PIEZOELECTRIC VIBRATION PIECE, PIEZOELECTRIC TRANSDUCER, OSCILLATOR, ELECTRONIC APPARATUS, AND RADIO CONTROLLED WATCH

摘要

PROBLEM TO BE SOLVED: To effectively restrict the leakage of vibration while reducing the size and maintaining sufficient rigidity.SOLUTION: A piezoelectric vibration piece comprises a pair of vibration arm parts 10 and 11 and a base part 12 which integrally fix the base end sides of the pair of vibration arm parts 10 and 11. The base part 12 includes a connection part 21 having the base end sides of the vibration arm parts 10 and 11 fixed thereto and a mount part 22 used to mount the base part 12 on it. Between the connection part 21 and the mount part 22 in the base part 12, a narrow part 23 whose length along the Y direction of the base part 12 is narrower than the connection part 21 and the mount part 22 by a pair of notch parts 24 which are notched toward the inside from both sides of the Y direction of crossing the X direction of the base part 12 at right angles, is formed. The narrow part 23 has ribs 25 facing on the inside of the notch parts 24 formed therein while protruding to the outside in the Y direction of the base part 12.