# US 2014/0152128 A1 · Stator of rotary electric machine including restricting member for preventing deformation of coil end portions and electric motor including such stator

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0152128 A1
- Document ID: US20140152128A1
- Status: Published application
- Kind: A1
- Application number: 14/088,695
- Filed: 2013-11-25
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Fanuc Corporation
- Applicants: Fanuc Corporation
- Inventors: Shinobu Takano; Yohei Arimatsu
- Web page: https://patentgrep.com/patent/US20140152128A1

## CPC

- H02K 3/38: around winding heads, equalising connectors, or connections thereto
- H02K 3/50: Fastening of winding heads, equalising connectors, or connections thereto
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A stator of a rotary electric machine includes a stator core and coils. The stator core is provided with a plurality of slots extending in an axial direction and being spaced apart from one another in a circumferential direction. The coils are wound around through the slots. The coils include coil end portions which protrude outward in the axial direction from an end surface of the stator core. The stator includes a restricting member situated on an inner side of the coil end portions in the radial direction. The restricting member serves to prevent deformation of the coil end portions inward in the radial direction.

## Claims

### Claim 1

A stator of a rotary electric machine comprising a stator core provided with a plurality of slots extending in an axial direction and being spaced apart from one another in a circumferential direction, and coils wound around through the slots,
wherein the coils comprise coil end portions protruding outward in the axial direction from an end surface of the stator core, and
wherein the stator comprises a restricting member situated on an inner side of the coil end portions in a radial direction, the restricting member being adapted to prevent the coil end portions from being deformed inward in the radial direction.

### Claim 2 (depends on 1)

The stator according to claim 1, wherein the restricting member has a cylindrical shape with a diameter at one end larger than a diameter at another end.

### Claim 3 (depends on 1)

The stator according to claim 1, wherein the restricting member comprises a flange situated at one end of the restricting member, the flange extending outward in the radial direction so as to cover an end of the coil end portions.

### Claim 4 (depends on 1)

The stator according to claim 1, wherein the stator core comprises an attachment mechanism to which a binding member is attached, the binding member being adapted to bind the restricting member and the coil end portions together in the axial direction.

### Claim 5 (depends on 1)

The stator according to claim 1, wherein the coil end portions and the restricting member are covered with a molding resin.

### Claim 6 (depends on 1)

An electric motor comprising the stator according to any one of claim 1, and a rotor that cooperate with the stator.