Integrated high-pressure-resistant reciprocating sealing body

Abstract

The utility model relates to the technical field of sealing rings, in particular to an integrated high-pressure-resistant reciprocating sealing body which comprises a rubber body, a first spring, a second spring and a framework. The rubber body extends towards the two sides of the axial direction to form a main sealing lip and a dustproof sealing lip, the rubber body is annular, and the main sealing lip and the dustproof sealing lip are arranged on the inner side face of the rubber body. The first spring is arranged around the main sealing lip, the second spring is arranged around the dustproof sealing lip, and the framework is arranged in the rubber body. The utility model discloses an integrated high-pressure-resistant reciprocating sealing body. The product strength is guaranteed while the installation coaxiality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to an integrated high-pressure resistant reciprocating sealing body. Background Art

[0002] At present, the sealing system of automobile shock absorbers is mainly based on oil seals. As the requirements for automobile shock absorbers become higher and higher, the pressure inside the shock absorber is also getting higher and higher. As the pressure increases, the impact pressure of the oil inside the shock absorber also increases, which puts higher requirements on the pressure-bearing capacity of the oil seal.

[0003] The oil seals of current high-pressure shock absorbers are all of combined design, as shown in the attached manual. Figure 1 As shown, a support ring 13 is added to the back side / air surface of the main sealing lip, thereby reducing the deformation of the main sealing lip under high pressure, controlling the contact width and radial force between the main sealing lip and the rod, ensuring the contact condition between the main sealing lip and the rod under high pressure, avoiding excessive wear of the main sealing lip, that is, ensuring the sealing state of the main sealing lip, and improving the pressure resistance of the main sealing lip, thereby adapting to higher pressure requirements, ensuring the sealing effect, and increasing the service life.

[0004] The above-mentioned combined high-pressure shock absorber oil seals are respectively manufactured by vulcanization process, which increases the complexity of the manufacturing process and reduces production efficiency. At the same time, due to the use of combined process, higher requirements are placed on the matching tolerance of the two assembled components. Once there is a deviation in the coaxiality of the two assembled components, it will affect the product's anti-eccentricity ability. Utility Model Content

[0005] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides an integrated high-pressure resistant reciprocating seal to improve production efficiency and ensure the product's anti-eccentricity capability.

[0006] Technical solution: To achieve the above-mentioned purpose, the utility model discloses an integrated high-pressure resistant reciprocating seal body, comprising an integrally formed rubber body, wherein the rubber body extends toward both sides of the axial direction to form a main sealing lip and a dustproof sealing lip, wherein the rubber body is annular, and the main sealing lip and the dustproof sealing lip are arranged on the inner side of the rubber body;

[0007] a first spring, the first spring being arranged around the main sealing lip;

[0008] a second spring, the second spring being arranged around the dustproof sealing lip;

[0009] A skeleton is built into the rubber body.

[0010] Preferably, the skeleton includes a first skeleton and a second skeleton, the first skeleton is provided with a first section extending along the axial direction, the first section is arranged close to the inner side surface of the rubber body, the second skeleton is stacked up and down, one side surface of the second skeleton is fitted with the bottom surface of the first section, and the other side surface of the second skeleton is fitted with the outer side surface of the first section; the second skeleton is arranged between the main sealing lip and the dustproof sealing lip.

[0011] Preferably, the rubber body comprises an outer ring portion and an inner ring portion, and the first sub-portion and the second skeleton are arranged in the inner ring portion.

[0012] Preferably, the first skeleton further includes a second section arranged on the outer ring portion and a third section for connecting the first section.

[0013] Preferably, the longitudinal section of the second skeleton is L-shaped.

[0014] Preferably, the skeleton is made of DC01 material.

[0015] The utility model has the following technical effects:

[0016] (1) The sealing body has an integrated structure, wherein the first frame and the second frame can be formed at one time through a vulcanization process, thereby simplifying the vulcanization process and improving production efficiency; at the same time, the coaxiality of the sealing body mounting hole can be ensured, thereby ensuring the product's anti-eccentricity capability.

[0017] (2) The first and second frames are made of DC01 material instead of the common PTFE and POM materials, which improves the sealing ability of the lip, avoids deformation under high pressure, and ensures sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an existing sealing body;

[0019] Figure 2 It is a schematic structural diagram of the sealing body disclosed in the utility model.

[0020] In the figure, 1. rubber body; 2. main sealing lip; 3. dustproof sealing lip; 4. first spring; 5. second spring; 6. first skeleton; 7. second skeleton; 8. first division; 9. outer ring; 10. inner ring; 11. second division; 12. third division; 13. support ring. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 To Attachment Figure 2 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0022] An integrated high-pressure resistant reciprocating seal body comprises a rubber body 1, a first spring 4, a second spring 5 and a skeleton. The skeleton comprises a first skeleton 6 and a second skeleton 7.

