LOW-FREQUENCY LONGITUDINAL-BENDING PIEZOCERAMIC TRANSDUCER Russian patent published in 2022 - IPC B06B1/06 

FIELD: acoustics.

SUBSTANCE: invention relates to acoustics. The low-frequency transducer contains a reinforced rod active element consisting of thickness-polarized piezoceramic washers, end caps and a body with a barrel-shaped side wall, on which axial profile slots are made, each of which is sealed with its own elastic tab. The elastic tab in the longitudinal section is made to repeat the geometric shape of the axial profile slot, and in the cross section it has an arched shape, the rounded part of which is directed to the inner surface of the barrel-shaped side wall of the housing, and the non-rounded parts are glued by their outer sides to the side surfaces of the axial profile slot, while the gluing area occupies the entire area of ​​the side surface of the axial profile slot, and the areas of the inner surface of the housing adjacent to the edges of each axial profile slot are also covered for at least H/2 from the edges of the axial profile slot, where H is the largest thickness of the housing at the location of the axial profile slot, symmetrical with respect to the axial profile slot with layers of adhesive compound in contact with the outer sides of the non-rounded parts of the elastic insert protruding under the inner surface of the body, with a thickness h greater than or equal to 2d at the point of contact, where d is the thickness of the elastic insert material.

EFFECT: ensuring the reliability of sealing.

2 cl, 2 dwg