JP2009171720A - Stator of rotary electric machine - Google Patents

Stator of rotary electric machine Download PDF

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JP2009171720A
JP2009171720A JP2008006400A JP2008006400A JP2009171720A JP 2009171720 A JP2009171720 A JP 2009171720A JP 2008006400 A JP2008006400 A JP 2008006400A JP 2008006400 A JP2008006400 A JP 2008006400A JP 2009171720 A JP2009171720 A JP 2009171720A
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insulating sheet
stator
winding
iron core
insulator
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JP2009171720A5 (en
JP4812781B2 (en
Inventor
Takashi Ishigaki
Koji Masumoto
Takayuki Onihashi
Taku Sekiya
Kazuhiro Shono
Kazuyuki Yamamoto
浩二 増本
一之 山本
一弘 庄野
隆士 石垣
卓 関谷
隆之 鬼橋
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Mitsubishi Electric Corp
三菱電機株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator of a rotary electric machine for preventing a contact of adjacent windings even after incorporation magnetization is performed, for suppressing damage of insulating coating of winding to be the minimum and securing long reliability of insulation. <P>SOLUTION: In the stator of the rotary electric machine, winding is wound around a teeth part where an insulating sheet fixed by an insulator is arranged. The insulating sheet is formed of an installation part installed on the teeth part and extending parts extending from both ends of the installation part. The installation part is disposed between thin parts arranged at end parts of depression parts of the respective insulators. The extending parts are doubly overlapped and are arranged by covering winding exposed to an opening part side of the insulator. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、回転電機の固定子に関するものであって、特に、分割鉄心構造の集中巻固定子における巻線の絶縁構造に関するものである。   The present invention relates to a stator of a rotating electrical machine, and more particularly to an insulating structure for windings in a concentrated winding stator having a split iron core structure.
近年、モータ等の回転電機の小型、高出力化に伴い、積層鉄心からなる固定子の巻線量が多くなり、隣接する巻線同士が接するようになっている。そのため、隣接する集中巻で形成された巻線間における十分な絶縁性の確保が不可欠となっている。
従来、回転電機の固定子では、積層鉄心のティース部の両側に、絶縁シートを積層面と接して装着し、この絶縁シートを介して巻線が巻回されている。
そこで、このティース部に設けられた絶縁シートの隣接する巻線と対向する両端を延長し、ティース部の一方側は、折り曲げた時、両端の延長部が重なる絶縁シートとし、ティース部の他方側は、折り曲げた時、両端の延長部が重ならない絶縁シートとし、隣接する巻線間に、絶縁シートが重なる延長部と絶縁シートが重ならない延長部とが接して設けられた回転電機の固定子が開示されている(例えば、特許文献1参照)。
In recent years, with the reduction in size and increase in output of rotating electrical machines such as motors, the amount of winding of a stator composed of a laminated core increases, and adjacent windings come into contact with each other. Therefore, it is indispensable to ensure sufficient insulation between windings formed by adjacent concentrated windings.
2. Description of the Related Art Conventionally, in a stator of a rotating electrical machine, an insulating sheet is mounted on both sides of a tooth portion of a laminated core in contact with the laminated surface, and a winding is wound through the insulating sheet.
Therefore, both ends of the insulating sheet provided in the tooth portion facing the adjacent windings are extended, and one side of the tooth portion is an insulating sheet in which the extension portions at both ends overlap when bent, and the other side of the tooth portion Is an insulating sheet in which the extension portions at both ends do not overlap when bent, and an extension portion where the insulation sheet overlaps with an extension portion where the insulation sheet does not overlap between adjacent windings. Is disclosed (for example, see Patent Document 1).
特開平11−341747号公報(第2頁、第2図)Japanese Patent Laid-Open No. 11-341747 (second page, FIG. 2)
特許文献1に記載の回転電機の固定子では、各積層鉄心のティース部に巻線を巻回した後、各積層鉄心を接合し、固定子を形成する。この固定子は隣接する巻線が絶縁シートを介して接触しており、隣接する巻線間の絶縁性は、十分に確保されている。
しかし、集中巻で巻線を形成した固定子において、2相通電の組込着磁を行うと、通電した巻線が大きく膨らみ、隣接する非通電の巻線に加重を加え、非通電の巻線を凹ませる様に変形させる。
そのため、通電側の巻線における、重ねて設けられた絶縁シートの重なり合う部分が開くように変形し、隣接する巻線同士が直接接触して、巻線の絶縁皮膜が損傷するとの問題があった。また、隣接する巻線間に挟まれた絶縁シートは、枚数の少ないところでは1枚であり、隣接する巻線から力を受けることで、絶縁シートが破れて、やはり、隣接する巻線同士が接触するとの問題があった。また、隣接する巻線同士が接触した時、巻線の絶縁皮膜の損傷が、例え軽微であっても、巻線同士が直接触れることで、巻線の接触部の絶縁皮膜には、運転時の電界が繰り返し印加されることになり、長期の使用で絶縁皮膜が劣化して固定子の寿命が短くなるとの問題があった。
In the stator of a rotating electrical machine described in Patent Document 1, after winding a winding around a tooth portion of each laminated iron core, the laminated iron cores are joined to form a stator. In this stator, adjacent windings are in contact via an insulating sheet, and insulation between adjacent windings is sufficiently ensured.
