Rotary electric machine and method for manufacturing rotary electric machine

Abstract

To provide a rotary electric machine capable of reducing a work burden when fixing a coil part to a housing, and a method of manufacturing the rotary electric machine.SOLUTION: The motor device 60 has a stator 200. The stator 200 includes a coil piece 210, a support plate 281, and a plate bonding portion 251. A plurality of coil pieces 210 are arranged in the circumferential direction CD. The support plate 281 overlaps the coil piece 210 from the one side in the axial direction AD. The plate bonding portion 251 is provided between the support plate 281 and the coil piece 210, and bonds the support plate 281 and the coil piece 210 to each other. The support plate 281 is provided with a piece hole 282. The coil piece 210 enters the piece hole 282. The plate bonding portion 251 is exposed in the axial direction AD through the piece hole 282.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The disclosure in this specification relates to a rotating electric machine and a method for manufacturing a rotating electric machine. [Background technology]

[0002] Patent Document 1 describes an axial gap motor. In this motor, a rotor and a stator are aligned in the axial direction. The stator and rotor are housed in a housing. The stator has a coil portion and a molded resin. A plurality of coil portions are aligned in the circumferential direction. The molded resin is molded to integrate the plurality of coil portions. The plurality of coil portions are fixed to the housing via the molded resin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-2914 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned Patent Document 1, the molded resin integrates the multiple coils, which is likely to increase the amount of work required by the worker when molding the molded resin, and there is a concern that this will increase the workload when fixing the coils to the housing.

[0005] An object of the present disclosure is to provide a rotating electric machine and a method for manufacturing the rotating electric machine that can reduce the workload when fixing a coil portion to a housing. [Means for solving the problem]

[0006] The multiple aspects disclosed in this specification employ different technical means to achieve their respective objectives. Furthermore, the reference symbols in parentheses in the claims and this section are merely examples showing the correspondence between specific means described in the embodiments below as one aspect, and do not limit the technical scope.

[0007] In order to achieve the above object, the disclosed embodiment comprises: A rotating electric machine (60) driven by a supply of electric power, a stator (200) having a coil piece (210) formed including a current-carrying coil portion (211); a rotor (300) that rotates around a rotation axis (Cm) and is arranged on the stator in an axial direction (AD) along which the rotation axis extends; a housing (70) containing a stator and a rotor; a support plate portion (281) fixed to the housing, extending in a plate shape in a direction perpendicular to the axial direction, and supporting the coil pieces in a state of being overlapped with the coil pieces from the axial direction; an adhesive portion (251) provided between the support plate portion and the coil piece and adhesively bonding the support plate portion and the coil piece; a plate penetration portion (282, 430) that penetrates the support plate portion in the axial direction so that the adhesive portion is exposed in the axial direction; It is a rotating electric machine equipped with the above.

[0008] According to the rotating electric machine described above, the plate penetration portion penetrates the support plate portion in the axial direction so that the adhesive portion is exposed in the axial direction. With this configuration, during the manufacturing process of the rotating electric machine, an operator can overlap the support plate portion on the coil pieces, and then form the adhesive portion with the molten material by flowing molten material through the plate penetration portion between the support plate portion and the coil pieces. This reduces the workload when fixing the coil pieces to the housing using the support plate portion and the adhesive portion. In other words, the workload when fixing the coil portion to the housing can be reduced.

[0009] The disclosed aspects include: a stator (200) having a coil piece (210) formed including a current-carrying coil portion (211); a rotor (300) that rotates around a rotation axis (Cm) and is arranged on the stator in an axial direction (AD) along which the rotation axis extends; a housing (70) containing a stator and a rotor; a support plate portion (281) fixed to the housing, extending in a plate shape in a direction perpendicular to the axial direction, and supporting the coil pieces in a state of being overlapped with the coil pieces from the axial direction; A manufacturing method for manufacturing a rotating electric machine (60) comprising: an attachment process (P102 to P104) of attaching the coil pieces to the housing using the support plate portion; a flow-in process (P108) for flowing a molten material (405) between the support plate portion and the coil pieces through a plate-penetrating portion (282, 430) that penetrates the support plate portion in the axial direction; a solidification step (P109) of solidifying the molten material flowing between the support plate portion and the coil pieces to form adhesive joints (251) that bond the support plate portion and the coil pieces; The present invention relates to a method for manufacturing a rotating electric machine having the above-mentioned features.

[0010] According to the manufacturing method of the rotating electric machine, the molten material flowing between the support plate and the coil pieces through the plate through-holes is solidified to form adhesive portions that bond the support plate and the coil pieces together, thereby reducing the workload when fixing the coil parts to the housing, as in the rotating electric machine. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing the configuration of an eVTOL in a first embodiment. [Figure 2] FIG. 2 is a diagram showing the electrical configuration of the propulsion system. [Figure 3] FIG. 1 is a schematic perspective view of an EPU. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. 4 is a longitudinal cross-sectional view of the stator in the radial direction, showing the vicinity of a plate bonding portion. [Figure 9] FIG. 4 is a longitudinal cross-sectional view of the stator in the circumferential direction, showing the vicinity of a plate bonding portion. [Figure 10] FIG. [Figure 11] 4 is a flowchart showing the procedure of a manufacturing process for the motor device. [Figure 12] FIG. 2 is a diagram illustrating an injection device. [Figure 13] FIG. 10 is a diagram showing a state in which molten material is injected into the hole gap by an injection device. [Figure 14] FIG. 10 is a diagram showing a state in which the molten material has been solidified by the solidification device and a plate adhesive portion has been formed. [Figure 15] FIG. 10 is a plan view of the stator around the piece holes in the second embodiment. [Figure 16] FIG. 11 is a longitudinal cross-sectional view of the periphery of a plate bonding portion, obtained by cutting the stator in the circumferential direction in the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, several embodiments for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to matters described in the preceding embodiment will be assigned the same reference numerals, and duplicate descriptions may be omitted. In each embodiment, when only a part of the configuration is described, other previously described embodiments may be applied to the other parts of the configuration. In addition to combinations of parts that are specifically specified as being combinable in each embodiment, it is also possible to partially combine embodiments even if not specified, as long as there is no particular problem with the combination.

[0013] First Embodiment The propulsion system 30 shown in FIG. 1 is mounted on the eVTOL 10. The eVTOL 10 is an electric vertical take-off and landing aircraft. An electric vertical take-off and landing aircraft is an electric vertical take-off and landing aircraft that is capable of vertical take-off and landing. eVTOL is an abbreviation for electric Vertical Take-Off and Landing aircraft. The eVTOL 10 is an electric air vehicle that flies in the atmosphere, and is sometimes referred to as an electric air vehicle. The eVTOL 10 is also an electric aircraft, and is sometimes referred to as an electric aircraft. The eVTOL 10 is a manned air vehicle that carries a crew member. The crew member of the eVTOL 10 includes a pilot who operates or drives the aircraft. The propulsion system 30 is a system that drives the eVTOL 10 to fly. The propulsion system 30 is sometimes referred to as a flight system.

[0014] The eVTOL 10 has an airframe 11 and a propeller 20. The airframe 11 has an airframe main body 12 and wings 13. The airframe main body 12 is the fuselage of the airframe 11 and has a shape that extends, for example, in the front-to-rear direction. The wings 13 extend from the airframe main body 12 and multiple wings 13 are provided on the airframe main body 12. The wings 13 are fixed wings. The multiple wings 13 include main wings, a tail, and the like.

[0015] The eVTOL 10 has a cabin. The cabin is provided inside the eVTOL 10. For example, the cabin is the internal space of the aircraft body 12, and is formed by the aircraft body 12. The cabin can be a crew cabin 14 or a cargo bay. The crew cabin 14 can be a passenger cabin or a pilot cabin. The crew cabin 14 is provided with seats for crew members to sit in. The crew cabin 14 does not have to have crew members on board, and can instead house cargo.

[0016] A plurality of propellers 20 are provided on the airframe 11. The eVTOL 10 is a multicopter having at least three propellers 20. For example, at least four propellers 20 are provided on the airframe 11. The propellers 20 are provided on each of the airframe body 12 and the wings 13. The propellers 20 rotate around a propeller axis. The propeller axis is, for example, the center line of the propeller 20. The propellers 20 can generate thrust and lift for the eVTOL 10. The propellers 20 are also sometimes referred to as rotors or rotating blades.

[0017] The propeller 20 has blades 21 and a boss 22. A plurality of the blades 21 are arranged in the circumferential direction of the propeller axis. The boss 22 connects the plurality of blades 21. The blades 21 extend from the boss 22 in the radial direction of the propeller axis. The propeller 20 has a propeller shaft (not shown). The propeller shaft is the rotation axis of the propeller 20 and extends from the boss 22 along the propeller axis.

[0018] The eVTOL 10 is a tilt rotor aircraft. In the eVTOL 10, the tilt angle of the propeller 20 is adjustable. Note that the eVTOL 10 does not have to be a tilt rotor aircraft. For example, the eVTOL 10 may have a propeller 20 for lift and a propeller 20 for cruising.

[0019] The eVTOL 10 has a battery 31, a distributor 32, a flight control device 40, and an EPU 50. The battery 31, the distributor 32, the flight control device 40, and the EPU 50 are included in the propulsion system 30. The battery 31 is connected to the multiple EPUs 50 so that electricity can be conducted thereto. The battery 31 is a power supply unit that supplies power to the EPUs 50, and corresponds to a power supply unit. The battery 31 is a DC voltage source that applies a DC voltage to the EPU 50. The battery 31 has a chargeable and dischargeable secondary battery. The battery 31 also supplies power to the flight control device 40. Note that a fuel cell, a generator, or the like may be used as the power supply unit in addition to or instead of the battery 31.

[0020] The distributor 32 is electrically connected to the battery 31 and the plurality of EPUs 50. The distributor 32 distributes the power from the battery 31 to the plurality of EPUs 50. The power distributed by the distributor 32 to the EPUs 50 is drive power for driving the EPUs 50.

