JP5516989B2 - Armature for rotating electrical machine - Google Patents

Description

  The present invention includes an armature core in which a plurality of slots extending in the axial direction of a cylindrical core reference surface are distributed in the circumferential direction of the core reference surface, and a coil wound around the armature core. The present invention relates to an armature for a rotating electric machine.

  In order to increase the space factor of the coil in the armature for a rotating electrical machine, segment conductors having a rectangular cross-sectional shape are regularly arranged in the slot of the armature core, and different segments projecting in the axial direction with respect to the armature core A technique of forming a coil by joining protruding portions of conductors is already known (see, for example, Patent Document 1). And in the structure provided with such a coil, as FIG. 5 of patent document 1 shows, the size of a coil end part can be achieved by arrange | positioning the protrusion part of a segment conductor regularly. .

  By the way, the coil is usually configured by being wound around the armature core for a plurality of turns, but it is general that all the joints between different turns have the same form as the joints between the projecting parts in the turns. Is difficult. Therefore, in order to reduce the size of the coil end portion, it is necessary to appropriately configure a joint portion (hereinafter, referred to as “atypical joint portion”) having a different form from the others. In the configuration of the above-mentioned Patent Document 1, the joint portion between the protruding portions by the connection portion 103 shown in FIG. 6 of the document is an odd-shaped joint portion. However, in Patent Document 1, there is no description referring to the configuration of the deformed joint portion from the viewpoint of miniaturization of the coil end portion, and depending on the configuration of the deformed joint portion, the coil end portion is enlarged in the axial direction. There is a fear.

JP 2000-69729 A

  Therefore, it is desired to realize an armature for a rotating electrical machine in which an increase in the axial size of the coil end portion due to the deformed joint portion is suppressed.

  An armature core according to the present invention, in which a plurality of slots extending in the axial direction of a cylindrical core reference surface are distributed in the circumferential direction of the core reference surface, and a coil wound around the armature core. A characteristic configuration of the armature for a rotating electrical machine provided is that the coil includes a conductor side portion disposed in the slot, and a pair of projecting portions that extend from the conductor side portion and project from the armature core to both sides in the axial direction. A plurality of segment conductors, wherein the conductor side portion is a radial second direction that is a radial first side from the radial first side of the core reference surface in the slot. Arranged in any layer from the first layer to the Nth layer (N is an even number of 2 or more) set in order toward the side, and the coil is connected to the adjacent layers in different slots with the conductor sides A pair of the segments in which the section is arranged A wave-wound coil portion formed by alternately joining the protruding portions of the conductors on one side in the axial direction and the other side in the axial direction toward the first circumferential direction that is one side in the circumferential direction of the core reference surface The wave winding coil portion is provided with the first end portion which is one end portion provided in the projecting portion of the segment conductor in which the conductor side portion is disposed in the first layer, and at the other end portion. Two wave-wound coil portions, each having a second end portion provided at the protruding portion of the segment conductor in which the conductor side portion is arranged on the Nth layer, and being shifted from each other in the circumferential direction of the core reference plane The second end portions of the two are joined together to form a wave winding coil set, and the protruding portion provided with the second end portion of one of the wave winding coil portions constituting the wave winding coil set is It is an irregular projection, and the irregular projection includes the irregular projection. The other projecting portion of the deformed segment conductor that is a segment conductor and the extending direction of the core reference surface in the circumferential direction are the same direction, the conductor side portion is disposed on the Nth layer, and the deformed projecting portion is provided. There is an offset region that is offset in the second radial direction side with respect to the normal protruding portion that is the protruding portion of the normal segment conductor that is not the segment conductor, and in the radial direction of the core reference surface in the offset region It is in the point arrange | positioned so that it may cross | intersect the said normal protrusion part seeing.

In the present application, the “rotary electric machine” is used as a concept including any of a motor (electric motor), a generator (generator), and a motor / generator functioning as both a motor and a generator as necessary.
Further, the “extending direction with respect to the circumferential direction” is used as a concept including not extending in the circumferential direction in addition to the circumferential first direction and the circumferential second direction opposite to the circumferential first direction.

According to this characteristic configuration, the joint portion between the second end portions of the two wave winding coil portions is a deformed joint portion. Then, one of the protrusions joined by the deformed joint is a deformed protrusion having a radial offset region, and is disposed so as to intersect the normal protrusion in the offset region as seen in the radial direction. That is, the deformed protrusion is disposed at a position overlapping the normal protrusion as viewed in the radial direction. Therefore, the enlargement of the axial direction of the coil end part resulting from a deformed junction part can be suppressed.
Moreover, according to said characteristic structure, the both ends of a wave winding coil set serve as the 1st end part provided in the protrusion part of the segment conductor by which the conductor side part is arrange | positioned in the 1st layer. That is, both ends of the wave winding coil set are located on the same radial side of the coil end portion. Therefore, the wiring for forming the power line and the neutral point can be easily handled, and the manufacturability of the armature for a rotating electrical machine can be improved.

  Here, in the normal segment conductor, the protruding portion on the first end portion side of the pair of protruding portions is a second circumferential portion opposite to the first circumferential direction from the conductor side portion of the extension source. The projecting portion on the second end side of the pair of projecting portions extends from the extending side of the conductor side portion toward the circumferential first direction side. Preferably, the deformed segment conductor is formed such that both of the pair of projecting portions extend from the extending side of the conductor side toward the circumferential second direction.

  According to this configuration, each of the pair of protrusions to be joined can be configured to bend and extend from the extending conductor side to the side closer to each other in the circumferential direction, and the shaft occupied by the protrusion The space in the direction can be kept small, and the coil end portion can be downsized in the axial direction.

  Further, the side on which the deformed protrusion is disposed with respect to the armature core in the axial direction of the core reference surface is the first axis direction, and the side opposite to the first axis direction is the second axis direction, In the normal segment conductor in which the conductor side portion is arranged in the odd-numbered layer, the protruding portion on the first axial direction side extends from the conductor side portion of the extension source toward the second circumferential direction side. And the projecting portion on the second axial direction side is formed so as to extend from the extending conductor side portion toward the first circumferential direction side, and the conductive side portion is an even-numbered side. The normal segment conductor arranged in the layer is formed such that the protruding portion on the first axial direction side extends from the extending side of the conductor toward the first circumferential direction side, Whether the protruding part on the second axial direction side is the conductor side part of the extension source It is preferable to be formed so as to extend toward the circumferential second direction.

  According to this configuration, the segment conductors can be regularly arranged without causing interference with each other, and the coil end portion can be downsized both in the axial direction and in the radial direction.

  Moreover, the joint part of said 2nd end with which the said wave winding coil set is provided sees in the radial direction of the said core reference plane, The said protrusion part in one said wave winding coil part which comprises the said wave winding coil set It is suitable if it arrange | positions in the position which overlaps with a mutual junction part.

  According to this structure, it can suppress that the position of a junction part disperse | distributes to the circumferential direction or an axial direction, and can attain simplification of a manufacturing process.

  Further, at least one of the pair of projecting portions to be joined includes an offset bent portion for offsetting a tip portion on the side approaching the other projecting portion in the radial direction of the core reference surface, It is preferable that the projecting portions are joined such that the joining surfaces formed at the respective tip portions are opposed to each other in the circumferential direction of the core reference surface.

  According to this configuration, it is possible to appropriately secure the distance between the joint portions that are adjacent to each other in the radial direction and to ensure electrical insulation between the joint portions.

  Further, it is preferable that the coil includes a plurality of the deformed protrusions, and all the deformed protrusions are disposed on the same side in the axial direction of the core reference plane with respect to the armature core.

  According to this configuration, it is possible to increase the size of the coil end portion in the radial direction according to the offset amount of the offset region included in the irregular protrusion only on one side in the axial direction with respect to the armature core. Thereby, when the field which comprises a rotary electric machine with the armature for rotary electric machines is assembled | attached to an armature, interference with a field and a deformed protrusion part can be suppressed.

  Further, the deformed protrusion is a first deformed protrusion, the normal protrusion is a first normal protrusion, and the coil corresponds to each phase of the first phase, the second phase, and the third phase. The armature core includes two adjacent slots for the first phase, two adjacent slots for the second phase, and adjacent to each other for the third phase. Are arranged so as to repeatedly appear in the circumferential order in the order described, and each phase coil includes two wave winding coil sets, each of the two wave winding coil sets being The wave winding coil portions are arranged in the circumferential direction of the core reference plane so as to be shifted from each other by one magnetic pole pitch, and one wave winding coil portion of each wave winding coil set includes the first winding coil portion. One end is joined A joint part between the wound coil sets is formed, and the projection part provided with one of the first end parts joined at the joint part between the wave winding coil sets is a second deformed projection part, and the second In the deformed protrusion, the other protrusion of the segment conductor including the second deformed protrusion is the same in the extending direction with respect to the circumferential direction of the core reference surface, and the conductor side portion is disposed in the first layer. And having an offset region that is offset toward the first radial direction side with respect to the second normal projecting portion that is the projecting portion of the segment conductor that does not include the second deformed projecting portion, It is preferable that they are arranged so as to intersect the second normal projecting portion when viewed in the radial direction of the core reference surface.

  According to this configuration, two wave winding coil sets can be connected in series with each other while suppressing an increase in the size of the coil end portion in the axial direction. Further, according to this configuration, for each of the two wave winding coil sets included in each phase coil, the conductor side portions constituting the wave winding coil set are included in the adjacent slot group of the same phase that repeatedly appears in the circumferential direction. It is arranged in any one slot. Therefore, it is possible to reduce a potential difference between conductor side portions arranged adjacent to each other in the same slot, and to suppress a short circuit between the segment conductors constituting the in-phase coil.

  Alternatively, the coil includes a phase coil corresponding to each of a first phase, a second phase, and a third phase, and the armature core includes two adjacent slots for the first phase. The two adjacent slots for the second phase and the two adjacent slots for the third phase are arranged so as to repeatedly appear in the circumferential direction in the order described, The phase coil includes two wave winding coil sets, and each of the two wave winding coil sets is shifted in the circumferential direction of the core reference plane by the sum or difference of one magnetic pole pitch and one slot pitch. It is also preferable that the two wave winding coil sets are connected in parallel to each other.

