JP6912252B2

JP6912252B2 - Stator and motor

Info

Publication number: JP6912252B2
Application number: JP2017072085A
Authority: JP
Inventors: 智昭平山
Original assignee: Aichi Electric Co Ltd
Current assignee: Aichi Electric Co Ltd
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2021-08-04
Anticipated expiration: 2037-03-31
Also published as: JP2018174665A

Description

本発明は、スロット内に挿入されている、異なる相の固定子巻線間を絶縁する技術に関する。 The present invention relates to a technique for insulating between stator windings of different phases inserted in a slot.

機器を駆動する電動機として、例えば、特許文献１（特開２００３−３２９８５号公報）に開示されている電動機が知られている。特許文献１に開示されている電動機は、固定子と、回転子を備え、固定子は、固定子コアと、固定子巻線と、相間絶縁部材を有している。固定子コアのスロット内には、径方向外周側と径方向内周側に異なる相の固定子巻線が挿入されている。そして、径方向外周側に挿入された固定子巻線（「外周側固定子巻線」という）と径方向内周側に挿入された固定子巻線（「内周側固定子巻線」という）との間に相間絶縁部材が配置されている。 As an electric motor for driving an apparatus, for example, an electric motor disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2003-32985) is known. The electric motor disclosed in Patent Document 1 includes a stator and a rotor, and the stator has a stator core, a stator winding, and an interphase insulating member. In the slot of the stator core, stator windings having different phases are inserted on the outer peripheral side in the radial direction and the inner peripheral side in the radial direction. Then, a stator winding inserted on the outer peripheral side in the radial direction (referred to as "outer peripheral side stator winding") and a stator winding inserted on the radial inner peripheral side (referred to as "inner peripheral side stator winding"). ), An interphase insulating member is arranged.

特開２００３−３２９８５号公報Japanese Unexamined Patent Publication No. 2003-32985

特許文献１に開示されている電動機では、軸方向および周方向に沿って延在する板状に形成された相間絶縁部材を用いている。このため、スロット内に外周側固定子巻線を挿入した後、外周側固定子巻線より径方向内周側に相間絶縁部材を配置した状態で、相間絶縁部材より径方向内周側に内周側固定子巻線を挿入する際に、相間絶縁部材の位置がずれ、外周側固定子巻線と内周側固定子巻線との間の絶縁不良が発生するおそれがある。
本発明は、このような点に鑑みて創案されたものであり、スロット内の径方向外周側および径方向内周側に挿入される、異なる相の固定子巻線間の絶縁不良を防止することができる固定子および電動機を提供することを目的とする。 The electric motor disclosed in Patent Document 1 uses an interphase insulating member formed in a plate shape extending along the axial direction and the circumferential direction. Therefore, after inserting the outer peripheral side stator winding into the slot, the interphase insulating member is arranged on the radial inner peripheral side of the outer peripheral side stator winding, and then inside the radial inner peripheral side of the interphase insulating member. When the circumferential stator winding is inserted, the position of the interphase insulating member may shift, and insulation failure between the outer peripheral side stator winding and the inner peripheral side stator winding may occur.
The present invention has been devised in view of these points, and prevents insulation failure between stator windings of different phases inserted on the radial outer peripheral side and the radial inner peripheral side in the slot. It is an object of the present invention to provide a stator and an electric motor that can be used.

第１発明は、固定子に関する。本発明の固定子は、周方向に隣接するティースによって形成されるスロット内に、径方向外周側と径方向内周側に異なる相の固定子巻線が挿入されているとともに、径方向外周側に挿入されている固定子巻線と径方向内周側に挿入されている固定子巻線との間に、周方向および軸方向に沿って延在する相間絶縁部材が配置されている。
ティースは、周方向一方側に第１のティース側面を有し、周方向他方側に第２のティース側面を有している。「周方向一方側」および「周方向他方側」は、周方向に沿った方向のうちの一方側および他方側を意味する。
好適には、固定子は、固定子コアを備え、固定子コアは、軸方向に直角な断面で見て、周方向に沿って延在するヨークと、ヨークから径方向に沿って径方向内周側に延在するティース基部およびティース基部の径方向内周側に設けられ、周方向に沿って延在するティース先端部により形成される複数のティースと、周方向に隣接するティースによって形成される複数のスロットを有している。この場合、ティース基部の周方向一方側の第１のティース基部側面および周方向他方側の第２のティース基部側面が、それぞれ本発明の「第１のティース側面」および「第２のティース側面」に対応する。
相間絶縁部材は、周方向一方側の第１の縁部を含む第１の縁部分と、周方向他方側の第２の縁部を含む第２の縁部分と、第１の縁部分と第２の縁部分との間に設けられ、第１の分割部分と第２の分割部分により形成されている中央部分とを有し、第１の縁部分と第１の分割部分との間に設けられている、軸方向に沿った第１の折り曲げ部の箇所、第１の分割部分と第２の分割部分との間に設けられている、軸方向に沿った第２の折り曲げ部の箇所および第２の分割部分と第２の縁部分との間に設けられている、軸方向に沿った第３の折り曲げ部の箇所で、軸方向に直角な断面がＷ字状を有するように交互に逆方向に折り曲げられている。「周方向一方側の第１の縁部」は、周方向一方側に配置される縁部を示し、「周方向他方側の第２の縁部」は、周方向他方側に配置される縁部を示す。
中央部分は、周方向に沿って伸縮可能に構成されている。「周方向に沿って伸縮可能」という記載は、好適には、径方向に沿った力、典型的には、径方向内周側から径方向外周側の方向への力が加わった時に、径方向に沿った長さが短くなるとともに、周方向に沿った長さが長くなるように弾性変形する構成（弾性伸縮性可能）を意味する。
そして、本発明では、第１の縁部分の、少なくとも第１の縁部を含む部分が、径方向外周側に挿入されている固定子巻線と、周方向に隣接するティースのうちの周方向一方側のティースの第２のティース側面との間に配置されるとともに、第２の縁部分の、少なくとも第２の縁部を含む部分が、径方向外周側に挿入されている固定子巻線と、周方向に隣接するティースのうちの周方向他方側のティースの第１のティース側面との間に配置される。
本発明では、スロット内の径方向外周側および径方向内周側に挿入されている、異なる相の固定子巻線間の絶縁不良を確実に防止することができる。
本発明の他の形態では、固定子巻線は、ティースに対して周方向両側に形成されたスロットに挿入可能な形状を有する固定子巻線束に形成されている。
本形態では、予め、ティースを挟んで周方向両側に形成されているスロット内に挿入される固定子巻線を巻き付けた固定子巻線束を用いるため、固定子巻線をスロット内に挿入する作業が用意となり、固定子巻線の占積率を高めることができる。
本発明の他の形態では、固定子巻線束は、ティースに対して周方向両側に形成されたスロットの径方向外周側に挿入可能な形状を有する固定子巻線束、ティースに対して周方向両側に形成されたスロットの径方向内周側に挿入可能な形状を有する固定子巻線束、ティースに対して周方向両側に形成されたスロットのうちの一方のスロットの径方向外周側と他方のスロットの径方向内周側に挿入可能な形状を有する固定子巻線束を含んでいる。
本形態では、奇数のスロット数を有する固定子を構成することができる。
第２発明は、電動機に関する。本発明の電動機は、固定子と、回転子とを備え、固定子として前述したいずれかの固定子が用いられている。 The first invention relates to a stator. In the stator of the present invention, stator windings having different phases are inserted on the radial outer peripheral side and the radial inner peripheral side in a slot formed by teeth adjacent in the circumferential direction, and the radial outer peripheral side. An interphase insulating member extending along the circumferential direction and the axial direction is arranged between the stator winding inserted in and the stator winding inserted on the inner peripheral side in the radial direction.
The teeth have a first tooth side surface on one side in the circumferential direction and a second tooth side surface on the other side in the circumferential direction. "One side in the circumferential direction" and "the other side in the circumferential direction" mean one side and the other side of the directions along the circumferential direction.
Preferably, the stator comprises a stator core, the stator core having a yoke extending along the circumferential direction and within the radial direction from the yoke when viewed in a cross section perpendicular to the axial direction. A tooth base extending on the circumferential side and a plurality of teeth provided on the radial inner peripheral side of the tooth base and extending along the circumferential direction are formed by a plurality of teeth and teeth adjacent to each other in the circumferential direction. Has multiple slots. In this case, the first tooth base side surface on one side in the circumferential direction and the second tooth base side surface on the other side in the circumferential direction of the tooth base are the "first tooth side surface" and the "second tooth side surface" of the present invention, respectively. Corresponds to.
The interphase insulating member includes a first edge portion including a first edge portion on one side in the circumferential direction, a second edge portion including a second edge portion on the other side in the circumferential direction, and a first edge portion and a first edge portion. It is provided between the two edge portions, has a first divided portion and a central portion formed by the second divided portion, and is provided between the first edge portion and the first divided portion. A portion of the first bent portion along the axial direction, a portion of the second bent portion along the axial direction provided between the first divided portion and the second divided portion, and a portion of the second bent portion along the axial direction. At the portion of the third bent portion along the axial direction provided between the second divided portion and the second edge portion, the cross section perpendicular to the axial direction alternately has a W shape. It is bent in the opposite direction. The "first edge on one side in the circumferential direction" indicates the edge arranged on one side in the circumferential direction, and the "second edge on the other side in the circumferential direction" is the edge arranged on the other side in the circumferential direction. Shows the part .
The central portion is configured to be stretchable along the circumferential direction. The description "expandable along the circumferential direction" preferably refers to the diameter when a force along the radial direction, typically a force from the inner circumferential side in the radial direction to the outer peripheral side in the radial direction is applied. It means a configuration (elastic elasticity is possible) that elastically deforms so that the length along the direction becomes shorter and the length along the circumferential direction becomes longer.
Then, in the present invention, the portion of the first edge portion including at least the first edge portion is the stator winding inserted on the outer peripheral side in the radial direction and the circumferential direction of the teeth adjacent to the circumferential direction. A stator winding that is arranged between the one side of the tooth and the side surface of the second tooth, and the portion of the second edge portion including at least the second edge portion is inserted on the outer peripheral side in the radial direction. And the first tooth side surface of the tooth on the other side in the circumferential direction among the teeth adjacent in the circumferential direction.
In the present invention, it is possible to reliably prevent insulation failure between stator windings of different phases inserted on the radial outer peripheral side and the radial inner peripheral side in the slot.
In another embodiment of the present invention, the stator windings are formed in a stator winding bundle having a shape that can be inserted into slots formed on both sides in the circumferential direction with respect to the teeth.
In this embodiment, since a stator winding bundle in which the stator windings are wound in the slots formed on both sides in the circumferential direction with the teeth sandwiched in advance is used, the work of inserting the stator windings into the slots. Is ready, and the space factor of the stator winding can be increased.
In another embodiment of the present invention , the stator winding bundle is a stator winding bundle having a shape that can be inserted into the radial outer peripheral side of a slot formed on both sides in the circumferential direction with respect to the teeth, and both sides in the circumferential direction with respect to the teeth. A stator winding bundle having a shape that can be inserted into the radial inner peripheral side of the slot formed in, one of the slots formed on both sides in the circumferential direction with respect to the teeth, the radial outer peripheral side and the other slot. Includes a stator winding bundle having a shape that can be inserted into the radial inner peripheral side of the.
In this embodiment, a stator having an odd number of slots can be configured.
The second invention relates to an electric motor. The motor of the present invention includes a stator and a rotor, and any of the above-mentioned stators is used as the stator.

