motorcycle

Abstract

This application provides a motorcycle including a frame, a running gear, body panels, and a power system. The frame includes a front support bracket, a rear support bracket, a center cross tube, and an engine mount. The engine mount is at least partially located behind the center cross tube and connected to the rear support bracket. The power system includes an engine assembly and a suspension assembly. The suspension assembly includes a suspension body, a first limiting arm, a second limiting arm, and a connecting arm. The connecting arm is located on one side of the suspension body. The first and second limiting arms are located on the side of the suspension body away from the connecting arm. The suspension body is rotatably connected to the engine mount. The connecting arm is rotatably connected to the engine assembly. When the engine assembly is connected to both the engine mount and the engine assembly via the suspension assembly, the center cross tube is located between the first and second limiting arms. This application provides a motorcycle with improved ride smoothness.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a motorcycle. Background Technology

[0002] Gasoline-powered scooters are a type of motorcycle, with their engines located at the rear and lower part of the vehicle. They are typically designed with an engine suspension to connect the frame and engine. Structurally, the engine suspension serves to connect the frame and engine, as well as support the engine. During riding, the engine suspension significantly impacts the overall ride smoothness, handling stability, and riding comfort. The front tube of the engine suspension connects to the rear tube via a reinforcing plate. The two tubes are essentially horizontal, lacking a lever structure, which hinders significant vertical movement of the rear wheel and engine, resulting in considerable vibration, impact, and noise. In related technologies, the engine suspension includes a front tube, a rear tube, and a reinforcing plate. The reinforcing plate connects the front and rear tubes; the front tube connects to the frame; and the rear tube connects to the engine. During riding, because the front and rear tubes are at roughly the same height, and the connection between the engine suspension and the frame and engine is simple, excessive vertical movement of the rear wheel can easily cause significant vertical movement of the engine, resulting in considerable vibration, impact, and noise. This increases the dynamic load on vehicle components and can negatively affect the overall ride smoothness. Utility Model Content

[0003] In view of this, this application provides a motorcycle with better ride smoothness.

[0004] One embodiment of this application provides a motorcycle. The motorcycle includes a frame, a running gear, a body panel, and a power system. The frame includes a front support bracket, a rear support bracket, and a center cross tube. The center cross tube is located between the front support bracket and the rear support bracket and is fixedly connected to both the front and rear support brackets. The running gear includes a rear wheel located at least partially below the rear support bracket. The body panel is at least partially supported by the frame. The power system is supported by the frame and driven to the rear wheel. The frame also includes an engine mount. The engine mount is at least partially located behind the center cross tube and connected to the rear support bracket. The power system includes an engine assembly and a suspension assembly. The engine assembly is connected to the engine mount via the suspension assembly. The suspension assembly includes a suspension body, a first limiting arm, a second limiting arm, and a connecting arm. The connecting arm is located on one side of the suspension body. The first and second limiting arms are located on the side of the suspension body away from the connecting arm. The suspension body is rotatably connected to the engine mount. The connecting arm is rotatably connected to the engine assembly. When the engine assembly is connected to the engine mounting bracket and the engine assembly via the hanger, the middle horizontal tube is located between the first limit arm and the second limit arm.

[0005] In some embodiments of this application, the first limiting arm includes a first arm body and a first buffer block. The first buffer block is disposed on the side of the first arm body near the middle horizontal tube. The first buffer block is configured to elastically deform in response to applied forces. The second limiting arm includes a second arm body and a second buffer block. The second buffer block is disposed on the side of the second arm body near the middle horizontal tube. The second buffer block is configured to elastically deform in response to applied forces.

[0006] In some embodiments of this application, the rotation axis of the suspension body relative to the engine mounting bracket is defined as the first axis. The first arm body has a first support plate and a first connecting plate. Two first support plates are provided. The two first support plates are fixed to the suspension body at intervals along the first axis. A first connecting plate connects the two first support plates respectively. A first buffer block is connected to the first connecting plate. The second arm body has a second support plate and a second connecting plate. Two second support plates are provided. The two second support plates are fixed to the suspension body at intervals along the first axis. A second connecting plate connects the two second support plates respectively. A second buffer block is connected to the second connecting plate.

