Armature, motor using the armature, and disk drive device...

Details Armature, motor using the armature, and disk drive device... Armature, motor using the armature, and disk drive device...

2007-01-24

2009-12-01

Nguyen, Tran N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C360S099080

Reexamination Certificate

active

07626305

ABSTRACT:
An armature core of an electric motor includes a core plate having a plurality of tooth portions arranged circumferentially about a center axis and extending in a radial direction, and a supporting ring portion supporting the plurality of the tooth portions along outer circumferential surfaces thereof. Each tooth portion includes a wire-wound portion on which a coil is arranged, a tip portion at a radially innermost portion of each tooth portion, and an inclined connecting portion connecting the tip portion and the wire-wound portion. The connecting portion has a width in a circumferential direction greater than a width of the wire-wound portion but smaller than a width of the tip portion.

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