Abstract: The invention relates to an electric machine comprising a permanent magnet arrangement and an electromagnetic arrangement. The electromagnetic arrangement comprises a first number of excitation coils, each excitation coils being wound around a pole core. The permanent magnet arrangement comprises a second number of magnet segments formed of a permanently magnetic material. An air gap is arranged between the electromagnet arrangement and the permanent magnet arrangement. The magnet segments have a permanent magnetisation in a first magnet segment volume. At least one magnet segment comprises a demagnetised region in a second magnet segment volume.

Abstract: The invention relates to an electric motor (10) and to a method for producing said electric motor, especially for adjusting mobile parts in a motor vehicle. Said electric motor comprises a collector (36), arranged on an armature (38) and electrically contacted via hammer brushes (12). The armature (38) is surrounded by a lower housing part (32) and an upper housing part (34) which can be assembled in a radial direction (50) in relation to the armature (38). The hammer brushes (12) comprise one fastening element (26) each which engages directly in a seat (30) of the lower or upper housing part (32, 34).

Abstract: The invention relates to a drive unit (10) and to a method for producing the same, in particular for adjusting moveable parts in a motor vehicle, having a metal driveshaft (17) which is mounted in a housing (11) by means of at least one radial bearing element (28), wherein the driveshaft (17) has two end sides (42), at least one of which, as an axial stop, is supported on the housing (11) by means of a stop disk (44), wherein the stop disk (44) is produced from a self-lubricating material (49) which lubricates the axial stop over the entire service life of the drive unit (10) without the use of additional, separate lubricants.

Abstract: The invention relates to a load-torque lock (10) for automatic locking of load-side torques in the event of a drop or discontinuation of a drive-side torque, comprising a housing (11) which is fixed to a chassis and axially oriented means of attack (19), an output shaft (34) and axially oriented means of attack (37) and pivotally mounted clamping bodies (24) which are arrested or clamped by load torques on the housing (11) and are cancelled out by drive-sided torques from the housing bore. In order to obtain a powerful, robust and compact load-torque lock, the means of attack (37) of the output shaft (34) are arranged such that they cooperate with the means of attack (19) of the drive shaft (17) in the event of drive-side torques and cooperate with the clamping bodies (24) in the event of output-side torques.

Abstract: A drive unit, in particular for adjusting movable parts in a motor vehicle, has a housing including an opening to the surrounding, in which a gas-permeable, liquid-impermeable diaphragm is installed, the housing includes a first housing part with a circumferential collar, and a second housing part which closes off the first housing part, on the second housing part the opening is integrally formed with a circumferential mating surface, which presses the diaphragm against the collar of the first housing part after the housing is closed, and a sealing element located between the diaphragm and the mating surface is integrally non-detachably formed on the first and/or second housing part.

Abstract: The invention relates to a load-torque lock (10) for automatic locking of load-side torques in the event of a drop or discontinuation of a drive-side torque, comprising a housing (11) which is fixed to a chassis and axially oriented means of attack (19), an output shaft (34) and axially oriented means of attack (37) and pivotally mounted clamping bodies (24) which are arrested or clamped by load torques on the housing (11) and are cancelled out by drive-sided torques from the housing bore. In order to obtain a powerful, robust and compact load-torque lock, the means of attack (37) of the output shaft (34) are arranged such that they cooperate with the means of attack (19) of the drive shaft (17) in the event of drive-side torques and cooperate with the clamping bodies (24) in the event of output-side torques.

Abstract: The invention relates to an electric motor (10) and to a method for producing said electric motor, especially for adjusting mobile parts in a motor vehicle. Said electric motor comprises a collector (36), arranged on an armature (38) and electrically contacted via hammer brushes (12). The armature (38) is surrounded by a lower housing part (32) and an upper housing part (34) which can be assembled in a radial direction (50) in relation to the armature (38). The hammer brushes (12) comprise one fastening element (26) each which engages directly in a seat (30) of the lower or upper housing part (32, 34).

Abstract: The invention relates to a plastic gear, particularly a worm gear, with teeth disposed side by side in circumferential direction. Provision is made according to the invention for the surface of at least one of the teeth to be structured in such a way as to constitute a grease depot. The invention additionally relates to a drive as well as to a method for introducing a structure, which constitutes a grease depot, into the surface of at least one tooth of a plastic gear.

Abstract: The invention relates to a drive unit (10), especially for adjusting mobile parts in a motor vehicle, and to a method for producing such a drive unit. The drive unit comprises a housing (12) which is provided with an opening (18), leading towards the surroundings (23), on which a gas-permeable, liquid-impermeable membrane (20) rests. The housing (12) has a first housing part (14) with a peripheral collar (26) and a second housing part (16) obturating the first housing part (14). The opening is injection-molded to the second housing part (16) with a peripheral contact surface (28) which forces the membrane (20) against the collar (26) of the first housing part (14) once the housing (12) is closed.

Abstract: The invention relates to a gearbox drive unit (1), especially for adjusting movable parts in a motor vehicle. Said unit comprises at least one housing part (2) and at least one fixing dome (6, 7, 8, 9), which is used to secure the gearbox drive unit (1). The housing part (2) comprises a first connection point (45) and at least one other second connection point (46), whereon the fixing dome (6, 7, 8, 9) can be placed. The fixing dome (6, 7, 8, 9) is connected to the housing part (2) at either the first connection point (45) or at the second connection point (46) according to a screw image for fixation of the gearbox drive unit (1).