Motor, air conditioner, and manufacturing method of motor

Abstract

To suppress vibration and damage due to dimensional accuracy of a rotor.SOLUTION: A motor (241) has a rotor (52). The rotor (52) includes a shaft (61), a disk (62), an annular plastic magnet (63), and a resin mold (64). The disk (62) has a central hole (62a) through which the shaft (61) penetrates. The resin mold (64) fixes the shaft (61), the disk (62), and the plastic magnet (63).SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a motor, an air conditioning device equipped with the motor, and a method for manufacturing the motor. [Background technology]

[0002] The indoor unit of an air conditioner disclosed in Patent Document 1 (JP 2005-069580 A) has an indoor fan motor that rotates a crossflow fan. The indoor fan motor has a stator and a rotor. The rotor is an outer rotor that is fixed to the end plate of the crossflow fan. The rotor is made of, for example, a resin material mixed with magnetic powder, and the magnetic powder forms eight magnetic poles on the outer edge of the rotor.

[0003] The shaft, located at the center of the rotor, is inserted into end plates that extend perpendicular to the shaft's direction of extension. The flat portion of the rotor extends from the outer edge of the rotor along the end plate. The flat portion is molded integrally with the outer edge. The flat portion is fixed to the end plate. Summary of the Invention [Problem to be solved by the invention]

[0004] The outer edge of the rotor, which has magnetic poles, is fixed to the shaft via a flat portion and an end plate. The shaft must be inserted into the end plate, and the flat portion must contact the end plate. Because there are crossovers in the outer diameter of each of these intervening components, it is difficult to accurately achieve the relative angle and position between the shaft and rotor as designed. This can result in vibration or damage when the rotor rotates.

[0005] Furthermore, if the flat surface portion is made of a resin material mixed with magnetic powder, the rotor may be damaged due to lack of durability. [Means for solving the problem]

[0006] A motor according to a first aspect has a rotor. The rotor has a shaft, a disk, an annular plastic magnet, and a resin mold. The disk has a center hole through which the shaft passes. The resin mold fixes the shaft, the disk, and the plastic magnet.

[0007] According to this configuration, the rotor has a disk, and therefore the group of parts consisting of the shaft and the disk is in close contact with the resin mold over a wide area, allowing the resin mold to firmly fix the shaft.

[0008] A motor according to a second aspect is the motor according to the first aspect, wherein the shaft is fixed to the disk by being press-fitted into the central hole.

[0009] With this configuration, the shaft and the disk are firmly fixed to each other by press fitting, which also results in a strong fixation between the resin mold and the shaft.

[0010] A motor according to a third aspect is the motor according to the first or second aspect, in which the entire disk is disposed in a resin mold.

[0011] With this configuration, the entire surface area of ​​the disk comes into contact with the resin mold, and therefore the resin mold firmly fixes the disk.

[0012] A motor according to a fourth aspect is the motor according to any one of the first to third aspects, wherein the disk has a plurality of through holes in addition to the central hole.

[0013] According to this configuration, the resin mold fills the through holes, which makes it possible to more firmly fix the resin mold to the disk.

[0014] A motor according to a fifth aspect is the motor according to any one of the first to fourth aspects, wherein the plastic magnet has an axis and two end faces that are spaced apart in the direction in which the axis extends, and the resin mold is in contact with at least one of the two end faces.

[0015] According to this configuration, the resin mold fixes the end face of the plastic magnet, and therefore the resin mold fixes the shaft, the disk, and the plastic magnet.

[0016] A sixth aspect of the present invention relates to the motor of any one of the first to fifth aspects, further comprising a stator. The stator interacts magnetically with the rotor. The rotor is an outer rotor having a larger outer diameter than the stator.

[0017] In this configuration, the rotor is an outer rotor. Therefore, the distance from the group of parts consisting of the shaft and the disk to the plastic magnet is long. The transmission of force over this long distance is carried out by the resin mold.

[0018] A motor according to a seventh aspect is the motor according to any one of the first aspect to the sixth aspect, in which the plastic magnet is made of a resin material containing a magnetic substance.

[0019] According to this configuration, the plastic magnet is made of a magnetic material and a resin material. Therefore, the magnetic material can magnetically interact with the stator. In addition, the resin material makes it easy to mold the plastic magnet.

