Toyota Jidosha Kabushiki Kaisha

Jtekt Corporation

Takashi Iwaguchi

Akira Yamashita

Masaaki Kondo

Eiji Okawachi

Toshikatsu Kubo

Munetoshi Kuroyanagi

Toshihiko Shima

Hidetoshi Fujiwara

Sogo Goto

Norihiko Saito

Hidetsugu Hayashi

The pressure reduction valve includes: a cylindrical portion, a piston and a spring. The cylindrical portion includes an inlet communicating with the primary side flow path and an outlet communicating with the secondary side flow path. The piston fitted into the cylindrical portion is slidable along an axis direction of the cylindrical portion within the cylindrical portion, and defines, within the cylindrical portion, a space communicating with the inlet and the outlet. The spring applies, to the piston, a force acting toward the space. The outlet is displaced in one direction from the center of the piston when seen in the axis direction. The force applied to the piston by the spring is distributed so as to deviate from the center of the piston to the side of the outlet.

Pressure reduction valve and gas supply device

A valve element of a pressure reducing valve includes a taper portion seated on an inner periphery of a valve hole that includes a first area, a second area and a third area in order from an upstream side. The first area is provided such that, when the valve element is open, the height of a passage defined between the first area and the taper portion gradually reduces toward a downstream side. The second area is provided such that the height of a passage defined between the second area and the taper portion is constant when the valve element is open and the entire second area contacts the taper portion when the valve element is closed. The third area is provided such that, when the valve element is open, the height of a passage defined between the third area and the taper portion gradually increases toward the downstream side.

Pressure reducing valve

Growing community of inventors

Nagoya, Japan

Takashi Iwaguchi