Thyssen Krupp Ag

Thyssenkrupp Presta Ag

Bernhard Jäger

Marius Breuer

Janick Durot

Michael Bugl

Jochen Klekler

Jan Meyer

Daniel Frei

A length-adjustable steering shaft for a motor vehicle may include a hollow outer shaft with an unround inner cross section, in which an inner shaft is received in a torque-locked and axially movable manner. A profiled sleeve may be arranged between the inner shaft and the outer shaft, and the profiled sleeve may have a fastening portion connected to the inner shaft. The inner shaft may be configured at least in part as a hollow shaft that has an interior that is open towards the end that is inserted into the outer shaft. To reduce the outlay in terms of production and assembly, the fastening portion may extend from the end into the interior of the inner shaft and is connected to an inner surface of the interior.

Length-adjustable steering shaft for a motor vehicle, and profiled sleeve for a steering shaft

A method may be employed to produce a variable-length steering shaft. The method may involve positioning a shaft core within a mold cavity of an injection molding tool coaxially with respect to a mold surface that delimits a toothing region, injecting molten plastic into the mold cavity between the shaft core and the mold surface of the mold cavity, removing a toothed shaft from the injection molding tool after the molten plastic has solidified, providing a hollow shaft and axially inserting the toothing region into an internal toothing of the hollow shaft. To make it possible to provide an improved sliding coating with the least possible manufacturing outlay, the injection of the molten plastic may be performed from one axial end region of the mold cavity.

Method for producing a variable-length steering shaft

A steering shaft for a motor vehicle may comprise a first shaft part and a second shaft part that is telescopable with respect to the first shaft part. The first shaft part may comprise at least one spline region with at least one guide element that is in a form-fit engagement with the second shaft part for guiding the first shaft part relative to the second shaft part during the telescoping and with at least one transmission element that is in engagement with the second shaft part via a loose form-fit for transmitting a torque. The spline region may be at least partially overmolded with a plastic, and the guide element may be formed by the overmolding.

Steering shaft for a motor vehicle

A shaft for a steering system of a motor vehicle may comprise an outer tube and an inner tube that can be telescoped relative to the outer tube. The inner tube may be guided fixedly in the outer tube so as to rotate with the outer tube in order to transmit torque. An inner end of the inner tube may be received in the outer tube. The shaft may further include a pull-out protection mechanism for impeding the inner tube from being pulled out of the outer tube. The pull-out protection mechanism may be disposed at the inner end of the inner tube and may include at least one sprung blocking element for impeding the pulling of the inner tube out of the outer tube in a positively locking manner.

Growing community of inventors

Wangen im Allgäu, Germany

Bernhard Jäger