JPH03118741A - Rotor for electric machinery - Google Patents
Rotor for electric machineryInfo
- Publication number
- JPH03118741A JPH03118741A JP24900690A JP24900690A JPH03118741A JP H03118741 A JPH03118741 A JP H03118741A JP 24900690 A JP24900690 A JP 24900690A JP 24900690 A JP24900690 A JP 24900690A JP H03118741 A JPH03118741 A JP H03118741A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- pole
- annular
- ring
- rotor shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims description 22
- 238000002788 crimping Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は請求項１の上位概念に記載の電気機械、特に自
動車の三相交流発電機のだめのロータとその製法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a rotor for a three-phase alternating current generator of an electric machine, in particular a motor vehicle, according to the preamble of claim 1, and a method for producing the rotor.
［従来の技術］
電気ｌｌ！械の多部分から成る回転子をロータ軸に固定
する場合に、冷間変形により個々の回転子部分の材料を
ロータ軸の環状溝若しくは刻みを付した部分にプレスば
めするか若しくはかしめて個々の回転子部分をロータ軸
に結合する多くの実施形が公知である。[Prior art] Electricity! When securing a multi-section rotor of a machine to a rotor shaft, the material of the individual rotor sections is press-fitted or crimped into an annular groove or knurled section of the rotor shaft by cold deformation. Many embodiments are known for coupling the rotor portion of the rotor to the rotor shaft.
この場合に、軸方向に分割された回転子、例えば中央の
極芯と両側の極輪とから成る回転子の部分をクローポー
ル形ロータでと同様に、固定部分に刻みを付したロータ
軸に差しはめ、そのさい刻み部分の両端部領域をそれぞ
れロータ軸の環状溝に移行せしめる。極芯はロータ軸の
刻み付きの部分に押しはめられ、次いで適当なプレス工
具で、回転子部分の外側の端面に、それもロータ軸の環
状溝の領域のごく近くで環状ノツチが押込まれる。これ
により、押出された材料の一部が環状溝内に流入する。In this case, an axially divided rotor, for example a part of the rotor consisting of a central pole core and pole wheels on both sides, can be attached to a rotor shaft with knurling on the fixed part, as in a claw-pole rotor. The two end regions of the cut portions are inserted into the respective annular grooves of the rotor shaft. The pole cores are pressed into the knurled parts of the rotor shaft, and then, with a suitable press tool, an annular notch is pressed into the outer end face of the rotor part, very close to the area of the annular groove of the rotor shaft. . This causes a portion of the extruded material to flow into the annular groove.
この結合形式は西独国特許第３００８４５４号明細書に
も開示されているが、しかし、その場合には環状溝の形
状並びに刻みが特別に構成され、そのため、ロータ軸の
溝内へのかしめによってロータ軸の歪みが排除されない
という問題か生じる。This type of connection is also disclosed in German patent no. The problem arises that axial distortion cannot be eliminated.
その上、差しはめ過程の他に少なくとも両側でのかしめ
過程が必要であり、その場合、両極輪の材料をロータ軸
に隣合って有効にロータ軸の溝内に流入させるために特
別な工具を必要とするので、加工費用が著しく高く付く
。Moreover, in addition to the insertion process, a crimping process is required at least on both sides, in which case a special tool is required to effectively flow the material of the pole wheels into the groove of the rotor axis next to the rotor axis. Since this process is required, the processing cost becomes extremely high.
極輪のプレスばめ時に極芯の不都合なずれ動きが生じる
のが回避されず、このことはロータ結合体の軸方向の公
差に不利に影響する。When the pole wheels are press-fitted, undesirable shifting movements of the pole cores are unavoidable, which adversely affects the axial tolerances of the rotor assembly.
