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Title:
LAMINATED CORE
Document Type and Number:
Japanese Patent JP2011147240
Kind Code:
A
Abstract:

To improve cooling efficiency of a laminated core by reducing the usage amount of steel plates.

The laminated core (21) has annular first cores (8) each formed by helically stacking a plurality of first core pieces coupled to each other by first coupling portions; and annular second cores (9) each of which is formed by helically stacking a plurality of second core pieces (911) coupled to each other by second coupling portions and has the outer shape larger than that of the first core. The first and second cores are alternately juxtaposed in a stacking direction.


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Inventors:
TSUMAGARI HIROSHI
MYOJIN IWAO
MAKI KIYOHISA
Application Number:
JP2010004942A
Publication Date:
July 28, 2011
Filing Date:
January 13, 2010
Export Citation:
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Assignee:
YASKAWA ELECTRIC CORP
MITSUI HIGH TEC
International Classes:
H02K1/18
Domestic Patent References:
JPH09205744A1997-08-05
JPH0787714A1995-03-31
JPS58195449A1983-11-14
JPH0257246U1990-04-25
JPS58127834U1983-08-30
JPS62152659U1987-09-28
JPH0644353U1994-06-10
JPH09205744A1997-08-05
JPH0787714A1995-03-31
JP2002238231A2002-08-23
JPS52101902U1977-08-02
JP2009100516A2009-05-07
JP2005168128A2005-06-23
Attorney, Agent or Firm:
Shohei Oguri
Hironori Honda
Toshimitsu Ichikawa



 
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