Patent ID: 9553497
Date: 2017-01-24
CPC Classifications: B06B,H02K

Claim:
1. A horizontal linear vibrator, comprising: a casing defining an internal space therein; a bracket having a plain shape, provided with a circuit board directly on an upper surface thereof and disposed under the casing: a cylindrical coil attached to a coil guide and distanced from an upper surface of the circuit board; a vibration unit comprising a yoke, a magnet, and a weight, the yoke provided with the magnet comprising a first magnet and a second magnet, the yoke being open on a lower end thereof, the weight coupled to an outer surface of the yoke, and the cylindrical coil provided above bottom plates of the yoke on the circuit board; 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 a horizontal direction, wherein the yoke comprises: an upper plate wherein the magnet is provided directly on a lower surface thereof; a side plate bent downwards from the upper plate; a bottom plate bent inwards from the side plate, the bottom plate extending a predetermined length parallel to the upper plate, the bottom plate having an opening being formed through a portion of the bottom plate, and a coil guide perpendicularly protruding from an upper surface of the bracket, the cylindrical coil being inserted into the coil guide, the coil guide supporting the cylindrical coil, and the cylindrical coil being disposed in the yoke through the opening of the bottom plate of the yoke, wherein the vibration unit vibrates in the horizontal direction by changing the directions of alternative magnetic field with respect to the first magnet and the second magnet.