さらに、仏国特許第２０７３６２２号明細書によれば、
薄板パケットから成る回転子をロータ軸に押しはめ、外
側の薄板に冷間変形を帯域状に施し、かつ端面側に環状
切欠を形成することによって、回転子をロータ軸に固定
することが公知である。この場合、冷間変形並びに環状
切欠の形成は、外側の薄板の端面に圧着された環状の中
空ラムの作用下で薄板を半径方向内向きに塑性変形する
ことによって行われ、従って著しい圧迫が軸周面に生じ
るが、しかし、軸の材料の半径方向のわずかな変形は免
れない。ロータ軸の表面が滑らかであることによって、
周方向の強度は、かしめによって得られた摩擦接続によ
って規定される。Furthermore, according to French Patent No. 2073622,
It is known to fix the rotor to the rotor shaft by pressing a rotor made of thin plate packets onto the rotor shaft, cold deforming the outer thin plates in bands, and forming annular notches on the end faces. be. In this case, the cold deformation as well as the formation of the annular notch is carried out by plastic deformation of the sheet metal radially inwards under the action of an annular hollow ram which is crimped onto the end face of the outer sheet metal, so that a significant stress is exerted on the axis. However, slight radial deformations of the shaft material are inevitable. Due to the smooth surface of the rotor shaft,
The circumferential strength is defined by the frictional connection achieved by crimping.
非同期電動機のだめの短絡形ロータの軸上に最小の小型
電気機械の薄板パケットを固定する方法が公知であり、
この場合、熱可塑性物質から成るブツシュが、ロータ薄
板の端面に成形された切欠内に挿入され、超音波によっ
て変形され、これにより、ロータ軸とロータ薄板パケッ
トとが確実に結合される。この結合の強度は、使用材料
のプラスチックの強度が小さいためにわずかであり、し
かも比較的高温ではさらに削減される。A method is known for fixing the smallest compact electromechanical sheet metal packet on the shaft of the short-circuited rotor of an asynchronous motor reservoir,
In this case, a bushing made of thermoplastic material is inserted into a recess formed in the end face of the rotor sheet and is deformed by means of ultrasound, thereby ensuring a secure connection between the rotor shaft and the rotor sheet packet. The strength of this bond is small due to the low strength of the plastic material used and is further reduced at relatively high temperatures.
［発明の課題１
本発明の課題は回転子部分のかしめの原理を基本的に維
持しつつ、ロータ結合体の安全性を高め、製作費ひいて
はコストを軽減することにある。[Problem of the Invention 1 The object of the present invention is to improve the safety of the rotor assembly while basically maintaining the principle of caulking of the rotor portion, and to reduce the manufacturing cost and thus the cost.
［課題を解決するための手段］
上記課題を解決した本発明の要旨は請求項に記載の通り
である。[Means for Solving the Problems] The gist of the present invention that solves the above problems is as described in the claims.
［発明の作用・効果］
本発明によれば、回転子部分の外側のところの材料圧迫
部に極輪を設ける必要がなく、かしめ箇所が外側から内
側へ、要するに中央の回転子部分に比して極輪寄りに移
動され、両側で極芯と極輪とが、極輪のプレスはめ時に
１作業工程でかしめられる。これにより、付加的な１作
業工程、要するに特別なかしめ作業が完全に省けると共
に、溝内に行われる従来のかしめ作業に比して、プレス
はめによるかしめは著しく簡単である。[Operations and Effects of the Invention] According to the present invention, there is no need to provide a pole ring in the material compression part on the outside of the rotor portion, and the caulking portion is moved from the outside to the inside, in other words, compared to the central rotor portion. The pole core and the pole wheel on both sides are caulked in one operation process when the pole wheels are press-fitted. This completely eliminates an additional working step, in other words a special crimping operation, and crimping with a press fit is considerably simpler than conventional crimping operations carried out in grooves.
これにより、ロータ結合体は著しい安定性を得るととも
に、ロータ軸上での座りがよく、特に極輪のプレスはめ
時のずれ動きが大きいにもかかわらず変形度が少なく、
そのため、ロータの真円回転が著しく改善される。As a result, the rotor assembly has remarkable stability, sits well on the rotor axis, and has little deformation, especially despite the large displacement movement when the pole wheels are press-fitted.
Therefore, the perfect circular rotation of the rotor is significantly improved.
別の利点とするところは、極輪の両側の平らな外面がま
ったく妨げとならず、それゆえ、例えば駆動側で隔てリ
ングの面的な接触が問題なく可能となる。Another advantage is that the planar outer surfaces on both sides of the pole wheel do not interfere in any way, so that a surface contact of the separating ring, for example on the drive side, is possible without any problems.
本発明によればさらに、両方の極輪の差しほめと一緒に
かしめをおこなうことができることによって、極芯のず
れ動きが排除され、これにより、ロータ結合体の軸方向
の誤差が著しく改善される。According to the invention, furthermore, by being able to swage together with the insertion of both pole wheels, offset movements of the pole centers are eliminated, which significantly improves the axial errors of the rotor assembly. .
