JP2013176184A - Armature for rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armature for a rotary electric machine, capable of suppressing an increase in overall length of a coil and an increase in size of the whole armature when a coil end portion is bound with a binding member.SOLUTION: A coil 20 includes a plurality of concentric winding portions formed by winding a wire a plurality of times between a pair of slots, and a plurality of transition portions 60 connecting conductor side portions of the pair of concentric winding portions to each other axially outside an armature core. A first transition portion 61 as a portion among the plurality of transition portions 60 connects between a pair of conductor side portions arranged in innermost layers in different slots, and a second transition portion 62 as another portion connects between a pair of conductor side portions arranged in outermost layers in the different slots. The first transition portion 61 and second transition portion 62 are bound with each other by a binding member 90 extending so that a direction connecting the first transition portion 61 and second transition portion 62 from the first transition portion 61 toward the second transition portion 62 has a component directed toward the outside of a radial direction R.

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 arranged in a distributed manner in the circumferential direction of the core reference surface, and a conductor side portion arranged in the slot. The present invention relates to an armature for a rotating electrical machine including a coil wound around a child core.

  As a conventional technique of the armature for a rotating electric machine as described above, for example, there is a technique described in Japanese Patent Laid-Open No. 2008-295162 (Patent Document 1). Patent Document 1 describes a configuration in which a coil end portion protruding in an axial direction from an armature core is bound by a binding member and the coil end portion is fixed. At this time, the bundling member is sequentially passed through a gap formed between the coil end portion and the armature core (racing string insertion portion 12 in Patent Document 1) so that the entire coil end portion is sewn in a mesh shape. Placed in.

  However, in the configuration described in Patent Document 1, it is necessary to provide a gap between the coil end portion and the armature core for passing the binding member and the member that holds the binding member (the racing needle 4 in Patent Document 1). . For this reason, in the configuration of Patent Document 1, the entire length of the coil is increased by the gap, and the overall dimensions of the armature may be increased.

JP 2008-295162 A (paragraph 0031 etc.)

  Therefore, it is desired to realize an armature for a rotating electrical machine that can suppress an increase in the overall length of the coil and an increase in the size of the entire armature when the coil end portion is bound by a binding member.

  According to the present invention, there is provided 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 conductor side portion arranged in the slot. And a coil wound around the armature core, wherein the coil has a plurality of conductor side portions arranged in each of the pair of slots. A plurality of concentric winding portions that are wound a plurality of times between the slots, and a plurality of bridging portions that connect the conductor side portions of the pair of concentric winding portions on the outer side in the axial direction of the armature core. A first transition part that is a part of the plurality of transition parts connects a pair of the conductor side parts arranged in the innermost layer that is the innermost layer in the radial direction in different slots, In another part of the plurality of transition parts The second crossover portion connects a pair of the conductor side portions disposed in the outermost layer, which is the outermost radial layer in the different slots, and extends from the first crossover portion toward the second crossover portion. The first transition portion and the second transition portion are bound to each other by a binding member that extends so that the direction connecting the first transition portion and the second transition portion has a component toward the outside in the radial direction. There is in point.

  According to the above characteristic configuration, the member to be bound by the binding member is disposed in the outermost layer in the different slot and the first bridging portion that connects the pair of conductor side portions disposed in the innermost layer in different slots. It becomes the 2nd crossover part which connects a pair of conductor side parts. At this time, the binding member extends so that the direction connecting the first transition portion and the second transition portion from the first transition portion toward the second transition portion has a component toward the outside in the radial direction. By binding the part and the second transition part, the movement of the part located between the transition parts in the coil end part can be restricted mainly in the radial direction. Accordingly, the coil end portion can be appropriately bound without passing the binding member through the gap between the coil end portion and the armature core, and the binding member is inserted into the gap between the coil end portion and the armature core. Compared with the case of passing through, an increase in the total length of the coil and an increase in the size of the entire armature can be suppressed.

  Here, a plurality of the first crossing portions and the second crossing portions are respectively arranged in the circumferential direction, and the binding member is alternately wound around the first crossing portion and the second crossing portion. It is preferable that the configuration is hung.

  According to this configuration, since the plurality of first crossover portions and the second crossover portions are respectively distributed in the circumferential direction, the coil end portions can be appropriately bound in a wide range in the circumferential direction. In addition, since the binding member is alternately wound around the first transition portion and the second transition portion, it is possible to generate tension on the binding member that causes the first transition portion and the second transition portion to approach each other in the radial direction. It becomes easy. And when generating such tension | tensile_strength in a binding member, the movement of the radial direction mainly of the part located between the 1st crossover part in a coil end part and a 2nd crossover part is controlled effectively. be able to.

  Further, the continuous conductor pieces K (K represents a natural number) constitute a concentric winding set, and the conductor sides arranged at one end along the direction of current flowing through the coil in the concentric winding set The first conductor side part, the conductor side part disposed at the other end is the second conductor side part, and the coil has a first concentric winding part and a second winding part whose winding directions are opposite to each other. The coil is configured by alternately connecting a first concentric winding set constituted by the first concentric winding portion and a second concentric winding set constituted by the second concentric winding portion. The first conductor side part of the first concentric winding set and the second conductor side part of the second concentric winding set are arranged in the innermost layer and connected to each other by the first transition part, The second conductor side part of the first concentric winding set and the second conductor side part of the second concentric winding set And the conductor side portion, wherein it is preferable to the configuration are connected to each other by the second transfer section while being arranged in the outermost layer.

  According to this configuration, the first bridging portion that connects the pair of conductor sides arranged in the innermost layer in different slots is provided, and the pair of conductor sides arranged in the outermost layer in different slots A coil provided with the 2nd crossing part to connect can be realized appropriately.

  In the configuration in which the coil is configured by alternately connecting the first concentric winding set and the second concentric winding set as described above, the first conductor side portion of the first concentric winding set is the innermost layer. The first conductor side part of the second concentric winding set is arranged on the outermost layer of the slot arranged in the slot, and the second conductor side part of the first concentric winding set is arranged on the outermost layer. It is preferable that the second conductor side part of the second concentric winding set is arranged in the innermost layer of the slot.

  According to this structure, since the 1st crossover part and the 2nd crossover part can be arrange | positioned in the position of the same circumferential direction, the part located between the 1st crossover part and the 2nd crossover part in a coil end part It is easy to restrict the movement in the radial direction of both the radially inner side and the radially outer side.

  In the configuration in which the coil is configured by alternately connecting the first concentric winding set and the second concentric winding set as described above, L consecutive Ls (L represents an even number of 2 or more). A winding part constitutes the concentric winding set, and the concentric winding part is formed so as to circulate in a spiral shape when viewed in the circumferential direction, and each of the concentric winding sets has a direction of the spiral vortex. Each of the concentric winding sets, in each of the concentric winding sets, the conductor side portion disposed at the center of the spiral of the positive direction concentric winding portion, The central part of the spiral of the reverse concentric winding part provided in the first concentric winding set is connected to the conductor side part arranged at the central part of the spiral of the reverse concentric winding part via the crossing part. The conductor side part disposed on the opposite side of the second side The conductor side portions arranged on the opposite side of the spiral center portion of the reverse concentric winding portion included in the winding set are connected to each other by the first crossover portion, and the positive concentric winding set includes The conductor side portion disposed on the opposite side to the spiral central portion of the direction concentric winding portion and the spiral central portion of the positive direction concentric winding portion included in the second concentric winding set is disposed on the opposite side. It is preferable that the conductor side portions are connected to each other by the second crossing portion.

