JPH029381U

JPH029381U -

Info

Publication number: JPH029381U
Application number: JP8796588U
Authority: JP
Priority date: 1988-07-04
Filing date: 1988-07-04
Publication date: 1990-01-22

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係るリリーフ弁の
全体構成を示す縦断面図、第２図は第１図のリリ
ーフ弁の弁体の拡大断面図、第３図は第２図の弁
体の他の実施例を示す断面図、第４図は第２図の
弁体のさらに他の実施例を示す断面図、第５図は
従来のリリーフ弁の全体構成を示す縦断面図、第
６図は第５図のリリーフ弁の弁体の拡大断面図、
第７図は第５図の弁体に流体の圧力が作用した場
合のシート材の変形状態を示す縦断面図である。符号の説明、１……リリーフ弁、２……ハウジ
ング、３……弁体、３１……本体部、３１ａ……
本体部先端面（ストツパ部）、３２……シート材
、３４……頂部、４……弁座、５……押圧ばね、
６……弁室、７……圧力解放口。 FIG. 1 is a vertical sectional view showing the overall structure of a relief valve according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the valve body of the relief valve shown in FIG. 1, and FIG. 4 is a sectional view showing still another embodiment of the valve body shown in FIG. 2; FIG. 5 is a vertical sectional view showing the overall structure of a conventional relief valve; FIG. Figure 6 is an enlarged sectional view of the valve body of the relief valve in Figure 5;
FIG. 7 is a longitudinal sectional view showing a deformed state of the sheet material when fluid pressure is applied to the valve body of FIG. 5. FIG. Explanation of symbols, 1... Relief valve, 2... Housing, 3... Valve body, 31... Main body, 31a...
Main body tip end surface (stopper part), 32... Sheet material, 34... Top part, 4... Valve seat, 5... Pressing spring,
6...Valve chamber, 7...Pressure release port.

Claims

[Scope of Claim for Utility Model Registration] A sheet material made of rubber-like elastic material is provided at the contact portion of the valve body with the valve seat, and on the other hand, a sheet material made of a rubber-like elastic material is provided on the valve seat side, protruding from the periphery of the pressure release port opening into the valve seat. The relief valve is provided with a convex ring portion that presses the sheet material against the convex ring portion to close the pressure release port, and the valve body is in contact with the valve seat to reduce the distance between the valve body and the valve seat. A stopper portion is provided to limit the pressure to a predetermined amount, and a portion of the sheet material facing the pressure release port inside the convex ring portion protrudes more convexly toward the pressure release port side than a portion outside the convex ring portion. A relief valve characterized by being formed by forming.