| 摘要 |
PROBLEM TO BE SOLVED: To provide a steering device capable of preventing or suppressing a variation in steering torque even if a screw shaft of a lack bar is distorted or the like. SOLUTION: A plurality of ball nuts 14 are arranged in the axial direction of a screw shaft 12. The respective ball nuts 14 are connected so as to be relatively displaced in a diameter direction by a spring 18 as a connection member. Thus, the ball nut 14 is radially displaced with respect to the adjacent ball nut 14 according to the distortion state accompanied by the axial movement of the screw shaft 12 even if the screw shaft 12 is distorted. The contact state of the screw shaft 12 and the ball nut 14 is kept constant, and thus, an increase in the movement resistance of the screw shaft 12 caused by a change of the contact state can be prevented or suppressed. Accordingly, the variation in the steering torque generated at a steering handle can be prevented or suppressed. COPYRIGHT: (C)2009,JPO&INPIT
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