Embodiment 2 of the electric assist bicycle according to the present invention, in which the power combination unit is arranged vertically;

1-7 is a schematic structural view of a third embodiment of the electric assist bicycle according to the present invention, in which the battery module is separated from the power combining unit.

Figure 2-1 is a cross-sectional view of the dual input worm gear transmission;

Figure 2-2 is a cross-sectional view of the ratchet pawl assembly at the end of the output sleeve mated with the pedal shaft; Figure 2-3 is a perspective view of the ratchet pawl assembly at the end of the output sleeve; Figure 2-4 is a BB cross-sectional view of the ratchet pawl assembly in the middle of the output sleeve; Figure 2-5 is a perspective view of the pawl seat of Figures 2-4;

Figure 2-6 is a perspective view of the ratchet of Figures 2-4.

Figure 3-1 is a cross-sectional view of the worm gear mechanism with the pawl disengagement mechanism;

Figure 3-2 is a cross-sectional view taken along line C-C of the first ratchet pawl assembly and the drive shaft;

Figure 3-3 is a perspective view of the ratchet pawl assembly of the first ratchet pawl;

Figure 3-4 is a cross-sectional view taken along the line D-D of the second ratchet pawl assembly in the neutral position of Figure 3-1;

Figure 3-5 is a cross-sectional view taken along the line D-D of the second ratchet pawl assembly of Figure 3-1;

3-6 is a perspective view of the ratchet seat of the second ratchet pawl assembly.

Figure 4-1 is a cross-sectional view of the worm gear transmission with the planetary shifting mechanism when the pawl disengagement mechanism is the pawl disengaged from the pull arm;

Figure 4-2 is a cross-sectional view taken along the line E-E of the first ratchet pawl assembly and the pedal shaft;

Figure 4-3 is a perspective view of the ratchet pawl assembly of the first ratchet pawl;

Figure 4-4 is a cross-sectional view taken along the line F-F of the second ratchet pawl assembly of the speed reduction gear of Figure 4-1;

Figure 4-5 is a cross-sectional view taken along the line F-F of the second ratchet pawl assembly of the direct gear of Figure 4-1;

4-6 is an exploded perspective view of the second ratchet pawl assembly of FIG. 4-1;

Figure 4-7 is an exploded perspective view of the top plate, the tapered ring and the pawl seat of Figure 4-1;

Figure 4-8 is a cross-sectional exploded view of the top plate and the tapered ring of Figure 4-1;

Figure 4-9 is an exploded perspective view of the planetary gear mechanism of Figure 4-1;

4-10 is a cross-sectional view of the worm gear transmission with a planetary shifting mechanism when the pawl disengagement mechanism is a pawl disengaged from the cam;

4-11 are cross-sectional views of the second ratchet pawl assembly of FIGS. 4-10 when entering the deceleration gear; FIG. 4-12 is the GG direction of the second ratchet pawl assembly of FIGS. 4-10 when entering the direct gear. Cross-sectional view; Figure 4-13 is an exploded perspective view of the second ratchet pawl assembly and the clamp mechanism of Figures 4-10. Figure 5-1 is a cross-sectional view of the transmission structure that can be selectively switched to the pedal-driven motor;

Figure 5-2 is an exploded view of the planar jaw clutch structure that can be selectively switched to the transmission structure of the pedal-driven motor.

Figure 6-1 is a cross-sectional view of a transmission structure that can be selectively switched to a vehicle-driven motor;

Figure 6-2 is an exploded perspective view of the fork, the slip ring, the positive and reverse pawl mechanisms of Figure 6-1;

Figure 7-1 is a schematic structural view of an embodiment of a transmission mechanism using a special worm and a roller worm gear;

Figure 7-2 is an overall assembly view of the roller worm gear of the embodiment of Figure 7-1. detailed description

As shown in FIG. 1-1 to FIG. 1-5, the power unit module combined electric assist bicycle of the present invention comprises a vehicle body and a power combination unit 11 which is connected to the vehicle body as a main body part of the vehicle body structure. . The power combination unit 11 includes a transmission case 12 having a transmission mechanism therein, a DC permanent magnet motor 13 for driving the transmission mechanism, a battery pack 14 composed of a closed battery case 111 having a built-in rechargeable battery disposed in the battery holder 112, and The controller 15 controls four modules of the vehicle speed drive, and each of the four modules has a casing, and the contact poles 16 at the lower end of the battery holder 112 are respectively leaded or electrically connected to the corresponding interface contacts 124 of the controller 15 by contacts. The output shaft of the DC permanent magnet motor 13 extends into the motor base 17 of the transmission case 12 and is connected to the transmission mechanism inside the transmission case 12; the end of the battery pack 14 is connected to the controller 15 On one side of the mounting box, the other side of the controller 15 mounting box is in close contact with the transmission case 12, and a power indicator 18 and a charging socket 19 are mounted on the top of the battery pack 14, and the battery indicator 18 can display the rechargeable battery. The size of the battery is convenient for the rider to grasp the remaining power. The battery pack 14 housing cover 110 is spliced on the mounting box of the controller 15, and after the top cover 110 is hit, Battery box 111 to take place, so that the battery pack 111 from the battery holder 112 and the contact electrical pegs 16, the battery holder 112 is attached to the upper end of the battery lock 122, lock 123 is attached to power controller 15 on the lid. The DC permanent magnet motor 13 is placed close to the battery pack 14 and the controller 15, and the output shaft of the DC permanent magnet motor 13 extends into the motor base 17 at the lower end of the transmission case 12. In the present embodiment, the power combination unit 11 is arranged horizontally, the end of the battery holder 112 is connected to the front support rod 113, and the upper side of the controller 15 housing and the transmission case 12 is fastened by the fastening member 114. The lower end of the saddle riser 115, the left rear fork plate and the right rear fork plate 117 are respectively hinged on the gearbox 12 and at the housing portions of the two output ends 116 thereof, and the fastening member 114 on the casing of the transmission case 12 A shock absorber spring 119 is connected between the left rear fork plate and the right rear fork plate 117 to form a suspension rear fork, which can achieve a more effective shock absorbing effect and enhance the rider's comfort when encountering a bumpy road section. The embodiment shown in Figures 1-6 differs from the embodiment shown in Figures 1-1 to 1-5 in that the power combination unit 11 is arranged upright, the end of the battery holder 112 and the lower end of the body saddle riser 115. Connected, the lower portion of the outer casing of the controller 15 is coupled to the front portion of the vehicle body, and the housing portions of the two output ends of the outer casing of the transmission case 12 and the fixing member 120 connecting the saddle riser 115 are connected to the triangular left and right rear fork plates. . The embodiment shown in FIGS. 1-7 differs from the embodiment shown in FIGS. 1-1 to 1-5 in that the battery pack 14 is separated from the combination of the power combination unit 11 and is separately fixed to the vehicle body rear frame 121. The transmission case 12, the DC permanent magnet motor 13 and the controller 15 are integrally fixed to the lower part of the vehicle body, wherein the upper part of the controller mounting box is fixedly connected to the front part of the vehicle body, and the fastening bolts on both sides of the transmission housing are fixedly connected to the left and right rear fork plates 117. Controller 15 mounting box One side is closely integrated with the transmission case 12, and the DC permanent magnet motor 13 is attached to the rear of the mounting body of the controller 15 and connected to the transmission case 12. The output shaft of the DC permanent magnet motor 13 extends into the lower end of the transmission case 12. The motor base 17 is connected to a transmission mechanism inside the transmission case 12.

