Embedded magnet type motor

Details Embedded magnet type motor Embedded magnet type motor

2008-04-23

2010-06-08

Nguyen, Tran N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156530, C310S156560

Reexamination Certificate

active

07732965

ABSTRACT:
An embedded magnet type motor is disclosed. The rotor core of the motor has radially extending first accommodation holes and V-shaped accommodation holes. Each V-shaped accommodation hole includes a second accommodation hole and a third accommodation hole. A first gap is formed in each first accommodation hole. The first gap is not occupied by the corresponding first magnet. A second gap is formed in each second accommodation hole. The second gap is not occupied by the corresponding second magnet. A third gap is formed in each third accommodation hole at a radially outer portion. The third gap is not occupied by the corresponding third magnet. Each second gap and the adjacent third gap form one V-shaped gap. The angular width θa of each first gap and the angular width θb of each V-shaped gap are determined to satisfy the expression: 0.60<θa/θb<1.60.

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