  According to this configuration, when the number of slots per pole per phase is an even number, the first crossing portion that connects the pair of conductor side portions arranged in the innermost layer in different slots is provided and is different. A coil provided with the 2nd crossing part which connects a pair of conductor side parts arranged in the outermost layer in a slot can be realized appropriately. At this time, since the concentric winding portion is formed so as to circulate in a spiral shape when viewed in the circumferential direction, the coil manufacturing process can be simplified when the coil is formed by circulating one linear conductor. Can be planned.

  In the armature for a rotating electric machine having each configuration described above, the coil includes a phase coil corresponding to each of a plurality of phases, and the first transition portion provided in each of the phase coils includes both sides in the circumferential direction. A plurality of the first transition portions of the other phases arranged in the circumferential direction and the circumferential positions are partially overlapped, and a plurality of the second phases are provided along each of the phase coils. When the crossover part is arranged in a plurality in the circumferential direction, with the second crossover part of the other phase arranged on both sides in the circumferential direction partially overlapping the circumferential position. Is preferred.

  According to this configuration, it becomes easy to appropriately bind the coil end portions in a wide range in the circumferential direction.

It is an axial view of a stator according to an embodiment of the present invention. It is II-II sectional drawing in FIG. It is a partial schematic diagram of the phase coil of the 1st manufacturing stage which concerns on embodiment of this invention. FIG. 3 is a partial arrangement view of a phase coil in a first manufacturing stage according to an embodiment of the present invention. It is a partial layout view of a phase coil in a second manufacturing stage according to an embodiment of the present invention. It is a partial layout view of a phase coil in a third manufacturing stage according to an embodiment of the present invention.

  An embodiment of an armature for a rotating electrical machine according to the present invention will be described with reference to the drawings. Here, the case where the armature for a rotating electrical machine according to the present invention is applied to the stator 1 (see FIGS. 1 and 2) of an inner rotor type rotating electrical machine will be described as an example. The rotating electric machine is a concept including any of a motor (electric motor), a generator (generator), and a motor / generator that functions as both a motor and a generator as necessary. 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 following description, unless otherwise specified, the “axial direction L”, “circumferential direction C”, and “radial direction R” are the axis A of the cylindrical core reference plane S (FIG. 1, (See FIG. 2). “Axis first direction L1” and “Axis second direction L2” respectively represent an upper direction and a lower direction along the axial direction L in FIG. The “circumferential first direction C1” and the “circular second direction C2” respectively represent a clockwise direction and a counterclockwise direction in the axial direction L viewed from the axial first direction L1 side (see FIG. 1). “Diameter first direction R1” and “Diameter second direction R2” respectively represent a direction toward the inside and a direction toward the outside of the diameter direction R of the core reference surface S. And about the coil 20 and each part which comprises the said coil 20, it has prescribed | regulated as the direction in the state by which the said coil 20 was wound by the stator core 2. FIG.

  In the following description, in order to facilitate understanding of the invention, each part constituting the coil 20 is a corresponding part in a state where the coil 20 is wound around the stator 1 as a finished product even in the description at the manufacturing stage. The same name (for example, the conductor side 30) is used for explanation. In the following description, terms (for example, “parallel”) relating to the direction and position of each member are used as a concept including a state having a difference due to an allowable error in manufacturing.

1. Overall Configuration of Stator The overall configuration of the stator 1 according to this embodiment will be described with reference to FIGS. 1 and 2. The stator 1 includes a stator core 2 and a coil 20 wound around the stator core 2. The stator core 2 is formed using a magnetic material. On the first radial direction R1 side (radial inner side) of the stator core 2, a rotor 5 (see FIG. 2, not shown in FIG. 1) as a magnetic field including a permanent magnet, an electromagnet, or the like is disposed. That is, in the present embodiment, the first radial direction R1 side (radial inner side) is the field side in the radial direction R, and the second radial direction R2 side (radial outer side) is the field in the radial direction R. The opposite side (the demagnetizing side).

  In the stator core 2, a plurality of slots 3 (see FIG. 6) extending in the axial direction L are distributed in the circumferential direction C. A tooth 4 is formed between two slots 3 adjacent to each other in the circumferential direction C. The above-described “cylindrical core reference surface S” is a virtual surface that serves as a reference for the arrangement and configuration of the slots 3, and in the present embodiment, a plurality of (the same number as the slots 3) diameter first directions of the teeth 4. A virtual cylindrical surface (core inner peripheral surface) including the end surface on the R1 side is used as a core reference surface S (see FIGS. 1 and 2). The surface on the radial second direction R2 side (core outer peripheral surface) of the stator core 2 may be the core reference surface S.

  The plurality of slots 3 are distributed at regular intervals along the circumferential direction C. Each slot 3 extends in the axial direction L and is formed to extend radially from the axis A of the stator core 2 in the radial direction R. Each slot 3 has the same shape as each other, and is formed in a groove shape extending in the axial direction L and the radial direction R and having a width in the circumferential direction C corresponding to the line width of the coil 20. Each slot 3 is opened on the radial first direction R1 side (opened on the inner peripheral surface of the core). The teeth 4 are respectively formed between two slots 3 adjacent to each other in the circumferential direction C, and a plurality of teeth 4 are distributed and arranged at regular intervals along the circumferential direction C. Each tooth 4 has the same shape as each other, and is formed in a thick plate shape extending in the axial direction L and the radial direction R and having a width in the circumferential direction C corresponding to the slot width and the slot pitch.

  In this embodiment, the rotating electrical machine is an AC motor driven by a multiphase AC (three-phase AC in this example). The coil 20 has a phase coil 21 corresponding to each of a plurality of phases (in this example, three phases of a U phase, a V phase, and a W phase). AC currents having different phases flow through each of the plurality of phase coils 21. In this embodiment, three phase coils 21 of a U-phase coil, a V-phase coil, and a W-phase coil are provided, and the stator core 2 is provided with slots 3 for U-phase, V-phase, and W-phase. It arrange | positions so that it may appear repeatedly along the direction C. In the present embodiment, the number of slots per pole per phase is “2”, and the stator core 2 is arranged so that two slots 3 for each phase repeatedly appear along the circumferential direction C. ing. That is, the phase coils 21 of the respective phases are arranged in a positional relationship shifted from each other by two slot pitches. In this embodiment, the number of magnetic poles per phase is “8”, and the stator core 2 is provided with a total of 48 (= 2 × 8 × 3) slots 3. That is, in this embodiment, one slot pitch corresponds to 7.5 degrees. Moreover, in this embodiment, the phase coil 21 of each phase is Y-connected (star connection), and the coil 20 is formed.