  According to this configuration, for each of the two wave winding coil sets connected in parallel to each other, the conductor side portion constituting the wave winding coil set repeatedly appears along the circumferential direction. The two wave winding coil sets are arranged in the same slot, and are arranged in two slots. Therefore, the distance between the permanent magnet and the electromagnet arranged in the field can be made uniform to suppress the difference in impedance between the two wave winding coil sets, and as a result, the circulating current can be suppressed. it can.

It is a perspective view of the 1st wave winding coil set concerning a first embodiment of the present invention. It is a perspective view of the normal segment conductor which concerns on 1st embodiment of this invention. It is a perspective view of the deformed segment conductor which concerns on 1st embodiment of this invention. It is a perspective view of the 1st wave winding coil part which concerns on 1st embodiment of this invention. It is a perspective view of the phase coil which concerns on 1st embodiment of this invention. It is a perspective view of the phase coil which concerns on 1st embodiment of this invention. 1 is a perspective view of a stator according to a first embodiment of the present invention. It is a wiring diagram of the 1st wave winding coil part and 2nd wave winding coil part which concern on 1st embodiment of this invention. It is a wiring diagram of the 3rd wave winding coil part and 4th wave winding coil part which concern on 1st embodiment of this invention. It is a schematic diagram which shows the arrangement | positioning state of the 10th layer segment conductor which concerns on 1st embodiment of this invention. It is a schematic diagram which shows the arrangement | positioning state of the 1st layer segment conductor which concerns on 1st embodiment of this invention. It is a perspective view of the 1st wave winding coil set which concerns on 2nd embodiment of this invention. It is a perspective view of the 1st wave winding coil part which concerns on 2nd embodiment of this invention. It is a perspective view of the phase coil which concerns on 2nd embodiment of this invention. It is a wiring diagram of the 1st wave winding coil part and 2nd wave winding coil part which concern on 2nd embodiment of this invention. It is a wiring diagram of the 3rd wave winding coil part and 4th wave winding coil part which concern on 2nd embodiment of this invention.

1. First Embodiment A first embodiment of an armature for a rotating electrical machine according to the present invention will be described with reference to the drawings (FIGS. 1 to 11). Here, the case where the armature for rotating electrical machines according to the present invention is applied to the stator 1 (see FIG. 7) of the inner rotor type rotating electrical machine will be described as an example. The coil 4 included in the stator 1 is configured by using a plurality of segment conductors 5 (see FIGS. 2 and 3), and includes a phase coil 41 corresponding to each phase. As shown in FIGS. 5 and 6, the phase coil 41 includes two wave winding coil sets 9 (first wave winding coil set 9 a and second wave winding coil set 9 b) which are arranged so as to be shifted from each other in the circumferential direction C. As shown in FIG. 1, each wave coil set 9 includes two wave coil portions 8 (see FIG. 4) that are arranged so as to be shifted from each other in the circumferential direction C. Part 82) are joined together. In such a configuration, the stator 1 according to the present embodiment is characterized in the form of a connecting portion between the two wave winding coil portions 8 constituting the wave winding coil set 9. Hereinafter, the configuration of the stator 1 according to the present embodiment will be described in the order of “the overall configuration of the stator”, “the configuration of the segment conductor”, “the configuration of the wave winding coil unit and the wave winding coil set”, and “the configuration of the phase coil”. To do.

  In the following description, unless otherwise specified, “axial direction L”, “circumferential direction C”, and “radial direction R” are defined with reference to an axial center of a cylindrical core reference surface S (see FIG. 7) described later. doing. Further, in the following description, “the first axial direction L1” represents the upper side along the axial direction L in FIG. 7, and “the second axial direction L2” represents the lower side along the axial direction L in FIG. To do. In the following description, as shown in FIG. 7, the “circumferential first direction C1” indicates that the stator 1 is viewed from the first axial direction L1 side (from the first axial direction L1 side to the second axial direction L2 side). The “circumferential second direction C2” represents a counterclockwise direction when the stator 1 is viewed from the first axial direction L1 side. The “inner diameter direction R1” represents a direction toward the inner side of the radial direction R of the core reference surface S, and the “outer diameter direction R2” represents a direction toward the outer side of the radial direction R of the core reference surface S. In the following description, each direction of the coil 4 and the members constituting the coil 4 is defined as a direction in a state where these are mounted on the stator core 2.

  In the present embodiment, the stator 1 and the stator core 2 correspond to the “armature for rotating electrical machine” and the “armature core” in the present invention, respectively. In the present embodiment, the radially inner direction R1 and the radially outer direction R2 correspond to the “diameter second direction” and the “diameter first direction” in the present invention, respectively.

1-1. Overall Configuration of Stator The overall configuration of the stator 1 according to this embodiment will be described. FIG. 1 shows a first wave winding coil set 9a which is one of two wave winding coil sets 9 constituting the phase coil 41 of each phase. Although details will be described later, the first wave winding coil set 9a includes a first wave winding coil portion 8a shown in FIG. 4 and a second wave winding coil portion 8b configured similarly to the first wave winding coil portion 8a (see FIG. 1 and the coil (shown highlighted by hatching) are connected to each other. The first wave winding coil portion 8a and the second wave winding coil portion 8b are configured by using a plurality of segment conductors 5 as shown in FIGS.

  As shown in FIGS. 5 and 6, the first wave winding coil set 9 a and the second wave winding coil set 9 b configured similarly to the first wave winding coil set 9 a are connected to each other. A coil 41 is formed. That is, in this example, the phase coil 41 includes two wave winding coil sets 9. 5 and 6 are perspective views of the same phase coil 41 as seen from different viewpoints. In order to facilitate the understanding of the invention, in FIG. 5, a tenth layer segment conductor 5j described later is hatched and emphasized, and in FIG. 6, a first layer segment conductor 5a described later is hatched and emphasized. It shows. And the edge part of each wave winding coil set 9 is joined with the connection member 21 (refer FIG. 7) for forming the power line side edge part 91 and the neutral point joined to the power line connected to a power supply. The neutral point side end portion 92 or the inter-set end portion 93 to be joined to another wave winding coil set 9 is used.

  In the present embodiment, the stator 1 is a stator used for a rotating electrical machine driven by three-phase alternating current (U phase, V phase, W phase). Therefore, the coil 4 included in the stator 1 includes a phase coil 41 corresponding to each of the U phase, the V phase, and the W phase. In addition, since the phase coil 41 of each phase with which the coil 4 is provided has the same structure (refer FIG. 7), below, it demonstrates without distinguishing especially the phase coil 41 of each phase. In the present embodiment, the U phase, the V phase, and the W phase correspond to the “first phase”, “second phase”, and “third phase” in the present invention, respectively.

  As shown in FIG. 7, the coil 4 including the three phase coils 41 is wound around the stator core 2 included in the stator 1 by wave winding. Here, the stator core 2 is formed using a magnetic material, and the slot 3 extending in the axial direction L of the cylindrical core reference surface S is formed in the circumferential direction of the core reference surface S so that the coil 4 can be wound. A plurality (48 in this example) of C are dispersedly arranged in C to form the stator core 2. The plurality of slots 3 are arranged at predetermined circumferential direction C intervals, and are provided so as to extend at least in the axial direction L. In the present embodiment, the slot 3 is formed in a groove shape extending in the axial direction L and the radial direction R and having a constant width in the circumferential direction C. Each slot 3 is formed so as to open on the radial inner side R1 side (open on the inner peripheral surface of the core) and open on both sides of the stator core 2 in the axial direction L (both axial end surfaces). As described above, the plurality of slots 3 are formed in the stator core 2 so as to extend radially from the axis of the stator core 2 in the radial direction R. The plurality of slots 3 have the same shape.

  In the stator core 2, slots 3 for U phase, V phase, and W phase are arranged so as to repeatedly appear along the circumferential direction C. In this example, the stator core 2 has two slots 3 adjacent to each other for the U phase and two slots 3 adjacent to each other for the V phase so that the number of slots per pole per phase is “2”. And two adjacent slots 3 for the W phase are arranged so as to repeatedly appear in the circumferential direction C in the order of description. That is, for each phase, adjacent slot groups each including two adjacent slots 3 are arranged along the circumferential direction C at a 6-slot pitch.

  In accordance with the configuration of the stator core 2 as described above, the phase coil 41 is arranged in an adjacent slot set in which the conductor side portions 31 that are portions disposed in the slots 3 are disposed at a 6-slot pitch along the circumferential direction C. It is configured to be arranged. Specifically, as shown in FIGS. 1 and 8, the conductor side portions 31 constituting the wave winding coil set 9 are arranged along the circumferential direction C at a pitch of 6 slots. And the phase coil 41 is provided with the two wave winding coil sets 9 arrange | positioned mutually shifted by 1 slot pitch with respect to the circumferential direction C, as shown in FIG.5 and FIG.6. Therefore, for each phase coil 41, two conductor side portions 31 having a positional relationship shifted from each other by one slot pitch in the circumferential direction C are arranged at a six-slot pitch along the circumferential direction C, and the slot 3 is formed as described above. Each phase coil 41 can be appropriately wound around the arranged stator core 2.

  In each slot 3, N conductor sides 31 (N is an even number of 2 or more, N = 10 in this example) are arranged in a row so as to be overlapped in the radial direction R so as to be aligned at the same circumferential direction C. The That is, in this example, the coil 4 has a 10-layer winding structure. In the present specification, each radial R position of the plurality of conductor side portions 31 arranged in the radial direction R in the slot 3 is represented by a layer. Specifically, with respect to the position of the conductor side portion 31 in each slot 3, the position closest to the radially outward direction R2 is defined as the first layer, and the second layer and the third layer are sequentially directed from the position toward the radially inward direction R1.・ ・ ・ ・ ・ ・ 10th layer. As described above, the conductor side portion 31 is any one of the first layer to the Nth layer (the tenth layer in this example) set in order from the radially outer direction R2 side to the radially inner direction R1 side in the slot 3. Placed in a layer.

