Motor of refrigeration cycle equipment and refrigeration cycle equipment with the same

Abstract

To solve the problem of force acting on a wiring board during resin molding in motor manufacturing, causing defects.SOLUTION: A motor comprises: a rotor; a stator intermediate assembly with coil and insulator holding the coil; a wiring board 425 that conducts electricity to the coil; a terminal 460 connecting the coil to the wiring board 425; and a resin to fill in around the perimeter of the wiring board 425. Through-holes 425b are formed in the wiring board 425. The terminal 460 has a fixed portion 465 that is fixed to the wiring board 425 via the through hole 425b. Between an insulator terminal box 423 and the wiring board 425, there is a spacer 480, in addition to the terminal 460.SELECTED DRAWING: Figure 18A

Description

[Technical field]

[0001] The present invention relates to a motor for a refrigeration cycle device and a refrigeration cycle device including the motor. [Background technology]

[0002] Patent Document 1 (JP Patent Publication 10-174338A) discloses a motor in which a coil and a wiring board are connected by terminals, and the insulating frame that holds the coil and the wiring board are filled with resin. Terminals are inserted into holes in the wiring board and soldered. Summary of the Invention [Problem to be solved by the invention]

[0003] However, when manufacturing a motor as described above, depending on the method of connecting the terminals to the wiring board and the method of resin molding, it is anticipated that problems may occur, such as forces acting on the wiring board during resin molding, resulting in poor connections between the wiring board and the terminals, or restrictions on the resin pressure during resin molding. [Means for solving the problem]

[0004] A motor according to a first aspect is a motor used in a refrigeration cycle apparatus, and includes a rotor, a stator intermediate assembly, a wiring board, a terminal, and a resin. The stator intermediate assembly has a coil and a coil holding portion that holds the coil. The wiring board passes electricity through the coil. The terminal connects the coil and the wiring board. The resin fills at least the periphery of the wiring board. A through hole is formed in the wiring board. The terminal has a fixing portion that is fixed to the wiring board via the through hole. A spacer is provided between the coil holding portion and the wiring board, in addition to the terminal.

[0005] In this motor, a spacer separate from the terminals is present between the coil holding portion and the wiring board, which suppresses changes in the relative position between the wiring board and the fixing portion of the terminals when resin is molded around the wiring board, or changes in the relative posture between the wiring board and the fixing portion of the terminals when resin is molded around the wiring board, thereby suppressing poor connections between the wiring board and the terminals of the motor, or reducing restrictions on resin molding during motor manufacturing.

[0006] A motor according to a second aspect is the motor for the refrigeration cycle device according to the first aspect, in which the resin is molded around the wiring board by a molding method in which a resin that is liquid or gelled during injection molding is poured around the wiring board and hardened. The spacer suppresses changes in the relative position between the fixing part and the through hole or the relative attitude between the fixing part and the through hole during molding of the resin.

[0007] A motor according to a third aspect is the motor for the refrigeration cycle device according to the first or second aspect, wherein the resin fills at least a space between the coil holding portion and the wiring board.

[0008] In this motor, the space between the coil holding portion and the wiring board is filled with resin, so a spacer is not necessary in the finished motor. However, in order to prevent the above-mentioned anticipated problems, a spacer is provided between the coil holding portion and the wiring board.

[0009] A motor according to a fourth aspect is the motor of the refrigeration cycle device according to any one of the first aspect to the third aspect, in which the spacer is a member separate from the stator intermediate assembly.

[0010] A motor according to a fifth aspect is the motor of the refrigeration cycle device according to any one of the first aspect to the third aspect, wherein the spacer is a part of the stator intermediate assembly and extends from the coil holding portion toward the wiring board.

[0011] A motor according to a sixth aspect is the motor for the refrigeration cycle device according to any one of the first aspect to the fifth aspect, wherein the fixing portion is press-fitted into the through-hole.

[0012] In this motor, the fixing part is fixed to the wiring board by press fitting, so if a large force is applied to the wiring board during resin molding, there is a risk that the fixed state achieved by the press fitting will be lost. However, in this case, a spacer is provided between the coil holding part and the wiring board, which prevents the fixed state from being lost.

[0013] A motor according to a seventh aspect is the motor of the refrigeration cycle device according to any one of the first aspect to the sixth aspect, wherein the fixed portion is fixed to the wiring board without soldering and is electrically connected to the wiring board.

[0014] In this motor, the fixed portion of the terminal is fixed to the wiring board without soldering, so if a large force is applied to the wiring board during resin molding, the electrical connection of the terminal to the wiring board may be damaged, which may result in a connection failure. However, in this motor, a spacer is provided between the coil holding portion and the wiring board, which prevents connection failure.

