Lock-up clutch with a front-mounted piston damper module for a hydrodynamic flow unit

US4580668A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Jurgen Pickard · Wernau, DE
• Heinz Schultz · Biberach an der Riß, DE

Key dates

• Filing date: Sep 28, 1983
• Grant date: Apr 8, 1986
• Expiry date: Sep 28, 2003

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2045/0294
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a lock-up clutch, an annular piston has a clutch friction disc connected to the annular piston and a seal hub, which is connected to the annular piston and rotatably slipped over a counterseal hub. A damper using a spring and a damper supplying frictional resistance are located on the end face of the annular piston facing towards the casing shell. The dampers are connected, on the drive side, with at least one damper drive part connected to the annular piston and, on the output side, with a radially inner clutch hub positively engaged to a rotor hub connected to the turbine rotor. The pressure surface of the annular piston is designed independently of the dimensions of the dampers because the counterseal hub is fixed on the rotor hub. A front hub protrusion connected rotationally solidly with the clutch hub and facing the rotor hub centers damper discs. An axially small space exists when the counterseal hub is located at a transition between the outer shell and the connecting flange and the hub protrusion facing the rotor hub is located radially inside the counterseal hub.