O-shaped sealing ring

Abstract

The utility model relates to an O-shaped sealing ring, and belongs to the technical field of sealing elements. The number of the first protruding rings is not less than two, and the first protruding rings are arranged on the inner side of the ring base body; the number of the second protruding rings is not less than one, and the second protruding rings are arranged on the outer side of the ring base body. The first protruding ring is in contact with the first ring surface, the second protruding ring is in contact with the second ring surface, in the extrusion process of the first component surface and the second component surface, the first protruding ring and the second protruding ring have deformation in the contact or extrusion process, and the deformation of the first protruding ring and the second protruding ring is compensated by elastic deformation. And sealing of the front end, the rear end, the inner side and the outer side of the ring base body in the four directions is achieved. The utility model provides an O-shaped sealing ring which has an excellent sealing effect in four directions.

Description

Technical Field

[0001] This application relates to the technical field of sealing components, and in particular to an O-ring seal. Background Technology

[0002] A sealing ring is an annular cover composed of one or more parts, fixed to one of the bearing's races or washers and contacting or forming a narrow labyrinth gap with the other race or washer to prevent lubricating oil leakage and foreign matter intrusion. In the sealed state, the sealing ring has contact surfaces in all four directions. The inner side of the sealing ring contacts the first annular surface, the outer side contacts the second annular surface, the front end of the sealing ring abuts against the first component surface, and the rear end abuts against the second component surface.

[0003] Existing technologies, such as the invention patent with patent number CN106763777A, provide an O-ring seal. This application includes an annular support skeleton and an adhesive cured on the support skeleton. The hardness of the O-ring seal is adjusted by the ratio of the support skeleton to the adhesive, or by the structure of the support skeleton alone. The support skeleton is a closed ring structure, which can significantly increase the tensile strength of the O-ring seal.

[0004] Regarding the aforementioned technologies, the inventors discovered that because the sealing ring is difficult to control the rate of volume change of the compression force during compression, it is difficult to maintain a seal in four directions simultaneously: the front end, the rear end, the inner side, and the outer side. Utility Model Content

[0005] In order to maintain a seal in four directions—front end, rear end, inner side, and outer side—this application provides an O-ring that has excellent sealing performance in all four directions.

[0006] In a first aspect, this application provides an O-ring seal, which adopts the following technical solution:

[0007] An O-ring seal, comprising:

[0008] Ring matrix;

[0009] The first protruding ring has not less than two and is disposed inside the ring base, and a first ring groove is provided between adjacent first protruding rings;

[0010] The second protruding ring is located on the outer side of the ring base;

[0011] One second protruding ring is provided;

[0012] Alternatively, multiple second protruding rings may be provided, and a second annular groove may be provided between adjacent second protruding rings.

[0013] By adopting the above technical solution, at least two first protruding rings are provided on the inner side of the ring base; a first annular groove is provided between adjacent first protruding rings; at least one second protruding ring is provided on the outer side of the ring base; and a second annular groove is provided between adjacent second protruding rings. The first and second annular grooves provide space for elastic deformation of the first and second protruding rings, which helps maintain a sealing state and provides a certain buffering capacity for the ring base. The first protruding ring contacts the first annular surface, and the second protruding ring contacts the second annular surface. During the compression process between the first and second component surfaces, the first and second protruding rings will have deformation during contact or compression. Their deformation is compensated by elastic deformation, achieving sealing in four directions: the front end, rear end, inner side, and outer side of the ring base.

[0014] Compared to traditional O-rings, which tend to subject the main body to significant compressive force during the sealing process, this application can greatly improve the sealing effect on the front and rear ends through the first and second annular grooves. In other words, sealing can be achieved without the ring base bearing significant pressure, thereby extending the service life of the O-ring.

[0015] In some applications with low sealing requirements and where only the first annular surface needs to be sealed, only the first annular groove is required. That is, only one second protruding ring is needed to achieve a sealing effect on the front and rear ends, and to achieve a seal without the ring base bearing a large pressure.

