JP5936932B2 - Electric motor and compressor - Google Patents

Description

  The present invention relates to an electric motor, in particular, an electric motor for a compressor, and relates to a technique capable of efficiently recovering oil such as lubricating oil flowing through a cooling medium passage provided in a stator.

As a compressor (electric compressor) including a compression mechanism section and an electric motor that drives the compression mechanism section, for example, a compressor 500 shown in FIG. 34 is known (see Patent Document 1).
A compressor (electric compressor) 500 shown in FIG. 34 includes a compression mechanism unit 600, an electric motor 700 disposed above the compression mechanism unit 600, and an accumulator 900. The electric motor 700 includes a stator 710 and a rotor 750. The stator 710 has a stator core 720 and a stator winding 730. The rotor 750 has a rotor core 760 and a rotation shaft 770. The compression mechanism unit 600 includes a cylinder 610 and an eccentric rotor 620 driven by a rotating shaft 770 of the electric motor 700. The compression mechanism unit 600 and the electric motor 700 are disposed in a sealed state in the case 800. In addition, a suction pipe 510 and a discharge pipe 520 are connected to the case 800.
The accumulator 900 separates the cooling medium (for example, cooling gas) and the lubricating oil. The cooling medium separated by the accumulator 900 is supplied to the compression mechanism unit 600 through the suction pipe 510. The lubricating oil separated by the accumulator 900 is supplied to the lubricating oil reservoir 630.
The compression mechanism unit 600 compresses the cooling medium sucked from the suction pipe 510 in the cylinder 610 as the eccentric rotor 620 rotates. The cooling medium compressed by the compression mechanism unit 600 is discharged from the discharge pipe 520 through the cooling medium passage provided in the electric motor 700. For example, the cooling medium passage is formed in a groove formed by a notch surface formed along the axial direction on the outer periphery of the stator core 720 and the case 800, or along the axial direction in the stator core 720 or the rotor core 760. It is composed of the formed holes. Further, as the rotating shaft 770 rotates, the lubricating oil stored in the lubricating oil reservoir 630 is supplied to the sliding portion of the compression mechanism unit 600. The lubricating oil that has lubricated the sliding portions is returned to the lubricating oil retainer 630.
In the compressor 500 shown in FIG. 34, a medium (mixed gas) in which a cooling medium and lubricating oil are mixed is discharged from a discharge pipe 520.

Moreover, as an electric motor which drives a compression mechanism part, the electric motor currently disclosed by patent document 2 is used, for example.
The electric motor disclosed in Patent Document 2 includes a stator and a rotor. The stator includes a stator core, end insulating members provided on both axial sides of the stator core, and a stator winding. The stator core includes an annular yoke extending in the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a plurality of teeth protruding radially inward from the yoke and spaced apart in the circumferential direction. have. Each tooth has a tooth base extending in the radial direction and a tooth tip provided at the tip of the tooth base and extending in the circumferential direction. The end sleeper member is disposed at a position corresponding to the outer wall member disposed at a position facing the yoke of the stator core, an inner wall member disposed at a position corresponding to the tip of the tooth, and a position corresponding to the tooth base. It has the connection member which connects a member and an inner wall member. The rotor is rotatably supported in a state where there is a gap between the rotor and the tooth tip. The stator winding is wound directly around the end insulating member and the teeth by a concentrated winding method.
Here, it is necessary to fix the end of the stator winding, particularly the end forming the neutral point, so as not to move due to vibration or the like. In the electric motor disclosed in Patent Document 2, an accommodation space for accommodating the end portion of the stator winding is formed by the end insulating member and the accommodation space forming member.

JP 2009-97394 A JP 2010-45951 A

As described above, in the compressor in which the electric motor is disposed above the compression mechanism portion, the medium in which the cooling medium and the lubricating oil are mixed passes from the discharge pipe through the cooling medium passage provided in the stator of the electric motor. Discharged. Although the lubricating oil discharged together with the cooling medium from the discharge pipe is separated and collected by the accumulator, it is difficult to sufficiently collect the lubricating oil. In this case, the amount of lubricating oil stored in the lubricating oil reservoir gradually decreases, and there is a risk that poor lubrication of the compression mechanism portion will occur.
The present invention has been devised in view of such a point, and accommodates one end of the stator winding for oil flowing together with the cooling medium through the cooling medium passage provided in the stator. It aims at providing the technique which can be efficiently collect | recovered using the member which forms accommodation space.

  The present invention is configured as follows. The “axial direction” indicates a direction of a line (rotation center line) passing through the center of the rotor in a state where the rotor is rotatably supported with respect to the stator. In addition, the “circumferential direction” indicates a circumferential direction centering on the rotation center line when viewed in a cross section perpendicular to the axial direction in a state where the rotor is rotatably supported with respect to the stator. The “radial direction” indicates a direction passing through the rotation center line when viewed in a cross section perpendicular to the axial direction in a state where the rotor is rotatably supported with respect to the stator.

One invention relates to an electric motor including a stator and a rotor. The stator accommodates a stator core having end faces on both sides in the axial direction, end insulating members disposed on both sides along the axial direction with respect to the stator core, a stator winding, and the stator core. Has a case. The other end face along the axial direction of the stator core is disposed above the one end face along the axial direction along the vertical direction. That is, in the present invention, the rotor and the stator are arranged so that the axial direction is along the vertical direction.
The stator has a passage extending along the axial direction. That is, the passage has openings on both end faces of the stator core, and extends so as to communicate both openings. The passage is used as a cooling medium passage for passing a cooling medium compressed by a compressor, for example. Further, the passage is preferably configured by a groove formed by a notch surface obtained by notching the outer peripheral surface of the stator core along the axial direction and a case provided on the outer periphery of the rotor core. It can also be comprised by the hole extended along the axial direction formed in the stator core.
In addition, an end insulating member (an end insulating member disposed above the stator core) disposed on the other side in the axial direction with respect to the stator core is connected to one end of the stator winding. It has a storage space forming member that forms a storage space for storage. The housing space forming member that forms the housing space is configured by a plurality of wall members such as a bottom wall member that forms the bottom wall surface of the housing space and a side wall member that forms the side wall surface. One end of the stator winding corresponds to an end that is easily moved by vibration or the like, typically an end that forms a neutral point.
In the present invention, the housing space forming member has a bottom surface facing the other end surface (upper end surface) of the stator core. A gap is formed between the opening of the passage and the bottom surface on the other side (upward) along the axial direction from the opening of the passage on the other end surface (upper end surface) of the stator core. It is arranged so that. The bottom surface of the housing space forming member is preferably a flat surface, but may be an uneven surface. Further, the bottom surface of the main space forming member may be disposed parallel (substantially parallel) to the other end (upper) end surface of the stator core, or inclined with respect to the other end (upper) end surface of the stator core. May be arranged. “The other side (upper) along the axial direction from the opening of the passage on the other end face (upper end face) of the stator core” is supplied from, for example, a compression mechanism portion disposed below the electric motor, The “position where the cooling medium coming out from the opening of the passage on the end face through the passage (cooling medium passage) provided in the stator corresponds”. The “gap between the opening of the passage on the other end surface (upper end surface) of the stator core and the bottom surface of the housing space forming member” is, for example, a mixed gas in which a cooling medium and lubricating oil are mixed. The lubricating oil contained in the mixed gas is effectively liquefied and contained in the mixed gas when it hits the bottom surface of the housing space forming member through the passage (cooling medium passage) provided in the stator. The cooling medium is set to a distance that can pass between the end face of the stator core and the bottom face of the housing space forming member. The lubricating oil liquefied by the mixed gas hitting the bottom surface of the housing space forming member is returned downward (for example, the compression mechanism) to the electric motor through a passage provided in the stator.
In this invention, the oil component which flowed through the channel | path provided in the stator can be collect | recovered efficiently.

