JP4186759B2 - AC generator for vehicles - Google Patents

AC generator for vehicles Download PDF

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JP4186759B2
JP4186759B2 JP2003310851A JP2003310851A JP4186759B2 JP 4186759 B2 JP4186759 B2 JP 4186759B2 JP 2003310851 A JP2003310851 A JP 2003310851A JP 2003310851 A JP2003310851 A JP 2003310851A JP 4186759 B2 JP4186759 B2 JP 4186759B2
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permanent magnet
cage
claw
shaped magnetic
vehicle alternator
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JP2005080472A (en
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進 田島
慎司 山▲崎▼
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Hitachi Ltd
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Description

本発明は車両用交流発電機に関する。   The present invention relates to a vehicle alternator.

車両用交流発電機では、励磁力を上げて高出力化を図るために、ランデル形鉄心の爪形磁極間に永久磁石を配置する。永久磁石の爪形磁極間への配置方法としては従来、例えば特許文献１，２に記載されたものが知られている。特許文献１に記載されたものでは、つば状突部の内径側に設けた永久磁石係合部と爪状磁極側面部に永久磁石を接着剤で係合固着している。また、特許文献２に記載されたものでは、非磁性体のステンレス鋼からなる保護カバーを永久磁石の外周に配置している。   In an automotive alternator, a permanent magnet is disposed between claw-shaped magnetic poles of a Landell-type iron core in order to increase the excitation force and increase the output. Conventionally, for example, methods disclosed in Patent Documents 1 and 2 are known as a method for arranging permanent magnets between claw-shaped magnetic poles. In the device disclosed in Patent Document 1, a permanent magnet is engaged and fixed with an adhesive to a permanent magnet engaging portion and a claw-shaped magnetic pole side surface provided on the inner diameter side of the collar-shaped protrusion. Moreover, in what was described in patent document 2, the protective cover which consists of nonmagnetic stainless steel is arrange | positioned on the outer periphery of the permanent magnet.

特開平７−２９８５８５号公報（段落［０００７］，図１−７参照）Japanese Patent Laid-Open No. 7-298585 (see paragraph [0007], FIG. 1-7) 特開平１１−９８７８７号公報（段落［００１７］，図２参照）Japanese Patent Laid-Open No. 11-98787 (see paragraph [0017], FIG. 2)

爪形磁極間に配置される永久磁石の形状としては直方体が多い。しかも、永久磁石の長手方向と垂直な断面を考えた場合、その形状としては正方形又は対向する２辺の長さが略等しい長方形、すなわち略正方形が一般的である。このため、車両用交流発電機の製造工程において作業者が永久磁石を爪形磁極間に装着する場合、永久磁石の磁化方向を間違うことがないように作業を進めなければならない。特に爪形磁極間に装着される永久磁石が異方性を持つ場合には、略正方形の断面を有する永久磁石の磁化方向を正しく認識して作業を進めることが重要になる。   There are many rectangular parallelepiped shapes as permanent magnets arranged between the claw-shaped magnetic poles. Moreover, when a cross section perpendicular to the longitudinal direction of the permanent magnet is considered, the shape is generally a square or a rectangle having substantially the same length on two opposite sides, that is, a substantially square. For this reason, when an operator installs a permanent magnet between the claw-shaped magnetic poles in the manufacturing process of the automotive alternator, the work must be performed so that the magnetization direction of the permanent magnet is not mistaken. In particular, when the permanent magnet mounted between the claw-shaped magnetic poles has anisotropy, it is important to correctly recognize the magnetization direction of the permanent magnet having a substantially square cross section and proceed with the work.

しかしながら、特許文献１，２に記載されたものは、爪形磁極間に装着された永久磁石の遠心力による飛出し防止、すなわち永久磁石の保持については考慮しているが、永久磁石の磁化方向に関する上記課題までは考慮していない。従って、今日では、爪形磁極間に装着された永久磁石の保持と共に、永久磁石の磁化方向に関する上記課題をも考慮した車両用交流発電機の出現が望まれている。   However, in Patent Documents 1 and 2, the permanent magnet mounted between the claw-shaped magnetic poles is considered to prevent the permanent magnet from jumping out due to centrifugal force, that is, holding the permanent magnet. It does not consider the above-mentioned issues regarding. Therefore, nowadays, there is a demand for the appearance of a vehicular AC generator that takes into account the above-mentioned problem relating to the magnetization direction of the permanent magnet as well as holding the permanent magnet mounted between the claw-shaped magnetic poles.

本発明は、永久磁石の磁化方向が正しい状態で永久磁石を爪形磁極間に装着することができる車両用交流発電機を提供する。また、本発明は、生産性を向上させることができる車両用交流発電機を提供する。   The present invention provides an AC generator for a vehicle in which the permanent magnet can be mounted between the claw-shaped magnetic poles in a state where the magnetization direction of the permanent magnet is correct. The present invention also provides a vehicle AC generator that can improve productivity.

上記車両用交流発電機を得るために本発明は、永久磁石と保持器が凹凸によって係合されていることを基本的な特徴とする。また、本発明は、永久磁石及び保持器が係合部を備えていると共に、互いの係合部が係合した状態で爪形磁極間に装着されることを基本的な他の特徴とする。   In order to obtain the above-described vehicle alternator, the present invention is basically characterized in that the permanent magnet and the cage are engaged with each other by unevenness. Further, the present invention is basically characterized in that the permanent magnet and the cage are provided with the engaging portions and are mounted between the claw-shaped magnetic poles in a state where the engaging portions are engaged with each other. .

上記車両用交流発電機において、永久磁石は異方性を有する。永久磁石の長手方向と垂直な断面は略正方形である。   In the above vehicle alternator, the permanent magnet has anisotropy. The cross section perpendicular to the longitudinal direction of the permanent magnet is substantially square.

上記車両用交流発電機において、係合部は永久磁石の磁化方向の間違いを防止するために設けられたものである。係合部の一方は突部であり、その他方は、突部が係合される受部である。   In the above vehicle alternator, the engaging portion is provided to prevent an error in the magnetization direction of the permanent magnet. One of the engaging portions is a protrusion, and the other is a receiving portion to which the protrusion is engaged.

受部は永久磁石に形成されることが好ましく、永久磁石の角部を面取りして形成した面取り部で構成されている。或いは永久磁石の平面部の一部分を切削して形成した窪みで構成されている。本発明においては、面取り部及び窪みを凹と呼称する場合もある。突部は保持器に形成されることが好ましく、保持器の内側に突出するように、保持器の一部分で永久磁石の面取り部と対応する部位に設けられた突起で構成されている。或いは永久磁石の窪みに向かって突出するように、保持器の平面で永久磁石の窪みと対向する対向面の一部分に設けられた突起で構成されている。本発明においては、突起を凸と呼称する場合もある。   The receiving part is preferably formed in a permanent magnet, and is constituted by a chamfered part formed by chamfering a corner part of the permanent magnet. Or it is comprised by the hollow formed by cutting a part of plane part of a permanent magnet. In the present invention, the chamfered portion and the recess may be referred to as a recess. The protrusion is preferably formed in the cage, and is configured by a protrusion provided in a portion corresponding to the chamfered portion of the permanent magnet in a part of the cage so as to protrude inside the cage. Or it is comprised by the protrusion provided in a part of opposing surface facing the hollow of a permanent magnet in the plane of a holder | retainer so that it may protrude toward the hollow of a permanent magnet. In the present invention, the protrusion may be referred to as a convex.

上記車両用交流発電機によれば、永久磁石及び保持器が係合部を備えているので、それが作業者にとって目印となり、永久磁石の磁化方向が正しい状態で永久磁石を保持器に組み込み、永久磁石の係合部と保持器の係合部とを係合させ、永久磁石の磁化方向が正しい状態で永久磁石を保持器に包持させることができる。これにより、永久磁石の磁化方向が正しい状態で永久磁石を爪形磁極間に装着することができると共に、作業者の作業効率を向上させて車両用交流発電機の生産性を向上させることができる。また、永久磁石の磁化方向が間違った状態で永久磁石を保持器に組み込もうとしても、永久磁石及び保持器の係合部によって永久磁石が保持器に組み込めなかったり、組み込めたとしても永久磁石が不完全な状態で包持（永久磁石の一部分が保持器からはみでた状態で保持器に包持）されて爪形磁極間に装着できなかったりするので、永久磁石の磁化方向が間違った状態で永久磁石が爪形磁極間に装着されることを阻止することができる。   According to the vehicle alternator, since the permanent magnet and the cage are provided with the engaging portion, it becomes a mark for the operator, and the permanent magnet is incorporated in the cage with the magnetization direction of the permanent magnet being correct. By engaging the engaging part of the permanent magnet and the engaging part of the cage, the permanent magnet can be held in the cage in a state where the magnetization direction of the permanent magnet is correct. Accordingly, the permanent magnet can be mounted between the claw-shaped magnetic poles in a state where the magnetization direction of the permanent magnet is correct, and the work efficiency of the worker can be improved and the productivity of the AC generator for the vehicle can be improved. . In addition, even if the permanent magnet is to be assembled in the cage when the magnetization direction of the permanent magnet is wrong, even if the permanent magnet cannot be assembled in the cage due to the engaging part of the permanent magnet and the cage, Is incompletely encased (a part of the permanent magnet is encased in the cage while protruding from the cage) and cannot be mounted between the claw-shaped magnetic poles. Thus, it is possible to prevent the permanent magnet from being mounted between the claw-shaped magnetic poles.

