Double-sealing cylinder gasket

Abstract

A double-seal air cylinder gasket comprises a gasket body, an air cylinder opening is formed in the gasket body, the gasket body comprises an upper metal gasket body and a lower metal gasket body which are vertically riveted together, a circle of arc-shaped sealing rib protruding downwards is arranged on the upper metal gasket body, and the air cylinder opening is surrounded by the arc-shaped sealing rib. A circle of metal sealing strip is arranged on the lower metal gasket, and the metal sealing strip is right opposite to the outer side of the arc-shaped sealing rib. And two sealing structures are arranged, so that the sealing effect is greatly improved, and the overall performance of the automobile engine is ensured.

Description

Technical Field

[0001] The utility model relates to a cylinder gasket of an automobile engine, in particular to a double-sealed cylinder gasket. Background Art

[0002] Cylinder gaskets are critical seals between the cylinder head and cylinder block of an automotive engine. Their sealing performance directly impacts the overall performance of the engine. Unlike other sealing gaskets, cylinder gaskets have complex structures and come into contact with diverse media. They must not only withstand the preload forces between the cylinder head and cylinder block, as well as high temperatures and high pressures, but also ensure absolute static sealing in harsh operating environments.

[0003] The current cylinder gasket includes a gasket body, on which a cylinder port is provided. The gasket body includes an upper metal gasket and a lower metal gasket riveted together. The upper metal gasket is provided with a circle of downwardly protruding arc-shaped sealing ribs. When in use, the arc-shaped sealing ribs are squeezed and deformed with the lower metal gasket to fit tightly, thereby enclosing and sealing the cylinder port.

[0004] This type of cylinder gasket has only one sealing structure. During long-term use of the cylinder gasket, the sealing structure leaks, resulting in poor sealing effect and reduced overall performance of the automobile engine. Summary of the Invention

[0005] The utility model is to solve the above technical problems and provides a double-sealed cylinder gasket, which is provided with two sealing structures, greatly improving the sealing effect and ensuring the overall performance of the automobile engine.

[0006] The technical solution of this utility model is:

[0007] A double-seal cylinder gasket includes a gasket body with a cylinder port provided on the gasket body. The gasket body includes an upper metal gasket and a lower metal gasket riveted together. A circle of downwardly protruding arc-shaped sealing ribs is provided on the upper metal gasket, and the arc-shaped sealing ribs surround the cylinder port. The special feature of the gasket is that a circle of metal sealing strips is provided on the lower metal gasket, and the metal sealing strips are directly opposite to the outer side of the arc-shaped sealing ribs.

[0008] Furthermore, the cross section of the metal sealing strip is rectangular.

[0009] Furthermore, the cross-sectional width of the metal sealing strip is 10%-15% of the width of the arc-shaped sealing rib.

[0010] Furthermore, the cross-sectional height of the metal sealing strip is 8%-13% of the width of the arc-shaped sealing rib.

[0011] Furthermore, the metal sealing strip is fixed to the lower metal gasket by welding.

[0012] The beneficial effects of the utility model are:

[0013] The arc-shaped sealing rib on the upper metal gasket is squeezed and deformed with the lower metal gasket and fits tightly to form the first sealing structure; the outer side of the arc-shaped sealing rib on the upper metal gasket is deformed and fits tightly with the metal sealing strip on the lower metal gasket to form the second sealing structure. Through the two sealing structures, the seal between the cylinder head and cylinder block of the automobile engine cylinder is made tighter, which greatly improves the sealing effect and ensures the overall performance of the automobile engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 yes Figure 1 sectional view of

[0016] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0017] Figure 4 It is a diagram of the use state of the utility model;

[0018] In the figure: 1-cylinder port, 2-upper metal gasket, 3-lower metal gasket, 4-arc-shaped sealing rib, 5-metal sealing strip. DETAILED DESCRIPTION

[0019] like Figure 1-Figure 3 As shown, a double-seal cylinder gasket includes a gasket body, on which a cylinder port 1 is provided, the gasket body includes an upper metal gasket 2 and a lower metal gasket 3 riveted together, a circle of downwardly protruding arc-shaped sealing ribs 4 is provided on the upper metal gasket 2, and the arc-shaped sealing ribs 4 surround the cylinder port 1 therein, and a circle of metal sealing strips 5 are welded on the lower metal gasket 3, the metal sealing strips 5 are opposite to the outer side of the arc-shaped sealing ribs 4, the cross-section of the metal sealing strips 5 is rectangular, the cross-sectional width of the metal sealing strips 5 is 12% of the width of the arc-shaped sealing ribs 4, and the cross-sectional height of the metal sealing strips 5 is 10% of the width of the arc-shaped sealing ribs 4.

[0020] The working principle of this utility model is:

[0021] like Figure 4As shown, during the installation of the cylinder head of the automobile engine cylinder on the cylinder block, under the extrusion of the cylinder head and the cylinder block of the automobile engine cylinder, the arc-shaped sealing rib 4 on the upper metal gasket 2 is squeezed and deformed with the lower metal gasket 3 and fits tightly to form a first sealing structure; the outer side of the arc-shaped sealing rib 4 on the upper metal gasket 2 is deformed and fits tightly with the metal sealing strip 5 on the lower metal gasket 3 to form a second sealing structure. The two sealing structures make the seal between the cylinder head and the cylinder block of the automobile engine cylinder tighter.

[0022] The above are only specific embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A double-seal cylinder gasket, comprising a gasket body, a cylinder port being provided on the gasket body, the gasket body comprising an upper metal gasket and a lower metal gasket riveted together, the upper metal gasket being provided with a circle of downwardly protruding arcuate sealing ribs, the arcuate sealing ribs enclosing the cylinder port, and characterized in that: A circle of metal sealing strips is arranged on the lower metal gasket, and the metal sealing strips are directly opposite to the outer side of the arc-shaped sealing ribs.

2. The double-seal cylinder gasket according to claim 1, characterized in that: The cross section of the metal sealing strip is rectangular.

3. The double-seal cylinder gasket according to claim 1, characterized in that: The cross-sectional width of the metal sealing strip is 10%-15% of the width of the arc-shaped sealing rib.

4. The double-seal cylinder gasket according to claim 1, characterized in that: The height of the cross section of the metal sealing strip is 8%-13% of the width of the arc-shaped sealing rib.

5. The double-seal cylinder gasket according to claim 1, characterized in that: The metal sealing strip is welded and fixed to the lower metal gasket.

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