In the different form of this invention, the channel | path is formed of the notch surface and case which notched the outer peripheral surface of the stator core along the axial direction.
For example, in a compressor in which an electric motor is disposed above a compression mechanism unit, a cooling medium passage is often provided on the outer peripheral side of the stator core. In this embodiment, since the bottom surface of the housing space forming member is disposed above the passage provided on the outer peripheral side of the stator core, the oil flowing through the passage provided on the outer peripheral side of the stator core is efficiently used. It can be recovered well.

In another different form of the present invention, the housing space is open along the axial direction on the opposite side (upper side) of the other side (upper side) of the stator core and extends along the circumferential direction. Is formed. The one end of the stator winding is preferably housed in the housing space in a state in which movement in the housing space is prevented. For example, the housing space is filled with resin in a state where one end of the stator winding is housed in the housing space. Furthermore, a slip-out preventing portion for preventing the resin filled in the accommodation space from slipping out of the opening is provided. Alternatively, a holding portion that holds one end of the stator winding is provided.
In this embodiment, one end of the stator winding can be efficiently accommodated in the accommodation space.

In another different aspect of the present invention, each end insulating member is disposed in a radially outer side than the inner wall member, and a plurality of inner wall members extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction. And an outer wall member extending along the circumferential direction and a plurality of connecting members extending along the radial direction and connecting the inner wall member and the outer wall member. And the outer wall member is used as a part of accommodation space formation member. For example, the housing space has a bottom wall surface disposed on one side (downward) along the axial direction, an inner wall surface disposed on the center side along the radial direction, and an outer wall disposed outside along the radial direction. When comprised by a wall surface and the end wall surface arrange | positioned away along the circumferential direction, an outer wall member is used as an inner wall member which forms an inner wall surface.
In this embodiment, since the housing space is formed using the outer wall member of the end insulating member, the configuration of the end insulating member can be simplified.

Another invention relates to a compressor that includes a compression mechanism section and an electric motor that is disposed above the compression mechanism section and drives the compression mechanism section, and uses any one of the above-described electric motors as the electric motor.
In the compressor according to the present invention, oil such as lubricating oil in the compression mechanism can be efficiently recovered.

  In the electric motor and the compressor of the present invention, the oil flowing through the passage provided in the stator can be efficiently recovered.

FIG. 3 is a perspective view of the stator of the electric motor according to the first embodiment (the case is not shown). FIG. 3 is a front view of the stator of the electric motor according to the first embodiment (the case is not shown). It is a fragmentary sectional view of a stator core. FIG. 4 is a view (case is shown) seen from the direction of arrow IV in FIG. 2. FIG. 5 is a sectional view taken along line VV in FIG. 2 (a case is illustrated). It is the perspective view which looked at the edge part insulation member used with the stator of the electric motor of 1st Embodiment from the one side along the axial direction. It is the perspective view which looked at the edge part insulation member used with the stator of the electric motor of 1st Embodiment from the other side along the axial direction. It is a perspective view of the accommodation space formation member of the edge part insulation member of a 1st embodiment. It is the IX-IX sectional view taken on the line of FIG. It is the XX sectional view taken on the line of FIG. It is a perspective view of the example of a change of the accommodation space formation member of a 1st embodiment. It is the XII-XII sectional view taken on the line of FIG. It is the XIII-XIII sectional view taken on the line of FIG. It is the perspective view which looked at the edge part insulation member used with the stator of the electric motor of 2nd Embodiment from the one side along the axial direction. It is a perspective view of the accommodation space formation member of the edge part insulation member of 2nd Embodiment. It is the XVI-XVI sectional view taken on the line of FIG. It is a perspective view of the example of a change of the accommodation space formation member of a 2nd embodiment. It is the perspective view which looked at the edge part insulation member used with the stator of the electric motor of 3rd Embodiment from the one side along the axial direction. It is a perspective view of the accommodation space formation member of the edge part insulation member of 3rd Embodiment. It is the XX-XX sectional view taken on the line of FIG. It is a perspective view of the example of a change of the accommodation space formation member of 3rd Embodiment. It is the perspective view which looked at the edge part insulation member used with the stator of the electric motor of 4th Embodiment from the one side along the axial direction. It is a perspective view of the accommodation space formation member of the edge part insulation member of 4th Embodiment. It is the XXIV-XXIV sectional view taken on the line of FIG. It is the XXV-XXV sectional view taken on the line of FIG. It is a perspective view of the example of a change of the accommodation space formation member of 4th Embodiment. FIG. 27 is a sectional view taken along line XXVII-XXVII in FIG. 26. It is the XXVIII-XXVIII sectional view taken on the line of FIG. It is the perspective view which looked at the edge part insulation member used with the stator of the electric motor of 5th Embodiment from the one side along the axial direction. It is a perspective view of the accommodation space formation member of the edge part insulation member of 5th Embodiment. FIG. 31 is a sectional view taken along line XXXI-XXXI in FIG. 30. It is a perspective view of the example of a change of the accommodation space formation member of a 5th embodiment. FIG. 33 is a sectional view taken along line XXXIII-XXXIII in FIG. 32. It is a schematic block diagram of the compressor with which the compression mechanism part and the electric motor are arrange | positioned along the perpendicular direction.

