# US 2014/0191608 A1 · Rotor for motor

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- Number: US 2014/0191608 A1
- Document ID: US20140191608A1
- Status: Published application
- Kind: A1
- Application number: 14/235,089
- Filed: 2012-06-19
- Published: 2014-07-10
- Earliest claimed: 2011-09-27
- Assignees: New Motech Co., Ltd.
- Inventors: Jeong Cheol Jang; Ji Min Lee
- Web page: https://patentgrep.com/patent/US20140191608A1

## CPC

- H02K 1/27: Rotor cores with permanent magnets
- H02K 1/276: Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K 1/2773: {consisting of tangentially magnetized radial magnets}
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

Disclosed therein is a rotor for a motor. The rotor includes: a rotor core including an annular ring having a shaft hole formed at a central portion thereof, a plurality of yokes formed around the annular ring, and magnet insertion holes formed between the neighboring yokes; magnets respectively inserted into the magnet insertion holes; and a pair of rotor covers each having a ring plate, which has a shaft insertion hole formed at a central portion thereof, and a plurality of stoppers protrudingly formed around the ring plate. A pair of the rotor covers are joined to an upper portion and a lower portion of the rotor core in such a fashion that the stoppers are respectively located at side portions of the magnet insertion holes.

## Claims

### Claim 1

A rotor for a motor comprising:
a rotor core including an annular ring having a shaft hole formed at a central portion thereof, a plurality of yokes formed around the annular ring, and magnet insertion holes formed between the neighboring yokes;
magnets respectively inserted into the magnet insertion holes; and
a pair of rotor covers each having a ring plate, which has a shaft insertion hole formed at a central portion thereof, and a plurality of stoppers protrudingly formed around the ring plate,
wherein a pair of the rotor covers are joined to an upper portion and a lower portion of the rotor core in such a fashion that the stoppers are respectively located at side portions of the magnet insertion holes.

### Claim 2 (depends on 1)

The rotor according to claim 1, wherein each of the yokes comprises a through hole formed in a longitudinal direction and at least one rivet insertion hole formed at a position corresponding to the through hole of the rotor cover.

### Claim 3 (depends on 2)

The rotor according to claim 2, further comprising a rivet penetrating the rivet insertion hole.

### Claim 4 (depends on 1)

The rotor according to claim 1, wherein the rotor core comprises a plurality of joining holes formed in the annular ring in a longitudinal direction and the rotor cover comprises a plurality of first joining protrusions formed around the shaft insertion hole of the ring plate of the rotor cover and at positions corresponding to the joining holes.

### Claim 5 (depends on 1)

The rotor according to claim 1, wherein each of the yokes comprises a through hole formed in a longitudinal direction and the ring plate comprises at least one second joining protrusion formed at a position corresponding to the through hole of the rotor cover, the second joining protrusion being joined to the through hole located at the corresponding position.