さらに、突合わせ範囲内でかしめ領域をそれぞれ極輪か
ら極芯へずらしたことによって、ロータ軸に作用する切
欠効果が削減される。Furthermore, by shifting the caulking regions from the pole wheels to the pole cores within the butting range, the notch effect acting on the rotor shaft is reduced.
請求項２以下に記載の構成は本発明の有利な構成である
。The configurations described in claims 2 and below are advantageous configurations of the present invention.
回転子が、中央の極芯と、これの両側でこれを取囲み、
一般には互いに向かい合って半径方向で延びる複数のク
ローポールとから成ると特に有利である。その場合、第
１の極輪と極芯と第２の極輪との相互のかしめ作用によ
って、ロータ結合体はそれ自体のみならずロータ軸にも
固定的かつ安定に保持される。その場合、両側の環状隆
起部を極芯に又はそれぞれ極芯に向けられた内側の環状
隆起部を極輪に設けることができ、これにより、かしめ
作用が生じる。さらに、極輪のプレスばめ時のかしめの
ために、付加的なリングを極輪と極芯と極輪との突合わ
せ箇所に挿入するか又は極輪にその場合それぞれ半割さ
れた極芯を一体の移行部を成しつつ取付けることができ
、その結果、内側に位置する中央のかしめ領域だけが残
されるようにすることができる。The rotor has a central pole core and surrounds it on both sides;
It is particularly advantageous if the claw poles generally extend radially opposite each other. In this case, the rotor assembly is fixedly and stably held not only on itself but also on the rotor shaft by the mutual caulking action of the first pole wheel, the pole core, and the second pole wheel. In that case, the pole wheel can be provided with an annular ridge on both sides toward the pole core or with an inner annular ridge directed toward the pole core in each case, which results in a crimping effect. Furthermore, for caulking when the pole wheels are press-fitted, an additional ring is inserted into the butt point between the pole wheels, the pole core, and the pole wheels, or the pole cores are each split in half into the pole wheels. can be attached in an integral transition, so that only the inner, central crimping area remains.
［実施例］
本発明の根本思想は、電気機械の軸方向に分割された回
転子では、回転子部分とロータ軸とのかしめ範囲を内側
にずらし、要するに突合わせ領域を、極輪−極芯−極輪
の順に軸方向に並べることのできる複数の回転子部分間
にずらしロータ軸の環状溝又は刻みへのかしめ及び材料
の圧迫を極輪のプレスばめと同時に、それも付加的なか
しめ工程を省いて行うことにある。[Example] The basic idea of the present invention is that in a rotor that is divided in the axial direction of an electric machine, the caulking range between the rotor portion and the rotor shaft is shifted inward, and in short, the butt area is changed from the pole wheel to the pole center. - staggered crimping and compression of material into annular grooves or indentations of the rotor shaft between a plurality of rotor sections that can be arranged axially in the order of the pole wheels, simultaneously with the press fit of the pole wheels, but also with additional crimping; The purpose is to omit the process.
第１図は電気機械、特に自動車の三相交流発電機のロー
タ結合体の部分を分解斜視図で示したものである。図示
のロータはクローポール形ロータとして形成されている
。FIG. 1 is an exploded perspective view of a rotor assembly of a three-phase alternating current generator for an electric machine, particularly an automobile. The illustrated rotor is designed as a claw-pole rotor.
このロータ結合体はロータ軸１１．極芯１２これの両側
に配置された極輪１３ａ、１３ｂを備え、極輪は、励磁
巻線１２ａを備えた極芯を挟持している。図示のロータ
結合体は１例であって、本発明によれば、回転子部分と
ロータ軸部分とを結合して成る種々の実施例が可能であ
る。This rotor assembly includes a rotor shaft 11. The pole core 12 has pole wheels 13a, 13b arranged on both sides thereof, the pole wheels sandwiching the pole core provided with the excitation winding 12a. The illustrated rotor assembly is one example, and according to the present invention, various embodiments in which a rotor portion and a rotor shaft portion are combined are possible.