[0015] A motor according to an eighth aspect is a motor for a refrigeration cycle device according to any one of the first to seventh aspects, wherein the terminals include first to Nth terminals (N is an integer of 2 or more) arranged along a rotation direction of the motor, and the spacers include first to Mth spacers (M is an integer of 2 or more) arranged along a rotation direction of the motor.

[0016] In this motor, multiple terminals are arranged along the direction of motor rotation, and multiple spacers are arranged along the direction of motor rotation, thereby reducing positional or attitude changes of each of the fixed portions of the multiple terminals relative to the wiring board during resin molding.

[0017] A motor according to a ninth aspect is a motor for a refrigeration cycle device according to any one of the first to seventh aspects, wherein the terminals have a first terminal to an Nth terminal (N is an integer of 2 or more) arranged along a rotation direction of the motor. The spacer has at least a first spacer. The first spacer is disposed in the vicinity of the first terminal to the Pth terminal (P is an integer of 2 or more and N or less).

[0018] In this motor, multiple terminals are lined up in the direction of motor rotation, and a first spacer is arranged near the multiple terminals, and one first spacer can suppress positional or attitude changes of the fixing parts of the multiple terminals relative to the wiring board during resin molding. This makes it possible to stabilize the fixing state of the fixing parts of many terminals to the wiring board with a small number of spacers.

[0019] A motor according to a tenth aspect is a motor for a refrigeration cycle device according to any one of the first to ninth aspects, in which the resin is molded around the wiring board by a molding method in which a resin that is in a liquid state or in a gel state during injection molding is poured around the wiring board and hardened using a mold. When molding the resin around the wiring board, the second surface is pressed by a pin provided in the mold, and pin marks remain in the resin after molding. The second surface is one of both surfaces of the wiring board opposite to the first surface with which the spacer contacts.

[0020] When the resin is molded around the wiring board of this motor, a spacer is in contact with the first surface of the wiring board, and a pin of a mold is in contact with the second surface of the wiring board. This prevents the wiring board from deforming even if the pressure of the resin acts on the wiring board during resin molding.

[0021] A motor according to an eleventh aspect is a motor for a refrigeration cycle device according to any one of the first to ninth aspects, in which the resin is molded around the wiring board by a molding method in which a liquid resin or a resin that becomes a gel during injection molding is poured around the wiring board using a mold and hardened. When molding the resin around the wiring board, the liquid or gel resin is injected into the internal space of the mold at a pressure of 1.0 MPa or more, and the pressure of the liquid or gel resin is applied to the wiring board.

[0022] In this motor, liquid or gel resin is injected into the internal space of the mold at a pressure of 1.0 MPa or more during resin molding, which applies a large force to the wiring board, potentially causing a change in the relative position between the wiring board and the terminal fixing portion, or a change in the relative posture between the wiring board and the terminal fixing portion when the resin is molded around the wiring board. However, in this motor, a spacer separate from the terminals is present between the coil holding portion and the wiring board, which prevents the above-mentioned change in relative position or posture from occurring.

[0023] A refrigeration cycle apparatus according to a twelfth aspect includes the motor according to any one of the first aspect to the eleventh aspect, and a fan rotated by the motor. [Brief description of the drawings]

[0024] [Figure 1] FIG. 1 is a diagram showing a refrigerant circuit and a fan of an air conditioner that performs a refrigeration cycle. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a vertical cross-sectional view of an air conditioning indoor unit. [Figure 4] FIG. 2 is a front view of the support body and other components of the air conditioning indoor unit. [Diagram 5] FIG. [Figure 6] FIG. 4 is a cross-sectional view showing a motor and a support body that supports the motor. [Figure 7] FIG. 2 is a perspective view of a stator intermediate assembly and a wiring board of the motor before resin molding. [Figure 8] 8 is a perspective view of FIG. 7 with the wiring board, the spacer, and the harness connection portion removed. [Figure 9] 8 is a side view of the stator intermediate assembly of the motor, in which the stator intermediate assembly and the wiring board shown in FIG. 7 are seen from the side. [Figure 10] FIG. [Figure 11] 11 is a perspective view of the terminal as seen from a different direction than in FIG. 10. [Figure 12] 2 is a perspective view of a wiring board, a spacer, and a harness connection portion; FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. [Figure 16] 13 is a perspective view of the wiring board, the spacer, and the harness connection portion, as viewed from a different direction than in FIG. 12. [Figure 17] FIG. 1 is a cross-sectional view showing a terminal press-fitted into a wiring board. [Figure 18A] 18 is a cross-sectional view showing the terminal press-fitted into the wiring board, as viewed from a different direction than in FIG. 17. [Figure 18B] 18B is a cross-sectional view of the wiring board and the terminals taken along the same cross section as FIG. 18A, showing changes in position and attitude of the wiring board relative to the terminals when it is assumed that there is no spacer. [Figure 19] FIG. 6 is an external view of the motor, seen from a different direction than that of FIG. 5. [Figure 20] FIG. 13 is a top view of a spacer according to modification A. [Figure 21] 13 is a cross-sectional view showing a protrusion of a terminal box serving as a spacer of modification B. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, an air conditioner and a motor which is a component of the air conditioner will be described with reference to the drawings.

