JP2017118671A - Rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine which can suppress a large size to the outside of a radial direction with the suppression of a complicated wiring method.SOLUTION: A motor 100 includes: a stator core 10; lead wires 30 successively wound around teeth 12 with concentrated winding along one direction in the circumferential direction; and a plurality of terminals 50. The lead wires 30 include: a plurality of windings 31-33 wound around the teeth 12; and connecting wires 60, disposed on one side in the axial direction, for connecting between each of the plurality of windings 31-33, or connecting between each winding 31-33 and each terminal 50. A start point part 34 is connected to a W phase terminal 51 which is arranged at the farthest one side. The lead wires 30 are wound starting from the first tooth 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rotating electrical machine, and more particularly, to a rotating electrical machine including a conducting wire including a crossover portion.

  2. Description of the Related Art Conventionally, a rotating electrical machine including a lead wire including a crossover portion is known (see, for example, Patent Document 1 and Patent Document 2).

  Patent Document 1 discloses a motor including a conducting wire including a jumper wire. The motor includes a stator core having a plurality of teeth, and an insulator that insulates between the crossover and the stator core. The insulator includes a crossover guide wall that protrudes to one side in the axial direction of the stator core, a crossover holder that is arranged on the inner side in the radial direction of the crossover guide wall, and an inner circumference in the radial direction of the crossover holder. A coil guide wall having an inner peripheral surface on the radially inner side than the surface is provided.

  Patent Document 2 discloses a stator for an electric motor provided with a magnet wire wired in a crossover manner. The stator includes a stator core, guide protrusions for guiding the magnet wires that are cross-wired, and a plurality of terminals to which a starting point portion (portion for starting wiring) of the magnet wires is connected. The guide protrusion is provided so as to protrude from the stator core to one side in the axial direction, and the plurality of terminals are disposed on the other side in the axial direction of the stator core. Further, the guide protrusion includes a thick part having a relatively large thickness (plate thickness) in the radial direction of the stator and a relatively thin part. Thereby, the stator of the above-mentioned patent document 2 is constituted so that the magnet wire wired over the thick part of the guide projection and the magnet wire wired over the thin part are prevented from overlapping in the radial direction. Has been.

JP2015-133845A JP 2014-108007 A

  However, in the motor described in Patent Document 1, since the connecting wire holding portion and the coil guide wall are provided on the inner side in the radial direction than the connecting wire guide wall, the conductive wire is connected to a plurality of teeth using a winding nozzle. In the case of winding the wire, it is considered that the crossover holding part and the coil guide wall may obstruct the track of the winding nozzle. For this reason, in order to avoid interference with the track | orbit of a winding nozzle, a crossover holding | maintenance part, and a coil guide wall, there exists a problem that the track | orbit (wiring method) of a winding nozzle becomes complicated.

  Further, in the stator described in Patent Document 2, the guide protrusion is provided on one side in the axial direction of the stator, and the terminal is provided on the other side in the axial direction of the stator. For this reason, in the stator described in Patent Document 2, when a magnet wire is wired using a winding nozzle, a gap between a plurality of terminals on the other side in the axial direction and a guide protrusion on one side in the axial direction. It is necessary to make a round trip. Therefore, even in the stator described in Patent Document 2, it is considered that the winding nozzle track (wiring method) becomes complicated.

  Therefore, in the stator described in Patent Document 2, both the guide protrusion and the plurality of terminals are arranged on one side in the axial direction of the stator in order to prevent the winding nozzle track from becoming complicated. Configuration is conceivable. For example, a configuration in which a plurality of terminals are provided on one axial side of the guide protrusion is conceivable.

  However, in the stator configured as described above, the end portion (starting portion) of the magnet wire needs to be connected to the terminal on one side in the axial direction, so that the magnet wire is a guide protrusion near the end portion of the magnet wire. It is considered that wiring is performed so as to cross the thick part and the thin part. In this case, it is considered that the connecting wire is further wired from the outside in the radial direction of the wiring wired across the thick part and the thin part, and the stator is increased in size to the outside in the radial direction. Further, it is considered that the stator is further increased in size radially outward due to the thicker thickness of the guide protrusion. Therefore, in the stator (rotating electric machine) having the above-described configuration, it is difficult to prevent the winding nozzle from being enlarged in the radial direction while suppressing the complexity of the track (wiring method) of the winding nozzle. There is a problem.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to increase the size outward in the radial direction while suppressing the complexity of the wiring method. It is providing the rotary electric machine which can be suppressed.

  In order to achieve the above object, a rotating electrical machine according to one aspect of the present invention includes a plurality of teeth, a ring-shaped stator core, and a plurality of teeth in order along one circumferential direction. A plurality of conductors wound by concentrated winding and a plurality of teeth provided on the outer side in the radial direction of the teeth and on one side in the axial direction so as to be adjacent to each other at a predetermined interval in the circumferential direction. A conductor member is disposed on one side in the axial direction to connect the plurality of winding portions or between the winding portions and the terminal member. A starting point portion of the conducting wire is connected to the one side terminal member arranged on one side of the most circumferential direction among the plurality of terminal members, and the conducting wire is on one side Teeth circumference corresponding to the terminal member It is wound as one start winding the teeth adjacent to the side. In the specification of the present application, the “starting portion of the conducting wire” means a wiring start portion when wiring the conducting wire, and includes the end portion of the conducting wire. Further, the “starting point portion of the conducting wire” is described as meaning not only the end portion of the conducting wire but also a broad concept including the vicinity of the end portion.