[0007] In some embodiments of this application, the width of the first support plate and the width of the second support plate gradually decrease along the radial direction of the first axis and away from the first axis.

[0008] In some embodiments of this application, the contour of the contact surface between the first buffer block and the middle horizontal tube is basically consistent with the outer contour of the middle horizontal tube, and the contour of the contact surface between the second buffer block and the middle horizontal tube is basically consistent with the outer contour of the middle horizontal tube.

[0009] In some embodiments of this application, the suspension body is configured to rotate relative to the engine mount to a first rotational position or a second rotational position. When the suspension body is in the first rotational position, the first limiting arm abuts against the middle cross tube. When the suspension body is in the second rotational position, the second limiting arm abuts against the middle cross tube.

[0010] In some embodiments of this application, when the hanging body rotates from the first rotation position to the second rotation position, the angle of rotation of the hanging component ranges from 6° to 10°.

[0011] In some embodiments of this application, the suspension body has a positioning part. The engine mounting bracket has a limiting part. Both the positioning part and the limiting part are provided with through holes. The suspension body also includes a third rotation position. When the suspension body rotates to the third rotation position, the through holes on the limiting part and the through holes on the positioning part at least partially overlap along the width direction of the motorcycle. The angle of rotation of the suspension body from the third rotation position to the first rotation position and the second rotation position is substantially the same.

[0012] In some embodiments of this application, the damping of the connecting arm rotating relative to the engine assembly is greater than the damping of the suspension body rotating relative to the engine mounting bracket.

[0013] In some embodiments of this application, the axis of rotation of the suspension body relative to the engine mounting bracket is defined as the first axis. The axis of rotation of the connecting arm relative to the engine assembly is defined as the second axis. The axis of the middle cross tube is defined as the third axis. The distance from the first axis to the second axis is greater than the distance from the first axis to the third axis.

[0014] In this application, the engine assembly is rotatably connected to the frame via a suspension bracket, wherein the suspension body of the suspension bracket is rotatably connected to the engine mounting bracket of the frame. The middle cross tube of the frame is located between the first and second limiting arms of the suspension bracket. When the suspension bracket rotates relative to the frame, the first and second limiting arms can respectively engage with the middle cross tube to limit the range of rotation of the suspension bracket relative to the engine mounting bracket, thereby limiting the range of motion of the engine assembly, reducing vibration, impact and noise, and helping to reduce the dynamic load on various parts of the motorcycle, thus improving the ride smoothness of the entire vehicle. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0016] Figure 1 This is a schematic diagram of the structure of a motorcycle provided in one embodiment of this application;

[0017] Figure 2 for Figure 1 A structural diagram of a motorcycle with omitted parts;

[0018] Figure 3 for Figure 2 Structural diagram of the central suspension component;

[0019] Figure 4 for Figure 2 A structural diagram showing the coordination between the central suspension components, suspension installation fixtures, and part of the vehicle frame;

[0020] Figure 5 for Figure 4 A schematic diagram of the structure when the hanging installation fixtures are disassembled. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0023] Furthermore, the terms “first,” “second,” “third,” etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] See Figure 1 and Figure 2 One embodiment of this application provides a motorcycle 100. The motorcycle 100 includes a frame 10, a running gear 20, a suspension system 30, a power system 40, and a body panel 50. The running gear 20 includes a front wheel 21 and a rear wheel 22, which are at least partially located below the frame 10 and rotatably connected to the frame 10 via the suspension system 30. The power system 40 is at least partially mounted on and fixedly connected to the frame 10, and is drively connected to the rear wheel 22. The body panel 50 is at least partially supported by the frame 10.