[0026] (1) Air conditioning system configuration FIG. 1 is a schematic diagram of an air conditioner 100 (refrigeration cycle device). The air conditioner 100 is a device that cools and heats the interior of a building or the like using a vapor compression refrigeration cycle. The air conditioner 100 is equipped with an indoor unit 1 and an outdoor unit 2. The indoor unit 1 and the outdoor unit 2 are connected via a liquid refrigerant connection pipe 105 and a gas refrigerant connection pipe 106. The refrigerant circuit that constitutes the vapor compression refrigeration cycle of the air conditioner 100 is formed by connecting the indoor unit 1 and the outdoor unit 2 via the refrigerant connection pipes 105, 106. The refrigerant circuit is filled with refrigerant.

[0027] The indoor unit 1 is installed indoors and constitutes a part of the refrigerant circuit. The indoor unit 1 mainly includes an indoor heat exchanger 12 and an indoor fan .

[0028] The indoor heat exchanger 12 functions as a refrigerant evaporator during cooling operation to cool the indoor air, and functions as a refrigerant radiator during heating operation to heat the indoor air.

[0029] The indoor fan 14 draws indoor air into the indoor unit 1, exchanges heat with the refrigerant in the indoor heat exchanger 12, and then supplies the air to the room as supply air. The frequency (number of rotations) of the motor 40 of the indoor fan 14 can be changed by an inverter.

[0030] The outdoor unit 2 is installed outdoors and constitutes a part of the refrigerant circuit. The outdoor unit 2 has a compressor 121, a four-way switching valve 122, an outdoor heat exchanger 123, an expansion valve 124, a liquid-side shut-off valve 126, a gas-side shut-off valve 127, and an accumulator 128. The outdoor unit 2 also has an outdoor fan 136. Each component of the outdoor unit 2 is a part of the outdoor unit of a room air conditioner that is widely used in general, and therefore a detailed description will be omitted.

[0031] (2) Air conditioner operation The air conditioner 100 performs cooling operation and heating operation.

[0032] In cooling operation, the four-way switching valve 122 is switched to the cooling cycle state (the state shown by the solid line in FIG. 1), and the high-pressure gas refrigerant exchanges heat with the outdoor air in the outdoor heat exchanger 123, dissipating heat and becoming a high-pressure liquid refrigerant. Also, in cooling operation, the refrigerant decompressed by the expansion valve 124 exchanges heat with the indoor air in the indoor heat exchanger 12 and evaporates. This cools the indoor air, which is then supplied to the room to cool the room.

[0033] In heating operation, the four-way switching valve 122 is switched to the heating cycle state (the state shown by the dashed line in FIG. 1), and the high-pressure gas refrigerant exchanges heat with the indoor air in the indoor heat exchanger 12, dissipating heat and becoming a high-pressure liquid refrigerant. This heats the indoor air, which is then supplied to the room, heating the room. The liquid refrigerant leaving the indoor heat exchanger 12 is decompressed by the expansion valve 124, exchanges heat with the outdoor air in the outdoor heat exchanger 123, evaporates, and is sucked into the compressor 121.

[0034] (3) Detailed configuration of the indoor unit The indoor unit 1 is a wall-mounted unit that is used with its rear surface hung on a wall inside a room, as shown in Figures 2 to 4. The directions when the indoor unit 1 is hung on a wall and viewed from the front side toward the wall are indicated by arrows of front, rear, up, down, right, and left in Figures 2 to 4.

[0035] The indoor unit 1 includes a support 11, a front panel 11a, a main body cover 11b, an indoor heat exchanger 12, an indoor fan 14, and a flap 15. The indoor heat exchanger 12 and the indoor fan 14 are supported by the support 11 and covered by the front panel 11a and the main body cover 11b.

