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Title:
ELECTRIC POWER TOOL AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2013039653
Kind Code:
A
Abstract:

To provide an electric power tool in which the dustproof performance of a circuit board or a stator coil is improved and the cooling capacity of the circuit board is secured, and to provide a method for manufacturing the electric power tool.

The electric power tool includes a brushless motor for driving a tip tool. The brushless motor has a cylindrically-formed stator 31, a rotor arranged in the stator 31 and a motor drive circuit device 33 connected to the stator 31. The stator 31 has a coil 31B to be connected electrically to the motor drive circuit device 33. The coil 31B is covered with a coating material 31D and the motor drive circuit device 33 is covered with an insulation cover member 33D. The method for manufacturing the electric power tool is also provided.


Inventors:
NISHIKAWA TOMOMASA
HARADA TETSUSUKE
UCHIDA HIROKI
NAKANO YOSHIHIRO
TSUNODA YUKI
SUKEGAWA KATSUAKI
MORITA KAZUHIKO
Application Number:
JP2011179827A
Publication Date:
February 28, 2013
Filing Date:
August 19, 2011
Export Citation:
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Assignee:
HITACHI KOKI KK
International Classes:
B25F5/00
Domestic Patent References:
JP2010069598A2010-04-02
JP2010099823A2010-05-06
JP2009214260A2009-09-24
JP2007143324A2007-06-07
JP2011062803A2011-03-31
JP2007116767A2007-05-10
JP2007082366A2007-03-29
JP2010081744A2010-04-08
JPH02136046A1990-05-24
JP2010238929A2010-10-21
JP2005048100A2005-02-24
JP2009214260A2009-09-24
JP2010264534A2010-11-25
JP2010260152A2010-11-18
JP2007124458A2007-05-17
Foreign References:
WO2010143379A12010-12-16
Attorney, Agent or Firm:
Kazuhiro Kitazawa
Shin Koizumi
Akiko Ichikawa
Kunihiko Wakabayashi



 
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