Embodiments of an electric motor according to the present invention will be described below with reference to the drawings.
The electric motor of each embodiment described below is used as an electric motor 700 (an electric motor that is arranged above the compression mechanism unit 600 and drives the compression mechanism unit 600) shown in FIG. That is, this invention can be comprised as a compressor provided with the electric motor of each embodiment demonstrated below.
In the compressor shown in FIG. 34, in the cooling medium passage provided in the stator 710 of the electric motor 700, as described above, the cooling medium compressed by the compression mechanism unit 600 and the lubrication of the compression mechanism unit 600 are performed. A medium (mixed gas) mixed with oil flows. In the present invention, a configuration for efficiently recovering oil such as lubricating oil flowing through a cooling medium passage provided in the stator 710 of the electric motor 700 is provided.

In the present specification, the “axial direction” means a line passing through the center of the rotor (rotation center line P shown in FIG. 1) in a state where the rotor is rotatably supported with respect to the stator. ) Direction. The “circumferential direction” refers to the rotation center line P as a center when viewed in a cross section perpendicular to the axial direction (direction of the rotation center line P) in a state where the rotor is rotatably supported with respect to the stator. Indicates the circumferential direction to be performed. The “radial direction” is a direction passing through the rotation center line P when viewed in a cross section perpendicular to the axial direction (direction of the rotation center line P) in a state where the rotor is rotatably supported by the stator. Indicates.
In each embodiment described below, the stator and the rotor are arranged so that the axial direction is parallel to the vertical direction (including “substantially parallel”).

  A stator 10 of an electric motor according to a first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of the stator 10 of the electric motor according to the first embodiment, and FIG. 2 is a front view of the stator 10. FIG. 3 is a partial cross-sectional view of the stator core 10. 4 is a view (plan view) seen from the direction of arrow IV in FIG. 2, and FIG. 5 is a cross-sectional view taken along line VV in FIG. 4 and 5, the case 70 is illustrated on the outer peripheral side of the stator core 20, but the case 70 is not illustrated in FIGS. 1 and 2.

The electric motor according to the present embodiment includes a stator 10 and a rotor (not shown).
The stator 10 has a stator core 20, end insulating members 30 and 50, and a stator winding 60.
The stator core 20 is composed of a laminated body in which a plurality of thin electromagnetic steel plates are laminated in the axial direction and integrated by an auto clamp or the like, and has a cylindrical shape (substantially cylindrical shape) having end faces 20A and 20B on both sides in the axial direction. Including). As shown in FIG. 3, the stator core 20 has a yoke 21 extending along the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a diameter from the yoke 21 spaced apart in the circumferential direction. A plurality of teeth 22 extending inward in the direction (rotation center line P side) is provided. The yoke 21 is formed in an annular shape (including a substantially annular shape). Each tooth 22 has a teeth base portion 22a extending radially inward from the yoke 21 and a teeth tip portion 22b provided on the tip side of the teeth base portion 22a and extending in the circumferential direction. A tooth tip surface 22 c is formed on the tooth tip 22 b on the side opposite to the yoke 21. The teeth tip surface 22c is formed in an arc shape centered on the rotation center line P.
The end surface 20B of the stator core 20 corresponds to “an end surface on one side along the axial direction” of the present invention, and the end surface 20A corresponds to “an end surface on the other side along the axial direction” of the present invention.
In the present embodiment, the rotor has a gap (gap) between the outer peripheral surface of the rotor and the tooth tip surface 22c in the rotor housing space formed by the tooth tip surface 22c. It is rotatably supported.
A slot 23 is formed by two teeth 22 adjacent to the yoke 21 in the circumferential direction. The slot 23 has a slot opening 23a between the tooth tips 22b of two teeth 22 adjacent in the circumferential direction.
A slot insulating member 25 is provided in the slot 23. Then, the stator winding 60 is inserted into the slot 23 in a state where the slot insulating member 25 is disposed.
An interphase insulating member 26 is inserted in the slot 23 in order to insulate between the stator windings 60 adjacent in the circumferential direction. In the present embodiment, the interphase insulating member 26 is formed by bending a sheet-like insulating member, and has a V shape (including a substantially V shape) when viewed in a cross section perpendicular to the axial direction.
Note that a cutout portion 28a extending along the axial direction is formed on the outer periphery of the stator core 20 by a cutout surface 28 obtained by cutting out a circular outer peripheral surface along the axial direction. And the notch part 28a between this notch surface 28 and the case 70 arrange | positioned at the outer peripheral side of the stator core 20 is used as a cooling medium channel | path which lets a cooling medium pass. That is, the notch 28a has openings on the end faces 20A and 20B of the stator core 20 and is formed so as to communicate with the openings on both end faces.
A cutout portion 28 a extending along the axial direction formed by the cutout surface 28 and the case 70 corresponds to a “passage” of the present invention.

The end insulating members 30 and 50 are provided on both sides in the axial direction of the stator core 20 at positions facing the end surfaces 20A and 20B.
The end insulating member 50 corresponds to the “end insulating member disposed on one side along the axial direction with respect to the stator core” of the present invention, and the end insulating member 30 corresponds to the “stator” of the present invention. This corresponds to an end insulating member disposed on the other side along the axial direction with respect to the core.
In FIGS. 1 and 2, the end insulating member 50 is illustrated in a simplified manner, but the end insulating member 50 is an end insulating member except that it does not have a housing space forming member 40 described later. 30. Therefore, the description of the end insulating member 50 is omitted.
As shown in FIGS. 6 and 7, the end insulating member 30 has a plurality of inner wall members 31 extending in the circumferential direction when viewed in a cross section perpendicular to the axial direction, and a diameter larger than the inner wall member 31. The outer wall member 32 is arranged on the outer side in the direction and extends along the circumferential direction, and has a plurality of connecting members 33 that extend along the radial direction and connect the inner wall member 31 and the outer wall member 32. The inner wall member 31 and the outer wall member 32 extend along the axial direction (in a wall shape).
The convex portion 35 formed on the bottom surface 30A of the end insulating member 30 is a positioning member for disposing the end insulating member 30 at a predetermined position on the end surface 20A or 20B of the stator core 20, and the stator. The core 20 is configured to be engageable with a recess (not shown) formed in the end surface 20A or 20B of the core 20. The inner wall member 31 in a state where the end insulating member 30 is disposed on one side in the axial direction of the stator core 20 (a state where the end surface 30A of the end insulating member 30 is in contact with the end surface 20A or 20B of the stator core 20). Is disposed at a position facing the tooth tip 22b of the tooth 22, the outer wall member 32 is disposed at a position facing the yoke 21, and the connecting member 33 is disposed at a position facing the tooth base 22a of the tooth 22. The
In addition, in a state where the end insulating member 30 is arranged on one side in the axial direction of the stator core 20, the inner peripheral surface (the rotor side surface) of the inner wall member 31 protrudes from the teeth tip surface 22c to the rotor side. It is preferable to configure so as not to exist. The connecting member 33 of the end insulating member 30 is used when the stator winding 60 is wound around the teeth 22 by a concentrated winding method.

