JPS63190544A - Outer rotor type dc brushless motor - Google Patents
Outer rotor type dc brushless motorInfo
- Publication number
- JPS63190544A JPS63190544A JP1851087A JP1851087A JPS63190544A JP S63190544 A JPS63190544 A JP S63190544A JP 1851087 A JP1851087 A JP 1851087A JP 1851087 A JP1851087 A JP 1851087A JP S63190544 A JPS63190544 A JP S63190544A
- Authority
- JP
- Japan
- Prior art keywords
- armature
- magnet
- conductive pattern
- rotating magnet
- outer rotor
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 241000016649 Copaifera officinalis Species 0.000 description 1
- 239000004859 Copal Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Landscapes
- Brushless Motors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、アウターロータ型ＤＣブラシレスモータに関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an outer rotor type DC brushless motor.
（従来の技術）
従来１回転枠を介して回転軸に固着されたＮ−８極を交
互に設けた円環状の回転マグネットとこの回転マグネッ
トと面対向して固定子枠に固着された電機子とからなる
アウターロータ型ＤＣブラシレスモータが提案されてい
る。(Prior Art) Conventionally, a ring-shaped rotating magnet with N-8 poles alternately fixed to the rotating shaft via a rotating frame and an armature fixed to the stator frame face-to-face with the rotating magnet. An outer rotor type DC brushless motor has been proposed.
このモータの電機子は、一般に型抜きした継鉄を積層し
た後、絶縁処理を施してｆｆｉ機子コイルを捲つけたり
、或いはプラスチックの捲枠に電機子コイルを捲つけた
りして形成されている。The armature of this motor is generally formed by stacking die-cut yokes and then insulating them and wrapping them around an FFI armature coil, or by wrapping the armature coil around a plastic winding frame.
（発明が解決しようとする問題点）
しかしながら、前記従来の電機子として、型抜きした継
鉄を積層した後、電機子コイルを捲つけて形成した電機
子では、
（イ）有鉄心のためモータの回転周波数が高くなると、
うず電流による損失が大きくなり効率が悪い。(Problems to be Solved by the Invention) However, in the conventional armature described above, which is formed by laminating die-cut yoke and then wrapping the armature coil, (a) the motor has a ferrous core; As the rotational frequency of
Loss due to eddy current increases, resulting in poor efficiency.
（ロ）電機子を励磁しない状態に於てレラクタンストル
クが発生し、このコギングにより回転ムラの原因となる
。(b) Reluctance torque is generated when the armature is not excited, and this cogging causes uneven rotation.
またプラスチックの捲粋に電機子コイルを捲つけて形成
した電機子では
（ハ）作業が繁雑となり、位置検出用の磁気センサも別
置きで製作困難である。Furthermore, an armature formed by winding an armature coil around a plastic wrapper (c) requires complicated work, and it is difficult to manufacture a magnetic sensor for position detection as it must be installed separately.
（ニ）電機子コイルを捲付けた後、端末等がほぐれたり
して動作に悪影響を与える。。(d) After winding the armature coil, the terminal etc. may become unraveled, adversely affecting operation. .
（ホ）電機子コイルを励磁すると空心コイルのため、振
動が起こりやすく騒音が大きい。(E) When the armature coil is energized, it is an air-core coil, so it tends to vibrate and generate a lot of noise.
等の欠点があった。There were other drawbacks.
本発明は、これらの欠点を克服すべくなされたものであ
る。The present invention has been made to overcome these drawbacks.
（問題点を解決するための手段）
前記問題点を解決するための手段を実施例に対応する第
１図〜第５図を用いて説明する。(Means for solving the problems) Means for solving the problems described above will be explained using FIGS. 1 to 5, which correspond to embodiments.
本発明は、Ｎ−３極を交互に設けた円環状の回転マグネ
ット８と、この回転マグネット８と面対向して固定子枠
９に固着された電機子１とからなるアウターロータ型Ｄ
Ｃブラシレスモータにおいて、上記電機子１を導電パタ
ーンでなる電機子コイル２群及び上記回転マグネット８
の位置検出用磁気センサ３を配設したリード引き出し部
４を有するフレキシブルプリント基板５で形成し、かつ
上記フレキシブルプリント基板５の折り曲げ線７を挟ん
で上記電機子コイル２群及び位置検出用磁気センサ３と
は反対側に速度信号発生用導電パターン６及び逃げ溝ｔ
を設け、上記速度信号発生用導電パターン６と面対向す
る上記回転マグネット８の面にＮ−３ｉを交互に設けた
マグネットＦＧ部８ｂを配設したものである。The present invention is an outer rotor type D, which is composed of an annular rotating magnet 8 in which N-3 poles are alternately provided, and an armature 1 fixed to a stator frame 9 in a face-to-face relationship with the rotating magnet 8.
In the C brushless motor, the armature 1 is connected to two groups of armature coils made of a conductive pattern and the rotating magnet 8.
The armature coil 2 group and the position detection magnetic sensor are formed of a flexible printed circuit board 5 having a lead lead-out part 4 on which a position detection magnetic sensor 3 is disposed, and the armature coil 2 group and the position detection magnetic sensor are sandwiched between the bending line 7 of the flexible printed circuit board 5. Conductive pattern 6 for speed signal generation and relief groove t on the opposite side from 3.
, and magnet FG portions 8b in which N-3i are alternately provided are arranged on the surface of the rotating magnet 8 that faces the speed signal generating conductive pattern 6.
