Coil body, armature and rotating electric machine

Abstract

To provide a coil body capable of increasing torque while suppressing the increase in physical size.SOLUTION: A coil body 32 includes a band member 34 and multiple coils 16. The band member 34 is circularly wound along a circumferential direction and forms multiple layers in a radial direction. The multiple coils 16 each have a vertical part 36 and are arranged at predetermined positions in the circumferential and radial directions of the band member 34, and are connected according to a specified connection pattern. The coil body 32 also includes a vertical part laminate 56 that is formed by stacking the vertical parts 36 radially in a cross-section cut along the radial direction of the band member 34 and the multiple coils 16. In the vertical part laminate 56, the vertical parts 36 are adjacent to each other in the radial direction with different potentials when the multiple coils 16 are energized.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a coil body, an armature, and a rotating electric machine. [Background technology]

[0002] The following Patent Document 1 discloses a coil body constituting a part of an armature of a rotating electric machine. The coil body described in this document includes a first conductive cylinder, a second conductive cylinder, and an electrical insulator arranged between the first conductive cylinder and the second conductive cylinder. The first conductive cylinder of the coil body includes a plurality of first conductive bands extending in the axial direction of the cylinder and arranged adjacent to each other at intervals in the circumferential direction. The second conductive cylinder includes a plurality of second conductive bands extending in the axial direction of the cylinder and arranged adjacent to each other at intervals in the circumferential direction. The plurality of first conductive bands and the plurality of second conductive bands are electrically insulated by the electrical insulator. This configuration makes it possible to simplify the configuration of the coil body and reduce costs while suppressing deterioration of the electrical performance of the coil body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-070140 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a motor having a coil body as in the above-mentioned patent document, it is desirable to improve the torque while suppressing an increase in the size.

[0005] In consideration of the above, an object of the present disclosure is to provide a coil body, an armature, and a rotating electric machine that can improve torque while suppressing an increase in size. [Means for solving the problem]

[0006] The coil body (32) that solves the above problem includes a band member (34) that is formed in a band shape using an insulating material and that is wound in a ring shape along the circumferential direction to form multiple layers in the radial direction, a plurality of coils (16) that are formed on the band member using a conductive material and have vertical portions (36), that are arranged at predetermined positions in the circumferential direction and radial direction of the band member and are connected in a predetermined connection pattern, and a vertical portion stack (56) that is formed by stacking the vertical portions in the radial direction in a cross section obtained by cutting the band member and the plurality of coils along the radial direction, and that has vertical portions that have different potentials adjacent to each other in the radial direction when electricity is applied to the plurality of coils. Also, an armature (14) that solves the above problem includes this coil body. Furthermore, a rotating electric machine (10, 68, 82, 88, 90, 98, 100, 102, 118, 120, 122) that solves the above problems includes one of a stator (14) and a rotor (12) that includes this armature, and the other of a stator and rotor that has a magnet (18) arranged radially opposite the coil body.

[0007] With this configuration, it is possible to improve the torque while suppressing an increase in the size of the engine. [Brief description of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view showing a cross section of a motor according to a first embodiment taken along an axial direction. [Diagram 2] 1 is a cross-sectional view showing a cross section of a motor according to a first embodiment taken along a radial direction. [Diagram 3] FIG. 2 is a perspective view showing a coil body. [Figure 4] FIG. 2 is a perspective view showing a schematic diagram of a band member in a wound state. [Diagram 5] FIG. 1 is a diagram illustrating a star connection. [Figure 6] FIG. 2 is a diagram showing connections of multiple coils. [Figure 7] FIG. 2 is a diagram showing a schematic diagram of a coil. [Figure 8]13 is a schematic diagram in which some coils constituting a U-phase are offset from other coils in the axial direction. FIG. [Figure 9] FIG. 4 is a diagram showing an expanded coil body. [Figure 10] FIG. 4 is a cross-sectional view showing a part of a coil body. [Figure 11] FIG. 4 is a cross-sectional view showing a part of a coil body. [Figure 12] FIG. 4 is a cross-sectional view showing a part of a coil body. [Figure 13] 4 is a cross-sectional view showing a cross section of the coil body cut along a radial direction. FIG. [Figure 14] FIG. 4 is a cross-sectional view showing a vertical section laminate. [Figure 15] FIG. 4 is a cross-sectional view showing a vertical section laminate. [Figure 16] FIG. 4 is a cross-sectional view showing a vertical section laminate. [Figure 17] FIG. 2 is a diagram showing an expanded coil body, with the arrows indicating the direction of current flow. [Figure 18] FIG. 11 is a developed view of a coil body of a motor according to a second embodiment. [Figure 19] 13 is a schematic diagram in which some coils constituting a U-phase are offset from other coils in the axial direction. FIG. [Figure 20] FIG. 4 is a cross-sectional view showing a vertical section laminate. [Figure 21] FIG. 11 is a developed view of a coil body of a motor according to a third embodiment. [Figure 22] FIG. 13 is a diagram showing connections of a plurality of coils of a motor according to a fourth embodiment. [Figure 23] 13 is a schematic diagram in which some coils constituting a U-phase are offset from other coils in the axial direction. FIG. [Figure 24] FIG. 4 is a diagram showing an expanded coil body. [Diagram 25] FIG. 13 is a diagram showing connections of a plurality of coils of a motor according to a fifth embodiment. [Figure 26] 13 is a schematic diagram in which some coils constituting a U-phase are offset from other coils in the axial direction. FIG. [Figure 27] FIG. 4 is a diagram showing an expanded coil body. [Figure 28] FIG. 13 is a developed view of a coil body of a motor according to a sixth embodiment. [Figure 29] FIG. 13 is a diagram illustrating a delta connection of a motor according to a seventh embodiment. [Diagram 30] FIG. 2 is a diagram showing connections of multiple coils. [Diagram 31] FIG. 4 is a diagram showing an expanded coil body. [Diagram 32] FIG. 13 is a diagram showing a coil of a motor according to an eighth embodiment. [Diagram 33] FIG. 13 is a diagram showing a coil of a motor according to a ninth embodiment. [Diagram 34] FIG. 23 is a diagram showing a coil of a motor according to a tenth embodiment. [Diagram 35] FIG. 23 is a perspective view showing a coil body of a motor according to an eleventh embodiment. [Diagram 36] FIG. 4 is a diagram showing a coil and a connection terminal portion. [Figure 37] FIG. 4 is a diagram showing a coil and a connection terminal portion. [Figure 38] FIG. 2 is a diagram showing a coil and a substrate. [Figure 39] FIG. 23 is a perspective view showing a coil body of a motor according to a twelfth embodiment. [Diagram 40] FIG. 23 is a perspective view showing a coil body of a motor according to a thirteenth embodiment, illustrating a state before a plurality of connection portions are bent. [Diagram 41] FIG. 23 is an enlarged view showing a part of a coil body of a motor according to a fourteenth embodiment. [Diagram 42] FIG. 23 is an enlarged view showing a part of a coil body of a motor according to a fifteenth embodiment. [Diagram 43] FIG. 23 is a cross-sectional view showing a cross section of a coil body of a motor according to a sixteenth embodiment taken along a radial direction. [Diagram 44] FIG. 23 is an enlarged view showing a coil of a motor according to a seventeenth embodiment. [Diagram 45] FIG. 23 is a cross-sectional view showing a cross section of a coil body of a motor according to an eighteenth embodiment taken along a radial direction. [Figure 46] FIG. 23 is a cross-sectional view showing a cross section of a coil body of a motor according to a nineteenth embodiment taken along a radial direction. [Figure 47] FIG. 23 is a cross-sectional view showing a cross section of a coil body of a motor according to a twentieth embodiment taken along a radial direction. [Figure 48] FIG. 21 is a schematic diagram showing how some coils and other coils constituting the U-phase of a motor according to a twenty-first embodiment are offset in the axial direction. [Figure 49] FIG. 22 is a block diagram showing a motor control device including a motor according to a twenty-second embodiment. [Figure 50] 6 is a diagram showing a connection portion between the coil and a second connection line. FIG. [Figure 51] FIG. 23 is a cross-sectional view showing a cross section of a motor according to a twenty-third embodiment taken along the axial direction. [Figure 52] FIG. 24 is a perspective view showing a coil body of a motor according to a twenty-fourth embodiment. [Figure 53] 4 is a cross-sectional view showing a cross section of the coil body cut along the axial direction at a portion where a sensor is provided. FIG. [Figure 54] 4 is an enlarged view showing a portion of the coil body where a sensor is provided. FIG. [Figure 55] FIG. 25 is an enlarged view showing a part of a motor according to a twenty-fifth embodiment. [Figure 56] FIG. 26 is an enlarged view showing a portion of a motor according to a twenty-sixth embodiment. [Figure 57] FIG. 27 is an enlarged view showing a part of a motor according to a 27th embodiment. [Figure 58] FIG. 28 is an enlarged view showing a portion of a motor according to a twenty-eighth embodiment. [Figure 59] FIG. 29 is a cross-sectional view showing a cross section of a motor according to a 29th embodiment taken along the axial direction. [Figure 60] FIG. 30 is a cross-sectional view illustrating a schematic view of an insulator of a motor according to a 30th embodiment. [Figure 61] FIG. 31 is a diagram showing a coil body of a motor according to a thirty-first embodiment. [Figure 62] 10A to 10C are diagrams illustrating a process of overlapping each belt member. [Figure 63] A cross-sectional view showing a cross section of a motor of a thirty-second embodiment taken along the axial direction. [Figure 64] A cross-sectional view showing a cross section of a motor of a thirty-third embodiment taken along the axial direction. [Figure 65] A cross-sectional view showing a cross section of a motor of a thirty-fourth embodiment taken along the axial direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (First embodiment) A motor 10 according to a first embodiment of the present disclosure will be described with reference to Figs. 1 to 17. The directions of arrows Z, R, and C shown appropriately in the figures respectively indicate one side in the rotational axial direction, the outer side in the rotational radial direction, and one side in the rotational circumferential direction of a rotor 12 described later. Furthermore, hereinafter, when the axial direction, radial direction, or circumferential direction is simply indicated, it indicates the rotational axial direction, rotational radial direction, or rotational circumferential direction of the rotor 12 unless otherwise specified. Moreover, the motor 10 of this embodiment and the motors of each embodiment described later are examples of rotating electric machines.

[0010] 1 and 2, the motor 10 of this embodiment is an inner rotor type brushless motor in which a rotor 12 as a rotor is disposed radially inside a stator 14 as an armature and a stator. Note that the drawings shown in Figs. 1 and 2 are drawings of the motor 10 etc. shown as an example, and there are some parts which do not match the numbers of coils 16 and magnets 18 and the shapes of the details which will be described later.

[0011] The rotor 12 includes a rotating shaft 22 rotatably supported via a pair of bearings 20, a rotor core 24 formed in a bolt-type cylindrical shape and fixed to the rotating shaft 22, and a plurality of magnets 18 fixed to the radially outer surface of the rotor core 24.

[0012] The rotor core 24 includes a first cylindrical portion 24A to which the rotating shaft 22 is fixed by press-fitting, a second cylindrical portion 24B disposed radially outside the first cylindrical portion 24A and formed cylindrical, and a disk-shaped connecting plate portion 24C that radially connects one axial end of the first cylindrical portion 24A to one axial end of the second cylindrical portion 24B. The outer peripheral surface, which is the radially outer surface of the second cylindrical portion 24B, is formed into a cylindrical surface along the circumferential direction. A magnet 18, which will be described later, is fixed to the outer peripheral surface of the second cylindrical portion 24B.

[0013] The magnets 18 are formed using a magnetic compound having an intrinsic coercivity Hc of 400 kA / m or more and a residual magnetic flux density Br of 1.0 T or more. 11 TiN, Nd2Fe 14 B, SmFe 17 The rotor core 24 is formed of a magnetic compound such as N3, FeNi, etc. A plurality of magnets 18 are fixed to the outer peripheral surface of the second cylindrical portion 24B of the rotor core 24. The magnets 18 whose radially outer surfaces are N poles and the magnets 18 whose radially outer surfaces are S poles are arranged alternately in the circumferential direction. The number of magnets 18 may be appropriately set in consideration of the output required for the motor 10, etc.

