Title:
ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2017/203754
Kind Code:
A1
Abstract:
An actuator comprising: a motor having a first rotor rotatable in the circumferential direction, around a central axis extending in the vertical direction, and a stator that drives the first rotor; a second rotor rotatable in the circumferential direction around the central axis; and a decelerator that decelerates the rotation of the first rotor and transmits torque to the second rotor, via a bearing. The first rotor has a first cylindrical section extending in the axial direction. The second rotor has a second cylindrical section extending in the axial direction. The second cylindrical section is provided further on the outside in the radial direction than the first cylindrical section. A lubricating material is filled into a filling space including at least part of a space between the outside surface of the first cylindrical section and the inside surface of the second cylindrical section. The actuator also comprises a width-reducing section that reduces the width of the filling space in the radial direction, in at least part of the filling space in the axial direction.
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Inventors:
YAMAUCHI WATARU (JP)
OSUGI SHOZO (JP)
TODA AKIHIRO (JP)
HIRONO TEIICHI (JP)
OMOTO SHOTA (JP)
OSUGI SHOZO (JP)
TODA AKIHIRO (JP)
HIRONO TEIICHI (JP)
OMOTO SHOTA (JP)
Application Number:
PCT/JP2017/004960
Publication Date:
November 30, 2017
Filing Date:
February 10, 2017
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
F16H57/029; F16H1/32; F16H57/08; H02K7/116
Domestic Patent References:
| WO2014203294A1 | 2014-12-24 |
Foreign References:
| JP2001304382A | 2001-10-31 | |||
| JP5197174B2 | 2013-05-15 | |||
| JP2002243000A | 2002-08-28 | |||
| JP2009071919A | 2009-04-02 |
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