Abstract: A unit coil includes: first, second, third, and fourth turn portions extending in a bent manner from first, second, third, and fourth slot accommodation portions and each connecting the slot accommodation portions to each other; and first, second, third, and fourth leg portions. Recesses are formed in surfaces opposed to each other at bent parts of the turn portions or bent parts of the turn portion and the leg portion, that extend in a bent manner toward the same side in the circumferential direction from the slot accommodation portions adjacent to each other in the radial direction.

Abstract: A rotary electric machine is installed such that a central axis of a rotating shaft is horizontal, and coolant suction apertures are formed at positions on a cylindrical portion of a frame that are vertically above first and second coil ends, and strip-shaped insulating papers are inserted such that a thickness direction is in a radial direction between radially adjacent conductor portions of portions of the conductor wire that constitute the first and second coil ends, and are disposed so as to extend circumferentially across positions that are vertically below the coolant suction apertures inside the first and second coil ends.

Abstract: In a stator of the present invention, oblique-side portions of a pair of terminal wires to be welded to each other extend so as to approach each other and are located at different positions in a radial direction of a stator core, and straight portions of the pair of the terminal wires to be welded to each other are parallel to each other when viewed in the radial direction, and one of the straight portions is inclined in a direction toward another one of the straight portions through a boundary portion between the one straight portion and the oblique-side portion corresponding to the one straight portion as a bent portion in the radial direction so that a distal end portion of the one straight portion and a distal end portion of the another one of the straight portions overlap with each other when viewed in the circumferential direction.

Abstract: Provided is a segment-core coupled body, including a plurality of segment cores each including a core back and a tooth; and a plurality of coupling portions configured to couple the core backs to one another, wherein the plurality of segment cores and the plurality of coupling portions are each a laminated body of magnetic sheets, wherein the plurality of coupling portions each include: a posture holding portion adjacent to a gap defined between adjacent core backs; a first thin portion configured to couple one corner portion of the adjacent core backs and the posture holding portion; and a second thin portion configured to couple another corner portion of the adjacent core backs and the posture holding portion, and wherein, the posture holding portion projects toward a radially outer side with respect to the adjacent core backs.

Abstract: Insulators are respectively disposed such that longitudinal directions of trunk portions are oriented in a radial direction of teeth, and so as to place bottom surfaces of the trunk portions alongside two axial end surfaces of the teeth, concentrated winding coils are configured by winding conductor wires so as to be wound in multiple layers around the teeth so as to pass through a concave space that is formed by the trunk portions and first and second flange portions at two axial ends of the teeth, the second flange portion is disposed on an end surface of a core back of a stator core, and a temperature detecting element is installed by being inserted into an element insertion aperture that is formed on the second flange portion so as to be able to detect a temperature of a coil end of the concentrated winding coils.

Abstract: An armature core is configured by arranging into an annular shape: at least one first core segment that includes: a first core back portion; a first tooth portion; and a mounting portion that is formed on an outer circumferential portion of the first core back portion; and a plurality of second core segments that include: a second core back portion; and a second tooth portion; the mounting portion includes projecting portions that project on two circumferential sides from the first core back portion; and the first core segments and the second core segments that are adjacent to each other are fixed in a state in which facing side surfaces between the first core back portions and the second core back portions contact each other, and inner circumferential surfaces of the projecting portions and outer circumferential surfaces of the second core back portions are in contact.

Abstract: In the rotating electric machine, a first terminal and a second terminal extend from two of the slots and a third terminal extends from one of the slots, which is located between the two slots. The first terminal and the second terminal are connected to each other with use of a bus bar. The bus bar has: a first end portion to be connected to a distal end portion of the first terminal; a second end portion to be connected to a distal end portion of the second terminal; and an interconnecting portion configured to couple the first end portion and the second end portion to each other, which is arranged in the circumferential direction on the stator core side of the first end portion and the second end portion so as to pass on the slot side of the third terminal.

Abstract: A manufacturing method for a stator winding coil includes: a bulging portion forming step that forms a bulging portion on a conductor wire; a crank portion forming step that forms a crank portion on the central portion of the bulging portion; an oblique portion forming step that forms oblique portions on the conductor wire at two ends of the bulging portion; a rectilinear portion forming step that forms rectilinear portions on the conductor wire at opposite ends of the oblique portions from the bulging portion; and a circular arc forming step that forms the oblique portions into a circular arc shape after forming the rectilinear portions.

Abstract: Provided is an excellent insulating rotating electric machine having a small axial size and a small number of components. In the rotating electric machine according to the present invention, radially outer-side terminals and radially inner-side terminals extend from slots while a circumferential bending direction is alternately changed for each group of n radially outer-side terminals or n radially inner-side terminals after the extension thereof from the slots. A first angle formed between at least one of an oblique-side portion of each of the n radially inner-side terminals, which are continuous in the circumferential direction of the stator core and are bent in the same circumferential bending direction, and an oblique-side portion of each of the n radially outer-side terminals, which are continuous in the circumferential direction and are bent the same circumferential bending direction, and an end surface of a stator core monotonously decreases in the circumferential bending direction.

Abstract: Slot accommodation portions of single coils forming an armature coil are arranged so as to be stacked in the radial direction in a slot. On the anti-wire-connection side, a one-side extending portion which is a coil end extending from the slot accommodation portion in the first layer, and a one-side extending portion which is a coil end extending from the slot accommodation portion in the second layer, extend in the same direction. No insulation sheet is provided in intervals between coil ends extending in the same direction, such as the extending portions (23b) and (21b) and extending portions (21d) and (22d).

