Sealing structure for guider of shock absorber
By designing the flange and groove structure of the support ring and oil seal in the shock absorber guide, as well as the threaded connection of the fixing ring and sealing ring, the problem of easy damage of traditional sealing structure is solved, and the stability of sealing effect and long service life of shock absorber are achieved.
Patent Information
- Application Number
- CN202520555771.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-27
AI Technical Summary
Traditional shock absorber guide sealing structures have poor sealing performance and durability, and are prone to deformation or damage under high pressure and vibration, leading to hydraulic oil leakage and affecting the performance of the shock absorber.
A guide sealing structure including a first sealing structure and a second sealing structure is designed. The first sealing structure enhances the anti-displacement capability through the flange and groove design of the support ring and oil seal. The second sealing structure forms an external protective barrier through the threaded connection of the fixing ring and the sealing ring to prevent dust and impurities from entering.
It effectively prevents hydraulic oil leakage, maintains stable sealing performance, prevents deformation and damage to the sealing structure, extends the service life of the shock absorber, ensures internal cleanliness, and maintains stable shock absorber performance.
Smart Images
Figure CN223708398U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of shock absorber, especially relates to a shock absorber guider sealing structure. BACKGROUND
[0002] In the field of automobile, motorcycle, engineering machinery etc., shock absorber plays the key role of buffering vibration, guaranteeing smooth driving and normal operation of equipment, and the guider sealing structure is an important part of the shock absorber, which directly affects the performance and service life of the shock absorber, in addition, modern industry has the demand of light weight and miniaturization to equipment, which requires the shock absorber and its sealing structure to minimize the volume and weight while ensuring performance, therefore, it is an important research direction of the industry to develop the shock absorber guider sealing structure which is more efficient, reliable, adaptive to complex working conditions and meets the light weight requirement.
[0003] The traditional shock absorber guider sealing structure is relatively simple, and the sealing effect and durability are poor, in the case that the shock absorber bears large pressure and vibration, the sealing structure may be deformed or damaged, and hydraulic oil leakage problem is prone to occur, which leads to the performance decline of the shock absorber, therefore, we propose a shock absorber guider sealing structure. UTILITY MODEL CONTENT
[0004] The utility model discloses a shock absorber guider sealing structure, which solves the problem of the traditional shock absorber guider sealing structure being relatively simple, poor sealing effect and durability, and the sealing structure being deformed or damaged under the condition that the shock absorber bears large pressure and vibration, and the problem of hydraulic oil leakage problem being prone to occur, which leads to the performance decline of the shock absorber.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a shock absorber guider sealing structure, which comprises a shock absorber body and a guider body, the guider body is arranged in the inside of the shock absorber body, the inside and the outside of the guider body are respectively provided with a first sealing structure and a second sealing structure, a piston rod is movably connected in the inside of the guider body, the first sealing structure comprises a support ring, an annular groove is formed in one end of the inside of the guider body, the support ring is connected with a flange through an oil seal, and a recess is formed in the inside of the support ring.
[0006] As a preferred scheme, the support ring is arranged in the inside of the annular groove, anti-skid strips are formed on the circumferential outer wall of the support ring, and the anti-skid strips are in contact with the inner wall of the annular groove.
[0007] As a preferred scheme, the flange is fixedly installed on the circumferential surface of the oil seal, and the flange is clamped in the inside of the recess.
[0008] Preferably, the inner wall of the oil seal is provided with a lip, and the lip is in contact with the circumferential surface of the piston rod.
[0009] Preferably, the second sealing structure comprises a fixed ring and a sealing ring fixedly installed at one end of the outer surface of the guide body, and a plurality of groups of thread holes in circumferential array are formed in the surfaces of the fixed ring and the sealing ring, and the internal threads of the plurality of groups of thread holes are connected with locking bolts.
[0010] Preferably, a first sealing ring is fixedly installed between the fixed ring and the sealing ring, a notch is formed in the surface of the side of the sealing ring away from the fixed ring, and a second sealing ring is fixedly installed in the notch, and the inner walls of the first sealing ring and the second sealing ring are in contact with the circumferential surface of the piston rod.
[0011] The technical effects and advantages of the present application are as follows:
[0012] 1. By setting the first sealing structure, when installing, the support ring is placed into the annular groove of the guide body, and when the shock absorber body is working, the piston rod will reciprocate in the guide body, the lip of the oil seal is tightly combined with the surface of the piston rod, a sealing barrier is constructed, the leakage of hydraulic oil in the shock absorber body from the gap between the piston rod and the guide body is prevented, the oil seal and the support ring are designed with a flange and a groove, the displacement resistance is enhanced, the support ring provides stable support behind the oil seal, and the oil seal always maintains good sealing performance during work, even if the shock absorber body bears large pressure and vibration, the oil seal can be effectively prevented from deforming and being damaged.