  By the way, the “cylindrical core reference surface S” described above is a virtual surface that serves as a reference for the arrangement and configuration of the slots 3. In the present embodiment, as shown in FIG. 7, the core inner peripheral surface which is a virtual cylindrical surface including the end surface on the radially inner direction R1 side of the teeth 32 positioned between the slots 3 adjacent to each other in the circumferential direction C. The cylindrical core inner circumferential surface can be defined as the “cylindrical core reference surface S” in the present invention. Moreover, it is concentric with the cylindrical inner peripheral surface, and the cross-sectional shape in the axial direction L (when viewed along the axial direction L) is similar to the cross-sectional shape in the axial direction L of the core inner peripheral surface. Cylindrical surfaces (including virtual surfaces) in relation can also be the “cylindrical core reference surface S” in the present invention. For example, the outer peripheral surface of the stator core 2 excluding the mounting protrusions 33 to be described later can be a “cylindrical core reference surface S”.

  In the present embodiment, as shown in FIG. 7, mounting protrusions 33 for mounting to a case or the like are provided at a plurality of locations in the circumferential direction C on the outer peripheral surface of the stator core 2. The mounting protrusion 33 is a protruding strip portion that protrudes toward the radially outward direction R2 with respect to other portions of the outer peripheral surface of the stator core 2 and extends in the axial direction L. The mounting protrusion 33 is formed with a mounting hole 33a penetrating in the axial direction L.

  And although illustration is abbreviate | omitted, on the radial direction R1 side of the stator 1 (stator core 2), the rotor as a field magnet provided with the permanent magnet or the electromagnet is arrange | positioned so that relative rotation with respect to the stator 1 is possible. Then, the rotor is rotated by the rotating magnetic field generated from the stator 1. Thus, the stator 1 according to the present embodiment is an inner rotor type and a stator that is an armature for a rotating field type rotating electrical machine. In other words, the stator 1 is disposed to face the rotor as a field in the radial direction R and constitutes a rotating electrical machine together with the rotor.

  The stator core 2 is, for example, a laminated structure in which a plurality of annular plate-shaped electromagnetic steel plates are laminated, or a magnetic material powder (a powder material formed by pressing a magnetic material). Can be formed as In the present embodiment, the stator core 2 is formed with a plurality of slots 3 so that the number of slots per phase per pole is “2”, but the number of slots per phase per pole can be changed as appropriate. It is. For example, the number of slots per pole per phase can be set to “1”, “3”, or the like. Of course, the number of wave winding coil sets 9 provided in the phase coil 41 can be appropriately changed according to the number of slots per phase per phase. Further, the number of phases of the AC power source for driving the rotating electrical machine can be appropriately changed, and can be set to, for example, “1”, “2”, “4”, “6”, and the like.

1-2. Configuration of Segment Conductor Next, the configuration of the segment conductor 5 constituting the phase coil 41 according to the present embodiment will be described with reference to FIG. 2 and FIG. The segment conductor 5 is a conductor corresponding to the phase coil 41 divided into a plurality of parts, and the phase coil 41 is configured by joining ends of the plurality of segment conductors 5. In this embodiment, as shown in FIGS. 2 and 3, the segment conductor 5 has a rectangular cross section perpendicular to the extending direction (equal to the energizing direction), more specifically, a rectangular shape with corners arcuate. It is composed of a linear conductor having a shape. The segment conductor 5 is basically the same except for bent portions (first circumferential bent portion 11, second circumferential bent portion 12, first radial bent portion 13, second radial bent portion 14) described later. In addition, they have the same cross-sectional shape related to the position in the extending direction. The material constituting this linear conductor can be, for example, copper or aluminum. Further, the surface of the linear conductor is an insulation made of resin or the like (for example, polyimide or the like) except for a part of the joint portion 61 (joint surface 60) or the like that is a portion for electrically connecting to the different segment conductors 5. It is covered with a film.

  The segment conductor 5 includes a conductor side portion 31 disposed in the slot 3 and a pair of projecting portions 7 extending from the conductor side portion 31 and projecting from the stator core 2 to both sides in the axial direction L. The conductor side portion 31 is a portion of the segment conductor 5 that is inserted into the slot 3 of the stator core 2, and has a shape that matches the shape of the slot 3. Here, the conductor side portion 31 is formed in a straight line extending in parallel with the axial direction L. And the conductor side part 31 is arrange | positioned in the slot 3 in the direction in which the short side in the rectangular cross section orthogonal to the extension direction of a linear conductor becomes parallel to the radial direction R, and a long side is parallel to the circumferential direction C. .

  In the following, when the segment conductor 5 is divided based on the layer in the slot 3 in which the conductor side portion 31 is arranged, the number of the layer is M (in this example, M is an integer of 1 to 10), It is called “Mth layer segment conductor”. That is, in this example, as shown in FIG. 1, as the segment conductor 5, the first layer segment conductor 5a, the second layer segment conductor 5b, the third layer segment conductor 5c, the fourth layer segment conductor 5d, the fifth layer segment It has a conductor 5e, a sixth layer segment conductor 5f, a seventh layer segment conductor 5g, an eighth layer segment conductor 5h, a ninth layer segment conductor 5i, and a tenth layer segment conductor 5j.

  The protruding portion 7 includes a first circumferential direction bent portion 11, a second circumferential direction bent portion 12, and a main body portion 73 that constitutes a portion between the first circumferential direction bent portion 11 and the second circumferential direction bent portion 12. The first radial direction bent portion 13 is provided. The first circumferential direction bent portion 11 is a bent portion for setting the extending direction of the main body portion 73 to a direction inclined in the circumferential direction C with respect to the extending direction of the conductor side portion 31. The inclination angle in the extending direction of the main body 73 is determined according to the bending angle of the first circumferential bending portion 11.

  Here, if the bending angle of the first circumferential direction bending portion 11 is defined with reference to a direction (0 degree) extending in a direction away from the stator core 2 in parallel to the extending direction (axial direction L) of the conductor side portion 31, The bending angle of the one-circumferential bending portion 11 is set to an acute angle. Therefore, the main body 73 is formed so as to be gradually separated from the stator core 2 in the axial direction L. In other words, the main body 73 is formed so as to be directed to one side in the circumferential direction C as it is separated from the stator core 2 in the axial direction L.

  The second circumferentially bent portion 12 is an extension of the main body portion 73 when the extension direction of the tip end portion (the end portion on the opposite side of the extending conductor side portion 31) is viewed in the radial direction R. It is a bending part for making it the direction inclined with respect to the direction. In this example, the second circumferentially bent portion 12 is formed so that the extending direction of the tip end portion of the protruding portion 7 is a direction parallel to the axial direction L.

  The first radial bent portion 13 has a diameter with respect to a portion on the conductor side portion 31 side so that the distal end portion of the projecting portion 7 is positioned in the same radial direction R as the projecting portion 7 to be joined. This is a bent portion that is offset in the direction R. In this example, the offset amount in the radial direction R of the first radial bent portion 13 is set to half the thickness (half layer) of the radial direction R of the linear conductor (see FIGS. 10 and 11). Further, in the present example, the first radial direction bent portion 13 is provided at a position adjacent to the distal end portion side of the protruding portion 7 with respect to the second circumferential direction bent portion 12. In the present embodiment, the first radial direction bent portion 13 corresponds to an “offset bent portion” in the present invention.

  The tip of the protrusion 7 is basically joined to the tip of the protrusion 7 of another segment conductor 5 to be joined. Therefore, the length of the protruding portion 7 in the circumferential direction C is basically the circumference of the conductor side portion 31 from which the protruding portion 7 extends and the conductor side portion 31 of the other segment conductor 5 to be joined. It is set according to the separation distance in the direction C. Here, the extending length in the circumferential direction C of each member is the length in the circumferential direction C when projected onto a plane orthogonal to the axial direction L. In this example, the separation distance is basically set to 6 slot pitches, and the length of the protruding portion 7 in the circumferential direction C is basically set to approximately half thereof (about 3 slot pitches). ing.

  The phase coil 41 is configured by using a plurality of segment conductors 5 configured as described above. The segment conductor 5 includes only a normal segment conductor 51 that constitutes a large part of the phase coil 41 and a specific portion. The deformed segment conductor 52 used is included. As shown in FIG. 2, the normal segment conductor 51 is a segment conductor 5 having the above-described configurations, in which the bending directions of the first circumferential bending portions 11 on both sides in the axial direction L are opposite to each other. That is, the protruding portion 7 on the first axial direction L1 side of the normal segment conductor 51 and the protruding portion 7 on the second axial direction L2 side extend from the conductor side portion 31 and then are opposite to each other in the circumferential direction C. The body portion 73 is formed to extend toward the opposite side and is inclined to opposite sides in the circumferential direction C with respect to the conductor side portion 31 of the extension source.

  On the other hand, as shown in FIG. 3, the odd-shaped segment conductor 52 further has a second radial bent portion 14 in addition to the above-described components, and a bending direction of the first circumferential bent portion 11 on both sides in the axial direction L. Are segment conductors 5 in the same direction. That is, the protruding portion 7 on the first axial direction L1 side of the deformed segment conductor 52 and the protruding portion 7 on the second axial direction L2 side extend from the conductor side portion 31 and then are on the same side in the circumferential direction C. The main body 73 is formed to extend toward the same side in the circumferential direction C with respect to the extending conductor side portion 31.

  As shown in FIGS. 3, 10, and 11, the second radial bending portion 14 is configured so that the tip side portion (tip side portion) of the protruding portion 7 is in the radial direction with respect to the conductor side portion 31 side. This is a bent portion offset to R. In this example, the amount of offset in the radial direction R of the second radial direction bent portion 14 is the thickness (one layer) of the linear conductor in the radial direction R. The odd-shaped segment conductor 52 includes the second radial bent portion 14 only in one of the pair of protruding portions 7 (in this example, the protruding portion 7 on the first axial direction L1 side).

