Rotating electrical machine

Abstract

A rotary electric machine capable of easily winding a wire is provided. The rotary electric machine includes a first coil having a winding start portion and a winding end portion, a first lap wire connected to the winding start portion of the first coil, a second lap wire connected to the winding end portion of the first coil, and an insulator having a cylindrical portion in which the first coil is wound and an outer peripheral side surface connected to the cylindrical portion. A plurality of recesses are formed in the outer peripheral side surface of the insulator in a rotational axis direction. The first lap wire and the second lap wire are disposed in two recesses of the plurality of recesses that are located at different positions in the rotational axis direction.

Description

Technical Field

[0001] This invention relates to rotary electric motors. Background Technology

[0002] When winding coils in rotating electrical machines such as three-phase motors and three-phase generators, the lap wire is often wound to the slot on the opposite side of 180 degrees. In order to prevent the lap wire from overlapping with the lap wires of other phases, it is known that a technique is to form three slots in the insulation for winding the lap wire, and to perform winding in a three-stage structure.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2015-171239

[0004] Patent Document 2: Japanese Patent Application Publication No. 2008-167604

[0005] When winding coils into a rotating electrical machine, the lap wire often enters the slot from a groove formed in the insulator, and is then guided to the slots of other stages after the coil is wound into the teeth of the slot. At this point, it can sometimes be difficult to guide the wire to the slots of other stages. Summary of the Invention

[0006] In one aspect, the aim is to provide a rotary motor capable of easily winding wires.

[0007] In one embodiment, a rotary electric motor comprises: a first coil having a winding start portion and a winding end portion; a first contact wire connected to the winding start portion of the first coil; a second contact wire connected to the winding end portion of the first coil; and an insulator having a cylindrical portion for winding the first coil and an outer peripheral side surface connected to the cylindrical portion. On the outer peripheral side surface of the insulator, a plurality of recesses are formed along the rotational axis, and the first contact wire and the second contact wire are disposed in two of the plurality of recesses at different positions along the rotational axis.

[0008] According to one method, it is possible to provide a rotary motor that can easily wind wires. Attached Figure Description

[0009] Figure 1 This is a perspective view of the motor in the embodiment.

[0010] Figure 2 It's a motor. Figure 1 AA section view in the image.

[0011] Figure 3 This is a front view of the stator in the implementation method.

[0012] Figure 4 This is a rear view of the stator in the implementation method.

[0013] Figure 5This is a top view of the stator in the implementation method.

[0014] Figure 6 This is a bottom view of the stator in the implementation method.

[0015] Figure 7 This is an enlarged perspective view of the stator in the implementation method.

[0016] Figure 8 This is a schematic diagram illustrating an example of the location of the cut portion in an embodiment.

[0017] Figure 9 This is an enlarged perspective view of the lead-out position of the connecting wire in the implementation method.

[0018] Figure 10A This is a schematic diagram illustrating an example of the winding structure of the connection wire in an embodiment.

[0019] Figure 10B This is a schematic diagram illustrating an example of the winding structure of the connection wire in an embodiment.

[0020] Figure 11 This is a front view showing an example of a stator with interlocking wires wound around an embodiment.

[0021] Figure 12 This is a rear view showing an example of a stator with interlocking wires wound around an embodiment.

[0022] Figure 13A This is a schematic diagram illustrating an example of the winding structure of the lap joint in a modified example.

[0023] Figure 13B This is a schematic diagram illustrating an example of the winding structure of the lap joint in a modified example.

[0024] Figure 14 This is a front view of an example of a stator with overlapping joints, representing a modified example.

[0025] Figure 15 This is a rear view of an example of a stator with interlocking wires, showing a modified example.

[0026] Explanation of reference numerals in the attached figures

[0027] 1…Motor; 4…Stator; 7…Housing; 8…Cover; 9…Shaft; 91~92…Bearing; 93…Spring; 80…Rotor yoke; 90…Magnet; 40…Stator core; 41A, 41B…Insulator; 50, 51~56…Stator coil; 83…Terminal bracket; 83a…Protrusion; 10a~10d…Protrusion; 10x~10z…Recess; 11~16…Cut; 21~23…Pin; 31~35…Terminal; C1~C6, CC1~CC4…Connecting wire. Detailed Implementation

[0028] The rotary electric motor disclosed in this application will now be described with reference to the accompanying drawings. Furthermore, the dimensional relationships and ratios of the elements in the drawings may sometimes differ from reality. There may also be differences in dimensional relationships and ratios between the elements themselves. In order to facilitate understanding, the drawings often use a three-dimensional orthogonal coordinate system with the direction along the rotation axis (shaft) of the rotary electric motor as the Z-axis.

