Patent ID: 9356221
Filing Date: 2016-05-31
CPC Classification: B06B,H01L

Claim Text:
1. A piezoelectric vibrator, comprising: a piezoelectric vibrator unit having a pair of fastening portions, a vibration portion connected with the pair of fastening portions for vibrating along a vibration direction, and a mass attached on the vibration portion, the mass having an connecting portion attached on the vibrating portion and at least one extending portion extending from the connecting portion and away from the vibrating portion; a holder having a pair of mounting portions spaced apart from each other for fixing the fastening portions of the piezoelectric vibrator unit and at least one stopping portion extending from the mounting portion and disposed between the extending portion of the mass and the vibrating portion; wherein, a distance between the extending portion and the at least one stopping portion is less than the amplitude of the vibration portion for limiting the vibration of the vibrating portion and avoiding excessive amplitude of the vibration portion; and wherein each distal end of the extending portion has a receiving concave towards the vibration portion for receiving the at least one stopping portion.