Hydrostatic actuator and arrangement of a hydrostatic actuator in a motor vehicle

US9784256B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Viktor Franz · Karlsruhe, DE
• Matthias Ehrlich · Laufenburg (Baden), DE
• Norbert Esly · Schömberg, DE
• Matthias Gramann · Neunkirchen, DE
• Juergen Gerhart · Appenweier, DE
• Julian Botiov · Laufenburg (Baden), DE

Key dates

• Filing date: Oct 11, 2012
• Grant date: Oct 10, 2017
• Expiry date: Feb 8, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K7/06
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydrostatic actuator and an arrangement for attaching it to a receiving component are provided. The hydrostatic actuator has a master cylinder containing a housing and a piston movable axially within the housing which acts on a pressure chamber filled with a pressurizing agent. The piston is driven by a rotary-driven electric motor having a stator and a rotor, by a rolling planetary transmission that converts the rotary drive to an axial motion. In order to be able to produce such a hydrostatic actuator with little need for construction space, cost-effectively and with better quality, a supporting of the rolling planetary transmission is simplified, and the cooling and shielding of an electronic controller and the pressure behavior of the hydrostatic actuator is improved.