Electric compressor motor and electric compressor comprising the same

Abstract

The present invention provides a motor for an electric compressor that avoids collisions between the insulation and the core caused by vibration and reduces stress toward the insulation. The motor for an electric compressor includes: a core (22) of a stator (21); an insulation (33) mounted on the outer surface of pole teeth (27) of the core (22); and a winding (23) wound around the outer surface of the insulation (33), wherein the winding includes: a recess (34) formed on the outer surface of the pole teeth (27); and a protrusion (41) formed on the inner surface of the insulation (33), the protrusion (41) of the insulation (33) fitting into the recess (34) of the pole teeth (27).

Description

Technical Field

[0001] The present invention relates to an electric compressor motor having a winding wound on an insulating member mounted on the core of a stator, and an electric compressor including the electric compressor motor. Background Technology

[0002] Conventionally, motors used to drive the compression components of electric compressors consist of a stator and a rotor that rotates inside the stator. The stator is configured such that multiple pole teeth formed in the core are each fitted with an insulating element on which a winding is wound (see, for example, Patent Document 1). Existing technical documents Patent documents

[0003] Patent Document 1: Japanese Patent Application Publication No. 2018-126009 Summary of the Invention The technical problem that the invention aims to solve

[0004] Here, Figure 22 A conventional stator 100 is shown (side view only of the inner core 102 and the insulating member 103), comprising an inner core 102 and an outer core (not shown), wherein the inner core has a plurality of adjacent pole teeth 101, the outer core is coupled to the outside of the inner core to form a magnetic circuit, and the insulating member is mounted to the pole teeth 101 from the radially outer side of the stator 100. Figure 23 It shows Figure 22 An enlarged view of part C of the circle.

[0005] When the insulating member 103 is installed onto the pole tooth 101, the pole tooth 101 is inserted into the mounting hole 103A formed in the insulating member 103. However, since the insulating member 103 is typically molded from an insulating rigid synthetic resin, when the pole tooth 101 is pressed into the mounting hole 103A of the insulating member 103 and the outer surface of the pole tooth 101 is pressed against the inner surface of the mounting hole 103A, the insulating member 103 becomes bulging from the inside, thus posing a risk of cracking. Therefore, as shown in the image, a crack is formed between the insulating member 103 and the pole tooth 101. Figure 23 As shown in the enlarged illustration, a gap X (spacing) is typically ensured in the axial direction of the stator 100, but due to the presence of the aforementioned gap X, the insulator 103 can move in the axial direction.

[0006] Therefore, under conditions such as vibration, the insulating member 103 may collide with the core (inner core 102), generating stress on the insulating member 103, and in the worst case, there is a risk of breakage. In the aforementioned patent literature, although the structure is different, the insulating member is fixed to the core by injecting adhesive into the hole to suppress radial movement of the insulating member. However, the relevant measures require the injection of adhesive, which increases assembly time, and the movement suppression effect achieved by the adhesive is limited, requiring improvement.

[0007] The present invention was made to solve the aforementioned technical problem, and its object is to provide an electric compressor motor and an electric compressor including the electric compressor motor, which can avoid collision between the insulation and the core caused by vibration and can reduce the stress towards the insulation. Technical solutions adopted to solve technical problems

[0008] To solve the above-mentioned technical problems, the present invention provides a motor for an electric compressor, comprising: a core of a stator; an insulating member mounted on the outer surface of the pole teeth of the core; and a winding wound around the outer surface of the insulating member, characterized in that it includes: a recess formed on the outer surface of the pole teeth; and a protrusion formed on the inner surface of the insulating member, wherein the protrusion of the insulating member engages with the recess of the pole teeth.

[0009] The second aspect of the invention relates to an electric compressor motor that, based on the above-mentioned invention, is characterized in that the insulating component is made of rigid resin.

[0010] The electric compressor motor of the third aspect of the invention is based on the invention of the first aspect, characterized in that a concave portion is formed only in the central portion of the outer surface of one side of the pole teeth, and a convex portion is formed only in the central portion of the inner surface of one side of the insulating member corresponding to the concave portion.

[0011] The electric compressor motor of the fourth aspect of the invention is based on the invention of the first aspect, characterized in that a plurality of recesses are formed on the outer surface of the pole teeth, and a plurality of protrusions are formed on the outer surface of the insulating member at positions corresponding to each recess.