The power output from the contact electric pile 110 at the lower end of the battery pack 14 via the electric wire is respectively connected to the power supply interface of the controller 15 and the DC permanent magnet motor 13, thereby driving the output shaft of the DC permanent magnet motor 13 to rotate, and thereby driving the transmission case 12 The internal transmission mechanism operates.

An induction element is arranged on the transmission shaft of the power combination unit, and the pedal element speed is induced by the induction element, and the signal is transmitted to the controller to control the starting and working state of the motor, thereby realizing the pure power function of the electric assist bicycle. Of course, in the use of the above-mentioned power combination unit, a vehicle speed control knob can also be provided on the handlebar, and the lower end of the controller leads to the handlebar, thereby realizing the control of the vehicle speed.

The battery holder is a rigid body that should have a strong bearing capacity, and the power combination unit is a part of the body composition. After that, the force is relatively large, so the material of the battery holder can be selected from a metal such as stainless steel.

In addition to the various arrangements of the combined power unit in the above embodiments, the present invention can be modified on other different electric assist bicycles according to actual conditions, and can also be used in small electric vehicles (such as three-wheel and four-wheel electric vehicles, etc.). Various variants are made on the body of the car.

The interior of the power combination unit as the main body of the frame is bilaterally symmetrical so that its arrangement on the vehicle body can be arranged in a forward direction or in a reverse direction, which can still maintain a normal state for the vehicle as a whole.

The front end, the rear end or the upper end of the power combination unit can be provided with engaging members for connecting with the vehicle body. These combined components can facilitate the power combination unit to match different styles of the front, rear fork plate and saddle, etc., to meet different The installation of the style car body is easy to assemble into various models of different styles and sizes.

The power combination unit can be used to select different speed ratios to form different speed reduction mechanisms or shifting mechanisms to match different vehicle sizes and different vehicle types. For example, a power combination unit mounted on a three- or four-wheel electric vehicle can select a transmission module that is simple without a pedal function, or a transmission without a differential speed or a transmission module with a differential mechanism.

In the power unit module combined electric assist bicycle, the worm gear transmission structure is used to realize the power transmission, and the output shaft is provided on the transmission shaft, the sprocket is fixedly mounted at one end of the output sleeve, and the output sleeve is also mounted for realizing the motor. The driven worm gear assembly, the worm gear of the worm gear assembly and the worm are matched, and the worm gear is set on the output sleeve. As shown in FIG. 2-1 to FIG. 2-6, a worm gear transmission device for realizing dual input in a power unit modular electric assist bicycle includes a housing 28, a pedal shaft 29 and a sprocket 27, and a pedal shaft 29 An output sleeve 26 is mounted thereon, and the output sleeve 26 is supported in the housing 28 by two bearings 214, and one end of the output sleeve 26 projects out to the housing 28, and the sprocket 27 is fixedly mounted on the extended end. The other end of the output sleeve 26 is fixedly mounted with a first ratchet pawl assembly for implementing pedal drive, the ratchet pawl assembly includes a mating ratchet 211 and a pawl 210, and the ratchet 211 is an outer ratchet. A part of the ratchet 211 is screwed with the output sleeve 26, and another part of the ratchet 211 is fitted on the pedal shaft 29. The pawl 210 is mounted on the pedal shaft 29, that is, the pedal shaft 29 is used as a pawl seat; The middle portion of the cylinder 26 is also mounted side by side with a worm gear assembly and a second ratchet pawl assembly for driving the motor. The worm gear assembly includes an engaged worm 21 and a worm gear 22, and the ratchet pawl assembly includes a ratchet 23, Pawl 24 and pawl seat 25, spine 23 is an outer ratchet, the ratchet 23 is opposite to the sprocket 27, and the inner wall of the pawl seat 25 is further provided with a key groove 212 for fixing with the output sleeve 26, and the worm wheel 22 and the ratchet 23 are arranged concentrically, both of which are provided A mounting hole 213 perpendicular to the disk surface is fixed by bolts therebetween. The housing 28 of the transmission mechanism is divided into two halves and is formed by lateral butting. The longitudinal axis of the worm gear assembly and the longitudinal axis of the output sleeve 26 are both located at the seam of the two halves of the housing 28.

The working process of the double input worm gear transmission is as follows:

motor driven:

The motor shaft is connected to the worm 21 through the coupling, the motor is started, the motor shaft rotates, the worm 21 drives the worm wheel 22 to rotate forward, and the ratchet 23 associated with the worm wheel 22 drives the pawl seat 25 to rotate by the pawl 24, and the spine The output sleeve 26, which is connected to the claw seat 25 via the key groove 212, rotates in synchronization with the worm wheel 22, and outputs power to the sprocket 27. At this time, since the pedal shaft 29 and the output sleeve 26 are connected by the ratchet mechanism of the one-way transmission, the output sleeve 26 does not drive the pedal shaft 29 to rotate.

Foot drive:

When the motor stops, and the pedal shaft 29 rotates forward due to the rider pedaling the pedal, the pawl 210 drives the ratchet wheel 211 to rotate forward, and the ratchet wheel 211 and the output sleeve 26 are screwed into one body, and the output sleeve 26 is thus The power output is obtained, and the power is output to the sprocket 27.

Dual input driver:

The above motor drive and pedal drive simultaneously input power, and the action process is the same as above: the motor shaft drives the output sleeve

26 rotation, and the output sleeve 26 at this time does not drive the pedal shaft 29 to rotate; at the same time, the pedal pedal drives the pedal shaft

29 rotation, further driving the output sleeve 26 to rotate.

