A method comprises: a step of disposing a coil end connection portion of a first stator coil end and a solid connection at mutually adjacent positions after the solid connection and the cooling water pipe are brazed together; a step of disposing a heating coil around the solid connection and the first stator coil end in such a way as to bypass the cooling water pipe connection portion; and a step of supplying the heating coil with alternating current, so that the solid connection and the first stator coil end are induce-heated and then connected.

A motor, may include a rotor having a shaft which has its center on a center axis extending in one direction; a stator which surrounds the rotor in the axial circumference, and includes a plurality of coils; and bus bars connecting coil ends extending from the coils. The bus bars may include a plate shape member bent in a thickness direction, a width direction of the bus bars being identical to an axial direction of the motor. Each of the bus bars may include a main body portion, and a coil end connection portion which extends from the main body portion and grips one of the coil ends at an opening that is open toward one direction within a plane perpendicular to the axial direction.

To provide a motor in which an insulating film of a magnet wire can be reliably peeled off at a target position and connection reliability between the magnet wire of which the insulating film is peeled off and an external connecting terminal is high irrespective of accuracy of a winding machine and presence or absence of an aligning winding. A crossover wire is bridged over at least a pair of cross-linking holding portions provided in an annular wall of an insulator via a slit portion, of which an insulating film is peeled off, is welded to a terminal mounted on a terminal mounting portion to be assembled thereto.

An electric motor includes a stator and a rotor. The rotor includes a motor shaft, at least one radial fan and at least one axial fan being non-rotatably situated on the motor shaft for motor cooling. The radial fan is situated in the area of one axial end of the motor shaft and the axial fan is situated in the area of a diametrically opposed axial end of the motor shaft.

In a process of manufacturing a motor, a terminal pin is first attached to an insulator of a stator. Next, an end portion of a conducting wire defining a coil is drawn out toward the terminal pin, and the conducting wire is wound around the terminal pin. Next, the conducting wire is soldered to the terminal pin. Thereafter, injection molding of a casing is performed with the stator as an insert. At this time, a mold is brought into contact with an upper surface of the insulator to surround the terminal pin with the mold. Thus, a contact of the mold with the conducting wire wound around the terminal pin is prevented. This reduces the likelihood that the conducting wire will be damaged.

The coil manufacturing apparatus includes: a bending device configured to bend each of a plurality of flat conductors; and a welding device configured to weld the plurality of flat conductors. The bending device is a unit configured to bend each of the flat conductors before being supplied to the welding device. The welding device includes a first holding portion and a second holding portion disposed facing each other, and a driving portion configured to move the first holding portion and the second holding portion. The helical structure body is formed by pressing end faces of the one flat conductor and the another flat conductor against each other along a strip longitudinal direction and joining the flat conductors through pressure welding while reducing a distance in the strip longitudinal direction. The coil manufacturing apparatus includes a removing device configured to remove an unwanted portion of the flat conductors generated by welding.

A coil wire module for a rotating electric machine, the core wire module including: a plurality of coil wires that are configured to be provided in a core of the rotating electric machine; and a hardened solder, wherein: the plurality of coil wires each have a connection end that is configured to be exposed from an end of the core, and the hardened solder is formed by a solder melting inside a solder hardening space, in a state where at least two of the connection ends of the plurality of coil wires are inserted into the solder hardening space, and hardening to join the at least two of the connection ends together.

In a mechanically and electrically integrated rotary electric machine, a motor portion and an inverter portion are inserted inside a cylindrical frame. The motor portion has a plurality of coils. The inverter portion has a plurality of switching elements. The coils and the switching elements are electrically connected by a connector. The connector has: an end portion connector that distributes sinusoidal electric currents from the switching elements to the respective coils; and a plurality of axial connectors that direct the sinusoidal electric currents from the switching elements to the end portion connector. The end portion connector is disposed on an end portion of the motor portion near an output shaft. The axial connectors are disposed parallel to an axial direction of the frame so as to pass from the switching elements through a mounted region of the motor portion.

A contacting kit for an electric machine which has a first contacting set having a multiplicity of contacting elements and a second contacting set having a multiplicity of contacting elements that are intended to establish contact between an energy supply device and a specific arrangement of protruding ends of coils that have been drawn into a stator, and a support body into which the contacting elements of the first and the second contacting set are insertable. Irrespective of which of the first or the second contacting set is inserted into the support body, the contacting elements are exposed at defined positions on an outer surface of the support body for contacting the protruding ends, such that, a first or a second winding pattern of the coils may be implemented by the selective insertion of the contacting elements of the first or the second contacting set into the support body.

A micromechanical component includes a mount; a drive body on which at least one coil device is disposed and which is connected to the mount by way of at least one spring such that the drive body can be set into a driving motion by an interaction of a current conducted through the at least one coil device and a magnetic field present at the at least one coil device; and a control element connected to the drive body such a manner that a setting of the drive body into a driving motion causes the control element to be set into a deflection motion with at least one motion component directed about a rotation axis. At least one connecting element disposes the drive body and control element relative to each other such that the rotation axis extends at a spacing from a center of gravity of the drive body.