Rotary electric machine and fixing structure for rotary electric machine

Abstract

This rotary electric machine comprises: a motor unit (11) that has a rotor and a stator; and a support member (30) that is provided coaxial to the motor unit and supports the motor unit. The support member comprises: a body section (44) that has an outer circumferential part (64) formed along the circumferential direction of the support member; a fitted part (66) that is provided on the radially outer side of the support member with respect to the outer circumferential part, and is fitted to a fixing target part (22) from the axial direction of the fixing target part; and a vibration-proof member (60) that supports the fitted part with respect to the outer circumferential part. The fitted part is supported relative to the outer circumferential part so as to be deformable in the radial direction of the support member. Support parts (72, 92, 94) that extend to the other side of the outer circumferential part and the fitted part and support the vibration-proof member in the axial direction of the support member are formed on the outer circumferential part and / or the fitted part.

Description

Rotating Electric Machine and Fixing Structure of Rotating Electric Machine Cross - reference to Related Applications

[0001] This application is based on Japanese Application No. 2025 - 027194 filed on February 21, 2025, claims the benefit of its priority, and all the contents of the patent application are incorporated herein by reference.

[0002] The technology of the present disclosure relates to a rotating electric machine and a fixing structure of the rotating electric machine.

[0003] Conventionally, the following technologies are known as the rotating electric machine and the fixing structure of the rotating electric machine. For example, in the example described in Japanese Patent Application Laid - Open No. 2001 - 277834, a motor for a blower is fixed to a scroll casing via a support member. Specifically, the support member has a cylindrical motor casing that houses the motor for the blower and a flange portion formed over the entire circumference of the motor casing, and the flange portion is fixed to the scroll casing by screws.

[0004] As a result of the inventors' detailed examination, the following problems have been found. That is, when the flange portion is fixed to the scroll casing by screws as described in the above publication, the working hours for fixing the motor for the blower to the scroll casing increase by the amount of work for tightening the screws. In addition, when fixing the motor for the blower to the scroll casing, it is desirable that the fixing work is easy. Also, when the motor for the blower is fixed to the scroll casing, it is desirable to suppress the transmission of the vibration of the motor for the blower to the scroll casing.

[0005] The technology of the present disclosure provides a rotating electric machine and a fixing structure of the rotating electric machine that can reduce the working hours for fixing the rotating electric machine to the fixing target portion, facilitate the fixing work, and suppress the transmission of the vibration of the rotating electric machine to the fixing target portion as compared with the conventional technology.

[0006] A first aspect of the technology of the present disclosure is a rotating electric machine comprising: a motor section having a rotor and a stator; a support member provided coaxially with the motor section and supporting the motor section, wherein the support member has a main body having an outer periphery formed along the circumferential direction of the support member; a fitted portion provided radially outward of the support member relative to the outer periphery and fitted into the fixed target from the axial direction of the fixed target; and a vibration-damping member that supports the fitted portion relative to the outer periphery and has vibration-damping properties, wherein the fitted portion is supported so as to be deformable radially with respect to the outer periphery of the support member, and at least one of the outer periphery and the fitted portion has a support portion formed thereon that extends toward the other side of the outer periphery and the fitted portion and supports the vibration-damping member in the axial direction of the support member.

[0007] A second aspect of the technology of this disclosure is a fixing structure for a rotating electric machine, comprising a rotating electric machine according to the first aspect and the part to be fixed.

[0008] A third aspect of the technology of the present disclosure is a fixing structure for a rotating electric machine, comprising: a rotating electric machine; and a fixing target portion formed in an annular shape to which the rotating electric machine is fixed, wherein the fixing target portion comprises: a main body portion having an inner circumferential portion formed along the circumferential direction of the fixing target portion; a fitting portion provided radially inward of the fixing target portion relative to the inner circumferential portion; and a vibration-damping member supporting the fitting portion relative to the inner circumferential portion and having vibration-damping properties, wherein the rotating electric machine has a fitted portion that is fitted into the fitting portion from the axial direction of the fixing target portion, the fitting portion is supported so as to be deformable in the radial direction of the fixing target portion relative to the inner circumferential portion, and a support portion is formed on at least one of the inner circumferential portion and the fitting portion that extends to the other side of the inner circumferential portion and the fitting portion and supports the vibration-damping member in the axial direction of the fixing target portion.

[0009] The technology disclosed herein provides a rotating electric machine and a fixing structure for a rotating electric machine that can reduce the number of work hours required to fix the rotating electric machine to a fixed object compared to conventional technologies, facilitate the fixing work, and suppress the transmission of vibrations from the rotating electric machine to the fixed object.

[0010] This is a schematic diagram of an in-vehicle air conditioning system equipped with a fixed structure for a rotating electric machine according to a first embodiment of the technology disclosed herein. This is a longitudinal cross-sectional view of the rotating electric machine. This is a perspective view of the center piece. This is a perspective view showing the peripheral portion of the mating part of the center piece. This is an explanatory diagram illustrating the manufacturing process of the center piece. This is a plan view of an assembly in which a heat sink is assembled to a resin member. This is a plan view showing the peripheral portion of the mating part of the assembly in which a heat sink is assembled to a resin member. This is a longitudinal cross-sectional view of the center piece. This is a perspective view showing the peripheral portion of the mating part of the resin member. This is a conceptual longitudinal cross-sectional view showing the peripheral portion of the mating part of the center piece. This is an explanatory diagram illustrating the process of fitting the mating part to the mating part. This is a conceptual longitudinal cross-sectional view showing a first modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a second modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a third modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a fourth modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a fifth modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a sixth modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a seventh modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing an eighth modified example of the center piece. This is a conceptual longitudinal cross-sectional view showing a ninth modified example of the centerpiece. This is a conceptual longitudinal cross-sectional view showing a tenth modified example of the centerpiece. This is a conceptual longitudinal cross-sectional view showing a fixed structure for a rotating electric machine according to a second embodiment of the technology of this disclosure. This is a conceptual longitudinal cross-sectional view showing a first modified example of the flange portion. This is a conceptual longitudinal cross-sectional view showing a second modified example of the flange portion.

[0011] [First Embodiment] First, a first embodiment of the technology of this disclosure will be described.

[0012] The in-vehicle air conditioning system S shown in Figure 1 is an air conditioning system mounted on a vehicle and includes a blower 1. The blower 1 includes a rotating electric machine 10, a fan 12, and a scroll casing 14. The rotating electric machine 10 is a fan motor that rotates the fan 12. The rotating electric machine 10 has a motor shaft 24, to which the fan 12 is fixed. The scroll casing 14 is formed, for example, in a spiral shape and houses the fan 12. When the rotating electric machine 10 operates and the fan 12 rotates together with the motor shaft 24, the pressure inside the scroll casing 14 increases, and compressed air is discharged from a discharge port (not shown) formed in the scroll casing 14.

