# US 2014/0152126 A1 · Horizontal linear vibrator

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- Number: US 2014/0152126 A1
- Document ID: US20140152126A1
- Status: Published application
- Kind: A1
- Application number: 13/874,383
- Filed: 2013-04-30
- Published: 2014-06-05
- Earliest claimed: 2009-07-22
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Yong Jin KIM; Jun Kun CHOI; Jae Woo JUN; Ki Suk WOO; Kwang Hyung LEE; Je Hyun BANG; Seok Jun PARK; Kyung Ho LEE
- Web page: https://patentgrep.com/patent/US20140152126A1

## CPC

- H02K 33/16: with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
- B06B 1/045: {using vibrating magnet, armature or coil system}
- H02K 33/02: with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- B06B: METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, {e.g.} FOR PERFORMING MECHANICAL WORK IN GENERAL (for particular applications, see the relevant subclasses, e.g. B07B1/40, B23Q17/12, B24B31/06; measurement of mechanical vibrations G01H; in direction finding, locating, distance or velocity measuring G01S; {generating seismic energy G01V1/02}; control of mechanical vibrations in general G05D; sound-producing devices, e.g. bells, sirens, whistles G10K, {e.g. methods or devices for transmitting, conducting, or directing sound in general G10K11/00}; generation of electrical oscillations H03B; electromechanical resonators in general H03H; electromechanical transducers {for communication techniques, e.g. microphones, speakers} H04R)

## Abstract

The present invention provides a horizontal linear vibrator which can reduce the thickness but increase vibration strength while at the same time guaranteeing a sufficiently long lifetime and satisfactory responsivity. The horizontal linear vibrator includes a casing, a bracket, a vibration unit and springs. The casing defines an internal space therein. The bracket is disposed under the casing. A cylindrical coil is provided on the bracket. The vibration unit has a magnet, a yoke and a weight. The yoke contains the magnet therein and is open on the lower end thereof. The weight is coupled to the outer surface of the yoke. The springs are coupled to sidewall plates of the casing or the bracket. The springs elastically support the vibration unit to allow the vibration unit to vibrate in the horizontal direction.

## Claims

### Claim 1

A horizontal linear vibrator, comprising:
a casing defining an internal space therein;
a bracket disposed under the casing, with a cylindrical coil provided on the bracket;
a vibration unit comprising: a yoke provided with a magnet attached to an upper surface thereof, the yoke being open on a lower end thereof; and a weight coupled to an outer surface of the yoke; and
springs coupled to both ends of the casing or the bracket, the springs elastically supporting the vibration unit to allow the vibration unit to vibrate in the horizontal direction,
wherein the yoke comprises: an upper plate provided on a lower surface thereof with the magnet; a side plate bent downwards from the upper plate; and a bottom plate bent inwards from the side plate, the bottom plate extending a predetermined length parallel to the upper plate, with an opening being formed through a portion of the bottom plate, and
a circuit board is provided on an upper surface of the bracket, and a coil guide perpendicularly protrudes from an upper surface of the circuit board, so that the cylindrical coil is supported by the coil guide, and
the coil guide supports the cylindrical coil such that the cylindrical coil is disposed in the yoke through the opening of the bottom plate of the yoke.

### Claim 2 (depends on 1)

The horizontal linear vibrator as set forth in claim 1, wherein the cylindrical coil is disposed parallel to the magnet.

### Claim 3 (depends on 1)

The horizontal linear vibrator as set forth in claim 1, wherein the magnet comprises a plurality of magnets arranged such that different poles thereof are disposed on a same plane.

### Claim 4 (depends on 1)

The horizontal linear vibrator as set forth in claim 1, wherein plates are provided on both ends of the weight, the plates fastening corresponding ends of the springs to the weight.

### Claim 5 (depends on 1)

The horizontal linear vibrator as set forth in claim 1, wherein each of the springs comprises a coil spring or a plate spring.