Vehicle damping front fork

Abstract

The utility model belongs to the technical field of vehicle accessory equipment, and relates to a vehicle damping front fork which comprises a main pipe and a fork shoulder, the bottoms of the two sides of the fork shoulder are connected with a pair of dampers, and each damper comprises a fixed cylinder, a movable cylinder, a piston assembly and a damping spring which are coaxially arranged. The top of an inner cavity of the fixing cylinder is provided with an adjusting cavity for adjusting the preload of the damping spring, an adjusting device is arranged on the outer side of the fixing cylinder and communicates with the adjusting cavity through a pipeline, the lower end of the pipeline is connected to the top of the adjusting device, and the upper end of the pipeline is connected to the top of the fixing cylinder. The fork shoulder on the inner side of the fixing cylinder is provided with a protection groove allowing a pipeline to penetrate through and penetrating up and down. The vehicle damping front fork has the advantages of being simple in structure, convenient to install, simple in layout and high in protection performance and impact resistance.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle parts and equipment, and relates to a vehicle shock-absorbing front fork. Background Technology

[0002] Chinese invention patent application CN119755238A (publication date 2025.04.04) discloses a damping adjustable shock absorber. The shock absorber body has a hydraulic damping adjustment device and a pneumatic damping adjustment device. The hydraulic damping adjustment device includes a hydraulic adjustment end cap, which has an adjustment chamber for fluid flow with a hydraulic drive component. The adjustment chamber and the throttle rod are connected by a hydraulic push rod. The pneumatic damping adjustment device includes a pneumatic piston that fits into a damping adjustment cylinder. A pneumatic chamber is formed between the pneumatic piston and the damping piston. A pneumatic drive component is connected to the corresponding end of the damping adjustment cylinder.

[0003] The hydraulic damping adjustment device of the aforementioned shock absorber is connected to the main body of the shock absorber via an oil pipe. Since the hydraulic damping adjustment device is located on the outside of the fork, the oil pipe is also located on the outside of the fork. In addition, the oil pipe does not have a protective structure, and it is easily damaged by external impacts during actual use, causing malfunctions. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a vehicle shock-absorbing front fork that features a simple structure, convenient installation, concise layout, and strong protection and impact resistance.

[0005] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0006] A vehicle shock-absorbing front fork includes a main tube and a fork shoulder. A pair of shock absorbers are connected to the bottom of both sides of the fork shoulder. Each shock absorber includes a fixed cylinder, a movable cylinder, a piston assembly, and a damping spring arranged coaxially. The top of the inner cavity of the fixed cylinder is provided with an adjustment chamber for adjusting the preload of the damping spring. An adjustment device is provided on the outer side of the fixed cylinder. The adjustment device is connected to the adjustment chamber through a pipe. The lower end of the pipe is connected to the top of the adjustment device, and the upper end is connected to the top of the fixed cylinder. A protective groove that runs vertically through the fork shoulder on the inner side of the fixed cylinder is provided for the pipe to pass through.

[0007] In the aforementioned vehicle shock-absorbing fork, the tubing runs along the wall of the fixed cylinder from the outside to the inside and then upwards through the protective groove. The arrangement of the tubing is described in terms of the direction from the adjusting device to the fixed cylinder.

[0008] In the aforementioned vehicle shock-absorbing front fork, shock absorber mounting seats are provided on both sides of the fork shoulder. The mounting seats are annular open seats, and the openings are locked with fasteners to fix the shock absorbers. The openings of the mounting seats are located on the inner side and are arranged along the radial extension surface of the shock absorbers. Furthermore, multiple fasteners are provided, preferably bolts, and the mounting seats are provided with countersunk holes that mate with the fasteners.

[0009] In the aforementioned vehicle shock absorber fork, the protective groove is an open groove with its opening located on the outside of the protective groove. The radial dimension and opening width of the protective groove are not less than the outer diameter of the pipe. The protective groove is integrated with the inner hole of the mounting base.

[0010] In the aforementioned vehicle shock-absorbing fork, the protective groove is centrally located in the front-rear direction of the fork shoulder, and the axis of the protective groove is parallel to the axis of the shock absorber.

[0011] In the aforementioned vehicle shock-absorbing front fork, a first pipe connector is provided at the top of the adjusting device, and a second pipe connector is provided at the top of the fixed cylinder. The lower end of the pipe is connected to the first pipe connector along the axial direction of the shock absorber, and the upper end is connected to the second pipe connector along the radial direction of the shock absorber.