However, if a two-phase energized built-in magnetizing is performed on a stator in which windings are formed with concentrated windings, the energized windings expand greatly, applying a weight to the adjacent non-energized windings, Deform the line to make it concave.
For this reason, there is a problem that in the winding on the energization side, the overlapping portions of the insulating sheets provided in an overlapping manner are deformed so that adjacent windings are in direct contact with each other and the insulation film of the winding is damaged. . In addition, the insulation sheet sandwiched between adjacent windings is one sheet when the number is small, and the insulation sheet is broken by receiving a force from the adjacent windings. There was a problem with contact. In addition, when adjacent windings are in contact with each other, even if the insulation film damage on the windings is minor, even if the windings are in direct contact with each other, This electric field is repeatedly applied, and there has been a problem that the life of the stator is shortened due to deterioration of the insulating film after long-term use.
この発明は、上述のような課題を解決するためになされたもので、その目的は、集中巻で組込着磁を行った後でも、隣接する巻線の接触を防止し、巻線の絶縁皮膜の損傷を最低限に抑え、絶縁の長期信頼性を確保できる回転電機の固定子を提供することである。   The present invention has been made to solve the above-mentioned problems, and its purpose is to prevent contact between adjacent windings even after performing built-in magnetization with concentrated winding, and to insulate the windings. The object is to provide a stator for a rotating electrical machine that can minimize damage to a film and ensure long-term reliability of insulation.
本発明に係わる回転電機の固定子は、鉄心と、本体部と本体部に設けられ且つ鉄心のティース部に沿うコの字形状の押付部とで形成されたインシュレータと、鉄心のティース部に装着され、インシュレータでティース部に固定された絶縁シートと、インシュレータで固定された絶縁シートが設けられたティース部に巻回された巻線とで形成され、且つ複数個の鉄心が環状に接合された回転電機の固定子であって、絶縁シートが、ティース部に装着される装着部と装着部の両端から延長している延長部とで形成され、装着部が、鉄心の軸方向の両端に各設置されたインシュレータの押付部の薄肉部間に設置され、延長部が、2重に重なってインシュレータの開口部側に露出する巻線を覆って設置されたものである。   A stator of a rotating electrical machine according to the present invention is mounted on an iron core, an insulator formed by a main body portion and a U-shaped pressing portion that is provided on the main body portion and extends along the tooth portion of the iron core, and is mounted on the tooth portion of the iron core. The insulating sheet fixed to the tooth portion by the insulator and the winding wound around the tooth portion provided with the insulating sheet fixed by the insulator, and the plurality of iron cores are joined in a ring shape A stator of a rotating electrical machine, wherein an insulating sheet is formed by a mounting portion that is mounted on a tooth portion and an extending portion that extends from both ends of the mounting portion, and the mounting portions are respectively provided at both ends in the axial direction of the iron core. It is installed between the thin parts of the pressing part of the installed insulator, and the extension part is installed so as to cover the windings that are doubled and exposed to the opening side of the insulator.
本発明に係わる回転電機の固定子は、鉄心と、本体部と本体部に設けられ且つ鉄心のティース部に沿うコの字形状の押付部とで形成されたインシュレータと、鉄心のティース部に装着され、インシュレータでティース部に固定された絶縁シートと、インシュレータで固定された絶縁シートが設けられたティース部に巻回された巻線とで形成され、且つ複数個の鉄心が環状に接合された回転電機の固定子であって、絶縁シートが、ティース部に装着される装着部と装着部の両端から延長している延長部とで形成され、装着部が、鉄心の軸方向の両端に各設置されたインシュレータの押付部の薄肉部間に設置され、延長部が、2重に重なってインシュレータの開口部側に露出する巻線を覆って設置されたものであり、2相通電による組込着磁後も、隣接する巻線間において優れた絶縁性を維持できる。   A stator of a rotating electrical machine according to the present invention is mounted on an iron core, an insulator formed by a main body portion and a U-shaped pressing portion that is provided on the main body portion and extends along the tooth portion of the iron core, and is mounted on the tooth portion of the iron core. The insulating sheet fixed to the tooth portion by the insulator and the winding wound around the tooth portion provided with the insulating sheet fixed by the insulator, and the plurality of iron cores are joined in a ring shape A stator of a rotating electrical machine, wherein an insulating sheet is formed by a mounting portion that is mounted on a tooth portion and an extending portion that extends from both ends of the mounting portion, and the mounting portions are respectively provided at both ends in the axial direction of the iron core. It is installed between the thin parts of the pressed part of the installed insulator, and the extension part is installed so as to cover the windings that are overlapped and exposed on the opening side of the insulator, and it is incorporated by two-phase energization Even after magnetization It can maintain excellent insulation between adjacent windings.
