JP4550533B2 - Electric motor stator and compressor and refrigeration cycle apparatus - Google Patents

Description

  The present invention relates to a stator for an electric motor with improved shape and insertion position of an insulating member that ensures insulation between different phases in a multi-phase motor, and insulation between a main winding and an auxiliary winding in a single-phase motor. The present invention relates to a compressor used, and a refrigeration cycle apparatus using the compressor.

  Conventionally, in a stator of an electric motor, each phase is insulated by interposing an insulating paper between phases of both coil ends. The conventional insulator between each phase is composed of a pair of two insulating papers that insulate the phases of the two coil ends of the stator, and is connected by a plurality of linear connecting members to form an insulator. .

  For the assembly of three-phase motors, insert an outer phase coil into the iron core, mold it to expand the coil end in the outer diameter direction, and then insert multiple connecting parts of interphase insulators into predetermined slots. Thus, a pair of coil end insulating portions are arranged along the inner periphery of the coil end of the outer phase coil, and then the intermediate phase coil is inserted, and the coil end is placed inside the coil end insulating portion of the interphase insulator. Place around the circumference.

  Thereafter, the intermediate phase coil is formed by the same procedure, the interphase insulator that insulates between the inner phase coils, and the inner phase coil is inserted, and the interphase insulator is inserted between the coil ends of the three-phase coils. Is placed. In addition, in the motor in which the coils are arranged in two phases, there is no insertion of an interphase insulator that insulates between the middle phase coil and the middle and inner phase coils. An interphase insulator is disposed therebetween.

  As for the coil insertion position of the conventional three-phase motor and the insertion position of the interphase paper coupling portion, the coupling portion is inserted at a position where the intermediate phase coil or the inner phase coil is later inserted. Insulation between the intermediate phase coil and the internal phase coil is performed by an insulating member (one connection portion) different from the insulation between the outer phase coil and the intermediate phase coil having two connection portions.

  A three-phase stator in which different phases of the coil ends of the stator winding projecting outward from the both end faces of the stator core are insulated by an insulating member. Among the coils sandwiching the insulating paper, there is a coil that is inserted into a slot into which an inner coil is inserted, and the connecting portion is prevented from popping out by this coil (for example, see Patent Document 1).

  In addition, in the interphase insulating member of the electric motor that inserts an insulating member into the slot of the iron core to store the coil, connects both ends of the pair of insulating paper with a thread, and insulates the different phase coils at both coil ends, the pair of insulating paper At least one end of each of the two cores is connected with two yarns, the interval between the two yarns is made larger than the maximum interval between the outer corner ends of the bottom portions between adjacent slots of the iron core, and the yarn straddles the tip of the iron core teeth. There is also an interphase insulating member for an electric motor that is inserted into adjacent slots and disposed in the slot in a state where the distance between the pair of yarns is expanded (see, for example, Patent Document 2).

In addition, in the interphase insulator formed by connecting a pair of coil end insulating parts that insulate between different phases of the coil ends of the motor by a plurality of connecting legs inserted into the slots, the connecting legs are prevented from jumping out of the slots. Therefore, one or several predetermined connecting legs are made wider than the others.
Further, predetermined one or several of the plurality of connecting legs are made non-parallel to other objects. Of the plurality of connecting legs, the portion to be formed wide or non-parallel is determined by conditions such as the motor coil design specifications and coil end molding specifications, and the coils are generally arranged in three phases. In the case of an electric motor, a connecting leg or the like located in a slot in which an intermediate phase coil is not inserted in a later step in an interphase insulator that insulates between the outer and intermediate phases, and in the case of an electric motor in which coils are arranged in two phases, an outer phase coil For example, a connecting leg positioned in a slot having a large space factor in the slot corresponds to this.
One or all of the connecting legs of the plurality of legs are tapered so that the width gradually increases from one side of the coil end insulating portion to the other. The part where the tapered connecting leg is provided may be the same part as the above-mentioned wide, and when all the connecting legs are tapered, the wide side is arranged on the coil end side to which a large external force is applied during molding. (For example, refer to Patent Document 3).
Japanese Utility Model Publication No. 6-2955 JP 59-172942 A Japanese Utility Model Publication No. 3-21946

The connecting part of the interphase insulator of the conventional electric motor is a thin strip for insertion into the slot, and when forming the coil, the insulating member is sandwiched between the coils and receives a large external force, so the connecting part is stretched or cut As a result, the position of the insulating member may shift, and insulation by the insulating member at the coil end may be insufficient. This phenomenon often occurs particularly at the coil rising portion from the stator core.
In addition, there is a problem that the insulating member leaks due to significant deformation of the coil end and the insulating member is twisted or warped, resulting in a layer short circuit.

