Electroacoustic Transducer, in Particular Transmitting Transducer
First Claim
1. Electroacoustic transducer, in particular a transmitting transducer for sonar systems, having two end caps (11, 12) which are arranged at a distance from one another and have a plurality of laminates (13) in particular concave-curved laminates (13) which are stretched between the end caps (11, 12) and which are fixed at the end on the end caps (11, 12) alongside one another in the circumferential direction and can be excited to oscillate, and having an elastic casing (16) which surrounds the laminates (13) on the outside,whereinat least one composite module (17) is fixed to each laminate (13) in order to excite oscillations and has electrode structures (20, 21), which are arranged on at least two film layers (18, 19) composed of insulating material and have preferably parallel electrodes (27, 28), which are at a distance from one another, and preferably parallel piezoceramic fibres (22) which are arranged between the film layers (18, 19), are at a distance from one another and make contact with electrodes (27, 28) on their longitudinal sides which face away from one another.
1 Assignment
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Accused Products
Abstract
An electroacoustic transducer, in particular a transmitting transducer for sonar systems, is disclosed, comprising two end caps that are arranged at a fixed distance from each other, multiple bars which are braced between the two end caps and the ends of which are attached to the end caps next to each other in the peripheral direction, and an elastic shell that externally encloses the bars. In order to significantly reduce the weight of the transducer and simplify production, composite modules are attached to the bars so as to excite vibrations. Each composite module has electrode structures that include spaced-apart electrodes and are arranged on at least two film layers made of insulating material, and spaced-apart piezoceramic fibers which are arranged between the film layers and are contacted by the electrodes on opposite longitudinal sides.
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Citations
11 Claims
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1. Electroacoustic transducer, in particular a transmitting transducer for sonar systems, having two end caps (11, 12) which are arranged at a distance from one another and have a plurality of laminates (13) in particular concave-curved laminates (13) which are stretched between the end caps (11, 12) and which are fixed at the end on the end caps (11, 12) alongside one another in the circumferential direction and can be excited to oscillate, and having an elastic casing (16) which surrounds the laminates (13) on the outside,
wherein at least one composite module (17) is fixed to each laminate (13) in order to excite oscillations and has electrode structures (20, 21), which are arranged on at least two film layers (18, 19) composed of insulating material and have preferably parallel electrodes (27, 28), which are at a distance from one another, and preferably parallel piezoceramic fibres (22) which are arranged between the film layers (18, 19), are at a distance from one another and make contact with electrodes (27, 28) on their longitudinal sides which face away from one another.
Specification