摘要:
According to one aspect of the present invention, in a stator, each coil is a multi-layer coil that is formed by winding a conductor in a plurality of layers in an inside-outside direction of loops in a winding portion, and that includes on inner and outer peripheral sides of a coil end portion a plurality of lane change portions formed by the conductor, and a 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.
摘要:
According to one aspect of the present invention, in a stator, a bus bar portion of each coil is formed so that a longitudinal direction of a rectangular cross-section of a rectangular conductor extends perpendicularly to a direction of a central axis of the stator core, a terminal portion of the coil is formed so that the longitudinal direction of the rectangular cross-section of the rectangular conductor extends perpendicularly to the direction of the central axis of the stator core, and the bus bar portion is joined to the terminal portion of a different one of the coils.
摘要:
According to one aspect of the present invention, in a stator, each coil is a multi-layer coil that is formed by winding a conductor in a plurality of layers in an inside-outside direction of loops in a winding portion, and that includes on inner and outer peripheral sides of a coil end portion a plurality of lane change portions formed by the conductor, and a 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.
摘要:
A segmented-coil manufacturing method is configured so that, in order to reduce the number of segmented-coil manufacturing steps, the method manufactures a segmented coil (SC) by winding a flat rectangular conductor (D) and using forming dies, the segmented coil (SC) having a circular arc section (Sa1), a crank section (S4), and a protrusion-shaped section (S5). The forming die includes an outer peripheral surface forming upper die (M1), an inner peripheral surface forming upper die (M4), an inner peripheral surface forming lower die (M2), and an outer peripheral surface forming lower die (M3). The circular arc section (Sa1), the crank section (S4), and the protrusion-shaped section (S5) are formed while at least two surfaces of the outer peripheral surfaces of the flat rectangular conductor (D) are restrained by the outer peripheral surface forming upper die (M1), the inner peripheral surface forming upper die (M4), the inner peripheral surface forming lower die (M2), and the outer peripheral surface forming lower die (M3).
摘要:
A coil end shaping apparatus 20 shapes three flatwise bent portions f1 to f3 in a lead wire portion 11 extending from one end of a coil 10 by bringing first and second shaping dies 21 and 22 close to each other such that one (f1) of the flatwise bent portions is bent in the direction that is opposite to the direction in which the rest (f2 and f3) are bent. The second shaping die 22, which is a movable die, has an clearance portion 230 that prevents a portion of the lead wire portion 11 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 11 while the flatwise bent portions f1 and f2 on the base end side with respect to the flatwise bent portion f3 on the side closest to the free end, of the three flatwise bent portions f1 to f3, are shaped in the lead wire portion 11.
摘要:
In a stator, a bus bar portion includes a joint portion that is formed at an end of the bus bar portion and is joined to a terminal portion of a different one of the coils, and a connecting portion that is formed between the joint portion and a winding portion, and in the coils of each of three phases that are U-phase, V-phase, and W-phase, a first coil and a second coil that serve as the two coils joined to each other are 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 that are the coils disposed between the first coil and the second coil are located at a height closer to a stator core than the connecting portion of the first coil in a direction of a central axis of the stator core.
摘要:
A coil end shaping apparatus 20 shapes three flatwise bent portions f1 to f3 in a lead wire portion 11 extending from one end of a coil 10 by bringing first and second shaping dies 21 and 22 close to each other such that one (f1) of the flatwise bent portions is bent in the direction that is opposite to the direction in which the rest (f2 and f3) are bent. The second shaping die 22, which is a movable die, has an clearance portion 230 that prevents a portion of the lead wire portion 11 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 11 while the flatwise bent portions f1 and f2 on the base end side with respect to the flatwise bent portion f3 on the side closest to the free end, of the three flatwise bent portions f1 to f3, are shaped in the lead wire portion 11.