A motorcycle shock absorbing fork

Abstract

The application provides a motorcycle shock-absorbing front fork, which comprises a front fork shoulder, a main rod and a shock-absorbing assembly; the shock-absorbing assembly comprises a shock absorber and a shock-absorbing spring; the shock absorber comprises a sleeve and a rod body, a lower limiting ring is sleeved on the outer wall of the sleeve, and an upper limiting ring is arranged on the outer wall of the rod body. A guide groove is formed in the outer wall of the sleeve, a guide block is arranged on the inner wall of the lower limiting ring, and the guide block is slidably connected in the guide groove; a one-way feeding mechanism is arranged between the sleeve and the lower limiting ring; a trigger cylinder is arranged at the bottom of the lower limiting ring, an oil inlet pipe is slidably arranged at the bottom of the trigger cylinder, and the oil inlet pipe penetrates through the outer wall of the sleeve; a switch structure is arranged on the inner wall of the sleeve, and the switch structure is opposite to the oil inlet pipe; and a trigger block is arranged at the bottom of the rod body. During use, the shock-absorbing front fork can automatically adjust the elastic force applied outward according to the state of the shock-absorbing spring, without manual adjustment by the user, and has the advantage of convenient use.

Description

TECHNICAL FIELD

[0001] The present application relates to a motorcycle shock absorbing accessory, in particular, to a motorcycle shock absorbing front fork. BACKGROUND

[0002] At present, a two-wheeled vehicle suspension disclosed in Chinese patent No. CN114179957A includes a front fork, a main rod installed at the upper end of the front fork, a shock absorber assembly and a balance rod assembly installed at the lower end of the front fork, the shock absorber assembly includes a shock absorber and a spring arranged on the outer periphery of the shock absorber, the shock absorber includes a sleeve and a rod body, one end of the rod body is movably arranged in the sleeve, the other end of the rod body is fixedly connected with the front fork, the upper end of the rod body is formed with an upper limiting ring, the outer periphery of the sleeve is formed with a lower limiting ring, and the spring is abutted between the upper limiting ring and the lower limiting ring. When the front fork is subjected to force, the front fork will drive the rod body to move downward, thereby compressing the spring through the upper limiting ring and the lower limiting ring, thereby playing a shock absorbing role. However, with the increase of the use time of the above-mentioned suspension, the spring force will gradually weaken, so that in the compression stroke, the problem of too large compression stroke affecting the driving comfort will occur. SUMMARY

[0003] Therefore, the present application aims to provide a motorcycle shock absorbing front fork which has the advantage of being able to adjust the spring force and thereby ensure the driving comfort.

[0004] In order to solve the above technical problems, the technical scheme of the present application is as follows: a motorcycle shock absorbing front fork, comprising a front fork shoulder, a main rod arranged at the top center of the front fork shoulder, and two shock absorber assemblies symmetrically arranged at the bottom of both sides of the front fork shoulder.

[0005] The shock absorber assembly comprises a shock absorber and a shock absorbing spring sleeved on the outer side of the shock absorber.

[0006] The shock absorber comprises a sleeve and a rod body, a lower limiting ring is arranged at the outer wall of the sleeve, the bottom of the rod body is slidably arranged in the sleeve, the top of the rod body is fixedly arranged at the bottom of the front fork shoulder, an upper limiting ring is arranged at the outer wall of the rod body, and the two ends of the shock absorbing spring are respectively abutted with the lower limiting ring and the upper limiting ring.

[0007] A guide groove is formed at the outer wall of the sleeve, the guide groove extends along the axial direction of the sleeve, the lower limiting ring is slidably sleeved on the outer side of the sleeve, a guide block is arranged at the inner wall of the lower limiting ring, and the guide block is slidably connected in the guide groove.

[0008] A one-way feeding mechanism is arranged between the sleeve and the lower limiting ring, and the one-way feeding mechanism is used to ensure that the lower limiting ring can only slide towards the top of the sleeve.

[0009] The bottom of the lower limit ring is provided with a trigger cylinder, and the bottom of the trigger cylinder is slidingly provided with an oil inlet pipe penetrating through the outer wall of the sleeve to communicate the inner cavity of the trigger cylinder with the inner cavity of the sleeve.

[0010] The inner wall of the sleeve is provided with a switch structure opposite to the oil inlet pipe to block the oil inlet pipe.

