A multi-stage travel adjustment structure of a shock-absorbing fork

Abstract

The utility model provides a kind of multistage stroke adjusting structure of shock absorbing front fork, comprising: mounting structure;Two inner tubes, two the inner tube is installed in the bottom of mounting structure by fixed disc, the inner surface of the inner tube is equipped with multiple limit rails, the top of the inner tube is rotatably connected with adjusting assembly by rotating structure, the outer surface of the adjusting assembly is threadedly connected with movable block, the outer surface of the movable block is fixedly connected with multiple limit blocks, the outer surface of the inner tube is slidably connected with outer tube by sealing structure, the bottom of the outer tube is fixedly connected with docking frame.The utility model adjusts the position of movable block by the design using the way of thread adjusting, after adjusting is completed, cooperation thread is positioned and supported, increase stability, while cooperating pressure monitoring component can monitor stroke adjusting condition, improve multistage adjusting precision.

Description

Technical Field

[0001] This utility model relates to the field of bicycle suspension fork technology, and in particular to a multi-stage travel adjustment structure for a suspension fork. Background Technology

[0002] The front fork is located at the front of the bicycle structure. Its upper end is connected to the handlebar assembly, the frame assembly mates with the head tube, and its lower end mates with the front axle assembly, forming the bicycle's steering system.

[0003] The travel adjustment mechanism of a suspension fork is a key component that controls the effective compression length of the fork's shock absorption. Commonly found in mountain bikes and other similar models, its core function is to allow users to flexibly adjust the maximum compressible distance of the fork according to road conditions. Shortening the travel enhances the rigidity of the front end, making it suitable for climbing hills and riding on flat roads to reduce power loss. Lengthening the travel improves shock absorption and cushioning capabilities, making it suitable for bumpy and steep mountain rides. This mechanism is easy to operate and can quickly balance riding efficiency and road adaptability, making it an important design feature that enhances the practicality of the vehicle.

[0004] Traditional suspension fork travel adjustment mechanisms rely on the rigid fit between a locking pin and a locking slot to lock the travel after adjustment. Under bumpy road conditions, the locking pin is prone to loosening due to vibration, resulting in insufficient travel stability. Furthermore, while single spring preload adjustment can adjust the travel by changing the spring compression, it cannot determine the spring's stress condition, making it difficult to accurately control the spring's formation and affecting the accuracy of travel adjustment.

[0005] Therefore, it is necessary to provide a multi-stage travel adjustment structure for shock-absorbing forks to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a multi-stage stroke adjustment structure for shock-absorbing front forks, which solves the problems of poor stability of springs fixed by pins and slots and the inability to judge the spring force condition when adjusting a single spring preload, which affects the spring adjustment accuracy.

[0007] To solve the above-mentioned technical problems, the present invention provides a multi-stage stroke adjustment structure for a shock-absorbing front fork, comprising: an installation structure;

[0008] Two inner tubes are mounted on the bottom of the mounting structure via a fixed plate. Multiple limiting rails are mounted on the inner surface of each inner tube. An adjustment component is rotatably connected to the top of each inner tube via a rotating structure. A movable block is threaded onto the outer surface of the adjustment component. Multiple limiting blocks are fixedly connected to the outer surface of the movable block. An outer tube is slidably connected to the outer surface of each inner tube via a sealing structure. A docking frame is fixedly connected to the bottom of the outer tube.

[0009] A support spring is fixedly connected to the bottom end of the movable block via a mounting plate. A second stabilizing block is installed at the bottom end of the support spring. A piston is installed at the bottom end of the second stabilizing block via a pressure monitoring component. A sealing ring is installed on the outer surface of the piston. A first stabilizing block is installed at the bottom end of the movable block. A reset spring is installed at the top of the first stabilizing block. A support rod is installed at the bottom end of the first stabilizing block.

[0010] The limiting block slides inside the limiting rail. The sealing structure can increase the sealing at the connection between the inner and outer tubes, but does not affect the up and down movement of the inner tube. The outer surface of the support rod has an opening for oil flow. The stabilizing block can provide stability and also act as a seal. The piston moves up and down by pushing the support rod. The bottom end of the support rod is connected to the bottom end of the inner wall of the outer tube by bolts. The wiring of the pressure monitoring component is inserted from the bottom end of the outer tube.

[0011] Preferably, two second mounting components are installed at the bottom of the mounting structure, and a first mounting component is fixedly connected to the outer surface of the outer tube;

[0012] The mounting components are used to connect to the structures that require connection.

