| 摘要 |
<p>The present invention relates to a linear vibration motor, comprising upper and lower housings; a spring coupled with the upper housing; a coil coupled with the lower housing; and a drive part including a first yoke which is coupled with the spring, formed with a space inside and a protrusion protruded downward into the center thereof, a weight coupled with an edge of the first yoke, a magnet coupled with the first yoke and the weight, and a second yoke coupled with the lower side of the magnet and the inside of the weight. The first and second yokes and the weight are formed in the structure surrounding the magnet in the drive part, thereby improving drop reliability. An auxiliary magnet is formed in the space of the first yoke of the drive part for further improving magnetic force. The magnet may be easily aligned with a central shaft via the weight and the first yoke in the assembling procedure. In addition, a worker can form a hole formed in each component through a jig, thereby promoting the improvement of work efficiency.</p> |
