Patent ID: 7183695

Claim:
A piezoelectric actuator module, comprising at least one piezoelectric component ( 6 ), one actuator foot ( 5 ), and one actuator head ( 7 ) which head includes a conical portion, ( 42 ) and cooperates with a component to be actuated by the piezoelectric component ( 6 ), a bush ( 9 ) extending in the axial direction and surrounding the actuator module ( 2 ; 20 ; 30 ), and a diaphragm ( 10 ; 21 ; 31 ; 41 ) extending essentially in the radial direction and adjoining the actuator head ( 7 ), the diaphragm being connected to the conical portion, the diaphragm ( 10 ; 21 ; 31 ; 41 ) also being joined to the bush ( 9 ) and having a curved cross section in the radial direction.