  In the rotating electrical machine according to one aspect of the present invention, the starting point of the conducting wire is connected to the one-side terminal member arranged on one side of the most circumferential direction among the plurality of terminal members, and the conducting wire is connected to the one-side terminal. The teeth adjacent to one side in the circumferential direction of the teeth corresponding to the member are wound to start winding. Thereby, when winding and wiring in order along the one side direction of the circumferential direction to a plurality of teeth, it is possible to prevent the crossover portions from crossing each other. In this case, it is possible to prevent the plurality of connecting wire portions from overlapping in the radial direction by arranging the plurality of connecting wires in the arrangement order along the axial direction. Further, by providing the terminal member on one side in the axial direction and arranging the crossover portion on one side in the axial direction, the terminal member and the crossover portion are arranged on the same side in the axial direction. As a result, it is possible to suppress an increase in the distance that the winding nozzle moves in the axial direction when wiring the conducting wire, so that the wiring method can be prevented from becoming complicated. As a result, it is possible to suppress an increase in size to the outside in the radial direction while suppressing a complicated wiring method.

  In the rotating electrical machine according to the above aspect, preferably, the connecting wire portion that extends from the starting point of the third phase to the teeth among the plurality of connecting wire portions passes through the inside in the radial direction of the terminal member. Has been.

  Here, at the time when the crossover portion is wired from the starting point of the third phase to the teeth when the conducting wire is wired, the crossover portion is already connected to any other terminal member. In this state, if the connecting wire portion from the third phase starting point to the teeth is wired outside the other terminal members in the radial direction, the connecting wire portion from the third phase starting point to the teeth It is considered that the already wired wiring lines overlap in the radial direction. On the other hand, in the present invention, at least the connecting wire portion from the starting point of the third phase toward the teeth is arranged so as to pass through the inner side in the radial direction of the terminal member, It is possible to prevent the already wired wiring lines from overlapping in the radial direction.

  In this case, preferably, the connecting wire portion connected to the end point portion of the conducting wire among the plurality of connecting wire portions is disposed so as to pass inside in the radial direction of the terminal member.

  Here, since the time when the crossover portion is connected to the end point portion of the conducting wire is after the time point when the crossover portion is wired from the starting point of the third phase to the teeth, in this case as well, The crossover portion is connected to any other terminal member. Therefore, by configuring as described above, it is possible to more effectively suppress overlapping of the wired connecting wire portion and the already wired connecting wire portion in the radial direction.

  In the rotating electrical machine according to the above aspect, preferably, the rotating electrical machine further includes an insulator that is provided so as to cover each of the plurality of teeth, and that insulates the stator core and the conductive wire. The groove part which has a different groove depth which controls the height position of the axial direction of a part to a mutually different height position in each phase of a some phase is included.

  If comprised in this way, since the height position of the cross direction of an axial direction of a crossover part can be controlled to a mutually different height position in each phase of a plurality of phases by a groove part, a plurality of crossover line parts mutually mutually By wiring at different height positions, it is possible to more reliably prevent the connecting wire portions from overlapping in the radial direction.

  In this case, preferably, two grooves are provided in each insulator so as to correspond to each tooth of the stator core.

  If comprised in this way, one groove part of two groove parts is used as a groove part which passes when a crossover part enters into teeth, and the other groove part is used as a groove part which passes when a crossover part retreats from teeth. be able to. As a result, since the height position in the axial direction of the connecting wire portion entering the teeth and the connecting wire portion retracting from the teeth can be regulated by the two groove portions, the axial direction of the connecting wire portion is more effectively achieved. Can be regulated to different height positions in each of the plurality of phases.

  In the rotary electric machine including the insulator including the groove portion, preferably, the terminal member includes a joint portion joined to the crossover portion, and the insulator is provided in the vicinity of the groove portion, and passes through the groove portion to join the joint portion. A height position restricting portion that restricts the height position in the axial direction of the crossover portion joined to the wire.

  If comprised in this way, even when the junction part of a terminal member is provided in the height position of the axial direction different from a groove part, the height direction of the axial direction of the crossover part joined to the junction part is set. Can be regulated.

It is a perspective view which shows the structure of the motor (stator) by one Embodiment of this invention. It is the top view which looked at the stator core and rotor core of the motor by one Embodiment of this invention from the axial direction. It is a circuit diagram for demonstrating the connection of the motor by one Embodiment of this invention. It is a perspective view of the insulator of the motor by one embodiment of the present invention. It is a figure for demonstrating the coil | winding wound by the teeth seen from the radial inside of the motor by one Embodiment of this invention. It is a side view of the insulator of the motor by one embodiment of the present invention. It is the figure which expanded a part of FIG. It is the top view which looked at the insulator of the motor by one Embodiment of this invention from the axial direction. It is a figure which shows the terminal vicinity protrusion part of the motor by one Embodiment of this invention. It is a top view which shows the wiring of the conducting wire of the motor by one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  With reference to FIGS. 1-10, the structure of the motor 100 by this embodiment is demonstrated.

