A riding shock absorbing fork

Abstract

This invention provides a cycling shock-absorbing front fork, including a fork shoulder, a main rod, and a shock-absorbing assembly. The shock-absorbing assembly includes a shock absorber and a shock-absorbing spring. The shock absorber includes a sleeve and a rod body. A lower limiting ring is provided on the outer wall of the sleeve, and an upper limiting ring is threadedly connected to the outer wall of the rod body. An installation chamber is opened inside the upper limiting ring, and a gear ring is provided inside the installation chamber. A connection opening is opened at the bottom of the upper limiting ring. A support plate is provided on the outer wall of the rod body, and a connection through hole is opened on the support plate. A transmission gear is rotatably connected to the top of the support plate, and a ratchet is rotatably connected in the transmission gear. An adjustment hole is opened in the ratchet, and a spiral groove is opened inside the adjustment hole. A receiving groove is opened inside the transmission gear, and a pawl is hinged in the receiving groove. A retaining spring is provided inside the receiving groove. An adjustment post is provided on the top of the sleeve, and a spiral blade is provided on the outer wall of the adjustment post. The above-mentioned shock-absorbing front fork can automatically adjust the shock-absorbing spring with poor initial condition during riding.

Description

Technical Field

[0001] This invention relates to front forks, and more particularly to a cycling shock-absorbing front fork. Background Technology

[0002] Currently, Chinese patent CN114179957A discloses a two-wheeled vehicle suspension, including a front fork. A main rod is mounted on the upper end of the front fork, and a shock absorber assembly and a stabilizer bar assembly are mounted on the lower end. The shock absorber assembly includes a shock absorber and a spring disposed on its outer periphery. The shock absorber includes a sleeve and a rod body. One end of the rod body is movably disposed within the sleeve, and the other end of the rod body is fixedly connected to the front fork. An upper limit ring is formed on the upper end of the rod body, and a lower limit ring is formed on the outer periphery of the sleeve. The spring is pressed against the upper limit ring and the lower limit ring. When the front fork is subjected to force, the front fork will drive the rod body downwards, thereby compressing the spring through the upper and lower limit rings, thus achieving a shock absorption effect. However, as the suspension is used over time, the spring force will gradually weaken. This can lead to excessive compression stroke during the compression phase, affecting riding comfort. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a cycling shock-absorbing fork that has the advantage of being able to adjust the spring force, thereby ensuring riding comfort.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a cycling shock-absorbing front fork, including a fork shoulder, a main rod disposed at the top of the fork shoulder, and two shock-absorbing components disposed on both sides of the bottom of the fork shoulder;

[0005] The shock absorption assembly includes a shock absorber and a shock absorption spring sleeved on the outside of the shock absorber;

[0006] The shock absorber includes a sleeve and a rod. A lower limiting ring is provided on the outer wall of the sleeve. The bottom of the rod is slidably disposed inside the sleeve. The top of the rod is fixedly disposed at the bottom of the fork shoulder. An upper limiting ring is threadedly connected to the outer wall of the rod. The two ends of the shock-absorbing spring abut against the lower limiting ring and the upper limiting ring, respectively.

[0007] The upper limit ring has an internal mounting chamber, and a gear ring is installed inside the mounting chamber. A connecting opening is located at the bottom of the upper limit ring, communicating with the mounting chamber. A support plate is installed on the outer wall of the rod, located inside the mounting chamber. A connecting through hole runs from top to bottom through the support plate, and the connecting through hole is vertically opposite to the connecting opening. A transmission gear is rotatably connected to the top of the support plate. The height of the transmission gear is less than the height of the gear ring, and the transmission gear meshes with the gear ring. A ratchet is rotatably connected to the center of the transmission gear, and an adjustment hole runs through the center of the ratchet, communicating with the connecting through hole. A spiral groove is formed on the inner wall of the adjustment hole. A receiving groove is formed on the inner side of the transmission gear, and a pawl is hinged in the receiving groove. The end of the pawl extends out of the opening of the receiving groove. A retaining spring is installed inside the receiving groove, with its two ends connected to the transmission gear and the pawl, respectively. The retaining spring is used to drive the pawl to abut against the ratchet.