実施の形態1.
図1は、本発明の実施の形態1に係わる回転電機の固定子の正面断面の部分模式図である。
図2は、本発明の実施の形態1に係わる回転電機の固定子の分割コアの側面模式図である。
図1と図2に示すように、本実施の形態の回転電機の固定子100は、分割コアを形成するティースごとに分割された積層鉄心1に絶縁シート3を接して設け、絶縁シート3が設けられた積層鉄心1の軸方向の両端にインシュレータ2となる枠体を挿入して、絶縁シート3を、積層鉄心1に固定している。
そして、詳細を後述する絶縁シート3とインシュレータ2とで絶縁された積層鉄心1には、巻線4が設けられ、この巻線4を設けた積層鉄心1が環状に接続されて、回転電機の固定子100(全体は図示せず)を形成している。
Embodiment 1 FIG.
FIG. 1 is a partial schematic view of a front cross section of a stator of a rotating electric machine according to Embodiment 1 of the present invention.
FIG. 2 is a schematic side view of the split core of the stator of the rotating electric machine according to the first embodiment of the present invention.
As shown in FIGS. 1 and 2, the stator 100 of the rotating electrical machine according to the present embodiment is provided with an insulating sheet 3 in contact with a laminated core 1 divided for each tooth forming a divided core, The insulating sheet 3 is fixed to the laminated iron core 1 by inserting frame bodies serving as insulators 2 at both ends in the axial direction of the provided laminated iron core 1.
And the laminated iron core 1 insulated by the insulating sheet 3 and the insulator 2 which will be described in detail later is provided with a winding 4, and the laminated iron core 1 provided with this winding 4 is connected in an annular shape, so that A stator 100 (the whole is not shown) is formed.
図3は、本発明の実施の形態1に係わる回転電機の固定子に用いられる絶縁シートの斜視模式図である。
図4は、本発明の実施の形態1に係わる回転電機の固定子に用いられるインシュレータの斜視模式図である。
FIG. 3 is a schematic perspective view of an insulating sheet used for the stator of the rotating electrical machine according to the first embodiment of the present invention.
FIG. 4 is a schematic perspective view of an insulator used in the stator of the rotating electrical machine according to the first embodiment of the present invention.
本実施の形態では、図3に示すように、絶縁シート3は、積層鉄心1のティース部に装着される部分(装着部と記す)3aと、絶縁シート3における積層鉄心1の軸方向と垂直な方向に装着部3aから延長された部分(延長部と記す)3bとからなっている。装着部3aは、底面部と両側面部とからなるコの字形状をしている。そして、絶縁シート3の積層鉄心1の軸方向に平行な方向(絶縁シートの軸方向と記す)では、延長部3bの長さが、装着部3aの長さより長くなっている。
本実施の形態では、図1に示すように、絶縁シート3の延長部3bは内側に折り曲げられ、両方の延長部3bが重なり合って、巻線4をカバーしている。すなわち、隣接する巻線4が、4枚の絶縁シート3を介して接している。そして、絶縁シート3の延長部3bの重なり合う長さをaとし、インシュレータ2の隣接する巻線と対向する開口部の長さをbとすると、a/bは0.7〜1の範囲となっている。
In the present embodiment, as shown in FIG. 3, the insulating sheet 3 includes a portion (referred to as a mounting portion) 3 a that is attached to the tooth portion of the laminated core 1 and a direction perpendicular to the axial direction of the laminated core 1 in the insulating sheet 3. It consists of a part (denoted as an extended part) 3b extended from the mounting part 3a in any direction. The mounting portion 3a has a U-shape composed of a bottom surface portion and both side surface portions. In the direction parallel to the axial direction of the laminated core 1 of the insulating sheet 3 (referred to as the axial direction of the insulating sheet), the length of the extension portion 3b is longer than the length of the mounting portion 3a.
In the present embodiment, as shown in FIG. 1, the extension 3 b of the insulating sheet 3 is bent inward, and both the extensions 3 b overlap to cover the winding 4. That is, the adjacent windings 4 are in contact with each other through the four insulating sheets 3. Then, a / b is in the range of 0.7 to 1 where a is the overlapping length of the extension 3b of the insulating sheet 3 and b is the length of the opening facing the adjacent winding of the insulator 2. ing.
また、図2に示すように、絶縁シートの軸方向における延長部3bの長さcは、積層鉄心1の軸方向両端から突出する巻線部も含めた長さd以上としている。すなわち、絶縁シートの軸方向における、装着部3aより長い延長部3bの部分は、積層鉄心1の軸方向両端から突出する巻線部をカバーしている。
本実施の形態では、絶縁シート3の材料には、例えば、ポリエチレンテレフタレートのフィルムが用いられ、これを切り抜いた後、折り曲げて絶縁シート3を形成している。
また、絶縁シート3の厚みは0.1〜0.3mm程度が好ましい。絶縁シート3の厚みが、0.1mmより薄いと、絶縁性に不安が残り、0.3mmより厚くなると、材料コストが高くなる。
Further, as shown in FIG. 2, the length c of the extension portion 3 b in the axial direction of the insulating sheet is not less than the length d including the winding portions protruding from both ends of the laminated core 1 in the axial direction. That is, the portion of the extended portion 3 b that is longer than the mounting portion 3 a in the axial direction of the insulating sheet covers the winding portion that protrudes from both axial ends of the laminated core 1.
