Abstract: 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.

Abstract: 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.

Abstract: A rear wheel steering apparatus for a vehicle includes a housing including a cylinder portion and a casing, a linear motion mechanism including a nut member and a rod, the casing including at least one opening portion that opens in parallel to the rod and a communication hole provided separately from the opening portion, the casing positioned surrounding the rod extending from the cylinder portion and being fixed to the cylinder portion, a cover member joined to the casing to seal the opening portion of the casing, a controller housed in the casing, a power line and a signal line electrically connected to the controller in the casing, and a thermal shrinkage tube surrounding the power line and the signal line to retain thereof. The power line and the signal line are liquid-tightly supported in the communication hole of the casing via the thermal shrinkage tube.

Abstract: A rear wheel steering apparatus for a vehicle includes a housing including a cylinder portion and a casing, a linear motion mechanism including a nut member and a rod, the casing including at least one opening portion that opens in parallel to the rod and a communication hole provided separately from the opening portion, the casing positioned surrounding the rod extending from the cylinder portion and being fixed to the cylinder portion, a cover member joined to the casing to seal the opening portion of the casing, a controller housed in the casing, a power line and a signal line electrically connected to the controller in the casing, and a thermal shrinkage tube surrounding the power line and the signal line to retain thereof. The power line and the signal line are liquid-tightly supported in the communication hole of the casing via the thermal shrinkage tube.

Abstract: 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.

Abstract: 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.