Abstract: An electric motor for actuators in a motor vehicle has an armature shaft, which is supported in a pole housing that includes a jacket and a bearing cover on at least on one end face for accommodating a bearing for the armature shaft, and at least one radial recess is formed in the pole housing, which, once the pole housing has been fully assembled, is suitable for engagement by at least one radial fastening segment of a transmission interface in the pole housing, in order to attach the electric motor to the transmission interface.

Abstract: The invention relates to an electric motor (10) and gearing/drive unit (12) for actuators in a motor vehicle, comprising an armature shaft (32) mounted inside a pole casing (18), which has a jacket (20) and, on at least one face (22, 24), a bearing cover (26, 28) for accommodating a bearing (30) for the armature shaft (32). At least one radial recess (42) is formed on the pole casing (18) that, after the complete assembly of the pole casing (18), is suited for the insertion of at least one radial fastening web (53) of a gearing interface (15) inside the pole casing (18) in order to fasten the electric motor (10) to the gearing interface (15). The invention also relates to a method for producing an inventive gearing/drive unit.

Abstract: A commutator machine and a sliding body holder for electrically contacting a rotor has at least one sliding body and a leaf spring which centrally supports the sliding body and is fixed on its end to a carrier which is stationary relative to the rotor and which generates a radially oriented contact-pressure force at the sliding body for pressing the sliding body against the rotor. To attain good noise decoupling of the sliding body with regard to the carrier, the geometry of the leaf spring is designed such that the sliding body and the carrier are largely vibrationally decoupled from one another.

Abstract: An electric machine, having an armature including an armature lamination that supports a winding and having a housing that accommodates at least one magnet, which is embodied at least in the form of an annular magnet segment. The armature lamination protrudes axially beyond the at least one magnet. This has the advantage of permitting the electric machine to be more compactly designed, thus permitting an appreciable reduction in costs.

Abstract: A connecting device (1) is used to mechanically connect a motor housing (2) of a motor (5) to a transmission housing (3) of a transmission (7). The motor (5) acts on the transmission (7) via a motor shaft (6). The connecting device (1) has a connecting element (15, 26), which can connect the motor housing (2) indirectly to the transmission housing (3). The connecting element (15, 26) is embodied so that when the motor housing (2) moves relative to the transmission housing (3) in a rotating fashion around an axis (25) predetermined by the motor shaft (6), the connecting element (15, 26) can be at least partially deformed.

Abstract: A commutator for an electrical machine, which has a plurality of laminations that have contact faces and are separated from one another by slots in which, in the laminations, at least one groove is provided in the contact face, which groove extends essentially in the longitudinal direction of the respective lamination. As a result, the frequency with which the brushes are excited by the commutator can be increased, which has a favorable effect on noise.

Abstract: Rotors or stators of this kind are cut out from rolled sheet metal with a predominant magnetic direction and are stacked to form a rotor or stator lamination bundle. In order to largely compensate for a magnetic anisotropy of the rotor or stator lamination packet, when the sheet metal blanks are asymmetrical (A, B), they are cut out from the rolled sheet metal rotated in relation to one another with regard to the predominant magnetic direction. The process according to the invention can be used for electric machine rotors or stators comprised of sheet metal blanks.

Abstract: A low-noise, torque compensated motor with an electrically commutated stator and a permanent magnet rotor which is achieved solely through a spacing of the air gap surfaces of the stator if these surfaces are at least partially provided with fine gearing teeth and pole pairs are formed in which at least part of the fine gearing teeth are respectively offset in relation to one another.

Abstract: An electronically commutated motor includes a stator carrying a plurality of winding strands and a rotor in which the individual winding strands are controlled via power amplifiers in staggered periods of time, the periods being subdivided into control time and idle time. To reduce the power loss in the power amplifiers and to increase the efficiency in the range of high currents, that the control times are subdivided into an initial time segment and a final time segment. At low motor currents pulsing occurs only in the initial or final time segments in pulse width modulation, while at high currents complete switching through takes place in the initial time segments and additionally in the final time segment for a more or less long period of time or in the final time segments and additionally in the initial time segments for a more or less long period of time.

Abstract: An electronically commutated motor is described that has a stator, carrying at least two winding phases, multiple magnet poles and grooves and a rotor, in which a defined position between the rotor and the stator can be detected by way of a position sensing device. A rotation speed and power output of the motor can easily be influenced by the fact that the magnet poles have regions with air gaps of different heights from the rotor; and that onset times of a temporally successively occurring energization of the at least two winding phases can be varied in terms of the position between the rotor and the stator and/or the energization duration of the at least two winding phases.

Abstract: An electric motor for moving or adjusting parts of vehicles such as windshield wipers and sunroofs have switching devices for shutting of the electric motor in at least one predetermined position of the movable part, for example also for shutting off the electric motors when the parts are disposed in their end positions. For this purpose, the switching devices have at least one permanent magnet that is for the actuation of switching contacts and, for example, is disposed on a switching gear, and have at least one sensor that is sensitive to magnetic fields. Different switching gears are stored for different sizes of parts to be moved. The invention sets forth a switching gear as an annular disk made of a magnetizable material, wherein the material is preferably comprised of a permanent magnet powder and a thermoplastic bonding. Such an annular disk is magnetized either in the immediate vicinity of an associated drive device or when installed in this drive device.

Abstract: In known retaining devices for electric motors, rotationally flexible retaining elements on the order of leaf springs are provided between a receiving housing and the electric motor and serve to decouple noise of the electric motor. The novel retaining device for an electric motor includes retaining elements that extend axially between a receiving housing and the motor housing. These retaining elements enable low-frequency decoupling below the frequencies to be decoupled; on the occurrence of natural resonance when the electric motor is turned on and off or there are shocks from outside, the torsional motion of the retaining elements is limited by stop elements. The retaining device is especially well suited to electric motors of blowers.