[0020] A motor according to an eighth aspect is the motor according to any one of the first to seventh aspects, wherein the resin mold is made of a thermosetting resin or a thermoplastic resin.

[0021] According to this configuration, the resin mold is made of a thermosetting resin or a thermoplastic resin, which makes it easy to process the resin mold.

[0022] A motor according to a ninth aspect is the motor according to any one of the first to eighth aspects, wherein the linear expansion coefficient of the plastic magnet is 3.5×10 -5 ( / ℃). The linear expansion coefficient of the resin mold is 3.5×10 -5 ( / ℃).

[0023] With this configuration, the linear expansion coefficient of the resin mold is smaller than that of the plastic magnet, and therefore the resin mold is less likely to change in volume due to temperature changes, making it less susceptible to damage such as cracks.

[0024] An air conditioner according to a tenth aspect includes a motor and a crossflow fan. The motor is the motor according to any one of the first to ninth aspects. The crossflow fan is fixed to the rotor of the motor.

[0025] According to this configuration, the rotor of the motor mounted in the air conditioner has a disk, and therefore the shaft and the resin mold are firmly fixed together, improving the reliability of the motor.

[0026] The manufacturing method of an eleventh aspect is for manufacturing a motor. In the manufacturing method, a shaft, a circular plate having a center hole, an annular plastic magnet, and a resin material are prepared. Next, the shaft and the circular plate are fixed by press-fitting the shaft into the center hole. Next, both the shaft and the plastic magnet are held in a mold or a jig fixed to the mold. Next, a resin material is injected or poured into the internal space of the mold. Next, the resin material is hardened to form a resin mold that fixes the shaft, the circular plate, and the plastic magnet.

[0027] According to this manufacturing method, the disk in the rotor of the motor is firmly fixed to the resin mold, thereby improving the reliability of the motor.

[0028] A manufacturing method according to a twelfth aspect is the manufacturing method according to the eleventh aspect, in which after the resin mold is formed, the entire disk is placed in the resin mold.

[0029] According to this manufacturing method, the entire surface area of ​​the disk comes into contact with the resin mold, and therefore the resin mold firmly fixes the disk.

[0030] A manufacturing method according to a thirteenth aspect is the manufacturing method according to the eleventh or twelfth aspect, wherein the plastic magnet has an axis and two end faces. The two end faces are spaced apart in the direction in which the axis extends. After the resin mold is formed, the resin mold is in contact with at least one of the two end faces.

[0031] According to this manufacturing method, the resin mold fixes the end faces of the plastic magnet, and therefore the resin mold fixes the shaft, the disk, and the plastic magnet. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a schematic diagram showing the appearance of an air conditioning apparatus 100 according to an embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram showing the configuration of an air conditioning device 100. FIG. [Figure 3] 2 is a cross-sectional view of the indoor fan 24 and the indoor fan motor 241. FIG. [Figure 4] FIG. 2 is a cross-sectional view of a rotor 52. [Figure 5] FIG. [Figure 6] FIG. 2 is a perspective view of a disk 62 that constitutes the rotor 52. [Figure 7] FIG. 2 is a perspective view of a plastic magnet 63 that constitutes the rotor 52. [Figure 8] 3 is a schematic diagram showing a first step of a method for manufacturing a rotor 52. FIG. [Figure 9] 10 is a schematic diagram showing a second step of the method for manufacturing the rotor 52. FIG. [Figure 10] 10 is a schematic diagram showing a third step of the method for manufacturing the rotor 52. FIG. [Figure 11] 10 is a schematic diagram showing a fourth step of the method for manufacturing the rotor 52. FIG. [Figure 12] 10 is a schematic diagram showing a fifth step of the method for manufacturing the rotor 52. FIG. [Figure 13] 10 is a schematic diagram showing a sixth step of the method for manufacturing the rotor 52. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0033] <Embodiment> (1) Overall structure 1 shows the exterior of an air conditioning apparatus 100 according to an embodiment of the present disclosure. The air conditioning apparatus 100 has an outdoor unit 10 that functions as a heat source, an indoor unit 20 that provides conditioned air to a user, and a connecting pipe 30 that connects the outdoor unit 10 and the indoor unit 20.

[0034] (2) Detailed configuration 2 shows the configuration of the air conditioner 100. The air conditioner 100 has a refrigerant circuit 90 through which refrigerant R circulates.