Here, the stator winding 60 directly wound around the connecting member 33 of the tooth 22 and the end insulating member 30 (50) has one end and the other end. Each end of the stator winding 60 is processed according to the method of connecting the stator winding 60. For example, in the case of star connection, one end of a three-phase (U-phase, V-phase, W-phase) stator winding 60 is connected in common to form a neutral point, and the other end The part is pulled out for connection to an external power source. In the present embodiment, three star-connected stator windings 60 are connected in parallel. 1 and 4, one end portions 61 (1) to 61 (3) of the stator winding 60 are respectively of a U phase, a V phase, and a W phase that form a neutral point. The one end of the stator winding 60 is bundled for each star connection. One end 61 (1) to 61 (3) of the stator winding 60 that forms a neutral point is usually covered with a connection point protection member. Although not shown in FIGS. 1 and 4, at the other end of the stator winding 60, three stator windings 60 of U phase, V phase, and W phase are bundled for each phase. Withdrawn outside.
One end 61 (1) to 61 (3) of the stator winding 60 corresponds to “one end of the stator winding housed in the housing member” of the present invention.
The method of connecting the stator windings 60, the number of stator windings 60 connected in parallel, and the like can be selected as appropriate.

In addition, the end insulating member 30 is provided with a storage space forming member 40 that forms a storage space 40 a that stores one end 61 (1) to 61 (3) of the stator winding 60. The configuration of the accommodation space forming member 40 is shown in FIGS. 8 is a perspective view of the accommodation space forming member 40, FIG. 9 is a sectional view taken along line IX-IX in FIG. 8, and FIG. 10 is a sectional view taken along line XX in FIG.
In the present embodiment, the accommodation space 40 a is formed by the outer wall member 32 and the accommodation space forming member 40 provided on the outer side in the radial direction from the outer wall member 32. The accommodation space 40a has an opening 40C on the side opposite to the end surface 20A (20B) of the stator core 20 along the axial direction (the side opposite to the end surface of the stator core 20 opens), and extends along the circumferential direction. Yes.
The housing space forming member 40 includes end wall members 41 and 42, a peripheral wall member 43, and a bottom wall member 44. The bottom wall member 44 is provided in parallel to the end surface 20A (20B) of the stator core 20 (including "substantially parallel") at a position facing the end surface 20A (20B) of the stator core 20. The peripheral wall member 43 extends outward in the radial direction from the outer wall member 32, along the circumferential direction (in parallel with the outer wall member 32 (including “substantially parallel”)), and from the bottom wall member 44 in the axial direction. Is extended in the direction opposite to the end face 20A (20B) of the stator core 20 along the direction. The end wall members 41 and 42 extend from the bottom wall member 44 in the opposite direction to the end surface 20A (20B) of the stator core 20 along the axial direction at positions separated from each other along the circumferential direction. 32 and the peripheral wall member 43 extend along the radial direction. That is, the accommodating space 40a is formed with the outer peripheral surface 32a of the outer wall member 32, the bottom wall surface 44a of the bottom wall member 44, the peripheral wall surface 43a of the peripheral wall member 43, and the end wall surfaces of the end wall members 41 and 42 as wall surfaces.
In the present embodiment, the outer wall member 32, the end wall members 41 and 42, the peripheral wall member 43, and the bottom wall member 44 correspond to the “plurality of wall members forming the accommodation space” of the present invention, and extend along the axial direction. The extended outer wall member 32, the peripheral wall member 43, and the end wall members 41 and 42 correspond to “a plurality of side wall members forming the accommodation space” of the present invention. Further, the outer peripheral surface 32a of the outer wall member 32, the end wall surfaces of the end wall members 41 and 42, the peripheral wall surface 43a of the peripheral wall member 43, and the bottom wall surface 44a of the bottom wall member 44 are “a plurality of wall surfaces forming an accommodation space”. The outer peripheral surface 32a of the outer wall member 32, the end wall surfaces of the end wall members 41 and 42, and the peripheral wall surface 43a of the peripheral wall member 43 that extend along the axial direction Corresponds to the “side wall surface”.

Here, as described above, when the electric motor according to the present embodiment is arranged above the compression mechanism and the compressor is configured, the mixed gas in which the cooling medium and the lubricating oil are mixed is the outer periphery of the stator core. The notch surface 28 and the case 70 are formed to flow through the notch 28a (cooling medium passage) extending along the axial direction.
In the present embodiment, the bottom surface 40A of the accommodation space forming member 40 (bottom wall member 44) is placed at an appropriate position in order to efficiently collect oil such as lubricating oil flowing through the notch 28a (cooling medium passage). It is arranged.
That is, as shown in FIGS. 1 and 2, the bottom surface 40A of the accommodation space forming member 40 (bottom wall member 44) (the surface facing the end surface 20A (20B) of the stator core 20 along the axial direction). Is disposed at a position facing the notch portion 28a formed on the end face 20A (20B) of the stator core 20 (a position where the mixed gas passes through the notch portion 28a). When the mixed gas that has passed through the cutout portion 28a hits the bottom surface 40A, the oil component such as lubricating oil contained in the mixed gas is liquefied, and the liquefied oil component is returned to the compression mechanism portion side (downward) through the cutout portion 28a. .
Furthermore, the bottom surface 40A of the accommodation space forming member 40 (bottom wall member 44) is disposed at a position separated from the end surface 20A (20B) of the stator core 20 by a set distance L along the axial direction. The set distance L is such that the oil contained in the mixed gas is liquefied when the mixed gas that has passed through the notch 28a hits the bottom surface 40A, and the cooling medium contained in the mixed gas causes the end surface 20A ( 20B) and the bottom surface 40A.

The outer wall member 32 is formed with a groove 34 for passing one end 61 (1) of the stator winding 60 wound around the tooth 22 into the accommodation space 40 a. One end 61 (1) of the stator winding 60 is accommodated in the accommodating space 40 a via the groove 34. At this time, one end 61 (1) of the stator winding 60 is accommodated in the accommodating space 40a in a state where movement in the accommodating space 40a is blocked.
In the present embodiment, one end of the stator winding 60 is filled with resin in a state in which one end 61 (1) of the stator winding 60 is accommodated in the accommodation space 40 a. The movement of the end 61 (1) in the accommodation space 40a is prevented.

