JPS60187381U

JPS60187381U - Variable pump pressure guarantee device

Info

Publication number: JPS60187381U
Application number: JP7483684U
Authority: JP
Inventors: 安藤　邦弘
Original assignee: カヤバ工業株式会社
Priority date: 1984-05-22
Filing date: 1984-05-22
Publication date: 1985-12-12

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図は本考案に係る可変ポンプの圧力保障装置を一部
断面で示す図、第２図イおよび口はその特性線図、第３
図は従来の可変ポンプの圧力保障装置を第１図と同様に
示す図、第４図イおよび口　　。はその特性線図である。 ′　１０・・・ピストン、１２・・・可変ポンプ、１３
・・・スプール、２１・・・スプリング、２２・・・ス
トッパ、２　　　　。４・・・弾発部材、２５・・・ロッド、Ａ・・・小なる
受圧面側油室、Ｂ・・・大な−る受圧面側油室、Ｅ・・
・油圧作動−機構。第２図　　　　　　　　− １第３図　　　　−Fig. 1 is a partial cross-sectional view of the pressure guarantee device for a variable pump according to the present invention, Fig. 2 shows its characteristic line, and Fig. 3 shows its characteristic line.
The figures show the pressure guarantee device of a conventional variable pump in the same way as Fig. 1, and Fig. 4 (a) and (b). is its characteristic diagram. ' 10... Piston, 12... Variable pump, 13
...Spool, 21...Spring, 22...Stopper, 2. 4... Resilient member, 25... Rod, A... Small pressure receiving side oil chamber, B... Large pressure receiving side oil chamber, E...
・Hydraulic actuation-mechanism. Figure 2-1 Figure 3-

Claims

[Scope of utility model registration request]

(1) A piston that is connected to a variable pump and that slides depending on the hydraulic pressure discharged from the variable pump, and that allows the amount of oil discharged from the variable pump to be changed at the time of sliding; sliding by overcoming the repulsive force of the spring by the discharge hydraulic pressure, and supplying the discharge hydraulic pressure to one end surface of the piston during the sliding;
In the pressure guarantee device for a variable pump comprising a spool that allows the piston to slide, the stopper that locks the spring in contact with the spool is arranged after the spool slides a predetermined stroke. 1. A variable pop pressure compensation device, characterized in that it is configured to allow its position to be displaced.

(2) The spool is slidably disposed through the axial center of the spool, and has a rod formed to protrude from the front and rear ends of the spool, so that the spool slides smoothly. Utility model registration claim 1, wherein a piston that slides is brought into contact with one end of the rod, and the other end of the rod is allowed to come into contact with a stopper. Pressure guarantee device for the variable pump described.