  Hereinafter, the protruding portion 7 that does not include the second radially bent portion 14 is referred to as a “normal protruding portion 71”, and the protruding portion 7 that includes the second radially bent portion 14 is referred to as a “deformed protruding portion 72”. That is, the normal segment conductor 51 includes normal protrusions 71 on both sides in the axial direction L. On the other hand, the deformed segment conductor 52 includes a deformed protrusion 72 on one side in the axial direction L (in this example, the first axial direction L1 side) and the other side in the axial direction L (in this example, the second axial direction L2 side). Is normally provided with a protrusion 71. That is, in this example, the side in which the deformed protrusion 72 is disposed with respect to the stator core 2 in the axial direction L is the axial first direction L1. Since the deformed segment conductor 52 has the same bending direction of the first circumferential bent portions 11 on both sides in the axial direction L, the deformed projecting portion 72 includes the deformed segment conductor 72 provided with the deformed projecting portion 72. The normal projecting portion 71 that is the other projecting portion 7 of 52 and the extending direction with respect to the circumferential direction C are the same direction.

  The deformed protrusion 72 includes the second radial bent portion 14 as described above, so that at least a part of the tip side portion of the second radial bent portion 14 is the same in the slot 3. This is a region that is offset to one side in the radial direction R with respect to the normal protrusion 71 that is the protrusion 7 of the normal segment conductor 5 in which the conductor side portion 31 is disposed in the layer. Hereinafter, this area is referred to as an offset area X. In the present embodiment, as shown in FIG. 3, the entire main body 73 is an offset region X.

1-3. Configuration of Wave-Wound Coil Unit and Wave-Wound Coil Set Next, the configuration of the wave-winding coil unit 8 including the segment conductor 5 and the wave-coiling coil set 9 including the wave-winding coil unit 8 will be described. As described above, each phase coil 41 includes two wave winding coil sets 9, that is, a first wave winding coil set 9a and a second wave winding coil set 9b. And the 1st wave winding coil set 9a and the 2nd wave winding coil set 9b are the same except for the part which comprises the junction part 61a (refer FIG. 5, FIG. 6) between these wave winding coil sets which is these junction parts. It is configured. Each wave winding coil set 9 is configured by using two wave winding coil portions 8 constituted by the segment conductors 5.

  As shown in FIGS. 4, 8, and 9, the wave winding coil portion 8 includes the protruding portions 7 of the pair of segment conductors 5 in which the conductor side portions 31 are arranged in mutually adjacent layers in different slots 3. The one side of the axial direction L and the other side of the axial direction L are alternately joined sequentially toward the circumferential first direction C1 side. As shown in FIGS. 8 and 9, the phase coil 41 according to the present embodiment includes a first wave winding coil portion 8 a and a second wave winding coil that constitute the first wave winding coil set 9 a as the wave winding coil portion 8. Part 8b, and a third wave winding coil part 8c and a fourth wave winding coil part 8d constituting the second wave winding coil set 9b.

  The four wave winding coil portions 8a to 8d are the same except for the type of the segment conductor 5 provided with the end portions (first end portion 81 and second end portion 82 described later) and the type of the first end portion 81. It is configured. Here, the type of the segment conductor 5 is the type of the normal segment conductor 51 or the deformed segment conductor 52, and the type of the first end 81 is the power line side end 91, the neutral point. This is the type of the side end portion 92 or the end portion 93 between the sets. Below, centering on the structure of the 1st wave winding coil part 8a is demonstrated. About the 2nd wave winding coil part 8b, the 3rd wave winding coil part 8c, and the 4th wave winding coil part 8d, it is the same as that of the 1st wave winding coil part 8a about the point which is not demonstrated especially.

1-3-1. Configuration of First Wave Coil Part As shown in FIGS. 4 and 8A, the first wave coil part 8a has a conductor side part 31 in a slot 3 separated from each other by 6 slot pitches (one magnetic pole pitch). The odd-numbered layer segment conductors and the even-numbered layer segment conductors of the layers adjacent to each other are sequentially joined in the circumferential first direction C1 side. Here, the odd-numbered segment conductor is the segment conductor 5 in which the conductor side portion 31 is disposed in the odd-numbered layer, and in this example, the first-layer segment conductor 5a, the third-layer segment conductor 5c, and the fifth-layer segment. A conductor 5e, a seventh layer segment conductor 5g, and a ninth layer segment conductor 5i are included. The even layer segment conductor is the segment conductor 5 in which the conductor side portion 31 is disposed in the even layer. In this example, the second layer segment conductor 5b, the fourth layer segment conductor 5d, and the sixth layer segment conductor. 5f, an eighth layer segment conductor 5h, and a tenth layer segment conductor 5j.

  As described above, in the present embodiment, the stator core 2 is provided with the slots 3 so that the number of slots per pole per phase is “2”. FIG. 8 and FIG. Only slot 3 is shown. In the following, the slots 3 of each phase are composed of the slots 3 on the side of the first circumferential direction C1 of the two slots 3 of the same phase adjacent to each other in the circumferential direction C (corresponding to one magnetic pole pitch in this example). 6 slot pitch) A group of separated slots 3 is referred to as a “first slot group”, and two slots 3 in the same phase adjacent to each other in the circumferential direction C are composed of slots 3 on the circumferential second direction C2 side. A group of slots 3 separated by the slot pitch is referred to as a “second slot group”. In the example of FIG. 8, slot numbers “2”, “8”, “14”, “20”, “26”, “32”, “38”, “44” constitute the first slot group. The slot 3 with slot numbers “1”, “7”, “13”, “19”, “25”, “31”, “37”, “43” constitutes the second slot group.

  As shown in FIG. 8A, the first wave-wound coil portion 8a is constituted by a plurality (40 in this example) of segment conductors 5 disposed in each slot 3 constituting the first slot group. . All the segment conductors 5 constituting the first wave-wound coil portion 8a are normal segment conductors 51. 8 and 9, the numbers marked in the slots 3 are adjacent to each other along the current path in order from the power line side along the current path between the power line and the neutral point. The identification numbers are assigned in order from “1” for each pair of segment conductors 5. In the line extending in the horizontal direction in the figure from the identification number, the solid line represents the protruding portion 7 disposed on the first axial direction L1 side with respect to the stator core 2, and the broken line is the first axis with respect to the stator core 2. The protrusion part 7 arrange | positioned at the two directions L2 side is represented. Further, a circle connecting solid line or broken line segments represents a joint 61 between the tips of the protrusions 7. In the present embodiment, as shown in FIG. 4, the plurality of joint portions 61 are arranged in the radial direction R so as to be aligned at the same circumferential direction C.

  The first end portion 81 that is one end portion of the first wave-wound coil portion 8a is provided on the protruding portion 7 of the first layer segment conductor 5a, and the second end portion 82 that is the other end portion is the Nth end. The layer segment conductor (in this example, the tenth layer segment conductor 5j) is provided on the protruding portion 7. Specifically, as shown in FIG. 8 (a), the first end 81 protrudes from the first layer segment conductor 5a with the identification number “1” arranged in the slot 3 with the slot number “14”. The second end 82 is provided in the protruding portion 7 of the tenth layer segment conductor 5j having the identification number “20” arranged in the slot 3 having the slot number “8”. And the 1st end part 81 of the 1st wave winding coil part 8a is made into the power line side edge part 91 joined to a power line.

  Looking at the configuration of the first wave winding coil portion 8a in more detail, as shown in FIG. 8 (a), four odd layer segment conductors (for example, the first layer segment conductor 5a) and four even layer segment conductors ( For example, the second layer segment conductors 5b) are alternately joined so as to make one round of the stator core 2 in the circumferential direction C, thereby forming a coil for one turn that makes one round (one round) of the stator core 2. In order to realize such joining, the odd-numbered layer segment conductor has a protruding portion 7 on the first axial direction L1 side (a protruding portion 7 represented by a solid line in the figure) that extends from the extending conductor side portion 31 to the second circumferential portion. The protrusion 7 (protrusion represented by a broken line in the figure) on the second axial direction L2 side is formed so as to extend toward the direction C2 and the first circumferential direction from the conductor side 31 of the extension source. It is formed to extend toward the C1 side. The even layer segment conductor is formed so that the protruding portion 7 on the first axial direction L1 side extends from the extending conductor side portion 31 toward the first circumferential direction C1 side, The protruding portion 7 on the direction L2 side is formed so as to extend from the extending conductor side portion 31 toward the second circumferential direction C2. The deformed segment conductor 52 is formed so that the protruding portions 7 on both sides in the axial direction L extend from the extending conductor side portion 31 toward the same side in the circumferential direction C (FIG. 8B). ), See FIG.

  From another point of view, the segment conductor 5 excluding the deformed segment conductor 52, that is, the normal segment conductor 51, has the protruding portion 7 on the first end portion 81 side of the pair of protruding portions 7, and the extending conductor side. The projecting portion 7 on the second end portion 82 side of the pair of projecting portions 7 is formed so as to extend from the portion 31 toward the second circumferential direction C2 side. It is formed to extend toward the direction C1.

  In the entire first wave winding coil portion 8a, a coil for five turns is formed by the 20 odd layer segment conductors and the 20 even layer segment conductors. In addition, in the connection part between the turns adjacent to radial direction R, the conductor side part 31 is arrange | positioned at the layer of the radial direction R1 side of the two adjacent layers which comprise the turn of the radial direction R2 side. An odd-numbered layer segment in which a conductor side portion 31 is arranged in a layer on the radially outward direction R2 side of two adjacent layers constituting a turn on the radially inward direction R1 side with a layer segment conductor (for example, a second layer segment conductor) A conductor (for example, a third layer segment conductor) is joined. Accordingly, the entire first wave-wound coil portion 8a, including the connecting portion between the turns, is formed between the protruding portions 7 of the pair of segment conductors 5 in which the conductor side portions 31 are disposed in mutually adjacent layers in different slots 3. Are sequentially joined to one side in the axial direction L and the other side in the axial direction L toward the circumferential first direction C1 side.

