Abstract: A geared motor, comprising a direct current motor having a motor shaft, a planetary gear unit with sun wheels, planetary gears, a ring gear, a gear unit casing, a gear unit output shaft, and pinion cages. A plate axially holds the sun wheels, the planetary gears and the pinion cages in the gear unit casing. The plate has a shaft passage to form a preinstallation module. One of the sun wheels has a central shaft receptacle which is formed with a positive fit contour acting in the rotation direction and coupled in a rotationally fixed manner with the motor shaft via a corresponding positive fit contour; and wherein, in the preinstallation module, an engagement of teeth of one of the sun wheels with teeth of one of the planetary gears is provided both before and after a final installation of the direct current motor at the preinstallation module.

Abstract: A permanent magnet rotor of an electric motor, consisting of a return body and a number of sintered permanent magnets distributed on the case of the return body at intervals, connected to a plastic mass filled with hard magnetic material. The objective of the present invention is to ensure that a generic permanent magnet rotor can be simply and economically produced, along with allowing a great degree of freedom regarding the design of the pole faces, wherein high rigidity and security of the mechanical connection between the permanent magnets and the return body are guaranteed.

Abstract: A method for producing a centrifugal pump impeller having a base plate, which is a single piece with pump blades and a cover plate, which consists of a thermoplastic material, wherein contact areas are available, which are heated and melted by means of ultrasonic excitation and form a close bonded connection after cool-down. The objective of the invention is to ensure inherent stability with the individual parts and a simple and reliable pre-assembly as well as a fixed mechanical connection, wherein only a small amount of excitation energy is required, with a centrifugal pump impeller comprising a base plate and cover plate.

Abstract: An electric centrifugal pump having a motor housing, a pump head, a containment shell, and a rotor assembly consisting of a pump impeller and a permanent magnet rotor, wherein the pump head with the containment shell defines a wet chamber, in which the rotor assembly is arranged rotationally around a longitudinal motor axis, the containment shell with the motor housing defines a dry chamber, in which a wound stator is arranged, and the permanent magnet rotor is arranged within the stator and a hollow-cylindrical region of the containment shell. Particle accumulations in the region between the containment shell and the permanent magnet rotor cannot occur or can only occur to a very minor extent and that the consequences of impurities in the wet chamber are reduced in order to prevent premature wear or a blockage of the centrifugal pump.

Abstract: The invention relates to an electronically commutated direct current motor comprising a housing consisting of a plastic material, a wound stator, a rotor and a bearing shield consisting of a plastic material. The DC motor has a connection between the bearing shield and the housing or cover and housing or add-on part and housing, whereby no additional connecting or sealing elements are necessary and a very strong and tight connection can be established.

Abstract: A centrifugal pump motor comprising a permanent magnet rotor, a wound stator that is separated from the permanent magnet rotor by means of a containment shell, a circuit board having a large electronic component electrically connected to it, and a motor housing with a plug connection. The centrifugal pump motor provides a robust design for a generic centrifugal pump motor, so as to prevent damage during installation and operation, as well as additionally ensuring a space-saving and compact arrangement of the electronic components, in order to enable optimal heat dissipation of the electronic components. Furthermore, a simple way of manufacturing is provided.

Abstract: A pump motor having a permanent magnet rotor, a containment shell, a wound stator, a motor housing, a pump head, a shaft, which is secured in the containment shell on the one hand and in the pump head on the other hand, and a fixed bearing, which is pressed or injected into the permanent magnet rotor and rotatably mounts it on the shaft. The pump motor provides a reliable and economically producible bearing of the permanent magnet rotor on the shaft in a generic pump motor, in which the bearing abutting uniformly against the shaft over the entire bearing length and during a complete rotation can be achieved, small angle errors can be compensated, and noises can be reduced.

Abstract: The invention relates to an electric motor, in particular a pump motor, comprising a permanent magnet rotor; a wound stator including a stator laminate package, insulating elements and a stator winding; a motor housing made of plastic material; and a component carrying a rotor bearing, in particular a pump head. The electric motor provides a generic motor with a reliable and economically feasible fastening of the stator to the motor housing, wherein heat expansion cracks are avoided and noise transmissions can be reduced.

Abstract: An electronically commutated direct current motor with a housing, a housing cover, a bearing shield, a rotor and a stator, wherein the rotor includes a shaft and a permanent magnet and the stator consists of single terminals, which are provided with terminal insulation. The direct current motor ensures a space-saving construction connection of motor components or components with the housing of the electronic commutated direct current motor, conforming to its class, wherein additional connections or sealing elements are not required, wherein a firm and sealed connection can be manufactured upon demand and an easy integration of other functions and interfaces is possible.

Abstract: Pump motor, with a crankcase, a pump head, and a containment shell, whereby the pump head with the containment shell defines a wet chamber and the containment shell with the crankcase defines a dry chamber, a permanent magnet rotor is rotatably mounted in the wet chamber around an axis, a wound stator and a printed circuit board are arranged in the dry chamber and the printed circuit board is located opposite to the containment shell bottom. The pump motor economically provides for a reliable heat dissipation with an increased heat dissipation capacity, from the printed circuit board into the medium which has to be transported, in the case of a pump motor of an appropriate kind.

