Other

Epcos Ag

Gerald Kainz

Carsten Schuh

Karl Lubitz

Heinz Florian

Ulrich Bast

Andreas Wolff

Dieter Cramer

Klaus Reichmann

A piezoactuator includes a base. The base contains a stack of piezoelectric layers and electrode layers interspersed among the piezoelectric layers. The piezoelectric layers contain a ceramic material; the piezoelectric layers and the electrode layers are sintered together; and the base has a hole therethrough. The piezoactuator also includes a contact element, such as a pin, in the hole. The contact element is for use in forming an electrical connection to at least some of the electrode layers.

Piezoactuator and method for the production thereof

A piezo actuator (,) is disclosed that has a contact lug (,) for the electrical contacting of an electrode (,) of an actuator member (,). Due to an expansion and contraction of the actuator member, a mechanical stress occurs in the contact lug that is minimized in that the contact lug has a device for adapting the expanse to a dimension of the expansion and contraction. The device is, for example, a deformation material in the form of a wire weave. The piezo actuator is utilized for the drive of an injection valve in an internal combustion engine.

Piezo actuator with improved electrical contacting and employment of such a piezo actuator

Growing community of inventors

Graz, Austria

Gerald Kainz