[0011] The bottom of the rod body is provided with a trigger block, and when the trigger block touches the switch structure, the trigger block can drive the switch structure to unblock the oil inlet pipe.

[0012] According to the above technical scheme, when the elastic force of the damping spring gradually weakens, the elastic force that the damping spring can exert on the rod body in the initial state will decrease, so that the stroke of the rod body sliding in the sleeve gradually increases during the use of the damping fork. When the trigger block touches the switch structure during the downward movement of the rod body, the switch structure will unblock the oil inlet pipe, and at this time, the oil in the sleeve will enter the trigger cylinder through the oil inlet pipe under the action of the rod body, thereby driving the sleeve to slide upward to compress the damping spring, so that the elastic force that the damping spring can exert on the rod body in the initial state increases, so that the stroke of the rod body during the use of the damping fork is reduced, ensuring the comfort of driving. The damping fork can automatically adjust the elastic force exerted outward according to the state of the damping spring during use, without the need for manual adjustment by the user, having the advantage of convenient use. The one-way feeding mechanism can limit the downward movement of the lower limit ring to ensure the elastic force exerted outward by the damping spring.

[0013] Preferably, the bottom of the guide groove is provided with a receiving groove extending along the axial direction of the sleeve, the one-way feeding mechanism comprises a ratchet, a pawl and a pressing spring, the ratchet is evenly distributed in the receiving groove, the pawl is hinged to the side wall of the guide block, and the two ends of the pressing spring are connected to the guide block and the pawl respectively to drive the end of the pawl to abut against the bottom surface of the ratchet.

[0014] According to the above technical scheme, the end of the pawl abuts against the bottom surface of the ratchet to limit the downward movement of the lower limit ring, thereby ensuring the elastic force exerted outward by the damping spring. The receiving groove is provided at the bottom of the guide groove, and the ratchet and the pawl are arranged in the receiving groove, so that the sliding of the guide block is not easily affected.

[0015] Preferably, an inner wall of the lower limit position ring is provided with a sliding hole extending along a radial direction of the lower limit position ring, the guide block is slidably connected in the sliding hole, and an outer wall of the lower limit position ring is provided with a threaded hole extending along the radial direction of the lower limit position ring and coaxially connected with the sliding hole;

[0016] The connecting rod is threadedly connected to the threaded hole and protrudes from the lower limit position ring, and the other end of the connecting rod is rotatably connected to the guide block.

[0017] Rotating the connecting rod can drive the guide block into the sliding hole, so that the pawl is separated from the ratchet teeth.

[0018] According to the above technical solution, when the lower limit position ring needs to be reset, only the connecting rod needs to be reversely rotated to drive the guide block into the sliding hole, so that the pawl is separated from the ratchet teeth.

[0019] Preferably, a limiting flange is arranged on a side wall of the connecting rod, the guide block comprises a guide cover body and a guide seat body which are buckled with each other, the guide cover body is provided with a connecting hole penetrating therethrough, the connecting rod passes through the connecting hole, the guide seat is provided with a movable slot, the movable slot is coaxially communicated with the connecting hole, and the limiting flange is rotatably connected in the movable slot.

[0020] According to the above technical solution, the guide cover body and the guide seat body are buckled with each other, so that the guide block and the connecting rod have the advantage of being convenient to disassemble and assemble. The limiting flange cooperates with the guide cover body to limit the connecting rod, so that the connecting rod is not easy to be separated from the guide block.

[0021] Preferably, two sealing rings are embedded in the trigger cylinder, the two sealing rings are arranged along an axial direction of the trigger cylinder, and the two sealing rings tightly hold the oil inlet pipe.

[0022] According to the above technical solution, the two sealing rings tightly hold the oil inlet pipe, so that the oil entering the inside of the trigger cylinder is not easy to leak out from the gap between the trigger cylinder and the oil inlet pipe.

[0023] Preferably, an inner cavity of the trigger cylinder comprises a sliding limiting portion and a mounting connecting portion which are sequentially communicated from top to bottom, an inner diameter of the sliding limiting portion is greater than an inner diameter of the mounting connecting portion, the two sealing rings are arranged in the mounting connecting portion, the oil inlet pipe comprises a sliding section slidably arranged in the sliding limiting portion and a connecting section passing through the mounting connecting portion, an outer diameter of the sliding section is greater than an outer diameter of the connecting section, and the two sealing rings tightly hold the connecting section.

