Abstract: The invention relates to a transmission device comprising a first gear wheel and a second gear wheel that is rotatably coupled thereto, wherein a damping element acting in the circumferential direction is provided axially between the gear wheels. According to the invention it is provided that the damping element can be tensioned by the gear wheels during the operation of the transmission device.

Abstract: The invention relates to a toothed wheel (1) comprising a toothed rim (2) and a toothed wheel hub (3) provided with an axial toothed wheel hub channel (19) equipped with at least one opening (20, 21) and connecting elements (11, 12, 13) for connecting the toothed wheel hub (3) and the toothed rim (2) in the radial direction and which are disposed at a distance at least in the direction of the circumference.

Abstract: The invention relates to a drive and evaluation unit for displacing an object to be displaced, particularly for raising and lowering a side window in a motor vehicle. The drive includes a commutator motor with a stator having two diametrically opposed permanent magnets. The magnets have cross-sectional shapes of a respective peripheral contour segment, having a radial inner peripheral contour segment which encompasses an armature over a respective inner peripheral angle. The armature is provided with ten grooves spaced around its periphery for holding armature windings that are configured as lap windings. The evaluation unit includes a device for determining the rotational position of the armature by evaluating the ripple count of the armature current. According to the invention, the armature windings are configured as short pitch windings, and the inner peripheral angle of the radial inner peripheral contour segment of at least one of the magnets is between 101° and 111°.

Abstract: A drive unit (10) actuates drives in a motor vehicle with a first housing part (12), in particular a pole pot (12), and a second housing part (14), in particular a gear housing or electronic housing (14, 15), which can be connected with connecting elements (40), wherein the first housing part (12) features receptacles (38) for the connecting elements (40), wherein the receptacles (38) are embodied as centering holes (36) for corresponding centering pins (48), which are arranged on the second housing part (14).

Abstract: Disclosed are a method for operating a piezoelectric drive system (10) used for adjusting movable parts (12, 14), especially in a motor vehicle (13), as well as a piezoelectric drive unit (10) comprising at least one piezo motor (12) that is fitted with at least one piezo actuator (18). At least one frictional element (30) of the piezo motor (12) makes it possible to generate a relative movement in relation to a frictional surface (14) located across from the frictional element (30). The at least one piezo actuator (18) is triggered with an excitation signal (93) by means of an electronic unit (42). A response signal (130) of the drive system (10) is detected using the at least one piezo actuator (18), a change in the load of the drive system (10) being recognized as a result of a change in the response signal (130).

Abstract: Disclosed are a piezoelectric drive unit (10) and a method for operating such a drive unit in order to adjust movable parts (11), especially in a motor vehicle. Said piezoelectric drive unit (10) comprises at least one piezo motor (12) that is fitted with at least one piezo actuator (18). At least one frictional element (30) of the piezo motor (12) makes it possible to generate a relative movement in relation to a frictional surface (14) located across from the frictional element (30). Said at least one frictional element (30) is disposed on a bridging web (28) of the motor (12). The bridging web (28) places the frictional element (30) at a distance (2) from the central axis (89) of the at least one piezo actuator (18), said central axis (89) extending in a longitudinal direction (19).

Abstract: The invention relates to a piezoelectric drive device for adjusting movable parts (11), particularly in a motor vehicle, having a piezo motor (12) having at least one piezo actuator comprising an electric piezo element, wherein at least one friction element (30) is disposed on the piezo motor (12), said element interacting with a friction surface (14) of at least one guide rail (16) opposite said friction element (30) for creating a relative movement, wherein the friction surface is positioned opposite of the friction element (30), wherein the at least one piezo motor (12) is supported on a first side (94) of a bearing bracket (8) and a counter element (98) is disposed on a second opposite side (95) of the bearing bracket (8), which exerts a counter force (97) to the friction element (30) onto the at least one guide rail (16).

Abstract: The invention relates to a toothed wheel (1) comprising a toothed rim (2) and a toothed wheel hub (3) provided with an axial toothed wheel hub channel (19) equipped with at least one opening (20, 21) and connecting elements (11, 12, 13) for connecting the toothed wheel hub (3) and the toothed rim (2) in the radial direction and which are disposed at a distance at least in the direction of the circumference.

Abstract: The invention relates to a drive and evaluation unit for displacing an object to be displaced, particularly for raising and lowering a side window in a motor vehicle. The drive includes a commutator motor with a stator having two diametrically opposed permanent magnets. The magnets have cross-sectional shapes of a respective peripheral contour segment, having a radial inner peripheral contour segment which encompasses an armature over a respective inner peripheral angle. The armature is provided with ten grooves spaced around its periphery for holding armature windings that are configured as lap windings. The evaluation unit includes a device for determining the rotational position of the armature by evaluating the ripple count of the armature current. According to the invention, the armature windings are configured as short pitch windings, and the inner peripheral angle of the radial inner peripheral contour segment of at least one of the magnets is between 101° and 111°.

