Electric motor and compressor

Abstract

To provide a technique capable of miniaturizing a compressor by efficiently arranging a connecting member.SOLUTION: The electric motor includes a connection member configured such that a connection terminal electrically connected to the conduction terminal can be arranged in the terminal space, and a stator. The stator includes a stator core including a yoke and teeth, an electrical insulator attached to the stator core, and a stator winding wound around the stator core via the electrical insulator. The tooth includes a tooth base portion and a tooth tip portion. The electrical insulator includes an outer wall portion disposed at an end portion of the yoke on the first axial side and having an outer top portion that is an end portion of the outer wall portion on the first axial side, a body portion disposed at an end portion of the tooth base portion on the first axial side, and an inner wall portion disposed at an end portion of the tooth tip portion on the first axial side. The connecting member is disposed on the first axial side of the stator. The bottom portion is disposed in a first region on the radially inner side of the outer wall portion and on the second axial side of the outer top portion.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to electric motors and compressors. [Background technology]

[0002] Electric motors mounted on compressors are known. The electric motor has lead wires for electrically connecting to a power supply device, such as an inverter provided in the compressor, and a connecting member disposed at an end of the electric motor on the inverter side. The lead wires are disposed inside the connecting member, and a current-carrying terminal of the inverter is electrically connected to the lead wires inside the connecting member. For example, Patent Document 1 discloses an electric motor in which the connecting member is disposed at the end of the electric motor on the inverter side, utilizing a locked portion formed on the connecting member and a locking portion provided at the end of an electrical insulator of the electric motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-213415 Summary of the Invention [Problem to be solved by the invention]

[0004] In the past, the connecting member was located on the inverter-side end of the electric motor, which could result in the compressor being large in the axial direction. Therefore, technology that can efficiently arrange the connecting member and reduce the compressor size is desired. For example, when the compressor is mounted on a vehicle, this problem becomes particularly pronounced because the space available for arranging the compressor in the vehicle is limited. [Means for solving the problem]

[0005] The present disclosure can be realized in the following forms.

[0006] (1) According to one aspect of the present disclosure, there is provided an electric motor. The electric motor includes a stator having a cylindrical shape extending in an axial direction, and a connection member having sidewalls, a bottom, and a terminal space defined by the sidewalls and the bottom, the connection member being configured so that a connection terminal electrically connected to a current-carrying terminal from a power source can be disposed in the terminal space. The stator includes a stator core including a yoke extending in a circumferential direction and teeth extending radially inward from the yoke, an electrical insulator attached to the stator core, and a stator winding wound around the stator core via the electrical insulator. The teeth include tooth bases extending radially inward from the yoke and tooth tip portions connected to radially inward tips of the tooth bases. The electrical insulator includes an outer wall portion disposed at an end of the yoke on a first axial side, the outer wall portion having an outer apex which is the end of the outer wall portion on the first axial side, a body portion disposed at an end of the tooth base portion on the first axial side, and an inner wall portion disposed at an end of the tooth tip portion on the first axial side. The connection terminal is attached to one end of the stator winding. The connection member is disposed on the first axial side of the stator. The bottom portion is disposed in a first region which is radially inward from the outer wall portion and on the second axial side from the outer apex. With this type of motor, the connecting members can be arranged more efficiently than when the connecting members are arranged on the ends of the motor, which allows the axial length of the motor to be shortened and the compressor to be made smaller. (2) In the electric motor of the above aspect, the stator winding may have a coil portion wound around the stator core via the electrical insulator, and a lead wire portion including one end of the stator winding and connecting the coil portion to the connection terminal. The bottom may be located in a second region of the first region, from an end of the coil portion on a first axial side to the outer apex. According to the electric motor of this configuration, the position of the connecting member is set based on the positional relationship with the coil portion, and the axial length of the electric motor can be made shorter than before. (3) In the electric motor of the above aspect, the bottom portion may be disposed in a third region of the first region, which is an end portion of the inner wall portion on a first axial side, from an inner apex portion to the outer apex portion. According to this form of electric motor, even if a member other than the connecting member is disposed between the inner apex and the outer apex, the axial length of the electric motor can be made shorter than conventional ones. (4) In the electric motor of the above aspect, the outer wall portion may include a longest wall portion having the longest axial length among the outer wall portions, and a shortest wall portion having the shortest axial length among the outer wall portions whose axial length is equal to or longer than the length of the inner wall portion. The bottom portion may be disposed in a fourth region of the third region from the inner apex to a shortest outer apex that is an end portion of the shortest wall portion on the first axial side. According to this form of electric motor, the axial length of the longest wall portion can be set longer than the axial length of a conventional outer wall portion, while the axial length of the electric motor can be made shorter than conventional motors. (5) In the electric motor of the above aspect, the bottom portion may be disposed at a position where it contacts the inner top portion. According to this configuration of the electric motor, the axial length of the electric motor can be further reduced compared to when the connecting members are arranged on the ends of the electric motor. (6) In the electric motor of the above aspect, the stator winding may have a coil portion wound around the stator core via the electrical insulator, and a lead wire portion including one end of the stator winding and connecting the coil portion to the connection terminal. At least a portion of the lead wire portion may be disposed radially outward from the outer wall portion. According to the electric motor of this aspect, the area in which the connecting member can be arranged can be expanded in the area radially inward from the outer wall portion and on the second axial side from the outer apex portion. (7) In the electric motor of the above aspect, the outer wall portion may have a groove portion in which the lead wire portion is disposed on a radially outer wall surface of the outer wall portion. According to the electric motor of this configuration, the lead wire portion can be easily arranged radially outward from the outer wall portion. (8) The electric motor of the above aspect may further include a support member connected to the connecting member. The support member may be configured to contact a plurality of locations of the electrical insulator disposed on a first axial side of the stator. In this type of electric motor, the support member allows the connection member to be supported on the electrical insulator via a plurality of contact points, thereby allowing the connection member to be stably disposed on the stator. (9) In the electric motor of the above aspect, the support member may include an outer peripheral wall portion connected to the connecting member and extending in a circumferential direction. The outer peripheral wall portion may be disposed radially outward of the outer wall portion and facing a radially outer wall surface of the outer wall portion. According to this embodiment of the electric motor, the outer wall of the electrical insulator can be protected by the support member. Furthermore, by supporting the support member on the electrical insulator, rattle of the connecting member and the support member can be suppressed or prevented. (10) In the electric motor of the above aspect, the support member may include a first locking portion, and the electrical insulator may include a second locking portion configured to be locked with the first locking portion. According to the electric motor of this configuration, movement of the support member relative to the electrical insulator can be restricted, and the connecting member and the support member can be stably disposed on the stator. (11) In the electric motor of the above aspect, the support member may include an outer peripheral wall portion connected to the connecting member and extending in the circumferential direction, and an outer peripheral wall flange portion protruding radially inward from the outer peripheral wall portion and extending in the circumferential direction. The first engaging portion may include at least a portion of the outer peripheral wall flange portion. The second engaging portion may include a base portion protruding from the outer apex portion to a first axial side, and a claw portion protruding radially outward from the base portion. At least a portion of the outer peripheral wall flange portion may be engaged between the claw portion and the outer apex portion. According to the electric motor of this aspect, by making the second locking portion a snap fit type, the first locking portion and the second locking portion can be locked together in a simple manner. (12) In the electric motor of the above aspect, the first locking portion may include a protrusion that protrudes radially outward from the support member. The second locking portion may be formed on a radially inner wall surface of the outer wall portion and include a recess or a through hole that corresponds to the protrusion. The protrusion may be configured to be locked with the recess or the through hole. According to the electric motor of this aspect, the first and second locking portions can be locked together on the second axial side of the outer apex, thereby simplifying the configuration of the electric motor on the first axial side. (13) In the electric motor of the above aspect, the support member may include an outer peripheral wall portion connected to the connecting member and extending in a circumferential direction. The outer peripheral wall portion may include an outer peripheral wall flange portion that protrudes radially inward and extends in a circumferential direction. The outer wall portion may have a mating portion having a convex or concave shape. The outer peripheral wall flange portion may have a mated portion having a convex or concave shape corresponding to the mating portion. According to the electric motor of this configuration, movement of the outer peripheral wall portion can be restricted, and the connecting member and the supporting member can be stably disposed on the stator. (14) In the electric motor of the above aspect, the support member may be connected to the connecting member and may include an inner circumferential wall portion extending in a circumferential direction, and at least a portion of the inner circumferential wall portion may be configured to contact an inner apex portion that is an end portion of the inner wall portion on a first axial side. According to the electric motor of this configuration, movement of the inner peripheral portion of the support member can be restricted, and the connecting member and the support member can be stably disposed on the stator. (15) In the electric motor of the above aspect, the stator winding may have a coil portion wound around the stator core with the electrical insulator interposed therebetween, and a lead wire portion including one end of the stator winding and connecting the coil portion to the connection terminal. The support member may have a lead wire accommodating portion configured to guide the lead wire portion to the connection member. According to the electric motor of this configuration, the lead wire portions of the stator winding can be stably arranged on the stator by the support member. (16) In the electric motor of the above aspect, the stator winding may further include a connection portion including the other end of the stator winding and constituting a neutral point of the Y-connected stator winding. The support member may further include a connection terminal accommodating portion configured to be able to accommodate a connection terminal for connecting the other end of the stator winding to a neutral point. According to the electric motor of this configuration, the support member allows the wire connection portion to be stably disposed on the stator. (17) In the electric motor of the above aspect, the stator winding may have a coil portion wound around the stator core via the electrical insulator, and a lead wire portion including one end of the stator winding and connecting the coil portion to the connection terminal. The support member may have a lead wire accommodating portion configured to guide the lead wire portion to the connection member. The electric motor may further include a cover member. The cover member may include an opening for inserting the current-carrying terminal, and may include a connection member lid portion arranged to face the bottom, and a lead wire lid portion configured to face the lead wire accommodating portion. According to the electric motor of this configuration, the connection terminals arranged on the connection member and the lead wire portions arranged in the lead wire accommodating portions can be protected from the outside air and the like. (18) In the electric motor of the above aspect, the cover member may further include an inclined portion between the opening and the lead wire cover portion, the inclined portion being inclined at a predetermined angle with respect to the bottom portion. The angle may be 15 degrees or more and 45 degrees or less. According to the electric motor of this configuration, problems that occur when the cover member and the connecting member are laser-welded can be suppressed or prevented. (19) In the electric motor of the above aspect, the electric motor may be a motor used in a compressor mounted on a vehicle. (20) According to another aspect of the present disclosure, there is provided a compressor including a compression mechanism that compresses and delivers a fluid and an electric motor that drives the compression mechanism. This compressor may include the electric motor according to any of the above aspects as the electric motor. The present disclosure can also be realized in various forms other than electric motors and compressors, such as a connecting member, a support member having a connecting member, a stator, a method for manufacturing a stator, a method for arranging a connecting member, a method for manufacturing an electric motor, a method for manufacturing a compressor, a method for manufacturing a connecting member, a method for manufacturing a support member having a connecting member, etc. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is an explanatory diagram showing the internal structure of a compressor including a motor according to the first embodiment. [Figure 2] FIG. 1 is an explanatory diagram showing the configuration of a motor according to a first embodiment of the present disclosure. [Figure 3] FIG. 2 is an exploded perspective view showing the configuration of each part of the motor. [Figure 4] FIG. [Figure 5] 5 is a cross-sectional view of the VV position shown in FIG. 4. [Figure 6] FIG. 2 is a perspective view showing the external configuration of an electrical insulator. [Figure 7] FIG. 4 is a plan view showing the configuration of a connecting member and a supporting member. [Figure 8] FIG. 4 is a perspective view showing the configuration of a connecting member and a supporting member. [Figure 9] FIG. 4 is an explanatory diagram showing a method of arranging lead wire portions and wire connections of a stator winding. [Figure 10] FIG. [Figure 11] FIG. 10 is an explanatory diagram showing a connection part in which a neutral point is connected using a connection terminal. [Figure 12] FIG. [Figure 13] 13 is a cross-sectional view taken along the line XIII-XIII in FIG. 12. [Figure 14] FIG. 4 is a perspective view showing the configuration of a second axial side of the support member. [Figure 15] 8 is a cross-sectional view taken along the line XV-XV in FIG. 7 . [Figure 16] 16 is a cross-sectional view taken along the line XVI-XVI in FIG. 2. [Figure 17] FIG. 4 is a perspective view showing the external configuration of a cover member. [Figure 18] FIG. [Figure 19] 10A and 10B are explanatory diagrams showing modified examples of the arrangement position of the connecting member. [Figure 20] FIG. 10 is an explanatory diagram showing the configuration of a motor according to a second embodiment. [Figure 21] FIG. 10 is an exploded perspective view showing the configuration of each part of a motor according to a second embodiment. [Figure 22] FIG. 10 is a plan view of a motor according to a second embodiment. [Figure 23] FIG. 2 is an explanatory diagram showing the configuration of an electrical insulator. [Figure 24] FIG. 4 is an explanatory diagram showing the configuration of a support member. [Figure 25] 23 is a cross-sectional view taken along the line XXV-XXV in FIG. 22. [Figure 26] FIG. 4 is an explanatory diagram showing the configuration of a cover member. [Figure 27] FIG. 4 is a perspective view showing the configuration of a second axial side of the support member. [Figure 28] 23 is a cross-sectional view taken along the line XXVIII-XXVIII of FIG. 22. [Figure 29] FIG. 10 is an explanatory diagram showing the configuration of a motor according to a third embodiment of the present disclosure. [Figure 30] FIG. 4 is a perspective view showing the configuration of a second axial side of the support member. [Figure 31] FIG. 2 is an explanatory diagram showing a side configuration of an electrical insulator. [Figure 32] 30 is a cross-sectional view taken along the line XXXII-XXXII of FIG. 29. [Figure 33] FIG. 10 is an exploded perspective view showing the configuration of a stator of a motor according to another embodiment. [Figure 34] FIG. 10 is an exploded perspective view showing the configuration of a stator of a motor according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] A. First embodiment: A1. Compressor 300 configuration: 1 is an explanatory diagram showing the internal structure of a compressor 300 including a motor 310 according to a first embodiment of the present disclosure. The compressor 300 is, for example, a scroll-type electric compressor. The compressor 300 is mounted, for example, on a vehicle (not shown) and is provided in a refrigerant circuit of a vehicle air conditioner together with an evaporator, an expansion valve, a condenser, and the like. The compressor 300 draws in, compresses, and discharges the refrigerant of the vehicle air conditioner.

