ACTUATOR, STATOR, MOTOR, ROTATIONAL-TO-LINEAR MOTION CONVERSION MECHANISM, AND LINEAR ACTUATOR

摘要

An actuator, a stator, a motor, a rotational-to-linear motion conversion mechanism, and a linear actuator are provided. The motor, the actuator, and the linear actuator at least include a screw shaft and a nut. The screw shaft is a rod-like member, and at least a part of the surface of the screw shaft has a thread. The nut is screwed onto the thread on the screw shaft, and moves the screw shaft in a linear motion direction that is a direction in parallel with a rotational center. The stator, the motor, the actuator, and the linear actuator can at least convert a rotational motion into a linear motion.

主权项

1. An actuator comprising:
a stator including a magnetizing coil and a stator core; a housing on which the stator is fixed; a first rotor that is positioned radially internal to the stator and is rotated relatively to the stator; a screw shaft that is a rod-like member positioned at rotational center of the first rotor, at least a part of a surface of the screw shaft having a thread; a nut that is screwed onto the thread of the screw shaft and rotates with the first rotor to move the screw shaft in a linear motion direction that is a direction in parallel with the rotational center of the first rotor; and a second rotor that is positioned radially external to the stator and is rotated relatively to the stator.