  By the way, in this embodiment, the 1st radial direction bending part 13 is formed in each of the protrusion part 7. As shown in FIG. And the 1st radial direction bending part 13 formed in each of a pair of protrusion part 7 of joining object approaches the other protrusion part 7 (joining object) in radial direction R, as shown in FIG.10 and FIG.11. It is comprised so that the front-end | tip part of the protrusion part 7 may be offset to the side. In this example, the extending conductor side portions 31 of the pair of protrusions 7 to be joined are arranged in layers adjacent to each other in the slot 3, and the offset amount of the first radial bent portion 13 is , And half the thickness of the linear conductor in the radial direction R (half layer). As a result, the pair of protrusions 7 to be joined are joined so that the joining surfaces 60 (see FIGS. 2 and 3) formed at the respective leading ends face each other in the circumferential direction C. By providing such a configuration, it is easy to appropriately secure the distance between the joint portions 61 adjacent in the radial direction and to secure the electrical insulation between the joint portions 61.

1-3-2. Configuration of Second Wave Coil Part As shown in FIGS. 1 and 8B, the second wave coil part 8b has a first end 81 that is between the set end part 93 of the first wave coil set 9a. The segment conductor 5 is configured in the same manner as the first wave-wound coil portion 8a except that the segment conductor 5 provided with the second end portion 82 is a deformed segment conductor 52.

  The second wave winding coil portion 8b is arranged so as to be shifted by 6 slot pitches in the circumferential first direction C1 side with respect to the first wave winding coil portion 8a. That is, the second wave winding coil portion 8b is composed of a plurality (40 pieces) of segment conductors 5 arranged in each slot 3 constituting the first slot group, like the first wave winding coil portion 8a. And in each slot 3 which comprises a 1st slot group, the conductor side part 31 of the segment conductor 5 which comprises the 1st wave winding coil part 8a, and the conductor side of the segment conductor 5 which comprises the 2nd wave winding coil part 8b The portions 31 are alternately arranged in the radial direction R, and are arranged so that the order of the radial direction R is switched between the slots 3 adjacent in the circumferential direction C constituting the first slot group.

  As shown in FIG. 8B, the first end portion 81 of the second wave-wound coil portion 8b is in contrast to the first layer segment conductor 5a provided with the first end portion 81 of the first wave-winding coil portion 8a. The first layer segment conductor 5a having a positional relationship shifted by 6 slot pitches in the circumferential first direction C1, that is, the first layer segment having the identification number “40” disposed in the slot 3 having the slot number “20”. It is provided on the protruding portion 7 of the conductor 5a. The second end 82 of the second wave-wound coil portion 8b is closer to the first circumferential direction C1 side than the tenth layer segment conductor 5j provided with the second end 82 of the first wave-wound coil portion 8a. The tenth layer segment conductor 5j having a positional relationship shifted by 6 slot pitches, that is, provided in the protruding portion 7 of the tenth layer segment conductor 5j having the identification number “21” disposed in the slot 3 having the slot number “14”. It has been. The first end 81 of the second wave winding coil portion 8b is an end portion 93 between the first wave winding coil set 9a, and an end portion 93 (third wave winding coil) of the second wave winding coil set 9b. The first end portion 81) of the portion 8c is joined.

  Then, the first wave winding coil portion 8a and the second wave winding coil portion 8 which are two wave winding coil portions 8 arranged so as to be shifted from each other in the circumferential direction C (specifically, shifted by 6 slot pitches corresponding to one magnetic pole pitch). The first wave winding coil set 9a is formed by joining the second end portions 82 to each other using the wave winding coil portion 8b. Here, as shown in FIGS. 1 and 8, in the connecting portion between the first wave winding coil portion 8 a and the second wave winding coil portion 8 b, each of the pair of protrusions 7 to be joined is the same layer ( In this example, the projecting portion 7 is provided with the conductor side portion 31 of the extension source disposed on the tenth layer). Moreover, in the said connection part, the direction of the circumferential direction C of the path | route of the electric current between a power line and a neutral point reverses. That is, in the first wave winding coil portion 8a, the direction of the circumferential direction C when the current path between the power line and the neutral point is from the power line side to the neutral point side is the circumferential first direction C1. On the other hand, in the second wave-wound coil portion 8b, a current path is formed so that the direction is the second circumferential direction C2.

  In view of the above, the protruding portion 7 provided with the second end portion 82 of one of the wave winding coil portions 8 constituting the wave winding coil set 9 is a deformed protruding portion 72. That is, the segment conductor 5 provided with the second end portion 82 of one of the wave winding coil portions 8 constituting the wave winding coil set 9 is a deformed segment conductor 52. In this example, the wave winding coil portion 8 located on the first circumferential direction C1 side of the first wave winding coil portion 8a and the second wave winding coil portion 8b, that is, the second of the second wave winding coil portion 8b. The protruding portion 7 provided with the end portion 82 is a deformed protruding portion 72. In other words, in the second wave-wound coil portion 8b, the segment conductor 5 provided with the second end portion 82 is the deformed segment conductor 52.

  In this way, the protruding portion 7 provided with the second end portion 82 of one of the wave winding coil portions 8 constituting the wave winding coil set 9 is formed as a deformed protruding portion 72 including the second radial direction bent portion 14. In addition, it is possible to connect the wave winding coil portions 8 to each other in a form in which the enlargement of the coil end portion in the axial direction L is suppressed while avoiding interference between the segment conductors 5 (joining the second end portions 82 to each other). It has become. This point will be described with reference to FIG. FIG. 10 conceptually shows an arrangement state of the tenth layer segment conductors 5j arranged in each slot 3 as a development view in the circumferential direction C. FIG. In FIG. 10, the front side of the drawing is the radially inner direction R1, and the far side of the drawing is the radially outward direction R2.

  As shown in FIG. 10, in the tenth layer segment conductor 5j, except for the deformed segment conductor 52, the protruding portion 7 on the first axial direction L1 side extends from the extending conductor side portion 31 to the first circumferential direction C1 side. The projecting portion 7 on the side in the second axial direction L2 is formed so as to extend from the extending conductor side portion 31 toward the second circumferential direction C2. On the other hand, the deformed segment conductor 52 in which the conductor side portion 31 is arranged in the tenth layer is such that both of the pair of protruding portions 7 extend from the conductor side portion 31 of the extension source toward the second circumferential direction C2. Is formed.

  Therefore, the protruding portion 7 (the deformed protruding portion 72) on the first axial direction L1 side of the deformed segment conductor 52 in which the conductor side portion 31 is disposed in the tenth layer and the conductor side portion 31 in the tenth layer are usually provided. The segment conductor 51 is arranged so as to intersect with the projecting portion 7 (normal projecting portion 71) on the first axial direction L1 side of the segment conductor 51 when viewed in the radial direction R. In order to avoid interference at this time, the deformed projecting portion 72 has an offset region X in which the extending conductor side portion 31 is offset in the radial direction R1 side with respect to the normal projecting portion 71 disposed in the tenth layer. And is arranged so as to intersect the normal protrusion 71 when viewed in the radial direction R in the offset region X. In the present embodiment, the deformed protrusion 72 of the deformed segment conductor 52 in which the conductor side 31 is arranged on the tenth layer corresponds to the “first deformed protrusion” in the present invention, and the conductor side 31 is the tenth layer. The normal projecting portion 71 on the first axial direction L1 side of the normal segment conductor 51 arranged in the section corresponds to the “first normal projecting portion” in the present invention.

  In addition, as shown in FIG. 1, the joining portion 61 of the second end portions 82 included in the first wave-wound coil set 9 a is one wave constituting the first wave-wound coil set 9 a when viewed in the radial direction R. It arrange | positions in the position which overlaps with the junction part 61 of protrusion part 7 in the winding coil part 8 (this example 1st wave winding coil part 8a). Thereby, it can suppress that the position of the junction part 61 disperse | distributes to the circumferential direction C or the axial direction L, and it can aim at the simplification of a manufacturing process.

1-3-3. Configuration of Third Wave Coil Part and Fourth Wave Coil Part As shown in FIG. 9A, the third wave coil part 8c has a first end 81 between the sets of the second wave coil set 9b. Except for the fact that the segment conductor 5 provided with the first end portion 81 and the end portion 93 is an odd-shaped segment conductor 52, the configuration is the same as that of the first wave-wound coil portion 8a. The third wave-wound coil portion 8c is arranged so as to be shifted by one slot pitch on the second circumferential direction C2 side with respect to the first wave-winding coil portion 8a. That is, the third wave winding coil portion 8c is constituted by a plurality (40 pieces) of segment conductors 5 arranged in each slot 3 constituting the second slot group.

  Further, as shown in FIG. 9B, the fourth wave coil portion 8d has a neutral point where the first end 81 is joined to the connecting member 21 (see FIG. 7) for forming a neutral point. Except for the side end portion 92, the second wave winding coil portion 8b has the same configuration. The fourth wave winding coil portion 8d is arranged so as to be shifted by one slot pitch on the second circumferential direction C2 side with respect to the second wave winding coil portion 8b. That is, the fourth wave winding coil portion 8d is constituted by a plurality (40 pieces) of segment conductors 5 arranged in each slot 3 constituting the second slot group.

  In each slot 3 constituting the second slot group, the conductor side 31 of the segment conductor 5 constituting the third wave wound coil portion 8c and the conductor side 31 of the segment conductor 5 constituting the fourth wave wound coil portion 8d. Are alternately arranged in the radial direction R, and the order of the radial direction R is changed between the slots 3 adjacent to each other in the circumferential direction C constituting the second slot group.

  Then, the third wave winding coil portion 8c and the fourth wave winding coil portion 8c, which are two wave winding coil portions 8 arranged so as to be shifted from each other in the circumferential direction C (specifically, shifted by 6 slot pitches corresponding to one magnetic pole pitch). A second wave coil set 9b is formed by joining the second end portions 82 to each other using the wave coil portion 8d. And the wave winding coil part 8 located in the circumferential first direction C1 side in the 3rd wave winding coil part 8c and the 4th wave winding coil part 8d, ie, the 2nd end part of the 4th wave winding coil part 8d. The projecting portion 7 provided with 82 is a deformed projecting portion 72. In other words, in the fourth wave wound coil portion 8d, the segment conductor 5 provided with the second end portion 82 is the deformed segment conductor 52. The second wave winding coil set 9b is configured similarly to the first wave winding coil set 9a except for the type of the segment conductor 5 provided with the first end 81 and the type of the first end 81. Therefore, detailed description is omitted.