[0036] An intake port B2 is formed on the upper surface of the main body cover 11b, and an air outlet B1 is formed on the lower surface of the main body cover 11b. The flap 15 is disposed at the air outlet B1.

[0037] A refrigerant flows inside the many heat transfer tubes of the indoor heat exchanger 12, and exchanges heat with the air flowing between the heat transfer tubes. Air is sucked in from the suction port B2 by the rotation of the indoor fan 14. The air that flows from the suction port B2 to the indoor heat exchanger 12 passes through the indoor fan 14 and is blown out from the air outlet B1 into the indoor space.

[0038] The indoor fan 14 is a cylindrical crossflow fan that extends long in the left-right direction. A motor 40 that rotates the indoor fan 14 is disposed on the right side of the indoor fan 14. The indoor fan 14 is disposed in a fan accommodating space 20A of the support body 11 shown in FIG. 4. The motor 40 is disposed in a motor accommodating space 20B of the support body 11 shown in FIG. 4. The support body 11 is a group of resin members including a rear portion 21 that also serves as a drain pan, a scroll portion 22 located below the indoor fan 14, a first motor support portion 23 and a second motor support member 24 that support the motor 40, etc.

[0039] (4) Motor configuration (4-1) Overall configuration of the motor As shown in FIG. 5 and FIG. 6, the motor 40 has a stator 45 and a rotor 46. The stator 45 has a stator intermediate assembly 42, a harness for power supply, a harness lead member 429, a wiring board 425, a terminal 460, and a resin 430. The components of the stator 45 are integrated by the resin 430. The stator intermediate assembly 42 has a coil 421. The rotor 46 has a magnet 46b located radially outside the coil 421. The magnet 46b is disposed on the cylindrical outer periphery of the rotor 46, and the motor rotating shaft 49 is fixed to the inner periphery of the rotor 46. The coil 421 of the stator 45 is located inside the cylindrical outer periphery of the rotor 46. When a current flows through the coil 421 of the stator 45, a magnetic field is generated, and the rotor 46 having the magnet 46b rotates. This causes the motor rotating shaft 49 to rotate, which in turn rotates the indoor fan 14 fixed to the motor rotating shaft 49. Bearings 48 are disposed between the inner periphery of the stator 45 and the motor rotating shaft 49. The motor rotating shaft 49 and the rotor 46 are supported by the stator 45 via these bearings 48.

[0040] An outer circumferential portion 430a of the resin 430 integrated with the stator intermediate assembly 42 is fixed to the first motor support portion 23 and the second motor support member 24 of the support body 11 via the seal member 50. The motor 40 and the seal member 50 are pressed against the indoor fan 14 by a pressing member 60. The pressing member 60 is fixed to the support body 11 with screws while pressing the motor 40 and the seal member 50 in the direction of the rotation axis. In this way, the motor 40 is fixed to the support body 11.

[0041] (4-2) Motor stator intermediate assembly and its surrounding structure As shown in FIG. 5 to FIG. 9, the stator intermediate assembly 42 has the coil 421 and an insulator 422 that functions as a coil holding portion that holds the coil 421. A wiring board 425 that passes electricity through the coil 421 is disposed near the insulator 422. The coil 421 and the wiring board 425 are electrically connected by a terminal 460. A harness lead-out member 429 to which a harness that supplies three-phase power is connected is fixed to the wiring board 425. The harness lead-out member 429 is a member for leading the harness to the outside of the resin 430 of the resin-molded stator 45. The resin 430 is provided around the coil 421, the insulator 422, the wiring board 425, and the terminal 460. The resin 430 fills the periphery of the wiring board 425. The resin 430 fills the space between the insulator 422 and the wiring board 425. The insulator 422 and the wiring board 425 are embedded in the resin 430 to be integrated together, and the integrated insulator 422 , coil 421 , wiring board 425 , resin 430 , etc. form a stator 45 of the motor 40 .

[0042] As shown in FIG. 13, the harness pull-out member 429 has a first portion 429a connected to the wiring board 425, a second portion 429b to which the harness is connected, and the like.

[0043] As shown in FIG. 14, wiring board 425 is formed with a central circular hole 425a and a plurality of (here, 12) through holes 425b provided around central circular hole 425a.