[0012] The fifth aspect of the invention, an electric compressor motor, is based on the invention of the first aspect, characterized in that, when the insulating element is installed on the pole teeth, an inclined surface is formed at the corner of the protrusion on the side that initially enters the recess, said protrusion having a tapered front end shape.

[0013] The electric compressor motor of the sixth aspect of the invention is based on the invention of the first aspect, characterized in that the core of the stator is composed of an inner core having a plurality of adjacent pole teeth and an outer core coupled to the outside of the inner core to form a magnetic circuit, and an insulating member wound with wire is mounted on the pole teeth from the radially outer side of the stator.

[0014] The seventh aspect is an electric compressor, characterized in that it includes the electric compressor motor of the above-mentioned inventions, and the electric compressor motor and the compression component are housed in a container. Invention Effects

[0015] According to the present invention, in an electric compressor motor comprising a core of a stator, an insulating member mounted on the outer surface of pole teeth of the core, and a winding wound on the outer surface of the insulating member, a recess formed on the outer surface of the pole teeth and a protrusion formed on the inner surface of the insulating member are included. The protrusion of the insulating member engages with the recess of the pole teeth. Therefore, the insulating member is securely held to the pole teeth of the core by the engagement of the protrusion of the insulating member with the recess of the pole teeth.

[0016] This design suppresses axial movement of the insulating component, prevents collisions between the insulating component and the core caused by vibration, significantly reduces stress on the insulating component, and effectively eliminates damage to the insulating component. Furthermore, because the structure involves fitting the protrusion of the insulating component into the recess of the pole tooth, assembly workability is not compromised.

[0017] In this case, the insulating element is not expanded by the pole teeth as in the past, but instead becomes a shape where the protrusions of the insulating element are subjected to pressure in the compressive direction from the inner surface of the concave portion of the pole teeth. Therefore, as in the invention of the second aspect, the insulating element made of rigid resin will not crack. Furthermore, since the protrusions are formed, the rigidity of the insulating element itself is also improved, thereby also having the effect of suppressing the breakage of the insulating element.

[0018] Furthermore, if, as in the third aspect of the invention, the recess is formed only in the central portion of one side of the outer surface of the pole tooth, and the protrusion is formed only in the central portion of one side of the inner surface of the insulating member corresponding to the recess, then axial movement of the insulating member can be suppressed with a simple shape and without impairing assembly operability. In addition, the rigidity of the sidewall of the insulating member can be improved by the protrusion.

[0019] Conversely, if multiple recesses are formed on the outer surface of the pole teeth as in the fourth aspect of the invention, and multiple protrusions are formed on the outer surface of the insulating element at positions corresponding to each recess, the insulating element can be firmly held by the pole teeth, thereby more effectively suppressing axial movement of the insulating element.

[0020] In this case, when the insulating element is installed on the pole tooth as in the invention of the fifth aspect, the protrusion is formed into a front-end thin shape by forming an inclined surface at the corner of the protrusion on the side that initially enters the recess, so as to facilitate the insertion of the protrusion of the insulating element into the recess of the pole tooth, thereby further improving the assembly workability.

[0021] Furthermore, the invention described above, as in the invention of the sixth aspect, is extremely effective in electric compressor motors where the stator core is composed of an inner core having a plurality of adjacent pole teeth and an outer core coupled to the outside of the inner core to form a magnetic circuit, and an insulating member wound with wire is mounted from the radially outer side of the stator to the pole teeth.

[0022] Furthermore, as in the invention of the seventh aspect, the electric compressor motor and compression components of the inventions of the first to sixth aspects are housed in a container to form an electric compressor, thereby enabling the realization of an electric compressor with stable performance and few malfunctions. Attached Figure Description

[0023] Figure 1 This is a longitudinal sectional side view of an electric compressor equipped with an electric compressor motor according to one embodiment of the present invention. Figure 2 It constitutes Figure 1 An exploded perspective view of the stator of a motor for an electric compressor (Example 1). Figure 3 yes Figure 2 A three-dimensional view of the inner core of the stator. Figure 4 yes Figure 3 Side view of the inner core. Figure 5 yes Figure 2 A three-dimensional view of the stator's insulating components. Figure 6 Is Figure 2 A side view of the inner core with insulating components installed. Figure 7 yes Figure 6 An enlarged view of part A of the circle. Figure 8 yes Figure 7 BB line section view. Figure 9 This diagram illustrates the maximum stress generated in the direction of the insulating element in the inventive structure of the present invention compared to conventional structures. Figure 10 This is a perspective view of the pole tooth portion of the inner core of another embodiment of the present invention (Embodiment 2). Figure 11 yes Figure 10 A perspective view of the insulating element in the case of an embodiment. Figure 12 Is Figure 10 The pole teeth are equipped with Figure 11 A front view of the condition of the insulating component. Figure 13 Is Figure 10 The pole teeth are equipped with Figure 11 A three-dimensional view of the state of the insulating component. Figure 14 This is a perspective view of the pole tooth portion of the inner core of another embodiment of the present invention (Embodiment 3). Figure 15 yes Figure 14 A perspective view of the insulating element in the case of an embodiment. Figure 16 Is Figure 14 The pole teeth are equipped with Figure 15 A front view of the condition of the insulating component. Figure 17 Is Figure 14 The pole teeth are equipped with Figure 15 A three-dimensional view of the state of the insulating component. Figure 18 This is a perspective view of the pole tooth portion of the inner core of another embodiment of the present invention (Embodiment 4). Figure 19 yes Figure 18 A perspective view of the insulating element in the case of an embodiment. Figure 20 Is Figure 18 The pole teeth are equipped with Figure 19 A front view of the condition of the insulating component. Figure 21 Is Figure 18 The pole teeth are equipped with Figure 19 A three-dimensional view of the state of the insulating component. Figure 22 This is a side view of the stator of an existing electric compressor motor (only the inner core and insulation). Figure 23 yes Figure 22 An enlarged view of part C of the circle. Detailed Implementation

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Example 1

[0025] Figure 1 This is a longitudinal sectional side view of an electric compressor 1, showing an embodiment of which is equipped with the electric compressor motor 4 of the present invention. Figure 2 This is an exploded perspective view showing the stator 21 of the electric compressor motor 4 according to an embodiment of the present invention. Figure 3 This is a perspective view showing the inner core 26. Figure 4 This is a side view showing the inner core 26. Figure 5 This is a perspective view showing the insulating component 33. Figure 6 This is a side view showing the state in which the insulating member 33 is installed in the inner core 26. Figure 7 It is shown Figure 6 An enlarged view of part A of the circle. Figure 8 Show Figure 7 BB line section view.

[0026] exist Figure 1 In this embodiment, the electric compressor 1 is a scroll-type electric compressor formed by housing the scroll-type compressor component 3 of the embodiment, which serves as a compression component, and the electric compressor motor 4 of the present invention within a container 2. The scroll-type compressor component 3 of the embodiment consists of a fixed scroll 6 fixed to the container 2 and a movable scroll 7 that revolves relative to the fixed scroll 6 without rotating under the action of the shaft 8 of the electric compressor motor 4, and is configured such that a scroll-shaped surrounding member 11 formed on the fixed scroll 6 engages with a scroll-shaped surrounding member 12 formed on the movable scroll 7.

[0027] The refrigerant is introduced into container 2 through a refrigerant inlet passage (not shown) and drawn in from the outside into the compression chamber formed between the two surrounding members 11 and 12. The compression chamber narrows towards the center due to the revolution of the movable scroll 7, thus compressing the drawn-in refrigerant and discharging it from the center through the discharge chamber 14 and the refrigerant discharge passage (not shown). Furthermore, because the pressure inside container 2 becomes low, the refrigerant also passes around the electric compressor motor 4, which is cooled by the refrigerant.

[0028] Next, the electric compressor motor 4 of the present invention will be described. The electric compressor motor 4 of the embodiment is a permanent magnet synchronous motor, which is composed of a stator 21 and a rotor 24 with built-in magnets (composed of multiple electromagnetic steel plates stacked together). The stator 21 is composed of a core 22 and a winding 23, and the rotor 24 is fixed to the rotating shaft 8 and rotates inside the stator 21.

[0029] The core 22 of the stator 21 employs an inner core 26 with a plurality of pole teeth 27 separated from each other (the number corresponds to the number of poles; in this embodiment, it is 12). Figure 3 , Figure 4 (As shown in the enlarged view) The inner core 26 has a two-part structure separated from the outer core 28, and the front ends 27A and 27A of the adjacent pole teeth 27, 27A of the inner core 26 are continuous. Figure 3 Thus, the grooves 31 between the pole teeth 27 of the inner core 26 are open to the outside (radial outer side of the stator 21) and closed to the inside (radial center side of the stator 21).

