PIEZOELECTRIC VIBRATION REED, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC INSTRUMENT, AND RADIO TIMEPIECE
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United States of America Patent
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Issued Date -
Mar 28, 2013
app pub date -
Sep 27, 2012
filing date -
Sep 28, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A piezoelectric vibration reed which is capable of inhibiting vibrations of a vibrating arm portion in the thickness direction and inhibiting the increase in CI value and a vibration leak, a piezoelectric vibrator, an oscillator, an electronic instrument, and a radio timepiece using the piezoelectric vibration reed is provided. A piezoelectric vibration reed includes: a pair of vibrating arm portions arranged side by side; groove portions formed on both main surfaces of the vibrating arm portions and extending in the Y direction (the longitudinal direction) of the vibrating arm portions; a base portion connecting the pair of vibrating arm portions; and the groove portions are each formed in the interior thereof with a rib extending from a wall surface on a −Y side (proximal end side) to a +Y side (distal end side).
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