JPS61196747A - Rotary electric machine in magnet system - Google Patents
Rotary electric machine in magnet systemInfo
- Publication number
- JPS61196747A JPS61196747A JP3405685A JP3405685A JPS61196747A JP S61196747 A JPS61196747 A JP S61196747A JP 3405685 A JP3405685 A JP 3405685A JP 3405685 A JP3405685 A JP 3405685A JP S61196747 A JPS61196747 A JP S61196747A
- Authority
- JP
- Japan
- Prior art keywords
- cover
- yoke
- magnet
- magnets
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc Machiner (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はヨークの内周に磁石を固定するための磁石式回
転電機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic rotating electrical machine for fixing magnets to the inner periphery of a yoke.
本発明は磁石を用いる磁石式回転電機において、内周に
磁石の内周両端を保持するＬ字状の保持部を有するカバ
ーを、１枚の板を両端が隙間を介して対向するように円
筒状にまるめることにより、ヨークの内周にカバーを挿
入して、このカバーの外周径方向側に拡がる力を利用し
て、カバーをヨークの内周に圧接し、磁石をヨークの内
周に固定するようにしたものである。The present invention relates to a magnetic rotating electrical machine using magnets, in which a cover having an L-shaped holding part for holding both ends of the inner periphery of the magnet is arranged in a cylindrical shape using a single plate with both ends facing each other with a gap between them. By rolling it into a shape, insert the cover into the inner circumference of the yoke, and use the force that spreads in the outer circumference radial direction of the cover to press the cover against the inner circumference of the yoke and fix the magnet to the inner circumference of the yoke. It was designed to do so.
従来のものは特表昭５７−５０１９８９号公報に示すよ
うに、ヨークの内周に配置した複数個の円弧状磁石間に
Ｕ字状の板バネを挿入して、周方向に押圧して、磁石を
ヨークの内周に固定している。As shown in Japanese Patent Publication No. 57-501989, the conventional one inserts a U-shaped leaf spring between a plurality of arc-shaped magnets arranged on the inner periphery of a yoke and presses it in the circumferential direction. A magnet is fixed to the inner circumference of the yoke.
ところが上述した従来のものでは、Ｕ字状の板バネを、
磁石間にそれぞれ挿入するため、板バネが複数個必要で
あり、部品点数が増し、また組み付は時に、板バネをそ
れぞれ挿入する必要があるので、組み付は工数がかかる
という問題点がある。However, in the conventional type mentioned above, the U-shaped leaf spring is
In order to insert each leaf spring between the magnets, multiple leaf springs are required, which increases the number of parts.Also, sometimes it is necessary to insert each leaf spring, so there is a problem that assembly takes a lot of man-hours. .
そこで、本発明は、ヨークへの磁石の固定を容易に行う
ものである。Therefore, the present invention facilitates fixing the magnet to the yoke.
ヨークの内周に配置される複数個の円弧状の磁石と、
１枚の板を両端が対向するように円筒状にまるめると共
に、内周に前記磁石の内周両端を保持するＬ字状の保持
部を有するカバーとを備え、このカバーの外周径方向側
に拡がる力により、前記カバーを前記ヨークの内周に圧
接することを特徴とする磁石式回転電機とすることであ
る。A plurality of arc-shaped magnets are arranged on the inner periphery of the yoke, and an L-shaped plate is formed by rolling a plate into a cylindrical shape with both ends facing each other, and holding both ends of the inner periphery of the magnets on the inner periphery. and a cover having a holding portion, and the cover is brought into pressure contact with the inner circumference of the yoke by a force that spreads in the outer circumferential direction of the cover.
ｒ作 用〕
カバーの外周径方向側に拡がる力を利用して、カバーが
ヨークの内周に固定され、また磁石もＬ字状の保持部に
より、ヨークの内周に押圧されて、固定される。r action] The cover is fixed to the inner circumference of the yoke by using the force that spreads in the outer circumference radial direction of the cover, and the magnet is also fixed by being pressed against the inner circumference of the yoke by the L-shaped holding part. Ru.
以下本発明を図に示す実施例について説明する。 The present invention will be described below with reference to embodiments shown in the drawings.
第１図ないし第３図に示す第１実施例において、１は電
動機のヨークであり、端部に位置決め用の切り欠き部１
ａが形成しである。In the first embodiment shown in FIGS. 1 to 3, 1 is a yoke of an electric motor, and a notch 1 for positioning is provided at the end.
a is formed.