  As will be described in detail later, the coil 20 has a conductor side portion 30 disposed in the slot 3 as shown in FIG. 3, and has a crossover portion 60 and a turn portion 22 constituting a coil end portion. Yes. The coil end portion is a portion of the coil 20 that protrudes in the axial direction L from the stator core 2 in a state where the coil 20 is wound around the stator core 2. In each slot 3, the conductor side portions 30 are arranged in a plurality of layers. Here, “layer” represents the position in the radial direction R of the conductor side portion 30 in the slot 3. In the following, the outermost layer, which is the outermost radial second direction R2 side (radial outer side) layer in the slot 3, is referred to as a first layer, and then the second layer, the third layer in that order from the radial first direction R1 side. Layers, and so on.

  In the present embodiment, as shown in FIG. 6, the conductor side portions 30 are arranged so as to be divided into even layers (specifically, eight layers), and the coil 20 has an even layer winding structure (specifically, eight layers). Structure). That is, in the present embodiment, the innermost layer that is the innermost layer in the first radial direction R1 (inner radial direction) in the slot 3 is the eighth layer. FIG. 6 is a diagram showing a partial arrangement state of the phase coil 21. In FIG. 6, the numbers given in the slots 3 are identification numbers indicating the arrangement order of the conductor side portions 30 along the direction of current flowing through the phase coil 21 (coil 20) (the extending direction of the linear conductor described later). Each quadrangle surrounding each identification number represents one conductor side 30. In FIG. 6, only a part of the conductor side portions 30 constituting the phase coil 21 are shown. However, in the following description, identification numbers not shown in FIG. 6 are used for easy understanding of the invention. May also mention.

  In FIG. 6, identification numbers are assigned in order from “1” to each of the pair of conductor side portions 30 (conductor side portion pair) along the current flow direction. In addition, although an alternating current flows through the phase coil 21 (coil 20), unless otherwise specified below, the direction of the current flowing from the power source side (power line side) toward the neutral point side (in FIGS. 3 to 6) The direction indicated by the arrow is the direction of the current flowing through the phase coil 21 (coil 20). A pair of conductor side portions 30 (conductor side portion pairs) to which the same numbers are attached constitute the coil 20 for one turn. That is, each identification number indicates the turn order of the coil 20. The numbers in parentheses attached to the upper portions of the slots 3 are numbers indicating the arrangement order of the slots 3 in the circumferential direction C. 4 and 5 to be referred to later also show the identification numbers of the conductor side portions 30 and the arrangement order of the slots 3 as in FIG.

  The phase coil 21 has an end connected to a power source or a neutral point. In the present embodiment, as shown in FIG. 6, the conductor side portion 30 with the identification number “1” constitutes the end of the phase coil 21 on the side connected to the power source, and the identification number is “64”. A certain conductor side portion 30 constitutes an end portion of the phase coil 21 on the side connected to the neutral point. And in this embodiment, the edge part by the side connected to the power supply of the phase coil 21 is arrange | positioned with respect to the stator core 2 at the axial first direction L1 side like the 1st crossover part 61 and the 2nd crossover part 62. Thus, the lead wire drawn out from the coil end portion is also arranged on the first axial direction L1 side with respect to the stator core 2 in the same manner as the first transition portion 61 and the second transition portion 62.

2. Configuration of Coil The coil 20 is configured by a linear conductor that is a linear conductor. The linear conductor is formed of a metal such as copper or aluminum, for example. As such a linear conductor, a conductor composed of a twisted line in which a plurality of thin wires are bundled, a conductor whose cross section orthogonal to the extending direction matches the cross sectional shape of the slot 3 (for example, a rectangular shape), or the like can be used. . In the present embodiment, the coil 20 is wound around the stator core 2 by lap winding and distributed winding. In addition, since the phase coil 21 of each phase has the same structure except that the arrangement positions in the circumferential direction C are different, in the following, one phase coil 21 shown in FIGS. (Only the part is shown) will be described.

  As shown in FIGS. 3 and 4, the phase coil 21 includes a plurality of concentric winding portions 50 and a plurality of crossover portions 60. 3 is a schematic diagram of a part of the phase coil 21 in the manufacturing stage of the stator 1 (hereinafter referred to as “first manufacturing stage”), and FIG. 4 is a diagram of the phase coil 21 in the first manufacturing stage. FIG. In FIG. 3, the stator core 2 and the jig 10 are shown in a simplified manner within a range where the positional relationship with the phase coil 21 in the circumferential direction C can be understood. As shown in FIG. 4, in this embodiment, the jig 10 is used when the coil 20 is wound around the stator core 2. The same number of jig slots 11 as the slots 3 of the stator core 2 are formed on the surface of the jig 10 on the radial second direction R2 side. As shown in FIG. 3 and FIG. 4, in the first manufacturing stage, a part of the plurality of conductor side portions 30 constituting the phase coil 21 is disposed in the slot 3 of the stator core 2, and the rest All the conductor side portions 30 are arranged in the jig slot 11. The jig slot 11 is basically formed in the same manner as the slot 3 except that the jig slot 11 is open to the radial second direction R2 side.

  FIG. 5 is a partial arrangement view of the phase coil 21 in the second manufacturing stage, which is a manufacturing stage after the first manufacturing stage. Specifically, FIG. 5 shows a state in which the jig 10 is rotated relative to the stator core 2 in the circumferential second direction C2 side (in this example, relative rotation by 6 slot pitches) from the state shown in FIG. . In accordance with this relative rotation, the transition portion 60 and the turn portion 22 of the phase coil 21 are deformed. FIG. 6 is a partial arrangement view of the phase coil 21 in the third manufacturing stage, which is a stage after the second manufacturing stage. Specifically, FIG. 6 shows a slot of the stator core 2 facing the jig slot 11 by pushing the conductor side portion 30 arranged in the jig slot 11 from the state shown in FIG. 3 is inserted. And the arrangement | positioning state of the phase coil 21 shown in FIG. 6 corresponds with the arrangement | positioning state of the conductor side part 30 in the state (state shown in FIG. 1) wound by the stator 1 as a finished product.

  The concentric winding portion 50 includes a coil portion (in other words, a “single coil portion” or “a coil portion” in which a plurality of conductor side portions 30 are arranged in each of the pair of slots 3 and wound a plurality of times between the pair of slots 3. The lap winding part ”). That is, the concentric winding part 50 is composed of a bundle of a plurality of linear conductors. Here, the “plurality” means that there are a plurality of cross sections in each cross section orthogonal to the extending direction of the linear conductors, and the linear conductors themselves may be connected as a whole. In this embodiment, the concentric winding part 50 which consists of a bundle of a plurality of linear conductors is formed by rotating one linear conductor a plurality of times. As shown in FIG. 3, the conductor side portions 30 constituting the same concentric winding portion 50 are connected by a turn portion 22. That is, the portion of the concentric winding portion 50 that protrudes from the stator core 2 in the axial direction L constitutes the turn portion 22. As will be described in detail later, as shown in FIG. 3, continuous K pieces (K represents a natural number) of concentric winding portions 50 constitute a concentric winding set 40. As will be described later, the plurality of concentric winding portions 50 constituting the same concentric winding set 40 are arranged in the slots 3 (slots 3 shifted by one slot pitch) in which the conductor side portions 30 thereof are adjacent to each other.

