Title:
ELECTRIC MOTOR ELEMENT, ELECTRIC MOTOR, AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/056480
Kind Code:
A1
Abstract:
This electric motor element includes a rotor configured from the following: a rotor core in which a plurality of punched steel-sheets are stacked in the rotary shaft direction; a magnet disposition hole provided so as to pass through the rotor core; and a bonded magnet which is placed in the magnet disposition hole and which is a permanent magnet. The present invention has a configuration such that the value of the length dimension of the rotor core in the rotary shaft direction thereof is greater than that of the length dimension of the stator core in the rotary shaft direction thereof. The shape of the bonded magnet includes a configuration such that, on a surface thereof on the side facing the stator core, a location near a center section between both ends of the rotor in the shaft direction is in closer proximity to the rotary shaft which holds the rotor than the location of an end of the rotor in the rotary shaft direction.
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Inventors:
OKUMURA YUSUKE
YOSHIKAWA YUICHI
KADO HARUHIKO
OKADA YUKIHIRO
YOKOTE SHIZUKA
OGAWA TAKASHI
YOSHIKAWA YUICHI
KADO HARUHIKO
OKADA YUKIHIRO
YOKOTE SHIZUKA
OGAWA TAKASHI
Application Number:
PCT/JP2016/004348
Publication Date:
April 06, 2017
Filing Date:
September 27, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K1/27; H02K3/02; H02K15/03
Domestic Patent References:
| WO2014013598A1 | 2014-01-23 |
Foreign References:
| JP2014082927A | 2014-05-08 | |||
| JPH05175037A | 1993-07-13 | |||
| JP2014011890A | 2014-01-20 |
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
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