# US 2021/0344246 A1 · Coil mounting structure

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- Number: US 2021/0344246 A1
- Document ID: US20210344246A1
- Status: Published application
- Kind: A1
- Application number: 17/285,458
- Filed: 2019-10-17
- Published: 2021-11-04
- Earliest claimed: 2018-10-18
- Assignees: Panasonic Intelectual Property Management Co., Ltd.
- Applicants: Panasonic Intelectual Property Management Co., Ltd.
- Inventors: Hajime UKAJI; Mitsuoki HISHIDA
- Web page: https://patentgrep.com/patent/US20210344246A1

## CPC

- H02K 3/18: Windings for salient poles
- H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32)
- H01F 5/00: Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00)
- H02K 1/165: {Shape, form or location of the slots}
- H02K 1/32: with channels or ducts for flow of cooling medium
- H02K 3/12: arranged in slots
- H02K 3/48: in slots
- H02K 1/148: {Sectional cores (H02K1/141 takes precedence)}
- H02K 3/522: {for generally annular cores with salient poles}
- H02K 2203/09: Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
- H02K 2213/03: Machines characterised by numerical values, ranges, mathematical expressions or similar information
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

Inclined surfaces are formed in areas adjacent to a tooth protruding from the inner circumferential surface of the yoke, on both sides in a motor rotation circumferential direction, and the inclined surfaces are inclined or curved toward a protruding direction of the tooth as a distance from the tooth increases in the motor rotation circumferential direction. The conductive wire includes parts extending in the motor rotation circumferential direction on both sides of the tooth in the motor rotational shaft direction in each of first to n-th turns, and bent portions bending in a thickness direction of the conductive wire are formed in the parts so as to align in a winding axis direction through the width of the conductive wire. Portions of the conductive wire on are inclined toward the protruding direction of the associated tooth as the distance from the bent portion increases in the motor rotation circumferential direction.

## Claims

### Claim 1

A coil mounting structure comprising:
a tooth in a columnar shape protruding from an inner circumferential surface of a yoke in a ring shape of a stator of a motor, and
a coil mounted on the tooth, the coil having first to n-th turns (n is an integer of 2 or more) formed by stacking, in a winding axis direction, a plate-shaped conductive wire extending in a shape of a strip and being bent in a width direction, while winding the plate-shaped conductive wire, wherein
inclined surfaces are formed in respective adjacent areas adjacent to the tooth protruding from the inner circumferential surface of the yoke, on both sides in a motor rotation circumferential direction, the inclined surfaces being inclined or curved toward a protruding direction of the tooth as a distance from the tooth protruding increases in the motor rotation circumferential direction,
the conductive wire includes parts extending in the motor rotation circumferential direction on both sides of the tooth in a motor rotational shaft direction in each of the first to n-th turns of the coil, and respective bent portions bent in a thickness direction of the conductive wire are formed in the parts so as to be aligned in a winding axis direction through the entire width of the conductive wire, and
portions of the conductive wire on both sides of each of the bent portions in the motor rotation circumferential direction in each of the first to n-th turns of the coil are inclined toward the protruding direction of the tooth as the distance from the bent portion increases in the motor rotation circumferential direction.

### Claim 2 (depends on 1)

The coil mounting structure of claim 1, wherein
the first to n-th turns of the coil gradually increase in thickness toward the protruding direction of the tooth.