[0013] 2. By setting the second sealing structure, the fixed ring is installed on the circumferential surface of the guide body, the sealing ring and the fixed ring are connected through the plurality of locking bolts, the first and second sealing rings form a protective barrier on the outside, dust and impurities are blocked from entering the inside of the guide body, the impurities are prevented from polluting the hydraulic oil, the shock absorbing effect is prevented from fluctuating due to the pollution of the hydraulic oil, the design maintains the cleanliness of the inside of the guide body, and the performance of the shock absorber body is ensured to be stable. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a three-dimensional structure schematic view of the present application;
[0015] Figure 2 It is an upper view cross-sectional structure schematic view of the present application;
[0016] Figure 3 It is an internal partial structure schematic view of the present application;
[0017] Figure 4 It is one of the first sealing structure schematic views of the present application;
[0018] Figure 5The first sealing structure schematic view two of the utility model is shown in the figure;
[0019] Figure 6 The second sealing structure schematic view of the utility model is shown in the figure.
[0020] In the figure: 1, shock absorber body; 2, guider main body; 3, second sealing structure; 4, first sealing structure; 5, piston rod; 301, fixed ring; 302, sealing ring; 303, threaded hole; 304, first sealing ring; 305, second sealing ring; 306, locking bolt; 401, annular groove; 402, support ring; 403, oil seal; 404, recess; 405, flange; 406, lip. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0022] Embodiment one:
[0023] Please refer to the drawings of the utility model Figure 1 - the drawings of the utility model Figure 5 A shock absorber guider sealing structure, including shock absorber body 1 and guider main body 2, guider main body 2 is arranged in the inside of shock absorber body 1, and the inside and the outside of guider main body 2 are equipped with first sealing structure 4 and second sealing structure 3 respectively, and piston rod 5 is movably connected in the inside of guider main body 2, first sealing structure 4 includes support ring 402, annular groove 401 is formed in the inside of guider main body 2, support ring 402 is connected with flange 405 through oil seal 403, recess 404 is formed in the inside of support ring 402, support ring 402 is arranged in the inside of annular groove 401, anti-skid strip is formed on the circumferential outer wall of support ring 402, and the anti-skid strip is in contact with the inner wall of annular groove 401, flange 405 is fixedly installed on the circumferential surface of oil seal 403, and flange 405 is clamped in the inside of recess 404, lip 406 is arranged on the inner wall circumferential surface of oil seal 403, and lip 406 is in contact with the circumferential surface of piston rod 5.
[0024] The oil seal 403 is tightly fitted with the piston rod 5 to prevent hydraulic oil in the shock absorber body 1 from leaking, the lip 406 of the oil seal 403 is designed to maintain good sealing performance at all times when the piston rod 5 moves, and can also adapt to different working temperature and pressure conditions, the support ring 402 is generally made of a wear-resistant material such as polytetrafluoroethylene, which provides support for the oil seal 403 to prevent the oil seal 403 from deforming and being damaged under high pressure, and since the support ring 402 generally has a certain elasticity and flexibility, it can be slightly deformed by appropriate external force to be smoothly placed in the annular groove 401, after being placed, the support ring 402 will restore to its original shape by relying on its own elasticity, tightly fitting in the annular groove 401, and there is a certain pre-tightening force between the lip 406 of the oil seal 403 and the piston rod 5, so that it can tightly fit the surface of the piston rod 5, but this pre-tightening force is within the elastic range of the oil seal 403, which can ensure the sealing effect and will not cause excessive deformation or movement of the oil seal 403 due to the movement of the piston rod 5.
[0025] Specifically, during installation, the support ring 402 is first placed in the annular groove 401 of the guide body 2, when the shock absorber body 1 is working, the piston rod 5 reciprocates in the guide body 2, the oil seal 403 forms a sealed barrier by tightly contacting the surface of the piston rod 5 through its lip 406, preventing hydraulic oil in the shock absorber body 1 from leaking out of the gap between the piston rod 5 and the guide body 2, the design of the flange 405 and the groove 404 on the oil seal 403 and the support ring 402 enables them to have a certain displacement resistance, the support ring 402 provides stable support behind the oil seal 403 to ensure that the oil seal 403 can maintain good sealing performance during operation, and even under the condition that the shock absorber body 1 bears a large pressure and vibration, the oil seal 403 can be effectively prevented from deforming and being damaged.