[0013] The blower 1 includes a fixing structure 20 for a rotating electric machine. The fixing structure 20 for the rotating electric machine includes a rotating electric machine 10 and a flange portion 22 formed on a scroll casing 14. The rotating electric machine 10 is fixed to the flange portion 22. The flange portion 22 is formed in an annular shape (specifically, a circular annular shape). The flange portion 22 is an example of a "fixing target portion" according to the technology of this disclosure.

[0014] As shown in Figure 2, the rotating electric machine 10 is, as an example, an outer rotor type brushless motor, and comprises a motor shaft 24, a rotor 26, a stator 28, a center piece 30, and a circuit board 32. The motor shaft 24, rotor 26, and stator 28 constitute the motor section 11 of the rotating electric machine 10. The motor shaft 24, rotor 26, stator 28, center piece 30, and circuit board 32 are arranged coaxially. The center piece 30 is an example of a "support member" according to the technology of this disclosure.

[0015] In each figure, arrow A1 indicates one axial side of the rotating electric machine 10, and arrow A2 indicates the other axial side of the rotating electric machine 10. Also, arrow R1 indicates the radially outer side of the rotating electric machine 10, and arrow R2 indicates the radially inner side of the rotating electric machine 10. The axial and radial directions of the motor shaft 24, rotor 26, stator 28, and center piece 30 are the same as the axial and radial directions of the rotating electric machine 10, respectively.

[0016] The rotor 26 comprises a rotor housing 34 and a rotor magnet 36. The rotor housing 34 is formed in the shape of a bottomed cylinder (in other words, a topped cylinder). The rotor housing 34 has an opening 34A that opens to the other axial side of the rotating electric machine 10. The rotor magnet 36 is fixed to the inside of the peripheral wall portion of the rotor housing 34. A cylindrical fixing portion 38 is formed in the center of the bottom wall portion (in other words, the top portion) of the rotor housing 34. The motor shaft 24 is press-fitted into the inside of the fixing portion 38. The tip portion 24A of the motor shaft 24 protrudes from the rotor housing 34 to one axial side of the rotating electric machine 10. The fan 12 (see Figure 1) described above is fixed to the tip portion 24A of the motor shaft 24.

[0017] The stator 28 is housed inside the rotor housing 34. The stator 28 is positioned radially toward the rotor 26, facing the rotor magnet 36. The stator 28 has a stator core 40 and a plurality of windings 42. The plurality of windings 42 are wound around a plurality of teeth radially formed on the stator core 40 via resin insulators. The entire stator 28, including the stator core 40 and the plurality of windings 42, is annular in shape.

[0018] The center piece 30 has a main body portion 44 facing the opening 34A of the rotor housing 34, a first bearing housing portion 46 provided on one axial side of the rotating electric machine 10 relative to the main body portion 44, and a second bearing housing portion 48 provided on one axial side of the rotating electric machine 10 relative to the first bearing housing portion 46. The first bearing housing portion 46 and the second bearing housing portion 48 are provided coaxially.

[0019] The first bearing housing 46 houses the first bearing 50, and the second bearing housing 48 houses the second bearing 52. The first bearing 50 and the second bearing 52 are, for example, ball bearings. The motor shaft 24 is press-fitted inside the first bearing 50 and the second bearing 52. The motor shaft 24 is supported by the first bearing housing 46 and the second bearing housing 48 via the first bearing 50 and the second bearing 52, thereby rotatably supporting the rotor 26 relative to the center piece 30.

[0020] The main body portion 44 is formed in a roughly disc shape, with the axial direction of the rotating electric machine 10 being the thickness direction and extending radially in the direction of the stator 28. The second bearing housing portion 48 is inserted inside the annularly formed stator core 40. The stator core 40 is fixed to the second bearing housing portion 48, thereby supporting the stator 28 on the center piece 30. The main body portion 44 is provided with a connector portion 54. The connector portion 54 is provided on the side of the main body portion 44 opposite to the stator 28.

[0021] The circuit board 32, like the connector section 54, is located on the side of the main body 44 opposite to the stator 28. The circuit board 32 is electrically connected to the connector terminals (not shown) provided on the connector section 54. Multiple switching elements (not shown) for switching the current supplied to the multiple windings 42 are mounted on the circuit board 32. By switching the current supplied to the multiple windings 42 by the multiple switching elements, a rotating magnetic field is formed on the stator 28. Furthermore, the formation of a rotating magnetic field on the stator 28 causes attractive and repulsive forces to act between the stator 28 and the rotor 26, causing the rotor 26 to rotate.

[0022] Next, the configuration of the center piece 30 will be described in more detail. As shown in Figures 3 and 4, the center piece 30 is composed of multiple members. Specifically, the center piece 30 comprises a heat sink 56, a resin member 58, and a vibration-damping member 60. The heat sink 56 is a member that is heat-transferably connected to the circuit board 32 described above, and is made of a metal with high heat conductivity, such as aluminum. The heat sink 56 has the first bearing housing portion 46 described above and a plate-shaped portion 62. The plate-shaped portion 62 extends around the first bearing housing portion 46 and is formed with the axial direction of the center piece 30 as the plate thickness direction.

[0023] The resin member 58 is integrally provided with the heat sink 56. The resin member 58 may be made of any material as long as it is resin. The main body 44 of the center piece 30 is composed of the plate-shaped portion 62 of the heat sink 56 and the portion 58A of the resin member 58 that is integrally formed with the plate-shaped portion 62. The main body 44 is formed around the first bearing housing portion 46. The main body 44 has an outer peripheral portion 64. The outer peripheral portion 64 is the radially outermost part of the main body 44 (more specifically, the part on the outer peripheral surface side of the main body 44) and is formed in an annular shape along the circumferential direction of the center piece 30. The outer peripheral portion 64 is formed of the resin member 58. That is, the outer peripheral portion 64 is made of resin.

[0024] The center piece 30 has a fitting portion 66. The fitting portion 66 is the part that is fitted to the inside of the flange portion 22 from the axial direction of the flange portion 22. The fitting portion 66 is provided radially outward of the center piece 30 relative to the outer circumference 64 of the main body portion 44. A gap is provided between the outer circumference 64 and the fitting portion 66 to accommodate the connecting portion 72, which will be described later, and the intermediate portion 60A between the inner circumference and outer circumference of the vibration-damping member 60.

[0025] The vibration-damping member 60 is formed of a material having vibration-damping properties (i.e., elasticity), such as an elastomer. The vibration-damping member 60 elastically supports the fitted portion 66 with respect to the outer circumference 64. The vibration-damping member 60 is formed in an annular shape along the circumferential direction of the center piece 30. The inner circumference of the vibration-damping member 60 is connected to the outer circumference 64 of the main body 44, and the outer circumference of the vibration-damping member 60 is connected to the fitted portion 66. The vibration-damping member 60 may be formed by integral molding with the resin member 58, or it may be formed as a separate part and integrally assembled with the resin member 58.

[0026] The fitted portion 66 has a plurality of intermittent portions 68 provided intermittently along the circumferential direction of the center piece 30. For example, the plurality of intermittent portions 68 are formed in the same shape and are provided at equal intervals in the circumferential direction of the center piece 30. Each intermittent portion 68 is formed in an arc shape along the circumferential direction of the center piece 30. A gap is provided between adjacent intermittent portions 68 in the circumferential direction of the center piece 30, and a protrusion 70 formed on the outer circumferential surface of the vibration-damping member 60 is provided between adjacent intermittent portions 68.

[0027] The center piece 30 has a plurality of connecting portions 72. The plurality of connecting portions 72 are formed in the resin member 58. Each connecting portion 72 extends from the outer circumference 64 toward the fitted portion 66 and connects the outer circumference 64 and the fitted portion 66. Alternatively, each connecting portion 72 may be considered as a connecting portion that extends from the fitted portion 66 toward the outer circumference 64 and connects the fitted portion 66 and the outer circumference 64.

[0028] Each of the multiple connecting portions 72 corresponds to each of the multiple intermittent portions 68. Each connecting portion 72 connects the outer periphery 64 to each intermittent portion 68. Each connecting portion 72 is formed in an arm shape and has elasticity (in other words, flexibility) that allows it to deform in the radial direction of the center piece 30. By connecting each connecting portion 72 to the outer periphery 64 to each intermittent portion 68, the fitted portion 66 is supported so as to be deformable (i.e., reducible in diameter) relative to the outer periphery 64 of the center piece 30. Furthermore, by connecting the inner periphery of the vibration-damping member 60 to the outer periphery 64 of the main body portion 44, and connecting the outer periphery of the vibration-damping member 60 to the fitted portion 66, the fitted portion 66 is also supported so as to be deformable in the radial direction of the center piece 30 relative to the outer periphery 64.

[0029] The center piece 30 is formed, for example, in the manner shown in Figure 5. That is, first the heat sink 56 is formed by casting or press molding, and then the resin member 58 is integrally attached to the heat sink 56. The resin member 58 may be formed integrally with the heat sink 56 by integral molding (for example, insert molding), or it may be pre-molded and then attached to the heat sink 56. Subsequently, the vibration-damping member 60 is integrally attached to the resin member 58. The vibration-damping member 60 may be formed integrally with the resin member 58 by integral molding (for example, two-color molding), or it may be pre-molded and then attached to the resin member 58.

[0030] As shown in Figure 6, each connecting portion 72 is inclined with respect to the radial direction of the center piece 30 when viewed in the axial direction of the center piece 30. More specifically, as shown in Figure 7, if the connection between the connecting portion 72 and the outer peripheral portion 64 is defined as the first connecting portion P1, the connection between the connecting portion 72 and the discontinuous portion 68 is defined as the second connecting portion P2, the line extending radially from the center piece 30 through the first connecting portion P1 is defined as the radial line L1, and the line connecting the first connecting portion P1 and the second connecting portion P2 is defined as the axis L2 of the connecting portion 72, then the axis L2 of the connecting portion 72 is inclined with respect to the radial line L1.

[0031] Furthermore, adjacent intermittent portions 68 may be integrally connected by a connecting portion having lower rigidity than the intermittent portion 68 with respect to the circumferential direction of the center piece 30. Because the connecting portion has low rigidity, the connecting portion flexes during assembly, making it easier for the intermittent portion 68 to be displaced radially inward, thus facilitating assembly. In addition, by forming the intermittent portions 68 in a connected manner, the axial runout (flatness) of the intermittent portion 68 can be suppressed when viewed from a direction perpendicular to the axial direction of the rotating electric machine 10.

[0032] As shown in Figure 8, each connecting portion 72 has a curved portion 74 that curves in a longitudinal cross-sectional view when cut along the axial direction of the center piece 30. The curved portion 74 is formed in a curved shape that protrudes to the other axial side of the center piece 30. As shown in Figures 8 and 9, the curved portion 74 protrudes in the axial direction of the center piece 30 relative to the outer periphery 64 and the fitted portion 66. For example, the curved portion 74 protrudes to the other axial side of the center piece 30 relative to the outer periphery 64 and the fitted portion 66. That is, the curved portion 74 protrudes toward the side indicated by arrow A2, which is opposite to the rotor 26 (see Figure 2), relative to the outer periphery 64 and the fitted portion 66.

[0033] As shown in Figure 10, each connecting portion 72 extends from the outer peripheral portion 64 toward the fitted portion 66 while embedded in the vibration-damping member 60. Thus, each connecting portion 72 supports the vibration-damping member 60 in the axial direction of the center piece 30. In other words, each connecting portion 72 functions as a support portion that suppresses displacement or deformation of the vibration-damping member 60 in the axial direction of the center piece 30. Each connecting portion 72 is an example of a "support portion" according to the technology of this disclosure. The vibration-damping member 60, like the curved portion 74, has protruding portions 76 that project in the axial direction of the center piece 30 relative to the outer peripheral portion 64 and the fitted portion 66. The curved portion 74 is embedded in the protruding portions 76.

[0034] As shown in Figure 11, the rotating electric machine 10 is fixed to the flange portion 22 of the scroll casing 14 from the axial direction of the flange portion 22. Arrow A1 indicates one side of the flange portion 22 in the thickness direction, and arrow A2 indicates the other side of the flange portion 22 in the thickness direction. Also, arrow R1 indicates the radially outer side of the flange portion 22, and arrow R2 indicates the radially inner side of the flange portion 22. More specifically, the rotating electric machine 10 is fixed to the flange portion 22 from one side in the thickness direction of the flange portion 22.