本発明の固定子および電動機では、スロット内の径方向外周側および径方向内周側に挿入される、異なる相の固定子巻線間の絶縁不良を防止することができる。 In the stator and motor of the present invention, it is possible to prevent insulation failure between stator windings of different phases inserted on the radial outer peripheral side and the radial inner peripheral side in the slot.

本発明の電動機の一実施形態を示す図である。It is a figure which shows one Embodiment of the electric motor of this invention. 本発明の固定子の一実施形態を示す図である。It is a figure which shows one Embodiment of the stator of this invention. 相間絶縁部材の第１の実施形態を示す図である。It is a figure which shows the 1st Embodiment of the interphase insulation member. 固定子巻線束に相間絶縁部材を装着する動作を説明する図である。It is a figure explaining the operation which attaches the interphase insulation member to the stator winding bundle. 相間絶縁部材が装着された固定子巻線束をスロットの径方向外周側に挿入した状態を示す図である。It is a figure which shows the state which inserted the stator winding bundle which attached the interphase insulating member into the radial outer peripheral side of a slot. スロットの径方向外周側および径方向内周側に、相間絶縁部材を挟んで固定子巻線束を挿入した状態を示す図である。It is a figure which shows the state which inserted the stator winding bundle with the interphase insulating member sandwiched between the radial outer peripheral side and the radial inner peripheral side of a slot. 相間絶縁部材の第２の実施形態を示す図である。It is a figure which shows the 2nd Embodiment of the interphase insulation member. 相間絶縁部材の第３の実施形態を示す図である。It is a figure which shows the 3rd Embodiment of the interphase insulation member.

以下に、本発明の実施形態を、図面を参照して説明する。
本明細書では、「軸方向」という記載は、回転子が固定子に対して相対的に回転可能に配置されている状態において、回転子の回転中心Ｏ（図１参照）を通る回転中心線の方向を示す。「周方向」という記載は、回転子が固定子に対して相対的に回転可能に配置されている状態において、軸方向に直角な断面（図１参照）で見て、回転中心Ｏを中心とする円周方向を示す。「径方向」という記載は、回転子が固定子に対して相対的に回転可能に配置されている状態において、軸方向に直角な断面で見て、回転中心Ｏを通る方向を示す。「径方向内周側」という記載は、径方向に沿って回転中心Ｏ側を示し、「径方向外周側」という記載は、径方向に沿って回転中心Ｏと反対側を示す。
なお、相間絶縁部材に対しては、「軸方向」、「周方向」および「径方向」という記載は、相間絶縁部材が固定子コアのスロット内に配置されている状態における「軸方向」、「周方向」および「径方向」を示す。
また、以下では、軸方向に直角な断面（図１）において、時計方向を「周方向一方側」と呼び、反時計方向を「周方向他方側」と呼んでいるが、「周方向一方側」および「周方向他方側」は、逆方向であってもよい。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the present specification, the description "axial direction" refers to a rotation center line passing through the rotation center O (see FIG. 1) of the rotor in a state where the rotor is arranged so as to be rotatable relative to the stator. Indicates the direction of. The description "circumferential direction" refers to the center of rotation O as a center when viewed in a cross section perpendicular to the axial direction (see FIG. 1) in a state where the rotor is arranged so as to be rotatable relative to the stator. Indicates the circumferential direction. The description "radial direction" indicates a direction passing through the center of rotation O when viewed in a cross section perpendicular to the axial direction in a state where the rotor is arranged so as to be rotatable relative to the stator. The description "diameter inner circumference side" indicates the rotation center O side along the radial direction, and the description "diameter outer circumference side" indicates the side opposite to the rotation center O along the radial direction.
For the interphase insulating member, the descriptions "axial direction", "circumferential direction" and "diameter direction" refer to "axial direction" in the state where the interphase insulating member is arranged in the slot of the stator core. Indicates "circumferential direction" and "diameter direction".
Further, in the following, in the cross section perpendicular to the axial direction (FIG. 1), the clockwise direction is referred to as "one side in the circumferential direction" and the counterclockwise direction is referred to as "the other side in the circumferential direction". "And" the other side in the circumferential direction "may be in the opposite direction.

本発明の電動機の一実施形態を、図１、図２を参照して説明する。なお、図１は、一実施形態の電動機１０を、軸方向に直角な断面で見た図である。また、図２は、固定子コアに固定子巻線および相間絶縁部材を挿入した状態を示す図である。
本実施形態の電動機１０は、固定子２０と、固定子２０に対して相対的に回転可能に支持されている回転子７０により構成されている。 An embodiment of the electric motor of the present invention will be described with reference to FIGS. 1 and 2. Note that FIG. 1 is a view of the electric motor 10 of one embodiment as viewed in a cross section perpendicular to the axial direction. Further, FIG. 2 is a diagram showing a state in which the stator winding and the interphase insulating member are inserted into the stator core.
The motor 10 of the present embodiment includes a stator 20 and a rotor 70 that is rotatably supported relative to the stator 20.

