Patent ID: 7595582

Claim:
A resonator including: a vibrating member, in order to join a second member to be joined to a first member to be joined, holding the second member to be joined and applying a vibration to the second member to be joined; and a depressing member applying a depressing force to the second member to be joined, which in-turn applied it to the side of the first member to be joined, through the vibrating member, wherein: the depressing member includes: leg portions which are disposed so as to leave spaces between the leg portions and both side faces of the vibrating member parallel with a vibration direction; and supporting portions through which the leg portions and the side faces of the vibrating member are to be coupled to each other; each of the leg portions and the supporting portions is provided substantially at the center of a length of the vibrating member in the vibration direction per one side face of the vibrating member by one; two openings having a section of a top portion, a base portion, and a connecting portion connecting the top portion and the base portion, the top portion being formed of an upper oblique side and a lower oblique side, the top portion being directed toward the end portion side of the vibrating member so as to face in opposite directions from one another are respectively formed on both sides of a coupling portion in the vibrating member between the vibrating member and the supporting portions, and the connecting portion connecting the base portion to the upper oblique side and the lower oblique side; and the vibrating member is supported between the two openings by the supporting portion.