| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a linear drive device, capable of obtaining a stable amount of vibration, by preventing variations in the amount of vibration in the same type of linear drive devices, and capable of increasing the amount of vibration. <P>SOLUTION: In the linear drive device including an oscillating member 17 and a drive shaft 21 having a base end 26 fixed to the oscillating member 17, wherein a moving body friction-engaging with the drive shaft 21 slides along the axial direction of the drive shaft 21 when the drive shaft 21 vibrates in the axial direction thereof by vibration of the oscillating member 17, the oscillating member 17 has a piezoelectric element 23 which expands and contracts by energization and a planar elastic vibrator 19, the vibrator 19 is fixed by superimposing the plate surface on one side surface of the piezoelectric element 23, and a weight member 32 is fixed to the surface of the oscillating member 17 on the reverse side of the surface where the drive shaft 21 is fixed. <P>COPYRIGHT: (C)2011,JPO&INPIT |