[0035] The flange portion 22 is formed in an annular shape. The inner circumference of the flange portion 22 is formed as a fitting portion 80. The fitting portion 80 has a locking portion 82 and a stopper portion 84. The locking portion 82 is formed at one end of the flange portion 22 in the thickness direction, and the stopper portion 84 is formed at the other end of the flange portion 22 in the thickness direction. The locking portion 82 has a tapered surface 82A that faces radially inward on one side of the flange portion 22 in the thickness direction. The stopper portion 84 protrudes radially inward from the flange portion 22 than the locking portion 82. The outer circumferential surface 66A of the fitted portion 66 is formed as a support surface and abutment surface that abuts against and is supported by the inner circumferential surface 22A of the flange portion 22.

[0036] Next, a method for fixing the rotating electric machine 10 to the flange portion 22 will be described. When the rotating electric machine 10 is brought close to the flange portion 22 from one side in the thickness direction of the flange portion 22, and the fitted portion 66 of the rotating electric machine 10 comes into contact with the tapered surface 82A of the locking portion 82, a reaction force F1 acts from the tapered surface 82A on the fitted portion 66 toward the radially inward direction of the flange portion 22. When the fitted portion 66 receives the reaction force F1, it deforms radially inward toward the flange portion 22 against the elastic force of the connecting portion 72 and the vibration-damping member 60.

[0037] As the mounting of the rotating electric machine 10 to the flange portion 22 progresses and the fitted portion 66 overcomes the locking portion 82, the fitted portion 66 deforms radially outward of the flange portion 22 due to the elastic force of the connecting portion 72 and the vibration-damping member 60, and is fitted with the fitted portion 80. The fitted portion 66 is fitted with the fitted portion 80, for example, when the connecting portion 72 and the vibration-damping member 60 are elastically deformed in the compression direction. When the fitted portion 66 is fitted with the fitted portion 80, the outer circumferential surface 66A of the fitted portion 66 abuts against and is supported by the inner circumferential surface 22A of the flange portion 22, the stopper portion 84 abuts against the fitted portion 66 from the other side in the thickness direction of the flange portion 22, and the locking portion 82 locks onto the fitted portion 66 from one side in the thickness direction of the flange portion 22. As a result, the rotating electric machine 10 is fixed to the flange portion 22 in the axial and radial directions of the flange portion 22.

[0038] The rotating electric machine 10 and the flange portion 22 may have a positioning structure for positioning the rotating electric machine 10 in the circumferential direction of the flange portion 22 relative to the flange portion 22. The positioning structure may have a protrusion 70 formed on one of the rotating electric machine 10 and the flange portion 22, and a recess formed on the other of the rotating electric machine 10 and the flange portion 22.

[0039] Next, the operation and effects of the first embodiment will be described.

[0040] As described in detail above, in the first embodiment, the center piece 30 has a main body portion 44 and a fitting portion 66 provided radially outward of the center piece 30 relative to the outer circumference 64 of the main body portion 44. The fitting portion 66 is fitted into the inside of the flange portion 22 from the axial direction of the flange portion 22. Therefore, when fixing the rotating electric machine 10 to the flange portion 22, it is not necessary to use screws, and thus the number of work steps required to fix the rotating electric machine 10 to the flange portion 22 can be reduced compared to when screws are used.

[0041] Furthermore, the mating portion 66 is supported so as to be deformable in the radial direction of the center piece 30 relative to the outer circumference 64 of the main body portion 44. Therefore, when fixing the rotating electric machine 10 to the flange portion 22 from one side in the thickness direction of the flange portion 22, the mating portion 66 can overcome the locking portion 82 by deforming radially inward of the center piece 30. This makes the fixing work when fixing the rotating electric machine 10 to the flange portion 22 easier.

[0042] Further, the center piece 30 has a vibration isolation member 60 that supports the fitting portion 66 with respect to the outer peripheral portion 64. Here, the center piece 30 has a connecting portion 72 that connects the outer peripheral portion 64 and the fitting portion 66. The connecting portion 72 extends from the outer peripheral portion 64 toward the fitting portion 66 while being embedded in the vibration isolation member 60, thereby supporting the vibration isolation member 60 in the axial direction of the center piece 30. Therefore, it is possible to suppress the vibration isolation member 60 from being displaced or deformed in the axial direction of the center piece 30 when the rotating electric machine 10 is fixed to the flange portion 22, or the vibration isolation member 60 from being displaced or deformed in the axial direction of the center piece 30 when the rotating electric machine 10 is fixed to the flange portion 22. As a result, the vibration isolation property that the vibration isolation member 60 originally has can be exhibited, so that the vibration of the rotating electric machine 10 can be suppressed from being transmitted to the flange portion 22.

[0043] Thus, according to the first embodiment, the working hours for fixing the rotating electric machine 10 to the flange portion 22 can be reduced, the fixing work is easy, and the vibration of the rotating electric machine 10 can be suppressed from being transmitted to the flange portion 22.

[0044] Further, in the first embodiment, since the rotating electric machine 1o can be directly fixed to the flange portion 22, for example, compared with the case where the rotating electric machine 10 is fixed to the flange portion 22 via a motor holder, the number of parts and the working hours can be reduced because the motor holder is unnecessary.

[0045] Further, the fitting portion 66 has a plurality of intermittent portions 68 provided intermittently along the circumferential direction of the center piece 30. Therefore, for example, compared with the case where the fitting portion 66 is continuously formed along the circumferential direction of the center piece 30, the fitting portion 66 can be easily deformed inward in the radial direction of the center piece 30. Thereby, the fixing work when fixing the rotating electric machine 10 to the flange portion 22 can be performed more easily.

[0046] Further, the outer peripheral portion 64 and the fitting portion 66 are connected by a connecting portion 72, and the resin member 58 integrally includes the outer peripheral portion 64, the fitting portion 66, and the connecting portion 72. Therefore, for example, the number of parts can be reduced as compared with the case where the outer peripheral portion 64 and the fitting portion 66 are separate bodies.

[0047] Further, the connecting portion 72 has flexibility that can be deformed in the radial direction of the center piece 30. Therefore, even if the connecting portion 72 connects the outer peripheral portion 64 and the fitting portion 66, the fitting portion 66 can be deformed inward in the radial direction of the center piece 30, so that the fixing operation when fixing the rotating electric machine 10 to the flange portion 22 can be easily performed.

[0048] Further, each connecting portion 72 connects the outer peripheral portion 64 and each intermittent portion 68. Therefore, each intermittent portion 68 can be independently deformed inward in the radial direction of the center piece 30 according to the reaction force F1 individually input from the fitting portion 80 of the flange portion 22 to each intermittent portion 68. Thereby, the fixing operation when fixing the rotating electric machine 10 to the flange portion 22 can be more easily performed.

