JPS59188369A - Flat brushless motor - Google Patents
Flat brushless motorInfo
- Publication number
- JPS59188369A JPS59188369A JP6060983A JP6060983A JPS59188369A JP S59188369 A JPS59188369 A JP S59188369A JP 6060983 A JP6060983 A JP 6060983A JP 6060983 A JP6060983 A JP 6060983A JP S59188369 A JPS59188369 A JP S59188369A
- Authority
- JP
- Japan
- Prior art keywords
- brushless motor
- rotor magnet
- yoke member
- flat brushless
- magnet
- 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
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
-
- 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
- H02K1/14—Stator cores with salient poles
Abstract
Description
【発明の詳細な説明】 本発明は偏平ブラシレスモータに圓する。[Detailed description of the invention] The present invention relates to a flat brushless motor.
かかる偏平ブラシレスモータの従来例を第１図に示す。A conventional example of such a flat brushless motor is shown in FIG.
図示した如く、ハウジングに１には円筒状のボス部１ａ
が形成されており、該ボス部内には２つのボールベアリ
ング２を介してスピンドル３が枢支されている。スピン
ドル３の下端部にはロータブツシュ４が固着され″、ロ
ータブツシュ４の外周にはその上面においてロータマグ
ネット５を担持したロータマグネット支持部材６が嵌着
されている。ロータマグネット５はロータマグネット支
持部材６の回転方向に対して一定のピッチで複数着磁さ
れている。また、ロータマグネット５の磁極面に対向し
て配置されたコイル７はハウジング１に固設された圧延
鋼板などの高透磁率材料から成るヨーク部材８の下面に
固着されている。ヨーク部材８は円板状であり、該ヨー
ク部材の中央部に設けられた開口部８ａがボス部１ａに
外嵌する形となっている。As shown in the figure, the housing 1 has a cylindrical boss portion 1a.
A spindle 3 is pivotally supported within the boss portion via two ball bearings 2. A rotor bush 4 is fixed to the lower end of the spindle 3, and a rotor magnet support member 6 carrying a rotor magnet 5 is fitted on the outer periphery of the rotor bush 4 on its upper surface. A plurality of coils 7 are magnetized at a constant pitch with respect to the rotational direction of the rotor magnet 5.The coils 7, which are arranged opposite to the magnetic pole surface of the rotor magnet 5, are made of a high magnetic permeability material such as a rolled steel plate fixed to the housing 1. The yoke member 8 is fixed to the lower surface of a yoke member 8. The yoke member 8 is disk-shaped, and an opening 8a provided at the center of the yoke member is configured to fit into the boss portion 1a.
この偏平ブラシレスモータにおいてはコイル７に交互に
スイッチング電流を流すことによって回転磁界が発生し
、磁気的吸引及び反発によってロータマグネット５及び
ロータマグネット支持部材６が回転駆動されるのである
。In this flat brushless motor, a rotating magnetic field is generated by alternately passing switching current through the coil 7, and the rotor magnet 5 and rotor magnet support member 6 are rotationally driven by magnetic attraction and repulsion.
上記した構成の偏平ブラシレスモータにおいてはヨーク
部材として円板状の高透磁率材料が用いられており、ロ
ータマグネット５の回転に伴って該ヨーク部材内に渦電
流が発生し、ロータマグネットの回転を妨げる方向に磁
界を発生する。また、渦電流はロータマグネットの回転
数に比例して増大する。従って、この種の偏平ブラシレ
スモータでは高速回転になるに従って回転効率の悪化を
きたし、高速回転用のモータとしては採用出来ないとい
う欠点があった。In the flat brushless motor configured as described above, a disc-shaped high magnetic permeability material is used as the yoke member, and as the rotor magnet 5 rotates, eddy currents are generated within the yoke member, inhibiting the rotation of the rotor magnet. Generates a magnetic field in the blocking direction. Further, the eddy current increases in proportion to the rotation speed of the rotor magnet. Therefore, this type of flat brushless motor has the drawback that its rotational efficiency deteriorates as the rotation speed increases, and it cannot be used as a motor for high-speed rotation.
本発明は上記した点に鑑みてなされたものであって、そ
の目的とするところは高速回転時においても高い回転効
率を有する偏平ブラシレスモータを提供するとする。The present invention has been made in view of the above points, and its object is to provide a flat brushless motor that has high rotational efficiency even during high-speed rotation.
