Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BRUSHLESS DC MOTOR AND BLOWER DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/199398
Kind Code:
A1
Abstract:
An outer rotor type brushless DC motor is provided with: a stator core around which a coil is wound; a shaft fixed to the central portion of the stator core; a bearing having an inner ring fixed to the shaft; a rotor yoke (5) equipped with a plurality of magnets (6) in a circumferential direction of the inner circumferential surface facing the stator core fixed to the outer ring of the bearing; a first holding ring (10a) located at the upper portion of the shaft in the axial direction and having projection portions (14a) for holding the upper end portions of the magnets (6) in the circumferential direction; and a second holding ring (10b) located at the lower portion of the shaft in the axial direction and having projection portions (14b) for holding the lower end portions of the magnets (6) in the circumferential direction.

Inventors:
MATSUMOTO, Toshihiro
MURAO, Akira
Application Number:
JP2016/002734
Publication Date:
December 15, 2016
Filing Date:
June 07, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H02K21/22; H02K1/22
Domestic Patent References:
WO2014115501A12014-07-31
Foreign References:
JPH02188693A1990-07-24
JP2008118757A2008-05-22
JPH08116634A1996-05-07
JP2009161045A2009-07-23
JP2013247763A2013-12-09
CN103730995A2014-04-16
CN102842982A2012-12-26
Attorney, Agent or Firm:
KAMATA, Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
Download PDF: