JPH0832142B2 - Brushless motor rotor manufacturing method - Google Patents
Brushless motor rotor manufacturing methodInfo
- Publication number
- JPH0832142B2 JPH0832142B2 JP61171208A JP17120886A JPH0832142B2 JP H0832142 B2 JPH0832142 B2 JP H0832142B2 JP 61171208 A JP61171208 A JP 61171208A JP 17120886 A JP17120886 A JP 17120886A JP H0832142 B2 JPH0832142 B2 JP H0832142B2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- rotor yoke
- magnet piece
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Brushless Motors (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 本発明は家庭用エアコン等の送風ファン駆動源として
用いられる無刷子電動機の回転子に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of a brushless electric motor used as a blower fan drive source for a home air conditioner or the like.
従来の技術 近年家庭用エアコン等の空調機器においては、コンプ
レッサの能力制御をする事が主流になりつつある。そし
てこれに対応して熱交換器への送風量も巾広く多段階に
調整する事が要求され、これら要望を満たすものとして
従来から使われてきたファン駆動源としての誘導電動機
に代わって、速度調整の容易な無刷子電動機を直流電源
で運転する方式が採用されつつある。2. Description of the Related Art In recent years, in air conditioners such as home air conditioners, it is becoming mainstream to control the capacity of a compressor. Correspondingly, it is also required to adjust the amount of air blown to the heat exchanger in a wide range and in multiple stages. Instead of the induction motor as a fan drive source that has been conventionally used to satisfy these demands, A method of operating a brushless motor, which is easy to adjust, with a DC power source is being adopted.
無刷子電動機は通常その回転子が永久磁石で構成され
ているが、永久磁石を回転子とする場合、回転子内転形
の電動機においては次のような方法を採ることが多い。The rotor of a brushless electric motor is usually composed of a permanent magnet, but when the permanent magnet is used as a rotor, the following method is often adopted in a rotor internal rotation type electric motor.
1.永久磁石が環状に成形されており、これと軸とを直接
固着するもの。1. A permanent magnet is formed in a ring shape and the shaft and shaft are directly fixed.
2.永久磁石が環状に成形されており、これと回転子ヨー
クを固着し、回転子ヨークと軸を固着するもの。2. A permanent magnet is formed in a ring shape, and this is fixed to the rotor yoke, and the rotor yoke and shaft are fixed.
3.永久磁石が弧状の磁石片として成形されており、軸と
直接固着されているもの。3. A permanent magnet is formed as an arc-shaped magnet piece and is fixed directly to the shaft.
4.永久磁石が弧状の磁石片として成形されており、回転
子ヨーク上に固着され、回転子ヨークと軸が固着されて
いるもの。4. Permanent magnets are formed as arc-shaped magnet pieces, fixed on the rotor yoke, and the rotor yoke and shaft are fixed.
本発明は、上記第４の構成に関するものである。 The present invention relates to the above-mentioned fourth configuration.
従来、第４の方法による例としては通常次の様な構成
がとられていた。Conventionally, as an example of the fourth method, the following configuration has been usually adopted.
円環状の回転子ヨーク外径面と弧状磁石片の内径面の
双方又は一方の面に接着剤を塗布し、両者を貼り合わせ
た後、固定して接着剤が硬化するまで保持する。An adhesive is applied to both or one of the outer diameter surface of the annular rotor yoke and the inner diameter surface of the arc-shaped magnet piece, and the both are bonded and then fixed and held until the adhesive hardens.
発明が解決しようとする問題点 しかしながら、上記構成によると、次のような欠点が
あった。Problems to be Solved by the Invention However, the above-described configuration has the following drawbacks.
1.接着剤の塗布をする工程が必要になる。1. A process of applying adhesive is required.
2.通常、塗布をして使用する接着剤は、硬化までに時間
が必要でありかつ、加熱を要するものが多く、その間、
磁石片と回転子ヨークを保持し続けなければならず、治
具、設備が多く必要となる。2.Usually, many adhesives that are applied and used require time to cure and require heating.
It is necessary to keep holding the magnet piece and the rotor yoke, which requires a lot of jigs and equipment.
3.液状で浸透しやすいタイプの接着剤を使用する場合
は、回転子ヨーク外径と磁石片内径は基準寸法において
等しく作られているで、両者を合わせた場合に両者間に
はスキ間がなく、液状の接着剤でもほとんど浸透しな
い。3. When using a liquid type adhesive that easily penetrates, the outer diameter of the rotor yoke and the inner diameter of the magnet piece are made equal in the reference dimension.Therefore, when both are combined, there is a gap between them. None, it hardly penetrates even with liquid adhesive.
