The term “displacement element” is to be understood comprehensively in the present case. It includes hatchbacks, trunk lids, engine hoods, doors, in particular side doors, cargo space floors, or the like of a motor vehicle.
However, the drive configuration under discussion is primarily used in hatchbacks and side doors in motor vehicles. It is used for the motorized displacement of the respective displacement element in the closing direction and in the opening direction. It is typically important that the drive configuration also permits manual displacement operation in addition to the motorized displacement operation. The manual displacement operation is significant in particular in case of emergency, for example, in the event of a crash or power failure.
The known drive configuration (DE 20 2005 007 155 U1), from which the invention proceeds, is associated with a hatchback. The drive configuration is equipped with two spindle drives, which each have, in a compact module, a drive motor, an intermediate gearing having clutch, and a spindle-spindle nut gearing. A spring configuration is provided in the respective module, which counteracts the weight force of the associated hatchback. The known drive configuration further has a drive controller, which is used to activate the two drives, in particular the two drive motors. The drives are not designed as self-locking, so that manual operation is implemented in a simple way.
Hatchbacks of significant size and/or significant weight can be adjusted by motor using the known drive configuration. This opens up new degrees of freedom in the design of such hatchbacks. However, an increased risk it event of a failure of drive components is also connected to the increase of the weight.