JPS61184150U

JPS61184150U -

Info

Publication number: JPS61184150U
Application number: JP6895985U
Authority: JP
Priority date: 1985-05-10
Filing date: 1985-05-10
Publication date: 1986-11-17

Description

[Brief explanation of the drawing]

第１図は本考案に係るモジユレーテイングバル
ブの側面断面図であり、第２図ないし第４図は本
考案に係るモジユレーテイングバルブの動作態様
を示す側面断面図、第５図は従来のモジユレーテ
イングバルブの側面断面図である。１…モジユレーテイングバルブ、２…バルブケ
ーシング、３…大シリンダ、４…圧力室、５…第
１のスプール、１４…ポンプポート、１７…ドレ
ンポート、１９…クラツチポート、２０…主通路
、２２…ばね、２４…小シリンダ、２５…第２の
スプール、２８…アクチユエータ。 FIG. 1 is a side sectional view of the modulating valve according to the present invention, FIGS. 2 to 4 are side sectional views showing the operating mode of the modulating valve according to the present invention, and FIG. 5 is a side sectional view of the modulating valve according to the present invention. FIG. 3 is a side cross-sectional view of the modulating valve. DESCRIPTION OF SYMBOLS 1... Modulating valve, 2... Valve casing, 3... Large cylinder, 4... Pressure chamber, 5... First spool, 14... Pump port, 17... Drain port, 19... Clutch port, 20... Main passage, 22 ...Spring, 24...Small cylinder, 25...Second spool, 28...Actuator.

Claims

[Claims for Utility Model Registration] (1) It has a large cylinder inside, and has a pump port, a drain port, and a clutch port, and a pressure chamber is defined at the end of the cylinder, and one end is connected to the large cylinder. a valve casing having a main passage that opens into the cylinder and communicates with the pressure chamber and the clutch port at the other end; a main passage that is fitted into the large cylinder of the valve casing and has a small cylinder therein; a first spool which is biased by a spring and has its other end facing the pressure chamber, and a second spool which is fitted into the small cylinder of the first spool and whose one end is engaged with the actuator. a large-diameter passage and a small-diameter passage that communicate with the pump port and the main passage through the first spool, and communicate with the drain port and the pressure chamber through the second spool. and a drain passage, when the pressure chamber is under no load, the large diameter passage is opened, the small diameter passage is closed, and the drain passage is closed, and the first spool is opened by the pressure inside the pressure chamber. When the spring moves against the biasing force of the spring, it closes the large diameter passage, opens the small diameter passage, and closes the drain passage, and the pressure inside the pressure chamber causes the first spool to move against the biasing force of the spring. When the second spool moves against the force and is moved to one side by the actuator, the drain passage is opened, and when the second spool is moved to the other side, the drain passage is closed. Modulating valve. (2) The large diameter passage consists of an annular groove formed around the first spool, and the small diameter passage consists of
It consists of a passage that communicates the outer circumferential surface of the first spool with the inner surface of the small cylinder, and further includes a drain passage.
an annular groove formed on the circumferential surface of the second spool;
The modulating valve according to claim 1, which is a registered utility model, and is comprised of a passage communicating between the outer circumferential surface of the first spool and the inner surface of the small cylinder.