Here, there is a possibility that the resin filled in the accommodation space 40a may come out of the accommodation space 40a from the opening 40C along the axial direction. When the resin escapes from the accommodation space 40a, the one end 61 (1) of the stator winding 60 also escapes from the accommodation space 40a together with the resin.
When the opening 40C is provided on the opposite side of the end surface 20A (20B) of the stator core 20 along the axial direction, an external force along the axial direction needs to be applied to the resin in order for the resin to escape from the opening 40C. There is. For this reason, it is possible to prevent the resin from coming out of the opening 40C by restricting the force along the axial direction from being applied to the resin. As a method for restricting the application of a force along the axial direction to the resin, a method of providing a recess for forming a recess in a wall surface extending along the axial direction among the wall surfaces forming the accommodation space 40a is considered. It is done.
In the present embodiment, a recess (notch) 40 b is provided in the outer peripheral surface 32 a of the outer wall member 32 by forming a notch surface 32 b in the outer peripheral surface 32 a of the outer wall member 32. The shape, position, and number of the cutout surface 32b (concave portion 40b) are aligned with the resin filled in the accommodation space 40a when a force in the direction of coming out of the opening 40C along the axial direction is applied to the resin. The force is set so as to be canceled by the notch surface 32b that comes into contact with the resin.

In the present embodiment, the accommodation space forming member 40 is integrally formed with resin together with the end insulating member 30.
Here, by forming the resin integrally, in order to form the notch surface 32b at the location corresponding to the accommodation space 40a on the outer peripheral surface 32a of the outer wall member 32, the mold for forming the notch surface 32b is inclined. Need to be placed. In the present embodiment, as shown in FIGS. 8 and 9, the mold is disposed obliquely from the peripheral wall member 43 side at a position corresponding to the accommodation space 40 a on the outer peripheral surface 32 a of the outer wall member 32. ing. Thereby, it can shape | mold easily compared with the case where a notch surface (concave part) is formed in the surrounding wall surface 43a of the surrounding wall member 43. FIG.
The peripheral wall surface 43b and the bottom wall surface 44b shown in FIGS. 8 and 9 are formed by using such a mold.
As a method of forming the notch surface 32b (recess 40b) on the outer peripheral surface 32a of the outer wall member 32, other methods can be used.

When the bottom surface 40A of the accommodation space forming member 40 is arranged in parallel (including “substantially parallel”) with the end surface 20A of the stator core 20, the mixed gas exiting through the cutout portion 28a is perpendicular to the bottom surface 40A (or approximately). Therefore, the external force acting on the bottom surface 40A by the mixed gas is large. In order to reduce the influence of the external force due to the mixed gas, for example, it is necessary to increase the strength of the housing space forming member 40 (bottom wall member 44) by increasing the thickness of the wall member constituting the housing space forming member 40. is there. This method increases the cost and makes it difficult to integrally mold the end insulating member 30 with resin.
An embodiment in which the strength of the housing space forming member can be increased by a simple design change while suppressing an increase in cost will be described with reference to FIGS. FIG. 11 shows a modified example of the accommodation space forming member 40 of the first embodiment. 11 is a perspective view of a modified example of the accommodation space forming member 40 of the first embodiment, FIG. 12 is a sectional view taken along line XII-XII in FIG. 11, and FIG. 13 is XIII- in FIG. It is XIII sectional view taken on the line.
In the present embodiment, the bottom surface 40A ′ of the accommodation space forming member 40 is inclined with respect to the end surface 20A of the stator core 20. The inclination direction of the bottom surface 40A ′ is set so that the distance from the end surface 20A of the stator core 20 increases from the inner side toward the outer side as viewed in a cross section along the radial direction (FIGS. 12 and 13). Yes. The inclination direction may be set such that the distance increases from the outside toward the inside along the radial direction, or the distance increases along the circumferential direction from one side to the other side. May be.
In the present embodiment, the bottom surface 40A ′ (bottom wall member 44) is set such that the distance between the opening of the notch 28a formed on the end surface 20A of the stator core 20 and the bottom surface 40A ′ is L. Is placed.

In the first embodiment, the cutout surface 32 a (recess 40 b) that prevents the resin from coming out of the opening 40 C of the accommodation space 40 a is formed on the outer peripheral surface 32 a of the outer wall member 32, but the peripheral wall surface 43 a of the peripheral wall member 43 is formed. A notch surface (concave portion) can also be formed in. In addition, a notch surface (concave portion) can be formed on the end wall surface of the end wall member 41 or 42. A second embodiment in which a notch surface (concave portion) is formed on the end wall surface of the end wall member will be described with reference to FIGS.
FIG. 14 is a perspective view of the end insulating member 130 used in the electric motor (stator) of the second embodiment as viewed from one side along the axial direction. 15 is a perspective view of the accommodation space forming member 140, and FIG. 16 is a cross-sectional view taken along line XVI-XVI of FIG.

The end insulating member 130 includes an inner wall member 131, an outer wall member 132, and a connecting member 133, similarly to the end insulating member 30 of the first embodiment.
Further, the accommodation space 140a for accommodating one end 61 (1) of the stator winding 60 is the outer wall member 132 and the outer side in the radial direction from the outer wall member 132, similarly to the accommodation space 40a of the first embodiment. And is formed by a housing space forming member 140 having end wall members 141 and 142, a peripheral wall member 143, and a bottom wall member 144. The accommodation space 140a has an opening 140C on the side opposite to the end surface 20A (20B) of the stator core 20 along the axial direction (the side opposite to the stator core 20 opens), and extends along the circumferential direction.

The present embodiment is different from the first embodiment in that a notch surface (concave portion) is formed on the end wall surface of the end wall member 141. In the present embodiment, as shown in FIG. 16, the end wall surface of the end wall member 141 on one side along the circumferential direction is along the circumferential direction of the opening 140 </ b> C as viewed in a cross section along the circumferential direction. It has notch surfaces 141a, 141b, 141c that form a recess 140b that is recessed in one direction along the circumferential direction from one end 140C1. Of the notch surfaces 141a, 141b, and 141c, the notch surface 141a disposed on the side opposite to the end surface 20A of the stator core 20 is inclined along the axial direction. The inclination direction of the notch surface 141a is such that the distance from the end surface 20A of the stator core 20 decreases as the distance from the one end portion 140C1 along the circumferential direction of the opening 140C increases in one direction along the circumferential direction. Is set to Accordingly, one end 61 (1) of the stator winding 60 that has passed through the groove 134 formed in the outer wall member 134 is inserted into the accommodating space 140a from the opening 140C, so that one end of the stator winding 60 is obtained. The end portion 61 (1) is accommodated in the recess 140b.
In the present embodiment, the end wall surface 142a of the other end wall member 142 along the circumferential direction is inclined so that a convex portion is formed. The inclination direction of the end wall surface 142a is closer to the end surface 20A (20B) of the stator core 20 as the opening 140C moves away from the other end portion 140C2 along the circumferential direction toward one direction along the circumferential direction. The distance is set to be short. Thereby, it becomes easier to insert the one end 61 (1) of the stator winding 60 into the recess 140b.
The housing space 140a is filled with resin in a state where one end 61 (1) of the stator winding 60 is inserted into the recess 140b in the housing space 140a.
In the present embodiment, the resin filled in the accommodation space 140a comes into contact with the notch surface 141a, thereby preventing the resin from coming out of the opening 140A of the accommodation space 140a.