[0021] The flight control device 40 controls the propulsion system 30. The flight control device 40 performs flight control for flying the eVTOL 10. The flight control device 40 is communicatively connected to multiple EPUs 50. The flight control device 40 controls the multiple EPUs 50 individually. The flight control device 40 controls the EPUs 50 via a control circuit 160, which will be described later. The flight control device 40 controls the control circuit 160.

[0022] The EPU 50 is a device that drives the propeller 20 to rotate, and corresponds to a drive device. EPU is an abbreviation for Electric Propulsion Unit. The EPU 50 is sometimes called an electric drive device or an electric drive system. An EPU 50 is provided individually for each of the multiple propellers 20. The EPUs 50 are arranged on the propellers 20 along the propeller axis. All of the multiple EPUs 50 are fixed to the airframe 11. The EPUs 50 support the propellers 20 so that they can rotate. The EPUs 50 are connected to the propellers 20. The propellers 20 are fixed to the airframe 11 via the EPUs 50. When the tilt angle of the propellers 20 is changed, the angle of the EPUs 50 is also changed.

[0023] The eVTOL10 has a propulsion device. The propulsion device is a device for propelling the eVTOL10. The eVTOL10 is capable of flight such as lifting due to propulsion by the propulsion device. The propulsion device has a propeller 20 and an EPU50. In the propulsion device, the propeller 20 rotates as the EPU50 is driven. The propeller 20 corresponds to a rotating body. The eVTOL10 flies due to the rotation of the propeller 20. In other words, the eVTOL10 moves due to the rotation of the propeller 20. The eVTOL10 corresponds to a moving body.

[0024] As shown in Figures 1 and 2, the EPU 50 has a motor device 60 and an inverter device 80. The motor device 60 has a motor 61. The motor device 60 corresponds to a rotating electric machine. The inverter device 80 has an inverter 81. The motor 61 is electrically connected to the battery 31 via the inverter 81. The motor 61 is driven in response to power supplied from the battery 31 via the inverter 81.

[0025] The motor 61 is a multi-phase AC motor. The motor 61 is, for example, a three-phase AC motor and has U, V, and W phases. The motor 61 is a driving source for moving the moving body and functions as an electric motor. For example, a brushless motor is used as the motor 61. The motor 61 functions as a generator during regeneration. The motor 61 has multi-phase coils 64. The coils 64 are windings and form an armature. The motor 61 is driven by energizing the coils 64. The coils 64 are provided for the U, V, and W phases, respectively. In the motor 61, the multi-phase coils 64 are connected to each other at a neutral point 65.

[0026] In FIG. 2, the inverter 81 drives the motor 61 by converting the power supplied to the motor 61. The inverter 81 converts the power supplied to the motor 61 from direct current to alternating current. The inverter 81 is a power conversion unit that converts power. The inverter 81 is a multi-phase power conversion unit that performs power conversion for each of the multiple phases. The inverter 81 is, for example, a three-phase inverter that performs power conversion for each of the U phase, V phase, and W phase. The inverter device 80 is sometimes referred to as a power conversion device.

[0027] The inverter device 80 has a P line 141 and an N line 142. The P line 141 and the N line 142 electrically connect the battery 31 and the inverter 81. The P line 141 is electrically connected to the positive electrode of the battery 31. The N line 142 is electrically connected to the negative electrode of the battery 31. In the battery 31, the positive electrode is the high-potential electrode, and the negative electrode is the low-potential electrode. The P line 141 and the N line 142 are power lines for supplying electric power. The P line 141 is a high-potential power line and may be referred to as a high-potential line. The N line 142 is a low-potential power line and may be referred to as a low-potential line.

[0028] The EPU 50 has an output line 143. The output line 143 is a power line for supplying power to the motor 61. The output line 143 electrically connects the motor 61 and the inverter 81. The output line 143 is laid across the motor device 60 and the inverter device 80.

[0029] The inverter device 80 has a smoothing capacitor 145. The smoothing capacitor 145 is a capacitor that smoothes the DC voltage supplied from the battery 31. The smoothing capacitor 145 is connected to the P line 141 and the N line 142 between the battery 31 and the inverter 81. The smoothing capacitor 145 is connected in parallel to the inverter 81.

[0030] The inverter 81 is a power conversion circuit, for example, a DC-AC conversion circuit. The inverter 81 has upper and lower arm circuits 85 for a plurality of phases. For example, the inverter 81 has an upper and lower arm circuit 85 for each of the U phase, V phase, and W phase. The upper and lower arm circuit 85 has an upper arm 85a and a lower arm 85b. The upper arm 85a and the lower arm 85b are connected in series to the battery 31. The upper arm 85a is connected to the P line 141, and the lower arm 85b is connected to the N line 142.

[0031] The output line 143 is connected to the upper and lower arm circuits 85 for each of the multiple phases. The output line 143 is connected between the upper arm 85a and the lower arm 85b. The output line 143 connects the upper and lower arm circuits 85 and the coil 64 for each of the multiple phases. The output line 143 is connected to the side of the coil 64 opposite to the neutral point 65.

[0032] The upper arm 85a and the lower arm 85b have an arm switch 86 and a diode 87. The arm switch 86 is a transistor such as a MOSFET. MOSFET is an abbreviation for Metal-Oxide-Semiconductor Field-Effect Transistor. The arm switch 86 is a switching element that can convert power by switching. The switching element may be a semiconductor element such as a power element. The arm switch 86 is a conversion switch for converting power.

[0033] The EPU 50 has a control circuit 160. The control circuit 160 is included in the inverter device 80. The control circuit 160 controls the driving of the inverter 81. The control circuit 160 controls the driving of the motor 61 via the inverter 81. The control circuit 160 is sometimes referred to as a motor control unit. In FIG. 2, the control circuit 160 is illustrated as CD.

[0034] As shown in FIG. 3, in the EPU 50, the motor device 60 and the inverter device 80 are arranged in the axial direction AD along the motor axis Cm. The motor device 60 is provided between the propeller 20 and the inverter device 80 in the axial direction AD. The motor axis Cm is the center line of the motor 61 and is a virtual line that extends linearly. The motor axis Cm corresponds to the rotation axis. The axial direction AD is the direction in which the motor axis Cm extends.

[0035] With respect to the motor axis Cm, the axial direction AD, the circumferential direction CD, and the radial direction RD are perpendicular to one another. The circumferential direction CD is the direction of rotation of the motor 61. With respect to the radial direction RD, the outer side is sometimes referred to as the radially outer side or the outer circumferential side, and the inner side is sometimes referred to as the radially inner side or the inner circumferential side. The axial direction AD is sometimes referred to as the axial direction.

[0036] The EPU 50 has a motor housing 70 and an inverter housing 90. The motor housing 70 is included in the motor device 60. The motor housing 70 houses a motor 61. The inverter housing 90 is included in the inverter device 80. The inverter housing 90 houses an inverter 81. The motor housing 70 and the inverter housing 90 are connected to each other.

[0037] As shown in FIG. 4, the motor housing 70 has a motor outer peripheral wall 71, a rear frame 370, and a drive frame 390. The motor outer peripheral wall 71 and the frames 370, 390 are made of a metal material or the like and have thermal conductivity. The motor outer peripheral wall 71 is cylindrical and extends in the axial direction AD. The frames 370, 390 are plate-shaped and extend in a direction perpendicular to the axial direction AD. The rear frame 370 and the drive frame 390 are arranged in the axial direction AD via the motor outer peripheral wall 71. The frames 370, 390 are fixed to the motor outer peripheral wall 71 with fasteners such as bolts. Note that FIG. 4 shows a longitudinal cross section of the motor device 60 taken along the motor axis Cm.

[0038] The motor housing 70 has a housing outer peripheral surface 70a and a housing inner peripheral surface 70b. The housing outer peripheral surface 70a is the outer peripheral surface of the motor housing 70 and is included in the outer surface of the motor housing 70. The housing inner peripheral surface 70b is the inner peripheral surface of the motor housing 70 and is included in the inner surface of the motor housing 70. The housing outer peripheral surface 70a and the housing inner peripheral surface 70b are formed by the motor outer peripheral wall 71.

[0039] The rear frame 370 covers the inner space of the motor outer peripheral wall 71 from the inverter device 80 side. The rear frame 370 is provided on the opposite side of the motor outer peripheral wall 71 from the propeller 20. The drive frame 390 covers the inner space of the motor outer peripheral wall 71 from the opposite side of the inverter device 80. The drive frame 390 is provided on the propeller 20 side of the motor outer peripheral wall 71.

[0040] The motor housing 70 has motor fins 72. The motor fins 72 are provided on the outer surface of the motor housing 70. For example, the motor fins 72 are provided on the housing outer peripheral surface 70a. The motor fins 72 protrude from the motor outer peripheral wall 71 toward the outer periphery. The motor fins 72 extend in a direction perpendicular to the circumferential direction CD. Multiple motor fins 72 are arranged in the circumferential direction CD. The motor fins 72 are heat dissipation fins that dissipate heat from the motor device 60 to the outside.

[0041] The motor 61 has a stator 200, a rotor 300, and a shaft 340. The stator 200 is a stator. The stator 200 has a coil 64. The rotor 300 is a rotor. The rotor 300 rotates relative to the stator 200. The rotor 300 rotates around a motor axis Cm. The motor axis Cm is the center line of the rotor 300. The stator 200 extends annularly in the circumferential direction CD. The motor axis Cm coincides with the center line of the stator 200.

[0042] The motor device 60 is an axial gap type rotating electric machine. The motor 61 is an axial gap type motor. In the motor 61, a stator 200 and a rotor 300 are arranged in the axial direction AD with an axial gap 305 interposed therebetween. The motor device 60 is a double-rotor type rotating electric machine. The motor 61 is a double-rotor type motor. The motor 61 has two rotors, a first rotor 300A and a second rotor 300B. The first rotor 300A and the second rotor 300B are arranged in the axial direction AD with the stator 200 interposed therebetween. The motor 61 is sometimes referred to as a double axial motor.