図示の実施例では、極輪とロータ軸とのかしめ箇所が外
側から、有利には極輪の両方の外側から極輪の内側へ、
要するには極芯へ向かってずらされており、これにより
、極芯並びに各極輪を同時にかしめることができる。In the embodiment shown, the crimping point between the pole wheel and the rotor shaft is from the outside, preferably from the outside of both pole wheels to the inside of the pole wheel.
In short, it is shifted toward the pole core, which allows the pole core and each pole ring to be caulked at the same time.
この目的のために、第１図及び第２図に示す実施例では
、極芯１２はその両外面にロータ軸１１に隣接して環状
隆起部１４（図面では極輪１３ａに面した左側の環状隆
起部しか見えない）を備えている。この環状隆起部１４
は極輪の押込み又はプレスばめに続いて極輪を合い隣る
要するに互いに対抗して位置する極輪材料表面内へプレ
スばめする作業過程で第２図に示すようにプレスされ、
その結果、中央の極芯と両方の合い隣る極輪１３ａ、１
３ｂとの間の環状かしめ結合が生じるのみならず、対応
する極輪と極芯との互いに向かい合った環状領域の材料
もまたロータ軸の周りに隣合ってロータ軸領域内に押込
まれて、この領域と効果的にかしめ結合される。このこ
とのために、ロータ軸は、極芯１２と、これと向かい合
う極輪面との相互のかしめ領域内に、第２図から第５図
に示したように、少なくとも１つの有利には複数の半径
方向の環状溝を備え、この環状溝内に任意に極輪と極芯
との材料が冷間変形により流入する。To this end, in the embodiment shown in FIGS. 1 and 2, the pole core 12 has an annular ridge 14 on both its outer surfaces adjacent to the rotor shaft 11 (in the drawings an annular ridge on the left side facing the pole wheel 13a). (only the ridges are visible). This annular raised portion 14
are pressed as shown in FIG. 2 in the process of pressing or press-fitting the pole wheels into the material surfaces of the pole wheels that are adjacent to each other, that is, located opposite each other;
As a result, the center pole core and both adjacent pole wheels 13a, 1
3b, but also the material of the mutually opposite annular regions of the corresponding pole wheels and pole cores is pushed into the rotor shaft region next to each other around the rotor shaft, and this Effectively caulked to the area. For this purpose, the rotor shaft has at least one, preferably a plurality of rotor shafts, as shown in FIGS. It has a radial annular groove into which the material of the pole ring and the pole core optionally flows by cold deformation.
極輪のプレスばめ工程時に実現されるこの冷間変形作用
では、ロータ軸へ圧縮作用を加える必要がなく、たんに
両側から極輪をつかんで適当な型内で相応に高い押圧力
によって押合わせればよいため、ロータ軸は力の作用か
ら保護され又は若干の周辺の作用力にしかさらされず、
変形を免れる。This cold deformation effect, which is achieved during the press-fitting process of the pole wheel, does not require any compressive action on the rotor shaft; the pole wheel is simply grasped from both sides and pressed in an appropriate mold with a correspondingly high pressing force. The rotor shaft is protected from the action of forces or exposed only to some peripheral forces, and
Avoid deformation.
第２図、第３図、第４図に示す実施例では、周方向の環
状溝を備えたロータ軸部分１５の領域に、軸方向に延び
る刻み又はその他の有利には軸方向の歯形部を備えたロ
ータ軸部分１６が続いている。このロータ軸部分１６に
は極芯がその内側の孔によってプレスばめされており、
これにより、相互のかしめ時の確実な締付は固定によっ
てロータ軸に対して相対運動をしないように両側の極輪
を確実に固定することができる。ロータ軸部分１５の領
域内では、極芯と極輪面とが互いに密着する箇所に、３
つの材料から組み合わされた限界層形状が存在しており
、この限界層内でかしめが行われており、これに対して
従来では、外側の極輪面だけが、隣接するロータ軸環状
構造とあいまってかしめの可能性に関与しているに過ぎ
ない。In the embodiments shown in FIGS. 2, 3 and 4, the area of the rotor shaft part 15 with the circumferential annular groove is provided with axially extending indentations or other preferably axial toothings. A rotor shaft section 16 with a rotor shaft follows. A pole core is press-fitted into this rotor shaft portion 16 through a hole inside the pole core.