[0026] For ease of description, the following are also defined: Figure 1 The directions shown as front, back, left, right, up, and down refer to the front, back, left, right, up, and down directions of the motorcycle 100. In the description of this application, the length direction of the motorcycle 100 is... Figure 1 The forward and backward directions shown indicate that the height direction of the motorcycle 100 is... Figure 1 The vertical direction shown corresponds to the width direction of the motorcycle 100. Figure 1 The left and right directions are shown.

[0027] See Figure 2 In some embodiments, the frame 10 includes a front support bracket 11, a rear support bracket 12, and a center cross tube 13. The center cross tube 13 is located between the front support bracket 11 and the rear support bracket 12, and is fixedly connected to both the front support bracket 11 and the rear support bracket 12. Specifically, the rear end of the front support bracket 11 is connected to the front side of the center cross tube 13, and the front end of the rear support bracket 12 is connected to the rear side of the center cross tube 13. In some embodiments, the frame 10 also includes a head tube 14. The head tube 14 is connected to the front side of the front support bracket 11. The handlebars of the motorcycle 100 are connected to the head tube 14.

[0028] In some embodiments, the front wheel 21 is at least partially located under the front support bracket 11, and the rear wheel 22 is at least partially located under the rear support bracket 12.

[0029] In some embodiments, the suspension system 30 includes a front shock absorber 31 and a rear shock absorber 32. The front shock absorber 31 is at least partially located between the front wheel 21 and the head tube 14, and is connected to both the front wheel 21 and the head tube 14. The rear shock absorber 32 is at least partially located between the rear wheel 22 and the rear support bracket 12, and is connected to both the rear wheel 22 and the rear support bracket 12.

[0030] See Figures 1 to 3 In some embodiments, the power system 40 is supported by the frame 10 and driven to the rear wheel 22. The power system 40 includes an engine assembly 41, which is driven to the rear wheel 22 to drive the rear wheel 22 to rotate. When the rear wheel 22 moves up and down, the engine assembly 41 moves up and down accordingly.

[0031] In some embodiments, the frame 10 further includes an engine mounting bracket 15. The engine mounting bracket 15 is at least partially located behind the center cross tube 13 and connected to the rear support bracket 12. The powertrain 40 also includes a suspension member 42. The engine assembly 41 is rotatably connected to the frame 10 via the suspension member 42. The suspension member 42 includes a suspension body 421, a first limiting arm 422, a second limiting arm 423, and a connecting arm 424. The suspension body 421 is rotatably connected to the engine mounting bracket 15. The connecting arm 424 is located on one side of the suspension body 421. The connecting arm 424 is rotatably connected to the engine assembly 41. The first limiting arm 422 and the second limiting arm 423 are located on the side of the suspension body 421 away from the connecting arm 424.

[0032] Specifically, when the suspension component 42 is installed with the engine mounting bracket 15 and the engine assembly 41 respectively, the connecting arm 424 is located on the rear side of the suspension body 421, and the first limiting arm 422 and the second limiting arm 423 are located on the front side of the suspension body 421.

[0033] Furthermore, when the engine assembly 41 is connected to the engine mounting bracket 15 and the engine assembly 41 respectively via the hanger 42, the middle horizontal tube 13 is located between the first limiting arm 422 and the second limiting arm 423.

[0034] This configuration allows the first limiting arm 422 and the second limiting arm 423 to engage with the middle cross tube 13 when the suspension component 42 rotates relative to the frame 10, thereby limiting the range of rotation of the suspension component 42 relative to the engine mounting bracket 15, thus limiting the range of motion of the engine assembly 41, reducing vibration, impact and noise, and helping to reduce the dynamic load on various parts of the motorcycle 100, thereby improving the ride smoothness of the entire vehicle.

[0035] See Figure 4 and Figure 5In some embodiments, the axis of rotation of the suspension body 421 relative to the engine mounting bracket 15 is defined as the first axis L1, the axis of rotation of the connecting arm 424 relative to the engine assembly 41 is defined as the second axis L2, and the axis of the middle horizontal tube 13 is defined as the third axis L3, for the convenience of the following description.