[0016] Optionally, both end faces of the front and rear ends of the ring base are formed into conical surfaces by the adjacent first and second protruding rings.

[0017] By adopting the above technical solution, the conical surface can have a certain deformation during the contact process, which is beneficial for fitting and contacting the irregular first or second component surface, thereby improving the sealing effect at both ends.

[0018] Optionally, the tapered surface includes:

[0019] Inner surface, facing the inner side of the ring matrix;

[0020] The outer surface faces the outside of the ring matrix, and the inner surface and the outer surface are symmetrically arranged.

[0021] By adopting the above technical solution, the inner and outer surfaces are symmetrically arranged, so that the inner and outer surfaces of the conical surface have the same deformation during the deformation process. This helps to maintain the state of the device in a sealed state and prevents slippage that could lead to seal failure.

[0022] Optionally, the two conical surfaces at the front and rear ends of the ring matrix are mirror images of each other.

[0023] By adopting the above technical solution, it is possible to achieve force balance on the two conical surfaces when compressed or impacted between the first component surface and the second component surface, thus preventing damage to the ring matrix caused by inconsistent force distribution throughout the ring matrix.

[0024] Optionally, the number of the second protruding rings is no more than the number of the first protruding rings.

[0025] By adopting the above technical solution, the first protruding ring is used to contact the first annular surface, and the second protruding ring is used to contact the second annular surface. By limiting the number of the second and first protruding rings, the contact area with the first annular surface is greater than the contact area with the second annular surface, thereby improving the material utilization rate while achieving the sealing effect of the O-ring seal.

[0026] Optionally, a support ring is provided within the ring matrix.

[0027] By adopting the above technical solution, the support ring is used to provide support for the ring matrix, that is, to prevent the ring matrix from undergoing plastic deformation after being subjected to large pressure or impact, thereby improving the service life and pressure bearing capacity of this application.

[0028] Optionally, the support ring extends toward the inner surface and is provided with a first support ring plate, and the support ring extends toward the outer surface and is provided with a second support ring plate.

[0029] By adopting the above technical solution, both the first support ring and the second support ring are beneficial to improving the impact and pressure resistance of this application, ensuring the maintenance of the state of the ring matrix and each first protruding ring and the second protruding ring, thereby improving the sealing effect of this application in four directions.

[0030] In summary, this application has at least the following beneficial effects:

[0031] 1. The first protruding ring is in contact with the first ring surface, and the second protruding ring is in contact with the second ring surface. During the process of compression between the first component surface and the second component surface, the first protruding ring and the second protruding ring will have deformation during the contact or compression process. Their own deformation is compensated by elastic deformation, so as to achieve sealing in four directions: front end, rear end, inner side and outer side of the ring base.

[0032] 2. The support ring is used to provide support for the ring base, that is, to prevent the ring base from plastic deformation after being subjected to large pressure or impact, and to ensure the state of the ring base and the first and second protruding rings is maintained through the first support ring plate and the second support plate, thereby improving the sealing effect of this application in four directions. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an O-ring seal.

[0034] Figure 2This is a schematic diagram of an embodiment of an O-ring in a sealed state;

[0035] Figure 3 A schematic cross-sectional view of an embodiment of an O-ring seal;

[0036] Figure 4 This is a schematic diagram of the overall structure of another embodiment of an O-ring seal;

[0037] Figure 5 This is a cross-sectional schematic diagram of another embodiment of an O-ring seal.

[0038] Explanation of reference numerals in the attached drawings: 1. Ring base; 2. First protruding ring; 21. First ring groove; 3. Second protruding ring; 31. Second ring groove; 4. Conical surface; 41. Inner surface; 42. Outer surface; 5. Support ring; 51. First support ring plate; 52. Second support ring plate; 6. First ring surface; 7. Second ring surface; 8. First component surface; 9. Second component surface. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices in the embodiments of this utility model. Figure 1 - Appendix Figure 5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] The first embodiment of this application discloses an O-ring. (See attached document.) Figure 1 To be continued Figure 3 .