[0035] (2-1) Outdoor unit 10 The outdoor unit 10 is a device for obtaining hot heat or cold heat from outdoor air, which is a heat source. The outdoor unit 10 has components related to a refrigerant circuit 90, such as a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an outdoor fan 14, an outdoor expansion valve 15, an accumulator 16, a liquid shut-off valve 17, and a gas shut-off valve 18. The outdoor unit 10 also has an outdoor unit control unit 19 as a component related to the electrical system.

[0036] The compressor 11 has a compressor motor 111, a suction pipe 11a, and a discharge pipe 11b. The compressor 11 compresses the low-pressure gaseous refrigerant R sucked through the suction pipe 11a by the power of the compressor motor 111, and discharges the high-pressure gaseous refrigerant R from the discharge pipe 11b.

[0037] The four-way selector valve 12 switches the connection of the refrigerant circuit 90 depending on whether the refrigerant circuit 90 is in cooling operation or heating operation. During cooling operation, the four-way selector valve 12 forms the connection shown by the solid line in Figure 2. During heating operation, the four-way selector valve 12 forms the connection shown by the dashed line in Figure 2.

[0038] The outdoor heat exchanger 13 takes in cold or hot heat from the outdoor air into the refrigerant R. The outdoor heat exchanger 13 functions as a condenser or a heat radiator during cooling operation, and as an evaporator or a heat absorber during heating operation.

[0039] The outdoor fan 14 moves the outdoor air so that the outdoor air passes through the outdoor heat exchanger 13, thereby promoting heat exchange between the outdoor air and the refrigerant R. The outdoor fan 14 is driven by the power of an outdoor fan motor 141.

[0040] The outdoor expansion valve 15 is a device for reducing the pressure of the refrigerant R. The outdoor expansion valve 15 is a valve whose opening is adjusted by, for example, electrical control.

[0041] The accumulator 16 separates and stores the liquid refrigerant component from the circulating refrigerant R, and allows the gas refrigerant component to pass through.

[0042] The liquid shutoff valve 17 and the gas shutoff valve 18 are valves that are manually opened and closed by an installer of the outdoor unit 10. The liquid shutoff valve 17 opens and closes the flow path of the refrigerant R in a liquid state or a two-phase gas-liquid state. The gas shutoff valve 18 opens and closes the flow path of the refrigerant R in a gas state.

[0043] The outdoor unit control unit 19 acquires signals from various sensors (not shown) and further controls the compressor motor 111, the outdoor fan motor 141, the outdoor expansion valve 15, and the like.

[0044] (2-2) Indoor unit 20 The indoor unit 20 is a device for providing a user with hot or cold heat in the form of conditioned air. The indoor unit 20 has an indoor heat exchanger 23 and an indoor fan 24 as components related to the refrigerant circuit 90. Furthermore, the indoor unit 20 has an indoor unit control unit 29 as a component related to the electrical system.

[0045] The indoor heat exchanger 23 transfers the cold or hot heat of the refrigerant R to the indoor air. The indoor heat exchanger 23 functions as an evaporator or a heat absorber during cooling operation. The outdoor heat exchanger 13 functions as a condenser or a radiator during heating operation.

[0046] The indoor fan 24 moves the indoor air so that the indoor air passes through the indoor heat exchanger 23, thereby promoting heat exchange between the indoor air and the refrigerant R. The indoor fan 24 is driven by the power of an indoor fan motor 241.

[0047] The indoor unit control unit 29 acquires signals from various sensors (not shown). Furthermore, the indoor unit control unit 29 controls the indoor fan motor 241 and the like. In addition, the indoor unit control unit 29 transmits and receives data, commands, status, and other signals to and from the outdoor unit control unit 19 via communication.

[0048] (2-3) Connecting pipe 30 Arranged within the connecting pipe 30 are liquid refrigerant piping 31, gas refrigerant piping 32, and electrical communication lines 35. The liquid refrigerant piping 31 allows refrigerant R in a liquid state or a two-phase gas-liquid state to move between the outdoor unit 10 and the indoor unit 20. The liquid refrigerant piping 31 allows refrigerant R in a gas state to move between the outdoor unit 10 and the indoor unit 20. The electrical communication lines 35 allow signal transmission between the outdoor unit control unit 19 and the indoor unit control unit 29, thereby constituting the air conditioner control unit 9.

[0049] (3) Detailed configuration of the indoor fan 24 and the indoor fan motor 241 FIG. 3 shows the indoor fan 24 and the indoor fan motor 241.

[0050] (3-1) Indoor fan 24 The indoor fan 24 is a cross-flow fan and is fixed to a rotor 52 of an indoor fan motor 241.

[0051] (3-2) Indoor fan motor 241 The indoor fan motor 241 includes a stator 51 , a rotor 52 , and a bearing 53 .

[0052] (3-2-1) Stator 51 The stator 51 has an iron core 71 and a coil 72. When a current flows through the coil 72, the coil 72 generates a magnetic field.

[0053] (3-2-2) Rotor 52 4 rotates by interacting with the magnetic field generated by the coil 72 of the stator 51. The rotor 52 is an outer rotor and has a larger outer diameter than the stator 51, and furthermore, has a larger inner diameter than the outer diameter of the stator 51. The rotor 52 has a shaft 61, a disk 62, a plastic magnet 63, and a resin mold 64.

[0054] (3-2-2-1) Shaft 61 5, the shaft 61 defines an axis 63a of the rotor 52. The rotor 52 rotates around the axis 63a.

[0055] (3-2-2-2) Disk 62 5 is for firmly fixing the shaft 61 to the resin mold 64. The disk 62 is made of metal. The entire disk 62 is disposed inside the resin mold 64.

[0056] 6, the disk 62 has a center hole 62a and multiple through holes 62b. The center hole 62a is for fixing the shaft 61 to the disk 62 with the shaft 61 passing through it. The inner diameter of the center hole 62a does not have a clearance with respect to the outer diameter of the shaft 61. The shaft 61 and the disk 62 are fixed by press-fitting the shaft 61 into the center hole 62a.

[0057] The plurality of through holes 62b are for allowing a resin material to pass through when forming the resin mold 64. The plurality of through holes 62b are formed separately from the center hole 62a.

[0058] (3-2-2-3) Plastic Magnet 63 7 interacts with the magnetic field generated by the coil 72 to generate a rotational force for the rotor 52. The plastic magnet 63 has a circular ring shape centered on the axis 63a of the rotor 52. The plastic magnet 63 has a first end face 63b and a second end face 63c that are spaced apart in the direction in which the axis 63a extends. At least one of the first end face 63b and the second end face 63c may have a protrusion 63x and a recess 63y.

[0059] The plastic magnet 63 is made of a resin material containing a magnetic substance. The linear expansion coefficient of the plastic magnet 63 is 3.5×10 -5 ( / ℃).

[0060] The magnetic material is, for example, rare earth magnet powder, ferrite magnet powder, etc. The resin material is, for example, a thermosetting resin or a thermoplastic resin.

[0061] Examples of thermosetting resins include epoxy resins, bismaleimide resins, phenolic resins, urea resins, melamine resins, alkyd resins, unsaturated polyester resins, DAP resins, and polyurethane resins.

[0062] Examples of thermoplastic resins include vinyl polymers (polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS resin, AS resin, polymethacrylic acid, polymethacrylic acid ester, polyacrylic acid, polyacrylic acid ester, polyvinylidene chloride, etc.), polyamides (Nylon 6 (registered trademark), Nylon 66 (registered trademark), aromatic polyamides, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, etc.), fluororesins (PTFE, FEP, PFA, etc.), polyacetal, polycarbonate, modified polyphenylene ether, polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, polyetherimide, polyetheretherketone, polyetherketone, liquid crystalline polyester, and copolymers (random, block, graft, or alternating copolymers, etc.) in which the skeletons of these resins are arbitrarily combined.

[0063] (3-2-2-4) Resin mold 64 The resin mold 64 fixes at least the disk 62 and the plastic magnet 63 to each other. The resin mold 64 is made of a thermosetting resin or a thermoplastic resin. The linear expansion coefficient of the resin mold 64 is 3.5×10 -5 ( / ° C.) Resin mold 64 is in contact with first end surface 63b of plastic magnet 63.

[0064] (3-2-3) Bearing 53 3 is for rotatably supporting the shaft 61. The bearing 53 is installed in the stator 51. The bearing 53 is, for example, a sliding bearing or a rolling bearing.

