Mercedes-benz Aktiengesellschaft

Daimler Chrysler Ag

Daimler Ag

Daimler-benz Ag

Heinz Schultz

Rudolf Reinhardt

Otto Worner

Otto Woerner

Bernhard Ziegler

Jurgen Pickard

Bernd Koppitz

The invention relates to a method for the unreleasable fastening of at least one component to a basic component with the aid of a bolt projecting through a bore in the component or components, first the bolt being welded electrically with one end face on the surface of the basic component and subsequently being deformed plastically. So that components consisting of any desired materials can be used, it is proposed, according to the invention, that the shank of the bolt, which has a head, be upset, until the underside of the head lies in regions on the surface of the component. Furthermore, an unreleasable connection of one or more components to a basic component is proposed.

Method for unreleasable fastening

In the case of an arrangement of a 2-path torsion damper unit and a friction disk clutch in a hydrodynamic torque converter, a coupling member for the torque transmission from the clutch to the torsion damper unit as well as the latter are fixed in their position with respect to the hub of a turbine wheel, particularly for avoiding wobbling.

Arrangement of a 2-path torsion damper unit and a clutch in a

In an outer shell of a pump impeller of a hydrodynamic torque converter, an axial connecting branch of a hub is joined by friction welding to a bearing sleeve, which exhibits axial driving teeth for driving a recirculating positive-displacement pump. The friction welding apparatus uses a respective receiving fixture for holding the joint parts and a device for machining a weld bead with a tool.

Process and apparatus for cylindrical joint friction welding

In the case of a turbine wheel of a hydrodynamic torque converter having a lockup clutch, a radial flange of a hub is connected on its faces, in each case, by means of friction welding, with one radial flange respectively of an outer shell holding turbine blades and of a disk support which non-rotatably holds clutch disks.

Turbine wheel of a hydrodynamic converter

In a hydrodynamic torque converter, an axial abutment is arranged to support friction discs of a lock-up clutch and a clutch actuator working pressure chamber accommodating an axial piston so as to move with a friction disc carrier. Together with a second friction disc carrier, the friction disc carrier torsionally holds the friction discs in alternating sequence and is also located in a centripetal flow between a pump impeller outlet and a torque converter return conduit.

Hydrodynamic torque converter with lock-up clutch

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.

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Hochdorf, Germany

Heinz Schultz