[0026] Example Two:
[0027] Please refer to the accompanying Figure 1 - accompanying Figure 3 and the accompanying Figure 6 , and on the basis of Example One, it is further obtained that the second sealing structure 3 includes a fixed ring 301 fixedly installed at one end of the outer surface of the guide body 2 and a sealing ring 302, a plurality of groups of thread holes 303 are arranged in a circumferential array on the surfaces of the fixed ring 301 and the sealing ring 302, and the internal threads of the plurality of groups of thread holes 303 are connected with locking bolts 306, the first sealing ring 304 is fixedly installed between the fixed ring 301 and the sealing ring 302, a notch is formed on the surface of the side of the sealing ring 302 away from the fixed ring 301, and the second sealing ring 305 is fixedly installed in the notch, and the inner walls of the first sealing ring 304 and the second sealing ring 305 are in contact with the circumferential surface of the piston rod 5.
[0028] Dust, impurities into the shock absorber body 1 inside, can exacerbate the piston rod 5, oil seal 403 and other components wear, the second sealing structure 3 can effectively block the impurities, reduce component wear, prolong the service life of the shock absorber body 1 as a whole.
[0029] Specifically, the fixed ring 301 is installed on the circumferential surface of the guide body 2, and then the sealing ring 302 is connected with the fixed ring 301 through a plurality of locking bolts 306, and the first sealing ring 304 and the second sealing ring 305 form a protective barrier outside to prevent dust, impurities and the like from entering the inside of the guide body 2, so as to avoid the influence of impurities on the cleanliness of the hydraulic oil, thereby causing the shock absorbing effect to fluctuate. The device can ensure internal cleanliness and maintain the performance stability of the shock absorber body 1.
[0030] The utility model discloses a shock absorber guide sealing structure, when installing, first support ring 402 is put into the annular groove 401 of guide body 2, fixed ring 301 is installed on the circumferential surface of guide body 2, and then sealing ring 302 is connected with fixed ring 301 through a plurality of locking bolts 306, when shock absorber body 1 works, piston rod 5 does reciprocating motion in guide body 2, and oil seal 403 forms a sealed barrier through the close contact of the lip edge 406 with the surface of piston rod 5, so as to prevent the hydraulic oil in shock absorber body 1 from leaking out from the gap between piston rod 5 and guide body 2. The flange 405 and the groove 404 on the oil seal 403 and the support ring 402 are designed to have a certain displacement resistance, the support ring 402 provides stable support behind the oil seal 403, ensures that the oil seal 403 can maintain good sealing performance during the working process, and the first sealing ring 304 and the second sealing ring 305 form a protective barrier outside to prevent dust, impurities and the like from entering the inside of the guide body 2, so as to avoid the influence of impurities on the cleanliness of the hydraulic oil. Thus, the whole process is completed.
[0031] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.
Claims
1. A shock absorber guide sealing structure, comprising a shock absorber body (1) and a guide body (2), characterized in that: The guide body (2) is disposed inside the shock absorber body (1). The guide body (2) is provided with a first sealing structure (4) and a second sealing structure (3) on its interior and exterior. A piston rod (5) is movably connected inside the guide body (2). The first sealing structure (4) includes a support ring (402). An annular groove (401) is provided at one end of the guide body (2). The support ring (402) is connected to a flange (405) through an oil seal (403). A groove (404) is provided inside the support ring (402).
2. The shock absorber guide sealing structure according to claim 1, characterized in that: The support ring (402) is disposed inside the annular groove (401), and an anti-slip strip is provided on the outer circumferential wall of the support ring (402), and the anti-slip strip is in contact with the inner wall of the annular groove (401).
3. The shock absorber guide sealing structure according to claim 1, characterized in that: The flange (405) is fixedly installed on the circumferential surface of the oil seal (403), and the flange (405) is engaged inside the groove (404).
4. The shock absorber guide sealing structure according to claim 1, characterized in that: The inner circumferential surface of the oil seal (403) is provided with a lip (406), and the lip (406) is in contact with the circumferential surface of the piston rod (5).
5. The shock absorber guide sealing structure according to claim 1, characterized in that: The second sealing structure (3) includes a fixing ring (301) and a sealing ring (302) fixedly installed on one end of the outer surface of the guide body (2). The fixing ring (301) and the sealing ring (302) are provided with a number of threaded holes (303) arranged in a circumferential array on their surfaces, and the internal threads of the multiple sets of threaded holes (303) are connected to locking bolts (306).
6. The shock absorber guide sealing structure according to claim 5, characterized in that: A first sealing ring (304) is fixedly installed between the fixed ring (301) and the sealing ring (302). A groove is opened on the side surface of the sealing ring (302) away from the fixed ring (301), and a second sealing ring (305) is fixedly installed in the groove. The inner walls of the first sealing ring (304) and the second sealing ring (305) are in contact with the circumferential surface of the piston rod (5).