[0043] The rotor 300 has magnet sections 310 and magnet holders 320. A plurality of magnet sections 310 are arranged in the circumferential direction CD in each rotor 300. The magnet sections 310 include permanent magnets and form a field magnet. In the rotor 300, the magnet sections 310 generate magnetic flux. The magnet sections 310 of the first rotor 300A and the magnet sections 310 of the second rotor 300B are arranged in the axial direction AD via the stator 200. The magnet holders 320 support the magnet sections 310. The magnet holders 320 form the outer and inner peripheral ends of the rotor 300.

[0044] The shaft 340 supports the rotor 300. The shaft 340 rotates together with the rotor 300 about the motor axis Cm. The center line of the shaft 340 coincides with the motor axis Cm. The shaft 340 connects the rotor 300 and the propeller 20.

[0045] The shaft 340 is rotatably supported by a rear bearing 350 and a drive bearing 360. The bearings 350, 360 are included in the motor device 60. The bearings 350, 360 extend annularly in the circumferential direction CD. The rear bearing 350 and the drive bearing 360 are aligned in the axial direction AD via the rotor 300. The bearings 350, 360 are fixed to the motor housing 70. The rear bearing 350 is fixed to the rear frame 370. The drive bearing 360 is fixed to the drive frame 390.

[0046] The motor housing 70 accommodates the stator 200 and the rotor 300. In the motor housing 70, a motor outer peripheral wall 71 covers the stator 200 and the rotor 300 from the outer periphery. The motor housing 70 corresponds to an electric machine housing. The motor outer peripheral wall 71 corresponds to an electric machine outer peripheral wall.

[0047] The stator 200 has a coil portion 211 and a core 231. The coil portion 211 is formed of an electric wire such as a rectangular wire, and is capable of carrying electricity. The coil portion 211 is wound around the core 231. The coil portion 211 is formed in a cylindrical shape as a whole, and extends in the axial direction AD. The core 231 is an iron core, and also extends in the axial direction AD. A plurality of the coil portions 211 and the cores 231 are arranged in the circumferential direction CD along the housing inner circumferential surface 70b. In the stator 200, a coil 64 is formed by a plurality of the coil portions 211.

[0048] The stator 200 has a coil piece 210. The coil piece 210 is formed to include a coil portion 211 and a core 231. The coil piece 210 is a component in which the coil portion 211 and the core 231 are integrated. The coil piece 210 is sometimes referred to as a coil module or a core piece. In the stator 200, a plurality of the coil pieces 210 are arranged in the circumferential direction CD, and thus a plurality of the coil portions 211 are arranged in the circumferential direction CD.

[0049] As shown in Figures 5 and 6, the stator 200 has a coil piece group 215. The coil piece group 215 has a plurality of coil portions 211. The coil piece group 215 includes all of the coil portions 211 that the stator 200 has. The coil piece group 215 is an assembly of a plurality of coil portions 211. The coil piece group 215 extends annularly in the circumferential direction CD along the housing inner circumferential surface 70b.

[0050] In the coil piece group 215, a group outer peripheral edge 215a and a group inner peripheral edge 215b extend annularly in the circumferential direction CD. The group outer peripheral edge 215a is the outer peripheral edge of the coil piece group 215 and extends annularly in the circumferential direction CD. The group outer peripheral edge 215a is the outer peripheral edge of the coil piece group 215. It extends annularly in the circumferential direction CD. The group outer peripheral edge 215a is the outer peripheral edge of the area in which the multiple coil pieces 210 are accommodated. The group outer peripheral edge 215a includes the outermost surfaces of the coil pieces 210 in the radial direction RD. The group outer peripheral edge 215a extends along an imaginary line connecting the radially outer ends of each of two coil pieces 210 adjacent in the circumferential direction CD. The group inner peripheral edge 215b is the inner peripheral edge of the coil piece group 215 and extends annularly in the circumferential direction CD. The group inner peripheral edge 215b is the inner peripheral edge of the area in which the multiple coil pieces 210 are accommodated. The inner-group peripheral edge 215b extends along an imaginary line connecting the radially inner ends of two coil pieces 210 adjacent to each other in the circumferential direction CD.

[0051] As shown in Figures 4 and 5, the motor device 60 has a coil piece support portion 280. The coil piece support portion 280 supports the coil piece 210. The coil piece support portion 280 supports the coil portion 211 by supporting the coil piece 210. The coil piece support portion 280 corresponds to a coil support portion. The coil piece support portion 280 is fixed to the motor housing 70. For example, the coil piece support portion 280 is fixed to the motor outer peripheral wall 71. The coil piece 210 is fixed to the motor outer peripheral wall 71 via the coil piece support portion 280.

[0052] The coil piece support portion 280 has a support plate 281 and a support pole 291. The support plate 281 is made of a resin material or the like and has electrical insulation properties. For example, the support plate 281 is made of GFRP or AFRP. GFRP is glass fiber reinforced plastic. AFRP is aramid fiber reinforced plastic.

[0053] As shown in FIGS. 4, 5, and 7, the support plate 281 is formed in a plate shape and extends in a direction perpendicular to the axial direction AD. The support plate 281 is overlapped on the coil piece 210 from the axial direction AD. The support plate 281 is hooked on the coil piece 210 from the axial direction AD. A pair of support plates 281 are arranged side by side with the coil piece 210 interposed therebetween. The pair of support plates 281 is a first support plate 281A and a second support plate 281B. The first support plate 281A is provided on the first rotor 300A side. The second support plate 281B is provided on the second rotor 300B side. The first support plate 281A and the second support plate 281B support the coil piece 210 with the coil piece 210 sandwiched between them in the axial direction AD. The support plate 281 corresponds to a support plate portion.

[0054] The support pole 291 shown in FIG. 4 extends in a columnar shape in the axial direction AD. The support pole 291 is provided radially inward of the coil piece 210. For example, the support pole 291 is located at a distance radially inward from the coil piece 210. In the radial direction RD, the coil piece 210 is located between the support pole 291 and the motor outer peripheral wall 71. A plurality of support poles 291 are arranged in the circumferential direction CD. The support pole 291 is formed from a resin material or the like and has electrical insulation properties. Note that the support pole 291 is not shown in FIG. 5.

[0055] The first support plate 281A and the second support plate 281B are connected by the motor outer peripheral wall 71 and the support pole 291. The first support plate 281A and the second support plate 281B are fixed to the motor outer peripheral wall 71 on the outer periphery side of the coil piece 210. The first support plate 281A and the second support plate 281B are fixed to the support pole 291 on the inner periphery side of the coil piece 210.

[0056] The support pole 291 connects the first support plate 281A and the second support plate 281B. The support pole 291 corresponds to a connecting member. The support pole 291 is provided between the first support plate 281A and the second support plate 281B. The first support plate 281A and the second support plate 281B are fixed to the support pole 291 with fixing devices such as bolts.

[0057] The motor housing 70 has an inner-wall protrusion 73 as a portion where the first support plate 281A and the second support plate 281B are fixed. As shown in FIGS. 4 and 6, the inner-wall protrusion 73 is a protrusion provided on the housing inner circumferential surface 70b. The inner-wall protrusion 73 protrudes inward from the motor outer circumferential wall 71. The inner-wall protrusion 73 extends annularly in the circumferential direction CD.

[0058] The intra-wall protrusion 73 is provided between the first support plate 281A and the second support plate 281B. The first support plate 281A and the second support plate 281B are fixed to the intra-wall protrusion 73 with the intra-wall protrusion 73 sandwiched between them. The first support plate 281A is overlapped on one end surface of the intra-wall protrusion 73. The second support plate 281B is overlapped on the other end surface of the intra-wall protrusion 73. The intra-wall protrusion 73 is a receiving portion that receives the support plate 281. The first support plate 281A and the second support plate 281B are fixed to the end surfaces of the intra-wall protrusion 73 with fasteners such as bolts.

[0059] As shown in Figures 5 and 7, piece holes 282 are formed in the support plate 281. The piece holes 282 penetrate the support plate 281 in the axial direction AD. The piece holes 282 correspond to plate through-holes. A plurality of the piece holes 282 are arranged in the circumferential direction CD. The piece holes 282 are provided between the motor outer peripheral wall 71 and the support pole 291 in the radial direction RD. The coil pieces 210 are fitted into the piece holes 282.

[0060] As shown in Figures 4, 8, and 9, the coil pieces 210 are exposed to the rotor 300 side through the piece holes 282. In the stator 200, at least one of the coil pieces 210 and the support plate 281 determines the thickness dimension of the axial gap 305. For example, the coil pieces 210 determine the thickness dimension of the axial gap 305. In the axial direction AD, the distance between the coil pieces 210 and the rotor 300 is not greater than the distance between the support plate 281 and the rotor 300. For example, the coil pieces 210 are in a state of protruding toward the rotor 300 side beyond the support plate 281.

[0061] As shown in Figures 8 and 9, the coil piece 210 has a piece end face 210a and a piece outer peripheral face 210b. The piece end face 210a and the piece outer peripheral face 210b are included in the outer surface of the coil piece 210. The piece end face 210a is the end face of the coil piece 210. The coil end face 236 extends in a direction perpendicular to the axial direction AD. A pair of the coil end faces 236 are arranged in the axial direction AD. One of the pair of coil end faces 236 faces the first rotor 300A, and the other faces the second rotor 300B. The coil end face 236 is provided at a position protruding from the support plate 281 on the rotor 300 side.

[0062] The piece outer peripheral surface 210b is the outer peripheral surface of the coil piece 210. The piece outer peripheral surface 210b extends in the axial direction AD so as to bridge between the pair of piece end faces 210a. The piece outer peripheral surface 210b extends in an annular shape along the outer peripheral edges of the piece end faces 210a.

[0063] In the coil piece 210, the core 231 protrudes from the coil portion 211 in the axial direction AD. The core 231 has a core body 232, a core flange 233, and a core extension portion 234. The core body 232 extends in the axial direction AD. The coil portion 211 is wound around the core body 232.

[0064] The core flange 233 is a flange provided on the outer peripheral surface of the core body 232. The core flange 233 extends from the core body 232 toward the outer peripheral side. The core flange 233 extends annularly in the circumferential direction of the core body 232. A pair of core flanges 233 are arranged side by side in the axial direction AD. A coil portion 211 is provided between the pair of core flanges 233.

