PIEZOELECTRIC BISTABLE RELAY Russian patent published in 2012 - IPC H01H57/00 

FIELD: electricity.

SUBSTANCE: device contains cover, base with cantilever fitted piezoelectric element, control contacts and switching contacts for electric circuits. Piezoelectric element is made in the form of cantilever fitted coplanar trimorphic element consisting of metal gasket and two piezoceramic plates glued to it at both sides. Trimorphic elements is fixed in relay body, at that gasket is made of elastic material and includes elements for elastic strain, bend and fixture of bent trimorphic elements in the form of two elastic bands with transversal corrugations shaped at the above gasket by cuts of piezoceramic plates from two sides. Height of corrugations is so that bend deflection of plates does not exceed value permitted for used piezoceramic material. At free end of trimorphic element in the area of cuts there are elastic dampers made of rubber, for example.

EFFECT: simplification of design, assembly and production process.

5 dwg