In the present embodiment, for example, a polyethylene terephthalate film is used as the material of the insulating sheet 3, and after the film is cut out, the insulating sheet 3 is formed by bending.
The thickness of the insulating sheet 3 is preferably about 0.1 to 0.3 mm. If the thickness of the insulating sheet 3 is less than 0.1 mm, the insulating property remains uneasy, and if it is greater than 0.3 mm, the material cost increases.
本実施の形態では、図4に示すように、インシュレータ2は、本体部2aと、本体部2aの積層鉄心1の軸方向の端面と接する側に設けられた押付部2bとで構成されている。そして、押付部2bは、積層鉄心1のティース部に沿うコの字形状をしており、本体部2aの両側部に設けられ、ティース部の両側に装着された絶縁シートを同時に固定できる。
また、インシュレータ2の押付部2bの端部には、絶縁シート3と接する部分に薄肉部2cが設けられている。そして、積層鉄心1の軸方向の両端に設けられた一組のインシュレータ2の薄肉部2c間に、絶縁シート3の装着部3aが装着され、絶縁シート3の装着部3aを積層鉄心1に固定している。
また、インシュレータ2の本体部2aは、押付部2bが設けられた面と反対側の面の上下端に庇部を備え、この上下の庇部間に積層鉄心1の軸方向両端から突出する巻線部が納められている。
本実施の形態では、インシュレータ2の材料には、例えば、ポリブチレンテレフタレート樹脂が用いられ、インシュレータ2は射出成形により形成されている。
In this Embodiment, as shown in FIG. 4, the insulator 2 is comprised by the main-body part 2a and the pressing part 2b provided in the side which contact | connects the axial end surface of the laminated core 1 of the main-body part 2a. . And the pressing part 2b is carrying out the U-shape along the teeth part of the laminated iron core 1, is provided in the both sides of the main-body part 2a, and can fix simultaneously the insulating sheet with which both sides of the teeth part were mounted | worn.
Moreover, the thin part 2c is provided in the edge part of the pressing part 2b of the insulator 2 in the part which contact | connects the insulating sheet 3. FIG. Then, a mounting portion 3a of the insulating sheet 3 is mounted between the thin portions 2c of the pair of insulators 2 provided at both ends in the axial direction of the laminated core 1, and the mounting portion 3a of the insulating sheet 3 is fixed to the laminated core 1. is doing.
Further, the main body 2a of the insulator 2 has hooks on the upper and lower ends of the surface opposite to the surface on which the pressing part 2b is provided, and a winding projecting from both axial ends of the laminated core 1 between the upper and lower hooks. Line part is stored.
In the present embodiment, for example, polybutylene terephthalate resin is used as the material of the insulator 2, and the insulator 2 is formed by injection molding.
本実施の形態の回転電機の固定子100が、2相通電による組込着磁後も、隣接する巻線間において、優れた絶縁性を維持できる機構を説明する。
図5は、本発明の実施の形態1に係わる回転電機の固定子の、2相通電による組込着磁後の状態を示す正面断面の部分模式図である。
A mechanism that allows the stator 100 of the rotating electrical machine of the present embodiment to maintain excellent insulation between adjacent windings even after built-in magnetization by two-phase energization will be described.
FIG. 5 is a partial schematic view of a front cross section showing a state after built-in magnetization by two-phase energization of the stator of the rotating electrical machine according to the first embodiment of the present invention.
本実施の形態の回転電機の固定子100では、図5に示すように、2相通電による組込着磁により、例えば、第1の積層鉄心1aの通電相の巻線4aが、第2の積層鉄心1bの非通電相の巻線4b方向に膨らむ。しかし、隣接する巻線4aと巻線4bとの間には、4層の絶縁シート3が存在しているので、絶縁シート3の開きスペースが小さく、巻線の変形が抑制されるとともに、絶縁シート3がクッションの役目を果たして、巻線の皮膜のダメージを軽減できる。また、例え、着磁のダメージで絶縁シート3のうちの1枚が破れたとしても、残りの絶縁シート3が絶縁距離を確保することで、運転時に隣接の巻線4aと巻線4bとの間にかかる電界を緩和して、絶縁の長期信頼性を確保できる。
本実施の形態の回転電機の固定子100では、絶縁シート3の延長部3bの重なり合う長さaとインシュレータ2の隣接する巻線と対向する開口部の長さbとの比a/bが0.7〜1の範囲となっているので、隣接する通電相の巻線4aと非通電相の巻線4bとの間のほぼ全域で、絶縁シート3が4層になっており、絶縁性の保持が確実となる。
In the stator 100 of the rotating electrical machine of the present embodiment, as shown in FIG. 5, for example, the winding 4a of the energized phase of the first laminated core 1a is converted into the second The laminated core 1b swells in the direction of the non-conducting phase winding 4b. However, since there are four layers of the insulating sheet 3 between the adjacent windings 4a and 4b, the opening space of the insulating sheet 3 is small, the deformation of the winding is suppressed, and the insulating sheet 3 is insulated. The seat 3 serves as a cushion and can reduce damage to the winding film. Moreover, even if one of the insulating sheets 3 is torn due to damage due to magnetization, the remaining insulating sheet 3 secures an insulating distance, so that the adjacent winding 4a and winding 4b can be connected during operation. Long-term reliability of insulation can be secured by relaxing the electric field applied between them.
