JPH0744795B2 - Non-commutator motor rotor - Google Patents
Non-commutator motor rotorInfo
- Publication number
- JPH0744795B2 JPH0744795B2 JP59045825A JP4582584A JPH0744795B2 JP H0744795 B2 JPH0744795 B2 JP H0744795B2 JP 59045825 A JP59045825 A JP 59045825A JP 4582584 A JP4582584 A JP 4582584A JP H0744795 B2 JPH0744795 B2 JP H0744795B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotor yoke
- permanent magnet
- adhesive
- yoke
- 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.)
- Expired - Lifetime
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、主にエアコンの室内用ファン等を駆動する為
の無整流子モータを関し、特に回転子ヨークの外周に永
久磁石を接着してなる回転子に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a non-commutator motor for driving an indoor fan of an air conditioner, and in particular, a permanent magnet is bonded to the outer circumference of a rotor yoke. It is about the rotor.
従来例の構成とその問題点 無整流子モータの回転子は、動力を伝達する軸とこの軸
に固定された回転子ヨークと、この回転子ヨークに固定
された永久磁石よりなるのが普通である。永久磁石を回
転子ヨークと固定する方法としては、永久磁石の内径よ
りも回転子ヨークの外径を大きくするいわゆる圧入等の
工法は、多量に利用されるフェライト等の焼結磁石を用
いる場合、磁石に伸びが少なく割れが発生する為実用上
採用不可能な方法である。その為、永久磁石と回転子ヨ
ークは通常接着をされる。通常、この回転子ヨークは積
層鉄心あるいは焼結鉄心で構成され円柱状が主な形状で
ある。Conventional example configuration and its problems The rotor of a non-commutator motor is usually composed of a shaft for transmitting power, a rotor yoke fixed to this shaft, and a permanent magnet fixed to this rotor yoke. is there. As a method of fixing the permanent magnet to the rotor yoke, a method such as press-fitting in which the outer diameter of the rotor yoke is larger than the inner diameter of the permanent magnet is a method of using a sintered magnet such as ferrite, which is used in large quantities, This is a method that cannot be practically used because the magnet has little elongation and cracks occur. Therefore, the permanent magnet and the rotor yoke are usually bonded. Usually, this rotor yoke is composed of a laminated iron core or a sintered iron core, and has a cylindrical shape as a main shape.
永久磁石と回転子ヨークとの接着においては、接着剤の
接着強大を最大限に発揮させるためには適正なスキマを
設ける必要があり、その寸法は通常30〜100μｍであ
る。しかしこの時、永久磁石と回転子ヨークとのスキマ
は、回転時のダイナミックバランスを考えると、できる
だけ小さい事が要望され前述の接着効果と相反する事に
なる。また、適正接着スキマを設けてかつ、永久磁石と
回転子ヨークとを同心状にして、即ち、接着スキマの円
周方向偏差をなくした状態で接着を行うことは極めて困
難な作業であり、量産工法としては採り得ないものであ
る。一方、接着スキマを前述のダイナミックバランスに
悪影響を与えない範囲まで小さくすると、円筒磁石を用
いる場合、永久磁石内面または、回転子ヨーク外面に塗
布した接着剤はその大半が両者の挿入時に、しごき出さ
れて接着効果を激減させ、また接着力にも多大なバラツ
キを与える。In adhering the permanent magnet and the rotor yoke, it is necessary to provide an appropriate gap in order to maximize the adhesive strength of the adhesive, and the size thereof is usually 30 to 100 μm. However, at this time, the clearance between the permanent magnet and the rotor yoke is required to be as small as possible in consideration of the dynamic balance during rotation, which is contrary to the above-described adhesive effect. In addition, it is extremely difficult to perform bonding by providing a proper bonding gap and making the permanent magnet and the rotor yoke concentric, that is, in a state where the circumferential deviation of the bonding gap is eliminated. It cannot be adopted as a construction method. On the other hand, if the adhesion gap is reduced to a range that does not adversely affect the dynamic balance described above, when using a cylindrical magnet, most of the adhesive applied to the inner surface of the permanent magnet or the outer surface of the rotor yoke is squeezed out when both are inserted. As a result, the adhesive effect is drastically reduced, and the adhesive strength is greatly varied.
従来は接着力を確保する為の適正スキマを設けて接着を
行なっているので、接着後にダイナミックバランスをと
る必要があり、この際、発生する回転子ヨークの切削粉
が永久磁石面に残留する恐れがあり、モータの回転不良
等不具合の原因になっていた。Conventionally, since a proper gap is provided to secure the adhesive force to perform the adhesion, it is necessary to maintain a dynamic balance after the adhesion. At this time, the cutting powder generated in the rotor yoke may remain on the permanent magnet surface. Which is a cause of problems such as poor rotation of the motor.