Abstract: While lamination of steel sheets to be included in a stator core having a plurality of tooth portions is performed through swaging at yoke portions and through swaging at tooth portions, the stator core is formed in such a way as to include the tooth portion having a portion that is pressed into another steel sheet through swaging and the tooth portion having no portion that is pressed into another steel sheet through swaging.

Abstract: A rotating electrical machine can increase the strength of divided cores and, in addition, can achieve both a reduction in iron loss and a high rigidity of the divided cores. The stator of the rotating electrical machine includes a stator core having radially divided cores arranged in a ring, each divided core being a laminate of magnetic steel sheets. Each divided core has a swaged portion in which the laminated magnetic steel sheets are bonded by swaging. The swaged portion is disposed in a core back portion, which is in contact with core back portions of divided cores located on both sides of the divided core at a position whose distance from an outer periphery of the core back portion is within ? of a radial length of the core back portion.

Abstract: A tooth groove is provided at a border portion between a tooth body portion and a protrusion. The angle between a tooth body portion lateral face which is a lateral face in the circumferential direction of the tooth body portion and a tooth body portion stop portion which is a face, of the tooth groove, continued from the tooth body portion lateral face is the right angle or an acute angle. The protrusion is rotated toward the outer side in the circumferential direction, to bring a protrusion stop portion into close contact with the tooth body portion stop portion, the protrusion stop portion being an outer-circumferential-side lateral face of the protrusion, thereby forming a shoe in a tooth.

Abstract: Winding bodies include: a first terminal wire that extends outward at a first axial end of a stator core from a radially innermost position inside slots; and a second terminal wire that extends outward at the first axial end of the stator core from a radially outermost position inside the slots, the first terminal wires are each led radially outward over coil ends of the stator winding, the second terminal wires are each led radially outward at positions that are nearer to the stator core than end portions of the first terminal wires that are led radially outward over the coil ends of the stator winding, and end portions of intraphase connecting second terminal wires are stacked in an axial direction with, placed in contact with, and connected to end portions of intraphase connecting first terminal wires that are subject to connection therewith.

Abstract: A stator of a rotating electrical machine includes: a plurality of annularly arranged stator cores; a stator winding attached to slots of the stator cores; and a shell (22) that retains the stator cores. In the stator of the rotating electrical machine, the ends of coil terminal wires (19), (20) on the innermost circumferential side and the outermost circumferential side of each slot are oriented in the axial direction of the stator; and side surfaces of the ends of the terminal wires (19), (20) are brought into contact with each other and are welded above the coil end (21) of the stator winding.

Abstract: Phase windings are configured radially inside first coil ends by connecting together tip portions of first terminals that are bent so as to extend outward from slots that are six slots apart, and radially outside the first coil ends by connecting together tip portions of second terminals that are bent so as to extend outward from slots that are five slots apart, and also connecting together tip portions of second terminals that are bent so as to extend outward from slots that are seven slots apart in modified positions of an inserted slot group, and by connecting together tip portions of second terminals that are bent so as to extend outward from slots that are six slots apart in regions other than the modified positions of the inserted slot group.

Abstract: An iron core member has: first divided yoke portions; second divided yoke portions alternately arranged with the first divided yoke portions; a first tooth portion extending from one circumferential end of each first divided yoke portion, a second tooth portion extending from the other circumferential end; a third tooth portion extending from one circumferential end of the second divided yoke portion on the second tooth portion side, and a fourth tooth portion extending from the other circumferential end. A tooth end portion of the first tooth portion and a tooth end portion of the adjacent fourth tooth portion are integrally joined at a first tooth end joint portion, and a tooth end portion of the second tooth portion and a tooth end portion of the adjacent third tooth portion are integrally joined at a second tooth end joint portion, thereby providing one continuous sheet of the core member.

Abstract: This stator includes: a plurality of divided core units 11a and 11b which respectively have: a plurality of annular divided cores 12a and 12b in each of which a plurality of tooth portions 13 are provided at a predetermined interval on the inner periphery of the corresponding one of annular back yoke portions 14 which are formed as a plurality of divided parts in the axial direction of the rotary electric machine; and a plurality of coils 15 respectively mounted to the tooth portions, wherein the plurality of divided core units are assembled in the axial direction such that the tooth portions thereof are coupled to each other via the annular back yoke portions.

Abstract: This method includes: a coil assembly step of combining a plurality of coil units to form a coil basket; a core insertion step of inserting inner cores of in the radial direction to the coil basket; and a fixation member insertion step of inserting a fixation member to the outer circumference of the inner core. In the core insertion step, the radial-direction position of the coil basket is retained at a core insertion time position shifted outward in the radial direction relative to a normal position after armature completion, and the inner cores are inserted in the radial direction to the coil basket. After the core insertion step, the radial-direction positions of the coil basket and the inner cores are moved inward in the radial direction to the normal position after armature completion.

Abstract: An armature core is configured by arranging into an annular shape: at least one first core segment that includes: a first core back portion; a first tooth portion; and a mounting portion that is formed on an outer circumferential portion of the first core back portion; and a plurality of second core segments that include: a second core back portion; and a second tooth portion; the mounting portion includes projecting portions that project on two circumferential sides from the first core back portion; and the first core segments and the second core segments that are adjacent to each other are fixed in a state in which facing side surfaces between the first core back portions and the second core back portions contact each other, and inner circumferential surfaces of the projecting portions and outer circumferential surfaces of the second core back portions are in contact.