As shown in Figure 3-1 to Figure 3-6, one is used in a power unit module combined electric assist bicycle. The worm gear transmission device of the pawl disengagement mechanism comprises a housing 310, a transmission shaft 311 and a sprocket 38. The transmission shaft 311 is provided with an output sleeve 37. The housing 310 is divided into two halves and is laterally butted, and the output sleeve is formed. One end of the 37 extends beyond the housing 310, and the sprocket 38 is fixedly mounted at the end of the extended end. The output sleeve 37 is also mounted side by side with a worm gear assembly and a second ratchet pawl assembly for driving the motor. The worm gear assembly is located in the middle of the output sleeve, and the second ratchet pawl assembly includes the outer ratchet 33. , an inner ratchet 36 and a pawl seat 35 provided with a pawl 34, wherein the inner ratchet 36 is mounted on the output sleeve 37, the outer ratchet 33 is opposite the sprocket 38, and the outer ratchet 33 and the worm gear of the worm gear assembly 32 is arranged concentrically, and the outer ratchet 33 and the worm wheel 32 are respectively provided with mounting holes 314 perpendicular to the disk surface thereof, and are fixed by bolts therebetween, and the inner ratchet wheel 36 of the second ratchet pawl assembly is further provided with A keyway that is fixed to the output sleeve 37. In the second ratchet pawl assembly, a plurality of two sets of pawl slots are arranged symmetrically on the inner contour of the outer ratchet 33. Each set of pawl slots includes two small card slots 315 separated by two small card slots. The dividing strip 316 between the 315 is wedge-shaped to facilitate the disengagement of the pawl 34 or the locking action. One end of the pawl 34 is clamped in one of the small slots 315, and the other end of the pawl 34 is clamped to the inner ratchet. 36 is provided on the tooth profile; the pawl seat 35 is floatingly mounted on the output sleeve 37 via a bearing 317, and the inner wall of the housing 310 is further provided with an elastic pressure roller 39 for enhancing damping, and the elastic pressure roller 39 is located on the spine The claw seat 35 is above and pressed against the outer circumferential surface of the pawl holder 35. The other end of the output sleeve 37 opposite the mounting sprocket 38 is mounted with a first ratchet pawl assembly for achieving pedal drive, the first ratchet pawl assembly including an outer ratchet 313 and a pawl 312, pawl 312 Mounted on the drive shaft 311, the drive shaft 311 serves as a pedal shaft, and also serves as a pawl seat of the ratchet pawl assembly. The outer ratchet 313 and the output sleeve 37 are screwed. The working process is as follows - motor drive: When the motor rotates, the motor shaft drives the worm gear 31 through the coupling to rotate the worm gear 32 forward, and the outer ratchet wheel 33 mounted on the worm wheel 32 drives the inner ratchet wheel 36 through the pawl 34, since the inner ratchet 36 is directly Mounted on the output sleeve 37, the output sleeve 37 drives the vehicle forward through the sprocket 38 and the chain.

Off the drive:

Due to the inner contour design of the outer ratchet 33 of the second ratchet pawl assembly, when the outer ratchet 33 is rotated rearward by a small angle, the two pawls 34 are depressed, causing the pawl 34 to disengage from the inner ratchet 36. Contact, so the drive system is off. The elastic pinch roller 39 on the outer circumference of the pawl seat 35 can damp the floating pawl seat 35 to maintain the disconnected state of the transmission system. At this time, the output sleeve 37 and the sprocket 38 are in a free state, and the vehicle can be dragged back and forth without being restrained by the worm wheel 32, but at this time the vehicle It can still be driven by the pedal. When the motor drive is resumed, the worm wheel 32 rotates forward together with the outer ratchet 33. According to the shape of the inner contour of the outer ratchet 33, the two depressed pawls 34 are first released, and the outer ratchet 33 is restored to the inner ratchet 36. Acting on the transmission. Foot drive:

The pedal drive is not affected by the motor drive or "disengagement". The pedal power can be input while the motor is being driven, or "disengaged from the drive", because the drive shaft 311 is passed through its own ratchet 313, pawl 312. The operation of the output sleeve 37 and the sprocket 38 is not affected by the above "disengagement".

In the above embodiments, in order to cooperate with the design of the present invention, a digital circuit control system can be added to the whole vehicle, and the control system can be designed as follows: When the transmission system is required to be disconnected, the motor has a brief transient reversal. The function is to achieve a disengagement of the transmission system by rotating the outer ratchet 33 rearward by a small angle. As shown in FIG. 4-1 to FIG. 4-9, a worm gear transmission with a planetary shifting mechanism in a power unit modular electric assist bicycle includes a housing 416, a transmission shaft 420 and a sprocket 419. The housing 416 is divided into two halves and is laterally butted. One end of the output sleeve 48 protrudes out of the housing 416. The transmission shaft 420 is provided with an output sleeve 48. The sprocket 419 is fixedly mounted on the output sleeve 48. At the end of the projecting end, the output sleeve 48 is also mounted side by side with a planetary gear shifting mechanism, a worm gear assembly and a second ratchet pawl assembly for driving the direct drive of the motor. The worm gear assembly is located at the output sleeve 48. In the middle portion, the planetary gear shifting mechanism includes a ring gear 46. The ring gear 46 is provided with a sun gear 43, a carrier 45 and a planetary gear 44. The planetary gear 44 is mounted on the carrier 45, and simultaneously with the sun gear 43 and the ring gear 46. In engagement, the planet carrier 45 and the output sleeve 48 are also connected by two small pawls 47 for driving the motor speed reduction gear, so that the output sleeve 48 and the sprocket 419 can follow the planet carrier 45 to be lower than the worm gear. 42 speed output power. The second ratchet pawl assembly includes an outer ratchet 412, an inner ratchet 413, a pawl 414, and a pawl seat 415. The pawl seat 415 is floatingly mounted on the output sleeve 48 by a bearing 425, and the pawl 414 is mounted on the pawl seat At 415, and simultaneously with the inner and outer ratchets 413, 412, the sun gear 43 of the planetary gear shifting mechanism, the outer ratchet wheel 412 of the second ratchet pawl assembly, and the worm gear 42 of the worm gear assembly are vertically disposed. The mounting holes on the disk surface are concentrically arranged, and the sun gear 43 and the outer ratchet wheel 412 are fixed to both sides of the worm wheel 42 by bolts. In the second ratchet pawl assembly, the inner contour of the outer ratchet 412 and the outer contour of the inner ratchet 413 are both zigzag, and one end of the pawl 414 is clamped in the tooth shape of the outer ratchet 412, and the other end is clamped therein. The tooth shape of the ratchet 413 is on. The ring gear 46 of the planetary gear shifting mechanism is fixed to the side wall of the housing 416 by bolts; the inner ratchet wheel 413 of the second ratchet pawl assembly is further provided with a key groove, and is fixedly connected with the output sleeve 48. A shifting shaft 49 is further disposed in the housing 416. The shifting shaft 49 is parallel to the transmission shaft 420. The shifting shaft 49 is provided with a pawl 414 for the second ratchet pawl assembly and inner and outer ratchets 413 and 412. The detached pawl disengages from the mechanism, In this embodiment, the pawl disengagement mechanism is a pawl disengagement arm 411, and a rotatable annular top plate 417 is further disposed on the inner side wall of the housing 416, and the top plate 417 is provided with three long holes for mounting bolts. 429, the top plate 417 is movably mounted on the inner side wall of the housing 416 by three bolts 430. The top plate 417 can be rotated at an angle along the trajectory of the three long holes 429 centering on the axis of the drive shaft 420, and the top plate 417 is separated from the pawl. The pulling arm 411 is connected, that is, the pawl is disengaged from the pulling arm 411 to drive the top plate 417 to rotate. The semi-spherical convex points 426 are evenly distributed on the annular disk surface of the top plate 417 to function as a cam; the top plate 417 is further provided with a tapered ring 418, which are arranged concentrically, and the tapered ring 418 is provided with three The hemispherical raised points 426 are located corresponding to the three dimples 428. The tapered ring 418 is also movably mounted on the outer side of the top plate 417 by three bolts 430, that is, the tapered ring 418 is located between the top plate 417 and the outer ratchet 412, and the tapered ring The opening on the side of the 428 facing the outer ratchet 412 is a small outer small tapered surface. Normally, the three recesses 428 of the tapered ring 418 abut against the three hemispherical raised points 426 of the top plate 417. The outer surfaces of the two pawls 414 of the second ratchet pawl assembly are also provided with raised points 427. One end of the output sleeve 48 is mounted with a sprocket 419, and the other end is mounted with a first ratchet pawl assembly for implementing pedal drive. The drive shaft 420 is simultaneously used as a pedal shaft, and the first ratchet pawl assembly is coupled to the planetary gear shifting mechanism. Adjacent, including the outer ratchet 422 and the pawl 421, the pawl 421 is mounted on the drive shaft 420, that is, the drive shaft 420 serves as a pawl seat of the ratchet pawl assembly, and the outer ratchet 422 and the output sleeve 48 are threaded. connection.

