JP2003111325A - Rotor of magneto-generator and manufacturing method therefor - Google Patents
Rotor of magneto-generator and manufacturing method thereforInfo
- Publication number
- JP2003111325A JP2003111325A JP2001297497A JP2001297497A JP2003111325A JP 2003111325 A JP2003111325 A JP 2003111325A JP 2001297497 A JP2001297497 A JP 2001297497A JP 2001297497 A JP2001297497 A JP 2001297497A JP 2003111325 A JP2003111325 A JP 2003111325A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- protection cover
- rotor
- yoke
- yoke portion
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 30
- 238000005452 bending Methods 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 16
- 125000006850 spacer group Chemical group 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 5
- 238000004080 punching Methods 0.000 description 2
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動二輪車、バギ
ー車、雪上車等のエンジンに装着され、搭載バッテリの
充電や電気機器への電力供給に使用される磁石式発電機
のロータとその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of a magnet type generator which is mounted on an engine of a motorcycle, a buggy vehicle, a snow vehicle, etc. and is used for charging an on-board battery and supplying electric power to electric equipment, and its manufacture. Regarding the method.
【０００２】[0002]
【従来の技術】従来の磁石式発電機のロータは、一般
に、図５の断面図に示すように、カップ状に形成された
本体２１の中央にボス部２４が固定され、本体２１の外
周壁にヨーク部２３が形成され、ヨーク部２３の内側に
沿って、複数に分割形成された環状の永久磁石２２が接
着され、その永久磁石２２の内側に円筒状の保護カバー
２５が接着されて構成される。2. Description of the Related Art Generally, a rotor of a conventional magnet type generator has a boss portion 24 fixed to the center of a cup-shaped body 21 as shown in the sectional view of FIG. A yoke portion 23 is formed on the inner surface of the yoke portion 23, a plurality of annular permanent magnets 22 are formed along the inside of the yoke portion 23, and a cylindrical protective cover 25 is attached inside the permanent magnet 22. To be done.
【０００３】[0003]
【発明が解決しようとする課題】ところで、このような
ロータで使用される円筒状の保護カバー２５は、図６に
示すように円筒にフランジ部２５ａを設けた形状を有
し、鋼鈑などの金属板をプレス加工によりカップ状に深
絞り成形し、中央部を円形に打ち抜いて形成していた。
このため、深絞り加工時に使用する型の製作費や加工工
数が嵩み、製造コストが高くなる問題があった。また、
ヨーク部２３内で永久磁石２２の高さ方向の位置決めの
ために、スペーサ２６を本体２１内の底部に配置する必
要があり、スペーサ２６は合成樹脂の成形体で形成され
るため、型製作費などのコストが高くなる問題があっ
た。By the way, the cylindrical protective cover 25 used in such a rotor has a shape in which a flange portion 25a is provided in the cylinder as shown in FIG. 6, and is made of steel plate or the like. The metal plate was formed by deep drawing into a cup shape by pressing and punching the center part into a circular shape.
For this reason, there has been a problem that the manufacturing cost of the die used during deep drawing and the processing man-hour increase, and the manufacturing cost increases. Also,
In order to position the permanent magnet 22 in the height direction in the yoke portion 23, it is necessary to dispose the spacer 26 at the bottom portion in the main body 21, and the spacer 26 is formed of a synthetic resin molded body. There is a problem that the cost becomes high.
【０００４】そこで、従来、実開平４−１１８７５１号
公報により、保護カバーを帯状の薄板を曲げて形成した
磁石式発電機のロータが提案されている。しかしなが
ら、この保護カバーは、帯状の薄板を円筒状に曲げて形
成されるものの、図６の例と同様に、剛性の高いフラン
ジ部があるため、外周拡径方向にばね力を生じさせるこ
とができず、ロータの本体１内の永久磁石の内側に挿入
した際、磁石の位置決めを行うことができないために、
やはり本体１内の底部にスペーサが必要となり、また、
保護カバーの内周面の真円度が低くなるなどの問題があ
った。In view of this, a rotor for a magnet-type power generator in which a protective cover is formed by bending a belt-shaped thin plate has been proposed in Japanese Utility Model Laid-Open No. 4-118751. However, although this protective cover is formed by bending a strip-shaped thin plate into a cylindrical shape, it has a flange portion with high rigidity as in the example of FIG. 6, and therefore, a spring force can be generated in the outer peripheral radial direction. This is not possible, and when the magnet is positioned inside the permanent magnet in the main body 1 of the rotor, the magnet cannot be positioned.
