JPH0456902U

JPH0456902U -

Info

Publication number: JPH0456902U
Application number: JP10118590U
Authority: JP
Priority date: 1990-09-26
Filing date: 1990-09-26
Publication date: 1992-05-15
Anticipated expiration: 2005-09-26
Also published as: JP2565202Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す切断面図、第
２図は中立にしたときの油圧回路を示す図、第３
図は本考案の他の実施例を示す切断面図、第４図
は中立にしたときの油圧回路を示す図、第５図は
従来例を示す切断面図である。１……操作用パイロツト弁、２……ボデイ、３
……操作レバー、４，４ａ……プツシユロツド、
５，５ａ……ロツド、７，７ａ……ばね、８，８
ａ……スプール、９，９ａ……戻しばね、１０，
１０ａ，１０ｂ，１０ｃ……通路、１０ｄ，１０
ｅ……分岐通路、１１，１１ａ……通路、１２…
…油圧源、１３……タンク、１４……切換弁（制
御対象物）、１５，１５ａ……通路、１６，１７
……切換弁（制御対象物）。 Figure 1 is a cross-sectional view showing one embodiment of the present invention, Figure 2 is a diagram showing the hydraulic circuit when it is in neutral, and Figure 3 is a diagram showing the hydraulic circuit when it is in neutral.
The figure is a cross-sectional view showing another embodiment of the present invention, FIG. 4 is a diagram showing a hydraulic circuit in neutral, and FIG. 5 is a cross-sectional view showing a conventional example. 1... Pilot valve for operation, 2... Body, 3
...Operation lever, 4, 4a...Push rod,
5, 5a...rod, 7,7a...spring, 8,8
a... Spool, 9, 9a... Return spring, 10,
10a, 10b, 10c... passage, 10d, 10
e... Branch passage, 11, 11a... Passage, 12...
... Hydraulic power source, 13 ... Tank, 14 ... Switching valve (object to be controlled), 15, 15a ... Passage, 16, 17
...Switching valve (controlled object).

Claims

[Scope of utility model registration request]

The body of the hydraulic pilot valve for operation includes two sets of push rods, a rod that is movable vertically relative to each push rod and has a spring interposed between the push rods, and a lower end of each of the above rods. and a spool whose upper end is in contact with the spool and whose lower end is interposed with a return spring, and further has two passages in the body: a passage leading to the hydraulic source, a passage leading to the tank, and a passage leading to the object to be controlled. In an operating hydraulic pilot valve device in which each of the spools is formed with a passage that can communicate with each passage of the body, a branch passage that branches from the passage that leads to the hydraulic power source is formed in the body, A hydraulic pilot valve device for operation, characterized in that a controlled object for operating another device is connected to the branch passage, and a passage communicating with the branch passage is separately formed in the spool.