JP2001178041A - Permanent-magnet rotor and manufacturing method therefor - Google Patents
Permanent-magnet rotor and manufacturing method thereforInfo
- Publication number
- JP2001178041A JP2001178041A JP36156499A JP36156499A JP2001178041A JP 2001178041 A JP2001178041 A JP 2001178041A JP 36156499 A JP36156499 A JP 36156499A JP 36156499 A JP36156499 A JP 36156499A JP 2001178041 A JP2001178041 A JP 2001178041A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- rotor yoke
- adhesive
- rotor
- groove
- 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
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、円筒状の回転子ヨ
ークの外周面上に、リング状の永久磁石を接着剤で接着
固定する永久磁石形回転子と、その製造方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type rotor in which a ring-shaped permanent magnet is bonded and fixed on an outer peripheral surface of a cylindrical rotor yoke with an adhesive, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】従来、永久磁石形回転子の製造におい
て、円筒状の回転子ヨークの外周面上に、リング状の永
久磁石を接着剤で接着固定する場合は、回転子ヨークの
外周面上の複数個所に単に接着剤を盛り付けた後、リン
グ状の永久磁石を円筒状の回転子ヨークの外周面上に嵌
合するようにしていた。2. Description of the Related Art Conventionally, in manufacturing a permanent magnet type rotor, when a ring-shaped permanent magnet is bonded and fixed to the outer peripheral surface of a cylindrical rotor yoke with an adhesive, the outer peripheral surface of the rotor yoke is required. After the adhesive is simply applied to a plurality of locations, a ring-shaped permanent magnet is fitted on the outer peripheral surface of the cylindrical rotor yoke.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の永久磁石形回転子の製造方法においては、次
のような問題があった。つまり、接着剤は自分自身の表
面張力でたくさん溜まったところに集まる性質があり、
円筒状の回転子ヨークの外周面にリング状の永久磁石を
嵌合するときに接着剤が永久磁石の進行方向端面部に溜
まり、その溜まった接着剤がほとんどの接着剤を引きず
っていくので、永久磁石の進行方向端部以外の回転子ヨ
ークと永久磁石との隙間には接着剤があまり残らず、回
転子ヨークと永久磁石との間の接着強度が低下する状況
が発生していた。本発明は、このような問題を解消する
ためになされたもので、回転子ヨークと永久磁石との間
の接着強度を向上することができる永久磁石形回転子と
その製造方法を提供することを目的とするものである。However, such a conventional method of manufacturing a permanent magnet rotor has the following problems. In other words, the adhesive has the property of gathering where it has accumulated due to its own surface tension,
When the ring-shaped permanent magnet is fitted to the outer peripheral surface of the cylindrical rotor yoke, the adhesive is accumulated on the end face in the traveling direction of the permanent magnet, and the accumulated adhesive drags most of the adhesive. In the gap between the rotor yoke and the permanent magnet other than the end of the permanent magnet in the traveling direction, little adhesive remains in the gap between the rotor yoke and the permanent magnet. The present invention has been made in order to solve such a problem, and it is an object of the present invention to provide a permanent magnet type rotor capable of improving the adhesive strength between a rotor yoke and a permanent magnet, and a method of manufacturing the same. It is the purpose.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、円筒状の回転子ヨークの外周面上に、リ
ング状の永久磁石を軸方向から嵌合し、かつ前記回転子
ヨークと永久磁石との間を接着剤で接着固定した永久磁
石形回転子において、軸方向端部側の外周面上に周方向
に適宜長さ延びる接着剤挿入用の溝を形成した回転子ヨ
ークの外周面上に、前記リング状の永久磁石を嵌合固着
したものである。また円筒状の回転子ヨークの外周面上
