Electric linear motion actuator
AssigneeNtn Corporation
InventorYui MASUDA
Life of this patent
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Abstract
The electric linear motion actuator includes an electric motor, a linear motion mechanism configured to convert rotary motion of the electric motor to linear motion of a linear motion part via a rotation input-output shaft, and a housing holding the linear motion mechanism. The electric motor includes a stator and a rotor which are arranged such that the directions of magnetic poles that generate interlinkage flux contributing to a motor torque are parallel with a rotation axis of the electric motor. The stator is arranged so as to be coupled with an axial end surface of the housing. The rotor is arranged so as to have a space, in the axial direction, from the torque generating surface of the stator, and the rotor is fixed to the rotation input-output shaft of the linear motion mechanism.
Claims5
An electric linear motion actuator comprising:
- an electric motor;
- a linear motion mechanism having a rotation input-output shaft and being configured to convert rotary motion of the electric motor to linear motion of a linear motion part by use of the rotation input-output shaft;
- and
- a housing holding the linear motion mechanism, wherein
- the electric motor is provided with a stator and a rotor which are arranged such that directions of magnetic poles that generate interlinkage flux contributing to a motor torque are parallel with a rotation axis of the electric motor,
- the stator is arranged so as to be coupled with an axial end surface of the housing, and
- the rotor is arranged so as to have a space, in an axial direction, from a torque generating surface of the stator, and the rotor is fixed to the rotation input-output shaft of the linear motion mechanism.
Dependencies are inferred from the claim text.