[0008] The top of the sleeve is provided with an adjusting post, which is located directly below the adjusting hole and is used to pass through the adjusting hole. The outer wall of the adjusting post is provided with a spiral blade, which is adapted to the spiral groove.

[0009] When the adjusting column passes through the adjusting hole from bottom to top, the spiral blade slides in the spiral groove and drives the ratchet to rotate clockwise. The ratchet drives the transmission gear to rotate clockwise through the pawl. The transmission gear drives the upper limit ring to rotate clockwise through the gear ring, compressing the shock-absorbing spring.

[0010] When the adjusting column passes through the adjusting hole from top to bottom, the spiral blade slides in the spiral groove and drives the ratchet to rotate counterclockwise. The ratchet moves the pawl to rotate, and the position of the transmission gear is fixed.

[0011] With the above technical solution, the elastic force provided by the shock-absorbing spring in its initial state will gradually decrease as the riding time increases. In other words, as the riding time increases, the sliding stroke of the rod inside the sleeve will gradually increase during the riding process.

[0012] If, during the downward sliding of the rod, the adjusting pin located at the top of the sleeve is inserted into the adjusting hole from bottom to top, the spiral blade enters the spiral groove and drives the ratchet to rotate clockwise. At this time, under the restraint of the pawl, the ratchet will drive the transmission gear to rotate clockwise. The transmission gear drives the upper limit ring to rotate clockwise through the pre-meshed gear ring, causing the upper limit ring to move towards the sleeve side to compress the shock-absorbing spring, thereby increasing the elastic force that the shock-absorbing spring can provide in the initial state, so that the travel of the rod can be reduced, thereby improving the riding comfort of the user.

[0013] As the rod slides upward, the adjusting pin at the top of the sleeve will gradually move away from the adjusting hole. At this time, the spiral blade slides in the spiral groove and drives the ratchet to rotate counterclockwise. During the rotation, the ratchet will continuously push the pawl to rotate, so that the position of the transmission gear will remain fixed and the upper limit ring will not flip.

[0014] The aforementioned shock-absorbing fork can automatically adjust the initial poor state of the shock-absorbing spring during riding, without requiring manual adjustment by the user, which has the advantage of being more convenient to use.

[0015] Preferably, a positioning ring is provided at the top of the lower limiting ring, the central axis of the positioning ring coincides with the central axis of the lower limiting ring, and the positioning ring extends into the damping spring and abuts against the inner ring of the damping spring.

[0016] Through the above technical solution, the positioning ring can be used to limit the bottom of the shock-absorbing spring, making it less prone to displacement.

[0017] Preferably, a second positioning ring is provided at the bottom of the upper limit ring, the central axis of the second positioning ring coincides with the central axis of the upper limit ring, the inner ring of the second positioning ring is flush with the inner wall of the connecting opening, and the second positioning ring extends into the damping spring and abuts against the inner ring of the damping spring.

[0018] Through the above technical solution, the second positioning ring can be used to limit the top of the shock-absorbing spring, making it less prone to displacement. The inner ring of the second positioning ring is flush with the inner wall of the connecting opening, thus minimizing obstruction to the insertion of the adjusting pin into the adjusting hole.

[0019] Preferably, the top of the support plate is provided with a sliding ring groove, the sliding ring groove surrounds the connecting through hole, and the central axis of the sliding ring groove coincides with the central axis of the connecting through hole. The longitudinal section of the sliding ring groove is inverted T-shaped. The bottom of the transmission gear is provided with a sliding convex ring, the longitudinal section of the sliding convex ring is inverted T-shaped, and the sliding convex ring is slidably connected in the sliding ring groove.

[0020] With the above technical solution, the longitudinal cross-sections of both the sliding ring groove and the sliding convex ring are inverted T-shaped, making it difficult for the support plate and the transmission gear to separate.

[0021] Preferably, a connecting ring is provided at the top of the transmission gear, and a limiting block is connected to the internal thread of the connecting ring. The limiting block abuts against the ratchet, and a movable through hole is provided through the center of the limiting block. The movable through hole is connected to the adjustment hole, and the diameter of the movable through hole is larger than the diameter of the adjustment hole.