After all, a spacer is required at the bottom of the main body 1, and
There is a problem that the roundness of the inner peripheral surface of the protective cover is reduced.
【０００５】本発明は、上記の点に鑑みてなされたもの
で、スペーサを使用せずに永久磁石をヨーク部内に位置
決めして容易に取り付けることができ、低コストで製作
することができる磁石式発電機のロータとその製造方法
を提供することを目的とする。The present invention has been made in view of the above points, and the permanent magnet can be positioned and easily attached in the yoke portion without using a spacer, and can be manufactured at a low cost. An object of the present invention is to provide a generator rotor and a manufacturing method thereof.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明の磁石式発電機のロータは、中央にボス部を
設けてカップ状に形成された本体１の外周壁にヨーク部
が形成され、ヨーク部の内側に永久磁石が接着され、永
久磁石の内周面に磁石保護カバーが取着されてなる磁石
式発電機のロータにおいて、磁石保護カバーが帯状の薄
板を円筒状に曲げて形成されると共に、磁石保護カバー
の両側にフランジ部が複数の切欠きを幅方向に設けて形
成され、帯状の薄板を曲げて形成された磁石保護カバー
の先端と末端の間に隙間を設けた状態で、磁石保護カバ
ーがヨーク部内側の永久磁石の内周側に、ばね力を外周
拡径方向に生じさせて取着されていることを特徴とす
る。In order to achieve the above-mentioned object, the rotor of the magneto-electric generator of the present invention has a yoke portion on the outer peripheral wall of the main body 1 formed in a cup shape by providing a boss portion at the center. In the rotor of the magnet type generator, in which the permanent magnet is adhered to the inside of the yoke part and the magnet protection cover is attached to the inner peripheral surface of the permanent magnet, the magnet protection cover bends the strip-shaped thin plate into a cylindrical shape. The magnet protection cover is formed by forming a plurality of notches in the width direction on both sides of the magnet protection cover, and a gap is provided between the tip and the end of the magnet protection cover formed by bending a strip-shaped thin plate. In this state, the magnet protection cover is attached to the inner peripheral side of the permanent magnet inside the yoke part by generating a spring force in the outer peripheral radial expansion direction.
【０００７】ここで、磁石保護カバーのフランジ部に形
成した複数の切欠きは、磁石保護カバーの先端と末端に
近いほど、切欠きと切欠きの間隔が狭くなるように形成
することができる。また、本発明の磁石式発電機のロー
タの製造方法は、中央にボス部を設けてカップ状に形成
された本体１の外周壁にヨーク部が形成され、ヨーク部
の内側に永久磁石が取着され、永久磁石の内周面に磁石
保護カバーが取着されてなる磁石式発電機のロータの製
造方法において、帯状の薄板を円筒状に曲げると共に、
両側にフランジ部を形成し、フランジ部に複数の切欠き
を幅方向に設けて磁石保護カバーを形成する工程と、外
周部に沿って複数の永久磁石を配設した磁石保護カバー
を、ヨークの内側に、そのカバーを外周拡径方向にばね
力を生じさせた状態で嵌め込み仮止めする工程と、接着
剤を使用して永久磁石をヨーク内に接着すると共に、磁
石保護カバーを永久磁石の内周面に接着する工程と、を
含むことを特徴とする。Here, the plurality of notches formed in the flange portion of the magnet protection cover can be formed such that the distance between the notches becomes narrower as they are closer to the tip and the end of the magnet protection cover. Further, in the method for manufacturing the rotor of the magnet type generator of the present invention, the yoke portion is formed on the outer peripheral wall of the main body 1 formed in the shape of a cup with the boss portion provided at the center, and the permanent magnet is provided inside the yoke portion. In the method for manufacturing the rotor of the magnet type generator, which is attached to the inner peripheral surface of the permanent magnet, the magnet protective cover is attached, while bending the strip-shaped thin plate into a cylindrical shape,
The steps of forming a flange portion on both sides and forming a plurality of notches in the flange portion in the width direction to form a magnet protective cover, and a magnet protective cover having a plurality of permanent magnets arranged along the outer peripheral portion The process of fitting the cover inside with the spring force generated in the direction of expanding the outer circumference and temporarily fixing it, and adhering the permanent magnet to the inside of the yoke using an adhesive, and also attaching the magnet protection cover to the inside of the permanent magnet. And a step of adhering to the peripheral surface.