発明の目的 本発明は、上記従来の問題点に鑑みてなされたもので、
回転子ヨークと永久磁石の接着強度を増大させ、かつダ
イナミックバランスを良好な状態に保った回転子を提供
しようとするものである。OBJECT OF THE INVENTION The present invention has been made in view of the above conventional problems,
It is an object of the present invention to provide a rotor in which the bonding strength between the rotor yoke and the permanent magnet is increased and the dynamic balance is maintained in a good state.
発明の構成 本発明は、円筒状に構成された回転子磁石と、前記回転
子磁石の磁束通路となる回転子ヨークとを備え、前記回
転子ヨークの外周面に円周方向に凹凸部を形成し、この
凹凸部の巾の比を軸方向の一方の端面と他方の端面とで
異ならせ、前記回転子ヨークの外周に前記回転子磁石を
接着剤を介して固定してなるもので、凹部に適度の厚さ
の接着剤を介在させることができるとともに回転子磁石
と回転子ヨークとの微少な部分にまで接着剤を浸透させ
ることができる。Configuration of the Invention The present invention includes a rotor magnet configured in a cylindrical shape and a rotor yoke that serves as a magnetic flux path of the rotor magnet, and an uneven portion is formed in a circumferential direction on an outer peripheral surface of the rotor yoke. However, the width ratio of the concavo-convex portion is made different between the one end face and the other end face in the axial direction, and the rotor magnet is fixed to the outer periphery of the rotor yoke with an adhesive. In addition, it is possible to interpose an adhesive having an appropriate thickness, and it is possible to penetrate the adhesive even to a minute portion between the rotor magnet and the rotor yoke.
実施例の説明 本発明の一実施例として、積層鉄心を回転子ヨークに用
いた場合について説明する。Description of Embodiments As an embodiment of the present invention, a case where a laminated iron core is used for a rotor yoke will be described.
第１図は、回転子の横断面図である。第２図は第１図の
Ａ−Ｏ−Ｂ線による縦断面図である。第３図は、回転子
の斜視図である。FIG. 1 is a cross-sectional view of the rotor. FIG. 2 is a vertical sectional view taken along the line A-O-B in FIG. FIG. 3 is a perspective view of the rotor.
第１図において、永久磁石１は回転子ヨーク２の外周面
に設けた凹部2aにより微小スキマ（0.01〜0.03mm程度）
を有して回転子ヨーク２と同心状に保持されている。一
方、回転子ヨーク２はその中央を貫通する軸３によって
圧入によりこれも同心状に一体的に構成されている。こ
こで、回転子ヨーク２と永久磁石１との固着を行なう為
の接着剤４は、その大半を回転子ヨーク２の凹部2bに保
持している。In FIG. 1, the permanent magnet 1 has a minute clearance (about 0.01 to 0.03 mm) due to the concave portion 2a provided on the outer peripheral surface of the rotor yoke 2.
And is held concentrically with the rotor yoke 2. On the other hand, the rotor yoke 2 is also integrally formed concentrically with a shaft 3 penetrating the center thereof by press fitting. Here, most of the adhesive 4 for fixing the rotor yoke 2 and the permanent magnet 1 is held in the recess 2b of the rotor yoke 2.
第４図は、回転子ヨーク２の斜視図である。回転子ヨー
ク２の外周には、軸方向に幅の異なる凹凸2a,2bが設け
てある。この形状により、凹部2bの幅の広い側から円筒
状永久磁石を挿入すると、回転子ヨーク外面または、永
久磁石内面に塗布した接着剤は挿入に従って凹部2b内で
増圧され、永久磁石と回転子ヨークの微少な部分にまで
浸透が可能となる。FIG. 4 is a perspective view of the rotor yoke 2. On the outer circumference of the rotor yoke 2, irregularities 2a and 2b having different widths in the axial direction are provided. With this shape, when the cylindrical permanent magnet is inserted from the wide side of the recess 2b, the adhesive applied to the outer surface of the rotor yoke or the inner surface of the permanent magnet is increased in pressure in the recess 2b as it is inserted, and the permanent magnet and the rotor. Permeation is possible even in the minute part of the yoke.
発明の効果 以上説明したように、本発明は回転子ヨークの外周に凹
凸を設けることにより、永久磁石との接着強度を増大
し、また凸部と永久磁石内面の密接により回転子ヨーク
と永久磁石の同心性が保たれるため回転子のダイナミッ
クバランスは保たれ、永久磁石接着後のバランス取りの
工程はなくなる。従って、安定した量産工程を設けるこ
とができ製造ラインの合理化に多大な効果を発揮する。EFFECTS OF THE INVENTION As described above, according to the present invention, the unevenness is provided on the outer circumference of the rotor yoke to increase the adhesive strength between the rotor yoke and the permanent magnet. Since the concentricity of the rotor is maintained, the dynamic balance of the rotor is maintained, and the balancing process after bonding the permanent magnets is eliminated. Therefore, a stable mass production process can be provided and a great effect is exerted on the rationalization of the production line.