  The present invention has been made to solve the above-described problems, and when a coil end is molded, even if the insulating member moves, the coils of different phases do not come into contact with each other, and a layer short circuit can be prevented. An object of the present invention is to provide a stator for an electric motor that can be used, a compressor that uses the stator for an electric motor, and a refrigeration cycle apparatus that uses the compressor.

The stator of the electric motor according to the present invention is a stator of an electric motor in which a coil is inserted into a slot of the stator core, and an insulating member is used to insulate between different phases of coil ends formed at both axial ends of the stator core. the insulating member includes an insulating portion for insulating the different phase of the coil end, and a plurality of connecting portions for connecting the insulating portion, one of the connecting portion even without least includes a consolidated portion of the adjacent insulating members, Or it is inserted so that it may overlap with its other connection part in the same slot.

The stator of the electric motor according to the present invention can prevent a layer short circuit by preventing the coils of different phases from coming into contact with each other even when the insulating member moves during coil end molding.

Embodiment 1 FIG.
1 to 14 are diagrams showing Embodiment 1, FIG. 1 is a side view of a stator, FIG. 2 is a configuration diagram of a coil end winding of a three-phase four-pole stator with an insulating member inserted, and FIG. 3 is a coil 4 is an enlarged view of the insertion position of the first insulating member inserted between the outer phase coil and the middle phase coil at the end and the coil end winding, and FIG. 4 is a second diagram inserted between the middle phase coil and the inner phase coil of the coil end. FIG. 5 is a plan view of the first insulating member inserted between the outer phase coil and the middle phase coil, and FIG. 6 is a diagram between the middle phase coil and the inner phase coil. 7 is a plan view of the second insulating member to be inserted, FIG. 7 is a plan view of the first insulating member provided with a notch in the lead side insulating portion, and FIG. 8 is a first view in which a notch is provided in the anti-lead side insulating portion. FIG. 9 is a plan view of the first insulating member, in which the lead side insulating portion is indicated on the lead side, and FIG. 0 is a plan view of a first insulating member with the anti-lead side indicated on the anti-lead side insulating portion, FIG. 11 is a plan view of a second insulating member provided with a notch in the lead side insulating portion, and FIG. FIG. 13 is a plan view of a second insulating member having a lead-side insulating portion provided with a notch, FIG. 13 is a plan view of the second insulating member having a lead-side indication on the lead-side insulating portion, and FIG. 14 is an anti-lead-side insulating portion. It is a top view of the 2nd insulating member which carried out the display of the non-lead side.

  As shown in FIG. 1, the stator 1 has a coil 4 inserted into a stator core 2 formed by laminating electromagnetic steel plates having a thickness of 0.2 to 0.7 mm, and is insulated by an insulating member described later. The coil end 5 is tied and tied with a thread 13. However, there are some which do not have the binding thread 13. A lead wire 14 is connected to the end of the coil 4.

  In the coil ends 5 formed at both ends of the stator core 2, the side to which the lead wire 14 is connected is referred to as a lead side coil end, and the opposite side is referred to as an anti-lead side coil end.

  For example, in many of the hermetic compressors used in the refrigeration cycle, the electric motor is positioned at the upper part inside the hermetic container, and the lead wire 14 is connected to the terminal at the upper part of the hermetic container. In many cases, welding for sealing the sealed container is also on the top of the sealed container.

Therefore, the lead side coil end is on the upper side and the anti-lead side coil end is on the lower side. The lead-side coil end needs to be separated from the welded portion of the sealed container, and the lead-side coil end inevitably has a small outer diameter and is elongated in the axial direction.
Further, since the anti-lead side coil end may approach the sealed container, it is formed so as to have a short axial length and expand in the outer peripheral direction.