２はコーク１の内周に配置される円弧状の磁石であり、
２個設けである。2 is an arc-shaped magnet placed on the inner circumference of the coke 1;
Two pieces are provided.
３は磁石カバーであり、第４図＋８＞に示す１枚の非磁
性体の板を、まず第４図（ｂｌに示すように、プレス加
工により周方向に向き合うように、それぞれＬ字状の保
持部３ａ、３ｂを形成する。そして、この保持部３ａ、
３ｂの形成と共に、カバー３の外周に矩形状の穴３ｄが
形成される。次に、第４図［Ｃ）に示すように、保持部
３ａ、３ｂを内側にして、円筒状にまるめる。そして、
磁石カバー３の端部にも、ヨーク１の切り欠き部１ａに
対応する切り欠き部３ｃが形成されている。また、カバ
ー３の組み付は前の外周径Ａは、ヨーク１の内周径Ｂに
対して大きいものとしである。さらに、第２図に示すよ
うに、カバー３の保持ｓ３ａ、３ ｂの内周とカバー３
の外周との間の距離Ｃは、磁石２の厚みＤよりも等しい
か、若干小さいものとしである。また、カバー３の両端
は隙間Ｅを介して、対向している。さらに、カバー３の
矩形状の穴３ｄは、磁石２の大きさとほぼ等しいものと
しである。3 is a magnet cover, in which one non-magnetic plate shown in Fig. 4+8> is first pressed into L-shaped plates so that they face each other in the circumferential direction, as shown in Fig. 4 (bl). Holding portions 3a and 3b are formed.The holding portions 3a and 3b are formed.
Along with the formation of the hole 3b, a rectangular hole 3d is formed on the outer periphery of the cover 3. Next, as shown in FIG. 4 [C], it is rolled up into a cylindrical shape with the holding parts 3a and 3b facing inside. and,
A notch 3c corresponding to the notch 1a of the yoke 1 is also formed at the end of the magnet cover 3. Further, the cover 3 is assembled so that the outer circumferential diameter A is larger than the inner circumferential diameter B of the yoke 1. Furthermore, as shown in FIG.
The distance C between the magnet 2 and the outer periphery is equal to or slightly smaller than the thickness D of the magnet 2. Further, both ends of the cover 3 face each other with a gap E interposed therebetween. Furthermore, the rectangular hole 3d of the cover 3 is approximately equal in size to the magnet 2.
４はハウジングであり、このハウジング４の位置決め部
４ａにより、ヨーク１を周方向に位置決めする。そして
、ハウジング４の内周には、軸方向に突出部４ｂが形成
され、この突出部４ｂにより、磁石カバー３の軸方向と
径方向内周側への移動を規制している。また、ハウジン
グ４の中央には、円筒部４ｃが設けられている。4 is a housing, and a positioning portion 4a of this housing 4 positions the yoke 1 in the circumferential direction. A protruding part 4b is formed in the inner circumference of the housing 4 in the axial direction, and this protruding part 4b restricts movement of the magnet cover 3 in the axial direction and radially inner circumferential side. Furthermore, a cylindrical portion 4c is provided at the center of the housing 4.
５はエンドフレームであり、このエンドフレーム５の端
面の位置決め部５ａにより、ヨーク１を周方向に位置決
めする。そして、エンドフレーム５の内周には、軸方向
に突出する５ｂが形成され、この突出部５ｂにより、磁
石カバー３の軸方向と径方向内周側への移動を規制して
いる。また、工ンドフレーム５の中央には、ボス部５ｃ
が形成されている。Reference numeral 5 denotes an end frame, and the yoke 1 is positioned in the circumferential direction by a positioning portion 5a on the end surface of the end frame 5. An axially protruding portion 5b is formed on the inner periphery of the end frame 5, and this protruding portion 5b restricts movement of the magnet cover 3 in the axial direction and radially inner circumferential side. In addition, a boss portion 5c is provided at the center of the machined frame 5.
is formed.
７は電機子であり、磁石カバー３の内周に配置される。Reference numeral 7 denotes an armature, which is arranged on the inner periphery of the magnet cover 3.
電機子７の一端には、整流子８が形成ささている。そし
て、電機子７のシャフト７ａの両端は、それぞれハウジ
ング４の円筒部４ｃとエンドフレーム５のボス部５Ｃに
、軸受９を介して、回転自在に支持されている。A commutator 8 is formed at one end of the armature 7. Both ends of the shaft 7a of the armature 7 are rotatably supported by the cylindrical portion 4c of the housing 4 and the boss portion 5C of the end frame 5 via bearings 9, respectively.
