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Title:
ELECTRIC TOOL
Document Type and Number:
Japanese Patent JP2012254488
Kind Code:
A
Abstract:

To improve the cooling performance mainly of a stator of an electric motor in an electric tool having as a driving source an outer rotor type electric motor provided with a rotor at the outer peripheral side of the stator.

A stator supporting member 14 for supporting a stator 12 with respect to a motor housing 11 is formed of a metal material, and a core of the stator 12 is placed in direct-contact with the stator supporting member 14. Thereby, heat generated in the stator 12 is released to the stator supporting member 14, and its cooling performance is improved.


Inventors:
FUKUOKA TORU
OTA KENICHI
Application Number:
JP2011128041A
Publication Date:
December 27, 2012
Filing Date:
June 08, 2011
Export Citation:
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Assignee:
MAKITA CORP
International Classes:
B25F5/00; B23D45/16; B23D47/12; B25B21/00
Domestic Patent References:
JP2007116818A2007-05-10
JP2004229338A2004-08-12
JP2011079119A2011-04-21
JP2006150571A2006-06-15
JP2006256341A2006-09-28
JP2010201599A2010-09-16
JP2005349699A2005-12-22
JP2004194440A2004-07-08
JP2000517159A2000-12-19
JP2010098816A2010-04-30
JP2011098421A2011-05-19
JP2011098420A2011-05-19
JPS58122804A1983-07-21
JP2009039844A2009-02-26
Attorney, Agent or Firm:
Okada International Patent Office