固定子２０は、固定子コア３０、スロット絶縁部材４０、固定子巻線、相間絶縁部材１００、ウェッジ６０を有している。相間絶縁部材１００は、本実施形態の固定子２０で用いられる相間絶縁部材の第１の実施形態である。
固定子コア３０は、積層された複数の電磁鋼板により構成されている。
固定子コア３０は、ヨーク３１、複数のティース３２、複数のスロット３５を有している。軸方向に直角な断面で見て、ヨーク３１は、周方向に沿って延在している。ティース３２は、ヨーク３１から径方向に沿って径方向内周側（回転中心側）に延在するティース基部３３と、ティース基部３３の径方向内周側に設けられ、周方向に沿って延在するティース先端部３４により形成されている。
図５に示されているように、ティース基部３３は、周方向一方側に形成された第１のティース基部側面（周方向一方側のティース基部側面）３３ａ、周方向他方側に形成された第２のティース基部側面（周方向他方側のティース基部側面）３３ｂを有している。
また、ティース先端部３４は、径方向内周側に形成されたティース先端部内周面３４ａ、周方向一方側に形成された第１のティース先端部側面（周方向一方側のティース先端部側面）３４ｂ、周方向他方側に形成された第２のティース先端部側面（周方向他方側のティース先端部側面）３４ｃ、径方向外周側で、周方向一方側に形成された（第１のティース先端部側面３４ｂと第１のティース基部側面３３ａとの間に形成された）第１のティース先端部外周面（周方向一方側のティース先端部外周面）３４ｄ、径方向外周側で、周方向他方側に形成された（第２のティース先端部側面３４ｃと第２のティース基部側面３３ｂとの間に形成された）第２のティース先端部外周面（周方向他方側のティース先端部外周面）３４ｅを有している。
周方向に隣接するティース３２によって、スロット３５が形成される。スロット３５は、隣接するティース先端部３４間に、スロット開口部を有している。スロット３５内には、スロット絶縁部材４０、固定子巻線、相間絶縁部材１００、ウェッジ６０が挿入される。
ティース先端部３４のティース先端部内周面３４ａによって、回転子７０が挿入される回転子挿入空間が形成される。 The stator 20 has a stator core 30, a slot insulating member 40, a stator winding, an interphase insulating member 100, and a wedge 60. The interphase insulating member 100 is the first embodiment of the interphase insulating member used in the stator 20 of the present embodiment.
The stator core 30 is composed of a plurality of laminated electromagnetic steel sheets.
The stator core 30 has a yoke 31, a plurality of teeth 32, and a plurality of slots 35. The yoke 31 extends along the circumferential direction when viewed in a cross section perpendicular to the axial direction. The teeth 32 are provided on the radial inner peripheral side (rotation center side) extending from the yoke 31 in the radial direction, and on the radial inner peripheral side of the tooth base 33, and extend along the circumferential direction. It is formed by the existing teeth tip 34.
As shown in FIG. 5, the teeth base 33 is formed on one side in the circumferential direction of the first tooth base (side surface of the base of the teeth on one side in the circumferential direction) 33a, and on the other side in the circumferential direction. It has 2 tooth base side surfaces (teeth base side surface on the other side in the circumferential direction) 33b.
Further, the tooth tip 34 is a tooth tip inner peripheral surface 34a formed on the inner peripheral side in the radial direction, and a first tooth tip side surface formed on one side in the circumferential direction (teeth tip side surface on one side in the circumferential direction). 34b, the side surface of the tip of the second tooth formed on the other side in the circumferential direction (the side surface of the tip of the tooth on the other side in the circumferential direction) 34c, the outer peripheral side in the radial direction, formed on one side in the circumferential direction (the tip of the first tooth). The outer peripheral surface of the tip of the first tooth (formed between the side surface 34b of the portion and the side surface 33a of the base of the first tooth) 34d, the outer peripheral surface of the tip of the tooth on one side in the circumferential direction, the outer peripheral surface in the radial direction, and the other in the circumferential direction. The outer peripheral surface of the second tooth tip (formed between the second tooth tip side surface 34c and the second tooth base side surface 33b) formed on the side (the outer peripheral surface of the tooth tip on the other side in the circumferential direction). It has 34e.
Slots 35 are formed by the teeth 32 adjacent to each other in the circumferential direction. The slot 35 has a slot opening between the adjacent tooth tips 34. A slot insulating member 40, a stator winding, an interphase insulating member 100, and a wedge 60 are inserted into the slot 35.
A rotor insertion space into which the rotor 70 is inserted is formed by the inner peripheral surface 34a of the tooth tip portion 34 of the tooth tip portion 34.

回転子７０は、回転子コア８０と、回転軸９０を有している。
回転子コア８０は、積層された複数の電磁鋼板により構成されている。回転軸９０は、回転子コア８０に固定される。
なお、回転子７０は、電動機の種類に応じて構成を有する。例えば、電動機１０が永久磁石電動機として構成される場合には、回転子コア８０に、軸方向に沿って延在する複数の磁石挿入孔が形成され、各磁石挿入孔に永久磁石が挿入される。 The rotor 70 has a rotor core 80 and a rotation shaft 90.
The rotor core 80 is composed of a plurality of laminated electromagnetic steel sheets. The rotating shaft 90 is fixed to the rotor core 80.
The rotor 70 has a configuration according to the type of the electric motor. For example, when the electric motor 10 is configured as a permanent magnet electric motor, a plurality of magnet insertion holes extending along the axial direction are formed in the rotor core 80, and a permanent magnet is inserted into each magnet insertion hole. ..

次に、固定子巻線をスロット３５内に挿入する（ティース３２に巻き付ける）方法を説明する。本実施形態では、固定子巻線をスロット３５内に挿入する（ティース３２に巻き付ける方法）方法として集中巻き方式を用いている。また、集中巻き方式としては、ニードルを用いてティース３２に直接巻き付ける方式と、予め固定子巻線を巻き付けた固定子巻線束を用意し、固定子巻線束をスロット３５内に挿入する方式（「インサータ方式」と呼ばれている）がある。本実施形態では、インサータ方式を用いている。 Next, a method of inserting the stator winding into the slot 35 (winding the stator winding around the teeth 32) will be described. In the present embodiment, the centralized winding method is used as a method of inserting the stator winding into the slot 35 (a method of winding around the teeth 32). Further, as the centralized winding method, a method of directly winding the stator 32 with a needle and a method of preparing a stator winding bundle in which the stator winding is wound in advance and inserting the stator winding bundle into the slot 35 (““ There is an inserter method). In this embodiment, the inserter method is used.

インサータ方式を用いて固定子巻線をスロット３５内に挿入する方法を、図２を参照して説明する。
図２では、固定子巻線は、３つの部分固定子巻線により形成されている３相の固定子巻線を有している。すなわち、Ｕ相の固定子巻線は、第１、第２および第３のＵ相部分固定子巻線５１（Ｕ１）、５１（Ｕ２）および５１（Ｕ３）により形成され、Ｖ相の固定子巻線は、第１、第２および第３のＶ相部分固定子巻線５２（Ｖ１）、５２（Ｖ２）および５２（Ｖ３）により形成され、Ｗ相の固定子巻線は、第１、第２および第３のＷ相部分固定子巻線５３（Ｗ１）、５３（Ｗ２）および５３（Ｗ３）により形成されている。
また、本実施形態では、各部分巻線は、ティース３２に対して周方向両側に形成されているスロット３５内に挿入可能に予め巻き付けられた固定子巻線束として形成されている。例えば、第１のＵ相部分固定子巻線５１（Ｕ１）は、ティース３２（１）に対して周方向一方側に形成されているスロット３５（１）の径方向外周側および周方向他方側に形成されているスロット３５（９）の径方向外周側に挿入可能な形状を有する第１のＵ相部分固定子巻線束５１（Ｕ１）として形成されている。また、第１のＷ相部分固定子巻線５３（Ｗ１）は、ティース３２（２）に対して周方向一方側に形成されているスロット３５（２）の径方向内周側および周方向他方側に形成されているスロット３５（１）の径方向内周側に挿入可能な形状を有する第１のＷ相部分固定子巻線束５３（Ｗ１）として形成されている。また、第１のＶ相部分固定子巻線５２（Ｖ１）は、ティース３２（３）に対して周方向一方側に形成されているスロット３５（３）の径方向内周側および周方向他方側に形成されているスロット３５（２）の径方向外周側に挿入可能な形状を有する第１のＶ相部分固定子巻線束５２（Ｖ１）として形成されている。 A method of inserting the stator winding into the slot 35 by using the inserter method will be described with reference to FIG.
In FIG. 2, the stator winding has a three-phase stator winding formed by three partial stator windings. That is, the U-phase stator winding is formed by the first, second and third U-phase partial stator windings 51 (U1), 51 (U2) and 51 (U3), and is a V-phase stator. The windings are formed by the first, second and third V-phase partial stator windings 52 (V1), 52 (V2) and 52 (V3), and the W-phase stator windings are the first, first, second and third V-phase stator windings. It is formed by second and third W-phase partial stator windings 53 (W1), 53 (W2) and 53 (W3).
Further, in the present embodiment, each partial winding is formed as a stator winding bundle pre-wound so as to be insertable into slots 35 formed on both sides in the circumferential direction with respect to the teeth 32. For example, the first U-phase partial stator winding 51 (U1) is formed on one side in the circumferential direction with respect to the teeth 32 (1) on the outer peripheral side in the radial direction and the other side in the circumferential direction. It is formed as a first U-phase partial stator winding bundle 51 (U1) having a shape that can be inserted into the radial outer peripheral side of the slot 35 (9) formed in. Further, the first W-phase partial stator winding 53 (W1) is formed on one side in the circumferential direction with respect to the teeth 32 (2) on the inner peripheral side in the radial direction and the other on the circumferential direction of the slot 35 (2). It is formed as a first W-phase partial stator winding bundle 53 (W1) having a shape that can be inserted into the radial inner peripheral side of the slot 35 (1) formed on the side. Further, the first V-phase partial stator winding 52 (V1) has a radial inner peripheral side and a circumferential other side of the slot 35 (3) formed on one side in the circumferential direction with respect to the teeth 32 (3). It is formed as a first V-phase partial stator winding bundle 52 (V1) having a shape that can be inserted into the radial outer peripheral side of the slot 35 (2) formed on the side.

