From the tuning fork die piezoelectric vibrating reed and the trail section

摘要

PPROBLEM TO BE SOLVED: To suppress an increase in a series resonance resistance value resulting from variation in vibration by suppressing variation in vibration. PSOLUTION: A crystal vibration chip 2 comprises a base 21, and legs 22a and 22b projecting from one end face of the base 21, and a fork 6 is provided between the legs 22a and 22b. The fork 6 is provided with bends 61 and 62 formed continuously from the legs 22a and 22b, and a flat portion 63 formed continuously from the bends 61 and 62. The flat portion 63 includes one end point 64 continuous to the bend 61 formed continuously from one leg 22a, and the other end point 65 continuous to the bend 62 formed continuously from the other leg 22b. The distance from a midpoint 66 on the fork 6 located on the intermediate position (on the long and short dash line C) between the legs 22a and 22b to one end point 64 is shorter than the distance from the midpoint 66 to the other end point 65. PCOPYRIGHT: (C)2008,JPO&INPIT