Title:
ELECTRIC ACTUATOR AND ATTACHMENT STRUCTURE FOR SAME, AND VALVE BODY DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/006139
Kind Code:
A1
Abstract:
The objective of the present invention is to provide an electric actuator with which it is possible to improve the heat dissipation characteristics of a motor, an attachment structure for the same, and a valve body drive device. More specifically, this electric actuator is provided with a motor having a metal motor case which accommodates a rotor that is integral with a rotating shaft, and a stator, and an outer peripheral surface of which is formed with a cylindrical shape, and a resin base member supporting the motor, wherein: the base member includes a supporting portion to which an end portion of the motor case is fixed, and an outer peripheral surface of which is formed with a columnar shape that is coaxial with the rotating shaft, and a base portion which is formed integrally on the opposite side of the supporting portion to the motor case, and which protrudes further toward the radially outer side than the supporting portion; and a sealing ring is fitted into the outer circumference of the supporting portion.
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Inventors:
YAJIMA KATSUHIDE (JP)
OHKAWA TAKANORI (JP)
SUGURO HIROSHIGE (JP)
OHKAWA TAKANORI (JP)
SUGURO HIROSHIGE (JP)
Application Number:
PCT/JP2020/025785
Publication Date:
January 14, 2021
Filing Date:
July 01, 2020
Export Citation:
Assignee:
NIDEC SANKYO CORP (JP)
International Classes:
H02K5/00; H02K5/04; H02K7/06
Foreign References:
| JP2013106409A | 2013-05-30 | |||
| JP2013207960A | 2013-10-07 | |||
| JP2007028861A | 2007-02-01 | |||
| JP2019004597A | 2019-01-10 | |||
| JP2018050439A | 2018-03-29 | |||
| JP2017101646A | 2017-06-08 |
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