Sealing rubber part

Abstract

The utility model discloses a sealing rubber part which comprises a rubber main body, and the rubber main body is composed of an upper part and a lower part which are integrally formed up and down. The outer contour of the section of the lower portion of the rubber body is rectangular, and the lower portion is provided with a first cavity formed in the width direction of the rubber body. And the outer contour of the section of the upper part of the rubber main body is triangular. The lower portion of the sealing rubber part is used for being embedded in the installation groove, and the upper portion of the sealing rubber part is used for making contact with related components of the watertight door to form sealing. The rubber section is improved by adopting a specific shape design and a cavity design, and the compression force of the rubber is effectively reduced under the condition of ensuring good sealing, so that the sealing rubber part is well applied to related marine equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber sealing parts, in particular to a sealing rubber part. Background Art

[0002] Rubber has many advantages such as long service life, resistance to seawater, salt spray and sunlight, and is widely used in various marine equipment. Rubber parts are especially used in sealing scenarios of marine equipment, especially watertight doors, ship windows, stern doors, etc., which are used in scenarios where they are frequently opened and closed.

[0003] A Chinese invention patent with announcement number CN102927275A discloses a rubber sealing strip for a marine watertight door, comprising a sponge body located inside the sealing strip body, a glue layer arranged outside the sponge body, and a rubber skin arranged outside the glue layer. The invention has good sealing performance, is not easy to leak, has low cost and long service life.

[0004] The applicant has found through research that the existing technology mostly uses solid dense rubber parts, which have the following disadvantages: the compression force required for dense rubber parts is relatively large, which has a certain negative impact on the design and use of marine watertight doors. Because during the rubber compression process, the strain energy of the elastic body is transmitted from the contact surface to the load-bearing components of the door body. The higher the compression force, the higher the requirements for the relevant structures of the watertight door; otherwise, the sealing performance failure problem is likely to occur during long-term use.

[0005] However, in the current application of marine engineering equipment, there are few rubber component structural designs that use compression force as the optimization target, and targeted innovative improvements are needed. Utility Model Content

[0006] In order to overcome the above technical defects, the utility model provides a sealing rubber part.

[0007] In order to solve the above problems, the utility model is implemented according to the following technical solutions:

[0008] The sealing rubber part of the utility model comprises a rubber body, wherein the rubber body is composed of an upper part and a lower part which are integrally formed from top to bottom;

[0009] The cross-sectional outer contour of the lower portion of the rubber body is rectangular, and the lower portion has a first cavity arranged along the width direction of the rubber body.

[0010] The cross-sectional outer contour of the upper portion of the rubber body is triangular.

[0011] Preferably, the upper part has a second cavity, the cross-sectional outer contour of the second cavity is triangular, and the second cavity is arranged at the top of the upper part.

[0012] Preferably, the first cavity has an outer contour of an inverted isosceles trapezoid in cross section, and the upper cavity wall of the first cavity is provided with two symmetrically distributed downwardly convex first arcuate surfaces, and the lower cavity wall of the first cavity is provided with a second arcuate surface convex upward;

[0013] The surface area of ​​the second arcuate surface is set larger than the surface area of ​​the first arcuate surface.

[0014] Preferably, chamfered structures are provided on both sides of the bottom of the lower part of the rubber body, and the length of the chamfered structures is matched with the length of the rubber body.

[0015] Preferably, the rubber body is provided with two symmetrically distributed third cavities between the upper part and the lower part, the cross-sectional outer contour of the third cavity is square, and the four corners of the third cavity are all rounded.

[0016] Preferably, the outer side wall of the rubber body is provided with two symmetrically distributed groove structures, and the groove structures are provided at a position between the upper part and the lower part of the rubber body.

[0017] Preferably, the rubber body is made of hydrogenated nitrile rubber.

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

[0019] The utility model provides a sealing rubber part, comprising a rubber body, wherein the rubber body is composed of an upper part and a lower part which are integrally formed from top to bottom; the cross-sectional outer contour of the lower part of the rubber body is rectangular, and the lower part has a first cavity arranged along the width direction of the rubber body; the cross-sectional outer contour of the upper part of the rubber body is triangular.

[0020] The lower part of the sealing rubber member of the utility model is used to be embedded in the installation groove, and the upper part of the sealing rubber member is used to contact the relevant components of the watertight door to form a seal. By adopting a specific shape design + cavity design, the rubber cross section is improved, and the compression force of the rubber is effectively reduced under the condition of ensuring good sealing, so that the sealing rubber member is well used in marine related equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a structural schematic diagram of a sealing rubber component of the utility model;

[0023] Figure 2 It is a first cross-sectional schematic diagram of a sealing rubber member of the utility model;

[0024] Figure 3 It is a second cross-sectional schematic diagram of a sealing rubber member of the utility model;

[0025] Figure 4 This is a schematic diagram of a second implementation structure of a sealing rubber member of the utility model;

[0026] In the figure:

[0027] 10-upper part, 11-second cavity;

[0028] 20-lower part, 21-first cavity;

[0029] 30- The third cavity. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] like Figure 1 to Figure 3 As shown, a preferred structure of a sealing rubber member described in the utility model.

[0032] like Figure 1 and Figure 2 As shown, the sealing rubber part of the utility model comprises a rubber body. The rubber body is composed of an upper part and a lower part which are integrally formed from top to bottom; the cross-sectional outer contour of the lower part of the rubber body is rectangular, and the lower part 20 has a first cavity 21 arranged along the width direction of the rubber body. The cross-sectional outer contour of the upper part of the rubber body is triangular.