[0036] Understandably, in some embodiments, the first limiting arm 422 and the second limiting arm 423 are respectively connected to the hanging body 421. Specifically, the first limiting arm 422 and the second limiting arm 423 are distributed at intervals along the first axis L1. In other embodiments, the first limiting arm 422 and the second limiting arm 423 are configured as a single unit, and then the first limiting arm 422 and the second limiting arm 423 are connected to the hanging body 421.

[0037] In some embodiments, the damping of the connecting arm 424 relative to the engine assembly 41 is greater than the damping of the suspension body 421 relative to the engine mount 15. Specifically, damping elements are provided between the engine assembly 41 and the connecting arm 424, and between the suspension body 421 and the engine mount 15, with the damping element between the engine assembly 41 and the connecting arm 424 providing greater rotational damping; alternatively, a damping element may be provided only between the engine assembly 41 and the connecting arm 424.

[0038] Therefore, when the engine assembly 41 moves up and down, the relative positions of the hanger 42 and the engine assembly 41 are roughly fixed, so that the engine assembly 41 drives the hanger 42 to rotate relative to the engine mounting bracket 15, which facilitates the limiting cooperation between the hanger 42 and the middle horizontal tube 13; and when the hanger 42 is restricted by the middle horizontal tube 13 and rotates to the limit position, the engine assembly 41 can rotate relative to the connecting arm 424, thereby reducing the impact transmitted to the engine assembly 41 through the connecting arm 424, reducing the vibration of the engine assembly 41, and reducing noise.

[0039] In other embodiments, the connection between the engine assembly 41 and the connecting arm 424 can be an interference fit or similar method to increase the rotational damping between the engine assembly 41 and the connecting arm 424.

[0040] In some embodiments, the distance from the first axis L1 to the second axis L2 is greater than the distance from the first axis L1 to the third axis L3. Therefore, when the rear wheel 22 moves up and down significantly, causing the engine assembly 41 to move up and down significantly, the first limiting arm 422 and the second limiting arm 423 rotate to engage with the middle cross tube 13 with a smaller range of motion. This allows the engine assembly to have a sufficient range of motion while reducing the rotational space required for the suspension member 42 to engage with the middle cross tube 13, which helps to reduce the space occupied by the suspension member 42 within the motorcycle 100 and improves space utilization.

[0041] See Figure 2and Figure 3 In some embodiments, the suspension body 421 is configured to rotate relative to the engine mount 15 to a first rotational position or a second rotational position. When the suspension body 421 is in the first rotational position, the first limiting arm 422 abuts against the middle cross tube 13. When the suspension body 421 is in the second rotational position, the second limiting arm 423 abuts against the middle cross tube 13. Rotation of the suspension body 421 causes the first limiting arm 422 and the second limiting arm 423 to abut against the middle cross tube 13 respectively, thereby allowing the suspension body 421 to rotate between the first and second rotational positions to limit the range of vertical movement of the engine assembly 41.

[0042] In some embodiments, when the suspension body 421 rotates from the first rotation position to the second rotation position, the angle of rotation of the suspension member 42 is in the range of 6° to 10°, so as to limit the range of vertical movement of the engine assembly 41 and avoid the engine assembly 41 from moving too much vertically.

[0043] In some embodiments, the suspension body 421 is configured to rotate relative to the engine mount 15 to a third rotation position. The angle of rotation of the suspension body 421 from the third rotation position to the first rotation position and the second rotation position is substantially the same. The third rotation position can be understood as the midpoint between the first rotation position and the second rotation position.

[0044] When the main body 421 is in the third rotation position, it can be the initial position of the suspension component 42 being assembled onto the engine mounting bracket 15. The stroke of the main body 421 rotating to the first rotation position and rotating to the second rotation position are approximately equal, which can make the vertical movement range of the engine assembly 41 approximately equal.

