An assembling device (10) includes a first arranging section (11), a second arranging section (12), eighteen support arms (13) for supporting coil segments (4), a feeding part (14), and a controller (16). When the controller (16) drives a motor (35) to rotate the feeding part (14) in a counterclockwise direction D1, a pressing roller (14c) rolls in the direction D1 along a first guide portion (11a), and presses a base part (21) of the eighteenth support arm (13) in the direction D1. Thus, the first to eighteenth support arms (13) are rotated in the direction D1 to insert the base parts (21) of the first to eighteenth support arms (13) sequentially in a second guide portion (12a) of the second arranging section (12), so that the first to eighteenth support arms (13) are rotated in a clockwise direction D2 to assemble the coil segments (4) while overlapping with one another.

Certain aspects relate to a continuous winding formed from a conductor of rectangular cross-section, the winding having a compound bend in the crowns connecting successive linear segments where the compound bend does not stress the conductor insulation to its failure point. The compound bend can be formed by applying force to the conductor in a first direction, thereby shaping a first bend in the conductor to form a u-shaped conductor having a crown and two linear segments, where the crown includes a v-shaped bend and two straight segments on either side of the v-shaped bend that each connect to one of the linear segments. A second bend can be formed by applying force to the conductor in a second direction perpendicular to the first direction. The shape of the second bend can depend on the desired radius of the winding when circularly wound and positioned in a stator.

A manufacturing method of a rotary electric machine is disclosed. The rotary electric machine includes a stator provided with a stator iron core, which is cylindrical and in which slots are formed in a circumferential direction on an inner circumferential surface, and coils of phases that are each inserted into the slots, and a movable element provided with a movable element iron core supported in a rotatable manner relative to the stator and at least a pair of movable element magnetic poles provided in the movable element iron core. The method includes: a split flux coil formation step; a coil setting step; a stator iron core setting step; and a split flux coil collective insertion step.

A method for producing a coil of a compressor (1) which can be electrically driven, a coil which is produced in accordance with this method, and a stator and a compressor which can be electrically driven. The production process for the coil includes the steps of: producing (100) a first winding (101) of the coil (12), producing (200) a second winding (102) of the coil (12), and compacting (300) the first winding (101) and the second winding (102) by virtue of an external action of force. A cross-sectional area (111, 112, 111, 112) of a wire of the first winding (101) and of the second winding (102) is deformed.

The present invention provides a stator for a rotating electrical machine, in particular for a motor vehicle, the stator (15) comprising: a body (27) having notches (37) which open axially into front (38) and rear (39) axial end walls of the body (27) and which are radially open in an inner wall (40) of the body (27), at least two windings (43), each forming a phase of the stator (15), each winding comprising modulating wire turns which comprise a series of axial strands (44) received in a series of associated notches (37) and connecting strands (45, 46) which connect the successive axial strands (44) and extend alternately beyond the front axial end wall (38) and beyond the rear axial end wall (39). One winding has a shorter wire length than the other winding.

A method of forming a winding for an electric machine includes forming a plurality of conductors having a substantially identical wire form with a plurality of end turns joining a plurality of slot segments, defining a first portion of the plurality of conductors as first conductors, rotating a second portion of the plurality of conductors about a central axis to mirror the first conductors, defining the second portion of the plurality of conductors as second conductors, combining select ones of the first conductors and select ones of the second conductors to form conductor pairs, and combining a plurality of conductor pairs to form a multi-conductor winding.

The invention proposes a stator for a rotating electric machine, in particular for a motor vehicle, the stator (15) including: a body (27) including notches (37) that are opened radially into an internal wall (40) of said body, at least one winding (43) forming a phase of the stator, the winding formed from turns (54) includes a first half-phase (49) and a second half-phase (50) that are superposed radially in the notch (37), each turn including a series of axial strands (44) that are received in a series of associated notches and connecting strands (45, 46) that connect the successive axial strands (44) by extending alternatively to protrude with respect to the body (27). A length of wire of each turn of one of the half-phases is larger than the length of wire of each turn of the other half-phase. Furthermore, one of the half-phases has a number of turns higher than that of the other half-phase.

An assembling device (10) includes a first arranging section (11), a second arranging section (12), eighteen support arms (13) for supporting coil segments (4), a feeding part (14), and a controller (16). When the controller (16) drives a motor (35) to rotate the feeding part (14) in a counterclockwise direction D1, a pressing roller (14c) rolls in the direction D1 along a first guide portion (11a), and presses a base part (21) of the eighteenth support arm (13) in the direction D1. Thus, the first to eighteenth support arms (13) are rotated in the direction D1 to insert the base parts (21) of the first to eighteenth support arms (13) sequentially in a second guide portion (12a) of the second arranging section (12), so that the first to eighteenth support arms (13) are rotated in a clockwise direction D2 to assemble the coil segments (4) while overlapping with one another.

Provided are a clamp jig for inhibiting an increase in the size of clamping equipment, and reducing the load during clamping by clamping after doing preliminary aligning of a segment end part; a stator manufacturing device; and a method for manufacturing a stator. The clamp jig 40 has a pair of clamp bodies 41, extended in a stator core radial direction, for clamping from both sides in the stator core circumferential direction the end part of an electric conductor, which is inserted in the stator core and welded; and a convex part 42 provided extending in the stator core axis direction at the bottom of the clamp body 41, the convex part being inserted between unwelded electric conductors.

A manufacturing method of a rotary electric machine is disclosed. The rotary electric machine includes a stator provided with a stator iron core, which is cylindrical and in which slots are formed in a circumferential direction on an inner circumferential surface, and coils of phases that are each inserted into the slots, and a movable element provided with a movable element iron core supported in a rotatable manner relative to the stator and at least a pair of movable element magnetic poles provided in the movable element iron core. The method includes: a split flux coil formation step; a coil setting step; a stator iron core setting step; and a split flux coil collective insertion step.