Title:
BRUSHLESS DC MOTOR AND CEILING FAN USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/235687
Kind Code:
A1
Abstract:
A brushless DC motor comprising a shaft (3), a stator core (1), a rotor holder (5), a plurality of magnets (6), and a control circuit board (10). The stator core (1) has a plurality of slots arranged in the circumferential direction and is fixed to the shaft (3). The rotor holder (5) has an inner circumferential surface facing the stator core (1). The plurality of magnets (6) are provided on the inner circumferential surface of the rotor holder (5) and are arranged in the circumferential direction. The control circuit board (10) penetrates the shaft (3) and is adjacent to the stator core (1) in the rotation shaft direction. The control circuit board (10) includes at least one hall element that detects the magnetism of the plurality of magnets (6). At least one hall element is held by an element holder inserted into at least one slot among the plurality of slots in the stator core (1).
Inventors:
MATSUMOTO TOSHIHIRO
Application Number:
PCT/JP2018/022514
Publication Date:
December 27, 2018
Filing Date:
June 13, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K29/08; F04D25/08; F04D29/00; H02K11/215
Foreign References:
| JPH08242568A | 1996-09-17 | |||
| JP2016063678A | 2016-04-25 | |||
| JP2009240071A | 2009-10-15 | |||
| JP2014017929A | 2014-01-30 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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