Armature and motor on which the armature is mounted
First Claim
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1. An armature formed by winding coils around laminated cores and bending the laminated cores in an annular shape, comprising:
- a plurality of core back parts circularly arranged to form an annular core back, each of the core back part having a tooth projecting toward a center of the annular core back;
coupling portions of the core back, which couple the core back parts neighboring in a circumferential direction of the annular core back and yield at the time of bending;
a plurality of insulators, each of the insulator attached to each of the core back part to cover an inner peripheral face of the core back part and a surface of the tooth, and made of an electrically insulating material; and
coils formed by continually winding a conductor around the teeth over the insulators, the conductor stretching at radially inner positions to the coupling portion of the core back;
wherein;
a side edge in the circumferential direction of the insulator is positioned closely to the neighboring insulator via a gap; and
a width of the gap is smaller than a width of the conductor measured perpendicular to a stretching direction thereof.
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Abstract
An extension part of an insulator covering a part of a coupling portion of a laminated core of an armature is inclined to the inside in the radial direction along the coupling part. A inclined face which is extended inward in the radial direction is formed in the cylindrical part of the armature. By forming the armature in an annular shape, a gap which is almost parallel or narrowed to the inside in the radial direction is formed between neighboring inclined faces. The gap is formed to be smaller than the diameter of a conductor.
16 Citations
8 Claims
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1. An armature formed by winding coils around laminated cores and bending the laminated cores in an annular shape, comprising:
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a plurality of core back parts circularly arranged to form an annular core back, each of the core back part having a tooth projecting toward a center of the annular core back;
coupling portions of the core back, which couple the core back parts neighboring in a circumferential direction of the annular core back and yield at the time of bending;
a plurality of insulators, each of the insulator attached to each of the core back part to cover an inner peripheral face of the core back part and a surface of the tooth, and made of an electrically insulating material; and
coils formed by continually winding a conductor around the teeth over the insulators, the conductor stretching at radially inner positions to the coupling portion of the core back;
wherein;
a side edge in the circumferential direction of the insulator is positioned closely to the neighboring insulator via a gap; and
a width of the gap is smaller than a width of the conductor measured perpendicular to a stretching direction thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification