# US 2019/0173341 A1 · Motor

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- Number: US 2019/0173341 A1
- Document ID: US20190173341A1
- Status: Published application
- Kind: A1
- Application number: 15/962,292
- Filed: 2018-04-25
- Published: 2019-06-06
- Earliest claimed: 2017-12-02
- Assignees: Hyundai Motor Company; Kia Motors Corporation
- Applicants: Hyundai Motor Company; Kia Motors Corporation
- Inventors: Jungwoo Lee; WoongChan Chae
- Web page: https://patentgrep.com/patent/US20190173341A1

## CPC

- H02K 1/2766: {having a flux concentration effect}
- H02K 15/03: having permanent magnets
- H02K 15/12: Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

A motor having an improved assembly structure of a rotor core and a magnet is provided. The motor comprising a stator and a rotor that rotates with respect to the stator. The rotor comprises a rotor core that is disposed rotatably with respect to a rotary shaft and has a plurality of magnet coupling apertures disposed apart from each other at a particular interval in a circumferential direction of the rotary shaft. Additionally, a magnet is inserted into the magnet coupling aperture and a plate is coupled to opposite end portions of the rotor core. The plate includes a magnet support portion that is configured to support the magnet.

## Claims

### Claim 1

A motor, comprising:
a stator; and
a rotor configured to rotate with respect to the stator,
wherein the rotor includes:
a rotor core disposed rotatably with respect to a rotary shaft and having a plurality of magnet coupling apertures disposed apart from each other at a particular interval in a circumferential direction of the rotary shaft;
a magnet inserted into the magnet coupling aperture; and
a plate coupled to opposite end portions of the rotor core,
wherein the plate includes a magnet support portion configured to support the magnet.

### Claim 2 (depends on 1)

The motor of claim 1, wherein the magnet support portion protrudes from a bottom surface of the plate.

### Claim 3 (depends on 1)

The motor of claim 1, wherein the magnet support portion protrudes from the plate to be coupled between the rotor core and the magnet.

### Claim 4 (depends on 1)

The motor of claim 1, wherein the magnet support portion is formed to have a shape that corresponds to at least one portion of the magnet coupling aperture.

### Claim 5 (depends on 1)

The motor of claim 1, wherein the magnet support portion includes:
a first support portion configured to support a first end surface of the magnet; and
a second support portion configured to support a second end surface opposite to the first end surface.

### Claim 6 (depends on 5)

The motor of claim 5, wherein the first support portion is disposed further towards an outside than the second support portion with respect to a center of the plate.

### Claim 7 (depends on 5)

The motor of claim 5, wherein the first support portion includes a first support surface in contact with the first end surface and the second support portion includes a second support surface in contact with the second end surface.

### Claim 8 (depends on 5)

The motor of claim 5, wherein the first support portion and the second support portion are accommodated inside of the magnet coupling aperture.

### Claim 9 (depends on 1)

The motor of claim 1, wherein a center of the plate includes a shaft aperture to allow the rotor core to be inserted therein.

### Claim 10 (depends on 9)

The motor of claim 9, wherein the shaft aperture is disposed in a position that corresponds to an aperture of the rotor core.

### Claim 11

A method for manufacturing a rotor, comprising:
stacking a rotor core in which a plurality of magnet coupling apertures are disposed;
disposed a magnet in the plurality of magnet coupling apertures using a jig from which a magnet support portion protrudes;
molding the magnet and the rotor core; and
removing the jig and assembling the plate.