[0041] See attached document Figure 1 and attached Figure 2 An O-ring seal includes a ring base 1, a first protruding ring 2, and a second protruding ring 3. Two first protruding rings 2 are provided on the inner side of the ring base 1, forming a first annular groove 21 between them. The first annular groove 21 provides space for the elastic deformation of the first protruding rings 2. A second protruding ring 3 is provided on the outer side of the ring base 1. During the compression process between the first component surface 8 and the second component surface 9, the first protruding rings 2 and 3 will deform during contact or compression. Their deformation is compensated by elastic deformation, achieving sealing in four directions: the front end, rear end, inner side, and outer side of the ring base 1. The sealing effect is achieved by the ring base 1 withstanding greater pressure through the first annular groove 21, thus improving the service life of this application.

[0042] See attached document Figure 1and attached Figure 3 The two end faces of the ring base 1 at both ends are formed into conical surfaces 4 by adjacent first protruding rings 2 and second protruding rings 3. The conical surfaces 4 include symmetrically arranged inner surfaces 41 and outer surfaces 42, and the two conical surfaces 4 at the front and rear ends of the ring base 1 are mirror images of each other. When compressed or impacted between the first component surface 8 and the second component surface 9, it can achieve close contact with the irregular first component surface 8 or the second component surface 9, improving the sealing effect at the two end faces, while also ensuring uniform force on the two opposite sides inside the ring base 1.

[0043] See attached document Figure 3 An O-ring seal also includes a support ring 5, which is disposed within the ring base 1 and provides support for the ring base 1. A first support ring plate 51 extends towards the inner surface 41 of the support ring 5, and a second support ring plate 52 extends towards the outer surface 42. The first and second support ring plates 51 and 52 are integrally formed with the support ring 5. The support ring 5 prevents the ring base 1 from undergoing plastic deformation under significant pressure or impact, thereby improving the service life and pressure resistance of this application. Both the first and second support ring plates 51 and 52 contribute to improving the impact and pressure resistance of this application, ensuring the maintenance of the state of the ring base 1 and each of the first protruding rings 2 and second protruding rings 3, thus improving the sealing effect of this application in four directions.

[0044] The second embodiment of this application discloses an O-ring. (See attached document.) Figure 4 and attached Figure 5 The difference from the above embodiment is that two second protruding rings 3 are provided on the outer side of the ring base 1, and a second annular groove 31 is provided between adjacent second protruding rings 3. The second annular groove 31 provides space for elastic deformation of the second protruding rings 3.

[0045] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. An O-ring, characterized in that, include: Ring matrix (1); The first protruding ring (2) has no less than two and is located inside the ring base (1), with a first ring groove (21) between adjacent first protruding rings (2). The second protruding ring (3) is located on the outside of the ring base (1); One second protruding ring (3) is provided; Alternatively, multiple second protruding rings (3) may be provided, and multiple second protruding rings (3) may have second annular grooves (31) between adjacent rings. The two end faces of the front and rear ends of the ring base (1) are both formed into a conical surface (4) by the adjacent first protruding ring (2) and second protruding ring (3). The conical surface (4) includes: The inner surface (41) faces the inside of the ring matrix (1); The outer surface (42) faces the outside of the ring base (1), and the inner surface (41) and the outer surface (42) are symmetrically arranged.

2. An O-ring according to claim 1, characterized in that, The two conical surfaces (4) at the front and rear ends of the ring substrate (1) are set as mirror images of each other.

3. An O-ring according to claim 1, characterized in that, The number of the second protruding rings (3) is no more than that of the first protruding rings (2).

4. An O-ring according to claim 2, characterized in that, The ring base (1) is provided with a support ring (5).

5. An O-ring according to claim 4, characterized in that, The support ring (5) extends toward the inner surface (41) and is provided with a first support ring plate (51).

6. An O-ring according to claim 5, characterized in that, The support ring (5) extends toward the outer surface (42) and is provided with a second support ring plate (52).

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