各部分固定子巻線（部分固定子巻線束）を各スロット内に挿入する場合には、先ず、ティースに対して周方向両側に形成されているスロットの径方向外周側に挿入される部分固定子巻線を挿入する。図２では、第１のＵ相部分固定子巻線（第１のＵ相部分固定子巻線束）５１（Ｕ１）をスロット３５（１）および３５（９）の径方向外周側に挿入し、第２のＵ相部分固定子巻線（第２のＵ相部分固定子巻線束）５１（Ｕ２）をスロット３５（４）および３５（３）の径方向外周側に挿入し、第３のＵ相部分固定子巻線（第３のＵ相部分固定子巻線束）５１（Ｕ３）をスロット３５（７）および３５（６）の径方向外周側に挿入する。
次に、ティースに対して周方向両側に形成されているスロットのうちの一方のスロットの径方向内周側と他方のスロットの径方向外周側に挿入される部分固定子巻線を挿入する。図２では、第１のＶ相部分固定子巻線（第１のＶ相部分固定子巻線束）５２（Ｖ１）をスロット３５（３）の径方向内周側およびスロット３５（２）の径方向外周側に挿入し、第２のＶ相部分固定子巻線（第２のＶ相部分固定子巻線束）５２（Ｖ２）をスロット３５（６）の径方向内周側およびスロット３５（５）の径方向外周側に挿入し、第３のＶ相部分固定子巻線（第３のＶ相部分固定子巻線束）５２（Ｖ３）をスロット３５（９）の径方向内周側およびスロット３５（８）の径方向外周側に挿入する。
次に、ティースに対して周方向両側に形成されているスロットの径方向内周側に挿入される部分固定子巻線を挿入する。図２では、第１のＷ相部分固定子巻線（第１のＷ相部分固定子巻線束）５３（Ｗ１）をスロット３５（２）および３５（１）の径方向内周側に挿入し、第２のＷ相部分固定子巻線（第２のＷ相部分固定子巻線束）５３（Ｗ２）をスロット３５（５）および３５（４）の径方向内周側に挿入し、第３のＷ相部分固定子巻線（第３のＷ相部分固定子巻線束）５３（Ｗ３）をスロット３５（８）および３５（７）の径方向内周側に挿入する。 When inserting each partial stator winding (partial stator winding bundle) into each slot, first, the partial fixing is inserted on the radial outer peripheral side of the slot formed on both sides in the circumferential direction with respect to the teeth. Insert the child winding. In FIG. 2, the first U-phase partial stator winding (first U-phase partial stator winding bundle) 51 (U1) is inserted into the radial outer peripheral side of the slots 35 (1) and 35 (9). The second U-phase partial stator winding (second U-phase partial stator winding bundle) 51 (U2) is inserted into the radial outer peripheral side of the slots 35 (4) and 35 (3), and the third U The phase partial stator winding (third U-phase partial stator winding bundle) 51 (U3) is inserted into the radial outer peripheral side of the slots 35 (7) and 35 (6).
Next, the partial stator windings to be inserted into the radial inner peripheral side of one of the slots formed on both sides in the circumferential direction with respect to the teeth and the radial outer peripheral side of the other slot are inserted. In FIG. 2, the first V-phase partial stator winding (first V-phase partial stator winding bundle) 52 (V1) is arranged on the radial inner peripheral side of slot 35 (3) and the diameter of slot 35 (2). Insert the second V-phase partial stator winding (second V-phase partial stator winding bundle) 52 (V2) on the radial inner peripheral side of slot 35 (6) and slot 35 (5) by inserting it on the outer peripheral side in the direction. ) Is inserted on the radial outer peripheral side, and the third V-phase partial stator winding (third V-phase partial stator winding bundle) 52 (V3) is inserted into the radial inner peripheral side of slot 35 (9) and the slot. It is inserted on the outer peripheral side in the radial direction of 35 (8).
Next, the partial stator windings to be inserted on the radial inner peripheral side of the slots formed on both sides in the circumferential direction with respect to the teeth are inserted. In FIG. 2, the first W-phase partial stator winding (first W-phase partial stator winding bundle) 53 (W1) is inserted into the radial inner peripheral side of the slots 35 (2) and 35 (1). , The second W-phase partial stator winding (second W-phase partial stator winding bundle) 53 (W2) is inserted into the radial inner peripheral side of the slots 35 (5) and 35 (4), and the third 53 (W3) of the W-phase partial stator winding (third W-phase partial stator winding bundle) 53 (W3) is inserted into the radial inner peripheral side of the slots 35 (8) and 35 (7).

スロット３５内の径方向外周側に挿入される固定子巻線（以下、「外周側固定子巻線」という）と径方向内周側に挿入される固定子巻線（以下、「内周側固定子巻線」という）との間には、外周側固定子巻線と内周側固定子巻線とを絶縁するための相間絶縁部材１００が配置される。相間絶縁部材１００は、外周側固定子巻線と内周側固定子巻線との間に、軸方向および周方向に沿って延在するように配置される。
本実施形態の固定子２０で用いられる相間絶縁部材は、周方向一方側の第１の縁部を含む第１の縁部分、周方向他方側の第２の縁部を含む第２の縁部分、第１の縁部分と第２の縁部分との間に設けられ、周方向に沿って伸縮可能（弾性伸縮可能）な中央部分を有し、第１の縁部分と中央部分との間および第２の縁部分と中央部分との間に設けられている、軸方向に沿って延在する折り曲げ部の箇所で折り曲げられている。
「周方向一方側の第１の縁部」は、周方向一方側に配置される縁部を示し、「周方向他方側の第２の縁部」は、周方向他方側に配置される縁部を示す。 A stator winding inserted on the radial outer peripheral side in the slot 35 (hereinafter, referred to as "outer peripheral side stator winding") and a stator winding inserted on the radial inner peripheral side (hereinafter, "inner peripheral side"). An interphase insulating member 100 for insulating the outer peripheral side stator winding and the inner peripheral side stator winding is arranged between the stator winding and the stator winding. The interphase insulating member 100 is arranged between the outer peripheral side stator winding and the inner peripheral side stator winding so as to extend along the axial direction and the circumferential direction.
The interphase insulating member used in the stator 20 of the present embodiment has a first edge portion including a first edge portion on one side in the circumferential direction and a second edge portion including a second edge portion on the other side in the circumferential direction. , Provided between the first edge portion and the second edge portion, has a central portion that can be expanded and contracted (elastically stretchable) along the circumferential direction, and between the first edge portion and the central portion and It is bent at a bent portion extending along the axial direction provided between the second edge portion and the central portion.
The "first edge on one side in the circumferential direction" indicates the edge arranged on one side in the circumferential direction, and the "second edge on the other side in the circumferential direction" is the edge arranged on the other side in the circumferential direction. Shows the part.

相間絶縁部材１００の構成を、図３を参照して説明する。
相間絶縁部材１００は、第１の縁部１００ａ、第２の縁部１００ｂ、第３の縁部１００ｃ、第４の縁部１００ｄを有する四角形の絶縁フィルムを折り曲げて形成されている。すなわち、相間絶縁部材１００は、周方向一方側の第１の縁部１００ａを含む第１の縁部分１０１、周方向他方側の第２の縁部１００ｂを含む第２の縁部分１０４、第１の縁部分１０１と第２の縁部分１０４の間に設けられている第１の分割部分１０２および第２の分割部分１０３、第１の縁部分１０１と第１の分割部分１０２との間の第１の折り曲げ部１００Ａ、第１の分割部分１０２と第２の分割部分１０３との間の第２の折り曲げ部１００Ｂ、第２の分割部分１０３と第２の縁部分１０４との間の第３の折り曲げ部１００Ｃの箇所で、軸方向に直角な断面がＷ字状を有するように（軸方向両側の第３の縁部１００ｃおよび第４の縁部１００ｄがＷ字状となるように）折り曲げられている。本実施形態では、中央部分は、第１の分割部分１０２と第２の分割部分１０３の２つの分割部分により形成されている。なお、第１〜第３の折り曲げ部１００Ａ〜１００Ｃは、軸方向に沿って延在している。
本実施形態の相間絶縁部材１００は、第１の縁部１００ａと第２の縁部１００ｂが周方向一方側と周方向他方側に配置され、第３の縁部１００ｃと第４の縁部１００ｄが軸方向一方側と軸方向他方側に配置され、軸方向に直角な断面がＷ字状を有しているため、径方向に沿った力が加わると、径方向に沿った長さが短くなるとともに、周方向に沿った長さが長くなるように弾性変形する。 The configuration of the interphase insulating member 100 will be described with reference to FIG.
The interphase insulating member 100 is formed by bending a quadrangular insulating film having a first edge portion 100a, a second edge portion 100b, a third edge portion 100c, and a fourth edge portion 100d. That is, the interphase insulating member 100 includes a first edge portion 101 including a first edge portion 100a on one side in the circumferential direction, a second edge portion 104 including a second edge portion 100b on the other side in the circumferential direction, and a first. The first divided portion 102 and the second divided portion 103 provided between the edge portion 101 and the second edge portion 104, and the first between the first edge portion 101 and the first divided portion 102. 1 bent portion 100A, second bent portion 100B between the first divided portion 102 and the second divided portion 103, and a third between the second divided portion 103 and the second edge portion 104. At the bent portion 100C, the cross section perpendicular to the axial direction is bent so as to have a W shape (so that the third edge portion 100c and the fourth edge portion 100d on both sides in the axial direction are W-shaped). ing. In the present embodiment, the central portion is formed by two divided portions, a first divided portion 102 and a second divided portion 103. The first to third bent portions 100A to 100C extend along the axial direction.
In the interphase insulating member 100 of the present embodiment, the first edge portion 100a and the second edge portion 100b are arranged on one side in the circumferential direction and the other side in the circumferential direction, and the third edge portion 100c and the fourth edge portion 100d are arranged. Are arranged on one side in the axial direction and the other side in the axial direction, and the cross section perpendicular to the axial direction has a W shape. Therefore, when a force along the radial direction is applied, the length along the radial direction becomes short. At the same time, it is elastically deformed so that the length along the circumferential direction becomes long.

次に、外周側固定子巻線と内周側固定子巻線との間に相間絶縁部材１００を配置する動作を、図４〜図６を参照して説明する。図４〜図６には、スロット３５（１）内の径方向外周側に第１のＵ相部分固定子巻線束５１（Ｕ１）を挿入し、径方向内周側に第１のＷ相部分固定子巻線束５３（Ｗ１）を挿入する動作が示されている。
先ず、第１のＵ相固定子巻線束５１（Ｕ１）を、スロット３５（１）の径方向外周側に挿入する。その際、第１のＵ相固定子巻線束５１（Ｕ１）の径方向内周側に相間絶縁部材１００を同時に挿入する。図４に示されているように、第１のＵ相部分固定子巻線束５１（Ｕ１）の、スロット３５（１）の径方向外周側に挿入される部分（以下、単に「第１のＵ相部分固定子巻線束５１（Ｕ１）」という）は、径方向内周側に内周部５１ａを有し、周方向一方側に第１の側部５１ｂを有し、周方向他方側に第２の側部５１ｃを有している。なお、図４では、内周部５１ａ、第１の側部５１ｂ、第２の側部５１ｃが直線で示されているが、実際には、各固定子巻線の外周面により形成されているため、凹凸を有している。そして、太線矢印で示すように、径方向内周側から径方向外周側方向への力が相間絶縁部材１００に加わることで、相間絶縁部材１００は、第１のＵ相部分固定子巻線束５１（Ｕ１）の径方向内周側に装着される。この時、相間絶縁部材１００は、矢印Ｂで示す径方向に沿った長さが短くなるとともに、矢印Ａで示す周方向に沿った長さが長くなるように弾性変形する。これにより、図５に示されているように、相間絶縁部材１００の、周方向一方側の第１の縁部分１０１の、少なくとも第１の縁部１００ａを含む部分は、第１のＵ相部分固定子巻線束５１（Ｕ１）と、スロット３５（１）を形成するティースのうちの周方向一方側のティース３２（２）の第２のティース基部側面３３ｂ（２）（第２のティース側面）との間に挿入（配置）される。また、相間絶縁部材１００の、周方向他方側の第２の縁部分１０４の、少なくとも第２の縁部１００ｂを含む部分は、第１のＵ相部分固定子巻線束５１（Ｕ１）と、スロット３５（１）を形成するティースのうちの周方向他方側のティース３２（１）の第１のティース基部側面３３ａ（１）（第１のティース側面）との間に挿入（配置）される。
言い換えれば、相間絶縁部材１００の第１の縁部分１０１は、スロット３５（１）を形成するティースのうちの周方向一方側のティース３２（２）の第２のティース基部側面３３ｂ（２）（第２のティース側面）の延在方向に沿って延在するとともに、第２の縁部分１０４は、周方向他方側のティース３２（１）の第１のティース基部側面３３ａ（１）（第１のティース側面）の延在方向に沿って延在する。 Next, the operation of arranging the interphase insulating member 100 between the outer peripheral side stator winding and the inner peripheral side stator winding will be described with reference to FIGS. 4 to 6. In FIGS. 4 to 6, the first U-phase partial stator winding bundle 51 (U1) is inserted on the radial outer peripheral side in the slot 35 (1), and the first W-phase portion is on the radial inner peripheral side. The operation of inserting the stator winding bundle 53 (W1) is shown.
First, the first U-phase stator winding bundle 51 (U1) is inserted into the outer peripheral side of the slot 35 (1) in the radial direction. At that time, the interphase insulating member 100 is simultaneously inserted into the radial inner peripheral side of the first U-phase stator winding bundle 51 (U1). As shown in FIG. 4, a portion of the first U-phase partial stator winding bundle 51 (U1) inserted on the radial outer peripheral side of the slot 35 (1) (hereinafter, simply "the first U". The phase portion stator winding bundle 51 (U1) ”) has an inner peripheral portion 51a on the inner peripheral side in the radial direction, a first side portion 51b on one side in the circumferential direction, and a first side portion 51b on the other side in the circumferential direction. It has a side portion 51c of 2. Although the inner peripheral portion 51a, the first side portion 51b, and the second side portion 51c are shown as straight lines in FIG. 4, they are actually formed by the outer peripheral surfaces of the stator windings. Therefore, it has irregularities. Then, as shown by the thick line arrow, a force from the inner peripheral side in the radial direction to the outer peripheral side in the radial direction is applied to the interphase insulating member 100, so that the interphase insulating member 100 is subjected to the first U-phase partial stator winding bundle 51. It is mounted on the inner peripheral side in the radial direction of (U1). At this time, the interphase insulating member 100 is elastically deformed so that the length along the radial direction indicated by the arrow B becomes shorter and the length along the circumferential direction indicated by the arrow A becomes longer. As a result, as shown in FIG. 5, the portion of the interphase insulating member 100 including at least the first edge portion 100a of the first edge portion 101 on one side in the circumferential direction is the first U-phase portion. Second tooth base side surface 33b (2) (second tooth side surface) of the teeth 32 (2) on one side in the circumferential direction of the teeth forming the stator winding bundle 51 (U1) and the slot 35 (1). It is inserted (placed) between and. Further, the portion of the interphase insulating member 100 including at least the second edge portion 100b of the second edge portion 104 on the other side in the circumferential direction is a slot with the first U-phase partial stator winding bundle 51 (U1). It is inserted (arranged) between the teeth 32 (1) on the other side in the circumferential direction of the teeth forming 35 (1) from the first tooth base side surface 33a (1) (first tooth side surface).
In other words, the first edge portion 101 of the interphase insulating member 100 is the second tooth base side surface 33b (2) (2) of the teeth 32 (2) on one side in the circumferential direction of the teeth forming the slot 35 (1). The second edge portion 104 extends along the extending direction of the second tooth side surface), and the second edge portion 104 is the first tooth base side surface 33a (1) (first) of the tooth 32 (1) on the other side in the circumferential direction. Extends along the extending direction of the teeth side).