  As shown in the block diagram of the coil end winding of the three-phase four-pole stator with the insulating member inserted in FIG. 2, the outer phase coil is first inserted into the bottom of the slot 3. And a coil end is shape | molded (it may not shape | mold). Next, in this example, the two first insulating members 6 a are assembled by inserting the connecting portions 7 (indicated by black dots) into the slots 3.

  The first insulating member 6a has a shape as shown in FIG. 5, and has two connecting portions 7 at both ends and one connecting portion 7 at the center. Since the axial length of the lead-side coil end is longer than that of the anti-lead-side coil end, the lead-side insulating portion 8a is made longer in the axial direction than the anti-lead-side insulating portion 8b.

  Returning to FIG. 2, the two connecting portions 7 at one end of the first insulating member 6 a are placed in the center where the coil 4 of the slot 3 (six) corresponding to the coil 4 of a certain pole does not enter. Insert into the two. In this case, as shown in the drawing, the two connecting portions 7 at the other end are formed by the coils 4 in the slots 3 (six) corresponding to the coils 4 of another pole facing the coils 4 of a certain pole. It is inserted into two that are shifted by one from the center that does not enter.

  Next, the other first insulating member 6a is inserted so that the outermost connecting portion 7 of the two first insulating members 6a enters and overlaps the same slot 3 (see FIG. 3). ).

  Next, the intermediate phase coil is inserted into the slot 3 to form a coil end. Then, the two second insulating members 6 b are assembled by inserting the connecting portion 7 into the slot 3.

  The second insulating member 6b has a shape as shown in FIG. 6, and has two connecting portions 7 at both ends and two connecting portions 7 at the center. And, like the first insulating member 6a, the axial length of the lead side coil end is longer than that of the anti-lead side coil end, and accordingly, the lead side insulating portion 8a is made to be longer than the anti-lead side insulating portion 8b. It is long in the axial direction.

  As shown in FIG. 4, the two connecting portions 7 at the end portions of the single second insulating member 6b are inserted into the slots 3 in which the outer phase coil and the intermediate phase coil do not enter. Then, the two connecting portions 7 at the ends of the other second insulating member 6 b are inserted so as to overlap the same slot 3.

  Finally, the internal phase coil is inserted into the slot 3, the coil end is molded, the coil end 5 is tied with a binding thread 13 if necessary, and the lead wire 14 is connected to the end of the coil 4 to complete the stator 1. To do.

  As a guideline for the dimensions of the first insulating member 6a and the second insulating member 6b, the width of the connecting portion 7 is about 1 mm smaller than the dimension of the widest portion in the circumferential direction of the slot 3 and is the outermost side of the insulating member. The dimension between the connecting portions 7 is obtained by dividing the length of the arc whose radius is the farthest distance from the stator center of the slot 3 by the number of insulating members necessary for insulating between certain phases (two in this example). The length of the lead-side insulating portion 8a and the anti-lead-side insulating portion 8b in the circumferential direction is such that the length of the outer circumference of the molded coil end is insulated between certain phases. For this reason, it is preferable that the length is divided by one slot to two slots by the length divided by the number of insulating members necessary (two in this example).

Accordingly, since the width of the connecting portion 7 is wider than that of the slot opening portion, the insulating member 6 does not jump out of the slot 3 after being inserted into the slot 3.
Further, as shown in FIGS. 5 and 6, the first insulating member 6a and the second insulating member 6b are symmetrical in order to eliminate an insertion error, and have a long axial length at both coil ends. The lead end insulating portion 8a at the coil end is widened.

  When the coil end 5 is formed, the first insulating member 6a and the second insulating member 6b are not particularly insulated because the connecting portion 7 extends and the boundary between the connecting portion 7 and the insulating portion becomes insufficiently insulated. However, at least one of the connecting portions 7 at the ends of the adjacent insulating members is inserted into the same slot 3 and overlapped so that the coils 4 between the phases do not come into contact with each other at the boundary between the connecting portion 7 and the insulating portion. The length of the insulating member is sufficiently secured so as not to cause insufficient insulation.

