JPS62161074U

JPS62161074U -

Info

Publication number: JPS62161074U
Application number: JP4830186U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1987-10-13

Description

[Brief explanation of the drawing]

第１図は本考案に従つた逆止弁の取付構造の実
施例を示した断面図、第２図は第１図に於けるグ
ロメツトの断面図、第３図は本考案の他の実施例
を示したグロメツトの断面図、第４図は本考案の
他の実施例を示した逆止弁の一部断面図、第５図
は本考案の他の実施例を示したフロントシエル前
面の一部断面図、第６図は従来の取付構造を示し
た断面図である。１０……取付構造、１１……負圧式倍力装置、
１２……フロントシエル、１２ａ……取付孔、１
３……グロメツト、１４……溝部、１２ｂ，１４
ｂ，１６ａ，１９ａ……突起部、１５……内孔部
、１６……環状端面、１７……逆止弁、１８……
ニツプル部、１９……フランジ部、２０……隙間
。 Fig. 1 is a sectional view showing an embodiment of the check valve mounting structure according to the present invention, Fig. 2 is a sectional view of the grommet in Fig. 1, and Fig. 3 is another embodiment of the present invention. FIG. 4 is a partial cross-sectional view of a check valve showing another embodiment of the present invention, and FIG. 5 is a front view of the front shell showing another embodiment of the present invention. A partial sectional view, FIG. 6 is a sectional view showing a conventional mounting structure. 10...Mounting structure, 11...Negative pressure booster,
12...Front shell, 12a...Mounting hole, 1
3... Grommet, 14... Groove, 12b, 14
b, 16a, 19a... protrusion, 15... inner hole, 16... annular end surface, 17... check valve, 18...
Nipple part, 19...Flange part, 20...Gap.

Claims

[Scope of utility model registration request]

A grommet is interposed between the negative pressure booster and the negative pressure introducing check valve, and the grommet is connected to an inner hole portion into which the nipple portion of the check valve is hermetically fitted, and to an inner hole portion of the check valve. In a check valve mounting structure consisting of an annular end surface that the flange abuts, and a groove on the outer circumferential surface that airtightly fits into a mounting hole provided on the front surface of the front shell, the flange of the check valve and A protrusion is provided on either one of the contact surfaces with the annular end surface of the grommet or the contact surface between the front shell front surface and the side surface of the groove, and a gap is provided in the axial direction between the two opposing surfaces. Installation structure of check valve for negative pressure booster.