Insulating member, coil unit, stator, motor, and method for manufacturing stator

Abstract

The invention provides an insulating member, a coil unit, a stator, a motor, and a method for manufacturing the stator, which can prevent the magnetic circuit of a core from being narrowed, improve the performance of the motor, improve the productivity of the stator, further improve the productivity of the motor, and reduce the number of components. The insulating member (30) is capable of insulating a core (51) from a coil (10) that can be attached to the core (51), and is provided with: an insulating body section (31) that is disposed between the coil (10) and the core (51); a first engagement part 35 capable of engaging with the coil 10; and a second engaging portion 36 that can extend or protrude from the insulating main body portion 31 in the radial direction of the stator 50 and engage with the core 51.

Description

Technical Field

[0001] The present invention relates to an insulating member, a coil unit, a stator, a motor, and a method for manufacturing a stator, which are disposed between a concentrated winding coil and a core of a motor. Background Art

[0002] Conventionally, a stator as a component of a motor includes a ring-shaped yoke portion and a plurality of tooth portions as a core, and a coil is mounted on the core. The coil is wound around the tooth portions or the like and is housed in a groove created between adjacent tooth portions. In such a structure, as a means for preventing the coil from flying out of the groove, a structure in which a wedge plate is provided is known (for example, refer to Patent Document 1).

[0003] Figure 17 FIG. is a plan view of a part of an existing stator 200 extracted as viewed from the direction of the axis M0 of the motor. In Figure 17 In the example of, the core 201 has a ring-shaped yoke portion 202 and a plurality of tooth portions 203 protruding from the yoke portion 202 toward the inner side in the radial direction (axial direction of the motor). Further, for example, a concentrated winding coil 205 is mounted on each of the plurality of tooth portions 203 with an insulating sheet 204 interposed therebetween. Thus, a single groove 206 is defined between adjacent tooth portions 203, and a part of two adjacent coils 205 is housed in the groove 206.

[0004] Further, a wedge plate 208 is mounted on the side of the opening 207 of the groove 206. The wedge plate 208 is a flat plate member having, for example, a substantially U-shaped or substantially rectangular O-shaped outer peripheral shape along the tooth portion 203, and is mounted on each tooth portion 203 in such a manner that the opposing arm portions sandwich the side surface of each tooth portion 203 in the circumferential direction C.

[0005] More specifically, the wedge plate 208 has engaging convex portions 208c at both ends in the circumferential direction C. Further, engaging concave portions 203r are provided on the side surface of each tooth portion 203 in the circumferential direction C. Then, the engaging convex portions 208c are engaged with the engaging concave portions 203c to fix the wedge plate 208 to the tooth portion 203. Thereby, the detachment of the coil 205 from the tooth portion 203 (or the movement in the radial direction of the motor) is restricted.

[0006] Prior Art Documents

[0007] Patent Documents

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-158403 Summary of the Invention

[0009] Technical Problem

[0010] However, since the tooth portion 203 generates Figure 17the magnetic flux as shown by the dashed line, so if the engaging recess 203c is provided in the tooth portion 203, the magnetic circuit becomes narrow at this portion. As a result, there is a problem that the magnetic flux decreases and the motor characteristics cannot be improved.

[0011] In addition, for each of the tooth portions 203, an installation process of the spacer 204, an installation process of the coil 205, and an installation process of the wedge plate 208 are required. In this case, the assembly man-hours are large, and the rigid insulating sheet 204 takes time to handle, resulting in poor production efficiency and an increase in the number of components.

[0012] An object of the present invention is to provide an insulating component, a coil unit, a stator, a motor, and a method for manufacturing a stator, which can prevent narrowing of the magnetic circuit of the core, improve the performance of the motor, and can improve the productivity of the stator, and further can improve the productivity of the motor and reduce the number of components.

[0013] Technical solution

[0014] The present invention relates to an insulating component, which is characterized in that it is an insulating component that can insulate the core of the stator from the coil that can be installed on the core, and the insulating component has: an insulating main body portion disposed between the coil and the core; a first engaging portion that can engage with the coil; and a second engaging portion that can extend or protrude from the insulating main body portion in the radial direction of the stator to engage with the core.

[0015] In addition, the present invention relates to an insulating component, which is characterized in that it is an insulating component that can insulate the core of the stator from the coil that can be installed on the core, and the insulating component has: an insulating main body portion disposed between the coil and the core; a first engaging portion that can engage with the coil; and a second engaging portion that can engage with the outer peripheral or inner peripheral surface of the substantially annular yoke portion constituting the core.

[0016] In addition, the present invention relates to a coil unit, which is characterized in that the above-mentioned insulating component, the core component constituting the core, and the coil are integrally engaged.

[0017] In addition, the present invention relates to a stator in which the above-mentioned insulating component is sandwiched between the coil and the core.

[0018] In addition, the present invention relates to a motor having the above-mentioned stator.

[0019] In addition, the present invention relates to a method for manufacturing a stator, which is characterized in that it is a method for manufacturing a stator using the above-mentioned insulating component, and after engaging the coil with the first engaging portion, the core is engaged with the second engaging portion.

[0020] Technical effect

[0021] According to the present invention, it is possible to provide an insulating member, a coil unit, a stator, a motor, and a method for manufacturing a stator, which can prevent the narrowing of the magnetic path of the core, improve the performance of the motor, and improve the productivity of the stator, and further improve the productivity of the motor, and can reduce the number of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view showing a motor according to a first embodiment of the present invention.

[0023] Figure 2 It is a view showing a stator according to the first embodiment. Figure 2 (A) of which is a top view. Figure 2 (B) of which is an external perspective view.

[0024] Figure 3 It is a view showing a core according to the first embodiment. Figure 3 (A) of which is a top view. Figure 3 (B) of which is a top view. Figure 3 (C) of which is an external perspective view.

[0025] Figure 4 It is a view showing a coil according to the first embodiment. Figure 4 (A) of which is a front view. Figure 4 (B) of which is a side view. Figure 4 (C) of which is a bottom view.

[0026] Figure 5 It is a view showing a coil unit according to the first embodiment. Figure 5 (A) of which is a cross-sectional view. Figure 5 (B) of which is a top view. Figure 5 (C) of which is a front view. Figure 5 (D) of which is a rear view. Figure 5 (E) of which is a side view.

[0027] Figure 6 It is a view showing an insulating member according to the first embodiment. Figure 6 (A) of which is an external perspective view. Figure 6 (B) of which is a front view. Figure 6 (C) of which is a rear view. Figure 6 (D) of which is a side view. Figure 6 (E) of which is a top view.

