JP2012016100A - Rotary electrical machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary electrical machine having a stator capable of simplifying routing work of a terminal portion of a coil to a storage groove, suppressing withdrawal of the terminal portion from the storage groove and improving production efficiency.SOLUTION: A stator 10 having a stator core 16 where a plurality of split core portions 14 is annularly arranged and formed is incorporated in a rotary electrical machine. The split core portion 14 includes a split iron core 24, an insulator 26 surrounding the split iron core 24 and a coil 18 wound to the split iron core 24 via the insulator 26. First storage grooves 86a and 120a extending along an arrow C direction are formed at an external end face in an arrow B1 direction of the insulator 26. First lower stopper portions 76a and 110a projected to an arrow A direction are formed at an end in the arrow B1 direction in lower faces of first extending plates 64 and 100 constituting the first storage grooves 86a and 120a.

Description

  The present invention relates to a rotating electrical machine having a stator core formed by annularly arranging a plurality of divided core portions.

  2. Description of the Related Art Conventionally, a rotating electrical machine formed by arranging a plurality of divided core portions annularly having a divided iron core, an insulator surrounding a part of the divided iron core, and a coil around which the divided iron core is wound via the insulator. 2. Description of the Related Art A rotating electric machine, for example, a motor, that widely connects a terminal portion of a coil of each divided core portion to an annular conductor (bus ring) connected to an input terminal is widely used in a stator for a motor.

  In such a stator for a rotating electrical machine, the number of bus rings corresponding to the number of phases is prepared, and the terminal portions of the coils of the same phase are electrically connected to one bus ring via a terminal. For this reason, there are many parts required for the wire connection process of the coil terminal, which increases the manufacturing cost of the rotating electrical machine, and the work of the wire connection process is complicated, leading to a decrease in productivity.

  In order to address such a problem, a plurality of divided core portions are arranged in an annular shape around the rotor, and among the insulators provided with the coils of the divided core portions, they are formed on the outer end surface of the rotor in the radial direction. In addition, a technical idea has been proposed in which a coil end (terminal portion) is routed in a U-shaped storage groove extending in the circumferential direction of the rotor and directly connected to a power line (input terminal) ( Patent Document 1).

  In Patent Document 1, a curved surface that is continuous with the groove bottom surface and is curved in a semicircular shape on the radially inner side of the rotor is formed on the outer wall portion that forms the groove bottom surface of the storage groove. A cylindrical projection structure is provided so that a predetermined gap is formed between them, and the terminal portion of the coil that is routed in the storage groove is passed through the gap, so that the terminal portion is moved outward by Lorentz force. A structure that suppresses popping out is described.

JP 2009-183071 A

  In the invention disclosed in Patent Document 1 described above, when the terminal portion of the coil is routed around the storage groove, the terminal portion is bent between the curved surface of the outer wall portion and the protruding structure. Since it is necessary to pass through the gap, the work of drawing the terminal portion becomes complicated.

  The present invention has been made in consideration of such a problem, and simplifies the routing operation of the coil terminal portion to the storage groove and suppresses the terminal portion from being detached from the storage groove. It aims at providing the rotary electric machine provided with the stator which can improve production efficiency by.

  The invention specified in claim 1 of the present application is a rotating electrical machine incorporating a stator including a stator core formed by annularly arranging a plurality of divided core portions, wherein the plurality of divided core portions constituting the stator Each includes a split iron core, an insulator surrounding a part of the split iron core, and a coil wound around the split iron core via the insulator, and of the insulator, radially outside the stator core An outer end surface of the stator core is formed with a storage groove that extends along the circumferential direction of the stator core and through which a terminal portion of the coil is routed, and of the groove side surfaces constituting the storage groove, the radial direction of the stator core The outer end portion includes a stator in which a first stopper portion protruding in the axial direction of the stator core is formed.

  According to the invention specified in claim 1 of the present application, since the first stopper portion is formed on the groove side surface of the storage groove, for example, the Lorentz force directed outward in the radial direction of the stator core is applied to the terminal portion of the coil. Even if it is a case, it can suppress that this terminal part detaches | leaves from this storage groove. In addition, when the terminal portion of the coil is routed around the storage groove, it is not necessary to bend a part of the terminal portion in a semicircular shape, thereby simplifying the routing operation of the terminal portion. As a result, not only the stator itself but also the effect of improving the production efficiency of the entire rotating electrical machine can be obtained.

  The invention specified in claim 2 of the present application is the rotating electrical machine according to claim 1, wherein the side wall portion forming the groove side surface is formed in a flat plate shape, and has a thick portion and a thin portion, The thin portion has flexibility.

  According to the invention specified in claim 2 of the present application, the thin portion can be elastically deformed in the axial direction of the stator core, so that the area of the opening portion of the storage groove opened on the outer end surface of the insulator can be expanded. Therefore, when the terminal portion of the coil is routed around the storage groove, it is possible to suppress interference between the terminal member and the first stopper portion.

  The invention specified in claim 3 of the present application is the rotary electric machine according to claim 1 or 2, wherein the divided iron core is configured by laminating a plurality of metal plates, and the plurality of metal plates include the plurality of metal plates. A through hole is formed along the stacking direction of the metal plates, and the insulator is formed with an insertion hole corresponding to the through hole, inserted into the through hole and the insertion hole, and the divided iron core and the insulator And a fastening member that tightens from the outside.

  According to the invention specified in claim 3 of the present application, the fastening member is inserted into the through hole and the insertion hole, and the split iron core and the insulator are tightened from the outside. The iron core and the insulator can be fixed at the same time. Further, for example, the split core portion can be directly fixed to a transmission case or the like by using the fastening member, so that a member such as a holder for holding the split core portion can be omitted. Thereby, the member cost of the rotating electrical machine can be reduced, and the space can be saved.

  The invention specified by claim 4 of the present application is the rotating electrical machine according to any one of claims 1 to 3, wherein the stator core is formed on the side surface of the storage groove where the first stopper portion is formed. A second stopper portion that is spaced apart from the first stopper portion and protrudes in the axial direction of the stator core is formed at the radially outer end, and the first stopper portion and the second stopper portion are formed. And the stator is set to be larger than the width of the end portion of the coil.

  According to the invention specified in claim 4 of the present application, since the separation interval between the first stopper portion and the second stopper portion is set larger than the width (diameter) of the terminal portion of the coil, a plurality of split cores When arrange | positioning a part cyclically | annularly, this terminal part can be arrange | positioned on the outer side of an insulator via between the said 1st stopper part and the said 2nd stopper part. Thereby, it can prevent suitably that this terminal part interferes with the adjacent split core part.

  The invention specified by claim 5 of the present application is the rotating electrical machine according to any one of claims 1 to 4, wherein the coils of the plurality of divided core portions constituting the stator are U-phase, V-phase, The storage groove is classified into three phases of W phase, and the storage groove includes a first storage groove in which a terminal portion of a coil forming a neutral point is routed and a first storage groove in which a terminal portion of a U phase coil is routed. 2 storage grooves, a third storage groove in which the terminal portion of the V-phase coil is routed, and a fourth storage groove in which the terminal portion of the W-phase coil is routed. The housing groove has a stator arranged in the axial direction of the stator core.

  According to the invention specified in claim 5 of the present application, since the terminal portions of the coils of different phases are respectively routed to the different housing grooves, the insulation treatment of the coil terminal portions can be omitted.

  The invention specified in claim 6 of the present application is the rotating electrical machine according to claim 5, wherein the insulator constituting the stator includes a winding portion provided with the coil, and a radius of the stator core than the winding portion. A wiring portion that is located outside in the direction and in which the storage groove is formed, and an end portion on the winding portion side of the wiring portion is connected to the winding portion and the coil A side groove in which the terminal portion can be arranged is formed.

  According to the invention specified in claim 6 of the present application, it is possible to wind the coil wire around the winding portion in a state where one end portion of the coil is arranged in the side groove. Thereby, it can prevent that the terminal part of the said coil gets in the way during the winding operation | work of the said coil strand. Further, at the end of the winding operation, both terminal portions of the coil can be positioned radially outward of the stator core with respect to the winding portion, so that both the terminal portions are easily guided to the storage groove. be able to.

  According to the present invention, since the first stopper portion is provided on the groove side surface of the storage groove of the stator core constituting the stator, it is possible to suppress the terminal portion from being detached from the storage groove. Further, when the terminal portion of the coil is routed around the storage groove, it is not necessary to bend a part of the terminal portion in a semicircular shape, so that the operation of routing the coil terminal portion is simplified. As a result, not only the stator itself but also the effect of improving the production efficiency of the entire rotating electrical machine can be obtained.

