Actuator device and process for producing an actuator device

US9418764B2 · kind B2 · utility

Assignee

• ETO MAGNETIC GMBH · DE

Inventors

• Markus Laufenberg · Stockach, DE
• Thomas Schiepp · Seitingen-Oberflacht, DE

Key dates

• Filing date: Aug 8, 2012
• Grant date: Aug 16, 2016
• Expiry date: Sep 13, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49874
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Actuator device having an expansion unit, which includes a magnetic shape memory alloy material, and a spring unit which interacts therewith in a restoring manner, wherein at least one spring of the spring unit is assigned to the expansion unit, which is designed to perform an expansion movement along an expansion direction, in such a way that the spring can exert a restoring spring force counter to the expansion direction on the expansion unit, and wherein the spring is set up and/or predetermined in its spring characteristic curve properties in such a way that a spring force profile of the spring unit along a stroke range, determined by an expansion force profile of the expansion unit and a restoring spring force profile, of the expansion movement does not form a continuously rising curve, and/or the spring force profile, with respect to a continuously rising curve, extends and/or increases the stroke range.