[0049] Further, the connecting portion 72 is inclined with respect to the radial direction of the center piece 30 in the axial direction view of the center piece 30. Therefore, for example, the amount of deformation of the connecting portion �2 can be ensured as compared with the case where the connecting portion 72 is formed along the radial direction of the center piece 30 in the axial direction view of the center piece 30. Thereby, the fitting portion ౖ can be easily fitted to the fitting portion 80, so that the fixing operation when fixing the rotating electric machine 10 to the flange portion 22 can be more easily performed.

[0050] Further, the connecting portion 72 has a curved portion 74 that curves in a longitudinal sectional view cut along the axial direction of the center piece 30. Therefore, for example, the amount of deformation of the connecting portion 72 can be ensured as compared with the case where the connecting portion 72 is formed along the radial direction of the center piece 30 in a longitudinal sectional view cut along the axial direction of the center piece 30. Thereby, the fitting portion 66 can be easily fitted to the fitting portion 80, so that the fixing operation when fixing the rotating electric machine 10 to the flange portion 22 can be more easily performed.

[0051] Furthermore, the curved portion 74 protrudes in the axial direction of the center piece 30 relative to the outer circumference 64 and the fitted portion 66. Therefore, compared to, for example, the case where the curved portion 74 does not protrude in the axial direction of the center piece 30 relative to the outer circumference 64 and the fitted portion 66, that is, the case where the curved portion 74 is contained within the thickness range of the outer circumference 64 and the fitted portion 66 in the axial direction of the center piece 30, a greater amount of deformation of the connecting portion 72 can be secured. As a result, the fitted portion 66 can be easily fitted into the fitting portion 80, making the fixing work when fixing the rotating electric machine 10 to the flange portion 22 even easier.

[0052] Furthermore, the connecting portion 72 protrudes from the outer circumference 64 and the fitted portion 66 on the opposite side from the rotor 26 (i.e., the opposite side from the fan 12). Therefore, when the fan 12 rotates integrally with the rotor 26, the connecting portion 72 can suppress the generation of turbulence around the fan 12. In addition, when an operator assembles the rotating electric machine 10 to the fixing target portion 22 and pushes the outer circumference 64 and the fitted portion 66 from the rotor 26 side with their hand or a jig to fit the fitted portion 66 into the fitting portion 80, interference between the hand or jig and the connecting portion 72 can be suppressed. This makes the fixing work when fixing the rotating electric machine 10 to the flange portion 22 even easier.

[0053] Furthermore, the outer circumferential surface 66A of the fitted portion 66 is supported by the inner circumferential surface 22A of the flange portion 22. This makes it possible to suppress axial wobble of the rotating electric machine 10 compared to, for example, the case where the fitted portion 66 is eliminated and the outer circumferential surface of the vibration-damping member 60 is directly supported by the inner circumferential surface 22A of the flange portion 22.

[0054] Next, a modified example of the first embodiment will be described.

[0055] In the first embodiment, the outer periphery 64 of the main body 44 is formed of a resin member 58, but it may also be formed of a heat sink 56, or of another metal member provided on the center piece 30.

[0056] Furthermore, in the first embodiment, the mating portion 66 has a plurality of intermittent portions 68 provided intermittently along the circumferential direction of the center piece 30, but it may also be formed continuously along the circumferential direction of the center piece 30. That is, the mating portion 66 may be formed in an annular shape along the circumferential direction of the center piece 30.

[0057] Furthermore, in the first embodiment, the connecting portion 72 is inclined with respect to the radial direction of the center piece 30 when viewed in the axial direction of the center piece 30, but it may also be formed along the radial direction of the center piece 30 when viewed in the axial direction of the center piece 30.

[0058] Furthermore, in the first embodiment, the connecting portion 72 has a curved portion 74 that curves in a longitudinal cross-sectional view when cut along the axial direction of the center piece 30, but as shown in Figure 12, the connecting portion 72 may also have a bent portion 90 that bends in a longitudinal cross-sectional view when cut along the axial direction of the center piece 30.

[0059] Furthermore, in the first embodiment, the curved portion 74 protrudes in the axial direction of the center piece 30 relative to the outer periphery 64 and the fitted portion 66, but it does not have to protrude in the axial direction of the center piece 30 relative to the outer periphery 64 and the fitted portion 66. That is, the curved portion 74 may be contained within the thickness range of the outer periphery 64 and the fitted portion 66 in the axial direction of the center piece 30. The bent portion 90 described above may also be contained within the thickness range of the outer periphery 64 and the fitted portion 66 in the axial direction of the center piece 30. In addition, the intermediate portion of the vibration-damping member 60 between the outer periphery 64 and the fitted portion 66 (i.e., the portion corresponding to the protruding portion 76) may also be contained within the thickness range of the outer periphery 64 and the fitted portion 66 in the axial direction of the center piece 30.

[0060] Furthermore, in the first embodiment, the curved portion 74 protrudes toward the side opposite to the rotor 26 relative to the outer circumference 64 and the fitted portion 66, but it may also protrude toward the rotor 26 side relative to the outer circumference 64 and the fitted portion 66. The bent portion 90 described above may also protrude toward the rotor 26 side relative to the outer circumference 64 and the fitted portion 66.

[0061] Furthermore, in the first embodiment, the connecting portion 72 is embedded in the vibration-damping member 60, but it may also be exposed from the vibration-damping member 60.

[0062] Furthermore, as shown in Figure 13, the connecting portion 72 may be inclined with respect to the radial direction of the center piece 30 in a longitudinal cross-sectional view taken along the axial direction of the center piece 30. With this configuration, for example, the amount of deformation of the connecting portion 72 can be ensured compared to the case where the connecting portion 72 is formed along the radial direction of the center piece 30 in a longitudinal cross-sectional view taken along the axial direction of the center piece 30. As a result, the fitted portion 66 can be easily fitted into the fitted portion 80, making the fixing work when fixing the rotating electric machine 10 to the flange portion 22 even easier.

[0063] Furthermore, as shown in Figure 13, the connecting portion 72 may be located within the thickness range of the outer circumference 64 and the fitted portion 66 in the axial direction of the center piece 30. Even with this configuration, when an operator pushes the outer circumference 64 and the fitted portion 66 by hand from the rotor 26 side to fit the fitted portion 66 into the fitting portion 80, interference between the operator's hand and the connecting portion 72 can be suppressed, making the fixing work when fixing the rotating electric machine 10 to the flange portion 22 even easier.

