Abstract: A conductor shaping apparatus with first and second shaping dies that are movable toward and away from each other along a first direction, and that are moved toward each other to shape the at least one first bent portion and the at least one second bent portion, wherein one of the first and second shaping dies is configured to be moved away from the other along a second direction that is different from the first direction such that the conductor is not dragged when the first and second shaping dies are moved away from each other along the first direction after shaping of the first and second bent portions is completed.

Abstract: A method of manufacturing a stator for a rotary electric machine by disposing coils in a plurality of phases on a plurality of teeth of a stator core, one coil on one tooth, wherein in sequentially disposing the coils in the plurality of phases on the teeth, one coil on one tooth, toward one side in the circumferential direction of the stator core, the one end portion of each of the coils in each phase is inserted from the one side in the axial direction of the stator core, or from a direction that is orthogonal to the axial direction of the stator core, to be disposed between the one end portion and the other end portion of the immediately preceding coil in a separate phase disposed on the tooth so as to be aligned with the other end portion of the coil in the same phase.

Abstract: A three phase stator configured with phases that are U-phase, V-phase, and W-phase. The stator is configured such that a bus bar portion includes a joint that is formed at an end and is joined to a terminal portion of a different one of the coils. A connecting portion is formed between the joint portion and the winding portion. In the coils, a first coil and a second coil serve as the two coils joined to each other by the joint portion of the bus bar portion of the first coil and the terminal portion of the second coil, and ends of the terminal portions of middle coils are the coils disposed between the first coil and the second coil are located at a height closer to the stator core than the connecting portion of the first coil in a direction of a central axis of the stator core.

Abstract: A coil end shaping apparatus shapes three flatwise bent portions f1 to f3 in a lead wire portion extending from one end of a coil by bringing first and second shaping dies close to each other such that one of the flatwise bent portions is bent in the direction that is opposite to the direction in which the rest are bent. The second shaping die, which is a movable die, has an clearance portion that prevents a portion of the lead wire portion to be bent along the flatwise direction on the side closest to the free end from being restrained by not contacting the lead wire portion while the flatwise bent portions on the base end side with respect to the flatwise bent portion on the side closest to the free end, of the three flatwise bent portions, are shaped in the lead wire portion.

Abstract: A method for manufacturing a stator for a rotating electrical machine by placing coils in a stator core, wherein each of a plurality of teeth formed in a radial pattern in an inner periphery of an annular yoke portion in the stator core has tip-end parallel side surfaces formed in its tip end portion having a constant width in a circumferential direction, has intermediate tilted side surfaces continuous with the tip-end parallel side surfaces and formed in its portion whose width in the circumferential direction increases closer to an outer periphery, and has base-end parallel side surfaces continuous with the intermediate tilted side surfaces and formed in its base end portion having a constant width in the circumferential direction.

Abstract: A coil installation method for installing a coil on a tooth of a stator core to manufacture a stator for a rotary electric machine, the coil installation method including forming the coil such that a rectangular wire is wound into a generally quadrangular shape so as to form three or more winding portions overlapping in a radial direction of the stator core and such that the winding portion positioned on an outer peripheral side in the radial direction has a larger width directed in a circumferential direction of the stator core.

Abstract: A method of manufacturing a rotor according to the present invention includes: a process of stacking a plurality of electromagnetic steel plates on a jig 30 to fix the electromagnetic steel plates to the jig 30, and a process of inserting magnets 21 into a plurality of respective openings 11 included in a rotor core 10 in which the plurality of electromagnetic steel plates are stacked on one another. The magnets 21 are inserted into the respective openings 11 while a structure 80 including the rotor core 10 and the jig 30 is vibrated at a resonance frequency of the structure 80.

Abstract: A stator configured with an annular stator core, and a plurality of coils mounted on the stator core. The bus bar portion being connected to the terminal portion of a different one of the coils of the same phase. The coil is a multi-layer coil that is formed by winding the conductor in a plurality of layers in an inside-outside direction of loops in the winding portion, and that includes on inner and outer peripheral sides of a coil end portion of the coil a plurality of lane change portions formed by the conductor. The bus bar portion is embedded in a clearance between the lane change portions of the coil of a different phase placed between the coils of the same phase which are connected to each other.

Abstract: A coil end shaping apparatus shapes a plurality of edgewise bent portions that are bent in the edgewise direction in a lead wire portion extending from one end of a coil, and includes first and second shaping dies capable of approaching each other to shape the edgewise bent portions provided on the base end side with respect to the edgewise bent portion e4 that is the closest to the free end side among the plurality of edgewise bent portions, and a third shaping die capable of cooperating with the second shaping die to shape the edgewise bent portion that is the closest to the free end side.

Abstract: A coil installation method for installing a coil on a tooth of a stator core to manufacture a stator for a rotary electric machine, the coil installation method including forming the coil such that a rectangular wire is wound into a generally quadrangular shape so as to form three or more winding portions overlapping in a radial direction of the stator core and such that the winding portion positioned on an outer peripheral side in the radial direction has a larger width directed in a circumferential direction of the stator core.