It is a top view of the stator which concerns on embodiment of this invention. It is a perspective view of the division | segmentation core part which forms the stator of FIG. FIG. 3 is an exploded perspective view of the split core portion of FIG. 2 in which a coil, a neutral point terminal portion, and an input terminal portion are omitted. FIG. 4 is an enlarged perspective view showing a first wiring portion shown in FIG. 3 and its surroundings. It is sectional drawing along the VV line of FIG. It is an expansion perspective view which shows the 2nd wiring part shown in FIG. 3, and its periphery. It is sectional drawing along the VII-VII line of FIG. It is a top view which shows the state which has wound the coil wire around the winding part. The neutral point terminal portion is guided to the first storage groove of the first wiring portion through the gap between the first wiring portion and the second wiring portion, and the input terminal portion of the U-phase coil is passed through the gap. It is a top view which shows the state led to the 2nd storage groove of the 1st wiring part. It is a perspective view of the division | segmentation core part shown in FIG. It is a partially-omission plan view of a state where a plurality of divided core parts are arranged annularly along the inner peripheral surface of the housing. It is sectional drawing of the 2nd wiring part of the split core part which has a V6 phase coil.

  Hereinafter, preferred embodiments of a rotating electrical machine according to the present invention will be described in relation to a stator incorporated therein, and will be described in detail with reference to the accompanying drawings.

  First, a stator for a rotating electrical machine (hereinafter simply referred to as a stator 10) according to this embodiment constitutes a rotating electrical machine in combination with a rotor provided therein, and is used as, for example, an electric motor or a generator.

  The stator 10 is a so-called three-phase Y-type stator, and as shown in FIG. 1, a hollow holder (housing) 12 and three-phase input terminals U, V, W provided on the holder 12 A neutral terminal N that forms a neutral point, and a stator core 16 that is formed by annularly arranging a plurality (18 in FIG. 1) of divided core portions 14 along the inner peripheral surface 12 a of the holder 12. ing.

  The stator core 16 includes six divided core portions 14 each having U-phase, V-phase, and W-phase coils 18. As can be seen from FIG. 1, the stator core 16 has a plurality of divided core portions 14 in an annular shape so that the U-phase, V-phase, and W-phase coils 18 are repeatedly arranged in this order six times counterclockwise. Are arranged and formed.

  As shown in FIGS. 1, 2, and 11, the split core portion 14 having the U-phase coil 18 extends from one end portion of the coil wire 18 a constituting the coil 18 to the input terminal U. The split core portion 14 having the V-phase coil 18 is electrically connected to the input terminal V extending from one end portion of the coil wire 18a constituting the coil 18. The split core portion 14 having the W-phase coil 18 is connected to the input terminal portion 20 </ b> V to be connected to the input terminal W extending from one end portion of the coil wire 18 a constituting the coil 18. Each including a terminal unit 20W. FIG. 2 shows the split core portion 14 having the U-phase coil 18.

  In the following description, the reference numerals “U”, “V”, and “W” may be omitted when the U-phase, V-phase, and W-phase are not distinguished in the input terminal units 20U, 20V, and 20W. .

  As shown in FIG. 2 and FIG. 3, each divided core portion 14 includes a divided iron core 24 configured by laminating a plurality of substantially T-shaped metal plates (steel plates) 22 punched by a press, and a divided iron core 24. The insulator 26 to be insulated, the bolt (fastening member) 28 for fixing the divided iron core 24 and the insulator 26, and the other end portion of the coil wire 18 a of the coil 18 wound around the divided iron core 24 via the insulator 26. And a neutral point terminal 30 that is electrically connected to the neutral terminal N.

  Each of the neutral point terminal portion 30 and the coil wire 18a, and the input terminal portion 20 and the coil wire 18a are configured continuously. That is, the neutral point terminal unit 30, the coil wire 18a, and the input terminal unit 20 are one continuous conductor. And the said conducting wire is formed in the cross-sectional rectangle shape. In addition, this conducting wire is not limited to what was formed in the cross-sectional rectangular shape, For example, the cross-sectional circle shape and the cross-sectional square shape may be formed.

  The split core 24 is substantially T-shaped, and includes a yoke portion 24a corresponding to the upper side of the “T” character and a magnetic pole portion 24b corresponding to the lower side extension portion of the “T” character.

  A substantially semicircular fitting concave portion 32 is formed at one end of the yoke portion 24a, and a substantially semicircular fitting convex portion 34 corresponding to the fitting concave portion 32 is formed at the other end of the yoke portion 24a. ing. In addition, a through hole 36 is formed substantially at the center of the yoke portion 24a along the stacking direction of the plurality of metal plates 22 (the axial direction of the stator core 16 and the arrow A direction).

  The insulator 26 has flexibility and is made of, for example, resin. The insulator 26 has a winding part 38 around which the coil wire 18a is wound, and a wiring part 40 located on the radially outer side (arrow B1 direction) of the stator core 16 with respect to the winding part 38. .

  The winding portion 38 includes an upper winding portion 38a and a lower winding portion 38b. The upper winding portion 38a includes an upper winding portion main body 42a having a substantially U-shaped cross section, and the upper winding portion 38a. An upper inner peripheral wall 44a erected on the radially inner end (in the direction of arrow B2) of the stator core 16 in the winding portion main body 42a, and extends along the arrow A direction in the upper winding portion main body 42a. An upper outer peripheral wall 46a is provided to stand at an end portion in the direction of the arrow B1 of the portion that is present and faces the upper inner peripheral wall 44a.

  On the other hand, the lower winding portion 38b is erected at the end of the lower winding portion main body 42b formed in a substantially U-shaped cross section and the arrow B2 direction among the lower winding portion main body 42b. A lower inner peripheral wall 44b and a lower outer peripheral wall 46b that stands up at the end of the lower winding portion main body 42b in the direction of the arrow B1 and faces the lower inner peripheral wall 44b are provided.

  The upper winding portion main body 42a and the lower winding portion main body 42b, the upper inner peripheral wall 44a and the lower inner peripheral wall 44b, and the upper outer peripheral wall 46a and the lower outer peripheral wall 46b are partially overlapped and joined. That is, the lower winding portion 38b is inserted from below the upper winding portion 38a, and the upper winding portion 38a and the lower winding portion 38b are integrated to form the winding portion 38. The magnetic pole portion 24b of the split iron core 24 is inserted into the central hole 48 obtained as a result of the integration.

  The wiring portion 40 includes a support plate 50 extending in the direction of arrow B1 from the vicinity of the upper end portion of the upper outer peripheral wall 46a, and first and second wiring portions 52 and 54 provided on the upper surface of the support plate 50. Yes.

  The first and second wiring portions 52 and 54 are arranged apart from each other in the circumferential direction (arrow C direction) of the stator core 16. The gap 56 between the first wiring portion 52 and the second wiring portion 54 is set to such an extent that the neutral point terminal portion 30 and the input terminal portion 20 can be inserted.

  As shown in FIG. 4, the first wiring part 52 is disposed on the upper surface of the first base 58 having a substantially square shape (substantially trapezoidal shape: see FIG. 8) and the support plate 50 in a top view and the first base part. And a second base portion 60 having a substantially square shape (substantially trapezoidal shape) in a top view connected to the lower surface of 58.

  The first base 58 is formed at the end of the first base 58 in the direction of the arrow B1 and extends along the direction of the arrow C (see FIG. 8), and on the first outer end surface 58a. A first curved surface 58b that is continuous and gently curved toward the upper winding body 42a, a first guide surface 58c that is continuous with the first curved surface 58b and faces the second wiring portion 54, and the first guide A first inner end surface 58d connected to the surface 58c and formed at the end of the first base 58 in the direction of arrow B2, and a first connection surface 58e connecting the first outer end surface 58a and the first inner end surface 58d. including.

  The first base 58 is configured such that the width of the stator core 16 in the radial direction (arrow B direction) becomes narrower toward the side opposite to the side where the second wiring portion 54 is located (arrow C1 direction). . That is, the first inner end surface 58d is not parallel to the first outer end surface 58a, and gradually becomes narrower along the direction of the arrow C1 toward the first connection surface 58e.

