Title:
ELECTRIC MOTOR, FAN, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2024/089836
Kind Code:
A1
Abstract:
An electric motor (1) comprises: a first rolling bearing (41) that has a first inner ring (41A) and a first outer ring (41B); a second rolling bearing that has a second inner ring and a second outer ring; a shaft (22) rotatably supported by the first and second rolling bearings (41, 42); a rotor core (21) fixed to the shaft (22); a stator core (31); and a drive circuit board (5). The drive circuit board (5) is disposed on a side opposite to the rotor core (21) across the first roller bearing (41). The first and second outer rings (41B, 42B) are electrically insulated from each other. The first outer ring (41B) and the stator core (31) are electrically insulated from each other. The shortest distance (a1) from the first outer ring (41B) to the rotor core (21) is shorter than the shortest distance (b1) from the first outer ring (41B) to the drive circuit board (5).
Inventors:
MATSUOKA ATSUSHI (JP)
TAKAHASHI RYOGO (JP)
WATANABE TAKANORI (JP)
TAKAHASHI RYOGO (JP)
WATANABE TAKANORI (JP)
Application Number:
PCT/JP2022/040111
Publication Date:
May 02, 2024
Filing Date:
October 27, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K7/08; H02K11/30
Foreign References:
| JP2008245344A | 2008-10-09 | |||
| JP2013055757A | 2013-03-21 |
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
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