[0028] Figure 7 It is a flowchart for explaining a method for manufacturing a coil unit according to the first embodiment.

[0029] Figure 8 It is a view for explaining a method for manufacturing a coil unit according to the first embodiment. Figure 8(A) is a side view, Figure 8 of (B) to Figure 8 (E) is a top schematic view.

[0030] Figure 9 It is a side view for explaining the manufacturing method of the coil unit of the first embodiment.

[0031] Figure 10 It is a perspective view for explaining the manufacturing method of the stator of the first embodiment.

[0032] Figure 11 It is a view showing the second embodiment of the present invention, Figure 11 (A) is a top view of the core, Figure 11 (B) is a side view of the insulating member, Figure 11 (C) is a top view of the insulating member.

[0033] Figure 12 It is a view showing the manufacturing method of the coil unit of the second embodiment, Figure 12 (A) is a top view, Figure 12 (B) is a top view, Figure 12 (C) is a side view, Figure 12 (D) is a top view, Figure 12 (E) is a top view, Figure 12 (F) is a side view.

[0034] Figure 13 It is a view showing the manufacturing method of the stator of the second embodiment, Figure 13 (A) is a top view, Figure 13 (B) is a top view, Figure 13 (C) is a side view, Figure 13 (D) is a top view.

[0035] Figure 14 It is a view showing the third embodiment of the present invention, Figure 14 (A) is a top view of the core, Figure 14 (B) is a side view of the insulating member, Figure 14 (C) is a top view of the insulating member.

[0036] Figure 15 It is a view showing the manufacturing method of the coil unit of the third embodiment, Figure 15 (A) is a top view, Figure 15 (B) is a top view, Figure 15 (C) is a side view.

[0037] Figure 16 It is a view showing the manufacturing method of the stator of the third embodiment, Figure 16 (A) is a top view,Figure 16 (B) is a side view, Figure 16 (C) is a top view, Figure 16 (C) is a side view, Figure 16 (D) is a top view.

[0038] Figure 17 It is a top view showing an existing motor.

[0039] Symbol Explanation

[0040] 10 Coil

[0041] 20 Coil Unit

[0042] 30 Insulating Component

[0043] 31 Insulating Main Body

[0044] 32 Sleeve Portion

[0045] 33 Flange Portion

[0046] 34 Slit

[0047] 35 First Engaging Portion

[0048] 36 Second Engaging Portion

[0049] 50 Stator

[0050] 51 Core

[0051] 52 Core Component

[0052] 53 Yoke Portion

[0053] 53P Split Yoke Portion

[0054] 54 Tooth Portion

[0055] 58 Notch Portion

[0056] 59 Groove

[0057] 70 Rotor

[0058] 71 Magnet

[0059] 80 Shaft Component

[0060] 82 Bearing

[0061] 90 Housing (Outer Shell)

[0062] 100 Motor

[0063] 321A, 321B Circumferential Side

[0064] 321C, 321D Axial Side

[0065] 321D Axial Side

[0066] 351 First Arm

[0067] 352 Claw

[0068] 353 Inclined Surface

[0069] 354 Engaging Surface

[0070] 361 Second Arm

[0071] 362 Claw

[0072] 363 Inclined Surface

[0073] 364 Engaging Surface

[0074] 531 Inner Side Surface

[0075] 532 Outer Side Surface

[0076] 533 Recess Detailed Embodiment

[0077] Hereinafter, with reference to the drawings, embodiments of the present invention will be described in detail. It should be noted that in the subsequent drawings, some structures are appropriately omitted to simplify the drawings. In addition, in the subsequent drawings, the sizes, shapes, thicknesses, etc. of the components are appropriately exaggerated.

[0078] <First Embodiment>

[0079] <Motor>

[0080] First, with reference to Figure 1 , the motor 100 of the present invention will be described. Figure 1 is a cross-sectional view for explaining the outline of the motor 100 of the present embodiment. As an example, Figure 1 shows an inner rotor type motor 100.

[0081] The directions in the present embodiment are defined based on the motor 100. In addition, hereinafter, the axis center of the motor 100 will be referred to as the motor axis M0. Specifically, the rotational direction centered on the motor axis M0 is called the circumferential direction C (of the motor 100), and the extending direction of the line segment passing through the motor axis M0 when viewed from above in the direction of the motor axis M0 (in the Figure 1 is the up and down direction) is called the radial direction R (of the motor 100). The side closer to the motor axis M0 in the radial direction R is called the radial inner side RI, and the side farther from the motor axis M0 is called the radial outer side RO.

[0082] As shown in Figure 1As shown, the motor 100 is, for example, a three-phase motor, which has a housing (outer shell) 90, a shaft member 80, a rotor 70, a stator 50, etc., and the rotor 70 is assembled in a manner capable of rotating relative to the stator 50. The shaft member 80 is a columnar member, which rotates around its central axis (motor shaft M0) (in the circumferential direction C) while being supported by bearings 82, for example. A device to be driven (not shown) is connected to one end of the shaft member 80 via a power transmission mechanism such as a gear.

[0083] The rotor 70 is provided with magnets 71 in its circumferential direction C and rotates together with the shaft member 80. In this example, the stator 50 is arranged on the outer side in the radial direction R of the rotor 70. The stator 50 is provided with coils 10 arranged in the circumferential direction C, and a force for rotating the rotor 70 is generated by these coils 10. Hereinafter, although detailed illustrations are omitted, the external terminals of the stator 50 are connected to a drive circuit or a power source that supplies power to the motor 100 via leads or the like. As Figure 1 shown, the housing (outer shell) 90 has a substantially cylindrical shape that integrally covers the stator 50 and the rotor 70. The housing 90 is fixed to the shaft member 80.

[0084] The motor 100 applies a drive current to the coils 10 from a power source or a drive circuit via a bus bar (not shown). As a result, a magnetic flux is generated in the stator 50 (tooth portion 54). And, due to the action of the magnetic flux between the tooth portion 54 and the magnets 71, a torque in the circumferential direction C is generated. As a result, the rotor 70 and the housing 90 rotate around the axis of the shaft member 80 (motor shaft M0) relative to the stator 50.

[0085] Figure 2 is a view showing the stator 50 extracted, Figure 2 where (A) is a top view observed from the direction of the motor shaft M0, Figure 2 and (B) is a perspective view. In addition, Figure 3 is a view showing the core 51, Figure 3 where (A) is a top view of the core 51 observed from the direction of the motor shaft M0, Figure 3 and (B) is a top view showing a part of the core 51 (core member 52), Figure 3 and (C) is an external perspective view showing a part of the core 51 (core member 52).