[0013] Preferably, the first mounting component includes a fixing structure and a fixing hole, the fixing structure is mounted on the outer surface of the outer tube, and the fixing hole penetrates the fixing structure.

[0014] Preferably, a connecting pipe is fixedly connected to the top of the mounting structure, and stabilizing pipes are fixedly connected to the bottom of the mounting structure near both sides;

[0015] The stabilizing tube is located on the outer surface of the inner tube to increase connection stability.

[0016] Preferably, the adjusting assembly includes an adjusting head and an adjusting screw, the adjusting screw being mounted on the inner surface of the rotating structure;

[0017] The rotating structure includes a bearing housing and a bearing.

[0018] Preferably, a first support ring is installed on the outer surface of the outer tube, and a second support ring is installed on the outer surface of the stabilizing tube;

[0019] The first and second support rings are both fixed in their corresponding positions with bolts.

[0020] Preferably, an auxiliary spring is installed between the first support ring and the second support ring via a fixing ring, and a monitoring component is installed at the bottom of the first support ring through a perforation.

[0021] Preferably, the monitoring component includes a fixed base and a monitoring component, wherein the fixed base is used to mount the monitoring component to the bottom end of the first support ring;

[0022] The monitoring component passes through the perforation, and the monitoring end of the monitoring component contacts the retaining ring.

[0023] Compared with related technologies, this utility model has the following beneficial effects:

[0024] This utility model provides a multi-stage stroke adjustment structure for a shock-absorbing front fork. To improve the stability and accuracy of the multi-stage stroke adjustment of the shock-absorbing front fork, an adjustment component and a movable block are threadedly connected. The rotation of the adjustment component first drives the movable block to adjust its position up and down inside the inner tube. During this process, the limiting block and limiting rail on the outer surface of the movable block cooperate with each other to increase stability. The pressure monitoring component located between the second stabilizing block and the piston can monitor the pressure of the support spring in real time during the corresponding stroke. This design uses a threaded adjustment method to adjust the position of the movable block. After adjustment, the threaded support provides limiting support, increasing stability. At the same time, the pressure monitoring component can monitor the stroke adjustment, improving the accuracy of multi-stage adjustment. Attached Figure Description

[0025] Figure 1 A schematic diagram of the first embodiment of the multi-stage stroke adjustment structure for the shock-absorbing fork provided by this utility model;

[0026] Figure 2 This invention provides a structural schematic diagram of the inner tube;

[0027] Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown;

[0028] Figure 4 Provided for this utility model Figure 2 An enlarged view of point B shown;

[0029] Figure 5 A schematic diagram of the second embodiment of the multi-stage stroke adjustment structure for the shock-absorbing fork provided by this utility model;

[0030] Figure 6 Provided for this utility model Figure 5 A magnified view of point C shown.

[0031] The diagram is labeled as follows: 1. Installation structure, 2. Connecting pipe, 3. Stabilizing pipe, 4. Connecting frame, 5. First installation component, 501. Fixing structure, 502. Fixing hole, 6. Outer pipe, 7. Inner pipe, 8. Second installation component, 9. Sealing structure, 10. Fixing plate, 11. Limiting rail, 12. Adjusting component, 121. Adjusting head, 122. Adjusting screw, 13. Support spring, 14. Limiting block, 15. Moving block, 16. Installation plate, 17. Rotating structure, 18. Piston, 19. Sealing ring, 20. Support rod, 21. First stabilizing block, 22. Return spring, 23. Second stabilizing block, 24. First support ring, 25. Fixing ring, 26. Auxiliary spring, 27. Second support ring, 28. Monitoring component, 281. Fixing base, 282. Monitoring component, 29. Pressure monitoring component, 30. Perforation. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] First embodiment:

[0034] Please refer to the following: Figures 1-4 The first embodiment of the present invention provides a multi-stage travel adjustment structure for a shock-absorbing fork, which includes: mounting structure 1;

[0035] Two inner tubes 7 are installed at the bottom of the mounting structure 1 via a fixing plate 10. Multiple limit rails 11 are installed on the inner surface of the inner tubes 7. An adjustment component 12 is rotatably connected to the top of the inner tubes 7 via a rotating structure 17. A movable block 15 is threadedly connected to the outer surface of the adjustment component 12. Multiple limit blocks 14 are fixedly connected to the outer surface of the movable block 15. An outer tube 6 is slidably connected to the outer surface of the inner tubes 7 via a sealing structure 9. A docking frame 4 is fixedly connected to the bottom of the outer tube 6.