  The second base 60 is formed in a shape that is slightly larger than the first base 58, and is formed at the end of the second base 60 in the arrow B1 direction and extends along the arrow C direction. Two outer end surfaces 60a, a second curved surface 60b continuous with the second outer end surface 60a and gently curved toward the upper winding portion main body 42a, and continuous with the second curved surface 60b and connected to the second wiring portion 54 The second guide surface 60c facing each other, the second inner end surface 60d formed at the end of the second base 60 in the direction of the arrow B2 connected to the second guide surface 60c, the second outer end surface 60a and the second inner end surface And a second connection surface 60e that connects to 60d.

  As shown in FIGS. 4 and 5, the first guide surface 58c and the second guide surface 60c, the first inner end surface 58d and the second inner end surface 60d, and the first connection surface 58e and the second connection surface 60e are respectively integrated. To form a flat surface. In addition, the second base portion 60 protrudes in the arrow B1 direction and is formed larger in the arrow A direction than the first base portion 58.

  The first base 58, the second base 60, and the support plate 50 are formed with insertion holes 62 that extend in the direction of arrow A and correspond to the through holes 36 of the split iron core 24. The insertion hole 62 opens at a position close to the first curved surface 58b on the upper surface of the first base 58.

  The insulator 26 and the split iron core 24 pass the bolt 28 from above through the through hole 36 with the magnetic pole portion 24b of the split iron core 24 inserted in the hole 48 of the insulator 26, and, for example, into the holder 12 It is fixed by tightening. Thereby, fixation of several metal plates 22 and fixing of the insulator 26 and the division | segmentation iron core 24 can be performed simultaneously.

  Note that the tightening portion of the bolt 28 is not limited to the holder 12. For example, the bolt 28 may be directly tightened to a mission case (not shown). In this case, since the holder 12 can be omitted, it is possible to reduce the member cost of the rotating electrical machine and to save space.

  The first wiring portion 52 includes a first extending plate 64 extending in the arrow B1 direction from the upper end portion of the first outer end surface 58a of the first base portion 58, and a second extending portion 60a of the second base portion 60 in the arrow B1 direction. A second to fifth extending plate 66, 68, 70, 72 that extends and is parallel to the first extending plate 64, and a protrusion that protrudes in the direction of arrow B2 from the lower end portion of the second inner end surface 60d of the second base 60 And a portion 74.

  The first extending plate 64 protrudes from the second base 60 in the direction of the arrow B1. Of the lower surface of the first extending plate 64, an end portion in the direction of the arrow B1 protrudes downward and is formed in a substantially rectangular parallelepiped shape, and a second lower than the first lower stopper portion 76a. A second lower stopper portion 78a is formed that is spaced apart from the wiring portion 54 (in the direction of arrow C2) and protrudes downward.

  The first lower stopper portion 76a extends from the end portion of the first extending plate 64 in the arrow C1 direction toward the arrow C2 direction. Note that the end of the first lower stopper portion 76 a in the direction of the arrow C <b> 1 is slightly rounded according to the shape of the first extending plate 64. The length of the first lower stopper portion 76a in the direction of arrow C is set to about half the length of the first extending plate 64 in the direction of arrow C. The first lower stopper portion 76 a has a length (width) in the direction of arrow B wider than the thickness of the first extension plate 64, and a length (height) in the direction of arrow A of the first extension plate 64. Is set lower than the plate thickness.

  The second lower stopper portion 78a is formed in a quadrangular shape (see FIG. 8) when viewed from above, and is positioned slightly closer to the arrow C2 direction than the center of the first extending plate 64 in the arrow C direction.

  The second lower stopper portion 78a has a length shorter than the length of the first lower stopper portion 76a, and the width and height are set to be substantially the same as the width and height of the first lower stopper portion 76a. The spacing between the first lower stopper portion 76a and the second lower stopper portion 78a is set to be larger than the thickness d1 of the neutral point terminal portion 30 (see FIG. 2).

  A first groove 80 a is formed on the lower surface of the first extension plate 64 so as to cross the first extension plate 64 along the direction of arrow C. The first groove portion 80a is adjacent to the first lower stopper portion 76a and the second lower stopper portion 78a. The first groove portion 80a is formed in a U-shaped cross section, the groove depth (length in the direction of arrow A) is substantially the same as the height of the first lower stopper portion 76a, and the groove width (length in the direction of arrow B). ) Is set narrower than the width of the first lower stopper portion 76a.

  The second extending plate 66 is connected to the upper end portion of the second base portion 60. As a result, the upper surface of the second extending plate 66 and the upper surface of the second base portion 60 are integrated to form a flat surface.

  A first upper stopper portion 82a that protrudes upward and is formed in a substantially rectangular parallelepiped shape at the end of the upper surface of the second extending plate 66 in the direction of the arrow B1, and an arrow C2 that is longer than the first upper stopper portion 82a. A second upper stopper portion 84a that is spaced apart in the direction and protrudes upward is formed.

  The first upper stopper portion 82a has a shape obtained by vertically inverting the first lower stopper portion 76a, and is disposed to face the first lower stopper portion 76a. That is, the length, width, and height of the first upper stopper portion 82a are set to be the same as the length, width, and height of the first lower stopper portion 76a.

  The second upper stopper portion 84a has a shape obtained by vertically inverting the second lower stopper portion 78a, and is disposed to face the second lower stopper portion 78a. That is, the length, width, and height of the second upper stopper portion 84a are set to be the same as the length, width, and height of the second lower stopper portion 78a.

  The lower surface of the first extension plate 64 and the upper surface of the second base portion 60 terminate at the first outer end surface 58 a of the first base portion 58. As a result, the first storage groove 86a is formed by the lower surface of the first extending plate 64, the upper surface of the second extending plate 66, the upper surface of the second base 60, and the first outer end surface 58a. The neutral point terminal portion 30 is stored in the first storage groove 86a.

  The groove width of the first storage groove 86a (the distance between the portion of the lower surface of the first extending plate 64 located in the direction of the arrow B2 relative to the first groove portion 80a and the upper surface of the second base portion 60) L1 is for neutral points It is set wider than the lateral width d2 of the terminal unit 30. The depth L2 of the first storage groove 86a (distance from the end surface of the first lower stopper portion 76a in the direction of arrow B2 to the first outer end surface 58a) L2 is 9 when the neutral point terminal 30 is 9 along the direction of arrow C. It is set to a size that allows individual placement.

  The interval L3 between the first lower stopper portion 76a and the first upper stopper portion 82a is set to be narrower than the lateral width d2 of the neutral point terminal portion 30. The interval between the second lower stopper portion 78a and the second upper stopper portion 84a is set to be substantially the same as the interval L3.

  Of the lower surface of the second extending plate 66, the end in the direction of the arrow B1 is located on the opposite side (back side or lower side) of the first upper stopper portion 82a of the second extending plate 66, and the first lower plate The first lower stopper portion 76b configured in the same shape as the stopper portion 76a, the first lower stopper portion 76b is located farther in the direction of the arrow C2 than the first lower stopper portion 76b, and has the same shape as the second lower stopper portion 78a A second lower stopper portion 78b configured as described above is formed.

  The spacing distance between the first lower stopper portion 76b and the second lower stopper portion 78b is set to be approximately twice the spacing distance between the first upper stopper portion 82a and the second upper stopper portion 84a. The second lower stopper portion 78b is located in the vicinity of the end portion of the second extending plate 66 in the arrow C2 direction.

  A second groove portion 80b is formed on the lower surface of the second extending plate 66 so as to cross the second extending plate 66 along the arrow C direction. The second groove portion 80b is adjacent to the first lower stopper portion 76b and the second lower stopper portion 78b. The second groove part 80b has the same shape as the first groove part 80a.

  The third extending plate 68 is disposed below the second extending plate 66 by a predetermined distance. The predetermined distance is set larger than the lateral width d2 of the input terminal unit 20U.

  Of the upper surface of the third extending plate 68, the end in the arrow B1 direction is opposed to the first lower stopper portion 76b and is configured in the same shape as the first upper stopper portion 82a. 82b and the first upper stopper portion 82b are spaced apart from each other in the direction of the arrow C2 and are opposed to the second lower stopper portion 78b, and have the same shape as the second upper stopper portion 84a. In addition, a second upper stopper portion 84b is formed.

  The lower surface of the second extending plate 66 and the upper surface of the third extending plate 68 terminate at the second outer end surface 60 a of the second base 60. As a result, the second storage groove 86b is formed by the lower surface of the second extending plate 66, the upper surface of the third extending plate 68, and the second outer end surface 60a. The input terminal portion 20U is stored in the second storage groove 86b.

  The groove width of the second storage groove 86b (the distance between the portion of the lower surface of the second extending plate 66 located in the direction of the arrow B2 relative to the second groove portion 80b and the upper surface of the third extending plate 68) is the first storage. It is set to be the same as the groove width L1 of the groove 86a. The groove depth of the second storage groove 86b (distance from the end surface in the arrow B2 direction of the first lower stopper portion 76b to the second outer end surface 60a) L4 is three input terminal portions 20U arranged along the arrow C direction. It is set as large as possible.

  The interval between the first lower stopper portion 76b and the first upper stopper portion 82b and the interval between the second lower stopper portion 78b and the second upper stopper portion 84b are set to be substantially the same as the interval L3. .

  A first lower end of the third extending plate 68 is positioned on the opposite side of the first upper stopper portion 82b at the end in the direction of the arrow B1 and is configured in the same shape as the first lower stopper portion 76a. The lower stopper portion 76c is positioned away from the first lower stopper portion 76c in the direction of the arrow C2, is located on the opposite side of the second upper stopper portion 84b, and has the same shape as the second lower stopper portion 78a. The second lower stopper portion 78c configured as described above is formed.

  A third groove 80 c is formed on the lower surface of the third extension plate 68 so as to cross the third extension plate 68 along the direction of arrow C. The third groove portion 80c is adjacent to the first lower stopper portion 76c and the second lower stopper portion 78c. The third groove part 80c has the same shape as the first groove part 80a.

  The fourth extension plate 70 is positioned below the third extension plate 68 by a predetermined distance. The predetermined distance is set to the same distance as the separation interval between the second extending plate 66 and the third extending plate 68.

  Of the upper surface of the fourth extending plate 70, an end portion in the direction of the arrow B1 faces the first lower stopper portion 76c and is configured in the same shape as the first upper stopper portion 82a. 82c and the first upper stopper portion 82c are spaced apart from each other in the direction of the arrow C2 and are opposed to the second lower stopper portion 78c, and are configured in the same shape as the second upper stopper portion 84a. In addition, a second upper stopper portion 84c is formed.

  The lower surface of the third extending plate 68 and the upper surface of the fourth extending plate 70 terminate at the second outer end surface 60 a of the second base 60. As a result, a third storage groove 86c is formed by the lower surface of the third extending plate 68, the upper surface of the fourth extending plate 70, and the second outer end surface 60a. The input terminal portion 20V is stored in the third storage groove 86c.

  The groove width of the third storage groove 86c (the distance between the portion of the lower surface of the third extending plate 68 located in the direction of the arrow B2 relative to the third groove portion 80c and the upper surface of the fourth extended plate 70) is the first storage. It is set to be the same as the groove width L1 of the groove 86a. The groove depth of the third storage groove 86c (the distance from the end surface in the arrow B2 direction of the first lower stopper portion 76c to the second outer end surface 60a) is set to be the same as the groove depth L4 of the second storage groove 86b. Yes. The interval between the first lower stopper portion 76c and the first upper stopper portion 82c and the interval between the second lower stopper portion 78c and the second upper stopper portion 84c are set to be substantially the same as the interval L3. .

  A first lower end of the fourth extending plate 70 is positioned on the opposite side of the first upper stopper portion 82c at the end in the direction of the arrow B1 and is configured in the same shape as the first lower stopper portion 76a. The lower stopper portion 76d and the first lower stopper portion 76d are spaced apart from each other in the direction of the arrow C2 and located on the opposite side of the second upper stopper portion 84c, and have the same shape as the second lower stopper portion 78a The second lower stopper portion 78d configured as described above is formed.

  A fourth groove 80d is formed on the lower surface of the fourth extending plate 70 so as to cross the fourth extending plate 70 along the arrow C direction. The fourth groove portion 80d is adjacent to the first lower stopper portion 76d and the second lower stopper portion 78d. The fourth groove part 80d has the same shape as the first groove part 80a.

  The fifth extending plate 72 is connected to the lower end portion of the second base portion 60. Note that the separation interval between the fourth extension plate 70 and the fifth extension plate 72 is set to be the same as the separation interval between the third extension plate 68 and the fourth extension plate 70.

  Of the upper surface of the fifth extension plate 72, the end in the direction of the arrow B1 faces the first lower stopper portion 76d and is configured in the same shape as the first upper stopper portion 82a. 82d, the first upper stopper portion 82d is positioned in the direction of the arrow C2 and is opposed to the second lower stopper portion 78d, and has the same shape as the second upper stopper portion 84a. And a second upper stopper portion 84d.

  The lower surface of the fourth extending plate 70 and the upper surface of the fifth extending plate 72 terminate at the second outer end surface 60 a of the second base 60. As a result, the fourth housing groove 86d is formed by the lower surface of the fourth extending plate 70, the upper surface of the fifth extending plate 72, and the second outer end surface 60a. The input terminal portion 20W is stored in the fourth storage groove 86d.

  The groove width of the fourth storage groove 86d (the distance between the portion of the lower surface of the fourth extending plate 70 located in the direction of the arrow B2 relative to the fourth groove portion 80d and the upper surface of the fifth extending plate 72) is the first storage. It is set to be the same as the groove width L1 of the groove 86a. The groove depth of the fourth storage groove 86d (the distance from the end surface in the arrow B2 direction of the first lower stopper portion 76d to the second outer end surface 60a) is set to be the same as the groove depth L4 of the second storage groove 86b. Yes. The interval between the first lower stopper portion 76d and the first upper stopper portion 82d and the interval between the second lower stopper portion 78d and the second upper stopper portion 84d are set to be substantially the same as the interval L3. .

  The projecting portion 74 has a bottom portion 88 extending from the lower end portion of the second inner end surface 60d along the arrow B2 direction, and a side portion 90 erected at the end portion of the bottom portion 88 in the arrow B2 direction ( (See FIG. 9). The upper end surface 88a of the bottom portion 88 is gradually inclined downward with respect to the arrow B direction toward the side portion 90.

  Further, the side portion 90 extends from the end portion of the bottom portion 88 in the arrow C1 direction to a position in the middle of the bottom portion 88 and has a tapered shape toward the arrow C2 direction. That is, the upper end surface 88a of the bottom 88 is smoothly connected to the upper surface of the upper winding body 42a.

  The second inner end surface 60d and the inner side surface (side surface in the direction of arrow B1) 90a of the side portion 90 terminate at the upper end surface 88a of the bottom portion 88. As a result, the side groove 92 is formed by the second inner end surface 60d, the upper end surface 88a, and the inner side surface 90a. The groove width of the side groove 92 is set to be larger than the lateral width d2 of the neutral point terminal portion 30.

  As shown in FIGS. 6 to 8, the second wiring part 54 is disposed on the upper surface of the first base 94 and the support plate 50 that are substantially rectangular in top view, and is connected to the lower surface of the first base 94. The second base 96 has a substantially square shape when viewed from above.

  In the direction of arrow A, the height of the first base 94 corresponds to the height of the first base 58, and the height of the second base 96 corresponds to the height of the second base 60 (see FIG. 3).

  The first base portion 94 is formed at the end portion of the first base portion 94 and extends along the direction of arrow C. The first base portion 94 is continuous with the first outer end surface 94a and faces the first wiring portion 52. A first guide surface 94b, a first inner end surface 94c connected to the first guide surface 94b and formed at the end of the first base portion 94 in the direction of arrow B2, the first outer end surface 94a and the first inner surface A first connection surface 94d connecting the end surface 94c.

  The second base 96 is configured to have a shape that is slightly larger than the first base 94, and is formed at the end of the second base 96 and extends along the arrow C direction. A second guide surface 96b continuous with the second outer end surface 96a and facing the first wiring portion 52, and a second guide surface 96b connected to the second guide surface 96b and formed at the end of the second base 96 in the direction of the arrow B2. 2 an inner end face 96c, and a second connecting face 96d connecting the second outer end face 96a and the second inner end face 96c.

  The first guide surface 94b and the second guide surface 96b, the first inner end surface 94c and the second inner end surface 96c, and the first connection surface 94d and the second connection surface 96d are integrally connected to form a flat surface. is doing. That is, the second base portion 96 protrudes in the arrow B1 direction and is formed larger in the arrow A direction than the first base portion 94. The first and second guide surfaces 94b and 96b are formed with a recess 98 having the same shape as the fitting recess 32 of the yoke portion 24a of the divided core 24 described above.

  The second wiring portion 54 includes a first extending plate 100 extending in the arrow B1 direction from the upper end portion of the first outer end surface 94a of the first base portion 94, and an arrow B1 direction from the second outer end surface 96a of the second base portion 96. It further has second to fifth extension plates 102, 104, 106, 108 that extend and are parallel to the first extension plate 100.

  In the direction of arrow A, the first extension plate 100 is at the position of the first extension plate 64, the second extension plate 102 is at the position of the second extension plate 66, and the third extension plate 104 is at the third extension. The fourth extending plate 106 is formed at the position of the plate 68, the fifth extending plate 108 is formed at the position of the fifth extending plate 72, and the fifth extending plate 108 is formed at the position of the fifth extending plate 72.

  The first extending plate 100 projects from the second base 96 in the direction of the arrow B1. Of the lower surface of the first extension plate 100, at the end in the arrow B1 direction, the first lower stopper portion 110a protruding downward, and located farther in the arrow C2 direction than the first lower stopper portion 110a, And the 2nd lower stopper part 112a which protrudes below is formed.

  The first lower stopper portion 110a is located slightly closer to the arrow C1 direction than the center of the first extending plate 100 in the arrow C direction, and the second lower stopper portion 112a is the arrow C2 of the first extending plate 100. Located at the end of the direction. The first and second lower stopper portions 110 a and 112 a have the same shape as the second lower stopper portion 78 a of the first wiring portion 52.

  The spacing between the first lower stopper portion 110a and the second lower stopper portion 112a is set to be larger than the thickness d1 of the neutral point terminal portion 30 (see FIG. 2).

  Further, a first groove 114 a is formed on the lower surface of the first extension plate 100 so as to cross the first extension plate 100 along the direction of arrow C. The first groove 114a is adjacent to the first lower stopper portion 110a and the second lower stopper portion 112a. The first groove part 114 a has the same shape as the first groove part 80 a of the first wiring part 52.

  The second extending plate 102 is connected to the upper end portion of the second base portion 96. As a result, the upper surface of the second extending plate 102 and the upper surface of the second base 96 are integrated to form a flat surface.

  The end of the upper surface of the second extension plate 102 in the direction of the arrow B1 is configured to face the first lower stopper portion 110a and have the same shape as the second upper stopper portion 84a of the first wiring portion 52. The first upper stopper portion 116a, the first upper stopper portion 116a, the second upper stopper portion 116a, and the first upper stopper portion 116a. A second upper stopper portion 118a configured in the same shape is formed.

  The lower surface of the first extension plate 100 and the upper surface of the second base portion 96 terminate at the first outer end surface 94 a of the first base portion 94. As a result, the first storage groove 120a is formed by the lower surface of the first extending plate 100, the upper surface of the second extending plate 102, the upper surface of the second base 96, and the first outer end surface 94a. Then, the neutral point terminal portion 30 is stored in the first storage groove 120a.

  The groove width of the first storage groove 120a (the distance between the portion of the lower surface of the first extending plate 100 located in the direction of the arrow B2 relative to the first groove portion 114a and the upper surface of the second base portion 96) L5 is the first wiring portion. 52 is set to be the same as the groove width L1 of the first storage groove 86a. The groove depth of the first storage groove 120a (the distance from the end surface of the first lower stopper portion 110a in the direction of arrow B2 to the first outer end surface 94a) L6 is the groove depth of the first storage groove 86a of the first wiring portion 52. It is set the same as L2.

  The interval L7 between the first lower stopper portion 110a and the first upper stopper portion 116a is set to be narrower than the lateral width d2 of the neutral point terminal portion 30. The interval between the second lower stopper portion 112a and the second upper stopper portion 118a is set to be substantially the same as the interval L7.

  Of the lower surface of the second extending plate 102, the end in the direction of the arrow B1 is located on the opposite side of the first upper stopper portion 116a of the second extending plate 102 and is the same as the first lower stopper portion 110a. A first lower stopper portion 110b configured in a shape, and located farther in the direction of the arrow C2 than the first lower stopper portion 110b and located on the opposite side of the second upper stopper portion 118a, and the second lower stopper portion 110b A second lower stopper portion 112b configured in the same shape as the stopper portion 112a is formed.

  A second groove 114b is formed on the lower surface of the second extending plate 102 so as to cross the second extending plate 102 along the arrow C direction. The second groove portion 114b is adjacent to the first lower stopper portion 110b and the second lower stopper portion 112b. The second groove 114b has the same shape as the first groove 114a.

  The third extending plate 104 is disposed below the second extending plate 102 by a predetermined distance. The predetermined interval is set larger than the lateral width d2 of the input terminal portion 20U.

  A first upper stopper portion that is opposite to the first lower stopper portion 110b and has the same shape as the first upper stopper portion 116a at the end in the arrow B1 direction on the upper surface of the third extending plate 104. 116b and the first upper stopper portion 116b are spaced apart from each other in the direction of the arrow C2 and are opposed to the second lower stopper portion 112b, and have the same shape as the second upper stopper portion 118a. And a second upper stopper portion 118b.

  The lower surface of the second extending plate 102 and the upper surface of the third extending plate 104 terminate at the second outer end surface 96 a of the second base 96. As a result, the second storage groove 120b is formed by the lower surface of the second extending plate 102, the upper surface of the third extending plate 104, and the second outer end surface 96a. The input terminal portion 20U is stored in the second storage groove 120b.

  The groove width of the second storage groove 120b (the distance between the portion of the lower surface of the second extending plate 102 located in the direction of the arrow B2 relative to the second groove portion 114b and the upper surface of the third extending plate 104) is the first storage. It is set to be the same as the groove width L5 of the groove 120a. The groove depth of the second storage groove 120b (distance from the end surface in the arrow B2 direction of the first lower stopper portion 110b to the second outer end surface 120a) L8 is the groove depth of the second storage groove 86b of the first wiring portion 52. It is set the same as L4.

  The interval between the first lower stopper portion 110b and the first upper stopper portion 116b and the interval between the second lower stopper portion 112b and the second upper stopper portion 118b are set to be the same as the interval L7.

  A first lower end of the third extending plate 104 is located at the end in the direction of arrow B1 on the opposite side of the first upper stopper 116b and is configured in the same shape as the first lower stopper 110a. The lower stopper portion 110c is located farther in the direction of the arrow C2 than the first lower stopper portion 110c, is located on the opposite side of the second upper stopper portion 118b, and has the same shape as the second lower stopper portion 112a A second lower stopper portion 112c configured as described above is formed.

  A third groove 114c is formed on the lower surface of the third extending plate 104 so as to cross the third extending plate 104 along the arrow C direction. The third groove portion 114c is adjacent to the first lower stopper portion 110c and the second lower stopper portion 112c. The third groove 114c has the same shape as the first groove 114a.

  The fourth extending plate 106 is positioned below the third extending plate 104 by a predetermined distance. The predetermined distance is set to the same distance as the separation interval between the second extending plate 102 and the third extending plate 104.

  A first upper stopper portion that is opposite to the first lower stopper portion 110c and has the same shape as the first upper stopper portion 116a at the end in the arrow B1 direction on the upper surface of the fourth extending plate 106. 116c and the first upper stopper portion 116c are spaced apart from each other in the direction of the arrow C2 and are opposed to the second lower stopper portion 112c, and have the same shape as the second upper stopper portion 118a. In addition, a second upper stopper portion 118c is formed.

  The lower surface of the third extending plate 106 and the upper surface of the fourth extending plate 108 terminate at the second outer end surface 96 a of the second base 96. As a result, the third storage groove 120c is formed by the lower surface of the third extending plate 104, the upper surface of the fourth extending plate 106, and the second outer end surface 96a. And the terminal part 20V for input will be accommodated in this 3rd accommodation groove | channel 120c.

  The groove width of the third storage groove 120c (the distance between the portion of the lower surface of the third extending plate 104 located in the direction of the arrow B2 relative to the third groove portion 114c and the upper surface of the fourth extended plate 106) is the first storage. It is set to be the same as the groove width L5 of the groove 120a. The groove depth of the third storage groove 120c (the distance from the end surface in the arrow B2 direction of the first lower stopper portion 110c to the second outer end surface 96a) is set to be the same as the groove depth L8 of the second storage groove 120b. Yes. The interval between the first lower stopper portion 110c and the first upper stopper portion 116c and the interval between the second lower stopper portion 112c and the second upper stopper portion 118c are set to be the same as the interval L7.

  A first lower end of the fourth extending plate 106 is positioned on the opposite side of the first upper stopper 116c at the end in the direction of the arrow B1 and is configured in the same shape as the first lower stopper 110a. The lower stopper portion 110d is located farther in the direction of the arrow C2 than the first lower stopper portion 110d, is located on the opposite side of the second upper stopper portion 118c, and has the same shape as the second lower stopper portion 112a The second lower stopper portion 112d configured as described above is formed.

  A fourth groove 114d is formed on the lower surface of the fourth extending plate 106 so as to cross the fourth extending plate 106 along the arrow C direction. The fourth groove portion 114d is adjacent to the first lower stopper portion 110d and the second lower stopper portion 112d. The fourth groove portion 114d has the same shape as the first groove portion 114a.

  The fifth extending plate 108 is connected to the lower end portion of the second base portion 96. Note that the separation interval between the fourth extension plate 106 and the fifth extension plate 108 is set to be the same as the separation interval between the third extension plate 104 and the fourth extension plate 106.

  A first upper stopper portion that is opposite to the first lower stopper portion 110d and has the same shape as the first upper stopper portion 116a at the end in the arrow B1 direction on the upper surface of the fifth extending plate 108. 116d and the first upper stopper portion 116d are spaced apart from each other in the direction of the arrow C2 and are opposed to the second lower stopper portion 112d, and have the same shape as the second upper stopper portion 118a. A second upper stopper portion 118d is formed.

  The lower surface of the fourth extending plate 106 and the upper surface of the fifth extending plate 108 terminate at the second outer end surface 96 a of the second base 96. As a result, the fourth housing groove 120d is formed by the lower surface of the fourth extending plate 106, the upper surface of the fifth extending plate 108, and the second outer end surface 96a. Then, the input terminal portion 20W is stored in the fourth storage groove 120d.

  The groove width of the fourth storage groove 120d (the distance between the portion of the lower surface of the fourth extending plate 106 positioned in the direction of the arrow B2 relative to the fourth groove portion 114d and the upper surface of the fifth extending plate 108) is the first storage. It is set to be the same as the groove width L5 of the groove 120a. The groove depth of the fourth storage groove 120d (the distance from the end surface in the arrow B2 direction of the first lower stopper portion 110d to the second outer end surface 96a) is set to be the same as the groove depth L8 of the second storage groove 120b. Yes. The interval between the first lower stopper portion 110d and the first upper stopper portion 116d and the interval between the second lower stopper portion 112d and the second upper stopper portion 118d are set to be the same as the interval L7.

  As can be understood from FIG. 2, the coil 18 of the split core portion 14 is formed by winding the coil wire 18 a around the winding portion 38 of the insulator 26. That is, as shown in FIG. 8, the coil 18 is formed by winding the coil wire 18 a around the winding portion 38 in a state where a part of the neutral point terminal portion 30 is disposed in the side groove 92. .

  Thereby, it can prevent that the terminal part 30 for neutral points becomes obstructive during the winding operation | work of the coil strand 18a. The coil wire 18a may be wound by winding the coil wire 18a around the winding portion 38 with the insulator 26 fixed, or by rotating the insulator 26 with a rotating jig (not shown). The wire 18a may be wound around the winding portion 38.

  When the winding operation of the coil wire 18a is completed, the neutral point terminal portion 30 and the input terminal portion 20 are positioned in the arrow B1 direction with respect to the winding portion 38. Therefore, in the next step, the neutral point terminal portion 30 can be easily guided to the first storage grooves 86a and 120a, and the input terminal portion 20 is connected to the second to fourth storage grooves 86b to 86d and 120b to 120d. Can be easily guided to.

  Next, an assembly procedure of the plurality of divided core portions 14 described above will be described.

  First, as shown in FIGS. 9 and 10, in the nine divided core portions 14, the neutral point terminal portions 30 disposed in the side grooves 92 are connected to the first wiring portion 52 and the second wiring portion 54. The first guide surface 58c and the first curved surface 58b of the first wiring part 52 are slid through the gap 56 between the first storage groove 86a and the neutral point guided to the first storage groove 86a. The terminal portion 30 is disposed outside the insulator 26 through the first lower stopper portion 76a and the second lower stopper portion 78a and between the first upper stopper portion 82a and the second upper stopper portion 84a. .

  In the nine divided core portions 14 (having the U1-phase to U3-phase coils 18) of the nine divided core portions 14, the input terminal portion 20U is connected to the second guide surface via the gap 56. The input terminal 20U guided to the second storage groove 86b is guided to the second storage groove 86b while sliding relative to the second storage surface 86b and the second curved surface 60b. It arrange | positions on the outer side of the insulator 26 via between the part 78b and between the 1st upper stopper part 82b and the 2nd upper stopper part 84b.

  Furthermore, although detailed illustration is omitted, in the three divided core portions 14 (having the V1 phase to V3 phase coils 18) of the nine divided core portions 14, the input terminal portion 20V is connected to the gap. 56, and is guided to the third storage groove 86c while sliding with respect to the second guide surface 60c and the second curved surface 60b via 56, and the input terminal portion 20V guided to the third storage groove 86c is It arrange | positions on the outer side of the insulator 26 via between the stopper part 76c and the 2nd lower stopper part 78c, and between the 1st upper stopper part 82c and the 2nd upper stopper part 84c.

  Among the nine divided core portions 14, in the three divided core portions 14 (having the W1 phase, W2 phase, and W6 phase coils 18), the input terminal portion 20 </ b> W is connected to the second guide via the gap 56. The input terminal portion 20W guided to the fourth storage groove 86d is guided to the fourth storage groove 86d while sliding with respect to the surface 60c and the second curved surface 60b. It arrange | positions on the outer side of the insulator 26 via between the stopper parts 78d, and between the 1st upper stopper part 82d and the 2nd upper stopper part 84d.

  Further, in the nine divided core portions 14 different from the nine divided core portions 14, the neutral point terminal portions 30 arranged in the side grooves 92 are replaced by the first wiring portion 52 and the second wiring portion 54. The first guide surface 94b of the second wiring portion 54 is slid through the gap 56 between the first storage groove 120a and the neutral point terminal portion 30 guided to the first storage groove 120a. Are disposed outside the insulator 26 via the space between the first lower stopper portion 110a and the second lower stopper portion 112a and the space between the first upper stopper portion 116b and the second upper stopper portion 118a.

  Then, among the other nine divided core portions 14, in the three divided core portions 14 (having the U4 phase to U6 phase coils 18), the input terminal portion 20 </ b> U is connected to the second through the gap 56. The input terminal portion 20U guided to the second storage groove 120b is guided between the first lower stopper portion 110b and the second lower stopper portion 112b while being guided to the second storage groove 120b while sliding with respect to the guide surface 96b. And between the first upper stopper part 116b and the second upper stopper part 118b.

  Among the other nine divided core portions 14, in the three divided core portions 14 (having the V4 phase to V6 phase coils 18), the input terminal portion 20 </ b> V is connected to the second guide surface via the gap 56. 96d and guided to the third storage groove 120c while sliding the input terminal portion 20V guided to the third storage groove 120c between the first lower stopper portion 110c and the second lower stopper portion 112c, It arrange | positions on the outer side of the insulator 26 via between the 1st upper stopper part 116c and the 2nd upper stopper part 118c.

  Among the other nine divided core portions 14, in the three divided core portions 14 (having the W3-phase to W5-phase coils 18), the input terminal portion 20W is connected to the second guide surface via the gap 56. 96d and guided to the fourth storage groove 120d while sliding the input terminal portion 20W guided to the fourth storage groove 120d between the first lower stopper portion 110d and the second lower stopper portion 112d, It arrange | positions on the outer side of the insulator 26 via between the 1st upper stopper part 116d and the 2nd upper stopper part 118d.

  After that, as shown in FIG. 11, first, the split core portion 14 having the U1-phase coil 18 is arranged along the inner peripheral surface 12 a of the holder 12. Subsequently, the split core portion 14 having the V1-phase coil 18 is lowered from above to the left side of the split core portion 14 having the U1-phase coil 18, and the yoke portion 24a of the split core portion 14 having the V1-phase coil 18 is used. The fitting convex portion 34 is inserted into the fitting concave portion 32 of the yoke portion 24 a through the concave portion 98 of the second wiring portion 54 of the split core portion 14 having the U1 phase coil 18. Accordingly, the split core portion 14 having the V1-phase coil 18 is positioned with respect to the split core portion 14 having the U1-phase coil 18.

  At this time, as described above, since the neutral point terminal unit 30 and the input terminal unit 20V are arranged outside the insulator 26, the neutral point terminal unit 30 and the input terminal unit 20V. Can be suitably prevented from interfering with the split core portion 14 having the U1-phase coil 18.