[0045] As an example, if the angle of rotation of the hanging body 421 from the first rotation position to the second rotation position is between 6° and 10°, then the rotation angle of the hanging body 421 from the third rotation position to the first rotation position is about 3° to 5°, and the rotation angle of the hanging body 421 from the third rotation position to the second rotation position is about 3° to 5°.

[0046] See Figures 2 to 4In some embodiments, the first limiting arm 422 includes a first arm body 4221 and a first buffer block 4222. The first arm body 4221 is fixed to the suspension body 421. The first buffer block 4222 is disposed on the side of the first arm body 4221 near the middle horizontal tube 13. The first buffer block 4222 is constructed to be able to withstand the applied force and deform elastically. The first limiting arm 422 abuts against the middle horizontal tube 13 through the first buffer block 4222 to limit the engagement with the middle horizontal tube 13, and the first buffer block 4222 can be elastically deformed by the compression of the first arm body 4221 and the middle horizontal tube 13, thereby absorbing the impact between the first limiting arm 422 and the middle horizontal tube 13, which helps to reduce the impact on the engine assembly 41 and reduce the vibration of the engine assembly 41.

[0047] The second limiting arm 423 includes a second arm body 4231 and a second buffer block 4232. The second arm body 4231 is fixed to the suspension body 421. The second buffer block 4232 is located on the side of the second arm body 4231 near the middle horizontal tube 13. The second buffer block 4232 is constructed to be able to withstand the applied force and deform elastically. The second limiting arm 423 abuts against the middle horizontal tube 13 through the second buffer block 4232 to limit the engagement with the middle horizontal tube 13, and the second buffer block 4232 can be elastically deformed by the compression of the second arm body 4231 and the middle horizontal tube 13, thereby absorbing the impact between the second limiting arm 423 and the middle horizontal tube 13, which helps to reduce the impact on the engine assembly 41 and reduce the vibration of the engine assembly 41.

[0048] As an example, the first buffer block 4222 and the second buffer block 4232 can be made of rubber to allow for elastic deformation under pressure and to return to their shape after the pressure is removed so that they can be used for cushioning again. In addition, when the hanging body 421 rotates to the first rotation position, the first buffer block 4222 is compressed by 3 mm to 5 mm; when the hanging body 421 rotates to the second rotation position, the second buffer block 4232 is compressed by 3 mm to 5 mm.

[0049] Understandably, in some embodiments, the first buffer block 4222 can be snapped onto the first arm body 4221 or fixed by bolts. The second buffer block 4232 can be snapped onto the second arm body 4231 or fixed by bolts.

[0050] In some embodiments, the first arm body 4221 has a first support plate 4221a and a first connecting plate 4221b. Two first support plates 4221a are provided. The two first support plates 4221a are fixed to the hanging body 421 at intervals along a first axis L1. The first connecting plates 4221b are respectively connected to the two first support plates 4221a. A first buffer block 4222 is connected to the first connecting plate 4221b. The first support plates 4221a provide support for the first connecting plate 4221b to abut against the middle horizontal tube 13 via the first buffer block 4222. The cooperation between the first connecting plate 4221b and the first support plates 4221a ensures that the first arm body 4221 has sufficient structural strength while also reducing weight.

[0051] The second arm main body 4231 has a second support plate 4231a and a second connecting plate 4231b. Two second support plates 4231a are provided. The two second support plates 4231a are fixed to the hanging main body 421 at intervals along the first axis L1. The second connecting plates 4231b are respectively connected to the two second support plates 4231a. A second buffer block 4232 is connected to the second connecting plate 4231b. The second support plates 4231a provide support for the second connecting plate 4231b to abut against the central horizontal tube 13 via the second buffer block 4232. The cooperation between the second connecting plate 4231b and the second support plate 4231a ensures that the second arm main body 4231 has sufficient structural strength while also reducing weight.