[0012] In the aforementioned vehicle shock-absorbing fork, a first sleeve is provided at the lower end of the pipeline, which is distributed along the axial direction of the shock absorber. A second sleeve is provided at the lower end of the pipeline corresponding to the lower end of the protective groove. The axis of the second sleeve is parallel to the axis of the shock absorber. Both the first sleeve and the second sleeve are made of rigid material.

[0013] In the aforementioned vehicle shock absorber fork, the adjusting device is a pneumatic device or a hydraulic device, and the pipeline is an air pipe or an oil pipe; preferably, the adjusting device is a hydraulic device, and the pipeline is an oil pipe.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This invention provides a vehicle shock-absorbing front fork. By setting a protective groove at a specific position on the fork shoulder that is compatible with the tubing, a certain degree of protection and impact resistance can be provided for the tubing. The protective groove also allows the tubing to be laid out along a specific path, further improving its protection and impact resistance. Furthermore, this invention, in conjunction with a mounting base, features an open protective groove, making installation very convenient. This invention has the advantages of simple structure, convenient installation, concise layout, and strong protection and impact resistance, which can improve the service life of the tubing and the safety of vehicle operation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a perspective view of the shock absorber of this utility model;

[0019] Figure 4 This is a perspective view of the fork shoulder of this utility model;

[0020] Reference numerals: 1. Main pipe; 2. Shoulder; 3. Shock absorber; 4. Fixed cylinder; 5. Moving cylinder; 6. Piston assembly; 7. Damping spring; 8. Adjustment chamber; 9. Adjustment device; 10. Pipeline; 11. Protective groove; 12. Mounting base; 13. First pipeline joint; 14. Second pipeline joint; 15. First sleeve; 16. Second sleeve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0022] A vehicle shock-absorbing front fork includes a main tube 1 and a fork shoulder 2. A pair of shock absorbers 3 are connected to the bottom of both sides of the fork shoulder 2. The shock absorber 3 includes a fixed cylinder 4, a movable cylinder 5, a piston assembly 6, and a damping spring 7 arranged coaxially. The top of the inner cavity of the fixed cylinder 4 is provided with an adjustment chamber 8 for adjusting the preload of the damping spring 7. An adjustment device 9 is provided on the outer side of the fixed cylinder 4. The adjustment device 9 and the adjustment chamber 8 are connected through a pipe 10. The lower end of the pipe 10 is connected to the top of the adjustment device 9, and the upper end is connected to the top of the fixed cylinder 4. A protective groove 11 that passes through the pipe 10 is provided on the fork shoulder 2 on the inner side of the fixed cylinder 4.

[0023] Comparison Appendix Figure 1 After the lower end of the pipe 10 is connected to the top of the adjusting device 9, it runs along the wall of the fixed cylinder 4 from the outside to the inside and passes upward through the protective groove 11, and then connects to the top of the fixed cylinder 4. In the layout of this embodiment, the main body of the pipe 10 is basically located inside the shock absorber 3. In particular, the vulnerable part at the upper end of the pipe 10 is also located inside the protective groove 11. Therefore, the layout and connection structure of the pipe 10 in this embodiment can prevent external impacts and provide better protection for the pipe 10.

[0024] The shock absorber 3 in this embodiment is installed in the following way: mounting seats 12 for the shock absorber 3 are provided on both sides of the fork shoulder 2. The mounting seat 12 is an annular open seat and the opening is locked by fasteners to fix the shock absorber 3. The opening of the mounting seat 12 is located on the inner side and is provided along the radial extension surface of the shock absorber 3. Further, multiple fasteners are provided, preferably bolts. The mounting seat 12 is provided with countersunk holes that cooperate with the fasteners. During installation, the upper end of the fixing cylinder 4 is placed into the mounting seat 12, and then the fasteners are tightened. Under the influence of the fasteners, the opening of the mounting seat 12 is reduced, forming a firm connection.

[0025] To facilitate installation, this embodiment further includes a protective groove 11 with an opening, which is provided in conjunction with the mounting base 12. The protective groove 11 is an open groove with its opening located on the outside of the protective groove 11. The radial dimension and opening width of the protective groove 11 are not less than the outer diameter of the pipe 10. The protective groove 11 is integrated with the inner hole of the mounting base 12. During installation, the fixing cylinder 4 is placed into the mounting base 12 while the pipe 10 is inserted into the protective groove 11. After the fasteners are installed, the installation of the pipe 10 is completed simultaneously.

