| 摘要 |
A vibration body 1 includes a vibrator 2 having vibration pieces 7 and a supporting part 5, and a mounting substrate 11 for mounting the vibrator. The mounting substrate has a seat part 13 for supporting the supporting part, and a base part 12. The seat part 13 has a level difference above the base part, the level difference being at least equal to or higher than the oscillation width of the vibration pieces, and the seat part is also provided with an edge portion 14 having a curved line shape. A normal line direction at each position on the edge portion is the same as a reference direction determined for the mounting substrate, or has at least one different angle with respect to the reference direction. When the vibrator is mounted on the seat part 13, tangential directions at the end portion of the supporting part and the edge portion of the seat part coincide with each other at a mounting position selected from the edge portion having the curved line shape of the seat part. The angle for mounting the vibrator on the mounting substrate is determined by the normal direction at the edge portion of the seat part by the position adjustment between the end portion and the edge portion. In mounting the vibrator on the angular speed sensor, oscillation of the vibrator is not impeded, and a preferable fixing of the vibrator is achieved as well as being set at any angle within a predetermined angle range.
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