  The neutral point terminal portion 30 is inserted between the first lower stopper portion 76a and the second lower stopper portion 78a and between the first upper stopper portion 82a and the second upper stopper portion 84a, and is used as an input terminal. Since the portion 20V is inserted between the first lower stopper portion 76c and the second lower stopper portion 78c and between the first upper stopper portion 82c and the second upper stopper portion 84c, it has the V1-phase coil 18. When the split core portion 14 is arranged, the neutral point terminal portion 30 and the input terminal portion 20V are hardly shaken in the direction of the arrow C.

  Subsequently, the split core portion 14 having the W1 phase coil 18 is arranged on the left side of the split core portion 14 having the V1 phase coil 18 in the same manner as when the split core portion 14 having the V1 phase coil 18 is arranged. To do. As a result, the U1-phase coil 18, the V1-phase coil 18, and the W1-phase coil 18 are arranged in a counterclockwise direction.

  Then, by repeating such an operation six times, 18 divided core portions 14 are arranged in a ring shape. As shown in FIG. 1, the coils 18 of the plurality of divided core portions 14 arranged in this way are U1 phase, V1 phase, W1 phase, U2 phase, V2 phase, W2 phase... U6 phase, They are arranged in the order of the V6 phase and the W6 phase.

  Subsequently, the neutral point terminal portion 30 is routed to the first housing grooves 86a and 120a of the plurality of divided core portions 14 to be electrically connected to the neutral terminal N, and the U-phase input terminal portion 20U is connected to the plurality of terminal portions 20U. The V-phase input terminal portion 20V is routed to the third storage grooves 82c and 120c of the plurality of split core portions 14 by being routed to the second storage grooves 86b and 120b of the split core portion 14 and electrically connected to the input terminal U. The W-phase input terminal portion 20W is routed around the fourth housing grooves 86d and 120d of the plurality of divided core portions 14 and electrically connected to the input terminal W.

  Although not shown in detail, in this embodiment, the neutral point terminal 30 and the input of the coil 18 of the U1 phase to U3 phase, the V1 phase to V3 phase, the W1 phase, the W2 phase, and the W6 phase are input. The terminal part 20 for the cable is routed counterclockwise, and the terminal part 30 for the neutral point and the input terminal part 20 for the coil 18 of the U4 phase to U6 phase, the V4 phase to V6 phase, and the W3 phase to W6 phase are rotated clockwise. Have been routed to.

  Here, as a specific example, the routing operation of the neutral point terminal unit 30 and the input terminal unit 20U of the U1-phase coil 18 will be described.

  First, the end of the first wiring plate 52 in the direction of the arrow B1 of the first extension plate 64 is pressed upward, and the portion of the first extension plate 64 where the first groove 80a is located (thin portion) is elastic. By deforming, the opening area of the first storage groove 86a in the direction of arrow B1 is expanded. Then, in a state where the opening area of the first storage groove 86a is widened, the neutral point terminal portion 30 is placed between the first lower stopper portion 76a and the first outer end surface 58a and between the first upper stopper portion 82a and the first outer end portion 58a. It is inserted between the end faces 58a. Thereby, it can suppress that the terminal part 30 for neutral points interferes with the 1st lower stopper part 76a and the 1st upper stopper part 82a.

  At this time, the first extending plate 64 is not elastically deformed, and the end portion of the second extending plate 66 in the direction of the arrow B1 is pressed downward, so that the second extending plate 66 has a second groove 80b. The opening area of the first storage groove 86a in the direction of the arrow B1 may be expanded by elastically deforming the portion (thin portion) where is located. Furthermore, both the first extending plate 64 and the second extending plate 66 can be elastically deformed to increase the opening area.

  Subsequently, in the same manner, the first housing groove 120a of the second wiring portion 54 of the split core portion 14 having the W6 phase coil 18, the first housing groove 86a of the first wiring portion 52, and the V6 phase The neutral point terminal portion 30 is routed around the first receiving groove 120a of the second wiring portion 54 of the split core portion 14 having the coil 18 and is electrically connected to the neutral terminal N.

  Further, the end of the second wiring plate 66 in the arrow B1 direction of the first wiring portion 52 is pressed upward, and the portion (thin portion) where the second groove portion 80b is located in the second extending plate 66 is elastic. By deforming, the opening area of the second storage groove 86b in the direction of arrow B1 is increased. Then, with the opening area of the second storage groove 86b widened, the input terminal portion 20U is placed between the first lower stopper portion 76b and the second outer end surface 60a, and between the first upper stopper portion 82b and the second outer end surface 60a. And electrically connected to the input terminal U. Thereby, it can suppress that the terminal part 20U for input interferes with the 1st lower stopper part 76b and the 1st upper stopper part 82b.

  In the stator 10 configured as described above, as shown in FIG. 12, for example, in the second wiring portion 54 of the split core portion 14 having the V6 phase coil 18, there are nine in the first storage groove 120 a. The neutral point terminal 30 includes three input terminal portions 20U in the second storage groove 120b, three input terminal portions 20V in the third storage groove 120c, and three input terminals in the fourth storage groove 120d. Each of the input terminal units 20W is arranged.

  In the rotating electrical machine according to the present embodiment, first to fourth storage grooves 86a to 86d extending along the arrow C direction are formed on the outer end surface of the first wiring portion 52 in the arrow B1 direction, and the first storage groove 86a is formed. Of the lower surface of the first extension plate 64 as one groove side surface, the first lower stopper portion 76a is provided at the end in the arrow B1 direction, and the second extension plate as one groove side surface of the second storage groove 86b. The first lower stopper portion 76b is provided at the end in the arrow B1 direction on the lower surface of 66, and the first lower stopper portion 76b is provided at the end in the arrow B1 direction on the lower surface of the third extending plate 68 as one groove side surface of the third storage groove 86c. The first lower stopper portion 76c is formed at the end in the arrow B1 direction on the lower surface of the fourth extending plate 70 as one groove side surface of the fourth storage groove 86d.

  As a result, for example, the Lorentz force directed in the direction of the arrow B1 is input to the neutral point terminal portion 30 routed by the first storage groove 86a and the second to fourth storage grooves 86b to 86d. Even when acting on the terminal unit 20, the neutral point terminal unit 30 and the input terminal unit 20 are limited to move in the direction of the arrow B1 by the first lower stoppers 76a to 76d. It can suppress that the terminal part 30 for points and this terminal part 20 for input detach | leave from the 1st-4th storage grooves 86a-86d.

  Further, in the present embodiment, the first upper portion facing the first lower stopper portion 76a at the end in the arrow B1 direction on the upper surface of the second extending plate 66 as the other groove side surface of the first storage groove 86a. The stopper portion 82a is formed, and the interval between the first lower stopper portion 76a and the first upper stopper portion 82a is made narrower than the lateral width d2 of the neutral point terminal portion 30.

  Thereby, it is possible to reliably suppress the neutral point terminal portion 30 from being detached from the first storage groove 86a by the Lorentz force.

  Further, in the present embodiment, the first upper portion facing the first lower stopper portion 76b at the end in the arrow B1 direction on the upper surface of the third extending plate 68 as the other groove side surface of the second storage groove 86b. The stopper portion 82b is formed, and the distance between the first lower stopper portion 76b and the first upper stopper portion 82b is narrower than the lateral width d2 of the input terminal portion 20U.

  Accordingly, it is possible to reliably suppress the input terminal portion 20U from being detached from the second storage groove 86b by the Lorentz force.

  Furthermore, in the present embodiment, the first upper surface of the fourth extending plate 70 as the other groove side surface of the third storage groove 86c is opposed to the first lower stopper portion 76c at the end in the arrow B1 direction. The upper stopper portion 82c is formed, and the distance between the first lower stopper portion 76c and the first upper stopper portion 82c is narrower than the lateral width d2 of the input terminal portion 20V.

  Accordingly, it is possible to reliably prevent the input terminal portion 20V from being detached from the third storage groove 86c by the Lorentz force.

  In the present embodiment, the first upper portion facing the first lower stopper portion 76d at the end in the arrow B1 direction on the upper surface of the fifth extending plate 72 as the other groove side surface of the fourth housing groove 86d. The stopper portion 82d is formed, and the distance between the first lower stopper portion 76d and the first upper stopper portion 82d is narrower than the lateral width d2 of the input terminal portion 20W.

  Accordingly, it is possible to reliably suppress the input terminal portion 20W from being detached from the fourth storage groove 86d by the Lorentz force.

  The rotating electrical machine according to the present embodiment is farther in the direction of the arrow C2 than the first lower stopper portions 76a to 76d at the end in the direction of the arrow B1 among the lower surfaces of the first to fourth extending plates 64, 66, 68, and 70. The second lower stopper portions 78a to 78d are formed at the same time, and the first upper stopper portions 82a to 82a are disposed at the end portions in the direction of the arrow B1 among the upper surfaces of the second to fifth extending plates 66, 68, 70, and 72. Since the second upper stopper portions 84a to 84d are formed so as to be spaced apart from each other in the direction of the arrow C2 than 82d and face the second lower stopper portions 78a to 78d, the neutral point terminal portion 30 and It can suppress more reliably that the terminal part 20 for input separates from the 1st-4th storage grooves 86a-86d.

  In the rotating electrical machine according to the present embodiment, the first lower stopper portions 110a to 110d, the second lower stopper portions 112a to 112d, the first upper stopper portions 116a to 116d, and the second upper stopper portions 118a to 118d Since the second wiring portion 54 is formed, the same effect as that of the first wiring portion 52 described above can be obtained also in the second wiring portion 54. That is, in the 2nd wiring part 54, it can suppress that the terminal part 30 for neutral points and the terminal part 20 for input leave | separate from the 1st-4th storage grooves 120a-120d.

  In the rotating electrical machine according to the present embodiment, the neutral point terminal portion 30 is stored in the first storage grooves 86a and 120a of the plurality of divided core portions 14, and the input terminal portion 20U is stored in the second storage of the plurality of divided core portions 14. In the grooves 86b and 120b, the input terminal portion 20V is inserted into the third storage grooves 86c and 120c of the plurality of divided core portions 14, and the input terminal portion 20W is inserted into the fourth storage grooves 86d and 120d of the plurality of divided core portions 14, respectively. Since they are routed, the neutral point terminal unit 30, the input terminal unit 20U, the input terminal unit 20V, and the input terminal unit 20W do not contact each other. Therefore, the insulation process for the neutral point terminal unit 30 and the input terminal unit 20 can be omitted.

  In the rotating electrical machine according to the present embodiment, when the neutral point terminal portion 30 and the input terminal portion 20 are routed to the first to fourth storage grooves 86a to 86d and 120a to 120d, the neutral point terminal portion 30 is provided. Therefore, it is not necessary to bend a part of the terminal part 20 and the part of the input terminal part 20 into a semicircular shape. Thereby, the production efficiency of the rotating electrical machine can be improved.

  In the said embodiment, 1st lower stopper part 76a-76d, 110a-110d, 2nd lower stopper part 78a-78d, 112a-112d, 1st upper stopper part 82a-82d, 116a-116d, and 2nd upper stopper The length, width, and height of the portions 84a to 84d and 118a to 118d can be arbitrarily set.

  For example, in the 1st wiring part 52, while extending the length of the 2nd lower stopper part 78a until it reaches the end of arrow C2 direction of the 1st extension board 64, the length of the 2nd lower stopper parts 78b-78d and The lengths of the second upper stopper portions 84a to 84d may be matched with the length of the second lower stopper portion 78a. In this case, the neutral point terminal portion 30 and the input terminal portion 20 are more difficult to separate from the first to fourth storage grooves 86a to 86d.

  Further, for example, in the second wiring portion 54, the length of the first lower stopper portion 110a is extended until reaching the end portion in the arrow C1 direction of the first extending plate 100, and the length of the first lower stopper portions 110b to 110d. The length of the first upper stopper portions 116a to 116d may be adjusted to the length of the first lower stopper portion 110a. In this case, the neutral point terminal portion 30 and the input terminal portion 20 are more difficult to separate from the first to fourth storage grooves 120a to 120d.

  The first wiring part 52 is formed so that the positions of the second lower stopper part 78a and the second upper stopper part 84a in the C direction correspond to the positions of the second lower stopper parts 78b to 78d and the second upper stopper parts 84b to 84d. May be.

  The groove depth and groove width of the first to fourth groove portions 80a to 80d and 114a to 114d can be set arbitrarily. Further, the groove widths of the first to fourth storage grooves 86a to 86d and 120a to 120d do not need to be set to the same, and can be appropriately changed.

  The wiring portion 40 may be configured by omitting the first upper stopper portions 82a to 82d and 116a to 116d and the second upper stopper portions 84a to 84d and 118a to 118d.

  The input terminal portion 20 routed around the second storage grooves 86b, 120b (third storage grooves 86c, 120c, fourth storage grooves 86d, 120d) is any of the U-phase, V-phase, and W-phase input terminals. The part 20 may be sufficient, and the terminal part 20 for input of each phase may be arrange | positioned in the different storage grooves 86b-86d and 120b-120d.

  The stator core 16 is not limited to a configuration formed by arranging 18 divided core portions 14 in an annular shape. The stator core 16 may be formed by arranging, for example, nine divided core portions 14 in an annular shape.

  The present invention is not limited to the above-described embodiment, and it is naturally possible to adopt various configurations without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Rotating electrical machine stator 12 ... Holder 14 ... Split core part 16 ... Stator core 18 ... Coil 20 ... Input terminal part 22 ... Metal plate 24 ... Split iron core 26 ... Insulator 28 ... Bolt (fastening member)
DESCRIPTION OF SYMBOLS 30 ... Terminal part for neutral points 36 ... Through-hole 38 ... Winding part 52 ... 1st wiring part 54 ... 2nd wiring part 62 ... Insertion hole 76a-76d, 110a-110d ... 1st lower stopper part 78a-78d, 112a-112d ... 2nd lower stopper part 82a-82d, 116a-116d ... 1st upper stopper part 84a, 84d, 118a-118d ... 2nd upper stopper part 92 ... Side groove 86a, 120a ... 1st storage groove 86b, 120b ... Second storage groove 86c, 120c ... Third storage groove 86d, 120d ... Fourth storage groove

Claims (6)

A rotating electrical machine incorporating a stator having a stator core formed by annularly arranging a plurality of divided core portions,
Each of the plurality of divided core portions constituting the stator includes a divided iron core,
An insulator surrounding a part of the divided iron core;
A coil wound around the split iron core via the insulator,
In the insulator, an outer end surface on the radially outer side of the stator core is formed with a storage groove that extends along the circumferential direction of the stator core and that is routed to the terminal portion of the coil.
A rotating electrical machine having a stator in which a first stopper portion protruding in an axial direction of the stator core is formed at a radially outer end of the stator core among groove side surfaces constituting the storage groove. . The rotating electrical machine according to claim 1, wherein
The side wall portion constituting the groove side surface is formed in a flat plate shape, and has a thick portion and a thin portion,
The rotating electrical machine characterized in that the thin portion has flexibility. In the rotating electrical machine according to claim 1 or 2,
The split iron core is configured by laminating a plurality of metal plates,
In the plurality of metal plates, through holes are formed along the stacking direction of the plurality of metal plates,
The insulator is formed with an insertion hole corresponding to the through hole,
A rotating electrical machine comprising: a fastening member that is inserted through the through hole and the insertion hole, and that clamps the split iron core and the insulator from the outside. In the rotary electric machine according to any one of claims 1 to 3,
Of the groove side surface of the storage groove in which the first stopper portion is formed, the radially outer end portion of the stator core is positioned away from the first stopper portion and in the axial direction of the stator core. A protruding second stopper portion is formed,
A rotating electrical machine having a stator in which a separation interval between the first stopper portion and the second stopper portion is set to be larger than a width of a terminal portion of the coil. In the rotating electrical machine according to any one of claims 1 to 4,
The coils of the plurality of divided core portions constituting the stator are classified into three phases of U phase, V phase, and W phase,
The storage groove is a first storage groove in which a terminal portion of a coil forming a neutral point is routed,
A second storage groove through which the terminal portion of the U-phase coil is routed;
A third storage groove in which the terminal portion of the V-phase coil is routed;
A fourth storage groove through which the terminal portion of the W-phase coil is routed,
The rotary electric machine characterized in that the first to fourth storage grooves have a stator arranged in an axial direction of the stator core. The rotating electrical machine according to claim 5,
The insulator constituting the stator includes a winding part provided with the coil;
A wiring portion that is located on the radially outer side of the stator core than the winding portion and in which the storage groove is formed;
A rotating electrical machine characterized in that a side groove that is connected to the winding part and in which the terminal part of the coil can be arranged is formed at an end of the wiring part on the winding part side.

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