[0022] Through the above technical solution, the limiting block abuts against the ratchet to limit its movement, ensuring a stable connection between the ratchet and the transmission gear. The diameter of the movable through hole is larger than that of the adjusting hole, so when the adjusting pin passes through the movable through hole, the inner wall of the movable through hole does not contact the outer wall of the adjusting pin, thus minimizing obstruction to the rotation and sliding of the adjusting pin. The limiting block is threadedly connected to the connecting ring, making the assembly and disassembly of the ratchet and ratchet teeth more convenient and faster.

[0023] Preferably, the bottom of the limiting block is ball-mounted with a plurality of steel balls, the plurality of steel balls being evenly distributed along the circumference of the limiting block, and the plurality of steel balls all abutting against the ratchet.

[0024] Through the above technical solution, the steel ball can reduce the friction between the limit block and the ratchet, making the rotation of the ratchet smoother.

[0025] Preferably, the top of the mounting chamber is provided with a cushioning rubber, which is vertically opposite to the adjustment hole.

[0026] With the above technical solution, the buffer rubber and the adjustment hole are positioned vertically opposite each other, which can be used to abut against the adjustment column, thus avoiding the situation where the adjustment column damages the upper limit ring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0028] Figure 2 for Figure 1 Enlarged view of part A;

[0029] Figure 3 for Figure 1 Enlarged view of part B.

[0030] Reference numerals: 1. Fork shoulder; 2. Main rod; 3. Shock absorber assembly; 31. Shock absorber; 32. Shock absorber spring; 311. Sleeve; 312. Rod body; 4. Lower limit ring; 5. Upper limit ring; 6. Mounting chamber; 7. Gear ring; 8. Connection opening; 9. Support plate; 10. Connection through hole; 11. Transmission gear; 12. Ratchet; 13. Adjustment hole; 14. Spiral groove; 15. Receiving groove; 16. Pawl; 17. Clamping spring; 18. Adjusting column; 19. Spiral blade; 20. Positioning ring one; 21. Positioning ring two; 22. Sliding ring groove; 23. Sliding convex ring; 24. Connecting ring; 25. Limiting block; 26. Movable through hole; 27. Steel ball; 28. Cushioning rubber. Implementation

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and mastered.

[0032] A type of cycling suspension fork, such as Figures 1 to 3 As shown, it includes a fork shoulder 1, a main rod 2 set at the top of the fork shoulder 1, and two shock-absorbing components 3 symmetrically set on both sides of the bottom of the fork shoulder 1.

[0033] The damping assembly 3 includes a damper 31 and a damping spring 32 sleeved on the outside of the damper 31.

[0034] The shock absorber 31 includes a sleeve 311 and a rod 312. A lower limiting ring 4 is provided on the outer wall of the sleeve 311, and a positioning ring 20 is provided on the top of the lower limiting ring 4, with the central axis of the positioning ring 20 coinciding with the central axis of the lower limiting ring 4. The bottom of the rod 312 is slidably disposed inside the sleeve 311, and the top of the rod 312 is fixedly disposed at the bottom of the fork shoulder 1. An upper limiting ring 5 is threadedly connected to the outer wall of the rod 312, and a positioning ring 21 is provided at the bottom of the upper limiting ring 5, with the central axis of the positioning ring 21 coinciding with the central axis of the upper limiting ring 5. The two ends of the shock-absorbing spring 32 abut against the lower limiting ring 4 and the upper limiting ring 5, respectively, and the two ends of the shock-absorbing spring 32 are respectively sleeved on the outside of the positioning ring 20 and the positioning ring 21.