次に、図６に示されているように、第１のＵ相部分固定子巻線束５１（Ｕ１）に装着された相間絶縁部材１００より径方向内周側に、第１のＷ相部分固定子巻線束５３（Ｗ１）を挿入する。
この時、相間絶縁部材１００の、第１の縁部分１０１の、少なくとも第１の縁部１００ａを含む部分が、第１のＵ相部分固定子巻線束５１（Ｕ１）と周方向一方側のティース３２（２）の第２のティース基部側面３３ｂ（２）との間に挿入（配置）されているとともに、第２の縁部分１０４の、少なくとも第２の縁部１００ｂを含む部分が、第１のＵ相部分固定子巻線束５１（Ｕ１）と周方向他方側のティース３２（１）の第１のティース基部側面３３ａ（１）との間に挿入（配置）されているため、第１のＵ相部分固定子巻線束５１（Ｕ１）と第１のＷ相部分固定子巻線束５３（Ｗ１）が接触することはない。これは、電動機運転中に振動等が加わった場合でも同様である。 Next, as shown in FIG. 6, the first W-phase partial fixing is performed on the inner peripheral side in the radial direction from the interphase insulating member 100 mounted on the first U-phase partial stator winding bundle 51 (U1). Insert the child winding bundle 53 (W1).
At this time, the portion of the first edge portion 101 of the interphase insulating member 100 including at least the first edge portion 100a is a tooth on one side in the circumferential direction with the first U-phase portion stator winding bundle 51 (U1). The portion of the second edge portion 104 including at least the second edge portion 100b is inserted (arranged) between the second tooth base side surface 33b (2) of 32 (2) and the first portion. Since it is inserted (arranged) between the U-phase partial stator winding bundle 51 (U1) and the first tooth base side surface 33a (1) of the teeth 32 (1) on the other side in the circumferential direction, the first The U-phase partial stator winding bundle 51 (U1) and the first W-phase partial stator winding bundle 53 (W1) do not come into contact with each other. This is the same even when vibration or the like is applied during the operation of the motor.

相間絶縁部材の第２の実施形態２００を、図７を参照して説明する。
第２の実施形態の相間絶縁部材２００は、第１の実施形態の相間絶縁部材１００と同様に、第１の縁部２００ａ、第２の縁部２００ｂ、第３の縁部２００ｃ、第４の縁部２００ｄを有する四角形の絶縁フィルムを折り曲げて形成されている。相間絶縁部材２００は、第１の縁部２００ａを含む第１の縁部分２０１、第２の縁部１００ｂを含む第２の縁部分２０６、第１の縁部分２０１と第２の縁部分２０６の間に設けられている第１の分割部分２０２、第２の分割部分２０３、第３の分割部分２０４および第４の分割部分２０５を有している。また、第１の縁部分２０１と第１の分割部分２０２との間の第１の折り曲げ部２００Ａ、第１の分割部分２０２と第２の分割部分２０３との間の第２の折り曲げ部２００Ｂ、第２の分割部分２０３と第３の分割部分２０４との間の第３の折り曲げ部２００Ｃ、第３の分割部分２０４と第４の分割部分２０５との間の第４の折り曲げ部２００Ｄ、第４の分割部分２０５と第２の縁部分２０６との間の第５の折り曲げ部２００Ｅの箇所で、軸方向に直角な断面が波形状を有するように（軸方向両側の第３の縁部２００ｃおよび第４の縁部２００ｄが波形状となるように）折り曲げられている。本実施形態では、中央部分は、第１の分割部分２０２〜第４の分割部分２０５の４つの分割部分により形成されている。なお、第１〜第５の折り曲げ部２００Ａ〜２００Ｅの箇所で、交互に逆方向に折り曲げられている。
本実施形の相間絶縁部材２００は、第１の縁部２００ａと第２の縁部２００ｂが周方向一方側と周方向他方側に配置され、軸方向に直角な断面（第３の縁部２００ｃと第４の縁部２００ｄ）が波形状を有しているため、第１の実施形態の相間絶縁部材１００と同様に、径方向に沿った力が加わると、径方向に沿った長さが短くなるとともに、周方向に沿った長さが長くなるように弾性変形する。 A second embodiment 200 of the interphase insulating member will be described with reference to FIG.
The interphase insulating member 200 of the second embodiment has the same as the interphase insulating member 100 of the first embodiment, that is, the first edge portion 200a, the second edge portion 200b, the third edge portion 200c, and the fourth edge portion 200c. It is formed by bending a quadrangular insulating film having an edge portion 200d. The interphase insulating member 200 includes a first edge portion 201 including a first edge portion 200a, a second edge portion 206 including a second edge portion 100b, and a first edge portion 201 and a second edge portion 206. It has a first divided portion 202, a second divided portion 203, a third divided portion 204, and a fourth divided portion 205 provided between them. Further, a first bent portion 200A between the first edge portion 201 and the first divided portion 202, a second bent portion 200B between the first divided portion 202 and the second divided portion 203, A third bent portion 200C between the second divided portion 203 and the third divided portion 204, a fourth bent portion 200D between the third divided portion 204 and the fourth divided portion 205, and a fourth. At the fifth bent portion 200E between the divided portion 205 and the second edge portion 206, the cross section perpendicular to the axial direction has a wavy shape (third edge portions 200c on both sides in the axial direction and the third edge portion 200c on both sides in the axial direction). It is bent (so that the fourth edge 200d has a wavy shape). In the present embodiment, the central portion is formed by four divided portions of the first divided portion 202 to the fourth divided portion 205. It should be noted that the first to fifth bent portions 200A to 200E are alternately bent in opposite directions.
In the interphase insulating member 200 of the present embodiment, the first edge portion 200a and the second edge portion 200b are arranged on one side in the circumferential direction and the other side in the circumferential direction, and the cross section perpendicular to the axial direction (third edge portion 200c). And the fourth edge portion 200d) have a wavy shape, so that when a force along the radial direction is applied, the length along the radial direction becomes longer, as in the case of the interphase insulating member 100 of the first embodiment. As it becomes shorter, it elastically deforms so that the length along the circumferential direction becomes longer.

