Thk Co., Ltd.

Toshihisa Sakamoto

Tetsuhiro Nishide

Toshiro Minami

Kazuhiko Akiyama

Yuji Tachikake

This rotation-linear motion conversion apparatus () includes: a pinion shaft () in which a pinion gear () is formed; a rack bar () in which a rack gear () that engages with the pinion gear () and a support surface () along a longitudinal direction are formed; and a support part () that supports the rack bar () movably along the support surface (). The support part () prevents a movement of the rack bar () in a direction X perpendicular to a surface () in which the rack gear () is formed.

Rotation-linear motion conversion apparatus and steering apparatus

A rotation-linear motion conversion apparatus () includes: a rack bar () in which a rack gear () is formed; a housing () that surrounds the rack bar (); a pinion shaft () including a pinion gear () that engages with the rack gear () and that is inserted inside the housing (); and a support part () that is provided on an opposed surface (), which is opposed to the rack gear (), of the housing () and that supports the rack bar () movably in a longitudinal direction of the rack bar ().

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Tokyo, Japan

Toshihisa Sakamoto