  In the present embodiment, the concentric winding portion 50 is an even-numbered winding coil portion (specifically, a four-turn winding coil portion) formed by winding a linear conductor an even number of times (specifically, four times). In FIG. 6, a total of eight conductor side portions 30 (four conductor side portion pairs) having identification numbers “M” to “M + 3” (M = 1, 5, 9,... 57, 61) One concentric winding part 50 is comprised. As shown in FIGS. 3 and 4, in the first manufacturing stage, among the even number (eight in this example) of conductor side portions 30 included in the concentric winding portion 50, half of the current directions are the same. Conductor side 30 (first conductor side set) is disposed in the slot 3 of the stator core 2 and the other half conductor side 30 (second conductor side set) having the same current direction is Arranged in the jig slot 11. In the first conductor side set and the second conductor side set, the direction of current is opposite. Then, in the third manufacturing stage, as shown in FIG. 6, the first conductor side part set and the second conductor side part set that constitute the same concentric winding part 50 are different from each other in the slots 3 (in this example, 6 The slots are divided into two slots 3) separated by a slot pitch. Moreover, in this embodiment, a 1st conductor edge part set is arrange | positioned in the radial second direction R2 side from the said 2nd conductor edge part set in the circumference 1st direction C1 side from a 2nd conductor edge part set. As described above, in the present embodiment, the plurality of conductor side portions 30 constituting the same concentric winding portion 50 are divided into two slots 3 that are separated from each other by 6 slot pitches.

  Moreover, in this embodiment, the phase coil 21 has the 1st concentric winding part 51 and the 2nd concentric winding part 52 whose winding directions are mutually opposite directions as the concentric winding part 50. In FIG. 6, a total of eight conductor side portions 30 with identification numbers “N” to “N + 3” (N = 1, 5, 17, 21, 33, 37, 49, 53) form one first concentric winding. Part 51 is configured. That is, the first concentric winding portion 51 is the concentric winding portion 50 in which the current flow direction is the clockwise direction when viewed from the first radial direction R1 side. In FIG. 6, a total of eight conductor side portions 30 with identification numbers “P” to “P + 3” (P = 9, 13, 25, 29, 41, 45, 57, 61) are included in one second. Concentric winding part 52 is constituted. That is, the second concentric winding part 52 is the concentric winding part 50 in which the current flow direction is the counterclockwise direction when viewed from the radial first direction R1 side.

  In the present embodiment, as shown in FIG. 3, in the first manufacturing stage, both the first concentric winding part 51 and the second concentric winding part 52 are formed so as to circulate in a spiral shape when viewed in the circumferential direction C. ing. Specifically, each of the first concentric winding part 51 and the second concentric winding part 52 has a spiral shape that circulates without crossing the linear conductors constituting the concentric winding part 50 when viewed in the circumferential direction C. Is formed. 4 to 6, both the first concentric winding portion 51 and the second concentric winding portion 52 are seen in the circumferential direction C even in the state of being wound around the stator 1 as a finished product. It becomes a shape that goes around in a spiral.

  The crossover portion 60 is a coil portion that connects the conductor side portions 30 of the pair of concentric winding portions 50 on the outer side in the axial direction L of the stator core 2. As shown in FIG. 6, the crossover portion 60 is formed so as to extend at least in the circumferential direction C, and connects a pair of conductor side portions 30 arranged separately in different slots 3. In the present embodiment, as the transition part 60, a first transition part 61, a second transition part 62, and a third transition part 63 are provided. That is, a part of the plurality of transition parts 60 is classified as the first transition part 61, and another part of the plurality of transition parts 60 is classified as the second transition part 62. In the present embodiment, the third transition part 63 is provided as the transition part 60 that is not classified as either the first transition part 61 or the second transition part 62. In the present embodiment, as shown in FIGS. 3 to 6, the first transition part 61, the second transition part 62, and the third transition part 63 are all arranged on the axial first direction L <b> 1 side with respect to the stator core 2. Is done.

  As shown in FIGS. 3 to 6, the phase coil 21 is configured such that a first concentric winding set 41 and a second concentric winding set 42 are alternately connected (specifically connected in series). Here, the first concentric winding set 41 is a concentric winding set 40 constituted by K continuous (K represents a natural number) first concentric winding portions 51, and the second concentric winding set 42 is continuous K. It is the concentric winding set 40 which the 2nd concentric winding part 52 comprises. That is, the first concentric winding set 41 and the second concentric winding set 42 form magnetic poles in different directions. In the present embodiment, K is set to “2” in accordance with the number of slots per phase per pole. That is, in the present embodiment, an even number (specifically, two) of concentric winding portions 50 that are continuous constitute a concentric winding set 40. In other words, an even number of concentric winding portions 50 connected in series constitute a concentric winding set 40. As shown in FIGS. 3 and 4, the concentric winding portions 50 constituting the same concentric winding set 40 are connected by a third crossover portion 63.

  Here, the conductor side portion 30 arranged at one end (the end portion on the downstream side in this example) along the current direction in the concentric winding set 40 is the first conductor side portion 31 and the other end (the upstream side in this example) The conductor side portion 30 disposed on the side end portion is referred to as a second conductor side portion 32. As shown in FIG. 6, the first conductor side 31 of the first concentric winding set 41 and the second conductor side 32 of the second concentric winding set 42 are arranged on the eighth layer (innermost layer) and They are connected to each other by a crossover 61. For example, the first conductor side 31 of the first concentric winding set 41 with the identification number “8” and the second conductor side 32 of the second concentric winding set 42 with the identification number “9” are the first crossover. The parts 61 are connected to each other.

  Thus, the 1st crossover part 61 is the crossover part 60 which connects different concentric winding sets 40. And the 1st crossing part 61 connects a pair of conductor side parts 30 arrange | positioned at the innermost layer (eighth layer) in the different slot 3. Thereby, as shown in FIG.1 and FIG.2, it is easy to arrange | position the 1st crossover part 61 so that the part by the side of the most radial first direction R1 in a coil end part may extend in the axial direction L. FIG. . And in this embodiment, as shown in FIG.1 and FIG.6, the 1st crossover part 61 is distribute | arranged by the multiple in the circumferential direction C, and is arrange | positioned. In FIG. 1, the first transition part 61 and the second transition part 62 provided in the same phase coil 21 are hatched.