Abstract: An electric motor with a motor shaft, a motor pinion and a sensor element for an optical rotary encoder which has at least one recess for the transmission of a light beam from the optical rotary encoder. The motor shaft, the motor pinion and the sensing element being integrally formed with one another and being coupled with the motor shaft in a rotationally fixed manner. Further, the sensor element has a drum-shaped design and is aligned coaxially with the motor pinion. The recess is formed in the sensor element in such a way that the light beam of the rotary encoder can pass radially relative to a rotational axis of the sensor element. The invention also relates to a medical device with such an electric motor.

Abstract: A stator core for an electronically commutated DC motor with an internal rotor having a plurality of radially inwardly directed pole cores which at their periphery are integral with back iron segments and the back iron segments are integral with adjacent back iron segments via webs, wherein the back iron segments alternate with the webs and jointly form a seamless closed one-piece ring. A method of ensuring that in the case of a stator core of this class, upon a reduction of the stator diameter and reduction of the pole distances after winding, a clearly defined end position of the adjoining regions can be assumed, and that for this process, only minimal forces are necessary, in which damage to the stator core is not to be expected, and that at the end of the process only a very small and uniform air gap remains at a lowest possible spring-back.

Abstract: A centrifugal pump for delivering coolant in vehicles and providing a centering of a pump impeller and a dampening of motor vibrations. The centrifugal pump having a pump housing consisting of a pump head, which forms a single part with a suction nozzle, a discharge nozzle, a spoke, and a bearing support, in which a counter bearing is mounted, in which a first region of a shaft is supported, around which a pump impeller is rotatably mounted via a slide bearing secured in the pump impeller, the spoke retaining the bearing support in a central position within the pump head and having a containment shell, which separates a wet chamber from a dry chamber and in which a second region of the shaft is supported. The invention seeks to solve the problem of providing in a generic centrifugal pump.

Abstract: An electrical machine, in particular an electric motor, including a rotor, which has a laminated core made up of stacked laminating sheets having at least two tangentially extending holes, in each of which at least one permanent magnet is at least largely accommodated, at least one laminating sheet having at least one elastic arm, which is arranged between the at least two permanent magnets and lies against a permanent magnet and resiliently acts on said permanent magnet substantially in a tangential direction.

Abstract: In a DC motor, a permanent magnet rotor comprising a shaft, a rotor sheet packet supported by the shaft, which rotor sheet packet comprises close to the periphery thereof completely closed and tangentially extending rectangular recesses for receiving planar permanent magnet plates. At least one permanent magnet plate is accommodated in each recess, the permanent magnet plates are held by spring elements free of play by force locking, the recesses have free spaces connected to the permanent magnet plates in the tangential direction, which free spaces extend across the major part of the side surfaces of the permanent magnet plates and the rotor sheet packet consists essentially of a radial outer annular region and a radial inner core region, wherein the annular region in a large part is delimited by the recesses and the free spaces and is integral with the core region via thin radial webs.

Abstract: An actuating drive having a housing which comprises receptacles for a step-down gear mechanism and for a very small electric motor, wherein the motor receptacle is connected to a terminal cover. The very small electric motor is held securely without play. The terminal cover comprises a conductor stamping which is encapsulated with plastic material and has motor contact areas which interengage with connection lugs of the very small electric motor, and in that the baffle plate has retaining regions which interengage with housing elements on the housing.

Abstract: A stator core for an electronically commutated DC motor with an internal rotor having a plurality of radially inwardly directed pole cores which at their periphery are integral with back iron segments and the back iron segments are integral with adjacent back iron segments via webs, wherein the back iron segments alternate with the webs and jointly form a seamless closed one-piece ring. A method of ensuring that in the case of a stator core of this class, upon a reduction of the stator diameter and reduction of the pole distances after winding, a clearly defined end position of the adjoining regions can be assumed, and that for this process, only minimal forces are necessary, in which damage to the stator core is not to be expected, and that at the end of the process only a very small and uniform air gap remains at a lowest possible spring-back.

Abstract: An electrical machine, in particular an electric motor, comprising a rotor, which has a laminated core comprising stacked laminating sheets having at least two tangentially extending holes, in each of which at least one permanent magnet is at least largely accommodated, at least one laminating sheet having at least one elastic arm, which is arranged between the at least two permanent magnets and lies against a permanent magnet and resiliently acts on said permanent magnet substantially in a tangential direction.

Abstract: A transducer device for attachment to one end of a shaft of an electric drive, the shaft having a shaft axis. The transducer device includes at least one recess in the shaft end. Means are provided for engaging the transducer device with the at least one recess to create a form fitting connection acting in the direction of the shaft axis. Finally, a securing means is provided for preventing detachment of the form-fitting connection.

Abstract: In a DC motor, a permanent magnet rotor comprising a shaft, a rotor sheet packet supported by the shaft, which rotor sheet packet comprises close to the periphery thereof completely closed and tangentially extending rectangular recesses for receiving planar permanent magnet plates. At least one permanent magnet plate is accommodated in each recess, the permanent magnet plates are held by spring elements free of play by force locking, the recesses have free spaces connected to the permanent magnet plates in the tangential direction, which free spaces extend across the major part of the side surfaces of the permanent magnet plates and the rotor sheet packet consists essentially of a radial outer annular region and a radial inner core region, wherein the annular region in a large part is delimited by the recesses and the free spaces and is integral with the core region via thin radial webs.