H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/109, 310/90
H02K 1/16 (2006.01) H02K 1/26 (2006.01) H02K 1/30 (2006.01) H02K 1/32 (2006.01) H02K 3/12 (2006.01) H02K 3/32 (2006.01)
Patent
CA 2023234
ABSTRACT OF THE DISCLOSURE An electric rotating machine including a rotor having a spider arm which is fixedly mounted on a substantially vertical shaft and has arms extending radially outwardly from the shaft, and an annular rotor rim fixedly mounted on distail ends of the arms of the spider arm. The laminated core is fixedly mounted on an outer periphery of the rotor rim, and is composed of a plurality of fan-shaped thin core plates of steel laminated and arranged in an annular shape. The slot grooves are formed in an outer periphery of the core plates. The rotor rim is composed of laminated rim members each made of an annular thick steel plate, and rim engaging grooves are formed in an outer periphery of the rim member at equal intervals. The core plate has core engaging grooves opposed to the rim engaging grooves, respectively, in such a manner that the number of complete core engaging grooves is two. An axially- extending connecting key is fitted in each mating pair of core engaging groove and rim engaging groove to fix the laminated core to the rotor rim. The following relation being established: 0.5 x L ? W ? 2.0 x L where "W" represents a width (length) of the fan-shaped core plate along its outer periphery, and "L" represents a width of the fan-shaped core plate extending between its inner and outer peripheries.
Hagiya Koshi
Hakuta Shinsaku
Kayukawa Shigehiro
Kita Eizo
Kuzusaka Satoshi
Hitachi Ltd.
Kirby Eades Gale Baker
The Kansai Electric Power Co. Inc.
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