MOTOR DRIVE TYPE LINEAR ACTUATOR

摘要

PROBLEM TO BE SOLVED: To reduce noise and vibration, and reduce energy loss in linearly driving a movable body. SOLUTION: This motor drive type linear actuator is provided with a frame 2 comprising one bracket 2B to rotatably support one end part of a screw shaft 3, and the other bracket 2C to rotatably support the other end part of the screw shaft 3, and hold axial force added from the screw shaft 3 to the other end part side. A first magnetic wheel is provided on one end part of the screw shaft 3. A second magnetic wheel 62 is provided on an output shaft 1b of a motor 1. Outer circumferential surfaces of the first magnetic wheel 61 and the second magnetic wheel 62 are set to be close to each other. One bracket 2B is composed to add the axial force to the screw shaft 3 by attracting the first magnetic wheel 61 by magnetic force of the first magnetic wheel 61. COPYRIGHT: (C)2004,JPO&NCIPI