The working process is as follows:

1. Direct drive motor drive:

The motor shaft drives the worm 41 to rotate the worm wheel 42 and the outer ratchet 412 simultaneously, and the inner ratchet 413 is driven by the pawl 414 to drive the output sleeve 48 and the sprocket 419 to form a power output. At this time, the sun gear 43 of the planetary gear shifting mechanism drives the carrier 45 to rotate at a lower speed than the worm wheel 42 through the planetary gear 44. Since the rotation speed of the carrier 45 is lower than the rotation speed of the output sleeve 48, the carrier 45 has small pawls. The one-way effect of 47 is idling.

2. Reducer motor drive

In this embodiment, an automatic shifting mechanism is adopted. When the set program causes the shifting shaft 49 of the automatic shifting mechanism to rotate an angle from the direct shifting position, the pawl on the shifting shaft 49 is disengaged from the shifting arm 411 to make the top plate. The 417 is rotated a small angle, and the three raised points 426 on the top plate 417 are disengaged from the dimples 428, that is, the tapered ring 418 is lifted by the three hemispherical convex points 426 of the top plate 417, thereby pushing the tapered ring 418. To the raised point 427 on the two pawls 414, the two pawls 414 are depressed by the tapered surface in the tapered ring 418, causing the pawl 414 to disengage from the contact between the outer ratchet 412 and the inner ratchet 413, thereby disengaging the worm gear 42. The output sleeve 48 is associated with the output sleeve 48 and the sprocket 419 from the transmission relationship with the motor. At this time, the state of the planetary gear shifting mechanism is: The sun gear 43 is input with the rotation of the worm wheel 42 and is fixed. The ring gear 46 forces the planet carrier 45 to rotate with the sun gear 43. According to the principle of the planetary gear transmission, its rotational speed is lower than that of the sun gear 43, the planet The frame 45 drives the output sleeve 48 and the sprocket 419 through the small pawl 47 to follow the carrier 45 to output power at a lower speed than the worm wheel 42.

3. Foot drive Since the ratchet mechanism of one-way transmission is provided between each part of the transmission device and the output sleeve 48, the electric drive and the pedal drive can be separately or simultaneously input with power, pedaling The input is the direct transmission of the drive shaft 420 to the output sleeve 48 through the pawl 421 and the ratchet 422. Without passing through the planetary mechanism, it is not affected by the gear position, and is always a 1:1 output power. 4-10 to 4-13 show different embodiments of a worm gear transmission with a planetary shifting mechanism, which is different from the embodiment shown in the previous FIGS. 4-1 to 4-9. The claw disengaging mechanism is a pawl disengagement cam 434, and the second ratchet pawl assembly is brought into a disengaged state by using a clamp type mechanism: two shaft pins 431 are disposed on the inner side wall of the housing 416, and the two shaft pins 431 are arranged at a height The two shaft pins 431 are respectively movably mounted with an arc-shaped clamp 433. The arc-shaped recesses of the two-arc type clamp 433 are opposite, the shaft pin 431 is located at an upper portion of the arc-shaped clamp 433, and the upper end of the two clamps 433 is An opening is provided between the middle and the lower end, and the pawl disengagement cam 434 is fixedly mounted on the shift shaft 49 and located at an opening between the upper ends of the two clamps 433. The rotation of the pawl disengagement cam 434 causes the two clamps 433. The opening between the upper ends becomes larger or smaller, so that the two clamps 433 are swung around the respective shaft pins 431, and the shaft pin 431 is further provided with a spring that allows the opening between the lower ends of the two clamps 433 to be opened. 432, in the normal state, the opening between the lower ends of the two clamps 433 is The spring 432 is in the open position. At this time, the pawl 414 of the second ratchet pawl assembly is in contact with the inner and outer ratchets 413, 412, that is, one end of the pawl 414 is inwardly engaged with the inner ratchet 413, and One end faces outwardly and cooperates with the outer ratchet 412 to realize direct drive of the motor, and a small gap is left between the inner surface of the clamp 433 and the outward end of the pawl 414; the lower end of each clamp 433 is also long. The hole 435, the clamp 433 is movably mounted on the outer ratchet 412 through the elongated hole 435 and the screw 436, which ensures that the clamp 433 can smoothly swing around the shaft pin 431, and can effectively limit the displacement of the clamp 433.

When the set program causes the shifting shaft 49 of the automatic shifting mechanism to rotate by an angle, the pawl disengagement cam 434 rotates with the shifting shaft 49, pushing the left and right grippers 433 to swing toward each other at the same time around the respective axle pins 431. At a small angle, since the opening between the upper ends of the two clamps 433 becomes larger, the gap between the lower ends becomes smaller, and the inner surface of the clamp 433 exerts pressure on the pawls 414, that is, the clamps 433 are in the running state. The two pawls 414 disengage the pawl 414 from the inner and outer ratchets 413, 412, thereby disengaging the worm gear 42 from the output sleeve 48, i.e., in a disengaged state. When the automatic shifting mechanism returns the shifting shaft 49 to the initial position, the opening between the lower ends of the left and right clamps 433 is returned to the open position by the action of the spring 432, so that the two pawls 414 are restored to the outside. The contact of the ratchet 412 with the inner ratchet 413 returns the transmission to the direct drive motor drive state.

As shown in FIG. 5-1 and FIG. 5-2, a transmission device that can be selectively switched to a pedal-driven motor in a power unit modular electric assist bicycle includes a housing 56, a pedal shaft 57 and a sprocket 510, the pedal shaft 57 is provided with an output sleeve 55. The housing 56 is divided into two halves and is laterally butted. One end of the output sleeve 55 protrudes out of the housing 56, and the sprocket 510 is fixedly mounted on the output sleeve. At the end of the projecting end of the 55, the other end of the output sleeve 55 is mounted with a first ratchet pawl assembly for implementing the pedal drive, including the outer ratchet 58 and the pawl 59, and the pawl 59 is mounted on the pedal shaft 57, The pedal shaft 57 serves as a pawl holder at the same time, and one end of the outer ratchet 58 is fitted on the pedal shaft 57, that is, mated with the pawl 59, and the other end is screwed with the output sleeve 55. The output sleeve 55 is also mounted side by side with a planar jaw clutch and a worm gear assembly and a second ratchet pawl assembly for driving the motor, including a ratchet 514, a pawl 515 and a pawl seat 516, the ratchet 514 being The outer ratchet is opposite to the sprocket 510. The inner wall of the pawl seat 516 is also provided with a keyway for fixing to the output sleeve 55, and the worm wheel 52 and the ratchet 514 are concentrically arranged and fixedly connected. The worm gear assembly is located in the middle of the output sleeve 55 and includes a worm 511 and a worm gear 512 that are engaged. The flat jaw clutch includes a fixed jaw 51, a movable jaw 52 and a fork 53. The fixed jaw 51 and the worm wheel 512 are provided with mounting holes perpendicular to the disk surface, and are fixed by bolts therebetween. The housing 56 is provided with a laterally movable fork shaft 513 which is parallel to the pedal shaft 57. The fork 53 is fixedly mounted on the fork shaft 513, and the fork portion 531 of the fork 53 is sleeved outside the movable jaw 52. On the circumference. A spline sleeve 54 is further disposed between the movable jaw 52 and the output sleeve 55. The movable jaw 52 is movably fitted on the spline sleeve 54. The inner surface of the spline sleeve 54 is provided with a key groove and an output sleeve. The cartridges 55 are connected by a flat key, and the movable jaw 52 can be laterally moved on the spline sleeve 54 under the action of the dialing movement 53 to achieve the engagement or separation with the fixed jaw panel 51. An urging push-pull lever is provided on the outside of the housing 56 to push or pull the fork shaft 513 laterally, and the fork 53 moves laterally with the movement of the fork shaft 513.