[0014] Stator 14 includes stator core 26 as an armature core formed in an annular shape, insulator 28 attached to stator core 26 by adhesion, fitting, or the like, and coil body 32 attached to stator core 26 via insulator 28. As shown in Figures 1 to 3, stator 14 of the present embodiment has a teethless structure in which a part of stator core 26 is not disposed inside coil 16 which constitutes a part of coil body 32.

[0015] 1 and 2, the stator core 26 is formed in an annular shape using a soft magnetic material such as steel. The stator core 26 is disposed coaxially with the rotor 12, and the axial center position of the stator core 26 and the axial center position of the multiple magnets 18 fixed to the rotor core 24 coincide with each other in the axial direction.

[0016] 1, the insulator 28 is formed using, for example, a resin, which is an insulating material. The insulator 28 covers the radially inner surface of the stator core 26 when the insulator 28 is attached to the stator core 26. Note that the insulator 28 is not shown in FIG. 2.

[0017] As shown in FIG. 3, the coil body 32 of this embodiment includes a belt member 34 formed in a belt shape using an insulating material, and a plurality of coils 16 formed on the belt member 34.

[0018] As shown in Fig. 4, the belt member 34 is formed in a rectangular shape with the axial direction as the short side direction and the direction perpendicular to the axial direction as the long side direction. The thickness of the belt member 34 is set to a thickness that allows the belt member 34 to be curved in the circumferential direction. In this embodiment, the belt member 34 is wound multiple times in the circumferential direction, and the belt member 34 is cylindrical. In this embodiment, most of the belt member 34 has four layers in the radial direction.

[0019] As shown in Fig. 3, the multiple coils 16 are formed on a belt member 34. Then, as shown in Fig. 3 and Fig. 4, the belt member 34 is wound multiple times in the circumferential direction, so that the multiple coils 16 are arranged at predetermined positions in the circumferential and radial directions.

[0020] In this embodiment, the plurality of coils 16 constituting the U phase (U-phase coil group 42U), the plurality of coils 16 constituting the V phase (V-phase coil group 42V), and the plurality of coils 16 constituting the W phase (W-phase coil group 42W) are connected in a star connection as shown in Fig. 5. Specifically, the 24 coils 16 constituting the U-phase coil group 42U, the 24 coils 16 constituting the V-phase coil group 42V, and the 24 coils 16 constituting the W-phase coil group 42W are connected in a star connection as shown in Fig. 6.

[0021] Here, the 24 coils 16 constituting the U-phase coil group 42U will be numbered U11, U12, U13, U21, U22, U23, U31, U32, U33, U41, U42, U43, U51, U52, U53, U61, U62, U63, U71, U72, U73, U81, U82, and U83, respectively.

[0022] Furthermore, the 24 coils 16 constituting the V-phase coil group 42V will be numbered V11, V12, V13, V21, V22, V23, V31, V32, V33, V41, V42, V43, V51, V52, V53, V61, V62, V63, V71, V72, V73, V81, V82, and V83, respectively.

[0023] Furthermore, the 24 coils 16 constituting the W-phase coil group 42W will be numbered W11, W12, W13, W21, W22, W23, W31, W32, W33, W41, W42, W43, W51, W52, W53, W61, W62, W63, W71, W72, W73, W81, W82, and W83, respectively.

[0024] In the following description, a particular coil 16 may be indicated only by its coil number.

[0025] U11, U12, and U13 are wired in series. U21, U22, and U23 are wired in series. U31, U32, and U33 are wired in series. U41, U42, and U43 are wired in series. U51, U52, and U53 are wired in series. U61, U62, and U63 are wired in series. U71, U72, and U73 are wired in series. U81, U82, and U83 are wired in series.

[0026] In addition, the end of U11 opposite the side connected to U12, the end of U21 opposite the side connected to U22, the end of U31 opposite the side connected to U32, the end of U41 opposite the side connected to U42, the end of U51 opposite the side connected to U52, the end of U61 opposite the side connected to U62, the end of U71 opposite the side connected to U72, and the end of U81 opposite the side connected to U82 are connected to each other.

[0027] V11, V12, and V13 are connected in series. V21, V22, and V23 are connected in series. V31, V32, and V33 are connected in series. V41, V42, and V43 are connected in series. V51, V52, and V53 are connected in series. V61, V62, and V63 are connected in series. V71, V72, and V73 are connected in series. V81, V82, and V83 are connected in series.

[0028] In addition, the end of V11 opposite the side connected to V12, the end of V21 opposite the side connected to V22, the end of V31 opposite the side connected to V32, the end of V41 opposite the side connected to V42, the end of V51 opposite the side connected to V52, the end of V61 opposite the side connected to V62, the end of V71 opposite the side connected to V72, and the end of V81 opposite the side connected to V82 are connected to each other.

[0029] W11, W12, and W13 are connected in series. W21, W22, and W23 are connected in series. W31, W32, and W33 are connected in series. W41, W42, and W43 are connected in series. W51, W52, and W53 are connected in series. W61, W62, and W63 are connected in series. W71, W72, and W73 are connected in series. W81, W82, and W83 are connected in series.

[0030] In addition, the end of W11 opposite the side connected to W12, the end of W21 opposite the side connected to W22, the end of W31 opposite the side connected to W32, the end of W41 opposite the side connected to W42, the end of W51 opposite the side connected to W52, the end of W61 opposite the side connected to W62, the end of W71 opposite the side connected to W72, and the end of W81 opposite the side connected to W82 are connected to each other.

[0031] The end of U13 opposite to the side connected to U12, the end of V13 opposite to the side connected to V12, and the end of W13 opposite to the side connected to W12 are connected to each other.

[0032] The end of U23 opposite the side connected to U22, the end of V23 opposite the side connected to V22, and the end of W23 opposite the side connected to W22 are connected to each other.

[0033] The end of U33 opposite to the side connected to U32, the end of V33 opposite to the side connected to V32, and the end of W33 opposite to the side connected to W32 are connected to each other.

[0034] The end of U43 opposite the side connected to U42, the end of V43 opposite the side connected to V42, and the end of W43 opposite the side connected to W42 are connected to each other.

[0035] The end of U53 opposite to the side connected to U52, the end of V53 opposite to the side connected to V52, and the end of W53 opposite to the side connected to W52 are connected to each other.

[0036] The end of U63 opposite to the side connected to U62, the end of V63 opposite to the side connected to V62, and the end of W63 opposite to the side connected to W62 are connected to each other.

[0037] The end of U73 opposite the side connected to U72, the end of V73 opposite the side connected to V72, and the end of W73 opposite the side connected to W72 are connected to each other.

[0038] The end of U83 opposite the side connected to U82, the end of V83 opposite the side connected to V82, and the end of W83 opposite the side connected to W82 are connected to each other.

[0039] 7 shows a schematic diagram of a plurality of U-phase coils 16. Each coil 16 is formed in a hexagonal shape when viewed from the thickness direction of the band member 34. Each coil 16 has the same configuration as a three-turn coil in which a conducting wire is wound three times.

[0040] The portion constituting the first turn of the coil U11 includes a first straight portion A1 inclined toward the other circumferential side as it approaches the other axial side, a second straight portion A2 extending from the first straight portion A1 toward the other axial side, and a third straight portion A3 inclined toward one circumferential side as it approaches the other axial side from the second straight portion A2. The portion constituting the first turn of the coil U11 includes a fourth straight portion A4 inclined toward one circumferential side as it approaches the one axial side from the third straight portion A3, a fifth straight portion A5 extending from the fourth straight portion A4 toward the one axial side, and a sixth straight portion A6 inclined toward the other circumferential side as it approaches the one axial side from the fifth straight portion A5. Here, the first straight portion A1, the second straight portion A2, and the third straight portion A3 are formed on one surface 34A (see FIG. 10) of the band member 34. The fourth straight portion A4, the fifth straight portion A5 and the sixth straight portion A6 are formed on the other surface 34B (see FIG. 10) of the band member 34. Here, the third straight portion A3 and the fourth straight portion A4 are electrically connected via a through hole (not shown) that penetrates the band member 34. Note that the portion of the coil U11 formed on one surface 34A of the band member 34 is indicated by a solid line. Also, the portion of the coil U11 formed on the other surface 34B of the band member 34 is indicated by a dashed line.

[0041] The portion constituting the second turn of the coil U11 includes a first straight portion B1 that is inclined toward the other circumferential side as it moves from the sixth straight portion A6 of the first turn toward the other axial side, a second straight portion B2 that extends from the first straight portion B1 toward the other axial side, and a third straight portion B3 that is inclined toward one circumferential side as it moves from the second straight portion B2 toward the other axial side. The portion constituting the second turn of the coil U11 includes a fourth straight portion B4 that is inclined toward one circumferential side as it moves from the third straight portion B3 toward the one axial side, a fifth straight portion B5 that extends from the fourth straight portion B4 toward the one axial side, and a sixth straight portion B6 that is inclined toward the other circumferential side as it moves from the fifth straight portion B5 toward the one axial side. Here, the sixth straight portion A6 and the first straight portion B1 are electrically connected via a through hole (not shown) that penetrates the band member 34. The third straight portion B3 and the fourth straight portion B4 are electrically connected to each other via a through hole (not shown) that penetrates the belt member .

[0042] The portion constituting the third turn of the coil U11 includes a first straight portion C1 inclined toward the other circumferential side as it moves from the sixth straight portion B6 of the second turn toward the other axial side, a second straight portion C2 extending from the first straight portion C1 toward the other axial side, and a third straight portion C3 inclined toward one circumferential side as it moves from the second straight portion C2 toward the other axial side. The portion constituting the third turn of the coil U11 includes a fourth straight portion C4 inclined toward one circumferential side as it moves from the third straight portion C3 toward the one axial side, a fifth straight portion C5 extending from the fourth straight portion C4 toward the one axial side, and a sixth straight portion C6 inclined toward the other circumferential side as it moves from the fifth straight portion C5 toward the one axial side. Here, the sixth straight portion B6 and the first straight portion C1 are electrically connected via a through hole (not shown) penetrating the band member 34. The third straight portion C3 and the fourth straight portion C4 are electrically connected to each other via a through hole (not shown) that penetrates the belt member .

[0043] In addition, the portion constituting the second turn of the coil U11 (first straight portion B1 to sixth straight portion B6) is offset to one circumferential side from the portion constituting the first turn of the coil U11 (first straight portion A1 to sixth straight portion A6). Furthermore, the portion constituting the third turn of the coil U11 (first straight portion C1 to sixth straight portion C6) is offset to one circumferential side from the portion constituting the second turn of the coil U11 (first straight portion B1 to sixth straight portion B6).

[0044] 7 and 8, the other coils (U12 to U83) constituting the U phase are configured similarly to the coil U11. That is, all the coils (U11 to U83) constituting the U phase have the same configuration. The second straight portion A2, B2, C2 and the fifth straight portion A5, B5, C5 described above may be referred to as a vertical portion 36. The first straight portion A1, B1, C1 and the sixth straight portion A6, B6, C6 may be referred to as one coil end portion 38, and the third straight portion A3, B3, C3 and the fourth straight portion A4, B4, C4 may be referred to as the other coil end portion 38.

[0045] FIG. 8 is a schematic diagram showing some of the coils U11, etc. constituting the U phase and other coils U23, etc. offset in the axial direction.

[0046] 8 and 7, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U11 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U23, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U11 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U23 via the band member 34.

[0047] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U23 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U12, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U23 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U12 via the band member 34.

[0048] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U12 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U22, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U12 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U22 via the band member 34.

[0049] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U22 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U13, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U22 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U13 via the band member 34.

[0050] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U13 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U21, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U13 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U21 via the band member 34.

[0051] The coils U11, U23, U12, U22, U13, and U21 described above are arranged in this order on the first turn of the wound belt member 34. That is, U11, U23, U12, U22, U13, and U21 are arranged in this order on the side of the wound belt member 34 that is closest to the rotor 12.

[0052] Also, the sixth straight portion C6 of the coil U11 is connected to the first straight portion A1 of the coil U12. Also, the sixth straight portion C6 of the coil U12 is connected to the first straight portion A1 of the coil U13. Also, the sixth straight portion C6 of the coil U23 is connected to the first straight portion A1 of the coil U22. Also, the sixth straight portion C6 of the coil U22 is connected to the first straight portion A1 of the coil U21.

[0053] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U31 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U43, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U31 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U43 via the band member 34.

[0054] Further, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U43 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U32, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U43 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U32 via the band member 34.

[0055] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U32 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U42, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U32 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U42 via the band member 34.

[0056] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U42 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U33, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U42 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U33 via the band member 34.

[0057] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U33 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U41, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U33 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U41 via the band member 34.

[0058] The coils U31, U43, U32, U42, U33, and U41 described above are arranged in this order in the second turn of the wound band member 34. The fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U21 arranged in the first turn are arranged at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U31 arranged in the second turn, respectively.

[0059] Also, the sixth straight portion C6 of the coil U31 is connected to the first straight portion A1 of the coil U32. Also, the sixth straight portion C6 of the coil U32 is connected to the first straight portion A1 of the coil U33. Also, the sixth straight portion C6 of the coil U43 is connected to the first straight portion A1 of the coil U42. Also, the sixth straight portion C6 of the coil U42 is connected to the first straight portion A1 of the coil U41.

[0060] The coils U51 to U83 are also arranged on the band member 34 in the same relationship as the coils U11 to U41 described above. As a result, the coils U51, U63, U52, U62, U53, and U61 are arranged in this order on the third turn of the wound band member 34. The coils U71, U83, U72, U82, U73, and U81 are arranged in this order on the fourth turn of the wound band member 34.

[0061] 8 and 9, the coils V11-V83 constituting the V phase are arranged on the band member 34 in the same relationship as the coils U11-U83 constituting the U phase. The coils W11-W83 constituting the W phase are arranged on the band member 34 in the same relationship as the coils U11-U83 constituting the U phase. However, the coils V11-V83 constituting the V phase are connected such that the winding direction is opposite to that of the coils constituting the U and W phases.

[0062] Additionally, the coils V11-V83 constituting the V phase are offset to one side in the circumferential direction from the coils U11-U83 constituting the U phase. Furthermore, the coils W11-W83 constituting the W phase are offset to one side in the circumferential direction from the coils V11-V83 constituting the V phase.

[0063] Here, FIG. 10 shows a part of a cross section of the belt member 34 and the coils 16 cut along the line AA shown in FIG. 9. The cross section shown in FIG. 10 is a cross section of the end of the belt member 34 on the other side in the circumferential direction. As shown in FIG. 10, in this portion, U11T1, U11T2, U11T3, V11T3, V11T2, V11T1, W11T1, W11T2, and W11T3 are formed in this order on one side surface 34A of the belt member 34. Note that the end of the reference numerals indicating each coil is given a reference numeral T1 indicating the first turn, a reference numeral T2 indicating the second turn, and a reference numeral T3 indicating the third turn. For example, the portion indicating the first turn of the coil U11 is given a reference numeral U11T1, the portion indicating the second turn of the coil U11 is given a reference numeral U11T2, and the portion indicating the third turn of the coil U11 is given a reference numeral U11T3.

[0064] 11 shows a part of a cross section of the belt member 34 and the coils 16 cut along the line AA shown in FIG. 9. The cross section shown in FIG. 11 corresponds to the range indicated by the arrow E in FIG. 9. The cross section shown in FIG. 11 is a cross section of a portion adjacent to the cross section shown in FIG. 10 in the circumferential direction. In the cross section shown in FIG. 11, U23T3, U23T2, U23T1, V23T1, V23T2, V23T3, W23T3, W23T2, and W23T1 are formed in this order on the surface 34A of one side of the belt member 34. In the cross section shown in FIG. 11, U11T1, U11T2, U11T3, V11T3, V11T2, V11T1, W11T1, W11T2, and W11T3 are formed in this order on the surface 34B of the other side of the belt member 34.

[0065] Although not shown, even on one circumferential side of the cross section shown in Figure 11, the U-phase coils (U23, U12, U22...U82, U73, U81), V-phase coils (V23, V12, V22...V82, V73, V81), and W-phase coils (W23, W12, W22...W82, W73, W81) are formed on one surface 34A and the other surface 34B of the band member 34 in the same relationship as that shown in Figure 11.

[0066] Moreover, Fig. 12 shows a part of a cross section of the band member 34 and the multiple coils 16 cut along the line AA shown in Fig. 9. The cross section shown in Fig. 12 is a cross section of an end portion on one circumferential side of the band member 34. As shown in Fig. 12, in this portion, U81T1, U81T2, U81T3, V81T3, V81T2, V81T1, W81T1, W81T2, and W81T3 are formed in this order on the surface 34B on the other side of the band member 34.

[0067] As shown in FIG. 9, each coil 16 is connected via a connection pattern section 40 provided on one axial side of the belt member 34. The portion of the connection pattern section 40 formed on one surface 34A of the belt member 34 is indicated by a solid line. The portion of the connection pattern section 40 formed on the other surface 34B of the belt member 34 is indicated by a dashed line. The connection pattern section 40 indicated by reference numeral 44 indicates a neutral point. The connection pattern section 40 indicated by reference numeral 43 indicates a connection section connected to a control section (not shown). The connection between each coil 16 may be performed using a bus bar or a printed circuit board that is a separate member.

[0068] As described above, the band member 34 is wound multiple times in the circumferential direction, thereby disposing the multiple coils 16 at predetermined positions in the circumferential and radial directions. Fig. 13 shows a part of a cross section taken along the radial direction of the coil body 32 around which the band member 34 is wound. Note that this cross section is a cross section of a portion corresponding to the vertical portion 36 (see Fig. 7) of each coil 16.

[0069] In the cross section shown in FIG. 13, the vertical parts 36 of the coils 16 are arranged at equal intervals in the circumferential direction in a state where they are stacked in the radial direction. In addition, in a state where the vertical parts 36 of the coils 16 are stacked in the radial direction, the first insulating layer 54A or the second insulating layer 54B is interposed between a pair of vertical parts 36 adjacent in the radial direction. The first insulating layer 54A is the band member 34. In addition, the second insulating layer 54B is an insulating film formed so as to cover the coil 16 formed on the band member 34, and is, for example, an insulating paint. Here, what is formed by stacking the vertical parts 36 of the coils 16 in the radial direction is called a vertical part laminate 56. This vertical part laminate 56 has a rectangular cross section in which the radial dimension R1 is larger than the circumferential dimension S1 in a cross section cut along the radial direction. In addition, in this embodiment, the circumferential dimension S2 of the vertical parts 36 constituting the vertical part laminate 56 is larger than the radial dimension R2.

[0070] Here, Figures 14, 15, and 16 show a vertical section laminate 56 whose radially inner end is U23T3, a vertical section laminate 56 whose radially inner end is U23T2, and a vertical section laminate 56 whose radially inner end is U23T1, respectively.

[0071] As shown in Figure 14, in the vertical section stack 56, whose radially inner end is U23T3, the vertical sections 36 are arranged in sequence toward the radially outer side, namely U23T3, U11T1, U43T3, U31T1, U63T3, U51T1, U83T3, and U71T1.

[0072] As shown in Figure 15, in the vertical section stack 56, whose radially inner end is U23T2, the vertical sections 36 are arranged in sequence toward the radially outer side, namely U23T2, U11T2, U43T2, U31T2, U63T2, U51T2, U83T2, ​​and U71T2.

[0073] As shown in Figure 16, in the vertical section stack 56, whose radially inner end is U23T1, the vertical sections 36 are arranged in sequence toward the radially outer side, namely U23T1, U11T3, U43T1, U31T3, U63T1, U51T3, U83T1, and U71T3.

[0074] 13 (also see FIGS. 14 to 16), a vertical section laminate 56 having a radially inner end portion U23T3, a vertical section laminate 56 having a radially inner end portion U23T2, and a vertical section laminate 56 having a radially inner end portion U23T1 are arranged in this order in the circumferential direction to constitute a U-phase conductor group 46U. In this embodiment, the circumferential dimension S3 of the radially inner end portion of the U-phase conductor group 46U is set to be larger than the radial dimension R1 of the vertical section laminate 56 constituting the U-phase conductor group 46U.

[0075] The vertical portions 36 of the other coils 16 also form the vertical portion laminate 56 according to the same rule as above. The V-phase conductor group 46V and the W-phase conductor group 46W are also formed according to the same rule as the U-phase conductor group 46U. The U-phase conductor group 46U, the V-phase conductor group 46V and the W-phase conductor group 46W are arranged in this order along the circumferential direction.

[0076] (Actions and Effects of the Present Embodiment) Next, the operation and effects of this embodiment will be described.

[0077] As shown in Figs. 1, 2, 5, 9 and 17, in the motor 10 of this embodiment, a rotating magnetic field is generated on the inner circumference of the stator 14 by switching the energization of the U-phase coil group 42U, the V-phase coil group 42V and the W-phase coil group 42W which constitute a part of the stator 14. This causes the rotor 12 to rotate. In Fig. 17, the arrows I indicate the current flowing through the vertical portion 36 (conductor groups 46U, 46V, 46W) of each coil 16 when a voltage is applied with the U-phase coil group 42U as a positive voltage and the V-phase coil group 42V and the W-phase coil group 42W as a negative voltage. Also, the circumferential positions of the multiple magnets 18 which constitute a part of the rotor 12 are shown. The letters "S" and "N" attached to the magnets 18 indicate the polarity of the surface on the coil body 32 side.

[0078] In this embodiment, the coil body 32 includes a band member 34 formed in a band shape using an insulating material, and a plurality of coils 16 formed on the band member 34. The band member 34 is wound multiple times in the circumferential direction, so that the plurality of coils 16 are disposed at predetermined positions in the circumferential and radial directions. This configuration makes it possible to prevent the coil body 32 from becoming large in size in the radial direction. As a result, it is possible to prevent the motor 10 from becoming large in size.

[0079] As shown in Figs. 6 to 9 and Figs. 13 to 16, the configuration of this embodiment is such that a vertical section laminate 56 is formed in a cross section obtained by cutting the band member 34 and the multiple coils 16 along the radial direction. In addition, the vertical section laminate 56 is configured such that the vertical sections 36 having different potentials are adjacent to each other in the radial direction when the multiple coils 16 are energized. In particular, the vertical section laminate 56 shown in Figs. 14 and 16 is configured such that the vertical sections 36 having different numbers of turns (T1 to T3) are arranged adjacent to each other in the radial direction, so that the potential difference between the vertical sections 36 adjacent to each other in the radial direction is large. Specifically, when multiple coils 16 are connected in series, such as the coils U11, U12, U13, etc. of this embodiment, the potential difference from one end to the other end is V, and the number of coils connected in series is s (s=3 in this embodiment), the potential difference between the vertical sections 36 adjacent to each other in the radial direction is equal to or larger than 1.5 x V / s. As a result, in this embodiment, the torque of the motor 10 can be improved compared to a motor configured in such a way that vertical portions 36 that have no potential difference when current is applied to the multiple coils 16 are adjacent to each other in the radial direction. Note that in a configuration in which the coils 16 are not connected in series, such as the motor of a fifth embodiment described below, it is preferable to have portions in which the potential difference between radially adjacent vertical portions 36 is equal to or greater than V / 2.

[0080] 13, in this embodiment, the circumferential dimension S3 of the radially inner end (the magnet 18 side of the rotor 12) of the conductor groups 46U, 46V, 46W of each phase is set to be larger than the radial dimension R1 of the vertical laminate 56 constituting the conductor groups 46U, 46V, 46W of each phase. By setting it in this way, the radial thickness of the coil body 32 can be reduced, so that the gap between the magnet 18 of the rotor 12 and the stator core 26 can be reduced. In other words, the magnetic resistance can be reduced. This can further improve the torque of the motor 10.

[0081] In this embodiment, the radial dimension R1 of the vertical lamination body 56 is larger than the circumferential dimension S1. This makes it possible to reduce the area where the vertical lamination body 56 faces the magnets 18 of the rotor 12 while ensuring the cross-sectional area of ​​the vertical lamination body 56. This makes it possible to suppress eddy currents that are generated in the vertical lamination body 56 by radial magnetic flux. As a result, the torque of the motor 10 can be further improved.

[0082] Furthermore, in this embodiment, the circumferential dimension S2 of the vertical portion 36 constituting the vertical portion laminate 56 is larger than the radial dimension R2. This makes it possible to suppress eddy currents that are generated in the vertical portion laminate 56 due to leakage magnetic flux between the magnets 18 of the rotor 12. As a result, the torque of the motor 10 can be further improved.

[0083] Second embodiment Next, a motor according to a second embodiment will be described. In the motor according to the second embodiment, the members and parts corresponding to those of the motor 10 according to the first embodiment are denoted by the same reference numerals as those of the motor 10 according to the first embodiment, and the description thereof may be omitted.

[0084] Fig. 18 is a diagram corresponding to Fig. 9 and shows the coil body 32 of the motor of the second embodiment. Note that Fig. 18 shows only a portion of the coil body 32 that corresponds to the first turn of the belt member 34. Also, like the motor 10 of the first embodiment, the motor of this embodiment is configured such that the belt member 34 has four turns.

[0085] 19 is a diagram corresponding to FIG. 8 showing six U-phase coils 16 formed on the first turn of the band member 34. As shown in this diagram, in this embodiment, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U11 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U12, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U11 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U12 via the band member 34.

[0086] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U12 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U13, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U12 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U13 via the band member 34.

[0087] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U13 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U23, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U13 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U23 via the band member 34.

[0088] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U23 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U22, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U23 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U22 via the band member 34.

[0089] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U22 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U21, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U22 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U21 via the band member 34.

[0090] The coils U11, U12, U13, U23, U22, and U21 described above are arranged in this order on the first turn of the wound belt member 34. That is, the coils U11, U12, U13, U23, U22, and U21 are arranged in this order on the side of the wound belt member 34 that is closest to the rotor 12.

[0091] Here, in the motor of this embodiment, the sixth straight portion C6 of the coil U11 is connected to the sixth straight portion C6 of the coil U12. Also, the first straight portion A1 of the coil U12 is connected to the first straight portion A1 of the coil U13. Also, the sixth straight portion C6 of the coil U23 is connected to the sixth straight portion C6 of the coil U22. Also, the first straight portion A1 of the coil U22 is connected to the first straight portion A1 of the coil U21. As a result, in this embodiment, although the physical configuration of the coils U11, U12, U13, U23, U22, and U21 is a coil wound in one direction (a left-handed coil, which will be described later), when the coils U11, U12, U13, U23, U22, and U21 are energized, the coils U12, U23, and U21 function in the same manner as a coil wound in the opposite direction to the coils U11, U13, and U22 (a right-handed coil). For convenience of explanation, the coils corresponding to coils U11, U13, and U22 will be referred to as "left-handed coils," and the coils corresponding to coils U12, U23, and U21 will be referred to as "right-handed coils." In Fig. 19, lines (bars) are added to the symbols of coils U12, U23, and U21, which are right-handed coils. In this embodiment, the left-handed coils and the right-handed coils are arranged alternately along the circumferential direction.

[0092] Although not shown, the coils U31, U32, U33, U43, U42, and U41 arranged in the second turn of the band member 34 are arranged in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the band member 34. The coils U51, U52, U53, U63, U62, and U61 arranged in the third turn of the band member 34 are arranged in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the band member 34. The coils U71, U72, U73, U83, U82, and U81 arranged in the fourth turn of the band member 34 are arranged in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the band member 34.

[0093] The coils V11-V83 constituting the V phase are also arranged on the band member 34 in the same relationship as the coils U11-U83 constituting the U phase. The coils W11-W83 constituting the W phase are also arranged on the band member 34 in the same relationship as the coils U11-U83 constituting the U phase. However, the coils V11-V83 constituting the V phase are connected such that the winding direction is opposite to that of the coils constituting the U and W phases.

[0094] In the motor of the second embodiment described above, the U-phase coils 16 are arranged in a line in the circumferential direction, and the U-phase coils 16 are physically wound in one direction. In addition, the U-phase coils 16 are connected so that when current is applied to the U-phase coils 16, the U-phase coils 16 function in the same manner as the U-phase coils 16 that are left-handed coils and the U-phase coils 16 that are right-handed coils are arranged alternately. The V-phase coils 16 and the W-phase coils 16 are also similar to the U-phase coils 16. As a result, in this embodiment, as shown in FIG. 20, the potential difference between the vertical parts 36 stacked in the radial direction in the vertical part laminate 56 can be reduced. This can improve the reliability of the insulation between the vertical parts 36 stacked in the radial direction. This can reduce the thickness of the first insulating layer 54A and the second insulating layer 54B.

[0095] Specifically, Fig. 20 shows a vertical section laminate 56 whose radially inner end is U12T3. As shown in this figure, even in a configuration in which vertical sections 36 with different numbers of turns (T1 to T3) are arranged adjacent to each other in the radial direction, the potential difference between vertical sections 36 laminated in the radial direction, such as U12T3 and U11T1, can be made smaller than in the motor 10 of the first embodiment described above. Also, since the distance between the coils to be connected is shorter than in the motor 10 of the first embodiment, the electrical resistance can be kept low and the connection space can be made smaller.

[0096] Third embodiment Next, a motor according to a third embodiment will be described. In the motor according to the third embodiment, the members and parts corresponding to the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those corresponding to the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0097] Fig. 21 shows a diagram corresponding to Fig. 18, illustrating the coil body 32 of the motor of the third embodiment. As shown in this diagram, the configuration of the coil body 32 of the motor of this embodiment is similar to that of the coil body 32 of the motor of the second embodiment (see Fig. 18), except that the connection portion 43 and the neutral point 44 are interchanged. In this way, the positions of the neutral point 44 and the connection portion 43 may be appropriately set in consideration of the positional relationship between the motor and a control unit to which the connection portion 43 is connected, etc.

[0098] (Fourth embodiment) Next, a motor according to a fourth embodiment will be described. In the motor according to the fourth embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0099] As shown in FIG. 22, the coil body 32 of the motor of the fourth embodiment is star-connected, with 24 coils 16 constituting the U-phase coil group 42U, 24 coils 16 constituting the V-phase coil group 42V, and 24 coils 16 constituting the W-phase coil group 42W.

[0100] Here, the 24 coils 16 constituting the U-phase coil group 42U will be numbered U11, U12, U13, U14, U15, U16, U21, U22, U23, U24, U25, U26, U31, U32, U33, U34, U35, U36, U41, U42, U43, U44, U45, and U46, respectively.

[0101] Furthermore, the 24 coils 16 constituting the V-phase coil group 42V will be numbered V11, V12, V13, V14, V15, V16, V21, V22, V23, V24, V25, V26, V31, V32, V33, V34, V35, V36, V41, V42, V43, V44, V45, and V46, respectively.

[0102] Furthermore, the 24 coils 16 constituting the W-phase coil group 42W will be numbered W11, W12, W13, W14, W15, W16, W21, W22, W23, W24, W25, W26, W31, W32, W33, W34, W35, W36, W41, W42, W43, W44, W45, and W46, respectively.

[0103] In the following description, a particular coil 16 may be indicated only by its coil number.

[0104] U11, U12, U13, U14, U15, and U16 are wired in series. U21, U22, U23, U24, U25, and U26 are wired in series. U31, U32, U33, U34, U35, and U36 are wired in series. U41, U42, U43, U44, U45, and U46 are wired in series.

[0105] In addition, the end of U11 opposite the side connected to U12, the end of U21 opposite the side connected to U22, the end of U31 opposite the side connected to U32, and the end of U41 opposite the side connected to U42 are connected to each other.

[0106] V11, V12, V13, V14, V15, and V16 are connected in series. V21, V22, V23, V24, V25, and V26 are connected in series. V31, V32, V33, V34, V35, and V36 are connected in series. V41, V42, V43, V44, V45, and V46 are connected in series.

[0107] In addition, the end of V11 opposite the side connected to V12, the end of V21 opposite the side connected to V22, the end of V31 opposite the side connected to V32, and the end of V41 opposite the side connected to V42 are connected to each other.

[0108] W11, W12, W13, W14, W15, and W16 are connected in series. W21, W22, W23, W24, W25, and W26 are connected in series. W31, W32, W33, W34, W35, and W36 are connected in series. W41, W42, W43, W44, W45, and W46 are connected in series.

[0109] In addition, the end of W11 opposite the side connected to W12, the end of W21 opposite the side connected to W22, the end of W31 opposite the side connected to W32, and the end of W41 opposite the side connected to W42 are connected to each other.

[0110] The end of U16 opposite the side connected to U15, the end of V16 opposite the side connected to V15, and the end of W16 opposite the side connected to W15 are connected to each other.

[0111] The end of U26 opposite the side connected to U25, the end of V26 opposite the side connected to V25, and the end of W26 opposite the side connected to W25 are connected to each other.

[0112] The end of U36 opposite the side connected to U35, the end of V36 opposite the side connected to V35, and the end of W36 opposite the side connected to W35 are connected to each other.

[0113] The end of U46 opposite the side connected to U45, the end of V46 opposite the side connected to V45, and the end of W46 opposite the side connected to W45 are connected to each other.

[0114] 23 is a diagram corresponding to FIG. 19 showing six U-phase coils 16 formed on the first turn of the band member 34. As shown in this diagram, in this embodiment, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U11 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U12, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U11 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U12 via the band member 34.

[0115] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U12 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U13, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U12 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U13 via the band member 34.

[0116] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U13 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U14, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U13 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U14 via the band member 34.

[0117] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U14 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U15, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U14 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U15 via the band member 34.

[0118] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U15 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U16, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U15 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U16 via the band member 34.

[0119] The coils U11, U12, U13, U14, U15, and U16 described above are arranged in this order on the first turn of the wound belt member 34. That is, the coils U11, U12, U13, U14, U15, and U16 are arranged in this order on the side of the wound belt member 34 that is closest to the rotor 12.

[0120] Here, in the motor of this embodiment, the sixth straight portion C6 of the coil U11 is connected to the sixth straight portion C6 of the coil U12. Also, the first straight portion A1 of the coil U12 is connected to the first straight portion A1 of the coil U13. Also, the sixth straight portion C6 of the coil U13 is connected to the sixth straight portion C6 of the coil U14. Also, the first straight portion A1 of the coil U14 is connected to the first straight portion A1 of the coil U15. Also, the sixth straight portion C6 of the coil U15 is connected to the sixth straight portion C6 of the coil U16.

[0121] Although not shown, the coils U21, U22, U23, U24, U25, and U26 arranged in the second turn of the belt member 34 are arranged in the same relationship as the coils U11, U12, U13, U14, U15, and U16 arranged in the first turn of the belt member 34. The coils U31, U32, U33, U34, U35, and U36 arranged in the third turn of the belt member 34 are arranged in the same relationship as the coils U11, U12, U13, U14, U15, and U16 arranged in the first turn of the belt member 34. The coils U41, U42, U43, U44, U45, and U46 arranged in the fourth turn of the belt member 34 are arranged in the same relationship as the coils U11, U12, U13, U14, U15, and U16 arranged in the first turn of the belt member 34.

[0122] 22, 23 and 24, the coils V11 to V46 constituting the V phase are arranged on the band member 34 in the same relationship as the coils U11 to U46 constituting the U phase. The coils W11 to W46 constituting the W phase are arranged on the band member 34 in the same relationship as the coils U11 to U46 constituting the U phase. However, the coils V11 to V46 constituting the V phase are connected such that the winding direction is opposite to that of the coils constituting the U and W phases. Note that FIG. 24 corresponds to FIG. 18 showing the coil body 32 of the motor of the fourth embodiment.

[0123] In the motor of the fourth embodiment described above, the number of coils 16 connected in series in each phase is greater than in the motors 10 of the previous embodiments, etc. As a result, the motor of the fourth embodiment can have better output characteristics at low rotation speeds than the motors 10 of the previous embodiments, etc.

[0124] Furthermore, in the motor of the fourth embodiment, the number of circuits connected in parallel is smaller than in the motors 10 and the like of the respective embodiments described above. This is equivalent to a reduction in the total cross-sectional area of ​​the vertical section laminate 56 (not shown) (see FIG. 20 and the like) in the motor of the fourth embodiment compared to the motors 10 and the like of the respective embodiments described above. This allows the motor of the fourth embodiment to be a motor with lower current specifications compared to the motors 10 and the like of the respective embodiments described above.

[0125] Fifth embodiment Next, a motor according to a fifth embodiment will be described. In the motor according to the fifth embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0126] 25, in the coil body 32 of the motor of the fifth embodiment, 24 coils 16 constituting a U-phase coil group 42U, 24 coils 16 constituting a V-phase coil group 42V, and 24 coils 16 constituting a W-phase coil group 42W are star-connected. Also, in the motor of the fifth embodiment, the coils 16 are not connected in series to each other.

[0127] Here, the 24 coils 16 constituting the U-phase coil group 42U will be numbered U1a, U1b, U1c, U1d, U1e, U1f, U2a, U2b, U2c, U2d, U2e, U2f, U3a, U3b, U3c, U3d, U3e, U3f, U4a, U4b, U4c, U4d, U4e, and U4f, respectively.

[0128] Here, the 24 coils 16 constituting the V-phase coil group 42V will be numbered V1a, V1b, V1c, V1d, V1e, V1f, V2a, V2b, V2c, V2d, V2e, V2f, V3a, V3b, V3c, V3d, V3e, V3f, V4a, V4b, V4c, V4d, V4e, and V4f, respectively.

[0129] Here, the 24 coils 16 constituting the W-phase coil group 42W will be numbered W1a, W1b, W1c, W1d, W1e, W1f, W2a, W2b, W2c, W2d, W2e, W2f, W3a, W3b, W3c, W3d, W3e, W3f, W4a, W4b, W4c, W4d, W4e, and W4f, respectively.

[0130] In the following description, a particular coil 16 may be indicated only by its coil number.

[0131] One end of U1a, one end of U2a, one end of U3a, and one end of U4a are wired together and connected to a U-phase connection part 43. One end of V1a, one end of V2a, one end of V3a, and one end of V4a are wired together and connected to a V-phase connection part 43. One end of W1a, one end of W2a, one end of W2a, and one end of W2a are wired together and connected to a W-phase connection part 43.

[0132] The other end of U1a, the other end of V1a, and the other end of W1a are wired together. Also, the other end of U2a, the other end of V2a, and the other end of W2a are wired together. The other end of U3a, the other end of V3a, and the other end of W3a are wired together. The other end of U4a, the other end of V4a, and the other end of W4a are wired together.

[0133] In addition, U1b, U2b, U3b, U4b, V1b, V2b, V3b, V4b, W1b, W2b, W3b, and W4b are connected in the same relationship as U1a, U2a, U3a, U4a, V1a, V2a, V3a, V4a, W1a, W2a, W3a, and W4a.

[0134] In addition, U1c, U2c, U3c, U4c, V1c, V2c, V3c, V4c, W1c, W2c, W3c, and W4c are connected in the same relationship as U1a, U2a, U3a, U4a, V1a, V2a, V3a, V4a, W1a, W2a, W3a, and W4a.

[0135] In addition, U1d, U2d, U3d, U4d, V1d, V2d, V3d, V4d, W1d, W2d, W3d, and W4d are connected in the same relationship as U1a, U2a, U3a, U4a, V1a, V2a, V3a, V4a, W1a, W2a, W3a, and W4a.

[0136] In addition, U1e, U2e, U3e, U4e, V1e, V2e, V3e, V4e, W1e, W2e, W3e, and W4e are connected in the same relationship as U1a, U2a, U3a, U4a, V1a, V2a, V3a, V4a, W1a, W2a, W3a, and W4a.

[0137] In addition, U1f, U2f, U3f, U4f, V1f, V2f, V3f, V4f, W1f, W2f, W3f, and W4f are connected in the same relationship as U1a, U2a, U3a, U4a, V1a, V2a, V3a, V4a, W1a, W2a, W3a, and W4a.

[0138] 26 is a diagram corresponding to FIG. 19 showing six U-phase coils 16 formed on the first turn of the band member 34. As shown in this diagram, in this embodiment, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1a are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1b, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1a overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1b via the band member 34.

[0139] The fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1b are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1c, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1b overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1c via the band member 34.

[0140] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1c are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1d, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1c overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1d via the band member 34.

[0141] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1d are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1e, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1d overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1e via the band member 34.

[0142] Furthermore, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1e are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1f, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil U1e overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil U1f via the band member 34.

[0143] The coils U1a, U1b, U1c, U1d, U1e, and U1f described above are arranged in this order on the first turn of the wound belt member 34. That is, the coils U1a, U1b, U1c, U1d, U1e, and U1f are arranged in this order on the side of the wound belt member 34 that is closest to the rotor 12.

[0144] Although not shown, the coils U2a, U2b, U2c, U2d, U2e, and U2f arranged in the second turn of the band member 34 are arranged in the same relationship as the coils U1a, U1b, U1c, U1d, U1e, and U1f arranged in the first turn of the band member 34. The coils U3a, U3b, U3c, U3d, U3e, and U3f arranged in the third turn of the band member 34 are arranged in the same relationship as the coils U1a, U1b, U1c, U1d, U1e, and U1f arranged in the first turn of the band member 34. The coils U4a, U4b, U4c, U4d, U4e, and U4f arranged in the fourth turn of the band member 34 are arranged in the same relationship as the coils U1a, U1b, U1c, U1d, U1e, and U1f arranged in the first turn of the band member 34.

[0145] 25, 26, and 27, the coils V1a-V4f constituting the V phase are arranged on the band member 34 in the same relationship as the coils U1a-U4f constituting the U phase. The coils W1a-W4f constituting the W phase are arranged on the band member 34 in the same relationship as the coils U1a-U4f constituting the U phase. However, the coils V1a-V4f constituting the V phase are connected such that the winding direction is opposite to that of the coils constituting the U and W phases. Note that FIG. 27 corresponds to FIG. 18 showing the coil body 32 of the motor of the fifth embodiment.

[0146] The motor of the fifth embodiment described above is configured without coils 16 connected in series in each phase, as compared with the motors 10 of the previous embodiments. As a result, in the motor of the fifth embodiment, the cross-sectional area of ​​each vertical laminate 56 (not shown) (see FIG. 20, etc.) is reduced. As a result, in the motor of the fourth embodiment, the facing area of ​​each vertical laminate 56 facing the magnet 18 of the rotor 12 can be reduced as compared with the motors 10 of the previous embodiments, and eddy currents can be effectively suppressed.

[0147] Sixth embodiment Next, a motor according to a sixth embodiment will be described. In the motor according to the sixth embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0148] Fig. 28 shows a diagram corresponding to Fig. 27, illustrating the coil body 32 of the motor of the sixth embodiment. As shown in this diagram, the configuration of the coil body 32 of the motor of the sixth embodiment is similar to that of the coil body 32 of the motor of the fifth embodiment (see Fig. 27), except that the connection portion 43 side of the connection pattern portion 40 is connected via a coupling portion 40A. By configuring in this manner, in the motor of the sixth embodiment, it is possible to prevent the configuration of the connection portion 43 side from becoming complicated, compared to the motor of the fifth embodiment.

[0149] Seventh embodiment Next, a motor according to a seventh embodiment will be described. In the motor according to the seventh embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0150] As shown in Fig. 29, in the motor of the seventh embodiment, the multiple coils 16 constituting the UV phase (UV-phase coil group 42UV), the multiple coils 16 constituting the VW phase (VW-phase coil group 42VW), and the multiple coils 16 constituting the WU phase (WU-phase coil group 42WU) are connected in a delta connection. Specifically, as shown in Fig. 30, 24 coils 16 constituting the UV-phase coil group 42UV, 24 coils 16 constituting the VW-phase coil group 42VW, and 24 coils 16 constituting the WU-phase coil group 42WU are connected in a delta connection.

[0151] Here, the 24 coils 16 that make up the UV phase coil group 42UV will be numbered UV11, UV12, UV13, UV21, UV22, UV23, UV31, UV32, UV33, UV41, UV42, UV43, UV51, UV52, UV53, UV61, UV62, UV63, UV71, UV72, UV73, UV81, UV82, and UV83, respectively.

[0152] Additionally, the 24 coils 16 constituting the VW-phase coil group 42VW will be numbered VW11, VW12, VW13, VW21, VW22, VW23, VW31, VW32, VW33, VW41, VW42, VW43, VW51, VW52, VW53, VW61, VW62, VW63, VW71, VW72, VW73, VW81, VW82, and VW83, respectively.

[0153] In addition, the 24 coils 16 that make up the WU phase coil group 42WU will be numbered WU11, WU12, WU13, WU21, WU22, WU23, WU31, WU32, WU33, WU41, WU42, WU43, WU51, WU52, WU53, WU61, WU62, WU63, WU71, WU72, WU73, WU81, WU82, and WU83, respectively.

[0154] In the following description, a particular coil 16 may be indicated only by its coil number.

[0155] UV11, UV12, and UV13 are connected in series. UV21, UV22, and UV23 are connected in series. UV31, UV32, and UV33 are connected in series. UV41, UV42, and UV43 are connected in series. UV51, UV52, and UV53 are connected in series. UV61, UV62, and UV63 are connected in series. UV71, UV72, and UV73 are connected in series. UV81, UV82, and UV83 are connected in series.

[0156] In addition, the end of UV11 opposite to the side connected to UV12 is connected to the U-phase connection part 43 side. In addition, the end of UV21 opposite to the side connected to UV22 is connected to the U-phase connection part 43 side. In addition, the end of UV31 opposite to the side connected to UV32 is connected to the U-phase connection part 43 side. In addition, the end of UV41 opposite to the side connected to UV42 is connected to the U-phase connection part 43 side. In addition, the end of UV51 opposite to the side connected to UV52 is connected to the U-phase connection part 43 side. In addition, the end of UV61 opposite to the side connected to UV62 is connected to the U-phase connection part 43 side. In addition, the end of UV71 opposite to the side connected to UV72 is connected to the U-phase connection part 43 side. In addition, the end of UV81 opposite to the side connected to UV82 is connected to the U-phase connection part 43 side.

[0157] In addition, the end of UV13 opposite to the side connected to UV12 is connected to the V-phase connection part 43 side. In addition, the end of UV23 opposite to the side connected to UV22 is connected to the V-phase connection part 43 side. In addition, the end of UV33 opposite to the side connected to UV32 is connected to the V-phase connection part 43 side. In addition, the end of UV43 opposite to the side connected to UV42 is connected to the V-phase connection part 43 side. In addition, the end of UV53 opposite to the side connected to UV52 is connected to the V-phase connection part 43 side. In addition, the end of UV63 opposite to the side connected to UV62 is connected to the V-phase connection part 43 side. In addition, the end of UV73 opposite to the side connected to UV72 is connected to the V-phase connection part 43 side. In addition, the end of UV83 opposite to the side connected to UV82 is connected to the V-phase connection part 43 side.

[0158] VW11, VW12, and VW13 are connected in series. VW21, VW22, and VW23 are connected in series. VW31, VW32, and VW33 are connected in series. VW41, VW42, and VW43 are connected in series. VW51, VW52, and VW53 are connected in series. VW61, VW62, and VW63 are connected in series. VW71, VW72, and VW73 are connected in series. VW81, VW82, and VW83 are connected in series.

[0159] In addition, the end of VW11 opposite to the side connected to VW12 is connected to the V-phase connection part 43 side. In addition, the end of VW21 opposite to the side connected to VW22 is connected to the V-phase connection part 43 side. In addition, the end of VW31 opposite to the side connected to VW32 is connected to the V-phase connection part 43 side. In addition, the end of VW41 opposite to the side connected to VW42 is connected to the V-phase connection part 43 side. In addition, the end of VW51 opposite to the side connected to VW52 is connected to the V-phase connection part 43 side. In addition, the end of VW61 opposite to the side connected to VW62 is connected to the V-phase connection part 43 side. In addition, the end of VW71 opposite to the side connected to VW72 is connected to the V-phase connection part 43 side. Further, the end of VW81 opposite to the end connected to VW82 is connected to the V-phase connection portion 43 side.

[0160] In addition, the end of VW13 opposite to the side connected to VW12 is connected to the W-phase connection part 43 side. In addition, the end of VW23 opposite to the side connected to VW22 is connected to the W-phase connection part 43 side. In addition, the end of VW33 opposite to the side connected to VW32 is connected to the W-phase connection part 43 side. In addition, the end of VW43 opposite to the side connected to VW42 is connected to the W-phase connection part 43 side. In addition, the end of VW53 opposite to the side connected to VW52 is connected to the W-phase connection part 43 side. In addition, the end of VW63 opposite to the side connected to VW62 is connected to the W-phase connection part 43 side. In addition, the end of VW73 opposite to the side connected to VW72 is connected to the W-phase connection part 43 side. Further, the end of VW83 opposite to the end connected to VW82 is connected to the W-phase connection portion 43 side.

[0161] WU11, WU12, and WU13 are connected in series. WU21, WU22, and WU23 are connected in series. WU31, WU32, and WU33 are connected in series. WU41, WU42, and WU43 are connected in series. WU51, WU52, and WU53 are connected in series. WU61, WU62, and WU63 are connected in series. WU71, WU72, and WU73 are connected in series. WU81, WU82, and WU83 are connected in series.

[0162] In addition, the end of WU11 opposite to the side connected to WU12 is connected to the W-phase connection part 43 side. In addition, the end of WU21 opposite to the side connected to WU22 is connected to the W-phase connection part 43 side. In addition, the end of WU31 opposite to the side connected to WU32 is connected to the W-phase connection part 43 side. In addition, the end of WU41 opposite to the side connected to WU42 is connected to the W-phase connection part 43 side. In addition, the end of WU51 opposite to the side connected to WU52 is connected to the W-phase connection part 43 side. In addition, the end of WU61 opposite to the side connected to WU62 is connected to the W-phase connection part 43 side. In addition, the end of WU71 opposite to the side connected to WU72 is connected to the W-phase connection part 43 side. Further, the end of WU 81 opposite to the end connected to WU 82 is connected to a W-phase connection portion 43 side.

[0163] In addition, the end of WU13 opposite to the side connected to WU12 is connected to the U-phase connection part 43 side. In addition, the end of WU23 opposite to the side connected to WU22 is connected to the U-phase connection part 43 side. In addition, the end of WU33 opposite to the side connected to WU32 is connected to the U-phase connection part 43 side. In addition, the end of WU43 opposite to the side connected to WU42 is connected to the U-phase connection part 43 side. In addition, the end of WU53 opposite to the side connected to WU52 is connected to the U-phase connection part 43 side. In addition, the end of WU63 opposite to the side connected to WU62 is connected to the U-phase connection part 43 side. In addition, the end of WU73 opposite to the side connected to WU72 is connected to the U-phase connection part 43 side. Further, the end of WU 83 opposite to the end connected to WU 82 is connected to the U-phase connection portion 43 side.

[0164] 31, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV11 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV12, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV11 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV12 via the band member 34.

[0165] Further, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV12 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV13, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV12 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV13 via the band member 34.

[0166] Further, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV13 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV21, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV13 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV21 via the band member 34.

[0167] Further, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV21 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV22, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV21 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV22 via the band member 34.

[0168] Further, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV22 are disposed at the same circumferential positions as the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV23, respectively. That is, the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 of the coil UV22 overlap with the second straight portion A2, the second straight portion B2, and the second straight portion C2 of the coil UV23 via the band member 34.

[0169] The coils UV11, UV12, UV13, UV21, UV22, and UV23 described above are arranged in this order on the first turn of the wound belt member 34. That is, the coils UV11, UV12, UV13, UV21, UV22, and UV23 are arranged in this order on the side of the wound belt member 34 that is closest to the rotor 12.

[0170] Here, in the motor of this embodiment, the sixth straight portion C6 of the coil UV11 and the sixth straight portion C6 of the coil UV12 are connected. Also, the first straight portion A1 of the coil UV12 and the first straight portion A1 of the coil UV13 are connected. Also, the first straight portion A1 of the coil UV21 and the first straight portion A1 of the coil UV22 are connected. Also, the sixth straight portion C6 of the coil UV22 and the sixth straight portion C6 of the coil UV23 are connected.

[0171] Although not shown, the coils UV31, UV32, UV33, UV41, UV42, and UV43 arranged in the second turn of the belt member 34 are arranged in the same relationship as the coils UV11, UV12, UV13, UV21, UV22, and UV23 arranged in the first turn of the belt member 34. The coils UV51, UV52, UV53, UV61, UV62, and UV63 arranged in the third turn of the belt member 34 are arranged in the same relationship as the coils UV11, UV12, UV13, UV21, UV22, and UV23 arranged in the first turn of the belt member 34. The coils UV71, UV72, UV73, UV81, UV82, and UV83 arranged in the fourth turn of the belt member 34 are arranged in the same relationship as the coils UV11, UV12, UV13, UV21, UV22, and UV23 arranged in the first turn of the belt member 34.

[0172] The coils VW11 to VW83 are also arranged on the band member 34 in the same relationship as the coils UV11 to UV83. The coils WU11 to WU83 are also arranged on the band member 34 in the same relationship as the coils UV11 to UV83.

[0173] The motor of the seventh embodiment described above can have different characteristics compared to star-connected configurations such as the motor 10 of each of the previous embodiments. Whether to select star connection or delta connection can be appropriately determined in consideration of the characteristics required of the motor.

[0174] (Eighth to tenth embodiments) Next, motors according to the eighth to tenth embodiments will be described. In the motors according to the eighth to tenth embodiments, members and parts corresponding to the motor 10 of the first embodiment already described will be given the same reference numerals as those corresponding to the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0175] 32 shows a coil 16 constituting a part of a motor of the eighth embodiment. As shown in this figure, the coil 16 of the motor of the present embodiment is formed in a diamond shape when viewed from the thickness direction of the belt member 34.

[0176] Fig. 33 shows a coil 16 constituting a part of a motor of the ninth embodiment. As shown in this figure, the coil 16 of the motor of the present embodiment is formed in a parallelogram shape when viewed from the thickness direction of the belt member 34.

[0177] Fig. 34 shows the coil 16 that constitutes a part of the motor of the tenth embodiment. As shown in this figure, the coil 16 of the motor of this embodiment is formed in a trapezoidal shape when viewed in the thickness direction of the band member 34.

[0178] 32 to 34, parts corresponding to the above-described hexagonal coil 16 (see FIG. 7) are given the same reference numerals as the parts corresponding to the hexagonal coil 16. In this way, the shape of the coil 16 may be appropriately set in consideration of the output characteristics required of the motor, etc.

[0179] (Eleventh to Thirteenth Embodiments) Next, motors according to the eleventh to thirteenth embodiments will be described. In the motors according to the eleventh to thirteenth embodiments, members and parts corresponding to the motor 10 of the first embodiment already described will be given the same reference numerals as those corresponding to the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0180] FIG. 35 is an enlarged perspective view showing a coil body 32 constituting a part of the motor of the eleventh embodiment. In this figure, the belt member 34 is wound multiple times in the circumferential direction. Also, as shown in FIG. 35 and FIG. 36, a plurality of connection parts 43 connected to the coils of each phase extend from the annularly wound part of the belt member 34 toward one axial side. Then, a plurality of connection parts 43 of the U phase extend from approximately the same position in the circumferential direction toward one axial side and are arranged side by side in the radial direction. Furthermore, at least a part of the insulating layer at the end of the plurality of connection parts 43 of the U phase on one axial side is removed and the connection parts 43 are bundled together. Here, the part where the insulating layer is removed and bundled together is called a connection terminal part 58. The plurality of connection parts 43 of the V phase and the plurality of connection parts 43 of the W phase are also configured similarly to the plurality of connection parts 43 of the U phase.

[0181] In the present embodiment described above, the terminals for parallel connection in the multiple connection parts 43 for each phase are concentrated in a predetermined location, so that it is easy to bundle the multiple connection parts 43 for each phase. This makes it possible to eliminate the need for unnecessary routing of the multiple connection parts 43 for each phase.

[0182] 37, the wiring of the coil 16 may be preliminarily coupled between the connection terminal portion 58 and the coil 16. In this configuration, the number of connection portions 43 bundled in the connection terminal portion 58 can be reduced compared to the configuration shown in FIG.

[0183] Also, like the motor of the twelfth embodiment shown in FIG. 38, the ends of a plurality of connecting portions 43 on one axial side may be connected to each other via a substrate 60. In the motor of the twelfth embodiment shown in FIG.

[0184] FIG. 39 is an enlarged perspective view showing a coil body 32 constituting a part of the motor of the thirteenth embodiment. In this figure, the belt member 34 is wound multiple times in the circumferential direction. In addition, a plurality of connection parts 43 connected to the coils of each phase extend from the annularly wound part of the belt member 34 toward one axial side and are bent radially outward. Here, in this embodiment, as shown in FIG. 40, the plurality of connection parts 43 extend from approximately the same position in the circumferential direction toward one axial side and are arranged side by side in the radial direction. In addition, the length of each connection part 43 gradually becomes shorter as it moves radially outward. That is, when the lengths of a pair of connection parts 43 adjacent to each other in the radial direction are compared, the length of the connection part 43 located on the radially outer side is shorter than the length of the connection part 43 located on the radially inner side. As a result, the radial positions of the ends 43A of the plurality of connection parts 43 are aligned when the plurality of connection parts 43 are bent radially outward. In this manner, in this embodiment, the positions and directions of the ends 43A of the multiple connection parts 43 can be adjusted, so that the variations in the arrangement of the circuits to which the multiple connection parts 43 are connected can be increased. In addition, when the multiple connection parts 43 are bent, it is possible to prevent unnecessary bulging of the multiple connection parts 43, thereby saving the arrangement space of the multiple connection parts 43. The above configuration can also be applied to a configuration in which the multiple connection parts 43 are bent radially inward.

[0185] (14th and 15th embodiments) Next, motors according to the fourteenth and fifteenth embodiments will be described. In the motors according to the fourteenth and fifteenth embodiments, members and parts corresponding to the motor 10, etc., of the first embodiment already described will be given the same reference numerals as those corresponding to the motor 10, etc., of the first embodiment already described, and the description thereof may be omitted.

[0186] Fig. 41 shows a view corresponding to Fig. 9 etc., which shows an enlarged view of a part of the coil body 32 of the motor of the fourteenth embodiment. As shown in this figure, the belt member 34 has a tongue-shaped connection portion holding portion 34C that protrudes toward one axial side from a portion of the belt member 34 that is wound in an annular shape. In this embodiment, three connection portions 43 are formed on one connection portion holding portion 34C. Note that the insulating layer (part of the connection portion holding portion 34C) on one axial side of the three connection portions 43 is removed.

[0187] Fig. 42 is a view corresponding to Fig. 41 showing an enlarged view of a part of the coil body 32 of the motor of the fifteenth embodiment. As shown in this figure, in this embodiment, the connection portion holding portion 34C is divided into three in the circumferential direction corresponding to the three connection portions 43.

[0188] In the motor of the fourteenth embodiment and the motor of the fifteenth embodiment described above, the intervals between the three connection parts 43 can be easily maintained at a predetermined interval.

[0189] Sixteenth embodiment Next, a motor according to a sixteenth embodiment will be described. In the motor according to the sixteenth embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be given the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0190] As shown in FIG. 43, in the motor of the sixteenth embodiment, the circumferential dimension S1 of the vertical portion 36 constituting the vertical portion laminate 56 gradually increases toward the radially outward direction. As a result, the cross section of the vertical portion laminate 56 cut along the radial direction has a substantially fan-shaped shape. This configuration allows the cross-sectional area of ​​the vertical portion laminate 56 to be larger than that of the motor 10 of the first embodiment, etc. As a result, the electrical resistance of the vertical portion laminate 56 can be reduced compared to that of the motor 10 of the first embodiment, etc. That is, the space factor of the coil 16 can be increased compared to that of the motor 10 of the first embodiment, etc.

[0191] Seventeenth embodiment Next, a motor according to a seventeenth embodiment will be described. In the motor according to the seventeenth embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be given the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0192] As shown in Fig. 44, in the motor of the seventeenth embodiment, slits 62 are formed in the second straight portion A2, the second straight portion B2, and the second straight portion C2 constituting the vertical portion 36 of the coil 16. As a result, the second straight portion A2, the second straight portion B2, and the second straight portion C2 are divided in the circumferential direction via the slits 62. The slits 62 may be formed in the fifth straight portion A5, the fifth straight portion B5, and the fifth straight portion C5 constituting the vertical portion 36 of the coil 16. The slits 62 may be formed in the first straight portion A1, B1, C1 and the sixth straight portion A6, B6, and C6 constituting one coil end portion 38 of the coil 16, or the slits 62 may be formed in the third straight portion A3, B3, C3 and the fourth straight portion A4, B4, and C4 constituting the other coil end portion 38.

[0193] In the motor of the seventeenth embodiment described above, by forming the slits 62 in the vertical portion 36 of the coil 16 and the like, the generation of eddy currents can be suppressed more effectively than in a configuration without the slits 62.

[0194] (18th to 20th embodiments) Next, motors according to the 18th to 20th embodiments will be described. In the motors according to the 18th to 20th embodiments, members and parts corresponding to the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those corresponding to the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0195] 45, in the motor of the 18th embodiment, the circumferential positions of the multiple vertical portions 36 constituting the vertical portion laminate 56 are offset from one another. Specifically, in the motor of the 18th embodiment, when comparing the circumferential positions of a pair of vertical portions 36 adjacent to one another in the circumferential direction, the circumferential position of the vertical portion 36 located on the radially outer side is located on the other circumferential side with respect to the circumferential position of the vertical portion 36 located on the radially inner side.

[0196] As shown in FIG. 46, in the motor of the 19th embodiment, the circumferential positions of the multiple vertical portions 36 constituting the vertical portion laminate 56 are offset. Specifically, in the motor of the 19th embodiment, the circumferential positions of the pair of vertical portions 36 formed on the second turn of the band member 34 are offset to the other circumferential side from the circumferential positions of the pair of vertical portions 36 formed on the first turn of the band member 34. In addition, the circumferential positions of the pair of vertical portions 36 formed on the third turn of the band member 34 are offset to the other circumferential side from the circumferential positions of the pair of vertical portions 36 formed on the second turn of the band member 34. In addition, the circumferential positions of the pair of vertical portions 36 formed on the fourth turn of the band member 34 are offset to the other circumferential side from the circumferential positions of the pair of vertical portions 36 formed on the third turn of the band member 34.

[0197] 47, in the motor of the twentieth embodiment, the circumferential positions of the multiple vertical portions 36 constituting the vertical portion laminate 56 are offset. Specifically, in the motor of the twentieth embodiment, the multiple vertical portions 36 constituting the vertical portion laminate 56 are arranged in a zigzag pattern on one circumferential side and the other side as they move from the radially inner side to the radially outer side.

[0198] In the motors of the eighteenth to twentieth embodiments described above, the circumferential positions of the multiple vertical sections 36 that make up the vertical-section laminate 56 are offset, making it possible to adjust the pulsation of the torque of the motor.

[0199] (21st embodiment) Next, a motor according to a 21st embodiment will be described. In the motor according to the 21st embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0200] Fig. 48 is a diagram corresponding to Fig. 19, showing six U-phase coils 16 formed on the first turn of the band member 34 of the motor of the 21st embodiment. As shown in this diagram, in the motor of this embodiment, a part of one coil 16 and a part of the other coils 16 are connected via a voltage equalizing connection part 64. The configuration of the motor of the 21st embodiment is similar to that of the motor of the second embodiment described above, except that a part of one coil 16 and a part of the other coils 16 are connected via a voltage equalizing connection part 64.

[0201] The boundary between the third straight portion B3 and the fourth straight portion B4 of the coil U12 and the boundary between the third straight portion B3 and the fourth straight portion B4 of the coil U22 form an equal potential portion 66 having no or a small potential difference therebetween. The equal potential portion 66 of the coil U12 and the equal potential portion 66 of the coil U22 are connected via a voltage equalizing connection portion 64. The portion of the coil U13 connected to the neutral point 44 and the portion of the coil U23 connected to the neutral point 44 are connected via the voltage equalizing connection portion 64. Here, in this embodiment, the voltage equalizing connection portion 64 is formed on the band member 34.

[0202] Although not shown, the coils U31, U32, U33, U43, U42, and U41 arranged in the second turn of the belt member 34 are arranged and connected in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the belt member 34. The coils U51, U52, U53, U63, U62, and U61 arranged in the third turn of the belt member 34 are arranged and connected in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the belt member 34. In addition, the coils U71, U72, U73, U83, U82, and U81 arranged in the fourth turn of the belt member 34 are arranged and connected in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the belt member 34, respectively.

[0203] The coils V11-V83 constituting the V phase are also arranged on the band member 34 in the same relationship as the coils U11-U83 constituting the U phase. The coils W11-W83 constituting the W phase are also arranged on the band member 34 in the same relationship as the coils U11-U83 constituting the U phase.

[0204] In the motor of the twenty-first embodiment described above, the same potential portion 66 of one coil 16 and the same potential portion 66 of the other coil 16 are connected as described above via the voltage equalizing connection 64. This adjusts partial potential imbalances between the multiple series coils 16 connected in parallel due to variations in the magnets 18 of the rotor 12, variations in the coils 16, and the like, making it possible to realize stable operation of the motor.

[0205] In this embodiment, the voltage equalizing connection 64 is formed on the band member 34, but other configurations may be used. For example, a configuration may be used in which a dedicated wire used as the voltage equalizing connection 64 is provided as a member separate from the coil body 32. Also, the equal potential parts 66 may be connected to each other using vias or through holes. Also, a configuration may be used in which the insulating layer of the equal potential parts 66 is removed and the two equal potential parts 66 are brought into contact with each other.

[0206] In addition, the maximum value of the current flowing through the voltage equalizing connection 64 is smaller than the maximum value of the current flowing through the coil 16. Therefore, the cross-sectional area of ​​the conductor that constitutes the voltage equalizing connection 64 may be smaller than the cross-sectional area of ​​the conductor that constitutes the coil 16.

[0207] Moreover, the same potential parts 66 may be connected to each other via a voltage equalizing connection part 64 so as to span the first to fourth turns of the band member 34.

[0208] (Twenty-second embodiment) Next, a motor according to a 22nd embodiment will be described. In the motor according to the 22nd embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0209] 49, the motor 68 of the 22nd embodiment constitutes a motor control device 74 together with a control circuit 70 and a power source 72. The control circuit 70 is connected to the power source 72 via a first connection line 76. The control circuit 70 is activated by power from the power source 72, and controls the rotation of the rotor 12 by controlling each of the coils 16 that constitute a part of the motor 68.

[0210] As shown in FIG. 49 and FIG. 50, the motor 68 is connected to the control circuit 70 via the second connection line 78. The second connection line 78 is, for example, a lead wire made of bundled metal wires or a metal bar formed by punching, bending, or the like. A connecting member 80 is provided between the second connection line 78 and the connection terminal portion 58. By providing the connecting member 80, the connection state between the second connection line 78 and the connection terminal portion 58 is maintained. In this embodiment, at least in the portion of the second connection line 78 connected to the connection terminal portion 58, the area of ​​the cross section perpendicular to the current direction of the second connection line 78 is equal to or larger than the cross section of the cross section perpendicular to the current direction of the connection terminal portion 58. This makes it possible to suppress a decrease in the output of the motor 68 due to a voltage drop caused by the resistance of the second connection line 78.

[0211] The connecting member 80 may be a circular conductive member, a crimp terminal, or the like. It is desirable that the connecting member 80 also has a cross-sectional area equal to or larger than that of the connection terminal portion 58. The connecting member 80 may be integrated with the second connection line 78. Furthermore, instead of the connecting member 80, a configuration may be formed by soldering or welding.

[0212] (Twenty-third embodiment) Next, a motor according to a 23rd embodiment will be described. In the motor according to the 23rd embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0213] 51 shows a cross section of a motor 82 of the 23rd embodiment cut along the axial direction. In this figure, the coil body 32 is simplified. In the motor 82 of the 23rd embodiment, the axial dimension Z1 of the magnet 18 of the rotor 12 is set to be larger than the axial dimension Z2 of the vertical portion 36 of the coil 16, and is set to be smaller than the axial dimension Z3 from one coil end portion 38 to the other coil end portion 38 of the coil 16. As a result, the motor 82 of this embodiment can be advantageous in terms of high output and small size and weight reduction, compared to a configuration in which the axial dimension Z1 of the magnet 18 is set outside the above range.

[0214] Here, if the axial dimension Z1 of the magnet 18 is set large, the amount of magnetic flux of the magnet 18 increases. However, in the configuration of the motor 82 of this embodiment, the opposing area between the magnet 18 and the coil 16 becomes smaller the closer to the end of the coil end portion 38 opposite the vertical portion 36. The values ​​of the above dimensions Z1, Z2, and Z3 can be set appropriately taking into consideration this relationship and the balance with the cost and mass of the magnet 18.

[0215] The axial dimension of the stator core 26 may be the same as the axial dimension Z1 of the magnet 18, or may be different.

[0216] (Twenty-fourth embodiment) Next, a motor according to a 24th embodiment will be described. In the motor according to the 24th embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0217] 52 shows the coil body 32 of a motor according to a twenty-fourth embodiment. As shown in this figure, the coil body 32 is provided with a plurality of sensors 84 used to detect the rotation of the rotor 12. In this embodiment, three sensors 84 are provided. The sensor 84 includes a sensor main body 84A formed in a rectangular block shape and a sensor wiring portion 84B protruding from the sensor main body 84A.

[0218] 53 and 54, in this embodiment, a sensor 84 is attached to a radially inner surface of a portion constituting the fourth turn of the belt member 34. Further, a sensor opening 86 in which a sensor main body 84A is disposed is formed in the portions constituting the first to third turns of the belt member 34.

[0219] In the embodiment described above, the position of the sensor 84 relative to the coil 16 can be set with high precision, enabling good control of the motor. Furthermore, since there is no need to position the sensor 84 later, motor assembly can be simplified. Furthermore, since no extra space is required for sensor placement, the overall motor can be made smaller.

[0220] The sensor wiring portion 84B may be formed as a pattern on the band member 34. Although the present embodiment provides a plurality of sensors 84 for detecting the rotation of the rotor 12, other sensors may also be provided. For example, a temperature sensor for monitoring the temperature of the coil 16, an acceleration sensor for detecting vibrations, or the like may be provided.

[0221] (25th to 28th embodiments) Next, motors according to the 25th to 28th embodiments will be described. In the motors according to the 25th to 28th embodiments, members and parts corresponding to the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those corresponding to the motor 10 of the first embodiment already described, and description thereof may be omitted.

[0222] 55 and 56, in the motor 88 of the 25th embodiment and the motor 90 of the 26th embodiment, when the magnet 18 is viewed from the axial direction, the angle between the direction of the magnetization easy axis 92 at the magnetic pole center of the magnet 18 and the radial direction (d-axis 94) is set to be smaller than the angle between the direction of the magnetization easy axis 92 between the magnetic poles of the magnet 18 and the radial direction (q-axis 96), or the magnet 18 is inclined so as to be concentrated on the d-axis on the coil opposing surface side. This makes it possible to increase the magnetic flux density in the air gap with the stator 14. As a result, it is possible to reduce the size and power of the motors 88 and 90 and reduce the amount of magnets 18.

[0223] 57, in a motor 98 of the twenty-seventh embodiment, a portion of one circumferentially adjacent magnet 18 facing the coil body 32 and a portion of the other circumferentially adjacent magnet 18 facing the coil body 32 are spaced apart in the circumferential direction. Also, an intervening portion 24D formed using a magnetic material is interposed between a portion of one circumferentially adjacent magnet 18 facing the coil body 32 and a portion of the other circumferentially adjacent magnet 18 facing the coil body 32. As an example, the intervening portion 24D is formed integrally with the rotor core 24.

[0224] 58, in motor 100 of the twenty-eighth embodiment, a portion of one circumferentially adjacent magnet 18 facing the coil body 32 and a portion of the other circumferentially adjacent magnet 18 facing the coil body 32 are circumferentially spaced apart. Also, a portion of one circumferentially adjacent magnet 18 facing the opposite side to the coil body 32 and a portion of the other circumferentially adjacent magnet 18 facing the opposite side to the coil body 32 are in contact with each other or slightly spaced apart in the circumferential direction.

[0225] In the motor 98 of the twenty-seventh embodiment and the motor 100 of the twenty-eighth embodiment configured as described above, the magnetic resistance between the magnets 18 adjacent to each other in the circumferential direction can be reduced and the magnetic flux density can be increased.

[0226] Twenty-ninth embodiment Next, a motor according to a 29th embodiment will be described. In the motor according to the 29th embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0227] As shown in FIG. 59, the motor 102 of the twenty-ninth embodiment is a motor with a reducer having a reducer 104. Most of the reducer 104 is disposed inside the rotor core 24. The reducer 104 includes an internal gear 106 fixed to the rotating shaft 22, and an external gear 110 disposed radially outside the internal gear 106 and fixed to a housing 108 supporting the stator 14. The reducer 104 also includes a planetary gear 112 disposed between the internal gear 106 and the external gear 110 and meshing with the internal gear 106 and the external gear 110, a carrier 114 supporting the planetary gear 112, and an output shaft 116 fixed to the carrier 114. In the motor 102 having this configuration, the rotation of the rotor 12 can be reduced by the reducer 104 and transmitted to the output shaft 116, and the size of the motor in the axial direction can be reduced.

[0228] Thirtieth Embodiment Next, a motor according to a 30th embodiment will be described. In the motor according to the 30th embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0229] FIG. 60 shows an enlarged cross-sectional view that shows a schematic cross section of the insulator 28 that constitutes a part of the motor of the 30th embodiment. As shown in this figure, the insulator 28 is configured to include a soft magnetic portion 52 formed of a soft magnetic material in a base 50 formed of an insulating material. Note that, in the insulator 28 of this embodiment, the entire insulator 28 is configured to include the soft magnetic portion 52 in the base 50. As an example, in this embodiment, a resin material is used as the base 50. Also, in this embodiment, atomized powder of a metal having soft magnetism such as iron is used as the soft magnetic portion 52. With this configuration, the magnetic flux of the magnet 18 can be introduced into the stator core 26 through the soft magnetic portion 52 in the insulator 28, and the magnetic resistance between the magnet 18 and the stator core 26 can be reduced. As a result, the magnetic flux of the magnet 18 can be effectively utilized, and the torque of the motor can be increased and the size can be reduced.

[0230] Thirty-first embodiment Next, a motor according to the 31st embodiment will be described. In the motor according to the 31st embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0231] 61 and 62 are schematic diagrams showing a coil body 32 constituting a part of a motor according to a thirty-first embodiment. As shown in these figures, the coil body 32 is made up of a plurality of band members 34 wound in an annular shape. In this embodiment, the coil body 32 is made up of four band members 34. The four band members 34 have different inner and outer diameters. One band member 34 is disposed radially inside the other band members 34, thereby forming a coil body 32 having four layers in the radial direction. In this way, the coil body 32 can also be formed by a plurality of band members 34 wound in an annular shape.

[0232] (32nd to 34th embodiments) Next, motors according to the 32nd to 34th embodiments will be described. In the motors according to the 32nd to 34th embodiments, members and parts corresponding to those of the motor 10 of the first embodiment already described will be given the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0233] 63, the stator 14 of the motor 118 of the thirty-second embodiment has a coreless structure without a stator core 26. The rotor 12 of the motor 118 of the present embodiment includes a magnet 18 arranged radially inward relative to the coil body 32, and a magnet 18 arranged radially outward relative to the coil body 32.

[0234] 64, the stator 14 of the motor 120 of the thirty-third embodiment includes a coil body 32 arranged radially inward relative to the stator core 26, and a coil body 32 arranged radially outward relative to the stator core 26. The rotor 12 of the motor 120 of this embodiment includes a magnet 18 arranged radially inward relative to the radially inner coil body 32, and a magnet 18 arranged radially outward relative to the radially outer coil body 32.

[0235] 65, the rotor 12 of the motor 122 of the 34th embodiment includes a magnet 18 fixed to the inner circumferential surface of the second cylindrical portion 24B of the rotor core 24, and a magnet 18 fixed to the outer circumferential surface of the second cylindrical portion 24B of the rotor core 24. The stator 14 of the motor 122 of the 34th embodiment includes a stator core 26 and a coil body 32 arranged opposite the magnet 18 fixed to the inner circumferential surface of the second cylindrical portion 24B, and a stator core 26 and a coil body 32 arranged opposite the magnet 18 fixed to the outer circumferential surface of the second cylindrical portion 24B.

[0236] As for motors 118, 120, and 122 described above, the number and arrangement of coil bodies 32 constituting stator 14, the arrangement of magnets 18 of rotor 12, the number of stator cores 26, etc. may be set appropriately taking into consideration the output characteristics and physical size required of the motor.

[0237] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above, and can of course be modified in various ways without departing from the spirit of the present disclosure. In addition, all or part of the configurations of the embodiments described above can be combined with each other.

[0238] For example, the belt member 34 divided into a plurality of pieces can be wound a plurality of times while being joined together to form a cylindrical coil body. Also, a configuration can be adopted in which a plurality of coils 16 are star-connected on one circumference of the belt member 34, and a plurality of coils 16 are delta-connected on another circumference of the belt member 34. Also, the number of poles, the number of coils, the number of phases, and the number of coils in series and in parallel of the motor 10, etc. can be appropriately selected according to the application of the motor 10, etc. Also, the configuration of the motor 10, etc. can be applied to a generator. Also, the configuration of the motor 10, etc. can be applied to an outer rotor type brushless motor in which the rotor 12 is disposed radially outside the stator 14. Also, the configuration of the present disclosure can be applied to a rotor configured to include the coil body 32. [Explanation of symbols]

[0239] 10 motor (rotating electric machine), 12 rotor (rotor), 14 stator (armature, stator), 16 coil, 18 magnet, 32 coil body, 34 band member, 36 vertical portion, 38 coil end portion, 43 connection portion, 46U conductor group, 46V conductor group, 46W conductor group, 56 vertical portion laminate, 62 slit, 64 voltage equalizing connection portion, 66 same potential portion, 68 motor (rotating electric machine), 82 motor (rotating electric machine), 84 sensor, 88 motor (rotating electric machine), 90 motor (rotating electric machine), 98 motor (rotating electric machine), 100 motor (rotating electric machine), 102 motor (rotating electric machine), 118 motor (rotating electric machine), 120 motor (rotating electric machine), 122 motor (rotating electric machine), R1 R1: radial dimension of the vertical laminate, R2: radial dimension of the vertical section, S1: circumferential dimension of the vertical laminate, S2: circumferential dimension of the vertical section, S3: circumferential dimension of the conductor group, Z1: axial dimension of the magnet, Z2: axial dimension of the vertical section, Z3: axial dimension from one coil end to the other coil end

Claims

1. A belt member (34) formed in a belt shape using an insulating material, wound in a ring shape along a circumferential direction, and having multiple layers in a radial direction; a plurality of coils (16) formed on the band member using a conductive material, each having a vertical portion (36), each arranged at a predetermined position in the circumferential direction and the radial direction of the band member, and connected in a predetermined connection pattern; a vertical portion laminate (56) formed by laminating the vertical portions in the radial direction in a cross section obtained by cutting the band member and the plurality of coils along the radial direction, in which the vertical portions having different potentials are adjacent to each other in the radial direction when current is applied to the plurality of coils; Equipped with A plurality of the coils of a given phase are arranged side by side in the circumferential direction, the vertical portion stack is formed by laminating the vertical portion of a predetermined phase formed on the band member of one layer and the vertical portion of a predetermined phase formed on the band member of another layer in a radial direction, In a configuration in which a plurality of coils of a specified phase are connected in series, the potential difference from one end to the other end is V, and the number of coils connected in series is s. The potential difference between adjacent vertical portions in the radial direction is equal to or greater than 1.5×V / s. Alternatively, in a configuration in which a plurality of coils of a specified phase are not connected in series, the potential difference between adjacent vertical portions in the radial direction is equal to or greater than V / 2.

2. A conductor group (46U, 46V, 46W) of a phase defined by the plurality of vertical portion laminates is formed, 2. A coil body as described in claim 1, wherein the circumferential dimension (S3) of the conductor group is set to be larger than the radial dimension (R1) of the vertical laminate that constitutes the conductor group.

3. 3. The coil body according to claim 1, wherein a radial dimension of the vertical laminate is set to be larger than a circumferential dimension (S1) of the vertical laminate.

4. A coil body according to any one of claims 1 to 3, wherein the circumferential dimension (S2) of the vertical portion is set to be greater than the radial dimension (R2) of the vertical portion.

5. the coils of a given phase are arranged side by side in the circumferential direction, and the physical winding direction of the coils of the given phase is in one direction; A coil body according to any one of claims 1 to 4, wherein the coils of a predetermined phase are connected so that, when current is applied to the coils of the predetermined phase, they function in the same manner as if the coils of the predetermined phase having a winding direction in one direction and the coils of the predetermined phase having a winding direction in the opposite direction to the one direction are arranged alternately.

6. a plurality of connection portions (43) connected to the coil of a specified phase in a state where the belt member is wound a plurality of times in a circumferential direction extend from a portion of the belt member wound in an annular shape toward one axial side; The coil body according to any one of claims 1 to 5, wherein the plurality of connection portions of a given phase are arranged side by side in the radial direction and are bundled together.

7. A belt member (34) formed in a belt shape using an insulating material, wound in a ring shape along a circumferential direction, and having multiple layers in a radial direction; a plurality of coils (16) formed on the band member using a conductive material, each having a vertical portion (36), each arranged at a predetermined position in the circumferential direction and the radial direction of the band member, and connected in a predetermined connection pattern; a vertical portion laminate (56) formed by laminating the vertical portions in the radial direction in a cross section obtained by cutting the band member and the plurality of coils along the radial direction, in which the vertical portions having different potentials are adjacent to each other in the radial direction when current is applied to the plurality of coils; Equipped with a plurality of connection portions connected to the coil of a predetermined phase in a state in which the belt member is wound a plurality of times in a circumferential direction extend from a portion of the belt member wound in an annular shape toward one axial side; The plurality of connection portions of a given phase are arranged side by side in the radial direction and bent to one side in the radial direction, The length of each of the connection portions gradually becomes shorter toward one radial side.

8. The coil body according to any one of claims 1 to 7, wherein the circumferential dimensions of the vertical portions constituting the vertical portion laminates gradually increase toward the radially outward side.

9. The coil body according to any one of claims 1 to 8, wherein at least a portion of the coil is divided via a slit (62).

10. A part of one of the coils and a part of the other of the coils are at the same potential (66), The coil body according to any one of claims 1 to 9, wherein the same potential portion of one of the coils and the same potential portion of the other of the coils are connected via a voltage equalizing connection portion (64).

11. The coil body according to any one of claims 1 to 10, wherein a sensor (84) is attached to the band member.

12. An armature (14) comprising the coil body according to any one of claims 1 to 11.

13. One of a stator (14) and a rotor (12) comprising the armature according to claim 12; the other of the stator and the rotor having a magnet (18) arranged radially opposite to the coil body; A rotating electric machine (10, 68, 82, 88, 90, 98, 100, 102, 118, 120, 122) comprising the above-mentioned.

14. In the coil, a portion on one axial side of the vertical portion is defined as one coil end portion (38), and a portion on the other axial side of the vertical portion is defined as the other coil end portion, A rotating electric machine as described in claim 13, wherein an axial dimension (Z1) of the magnet is set to be larger than an axial dimension (Z2) of the vertical portion and smaller than an axial dimension (Z3) from one coil end portion to the other coil end portion.

Images