[0035] The upper limit ring 5 has an internal mounting chamber 6, and a gear ring 7 is installed inside the mounting chamber 6. The bottom of the upper limit ring 5 has a connecting opening 8 that connects to the mounting chamber 6, and the inner wall of the connecting opening 8 is flush with the inner wall of the positioning ring 21. A support plate 9 is installed on the outer wall of the rod 312, located inside the mounting chamber 6. A connecting through hole 10 is provided through the support plate 9 from top to bottom, and the connecting through hole 10 is vertically opposite to the connecting opening 8. A transmission gear 11 is rotatably connected to the top of the support plate 9. The height of the transmission gear 11 is less than the height of the gear ring 7, and the transmission gear 11 meshes with the gear ring 7. A ratchet 12 is rotatably connected to the center of the transmission gear 11. An adjustment hole 13 is provided through the center of the ratchet 12, and the adjustment hole 13 communicates with the connecting through hole 10. A spiral groove 14 is provided on the inner wall of the adjustment hole 13. The inner side of the transmission gear 11 is provided with a receiving groove 15, and a pawl 16 is hinged in the receiving groove 15, with the end of the pawl 16 extending out of the groove opening of the receiving groove 15. A retaining spring 17 is provided inside the receiving groove 15, with both ends of the retaining spring 17 connected to the transmission gear 11 and the pawl 16 respectively, and the retaining spring 17 is used to drive the pawl 16 to abut against the ratchet 12.

[0036] The top of the sleeve 311 is provided with an adjusting post 18, which is located directly below the adjusting hole 13 and is used to pass through the adjusting hole 13. The outer wall of the adjusting post 18 is provided with a spiral blade 19, which is adapted to the spiral groove 14.

[0037] When the adjusting pin 18 passes through the adjusting hole 13 from bottom to top, the spiral blade 19 slides in the spiral groove 14 and drives the ratchet 12 to rotate clockwise. The ratchet 12 drives the transmission gear 11 to rotate clockwise through the pawl 16. The transmission gear 11 drives the upper limit ring 5 to rotate clockwise through the gear ring 7, compressing the shock-absorbing spring 32. When the adjusting pin 18 passes through the adjusting hole 13 from top to bottom, the spiral blade 19 slides in the spiral groove 14 and drives the ratchet 12 to rotate counterclockwise. The ratchet 12 moves the pawl 16 to rotate, and the position of the transmission gear 11 is fixed.

[0038] The top of the support plate 9 is provided with a sliding annular groove 22, which surrounds the connecting through hole 10. The central axis of the sliding annular groove 22 coincides with the central axis of the connecting through hole 10, and the longitudinal section of the sliding annular groove 22 is inverted T-shaped. The bottom of the transmission gear 11 is provided with a sliding convex ring 23, the longitudinal section of which is inverted T-shaped, and the sliding convex ring 23 is slidably connected in the sliding annular groove 22.

[0039] A connecting ring 24 is provided on the top of the transmission gear 11. A limiting block 25 is threadedly connected to the inside of the connecting ring 24. The limiting block 25 abuts against the ratchet 12. A movable through hole 26 is provided through the center of the limiting block 25. The movable through hole 26 is connected to the adjusting hole 13, and the diameter of the movable through hole 26 is larger than the diameter of the adjusting hole 13. Several steel balls 27 are ball-jointed at the bottom of the limiting block 25. The steel balls 27 are evenly distributed along the circumference of the limiting block 25, and all of the steel balls 27 abut against the ratchet 12.

[0040] A buffer rubber 28 is provided on the top of the mounting chamber 6, and the buffer rubber 28 is vertically opposite to the adjustment hole 13.

