A skeleton rubber seal ring with deformable fit

Abstract

The utility model discloses a skeleton formula rubber sealing ring of deformable cooperation relates skeleton formula rubber sealing ring technical field, including sealing ring body and support frame, the inside connection of sealing ring body has the support framework, the inboard fixed connection of sealing ring body has the lip contact ring, one side of lip contact ring is connected with sealing lip edge a. This skeleton formula rubber sealing ring of deformable cooperation, through the arc surface of support framework one side can make sealing ring body outside more easily produce deformation, thereby with the inside of axle sleeve is pasted together, thereby completes the cooperation with axle sleeve, and the limit anchor mechanism can anchor the inside of sealing ring body in support framework, avoids the peeling of rubber and framework, ensures that the deformation direction is controllable, and sealing lip edge b can provide secondary seal, and the support frame in auxiliary support mechanism can support sealing ring body and lip contact ring, and the overall strength of skeleton formula rubber sealing ring is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of skeleton rubber sealing ring technology, specifically a deformable skeleton rubber sealing ring. Background Technology

[0002] Skeleton-type rubber seals are sealing elements that combine the support of a metal skeleton with the elastic deformation properties of rubber. They are widely used in hydraulic, pneumatic, automotive, and construction machinery fields. Their core advantage lies in achieving efficient sealing through "skeleton shaping + rubber deformation" while adapting to changes in the fit clearance under different working conditions.

[0003] For example, in the announcement number CN218377343U, a U-shaped sealing ring with anti-failure and aging resistance is provided. When the sealing ring is installed in the shaft hole, the outer wall of the sealing ring body abuts against the inner wall of the bushing, and the inner wall of the sealing ring body abuts against the side wall of the shaft, thereby achieving a sealing effect. In addition, the hollow groove promotes the elastic deformation of the elastic part of the skeleton at the hollow groove position, so that the elastic part fully abuts against the inner wall of the bushing and the side wall of the shaft, thereby promoting sealing and preventing the sealing ring from failing.

[0004] In the above-mentioned solution, the sealing ring is used by opening a hollow groove on one side of the skeleton to enhance the elasticity of the skeleton. This causes the outer side of the sealing ring to deform when it contacts the bushing and fits into the inner wall of the bushing. However, since the cross-section of the skeleton is flat, the end of the skeleton needs to be subjected to a large external force to deform, making it difficult to fit into the bushing. Furthermore, there is no anchoring mechanism between the skeleton and the sealing ring, making it easy for the rubber to peel off from the skeleton, and the direction of deformation is uncontrollable. Utility Model Content

[0005] The purpose of this invention is to provide a deformable, fit-fitting skeleton rubber seal ring to solve the problem mentioned in the background art that existing skeleton rubber seal rings are difficult to deform and fit with the bushing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deformable, fit-fitting skeleton-type rubber sealing ring, comprising a sealing ring body and a support frame, wherein the sealing ring body is internally connected to the support frame; a lip contact ring is fixedly connected to the inner side of the sealing ring body, a sealing lip a is connected to one side of the lip contact ring, and a sealing lip b is provided on the other side of the lip contact ring; a groove is provided on the side of the lip contact ring near the sealing lip a; a limiting anchoring mechanism is provided on the outer side of the support frame; multiple sets of protruding rings are fixed on one side of the sealing lip b, and the cross-section of the protruding rings is semi-circular; an auxiliary support mechanism is provided between the sealing ring body and the lip contact ring.

[0007] Furthermore, an annular groove is provided on the side of the lip contact ring near the sealing ring body, and an annular spring is sleeved inside the annular groove.

[0008] Furthermore, one side of the support frame is arc-shaped, and multiple sets of hollow grooves are formed on the arc-shaped side of the support frame. The multiple sets of hollow grooves are distributed at equal angles about the central axis of the support frame.

[0009] Furthermore, the sealing ring body is made of fluororubber, and the lip contact ring is made of nitrile rubber.

[0010] Furthermore, the limiting anchoring mechanism includes anchoring grooves opened on the inner and outer sides of the support frame, and an anchoring ring is connected to the inner side of the anchoring groove. The cross-section of the anchoring ring and the anchoring groove is serrated, and one side of the anchoring ring is fixed to the inner side of the sealing ring body.