【０００８】[0008]
【作用】このような構成の磁石式発電機のロータは、そ
の製造時にロータ内に永久磁石と磁石保護カバーを取り
付ける際、永久磁石をヨーク部内側に配置し、或いは永
久磁石を磁石保護カバーの外周部に装着した状態で、本
体のヨーク部内に嵌め込む。このとき、磁石保護カバー
がその先端と末端の間に隙間を有し、外周拡径方向にば
ね力を生じさせるように形成されているから、ヨーク部
の内径より少し大きい外径を有する磁石保護カバーを縮
径しながらヨーク部内に嵌め込み、磁石保護カバーの持
つばね力によりそれをヨーク部内の所定位置に仮止めす
る。In the rotor of the magnet type generator having such a structure, when the permanent magnet and the magnet protection cover are mounted in the rotor during manufacturing, the permanent magnet is arranged inside the yoke portion, or the permanent magnet is installed in the magnet protection cover. Fit it in the yoke part of the main body with it attached to the outer peripheral part. At this time, since the magnet protection cover has a gap between the tip and the end thereof and is formed so as to generate a spring force in the outer peripheral radial expansion direction, the magnet protection cover having an outer diameter slightly larger than the inner diameter of the yoke portion. The cover is fitted into the yoke portion while reducing its diameter, and temporarily fixed to a predetermined position in the yoke portion by the spring force of the magnet protection cover.
【０００９】そして、例えば熱硬化型の接着剤を使用す
る場合、ロータ予熱した状態で、接着剤を磁石保護カバ
ーの周囲に滴下し、磁石とヨーク部間、磁石とカバー間
に接着剤を浸透させ、加熱によって接着剤を硬化させて
磁石保護カバーおよび磁石を接着させる。When a thermosetting adhesive is used, for example, the adhesive is dripped around the magnet protective cover in a state where the rotor is preheated, and the adhesive is permeated between the magnet and the yoke and between the magnet and the cover. Then, the adhesive is hardened by heating to bond the magnet protective cover and the magnet.
【００１０】このように、永久磁石及び磁石保護カバー
を、そのばね力を使用して本体のヨーク部の内側に仮止
めするため、従来使用していたスペーサは不要となり、
製造コストを下げることができる。さらに、磁石保護カ
バーは、帯状の薄板を円筒状に曲げて形成するから、従
来のように平板を深絞り加工し中央部を円形に打ち抜い
て円筒状の保護カバーを製作する場合に比べ、加工工数
が非常に少なく、大幅に製造コストを削減することがで
きる。As described above, since the permanent magnet and the magnet protection cover are temporarily fixed to the inside of the yoke portion of the main body by using the spring force thereof, the spacer which has been conventionally used becomes unnecessary,
The manufacturing cost can be reduced. Furthermore, since the magnet protection cover is formed by bending a thin strip into a cylindrical shape, compared to the conventional case where a flat plate is deep-drawn and the center part is punched out into a circular shape, a cylindrical protection cover is manufactured. The number of man-hours is very small, and the manufacturing cost can be significantly reduced.