[0065] (4) Manufacturing method of rotor 52 The rotor 52 is manufactured by, for example, the manufacturing method described below.

[0066] 8, a first mold 81 is prepared. The first mold 81 is used to form the resin mold 64. The first mold 81 has a first recess 81a and a second recess 81b. The first recess 81a functions as a jig for supporting the shaft 61. The second recess 81b functions as a jig for supporting the plastic magnet 63.

[0067] In the second step shown in FIG. 9, the shaft 61 is press-fitted into the central hole 62a of the disk 62, thereby fixing the shaft 61 and the disk 62 to each other.

[0068] 10, the shaft 61 fixed to the disk 62 is placed in the first recess 81a, and the plastic magnet 63 is placed in the second recess 81b.

[0069] 11, the second mold 82 is fitted into the first mold 81. The second mold 82 has a third recess 82a. The third recess 82a functions as a jig for supporting the shaft 61. An internal space 83 is formed between the first mold 81 and the second mold 82 that fit together.

[0070] 12, the resin material 69 is injected or poured into the internal space 83. The resin material 69 is solidified.

[0071] 13, the first mold 81 and the second mold 82 are removed. The solidified resin material 69 forms the resin mold 64. The resin mold 64 fixes the shaft 61, the disk 62, and the plastic magnet 63 together. This completes the rotor 52.

[0072] Thereafter, the indoor fan 24 is fixed to the rotor 52, and then the rotor 52 is combined with the stator 51 and the bearing 53, thereby completing the indoor fan motor 241.

[0073] (5) Features (5-1) The rotor 52 has a metal disk 62. Therefore, the metal parts group consisting of the shaft 61 and the disk 62 are in close contact with the resin mold 64 over a wide area, so that the resin mold 64 can firmly fix the shaft 61.

[0074] Without the disk 62, in order to firmly secure the shaft 61 to the resin mold 64, it would be necessary to ensure a large length in the direction of the axis 63a at the point where the shaft 61 and the resin mold 64 come into contact, which would inevitably result in an increase in the size of the rotor 52. In contrast, the rotor 52 of the present disclosure has the disk 62, which can strengthen the fixation between the shaft 61 and the resin mold 64, so that the size of the rotor 52 in the direction of the axis 63a can be reduced.

[0075] (5-2) The shaft 61 and the disk 62 are firmly fixed to each other by press fitting, and therefore the resin mold 64 and the shaft 61 are also firmly fixed to each other.

[0076] (5-3) The entire disk 62 is placed in the resin mold 64. This brings the entire surface area of ​​the disk 62 into contact with the resin mold 64. Therefore, the resin mold 64 firmly fixes the disk 62.

[0077] (5-4) The disk 62 has a plurality of through holes 62b in addition to the central hole 62a. The resin mold 64 fits into the plurality of through holes 62b. Therefore, the resin mold 64 and the disk 62 are fixed more firmly.

[0078] (5-5) The resin mold 64 is fixed to the first end surface 63b of the plastic magnet 63. Therefore, the resin mold 64 fixes the shaft 61, the disk 62, and the plastic magnet 63 together.

[0079] If the resin mold 64 does not exist and instead the plastic magnet 63 extends from the outer edge of the rotor to reach the shaft 61, the -5 Since a force is applied to the plastic magnet 63, which has a linear expansion coefficient of more than 3.5×10 ( / °C), the plastic magnet 63 is easily broken. -5 This is achieved by using a resin mold 64 having a linear expansion coefficient of less than 1 / ° C. Therefore, the risk of damage to the rotor 52 can be reduced.

[0080] (5-6) The rotor 52 is an outer rotor. Therefore, the distance from the metal parts consisting of the shaft 61 and the disk 62 to the plastic magnet 63 is long. The transmission of force over this long distance is carried out by the resin mold 64, which is more durable than the plastic magnet 63.

[0081] (5-7) The plastic magnet 63 is made of a resin material containing a magnetic substance, and therefore, the plastic magnet 63 is easy to mold.

[0082] (5-8) The resin mold 64 is made of a thermosetting resin or a thermoplastic resin, and therefore, the resin mold 64 is easy to process.

[0083] (5-9) The linear expansion coefficient of resin mold 64 is smaller than that of plastic magnet 63. Therefore, resin mold 64 is less likely to change in volume due to temperature changes, and is therefore less likely to be damaged, such as cracked.