[0009] 1, compressor 300 includes housing 301, motor 310, compression mechanism 320 that compresses and discharges fluid, drive shaft 330, and power supply circuit 340. Housing 301 accommodates motor 310 and compression mechanism 320. Housing 301 is formed with motor chamber 303 in which motor 310 is disposed, and discharge port 305.

[0010] The motor chamber 303 is connected to, for example, an evaporator via a suction port (not shown). Refrigerant supplied from the evaporator flows into the motor chamber 303 via the suction port. The discharge port 305 discharges the high-pressure refrigerant compressed by the compression mechanism 320 to the outside of the compressor 300. The discharge port 305 is connected to, for example, a condenser (not shown).

[0011] The drive shaft 330 is a substantially cylindrical member extending along the rotation axis AX. The drive shaft 330 is supported in the housing 301 so as to be rotatable about the rotation axis AX. An eccentric pin 332 having a substantially cylindrical shape is formed on the end of the drive shaft 330. The eccentric pin 332 is positioned at a position offset a predetermined distance from the rotation axis AX.

[0012] The power supply circuit 340 is, for example, an inverter configured to drive the motor 310. The power supply circuit 340 converts DC current supplied from a battery mounted on the vehicle as a power source into AC current, and supplies the converted AC current to the motor 310. In this embodiment, a three-phase AC current is supplied to the motor 310.

[0013] The power supply circuit 340 has a current-carrying terminal 342. The current-carrying terminal 342 is electrically connected to the connection terminal 94 of the stator 100 disposed inside the connection member 52. As a result, the power supply circuit 340 is electrically connected to the motor 310.

[0014] The motor 310 generates a driving force that rotates the drive shaft 330 around the rotation axis AX. The motor 310 is an example of an "electric motor." In this embodiment, an example will be described in which the motor 310 is an inner rotor type. The motor 310 has a stator 100 having a substantially cylindrical shape and a rotor 200. Note that the motor 310 may also be an outer rotor type.

[0015] The stator 100 is fixed to the motor chamber 303. The stator 100 rotates the rotor 200 by utilizing a magnetic field generated by an alternating current supplied from a power supply circuit 340.

[0016] The rotor 200 is disposed inside the stator 100 and is rotatable relative to the stator 100. The rotor 200 includes a cylindrical rotor core 24, a magnet 22 fixed inside the rotor core 24, and a drive shaft 330 fixed to the center of the rotor core 24. The rotor core 24 is formed by laminating iron core pieces formed from electromagnetic steel sheets. The magnet 22 is a permanent magnet containing, for example, neodymium, iron, and boron. The magnet 22 has a long, flat plate shape that extends along the axial direction of the rotor core 24. Rotation of the rotor 200 causes the drive shaft 330 to rotate about the rotation axis AX.

[0017] The compression mechanism 320 includes a fixed scroll 322 and a movable scroll 324. The movable scroll 324 is connected to the drive shaft 330 via an eccentric pin 332. The fixed scroll 322 is fixed to the housing 301. A communication passage 304 is formed in the fixed scroll 322. The fixed scroll 322 and the movable scroll 324 each include a wall surface arranged in a spiral shape, and the spiral wall surfaces are arranged so as to mesh with each other. As a result, a compression chamber capable of compressing a refrigerant is formed between the fixed scroll 322 and the movable scroll 324. When the motor 310 is operated and the drive shaft 330 rotates around the rotation axis AX, the movable scroll 324 rotates, and the refrigerant in the compression chamber is compressed. The compressed refrigerant is discharged from the compression mechanism 320 through the communication passage 304 to the discharge port 305.

[0018] A2. Motor 310 configuration: Fig. 2 is an explanatory diagram showing the configuration of a motor 310 according to the first embodiment of the present disclosure. The motor 310 includes a stator 100, a rotor 200, and a connecting member 52. Note that in each of the figures including Fig. 2, the rotor 200 is omitted from illustration to facilitate understanding of the technology.

[0019] Each figure, including FIG. 2, schematically illustrates three directions used in this disclosure. The "axial direction DZ" refers to the axial direction of the rotational axis AX of the rotor 200. The side of the axial direction DZ where the power supply circuit 340 is disposed relative to the motor 310 is defined as the "first axial side Z1," and the opposite side is defined as the "second axial side Z2." When the motor 310 is disposed with the rotational axis AX aligned vertically, the first axial side Z1 may also be referred to as the "upper side," and the second axial side Z2 may also be referred to as the "lower side." The "circumferential direction DX" refers to the circumferential direction centered on the rotational axis AX. When viewing the motor 310 from the first axial side Z1 in the circumferential direction DX, the counterclockwise direction is defined as the "first circumferential side X1," and the clockwise direction is defined as the "second circumferential side X2." The "radial direction DY" is a direction that passes through the rotational axis AX and is perpendicular to the rotational axis AX. The radial direction DY refers to the radial direction centered on the rotation axis AX. In the radial direction DY, the side of the rotation axis AX with respect to a predetermined reference position is defined as the "radially inner side Y2," and the opposite side is defined as the "radially outer side Y1."

[0020] The connection member 52 is disposed on the first axial side Z1 of the stator 100. A terminal space 52S is formed in the connection member 52. The current-carrying terminal 342 and the connection terminal 94 are housed in the terminal space 52S, and the current-carrying terminal 342 and the connection terminal 94 are electrically connected to each other. The terminal space 52S is an example of a "terminal space." In this embodiment, the connection member 52 is configured as a housing, also known as a cluster housing, that has a plurality of terminal spaces 52S that can house a plurality of connection terminals 94 corresponding to three-phase AC.

[0021] 2, in this embodiment, the connecting member 52 is connected to the support member 50. The support member 50 is configured to fix or stably support the connecting member 52 relative to the stator 100, as will be described later.

[0022] Fig. 3 is an exploded perspective view showing the configuration of each part of the motor 310. As shown in Fig. 3, in this embodiment, the motor 310 further includes a cover member 40. As will be described later, the cover member 40 is disposed on the first axial side Z1 of the support member 50, and protects at least a portion of the support member 50 and the connecting member 52. The cover member 40 has an opening 42 formed therein for inserting the energizing terminal 342 into the terminal space 52S.

[0023] A3. Stator 100 configuration: Fig. 4 is an explanatory diagram showing the configuration of a stator 100. The stator 100 includes a stator core 80, electrical insulators 70, and a stator winding 90. In Fig. 4, the stator winding 90 is not shown to facilitate understanding of the technology.

[0024] Fig. 5 is a cross-sectional view taken along the VV position shown in Fig. 4. The stator core 80 is formed by laminating multiple electromagnetic steel sheets. As shown in Fig. 5, the stator core 80 has a yoke 82 extending in the circumferential direction DX and multiple teeth 84 extending from the inner peripheral surface of the yoke 82 toward the radially inward direction Y2.

[0025] The teeth 84 extend from the inner circumferential surface of the yoke 82 on the radially inner side Y2 toward the radially inner side Y2. The teeth 84 are arranged so as to be spaced apart from one another along the circumferential direction DX. The teeth 84 include tooth bases 842 and tooth tip portions 844.

[0026] The tooth bases 842 extend from the inner circumferential surface of the yoke 82 on the radially inner side Y2 toward the radially inner side Y2. The tooth tip portions 844 are connected to the tips of the tooth bases 842 on the radially inner side Y2. As shown in Fig. 5, the tooth tip portions 844 include a first flange portion 844F1 extending from the tip of the tooth base 842 toward the first circumferential side X1, and a second flange portion 844F2 extending from the tip of the tooth base 842 toward the second circumferential side X2. A tip surface 844W of the tooth tip portions 844 on the radially inner side Y2 faces the rotor 200 and defines a space in which the rotor 200 is rotatably disposed.

[0027] Slots SL are defined by teeth 84 adjacent in the circumferential direction DX. For example, in the concentrated winding method, needles are inserted into the slots SL from inside the electrical insulators 70, and the inserted needles are moved to wind the stator windings 90 around the teeth 84 via the electrical insulators 70. In this embodiment, the stator windings 90 are Y-connected (also called "star-connected"). Note that methods of winding the stator windings 90 around the teeth 84 can include winding the stator windings 90 around the teeth 84 with the electrical insulators 70 already attached, or attaching the electrical insulators 70 with the stator windings 90 already wound around them to the teeth 84.

[0028] In the present disclosure, the stator winding 90 wound around the teeth 84 is also referred to as the "coil portion." The portion of the stator winding 90 that connects the coil portion to the connection terminal 94 is also referred to as the "lead portion." The lead portion includes one end of the stator winding 90 to which the connection terminal 94 is attached. The portion of the stator winding 90 that forms the neutral point of the Y-connected stator winding 90 is also referred to as the "connection portion." The connection portion includes the other end of the stator winding 90. In other words, the one end of the stator winding 90 that is not wound around the teeth 84 forms the lead portion, and the other end of the stator winding 90 that is not wound around the teeth 84 forms the connection portion.

[0029] A4. Composition of electrical insulator 70: FIG. 6 is a perspective view showing the external configuration of the electrical insulator 70. The electrical insulator 70 is formed from a resin having insulating properties, such as polyethylene sulfide (PPS), syndiotactic polystyrene (SPS), polybutylene terephthalate (PBT), or liquid crystal polymer (LCP). The electrical insulator 70 is configured to cover the stator core 80 to electrically insulate the stator winding 90 from the stator core 80. The electrical insulator 70 is also sometimes called a "resin bobbin." As shown in FIG. 6, the electrical insulator 70 includes a first insulating portion 71, a second insulating portion 72, and a third insulating portion 73.

[0030] In this embodiment, the electrical insulator 70 is formed by insert molding. Specifically, the electrical insulator 70 is formed by introducing a resin material into a mold with the stator core 80 disposed therein, and then hardening the resin material. As a result, the electrical insulator 70 is formed with the stator core 80 disposed therein and with the first insulating portion 71, the second insulating portion 72, and the third insulating portion 73 integrated together.

[0031] The second insulating portion 72 is disposed on the second axial side Z2 of the stator core 80. The second insulating portion 72 includes a second outer wall portion 722, a second body portion 724, and a second inner wall portion726.

[0032] The second outer wall portion 722 is disposed at the end of the yoke 82 on the second axial side Z2. The second outer wall portion 722 is a plate-shaped member extending toward the second axial side Z2.

[0033] The second inner wall portion 726 is disposed at the end of the tooth tip portion 844 on the second axial side Z2. The second inner wall portion 726 is a plate-like member extending toward the second axial side Z2, and is disposed so as to face the second outer wall portion 722. The shape of the second inner wall portion 726 is substantially the same as the shape of the first inner wall portion 716.

[0034] The second body portion 724 is disposed at the end of the tooth base 842 on the second axial side Z2. The second body portion 724 extends along the radial direction DY and connects the second outer wall portion 722 and the second inner wall portion 726. The second body portion 724 electrically insulates the end of the stator core 80 on the second axial side Z2 from the stator winding 90.

[0035] The third insulating portion 73 is connected between the first insulating portion 71 and the second insulating portion 72. The third insulating portion 73 includes an inner wall portion 732, a side wall portion 734, and a tip portion 736. The inner wall portion 732 is disposed to face the inner circumferential surface of the yoke 82 and covers the inner circumferential surface of the yoke 82. The side wall portion 734 is disposed to face the side surface of the tooth base 842 on the first circumferential side X1 and the side surface of the tooth base 842 on the second circumferential side X2 and covers the side surface of the tooth base 842 on the first circumferential side X1 and the side surface of the tooth base 842 on the second circumferential side X2. The tip portion 736 is positioned to face the inner circumferential surface of the radially outer side Y1 of the first flange portion 844F1 and the inner circumferential surface of the radially outer side Y1 of the second flange portion 844F2, and covers the inner circumferential surface of the radially outer side Y1 of the first flange portion 844F1 and the inner circumferential surface of the radially outer side Y1 of the second flange portion 844F2.

[0036] The first insulating portion 71 is disposed on a first axial side Z1 of the stator core 80. The first insulating portion 71 includes a first outer wall portion 712, a first body portion 714, and a first inner wall portion 716. The first insulating portion 71 includes a plurality of first body portions 714 and a plurality of first inner wall portions 716 corresponding to the number of the teeth 84.