1-4. Configuration of Phase Coil Next, the configuration of the phase coil 4 according to the present embodiment will be described. The phase coil 41 includes two wave winding coil sets 9, specifically, the first wave winding coil set 9 a and the second wave winding coil set 9 b described above. As described above, both of the first wave winding coil set 9a and the second wave winding coil set 9b are arranged in such a manner that two waves arranged in the circumferential direction C are shifted from each other by one magnetic pole pitch (in this example, six slot pitches). The winding coil unit 8 is used. As shown in FIGS. 5, 6, 8, and 9, the first wave coil set 9 a and the second wave coil set 9 b are arranged so as to be shifted from each other in the circumferential direction C by one slot pitch. Yes. Specifically, the second wave winding coil set 9b is arranged so as to be shifted by one slot pitch on the second circumferential direction C2 side with respect to the first wave winding coil set 9a.

  And, one of the two wave winding coil portions 8 constituting the first wave winding coil set 9a and the one end portion 81 provided in one of the two wave winding coil portions 8 constituting the first wave winding coil set 9b are The first end 81 provided is joined to form a wave-winding coil set joint 61a. Specifically, the first end 81 of the second wave winding coil portion 8b constituting the first wave winding coil set 9a is set as an end portion 93 of the first wave winding coil set 9a, and the second wave winding. The first end portion 81 of the third wave winding coil portion 8c constituting the coil set 9b is set as an end portion 93 between the sets of the second wave winding coil set 9b, and the end portions 93 between the sets are joined to each other. A winding coil set joint 61a is formed.

  Thus, the first wave winding coil set 9a and the second wave winding coil set 9b are connected in series. At this time, as shown in FIG. 5, both the power line side end 91 that is the end of the phase coil 41 on the power line side and the neutral point side end 92 that is the end on the neutral point side are Since it is arranged at the end of the same side in the radial direction R (in this example, the radially outward direction R2 side), it has an advantageous configuration with respect to the wiring.

  Here, as shown in FIG. 5, FIG. 6, FIG. 8 (b), and FIG. 9 (a), a wave winding coil set that is a connecting portion between the first wave winding coil set 9a and the second wave winding coil set 9b. In the inter-joining portion 61a, each of the pair of projecting portions 7 to be joined becomes the projecting portion 7 in which the extending conductor side portion 31 is disposed on the same layer (in this example, the first layer). Moreover, in the said connection part, the direction of the circumferential direction C of the electric current path between a power line and a neutral point reverses.

  In view of the above, the protruding portion 7 provided with one first end portion 81 to be joined by the wave winding coil set joining portion 61 a is a deformed projecting portion 72. That is, the segment conductor 5 provided with one first end portion 81 joined by the wave winding coil set joining portion 61 a is the deformed segment conductor 52. In this example, the wave winding coil set 9 positioned on the second circumferential direction C2 side in the first wave winding coil set 9a and the second wave winding coil set 9b, that is, one of the second wave winding coil set 9b. The protruding portion 7 provided with the first end portion 81 is a deformed protruding portion 72. In other words, in the second wave winding coil set 9b, one of the two segment conductors 5 provided with the first end portion 81 is the deformed segment conductor 52.

  In this way, the projecting portion 7 provided with one first end portion 81 joined by the joint portion 61a between the wave winding coil sets is used as the deformed projecting portion 72, thereby avoiding the interference between the segment conductors 5 and the wave winding. The coil sets 9 can be connected to each other. This point will be described with reference to FIG. FIG. 11 conceptually shows an arrangement state of the first layer segment conductors 5 a arranged in each slot 3 as a development view in the circumferential direction C. In FIG. 11, the front side of the paper surface is the radially inward direction R1 side, and the back surface of the paper surface is the radially outward direction R2 side.

  As shown in FIG. 11, the first layer segment conductor 5a has the protruding portion 7 on the first axial direction L1 side from the extending conductor side 31 to the second circumferential direction C2 side except for the deformed segment conductor 52. The projecting portion 7 on the second axial direction L2 side is formed so as to extend from the extending conductor side portion 31 toward the first circumferential direction C1. On the other hand, the odd-shaped segment conductor 52 in which the conductor side portion 31 is arranged in the first layer is such that both of the pair of protruding portions 7 extend from the extending conductor side portion 31 toward the circumferential first direction C1. Is formed.

  Therefore, the projecting portion 7 (deformed projecting portion 72) on the first axial direction L1 side of the deformed segment conductor 52 in which the conductor side portion 31 is disposed in the first layer, and the conductor side portion 31 is generally disposed in the first layer. The segment conductor 51 is arranged so as to intersect with the projecting portion 7 (normal projecting portion 71) on the first axial direction L1 side of the segment conductor 51 when viewed in the radial direction R. In order to avoid interference at this time, the deformed projecting portion 72 has an offset region X in which the extending conductor side portion 31 is offset in the radially outward direction R2 side with respect to the normal projecting portion 71 disposed in the first layer. And is arranged so as to intersect the normal protrusion 71 when viewed in the radial direction R in the offset region X. In addition, since the irregular protrusion 72 is joined to the normal protrusion 71 that extends from the conductor side 31 that is separated by 7 slots in the circumferential direction C with respect to the original conductor side 31, the irregular protrusion 72 is joined. The length of the protruding portion 72 in the circumferential direction C is set to about 4 slot pitches longer by 1 slot pitch than the length of the other protruding portions 7 in the circumferential direction C (about 3 slot pitches). In this embodiment, the deformed projecting portion 72 of the deformed segment conductor 52 in which the conductor side portion 31 is disposed in the first layer corresponds to the “second deformed projecting portion” in the present invention, and the conductor side portion 31 is the first layer. The normal projecting portion 71 on the first axial direction L1 side of the normal segment conductor 51 arranged in the section corresponds to the “second normal projecting portion” in the present invention.

  As described above, in the present embodiment, the phase coil 41 includes the protruding portion 7 provided with the second end portion 82 of the second wave winding coil portion 8b and the second end portion 82 of the fourth wave winding coil portion 8d. The protruding portion 7 provided and the protruding portion 7 provided with the first end portion 81 of the third wave-wound coil portion 8 c are formed as the deformed protruding portions 72. And in the arrangement | positioning location of the unusual shape protrusion part 72, a coil end part becomes large in the radial direction R by the part | minute of the offset amount of the offset area | region X. FIG. In this regard, as shown in FIGS. 5 and 6, in the present embodiment, all the three deformed protrusions 72 are disposed on the first axial direction L <b> 1 side with respect to the stator core 2.

  And about all the three phase coils 41 with which the coil 4 is provided, the three irregular projection part 72 with which each is provided is arrange | positioned with respect to the stator core 2 at the axial first direction L1 side. Thereby, the enlargement of the coil end portion in the radial direction R due to the disposition of the deformed projecting portion 72 is made only on one side of the axial direction L with respect to the stator core 2 (in this example, the first axial direction L1 side). be able to. Therefore, when the rotor (not shown) is arranged on the inner radial direction R1 side of the stator core 2, the rotor is inserted into the stator core 2 from the other side in the axial direction L (in this example, the second axial direction L2 side). With this configuration, the rotor can be appropriately arranged on the inner radial direction R1 side of the stator core 2 while preventing interference between the rotor and the stator 1.

  In the present embodiment, the first wave winding coil set 9a and the second wave winding coil set 9b are connected in series. And as for both the 1st wave winding coil part 8a and the 2nd wave winding coil part 8b which comprise the 1st wave winding coil set 9a, the conductor side part 31 is arrange | positioned at the 1st slot group. Further, in both the third wave winding coil portion 8c and the fourth wave winding coil portion 8d constituting the second wave winding coil set 9b, the conductor side portions 31 are arranged in the second slot group. That is, for each of the two wave winding coil sets 9 connected in series with each other, the conductor side portion 31 constituting the wave winding coil set 9 is included in the adjacent slot set of the same phase that repeatedly appears along the circumferential direction C. Arranged in one slot 3. In other words, the current flowing through the wave winding coil set 9 is repeated along the circumferential direction C when reciprocating in the radial direction R in the slot 3 from one first end 81 to the other first end 81. It flows in one slot 3 included in the adjacent in-phase adjacent slot set. Thereby, it is possible to reduce the potential difference between the conductor side portions 31 arranged adjacent to each other in the same slot 3 and to suppress a short circuit between the segment conductors 5 constituting the in-phase coil.

  Furthermore, in the present embodiment, since the entire phase coil 41 is composed of the normal segment conductor 51 and the deformed segment conductor 52 described above, when the stator 1 is manufactured, the bending portion (the first circumferential direction bending portion 11, The segment conductor 5 in which the two-circumferential bending portion 12, the first radial bending portion 13, and the second radial bending portion 14) are formed can be inserted into the slot 3 from the radial inner side R1 side. In such a configuration, since it is not necessary to perform a process such as bending the segment conductor 5 after insertion into the slot 3, the insulating film covering the segment conductor 5 is not damaged by such a process. Further, since it is not necessary to deform the segment conductor 5 when the segment conductor 5 is inserted into the slot 3, the insulating film covering the segment conductor 5 is not damaged when inserted into the slot 3. Therefore, even when a process of fixing the insulating coating material to the projecting portion 7 of the segment conductor 5 by powder coating or the like is performed, such a process can be executed before the segment conductor 5 is inserted into the slot 3. Further, it is not always necessary to insert the segment conductors 5 constituting each layer into the slot 3 at a time for each layer, and the segment conductors 5 can be inserted into the slot 3 one by one. As described above, the stator 1 according to the present embodiment is advantageous in terms of manufacturability.