[0064] Furthermore, as shown in Figure 14, the connecting portion 72 may be formed along the radial direction of the center piece 30 in a longitudinal cross-sectional view taken along the axial direction of the center piece 30. In addition, the connecting portion 72 may be formed in various shapes other than those described above, such as being bent or curved.

[0065] Furthermore, in the first embodiment, the fitted portion 66 is formed integrally with the outer peripheral portion 64 and the connecting portion 72 by being formed on the resin member 58, but the fitted portion 66 may be formed separately from at least one of the outer peripheral portion 64 and the connecting portion 72. The connecting portion 72 may connect the fitted portion 66 and the outer peripheral portion 64.

[0066] Furthermore, in the first embodiment, the outer periphery 64 and the fitted portion 66 are connected by the connecting portion 72, but they do not necessarily have to be connected.

[0067] Furthermore, in the first embodiment, the resin member 58 may have an extension portion 92 extending from the outer peripheral portion 64 of the main body portion 44 toward the fitted portion 66, as shown in Figure 15, instead of the connecting portion 72. The extension portion 92 is formed in a cantilever shape with a free end and terminates on the outer peripheral portion 64 side of the fitted portion 66. The extension portion 92 extends from the outer peripheral portion 64 toward the fitted portion 66 while embedded in the vibration-damping member 60. As a result, the extension portion 92 supports the vibration-damping member 60 in the axial direction of the center piece 30. That is, the extension portion 92 functions as a support portion that suppresses displacement or deformation of the vibration-damping member 60 in the axial direction of the center piece 30. The extension portion 92 is an example of a "support portion" according to the technology of this disclosure.

[0068] Furthermore, as shown in Figure 15, the fitted portion 66 may be formed separately from the outer peripheral portion 64 of the main body 44. The fitted portion 66 may be supported so as to be deformable in the radial direction of the center piece 30 with respect to the outer peripheral portion 64, by the inner peripheral portion of the vibration-damping member 60 being connected to the outer peripheral portion 64 of the main body 44, and the outer peripheral portion of the vibration-damping member 60 being connected to the fitted portion 66. The same effects as in the first embodiment can be obtained with the example shown in Figure 15.

[0069] Furthermore, as shown in Figure 16, the fitted portion 66 may have an extension portion 94 that extends toward the outer peripheral portion 64 of the main body portion 44. The extension portion 94 is formed in a cantilever shape with a free end and terminates on the fitted portion 66 side of the outer peripheral portion 64. The extension portion 94 extends toward the outer peripheral portion 64 from the fitted portion 66 while embedded in the vibration-damping member 60. As a result, the extension portion 94 supports the vibration-damping member 60 in the axial direction of the center piece 30. That is, the extension portion 94 functions as a support portion that suppresses displacement or deformation of the vibration-damping member 60 in the axial direction of the center piece 30. The extension portion 94 is an example of a "support portion" according to the technology of this disclosure.

[0070] Furthermore, as shown in Figure 16, the fitted portion 66 may be formed separately from the outer peripheral portion 64 of the main body 44. The fitted portion 66 may be supported so as to be deformable in the radial direction of the center piece 30 relative to the outer peripheral portion 64, by the inner peripheral portion of the vibration-damping member 60 being connected to the outer peripheral portion 64 of the main body 44, and the outer peripheral portion of the vibration-damping member 60 being connected to the fitted portion 66. The same effects as in the first embodiment can be obtained with the example shown in Figure 16.

[0071] Furthermore, as shown in Figure 17, the outer periphery 64 of the main body 44 may have an extension 92 extending toward the fitted portion 66, and the fitted portion 66 may have an extension 94 extending toward the outer periphery 64. The extension 92 of the outer periphery 64 is an example of the "first extension" according to the technology of this disclosure, and the extension 94 of the fitted portion 66 is an example of the "second extension" according to the technology of this disclosure. The same effects as the first embodiment can be obtained by the example shown in Figure 17.

[0072] Furthermore, as shown in Figure 17, the tip of the extension portion 92 and the tip of the extension portion 94 may overlap in the radial direction of the center piece 30. With this configuration, the effect of suppressing displacement or deformation of the vibration-damping member 60 in the axial direction of the center piece 30 can be enhanced.

[0073] Furthermore, as shown in Figure 18, the outer peripheral portion 64 of the main body portion 44 may have multiple extension portions 92 (for example, a pair of extension portions 92) formed on the extension portion 94 formed on the fitted portion 66. The multiple extension portions 92 may also be formed on both sides of the center piece 30 in the axial direction relative to the extension portion 94. Even with this configuration, the effect of suppressing displacement or deformation of the vibration-damping member 60 in the axial direction of the center piece 30 can be enhanced.

[0074] Furthermore, as shown in Figure 19, the fitted portion 66 may have multiple extensions 94 (for example, a pair of extensions 94) formed on the extension 92 formed on the outer circumference 64. The multiple extensions 94 may also be formed on both sides of the center piece 30 in the axial direction relative to the extension 92. Even with this configuration, the effect of suppressing displacement or deformation of the vibration-damping member 60 in the axial direction of the center piece 30 can be enhanced.

[0075] Furthermore, in the examples shown in Figures 18 and 19, the tip of the extension portion 92 and the tip of the extension portion 94 may overlap in the radial direction of the center piece 30.

[0076] Furthermore, as shown in Figure 20, the tip of the extension portion 92 and the tip of the extension portion 94 may be connected to form a bent connecting portion 72.

[0077] Furthermore, as shown in Figure 21, the vibration-damping member 60 may have a covering portion 96 that covers the fitted portion 66 from the axial direction of the center piece 30 and is fitted into the fitting portion 80 together with the fitted portion 66. Alternatively, the covering portion 96 may be provided on the other axial side of the center piece 30 relative to the fitted portion 66. With this configuration, the effect of suppressing the transmission of vibrations from the rotating electric machine 10 to the flange portion 22 can be enhanced.

[0078] Furthermore, by having the covering portion 96 in a compressed state in the axial direction (along the directions of arrows A1 and A2) and in contact with the flange portion 22, axial rattle between the flange portion 22 and the fitted portion 66 can be suppressed. In addition, by having the covering portion 96 in a compressed state and in contact with the flange portion 22, the intrusion of water and wind from the fan 12 side to the opposite side of the center piece 30 can be suppressed.

[0079] Furthermore, although the rotating electric machine 10 is used in the in-vehicle air conditioning system S in the first embodiment, it may also be used in systems or devices other than the in-vehicle air conditioning system S. Also, although the rotating electric machine 10 is fixed to the flange portion 22 formed in the scroll casing 14, the part to which the rotating electric machine 10 is fixed may be a structure other than the flange portion 22.