[0065] The core extension portion 234 extends from the core body 232 in the axial direction AD. A pair of core extension portions 234 are arranged in the axial direction AD via the core body 232. One of the pair of core extension portions 234 extends toward the first rotor 300A, and the other extends toward the second rotor 300B. The core extension portion 234 forms the piece end surface 210a.

[0066] The core extension portion 234 has an extended outer peripheral surface 235. The extended outer peripheral surface 235 is the outer peripheral surface of the core extension portion 234. The extended outer peripheral surface 235 is included in the piece outer peripheral surface 210b. The extended outer peripheral surface 235 extends in an annular shape along the outer peripheral edge of the piece end face 210a. The extended outer peripheral surface 235 has an outer peripheral outer surface 235a, an outer peripheral inner surface 235b, and an outer peripheral opposing surface 235c. The outer peripheral outer surface 235a is the portion of the extended outer peripheral surface 235 facing outward in the radial direction RD. The outer peripheral outer surface 235a faces the motor outer peripheral wall 71 side. The outer peripheral inner surface 235b is the portion of the extended outer peripheral surface 235 facing inward in the radial direction RD. The outer peripheral inner surface 235b faces the support pole 291 side. The outer peripheral facing surfaces 235c are surfaces extending in a direction perpendicular to the circumferential direction CD on the extended outer peripheral surface 235. The outer peripheral facing surfaces 235c are arranged in pair in the circumferential direction CD via an outer peripheral outer surface 235a and an outer peripheral inner surface 235b.

[0067] The coil piece 210 has a piece protective portion 241 in addition to the coil portion 211 and the core 231. The piece protective portion 241 is formed of a resin material or the like. The piece protective portion 241 protects the coil portion 211 and the core 231. The piece protective portion 241 covers at least a portion of the coil portion 211 and at least a portion of the core 231. For example, the piece protective portion 241 covers the outer circumferential surface of the coil portion 211 and the outer circumferential surface of the core flange 233. The piece protective portion 241 extends in the axial direction AD so as to span the pair of core flanges 233 via the coil portion 211. The piece protective portion 241 extends in an annular shape along the outer circumferential edge of the core flange 233. The piece protective portion 241 forms at least a portion of the piece outer circumferential surface 210b. The piece protective portion 241 may have heat conductivity or heat dissipation properties.

[0068] The piece protector 241 has a protective base 242, a protective protrusion 243, and a protective spacer 244. The protective base 242 is a portion of the piece protector 241 that extends in the axial direction AD so as to span the pair of core flanges 233. The protective base 242 extends annularly along the outer peripheral edge of the piece protector 241.

[0069] The protective protrusion 243 protrudes from the protective base 242 in the axial direction AD. The protective protrusion 243 protrudes toward the piece end face 210a side further than the core flange 233 in the axial direction AD. The protective protrusion 243 is provided at a position spaced apart from the core extension portion 234 toward the outer periphery via the core flange 233. The protective protrusion 243 faces the extended outer periphery surface 235 via the core flange 233. The protective protrusion 243 is provided at a position facing the outer periphery outer surface 235a and a position facing the outer periphery facing surface 235c. A pair of protective protrusions 243 are provided in the axial direction AD via the protective base 242.

[0070] As shown in Fig. 8, the protective spacer 244 extends from the protective base 242 along the core flange 233 toward the core extension portion 234. The protective spacer 244 is provided on the opposite side of the core flange 233 from the coil portion 211 in the axial direction AD. Like the protective protrusion 243, the protective spacer 244 extends from the protective base 242 in the axial direction AD. The protective spacer 244 is provided at a position facing the outer peripheral surface 235a. A pair of protective spacers 244 are provided in the axial direction AD with the protective base 242 interposed therebetween.

[0071] As shown in FIGS. 8 and 9 , in the coil piece 210, the piece protector 241 is sandwiched between the first support plate 281A and the second support plate 281B. In the piece protector 241, the protective protrusion 243 and the protective spacer 244 are overlapped on the plate surface of the support plate 281. The protective protrusion 243 and the protective spacer 244 support the support plate 281. The protective protrusion 243 protrudes from the core flange 233 in the axial direction AD, thereby forming a plate gap 288 between the core flange 233 and the support plate 281. The plate gap 288 is provided between the protective protrusion 243 and the core extension portion 234. The protective spacer 244 is inserted between the core flange 233 and the support plate 281 so as to fill the gap between the core flange 233 and the support plate 281.

[0072] As shown in FIGS. 8 to 10 , the support plate 281 has a hole inner peripheral surface 283. The hole inner peripheral surface 283 is a forming surface that forms the piece hole 282. The hole inner peripheral surface 283 corresponds to a through-forming surface. The hole inner peripheral surface 283 faces the extended outer peripheral surface 235 of the core extension portion 234. The extended outer peripheral surface 235 extends closer to the rotor 300 than the hole inner peripheral surface 283. In other words, the coil piece 210 protrudes in the axial direction AD beyond the hole inner peripheral surface 283. In the coil piece 210, the piece end surface 210a is closer to the rotor 300 than the hole inner peripheral surface 283.

[0073] The hole inner circumferential surface 283 has an inner circumferential outer surface 283a, an inner circumferential inner surface 283b, and an inner circumferential opposing surface 283c. The inner circumferential outer surface 283a faces the outer circumferential outer surface 235a of the core extension portion 234. The inner circumferential inner surface 283b faces the outer circumferential inner surface 235b of the core extension portion 234. The inner circumferential opposing surface 283c faces the outer circumferential opposing surface 235c of the core extension portion 234. The inner circumferential opposing surfaces 283c are arranged in pairs in the circumferential direction CD via the piece hole 282.

[0074] A hole gap 289 is formed between the extended outer peripheral surface 235 and the hole inner peripheral surface 283. The hole gap 289 is a gap between the core extension portion 234 and the support plate 281. The hole gap 289 corresponds to an adhesive gap. A plurality of hole gaps 289 are arranged along the outer peripheral edge of the piece end face 210a. For example, the hole gap 289 is provided between the outer peripheral inner surface 235b and the inner peripheral inner surface 283b, or between the outer peripheral opposing surface 235c and the inner peripheral opposing surface 283c. A plurality of hole gaps 289 are provided between the outer peripheral inner surface 235b and the inner peripheral inner surface 283b.

[0075] The hole gap 289 is formed by recessing at least one of the extended outer peripheral surface 235 and the hole inner peripheral surface 283. For example, the hole gap 289 is formed by recessing the hole inner peripheral surface 283. A gap recess 284 is formed in the support plate 281. The gap recess 284 is a recess provided in the hole inner peripheral surface 283. The inner space of the gap recess 284 forms the hole gap 289. The gap recess 284 extends in a groove-like shape in the axial direction AD and is open to both one side and the other side in the axial direction AD. The gap recess 284 forms the hole gap 289 with the extended outer peripheral surface 235, which is part of the piece outer peripheral surface 210b.

[0076] The gap recesses 284 are provided on each of the inner circumferential inner surface 283b and the inner circumferential facing surface 283c. On the inner circumferential inner surface 283b, the gap recesses 284 are formed in a horizontally elongated shape so as to extend in the circumferential direction CD. On the inner circumferential facing surface 283c, the gap recesses 284 are formed in a horizontally elongated shape so as to extend in the radial direction RD. On the inner circumferential facing surface 283c, a plurality of the gap recesses 284 are arranged in the radial direction RD.

[0077] The support plate 281 has a gap protrusion 285. The gap protrusion 285 is a portion of the support plate 281 that is arranged alongside the gap recess 284. The portion of the support plate 281 that remains after the gap recess 284 is formed is the gap protrusion 285. For example, the gap protrusion 285 is provided between two adjacent gap recesses 284. The gap protrusion 285 protrudes from the bottom surface of the gap recess 284 toward the core extension portion 234. The tip surface of the gap protrusion 285 comes into contact with the extension outer peripheral surface 235, thereby restricting movement of the support plate 281 relative to the coil piece 210 in a direction perpendicular to the axial direction AD. In other words, the gap protrusion 285 restricts displacement of the support plate 281 relative to the coil piece 210. The gap protrusion 285 corresponds to a displacement restriction portion.

[0078] The gap protrusions 285 are provided on each of the inner circumferential inner surface 283b and the inner circumferential opposing surface 283c. On the inner circumferential inner surface 283b, the gap protrusions 285 come into contact with the outer circumferential inner surface 235b, thereby forming a hole gap 289. On the inner circumferential inner surface 283b, a plurality of the gap protrusions 285 are arranged in the circumferential direction CD with the gap recessed portions 284 interposed therebetween. On the inner circumferential opposing surface 283c, the gap protrusions 285 come into contact with the outer circumferential opposing surface 235c, thereby forming a hole gap 289. On the inner circumferential opposing surface 283c, a plurality of the gap protrusions 285 are arranged in the radial direction RD with the gap recessed portions 284 interposed therebetween.

[0079] For example, on the inner circumferential inner surface 283b, the length dimension of the gap recessed portion 284 in the circumferential direction CD is greater than the length dimension of the gap protruding portion 285. Also, on the inner circumferential opposing surface 283c, the length dimension of the gap recessed portion 284 in the radial direction RD is greater than the length dimension of the gap protruding portion 285.

[0080] The stator 200 has a plate bonding portion 251. The plate bonding portion 251 is formed from a resin material or the like. The plate bonding portion 251 has adhesiveness or stickiness. The plate bonding portion 251 is provided between the support plate 281 and the coil piece 210. The plate bonding portion 251 bonds the support plate 281 and the coil piece 210. The plate bonding portion 251 corresponds to an adhesive portion. Note that the plate bonding portion 251 may have thermal conductivity or heat dissipation properties.

