The invention relates to a method for producing a drive unit device, in particular a fan device, which has at least one first modular unit (12) and at least one second modular unit (16), which concentrically accommodates at least a portion of the first modular unit (12), with the first and second modular units (12, 16) being intended to contribute mechanically to a change in torque, and the first modular unit (12) being secured in the second modular unit (16) in at least one method step (100, 110). To increase safety and reduce process costs, it is proposed that the first modular unit (12) be secured in the second modular unit (16) by means of at least one concentric pressing process step.

The invention relates to a method for producing a drive unit device, in particular a fan device, which has at least one first modular unit (12) and at least one second modular unit (16), which concentrically accommodates at least a portion of the first modular unit (12), with the first and second modular units (12, 16) being intended to contribute mechanically to a change in torque, and the first modular unit (12) being secured in the second modular unit (16) in at least one method step (100, 110). To increase safety and reduce process costs, it is proposed that the first modular unit (12) be secured in the second modular unit (16) by means of at least one concentric pressing process step.

A door drive for arrangement on or in connection with a door system, whereby at least one leaf element of the door system is movable. The door drive includes a motor unit with a housing, in which a stator is stationarily received, and wherein a rotor is arranged so as to be rotationally-movable in the housing and includes an output shaft, wherein the output shaft can be brought into operative connection in a driving manner with the leaf element. The rotor includes a support body, on which receiving fields are formed, on which permanent magnets are adhered.

A door drive for arrangement on or in connection with a door system, whereby at least one leaf element of the door system is movable. The door drive includes a motor unit with a housing, in which a stator is stationarily received, and wherein a rotor is arranged so as to be rotationally-movable in the housing and includes an output shaft, wherein the output shaft can be brought into operative connection in a driving manner with the leaf element. The rotor includes a support body, on which receiving fields are formed, on which permanent magnets are adhered.

An apparatus for manufacturing a rotor includes a magnetizer. The magnetizer is configured to magnetize a permanent magnet in a rotor from outside the rotor. The rotor includes a rotor core having a magnet insertion hole. The permanent magnet is provided in an embedded state in the magnet insertion hole and has a bent-back shape protruding radially inward. The magnetizer includes a first yoke portion, a second yoke portion, and a magnetization coil. The first yoke portion has an opposing portion facing an outer peripheral surface of the rotor. The second yoke portion forms a magnetic path together with the first yoke portion. The magnetization coil is disposed on the magnetic path of the first and second yoke portions. The magnetizer magnetizes the permanent magnet by energizing the magnetization coil to apply a magnetizing magnetic flux at least through the rotor between the first yoke portion and the second yoke portion, which are located opposed to each other in a radial direction of the rotor.

An apparatus for manufacturing a rotor includes a magnetizer. The magnetizer is configured to magnetize a permanent magnet in a rotor from outside the rotor. The rotor includes a rotor core having a magnet insertion hole. The permanent magnet is provided in an embedded state in the magnet insertion hole and has a bent-back shape protruding radially inward. The magnetizer includes a first yoke portion, a second yoke portion, and a magnetization coil. The first yoke portion has an opposing portion facing an outer peripheral surface of the rotor. The second yoke portion forms a magnetic path together with the first yoke portion. The magnetization coil is disposed on the magnetic path of the first and second yoke portions. The magnetizer magnetizes the permanent magnet by energizing the magnetization coil to apply a magnetizing magnetic flux at least through the rotor between the first yoke portion and the second yoke portion, which are located opposed to each other in a radial direction of the rotor.

Magnet pole (10) with a plurality of single magnets with variable cross sections

The present invention relates to a magnet pole (10) formed by a plurality of elongated single magnets grouped into a bundle, oriented magnetically longitudinally and extending parallel between a front face and a rear face of the magnet pole (10), and are connected to one another. A first group of single magnets (4) has a larger cross-section or a differently shaped cross-section than at least a second group of at least one single magnet (4 a), there being a greater number of single magnets (4) of the first group than the at least one single magnet (41) of the at least one second group.

Magnet pole (10) with a plurality of single magnets with variable cross sections

The present invention relates to a magnet pole (10) formed by a plurality of elongated single magnets grouped into a bundle, oriented magnetically longitudinally and extending parallel between a front face and a rear face of the magnet pole (10), and are connected to one another. A first group of single magnets (4) has a larger cross-section or a differently shaped cross-section than at least a second group of at least one single magnet (4 a), there being a greater number of single magnets (4) of the first group than the at least one single magnet (41) of the at least one second group.

A rotor for an electric machine includes a rotor body formed from a plurality of rotor laminations defining a first axial end and a second axial end. Each of the plurality of rotor laminations includes a plurality of openings that are aligned so as to define a plurality of passages through the rotor body. A plurality of reinforcement elements extend through the plurality of laminations. Each of the plurality of reinforcement elements is arranged in a corresponding one of the plurality of passages and includes a first end portion and a second end portion. The first end portion and the second end portion of select ones of the plurality of reinforcement elements extend outwardly of the first axial end and the second axial end. An end ring is positioned at the first axial end. The end ring is integrally formed with the select ones of the plurality of reinforcement elements.

A rotor for an electric machine includes a rotor body formed from a plurality of rotor laminations defining a first axial end and a second axial end. Each of the plurality of rotor laminations includes a plurality of openings that are aligned so as to define a plurality of passages through the rotor body. A plurality of reinforcement elements extend through the plurality of laminations. Each of the plurality of reinforcement elements is arranged in a corresponding one of the plurality of passages and includes a first end portion and a second end portion. The first end portion and the second end portion of select ones of the plurality of reinforcement elements extend outwardly of the first axial end and the second axial end. An end ring is positioned at the first axial end. The end ring is integrally formed with the select ones of the plurality of reinforcement elements.