Title:
ELECTRIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2017/203944
Kind Code:
A1
Abstract:
Provided is an electric actuator (1) which is equipped with a motor (A), a motion conversion mechanism (B), and a bottomed cylindrical housing (2) housing those, wherein the motion conversion mechanism (B) has a screw shaft (33) and a nut member (32) that is rotatably fitted to the periphery of the screw shaft (33) via balls (34), an output member (3) including the screw shaft (33) moves linearly in an axial direction in association with the rotation of the nut member (32), an annular origin positioning member (90) for determining an origin position of the output member (3) is provided between an opening end face (20a1) of the housing (2) and an end face of the output member (3) opposite thereto through engagement of those in an axial direction, and the origin positioning member (90) provides an elastic restoring force in the axial direction.
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Inventors:
MATSUTOU TAKUSHI (JP)
IKEDA YOSHINORI (JP)
NAITOU YUUKI (JP)
IKEDA YOSHINORI (JP)
NAITOU YUUKI (JP)
Application Number:
PCT/JP2017/017157
Publication Date:
November 30, 2017
Filing Date:
May 01, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H25/22; F16C19/06; F16C33/64; F16H25/20; F16H25/24; H02K7/06
Foreign References:
| JP2003329070A | 2003-11-19 | |||
| JP2013126315A | 2013-06-24 | |||
| JP2005170064A | 2005-06-30 | |||
| JP2009156354A | 2009-07-16 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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