Patent ID: 6768245
Filing Date: 2004-07-27
Classification: H02N

Abstract:
A piezoelectric drive (1) comprising: a resonator (2) that includes an excitation piezoelement (10) and an oscillation body (11, 12), said oscillation body (11, 12) being coupled to the piezoelement and being in interactive connection with a body (3) to be driven, wherein the resonator (2) is mounted via mounting means (4, 6) attached to the resonator and acting elastically with respect to the body (3) to be driven, and has a mass distribution designed such that, as a result of an excitation oscillation by the piezoelement (10), and dependent on a frequency of the excitation oscillation, the resonator (2) oscillates asymmetrically in several directions (x, y, z), the asymmetric oscillations, via the interactive connection, displace the body (3) to be driven into a directed movement, and wherein the oscillation body (11, 12) is integrally formed with a spring element (4, 6) and may be brought into oscillation via the integrally formed spring element.