An electrical machine can include a rotor core rotatably coupled to a shaft, and having a set of rotor windings including a termination end extending axially out the core and electrically connected to a terminal. A lead restraint assembly is arranged to rotatably restrain the termination end in a channel.

A motor includes: a rotor, a stator; and a cylindrical insulator fixed to an end portion of the stator. The stator includes a plurality of teeth, a plurality of winding wires each including a winding portion wound around each of the plurality of teeth, a neutral wire provided on one end side of the winding portion, and a power wire provided on the other end side of the winding portion, and a neutral point at which a plurality of neutral wires are electrically connected via a connecting member. The insulator is provided with a drawing notch penetrating from an outer side to an inner side of the insulator. The plurality of neutral wires are routed along an outer peripheral surface of the insulator, pass through the drawing notch, and are drawn from the outer side to the inner side of the insulator, and the plurality of neutral wires drawn are fixed.

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.

The present invention relates to a stator for an electric motor, comprising a plurality of separate teeth comprising a first connector and a second connector, a plurality of coils which are configured to be wound respectively around the plurality of separate teeth, a first end of the wire of the winding being configured to be positioned in the first connector and a second end of the wire of the winding being configured to be positioned in the second connector, a central module configured to receive the separate teeth, said central module comprising connecting frames comprising connecting tabs extending radially and configured to be inserted in a first connector or in a second connector of a separate tooth, the connecting frames being configured to provide electrical connections between the coils.

A method for bonding electrical conductors is provided that is capable of suppressing a power source capacity when assembling a stator having a specific structure. First, coil pieces 9 are arranged in contact with bonding portions of a slot coil 5 inserted in a slot of a stator iron core 2 via a metal paste. Subsequently, an electrical current is applied using a pair of electrodes 11A and 11B in the axial direction (upward and downward in the figures) of the slot coil 5 while contact portions 15 between the slot coil 5 and the coil pieces 9 are pressed in an axial direction of the slot coil 5. As a result, electricity flows in the axial direction the coil piece 9 (a direction of an arrow X in the figures).

An interconnection board (52) of a stator (10) of an electrical machine (12), as well as a method for producing same, by means of which an electrical winding (16) of the stator (10) can be connected to customer-specific connecting plugs (56) for power supply, wherein the interconnection board (52) has a closed ring (61) as a plastic body (62), onto which closed ring (61) exactly three holding elements (63) are integrally formed, extending in the axial direction (3), in which holding elements respective axial connector plugs (54) made of metal extend in the axial direction, wherein the axial connector plugs (54) are each integrally configured with conductive elements (58) which can be directly electrically connected to connecting wires (30, 31) of the electrical winding (16).

The stator includes a stator core having a first tooth and a second tooth adjacent to each other, a coil having a first winding portion wound around the first tooth and a second winding portion wound around the second tooth, a resin chip disposed in in a gap between the first winding portion and the second winding portion, and a molding resin covering the stator core, the coil, and the resin chip.

Disclosed is a method of wiring a coil in parallel around a stator having a plurality of teeth, which includes the steps of: winding the coil around a tooth starting from a top or a bottom of the stator; continuously winding the coil around an adjacent tooth when winding on the tooth is completed; cutting an end portion of the coil positioned at either the top or the bottom of the stator; wiring the cut end portion of the coil using a bus-bar; and wiring a neutral point to the other end of either the top or the bottom of the stator.

A motor includes a rotor including a shaft that is disposed along a central axis extending in an up-down direction; a stator radially facing the rotor with a clearance therebetween and including a plurality of coils; and a busbar electrically connected to the coils. The coils each have a coil end that is an end of a conductive wire. The busbar includes a first conductive member and a second conductive member that serve as different members. The first conductive member has a first coil end connector that is electrically connected to the coil ends. The second conductive member has a second coil end connector that is electrically connected to the coil ends. The plurality of coil ends are sandwiched between the first coil end connector and the second coil end connector and provide electrical continuity between the first coil end connector and the second coil end connector.

According to the method for connecting motor wire of the present invention, wire as a first wire having folding part is connected to lead as a first lead or a second wire, each having connecting part, with connection terminal having crimping part. After folding part is folded one or more times, folding part and connecting part are crimped at crimping part.