[0037] The first inner wall portion 716 is disposed at the end of the tooth tip portion 844 on the first axial side Z1. The first inner wall portion 716 is a plate-like member extending toward the first axial side Z1, and is configured to face the first outer wall portion 712. The first inner wall portion 716 is an example of an "inner wall portion."

[0038] In the present embodiment, the first inner wall portions 716 all have the same length in the axial direction DZ. Of the ends of the first inner wall portion 716 on the first axial side Z1, the end of the first inner wall portion 716 with the longest length in the axial direction DZ is also referred to as the "inner top portion 716T." Note that, in a case where the first insulating portion 71 has multiple first inner wall portions 716 with different lengths in the axial direction DZ, the "inner top portion 716T" refers to the end of the first inner wall portion 716 that contacts the bottom portion 528 of the support member 50 (described later) and has the longest length in the axial direction DZ.

[0039] The first body portion 714 is disposed at the end of the tooth base portion 842 on the first axial side Z1. The first body portion 714 extends along the radial direction DY and connects the first outer wall portion 712 and the first inner wall portion 716. The first body portion 714 electrically insulates the end of the stator core 80 on the first axial side Z1 from the stator winding 90. The first body portion 714 is an example of a "body portion."

[0040] The first outer wall portion 712 is disposed at an end of the yoke 82 on the first axial side Z1. The first outer wall portion 712 is an example of an "outer wall portion." The first outer wall portion 712 extends along the circumferential direction DX and has a generally annular shape in plan view. However, the first outer wall portion 712 may have a shape other than annular, such as a shape in which a portion of the first outer wall portion 712 is cut out or a shape in which the first outer wall portion 712 is divided into multiple pieces.

[0041] The first outer wall portion 712 includes multiple wall portions with different lengths in the axial direction DZ. Specifically, the first outer wall portion 712 includes a bottom wall portion 712B, a shortest wall portion 712S, an intermediate wall portion 712M, and a longest wall portion 712L. Note that the "length in the axial direction DZ" refers to the length from the end on the second axial side Z2 to the end on the first axial side Z1 when the first outer wall portion 712 is disposed on the motor 310. The end of the first outer wall portion 712 with the longest axial direction DZ length is also referred to as the "outer peak portion 712T." In the present disclosure, the "length in the axial direction DZ" may also be referred to as the "height."

[0042] The longest wall portion 712L is the portion of the first outer wall portion 712 that has the longest length in the axial direction DZ. The length of the longest wall portion 712L in the axial direction DZ is longer than the length of the inner peak portion 716T in the axial direction DZ. In this embodiment, the outer peak portion 712T is the end portion of the longest wall portion 712L on the first axial side Z1.

[0043] The shortest wall portion 712S is the portion of the first outer wall portion 712 whose length in the axial direction DZ is equal to or greater than the length of the first inner wall portion 716 in the axial direction DZ, that is the portion having the shortest length in the axial direction DZ.

[0044] The bottom wall portion 712B is a portion of the first outer wall portion 712 whose length in the axial direction DZ is shorter than the length of the first inner wall portion 716. The bottom wall portion 712B may be formed to have multiple heights, provided that it is lower than the first inner wall portion 716.

[0045] The intermediate wall portion 712M is longer than the length of the shortest wall portion 712S in the axial direction DZ and shorter than the length of the longest wall portion 712L in the axial direction DZ. The length of the intermediate wall portion 712M in the axial direction DZ is equal to or greater than the length of the first inner wall portion 716. A plurality of intermediate wall portions 712M having different heights may be formed, provided that they are higher than the shortest wall portion 712S and lower than the longest wall portion 712L.

[0046] A groove 712R is formed along the circumferential direction DX on the wall surface on the radially outer side Y1 of the first outer wall portion 712, i.e., on the outer peripheral surface 712W of the first outer wall portion 712. The width and depth of the groove 712R correspond to the width and height of one lead wire portion that constitutes the stator winding 90. One lead wire portion is housed in the groove 712R.

[0047] The number of grooves 712R is set based on the wiring paths of the lead wire portions formed in the stator 100. In this embodiment, the maximum number of grooves 712R arranged in the axial direction DZ is three, and they are formed on the outer peripheral surface 712W of the longest wall portion 712L so as to be equidistant and parallel to each other. The three grooves 712R accommodate lead wire portions corresponding to the U phase, V phase, and W phase, respectively. Two grooves 712R are formed on the outer peripheral surface 712W of the middle wall portion 712M, and one groove 712R is formed on the outer peripheral surface 712W of the shortest wall portion 712S.

[0048] The grooves 712R electrically insulate the lead wire portions arranged in the grooves 712R from other conductive components, including lead wire portions and coil portions arranged in other grooves 712R. The radial length DY of the grooves 712R (the depth of the grooves 712R) is preferably deep to improve insulation. Furthermore, the distance between adjacent grooves 712R is preferably long to improve insulation. By arranging the lead wire portions in the grooves 712R, it is possible to omit insulating materials, such as insulating tubes, that have been used in the past to cover the lead wire portions and electrically insulate them from other conductive components. Therefore, the lead wire portions can be electrically insulated with a simpler configuration than in the past. Furthermore, the number of components in the stator 100 can be reduced. Furthermore, by omitting the insulating material, the area on the first insulating portion 71 where the connecting member 52 and the support member 50 can be arranged can be expanded.

[0049] One end of the stator winding 90 is guided from the coil portion to the radially outer side Y1 of the first outer wall portion 712 and accommodated in a groove 712R in the outer circumferential surface 712W. The one end of the stator winding 90 arranged in the groove 712R is part of a "lead wire portion." The stator winding 90 is arranged in the groove 712R according to a predetermined wiring path. The lead wire portion arranged in the groove 712R is led to a first axial side Z1 of the support member 50, as will be described later.

[0050] In this way, in the motor 310 of the present embodiment, by arranging the stator winding 90 in the groove 712R formed in the outer peripheral surface 712W of the first outer wall portion 712, it is possible to suppress or prevent the lead wire portion from being arranged radially inward Y2 from the first outer wall portion 712. Therefore, it is possible to expand the area radially inward Y2 from the first outer wall portion 712 in which components such as the connecting member 52 and the support member 50 can be arranged. This makes it possible, for example, to easily arrange the bottom portion 528 of the connecting member 52 in a region closer to the second axial side Z2 than the outer top portion 712T.

[0051] 6, in this embodiment, the first insulating portion 71 further includes a flange portion 719. The flange portion 719 is a plate-shaped member extending from an end portion of the first outer wall portion 712 on the second axial side Z2 to the radially outer side Y1. That is, the flange portion 719 is formed on the radially outer side Y1 of the outer peripheral surface 712W of the first outer wall portion 712. The flange portion 719 is disposed to face the end portion of the yoke 82 on the radially outer side Y1. As will be described later, the flange portion 719 supports the outer peripheral wall portion 56 included in the support member 50.

[0052] In this embodiment, the flange portion 719 has a generally annular shape extending in the circumferential direction DX, and is formed around the entire outer periphery of the first insulating portion 71. However, the flange portion 719 may have a shape other than annular. For example, a portion of the flange portion 719 may be cut out. A plurality of flange portions 719 may be formed on the outer periphery of the first insulating portion 71.

[0053] In this embodiment, the first insulating portion 71 further includes a locking portion 718. As will be described later, the locking portion 718 is configured to lock the support member 50 and the first insulating portion 71 together. The locking portion 718 is an example of a "second locking portion." In this embodiment, the locking portion 718 has the function of locking the support member 50 to the first insulating portion 71. Note that the locking portion 718 may be configured to lock the connecting member 52 and the first insulating portion 71 together, instead of or together with the support member 50.

[0054] As shown in Fig. 6, in this embodiment, the locking portion 718 is formed on the outer apex 712T of the first outer wall portion 712. In the example of Fig. 6, the locking portion 718 is formed on four outer apexes 712T that are spaced approximately equally apart from one another. However, the number of locking portions 718 is not limited to four, and may be one, or any number of two or more.

[0055] A5. Configuration of the connecting member 52 and the supporting member 50: The configurations of the connecting member 52 and the supporting member 50 included in the motor 310 according to this embodiment will be described with reference to Figs. 7 to 16. Fig. 7 is a plan view showing the configurations of the connecting member 52 and the supporting member 50. Fig. 8 is a perspective view showing the configurations of the connecting member 52 and the supporting member 50. The connecting member 52 and the supporting member 50 can be formed using the same material as the electrical insulator 70, for example.

[0056] 7 and 8, the connecting member 52 has a bottom 528 and a plurality of side wall portions 526 extending from the bottom portion 528 to the first axial side Z1. The bottom portion 528 is a wall surface on the second axial side Z2 of the connecting member 52. An inclined portion 526T inclined at a predetermined angle with respect to the bottom portion 528 is formed on the first axial side Z1 of the side wall portion 526.

[0057] A terminal space 52S is defined by a plurality of sidewall portions 526 and a bottom portion 528. In this embodiment, the terminal space 52S includes three terminal spaces 521, 522, and 523 corresponding to the U-phase lead wire portion, the V-phase lead wire portion, and the W-phase lead wire portion, respectively.

[0058] As shown in FIGS. 7 and 8 , the support member 50 is a structure connected to the connection member 52. As will be described later, the support member 50 is configured to contact the stator 100 (more specifically, the first insulating portion 71) at multiple locations, thereby fixing or stably supporting the connection member 52 to the stator 100. In this embodiment, the support member 50 is integrally formed with the connection member 52 by resin molding or the like. Note that the support member 50 and the connection member 52 may be formed separately from each other and then connected by any method, such as welding, adhesive bonding, or joining. The support member 50 includes a beam member 54, a lead wire accommodating portion 55, an outer peripheral wall portion 56, an inner peripheral wall portion 58, and a wiring terminal accommodating portion 59.

[0059] The beam member 54 connects the connecting member 52 to at least one of the members of the support member 50. In this embodiment, the beam member 54 connects the connecting member 52 to the lead wire accommodating portion 55, the outer peripheral wall portion 56, the inner peripheral wall portion 58, and the wiring terminal accommodating portion 59. The connecting member 52 and the member of the support member 50 that contacts the stator 100 are connected to each other via the beam member 54, so that the connecting member 52 can be fixed or stably supported relative to the stator 100 using the support member 50. Note that the beam member 54 may be omitted when the connecting member 52 is directly supported by the stator 100, for example.

[0060] In this embodiment, the beam member 54 includes a first beam member 541 extending in the radial direction DY and a second beam member 542 extending in the circumferential direction DX. The beam member 54 is formed into a lattice shape by the first beam member 541 and the second beam member 542, and has openings 543. By forming the openings 543, the flow rate of the coolant passing through the motor 310 can be improved. In addition, the amount of material required to form the support member 50 can be reduced.

[0061] 7 and 8 as well as Fig. 9 to Fig. 11, the configuration of the lead wire accommodating portion 55 and the connection terminal accommodating portion 59 will be described. Fig. 9 is an explanatory diagram showing the arrangement of the lead wire portions and connection portions of the stator winding 90.

[0062] 7 to 9, lead wire accommodating portion 55 accommodates lead wire portions drawn out from stator 100. Lead wire accommodating portion 55 suppresses or prevents electrical short-circuiting between the lead wire portions and other members, such as coil portions or other lead wire portions. Lead wire accommodating portion 55 also connects connecting member 52 to outer peripheral wall portion 56, inner peripheral wall portion 58, and connection terminal accommodating portion 59 of support member 50, and also functions as beam member 54.

[0063] 9 shows U-phase lead wire portion 91p, V-phase lead wire portion 92p, and W-phase lead wire portion 93p. A connection terminal 94 is attached to the tip of lead wire portions 91p, 92p, and 93p for connection to current-carrying terminal 342 of power supply circuit 340. In the following description, when lead wire portions 91p, 92p, and 93p are not to be distinguished from one another, they will be collectively referred to as "lead wire portion 90p."

[0064] 7 to 9, the lead wire accommodating portion 55 includes introduction holes 551H, 552H, 553H and grooves 551, 552, 553. The introduction holes 551H, 552H, 553H are through holes for guiding the lead wire portions 91p, 92p, 93p from the stator 100 to the first axial side Z1 of the support member 50. The introduction holes 551H, 552H, 553H are in communication with the terminal spaces 521, 522, 523 of the connection member 52, respectively, via the grooves 551, 552, 553.

[0065] The lead wire portions 91p, 92p, and 93p, guided to the first axial side Z1 of the support member 50 through the introduction holes 551H, 552H, and 553H, are accommodated in the grooves 551, 552, and 553. The lead wire portions arranged in the grooves 551, 552, and 553 of the lead wire accommodating portion 55 are electrically insulated from other conductive components, including lead wire portions and coil portions arranged in other grooves. The length of the lead wire accommodating portion 55 in the axial direction DZ (the depth of the grooves 551, 552, and 553) is preferably deep from the viewpoint of improving insulation. Furthermore, the distance between adjacent grooves is preferably long from the viewpoint of improving insulation. By arranging the lead wire portions in the grooves 551, 552, and 553 of the lead wire accommodating portion 55, it is possible to omit an insulating material for covering the lead wire portions and electrically insulating them from other conductive components. Therefore, the lead wire portions can be electrically insulated with a simpler configuration than conventional configurations. Connection terminals 94 attached to the ends of the lead wire portions 91p, 92p, and 93p are disposed in the terminal spaces 521, 522, and 523, respectively.