[0086] Referring to Figure 2 、 Figure 3 , the stator 50 has a substantially ring-shaped core 51 and a plurality of coils 10 mounted on the core 51. Specifically, the core 51 of the stator 50 has a substantially ring-shaped yoke portion 53 and a plurality of tooth portions 54 protruding from the yoke portion 53 in the direction of the motor shaft M0 (radial inner side RI).

[0087] In addition, as Figure 3As shown in (A) of FIG. Figure 3 , (B) of Figure 3 , and (C) of FIG. Figure 2 , the core member 52 has one tooth portion 54 and a split yoke portion 53P, and is a member that is substantially T-shaped in a plan view. The split yoke portion 53P is continuous with the base end side when the front end of the tooth portion 54 with the motor shaft M0 side (radial inner side RI) as the protruding direction. The surface on the radial outer side RO of the split yoke portion 53P (outer side surface 532) is the surface that constitutes the outer peripheral surface 53O of the substantially annular yoke portion 53, and a recess 533 extending in the direction of the motor shaft M0 is provided in a part thereof (see Figure 3 (B) of FIG.

[0088] Figure 4 FIG. Figure 4 (A) is a front view seen from the direction of the motor shaft M0 when the coil 10 of the present embodiment is mounted on the stator 50, Figure 4 (B) is a side view seen from the right side of Figure 4 (A) of FIG. Figure 4 (C) is a plan (bottom view) seen from below of Figure 4 (A) of FIG.

[0089] As an example, the coil 10 of the present embodiment is mounted on the stator 50. The coil 10 is a spiral structure, and a region of one turn (the region indicated by the large dashed arrow in Figure 4 (A) of FIG., hereinafter referred to as the "one-turn region CR") is wound in such a manner that it substantially overlaps in the direction of the spiral axis SC multiple times, that is, a so-called concentrated-wound coil.

[0090] The coil 10 in this example is a flat standing coil. The flat standing coil can be a coil formed by continuously connecting a plurality of strip-shaped flat conductors (coil sheets) to form a spiral structure (in a completed state, it becomes a structure in which a flat conductor is wound), or a coil formed by winding a long flat conductor to form a spiral structure. In addition, in these cases, the flat conductor can also be formed by stamping a round (conductive) wire. A round (conductive) wire can also be further wound to form a spiral structure.

[0091] Figure 4Although detailed illustration of the coil 10 shown is omitted, an insulating resin is attached around a conductor (e.g., a flat conductor) constituting a spiral structure. The insulating resin is continuously provided from one end ST side to the other end ET side of the coil 10 along the spiral traveling direction, and each circumferential region CR of the spiral structure is insulated by the insulating resin. It should be noted that the ends (one end ST and the other end ET) of the coil 10 are connection portions (terminals) connected to other components, and the insulating resin may not be provided.

[0092] Figure 5 FIG. is a view showing the coil unit 20 of the present embodiment. Figure 5 FIG. (A) is a view showing the coil unit 20 constituting the stator 50, which is a schematic view showing a part of the stator 50 extracted when viewed from the direction of the motor shaft M0, and is a sectional view with a plane perpendicular to the motor shaft M0 as a section. Figure 5 FIG. (B) is a plan view of one coil unit 20 when viewed from the direction of the motor shaft M0. Figure 5 FIG. (C) is a front view of the coil unit 20 when viewed from the radially inner side RI. Figure 5 FIG. (D) is a rear view of the coil unit 20 when viewed from the radially outer side RO. Figure 5 FIG. (E) is a side view of the coil unit 20 when viewed from the circumferential direction C ( Figure 5 on the left side of FIG. (C)).

[0093] The coil unit 20 of the present embodiment is formed by integrating Figure 3 the core member 52 shown in FIG. (B), Figure 3 the coil 10 shown in FIG. (C), and the insulating member 30. Figure 4 One coil 10 is mounted on one core member 52. More specifically, the coil 10 of the present embodiment is mounted on the outside of one tooth portion 54. One coil 10 is a coil in which a circumferential region CR of a conductor surrounding the outside of one tooth portion 54 is continuously formed so as to overlap a plurality of times in the protruding direction of the tooth portion 54 to constitute a spiral structure.

[0094] One coil 10 is mounted on one core member 52. More specifically, the coil 10 of the present embodiment is mounted on the outside of one tooth portion 54. One coil 10 is a coil in which a circumferential region CR of a conductor surrounding the outside of one tooth portion 54 is continuously formed so as to overlap a plurality of times in the protruding direction of the tooth portion 54 to constitute a spiral structure.

[0095] As Figure 5 shown in FIG. (A), Figure 5 FIG. (B), when each coil 10 is mounted on the tooth portion 54, the innermost circumferential region CR (innermost circumferential one - turn region CRI) closest to the radially inner side RI faces the rotor 70, and the outermost circumferential region CR (outermost circumferential one - turn region CRO) closest to the radially outer side RO faces the inner side surface 531 of the divided yoke portion 53P continuous with the base end side of the tooth portion 54 with the insulating member 30 interposed therebetween.

[0096] Although the outer side surface 532 of the divided yoke portion 53P is a surface (a part of the outer peripheral surface 53O) that constitutes the outer periphery of the substantially annular yoke portion 53 and is a curved surface, the inner side surface 531 of the divided yoke portion 53P becomes a flat surface that follows the circumferential region CR of the coil 10.

[0097] An insulating member 30 is interposed between the coil 10 and the core member 52. Specifically, the insulating member 30 is a resin molded body configured to cover the inner side surface 531 of the divided yoke portion 53P and the circumferential side surface 541 of the tooth portion 54 (the surface opposed to the inner peripheral surface of the spiral structure of the coil 10). The coil 10 and the core member 52 are insulated and integrally fixed by the insulating member 30 to form the coil unit 20.

[0098] The insulating member 30 has a first engaging portion 35 and a second engaging portion. The first engaging portion 35 engages with the inner periphery of the spiral structure body of the coil 10. In addition, the second engaging portion 36 engages with the recess 533 of the core member 52. Thereby, the detachment of the coil 10 from the tooth portion 54 is restricted. Therefore, a wedge plate for blocking the opening OP of the slot divided by the adjacent tooth portions 54 is not required.

