Motorcycle

Abstract

The motorcycle comprises a transmission system, the transmission system comprises a speed change mechanism, a power assembly is in transmission connection with a walking system through the speed change mechanism, the speed change mechanism comprises a speed change shell, a speed change hub, a gear shifting positioning mechanism, a main shaft and an auxiliary shaft, and the gear shifting positioning mechanism comprises a positioning rocker arm, a positioning roller, a rocker arm lining, a fastener and a torsional spring. An extension part is formed at one end of the positioning rocker arm, the positioning rocker arm is provided with a lining hole penetrating through the extension part, the positioning roller is rotationally connected to the end, away from the extension part, of the positioning rocker arm, abuts against and is matched with the variable-speed hub and is used for limiting rotation of the variable-speed hub, and at least part of the rocker arm lining is embedded in the lining hole; the fastening piece penetrates through the rocker arm lining and is fixedly connected with the speed change shell, the torsional spring is connected to the extending part, one end of the torsional spring is connected or connected with the speed change shell in an abutting mode, and the other end of the torsional spring is connected or connected with the positioning rocker arm in an abutting mode. Through the arrangement, the stability of positioning the speed change hub by the gear shifting speed change mechanism can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle technology, in particular to a motorcycle. BACKGROUND

[0002] The motorcycle is a vehicle that is steered by hand handlebars, has the characteristics of lightness, flexibility and fast driving, and is widely used in patrol, passenger and cargo transportation and other fields.

[0003] The motorcycle generally includes a frame, a body cover, a walking system, a suspension system, a seat, an electrical system, a power assembly and a shift positioning mechanism. The power assembly includes a gear shift hub for gear shifting, and the shift positioning mechanism is used for positioning the gear shift hub. The shift positioning mechanism generally includes a positioning roller, a positioning rocker arm, a fastener and a torsion spring. The positioning rocker arm, the positioning roller and the torsion spring are fixed by the fastener. If the connection between the positioning rocker arm and the fastener is not tight, the connection stability between the positioning rocker arm and the fastener will be reduced, thereby reducing the stability of the shift positioning mechanism in positioning the gear shift hub. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems of the prior art, the purpose of the present application is to provide a motorcycle, which has high stability in positioning the gear shift hub of the shift mechanism.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A motorcycle includes a frame, a walking system, a power assembly and a transmission system. The walking system is at least partially located below the frame, the power assembly is supported by the frame, and the transmission system includes a gear shift mechanism, which is in transmission connection with the power assembly and the walking system. The gear shift mechanism includes a gear shift housing, a gear shift hub, a shift positioning mechanism, a main shaft and a secondary shaft. The main shaft and the secondary shaft are both rotationally connected to the gear shift housing, and the gear shift hub is rotationally connected to the gear shift housing. The gear shift hub changes the transmission ratio of the main shaft and the secondary shaft by rotation. The shift positioning mechanism is installed on the gear shift housing and is used to limit the rotation of the gear shift hub. The shift positioning mechanism includes a positioning rocker arm, a positioning roller, a rocker arm bushing, a fastener and a torsion spring. One end of the positioning rocker arm forms an extension, the positioning rocker arm is provided with a bushing hole penetrating the extension, and the positioning roller is rotationally connected to the end of the positioning rocker arm away from the extension. The positioning roller is in abutting cooperation with the gear shift hub and is used to limit the rotation of the gear shift hub. The rocker arm bushing is at least partially embedded in the bushing hole, the fastener is provided in the rocker arm bushing and is fixedly connected with the gear shift housing, and the torsion spring is connected with the extension. One end of the torsion spring is connected with or abuts against the gear shift housing, and the other end of the torsion spring is connected with or abuts against the positioning rocker arm. The torsion spring is used to drive the positioning rocker arm to rotate around the fastener.

[0007] Furthermore, a first mounting part and a second mounting part are provided at the end of the positioning rocker arm away from the extension. The first mounting part and the second mounting part are distributed along the center line direction of the bushing hole. The positioning roller is rotatably connected between the first mounting part and the second mounting part so that the first mounting part and the second mounting part limit the positioning roller on both sides along its own center line direction.