[0081] The plate adhesive portion 251 is provided in the gap between the support plate 281 and the coil piece 210. The plate adhesive portion 251 has an adhesive base portion 252 and an adhesive exposed portion 253. The adhesive base portion 252 is provided in the plate gap 288. The adhesive base portion 252 adheres the support plate 281 to the core flange 233 and the piece protector portion 241 in the plate gap 288. The adhesive base portion 252 extends along the plate surface of the support plate 281. The adhesive base portion 252 extends in a direction perpendicular to the axial direction AD so as to bridge between the core extension portion 234 and the protective protrusion 243. The protective protrusion 243 extends along the outer peripheral edge of the adhesive base portion 252. The protective protrusion 243 covers the outer peripheral edge of the adhesive base portion 252 from the outer peripheral side of the adhesive base portion 252. The protective protrusion 243 corresponds to an adhesive covering portion.

[0082] The adhesive exposed portion 253 is provided in the hole gap 289. The adhesive exposed portion 253 extends from the adhesive base portion 252 in the axial direction AD. The adhesive exposed portion 253 is exposed from the hole gap 289 toward the rotor 300. As long as the adhesive exposed portion 253 is exposed toward the rotor 300, it may be provided in only a portion of the hole gap 289, or may protrude from the hole gap 289 toward the rotor 300.

[0083] As shown in FIG. 10 , the plate adhesive portion 251 extends along the outer circumferential edge of the piece end surface 210a. The plate adhesive portion 251 has an inner circumferential adhesive portion 256 and an opposing adhesive portion 257. Both the inner circumferential adhesive portion 256 and the opposing adhesive portion 257 have an adhesive base portion 252 and an exposed adhesive portion 253. The inner circumferential adhesive portion 256 is a portion of the plate adhesive portion 251 that extends along the outer circumferential inner surface 235b. The inner circumferential adhesive portion 256 extends in the circumferential direction CD so as to span between the pair of outer circumferential facing surfaces 235c. The opposing adhesive portion 257 is a portion of the plate adhesive portion 251 that extends along the outer circumferential facing surface 235c. The inner circumferential adhesive portion 256 extends in the radial direction RD so as to span between the outer circumferential outer surface 235a and the outer circumferential inner surface 235b.

[0084] A relief recess 286 is formed in the support plate 281. The relief recess 286 is a recess provided in the hole inner circumferential surface 283. The relief recess 286 extends in a groove-like shape in the axial direction AD and is open to both one side and the other side in the axial direction AD. The relief recess 286 is provided at a position facing an outer corner of the coil piece 210. The relief recess 286 is provided at an inner corner of the piece hole 282. For example, the relief recess 286 is provided so as to bridge between the inner circumferential outer surface 283a and the inner circumferential facing surface 283c at an inner corner where the inner circumferential outer surface 283a and the inner circumferential facing surface 283c intersect. The relief recess 286 is also provided so as to bridge between the inner circumferential inner surface 283b and the inner circumferential facing surface 283c at an inner corner where the inner circumferential inner surface 283b and the inner circumferential facing surface 283c intersect.

[0085] For example, unlike this embodiment, in a configuration in which the support plate 281 does not have the relief recess 286, there is a concern that the protruding corners of the coil pieces 210 may come into contact with the recessed corners of the support plate 281 when, for example, attaching the support plate 281 to the coil pieces 210. In contrast, in this embodiment, the relief recess 286 is provided in the support plate 281, so that the protruding corners of the coil pieces 210 do not come into contact with the recessed corners of the support plate 281 in the piece holes 282. Therefore, the relief recess 286 prevents the protruding corners of the coil pieces 210 from coming into contact with the recessed corners of the support plate 281, which would cause deformation of the coil pieces 210 and the support plate 281.

[0086] Next, a description will be given of a method for manufacturing the motor device 60. The manufacturing process for manufacturing the motor device 60 will be described with reference to the flowchart in Fig. 11. The manufacturing method for the motor device 60 corresponds to the manufacturing method for a rotating electric machine.

[0087] 11, a worker performs manufacturing steps for manufacturing stator 200. In step P101, the worker makes preparations for manufacturing stator 200. The worker prepares parts and members for manufacturing stator 200. For example, the worker prepares motor housing 70, coil pieces 210, support plates 281A and 281B, support pole 291, etc. Step P101 is sometimes referred to as a preparation step.

[0088] The worker also prepares molten material 405, workbench 410, injection device 411, pressure jig 420, solidification device 425, etc. The molten material 405 is a material for forming plate adhesive portion 251. The molten material 405 is a material such as a resin material in a molten state. The molten material 405 is formed to contain a curable molten resin. For example, the molten material 405 is formed to contain a thermosetting molten resin that hardens when heated. Note that the molten material 405 may be formed to contain a UV-curable or room-temperature-curable molten resin.

[0089] In steps P102 to P104, the worker attaches coil piece 210 to motor housing 70 using support plates 281A and 281B. The worker fixes first support plate 281A and second support plate 281B to motor housing 70 so that coil piece 210 is sandwiched between first support plate 281A and second support plate 281B. The worker attaches coil piece 210 to support plate 281 so that coil piece 210 is exposed in axial direction AD through piece hole 282 and so that hole gap 289 is formed between coil piece 210 and support plate 281 at piece hole 282. Steps P102 to P104 correspond to an attachment step.

[0090] For example, in step P102, the worker fixes the first support plate 281A to the motor outer peripheral wall 71 using bolts or the like. In step P103, the worker arranges the multiple coil pieces 210 along the motor outer peripheral wall 71 and the first support plate 281A. In step P104, the worker fixes the second support plate 281B to the motor outer peripheral wall 71 using bolts or the like. The worker also creates the coil piece support part 280 by connecting the first support plate 281A and the second support plate 281B with a support pole 291. The part manufactured in steps P102 to P104 may be referred to as a workpiece W. The workpiece W is a part in which the coil pieces 210 and the coil piece support part 280 are attached to the motor housing 70.

[0091] In steps P105 to P109, the worker performs the work of bonding coil piece 210 and support plate 281 together by plate bonding portion 251. That is, the worker performs the work of forming plate bonding portion 251. In steps P105 to P107, the worker makes preparations for the work of injecting molten material 405 into hole gap 289 using injection device 411.

[0092] The injection device 411 is a device for injecting the molten material 405 into the hole gap 289. As shown in FIG. 12 , the injection device 411 has an injection section 412, an angle adjustment section 413, a temperature adjustment section 414, an injection control section 415, and an injection operation section 416. The injection section 412 is capable of discharging the molten material 405. The injection section 412 has a discharge port for discharging the molten material 405, and the discharge port is directed toward the hole gap 289 to inject the molten material into the hole gap 289. The injection device 411 corresponds to a discharge device. The injection device 411 may also be referred to as a discharge device for discharging the molten material 405.

[0093] The angle adjustment unit 413 includes a drive source such as an electric motor. The angle adjustment unit 413 is capable of adjusting the injection angle θ (see FIG. 13). The injection angle θ is the angle at which the injection unit 412 injects the molten material 405 into the hole gap 289. For example, the injection angle θ is an inclination angle in the radial direction RD or the circumferential direction CD with respect to the motor axis Cm. The injection angle θ is also the angle at which the injection unit 412 releases the molten material 405. The injection angle θ corresponds to the release angle.

[0094] Temperature adjustment unit 414 is configured to include a heat source such as a heater. Temperature adjustment unit 414 sets the injection temperature of molten material 405. The injection temperature is the temperature of molten material 405 released from injection unit 412. Temperature adjustment unit 414 corresponds to a temperature control device. Temperature adjustment unit 414 may be provided in injection unit 412, or may be provided at a position in injection device 411 different from injection unit 412.

[0095] Pouring control unit 415 controls the driving of angle adjustment unit 413 and temperature adjustment unit 414. Pouring operation unit 416 has an operation panel that can be operated by an operator. By operating pouring operation unit 416, the operator can cause pouring device 411 to pour molten material 405 by pouring unit 412, adjust pouring angle θ, adjust the temperature of molten material 405, and the like.

[0096] Returning to FIG. 11, in step P105, the worker mounts the workpiece W on the workbench 410 (see FIG. 12). The workbench 410 is capable of rotating the workpiece W around the motor axis Cm or the like. For example, the workbench 410 is provided with a rotating table. The workpiece W becomes rotatable when placed on the rotating table. The worker mounts the pressing jig 420 on the workpiece W. The pressing jig 420 is mounted on the workpiece W so as to press the support plate 281 toward the coil piece 210.

[0097] In process P106, the operator sets a target angle for the injection angle θ. The target angle may be input by the operator to the injection operation unit 416, or may be calculated by the injection control unit 415. The operator sets the target angle so that the injection unit 412 ejects the molten material 405 toward the extended outer peripheral surface 235. In other words, the operator sets the target angle so that the ejection port of the injection unit 412 faces the extended outer peripheral surface 235, not the hole inner peripheral surface 283.

[0098] In process P107, the operator sets a target temperature for the injection temperature. The target temperature may be input by the operator to the injection operation unit 416, or may be calculated by the injection control unit 415. The operator sets the target temperature depending on the type and state of the molten material 405.

[0099] In step P108, the operator injects the molten material 405 into the hole gap 289 using the injection device 411. In this operation, the molten material 405 released from the injection section 412 flows into the hole gap 289. Step P108 corresponds to the flow-in step. The operator drives the angle adjustment section 413 via the injection control section 415 so that the injection angle θ becomes the target angle. When the injection angle θ is within the allowable range of the target angle, the molten material 405 released from the injection section 412 easily hits the extended outer peripheral surface 235. The molten material 405 released from the injection section 412 flows into the plate gap 288 through the hole gap 289.

[0100] The operator drives the temperature adjustment unit 414 via the injection control unit 415 so that the injection temperature of the molten material 405 reaches the target temperature. The operator flows the molten material 405 into the hole gap 289 while adjusting the injection temperature using the temperature adjustment unit 414. When the injection temperature is within the allowable range of the target temperature, the operator's task of injecting the molten material 405 into the gaps 288 and 289 is likely to be less difficult. For example, maintaining the injection temperature at the target temperature tends to make the viscosity of the molten material 405 uniform. In this case, the amount of molten material 405 released from the injection unit 412 tends to be stable, making it easier for the operator to inject the molten material 405 into the gaps 288 and 289. For example, when the injection temperature is not too low, the molten material 405 injected into the hole gap 289 tends to flow into the plate gap 288, and the molten material 405 tends to reach every corner of the plate gap 288. Furthermore, by ensuring that the injection temperature is not too high, the time required for the molten material 405 injected into the gaps 288 and 289 to solidify tends to be short.

