Title:
ACTUATOR
Document Type and Number:
Japanese Patent JP2011052709
Kind Code:
A
Abstract:
To provide an actuator improving durability as well as transmission efficiency of a ball screw part by suppressing sliding resistance without causing a cost increase.
The nut upper part of a ball screw with a ball screw shaft vertically arranged includes a grease sump, and the ball screw is operated to supply a lubricant sufficiently to a screw part, a nut part and balls. That is, the actuator having the ball screw for converting the turning force of a rotating power source into linear motion, and an output link mechanism, includes the grease sump in the nut upper part of the ball screw with the screw shaft arranged vertically.
More Like This:
| JP2018034521 | POWER STEERING DEVICE |
| WO/2021/113226 | MULTILINER FOR MULTIPLE START BALL NUT THREADS |
| JP2005016582 | VERTICALLY MOVABLE MECHANISM, AND BED |
Inventors:
WADA TOSHIMASA
Application Number:
JP2009199621A
Publication Date:
March 17, 2011
Filing Date:
August 31, 2009
Export Citation:
Assignee:
NSK LTD
International Classes:
F16H25/24; F16H21/16; F16H25/22