[0066] As shown in FIG. 9, the connection terminal accommodating portion 59 includes an introduction hole 590, grooves 591, 592, and 593, and a recess 594. FIG. 9 also shows a U-phase connection portion 91q, a V-phase connection portion 92q, and a W-phase connection portion 93q, which are the other ends of the stator winding 90. The connection portions 91q, 92q, and 93q are electrically connected to form a neutral point. The connection to form the neutral point is also referred to as a "neutral point connection." In the following description, when there is no need to distinguish between the connection portions 91q, 92q, and 93q, they will be collectively referred to as "connection portion 90q."

[0067] The introduction hole 590 is a through-hole for guiding the wire connection portions 91q, 92q, and 93q from the stator 100 to the first axial side Z1 of the support member 50. The introduction hole 590 is in communication with the groove portions 591, 592, and 593. The wire connection portions 91q, 92q, and 93q that have been guided to the first axial side Z1 of the support member 50 via the introduction hole 590 are housed in the groove portions 591, 592, and 593 after passing through the recessed portion 594. The wire connection portions 91q, 92q, and 93q arranged in the recessed portion 594 are neutral-connected by the connection terminal 60.

[0068] The grooves 591, 592, and 593 electrically insulate the lead wire portion disposed in any one of the grooves 591, 592, and 593 from other conductive components, including lead wire portions and coil portions, disposed in the other grooves. The length of the grooves 591, 592, and 593 in the axial direction DZ (the depth of the grooves 591, 592, and 593) is preferably deep to improve insulation. Furthermore, the distance between adjacent grooves 591, 592, and 593 is preferably long to improve insulation. By disposing the lead wire portion in the grooves 591, 592, and 593, it is possible to omit an insulating material that would cover the lead wire portion and electrically insulate it from other conductive components. Therefore, the lead wire portion can be electrically insulated with a simpler configuration than conventional configurations.

[0069] 10 is a perspective view showing the configuration of the wiring terminal 60. The wiring terminal 60 is also called a magmate terminal. The wiring terminal 60 has a main body 64 and terminal insertion portions 61, 62, and 63. The terminal insertion portions 61, 62, and 63 are slits formed in the main body 64, and the wiring portions 91q, 92q, and 93q are inserted through the terminal insertion portions 61, 62, and 63.

[0070] FIG. 11 is an explanatory diagram showing the connection portions 91q, 92q, and 93q connected to a neutral point using the connection terminal 60. As shown in FIG. 11, the connection terminal 60 is inserted into the recess 594 with the connection portions 91q, 92q, and 93q positioned in the grooves 591, 592, and 593 via the recess 594. When the connection terminal 60 is inserted into the recess 594, the connection portions 91q, 92q, and 93q are inserted into the terminal insertion portions 61, 62, and 63. The connection terminal 60 is deformed by the pressure applied during insertion and penetrates the insulating coating formed on the surfaces of the connection portions 91q, 92q, and 93q. As a result, the connection portions 91q, 92q, and 93q are electrically connected to the neutral point via the connection terminal 60. A neutral point can be formed by a simple method using the connection terminal 60. Furthermore, by arranging the neutral point in the connection terminal accommodating portion 59 of the support member 50, the connection portions 91q, 92q, and 93q can be fixed to the stator 100 or arranged in a stable state.

[0071] 8, 12, and 13, a specific configuration of the outer peripheral wall portion 56 will be described. Fig. 12 is a perspective view showing the configuration of the outer peripheral wall portion 56. As shown in Fig. 12, the outer peripheral wall portion 56 includes a main body 560, an outer peripheral wall flange portion 562, and an outer wall protrusion portion 564.

[0072] As shown in FIG. 8, the main body 560 is a plate-like member extending in the circumferential direction DX. The surface direction of the main body 560 is configured to be approximately parallel to the axial direction DZ. The main body 560 is disposed around the entire periphery of the peripheral edge portion of the support member 50 on the radially outer side Y1. That is, in this embodiment, the main body 560 has a substantially annular shape. However, the main body 560 does not have to be annular, and for example, a portion of the main body 560 may be cut out. Furthermore, a plurality of main bodies 560 may be formed and disposed at a plurality of locations on the peripheral edge portion of the support member 50 on the radially outer side Y1.

[0073] The main body 560 is connected to the connecting member 52 via the beam member 54. The main body 560 may also be directly connected to the connecting member 52. In this way, "connected to the connecting member 52" can include a state in which a member included in the support member 50 is directly connected to the connecting member 52, and a state in which a member included in the support member 50 is indirectly connected to the connecting member 52 via another member included in the support member 50, such as the beam member 54.

[0074] The main body 560 is disposed radially outward (Y1) from the first outer wall portion 712 of the first insulating portion 71. The inner circumferential surface of the main body 560 on the radially inner side (Y2) faces the outer circumferential surface 712W of the first outer wall portion 712. In other words, the main body 560 is disposed so as to cover the outer circumferential surface 712W. This configuration can electrically insulate the lead wire portion 90p disposed in the groove portion 712R of the outer circumferential surface 712W from other conductive components. Specifically, it is possible to suppress or prevent an electrical short circuit or flashover between the lead wire portion 90p and conductive components of the compressor 300, such as the wall surface of the motor chamber 303, or other conductive components of the motor 310.

[0075] 12, the outer peripheral wall flange 562 is connected to an end face of the main body 560 on the first axial side Z1. The outer peripheral wall flange 562 protrudes radially inward Y2 from the main body 560 and extends along the circumferential direction DX. The outer peripheral wall flange 562 is configured to protrude further toward the first axial side Z1 than other portions of the main body 560.

[0076] Fig. 13 is a cross-sectional view taken along the line XIII-XIII in Fig. 12. In this embodiment, the outer peripheral wall portion 56 is configured to contact the end portion on the first axial side Z1 of the first insulating portion 71. More specifically, the outer peripheral wall portion 56 is configured to contact the outer apex portion 712T of the longest wall portion 712L of the first insulating portion 71 and the flange portion 719.

[0077] 13, an end portion 56B of the outer peripheral wall portion 56 on the second axial side Z2 of the main body 560 is configured to contact an end portion on the first axial side Z1 of the flange portion 719. With this configuration, the peripheral edge portion on the radially outer side Y1 of the support member 50 can be supported by the first insulating portion 71. Therefore, movement of the support member 50 in the axial direction DZ is restricted, and the connecting member 52 and the support member 50 can be stably disposed in the stator 100.

[0078] 13, the outer peripheral wall flange 562 extends radially inward Y2 on the first axial side Z1 beyond the outer apex 712T. The wall surface of the outer peripheral wall flange 562 on the second axial side Z2 is configured to contact the outer apex 712T of the longest wall portion 712L. This configuration allows the peripheral edge portion of the support member 50 on the radially outer side Y1 to be supported by the first insulating portion 71. This restricts movement of the support member 50 in the axial direction DZ, allowing the connecting member 52 and the support member 50 to be stably disposed in the stator 100.

[0079] As shown in Fig. 13, the outer peripheral wall flange 562 is configured to be further locked with the locking portion 718 of the first insulating portion 71. The outer peripheral wall flange 562 is an example of a "first locking portion." The locking portion 718 is a so-called snap-fit ​​structure. The locking portion 718 includes a base portion 718B and a claw portion 718N.

[0080] The base 718B protrudes from the outer apex 712T toward the first axial side Z1. The claws 718N protrude from the tip of the base 718B toward the radially outward side Y1. When assembling the support member 50 to the first insulating part 71, the outer peripheral wall flange 562 is moved toward the outer apex 712T. The outer peripheral wall flange 562 contacts the base 718B, and the base 718B bends radially inward Y2 due to its elasticity. When the outer peripheral wall flange 562 is moved to a position where it contacts the outer apex 712T, the base 718B returns to its initial position, and the outer peripheral wall flange 562 is engaged between the outer apex 712T and the claws 718N. In this way, by engaging the outer wall flange portion 562 with the engaging portion 718, axial movement DZ and radial movement DY of the main body 560 relative to the first insulating portion 71 are restricted, and the connecting member 52 and the support member 50 can be positioned in the stator 100 in a stable state.

[0081] 12, the outer wall protrusion 564 protrudes from an end of the main body 560 on the first axial side Z1 toward the radially inner side Y2. The outer wall protrusion 564 is formed on the wall surface of the main body 560 on the radially inner side Y2, extending along the circumferential direction DX. The outer wall protrusion 564 is configured to be flush with the end face of the main body 560 on the first axial side Z1. Note that the end face of the main body 560 on the first axial side Z1 is configured to be flush with the outer apex 712T of the longest wall portion 712L.

[0082] Of the first outer wall portion 712, one longest wall portion 712L is defined as a first longest wall portion 712L1, and the longest wall portion 712L adjacent to the first longest wall portion 712L1 on the first circumferential side X1 is defined as a second longest wall portion 712L2. An outer wall recess 712V having a recessed shape on the second axial side Z2 is defined between the first longest wall portion 712L1 and the second longest wall portion 712L2. The width of the outer wall protrusion 564 in the circumferential direction DX corresponds to the width of the outer wall recess 712V in the circumferential direction DX. Therefore, the outer wall protrusion 564 is configured to be able to fit into the outer wall recess 712V while contacting the first outer wall portion 712. By fitting the outer wall protrusion 564 into the outer wall recess 712V, movement of the support member 50 in the circumferential direction DX is restricted, and the connecting member 52 and the support member 50 can be stably arranged in the stator 100.

[0083] The specific configuration of the inner circumferential wall portion 58 will be described with reference to Fig. 8 as well as Fig. 14 and Fig. 15. Fig. 14 is a perspective view showing the configuration of the second axial side Z2 of the support member 50. Fig. 15 is a cross-sectional view taken along the line XV-XV shown in Fig. 7.

[0084] 8 and 14, the inner peripheral wall portion 58 is a plate-like member extending in the circumferential direction DX. The surface direction of the inner peripheral wall portion 58 is configured to be approximately parallel to the axial direction DZ. The inner peripheral wall portion 58 is connected to the connection member 52, the lead wire accommodating portion 55, and the wiring terminal accommodating portion 59, and is also connected to the outer peripheral wall portion 56 via the beam member 54.

[0085] 14 and 15 , an end 58B of the inner circumferential wall portion 58 on the second axial side Z2 is configured to be flush with the bottom 528 of the connecting member 52 and the bottom 59B of the wiring terminal accommodating portion 59. The inner circumferential wall portion 58 is arranged around the entire periphery of the radially inner side Y2 of the support member 50, excluding the areas where the connecting member 52 and the wiring terminal accommodating portion 59 are formed. Note that the inner circumferential wall portion 58 does not have to be formed around the entire periphery of the radially inner side Y2. For example, a portion of the inner circumferential wall portion 58 may be cut out. Furthermore, a plurality of inner circumferential wall portions 58 may be formed at multiple locations around the periphery of the radially inner side Y2 of the support member 50.

[0086] In the present embodiment, the end portion 58B of the inner peripheral wall portion 58 on the second axial side Z2 is disposed so as to contact the inner apex portion 716T of the first inner wall portion 716, as will be described later. With this configuration, the inner peripheral edge portion of the support member 50 on the radially inner side Y2 can be supported by the first insulating portion 71. Therefore, movement of the support member 50 in the axial direction DZ is restricted, and the connecting member 52 and the support member 50 can be disposed in a stable state in the stator 100. Note that the entire end portion 58B does not have to contact the inner apex portion 716T, and only a portion of the end portion 58B may contact the inner apex portion 716T.

[0087] A6. Arrangement of connecting member 52: The arrangement of the connecting member 52 will be described with reference to FIG. 16 . FIG. 16 is a cross-sectional view taken along line XVI-XVI in FIG. 2 . As shown in FIG. 16 , the connecting member 52 is configured to be disposed radially inward (Y2) from the first outer wall portion 712. This makes it easier to dispose the connecting member 52 on the second axial side (Z2) from the outer apex 712T of the first insulating portion 71. Note that “radially inward (Y2) from the first outer wall portion 712” refers to a position radially inward (Y2) from the wall surface of the first outer wall portion 712 on the radially inward (Y2) side. In the following description, when referring to the position of the bottom 528 of the connecting member 52, the wall surface of the bottom 528 on the second axial side (Z2) may also be simply referred to as the “bottom 528.” When referring to the position of the bottom 59B of the wiring terminal accommodating portion 59, the wall surface of the bottom 59B on the second axial side (Z2) may also be simply referred to as the “bottom 59B.”

[0088] In the present embodiment, the lead wire portion 90p is disposed in the groove portion 712R, which is located on the radially outer side Y1 of the first outer wall portion 712, instead of on the radially inner side Y2 of the first outer wall portion 712. This forms a region for disposing the connecting member 52 in a region that is radially inner Y2 of the first outer wall portion 712 and closer to the second axial side Z2 than the outer apex 712T. With the motor 310 configured in this manner, it is easy to dispose the connecting member 52 on the second axial side Z2 than the outer apex 712T in a region that is radially inner Y2 of the first outer wall portion 712. Therefore, the length of the motor 310 in the axial direction DZ can be shortened compared to when the connecting member 52 is disposed on the end of the first insulating portion 71 on the first axial side Z1.

[0089] In this embodiment, the bottom portion 528 of the connecting member 52 is fixed in a state lowered to a position where it contacts the inner apex 716T of the first inner wall portion 716. Therefore, the length of the motor 310 in the axial direction DZ can be significantly reduced compared to when the bottom portion 528 is positioned closer to the first axial side Z1 than the outer apex 712T of the first insulating portion 71.

