Shifting device for shifting a motor vehicle gear box

US7950323B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Rudolf Kauffeldt · Bad Schussenried, DE
• Hans-Joachim Martin · Kreßbronn, DE
• Gerhard Gumpoltsberger · Friedrichshafen, DE
• Michael Ebenhoch · Friedrichshafen, DE
• Wolfgang Rieger · Friedrichshafen, DE
• Michael Drabek · Brandenburg, DE
• Stefan Csajagi · Eriskirch, DE

Key dates

• Filing date: Feb 2, 2007
• Grant date: May 31, 2011
• Expiry date: Jan 25, 2028

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2063/325
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A shifting device (1) for shifting a motor vehicle transmission with a shift selector shaft on which a plurality of shift elements (2) such as shift forks or shift rockers (3) are arranged and can be displaced to carry out a shifting operation. The shifting device (1) includes one hydraulic shift cylinder (5, 11, 18, 25), that can be actuated from both sides, with a piston (9, 15, 16, 19, 26) that can be displaced within a cylinder housing (6) and which is actively connected with a shift element (2) to be actuated. To simplify a shifting device (1) of this type, the piston (9, 15, 16, 19, 26) has a piston rod (10, 17, 23, 29) that follows the movement of the piston (9, 15, 16, 19, 26) and can be connected directly to the shift element (2) in a detachable manner.