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US 2009/0212666 A1Published application
Spring Element and Piezoelectric Actuator with the Spring Element
AssigneeEpcos AG
InventorsWerner Stocker, Franz Veronik, Andreas Jakope, Manfred Reinisch
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Abstract
A spring element for pretensioning a piezoelectric actuator is specified, wherein the spring element has a tubular body with recesses. The recesses are each made in the form of a polygon with rounded corners. A piezoelectric actuator with such a spring element is also specified.
Claims20
A spring element for pretensioning a piezoelectric actuator, comprising a tubular body that has a plurality of recesses, wherein each recess has a shape in the form of a polygon with rounded corners.
A piezoelectric actuator comprising:
- a piezoelectric multilayer component with a plurality of stacked piezoelectric layers and electrode layers, and
- a spring element comprising a tubular body with a plurality of recesses, each recess having a shape in the form of a polygon with rounded corners, wherein the piezoelectric multilayer element is arranged at least partially within the spring element.
Dependencies are inferred from the claim text.