JPH01149061U

JPH01149061U -

Info

Publication number: JPH01149061U
Application number: JP4705888U
Authority: JP
Priority date: 1988-04-06
Filing date: 1988-04-06
Publication date: 1989-10-16
Anticipated expiration: 2003-04-06
Also published as: JPH0613429Y2

Description

[Brief explanation of drawings]

第１図は本考案にかかる金属ガスケツトの要部
底面図、第２図は第１図の平面図、第３図は第１
図の金属ガスケツトを用い、感圧試験紙によりシ
ール特性を試験した状態を示したシール特性図、
第４図は従来の金属ガスケツトの要部底面図、第
５図は第４図のビード交叉部を拡大した状態の説
明用斜視図、第６図は第４図のビード部に対する
感圧試験紙によりシール特性を試験した状態を示
したシール特性図である。１：金属薄板、２：被シール部、３：ビード部
、４：ビード交叉部、４′：ビード交叉部頂面、
５：溝、６：溝底面、６′：拡大溝底面、７：溝
斜辺、８：アール部、４ａ：ビード交叉部のシー
ル、３ａ：一般ビード部のシール。 Fig. 1 is a bottom view of the main parts of the metal gasket according to the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is the main part of the metal gasket according to the present invention.
A sealing characteristic diagram showing the sealing characteristics tested using pressure-sensitive test paper using the metal gasket shown in the figure.
Fig. 4 is a bottom view of the main parts of a conventional metal gasket, Fig. 5 is an explanatory perspective view of the bead intersection shown in Fig. 4 in an enlarged state, and Fig. 6 is a pressure-sensitive test paper for the bead part shown in Fig. 4. FIG. 3 is a seal characteristic diagram showing a state in which the seal characteristics were tested. 1: Thin metal plate, 2: Sealed portion, 3: Bead portion, 4: Bead intersection portion, 4′: Top surface of bead intersection portion,
5: Groove, 6: Groove bottom surface, 6': Enlarged groove bottom surface, 7: Groove oblique side, 8: Rounded portion, 4a: Seal at bead intersection, 3a: Seal at general bead portion.

Claims

[Scope of Claim for Utility Model Registration] (1) At the bead crossing part formed when a sealing bead part is created by surrounding the part to be sealed with an elastic thin metal plate having a shape similar to the sealing surface, the bead crossing part A metal gasket with improved sealing characteristics at the top surface of a bead intersection, characterized in that the groove bottom width of one bead portion is larger than the groove bottom width of the other bead portions. (2) The bead intersection top according to claim 1 of the utility model registration claim, in which the radius of the radius of the bead intersection is set to 1/2 or more of the bead width, and the groove bottom width of the bead intersection is increased. Metal gasket with improved surface sealing properties. (3) Scope of Utility Model Registration Claims 1 or 2, in which the groove bottom width of the general bead portion leading to the bead intersection portion is gradually increased, and the bead intersection portion is set larger than the width of other general bead portions. Metal gasket as described in section. (4) The metal gasket according to claim 1, 2, or 3 of the utility model registration claim, in which the bead portion leading to the bead intersection portion is in a straight line with a length that is at least four times the width of the bead portion.