[0041] Of course, the above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A cycling shock-absorbing front fork, characterized in that: It includes a fork shoulder (1), a main rod (2) disposed at the top of the fork shoulder (1), and two shock absorber assemblies (3) disposed on both sides of the bottom of the fork shoulder (1); The shock absorption assembly (3) includes a shock absorber (31) and a shock absorption spring (32) sleeved on the outside of the shock absorber (31); The shock absorber (31) includes a sleeve (311) and a rod (312). A lower limiting ring (4) is provided on the outer wall of the sleeve (311). The bottom of the rod (312) is slidably disposed inside the sleeve (311). The top of the rod (312) is fixedly disposed at the bottom of the fork shoulder (1). An upper limiting ring (5) is threadedly connected to the outer wall of the rod (312). The two ends of the shock absorber spring (32) abut against the lower limiting ring (4) and the upper limiting ring (5) respectively. The upper limit ring (5) has an installation chamber (6) inside, and a gear ring (7) is provided inside the installation chamber (6). The bottom of the upper limit ring (5) has a connecting opening (8) that connects to the installation chamber (6). A support plate (9) is provided on the outer wall of the rod (312). The support plate (9) is located inside the installation chamber (6). A connecting through hole (10) is provided through the support plate (9) from top to bottom. The connecting through hole (10) is vertically opposite to the connecting opening (8). A transmission gear (11) is rotatably connected to the top of the support plate (9). The height of the transmission gear (11) is less than the height of the gear ring (7). The transmission gear (11) meshes with the gear ring (7). A ratchet (12) is rotatably connected at the center of the gear (11). An adjustment hole (13) is provided through the center of the ratchet (12). The adjustment hole (13) is connected to the connecting through hole (10). A spiral groove (14) is provided on the inner wall of the adjustment hole (13). A receiving groove (15) is provided on the inner side of the transmission gear (11). A pawl (16) is hinged in the receiving groove (15). The end of the pawl (16) extends out of the groove opening of the receiving groove (15). A retaining spring (17) is provided inside the receiving groove (15). The two ends of the retaining spring (17) are respectively connected to the transmission gear (11) and the pawl (16). The retaining spring (17) is used to drive the pawl (16) to abut against the ratchet (12). The top of the sleeve (311) is provided with an adjusting post (18), which is located directly below the adjusting hole (13) and is used to pass through the adjusting hole (13). The outer wall of the adjusting post (18) is provided with a spiral blade (19), which is adapted to the spiral groove (14). When the adjusting column (18) passes through the adjusting hole (13) from bottom to top, the spiral blade (19) slides in the spiral groove (14) and drives the ratchet (12) to rotate clockwise. The ratchet (12) drives the transmission gear (11) to rotate clockwise through the pawl (16). The transmission gear (11) drives the upper limit ring (5) to rotate clockwise through the gear ring (7), compressing the shock-absorbing spring (32). When the adjusting column (18) passes through the adjusting hole (13) from top to bottom, the spiral blade (19) slides in the spiral groove (14) and drives the ratchet (12) to rotate counterclockwise. The ratchet (12) moves the pawl (16) to rotate, and the position of the transmission gear (11) is fixed.

2. The cycling shock-absorbing front fork according to claim 1, characterized in that: The lower limit ring (4) is provided with a positioning ring (20) at its top. The central axis of the positioning ring (20) coincides with the central axis of the lower limit ring (4). The positioning ring (20) extends into the shock-absorbing spring (32) and abuts against the inner ring of the shock-absorbing spring (32).

3. A cycling shock-absorbing front fork according to claim 2, characterized in that: The bottom of the upper limit ring (5) is provided with a positioning ring two (21). The central axis of the positioning ring two (21) coincides with the central axis of the upper limit ring (5). The inner ring of the positioning ring two (21) is flush with the inner wall of the connecting opening (8). The positioning ring two (21) extends into the shock-absorbing spring (32) and abuts against the inner ring of the shock-absorbing spring (32).

4. A cycling shock-absorbing front fork according to claim 1, characterized in that: The top of the support plate (9) is provided with a sliding ring groove (22), which surrounds the connecting through hole (10), and the central axis of the sliding ring groove (22) coincides with the central axis of the connecting through hole (10). The longitudinal section of the sliding ring groove (22) is inverted T-shaped. The bottom of the transmission gear (11) is provided with a sliding convex ring (23), the longitudinal section of the sliding convex ring (23) is inverted T-shaped, and the sliding convex ring (23) is slidably connected in the sliding ring groove (22).

5. A cycling shock-absorbing front fork according to claim 4, characterized in that: The top of the transmission gear (11) is provided with a connecting ring (24), and the internal thread of the connecting ring (24) is connected to a limiting block (25). The limiting block (25) abuts against the ratchet (12). A movable through hole (26) is provided through the center of the limiting block (25). The movable through hole (26) is connected to the adjusting hole (13), and the diameter of the movable through hole (26) is larger than the diameter of the adjusting hole (13).

6. A cycling shock-absorbing front fork according to claim 5, characterized in that: The bottom of the limiting block (25) is ball-connected with a number of steel balls (27), which are evenly distributed along the circumference of the limiting block (25) and all of the steel balls (27) abut against the ratchet (12).

7. A cycling shock-absorbing front fork according to claim 1, characterized in that: The top of the mounting chamber (6) is provided with a buffer rubber (28), which is vertically opposite to the adjustment hole (13).

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