Jtekt Corporation

Itsuki Ono

Kaori Fujita

Toshio Murakami

Koichi Takanishi

Masaru Suzuki

A solenoid valve has a coil spring that biases a spool valve toward a solenoid portion, and an adjuster screw that is positioned to interpose the coil spring between the adjuster screw and the spool valve and that is screwed in an internally threaded portion of a sleeve so that its axial position is adjusted. The sleeve is swaged with a swaging tool etc. from an outer peripheral surface located on the outer peripheral side of the internally threaded portion of the sleeve, whereby the swaged part of the internally threaded portion is plastically deformed to the opposite side from the coil spring. The adjuster screw is thus fixed.

Solenoid valve and manufacturing method of the same

A solenoid valve is provided which can be reduced in size while allowing a plunger and a shaft to slide smoothly. A solenoid valve includes a solenoid portion with a plunger that moves in an axial direction using a magnetic force generated by a solenoid coil. The solenoid portion has a cover member that houses the plunger, a shaft that is movable in the axial direction along with the plunger, and a core member that attracts the plunger in the axial direction. The shaft is supported by a first bearing portion formed on a cylindrical portion of the core member and a second bearing portion formed on a second bottom portion of the cover member such that the shaft is movable in the axial direction.

Solenoid valve

A solenoid valve includes: a sleeve having a supply port and an output port; a spool valve that is housed in a valve hole formed in the sleeve so as to be movable in the axial direction, and that changes a flow passage area between the supply port and the output port by moving in the axial direction; a solenoid portion that pushes the spool valve toward one axial side; and a coil spring that urges the spool valve toward the solenoid portion. A housing hole that is a bottomed hole is formed in the spool valve, and a columnar piston member is slidably housed in the housing hole. The spool valve has an introduction hole through which a pressure of the hydraulic fluid output from the output port is introduced into a space between a bottom face of the housing hole and one end face of the piston member.

Growing community of inventors

Tokai, Japan

Itsuki Ono