本発明による偏平ブラシレスモーフは、ロータマグネッ
トを担持するロータマグネット支持部材と、前記ロータ
マグネットに回転力を伺与すベく前記マグネットの磁極
面と対向配置されたコイルを担持したヨーク部材とを有
する偏平ブラシレスモーフであって、前記ヨーク部材は
磁性薄板を渦巻状に巻回して円板状に形成し且つ各渦巻
層間を絶縁して成ることを特徴とする。The flat brushless morph according to the present invention includes a rotor magnet support member that supports a rotor magnet, and a yoke member that supports a coil that is arranged to face the magnetic pole surface of the magnet so as to apply rotational force to the rotor magnet. The yoke member is a flat brushless morph, and is characterized in that the yoke member is formed into a disk shape by spirally winding a magnetic thin plate, and the spiral layers are insulated.
以下、本発明に係る偏平ブラシレスモータを第３図を参
照しつつ説明する。Hereinafter, the flat brushless motor according to the present invention will be explained with reference to FIG.
図において、ヨーク部材１０は例えばけい素鋼から成る
磁性薄板を渦巻状に巻回して円板状に形成したものであ
って、各渦巻層間はプラスチックコーティング等により
絶縁されている。In the figure, a yoke member 10 is formed into a disk shape by spirally winding a magnetic thin plate made of silicon steel, for example, and each spiral layer is insulated by a plastic coating or the like.
尚、本実施例においては上記以外の部分は前述した従来
例の偏平ブラシレスモータと全く同様に構成されており
、詳述はしない。Incidentally, in this embodiment, the parts other than those described above are constructed in exactly the same manner as the conventional flat brushless motor described above, and will not be described in detail.
ここで、ヨーク部材１０の製造工程を第４図に基づいて
簡単に説明する。Here, the manufacturing process of the yoke member 10 will be briefly explained based on FIG. 4.
まず、けい素鋼等から成る薄板の表面にプラスチックコ
ーティングなどにより絶縁処理を施す。First, the surface of a thin plate made of silicon steel or the like is insulated with a plastic coating or the like.
然る後、該薄板をロール機などにかけて渦巻状に巻き回
す。次いで、これをスリッタ等の切断手段によって所定
の厚さに切断して円板状のヨーク部材とする。Thereafter, the thin plate is wound into a spiral shape using a rolling machine or the like. Next, this is cut into a predetermined thickness by a cutting means such as a slitter to obtain a disk-shaped yoke member.
尚、上記実施例ではヨーク部材の素材として表面に絶縁
処理を施したけい素鋼薄板を使用する場合を示したが、
これに限らず、例えば圧延鋼板等の表面が絶縁処理され
ていない薄板を利用することも出来る。この場合の絶縁
処理はスリッタ等の切断手段で円板状に切断した後に絶
縁性及び浸透性に優れた樹脂または接着剤を含浸させる
ことによってなされる。Incidentally, in the above embodiment, a case was shown in which a thin silicon steel plate whose surface was subjected to insulation treatment was used as the material of the yoke member.
The present invention is not limited to this, and it is also possible to use a thin plate whose surface is not insulated, such as a rolled steel plate. In this case, the insulation treatment is performed by cutting the disc into a disc shape using a cutting means such as a slitter, and then impregnating the disc with a resin or adhesive having excellent insulation and permeability.
以上詳述した如く、本発明による偏平ブラシレスモータ
においては、磁性薄板を渦巻状に巻回して円板状に形成
し且つ各渦巻層間を絶縁することによってヨーク部材が
形成されている。従って、ロータマグネットの回転に伴
って該ヨーク部材内に渦電流が発生することがなく、高
速回転時においても高い回転効率が得られるのである。As described in detail above, in the flat brushless motor according to the present invention, the yoke member is formed by spirally winding a magnetic thin plate to form a disk shape and insulating each spiral layer. Therefore, no eddy current is generated within the yoke member as the rotor magnet rotates, and high rotational efficiency can be obtained even during high speed rotation.
