Rear suspension mechanism for a motorcycle

Abstract

This utility model relates to the field of suspension technology, specifically a rear suspension mechanism for a motorcycle, including a rear swingarm and a connecting crossbeam. The connecting crossbeam is fixedly connected to the surface of the rear swingarm. A first connecting rod is threaded through the surface of the connecting crossbeam, and a first threaded sleeve is fitted onto the outer surface of the first connecting rod. A rocker arm is movably connected to the surface of the connecting crossbeam via the first connecting rod. A second connecting rod is threaded through the surface of the rocker arm, and a second threaded sleeve is fitted onto the outer surface of the second connecting rod. A connecting rod is movably connected to the outer surface of the rocker arm via the second connecting rod. This utility model uses a rocker arm to nonlinearly increase the stroke of the shock absorber, causing its stiffness and damping characteristics to change nonlinearly. This allows the rear suspension to change with changes in external impact and vibration; that is, the rear suspension becomes "soft" when the impact is weak and "stiff" when subjected to strong impact, thereby improving comfort.

Description

Technical Field

[0001] This utility model relates to the field of suspension technology, specifically to a rear suspension mechanism for a motorcycle. Background Technology

[0002] The rear suspension of a motorcycle is the mechanism that connects the wheels to the frame. Its function is to reduce the impact caused by road bumps and improve riding comfort and driving stability.

[0003] However, the existing rear suspension system has linear stiffness and damping characteristics of its shock absorbers, which are difficult to change with external impacts and vibrations, thus affecting the comfort of the motorcycle. Utility Model Content

[0004] The purpose of this utility model is to provide a rear suspension mechanism for motorcycles to solve the problem mentioned in the background art that the stiffness and damping characteristics of shock absorbers are linear and difficult to change with external impacts and vibrations, thus affecting the comfort of motorcycles.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rear suspension mechanism for a motorcycle, comprising a rear swingarm and a connecting crossbeam. The connecting crossbeam is fixedly connected to the surface of the rear swingarm. A first connecting rod is passed through the surface of the connecting crossbeam. A first threaded sleeve is fitted onto the outer surface of the first connecting rod. A rocker arm is movably connected to the surface of the connecting crossbeam via the first connecting rod. A second connecting rod is passed through the surface of the rocker arm. A second threaded sleeve is fitted onto the outer surface of the second connecting rod. A connecting rod is movably connected to the outer surface of the rocker arm via the second connecting rod. A third connecting rod is passed through the surface of the rocker arm. A third threaded sleeve is fitted onto the outer surface of the third connecting rod. A connecting seat is fitted onto the outer surface of the third connecting rod. A telescopic rod is fixedly connected to the surface of the connecting seat. A shock absorber is fitted onto the outer surface of the telescopic rod. A shock-absorbing spring is fitted onto the outer surface of the shock absorber.

[0006] Preferably, the rear horizontal forks are distributed in two groups at both ends of the connecting cross bridge, and the rocker arm is composed of three sets of cylindrical sleeves, which are distributed in a triangular shape.

[0007] Preferably, the surface of the connecting cross bridge is fixedly connected with a fixed lug, and the first connecting rod passes through the rocker arm and the fixed lug and is rotatably connected to the first threaded sleeve.

[0008] Preferably, the second connecting rod passes through the connecting rod and the rocker arm and is connected to the second threaded sleeve, and the connecting cross bridge is rotatably connected through the rocker arm and the connecting rod.

[0009] Preferably, the third connecting rod passes through the rocker arm and the connecting seat and is threadedly connected to the third threaded sleeve, and the connecting seat is rotatably connected to the rocker arm through the third connecting rod and the third threaded sleeve.

