Daimler Chrysler Ag

Daimler Ag

Olaf Sättler

Thorsten Meyer

Torsten Harms

Björn Spangemacher

Bernd Freiwald

Karol Lednicky

Hartmut Kahnert

The present invention concerns a steering shaft () of a steering column () and () for a motor vehicle steering assembly (), wherein the steering shaft () includes a cylinder body () and a piston rod body () inserted telescopically therein, and on one end is connectible with a steering wheel () and at the other is connectible via a steering coupling () with a steering gear (). The assembly of the steering shaft () can be simplified thereby, that the steering shaft () includes at least one () pneumatic connection (), which communicates with a cylinder space (), which is provided in the cylinder body () and which cylinder space is axially bordered from the piston rod body (), in such a manner, that pressure actuation of the cylinder space () drives the piston rod body () to extend from the cylinder body ().

Shaft for a motor vehicle steering column and associated assembly process

A joining connection between a circumferentially closed hollow profile and an add-on part which is provided with a passage opening and consists of a material of lower strength than the material of the hollow profile is disclosed. Additionally, a method for producing the connection and to a steering column having this joining connection is disclosed. In order to connect a hollow profile and an add-on part having lower strength than the hollow profile non-releasably to each other in a simple, reproducible and reliable manner, and furthermore in order to reliably fit a holder as an add-on part to the casing tube of the steering column, where the holder has a lower strength than the casing tube, with a low outlay on components and costs and with exact, reproducible positioning of the two joining partners with respect to each other in the joining connection, a recess is provided which is spaced away from the end sides of the add-on part on the inside of the passage opening, to slide the add-on part with its passage opening onto the hollow profile and to jam it to the hollow profile in this sliding-fit position by a local expansion of the hollow profile. The expansion being formed by internal high-pressure deformation at the location of the recess.

Joining connection, method for producing the same, and a steering column for motor vehicles comprising such a joining connection

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Asendorf, Germany

Olaf Sättler