The working process is as follows:

When the worm 511 of the worm gear assembly of the present invention is connected to the coupling of the motor, the motor can be driven. When the vehicle is normally driven, the fixed jaw 51 and the movable jaw 52 are separated. At this time, the motor drive and the pedal drive do not interfere with each other, and the electric drive or the pedal drive can drive normally, or both can simultaneously input power. When the shifting fork 53 is laterally moved, the movable jaw 52 is engaged with the fixed jaw 51, and the worm wheel 512 is driven to rotate while driving the output sleeve 55, thereby driving the motor to generate electricity. At this time, the rider steps When the pedal is actuated, the pedal shaft 57 drives the output sleeve 55 through the pawl 59 and the outer ratchet 58 to drive the worm 511 and the motor. The rider can change the resistance of the load connected to the motor through the circuit system, and the resistance of the pedal can be changed to achieve the required fitness strength. In the above embodiment, the fork shaft can also be designed to work by rotation: the mating hole between the fork shaft and the fork is machined into a threaded engagement of a large pitch. The fork shaft is used as a screw and the fork is used as a nut. When the fork shaft is rotated, the fork as a nut moves laterally, and the fork shaft can only be rotated and cannot be moved laterally.

As shown in FIG. 6-1 and FIG. 6-2, a transmission device for realizing power generation by a vehicle-driven motor to charge a battery in a power unit modular electric assist bicycle includes: a housing 61, a transmission shaft 62, and a chain The pulley 63 is divided into two halves and is laterally butted. The transmission shaft 62 is provided with an output sleeve 64. One end of the output sleeve 64 projects out of the housing 61, and the sprocket 63 is fixedly mounted on the output sleeve. At the end of the projecting end of the cylinder 64, the other end of the output sleeve 64 is mounted with a first ratchet pawl assembly for pedal driving, that is, the drive shaft 62 serves as a pedal shaft at the same time; the first ratchet pawl assembly includes the outer The ratchet 614 and the pawl 615, the pawl 615 is mounted on the drive shaft 62, that is, the drive shaft 62 serves as the pawl seat of the ratchet pawl assembly. One end of the outer ratchet 614 cooperates with the pawl 615, and the other end and the output The sleeves 64 are connected by threads.

The output sleeve 64 is also mounted side by side with a worm gear assembly and a second ratchet pawl assembly for motor drive. The worm gear assembly is located in the middle of the output sleeve 64 and includes a worm gear 65 and a worm 66. The second ratchet pawl is always a steerable two-way ratchet pawl assembly including an outer ratchet 67, a positive pawl 68, and a counter. To the pawl 69 and the pawl seat 610, the worm wheel 65 is fastened to the outer ratchet 67. The outer ratchet 67 is arranged side by side with a forward tooth 616 and a reverse tooth 617 two-ring serrated teeth. The forward pawl 68 and the reverse pawl 69 mounted on the pawl seat 610 are used for the outer ratchet 67, respectively. The upper positive tooth 616 and the reverse tooth 617 are engaged, the forward tooth 616 is disposed on the side adjacent to the worm wheel 65 in the outer ratchet 67, and the reverse tooth 617 is disposed on the other side; the forward pawl 68 and the reverse The outer surface of the pawl 69 is provided with a convex point; the pawl base 610 is further provided with a key groove fixedly connected with the output sleeve 64. A laterally movable sliding ring 611 is movably mounted outside the pawl seat 610. The housing 61 is further provided with a laterally movable fork shaft 612 and a shifting fork 613. One end of the shifting fork 613 is fixedly mounted on the fork shaft 612. The other end of the shift fork 613, that is, the fork type movable sleeve is disposed on the outer circumference of the slide ring 611, and the slide ring 611 can move along with the lateral movement of the shift fork 613, and the slide ring 611 can be respectively or simultaneously with the forward pawl 68. The raised points of the reverse pawl 69 are in contact. The working process is as follows:

By connecting the worm 66 of the worm gear assembly of the present invention to the coupling of the motor, the motor can be driven to drive normally; the sliding ring 611 is in contact with the convex point of the reverse pawl 69, that is, the sliding ring 611 will be reversed. When the pawl 69 is depressed, the reverse pawl 69 is disengaged from the outer ratchet 67. At this time, the motor shaft drives the worm 66 to rotate the worm wheel 65 and the outer ratchet 67 simultaneously, and the outer ratchet 67 drives the pawl seat 610 and the output sleeve through the forward pawl 68. The barrel 64 and the sprocket 63 form a power output. When the vehicle speed is greater than the speed of the worm gear 65 driven by the motor, the vehicle can slide forward due to the characteristic of the one-way transmission of the forward pawl 68.

Downhill power generation: the steering fork shaft 612 disengages the sliding ring 611 from the convex point of the reverse pawl 69, that is, the reverse pawl 69 is released, and the contact of the outer ratchet 67 is restored; the sprocket 63 is driven by the sliding of the vehicle, The output sleeve 64 and the pawl base 610, the pawl base 610 drives the reverse pawl 69 to drive the outer ratchet 67, and the worm gear 65 fixedly connected with the outer ratchet 67 drives the worm 66 and the motor shaft to realize the rotation of the motor by the vehicle, through the electric circuit. The switching, that is, the motor generates electricity and charges the battery.

Neutral coasting: Manipulating the fork shaft 612 moves the slip ring 611 to a position that simultaneously contacts the raised points of the forward pawl 68 and the reverse pawl 69, i.e., the slip ring 611 will be the forward pawl 68 and the reverse pawl 69. At the same time, the positive pawl 68 and the reverse pawl 69 are simultaneously disengaged from the outer ratchet 67, that is, the output sleeve 64 and the sprocket 63 are disengaged from the worm gear assembly, and the vehicle is completely disengaged from the motor. When the vehicle is connected, the vehicle can slide in the neutral position, or the first ratchet pawl assembly can be driven by the pedal to realize the pedal driving.

