# US 2016/0258102 A1 · Balancer of washing machine

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- Number: US 2016/0258102 A1
- Document ID: US20160258102A1
- Status: Published application
- Kind: A1
- Application number: 15/027,240
- Filed: 2014-10-02
- Published: 2016-09-08
- Earliest claimed: 2013-10-04
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Min Sung Kim; Jeong Hoon Kang; Dong Ha Jung
- Web page: https://patentgrep.com/patent/US20160258102A1

## CPC

- D06F 37/225: {Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets}
- D06F 37/30: Driving arrangements (control circuits or arrangements D06F34/08)
- D06F 39/028: {Arrangements for selectively supplying water to detergent compartments}
- D06F 39/14: Doors or covers; Securing means therefor
- D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES

## Abstract

Disclosed herein is a washing machine having an improved balancing function. The washing machine includes a cabinet, a drum disposed in the cabinet to be rotatable, a balancer installed at the drum to offset an unbalanced load generated at the drum when the drum is rotated, 100 and at least one magnetic body disposed between the balancer and the drum.

## Claims

### Claim 1

A washing machine comprising:
a cabinet;
a drum disposed in the cabinet to be rotatable;
a balancer installed at the drum to offset an unbalanced load generated at the drum when the drum is rotated; and
at least one magnetic body disposed between the balancer and the drum.

### Claim 2 (depends on 1)

The washing machine according to claim 1, wherein the balancer comprises a balancer housing having an annular channel formed therein, at least one mass disposed in the channel to be movable, and at least one magnet provided at one side of the balancer housing to restrict a movement of the mass along the channel when a rotational speed of the drum is in a particular range, and
the magnetic body is disposed between a front surface of the drum and the magnet.

### Claim 3 (depends on 1)

The washing machine according to claim 1, wherein the drum comprises a cylindrical part, a front plate disposed at a front portion of the cylindrical part, and a recess formed at the front plate, and
the magnetic body is disposed inside the recess.

### Claim 4 (depends on 2)

The washing machine according to claim 2, wherein the magnetic body is formed in a shape corresponding to the magnet.

### Claim 5 (depends on 1)

The washing machine according to claim 1, wherein the magnetic body is formed in a plate shape.

### Claim 6 (depends on 1)

The washing machine according to claim 1, wherein the magnetic body is formed in a case shape of which one side is opened.

### Claim 7 (depends on 2)

The washing machine according to claim 2, wherein at least two or more magnetic bodies are disposed to be spaced in a circumferential direction of the balancer housing.

### Claim 8 (depends on 2)

The washing machine according to claim 2, wherein the balancer comprises a magnet case configured to receive the magnet, and
the magnetic body is received in the magnet case.

### Claim 9 (depends on 8)

The washing machine according to claim 8, wherein the magnetic body is disposed between the magnet and the magnet case.

### Claim 10 (depends on 1)

The washing machine according to claim 1, wherein a thickness of the magnetic body is 0.5 mm or more and 3 mm or less.

### Claim 11

A balancer of a washing machine, which offsets an unbalanced load generated at a drum of the washing machine, comprising:
a balancer housing installed at at least one of a front surface and a rear surface of the drum and having a channel configured to extend in a circumferential direction of the drum;
a plurality of masses disposed to be movable along the channel;
at least one magnet disposed at a rear side of the balancer housing to restrict the plurality of masses when an RPM (revolutions per minute) of the drum is in a particular range; and
at least one magnetic body disposed at a rear side of the magnet to have an influence on a magnetic force of the magnet, and to concentrate the magnetic force of the magnet to an inner side of the balancer housing.

### Claim 12 (depends on 11)

The balancer according to claim 11, further comprising a magnet case configured to receive the magnet and the magnetic body and coupled to a rear surface of the balancer housing.

### Claim 13 (depends on 11)

The balancer according to claim 11, wherein the magnetic body is formed in a plate shape.

### Claim 14 (depends on 11)

The balancer according to claim 11, wherein the magnetic body comprises a receiving part configured to receive the magnet.