The material of the first insulating member 6a and the second insulating member 6b is, for example, an insulating thin film such as PET (polyethylene terephthalate), PPS (polyphenylene sulfide), PEN (polyethylene naphthalate), aromatic aramid paper or the like. Although it is formed by punching the entire plate, the coil end insulating part and the connecting part 7 may be separately formed and then bonded.
Further, the insulating portion and the connecting portion 7 may be inserted by bonding (welding) different materials.
Moreover, you may form the connection part 7 with a thread | yarn and other elongate linear connection members.

As shown in FIGS. 7 to 14, in order to eliminate an insertion error of the insulating member, a small notch 12 may be provided or displayed on the lead side or the non-lead side.
Moreover, although this example is a case where two insulation members are used between each phase, one piece may be sufficient and it is good also as three or more pieces. Moreover, although this example is a case of three phases, it may be single phase or multiphase.

  According to the first embodiment, at the time of forming the coil end, even if the first insulating member 6a and the second insulating member 6b are displaced due to an external force, at least one of the connecting portions 7 at the ends of the adjacent insulating members is The length of the insulating member is secured so as not to be insufficiently insulated around the boundary between the connecting portion 7 and the insulating portion so as to be inserted into the same slot 3 and overlapped. Short circuit can be prevented.

Embodiment 2. FIG.
15 to 17 are diagrams showing the second embodiment. FIG. 15 is a configuration diagram of a coil end winding of a single-phase two-pole stator with an insulating member inserted, FIG. 16 is a plan view of the insulating member, and FIG. It is a top view which shows the other example of a member.

  In the single-phase motor shown in FIG. 15, the space between the main winding and the auxiliary winding is referred to as the phase. The stator 1 includes a stator core 2 configured by laminating electromagnetic steel plates having a thickness of 0.2 to 0.7 mm, a coil 4 inserted into the slot 3, and an insulating member 6 inserted between the phases. Have. The coil end 5 is formed by passing the coil 4 in a circular arc shape from the slot 3 to the other slot 3. The connecting portion 7 of the insulating member 6 is indicated by a black dot.

  In the single-phase motor shown in FIG. 15, first, the main winding is inserted into the slot 3. The insulating member 6 is assembled after the coil end 5 is formed. Here, for example, two insulating members 6 are used. As shown in FIG. 16, the shape of the insulating member 6 is connected by two connecting portions 7 (four in total) having lead-side insulating portions 8a and anti-lead-side insulating portions 8b provided at the ends. As in the first embodiment, the lead-side insulating portion 8a is longer in the axial direction than the anti-lead-side insulating portion 8b.

  The two insulating members 6 insulate the main winding (outer phase) and the auxiliary winding (inner phase), the two connecting portions 7 at the end of one insulating member 6, and the end of the other insulating member 6 The connecting portions 7 are alternately inserted into the slots 3 so that the insulating members 6 overlap each other. Therefore, the interval between the connecting portions 7 is 2 slots in this example. However, the interval between the connecting portions 7 may be larger than two slots.

  Thereafter, the auxiliary winding is inserted into the slot 3, the coil end 5 is formed, tied with a binding thread if necessary, and the lead wire is connected to the end of the coil 4 to complete the stator 1.

  As a guideline for the dimensions of the insulating member 6, the width of the connecting portion 7 is about 1 mm smaller than the dimension of the widest portion in the circumferential direction of the slot 3, and the dimension between the connecting portions 7 on the outermost side of the insulating member 6 is the slot 3. The length of the arc whose radius is the furthest distance from the stator center is divided by the number of insulating members 6 required to insulate the phases (two in this example), and the length is increased by 2 slots The circumferential length of the lead-side insulating portion 8a and the anti-lead-side insulating portion 8b is the length obtained by dividing the outer peripheral length of the molded coil end 5 by the number of insulating members 6 (two in this example). The length should be longer by 2 slots. Accordingly, since the width of the connecting portion 7 of the insulating member 6 is wider than that of the slot opening, the insulating member 6 does not jump out of the slot 3 after being inserted into the slot 3.

  Further, in order to eliminate an insertion error, the insulating member 6 is left-right symmetrical, and the lead-side insulating portion 8a of the lead-side coil end having a large axial length at both coil ends is widened.

  When forming the coil end 5, the insulating member 6 is not particularly insulated at the boundary between the connecting portion 7 and the insulating portion, particularly when the connecting portion 7 extends, so that the inter-phase coil 4 does not contact even if the insulating member 6 is displaced. Thus, the two connecting portions 7 at the end of one insulating member 6 and the connecting portion 7 at the end of the other insulating member 6 are alternately inserted into the slot 3 so that the insulating member 6 overlaps. In this configuration, the length of the insulating member is sufficiently secured.