In the stator 100 of the rotating electrical machine of the present embodiment, the ratio a / b between the length a of the extension 3b of the insulating sheet 3 that overlaps the length b of the opening facing the adjacent winding of the insulator 2 is 0. .7 to 1, since the insulating sheet 3 has four layers in almost the entire area between the adjacent energized phase winding 4a and the non-energized phase winding 4b. Retention is ensured.
また、絶縁シートの軸方向における延長部3bの長さcは、積層鉄心1の軸方向両端から突出する巻線部も含めた長さd以上としているので、積層鉄心1の軸方向の全領域において、巻線4の変形を最小限に抑制するとともに、隣接する巻線4aと巻線4bとが直接触れることを防止することが出来る。
本実施の形態では、完全に分離した分割鉄心を例示したが、完全に分離していなくても、ポキポキモータのような薄肉連結構造の鉄心や、連結部で回転自在に接合された形の分割鉄心であっても同様な効果を奏する。
また、本実施の形態では、積層鉄心を用いたが、一体金属の分割鉄心であっても良い。
また、回転電機の固定子は、隣接する相の巻線間電位差はできるだけ小さい方が望ましい。そのため、本実施の形態の回転電機の固定子100では、各積層鉄心1のティース部における巻線4の巻き始め側の電位が相電位に近い側の電位となるよう結線することで、Y結線の隣り合う巻線間の電位差を最小にすることができ、長期絶縁信頼性を向上させることが出来る。
Moreover, since the length c of the extension part 3b in the axial direction of the insulating sheet is not less than the length d including the winding part protruding from both axial ends of the laminated iron core 1, the entire region of the laminated iron core 1 in the axial direction In FIG. 5, the deformation of the winding 4 can be suppressed to the minimum, and the adjacent winding 4a and winding 4b can be prevented from being touched directly.
In the present embodiment, a completely separated split iron core is illustrated, but even if it is not completely separated, a thin core connection structure such as a Poki Poki motor, or a split that is joined in a rotatable manner at the connecting portion Even an iron core has the same effect.
In the present embodiment, a laminated core is used, but a monolithic split core may be used.
Further, it is desirable that the stator of the rotating electrical machine has as small a potential difference between windings of adjacent phases as possible. Therefore, in the stator 100 of the rotating electrical machine of the present embodiment, the Y connection is established by connecting the winding start side potential of the winding 4 in the teeth portion of each laminated core 1 to a potential close to the phase potential. The potential difference between adjacent windings can be minimized, and long-term insulation reliability can be improved.
実施の形態2.
図6は、本発明の実施の形態2に係わる回転電機の固定子に用いられる絶縁シートの斜視模式図である。
図6に示すように、本実施の形態の回転電機の固定子は、用いられる絶縁シート8が、実施の形態1で用いられた絶縁シート3と同じ形状を有する第1の絶縁シート7と、この第1の絶縁シート7の装着部3aの積層鉄心1側の面に設けられた第2の絶縁シート5とで形成されていること以外、実施の形態1の回転電機の固定子と同じである。
第2の絶縁シート5は、絶縁シートの軸方向における長さが、第1の絶縁シート7の装着部3aの絶縁シートの軸方向における長さより短く、第1の絶縁シート7の装着部3aの側面と底面とに密着している。そして、第2の絶縁シート5の底面の中心を、第1の絶縁シート7の装着部3aの底面の中心に合わせて、この部分を溶着し、溶着部6を形成している。そして、この第2の絶縁シート5は、直接にティース部の積層鉄心と接触している。
Embodiment 2. FIG.
FIG. 6 is a schematic perspective view of an insulating sheet used for the stator of the rotating electrical machine according to the second embodiment of the present invention.
As shown in FIG. 6, the stator of the rotating electrical machine of the present embodiment has a first insulating sheet 7 in which the insulating sheet 8 used has the same shape as the insulating sheet 3 used in the first embodiment, The same as the stator of the rotating electrical machine of the first embodiment, except that it is formed by the second insulating sheet 5 provided on the surface of the mounting portion 3a of the first insulating sheet 7 on the laminated core 1 side. is there.
