# US 2013/0154433 A1 · Stator and protecting member for stator

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- Number: US 2013/0154433 A1
- Document ID: US20130154433A1
- Status: Published application
- Kind: A1
- Application number: 13/720,207
- Filed: 2012-12-19
- Published: 2013-06-20
- Earliest claimed: 2011-12-20
- Assignees: Sanyo Denki Co., Ltd.
- Inventors: Kouji Nakatake; Yukio Miura; Masaaki Ohashi; Zhang Hong
- Web page: https://patentgrep.com/patent/US20130154433A1

## CPC

- H02K 3/345: {between conductor and core, e.g. slot insulation}
- H02K 3/325: {for windings on salient poles, such as claw-shaped poles}
- H02K 3/522: {for generally annular cores with salient poles}
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

There is provided a stator that can suppress degradation in insulating performance and electrical strength performance, shorten a work time, and improve winding efficiency and heat radiation. The stator 1 includes a yoke part 20 formed to be annular, a plurality of tooth parts 30 protruding from the yoke part 20 in an inward direction perpendicular to an axial direction O of a rotor when the rotor is arranged in the yoke part 20, and protecting members 40 each of which is attached to both end surfaces of the tooth part 30 in the axial direction O to protect a corner of the tooth part 30. The protecting members 40 have a length in a slot 38 between the tooth parts 30 shorter than a half of an entire length of the tooth part 30 in the axial direction.

## Claims

### Claim 1

A stator comprising:
a yoke part formed to be annular;
a plurality of tooth parts protruding from the yoke part in an inward direction perpendicular to an axial direction of a rotor when the rotor is arranged in the yoke part; and
a protecting member attached to both end surfaces of one of the tooth parts in the axial direction to protect a corner of one of the tooth parts, the protecting member having a length in a slot between the tooth parts, shorter than a half of an entire length of the tooth parts in the axial direction.

### Claim 2 (depends on 1)

The stator according to claim 1, wherein the protecting member is located only outer side of the tooth parts in the axial direction.

### Claim 3 (depends on 1)

The stator according to claim 1, wherein the protecting member is formed to have U-shape bridging both slots adjacent to the tooth part, and end portions of the protecting member are located in the slots respectively.

### Claim 4 (depends on 1)

The stator according to claim 1, wherein the yoke part and the tooth parts are formed by stacking a plurality of steel plates.

### Claim 5

A protecting member for a stator, being attached to the stator including a yoke part formed to be annular, and including a plurality of tooth parts protruding from the yoke part in an inward direction perpendicular to an axial direction of a rotor when the rotor is arranged in the yoke part,
the protecting member being attached to both end surfaces of one of the tooth parts in the axial direction to protect a corner of one of the tooth parts, the protecting member having a length in a slot between the tooth parts, shorter than a half of an entire length of the tooth parts in the axial direction.