  Further, as shown in FIG. 6, the second conductor side portion 32 of the first concentric winding set 41 and the first conductor side portion 31 of the second concentric winding set 42 are arranged in the first layer (outermost layer). At the same time, they are connected to each other by the second crossover 62. For example, the second conductor side 32 of the first concentric winding set 41 with the identification number “17” and the first conductor side 31 of the second concentric winding set 42 with the identification number “16” The parts 62 are connected to each other.

  Thus, the 2nd crossover part 62 is the crossover part 60 which connects different concentric winding sets 40. The second crossing portion 62 connects the pair of conductor side portions 30 arranged in the outermost layer (first layer) in the different slots 3. Thereby, as shown in FIG.1 and FIG.2, it is easy to arrange | position the 2nd transition part 62 so that the part by the side of the most radial second direction R2 in a coil end part may extend in the axial direction L. FIG. . And in this embodiment, as shown in FIG.1 and FIG.6, the 2nd crossover part 62 is disperse | distributed and arrange | positioned in the circumferential direction C. As shown in FIG. For simplification in FIG. 1, the end portions of the phase coil 21 also exist between the end portions of the phase coil 21 (the conductor side portion 30 with the identification number “1” in FIG. 6 and the identification number “64”). The coil end portion is illustrated as being connected by the second crossover portion 62 between the conductor side portion 30).

  In the present embodiment, as shown in FIG. 6, the first conductor side portion 31 of the first concentric winding set 41 is arranged on the first layer (outermost layer) of the slot 3 arranged in the eighth layer (innermost layer). The first conductor side 31 of the two concentric winding set 42 is disposed. For example, the second concentric winding set with the identification number “16” is placed on the first layer of the slot 3 where the first conductor side portion 31 of the first concentric winding set 41 with the identification number “24” is arranged on the eighth layer. 42 first conductor side portions 31 are arranged. Further, the second conductor side of the second concentric winding set 42 is disposed on the eighth layer (innermost layer) of the slot 3 in which the second conductor side 32 of the first concentric winding set 41 is disposed in the first layer (outermost layer). The part 32 is arranged. For example, the second concentric winding set with the identification number “25” is placed on the eighth layer of the slot 3 in which the second conductor side portion 32 of the first concentric winding set 41 with the identification number “17” is arranged in the first layer. 42 second conductor side portions 32 are arranged.

  By providing the configuration as described above, in the present embodiment, the first transition portion 61 and the second transition portion 62 are disposed at the same position in the circumferential direction C except for the arrangement portion of the end portion of the phase coil 21. Is done. Furthermore, in the present embodiment, as shown in FIG. 6, a pair of conductor side portions in which both the first crossing portion 61 and the second crossing portion 62 are divided and arranged in two slots 3 separated from each other by 5 slot pitches. Connect 30 to each other. Therefore, in the present embodiment, the first crossover portion 61 and the second crossover portion 62 are arranged at the same position in the circumferential direction C and have the same width (angular width) in the circumferential direction C.

  Next, the configuration of the first concentric winding set 41 and the second concentric winding set 42 will be specifically described. As shown in FIG. 3, an even number (two in this example) of first concentric winding portions 51 constitutes a first concentric winding set 41, and an even number (two in this example) of second concentric windings 41. The concentric winding part 52 constitutes the second concentric winding set 42. As described above, each of the first concentric winding portion 51 and the second concentric winding portion 52 is formed so as to circulate in a spiral shape when viewed in the circumferential direction C. Each of the first concentric winding set 41 and the second concentric winding set 42 includes a forward concentric winding portion 53 and a reverse concentric winding portion 54 in which the spiral vortex directions are opposite to each other. As shown in FIG. 3, the direction of the vortex of the positive concentric winding portion 53 is a direction away from the center portion of the vortex as it goes in the clockwise direction when viewed from the second circumferential direction C2. Moreover, the direction of the vortex of the reverse direction concentric winding portion 54 is a direction away from the center portion of the vortex as it goes counterclockwise as viewed from the second circumferential direction C2. Hereinafter, the conductor side portion 30 disposed at the center portion (most center side) of the spiral is referred to as a third conductor side portion 33.

  As shown in FIG. 3, in each of the concentric winding sets 40, the third conductor side portion 33 arranged at the center of the spiral of the forward concentric winding 53 is formed at the center of the spiral of the reverse concentric winding 54. The third conductor side portion 33 is connected to the third conductor side portion 33 via the third crossover portion 63. Specifically, as shown in FIG. 3, the first concentric winding set 41 includes one first concentric winding portion 51 that is a positive direction concentric winding portion 53, and is provided with respect to the first concentric winding portion 51. One first concentric winding part 51 which is the reverse direction concentric winding part 54 is provided on the circumferential first direction C1 side. In the present embodiment, as shown in FIG. 6, the first concentric winding portion 51 that is the reverse direction concentric winding portion 54 is in relation to the slot 3 in which the first concentric winding portion 51 that is the forward direction concentric winding portion 53 is disposed. Are arranged in the slot 3 adjacent to the circumferential first direction C1 side (slot 3 shifted by one slot pitch). The third conductor side portions 33 of the first concentric winding portions 51 are connected to each other by the third crossover portion 63. Thereby, the forward direction concentric winding part 53 and the reverse direction concentric winding part 54 constituting the first concentric winding set 41 are both counterclockwise when viewed from the circumferential second direction C2 side. Form magnetic poles in the same direction.

  Similarly, the second concentric winding set 42 includes one second concentric winding portion 52 that is a forward-direction concentric winding portion 53, and is opposite to the second concentric winding portion 52 in the circumferential second direction C <b> 2 side. One second concentric winding part 52 which is a direction concentric winding part 54 is provided. In the present embodiment, as shown in FIG. 6, the second concentric winding portion 52 that is the reverse direction concentric winding portion 54 is relative to the slot 3 in which the second concentric winding portion 52 that is the forward direction concentric winding portion 53 is disposed. And arranged in the slot 3 adjacent to the second circumferential direction C2. Then, the third conductor side portions 33 of the respective second concentric winding portions 52 are connected by the third crossover portion 63. Thereby, the forward direction concentric winding portion 53 and the reverse direction concentric winding portion 54 constituting the second concentric winding set 42 have the same current direction in the clockwise direction when viewed from the circumferential second direction C2. A magnetic pole is formed in the direction (however, opposite to the first concentric winding set 41).

  As shown in FIG. 3, the first conductor side 31 of the first concentric winding set 41 is composed of a conductor side 30 disposed on the opposite side to the spiral center of the reverse concentric winding 54, and The second conductor side portion 32 of the concentric winding set 41 is constituted by the conductor side portion 30 disposed on the opposite side of the spiral central portion of the forward direction concentric winding portion 53. On the other hand, the first conductor side portion 31 of the second concentric winding set 42 is constituted by the conductor side portion 30 disposed on the side opposite to the spiral central portion of the forward direction concentric winding portion 53, and the second concentric winding set 42. The second conductor side portion 32 is constituted by the conductor side portion 30 disposed on the opposite side to the spiral central portion of the reverse concentric winding portion 54. Therefore, in this embodiment, the conductor side part 30 arrange | positioned on the opposite side to the center part of the spiral of the reverse direction concentric winding part 54 with which the 1st concentric winding set 41 is provided, and the reverse direction with which the 2nd concentric winding set 42 is provided. The conductor side portions 30 arranged on the side opposite to the spiral central portion of the concentric winding portion 54 are connected to each other by the first crossover portion 61. Moreover, the conductor side part 30 arrange | positioned on the opposite side to the center part of the spiral of the normal direction concentric winding part 53 with which the 1st concentric winding set 41 is provided, and the positive direction concentric winding part 53 with which the 2nd concentric winding set 42 is provided. The conductor side portions 30 arranged on the side opposite to the center portion of the spiral are connected to each other by the second crossover portion 62.

