A structure and An assembly of lead screw and Rear wheel steering system using the same

摘要

According to one embodiment of the present invention, provided is a lead screw structure, which comprises: a screw shaft having a tooth formed on an outer circumferential surface thereof; a nut unit coupled to the screw shaft so that a tooth formed on an inner circumferential surface thereof can be engaged with the tooth of the screw shaft; and a first elastic member disposed on one side in the axial direction of the screw shaft of the nut unit and providing the nut unit with an elastic force in the screw shaft direction, thereby compensating for an interval between the tooth on the outer circumferential surface of the screw shaft and the tooth on the inner circumferential surface of the nut unit.