[0008] Furthermore, the positioning rocker arm includes a rocker arm body, a first mounting part and a second mounting part located at one end of the rocker arm body, and an extension part located at the other end of the rocker arm body; a plane perpendicular to the center line of the bushing hole and passing through the thickness center of the rocker arm body along the center line of the bushing hole is defined as a preset plane, and the rotation direction of the positioning rocker arm is parallel to the preset plane; the preset plane passes through the rocker arm body and the first mounting part, and the second mounting part and the extension part are located on both sides of the preset plane.

[0009] Furthermore, the extension directions of the first mounting part and the second mounting part are substantially parallel to the preset plane, and the first mounting part and the second mounting part have a flat structure.

[0010] Furthermore, both the first mounting part and the second mounting part are provided with mounting holes. The shift positioning mechanism includes a rivet. The rivet passes through the mounting hole of the second mounting part, the positioning roller and the mounting hole of the first mounting part in sequence. The two ends of the rivet are fixed to the first mounting part and the second mounting part respectively. The positioning roller is rotatably connected to the first mounting part and the second mounting part through the rivet.

[0011] Furthermore, the positioning rocker arm has a notch structure, and one end of the torsion spring is at least partially located within the notch structure and connected to or abutting against the notch structure. The notch structure is used to limit one end of the torsion spring; the other end of the torsion spring is connected to or abutting against the transmission housing.

[0012] Furthermore, the notch structure is located on the side wall of the positioning rocker arm; the positioning rocker arm is provided with a functional part, and one end of the torsion spring at least partially abuts against the functional part; the torsion spring can apply a clamping force to the functional part when releasing elastic potential energy.

[0013] Furthermore, the second mounting part is connected to the rocker arm body via the functional part, or the second mounting part is connected to the first mounting part via the functional part; one end of the torsion spring at least partially abuts against the side wall of the functional part near the extension.

[0014] Furthermore, the shift positioning mechanism also includes a washer, which abuts against the end of the extension away from the rocker arm body. A portion of the torsion spring wrapped around the outer periphery of the extension is located between the rocker arm body and the washer. Fasteners pass through the rocker arm bushing and the washer and are fixedly connected to the transmission housing.

[0015] Furthermore, a mounting protrusion and a limiting protrusion are formed inside the transmission housing. The mounting protrusion is fixedly connected to the fastener, and the limiting protrusion is located on one side of the mounting protrusion and abuts against the torsion spring.

[0016] The aforementioned motorcycle, through the extension and rocker arm bushing, can increase the contact area between the positioning rocker arm and the fastener, thereby helping to reduce the gap between the positioning rocker arm and the fastener, and thus improving the stability of the positioning shift hub of the gear shift mechanism. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a motorcycle provided in an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the overall structure of the powertrain of the motorcycle provided in an embodiment of this application.

[0019] Figure 3 An exploded view of the powertrain of a motorcycle provided in an embodiment of this application.

[0020] Figure 4 This is a schematic diagram of the internal structure of a motorcycle engine provided in an embodiment of this application.

[0021] Figure 5 This is a cross-sectional schematic diagram of the gear shifting positioning mechanism of a motorcycle provided in an embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the overall structure of the gear shifting positioning mechanism for a motorcycle provided in an embodiment of this application.

[0023] Figure 7 An exploded view of the gear shifting positioning mechanism and housing of a motorcycle provided in an embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, this application provides a motorcycle 100, which includes a frame 11, a body panel 12, a running system 13, a suspension system 14, a seat 15, an electrical system 16, a transmission system (not shown) and a powertrain 200.

[0026] For ease of description, this application defines the directions of front, back, left, right, up, and down. The front-back direction refers to the length direction of the motorcycle frame 11, the left-right direction refers to the width direction of the motorcycle frame 11, and the up-down direction refers to the height direction of the motorcycle frame 11. In this embodiment, the directions of front, back, left, right, up, and down are based on the motorcycle 100 traveling on a level road surface, not on a sloping road surface.

[0027] The frame 11 serves as the basic framework of the motorcycle 100, supporting the body panel 12, running system 13, suspension system 14, seat 15, electrical system 16, transmission system, and powertrain 200. The body panel 12 is at least partially located on and connected to the frame 11, protecting the internal components of the motorcycle 100. The running system 13 is at least partially located below the frame 11, and the suspension system 14 connects the running system 13 to the frame 11. The powertrain 200 is supported by the frame 11. The electrical system 16 is supported by the frame 11 and is at least partially mounted on the body panel 12 or the frame 11. The electrical system 16 is used to display the motorcycle 100's driving data and control the motorcycle 100's operation. The seat 15 is supported by the frame 11 and is used to support the driver and / or passenger. The transmission system is used to transmit power to the powertrain 200. The transmission system includes a gear shift mechanism, which is supported by the frame 11 and drives the powertrain 200 to the running system 13.