に、リング状の永久磁石を軸方向から嵌合し、かつ前記
回転子ヨークと永久磁石との間を接着剤で接着固定する
永久磁石形回転子の製造方法において、前記回転子ヨー
クの軸方向端部側の外周面上に、周方向に適宜長さ延び
る溝を形成するとともに、前記溝の中に接着剤を回転子
ヨーク上から突出するように入れ、前記リング状の永久
磁石を、前記回転子ヨークの前記溝を形成した端部側か
ら嵌合し、前記接着剤を接着剤自身の表面張力を利用し
て回転子ヨーク上に引き出しながら嵌合していくように
したものである。In order to solve the above-mentioned problems, the present invention is directed to a method in which a ring-shaped permanent magnet is axially fitted on the outer peripheral surface of a cylindrical rotor yoke, In a permanent magnet type rotor in which an adhesive is fixed between a yoke and a permanent magnet, a rotor yoke having a groove for appropriately inserting an adhesive extending in a circumferential direction on an outer peripheral surface at an axial end side. The ring-shaped permanent magnet is fitted and fixed on the outer peripheral surface of the above. Also, a permanent magnet type rotor in which a ring-shaped permanent magnet is fitted on the outer peripheral surface of a cylindrical rotor yoke from the axial direction, and an adhesive is fixed between the rotor yoke and the permanent magnet with an adhesive. In the manufacturing method, a groove extending appropriately in the circumferential direction is formed on the outer peripheral surface on the axial end side of the rotor yoke, and an adhesive is projected into the groove from above the rotor yoke. Then, the ring-shaped permanent magnet is fitted from the end of the rotor yoke where the groove is formed, and the adhesive is fitted onto the rotor yoke while being pulled out onto the rotor yoke using the surface tension of the adhesive itself. It is intended to be combined.
【０００５】[0005]
【発明の実施の形態】以下、本発明の実施例を図に基づ
いて説明する。図１は本発明の実施例における永久磁石
形回転子の製造方法を示すもので、（ａ）は永久磁石を
回転子ヨークに嵌合している途中の状態を示す上半部の
側断面図、（ｂ）は永久磁石を回転子ヨークに嵌合した
状態を示す上半部の側断面図である。図において、１は
薄板状の鉄心を積層してなる円筒状の回転子ヨークで、
軸方向端部側の外周面上に、周方向に適宜長さ延びる
溝、たとえばリング状の溝２を形成している。前記溝２
は、その部分の複数枚の鉄心の外径寸法を小さくして形
成している。また、前記溝２の中には、接着剤３ａを回
転子ヨーク１の外周面上から突出するように入れてい
る。前記回転子ヨーク１の外周面上には、前記接着剤３
ａのみでなく、中央部から反対側に接着剤３ｂを盛り付
けている。４はリング状の永久磁石で、内径の寸法は、
前記回転子ヨーク１の外周面の外径寸法よりも僅かに大
きく設定されている。５は前記回転子ヨークの中央部に
嵌合固定している回転軸である。前記リング状の永久磁
石４を接着剤３で接着固定する場合は、前記回転子ヨー
ク１の外周面上の溝２の中に接着剤３を回転子ヨーク１
の外周面上から突出するように入れた状態で、前記リン
グ状の永久磁石４を、前記回転子ヨーク１の前記溝２を
形成した端部側から嵌合していく。なお、図ではわかり
やすくするために、回転子ヨーク１と永久磁石４との隙
間は大きく描いている。このようにすることにより、前
記永久磁石４を嵌合していくにつれて、前記溝２の中の
接着剤３が接着剤自身の表面張力によって前記永久磁石
４とともに前記溝２と反対側の回転子ヨーク１上に引き
出されていき、回転子ヨーク１の溝側の端部外周面上に
広がっていくことになる。また、接着剤３ｂは、永久磁
石４の進行方向端部に溜まり、ほとんどの接着剤を溝２
と反対側の端部に引きずっていき、回転子ヨーク１の反
溝側の端部外周面上に広がっていくことになる。これに
より、回転子ヨーク１の溝側の端部外周面上における永
久磁石４との接着は接着剤３ａが行い、回転子ヨーク１
の反溝側の端部外周面上における永久磁石４との接着は
接着剤３ｂが行うことになり、回転子ヨーク１の溝側端
部と反溝側端部の外周面上の両方において接着面積が広
くなり、回転子ヨーク１と永久磁石４との接着強度が向
上する。この場合、前記溝２から端部側は接着剤が付着
しないが、全体からみれば僅かなものであるので影響は
ない。支障がある場合は永久磁石４側の端部に接着剤３
を塗布しておくようにすればよい。永久磁石形回転子に
あっては、寸法が長く永久磁石４を軸方向に複数個並べ
る構成のものがあるが、この場合は、一番奥の永久磁石
４に対応する溝２から接着剤３ａを入れていき、永久磁
石４を嵌合した後に次の永久磁石４に対応する溝２に接
着剤３ａを入れていくようにする。永久磁石４を複数個
並べずに１個の永久磁石４が長い構成の場合は、回転子
ヨーク１上に複数本のリング状の溝２を形成することに
より接着面積を広くとることができる。また、反対に回
転子ヨーク１の長さが非常に短い構成のものもあるが、
この場合は、溝２内の接着剤３ａだけで回転子ヨーク１
上に接着剤３ａを塗布することができるので、前記回転
子ヨーク１の外周面上の中央部から反対側に接着剤３ｂ
を盛り付ける必要はない。なお、本発明においては、回
転子ヨーク１の外周面上に形成する溝２は、両側を鉄心
で囲ったものに限らず、端部側の鉄心の外径寸法を溝２
の外径と同じにして端部側をオープンにしたものでもよ
