JPS5939812Y2 - Rotating electric machine core - Google Patents

Description

【考案の詳細な説明】 本案は、鉄心歯相互の内周側を、容易に磁気飽和する連
結部で連結し、外周に開口するスロットをもった歯部鉄
心をそなえ、この鉄心のスロットに外周開口部からコイ
ルを挿入するようにした回転電機の鉄心に関する。[Detailed description of the invention] The present invention connects the inner circumferential sides of the core teeth with a connecting part that is easily magnetically saturated, and has a toothed core with a slot that opens on the outer circumference. This invention relates to an iron core for a rotating electric machine in which a coil is inserted through an opening.

従来、この種の回転電機鉄心は第５図に示すように、相
互に連結された鉄心歯１の連結部２を内側にして積層し
、外側に開口するスロット３に外周からコイル４を挿入
して歯部鉄心を構成し、この歯部鉄心の外周に別個の継
鉄鉄心１２を嵌合させるか、巻きつげるようにしである
。Conventionally, as shown in FIG. 5, this type of rotating electric machine core has been constructed by stacking mutually connected core teeth 1 with their connecting portions 2 on the inside, and inserting a coil 4 from the outer periphery into a slot 3 opening to the outside. A separate yoke core 12 is fitted or wound around the outer periphery of the toothed core.

このため鉄心が小形の場合でもコイルの挿入が容易であ
る反面、継鉄鉄心１２の嵌着に手数を要しスロット内に
挿入されたコイル導体がスロットからはみ出し継鉄鉄心
の嵌着時に傷つけられたり継鉄鉄心と各鉄心歯端面との
接触状態が均一になりにくいため各種の磁気抵抗にムラ
を生じるなどの欠点があった。For this reason, even if the core is small, it is easy to insert the coil, but it takes time to fit the yoke core 12, and the coil conductor inserted into the slot may protrude from the slot and be damaged when the yoke core is inserted. However, since it is difficult to achieve uniform contact between the yoke core and the tooth end surfaces of each core, there are drawbacks such as uneven magnetic resistance.

本案は、このような点にかんがみ、各鉄心歯の端面に共
通の継鉄鉄心を嵌合させることをなくし、鉄心歯の延長
部と、この延長部間にコイルを押える楔として磁性片を
設け、延長部と磁性片で継鉄を構成させるようにしたも
ので、第１図に示す実施例において、１は鉄心歯で、内
側に鉄心歯相互を連結する連結部２をそなえ、外側に開
口するスロット３を形成しである。In view of these points, this proposal eliminates the need to fit a common yoke core to the end face of each core tooth, and instead provides an extension of the core tooth and a magnetic piece between this extension as a wedge to hold the coil. , a yoke is constituted by an extension part and a magnetic piece. In the embodiment shown in FIG. A slot 3 is formed therein.

この鉄心歯１の外側端には、コイル４を収納するために
必要な高さより長くした鳩尾状の延長部５をそなえてお
り、スロットに鉄心外周からコイル４を挿入したのちに
、前記延長部５の側縁に接触し、かつコイル４を押える
ように磁性片６を挿入し、この磁性片６により延長部５
相互を磁気的に連結させである。The outer end of the core tooth 1 is provided with a dovetail-shaped extension 5 that is longer than the height required to accommodate the coil 4. After the coil 4 is inserted into the slot from the outer periphery of the core, the extension is inserted into the slot. A magnetic piece 6 is inserted so as to contact the side edge of the coil 4 and press the coil 4.
They are magnetically connected to each other.

しかして延長部５および磁性片６の厚さｔは、スロット
数をｎ、極数をｐとした場合、 となるようにしである。Therefore, the thickness t of the extension portion 5 and the magnetic piece 6 is set as follows, where n is the number of slots and p is the number of poles.

なお、上記実施例では、延長部５を鳩尾状にしであるが
、これに限られず、たとえば第２図に示すように延長部
５０対向側縁に凹溝を設け、磁性片６に、この凹溝と嵌
合する突条７を設けて嵌合連結するようにしてもよく、
また、第３図のように磁性片外面に冷却突条８を一体に
設けることもできる。In the above embodiment, the extension part 5 has a dovetail shape, but the invention is not limited to this. For example, as shown in FIG. It is also possible to provide a protrusion 7 that fits into the groove for a fitting connection.
Further, as shown in FIG. 3, cooling protrusions 8 can be integrally provided on the outer surface of the magnetic piece.

磁性片６は所要形状の磁性小片の積層体または一体の棒
状磁性体で形成され、要すればコイルと接触する面に絶
縁塗料をコーティングして挿入を容易にするとともにコ
イル絶縁を増大させるようにしである。The magnetic piece 6 is formed of a laminate of magnetic pieces of a desired shape or an integrated rod-shaped magnetic body, and if necessary, the surface that contacts the coil is coated with an insulating paint to facilitate insertion and increase coil insulation. It is.