【００１１】また、磁石保護カバーのフランジ部には複
数の切欠きが幅方向に設けられ、それらの切欠きが、磁
石保護カバーの先端と末端に近いほど、切欠きと切欠き
の間隔が狭くなるように形成することにより、ヨーク部
内に磁石保護カバーを嵌め込む際のばね力を円周方向に
均一になるように調整し、磁石保護カバーの内周部の真
円度を高めることができる。Further, the flange portion of the magnet protection cover is provided with a plurality of notches in the width direction, and the closer the notches are to the tip and the end of the magnet protection cover, the narrower the gap between the notches. With this structure, the spring force when fitting the magnet protection cover into the yoke can be adjusted to be uniform in the circumferential direction, and the circularity of the inner circumference of the magnet protection cover can be increased. .
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１は磁石式発電機のロータの正
面図を示し、図２はその断面図を示している。ロータの
本体１は、磁性体金属を材料にして、熱間鍛造及び切削
加工等により略カップ状に成形される。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a front view of a rotor of a magnet type generator, and FIG. 2 shows a sectional view thereof. The main body 1 of the rotor is made of a magnetic metal and is formed into a substantially cup shape by hot forging and cutting.
【００１３】本体１の中央部に円形の開口部が形成さ
れ、その開口部にボス部４がリベット８をかしめて固定
される。ボス部４には、エンジンのクランクシャフトに
嵌着されるテーパ孔４ａが形成され、ボス部４の先端に
は平坦な締付座面が設けられる。A circular opening is formed in the center of the main body 1, and the boss 4 is fixed to the opening by caulking a rivet 8. The boss portion 4 is formed with a tapered hole 4a to be fitted into the crankshaft of the engine, and the tip of the boss portion 4 is provided with a flat tightening seat surface.
【００１４】本体１の外周壁にはヨーク部３が形成さ
れ、そのヨーク部３の内側に永久磁石２が取着される。
永久磁石２は複数に分割形成され、円環状としてヨーク
部３の内側に配置されるが、各永久磁石２は図４に示す
ように、相互に僅かな間隙を持って、後述の磁石保護カ
バー５の外側に装着され、ヨーク部３内に嵌め込まれ
る。A yoke portion 3 is formed on the outer peripheral wall of the main body 1, and the permanent magnet 2 is attached to the inside of the yoke portion 3.
The permanent magnets 2 are divided into a plurality of parts and are arranged inside the yoke portion 3 as an annular shape. However, as shown in FIG. 4, the permanent magnets 2 have a slight gap therebetween and have a magnet protection cover described later. It is attached to the outside of the yoke 5 and fitted into the yoke portion 3.
【００１５】磁石保護カバー５は、例えばステンレス等
の帯状の金属薄板を曲げ加工して、先端と末端との間に
隙間１０を有した円筒状に形成され、その両側にはフラ
ンジ部６が帯状の薄板の縁部を外周側に直角に曲折して
形成される。また、これら両側のフランジ部６には複数
の切欠き７がその幅方向に（円筒状カバーのラジアル方
向に）形成されている。これらの切欠き７は、円筒状の
磁石保護カバー５の外周拡径方向のばね力を、その外周
部において円周方向に均一に生じさせるために形成され
るものであり、切欠き７と切欠き７の間隔は、図４に示
すように、磁石保護カバー５の先端又は末端つまり隙間
１０に近いほど、短くなるように形成される。The magnet protection cover 5 is formed into a cylindrical shape having a gap 10 between the tip and the end by bending a strip-shaped thin metal plate such as stainless steel, and the flange portions 6 are strip-shaped on both sides thereof. It is formed by bending the edge of the thin plate to the outer peripheral side at a right angle. Further, a plurality of notches 7 are formed in the flange portions 6 on both sides thereof in the width direction thereof (in the radial direction of the cylindrical cover). These notches 7 are formed in order to evenly generate the spring force of the cylindrical magnet protection cover 5 in the radially outer circumferential direction in the circumferential direction at the outer circumferential portion thereof. As shown in FIG. 4, the gap of the notch 7 is formed to be shorter as it is closer to the tip or end of the magnet protection cover 5, that is, the gap 10.