The transmission device for realizing power generation by the vehicle-driven motor and charging the battery according to the embodiment can also be combined with the planetary gear shifting mechanism described in the foregoing embodiment, and can be jointly applied to the power unit module combined electric assist bicycle. In the power unit in which the planetary gear shifting mechanism and the vehicle-driven motor power generating mechanism are simultaneously provided, the shift fork shaft 612 is operated such that the slide ring 611 simultaneously contacts the convex points of the forward pawl 68 and the reverse pawl 69 to make the forward and reverse directions The two sets of pawls are simultaneously separated from the external ratchet 67, that is, the vehicle is driven away from the direct drive of the motor, and enters the state of the motor-driven planetary gear shifting mechanism to realize the motor reduction gear drive.

Foot drive: Since each part of the transmission and the output sleeve 64 are provided with a one-way transmission ratchet pawl mechanism, during normal driving, the reverse pawl 69 is disengaged from the contact with the outer ratchet 67, The power can be input separately or simultaneously at the same time between the drive and the pedal drive. When the vehicle reverses the motor for power generation, since the output sleeve 64 and the transmission shaft 62 are unidirectionally connected through the pawl 615 of the first ratchet pawl assembly and the ratchet 614, the output sleeve 64 does not drive the transmission. The shaft 62 follows the rotation. As shown in FIG. 7-1 and FIG. 7-2, the transmission mechanism of the special worm and the roller worm wheel used in the above various transmission devices includes a worm 71 and a roller worm wheel 72, and the roller worm wheel 72 includes a worm wheel body 73, The bearing 74, the roller shaft 75 and the retaining spring 77 are evenly distributed on the circumferential end surface of the worm wheel body 73 with a plurality of insertion holes 710 into which one end of the roller shaft 75 is inserted, and the bearing 74 is fitted to the roller shaft 75. The other end of the roller shaft 75 has an annular groove 76. The retaining spring 77 is caught in the annular groove 76, and the bearing 74 is axially fixed to the roller shaft 75 so that the bearing 74 does not disengage from the roller shaft 75. Axial out. The worm 71 includes a worm body 79 and a spiral rectangular groove track 78 formed around the worm body 79. The spiral rectangular groove track 78 is machined using a special machine tool according to the principle of development, and has a fixed pitch and a bearing 74. The trajectory of the movement is adapted. In order to ensure the continuity of the transmission, the rectangular groove track 78 is simultaneously meshed with at least two bearings 74 at any time during the rotation of the worm 71, otherwise the worm wheel 71 may fluctuate or even be interrupted. This in turn affects the power output.

The roller shaft 75 can be changed into a screw. The circlip 77 can be changed into a bolt. One end of the screw is inserted into the socket 710, the bearing 74 is sleeved on the screw, the bolt is screwed onto the other end of the screw, and the bearing 74 is axially fixed to the screw. On, prevent it from coming out axially.

In addition, the bearing 74 can adopt various types of bearings, such as a needle bearing and a ball bearing, and can also adopt a hydraulic bearing or the like, and can also achieve the purpose of the sliding friction of the present invention as rolling friction and improving transmission efficiency. The various transmission devices in the above embodiments can be widely applied to various electric bicycles such as bicycles, tricycles, four-wheel drive vehicles, and scooters. The embodiments of the present invention are not limited thereto, and various other forms of modifications may be made according to the above-mentioned contents of the present invention in accordance with the ordinary technical knowledge and conventional means of the present invention without departing from the basic technical idea of the present invention. Replace or change.

Claims

Rights request

1. A modular combined power unit, comprising: four modules, respectively a transmission module having a transmission mechanism therein, a DC permanent magnet motor module for driving the transmission mechanism, and a built-in closed battery box disposed on the battery a battery module formed in the seat and a controller module for starting the motor and controlling the vehicle speed driving, wherein the contact electric pile of the battery module is electrically connected to the corresponding electric pile on the controller module and the DC permanent magnet motor module; The output shaft of the DC permanent magnet motor module extends into the motor housing of the transmission module and is connected to the transmission mechanism inside the transmission module.

2. The modular combination power unit according to claim 1, wherein: the four modules are integrally assembled and connected, and one side of the transmission module housing is provided with a controller box integrated with the transmission module housing. The controller module is placed in the box body, and one end of the battery module is fixedly connected to one side of the box body, the DC permanent magnet motor module is close to the battery module, and is fixedly connected to the motor housing of the transmission module, the DC permanent magnet motor The output shaft of the module extends into the motor housing of the drive module and is connected to the drive mechanism inside the drive module.

3. The modular combined power unit according to claim 1, wherein: the transmission module, the DC permanent magnet motor module and the controller module are integrally assembled and connected, and one side of the transmission module housing is provided with a transmission module. The controller is integrated into the controller box, the controller module is placed in the box body, the DC permanent magnet motor module is fixedly connected to the motor housing of the transmission module, and the output shaft of the DC permanent magnet motor module extends into the motor of the transmission module Inside the seat, and connected to the transmission mechanism inside the transmission module; the built-in rechargeable battery module is separated from the three modules integrally connected, and the battery modules are respectively electrically connected to the power supply interface of the controller module and the DC permanent magnet motor module via wires .

The modular combination power unit according to claim 1 or 2 or 3, wherein: the top of the battery case is provided with a power indicator and a charging socket, and the outer cover of the battery module is hingedly connected to the controller. On the side of the box, a power lock is arranged on the cover of the controller box.

An electric assist bicycle using the combined power unit according to claim 1, comprising a vehicle body, characterized in that a power combination unit is provided on the vehicle body, and the power combination unit is connected to the vehicle body as a main body portion of the vehicle body structure.

6. The electric assist bicycle according to claim 5, wherein: said power combination unit is a horizontal arrangement; the end of the battery module is fixedly connected to the front support rod of the vehicle body, the top of the casing of the transmission module is fixed by the fastening component to the lower end of the saddle riser, and the housing parts of the transmission module at the two output ends respectively The left and right rear fork plates are hinged; a suspension spring is disposed between the fastening component of the transmission module housing and the left and right rear fork plates.

7. The electric assist bicycle according to claim 5, wherein: the power combination unit is arranged in an upright position; the end of the battery module is fixedly coupled to a lower end of the body saddle riser, and the vehicle body is fixed below the transmission module housing In the front section, the housing parts of the two output ends of the transmission module housing and the fixing members connected to the saddle riser jointly fix the triangular left and right rear fork plates.

The electric assist bicycle according to claim 5, wherein: the power combination unit is separately arranged; the upper part of the controller module case is fixedly connected to the front part of the vehicle body, and the fastening bolts on both sides of the transmission module housing are fixedly connected. The left and right rear fork plates are separately fixed to the rear frame of the vehicle body.

9. A transmission as claimed in claim 1 or 5, comprising a housing, a drive shaft and a sprocket, wherein said drive shaft is provided with an output sleeve, said sprocket being fixedly mounted to the output sleeve At one end of the cylinder, a worm gear assembly for driving the motor is mounted on the output sleeve. The worm gear of the worm gear assembly is matched with a worm, and the worm wheel is set on the output sleeve.

A transmission device as claimed in claim 1 or 5, comprising a housing, a pedal shaft and a sprocket, wherein the pedal shaft is provided with an output sleeve, and the sprocket is fixedly mounted on the output One end of the sleeve, the other end of the output sleeve is mounted with a first ratchet pawl assembly for implementing pedal driving, and the ratchet pawl assembly is simultaneously mounted on the pedal shaft; the output sleeve is also side by side Installed with a worm gear assembly and a second ratchet pawl assembly for driving the motor, the ratchet of the ratchet pawl assembly is opposite the sprocket, and the worm gear of the worm gear assembly and the ratchet pawl adjacent thereto The ratchets are arranged concentrically and fixedly connected.