問題点を解決するための手段 本発明は上記問題点を解決する為に次の様な手段を講
ずる。すなわち、回転子ヨークの外径面に軸方向に複数
の凹部を形成し、磁石片を回転子ヨークに当接する際
に、少なくとも、その一方の周方向端部が回転子ヨーク
外径面上に設けた凸部の中央部に位置する様に配置し固
着するものである。Means for Solving the Problems The present invention takes the following means in order to solve the above problems. That is, when a plurality of recesses are formed in the outer diameter surface of the rotor yoke in the axial direction, and at least one circumferential end of the magnet piece is brought into contact with the rotor yoke, at least one of the circumferential end portions is located on the outer surface of the rotor yoke. It is arranged and fixed so as to be located at the center of the provided convex portion.
作用 以上の如き手段を講ずる事により、回転子ヨークと磁
石片を固着する際に、液状の接着剤を用いる事が可能に
なると共に、磁石片を回転子ヨークに当接する際の周方
向の傾きも防止できる。By taking the above measures, it becomes possible to use a liquid adhesive when fixing the rotor yoke and the magnet piece, and at the same time, tilt in the circumferential direction when the magnet piece contacts the rotor yoke. Can also be prevented.
実施例 以下本発明の実施例を図面に基づき説明する。第１図
は本発明の回転子を用いた無刷子電動機の組立状態斜視
図である。第２図は同回転子の正面図である。共に磁石
片の弧状角は90°であり回転子ヨーク外径面の凹部の発
生ピッチ角は60°の場合を示している。Embodiments Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an assembled state of a brushless electric motor using the rotor of the present invention. FIG. 2 is a front view of the rotor. In both cases, the arc-shaped angle of the magnet piece is 90 °, and the generated pitch angle of the recesses on the outer surface of the rotor yoke is 60 °.
図において、回転子ヨーク１の外径面には60°毎に発
生する微小凹部1bが形成され、凸部と凹部の巾はほぼ等
しくなっている。永久磁石片２はその弧状角が90°に形
成され、すなわち４分割磁石となっている。In the figure, minute concave portions 1b are formed on the outer diameter surface of the rotor yoke 1 every 60 °, and the widths of the convex portions and the concave portions are almost equal. The permanent magnet piece 2 has an arcuate angle of 90 °, that is, a four-divided magnet.
そして、磁石片２はその周方向の端部2aの一方が凸部
1aの上の中央部に常に位置する様に配置されている。The magnet piece 2 has a convex portion on one end 2a in the circumferential direction.
It is placed so that it is always located in the center above 1a.
この様にして構成する場合、回転子ヨーク１と磁石片
２の固着に使用する接着剤は従来通りの塗布形のもので
も勿論かまわないが、液状で浸透性に秀れたいわゆる瞬
間接着剤タイプのものの使用が可能になる。In such a configuration, the adhesive used for fixing the rotor yoke 1 and the magnet piece 2 may be of the conventional coating type, of course, but a so-called instant adhesive type which is liquid and has excellent permeability. It becomes possible to use the ones.
この点を説明すると、回転子ヨーク１と磁石片２は、
前述の方法で当接し、適当な方法で仮固定しておいて回
転子ヨーク外径面に設けた凹部1bによって形成される磁
石片２とのスキ間に前記接着剤を滴下浸透させる。接着
剤は軸方向に形成された前記スキ間の中を軸方向に浸透
しつつ周方向への拡がりを見せ、従来工法では浸透しな
かった深部まで到達する。To explain this point, the rotor yoke 1 and the magnet piece 2 are
The adhesive is abutted by the above-mentioned method, temporarily fixed by an appropriate method, and the adhesive is dripped and permeated between the gap with the magnet piece 2 formed by the recess 1b provided on the outer surface of the rotor yoke. The adhesive spreads in the circumferential direction while penetrating in the gaps formed in the axial direction in the axial direction, and reaches a deep portion which has not penetrated in the conventional method.
又、磁石片２の周方向端部2aが両側共回転子ヨーク１
の凸部1a上に当接されない場合を考えると、磁石片２は
凸部1aの上では丁度シーソーの様になり、磁石片２の押
さえ方によって、傾いて回転子ヨーク１に押しつけら
れ、固着される事になる。この事は完成した回転子３の
ダイナミックバランスが崩れる事を意味する。Further, the circumferential ends 2a of the magnet pieces 2 are arranged on both sides of the rotor yoke 1.
Considering the case where the magnet piece 2 is not brought into contact with the convex portion 1a, it becomes just like a seesaw on the convex portion 1a, and depending on how the magnet piece 2 is pressed, the magnet piece 2 is inclined and pressed against the rotor yoke 1, and is fixed. Will be done. This means that the dynamic balance of the completed rotor 3 is lost.