[0029] [Implementation Method]

[0030] Figure 1 This is a perspective view of the motor in the embodiment. Figure 2 It's a motor. Figure 1 AA section view. In Figure 1 In this motor 1, a generally cylindrical housing 7 and a cover 8 covering the open end of the housing 7 are provided. The housing 7 and the cover 8 are made of, for example, a metallic material. A shaft 9 is exposed from a protrusion 8a at the center of the cover 8. Furthermore, a protrusion 83a made of an insulating material such as resin protrudes from the cover 8, and an external terminal 84 made of a metallic material is exposed from this protrusion 83a. Moreover, the motor 1 is an example of a rotary electric motor.

[0031] Figure 2 It's motor 1. Figure 1 AA section view. In Figure 2 In the middle, on the side of the housing 7 opposite to the cover 8 ( Figure 2 A bearing 91 is provided inside the central protrusion 7a of the lower side of the shaft 9, and a bearing 92 is provided inside the protrusion 8a of the cover 8. The shaft 9 is supported by bearings 91 and 92 and is able to rotate. In addition, the shaft 9 is subjected to force from the bearing 91 side to the bearing 92 side by a spring 93. Furthermore, a sleeve 9a is provided on the outer peripheral surface of the shaft 9 on the bearing 91 side.

[0032] A generally cylindrical rotor yoke 80 is fixed to the outer circumferential surface near approximately the center of shaft 9, and a generally cylindrical magnet 90 is fixed to the outer circumferential surface of rotor yoke 80. The rotor is formed by shaft 9, rotor yoke 80 and magnet 90.

[0033] A stator core 40, having a core back 42 and teeth 43, is fixed to the inner circumferential surface of the housing 7. A stator coil 50 is wound around the teeth 43 of the stator core 40 via insulators 41A and 41B. The stator core 40 of this embodiment has six sets of core backs 42 and teeth 43. The stator 4 is formed by the stator core 40, insulators 41A and 41B, and stator coil 50. Furthermore, insulators 41A and 41B are examples of insulators.

[0034] A portion of the wire connecting each stator coil 51-56 is wound around each tooth 43, extends across the outer periphery of the insulator 41B, and then wound to the position of the other teeth 43. That is, the motor 1 in this embodiment is, for example, a 6-slot three-phase motor. Furthermore, in the following, when referring to the six teeth 43 separately, they are often referred to as teeth 431-436. Also, when referring to the stator coil 50 wound around each of the six teeth 431-436, they are often referred to as stator coils 51-56. Additionally, among the stator coils 51-56, when referring to the wire being wound counterclockwise around teeth 431-436, they are often referred to as stator coils 51c-56c.

[0035] On the other hand, a terminal bracket 83 is provided on the inner side of the cover 8, and a protrusion 83a, which is part of the terminal bracket 83, protrudes outward from the cover 8, and an external terminal 84 is inserted into the protrusion 83a. In addition, a wiring terminal 31 is provided on the insulator 41A. During the assembly of the motor 1, the external terminal 84 on the cover 8 side is engaged and electrically connected with the wiring terminal 31 on the insulator 41A side.

[0036] External terminal 84 is externally connected to motor 1, and wiring terminal 31 is fused or wound to the end of the wire forming stator coil 50.

[0037] Figure 3 This is a front view of the stator in the implementation method. Figure 4 This is a rear view of the stator in the implementation method. Figure 5 This is a top view of the stator in the implementation method. Figure 6 This is a bottom view of the stator in the implementation method. For example... Figures 3-5 As shown, in this embodiment, the insulator 41A of the stator 4 is provided with Figure 2 In addition to the terminal 31 shown, terminals 32 to 35 are also provided that are fused or wound to the ends of the wires forming the stator coil 50. Furthermore, as shown... Figure 3 , Figure 4 as well as Figure 6 As shown, pins 21 to 23 are arranged on the insulator 41B of the stator 4. As will be explained later, the ends of the wires forming the stator coil 50 are often wound around pins 21 to 23.

[0038] In addition, such as Figures 2-4As shown, a plurality of recesses 10x to 10z and a plurality of protrusions 10a to 10d are formed circumferentially on the insulator 41B. The recesses 10x to 10z and the protrusions 10a to 10d are formed, for example, in a direction substantially orthogonal to the rotational axis (Z-axis direction) of the motor 1. That is, in this embodiment, the recesses 10x to 10z and the protrusions 10a to 10d are formed substantially parallel to each other. A wire connecting the plurality of stator coils 50 is provided across the recesses 10x to 10z. That is, the motor 1 of this embodiment, which has three recesses 10x to 10z, can be wound in a three-stage configuration. In this embodiment, the recesses 10x to 10z are arranged sequentially at different positions along the rotational axis (Z-axis direction) of the motor 1, for example, close to teeth 431 to 436. That is, the recess 10x is formed on the positive Z-axis side, the recess 10z is formed on the negative Z-axis side, and the recess 10y is formed in the middle.