  And as shown in FIG. 6, the slot 3 by which the conductor side part 30 which comprises the 1st concentric winding set 41 is arrange | positioned in radial second direction R2 side part (specifically 1st layer-4th layer). The conductor side 30 constituting the second concentric winding set 42 is arranged in the first radial direction R1 side portion (specifically, the fifth layer to the eighth layer) of the second concentric winding set 42. The conductor side portion 30 is disposed in the radial second direction R2 side portion (specifically, the first layer to the fourth layer), and the radial first direction R1 side portion (specifically, the fifth layer to the fourth layer) of the slot 3. In the eighth layer), the conductor side portions 30 constituting the first concentric winding set 41 are arranged. In the present embodiment, both the first concentric winding portion 51 and the second concentric winding portion 52 are formed so that the conductor side portion 30 on the circumferential first direction C1 side is the radial second direction R2 side portion in the slot 3 (specifically, Are arranged in the first layer to the fourth layer), and the conductor side portion 30 on the circumferential second direction C2 side is the radial first direction R1 side portion in the slot 3 (specifically, the fifth layer to the eighth layer). Placed in.

  Specifically, the conductor side portion 30 included in the positive direction concentric winding portion 53 of the first concentric winding set 41 is arranged in the second to eighth layers of the slot 3 arranged in the first to fourth layers. The conductor side part 30 which the reverse direction concentric winding part 54 of the concentric winding set 42 has is arrange | positioned, and the conductor side part 30 which the reverse direction concentric winding part 54 of the 1st concentric winding set 41 has is arrange | positioned in the 1st layer-the 4th layer. The conductor side portions 30 of the positive concentric winding portion 53 of the second concentric winding set 42 are arranged in the fifth to eighth layers of the slot 3 formed. In addition, the first concentric winding set is provided on the fifth to eighth layers of the slot 3 in which the conductor side portions 30 of the reverse concentric winding portion 54 of the second concentric winding set 42 are arranged in the first to fourth layers. 41 is a slot in which the conductor side 30 of the positive concentric winding part 53 of 41 is arranged, and the conductor side 30 of the positive concentric winding part 53 of the second concentric winding set 42 is arranged in the first to fourth layers. The conductor side portions 30 of the reverse concentric winding portion 54 of the first concentric winding set 41 are arranged in the third to eighth layers.

  Here, the slot 3 in which the conductor side portion 30 included in the positive concentric winding portion 53 of the first concentric winding set 41 is disposed in the first layer to the fourth layer is referred to as a reference (hereinafter referred to as “reference slot”). Then, the slot 3 adjacent to the first circumferential direction C1 side of the reference slot (the slot 3 separated by one slot pitch) is the conductor side portion 30 included in the reverse concentric winding portion 54 of the first concentric winding set 41. ~ Slot 3 arranged in the fourth layer. Further, the slot 3 that is spaced 6 slots from the reference slot in the first circumferential direction C1 side has the conductor side portion 30 of the reverse concentric winding portion 54 of the second concentric winding set 42 arranged in the first to fourth layers. Slot 3 to be performed. Then, the slot 3 that is 7 pitches away from the reference slot in the circumferential first direction C1 side has the conductor side portion 30 of the positive concentric winding portion 53 of the second concentric winding set 42 arranged in the first to fourth layers. Slot 3 to be performed.

  As shown in FIG. 6, the first concentric winding set 41 and the second concentric winding set 42 are arranged in the radial direction R in the arrangement direction along the current direction of the conductor side portion 30 constituting each concentric winding set 40. Are in the opposite order. Specifically, as is apparent from the arrangement of the conductor side portions 30 with the identification numbers “1” to “8” constituting the first concentric winding set 41, the conductor side portions 30 constituting the first concentric winding set 41. The arrangement order of the radial direction R along the current direction is as follows: first layer, eighth layer, second layer, seventh layer, third layer, sixth layer, fourth layer, fifth layer, fourth layer Layer, fifth layer, third layer, sixth layer, second layer, seventh layer, first layer, eighth layer. On the other hand, as is clear from the arrangement of the conductor side portions 30 with the identification numbers “9” to “16” constituting the second concentric winding set 42, the current of the conductor side portion 30 constituting the second concentric winding set 42 is The arrangement order of the radial direction R along the direction is as follows: eighth layer, first layer, seventh layer, second layer, sixth layer, third layer, fifth layer, fourth layer, fifth layer, The order is four layers, sixth layer, third layer, seventh layer, second layer, eighth layer, and first layer. As described above, the arrangement order of the first concentric winding set 41 and the second concentric winding set 42 along the current direction of the conductor side portions 30 constituting the respective concentric winding sets 40 is opposite to each other in the radial direction R. It has become the order.

  The relationship of the arrangement order of the conductor side portions 30 in the radial direction R is also established in the first manufacturing stage shown in FIG. In the state shown in FIG. 3, the first concentric winding set 41 and the second concentric winding set 42 are arranged in the circumferential direction C at the arrangement position of the transition portion 60 (first transition portion 61 in FIG. 3) that connects them. The planes orthogonal to each other are symmetrical planes and are symmetrical with respect to each other (mirror image object). That is, as shown in FIG. 3, both the first concentric winding set 41 and the second concentric winding set 42 are arranged in the reverse concentric winding portion 54 and the positive concentric winding portion as they move away from the first transition portion 61 in the circumferential direction C. 53 in order, the linear conductor constituting the first concentric winding set 41 and the linear conductor constituting the second concentric winding set 42 have the same or similar shape when viewed from one side in the circumferential direction C. It is formed as follows.

3. Configuration of Bundling Member Each of the first transition part 61 and the second transition part 62 included in the phase coil 21 is dispersedly arranged in the circumferential direction C as described above. And in this embodiment, as shown in FIG. 1, the 1st transition part 61 with which each of the phase coil 21 is equipped is the 1st transition part 61 of the other phase arrange | positioned on the both sides of the circumferential direction C, and the circumferential direction C. A plurality of the positions are overlapped along the circumferential direction C in a partially overlapping state. Moreover, in this embodiment, as shown in FIG. 1, the 2nd transition part 62 with which each of the phase coil 21 is equipped is the 2nd transition part 62 of the other phase arrange | positioned at the both sides of the circumferential direction C, and the circumferential direction C. A plurality of the positions are overlapped along the circumferential direction C in a partially overlapping state. In addition, a pair of transition parts 61 and 62 arrange | positioned at the both sides of the circumferential direction C of the transition parts 61 and 62 of a specific phase (for example, U phase) are phases different from the said specific phase, and mutually different phases ( For example, the transition portions 61 and 62 of the V phase and the W phase are used.