[0011] Furthermore, the auxiliary support mechanism includes a placement groove formed on the inner side of the sealing ring body and the lip contact ring, and a support frame is connected to the inner side of the placement groove. The support frame is M-shaped, and a prying groove is formed on one side of the sealing ring body. The cross-section of the prying groove is V-shaped.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the deformable skeleton rubber sealing ring allows the outer side of the sealing ring body to deform more easily through the arc surface on one side of the supporting skeleton, thereby fitting with the inner side of the bushing and completing the fit with the bushing. The limiting and anchoring mechanism can anchor the supporting skeleton inside the sealing ring body to prevent the rubber from peeling off from the skeleton and ensure that the deformation direction is controllable. The sealing lip b can provide a secondary seal. The support frame in the auxiliary support mechanism can support the sealing ring body and the lip contact ring, enhancing the overall strength of the skeleton rubber sealing ring.

[0013] 1. By setting one side of the support frame to be arc-shaped and opening multiple sets of hollow grooves on the arc surface, the support frame is more likely to deform when the outer side of the sealing ring body contacts the inner side of the bushing, which facilitates the sealing ring body to fit with the inner side of the bushing. Multiple sets of annular protrusions on the sealing lip b side can form a secondary sealing barrier, and the limiting anchoring mechanism can ensure that the deformation direction is controllable.

[0014] 2. By setting a set of support frames between the sealing ring body and the sealing lip a, the M-shaped support frames can produce slight deformation while supporting the sealing ring body and the sealing lip a, thereby adapting to the shape of the shaft. In conjunction with the support skeleton, they can support the sealing ring body and the lip contact ring. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the sealing ring body of this utility model;

[0017] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the support frame of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged view of point A;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the support frame of this utility model.

[0021] In the diagram: 1. Sealing ring body; 2. Support frame; 3. Sealing lip a; 4. Sealing lip b; 5. Groove; 6. Anchoring ring; 7. Hollow groove; 8. Support frame; 9. Prying groove; 10. Lip contact ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1-5 The present invention provides the following technical solution: a deformable and fit skeleton rubber sealing ring, including a sealing ring body 1 and a support frame 8, wherein a support frame 2 is connected inside the sealing ring body 1; a lip contact ring 10 is fixedly connected to the inner side of the sealing ring body 1, a sealing lip a3 is connected to one side of the lip contact ring 10, a sealing lip b4 is provided on the other side of the lip contact ring 10, a groove 5 is provided on the side of the lip contact ring 10 near the sealing lip a3, a limit anchoring mechanism is provided on the outer side of the support frame 2, and multiple sets of protruding rings are fixed on one side of the sealing lip b4, and the cross section of the protruding rings is semi-circular;

[0024] Please see Figure 3 , Figure 4 and Figure 6 The lip contact ring 10 has an annular groove on the side near the sealing ring body 1, and an annular spring is sleeved inside the annular groove; one side of the support frame 2 is arc-shaped, and multiple sets of hollow grooves 7 are opened on the arc-shaped side of the support frame 2, and the multiple sets of hollow grooves 7 are distributed at equal angles about the central axis of the support frame 2.

[0025] Please see Figures 3-5 The sealing ring body 1 is made of fluororubber, and the lip contact ring 10 is made of nitrile rubber. The limiting and anchoring mechanism includes anchoring grooves opened on the inner and outer sides of the support frame 2, and an anchoring ring 6 is connected to the inner side of the anchoring groove. The cross-section of the anchoring ring 6 and the anchoring groove is serrated, and one side of the anchoring ring 6 is fixed to the inner side of the sealing ring body 1.

[0026] Please see Figures 1-5 This deformable, skeleton-type rubber seal ring, in order to fit the size and surface shape of the bushing and shaft, has one side of the support skeleton 2 set as arc-shaped, and multiple sets of hollow grooves 7 are opened on the arc-shaped surface. This makes it easier for the support skeleton 2 to deform when the outer side of the seal ring body 1 contacts the inner side of the bushing, so that the seal ring body 1 fits snugly against the inner side of the bushing. Furthermore, because one side of the support skeleton 2 is arc-shaped, the rubber layer at the corresponding recess of the seal ring body 1 is thicker, and the deformation can be greater, which can adapt to the uneven surface of the inner side of the bushing. The groove 5 opened on one side of the sealing lip a3 makes the sealing lip a3 more easily deformable, and the concave deformation cavity provides elasticity reserve for the sealing lip a3, avoiding excessive stretching and tearing, so that the sealing lip a3 fits tightly. On the outside of the shaft, the medium on one side of the shaft is sealed. Multiple sets of annular protrusions on the side of the sealing lip b4 can fit the tiny scratches on the sealing surface and form a secondary sealing barrier. Multiple sets of anchoring rings 6 on the outside of the support skeleton 2 can anchor the support skeleton 2 inside the sealing ring body 1, preventing the rubber from peeling off from the skeleton and ensuring that the deformation direction is controllable. At the same time, the sealing ring body 1 and the lip contact ring 10 are made of different materials. The sealing ring body 1 is made of high-hardness fluororubber, which can provide support and prevent the lip from turning inward too much, while the lip contact ring 10 is made of low-hardness nitrile rubber, which ensures high deformation capacity, so that the sealing lip a3 and the sealing lip b4 fit with the outside of the shaft. In this way, the deformation fit capability of the skeleton rubber sealing ring can be improved, thereby sealing the connection of the shaft.