In the second embodiment, the bottom surface 140A of the accommodation space forming member 140 is arranged in parallel (including “substantially parallel”) with the end surface 20A of the stator core 20, but the modified example of the first embodiment and Similarly, it can be inclined with respect to the end face 20 </ b> A of the stator core 20.
An embodiment in which the strength of the housing space forming member can be increased by a simple design change while suppressing an increase in cost will be described with reference to FIG. FIG. 17 is a perspective view of a modified example of the accommodation space forming member 140 of the second embodiment.
In the present embodiment, the bottom surface 140A ′ of the accommodation space forming member 140 is inclined with respect to the end surface 20A of the stator core. As in the modification of the first embodiment, the inclination direction of the bottom surface 140A ′ is long from the end surface 20A of the stator core 20 from the inside to the outside as seen in the cross section along the radial direction. It is set to be. The inclination direction can be appropriately set as described above.

Another embodiment (third embodiment) in which a notch surface (concave portion) is formed on the end wall surface of the end wall member of the housing space forming member will be described with reference to FIGS.
FIG. 18 is a perspective view of the end insulating member 230 used in the electric motor (stator) of the third embodiment as viewed from one side along the axial direction. 19 is a perspective view of the accommodation space forming member 240, and FIG. 20 is a sectional view taken along line XX-XX in FIG.
The end insulating member 230 includes an inner wall member 231, an outer wall member 232, and a connecting member 233, similarly to the end insulating member 30 of the first embodiment.
The accommodation space 240a for accommodating one end 61 (1) of the stator winding 60 is the outer wall member 232 and the outer side in the radial direction from the outer wall member 232 in the same manner as the accommodation space 40a of the first embodiment. The housing space forming member 240 includes end wall members 241 and 242, a peripheral wall member 243, and a bottom wall member 244. The accommodation space 240a has an opening 240C on the side opposite to the end surface 20A of the stator core 20 along the axial direction (the side opposite to the stator core 20 opens), and extends along the circumferential direction.

In the present embodiment, as shown in FIG. 20, the end wall surface 241 a of the end wall member 241 on one side along the circumferential direction is one direction along the circumferential direction as viewed in a cross section along the circumferential direction. It has notch surfaces 241b, 241c, and 241d that form recesses 240b that are recessed in the surface.
The housing space 140a is filled with resin in a state where one end 61 (1) of the stator winding 60 is inserted into the recess 240b in the housing space 240a.
The hole 246 formed in the end wall member 242 is formed by arranging a mold for forming the recess 240b when the end insulating member 230 having the accommodating space forming member 240 is integrally formed with resin. Is formed.
In the present embodiment, the resin filled in the accommodation space 240a abuts on the cut surface 241b forming the recess 240b, thereby preventing the resin from coming out of the opening 240C of the accommodation space 240a.

In the third embodiment, the bottom surface 240A of the accommodation space forming member 240 is arranged in parallel (including “substantially parallel”) with the end surface 20A of the stator core 20, but a modification of the first embodiment and Similarly, it can be inclined with respect to the end face 20 </ b> A of the stator core 20.
An embodiment in which the strength of the housing space forming member can be increased by a simple design change while suppressing an increase in cost will be described with reference to FIG. FIG. 21 is a perspective view of a modified example of the accommodation space forming member 240 according to the third embodiment.
In the present embodiment, the bottom surface 240A ′ of the accommodation space forming member 240 is inclined with respect to the end surface 20A of the stator core 20. The inclination direction of the bottom surface 240A ′ is a long distance from the end surface 20A of the stator core 20 from the inner side toward the outer side as seen in the cross section along the radial direction, as in the modification of the first embodiment. It is set to be. The inclination direction can be appropriately set as described above.

In the first to third embodiments, by forming a notch surface (concave portion) on at least one of the side wall surfaces extending in the axial direction among the wall surfaces forming the accommodation space, Resin that has been prevented from coming out of the opening of the accommodation space, but has been filled in the accommodation space by providing an extension member extending along the direction intersecting the axial direction in the accommodation space. Can be prevented from coming out of the opening of the accommodation space.
The electric motor (stator) of the fourth embodiment will be described with reference to FIGS. FIG. 22 is a perspective view of the end insulating member 330 used in the electric motor (stator) of the fourth embodiment, as viewed from one side along the axial direction. 23 is a perspective view of the accommodation space forming member 340, FIG. 24 is a sectional view taken along line XXIV-XXIV in FIG. 23, and FIG. 25 is a sectional view taken along line XXV-XXV in FIG.

The end insulating member 330 includes an inner wall member 331, an outer wall member 332, and a connecting member 333, similarly to the end insulating member 30 of the first embodiment.
The accommodation space 340a that accommodates one end 61 (1) of the stator winding 60 is radially outer than the outer wall member 332 and the outer wall member 332 in the same manner as the accommodation space 40a of the first embodiment. The housing space forming member 340 includes end wall members 341 and 342, a peripheral wall member 343, and a bottom wall member 344. The accommodation space 340a has an opening 340C on the side opposite to the end surface 20A of the stator core 20 along the axial direction (the side opposite to the stator core 20 opens), and extends along the circumferential direction.
In the present embodiment, an extending member extending in the radial direction (direction intersecting the axial direction) between the outer peripheral surface 332a of the outer wall member 332 and the peripheral wall surface 343a of the peripheral wall member 343 in the accommodation space 340a. 347 is provided. As shown in FIG. 24, the extending member 347 is formed at a position away from the bottom wall surface 344a, that is, at a position where a space is formed between the bottom wall surface 344a and the extending member 347.
The housing space 340a is filled with resin in a state where one end 61 (1) of the stator winding 60 is passed through the space between the bottom wall surface 344a and the extending member 347.
The hole 348 formed in the peripheral wall member 343 forms a space between the bottom wall surface 344a and the extending member 347 when the end insulating member 330 having the accommodation space forming member 340 is integrally formed with resin. It is formed by arranging metal fittings to do.
In the present embodiment, the resin filled in the accommodation space 340a comes into contact with the extending member 347, thereby preventing the resin from coming out of the opening 340C of the accommodation space 340a. Further, one end 61 (1) of the stator winding 60 is passed between the bottom wall surface 344 a and the extending member 347, so that one end 61 (1) of the stator winding 60 is The movement can be prevented more reliably.