[0099] Figure 6 It is a view showing the insulating member 30. Figure 6 (A) of is an external perspective view observed from the circumferential C side. Figure 6 (B) of is a front view observed from the radially inner side RI. Figure 6 (C) of is a rear view observed from the radially outer side RO. Figure 6 (D) of is a side view observed from the circumferential C ( Figure 6 the left side of (B) of ). Figure 6 (E) of is a top view observed from the direction of the motor shaft M0.

[0100] The insulating member 30 has an insulating main body portion 31, a first engaging portion 35, and a second engaging portion 36, and is a resin molded body integrally formed by using an insulating resin material, and can insulate the core 51 (core member 52) from the coil 10.

[0101] The insulating main body portion 31 is disposed between the coil 10 and the core 51. Specifically, as Figure 6 (A) of shows, the insulating main body portion 31 has a sleeve portion 32 and a flange portion 33. The sleeve portion 32 is a substantially square tube shape with both ends in the radial direction R (the front end side and the base end side of the tooth portion 54) open, and the tooth portion 54 can be inserted therethrough. That is, the sleeve portion 32 is a substantially square tube shape following the shape of the tooth portion 54 and can be disposed close to or in contact with the outer side (and the outer surface) of the tooth portion 54 (refer to Figure 5 ).

[0102] The flange portion 33 is provided around the opening on one side (radial outer side RO, proximal end side of the tooth portion 54) of the sleeve portion 32, and has a substantially rectangular shape corresponding to the shape of the inner side surface 531 of the divided yoke portion 53P of the core member 52 ( Figure 6 of (B), Figure 6 of (C)), and can be disposed opposite to the inner side surface 531 so as to be close to or in contact with it (see Figure 5 ).

[0103] Hereinafter, the sleeve portion 32 is made to correspond to the tooth portion 54. The radially inner side RI of the sleeve portion 32 is referred to as the front end side, and the radially outer side RO of the sleeve portion 32 is referred to as the proximal end side. In addition, regarding the four surfaces constituting the substantially square tube-shaped sleeve portion 32, the two surfaces opposed in the circumferential direction C are referred to as circumferential side surfaces 321A and 321B, and the two surfaces opposed in the direction of the motor shaft M0 are referred to as axial side surfaces 321C and 321D.

[0104] The first engaging portion 35 can engage with the coil 10. Specifically, as shown in Figure 6 of (A), Figure 6 of (D), Figure 6 of (E), the first engaging portion 35 has a first arm 351 and a claw 352 provided at its end. The first arm 351 is configured to elastically flex (be elastically deformable) in the circumferential direction C. Specifically, in this example, as shown in Figure 6 of (A), Figure 6 of (D), the first arm 351 is a portion cut from the sleeve portion 32 into a tongue shape by a plurality of slits 34 respectively provided on the circumferential side surfaces 321A and 321B of the sleeve portion 32. The slits 34 are provided so as to be cut from the front end side of the sleeve portion 32 toward the proximal end side and up to a position in the middle of the radial direction R before reaching the proximal end side. In this example, four slits 34 are provided on each of the circumferential side surfaces 321A and 321B, whereby two first arms 351 are provided on each of the circumferential side surfaces 321A and 321B.

[0105] The four first arms 351 are configured to be in a cantilever beam shape integral with the sleeve portion 32 on the proximal end side of the sleeve portion 32, and the front end side of the sleeve portion 32 is a free end. The first arm 351 forms a part of the insulating main body portion 31 (also serves as a part of the insulating main body portion 31). On the front end side of the sleeve portion 32, the four first arms 351 are independent of each other and can elastically deform in the circumferential direction C. In addition, a claw 352 is provided at the front end of each first arm 351. As shown in Figure 6 of (A), Figure 6 of (E), the claw 352 has an inclined surface 353 whose protruding amount increases from the front end side toward the proximal end side, and an engaging surface 354 facing the radial outer side RO.

[0106] The claws 352 on the circumferential side surface 321A and the claws 352 on the circumferential side surface 321B project the engaging surfaces 354 outward from the first arm 351 in a back-to-back manner with their respective inclined surfaces 353 facing each other in the circumferential direction C.

[0107] In the present embodiment, as Figure 5 shown, the coil 10 is mounted on the outside of the sleeve portion 32. At this time, the engaging surface 354 of the claw 352 is configured to engage with the inner circumference of the coil 10 (specifically, the inner circumference of the one-week region CR on the radially inner side RI of the coil 10).

[0108] The second engaging portion 36 of the insulating member 30 can extend or project along the radial direction R of the stator 50 to engage with the core 51. Alternatively, the second engaging portion 36 can engage with the surface constituting the outer circumference or the inner circumference of the yoke portion 53. Specifically, as Figure 6 shown in (A) of Figure 6 shown in (D) of Figure 6 shown in (E) of Figure 6 shown in (A) of Figure 6 shown in (D) of Figure 6 shown in (A) of Figure 6 shown in (D) of

[0109] In the present embodiment, as Figure 5 shown, the flange portion 33 faces the inner side surface 531 of the divided yoke portion 53P, and the insulating member 30 is mounted on the core member 52 with the tooth portion 54 received in the sleeve portion 32. At this time, the engaging surface 364 of the claw 362 is configured to engage with the core 51 (specifically, the recess 533 provided on the surface of the outer circumference of the substantially annular yoke portion 53).

[0110] <Manufacturing Method (Assembly Method) of Coil Unit and Stator>

[0111] Refer to Figures 7 to 9 , and the manufacturing method of the coil unit 20 will be described. Figure 7 is a flowchart showing an example of the manufacturing method of the coil unit 20. Figure 8 and Figure 9 are schematic diagrams showing an example of the manufacturing method of the coil unit in time series. Figure 8 (A) of is a side view of the coil 10 and the insulating member 30 observed from the circumferential direction C, Figure 8 (B) of is a schematic diagram showing the relationship between the insulating member 30 and the coil 10 in the engaged state, and is a top view observed from the direction of the motor shaft M0. Figure 8 (C) of ~ Figure 8 (E) of is a schematic top view observed from the direction of the motor shaft M0 showing the deformed state of the first engaging portion 35.

[0112] Figure 9 (A) of is a side view of the insulating member 30 and the core member 52 observed from the circumferential direction C, Figure 9 (B) of is a schematic diagram showing the relationship between the insulating member 30 and the divided yoke portion 53P in the engaged state, and is a side view observed from the circumferential direction C. Figure 9 (C) of ~ Figure 9 (E) of is a schematic side view observed from the circumferential direction C showing the deformed state of the second engaging portion 36.

