| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear type vibration actuator by which the location accuracy of a coil in a case can be increased easily.SOLUTION: In a linear type vibration actuator 1, a magnetic circuit is formed by a magnet 13 with a weight 15 fixed thereto and a shaft 20 in a case 2, and a coil 24 causes the weight 15 and the magnet 13 to reciprocate in the case 2. The vibration actuator 1 comprises: the shaft 20 provided upright on the case 2 and made of a magnetic material; the coil 24 supported by the shaft 20 and having a first coil part 22 and a second coil part 23 which are arrayed in parallel along a direction of an axial line L and are wound in directions opposite to each other; the ring-shaped magnet 13 disposed so as to surround the coil 24 and the shaft 20; the weight 15 fixed to the magnet 13; and a leaf spring 17 disposed in the case 2, and serving to urge the magnet 13 and the weight 15 toward the direction of the axial line L of the shaft 20.SELECTED DRAWING: Figure 3 |