  The first transition part 61 and the second transition part 62 are bound together by a binding member 90. The binding member 90 is made of a material having at least a surface having high electrical insulation. In this binding member 90, the direction (hereinafter referred to as “binding direction”) connecting the first transition portion 61 and the second transition portion 62 from the first transition portion 61 toward the second transition portion 62 is the radial direction R. It extends so as to have a component toward the outside (diameter second direction R2 side). In the present embodiment, the binding members 90 are alternately wound around the first transition part 61 and the second transition part 62.

  Specifically, in the present embodiment, as shown in FIG. 1, the first transition part 61 and the second transition part 62 are arranged at the same position in the circumferential direction C, and the binding member 90 has a radial direction R. The first crossover portion 61 and the second crossing direction are such that the two directions of the direction toward the second radial direction R2 parallel to the second direction and the direction toward the second radial direction R2 toward the second circumferential direction C2 are the binding direction. It is wound around the crossover part 62 alternately. In this embodiment, the latter direction is the first crossing portion 61 and the second crossing direction C2 side with respect to the second crossing portion 62 arranged at the same position in the circumferential direction C as the first crossing portion 61. It is the direction which connects the 2nd crossing part 62 adjacent to. Therefore, in the present embodiment, the bundling member 90 is connected in the circumferential direction C with respect to the bridging portion group composed of the first bridging portion 61 and the second bridging portion 62 arranged at the same circumferential direction C position. It arrange | positions so that a part group may be bound one by one toward the one side in the circumferential direction C. FIG.

  In the present embodiment, as shown in FIGS. 1 and 2, the first transition portion 61 includes a pair of first axially extending portions 61 a extending in the axial direction L from the stator core 2 and a pair of first extending portions 61 a. It has the 1st circumferential direction extension part 61b which connects the axial direction extension parts 61a. A bent portion in the radial direction R is formed at the boundary between the first axially extending portion 61a and the first circumferentially extending portion 61b, and the first circumferentially extending portion 61b extends in the first axial direction. It arrange | positions from the part 61a at the diameter 2nd direction R2 side. The first circumferentially extending portion 61b is disposed outside the turn portion 22 in the axial direction L (on the first axial direction L1 side). The second crossover 62 has a second axial extension 62a corresponding to the first axial extension 61a and a second circumferential extension 62b corresponding to the first circumferential extension 61b. The second circumferentially extending portion 62b is disposed closer to the first radial direction R1 than the second axially extending portion 62a. Further, the second circumferentially extending portion 62b is disposed outside the turn portion 22 in the axial direction L (on the first axial direction L1 side). The bundling member 90 is wound around the central portion in the circumferential direction C of the first circumferential extending portion 61b and is also wound around the central portion in the circumferential direction C of the second circumferential extending portion 62b.

  By providing the configuration as described above, the annular portion formed by the turn portion 22 in the coil end portion is formed in the radial direction R by the first transition portion 61 and the second transition portion 62 that are bound by the binding member 90. It is clamped from both sides, and movement along the radial direction R is restricted. Further, the annular portion is also restricted from moving outward in the axial direction L (on the first axial direction L1 side) by the crossing portions 61 and 62 and the binding member 90. In the example shown in FIG. 1, the binding member 90 is configured by a single linear member. However, the binding member 90 is configured by a plurality of linear members, and the plurality of linear members are different from each other. It can also be set as the structure to bind.

4). Other Embodiments Finally, other embodiments of the armature for a rotating electrical machine according to the present invention will be described. Note that the configurations disclosed in the following embodiments can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction arises.

(1) In the above-described embodiment, the configuration in which the binding member 90 is alternately wound around the first transition portion 61 and the second transition portion 62 has been described as an example. However, the embodiment of the present invention is not limited to this, and the configuration in which the bundling member 90 is continuously wound around the plurality of first transition portions 61 or the bundling member 90 is a plurality of second portions. It can also be set as the structure wound around the transition part 62 continuously.

(2) In the above embodiment, the binding member 90 is wound around the central portion in the circumferential direction C of the first circumferential extending portion 61b and the central portion in the circumferential direction C of the second circumferential extending portion 62b. An example of a configuration that is wound around the cable has been described. However, the embodiment of the present invention is not limited to this. For example, the bundling member 90 is wound around one end of the first circumferential extending portion 61b in the circumferential direction C, It can be set as the structure wound around the edge part in any one side of the circumferential direction C of the 2nd circumferential direction extension part 62b. At this time, the portion around which the binding member 90 is wound in the first circumferential extending portion 61b and the portion around which the binding member 90 is wound in the second circumferential extending portion 62b are the ends on the same side in the circumferential direction C. It is good also as an edge part on a mutually different side as a part.

(3) In the above embodiment, the case where K is “2” and two continuous concentric winding portions 50 constitute the concentric winding set 40 has been described as an example. However, the embodiment of the present invention is not limited to this, and K may be an even number (for example, “4”) other than “2” in accordance with the number of slots per pole and each phase. Further, K is not limited to an even number, and K may be an odd number. In this case, K can be set to “1” and the concentric winding part 50 constituting the concentric winding set 40 can be configured as one. Thus, in the case where K is an odd number, the concentric winding portion 50 is not formed so as to circulate in a spiral shape when viewed in the circumferential direction, and the concentric winding portion 50 is configured when viewed in the circumferential direction. It can be formed in a shape where linear conductors intersect.

(4) In the above embodiment, the first concentric winding set 41 has the first conductor side portion 31 on the first layer (outermost layer) of the slot 3 arranged in the eighth layer (innermost layer). The first conductor side 31 of the set 42 is disposed, and the second conductor side 32 of the first concentric winding set 41 is disposed on the eighth layer (innermost layer) of the slot 3 disposed in the first layer (outermost layer). The configuration in which the second conductor side portion 32 of the second concentric winding set 42 is disposed has been described as an example. However, the embodiment of the present invention is not limited to this, and the first conductor side 31 of the first concentric winding set 41 is adjacent to the slot 3 arranged in the eighth layer (innermost layer). The first conductor side 31 of the second concentric winding set 42 is arranged in the first layer (outermost layer), and the second conductor side 32 of the first concentric winding set 41 is the first layer (outermost layer). The second conductor side portion 32 of the second concentric winding set 42 may be arranged on the eighth layer (innermost layer) of the slot 3 adjacent to the slot 3 arranged in FIG.

