Piezoelectric device

A piezoelectric device comprising:

• a base having an annular shape;
• a plurality of beam sections each of which includes a fixed end portion connected to the base and a tip end portion located on a side opposite to the fixed end portion and extends from the fixed end portion toward the tip end portion;
• and
• a connecting section that connects, among the plurality of beam sections, a pair of beam sections adjacent to each other in a circumferential direction of the base;
• wherein
• each of the plurality of beam sections is a piezoelectric vibrating section including a plurality of layers;
• a slit defined by portions of a pair of end edges of adjacent ones of the pair of beam sections and an opening located adjacent to the tip end portions of the pair of beam sections while the opening is spaced apart from the slit and defined by other portions of the pair of end edges are provided between the pair of beam sections;
• the connecting section is provided to fold back between the pair of beam sections;
• the connecting section includes a first coupling portion extending along the slit and connected to one of the pair of beam sections, a second coupling portion extending along the slit and connected to another of the pair of beam sections, and a bridging portion located between the slit and the opening and connected to both of the first coupling portion and the second coupling portion;
• and
• the plurality of beam sections are connected to each other in the circumferential direction via the connecting section while each of the plurality of beam sections is interposed between slits extending in intersecting directions.