Motor and Armature Manufacturing Method
First Claim
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1. An inner-rotor electric motor comprising:
- a stationary section having an armature, the armature furnished with a core formed by laminating a plurality of thin sheets;
a rotary section having a field magnet, for generating between itself and said armature torque centering on a predetermined center axis; and
a bearing mechanism for rotatably supporting, with the center axis as enter, the rotary section with respect to the stationary section;
said armature comprising;
a plurality of teeth disposed with the teeth fore edges directed toward the center axis, in a radial pattern with the center axis as center, a support ring for supporting said plurality of teeth along their outer side, a tooth insulator covering at least the lateral sides of said plurality of teeth, said tooth insulator including a top member attached to said plurality of teeth over their upper end in the orientation paralleling the center axis, and a bottom member attached to said plurality of teeth over their lower end in the orientation paralleling the center axis, wherein said top member and said bottom member interlink along the orientation paralleling the center axis, coils in which conductors are wound over said tooth insulator, around said plurality of teeth, and a plurality of outer-side insulators interdigitated with the plural teeth and therein covering the inner circumferential surface of the support ring, said outer-side insulators for electrically isolating the exterior side of said coils from said support ring.
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Abstract
An insulator covering the teeth (31) of an armature (3) in an inner-rotor motor is composed of a tooth insulator (321), outer-side insulator (322), upper-end insulator (323), and lower-end insulator (324). The tooth insulator (321) is composed of substantially annular top and bottom members that are assembled from above and below to the teeth (31).
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Citations
18 Claims
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1. An inner-rotor electric motor comprising:
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a stationary section having an armature, the armature furnished with a core formed by laminating a plurality of thin sheets;
a rotary section having a field magnet, for generating between itself and said armature torque centering on a predetermined center axis; and
a bearing mechanism for rotatably supporting, with the center axis as enter, the rotary section with respect to the stationary section;
said armature comprising;
a plurality of teeth disposed with the teeth fore edges directed toward the center axis, in a radial pattern with the center axis as center, a support ring for supporting said plurality of teeth along their outer side, a tooth insulator covering at least the lateral sides of said plurality of teeth, said tooth insulator including a top member attached to said plurality of teeth over their upper end in the orientation paralleling the center axis, and a bottom member attached to said plurality of teeth over their lower end in the orientation paralleling the center axis, wherein said top member and said bottom member interlink along the orientation paralleling the center axis, coils in which conductors are wound over said tooth insulator, around said plurality of teeth, and a plurality of outer-side insulators interdigitated with the plural teeth and therein covering the inner circumferential surface of the support ring, said outer-side insulators for electrically isolating the exterior side of said coils from said support ring. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of manufacturing an inner-rotor armature, the method comprising:
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(a) a step of preparing a plurality of teeth disposed with the teeth fore edges directed toward a predetermined center axis, in a radial pattern with the center axis as center, and with the fore edges temporarily joined together by a linking member;
(b) a step of attaching a tooth insulator to the lateral sides of the plurality of teeth, wherein said step (b) includes a step of attaching a center-axis-wise linking top member to the plurality of teeth over their upper end in the orientation paralleling the center axis, and a step of attaching a center-axis-wise linking bottom member to the plurality of teeth over their lower end in the orientation paralleling the center axis;
(c) a step of forming coils by winding conductors over the tooth insulator, around the plurality of teeth;
(d) a step of installing in an interdigitated fashion between the plural teeth a plurality of outer-side insulators for covering between the plural teeth the exterior side of the coils;
(e) a step of attaching to the plurality of teeth a support ring for supporting the plurality of teeth along their outer side; and
(f) a step of removing the linking member linking the fore edges of the plural teeth. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An inner-rotor motor armature having a core formed by laminating a plurality of thin sheets, the armature comprising:
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a plurality of teeth disposed with the teeth fore edges directed toward the center axis, in a radial pattern with a center axis as center;
a support ring for supporting the plurality of teeth along their outer side;
a tooth insulator covering at least the lateral sides of the plurality of teeth, said tooth insulator including a top member attached to said plurality of teeth over their upper end in the orientation paralleling the center axis, and a bottom member attached to said plurality of teeth over their lower end in the orientation paralleling the center axis, wherein said top member and said bottom member interlink along the orientation paralleling the center axis;
coils in which conductors are wound over said tooth insulator, around said plurality of teeth; and
a plurality of outer-side insulators interdigitated with the plural teeth and therein covering the inner circumferential surface of the support ring, said outer-side insulators for electrically isolating the exterior side of said coils from said support ring. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification