| 摘要 |
<p>A piezoresonator of a type wherein an ultra-thin oscillation portion and a ring-like enclosure portion for enclosing the periphery of the oscillation portion are formed integrally. The widths of a pair of thick side edges of the ring-like enclosure portion facing each other decrease gradually from one of the ends of the ring-like enclosure portion, the end is to be fixed to a case, to the other end facing the former, the ends being perpendicular to the edges. Thus, even when the piezoresonator is cantilevered, its strength can be improved drastically and breakage due to vibration and impact can be prevented.</p> |