[0028] like Figure 3As shown, the powertrain 200 includes an engine supported by a frame 11, and the engine is connected to the transmission mechanism. Specifically, the engine includes a housing 21, a crankshaft 22, an intake mechanism 23, an ignition mechanism (not shown), a timing mechanism 25, and a piston mechanism 26. The housing 21 serves as the basic frame of the engine, supporting the crankshaft 22, intake mechanism 23, ignition mechanism, timing mechanism 25, and piston mechanism 26. Specifically, the housing 21 includes a cylinder head cover 211, a cylinder head 212, a cylinder block 213, a crankcase 214, and an oil pan 215, which are connected sequentially. The cylinder head 212 and cylinder block 213 are connected to form a combustion chamber. The intake mechanism 23 is connected to the cylinder head 212 and provides air to the combustion chamber to mix air and fuel to form an air-fuel mixture. An ignition mechanism is at least partially located within the combustion chamber and is used to ignite the air-fuel mixture. A piston mechanism 26 is at least partially located within the cylinder block 213 and is used to convert the thermal energy generated by the combustion of the air-fuel mixture into mechanical energy. Specifically, the piston mechanism 26 includes a piston that is used to convert thermal energy into reciprocating mechanical energy. A crankshaft 22 is at least partially located within the crankcase 214 and is rotatably connected to the crankcase 214. The crankshaft 22 is used to convert the reciprocating motion of the piston into rotational motion, and is drively connected to the transmission mechanism. A timing mechanism 25 is at least partially located within the cylinder head 212 and is drively connected to the crankshaft 22. The timing mechanism 25 is used to control the intake and exhaust of the engine.

[0029] like Figure 4 and Figure 5 As shown, in one embodiment, the transmission mechanism further includes a transmission housing 30, a main shaft 31, a countershaft 32, a transmission hub 33, and a shift positioning mechanism 34. The main shaft 31 and the countershaft 32 are both rotatably connected to the transmission housing 30. The transmission hub 33 is rotatably connected to the transmission housing 30, and its rotation changes the transmission ratio between the countershaft 32 and the main shaft 31. The shift positioning mechanism 34 is mounted on the transmission housing 30 and restricts the rotation of the transmission hub 33 to prevent accidental rotation after the transmission ratio between the countershaft 32 and the main shaft 31 is changed, thereby improving the operational reliability of the transmission hub 33.

[0030] like Figure 6 and Figure 7As shown, more specifically, the shift positioning mechanism 34 includes a positioning rocker arm 341, a positioning roller 342, a rocker arm bushing 343, a fastener 345, and a torsion spring 346. The positioning rocker arm 341 has the positioning roller 342 and the transmission housing 30 connected to its two ends respectively. One end of the positioning rocker arm 341 forms an extension 3411, and the positioning rocker arm 341 has a bushing hole 3412 penetrating the extension 3411. The positioning roller 342 is rotatably connected to the end of the positioning rocker arm 341 away from the extension 3411. The positioning roller 342 is used to abut against the transmission hub 33 and also to limit the rotation of the transmission hub 33. The rocker arm bushing 343 is at least partially embedded in the bushing hole 3412. The fastener 345 passes through the rocker arm bushing 343 and is fixedly connected to the transmission housing 30, thereby fixing the positioning rocker arm 341 to the transmission housing 30. A torsion spring 346 is connected to the extension 3411. One end of the torsion spring 346 is connected to or abuts against the transmission housing 30, and the other end is connected to or abuts against the positioning rocker arm 341. The torsion spring 346 is used to drive the positioning rocker arm 341 to rotate around the fastener 345. The torsion spring 346 can have a preload force acting on the positioning rocker arm 341. This preload force ensures that the positioning roller 342 can always abut against the transmission hub 33, thereby improving the reliability of the positioning roller 342 in positioning the transmission hub 33. The transmission hub 33 also includes a positioning star wheel 331, which is used to cooperate with the positioning roller 342 to position the transmission hub 33.