次に組み付けについて説明すると、磁石２は仮着磁状態
（もしくは無着磁状態）としておく。そして、カバー３
の外周の矩形状の穴３ｄに上記磁石２を挿入する。また
、磁石２は保持部３ａ、３ｂにより、周方向側面および
内周面を保持される。Next, assembling will be described. The magnet 2 is temporarily magnetized (or non-magnetized). And cover 3
The magnet 2 is inserted into the rectangular hole 3d on the outer periphery of the magnet 2. Further, the circumferential side surface and inner circumferential surface of the magnet 2 are held by the holding portions 3a and 3b.
そして、カバー３をまるめて、外周径Ａをヨーク１の内
周径Ｂよりも小さくし、ヨーク１の内周に挿入する。こ
の時、ヨーク１の切り欠き部１ａとカバー３の切り欠き
部３Ｃとにより、位置決めをする。また、カバー３をま
るめることにより、カバー３が外周径方向側に拡がる力
（矢印Ｆ）を利用して、カバー３をヨークｌに固定する
。この時、第２図に示すように、カバー３の保持部３ａ
、３ｂの内周とカバー３の外周との間の距離Ｃを、磁石
２厚みＤよりも若干小さくしであるので、カバー３をヨ
ーク１内に組み付けた時、保持部３ａ。Then, the cover 3 is rolled up so that the outer circumferential diameter A is smaller than the inner circumferential diameter B of the yoke 1, and is inserted into the inner circumference of the yoke 1. At this time, positioning is performed using the notch 1a of the yoke 1 and the notch 3C of the cover 3. Further, by rolling the cover 3, the cover 3 is fixed to the yoke l by utilizing the force (arrow F) that causes the cover 3 to expand in the outer circumferential radial direction. At this time, as shown in FIG.
, 3b and the outer periphery of the cover 3 is slightly smaller than the thickness D of the magnet 2, so when the cover 3 is assembled into the yoke 1, the holding part 3a.
３ｂにより、磁石２をヨーク１内に押圧している。3b presses the magnet 2 into the yoke 1.
そして、磁石２をヨーク１内に固定している。次に、磁
石２を外周着磁（もしくは内周着磁）すれば、磁石２は
ヨーク１内に確実に固定される。その後、電機子７のシ
ャフト７ａを軸受９を介して、ハウジング４の円筒部４
ｄに支持しつつ、ヨーク１の開口端にハウジング４をか
ぶせる。また、ヨーク１の開口端に、エンドフレーム５
をかぶせる。The magnet 2 is fixed inside the yoke 1. Next, by magnetizing the outer circumference (or inner circumference) of the magnet 2, the magnet 2 is securely fixed within the yoke 1. Thereafter, the shaft 7a of the armature 7 is connected to the cylindrical portion 4 of the housing 4 through the bearing 9.
Cover the open end of the yoke 1 with the housing 4 while supporting it at the yoke d. Also, an end frame 5 is attached to the open end of the yoke 1.
cover.
この時、シャフト７ａの一端を軸受９を介して、エンド
フレーム５のボス部５ｃに挿入させる。そして、図示し
ないスルーボルトを用いて、ハウジング４、ヨーク１、
エンドフレーム５を一体に固定する。また、ハウジング
４の突出部４ｂおよびエンドフレーム５の突出部５ｂと
、ヨーク１との間にカバー３が配置されることにより、
カバー３の軸方向および径方向内周側への移動を確実に
規制することができる。さらに、磁石２を収納したカバ
ー３をまるめて、ヨーク１内に挿入して、カバー３の外
周径方向側に拡がる力を利用して、ヨーク１に磁石２を
固定しているので、カバー３を必要とするのみで、部品
点数も少なくでき、また組み付けもカバー３の挿入のみ
で、容易にできる。At this time, one end of the shaft 7a is inserted into the boss portion 5c of the end frame 5 via the bearing 9. Then, using through bolts (not shown), the housing 4, the yoke 1,
The end frame 5 is fixed together. Furthermore, by disposing the cover 3 between the protrusion 4b of the housing 4 and the protrusion 5b of the end frame 5 and the yoke 1,
Movement of the cover 3 toward the inner circumferential side in the axial direction and the radial direction can be reliably restricted. Furthermore, the cover 3 containing the magnet 2 is rolled up and inserted into the yoke 1, and the magnet 2 is fixed to the yoke 1 by using the force that spreads in the outer radial direction of the cover 3. , the number of parts can be reduced, and assembly can be easily accomplished by simply inserting the cover 3.
