CN217029779U - Sealing guide structure of shock absorber - Google Patents
Sealing guide structure of shock absorber Download PDFInfo
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- CN217029779U CN217029779U CN202220880596.9U CN202220880596U CN217029779U CN 217029779 U CN217029779 U CN 217029779U CN 202220880596 U CN202220880596 U CN 202220880596U CN 217029779 U CN217029779 U CN 217029779U
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- sealing ring
- shock absorber
- shaped sealing
- guider
- guide structure
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Abstract
The utility model discloses a sealing and guiding structure of a shock absorber, which comprises a guider body, a guider bushing and a sealing ring, wherein a groove is formed in the inner side of the guider body, and the sealing ring is arranged in the groove; the guider bushing is pressed on the inner side of the guider body and is in interference fit with the guider body; the sealing ring is a T-shaped sealing ring, the T-shaped sealing ring is sleeved on the connecting rod, and an outer lip of the T-shaped sealing ring is in contact with the guider body; the sealing and guiding structure also comprises a preloading spring part arranged between the T-shaped sealing ring and the guider bushing; when the shock absorber is compressed or restored to the stroke, the preloading spring part supports the T-shaped sealing ring, so that the distance of the T-shaped sealing ring moving along with the connecting rod is reduced, and even if the T-shaped sealing ring moves along with the connecting rod, a gap cannot be generated between the T-shaped sealing ring and the guider body due to the fact that the outer lip of the T-shaped sealing ring is in contact with the guider body, and the low-speed force value of the shock absorber is affected.
Description
Technical Field
The utility model belongs to the field of guide structures of shock absorbers, and relates to a sealing guide structure of a shock absorber.
Background
The guide structure of the shock absorber is an important component of the shock absorber, and the guide structure mainly has the functions of supporting a cylinder barrel and a liquid storage barrel of the shock absorber, bearing impact load and protecting internal parts of the shock absorber. Particularly, when the internal pressure of the shock absorber is increased instantaneously, the impact pressure is relieved, and the oil seal is protected; in addition, the damping force stabilizing device also has the function of stabilizing the low-speed damping force value.
A connecting rod is arranged in the guide structure for supporting the guide structure; when the shock absorber is in a compression stroke and at the low speed of the shock absorber, the pressure of the lower cavity is not enough to resist the friction force between the connecting rod and the sliding sealing ring, so that the connecting rod can drive the sliding sealing ring in the guide structure to move downwards, and because a gap exists between the sliding sealing ring and the guide structure, before the sliding sealing ring is contacted with a guider bush in the guide structure, a leakage channel exists, so that the pressure leakage is easily caused to influence the low-speed force value of the shock absorber.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a sealing guide structure of a shock absorber.
In order to achieve the purpose, the method can be realized through the following technical scheme: a sealing and guiding structure of a shock absorber comprises a guider body, a guider bushing and a sealing ring, wherein a groove is formed in the inner side of the guider body, and the sealing ring is arranged in the groove; the guider bushing is pressed on the inner side of the guider body and is in interference fit with the guider body; the sealing ring is a T-shaped sealing ring, the T-shaped sealing ring is sleeved on the connecting rod, and an outer lip of the T-shaped sealing ring is in contact with the guider body; the sealing and guiding structure further comprises a preloading spring piece arranged between the T-shaped sealing ring and the guider bushing.
As a further improved technical scheme of the utility model, the spring part is a wave spring.
As a further improved technical scheme of the utility model, at least one layer of wave spring is arranged.
As a further improved technical scheme of the utility model, the wave spring is provided with three layers.
As a further improved technical scheme of the utility model, the inner side of the T-shaped sealing ring is in interference fit with the connecting rod.
As a further improved technical scheme of the utility model, an orifice is arranged at the outer side lip of the T-shaped sealing ring.
As a further improved technical scheme of the utility model, at least one throttling hole is arranged.
As a further improved technical scheme of the utility model, a flow passage is arranged on the guider body.
As a further improved technical scheme of the utility model, at least one flow channel is arranged.
As a further improved technical scheme of the utility model, a sawtooth groove is arranged at the top of the guider body.
The utility model relates to a sealing guide structure of a shock absorber, which can realize the following technical effects: set up the sealing ring into T type sealing ring, set up the spring part of preloading between T type sealing ring and director bush, when the shock absorber compressed or recovered the stroke, the spring part of preloading can support T type sealing ring, makes T type sealing ring reduce the distance of following the connecting rod and moving together, and even T type sealing ring follows the connecting rod and moves, because of the outside lip of T type sealing ring and the contact of director body, also can not produce the clearance between T type sealing ring and the director body, can not influence the low-speed power value of shock absorber.
Drawings
FIG. 1 is a cross-sectional structural schematic view of a guide structure of the present invention;
FIG. 2 is a cross-sectional structural view of the assembly of the connecting rod and guide structure of the present invention;
FIG. 3 is an enlarged schematic view at A of FIG. 2 of the present invention;
FIG. 4 is a schematic perspective view of a wave spring according to the present invention;
FIG. 5 is a schematic top view of the wave spring of the present invention;
FIG. 6 is a schematic cross-sectional view of the deflector construction of the present invention without the wave spring assembled;
in the figure: 1. a connecting rod; 21. a guider body; 22. a guide bush; 23. a T-shaped seal ring; 24. a flow-through channel; 25. a sawtooth groove; 3. a wave spring; 31. an orifice.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely intended to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
A seal guide structure of a shock absorber, as shown in fig. 1, 2, 3, 4, 5 and 6, comprises a guide body 21, a guide bush 22 and a seal ring, wherein a connecting rod 1 is arranged in the guide body 21, the guide body 21 surrounds the connecting rod 1, and the connecting rod 1 is used for supporting the guide structure; a groove is formed in the inner side of the guider body 21, and the sealing ring is arranged in the groove; the guider bush 22 is pressed on the inner side of the guider body 21 and is in interference fit with the guider body 21; the sealing ring is a T-shaped sealing ring 23, the T-shaped sealing ring 23 is sleeved on the connecting rod 1, and the outer side of the T-shaped sealing ring is in contact with the guider body 21; when the speed of the damper is relatively low, the T-shaped sealing ring 23 moves downward together with the connecting rod 1, and therefore a preload spring piece is provided between the T-shaped sealing ring 23 and the guide bush 22. The sealing ring is set to be the T-shaped sealing ring 23, the preloading spring part is arranged between the T-shaped sealing ring 23 and the guider bush 22, when the shock absorber is compressed or restored to a stroke, the preloading spring part can support the T-shaped sealing ring 23, the T-shaped sealing ring 23 is enabled to reduce the distance of moving along with the connecting rod 1, and even if the T-shaped sealing ring 23 moves along with the connecting rod 1, because the outer lip of the T-shaped sealing ring 23 is in contact with the guider body 21, no gap can be generated between the T-shaped sealing ring 23 and the guider body 21, and the low-speed force value of the shock absorber cannot be influenced.
As shown in fig. 1, 2, 3, 4 and 5, in order to save space and cost, the preload spring part is provided as a wave spring 3, the wave spring 3 is a thin ring-shaped elastic metal member formed by a plurality of wave crests and wave troughs, the wave spring 3 of a single layer is an elastic member formed by a metal ring having a plurality of wave crests and wave troughs, and the wave spring 3 of a plurality of layers is seen to be formed by a plurality of wave springs 3 of a single layer; the wave spring 3 is widely applicable to industries such as motors, textile machinery, mechanical manufacturing, petrochemical industry, hydraulic equipment, automobiles and the like, has small installation space, and has the functions of reducing noise and vibration; compared with a common spiral pressure spring, the wave spring 3 can save about half of space when bearing similar load, can reduce the whole volume of equipment, saves cost and is very suitable for places with limited axial space; in order to meet the use requirements of different loads, the thickness and the width of materials can be changed or two or three layers of overlapped wave springs 3 are manufactured, in the scheme, in order to ensure the supporting force of the wave springs 3, the wave springs 3 are provided with three layers.
The motion stroke of the shock absorber comprises a compression stroke and a recovery stroke, wherein the compression stroke is that the connecting rod 1 moves downwards, and the recovery stroke is that the connecting rod 1 moves upwards, and the compression stroke and the recovery stroke are as follows:
rebound stroke of the shock absorber:
the connecting rod 1 upwards moves, because of T type sealing ring 23 with connecting rod 1 interference fit, so T type sealing ring 23 follows connecting rod 1 upward movement together, works as T type sealing ring 23 upward movement to with when director body 21 contacts, realizes the oil circuit and seals, and the epicoele of shock absorber realizes sealedly, just the outside of T type sealing ring 23 with director body 21 contacts, does not have the earial drainage passageway, and fluid can not pass through T type sealing ring 23 with the cavity of resorption is flowed into in the space between the director body 21.
Compression stroke of the shock absorber:
when the speed of the shock absorber is relatively low, the lower cavity pressure ratio is relatively low, the T-shaped sealing ring 23 moves downward along with the connecting rod 1, but due to the pre-pressure of the wave spring 3, the end surface of the T-shaped sealing ring 23 keeps contact with the guider body 21, the outer side of the T-shaped sealing ring 23 contacts with the guider body 21, a leakage passage does not exist, and oil cannot flow into an upper cavity through a gap between the T-shaped sealing ring 23 and the guider body 21.
When the speed of the shock absorber is very low, the friction force between the T-shaped sealing ring 23 and the connecting rod 1 is greater than the pre-pressure of the wave spring 3, the T-shaped sealing ring 23 compresses the wave spring 3, so that a gap is generated between the T-shaped sealing ring 23 and the guider body 21, but a leakage channel is not generated because the outer side of the T-shaped sealing ring 23 is in contact with the guider body 21; the pressure ratio of cavity of resorption this moment is great, for guaranteeing the balance of cavity pressure about, guarantees the low-speed power value T type sealing ring 23's outside lip has seted up orifice 31 for the throttle of fluid set up at least one on the T type sealing ring 23 orifice 31 in this scheme, orifice 31 sets up four, four the even setting of orifice 31 is in on the T type sealing ring 23, orifice 31's aperture is very little, only uses as balanced pressure.