As a result, the pole wheels on both sides can be reliably fixed so that they do not move relative to the rotor shaft by securely tightening them when they are mutually caulked. Within the region of the rotor shaft portion 15, three
There is a limit layer shape combined from two materials, and caulking takes place within this limit layer, whereas conventionally only the outer pole ring surface interlocks with the adjacent rotor shaft annulus. It is merely involved in the possibility of caulking.
第２図に示す実施例と異なり、特に切削加工なしに両方
の極輪の内面に形成され極芯上で突出した環状隆起部１
４’ を設けることができるこの環状隆起部はプレスば
め時に同様に、対面した極芯の環状面の材料に結合され
、かみ合い、ロータ軸部分１５の領域内でロータ軸にか
しめられる。Unlike the embodiment shown in FIG. 2, an annular raised portion 1 is formed on the inner surface of both pole wheels without any cutting process and protrudes above the pole core.
This annular bulge, which can be provided with 4', is likewise connected to the material of the annular surface of the facing pole core during the press fit, engages and is crimped onto the rotor shaft in the region of the rotor shaft section 15.
本発明のさらに別の有利な構成では、極輪及び極芯の互
いに隣接する内側の突合わせ面が隆起部なしに形成され
るが、しかしロータ軸１７に隣接した環状領域内にかし
めリングが挿入される。このかしめリングは極輪のプレ
スばめ時に両側で極輪及び極芯の隣接する壁面内に埋め
込まれ、かみ合いかつ同時に極輪及び極芯の相応する材
料量を冷間変形によってロータ軸の溝内へ流入せしめ、
要するに相応して内向きに押合わされる。In a further advantageous embodiment of the invention, the mutually adjacent inner abutment surfaces of the pole wheel and the pole core are formed without protuberances, but a crimping ring is inserted in the annular region adjacent to the rotor shaft 17. be done. This caulking ring is embedded in the adjacent wall surfaces of the pole wheel and pole core on both sides during the press fit of the pole wheel, and at the same time engages and at the same time pushes corresponding amounts of material of the pole wheel and pole core into the groove of the rotor shaft by cold deformation. Let it flow into
In other words, they are pressed together inwardly accordingly.
その場合、かしめリングは一種の受動的なかしめ作用を
行う。その横断面形状は第４図の右側に示したように、
要するに符号ａ）で示すリング形、符号ｂ）で示す方形
又は菱形、符号Ｃ）で示す楕円形、符号ｄ）で示す非対
称の菱形であることができる。In that case, the crimping ring performs a kind of passive crimping action. Its cross-sectional shape is as shown on the right side of Figure 4.
In short, it can be ring-shaped, denoted by a), square or diamond-shaped, denoted by b), oval-shaped, denoted by C), or asymmetrical diamond-shaped, denoted by d).
いずれにしろ、適当な硬質材料、例えば鋼から成るかし
めリング１７はロータ軸の溝内への極輪及び極芯の材料
の押込みを生ぜしめる。In any case, a crimping ring 17 made of a suitable hard material, for example steel, causes the material of the pole wheel and pole core to be pushed into the groove of the rotor shaft.
第５図に示す実施例によれば、特別な極芯が完全に省か
れ、これを対称的に分割し、両内側で極輪に一体的に対
置することができる。これにより、部分極芯を備えたた
だ２つの極輪１８ａ、１８ｂが形成される。この場合も
、かしめ作用はこれまで説明した実施例と同様に生じる
。極芯と一体の互いに向かい合った極輪１８ａ１８ｂの
互いに隣合った面の１つに、環状隆起部１４”が設けら
れており、この環状隆起部は、互いに対向して位置する
極輪と極芯とをつかむと共に、残りの回転子部分、要す
るに両方の極輪から材料が冷間変形によってロータ軸部
分１５の領域に流入するのに役立てられる。この実施例
ではロータ軸部分１５の両側にそれぞれ１つの軸方向の
縦溝領域１６ａ、１６ｂが統くことができ、これにより
、ロータ軸上でのロータ結合体全体の回動を阻止するこ
ともできる。特別なかしめリングを挿入することもでき
る本発明は図示の実施例に制限されない。According to the embodiment shown in FIG. 5, a special pole core is completely dispensed with, which can be divided symmetrically and placed integrally opposite the pole wheels on both inner sides. This forms only two pole wheels 18a, 18b with partial pole cores. In this case as well, the caulking effect occurs in the same way as in the embodiments described above. An annular ridge 14'' is provided on one of the adjacent surfaces of the mutually opposing pole wheels 18a18b integral with the pole core, and this annular ridge is formed between the pole wheels and the pole core located opposite each other. and the material from the remaining rotor parts, that is, both pole wheels, flows by cold deformation into the region of the rotor shaft part 15. In this embodiment, one on each side of the rotor shaft part 15 is used. Two axial flute regions 16a, 16b can be integrated, which also prevent rotation of the entire rotor combination on the rotor axis.A special staking ring can also be inserted. The invention is not limited to the illustrated embodiment.