[0113] First, the coil 10 is formed ( Figure 7 , step S1). The coil 10 is formed, for example, by pressing and joining the end faces of a plurality of strip-shaped conductor sheets (coil sheets) to form a spiral structure. Alternatively, a spiral structure is formed by winding a long wire (round wire, flat wire, etc.). The forming method of the coil 10 is not limited to this example as long as a concentrated-wound spiral structure is formed.

[0114] Next, as shown in Figure 8 (A) of, the coil 10 is disposed on the front end side of the sleeve portion 32 of the insulating member 30 so that the coil 10 is engaged with the insulating member 30 ( Figure 7 , step S3).

[0115] Here, as shown in Figure 8 (B) of, a predetermined gap is ensured between the insulating member 30 and the coil 10, and it is configured such that the claws 352 can be engaged with the coil 10. Specifically, in the two first arms 351 where the circumferential side surfaces 321A and 321B of the insulating member 30 are in opposed positions, the interval L1 between the outer side surfaces in the circumferential direction C (the interval between the front end portions of the claws 352) is set to be smaller than the interval L2 in the circumferential direction C of the inner circumference of the coil 10.

[0116] On the other hand, in the two first arms 351 located at opposite positions, the maximum separation distance (distance between the maximum protrusions) L3 between the claws 352 (engagement surfaces 354) is set to be larger than the interval L2 on the circumferential direction C of the inner circumference of the coil 10.

[0117] In addition, the length L4 (thickness in the helical axis direction) in the radial direction R of the coil 10 is set to be slightly smaller than the length L5 from the base end side (flange portion 33) of the first arm 351 to the engagement surface 354. It should be noted that in Figure 8 (B) to Figure 8 (E) of, the gap between the coil 10 and the insulating member 30 is shown enlarged, but actually, when the coil 10 is engaged with the insulating member 30, the coil 10 approaches (is in close contact with) the insulating member 30 to such an extent that it cannot move (wobble).

[0118] According to such a structure, as shown in Figure 8 (C) of, if the sleeve portion 32 is inserted through the inner circumference of the coil 10 from its front end side (claw 352 side) and pressed in from the radially outer side RO toward the radially inner side RI, then as shown in Figure 8 (D) of, the inclined surface 353 of the claw 352 contacts the inner circumference of the coil 10, and the first arm 351 is gradually elastically deformed in such a manner that the claw 352 approaches in the circumferential direction C along with the protruding amount of the inclined surface 353 (in a manner toward the helical axis center side of the coil 10). And, as shown in Figure 8 (E) of, when the claw 352 protrudes from the innermost circumference one - turn region CRI of the coil 10, the elastically deformed first arm 351 is restored, and the engagement surface 354 of the claw 352 is engaged with the inner circumference of the innermost circumference one - turn region CRI of the coil 10. Thus, the coil 10 is engaged with the first engaging portion 35.

[0119] Next, as shown in Figure 9 (A) of, the insulating member 30 is disposed on the front end side of the tooth portion 54, and the core 51 (core member 52) is engaged with the insulating member 30 ( Figure 7 , step S5).

[0120] Here, as shown in Figure 9 (B) of, a predetermined gap is ensured between the insulating member 30 and the core member 52 (divided yoke portion 53P), and the claw 362 is configured to be able to engage with the divided yoke portion 53P. Specifically, for the two second arms 361 of the insulating member 30, the interval between the inner side surfaces in the motor shaft M0 direction (interval between the front end portions of the claws 362) L7 is set to be larger than the length (height) L6 of the divided yoke portion 53P in the motor shaft M0 direction.

[0121] On the other hand, the minimum separation distance (distance between the maximum protrusions) L8 between the two claws 362 (engagement surfaces 364) located at opposed positions is set to be smaller than the length L6 in the motor shaft M0 direction of the divided yoke portion 53P.

[0122] In addition, the length (thickness) L9 in the radial direction R of the divided yoke portion 53P (here, the thinnest portion in the divided yoke portion 53P, the shortest length from the extension line of the inner side surface 531 to the recess 533, refer to Figure 5 (A)) is set to be slightly smaller than the length L10 from the base end side (flange portion 33) of the second arm 361 to the engagement surface 364. It should be noted that in Figure 9 (B) to Figure 9 (E), the gap between the divided yoke portion 53P and the insulating member 30 is shown enlarged, but actually, when the divided yoke portion 53P is engaged with the insulating member 30, the divided yoke portion 53P approaches (comes into close contact with) the insulating member 30 to such an extent that it cannot move (wobble).

[0123] According to such a structure, as shown in Figure 9 (C), if the tooth portion 54 is inserted between the second arms 361 from its front end side and the core member 52 is pressed from the radial outer side RO toward the radial inner side RI, then as shown in Figure 9 (D), the inclined surfaces 363 of the claws 362 come into contact with the upper and lower surfaces in the motor shaft M0 direction of the core 51 respectively, and the second arms 361 are gradually elastically deformed in such a manner that the two claws 362 are separated in the motor shaft M0 direction along with the protruding amount of the inclined surfaces 363. And as shown in Figure 9 (E), when the claws 362 protrude from the divided yoke portion 53P (recess 533), the elastically deformed second arms 361 are restored, and the engagement surfaces 364 of the claws 362 are hooked on the recess 533 of the divided yoke portion 53P to achieve engagement. Thus, the coil 10, the insulating member 30, and the core member 52 are integrally engaged to assemble the coil unit 20.

[0124] The insulating member 30 has a minimum required clearance from the coil 10 and from the core member 52. The first arm 351 of the insulating member 30 elastically deforms when engaging with the coil 10. That is, after the claw 352 engages with the coil 10, in order to disengage the insulating member 30 from the coil 10, elastic deformation of the first arm 351 (elastic deformation toward the center side of the spiral axis) is required. However, if, after engaging the insulating member 30 with the coil 10, the tooth portion 54 of the core member 52 is inserted through the sleeve portion 32 and the claw 362 is engaged with the core member 52, elastic deformation of the first arm 351 is restricted in the sleeve portion 32. That is, by engaging the insulating member 30 with the core member 52, disengagement of the insulating member 30 from the coil 10 can be prevented. In addition, by using the first engaging portion 35 and the second engaging portion 36 of the insulating member 30, disengagement of the coil 10 from the tooth portion 54 (radial movement along the radial direction R) can be prevented, and movement of the coil 10 in the direction of the motor shaft M0 is also restricted.

