Linear vibrator

1. A linear vibrator, comprising:

a housing providing an internal space;

an electromagnet having one end fixed to the housing so as to be disposed in the internal space;

a vibrating part including a magnet facing the electromagnet and interacting therewith;

an elastic member having one end fixed to the housing and the other end fixed to the vibrating part and elastically supporting the vibrating part during vibrating thereof; and

a separation prevention member interposed between the other end of the electromagnet and the housing, and

a shock absorbing member inserted between the separation prevention member and the other end of the electromagnet.

2. The linear vibrator of claim 1 . wherein at least a portion of the separation prevention member is formed of an elastomer.

3. The linear vibrator of claim 1 , wherein the separation prevention member is formed of a magnetic material.

4. The linear vibrator of claim 1 , wherein the separation prevention member is formed of a non-magnetic material.

5. The linear vibrator of claim 1 , wherein the housing includes an external wall protruded into the internal space, and

the separation prevention member is inserted into an interior of the external wall.

6. The linear vibrator of claim 1 , wherein the electromagnet includes a yoke fixed to the housing and a coil wound around the yoke.

7. The linear vibrator of claim 6 , wherein one end of the yoke is inserted into a seating groove or a seating hole formed in the housing.

8. The linear vibrator of claim 6 , wherein the other end of the yoke is provided with a flange protruded in an outer radial direction.

9. The linear vibrator of claim 8 , wherein the flange is disposed to face the magnet.