【００１６】すなわち、磁石保護カバー５のフランジ部
６に設けた複数の切欠き７と切欠き７の間隔が同じの場
合、磁石保護カバー５の先端と末端の近傍つまり隙間１
０の近傍には、その中間部側の部分に比べ、外周拡径方
向のばね力が大きく発生する。このため、そのまま複数
の切欠きを等間隔で形成した磁石保護カバーでは、本体
のヨーク部にそれを縮径しながら嵌め込んだ場合、磁石
保護カバーの内径部の円形が変形しやすくなる。これに
対し、切欠き７と切欠き７の間隔を、磁石保護カバー５
の先端又は末端つまり隙間１０に近いほど、短くなるよ
うに形成すれば、カバー５の縮径操作時に生じる外周拡
径方向のばね力は全周方向で均一に生じようになり、磁
石保護カバー５の内径部の真円度を高く形成することが
できる。That is, when a plurality of notches 7 provided in the flange portion 6 of the magnet protection cover 5 and the notches 7 have the same distance, the vicinity of the tip and the end of the magnet protection cover 5, that is, the gap 1
In the vicinity of 0, a larger spring force is generated in the outer peripheral radial direction than in the portion on the intermediate portion side. For this reason, in the magnet protection cover in which the plurality of notches are formed at equal intervals as it is, when the magnet protection cover is fitted into the yoke portion of the main body while reducing the diameter, the circular shape of the inner diameter portion of the magnet protection cover is easily deformed. On the other hand, the gap between the notch 7 and the notch 7 is set to the magnet protection cover 5
If it is formed so as to be shorter as it approaches the tip or end of the cover, that is, the gap 10, the spring force in the outer diameter expanding direction generated during the diameter reducing operation of the cover 5 will be uniformly generated in the entire circumferential direction, and the magnet protection cover 5 The circularity of the inner diameter portion of the can be formed to be high.
【００１７】さらに、図２、図４のように、複数の永久
磁石２を外側に装着してなるヨーク部内への嵌着前の磁
石保護カバー５と永久磁石２の組付体はフリーな状態
で、その外径Ｄ1がヨーク部３の内径Ｄ2より僅かに大き
く形成され、その組付体をヨーク部３に嵌め込む際、磁
石保護カバー５を縮径方向にたわませて圧入することに
より、ヨーク部３内で磁石保護カバー５がばね力をその
外周部拡径方向に生じるようにしている。また、図４に
示すように、複数の永久磁石２を外周部に装着した状態
の磁石保護カバー５は、永久磁石２の外周部がカバー５
のフランジ部６の縁部より僅かに外側に突出するように
形成され、永久磁石２をカバー５のばね力でヨーク部３
内に押し付けるようにしている。Further, as shown in FIGS. 2 and 4, the assembly of the magnet protection cover 5 and the permanent magnet 2 before being fitted into the yoke portion, which is formed by mounting the plurality of permanent magnets 2 on the outside, is in a free state. The outer diameter D 1 thereof is slightly larger than the inner diameter D 2 of the yoke portion 3, and when the assembly is fitted into the yoke portion 3, the magnet protection cover 5 is bent in the diameter reducing direction and press-fitted. As a result, the magnet protection cover 5 generates a spring force in the yoke portion 3 in the radial direction of the outer peripheral portion thereof. Further, as shown in FIG. 4, in the magnet protection cover 5 in which a plurality of permanent magnets 2 are mounted on the outer peripheral portion, the outer peripheral portion of the permanent magnet 2 is covered by the cover 5.
Of the permanent magnet 2 is formed so as to project slightly outward from the edge of the flange portion 6, and the permanent magnet 2 is moved by the spring force of the cover 5 to the yoke portion 3.
I try to press it inside.
【００１８】次に、ロータの製造時、上記の永久磁石２
と磁石保護カバー５を本体１のヨーク部２内に組付け、
接着する工程を説明すると、先ず、図４のように複数の
永久磁石２を外周部に装着した磁石保護カバー５を、縮
径方向にたわませてヨーク部３内に圧入する。このと
き、磁石保護カバー５はその外周拡径方向にばね力を生
じさせ、各永久磁石２をヨーク部３内に押し付けてこの
位置で嵌着されるから、図２に示すような所定の位置
で、磁石保護カバー５と永久磁石２をスペーサなしで容
易に仮止めすることができる。Next, when manufacturing the rotor, the above-mentioned permanent magnet 2 is used.
