| 摘要 |
PURPOSE: A linear vibration motor is provided to improve magnetic force by arranging an auxiliary magnet in a space part of a first yoke of a driving unit. CONSTITUTION: A linear vibration motor includes an upper housing(10), a lower housing(20), a spring(S), a coil(C), and a driving unit(30). The spring is combined in the upper and lower housings. The coil is combined in the lower housing. The driving unit includes a first yoke, a weight, a magnet, and a second yoke. The first yoke is combined in the spring and includes a protrusion and a space. The space passes through the protrusion. The weight is combined in the edge of the first yoke. The magnet is combined in the first yoke and the weight. The second yoke is combined in an inner side of the lower side and the weight of the magnet. The auxiliary magnet is arranged in the space part of the first yoke to supplement the magnetic force.
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