  [General configuration of motor]

  As shown in FIGS. 1 and 2, the motor 100 (an example of a rotating electrical machine) is configured as, for example, a three-phase brushless motor. The motor 100 includes a stator core 10, a rotor core 20, a conducting wire 30, an insulator 40, and a plurality (three) of terminals 50 (an example of a terminal member). The terminal 50 includes a W-phase terminal 51 (an example of a one-side terminal member), a V-phase terminal 52 (an example of a terminal member), and a U-phase terminal 53 (an example of a terminal member).

  In the present specification, the “circumferential direction” means the circumferential direction of the stator core 10 (rotor core 20) (the arrow A1 direction or the arrow A2 direction in FIG. 1), and the “radial direction” means the stator core 10 (rotor core). 20) in the radial direction. That is, the “radial direction” means a direction along a straight line passing through the center C (see FIG. 2) of the stator core 10 (rotor core 20). The “axial direction” is described as meaning the rotational axis direction of the rotor core 20 (direction parallel to the Z axis).

  As shown in FIG. 2, the stator core 10 is provided with a plurality of (for example, nine) teeth 12 projecting radially inward from the back yoke 11 at equal angular intervals. In FIG. 2, the nine teeth 12 are numbered (No. 1 to No. 9) for easy explanation. Further, slots 13 are formed between adjacent teeth 12. As shown in FIG. 1, a conductive wire 30 is wound around each tooth 12 via an insulator 40 by concentrated winding.

  As shown in FIG. 2, the rotor core 20 is disposed inside the annular stator core 10 so as to face the stator core 10. In addition, the rotor core 20 has a plurality of (for example, six) permanent magnets 21 having a rectangular cross section (rectangular shape) as viewed from the axial direction, embedded at equal angular intervals in the circumferential direction. That is, the motor 100 is configured as a 6-pole 9-slot rotating electric machine.

  As shown in FIG. 3, the conducting wire 30 includes a W-V phase winding (hereinafter referred to as a first phase winding 31), a V-U phase winding (hereinafter referred to as a second phase winding 32), and a U-phase winding. -W-phase winding (hereinafter referred to as third-phase winding 33). The first phase winding 31 (an example of a winding portion) is formed by connecting windings 31a to 31c in series. The second phase winding 32 (an example of a winding portion) is formed by connecting windings 32a to 32c in series. The third phase winding 33 (an example of a winding portion) is formed by connecting windings 33a to 33c in series.

  The conducting wire 30 is connected by so-called Δ connection. That is, one side (winding 31 a) of the first phase winding 31 is connected to the W phase terminal 51, and the other side (winding 31 c) of the first phase winding 31 is connected to the V phase terminal 52. Has been. Further, one side (winding 32 a) of the second phase winding 32 is connected to the V phase terminal 52, and the other side (winding 32 c) of the second phase winding 32 is connected to the U phase terminal 53. Has been. One side (winding 33 a) of third phase winding 33 is connected to U phase terminal 53, and the other side (winding 33 c) of third phase winding 33 is connected to W phase terminal 51. Yes. As a result, a W-V phase voltage is induced in the first phase winding 31, a V-U phase voltage is induced in the second phase winding 32, and a third phase winding 33 is induced in the third phase winding 33. A U-W phase voltage is induced.

  As shown in FIG. 4, the insulator 40 is made of resin or the like and has an insulating property. As shown in FIG. 1, the insulator 40 includes a plurality of covering portions 41 that respectively cover the plurality of teeth 12 (see FIG. 2) from one side in the axial direction (arrow Z1 direction side), and includes the stator core 10 and the conductor 30. And are configured to be insulated from each other.

  As shown in FIG. 1, the plurality of terminals 50 are adjacent to each other on the outer side in the radial direction of the teeth 12 and on one side in the axial direction (arrow Z1 direction side) with a predetermined interval L in the circumferential direction. It is provided as follows. Specifically, the plurality of terminals 50 protrude from the insulator 40 toward the arrow Z1 direction side on the arrow Z1 direction side of the back yoke 11 provided on the radially outer side of the tooth 12, respectively. Has been placed.

  Further, as shown in FIG. 5, the plurality of terminals 50 are applied with a W-phase terminal 51 to which a W-phase voltage is applied, a V-phase terminal 52 to which a V-phase voltage is applied, and a U-phase voltage. U-phase terminal 53. The W-phase terminal 51 is the radially outer side of the ninth tooth 12 (see FIG. 10), the V-phase terminal 52 is the radially outer side of the eighth tooth 12 (see FIG. 10), and the U-phase terminal 53 is The seventh tooth 12 is disposed on the outer side in the radial direction (see FIG. 10). In the specification of the present application, the tooth 12 corresponding to the W-phase terminal 51 means the 9th tooth 12, the tooth 12 corresponding to the V-phase terminal 52 means the 8th tooth 12, and U The tooth 12 corresponding to the phase terminal 53 is described as meaning the 7th tooth 12.

(Construction of conductor wiring)
Further, as shown in FIG. 5, the conducting wire 30 includes a first phase winding 31, a second phase winding 32, a third phase winding 33, a first phase jumper wire 61, a second phase jumper wire 62, and 3rd crossover wire 63 is included. Further, the first phase winding 31, the second phase winding 32, and the third phase winding 33 are plural in order along one circumferential direction (direction of arrow A1 (wiring direction) in FIG. 5). The teeth 12 are wound around. In the following description, when the first phase connecting wire 61, the second phase connecting wire 62, and the third phase connecting wire 63 are not distinguished from each other, the connecting wire 60 (an example of a conducting wire and a connecting wire portion) is simply used. It describes as.

