A multi-link front suspension structure for motorcycles

Abstract

This utility model relates to the technical field of motorcycles, and in particular to a multi-link front suspension structure for motorcycles, which can provide good support, decompose forces in multiple stages, buffer and absorb the impact vibrations of uneven road surfaces, and provide reliable riding stability and comfort. It includes a frame, two front fork shock absorbers, a lower connecting seat, an upper connecting seat, a support component, a first shock absorber, and a second shock absorber. The lower parts of the two front fork shock absorbers are connected via the lower connecting seat, and the top of the front fork shock absorbers is connected to the upper connecting seat. A bearing is provided in the middle of the upper connecting seat, and a pivot is provided at the right end of the frame. The right end of the frame is connected to the upper connecting seat via the pivot and bearing, allowing the upper connecting seat to rotate left and right relative to the frame, facilitating motorcycle steering. The support component is installed under the frame and is hinged to the lower connecting seat. The first and second shock absorbers are mounted on the support component.

Description

Technical Field

[0001] This utility model relates to the technical field of motorcycles, and in particular to a multi-link front suspension structure for motorcycles. Background Technology

[0002] Motorcycles are a popular mode of transportation in modern times. Due to their advantages such as low fuel consumption, low emissions, good maneuverability, less restriction by road conditions, and convenient parking, they have become the main means of transportation for people to travel, work, and shop. The front suspension device of a motorcycle is installed between the motorcycle frame and the front wheel axle to reduce the impact of the front wheel on the frame and ensure safe driving. A novel heavy-duty motorcycle, as disclosed in prior art announcement CN202574498U, includes a double-beam cradle-type frame, an upper connecting plate, a lower connecting plate, and two parallel front shock absorbers. Each front shock absorber consists of a shock-absorbing guide rod located at the top and a shock-absorbing base cylinder located at the bottom. The upper and lower beams are fixedly connected at the front end of the frame via a vertical tube. The upper connecting plate is movably connected to the vertical tube at its middle position, and mounting brackets are provided at both ends of the upper connecting plate. The upper end of the shock-absorbing guide rod is hinged to the mounting bracket via a pin. The lower connecting plate is located on the upper part of the base cylinder of the front shock absorber. A front rocker arm and an additional shock absorber are also provided. The front end of the front rocker arm is connected to the lower connecting plate via a universal ball joint structure, and the rear end is hinged between the left and right lower beams via a pin. The upper end of the additional shock absorber is hinged to the upper beam via a pin, and the lower end is hinged to the front rocker arm via a pin. However, in actual use, the movement trajectory of the joystick tip is arc-shaped, while the movement trajectory of the lower connecting plate is straight. Therefore, when the deformation of the additional damping is large, the ball joint may detach from the lower connecting plate, causing the additional damping to fail. Furthermore, the extension and retraction directions of the additional damper and the left and right front dampers are inconsistent, resulting in poor shock absorption. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a multi-link front suspension structure for motorcycles that can provide good support, decompose forces in multiple stages, buffer and absorb the impact and vibration of uneven road surfaces, and provide reliable riding support stability and comfort.

[0004] This utility model discloses a multi-link front suspension structure for motorcycles, including a frame, two front fork shock absorbers, a lower connecting seat, an upper connecting seat, a support component, a first shock absorber, and a second shock absorber. The lower parts of the two front fork shock absorbers are connected via the lower connecting seat, and the top of the front fork shock absorbers are connected to the upper connecting seat. A bearing is provided in the middle of the upper connecting seat, and a pivot is provided at the right end of the frame. The right end of the frame is connected to the upper connecting seat via the pivot and the bearing, allowing the upper connecting seat to rotate left and right relative to the frame, facilitating motorcycle steering. The support component is installed under the frame and is hinged to the lower connecting seat. The first and second shock absorbers are mounted on the support component. Through the cooperation of the support component, the first shock absorber, and the second shock absorber, the entire motorcycle can slowly sink during emergency braking, turning, or cornering, with minimal changes in wheelbase and fore-end distance. It provides excellent support, decomposes, buffers, and absorbs the impact vibrations from uneven road surfaces in multiple stages, and ensures reliable riding stability and comfort. This effectively solves the problem of overall motorcycle support stability and reliability during uneven road surfaces and emergency braking, turning, or cornering.

[0005] Preferably, the supporting components include a rocker arm, two first struts, a cross shaft, two connecting rods, and a second connecting rod. The right end of the rocker arm is hinged to the middle of the lower connecting seat. The two first struts are fixedly installed at the front and rear ends of the bottom of the frame. A cross shaft is installed between the lower ends of the two first struts. The connecting rods are hinged to the front and rear ends of the cross shaft. The second connecting rod is hinged to the lower end of the connecting rod. The seat end of the rocker arm is also provided with a bearing for hinged connection of the second connecting rod. The first struts, cross shaft, and second connecting rod can support the rocker arm, increase the connection strength between the frame and the lower connecting seat, improve the structural strength, improve the chance of frame riser tube breakage, and improve the safety and comfort of heavy-duty motorcycles.

[0006] Preferably, the first shock-absorbing component includes two diagonal struts, a second transverse shaft, and two center shock absorbers. The diagonal struts are connected to the front and rear ends of the bottom of the frame and are located to the right of the first strut. The second transverse shaft is installed at the bottom of the diagonal strut. The tops of the two center shock absorbers are rotatably connected to the second transverse shaft, and the bottoms of the center shock absorbers are rotatably connected to the top of the rocker arm. The front fork shock absorber and the center shock absorbers support the entire front of the vehicle, providing high handling stability. Furthermore, the front fork shock absorber and the center shock absorbers extend and retract in the same direction, resulting in good shock absorption and a multi-level force decomposition effect. This buffers and absorbs the impact vibrations from uneven road surfaces, ensuring reliable riding support stability and comfort.

[0007] Preferably, the second shock-absorbing component includes a trailer and a small-pressure shock absorber. The trailer is installed at the bottom of the frame, located to the right of the first strut. The small-pressure shock absorber is installed at the bottom of the trailer, and the top of the small-pressure shock absorber contacts the left side of the bottom of the rocker arm. When an impact occurs, the rocker arm rotates on the second link. The right end of the rocker arm rotates upward, while the left end rotates downward to compress the small-pressure shock absorber, further absorbing shock and ensuring a multi-stage decomposition effect, thereby improving the stability of the riding support.

[0008] Preferably, it also includes two connecting struts and two intermediate connecting rods. The connecting struts are installed between the lower end of the first strut and the lower side wall of the diagonal strut, and an intermediate connecting rod connects the middle of the first strut and the diagonal strut. The first strut, the diagonal strut and the connecting strut form a triangular structure. At the same time, the intermediate connecting rods further increase the support between the first strut and the diagonal strut, enhance the structural stability and ensure the support effect.

[0009] Preferably, a positioning groove is provided at the bottom left side of the rocker arm, and the top of the small air pressure shock absorber is located in the positioning groove; the positioning groove can limit the small air pressure shock absorber and prevent it from slipping off.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: through the cooperation of the support component, the first shock-absorbing buffer component and the second shock-absorbing buffer component, the entire vehicle body can slowly sink during emergency braking, turning or bending during operation, with small changes in wheelbase and front extension distance, which can provide good support, decompose the force in multiple stages, buffer and absorb the impact vibration of uneven road surface, and ensure reliable riding support stability and comfort, effectively solving the problem of the stability and reliability of the entire vehicle body support during uneven road surface and emergency braking, turning or bending. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the rear of this utility model;

[0014] Figure 4 This is a schematic diagram of the lower three-dimensional structure of this utility model;

[0015] Figure 5 This is a three-dimensional structural diagram of the left side of this utility model;

[0016] The following are labels in the attached diagram: 1. Frame; 2. Front fork shock absorber; 3. Lower connector; 4. Upper connector; 5. Cradle; 6. First strut; 7. Cross shaft; 8. Link; 9. Second link; 10. Diagonal strut; 11. Second cross shaft; 12. Connecting strut; 13. Center shock absorber; 14. Intermediate link; 15. Trailer; 16. Small air pressure shock absorber. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0018] like Figures 1 to 5 As shown, the lower parts of the two front fork shock absorbers 2 are connected by a lower connecting seat 3, and the top of the front fork shock absorber 2 is connected to an upper connecting seat 4. A bearing is provided in the middle of the upper connecting seat 4. A pivot is provided at the right end of the frame 1. The right end of the frame 1 is connected to the upper connecting seat 4 through the pivot and bearing, so that the upper connecting seat 4 can rotate left and right relative to the frame 1, which facilitates the steering of the motorcycle. The right end of the rocker arm 5 is hinged to the middle of the lower connecting seat 3. Two first support rods 6 are fixedly installed at the front and rear ends of the bottom of the frame 1. A horizontal shaft 7 is installed between the lower ends of the two first support rods 6. A connecting rod 8 is hinged to the front and rear ends of the horizontal shaft 7. A second connecting rod 9 is hinged to the lower end of the connecting rod 8. A bearing is also provided at the seat end of the rocker arm 5 to hinge the second connecting rod 9. The diagonal support rod 10 is connected to the frame. At the front and rear ends of the bottom, the diagonal brace 10 is located to the right of the first brace 6. The bottom end of the diagonal brace 10 is equipped with a second horizontal shaft 11. The tops of the two central shock absorbers 13 are rotatably connected to the second horizontal shaft 11. The bottoms of the central shock absorbers 13 are rotatably connected to the top of the rocker arm 5. The trailer 15 is installed at the bottom of the frame 1, located to the right of the first brace 6. The bottom of the trailer 15 is equipped with a small air pressure shock absorber 16. The top of the small air pressure shock absorber 16 contacts the bottom left side of the rocker arm 5. A positioning groove is opened at the bottom left side of the rocker arm 5. The top of the small air pressure shock absorber 16 is located in the positioning groove. The connecting brace 12 is installed between the lower end of the first brace 6 and the lower side wall of the diagonal brace 10. The middle connecting rod 14 is connected between the middle of the first brace 6 and the diagonal brace 10.

[0019] The first strut 6, the transverse shaft 7, and the second connecting rod 9 support the rocker arm 5, increasing the connection strength between the frame 1 and the lower connecting seat 3, improving structural strength, mitigating the risk of frame seat tube breakage, and enhancing the safety and comfort of heavy-duty motorcycles. The front fork shock absorber 2 and the center shock absorber 13 support the entire front end, providing high handling stability. Furthermore, the front fork shock absorber 2 and the center shock absorber 13 extend and retract in the same direction, resulting in good shock absorption and a multi-stage force decomposition effect, buffering and absorbing the impact vibrations from uneven road surfaces, ensuring reliable riding support stability and comfort. When an impact occurs, the rocker arm 5 rotates on the second connecting rod 9. The right end of the rocker arm 5 rotates upward while the left end rotates downward to compress the small air pressure shock absorber 16, further absorbing shock and ensuring a multi-stage decomposition effect, thus improving the stability of the riding support. The positioning groove can limit the small air pressure shock absorber 16 to prevent slippage. The first support rod 6, the diagonal support rod 10, and the connecting support rod 12 form a triangular structure. At the same time, the middle connecting rod 14 further increases the support between the first support rod 6 and the diagonal support rod 10, enhancing structural stability and ensuring the support effect.