相間絶縁部材の第３の実施形態３００を、図８を参照して説明する。
第３の実施形態の相間絶縁部材３００は、第１の実施形態の相間絶縁部材１００と同様に、第１の縁部３００ａ、第２の縁部３００ｂ、第３の縁部３００ｃ、第４の縁部３００ｄを有する四角形の絶縁フィルムを折り曲げて形成されている。相間絶縁部材３００は、第１の縁部３００ａを含む第１の縁部分３０１、第２の縁部３００ｂを含む第２の縁部分３０３、第１の縁部分３０１と第２の縁部分３０３の間に設けられている中央部分３０２を有している。また、第１の縁部分３０１と中央部分３０２との間の第１の折り曲げ部３００Ａ、中央部分３０２と第２の縁部分３０３との間の第２の折り曲げ部３００Ｂの箇所で折り曲げられている。なお、第１の折り曲げ部３００Ａと第２の折り曲げ部３００Ｂの箇所で、同じ方向に折り曲げられている。本実施形態では、中央部分は、軸方向に直角な断面が、凸状の曲線となるように（軸方向両側の第３の縁部３００ｃおよび第４の縁部３００ｄが、凸状の曲線となるように）形成されている。典型的には、円弧状に形成される。曲線は、好適には、径方向外周側に凸状に形成される。
本実施形の相間絶縁部材３００は、第１の縁部３００ａと第２の縁部３００ｂが周方向一方側と周方向他方側に配置され、軸方向に直角な断面（第３の縁部３００ｃと第４の縁部３００ｄ）が曲線形状を有しているため、第１の実施形態の相間絶縁部材１００と同様に、径方向に沿った力が加わると、径方向に沿った長さが短くなるとともに、周方向に沿った長さが長くなるように弾性変形する。 A third embodiment 300 of the interphase insulating member will be described with reference to FIG.
The interphase insulating member 300 of the third embodiment has the same as the interphase insulating member 100 of the first embodiment, that is, the first edge portion 300a, the second edge portion 300b, the third edge portion 300c, and the fourth edge portion 300c. It is formed by bending a quadrangular insulating film having an edge portion 300d. The interphase insulating member 300 includes a first edge portion 301 including a first edge portion 300a, a second edge portion 303 including a second edge portion 300b, and a first edge portion 301 and a second edge portion 303. It has a central portion 302 provided between them. Further, it is bent at a position of a first bent portion 300A between the first edge portion 301 and the central portion 302, and a second bent portion 300B between the central portion 302 and the second edge portion 303. .. It should be noted that the first bent portion 300A and the second bent portion 300B are bent in the same direction. In the present embodiment, in the central portion, the cross section perpendicular to the axial direction has a convex curve (the third edge 300c and the fourth edge 300d on both sides in the axial direction have a convex curve). Is formed (to be). Typically, it is formed in an arc shape. The curve is preferably formed in a convex shape on the outer peripheral side in the radial direction.
In the interphase insulating member 300 of the present embodiment, the first edge portion 300a and the second edge portion 300b are arranged on one side in the circumferential direction and the other side in the circumferential direction, and the cross section perpendicular to the axial direction (third edge portion 300c). And the fourth edge 300d) have a curved shape, so that when a force along the radial direction is applied, the length along the radial direction becomes longer, as in the case of the interphase insulating member 100 of the first embodiment. As it becomes shorter, it elastically deforms so that the length along the circumferential direction becomes longer.

本発明は、以下のように構成することもできる。The present invention can also be configured as follows.
「（態様１）周方向に隣接するティースによって形成されるスロット内に、径方向外周側と径方向内周側に異なる相の固定子巻線が挿入されているとともに、径方向外周側に挿入されている固定子巻線と径方向内周側に挿入されている固定子巻線との間に、周方向および軸方向に沿って延在する相間絶縁部材が配置されている固定子であって、"(Aspect 1) In the slot formed by the teeth adjacent to each other in the circumferential direction, stator windings having different phases are inserted on the outer peripheral side in the radial direction and the inner peripheral side in the radial direction, and are inserted on the outer peripheral side in the radial direction. A stator in which an interphase insulating member extending along the circumferential direction and the axial direction is arranged between the stator winding that is provided and the stator winding that is inserted on the inner peripheral side in the radial direction. hand,
前記ティースは、周方向一方側に第１のティース側面を有し、周方向他方側に第２のティース側面を有し、 The teeth have a first tooth side surface on one side in the circumferential direction and a second tooth side surface on the other side in the circumferential direction.
前記相間絶縁部材は、周方向一方側の第１の縁部を含む第１の縁部分と、周方向他方側の第２の縁部を含む第２の縁部分と、前記第１の縁部分と前記第２の縁部分との間に設けられている中央部分とを有しているとともに、前記第１の縁部分と前記中央部分との間および前記第２の縁部分と前記中央部分との間に設けられている、軸方向に沿った折り曲げ部の箇所で折り曲げられており、The interphase insulating member includes a first edge portion including a first edge portion on one side in the circumferential direction, a second edge portion including a second edge portion on the other side in the circumferential direction, and the first edge portion. It has a central portion provided between the first edge portion and the second edge portion, and between the first edge portion and the central portion, and between the second edge portion and the central portion. It is bent at the bent part along the axial direction provided between the two.
前記中央部分は、周方向に沿って伸縮可能に構成され、The central portion is configured to be stretchable along the circumferential direction.
前記第１の縁部が、前記径方向外周側に挿入されている固定子巻線と、前記周方向に隣接するティースのうちの周方向一方側のティースの第２のティース側面との間に配置されているとともに、前記第２の縁部が、前記径方向外周側に挿入されている固定子巻線と、前記周方向に隣接するティースのうちの周方向他方側のティースの第１のティース側面との間に配置されていることを特徴とする固定子。」The first edge portion is between the stator winding inserted on the outer peripheral side in the radial direction and the second tooth side surface of the tooth on one side in the circumferential direction among the teeth adjacent in the circumferential direction. The second edge is the first of the stator windings inserted on the outer peripheral side in the radial direction and the teeth on the other side in the circumferential direction among the teeth adjacent to the circumferential direction. A stator characterized by being placed between the sides of the teeth. "
「（態様２）態様１の固定子であって、前記相間絶縁部材の前記中央部分は、複数の分割部分に区分され、各分割部分の間に設けられている、軸方向に沿った折り曲げ部の箇所で折り曲げられていることを特徴とする固定子。」"(Aspect 2) The stator of Aspect 1, the central portion of the interphase insulating member is divided into a plurality of divided portions, and a bent portion along the axial direction provided between the divided portions. A stator characterized by being bent at the point of. "
「（態様３）態様１または２の固定子であって、前記固定子巻線は、前記ティースに対して周方向両側に形成されたスロットに挿入可能な形状を有する固定子巻線束に形成されていることを特徴とする固定子。」"(Aspect 3) The stator of aspect 1 or 2, wherein the stator windings are formed in a stator winding bundle having a shape that can be inserted into slots formed on both sides in the circumferential direction with respect to the teeth. Stator characterized by being. "
「（態様４）態様３の固定子であって、前記固定子巻線束は、前記ティースに対して周方向両側に形成されたスロットの径方向外周側に挿入可能な形状を有する固定子巻線束、前記ティースに対して周方向両側に形成されたスロットの径方向内周側に挿入可能な形状を有する固定子巻線束、前記ティースに対して周方向両側に形成されたスロットのうちの一方のスロットの径方向外周側と他方のスロットの径方向内周側に挿入可能な形状を有する固定子巻線束を含んでいることを特徴とする固定子。」"(Aspect 4) The stator winding bundle according to the third aspect, wherein the stator winding bundle has a shape that can be inserted into the radial outer peripheral side of a slot formed on both sides in the circumferential direction with respect to the teeth. , A stator winding bundle having a shape that can be inserted into the radial inner peripheral side of the slots formed on both sides in the circumferential direction with respect to the teeth, and one of the slots formed on both sides in the circumferential direction with respect to the teeth. A stator characterized by including a stator winding bundle having a shape that can be inserted into the radial outer peripheral side of the slot and the radial inner peripheral side of the other slot. "
「（態様５）固定子と、回転子とを備える電動機であって、前記固定子として態様１〜４のうちのいずれかの固定子が用いられていることを特徴とする電動機。」"(Aspect 5) An electric motor including a stator and a rotor, wherein any of the stators of aspects 1 to 4 is used as the stator."

本発明は、実施形態で説明した構成に限定されず、種々の変更、追加、削除が可能である。
ティースに対して周方向両側に形成されたスロットの径方向外周側に挿入可能な形状を有する固定子巻線束、ティースに対して周方向両側に形成されたスロットの径方向内周側に挿入可能な形状を有する固定子巻線束、ティースに対して周方向両側に形成されたスロットのうちの一方のスロットの径方向外周側と他方のスロットの径方向内周側に挿入可能な形状を有する固定子巻線束の３種類の固定子巻線束を用いて固定子巻線をスロット内に挿入したが、固定子巻線をスロット内に挿入する際に用いる固定子巻線束はこれに限定されない。例えば、スロット数が偶数である場合には、ティースに対して周方向両側に形成されたスロットの径方向外周側に挿入可能な形状を有する固定子巻線束とティースに対して周方向両側に形成されたスロットの径方向内周側に挿入可能な形状を有する固定子巻線束の２種類の固定子巻線束を用いて固定子巻線をスロット内に挿入することができる。
固定子巻線を、ティースに対して周方向両側に形成されたスロットに挿入可能な形状を有する固定子巻線束に巻き付けた状態でスロットに挿入する方式（インサータ方式）を用いたが、固定子巻線をスロットに挿入する方法はこれに限定されない。本発明の相間絶縁部材は、スロットの径方向外周側と径方向内周側に、異なる相の固定子巻線が挿入される固定子あるいは電動機に用いることができる。 The present invention is not limited to the configuration described in the embodiment, and various changes, additions, and deletions can be made.
Stator winding bundle having a shape that can be inserted into the radial outer peripheral side of the slot formed on both sides in the circumferential direction with respect to the teeth, and can be inserted into the radial inner peripheral side of the slot formed on both sides in the circumferential direction with respect to the teeth. Stator winding bundle with a different shape, fixed with a shape that can be inserted into the radial outer peripheral side of one slot and the radial inner peripheral side of the other slot among the slots formed on both sides in the circumferential direction with respect to the teeth. Although the stator winding is inserted into the slot using three types of stator winding bundles of the child winding bundle, the stator winding bundle used when inserting the stator winding into the slot is not limited to this. For example, when the number of slots is even, the stator winding bundle having a shape formed on both sides in the circumferential direction with respect to the teeth and having a shape that can be inserted on the outer peripheral side in the radial direction and the stator winding bundle formed on both sides in the circumferential direction with respect to the teeth. The stator winding can be inserted into the slot by using two types of stator winding bundles having a shape that can be inserted into the radial inner peripheral side of the slot.
A method (insertor method) was used in which the stator winding was wound into a slot with a stator winding bundle having a shape that could be inserted into a slot formed on both sides in the circumferential direction with respect to the teeth, but the stator was used. The method of inserting the winding into the slot is not limited to this. The interphase insulating member of the present invention can be used for a stator or an electric motor in which stator windings of different phases are inserted on the radial outer peripheral side and the radial inner peripheral side of the slot.

