Title:
ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/042989
Kind Code:
A1
Abstract:
Provided is an electric drive device in which heat-dissipating sections (15A) (15B) that transfer at least heat generated by a power supply circuit unit (17) and power conversion circuit units (16) to a motor housing (11) are formed on an end surface section (15) of the motor housing (11) on the opposite side from an output section of a rotating shaft (23) of an electric motor. In addition, a watertight lid member (35) that covers a through hole (41) through which the rotating shaft passes and the end of the rotating shaft (23) from the exterior is attached to the end surface section (15) around the through hole (41), and a waterproof breathable membrane (44) that prevents the passage of moisture while allowing the passage of air and water vapor is provided to part of the watertight lid member.
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Inventors:
KANAZAWA TAKURO (JP)
HAMADA KEIJI (JP)
MOTODA HARUAKI (JP)
HAMADA KEIJI (JP)
MOTODA HARUAKI (JP)
Application Number:
PCT/JP2017/027590
Publication Date:
March 08, 2018
Filing Date:
July 31, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02K5/10; B60R16/02; B62D5/04; H02K5/22; H02K11/33
Domestic Patent References:
| WO2016117144A1 | 2016-07-28 |
Foreign References:
| JP2015154673A | 2015-08-24 | |||
| JPH0210759U | 1990-01-23 | |||
| JP2016062953A | 2016-04-25 | |||
| JP2017051027A | 2017-03-09 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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