[0030] The inner core 26 and outer core 28 are constructed by stacking and coupling multiple electromagnetic steel plates. Furthermore, the inner side of the outer core 28 has the same number of mating recesses 32 as the pole teeth 27 of the inner core 26. Figure 2 ).

[0031] Furthermore, a recess 34 is formed at the center of the outer surface of each pole tooth 27 on one side (facing the right) of the inner core 26 (in this embodiment, only the center). The recess 34 is formed from the outer side (outer radial side of the stator 21) to the inner side (center radial side of the stator 21), and the outer end and the adjacent pole tooth 27 side are open grooves. Figure 3 , Figure 4 ).

[0032] On the other hand, the winding 23 is pre-wound onto insulating members (winding tubes) 33 and 34 made of insulators, and mounting holes 36 are formed on the inner side of the insulating member 33 for the insertion of the pole teeth 27 of the inner core 26. Furthermore, in this embodiment, the insulating member 33 is formed by injection molding of a rigid synthetic resin such as PET (polyethylene terephthalate) or PEN (polyethylene naphthalate).

[0033] Furthermore, the insulating member 33 has the mounting hole 36 on its inner side, and a winding 23 is wound (wound) around its outer surface. Additionally, in Figure 5 In the diagram, the winding 23 is not shown, but it has a winding portion 37, an inner wall portion 38 located at the inner end of the winding portion 37, i.e., the inner end in the radial direction of the stator 21, and an outer wall portion 39 located at the outer end of the winding portion 37, i.e., the outer end in the radial direction of the stator 21.

[0034] The inner wall portion 38 and the outer wall portion 39 of the insulating member 33 are shaped to extend outward from the winding portion 37 to prevent the winding 23 from falling off the winding portion 37. In addition, a protrusion 41 is formed in the center portion (in this embodiment, only the center portion) of the inner surface of the insulating member 33 on one side (facing the right), that is, the inner surface of the mounting hole 36. The position of the protrusion 41 is corresponding to the concave portion 34 of the pole tooth 27.

[0035] In this embodiment, the protrusion 41 extends from the outer side (outer side in the radial direction of the stator 21) to the inner side (center side in the radial direction of the pole tooth 21) (forming a slat shape), and the inner corner (the corner that initially enters the recess 34 when the insulating member 33 is installed on the pole tooth 27, as described later) is formed as Figure 8 The inclined surface 42 is shown. That is, the thickness of the inner end of the protrusion 41 becomes smaller. Figure 8 ).

[0036] Next, the assembly steps (manufacturing method) of the stator 21 will be described. When assembling the stator 21, firstly, electromagnetic steel plates are stacked and coupled to form an inner core 26 and an outer core 28. Furthermore, winding wire 23 is wound around the outer surface of the winding portion 37 of each insulating member 33 to prepare twelve insulating members 33 with winding wire 23 wound on them.

[0037] The insulating member 33, with the winding 23 wound as described above, is mounted to each pole tooth 27 from the outer side of the inner core 26, i.e., the radial outer side of the stator 21. In this case, the insulating member 33 is mounted to the pole tooth 27 from the outside in such a way that the pole tooth 27 of the inner core 26 is inserted into the mounting hole 36 of the insulating member 33. However, at this time, the protrusion 41 of the insulating member 33 is inserted into the recess 34 of the pole tooth 27 from the outside.

[0038] Furthermore, the thickness dimension (axial dimension of stator 21) of the protrusion 41 of the insulating member 33 is set to a value that allows it to fit into the inner side of the recess 34. Thus, the protrusion 41 of the insulating member 33 fits into the recess 34 of the pole tooth 27, and at the contact point between the protrusion 41 and the recess 34, the two fit together without gap. Figure 7 , Figure 8 ).

[0039] Furthermore, as described above, when the insulating member 33 is installed on the pole tooth 27, a corner portion is formed on the side that initially enters the recess 34. Figure 8 The inclined surface 42 shown has a tapered front end, so the protrusion 41 can be easily inserted into the recess 34. Thus, the winding 23 is wound around the inner core 26.