The length of the insulating sheet 5 in the axial direction of the insulating sheet is shorter than the length of the mounting portion 3a of the first insulating sheet 7 in the axial direction of the insulating sheet, and the length of the mounting portion 3a of the first insulating sheet 7 is shorter. It is in close contact with the side and bottom. The center of the bottom surface of the second insulating sheet 5 is aligned with the center of the bottom surface of the mounting portion 3 a of the first insulating sheet 7, and this portion is welded to form the welded portion 6. The second insulating sheet 5 is in direct contact with the laminated core of the tooth portion.
図7は、図5に示す実施の形態1の回転電機の固定子における、非通電相の巻線が設けられた第2の積層鉄心の、X−X断面の積層鉄心近傍を示す模式図である。
図8は、実施の形態2の回転電機の固定子における、図7と同様な第2の積層鉄心の断面の積層鉄心近傍を示す模式図である。
図7に示すように、実施の形態1の回転電機の固定子は、絶縁シート3の装着部3aが、両端のインシュレータ2の押付部2bにおける薄肉部2cで固定されている。そのため、両端にあるインシュレータ2の押付部2bの端部と絶縁シート3の装着部3aとに段差があり、この部分に非通電相の巻線4bが、通電相の巻線4aに押されて積層鉄心1側にくぼむように変形する。
しかし、図8に示すように、実施の形態2の回転電機の固定子では、インシュレータ2の押付部2bの端部と第1の絶縁シート7の装着部3aとの段差が、第2の絶縁シート5で埋められ、非通電相の巻線4bの変形が少なくなり、巻線4bの変形によるダメージがさらに抑制される。
第2の絶縁シート5の端部が、第1の絶縁シート7の装着部3aから飛び出すのを防止するために、第2の絶縁シート5の端部を第1の絶縁シート7に溶着する必要があるが、第2の絶縁シート5を、第1の絶縁シート7の積層鉄心1と接する面の反対側の面に設けても、同様な効果が得られる。
FIG. 7 is a schematic diagram showing the vicinity of the laminated core in the XX cross section of the second laminated core provided with the non-conducting phase winding in the stator of the rotating electric machine of the first embodiment shown in FIG. is there.
FIG. 8 is a schematic diagram showing the vicinity of the laminated core in the cross section of the second laminated core similar to FIG. 7 in the stator of the rotating electrical machine of the second embodiment.
As shown in FIG. 7, in the stator of the rotating electrical machine of the first embodiment, the mounting portions 3a of the insulating sheet 3 are fixed by the thin portions 2c in the pressing portions 2b of the insulators 2 at both ends. Therefore, there is a step between the end portion of the pressing portion 2b of the insulator 2 and the mounting portion 3a of the insulating sheet 3 at both ends, and the non-conducting phase winding 4b is pushed by the energizing phase winding 4a at this portion. It deforms so as to dent into the laminated iron core 1 side.
However, as shown in FIG. 8, in the stator of the rotating electrical machine of the second embodiment, the step between the end portion of the pressing portion 2b of the insulator 2 and the mounting portion 3a of the first insulating sheet 7 is the second insulation. The deformation of the non-energized phase winding 4b is reduced by being filled with the sheet 5, and damage due to the deformation of the winding 4b is further suppressed.
It is necessary to weld the end of the second insulating sheet 5 to the first insulating sheet 7 in order to prevent the end of the second insulating sheet 5 from jumping out from the mounting portion 3 a of the first insulating sheet 7. However, the same effect can be obtained even if the second insulating sheet 5 is provided on the surface of the first insulating sheet 7 opposite to the surface in contact with the laminated core 1.
また、本実施の形態では、第2の絶縁シート5の長さは、両インシュレータの押付部2b間の間隔より短くしてあるので、絶縁シート8をインシュレータの押付部2bの薄肉部2c間に納め易い。例えば、第2の絶縁シート5の端部とインシュレータの押付部2bの端部との間隔hは5〜10mm程度が好ましい。
また、本実施の形態の絶縁シート8を非通電相の巻線4bに設けるだけでなく、通電相の巻線4aに設けても良く、このようにすると、空きスペースをさらに減らすことができ、巻線の変形をさらに抑制できる。
また、第2の絶縁シート5と第1の絶縁シート7とは、その厚みが異なっても良い。例えば、第2の絶縁シート5を相対的に厚くしても良い。また、第2の絶縁シート5と第1の絶縁シート7との材質が異なっても良い。
In the present embodiment, the length of the second insulating sheet 5 is shorter than the distance between the pressing portions 2b of the two insulators, so that the insulating sheet 8 is placed between the thin portions 2c of the pressing portion 2b of the insulator. Easy to pay. For example, the distance h between the end portion of the second insulating sheet 5 and the end portion of the pressing portion 2b of the insulator is preferably about 5 to 10 mm.
In addition, the insulating sheet 8 of the present embodiment may be provided not only in the non-conducting phase winding 4b but also in the energizing phase winding 4a. In this way, the free space can be further reduced, The deformation of the winding can be further suppressed.