Assemble the magnet protection cover 5 in the yoke portion 2 of the main body 1,
Explaining the step of adhering, first, a magnet protection cover 5 having a plurality of permanent magnets 2 mounted on its outer peripheral portion as shown in FIG. 4 is bent in the diameter reducing direction and press-fitted into the yoke portion 3. At this time, the magnet protection cover 5 generates a spring force in the direction of the outer diameter of the magnet, and the permanent magnets 2 are pressed into the yoke portion 3 and fitted at this position. Therefore, the predetermined position as shown in FIG. Thus, the magnet protection cover 5 and the permanent magnet 2 can be easily temporarily fixed without a spacer.
【００１９】次に、ロータの開口した正面側を上に底部
を下にした状態で、ロータの開口側から接着剤を磁石保
護カバー５と永久磁石２の全周に均等に滴下し、接着剤
はヨーク部３の内周面と永久磁石２との隙間、及び永久
磁石２と磁石保護カバー５の隙間に浸透する。接着剤が
加熱硬化型の場合、この状態のロータを加熱して接着剤
を硬化させ、接着を完了する。Next, with the front side of the rotor opened facing upward and the bottom of the rotor facing downward, the adhesive is evenly dropped from the opening side of the rotor over the entire circumference of the magnet protection cover 5 and the permanent magnet 2 to form an adhesive. Penetrates into the gap between the inner peripheral surface of the yoke portion 3 and the permanent magnet 2 and the gap between the permanent magnet 2 and the magnet protection cover 5. When the adhesive is a heat-curable type, the rotor in this state is heated to cure the adhesive and the adhesion is completed.
【００２０】このように、外周部に複数の永久磁石２を
並べて装着した磁石保護カバー５を少し縮径方向にたわ
ませながら、ヨーク部内に圧入し、所定位置に仮止めし
た状態で、接着剤によりそれらをヨーク部内に接着する
から、従来のようにヨーク部内にスペーサを入れたり、
ヨーク部内に磁石を保持するための突起を設ける必要が
なく、従来より少ない部品点数と少ない加工工数でロー
タを低コストで製造することができる。In this way, the magnet protection cover 5 having the plurality of permanent magnets 2 arranged side by side on the outer periphery is pressed in the yoke portion while being bent in the radial direction, and is temporarily fixed at a predetermined position to be bonded. Since they are adhered to the inside of the yoke with a chemical agent, spacers are put inside the yoke as in the past,
Since it is not necessary to provide a protrusion for holding the magnet in the yoke portion, the rotor can be manufactured at a low cost with a smaller number of parts and a smaller number of processing steps than the conventional one.
【００２１】なお、上記実施例では、ヨーク部内に永久
磁石と磁石保護カバーを嵌め込んだ状態で、接着剤をそ
の周面に滴下して接着剤を各部材の隙間に浸透させて接
着したが、嵌め込む前に予め接着剤を永久磁石、磁石保
護カバー及びヨーク部の各当接面に塗布して接着するこ
ともできる。In the above embodiment, the permanent magnet and the magnet protective cover are fitted in the yoke portion, and the adhesive is dripped on the peripheral surface of the yoke so that the adhesive permeates into the gaps between the members and is bonded. It is also possible to apply an adhesive agent to the abutting surfaces of the permanent magnet, the magnet protection cover and the yoke portion in advance and to bond them before fitting.
【００２２】[0022]
【発明の効果】以上説明したように、本発明の磁石式発
電機のロータとその製造方法によれば、永久磁石及び磁
石保護カバーを、そのカバーばね力を使用して本体のヨ
ーク部の内側に仮止めするため、従来使用していたスペ
ーサは不要となり、製造コストを下げることができ、ま
た、磁石保護カバーは、帯状の薄板を円筒状に曲げて形
成されるから、従来のように平板を深絞り加工し中央部
を円形に打ち抜いて円筒状の保護カバーを製作する場合
に比べ、加工工数が非常に少なく、大幅に製造コストを
削減することができる。As described above, according to the rotor of the magnet type generator of the present invention and the manufacturing method thereof, the permanent magnet and the magnet protective cover are provided inside the yoke portion of the main body by using the cover spring force. Since the spacers that are used in the past are not needed, the manufacturing cost can be reduced, and the magnet protection cover is formed by bending a strip-shaped thin plate into a cylindrical shape. As compared with a case where a cylindrical protective cover is manufactured by deep-drawing and punching the center part in a circular shape, the number of processing steps is extremely small, and the manufacturing cost can be significantly reduced.
