Mazda Motor Corporation

Kyb Corporation

Oiles Corporation

Denka Company Limited

Kayaba Industry Company, Ltd.

Tokyo Medical and Dental University

Institute of Science Tokyo

Hiroki Masuda

Hideki Tanaka

Hiroyuki Kikuchi

Takashi Gotou

Kazuhiko Akeda

Nobuhiko Yui

Gaku Ikeyama

Junya Kuwagaki

Takuzo Ito

Jun Ouchi

Tomonori Taniguchi

Mitsuhiko Fujikake

Kazuya Sato

Yoshimitsu Fumimoto

Masaki Takahashi

Ruriko Aoyama Sekiya

Masahiro Hakariya

Tetsuya Yoda

Takanori Iwata

Yoshinori Arisaka

A clearance is created between an inner circumference of a bushing main body () which surrounds a rack () across a row of rack gear teeth () and an outer circumference of the rack (), and two supporting surfaces (A,B) which face each other with a bushing main body axis O therebetween and a supporting surface (C) which faces a back surface of the rack (), each extending along an x-axis direction, are formed on the inner circumference of the bushing main body (). The rack () in a neutral state is supported by the two supporting surfaces (A,B) so as to be displaceable along a z-axis direction, and the rack () in operation is stably supported by the three supporting surfaces (A-C) at three places. A groove bottom position of an annular elastic member attachment groove (), which is formed on an outer circumference of the bushing main body (), is offset toward the support surface (B) only in an area on a support surface (B) side from the bushing main body axis O, and therefore an elastic ring () attached to the elastic member attachment groove (), protrudes above an outer circumferential surface of the bushing main body (), but only in the area on the support surface (B) side from the bushing main body axis O.

Rack bushing and steering device

Growing community of inventors

Tokyo, Japan

Hiroki Masuda