Oil seal assembly and shock absorber

Abstract

The utility model belongs to the technical field of automobile accessories, and particularly relates to an oil seal assembly and a shock absorber. Comprising a base body connected with a first pipe fitting, the base body is provided with an inner circumferential wall and a through hole, the inner circumferential wall forms the through hole, and a first ring groove is concavely formed in the inner circumferential wall in the radial direction; the first sealing piece is arranged in the first ring groove and at least partially protrudes out of the first ring groove in the radial direction into the through hole; a threaded section is arranged at the bottom end of the base body, and the base body is in threaded connection with the first pipe fitting through the threaded section. The threaded section is provided with a threaded structure and a circular groove which is concavely arranged in the radial direction, the circular groove is arranged adjacent to the threaded structure, the circular groove is further provided with an oil seal ring, and the oil seal ring abuts against one circumferential surface of the first pipe fitting; the problems existing in the prior art are solved, the structural design is reasonable, the damping effect is good, and oil leakage can be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and particularly relates to an oil seal assembly and a shock absorber. Background Art

[0002] A shock absorber is one of the important devices necessary for a vehicle body. Its main function is to absorb the impact force generated by the continuous up and down vibration of the vehicle body as it bumps on the road surface, thereby providing a more comfortable riding experience for the rider. Among them, the shock absorber mainly converts the impact force into heat energy and consumes it by the resistance generated when the internal oil flows through various components (such as pistons and damping holes), so as to achieve the purpose of buffering and shock absorption.

[0003] However, after long-term use of the shock absorber, its oil is prone to getting dirty and generating dirt, and the dirty oil is prone to leakage, resulting in difficult smooth operation of various components (such as pistons), and reducing the shock absorption effect.

[0004] Therefore, it is necessary to provide a novel and progressive oil seal assembly and shock absorber to solve the above problems. Summary of the Utility Model

[0005] To solve the defects and deficiencies of the prior art; the purpose of the utility model is to provide an oil seal assembly and a shock absorber, which can prevent oil leakage.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] An oil seal assembly of the utility model is provided on the first pipe fitting of the shock absorber. The oil seal assembly includes: a seat body, which is assembled to the first pipe fitting. The seat body is provided with an inner peripheral wall and a through hole, and the inner peripheral wall forms the through hole. The inner peripheral wall is radially recessed with a first annular groove; and a first sealing member, which is arranged in the first annular groove and at least partially protrudes radially from the first annular groove into the through hole.

[0008] A shock absorber of the utility model includes: a housing, which includes a first pipe fitting and a second pipe fitting that are slidably sleeved and connected to each other. The interior of the first pipe fitting and the interior of the second pipe fitting are mutually communicated to jointly enclose an internal space; a buffer mechanism, which is arranged in the first pipe fitting and located in the internal space, and the buffer mechanism is movably inserted into the second pipe fitting; and an oil seal assembly, which is arranged between the first pipe fitting and the second pipe fitting. The oil seal assembly includes a seat body and a first sealing member. The seat body is assembled to the first pipe fitting. The seat body is provided with an inner peripheral wall and a through hole, and the inner peripheral wall forms the through hole. The inner peripheral wall is radially recessed with a first annular groove. The first sealing member is arranged in the annular groove and at least partially protrudes radially from the first annular groove into the through hole. The first sealing member is annularly abutted against the peripheral surface of the second pipe fitting.

[0009] Preferably, it includes a second seal. An outer peripheral wall is provided on the other opposite side of the inner peripheral wall within the seat body. A second annular groove is radially recessed in the outer peripheral wall. The second seal is disposed in the second annular groove and protrudes radially outward from the second annular groove to abut against the circumferential surface of the first pipe fitting.

[0010] Preferably, the seat body is in a ring shape and has an I-shaped cross-section.

[0011] Preferably, a threaded section is provided at the bottom end of the seat body, and the seat body is screwed to the first pipe fitting with the threaded section.

[0012] Preferably, the threaded section is provided with a thread structure and a radially recessed annular groove. The annular groove is adjacent to the thread structure. An oil seal ring is further provided in the annular groove, and the oil seal ring abuts against the circumferential surface of the first pipe fitting.

[0013] Preferably, it includes an oil seal member, and the oil seal member is disposed above the first seal.

[0014] Preferably, it includes a gasket, and the gasket is disposed between the first seal and the oil seal member.