2. Second Embodiment Next, a second embodiment of the armature for a rotating electrical machine according to the present invention will be described with reference to the drawings (FIGS. 12 to 16). The armature for a rotating electrical machine according to this embodiment is the stator 1 of an inner rotor type rotating electrical machine, as in the first embodiment, and the phase coil 41 is shifted in the circumferential direction C as shown in FIG. And two wave winding coil sets 9 (first wave winding coil set 9a and second wave winding coil set 9b). However, the stator 1 according to the present embodiment is different from the first embodiment in that the first wave winding coil set 9a and the second wave winding coil set 9b constituting the phase coil 41 are connected in parallel to each other. Is different. Hereinafter, the configuration of the stator 1 according to the present embodiment will be described focusing on differences from the first embodiment. Note that points not particularly described are the same as those in the first embodiment. FIGS. 12, 13, 14, 15, and 16 correspond to FIGS. 1, 4, 5, 8, and 9, respectively, according to the first embodiment.

  Also in this example, the phase coil 41 includes two wave winding coil sets 9, that is, a first wave winding coil set 9a and a second wave winding coil set 9b, as shown in FIG. The first wave winding coil set 9a and the second wave winding coil set 9b are classified into a type of the first end 81 on the circumferential first direction C1 side and a type of the first end 81 on the circumferential second direction side. The configuration is the same except that is replaced. Each wave-winding coil set 9 is configured using two wave-winding coil portions 8.

  As shown in FIGS. 13, 15, and 16, the wave winding coil portion 8 includes the protruding portions 7 of the pair of segment conductors 5 in which the conductor side portions 31 are disposed in mutually adjacent layers in different slots 3. The one side of the axial direction L and the other side of the axial direction L are alternately joined sequentially toward the circumferential first direction C1 side. As shown in FIG. 15 and FIG. 16, the phase coil 41 according to the present embodiment has a first wave winding coil portion 8 a and a second wave winding coil constituting the first wave winding coil set 9 a as the wave winding coil portion 8. Part 8b, and a third wave winding coil part 8c and a fourth wave winding coil part 8d constituting the second wave winding coil set 9b. In the present embodiment, unlike the first embodiment, the counterclockwise direction when the stator 1 is viewed from the axial first direction L1 side is the “circumferential first direction C1”, and the stator 1 is The clockwise direction when viewed from the first direction L1 side is the “second circumferential direction C2”. In the present embodiment, the coil 4 has a six-layer winding structure.

  As shown in FIGS. 13 and 15, the first wave winding coil portion 8 a has a first end portion 81 as a power line side end portion 91. The second wave-wound coil portion 8b has a first end portion 81 as a neutral point side end portion 92 and a segment conductor 5 provided with a second end portion 82 as a deformed segment conductor 52. Yes. The second wave-wound coil portion 8b is arranged so as to be shifted from the first wave-wound coil portion 8a by a 7-slot pitch on the circumferential first direction C1 side. That is, in the present example, the second wave-wound coil portion 8b is constituted by a plurality (24 in this example) of segment conductors 5 arranged in each slot 3 constituting the first slot group. The first wave winding coil portion 8a is constituted by a plurality (24 pieces) of segment conductors 5 arranged in each slot 3 constituting the second slot group. And the conductor side part 31 of the segment conductor 5 which comprises the 1st wave winding coil part 8a, and the conductor side part 31 of the segment conductor 5 which comprises the 2nd wave winding coil part 8b are 2 adjacent to the circumferential direction C. Divided into two slots 3 and arranged alternately in the radial direction R.

  And the first wave winding coil part 8a which is the two wave winding coil parts 8 arranged so as to be shifted from each other in the circumferential direction C (specifically, shifted by the sum of one magnetic pole pitch and one slot pitch) The first wave winding coil set 9a is formed by joining the second end portions 82 to each other using the second wave winding coil portion 8b. Therefore, in this example, the conductor side part 31 which comprises the wave winding coil set 9 is comprised so that the two conductor side parts 31 adjacent to each other may appear along the circumferential direction C at 6 slot pitch.

  As shown in FIG. 16A, the third wave winding coil portion 8c is the same as the second wave winding coil portion 8b except that the first end portion 81 is a power line side end portion 91. It is configured. The third wave winding coil portion 8c is arranged so as to be shifted by 6 slot pitches in the circumferential second direction C2 side with respect to the second wave winding coil portion 8b.

  Further, as shown in FIG. 16 (b), the fourth wave winding coil portion 8d is the first wave winding coil portion 8a except that the first end portion 81 is a neutral point side end portion 92. It is configured in the same way. The fourth wave winding coil portion 8d is arranged with a 6-slot pitch shifted from the first wave winding coil portion 8a toward the second circumferential direction C2.

  Then, a third wave winding coil portion 8c, which is two wave winding coil portions 8 disposed so as to be shifted from each other in the circumferential direction C (specifically, shifted by the sum of one magnetic pole pitch and one slot pitch) A second wave winding coil set 9b is formed by joining the second end portions 82 to each other using the fourth wave winding coil portion 8d. As described above, the second wave winding coil set 9b has a point that the type of the first end 81 on the first circumferential direction C1 side and the type of the first end 81 on the second circumferential direction C2 side are interchanged. The configuration is the same except for the above.

  That is, as shown in FIGS. 14 and 15, the first wave-wound coil set 9 a has a first end portion 81 on the side in the first circumferential direction C <b> 1 of the two first end portions 81 and a neutral point side end portion. 92, and the first end portion 81 on the second circumferential direction C2 side is the power line side end portion 91. On the other hand, as shown in FIGS. 14 and 16, the second wave-wound coil set 9 b has the first end 81 on the side in the first circumferential direction C <b> 1 of the two first ends 81 and the power line side end 91. The first end portion 81 on the circumferential second direction C2 side is a neutral point side end portion 92. The first wave winding coil set 9a and the second wave winding coil set 9b are such that the power line side end portions 91 and the neutral point side end portions 92 are electrically connected via a connecting member (not shown). Are connected to each other in parallel.

  As described above, in the present embodiment, the first wave winding coil set 9a and the second wave winding coil set 9b are connected in parallel to each other. And both the 1st wave winding coil set 9a and the 2nd wave winding coil set 9b have the conductor side part 31 of one wave winding coil part 8 arrange | positioned in a 1st slot group, and the other wave winding coil part Eight conductor side portions 31 are arranged in the second slot group. That is, for each of the two wave winding coil sets 9 connected in parallel to each other, the conductor side portion 31 constituting the wave winding coil set 9 repeatedly appears along the circumferential direction C in the two adjacent slot sets of the same phase. The two wave winding coil sets 9 are arranged in the same slot 3 while being divided into two slots 3. Thereby, the distance with the permanent magnet and electromagnet arrange | positioned at a rotor can be equalize | homogenized, and it can suppress that a difference arises in an impedance between the two wave winding coil sets 9, As a result, circulating current can be suppressed. It is possible.

3. Other Embodiments Finally, other embodiments according to the present invention will be described. Note that the features disclosed in each of the following embodiments can be used only in that embodiment, and can be applied to other embodiments as long as no contradiction arises.

(1) In the first embodiment described above, each of the wave winding coil sets 9 is constituted by two wave winding coil portions 8 arranged so as to be shifted from each other in the circumferential direction C by one magnetic pole pitch (6 slot pitch). The case has been described as an example. However, the embodiment of the present invention is not limited to this, and in the first embodiment described above, each of the wave winding coil sets 9 is obtained by adding one magnetic pole pitch and one slot pitch to each other in the circumferential direction C. It can also be constituted by two wave winding coil portions 8 arranged so as to be shifted by the difference. Further, in the second embodiment, each of the wave winding coil sets 9 is constituted by two wave winding coil portions 8 arranged so as to be shifted from each other in the circumferential direction C by the sum of one magnetic pole pitch and one slot pitch. The case where it is configured has been described as an example. However, the embodiment of the present invention is not limited to this. In the second embodiment, each of the wave winding coil sets 9 is shifted by one magnetic pole pitch (6 slot pitch) in the circumferential direction C. Or two wave winding coils arranged with a difference of one magnetic pole pitch and one slot pitch (5 slot pitch) from each other in the circumferential direction C. It can also be configured by the section 8.

(2) In each of the above embodiments, the configuration in which both of the pair of protrusions 7 to be joined are provided with the first radial bending portion 13 has been described as an example. However, the embodiment of the present invention is not limited to this, and only one of the pair of protrusions 7 to be joined may include the first radial bent portion 13. In this case, it is preferable to set the offset amount of the first radial direction bent portion 13 to the thickness (one layer) of the linear conductor in the radial direction R. In addition, both of the pair of protrusions 7 to be bonded do not include the first radial bending portion 13, and the pair of protrusions 7 are formed so that the bonding surfaces formed at the respective distal end portions are in the radial direction R. It is also one of the preferred embodiments of the present invention to have a configuration in which they are joined to face each other.

(3) In each of the above embodiments, the configuration in which both of the pair of projecting portions 7 included in the segment conductor 5 include the first circumferential direction bent portion 11 and the second circumferential direction bent portion 12 has been described as an example. However, the embodiment of the present invention is not limited to this, and only one of the pair of projecting portions 7 included in the segment conductor 5 includes the first circumferential direction bent portion 11 and the second circumferential direction bent portion 12, The other protruding portion 7 may be formed at the same position in the circumferential direction C as the conductor side portion 31. In this case, the other protrusion 7 can be formed in a straight line arranged on the extension line of the conductor side part 31, that is, in the same straight line as the conductor side part 31, or with respect to the conductor side part 31. It can be formed in a straight line extending in the axial direction L at a position offset in the radial direction R. In such a configuration, the protruding portions 7 on both sides in the axial direction L of the odd-shaped segment conductor 52 may be linearly extending in parallel to the axial direction L in some cases. Even in this case, the projecting portions 7 on both sides do not extend in the circumferential direction C, and the projecting portions 7 on both sides have the same extending direction with respect to the circumferential direction C.

