JPH0233980U

JPH0233980U -

Info

Publication number: JPH0233980U
Application number: JP11395488U
Authority: JP
Priority date: 1988-08-29
Filing date: 1988-08-29
Publication date: 1990-03-05

Description

[Brief explanation of drawings]

図面は本考案の電磁式方向制御弁におけるスプ
ールの戻しばね構造の実施例を示し、第１図はそ
の一実施例電磁式方向制御弁の全体構成を示す縦
断面図、第２図はその要部の拡大断面図、第３図
は従来例の戻しばね構造を示す模式断面図である
。１……弁本体、２……弁室、２Ａ……弁孔、３
……スプール、３Ａ……シール部、５……流入ポ
ート、６……流出ポート、８……排出通路、１０
……排出孔、１３……ばね収容凹部、１３ａ……
ばね座、１４……戻しばね、１５……流通孔。 The drawings show an embodiment of the spool return spring structure in the electromagnetic directional control valve of the present invention, FIG. 1 is a longitudinal sectional view showing the overall structure of the electromagnetic directional control valve according to the embodiment, and FIG. 2 shows its main components. FIG. 3 is a schematic cross-sectional view showing a conventional return spring structure. 1... Valve body, 2... Valve chamber, 2A... Valve hole, 3
... Spool, 3A ... Seal part, 5 ... Inflow port, 6 ... Outflow port, 8 ... Discharge passage, 10
...Discharge hole, 13... Spring accommodation recess, 13a...
Spring seat, 14... Return spring, 15... Distribution hole.

Claims

[Claims for Utility Model Registration] The valve body has a plurality of seals and a valve chamber that slides and guides an electromagnetically driven spool. the valve hole divides the valve chamber into a front part and a rear part, and one sealing portion of the spool moves across the inlet port between the valve hole and the front part of the valve chamber. In the electromagnetic directional control valve, a discharge hole communicating with the discharge passage is provided at the front end of the valve chamber, and a spring accommodating recess is provided in the seal portion of one of the spools in the axial direction of the spool, and the discharge hole communicates with the discharge passage. It is formed to open toward the hole, and one end of the return spring is accommodated in contact with the rear end surface of the spring housing recess, and the other end of the return spring is in contact with the front end of the valve chamber. An electromagnetic directional control valve characterized in that an appropriate number of communication holes communicating with the spring housing recess are provided on the circumferential surface of the seal portion at positions corresponding to the inflow ports.