The material of the insulating member 6 is the same as that of the first embodiment, and is made of an insulating thin plate material such as PET (polyethylene terephthalate), PPS (polyphenylene sulfide), PEN (polyethylene naphthalate), and aromatic aramid paper. Although the whole is formed by punching, the insulating portion and the connecting portion 7 may be separately formed and then bonded.
Further, the insulating portion and the connecting portion 7 may be inserted by bonding (welding) different materials.
Moreover, you may form the connection part 7 with a thread | yarn and other elongate linear connection members.

Further, the insulating member 6 may not be symmetrical, and as shown in FIG. 17, the widths of both insulating portions may be equal.
Moreover, although the example shown here is a case where two insulating members are used, it may be one or may be a plurality of three or more.
Further, although a single phase motor has been described as an example, a multiphase motor may be used.

  According to the second embodiment, the distance between the connecting portions 7 at both ends of the insulating member 6 is two slots or more, and the connecting portions 7 at both ends of the insulating member 6 are alternately slotted with the connecting portions 7 of the adjacent insulating members 6. When the insulation member overlaps (when two or more insulation members are used), the connecting part overlaps and the insulation member maintains a sufficient area even when the insulation member is displaced due to external force during coil end molding. Therefore, it is possible to prevent leakage of the insulating member and prevent a layer short circuit.

Embodiment 3 FIG.
FIG. 18 shows the third embodiment, and is a plan view of an insulating member. As shown in the figure, the connecting portion 7 of the insulating member 6 is not connected to the insulating portion 8 at a right angle, but is formed in a square shape. This is in accordance with the molding shape of the coil end 5, and the connecting portion interval (W1) on the coil end 5 side with the larger dimension expanded in the outer peripheral direction of the stator is set to be smaller than the connecting portion interval (W2) on the opposite side. Take widely.

  As a guideline for the size of the insulating member 6, the width of the connecting portion 7 is about 1 mm smaller than the dimension of the widest portion in the circumferential direction of the slot 3, and the difference in the interval between the connecting portions 7 (W2-W1) is between the half slots. Good minutes. The length in the circumferential direction of the insulating portion 8 is preferably a dimension that is longer by one slot than the length of the outer periphery of the molded coil end 5 divided by the number of insulating members 6.

The material of the insulating member 6 is the same as that of the first and second embodiments, and is a thin insulating material such as PET (polyethylene terephthalate), PPS (polyphenylene sulfide), PEN (polyethylene naphthalate), aromatic aramid paper, etc. Although it is formed by punching the whole from the plate material, the insulating portion 8 and the connecting portion 7 may be separately formed and then bonded.
The insulating portion 8 and the connecting portion 7 may be inserted by bonding (welding) different materials.
Moreover, you may form the connection part 7 with a thread | yarn and other elongate linear connection members.
Further, in order to eliminate an insertion error of the insulating member 6, a small notch may be provided or displayed on the lead side or the non-lead side.
Further, the insulating member 6 may not be symmetrical.
Moreover, although the example shown here is a case where two insulating members are used, it may be one or may be a plurality of three or more.

  According to the third embodiment, the interval between the connecting portions 7 of the insulating member 6 is different between the lead side and the non-lead side, and the interval between the connecting portions 7 is increased on the side where the coil end molding amount is large. The member 6 fits to the coil 4, and the expansion, cutting and displacement of the insulating member 6 at the time of coil end molding can be suppressed, and a layer short circuit can be prevented.

Embodiment 4 FIG.
FIG. 19 shows the fourth embodiment, and is a plan view of an insulating member. As shown in the figure, the circumferential width of the connecting portions 7 of some of the insulating members 6 is narrower than the circumferential width of the other connecting portions 7. This is because when the connecting portion 7 enters the adjacent slot 3, if one of the connecting portions 7 forms a dimension about 1 mm smaller than the dimension of the widest portion in the circumferential direction of the slot 3, the insulating member 6 is This is because in order to maintain a stable posture along the stator 1, it is better to make it thinner and increase the volume of the coil 4 accordingly.