[0031] This configuration increases the contact area between the positioning rocker arm 341 and the fastener 345 through the extension 3411 and the rocker arm bushing 343, thereby reducing the gap between the positioning rocker arm 341 and the fastener 345 and preventing the positioning rocker arm 341 from wobbling relative to the fastener 345. This improves the connection stability between the positioning rocker arm 341 and the fastener 345, and further improves the reliability of the shift positioning mechanism 34 in positioning the gear shift hub 33.

[0032] It should be noted that in this application, the positioning roller 342 can be replaced with other components capable of positioning the gear shift hub 33 and rotatably connected to the positioning rocker arm 341, and this application does not impose any limitations on this. For example, the positioning roller 342 can be replaced with a rotary bearing.

[0033] In one embodiment, the positioning rocker arm 341 is provided with a first mounting portion 3413 and a second mounting portion 3414. Both the first mounting portion 3413 and the second mounting portion 3414 are located at the end of the positioning rocker arm 341 away from the extension portion 3411, and are distributed along the centerline of the bushing hole 3412. Specifically, the positioning roller 342 is rotatably connected between the first mounting portion 3413 and the second mounting portion 3414, so that the first mounting portion 3413 and the second mounting portion 3414 limit the positioning roller 342 on both sides along its own centerline. This arrangement allows the first mounting portion 3413 and the second mounting portion 3414 to limit the axial sides of the positioning roller 342, thereby preventing the positioning roller 342 from deflecting axially. This improves the connection stability between the positioning roller 342 and the positioning rocker arm 341, and consequently improves the reliability of the positioning roller 342 in positioning the gear shift hub 33.

[0034] like Figure 7 As shown, in one embodiment, the positioning rocker arm 341 includes a rocker arm body 3415. A first mounting portion 3413 and a second mounting portion 3414 are located at one end of the rocker arm body 3415, and an extension portion 3411 is located at the other end of the rocker arm body 3415. A plane perpendicular to the centerline of the bushing hole 3412 and passing through the thickness center of the rocker arm body 3415 along the centerline of the bushing hole 3412 is defined as a preset plane 101, and the rotation direction of the positioning rocker arm 341 is parallel to the preset plane 101. The preset plane 101 passes through the rocker arm body 3415 and the first mounting portion 3413, and the second mounting portion 3414 and the extension portion 3411 are located on both sides of the preset plane 101. This configuration avoids the second mounting part 3414 and the extension part 3411 being located on one side of the preset plane 101, which would cause the weight on one side of the rocker arm body 3415 to be too heavy. This prevents the positioning rocker arm 341 from tilting or wobbling due to the excessive weight on one side of the rocker arm body 3415, thereby improving the positioning stability of the shift positioning mechanism 34.

[0035] like Figure 6 As shown, as an optional implementation, the extending directions of the first mounting portion 3413 and the second mounting portion 3414 are substantially parallel to the preset plane 101, and the first mounting portion 3413 and the second mounting portion 3414 have a flat structure. This flat structure allows for a reduction in the thickness of the first mounting portion 3413 and the second mounting portion 3414 while still satisfying the requirement to limit the deflection of the positioning roller 342. This helps to reduce the weight of the first mounting portion 3413 and the second mounting portion 3414, making the positioning rocker arm 341 lighter, which in turn facilitates the torsion spring 346 driving the positioning rocker arm 341 to rotate for positioning.

[0036] In one embodiment, both the first mounting portion 3413 and the second mounting portion 3414 are provided with mounting holes 3416. The shift positioning mechanism 34 includes a rivet 347, which passes sequentially through the mounting holes 3416 of the second mounting portion 3414, the positioning roller 342, and the mounting holes 3416 of the first mounting portion 3413. The two ends of the rivet 347 are fixed to the first mounting portion 3413 and the second mounting portion 3414, respectively. The positioning roller 342 is rotatably connected to the first mounting portion 3413 and the second mounting portion 3414 through the rivet 347.

[0037] As an optional implementation, the shift positioning mechanism 34 includes a roller bushing 348. The positioning roller 342 has a shaft hole 3421, the roller bushing 348 is located in the shaft hole 3421, and a rivet 347 passes through the roller bushing 348. This arrangement reduces the gap between the positioning roller 342 and the rivet 347 through the roller bushing 348, thereby improving the connection stability between the positioning roller 342 and the rivet 347, and consequently improving the reliability of the positioning roller 342 in positioning the shift hub 33. Furthermore, fixing the components by rivet passage improves the ease of assembly of the positioning roller 342 and the positioning rocker arm 341.