本発明によれば、永久磁石の磁化方向が正しい状態で永久磁石を爪形磁極間に装着することができるので、信頼性の高い車両用交流発電機を提供することができる。また、本発明によれば、生産性を向上させることができるので、量産性に適した車両用交流発電機を提供することができる。   According to the present invention, since the permanent magnet can be mounted between the claw-shaped magnetic poles in a state where the magnetization direction of the permanent magnet is correct, a highly reliable AC generator for a vehicle can be provided. In addition, according to the present invention, since productivity can be improved, an automotive alternator suitable for mass production can be provided.

本発明の代表的な最良の実施形態は、異なる向きの爪形磁極が回転方向に交互に対向して配置されると共に、中心部に円筒状の界磁巻線が巻装されたランデル形鉄心と、増磁に供すると共に、前記爪形磁極間に係合配置された永久磁石とを備えた回転子を有し、前記永久磁石は保持器によって包持されており、前記永久磁石と前記保持器は凹凸により係合されている車両用交流発電機にある。   A typical best embodiment of the present invention is a Landell-type iron core in which claw-shaped magnetic poles of different orientations are alternately arranged opposite to each other in the rotation direction, and a cylindrical field winding is wound at the center. And a rotor having a permanent magnet engaged with and arranged between the claw-shaped magnetic poles, the permanent magnet being held by a cage, and the permanent magnet and the holding The vessel is in a vehicle alternator engaged by irregularities.

本発明の代表的な他の最良の実施形態は、固定子と、該固定子に空隙を介して回転可能に設けられた回転子とを有し、前記回転子は、極性が交互に異なるように回転方向に配置された複数の爪形磁極を有すると共に、巻線が巻装された鉄心と、保持器によって包持された状態で前記爪形磁極間に配置された永久磁石とを有し、前記永久磁石及び前記保持器は係合部を備えていると共に、互いの係合部が係合した状態で前記爪形磁極間に配置されている車両用交流発電機にある。   Another exemplary embodiment of the present invention includes a stator and a rotor that is rotatably provided in the stator via a gap, and the rotors have alternately different polarities. A plurality of claw-shaped magnetic poles arranged in the rotation direction, and an iron core around which the winding is wound, and a permanent magnet arranged between the claw-shaped magnetic poles while being held by a cage In addition, the permanent magnet and the cage are provided with an engagement portion, and the vehicle alternator is disposed between the claw-shaped magnetic poles with the engagement portions engaged with each other.

以下、本発明の実施例を図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.

本発明の第１実施例を図１乃至７に基づいて説明する。図７は本実施例の車両用交流発電機の全体構成を示す。車両用交流発電機は、界磁電流の供給を受けながら、自動車の内燃機関であるエンジンの回転駆動力を受けて回転子を回転させて固定子に交流電力を発生させ、発生した交流電力を整流器で整流して直流電力（自動車に搭載された電気的負荷の駆動用電力及び蓄電池の充電用電力）を得る。また、車両用交流発電機は、冷却水を機内循環させて発熱体、例えば固定子，整流器などを冷却する、いわゆる水冷方式の同期発電機であり、オルタネータ或いは車両用充電発電機と呼ばれる場合もある。冷却水は、自動車のエンジンを冷却すると共に、エンジンに付属されたラジェータによって冷却される冷却水（不凍液）の一部を分岐して用いる。   A first embodiment of the present invention will be described with reference to FIGS. FIG. 7 shows the overall configuration of the vehicle alternator of this embodiment. An AC generator for a vehicle receives a rotational current of an engine that is an internal combustion engine of an automobile while receiving supply of a field current, rotates the rotor to generate AC power in the stator, and generates the generated AC power. Rectified by a rectifier to obtain DC power (power for driving an electrical load mounted on a vehicle and power for charging a storage battery). The AC generator for vehicles is a so-called water-cooled synchronous generator in which cooling water is circulated in the machine to cool a heating element such as a stator and a rectifier, and is sometimes called an alternator or a charging generator for vehicles. is there. The cooling water cools an automobile engine and branches and uses a part of the cooling water (antifreeze) cooled by a radiator attached to the engine.

図において１は、車両用交流発電機（以下、単に「発電機」と呼ぶ）のハウジングを構成するフレームである。フレーム１は、その中心軸の一方端側が開口（開放）した器状の収納体であり、ほぼ円筒状の周壁及び周壁の中心軸の一方端側（フレーム１の中心軸の他方端側）を塞ぐ側壁から構成されている。フレーム１の周壁の内部には、フレーム１の側壁側（フレーム１の中心軸の他方端側）が開口した冷却媒体通路２が形成されている。フレーム１の周壁の外周面の一部分には、冷却媒体通路２と連通した冷却媒体供給口３及び冷却媒体排出口４が並設されている。また、フレーム１の周壁の外周面の一部分には、発電機をエンジン或いは自動車のエンジンルーム内に搭載するための取付部７が設けられている。   In the figure, reference numeral 1 denotes a frame constituting a housing of a vehicular AC generator (hereinafter simply referred to as “generator”). The frame 1 is a container-like storage body whose one end side of the central axis is opened (opened), and has a substantially cylindrical peripheral wall and one end side of the central axis of the peripheral wall (the other end side of the central axis of the frame 1). It consists of side walls that close. Formed inside the peripheral wall of the frame 1 is a cooling medium passage 2 that is open on the side wall side of the frame 1 (the other end side of the central axis of the frame 1). A cooling medium supply port 3 and a cooling medium discharge port 4 communicating with the cooling medium passage 2 are arranged in parallel on a part of the outer peripheral surface of the peripheral wall of the frame 1. A mounting portion 7 for mounting the generator in the engine room of the engine or the automobile is provided on a part of the outer peripheral surface of the peripheral wall of the frame 1.

冷却媒体通路２は、フレーム１の中心軸に沿って連続すると共に、フレーム１の周方向にわたって連続するように、環状（或いは帯状）に形成されている。冷却媒体通路２の冷却媒体供給口３との連通部分（冷却媒体通路２の上流側にあたる部分）と、冷却媒体通路２の冷却媒体排出口４との連通部分（冷却媒体通路２の下流側にあたる部分）との間は仕切りによって仕切られている。   The cooling medium passage 2 is formed in an annular shape (or a belt shape) so as to continue along the central axis of the frame 1 and to continue along the circumferential direction of the frame 1. A communicating portion between the cooling medium passage 2 and the cooling medium supply port 3 (a portion corresponding to the upstream side of the cooling medium passage 2) and a communicating portion between the cooling medium passage 2 and the cooling medium discharge port 4 (corresponding to the downstream side of the cooling medium passage 2) Are separated by a partition.

冷却媒体供給口３は自動車のエンジンの冷却系統の上流側（エンジンを冷却する前の冷却水が流れる部分）と接続されている。これにより、エンジンを冷却する冷却水の一部が分岐して発電機に供給され、冷却媒体通路２を循環して発電機を冷却する。冷却媒体排出口４は自動車のエンジンの冷却系統の下流側（エンジンを冷却し終えた冷却水が流れる部分）と接続されている。これにより、発電機を冷却し終えて発電機から排出された冷却水が、エンジンを冷却した冷却水と合流し、エンジンに付属されているラジェータ（或いは冷却器という）によって冷却される。   The cooling medium supply port 3 is connected to the upstream side of the automobile engine cooling system (the portion through which cooling water flows before cooling the engine). Thereby, a part of the cooling water for cooling the engine is branched and supplied to the generator, and circulates through the cooling medium passage 2 to cool the generator. The cooling medium discharge port 4 is connected to the downstream side of the automobile engine cooling system (the portion through which the cooling water that has cooled the engine flows). As a result, the cooling water discharged from the generator after cooling the generator merges with the cooling water that has cooled the engine, and is cooled by a radiator (or a cooler) attached to the engine.

フレーム１の中心軸の一方端側には、フレーム１の中心軸の一方端側（フレーム１の周壁の側壁側とは反対側）に形成された開口部を閉蓋するように、エンドブラケット８が固定されている。エンドブラケット８は環状の部材であり、その内周側に軸受装置１０を保持している。フレーム１の中心軸の他方端側には、フレーム１の側壁の外面に接するようにエンドブラケット９が固定されている。エンドブラケット９は環状の部材であり、フレーム１の中心軸の他方端側（フレーム１の周壁の側壁側）に形成された冷却媒体通路２の開口端を閉蓋している。   On one end side of the central axis of the frame 1, the end bracket 8 is closed so as to close an opening formed on one end side of the central axis of the frame 1 (the side opposite to the side wall side of the peripheral wall of the frame 1). Is fixed. The end bracket 8 is an annular member and holds the bearing device 10 on the inner peripheral side thereof. An end bracket 9 is fixed to the other end side of the central axis of the frame 1 so as to contact the outer surface of the side wall of the frame 1. The end bracket 9 is an annular member, and closes the opening end of the cooling medium passage 2 formed on the other end side (side wall side of the peripheral wall of the frame 1) of the central axis of the frame 1.