11. A transmission according to claim 10 wherein said worm gear assembly and a second ratchet pawl assembly fixedly coupled thereto are located in the middle of the output sleeve.

12. The transmission device according to claim 11, wherein the second ratchet pawl assembly in the middle of the output sleeve comprises a ratchet, a pawl and a pawl seat, and the inner wall of the pawl seat is further provided There are keyways for fixing to the output sleeve.

13. The transmission of claim 10 wherein said output sleeve end is provided with a threaded connection between the ratchet of the first ratchet pawl assembly and the output sleeve.

The transmission device according to claim 10 or 11, wherein the ratchet wheel of the second ratchet pawl assembly in the middle of the output sleeve and the worm wheel of the worm gear assembly are perpendicular to the disk surface thereof. Mounting holes, which are bolted together.

15. The transmission device according to claim 10, wherein the housing is divided into two halves and is laterally butted, one end of the output sleeve projects out of the housing, and the sprocket is fixedly mounted on The end of the extended end.

16. The transmission of claim 10 wherein said first ratchet pawl assembly at the end of the output sleeve includes a ratchet and a pawl, the two of which cooperate, said ratchet being an outer ratchet A part of the ratchet is threadedly connected to the output sleeve, and another part of the ratchet is fitted on the pedal shaft; the pawl is mounted on the pedal shaft, that is, the pedal shaft is used as a pawl seat.

17. The transmission of claim 14 wherein said second ratchet pawl assembly centrally located in the output sleeve includes a ratchet, a pawl and a pawl seat, said ratchet being an outer ratchet The inner wall of the pawl seat is also provided with a keyway for fixing to the output sleeve.

18. A transmission as claimed in claim 1 or 5, comprising a housing, a drive shaft and a sprocket, wherein said drive shaft is provided with an output sleeve, said sprocket being fixedly mounted to the output sleeve At one end of the cylinder, the output sleeve is further mounted side by side with a worm gear assembly and a second ratchet pawl assembly for driving the motor, the ratchet pawl assembly including an outer ratchet, an inner ratchet and a spine a pawl seat of the claw, wherein the inner ratchet is mounted on the output sleeve, the outer ratchet is opposite to the sprocket, and the outer ratchet is concentrically arranged and fixedly connected with the worm wheel of the worm gear assembly.

19. The transmission device according to claim 18, wherein in the second ratchet pawl assembly, a plurality of sets of pawl slots are arranged symmetrically on the outer ratchet, and each set of pawl slots comprises Two spaced apart small card slots, one end of the pawl is clamped in one of the small card slots, and the other end of the pawl is clamped on the tooth shape provided on the inner ratchet; the pawl seat The bearing sleeve is floatingly mounted on the output sleeve, and the inner wall of the housing is further provided with an elastic pressure roller for enhancing damping, and the elastic pressure roller is located above the pawl seat and is pressed against the pawl seat.

20. A transmission according to claim 19 wherein said worm gear assembly is located in the middle of the output sleeve.

21. The lever transmission of claim 18, wherein the inner ratchet of the second ratchet pawl assembly is further provided with a keyway for securing the output sleeve.

22. The transmission of claim 18, wherein one end of the output sleeve is mounted with a sprocket and the other end is mounted with a first ratchet pawl assembly for pedal actuation, the drive shaft At the same time, it acts as a pedal shaft, and the first ratchet pawl assembly is simultaneously mounted on the drive shaft.

23. The transmission of claim 22 wherein said first ratchet pawl assembly includes an outer ratchet and a pawl, said pawl being mounted on a drive shaft, said outer ratchet and output Threaded connections between the sleeves.

The transmission device according to claim 18 or 21, wherein the ratchet wheel of the second ratchet pawl assembly and the worm wheel of the worm gear assembly are provided with mounting holes perpendicular to the disk surface thereof, Secured by bolts between.

The transmission device according to claim 18, wherein the housing is divided into two halves and is laterally butted, one end of the output sleeve protrudes out of the housing, and the sprocket is fixedly mounted on The end of the extended end.

26. A transmission as claimed in claim 1 or 5, comprising a housing, a drive shaft and a sprocket, wherein said drive shaft is provided with an output sleeve, said sprocket being fixedly mounted to the output sleeve At one end of the cylinder, the output sleeve is further mounted side by side with a planetary gear shifting mechanism, a worm gear assembly and a second ratchet pawl assembly for realizing direct drive of the motor, wherein the planetary gear shifting mechanism includes a a ring gear, a sun gear, a planet carrier and a planetary gear are arranged in the ring gear, and the outer ratchets of the sun gear and the second ratchet pawl assembly are respectively mounted on two sides of the worm wheel of the worm gear assembly, and the planetary gear shifting The ring gear of the mechanism is fixedly mounted in the housing, and the inner ratchet of the second ratchet pawl assembly is mounted on the output sleeve; the planet carrier is further provided with a small pawl for driving the motor speed reduction gear. The planet carrier is connected to the output sleeve through the small pawl, and the housing is further provided with a shifting shaft, and the shifting shaft is provided with a pawl that can disengage the pawl of the second ratchet pawl assembly from the ratchet mechanism.

27. The transmission of claim 26 wherein said second ratchet pawl assembly comprises an outer ratchet, an inner ratchet, a pawl and a pawl seat, said pawl seat being mounted floatingly by bearings On the output sleeve, the pawl is mounted on the pawl seat and simultaneously contacts the inner and outer ratchets.

28. The transmission of claim 27, wherein the pawl disengagement mechanism is a pawl disengagement arm, and a rotatable top plate, a top plate and a spine are provided on an inner side wall of the housing The claws are connected to the pull-out arm, and the top plate is provided with a convex point; the top plate is further provided with a tapered ring, which are arranged concentrically; the tapered ring is provided with a position of a convex point on the top plate Corresponding pits, the pits on the cone ring are in close contact with the top plate The raised surface is further provided with a raised point on the outer surface of the pawl of the second ratchet pawl assembly.

29. The transmission device according to claim 28, wherein the top plate is provided with an elongated hole for mounting a bolt, and the top plate is movably mounted on the inner side wall of the casing by bolts, that is, the top plate can be along The trajectory of the long hole is rotated; the top plate is annular, and three hemispherical convex points are evenly distributed on the annular disk surface, and the tapered ring is provided with three corresponding positions of the three hemispherical convex points. The dimples are also mounted on the outside of the top plate by the above-mentioned bolts.

30. The transmission of claim 27, wherein the pawl disengagement mechanism is a pawl disengagement cam, and two axle pins are provided on the inner side wall of the housing, the two The shaft pin is respectively movably mounted with an arc-shaped clamp, and the notches of the two arc-shaped clamps are opposite; the shaft pin is located at an upper portion of the arc-shaped clamp, and the upper end and the lower end of the two clamps are disposed between An opening; the pawl disengagement cam is fixedly mounted on the shifting shaft and located at an opening between the upper ends of the two clamps, that is, the rotation of the pawl disengaging the cam causes the two clamps to swing around the respective axle pins; The shaft pin is further provided with a spring that allows the opening between the lower ends of the two clamps to be in an open state.