[0044] The insulator 422 is an insulating member that holds the twelve coils 421. As shown in Figs. 8, 17, and 18A, a terminal box 423 is provided on the inner periphery of the insulator 422. The terminal box 423 extends in the rotation axis direction from a main body 422a of the insulator 422. The coil 421 is wound around the main body 422a (coil holding portion) of the insulator 422. The terminal box 423 has a first terminal box to a twelfth terminal box that are provided for each of the twelve coils 421. Here, the terminal box 423 is an assembly of the first terminal box to the twelfth terminal box, but each individual slot may also be referred to as a terminal box 423.

[0045] One terminal 460 is provided for each of the twelve coils 421. Specifically, as shown in Fig. 7 and Fig. 8, twelve terminals, a first terminal to a twelfth terminal, are provided as the terminals 460 along the motor rotation direction. In other words, the terminals 460 include a first terminal to a twelfth terminal that are aligned along the motor rotation direction. However, in this embodiment, each terminal may be referred to as a terminal 460.

[0046] As shown in Figs. 10 and 11, each terminal 460 has a central portion 461, a folded portion 462, a fixed portion 465 electrically connected to the wiring board 425, a tip portion 466, and the like. A notch 461a is formed in the lower portion of the central portion 461, and a notch 462a is formed in the lower portion of the folded portion 462. These notches 461a and 462a are connected to each other to form a U-shaped long hole. As shown in Figs. 8, 17, and 18A, the central portion 461 and the folded portion 462 of each terminal 460 are pressed into the corresponding terminal box 423. At that time, the electric wire at the end of the coil 421 is passed through the long hole formed by the notches 461a and 462a, and the end of the coil 421 and the terminal 460 are electrically connected. The state shown in FIG. 8 is a state in which terminal 460 is pressed into terminal box 423 and coil 421 and terminal 460 are connected to each other.

[0047] 7, 9, 17, and 18A show a state in which the wiring board 425 is placed over the twelve terminals 460 in the state shown in FIG. 8, the tip portion 466 of the terminal 460 penetrates the through hole 425b of the wiring board 425, and the fixing portion 465 of the terminal 460 is press-fitted into the through hole 425b. In this state, the fixing portion 465 of the terminal 460 is fixed to the wiring board 425 via the through hole 425b, and the spacer 480 is positioned between the terminal box 423 of the insulator 422 and the wiring board 425 in the rotation axis direction. In other words, the spacer 480 is provided between the insulator 422 and the wiring board 425, in addition to the terminal 460. The fixing portion 465 of the terminal 460 preferably has spring properties, and although not shown in FIGS. 10 and 11, a fixing portion 465 having a multi-spring structure is used here.

[0048] As shown in FIG. 15, the spacer 480 has an annular portion 481 and three claw portions 482. As shown in FIG. 12 and FIG. 16, the claw portions 482 of the spacer 480 are caught on the inner periphery of the wiring board 425, and the spacer 480 is supported by the wiring board 425. The annular portion 481 of the spacer 480 contacts the wiring board 425. Then, as shown in FIG. 7, FIG. 9, FIG. 17, and FIG. 18A, in a state in which the fixing portion 465 of the terminal 460 is press-fitted into the through hole 425b of the wiring board 425, the lower surface 481a (the surface opposite to the surface contacting the wiring board 425) of the annular portion 481 of the spacer 480 contacts the upper surface 423a of the terminal box 423 of the insulator 422. As shown in FIG. 18A, the spacer 480 is disposed in the vicinity of the fixing portion 465 of the terminal 460. Specifically, spacer 480 is located inside fixed portion 465 in the motor radial direction, and one end of spacer 480 contacts upper surface 423a of terminal box 423 that houses part of terminal 460. As a result, spacer 480 maintains the space between wiring board 425 and upper surface 423a of terminal box 423. Also, as a result, spacer 480 maintains the space between wiring board 425 and main body 422a of insulator 422 around which coil 421 is wound.

[0049] Fixing portion 465 of terminal 460 is fixed to wiring board 425 without soldering, and is electrically connected to wiring board 425 .

[0050] (4-3) Resin molding around the stator intermediate assembly, wiring board and terminals of the motor The stator assembly (as shown in FIGS. 7 and 9) in which fixing portions 465 of twelve terminals 460 are press-fitted and connected to through holes 425b of wiring board 425 is surrounded by resin 430. In other words, in the process of manufacturing motor 40, the periphery of stator intermediate assembly 42, wiring board 425 and terminals 460 is resin-molded.

[0051] In motor 40, electrical connection is achieved by press-fitting fixed portion 465 of terminal 460 into through hole 425b of wiring board 425, but the dimensions of the electrical connection range in the press-fit / insertion direction (see Figures 10 and 11) are limited. For this reason, when assembling motor 40, positioning of wiring board 425 is important, but there are as many as 12 connection points, and the press-fit force is likely to vary from place to place due to the balance between component dimensional tolerances and the assembly work.