Abstract: A coil end shaping apparatus shapes three flatwise bent portions f1 to f3 in a lead wire portion extending from one end of a coil by bringing first and second shaping dies close to each other such that one of the flatwise bent portions is bent in the direction that is opposite to the direction in which the rest are bent. The second shaping die, which is a movable die, has an clearance portion that prevents a portion of the lead wire portion to be bent along the flatwise direction on the side closest to the free end from being restrained by not contacting the lead wire portion while the flatwise bent portions on the base end side with respect to the flatwise bent portion on the side closest to the free end, of the three flatwise bent portions, are shaped in the lead wire portion.

Abstract: A method of manufacturing a rotor according to the present invention includes: a process of stacking a plurality of electromagnetic steel plates on a jig 30 to fix the electromagnetic steel plates to the jig 30, and a process of inserting magnets 21 into a plurality of respective openings 11 included in a rotor core 10 in which the plurality of electromagnetic steel plates are stacked on one another. The magnets 21 are inserted into the respective openings 11 while a structure 80 including the rotor core 10 and the jig 30 is vibrated at a resonance frequency of the structure 80.

Abstract: A conductor shaping apparatus with first and second shaping dies that are movable toward and away from each other along a first direction, and that are moved toward each other to shape the at least one first bent portion and the at least one second bent portion, wherein one of the first and second shaping dies is configured to be moved away from the other along a second direction that is different from the first direction such that the conductor is not dragged when the first and second shaping dies are moved away from each other along the first direction after shaping of the first and second bent portions is completed.

Abstract: A method for manufacturing a stator for a rotating electrical machine by placing a plurality of coils in a stator core, wherein each of a plurality of teeth formed in a radial pattern in an inner periphery of an annular yoke portion in the stator core has tip-end parallel side surfaces at its tip end portion having a constant width in a circumferential direction, and has base-end tilted side surfaces in its base end portion whose width in the circumferential direction increases closer to an outer periphery.

Abstract: A method for manufacturing a stator for a rotating electrical machine by placing coils in a stator core, wherein each of a plurality of teeth formed in a radial pattern in an inner periphery of an annular yoke portion in the stator core has tip-end parallel side surfaces formed in its tip end portion having a constant width in a circumferential direction, has intermediate tilted side surfaces continuous with the tip-end parallel side surfaces and formed in its portion whose width in the circumferential direction increases closer to an outer periphery, and has base-end parallel side surfaces continuous with the intermediate tilted side surfaces and formed in its base end portion having a constant width in the circumferential direction.

Abstract: A method of manufacturing a stator for a rotary electric machine by disposing coils in a plurality of phases on a plurality of teeth of a stator core, one coil on one tooth, wherein in sequentially disposing the coils in the plurality of phases on the teeth, one coil on one tooth, toward one side in the circumferential direction of the stator core, the one end portion of each of the coils in each phase is inserted from the one side in the axial direction of the stator core, or from a direction that is orthogonal to the axial direction of the stator core, to be disposed between the one end portion and the other end portion of the immediately preceding coil in a separate phase disposed on the tooth so as to be aligned with the other end portion of the coil in the same phase.

Abstract: A stator includes: a stator core having a plurality of slots and teeth parts; and coils each formed by winding a flat conductor and disposed in the slots. Of the corners of the rectangular cross-section of the flat conductor, a first corner located on the inner circumference side of the coil when the flat conductor is wound to form the coil is provided with a round chamfer having a radius larger than that of another corner. When the coil is inserted into the slots of stator core elements, the rectangular cross-section of the coil is disposed such that the first corner faces toward the outer circumference side of the stator.

Abstract: A coil end shaping apparatus shapes a plurality of edgewise bent portions that are bent in the edgewise direction in a lead wire portion extending from one end of a coil, and includes first and second shaping dies capable of approaching each other to shape the edgewise bent portions provided on the base end side with respect to the edgewise bent portion e4 that is the closest to the free end side among the plurality of edgewise bent portions, and a third shaping die capable of cooperating with the second shaping die to shape the edgewise bent portion that is the closest to the free end side.

Abstract: A stator configured with an annular stator core, and a plurality of coils mounted on the stator core. The bus bar portion being connected to the terminal portion of a different one of the coils of the same phase. The coil is a multi-layer coil that is formed by winding the conductor in a plurality of layers in an inside-outside direction of loops in the winding portion, and that includes on inner and outer peripheral sides of a coil end portion of the coil a plurality of lane change portions formed by the conductor. The bus bar portion is embedded in a clearance between the lane change portions of the coil of a different phase placed between the coils of the same phase which are connected to each other.

Abstract: A three phase stator configured with phases that are U-phase, V-phase, and W-phase. The stator is configured such that a bus bar portion includes a joint that is formed at an end and is joined to a terminal portion of a different one of the coils. A connecting portion is formed between the joint portion and the winding portion. In the coils, a first coil and a second coil serve as the two coils joined to each other by the joint portion of the bus bar portion of the first coil and the terminal portion of the second coil, and ends of the terminal portions of middle coils are the coils disposed between the first coil and the second coil are located at a height closer to the stator core than the connecting portion of the first coil in a direction of a central axis of the stator core.