Further, the second insulating sheet 5 and the first insulating sheet 7 may have different thicknesses. For example, the second insulating sheet 5 may be relatively thick. The materials of the second insulating sheet 5 and the first insulating sheet 7 may be different.
実施の形態3.
図9は、本発明の実施の形態3に係わる回転電機の固定子における積層鉄心に巻線を巻回する状態を示す正面模式図である。
図9に示すように、本実施の形態の回転電機の固定子は、積層鉄心1の上下端のいずれかの領域で送るようにして、巻線4が巻回されている以外、実施の形態1または実施の形態2の回転電機の固定子と同じである。
積層鉄心1に、集中巻の巻線を施す際には、巻線4の送りが必要であり、同じ相の巻線4同士が必ずクロスする部分が生じる。
しかし、本実施の形態では、積層鉄心1の上下端のいずれかの領域で送るようにして、巻線4が巻回されているので、組込着磁の際に巻線4が変形する側面の部分を整列巻することが可能となる。
そのため、組込着磁の際、隣接する巻線同士が平行にぶつかるため、積層鉄心1の軸方向のほぼ全長に渡って力が分散し、巻線4の皮膜のダメージを軽減することが出来る。
Embodiment 3 FIG.
FIG. 9 is a schematic front view showing a state in which the winding is wound around the laminated core in the stator of the rotating electrical machine according to the third embodiment of the present invention.
As shown in FIG. 9, the stator of the rotating electrical machine of the present embodiment is the same as the embodiment except that the winding 4 is wound so as to be sent in any region of the upper and lower ends of the laminated core 1. 1 or the same as the stator of the rotating electrical machine of the second embodiment.
When concentrated winding is applied to the laminated iron core 1, the winding 4 needs to be fed, and a portion where the windings 4 of the same phase always cross each other is generated.
However, in the present embodiment, since the winding 4 is wound so as to be sent in any region of the upper and lower ends of the laminated core 1, the side surface on which the winding 4 is deformed during built-in magnetization. It becomes possible to arrange and wind the portions.
For this reason, when the built-in magnetization is performed, adjacent windings collide with each other in parallel, so that the force is distributed over almost the entire length of the laminated core 1 in the axial direction, and damage to the film of the winding 4 can be reduced. .
本発明に係わる回転電機の固定子は、組込着磁を行っても、鉄心に巻回された隣接する巻線間の絶縁性の保持が確実であり、高信頼性の回転電機に用いることができる。   The stator of the rotating electrical machine according to the present invention is used for a highly reliable rotating electrical machine that maintains insulation between adjacent windings wound around the iron core even if built-in magnetization is performed. Can do.
本発明の実施の形態1に係わる回転電機の固定子の正面断面の部分模式図である。It is a partial schematic diagram of the front cross section of the stator of the rotating electrical machine according to the first embodiment of the present invention. 本発明の実施の形態1に係わる回転電機の固定子の分割コアの側面模式図である。It is a side surface schematic diagram of the division | segmentation core of the stator of the rotary electric machine concerning Embodiment 1 of this invention. 本発明の実施の形態1に係わる回転電機の固定子に用いられる絶縁シートの斜視模式図である。It is a perspective schematic diagram of the insulating sheet used for the stator of the rotary electric machine concerning Embodiment 1 of this invention. 本発明の実施の形態1に係わる回転電機の固定子に用いられるインシュレータの斜視模式図である。It is a perspective schematic diagram of the insulator used for the stator of the rotary electric machine concerning Embodiment 1 of this invention. 本発明の実施の形態1に係わる回転電機の固定子の、2相通電による組込着磁後の状態を示す正面断面の部分模式図である。It is the partial schematic diagram of the front cross section which shows the state after the built-in magnetization by two-phase electricity supply of the stator of the rotary electric machine concerning Embodiment 1 of this invention. 本発明の実施の形態2に係わる回転電機の固定子に用いられる絶縁シートの斜視模式図である。It is a perspective schematic diagram of the insulating sheet used for the stator of the rotary electric machine concerning Embodiment 2 of this invention. 図5に示す実施の形態1の回転電機の固定子における、非通電相の巻線が設けられた第2の積層鉄心の、X−X断面の積層鉄心近傍を示す模式図である。FIG. 6 is a schematic diagram showing the vicinity of the laminated core in the XX cross section of the second laminated core provided with the non-conducting phase winding in the stator of the rotating electrical machine of the first embodiment shown in FIG. 5. 実施の形態2の回転電機の固定子における、図7と同様な第2の積層鉄心の断面の積層鉄心近傍を示す模式図である。FIG. 9 is a schematic diagram showing the vicinity of the laminated core in the cross section of the second laminated core similar to that in FIG. 7 in the stator of the rotating electrical machine of the second embodiment. 本発明の実施の形態3に係わる回転電機の固定子における積層鉄心に巻線を巻回する状態を示す正面模式図である。It is a front schematic diagram which shows the state which winds a coil | winding around the laminated iron core in the stator of the rotary electric machine concerning Embodiment 3 of this invention.
