Metal gasket

摘要

There is provided a metal gasket that is less susceptible to lift and thrust phenomenon of housings and can effectively function as a sealing at a blowhole. The metal gasket includes an embossment portion provided with a pair of outer inclined portions and a pair of inner inclined portions. The metal gasket and satisfies the following relationships: Mh2/Mh1=1.10−1.81, W3>W1, and W3>W2, where Mh1 and Mh2 are vertical lengths, and W1, W2 and W3 are horizontal lengths. When the gasket is sandwiched in between two housings, tip ends abut on the housing to form two seal lines, and root ends, and another tip end abut on the housing H2 to form three seal lines.

主权项

1. A metal gasket comprising a frame shaped base extending horizontally and an embossment portion extending along the base and sandwiched in between two housings, wherein
the embossment portion includes a pair of outer inclined portions connecting to the base and projecting respectively toward one of the housings, and a pair of inner inclined portions connecting to tip ends of the respective outer inclined portions, projecting respectively toward the other of the housings and connecting to each other at their tip ends, the following relationships are satisfied:
Mh2/Mh1=1.10−1.81,W3>W1, and W3>W2, where, in a cross-section perpendicular to the extending direction of the embossment portion, P1 and P2 are respective intersections between a horizontal line of a front side of the base facing the one housing and inclined lines of front sides of the outer inclined portions; P3 and P4 are respective intersections between the inclined lines of the front side of the outer inclined portions and inclined lines of front sides of the inner inclined portions; P5 is an intersection between the inclined lines of the front sides of the inner inclined portions; Mh1 is a vertical length from P1 to P3; Mh2 is a vertical length from P3 to P5; W1 is a horizontal length from P1 to P5; W2 is a horizontal length from P2 to P5; and W3 is a horizontal length from P3 to P4, and wherein when the metal gasket is sandwiched in between the housings, the tip ends of the outer inclined portions abut on the one of the housings to form two seal lines, and root ends of the outer inclined portions and the tip end of the inner inclined portions abut on the other of the housing to form three seal lines.