[0052] In addition, when the stator assembly shown in FIG. 7 and FIG. 9 is molded with resin 430 having electrical insulation, there is a risk of misalignment of the electrical connection position between wiring board 425 and fixing portion 465 of terminal 460. If fixing portion 465 of terminal 460 is displaced from the proper connection position of through hole 425b of wiring board 425, poor electrical connection occurs. In motor 40, thermosetting unsaturated polyester resin BMC (Bulk Molding Compound) is used as resin 430, and the pressure during BMC molding (injection pressure in molding machine) is 1 MPa to 10 MPa. In the manufacturing of motor 40, a molding method is adopted in which liquid or gel resin 430 is injected around the stator assembly shown in FIG. 7 and FIG. 9 using a mold and hardened by thermosetting. Therefore, in the manufacturing of motor 40, a large pressure is applied to wiring board 425 from liquid or gel resin 430. If the spacer 480 is not provided, there is a high possibility that the electrical connection position between the wiring board 425 and the fixing portion 465 of the terminal 460 will be misaligned. FIG. 18B shows an example of the positional and postural changes of the wiring board 425 with respect to the terminal 460 during BMC molding, assuming that the spacer 480 is not provided. If the spacer 480 is not provided, the positional and postural changes of the wiring board 425 with respect to the terminal 460 will occur, and the position and postural changes of the wiring board 425 will change to, for example, the state shown by the dashed line in FIG. 18B. If the position and postural changes of the wiring board 425 reach the state shown by the dashed line in FIG. 18B, poor electrical connection between the wiring board 425 and the terminal 460 will occur.

[0053] In order to suppress the occurrence of such poor electrical connection between wiring board 425 and terminal 460 during resin molding, motor 40 according to this embodiment is provided with spacer 480, which is unnecessary for motor 40 after manufacture. Spacer 480 is disposed between wiring board 425 and terminal box 423 of insulator 422, and supports wiring board 425 from stator intermediate assembly 42 when pressure is applied from liquid or gel resin 430 to push wiring board 425 toward stator intermediate assembly 42 during resin molding. This suppresses changes in the relative position between fixing portion 465 of terminal 460 and through hole 425b of wiring board 425 and changes in the relative attitude between fixing portion 465 of terminal 460 and through hole 425b of wiring board 425 during resin molding (see FIG. 18A).

[0054] Moreover, the metal mold used in the resin molding has a pin P (see FIG. 17) that comes into contact with the second surface 425d of the wiring board 425 during the resin molding. The second surface 425d is the surface of the wiring board 425 opposite the surface on the stator intermediate assembly 42 side (see FIGS. 9, 17, and 18A). The surface of the wiring board 425 opposite the second surface 425d is the first surface 425c. During the resin molding, the second surface 425d of the wiring board 425 is pressed by a pin P provided on the metal mold, and a pin mark 430b remains in the resin 430 after the resin 430 is molded (see FIG. 19). The other first surface 425c of the wiring board 425 is supported by the spacer 480 as described above during the resin molding (see FIG. 18A, etc.).

[0055] After the resin molding, the outer circumferential portion 430a of the resin 430 is fixed to the first motor support portion 23 and the second motor support member 24 of the support body 11 via the seal member 50. As a result, the stator intermediate assembly 42 of the stator 45 and the wiring board 425 are supported by the support body 11, as shown in FIG.

[0056] (5) Features (5-1) In stator 45 of motor 40, spacer 480 separate from terminal 460 is present between terminal box 423 of insulator 422 and wiring board 425. This suppresses a change in the relative position between wiring board 425 and fixing portion 465 of terminal 460 when resin 430 is molded around wiring board 425, and a change in the relative posture between wiring board 425 and fixing portion 465 of terminal 460 when resin 460 is molded around wiring board 425. This suppresses poor connection between wiring board 425 and terminal 460.

[0057] Furthermore, without spacer 480, the injection pressure in the molding machine during resin molding would have to be set low in order to prevent poor connection between wiring board 425 and terminals 460. However, by providing spacer 480, it is possible to perform resin molding at a high injection pressure of more than 1 MPa.

[0058] In addition, in stator 45 of motor 40, the space between insulator 422 and wiring board 425 is filled with resin 430, so spacer 480 is not necessary in the completed motor 40. However, in order to prevent problems such as poor connection between wiring board 425 and terminals 460, spacer 480 is provided between insulator 422 and wiring board 425 in stator 45 of motor 40 of this embodiment.