１０電動機
２０固定子
３０固定子コア
３１ヨーク
３１ａヨーク内周面
３２ティース
３３ティース基部
３３ａ第１のティース基部側面（周方向一方側のティース基部側面）
３３ｂ第２のティース基部側面（周方向他方側のティース基部側面）
３４ティース先端部
３４ａティース先端部内周面
３４ｂ第１のティース先端部側面（周方向一方側のティース先端部側面）
３４ｃ第２のティース先端部側面（周方向他方側のティース先端部側面）
３４ｄ第１のティース先端部外周面（周方向一方側のティース先端部外周面）
３４ｅ第２のティース先端部外周面（周方向他方側のティース先端部外周面）
３５スロット
４０スロット絶縁部材
５１〜５３部分固定子巻線（固定子巻線束）
５１ａ内周部
５１ｂ第１の側部
５１ｃ第２の側部
６０ウェッジ
１００相間絶縁部材
１００ａ第１の縁部（周方向一方側の縁部）
１００ｂ第２の縁部（周方向他方側の縁部）
１００ｃ第３の縁部（軸方向一方側の縁部）
１００ｄ第４の縁部（軸方向他方側の縁部）
１０１第１の縁部分
１０２第１の分割部分
１０３第２の分割部分
１０４第２の縁部分
１００Ａ第１の折り曲げ部
１００Ｂ第２の折り曲げ部
１００Ｃ第３の折り曲げ部
２００相間絶縁部材
２００ａ第１の縁部（周方向一方側の縁部）
２００ｂ第２の縁部（周方向他方側の縁部）
２００ｃ第３の縁部（軸方向一方側の縁部）
２００ｄ第４の縁部（軸方向他方側の縁部）
２０１第１の縁部分
２０２第１の分割部分
２０３第２の分割部分
２０４第３の分割部分
２０５第４の分割部分
２０６第２の縁部分
２００Ａ第１の折り曲げ部
２００Ｂ第２の折り曲げ部
２００Ｃ第３の折り曲げ部
２００Ｄ第４の折り曲げ部
２００Ｅ第５の折り曲げ部
３００相間絶縁部材
３００ａ第１の縁部（周方向一方側の縁部）
３００ｂ第２の縁部（周方向他方側の縁部）
３００ｃ第３の縁部（軸方向一方側の縁部）
３００ｄ第４の縁部（軸方向他方側の縁部）
３０１第１の縁部分
３０２中央部分
３０３第２の縁部分
３００Ａ第１の折り曲げ部
３００Ｂ第２の折り曲げ部 10 Motor 20 Stator 30 Stator Core 31 York 31a York inner peripheral surface 32 Teeth 33 Teeth base 33a First tooth base side surface (one side of the tooth base in the circumferential direction)
33b Second tooth base side surface (teeth base side surface on the other side in the circumferential direction)
34 Teeth tip 34a Teeth tip inner peripheral surface 34b First tooth tip side surface (teeth tip side surface on one side in the circumferential direction)
34c Second tooth tip side surface (teeth tip side surface on the other side in the circumferential direction)
34d Outer peripheral surface of the tip of the first tooth (outer peripheral surface of the tip of the tooth on one side in the circumferential direction)
34e Outer peripheral surface of the tip of the second tooth (outer peripheral surface of the tip of the tooth on the other side in the circumferential direction)
35 Slot 40 Slot Insulation Member 51-53 Partial Stator Winding (Stator Winding Bundle)
51a Inner peripheral portion 51b First side portion 51c Second side portion 60 Wedge 100 Interphase insulating member 100a First edge portion (edge portion on one side in the circumferential direction)
100b Second edge (edge on the other side in the circumferential direction)
100c Third edge (one side edge in the axial direction)
100d 4th edge (edge on the other side in the axial direction)
101 First edge portion 102 First division portion 103 Second division portion 104 Second edge portion 100A First bending portion 100B Second bending portion 100C Third bending portion 200 Interphase insulating member 200a First Edge (edge on one side in the circumferential direction)
200b Second edge (edge on the other side in the circumferential direction)
200c Third edge (one side edge in the axial direction)
200d 4th edge (edge on the other side in the axial direction)
201 First edge portion 202 First division portion 203 Second division portion 204 Third division portion 205 Fourth division portion 206 Second edge portion 200A First bending portion 200B Second bending portion 200C Second 3 Bent portion 200D 4th bent portion 200E 5th bent portion 300 Interphase insulating member 300a 1st edge portion (edge portion on one side in the circumferential direction)
300b Second edge (edge on the other side in the circumferential direction)
300c Third edge (one side edge in the axial direction)
300d 4th edge (edge on the other side in the axial direction)
301 First edge portion 302 Central portion 303 Second edge portion 300A First bent portion 300B Second bent portion

Claims

In the slot formed by the teeth adjacent to each other in the circumferential direction, stator windings having different phases are inserted on the outer peripheral side in the radial direction and the inner peripheral side in the radial direction, and the stator is inserted on the outer peripheral side in the radial direction. A stator in which an interphase insulating member extending along the circumferential direction and the axial direction is arranged between the winding and the stator winding inserted on the inner peripheral side in the radial direction.
The teeth have a first tooth side surface on one side in the circumferential direction and a second tooth side surface on the other side in the circumferential direction.
The interphase insulating member includes a first edge portion including a first edge portion on one side in the circumferential direction, a second edge portion including a second edge portion on the other side in the circumferential direction, and the first edge portion. It is provided between the first edge portion and the second edge portion, has a central portion formed by the first divided portion and the second divided portion, and has the first edge portion and the first divided portion. A portion of the first bent portion along the axial direction provided between the divided portion and the axial direction provided between the first divided portion and the second divided portion. Along the second bent portion and a third bent portion along the axial direction provided between the second divided portion and the second edge portion, perpendicular to the axial direction. The cross section is alternately bent in the opposite direction so as to have a W shape.
The central portion is configured to be stretchable along the circumferential direction.
The portion of the first edge portion including at least the first edge portion is the stator winding inserted on the radial outer peripheral side and one side of the teeth adjacent to the circumferential direction in the circumferential direction. A stator that is arranged between the teeth and the side surface of the second teeth, and the portion of the second edge portion including at least the second edge portion is inserted on the outer peripheral side in the radial direction. A stator characterized in that it is arranged between the winding and the first tooth side surface of the tooth on the other side in the circumferential direction among the teeth adjacent to the circumferential direction.

The stator according to claim 1,
The stator winding is formed in a stator winding bundle having a shape that can be inserted into slots formed on both sides in the circumferential direction with respect to the teeth.

The stator according to claim 2,
The stator winding bundle is a stator winding bundle having a shape that can be inserted into the radial outer peripheral side of a slot formed on both sides in the circumferential direction with respect to the tooth, and a slot formed on both sides in the circumferential direction with respect to the tooth. Stator winding bundle having a shape that can be inserted into the radial inner peripheral side of the A stator characterized in that it contains a stator winding bundle having a shape that can be inserted on the circumferential side.

An electric motor equipped with a stator and a rotor,
An electric motor characterized in that the stator according to any one of claims 1 to 3 is used as the stator.