| 摘要 |
PROBLEM TO BE SOLVED: To reduce occurrence of noise and striking sound due to a wedge effect occurring on a thread face of a slide portion between a feed screw shaft and a feed nut.SOLUTION: A telescopic actuator includes: a feed screw mechanism 48 comprising a male screw member 112 and a female screw member 114; an output rod 32 displaced by the feed screw mechanism 48; and an elastic bearing 200 supporting the outer peripheral surface of an input flange 86 formed integrally with the male screw member 112. The elastic bearing 200 includes a resin ring in at least a part of which a slit is formed in a circumferential direction, and an O ring that is mounted on the outer diameter surface of the resin ring to impart pressurization.SELECTED DRAWING: Figure 3 |
