Jtekt Corporation

Kyodo Yushi Co., Ltd.

Yoichiro Sankai

Hiroshi Inukai

Shinji Yamane

Junichi Imai

Yutaka Imai

Ryuji Nakata

Hideo Shibata

Yuta Sato

Ryosuke Saito

Atsushi Yao

Koji Yoshizaki

Satoru Murao

Hirofumi Inoue

A grease composition includes a base oil, a thickener, and an additive. The base oil contains a synthetic oil. The thickener contains a compound having a urea group. The additive contains a phosphoric compound, a calcium-based compound, and a hydrocarbon-based wax. A hub unit includes the grease composition enclosed therein.

Grease composition and hub unit

A transmission ratio variable mechanism includes an input member and an output member, which are rotatable around a first axis, an inner ring arranged to connect the input and output members to each other so as to be differentially rotatable, an outer ring, and a motor. A second axis serving as a center axis of the inner ring and the outer ring is inclined to the first axis. The transmission ratio variable mechanism includes uneven engagement sections including a projection provided on one of each of end surfaces of the inner ring and a power transmission surface corresponding to the end surface, and a recess. The inner ring includes a first member forming the first end surface and a second member forming the second end surface. The first and second members are formed separately from each other and coupled to each other so as to be movable together.

Transmission ratio variable mechanism and vehicle steering apparatus

Growing community of inventors

Osaka, Japan

Yoichiro Sankai