  Specifically, the winding 31a of the first phase winding 31 is wound around the first tooth 12, the winding 31b is the fourth tooth 12, and the winding 31c is the seventh tooth 12. Each is wound. That is, the first phase winding 31 is provided such that two teeth 12 are arranged between the winding 31a and the winding 31b and between the windings 31b and 31c, respectively.

  Further, the winding 32a of the second phase winding 32 is wound around the 9th tooth 12, the winding 32b is wound around the 3rd tooth 12, and the winding 32c is wound around the 6th tooth 12. . Further, the winding 33 a of the third phase winding 33 is wound around the eighth tooth 12, the winding 33 b is wound around the second tooth 12, and the winding 33 c is wound around the fifth tooth 12.

  In the present embodiment, the first phase connecting wire 61 is disposed on one side (arrow Z1 direction side) (see FIG. 1) of the stator core 10 in the axial direction, and as shown in FIG. The first phase winding 31 and the terminal 50 (W-phase terminal 51 or V-phase terminal 52) are connected to each other.

  Further, in the present embodiment, as shown in FIG. 5, the starting point portion 34 of the conducting wire 30 (first phase connecting wire 61) is arranged on one side of the terminal 50 in the most circumferential direction (arrow A <b> 1 direction side). Connected to the W-phase terminal 51. Moreover, the conducting wire 30 is arrange | positioned inside the radial direction of the W-phase terminal 51, and starts winding the 1st tooth 12 adjacent to the arrow A1 direction side of the 9th tooth 12 corresponding to the W-phase terminal 51 (FIG. 10). Reference) is wound.

  Specifically, the first phase connecting wire 61 includes connecting wires 61a to 61d. One side (one end) of the connecting wire 61 a is formed as the starting point portion 34 of the conducting wire 30, and the connecting wire 61 a is connected to the W-phase terminal 51 at the starting point portion 34. The other side of the connecting wire 61a is connected to the winding 31a. In the present specification, the “starting point portion 34” is described as meaning a wider portion including not only the end portion of the connecting wire 61a but also the vicinity of the end portion. Further, the first phase winding 31 and the first phase crossover wire 61 are continuously connected, and the portion wound around the tooth 12 is defined as the first phase winding 31 and the other first A portion of the one-phase conducting wire 30 is described as a first phase connecting wire 61.

  The connecting wire 61b is arranged to connect the winding 31a and the winding 31b, and the connecting wire 61c is connected to connect the winding 31b and the winding 31c. Crossover 61d is arranged to connect winding 31c and V-phase terminal 52.

  The second phase connecting wire 62 is disposed on one side (arrow Z1 direction side) of the stator core 10 in the axial direction, and the second phase windings 32 or the second phase winding 32 and the terminal 50 (V phase terminal 52). Or it is comprised so that it may connect with the U-phase terminal 53).

  Specifically, the second phase connecting wire 62 includes connecting wires 62a to 62d. The connecting wire 62a is between the V-phase terminal 52 and the winding 32a, the connecting wire 62b is between the windings 32a and 32b, and the connecting wire 62c is between the winding 32b and the winding 32c. Line 62d is arranged to connect winding 32c and U-phase terminal 53, respectively.

  The third phase connecting wire 63 is arranged on one side (arrow Z1 direction side) of the stator core 10 in the axial direction, and the third phase windings 33 or the third phase winding 33 and the terminal 50 (U phase terminal 53). Or it is comprised so that the W-phase terminal 51) may be connected.

  Specifically, the third phase connecting wire 63 is connected to the connecting wires 63a to 63c (an example of the connecting wire portion from the starting point of the third phase toward the teeth) and the connecting wire 63d (the end point of the conducting wire). An example of a crossover part). The connecting wire 63a is between the U-phase terminal 53 (an example of the third phase starting point) and the winding 33a, the connecting wire 63b is between the winding 33a and the winding 33b, and the connecting wire 63c is a winding. It arrange | positions so that between the wire | line 33b and the coil | winding 33c may be connected. One side (one end) of the connecting wire 63 d is formed as the end point portion 35 of the conducting wire 30. The connecting wire 63d is connected to the W-phase terminal 51 in the vicinity of the end point portion 35, and the other side of the connecting wire 63d is connected to the winding 33c. Note that the end point portion 35 is not limited to the portion of only the end portion of the crossover line 63 as in the case of the start point portion 34, but includes a wider portion including the vicinity of the end portion.

(Configuration of insulator)
As shown in FIG. 4, the insulator 40 is formed to have an annular shape. And the crossover guide which guides the crossover 60 (refer FIG. 1) to the insulator 40 on the one side (arrow Z1 direction side) of the axial direction of the stator core 10 and along the circumferential direction (arrow A1 direction). A wall 70 is provided. The insulator 40 has a flat surface parallel to a plane perpendicular to the axial direction, and is provided with a flange portion 71 along the circumferential direction outside the insulator 40 in the radial direction.

  Specifically, as shown in FIG. 6, the crossover guide wall 70 is formed as a wall that protrudes from the flange portion 71 toward the arrow Z <b> 1 direction at a height h <b> 1 and extends along the circumferential direction. The first phase connecting wire 61 is connected between the teeth 12 by contacting the surface on the arrow Z1 direction side of the flange portion 71 and the radially outer surface of the connecting wire guide wall 70. It is configured. Further, the second phase connecting wire 62 is connected between the teeth 12 by contacting the radially outer surface of the connecting wire guide wall 70 on the arrow Z1 direction side of the first phase connecting wire 61. It is comprised so that. Further, the third phase connecting wire 63 is connected between the teeth 12 by contacting the radially outer surface of the connecting wire guide wall 70 on the arrow Z1 direction side of the second phase connecting wire 61. It is comprised so that.