【図１】本発明の一実施形態を示す磁石式発電機のロー
タの正面図である。FIG. 1 is a front view of a rotor of a magnet type generator showing an embodiment of the present invention.
【図２】同ロータの断面図である。FIG. 2 is a sectional view of the rotor.
【図３】磁石保護カバーの斜視図である。FIG. 3 is a perspective view of a magnet protection cover.
【図４】磁石保護カバーと永久磁石の正面図である。FIG. 4 is a front view of a magnet protection cover and a permanent magnet.
【図５】従来の磁石式発電機のロータの断面図である。FIG. 5 is a sectional view of a rotor of a conventional magnet type generator.
【図６】従来の保護カバーの斜視図である。FIG. 6 is a perspective view of a conventional protective cover.
１−本体 ２−永久磁石 ３−ヨーク部 ４−ボス部 ５−磁石保護カバー ６−フランジ部 ７−切欠き 1-Main body 2-permanent magnet 3-Yoke part 4-boss 5-Magnet protection cover 6-flange 7-notch
フロントページの続き Ｆターム(参考） 5H002 AA07 AB07 AC08 AE07 AE08 5H621 BB07 GA02 HH01 JK02 JK05 JK08 5H622 CA02 CA05 CA10 CB01 PP03 PP10 PP18 QA10 Continued front page F-term (reference) 5H002 AA07 AB07 AC08 AE07 AE08 5H621 BB07 GA02 HH01 JK02 JK05 JK08 5H622 CA02 CA05 CA10 CB01 PP03 PP10 PP18 QA10
Claims (3)
れた本体１の外周壁にヨーク部が形成され、該ヨーク部
の内側に永久磁石が接着され、該永久磁石の内周面に磁
石保護カバーが取着されてなる磁石式発電機のロータに
おいて、 該磁石保護カバーが帯状の薄板を円筒状に曲げて形成さ
れると共に、該磁石保護カバーの両側にフランジ部が複
数の切欠きを幅方向に設けて形成され、帯状の薄板を円
筒状に曲げて形成された磁石保護カバーの先端と末端の
間に隙間を設けた状態で、該磁石保護カバーがヨーク部
内側の永久磁石の内周側に、ばね力を外周拡径方向に生
じさせて取着されていることを特徴とする磁石式発電機
のロータ。1. A yoke portion is formed on an outer peripheral wall of a main body 1 having a boss portion at the center and formed into a cup shape, and a permanent magnet is adhered to the inside of the yoke portion, and an inner peripheral surface of the permanent magnet is formed. In a rotor of a magnet type generator having a magnet protection cover attached thereto, the magnet protection cover is formed by bending a thin strip-shaped plate into a cylindrical shape, and a plurality of cutouts are provided on both sides of the magnet protection cover. Is provided in the width direction, and the magnet protection cover is formed by bending a strip-shaped thin plate into a cylindrical shape with a gap provided between the tip and the end of the magnet protection cover. A rotor for a magnet-type generator, characterized in that the rotor is attached to the inner peripheral side by generating a spring force in the outer peripheral radial direction.
した複数の切欠きは、該磁石保護カバーの先端と末端に
近いほど、該切欠きと切欠きの間隔が狭くなるように形
成されている請求項１記載の磁石式発電機のロータ。2. The plurality of notches formed in the flange portion of the magnet protection cover are formed such that the closer the tip and the end of the magnet protection cover are, the narrower the distance between the notches. The rotor of the magnet type generator according to claim 1.
