Taiho Kogyo Co., Ltd.

Yoshimasa Kuno

Kikuji Hayashida

Kiyotaka Ohtahara

Ryuichi Sakakibara

A vane pumphas a pump chamberA through an axial direction oil supply hole, a diameter direction oil supply holeand an axial direction oil supply grooveof an oil supply passage. A gas passagecontains a gas groovewhose one end is made to communicate with an outer space, the gas groovebeing formed on an outer peripheral surface of a shaft partB of a rotor, and the other end of this gas groove is made to intermittently overlappingly communicate with the axial direction oil supply grooveby a rotation of the rotor.

Vane pump having an oil supply passage communicating with a gas passage in the stopping state

A vane pump in which a lubricating oil from an oil supply pipeis supplied to a pump chamberA through an axial direction oil supply holeof an oil supply passage, a diameter direction oil supply hole, and an axial direction oil supply groove. A gas passageincludes a diameter direction gas holeand an axial direction gas groove, and the diameter direction gas holeis made to communicate with the axial direction gas groovewhen the diameter direction oil supply holeis made to communicate with the axial direction oil supply groove

Growing community of inventors

Toyota, Japan

Yoshimasa Kuno