第１図は公知例のクローポール形回転子の全体斜視図、
第２図は本発明の第１実施例の部分断面図、第３図は本
発明の第２実施例の部分断面図、第４図は本発明の第３
実施例の部分断面図、第５図は本発明の第４実施例の部
分断面図である。
１１．１１’ ・・・ロータ軸、１２．１２’ 、１２
″・・・極芯、１３ａ、１３ｂ、１３ａ’ 、１３ａｎ
・・・極輪、１４．１４’ 、１４″・・・環状隆起部
、１５．１６−ｔ１７−タ軸部分、ｌｅａ、１６ｂ・・
・縦溝領域、１７・・・かしめリング、１８ａ。
１８ｂ・・・極輪FIG. 1 is an overall perspective view of a known example of a claw pole rotor.
2 is a partial cross-sectional view of the first embodiment of the present invention, FIG. 3 is a partial cross-sectional view of the second embodiment of the present invention, and FIG. 4 is a partial cross-sectional view of the second embodiment of the present invention.
FIG. 5 is a partial cross-sectional view of a fourth embodiment of the present invention. 11.11'...Rotor shaft, 12.12', 12
″...Polar core, 13a, 13b, 13a', 13an
... Polar ring, 14.14', 14''... Annular raised part, 15.16-t17-tashaft part, lea, 16b...
- Vertical groove area, 17... Caulking ring, 18a. 18b...polar ring
Claims (1)
はその他の運動するユニットの交流発電機又は三相交流
発電機のためのロータであって、ロータ軸上で溝内へ冷
間変形によりプレスばめされた回転子部分を備えている
形式のものにおいて、冷間変形領域としてのかしめ箇所
が少なくとも一方の側で回転子部分内側に位置している
ことを特徴とする電気機械のためのロータ。 ２、前記かしめ箇所が回転子部分間で、内側に位置する
環状隆起部（１４、１４’、１４”、１７）によってロ
ータ軸周面に隣合って形成されている請求項１記載のロ
ータ。 ３、回転子部分が、１つの内側の極芯（１２）と、これ
を取り囲みかつこれに隣合って位置する外側の２つの極
輪（１３ａ、１３ｂ、１３ａ’、１３ａ”）とを含んで
いる請求項１又は２記載のロータ。 ４、環状隆起部がそれぞれ、第１の外側の極輪（１３ａ
）と、内側の極芯と、これの他方の側に隣合つた極輪と
の間で、極芯の材料と一体の両側の環状突起（１４）に
よって形成されている請求項１から３までのいずれか１
項記載のロータ。 ５、環状隆起部がそれぞれ、極輪（１３ａ’、１３ｂ’
）の、内側の極芯（１２’）に面した内側の壁面に設け
た一体の材料突起（１４’）によって形成されている請
求項１から３までのいずれか１項記載のロータ。 ６、環状隆起部がそれぞれ、別体のかしめリング（１７
）によって形成されており、このかしめリングが両側で
極輪と極芯との境目領域に挿入されている請求項１から
３までのいずれか１項記載のロータ。 ７、かしめリングが円形、方形、菱形、楕円形若しくは
非円形、非対称形の横断面を有している請求項６記載の
ロータ。 ８、回転子部分がそれぞれ極輪（１８ａ、１８ｂ）から
成り、少なくとも１つの極輪に極芯領域が一体に設けら
れている請求項１又は２記載のロータ。 ９、ロータ複合体を形成する両極輪（１８ａ、１８ｂ）
が内向きにロータ軸の領域内で互いにスナップ的にそれ
ぞれ一体的に部分極芯へ移行しており、かつ、かしめ領
域の形成のためにのみ設けられた環状隆起部（１４”）
が、部分極芯の両方の互いに隣合いかつ互いに並んで位
置する環状面の一方の環状面から突起しており、又はか
しめリングから成る請求項８記載のロータ。 １０、環状隆起部の存在によって形成された、極輪−極
芯−極輪の境目のかしめ領域に、ロータ軸が少なくとも
１つの環状溝を備えており、この環状溝内に、分割され
た両回転子部分の材料が、極輪のプレスばめによって生
じたかしめ作用発生時に押込まれる請求項１から９まで
のいずれか１項記載のロータ。 １１、ロータ軸がかしめ領域内に、周方向で環状の多重
環状刻み部を備えている請求項１から１０までのいずれ
か１項記載のロータ。 １２、ロータ軸（１１、１１’）のかしめ領域の環状溝
に隣合って、軸方向で延びる溝を備えたロータ軸領域が
隣接しており、このロータ軸領域が少なくとも極芯（１
２、１２’、１２”）の内側の孔に沿って延びている請
求項１０又は１１記載のロータ。 １３、電気機械、特に自動車、二輪自動車、バス、軌道
車及びその他の運動するユニットに使用する交流発電機
又は三相交流発電機のためのロータの製法であって、冷
間変形によって回転子部分の材料をロータ軸の溝内にか
しめる形式のものにおいて、互いに隣合う回転子部分に
環状隆起部を配置し、しかる後にこれら回転子部分をロ
ータ軸にプレスばめし、それと同時に、これら回転子部
分に力を加えて互いに練合わせ、分割されている回転子
部分の隣合う材料範囲内の環状隆起部の作用によって前