[0125] Conventionally, in order to prevent disengagement of the coil, it has been necessary to fix the wedge plate 208 to the opening 207 of the groove 206, and an engaging recess 203c for fixing the wedge plate 208 has been provided in the tooth portion 203. Therefore, near the engaging recess 203c, the magnetic circuit becomes narrow and the magnetic flux decreases. As a result, there has been a problem that the motor characteristics cannot be improved. In addition, for each of the tooth portions 203, there has been a problem of a large number of assembly man-hours, poor production efficiency, and an increase in the number of components, because an installation process for the insulating sheet 204, an installation process for the coil 205, and an installation process for the wedge plate 208 are required.

[0126] According to the present embodiment, there is no need for a wedge plate for blocking the opening OP of the groove, and there is no need to provide a recess for fixing the wedge plate in the tooth portion 54. Therefore, narrowing of the magnetic circuit at the tooth portion 54 can be prevented, and the performance of the motor can be improved. In addition, the insulating member 30, which is a resin molded product, has higher rigidity than an insulating sheet and is easier to handle. In addition, since the insulating unit between the core 51 and the coil 10 and the unit for preventing disengagement of the coil 10 from the core 51 can be realized by one insulating member 30, there is no need for the conventional wedge plate. Therefore, the productivity of the stator can be improved, and further the productivity of the motor can be improved, and the number of components can also be reduced.

[0127] Next, with reference to Figure 10 , the manufacturing method of the stator 50 will be described. Figure 10 is an external perspective view showing the manufacturing method of the stator 50 in chronological order. In the manufacturing method of the stator 50 of the present embodiment, the above-described insulating member 30 of the present embodiment is used, and after engaging the coil 10 with the first engaging portion 35 of the insulating member 30, the core 51 is engaged with the second engaging portion 36 of the insulating member 30.

[0128] Specifically, as in Figure 8As shown, the sleeve portion 32 of the insulating member 30 is inserted through the inner circumference of the coil 10, and the inner circumference of the coil 10 is engaged with the claw 352 of the first engaging portion 35. Next, as Figure 9 shown, the core member 52 constituting the core 51 is engaged with the insulating member 30. Specifically, the divided yoke portion 53P (recess 533) of the core member 52 is engaged with the claw 362 of the second engaging portion 36.

[0129] Thereby, the coil unit 20 is assembled. As shown in Figure 10 (A) thereof, a plurality of such coil units 20 are prepared and arranged in a ring shape ( Figure 10 (B) thereof). At this time, the positioning unit of the jig (not shown) is engaged with the recess 533 of the divided yoke portion 53P (for example, near the center in the direction of the motor shaft M0 of the recess 533, etc.), and the circumferential positioning of each coil unit 20 in the circumferential direction C is performed. Then, the coil units 20 are fixed by interference fit or the like. Thus, the substantially ring-shaped core 51 is constituted by a plurality of core members 52. Specifically, the substantially ring-shaped yoke portion 53 is constituted by the divided yoke portion 53P, and the outer circumference of the substantially ring-shaped yoke portion 53 is constituted by the outer side surface 532 of the divided yoke portion 53P. In this way, the stator 50 shown in Figure 2 is assembled.

[0130] As described above, in the present embodiment, the recess 533 with which the positioning unit when the coil units 20 are arranged in a ring shape is engaged is used, and the second engaging portion 36 (claw 362) of the insulating member 30 is engaged (also serves as the recess 533). Therefore, it is not necessary to remanufacture the core 51 (core member 52) in order to fix the insulating member 30 of the present embodiment, and the insulating member 30 can be easily fixed to the existing core 51.

[0131] The above has been described by taking the stator 50 adopted by the inner rotor type motor as an example, but the outer rotor type motor can also be implemented in the same manner.

[0132] <Second Embodiment>

[0133] Refer to Figures 11 to 13 to describe the second embodiment. The second embodiment is an example in the case where the insulating member 30 of the present invention is applied to the stator 50 adopted by the outer rotor type motor.

[0134] Figure 11(A) is a schematic view showing a part of the core 51 of the outer rotor type, and is a top view observed from the direction of the motor shaft M0. In this case, the core 51 is composed of a substantially annular (non-divided) yoke portion 53 and a plurality of core members 52 that are substantially I-shaped in a top view. The core member 52 has a notch portion 58 that is a tooth portion 54 and protrudes in the radial inner side RI in the direction of the motor shaft M0. The yoke portion 53 has a groove 59 on its outer peripheral surface. Each groove 59 is cut in the direction of the motor shaft M0, and a plurality of them are arranged at equal intervals in the circumferential direction C. In addition, on the inner peripheral surface of the yoke portion 53, a plurality of concave portions 533 are provided at a predetermined distance apart in the circumferential direction C.

[0135] Figure 11 (B) is a side view of observing the insulating member 30 from the circumferential direction C (a side view corresponding to Figure 6 (D)), Figure 11 (C) is a top view of observing the insulating member 30 from the direction of the motor shaft M0 (a top view corresponding to Figure 6 (E)).

[0136] The insulating member 30 has an insulating main body portion 31, a first engaging portion 35, and a second engaging portion 36, and is a resin molded body integrally formed by using an insulating resin material, and can insulate the core 51 (core member 52) from the coil 10.

[0137] The first engaging portion 35 is the same as that in the first embodiment and can engage with the inner circumference of the coil 10. In this case, one second engaging portion 36 is provided on one side (here, the upper side) in the direction of the motor shaft M0 of the flange portion 33. The second engaging portion 36 extends or protrudes radially inward RI with the flange portion 33 as the base end. In addition, the claw 352 of the first engaging portion 35 is located on the radial outer side RO, and the claw 362 of the second engaging portion 26 is located on the radial inner side RI. The other structures are the same as those in the first embodiment.

[0138] Refer to Figure 12 to describe the manufacturing method of the coil unit 20 in the second embodiment. Figure 12 (A), Figure 12 (B), Figure 12 (D), Figure 12 (E) are top views of observing the coil 10 and the insulating member 30 from the direction of the motor shaft M0. Figure 12 (C) is a side view of observing Figure 12 (B) from the circumferential direction C ( Figure 12 the right side of (B)), Figure 12 (F) is a side view of observing Figure 12 (D) from the circumferential direction C ( Figure 12 the right side of (D)).