[0090] As described above, the bottom 528 of the connection member 52 is configured to be flush with the end 58B of the inner circumferential wall 58 on the second axial side Z2 and the bottom 59B of the wiring terminal accommodating portion 59. Therefore, by positioning the bottom 528 of the connection member 52 at a position where it contacts the inner top 716T of the first inner wall 716, the connection member 52 can be supported on the electrical insulator 70 via multiple contact points including the end 58B of the inner circumferential wall 58 and the bottom 59B of the wiring terminal accommodating portion 59. Therefore, the connection member 52 can be positioned on the electrical insulator 70 in a more stable state.

[0091] A7. Configuration of cover member 40: The configuration of the cover member 40 will be described with reference to Figures 17 and 18. Figure 17 is a perspective view showing the exterior configuration of the cover member 40. The cover member 40 is arranged on the first axial side Z1 of at least a portion of the support member 50 and the connection member 52. The cover member 40 protects the lead wire portions 90p arranged in the terminal space 52S of the connection member 52, the lead wire portions 90p arranged in the groove portions 551, 552, and 553, and the connection portion 90q arranged in the connection terminal accommodating portion 59 from the outside air and the like. The cover member 40 also electrically insulates the lead wire portions 90p and the connection portion 90q from other components of the compressor 300 and the motor 310.

[0092] The cover member 40 is joined to the connection member 52 and the support member 50, for example, in a state in which the lead wire portion 90p and the wire connection portion 90q are arranged. The cover member 40 is joined to the connection member 52 and the support member 50 by, for example, welding or adhesive. In this embodiment, the cover member 40 is joined to the connection member 52 and the support member 50 by laser welding. The cover member 40 includes a first lid portion 44, a second lid portion 46, and a third lid portion 48.

[0093] The third lid portion 48 is disposed on the first axial side Z1 of the wiring terminal housing portion 59. The third lid portion 48 protects the wiring terminals 91q, 92q, 93q and the wiring terminals 60 disposed in the wiring terminal housing portion 59. The third lid portion 48 functions as a "wiring terminal lid portion."

[0094] The second lid portion 46 is disposed on the first axial side Z1 of the lead wire accommodating portion 55. The second lid portion 46 has a generally flat plate shape and is disposed opposite the lead wire accommodating portion 55. The second lid portion 46 protects the lead wire portions 91p, 92p, and 93p accommodated in the groove portions 551, 552, and 553. The second lid portion 46 is an example of a "lead wire lid portion."

[0095] The first lid portion 44 is disposed on the first axial side Z1 of the connecting member 52. The first lid portion 44 is disposed to correspond to the bottom portion 528 of the connecting member 52, and covers the first axial side Z1 of the terminal spaces 521, 522, 523. The first lid portion 44 is an example of a "connecting member lid portion."

[0096] An opening 42 for inserting the energized terminal 342 into the terminal space 52S is formed in the first lid portion 44. In this embodiment, the opening 42 includes openings 421, 422, and 423 corresponding to the grooves 551, 552, and 553, respectively. The energized terminals 342 corresponding to the lead wire portions 91p, 92p, and 93p, respectively, are inserted into the openings 421, 422, and 423.

[0097] In this embodiment, the first lid portion 44 is formed with an inclined portion 442. The inclined portion 442 is formed between the openings 421, 422, 423 in the first lid portion 44 and the second lid portion 46. The shape of the inclined portion 442 corresponds to the shape of the inclined portion 526T of the side wall portion 526. Specifically, the inclined portion 442 is configured to be inclined at a predetermined angle with respect to the bottom portion 528, similar to the inclined portion 526T.

[0098] FIG. 18 is a side view of the cover member 40. More specifically, FIG. 18 shows the cover member 40 as viewed from the radially outer side Y1 toward the radially inner side Y2, as indicated by the arrow FC in FIG. 17. FIG. 18 also shows an imaginary line 528L including the surface direction of the bottom portion 528 of the connecting member 52, and an inclination angle R1 of the inclined portion 442 relative to the imaginary line 528L. The inclination angle R1 can be set arbitrarily. In this embodiment, the inclination angle R1 is predetermined to be an angle convenient for laser welding.

[0099] 18, for ease of understanding the technology, a laser oscillator LC that performs laser welding on the cover member 40 and a laser beam LS emitted from the laser oscillator LC are schematically shown. The laser oscillator LC is disposed, for example, on the first axial side Z1 relative to the connecting member 52, the supporting member 50, and the cover member 40, and irradiates the laser beam LS toward the boundary between the connecting member 52 and the supporting member 50 and the cover member 40. As a result, the connecting member 52 and the supporting member 50 are joined to the cover member 40.

[0100] In Fig. 18, the configuration of a cover member not including the inclined portion 442 is shown by dashed lines as a comparative example. When the inclined portion 442 is not formed, for example, as shown in Fig. 18, the first lid portion 44 includes a wall surface 442R having a substantially rectangular shape between the opening 42 and the second lid portion 46. In the example of Fig. 18, the wall surface 442R is, for example, substantially parallel to the axial direction DZ. In this case, the angle between the emission direction of the laser light LS and the surface direction of the wall surface 442R becomes small, which may make it difficult to irradiate the laser light LS over the entire wall surface 442R. Therefore, problems may occur in laser welding between the wall surface 442R and the connecting member 52.

[0101] In contrast, in this embodiment, the inclination angle R1 of the inclined portion 442 with respect to the bottom portion 528 is configured to be approximately 30 degrees. This makes it possible to increase the angle between the emission direction of the laser light LS and the inclined portion 442. This makes it easier to irradiate the laser light LS emitted from the laser oscillator LC over the entire inclined portion 442. As a result, defects in laser welding between the connecting member 52 and the cover member 40 can be suppressed or prevented.

[0102] The inclination angle R1 is not limited to 30 degrees and may be set within any angle range suitable for laser welding. However, setting the inclination angle R1 to 15 degrees or greater shortens the distance between the first cover portion 44 and the second cover portion 46, thereby suppressing or preventing the connecting member 52 and the support member 50 from becoming large in the circumferential direction DX or the radial direction DY. Setting the inclination angle R1 to an angle greater than 45 degrees reduces the angle between the emission direction of the laser light LS and the surface direction of the wall surface 442R, making it difficult to irradiate the laser light LS over the entire wall surface 442R. In this case, it is preferable to join the cover member 40 to the connecting member 52 and the support member 50 by a method other than laser welding. For these reasons, it is preferable to set the inclination angle R1 to, for example, 15 degrees or greater and 45 degrees or less.

[0103] A8.Effects: As described above, according to the motor 310 of this embodiment, the bottom 528 of the connecting member 52 is disposed at a position where it contacts the inner apex 716T of the first inner wall portion 716. The connecting member 52 can be disposed on the second axial side Z2 of the outer apex 712T. Therefore, compared to the conventional case in which the connecting member 52 is disposed on the first axial side Z1 of the outer apex 712T of the first insulating portion 71, the connecting member 52 can be disposed more efficiently, and the length of the motor 310 in the axial direction DZ can be shortened. Furthermore, the length of the motor chamber 303 of the compressor 300 in the axial direction DZ can be shortened, allowing the compressor 300 to be made more compact.

[0104] According to the motor 310 of this embodiment, as shown in FIG. 15 , the end 58B of the inner circumferential wall 58, the bottom 528 of the connecting member 52, and the bottom 59B of the wiring terminal accommodating portion 59 are configured to be flush with one another. The end 58B of the inner circumferential wall 58, the bottom 528 of the connecting member 52, and the bottom 59B of the wiring terminal accommodating portion 59 are configured to contact the inner top portion 716T. The connecting member 52 can be supported on the electrical insulator 70 via multiple contact points, including the end 58B of the inner circumferential wall 58 and the bottom 59B of the wiring terminal accommodating portion 59. This allows the connecting member 52 to be stably positioned on the electrical insulator 70, thereby reducing or preventing rattling of the connecting member 52. For example, even in an environment where the compressor 300 and motor 310 mounted thereon are prone to vibration, such as in a vehicle, vibration can be reduced or prevented, thereby reducing or preventing malfunctions of the motor 310 caused by vibration, such as components of the motor 310 falling off due to vibration.

[0105] According to the motor 310 of this embodiment, the lead wire portion 90p is disposed radially outward (Y1) from the first outer wall portion 712. This allows for an expanded area in which the connecting member 52 can be disposed, in an area radially inward (Y2) from the first outer wall portion 712 and on the second axial side (Z2) from the outer apex portion 712T. This makes it easier to dispose the connecting member 52 in an area on the second axial side (Z2) from the outer apex portion 712T.

[0106] According to the motor 310 of this embodiment, the first outer wall portion 712 has a groove portion 712R for arranging the lead wire portion 90p on the wall surface 442R of the first outer wall portion 712 on the radially outer side Y1. This facilitates the task of arranging the lead wire portion 90p on the radially outer side Y1 of the first outer wall portion 712. Furthermore, by arranging the lead wire portion 90p in the groove portion 712R, the lead wire portions 90p of each phase can be electrically insulated from each other with a simpler configuration than in an embodiment in which the lead wire portions 90p include an insulating material. Furthermore, by omitting the insulating material, the number of parts of the stator 100 can be reduced and the area on the first insulating portion 71 in which the connecting member 52 can be arranged can be expanded.

[0107] The motor 310 of this embodiment includes a support member 50 connected to the connecting member 52. The support member 50 is configured to come into contact with a plurality of points on the axial first side Z1 of the stator 100. By using the support member 50, the connecting member 52 can be supported on the electrical insulator 70 via a plurality of contact points. Therefore, the connecting member 52 can be arranged on the electrical insulator 70 in a more stable state.

[0108] According to the motor 310 of this embodiment, the support member 50 is connected to the connecting member 52 and includes an outer peripheral wall portion 56 extending in the circumferential direction DX. The outer peripheral wall portion 56 is disposed radially outward (Y1) from the first outer wall portion 712 and faces the wall surface 442R of the first outer wall portion 712 on the radially outward (Y1) side. This allows the lead wire portion 90p disposed on the outer peripheral surface 712W to be electrically insulated from other conductive components. This reduces or prevents electrical short circuits and flashovers between the lead wire portion 90p and conductive components of the compressor 300, such as the wall surface of the motor chamber 303, or other conductive components of the motor 310.

[0109] According to the motor 310 of this embodiment, the outer peripheral wall portion 56 has an outer wall protrusion 564 that protrudes radially inward Y2 and extends in the circumferential direction DX. The first outer wall portion 712 has an outer wall recess 712V that can fit into the outer wall protrusion 564. The fit between the outer wall protrusion 564 and the outer wall recess 712V restricts movement of the main body 560 in the circumferential direction DX, allowing the connecting member 52 and the support member 50 to be stably disposed in the stator 100. Therefore, rattle in the circumferential direction DX in the connecting member 52 and the support member 50 is suppressed, and malfunctions of the motor 310 caused by vibration can be suppressed or prevented.

[0110] According to the motor 310 of this embodiment, the first outer wall portion 712 includes a locking portion 718 configured to lock with the outer peripheral wall portion 56. The locking of the outer peripheral wall portion 56 with the locking portion 718 restricts movement of the main body 560 in the axial direction DZ and the radial direction DY, allowing the connecting member 52 and the support member 50 to be stably disposed in the electrical insulator 70. This reduces rattle in the connecting member 52 and the support member 50 in the axial direction DZ and the radial direction DY, and reduces or prevents malfunctions of the motor 310 caused by vibration.

[0111] According to the motor 310 of this embodiment, the outer peripheral wall portion 56 includes an outer peripheral wall flange portion 562 that protrudes radially inward (Y2) and extends in the circumferential direction (DX). The outer peripheral wall flange portion 562 is engaged between the claw portion 718N and the outer apex portion 712T. By providing the engaging portion 718 with a snap fit, the outer peripheral wall flange portion 562 and the engaging portion 718 can be engaged with each other in a simple manner.

[0112] According to the motor 310 of this embodiment, the end 58B of the inner circumferential wall portion 58 is configured to contact the inner top portion 716T of the inner wall portion 732. With this configuration, the peripheral edge portion of the support member 50 on the radially inner side Y2 is supported by the first insulating portion 71. Therefore, rattle in the axial direction DZ at the inner circumferential edge portion of the support member 50 is suppressed, and malfunctions of the motor 310 caused by vibration can be suppressed or prevented.

[0113] Furthermore, according to the motor 310 of this embodiment, the end 56B of the outer peripheral wall 56 is configured to contact the flange 719 on the outer peripheral edge of the first insulating part 71. With this configuration, the peripheral edge of the support member 50 on the radially outer side Y1 is supported by the first insulating part 71. Therefore, rattle in the axial direction DZ at the outer peripheral edge of the support member 50 is suppressed, and malfunctions of the motor 310 caused by vibration can be suppressed or prevented.

[0114] According to the motor 310 of this embodiment, the inner and outer peripheral edges of the support member 50 are supported by the first insulating portion 71. That is, the entire support member 50 is configured to be supported by the first insulating portion 71. Therefore, rattle in the axial direction DZ of the support member 50 can be further suppressed, and malfunctions of the motor 310 caused by vibration can be further suppressed or more reliably prevented.

[0115] According to the motor 310 of this embodiment, the support member 50 includes a lead wire accommodating portion 55 configured to guide the lead wire portion 90p to the connection member 52. Therefore, the support member 50 allows the lead wire portion 90p to be stably arranged on the stator 100.

