One-way clutch and motorcycle

Abstract

The one-way clutch comprises an outer ring, a support assembly and a pin roller, the outer ring is provided with a containing hole, the end, close to a placing opening, of the containing hole is provided with a sinking groove communicated with the containing hole, and the diameter of the sinking groove is gradually reduced in the direction close to the containing hole; the pressing disc comprises an upper pressing plate, a lower pressing plate and an elastic support, the elastic support is located between the upper pressing plate and the lower pressing plate, the upper end and the lower end of the elastic support are connected with the upper pressing plate and the lower pressing plate respectively, an installation space is defined between the upper pressing plate and the lower pressing plate, and the pin rollers are installed in the installation space. Friction convex claws and elastic convex claws which extend towards the outer side are annularly distributed on the outer edge of the upper end of the upper pressing plate at intervals, and when the support assembly is installed in the containing hole, the elastic convex claws and the friction convex claws abut against the groove bottom of the sinking groove. The eccentricity existing between the upper pressing plate and the lower pressing plate can be effectively corrected, the concentricity of the upper pressing plate and the lower pressing plate after assembly is ensured, and abrasion of the elastic support and the inner ring is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a one-way clutch and a motorcycle. Background Art

[0002] A clutch is used to realize the transmission or separation between a driving device and a driven device. The clutch generally includes an outer ring, a bracket assembly, a driven gear, and a plurality of rollers. The bracket is arranged between the outer ring and the driven gear. The rollers are arranged between the upper and lower pressing plates of the bracket assembly and are located in the U-shaped clamping openings formed by the elastic brackets. When the rotational speed of the driven gear is greater than that of the outer ring, the rollers abut against and rub against the transmission part of the driven gear, thereby driving the outer ring to rotate to achieve transmission; when the rotational speed of the outer ring is greater than that of the driven gear, the rollers do not abut against the transmission part of the driven gear and are separated, and no power is transmitted to achieve separation.

[0003] At present, the bracket assembly in the clutch generally includes an upper pressing plate, a lower pressing plate, and an elastic bracket. The upper pressing plate is connected to the lower pressing plate through the elastic bracket to form an integral body, and then the whole is installed in the outer ring. However, due to the non-concentric situation when the upper pressing plate is connected to the lower pressing plate, it is easy to cause wear of the elastic bracket and the transmission part of the driven gear, resulting in a shortened service life. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a one-way clutch and a motorcycle.

[0005] In a first aspect, an embodiment of the present application provides a one-way clutch, including:

[0006] An outer ring, which is provided with a receiving hole penetrating through the outer ring in the vertical direction. One end of the receiving hole close to the insertion port is provided with a sinking groove communicated with the receiving hole, and the diameter of the sinking groove gradually decreases in the direction close to the receiving hole;

[0007] A bracket assembly, which includes an upper pressing plate, a lower pressing plate, and an elastic bracket. The elastic bracket is located between the upper pressing plate and the lower pressing plate, and the upper end of the elastic bracket is connected to the upper pressing plate, and the lower end of the elastic bracket is connected to the lower pressing plate, so that the upper pressing plate and the lower pressing plate are connected to form an integral body, and an installation space is defined between the upper pressing plate and the lower pressing plate;

[0008] A plurality of rollers, which are annularly installed in the installation space in sequence and are located outside the elastic bracket, and the upper end and the lower end of the roller respectively abut against the upper pressing plate and the lower pressing plate;

[0009] Among them, the outer edge of the upper pressing plate is annularly and spacedly distributed with friction claws and elastic claws extending outward. The length of the elastic claws extending outward is greater than that of the friction claws. When the bracket assembly is inserted into the accommodating hole, both the elastic claws and the friction claws are in contact with the bottom of the counterbore.

[0010] In an embodiment, the inner edge of the upper end of the upper pressing plate is annularly and spacedly distributed with first clamping blocks extending inward, and the inner edge of the lower end of the lower pressing plate is annularly and spacedly distributed with second clamping blocks extending inward. The second clamping blocks and the first clamping blocks are offset.

[0011] The elastic bracket includes a plurality of U-shaped springs connected end to end in sequence. The U-shaped spring has a first bayonet, and a second bayonet is formed between adjacent U-shaped springs.

