Epcos Ag

Siegfried Fellner

Johann Kreiter

Franz Rinner

Axel Pecina

Marion Ottlinger

Martin Galler

Robert Krumphals

Harald Kastl

Georg Kügerl

Herbert Thanner

Wolfgang Athenstaedt

Peter Gerletz

Zeljko Maric

Stefan Brantweiner

Ivan Jagust

Zdravko Mijocevic

Herbert J Thanner

A multi-layer component () is specified, comprising a main body () with an external contact () arranged thereon, a further contact () for electrically contacting the multi-layer component (), and a connecting element () for connecting the external contact () and the further contact (), wherein the connecting element () is embodied in such a way that a decoupling of mechanical stresses that occur in the further contact () from the external contact () is brought about.

Multi-layer component having an external contact

The invention relates to an actuator unit, which comprises a piezoactuator () having a first end face (') and a second end face (&#x2032;). The actuator unit further comprises a sleeve () for accommodating the piezoactuator (), wherein the sleeve () has a first end face () and a second end face (). The actuator unit further comprises a potting compound () which surrounds the piezoactuator (). The piezoactuator () and the potting compound () are introduced into the sleeve (). The potting compound () extends no further than the first end face (&#x2032;) of the piezoactuator (). The invention further relates to a method for manufacturing an actuator unit and a sleeve for accommodating a piezoactuator.

Actuator unit, method for producing an actuator unit, and sleeve for accommodating a piezoactuator

The invention relates to a method for producing an actuator unit comprising a piezoactuator (), a sleeve () having a first end face () and a second end face (), and a potting compound (). The method comprises: inserting the piezoactuator () into the sleeve (), wherein the piezoactuator is inserted into the sleeve () from the side of the sleeve () having the first end face (); arranging a filling opening of a filling element () in an axial position near the axial position of the second end face () of the sleeve (); filling a hollow space between the inner side of the sleeve () and the piezoactuator () with the potting compound () via the filling opening of the filling element (), such that the potting compound () extends maximally to a first end face (') of the piezoactuator (). The invention further relates to a sleeve () for receiving a piezoactuator ().

Method for producing an actuator unit and sleeve for receiving a piezoactuator

A piezoelectric actuator of a multilayer design has a stack of piezoelectric layers and electrode layers arranged in between. The electrode layers are contacted by way of two outer electrodes, which have a multiplicity of wires. The outer electrodes are fastened in fastening regions on first side faces of the stack and are led around the edge of the stack that is closest to the respective fastening region.

Piezoelectric actuator with outer electrode

A piezoelectric actuator unit includes a piezoactuator and a casting compound enclosing the piezoactuator. The casting compound is disposed in a sleeve that includes a hydrophobic material.

Piezoelectric actuator unit including a casting compound disposed in a sleeve

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St. Georgen, Austria

Siegfried Fellner