[0026] Preferably, the protective groove 11 is centrally located in the front-rear direction of the fork shoulder 2, and the axis of the protective groove 11 is parallel to the axis of the shock absorber 3.

[0027] For easy connection, the top of the adjusting device 9 is provided with a first pipe 10 connector, and the top of the fixed cylinder 4 is provided with a second pipe 10 connector. The lower end of the pipe 10 is connected to the first pipe 10 connector along the axial direction of the shock absorber 3, and the upper end is connected to the second pipe 10 connector along the radial direction of the shock absorber 3.

[0028] The lower end of the aforementioned pipeline 10 is provided with a first sleeve 15 distributed along the axial direction of the shock absorber 3. A second sleeve 16 is provided at the corresponding lower end of the pipeline 10 and the protective groove 11. The axis of the second sleeve 16 is parallel to the axis of the shock absorber 3. Both the first sleeve 15 and the second sleeve 16 are made of rigid material. By setting the first sleeve 15 and the second sleeve 16, the pipeline 10 can be protected and the pipeline 10 can be arranged in a predetermined direction to avoid bending of the pipeline 10 during use and affecting the transport of the medium.

[0029] In this embodiment, the adjusting device 9 is a hydraulic device, and the pipeline 10 is an oil pipe.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A vehicle shock-absorbing front fork, comprising a main tube (1) and fork shoulders (2), wherein a pair of shock absorbers (3) are connected to the bottom of both sides of the fork shoulders (2), the shock absorbers (3) comprising a fixed cylinder (4), a movable cylinder (5), a piston assembly (6), and a damping spring (7) arranged coaxially, characterized in that, The top of the inner cavity of the fixed cylinder (4) is provided with an adjustment cavity (8) for adjusting the preload of the damping spring (7). An adjustment device (9) is provided on the outer side of the fixed cylinder (4). The adjustment device (9) and the adjustment cavity (8) are connected through a pipe (10). The lower end of the pipe (10) is connected to the top of the adjustment device (9), and the upper end is connected to the top of the fixed cylinder (4). A protective groove (11) that passes through the pipe (10) is provided on the shoulder (2) on the inner side of the fixed cylinder (4).

2. The vehicle shock-absorbing front fork according to claim 1, characterized in that, The pipeline (10) runs along the wall of the fixed cylinder (4) from the outside to the inside and then upward through the protective groove (11).

3. The vehicle shock-absorbing front fork according to claim 1, characterized in that, The fork shoulder (2) is provided with mounting seats (12) for shock absorbers (3) on both sides. The mounting seat (12) is an annular open seat and the opening is locked by fasteners to fix the shock absorber (3). The opening of the mounting seat (12) is located on the inner side and is provided along the radial extension surface of the shock absorber (3).

4. A vehicle shock-absorbing front fork according to claim 3, characterized in that, The protective groove (11) is an open groove with its opening located on the outside of the protective groove (11). The radial dimension and opening width of the protective groove (11) are not less than the outer diameter of the pipe (10). The protective groove (11) is integrated with the inner hole of the mounting base (12).

5. A vehicle shock-absorbing front fork according to claim 4, characterized in that, The protective groove (11) is centrally located in the front-rear direction of the fork shoulder (2), and the axis of the protective groove (11) is parallel to the axis of the shock absorber (3).

6. A vehicle shock-absorbing front fork according to claim 1, characterized in that, The top of the adjusting device (9) is provided with a first pipe joint (13), and the top of the fixed cylinder (4) is provided with a second pipe joint (14). The lower end of the pipe (10) is connected to the first pipe joint (13) along the axial direction of the shock absorber (3), and the upper end is connected to the second pipe joint (14) along the radial direction of the shock absorber.

7. A vehicle shock-absorbing front fork according to claim 6, characterized in that, The lower end of the pipe (10) is provided with a first sleeve (15) distributed along the axial direction of the shock absorber (3). The lower end of the pipe (10) and the protective groove (11) are provided with a second sleeve (16). The axis of the second sleeve (16) is parallel to the axis of the shock absorber (3). Both the first sleeve (15) and the second sleeve (16) are made of rigid material.

8. A vehicle shock-absorbing front fork according to claim 1, characterized in that, The regulating device (9) is a pneumatic device or a hydraulic device, and the pipeline (10) is an air pipe or an oil pipe.

Images