[0040] Next, the inner core 26, with the winding 23 wound around it, is inserted into the outer core 28. At this time, the outer ends of each pole tooth 27 of the inner core 26 are engaged with each fitting recess 32 of the outer core 28, thereby integrating the inner core 26 and the outer core 28. Thus, the outer core 28 is coupled to the outside of the inner core 26 to form a magnetic circuit. In addition, the windings 23 of each insulating member 33 are wired to form a predetermined circuit.

[0041] As described above, in the present invention, the electric compressor motor 4, which includes a core 22 of a stator 21, an insulating member 33 mounted on the outer surface of the pole teeth 27 of the inner core 26 of the core 22, and a winding 23 wound around the outer surface of the insulating member 33, includes a recess 34 formed on the outer surface of the pole teeth 27 and a protrusion 41 formed on the inner surface of the insulating member 33. The protrusion 41 of the insulating member 33 engages with the recess 34 of the pole teeth 27. Therefore, the insulating member 33 is firmly held in place on the pole teeth 27 of the core 22 by the engagement of the protrusion 41 of the insulating member 33 with the recess 34 of the pole teeth 27.

[0042] Therefore, the axial movement of the insulating member 33 can be suppressed, the collision between the insulating member 33 and the core 22 caused by vibration can be avoided, and the stress towards the insulating member 33 can be significantly reduced.

[0043] Figure 9 Show Figure 22 , Figure 23 The maximum stress generated under the existing structure shown is compared with the maximum stress generated under the inventive structure described above. Additionally, Figure 9 This figure shows the case where an acceleration load of ±1G is applied in the axial direction of the insulating component. It is clear from the figure that, compared to conventional structures, the maximum stress generated in the structure of this application is reduced by approximately 89%. Therefore, damage to the insulating component 33 can be effectively eliminated.

[0044] Furthermore, since the structure involves fitting the protrusion 41 of the insulating member 33 into the recess 34 of the pole tooth 27, assembly workability is not compromised. In this case, the insulating member is not expanded by the pole tooth as in the past, but rather the protrusion 41 of the insulating member 33 is subjected to pressure in the compressive direction from the inner surface of the recess 34 of the pole tooth 27. Therefore, the insulating member 33, made of hard resin as in the embodiment, will not crack. In addition, the formation of the protrusion 41 increases the rigidity of the insulating member 33 itself, thereby also suppressing breakage of the insulating member 33.

[0045] Furthermore, in this embodiment, the recess 34 is formed only in the central portion of one side of the outer surface of the pole tooth 27, and the protrusion 41 is formed only in the central portion of one side of the inner surface of the insulating member 33 corresponding to the recess 34. Therefore, axial movement of the insulating member 33 can be suppressed with a simple shape without impairing assembly workability. In addition, the rigidity of the winding portion 37 (sidewall) of the insulating member can be improved by the protrusion 41.

[0046] In this case, when the insulating member 33 is installed on the pole tooth 27 in the embodiment, the protrusion 41 is formed into a thin-fronted shape by forming an inclined surface 42 at the corner of the protrusion 41 on the side that initially enters the recess 34. Therefore, it is easy to insert the protrusion 41 of the insulating member 33 into the recess 34 of the pole tooth 27, thereby further improving the assembly workability.

[0047] Furthermore, the invention described above is highly effective in the stator 21 core 22, which is composed of an inner core 26 having a plurality of adjacent pole teeth 27 and an outer core 28 coupled to the outside of the inner core 26 to form a magnetic circuit, as in the embodiment. The insulating member 33 with the winding 23 wound around it is mounted in the electric compressor motor 4 of the pole teeth 27 from the radial outside of the stator 21.

[0048] Furthermore, by housing the electric compressor motor 4 and the scroll compressor component 3 within the container 2 as in the embodiment to form the electric compressor 1, a stable and less prone-to-fail electric compressor 1 can be achieved. Example 2

[0049] then, Figures 10-13Another embodiment of the pole teeth 27 and the insulating member 33 of the inner core portion 26 of the electric compressor motor 4 of the present invention is shown. In the aforementioned embodiment (Embodiment 1), a recess 34 is formed only in the center of one side of the outer surface of the pole teeth 27, and a protrusion 41 is formed only in the center of one side of the inner surface of the insulating member 33 corresponding to the recess 34. However, in this embodiment, as shown in the figures, recesses 34 are formed at both the upper and lower parts of one side of the outer surface of the pole teeth 27, and protrusions 41 are formed at both the upper and lower parts of one side of the inner surface of the insulating member 33 corresponding to each recess 34. Example 3