[0020] like Figures 1 to 5As shown, this utility model discloses a multi-link front suspension structure for motorcycles. During operation, the rocker arm 5 is supported by the first strut 6, the transverse shaft 7, and the second link 9, increasing the connection strength between the frame 1 and the lower connecting seat 3. The front fork shock absorber 2 and the center shock absorber 13 support the entire front of the motorcycle, resulting in high handling stability. Furthermore, the front fork shock absorber 2 and the center shock absorber 13 extend and retract in the same direction, providing good shock absorption and creating a multi-level force decomposition effect. This buffers and absorbs the impact vibrations from uneven road surfaces, ensuring reliable riding support stability and comfort. When an impact occurs, the rocker arm 5 rotates on the second link 9, with the right end of the rocker arm 5 rotating upwards while the left end rotates downwards to compress the small air pressure shock absorber 16, further absorbing shock.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-link front suspension structure for motorcycles, characterized in that, The vehicle includes a frame (1), two front fork shock absorbers (2), a lower connecting seat (3), an upper connecting seat (4), a support component, a first shock absorber and a second shock absorber. The lower parts of the two front fork shock absorbers (2) are connected through the lower connecting seat (3), and the top of the front fork shock absorber (2) is connected to the upper connecting seat (4). A bearing is provided in the middle of the upper connecting seat (4). A pivot is provided at the right end of the frame (1). The right end of the frame (1) is connected to the upper connecting seat (4) through the pivot and the bearing, so that the upper connecting seat (4) can rotate left and right relative to the frame (1), which facilitates the steering of the motorcycle. The support component is installed below the frame (1) and is hinged to the lower connecting seat (3). The first shock absorber and the second shock absorber are installed on the support component.

2. The multi-link front suspension structure for motorcycles as described in claim 1, characterized in that, The supporting components include a rocker arm (5), two first struts (6), a horizontal shaft (7), two connecting rods (8) and a second connecting rod (9). The right end of the rocker arm (5) is hinged to the middle of the lower connecting seat (3). The two first struts (6) are fixedly installed at the front and rear ends of the bottom of the frame (1). A horizontal shaft (7) is installed between the lower ends of the two first struts (6). The connecting rods (8) are hinged to the front and rear ends of the horizontal shaft (7). The second connecting rod (9) is hinged to the lower end of the connecting rod (8). The seat end of the rocker arm (5) is also provided with a bearing for hinged connection of the second connecting rod (9).

3. The multi-link front suspension structure for motorcycles as described in claim 2, characterized in that, The first shock absorber includes two diagonal braces (10), a second transverse shaft (11), and two central shock absorbers (13). The diagonal braces (10) are connected to the front and rear ends of the bottom of the frame (1). The diagonal braces (10) are located on the right side of the first support rod (6). The second transverse shaft (11) is installed at the bottom of the diagonal braces (10). The top of the two central shock absorbers (13) is rotatably connected to the second transverse shaft (11). The bottom of the central shock absorbers (13) is rotatably connected to the top of the rocker arm (5).

4. A multi-link front suspension structure for motorcycles as described in claim 2, characterized in that, The second shock absorber includes a trailer (15) and a small air pressure shock absorber (16). The trailer (15) is installed at the bottom of the frame (1) and is located on the right side of the first strut (6). The small air pressure shock absorber (16) is installed at the bottom of the trailer (15). The top of the small air pressure shock absorber (16) contacts the bottom left side of the rocker arm (5).

5. A multi-link front suspension structure for motorcycles as described in claim 3, characterized in that, It also includes two connecting struts (12) and two intermediate connecting rods (14). The connecting struts (12) are installed between the lower end of the first strut (6) and the lower side wall of the diagonal strut (10), and the intermediate connecting rods (14) are connected between the middle of the first strut (6) and the diagonal strut (10).

6. A multi-link front suspension structure for motorcycles as described in claim 4, characterized in that, The bottom left side of the rocker arm (5) has a positioning groove, and the top of the small air pressure shock absorber (16) is located in the positioning groove.

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