Drive arrangement for a motor vehicle door or hatch which can be moved by a motor

Drive arrangement for a motor vehicle, comprising

• a door or hatch which is movable by a motor,
• a planet gear, the planet gear having a drive shaft for coupling to the motor so as to be driven thereby, a driven shaft coupled to the motor vehicle door or hatch, a sun wheel, a planet carrier with planet wheels and a ring gear and
• a brake device with a brake,
• wherein one of the elements which include the sun wheel, planet carrier and ring gear is coupled to the drive shaft, a second of the elements which include the sun wheel, planet carrier and ring gear is coupled to the driven shaft and the brake device acting on a third of the elements which include the sun wheel, planet carrier and ring gear for braking or blocking the third element in a braking position thereof and the brake device enabling the third of the elements and thereby the motor vehicle door or hatch to be movable by hand unhindered by the Drive arrangement in a release position of the braking device;
• wherein the drive shaft is coupled to the driven shaft in said braking position for enabling the motor vehicle door or hatch is able to be moved by the motor,
• wherein the brake device has a brake drive which is separate from said motor and which is operable for moving the brake device between said braking and release positions, and
• wherein the brake and the brake drive are made jointly as an eddy current brake.

Drive arrangement for a motor vehicle, comprising

• a door or hatch which is movable by a motor,
• a planet gear, the planet gear having a drive shaft for coupling to the motor so as to be driven thereby, a driven shaft coupled to the motor vehicle door or hatch, a sun wheel, a planet carrier with planet wheels and a ring gear and
• a brake device with a brake,
• wherein one of the elements which include the sun wheel, planet carrier and ring gear is coupled to the drive shaft, a second of the elements which include the sun wheel, planet carrier and ring gear is coupled to the driven shaft and the brake device acting on a third of the elements which include the sun wheel, planet carrier and ring gear for braking or blocking the third element in a braking position thereof and the brake device enabling the third of the elements and thereby the motor vehicle door or hatch to be movable by hand unhindered by the Drive arrangement in a release position of the braking device;
• wherein the drive shaft is coupled to the driven shaft in said braking position for enabling the motor vehicle door or hatch is able to be moved by the motor,
• wherein the brake device has a brake drive which is separate from said motor and which is operable for moving the brake device between said braking and release positions, and
• wherein the brake device is coupled via a further gearing to the third of the elements which include the sun wheel, planet carrier and ring gear to produce said braking or blocking.

Drive arrangement for a motor vehicle, comprising

• a door or hatch which is movable by a motor,
• a planet gear, the planet gear having a drive shaft for coupling to the motor so as to be driven thereby, a driven shaft coupled to the motor vehicle door or hatch, a sun wheel, a planet carrier with planet wheels and a ring gear and
• a brake device with a brake,
• wherein one of the elements which include the sun wheel, planet carrier and ring gear is coupled to the drive shaft, a second of the elements which include the sun wheel, planet carrier and ring gear is coupled to the driven shaft and the brake device acting on a third of the elements which include the sun wheel, planet carrier and ring gear for braking or blocking the third element in a braking position thereof and the brake device enabling the third of the elements and thereby the motor vehicle door or hatch to be movable by hand unhindered by the Drive arrangement in a release position of the braking device;
• wherein the drive shaft is coupled to the driven shaft in said braking position for enabling the motor vehicle door or hatch is able to be moved by the motor,
• wherein the brake device has a brake drive which is separate from said motor and which is operable for moving the brake device between said braking and release positions, and
• wherein the brake drive comprises a permanent magnet which generates a magnetic field that causes a force to act on the brake in a direction toward the braking position, and an electromagnet which is triggerable for producing a magnetic field that acts to weaken or intensify the magnetic field generated by the permanent magnet depending on the polarity of the electromagnet when triggered.