[0039] Figure 7 This is an enlarged perspective view of the stator in the implementation method. Figure 7 This indicates an observation from an oblique upward direction (negative X-axis, negative Y-axis, and positive Z-axis). Figure 4 The state of the part indicated by the reference numeral P in the attached figure. (As shown in the figure) Figure 7 As shown, in this embodiment, the recesses 10x to 10z are formed by being clamped by any two of the protrusions 10a to 10d. For example, the recess 10x is formed by being clamped by... Figure 7 The portion shown is sandwiched between the protrusion 10a formed on the positive Z-axis side and the portion 10b formed on the negative Z-axis side. Similarly, the recess 10y is sandwiched between the protrusion 10b formed on the positive Z-axis side and the portion 10c formed on the negative Z-axis side, and the recess 10z is sandwiched between the protrusion 10c formed on the positive Z-axis side and the portion 10d formed on the negative Z-axis side.

[0040] In addition, the protrusions 10b to 10d in this embodiment are provided with cutouts 11 to 16. The cutouts 11 to 16 are respectively formed at the positions where the wires forming the stator coil 50 are led out or led in. Figure 8 This is a schematic diagram illustrating an example of the location of the cutout in an embodiment. For example... Figure 8 As shown, for example, the cutouts 11 to 16 are formed corresponding to the positions of the teeth 431 to 436 on which stator coils 51 to 56 are formed respectively.

[0041] In this embodiment, the overlap line wound around any one of the recesses 10x to 10z is from... Figure 8The wires, in either the left or right direction shown, are introduced through the cutouts 11-16 to the teeth 431-436 corresponding to each cutout 11-16. Furthermore, in this embodiment, the wires wound around each tooth 431-436 are... Figure 8 In any of the left and right directions shown, it is led out through the cutouts 11 to 16 to any one of the recesses 10x to 10z. Furthermore, in Figure 8 In the diagram, for example, the left direction indicates the direction of winding the wire clockwise (CW), and the right direction indicates the direction of winding the wire counterclockwise (CCW).

[0042] In addition to the cutouts 11-16 corresponding to the positions of each tooth 431-436, other cutouts may be formed at positions corresponding to terminals 31-35, etc. In this embodiment, such as Figure 8 As shown, for example, a cutout 19 corresponding to the position of the terminal 34 is further formed between the cutout 14 and the cutout 15.

[0043] Furthermore, in this embodiment, the cut portions 11 to 16 are formed corresponding to which of the recesses 10x to 10z the wire is laid across. Additionally, the cut portions 11 to 16 are formed corresponding to the positions of the teeth 43 for introducing the wire. In this embodiment, when the lap wire is wound around any of the recesses 10x to 10z, the lap wire is introduced into the teeth 431 to 436 or the terminals 31 to 35 only when the protrusions 10b to 10d are cut on the side of the recess 10x to 10z further away from the tooth 431 to 436 or the terminal 31 to 35 in the negative Z-axis direction, i.e., away from the target of introduction.

[0044] In this embodiment, whether or not the protrusions 10b to 10d are cut varies in each of the cut portions 11 to 16. That is, the shapes of the cut portions 11 to 16 are not necessarily the same. For example, the cut portion 11 is formed only in the protrusion 10d. In this case, the protrusions 10b and 10c are not cut at the positions corresponding to the teeth 431. In this case, at the teeth 431 corresponding to the cut portion 11, only the wire passing through the recess 10z, which is located on the side (negative Z-axis direction side) of the recess 10z that is provided in the recesses 10x to 10z and is farther away from the teeth 431 than the protrusions 10b and 10c that do not have cut portions 11, can be introduced.

[0045] Additionally, for example, not only are notch portions 14 and 16 formed in the protrusion 10d, but also in the protrusion 10c. In this case, in addition to the recess 10z, the tooth 434 corresponding to the notch portion 14 and the tooth 436 corresponding to the notch portion 16 can also be used to introduce a wire that crosses the recess 10y adjacent to the protrusion 10c on the side (negative Z-axis direction side) that is farther away from the tooth 434 or 436 compared to the protrusion 10b where notch portions 14 and 16 are formed.

[0046] Alternatively, for example, cutouts 12, 13, and 15 are formed in any one of the protrusions 10b to 10d. In this case, a wire that spans any one of the recesses 10x to 10z can be introduced into the tooth 432 corresponding to cutout 12, the tooth 433 corresponding to cutout 13, and the tooth 435 corresponding to cutout 15.