When the speed of the shock absorber is increased, the pressure of the lower cavity of the shock absorber is increased gradually, and the pre-pressure of the wave spring 3 is added, so that the T-shaped sealing ring 23 is ensured not to move downwards along with the connecting rod 1 and is in contact with the guider body 21, a stable force value is achieved, and the effect of reducing the system impact pressure is achieved.
As shown in fig. 1, 2, 3 and 6, a flow passage 24 is provided at an upper end of the guider body 21, the flow passage 24 is provided along a radial direction of the guider body 21 or along an obliquely lower portion of the guider body 21, the connecting rod 1 moves up and down when the shock absorber performs a compression or return stroke, the connecting rod 1 carries a small amount of oil into the guider body 21 during the up and down movement, and the guider body 21 is provided with the flow passage 24, so that the oil can flow out of the guider body 21 through the flow passage 24 to the outer cylinder, and the oil is prevented from being accumulated in the guider body 21; the flow channel 24 may be provided in one, two or more pieces as necessary.
As shown in fig. 1, 2, 3 and 6, a serrated groove 25 is formed at the top of the guide body 21, the serrated groove 25 is located at the edge of the top of the guide body 21, and a curved seal is formed when the end surface of the guide body 21 is spin-riveted to seal, thereby preventing air leakage and oil leakage.
The sealing guide structure of the shock absorber has the advantages that the T-shaped sealing ring 23 is arranged, the inner side of the T-shaped sealing ring 23 is in interference fit with the connecting rod 1, the outer side of the T-shaped sealing ring 23 is in contact with the guider body 21, and when the T-shaped sealing ring moves along with the connecting rod 1, no gap is generated between the T-shaped sealing ring and the guider body 21; the wave spring 3 is arranged, a certain supporting force can be given to the T-shaped sealing ring 23, and the downward movement distance of the T-shaped sealing ring 23 can be reduced when a compression stroke is carried out; the T-shaped sealing ring 23 is provided with an orifice 31, so that the pressure of the upper cavity and the lower cavity of the shock absorber can be balanced when the speed of the shock absorber is very low; the guider body 21 is provided with a flow passage 24 for discharging oil brought in by the connecting rod 1 out of the guider body 21; the top edge of the guider body 21 is provided with a sawtooth groove 25 to prevent air leakage and oil leakage.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications all fall within the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A seal guide structure of a shock absorber, the seal guide structure including a guide body (21), a guide bush (22), and a seal ring, characterized in that: a groove is formed in the inner side of the guider body (21), and the sealing ring is arranged in the groove; the guider bushing (22) is pressed on the inner side of the guider body (21) and is in interference fit with the guider body (21); the sealing ring is a T-shaped sealing ring (23), the T-shaped sealing ring (23) is sleeved on the connecting rod (1), and an outer lip of the T-shaped sealing ring (23) is in contact with the guider body (21); the sealing and guiding structure further comprises a preloading spring piece arranged between the T-shaped sealing ring (23) and the guide bushing (22).
2. The seal guide structure of a shock absorber according to claim 1, wherein: the preload spring part is a wave spring (3).
3. The seal guide structure of a shock absorber according to claim 2, wherein: the wave spring (3) is provided with at least one layer.
4. The seal guide structure of a shock absorber according to claim 3, wherein: the wave spring (3) is provided with three layers.
5. The seal guide structure of a shock absorber according to claim 1, wherein: the inner side of the T-shaped sealing ring (23) is in interference fit with the connecting rod (1).
6. The seal guide structure of a shock absorber according to claim 1, wherein: and an orifice (31) is formed at the outer lip of the T-shaped sealing ring (23).
7. The seal guide structure of a shock absorber according to claim 6, wherein: at least one orifice (31) is provided.
8. The seal guide structure of a shock absorber according to claim 1, wherein: a flow channel (24) is arranged on the guider body (21).
9. The seal guide structure of a shock absorber according to claim 8, wherein: at least one flow channel (24) is provided.
10. The seal guide structure of a shock absorber according to claim 1, wherein: a sawtooth groove (25) is arranged on the top of the guider body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220880596.9U CN217029779U (en) | 2022-04-14 | 2022-04-14 | Sealing guide structure of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220880596.9U CN217029779U (en) | 2022-04-14 | 2022-04-14 | Sealing guide structure of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217029779U true CN217029779U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220880596.9U Active CN217029779U (en) | 2022-04-14 | 2022-04-14 | Sealing guide structure of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217029779U (en) |
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2022
- 2022-04-14 CN CN202220880596.9U patent/CN217029779U/en active Active
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