Servomotor assisted rack-and-pinion steering or control system

US5711396A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Wolfgang Joerg · Stuttgart, DE
• Jaromir Bordovsky · Winnenden, DE
• Aydogan Cakmaz · Stuttgart, DE
• Hubert Heck · Goldkronach, DE
• Arno Roehringer · Ditzingen, DE
• Claus Gall · Fellbach, DE
• Reinhold Abt · Bad Liebenzell, DE
• Rainer Strauss · Kaarst, DE
• Karl-Hans Koehler · Wernau, DE

Key dates

• Filing date: Oct 31, 1995
• Grant date: Jan 27, 1998
• Expiry date: Oct 31, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H25/2204
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rack-and-pinion steering or control system with a servomotor, especially an electric motor, which can be coupled to the rack by way of a mechanical transmission and runs continuously in one direction is provided. The rack is designed over a certain area as a screw which interacts with a recirculating ball sleeve which can be driven in two directions of rotation by the motor. To control the direction of rotation, use is made of normally disengaged clutches which can be controlled as a function of a small displacement of the recirculating ball sleeve.