[0050] also, Figures 14-17 Another embodiment of the pole teeth 27 and the insulating member 33 of the inner core portion 26 of the electric compressor motor 4 of the present invention is shown. In the aforementioned embodiment (Embodiment 1), a recess 34 is formed only in the center of one side of the outer surface of the pole teeth 27, and a protrusion 41 is formed only in the center of the inner surface of the insulating member 33 on the side corresponding to the recess 34. However, in this embodiment, as shown in the figures, recesses 34 are formed on both sides of the outer surface of the pole teeth 27 (two in total), and protrusions 41 are formed on both sides of the inner surface of the insulating member 33 corresponding to each recess 34 (two in total). Example 4

[0051] also, Figures 18-21 Another embodiment of the pole teeth 27 and the insulating member 33 of the inner core portion 26 of the electric compressor motor 4 of the present invention is shown. In the aforementioned embodiment (Embodiment 1), a recess 34 is formed only in the center of one side of the outer surface of the pole teeth 27, and a protrusion 41 is formed only in the center of the inner surface of the insulating member 33 corresponding to the recess 34. However, in this embodiment, as shown in the figures, recesses 34 are formed at two locations (a total of four locations) on the upper and lower sides of the outer surfaces of the pole teeth 27, and protrusions 41 are formed at two locations (a total of four locations) on the upper and lower sides of the inner surfaces of the insulating member 33 corresponding to each recess 34.

[0052] If, as in Embodiments 2 to 4 above, a plurality of recesses 34 are formed on the outer surface of the pole teeth 27, and a plurality of protrusions 41 are formed on the outer surface of the insulating member 33 at positions corresponding to each recess 34, the insulating member 33 can be firmly held by the pole teeth 27, thereby more effectively suppressing axial movement of the insulating member 33. Furthermore, in this embodiment, the rigidity of the winding portion 37 (sidewall) of the insulating member can be improved by the two protrusions 41.

[0053] Furthermore, while the present invention is used in a scroll electric compressor in the embodiments, it is not limited thereto. The electric compressor motor 4 of the present invention is also applicable to various electric compressors such as rotary electric compressors. (Symbol Explanation)

[0054] 1. Electric compressor; 2 containers; 3. Scroll-type compression component (compression component); 4. Motors for electric compressors; 8-axis rotation; 21 stators; 22 cores; 23 windings; 24 rotors; 26 inner cores; 27 pole teeth; 28 outer core; 33. Insulating components; 34 concavity; 36 mounting holes; 37 winding sections; 38. Inner wall portion; 39. Lateral wall portion; 41 convex part; 42 Inclined surface.

Claims

1. A motor for an electric compressor, comprising: The core of the stator; An insulating element, wherein the insulating element is mounted on the outer surface of the pole teeth of the core; And the winding, which is wound around the outer surface of the insulating element. Its features are, Includes: a recess formed on the outer surface of the pole tooth; And a protrusion formed on the inner surface of the insulating member, the protrusion of the insulating member fitting into the recess of the pole tooth.

2. The motor for an electric compressor as described in claim 1, characterized in that, The insulating component is made of rigid resin.

3. The motor for an electric compressor as described in claim 1, characterized in that, The recess is formed only in the central portion of one side of the outer surface of the pole tooth, and the protrusion is formed only in the central portion of one side of the inner surface of the insulating member corresponding to the recess.

4. The motor for an electric compressor as described in claim 1, characterized in that, The recesses are formed in multiple ways on the outer surface of the pole teeth, and the protrusions are formed in multiple ways on the outer surface of the insulating member at positions corresponding to each of the recesses.

5. The motor for an electric compressor as described in claim 1, characterized in that, When the insulating element is installed on the pole tooth, an inclined surface is formed at the corner of the protrusion on the side that initially enters the recess, and the protrusion has a tapered front end.

6. The motor for an electric compressor as described in claim 1, characterized in that, The stator core is composed of an inner core having a plurality of adjacent pole teeth and an outer core coupled to the outside of the inner core to form a magnetic circuit, and the insulating member wound with the winding is mounted to the pole teeth from the radially outer side of the stator.

7. An electric compressor, characterized in that, The device includes an electric compressor motor as described in any one of claims 1 to 6, and houses the electric compressor motor and the compression component inside a container.

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