[0033] The lower part of the sealing rubber member of the utility model is used to be embedded in the installation groove, and the upper part of the sealing rubber member is used to contact the relevant components of the watertight door to form a seal. By adopting a specific shape design + cavity design, the rubber cross section is improved, and the compression force of the rubber is effectively reduced under the condition of ensuring good sealing, so that the sealing rubber member is well used in marine related equipment.

[0034] In a preferred embodiment, the upper portion 10 has a second cavity 11 , the cross-sectional outer contour of the second cavity is triangular, and the second cavity is arranged at the top of the upper portion.

[0035] Among them, the first cavity has an inverted isosceles trapezoidal cross-sectional outer contour, and two symmetrically distributed downwardly convex first arcuate surfaces are arranged on the upper cavity wall of the first cavity, and a second arcuate surface convex upward is arranged on the lower cavity wall of the first cavity; the surface area of ​​the second arcuate surface is larger than the surface area of ​​the first arcuate surface.

[0036] Furthermore, the rubber body is provided with two symmetrically distributed third cavities 30 between the upper part and the lower part. The cross-sectional outer contour of the third cavity is square, and the four corners of the third cavity are all rounded.

[0037] In the rubber seal with optimized structure, all cavities participate in deformation during compression. The strain at the top of the second cavity is 0.9 to 1.0, the strain between the second cavity and the third cavity is about 0.5, and the strain at the top of the first cavity is about 0.25. The bottom of the second cavity is ︵-shaped, which improves the compression resistance of the second cavity; the shape of the third cavity reduces the rigidity of the rubber part, thereby increasing the deformation of the two third cavities, and the strain can be better transmitted to the first cavity; the main function of the first cavity is to reduce weight, and the size of the first cavity with optimized structure is large, which is the main optimized area for volume reduction.

[0038] like Figure 2 As shown, the utility model provides a sealing rubber part of specific size. Through the above-mentioned specific structural design, this technology optimizes the structure of rubber with the optimization goal of reducing the compression force of rubber parts. After the structural optimization, the rubber compression force of the sealing rubber parts is reduced by 20%, the Mises stress is reduced by 46% (Mises stress will cause relaxation and aging of rubber materials, resulting in a decrease in stiffness and elasticity, and then cause crack defects), and the weight is reduced by about 20%. Under the premise of not affecting the sealing performance, the manufacturing materials and costs of rubber parts are effectively reduced. The produced sealing rubber parts have been well applied in marine engineering. While ensuring the sealing performance of watertight doors, they can also assist in guiding the design and optimization of related mechanical structures.

[0039] It should be noted that the present invention does not limit the specific size design of the sealing rubber component, and those skilled in the art can design it according to actual needs.

[0040] like Figure 2 As shown, both sides of the bottom of the lower part of the rubber body are provided with chamfered structures, and the length of the chamfered structures matches the length of the rubber body. The chamfered structure design makes it easier to embed the rubber body into the installation position.

[0041] like Figure 2 As shown, the outer side wall of the rubber body is provided with two symmetrically distributed groove structures, and the groove structures are provided at a position between the upper part and the lower part of the rubber body.

[0042] In a specific implementation, the rubber body is made of hydrogenated nitrile rubber. Hydrogenated nitrile rubber has good oil resistance, heat resistance, chemical corrosion resistance, ozone resistance, and compression permanent deformation resistance. At the same time, hydrogenated nitrile rubber also has the characteristics of high strength, high tearing performance, excellent wear resistance, etc.

[0043] like Figure 4 The above is another implementation structure of a sealing rubber member of the utility model.

[0044] For other structures of the sealing rubber member described in this embodiment, refer to the prior art.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sealing rubber part, characterized in that: The rubber body comprises an upper part and a lower part which are integrally formed from top to bottom; The cross-sectional outer contour of the lower part of the rubber body is rectangular, and the lower part has a first cavity arranged along the width direction of the rubber body; The cross-sectional outer contour of the upper portion of the rubber body is triangular.

2. A sealing rubber member according to claim 1, characterized in that: The upper part has a second cavity, the cross-sectional outer contour of the second cavity is triangular, and the second cavity is arranged on the top of the upper part.

3. A sealing rubber member according to claim 1, characterized in that: The first cavity has an outer contour of an inverted isosceles trapezoid in cross section, and the upper cavity wall of the first cavity is provided with two symmetrically distributed first arc-shaped surfaces convex downward, and the lower cavity wall of the first cavity is provided with a second arc-shaped surface convex upward; The surface area of ​​the second arcuate surface is set larger than the surface area of ​​the first arcuate surface.

4. A sealing rubber member according to claim 1, characterized in that: Chamfered structures are provided on both sides of the bottom of the lower part of the rubber body, and the length of the chamfered structures is adapted to the length of the rubber body.

5. A sealing rubber component according to any one of claims 1 to 4, characterized in that: The rubber body is provided with two symmetrically distributed third cavities between the upper part and the lower part. The cross-sectional outer contour of the third cavity is square, and the four corners of the third cavity are all rounded.

6. A sealing rubber member according to any one of claims 1 to 4, characterized in that: The outer side wall of the rubber body is provided with two symmetrically distributed cutting groove structures, and the cutting groove structures are arranged at a position between the upper part and the lower part of the rubber body.

7. A sealing rubber member according to any one of claims 1 to 4, characterized in that: The rubber body is made of hydrogenated nitrile rubber.

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