[0012] Among them, when the elastic bracket is assembled with the upper pressing plate and the lower pressing plate, the first bayonet is clamped with the first clamping block, and the second bayonet is clamped with the second clamping block.

[0013] In an embodiment, the inner edge of the lower end of the lower pressing plate extends with a bent block bent downward. A through space is formed between the bent block and the second clamping block, and the lower end of the U-shaped spring passes through the through space.

[0014] In an embodiment, the width of the friction claw is greater than that of the elastic claw, and the lengths of both the first clamping block and the second clamping block are less than the thickness of the U-shaped spring.

[0015] In an embodiment, the friction claw includes a first connecting section and a first extending section connected into one body. One end of the first connecting section away from the first extending section is connected to the outer edge of the upper end of the upper pressing plate, and the first section extends obliquely upward along the outside. An included angle of more than 90° is formed between the first connecting section and the first extending section.

[0016] In an embodiment, the included angle is between 110° and 145°.

[0017] In an embodiment, the elastic claw includes a second connecting section and a second extending section connected into one body. One end of the second connecting section away from the second extending section is connected to the outer edge of the upper end of the upper pressing plate, and the second connecting section extends obliquely upward along the outside. An included angle of more than 90° is formed between the second connecting section and the second extending section.

[0018] In an embodiment, the included angle is between 110° and 145°.

[0019] In one embodiment, it further includes a driven gear. A transmission part extends upward from the middle of the driven gear. The transmission part extends into the accommodation hole and passes through the lower pressing plate and the upper pressing plate.

[0020] Wherein, when the driven gear drives to rotate and its rotational speed is greater than that of the outer ring, the roller abuts against the transmission part to drive the outer ring to rotate; when the rotational speed of the driven gear is less than that of the outer ring, the roller disengages from the abutment with the transmission part.

[0021] In a second aspect, an embodiment of the present application further provides a motorcycle, including the overrunning clutch described in the first aspect.

[0022] The overrunning clutch provided by the embodiment of the present application has the following beneficial effects compared with the prior art:

[0023] The elastic bracket is used to connect the upper pressing plate and the lower pressing plate into an integral body. Then, the assembled upper pressing plate and lower pressing plate are inserted into the accommodation hole from the insertion port. Since a sinking groove is provided at one end of the accommodation hole close to the insertion port, the elastic claws provided at the outer edge of the upper end of the upper pressing plate always abut against the inner wall of the sinking groove. As it continuously penetrates into the accommodation hole and the sinking groove is trapezoidal in reverse, the elastic claws are continuously squeezed to apply an inward acting force to the upper pressing plate, so that the eccentricity existing between the upper pressing plate and the lower pressing plate can be effectively corrected, ensuring the concentricity of the upper pressing plate and the lower pressing plate after assembly, and avoiding wear of the elastic bracket and the transmission part of the driven gear. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of an overrunning clutch of the present application;

[0025] Figure 2 is an exploded schematic diagram of an overrunning clutch of the present application;

[0026] Figure 3 is an exploded schematic diagram of a bracket assembly and a roller in an overrunning clutch of the present application;

[0027] Figure 4 is a schematic structural diagram of a bracket assembly in an overrunning clutch of the present application;

[0028] Figure 5 is a cross-sectional schematic diagram of an overrunning clutch of the present application;

[0029] Figure 6 is Figure 5 an enlarged schematic diagram of part A in

[0030] Figure 7 is a cross-sectional schematic diagram of an overrunning clutch in the prior art;

[0031] Figure 8 Yes Figure 7 It is an enlarged schematic view of part B in

[0032] Reference numerals in the figure:

[0033] 10. Outer ring; 10a. Accommodating hole; 10b. Groove; 20. Bracket assembly; 21. Upper pressing plate; 21a. Elastic claw; 21b. Friction claw; 21c. First clamping block; 22. Elastic bracket; 22a. U-shaped spring; 23. Lower pressing plate; 23a. Second clamping block; 23b. Bent block; 30. Roller; 40. Driven gear; 40a. Transmission part; 50. Penetrating space; d. First included angle; f. Second included angle. Detailed implementation manners

