A hairpin winding motor for a vehicle may include a hairpin including a pattern coil formed from a bundle of a plurality of coils; a stator including a slot in which the hairpin is arranged; and a rotor configured to move in response to the stator.

A manufacturing apparatus of an electrical rotating machine includes a coil segment shaping section for shaping a linear wire rod with a predetermined length into a coil segment with a predetermined shape consisting of a pair of slot insertion port ions extending substantially in parallel with each other and a linking portion for coupling the pair of slot insertion portions, and a coil assembling section for assembling a coil by circularly arranging the coil segments shaped in the coil segment shaping section. The coil segment shaping section and the coil assembling section are constituted to continuously perform the shaping and the assembling of the coil segment in each coil segment unit, based on control data set depending on a coil to be fabricated.

The transport device includes a backflow prevention mechanism that prevents backflow in which workpieces are moved in the direction opposite to the predetermined direction, the backflow prevention mechanism has two backflow prevention valves 810 attached to an end portion of a transport rail, and each of the backflow prevention valves 810 has an inductive plate 812 inclined with respect to the predetermined direction from the center of the transport rail to the side along the predetermined direction, and a coupling plate 813 combining a center side end portion of the inductive plate 812 positioned close to the center of the transport rail and a side surface of the transport rail.

In a coil forming device, an edge line in an escape region is formed so that a clearance between the edge line in the escape region and a recess portion in an axis direction is larger than a minimum clearance between the edge line in an inclined region and the recess portion in the axis direction. When a second die is rotated relative to a first die in the clockwise direction the flat-square conductive material end is bent in flatwise bending by the recess portion and the inclined region of a protrusion portion, and then, the flat-square conductive material end reaches the escape region.

A coil unit and a manufacturing method of the same are provided which are configured to simplify the configuration of a connection portion between a coil and a wiring material (busbar), to simplify the number of components and a connection step, to prevent an increase in resistance at the connection portion, and to achieve a good connection state. A busbars-welded coil includes a coil made of a wound first metal material, and busbars made of a second metal material connected to end portions of the coil. A welded portion between the end portion of the coil and the busbar is configured by pressure welding with end surfaces butted against each other.

A process and a system for welding rotor coils are presented. A plurality of rotor coils are arranged on a table of a machine. A welding tool welds the rotor coils on one end using a Friction Stir Welding process. Transition pieces are each arranged between the rotor coils to create a continuous welding path. A run-off tab is placed at an end of the welding path. The welding tool is changed to a milling tool after completion of the welding. The milling tool traces back along the welding path to separate the rotor coils. The milling tool may be changed to the welding tool to repeat the process for another end of the rotor coils. The process is completely automatic and controlled by a control unit.

The present invention pertains to a stator manufacturing method and a device therefor. All of segments are twisted in order to obtain a stator, the linear sections of the segments being inserted into slots in a stator core. The segments on the inner peripheral side are subsequently twisted after the segments on the outer peripheral side are untwisted. In order to achieve this, e.g., a fourth spindle that is positioned on the outermost peripheral side and is one of the first through fourth spindles for twisting the segments is disconnected from a fourth motor and brought to a non-rotatable state. The following is then performed in sequence: the third spindle is disconnected from a third motor and twisted, and the second spindle is disconnected from the second motor and twisted.

A method of manufacturing a coated conducting wire assembly includes forming a conducting wire assembly by twist-deforming a conducting wire bundle, forming a coated conducting wire assembly by covering the conducting wire assembly with an insulation coating, and annealing the coated conducting wire assembly. The conducting wire bundle is formed by bundling a plurality of conducting wires. The conducting wire assembly includes a parallel portion, a left-wound portion, and a right-wound portion. The annealing is performed by heating and holding the coated conducting wire assembly at an annealing temperature while applying tension to the covered conducting wire assembly.

Disclosed are a coil assembly of a slotless motor, a housing, and a slotless motor including the same. According to the present invention, there is provided a coil assembly of a slotless motor which includes a plurality of first coil structures which have two first coil sides facing each other with a first space interposed therebetween and having a fan-shaped cross section in a width direction and have a first end turn bent in a first direction on at least one end in a longitudinal direction of the two first coil sides and a plurality of second coil structures which have two second coil sides facing each other with a second space interposed therebetween and having a fan-shaped cross section in a width direction and have a second end turn bent in a second direction on at least one end in a longitudinal direction of the two second coil sides, wherein the plurality of first coil structures and the plurality of second coil structures are coupled to each other to form a circular stator winding structure.

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.