| 摘要 |
A diaphragm assembly ( 20 ) comprises at least two piezoelectric diaphragm members ( 22 ) arranged in a stacking direction ( 23 ). An interface layer ( 24 ) is situated between adjacent piezoelectric diaphragm members ( 22 ). The interface layer ( 24 ) in the stacking direction ( 23 ) is displaceable but incompressible. The interface layer ( 24 ) permits lateral movement of the adjacent piezoelectric diaphragm members ( 22 ) relative to the interface layer ( 24 ) in a direction perpendicular to the stacking direction ( 23 ). The interface layer ( 24 ) can comprise, for example, an incompressible liquid or a semi-liquid. A gasket ( 26 ) can be used to seal the incompressible substance in the interface layer if necessary. |
