Elastomer composite sealing element

Abstract

The utility model discloses an elastic body composite sealing element which is characterized by comprising a supporting framework, a first elastic body is fixed on the supporting framework, and a second elastic body is arranged on the lower surface of the supporting framework. The sealing rib is arranged on the first elastic body so as to be matched with an external shell for sealing; the sealing gasket is well supported by embedding the supporting framework, the automatic assembly effect of the sealing gasket can be met, the first elastic body and the second elastic body are arranged on the upper side and the lower side and provided with the gradually-changed sealing ribs, the deformation of the upper shell and the deformation of the lower shell can be compensated, and the good sealing effect is achieved. In addition, the sealing device can be repeatedly disassembled, assembled and used, and the sealing effect is well guaranteed.

Description

Technical Field

[0001] The utility model specifically relates to an elastomer composite seal. Background Technique

[0002] All kinds of mechanical, electronic and electrical equipment require a sealed environment, which is mainly achieved by seals or sealants between the shells or between the shell and the end face. For example, the seal between the shells of an automotive air-conditioning compressor is used to ensure that the media inside and outside the compressor do not mix with each other and keep the system running normally; the use of a driving motor seal ring is to prevent the leakage of lubricating oil or coolant, and the use of seals for the water field and gas field of a hydrogen fuel cell, etc.

[0003] The cross-sections of traditional rubber seals are circular, rectangular, diamond-shaped or other special-shaped rubber products. Their use requires the processing of high-precision grooves on the end face or the shell to facilitate the installation of the seal. Generally, for larger-sized shells, the seals are also larger and require manual installation, with low efficiency, large deformation, and it is also easy for the seal to fail due to improper installation of the seal in the later stage. To ensure the sealing requirements, the sealing surface often requires a larger width to facilitate groove processing and seal installation; if dispensing glue through mechanical equipment, although the grooves can be eliminated to a certain extent and automation is easy to achieve, due to the difficulty in precisely controlling the thickness of the sealant on the sealing surface and the insufficient resistance to media and weather of the sealant itself, the sealing performance is poor and the long-term sealing reliability is insufficient. Therefore, we propose an elastomer composite seal. Content of the Utility Model

[0004] The purpose of the utility model is to provide an elastomer composite seal to solve the problems of pure elastomer seals in the above-mentioned background technique, such as large size, large deformation, low efficiency of manual installation, poor sealing stability in the later stage, adding dispensing glue for sealing, difficult thickness control, poor chemical stability, and inability to ensure good long-term sealing.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An elastomer composite seal, characterized in that it includes:

[0006] A support skeleton, on which a first elastomer is fixed, and a second elastomer is arranged on the lower surface of the support skeleton;

[0007] Sealing ribs, arranged on the first elastomer to cooperate with the external shell for sealing;

[0008] Wherein, bolt holes are evenly distributed on the inner edge of the support skeleton, and the bolt holes penetrate through the first elastomer and the second elastomer.

[0009] Preferably, the cross-section of the sealing rib is one or more of circular, rounded rectangular, triangular, M-shaped single peak, and M-shaped double peak.

[0010] The elastic seal composite seal formed by the first elastomer, the second elastomer and the support skeleton has a circular, square or special-shaped contour, or a combination of one or more of them.

[0011] Preferably, the cross-section of the sealing rib is triangular, and the included angle between two adjacent sides of the sealing rib away from the first elastomer is 70° to 130°.

[0012] Preferably, the sealing rib is an annular rib or a mesh rib.

[0013] Preferably, a plurality of bolt holes are provided, and the height of the sealing rib gradually increases from both ends to the middle along the connecting line of every two bolt holes.

[0014] Preferably, the second elastomer has the same shape and size as the first elastomer, and both the first elastomer and the second elastomer are adhesively fixed to the support skeleton.

[0015] Preferably, the material of the support skeleton is metal or plastic.

[0016] Preferably, the thickness of the support skeleton is 0.2 - 1.0 mm.

[0017] Preferably, the materials of the first elastomer and the second elastomer are silicone rubber.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] In the present utility model, by embedding a support skeleton, a good support effect is provided for the gasket, which can meet the automatic assembly effect of the gasket. The first elastomer and the second elastomer are used on the upper and lower sides, and both have gradually changing sealing ribs, which can compensate for the deformation of the upper and lower shells and achieve a good sealing effect. In addition, it can be disassembled and assembled repeatedly and reused, which well ensures the sealing effect. When necessary, it can also conduct electricity. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic cross-sectional view of the first elastomer of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the annular rib of the present utility model;

[0023] Figure 4 is a schematic structural diagram of the mesh rib of the present utility model;

[0024] Figure 5 is a schematic cross-sectional view of the circular sealing rib of the present utility model;

[0025] Figure 6 Schematic cross-sectional view of the rounded rectangular sealing rib of the present utility model;

[0026] Figure 7 Schematic cross-sectional view of the M-shaped single-peak circular sealing rib of the present utility model;

[0027] Figure 8 Schematic cross-sectional view of the M-shaped double-peak circular sealing rib of the present utility model;

[0028] Figure 9 Schematic view of the multi-bolt hole structure of the present utility model;

[0029] Figure 10 Schematic view of the square seal structure of the present utility model;

[0030] Figure 11 Schematic view of the special-shaped seal structure of the present utility model.

