| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric vibration piece capable of securing rigidity of a base part and suppressing decline of impact resistance while suppressing vibration leakage by a narrow part, and a piezoelectric vibrator, an oscillator, an electronic device and a radio clock using the piezoelectric vibration piece.SOLUTION: A piezoelectric vibration piece 4 includes a base part 12 for integrally fixing the -Y side of a pair of vibration arm parts 10, 11, and the base part 12 includes a connection part 21, a mount part 22, and a narrow part 23 narrower than the connection part 21 and the mount part 22. The narrow part 23 is formed by a pair of notched parts 24, and a connection part wall surface 21a arranged on the +Y side of the notched part 24 and a mount part wall surface 22a arranged on the -Y side of the notched part 24 are formed so as to partially overlap in the view from a Z direction. |