[0059] (5-2) In the manufacturing process of stator 45 of motor 40, a stator assembly is produced in which fixed portions 465 of terminals 460 are press-fitted and connected to through holes 425b of wiring board 425, and resin 460 is molded around the stator assembly. Since fixed portions 465 of terminals 460 are fixed to wiring board 425 by press-fitting, there is a risk that the fixed state by press-fitting may be lost if a large force is applied to wiring board 425 during molding. However, since spacer 480 is provided in stator 45 of motor 40, the fixed state between terminals 460 and wiring board 425 is prevented from being lost.

[0060] (5-3) In stator 45 of motor 40, fixed portion 465 of terminal 460 is press-fitted into through-hole 425b of wiring board 425, and is not electrically connected via a conventional solder connection. Since fixed portion 465 of terminal 460 is fixed to wiring board 425 without soldering in this manner, if a large force acts on wiring board 425 during resin molding, the electrical connection of terminal 460 to wiring board 425 may be impaired, resulting in a connection failure.

[0061] However, since the motor 40 of this embodiment is provided with the spacer 480, the occurrence of poor connection is suppressed as described above.

[0062] (5-4) In the stator 45 of the motor 40, twelve terminals 460 are arranged in the direction of motor rotation, but one annular spacer 480 is provided extending in the direction of motor rotation. Therefore, only one spacer 480 is required, and manufacturing is also easy.

[0063] Furthermore, since each portion of the annular portion 481 of one spacer 480 is located in the vicinity of the fixing portion 465 of each of the twelve terminals 460, the connection state of each of the twelve fixing portions 465 to the wiring board 425 is maintained during and after the resin molding.

[0064] (5-5) In the manufacturing process of motor 40, during the above-mentioned resin molding, spacer 480 contacts first surface 425c of wiring board 425, and a pin of a mold contacts second surface 425d of wiring board 425. This prevents wiring board 425 from being deformed even if pressure from liquid or gel resin 430 acts on wiring board 425 from any direction during resin molding.

[0065] In the stator 45 of the motor 40, as shown in FIG. 19, traces 430b of the pins P remain in the resin 430 after the resin 430 is molded.

[0066] (5-6) In the manufacturing process of the stator 45 of the motor 40, the liquid or gel resin 430 is injected into the internal space of the mold at a pressure of 1.0 MPa or more during the resin molding. This causes a large force to act on the wiring board 425, which may cause a change in the relative position between the wiring board 425 and the fixing part 465 of the terminal 460, or a change in the relative posture between the wiring board 425 and the fixing part 465 of the terminal 460 when the resin 460 is molded around the wiring board 425. However, in the stator 45 of the motor 40, the spacer 480 separate from the terminal 460 is present between the terminal box 423 of the insulator 422 and the wiring board 425, so that the occurrence of the above-mentioned change in relative position or change in relative posture is suppressed. This makes it very unlikely that a motor 40 containing a connection defect will be manufactured.

[0067] (6) Variations (6-1) Variation A In the above embodiment, the spacer 480 shown in Fig. 15 is used, but instead, a spacer 490 shown in Fig. 20 may be used. Fig. 20 is a plan view of the spacer 490, and the dimension in the depth direction is the same as the dimension in the height direction of the spacer 480 (the vertical direction in Fig. 15; the rotation axis direction in Fig. 18A). The spacer 490 has 12 slots 490a, the same as the number of terminals 460. The tip portion 466 and the fixing portion 465 of each terminal 460 pass through the slot 490a of the spacer 490.

[0068] With this spacer 490, the periphery of through hole 425b of wiring board 425 into which fixing portion 465 of terminal 460 is press-fitted is entirely supported by spacer 490.

[0069] (6-2) Variation B In the above embodiment, the spacer 480 shown in FIG. 15 is used, but instead of this, a spacer portion 424b (see FIG. 21) integrally formed with the insulator may be used. The terminal box 424 shown in FIG. 21 has a spacer portion 424b which is a slot formed in the insulator and which accommodates a part of the terminal 460 and protrudes toward the wiring board 425 along the rotation axis direction. The spacer portion 424b is a cylindrical protrusion formed so as to surround the periphery of each terminal 460. As shown in FIG. 21, a tip surface 424b1 of the spacer portion 424b is in contact with a first surface 425c of the wiring board 425.

[0070] (6-3) Variation C The spacer 480 in the above embodiment and the spacer 490 in the modified example A are one annular member, but instead of this, a spacer divided into two, three, or even more may be used. For example, when a spacer divided into three is used, each spacer is provided for four of the twelve terminals 460 and includes a portion located near each of the four terminals 460.