[0024] According to the above technical solution, the oil inlet pipe arranged as above is not easy to be separated when relatively sliding with the trigger cylinder.

[0025] Preferably, the switch structure comprises a switch sliding plate and a reset spring, the switch sliding plate is slidingly connected at the inner wall of the sleeve, the sliding direction of the switch sliding plate is the axial direction of the sleeve, the reset spring is located below the switch sliding plate, and two ends of the reset spring are connected with the switch sliding plate and the sleeve respectively, and the switch sliding plate blocks the oil inlet pipe when the reset spring is in a force balance state.

[0026] Through the above technical solution, the reset spring makes the switch sliding plate relative to the oil inlet pipe by the elastic force to block the pipe opening of the oil inlet pipe.

[0027] Preferably, the trigger block comprises an extension rod fixedly arranged at the bottom of the rod body and a trigger plate fixedly arranged at the bottom of the extension rod, and the trigger plate is uniformly provided with a plurality of through holes.

[0028] Through the above technical solution, the trigger plate is uniformly provided with a plurality of through holes, so that the oil in the sleeve is not easily affected during the movement of the trigger plate. The trigger plate is connected with the rod body through the extension rod, so that the space in the sleeve is small and the damping effect of the damping fork is not easily affected. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of an embodiment;

[0030] Figure 2 It is an A part enlarged view of Figure 1

[0031] Figure 3 It is a B part enlarged view of Figure 1

[0032] Figure 4 It is a C part enlarged view of Figure 1

[0033] Mark: 1, fork shoulder; 2, main rod; 3, damping assembly; 31, shock absorber; 311, sleeve; 312, rod body; 32, damping spring; 4, lower limit ring; 5, upper limit ring; 6, guide groove; 7, guide block; 71, guide cover body; 72, guide seat body; 8, one-way feeding mechanism; 81, ratchet; 82, pawl; 83, abutting spring; 9, trigger cylinder; 10, oil inlet pipe; 101, sliding section; 102, connecting section; 11, switch structure; 111, switch sliding plate; 112, reset spring; 12, trigger block; 121, extension rod; 122, trigger plate; 13, storage groove; 14, sliding hole; 15, threaded hole; 16, connecting rod; 17, limiting flange; 18, connecting hole; 19, movable groove; 20, sealing ring; 21, sliding limiting part; 22, mounting connecting part; 23, through hole. EMBODIMENT​​​

[0034] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings, so that the technical scheme of the present application is easier to understand and grasp.

[0035] A motorcycle damping front fork, comprising a front fork shoulder 1, a main rod 2 arranged at the top center of the front fork shoulder 1, and two damping assemblies 3 arranged symmetrically at the bottom of the two sides of the front fork shoulder 1.

[0036] The damping assembly 3 comprises a shock absorber 31 and a damping spring 32 sleeved outside the shock absorber 31.

[0037] The shock absorber 31 comprises a sleeve 311 and a rod body 312, the outer wall of the sleeve 311 is provided with a lower limiting ring 4, the bottom of the rod body 312 is slidingly arranged inside the sleeve 311, the top of the rod body 312 is fixedly arranged at the bottom of the front fork shoulder 1, the outer wall of the rod body 312 is provided with an upper limiting ring 5, and the two ends of the damping spring 32 are respectively in abutment with the lower limiting ring 4 and the upper limiting ring 5.

[0038] The outer wall of the sleeve 311 is provided with a guide groove 6 extending along the axial direction of the sleeve 311. The lower limiting ring 4 is slidingly sleeved outside the sleeve 311, the inner wall of the lower limiting ring 4 is provided with a guide block 7 slidingly connected in the guide groove 6. A one-way feeding mechanism 8 is arranged between the sleeve 311 and the lower limiting ring 4, which is used to ensure that the lower limiting ring 4 can only slide towards the top of the sleeve 311. The bottom of the lower limiting ring 4 is provided with a trigger cylinder 9, the bottom of the trigger cylinder 9 is slidingly provided with an oil inlet pipe 10 penetrating through the outer wall of the sleeve 311, so as to communicate the inner cavity of the trigger cylinder 9 with the inner cavity of the sleeve 311. The inner wall of the sleeve 311 is provided with a switch structure 11 opposite to the oil inlet pipe 10, which is used to block the oil inlet pipe 10. The bottom of the rod body 312 is provided with a trigger block 12, which can drive the switch structure 11 to unblock the oil inlet pipe 10 when the trigger block 12 touches the switch structure 11.