[0023] The rubber body 1 is integrally formed. Figure 2 , define the X direction as the axial direction of the sealing body. The rubber body 1 extends to both sides of the axial direction to form the main sealing lip 2 and the dustproof sealing lip 3. When installing the sealing body, the dustproof sealing lip 3 should be facing the external environment, and the main sealing lip 2 should be facing the chamber to be sealed. The rubber body 1 is annular, and the main sealing lip 2 and the dustproof sealing lip 3 are both arranged on the inner side of the rubber body 1 and fit with the sealing shaft. The first spring 4 and the second spring 5 are arranged on the outer side of the rubber body 1, wherein the first spring 4 is arranged around the main sealing lip 2, and the second spring 5 is arranged around the dustproof sealing lip 3. The first spring 4 and the second spring 5 provide radial force for the rubber body 1 to ensure that the main sealing lip 2 and the dustproof sealing lip 3 are always clamped on the shaft.

[0024] The skeleton is built into the rubber body 1 and is integrally formed with the rubber body 1 through a vulcanization process. In order to ensure the strength of the skeleton, the first skeleton 6 and the second skeleton 7 in this solution are made of DC01 material, that is, cold-rolled steel plate. DC01 is stronger than common PTFE and POM.

[0025] The rubber body 1 includes an outer ring portion 9 and an inner ring portion 10, and the outer ring portion 9 is arranged around the inner ring portion 10. The first skeleton 6 includes an integrated first sub-section 8, a second sub-section 11 and a third sub-section 12. The first sub-section 8 is arranged in the inner ring portion 10 and extends in the axial direction. The first sub-section 8 is arranged close to the inner side surface of the rubber body 1; the second sub-section 11 is arranged in the outer ring portion 9, and the third sub-section 12 is used to connect the first sub-section 8 and the second sub-section 11 together. From the longitudinal section of the first skeleton 6, the first sub-section 8, the second sub-section 11 and the third sub-section 12 form an approximate U shape. The second skeleton 7 is stacked up and down with the first skeleton 6 and is arranged between the main sealing lip 2 and the dustproof sealing lip 3 and is arranged in the inner ring portion 9 of the rubber body 1. The longitudinal section of the second skeleton 7 is L-shaped, one side surface of the second skeleton 7 is in contact with the bottom surface of the first sub-section 8, and the other side surface of the second skeleton 7 is in contact with the outer side surface of the first sub-section 8.

[0026] The rubber body 1 in the device is integrally vulcanized with the frame, which ensures the coaxiality of the mounting hole and improves the strength of the rubber body 1.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated high-pressure resistant reciprocating seal, characterized in that: include An integrally formed rubber body (1), the rubber body (1) extending towards both sides of the axial direction to form a main sealing lip (2) and a dustproof sealing lip (3), the rubber body (1) is annular, and the main sealing lip (2) and the dustproof sealing lip (3) are arranged on the inner side surface of the rubber body (1); A first spring (4), the first spring (4) being arranged around the main sealing lip (2); A second spring (5), the second spring (5) being arranged around the dustproof sealing lip (3); A skeleton is built into the rubber body (1).

2. The integrated high pressure resistant reciprocating seal according to claim 1, characterized in that: The skeleton comprises a first skeleton (6) and a second skeleton (7); the first skeleton (6) is provided with a first section (8) extending in the axial direction; the first section (8) is arranged close to the inner side surface of the rubber body (1); the second skeleton (7) is stacked up and down; one side surface of the second skeleton (7) is in contact with the bottom surface of the first section (8); the other side surface of the second skeleton (7) is in contact with the outer side surface of the first section (8); the second skeleton (7) is arranged between the main sealing lip (2) and the dustproof sealing lip (3).

3. The integrated high pressure resistant reciprocating seal according to claim 2, characterized in that: The rubber body (1) comprises an outer ring portion (9) and an inner ring portion (10), and the first sub-portion (8) and the second skeleton (7) are arranged on the inner ring portion (10).

4. The integrated high pressure resistant reciprocating seal according to claim 3, characterized in that: The first skeleton (6) further comprises a second section (11) arranged on the outer ring section (9) and a third section (12) used for connecting the first section (8).

5. The integrated high pressure resistant reciprocating seal according to claim 2, characterized in that: The longitudinal section of the second frame (7) is L-shaped.

6. The integrated high pressure resistant reciprocating seal according to claim 1, characterized in that: The skeleton is made of DC01 material.

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