  Further, by narrowing the width of the connecting portion 7 of the insulating member 6 in the slot 3 into which the two coils are inserted, the connecting portion 7 is prevented from becoming difficult to enter the slot 3.

  As a guideline of dimensions, the width of the thick connecting portion 7 is preferably about 1 mm smaller than the width of the widest portion of the slot 3 in the circumferential direction, and the width of the thin connecting portion 7 is preferably the same as the width of the opening of the slot 3. .

The material of the insulating member 6 is an insulating thin plate material such as PET (polyethylene terephthalate), PPS (polyphenylene sulfide), PEN (polyethylene naphthalate), and aromatic aramid paper, as in the first to third embodiments. Although it is formed by punching the whole, the insulating portion 8 and the connecting portion 7 may be separately formed and then bonded.
The insulating portion 8 and the connecting portion 7 may be inserted by bonding (welding) different materials.
Moreover, you may form the connection part 7 with a thread | yarn and other elongate linear connection members.
Further, the insulating member 6 may not be symmetrical, and the widths of both insulating portions may be equal.
Moreover, although the example shown here is a case where two insulating members are used, it may be one or may be a plurality of three or more.

According to the fourth embodiment, when the connecting portion 7 of the insulating member 6 is inserted into the continuous slot 3, either one of them is narrowed or the width of the connecting portion 7 of the insulating member 6 is inserted into two coils. By thinning the slot, the connecting portion 7 can be easily inserted into the slot 3, the expansion and movement of the insulating member 6 during coil end molding can be suppressed, and a layer short-circuit can be prevented.
During coil end molding, the insulation member is prevented from being stretched or displaced due to external force, resulting in insufficient insulation, thus preventing a layer short circuit.

Embodiment 5 FIG.
FIG. 20 is a diagram showing a fifth embodiment, and shows a compressor using a stator using the insulating member described in any of the first to fourth embodiments and a refrigeration cycle apparatus including the compressor. It is a conceptual diagram. In FIG. 20, the compressor 9 is driven by electric power supplied from a single-phase or three-phase power source 11 by an electric motor 10.

  This compressor 9 includes a generally used refrigeration cycle (compressor 9 → four-way valve → condenser (heat source side heat exchanger or use side heat exchanger) → expansion device → evaporator (use side heat exchanger or heat source side heat). (Exchanger) → four-way valve → compressor 9 In order, the refrigerant is incorporated into a refrigeration cycle apparatus connected by refrigerant piping, and as the refrigerant, HFC-based refrigerants represented by R134a, R410a, R407c, etc. ), R717 (ammonia), R600a (isobutane), R290 (propane), etc., natural refrigerants such as weakly compatible oils typified by alkylbenzene oils or ester oils as refrigeration oils are compatible. Oil is used.

  As the compressor, a reciprocating type, a rotary type, a scroll type or the like can be used. Since the electric motor 10 incorporated in the compressor 9 is cut off from the outside air and filled with the refrigerant, it is necessary to have a refrigerant resistance specification. The refrigerant has a particularly low insulation resistance when the temperature is lowered and liquefies, lowers the insulation resistance between the coils, and a layer short circuit of the electric motor 10 is likely to occur. It is effective to use a compressor having a large layer short-circuit resistance using the described insulating member for the refrigeration cycle apparatus.

In the example shown in FIG. 20, the single-phase or three-phase power supply 11 is directly input to the compressor 9, but a drive method using an inverter may be used.
The motor 10 may be a brushless DC motor, an induction machine, or a synchronous motor. In a compressor in which a rotor magnet is magnetized by a stator, a large external force acts on the coil due to magnetization, so the layer short of the brushless DC motor. For prevention, the compressor 9 using the insulating member described in any of the first to fourth embodiments is further effective.

  In the compressor 9 configured as described above, a layer short-circuit can be prevented, and quality and safety are improved.

  Further, by using the compressor in the refrigeration cycle apparatus, a highly efficient refrigeration cycle with low cost can be realized.