[0034] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings and are constructed and operated in a specific orientation. This is only for the convenience of describing the present technical solution and does not indicate that the indicated device or element must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0035] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0036] Please refer to Figures 1 to 6 In this application embodiment, a one-way clutch is provided. The one-way clutch includes an outer ring 10, a bracket assembly 20, and a plurality of rollers 30. The outer ring 10 is provided with an accommodating hole 10a penetrating the outer ring in the vertical direction. One end of the accommodating hole 10a close to the insertion port is provided with a groove 10b communicating with the accommodating hole 10a, and the diameter of the groove 10b gradually decreases in the direction close to the accommodating hole 10a. The bracket assembly 20 includes an upper pressing plate 21, a lower pressing plate 23, and an elastic bracket 22. The elastic bracket 22 is located between the upper pressing plate 21 and the lower pressing plate 23, and the upper end of the elastic bracket 22 is connected to the upper pressing plate 21, and the lower end of the elastic bracket 22 is connected to the lower pressing plate 23, so that the upper pressing plate 21 and the lower pressing plate 23 are connected to form an integral body, and an installation space is defined between the upper pressing plate 21 and the lower pressing plate 23. The plurality of rollers 30 are sequentially installed in the installation space in a ring shape and are located outside the elastic bracket 22, and the upper and lower ends of the rollers 30 are respectively abutted against the upper pressing plate 21 and the lower pressing plate 23.

[0037] Among them, on the outer edge of the upper pressing plate 21 at the upper end, there are friction claws 21b and elastic claws 21a extending outward at annular intervals. The length of the elastic claw 21a extending outward is greater than that of the friction claw 21b. When the bracket assembly 20 is inserted into the receiving hole 10a, both the elastic claw 21a and the friction claw 21b are in contact with the bottom of the sinking groove 10b.

[0038] Exemplarily, the receiving hole 10a is provided on the outer ring 10 for receiving the bracket assembly 20. That is: the elastic bracket 22 is used to connect the upper pressing plate 21 and the lower pressing plate 23 to form the bracket assembly 20. Then, the bracket assembly 20 is inserted into the receiving hole 10a from the insertion opening of the outer ring 10. Since the upper pressing plate 21 and the lower pressing plate 23 may be eccentric during the assembly process, the elastic bracket 22 will be in an inclined state, and then the elastic bracket 22 and the transmission part 40a of the driven gear 40 will be worn due to interference (refer to Figure 7 and Figure 8 ). Therefore, in this embodiment, by providing a sinking groove 10b at one end of the receiving hole 10a close to the entrance, and the diameter of the sinking groove 10b gradually decreases in the direction close to the receiving hole 10a, so that the sinking groove 10b forms an inverted trapezoid. When the bracket assembly 20 is inserted into the receiving hole 10a, the elastic claw 21a provided on the outer edge of the upper end of the upper pressing plate 21 is always in contact with the inner wall of the sinking groove 10b. As it continuously penetrates into the receiving hole 10a, and the sinking groove 10b is in the shape of an inverted trapezoid, the elastic claw 21a is continuously squeezed to apply an inward force to the upper pressing plate 21, thereby effectively correcting the eccentricity between the upper pressing plate 21 and the lower pressing plate 23 and ensuring the concentricity of the upper pressing plate 21 and the lower pressing plate 23 after assembly.

[0039] Please refer to Figure 3 and Figure 4 , exemplarily, the elastic bracket 22 is used to connect the upper pressing plate 21 and the lower pressing plate 23 to form an integral body, and the elastic bracket 22 has a certain elastic force. When the elastic bracket 22 is not connected to the upper pressing plate 21 and the lower pressing plate 23, the elastic bracket 22 is in a relaxed state due to its own elastic force. At this time, the inner diameter of the elastic bracket 22 is slightly larger than the inner diameters of the upper pressing plate 21 and the lower pressing plate 23; when it is necessary to assemble the upper pressing plate 21 and the lower pressing plate 23, first squeeze the elastic bracket 22 inward so that the inner diameter of the elastic bracket 22 is smaller than the inner diameters of the upper pressing plate 21 and the lower pressing plate 23, and then connect the upper pressing plate 21 and the lower pressing plate 23 to the upper end and the lower end of the elastic bracket 22 respectively, thereby completing the fixation of the upper pressing plate 21 and the lower pressing plate 23.

