TUNING-FORK CRYSTAL VIBRATION ELEMENT, METHOD FOR MANUFACTURING TUNING-FORK CRYSTAL VIBRATION ELEMENT, AND TUNING-FORK CRYSTAL VIBRATOR

摘要

The present invention is provided with: a base part (50); a plurality of vibration arm parts (60) extending from the base part (50) in a first direction (D1), the vibration arm parts (60) being arranged in a second direction (D2) that intersects the first direction (D1); and at least one receiving part (70). The base part (50) is provided with: a linking part (51) provided so as to fix, in common, the roots of the plurality of vibration arm parts (60); a support part (52) provided so as to be set apart in the first direction (D1) from the linking part (51); and a low-width part (53) provided between the linking part (51) and the support part (52) so as to connect the linking part (51) and the support part (52), the low-width part (53) having a lower width in the second direction (D2) than do the linking part (51) and the support part (52). The receiving part (70) is provided between the linking part (51) and the support part (52) in the first direction (D1).