[0010] Preferably, the two ends of the shock-absorbing spring are abutting and connected to the surfaces of the shock absorber and the connecting seat, and the telescopic rod is elastically slidably connected to the shock absorber through the shock-absorbing spring and the shock absorber.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By using a rocker arm, the stroke of the shock absorber can be increased nonlinearly, so that its stiffness and damping characteristics change nonlinearly. It can change with the changes of external impact and vibration. That is, the rear suspension becomes "soft" when the impact is not strong and becomes "hard" when subjected to strong impact, thereby improving comfort. Attached Figure Description

[0013] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0014] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0015] Figure 3 This is a partial three-dimensional bottom view of the structure of this utility model;

[0016] Figure 4 This is a partial three-dimensional exploded view of the structure of this utility model.

[0017] In the diagram: 1. Rear swingarm; 2. Connecting crossbar; 3. Shock absorber; 4. Shock absorber spring; 5. Rocker arm; 6. First connecting rod; 61. First threaded sleeve; 7. Connecting rod; 71. Second connecting rod; 72. Second threaded sleeve; 8. Telescopic rod; 81. Connecting seat; 82. Third connecting rod; 83. Third threaded sleeve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 One embodiment provided by this utility model:

[0020] A rear suspension mechanism for a motorcycle includes a rear swingarm 1 and a connecting crossbeam 2. The connecting crossbeam 2 is fixedly connected to the surface of the rear swingarm 1. A first connecting rod 6 is threaded through the surface of the connecting crossbeam 2. A first threaded sleeve 61 is fitted onto the outer surface of the first connecting rod 6. A rocker arm 5 is movably connected to the surface of the connecting crossbeam 2 via the first connecting rod 6. A second connecting rod 71 is threaded through the surface of the rocker arm 5. A second threaded sleeve 72 is fitted onto the outer surface of the second connecting rod 71. A connecting rod 7 is movably connected to the outer surface of the rocker arm 5 via the second connecting rod 71. A third connecting rod 82 is threaded through the surface of the rocker arm 5. The third threaded sleeve 83 is threaded onto the surface of the third connecting rod 82. A connecting seat 81 is fitted onto the outer surface of the connecting seat 81. A telescopic rod 8 is fixedly connected to the surface of the connecting seat 81. A shock absorber 3 is fitted onto the outer surface of the telescopic rod 8. A shock absorber spring 4 is fitted onto the outer surface of the shock absorber 3. The rear horizontal fork 1 and the connecting crossbeam 2 are connected. The rear horizontal fork 1 and the motorcycle frame are rotatably connected. With the rotatable connection between the connecting crossbeam 2 and the rocker arm 5, the shock absorber spring 4 and the shock absorber 3 are connected. The shock absorber 3 and the telescopic rod 8 are connected in a sliding manner to achieve shock absorption. The connection method between the shock absorber 3 and the telescopic rod 8 is existing technology and will not be described in detail here.

[0021] Furthermore, the rear horizontal fork 1 is distributed in two groups at both ends of the connecting cross bridge 2, and the rocker arm 5 is composed of three sets of cylindrical sleeves, which are distributed in a triangular shape. Through the connection between the rear horizontal fork 1 and the connecting cross bridge 2, the rear horizontal fork 1 achieves the overall support and control effect on the connecting cross bridge 2.

[0022] Furthermore, a fixed lug is fixedly connected to the surface of the connecting cross bridge 2. The first connecting rod 6 passes through the rocker arm 5 and the fixed lug and is threadedly rotatably connected to the first threaded sleeve 61. Through the rotatable connection between the connecting cross bridge 2 and the rocker arm 5, the connection between the first connecting rod 6 and the first threaded sleeve 61 is achieved, thus achieving the connection support effect between the rocker arm 5 and the connecting cross bridge 2.

[0023] Furthermore, the second connecting rod 71 passes through the connecting rod 7 and the rocker arm 5 and is connected to the second threaded sleeve 72. The connecting cross bridge 2 is rotatably connected through the rocker arm 5 and the connecting rod 7. Through the connection of the connecting rod 7 and the second connecting rod 71, the connection and support effect between the rocker arm 5 and the connecting rod 7 is achieved under the connection of the second connecting rod 71 and the second threaded sleeve 72.

[0024] Furthermore, the third connecting rod 82 passes through the rocker arm 5 and the connecting seat 81 and is threadedly connected to the third threaded sleeve 83. The connecting seat 81 is rotatably connected to the rocker arm 5 through the third connecting rod 82 and the third threaded sleeve 83. Through the connection of the third connecting rod 82 and the third threaded sleeve 83, the rotatable connection support between the connecting seat 81 and the rocker arm 5 is realized under the action of the third connecting rod 82.

[0025] Furthermore, the two ends of the damping spring 4 are abutted and connected to the surfaces of the shock absorber 3 and the connecting seat 81. The telescopic rod 8 is elastically slidably connected to the shock absorber 3 through the damping spring 4. Under the connection of the telescopic rod 8 and the connecting seat 81, the connection between the telescopic rod 8 and the shock absorber 3 is achieved through the action of the damping spring 4, thus realizing the elastic sliding effect between the shock absorber 3 and the telescopic rod 8.

[0026] Working principle: When performing shock absorption on the motorcycle, the rear horizontal fork 1 is connected to the frame, and the connecting bridge 2 and rocker arm 5 are connected. The rocker arm 5 and the connecting rod 7 are rotated, and the rocker arm 5 and the connecting seat 81 are rotated. This causes the stiffness and damping characteristics to change non-linearly, which can change with the changes in external impact and vibration, thus improving comfort.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rear suspension mechanism for a motorcycle, comprising a rear swingarm (1) and a connecting crossbeam (2), characterized in that: The connecting crossbar (2) is fixedly connected to the surface of the rear horizontal fork (1). A first connecting rod (6) is connected through the surface of the connecting crossbar (2). A first threaded sleeve (61) is fitted onto the outer surface of the first connecting rod (6). A rocker arm (5) is movably connected to the surface of the connecting crossbar (2) through the first connecting rod (6). A second connecting rod (71) is connected through the surface of the rocker arm (5). A second threaded sleeve (72) is fitted onto the outer surface of the second connecting rod (71) through the thread. The outer surface of the rocker arm (5) is connected to the second connecting rod (71). A connecting rod (7) is movably connected to the surface of the rocker arm (5) via a second connecting rod (71). A third connecting rod (82) is connected through the surface of the rocker arm (5). A third threaded sleeve (83) is threaded onto the outer surface of the third connecting rod (82). A connecting seat (81) is fitted onto the outer surface of the third connecting rod (82). A telescopic rod (8) is fixedly connected to the surface of the connecting seat (81). A shock absorber (3) is fitted onto the outer surface of the telescopic rod (8). A shock-absorbing spring (4) is fitted onto the outer surface of the shock absorber (3).

2. The rear suspension mechanism for a motorcycle according to claim 1, characterized in that: The rear flat fork (1) is distributed in two groups at both ends of the connecting cross bridge (2), and the rocker arm (5) is composed of three sets of cylindrical sleeves, which are distributed in a triangular shape.

3. The rear suspension mechanism for a motorcycle according to claim 1, characterized in that: The surface of the connecting cross bridge (2) is fixedly connected with a fixed lug, and the first connecting rod (6) passes through the rocker arm (5) and the fixed lug and is threadedly rotatably connected to the first threaded sleeve (61).

4. The rear suspension mechanism for a motorcycle according to claim 1, characterized in that: The second connecting rod (71) passes through the connecting rod (7) and the rocker arm (5) and is connected to the second threaded sleeve (72). The connecting cross bridge (2) is rotatably connected through the rocker arm (5) and the connecting rod (7).

5. The rear suspension mechanism for a motorcycle according to claim 1, characterized in that: The third connecting rod (82) passes through the rocker arm (5) and the connecting seat (81) and is threadedly connected to the third threaded sleeve (83). The connecting seat (81) is rotatably connected to the rocker arm (5) through the third connecting rod (82) and the third threaded sleeve (83).

6. The rear suspension mechanism of a motorcycle according to claim 1, characterized in that: The two ends of the shock-absorbing spring (4) are abutted and connected to the surfaces of the shock absorber (3) and the connecting seat (81), and the telescopic rod (8) is elastically slidably connected to the shock absorber (3) through the shock-absorbing spring (4).

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