Arrangement for the electrical contacting of piezoelectric multilayer actuators

2007 
The invention relates to an arrangement for the electrical contacting of piezoelectric multilayer actuators, comprising internal electrode layers, which are alternately in electrical communication with the lateral, outer bonding pad, and in each case at least one disposed on the bonding pad ladder-like structured molded part with solder terminals for a connection means, wherein the molding along its majority or entire longitudinal axial line is firmly bonded with the bonding pad. According to the invention, the side bars of the ladder-like structure molded on mutually interruption points such that a meander pattern is formed. Each meander comprises a plurality of ladder rungs, wherein the break points are either already provided on the mold part or on the preformed breaking points are generated specifically by the thermo-mechanical stress or fatigue loads in actuator operation.
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