[0139] First, asFigure 12 As shown in (A) of, the coil 10 is mounted on the outside of the sleeve portion 32. Specifically, the sleeve portion 32 is inserted through the inner circumference of the coil 10 (helical structure) from its front end side (the claw 352 side of the first engaging portion 35), and the coil 10 is pressed from the radially outer side RO toward the radially inner side RI. The first engaging portion 35 is the same as in the first embodiment, and the first arm 351 is gradually elastically deformed so as to face the center side of the helical axis of the coil 10. When the claw 352 protrudes from the coil 10, the elastically deformed first arm 351 returns to its original shape, and the engaging surface 354 of the claw 352 is engaged with the inner circumference of the outermost peripheral region CRO of the coil 10. Thus, as Figure 12 in (B) of Figure 12 and (C) of, the coil 10 is engaged with the first engaging portion 35.

[0140] Next, the core member 52 (tooth portion 54) is mounted on the above-described member. Specifically, as Figure 12 shown in (D) of, the notch portion 58 of the tooth portion 54 is arranged so as to face the claw 352 of the first engaging portion 35, and the tooth portion 54 is inserted through the inside of the sleeve portion 32 from the notch portion 58 side and pressed in the radial direction R. Thus, as Figure 12 in (E) of Figure 12 and (F) of, a coil unit 20 is assembled in which an insulating member 30 is interposed between the coil 10 and the core member 52 (tooth portion 54).

[0141] In the case of the second embodiment, the stator 50 is assembled by fixing the coil unit 20 to the substantially annular yoke portion 53, so that the coil 10, the insulating member 30 and the core 51 are integrally engaged.

[0142] Refer to Figure 13 to describe the manufacturing method of the stator 50. Figure 13 (A) of Figure 13 and (B) of are top views of the core 51 and the stator 50 as viewed from the direction of the motor shaft M0. In addition, Figure 13 (C) of Figure 13 is a cross-sectional view taken along line a-a of (B) of. In addition, Figure 13 (D) of Figure 13 is a cross-sectional view taken by cutting along the plane b shown in (C) of the plane orthogonal to the motor shaft M0.

[0143] As Figure 13 shown in (A) of, the yoke portion 53 has a groove 59 on its outer peripheral surface. And the notch portion 58 of the coil unit 20 (the tooth portion 54 included therein) is engaged with the groove 59 from above the motor shaft M0 and pressed in the direction of the motor shaft M0.

[0144] Thereby, the tooth portion 54 of the coil unit 20 is as Figure 13is engaged with the yoke portion 53 as shown by the dashed line in (B) thereof, and the coil unit 20 is fixed to the yoke portion 53.

[0145] In this example, the second engaging portion 36 is provided only above the flange portion 33 in the direction of the motor shaft M0 ( Figure 12 of (F)), and does not interfere with the operation of inserting the notch portion 58 into the groove 59. And when the coil unit 20 is fixed to the yoke portion 53, the second arm 361 of the second engaging portion 36 crosses the yoke portion 53, and the engaging surface 364 of the claw 362 is engaged with the recess 533 provided on the inner peripheral surface (inner peripheral surface 53I) of the yoke portion 53. That is, in this case, after the coil 10 is engaged with the first engaging portion 35, the core 51 is engaged with the second engaging portion 36. Thus, the coil 10, the insulating member 30, and the core 51 are integrally engaged to assemble the stator 50.

[0146] Similar to the first embodiment, the first engaging portion 35 of the insulating member 30 appropriately selects its size and shape such that the claw 352 is engaged with the inner periphery of the coil 10 and can prevent detachment. In addition, the second engaging portion 36 appropriately selects its size and shape such that the coil 10 (coil unit 20) can be prevented from detaching from the yoke portion 53 (movement in the radial direction R).

[0147] Here, although the outer-rotor type stator 50 has been described as an example, the second embodiment can also be applied to an inner-rotor type stator. In this case, on the inner peripheral surface 53I of the yoke portion 53, a plurality of grooves 59 of the yoke portion 53 are provided at a predetermined distance along the circumferential direction C. In addition, on the inner peripheral surface 53I of the yoke portion 53, a plurality of recesses 533 are provided at a predetermined distance in the circumferential direction C. And the engaging surface 364 of the claw 362 of the second engaging portion 36 is engaged with the recess 533 provided on the inner peripheral surface 53I of the yoke portion 53. It should be noted that the structure may also be such that the recess 533 is not provided on the inner peripheral surface 53I and the claw 362 is engaged with the inner peripheral surface 53I.

[0148] <Third Embodiment>

[0149] Refer to Figures 14 to 16 to describe the third embodiment. The third embodiment is another example in the case where the insulating member 30 of the present invention is applied to the stator 50 used in an outer-rotor type motor.

[0150] Figure 14 of (A) is a schematic view showing a part of the core 51, and is a plan view observed from the direction of the motor shaft M0. In this case, the core 51 has a substantially annular (non-segmented) yoke portion 53 and a plurality of tooth portions 54 protruding radially outward RO from the yoke portion 53. It is a non-segmented core 51 in which the yoke portion 53 and the plurality of tooth portions 54 are integrally provided.

[0151] Figure 14 (B) is a side view of the insulating member 30 as viewed from the circumferential direction C (the side view corresponding to Figure 6 (D)). Figure 13 (C) is a top view of the insulating member 30 as viewed from the direction of the motor shaft M0 (the top view corresponding to Figure 6 (E)).

[0152] The insulating member 30 has an insulating main body portion 31, a first engaging portion 35, and a second engaging portion 36, and is a resin molded body integrally formed by using an insulating resin material, and can insulate the core 51 from the coil 10. Except that the claw 352 of the first engaging portion 35 is located on the radially outer side RO and the claw 362 of the second engaging portion 26 is located on the radially inner side RI, it is the same as the first embodiment.

[0153] Refer to Figures 15 to 16 to describe the manufacturing method of the stator 50 in the third embodiment. Figure 15 (A) of Figure 15 (B) is a top view of the coil 10 and the insulating member 30 as viewed from the direction of the motor shaft M0. Figure 15 (C) is a side view of Figure 15 (B) as viewed from the circumferential direction C ( Figure 15 to the right of (B) of Figure 16 (A) of Figure 16 (C) of Figure 16 (E) is a top view of the coil 10 and the insulating member 30 as viewed from the direction of the motor shaft M0. Figure 16 (B) is a side view of Figure 16 (A) as viewed from the circumferential direction C ( Figure 16 to the right of (A) of Figure 16 (D) is Figure 16 a cross-sectional view taken along the c-c line of (C) of Figure 16 (E) is a cross-sectional view taken by cutting in a plane orthogonal to the motor shaft M0 ( Figure 16 the plane d shown in (D) of

[0154] First, as shown in Figure 15As shown in (A) of FIG. , a coil 10 is mounted on the outside of the sleeve portion 32. Specifically, the sleeve portion 32 is inserted through the inner circumference of the coil 10 (helical structure) from its front end side (the claw 352 side of the first engaging portion 35), and the coil 10 is pressed into the inner side in the radial direction RI from the outer side RO in the radial direction. Similar to the first embodiment, the first arm 351 of the first engaging portion 35 is gradually elastically deformed so as to face the center side of the helical axis of the coil 10. When the claw 352 protrudes from the outermost circumference area CRO of the coil 10, the elastically deformed first arm 351 is restored, and the engaging surface 354 of the claw 352 is engaged with the inner circumference of the outermost circumference area CRO of the coil 10. Thus, as shown in (B) of FIG. Figure 15 of (B), Figure 15 as shown in (C) of FIG. , the coil 10 is engaged with the first engaging portion 35.

