The invention relates to a rotor for an electric machine, comprising at least one first (22) and a second (32) conductor end and a contact element, which provides a connection between the at least two conductor ends (22, 32), and wherein the contact element can be positioned along a rotor axis (R) of the rotor in such a way that the connection can be established in an intermediate position, which is offset away from the rotor in relation to an end position of the contact element.

An electric motor includes a stator around which an aluminum wire having a resin coating layer formed on a surface of the aluminum wire is wound; and a rotator arranged on an inner side of the stator to be rotatable, the aluminum wire comprising a terminal wire including an aluminum exposed portion, from which the resin coating layer is peeled off to expose an aluminum core wire, the stator comprising a terminal with which the aluminum exposed portion and a power supply wire for use in supplying electric power for rotating the rotator are connected, the terminal electrically conducting the aluminum exposed portion and the power supply wire, and a first solder layer formed on the terminal, covering an entire surface of the aluminum exposed portion, and joining the aluminum exposed portion and the terminal to each other.

A stator for an electric actuator or motor, including: a solid body; a ferromagnetic core region between the layers of semiconductor material, electrically insulated from the layers of semiconductor material; a plurality of conductive through vias through the solid body; a first plurality of conductive strips, which extend parallel to one another above the core; and a second plurality of conductive strips, which extend parallel to one another above the core and opposite to the first plurality of conductive strips; wherein the first plurality of conductive strips, the plurality of conductive through vias, and the second plurality of conductive strips form a winding or coil of the stator.

The cold pressure welding apparatus includes a first holding part capable of sandwiching a first flat conductor, a second holding part disposed opposite to the first holding part and capable of sandwiching a second flat conductor, and a drive part for moving the first holding part and the second holding part. The drive part can move the first holding part and the second holding part between a first direction separated position and a close position along a first direction. The drive part can move the first holding part and the second holding part between a second direction separated position and a sandwiching position along a second direction.

A busbar device includes an insulating sheet that is annularly formed by laminating an insulating layer and an adhesive layer and also includes an annular busbar. Moreover, the busbar is adhered to the adhesive layer. The insulating sheet and the busbar are laminated in a direction parallel to a central axis of the busbar.

The innermost first segment layer and the second segment layer adjacent thereto in a radial direction are twisted using a twisting jig unit including an inner twisting jig and an outer twisting jig, then the twisting jig unit is replaced with another twisting jig unit including an inner twisting jig and an outer twisting jig, and the third segment layer and the fourth segment layer adjacent thereto are twisted, and then the twisting jig unit is replaced with still another twisting jig unit including an inner twisting jig and an outer twisting jig, and the fifth segment layer and the sixth segment layer adjacent thereto are twisted.

A stator for an electric motor, connected to a circuit board, comprising a stator housing in which several winding arrangements consisting of winding wires wound to form coils are arranged. Contact support receptacles are formed on the stator housing, in which, in each case, an insulation displacement contact element is introduced, which establishes an electrical contact between, in each case, a winding arrangement and a jumper wire on the circuit board.

A stator (1) includes a plurality of divided cores (3) arranged in circumferential direction to constitute a stator core (2), and a holder (4). Stator coils (5) are wound around the individual divided cores (3). The divided core (3) includes a tooth part (6), and an insulator (13) around which the stator coil (5) is wound. A plurality of projection portions (5a) are formed in the stator coil (5) when the stator coil (5) is wound around the insulator (13). The projection portions (5a) are wound on only short sides of the insulator (13), resulting that the stator coil (5) does not protrude from the long sides of the divided core (3), and when the divided cores (3) are arranged in the circumferential direction to constitute the stator (1), the stator (1) is normally driven without the stator coils (5) of the neighboring divided cores (3) contacting each other.

A method of manufacturing a rotary electric machine armature that includes a cylindrical armature core in which a plurality of slots that extend in an axial direction are disposed in a circumferential direction and a coil wound around the armature core, the slots having respective radial openings that open in a radial direction, and the coil being formed by joining a plurality of segment conductors to each other.

The cold pressure welding apparatus includes a first holding part capable of sandwiching a first flat conductor, a second holding part disposed opposite to the first holding part and capable of sandwiching a second flat conductor, and a drive part for moving the first holding part and the second holding part. The drive part can move the first holding part and the second holding part between a first direction separated position and a close position along a first direction. The drive part can move the first holding part and the second holding part between a second direction separated position and a sandwiching position along a second direction.