# US 2014/0152131 A1 · Wiring structure of stator coil

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- Number: US 2014/0152131 A1
- Document ID: US20140152131A1
- Status: Published application
- Kind: A1
- Application number: 14/091,616
- Filed: 2013-11-27
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Sanyo Denki Co., Ltd.
- Applicants: Sanyo Denki Co., Ltd.
- Inventors: Yukio Miura; Masaaki Oohashi; Kouji Nakatake
- Web page: https://patentgrep.com/patent/US20140152131A1

## CPC

- H02K 3/38: around winding heads, equalising connectors, or connections thereto
- H02K 3/522: {for generally annular cores with salient poles}
- H02K 2203/03: Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

Electrical insulation properties of winding start ends or terminal ends of insulating coating electric wires of coils wound around polar teeth of a stator core are improved, and creeping and spatial distances for electrical insulation are secured. Wall portions which project toward an interior of a radial direction or an exterior of an axial direction of a stator core and which have electrical insulation properties are formed in an inner peripheral portion of the stator core of a motor, groove portions are formed in the wall portions and winding start ends or terminal ends of insulating coating electric wires of coils are arranged in the groove portions.

## Claims

### Claim 1

A wiring structure of a stator coil wherein
a wall portion which projects to an interior of a radial direction or an exterior of an axial direction of a stator core and which has an electrical insulation property is formed in an inner peripheral portion of the stator core of a motor, and a groove portion is formed in the wall portion, and
a winding start end or terminal end of an insulating coating electric wire of the coil is arranged in the groove portion.

### Claim 2 (depends on 1)

The wiring structure of the stator coil according to claim 1, wherein the wall portion is provided in an insulating resin molded item which insulates the stator core and the coil so as to project toward the interior of the radial direction or the exterior of the axial direction of the stator core.

### Claim 3 (depends on 1)

The wiring structure of the stator coil according to claim 1, wherein
the wall portion is arranged between poles of the coil, and
the groove portion is opened toward the interior of the radial direction of the stator core.

### Claim 4 (depends on 1)

The wiring structure of the stator coil according to claim 1, wherein the wall portion has a hook shape configured to fix a wiring substrate which connects an insulating coating electric wire of the coil and a power line.

### Claim 5 (depends on 1)

The wiring structure of the stator coil according to claim 1, wherein an opening of the groove portion in which a start end or a terminal end of an insulating coating electric wire of the coil is arranged is blocked by an electrical insulating member.

### Claim 6 (depends on 5)

The wiring structure of the stator coil according to claim 5, wherein the electrical insulating member which blocks the opening of the groove portion is a wiring substrate which connects the insulating coating electric wire of the coil and a power line.

### Claim 7 (depends on 1)

The wiring structure of the stator coil according to claim 1, wherein an upper groove is formed to continue to the groove portion and orthogonal to the wall portion.

### Claim 8 (depends on 1)

The wiring structure of the stator coil according to claim 1, wherein a jumper wire of the coil which forms a phase of the motor is arranged on a base end of the wall portion.