Drive device for displacing a vehicle part, comprising a magnetic braking unit
AssigneeBrose Fahrzeugteile SE & Co. Kommanditgesellschaft, Bamberg
InventorFlorian Wölker
Life of this patent
Estimating the term…
Abstract
It is provided a driving device for adjusting a vehicle part, in particular a tailgate, comprises an electric drive for driving the vehicle part, with an output shaft for transmitting an adjusting force to the vehicle part, and a first braking device operatively connected to the output shaft, which includes at least one permanent magnet element and is configured to provide a braking force for arresting the vehicle part in a currently adopted position. There is also provided a second braking device that is configured to switch the electric drive into a generator braking mode in order to at least partly feed a power generatorically produced by the drive back into the drive and thereby provide a braking force for braking a movement of the vehicle part.
Claims20
A driving device for adjusting a vehicle part, the driving device comprising:
- an electric drive for driving the vehicle part, the electric drive comprising an output shaft for transmitting an adjusting force to the vehicle part;
- a first braking device operatively connected to the output shaft, the first braking device including at least one permanent magnet element and being configured to provide a braking force for arresting the vehicle part in a currently adopted position, wherein the at least one permanent magnet element comprises a first permanent magnet element rotatable about a longitudinal axis relative to a stationary portion of the first braking device, the first permanent magnet element being operatively connected to the output shaft such that the first permanent magnet element is rotated relative to the stationary portion during a rotary movement of the output shaft;
- and
- a second braking device that is configured to switch the electric drive into a generator braking mode in order to at least partly feed a power generatorically produced by the electric drive back into the electric drive and thereby provide a braking force for braking a movement of the vehicle part.
A method for operating a driving device for adjusting a vehicle part, the method comprising:
- driving the vehicle part via an electric drive such that an output shaft of the electric drive transmits an adjusting force to the vehicle part,
- providing a braking force for arresting the vehicle part in a currently adopted position via a first braking device operatively connected to the output shaft, the first braking device including at least one permanent magnet element comprising a first permanent magnet element rotatable about a longitudinal axis relative to a stationary position of the first braking device, the first permanent magnet element being operatively connected to the output shaft such that the first permanent magnet element is rotated relative to the stationary portion during a rotary movement of the output shaft;
- and
- during a movement of the vehicle part, providing, via a second braking device, a braking force for braking the movement of the vehicle part by switching the electric drive into a generator braking mode.
Dependencies are inferred from the claim text.