| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear vibration device which prevents fine vibration and at the same time prevents a problem that a vibrator collides against a case by external force. SOLUTION: The linear vibration device comprises a case for partitioning the inner space, a bracket installed in the lower part of the case and in which a coil for inducing a magnetic field by applying electric current is installed, a vibrator containing a magnet stored in a hollow part of a yoke having the hollow part closed in one face and a weight joined to the outside of the yoke, and a spring member joined to the upper part of the case and so elastically supporting the vibrator as to make the vibrator in the outside of the weight and a rotation member which rotates while having contact with the side wall of the case is inserted in the recesses in a manner that the rotation member can rotate. COPYRIGHT: (C)2011,JPO&INPIT
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