Ultrasonic piezoelectric ceramic piece

The utility model discloses an ultrasonic piezoelectric ceramic piece, and particularly relates to the field of ceramic pieces, which comprises a ceramic piece body, the ceramic piece body comprises aceramic piece internal device assembly, and a ceramic piece external shell assembly is fixedly sleeved outside the ceramic piece internal device assembly and located in an inner cavity of the ceramicpiece body. According to the utility model, the silver layers are fixedly arranged on the tops of the positive electrode piezoelectric patch and the negative electrode piezoelectric patch; in addition, a protection groove is formed in the ceramic chip outer shell assembly, and the ceramic chip outer shell assembly is filled with rubber, so that on one hand, internal cutoff can be prevented from being conducted to the outside, safety accidents are avoided, and on the other hand, due to the characteristics of a rubber layer, an internal device can be protected; and the first wiring groove and the second wiring groove ar