い。また、リング状に限らず、周方向に断続的に設ける
ようにしたものでもよい。さらにまた、前記回転子ヨー
ク１は、薄板状の鉄心を積層して形成したものに限ら
ず、ソリッド状に形成したものでもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show a method of manufacturing a permanent magnet rotor according to an embodiment of the present invention. FIG. 1A is a side sectional view of an upper half showing a state in which a permanent magnet is being fitted to a rotor yoke. (B) is a side sectional view of the upper half showing a state where the permanent magnet is fitted to the rotor yoke. In the figure, 1 is a cylindrical rotor yoke formed by laminating thin iron cores,
A groove, such as a ring-shaped groove 2, extending appropriately in the circumferential direction is formed on the outer peripheral surface on the axial end side. The groove 2
Are formed by reducing the outer diameter of the plurality of iron cores in that portion. An adhesive 3 a is inserted into the groove 2 so as to protrude from the outer peripheral surface of the rotor yoke 1. On the outer peripheral surface of the rotor yoke 1, the adhesive 3
In addition to a, the adhesive 3b is provided on the opposite side from the center. Reference numeral 4 denotes a ring-shaped permanent magnet whose inner diameter is
The outer diameter of the outer peripheral surface of the rotor yoke 1 is set slightly larger. Reference numeral 5 denotes a rotating shaft fitted and fixed to the center of the rotor yoke. When the ring-shaped permanent magnet 4 is bonded and fixed with an adhesive 3, the adhesive 3 is inserted into the groove 2 on the outer peripheral surface of the rotor yoke 1.
The ring-shaped permanent magnet 4 is fitted from the end of the rotor yoke 1 where the groove 2 is formed in a state of being inserted so as to protrude from the outer peripheral surface of the rotor yoke. In the drawing, the gap between the rotor yoke 1 and the permanent magnet 4 is shown large for easy understanding. In this way, as the permanent magnet 4 is fitted, the adhesive 3 in the groove 2 is brought into contact with the permanent magnet 4 by the surface tension of the adhesive itself and the rotor on the opposite side of the groove 2. The rotor yoke 1 is drawn out and spreads on the outer peripheral surface of the groove side end of the rotor yoke 1. The adhesive 3b collects at the end of the permanent magnet 4 in the traveling direction, and most of the adhesive is transferred to the groove 2.
And spread on the outer peripheral surface of the end of the rotor yoke 1 on the side opposite to the groove. As a result, the adhesive 3a adheres to the permanent magnet 4 on the outer peripheral surface of the groove-side end of the rotor yoke 1, and the rotor yoke 1
Is bonded to the permanent magnet 4 on the outer peripheral surface of the opposite end of the rotor yoke by the adhesive 3b. The area is increased, and the bonding strength between the rotor yoke 1 and the permanent magnet 4 is improved. In this case, the adhesive does not adhere from the groove 2 to the end portion side, but there is no influence because the adhesive is small as a whole. If there is any problem, apply adhesive 3 to the end on the permanent magnet 4 side.
