JP4361988B2 - Metal gasket for multiple proximity holes - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal gasket attached to a sealing surface of a part having a plurality of adjacent holes.
[0002]
[Prior art]
In recent years, with the demand for miniaturization and high performance of automobile engines, a plurality of holes provided in parts such as engines have come close to each other. Therefore, the hole interval of the sealing surface of the component is narrow, and in the conventional metal gasket, only one emboss (bead) for sealing (sealing) may pass between the holes.
[0003]
For example, as shown in FIG. 5, in the conventional metal gasket for a plurality of proximity holes 1a, a first annular emboss 111 is provided in the hole 11 that is mainly sealed or has a higher pressure, and another hole is provided. 12 was provided with a second annular emboss 121 that encloses both holes 11 and 12.
[0004]
However, in such a conventional metal gasket for a plurality of proximity holes, the flat region portion 13 not related to sealing obstructs the compressive deformation of the first and second annular embosses 111 and 121, and the embossing 111 and 121 are effective. The sealing function could not be demonstrated.
[0005]
[Problems to be solved by the invention]
Therefore, the problem to be solved by the present invention is to ensure uniform compression of seal beads (seal embossing) in a metal gasket having a plurality of proximity holes.
[0006]
[Means for Solving the Problems]
The metal gasket for a plurality of proximity holes according to the present invention is attached to a sealing surface of a component having a plurality of adjacent holes. The metal gasket for a plurality of proximity holes includes a first annular emboss surrounding at least one predetermined hole of the plurality of adjacent holes, and a second surrounding the plurality of proximity holes including the first annular emboss. An annular emboss is provided. In this metal gasket, a flat uncompressed deformation region formed between a plurality of adjacent holes and between adjacent holes surrounded only by the first annular emboss, the second annular emboss, and the second annular emboss. Part is removed.
[0007]
A part of the flat region is removed by opening an auxiliary hole. There may be a plurality of auxiliary holes in the flat region.
[0008]
According to the present invention, by removing a part of the flat region that hinders the compression of the annular embossing, the annular embossing can be easily compressed and deformed, and a predetermined surface pressure is generated along the seal line by the annular embossing. To do.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a metal gasket for a plurality of proximity holes according to the present invention will be described with reference to FIGS.
[0010]
The metal gasket 1 for a plurality of proximity holes according to the present invention is attached to a sealing surface of a component (for example, an automobile engine or the like) having a plurality of adjacent holes. The metal gasket 1 includes a first annular emboss 111 that surrounds at least one predetermined hole 11 of the plurality of adjacent holes 11 and 12, and a plurality of adjacent holes 11 and 12 including the first annular emboss 111. And a second annular emboss 121 that surrounds. In this metal gasket 1, a part of a relatively wide flat region 13 surrounded by the second annular emboss 121 between a plurality of adjacent holes 11 and 12 (the hatched portion in FIG. 1). Is removed.
[0011]
As shown in FIG. 2, the flat region 13 can be provided in a form in which auxiliary holes 131 are formed. There may be a plurality of auxiliary holes 131 in the flat region 13.
[0012]
【The invention's effect】
According to the present invention, the partial removal portion of the flat region 13 or the auxiliary hole 131 functions as a relief for receiving deformation at the time of compressive deformation of the annular emboss, so that the compression allowance of the annular emboss becomes substantially uniform. The generated surface pressure can be made uniform, and the desired sealing function can be achieved.
[Brief description of the drawings]
FIG. 1 is a plan view of a metal gasket for a plurality of proximity holes according to the present invention, showing its principle.
FIG. 2 is a drawing similar to FIG. 1, showing an embodiment of a metal gasket.
FIG. 3 is an enlarged longitudinal sectional view taken along line III-III in FIG. 1 or FIG.
4 is an enlarged cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a plan view of a conventional metal gasket for a plurality of proximity holes.
[Explanation of symbols]
1 Metal gasket 11, 12 Proximity hole 13 Flat region 111 First annular emboss 121 Second annular emboss 131 Auxiliary hole

Claims (3)

A metal gasket mounted on a sealing surface of a component having a plurality of adjacent holes, the first annular emboss surrounding at least one predetermined hole of the plurality of adjacent holes, and the first annular emboss in the metal gasket provided with a second annular embossment that surrounds the plurality of proximity holes, including being only by surrounding the hole between the and the second annular embossment and said first annular embossment and said second annular embossing a plurality of adjacent A metal gasket for a plurality of proximity holes, wherein a part of a flat non-compression deformation region formed between the proximity holes is removed.   The metal gasket for a plurality of proximity holes according to claim 1, wherein auxiliary holes are formed in the flat region.   The metal gasket for a plurality of proximity holes according to claim 2, wherein there are a plurality of auxiliary holes in the flat region.

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