JPS6079059U - 3 position control solenoid valve - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. 1: first magnetic core, 2 two channels, 3: fluid inlet, 4
Niorifice member, 5 Niorifice, 6: Source port, 7
: plunger working space, 8: non-magnetic sleeve, 9: second magnetic core, 10: electric coil, 11: coil bobbin, 12: output port, 13: output pressure chamber, 14: base member, 15 drain port , 16: flow path, 17: fluid outlet, 18: magnetic plunger, 19: first seal member, 20: second seal member, 21: first valve member, 22
: second valve member, 23: second coil spring (second
spring member), 24: Stopper, 25: Spring receiver, 26
:First coil spring (first spring member), 27:
Magnetic yoke, 28: Pressure adjustment chamber, 29: Electric lead,
30: Cover plate, 31: Bolt, 118: Drain port.

Claims (1)

[Claims for Utility Model Registration] A cylindrical-wound electric coil; having a fluid inlet with a tapered outer surface for plunger suction and a tapered surface for the opening end of the valve member receiver, and is connected to the inner space of the electric coil. a first magnetic core having an advanced tip and a fluid path communicating with the fluid inlet and source port; a first magnetic core having a central hole located on the opposite side of the electric coil from the first magnetic core No. 2 magnetic core; A magnetic yoke extending from the rear end of the first magnetic core to the second magnetic core via the outside of the electric coil; From the tip of the first magnetic core to the second magnetic core A cylindrical non-magnetic sleeve that extends over the hole; has a suction taper inner surface at its tip opposite to the plunger suction taper outer surface of the first magnetic core, and a relatively deep seal that is continuous with the suction taper inner surface; Has a material storage hole,
A magnetic plunger, at least a portion of which enters the inside of the non-magnetic sleeve and is slidably guided along it by the non-magnetic sleeve. Spring member 1: A drain port which is located on the rear end side of the magnetic plunger and has a fluid outlet whose opening end is a tapered surface for the valve member receiver, and a fluid passage communicating with the fluid outlet and the drain port. : It has a first valve member that closes the fluid inlet at a part facing the fluid inlet, has a flow path that communicates the outside and the inside of the magnetic plunger, and is located in the sealing material storage hole of the magnetic plunger. a first sealing member slidably guided along the direction of movement of the plunger by the inner surface of the hole and having a length that is substantially non-inclined with respect to the direction of movement; closing it in a region opposite the fluid outlet; It has a second valve member, has a flow path that communicates the outside and the inside of the magnetic plunger, and is located in the sealing material storage hole of the magnetic plunger, and is arranged along the moving direction of the plunger by the inner surface of the hole. a second sealing member that is slidably guided and has a length that is substantially non-inclined with respect to the direction of movement; a second sealing member that is inside the first and second sealing members and pushes them away from each other; a spring member; a stopper that limits the movement of the second seal member with respect to the magnetic plunger in a direction away from the first seal member by a predetermined value; and a second seal member located on the rear end side of the magnetic plunger. an output pressure chamber that communicates with the flow path and output port; 3-position control solenoid valve.