[0031] In the figure: 1, support skeleton; 2, first elastomer; 3, second elastomer; 4, annular rib; 6, mesh rib; 7, bolt hole. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to Figures 1 - 11 , the present utility model provides a technical solution: an elastomer composite seal, comprising:

[0034] A support skeleton 1, on which a first elastomer 2 is fixed, and a second elastomer 3 is arranged on the lower surface of the support skeleton 1. The structure of rubber and an embedded skeleton is adopted, and the embedded support skeleton 1 plays a good supporting role for sealing, which can meet the effect of automatic assembly of the gasket;

[0035] During production, the upper and lower surfaces of the support skeleton 1 are printed with adhesive rubber and then vulcanized integrally with the support skeleton 1, which ensures the bonding effect between the rubber and the skeleton, improves production efficiency and saves production costs;

[0036] Sealing ribs, arranged on the first elastomer 2 to cooperate with the external housing for sealing, which is convenient to improve the sealing effect. Preferably, a metal contact with a diameter smaller than the sealing width is added at the middle position of the sealing rib to make the upper and lower housings to be sealed conductive, which can not only ensure sealing but also make it conductive;

[0037] Among them, bolt holes 7 are evenly distributed on the inner edge of the support skeleton 1, which can be quickly pre-positioned during installation. Whether it is manual assembly or machine automation assembly, the assembly efficiency of the seal is greatly improved, and the bolt holes 7 penetrate through the first elastic body 2 and the second elastic body 3.

[0038] In this embodiment, preferably, the cross-section of the sealing rib is one or more of a circle, a rounded rectangle, a triangle, an M-shaped single peak, and an M-shaped double peak, which is convenient for a better sealing effect.

[0039] In this embodiment, preferably, the contour of the elastic seal composite seal formed by the first elastic body 2, the second elastic body 3, and the support skeleton 1 is one or more of a circle, a square, and a special shape, which is convenient for being applied to different positions for sealing.

[0040] In this embodiment, preferably, the cross-section of the sealing rib is triangular, and the included angle between two adjacent sides of the sealing rib away from the first elastic body 2 is 70° to 130°. The angle of each sealing rib is designed to ensure the stability and sealing stress of the sealing rib itself after being compressed.

[0041] In this embodiment, preferably, the sealing rib is an annular rib 4 or a mesh rib 6 to ensure multi-channel sealing. Assuming that there are local defects in individual sealing ribs, leakage will not occur, improving the product qualification rate and sealing success rate.

[0042] In this embodiment, preferably, a plurality of bolt holes 7 are provided, and the height of the sealing rib gradually increases from both ends of the connecting line of every two bolt holes 7 to the middle in a gradient manner. The sealing ribs with a gradient of liquid silicone rubber are used on the upper and lower sides, which can compensate for the deformation of the upper and lower shells and achieve a good sealing effect.

[0043] In this embodiment, preferably, the second elastic body 3 has the same shape and size as the first elastic body 2, which is convenient for forming symmetry along the center line of the support skeleton 1, so that the upper and lower shells to be sealed can achieve a good sealing effect. The first elastic body 2 and the second elastic body 3 are both adhesively fixed to the support skeleton 1, which is convenient for a better connection effect.

[0044] In this embodiment, preferably, the material of the support skeleton 1 is metal or plastic. The material of the support skeleton 1 is not limited to the above two, and other high-strength materials such as PVC can also be used. The materials of the first elastic body 2 and the second elastic body 3 are both silicone rubber. Silicone rubber has the advantages of high temperature resistance, high strength, and low compression set, greatly improving the sealing effect and service life.

[0045] Preferably, the thickness of the support skeleton 1 is 0.2 - 1.0 mm, which is convenient for a better deformation effect, thereby improving the sealing performance.