  Then, the first phase crossover line 61, the second phase crossover line 62, and the third phase crossover line 63 are wired in this order along the arrow A1 direction, so that the first phase crossover line 61 is connected from the flange portion 71. The second phase connecting wire 62 and the third phase connecting wire 63 are arranged in this order so as to overlap in the axial direction.

  Here, in the present embodiment, as shown in FIG. 7, the insulator 40 is provided with any one of the first phase connecting wire 61, the second phase connecting wire 62, and the third phase connecting wire 63, Different groove depths that regulate the height position in the axial direction (direction along the Z axis) of the arranged jumper wires 60 to different height positions (height positions Ha, Hb, and Hc) in each of the three phases. A plurality of groove portions 80 having a depth (groove depths D1, D2 and D3) are included.

  Specifically, the groove part 80 is formed as a notch part in which a part of the crossover guide wall 70 is notched. And the groove part 80 is formed in the substantially U shape which has an opening in the arrow Z1 direction side seeing from the radial direction outer side (for example, arrow Y2 direction side). Moreover, in this embodiment, the groove part 80 is provided in the insulator 40 in total 18 pieces (refer FIG. 5), 2 each in each teeth 12. FIG.

  Groove portion 80 includes a first phase groove portion 81, a second phase groove portion 82, and a third phase groove portion 83. The first phase groove portion 81 has a groove depth D1. The size of the groove depth D1 is set to be approximately the same as the height h1 of the crossover guide wall 70. That is, as shown in FIG. 7, the height position Ha of the bottom 81 a of the first phase groove 81 is set to be substantially equal to the height of the flange 71 in the axial direction (direction parallel to the Z-axis). Has been. The first phase connecting wire 61 is arranged in the first phase groove portion 81 so that the first phase connecting wire 61 passes in the radial direction, so that the height position in the axial direction of the first phase connecting wire 61 is the height position Ha. It is regulated to be.

  Further, the second phase groove portion 82 has a groove depth D2. The groove depth D2 is smaller than the groove depth D1, and a size (D2-D1) obtained by subtracting the size of the groove depth D1 from the size of the groove depth D2 is set to be equal to or larger than the diameter d of the conducting wire 30. ing. As a result, the height position Hb of the bottom portion 82a of the second phase groove portion 82 is higher than the height position Ha by (D2-D1) on the arrow Z2 direction side. Then, the second phase connecting wire 62 is arranged in the second phase groove portion 82 so that the second phase connecting wire 62 passes in the radial direction, so that the height position in the axial direction of the second phase connecting wire 62 is the height position Hb. It is regulated to be.

  The third phase groove 83 has a groove depth D3. The groove depth D3 is smaller than the groove depth D2, and the size (D3-D2) obtained by subtracting the size of the groove depth D2 from the size of the groove depth D3 is set to be equal to or larger than the diameter d of the conducting wire 30. ing. That is, there is a relationship of D1> D2> D3. And the bottom part 83a of the 3rd phase groove part 83 has height position Hc, and the groove part 80 has height position Hc, Hb, and Ha from the one where it goes to the arrow Z1 direction side. And the 3rd phase crossing part 83 is arrange | positioned so that the 3rd phase crossover line 63 may pass in radial direction, and as for the 3rd phase crossover line 63, the height position of an axial direction is the height position Hc. It is regulated to be.

  As shown in FIG. 8, the insulator 40 is provided with a plurality of protrusions 72 that are continuous from the upper end surface 70 a of the crossover guide wall 70 and protrude outward in the radial direction. The plurality of protrusions 72 are provided in the vicinity of the groove 80. And the protrusion part 72 is comprised so that the height position of the connecting wire 60 (especially 3rd phase connecting wire 63) may be controlled with the groove part 80, as shown in FIG. Moreover, the protrusion part 72 is comprised so that the connecting wire 60 may suppress detachment | leave from the connecting wire guide part 70 to the arrow Z1 direction side.

  Further, as shown in FIG. 8, the insulator 40 is provided with three hole-like terminal attachment portions 73 to which the terminals 50 can be attached. Specifically, the terminal mounting portion 73 is located on the radially outer side of the teeth 12 of No. 7, No. 8, and No. 9, and substantially in the radial direction (substantially from the center C of the stator core 10). (Positions having the same distance E).

  The terminal attachment portion 73 has an opening on the arrow Z1 direction side, and the terminal 50 is inserted from the arrow Z1 direction side, whereby the terminal attachment portion 73 (insulator 40) is connected to the terminal as shown in FIG. 50 is attached.

  Here, in the present embodiment, as shown in FIG. 1, the terminals 50 are joined to the first phase jumper wire 61, the second phase jumper wire 62, or the third phase jumper wire 63, respectively. A portion 54 is provided. Specifically, the joining portion 54 is formed in a hook shape that protrudes radially outward from the terminal 50 and toward the arrow Z1 direction.

  The joint 54 provided on the W-phase terminal 51 is joined to and electrically connected to the start point 34 of the first phase crossover wire 61 and the end point 35 of the third phase crossover wire 63. Further, the joint 54 provided on the V-phase terminal 52 is joined to the first phase crossover wire 61 and the second phase crossover wire 62. Further, the joint 54 provided on the U-phase terminal 53 is joined to the second phase jumper wire 62 and the third phase jumper wire 63.

  Further, in the present embodiment, as shown in FIGS. 8 and 9, the insulator 40 is provided in the vicinity of the groove 80, and the connecting wire 60 that passes through the groove 80 and is joined to the joint 54. A terminal vicinity protruding portion 74 (an example of a height position restricting portion) that restricts the height position in the axial direction to a height position Hd (see FIG. 9) is provided. As shown in FIG. 9, the height position Hd is set to a position lower than the height position He of the joint portion 54 of the terminal 50. Further, as shown in FIG. 8, the terminal vicinity protrusion 74 is between the W phase terminal 51 and the V phase terminal 52, between the V phase terminal 52 and the U phase terminal 53, and in the vicinity of the U phase terminal 53. And the connecting wire guide wall 70 disposed in the other direction in the circumferential direction of the U-phase terminal 53 (arrow A2 direction side).

  Further, as shown in FIG. 8, the terminal vicinity projecting portion 74 is continuous from the upper end surface 70a of the crossover guide wall 70, and from the radial projecting portion 74a projecting radially outward and the radial projecting portion 74a. And a circumferential projecting portion 74b projecting to the other side in the circumferential direction (arrow A2 direction side). As shown in FIG. 9, the groove 80 and the circumferential protrusion 74b are configured to overlap each other when viewed in the radial direction (viewed from the arrow Y1 direction side).

  Further, as shown in FIG. 8, the terminal vicinity protrusion 74 has an inclined surface 74c that is inclined toward the bottom 83a of the groove 83 with respect to the upper surface 70a. Thereby, the terminal vicinity protrusion part 74 is comprised so that the connecting wire 60 may be guided by the inclined surface 74c, when the connecting wire 60 is arrange | positioned in the groove part 83. As shown in FIG. In addition, the terminal vicinity protrusion part 74 has the inclined surface 74c, and when the connecting wire 60 is arrange | positioned in the groove part 83, it is suppressed that the connecting wire 60 is caught by the circumferential direction protrusion part 74b.

  As shown in FIG. 10, in the present embodiment, the third phase connecting the winding 33 a wound around the eighth tooth 12 and the winding 33 b wound around the second tooth 12. The connecting wire 63 (the connecting wire 63 b) is arranged so as to pass through the inner side in the radial direction of the W-phase terminal 51. Further, the connecting wire 63 d which is the connecting wire 60 connected (joined) to the connecting portion 54 provided in the W-phase terminal 51 of the third phase connecting wire 63 is a V-phase terminal 52 and a U-phase terminal 53. It arrange | positions so that it may pass through the inner side of radial direction.

[Wiring method]
Next, with reference to FIG. 5 and FIG. 10, the wiring method of the conducting wire 30 of the motor 100 of this embodiment is demonstrated. In addition, the wiring method of the conducting wire 30 is included in the assembly method (manufacturing method) of the motor 100 of this embodiment.

(Phase 1)
First, as shown in FIG. 10, the starting point portion 34 of the conducting wire 30 (first phase connecting wire 61) is arranged (connected) to (in the vicinity of) the W-phase terminal 51 by a winding nozzle (not shown). And while conducting wire 30 is wired in the wiring direction (arrow A1 direction), it passes through the groove portion 81 on the front side in the circumferential direction (arrow A2 direction side) of the groove portion 81 corresponding to the first tooth 12 and passes through the first It is wound around the teeth 12. That is, winding is started from the first tooth 12 of the plurality of teeth 12. Then, the conducting wire 30 passes the groove part 81 of the back side (arrow A1 direction side) of the circumferential direction of the 1st teeth 12. FIG. In other words, the conductive wire 30 enters the first tooth 12 from the groove 81 on the arrow A2 direction side, is wound around the first tooth 12, and then retracts from the groove 81 on the arrow A1 direction side. At this time, the height position of the conducting wire 30 in the axial direction is regulated by the groove portion 81 to the height position Ha (see FIG. 7).

  And the conducting wire 30 is wired along the arrow A1 direction along the flange portion 71 and the connecting wire guide wall 70 in the state of the height position Ha, and the arrow in the groove portion 81 corresponding to the fourth tooth 12. It passes through the groove 81 on the A2 direction side. And the conducting wire 30 is wound around the 4th tooth | gear 12, and passes the groove part 81 by the side of arrow A1 after being wound. Thereafter, it is wound around the 7th tooth 12 in the same manner. Conductive wire 30 is connected to V-phase terminal 52. As a result, as shown in FIG. 5, first-phase (W-V phase) crossover wires 61a to 61d and windings 31a to 31c are formed.

(Second phase)
Next, as shown in FIG. 10, after the conducting wire 30 (second phase connecting wire 62) is connected to the V-phase terminal 52, the lead wire 30 (the second phase connecting wire 62) on the arrow A <b> 2 direction side in the groove portion 82 corresponding to the ninth tooth 12. Passes through the groove 82. And it winds around the No. 9 teeth 12 and passes through the groove part 82 on the arrow A1 direction side after being wound. At this time, the height position of the conducting wire 30 in the axial direction is regulated by the groove portion 82 to the height position Hb (> Ha see FIG. 7). That is, the second-phase conductor 30 is disposed so as to overlap one side (the arrow Z1 direction side) in the axial direction of the first-phase conductor 30. Thereafter, similarly to the above, it is wound around the third tooth 12 and the sixth tooth 12 and connected to the U-phase terminal 53. As a result, as shown in FIG. 5, second-phase (VU-phase) crossover wires 62a to 62d and windings 32a to 32c are formed.

(Phase 3)
Then, as shown in FIG. 10, the conductive wire 30 (third phase connecting wire 63) is connected to the U-phase terminal 53, and then the groove portion on the arrow A <b> 2 direction side in the groove portion 83 corresponding to the eighth tooth 12. Pass 83. And it winds around the No. 9 tooth | gear 12, and after passing, it passes the groove part 83 by the arrow A1 direction side. At this time, the height position of the conducting wire 30 in the axial direction is regulated by the groove portion 83 to the height position Hc (> Hb see FIG. 7). That is, the third-phase lead wire 30 is disposed so as to overlap one side (the arrow Z1 direction side) in the axial direction of the second-phase lead wire 30.

  Thereafter, the conducting wire 30 (third phase connecting wire 63) passes through the groove portion 82 on the arrow A2 direction side in the groove portion 82 corresponding to the ninth tooth 12 around which the conducting wire 30 is wound. Pass through the groove 81 on the arrow A2 direction side of the grooves 81 corresponding to the teeth 12. That is, the conductive wire 30 (third phase connecting wire 63 (crossing wire 63 b)) passes through the inner side of the W phase terminal 51 in the radial direction. The conducting wire 30 is already wound around the first tooth 12 and the ninth tooth 12.

  Thereafter, the conductive wire 30 passes through the groove 83 corresponding to the second tooth 12 and is wound around the second tooth 12. Thereafter, the conducting wire 30 is wound around the fifth tooth 12, and the conducting wire 30 that has passed through the groove 83 corresponding to the fifth tooth 12 is the arrow A <b> 2 direction side of the groove 81 corresponding to the seventh tooth 12. Pass through the groove 81. And the conducting wire 30 passes the groove part 83 by the side of the arrow A1 of the 8th teeth 12. FIG. That is, the conducting wire 30 (the third phase connecting wire 63 (the connecting wire 63a)) passes through the inside in the radial direction of the V phase terminal 52 and the U phase terminal 53. The conducting wire 30 is already wound around the 7th tooth 12 and the 8th tooth 12. Then, the end point portion 35 of the conducting wire 30 (third phase connecting wire 63) is arranged (connected) to (in the vicinity of) the W phase terminal 51. As a result, as shown in FIG. 5, third-phase (VU-phase) connecting wires 63a to 63d and windings 33a to 33c are formed. And the wiring of the conducting wire 30 is complete | finished. In this way, the wiring lines 60 can be wired without crossing each other.

[Effect of this embodiment]
In the present embodiment, the following effects can be obtained.

  In the present embodiment, as described above, when the conductive wire 30 is wound and wired in order on the plurality of teeth 12 along one circumferential direction (arrow A1 direction), the connecting wires 60 intersect each other. Can be suppressed. In this case, the connecting wires 60 can be prevented from overlapping in the radial direction by arranging the connecting wires 60 in the arrangement order (in the order of the height positions Ha, Hb, and Hc) along the axial direction. . Further, by providing the terminal 50 on one side in the axial direction (arrow Z1 direction side) and arranging the crossover 60 on one side in the axial direction, the terminal 50 and the crossover 60 are on the same side in the axial direction. Be placed. As a result, when arranging the conducting wire 30, it is possible to suppress an increase in the distance that the winding nozzle moves in the axial direction, so that the wiring method can be prevented from becoming complicated. As a result, it is possible to prevent the motor 100 from becoming larger outside in the radial direction while suppressing the wiring method from becoming complicated.

  Here, when the conducting wire 30 is wired, the third phase connecting wire 63 (the connecting wires 63 a to 63 c) is wired from the U-phase terminal 53 to the tooth 12, and connected to the end point portion 35 of the conducting wire 30. When the connecting wire 60 (third phase connecting wire 63 (connecting wire 63d)) is connected to the W phase terminal 51, any other terminal member (V phase terminal 52 and U phase terminal 53) has already been connected. Further, a crossover 60 is connected. In this state, when the third phase crossover wire 63 is wired outside the V phase terminal 52 and the U phase terminal 53 in the radial direction, the third phase crossover wire 63 and the V phase terminal 52 and the U phase terminal are already present. It is considered that the crossover 60 wired to 53 overlaps in the radial direction. On the other hand, in the present embodiment, the third phase connecting wire 63 is disposed so as to pass through the inside in the radial direction of the V phase terminal 52 and the U phase terminal 53, It is possible to prevent the crossover wires 60 already wired to the V-phase terminal 52 and the U-phase terminal 53 from overlapping in the radial direction.

  In the present embodiment, the height of the connecting wire 60 in the axial direction can be restricted to different height positions (height positions Ha, Hb, and Hc) in each of the three phases by the groove 80. Therefore, it is possible to more reliably prevent the connecting wires 60 from overlapping in the radial direction by wiring the connecting wires 60 at different height positions.

  In the present embodiment, one groove portion 80 of the two groove portions 80 corresponding to the teeth 12 is used as the groove portion 80 that passes when the connecting wire 60 enters the teeth 12, and the other groove portion 80 is used as the connecting wire 60. Can be used as a groove portion 80 that passes when the teeth retract from the tooth 12. As a result, the height positions in the axial direction of the connecting wire 60 that enters the tooth 12 and the connecting wire 60 that retreats from the tooth 12 can be regulated by the two groove portions 80, so that the connecting wire 60 can be more effectively used. The height position in the axial direction can be restricted to different height positions in each of the three phases.

  In the present embodiment, even when the joint portion 54 of the terminal 50 is provided at an axial height position different from that of the groove portion 80, the height in the axial direction of the crossover 60 joined to the joint portion 54. The height position can be restricted to a height position Hd lower than the height position of the joint portion 54.

[Modification]
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiment but by the scope of claims for patent, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, the example in which the motor 100 is used as the rotating electrical machine has been described, but the present invention is not limited to this. For example, in the present invention, a generator may be used as the rotating electrical machine.

  For example, in the above-described embodiment, an example in which the motor 100 is configured as a motor having 6 poles and 9 slots has been described, but the present invention is not limited thereto. That is, in the present invention, the motor 100 may be configured to have a number of poles other than 6 or may be configured to have a number of slots other than 9 slots.

  Moreover, in the said embodiment, although the example which comprises the groove part 81, the groove part 82, and the groove part 83 so that the groove depth was mutually different was shown, this invention is not limited to this. For example, the groove depths of the groove part 81, the groove part 82, and the groove part 83 may be configured to be equal to each other.

  Moreover, in the said embodiment, although the example which provides the groove part 80 2 each in each teeth 12 was shown, this invention is not limited to this. For example, one groove portion 80 may be provided for each tooth 12.

  Moreover, although the said embodiment showed the example which applies the voltage of W phase to the terminal 50 arrange | positioned at the one side (arrow A1 direction side) of the most circumferential direction among the some terminals 50, this invention was shown. Is not limited to this. That is, the U-phase voltage may be applied to the terminal 50 arranged on the most circumferential side of the plurality of terminals 50, or the V-phase voltage may be applied. May be.

10 Stator core 12 Teeth 30 Conductor 31 First phase winding (winding portion, conductor)
31a-31c Winding (winding part, conducting wire)
32 Second phase winding (winding part, conducting wire)
32a-32c Winding (winding part, conducting wire)
33 Third phase winding (winding section, conducting wire)
33a-33c Winding (winding part, conducting wire)
34 Start point 35 End point 40 Insulator 50 Terminal (terminal member)
51 W phase terminal (terminal member, one side terminal member)
52 V-phase terminal (terminal member)
53 U-phase terminal (terminal member, starting point of the third phase)
54 Junction 60 Crossover (crossover, conductor)
61 First phase crossover wire (crossover wire part, conducting wire)
61a-61d Crossover wire (crossover wire part, conducting wire)
62 Second phase crossover wire (crossover wire, conductor)
62a-62d Crossover wire (crossover wire part, conducting wire)
63 Third-phase crossover wire (crossover wire, conductor)
63a-63c Crossover line (crossover line part, crossover line part, lead wire from the starting point of the third phase toward the teeth)
63d Crossover wire (crossover wire portion, crossover wire portion, lead wire connected to end point portion of lead wire)
74 Protruding part near the terminal (height position restricting part)
80 groove 81 first phase groove (groove)
82 Second phase groove (groove)
83 Third phase groove (groove)
100 motor (rotary electric machine)

Claims (6)

A stator core having a plurality of teeth and formed in an annular shape;
Conductive wires wound by concentrated winding in order along one circumferential direction of the plurality of teeth,
A plurality of terminal members provided on the outer side in the radial direction of the plurality of teeth and on one side in the axial direction so as to be adjacent to each other at a predetermined interval in the circumferential direction;
The conducting wire is disposed on one side in the axial direction with a plurality of winding portions wound around the plurality of teeth, and connects the plurality of winding portions or the winding portions and the terminal member. Including a plurality of crossover sections
The starting point of the conducting wire is connected to the one-side terminal member arranged on one side in the most circumferential direction among the plurality of terminal members, and the conducting wire corresponds to the one-side terminal member. A rotating electrical machine wound with the teeth adjacent to one side in the circumferential direction of the teeth being wound.   The crossover portion that is directed to the teeth from at least a third phase starting point portion of the plurality of crossover portions is disposed so as to pass inside in a radial direction of the terminal member. The rotating electrical machine described.   The crossover part connected to the end point part of the conducting wire among the plurality of crossover parts is arranged so as to pass through a radially inner side of the terminal member. Rotating electric machine. An insulator that is provided so as to cover each of the plurality of teeth, and that insulates the stator core and the conductor;
The insulator has groove portions having different groove depths in which the connecting wire portions are arranged and the height positions in the axial direction of the connecting wire portions are restricted to different height positions in each phase of a plurality of phases. The rotary electric machine of any one of Claims 1-3 containing these.   5. The rotating electrical machine according to claim 4, wherein two grooves are provided in the insulator so as to correspond to the teeth of the stator core. The terminal member includes a joint portion joined to the crossover portion,
The insulator includes a height position restricting portion that is provided in the vicinity of the groove portion and restricts a height position in the axial direction of the crossover portion that is passed through the groove portion and is joined to the joint portion. The rotating electrical machine according to claim 4 or 5.

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