[0047] Furthermore, for example, when the wire is wound mechanically, the wire drawn from the tooth 43 or terminals 31-35, which serve as the lead-out source, is typically placed in the protrusions 10a-10c that are closer to the lead-out source (located on the positive Z-axis side) than the concave portions 10x-10z of the lead-out target. In this case, it is preferable to provide cutout portions 11-16 in the protrusions 10b-10d that are farther from the lead-out source (located on the negative Z-axis side) than the concave portions 10x-10z of the lead-out target, and not to cut out the protrusions 10a-10c that are closer to the lead-out source (located on the positive Z-axis side) than the concave portions 10x-10z of the lead-out target. For example, if the lead-out target is the concave portion 10z, it is difficult to draw the wire from the tooth 432 to the concave portion 10z because the protrusion 10c is also cut out in the cutout portion 12 corresponding to the tooth 432.

[0048] Therefore, in this embodiment, as Figure 8 As shown, the cut portions 11 to 16 may also be formed asymmetrically with respect to at least one of the protrusions 10b to 10d. For example, the cut portions 11 to 16 may also be partially absent with respect to any one of the protrusions 10b to 10d.

[0049] For example, Figure 8 The cutout portion 12 shown is formed in the same way as the protrusions 10c and 10d in the protrusion 10b. In contrast, in the cutout portion 13, the portion indicated by reference numeral 10bc in the protrusion 10b is not cut. That is, as shown... Figure 7 and Figure 8As shown, in the cut portion 13, when the wire is wound in the right direction (counterclockwise), the shape of the position 131 where the wire is introduced from the recess 10x or 10y is asymmetrical with respect to the shape of the position 132 where the wire is led out from the recess 10y. For example, in position 131, the circumferential ends 10bs, 10cs, and 10ds of the three protrusions are approximately in the same position, while in position 132, the circumferential end 10be of the protrusion is in a different position than the circumferential ends 10ce and 10de. In this case, the wire led out from the tooth 433 corresponding to the cut portion 13 in the right direction (counterclockwise) towards the recess 10y can be placed in the portion of the protrusion 10b indicated by reference numeral 10bc (the surface of the protrusion 10b resting on the negative Z-axis side). Therefore, unlike the difficulty in mechanically winding the wire from the tooth 432 corresponding to the cut-out portion 12 to the recess 10y, the wire can be easily wound from the tooth 433 to the recess 10y. Furthermore, position 131 is an example of the position where the first contact wire is introduced into the first coil, and position 132 is an example of the position where the second contact wire is led out from the first coil.

[0050] Similarly, in Figure 8 The portion of the protrusion 10c shown as reference numeral 10cd in the cut-out portion 14 is not cut. That is, in the cut-out portion 14, when the wire is wound to the right (counterclockwise), the shape of the position 141 where the wire is introduced from the recess 10y or 10z and the shape of the position 142 where the wire is led out relative to the recess 10z are also left-right asymmetrical. In this case, the wire that is led out from the tooth 434 corresponding to the cut-out portion 14 in the right direction (counterclockwise) towards the recess 10z can be placed in the portion of the protrusion 10c shown as reference numeral 10cd. Thus, the wire can be easily led out from the tooth 434 towards the recess 10z by mechanical winding.

[0051] use Figure 9 For use Figure 8 The asymmetrical cut 14 shown is illustrated with the wire wound around it. Figure 9 This is an enlarged perspective view of the lead-out position of the connecting wire in the implementation method. Figure 9 This indicates observation from a downward angle (negative X-axis, negative Y-axis, and negative Z-axis). Figure 4 The state of the part indicated by the attached figure label Q. (As shown) Figure 9 As shown, the lap wire C4, which is wound counterclockwise around the recess 10y of the insulator 41B, is introduced into the cutout 14 at position 141. Then, as explained later, the wire connected to the lap wire C4 is fused or wound around the terminal 33 and wound counterclockwise around the tooth 434, thereby forming the stator coil 54c.

[0052] Then, the wire connected to the winding end 54e of the stator coil 54c, as a lap wire C5, is led out from the cut-out portion 14 and placed in the protrusion 10c at position 142. That is, the lap wire C5 is wound in a recess 10z that is different from the recess 10y where the lap wire C4 is wound. According to this structure, the wire connected to the winding end 54e of the stator coil 54c can be easily led out to the recess 10z by mechanical winding.

[0053] use Figures 10A to 12 The structure of winding a wire around an insulator 41B having protrusions 10a to 10d and recesses 10x to 10z will be described. Figure 10A and Figure 10B This is a schematic diagram illustrating an example of the winding structure of the connection wire in an embodiment. Figure 11 This is a front view showing an example of a stator with interlocking wires wound around an embodiment. Figure 12 This is a rear view showing an example of a stator with interlocking wires wound around an embodiment. Figure 11 Indicates in Figure 3 The portion indicated by reference numeral M1 in the attached drawing is wound with lap joints C1 to C6. Figure 12 Indicates in Figure 4 The portion indicated by reference numeral M2 in the attached drawing is wound with overlapping lines C1 to C6.

[0054] Figures 10A to 12 The structure of the winding connection when the rotation direction of motor 1 is clockwise (CW) will be described. In this case, stator coils 52 and 55 correspond to the U phase, stator coils 53 and 56 correspond to the V phase, and stator coils 51 and 54 correspond to the W phase. Furthermore, in Figure 10A and Figure 10B In, with Figure 8 Similarly, the right-hand arrow indicates winding the wire counter-clockwise, and the left-hand arrow indicates winding the wire clockwise. Additionally, in Figure 10B , Figure 11 as well as Figure 12 The illustrations related to pins 21-23 and terminals 31-35 are omitted. Furthermore, in the following expressions, "connected to the beginning of winding" or "connected to the end of winding" includes the case where the connection is indirectly connected to the beginning or end of winding of the stator coil 50 via terminals 31-35 or other stator coils 50 without other connection wires.

[0055] First, such as Figure 10A and Figure 10BAs shown, after the wire is wound around pin 21, it is introduced into the insulator 41B through the cut 12, as indicated by arrow C0. The wire is fused or wound to terminal 31, and then wound clockwise around teeth 432, thereby forming stator coil 52. In this embodiment, terminal 31 is electrically connected to the external terminal 84 of phase U. Figure 10A and Figure 11 As shown, the wire connected to the winding end 52e of the stator coil 52 is called the lap wire C1 and is led out from the cut-out portion 12 to the recess 10x in a counterclockwise direction.

[0056] like Figure 10A and Figure 10B As shown, the lap wire C1 is wound counterclockwise around the recess 10x half a turn (180 degrees) and introduced into the insulator 41B through the cut 15. The wire connected to the lap wire C1 is wound clockwise through the teeth 435, thereby forming the stator coil 55. That is, as Figure 10A and Figure 12 As shown, the lap wire C1 is connected to the winding start 55s of the stator coil 55. Furthermore, the stator coil 55 is an example of a second coil.

[0057] The wire connected to the winding end 55e of the stator coil 55 is called the lap wire C2, which is led out from the cut-out portion 15 in a counterclockwise direction to the recess 10x. The lap wire C2 is wound around the recess 10x in a counterclockwise direction, and at position 131 opposite to position 132 in the circumferential direction, it is introduced into the interior of the insulator 41B from the cut-out portion 13.

[0058] After the wire connected to the connecting wire C2 is fused or wound to the terminal 32, it is wound counterclockwise in the teeth 433, thereby forming the stator coil 53c. In this embodiment, the terminal 32 serves as a commutator from the U phase to the V phase. Furthermore, the stator coil 53c is an example of a first coil, and the connecting wire C2 is an example of a first connecting wire. In this embodiment, the connecting wire C2 is indirectly connected to the beginning of the winding of the stator coil 53c via the terminal 32.

[0059] The wire connected to the winding end 53e of the stator coil 53c, as the lap wire C3, is led out counterclockwise from the cut-out portion 13 to the recess 10y, which is different from the recess 10x where the lap wire C2 is wound. Figure 10B as well as Figure 12As shown by reference numeral 132, the lap joint C3 extends to the portion indicated by reference numeral 10bc of the protrusion 10c, specifically the portion where the circumferential end 10be of the protrusion 10b and the circumferential end 10ce of the protrusion 10c are at different positions. Furthermore, the lap joint C3 is an example of a second lap joint. Additionally, the recess 10y around which the lap joint C3 is wound is an example of a second recess; the recess 10y and the recess 10x around which the lap joint C2 is wound are examples of two recesses located at different positions along the rotational axis. Furthermore, the protrusions 10b and 10c are examples of two protrusions facing each other, sandwiching a second recess. Additionally, the portion indicated by reference numeral 10bc of the protrusion 10c is a stepped portion formed at the position shown by reference numeral 132 due to the different positions of the circumferential ends 10be and 10ce of the two protrusions 10b and 10c.

[0060] The lead wire C3, which is led out to the recess 10y, is wound counterclockwise around the recess 10y half a turn and introduced into the insulator 41B through the cut 16. The lead wire C3 is wound counterclockwise at the teeth 436, thereby forming the stator coil 56c. That is, as Figure 10A and Figure 11 As shown, in this embodiment, the bonding wire C3 is connected to the winding start portion 56s of the stator coil 56c.

[0061] After the wire connected to the winding end of the stator coil 56c is fused or wound to the terminal 35, it is led out as a lap wire C4 from the cut-out portion 16 to the recess 10y, which is the same as the recess 10y where the lap wire C3 is wound, in a counterclockwise direction. In this embodiment, the terminal 35 is electrically connected to the external terminal 84 of the V phase.

[0062] like Figure 10B as well as Figure 12 As shown by reference numeral 141 in the attached drawing, the bonding wire C4 is wound counterclockwise around the recess 10y and introduced into the tooth 434 from the cut portion 14. The wire connected to the bonding wire C4 is fused or wound around the terminal 33 and then wound counterclockwise around the tooth 434, thereby forming the stator coil 54c. In this embodiment, the terminal 33 serves as a commutator from the V phase to the W phase.

[0063] like Figure 10B as well as Figure 12 As shown by reference numeral 142, a wire connected to the winding end 54e of the stator coil 54c, serving as a lap wire C5, is led out counterclockwise from the cut-out portion 14 to the recess 10z, which is different from the recess 10y where the lap wire C4 is wound. The lap wire C5 is led out to the portion of the protrusion 10c indicated by reference numeral 10cd.

[0064] In addition, such as Figure 9 and Figure 12As shown, at position 141 where the connecting wire C4 is introduced into the stator coil 54c, the circumferential ends of the two protrusions 10c and 10d are at approximately the same position. On the other hand, at position 142 where the connecting wire C5 is led out from the stator coil 53c, the circumferential ends of the two protrusions 10c and 10d are at different positions.

[0065] The lap wire C5, which is led out to the recess 10z, is wound counterclockwise around the recess 10z half a turn and introduced into the insulator 41B from the cut-out portion 11. For example... Figure 10A and Figure 11 As shown, the lap wire C5 is connected to the winding start 51s of the stator coil 51c. Then, the wire is wound counterclockwise in the tooth 431, thereby forming the stator coil 51c. Then, the wire connected to the winding end 51e of the stator coil 51c, as the lap wire C6, is led out counterclockwise from the cut-out portion 11 to the recess 10z.

[0066] The connecting wire C6 is wound counterclockwise around the recess 10z and introduced into the insulator 41B through the cut 19. Then, the wire is fused or wound to the terminal 34, as shown in the image. Figure 10A and Figure 10B As indicated by arrow C9, it is led out from the cutout 19 and wound around the pin 22. In this embodiment, the terminal 34 is electrically connected to the external terminal 84 of the W phase. Thus, in this embodiment, the stator coil 50, including the connecting wires C1 to C4, is formed by the same conductor, for example, by drawing a single line.

[0067] As described above, the motor 1 of this embodiment includes: a first coil 53c having a winding start portion and a winding end portion; a first contact wire C2 connected to the winding start portion of the first coil 53c; a second contact wire C3 connected to the winding end portion of the first coil; and an insulator 41 having cylindrical portions 41A and 41B for winding the first coil, and an outer peripheral side surface 41B connected to the cylindrical portion. On the outer peripheral side surface 41B of the insulator, a plurality of recesses 10x to 10z are formed in the rotational axis. The first contact wire C2 and the second contact wire C3 are disposed in two recesses 10x and 10y that are located at different positions in the rotational axis among the plurality of recesses 10x to 10z. Therefore, a rotary motor capable of easily winding wires can be provided.

[0068] [Variation Example]

[0069] In this embodiment, a motor 1 that rotates in a clockwise direction (CW) has been described, but the embodiment is not limited to this. For example, by changing the order and direction of the wires wound on the insulator 41B, a motor 2 that rotates in a counterclockwise direction (CCW) can also be realized. In addition, the bonding wires can be wound in a direction different from other bonding wires in the plurality of recesses 10x to 10z.

[0070] In the variation, using Figures 13A to 15 The structure of the wire wound around the insulator 41B of the motor 2 will be described. Furthermore, in the following description, the same reference numerals will be used for the same parts as those shown in the previously described figures, and repeated descriptions will be omitted. Figure 13A and Figure 13B This is a schematic diagram illustrating an example of the winding structure of the lap joint in a modified example. Figure 14 This is a front view of an example of a stator with overlapping joints, representing a modified example. Figure 15 This is a rear view of an example of a stator with interlocking wires, showing a modified example.

[0071] Figures 13A to 15 The structure of the wire wound in insulator 41B in motor 2, which rotates in a counter-clockwise (CCW) direction, will be described. In the modified example, stator coils 53 and 56 correspond to the V phase, which is the same as in the embodiment, but stator coils 52 and 55 correspond to the W phase, and stator coils 51 and 54 correspond to the U phase, which differs from the embodiment. Furthermore, in Figure 13A and Figure 13B In the diagram, the right-hand arrow indicates winding the wire counter-clockwise, and the left-hand arrow indicates winding the wire clockwise. Additionally, in... Figure 13B , Figure 14 as well as Figure 15 In, with Figure 10B , Figure 11 as well as Figure 12 Similarly, illustrations related to pins 21-23 and terminals 31-35 are omitted.

[0072] First, such as Figure 13A As shown, after the wire is wrapped around pin 23, it is introduced into the interior of insulator 41B through cut-out portion 19, as indicated by arrow CC0, and is fused or wound to terminal 34. In a modified example, terminal 34 is electrically connected to external terminal 84 of phase W.

[0073] Then, the wire is wound clockwise around tooth 435, thereby forming stator coil 55. For example... Figure 13A and Figure 15 As shown, the wire connected to the winding end C55e of the stator coil 55 is used as a lap wire CC1 and is led out from the cut-out portion 15 to the recess 10x in a clockwise direction (leftward direction).

[0074] like Figure 14As shown, the lap wire CC1 is wound clockwise around the recess 10x half a turn (180 degrees) and introduced into the insulator 41B from the cut portion 12. The wire connected to the lap wire CC1 is wound clockwise at the teeth 432, thereby forming the stator coil 52. That is, in this modified example, the lap wire CC1 is connected to the winding start portion C52s of the stator coil 52. Furthermore, in this modified example, the lap wire CC1 is an example of a first lap wire, and the stator coil 52 is an example of a third coil.

[0075] In this variation, the wire connected to the winding end of the stator coil 52 is not led out to the cut-out portion 12, but is fused or wound to the terminal block 32. In this variation, the terminal block 32 becomes a commutator from the W phase to the V phase. The wire is then wound counterclockwise on the teeth 433, thereby forming the stator coil 53c. Furthermore, in this variation, the stator coil 53c is an example of a first coil. In this variation, the first contact wire CC1 is indirectly connected to the winding beginning of the first coil 53c via other stator coils 52 and the terminal block 32.

[0076] like Figure 13B as well as Figure 15 As shown by reference numeral 132 in the attached drawing, the wire connected to the winding end C53e of the stator coil 53c, as a lap wire CC2, is led out counterclockwise from the cut-out portion 13 to the recess 10y, which is different from the recess 10x where the lap wire CC1 is wound. The lap wire CC2 is led out to the portion shown by reference numeral 10bc of the protrusion 10c and wound around the recess 10y half a turn (180 degrees) counterclockwise. Furthermore, the lap wire CC2 is an example of a second lap wire.

[0077] like Figure 13B and Figure 14 As shown, the bonding wire CC2 is introduced into the insulator 41B from the cutout 16. The wire connected to the bonding wire CC2 is wound counterclockwise in the teeth 436, thereby forming the stator coil 56c, which is then fused or wound to the terminal block 35. That is, as... Figure 13B and Figure 14 As shown, in this modified example, the contact wire CC2 is connected to the winding start C56s of the stator coil 56c. In this modified example, the terminal 35 is electrically connected to the external terminal 84 of the V phase. Furthermore, the stator coil 56c is an example of a fourth coil.

[0078] The wire fused or wound to the terminal block 35 is used as a lap wire CC3, and is led out from the cut-out portion 16 to the recess 10y, which is the same as the recess 10y where the lap wire CC2 is wound. Figure 13B and Figure 14As shown, in this modified example, the lap wire CC3 is indirectly connected to the winding end of the stator coil 56c via the terminal 35. Furthermore, the lap wire CC3 is an example of a third lap wire.

[0079] like Figure 13B and Figure 15 As shown, the bonding wire CC3 is wound counterclockwise around the recess 10y and introduced into the tooth 434 from the cut 14. The wire connected to the bonding wire CC3 is fused or wound around the terminal 33 and then wound counterclockwise around the tooth 434, thereby forming the stator coil 54c. In a modified example, the terminal 33 becomes a commutator from the V phase to the U phase.

[0080] like Figure 13B as well as Figure 15 As shown by reference numeral 142 in the attached drawing, the wire connected to the winding end C54e of the stator coil 54c, as a lap wire CC4, is placed in the portion of the protrusion 10c indicated by reference numeral 10cd. Thus, the lap wire CC4 is led out from the cut-out portion 14 in a counterclockwise direction to the recess 10z, which is different from the recess 10y where the lap wire CC3 is wound.

[0081] like Figure 13B and Figure 14 As shown, the bonding wire CC4 is wound counterclockwise around the recess 10z half a turn and introduced into the insulator 41B through the cut 11. Then, the wire connected to the bonding wire CC4 is wound counterclockwise at the teeth 431, thereby forming the stator coil 51c. That is, as... Figure 13B and Figure 14 As shown, the connecting wire CC4 is connected to the winding start C51s of the stator coil 51c.

[0082] In this modified example, the wire connected to the winding end of the stator coil 51 is fused or wound to the terminal 31, and then led out from the cut portion 11 and wound around the pin 21 as shown by arrow CC9. In this modified example, the terminal 31 is electrically connected to the external terminal 84 of the U phase. Thus, in this modified example, the stator coil 50, including the connecting wires CC1 to CC4, is also formed from the same wire.

[0083] As explained above, in this modified motor 2, the starting point of the winding of the first coil 53c can be connected to the ending point of the winding of the third coil 52, which is in a different phase from the first coil 53c, without passing through other connecting wires. Furthermore, in this modified motor 2, the third connecting wire CC3, which connects to the ending point of the winding of the fourth coil 56c (which connects to the starting point C56s and the second connecting wire CC2), can also be positioned in the same recess 10y as the recess 10y where the second connecting wire CC2 is wound. Additionally, the connecting wires in the plurality of recesses 10x to 10z in this modified motor 2 can also have a connecting wire CC1 positioned in a rotational direction (clockwise) different from the rotational direction (counterclockwise) in which the second connecting wire CC2 and the other connecting wires CC3 and CC4 are positioned. This increases the flexibility in the arrangement of the connecting wires.

[0084] Furthermore, the motor 2 in this modification can use the same insulator 41 as the insulator used in the motor 1, which rotates in a different direction. Therefore, it is not necessary to prepare different insulators depending on the direction of rotation, thereby reducing manufacturing costs.

[0085] The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be made without departing from its spirit. For example, motor 1 is shown as an example of a rotating electric motor, but it is not limited thereto; for example, it may be other rotating electric motors such as generators. In addition, a three-phase motor with 6 slots is shown as motor 1, but the number of slots of the rotating electric motor is not limited thereto.

[0086] In addition, such as Figure 8 As shown by reference numerals 10bc and 10cd in the accompanying drawings, a portion of the protrusions 10b to 10d is shown where the right-hand side (counterclockwise side) is not cut relative to the cut portions 11 to 16, but the embodiment is not limited to this. For example, a portion of the cut portions 11 to 16 in the protrusions 10b to 10d may be a structure where the left-hand side (clockwise side) is not cut, or a structure where neither the left-hand side nor the right-hand side is cut. Therefore, when the wire is led out from the tooth 43 in the left-hand (clockwise) direction, the wire can be easily wound by mechanical winding.

[0087] Furthermore, while a structure has been described in which multiple recesses 10x to 10z are arranged at different positions along the rotational axis (Z-axis direction) of the motor 1, this is not a limitation. For example, multiple recesses could also be arranged at different positions radially, for example, in a concentric circle arrangement centered on the axis of the rotary motor. In this case, they could be arranged at different positions along the rotational axis, similar to this embodiment. Alternatively, at least two of the multiple recesses could be arranged in a straight line along the rotational axis.

[0088] Furthermore, the relationship between the phase differences of the two stator coils 50 connected by the lap wires and the differences of the recesses where the two lap wires are wound is not limited to the examples shown in the embodiments and variations. For example, in the embodiment, the lap wire C4 connecting the winding end of the stator coil 56c of different phases and the winding beginning of the stator coil 54c, and the lap wire C5 connecting the winding end of the stator coil 54c, can also be wound in the same recess. In addition, in the variation, the lap wire CC2 connecting the winding end of the stator coil 53c of the same phase and the winding beginning of the stator coil 56c, and the lap wire CC3 connected to the winding end of the stator coil 56c, can also be wound in different recesses.

[0089] Furthermore, the present invention is not limited to the embodiments described above. Structures constructed by appropriately combining the aforementioned constituent elements are also included in the present invention. Moreover, further effects and modifications can be readily derived by those skilled in the art. Therefore, the present invention is not limited to the embodiments described above, and various modifications are possible.

Claims

1. A rotary electric motor, characterized in that, have: The first coil has a winding start portion and a winding end portion; The first connection wire is connected to the beginning of the winding of the first coil; The second connection wire is connected to the winding end of the first coil; and The insulator has a cylindrical portion for winding the first coil and an outer peripheral side surface connected to the cylindrical portion. Multiple recesses are formed on the outer peripheral side of the insulator along the rotational axis. The first and second lap joints are disposed in two recesses that are located at different positions along the rotation axis among the plurality of recesses. The plurality of concave portions are each formed by two convex portions opposite each other on the axis of rotation. The second recess, which is configured for the second lap wire, has two protrusions positioned opposite each other in the circumferential direction at the position where the second lap wire is led out to the second recess.

2. The rotary motor according to claim 1, characterized in that, In the position where the first bonding wire is introduced into the first coil, the circumferential ends of the two protrusions that are opposite each other and sandwich the second concave portion are at the same position.

3. The rotary motor according to claim 1 or 2, characterized in that, The first connection wire is connected to the winding end of a second coil that is in a different phase from the first coil.

4. The rotary motor according to claim 1 or 2, characterized in that, The beginning of the winding of the first coil is connected to the end of the winding of the third coil, which is in a different phase from the first coil.

5. The rotary motor according to claim 1 or 2, characterized in that, The second connection wire is connected to the beginning of the winding of the fourth coil. The third lap wire, which is connected to the winding end of the fourth coil, is located in the same recess as the recess for winding the second lap wire.

6. The rotary electric motor according to claim 5, characterized in that, The first connection wire, the second connection wire, and the third connection wire are formed by the same conductor.

7. The rotary electric motor according to claim 1 or 2, characterized in that, The lap joints disposed in the plurality of recesses have lap joints disposed in a rotation direction different from the rotation direction of other lap joints.

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