May be applied beforehand. Some permanent magnet type rotors have a long dimension and a plurality of permanent magnets 4 arranged in the axial direction. In this case, the adhesive 3a is formed from the groove 2 corresponding to the innermost permanent magnet 4. After the permanent magnet 4 is fitted, the adhesive 3a is inserted into the groove 2 corresponding to the next permanent magnet 4. In the case where one permanent magnet 4 is long without arranging a plurality of permanent magnets 4, the bonding area can be widened by forming a plurality of ring-shaped grooves 2 on the rotor yoke 1. On the other hand, there is also a configuration in which the length of the rotor yoke 1 is very short,
In this case, the rotor yoke 1 is formed only by the adhesive 3a in the groove 2.
Since the adhesive 3a can be applied on the upper side, the adhesive 3b is applied from the central portion on the outer peripheral surface of the rotor yoke 1 to the opposite side.
There is no need to serve. In the present invention, the groove 2 formed on the outer peripheral surface of the rotor yoke 1 is not limited to the one whose both sides are surrounded by the iron core.
It may be the same as the outer diameter of the above, and the end side is open. Further, it is not limited to the ring shape, and may be provided intermittently in the circumferential direction. Furthermore, the rotor yoke 1 is not limited to one formed by laminating thin iron cores, but may be a solid one.
【０００６】[0006]
【発明の効果】以上述べたように、本発明によれば、回
転子ヨークの外周面上にリング状の永久磁石を嵌合する
際に、永久磁石の嵌合につれて回転子ヨークの外周面上
に形成した溝から接着剤が接着剤自身の表面張力により
回転子ヨークの外周面上に引き出されていくので、回転
子ヨークと永久磁石との接着面積が広くなり、回転子ヨ
ークと永久磁石との接着強度が向上する効果がある。As described above, according to the present invention, when a ring-shaped permanent magnet is fitted on the outer peripheral surface of the rotor yoke, the outer peripheral surface of the rotor yoke is fitted as the permanent magnet is fitted. Since the adhesive is drawn out from the groove formed on the outer peripheral surface of the rotor yoke by the surface tension of the adhesive itself, the bonding area between the rotor yoke and the permanent magnet increases, and the rotor yoke and the permanent magnet Has the effect of improving the adhesive strength of the resin.
【図１】 本発明の実施例における永久磁石形回転子の
製造方法を示すもので、（ａ）は永久磁石を回転子ヨー
クに嵌合している途中の状態を示す上半部の側断面図、
（ｂ）は永久磁石を回転子ヨークに嵌合した状態を示す
上半部の側断面図である。1A and 1B show a method of manufacturing a permanent magnet rotor according to an embodiment of the present invention. FIG. 1A is a side cross-sectional view of an upper half showing a state in which a permanent magnet is being fitted to a rotor yoke. Figure,
(B) is a side sectional view of the upper half showing a state where the permanent magnet is fitted to the rotor yoke.
１ 回転子ヨーク、 ２ 溝、 ３ａ、３ｂ 接着剤、 ４ 永久磁石、 ５ 回転軸 1 rotor yoke, 2 grooves, 3a, 3b adhesive, 4 permanent magnet, 5 rotating shaft
Claims (4)
ング状の永久磁石を軸方向から嵌合し、かつ前記回転子
ヨークと永久磁石との間を接着剤で接着固定した永久磁
石形回転子において、 軸方向端部側の外周面上に周方向に適宜長さ延びる接着
剤挿入用の溝を形成した回転子ヨークの外周面上に、前
記リング状の永久磁石を嵌合固着したことを特徴とする
永久磁石形回転子。1. A permanent magnet in which a ring-shaped permanent magnet is axially fitted on the outer peripheral surface of a cylindrical rotor yoke, and the rotor yoke and the permanent magnet are bonded and fixed with an adhesive. The ring-shaped permanent magnet is fitted and fixed on an outer peripheral surface of a rotor yoke in which a groove for inserting an adhesive extending appropriately in the circumferential direction is formed on an outer peripheral surface on an axial end portion side. A permanent magnet type rotor characterized by the following.
