JPS60190153A - Rotor of commutatorless motor - Google Patents
Rotor of commutatorless motorInfo
- Publication number
- JPS60190153A JPS60190153A JP59045825A JP4582584A JPS60190153A JP S60190153 A JPS60190153 A JP S60190153A JP 59045825 A JP59045825 A JP 59045825A JP 4582584 A JP4582584 A JP 4582584A JP S60190153 A JPS60190153 A JP S60190153A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- yoke
- rotor yoke
- permanent magnet
- adhesive
- 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
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)
Abstract
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
の無整流子モータに関し、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。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a commutatorless motor mainly for driving an indoor fan of an air conditioner, etc., and in particular to a rotating motor with a permanent magnet bonded to the outer periphery of a rotor yoke. It's about children.
従来例の構成とその問題点
無整流子モータの回転子は、動力全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管の
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 configuration and its problems The rotor of a commutatorless motor usually consists of a shaft that transmits all the power, a rotor yoke fixed to this shaft, and a permanent magnet fixed to this rotor yoke. be. As a method of fixing the permanent magnet to the rotor yoke, there is a so-called press-fit tube construction method in which the outer diameter of the rotor yoke is made larger than the inner diameter of the permanent magnet. This method cannot be used practically because the magnet has little elongation and cracks occur. Therefore, the permanent magnet and rotor yoke are usually bonded together. Usually, this rotor yoke is composed of a laminated iron core or a sintered iron core, and its main shape is cylindrical.
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。In adhering the permanent magnet and the rotor yoke, in order to maximize the adhesion strength of the adhesive, it is necessary to provide an appropriate gap, and the dimension thereof is usually 30 to 100 μm. However, at this time, the gap between the permanent magnet and the rotor yoke is desired to be as small as possible in consideration of the dynamic balance during rotation, which conflicts with the above-mentioned adhesive effect.
寸だ、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＋ｄ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。It is an extremely difficult task to provide an appropriate bonding gap and to make the permanent magnet and rotor yoke concentric, that is, to perform bonding with no deviation in the circumferential direction of the bonding gap. This method cannot be adopted as a mass production method.
一方、接着スキマを前述のダイナミックバランスに悪影
響を与えない範囲捷で小さくすると、円筒磁石を用いる
場合、永久磁石接着後たは、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。On the other hand, if the adhesive gap is reduced within a range that does not adversely affect the dynamic balance described above, when cylindrical magnets are used, most of the adhesive applied to the outer surface of the rotor yoke will be absorbed after the permanent magnet is bonded or when the two are inserted. , which drastically reduces the adhesive effect and causes large variations in adhesive strength.
従来は接着力を確保する為の適正スキマ全段けて接着を
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
等不具合点の原因になっていた。Conventionally, adhesives are bonded across all stages with appropriate gaps to ensure adhesive strength, so it is necessary to maintain a dynamic balance after bonding, and at this time, the cutting powder from the rotor yoke that is generated remains on the permanent magnet surface. This could lead to malfunctions such as motor rotation failure.
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。Purpose of the Invention The present invention has been made in view of the above-mentioned conventional problems.
The present invention aims to provide a rotor in which the adhesive strength between the rotor yoke and the permanent magnets is increased and the dynamic balance is maintained in a good state.
発明の構成
本発明は、回転子ヨークの外周に凹凸を設け１、凹部に
適度の厚さを有する接着剤を介在させることにより接着
強度を増大させ、凸部外径と円筒状永久磁石の内径との
スキマ寸法を極小にすることにより回転子のダイナミッ
クバランスを保たせようとしたものである。Structure of the Invention The present invention provides unevenness on the outer periphery of the rotor yoke (1) and interposes an adhesive having an appropriate thickness in the recessed portion to increase adhesive strength. This attempt was made to maintain the dynamic balance of the rotor by minimizing the gap between the rotor and the rotor.
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 will be described in which a laminated iron core is used for a rotor yoke.
第１図は、回転子の横断面図である。第２図は第１図の
Ａ−０−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 longitudinal sectional view taken along line A-0-B in FIG. 1. 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
に設けた凸部２ａにより微小スキマ（０，０１〜０．０
３ ａｍ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はその中央全貫通す
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４ＩＩ′ｉ、、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 small gap (0.01 to 0.0
3 am) and is held concentrically with the rotor yoke 2. On the other hand, the rotor yoke 2 is integrally formed concentrically with a shaft 3 that completely passes through the center thereof by press fitting. Here, most of the adhesive 4II'i 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、本発明の他の実施例による回転子ヨーク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が設けである。FIG. 4 is a perspective view of a rotor yoke 2 according to another embodiment of the invention. The outer periphery of the rotor yoke 2 is provided with unevenness 2a, 2b having different widths in the axial direction.
この形状のものは、回転子ヨーク２全焼結金属で構成す
る場合に有効であり、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丑で
浸透が可能となる。This shape is effective when the rotor yoke 2 is made entirely of sintered metal, and when a cylindrical permanent magnet is inserted from the wide side of the recess 2b, the coating is applied to the outer surface of the rotor yoke or the inner surface of the permanent magnet. As the adhesive is inserted, the pressure increases in the recess 2b, and it becomes possible to penetrate minute portions of the permanent magnet and the rotor yoke.
