JPS6327776U

JPS6327776U -

Info

Publication number: JPS6327776U
Application number: JP12110486U
Authority: JP
Priority date: 1986-08-06
Filing date: 1986-08-06
Publication date: 1988-02-23

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は油圧回
路図、第２図は液圧発生器の要部断面図、第３図
は第２図の―線視で示す位置表示装置の断面
図、第４図は第３図の―線視断面図、第５図
は別実施例の視断面図、第６図は第５図の―
視平面図である。１……アクチエータ、１ａ，１ｂ……圧力室、
２……開閉弁、３……液圧発生器、３ａ，３ｂ…
…吐出口、４……液溜タンク、５……位置表示装
置、５ａ……ケース本体、６ａ，６ｂ……導管、
７ａ，７ｂ……管、９ａ，９ｂ……戻り管、８，
８……フイルタ、１０，１０……リリーフ弁、１
１……パイロツト逆止弁、１２，１３……逆止弁
、１５……ハンドル、１６……回転軸、１４……
吸込管、２３，２３……カバー体、２１ａ，２１
ｂ……フリーピストン、２２，２２……大径鍔部
、２４ａ，２４ｂ……シリンダ室、２５……ばね
体、２６，３４……表示体、２７ａ，２７ｂ，３
５……表示部、２８，３３……表示窓、２９，３
０……Ｏリング。 The drawings show an embodiment of the present invention, in which Fig. 1 is a hydraulic circuit diagram, Fig. 2 is a sectional view of the main part of the hydraulic pressure generator, and Fig. 3 is a sectional view of the position display device shown in the line - - in Fig. 2. Figure 4 is a cross-sectional view of Figure 3, Figure 5 is a cross-sectional view of another embodiment, and Figure 6 is a cross-sectional view of Figure 5.
FIG. 1...actuator, 1a, 1b...pressure chamber,
2... Opening/closing valve, 3... Hydraulic pressure generator, 3a, 3b...
...Discharge port, 4...Liquid storage tank, 5...Position display device, 5a...Case body, 6a, 6b...Conduit,
7a, 7b...Pipe, 9a, 9b...Return pipe, 8,
8... Filter, 10, 10... Relief valve, 1
1... Pilot check valve, 12, 13... Check valve, 15... Handle, 16... Rotating shaft, 14...
Suction pipe, 23, 23...Cover body, 21a, 21
b...Free piston, 22, 22...Large diameter flange, 24a, 24b...Cylinder chamber, 25...Spring body, 26, 34...Display body, 27a, 27b, 3
5... Display section, 28, 33... Display window, 29, 3
0...O-ring.

Claims

[Scope of utility model registration request]

A case body forming a central chamber in a hydraulic circuit comprising a conduit for supplying hydraulic pressure to one pressure chamber of one actuator and a conduit for supplying hydraulic pressure to the other pressure chamber of the actuator. Left and right integrated cylinder chambers are provided opposite to each other on both the left and right sides of the center chamber, and a free piston is fitted into each cylinder chamber so as to be movable forward and backward, A spring body is disposed in contact with the tip of the free piston and biased in the opposite direction, while a display body is moved in the central chamber to move forward by coming into contact with the tip of the free piston that moves forward among the two free pistons. A position indicating device in a hydraulic circuit, characterized in that the device can be freely inserted into the hydraulic circuit, and one of the two cylinder chambers is connected to the one conduit, and the other cylinder chamber is connected to the other conduit.