[0084] (5-10) When forming the resin mold 64 in manufacturing the rotor 52, the first mold 81 and the second mold 82 hold both the shaft 61 and the plastic magnet 63. Therefore, the resin mold 64 can be manufactured so that it is precisely perpendicular to the axis 63a of the shaft 61 and the plastic magnet 63. This reduces vibrations and damage to the rotor 52 that occur when the rotor 52 rotates.

[0085] <Modifications of the embodiment> (6) Variations (6-1) First Modification In the above-described embodiment, the first mold 81 and the second mold 82 not only function as molds for forming the resin mold 64, but also function as jigs for supporting the shaft 61 and the plastic magnet 63. Alternatively, the jigs for supporting the shaft 61 and the plastic magnet 63 may be prepared as separate objects from the first mold 81 and the second mold 82. In that case, the jigs must be fixed to either the first mold 81 or the second mold 82.

[0086] (6-2) Second Modification In the above-described embodiment, the resin mold 64 is in contact with the first end face 63b but not with the second end face 63c of the plastic magnet 63. Alternatively, the resin mold 64 may have a shape that contacts both the first end face 63b and the second end face 63c.

[0087] (6-3) Third Modification In the above embodiment, the rotor 52 is an outer rotor. Alternatively, the rotor 52 may be an inner rotor. In this case, the outer diameter of the rotor 52 is smaller than the outer diameter of the stator 51.

[0088] <Conclusion> Although the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as defined in the claims. [Explanation of symbols]

[0089] 24: Indoor fan (cross flow fan) 51: Stator 52: Rotor 53: Bearing 61: Shaft 62:Disc 62a: Center hole 62b: Through hole 63: Plastic magnet 63a: Axial center 63b: 1st end face (end face) 63c: 2nd end face (end face) 63x: Convex 63y: Recess 64: Resin mold 69: Resin materials 81: First mold (mold) 82: Second mold (mold) 83: Interior space 100: Air conditioning equipment 241: Indoor fan motor (motor) [Prior art documents] [Patent documents]

[0090] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-069580

Claims

1. a rotor (52) having a shaft (61), a disk (62) having a central hole (62a) through which the shaft passes, an annular plastic magnet (63), and a resin mold (64) for fixing the shaft, the disk, and the plastic magnet; A motor (241).

2. The shaft is fixed to the disk by being press-fitted into the central hole. The motor according to claim 1 .

3. The entire disk is disposed within the resin mold. The motor according to claim 2 .

4. The disk has a plurality of through holes (62b) separate from the central hole. The motor according to claim 3 .

5. The plastic magnet has an axis (63a) and two end faces (63b, 63c) spaced apart in the direction in which the axis extends, the resin mold is in contact with at least one of the two end surfaces; The motor according to claim 4.

6. a stator (51) that magnetically interacts with the rotor; Furthermore, The rotor is an outer rotor having an outer diameter larger than that of the stator. The motor according to claim 5.

7. The plastic magnet is made of a resin material containing a magnetic substance.

7. The motor according to claim 1.

8. The resin mold is made of a thermosetting resin or a thermoplastic resin.

7. The motor according to claim 1.

9. The linear expansion coefficient of the plastic magnet is 3.5×10 －５ ( / °C), The linear expansion coefficient of the resin mold is 3.5×10 －５ ( / °C) or less, 7. The motor according to claim 1.

10. A motor according to any one of claims 1 to 6; a cross-flow fan (24) fixed to the rotor of the motor; Equipped with An air conditioning device (100).

11. A shaft (61), a disk (62) having a central hole (62a), an annular plastic magnet (63), and a resin material (69) are prepared; The shaft is press-fitted into the central hole to fix the shaft and the disk; Both the shaft and the plastic magnet are held in a mold (81, 82) or a jig fixed to the mold, Injecting or pouring the resin material into the internal space of the mold; The resin material is hardened to form a resin mold (64) that fixes the shaft, the disk, and the plastic magnet. A method for manufacturing a motor (241).

12. After the resin mold is formed, the entire disk is disposed in the resin mold. The method of claim 11.

13. The plastic magnet has an axis (63a) and two end faces (63b, 63c) spaced apart in the direction in which the axis extends, After the resin mold is formed, the resin mold is in contact with at least one of the two end surfaces. The method of claim 12.

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