[0027] Example 2:

[0028] Please see Figure 4 and Figure 5 Based on Embodiment 1, an auxiliary support mechanism for the skeleton rubber sealing ring is also disclosed. Its specific structure is as follows: An auxiliary support mechanism is provided between the sealing ring body 1 and the lip contact ring 10. The auxiliary support mechanism includes a placement groove opened on the inner side of the sealing ring body 1 and the lip contact ring 10, and a support frame 8 is connected to the inner side of the placement groove. The support frame 8 is M-shaped. A prying groove 9 is opened on one side of the sealing ring body 1, and the cross section of the prying groove 9 is V-shaped.

[0029] Please see Figure 4 and Figure 5To enhance the overall strength of the deformable, fitted skeleton rubber seal, a set of support frames 8 is provided between the seal body 1 and the sealing lip a3. The support frames 8 are M-shaped and can deform slightly. They cooperate with the support frame 2 to support the seal body 1 and the lip contact ring 10. When the skeleton rubber seal needs to be removed, the prying groove 9 on the outside of the seal body 1 can be pried with a pry bar. The prying groove 9 is V-shaped, which facilitates the pry bar to start the seal body 1 and move the seal body 1 on the shaft. In this way, the overall strength of the skeleton rubber seal can be enhanced.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A deformable and fitable skeleton rubber sealing ring, comprising a sealing ring body (1) and a support frame (8), wherein the sealing ring body (1) is internally connected to a support frame (2); Its features are: The inner side of the sealing ring body (1) is fixedly connected to a lip contact ring (10), one side of the lip contact ring (10) is connected to a sealing lip a (3), the other side of the lip contact ring (10) is provided with a sealing lip b (4), the lip contact ring (10) is provided with a groove (5) on the side near the sealing lip a (3), the outer side of the support frame (2) is provided with a limit anchoring mechanism, and one side of the sealing lip b (4) is fixed with multiple sets of protruding rings, and the cross section of the protruding rings is semi-circular; An auxiliary support mechanism is provided between the sealing ring body (1) and the lip contact ring (10).

2. The deformable, fitted skeleton rubber sealing ring according to claim 1, characterized in that: The lip contact ring (10) has an annular groove on the side near the sealing ring body (1), and an annular spring is sleeved inside the annular groove.

3. The deformable, fitted skeleton rubber sealing ring according to claim 1, characterized in that: One side of the support frame (2) is arc-shaped, and multiple sets of hollow grooves (7) are opened on the arc-shaped side of the support frame (2). The multiple sets of hollow grooves (7) are distributed at equal angles with respect to the central axis of the support frame (2).

4. The deformable, fitted skeleton rubber sealing ring according to claim 1, characterized in that: The sealing ring body (1) is made of fluororubber, and the lip contact ring (10) is made of nitrile rubber.

5. The deformable, fitted skeleton rubber sealing ring according to claim 1, characterized in that: The limiting anchoring mechanism includes anchoring grooves opened on the inner and outer sides of the support frame (2), and an anchoring ring (6) is connected to the inner side of the anchoring groove. The cross-section of the anchoring ring (6) and the anchoring groove is serrated. One side of the anchoring ring (6) is fixed to the inner side of the sealing ring body (1).

6. The deformable, fitted skeleton rubber sealing ring according to claim 1, characterized in that: The auxiliary support mechanism includes a placement groove opened on the inner side of the sealing ring body (1) and the lip contact ring (10), and a support frame (8) is connected to the inner side of the placement groove. The support frame (8) is M-shaped. A prying groove (9) is opened on one side of the sealing ring body (1), and the cross section of the prying groove (9) is V-shaped.

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