[0038] like Figure 5 and Figure 6 As shown, in one embodiment, the positioning rocker arm 341 also has a notch structure 3417. Specifically, one end of the torsion spring 346 is at least partially located within the notch structure 3417 and is engaged or abutted against the notch structure 3417. More specifically, the notch structure 3417 is used to limit one end of the torsion spring 346; the other end of the torsion spring 346 is connected to or abutted against the transmission housing 30. With this configuration, one end of the torsion spring 346 can be limited by the notch structure 3417, thereby preventing the torsion spring 346 from slipping off the positioning rocker arm 341 and causing the positioning roller 342 to fail to position the transmission hub 33, thus improving the reliability of the shift positioning mechanism 34 in positioning the transmission hub 33.

[0039] In one embodiment, the notch structure 3417 is located on the side wall of the positioning rocker arm 341; the positioning rocker arm 341 is provided with a functional part 3418, and one end of the torsion spring 346 at least partially abuts against the functional part 3418; the torsion spring 346 can apply a pressing force to the functional part 3418 when releasing its elastic potential energy. This arrangement allows the torsion spring 346 to drive the positioning rocker arm 341 to rotate.

[0040] In some embodiments, the end of the torsion spring 346 away from the notch structure 3417 is connected to the transmission housing 30 so that the end of the torsion spring 346 near the notch structure 3417 can provide a force to the notch structure 3417.

[0041] It should be noted that the end of the torsion spring 346 near the notch structure 3417 includes a vertical section 3461 and an abutment section 3462, which are integrally formed. The vertical section 3461 is at least partially located within the notch structure 3417 and can provide force to it. The abutment section 3462 at least partially abuts against the functional part 3418 and can provide force to it. This arrangement allows the torsion spring 346 to simultaneously provide force to both the notch structure 3417 and the functional part 3418, thereby improving the connection stability between the torsion spring 346 and the positioning rocker arm 341, and also facilitating the torsion spring 346's ability to drive the positioning rocker arm 341 to rotate. The extension direction of the vertical section 3461 is substantially perpendicular to the extension direction of the abutment section 3462; that is, the abutment section 3462 can be considered to be formed by a partial bend in the vertical section 3461.

[0042] As an alternative implementation, the second mounting portion 3414 is connected to the rocker arm body 3415 via the functional portion 3418, or the second mounting portion 3414 is connected to the first mounting portion 3413 via the functional portion 3418. Specifically, one end of the torsion spring 346 is at least partially abutted against a side wall of the functional portion 3418 near the extension portion 3411, so that the torsion spring 346 can drive the first mounting portion 3413 and the second mounting portion 3414 to rotate, thereby achieving the function of limiting the rotation of the transmission hub 33.

[0043] like Figure 5 and Figure 7 As shown, in one embodiment, the shift positioning mechanism 34 also includes a washer 349. The washer 349 abuts against the end of the extension 3411 away from the rocker arm body 3415. The portion of the torsion spring 346 surrounding the extension 3411 is located between the rocker arm body 3415 and the washer 349. The fastener 345 passes through the rocker arm bushing 343 and the washer 349 and is fixedly connected to the transmission housing 30. This arrangement prevents the torsion spring 346 from falling off the positioning rocker arm 341, which would cause the shift positioning mechanism 34 to fail to position the transmission hub 33, thereby improving the positioning reliability of the shift positioning mechanism 34.

[0044] In one embodiment, a mounting protrusion 216 and a limiting protrusion 217 are formed within the transmission housing 30. Specifically, the mounting protrusion 216 is fixedly connected to a fastener 345. In some embodiments, the fastener 345 can be a bolt, through which the positioning rocker arm 341, rocker arm bushing 343, torsion spring 346, and washer 349 are threaded and then fixedly connected to the mounting protrusion 216, thereby realizing the connection between the shift positioning mechanism 34 and the transmission housing 30.