なお、第５図に示す第２実施例においては、磁石２の周
方向端面には、補極１０が配置されている。この場合に
おいても、保持部３ａ、３ｂにより、磁石２および補極
１０を保持して、磁石２と補極１０を同時に、ヨーク１
に固定でき、組み付は工数を低減できる。また、補極１
０は電機子７が矢印方向に回転する時、磁石２の増磁側
（回転方向と反対側）に設けることにより、分巻特性か
ら直巻特性に変えて高電流域でトルクが上がり、低電流
域で回転を上げることができる。In the second embodiment shown in FIG. 5, a commutating pole 10 is arranged on the circumferential end surface of the magnet 2. In this case as well, the magnet 2 and the commutating pole 10 are held by the holding parts 3a and 3b, and the magnet 2 and the commutating pole 10 are simultaneously attached to the yoke 1.
can be fixed in place, reducing assembly man-hours. Also, the commutative pole 1
0 is provided on the magnetizing side of the magnet 2 (opposite to the rotation direction) when the armature 7 rotates in the direction of the arrow, changing from the shunt winding characteristic to the series winding characteristic, increasing torque in the high current range and reducing the The rotation can be increased in the current range.
また、カバー３を薄くする場合には、カバー３を磁性体
で形成してもよく、磁石２の減磁側（回転方向側）の保
持部３ａが、減磁防止の効果をもつことができる。Further, when the cover 3 is made thin, the cover 3 may be formed of a magnetic material, and the holding portion 3a on the demagnetization side (rotation direction side) of the magnet 2 can have the effect of preventing demagnetization. .
また、第６図に示す第３実施例においては、ヨーク１の
内周側に打ち出し部１ｂを形成する。そして、カバー３
の両端面の隙間Ｅを上記打ち出し部１ｂにはめることに
より、カバー３の端面が周方向に拡がる力を有し、より
確実にカバー３がヨーク１の内周に固定される。Further, in the third embodiment shown in FIG. 6, a protruding portion 1b is formed on the inner peripheral side of the yoke 1. And cover 3
By fitting the gap E between both end faces of the cover 3 into the punched out portion 1b, the end face of the cover 3 has a force that expands in the circumferential direction, and the cover 3 is fixed to the inner periphery of the yoke 1 more reliably.
さらに、カバー３のＬ字状の保持部３ａ、３ｂを周方向
に設けたが、Ｌ字状の保持部３ａ、３ｂを軸方向に設け
て、磁石２の軸方向端面と内周面を保持するようにして
もよい。Further, although the L-shaped holding parts 3a and 3b of the cover 3 are provided in the circumferential direction, the L-shaped holding parts 3a and 3b are provided in the axial direction to hold the axial end surface and inner peripheral surface of the magnet 2. You may also do so.
また、本発明を電動機に用いたが、磁石式発電機に用い
てもよい。Further, although the present invention is used for an electric motor, it may also be used for a magnetic generator.
以上述べたように本発明にいては、Ｌ字状の保持部に磁
石を保持したカバーをまるめて、ヨーク内に挿入して、
カバーが外周径方向側に拡がるカにより、カバーをヨー
クの内周に圧接したから、カバーを用いるのみで磁石が
固定できるので、部品点数を少なくすることができ、ま
たカバーをヨ−ク内に挿入して、複数個の磁石を一度に
ヨーク内に固定でき、組み付は工数を低減することがで
きるという優れた効果がある。As described above, in the present invention, the cover holding the magnet is rolled up in the L-shaped holding part and inserted into the yoke.
Since the cover is pressed against the inner circumference of the yoke by the force of the cover expanding in the outer radial direction, the magnet can be fixed just by using the cover, which reduces the number of parts and also allows the cover to be placed inside the yoke. It has the excellent effect that a plurality of magnets can be inserted and fixed in the yoke at once, and the number of assembly steps can be reduced.
