Epcos Ag

Kyocera Corporation

Continental Automotive Gmbh

Siemens Aktiengesellschaft

Tdk Electronics Ag

Bernhard Doellgast

Carsten Schuh

Markus Puff

Frank Werner

Masahiro Inagaki

Atsushi Ochi

Takami Sakamoto

Harald-Johannes Kastl

Pavol Kudela

Alexander Glazunov

Robert Hoffmann

Oliver Dernovsek

Michael Weilguni

Georg Kuegerl

Johann Schmidt

The present invention relates to a holder () for a piezoelectric component (), having a clamping device () and two contact elements () which contain a conductive rubber material, wherein the clamping device () is designed to clamp the piezoelectric component () between the contact elements () in a closed state, and wherein the contact elements () are in electrical contact with the piezoelectric component () in the closed state of the clamping device ().

Holder for a piezoelectric component

A method for producing a plurality of piezoelectric multilayer components is disclosed. In an embodiment, a method for producing a plurality of piezoelectric multilayer components includes grinding the piezoelectric multilayer components without an addition of an abrasive by rubbing the piezoelectric multilayer components against one another so that a material abrasion of the piezoelectric multilayer components is carried out.

Method for producing a plurality of piezoelectric multilayer components

The present invention relates to a piezoelectric transformer () which is divided in the longitudinal direction (L) into an input region () and an output region (), wherein electrodes () and piezoelectric material () are alternately stacked in the input region () and an alternating voltage can be applied to the electrodes () in the input region (), wherein the output region () comprises piezoelectric material () which effectuates the build-up of an electrical field when alternating voltage is applied in the input region (), wherein the piezoelectric transformer () has an output-side end face () which faces away from the input region (), and lateral edges () which extend in the longitudinal direction (L), and wherein the piezoelectric transformer () is designed for ionizing atoms or molecules at the output-side end face (), thereby avoiding ionization of atoms or molecules at the lateral edges ().

Piezoelectric transformer

A piezoelectric actuator unit which undergoes less change in the amount of displacement and shows high durability in continuous operation under a high voltage and a high pressure over a long period of time is provided. The piezoelectric actuator unit including a multi-layer piezoelectric element having piezoelectric layers and metal layers with the piezoelectric layers and the metal layers being stacked one on another, and a case which houses the multi-layer piezoelectric element, wherein at least one of the plurality of metal layers is stress relieving layer which consists of a plurality of partial metal layers that are scattered throughout the entire region between two piezoelectric layers which adjoin the partial metal layers in the direction of stacking, and voids, and a peel-off section is formed at least in a part of the interface between the stress relieving layer and the piezoelectric layer that adjoins therewith.

Piezoelectric actuator unit having a stress relieving layer and method for manufacturing the same

A multi-layer piezoelectric element includes a stack having metal layers and piezoelectric layers stacked one on another, and a pair of external electrodes formed on the side faces of the stack. At least one of the metal layers is a stress relieving layer having partial metal layers scattered between the two piezoelectric layers and voids. Junction sections are formed between the two piezoelectric layers to join and are disposed on both sides of an imaginary straight line drawn to connect the center of width of one of the external electrodes and the center of width of the other of the external electrodes in a plane including the stress relieving perpendicular to the stacking direction.

Multi-layer piezoelectric element having a plurality of junction sections and injection apparatus employing the same

A multi-layer piezoelectric element having higher durability which experience less decrease in the amount of displacement even when operated continuously over a long period of time under a high pressure and a high voltage is provided. The multi-layer piezoelectric element comprises a plurality of piezoelectric layers and a plurality of internal electrode layers, wherein the piezoelectric layers and the internal electrode layers are stacked alternately one on another, and at least one of the plurality of internal electrode layers contains at least one nitride, titanium nitride or zirconium nitride.

Multi-layer piezoelectric element, injection apparatus using the same and method of multi-layer piezoelectric element

A piezoelectric multilayer component has a base body including a stack of dielectric layers, electrode layers and at least one predetermined breaking layer. The predetermined breaking layer is arranged at least for the most part in an inactive zone of the multilayer component and cracks under specific tensile loads.

Piezoelectric multilayer component

A piezoelectric multilayer component has a base body with a stack of piezoceramic layers and electrode layers arranged one on top of the other in an alternating manner. Neighboring layers of the stack are braced against one another such that stresses run perpendicular to the stacking direction.

Growing community of inventors

Deutschlandsberg, Austria

Bernhard Doellgast