(5) In the above embodiment, the second concentric winding is provided on the first radial direction R1 side portion of the slot 3 in which the conductor side 30 constituting the first concentric winding set 41 is disposed on the second radial direction R2 side portion. The conductor side 30 constituting the set 42 is arranged, and the conductor side 30 constituting the second concentric winding set 42 is arranged on the radial first direction R1 side portion of the slot 3 arranged on the radial second direction R2 side portion. The configuration in which the conductor side portions 30 constituting the first concentric winding set 41 are arranged has been described as an example. However, the embodiment of the present invention is not limited to this, and the conductor side 30 constituting the first concentric winding set 41 and the conductor side 30 constituting the second concentric winding set 42 are in the same slot. It is also possible to adopt a configuration that is not arranged in 3.

(6) In said embodiment, about the 1st axial direction extension part 61a and the 1st circumferential direction extension part 61b of the 1st crossover part 61, the 1st circumferential direction extension part 61b is 1st axial direction extension. An example is a configuration in which the first circumferential direction extending portion 61b is disposed on the outer side in the axial direction L from the turn portion 22 (on the first axial direction L1 side) while being disposed on the radial second direction R2 side from the existing portion 61a. As explained. However, the embodiment of the present invention is not limited to this, and the configuration in which the first circumferentially extending portion 61b and the first axially extending portion 61a are disposed at the same radial direction R position, It is also possible to adopt a configuration in which the circumferentially extending portion 61b is disposed closer to the axial second direction L2 side than the end surface of the turn portion 22 on the axial first direction L1 side. The same applies to the second axially extending part 62a and the second circumferentially extending part 62b of the second crossing part 62.

(7) In the above embodiment, the case where the armature for a rotating electrical machine according to the present invention is applied to the stator 1 of the inner rotor type rotating electrical machine has been described as an example. However, the embodiment of the present invention is not limited to this, and the armature for a rotating electrical machine according to the present invention can be applied to the stator 1 of an outer rotor type rotating electrical machine. In this case, the first radial direction R1 side (radial inner side) is the side opposite to the magnetic field in the radial direction R (counterfield side), and the second radial direction R2 side (radial outer side) is the radial direction R. On the field side.

(8) Regarding other configurations as well, the embodiments disclosed herein are illustrative in all respects, and the embodiments of the present invention are not limited thereto. In other words, configurations that are not described in the claims of the present application can be modified as appropriate without departing from the object of the present invention.

  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 arranged in a distributed manner in the circumferential direction of the core reference surface, and a conductor side portion arranged in the slot. It can utilize suitably for the armature for rotary electric machines provided with the coil wound by the child core.

1: Stator (armature for rotating electrical machine)
2: Stator core (armature core)
3: Slot 20: Coil 21: Phase coil 30: Conductor side 31: First conductor side 32: Second conductor side 40: Concentric winding set 41: First concentric winding set 42: Second concentric winding set 50: Concentric winding part 51: First concentric winding part 52: Second concentric winding part 53: Forward concentric winding part 54: Reverse concentric winding part 60: Transition part 61: First transition part 62: Second transition part 90: Binding Member C: circumferential direction L: axial direction R: radial direction S: core reference plane

Claims (6)

The armature core having an armature core in which a plurality of slots extending in the axial direction of the cylindrical core reference surface are distributed in the circumferential direction of the core reference surface, and a conductor side portion arranged in the slot A coil wound around the armature for a rotating electric machine,
The coil includes a plurality of concentric winding portions in which a plurality of the conductor side portions are disposed in each of the pair of slots and is wound a plurality of times between the pair of slots, and each of the pair of concentric winding portions. A plurality of connecting portions that connect the conductor side portions of the armature core on the outer side in the axial direction,
The first transition part, which is a part of the plurality of transition parts, connects a pair of the conductor side parts arranged in the innermost layer which is the innermost radial direction layer in the different slots,
The second transition part, which is another part of the plurality of transition parts, connects the pair of conductor side parts arranged in the outermost layer which is the outermost layer in the radial direction in the different slots,
The binding member that extends from the first crossing portion toward the second crossing portion so that a direction connecting the first crossing portion and the second crossing portion has an outward component in the radial direction. An armature for a rotating electrical machine in which a transition part and the second transition part are bound to each other. A plurality of the first crossover part and the second crossover part are arranged in a distributed manner in the circumferential direction,
2. The armature for a rotating electrical machine according to claim 1, wherein the binding member is alternately wound around the first transition part and the second transition part. Consecutive K pieces (K represents a natural number) that form a concentric winding set,
In the concentric winding set, the conductor side portion arranged at one end along the direction of the current flowing through the coil is a first conductor side portion, and the conductor side portion arranged at the other end is a second conductor side portion. And
The coil has a first concentric winding portion and a second concentric winding portion whose winding directions are opposite to each other,
The first concentric winding set constituted by the first concentric winding portion and the second concentric winding set constituted by the second concentric winding portion are alternately connected to constitute the coil,
The first conductor side part of the first concentric winding set and the second conductor side part of the second concentric winding set are arranged in the innermost layer and connected to each other by the first crossover part,
The second conductor side part of the first concentric winding set and the first conductor side part of the second concentric winding set are arranged in the outermost layer and connected to each other by the second crossing part. Item 3. The armature for a rotating electric machine according to Item 1 or 2. The first conductor side of the second concentric winding set is disposed on the outermost layer of the slot in which the first conductor side of the first concentric winding set is disposed on the innermost layer;
The second conductor side part of the second concentric winding set is arranged in the innermost layer of the slot in which the second conductor side part of the first concentric winding set is arranged in the outermost layer. The armature for rotary electric machines described in 1. The L concentric winding portions that are continuous L (L represents an even number of 2 or more) constitute the concentric winding set,
The concentric winding portion is formed so as to circulate in a spiral shape when viewed in the circumferential direction,
Each of the concentric winding sets includes a forward concentric winding portion and a reverse concentric winding portion in which directions of the spiral vortex are opposite to each other,
In each of the concentric winding sets, the conductor side portion arranged at the center portion of the spiral of the forward direction concentric winding portion is connected to the conductor side portion arranged at the center portion of the spiral of the reverse direction concentric winding portion. Connected through the crossover,
The conductor side portion disposed on the opposite side of the spiral center of the reverse concentric winding portion provided in the first concentric winding set, and the spiral of the reverse concentric winding portion provided in the second concentric winding set. The conductor side portions arranged on the side opposite to the center portion are connected to each other by the first crossover portion,
The conductor side portion disposed on the opposite side to the spiral central portion of the positive concentric winding portion provided in the first concentric winding set, and the spiral of the positive concentric winding portion provided in the second concentric winding set. 5. The armature for a rotating electrical machine according to claim 3, wherein the conductor side portion disposed on the side opposite to the center portion is connected to each other by the second crossing portion. The coil has a phase coil corresponding to each of a plurality of phases,
In the circumferential direction, the first transition part provided in each of the phase coils partially overlaps the first transition part of the other phase disposed on both sides of the circumferential direction and the circumferential position. Are arranged along
In the circumferential direction, the second transition part provided in each of the phase coils partially overlaps the second transition part of the other phase arranged on both sides of the circumferential direction and the circumferential position. The armature for rotary electric machines as described in any one of Claim 1 to 5 arrange | positioned along with.

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