フレーム１の側壁の外面には、フレーム１の中心軸の他方端側（フレーム１の周壁の側壁側）に形成された冷却媒体通路２の開口端の外縁及び内縁に沿って環状の溝１１が設られている。環状の溝１１には、封止部材（或いはパッキンという）であるＯリング１２が挿入されている。Ｏリング１２は、弾性を有するゴム製の環状シール部材であり、フレーム１の側壁の外面とエンドブラケット９との間を気密に封止し、冷却媒体通路２からの漏水を防止する。   An annular groove 11 is formed on the outer surface of the side wall of the frame 1 along the outer edge and inner edge of the opening end of the cooling medium passage 2 formed on the other end side of the central axis of the frame 1 (side wall side of the peripheral wall of the frame 1). It is established. An O-ring 12 that is a sealing member (or packing) is inserted into the annular groove 11. The O-ring 12 is an elastic rubber-made annular seal member that hermetically seals between the outer surface of the side wall of the frame 1 and the end bracket 9 and prevents water leakage from the cooling medium passage 2.

フレーム１の側壁の外面とエンドブラケット９との間には、空気よりも熱伝導率の良いシリコン樹脂（或いは珪素樹脂という）が設けられている。尚、本実施例では、フレーム１の側壁の外面とエンドブラケット９との間にシリコン樹脂を設けた例について説明したが、シリコン樹脂と同様の熱伝導性を有するものであれば、シリコン樹脂以外のものを用いても構わない。   Between the outer surface of the side wall of the frame 1 and the end bracket 9, silicon resin (or silicon resin) having a thermal conductivity higher than that of air is provided. In this embodiment, the example in which the silicon resin is provided between the outer surface of the side wall of the frame 1 and the end bracket 9 has been described. However, as long as it has the same thermal conductivity as the silicon resin, other than the silicon resin You may use.

フレーム１の側壁の中央部分（フレーム１の中心軸近傍）はエンドブラケット９の内周側からエンドブラケット８側とは反対側に向かって突出している。この突出部分の先端内周側には軸受装置１１が保持されている。   The central portion of the side wall of the frame 1 (near the central axis of the frame 1) protrudes from the inner peripheral side of the end bracket 9 toward the side opposite to the end bracket 8 side. A bearing device 11 is held on the inner peripheral side of the tip of the protruding portion.

フレーム１の周壁の内周面には、固定子鉄心５及び固定子巻線６を有する固定子が固定されている。固定子鉄心５は、その中心軸が延びる方向（以下の説明においては、軸が延びる方向を単に「軸方向」という）に、円環状の薄い珪素鋼板を複数積層した積層鋼板であり、その内周部に複数のスロットが形成されている。固定子巻線６は、スター結線方式で結線されて構成された３相（ｕ相，ｖ相，ｗ相）巻線であり、各相の巻線が固定子鉄心５の対応するスロットに挿入されいる。   A stator having a stator core 5 and a stator winding 6 is fixed to the inner peripheral surface of the peripheral wall of the frame 1. The stator core 5 is a laminated steel plate in which a plurality of annular thin silicon steel plates are laminated in the direction in which the central axis extends (in the following description, the direction in which the axis extends is simply referred to as “axial direction”). A plurality of slots are formed in the peripheral portion. The stator winding 6 is a three-phase (u-phase, v-phase, w-phase) winding configured by star connection, and each phase winding is inserted into a corresponding slot of the stator core 5. It has been.

固定子鉄心５の内周側には、空隙を介して固定子鉄心５と対向する界磁鉄心１３（或いは回転子鉄心という）が回転可能に設けられている。界磁鉄心１３は、回転方向（或いは周方向）に複数の爪形磁極１４ａを有する鉄心１４と、回転方向（或いは周方向）に複数の爪形磁極１５ａを有する鉄心１５が回転軸１７の軸線が延びる方向（以下の説明においては、軸線が延びる方向を単に「軸方向」という）対向し、鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａが回転方向（或いは周方向）に交互に対向して配置されるように構成されたランデル形のものであり、回転軸１７に嵌合されている。鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａはそれぞれの鉄心の側壁部から径方向に延びて鉄心１４，１５の対向方向に直角に折れ曲がったものであり、互いに極性が異なると共に、直角に折れ曲がって軸方向に延びる向きも互いに異なる。界磁鉄心１３の中心部で鉄心１４の爪形磁極１４ａ及び鉄心１５の爪形磁極１５ａの内周面と対向する部分には、ボビンに巻かれた界磁巻線１６（或いは回転子巻線という）が設けられている。界磁巻線１６の最外周には絶縁部材３６が設けられている。   On the inner peripheral side of the stator core 5, a field core 13 (or called a rotor core) facing the stator core 5 through a gap is rotatably provided. The field iron core 13 includes an iron core 14 having a plurality of claw-shaped magnetic poles 14 a in the rotation direction (or circumferential direction) and an iron core 15 having a plurality of claw-shaped magnetic poles 15 a in the rotation direction (or circumferential direction). The claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 are alternately arranged in the rotation direction (or circumferential direction). Are arranged so as to face each other, and are fitted to the rotary shaft 17. The claw-shaped magnetic poles 14a of the iron core 14 and the claw-shaped magnetic poles 15a of the iron core 15 extend in the radial direction from the side walls of the respective iron cores and are bent at right angles to the opposing direction of the iron cores 14 and 15, and have different polarities. The directions of bending at right angles and extending in the axial direction are also different from each other. A field winding 16 (or a rotor winding) wound around a bobbin is provided at a central portion of the field core 13 that faces the inner peripheral surfaces of the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15. Called). An insulating member 36 is provided on the outermost periphery of the field winding 16.

回転軸１７はフレーム１の中心軸に沿って両方向に延びている。回転軸１７の一方端側は軸受装置１０よって軸支されていると共に、軸受装置１０よりも外側に延びている。回転軸１７の一方端側の先端部にはプーリ１８（或いはベルト円板という）が取り付けられている。プーリ１８は、駆動力伝達手段であるチェーン或いはベルトを介して自動車のエンジンのクランク軸に設けられたプーリと機械的に連結されており、エンジンの回転駆動力が伝達される。   The rotating shaft 17 extends in both directions along the central axis of the frame 1. One end side of the rotating shaft 17 is supported by the bearing device 10 and extends outward from the bearing device 10. A pulley 18 (or a belt disk) is attached to the tip of one end side of the rotating shaft 17. The pulley 18 is mechanically connected to a pulley provided on a crankshaft of an automobile engine via a chain or belt which is a driving force transmission means, and transmits the rotational driving force of the engine.

回転軸１７の他方端側の先端部は軸受装置１１によって軸支されている。回転軸１７の他方端側で軸受装置１１よりも内側の部分にはスリップリング１９(或いは集電環という)が取り付けられている。スリップリング１９は導電性の環状部材であり、界磁巻線１６に電気的に接続されている。スリップリング１９にはブラシ２０が摺動接触している。ブラシ２０は、界磁巻線１６に供給される電力（界磁電流）をスリップリングに供給するものであり、エンドブラケット９のエンドブラケット８側とは反対側の面に固定されたブラシホルダ２１によって保持されている。ブラシホルダ２１内には、弾性体であるバネ２２が設けられている。バネ２２はブラシ２０がスリップリング１９に摺動接触するようにブラシ２０を押圧している。   The tip of the other end side of the rotating shaft 17 is pivotally supported by the bearing device 11. A slip ring 19 (or a current collecting ring) is attached to a portion inside the bearing device 11 on the other end side of the rotating shaft 17. The slip ring 19 is a conductive annular member and is electrically connected to the field winding 16. A brush 20 is in sliding contact with the slip ring 19. The brush 20 supplies electric power (field current) supplied to the field winding 16 to the slip ring, and the brush holder 21 is fixed to the surface of the end bracket 9 opposite to the end bracket 8 side. Is held by. A spring 22 that is an elastic body is provided in the brush holder 21. The spring 22 presses the brush 20 so that the brush 20 is in sliding contact with the slip ring 19.