[0045] Specifically, the limiting protrusion 217 is located on the side of the mounting protrusion 216, and the limiting protrusion 217 abuts against the torsion spring 346. In this configuration, the limiting protrusion 217 limits the end of the torsion spring 346 away from the positioning rocker arm 341, so that the torsion spring 346 can provide preload to the positioning rocker arm 341, thereby enabling the positioning roller 342 to position the gear shift hub 33.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A motorcycle, comprising: a frame; a walking system, which is at least partially located below the frame; a power assembly, which is supported by the frame; a transmission system, which comprises a gear shifting mechanism, the gear shifting mechanism drivingly connecting the power assembly and the walking system; the gear shifting mechanism comprising: a gear shifting housing; a main shaft and a secondary shaft, which are both rotationally connected to the gear shifting housing; a gear shifting hub, which is rotationally connected to the gear shifting housing, the gear shifting hub changing the transmission ratio of the main shaft and the secondary shaft by rotation; a gear shifting positioning mechanism, which is installed on the gear shifting housing and used to limit the rotation of the gear shifting hub; characterized in that, the gear shifting positioning mechanism comprising: a positioning rocker, which is formed with an extension at one end, the positioning rocker being provided with a bushing hole penetrating through the extension; a positioning roller, which is rotationally connected to the end of the positioning rocker away from the extension, the positioning roller being in abutting cooperation with the gear shifting hub and used to limit the rotation of the gear shifting hub; a rocker bushing, which is at least partially embedded in the bushing hole; a fastener, which is penetratingly arranged in the rocker bushing and fixedly connected with the gear shifting housing; a torsional spring, which is connected to the extension, one end of the torsional spring being connected with or abutting against the gear shifting housing, the other end of the torsional spring being connected with or abutting against the positioning rocker; the torsional spring being used to drive the positioning rocker to rotate around the fastener. 2.A motorcycle according to claim 1, characterized in that, the end of the positioning rocker away from the extension is provided with a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are distributed along the center line direction of the bushing hole, the positioning roller is rotationally connected between the first mounting portion and the second mounting portion, so that the first mounting portion and the second mounting portion limit the positioning roller on both sides along the center line direction of the positioning roller. 3.A motorcycle according to claim 2, characterized in that, the positioning rocker comprises a rocker main body, the first mounting portion and the second mounting portion are located at one end of the rocker main body, the extension is located at the other end of the rocker main body; a plane perpendicular to the center line of the bushing hole and passing through the thickness center of the rocker main body along the center line direction of the bushing hole is defined as a preset plane, the rotation direction of the positioning rocker is parallel to the preset plane; the preset plane penetrates the rocker main body, the first mounting portion, the second mounting portion and the extension are located on both sides of the preset plane respectively. 4.A motorcycle according to claim 3, characterized in that, the extension direction of the first mounting portion and the extension direction of the second mounting portion are substantially parallel to the preset plane, the first mounting portion and the second mounting portion are in a flat structure. 5.A motorcycle according to claim 2 or 3, characterized in that, The first mounting part and the second mounting part are provided with mounting holes, the gear shifting positioning mechanism comprises a rivet, the rivet sequentially passes through the mounting hole of the second mounting part, the positioning roller and the mounting hole of the first mounting part, and two ends of the rivet are fixed with the first mounting part and the second mounting part respectively; the positioning roller is rotationally connected with the first mounting part and the second mounting part through the rivet.

6. The motorcycle according to claim 3, wherein The positioning rocker arm is provided with a notch structure, one end of the torsion spring is at least partially located in the notch structure and connected or abuts against the notch structure, and the notch structure is used for limiting one end of the torsion spring; the other end of the torsion spring is connected or abuts against the transmission housing.

7. The motorcycle according to claim 6, wherein The notch structure is located on the side wall of the positioning rocker arm; the positioning rocker arm is provided with a functional part, one end of the torsion spring at least partially abuts against the functional part; and the torsion spring can exert a pressing force on the functional part when releasing elastic potential energy.

8. The motorcycle according to claim 7, wherein The second mounting part is connected with the rocker body through the functional part, or the second mounting part is connected with the first mounting part through the functional part; and one end of the torsion spring at least partially abuts against one side wall of the functional part close to the extension part.

9. The motorcycle according to claim 3, wherein The gear shifting positioning mechanism further comprises a washer, the washer abuts against one end of the extension part away from the rocker body, the part of the torsion spring around the outer periphery of the extension part is located between the rocker body and the washer, and the fastener passes through the rocker bushing and the washer and is fixedly connected with the transmission housing.

10. The motorcycle according to claim 1, wherein The transmission housing is formed with a mounting protrusion and a limiting protrusion, the mounting protrusion is fixedly connected with the fastener, the limiting protrusion is located on one side of the mounting protrusion, and the limiting protrusion abuts against the torsion spring.

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