JPS5973613U

JPS5973613U - Hydraulic system pressure relief mechanism

Info

Publication number: JPS5973613U
Application number: JP17088682U
Authority: JP
Inventors: 真力田　達明
Original assignee: Individual
Current assignee: Individual
Priority date: 1982-11-10
Filing date: 1982-11-10
Publication date: 1984-05-18

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案の第１実施例を示しており、
第１図は圧抜き機構を備えた油圧装置の横断面図、第２
図は油圧装置の一部断面側面図、第３図は要部の拡大断
面図、第４図は本考案の第２実施例を示す要部の断面図
、第５図は第３実施例を示す要部の断面図、第６図は第
４実施例を示す要部の断面図、第７図は従来機構を示す
断面図である。１・・・油圧装置、３・・・油圧シリンダ、４・・・圧
抜き機構、２２・・・ケーシング、２３・・・スプール
室、２４・・・高圧油路、２５・・・低圧油路、２６・
・・スプール、３４・・・ペダル、３８・・・テーパ部
、４１・・・弁座、４２・・・弁体、４３・・・押動体
、４５・・・傾斜面。1 to 3 show a first embodiment of the present invention,
Figure 1 is a cross-sectional view of a hydraulic system equipped with a pressure relief mechanism;
The figure is a partially sectional side view of the hydraulic system, Figure 3 is an enlarged sectional view of the main parts, Figure 4 is a sectional view of the main parts showing the second embodiment of the present invention, and Figure 5 is the third embodiment. FIG. 6 is a cross-sectional view of the main parts showing the fourth embodiment, and FIG. 7 is a cross-sectional view of the conventional mechanism. DESCRIPTION OF SYMBOLS 1... Hydraulic device, 3... Hydraulic cylinder, 4... Pressure release mechanism, 22... Casing, 23... Spool chamber, 24... High pressure oil path, 25... Low pressure oil path , 26・
...Spool, 34...Pedal, 38...Tapered portion, 41...Valve seat, 42...Valve body, 43...Pushing body, 45...Slope surface.

Claims

[Scope of utility model registration request]

A spool chamber 23 in which a spool 26 is slidably disposed in the axial direction is formed in the casing 22, and a high pressure oil passage 24 and a low pressure oil passage 25 communicating with this spool chamber 23 are formed, and a valve is provided in the high pressure oil passage 24. In a pressure relief mechanism for a hydraulic device that is provided with a valve body 42 that forms a seat 41 and is pushed by the sliding movement of the spool 26, the high pressure oil passage 24 is formed to intersect with the sliding direction of the spool 26. . A pressure relief mechanism for a hydraulic device, wherein the spool 26 is formed with an inclined surface inclined with respect to the direction of sliding force so as to push the valve body 42.