発明の詳細
な説明したように、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だねるため回転子のグイナミソクノ
くランスは保たれ、永久磁石接着後のバランス取りの工
程（はなくなる。As described in detail, the present invention provides unevenness on the outer periphery of the rotor yoke to increase the adhesive strength with the permanent magnets.
In addition, the concentricity of the rotor yoke and permanent magnet is maintained due to the close contact between the convex part and the inner surface of the permanent magnet, so the rotor's balance is maintained, and the balancing process after the permanent magnet is attached is eliminated.
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。Therefore, a stable mass production process can be established, which is highly effective in streamlining the manufacturing 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−０−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。
代卯人の氏名 弁理士 中 尾 敏 男 ほか１名第３
０
−FIG. 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 line A-0-B in FIG. 1, FIG. 3 is a perspective view of the rotor, and FIG. FIG. 3 is a perspective view of a rotor yoke according to another embodiment. 1...Permanent magnet, 2...Rotor yoke, 2a...
...Rotor yoke convex portion, 2b...Rotor yoke concave portion, 3...Shaft, 4...Adhesive. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
0 -
Claims (3)
石の磁束通路となる回転子ヨークと全備え、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、この回転
子ヨークの外周に前記回転子磁石全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 configured in a cylindrical shape and a rotor yoke serving as a magnetic flux path of the rotor magnet are fully equipped, and an uneven part is formed in the circumferential direction on the outer peripheral surface of the rotor yoke, and the rotation A rotor of a commutatorless motor in which the rotor magnet is fixed to the outer periphery of a child yoke through an adhesive.
略１：１である特許請求の範囲第１項記載の無整流子モ
ータの回転子。(2) A rotor for a commutatorless motor according to claim 1, wherein the ratio of lengths of concave portions to convex portions on the outer peripheral surface of the rotor yoke is approximately 1:1.
面の凹凸の巾の比を軸方向の一方の端面と他方の端面の
とで異ならせた特許請求の範囲第１項記載の無整流子モ
ータの回転子。(3) The rotor yoke is constituted by a sintered iron core, and the width ratio of the unevenness on the outer peripheral surface is made different between one end face in the axial direction and the other end face in the axial direction. Commutator motor rotor.
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 true JPS60190153A (en) | 1985-09-27 |
| JPH0744795B2 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) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH027841A (en) * | 1988-01-16 | 1990-01-11 | Fuji Elelctrochem Co Ltd | Permanent magnet rotor |
| JPH03104051U (en) * | 1990-02-07 | 1991-10-29 | ||
| JPH065350U (en) * | 1992-06-25 | 1994-01-21 | オークマ株式会社 | Electric motor rotor |
| EP1720235A3 (en) * | 2001-12-21 | 2007-05-02 | Johnson Electric S.A. | Brushless D.C. motor |
| WO2009056180A2 (en) * | 2007-10-31 | 2009-05-07 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Electric motor |
| JP2013188037A (en) * | 2012-03-09 | 2013-09-19 | Hitachi Appliances Inc | Rotor for electric motor, electric motor, and washing machine |
| CN110291697A (en) * | 2017-02-10 | 2019-09-27 | 美蓓亚三美株式会社 | The manufacturing method of rotor for electromotor, motor and rotor for electromotor |
| DE102013002181B4 (en) * | 2012-02-15 | 2021-03-25 | Denso Corporation | Rotor and motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54103516U (en) * | 1977-12-29 | 1979-07-21 |
-
1984
- 1984-03-09 JP JP59045825A patent/JPH0744795B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54103516U (en) * | 1977-12-29 | 1979-07-21 |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH027841A (en) * | 1988-01-16 | 1990-01-11 | Fuji Elelctrochem Co Ltd | Permanent magnet rotor |
| JPH03104051U (en) * | 1990-02-07 | 1991-10-29 | ||
| JPH065350U (en) * | 1992-06-25 | 1994-01-21 | オークマ株式会社 | Electric motor rotor |
| EP1720235A3 (en) * | 2001-12-21 | 2007-05-02 | Johnson Electric S.A. | Brushless D.C. motor |
| US7394174B2 (en) | 2001-12-21 | 2008-07-01 | Johnson Electric S.A. | Brushless D.C. motor |
| JP2009033968A (en) * | 2001-12-21 | 2009-02-12 | Johnson Electric Sa | Brushless dc motor |
| WO2009056180A2 (en) * | 2007-10-31 | 2009-05-07 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Electric motor |
| WO2009056180A3 (en) * | 2007-10-31 | 2009-09-03 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Electric motor |
| US8772993B2 (en) | 2007-10-31 | 2014-07-08 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Electric motor with adhesively bonded ring magnet |
| DE102013002181B4 (en) * | 2012-02-15 | 2021-03-25 | Denso Corporation | Rotor and motor |
| JP2013188037A (en) * | 2012-03-09 | 2013-09-19 | Hitachi Appliances Inc | Rotor for electric motor, electric motor, and washing machine |
| CN110291697A (en) * | 2017-02-10 | 2019-09-27 | 美蓓亚三美株式会社 | The manufacturing method of rotor for electromotor, motor and rotor for electromotor |
| US11218042B2 (en) | 2017-02-10 | 2022-01-04 | Minebea Mitsumi Inc. | Rotor for motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744795B2 (en) | 1995-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |