Armature and rotating electric machine

Abstract

To enable a coil body to be supported by an armature core and ensure the positional accuracy of the coil body with respect to the armature core.SOLUTION: A stator has a stator core, a coil body 32, and a coil body support member 60. The coil body 32 has a band member 34 wound annularly in the circumferential direction, a coil 16 formed on the band member 34, and a coil body side recess 34D provided on the band member 34. The coil body support member 60 is provided between the stator core and the coil body 32 and is attached to the stator core. The coil body support member 60 has a support member side protrusion 62D. The coil body 32 is positioned with respect to the stator core by engaging the support member side protrusion 62D and the coil body side recess 34D.SELECTED DRAWING: Figure 17

Description

[Technical Field]

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

[0002] Patent Document 1 below discloses a cylindrical coil in which a coil pattern is formed on a cylindrical substrate by forming a coil pattern groove on the outer surface of the cylindrical substrate and filling the coil pattern groove with a conductor. This cylindrical coil can improve the roundness and runout accuracy of the coil. Furthermore, in a rotating electric machine configured with this cylindrical coil, it is possible to reduce the magnetic gap, thereby improving the output and efficiency of the rotating electric machine. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5017627 Summary of the Invention [Problem to be solved by the invention]

[0004] In the armature and rotating electric machine configured to include a coil body (cylindrical coil) and an armature core as described in Patent Document 1, it is important to be able to support the coil body on the armature core and to ensure the positional accuracy of the coil body relative to the armature core.

[0005] In consideration of the above, the present disclosure aims to provide an armature and a rotating electric machine that can support a coil body on an armature core and ensure the positional accuracy of the coil body relative to the armature core. [Means for solving the problem]

[0006] The armature (14) that solves the above problem includes an armature core (26) formed in a cylindrical shape using a soft magnetic material, a band member (34) formed in a band shape using an insulating material and wound in an annular shape along the circumferential direction, a coil (16) formed on the band member using a conductive material, first engaging portions (34D, 34F) provided on the band member, a coil body (32) arranged along the armature core, and an engaging member (60) provided between the armature core and the coil body and attached to the armature core, the engaging member having second engaging portions (62D, 62F) that engage with the first engaging portions to position the coil body relative to the armature core. The armature core and the coil body are attached to the engaging member from one axial side of the coil body. Furthermore, the rotating electric machine (10, 66, 68, 72, 74, 76, 78, 88, 90, 92, 104, 106) is configured to include this armature.

[0007] With this configuration, the coil body can be supported by the armature core, and the positional accuracy of the coil body relative to the armature core can be ensured. [Brief explanation 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. [Figure 2] 1 is a cross-sectional view showing a cross section of a motor according to a first embodiment taken along a radial direction. [Figure 3] FIG. 2 is a perspective view schematically showing a coil body. [Figure 4] FIG. 2 is a perspective view schematically showing the band member in a wound state. [Figure 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 schematically illustrating a coil. [Figure 8] FIG. 10 is a schematic diagram illustrating a state in which some coils constituting a U phase are offset from other coils in the axial direction. [Figure 9]FIG. 10 is a diagram showing an expanded coil body. [Figure 10] FIG. 3 is a cross-sectional view showing a part of the coil body. [Figure 11] FIG. 3 is a cross-sectional view showing a part of the coil body. [Figure 12] FIG. 3 is a cross-sectional view showing a part of the coil body. [Figure 13] FIG. 3 is a cross-sectional view showing a cross section of the coil body cut along the radial direction. [Figure 14] FIG. 2 is a cross-sectional view showing a vertical section laminate. [Figure 15] FIG. 2 is a cross-sectional view showing a vertical section laminate. [Figure 16] FIG. 2 is a cross-sectional view showing a vertical section laminate. [Figure 17] FIG. 2 is an exploded perspective view showing a coil body and a coil body support member. [Figure 18] FIG. 3 is an enlarged perspective view showing a part of the coil body support member. [Figure 19] 10 is a view of an engagement portion between the coil body and the support member-side convex portion as viewed from the radially inner side. FIG. [Figure 20] 20 is a cross-sectional view of the motor cut along the radial and axial directions, showing a cross section cut along line BB shown in FIG. 19. [Figure 21] FIG. 10 is an exploded perspective view showing a coil body and a coil body support member of a motor according to a second embodiment. [Figure 22] 21 is a cross-sectional view of the motor of the second embodiment taken along the radial and axial directions, corresponding to FIG. 20. FIG. [Figure 23] FIG. 11 is an exploded perspective view showing a coil body and a coil body support member of a motor according to a third embodiment. [Figure 24] 10 is a view of an engagement portion between a coil body and a support member-side recess of a motor according to a third embodiment, as viewed from the radially inner side. FIG. [Figure 25] 25 is a cross-sectional view of the motor of the third embodiment taken along the radial and axial directions, showing a cross section taken along line BB shown in FIG. 24. FIG. [Figure 26] FIG. 10 is a cross-sectional view schematically showing an insulator of a motor according to a fourth embodiment. [Figure 27] FIG. 11 is an enlarged perspective view showing a stator core and a coil body support member of a motor according to a fifth embodiment. [Figure 28] FIG. 13 is an exploded perspective view showing a coil body support member of a motor according to a sixth embodiment. [Figure 29] 21 is a cross-sectional view of the motor of the sixth embodiment taken along the radial and axial directions, corresponding to FIG. 20. FIG. [Figure 30] FIG. 13 is an exploded perspective view showing a coil body support member of a motor according to a seventh embodiment. [Figure 31] 21 is a cross-sectional view of the motor of the seventh embodiment taken along the radial and axial directions, corresponding to FIG. 20. FIG. [Figure 32] 13A to 13C are diagrams schematically showing a manufacturing process for the stator core of the motor according to the eighth embodiment. [Figure 33] 13A to 13C are diagrams schematically showing a manufacturing process for the stator core of the motor according to the eighth embodiment. [Figure 34] FIG. 13 is an enlarged view showing a coil body support member of a motor according to an eighth embodiment. [Figure 35] 13 is an enlarged view showing an engagement portion between a coil body support member and a stator core of a motor according to an eighth embodiment. FIG. [Figure 36] FIG. 13 is an enlarged view of a coil body support member of a motor according to a ninth embodiment. [Figure 37] 13 is an enlarged view showing an engagement portion between a coil body support member and a stator core of a motor according to a ninth embodiment. FIG. [Figure 38] FIG. 23 is a perspective view showing a coil body, a stator core, and a coil body support member of a motor according to a tenth embodiment. [Figure 39] 20 along the radial and axial directions of the motor according to the tenth embodiment. FIG. [Figure 40] FIG. 23 is a perspective view showing a coil body, a stator core, and a coil body support member of a motor according to an eleventh embodiment. [Figure 41] 20. FIG. 20 is a cross-sectional view of the motor of the eleventh embodiment taken along the radial and axial directions. [Figure 42]FIG. 23 is a view of the stator of the motor according to the twelfth embodiment, viewed from the radially inner side. [Figure 43] FIG. 23 is a cross-sectional view of a motor according to a thirteenth embodiment taken along the radial and axial directions. [Figure 44] FIG. 23 is a cross-sectional view of a motor according to a fourteenth embodiment taken along the radial and axial directions. [Figure 45] FIG. 23 is a cross-sectional view of a motor according to a fifteenth embodiment taken along the radial and axial directions. [Figure 46] FIG. 2 is a diagram schematically illustrating a coil body before being wound. [Figure 47] 10A and 10B are diagrams for explaining the pitch of the coil body-side recesses in each turn. [Figure 48] FIG. 2 is a perspective view schematically showing a coil body. [Figure 49] FIG. 10 is a diagram schematically illustrating an initial state of a process of winding a coil body. [Figure 50] FIG. 10 is a diagram schematically illustrating a later stage of the process of winding the coil body. [Figure 51] 10A and 10B are diagrams schematically showing a process of removing the coil body from the jig. [Figure 52] FIG. 10 is an enlarged perspective view of a pin of another embodiment. [Figure 53] FIG. 10 is a perspective view showing another type of jig. [Figure 54] FIG. 23 is a diagram showing a coil body of a motor according to a sixteenth embodiment. [Figure 55] 10A to 10C are diagrams schematically illustrating a process of overlapping each belt member. [Figure 56] 20 along the radial and axial directions of the motor according to the seventeenth embodiment. FIG. [Figure 57] 20 along the radial and axial directions of the motor according to the eighteenth embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] (First embodiment) A motor 10 according to a first embodiment of the present disclosure will be described using Figures 1 to 20. Note that the arrow Z direction, arrow R direction, and arrow C direction shown as appropriate in the figures respectively indicate one side in the rotational axis direction, the outer side in the rotational radial direction, and one side in the rotational circumferential direction of a rotor 12, which will be described later. Furthermore, hereinafter, when simply referring to an axial direction, a radial direction, or a circumferential direction, this refers to the rotational axis direction, rotational radial direction, or rotational circumferential direction of the rotor 12, unless otherwise specified. Furthermore, 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 Figures 1 and 2 are drawings of the motor 10 etc. shown as an example, and there are some parts that do not match the numbers of coils 16, the numbers of magnets 18, and the shapes of the details that will be described later.

[0011] The rotor 12 is composed of a rotating shaft 22 rotatably supported via a pair of bearings 20, a rotor core 24 formed in a bolt-like 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 or the like, a second cylindrical portion 24B disposed radially outward of the first cylindrical portion 24A and also formed cylindrical, and a disc-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 cylindrically 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. As an example, the magnets 18 of this embodiment are made of NdFe 11 TiN, Nd2Fe 14 B, SmFe 17 The rotor core 24 is formed using a magnetic compound such as N3 or FeNi. 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 set appropriately taking into consideration the output required of 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 adhesive bonding, fitting, or the like, and coil body 32 attached to stator core 26 via insulator 28. Stator 14 also includes coil body support member 60 as an engaging member, which will be described in detail later. As shown in Figures 1 to 3, stator 14 of this embodiment has a teethless structure in which a portion of stator core 26 is not disposed inside coil 16, which constitutes a portion 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, 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 is configured to include 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.

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

[0019] As shown in Fig. 3, the multiple coils 16 are formed on a band member 34. Then, as shown in Fig. 3 and Fig. 4, the band 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 star-connected, 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 star-connected, 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 specific coil 16 may be indicated only by its coil number.

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

[0026] In addition, the end of U11 opposite to the side connected to U12, the end of U21 opposite to the side connected to U22, the end of U31 opposite to the side connected to U32, the end of U41 opposite to the side connected to U42, the end of U51 opposite to the side connected to U52, the end of U61 opposite to the side connected to U62, the end of U71 opposite to the side connected to U72, and the end of U81 opposite to the side connected to U82 are all 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 to the side connected to V12, the end of V21 opposite to the side connected to V22, the end of V31 opposite to the side connected to V32, the end of V41 opposite to the side connected to V42, the end of V51 opposite to the side connected to V52, the end of V61 opposite to the side connected to V62, the end of V71 opposite to the side connected to V72, and the end of V81 opposite to the side connected to V82 are all connected to one another.

[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 to the side connected to W12, the end of W21 opposite to the side connected to W22, the end of W31 opposite to the side connected to W32, the end of W41 opposite to the side connected to W42, the end of W51 opposite to the side connected to W52, the end of W61 opposite to the side connected to W62, the end of W71 opposite to the side connected to W72, and the end of W81 opposite to the side connected to W82 are all wired together.

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

[0032] The end of U23 opposite to the end connected to U22, the end of V23 opposite to the end connected to V22, and the end of W23 opposite to the end connected to W22 are all connected to one another.

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

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

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

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

[0037] The end of U73 opposite to the end connected to U72, the end of V73 opposite to the end connected to V72, and the end of W73 opposite to the end connected to W72 are all connected to one another.

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

[0039] 7 schematically shows 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 of the coil U11 constituting the first turn includes a first straight portion A1 that slopes toward the other circumferential side as it extends toward the other axial side, a second straight portion A2 that extends from the first straight portion A1 toward the other axial side, and a third straight portion A3 that slopes toward one circumferential side as it extends from the second straight portion A2 toward the other axial side. The portion of the coil U11 constituting the first turn also includes a fourth straight portion A4 that slopes toward one circumferential side as it extends from the third straight portion A3 toward the one axial side, a fifth straight portion A5 that extends from the fourth straight portion A4 toward the one axial side, and a sixth straight portion A6 that slopes toward the other circumferential side as it extends from the fifth straight portion A5 toward the one axial side. The first straight portion A1, the second straight portion A2, and the third straight portion A3 are formed on one surface 34A of the band member 34 (see FIG. 10). 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 that is formed on one surface 34A of the band member 34 is indicated by a solid line. Furthermore, the portion of the coil U11 that is formed on the other surface 34B of the band member 34 is indicated by a dashed line.

[0041] The portion of the coil U11 constituting the second turn includes a first straight portion B1 that slopes toward the other circumferential side as it extends 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 slopes toward one circumferential side as it extends from the second straight portion B2 toward the other axial side. The portion of the coil U11 constituting the second turn also includes a fourth straight portion B4 that slopes toward one circumferential side as it extends 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 slopes toward the other circumferential side as it extends from the fifth straight portion B5 toward the one axial side. 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 of the coil U11 constituting the third turn includes a first straight portion C1 that slopes toward the other circumferential side as it extends from the sixth straight portion B6 of the second turn toward the other axial side, a second straight portion C2 that extends from the first straight portion C1 toward the other axial side, and a third straight portion C3 that slopes toward one circumferential side as it extends from the second straight portion C2 toward the other axial side. The portion of the coil U11 constituting the third turn also includes a fourth straight portion C4 that slopes toward one circumferential side as it extends from the third straight portion C3 toward the one axial side, a fifth straight portion C5 that extends from the fourth straight portion C4 toward the one axial side, and a sixth straight portion C6 that slopes toward the other circumferential side as it extends from the fifth straight portion C5 toward the one axial side. The sixth straight portion B6 and the first straight portion C1 are electrically connected via a through hole (not shown) that penetrates 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 band member .

[0043] Furthermore, the portion of the coil U11 that forms the second turn (first straight portion B1 to sixth straight portion B6) is offset to one side in the circumferential direction from the portion of the coil U11 that forms the first turn (first straight portion A1 to sixth straight portion A6). Furthermore, the portion of the coil U11 that forms the third turn (first straight portion C1 to sixth straight portion C6) is offset to one side in the circumferential direction from the portion of the coil U11 that forms the second turn (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 coil U11. That is, all of the coils (U11 to U83) constituting the U phase have the same configuration. The second straight sections A2, B2, C2 and fifth straight sections A5, B5, C5 described above may be referred to as vertical sections 36. The first straight sections A1, B1, C1 and sixth straight sections A6, B6, C6 may be referred to as one coil end section 38, and the third straight sections A3, B3, C3 and fourth straight sections A4, B4, C4 may be referred to as the other coil end section 38.

[0045] FIG. 8 is a schematic diagram showing some coils U11 and the like that make up the U phase and other coils U12 and the like that are 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 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 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 with the band member 34 interposed therebetween.

[0047] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U12 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U13, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U12 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U13 with the band member 34 interposed therebetween.

[0048] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U13 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U23, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U13 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U23 with the band member 34 interposed therebetween.

[0049] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U23 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U22, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U23 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U22 with the band member 34 interposed therebetween.

[0050] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U22 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U21, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U22 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U21 with the band member 34 interposed therebetween.

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

[0052] Furthermore, the sixth straight portion C6 of the coil U11 is connected to the sixth straight portion C6 of the coil U12. Furthermore, the first straight portion A1 of the coil U12 is connected to the first straight portion A1 of the coil U13. Furthermore, the sixth straight portion C6 of the coil U23 is connected to the sixth straight portion C6 of the coil U22. Furthermore, 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 current is applied to the coils U11, U12, U13, U23, U22, and U21, 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. 8, the symbols for coils U12, U23, and U21, which are right-handed coils, are indicated by lines (bars). In this embodiment, the left-handed coils and right-handed coils are arranged alternately in the circumferential direction.

[0053] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U31 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U32, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U31 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U32 with the band member 34 interposed therebetween.

[0054] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U32 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U33, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U32 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U33 with the band member 34 interposed therebetween.

[0055] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U33 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U43, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U33 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U43 with the band member 34 interposed therebetween.

[0056] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U43 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U42, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U43 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U42 with the band member 34 interposed therebetween.

[0057] Furthermore, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U42 are arranged at the same circumferential positions as the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U41, respectively. That is, the fifth straight portion A5, fifth straight portion B5, and fifth straight portion C5 of the coil U42 overlap with the second straight portion A2, second straight portion B2, and second straight portion C2 of the coil U41 with the band member 34 interposed therebetween.

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

[0059] Furthermore, the coils U31, U32, U33, U43, U42, and U41 arranged on the second turn of the band member 34 are connected in the same manner as the coils U11, U12, U13, U23, U22, and U21 arranged on the first turn of the band member 34.

[0060] The coils U51 to U83 are also arranged on the band member 34 in the same relationship as the coils U11 to U43 described above. As a result, the coils U51, U52, U53, U63, U62, and U61 are arranged in this order on the third turn of the wound band member 34. The coils U71, U72, U73, U83, U72, and U81 are arranged in this order on the fourth turn of the wound band member 34.

[0061] Furthermore, the coils U51, U52, U53, U63, U62, and U61 arranged in the third turn of the band member 34 are connected in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the band member 34. Furthermore, the coils U71, U72, U73, U83, U82, and U81 arranged in the fourth turn of the band member 34 are connected in the same relationship as the coils U11, U12, U13, U23, U22, and U21 arranged in the first turn of the band member 34.

[0062] 8 and 9, the coils V11 to V83 constituting the V phase are arranged on the band member 34 in the same relationship as the coils U11 to U83 constituting the U phase. Furthermore, the coils W11 to W83 constituting the W phase are arranged on the band member 34 in the same relationship as the coils U11 to U83 constituting the U phase. However, the coils V11 to V83 constituting the V phase are connected so that their winding direction is opposite to that of the coils constituting the U and W phases.

[0063] Additionally, the coils V11 to V83 that make up the V phase are offset to one side in the circumferential direction relative to the coils U11 to U83 that make up the U phase. Furthermore, the coils W11 to W83 that make up the W phase are offset to one side in the circumferential direction relative to the coils V11 to V83 that make up the V phase.

[0064] FIG. 10 shows a portion of a cross section of the band member 34 and the multiple coils 16 taken along line AA in FIG. 9. The cross section shown in FIG. 10 is a cross section of the other circumferential end of the band member 34. 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 surface 34A of the band member 34. Note that the reference numerals indicating the coils are suffixed with 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 suffixed with a reference numeral U11T1, the portion indicating the second turn of the coil U11 is suffixed with a reference numeral U11T2, and the portion indicating the third turn of the coil U11 is suffixed with a reference numeral U11T3.

[0065] 11 shows a portion of a cross section of the band member 34 and the plurality of coils 16 taken along line AA in FIG. 9. The cross section shown in FIG. 11 corresponds to the range indicated by arrow E in FIG. 9. The cross section shown in FIG. 11 is a cross section of a portion adjacent in the circumferential direction to the cross section shown in FIG. 10. In the cross section shown in FIG. 11, U12T3, U12T2, U12T1, V12T1, V12T2, V12T3, W12T3, W12T2, and W12T1 are formed in this order on one surface 34A of the band 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 other surface 34B of the band member 34.

[0066] Although not shown, even on one circumferential side of the cross section shown in Figure 11, the U-phase coils (U12, U13, U23...U83, U82, U81), the V-phase coils (V12, V13, V23...V83, V82, V81), and the W-phase coils (W12, W13, W23...W83, W82, 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.

[0067] 12 shows a portion of a cross section of the band member 34 and the plurality of coils 16 taken along 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.

[0068] As shown in FIG. 9, each coil 16 is connected via a connection pattern 40 provided on one axial side of the belt member 34. The portion of the connection pattern 40 formed on one surface 34A of the belt member 34 is indicated by a solid line. The portion of the connection pattern 40 formed on the other surface 34B of the belt member 34 is indicated by a dashed line. The connection pattern 40 indicated by reference numeral 44 represents a neutral point. The connection pattern 40 indicated by reference numeral 43 represents a connection portion connected to a control unit (not shown). The connections between the coils 16 and the connections (40, 43, 44) connected to the control unit may be made using separate bus bars or printed circuit boards.

[0069] 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 portion 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 of each coil 16 (see Fig. 7).

[0070] In the cross section shown in FIG. 13 , the vertical portions 36 of the multiple coils 16 are stacked radially and arranged at equal intervals in the circumferential direction. When the vertical portions 36 of the multiple coils 16 are stacked radially, a first insulating layer 54A or a second insulating layer 54B is interposed between a pair of radially adjacent vertical portions 36. The first insulating layer 54A is the band member 34. The second insulating layer 54B is an insulating film, such as an insulating paint, formed to cover the coils 16 formed on the band member 34. Here, the vertical portions 36 of the multiple coils 16 stacked radially are referred to as a vertical portion laminate 56. When viewed in a cross section cut along the radial direction, this vertical portion laminate 56 has a rectangular cross section in which the radial dimension R1 is larger than the circumferential dimension S1. In this embodiment, the circumferential dimension S2 of the vertical portions 36 constituting the vertical portion laminate 56 is larger than the radial dimension R2.

[0071] Here, Figures 14, 15 and 16 show a vertical section laminate 56 whose radially inner end is U12T3, a vertical section laminate 56 whose radially inner end is U12T2, and a vertical section laminate 56 whose radially inner end is U12T1, respectively.

[0072] As shown in Figure 14, in the vertical section stack 56 whose radially inner end is U12T3, the vertical sections 36 are arranged in a row in the order U12T3, U11T1, U32T3, U31T1, U52T3, U51T1, U72T3, and U71T1 as they move radially outward.

[0073] As shown in Figure 15, in the vertical section stack 56 whose radially inner end is U12T2, the vertical sections 36 are arranged in a row in the order U12T2, U11T2, U32T2, U31T2, U52T2, U51T2, U72T2, and U71T2 as they move radially outward.

[0074] As shown in Figure 16, in the vertical section stack 56 whose radially inner end is U12T1, the vertical sections 36 are arranged in a row in the order U12T1, U11T3, U32T1, U31T3, U52T1, U51T3, U72T1, and U71T3 as they move radially outward.

[0075] 13 (see also FIGS. 14 to 16), a vertical section laminate 56 having a radially inner end portion designated U12T3, a vertical section laminate 56 having a radially inner end portion designated U12T2, and a vertical section laminate 56 having a radially inner end portion designated U12T1 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 that constitutes the U-phase conductor group 46U.

[0076] The vertical portions 36 of the other coils 16 also form the vertical portion laminate 56 in the same manner as above. The V-phase conductor group 46V and the W-phase conductor group 46W are also formed in the same manner 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.

[0077] (Actions and Effects of This Embodiment) Next, the operation and effects of this embodiment will be described.

[0078] 1, 2, 5, and 9, in the motor 10 of this embodiment, a rotating magnetic field is generated on the inner periphery 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.

[0079] 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, thereby arranging the plurality of coils 16 at predetermined positions in the circumferential and radial directions. This configuration can prevent the coil body 32 from becoming too large in the radial direction. As a result, the motor 10 can be prevented from becoming too large.

[0080] 13, in this embodiment, the circumferential dimension S3 of the radially inner end (the end closest to the magnet 18 of the rotor 12) of each phase conductor group 46U, 46V, 46W is set to be larger than the radial dimension R1 of the vertical section laminate 56 that constitutes each phase conductor group 46U, 46V, 46W. This setting allows the radial thickness of the coil body 32 to be reduced, thereby reducing the gap between the magnet 18 of the rotor 12 and the stator core 26. This reduces magnetic resistance. This further improves the torque of the motor 10.

[0081] In addition, in this embodiment, the radial dimension R1 of the vertical section lamination body 56 is larger than the circumferential dimension S1. This makes it possible to reduce the area where the vertical section lamination body 56 faces the magnets 18 of the rotor 12 while ensuring the cross-sectional area of ​​the vertical section lamination body 56. This makes it possible to suppress eddy currents that are generated in the vertical section 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 sections 36 constituting the vertical section laminated body 56 is larger than the radial dimension R2. This suppresses eddy currents that are generated in the vertical section laminated body 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] In this embodiment, the U-phase coils 16 are arranged side by side in the circumferential direction, and the U-phase coils 16 are physically wound in one direction. Additionally, the U-phase coils 16 are connected so that, when current is applied to the U-phase coils 16, they function as if the U-phase coils 16 were alternately arranged with the left-handed U-phase coils 16 and the right-handed U-phase coils 16. The V-phase coils 16 and the W-phase coils 16 are also arranged in the same manner as the U-phase coils 16. As a result, in this embodiment, as shown in FIG. 14 and other figures, the potential difference between the vertical portions 36 stacked radially in the vertical portion laminate 56 can be reduced. Specifically, even in a configuration in which vertical portions 36 with different numbers of turns (T1 to T3) are arranged adjacent to each other in the radial direction, the potential difference between the vertical portions 36 stacked radially, such as U12T3 and U11T1, can be reduced. This makes it possible to improve the reliability of insulation between the vertical portions 36 stacked in the radial direction, and to reduce the thickness of the first insulating layer 54A and the second insulating layer 54B.

[0084] (Configuration for supporting the coil body 32 on the stator core 26) Next, a configuration for supporting the coil body 32 applied to the motor 10 of this embodiment on the stator core 26 and ensuring the positional accuracy of the coil body 32 relative to the stator core 26 will be described.

[0085] 17 to 20, a coil body support member 60 is provided between the stator core 26 and the coil body 32. The coil body 32 is supported by the stator core 26 via the coil body support member 60.

[0086] As shown in Figure 17, the coil body support member 60 is configured to include a first support member 62 attached to one axial end face of the stator core 26 (see Figure 20), and a second support member 64 attached to the other axial end face of the stator core 26.

[0087] The first support member 62 is formed using resin, which is an insulating material. The first support member 62 includes a support member main body 62A that serves as an engaging member main body and is formed in an annular shape when viewed in the axial direction. As shown in FIG. 20 , a cross section of the support member main body 62A cut along the radial and axial directions is rectangular. The radial thickness of the support member main body 62A is set to the same dimension as the radial thickness of the stator core 26. The radially inner surface of the support member main body 62A serves as a belt member abutting surface 62B that abuts against one axial end of the belt member 34 of the coil body 32 via an insulator 28 (not shown). The other axial surface of the support member main body 62A serves as a core abutting surface 62C that abuts against one axial end face of the stator core 26. The support member main body 62A is fixed to the stator core 26 by recess-projection fitting, adhesive, or the like.

[0088] 17 and 18, the first support member 62 includes a plurality of support member side protrusions 62D as second engagement portions that protrude radially inward from the radially inner surface of the support member main body 62A. In this embodiment, six support member side protrusions 62D are arranged at equal intervals in the circumferential direction. The six support member side protrusions 62D are formed in a rectangular parallelepiped shape. The six support member side protrusions 62D are arranged at positions offset to one axial side with respect to the axial center of the support member main body 62A.

[0089] 17 and 20, the second support member 64 is formed using resin, which is an insulating material, like the first support member 62. The configuration of this second support member 64 is similar to the configuration of the first support member 62. Therefore, the same reference numerals as those of the first support member 62 will be used to designate parts of the second support member 64 that correspond to those of the first support member 62.

[0090] The radially inner surface of the support member body 62A of the second support member 64 serves as a belt member abutment surface 62B that abuts against the other axial end of the belt member 34 of the coil body 32 via an insulator 28 (not shown). The surface on one axial side of the support member body 62A of the second support member 64 serves as a core abutment surface 62C that abuts against the end face on the other axial side of the stator core 26. The support member body 62A of the second support member 64 is fixed to the stator core 26 by recess-projection fitting, adhesive bonding, or the like. The six support member side protrusions 62D of the second support member 64 are arranged at positions offset toward the other axial side with respect to the axial center of the support member body 62A.

[0091] As shown in FIGS. 17 and 19 , six coil body side recesses 34D are formed at one axial end of the band member 34 of the coil body 32 as first engagement portions with which the six support member side protrusions 62D of the first support member 62 respectively engage. The coil body side recesses 34D have a rectangular shape when viewed from the radially inner side, and their edges have a U-shape that is open on one axial side. Furthermore, six coil body side recesses 34D are formed at the other axial end of the band member 34 of the coil body 32 as first engagement portions with which the six support member side protrusions 62D of the second support member 64 respectively engage. The coil body side recesses 34D have a rectangular shape when viewed from the radially inner side, and their edges have a U-shape that is open on the other axial side. Here, if the annularly wound portion of the band member 34 is defined as a band member main body 34E, then each coil body side recess 34D can be said to be formed in the band member main body 34E.

[0092] 19 and 20, the six support member side protrusions 62D of the first support member 62 are engaged with the six coil body side recesses 34D formed at one axial end of the band member 34 of the coil body 32. Also, the six support member side protrusions 62D of the second support member 64 are engaged with the six coil body side recesses 34D formed at the other axial end of the band member 34 of the coil body 32. This causes the coil body 32 to be supported on the stator core 26 via the coil body support member 60 (the first support member 62 and the second support member 64). Also, the coil body 32 is positioned circumferentially, axially, and radially relative to the stator core 26 by the coil body support member 60 (the first support member 62 and the second support member 64). In this manner, in this embodiment, by using the coil body support member 60 (first support member 62 and second support member 64), the positional accuracy of the coil body 32 relative to the stator core 26 can be ensured simply by assembling the stator 14 in a predetermined procedure.

[0093] Furthermore, in a configuration using the coil body support member 60 (first support member 62 and second support member 64), the coil body 32 can be stably held for a long period of time against stress such as torque generated in the coil body 32. Furthermore, in a configuration using the coil body support member 60 (first support member 62 and second support member 64), the coil body 32 can be prevented from rotating freely relative to the stator core 26.

[0094] Furthermore, in this embodiment, each coil body-side recess 34D is formed in a band member main body 34E that is wound annularly. This allows the coil body 32 to be supported by the stator core 26 via the coil body support members 60 (first support member 62 and second support member 64) without increasing the axial dimension of the band member 34. Furthermore, by selecting and arranging the coil body-side recess 34D at a position between a portion of one wiring pattern 40 and a portion of another wiring pattern 40 in the circumferential direction and overlapping with a portion of one of the wiring patterns in the axial direction, the axial dimension of the band member 34 can be further reduced (see FIG. 17 ).

[0095] The number, shape and dimensions of the coil body side recesses 34D and the number, shape and dimensions of the support member side protrusions 62D are not limited to those described above, and may be set appropriately taking into account the size of the motor 10, the torque generated in the coil body 32, etc.

[0096] (Second embodiment) Next, a motor 66 of a second embodiment will be described. In the motor 66 of the second embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment are denoted by the same reference numerals as those corresponding to those of the motor 10 of the first embodiment, and the description thereof may be omitted.

[0097] 21 and 22, in a motor 66 of the second embodiment, a coil body support member 60 is provided with a plurality of core engaging protrusions 62E as third engaging portions. Also, a plurality of core side recesses 26A are formed in the stator core 26 of the motor 66 of the second embodiment as fourth engaging portions with which the plurality of core engaging protrusions 62E respectively engage.

[0098] Specifically, the first support member 62 has a plurality of core engaging protrusions 62E that protrude from the surface on the other axial side of the support member main body 62A toward the other axial side. In this embodiment, five core engaging protrusions 62E are arranged at equal intervals in the circumferential direction. The five core engaging protrusions 62E are formed in a cylindrical shape. The five core engaging protrusions 62E are also arranged at positions offset radially outward from the radial center of the support member main body 62A.

[0099] The second support member 64 also has a plurality of core engaging protrusions 62E that protrude from one axial surface of the support member main body 62A toward one axial side. In this embodiment, five core engaging protrusions 62E are arranged at equal intervals in the circumferential direction. The five core engaging protrusions 62E are formed in a cylindrical shape. The five core engaging protrusions 62E are also arranged at positions offset radially outward from the radial center of the support member main body 62A.

[0100] Five core-side recesses 26A that respectively engage with the five core engaging protrusions 62E of the first support member 62 are formed at one axial end of the stator core 26 opposite the end where the coil body 32 is arranged (the radially outer end). The core-side recesses 26A are open on one axial end and on the radially outer side.

[0101] Furthermore, five core side recesses 26A that respectively engage with the five core engaging protrusions 62E of the second support member 64 are formed at the other axial end of the stator core 26 on the end opposite to the side where the coil body 32 is arranged (the radially outer end). The core side recesses 26A are open on the other axial side and the radially outer side.

[0102] Here, if the portion of stator core 26 that becomes a magnetic path is core body 26B, which serves as the armature core body, it can be said that each core-side recess 26A is formed in core body 26B.

[0103] The five core engaging protrusions 62E of the first support member 62 are engaged with the five core side recesses 26A formed on one axial side of the stator core 26, and the five core engaging protrusions 62E of the second support member 64 are engaged with the five core side recesses 26A formed on the other axial side of the stator core 26. This attaches the coil body support member 60 (the first support member 62 and the second support member 64) to the stator core 26 and positions the coil body support member 60 circumferentially relative to the stator core 26. In this way, in this embodiment, the coil body support member 60 can be positioned circumferentially relative to the stator core 26 simply by attaching the coil body support member 60 to the stator core 26.

[0104] Furthermore, in this embodiment, each core-side recess 26A is formed at the end of the stator core 26 (core body 26B) opposite to the side where the coil body 32 is arranged. This reduces the effect on the characteristics of the motor 66 compared to a configuration in which each core-side recess 26A is formed at the end of the stator core 26 (core body 26B) where the coil body 32 is arranged.

[0105] The number, shape and dimensions of the core engaging protrusions 62E and the number, shape and dimensions of the core side recesses 26A are not limited to those described above, and may be set appropriately taking into consideration the dimensions of the stator core 26 and the like.

[0106] (Third embodiment) Next, a motor 68 of a third embodiment will be described. In the motor 68 of the third embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment described above will be denoted by the same reference numerals as those of the motor 10 of the first embodiment, and the description thereof may be omitted.

[0107] As shown in Figures 23, 24 and 25, in the motor 68 of this embodiment, the portions corresponding to the coil body side recess 34D and the support member side protrusion 62D of the motor 10 of the first embodiment described above are the coil body side protrusion 34F as the first engagement portion and the support member side recess 62F as the second engagement portion, respectively.

[0108] Specifically, the first support member 62 has six support member side recesses 62F recessed radially outward from the radially inner surface of the support member main body 62A. The six support member side recesses 62F are arranged at equal intervals in the circumferential direction. Furthermore, the support member side recesses 62F have a rectangular shape when viewed from the axial direction, and the shape of the edge thereof is U-shaped with the radially inner side open. The first support member 62 has a passing recess 62G for passing the connection portion 43 of the coil body 32 in the axial direction. The passing recess 62G is recessed radially outward from the radially inner surface of the support member main body 62A.

[0109] The second support member 64 also has six support member side recesses 62F that correspond to the six support member side recesses 62F of the first support member 62, respectively.

[0110] Six coil body side protrusions 34F are formed at one axial end of the band member 34 of the coil body 32, which respectively engage with the six support member side recesses 62F of the first support member 62. Furthermore, six coil body side protrusions 34F are formed at the other axial end of the band member 34 of the coil body 32, which respectively engage with the six support member side protrusions 62D of the second support member 64. The coil body side protrusions 34F have a rectangular shape when viewed from the radial inside. Here, if the annularly wound portion of the band member 34 is defined as a band member main body 34E, each coil body side protrusion 34F is configured to protrude from the band member main body 34E to one or the other axial side.

[0111] 24 and 25, the six support member side recesses 62F of the first support member 62 are engaged with the six coil body side protrusions 34F formed at one axial end of the band member 34 of the coil body 32. Also, the six support member side recesses 62F of the second support member 64 are engaged with the six coil body side protrusions 34F formed at the other axial end of the band member 34 of the coil body 32. This causes the coil body 32 to be supported on the stator core 26 via the coil body support member 60 (the first support member 62 and the second support member 64). Also, the coil body 32 is positioned circumferentially, axially, and radially relative to the stator core 26 by the coil body support member 60 (the first support member 62 and the second support member 64). In this manner, in this embodiment, by using the coil body support member 60 (first support member 62 and second support member 64), the positional accuracy of the coil body 32 relative to the stator core 26 can be ensured simply by assembling the stator 14 in a predetermined procedure.

[0112] In addition, in this embodiment, each coil body side protrusion 34F is configured to protrude from the band member main body 34E around which the coil body 32 is wound in an annular shape. This allows the coil body 32 to be supported by the stator core 26 via the coil body support member 60 (first support member 62 and second support member 64) while suppressing any influence on the coil 16 and the connection pattern portion 40 formed on the band member 34 (band member main body 34E).

[0113] The number, shape and dimensions of the coil body side convex portions 34F and the number, shape and dimensions of the support member side concave portions 62F are not limited to those described above, and may be set appropriately taking into consideration the size of the motor 10, the torque generated in the coil body 32, etc.

[0114] (Fourth embodiment) Next, a motor according to a fourth embodiment will be described. In the motor according to the fourth embodiment, the components and parts corresponding to those of the motor 10 according to the first embodiment already described will be denoted by the same reference numerals as those of the motor 10 according to the first embodiment already described, and their description may be omitted.

[0115] FIG. 26 is an enlarged cross-sectional view schematically illustrating the cross section of an insulator 28 constituting a part of a motor according to a fourth embodiment. As shown in this figure, the insulator 28 is configured to include a base 50 formed of an insulating material and a soft magnetic portion 52 formed of a soft magnetic material within the base 50. Note that the insulator 28 of this embodiment is configured such that the entire insulator 28 includes the soft magnetic portion 52 within the base 50. As an example, in this embodiment, a resin material is used for the base 50. Furthermore, in this embodiment, atomized powder of a soft magnetic metal such as iron is used for the soft magnetic portion 52. This configuration allows the magnetic flux of the magnet 18 to be introduced into the stator core 26 via the soft magnetic portion 52 within the insulator 28, thereby reducing the magnetic resistance between the magnet 18 and the stator core 26. As a result, the magnetic flux of the magnet 18 can be effectively utilized, resulting in increased torque and a more compact motor.

[0116] (Fifth embodiment) Next, a motor according to a fifth embodiment will be described. In the motor according to the fifth embodiment, the components 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.

[0117] 27, in the motor of the fifth embodiment, a coil body support member 60 has a plurality of core engaging recesses 62H as third engaging portions. Also, a stator core 26 of the motor of the fifth embodiment has a plurality of core side protrusions 26C as fourth engaging portions that engage with the plurality of core engaging recesses 62H, respectively.

[0118] Specifically, a core engaging recess 62H is formed at the radially outer end of the support member main body 62A of the first support member 62. The core engaging recess 62H has a rectangular shape when viewed from the axial direction, and its edge is U-shaped with the radially outer side open.

[0119] A tongue-shaped core-side protrusion 26C protruding toward one axial side is formed at one axial end of the stator core 26 (the radially outer end) opposite to the side where the coil body 32 is arranged. This core-side protrusion 26C is formed in a rectangular shape when viewed radially.

[0120] Here, if the portion of the stator core 26 that forms the magnetic path is defined as the core body 26B, the core side protrusion 26C is configured to protrude from the core body 26B. Furthermore, the stator core 26 of this embodiment is configured by stacking and integrating a plurality of core constituent plates 70 cut to a predetermined shape in the axial direction. A tongue-shaped portion that forms the core side protrusion 26C is provided on the radial outside of the core constituent plate 70 that forms the end portion on one axial side of the plurality of core constituent plates 70. The core side protrusion 26C is formed by bending this tongue-shaped portion toward one axial side.

[0121] Then, the core-side protrusion 26C formed on one axial side of the stator core 26 engages with the core engaging recess 62H of the first support member 62. This attaches the coil body support member 60 (first support member 62) to the stator core 26 and positions the coil body support member 60 circumferentially relative to the stator core 26. In this way, in this embodiment, the coil body support member 60 can be positioned circumferentially relative to the stator core 26 simply by attaching the coil body support member 60 to the stator core 26.

[0122] In addition, in this embodiment, the core side protrusions 26C are formed on the end of the stator core 26 (core body 26B) opposite to the side on which the coil body 32 is disposed, and are configured to protrude from the core body 26B. This reduces the effect on the motor characteristics compared to a configuration in which each core side protrusion 26C is formed on the end of the stator core 26 (core body 26B) on the side on which the coil body 32 is disposed.

[0123] The number, shape, and dimensions of the core engaging recesses 62H and the number, shape, and dimensions of the core side protrusions 26C are not limited to those described above and may be set appropriately taking into consideration the dimensions of the stator core 26. The core engaging recesses 62H and the core side protrusions 26C may also be provided on the other axial side of the second support member 64 and the stator core 26 (not shown).

[0124] (Sixth and Seventh Embodiments) Next, a motor 72 of a sixth embodiment and a motor 74 of a seventh embodiment will be described. In the motor 72 of the sixth embodiment and the motor 74 of the seventh embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment already described will be assigned the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0125] As shown in FIGS. 28 and 29, 30 and 31, in a motor 72 of the sixth embodiment and a motor 74 of the seventh embodiment, a coil body support member 60 and an insulator 28 are integrally formed.

[0126] 28 and 29, in a motor 72 of the sixth embodiment, an insulator 28 is formed integrally with one of the first and second support members 62 and 64 constituting a coil body support member 60. The insulator 28 is formed in a cylindrical shape extending from a radially inner end of a support member main body 62A of the second support member 64 to one axial side.

[0127] 30 and 31 , in a motor 74 of the seventh embodiment, portions of the insulator 28 are formed on the first support member 62 and the second support member 64 that constitute the coil body support member 60. The insulator 28 has a two-part structure divided into two parts in the axial direction. One axial side portion of the insulator 28 is formed in a cylindrical shape extending from a radially inner end portion of the support member main body 62A of the first support member 62 to the other axial side. Furthermore, the other axial side portion of the insulator 28 is formed in a cylindrical shape extending from a radially inner end portion of the support member main body 62A of the second support member 64 to the one axial side.

[0128] In the motor 72 of the sixth embodiment and the motor 74 of the seventh embodiment, the coil body support member 60 and the insulator 28 are integrally formed. This allows the number of parts constituting the motors 72, 74 to be reduced.

[0129] (Eighth and Ninth Embodiments) Next, a motor according to an eighth embodiment and a motor according to a ninth embodiment will be described. In the motor according to the eighth embodiment and the motor according to the ninth embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment already described will be assigned the same reference numerals as those of the motor 10 of the first embodiment already described, and the description thereof may be omitted.

[0130] As shown in Figures 32 to 35, the stator core 26 of the motor of the eighth embodiment is formed by winding a core constituent plate 70, which is formed in a plate shape with its thickness in the axial direction, into an annular shape in the circumferential direction and stacking them in the axial direction. In the stator core 26 of this embodiment, the core constituent plate 70 is wound continuously in the circumferential direction. As shown in Figure 35, a core-side stepped portion 26D serving as a fourth engagement portion having a height difference in the axial direction is formed between the core body 26B at one axial end of the stator core 26 and one end 70A of the core constituent plate 70. Furthermore, a core-side stepped portion 26D serving as a fourth engagement portion having a height difference in the axial direction is formed between the core body 26B at the other axial end of the stator core 26 and the other end 70B of the core constituent plate 70.

[0131] 34 and 35, a support member side stepped portion 62J serving as a third engagement portion having a height difference in the axial direction is formed at the other axial end of the support member main body 62A of the first support member 62. Furthermore, a support member side stepped portion 62J serving as a third engagement portion having a height difference in the axial direction is formed at one axial end of the support member main body 62A of the second support member 64.

[0132] Then, the support member-side stepped portion 62J of the first support member 62 engages with the core-side stepped portion 26D formed on one axial side of the stator core 26, and the support member-side stepped portion 62J of the second support member 64 engages with the core-side stepped portion 26D formed on the other axial side of the stator core 26. This attaches the coil body support member 60 (the first support member 62 and the second support member 64) to the stator core 26 and positions the coil body support member 60 circumferentially relative to the stator core 26. In this way, in this embodiment, the coil body support member 60 can be positioned circumferentially relative to the stator core 26 simply by attaching the coil body support member 60 to the stator core 26.

[0133] 36 and 37, the stator core 26 of the motor of the ninth embodiment is formed by winding core constituent plates 70 into an annular shape in the circumferential direction and stacking them in the axial direction, similar to the stator core 26 of the motor of the eighth embodiment. One end 70A of the core constituent plate 70 at one axial end of the stator core 26 is bent so as to protrude toward one axial side (the first support member 62 side) relative to the core body 26B. Furthermore, the other end 70B of the core constituent plate 70 at the other axial end of the stator core 26 is bent so as to protrude toward the other axial side (the second support member 64 side) relative to the core body 26B. The one end 70A and the other end 70B of the core constituent plate 70 are an example of a fourth engagement portion.

[0134] A core engaging recess 62H that is open on the other axial side is formed at the other axial end of the support member body 62A of the first support member 62. Furthermore, a core engaging recess 62H that is open on one axial side is formed at one axial end of the support member body 62A of the second support member 64.

[0135] Then, the core engaging recess 62H of the first support member 62 engages with one end 70A of the core constituent plate 70 on one axial side of the stator core 26, and the core engaging recess 62H of the second support member 64 engages with the other end 70B of the core constituent plate 70 on the other axial side of the stator core 26. This attaches the coil body support member 60 (the first support member 62 and the second support member 64) to the stator core 26 and positions the coil body support member 60 circumferentially relative to the stator core 26. In this way, in this embodiment, the coil body support member 60 can be positioned circumferentially relative to the stator core 26 simply by attaching the coil body support member 60 to the stator core 26.

[0136] Furthermore, in a configuration such as the motor of the ninth embodiment, in which the core engagement recess 62H of the first support member 62 engages with one end 70A of the core constituent plate 70 on one axial side of the stator core 26, and the core engagement recess 62H of the second support member 64 engages with the other end 70B of the core constituent plate 70 on the other axial side of the stator core 26, it is possible to accommodate higher torque than the motor of the eighth embodiment.

[0137] (10th and 11th embodiments) Next, a motor 76 of a tenth embodiment and a motor 78 of an eleventh embodiment will be described. In the motor 76 of the tenth embodiment and the motor 78 of the eleventh embodiment, the members and parts corresponding to those of the motor 10 of the first embodiment, etc., already described, are given the same reference numerals as those corresponding to those of the motor 10 of the first embodiment, etc., already described, and their description may be omitted.

[0138] As shown in FIGS. 38, 39, 40 and 41, in a motor 76 of the tenth embodiment and a motor 78 of the eleventh embodiment, a part of the stator core 26 serves as a coil body support member 60.

[0139] As shown in Figures 38 and 39, the stator core 26 of the motor 76 of the tenth embodiment is formed by stacking a plurality of core constituent plates 70 cut to a predetermined shape in the axial direction and integrating them. Here, the shapes of two of the plurality of core constituent plates 70 arranged at the other end in the axial direction are configured differently from the shapes of the other core constituent plates 70. Here, the two of the plurality of core constituent plates 70 arranged at the other end in the axial direction are referred to as coil body support plates 80. The two coil body support plates 80 correspond to the second support member 64 of the motor 10 of the first embodiment and include a support member main body 62A and six support member side protrusions 62D.

[0140] The first support member 62 of the motor 76 of the tenth embodiment has the same configuration as the first support member 62 of the motor 10 of the first embodiment.

[0141] 40 and 41 , in the stator core 26 of the motor 78 of the eleventh embodiment, of the multiple core constituent plates 70, two core constituent plates 70 arranged at one end in the axial direction serve as coil body support plates 80, and two core constituent plates 70 arranged at the end on the other axial side serve as coil body support plates 80. That is, the two core constituent plates 70 arranged at the end on one axial side serve as first support members 62, and the two core constituent plates 70 arranged at the end on the other axial side serve as second support members 64.

[0142] In the motor 76 of the tenth embodiment and the motor 78 of the eleventh embodiment described above, a part of the stator core 26 can be made to function as the coil body support member 60 .

[0143] Furthermore, in the motor 76 of the tenth embodiment and the motor 78 of the eleventh embodiment described above, the cogging torque of the motors 76, 78 can be adjusted by adjusting the number, arrangement, and shape of the support member side protrusions 62D of the coil body support plate 80. Here, it is desirable to set the number of support member side protrusions 62D to a number that is an integer multiple of a prime number that is not a prime factor of the number of magnetic poles of the motors 76, 78, or to set the number of support member side protrusions 62D so that the number of magnetic poles is an integer multiple of a prime number that is not a prime factor of the number of support member side protrusions 62D. This reduces the cogging torque of the motors 76, 78. Furthermore, the circumferential positions (angles) of the multiple support member side protrusions 62D may be equally spaced or unequal. Furthermore, the support member side protrusions 62D (as viewed from the axial direction) do not have to be a simple rectangular shape, and corners may be rounded or chamfered.

[0144] Furthermore, instead of the support member convex portion 62D, the support member concave portion 62F of the motor 68 of the third embodiment described above may be formed in the coil body support plate 80. In a configuration in which the support member concave portion 62F is formed in the coil body support plate 80, the coil body 32 of the motor 68 of the third embodiment described above can be supported.

[0145] (Twelfth embodiment) Next, a motor according to a twelfth embodiment will be described. In the motor according to the twelfth embodiment, the components 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 their description may be omitted.

[0146] As shown in FIG. 42 , the basic configuration of the motor of the twelfth embodiment is similar to that of the motor 10 of the first embodiment. FIG. 42 shows a view of the stator 14 of the motor of the twelfth embodiment as viewed from the radially inner side. As shown in this figure, the first support member 62 is disposed on the opposite side (one axial side) of the stator core 26 from a position 82A, which may or may not overlap in the radial direction, near one axial end of the coil end portion 38 on one axial side of the coil 16 of the coil body 32. That is, the first support member 62 is disposed in the range indicated by D1 in FIG. 42 . The second support member 64 is disposed on the opposite side (the other axial side) of the stator core 26 from a position 82B, which may or may not overlap in the radial direction, near the other axial end of the coil end portion 38 on the other axial side of the coil 16 of the coil body 32. That is, the second support member 64 is disposed in the range indicated by D2 in FIG. 42 . The stator core 26 is disposed in the area indicated by D3.

[0147] Here, the configuration described above can also be said to be a configuration in which the coil body support member 60 (first support member 62 and second support member 64) is positioned so as not to radially overlap with the vertical portion 36 of the coil 16 of the coil body 32.

[0148] In the present embodiment described above, the coil body support member 60 (first support member 62 and second support member 64) is disposed at a position where it does not radially overlap with the vertical portion 36 of the coil 16 of the coil body 32. In addition, the coil body support member 60 (first support member 62 and second support member 64) is formed of a resin, which is a non-magnetic material. This prevents the magnetic flux at the axial end of the magnet 18 from moving toward the coil body support member 60. In other words, the magnetic flux at the axial end of the magnet 18 is prevented from becoming leakage magnetic flux. As a result, it is possible to prevent a decrease in motor output, etc.

[0149] Furthermore, since the coil body support member 60 is made of resin, the weight of the motor can be prevented from increasing compared to a configuration in which the coil body support member 60 is made of metal. Note that the resin that makes up the coil body support member 60 may be blended with a reinforcing filler such as glass fiber. The coil body support member 60 may also be made of a molding material with a base material such as rubber, ceramic, paper, or wood.

[0150] (13th, 14th and 15th embodiments) Next, a motor 88 of the thirteenth embodiment, a motor 90 of the fourteenth embodiment, and a motor 92 of the fifteenth embodiment will be described. In the motor 88 of the thirteenth embodiment, the motor 90 of the fourteenth embodiment, and the motor 92 of the fifteenth embodiment, members and parts corresponding to those of the motor 10 of the first embodiment, etc., already described, will be assigned the same reference numerals as those of the motor 10 of the first embodiment, etc., already described, and their description may be omitted.

[0151] 43, 44, and 45, in a motor 88 of the thirteenth embodiment, a motor 90 of the fourteenth embodiment, and a motor 92 of the fifteenth embodiment, a sensor 84 is attached to the first support member 62. The sensor 84 includes a sensor main body 84A formed in the shape of a rectangular block, and a sensor wiring portion 84B protruding from the sensor main body 84A. The sensor 84 is, for example, a magnetic sensor used to detect rotation of the rotor 12, a temperature sensor to detect temperature, or an acceleration sensor to detect vibration.

[0152] 43, in a motor 88 of the thirteenth embodiment, a sensor main body 84A of a sensor 84 is fixed to the radially inner surface of a support member side protrusion 62D of a first support member 62. As a result, when the sensor 84 is a magnetic sensor, the magnetism of the magnet 18 of the rotor 12 can be detected by the sensor 84 with high accuracy.

[0153] As shown in FIG. 44 , in a motor 90 of the fourteenth embodiment, a sensor mounting recess 62K is formed at the other axial end and the radially inner end of a support member body 62A of the first support member 62, respectively, into which a sensor main body 84A of a sensor 84 is mounted. The sensor main body 84A of one sensor 84 is disposed in the sensor mounting recess 62K formed at the other axial end of the support member body 62A of the first support member 62 and fixed to the support member body 62A. The sensor main body 84A of the other sensor 84 is disposed in the sensor mounting recess 62K formed at the radially inner end of the support member body 62A of the first support member 62 and fixed to the support member body 62A. The sensor main body 84A of the other sensor 84 is disposed in the sensor mounting recess 62K formed at the radially inner end of the support member body 62A of the first support member 62 and fixed to the support member body 62A. The sensor main body 84A of the other sensor 84 is disposed in close proximity to the coil body 32. Therefore, when the other sensor 84 is a temperature sensor, the temperature of the coil body 32 can be detected with high accuracy.

[0154] As shown in FIG. 45 , the first support member 62 of the motor 92 of the fifteenth embodiment includes a sensor mounting portion 62L that protrudes radially inward from the radially inner end of the support member protrusion 62D. A sensor mounting recess 62K is formed at the other axial end of the sensor mounting portion 62L, and a sensor main body 84A of the sensor 84 is disposed therein. The sensor main body 84A of the sensor 84 is disposed in the sensor mounting recess 62K formed at the other axial end of the sensor mounting portion 62L and fixed to the sensor mounting portion 62L. The sensor main body 84A of the sensor 84 is disposed in the sensor mounting recess 62K formed at the other axial end of the sensor mounting portion 62L. The sensor main body 84A of the sensor 84 is disposed adjacent to one axial end face of the magnet 18 of the rotor 12. Therefore, in the motor 92 of the fifteenth embodiment in which the sensor 84 is a magnetic sensor, the magnetic field of the magnet 18 of the rotor 12 can be detected by the sensor 84 with greater accuracy than in the motor 88 of the thirteenth embodiment.

[0155] (Configuration for winding the coil body 32 and manufacturing method) Next, the configuration and manufacturing method for winding the coil body 32 will be described.

[0156] Figure 46 shows a schematic diagram of the coil body 32 before it is wound. The configuration of this coil body 32 is similar to the configuration of the coil body 32 of the motor 10 of the first embodiment described above. Note that the coil 16, the connection pattern portion 40, and the like are not shown in Figure 46.

[0157] Here, the coil body 32 is formed by winding the band member 34 multiple times in the circumferential direction. Therefore, the circumferential length of the portion constituting the second turn of the band member 34 is longer than the circumferential length of the portion constituting the first turn of the band member 34. Furthermore, the circumferential length of the portion constituting the third turn of the band member 34 is longer than the circumferential length of the portion constituting the second turn of the band member 34. In other words, the circumferential length of the portion constituting the Nth turn of the band member 34 is longer than the circumferential length of the portion constituting the (N-1)th turn of the band member 34. Therefore, as shown in FIG. 47 , the circumferential interval P2 between the plurality of coil body-side recesses 34D formed in the portion constituting the second turn of the band member 34 is set to be larger than the circumferential interval P1 between the plurality of coil body-side recesses 34D formed in the portion constituting the first turn of the band member 34. Furthermore, the circumferential spacing P3 between the multiple coil body-side recesses 34D formed in the portion constituting the third turn of the band member 34 is set to be larger than the circumferential spacing P2 between the multiple coil body-side recesses 34D formed in the portion constituting the second turn of the band member 34. That is, the circumferential spacing PN between the multiple coil body-side recesses 34D formed in the portion constituting the Nth turn of the band member 34 is set to be larger than the circumferential spacing P(N-1) between the multiple coil body-side recesses 34D formed in the portion constituting the (N-1)th turn of the band member 34. As a result, as shown in Fig. 48, when the band member 34 of the coil body 32 is wound multiple times in the circumferential direction, the circumferential positions of the multiple coil body-side recesses 34D in each turn (each layer) are aligned.

[0158] As shown in FIG. 49 , the band member 34 of the coil body 32 described above is wound using a jig 94. The jig 94 includes a pair of rotatably supported shaft portions 96 arranged coaxially, and a pair of cylindrical rollers 98 fixed to the pair of shaft portions 96. The pair of rollers 98 are formed in a columnar shape and have the same outer diameter. Six pins 100 protruding radially outward from the radially outer surface of the roller 98 are fixed to one axial end of the roller 98 arranged on one axial side. Similarly, six pins 100 protruding radially outward from the radially outer surface of the roller 98 are fixed to the other axial end of the roller 98 arranged on the other axial side. These pins 100 are formed in a columnar shape with the radial direction as the axial direction.

[0159] First, the pair of rollers 98 are coupled together in axial contact so as to be rotatable together. Next, one end of the band member 34 of the coil body 32 is positioned along the outer circumferential surfaces of the pair of rollers 98, and each pin 100 fixed to the pair of rollers 98 is engaged with a coil body-side recess 34D formed at one end of the band member 34 of the coil body 32. Next, the pair of rollers 98 are rotated. As a result, as shown in FIG. 50, the band member 34 of the coil body 32 is wound in a predetermined layer. Note that predetermined portions of the band member 34 of the coil body 32 are fixed by adhesive, crimping, rivets, clips, or the like. This maintains the band member 34 of the coil body 32 wound in a circular shape. Next, as shown in FIG. 51, the pair of rollers 98 are moved away from each other in the axial direction, thereby removing the coil body 32 (band member 34) from the jig 94. Through the above steps, the coil body 32 is manufactured.

[0160] Note that, when there are multiple coil body-side recesses 34D within one turn, the pitch angle (the intervals in the circumferential direction) may be constant (equal) or unequal. Furthermore, when the band member 34 of the coil body 32 is wound multiple times, the band member 34 may be continuous in the circumferential direction or may be divided. The number of divisions in the circumferential direction of the band member 34 may be set arbitrarily, and may be every one turn, two turns, or n turns. Furthermore, the intervals between divisions in the circumferential direction of the band member 34 may be equal or unequal (e.g., 2 turns + 3 turns). Furthermore, when the band member 34 is divided into multiple parts in the circumferential direction, after one band member 34 has been wound, the coil body-side recesses 34D of another band member 34 can be engaged with the pin 100 and the roller 98 rotated to wind additional band members 34. Furthermore, in a configuration in which the coil body-side recess 34D formed in the band member 34 is, for example, a circular opening, the pin 100 can be made movable, thereby enabling the coil body 32 (the band member 34 in a wound state) to be removed from the jig 94. Examples of making the pin 100 movable include a configuration in which the pin 100 is detachable from the roller 98, and a configuration in which the pin 100 is embedded in the roller 98. Here, in a configuration in which the pin 100 engages with the coil body-side recess 34D, it is preferable to set the circumferential dimension of the pin 100 to decrease radially outward, as shown in FIG. 52 . This makes it easier to engage the pin 100 with the coil body-side recess 34D while the roller 98 is rotating.

[0161] Furthermore, in a configuration including a coil body side protrusion 34F like the coil body 32 of the motor 68 of the third embodiment (see FIG. 23), a jig 102 may be used in which a jig side recess 98A that engages with the coil body side protrusion 34F is formed in the roller 98, as shown in FIG. 53. By using this jig 102 and going through the same steps as those described above, the coil body 32 of the motor 68 of the third embodiment can be manufactured.

[0162] (16th embodiment) Next, a motor according to a sixteenth embodiment will be described. In the motor according to the sixteenth embodiment, the components 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 their description may be omitted.

[0163] 54 and 55 schematically show a coil body 32 constituting a part of a motor of the sixteenth embodiment. As shown in these figures, the coil body 32 is composed of multiple band members 34 wound in an annular shape. The multiple band members 34 wound in an annular shape may be arranged in a single layer in the radial direction or in multiple layers in the radial direction. In this embodiment, the coil body 32 is composed 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 with four radial layers. In this way, the coil body 32 can also be formed by multiple band members 34 wound in an annular shape. Note that the coil 16, the coil body-side recess 34D, and the like are not shown in FIGS. 54 and 55.

[0164] (17th and 18th embodiments) Next, a motor 104 of the seventeenth embodiment and a motor 106 of the eighteenth embodiment will be described. In the motor 104 of the seventeenth embodiment and the motor 106 of the eighteenth embodiment, members and parts corresponding to those of the motor 10 of the first embodiment already described will be assigned the same reference numerals as those corresponding to those of the motor 10 of the first embodiment already described, and their description may be omitted.

[0165] 56, the stator 14 of the motor 104 of the seventeenth embodiment is configured to include a coil body 32 arranged radially inside relative to the stator core 26, and a coil body 32 arranged radially outside relative to the stator core 26. The rotor 12 of the motor 104 of this embodiment also includes a magnet 18 arranged radially inside relative to the radially inside coil body 32, and a magnet 18 arranged radially outside relative to the radially outside coil body 32.

[0166] 57, the rotor 12 of the motor 106 of the eighteenth 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 106 of the eighteenth 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.

[0167] As in the motors 104 and 106 described above, the number and arrangement of the coil bodies 32 constituting the stator 14, the arrangement of the magnets 18 of the 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.

[0168] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above and can be implemented in various other modified forms without departing from the spirit of the present disclosure. Furthermore, all or part of the configurations of the embodiments described above can be combined with each other.

[0169] For example, while the example in which the multiple coils 16 on the band member 34 are connected using a star connection has been described, they may also be connected using a delta connection. The band member 34 may also be configured such that the wiring pattern 40 has different patterns on one circumference and the other circumference. The engaging member main body 62A does not have to be a 360° continuous ring, but may be a ring with a portion cut out (e.g., C-shaped). The coil body support member (engaging member) 60 or any of the engaging portions (first to fourth engaging portions) may be located only at one or the other axial end of the stator core 26. The number of poles, coils, and phases of the motor 10, as well as the number of coils connected in series and in parallel, may be appropriately selected depending on the application of the motor 10. The configuration of the motor 10 may also be applied to a generator. The configuration of the motor 10 may also be applied to an outer-rotor brushless motor in which the rotor 12 is disposed radially outside the stator 14. The configuration of the present disclosure may also be applied to a rotor configured to include a coil body 32.

[0170] The above describes one embodiment of the present disclosure, but the present disclosure is not limited to the above, and it goes without saying that it can be implemented in various other modified forms within the scope that does not deviate from the gist of the present disclosure. [Explanation of symbols]

[0171] 10 motor (rotating electric machine), 12 rotor (rotor), 14 stator (armature, stator), 16 coil, 18 magnet, 26 stator core (armature core), 26A core side recess (fourth engagement portion), 26C core side protrusion (fourth engagement portion), 26D core side step portion (fourth engagement portion), 28 insulator, 32 coil body, 34 band member, 34D coil body side recess (first engagement portion), 34E band member main body, 34F coil body side protrusion (first engagement portion), 36 vertical portion, 38 coil end portion, 60 coil body support member (engagement member), 62A support member main body (engagement member main body), 62D support member side protrusion (second engagement portion), 62E core engagement protrusion (third engagement portion), 62F Support member side recess (second engagement portion), 62H core engagement recess (third engagement portion), 62J support member side step portion (third engagement portion), 70 core constituent plate, 70A end portion of core constituent plate (fourth engagement portion), 70B end portion of core constituent plate (fourth engagement portion), 66 motor (rotating electric machine), 68 motor (rotating electric machine), 72 motor (rotating electric machine), 74 motor (rotating electric machine), 76 motor (rotating electric machine), 78 motor (rotating electric machine), 84 sensor, 88 motor (rotating electric machine), 90 motor (rotating electric machine), 92 motor (rotating electric machine), 104 motor (rotating electric machine), 106 motor (rotating electric machine)

Claims

1. an armature core (26) formed in a cylindrical shape; a coil body (32) including a band member (34) formed in a band shape using an insulating material and wound annularly in a circumferential direction, a coil (16) formed on the band member using a conductive material, and first engaging portions (34D, 34F) provided on the band member, and the coil body (32) is disposed along the armature core; an engaging member (60) attached to the armature core and having second engaging portions (62D, 62F) that engage with the first engaging portions to position the coil body relative to the armature core; Equipped with The armature (14) has the armature core and the coil body attached to the engaging member from one axial side of the coil body.

2. The belt member has a belt member body (34E) wound in a circular shape, the first engaging portion is a recess formed in the belt member main body, The engaging member has an engaging member body (62A) formed in an annular shape, The armature according to claim 1 , wherein the second engaging portion is a protrusion that protrudes from the engaging member body.

3. The band member has a band member body wound in a circular shape, the first engaging portion is a protrusion protruding from the belt member main body, The engaging member has an engaging member main body formed in an annular shape, 2. The armature according to claim 1, wherein the second engaging portion is a recess formed in the engaging member body.

4. An armature core (26) formed in a cylindrical shape; a coil body (32) including a band member (34) formed in a band shape using an insulating material and wound annularly in a circumferential direction, a coil (16) formed on the band member using a conductive material, and first engaging portions (34D, 34F) provided on the band member, and the coil body (32) is disposed along the armature core; an engaging member (60) attached to the armature core and having second engaging portions (62D, 62F) that engage with the first engaging portions to position the coil body relative to the armature core; Equipped with The engaging member has a third engaging portion (62E, 62H, 62J), and the armature core has a fourth engaging portion (26A, 26C, 26D, 70A, 70B) that engages with the third engaging portion to position the engaging member relative to the armature core.

5. The engaging member has an engaging member main body formed in an annular shape, the third engagement portion is a protrusion protruding from the engagement member main body, The armature core has an armature core body formed in a cylindrical shape, The armature according to claim 4 , wherein the fourth engagement portion is a recess formed in the armature core body.

6. The engaging member has an engaging member main body formed in an annular shape, the third engagement portion is a recess formed in the engagement member main body, The armature core has an armature core body formed in a cylindrical shape, The armature according to claim 4 , wherein the fourth engagement portion is a protrusion protruding from the armature core body.

7. The engaging member has an engaging member main body formed in an annular shape, the third engagement portion is a stepped portion formed on the engagement member main body, The armature core has an armature core body formed into a cylindrical shape by winding a core constituent plate (70) formed in a plate shape into an annular shape in the circumferential direction and laminating a plurality of core constituent plates (70) in the axial direction, 5. The armature according to claim 4, wherein the fourth engagement portion is a stepped portion formed between the armature core body and the end of the core constituent plate.

8. The engaging member has an engaging member main body formed in an annular shape, the third engagement portion is a recess formed in the engagement member main body, The armature core has an armature core body formed into a cylindrical shape by stacking a plurality of core constituent plates in the axial direction, 5. The armature according to claim 4, wherein the fourth engaging portion is an end portion of the core constituent plate bent so as to protrude toward the engaging member from the armature core body.

9. An armature core (26) formed in a cylindrical shape; a coil body (32) including a band member (34) formed in a band shape using an insulating material and wound annularly in a circumferential direction, a coil (16) formed on the band member using a conductive material, and first engaging portions (34D, 34F) provided on the band member, and the coil body (32) is disposed along the armature core; an engaging member (60) attached to the armature core and having second engaging portions (62D, 62F) that engage with the first engaging portions to position the coil body relative to the armature core; Equipped with The armature core is formed into a cylindrical shape by laminating a plurality of core constituent plates in the axial direction, An armature in which some of the core constituent plates are engaged with the coil body.

10. A cylindrically formed armature core (26), a coil body (32) including a band member (34) formed in a band shape using an insulating material and wound annularly in a circumferential direction, a coil (16) formed on the band member using a conductive material, and first engaging portions (34D, 34F) provided on the band member, and the coil body (32) is disposed along the armature core; an engaging member (60) attached to the armature core and having second engaging portions (62D, 62F) that engage with the first engaging portions to position the coil body relative to the armature core; Equipped with The central portion of the coil in the axial direction is a vertical portion (36), and both ends of the coil in the axial direction are coil end portions (38), the coil body is disposed along a radially inner or outer surface of the armature core, The engaging member is formed using a non-magnetic material, is arranged along the axial end face of the armature core, and is arranged at a position not overlapping radially with the vertical portion.

11. an insulator (28) is provided between the coil body and the armature core; 9. The armature according to claim 1, wherein the engaging member and the insulator are integrally formed.

12. The armature according to any one of claims 1 to 11, wherein a sensor (84) is attached to the engaging member.

13. the belt member is wound around the circumferential direction a plurality of times to form a plurality of layers in the radial direction, a plurality of the first engaging portions are provided at predetermined intervals in the circumferential direction in each layer of the belt member, 13. The armature according to claim 1, wherein the circumferential spacing between the plurality of first engaging portions provided on one layer is set wider than the circumferential spacing between the plurality of first engaging portions provided on another layer that is disposed radially inward of the first layer, thereby causing the circumferential positions of the plurality of first engaging portions provided on one layer to be the same as the circumferential positions of the plurality of first engaging portions provided on the other layer.

14. One of a stator (14) and a rotor (12) configured to include the armature according to any one of claims 1 to 13; the other of the stator and the rotor having a magnet (18) arranged radially opposite the coil body; A rotating electric machine (10, 66, 68, 72, 74, 76, 78, 88, 90, 92, 104, 106) comprising:

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