また、本発明による偏平ブラシレスモータは上記のよう
に、高速回転時における回転効率が高い為に、当該偏平
ブラシレスモータを薄形の高速回転用ブラシレスモータ
として例えば、ウィンヂエスター型固定磁気ディスク装
置等に使用することにより装置全体としての薄形化が図
れるのである。Furthermore, as described above, the flat brushless motor according to the present invention has high rotational efficiency during high-speed rotation, so the flat brushless motor can be used as a thin high-speed rotation brushless motor, for example, in a windshield star type fixed magnetic disk device, etc. By using this method, the entire device can be made thinner.
第１図及び第２図は偏平ブラシレスモータの従来例を示
す図、第３図は本発明に係る偏平ブラシレスモータの一
部を示す図、第４図はヨーク部材の製造工程を説明する
為の図である。
主要部分の符号の説明
１・・・・・・ハウジング
３・・・・・・スピンドル
４・・・・・・ロータブツシュ
５・・・・・・ロータマグネット
６・・・・・・ロータマグネット支持部材７・・・・・
・コイル
８．１０・・・・・・ヨーク部材
出願人 パイオニア株式会社
代理人 弁理士 藤村元彦（７ト＋７．、）省（）
図
纂３図
第７図
六３６７−1 and 2 are diagrams showing a conventional example of a flat brushless motor, FIG. 3 is a diagram showing a part of a flat brushless motor according to the present invention, and FIG. 4 is a diagram for explaining the manufacturing process of a yoke member. It is a diagram. Explanation of symbols of main parts 1... Housing 3... Spindle 4... Rotor bush 5... Rotor magnet 6... Rotor magnet support member 7...
・Coil 8.10... Yoke member applicant Pioneer Co., Ltd. agent Patent attorney Motohiko Fujimura (7t + 7.,) Ministry ()
Figure 3 Figure 7 Figure 6367-
Claims (1)
と、前記ロータマグネットに回転力を付与ずべく前記マ
グネットの磁極面と対向配置されたコイルを担持したヨ
ーク部材とを有する偏平ブラシレスモータであって、前
記ヨーク部材は磁性薄板を渦巻状に巻回して円板状に形
成し且つ各渦巻層間を絶縁して成ることを特徴とする偏
平ブラシレスモータ。A flat brushless motor comprising: a rotor magnet support member that supports a rotor magnet; and a yoke member that supports a coil that is arranged to face a magnetic pole surface of the magnet so as not to apply rotational force to the rotor magnet, the yoke member 1. A flat brushless motor characterized by comprising a magnetic thin plate spirally wound to form a disk shape, and each spiral layer being insulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6060983A JPS59188369A (en) | 1983-04-06 | 1983-04-06 | Flat brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6060983A JPS59188369A (en) | 1983-04-06 | 1983-04-06 | Flat brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59188369A true JPS59188369A (en) | 1984-10-25 |
Family
ID=13147167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6060983A Pending JPS59188369A (en) | 1983-04-06 | 1983-04-06 | Flat brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59188369A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625485A1 (en) * | 1985-08-20 | 1987-03-05 | Fujisaki Kyonori | DC ELECTRIC MOTOR |
| JPS6340176U (en) * | 1986-08-30 | 1988-03-15 | ||
| JPS6340169U (en) * | 1986-09-01 | 1988-03-15 | ||
| JPH01308159A (en) * | 1988-06-06 | 1989-12-12 | Canon Inc | Opposed type motor |
| EP0548362A1 (en) * | 1991-07-11 | 1993-06-30 | Secoh Giken, Inc. | Flat coreless dc motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934402A (en) * | 1972-07-29 | 1974-03-29 |
-
1983
- 1983-04-06 JP JP6060983A patent/JPS59188369A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934402A (en) * | 1972-07-29 | 1974-03-29 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3625485A1 (en) * | 1985-08-20 | 1987-03-05 | Fujisaki Kyonori | DC ELECTRIC MOTOR |
| JPS6340176U (en) * | 1986-08-30 | 1988-03-15 | ||
| JPS6340169U (en) * | 1986-09-01 | 1988-03-15 | ||
| JPH01308159A (en) * | 1988-06-06 | 1989-12-12 | Canon Inc | Opposed type motor |
| EP0548362A1 (en) * | 1991-07-11 | 1993-06-30 | Secoh Giken, Inc. | Flat coreless dc motor |
| EP0548362A4 (en) * | 1991-07-11 | 1995-10-18 | Secoh Giken Kk | Flat coreless dc motor |
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