Abstract: The invention relates to a device for adjusting a vehicle seat, the frame structure (4, 5, 6) of which can be adjusted using drive motors (40) having presupported gear units (39), and the vehicle seat is accommodated on two seat rails (1, 2) arranged parallel to each other. The frame structure (4, 5, 6) of the vehicle seat can be adjusted spherically using lifting elements (8, 9, 10) in two planes separated from each other.

Abstract: Transmission/drive unit (10) having a housing (16, 18, 20) which contains an electric motor (12), which has an armature core (24) and an armature shaft (22) having a worm (26), and a transmission (14) which is arranged downstream of said armature shaft, with the transmission (14) having an output gear (34) which is mounted on a rotary shaft (36), with an electrical connecting plug (58) being arranged on the housing (16, 18, 20) between the armature core (24) and the worm (26), and the housing (16, 18, 20) being formed approximately symmetrically to a plane of symmetry (46) which is arranged transverse to the armature shaft (22) and runs through the connecting plug (58) and through the rotary shaft (36) of the output gear (34).

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).

Abstract: The invention concerns a drive unit (10) for actuating drives in a motor vehicle with a first housing part (12), in particular a pole pot (12), and a second housing part (14), in particular a gear housing or electronic housing (14, 15), which can be connected by means of connecting elements (40), wherein the first housing part (12) features receptacles (38) for the connecting elements (40), wherein the receptacles (38) are embodied as centering holes (36) for corresponding centering pins (48), which are arranged on the second housing part (14).

Abstract: A drive unit (6) has a sealed electronics housing (3) and motor housing (13). The signal receiver (37) is disposed on the brush holder (7) in the motor housing (13) or transmission housing (28). The design of a printed circuit board (49) can therefore be embodied in a simple fashion.

Abstract: A method for controlling an electric drive motor (10) of a motor vehicle adjusting drive by means of applying a variable voltage to it should be improved so that an EMV interference suppression can be inexpensively executed. To this end, a controllable resistor (12, 18, 20, 22) is used, which supplies the voltage applied to the drive motor (10).

Abstract: In an electrical drive mechanism, in particular for motor vehicles, having a commutator motor (14) disposed in a housing (10), which commutator motor (14) has a rotor shaft (17) with a commutator (22) non-rotatably supported on it and has a brush holder (30) affixed to the housing (10), and having a bearing (25) disposed in the vicinity of the commutator (22), which bearing has a bearing bush (34) that encloses the rotor shaft (17) with rotary play and a bearing seat (35) that contains the bearing bush (34), in order to achieve a simple embodiment for the bearing (25), a clamping member (37) is formed onto the brush holder (30) of one piece with it, which clamps the bearing bush (34) in a frictionally engaged, axial fashion in the bearing seat (35) formed in the housing (10) (FIG. 1).

Abstract: In an electric drive unit according to the prior art, a signal receiver, which is disposed on a printed circuit board in an electronics housing, must be brought close to the signal transmitter, which is costly.

Abstract: Disclosed is a commutator motor, in particular an actuating motor for automotive power accessories such as power window units, sunroofs, and the like, having a brush holder attached to the motor housing and having a device for rotation detection (speed and/or rotation direction) of the motor, which has a pulse generator non-rotatably supported on the motor shaft and at least one pulse receiver affixed to the brush holder, in order to precisely affix the pulse receiver to the brush holder without having to use special fasteners, the pulse receiver is disposed in a positively engaging manner in a pocket formed into the base body and the base body encompasses the pulse generator in a contact-free manner.

Abstract: The invention relates to a device for adjusting a seat back (6) of a vehicle seat (4), in which a drive (9) that carries out adjusting processes is integrated. This acts on stagger gears (10, 22), with which the seat back (6) is moved within a range of inclination (13). A torsion element (24) is provided between the stagger gears (10, 22) that compensates the clearance in the stagger gears (10, 22) within a first range of adjustment (18) of the seat back (6) and functions as support for the driver motor within a further range of adjustment (19) of the seat back (6).

Abstract: The invention relates to a transmission-drive unit (10), which has a housing (14) with an opening (26) and with a cap (34); at least two guide lugs (36) are disposed on the cap (34) and for closing the housing (14) are thrust under ribs (29) formed on the housing.