[0101] After the worker has finished injecting the molten material 405 into one coil piece 210, he or she rotates the workpiece W on the turntable of the work table 410 to move the next coil piece 210 into the working range of the injection device 411. Note that if multiple coil pieces 210 fit into the working range of the injection device 411, the worker may rotate the workpiece W on the turntable after finishing injecting the molten material 405 into the multiple coil pieces 210.

[0102] The worker injects the molten material 405 into the hole gap 289 so that the molten material 405 fills at least the plate gap 288 of the plate gap 288 and the hole gap 289. As long as the plate gap 288 is filled with the molten material 405, the hole gap 289 does not necessarily have to be filled with the molten material 405. For example, the hole gap 289 may be in a state where only a small amount of the molten material 405 is present.

[0103] In the workpiece W, the support plate 281 is pressed against the protective protrusion 243 by the pressure jig 420. This prevents a gap from being formed between the support plate 281 and the protective protrusion 243. Therefore, when the molten material 405 is filled in the plate gap 288, the pressure jig 420 prevents the molten material 405 from leaking out from between the support plate 281 and the protective protrusion 243.

[0104] In step P109, the worker solidifies the molten material 405. The worker forms the plate adhesive portion 251 by solidifying the molten material 405. Step P109 corresponds to the solidification step. For example, as shown in FIG. 14 , the worker solidifies the molten material 405 using a solidification device 425. The solidification device 425 is a device for solidifying the molten material 405. For example, the solidification device 425 can harden the molten material 405 by applying heat to the molten material 405 injected into the gaps 288 and 289. If the molten material 405 has UV curing properties, the solidification device 425 may harden the molten material 405 by irradiating it with ultraviolet light. If the molten material 405 has room temperature hardening properties, the solidification device 425 may harden the molten material 405 by blowing cold air onto the molten material 405.

[0105] Plate adhesive portion 251 is brought into close contact with both coil piece 210 and support plate 281 as molten material 405 solidifies while filling gaps 288, 289. As a result, coil piece 210 and support plate 281 are bonded together by plate adhesive portion 251. After plate adhesive portion 251 has solidified, the worker removes workpiece W from work table 410 in process P110.

[0106] When the plate adhesive portion 251 is formed by solidification of the molten material 405, the adhesive exposed portion 253 may not be formed as long as the adhesive base portion 252 is formed. For example, the adhesive exposed portion 253 may be provided in a part of the hole gap 289, and the portion of the hole gap 289 where the adhesive exposed portion 253 is not provided may be a void.

[0107] According to the present embodiment described so far, the piece holes 282 penetrate the support plate 281 in the axial direction AD so that the plate adhesive portions 251 are exposed in the axial direction AD. With this configuration, during the manufacturing process of the motor 61, an operator can place the support plate 281 on top of the coil pieces 210, and then flow molten material 405 through the piece holes 282 into between the support plate 281 and the coil pieces 210. The plate adhesive portions 251 can be formed as the molten material 405 solidifies. This reduces the workload involved in fixing the coil pieces 210 to the motor housing 70 using the support plate 281 and the plate adhesive portions 251. In other words, the workload involved in fixing the coil portion 211 to the motor housing 70 can be reduced.

[0108] For example, consider a comparative example in which, unlike the present embodiment, an operator sandwiches molten material 405 between coil pieces 210 and support plate 281, and then fixes support plate 281 to motor housing 70 before solidifying molten material 405. In this comparative example, in the process of assembling support plate 281 to motor housing 70, external forces such as pressure generated during the assembling operation are likely to be repeatedly applied to molten material 405, support plate 281, and coil pieces 210. In this situation, there is a concern that air bubbles or voids may be trapped between molten material 405 and support plate 281 or coil pieces 210, or that molten material 405 may protrude from between support plate 281 and coil pieces 210.

[0109] As such, it is highly difficult for an operator to assemble support plate 281 to motor housing 70 while maintaining the initial state of molten material 405 sandwiched between coil piece 210 and support plate 281. Furthermore, if the initial state of molten material 405 is not maintained due to the formation of air bubbles or voids in molten material 405, the adhesive strength of plate adhesive joint 251 formed by solidification of molten material 405 between support plate 281 and coil piece 210 is likely to decrease. Furthermore, if an operator carefully assembles support plate 281 to motor housing 70 while maintaining the initial state of molten material 405, work efficiency is likely to decrease.

[0110] In contrast, according to the present embodiment, the worker simply injects the molten material 405 between the support plate 281 and the coil pieces 210 after assembling the support plate 281 to the motor housing 70. In this case, external force is unlikely to be applied to the molten material 405 injected between the support plate 281 and the coil pieces 210, making it easier to maintain the initial state of the molten material 405. Therefore, the molten material 405 solidifies in its initial state to form the plate bonding portions 251, thereby increasing the bonding strength of the plate bonding portions 251 between the support plate 281 and the coil pieces 210. Furthermore, since the worker does not need to be concerned about the state of the molten material 405 when assembling the support plate 281 to the motor housing 70, the efficiency of the assembly work can be improved.

[0111] According to the present embodiment, the coil piece 210 is exposed in the axial direction AD while inserted into the piece hole 282. In this configuration, the portion of the coil piece 210 inserted into the piece hole 282 is caught on the support plate 281, thereby preventing the support plate 281 from shifting in position relative to the coil piece 210 in a direction perpendicular to the axial direction AD.

[0112] Moreover, in the piece hole 282, the plate bonding portion 251 is exposed in the axial direction AD through the hole gap 289 formed between the support plate 281 and the coil piece 210. In this configuration, an operator can form the plate bonding portion 251 with the molten material 405 by pouring the molten material 405 into the hole gap 289. Therefore, the workload of forming the plate bonding portion 251 can be reduced while suppressing misalignment of the support plate 281 with respect to the coil piece 210.

[0113] According to this embodiment, in the support plate 281, a gap recess 284 provided in the hole inner peripheral surface 283 forms a hole gap 289 between the piece outer peripheral surface 210b and the hole inner peripheral surface 283. In this configuration, regardless of the positional relationship between the support plate 281 and the coil piece 210, the gap recess 284 can reliably form the hole gap 289 at the position where it is desired to flow the molten material 405.

[0114] For example, in a configuration in which the gap recess 284 is not formed on the hole inner circumferential surface 283, unlike the present embodiment, the relative position of the support plate 281 with respect to the coil piece 210 is likely to shift in the circumferential direction CD or the radial direction RD, which can easily change the position, size, and shape of the hole gap 289. For this reason, with this configuration, there is a concern that the hole gap 289 may not be formed at the position where the molten material 405 is desired to flow, or that the hole gap 289 may be formed at an unintended position.

[0115] According to this embodiment, the gap recess 284 extends along the piece outer peripheral surface 210b in a direction perpendicular to the axial direction AD. With this configuration, the position at which the molten material 405 is poured into the gap recess 284 by the injection portion 412 or the like can be moved in the circumferential direction CD or the radial direction RD along the piece outer peripheral surface 210b. Therefore, the molten material 405 can be poured into the plate gap 288 so that the molten material 405 can easily spread throughout the entire plate gap 288 and the hole gap 289.

[0116] Furthermore, when molten material 405 flows into the inside of gap recess 284, air is likely to escape to the outside from gap recess 284. Therefore, molten material 405 injected into one location in gap recess 284 is likely to spread along piece outer peripheral surface 210b. Therefore, a configuration can be realized in which molten material 405 is likely to spread over the bonding surface between support plate 281 and coil piece 210.

[0117] According to this embodiment, in the support plate 281, gap protrusions 285 provided at positions aligned with the gap recesses 284 along the piece outer peripheral surfaces 210b come into contact with the piece outer peripheral surfaces 210b, thereby restricting displacement of the support plate 281 relative to the coil pieces 210. This configuration can suppress misalignment of the support plate 281 relative to the coil pieces 210 and reduce the workload involved in forming the plate bonding portions 251. Furthermore, when attaching the support plate 281 to the coil pieces 210, the gap protrusions 285 can position the support plate 281 relative to the coil pieces 210 in a direction perpendicular to the axial direction AD. Therefore, the gap protrusions 285 can reduce the workload involved in attaching the support plate 281 to the coil pieces 210.

[0118] According to this embodiment, the coil pieces 210 protrude in the axial direction AD beyond the hole inner surface 283 in the piece holes 282. With this configuration, even if the molten material 405 flowing into the piece holes 282 overflows from the piece holes 282, the molten material 405 is more likely to flow toward the support plate 281 than toward the coil pieces 210. Therefore, when an operator flows the molten material 405 into the piece holes 282, the molten material 405 is less likely to adhere to the piece end surfaces 210a of the coil pieces 210. Therefore, there is no need to remove the molten material 405 from the piece end surfaces 210a. Furthermore, it is possible to prevent the molten material 405 remaining on the piece end surfaces 210a from reducing the magnetic field generated by the coil pieces 210 or the output torque of the motor 61.

[0119] According to the present embodiment, the protective protrusion 243 is provided to extend along the outer peripheral edge of the plate bonding portion 251 and covers the outer peripheral edge of the plate bonding portion 251 from the outer periphery. With this configuration, when the molten material 405 flows into the piece hole 282, the protective protrusion 243 prevents the molten material 405 from spreading too much. Therefore, the protective protrusion 243 can prevent the molten material 405 from spreading to unintended parts of the workpiece W and from flowing out of the plate gap 288 or the hole gap 289. Therefore, it is possible to prevent a shortage of the molten material 405 in the gaps 288 and 289. In other words, it is possible to prevent a shortage of the adhesive force between the support plate 281 and the coil piece 210 by the plate bonding portion 251.