[0039] The bottom of the guide groove 6 is provided with a receiving groove 13 extending along the axial direction of the sleeve 311. The one-way feeding mechanism 8 comprises a ratchet 81, a pawl 82 and a pressing spring 83. The ratchet 81 is evenly distributed in the receiving groove 13, the pawl 82 is hinged to the side wall of the guide block 7, and the two ends of the pressing spring 83 are connected to the guide block 7 and the pawl 82 respectively, so as to drive the end of the pawl 82 to abut against the bottom surface of the ratchet 81.

[0040] The inner wall of the lower limit ring 4 is provided with a sliding hole 14 extending along the radial direction of the lower limit ring 4, the guide block 7 is slidably connected in the sliding hole 14, and the outer wall of the lower limit ring 4 is provided with a threaded hole 15 extending along the radial direction of the lower limit ring 4 and coaxially connected with the sliding hole 14. The connecting rod 16 is further included, one end of the connecting rod 16 is threadedly connected to the threaded hole 15 and protrudes from the lower limit ring 4, and the other end of the connecting rod 16 is rotatably connected to the guide block 7. Rotating the connecting rod 16 can drive the guide block 7 into the sliding hole 14, so that the pawl 82 is separated from the ratchet tooth 81.

[0041] The side wall of the connecting rod 16 is provided with a limiting flange 17. The guide block 7 includes a guide cover 71 and a guide seat 72 that are buckled to each other. The guide cover 71 is provided with a connecting hole 18 through which the connecting rod 16 passes. The guide seat is provided with a movable groove 19 coaxially communicated with the connecting hole 18, and the limiting flange 17 is rotatably connected in the movable groove 19.

[0042] The inside of the trigger cylinder 9 is embedded with two sealing rings 20 arranged along the axial direction of the trigger cylinder 9 and tightly embracing the oil inlet pipe 10. The inner cavity of the trigger cylinder 9 includes a sliding limiting portion 21 and a mounting connecting portion 22 communicated in sequence from top to bottom, the inner diameter of the sliding limiting portion 21 is larger than that of the mounting connecting portion 22, and the two sealing rings 20 are arranged in the mounting connecting portion 22. The oil inlet pipe 10 includes a sliding section 101 slidably arranged in the sliding limiting portion 21 and a connecting section 102 passing through the mounting connecting portion 22, the outer diameter of the sliding section 101 is larger than that of the connecting section 102, and the two sealing rings 20 tightly embrace the connecting section 102.

[0043] The switch structure 11 includes a switch sliding plate 111 and a reset spring 112. The switch sliding plate 111 is slidably connected to the inner wall of the sleeve 311, and the sliding direction of the switch sliding plate 111 is the axial direction of the sleeve 311. The reset spring 112 is located below the switch sliding plate 111, and the two ends of the reset spring 112 are connected to the switch sliding plate 111 and the sleeve 311, respectively. When the reset spring 112 is in a force balance state, the switch sliding plate 111 blocks the oil inlet pipe 10.

[0044] The trigger block 12 includes an extension rod 121 fixedly arranged at the bottom of the rod body 312 and a trigger plate 122 fixedly arranged at the bottom of the extension rod 121. The trigger plate 122 is uniformly distributed with a plurality of through holes 23.

[0045] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A motorcycle shock absorber fork, characterized in that: It includes a fork shoulder (1), a main rod (2) located at the top center of the fork shoulder (1), and two shock absorber assemblies (3) symmetrically arranged 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 provided on the outer wall of the rod (312). The two ends of the shock absorber spring (32) respectively abut against the lower limiting ring (4) and the upper limiting ring (5). A guide groove (6) is provided on the outer wall of the sleeve (311). The guide groove (6) extends along the axial direction of the sleeve (311). The lower limiting ring (4) is slidably sleeved on the outer side of the sleeve (311). A guide block (7) is provided on the inner wall of the lower limiting ring (4). The guide block (7) is slidably connected in the guide groove (6). A one-way feeding mechanism (8) is provided between the sleeve (311) and the lower limiting ring (4). The one-way feeding mechanism (8) is used to ensure that the lower limiting ring (4) can only slide towards the top of the sleeve (311). The bottom of the lower limit ring (4) is provided with a trigger cylinder (9), and the bottom of the trigger cylinder (9) is slidably provided with an oil inlet pipe (10). The oil inlet pipe (10) penetrates the outer wall of the sleeve (311) to connect the inner cavity of the trigger cylinder (9) with the inner cavity of the sleeve (311). A switch structure (11) is provided on the inner wall of the sleeve (311). The switch structure (11) is opposite to the oil inlet pipe (10) to block the oil inlet pipe (10). A trigger block (12) is provided at the bottom of the rod (312). When the trigger block (12) touches the switch structure (11), the trigger block (12) can drive the switch structure (11) to release the blockage of the oil inlet pipe (10).

