Actuator for operating an adjusting element

The actuator (2) comprises a piezoelectric actuator element (4), which is connected to an adjusting element (12) for exerting an adjusting movement in the adjusting direction (14). For the transmission of a deflecting movement of the actuator element (4), a housing (6) is formed with a variable-shape displacer (8) enclosed therein. During operation, a deflecting movement of the actuator element (4) is transmitted to the displacer (8), so that the latter is deformed and, as a result of the deformation, performs a yielding movement. The housing (6) in this case forms a guide for the displacer (8), so that the yielding movement of the displacer (8) is oriented in the adjusting direction (14). The adjusting element (12) is also connected to the displacer (8), so that the yielding movement of the displacer (8) is transmitted to the adjusting element (12). 致动器(2)包括压电致动器元件(4)，其连接到调节元件(12)用于在调节方向(14)上施加调节运动。为了致动器元件(4)的偏转运动的传递，壳体(6)成型有封装其中的形状可变的位移器(8)。在操作期间，致动器元件(4)的偏转运动被传递到位移器(8)，以便使位移器变形，由于该变形，实施屈服运动。壳体(6)在该种情形中形成用于