Power generating element

A power generating element comprising:

• a piezoelectric body being expandable and contractible in response to a movement of a moving body, that undergoes a deformation when expanding or contracting and generates power when undergoing the deformation;
• a pair of electrodes that extracts the power generated as the piezoelectric body undergoes the deformation,
• wherein the piezoelectric body reversibly transitions between a first shape and a second shape different from the first shape, as the piezoelectric body expands or contracts,
• wherein the piezoelectric body is in one of the first shape and the second shape when the moving body does not act on the power generating element,
• wherein one of the first shape and the second shape is a bent shape, an elastic support being expandable and contractible;
• and
• a flexible intermediate support intermittently secured to the elastic support in the direction of expansion or contraction, to have the bent shape,
• wherein the piezoelectric body and the pair of electrodes have flexibility and are supported by the flexible intermediate support.