[0052] It is understood that in some embodiments, the first support plate 4221a and the second support plate 4231a are arranged perpendicular to the first axis L1, and the first connecting plate 4221b and the second connecting plate 4231b are arranged parallel to the first axis L1.

[0053] In some embodiments, the width of the first support plate 4221a and the width of the second support plate 4231a gradually decrease along the radial direction away from the first axis L1. The widths of the first and second support plates 4221a and 4231a refer to the distance between the two sides of the first and second support plates 4221a when viewed along the first axis L1, respectively. The thicknesses of the first and second support plates 4221a and 4231a refer to the distance between the two sides of the first and second support plates 4221a when viewed perpendicular to the first axis L1, respectively.

[0054] Along the radial direction of the first axis L1, the portion of the first support plate 4221a closer to the hanging body 421 is wider, and its structural strength is greater. This makes it difficult for the first support plate 4221a to bend when the first limiting arm 422 abuts against the middle horizontal tube 13, thus improving the stability of the limiting fit between the first limiting arm 422 and the middle horizontal tube 13. Similarly, along the radial direction of the first axis L1, the portion of the second support plate 4231a closer to the hanging body 421 is wider, and its structural strength is greater. This makes it difficult for the second support plate 4231a to bend when the second limiting arm 423 abuts against the middle horizontal tube 13, thus improving the stability of the limiting fit between the second limiting arm 423 and the middle horizontal tube 13.

[0055] In some embodiments, the contour of the contact surface between the first buffer block 4222 and the middle horizontal tube 13 is substantially consistent with the outer contour of the middle horizontal tube 13, thereby increasing the contact area between the first buffer block 4222 and the middle horizontal tube 13 and improving the buffering effect of the first buffer block 4222. Similarly, the contour of the contact surface between the second buffer block 4232 and the middle horizontal tube 13 is substantially consistent with the outer contour of the middle horizontal tube 13, thereby increasing the contact area between the second buffer block 4232 and the middle horizontal tube 13 and improving the buffering effect of the second buffer block 4232.

[0056] See Figure 4 and Figure 5 In some embodiments, the suspension body 421 has a positioning portion 4211. The engine mounting bracket 15 has a limiting portion 151. Both the positioning portion 4211 and the limiting portion 151 are provided with through holes. When the suspension body 421 rotates to the third rotation position, the through holes on the limiting portion 151 and the through holes on the positioning portion 4211 at least partially overlap along the width direction of the motorcycle 100.

[0057] When the through hole on the limiting part 151 and the through hole on the positioning part 4211 overlap at least partially along the width direction of the motorcycle 100, the suspension mounting fixture 425 for mounting the suspension member 42 can directly penetrate the through hole on the limiting part 151 and the through hole on the positioning part 4211, thereby fixing the suspension body 421 to the third rotation position under the restriction of the suspension mounting fixture 425, so that the initial position of assembling the suspension member 42 onto the engine mounting bracket 15 is set as the state when the suspension body 421 is in the third rotation position.

[0058] In other embodiments, the third rotational position of the suspension body 421 may also be another position between the first rotational position and the second rotational position.

[0059] In some embodiments, the hanging mounting fixture 425 includes a fixing pin 4251 and an auxiliary locking block 4252. The fixing pin 4251 can pass directly through the through hole on the limiting part 151 and the through hole on the positioning part 4211 to pre-fix the hanging member 42 relative to the engine mounting bracket 15. After the fixing pin 4251 is installed in place, the auxiliary locking block 4252 can be inserted radially between the limiting part 151 and the positioning part 4211 along the fixing pin 4251 to further restrict the possibility of movement of the limiting part 151 relative to the positioning part 4211, thereby fixing the hanging member 42 and the engine mounting bracket 15.