ング状の永久磁石を軸方向から嵌合し、かつ前記回転子
ヨークと永久磁石との間を接着剤で接着固定する永久磁
石形回転子の製造方法において、 前記回転子ヨークの軸方向端部側の外周面上に、周方向
に適宜長さ延びる溝を形成するとともに、前記溝の中に
接着剤を回転子ヨーク上から突出するように入れ、前記
リング状の永久磁石を、前記回転子ヨークの前記溝を形
成した端部側から嵌合し、前記接着剤を接着剤自身の表
面張力を利用して回転子ヨーク上に引き出しながら嵌合
していくことを特徴とする永久磁石形回転子の製造方
法。2. A permanent magnet in which a ring-shaped permanent magnet is axially fitted on the outer peripheral surface of a cylindrical rotor yoke, and the rotor yoke and the permanent magnet are bonded and fixed with an adhesive. In the method for manufacturing a rotor, a groove extending appropriately in the circumferential direction is formed on the outer peripheral surface on the axial end side of the rotor yoke, and an adhesive is filled in the groove from above the rotor yoke. The ring-shaped permanent magnet is fitted from the end of the rotor yoke where the groove is formed, and the adhesive is placed on the rotor yoke by utilizing the surface tension of the adhesive itself. A method of manufacturing a permanent magnet type rotor, wherein the rotor is fitted while being pulled out.
に、周方向の全周に渡ってリング状に形成されているこ
とを特徴とする請求項１記載の永久磁石形回転子の製造
方法3. The permanent magnet rotor according to claim 1, wherein the groove is formed in a ring shape on the outer peripheral surface of the rotor yoke over the entire circumference in the circumferential direction. Method
に、周方向に断続的に形成されていることを特徴とする
請求項１記載の永久磁石形回転子の製造方法4. The method for manufacturing a permanent magnet rotor according to claim 1, wherein said groove is formed intermittently in a circumferential direction on an outer peripheral surface of said rotor yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36156499A JP2001178041A (en) | 1999-12-20 | 1999-12-20 | Permanent-magnet rotor and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36156499A JP2001178041A (en) | 1999-12-20 | 1999-12-20 | Permanent-magnet rotor and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001178041A true JP2001178041A (en) | 2001-06-29 |
Family
ID=18474087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36156499A Pending JP2001178041A (en) | 1999-12-20 | 1999-12-20 | Permanent-magnet rotor and manufacturing method therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001178041A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016093051A1 (en) * | 2014-12-08 | 2016-06-16 | マブチモーター株式会社 | Permanent magnet securing structure, motor, and permanent magnet securing method |
| CN108599484A (en) * | 2018-05-23 | 2018-09-28 | 广东伊莱斯电机有限公司 | A kind of production method and its correspondence tooling of rotor |
| WO2019155670A1 (en) * | 2018-02-09 | 2019-08-15 | 株式会社ミツバ | Brushless motor and method for producing same |
-
1999
- 1999-12-20 JP JP36156499A patent/JP2001178041A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016093051A1 (en) * | 2014-12-08 | 2016-06-16 | マブチモーター株式会社 | Permanent magnet securing structure, motor, and permanent magnet securing method |
| JP2016111851A (en) * | 2014-12-08 | 2016-06-20 | マブチモーター株式会社 | Fixing structure of permanent magnet, motor, and fixing method of permanent magnet |
| CN106575910A (en) * | 2014-12-08 | 2017-04-19 | 马渊马达株式会社 | Permanent magnet securing structure, motor, and permanent magnet securing method |
| US10367383B2 (en) | 2014-12-08 | 2019-07-30 | Mabuchi Motor Co., Ltd. | Structure for fixing permanent magnet and motor and method of fixing permanent magnet |
| DE112015005513B4 (en) | 2014-12-08 | 2024-01-18 | Mabuchi Motor Co., Ltd. | PERMANENT MAGNET MOUNTING STRUCTURE, MOTOR AND PERMANENT MAGNET MOUNTING METHOD |
| WO2019155670A1 (en) * | 2018-02-09 | 2019-08-15 | 株式会社ミツバ | Brushless motor and method for producing same |
| US11251668B2 (en) | 2018-02-09 | 2022-02-15 | Mitsuba Corporation | Brushless motor and method for producing same |
| CN108599484A (en) * | 2018-05-23 | 2018-09-28 | 广东伊莱斯电机有限公司 | A kind of production method and its correspondence tooling of rotor |
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