[0071] (6-4) Variation D In the above embodiment, the terminal 460 employs the fixing portion 465 having a multi-spring structure, and the fixing portion 465 of the terminal 460 is fixed to the wiring board 425 without soldering. Alternatively, the terminal may be electrically connected to the wiring board by soldering. In this case, the change in the relative position between the wiring board and the terminal when the resin is molded around the wiring board, and the change in the relative posture between the wiring board and the terminal when the resin is molded around the wiring board are also suppressed. This prevents the solder connecting the wiring board and the terminal from peeling off or cracking, and prevents poor connection in the motor.

[0072] (6-5) Variation E In the above modification B, spacer portion 424b protrudes from terminal box 424 of the insulator toward wiring board 425. Alternatively, the spacer portion may protrude from the main body of the insulator toward the wiring board.

[0073] (6-6) Variation F 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 described in the claims. [Explanation of symbols]

[0074] 14 Indoor fan 40 Motor 42 Stator intermediate assembly 45 Stator 46 Rotor 100 Air conditioning equipment (refrigeration cycle equipment) 421 Coil 422 Insulator (coil holding part) 422a Insulator body (coil holding part) 423 Terminal Box 424 Terminal box of modification B 424b Protrusion (spacer) of terminal box of modification B 425 Wiring Board 425b through hole 430 Resin 460 Terminal 465 Terminal fixing part 480 Spacer 490 Spacer of Modification A P mold pin [Prior art documents] [Patent documents]

[0075] [Patent Document 1] Japanese Patent Application Publication No. 10-174338

Claims

1. A motor (40) for use in a refrigeration cycle device (100), A rotor (46); A stator intermediate assembly (42) having a coil (421) and a coil holding portion (422) for holding the coil; A wiring board (425) for passing electricity through the coil; A terminal (460) for connecting the coil and the wiring board; A resin (430) that fills at least the periphery of the wiring board; Equipped with A through hole (425b) is formed in the wiring board, The terminal has a fixing portion (465) that is fixed to the wiring board via the through hole, A spacer (480) is provided between the coil holding portion and the wiring board in addition to the terminal. Refrigeration cycle equipment motor.

2. the resin is molded around the wiring board by a molding method in which a liquid resin or a resin that becomes a gel during injection molding is poured around the wiring board and hardened; the spacer suppresses a change in the relative position or the relative attitude between the fixing portion and the through hole during molding of the resin. The motor of the refrigeration cycle apparatus according to claim 1.

3. The resin fills at least a space between the coil holding portion and the wiring board. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

4. The spacer is a separate member from the stator intermediate assembly. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

5. The spacer (424b) is a part of the stator intermediate assembly and extends from the coil holding portion toward the wiring board. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

6. The fixing portion is press-fitted into the through hole. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

7. the fixing portion is fixed to the wiring board without soldering and is electrically connected to the wiring board; The motor for a refrigeration cycle apparatus according to claim 1 or 2.

8. The terminals include a first terminal to an Nth terminal (N is an integer of 2 or more) arranged along a rotation direction of the motor, The spacers include a first spacer to an M-th spacer (M is an integer of 2 or more) arranged along the motor rotation direction. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

9. The terminals include a first terminal to an Nth terminal (N is an integer of 2 or more) arranged along a rotation direction of the motor, The spacer includes at least a first spacer, The first spacer is disposed in the vicinity of the first terminal to the P terminal (P is an integer of 2 or more and N or less). The motor for a refrigeration cycle apparatus according to claim 1 or 2.

10. The resin is molded around the wiring board by a molding method in which a liquid resin or a resin that becomes a gel during injection molding is poured around the wiring board using a mold and hardened; When molding resin around the wiring board, a second surface (425d) opposite to a first surface (425c) with which the spacer is in contact is pressed by a pin (P) provided on the mold, and a mark of the pin remains in the resin after molding of the resin. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

11. The resin is molded around the wiring board by a molding method in which a liquid resin or a resin that becomes a gel during injection molding is poured around the wiring board using a mold and hardened; When molding the resin around the wiring board, a liquid or gel-like resin is injected into the internal space of the mold at a pressure of 1.0 MPa or more, and the pressure of the liquid or gel-like resin is applied to the wiring board. The motor for a refrigeration cycle apparatus according to claim 1 or 2.

12. A motor (40) according to claim 1 or 2; a fan (14) rotated by the motor; A refrigeration cycle device (100) comprising:

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