It is a figure which shows Embodiment 1, and is a side view of a stator. It is a figure which shows Embodiment 1, and is a block diagram of the coil end winding | winding of the three-phase 4 pole stator which inserted the insulating member. FIG. 5 shows the first embodiment, and is an enlarged view of the insertion position of the first insulating member inserted between the outer phase coil and the middle phase coil at the coil end and the coil end winding. FIG. 5 shows the first embodiment, and is an enlarged view of the insertion position of the second insulating member inserted between the middle phase coil and the inner phase coil of the coil end and the coil end winding. FIG. 5 shows the first embodiment, and is a plan view of a first insulating member inserted between an outer phase coil and an intermediate phase coil. FIG. 5 shows the first embodiment, and is a plan view of a second insulating member inserted between the intermediate phase coil and the inner phase coil. FIG. 5 shows the first embodiment, and is a plan view of a first insulating member in which a notch is provided in a lead-side insulating portion. FIG. 5 shows the first embodiment, and is a plan view of a first insulating member in which a notch is provided in the non-lead-side insulating portion. FIG. 5 shows the first embodiment, and is a plan view of a first insulating member that displays a lead side on a lead side insulating portion. FIG. 5 is a diagram illustrating the first embodiment, and is a plan view of a first insulating member in which an anti-lead side insulating portion is displayed on an anti-lead side insulating portion. FIG. 5 shows the first embodiment and is a plan view of a second insulating member in which a notch is provided in the lead-side insulating portion. FIG. 5 shows the first embodiment and is a plan view of a second insulating member in which a notch is provided in the non-lead-side insulating portion. FIG. 5 is a diagram showing the first embodiment, and is a plan view of a second insulating member in which a lead side is displayed on a lead side insulating portion. FIG. 5 is a diagram showing the first embodiment, and is a plan view of a second insulating member in which an anti-lead side insulating portion is displayed on the anti-lead side insulating portion. It is a figure which shows Embodiment 2, and is a block diagram of the coil end coil | winding of the single phase 2 pole stator which inserted the insulating member. It is a figure which shows Embodiment 2, and is a top view of an insulating member. It is a figure which shows Embodiment 2 and is a top view which shows the other example of an insulating member. It is a figure which shows Embodiment 3, and is a top view of an insulating member. It is a figure which shows Embodiment 4, and is a top view of an insulating member. It is a figure which shows Embodiment 5, and is a conceptual diagram which shows the refrigerating cycle apparatus provided with the compressor using the stator using the insulating member described in any of Embodiment 1 thru | or 4, and the compressor. .

Explanation of symbols

  1 Stator, 2 Stator Core, 3 Slot, 4 Coil, 5 Coil End, 6 Insulating Member, 6a First Insulating Member, 6b Second Insulating Member, 7 Connecting Portion, 8 Insulating Portion, 8a Lead Side Insulating Portion , 8b Anti-lead side insulating part, 9 compressor, 10 electric motor, 11 power supply, 12 notch, 13 binding thread, 14 lead wire.

Claims (6)

In a stator of an electric motor that inserts a coil into a slot of a stator core and insulates different phases of coil ends formed at both axial ends of the stator core by an insulating member.
The insulating member includes an insulating portion that insulates the different phases of the coil ends, and a plurality of connecting portions that connect the insulating members;
With
Each of the different phases is insulated by at least one of the insulating members, and the insulating member that insulates the different phases includes at least one connecting portion between the different phases of the adjacent insulating members. A stator for an electric motor, wherein the stator is inserted so as to overlap with the connecting portion or the other connecting portion of the connecting portion. The circumferential spacing of the front Symbol connecting part, the stator of the motor according to claim 1, characterized in that to increase towards the extended distance is greater coil end side in the radial direction during molding of the coil end. In a stator of an electric motor that inserts a coil into a slot of a stator core and insulates between different phases of coil ends formed at both axial ends of the stator core by an insulating member,
The insulating member includes an insulating part that insulates different phases of the coil ends, and a plurality of connecting parts that connect the insulating parts,
The provided, the width of the connecting portion to be inserted into the slot two said coils are housed, a stator of the motor, characterized by less than the width of the other of said connecting portion.   A compressor equipped with an electric motor using the stator of the electric motor according to any one of claims 1 to 3.   The compressor according to claim 4, wherein the permanent magnet of the rotor is magnetized by the stator of the electric motor.   A refrigeration cycle apparatus using the compressor according to claim 4 or 5 in a refrigeration cycle.

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