[0116] According to the motor 310 of this embodiment, the support member 50 includes a connection terminal accommodating portion 59 that is connected to the connecting member 52 and the support member 50 and is configured to be able to accommodate a connection terminal 60 for connecting the other end of the stator winding 90 to a neutral point. The connection terminal 60 and the neutral-point-connected connection portion 90q are supported by the support member 50. Therefore, the connection portion 90q can be stably supported on the stator 100.

[0117] The motor 310 of this embodiment includes a cover member 40. The cover member 40 includes an opening 42 for inserting the power terminal 342 and includes a first lid portion 44 arranged to face the bottom portion 528 and a second lid portion 46 configured to face the lead wire accommodating portion 55. The cover member 40 can protect the lead wire portions 90p and the wire connection portions 90q arranged on the support member 50 and the connecting member 52 from the outside air, etc. It can suppress or prevent electrical short-circuiting between the lead wire portions 90p and the wire connection portions 90q and other components of the compressor 300 and the motor 310. Furthermore, by configuring the cover member 40 as a separate member from the support member 50, it becomes easy to arrange the lead wire portions 90p and the wire connection portions 90q on the support member 50.

[0118] According to the motor 310 of this embodiment, the first lid portion 44 has an inclined portion 526T between the opening 42 and the second lid portion 46, which is inclined at an inclination angle R1 of approximately 30 degrees relative to the bottom portion 528. Therefore, problems that may occur when the cover member 40 and the connecting member 52 are laser welded together can be suppressed or prevented.

[0119] A9. Variations: In the first embodiment described above, an example was shown in which the bottom 528 of the connecting member 52 was positioned in contact with the inner apex 716T of the first inner wall portion 716. However, the bottom 528 of the connecting member 52 may be positioned in a position other than the position in contact with the inner apex 716T. The position of the bottom 528 of the connecting member 52 can be fixed at any position, for example, as long as at least a portion of the connecting member 52 or the support member 50 connected to the connecting member 52 is supported by the electrical insulator 70.

[0120] Fig. 19 is an explanatory diagram showing a modified example of the arrangement position of the connecting member 52. Fig. 19 schematically shows the cross-sectional configuration of the stator 100 on the first axial side Z1. Note that the configuration of each part shown in Fig. 19 is shown in a simplified manner and does not accurately show the dimensions and shapes of each part.

[0121] 19 , the bottom 528 of the connecting member 52 may be disposed at any position in a first region H1 that is, for example, in a region W1 radially inward Y2 from the first outer wall portion 712 and that is on the second axial side Z2 from the outer apex 712T. With this configuration of the motor 310, the connecting member 52 can be disposed on the second axial side Z2 from the outer apex 712T. Therefore, the length of the motor 310 in the axial direction DZ can be shortened compared to a conventional case in which the connecting member 52 is disposed in a region HR that is on the first axial side Z1 from the outer apex 712T of the first insulating portion 71.

[0122] 19, the bottom 528 of the connecting member 52 may be disposed in a second region H2 of the first region H1, from the end 90T on the first axial side Z1 of the coil portion to the outer apex 712T. In this case, the position of the bottom 528 can be set based on its relative position with respect to the coil portion, regardless of the position of the inner apex 716T. For example, even if the end 90T on the first axial side Z1 of the coil portion is disposed closer to the first axial side Z1 than the inner apex 716T, the length of the motor 310 in the axial direction DZ can be shortened compared to conventional motors.

[0123] 19, the end 90T of the coil portion on the first axial side Z1 is positioned closer to the second axial side Z2 than the inner apex 716T. In this case, the bottom 528 may be positioned in a region H2S of the second region H2 that extends from the end 90T of the coil portion on the first axial side Z1 to the inner apex 716T. With the motor 310 configured in this manner, the length of the motor 310 in the axial direction DZ can be further shortened.

[0124] 19, the bottom 528 of the connecting member 52 may be disposed in a third region H3 from the inner apex 716T to the outer apex 712T. Even when a member other than the connecting member 52 is disposed between the inner apex 716T and the outer apex 712T, the length of the motor 310 in the axial direction DZ can be shortened compared to conventional motors while disposing the other member. For example, this applies to a case where the end 90T on the first axial side Z1 of the coil portion is disposed closer to the first axial side Z1 than the inner apex 716T.

[0125] In the example of FIG. 19 , the first outer wall portion 712 includes a longest wall portion 712L and a shortest wall portion 712S. The end of the shortest wall portion 712S on the first axial side Z1 is defined as the “shortest outer apex 712ST.” In this case, the bottom portion 528 may be disposed in the fourth region H4 from the inner apex 716T to the shortest outer apex 712ST. Even in this case, the length of the axial direction DZ of the motor 310 can be shortened. Furthermore, assuming that the outer apex 712T is located closer to the second axial side Z2 than the end of the connecting member 52 on the first axial side Z1, the length of the longest wall portion 712L in the axial direction DZ can be set longer than, for example, the length of the axial direction DZ of the conventional first outer wall portion 712. In this case, it is easy to arrange the lead wire portion 90p on the outer circumferential surface 712W.

[0126] B. Second embodiment: B1. Motor 310b and stator 100b configuration: FIG. 20 is an explanatory diagram showing the configuration of a motor 310b according to a second embodiment of the present disclosure. FIG. 21 is an exploded perspective view showing the configuration of each part of the motor 310b according to the second embodiment. FIG. 22 is a plan view of the motor 310b according to the second embodiment. Note that in FIGS. 20 to 22, the rotor 200 is omitted from illustration to facilitate understanding of the technology. In the above-described first embodiment, the motor 310 including the stator 100 in which the stator windings 90 are Y-connected has been described as an example. In contrast, the motor 310b according to this embodiment includes a stator 100b in which the stator windings 90 are delta-connected.

[0127] 20 to 22, motor 310b differs from motor 310 of the first embodiment in that it includes a stator 100b instead of stator 100, a support member 50b instead of support member 50, and a cover member 40b instead of cover member 40, but other configurations are similar to motor 310 of the first embodiment. Stator 100b differs from stator 100 shown in the first embodiment in that stator winding 90 is delta-connected instead of Y-connected and in that electrical insulator 70b is provided instead of electrical insulator 70, but other configurations are similar to stator 100 shown in the first embodiment.

[0128] B2. Composition of electrical insulator 70b: 23 is an explanatory diagram showing the configuration of an electrical insulator 70b. The electrical insulator 70b differs from the electrical insulator 70 shown in the first embodiment in that it includes a first insulating portion 71b instead of the first insulating portion 71, but otherwise has the same configuration as the electrical insulator 70. The first insulating portion 71b differs from the first insulating portion 71 in that it includes a first outer wall portion 712b instead of the first outer wall portion 712.

[0129] The first outer wall portion 712b has a configuration similar to that of the first outer wall portion 712 in that it includes a bottom wall portion 712B, a shortest wall portion 712S, and a longest wall portion 712L. The first outer wall portion 712b differs in that it includes two types of intermediate wall portions 712M1 and 712M2 that differ in length in the axial direction DZ, instead of the intermediate wall portion 712M. In this way, the first insulating portion 71b may include multiple types of intermediate wall portions 712M that differ in length in the axial direction DZ.

[0130] In the first embodiment, an example was shown in which the maximum number of grooves 712R formed in the axial direction DZ on the outer peripheral surface 712W of the longest wall portion 712L is three. In contrast to this, in the present embodiment, four grooves 712R are formed in the axial direction DZ on the outer peripheral surface 712W of the longest wall portion 712L. Note that the four grooves 712R include one groove 712R corresponding to one of the lead wire portions 90p of the U phase, V phase, and W phase (W phase in this embodiment) in addition to one lead wire portion 90p each for the U phase, V phase, and W phase to form a wiring path corresponding to a delta connection.

[0131] In the first embodiment described above, an example was shown in which the locking portion 718 was formed on the outer apex 712T of the first outer wall portion 712. In contrast to this, in the present embodiment, a protrusion 713 is formed on the first outer wall portion 712b instead of the locking portion 718. Note that the protrusion 713 is formed not only on the outer apex 712T but also on the end portion of the intermediate wall portion 712M1 on the first axial side Z1.

[0132] As will be described later, the protrusion 713 is configured to fit into an opening 47H formed in the cover member 40 and an opening 56H formed in the support member 50. The protrusion 713 is formed at a position corresponding to the opening 47H and the opening 56H. The protrusion 713 may be formed, for example, not only on the outer top portion 712T or the intermediate wall portion 712M1 but also on the intermediate wall portion 712M2, the shortest wall portion 712S, and the bottom wall portion 712B. The protrusion 713 is an example of a "convex fitting portion." Instead of the protrusion 713, an opening that functions as a "concave fitting portion" may be formed.

[0133] B3. Configuration of support member 50b: 24 is an explanatory diagram showing the configuration of a support member 50b. The support member 50b differs from the support member 50 shown in the first embodiment in that it includes an outer peripheral wall portion 56b instead of the outer peripheral wall portion 56, a lead wire accommodating portion 55b instead of the lead wire accommodating portion 55, and an inner peripheral wall portion 58b instead of the inner peripheral wall portion 58, and does not include a wiring terminal accommodating portion 59. The inner peripheral wall portion 58b differs from the inner peripheral wall portion 58 shown in the first embodiment in that an end portion 58B on the second axial side Z2 does not contact the inner top portion 716T. The inner peripheral wall portion 58b is otherwise similar in configuration to the inner peripheral wall portion 58. The functional configuration of the connecting member 52 is similar to that of the connecting member 52 shown in the first embodiment, and therefore description thereof will be omitted.

[0134] A U-phase lead wire portion 91p, a V-phase lead wire portion 92p, and a W-phase lead wire portion 93p, which include one end of the stator winding 90, are connected to a U-phase lead wire portion 91p2 (not shown), a V-phase lead wire portion 92p2 (not shown), and a W-phase lead wire portion 93p2 (not shown), which are the other end of the stator winding 90. The connected lead wire portions 90p are taken out from the stator 100b to the first axial side Z1 of the support member 50b through an opening 55H in the support member 50b. In this embodiment, the grooves 551, 552, and 553 of the lead wire accommodating portion 55b are arranged with a UV-phase lead wire portion in which the U-phase lead wire portion 91p and the V-phase lead wire portion 92p2 are connected, a VW-phase lead wire portion in which the V-phase lead wire portion 92p and the W-phase lead wire portion 93p2 are connected, and a WU-phase lead wire portion in which the W-phase lead wire portion 93p and the U-phase lead wire portion 91p2 are connected. As in the first embodiment, the lead wire accommodating portion 55b electrically insulates the lead wire portions arranged in the grooves 551, 552, and 553 of the lead wire accommodating portion 55b from other conductive components, including lead wire portions and coil portions, arranged in other grooves. By arranging the lead wire portions in the grooves 551, 552, and 553 of the lead wire accommodating portion 55b, it is possible to omit an insulating material for covering the lead wire portions and electrically insulating them from other conductive components. Therefore, the lead wire portion can be electrically insulated with a simpler configuration than conventionally.

[0135] 25 is a cross-sectional view taken along the line XXV-XXV in FIG. 22. The outer peripheral wall portion 56b includes a main body 560 and an outer peripheral wall flange portion 562b. As shown in FIGS. 24 and 25, the outer peripheral wall portion 56b differs from the outer peripheral wall portion 56 shown in the first embodiment in that it does not include an outer wall protrusion 564 and includes an outer peripheral wall flange portion 562b instead of the outer peripheral wall flange portion 562. Otherwise, the configuration is the same as that of the outer peripheral wall portion 56. In this embodiment, the end portion 56B of the outer peripheral wall portion 56 does not contact the flange portion 719 of the first insulating portion 71, but the end portion 56B may be configured to contact the flange portion 719.

[0136] The outer peripheral wall flange 562b is formed at the end of the main body 560 on the first axial side Z1. As shown in Fig. 24, in this embodiment, the outer peripheral wall flange 562b extends along the circumferential direction DX and is formed around the entire outer peripheral edge of the support member 50b. As shown in Fig. 25, the outer peripheral wall flange 562b is configured to contact the outer top 712T of the longest wall portion 712L.

[0137] An opening 56H is formed in the outer peripheral wall flange 562b. The opening 56H has a shape corresponding to the shape of the protrusion 713 formed on the first outer wall 712b and is configured to fit with the protrusion 713. The protrusion 713 is joined to the opening 56H by, for example, laser welding or thermal welding while fitted into the opening 56H. The fit between the protrusion 713 and the opening 56H restricts movement of the connecting member 52 and the support member 50b in the radial direction DY and the circumferential direction DX. This suppresses rattles in the connecting member 52 and the support member 50b in the radial direction DY and the circumferential direction DX, thereby suppressing or preventing malfunctions of the motor 310 due to vibration. The opening 56H is an example of a "fitted portion having a concave shape corresponding to the fitting portion." Instead of the opening 56H, a protrusion functioning as a "fitted portion having a convex shape corresponding to the fitting portion" may be formed. The fitting between the protrusion 713 and the opening 56H may be a "loose fit" in which a gap is created between the protrusion 713 and the opening 56H, or may be a "tight fit."

[0138] B4. Configuration of cover member 40b: 26 is an explanatory diagram showing the configuration of cover member 40b. Cover member 40b differs from cover member 40 shown in the first embodiment in that it has first lid portion 44b instead of first lid portion 44, does not have third lid portion 48, and further has outer peripheral wall portion 47. Other configurations are the same as those of cover member 40.