記材料範囲を冷間変形により互いに内外に係合せしめ、
かつ同時に回転子軸の溝内に流入せしめることを特徴と
する電気機械のロータの製法。 １４、両側に極輪を備えた中央の極芯の形状で可動子部
分を形成するさいに、まず、極芯を回転子軸の縦溝に沿
った領域内で回転子軸上に押しはめ、しかる後に両側か
ら極輪を圧縮して、互いに突合うように突起した隆起部
を形成する一体の環状部分を極輪に形成するか又は挿入
された別々のかしめリングの間にそれぞれのかしめ領域
で冷間変形部を生ぜしめる請求項１３記載の製法。[Claims] 1. A rotor for an alternator or three-phase alternator of an electric machine, in particular a motor vehicle, a two-wheeled vehicle, a bus, a railway or other moving units, which is provided in a groove on the rotor axis. A rotor portion that is press-fitted by cold deformation is characterized in that the caulking area as a cold deformation region is located inside the rotor portion on at least one side. Rotor for electrical machines. 2. The rotor according to claim 1, wherein the caulking point is formed between the rotor parts by an annular raised part (14, 14', 14'', 17) located on the inside adjacent to the circumferential surface of the rotor shaft. 3. The rotor part includes one inner pole core (12) and two outer pole wheels (13a, 13b, 13a', 13a'') surrounding it and located adjacent to it. The rotor according to claim 1 or 2. 4, the annular ridges each form a first outer polar ring (13a
) between the inner pole core and the adjacent pole ring on the other side thereof, formed by annular projections (14) on both sides integral with the material of the pole core. any one of
Rotor described in section. 5. The annular ridges are respectively polar rings (13a', 13b'
4. A rotor according to claim 1, wherein the rotor is formed by an integral material projection (14') on the inner wall facing the inner pole core (12') of the rotor. 6. Each of the annular protrusions is a separate caulking ring (17
4. The rotor according to claim 1, wherein the caulking ring is inserted in the boundary region between the pole ring and the pole core on both sides. 7. The rotor according to claim 6, wherein the caulking ring has a circular, square, rhomboid, oval or non-circular, asymmetrical cross section. 8. A rotor according to claim 1 or 2, wherein the rotor portions each consist of a pole wheel (18a, 18b), and at least one pole wheel is integrally provided with a pole core region. 9. Bipolar rings (18a, 18b) forming the rotor complex
annular protuberances (14") that snap inwardly into the partial pole cores in a snap-like manner with respect to each other in the area of the rotor axis, and are provided solely for the purpose of forming the crimping area.