[0080] Furthermore, the rotating electric machine 10 may be any type of motor other than an outer rotor type brushless motor, such as an inner rotor type brushless motor, a brushed motor, or an axial gap motor.

[0081] Furthermore, among the multiple modifications described in the first embodiment, the combinable modifications may be combined and implemented as appropriate.

[0082] [Second Embodiment] Next, a second embodiment of the technology of the present disclosure will be described.

[0083] The fixed structure 120 of the rotating electric machine according to the second embodiment shown in Figure 22 has the following configuration changes compared to the fixed structure 20 of the rotating electric machine according to the first embodiment described above.

[0084] In each figure, arrow A1 indicates one side of the flange portion 22 in the thickness direction, and arrow A2 indicates the other side of the flange portion 22 in the axial direction. Also, arrow R1 indicates the radially outer side of the flange portion 22, and arrow R2 indicates the radially inner side of the flange portion 22. The axial and radial directions of the main body portion 122, which will be described later, are the same as the axial and radial directions of the flange portion 22, respectively.

[0085] The outer periphery 64 of the main body portion 44 provided on the center piece 30 is formed as a fitting portion 66. That is, the fitting portion 66 is integrally formed with the outer periphery 64.

[0086] The flange portion 22 has a main body portion 122, a fitting portion 124, a vibration-damping member 128, and a connecting portion 130. The main body portion 122 is formed in an annular shape (specifically, a circular annular shape). The main body portion 122 has an inner circumference portion 126. The inner circumference portion 126 is formed in an annular shape along the circumferential direction of the flange portion 22. The fitting portion 124 is provided radially inward of the flange portion 22 relative to the inner circumference portion 126 of the main body portion 122. The vibration-damping member 128 supports the fitting portion 124 relative to the inner circumference portion 126. The vibration-damping member 128 has vibration-damping properties.

[0087] The fitting portion 124 is supported by the vibration-damping member 128 and the connecting portion 130 so as to be deformable in the radial direction of the flange portion 22 relative to the inner circumference portion 126. The connecting portion 130 extends from the inner circumference portion 126 toward the fitting portion 124 and connects the inner circumference portion 126 and the fitting portion 124. The connecting portion 130 is embedded in the vibration-damping member 128 and extends from the inner circumference portion 126 toward the fitting portion 124, thereby supporting the vibration-damping member 128 in the axial direction of the flange portion 22. The fitting portion 124 has locking portions 132 and stopper portions 134 similar to the locking portions 82 and stopper portions 84 of the first embodiment (see Figure 21).

[0088] Next, a method for fixing the rotating electric machine 10 to the flange portion 22 will be described. When the rotating electric machine 10 is brought close to the flange portion 22 from one side in the thickness direction of the flange portion 22, and the fitted portion 66 of the rotating electric machine 10 comes into contact with the tapered surface 132A of the locking portion 132, a reaction force F2 acts on the tapered surface 82A from the fitted portion 66 toward the radially outward direction of the flange portion 22. When the fitted portion 124 receives the reaction force F2, it deforms radially outward of the flange portion 22 against the elastic force of the connecting portion 130 and the vibration-damping member 128.

[0089] As the mounting of the rotating electric machine 10 to the flange portion 22 progresses and the fitted portion 66 overcomes the locking portion 132, the fitted portion 124 deforms radially inward of the flange portion 22 due to the elastic force of the connecting portion 130 and the vibration-damping member 128, and is fitted with the fitted portion 66. The fitted portion 124 is fitted with the fitted portion 66 when, for example, the connecting portion 130 and the vibration-damping member 128 are elastically deformed in the compression direction. When the fitted portion 66 is fitted with the fitted portion 124, the outer circumferential surface 66A of the fitted portion 66 is supported by the inner circumferential surface 22A of the flange portion 22, the stopper portion 134 abuts against the fitted portion 66 from the other side in the thickness direction of the flange portion 22, and the locking portion 132 locks onto the fitted portion 66 from one side in the thickness direction of the flange portion 22. As a result, the rotating electric machine 10 is fixed to the flange portion 22 in the axial and radial directions of the flange portion 22.

[0090] In the second embodiment described in detail above, the same effects as in the first embodiment can be obtained. That is, according to the second embodiment, the number of work hours required to fix the rotating electric machine 10 to the flange portion 22 can be reduced, the fixing work is made easier, and the transmission of vibrations of the rotating electric machine 10 to the flange portion 22 can be suppressed.

[0091] In the second embodiment, the same modifications as in the first embodiment can be adopted for the same configuration as in the first embodiment. For example, as shown in Figure 23, the inner circumference 126 of the main body 122 may have an extension 136 that extends toward the fitting portion 124. The extension 136 may be embedded in the vibration-damping member 128 and extend toward the fitting portion 124 from the inner circumference 126, thereby supporting the vibration-damping member 128 in the axial direction of the flange portion 22.

[0092] Furthermore, as shown in Figure 24, for example, the fitting portion 124 may have an extension portion 138 that extends toward the inner circumference portion 126 of the main body portion 122. The extension portion 138 may be embedded in the vibration-damping member 128 and extend toward the inner circumference portion 126 from the fitting portion 124, thereby supporting the vibration-damping member 128 in the axial direction of the flange portion 22.

[0093] Furthermore, among the multiple modifications described in the second embodiment, the combinable modifications may be combined and implemented as appropriate.

[0094] Furthermore, any combination of the configurations described in the first embodiment and the configurations described in the second embodiment may be combined as appropriate.

[0095] Although the first and second embodiments of the technology disclosed herein have been described above, the technology disclosed herein is not limited to those described above, and can of course be implemented in various modified forms without departing from its spirit.