In the fourth embodiment, the bottom surface 340A of the accommodation space forming member 340 is arranged in parallel (including “substantially parallel”) with the end surface 20A of the stator core 20, but a modification of the first embodiment and Similarly, it can be inclined with respect to the end face 20 </ b> A of the stator core 20.
An embodiment in which the strength of the housing space forming member can be increased by a simple design change while suppressing an increase in cost will be described with reference to FIGS. 26 is a perspective view of a modified example of the accommodation space forming member 340 according to the fourth embodiment, FIG. 27 is a sectional view taken along line XXVII-XXVII in FIG. 26, and FIG. 28 is a sectional view taken along line XXVIII- in FIG. It is XXVIII sectional view taken on the line.
In the present embodiment, the bottom surface 340A ′ of the accommodation space forming member 340 is inclined with respect to the end surface 20A of the stator core 20. As in the modified example of the first embodiment, the inclination direction of the bottom surface 340A ′ has a longer distance from the end surface 20A of the stator core 20 from the inner side toward the outer side when viewed in a cross section along the radial direction. It is set to be. The inclination direction can be appropriately set as described above.

In the fourth embodiment and its modification, both ends of the extending member 347 extending in the radial direction are connected to the outer peripheral surface 332a of the outer wall member 332 and the peripheral wall surface 343a of the peripheral wall member 343 to form a bridge. However, only one end of the extending member 347 may be connected to the outer peripheral surface 332a of the outer wall member 332 or the peripheral wall surface 343a of the peripheral wall member 343. That is, at least one end of the extending member 347 only needs to be connected to the outer peripheral surface 332a of the outer wall member 332 or the peripheral wall surface 343a of the peripheral wall member 343. Even in this case, it is possible to prevent the resin filled in the accommodation space 340a from coming out of the opening 340C of the accommodation space 340a by coming into contact with the extending member 347.
Further, one end 61 (1) of the stator winding 60 is passed between the bottom wall surface 344a and the extending member 347, but can be accommodated in an appropriate location in the accommodation space 340a. Even in this case, the resin filled in the accommodation space 340a abuts on the extending member 347, so that the resin can be prevented from coming out of the opening 340C of the accommodation space 340a.
Further, although the extending member 347 is provided so as to extend along the radial direction, the extending member 347 only needs to extend along a direction intersecting the axial direction. For example, an extending member extending along the circumferential direction from at least one of the end wall surfaces of the end wall members 341 and 342 may be provided.
The shape, position, number, and the like of the extending member 347 can be changed as appropriate.

In the first to third embodiments, as the escape prevention structure for preventing the resin filled in the accommodation space from coming out of the opening of the accommodation space, among the wall surfaces forming the accommodation space, in the axial direction Although a notch surface (recess) is formed in at least one of the side wall surfaces extending along the side wall, a hole may be formed.
An electric motor (stator) according to a fifth embodiment will be described with reference to FIGS. FIG. 29 is a perspective view of the end insulating member 430 used in the electric motor (stator) according to the fifth embodiment, as viewed from one side along the axial direction. 30 is a perspective view of the accommodation space forming member 440, and FIG. 31 is a cross-sectional view taken along the line XXXI-XXXI of FIG.

The end insulating member 430 includes an inner wall member 431, an outer wall member 432, and a connecting member 433, similarly to the end insulating member 30 of the first embodiment.
Further, the accommodation space 440a that accommodates one end portion 61 (1) of the stator winding 60 is radially outer than the outer wall member 432 and the outer wall member 432, similarly to the accommodation space 40a of the first embodiment. The housing space forming member 440 includes end wall members 441 and 442, a peripheral wall member 443, and a bottom wall member 444. The accommodation space 440a has an opening 440C on the side opposite to the end surface 20A of the stator core 20 along the axial direction (the side opposite to the stator core 20 opens), and extends along the circumferential direction.
In the present embodiment, a hole 449 is provided in the peripheral wall member 443 along the radial direction.
The housing space 440a is filled with resin in a state in which one end 61 (1) of the stator winding 60 is housed in the housing space 440a.
In the present embodiment, the resin that has flowed into the hole 449 of the peripheral wall member 443 comes into contact with the hole 449, so that the resin filled in the storage space 440a is prevented from coming out of the opening 440C of the storage space 440a.

In the fifth embodiment, the bottom surface 440A of the accommodation space forming member 440 is arranged in parallel (including “substantially parallel”) with the end surface 20A of the stator core 20, but the modification example of the first embodiment and Similarly, it can be inclined with respect to the end face 20 </ b> A of the stator core 20.
An embodiment in which the strength of the housing space forming member can be increased by a simple design change while suppressing an increase in cost will be described with reference to FIGS. FIG. 32 is a perspective view of a modified example of the accommodation space forming member 440 according to the fifth embodiment, and FIG. 33 is a sectional view taken along line XXXIII-XXXIII in FIG. 32.
In the present embodiment, the bottom surface 440A ′ of the accommodation space forming member 440 is inclined with respect to the end surface 20A of the stator core 20. As in the modified example of the first embodiment, the inclination direction of the bottom surface 440A ′ is a long distance from the end surface 20A of the stator core 20 from the inner side toward the outer side as viewed in the cross section along the radial direction. It is set to be. The inclination direction can be appropriately set as described above.

  In the fourth embodiment and its modification, the peripheral wall member 443 is provided with a hole, but it can also be provided in any of the outer wall member 432 and the end wall members 441 and 442. That is, by providing a hole in at least one of the wall members extending in the axial direction among the wall members forming the accommodation space 440a, the resin filled in the accommodation space 440a is prevented from coming out of the opening 440C. Can be prevented.

The present invention is not limited to the configuration described in the embodiment, and various changes, additions, and deletions are possible.
Although the passage (cooling medium passage) is configured by the cutout surface and the case that are formed by cutting the outer peripheral surface of the stator core along the axial direction, the passage may be configured by a hole formed in the stator core along the axial direction. it can.
The position and shape of the housing space are appropriately set according to the position and shape of the passage (cooling medium passage) provided in the stator core.
Although the housing space is formed using the outer wall member (the outer wall member is used as a part of the housing space forming member), the housing space can also be formed without using the outer wall member (only by the housing space forming member).
The present invention may be configured as an electric motor, or may be configured as a compressor in which a compression mechanism unit and an electric motor that drives the compression mechanism unit are disposed above the compression mechanism unit.