エンドブラケット９のエンドブラケット８側とは反対側の面には整流器２５及びＩＣレギュレータ２６（或いは電圧調整器という）が設けられている。整流器２５は、固定子巻線６の出力である３相交流を全波整流して直流の出力を得る半導体装置であり、６個のダイオードでブリッジ回路を構成している。ＩＣレギュレータ２６は、ブラシ２０を介して界磁巻線１６に供給される界磁電流を制御して、固定子巻線６から出力される３相交流を調整する半導体装置である。エンドブラケット９のエンドブラケット８側とは反対側（整流器２５，ＩＣレギュレータ２６及びブラシホルダ２１が固定された側）はカバー２７によって覆われている。カバー２７からは端子２８が外部に露出している。端子２８は整流器２５に電気的に接続されている。端子２７には、整流器２５によって整流された直流の出力を外部、すなわち車両側（バッテリや電気的負荷など）に供給するために、車両側配線の端子（図示省略）が電気的に接続されている。   A rectifier 25 and an IC regulator 26 (or voltage regulator) are provided on the surface of the end bracket 9 opposite to the end bracket 8 side. The rectifier 25 is a semiconductor device that obtains a direct current output by full-wave rectifying the three-phase alternating current that is the output of the stator winding 6, and constitutes a bridge circuit with six diodes. The IC regulator 26 is a semiconductor device that adjusts the three-phase alternating current output from the stator winding 6 by controlling the field current supplied to the field winding 16 via the brush 20. The side of the end bracket 9 opposite to the end bracket 8 side (the side on which the rectifier 25, the IC regulator 26, and the brush holder 21 are fixed) is covered with a cover 27. A terminal 28 is exposed to the outside from the cover 27. Terminal 28 is electrically connected to rectifier 25. The terminal 27 is electrically connected to a vehicle wiring terminal (not shown) in order to supply the DC output rectified by the rectifier 25 to the outside, that is, the vehicle side (battery, electrical load, etc.). Yes.

整流器２５は、負極側冷却板を兼ねるエンドブラケット９，絶縁部材２９，正極側冷却板３０及び端子台３１の順に積層された積層体で構成されている。エンドブラケット９は板状部材であり、フレーム１及びエンドブラケット８と同様にアルミニウム製のものである。エンドブラケット９の冷却媒体通路２との対向部位よりも径方向内側（冷却媒体通路２との非対向部位）には、円弧形状に配列された３つの貫通孔３３が形成されている。貫通孔３３のそれぞれには、負極側整流素子である整流ダイオード３２のカソード側（負極側）が圧入によって埋設されている。貫通孔３３のフレーム１側の開口部（開放部）はフレーム１の側壁によって閉蓋されている。   The rectifier 25 is configured by a laminated body in which an end bracket 9 that also serves as a negative-side cooling plate, an insulating member 29, a positive-side cooling plate 30, and a terminal block 31 are laminated in this order. The end bracket 9 is a plate-like member and is made of aluminum like the frame 1 and the end bracket 8. Three through holes 33 arranged in an arc shape are formed on the radially inner side of the end bracket 9 facing the cooling medium passage 2 (the portion not facing the cooling medium passage 2). In each of the through holes 33, the cathode side (negative electrode side) of the rectifier diode 32 that is a negative electrode side rectifying element is embedded by press-fitting. The opening (opening portion) on the frame 1 side of the through hole 33 is closed by the side wall of the frame 1.

正極側冷却板３０は円弧形状（或いは馬蹄形状）の冷却フィンであり、エンドブラケット９と同様にアルミニウム製の部材から形成されたものである。正極側冷却板３０は、その内径がエンドブラケット９の貫通孔３３よりも径方向外側の部分に位置するように、絶縁部材２９を介してエンドブラケット９のエンドブラケット８側とは反対側の面に固定されている。正極側冷却板３０には、円弧形状に配列された３つの貫通孔３５が形成されている。貫通孔３５のそれぞれには、正極側整流素子である整流ダイオード３４のアノード側（正極側）が圧入によって埋設されている。これにより、整流ダイオード３４は、整流ダイオード３２よりも半径方向外側で、冷却媒体通路２に近い位置、とりわけ本実施例では、エンドブラケット９の冷却媒体通路２と対向する部位上に配置される。貫通孔３５のエンドブラケット９側の開口部（開放部）は絶縁部材２９を介してエンドブラケット９によって閉蓋されている。   The positive-side cooling plate 30 is an arc-shaped (or horseshoe-shaped) cooling fin, and is formed of an aluminum member in the same manner as the end bracket 9. The positive-side cooling plate 30 has a surface opposite to the end bracket 8 side of the end bracket 9 via the insulating member 29 so that the inner diameter thereof is located at a portion radially outside the through hole 33 of the end bracket 9. It is fixed to. Three through holes 35 arranged in an arc shape are formed in the positive-side cooling plate 30. In each of the through holes 35, the anode side (positive electrode side) of the rectifier diode 34 that is a positive electrode side rectifying element is embedded by press-fitting. Thereby, the rectifier diode 34 is disposed radially outside the rectifier diode 32 and close to the coolant passage 2, particularly in the present embodiment, on a portion facing the coolant passage 2 of the end bracket 9. An opening (opening portion) on the end bracket 9 side of the through hole 35 is closed by the end bracket 9 via an insulating member 29.

絶縁部材２９は、正極側冷却板３０の形状に沿って円弧形状（或いは馬蹄形状）に形成されたシート状の部材であり、その面積が正極側冷却板３０よりも若干大きい。絶縁部材２９のエンドブラケット９との対向面及び正極側冷却板３０との対向面にはペースト状のシリコンパウンドが塗布されている。本実施例では、絶縁部材２９の両面にシリコンコンパウンドを塗布することにより、絶縁部材２９の熱伝導性を向上させている。端子台３１は、整流ダイオード３２，３４をブリッジ接続する金具を絶縁性の樹脂によって一体成形した接続部材であり、正極側冷却板３０の形状に沿って円弧形状（或いは馬蹄形状）に形成された板状の部材である。端子台３１の金具には整流ダイオード３２のアノード側（正極側）と整流ダイオード３４のカソード側（負極側）が溶接或いは半田付けによって電気的，機械的に接続されている。また、端子台３１の金具には、固定子巻線６の各相の巻線に接続された端子が加締められていると共に、溶接或いは半田付けによって電気的，機械的に接続されている。   The insulating member 29 is a sheet-like member formed in an arc shape (or horseshoe shape) along the shape of the positive electrode side cooling plate 30, and the area thereof is slightly larger than that of the positive electrode side cooling plate 30. Paste-like silicon compound is applied to the surface of the insulating member 29 facing the end bracket 9 and the surface facing the positive-side cooling plate 30. In the present embodiment, the thermal conductivity of the insulating member 29 is improved by applying silicon compound on both surfaces of the insulating member 29. The terminal block 31 is a connecting member obtained by integrally molding a metal fitting for bridging the rectifying diodes 32 and 34 with an insulating resin, and is formed in an arc shape (or a horseshoe shape) along the shape of the positive-side cooling plate 30. It is a plate-shaped member. The metal fitting of the terminal block 31 is electrically and mechanically connected to the anode side (positive electrode side) of the rectifier diode 32 and the cathode side (negative electrode side) of the rectifier diode 34 by welding or soldering. In addition, terminals connected to the respective phase windings of the stator winding 6 are crimped to the metal fittings of the terminal block 31 and are electrically and mechanically connected by welding or soldering.

次に、本実施例の発電機の構成、特に回転子の構成を図１乃至３に基づいてさらに詳細に説明する。図１は、永久磁石が保持器によって包持された状態を示す。図２は、永久磁石を保持器に組み込む状態を示す。図３は、永久磁石が保持器によって包持された状態で爪形磁極間に挿入される状態及び永久磁石が保持器によって包持された状態で爪形磁極間に装着された状態を示す。本実施例の発電機では、発電機の出力を増加させるために永久磁石２３を備えている。永久磁石２３は保持器２４によって包持されていると共に、保持器２４に包持された状態で鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間のそれぞれに装着されている。これにより、永久磁石２３は爪形磁極間に係合配置されて回転子の増磁に供される。   Next, the configuration of the generator of this embodiment, particularly the configuration of the rotor, will be described in more detail with reference to FIGS. FIG. 1 shows a state in which a permanent magnet is held by a cage. FIG. 2 shows a state in which the permanent magnet is assembled in the cage. FIG. 3 shows a state where the permanent magnet is inserted between the claw-shaped magnetic poles while being held by the cage, and a state where the permanent magnet is held between the claw-shaped magnetic poles while being held by the cage. The generator according to this embodiment includes a permanent magnet 23 in order to increase the output of the generator. The permanent magnet 23 is held by the cage 24 and is mounted between the claw-shaped magnetic pole 14 a of the iron core 14 and the claw-shaped magnetic pole 15 a of the iron core 15 while being held by the cage 24. . As a result, the permanent magnet 23 is engaged and disposed between the claw-shaped magnetic poles and used for magnetizing the rotor.

