Title:
MOTOR AND BERING OF MOTOR
Document Type and Number:
Japanese Patent JP2015021544
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a brushless motor which reduces a shaft voltage and/or an electric potential difference caused by a shaft voltage and prevents electric corrosion with simple means, in a bearing for supporting a fixing part and a rotary part of the brushless motor.SOLUTION: A brushless DC motor includes a rotor 5 and a stator 12 disposed around the rotor 5. The stator 12 includes a stator core 7 and a coil 4 wound around the stator core in a coil-like manner, and it is configured being integral with mold resin 11 made of thermosetting resin by molding. In the rotor 5, a central axis 1 is supported by bearings 3a, 3b provided at a central part of metal brackets 2a, 2b fixed at both end parts of the stator 12 in a rotatable manner. A rolling element is configured by sintered metal having continuous holes in order to prevent occurrence of arc discharge between a rotation part and a fixing part, and in order to lower dynamic pressure of lubricating oil.
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Inventors:
KUROZUMI SEIJI
NAKANO KEISAKU
YORINO TOMOKO
NAKANO KEISAKU
YORINO TOMOKO
Application Number:
JP2013149257A
Publication Date:
February 02, 2015
Filing Date:
July 18, 2013
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
F16C33/58; F16C19/06; F16C33/32; F16C33/34; F16C33/62; H02K7/08
Attorney, Agent or Firm:
Yoshiaki Tokuda
Nomura Koichi
Nomura Koichi