[0040] Exemplarily, after the bracket assembly 20 is inserted into the receiving hole, the friction claws 21b and the elastic claws 21a provided on the outer edge of the upper end of the upper pressing plate 21 will abut against the bottom of the sinking groove, ensuring that the bracket assembly 20 will not become loose after being pressed into the receiving hole 10a, thereby fixing the bracket assembly 20 and the outer ring 10 into one body.

[0041] For the overrunning clutch based on the above technical features, the elastic bracket 22 is used to connect the upper pressing plate 21 and the lower pressing plate 23 into one body. Then, the assembled upper pressing plate 21 and lower pressing plate 23 are inserted into the receiving hole from the insertion port. Since a sinking groove 10b is provided at one end of the receiving hole 10a close to the insertion port, the elastic claws 21a provided on the outer edge of the upper end of the upper pressing plate 21 always abut against the inner wall of the sinking groove 10b. As it is continuously inserted into the receiving hole 10a, and since the sinking groove 10b is trapezoidal in reverse, the elastic claws 21a are continuously squeezed to apply an inward acting force on the upper pressing plate 21, so that the eccentricity existing between the upper pressing plate 21 and the lower pressing plate 23 can be effectively corrected, ensuring the concentricity of the upper pressing plate 21 and the lower pressing plate 23 after assembly, and avoiding wear of the transmission part 40a of the elastic bracket 22 and the driven gear 40.

[0042] In one embodiment, first blocks 21c extending inward are annularly and spacedly distributed on the inner edge of the upper end of the upper pressing plate 21, and second blocks 23a extending inward are annularly and spacedly distributed on the inner edge of the lower end of the lower pressing plate 23, and the second blocks 23a and the first blocks 21c are offset. The elastic bracket 22 includes a plurality of U-shaped springs 22a connected end to end in sequence. The U-shaped spring 22a has a first bayonet, and a second bayonet is formed between adjacent U-shaped springs 22a. Among them, when the elastic bracket 22 is assembled with the upper pressing plate 21 and the lower pressing plate 23, the first bayonet is clamped with the first block 21c, and the second bayonet is clamped with the second block 23a.

[0043] Exemplarily, when assembling the bracket assembly 20, the elastic bracket 22 formed by connecting the U-shaped springs 22a is squeezed inward, so that the U-shaped springs 22a contract to the inner sides of the upper pressing plate 21 and the lower pressing plate 23 due to being squeezed. At this time, the first bayonet and the second bayonet are respectively aligned with the first block 21c and the second block 23a. Then, the squeezing of the U-shaped springs 22a is released, so that the first bayonet and the second bayonet are respectively clamped with the first block 21c and the second block 23a, thereby being able to connect the upper pressing plate 21 and the lower pressing plate 23 into one body; when it is necessary to disassemble the upper pressing plate 21 and the lower pressing plate 23, only need to squeeze the U-shaped springs 22a inward to make the first bayonet and the second bayonet disengage from the clamping with the first block 21c and the second block 23a, and then take out the elastic bracket 22, and the disassembly of the upper pressing plate 21 and the lower pressing plate 23 can be realized. The structure is simple and the disassembly and assembly are convenient.

[0044] In one embodiment, a bent block 23b that bends downward extends from the inner edge at the lower end of the lower pressing plate 23. A passing space 50 is formed between the bent block 23b and the second clamping block 23a, and the lower end of the U-shaped spring 22a passes through the passing space 50. Thus, by providing the bent block 23b at the inner edge of the lower end of the lower pressing plate 23, a passing space 50 can be formed between the bent block 23b and the second clamping block 23a. When the lower end of the U-shaped spring 22a passes through the passing space 50, the bent block 23b and the second clamping block 23a always abut against both sides of the U-shaped spring 22a, thereby playing a limiting role and avoiding the elastic support 22 from becoming loose due to the lack of a limiting effect, so that the upper pressing plate 21 and the lower pressing plate 23 cannot be stably assembled.

[0045] In one embodiment, the width of the friction convex claw 21b is greater than the width of the elastic convex claw 21a, and the lengths of the first clamping block 21c and the second clamping block 23a are both smaller than the thickness of the U-shaped spring 22a.

