| 摘要 |
A step actuator according to an embodiment includes: a housing; a stator arranged inside the housing; a rotor including a magnet and a nut member; a bearing supporting rotation of the nut member; a screw member that is coupled to the nut member and moves linearly according to the rotation of the nut member; and a mounting member that is fixed to the one side of the housing and is supported to allow linear movement of the screw member. The magnet is arranged in the radial inner side of the stator. The nut member is inserted into and coupled with the magnet, and penetrates and protrudes from one side of the housing. The nut member includes: an end part that penetrates the bearing, and a coupling part that extends from the end part to contact and couple with the bearing. |
