Provided are an alignment method and an alignment device by which, immediately before aligning, the leg parts of adjacent conductors do not interfere with each other. The alignment method, in which by providing a plurality of coil elements (40) in an annular shape and moving the plurality of coil elements (40) in a direction in which the diameter of the annular shape is reduced, the plurality of coil elements (40) are aligned in a state where turn sections (42) provided at substantially apex portions are alternately overlapped, wherein the plurality of coil elements (40) are aligned by moving each of the plurality of coil elements (40) toward an annularly shaped center, and while doing so, rotating the plurality of coil elements about a rotation axis (231e) that is parallel to the central axis (C1) of the annular shape.

According to one embodiment, each of a pair of straight sections of a coil segment is inserted into a slot of a stator core from a first end face side of the stator core, extension end sections of the straight sections are made to protrude from a second end face side of the stator core. A jig is arranged on the second end face side of the stator core in a state where each of extension end section hold sections of the coil segment is held by the jig, the position of the jig relative to the stator core is turned in a circumferential direction, a bend section positioned between the stator core and the jig is bent in the circumferential direction, and the whole of the extension end section hold section is cut off.

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 portions 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.

In this armature, facing surfaces which are portions where a first segment conductor and a second segment conductor are joined together are disposed so as to overlap each other as viewed in a radial direction, and an end part of at least one of the first segment conductor and the second segment conductor is provided with chamfered parts at edge parts on both circumferential sides of the end part.

A stator for a rotary electric machine, having a stator mass that has slots in which electrical conductors introduced axially into the slots are housed, each of the slots having a continuously closed contour.

An apparatus for manufacturing a stator includes a placement table, a supporting member and a resistance heating device. The placement table is configured to have a stator core, which has coil segments and insulators inserted in slots thereof, placed thereon. The stator core is formed of steel sheets that are laminated in an axial direction of the stator core. The coil segments together form a stator coil. The insulators are formed of a material that is foamable upon being heated. The supporting member is configured to support, in the axial direction of the stator core, distal end portions of teeth of the stator core so as to prevent gaps from being formed between the steel sheets forming the stator core. The resistance heating device is configured to heat, through energization of the stator coil, the insulators along with the stator coil and thereby cause the insulators to foam.

An assembling device (10) includes a first rotating portion (11), a second rotating portion (12), and eighteen support arms (13) for supporting coil segments (4), and a motor (29). The first rotating portion (11) includes a first rotating plate (11a) having first holding portions (1d) on an outer peripheral surface thereof. The second rotating portion (12) includes a second rotating plate (12a) having second holding portions (12c) on an outer peripheral surface thereof. The motor (29) rotates the first rotating portion (11) in a counterclockwise direction D1, and the second rotating portion in a clockwise direction D2. Thus, the base parts (21) of the first to eighteenth support arms (13) are transferred from the first holding portions (11d) to the second holding portions (12c) so that the coil segments (4) are assembled to overlap with one another.

The present invention relates to a direct current motor for a vehicle, the motor having a novel electromagnetic structure and exhibiting excellent driving efficiency. The direct current motor comprises: a cover assembly; a yoke assembly that has a housing coupled with the cover assembly and a plurality of excitation poles arranged within the housing; an armature assembly that includes an armature core having a plurality of pole teeth around which coils interacting with the excitation poles are wound and a commutator having, on the armature core, the same number of commutator films as the excitation poles; and a brush disposed inside the cover assembly and selectively making contact with the commutator as the armature assembly rotates, wherein the excitation poles are provided such that three N-poles and three S-poles are alternately arranged, and 13 pole teeth and 13 commutator films are radially formed with a predetermined angle therebetween.

An aligning apparatus, which is provided for aligning coil segments to form an aligned coil, includes a cylindrical jig and a hook jig. The cylindrical jig has an outer cylinder to surround a radially outer periphery of the aligned coil and an inner cylinder to be surrounded by a radially inner periphery of the aligned coil. The hook jig has hooks arranged in a radial fashion and is rotatable relative to the cylindrical jig in a radial direction. The cylindrical jig further has an inner entrance provided in the inner cylinder, an outer entrance provided in the outer cylinder, and at least one of an inner guide wall extending from a front opening edge of the inner entrance radially inward and backward in the rotational direction and an outer guide wall extending from a front opening edge of the outer entrance radially outward and backward in the rotational direction.

A coil manufacturing device for manufacturing a coil by rotating a winding core and winding a wire around the rotating winding core, the coil manufacturing device includes a recess formed in the winding core, the recess being configured to suspend the wire wound around the winding core in the recess; and a wire bundling device configured to bundle the wire suspended in the recess.