Title:
INDUCTION SYNCHRONOUS MOTOR
Document Type and Number:
WIPO Patent Application WO/2014/167807
Kind Code:
A1
Abstract:
An induction synchronous motor according to the present invention includes a stator (30), a rotor (1), and a bearing (11). A rotor core (2) of the rotor (1) includes a recess (17) in an upper surface located in the direction of a shaft center (10). The recess (17) includes an inner surface facing the surface of a rotary shaft (16) for a depth (D) from the upper surface. When the bearing (11) is attached to the rotary shaft (16), the recess (17) faces a cylindrical part (11a) via a gap (18). A permanent magnet (4) buried in the rotor core (2) is configured such that the length (L1) of the permanent magnet (4) is shorter than the length (L2) of the rotor core (2) in the direction of the shaft center (10). The permanent magnet (4) is positioned with the upper end surface thereof located deeper than D / 2 from the upper surface.
Inventors:
OZAKI IKUO
TAMAMURA SHUHEI
TAMAMURA SHUHEI
Application Number:
PCT/JP2014/001933
Publication Date:
October 16, 2014
Filing Date:
April 03, 2014
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H02K1/27; H02K17/16
Foreign References:
| JP2012082783A | 2012-04-26 | |||
| JP2000134882A | 2000-05-12 | |||
| JP2009195055A | 2009-08-27 | |||
| JP2009027842A | 2009-02-05 | |||
| JP2001037126A | 2001-02-09 | |||
| JP2008199833A | 2008-08-28 |
Attorney, Agent or Firm:
TOKUDA, Yoshiaki et al. (JP)
Yoshiaki Tokuda (JP)
Yoshiaki Tokuda (JP)
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