Step actuator
AssigneeLG Innotek Co., Ltd.
InventorWoo Jin Hyun
Life of this patent
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Abstract
A step actuator includes a housing, a stator in the housing, a rotor including a magnet provided radially inward of the stator and a nut member inserted into the magnet and protruding through one side of the housing, a bearing rotatably supporting the nut member, a screw member coupled with the nut member to linearly move as the rotor rotates, and a mounting member supported on one side of the housing to support the screw member in such a manner that the screw member is linearly movable. The nut member includes an end portion passing through the bearing and a coupling portion extending from the end portion to couple with the bearing.
Claims6
A step actuator comprising:
- first and second housings;
- a stator including first and second bobbins and first and second yokes;
- a rotor including a magnet and a nut member;
- a bearing rotatably supporting the nut member;
- a screw member coupled with the nut member to linearly move as the rotor rotates;
- a bearing cover coupled with the second housing;
- and
- a mounting member disposed on the bearing cover to support the screw member in such a manner that the screw member is linearly movable,
- wherein the magnet includes a spline hole provided at an inner peripheral surface thereof, and
- wherein the nut member includes a spline provided at an outer peripheral surface thereof and coupled with the spline hole formed in the magnet.
Dependencies are inferred from the claim text.