| 摘要 |
The invention relates to a piezo actuator, for example, for actuating a mechanical part, according to which the piezo actuator is provided with a multilayer structure consisting of piezo layers (2) and can be subjected to the action of electric voltage in a piezoelectrically active area (A) via inner electrodes (3, 4) arranged between the layers. At least one inactive area (B, C) is provided in the layer structure of the piezo actuator (1). This area (B, C) is made without inner electrodes and from a material whose mechanic and thermal properties correspond to the properties of the active area (A) including the combination of the interaction of the material of the piezo layers (2) and of the inner electrodes (3, 4).
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