Aisin Seiki Kabushiki Kaisha

Shimpei Fujii

Takashi Suzuki

Akiya Taneda

Teruhide Sato

Shuuetsu Suzuki

Naoya Yoshizawa

Soichiro Kono

Shinsuke Ando

Yusuke Akagi

Shinya Tamawari

A rear wheel steering apparatus for a vehicle includes: a housing connected via first and second connecting members to a suspension mechanism supporting rear wheels of a vehicle; an electric motor accommodated in the housing; a planetary gear mechanism having a sun gear connected to an output shaft of the electric motor, a ring gear non-rotatably supported inside the housing, a planetary gear meshing with the ring gear and the sun gear, and a carrier connected to the planetary gear, and reducing the output of the electric motor; and a linear motion mechanism having a nut member connected to the planetary gear mechanism and forming the carrier, and a rod screwed to the nut member and connected to the second connecting member, and converting the rotational motion of the nut member into the linear motion of the rod.

Rear wheel steering apparatus for vehicle

A rear wheel steering apparatus for a vehicle includes a housing, an electric motor, a planetary gear mechanism, a linear motion mechanism including a nut member and a rod threadedly engaged with the nut member, the housing including a cylindrical body which includes a lock portion provided at an inner surface of the cylindrical body, the housing including a connection cover, a cylindrical holding member holding a ring gear within the cylindrical body in a state where the ring gear is prevented from rotating, and a bearing, wherein the bearing and the cylindrical holding member are disposed and held between the lock portion and the connection cover, and the cylindrical holding member is held to be non-rotatable relative to the cylindrical body.

A rear wheel steering apparatus for a vehicle includes a housing including a cylinder portion and a connection cover, an electric motor housed in the housing, a speed reduction mechanism housed in the housing, a linear motion mechanism including a nut member and a rod for converting a rotation of the nut member to a linear motion of the rod, the cylinder portion including a stopper portion provided at an inner surface of thereof between the electric motor and the speed reduction mechanism, a cylindrical holding member holding the speed reduction mechanism in the cylinder portion, and a bearing supporting the nut member for allowing the nut member to rotate relative to the cylindrical holding member. The bearing and the cylindrical holding member are sandwiched between the stopper portion and the connection cover and the cylindrical holding member is retained so as not to rotate relative to the cylinder portion.

A displacement detection apparatus for a linear motion mechanism includes a nut member, a rod including elongate grooves elongating in an axial direction of the rod and a through hole, a permanent magnet disposed parallel to the rod, a magnet block made of synthetic resin and including a retaining portion holding the permanent magnet, a pair of leg portions extending from ends of the retaining portion that are spaced apart, and a nut made of metal insert-molded at an intermediate position between the pair of leg portions, and a displacement sensor disposed opposing to the permanent magnet. The pair of leg portions and the nut of the magnet block are disposed in the elongate groove of the rod and the magnet block is fixed to the rod by a bolt screwed to the nut, the bolt penetrating through the through hole extending through the rod.

Growing community of inventors

Anjo, Japan

Shimpei Fujii