符号の説明Explanation of symbols
1 積層鉄心、1a 第1の積層鉄心、1b 第2の積層鉄心、2 インシュレータ、
2a 本体部、2b 押付部、2c 薄肉部、3 絶縁シート、3a 装着部、
3b 延長部、4 巻線、4a 通電相の巻線、4b 非通電相の巻線、
5 第2の絶縁シート、6 溶着部、7 第1の絶縁シート、8 絶縁シート、
100 回転電機の固定子。
1 laminated iron core, 1a first laminated iron core, 1b second laminated iron core, 2 insulator,
2a body part, 2b pressing part, 2c thin part, 3 insulation sheet, 3a mounting part,
3b Extension, 4 windings, 4a Energized phase winding, 4b Non-energized phase winding,
5 2nd insulating sheet, 6 welding part, 7 1st insulating sheet, 8 insulating sheet,
100 Stator of rotating electric machine.

Claims (5)

  1. 鉄心と、本体部と上記本体部に設けられ且つ上記鉄心のティース部に沿うコの字形状の押付部とで形成されたインシュレータと、上記鉄心のティース部に装着され、上記インシュレータで上記ティース部に固定された絶縁シートと、上記インシュレータで固定された上記絶縁シートが設けられた上記ティース部に巻回された巻線とで形成され、且つ複数個の上記鉄心が環状に接合された回転電機の固定子であって、
    上記絶縁シートが、上記ティース部に装着される装着部と上記装着部の両端から延長している延長部とで形成され、上記装着部が、上記鉄心の軸方向の両端に各設置された上記インシュレータの上記押付部の薄肉部間に設置され、上記延長部が、2重に重なって上記インシュレータの開口部側に露出する上記巻線を覆って設置されたことを特徴とする回転電機の固定子。
    An insulator formed by an iron core, a main body portion, and a U-shaped pressing portion that is provided on the main body portion and extends along the teeth portion of the iron core, and is mounted on the teeth portion of the iron core, and the teeth portion is formed by the insulator. A rotating electrical machine formed by an insulating sheet fixed to a coil and a winding wound around the tooth portion provided with the insulating sheet fixed by the insulator, and a plurality of the iron cores are joined in an annular shape A stator of
    The insulating sheet is formed by a mounting portion that is mounted on the tooth portion and an extending portion that extends from both ends of the mounting portion, and the mounting portions are installed at both ends in the axial direction of the iron core. The rotating electrical machine is fixed, wherein the rotating electrical machine is installed between the thin portions of the pressing portion of the insulator, and the extension portion is installed so as to cover the winding that is overlapped and exposed to the opening side of the insulator. Child.
  2. 鉄心の軸方向に平行な方向における絶縁シートの延長部の長さが上記絶縁シートの装着部の長さより長く、上記絶縁シートの延長部が上記鉄心の軸方向で上記鉄心より突出した巻線部分まで配置されていることを特徴とする請求項1に記載の回転電機の固定子。   The length of the extension portion of the insulating sheet in the direction parallel to the axial direction of the iron core is longer than the length of the mounting portion of the insulating sheet, and the extension portion of the insulating sheet protrudes from the iron core in the axial direction of the iron core The stator of the rotating electrical machine according to claim 1, wherein the stator is disposed up to.
  3. 絶縁シートが、第1の絶縁シートと、上記第1の絶縁シートの装着部の中央部に重ねられた第2の絶縁シートとで形成され、上記第2の絶縁シートの鉄心の軸方向に平行な方向における長さが上記第1の絶縁シートの鉄心の軸方向に平行な方向における長さより短いことを特徴とする請求項1または2に記載の回転電機の固定子。   The insulating sheet is formed of a first insulating sheet and a second insulating sheet stacked on the center of the mounting portion of the first insulating sheet, and is parallel to the axial direction of the iron core of the second insulating sheet. 3. The stator for a rotating electrical machine according to claim 1, wherein a length in one direction is shorter than a length in a direction parallel to the axial direction of the iron core of the first insulating sheet.
  4. 第2の絶縁シートの鉄心の軸方向に平行な方向における端部とインシュレータの押付部の端部との距離が5〜10mmであることを特徴とする請求項3に記載の回転電機の固定子。   The stator of the rotating electrical machine according to claim 3, wherein a distance between an end portion in a direction parallel to the axial direction of the iron core of the second insulating sheet and an end portion of the pressing portion of the insulator is 5 to 10 mm. .
  5. 巻線が、集中巻で形成され、鉄心の上下端のいずれかの領域で送るようにして巻回されたことを特徴とする請求項1ないし4のいずれか1項に記載の回転電機の固定子。   The fixing of the rotating electrical machine according to any one of claims 1 to 4, wherein the winding is formed by concentrated winding and is wound so as to be sent in any region of the upper and lower ends of the iron core. Child.
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