In addition, this invention can also be comprised as follows.
For example, "(Aspect 1) The electric motor according to any one of claims 1 to 4, wherein the accommodation space is formed by wall surfaces of the plurality of wall members, and among the wall surfaces forming the accommodation space, A part of at least one wall surface extending along the axial direction is recessed so as to form a recess, and in a state where one end of the stator winding is accommodated in the accommodation space, An electric motor characterized in that the housing space is filled with resin, and the recess is formed so that the resin filled in the housing space is prevented from coming out of the opening of the housing space. Can be configured.
Further, “(Aspect 2) In the electric motor according to Aspect 1, the wall surface forming the accommodation space includes the outer peripheral surface of the outer wall member, and the outer peripheral surface of the outer wall member forms the recess. It can be configured as an electric motor characterized by being recessed.
Further, “(Aspect 3) is the electric motor according to Aspect 1, wherein among the wall surfaces forming the housing space, at least one of the wall surfaces extending along the axial direction and spaced apart along the circumferential direction. The recess is recessed so as to form a recess, and the recess is inclined in the circumferential direction on the side opposite to the end face of the stator core along the axial direction when viewed in a cross section along the circumferential direction. An electric motor characterized by the above. "
Further, "(Aspect 4) is the electric motor according to any one of claims 1 to 4, wherein the housing space is formed by wall surfaces of the plurality of wall members, and the wall surface forming the housing space includes A bottom wall surface of the bottom wall member, and a side wall surface of the plurality of side wall members extending in the opposite direction to the end surface of the stator core from the bottom wall surface along the axial direction, and located away from the bottom wall surface Further, an extending member extending from at least one of the plurality of side wall surfaces along a direction intersecting the axial direction is provided, and one end portion of the stator winding is the receiving space. The electric motor is characterized in that the housing space is filled with resin in a state of being housed in the housing.
Further, “(aspect 5) is the electric motor according to aspect 4, wherein one end of the stator winding is passed between the bottom wall surface of the housing space and the extending member. Can be configured as an electric motor. "
Further, it can be configured as “(Aspect 6) The electric motor according to Aspect 4 or 5, wherein the extending member is connected to a side wall surface at both ends”.
Further, it can be configured as “(Aspect 7) The electric motor according to any one of Aspects 4 to 6, wherein the extending member extends along the radial direction.”
Further, "(Aspect 8) is the electric motor according to any one of claims 1 to 4, wherein the housing space is formed by wall surfaces of the plurality of wall members, and the shaft of the plurality of wall members is a shaft. A hole is provided in at least one wall member extending in the direction, and the housing space is filled with resin in a state where one end of the stator winding is housed in the housing space. It can be configured as an electric motor that is characterized by

DESCRIPTION OF SYMBOLS 10 Stator 20 Stator core 21 Yoke 22 Teeth 22a Teeth base 22b Teeth tip 22c Teeth tip 23 Slot 25 Slot insulation member 26 Interphase insulation member 28 Notch surface 28a Notch (cooling medium passage)
30, 50, 130, 230, 330, 430 End insulating member 31, 131, 231, 331, 431 Inner wall member 30A, 130A, 230A, 330A, 430A Bottom surface 31a, 131a, 231a, 331a, 431a of end insulating member Inner peripheral surface 32, 132, 232, 332, 432 Outer wall member 32a, 132a, 232a, 332a, 432a Outer peripheral surface 32b Notch surface 33, 133, 233, 333, 433 Connecting member 34, 134, 234, 334, 434 Groove 35 Convex portion 40, 140, 240, 340, 440 Housing space forming member 40a, 140a, 240a, 340a, 440a Housing space 40b, 140b, 240b Notch (recess)
40A, 40A ', 140A, 140A', 240A, 240A ', 340A, 340A', 440A, 440A ', bottom 41, 42, 141, 142, 241, 242, 341, 342, 441, 442 end of the accommodation space formation Wall members 43, 143, 243, 343, 443 Peripheral wall members 43a, 43b, 343a, 443a Peripheral wall surfaces 44, 144, 244, 344, 444 Bottom wall members 44a, 144a, 244a, 344a, 444a Bottom wall surface 60 Stator winding 61 (1) to 61 (3) One end of the stator winding (end forming the neutral point)
70 cases (sealed containers)
141a, 141b, 141c, 241b, 241c, 241d Notched surface 142a, 241a, 242a End wall surface 246 Hole 347 Extension member 348 Hole 449 Hole 500 Compressor 510 Suction pipe 520 Discharge pipe 600 Compression mechanism section 610 Cylinder 620 Eccentric rotor 630 Lubrication Oil clamp 700 Electric motor 710 Stator 720 Stator core 730 Stator winding 750 Rotor 760 Rotor core 770 Rotating shaft 800 Case (sealed container)
900 Accumulator

Claims (5)

A stator and a rotor,
The stator includes a stator core having end faces on both sides along the axial direction, end insulating members disposed on both sides along the axial direction with respect to the stator core, a stator winding, With a case that houses the stator core,
The other end face along the axial direction of the stator core is an electric motor arranged above the end face on one side along the axial direction along the vertical direction,
The stator has a passage extending along an axial direction, and the passage has openings on both end faces of the stator core;
The end insulating member disposed on the other side along the axial direction with respect to the stator core has a housing space forming member that forms a housing space that houses one end of the stator winding. And
The housing space forming member has a bottom surface facing the other end surface of the stator core, and the bottom surface is axially formed from an opening of the passage on the other end surface of the stator core. An electric motor characterized in that a gap is formed between the opening of the passage and the bottom surface on the other side along the line. The electric motor according to claim 1,
The motor is characterized in that the passage is formed by a cutout surface formed by cutting out an outer peripheral surface of the stator core and the case. The electric motor according to claim 1 or 2,
The accommodation space is formed such that the opposite side of the other end face of the stator core is open along the axial direction and extends along the circumferential direction. It is an electric motor given in any 1 paragraph of Claims 1-3,
Each of the end insulating members, as viewed in a cross section perpendicular to the axial direction, is arranged with a plurality of inner wall members extending along the circumferential direction and radially outward from the inner wall member, along the circumferential direction. An outer wall member that extends, and a plurality of connecting members that extend in the radial direction and connect the inner wall member and the outer wall member;
The electric motor, wherein the outer wall member is used as a part of the housing space forming member.   It is a compressor provided with the electric motor which drives the said compression mechanism part arrange | positioned above a compression mechanism part and the said compression mechanism part, Comprising: As the said electric motor, The electric motor of any one of Claims 1-4 The compressor characterized by using.

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