[0046] This patent adopts a structure of an elastomeric seal and an embedded support skeleton, which can be an embedded metal skeleton or a plastic skeleton, and can provide good support for the gasket to meet the requirements of automatic assembly of the gasket. The upper and lower sides adopt a gradually changing seal rib made of liquid silicone elastomer, which can compensate for the deformation of the upper and lower shells and achieve a good sealing effect. The seal proposed in this patent is formed by vulcanizing the elastomer printed on the upper and lower surfaces of the support skeleton integrally with the support skeleton. For a specific metal skeleton, a steel plate can be selected. The whole roll of the steel plate passes through an adhesive, which not only saves the complex process of accurately coating the adhesive locally on the skeleton during production, but also ensures the bonding effect between the elastomer and the skeleton, improving production efficiency and saving production costs; the seal adopts a symmetric way of multiple gradually changing triangular cross-section elastomeric seal ribs on the upper and lower surfaces, which can achieve a good sealing effect on the upper and lower sealed shells, and has lower requirements for the flatness, dimensional tolerance and installation and assembly of the upper and lower sealed shells, and can achieve a good sealing effect; the seal is designed with multiple elastomeric annular ribs 4 or mesh seal ribs 6 on the upper and lower surfaces of the skeleton to ensure multi-channel sealing. If there are local defects in individual seal ribs, leakage will not occur, improving the product qualification rate and sealing success rate; the seal is designed with several positioning bolt holes 7 on the outer side around it, which can be quickly pre-positioned during the installation process. Whether it is manual assembly or machine automatic assembly, the assembly efficiency of the seal is greatly improved; the seal can be disassembled and reused repeatedly. This patent can produce seals of different shapes to meet the use requirements of different positions. Please refer to Figures 5 - 11 the made sealing ring as shown, which can well save costs, reduce resource consumption and the impact of waste on the environment, improve economic benefits, and enhance the core competitiveness of the product.

[0047] The raw rubber matrix of the first elastomer and the second elastomer selects a new type of liquid silicone elastomer and a special adhesive, so the vulcanized rubber has excellent heat aging resistance and small compression set, making the gasket have the advantage of low compression set; liquid silicone rubber can improve the high-temperature and low-temperature performance of the gasket, and at the same time improve the resilience of the gasket, further enhancing the sealing performance. It effectively solves the sealing problem of the gasket. The elastomeric adhesive effectively improves the bonding property, wear resistance and mechanical properties between the gasket matrix and the skeleton, and prolongs its service life. During the actual production process, the liquid silicone elastomer is injected into the screen printing equipment through a liquid silicone rubber mixing machine, and the liquid silicone elastomer is screen printed on the upper and lower surfaces of the support skeleton 1 through the set speed and pressure of screen printing. Then, the support skeleton 1 with the liquid silicone elastomer printed on the upper and lower surfaces is put into a vacuum vulcanizing press for vulcanization molding, and then punched by a special stamping die.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elastomeric composite seal, characterized in that, Comprising: A support skeleton (1), on which a first elastomer (2) is fixed, and a second elastomer (3) is arranged on the lower surface of the support skeleton (1); A sealing rib, arranged on the first elastomer (2) to cooperate with an external housing for sealing; Wherein, bolt holes (7) are evenly distributed on the inner edge of the support skeleton (1), and the bolt holes (7) penetrate through the first elastomer (2) and the second elastomer (3).

2. The elastomeric composite seal according to claim 1, wherein: The cross-section of the sealing rib is one or more of a circle, a rounded rectangle, a triangle, an M-shaped single peak, and an M-shaped double peak.

3. An elastomeric composite seal according to claim 1, characterized in that: The elastic sealing body composite seal formed by the first elastomer (2), the second elastomer (3), and the support skeleton (1) has a contour that is one or more of a circle, a square, and a special shape.

4. An elastomeric composite seal according to claim 2, wherein: The cross-section of the sealing rib is triangular, and the included angle between two adjacent sides of the sealing rib away from the first elastomer (2) is 70° to 130°.

5. An elastomeric composite seal according to claim 1, characterized in that: The sealing rib is an annular rib (4) or a mesh rib (6).

6. The elastomeric composite seal according to claim 1, wherein: A plurality of bolt holes (7) are provided, and the height of the sealing rib gradually increases from both ends of the connection line of every two bolt holes (7) to the middle.

7. An elastomeric composite seal according to claim 1, wherein: The second elastomer (3) has the same shape and size as the first elastomer (2), and both the first elastomer (2) and the second elastomer (3) are adhesively fixed to the support skeleton (1).

8. An elastomeric composite seal according to claim 1, characterized in that: The material of the support skeleton (1) is metal or plastic.

9. An elastomeric composite seal according to claim 1, characterized in that: The thickness of the support skeleton (1) is 0.2 - 1.0 mm.

10. The elastomeric composite seal according to claim 1, wherein: The materials of the first elastomer (2) and the second elastomer (3) are silicone rubber.

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