Acoustic transducer

Abstract

There is provided an acoustic transducer which is reduced in size and which can generate an acoustic emission having a low frequency. The acoustic transducer of the present invention includes: a plurality of bending vibration modules 7 each of which is constructed of at least one bending vibrator made of at least one plate-shaped piezoelectric vibrator and at least one vibration plate; a plurality of support members 9 each of which supports each of bending vibration modules 7; and end plates which close both end portions of the acoustic transducer. The plurality of bending vibration modules 7 are arranged in a shape of a cylinder. Each of support members 9 is extended radially from the center of bending vibration modules 7 that are arranged in a shape of a cylinder and is joined to an end portion of each of the vibration plates of bending vibration modules 7 adjacent to each other. Further, a part of support members 9 has a cutout portion formed at an end portion thereof. The end plates have open apertures 4 formed therein respectively, open aperture 4 being passed through the end plate. Open aperture 4 communicates with the other open aperture 4 via acoustic emission generation part 21 and cutout portion 20, acoustic emission generation part 21 being constructed of two adjacent support members 9 and bending vibration module 7.

Dependencies are inferred from the claim text.