Step actuator
AssigneeLG Innotek Co., Ltd.
InventorWoo Jin Hyun
Life of this patent
Estimating the term…
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.
Claims13
A step actuator comprising:
- a housing;
- a stator disposed in the housing and including a bobbin;
- a rotor including a magnet and a nut member coupled with the magnet;
- and
- a screw member coupled with the nut member to move in a first direction and a second direction,
- wherein the bobbin comprises a protrusion pipe protruding in the second direction from a bottom plate of the bobbin, and
- wherein the protrusion pipe of the bobbin is disposed between a portion of the nut member and a portion of the screw member in a radial direction perpendicular to the second direction.
A step actuator comprising:
- a housing;
- a stator disposed in the housing and including a bobbin;
- a rotor including a magnet and a nut member coupled with the magnet;
- and
- a screw member coupled with the nut member to move in a first direction and a second direction,
- wherein the bobbin comprises a protrusion pipe protruding in the second direction from a bottom plate of the bobbin,
- wherein a portion of the protrusion pipe of the bobbin is disposed in the nut member, and
- wherein the portion of the protrusion pipe of the bobbin is overlapped with the screw member and the nut member in a radial direction perpendicular to the first direction.
A step actuator comprising:
- a housing;
- a stator disposed in the housing and including a bobbin;
- a rotor including a magnet and a nut member coupled with the magnet;
- and
- a screw member coupled with the nut member to move in a first direction and a second direction,
- wherein the bobbin comprises a protrusion pipe protruding in the second direction from a bottom plate of the bobbin,
- wherein the protrusion pipe of the bobbin is disposed between a portion of the nut member and a portion of the screw member in a radial direction perpendicular to the second direction,
- 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.