MOTOR
First Claim
Patent Images
1. A motor comprising:
- a stator including;
a stator core including a core back having a substantially circular shape centered on a center axis, and a plurality of tooth portions extending radially inwardly from the core back and arranged in a circumferentially spaced manner;
an insulator covering at least a portion of the stator core so as to insulate at least the portion of the stator core; and
a coil defined by a multilayer structure of a wire wound around each of the tooth portions via the insulator; and
a bus bar arranged axially above the stator and including;
a conductor plate having a plurality of terminals to which an end portion of the wire is to be connected; and
a plate support supporting the conductor plate and having an axially lower surface, a portion of which faces the coil via a space defined therebetween;
whereinthe wire includes a crossover wire portion at which the wire extracted from the coil extends in the circumferential direction; and
an axial height of the space defined between the portion of the lower surface of the plate support and the coil is greater than a diameter of the wire.
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Accused Products
Abstract
A motor includes a stator and a bus bar supported axially above the stator. The bus bar includes a concave portion arranged in a lower surface thereof facing toward coils of the stator. In a gap defined between the coil and the concave portion, a portion of the wire extracted from the coil and wound in the circumferential direction (i.e., a crossover wire portion) is accommodated. The bus bar includes a wire-positioning hole through which the wire is led to a terminal to be connected with the wire.
63 Citations
19 Claims
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1. A motor comprising:
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a stator including; a stator core including a core back having a substantially circular shape centered on a center axis, and a plurality of tooth portions extending radially inwardly from the core back and arranged in a circumferentially spaced manner; an insulator covering at least a portion of the stator core so as to insulate at least the portion of the stator core; and a coil defined by a multilayer structure of a wire wound around each of the tooth portions via the insulator; and a bus bar arranged axially above the stator and including; a conductor plate having a plurality of terminals to which an end portion of the wire is to be connected; and a plate support supporting the conductor plate and having an axially lower surface, a portion of which faces the coil via a space defined therebetween;
whereinthe wire includes a crossover wire portion at which the wire extracted from the coil extends in the circumferential direction; and an axial height of the space defined between the portion of the lower surface of the plate support and the coil is greater than a diameter of the wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 18, 19)
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8. A motor comprising:
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a stator including; a stator core including a core back having a substantially circular shape centered on a center axis, and a plurality of tooth portions radially inwardly extending from the core back and arranged in a circumferentially spaced manner; an insulator covering at least a portion of the stator core so as to insulate at least the portion of the stator core; and a coil defined by a multilayer structure of a wire wound around each of the tooth portions via the insulator; and a bus bar arranged axially above the stator and including; a conductor plate having a plurality of terminals to which an end portion of the wire is to be connected; a plate support supporting the conductor plate and having an axially lower surface, a portion of which faces the coil via a space defined therebetween; a plurality of leg portions arranged in a circumferentially spaced manner and positioning the plate support axially above the stator; and a wire positioning portion arranged at a radially outside portion of the plate support;
whereinone end of the wire is inserted into the wire positioning portion to set a position from which the wire is led axially upward of the plate support. - View Dependent Claims (9, 10, 11, 12)
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13. A motor comprising:
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a stator including; a stator core including a core back having a substantially circular shape centered on a center axis, and a plurality of tooth portions radially inwardly extending from the core back and arranged in a circumferentially spaced manner; an insulator covering at least a portion of the stator core so as to insulate at least the portion of the stator core; and a coil defined by a multilayer structure of a wire wound around each of the tooth portions via the insulator; and a bus bar arranged axially above the stator, and including; a conductor plate having a plurality of terminals to which an end portion of the wire is to be connected and a body portion connecting a plurality of the terminals; and a plate support having in an axially upper surface an insertion groove which supports the conductor plate therein and a axially lower surface, a portion of which faces the coil via a space defined therebetween;
whereinan axial depth of the insertion groove is greater than an axial height of the body portion of the conductor plate, and the insertion groove has a portion where a width thereof in the radial direction is narrower than a thickness of the body portion in the radial direction. - View Dependent Claims (14, 15, 16, 17)
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Specification