[0015] Preferably, a threaded section is provided at the bottom end of the seat body, and the seat body is screwed to the first pipe fitting with the threaded section; the threaded section is provided with a thread structure and a radially recessed annular groove. The annular groove is adjacent to the thread structure. An oil seal ring is further provided in the annular groove, and the oil seal ring abuts against the circumferential surface of the first pipe fitting; an open end is provided at a relative end of the seat body where the threaded section is provided. A dust-proof member is further provided at the open end. The oil seal member is disposed between the dust-proof member and the first seal; a clamping groove is further provided on the inner peripheral wall of the seat body. A fastener is further clamped in the clamping groove. The fastener is disposed between the dust-proof member and the oil seal member. The fastener protrudes radially from the clamping groove and can axially abut against the oil seal member; a ring boss protrudes radially inwardly inside the seat body. The first annular groove is provided on the ring boss. The gasket is disposed on the ring boss.

[0016] Preferably, the oil seal assembly further includes a second seal and a bearing member. The first pipe fitting is provided with an open end. The second pipe fitting passes through the first pipe fitting from the open end. The second seal, the first seal, and the bearing member are arranged in sequence away from the open end.

[0017] The technology of the present utility model avoids the problems existing in the prior art, has a reasonable structural design, good shock absorption effect, and can prevent oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the present utility model will be described in detail by the following specific embodiments and the accompanying drawings.

[0019] Figure 1 It is a perspective view of Embodiment 1 of the present application.

[0020] Figure 2 This is an exploded view of the first embodiment of the present application.

[0021] Figure 3 This is a sectional view of the first embodiment of the present application.

[0022] Figure 4 is Figure 3 a partial enlarged view of

[0023] Figure 5 This is an isometric exploded view of the second embodiment of the present application.

[0024] Figure 6 This is a partial cross-sectional view of the second embodiment of the present application;

[0025] Explanation of reference numerals: 1: shock absorber; 10: housing; 11: first pipe fitting; 12: second pipe fitting; 13: internal space; 14: buffer mechanism; 20, 20a: oil seal assembly; 21, 21a: seat body; 22: inner peripheral wall; 221: clamping groove; 23: through hole; 24: first annular groove; 25: outer peripheral wall; 26: second annular groove; 27: bottom end portion; 271: threaded section; 272: thread structure; 273: annular groove; 28: opening end portion; 29: annular boss; 30: first seal; 40: second seal; 50: oil seal ring; 60: oil seal member; 70: gasket; 80: dust-proof member; 90: fastener; 100: bearing member. Detailed Description of the Embodiment

[0026] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts of the present utility model.

[0027] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less related to the present utility model are omitted. Embodiment

[0028] Please refer to Figures 1 to 4 , for the oil seal assembly 20 of this embodiment, which is provided on a first pipe fitting 11 of a shock absorber 1, the oil seal assembly 20 includes a seat body 21 and a first seal 30.

[0029] The seat body 21 is for being assembled to the first pipe fitting 11. The seat body 21 is provided with an inner peripheral wall 22 and a through hole 23. The inner peripheral wall 22 forms the through hole 23. The inner peripheral wall 22 is radially concavely provided with a first annular groove 24. The first seal 30 is arranged in the first annular groove and at least partially protrudes radially from the first annular groove 24 into the through hole 23. In this embodiment, the first seal 30 is a sealing ring.

[0030] Furthermore, the first seal 30 abuts against a second pipe fitting 12 of the shock absorber 1, and the second pipe fitting 12 penetrates through the through hole 23.

[0031] Thereby, the sealing effect is good, and it can prevent the liquid (such as hydraulic oil) in the shock absorber 1 from leaking out or entering. In addition, the oil seal assembly 20 is detachably assembled to the first pipe fitting 11, so it is easy to manufacture and assemble the first seal 30.

[0032] The oil seal assembly 20 further includes a second seal 40. On the other opposite side of the seat body 21 where the inner peripheral wall 22 is provided, an outer peripheral wall 25 is further provided. The outer peripheral wall 25 is radially concavely provided with a second annular groove 26. The second seal 40 is arranged in the second annular groove 26 and protrudes radially outward from the second annular groove 26 to abut against the peripheral surface of the first pipe fitting 11. Specifically, the seat body 21 is in a ring shape and has an I-shaped cross-section. The second seal 40 is a sealing ring. Therefore, the oil in the shock absorber 1 is not likely to leak out between the inner side of the seat body 21 and the second pipe fitting 12 and between the outer side and the first pipe fitting 11.

[0033] The oil seal assembly 20 further includes an oil seal 60, and the oil seal 60 is arranged above the first seal 30. Preferably, the oil seal assembly 20 further includes a gasket 70, and the gasket 70 is arranged between the first seal 30 and the oil seal 60. With a multi-layer oil seal structure (the oil seal 60 and the first seal 30), a high sealing effect is provided. Specifically, the oil and dirt in the oil in the shock absorber 1 can be blocked by the first seal 30 first and then by the oil seal 60. In addition, by raising the oil seal 60 with the gasket 70, the oil seal 60 is kept away from the first seal 30, making it more difficult for the oil to leak out. Embodiment

[0034] Please refer to Figures 5 to 6 , a threaded section 271 is provided at a bottom end portion 27 of the seat body 21a of the oil seal assembly 20a, and the seat body 21a is screwed to the first pipe fitting 11a with the threaded section 271. Specifically, the top end portion of the first pipe fitting 11a has a threaded section 111 that is detachably screwed to the threaded section 271.

[0035] The first annular groove 24 is close to the bottom end portion 27. Therefore, when the seat body 21a is not combined with the first pipe fitting 11, the first seal 30 can be first installed from the opening of the bottom end portion 27 of the seat body 21a into the first annular groove 24, and then the threaded section 271 is screwed with the threaded section 271 of the first pipe fitting 11. Therefore, it is beneficial for disassembly, assembly and manufacturing, and has a good anti-leakage effect. Preferably, the threaded section 271 is provided with a thread structure 272 and an annular groove 273 recessed radially. The annular groove 273 is arranged adjacent to the thread structure 272, and an oil seal ring 50 is further provided in the annular groove 273. The oil seal ring 50 abuts against the circumferential surface of the first pipe fitting 11. Thereby, the oil seal ring 50 can abut and seal between the seat body 21a and the first pipe fitting 11 to prevent the oil in the shock absorber 1 from leaking out.

[0036] The seat body 21a is provided with an opening end portion 28 at a relative end of the threaded section 271. A dust-proof member 80 is further provided at the opening end portion 28. The oil seal member 60 is arranged between the dust-proof member 80 and the first seal 30. A clamping groove 221 is further provided on the inner peripheral wall 22 of the seat body 21a. A fastener 90 is clamped in the clamping groove 221. The fastener 90 is arranged between the dust-proof member 80 and the oil seal member 60. The fastener 90 protrudes radially from the clamping groove 221 and can axially abut against the oil seal member 60. An annular boss 29 protrudes radially inside the seat body 21a. The first annular groove 24 is provided on the annular boss 29. The gasket 70 is arranged on the annular boss 29. In this way, it can prevent dust and impurities on the outside from falling into the first pipe fitting 11, and make the oil seal member 60 and the first seal 30 not easily separated from the first pipe fitting 11, and can tightly abut against the second pipe fitting 12.

[0037] This application is further related to a shock absorber 1, which includes a housing 10, a buffer mechanism 14 and the above-mentioned oil seal assembly 20.

[0038] The housing 10 includes a first pipe fitting 11 and a second pipe fitting 12 which are slidably sleeved and connected to each other. The interior of the first pipe fitting 11 and the interior of the second pipe fitting 12 communicate with each other to jointly enclose an internal space 13. The buffer mechanism 14 is disposed in the first pipe fitting 11 and located in the internal space 13. The buffer mechanism 14 is movably inserted into the second pipe fitting 12. In this embodiment, the buffer mechanism 14 includes a damping unit and a pushing unit to provide a shock absorption effect. The oil seal assembly 20 is disposed between the first pipe fitting 11 and the second pipe fitting 12. The oil seal assembly 20 includes a seat body 21 and a first seal 30. The seat body 21 is assembled to the first pipe fitting 11. The seat body 21 is provided with an inner peripheral wall 22 and a through hole 23. The inner peripheral wall 22 forms the through hole 23. The inner peripheral wall 22 is radially recessed with a first annular groove 24. The first seal 30 is disposed in the annular groove and at least partially protrudes radially from the first annular groove 24 into the through hole 23. The first seal 30 abuts against a peripheral surface of the second pipe fitting 12. Thus, when the first pipe fitting 11 and the second pipe fitting 12 expand and contract, the oil body in the shock absorber 1 can be first blocked by the first seal 30 and is not easily leaked out. Preferably, the oil seal assembly 20 further includes a second seal 40 and a bearing member 100 (such as a self-lubricating bearing). The first pipe fitting 11 is provided with an open end 28. The second pipe fitting 12 passes through the first pipe fitting 11 from the open end 28. The second seal 40, the first seal 30 and the bearing member 100 are sequentially arranged away from the open end 28.

[0039] Therefore, the dirt of the oil body can be first blocked by the first seal 30 and is not easily leaked out, and the shock absorption effect can be maintained.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

[0041] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil seal assembly, arranged in a first pipe member of a shock absorber, characterized in that: include: A seat body connected to the first pipe member, the seat body is provided with an inner peripheral wall and a through hole, the inner peripheral wall forms the through hole, and the inner peripheral wall is radially recessed with a first annular groove; The first sealing member is arranged in the first annular groove and at least partially protrudes radially from the first annular groove into the through hole.

2. The oil seal assembly according to claim 1, characterized in that: The second seal comprises a second seal, an outer peripheral wall on the other side opposite to the inner peripheral wall is arranged in the seat body, a second annular groove is radially recessed in the outer peripheral wall, and the second seal is arranged in the second annular groove and radially protrudes outward from the second annular groove to abut against the circumferential surface of the first pipe.

3. The oil seal assembly according to claim 2, characterized in that: The seat body is in a ring shape and has an I-shaped cross section.

4. The oil seal assembly according to claim 1, characterized in that: The bottom end of the seat body is provided with a threaded section, and the seat body is threadedly connected with the first pipe member via the threaded section.

5. The oil seal assembly according to claim 4, characterized in that: The threaded section is provided with a threaded structure and a radially recessed annular groove, the annular groove is arranged adjacent to the threaded structure, and the annular groove is further provided with an oil seal ring, which abuts against a peripheral surface of the first pipe member.

6. The oil seal assembly according to claim 1, characterized in that: The utility model further comprises an oil seal component which is arranged above the first seal component.

7. The oil seal assembly according to claim 6, characterized in that: The utility model further comprises a gasket which is arranged between the first sealing component and the oil sealing component.

8. The oil seal assembly according to claim 7, characterized in that: The bottom end of the seat body is provided with a threaded section, and the seat body is threadedly connected to the first pipe fitting by the threaded section; the threaded section is provided with a threaded structure and a radially recessed annular groove, the annular groove is arranged adjacent to the threaded structure, and the annular groove is further provided with an oil seal ring, and the oil seal ring abuts against a circumferential surface of the first pipe fitting; the seat body is provided with an open end at an opposite end of the threaded section, and a dustproof part is further provided at the open end, and the oil seal is arranged between the dustproof part and the first seal; the inner peripheral wall of the seat body is further provided with a groove, and a fastener is further clamped in the groove, and the fastener is arranged between the dustproof part and the oil seal, and the fastener radially protrudes from the groove and can axially clamp against the oil seal; an annular boss is radially protruded from the inner side of the seat body, the annular boss is provided with the first annular groove, and a gasket is arranged on the annular boss.

9. A shock absorber, characterized in that: include: The shell includes a first pipe and a second pipe connected to each other by a sleeve, and the heating interior of the first pipe is connected to the heating interior of the second pipe to form an internal space; A buffer mechanism is disposed in the first tube and located in the internal space and can be movably inserted into the second tube; The oil seal assembly is arranged between the first pipe fitting and the second pipe fitting, and includes a seat body and a first sealing member. The seat body is connected to the first pipe fitting, and the seat body is provided with an inner circumferential wall and a through hole. The inner circumferential wall constitutes the through hole, and the inner circumferential wall is radially recessed with a first annular groove. The first sealing member is arranged in the annular groove and at least partially radially protrudes from the first annular groove into the through hole. The first sealing member is abutted against a circumferential surface of the second pipe fitting.

10. The shock absorber according to claim 9, characterized in that: The oil seal assembly further comprises a second seal and a bearing. The first pipe is provided with an open end, the second pipe passes through the first pipe from the open end, and the second seal, the first seal and the bearing are sequentially arranged away from the open end.

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