このように、本案は内側に連結部２をもった鉄心歯１と
、外側に開口するスロット３とをそなえた鉄心において
、前記鉄心歯１に延長部５を設はスロット３にコイル４
を挿入したのちに、鉄心歯１の延長部相互間に十分な磁
気容量をもった磁性片６を外側方向に脱落しないように
嵌合固着させ、この磁性片によってコイルを押える楔と
しての作用とともに、鉄心歯の延長部と磁気的に連結し
て継鉄鉄心を構成するようにしであるので、別個に継鉄
鉄心を設ける必要がなく、必要な厚さをもった磁性片６
を、スロットに楔を挿入する場合と同様な作業で鉄心歯
の延長部間に挿入すればよく、従来の環状の継鉄鉄心の
ように各歯部鉄心外周面に同時に嵌合させる必要がない
から、コイルの損傷や各歯との嵌合面の不揃いによる磁
気抵抗の不均等を生じることがなく、各磁性片ごとに延
長部との連結が確実に行なわれ、別個に磁性片の固着を
する必要がないとともに、磁気的結合が良好な状態に保
持され、構造ならびに製作が簡単で効率のよい回転電機
を得られる効果がある。As described above, the present invention is an iron core that has a core tooth 1 having a connecting portion 2 on the inside and a slot 3 that opens to the outside.
After inserting the coil, a magnetic piece 6 having sufficient magnetic capacity is fitted and fixed between the extensions of the core teeth 1 so as not to fall off in the outward direction, and this magnetic piece acts as a wedge to hold down the coil. Since the yoke core is configured by magnetically connecting with the extension part of the core teeth, there is no need to provide a separate yoke core, and the magnetic piece 6 with the necessary thickness can be used.
can be inserted between the extensions of the core teeth in the same way as inserting a wedge into a slot, and there is no need to fit each tooth to the outer circumferential surface of the core at the same time as in conventional annular yoke cores. Therefore, there is no damage to the coil or uneven magnetic resistance due to uneven mating surfaces with each tooth, and each magnetic piece is reliably connected to the extension, and each magnetic piece can be fixed separately. There is no need to do so, magnetic coupling is maintained in a good state, and it is possible to obtain an efficient rotating electric machine with a simple structure and manufacture.

なお、本案の鉄心は、別個に継鉄を設けないため、適当
個所の磁性片６に鉄心の径方向に突出する支持板９を設
けこの支持板９を取付脚あるいは、ベース１０の取りつ
げ用として使用することができ、また磁性片６を軸方向
に延長させ、エンドカバー１１を取りつげるようにして
もよい。In addition, since the iron core of the present invention does not have a separate yoke, a support plate 9 that protrudes in the radial direction of the iron core is provided on the magnetic piece 6 at an appropriate location, and this support plate 9 is used as a mounting leg or for attaching the base 10. Alternatively, the magnetic piece 6 may be extended in the axial direction and the end cover 11 may be attached.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本案の実施例を示す上半部の断面図、第２図、
第３図は他の実施例を示す一部拡大図、第４図は本案鉄
心を用いた回転電機の例を示す側面図で一部を断面で示
しである。 第５図は従来の構成を示す上半部断面図である。 １は鉄心歯、２は連結部、３はスロット、４はコイル、
５は延長部、６は磁性片、７は突起、８は冷却突条、９
は支持板、１０はベース、１１はエンドカバー １２は
継鉄鉄心である。Fig. 1 is a sectional view of the upper half showing an embodiment of the present invention;
FIG. 3 is a partially enlarged view showing another embodiment, and FIG. 4 is a side view showing an example of a rotating electrical machine using the proposed iron core, with a portion shown in cross section. FIG. 5 is a sectional view of the upper half of the conventional configuration. 1 is the iron core tooth, 2 is the connecting part, 3 is the slot, 4 is the coil,
5 is an extension part, 6 is a magnetic piece, 7 is a protrusion, 8 is a cooling protrusion, 9
10 is a support plate, 10 is a base, 11 is an end cover, and 12 is a yoke core.

Claims (1)

【実用新案登録請求の範囲】 ｌ 鉄心歯１とこの鉄心歯の内周側を連結し磁気的に容
易に飽和する連結部２を有する歯部鉄心をそなえ、この
鉄心歯相互間に歯部鉄心の外周側からコイルを挿入する
ようにした鉄心において、前記鉄心歯１の外側端部にそ
れぞれ延長部５をそなえ、この延長部の側面に嵌合保持
されコイル４の外側面を押さえる楔作用の磁性片６を設
け、この磁性片６が前記延長部５とともに継鉄鉄心を構
成することを特徴とする回転電機鉄心。 ２ 前記延長部５が外周端に向って拡がる鳩尾状である
実用新案登録請求の範囲第１項記載の回転電機鉄心。 ３ 前記延長部５が両側面に磁性片両側の突起と嵌合す
る凹溝をそなえている実用新案登録請求の範囲第１項記
載の回転電機鉄心。 ４ 前記磁性片６が外側面に冷却突条８を設けた実用新
案登録請求の範囲第１項記載の回転電機鉄心。 ５ 前記磁性片６が軸方向に延長するエンドカバー取付
腕を一体に設けた実用新案登録請求の範囲第１項記載の
回転電機鉄心。[Scope of Claim for Utility Model Registration] l A toothed core having a connecting part 2 that connects the core tooth 1 and the inner peripheral side of the core tooth and is easily magnetically saturated, and a toothed core between the core teeth. In an iron core in which a coil is inserted from the outer circumferential side, an extension part 5 is provided at each outer end of the core teeth 1, and a wedge-acting part is fitted and held on the side surface of this extension part and presses the outer surface of the coil 4. A rotating electric machine core characterized in that a magnetic piece 6 is provided, and the magnetic piece 6 constitutes a yoke iron core together with the extension part 5. 2. The rotating electric machine core according to claim 1, wherein the extension portion 5 has a dovetail shape that expands toward the outer peripheral end. 3. The rotating electric machine iron core according to claim 1, wherein the extension portion 5 has grooves on both side surfaces that engage with protrusions on both sides of the magnetic piece. 4. The rotating electrical machine core according to claim 1, wherein the magnetic piece 6 has cooling protrusions 8 on its outer surface. 5. The rotating electric machine core according to claim 1, wherein the magnetic piece 6 is integrally provided with an end cover mounting arm extending in the axial direction.