Suspension actuator

US8516914B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Jurgen Osterlanger · Emskirchen, DE
• Ralf Mayer · Weitra, AT
• Manfred Kraus · Kehl, DE
• Thomas Mehlis · Kleinsendelbach, DE
• Stefanie Barthlein · Baudenbach, DE
• Meinhard Schmidt · Kammerstein, DE
• Thomas Dirnberger · Herzogenaurach, DE
• Tobias Noss
• Falk Heinrich · Hoyerswerda - Wojerecy, DE

Key dates

• Filing date: Apr 27, 2009
• Grant date: Aug 27, 2013
• Expiry date: Feb 13, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/18704
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A suspension actuator (1) for positioning a movably mounted component of a motor vehicle suspension, including a first actuator component (4), which is to be connected to the movably mounted component, and a second actuator component (3), which is to be connected to a fixed suspension component, wherein both actuator components can be axially adjusted relative to one another via a ball-type linear drive (5), which includes a threaded spindle (6) and a nut (7) running thereon. Either the nut can be driven via a drive motor (10) for the axial adjustment of the threaded spindle or the spindle can be driven via a drive motor for axial adjustment of the nut. A brake unit (14, 28), which can be actuated by an external force on the suspension side and acts on the nut (7) or the spindle and rotates them, and which builds up a friction torque opposing a nut rotation or the spindle rotation, which acts between the nut (7) or the spindle (6) and a fixed actuator element (22, 35) or between a drive shaft of the drive motor (10) and a fixed actuator element (45) associated therewith, is provided.