れた本体１の外周壁にヨーク部が形成され、該ヨーク部
の内側に永久磁石が取着され、該永久磁石の内周面に磁
石保護カバーが取着されてなる磁石式発電機のロータの
製造方法において、 帯状の薄板を円筒状に曲げると共に、両側にフランジ部
を形成し、該フランジ部に複数の切欠きを幅方向に設け
て前記磁石保護カバーを形成する工程と、 外周部に沿って複数の永久磁石を配設した磁石保護カバ
ーを、前記ヨークの内側に、該カバーの外周拡径方向に
ばね力を生じさせた状態で嵌め込み仮止めする工程と、 接着剤を使用して前記永久磁石を前記ヨーク内に接着す
ると共に、前記磁石保護カバーを該永久磁石の内周面に
接着する工程と、 を含むことを特徴とする磁石式発電機のロータの製造方
法。3. A yoke portion is formed on an outer peripheral wall of a main body 1 formed in a cup shape with a boss portion provided at the center, and a permanent magnet is attached inside the yoke portion, and an inner peripheral surface of the permanent magnet is attached. In a method for manufacturing a rotor of a magnet type generator in which a magnet protection cover is attached to a magnet, a thin strip is bent into a cylindrical shape, flanges are formed on both sides, and a plurality of notches are formed in the flange in the width direction. The step of forming the magnet protection cover on the inside of the yoke, and a magnet protection cover in which a plurality of permanent magnets are arranged along the outer peripheral portion of the magnet protection cover to generate a spring force inside the yoke in a radial expansion direction of the outer circumference. In a state where the permanent magnet is fitted and temporarily fixed, and a step of adhering the permanent magnet to the inside of the yoke with an adhesive and adhering the magnet protection cover to an inner peripheral surface of the permanent magnet. Characteristic magnet generator rotor Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001297497A JP4651888B2 (en) | 2001-09-27 | 2001-09-27 | Magnet generator rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001297497A JP4651888B2 (en) | 2001-09-27 | 2001-09-27 | Magnet generator rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003111325A true JP2003111325A (en) | 2003-04-11 |
| JP4651888B2 JP4651888B2 (en) | 2011-03-16 |
Family
ID=19118565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001297497A Expired - Fee Related JP4651888B2 (en) | 2001-09-27 | 2001-09-27 | Magnet generator rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4651888B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7402930B2 (en) | 2006-04-07 | 2008-07-22 | Mitsubishi Electric Corp. | Magnetoelectric generator |
| US7508105B2 (en) * | 2002-04-22 | 2009-03-24 | Mitsubishi Denki Kabushiki Kaisha | Magneto-generator |
| JP2011130530A (en) * | 2009-12-15 | 2011-06-30 | Honda Motor Co Ltd | Axial gap motor and manufacturing method of rotor of the same |
| RU2548662C1 (en) * | 2014-06-05 | 2015-04-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" | Synchronous generator with excitation from permanent magnets |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156313A (en) * | 1976-06-23 | 1977-12-26 | Hitachi Ltd | Rotor for magneto |
| JPH0249347A (en) * | 1988-08-11 | 1990-02-19 | Matsushita Electric Ind Co Ltd | Welder for battery and manufacture thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH066684Y2 (en) * | 1988-09-27 | 1994-02-16 | 日興電機工業株式会社 | Magnet holding structure for permanent magnet type motors |
-
2001
- 2001-09-27 JP JP2001297497A patent/JP4651888B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156313A (en) * | 1976-06-23 | 1977-12-26 | Hitachi Ltd | Rotor for magneto |
| JPH0249347A (en) * | 1988-08-11 | 1990-02-19 | Matsushita Electric Ind Co Ltd | Welder for battery and manufacture thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7508105B2 (en) * | 2002-04-22 | 2009-03-24 | Mitsubishi Denki Kabushiki Kaisha | Magneto-generator |
| US7402930B2 (en) | 2006-04-07 | 2008-07-22 | Mitsubishi Electric Corp. | Magnetoelectric generator |
| JP2011130530A (en) * | 2009-12-15 | 2011-06-30 | Honda Motor Co Ltd | Axial gap motor and manufacturing method of rotor of the same |
| RU2548662C1 (en) * | 2014-06-05 | 2015-04-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" | Synchronous generator with excitation from permanent magnets |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4651888B2 (en) | 2011-03-16 |
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