[0036] A support spring 13 is fixedly connected to the bottom end of the movable block 15 via a mounting plate 16. A second stabilizing block 23 is installed at the bottom end of the support spring 13. A piston 18 is installed at the bottom end of the second stabilizing block 23 via a pressure monitoring component 29. A sealing ring 19 is installed on the outer surface of the piston 18. A first stabilizing block 21 is installed at the bottom end of the piston 18. A reset spring 22 is installed on the top of the first stabilizing block 21. A support rod 20 is installed at the bottom end of the first stabilizing block 21.

[0037] The limiting block 14 slides inside the limiting rail 11. The sealing structure 9 can increase the sealing at the connection between the inner tube 7 and the outer tube 6, but does not affect the up and down movement of the inner tube 7. The outer surface of the support rod 20 has an opening for oil flow. The stabilizing block 23 can provide stabilization and sealing. The piston 18 is pushed up and down by the support rod 20. The bottom end of the support rod 20 is connected to the bottom end of the inner wall of the outer tube 6 by bolts. The wiring of the pressure monitoring component 29 is inserted from the bottom end of the outer tube 6. The connection is sealed. All structures above the first stabilizing block 21 are located inside the inner tube 7.

[0038] Please refer to Figure 1 Two second mounting components 8 are installed at the bottom of the mounting structure 1, and a first mounting component 5 is fixedly connected to the outer surface of the outer tube 6; the mounting components are used to connect with the structure that needs to be connected.

[0039] Please refer to Figure 1 and Figure 2 The first mounting component 5 includes a fixing structure 501 and a fixing hole 502. The fixing structure 501 is mounted on the outer surface of the outer tube 6, and the fixing hole 502 penetrates the fixing structure 501.

[0040] Reference for the location of the first installation component 5 Figure 1 .

[0041] Please refer to Figure 1 The top of the mounting structure 1 is fixedly connected to the connecting pipe 2, and the bottom of the mounting structure 1 is fixedly connected to the stabilizing pipe 3 near both sides. The stabilizing pipe 3 is located on the outer surface of the inner pipe 7 to increase the connection stability. The connecting pipe 2 is used to install the mounting structure 1 in the corresponding position.

[0042] Please refer to Figure 2 and Figure 3 The adjusting assembly 12 includes an adjusting head 121 and an adjusting screw 122. The adjusting screw 122 is mounted on the inner surface of the rotating structure 17. The rotating structure 17 includes a bearing seat and a bearing. The adjusting head 121 is convenient for manual rotation.

[0043] The working principle of this first embodiment is as follows:

[0044] The adjusting component 12 and the movable block 15 are threadedly connected. The rotation of the adjusting component 12 first drives the movable block 15 to adjust its position up and down inside the inner tube 7. During this process, the limiting block 14 and the limiting rail 11 on the outer surface of the movable block 15 cooperate with each other to increase stability. The pressure monitoring component 29, located between the second stabilizing block 23 and the piston 18, can monitor the pressure of the support spring 13 in real time during the corresponding stroke. When adjustment is required, rotating the adjusting component 12 can drive the adjusting component 12 to rotate at the top of the inner tube 7 through the rotating structure 17. During this process, the movable block 15, which is threadedly connected to the outer surface of the adjusting component 12, can move up and down along the thread on the outer surface of the adjusting component 12, thereby realizing multi-stage adjustment of the stroke of the support spring 13. During the adjustment process, the pressure data changes monitored by the pressure monitoring component 29 can be used to determine whether the adjustment position is reasonable.

[0045] Second embodiment:

[0046] Please refer to the following: Figures 5-6 Based on the multi-stage stroke adjustment structure of the shock-absorbing fork provided in the first embodiment of this application, the second embodiment of this application proposes another multi-stage stroke adjustment structure for the shock-absorbing fork. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0047] Specifically, the difference in the multi-stage travel adjustment structure of the shock-absorbing fork provided in the second embodiment of this application is as follows, please refer to... Figure 5 The outer surface of the outer tube 6 is fitted with a first support ring 24, and the outer surface of the stabilizing tube 3 is fitted with a second support ring 27; the first support ring 24 and the second support ring 27 are both fixed in their respective positions by bolts.