第１図は本発明の実施例の回転子の横断面図、第２図は
第１図のＡ−Ｏ−Ｂ線による縦断面図、第３図は同回転
子の斜視図、第４図は他の実施例の回転子ヨークの斜視
図である。 １……永久磁石、２……回転子ヨーク、2a……回転子ヨ
ーク凸部、2b……回転子ヨーク凹部、３……軸、４……
接着剤。1 is a cross-sectional view of a rotor according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view taken along the line A-O-B in FIG. 1, FIG. 3 is a perspective view of the rotor, and FIG. FIG. 6 is a perspective view of a rotor yoke of another embodiment. 1 ... Permanent magnet, 2 ... Rotor yoke, 2a ... Rotor yoke protrusion, 2b ... Rotor yoke recess, 3 ... Shaft, 4 ...
adhesive.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 行成 啓三 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 実開 昭54−103516（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keizo Yukinari 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References
Claims (1)
転子磁石の磁束通路となる回転子ヨークとを備え、前記
回転子ヨークの外周面に円周方向に凹凸部を形成し、こ
の凹凸部の巾の比を軸方向の一方の端面と他方の端面と
で異ならせ、前記回転子ヨークの外周に前記回転子磁石
を接着剤を介して固定してなる無整流子モータの回転
子。1. A rotor magnet having a cylindrical shape, and a rotor yoke serving as a magnetic flux path of the rotor magnet, wherein an outer peripheral surface of the rotor yoke is provided with an uneven portion in a circumferential direction. Rotation of a non-commutator motor in which the width ratio of the uneven portion is made different between one end face and the other end face in the axial direction, and the rotor magnet is fixed to the outer periphery of the rotor yoke with an adhesive. Child.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59045825A JPH0744795B2 (en) | 1984-03-09 | 1984-03-09 | Non-commutator motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59045825A JPH0744795B2 (en) | 1984-03-09 | 1984-03-09 | Non-commutator motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60190153A JPS60190153A (en) | 1985-09-27 |
| JPH0744795B2 true JPH0744795B2 (en) | 1995-05-15 |
Family
ID=12730018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59045825A Expired - Lifetime JPH0744795B2 (en) | 1984-03-09 | 1984-03-09 | Non-commutator motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744795B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2767114B2 (en) * | 1988-01-16 | 1998-06-18 | 富士電気化学株式会社 | Permanent magnet rotor |
| JPH03104051U (en) * | 1990-02-07 | 1991-10-29 | ||
| JP2552595Y2 (en) * | 1992-06-25 | 1997-10-29 | オークマ株式会社 | Motor rotor |
| GB0130602D0 (en) | 2001-12-21 | 2002-02-06 | Johnson Electric Sa | Brushless D.C. motor |
| WO2009056180A2 (en) * | 2007-10-31 | 2009-05-07 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Electric motor |
| DE102013002181B4 (en) * | 2012-02-15 | 2021-03-25 | Denso Corporation | Rotor and motor |
| JP6035596B2 (en) * | 2012-03-09 | 2016-11-30 | 日立アプライアンス株式会社 | Electric motor rotor, electric motor and washing machine |
| US11218042B2 (en) | 2017-02-10 | 2022-01-04 | Minebea Mitsumi Inc. | Rotor for motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918852Y2 (en) * | 1977-12-29 | 1984-05-31 | 株式会社精工舎 | motor rotor |
-
1984
- 1984-03-09 JP JP59045825A patent/JPH0744795B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60190153A (en) | 1985-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0824413B2 (en) | Rotor with permanent magnet | |
| US3772546A (en) | Dynamoelectric machine with ceramic permanent magnets | |
| JPH0744795B2 (en) | Non-commutator motor rotor | |
| JP2550980Y2 (en) | Motor rotor | |
| JPH03155347A (en) | Rotor of reluctance motor | |
| JPS6392246A (en) | Magnet rotor | |
| JPH0984283A (en) | Structure for arranging rotor magnet to rotor | |
| JP2002136091A (en) | Brushless dc motor | |
| JP3451396B2 (en) | Stepping motor | |
| JPH01264554A (en) | Manufacture of permanent magnet type dc machine | |
| JPH06205572A (en) | Inner rotor type brushless motor | |
| JPS6135152A (en) | Stepping motor | |
| JPH0681439B2 (en) | Radial type rotor of synchronous motor | |
| JPS5936140Y2 (en) | motor | |
| JP2539932Y2 (en) | Magnetized yoke | |
| JP2576155Y2 (en) | Brushless motor | |
| JPH08182233A (en) | Rotor for motor | |
| JP2019122084A (en) | Rotor for motor and motor | |
| JPH023381B2 (en) | ||
| JPH0154951B2 (en) | ||
| JPH0683556B2 (en) | Flat motor | |
| JPH06253479A (en) | Stator core | |
| JPH0453184Y2 (en) | ||
| JP3517550B2 (en) | motor | |
| JPS62233054A (en) | Motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |