Motorcycle frame structure with adaptive damping function

Abstract

This utility model discloses a motorcycle frame structure with adaptive shock absorption function, relating to the technical field of motorcycle suspension and frame structure design. It includes an extension frame, a horizontal frame, and a shock absorber. Vertical rods are equidistantly arranged at the bottom of the horizontal frame, with the bottom of each vertical rod positioned at the top of the extension frame. A pair of pins is rotatably connected to the middle of the vertical rod located in the middle of the extension frame, and a rear swingarm is fixedly mounted at one end of each pin. The main structure of this frame consists of a horizontal frame, an extension frame, and a shock absorber. The vertical rod at the bottom of the horizontal frame connects to the rear swingarm, which is connected to the bottom lug of the shock absorber. An adaptive adjustment component is provided at the top of the extension frame. This adaptive adjustment component can adjust the top fixing point of the shock absorber, significantly improving the flexibility and adaptability of the entire vehicle suspension system. The installation angle of the shock absorber can be adjusted according to different road conditions, loads, or riding styles, thereby changing the effective leverage ratio and working stiffness.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle suspension and frame structure design technology, and in particular to a motorcycle frame structure with adaptive shock absorption function. Background Technology

[0002] The motorcycle frame is the main skeleton connecting the engine, wheels, and body parts. It is usually made of welded steel tubing or aluminum alloy and has the functions of load-bearing and support. Its specific structure includes the main beam, rear swingarm, head tube, support frame, etc., forming a rigid frame. Shock absorbers are installed between the frame and the rear swingarm. Their main function is to absorb and buffer vibrations and impacts transmitted from the road surface, protect the frame, and improve riding comfort and handling stability, so that the vehicle can maintain good performance under various road conditions.

[0003] In existing technology, the lugs on the top of motorcycle shock absorbers are usually fixedly mounted on the top fixing point of the frame, and their position cannot be adjusted. This fixing method has a simple structure, but it has the problem that it cannot flexibly adjust the installation angle of the shock absorber according to different road conditions, loads or driving needs, which limits the adaptability of the suspension system. Since the position of the fixing point cannot be changed, the working stroke, effective leverage ratio and buffer stiffness of the shock absorber are also fixed, making it difficult to balance comfort and handling, and affecting the dynamic performance and riding experience of the whole vehicle in different scenarios. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the prior art, the lugs on the top of the motorcycle shock absorber are usually fixedly installed on the top fixed point of the frame, and the position cannot be adjusted. This fixing method has a simple structure, but it has the problem that it cannot flexibly adjust the installation angle of the shock absorber according to different road conditions, load or driving needs, which limits the adaptability of the suspension system. Since the fixed point position cannot be changed, the working stroke, effective leverage ratio and buffer stiffness of the shock absorber are also fixed, making it difficult to balance comfort and handling, and affecting the dynamic performance and riding experience of the whole vehicle in different scenarios. Therefore, this invention proposes a motorcycle frame structure with adaptive shock absorption function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A motorcycle frame structure with adaptive shock absorption includes an extension frame, a horizontal frame, and a shock absorber. Vertical rods are equidistantly arranged at the bottom of the horizontal frame, with their bottom ends positioned at the top of the extension frame. A pair of pins is rotatably connected to the middle of one of the vertical rods located in the middle of the extension frame. A rear swingarm is fixedly mounted at one end of each pin, and the rear swingarm is used to fix the motorcycle's rear wheel axle. An adaptive adjustment component is provided between the horizontal frame and the rear swingarm. This component controls and changes the installation angle between the shock absorber and the rear swingarm to adjust the effective leverage ratio of the shock absorber, thereby regulating its working stiffness.

[0007] Optionally, the adaptive adjustment component includes a common crossbar, a shifting screw, a micro motor, a bottom pin, and a top pin. The rear rocker arm has a horizontal U-groove at the end away from the top pin, and a bottom pin is fixedly provided at the end of the rear rocker arm near the horizontal U-groove. The bottom pin is rotatably mounted on the bottom ear of the shock absorber.

[0008] Optionally, the top earring of the shock absorber is rotatably connected to a top pin, one end of which is fixedly disposed on the side of the arc-shaped block.

[0009] Optionally, a common crossbar is fixedly provided between the two arc-shaped blocks, and a displacement screw is threaded into the middle position of the common crossbar. The two ends of the displacement screw are sequentially rotatably connected to the side of the edge crossbar and the middle crossbar.

[0010] Optionally, the inner side of the arc-shaped block is provided with an arc-shaped surface, and the side of the arc-shaped block is attached to the side of the horizontal frame.

[0011] Optionally, the edge crossbar and the middle crossbar are fixedly installed on the top of the horizontal frame in sequence, a micro motor is fixedly installed at the end of the displacement screw, and the housing of the micro motor is fixedly installed on the side of the middle crossbar.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The main structure of this frame consists of a horizontal frame, an extension frame, and a shock absorber. The vertical bar at the bottom of the horizontal frame is used to connect the rear swingarm, which is connected to the bottom lug of the shock absorber. The top of the extension frame is equipped with an adaptive adjustment component, which can adjust the top fixing point of the shock absorber, significantly improving the flexibility and adaptability of the entire suspension system. The installation angle of the shock absorber can be adjusted according to different road conditions, loads, or riding styles, thereby changing the effective leverage ratio and working stiffness, balancing comfort and handling. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the adaptive adjustment component.

[0016] Figure 3 This is a structural schematic diagram of the transverse component and its connecting parts.

[0017] In the diagram: 1. Vertical rod; 2. Middle horizontal rod; 3. Horizontal frame; 31. Edge horizontal rod; 32. Extension frame; 4. Rear rocker arm; 41. Horizontal U-groove; 42. Pair pin; 5. Common horizontal rod; 6. Arc block; 61. Top pin; 7. Shock absorber; 8. Bottom pin; 9. Shifting screw; 10. Miniature motor. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-3 The motorcycle frame structure with adaptive shock absorption function includes an extension frame 32, a horizontal frame 3, and a shock absorber 7. Vertical rods 1 are equidistantly arranged at the bottom of the horizontal frame 3. The bottom of the vertical rods 1 is set at the top of the extension frame 32. A pair of pins 42 are rotatably connected to the middle position of the vertical rods 1 located in the middle of the extension frame 32. A rear rocker arm 4 is fixedly arranged at one end of the pair of pins 42. The rear rocker arm 4 is used to fix the rear wheel axle of the motorcycle.

[0020] The shock absorber 7 is a KYB monotube pneumatic shock absorber, mainly composed of a cylinder, piston assembly, piston rod, spring assembly, guide sleeve, sealing assembly, damping valve group, and high-pressure nitrogen chamber. The cylinder is the outer shell, housing the piston and piston rod. The piston rod passes through the guide sleeve and connects to the shock absorber's mounting lugs. A damping hole is formed on the piston, and an internal valve plate controls the flow of oil, thereby generating compression and rebound damping. The shock absorber is externally covered by a helical spring to bear the vehicle's weight and provide basic cushioning; therefore, its detailed structure is not disclosed in this application.

[0021] An adaptive adjustment component is provided between the horizontal frame 3 and the rear rocker arm 4. The adaptive adjustment component controls and changes the installation angle between the shock absorber 7 and the rear rocker arm 4 to achieve the adjustment of the effective lever ratio of the shock absorber 7, thereby adjusting its working stiffness.

[0022] The adaptive adjustment assembly includes a common crossbar 5, a shifting screw 9, a micro motor 10, a bottom pin 8, a top pin 61, and a horizontal U-groove 41 at the end of the rear rocker arm 4 away from the pin 42. The bottom pin 8 is fixedly installed at the end of the rear rocker arm 4 near the horizontal U-groove 41. The bottom pin 8 is rotatably mounted on the bottom lug of the shock absorber 7, and the top lug of the shock absorber 7 is rotatably connected to the top pin 61. One end of the top pin 61 is fixedly mounted on the side of the arc-shaped block 6. The lengths of the bottom pin 8 and the top pin 61 need to be set appropriately so that when the shock absorber 7 is installed, the shock absorber 7 remains in the vertical plane.

[0023] A common crossbar 5 is fixedly installed between the two arc-shaped blocks 6. A displacement screw 9 is screwed into the middle of the common crossbar 5. The two ends of the displacement screw 9 are sequentially rotatably connected to the side of the edge crossbar 31 and the middle crossbar 2. An arc-shaped surface is opened on the inner side of the arc-shaped block 6. The side of the arc-shaped block 6 is attached to the side of the horizontal frame 3. The specific contact position between the arc-shaped block 6 and the horizontal frame 3 is the outer wall of the steel pipe of the horizontal frame 3. The contact position between the horizontal frame 3 and the arc-shaped block 6 is polished into a smooth surface.

[0024] Edge crossbar 31 and middle crossbar 2 are fixedly installed on the top of the horizontal frame 3 in sequence. A micro motor 10 is fixedly installed at the end of the shifting screw 9. The housing of the micro motor 10 is fixedly installed on the side of the middle crossbar 2.

[0025] It should be added that when the controller of the micro motor 10 can be fixed to the housing of the actual motorcycle head, the user can control the micro motor 10 to rotate in both directions according to road conditions.

[0026] The specific implementation steps and principles of this utility model are as follows:

[0027] According to the actual road conditions, the user starts the micro motor 10 to rotate in both directions. The displacement screw 9 drives the arc blocks 6 at both ends of the common crossbar 5 to move laterally along the outer wall of the horizontal frame 3. The arc blocks 6 drive the top pin 61, thereby changing the angle between the top ear of the shock absorber 7 and the horizontal frame 3.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A motorcycle frame structure with adaptive shock absorption function, comprising an extension frame (32), a horizontal frame (3), and a shock absorber (7), characterized in that, The horizontal frame (3) has vertical rods (1) equidistantly arranged at the bottom. The bottom of the vertical rods (1) is set at the top of the extension frame (32). The vertical rods (1) located in the middle position of the extension frame (32) are rotatably connected to a pair of pins (42). One end of the pair of pins (42) is fixedly provided with a rear rocker arm (4). The rear rocker arm (4) is used to fix the rear wheel axle of the motorcycle. An adaptive adjustment component is provided between the horizontal frame (3) and the rear rocker arm (4). The adaptive adjustment component controls and changes the installation angle between the shock absorber (7) and the rear rocker arm (4) to achieve the adjustment of the effective lever ratio of the shock absorber (7) and thus adjust its working stiffness.

2. The motorcycle frame structure with adaptive shock absorption function according to claim 1, characterized in that, The adaptive adjustment assembly includes a common crossbar (5), a shifting screw (9), a micro motor (10), a bottom pin (8), and a top pin (61). The rear rocker arm (4) has a horizontal U-groove (41) at the end away from the top pin (42). The rear rocker arm (4) has a bottom pin (8) fixedly installed at the end near the horizontal U-groove (41). The bottom pin (8) is rotatably mounted on the bottom ear of the shock absorber (7).

3. The motorcycle frame structure with adaptive shock absorption function according to claim 2, characterized in that, The shock absorber (7) has a top earring that is rotatably connected to a top pin (61), one end of which is fixedly set on the side of the arc-shaped block (6).

4. The motorcycle frame structure with adaptive shock absorption function according to claim 2, characterized in that, A common crossbar (5) is fixedly provided between the two arc-shaped blocks (6). A displacement screw (9) is screwed into the middle position of the common crossbar (5). The two ends of the displacement screw (9) are sequentially rotated and connected to the side of the edge crossbar (31) and the middle crossbar (2).

5. The motorcycle frame structure with adaptive shock absorption function according to claim 3, characterized in that, The inner side of the arc-shaped block (6) is provided with an arc-shaped surface, and the side of the arc-shaped block (6) is attached to the side of the horizontal frame (3).

6. The motorcycle frame structure with adaptive shock absorption function according to claim 4, characterized in that, The edge crossbar (31) and the middle crossbar (2) are fixedly installed on the top of the horizontal frame (3) in sequence. A micro motor (10) is fixedly installed at the end of the displacement screw (9). The housing of the micro motor (10) is fixedly installed on the side of the middle crossbar (2).

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