[0048] Please refer to Figure 5 An auxiliary spring 26 is installed between the first support ring 24 and the second support ring 27 via a fixing ring 25. A monitoring component 28 is installed at the bottom of the first support ring 24 via a through hole 30. The through hole 30 passes through the bottom and top of the first support ring 24.

[0049] Please refer to Figure 5 and Figure 6 The monitoring component 28 includes a fixed base 281 and a monitoring component 282. The fixed base 281 is used to install the monitoring component 282 at the bottom end of the first support ring 24. The monitoring component 282 passes through the through hole 30, and the monitoring end of the monitoring component 282 contacts the fixed ring 25. The monitoring component 282 can monitor the force on the auxiliary spring 26.

[0050] In this second embodiment, to improve the stability of the shock absorber spring and suppress bounce, a second support ring 27 is installed on the stabilizing tube 3, and a first support ring 24 is installed on the outer surface of the outer tube 6. Then, the auxiliary spring 26 is installed between the first support ring 24 and the second support ring 27 through the fixing ring 25. The monitoring component 28 is installed at the bottom of the first support ring 24 to monitor the force on the auxiliary spring 26. This design can use the auxiliary spring 26 to suppress the fork bounce and increase the stability of the shock absorber fork during shock absorption.

[0051] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-stage travel adjustment structure for a shock-absorbing front fork, characterized in that, include: Installation structure (1); Two inner tubes (7) are installed at the bottom of the mounting structure (1) via a fixed plate (10). Multiple limit rails (11) are installed on the inner surface of the inner tubes (7). An adjustment component (12) is rotatably connected to the top of the inner tubes (7) via a rotating structure (17). A movable block (15) is threadedly connected to the outer surface of the adjustment component (12). Multiple limit blocks (14) are fixedly connected to the outer surface of the movable block (15). An outer tube (6) is slidably connected to the outer surface of the inner tubes (7) via a sealing structure (9). A docking frame (4) is fixedly connected to the bottom of the outer tube (6). A support spring (13) is fixedly connected to the bottom end of the movable block (15) via a mounting plate (16). A second stabilizing block (23) is installed at the bottom end of the support spring (13). A piston (18) is installed at the bottom end of the second stabilizing block (23) via a pressure monitoring component (29). A sealing ring (19) is installed on the outer surface of the piston (18). A first stabilizing block (21) is installed at the bottom end of the piston (18). A reset spring (22) is installed on the top of the first stabilizing block (21). A support rod (20) is installed at the bottom end of the first stabilizing block (21).

2. The multi-stage stroke adjustment structure of the shock-absorbing fork according to claim 1, characterized in that, Two second mounting components (8) are installed at the bottom of the mounting structure (1), and a first mounting component (5) is fixedly connected to the outer surface of the outer tube (6).

3. The multi-stage stroke adjustment structure of the shock-absorbing fork according to claim 2, characterized in that, The first mounting component (5) includes a fixing structure (501) and a fixing hole (502). The fixing structure (501) is mounted on the outer surface of the outer tube (6), and the fixing hole (502) penetrates the fixing structure (501).

4. The multi-stage stroke adjustment structure of the shock-absorbing fork according to claim 1, characterized in that, The top of the installation structure (1) is fixedly connected to a connecting pipe (2), and the bottom of the installation structure (1) is fixedly connected to a stabilizing pipe (3) near both sides.

5. The multi-stage travel adjustment structure of the shock-absorbing fork according to claim 1, characterized in that, The adjustment assembly (12) includes an adjustment head (121) and an adjustment screw (122), the adjustment screw (122) being mounted on the inner surface of the rotating structure (17).

6. The multi-stage travel adjustment structure of the shock-absorbing fork according to claim 4, characterized in that, The outer surface of the outer tube (6) is fitted with a first support ring (24), and the outer surface of the stabilizing tube (3) is fitted with a second support ring (27).

7. The multi-stage travel adjustment structure of the shock-absorbing fork according to claim 6, characterized in that, An auxiliary spring (26) is installed between the first support ring (24) and the second support ring (27) via a fixing ring (25), and a monitoring component (28) is installed at the bottom of the first support ring (24) via a perforation (30).

8. The multi-stage travel adjustment structure of the shock-absorbing fork according to claim 7, characterized in that, The monitoring component (28) includes a fixed base (281) and a monitoring component (282), wherein the fixed base (281) is used to mount the monitoring component (282) to the bottom end of the first support ring (24).

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