9. A rotor as claimed in claim 8, in which the ring protrudes from one of the annular surfaces of both of the partial pole cores located next to each other and in parallel with each other, or comprises a crimping ring. 10. The rotor shaft is provided with at least one annular groove in the caulking region of the polar ring-polar core-polar ring boundary formed by the presence of an annular ridge, and within this annular groove, two divided 10. A rotor as claimed in claim 1, wherein the material of the rotor part is pressed in during the caulking effect caused by the press fit of the pole wheels. 11. The rotor according to claim 1, wherein the rotor shaft is provided with multiple annular notches in the circumferential direction in the crimping region. 12. Adjacent to the annular groove of the caulking region of the rotor shaft (11, 11') is a rotor shaft region provided with a groove extending in the axial direction, and this rotor shaft region is located at least at the pole core (1
12. The rotor according to claim 10 or 11, extending along the inner bore of the rotor (2, 12', 12"). 13. Use in electrical machines, in particular in automobiles, two-wheeled vehicles, buses, railcars and other moving units. A method for manufacturing a rotor for an alternating current generator or a three-phase alternating current generator, in which the material of the rotor portion is caulked into the groove of the rotor shaft by cold deformation. After placing the annular ridges, these rotor sections are press-fitted onto the rotor shaft, and at the same time, a force is applied to the rotor sections to knead them together so that the adjacent material areas of the rotor sections that are separated are engaging said material regions internally and externally with each other by cold deformation by the action of an annular ridge;
A method for manufacturing a rotor for an electric machine, characterized in that the flow is simultaneously caused to flow into a groove of a rotor shaft. 14. When forming a movable part in the shape of a central pole core with pole wheels on both sides, first press the pole core onto the rotor shaft in a region along the longitudinal groove of the rotor shaft; The pole ring is then compressed from both sides to form an integral annular portion on the pole ring that forms protruding ridges that abut each other or between separate swage rings inserted in the respective swage areas. 14. The method according to claim 13, wherein a cold deformation zone is produced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3931442.1 | 1989-09-21 | ||
| DE19893931442 DE3931442A1 (en) | 1989-09-21 | 1989-09-21 | Rotor for electrical generator or alternator in vehicle - uses cold forming to fit armature parts to rotor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03118741A true JPH03118741A (en) | 1991-05-21 |
Family
ID=6389842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24900690A Pending JPH03118741A (en) | 1989-09-21 | 1990-09-20 | Rotor for electric machinery |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH03118741A (en) |
| DE (1) | DE3931442A1 (en) |
| FR (1) | FR2652208A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007159378A (en) * | 2005-12-09 | 2007-06-21 | Hitachi Ltd | Dynamo-electric machine or ac generator, and manufacturing method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2753581B1 (en) * | 1996-09-18 | 1998-10-16 | Valeo Equip Electr Moteur | MOTOR VEHICLE ALTERNATOR COMPRISING IMPROVED MEANS FOR IMPREGNATION OF THE REEL OF ITS ROTOR |
| DE19951476A1 (en) * | 1999-10-26 | 2001-05-03 | Wilo Gmbh | Rotor package attachment on ceramic shaft |
| DE102016117111A1 (en) | 2016-09-12 | 2018-03-15 | Thyssenkrupp Ag | Rotor for an electric machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2481018A1 (en) * | 1980-04-17 | 1981-10-23 | Ducellier & Cie | ALTERNATOR ROTOR |
| JPS58130756A (en) * | 1982-01-27 | 1983-08-04 | Hitachi Ltd | Rotor for ac generator |
| DE3330330A1 (en) * | 1983-08-23 | 1985-03-14 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | Positive-locking joint between a shaft and a machine element |
| DE3425079A1 (en) * | 1984-07-07 | 1986-01-30 | thomas technik gesellschaft für magnet- und verfahrenstechnik mbH, 5243 Herdorf | Body which is connected to a shaft |
| JPS6320139A (en) * | 1986-07-11 | 1988-01-27 | Nippon Chiyuukuukou Kk | Fixing method for metallic round bar to metallic plate, and metallic round bar used for said method |
-
1989
- 1989-09-21 DE DE19893931442 patent/DE3931442A1/en not_active Ceased
-
1990
- 1990-07-27 FR FR9009634A patent/FR2652208A1/en active Pending
- 1990-09-20 JP JP24900690A patent/JPH03118741A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007159378A (en) * | 2005-12-09 | 2007-06-21 | Hitachi Ltd | Dynamo-electric machine or ac generator, and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2652208A1 (en) | 1991-03-22 |
| DE3931442A1 (en) | 1991-04-04 |
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