[0155] Next, the above components are mounted on the tooth portion 54 of the core 51. Specifically, as shown in (A) of FIG. Figure 16 of (A), Figure 16 as shown in (B) of FIG. , the second engaging portion 36 of the insulating member 30 is opposed to the outer side RO in the radial direction of the tooth portion 54, the tooth portion 54 is inserted into the sleeve portion 32, and is pressed in the radial direction R. Thus, as shown in (C) of FIG. Figure 16 of (C), Figure 16 as shown in (D) of FIG. , the tooth portion 54 is inserted through the inside of the sleeve portion 32.

[0156] At this time, the inclined surfaces 363 of the second arm claws 362 are respectively in contact with the upper and lower surfaces of the core 51 in the direction of the motor shaft M0, and the second arm 361 is gradually elastically deformed so that the two claws 362 are separated in the direction of the motor shaft M0. When the claws 362 protrude from the yoke portion 53, the elastically deformed second arm 361 is restored, and the engaging surfaces 364 of the claws 362 are engaged with the concave portions 533 of the inner circumferential surface 53I of the yoke portion 53. Thus, the coil 10, the insulating member 30 and the core member 52 are integrally engaged ( Figure 16 as shown in (D) of FIG. . It should be noted that in this case, the structure may be such that the concave portions 533 are not provided on the inner circumferential surface 53I of the yoke portion 53 and the claws 362 are engaged with the inner circumferential surface 53I.

[0157] That is, in this case, after the coil 10 is engaged with the first engaging portion 35, the core 51 is engaged with the second engaging portion 36. Thus, the coil 10, the insulating member 30 and the core 51 are integrally engaged to assemble the stator 50.

[0158] The first engaging portion 35 of the insulating member 30 is sized and shaped such that the claw 352 is engaged with the inner circumference of the coil 10 and can prevent detachment, and the second engaging portion 36 is sized and shaped such that it can prevent the coil 10 from detaching from the yoke portion 53 (tooth portion 54) (movement in the radial direction R).

[0159] Here, although the stator 50 of the outer rotor type has been described as an example, the second embodiment can also be applied to a stator of the inner rotor type (a stator in which the tooth portion 54 has a core 51 that protrudes radially inward RI with the inner peripheral surface of the yoke portion 53 as the base end).

[0160] Assemble the stator 50 described in the above embodiments to form Figure 1 the motor 100 shown.

[0161] According to the present embodiment, the coil 10 can be fixed to the core 51 (yoke portion 53, tooth portion 54) without narrowing the magnetic path of the core 51, and the performance of the motor can be fully utilized.

[0162] In addition, the structure for insulating the coil 10 from the core 51 and the assembly man-hours of the stator 50 can be simplified, and the number of components can also be reduced. Therefore, the productivity of the stator 50 and even the motor 100 can be improved.

[0163] It should be noted that in the above embodiment, as the coil 10, although a spiral structure body in which a conductor is covered with an insulating resin has been described as an example, the coil 10 may also be a coil in which a spiral structure body is formed by a conductor not covered with an insulating resin and an insulating resin layer is provided to entirely cover the spiral structure body and insulate between one-week regions CR of the spiral structure body. The insulating resin layer in this case is formed, for example, by injection molding of an insulating resin.

[0164] In addition, the structures of the first engaging portion 35 and the second engaging portion 36 may be any structures that can fix the coil 10 to the core 51 without narrowing the magnetic path of the core 51, and are not limited to the above examples.

[0165] As described above, the present invention is not limited to the above embodiments and can be configured by various embodiments.

Claims

1. An insulating component, characterized in that, it can insulate the core of the stator from the coil that can be installed on the core, the insulating component has: an insulating main body portion disposed between the coil and the core; a first engaging portion that can engage with the coil; and a second engaging portion that can extend or protrude from the insulating main body portion in the radial direction of the stator to engage with the core.

2. An insulating component, characterized in that, it can insulate the core of the stator from the coil that can be installed on the core, the insulating component has: an insulating main body portion disposed between the coil and the core; a first engaging portion that can engage with the coil; and a second engaging portion that can engage with the outer peripheral or inner peripheral surface of the substantially annular yoke portion constituting the core.

3. The insulating component according to claim 1 or 2, characterized in that, the first engaging portion and the insulating main body portion are integrally formed of a resin material.

4. The insulating component according to claim 1 or 2, characterized in that, the second engaging portion and the insulating main body portion are integrally formed of a resin material.

5. The insulating component according to claim 1 or 2, characterized in that, the insulating main body portion has a sleeve portion disposed outside the tooth portion of the core and a flange portion provided around an opening on one side of the sleeve portion, the first engaging portion includes a claw provided at a part of the opening on the other side of the sleeve portion and capable of engaging with the inner periphery of the coil, the second engaging portion includes an arm portion extending or protruding in a direction away from the first engaging portion and a claw provided at the front end of the arm portion and capable of engaging with the core.

6. The insulating component according to claim 5, characterized in that, the coil is a concentrated winding coil formed by continuously overlapping a conductor around the outside of one tooth portion multiple times to form a spiral structure.

7. A coil unit, characterized in that, the following components are integrally engaged: the insulating component according to claim 1 or claim 2; a core component that constitutes the core; and the coil.

8. A stator, characterized in that, it is a stator formed by sandwiching the insulating component according to claim 1 or claim 2 between the coil and the core.

9. A motor, characterized in that, it has the stator according to claim 8.

10. A method for manufacturing a stator, characterized in that, the stator uses the insulating component according to claim 1 or claim 2, after engaging the coil with the first engaging portion, the core is engaged with the second engaging portion.

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