以上の様にして組立てた回転子３を軸４と共に固定子
５内に装着し、軸受装置６で回転自在に保持しつつ締結
部品７によって無刷子電動機の組立が完了する。The rotor 3 assembled as described above is mounted in the stator 5 together with the shaft 4, and is rotatably held by the bearing device 6 while the fastener 7 completes the assembly of the brushless motor.
なお、回転子ヨーク１は、鉄板を積層して構成する
か、磁性粉末の焼結によって構成する。The rotor yoke 1 is formed by stacking iron plates or by sintering magnetic powder.
発明の効果 以上説明した如く本発明の構成とする事により、次の
様な効果が得られる。EFFECTS OF THE INVENTION With the configuration of the present invention as described above, the following effects can be obtained.
1.液状の浸透性の良い接着剤が使用できる事で、回転子
製造工程から塗布作業が除去でき大巾に合理化できる。1. Since liquid adhesive with good permeability can be used, coating work can be eliminated from the rotor manufacturing process, and it can be greatly rationalized.
2.瞬間硬化形接着剤の使用が可能になる事で、従来硬化
用に用いた熱源やスペースが不用となり、省エネルギー
が図れる。2.Since it is possible to use an instant curing type adhesive, the heat source and space used for conventional curing are unnecessary, and energy can be saved.
3.回転子外径面の凸部に磁石片の周方向端部の一方が常
に位置し、かつ凹凸ピッチの方が磁石片弧状角より小さ
い為、磁石片当接時の傾きの発生がなく、高精度の回転
子を得られる。3.Since one of the circumferential ends of the magnet piece is always located on the convex portion of the rotor outer diameter surface and the uneven pitch is smaller than the arc angle of the magnet piece, no tilt occurs when the magnet piece abuts. , High precision rotor can be obtained.
第１図は本発明の回転子を用いた無刷子電動機組立状態
斜視図、第２図は同回転子の正面図である。 １……回転子ヨーク、２……磁石片、1a……凸部、1b…
…凹部、2a……磁石周方向端部。FIG. 1 is a perspective view of an assembled state of a brushless motor using the rotor of the present invention, and FIG. 2 is a front view of the rotor. 1 ... Rotor yoke, 2 ... Magnet piece, 1a ... Convex part, 1b ...
… Recessed part, 2a …… End part in the magnet circumferential direction.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭57−6378（ＪＰ，Ｕ) 実開 昭58−183079（ＪＰ，Ｕ) 実開 昭58−56579（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography SHO 57-6378 (JP, U) ACT 58-183079 (JP, U) ACT 58-56579 (JP, U)
Claims (1)
片の弧状角より小さい発生ピッチ角で設けた複数の凹部
を有する回転子ヨーク外径面に、前記永久磁石片の周方
向の少なくとも一方が前記回転子ヨーク外径面の凸部の
中央部に位置するように接着固定する無刷子電動機の回
転子製造方法。1. A rotor yoke outer diameter surface having a plurality of recesses in which a plurality of arc-shaped permanent magnet pieces are provided at a generated pitch angle smaller than the arc-shaped angle of the permanent magnet pieces, in the circumferential direction of the permanent magnet pieces. A method for manufacturing a rotor of a brushless electric motor, wherein at least one of the rotor yoke is bonded and fixed such that it is located at a central portion of a convex portion of the outer surface of the rotor yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61171208A JPH0832142B2 (en) | 1986-07-21 | 1986-07-21 | Brushless motor rotor manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61171208A JPH0832142B2 (en) | 1986-07-21 | 1986-07-21 | Brushless motor rotor manufacturing method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9005385A Division JPH0740780B2 (en) | 1985-04-26 | 1985-04-26 | Brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6264244A JPS6264244A (en) | 1987-03-23 |
| JPH0832142B2 true JPH0832142B2 (en) | 1996-03-27 |
Family
ID=15919034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61171208A Expired - Lifetime JPH0832142B2 (en) | 1986-07-21 | 1986-07-21 | Brushless motor rotor manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0832142B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013009458A (en) * | 2011-06-22 | 2013-01-10 | Nidec Sankyo Corp | Rotor and motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576378U (en) * | 1980-06-13 | 1982-01-13 | ||
| JPS5895181U (en) * | 1981-12-22 | 1983-06-28 | 三菱電機株式会社 | dc motor |
| JPS5897984U (en) * | 1981-12-24 | 1983-07-04 | 三菱電機株式会社 | motor |
| JPS58103577U (en) * | 1981-12-29 | 1983-07-14 | 富士電機株式会社 | Permanent magnet adhesive fixing device |
-
1986
- 1986-07-21 JP JP61171208A patent/JPH0832142B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6264244A (en) | 1987-03-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |