Patent ID: 6617766
Filing Date: 2003-09-09
Classification: F02M,H01L

Abstract:
A piezoelectric actuator comprising a housing (10), in which at least one piezoelectric element (2; 21; 31; 41; 42) for subjecting an actuating element to a tensile force or compressive force is disposed and is guided longitudinally movably by means of a flexible intermediate layer (11), andstabilizing elements (9, 22), disposed parallel to this piezoelectric element (2; 21; 31; 41, 42), to prevent bending tensions in the piezoelectric element (2; 21; 31; 41; 42) said intermediate layer (11) being located between the piezoelectric element (2; 21; 31; 41; 42) and the stabilizing elements (9, 22), the ratio of the length of the piezoelectric element (2; 21; 31; 41; 42) and the stabilizing elements (9, 22) in the effective direction (Z axis) to the width transversely to the effective direction (X, Y direction) is from 5:1 to 50:1.