[0139] The first lid portion 44b differs from the first lid portion 44 in that it does not include the inclined portion 442. The outer peripheral wall portion 47 has the same function as the outer peripheral wall portion 56b of the support member 50. The outer peripheral wall portion 47 is integrated with the outer peripheral wall portion 56b by joining the cover member 40b and the support member 50b, and functions as a part of the outer peripheral wall portion 56b. The opening portion 47H has the same function as the opening portion 56H. In other words, the opening portion 47H functions as a "fitted portion having a recessed shape corresponding to the fitting portion." The first lid portion 44b may also include the inclined portion 442.

[0140] B5. Configuration of the second axial side Z2 of the support member 50b: 27 is a perspective view showing the configuration of the second axial side Z2 of the support member 50b. The lead wire accommodating portion 55b has a bottom 558 which is the wall surface 442R of the second axial side Z2. As shown in FIG. 27, in this embodiment, instead of the end portion 58B of the inner circumferential wall portion 58b on the second axial side Z2, the bottom 558 of the lead wire accommodating portion 55b is configured to be flush with the bottom 528 of the connecting member 52.

[0141] Figure 28 is a cross-sectional view taken along line XXVIII-XXVIII of Figure 22. As shown in Figure 28, in this embodiment, the bottom 528 of the connecting member 52 is disposed at a position where it contacts the inner top 716T of the first inner wall portion 716. Therefore, according to the motor 310b of this embodiment, as in the first embodiment, the length of the motor 310 in the axial direction DZ can be shortened. Furthermore, the length of the motor chamber 303 of the compressor 300 in the axial direction DZ can be shortened, allowing the compressor 300 to be made more compact.

[0142] 28 , in motor 310b of this embodiment, bottom 558 of lead wire accommodating portion 55b and bottom 528 of connecting member 52 are configured to be flush with each other and are both disposed so as to contact inner top 716T of first inner wall portion 716. Supporting connecting member 52 and support member 50b by first insulating portion 71b restricts movement of connecting member 52 and support member 50b in the axial direction DZ. Therefore, rattle of connecting member 52 and support member 50b in the axial direction DZ is suppressed, and malfunctions of motor 310b caused by vibration can be suppressed or prevented.

[0143] According to the motor 310b of this embodiment, the outer peripheral wall flange 562b of the outer peripheral wall 56b is configured to contact the outer apex 712T of the first insulating portion 71b. With this configuration, the peripheral edge of the support member 50b on the radially outer side Y1 is supported by the first insulating portion 71b. This suppresses wobbling in the axial direction DZ at the outer peripheral edge of the support member 50b, and suppresses or prevents malfunctions of the motor 310b caused by vibration.

[0144] According to the motor 310b of this embodiment, the outer top 712T of the first outer wall portion 712b has a protrusion 713, and the outer peripheral wall flange portion 562b has an opening 56H formed therein that corresponds to the protrusion 713. Therefore, rattles in the radial direction DY and the circumferential direction DX of the connecting member 52 and the support member 50b can be suppressed, and malfunctions of the motor 310 caused by vibrations can be suppressed or prevented.

[0145] C. Third embodiment: The configuration of a motor 310c according to a third embodiment of the present disclosure will be described with reference to Figures 29 to 32. Figure 29 is an explanatory diagram showing the configuration of the motor 310c according to the third embodiment of the present disclosure. As shown in Figure 29, the motor 310c according to the third embodiment differs from the motor 310 according to the first embodiment in that it includes a stator 100c instead of the stator 100, but is otherwise similar in configuration to the motor 310. The stator 100c differs from the stator 100 in that it includes an electrical insulator 70c instead of the electrical insulator 70 and a support member 50c instead of the support member 50.

[0146] FIG. 30 is a perspective view showing the configuration of the second axial side Z2 of the support member 50c. The support member 50c differs from the support member 50 shown in the first embodiment in that it does not include an outer peripheral wall flange portion 562 and further includes a protruding portion 544. As shown in FIG. 30, the protruding portion 544 is formed on the second axial side Z2 of the second beam member 542 of the support member 50c and protrudes from the second beam member 542 toward the radially outward side Y1. The protruding portion 544 is an example of a "first locking portion." Note that, although FIG. 30 shows the support member 50c including a single protruding portion 544, the support member 50c may include two or more protruding portions 544.

[0147] 31 is an explanatory diagram showing the side configuration of an electrical insulator 70c. The electrical insulator 70c differs from the electrical insulator 70 shown in the first embodiment in that it includes a first insulating portion 71c instead of the first insulating portion 71. The first insulating portion 71c differs from the first insulating portion 71 shown in the first embodiment in that a through-hole 717 is formed in the longest wall portion 712L instead of the locking portion 718.

[0148] The through hole 717 penetrates from an outer peripheral surface 712W on the radially outer side Y1 of the first outer wall portion 712 (in the example of FIG. 31 , the bottom surface of the groove portion 712R) to a wall surface on the radially inner side Y2 of the first outer wall portion 712. The through hole 717 has a shape corresponding to the shape of the protrusion 544 and is configured to be engaged with the protrusion 544. The through hole 717 is an example of a “second engaging portion.” The engagement between the through hole 717 and the protrusion 544 restricts movement of the support member 50c in the axial direction DZ and the circumferential direction DX relative to the first insulating portion 71c, allowing the connecting member 52 and the support member 50c to be positioned on the first insulating portion 71c in a stable state. In this embodiment, a slope 712C is formed in the through hole 717 on the first axial side Z1.

[0149] Figure 32 is a cross-sectional view taken along the line XXXII-XXXII in Figure 29. Figure 32 shows a state in which the through-hole 717 and the protrusion 544 are engaged. A slope 712C is formed on the wall surface of the longest wall portion 712L on the radially inner side Y2. The slope 712C is inclined so as to protrude radially inward Y2 as it extends toward the second axial side Z2. As shown in Figure 32, the protrusion 544 includes a base portion 544B and a claw portion 544N.

[0150] The base 544B protrudes from the second beam member 542 toward the second axial side Z2. The claw 544N protrudes from the tip of the base 544B toward the radially outer side Y1. A slope 712C is formed at the tip of the claw 544N. When assembling the support member 50c to the first insulating portion 71c, if the support member 50c is moved toward the first insulating portion 71c, the slope of the claw 544N comes into contact with the slope 712C of the first outer wall portion 712. As the support member 50c moves toward the first insulating portion 71c, the claw 544N is pushed out from the slope 712C toward the second axial side Z2 and is deflected toward the second axial side Z2 due to the elasticity of the second beam member 542. When the movement of the support member 50c toward the second axial side Z2 is completed, the second beam member 542 and the claw portion 544N return to their initial positions and are locked in the through-hole 717.

[0151] According to the motor 310c of this embodiment, a through hole 717 is formed in the radially inner wall surface Y2 of the first outer wall portion 712 of the first insulating portion 71c. The through hole 717 is adapted to engage with the protrusion 544 of the support member 50c. By engaging the first insulating portion 71c with the support member 50c, movement of the support member 50c in the axial direction DZ and the circumferential direction DX relative to the first insulating portion 71c can be restricted. Therefore, the connecting member 52 and the support member 50c can be stably disposed on the stator 100c. Furthermore, by locating the through hole 717 in the wall surface of the first outer wall portion 712 (more specifically, between the end of the first outer wall portion 712 on the first axial side Z1 and the end of the first outer wall portion 712 on the second axial side Z2), the engagement position between the first insulating portion 71c and the support member 50c can be located closer to the second axial side Z2 than the outer peak 712T. Therefore, the outer apex 712T and the end of the support member 50c on the first axial side Z1 can be made flush, and the configuration of the first axial side Z1 of the motor 310c can be made simple with few irregularities.

[0152] The through hole 717 may be formed in the intermediate wall portion 712M or the shortest wall portion 712S instead of or in addition to the longest wall portion 712L. Also, FIG. 31 shows an example in which the first insulating portion 71c has a single through hole 717. However, the first insulating portion 71c may have two or more through holes 717 corresponding to the number of protrusions 544. Also, instead of or in addition to the through hole 717, the first insulating portion 71c may have a recess corresponding to the shape of the protrusion 544 on the wall surface on the radially inner side Y2 of the first outer wall portion 712. The recess corresponding to the shape of the protrusion 544 is an example of a "second locking portion."

[0153] D. Other Embodiments: (D1) In each of the above embodiments, an example was shown in which the electrical insulator 70 of the stator 100 is formed by insert molding, and the first insulating portion 71, the second insulating portion 72, and the third insulating portion 73 are formed in an integrated state, as shown in Fig. 6. However, as in the following example, the electrical insulator possessed by the stator according to the present disclosure is not limited to an electrical insulator in which the first insulating portion 71, the second insulating portion 72, and the third insulating portion 73 are integrated.

[0154] Figure 33 is an exploded perspective view showing the configuration of a stator 100d of a motor 310d according to another embodiment. The stator 100d includes a stator core 80, an electrical insulator 70d, and a stator winding 90. To facilitate understanding of the technology, the rotor 200 and the stator winding 90 are omitted from Figure 33 and Figure 34, which will be described later. The configurations of the stator core 80 and the stator winding 90 are the same as those of the first embodiment, and therefore will not be described here.

[0155] The electrical insulator 70d includes a first insulating portion 71, a second insulating portion 72, and a third insulating portion 73d. The electrical insulator 70d differs from the electrical insulator 70 shown in the first embodiment in that the electrical insulator 70d includes a third insulating portion 73d instead of the third insulating portion 73, but otherwise has the same configuration as the electrical insulator 70.

[0156] The first insulating portion 71, the second insulating portion 72, and the third insulating portion 73d are individually formed by resin molding or the like instead of insert molding, and are configured to be separate from one another. In this embodiment, the electrical insulator 70d is formed by assembling the separate first insulating portion 71, the second insulating portion 72, and the third insulating portion 73d individually to the stator core 80. The shapes, functions, etc. of the first insulating portion 71 and the second insulating portion 72 are the same as those in the first embodiment, so description thereof will be omitted.

[0157] The third insulating portion 73d is a sheet-like or film-like member that is long along the axial direction DZ. The third insulating portion 73 is formed of, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyphenylene sulfide (PPS), polyester, or the like. The function of the third insulating portion 73d is the same as that of the third insulating portion 73 described above.

[0158] When the electrical insulator 70d is assembled to the stator core 80, the first insulating portion 71 is fixed to the first axial side Z1 of the stator core 80, and the second insulating portion 72 is fixed to the second axial side Z2 of the stator core 80. The third insulating portion 73d is inserted into the slot SL of the stator core 80. Once the electrical insulator 70d is assembled to the stator core 80, the stator winding 90 is wound around the stator core 80. A motor 310d having a stator 100d configured in this manner can also achieve the same effects as the above-described embodiments.

[0159] 34 is an exploded perspective view showing the configuration of a stator 100e of a motor 310e according to another embodiment. The stator 100e includes a stator core 80, electrical insulators 70e, and a stator winding 90. The configurations of the stator core 80 and the stator winding 90 are the same as those in the first embodiment, and therefore will not be described further.

[0160] The electrical insulator 70e differs from the electrical insulator 70 shown in the first embodiment in that it has a first insulating portion 71e and a second insulating portion 72e instead of the first insulating portion 71, the second insulating portion 72, and the third insulating portion 73, but otherwise has the same configuration as the electrical insulator 70.

[0161] The first insulating portion 71e includes a first slot insulating portion 715 in addition to the configuration of the first insulating portion 71 described in the first embodiment. The first slot insulating portion 715 extends from the end portion 56B on the first axial side Z1 of the first outer wall portion 712 toward the second axial side Z2. The shape of the first slot insulating portion 715 substantially matches the shapes of the inner wall portion 732, the side wall portion 734, and the tip portion 736 on the first axial side Z1 described in the first embodiment.

[0162] The second insulating portion 72e has the same configuration as the second insulating portion 72 described in the first embodiment, but also includes a second slot insulating portion 725. The second slot insulating portion 725 extends from the end portion 56B on the second axial side Z2 of the second outer wall portion 722 toward the first axial side Z1. The shape of the second slot insulating portion 725 substantially matches the shapes of the inner wall portion 732, the side wall portion 734, and the tip portion 736 on the second axial side Z2.

[0163] As shown in FIG. 34 , when the electrical insulator 70e is assembled to the stator core 80, the first insulating portion 71e is fixed to the first axial side Z1 of the stator core 80 with the first slot insulating portion 715 inserted into the first axial side Z1 of the slot SL. The second insulating portion 72e is fixed to the second axial side Z2 of the stator core 80 with the second slot insulating portion 725 inserted into the second axial side Z2 of the slot SL. The first slot insulating portion 715 and the second slot insulating portion 725 arranged in the slot SL perform the same function as the third insulating portion 73 of the electrical insulator 70 shown in the first embodiment. Once the electrical insulator 70e is assembled to the stator core 80, the stator winding 90 is wound around the stator core 80. A motor 310e having a stator 100e configured in this manner can also achieve the same effects as the above-described embodiments.

[0164] (D2) In the above embodiments, the motor 310 is mounted on a compressor for a vehicle. However, the motor 310 may be mounted on an air conditioner or the like other than a vehicle.

[0165] (D3) In each of the above embodiments, an example was shown in which the motor 310 includes a stator core 80 in which the yoke 82 and the teeth 84 are integrated. However, the stator core 80 may be formed by connecting split cores, which are obtained by dividing the yoke 82 at predetermined intervals in the circumferential direction DX, to each other in an annular shape. The split core includes, for example, a plurality of split yokes and one tooth 84. Alternatively, the stator core 80 may be formed by connecting a plurality of split teeth separated from the yoke 82 to a single annular yoke 82.

