Eagle Industry Co., Ltd.

Masaki Hoshi

Tadanobu Kawato

Naoki Nishimura

Hiroyuki Iwanaga

A solenoid valve includes: a valve body; a sleeve which the valve body is accommodated; a solenoid casing connected to the sleeve on a first end side in an axial direction of the solenoid valve, and is closed on a second end side opposed to the first end side in the axial direction; a solenoid molded body in the solenoid casing; a yoke including a tubular portion inside the solenoid molded body, a flange portion projecting radially outward from an end portion of the tubular portion on the second end side; a movable iron core, which moves in the axial direction inside the yoke. The valve body is moved with the iron core by energizing a coil of the solenoid molded body, and the flange portion has an annular outer peripheral surface that is continuous, and is disposed on the second end side of the solenoid molded body.

Solenoid valve

A solenoid valve includes: a movable iron core; a solenoid molded body disposed outside the movable iron core in a radial direction and including a coil; a solenoid casing accommodating the movable iron core and the solenoid molded body; a fixed iron core disposed inside the solenoid molded body in the radial direction to generate a magnetic force between the fixed iron core and the movable iron core when the coil is energized; and a valve unit that opens and closes a flow passage in accordance with a movement of the movable iron core. A magnetic material separate from the solenoid casing is disposed at an axial end portion of the coil outside the solenoid casing.

A spool valve includes a sleeve having a plurality of ports, and a spool arranged inside the sleeve and having a land formed so as to be brought into sliding contact with inner walls of the sleeve. A depression is formed in the land over an entire circumference.

Spool valve

A spool valve including a spool having a plurality of land portions; a sleeve having the spool housed such that the spool is movable in an axial direction and has an input port and an output port and small-diameter portions in the interior of the sleeve. The pressure and flow rate of a fluid passing between the land portions and the small-diameter portions are adjusted by movement of the spool; a plurality of adjustment portions formed as spaces between the small-diameter portions of the sleeve and the land portions of the spool overlapping with each other from a radial direction of the spool; and a guide portion constituted by the small-diameter portion and the land portion which define one of the adjustment portions having a cross-sectional area smaller than each of cross-sectional areas of adjacent two of the adjustment portions having the input port interposed therebetween in the axial direction.

A spool valve includes a sleeve and a spool arranged on an inside of a sleeve to be movable in a longitudinal direction, the sleeve being provided with an inflow port into which fluid is supplied from an external fluid supply hole, and an outflow port through which the fluid is flown to an outside of the sleeve, wherein a supply groove is formed on an outer periphery of the sleeve, and the supply groove includes an inlet space into which the fluid flows from the fluid supply hole and an outlet space formed on a side of the inflow port with respect to the inlet space in an axial direction.

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Tokyo, Japan

Masaki Hoshi