[0120] With coil piece 210, it is relatively easy to form core 231 into a shape that is convenient for bonding to support plate 281 so as not to reduce the magnetic field generated by coil piece 210 or the output torque of motor 61. On the other hand, it is relatively difficult to form coil portion 211 into a shape that is convenient for bonding to support plate 281 so as not to reduce the magnetic field generated by coil piece 210 or the output torque of motor 61. For this reason, as in this embodiment, it is preferable that plate bonding portion 251 bonds support plate 281 and core 231, thereby bonding support plate 281 and coil piece 210 together.

[0121] According to this embodiment, in the manufacturing process of the motor device 60, an operator pours molten material 405 from the piece holes 282 into between the support plate 281 and the coil pieces 210, and solidifies the molten material 405 to form the plate bonding portion 251. By forming the plate bonding portion 251 in this manner, the workload involved in fixing the coil portion 211 to the motor housing 70 can be reduced.

[0122] According to this embodiment, the operator adjusts the injection angle θ so that the injection portion 412 ejects the molten material 405 toward the piece outer peripheral surface 210b. Therefore, when the operator injects the molten material 405 into the piece hole 282, the molten material 405 ejected from the injection portion 412 is less likely to adhere to the piece end surface 210a. This prevents the molten material 405 adhering to the piece end surface 210a from causing problems such as a decrease in the output of the motor 61. Furthermore, ejecting the molten material 405 toward the piece outer peripheral surface 210b makes it easier for the molten material 405 to flow along the piece outer peripheral surface 210b toward the plate gap 288. Therefore, the piece outer peripheral surface 210b can be used as a guide surface for the molten material 405.

[0123] According to this embodiment, the worker flows the molten material 405 from the injection part 412 into the piece hole 282 while adjusting the injection temperature of the molten material 405 using the temperature adjustment part 414. By adjusting the injection temperature of the molten material 405, the worker can prevent unintentional changes in the amount of molten material 405 released from the injection part 412. This makes it easy for the worker to ensure that the amount of molten material 405 injected from the injection part 412 into the piece hole 282 is neither too much nor too little.

[0124] Second Embodiment In the first embodiment, the gap recess 284 is formed in a horizontally elongated shape so as to extend in the circumferential direction CD and the radial direction RD along the piece outer peripheral surface 210b. In contrast, in the second embodiment, the gap recess 284 does not have to be horizontally elongated. The configurations, actions, and effects of the second embodiment that are not particularly described are the same as those of the first embodiment. The second embodiment will be described mainly focusing on the differences from the first embodiment.

[0125] 15, in the inner circumferential facing surface 283c, the gap recessed portion 284 is not formed in a horizontally elongated shape. In the inner circumferential facing surface 283c, the length dimension of the gap recessed portion 284 in the radial direction RD does not have to be greater than the length dimension of the gap protruding portion 285. For example, in the inner circumferential facing surface 283c, the length dimension of the gap recessed portion 284 in the radial direction RD is smaller than the length dimension of the gap protruding portion 285.

[0126] As with the inner circumferential facing surface 283c, the gap recesses 284 on the inner circumferential inner surface 283b do not have to be formed in a horizontally elongated shape. On the inner circumferential inner surface 283b, the length dimension of the gap recesses 284 in the circumferential direction CD does not have to be greater than the length dimension of the gap protrusions 285.

[0127] Furthermore, the gap recess 284 may be formed in a vertically elongated shape. For example, on the inner circumferential facing surface 283c, the gap recess 284 may extend elongatedly in the circumferential direction CD. The length dimension of the gap recess 284 in the circumferential direction CD may be greater than the length dimension of the gap recess 284 in the radial direction RD.

[0128] Third Embodiment In the first embodiment, the coil pieces 210 are exposed in the axial direction AD through the piece holes 282. In contrast, in the third embodiment, the coil pieces 210 do not have to be exposed in the axial direction AD. The configurations, actions, and effects of the third embodiment that are not specifically described are the same as those of the first embodiment. The third embodiment will be described mainly focusing on the differences from the first embodiment.

[0129] As shown in FIG. 16 , adhesive holes 430 are formed in the support plate 281. The adhesive holes 430 penetrate the support plate 281 in the axial direction AD. The adhesive holes 430 correspond to plate through holes. A plurality of adhesive holes 430 are arranged in the circumferential direction CD and the radial direction RD. The adhesive holes 430 are provided in the coil piece 210 at positions aligned in the axial direction AD. The coil piece 210 is not inserted into the adhesive holes 430. A plurality of adhesive holes 430 are provided for one coil piece 210. Note that only one adhesive hole 430 may be provided for one coil piece 210.

[0130] Unlike the first embodiment, the coil piece 210 does not have a core extension portion 234. In the coil piece 210, the core body 232 and the core flange 233 form the piece end surface 210a. The support plate 281 covers the coil piece 210 from the rotor 300 side. The support plate 281 faces the piece end surface 210a via a plate gap 288. The adhesive hole 430 extends from the plate gap 288 in the axial direction AD.

[0131] In the plate bonding portion 251, an exposed bonding portion 253 is provided in the bonding hole 430. The exposed bonding portion 253 is exposed to the rotor 300 side through the bonding hole 430. The plate bonding portion 251 is provided in the plate gap 288, and is thereby provided between the support plate 281 and the piece end surface 210a. The plate bonding portion 251 bonds the plate surface of the support plate 281 and the piece end surface 210a.

[0132] In the manufacturing process of motor device 60, in step P108, an operator uses injection device 411 to inject molten material 405 into bonding holes 430. The operator causes molten material 405 to flow into plate gaps 288 through bonding holes 430. Thereafter, in step P109, the operator solidifies molten material 405 to form plate bonding portions 251, as in the first embodiment.

[0133] <Other embodiments> The disclosure of this specification is not limited to the exemplified embodiments. The disclosure encompasses the exemplified embodiments and modifications thereto by those skilled in the art. For example, the disclosure is not limited to the combinations of parts and elements shown in the embodiments, and can be implemented in various modifications. The disclosure can be implemented in various combinations. The disclosure can have additional parts that can be added to the embodiments. The disclosure encompasses the omission of parts and elements from the embodiments. The disclosure encompasses the substitution or combination of parts and elements between one embodiment and another embodiment. The disclosed technical scope is not limited to the description of the embodiments. The disclosed technical scope is defined by the claims, and should be interpreted as including all modifications within the meaning and scope equivalent to the claims.

[0134] In each of the above embodiments, the hole gap 289 may be formed in any manner between the piece outer peripheral surface 210b and the hole inner peripheral surface 283. For example, the hole gap 289 may be provided between the inner peripheral surface 283a and the outer peripheral surface 235a.

[0135] In each of the above embodiments, the plate through-holes such as the piece hole 282 do not have to be through-holes. For example, the plate through-holes may be notches or the like as long as they penetrate a support plate portion such as the support plate 281 in the axial direction AD. In a configuration in which a plurality of support plate portions are arranged in the circumferential direction CD or the radial direction RD, the portion between two adjacent support plate portions may be the plate through-hole.

[0136] In each of the above embodiments, as long as the coil piece support portion 280 is configured to support the coil piece 210, the support plate 281 may be provided in any manner relative to the coil piece 210. For example, the coil piece support portion 280 may have only one of the first support plate 281A and the second support plate 281B. In this configuration, as long as the support plate 281 and the coil piece 210 are bonded together by the plate bonding portion 251, the support plate 281 and the coil piece 210 may be fixed together by a fastener such as a bolt, or may not be fixed together by a fastener.

[0137] In each of the above embodiments, recesses such as the gap recess 284 may be provided on at least one of the piece outer peripheral surface 210b and the hole inner peripheral surface 283. For example, the recesses may be provided on the piece outer peripheral surface 210b. Even in this configuration, the recesses can form an adhesive gap such as the hole gap 289 between the piece outer peripheral surface 210b and the hole inner peripheral surface 283.

[0138] In each of the above embodiments, the connecting member such as the support pole 291 may connect the first support plate portion such as the first support plate 281A and the second support plate portion such as the second support plate 281B in any manner. For example, the connecting member may be a member that extends in a plate shape in the circumferential direction CD. Furthermore, the connecting members do not have to be arranged in multiple rows in the circumferential direction CD.

[0139] In each of the above embodiments, the support plate 281 may be fixed in any manner to the motor outer peripheral wall 71. For example, the support plate 281 may be fixed to the inner peripheral surface of the wall inner protrusion 73. Alternatively, the support plate 281 may be fixed directly to the motor outer peripheral wall 71 without using the wall inner protrusion 73.

[0140] In each of the above embodiments, the member forming the adhesive cover portion such as the protective protrusion 243 does not have to be the piece protection portion 241. For example, the adhesive cover portion may be formed by the coil portion 211 or the core 231 in the coil piece 210. The adhesive cover portion may also be formed by the support plate 281. For example, the adhesive cover portion may be formed by a protrusion provided on the plate surface of the support plate 281.

[0141] In each of the above embodiments, the coil piece 210 may have a bobbin. In the coil piece 210, the coil portion 211 may be wound around the core 231 via the bobbin. For example, the bobbin is made of a resin material or the like and has electrical insulation properties. The bobbin is provided so as to cover the outer peripheral surface of the core 231. Furthermore, the coil piece 210 does not need to have the piece protection portion 241.

[0142] In each of the above embodiments, the air vehicle on which the motor device 60 is mounted does not have to be a vertical take-off and landing aircraft as long as it is electrically powered. For example, the air vehicle may be an electric aircraft capable of take-off and landing with a taxiing motion. Furthermore, the air vehicle may be a rotary-wing aircraft or a fixed-wing aircraft. The air vehicle may also be an unmanned air vehicle without a crew member on board. The unmanned air vehicle may or may not have a crew member cabin 14. Furthermore, a pilot may remotely operate the air vehicle. The eVTOL 10 may be referred to as a manned air vehicle as long as it is capable of carrying a person.