永久磁石２３は、コバルト，ネオジウム，ボロンなどの希土類系の材料から形成された磁性体であって、長手方向に垂直な面（長手方向側の側面）が略正方形をした直方体の構造体であり、異方性（外部から磁場がかかっていない時の磁化方向（磁化容易方向）が外部からの磁場などによりずれる性質）を有するものである。永久磁石２３の短手方向の幅ｔ１は、鉄心１４の爪形磁極１４ａの周方向先端と鉄心１５の爪形磁極１５ａの周方向先端との間のうち、互いに平行な部位における周方向先端間の幅ｔ４と略同一である。永久磁石２３の４つ角のうち１つの角（長手方向側の側面の一方と短手方向側の側面の一方とによって形成される直角な角）には、上面側から下面側に向かって垂直に面取りされた面取り部２３ａ（或いは凹部という）が形成されている。面取り部２３ａは永久磁石２３側の係合部（或いは受部という）を構成するものである。尚、永久磁石２３に設けられた面取り部２３ａの位置は、異方性を有する永久磁石２３が鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着されて磁場がかかった場合、永久磁石２３による増磁という目的を充分に果たすことできる永久磁石２３の磁化方向が考慮されたものとなっている。 The permanent magnet 23 is a magnetic body made of a rare earth-based material such as cobalt, neodymium, or boron, and is a rectangular parallelepiped structure whose surface perpendicular to the longitudinal direction (side surface on the longitudinal direction side) is substantially square. And anisotropy (the property that the magnetization direction (easy magnetization direction) when no magnetic field is applied from the outside is shifted by an external magnetic field). The width t 1 in the short direction of the permanent magnet 23 is the circumferential tip at a portion parallel to each other between the circumferential tip of the claw-shaped magnetic pole 14 a of the iron core 14 and the circumferential tip of the claw-shaped magnetic pole 15 a of the iron core 15. it is substantially the same as the width t 4 between. One of the four corners of the permanent magnet 23 (a right angle formed by one of the side surfaces on the long side and the side surface on the short side) is perpendicular from the upper surface side to the lower surface side. A chamfered portion 23a (or a concave portion) is formed. The chamfered portion 23a constitutes an engaging portion (or a receiving portion) on the permanent magnet 23 side. The position of the chamfered portion 23a provided in the permanent magnet 23 is such that an anisotropic permanent magnet 23 is mounted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 so that a magnetic field is applied. In this case, the magnetization direction of the permanent magnet 23 that can sufficiently achieve the purpose of magnetizing by the permanent magnet 23 is taken into consideration.

保持器２４は、バネ鋼，ステンレスなどの金属材料でかつ非磁性材料から形成された部材であって、包部２４ａ（或いは覆部という），固定部２４ｂ，舌片２４ｃ，凸部２４ｅ及び突起２４ｆが一体形成された構造体である。このように、保持器２４は非磁性体から形成されているので、鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間における永久磁石２３の磁束の漏洩を抑制することができる。包部２４ａは、永久磁石２３の短手方向側の側面が外部に露出する状態で永久磁石２３の上面及び長手方向側の側面を包囲する或いは覆うものであり、逆凹形状の部材である。すなわち包部２４ａは、上面及び上面の長手方向側に設けられた側面から構成されたものである。包部２４ａの長手方向の幅は永久磁石２３の長手方向の幅と略同一である。包部２４ａの短手方向の幅ｔ２は永久磁石２３の短手方向の幅ｔ１、及び鉄心１４の爪形磁極１４ａの周方向先端と鉄心１５の爪形磁極１５ａの周方向先端との間のうち、互いに平行な部位における周方向先端間の幅ｔ４と略同一である。 The cage 24 is a member made of a metal material such as spring steel or stainless steel and made of a nonmagnetic material, and includes a packet part 24a (or a cover part), a fixing part 24b, a tongue piece 24c, a convex part 24e, and a protrusion. Reference numeral 24f denotes an integrally formed structure. Thus, since the cage 24 is formed of a nonmagnetic material, leakage of the magnetic flux of the permanent magnet 23 between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 can be suppressed. . The envelope part 24a surrounds or covers the upper surface and the longitudinal side surface of the permanent magnet 23 in a state where the lateral side surface of the permanent magnet 23 is exposed to the outside, and is a reverse concave member. That is, the packet part 24a is composed of an upper surface and a side surface provided on the longitudinal direction side of the upper surface. The width in the longitudinal direction of the packet part 24 a is substantially the same as the width in the longitudinal direction of the permanent magnet 23. The width t 2 in the short direction of the hull 24 a is the width t 1 in the short direction of the permanent magnet 23 and the circumferential tip of the claw-shaped magnetic pole 14 a of the iron core 14 and the circumferential tip of the claw-shaped magnetic pole 15 a of the iron core 15. of between, it is substantially the same as the width t 4 between the circumferential tip in parallel to the site together.

固定部２４ｂは、包部２４ａによって包囲された永久磁石２３の下面を上側に押し付けて永久磁石２３を包部２４ａ内に固定・保持させる弾性部材であり、包部２４ａの上面に対向するように設けられている。固定部２４ｂの一端は、包部２４ａの長手方向一方の側面の下端部に、そこから直角に内側に折れ曲がるように設けられた平面部で構成されている。固定部２４ｂの平面部の中央部からは、包部２４ａの長手方向他方の側面側に向かって固定部２４ｂの板ばね部が延びている。固定部２４ｂの板ばね部は細長い波板状のものである。固定部２４ｂの板ばね部の平面部側とは反対側（包部２４ａの長手方向他方の側面側）の端部は上方に折れ曲がり、その先端部が、包部２４ａの長手方向他方の側面に設けられた孔２４ｄに掛止されるように構成されている。   The fixing portion 24b is an elastic member that presses the lower surface of the permanent magnet 23 surrounded by the wrapping portion 24a upward to fix and hold the permanent magnet 23 in the wrapping portion 24a, and faces the upper surface of the wrapping portion 24a. Is provided. One end of the fixing portion 24b is formed by a flat portion provided at the lower end portion of one side surface in the longitudinal direction of the packet portion 24a so as to be bent inward at a right angle therefrom. A leaf spring portion of the fixing portion 24b extends from the central portion of the flat portion of the fixing portion 24b toward the other side surface in the longitudinal direction of the packet portion 24a. The leaf spring portion of the fixed portion 24b is a long and thin corrugated plate. The end of the fixing portion 24b opposite to the flat portion side of the leaf spring portion (the other side surface in the longitudinal direction of the wrapping portion 24a) is bent upward, and its tip portion is on the other side surface in the longitudinal direction of the wrapping portion 24a. It is configured to be hooked in the provided hole 24d.

舌片２４ｃは、永久磁石２３を保持器２４に組み込んだ状態でこれを鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着した場合、絶縁部材３６との間でバネ作用によって変形して、鉄心１４の爪形磁極１４ａの周方向先端の鍔部１４ｂの内面と鉄心１５の爪形磁極１５ａの周方向先端の鍔部１５ｂの内面に保持器２４を密着させる弾性部材であり、固定部２４ｂの板ばね部の短手方向両側に並設されている。舌片２４ｃの一端は固定部２４ｂの平面部と兼用する構成になっている。固定部２４ｂの平面部の両端部からは、包部２４ａの長手方向他方の側面側に向かって舌片２４ｃの板ばね部が延びている。舌片２４ｃの板ばね部は細長く、下方側（包部２４ａ側とは反対側）に突出した湾曲状のものである。舌片２４ｃの板ばね部の平面部側とは反対側（包部２４ａの長手方向他方の側面側）の端部は自由端になっている。   When the tongue piece 24c is mounted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 in a state where the permanent magnet 23 is incorporated in the cage 24, the tongue piece 24c is a spring between the insulating member 36. An elastic member that is deformed by the action to bring the cage 24 into close contact with the inner surface of the flange 14b at the circumferential tip of the claw-shaped magnetic pole 14a of the iron core 14 and the inner surface of the flange 15b at the circumferential tip of the claw-shaped magnetic pole 15a of the iron core 15. It is arranged in parallel on both sides in the short direction of the leaf spring part of the fixed part 24b. One end of the tongue piece 24c is configured to also serve as a flat portion of the fixed portion 24b. A leaf spring portion of the tongue piece 24c extends from both end portions of the flat portion of the fixing portion 24b toward the other side surface in the longitudinal direction of the packet portion 24a. The leaf spring part of the tongue piece 24c is elongated and has a curved shape protruding downward (on the opposite side to the packet part 24a side). An end of the tongue piece 24c on the side opposite to the flat portion side of the leaf spring portion (the other side surface in the longitudinal direction of the packet portion 24a) is a free end.

尚、鍔部１４ｂ，１５ｂは、回転子が回転した場合に生じる遠心力で爪形磁極間から保持器２４が径方向に飛び出すのを防止するために設けられたものであり、それぞれ爪形磁極の周方向先端の外周部が爪形磁極の周方向端面よりも、隣接する爪形磁極側に突出した突起である。   The flange portions 14b and 15b are provided to prevent the cage 24 from protruding in the radial direction from between the claw-shaped magnetic poles due to the centrifugal force generated when the rotor rotates. The outer peripheral portion of the tip in the circumferential direction is a protrusion protruding toward the adjacent claw-shaped magnetic pole side from the circumferential end surface of the claw-shaped magnetic pole.

また、絶縁部材３６は、舌片２４ｃが界磁巻線１６に直接触れることを防止するために設けられたものである。但し、保持器２４が絶縁部材で、保持器２４を爪形磁極間に軸方向から挿入する場合に界磁巻線１６の絶縁皮膜を傷つけ、絶縁不良を起こさないような材料、例えばプラスティックやゴムなどで構成されている場合には、絶縁部材３６を省略することができる。   The insulating member 36 is provided to prevent the tongue piece 24 c from directly touching the field winding 16. However, when the cage 24 is an insulating member, and the cage 24 is inserted between the claw-shaped magnetic poles from the axial direction, a material that does not damage the insulation film of the field winding 16 and causes a poor insulation, such as plastic or rubber. Etc., the insulating member 36 can be omitted.