[0046] Exemplarily, based on setting the width of the friction convex claw 21b to be greater than the width of the elastic convex claw 21a, it can be ensured that the area where the friction convex claw 21b abuts against the bottom of the sinking groove is relatively large, and it can be avoided that the assembly is unstable due to the too small contact area between the friction convex claw 21b and the bottom of the sinking groove during the assembly process. In addition, the lengths of the first clamping block 21c and the second clamping block 23a are set to be smaller than the thickness of the U-shaped spring 22a to avoid the first clamping block 21c and the second clamping block 23a from contacting the transmission part 40a of the driven gear 40 and causing wear after the driven gear is installed.

[0047] In one embodiment, the friction convex claw 21b includes a first connecting section and a first extending section connected integrally. One end of the first connecting section away from the first extending section is connected to the outer edge at the upper end of the upper pressing plate 21, and the first connecting section extends obliquely upward along the outside. A first included angle d greater than 90° is formed between the first connecting section and the first extending section. Specifically, the first included angle d is between 120° and 145°.

[0048] Exemplarily, the friction convex claw 21b is composed of a first connecting end and a first extending section connected integrally, and a first included angle d greater than 90° is formed between the first connecting section and the first extending section. When sliding down along the inner wall of the sinking groove to the bottom of the groove, the first extending section will be squeezed against the bottom of the sinking groove for fixation, and it can be avoided that the friction convex claw 21b is damaged during the assembly process. In addition, based on setting the first included angle d within the above range, the first extending section can be in full contact with the bottom of the sinking groove, which is beneficial to improving the stability of fixation.

[0049] In one embodiment, the resilient pawl 21a includes an integrally formed second connecting section and a second extending section. One end of the second connecting section away from the second extending section is connected to the outer edge of the upper pressing plate 21 at the upper end, and the second connecting section extends obliquely upward on the outside. A second included angle f greater than 90° is formed between the second connecting section and the second extending section. Specifically, the second included angle f is between 120° and 145°.

[0050] Exemplarily, the resilient pawl 21a is composed of an integrally formed second connecting section and a second extending section, and a second included angle f greater than 90° is formed between the second connecting section and the second extending section. When the second extending section abuts against the inner wall of the sunk groove, the second extending section will be subjected to a vertically downward and horizontally inward acting force, so that the upper pressing plate 21 and the lower pressing plate 23 can be corrected, ensuring the concentricity of the upper pressing plate 21 and the lower pressing plate 23.

[0051] Please refer to Figure 1 and Figure 2 In one embodiment, it further includes a driven gear 40. A transmission portion 40a extends upward from the middle of the driven gear 40. The transmission portion 40a extends into the receiving hole 10a and passes through the lower pressing plate 23 and the upper pressing plate 21. Wherein, when the driven gear 40 is driven to rotate and the rotational speed is greater than that of the outer ring 10, the roller 30 abuts against the transmission portion 40a to drive the outer ring 10 to rotate; when the rotational speed of the driven gear 40 is less than that of the outer ring 10, the roller 30 disengages from the abutment with the transmission portion 40a.

[0052] Exemplarily, the elastic bracket 22 is used to connect the upper pressing plate 21 and the lower pressing plate 23 into one body. After a plurality of rollers 30 are loaded into the installation space, the transmission portion 40a of the driven gear 40 is inserted into the receiving hole 10a from the lower end of the outer ring 10. At this time, the transmission portion 40a of the driven gear 40 passes through the upper pressing plate 21 and the lower pressing plate 23, and the roller 30 is located on the outer periphery of the transmission portion 40a. When the driven gear 40 is driven to rotate and the rotational speed of the transmission portion 40a is greater than that of the outer ring 10, the roller 30 moves under the action of friction to abut against the transmission portion 40a, so that the outer ring 10 can be driven to rotate; when the rotational speed of the outer ring 10 is greater than that of the transmission portion 40a, the roller 30 moves under the action of friction, so that the roller 30 disengages from the abutment with the transmission portion 40a, so that the rotation of the outer ring 10 and the driven gear 40 does not interfere with each other.