[0143] In each of the above embodiments, the moving body on which the motor device 60 is mounted does not have to be an aircraft, as long as it can move by rotation of a rotating body. For example, the moving body may be a vehicle, a ship, construction machinery, or agricultural machinery. For example, if the moving body is a vehicle or construction machinery, the rotating body may be a wheel for movement, and the output shaft portion may be an axle. If the moving body is a ship, the rotating body may be a screw propeller for propulsion, and the output shaft portion may be a propeller shaft. Furthermore, the moving body may be an automated guided vehicle or an electric wheelchair. For example, an automated guided vehicle or an electric wheelchair is equipped with a relatively small motor device 60.

[0144] In each of the above embodiments, the motor device 60 does not have to be mounted on a moving object. For example, the motor device 60 may be installed in stationary equipment, machinery, or devices. In this way, the motor device 60 is not limited to being mounted on a moving object, and can be used as a drive device for various applications.

[0145] (Disclosure of technical ideas) This specification discloses multiple technical ideas described in the following multiple clauses. Some clauses may be written in a multiple dependent form, with the subsequent clause referring to the preceding clause as an alternative. Furthermore, some clauses may be written in a multiple dependent form, referring to another multiple dependent clause. These multiple dependent clauses define multiple technical ideas.

[0146] (Technical thought 1) A rotating electric machine (60) driven by a supply of electric power, a stator (200) having a coil piece (210) formed including a current-carrying coil portion (211); a rotor (300) that rotates about a rotation axis (Cm) and is arranged on the stator in an axial direction (AD) along which the rotation axis extends; a housing (70) that accommodates the stator and the rotor; a support plate portion (281) fixed to the housing, extending in a plate shape in a direction perpendicular to the axial direction, and supporting the coil piece in a state of being overlapped with the coil piece from the axial direction; an adhesive portion (251) provided between the support plate portion and the coil piece, and adhesively bonding the support plate portion and the coil piece; a plate penetration portion (282, 430) penetrating the support plate portion in the axial direction so that the adhesive portion is exposed in the axial direction; A rotating electric machine comprising:

[0147] (Technical thought 2) the coil piece is exposed in the axial direction while inserted into the plate-penetrating portion, A rotating electric machine according to Technical Idea 1, wherein the adhesive portion is exposed in the axial direction through an adhesive gap (289) formed between the coil piece and the support plate portion at the plate penetration portion.

[0148] (Technical Thought 3) The support plate portion is a through-forming surface (283) that forms the plate through-hole; a gap recess (284) formed on the through-hole forming surface, which forms the adhesive gap between the outer peripheral surface (210b) of the coil piece and the through-hole forming surface; The rotating electric machine according to Technical Idea 2,

[0149] (Technical Thought 4) The rotating electric machine according to Technical Idea 3, wherein the gap recess extends along the outer circumferential surface in a direction perpendicular to the axial direction.

[0150] (Technical Thought 5) The support plate portion is A rotating electric machine according to Technical Idea 2 or 3, having a displacement control portion (285) provided along the outer peripheral surface (210b) of the coil piece at a position aligned with the adhesive gap, and contacting the outer peripheral surface to control displacement of the support plate portion relative to the coil piece.

[0151] (Technical Thought 6) The rotating electric machine according to any one of Technical Ideas 1 to 5, wherein the coil pieces protrude in the axial direction beyond a through-forming surface (283) that forms the plate through-hole in the support plate portion.

[0152] (Technical Thought 7) an adhesive covering portion (243) extending along the outer peripheral edge of the adhesive portion and covering the outer peripheral edge of the adhesive portion from the outer peripheral side of the adhesive portion; 7. A rotating electric machine according to any one of Technical Ideas 1 to 6, comprising:

[0153] (Technical Thought 8) The coil piece has a core (231) around which the coil portion is wound, The rotating electric machine according to any one of Technical Ideas 1 to 7, wherein the adhesive portion bonds the support plate portion to the core, thereby bonding the support plate portion to the coil piece.

[0154] (Technical Thought 9) a stator (200) having a coil piece (210) formed including a current-carrying coil portion (211); a rotor (300) that rotates about a rotation axis (Cm) and is arranged on the stator in an axial direction (AD) along which the rotation axis extends; a housing (70) that accommodates the stator and the rotor; a support plate portion (281) fixed to the housing, extending in a plate shape in a direction perpendicular to the axial direction, and supporting the coil piece in a state of being overlapped with the coil piece from the axial direction; A manufacturing method for manufacturing a rotating electric machine (60) comprising: an attachment step (P102 to P104) of attaching the coil piece to the housing by the support plate portion; a flowing step (P108) of flowing a molten material (405) between the support plate portion and the coil pieces through a plate penetration portion (282, 430) that penetrates the support plate portion in the axial direction; a solidification step (P109) of solidifying the molten material flowing between the support plate portion and the coil pieces to form adhesive portions (251) that bond the support plate portion and the coil pieces; A method for manufacturing a rotating electric machine comprising:

[0155] (Technical Thought 10) The mounting step includes mounting the coil piece to the support plate portion so that the coil piece is exposed in the axial direction through the plate-penetrating portion and so that an adhesive gap (289) is formed between the coil piece and the support plate portion at the plate-penetrating portion; The method for manufacturing a rotating electric machine described in Technical Idea 9, wherein the inflow process adjusts the discharge angle (θ) at which the discharge device (411) discharges the molten material so that the discharge device discharges the molten material toward the outer peripheral surface (210b) of the coil piece.

[0156] (Technical Thought 11) The method for manufacturing a rotating electric machine according to Technical Idea 9 or 10, wherein the inflow process comprises flowing the molten material from the discharge device (411) into the plate penetration portion while adjusting the temperature of the molten material discharged from the discharge device (411) using a temperature control device (414). [Explanation of symbols]

[0157] 60...motor device, 70...motor housing, 200...stator, 210...coil piece, 210b...piece outer surface, 211...coil portion, 231...core, 243...protective protrusion, 251...plate bonding portion, 281...support plate, 282...piece hole, 283...hole inner surface, 284...gap recess, 285...gap protrusion, 289...hole gap, 300...rotor, 405...molten material, 411...injection device, 414...temperature adjustment portion, 430...bonding hole, AD...axial direction, Cm...motor axis, θ...injection angle.

Claims

1. A rotating electric machine (60) driven by a supply of electric power, a stator (200) having a coil piece (210) formed including a current-carrying coil portion (211); a rotor (300) that rotates about a rotation axis (Cm) and is arranged on the stator in an axial direction (AD) along which the rotation axis extends; a housing (70) that accommodates the stator and the rotor; a support plate portion (281) fixed to the housing, extending in a plate shape in a direction perpendicular to the axial direction, and supporting the coil piece in a state of being overlapped with the coil piece from the axial direction; an adhesive portion (251) provided between the support plate portion and the coil piece, and adhesively bonding the support plate portion and the coil piece; a plate penetration portion (282, 430) penetrating the support plate portion in the axial direction so that the adhesive portion is exposed in the axial direction; A rotating electric machine comprising:

2. the coil piece is exposed in the axial direction while inserted into the plate-penetrating portion, 2. The rotating electric machine according to claim 1, wherein the adhesive portion is exposed in the axial direction through an adhesive gap (289) formed between the coil piece and the support plate portion in the plate penetration portion.

3. The support plate portion is A through-forming surface (283) forming the plate through-portion; a gap recess (284) that is a recess provided on the through-hole forming surface and forms the adhesive gap between the outer peripheral surface (210b) of the coil piece and the through-hole forming surface; 3. The rotating electric machine according to claim 2, further comprising:

4. The rotating electric machine according to claim 3 , wherein the clearance recess extends along the outer circumferential surface in a direction perpendicular to the axial direction.

5. The support plate portion is A rotating electric motor as described in claim 2 or 3, which has a displacement control portion (285) provided along the outer peripheral surface (210b) of the coil piece at a position aligned with the adhesive gap, and which contacts the outer peripheral surface to control displacement of the support plate portion relative to the coil piece.

6. 5. The rotating electric machine according to claim 1, wherein the coil piece protrudes in the axial direction beyond a through-forming surface (283) that forms the plate through-hole in the support plate portion.

7. an adhesive covering portion (243) that is provided so as to extend along the outer peripheral edge of the adhesive portion and covers the outer peripheral edge of the adhesive portion from the outer peripheral side of the adhesive portion; The rotating electric machine according to any one of claims 1 to 4, comprising:

8. The coil piece has a core (231) around which the coil portion is wound, 5. The rotating electric machine according to claim 1, wherein the adhesive portion bonds the support plate portion to the core, thereby bonding the support plate portion to the coil piece.

9. a stator (200) having a coil piece (210) formed including a current-carrying coil portion (211); a rotor (300) that rotates about a rotation axis (Cm) and is arranged on the stator in an axial direction (AD) along which the rotation axis extends; a housing (70) that accommodates the stator and the rotor; a support plate portion (281) fixed to the housing, extending in a plate shape in a direction perpendicular to the axial direction, and supporting the coil piece in a state of being overlapped with the coil piece from the axial direction; A manufacturing method for manufacturing a rotating electric machine (60) comprising: an attachment step (P102 to P104) of attaching the coil piece to the housing by the support plate portion; a flow-in process (P108) of flowing a molten material (405) in a molten state between the support plate portion and the coil piece through a plate-penetrating portion (282, 430) that penetrates the support plate portion in the axial direction; a solidification process (P109) for solidifying the molten material flowing between the support plate portion and the coil piece to form an adhesive portion (251) that adheres the support plate portion and the coil piece; A method for manufacturing a rotating electric machine comprising:

10. The mounting step includes mounting the coil piece to the support plate portion so that the coil piece is exposed in the axial direction through the plate-penetrating portion and so that an adhesive gap (289) is formed between the coil piece and the support plate portion at the plate-penetrating portion; 10. The method for manufacturing a rotating electric machine according to claim 9, wherein the flow-in process adjusts a discharge angle (θ) at which the discharge device (411) discharges the molten material so that the discharge device discharges the molten material toward the outer peripheral surface (210b) of the coil piece.

11. 11. The method for manufacturing a rotating electric machine according to claim 9 or 10, wherein the flow-in process comprises flowing the molten material from a discharge device (411) into the plate penetration portion while adjusting the temperature of the molten material discharged from the discharge device (411) using a temperature control device (414).

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