Short transducer

The invention relates to a short transducer which comprises an amplitude-change pole (1), a ceramic nozzle screw (2), a bonding tool (3), a piezoelectric ceramic piece (4), a copper piece (5), a rear cover plate (6) and a flange (7), the amplitude-change pole (1) comprises an amplitude-change pole head and an amplitude-change pole body, the amplitude-change pole head is a front vibration node (8) from the top end of the amplitude-change pole to the first main frequency of the transducer, and the amplitude-change pole body is a rear vibration node (8) from the top end of the amplitude-change pole to the second main frequency of the transducer. The amplitude-change pole body is a mounting surface from a front vibration node (8) of a first main frequency of the transducer to the piezoelectric ceramic piece. Compared with the prior art, the invention has the advantages of good modality, interference resistance, light weight, high rigidity and the like. 本发明涉及一种短换能器，包括变幅杆(1)、瓷嘴螺丝(2)、键合工具(3)、压电陶瓷片(4)、铜片(5)、后盖板(6)和凸缘