第１図は本発明磁石式回転電機の第１実施例の要部を示
す分解斜視図、第２図は上記第１実施例の要部を示す横
断面図、第３図は上記第１実施例における磁石式回転電
機の縦断面図、第４図（ａ）。
（ｂ）、 （Ｃ）は順次カバーの作成を示す斜視図、第
５図は本発明磁石式回転電機の第２実施例の要部を示す
横断面図、第６図は本発明磁石式回転電機の第３実施例
の要部を示す正面図である。
１・・・ヨーク、２・・・磁石、３・・・カバー、３ａ
、３ｂ・・・Ｌ字部。
代理人弁理士 岡 部 隆
第６図FIG. 1 is an exploded perspective view showing the main parts of the first embodiment of the magnetic rotating electrical machine of the present invention, FIG. 2 is a cross-sectional view showing the main parts of the first embodiment, and FIG. FIG. 4(a) is a longitudinal cross-sectional view of the magnet-type rotating electric machine in the example. (b) and (C) are perspective views showing the sequential creation of covers, FIG. 5 is a cross-sectional view showing the main part of the second embodiment of the magnet-type rotating electric machine of the present invention, and FIG. It is a front view which shows the principal part of 3rd Example of an electric machine. 1... Yoke, 2... Magnet, 3... Cover, 3a
, 3b...L-shaped part. Representative Patent Attorney Takashi Okabe Figure 6
Claims (1)
に、内周に前記磁石の内周両端を保持するＬ字状の保持
部を有するカバーとを備え、このカバーの外周径方向側
に拡がる力により、前記カバーを前記ヨークの内周に圧
接することを特徴とする磁石式回転電機。[Claims] A plurality of arc-shaped magnets arranged on the inner periphery of a yoke, a plate rolled into a cylindrical shape with both ends facing each other, and both inner periphery ends of the magnets arranged on the inner periphery. 1. A magnet-type rotating electrical machine, comprising: a cover having an L-shaped holding portion for holding the cover; and a force extending in a radial direction toward the outer circumference of the cover presses the cover against the inner circumference of the yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3405685A JPS61196747A (en) | 1985-02-21 | 1985-02-21 | Rotary electric machine in magnet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3405685A JPS61196747A (en) | 1985-02-21 | 1985-02-21 | Rotary electric machine in magnet system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61196747A true JPS61196747A (en) | 1986-08-30 |
Family
ID=12403617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3405685A Pending JPS61196747A (en) | 1985-02-21 | 1985-02-21 | Rotary electric machine in magnet system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61196747A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0238249A2 (en) * | 1986-03-17 | 1987-09-23 | Johnson Electric Industrial Manufactory Limited | An electric motor |
| FR2639159A1 (en) * | 1988-11-14 | 1990-05-18 | Equip Electr Moteur | Stator of rotating electric machine with field poles with permanent magnet |
| EP0706254A1 (en) * | 1994-10-05 | 1996-04-10 | Nippondenso Co., Ltd. | Electric rotating machine and manufacturing method of the same |
| EP0798842A1 (en) * | 1996-03-31 | 1997-10-01 | Sanyo Electric Co. Ltd | Magnet motor |
| WO2000059096A1 (en) * | 1999-03-31 | 2000-10-05 | Webster Plastics | Magnet carrier for motor housing |
| WO2008116678A1 (en) * | 2007-03-26 | 2008-10-02 | Robert Bosch Gmbh | Magnetic mount for an electric motor |
| WO2011095243A1 (en) * | 2010-02-02 | 2011-08-11 | Robert Bosch Gmbh | Outer body of an electromechanical energy converter |
| JP2011166952A (en) * | 2010-02-10 | 2011-08-25 | Fuji Electric Co Ltd | Permanent magnet rotary machine |
| CN105099019A (en) * | 2014-04-28 | 2015-11-25 | 德昌电机(深圳)有限公司 | Electric power assisted steering system, permanent magnet motor of electric power assisted steering system, and casing assembly |
| CN105141052A (en) * | 2015-09-10 | 2015-12-09 | 中国科学院声学研究所 | Permanent magnet direct current motor and method for assembling the same |
-
1985
- 1985-02-21 JP JP3405685A patent/JPS61196747A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0238249A2 (en) * | 1986-03-17 | 1987-09-23 | Johnson Electric Industrial Manufactory Limited | An electric motor |
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| CN105099019A (en) * | 2014-04-28 | 2015-11-25 | 德昌电机(深圳)有限公司 | Electric power assisted steering system, permanent magnet motor of electric power assisted steering system, and casing assembly |
| CN105141052A (en) * | 2015-09-10 | 2015-12-09 | 中国科学院声学研究所 | Permanent magnet direct current motor and method for assembling the same |
| CN105141052B (en) * | 2015-09-10 | 2018-03-30 | 中国科学院声学研究所 | The assembly method of permanent magnet DC motor and permanent magnet DC motor |
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