Mannesmann Vdo Ag

Siemens Aktiengesellschaft

Gerhard Pfanzer

Alfred Wipfler

Stefan Pfeiffer

Helmut Pfalzgraf

Michael Helmer

Hans-Peter Hoffmann

Andreas Funk

Jens Luebben

Mark Schiebelhuth

An electric drive for a parking brake is disclosed, the brake having a rotationally driven screw nut which is in engagement with two spindles which are aligned with one another, have threads running in opposite directions, and which are fixed in the rotational direction, can be moved in a translatory fashion and are each provided with a cable holder for connecting to brake elements. Here, one of the two spindles is a hollow spindle whose internal diameter is greater than the external diameter of the other spindle so that when the screw nut rotates, the spindle on one side can be retracted in a telescopic fashion into the hollow spindle on the other side.

Electronic drive of a parking brake

A drive device for a moveable part, in particular a hinged side window of a vehicle, with an actuating drive and with a threaded piece which is driven by the actuating drive and which meshes with an associated threaded piece, the associated threaded piece moving the part, there being provision, in order to reduce undesirable noises, for individual flights of at least one threaded piece ( ) to be designed in such a way that they come to bear under the effective force in the respectively associated flights of the other threaded piece.

Drive device, for a movable part, in particular a hinged side window of a vehicle

An adjusting device serves for moving a moveable part into various positions, for example a side ventilator window of a motor vehicle. A servomotor ( ) drives a spindle drive ( ) which comprises essentially a spindle ( ) having an external thread ( ) and a sleeve part ( ) which surrounds the spindle and has a corresponding internal thread ( ). When acted upon by an external force, axial play in the region of the spindle drive ( ) may lead to noise being produced; in order to avoid the noise, one ( ) of the two threads comprises separate threaded parts ( ), and an elastically prestressable element ( ) is provided with the aid of which an axial force can be produced between the two threaded parts ( ). The axial force causes the two threaded parts ( ) each to bear against opposite flanges of the external thread ( ), so that the axial thread play is eliminated.

Adjusting device

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Bad Camberg, Germany

Gerhard Pfanzer