2. The motorcycle shock-absorbing front fork according to claim 1, characterized in that: The bottom of the guide groove (6) is provided with a receiving groove (13), which extends along the axial direction of the sleeve (311). The one-way feeding mechanism (8) includes ratchet (81), pawl (82) and clamping spring (83). The ratchet (81) is distributed evenly in the receiving groove (13). The pawl (82) is hinged to the side wall of the guide block (7). The two ends of the clamping spring (83) are respectively connected to the guide block (7) and the pawl (82) to drive the end of the pawl (82) to press against the bottom surface of the ratchet (81).

3. A motorcycle shock-absorbing front fork according to claim 2, characterized in that: A sliding hole (14) is provided on the inner wall of the lower limiting ring (4), the sliding hole (14) extends radially along the lower limiting ring (4), the guide block (7) is slidably connected in the sliding hole (14), and a threaded hole (15) is provided on the outer wall of the lower limiting ring (4), the threaded hole (15) extends radially along the lower limiting ring (4) and is coaxially connected to the sliding hole (14); It also includes a connecting rod (16), one end of which is threaded to the threaded hole (15) and protrudes from the lower limiting ring (4), and the other end of which is rotatably connected to the guide block (7); Rotating the connecting rod (16) can drive the guide block (7) into the sliding hole (14), causing the pawl (82) to separate from the ratchet (81).

4. A motorcycle shock-absorbing front fork according to claim 3, characterized in that: The connecting rod (16) has a limiting flange (17) on its side wall. The guide block (7) includes a guide cover (71) and a guide seat (72) that are interlocked. A connecting hole (18) is provided through the guide cover (71). The connecting rod (16) passes through the connecting hole (18). A movable groove (19) is provided on the guide seat. The movable groove (19) is coaxially connected to the connecting hole (18). The limiting flange (17) is rotatably connected in the movable groove (19).

5. A motorcycle shock-absorbing front fork according to claim 1, characterized in that: The trigger cylinder (9) is equipped with two sealing rings (20), which are arranged along the axial direction of the trigger cylinder (9) and both sealing rings (20) tightly grip the oil inlet pipe (10).

6. A motorcycle shock-absorbing front fork according to claim 5, characterized in that: The inner cavity of the trigger cylinder (9) includes a sliding limiting part (21) and a mounting connection part (22) connected sequentially from top to bottom. The inner diameter of the sliding limiting part (21) is larger than the inner diameter of the mounting connection part (22). Both sealing rings (20) are disposed in the mounting connection part (22). The oil inlet pipe (10) includes a sliding section (101) slidably disposed in the sliding limiting part (21) and a connecting section (102) passing through the mounting connection part (22). The outer diameter of the sliding section (101) is larger than the outer diameter of the connecting section (102). Both sealing rings (20) are tightly wrapped around the connecting section (102).

7. A motorcycle shock-absorbing front fork according to claim 1, characterized in that: The switch structure (11) includes a switch slide plate (111) and a return spring (112). The switch slide plate (111) is slidably connected to the inner wall of the sleeve (311), and the sliding direction of the switch slide plate (111) is the axial direction of the sleeve (311). The return spring (112) is located below the switch slide plate (111). The two ends of the return spring (112) are respectively connected to the switch slide plate (111) and the sleeve (311). When the return spring (112) is in a state of force balance, the switch slide plate (111) blocks the oil inlet pipe (10).

8. A motorcycle shock-absorbing front fork according to claim 7, characterized in that: The trigger block (12) includes an extension rod (121) fixedly disposed at the bottom of the rod body (312) and a trigger plate (122) fixedly disposed at the bottom of the extension rod (121). The trigger plate (122) has a plurality of through holes (23) evenly distributed on it.

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