JPH0419922U

JPH0419922U -

Info

Publication number: JPH0419922U
Application number: JP6168090U
Authority: JP
Priority date: 1990-06-13
Filing date: 1990-06-13
Publication date: 1992-02-19
Anticipated expiration: 2005-06-13
Also published as: JP2587070Y2

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例に係るインチング
バルブの構造図、第２図は本考案の第１実施例に
係るインチングバルブスプール部オリフイスの配
置図、第３図は本考案の実施例及び従来例のイン
チング特性図、第４図は本考案の実施例の調圧時
におけるインチングバルブの構造図、第５図は本
考案の第２実施例に係るインチングバルブの構造
図、第６図は本考案の第３実施例に係るインチン
グバルブの構造図、第７図は従来のインチングバ
ルブを示す構造図。１……スプール、２……プランジヤ、３……調
圧スプリング、４……リターンスプリング、５…
…バルブボデイ、１０，１１……ポート、１３…
…リターンスプリング、２１……嵌挿穴。 Fig. 1 is a structural diagram of an inching valve according to the first embodiment of the present invention, Fig. 2 is a layout diagram of the orifice of the inching valve spool according to the first embodiment of the present invention, and Fig. 3 is an embodiment of the present invention. and an inching characteristic diagram of the conventional example, FIG. 4 is a structural diagram of the inching valve during pressure regulation according to the embodiment of the present invention, FIG. 5 is a structural diagram of the inching valve according to the second embodiment of the present invention, and FIG. 6 FIG. 7 is a structural diagram of an inching valve according to a third embodiment of the present invention, and FIG. 7 is a structural diagram of a conventional inching valve. 1...Spool, 2...Plunger, 3...Pressure adjustment spring, 4...Return spring, 5...
...Valve body, 10, 11...Port, 13...
...Return spring, 21...Insertion hole.

Claims

[Scope of utility model registration request]

The oil hole 1A is slidably inserted into the insertion hole 21 of the valve body 5 and is always in communication with the clutch side port 11, the oil hole 1B is in communication with the clutch side port 11 only during pressure adjustment, and is coaxial with the insertion hole 21. Small diameter land 25, annular groove 1D configured on the small diameter land 25
, hydraulic pump side port 10 and clutch side port 1
1, and a cylindrical hole 23 forming a pressure receiving chamber at the end of the spool 1.
and a plunger 2 that is slidably incorporated into the insertion hole 21 and has an annular groove 2C that communicates with an oil hole 5C provided in the valve body 5 when the pressure is not adjusted, and an oil hole 2A that communicates with an annular groove 1D of the spool 1. , a fitting hole 27 provided in the plunger 2, coaxial with the fitting hole 21, into which the small diameter land 25 can be slidably inserted; and a pressure regulating hole 27 interposed between the spool 1 and the plunger 2. a return spring 13 interposed between the valve body 5 and the spool 1 so as to oppose the pressure regulating spring 3; and a return spring 13 interposed between the valve body 5 and the spool 1 so as to oppose the pressure regulating spring 3;
and a return spring 4 interposed between the plunger 2 and the plunger 2.