[0166] (D4) In the first embodiment, the connection portions 91q, 92q, and 93q are connected to the neutral point by the connection terminal 60. However, the connection portions 91q, 92q, and 93q may be connected to the neutral point by a method other than the connection terminal 60. Examples of methods for connecting the connection portions 91q, 92q, and 93q without using the connection terminal 60 include welding the connection portions 91q, 92q, and 93q to each other or soldering the connection portions 91q, 92q, and 93q. In this case, the recess 594 may contain, for example, a resin material instead of the connection terminal 60. For example, the neutral-connected connection portions 91q, 92q, and 93q may be housed in the recess 594, and a resin material may be introduced into the recess 594 to harden the connection portions 91q, 92q, and 93q. Even in this case, the connection portions 91q, 92q, and 93q can be stably arranged on the stator 100 via the support member 50.

[0167] (D5) In the first embodiment described above, an example was shown in which the end 58B of the inner circumferential wall portion 58, the bottom 528 of the connection member 52, and the bottom 59B of the wiring terminal accommodating portion 59 were configured to be flush with each other. However, the end 58B of the inner circumferential wall portion 58, the bottom 528 of the connection member 52, and the bottom 59B of the wiring terminal accommodating portion 59 may be arranged so as not to be flush with each other.

[0168] (D6) In the first embodiment described above, an example was shown in which the outer peripheral wall portion 56 of the support member 50 is configured to contact the outer apex 712T and the flange portion 719 of the first insulating portion 71, and the inner peripheral wall portion 58 is configured to contact the inner apex 716T. That is, in the first embodiment described above, an example was shown in which the peripheral edge portion of the support member 50 on the radially outer side Y1 and the peripheral edge portion on the radially outer side Y1 are supported by the first insulating portion 71. In contrast, the outer peripheral wall portion 56 may be configured not to contact the outer apex 712T and the flange portion 719 of the first insulating portion 71. The support member 50 may be configured not to include the outer peripheral wall portion 56. Furthermore, the inner circumferential wall portion 58 may be configured not to contact the inner apex 716T. The support member 50 may be configured not to include the inner circumferential wall portion 58.

[0169] (D7) In the first embodiment described above, an example was shown in which the connecting member 52 was connected to the support member 50. However, a configuration may be adopted in which the support member 50 is not provided. In this case, it is preferable that at least a portion of the connecting member 52 is supported by a member included in the stator 100. Even with the motor 310 configured in this manner, the length of the motor 310 in the axial direction DZ can be made shorter than in the conventional motor.

[0170] (D8) In the first embodiment described above, an example was shown in which the height of the first inner wall portion 716, i.e., the position of the inner top portion 716T, was uniform. However, the height of the first inner wall portion 716 may be configured to be non-uniform. In this case, it is preferable that the bottom portion 528 of the connecting member 52 and the bottom portions of each portion of the support member 50 are adjusted to positions corresponding to the height of the first inner wall portion 716. Even with a motor 310 configured in this manner, it is possible to obtain the same effects as in the first embodiment described above.

[0171] The present disclosure is not limited to the above-described embodiments and can be realized in various configurations without departing from the spirit thereof. For example, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted.

[0172] Furthermore, in consideration of the spirit of the present invention and the above-described embodiments and their modifications, the following aspects are established. At least one of the following aspects may be employed alone or in combination with at least one of the motors 310, 310b, 310c, 310d, and 310e of the above-described embodiments, the compressor 300, the modifications, and the features described in the claims. [Aspect 1] the outer peripheral wall portion includes an outer wall protrusion that protrudes radially inward and extends circumferentially, The outer wall portion includes an outer wall recess portion that can be fitted into the outer wall protrusion portion. The outer wall protrusion 564 is an example of an "outer wall protrusion", and the outer wall recess 712V is an example of an "outer wall recess". According to the electric motor of this aspect, the outer wall protrusion and the outer wall recess are fitted together to restrict circumferential movement of the outer peripheral wall, and the connecting member and the supporting member can be stably disposed on the stator. [Explanation of symbols]

[0173] 22...magnet, 24...rotor core, 40, 40b...cover member, 42...opening, 44, 44b...first lid portion, 46...second lid portion, 47...outer peripheral wall portion, 47H...opening, 48...third lid portion, 50, 50b, 50c...support member, 52...connecting member, 52S...terminal space, 54...beam member, 55, 55b...lead wire accommodating portion, 55H...opening, 56, 56b...outer peripheral wall portion, 56B...end portion, 56H...opening, 58, 58b...inner peripheral wall portion, 58B...end portion, 59...wiring terminal accommodating portion, 59B...bottom portion, 60...wiring terminal, 61, 62, 63... Terminal insertion portion, 64... main body, 70, 70b, 70c, 70d, 70e... electrical insulators, 71, 71b, 71c, 71e... first insulating portion, 72, 72e... second insulating portion, 73, 73d... third insulating portion, 80... stator core, 82... yoke, 84... teeth, 90... stator winding, 90T... end portion, 90p, 91p, 91p2, 92p, 92p2, 93p, 93p2... lead wire portion, 90q, 91q, 92q, 93q... connection portion, 94... connection terminal, 100, 100b, 100c, 100d, 100e... stator, 200... rotor , 300... compressor, 301... housing, 303... motor chamber, 304... communication passage, 305... discharge port, 310, 310b, 310c, 310d, 310e... motor, 320... compression mechanism, 322... fixed scroll, 324... movable scroll, 330... drive shaft, 332... eccentric pin, 340... power supply circuit, 342... energizing terminal, 421... opening, 442... inclined portion, 442R... wall surface, 521, 522, 523... terminal space, 526... side wall portion, 526T... inclined portion, 528... bottom, 528L... imaginary line, 541... first beam portion member, 542...second beam member, 543...opening, 544...protrusion, 544B...base, 544N...claw portion, 551, 552, 553...groove portion, 551H, 552H, 553H...inlet hole, 558...bottom, 560...main body, 562, 562b...peripheral wall flange portion, 564...outer wall convex portion, 590...inlet hole, 591, 592, 593...groove portion, 594...recess, 712, 712b...first outer wall portion, 712B...bottom wall portion, 712C...slope, 712L...longest wall portion, 712L1...first longest wall portion, 712L2...second longest wall portion, 712M, 712M1,712M2...intermediate wall portion, 712R...groove portion, 712S...shortest wall portion, 712ST...shortest outer apex portion, 712T...outer apex portion, 712V...outer wall recess, 712W...outer peripheral surface, 713...protrusion portion, 714...first body portion, 715...first slot insulating portion, 716...first inner wall portion, 716T...inner apex portion, 717...through hole, 718...engagement portion, 718B...base portion, 718N...claw portion, 719...flange portion, 7 22...second outer wall portion, 724...second body portion, 725...second slot insulating portion, 726...second inner wall portion, 732...inner wall portion, 734...side wall portion, 736...tip portion, 842...teeth base portion, 844F1...first flange portion, 844...teeth tip portion, 844W...tip surface, 844F2...second flange portion, AX...rotation axis, LC...laser oscillator, LS...laser light, R1...tilt angle, SL...slot,

Claims

1. An electric motor, a stator having a cylindrical shape extending in an axial direction; a connection member having a side wall portion, a bottom portion, and a terminal space defined by the side wall portion and the bottom portion, and configured so that a connection terminal electrically connected to an energizing terminal from a power source can be placed in the terminal space; The stator includes: a stator core including a yoke extending in a circumferential direction and teeth extending radially inward from the yoke; an electrical insulator attached to the stator core; a stator winding wound around the stator core via the electrical insulator, The teeth are a teeth base extending radially inward from the yoke; a tooth tip portion connected to a radially inner tip of the tooth base portion, The electrical insulator is an outer wall portion disposed at an end portion on a first axial side of the yoke, the outer wall portion having an outer apex portion that is the end portion on the first axial side of the outer wall portion; a body portion disposed at an end portion of the tooth base portion on a first axial side; an inner wall portion disposed at an end portion of the tooth tip portion on a first axial side, the connection terminal is attached to one end of the stator winding, the connecting member is disposed on a first axial side of the stator, The bottom portion is disposed in a first region that is radially inward of the outer wall portion and on a second axial side of the outer top portion. Electric motor.

2. 2. The electric motor according to claim 1, The stator winding is a coil portion wound around the stator core via the electrical insulator; a lead wire portion including one end of the stator winding and connecting the coil portion and the connection terminal, The bottom portion is disposed in a second region of the first region, the second region extending from an end portion of the coil portion on a first axial side to the outer apex. Electric motor.

3. 2. The electric motor according to claim 1, The bottom portion is disposed in a third region of the first region, the third region extending from an inner apex portion, which is an end portion of the inner wall portion on a first axial side, to the outer apex portion. Electric motor.

4. 4. The electric motor according to claim 3, The outer wall portion is a longest wall portion of the outer wall portion that has the longest axial length; a shortest wall portion having the shortest axial length among the outer wall portions whose axial length is equal to or longer than the length of the inner wall portion, The bottom portion is disposed in a fourth region of the third region, the fourth region being from the inner apex to a nearest outer apex, which is an end portion of the nearest wall portion on the first axial side. Electric motor.

5. The electric motor according to claim 3 , wherein the bottom portion is disposed at a position in contact with the inner top portion.

6. 2. The electric motor according to claim 1, The stator winding is a coil portion wound around the stator core via the electrical insulator; a lead wire portion including one end of the stator winding and connecting the coil portion and the connection terminal, At least a portion of the lead wire portion is disposed radially outward from the outer wall portion. Electric motor.

7. 7. The electric motor according to claim 6, the outer wall portion has a groove portion in a radially outer wall surface of the outer wall portion, in which the lead wire portion is disposed. Electric motor.

8. 2. The electric motor according to claim 1, Further, a support member connected to the connection member is provided, the support member is configured to contact a plurality of points of the electrical insulator disposed on a first axial side of the stator. Electric motor.

9. 9. The electric motor according to claim 8, the support member is connected to the connecting member and includes an outer peripheral wall portion extending in a circumferential direction, The outer peripheral wall portion is disposed radially outward of the outer wall portion and opposed to a radially outer wall surface of the outer wall portion. Electric motor.

10. 9. The electric motor according to claim 8, the support member includes a first locking portion, the electrical insulator includes a second locking portion configured to be locked with the first locking portion; Electric motor.

11. 11. The electric motor according to claim 10, The support member is an outer peripheral wall portion connected to the connecting member and extending in a circumferential direction; an outer peripheral wall flange portion that protrudes radially inward from the outer peripheral wall portion and extends circumferentially, the first engaging portion includes at least a portion of the outer peripheral wall flange portion, The second locking portion is a base portion protruding from the outer apex portion toward a first axial direction; claw portions projecting radially outward from the base portion, At least a portion of the outer peripheral wall flange is engaged between the claw portion and the outer top portion. Electric motor.

12. 11. The electric motor according to claim 10, the first engaging portion includes a protruding portion protruding radially outward from the support member, the second engaging portion is formed on a radially inner wall surface of the outer wall portion and includes a recess or a through hole corresponding to the protrusion, The protrusion is configured to be engaged with the recess or the through hole. Electric motor.

13. 9. The electric motor according to claim 8, the support member is connected to the connecting member and includes an outer peripheral wall portion extending in a circumferential direction, the outer peripheral wall portion includes an outer peripheral wall flange portion that protrudes radially inward and extends circumferentially, the outer wall portion has a fitting portion having a convex or concave shape, The outer peripheral wall flange portion has a fitted portion having a convex or concave shape corresponding to the fitting portion. Electric motor.

14. 9. The electric motor according to claim 8, the support member is connected to the connecting member and includes an inner circumferential wall portion extending in a circumferential direction, At least a portion of the inner peripheral wall portion is configured to be in contact with an inner top portion, which is an end portion of the inner wall portion on a first axial side. Electric motor.

15. 9. The electric motor according to claim 8, The stator winding is a coil portion wound around the stator core via the electrical insulator; a lead wire portion including one end of the stator winding and connecting the coil portion and the connection terminal, The support member includes a lead wire receiving portion configured to guide the lead wire portion to the connection member. Electric motor.

16. 16. The electric motor according to claim 15, the stator winding further includes a connection portion including the other end of the stator winding and constituting a neutral point of the Y-connected stator winding, The support member further includes a connection terminal accommodating portion configured to accommodate a connection terminal for connecting the other end of the stator winding to a neutral point. Electric motor.

17. 16. The electric motor according to claim 15, The electric motor further includes a cover member, The cover member is a connecting member cover portion including an opening for inserting the energizing terminal and disposed opposite the bottom portion; a lead wire lid configured to face the lead wire accommodating portion, Electric motor.

18. 18. The electric motor of claim 17, the cover member further includes an inclined portion between the opening and the lead wire lid portion, the inclined portion being inclined at a predetermined angle with respect to the bottom portion; The angle is equal to or greater than 15 degrees and equal to or less than 45 degrees. Electric motor.

19. The electric motor according to any one of claims 1 to 18, wherein the electric motor is a motor used in a compressor mounted on a vehicle.

20. A compressor including a compression mechanism that compresses and discharges a fluid and an electric motor that drives the compression mechanism, The electric motor is the electric motor according to any one of claims 1 to 18. Compressor.

Images