[0053] The embodiment of the present application also provides a motorcycle, including the overrunning clutch of the above embodiment.

[0054] The motorcycle according to the embodiment of the present disclosure adopts the above overrunning clutch, and the technical effects are the same as those of the above overrunning clutch, which will not be elaborated here.

[0055] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A one-way clutch, characterized in that: include: The outer ring is provided with a receiving hole penetrating the outer ring in the vertical direction, and a sink groove communicating with the receiving hole is provided at one end of the receiving hole close to the insertion port, and the diameter of the sink groove gradually decreases toward the receiving hole; A bracket assembly, comprising an upper pressing plate, a lower pressing plate and an elastic bracket, wherein the elastic bracket is located between the upper pressing plate and the lower pressing plate, and the upper end of the elastic bracket is connected to the upper pressing plate, and the lower end of the elastic bracket is connected to the lower pressing plate, so that the upper pressing plate and the lower pressing plate are connected to form an integral body, and an installation space is defined between the upper pressing plate and the lower pressing plate; A plurality of rollers are installed in the installation space in a ring shape and are located at the periphery of the elastic bracket, and the upper end and the lower end of the rollers are respectively abutted against the upper pressing plate and the lower pressing plate; Among them, the outer edge of the upper end of the upper pressure plate is distributed with friction claws and elastic claws extending outward in a ring-shaped manner, and the length of the elastic claw extending outward is greater than the length of the friction claw; when the bracket assembly is installed into the accommodating hole, the elastic claw and the friction claw are both in contact with the bottom of the groove.

2. The one-way clutch according to claim 1, characterized in that: The inner edge of the upper end of the upper pressing plate is provided with first clamping blocks extending inwardly at annular intervals, and the inner edge of the lower end of the lower pressing plate is provided with second clamping blocks extending inwardly at annular intervals, and the second clamping blocks are offset from the first clamping blocks; The elastic bracket includes a plurality of U-shaped springs connected end to end in sequence, the U-shaped springs have a first bayonet, and a second bayonet is formed between adjacent U-shaped springs; Wherein, when the elastic bracket is assembled with the upper pressing plate and the lower pressing plate, the first clamping port is clamped with the first clamping block, and the second clamping port is clamped with the second clamping block.

3. The one-way clutch according to claim 2, characterized in that: A bending block that bends downwards extends from the inner edge of the lower end of the lower pressing plate, a penetration space is formed between the bending block and the second clamping block, and the lower end of the U-shaped spring passes through the penetration space.

4. The one-way clutch according to claim 2, characterized in that: The width of the friction cam is greater than the width of the elastic cam, and the lengths of the first clamping block and the second clamping block are both less than the thickness of the U-shaped spring.

5. The one-way clutch according to claim 1, characterized in that: The friction claw includes a first connecting section and a first extension section that are connected together. One end of the first connecting section away from the first extension section is connected to the outer edge of the upper end of the upper pressure plate, and the first connecting section extends obliquely upward along the outer side. A first angle greater than 90° is formed between the first connecting section and the first extension section.

6. The one-way clutch according to claim 5, characterized in that: The first angle is between 110° and 145°.

7. The one-way clutch according to claim 1, characterized in that: The elastic claw includes a second connecting section and a second extending section that are connected together as a whole. One end of the second connecting section away from the second extending section is connected to the outer edge of the upper end of the upper pressure plate, and the second connecting section extends obliquely upward along the outer side. A second angle greater than 90° is formed between the second connecting section and the second extending section.

8. The one-way clutch according to claim 7, characterized in that: The second angle is between 110° and 145°.

9. The one-way clutch according to any one of claims 1 to 8, characterized in that: It also includes a driven gear, a transmission part extending upward from the middle of the driven gear, the transmission part extends into the accommodating hole and passes through the lower pressing plate and the upper pressing plate; When the driven gear is driven to rotate and its rotation speed is greater than that of the outer ring, the roller abuts against the transmission part to drive the outer ring to rotate; when the rotation speed of the driven gear is less than that of the outer ring, the roller disengages from the abutment with the transmission part.

10. A motorcycle, characterized in that: The one-way clutch comprises the one-way clutch as claimed in any one of claims 1 to 9.

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