Abstract: In a method for manufacturing a core element which is used for a divisional layer stack core of a rotary electric machine, the method includes: a first punch cutting out process for punch cutting out a first core element having a product shape, from a belt like electromagnetic steel sheet, with a press mechanism which has a feeding device of the electromagnetic steel sheet, a feeding process for feeding the electromagnetic steel sheet, with the feeding device, and a second punch cutting out process for positioning with a product shaped pilot which has an external shape of the core element, using a punch cut out trace shape of the first core element, and producing a second core element having the product shape, by punch cutting out with the press mechanism.

Abstract: A rotor, in particular of an electrical machine, has a base body and at least one metallic end plate which is mounted on the base body. The base body and the at least one end plate have a continuous layer which is injection molded.

Abstract: An electric motor includes a stator having multiple magnetic poles and a rotor rotatably mounted to the stator. The rotor includes a shaft, a commutator and a rotor core fixed to the shaft; and windings wound on the rotor core and electrically connected to the commutator. The rotor core is formed by stacking a plurality of laminations. Each lamination includes an inner ring having a hole for fixing the shaft; an outer ring radially spaced from the inner ring; multiple teeth extending outwardly from the outer ring, and multiple ribs connecting the inner ring to the outer ring. Each rib has a width w measured in a circumferential direction of the lamination. The number of ribs is n. The width w and the number n satisfy the formula: 0.75?n×w2?64, where the width w is measured in millimeters.

Abstract: A motor may include a shaft, an armature, a commutator, a bearing, a housing, a bracket, and a brush card assembly. The brush card assembly may include a brush contacting the commutator, and a brush card holding the brush. The bracket may include a bracket bottom portion covering at least a portion of a lower side of the brush card, a cylindrical bracket cylindrical portion extending upwardly from a radially outer edge of the bracket bottom portion, a bearing holding portion extending upwardly from the bracket bottom portion at a radially inner side of the bracket cylindrical portion, and holding the bearing, and a rib positioned above the bracket bottom portion, and extending radially outward from the bearing holding portion.

Abstract: A rotor for an electrodynamic machine, in particular an electric motor, is disclosed. The rotor includes a rotor packet having a first rotor end and a second rotor end as well as a plurality of interconnected sheet metal rings. Each sheet metal ring forms a web. Further, the rotor includes a web insulation with at least one winding support element for receiving a rotor coil. In addition, the rotor includes an end sheet metal element with at least one support element, where the end sheet metal element is at least partially integrated into the winding support element.

Abstract: A rotor 14 includes a shaft having a coolant flow passage and a coolant supply port, a rotor core 24 fixed on the shaft and formed of laminated steel plates, and a magnet set 32 provided in the rotor core 24 to extend along an axial direction thereof. The rotor core 24 has a first flow passage 34 provided near the magnet to extend therealong and a second flow passage 36 that connects the coolant supply port 28 of the shaft 22 and the first flow passage 34, thereby constituting a coolant flow path. The second flow passage 36 is formed by overlapping second slits 37 formed in the respective steel plates at an axially intermediate region A of the rotor core 24, the formed position of the second slit 37 being different for each steel plate combined. The first flow passage 34 and the second flow passage 36 join at the axially intermediate region A of the rotor core 24.

Abstract: A reluctance rotor for an electric machine includes rotor lamination layers made of a ferromagnetic material, wherein each rotor lamination layer has a flux barrier formed by a recess in the rotor lamination layer. In order to toughen the reluctance rotor for a high torque and a high rotational speed, the reluctance rotor has an intermediate part with recesses arranged between a first and a second rotor lamination layer, and separators delimiting the recesses from one another. The recesses of the intermediate part and the separators are arranged axially between the flux barriers, wherein the recesses of the intermediate part and the flux barriers together delimit a space. The space is cast with a non-ferromagnetic casting compound.

Abstract: A compact Wankel expander-alternator combination is provided. The combination includes a stationary outer housing that has embedded stator coils and a rotating inner housing having corresponding magnets disposed around the housing with the magnet/coil interaction generating power. Within the rotating housing, a three-sided rotor turns within a two lobed Wankel cavity, powered by working fluid acting on the rotor. The rotating housing and the rotor each circumscribe a stationary shaft. The shaft has an eccentric lobe about which the rotor turns on a bearing disposed between the rotor and the lobe. The rotating housing turns on bearings supported by the stationary shaft. The rotor and rotating housing are linked so that as the rotor turns in response to the working fluid force, the housing turns at a higher speed the speed ratio being preselected to achieve the desired output energy.

Abstract: A rotor assembly includes a lamination and a hub. The hub includes an inner portion and an outer portion surrounding the inner portion and separated from it by an expansion gap. The rotor assembly also includes two or more connecting members coupling the inner portion to the outer portion, the connecting members having a first end and a second end.

Abstract: An electric machine (1), particularly used as an electric motor, has a rotor (2) comprising a plurality of disks (4). A disk (4) of the rotor (2) is divided in a circumferential direction (5) into a plurality of disk sectors (6, 7, 8) between which magnetic pockets (9, 10) are designed. Furthermore, the disk (4) has an inner fastening collar (15) and connecting members (20, 23, 24) connecting the disk sectors (6, 7, 8) to the fastening collar (15). Such a connecting member (20) comprises a main web (21), a side arm (30) branching off the main rib (21) in the circumferential direction (5), and a side arm (31) branching off the main web (21) opposite to the circumferential direction (5). High mechanical stability of the disk (4) can thus be ensured, wherein magnetic flow losses are reduced.

Abstract: A rotor assembly includes a lamination and a hub. The hub includes an inner portion and an outer portion surrounding the inner portion and separated from it by an expansion gap. The rotor assembly also includes two or more connecting members coupling the inner portion to the outer portion, the connecting members having a first end and a second end.

Abstract: A rotor is accommodated in a yoke housing. Six magnets are arranged at equal intervals in the circumferential direction on the inner circumferential surface of the yoke housing so as to face the rotor. The core is generally cylindrical and includes an annular portion at an anti-output side and a balance at an output side. The magnets have six poles so as to effectively narrow a basal path width of the core in which the line of magnetic force concentrates most and magnetic saturation is likely to occur most. This reduces the diameter of the core. Therefore, the motor is effectively miniaturized in the axial direction and in the radial direction without complicating the formation steps.

Abstract: A lamination of a stator of a three-phase motor has a core ring and multiple winding frames. Each winding frame has a body and two wings. The body is implemented for winding wires thereon, is elongated and defines two side edges and an outer end. The wings oppositely protrude transversely from the outer end of the body and each defines an inner edge adjacent to one corresponding side edge of the adjacent body to retain the wires wound on the body. The inner edges of the wings are formed perpendicular to, or slightly outward relative to the side edges of the body. Such that interference between the wings and wound wires near the outer ends of the bodies can be prevent, and a capacity of the winding space defined around the body is increased and an efficient of wire winding is ensured.