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Title:
ELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2017/169935
Kind Code:
A1
Abstract:
Provided is an electric actuator 1 equipped with a motor A and a motion converting mechanism B, the motion converting mechanism B being provided with a planetary gear reducer 10 as a gear reducer for reducing the speed of the rotation of a rotor 24 of the motor A and outputting said rotation, a threaded shaft 33 disposed coaxially with the center of rotation of the rotor 24, and a nut member 32 rotatably fitted to the outer periphery of the threaded shaft 33, and the threaded shaft 33 moving linearly in the axial direction with the rotation of the nut member 32. The rotor 24 is provided with a rotor inner member 26 having the nut member 32, which is coupled to an output member of the planetary gear reducer 10 in a manner enabling torque transmission, disposed in the inner periphery thereof. The threaded shaft 33 is formed in a hollow shape having a through hole 33b which opens at both end faces of the shaft in the axial direction.

Inventors:
MATSUTOU TAKUSHI (JP)
IKEDA YOSHINORI (JP)
NAITOU YUUKI (JP)
Application Number:
JP2017/011060
Publication Date:
October 05, 2017
Filing Date:
March 17, 2017
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (?5500003, JP)
International Classes:
F16H25/20; F16C19/50; F16C35/12; F16H25/22; F16H25/24; H02K7/06
Foreign References:
JP2015149799A2015-08-20
JP2003247576A2003-09-05
JPS62114202U1987-07-21
JP2005170064A2005-06-30
JPS6131757A1986-02-14
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (?5410059, JP)
Kunihiko Shiromura (?5410059, JP)
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