[0060] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A motorcycle, comprising: A frame, the frame including a front support bracket, a rear support bracket and a middle cross tube, the middle cross tube being located between the front support bracket and the rear support bracket and being fixedly connected to the front support bracket and the rear support bracket respectively; A walking system, the walking system including a rear wheel located at least partially below the rear support bracket; A body panel, said body panel being at least partially supported by the vehicle frame; A powertrain system, comprising an engine assembly supported by the chassis and driven to the rear wheels; The vehicle frame is characterized by further including an engine mounting bracket, which is at least partially located behind the center cross tube and connected to the rear support bracket. The power system also includes a suspension component, and the engine assembly is connected to the engine mounting bracket via the suspension component. The suspension component includes a suspension body, a first limiting arm, a second limiting arm, and a connecting arm. The connecting arm is located on one side of the suspension body, and the first limiting arm and the second limiting arm are located on the side of the suspension body away from the connecting arm. The suspension body is rotatably connected to the engine mounting bracket, the connecting arm is rotatably connected to the engine assembly, and the center cross tube is located between the first limiting arm and the second limiting arm.

2. The motorcycle according to claim 1, characterized in that, The first limiting arm includes a first arm body and a first buffer block. The first buffer block is located on the side of the first arm body near the middle horizontal tube. The first buffer block is constructed to be able to withstand the force and deform elastically. The second limiting arm includes a second arm body and a second buffer block. The second buffer block is located on the side of the second arm body near the middle horizontal tube and is configured to withstand the force and deform elastically.

3. A motorcycle as claimed in claim 2, characterised in that The axis of rotation of the suspension body relative to the engine mounting bracket is defined as the first axis. The first arm body has a first support plate and a first connecting plate. There are two first support plates, which are fixed to the hanging body at intervals along the first axis. The first connecting plate connects the two first support plates respectively, and the first buffer block is connected to the first connecting plate. The second arm body has a second support plate and a second connecting plate. There are two second support plates, which are fixed to the hanging body at intervals along the first axis. The second connecting plate connects the two second support plates respectively, and the second buffer block is connected to the second connecting plate.

4. A motorcycle as claimed in claim 3, characterized in that Along the radial direction of the first axis and away from the first axis, the widths of the first support plate and the second support plate gradually decrease.

5. A motorcycle as claimed in claim 2, characterized in that The contour of the contact surface between the first buffer block and the middle horizontal tube is basically consistent with the outer contour of the middle horizontal tube, and the contour of the contact surface between the second buffer block and the middle horizontal tube is basically consistent with the outer contour of the middle horizontal tube.

6. A motorcycle as claimed in claim 1, characterized in that The suspension body is configured to rotate relative to the engine mounting bracket to a first rotation position or a second rotation position. When the main body of the suspension is in the first rotation position, the first limiting arm abuts against the middle horizontal tube; When the main body of the suspension is in the second rotation position, the second limiting arm abuts against the middle horizontal tube.

7. The motorcycle according to claim 6, characterized in that, When the main body of the suspension rotates from the first rotation position to the second rotation position, the angle of rotation of the suspension component ranges from 6° to 10°.

8. A motorcycle as claimed in claim 6, characterized in that The suspension body has a positioning part, the engine mounting bracket has a limiting part, and both the positioning part and the limiting part are provided with through holes. The suspension body also includes a third rotation position. When the suspension body rotates to the third rotation position, the through holes on the limiting part and the through holes on the positioning part at least partially overlap along the width direction of the motorcycle. The angle at which the main body of the suspension rotates from the third rotation position to the first rotation position and the second rotation position is basically the same.

9. A motorcycle as claimed in claim 8, characterized in that The axis of rotation of the suspension body relative to the engine mounting bracket is defined as the first axis, the axis of rotation of the connecting arm relative to the engine assembly is defined as the second axis, and the axis of the middle horizontal tube is defined as the third axis. The distance from the first axis to the second axis is greater than the distance from the first axis to the third axis.

10. A motorcycle as claimed in claim 1, characterized in that The damping of the connecting arm relative to the engine assembly is greater than the damping of the suspension body relative to the engine mounting bracket.

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