Rotor, and torque sensor and electronic power steering system including the same
AssigneeLG Innotek Co., Ltd.
InventorChang Hwan LEE
Life of this patent
Estimating the term…
Abstract
The present invention relates to a rotor including a shaft sleeve having a shaft sleeve main body and a stopper formed to protrude outward from an end portion of the shaft sleeve main body; a magnet disposed on an outer circumferential surface of the shaft sleeve and a lower portion thereof is supported by the stopper; and a fixing part which fixes an upper portion of the magnet, and a torque sensor and an electronic power steering system including the same. Due to the above structure, a broken magnet is prevented from deviating even when a magnet is broken.
Claims20
A rotor comprising:
- a shaft sleeve;
- a magnet disposed on an outer circumferential surface of the shaft sleeve;
- and
- a fixing member disposed in a groove formed in the magnet,
- wherein the shaft sleeve comprises a shaft sleeve main body and a first protrusion part protruded outward from an end portion of the shaft sleeve main body, and
- wherein a lower portion of the magnet is in contact with the first protrusion part.
A torque sensor comprising:
- a housing;
- a stator disposed inside the housing;
- and
- a rotor disposed inside the stator,
- wherein the rotor comprises:
- a shaft sleeve;
- a magnet disposed on an outer circumferential surface of the shaft sleeve;
- and
- a fixing member disposed in a groove formed in the magnet,
- wherein the shaft sleeve comprises:
- a shaft sleeve main body and a first protrusion part protruded outward from an end portion of the shaft sleeve main body, and
- wherein a lower portion of the magnet is in contact with the first protrusion part.
An electronic power steering system comprising:
- a steering shaft;
- and
- a torque sensor,
- wherein the torque sensor comprises:
- a housing;
- a stator disposed inside the housing;
- and
- a rotor disposed inside the stator,
- wherein the rotor comprises:
- a shaft sleeve;
- a magnet disposed on an outer circumferential surface of the shaft sleeve;
- and
- a fixing member disposed in a groove formed in the magnet,
- wherein the shaft sleeve comprises:
- a shaft sleeve main body and a first protrusion part protruded outward from an end portion of the shaft sleeve main body,
- wherein a lower portion of the magnet is in contact with the first protrusion part, and
- wherein the shaft sleeve of the rotor is connected to the steering shaft.
Dependencies are inferred from the claim text.