さらに、絶縁部材３６は、舌片２４ｃと界磁巻線１６との絶縁を保つという機能のみを考えた場合、単なる絶縁体であればその目的を満足することができる。しかし、界磁巻線１６を構成する電線同士，界磁巻線１６とボビンとの間及びボビンと鉄心１４，１５との間の接着及び絶縁を考えて、接着剤を前述の各部品の間に浸透させる必要がある場合には何らかの工夫が必要である。特に液体状の接着剤を回転子の製造工程においてその外周部から滴下により塗布しようとすると、爪形磁極間における保持器２４と永久磁石２３との存在により、界磁巻線１６の軸方向中心部に接着剤が塗布し難い。そこで、絶縁部材３６を、例えば綿製のテープのように、液体状の接着剤を浸透させることができるような材料で構成し、界磁巻線１６の径方向最外周に巻きつけておけば、製造工程において回転子の外周部から塗布した接着剤は、絶縁部材３６の軸方向端部に付着した接着剤が軸方向にも浸透し、最終的に回転子の軸方向中心部まで浸透、更には界磁巻線１６の層間にも浸透することになる。これにより、信頼性が高く、かつ爪形磁極間に永久磁石を持たない回転子と同じ工程で製造することが可能になる。   Furthermore, when considering only the function of maintaining the insulation between the tongue piece 24c and the field winding 16, the insulating member 36 can satisfy its purpose if it is a simple insulator. However, considering the bonding and insulation between the electric wires constituting the field winding 16, between the field winding 16 and the bobbin, and between the bobbin and the iron cores 14, 15, an adhesive is used between the aforementioned components. When it is necessary to infiltrate, some ingenuity is necessary. In particular, when a liquid adhesive is applied by dropping from the outer periphery of the rotor in the manufacturing process of the rotor, the axial center of the field winding 16 is caused by the presence of the cage 24 and the permanent magnet 23 between the claw-shaped magnetic poles. It is difficult to apply the adhesive to the part. Therefore, if the insulating member 36 is made of a material that can infiltrate liquid adhesive, such as cotton tape, for example, it is wound around the outermost radial direction of the field winding 16. The adhesive applied from the outer periphery of the rotor in the manufacturing process penetrates the axial direction end of the insulating member 36, and finally penetrates to the axial center of the rotor. Further, it penetrates between the layers of the field winding 16. This makes it possible to manufacture in the same process as a rotor having high reliability and having no permanent magnet between the claw-shaped magnetic poles.

包部２４ａの長手方向他方の側面の下端部には、下方側に突出するように凸部２４ｅが設けられている。凸部２４ｅは、永久磁石２３を保持器２４に組み込んでこれを鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に挿入する場合、界磁巻線１６が巻装されたボビンの軸方向端部の壁部に接触させ、回転子における永久磁石２３の軸方向位置を設定するために設けられている。これにより、回転子の軸方向の磁気中心位置を決定することができると共に、ボビンに巻装された界磁巻線１６の端末線を固定するための突起に巻きつけられた界磁巻線端部と保持器２４（導体）との絶縁を保つための空間を、確実に保つことができる。   A convex portion 24e is provided at the lower end of the other side surface in the longitudinal direction of the packet portion 24a so as to protrude downward. The convex portion 24e has the field winding 16 wound when the permanent magnet 23 is incorporated in the cage 24 and is inserted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15. It is provided in order to set the axial position of the permanent magnet 23 in the rotor in contact with the wall at the axial end of the bobbin. Thus, the magnetic center position in the axial direction of the rotor can be determined, and the field winding end wound around the protrusion for fixing the terminal wire of the field winding 16 wound around the bobbin. A space for maintaining insulation between the portion and the cage 24 (conductor) can be reliably maintained.

包部２４ａの長手方向一方の側面で保持器２４の短手方向一方の１辺側の中央部（保持器２４に永久磁石２３が組み込まれた場合、永久磁石２３の面取り部２３ａと対応する部分）には突起２４ｆが設けられている。突起２４ｆは保持器２４の内側（包部２４ａの長手方向一方の側面で保持器２４の短手方向他方の１辺側）に向かって突出し、保持器２４側の係合部である突部（或いは凸部という）を構成するものである。本実施例では、保持器２４の係合部（突起２４ｆ）と、前述した永久磁石２３の係合部（面取り部２３ａ）とが係合するように、永久磁石２３を保持器２４に組み込むことにより、永久磁石２３の磁化方向の間違いを防止している。   The central portion of one side in the short direction of the cage 24 on one side in the longitudinal direction of the packet portion 24a (the portion corresponding to the chamfered portion 23a of the permanent magnet 23 when the permanent magnet 23 is incorporated in the cage 24) ) Is provided with a protrusion 24f. The protrusion 24f protrudes toward the inner side of the cage 24 (one side surface in the longitudinal direction of the packet portion 24a on the other side in the lateral direction of the cage 24), and is a projection (an engagement portion on the cage 24 side). Or a convex portion). In this embodiment, the permanent magnet 23 is incorporated in the cage 24 so that the engaging portion (projection 24f) of the cage 24 and the engaging portion (chamfered portion 23a) of the permanent magnet 23 are engaged. Thus, an error in the magnetization direction of the permanent magnet 23 is prevented.

永久磁石２３の面取り部２３ａと保持器２４の突起２４ｆは作業者にとって、永久磁石２３の磁化方向の間違いを防止するための目印となる。作業者は、永久磁石２３の面取り部２３ａと保持器２４の突起２４ｆとを係合するように永久磁石２３を保持器２４に組み込むことにより、永久磁石２３の磁化方向が正しい状態で永久磁石２３を保持器２４に組み込むことができる。これにより、図１に示すように、永久磁石２３の対角線の短手方向成分の長さが永久磁石２３の短手方向の幅ｔ１と同一になると共に、保持器２４の短手方向の幅ｔ２と略同一になり、永久磁石２３を保持器２４によって完全に包囲することができる。そして、永久磁石２３を包持した保持器２４の短手方向の幅は鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間の幅ｔ４とも略同一になるので、作業者は、永久磁石２３を包持した保持器２４を永久磁石２３の磁化方向が正しい状態で鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に挿入することができる。従って、永久磁石２３の磁化方向が正しい状態で永久磁石２３を鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着することができる。これにより、永久磁石２３の目的である回転子の増磁を充分に達成することができるので、信頼性の高い発電機を提供することができる。 The chamfered portion 23a of the permanent magnet 23 and the protrusion 24f of the retainer 24 serve as markers for preventing an error in the magnetization direction of the permanent magnet 23 for the operator. The operator installs the permanent magnet 23 in the cage 24 so that the chamfered portion 23a of the permanent magnet 23 and the protrusion 24f of the cage 24 are engaged, so that the permanent magnet 23 is in the correct magnetization direction. Can be incorporated into the cage 24. Thereby, as shown in FIG. 1, the length of the diagonal direction component of the permanent magnet 23 is the same as the width t 1 of the permanent magnet 23 in the short direction, and the width of the cage 24 in the short direction. It becomes substantially the same as t 2, and the permanent magnet 23 can be completely surrounded by the cage 24. Since the width in the short direction of the cage 24 holding the permanent magnet 23 is substantially the same as the width t 4 between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15, The cage 24 holding the permanent magnet 23 can be inserted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 in a state where the magnetization direction of the permanent magnet 23 is correct. Therefore, the permanent magnet 23 can be mounted between the claw-shaped magnetic pole 14 a of the iron core 14 and the claw-shaped magnetic pole 15 a of the iron core 15 in a state where the magnetization direction of the permanent magnet 23 is correct. As a result, the rotor can be sufficiently magnetized, which is the purpose of the permanent magnet 23, and a highly reliable generator can be provided.

また、本実施例では、永久磁石２３の面取り部２３ａと保持器２４の突起２４ｆとを用いてた永久磁石２３の保持器２４への組み込み作業により、作業者が永久磁石２３の磁化方向を簡単に識別できると共に、永久磁石２３の磁化方向の間違いを減少させることができるので、作業者の作業効率を向上させて発電機の生産性を向上させることができる。これにより、量産性に適した発電機を提供することができる。   Further, in this embodiment, the operator can easily change the magnetization direction of the permanent magnet 23 by assembling the permanent magnet 23 into the cage 24 using the chamfered portion 23a of the permanent magnet 23 and the protrusion 24f of the cage 24. In addition, since it is possible to reduce errors in the magnetization direction of the permanent magnet 23, it is possible to improve the work efficiency of the operator and improve the productivity of the generator. Thereby, the generator suitable for mass productivity can be provided.

