JPS61112177U

JPS61112177U -

Info

Publication number: JPS61112177U
Application number: JP19631984U
Authority: JP
Priority date: 1984-12-27
Filing date: 1984-12-27
Publication date: 1986-07-16

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示すポペツト形
電磁四方弁の縦断面図、第２図は同じくそれを油
圧記号で示し、シリンダを駆動する回路を構成し
た油圧回路図、第３図は第２図のシリンダの速度
変化を示す線図、第４図はこの考案によるポペツ
ト形電磁四方弁の他の使用例を示す油圧回路図、
第５図はこの考案の他の実施例の左側の三方弁付
近のみを示す縦断面図、第６図は従来のポペツト
形電磁四方弁の一例を示す縦断面図、第７図は同
じくそれを油圧記号で示した図である。１０……ポペツト形電磁四方弁、１１……メイ
ンボデイ、１２，１２′……ポペツト形三方弁、
１４，１４′……スリーブ、１５，１５′……ス
プール、１５ａ，１５ａ′……ガイド部、１５ｂ
，１５ｂ′……ポペツト部、１７，１７′……ス
プリング、１８，１８′，１９，１９′，２０…
…油孔、２１……シリンダ、ＳＯＬＡ，ＳＯＬ
Ｂ……ソレノイド。 Fig. 1 is a vertical cross-sectional view of a poppet-type electromagnetic four-way valve showing an embodiment of this invention, Fig. 2 is a hydraulic circuit diagram showing it with hydraulic symbols and constitutes a circuit that drives the cylinder, and Fig. 3 is a hydraulic circuit diagram showing it with hydraulic symbols. Fig. 2 is a diagram showing cylinder speed changes; Fig. 4 is a hydraulic circuit diagram showing another example of the use of the poppet type electromagnetic four-way valve according to this invention;
Fig. 5 is a longitudinal sectional view showing only the vicinity of the left three-way valve of another embodiment of this invention, Fig. 6 is a longitudinal sectional view showing an example of a conventional poppet type electromagnetic four-way valve, and Fig. 7 is a longitudinal sectional view showing the same. It is a diagram shown with hydraulic symbols. 10... Poppet type electromagnetic four-way valve, 11... Main body, 12, 12'... Poppet type three-way valve,
14, 14'... Sleeve, 15, 15'... Spool, 15a, 15a'... Guide portion, 15b
, 15b'...Poppet part, 17, 17'...Spring, 18, 18', 19, 19', 20...
...Oil hole, 21...Cylinder, SOL A, SOL
B...Solenoid.

Claims

[Claims for Utility Model Registration] 1. A pair of poppet-type three-way valves each having a built-in valve body for switching the connection relationship between the ports in a fixed part forming three ports, symmetrically arranged in one main body. A poppet-type electromagnetic four-way valve, characterized in that a four-position four-way valve is constructed by attaching a pair of solenoids to both ends of the main body to independently drive each valve element of the pair of three-way valves. 2. The poppet-type electromagnetic four-way valve according to claim 1, wherein each of the pair of poppet-type three-way valves is a pressure-balanced poppet valve. 3. Each valve body of the pair of poppet-type three-way valves is a spool with an integral poppet part, and the guide side of each poppet part is a tapered land, and the opposing side of the pair of spools is a right-angled land, which is connected to the fixed part. A poppet-type electromagnetic four-way valve according to claim 1 or 2 of the utility model registration claim, which is formed to seal.