Abstract: An electrical component has an electrical cable and an electrical functional unit undetachably connected at an end side. The electrical cable has a metallic conductor and a plastic insulating sleeve surrounding the conductor. The electrical functional unit has an insulator housing injection-molded onto the plastic insulating sleeve, and an electrical functional element accommodated in the insulator housing and with which contact is made by the conductor. The plastic insulating sleeve is in a ring zone covered by the insulator housing, structured on its outer surface in an encircling manner by laser processing with a groove pattern and raised portions between the grooves. The insulator housing has a pattern formed during injection-molding by the groove pattern of the insulating sleeve, having webs which enter grooves and are anchored such that the insulator housing and insulating sleeve are permanently sealed from one another in respect of liquid media in the ring zone.

Abstract: An electric motor, especially for a fluid-handling system, comprises an external stator and an internal rotor mounted to rotate around an axis. The said external stator comprises a multiplicity of ferromagnetic pole pieces disposed around the axis and having winding cores extending substantially radially, an injection-molded plastic structure having a bushing and, molded thereon, winding supports enveloping the winding cores, as well as stator windings received on the winding supports. The bushing comprises a sleeve having a closed inner face extending radially inside the pole pieces and an end piece that closes the sleeve in the end region. The rotor is disposed inside the sleeve and mounted in a bearing disposed in the end piece.

Abstract: An electromagnetic linear actuator is provided having a housing having a casing section and an end piece, a coil arrangement having two coils which extend about a common axis, are wound in opposite directions and are offset axially from one another, an armature arrangement mounted displacably in the housing along the axis, and a shaft, which passes through the end piece. A magnet arrangement at the end of the shaft has an axially magnetized permanent magnet and two disc-shaped flux conducting pieces are arranged on a front side. The first coil which faces away from the free end of the shaft has a region with a reduced internal diameter. A core of a magnetically active material is held in the coil. In each end positions of the armature arrangement, at least 50% of the axial length of the magnet arrangement is overlapped by one of the coils.

Abstract: A dynamo-electric machine is provided comprising a stator and a rotor assembly which is rotatably mounted relative to the stator and which has a rotor shaft. The rotor assembly also has a rotor winding through which current flows and which is connected to terminals associated with the stator in an electrically conductive manner without interruption via a slip ring arrangement. The slip ring arrangement comprises at least two pairs of slip rings, each pair having a stator slip ring and a rotor slip ring that permanently rest against each other in a ring-shaped non-cylindrical contact zone. The two rotor slip rings are arranged between the two stator slip rings. Furthermore, each rotor slip ring is arranged on a rotor support disk that is rotationally fixed to the rotor shaft. The position of the two stator slip rings can be changed relative to each other in the axial direction.

Abstract: A flat commutator having a support body, carbon segments, and conductor segments. The support body is formed on a carbon ring disk, which is later separated into carbon segments that are insulated from one another, the support body sitting against the carbon ring disk radially outward, radially inward, and against the end face of the carbon ring disk, the end face lying opposite the brush contact surface. The conductor segments are subsequently applied individually such that a contact pin of each segment penetrates a cavity that extends from the support body surface lying opposite the brush contact surface to the surface of the segments or of the carbon ring disks, the surface lying opposite the brush contact surface; and the free end of the contact pin contacts the surface of the segments or of the carbon ring disk, the surface lying opposite the brush contact surface.

Abstract: A dynamo-electric machine is provided comprising a stator and a rotor assembly which is rotatably mounted relative to the stator and which has a rotor shaft. The rotor assembly also has a rotor winding through which current flows and which is connected to terminals associated with the stator in an electrically conductive manner without interruption via a slip ring arrangement. The slip ring arrangement comprises at least two pairs of slip rings, each pair having a stator slip ring and a rotor slip ring that permanently rest against each other in a ring-shaped non-cylindrical contact zone. The two rotor slip rings are arranged between the two stator slip rings. Furthermore, each rotor slip ring is arranged on a rotor support disk that is rotationally fixed to the rotor shaft. The position of the two stator slip rings can be changed relative to each other in the axial direction.