The transmission device according to claim 26 or 27, wherein in the second ratchet pawl assembly, the inner contour of the outer ratchet and the outer contour of the inner ratchet are zigzag, and one end of the pawl The clamp is in the tooth shape of the outer ratchet, and the other end is clamped on the tooth shape of the inner ratchet.

32. A transmission according to claim 26 or 27 or 28 or 29 or 30, wherein said worm gear assembly is located in the middle of the output sleeve, said inner ratchet in said second ratchet pawl assembly There is also a keyway for securing to the output sleeve.

33. A transmission according to claim 26 or 27 or 28 or 29 or 30, wherein said output sleeve has a sprocket mounted on one end and a first ratchet pawl on the other end for pedal actuation The drive shaft is simultaneously used as a pedal shaft, and the ratchet pawl assembly is simultaneously mounted on the drive shaft.

34. The transmission of claim 33, wherein said first ratchet pawl assembly comprises an outer ratchet and a pawl, said pawl being mounted on a drive shaft, said outer ratchet and output Threaded connections between the sleeves.

35. The transmission of claim 26, wherein the outer wheel of the sun gear of the planetary gear shifting mechanism and the second ratchet pawl assembly are concentrically disposed and fixedly coupled to the worm gear of the worm gear assembly, respectively.

36. A transmission as claimed in claim 1 or 5, comprising a housing, a pedal shaft and a sprocket, characterized in that said pedal shaft is provided with an output sleeve, said sprocket being fixedly mounted on the output sleeve One end of the cylinder, the other end of the output sleeve is mounted with a first ratchet pawl assembly for implementing pedal driving, and the ratchet pawl assembly is simultaneously mounted on the pedal shaft; the output sleeve is also mounted side by side a planar jaw clutch, a worm gear assembly and a second ratchet pawl assembly for driving the motor, the ratchet of the second ratchet pawl assembly being opposite to the sprocket; The clutch is adjacent to the first ratchet pawl assembly, including a fixed jaw panel, a movable jaw panel and a fork, the fixed jaw panel being fixed to the worm gear of the worm gear assembly, the movable jaw panel The movable body is mounted on the output sleeve, and the fork is movably mounted in the housing and is sleeved on the outer circumference of the movable jaw.

37. The transmission device according to claim 36, wherein the housing is provided with a laterally movable fork shaft parallel to the pedal shaft, the fork is fixed on the fork shaft, and the fork portion of the fork The sleeve is placed on the outer circumference of the movable dental panel.

38. The transmission device of claim 37, wherein a spline sleeve is disposed between the movable jaw and the output sleeve, and the movable jaw panel is sleeved on the spline sleeve, The spline sleeve and the output sleeve are connected by a flat key.

39. The transmission of claim 38, wherein the first ratchet pawl assembly provided at the end of the output sleeve includes an outer ratchet and a pawl, the pawl being mounted on the pedal shaft That is, the pedal shaft simultaneously serves as a pawl seat, and one end of the outer ratchet cooperates with the pawl, and the other end is screwed with the output sleeve.

40. The transmission of claim 36 or 39 wherein said worm gear assembly includes a worm and a worm gear that are engaged in the middle of the output sleeve.

The transmission device according to claim 40, wherein the fixed jaw plate of the planar jaw clutch and the worm wheel of the worm gear assembly are provided with mounting holes perpendicular to the disk surface thereof, Secured by bolts.

42. The transmission device according to claim 41, wherein the housing is divided into two halves and is laterally butted, one end of the output sleeve projects out of the housing, and the sprocket is fixedly mounted on The end of the extended end.

43. A transmission as claimed in claim 1 or 5, comprising a housing, a drive shaft and a sprocket, characterized An output sleeve is disposed on the transmission shaft, the sprocket is fixedly mounted at one end of the output sleeve, and the other end of the output sleeve is mounted with a first ratchet pawl assembly for implementing pedal driving, and The ratchet pawl assembly is simultaneously mounted on the drive shaft; the output sleeve is further mounted side by side with a worm gear assembly and a second ratchet pawl assembly for driving the motor, the second ratchet spine The pawl is always a steerable two-way ratchet pawl assembly including an outer ratchet, a pawl and a pawl seat, and the outer ratchet is arranged side by side with forward and reverse sets of teeth on the inner circumference of the outer ratchet There are two sets of forward and reverse pawls for respectively engaging with the forward and reverse tooth forms on the outer ratchet; the pawl seat is further provided with a laterally movable sliding ring, in the casing a shifting fork shaft and a shifting fork are arranged, the fork is fixedly mounted on the fork shaft, and the fork-shaped portion of the fork is arranged on the outer circumference of the sliding ring, that is, the sliding ring can be used The shifting fork moves laterally, so that switching the second ratchet pawl always becomes Three modes of operation are motor-driven vehicles, vehicle drive motors, and off-drive relationships.

The transmission device according to claim 43, wherein the outer surfaces of the two sets of the positive and negative pawls provided on the pawl seat of the second ratchet pawl assembly are provided with convex points, sliding When the ring moves laterally, the convex points of the outer surfaces of the two sets of pawls can be respectively touched separately or simultaneously; the pawl seat of the second ratchet pawl assembly is further provided with a key groove, and is fixedly connected with the output sleeve .

45. The transmission of claim 43, wherein the first ratchet pawl assembly provided at the end of the output sleeve includes an outer ratchet and a pawl, the pawl being mounted on the drive shaft That is, the drive shaft serves as a pawl seat of the ratchet pawl assembly at the same time, and one end of the outer ratchet cooperates with the pawl, and the other end is screwed with the output sleeve.

46. A transmission mechanism using a special worm and roller worm gear according to claim 9, 10, 18, 26 or 36, comprising a worm and a roller worm gear, characterized in that: said roller worm gear comprises a worm gear body and a roller combination The roller assembly is evenly distributed on a circumferential surface of the worm wheel body and mounted in a corresponding socket; the worm includes a worm body and a spiral rectangular groove track formed around the worm body, the track pitch is fixed and The trajectory of the roller assembly is adapted.

47. A transmission mechanism using a special worm and roller worm wheel according to claim 46, wherein: said roller assembly comprises a screw having one end mounted in the socket, a bearing and a bolt mounted on the screw, The bolt tightens the other end of the screw and secures the bearing axially to the screw.

48. A transmission mechanism using a special worm and roller worm wheel according to claim 46, wherein: said roller assembly comprises a roller shaft having one end mounted in the insertion hole and a bearing mounted on the roller shaft. And stuck in the roller A circlip in the annular groove at the other end of the shaft, the circlip fixing the bearing axially on the roller shaft.

49. A transmission mechanism using a special worm and roller worm gear according to claim 47 or 48, wherein: said bearing is a needle bearing or a ball bearing.

50. A transmission mechanism using a special worm and roller worm gear according to claim 46, wherein: said worm shaft rotates at least simultaneously with the two roller assemblies.

51. A transmission mechanism using a special worm and roller worm gear according to claim 49, wherein: said worm shaft has a grooved track that simultaneously meshes with at least two bearings while rotating.