さらに、本実施例では、永久磁石２３の磁化方向が間違った状態、すなわち図４，図５に示すように、永久磁石２３の面取り部２３ａと保持器２４の突起２４ｆが係合されない状態で永久磁石２３を保持器２４に組み込んだ場合、永久磁石２３の長手方向一端側（保持器２４の突起２４ｆ側）が突起２４ｆによって保持器２４の短手方向一端（保持器２４の突起２４ｆ側とは反対側）から側方にはみだしてし、永久磁石２３が保持器２４に不完全な状態で包持される。これにより、永久磁石２３の対角線の短手方向成分の長さが、図４に示すようにｔ３となり、保持器２４の短手方向の幅ｔ２及び鉄心１４の爪形磁極14ａと鉄心１５の爪形磁極１５ａとの間の幅ｔ４よりも大きくなる。この結果、永久磁石２３を不完全な状態で包持した保持器２４を鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に挿入しようとしても挿入することができない。従って、本実施例では、永久磁石２３の磁化方向が間違った状態で永久磁石２３が鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着されることを阻止することができる。 Further, in the present embodiment, the permanent magnet 23 is permanently magnetized in a state where the magnetization direction is wrong, that is, as shown in FIGS. 4 and 5, the chamfered portion 23a of the permanent magnet 23 and the protrusion 24f of the cage 24 are not engaged. When the magnet 23 is incorporated in the cage 24, one end in the longitudinal direction of the permanent magnet 23 (the projection 24f side of the cage 24) is one end in the short direction of the cage 24 (on the projection 24f side of the cage 24) by the projection 24f. The permanent magnet 23 is held in an incomplete state in the cage 24, protruding from the opposite side) to the side. As a result, the length of the diagonal component of the permanent magnet 23 in the short direction is t 3 as shown in FIG. 4, the width t 2 of the cage 24 in the short direction, the claw-shaped magnetic pole 14 a of the iron core 14, and the iron core 15. It is larger than the width t 4 between the claw poles 15a of the. As a result, the holder 24 holding the permanent magnet 23 in an incomplete state cannot be inserted even if it is inserted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15. Therefore, in this embodiment, it is possible to prevent the permanent magnet 23 from being mounted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 when the magnetization direction of the permanent magnet 23 is wrong. it can.

さらに、本実施例では、永久磁石２３を保持器２４に組み込んだ状態でこれを鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着した場合、絶縁部材３６との間で舌片２４ｃがバネ作用によって変形して、鉄心１４の爪形磁極１４ａの周方向先端の鍔部１４ｂの内面と鉄心１５の爪形磁極１５ａの周方向先端の鍔部１５ｂの内面に保持器２４を密着させることができる。これにより、永久磁石２３を鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に確実に固定することができ、回転子に対する永久磁石２３の径方向位置を安定させることができる。従って、大量に回転子を生産した場合でも、性能の安定した発電機を生産することができる。   Further, in this embodiment, when the permanent magnet 23 is incorporated in the cage 24 and is mounted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15, it is between the insulating member 36. The tongue 24c is deformed by the spring action, and the cage is placed on the inner surface of the flange 14b at the circumferential tip of the claw-shaped magnetic pole 14a of the iron core 14 and the inner surface of the flange 15b at the circumferential tip of the claw-shaped magnetic pole 15a of the iron core 15. 24 can be adhered. Thereby, the permanent magnet 23 can be reliably fixed between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15, and the radial position of the permanent magnet 23 relative to the rotor can be stabilized. . Therefore, even when a large number of rotors are produced, a generator with stable performance can be produced.

さらに、本実施例では、保持器２４を非磁性体で構成されているので、鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間における永久磁石２３の磁束の漏洩を抑制することができる。   Furthermore, in this embodiment, the cage 24 is made of a non-magnetic material, so that leakage of the magnetic flux of the permanent magnet 23 between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 is suppressed. be able to.

さらに、本実施例では、保持器２４の長手方向他方に凸部２６を設けているので、永久磁石２３を保持器２４に組み込んだ状態でこれを鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に挿入した場合、界磁巻線１６が巻装されたボビンの軸方向端部の壁部に接触させることができる。これにより、回転子における永久磁石２３の軸方向位置を設定することができる。   Furthermore, in the present embodiment, since the convex portion 26 is provided on the other longitudinal direction of the cage 24, the permanent magnet 23 is incorporated in the cage 24, and this is claw-shaped magnetic pole 14 a of the iron core 14 and the claws of the iron core 15. When it is inserted between the magnetic poles 15a, it can be brought into contact with the wall portion of the axial end of the bobbin around which the field winding 16 is wound. Thereby, the axial direction position of the permanent magnet 23 in the rotor can be set.

本発明の第２実施例を図８乃至１０に基づいて説明する。図８は、永久磁石が保持器によって包持された状態を示す。図９は、永久磁石を保持器に組み込む状態を示す。図１０は、永久磁石が保持器によって包持された状態で爪形磁極間に装着された状態を示す。本実施例は前例の変形例であって、前例とは永久磁石２３及び保持器２４に設けられる係合部の構成が異なっている。この他の構成は前例と同様であるので、前例と同符号を付してその説明を省略する。   A second embodiment of the present invention will be described with reference to FIGS. FIG. 8 shows a state where the permanent magnet is held by the cage. FIG. 9 shows a state in which the permanent magnet is incorporated in the cage. FIG. 10 shows a state in which the permanent magnet is mounted between the claw-shaped magnetic poles while being held by the cage. This embodiment is a modification of the previous example, and the configuration of the engaging portions provided in the permanent magnet 23 and the cage 24 is different from the previous example. Since the other configuration is the same as that of the previous example, the same reference numerals as those of the previous example are given and the description thereof is omitted.

永久磁石２３の上面（平面）の中央部には、短手方向に連続する窪み２３ｂ（或いは凹部という）が形成されている。保持器２４の包部２４ａの上面（平面であって、永久磁石２３の上面と対向する面）の中央部（保持器２４に永久磁石２３が組み込まれた場合、永久磁石２３の窪み２３ｂと対応する部分）には、短手方向に連続する窪みを設けて保持器２４の内側に突出させた突起２４ｇが形成されている。窪み２３ｂと突起２４ｇは、永久磁石２３の磁化方向が正しい状態で永久磁石２３が保持器２４に組み込まれた場合、係合される。   In the center of the upper surface (plane) of the permanent magnet 23, a recess 23b (or a recess) that is continuous in the lateral direction is formed. When the permanent magnet 23 is incorporated in the retainer 24, it corresponds to the recess 23 b of the permanent magnet 23, when the permanent magnet 23 is incorporated in the retainer 24. The projection 24g is formed on the inner portion of the cage 24 by providing a recess continuous in the lateral direction. The recess 23b and the protrusion 24g are engaged when the permanent magnet 23 is incorporated in the cage 24 in a state where the magnetization direction of the permanent magnet 23 is correct.

窪み２３ｂと突起２４ｇは作業者にとって、永久磁石２３の磁化方向の間違いを防止するための目印となる。従って、作業者は、永久磁石２３の窪み２３ｂと保持器２４の突起２４ｇとを係合するように永久磁石２３を保持器２４に組み込むことにより、前例と同様に、永久磁石２３の磁化方向が正しい状態で永久磁石２３を保持器２４に組み込むことができると共に、永久磁石２３の磁化方向が正しい状態で永久磁石２３を鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着することができる。よって、本実施例も前例と同様に、永久磁石２３の目的である回転子の増磁を充分に達成することができるので、信頼性の高い発電機を提供することができる。   The depression 23b and the protrusion 24g serve as a mark for preventing an error in the magnetization direction of the permanent magnet 23 for the operator. Therefore, the operator incorporates the permanent magnet 23 into the retainer 24 so that the recess 23b of the permanent magnet 23 and the protrusion 24g of the retainer 24 are engaged, so that the magnetization direction of the permanent magnet 23 is the same as the previous example. The permanent magnet 23 can be incorporated in the cage 24 in the correct state, and the permanent magnet 23 is placed between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 with the magnetization direction of the permanent magnet 23 being correct. Can be installed. Therefore, as in the previous example, since this embodiment can sufficiently achieve the rotor magnetization, which is the purpose of the permanent magnet 23, a highly reliable generator can be provided.

また、本実施例では、永久磁石２３の磁化方向が間違った状態、すなわち永久磁石２３の窪み２３ｂと保持器２４の突起２４ｇが係合されない状態で永久磁石２３を保持器２４に組み込もうとしても、組み込むことができない。従って、本実施例では、永久磁石２３の磁化方向が間違った状態で永久磁石２３が鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に装着されることを阻止することができる。また、仮に保持器２４を変形させた状態で永久磁石２３を包持させた場合でも、その厚みが厚くなるので、永久磁石２３を包持した保持器２４を鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に挿入しようとしても挿入することができない。   Further, in the present embodiment, the permanent magnet 23 is to be assembled into the cage 24 in a state where the magnetization direction of the permanent magnet 23 is wrong, that is, in a state where the recess 23b of the permanent magnet 23 and the protrusion 24g of the cage 24 are not engaged. Can not be incorporated. Therefore, in this embodiment, it is possible to prevent the permanent magnet 23 from being mounted between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15 when the magnetization direction of the permanent magnet 23 is wrong. it can. Further, even when the permanent magnet 23 is held in a state where the cage 24 is deformed, the thickness is increased. Therefore, the cage 24 holding the permanent magnet 23 is connected to the claw-shaped magnetic pole 14a of the iron core 14 and the iron core. Even if it is inserted between 15 claw-shaped magnetic poles 15a, it cannot be inserted.