Abstract: A flat commutator having a support body, carbon segments, and conductor segments, wherein the support body is formed on the carbon ring disk, which is later separated into carbon segments that are insulated from one another, the support body sitting against the carbon ring disk radially outward, radially inward, and against the end face of the carbon ring disk, said end face lying opposite the brush contact surface. The conductor segments are subsequently applied individually such that a contact pin of each segment penetrates a cavity that extends from the support body surface lying opposite the brush contact surface to the surface of the segments or of the carbon ring disks, said surface lying opposite the brush contact surface; and the free end of said contact pin contacts the surface of the segments or of the carbon ring disk, said surface lying opposite the brush contact surface.

Abstract: The invention relates to a closed loop conductor blank for a drum commutator (T). The conductor segments are interconnected via bridge sections. One end face of the conductor segments comprises connecting projections (7) as well as inward-facing anchor ties for anchoring said conductor segments in a support element (1). The first anchor ties (9a, 9b), which are produced by the partial splitting of material on the radially inner surface of the strip in the vicinity of the conductor segments (4), form K-shaped pairs of anchor ties. In addition, second anchor ties (10a, 10b) are provided, said ties being C-shaped and arranged substantially on the end face and being produced by the inward deformation of anchoring projections arranged on the edges of the strip.

Abstract: A rotor exhibits a carbon commutator (4). For the manufacture of the rotor, an insulating support (9) is positioned on the rotor shaft (1). The insulating support (9) features lugs (13), around which the winding ends (8) of the rotor coils (3) are wound; after the removal of the insulation, the winding ends (8) are provided with an electrically conductive adhesive. The commutator (4) is the put on the lugs (13) with the winding ends (8). By means of this process, the winding ends (8) are mechanically and electrically directly connected to the corresponding commutator segments.

Abstract: A commutator for an electric machine comprises a support member made from insulating molding compound, a plurality of metal conductor segments (3), disposed thereon in evenly spaced manner around the commutator axis, with terminal elements disposed thereon for a rotor winding, and an interference-suppression device, to which the conductor segments are connected in electrically conductive manner.

Abstract: A method for improving the electrical connection properties of the surface of a product made from a polymer-matrix composite comprising a filler comprises the following steps:—heating of the surface of the product to a first treatment temperature above the ambient temperature;—first plasma treatment of the surface whereby removal of surface polymer and uncovering of filler is effected by oxygen radicals;—cooling down of the plasma treated surface of the product to a second treatment temperature below the first treatment temperature;—second plasma treatment of the surface created by the first plasma treatment whereby activation of the surface is effected by oxygen radicals;—depositing a metallization on the surface created by the second plasma treatment.

Abstract: A commutator for an electric machine comprises a support member made from insulating molding compound, a plurality of metal conductor segments (3), disposed thereon in evenly spaced manner around the commutator axis, with terminal elements disposed thereon for a rotor winding, and an interference-suppression device, to which the conductor segments are connected in electrically conductive manner.

Abstract: In a plane commutator with a support member, a plurality of conductor segments and an equally large number of carbon segments connected interlockingly and electrically conductively to the conductor segments, each carbon segment is provided with an annular projection disposed opposite the brush running surface, the end face of the said projection being in contact with a corresponding annular contact face of the associated conductor segment. The annular contact faces are each surrounded by a contact ring of the conductor segment in question, which segment is in gap-free contact with the associated annular projection. On each conductor segment, there projects a contact pin, which engages without gaps in a corresponding bore of the associated annular projection of the carbon segment in question. Thus the carbon segments are each connected electrically conductively via the outer circumferential face, the annular end face and the inner circumferential face of the annular projection to the conductor segments.

Abstract: A commutator for an electric machine comprises a support member (1) made from an insulating molding compound, a plurality of metal conductor segments (3) disposed thereon in evenly spaced manner around the commutator axis (2), with terminal elements disposed thereon for a rotor winding, and an interference-suppression device (9, 9?), to which the conductor segments (3) are connected in electrically conductive manner and which comprises a number of individual interference-suppression elements (10) corresponding to the number of conductor segments (3), wherein the conductor segments (3) are provided with contact tabs (18), which are respectively connected, at a distance from their root points (19), via associated contact points (23), to the adjoining contact poles (24) of two neighboring interference-suppression elements (10).