PIEZOELECTRIC VIBRATION PIECE AND PIEZOELECTRIC TRANSDUCER USING PIEZOELECTRIC VIBRATION PIECE

• Main Author: KODA NAOKI
• Format: Patent
• Language: English; Japanese
• Published: 21.09.2017
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

PROBLEM TO BE SOLVED: To provide a piezoelectric vibration piece which corresponds to the miniaturization, inhibits stress related to retention from being propagated to the piezoelectric vibration piece and has highly stable characteristics, and also to provide a piezoelectric transducer using the piezoelectric vibration piece.SOLUTION: A crystal vibration piece 9 is formed by integrally molding a vibration part 90 on the center side, a frame part 92 on the outer peripheral side of the vibration part 90, and four support parts 91 for connecting the vibration part 90 and the frame part 92. The support part 91 extends from the vibration part 90. In the support part 91, a circulation part 910 is included which goes around the outer periphery of the vibration part 90 in the same direction. Furthermore, coupling parts 911, 912 extending in the direction different from the circulation direction are connected to both ends of the circulation part 910.SELECTED DRAWING: Figure 3 【課題】小型化に対応するとともに圧電振動片への保持に係る応力の伝搬を抑制し、高安定な特性を有する圧電振動片と当該圧電振動片を用いた圧電振動子を提供することを目的とする。【解決手段】水晶振動片９は、中央側の振動部９０と、振動部９０の外周側の枠部９２と、振動部９０と枠部９２とを接続する４つの支持部９１とが一体成形されている。支持部９１は振動部９０から伸長しており、支持部９１には振動部９０の外周を同一の方向に周回する周回部９１０が含まれ、さらに周回部９１０の両端に周回方向と異なる方向に伸長する連結部９１１、９１２が接続されている。【選択図】図３