[0096] The following are additional notes regarding the technology of the present disclosure. (Additional Claim 3) The support portion is a connecting portion (72) that connects the outer periphery portion and the fitted portion, and the connecting portion has flexibility that allows it to be deformed in the radial direction of the support member, as described in Claim 1 or Claim 2. (Additional Claim 4) The fitted portion has a plurality of intermittent portions provided intermittently along the circumferential direction of the support member, and the support member has a plurality of support portions, each of the support portions is a connecting portion that connects the outer periphery portion and each of the intermittent portions, and each of the connecting portions has flexibility that allows it to be deformed in the radial direction of the support member, as described in Claim 1 or Claim 2. (Additional Claim 5) The connecting portion is inclined with respect to the radial direction of the support member in an axial view of the support member, as described in Claim 3 or Claim 4. (Addendum Claim 6) The rotating electric machine according to Claim 3 or Claim 4, wherein the connecting portion is inclined with respect to the radial direction of the support member in a longitudinal cross-sectional view taken along the axial direction of the support member. (Addendum Claim 7) The rotating electric machine according to Claim 3 or Claim 4, wherein the connecting portion has a curved portion (74) or a bent portion (90) that curves in a longitudinal cross-sectional view taken along the axial direction of the support member. (Addendum Claim 9) The rotating electric machine according to Claim 7 or Claim 8, wherein the curved portion or the bent portion protrudes from the outer circumference and the fitted portion on the side opposite to the rotor. (Addendum Claim 10) The rotating electric machine according to Claim 3 or Claim 4, wherein the connecting portion is contained within the thickness range of the outer circumference and the fitted portion in the axial direction of the support member. (Addendum Claim 11) The rotating electric machine according to Claim 1 or Claim 2, wherein the support portion is an extension (92, 94) formed in a cantilever shape. (Additional claim 13) The vibration-damping member has a covering portion (96) that covers the fitted portion from the axial direction of the support member and is fitted together with the fitted portion to the fixed object, according to any one of claims 1 to 12. (Additional claim 14) The outer circumferential surface (66A) of the fitted portion is a support surface that is supported by the fixed object, according to any one of claims 1 to 13.(Addendum claim 15) The rotating electric machine according to any one of claims 1 to 14, wherein the outer circumferential surface of the fitted portion is a contact surface that abuts against the inner circumferential surface of the portion to be fixed. (Addendum claim 16) A fixing structure (20) for a rotating electric machine comprising: the rotating electric machine according to any one of claims 1 to 15; and the portion to be fixed.

Claims

1. A rotating electric machine (10) comprising: a motor section (11) having a rotor (26) and a stator (28); a support member (30) provided coaxially with the motor section and supporting the motor section, wherein the support member comprises: a main body (44) having an outer peripheral portion (64) formed along the circumferential direction of the support member; a fitted portion (66) provided radially outward of the support member relative to the outer peripheral portion and fitted into the fixed target portion (22) from the axial direction of the fixed target portion; and a vibration-damping member (60) that supports the fitted portion relative to the outer peripheral portion and has vibration-damping properties, wherein the fitted portion is supported so as to be deformable in the radial direction of the support member relative to the outer peripheral portion; and at least one of the outer peripheral portion and the fitted portion has a support portion (72, 92, 94) formed thereon that extends to the other side of the outer peripheral portion and the fitted portion and supports the vibration-damping member in the axial direction of the support member.

2. The rotating electric machine according to claim 1, wherein the fitted portion has a plurality of intermittent portions (68) provided intermittently along the circumferential direction of the support member.

3. The rotating electric machine according to claim 1 or claim 2, wherein the support portion is a connecting portion (72) that connects the outer circumference portion and the fitted portion, and the connecting portion has flexibility that allows it to deform in the radial direction of the support member.

4. The rotating electric machine according to claim 1 or 2, wherein the fitted portion has a plurality of intermittent portions provided intermittently along the circumferential direction of the support member, the support member has a plurality of support portions, each support portion is a connecting portion that connects the outer periphery to each of the intermittent portions, and each connecting portion has flexibility that allows it to deform in the radial direction of the support member.

5. The rotating electric machine according to claim 3 or claim 4, wherein the connecting portion is inclined with respect to the radial direction of the support member when viewed in the axial direction of the support member.

6. The rotating electric machine according to claim 3 or claim 4, wherein the connecting portion is inclined with respect to the radial direction of the support member in a longitudinal cross-sectional view taken along the axial direction of the support member.

7. The rotating electric machine according to claim 3 or claim 4, wherein the connecting portion has a curved portion (74) or a bent portion (90) that curves when viewed in a longitudinal section taken along the axial direction of the support member.

8. The curved portion or the bent portion protrudes in the axial direction of the support member relative to the outer circumference and the fitted portion, as described in claim 7.

9. The curved portion or the bent portion protrudes from the outer circumference and the fitted portion on the side opposite to the rotor, according to claim 7 or claim 8.

10. The rotating electric machine according to claim 3 or claim 4, wherein the connecting portion is located within the range of the thickness of the outer circumference and the fitted portion in the axial direction of the support member.

11. The rotating electric machine according to claim 1 or claim 2, wherein the support portion is an extension portion (92, 94) formed in a cantilever shape.

12. The rotating electric machine according to claim 11, wherein the outer periphery has a first extension portion (92) extending toward the fitted portion, the fitted portion has a second extension portion (94) extending toward the outer periphery, and the tip of the first extension portion and the tip of the second extension portion overlap in the radial direction of the support member.

13. The vibration-damping member has a covering portion (96) that covers the fitted portion from the axial direction of the support member and is fitted together with the fitted portion to the fixed object, according to any one of claims 1 to 12.

14. The rotating electric machine according to any one of claims 1 to 13, wherein the outer circumferential surface (66A) of the fitted portion is a support surface supported by the fixed portion.

15. The rotating electric machine according to any one of claims 1 to 14, wherein the outer circumferential surface of the fitted portion is a contact surface that abuts against the inner circumferential surface of the fixed portion.

16. A fixing structure (20) for a rotating electric machine comprising: a rotating electric machine according to any one of claims 1 to 15; and the part to be fixed.

17. The fixing structure for a rotating electric machine according to claim 16, wherein the rotating electric machine is a fan motor that rotates a fan (12) provided in an in-vehicle air conditioning system (S), and the part to be fixed is a flange portion (22) formed on a scroll casing (14) provided in the in-vehicle air conditioning system and housing the fan.

18. A fixing structure (120) for a rotating electric machine (10), comprising: a fixing target portion (22) formed in an annular shape to which the rotating electric machine is fixed, wherein the fixing target portion comprises: a main body portion (122) having an inner circumferential portion (126) formed along the circumferential direction of the fixing target portion; a fitting portion (124) provided radially inward of the fixing target portion relative to the inner circumferential portion; and a vibration-damping member (128) that supports the fitting portion relative to the inner circumferential portion and has vibration-damping properties, wherein the rotating electric machine has a fitted portion (66) that is fitted into the fitting portion from the axial direction of the fixing target portion, the fitting portion is supported so as to be deformable radially of the fixing target portion relative to the inner circumferential portion, and at least one of the inner circumferential portion and the fitting portion has a support portion (130, 136, 138) that extends to the other side of the inner circumferential portion and the fitting portion and supports the vibration-damping member in the axial direction of the fixing target portion.

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