(4) In each of the above embodiments, one of the wave winding coils constituting the wave winding coil set 9 when the joining portion 61 of the second end portions 82 provided in the wave winding coil set 9 is viewed in the radial direction R. The structure arrange | positioned in the position which overlaps with the junction part 61 of the protrusion parts 7 in the part 8 was demonstrated as an example. However, the embodiment of the present invention is not limited to this, and the wave winding coil portion 8 that constitutes the wave winding coil set 9 includes a joining portion 61 between the second end portions 82 of the wave winding coil set 9. It is also possible to adopt a configuration in which they are displaced in the circumferential direction C or the axial direction L with respect to the joint 61 between the protrusions 7 inside.

(5) In each of the embodiments described above, as an example, a configuration in which all the deformed protrusions 72 included in the coil 4 are arranged on one side (the first axial direction L1 side) in the axial direction L with respect to the stator core 2 is taken as an example. explained. However, the embodiment of the present invention is not limited to this, and when the coil 4 includes a plurality of deformed protrusions 72, the plurality of deformed protrusions 72 are separated on both sides in the axial direction L with respect to the stator core 2. Can be configured.

(6) In each of the above embodiments, the configuration in which the inner radial direction R1 and the outer radial direction R2 correspond to the “diameter second direction” and the “diameter first direction” in the present invention has been described as an example. However, the embodiment of the present invention is not limited to this, and the configuration in which the radial direction R1 and the radial direction R2 are interchanged in each of the above embodiments, that is, the radial direction R1 and the radial direction R2 are different. These can also be configured to correspond to the “diameter first direction” and the “diameter second direction” in the present invention, respectively. In such a configuration, the conductor side portion 31 is disposed in any layer from the first layer to the N-th layer set in order from the radially inner direction R1 side toward the radially outer direction R2 side in the slot 3. Both the power line side end portion 91 and the neutral point side end portion 92 of the phase coil 41 are arranged at the end portion on the radial inward direction R1 side.

(7) In each of the above embodiments, the configuration in which the shape of the cross section perpendicular to the extending direction of the linear conductors constituting the segment conductor 5 is rectangular has been described as an example. However, the embodiment of the present invention is not limited to this, and the cross-sectional shape of the linear conductor may be a circular shape, an elliptical shape, a polygonal shape other than a rectangular shape, or the like.

(8) In each of the above embodiments, the case where the armature for a rotating electrical machine according to the present invention is applied to a stator for an inner rotor type rotating electrical machine has been described as an example. However, the embodiment is applied to a stator for an outer rotor type rotating electrical machine. You can also Moreover, the armature for a rotating electrical machine according to the present invention can be applied to a rotor for a fixed field type rotating electrical machine.

(9) Regarding other configurations as well, the embodiments disclosed herein are illustrative in all respects, and embodiments of the present invention are not limited thereto. That is, as long as the configuration described in the claims of the present application and a configuration equivalent thereto are provided, a configuration obtained by appropriately modifying a part of the configuration not described in the claims is naturally also included in the present invention. Belongs to the technical scope.

  The present invention includes an armature core in which a plurality of slots extending in the axial direction of a cylindrical core reference surface are distributed in the circumferential direction of the core reference surface, and a coil wound around the armature core. It can utilize suitably for the armature for rotary electric machines.

1: Stator (armature for rotating electrical machine)
2: Stator core (armature core)
3: Slot 4: Coil 5: Segment conductor 7: Protruding portion 9: Wave winding coil set 13: First radial direction bent portion (offset bent portion)
31: Conductor side 41: Phase coil 51: Normal segment conductor 52: Deformed segment conductor 60: Joining surface 61: Joining part 61a: Joining part between wave coil sets 71: Normal projecting part 72: Deformed projecting part 8: Wave winding Coil portion 81: first end portion 82: second end portion X: offset region S: core reference plane L: axial direction L2: axial second direction C: circumferential direction C1: circumferential first direction C2: circumferential second direction R : Radial direction R1: Inward direction (diameter second direction)
R2: Outer diameter direction (first diameter direction)

Claims (8)

A rotating electrical machine comprising: an armature core in which a plurality of slots extending in the axial direction of a cylindrical core reference surface are arranged in a distributed manner in the circumferential direction of the core reference surface; and a coil wound around the armature core Armature,
The coil is configured by using a plurality of segment conductors including a conductor side portion disposed in the slot and a pair of projecting portions extending from the conductor side portion and projecting from the armature core to both sides in the axial direction. ,
In the slot, the conductor side portions are arranged in order from a first layer set in order from a first radial direction side that is one radial side of the core reference surface to a second radial direction side that is the other radial side. Arranged in any layer up to N layers (N is an even number of 2 or more),
The coil is configured so that the protruding portions of the pair of segment conductors in which the conductor side portions are arranged in mutually adjacent layers in different slots are arranged in a circumferential first direction side that is one circumferential side of the core reference surface. A plurality of wave-wound coil portions that are alternately joined sequentially on one side in the axial direction and the other side in the axial direction toward the
The wave winding coil portion is provided at the projecting portion of the segment conductor in which the first end portion which is one end portion is disposed on the first layer and the conductor side portion is disposed, and the second end which is the other end portion. A portion is provided in the projecting portion of the segment conductor in which the conductor side portion is arranged in the Nth layer,
The second end portions of the two wave winding coil portions arranged to be shifted from each other in the circumferential direction of the core reference surface are joined together to form a wave winding coil set,
The protruding portion provided with the second end of one of the wave winding coil portions constituting the wave winding coil set is a deformed protruding portion,
The deformed projecting portion has the same extending direction as the other projecting portion of the deformed segment conductor, which is the segment conductor provided with the deformed projecting portion, in the circumferential direction of the core reference surface, and the conductor on the Nth layer. An offset region that is offset in the second radial direction side with respect to the normal projecting portion that is the projecting portion of the normal segment conductor that is the segment conductor that has a side portion and is not provided with the deformed projecting portion. An armature for a rotating electrical machine disposed so as to intersect with the normal protrusion when viewed in the radial direction of the core reference surface in the offset region. In the normal segment conductor, the protruding portion on the first end portion side of the pair of protruding portions is extended from the conductor side portion of the extension source to the circumferential second direction side opposite to the circumferential first direction. The projecting part on the second end side of the pair of projecting parts is formed so as to extend from the conductor side part of the extension source toward the circumferential first direction side. ,
2. The electric machine for a rotating electrical machine according to claim 1, wherein the deformed segment conductor is formed such that both of the pair of projecting portions extend from the conductor side portion of the extension source toward the second circumferential direction. Child. The side on which the deformed protrusion is disposed with respect to the armature core in the axial direction of the core reference surface is the first axis direction, and the opposite side of the first axis direction is the second axis direction.
In the normal segment conductor in which the conductor side portion is arranged in an odd-numbered layer, the protruding portion on the first axial direction side extends from the conductor side portion of the extension source toward the second circumferential direction side. And the protruding portion on the second axial direction side is formed so as to extend from the conductor side portion of the extension source toward the first circumferential direction side,
In the normal segment conductor in which the conductor side portion is arranged in the even-numbered layer, the protruding portion on the first axial direction side extends from the conductor side portion of the extension source toward the circumferential first direction side. The projecting portion on the second axial direction side is formed so as to extend from the conductor side portion of the extension source toward the circumferential second direction side. Armature for rotating electrical machines.   The joint between the second ends of the wave winding coil set is formed between the protrusions in one of the wave winding coil parts constituting the wave winding coil set when viewed in the radial direction of the core reference surface. The armature for rotary electric machines as described in any one of Claim 1 to 3 arrange | positioned in the position which overlaps with a junction part.   At least one of the pair of projections to be joined includes an offset bent portion for offsetting the tip on the side approaching the other projection in the radial direction of the core reference surface, and the pair of projections 5. The armature for a rotating electrical machine according to claim 1, wherein the joining surfaces formed at the respective tip portions are joined to each other so as to face each other in the circumferential direction of the core reference surface. The coil includes a plurality of the deformed protrusions,
The armature for a rotating electrical machine according to any one of claims 1 to 5, wherein all the deformed protrusions are disposed on the same side in the axial direction of the core reference plane with respect to the armature core. The deformed protrusion is a first deformed protrusion, and the normal protrusion is a first normal protrusion;
The coil includes a phase coil corresponding to each of the first phase, the second phase, and the third phase,
The armature core includes two adjacent slots for the first phase, two adjacent slots for the second phase, and two adjacent slots for the third phase. Are arranged so that they appear repeatedly along the circumferential direction in the order of description,
Each phase coil comprises two said wave winding coil sets,
Each of the two wave winding coil sets is composed of the two wave winding coil portions arranged so as to be shifted from each other by one magnetic pole pitch in the circumferential direction of the core reference plane, and one of the wave winding coil sets. The first end portions of the wave winding coil portion are joined together to form a wave winding coil set joint portion,
The protruding portion provided with one of the first end portions joined at the joint portion between the wave winding coil sets is a second deformed protruding portion,
The second deformed projecting portion has the same extending direction as the other projecting portion of the segment conductor provided with the second deformed projecting portion and the circumferential direction of the core reference surface, and the conductor side on the first layer. A second normal projecting portion that is the projecting portion of the segment conductor that is not provided with the second deformed projecting portion and has an offset region that is offset toward the first radial direction side, The armature for a rotating electrical machine according to any one of claims 1 to 6, wherein the armature for a rotating electrical machine is disposed so as to intersect the second normal protrusion when viewed in a radial direction of the core reference surface in an offset region. The coil includes a phase coil corresponding to each of the first phase, the second phase, and the third phase,
The armature core includes two adjacent slots for the first phase, two adjacent slots for the second phase, and two adjacent slots for the third phase. Are arranged so that they appear repeatedly along the circumferential direction in the order of description,
Each phase coil comprises two said wave winding coil sets,
Each of the two wave winding coil sets is constituted by two wave winding coil portions arranged so as to be shifted from each other by the sum or difference of one magnetic pole pitch and one slot pitch in the circumferential direction of the core reference plane. And
The armature for a rotating electrical machine according to any one of claims 1 to 6, wherein the two wave winding coil sets are connected in parallel to each other.

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