Title:
ELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2018/123564
Kind Code:
A8
Abstract:
Provided is an electric actuator (1) formed by serially arranging: a drive section (2) having an electric motor (7); and a motion conversion mechanism (3) for converting the rotational motion of the drive section (2) into rectilinear motion. The motion conversion mechanism (3) has: a nut (30) rotated by the rotational motion of the drive section (2); and a threaded shaft (31) which moves rectilinearly as the nut (30) rotates. An inner member (N) and an outer member (M), which are connected so as to be capable of transmitting the rotational torque of the drive section (2), are provided in the torque transmission path between the drive section (2) and the motion conversion mechanism (3). The inner member (N) is loosely fitted to the inner perimeter of the outer member (M). The outer member (M) is a planetary gear carrier (51) constituting a speed reducer (8), and the inner member (N) can be constituted of the nut (30).
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Inventors:
SHIMIZU TATSUNORI (JP)
Application Number:
PCT/JP2017/044575
Publication Date:
May 31, 2019
Filing Date:
December 12, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H25/20; F16D1/02; F16H1/28; F16H25/24; H02K7/06; H02K7/116
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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