また、本実施例では、回転子の製造工程において、回転子の外径に滴下する液状の接着剤を、保持器２４の突起２４ｇを形成させるために窪ました部分から、永久磁石２３と鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間に浸透させ、永久磁石２３及び保持器２４を鉄心１４の爪形磁極１４ａと鉄心１５の爪形磁極１５ａとの間にさらに強固に固定することができる。   Further, in this embodiment, in the manufacturing process of the rotor, the liquid adhesive dripped onto the outer diameter of the rotor is removed from the recessed portion to form the protrusion 24g of the cage 24, and the permanent magnet 23 and the iron core. 14 is inserted between the claw-shaped magnetic pole 14a of the iron core 15 and the permanent magnet 23 and the cage 24 are further strengthened between the claw-shaped magnetic pole 14a of the iron core 14 and the claw-shaped magnetic pole 15a of the iron core 15. Can be fixed to.

本発明の第１実施例である車両用交流発電機の回転子の爪形磁極間に装着される永久磁石が保持器によって包持された状態を示す斜視図。The perspective view which shows the state by which the permanent magnet with which it mounts between the nail | claw-shaped magnetic poles of the rotor of the alternating current generator for vehicles which is 1st Example of this invention was wrapped with the holder | retainer. 図１の永久磁石が保持器に組み込まれる状態を示す分解斜視図。The disassembled perspective view which shows the state in which the permanent magnet of FIG. 1 is integrated in a holder | retainer. 図１の永久磁石が保持器によって包持された状態で回転子の爪形磁極間に装着された状態を示す平面図。The top view which shows the state with which the permanent magnet of FIG. 1 was mounted | worn between the nail | claw-shaped magnetic poles of the rotor in the state hold | maintained by the holder | retainer. 第１実施例の比較例であって、永久磁石が保持器によって不完全に包持された状態を示す斜視図。It is a comparative example of 1st Example, Comprising: The perspective view which shows the state in which the permanent magnet was incompletely held by the holder | retainer. 図４の永久磁石が保持器に組み込まれる状態を示す分解斜視図。The disassembled perspective view which shows the state in which the permanent magnet of FIG. 4 is integrated in a holder | retainer. 図４の永久磁石が保持器によって不完全に包持された状態で回転子の爪形磁極間に挿入されようとする状態を示す平面図。The top view which shows the state which is going to insert between the nail | claw-shaped magnetic poles of a rotor in the state in which the permanent magnet of FIG. 本発明の第１実施例である車両用交流発電機の全体構成を示す断面図。BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing which shows the whole structure of the alternating current generator for vehicles which is 1st Example of this invention. 本発明の第２実施例である車両用交流発電機の回転子の爪形磁極間に装着される永久磁石が保持器によって包持された状態を示す斜視図。The perspective view which shows the state by which the permanent magnet with which it mounts between the nail | claw-shaped magnetic poles of the rotor of the alternating current generator for vehicles which is 2nd Example of this invention was wrapped with the holder | retainer. 図８の永久磁石が保持器に組み込まれる状態を示す分解斜視図。The disassembled perspective view which shows the state in which the permanent magnet of FIG. 8 is integrated in a holder | retainer. 本発明の第２実施例である車両用交流発電機の回転子の構成を示す部分断面図。The fragmentary sectional view which shows the structure of the rotor of the alternating current generator for vehicles which is 2nd Example of this invention.

符号の説明Explanation of symbols

５…固定子鉄心、６…固定子巻線、１３…界磁鉄心、１４,１５…鉄心、１４ａ,１５ａ…爪形磁極、１６…界磁巻線、２３…永久磁石、２３ａ…面取り部、２３ｂ…窪み、２４…保持器、２４ｆ，２４ｇ…突起。

5 ... Stator core, 6 ... Stator winding, 13 ... Field iron core, 14, 15 ... Iron core, 14a, 15a ... Claw-shaped magnetic pole, 16 ... Field winding, 23 ... Permanent magnet, 23a ... Chamfered part, 23b ... depression, 24 ... cage, 24f, 24g ... projection.

Claims (9)

固定子と、
前記固定子に空隙を介して回転可能に設けられ、極性が交互に異なるように回転方向に配置された複数の爪形磁極を有する回転子と、
前記爪形磁極間に保持器によって包持された状態で装着された永久磁石とを有し、
前記永久磁石及び前記保持器は、それぞれ係合部を備えており、互いの前記係合部が係合した状態で前記爪形磁極間に装着され、
前記保持器は、前記爪形磁極の周方向先端に設けられた鍔部の内面に該保持器を押し付けて密着させる舌片を有することを特徴とする車両用交流発電機。 A stator,
A rotor having a stator rotatably arranged via a gap, a plurality of polarity are arranged in the rotational direction so as alternately different claw poles,
A permanent magnet mounted in a state of being held by a cage between the claw-shaped magnetic poles ,
The permanent magnet and the cage each have an engaging portion, and are mounted between the claw-shaped magnetic poles with the engaging portions engaged with each other ,
2. The vehicle alternator according to claim 1, wherein the retainer has a tongue piece that presses the retainer against an inner surface of a collar provided at a circumferential tip of the claw-shaped magnetic pole . 請求項１に記載の車両用交流発電機において、
前記係合部は、前記永久磁石の磁化方向の間違いを防止するために設けられたものであることを特徴とする車両用交流発電機。 In the vehicle alternator according to claim 1 ,
The vehicle alternator according to claim 1, wherein the engaging portion is provided to prevent an error in the magnetization direction of the permanent magnet. 請求項１に記載の車両用交流発電機において、
前記係合部の一方は突部、その他方は、前記突部が係合される受部であることを特徴とする車両用交流発電機。 In the vehicle alternator according to claim 1 ,
One of the engaging portions is a projecting portion, and the other is a receiving portion with which the projecting portion is engaged. 請求項３に記載の車両用交流発電機において、
前記突部と前記受部が係合した場合、前記永久磁石は前記保持器によって包持されることを特徴とする車両用交流発電機。 In the vehicle alternator according to claim 3 ,
When the protrusion and the receiving portion are engaged, the permanent magnet is held by the retainer. 請求項３に記載の車両用交流発電機において、
前記突部は前記保持器に、前記受部は前記永久磁石にそれぞれ形成されていることを特徴とする車両用交流発電機。 In the vehicle alternator according to claim 3 ,
The vehicle alternator according to claim 1, wherein the protrusion is formed on the cage, and the receiving portion is formed on the permanent magnet. 請求項５に記載の車両用交流発電機において、
前記受部は、前記永久磁石の角部に設けられた面取り部であり、
前記突部は、前記保持器の内側に向かって突出するように、前記保持器の前記面取り部と対応する部位に設けられた突起であることを特徴とする車両用交流発電機。 In the vehicle AC generator according to claim 5 ,
The receiving portion is a chamfered portion provided at a corner of the permanent magnet,
The vehicle alternator according to claim 1, wherein the protrusion is a protrusion provided at a portion corresponding to the chamfered portion of the cage so as to protrude toward the inside of the cage. 請求項５に記載の車両用交流発電機において、
前記受部は、前記永久磁石の平面部に設けられた窪みであり、
前記突部は、前記窪みに向かって突出するように、前記保持器の平面で前記窪みと対向する対向面の一部分に設けられた突起であることを特徴とする車両用交流発電機。 In the vehicle AC generator according to claim 5 ,
The receiving part is a recess provided in a flat part of the permanent magnet,
The vehicle alternator according to claim 1, wherein the protrusion is a protrusion provided on a part of a facing surface facing the depression on the plane of the cage so as to protrude toward the depression. 請求項１に記載の車両用交流発電機において、
前記永久磁石は異方性を有することを特徴とする車両用交流発電機。 In the vehicle alternator according to claim 1,
The AC generator for vehicles, wherein the permanent magnet has anisotropy. 請求項１に記載の車両用交流発電機において、
前記永久磁石は、その長手方向と垂直な断面が略正方形であることを特徴とする車両用交流発電機。 In the vehicle alternator according to claim 1,
An AC generator for vehicles, wherein the permanent magnet has a substantially square cross section perpendicular to its longitudinal direction.
JP2003310851A 2003-09-03 2003-09-03 AC generator for vehicles Expired - Fee Related JP4186759B2 (en)

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JP2009183042A (en) 2008-01-30 2009-08-13 Denso Corp Alternator for vehicles
DE102008043144B4 (en) * 2008-10-24 2017-08-17 Robert Bosch Gmbh Device for fixing magnets
JP4697292B2 (en) * 2008-12-05 2011-06-08 株式会社デンソー Rotating electrical machine rotor
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JP3740353B2 (en) * 2000-07-17 2006-02-01 株式会社東芝 Permanent magnet type reluctance type rotating electrical machine
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