（作 用）
本発明によれば、電機子１が、ｔ１７Ｂパターンでなる
電機子コイル２群、回転マグネット８の位置検出用磁気
センサ３及び速度信号発生用導電パターン６が配設され
たフレキシブルプリント基板５で形成されているので、
アウターロータ型ＤＣブラシレスモータの組立が簡易と
なり、高効率にして定速制御可能のモータが実現できる
。(Function) According to the present invention, the armature 1 is made of a flexible print in which the armature coil 2 group having a T17B pattern, the magnetic sensor 3 for detecting the position of the rotating magnet 8, and the conductive pattern 6 for generating a speed signal are arranged. Since it is formed of the substrate 5,
Assembly of the outer rotor type DC brushless motor is simplified, and a motor with high efficiency and constant speed control can be realized.
（実施例）
以下、本発明を第１図〜第５図に示す一実施例により説
明する。(Example) The present invention will be described below with reference to an example shown in FIGS. 1 to 5.
第１図は本発明によるアウターロータ型ＤＣブラシレス
モータの縦断面図で、１は固定子枠９に固着されたリー
ド引き出し部４を有するフレキシブルプリント基板５で
形成された電機子、８は電機子１と空隙ｇを保って面対
向し、回転軸１０に回転枠１２を介して固着された回転
マグネット。FIG. 1 is a longitudinal cross-sectional view of an outer rotor type DC brushless motor according to the present invention, in which 1 is an armature formed of a flexible printed circuit board 5 having a lead pull-out portion 4 fixed to a stator frame 9, and 8 is an armature. 1 and 1 with a gap g between them, and is fixed to a rotating shaft 10 via a rotating frame 12.
１１は軸受である。11 is a bearing.
電機子１は第２図に示すようにフレキシブルプリント基
板５に導電パターンでなる複数個の電機子コイル２群及
び回転マグネット８の位置検出用磁気センサ３が配設さ
れ、更に折り曲げａ７を挟んで電機子コイル２群及び位
置検出用磁気センサ３とは反対側のリード引き出し部４
側には、くし歯状の速度信号発生用導電パターン６と逃
げ溝を設けられている。As shown in FIG. 2, the armature 1 has two groups of armature coils each made of a conductive pattern and a magnetic sensor 3 for detecting the position of a rotating magnet 8 arranged on a flexible printed circuit board 5, and is further bent with a7 in between. Lead pullout section 4 on the opposite side from the armature coil 2 group and the position detection magnetic sensor 3
A comb-like conductive pattern 6 for generating speed signals and relief grooves are provided on the sides.
回転マグネット８は、第４図に示すように、Ｎ−Ｓ極で
なる駆動用磁極８ａを交互に設けて円環状に形成され、
電機子１の速度信号発生用導電パターン６と面対向する
面に駆動用磁極８ａの偶数倍の多極着磁されたマグネッ
トＦＧ部（周波数発電機形成用磁極）８ｂが、配設され
ている。As shown in FIG. 4, the rotating magnet 8 is formed into an annular shape with driving magnetic poles 8a having N and S poles arranged alternately.
A magnet FG section (magnetic poles for forming a frequency generator) 8b magnetized with a multi-pole count of an even number multiple of the driving magnetic poles 8a is disposed on the surface of the armature 1 facing the speed signal generation conductive pattern 6. .
このように構成されたモータでは、電機子１は第３図に
示すように折り曲げ線７でリード引き出し部４側が折り
曲げられ帽子状に形成されて、固定子枠９に固着され、
フレキシブルプリント基板５上に配設された導電パター
ンでなる電機子コイル２群が、回転軸１０を中心として
回転マグネット８の面と空隙ｇを保って対向し、かつ電
機子コイル２群に近接して磁気センサ３がフレキシブル
プリント基板５上に配設され、これによって対向する回
転マグネット８の磁束が検出されて、その出力で制御装
置（図示せず）を介して複数個の電機子コイル２に所定
方向に順次通電するようにし、対向する回転マグネット
８の駆動用磁極８ａとの間で発生する電動力によって回
転マグネット８が駆動され、モータとしての動作が行わ
れる。In the motor constructed in this way, the armature 1 is bent at the bending line 7 on the side of the lead pull-out portion 4 to form a cap shape, and is fixed to the stator frame 9, as shown in FIG.
Two groups of armature coils made of conductive patterns arranged on the flexible printed circuit board 5 face the surface of the rotating magnet 8 with a gap g maintained around the rotating shaft 10, and are close to the second group of armature coils. A magnetic sensor 3 is disposed on a flexible printed circuit board 5, which detects the magnetic flux of the opposing rotating magnet 8, and sends its output to a plurality of armature coils 2 via a control device (not shown). The rotating magnet 8 is sequentially energized in a predetermined direction, and the rotating magnet 8 is driven by the electric force generated between the opposing driving magnetic poles 8a of the rotating magnet 8, and operates as a motor.
また、帽子状に形成されたフレキシブルプリント基板５
のリード引き出し部４側に配設されたくし歯状の速度信
号発生用導電パターン６が回転マグネット８のマグネッ
トＦＧ部８ｂと対向するように設けられている。これに
よりマグネットＦＧ部８ｂと速度信号発生用導電パター
ン６どにより周波数発電機が形成され、定速制御を行う
ことができる。In addition, a flexible printed circuit board 5 formed in a hat shape
A comb-like speed signal generating conductive pattern 6 disposed on the lead extraction portion 4 side is provided so as to face the magnet FG portion 8b of the rotating magnet 8. As a result, a frequency generator is formed by the magnet FG portion 8b, the speed signal generating conductive pattern 6, etc., and constant speed control can be performed.
トルク定数の大きいモータを得るため、電機子コイル２
の捲回数を増やしたい場合は、第５図に示すように導電
パターンでなる電機子コイル２群を有する電機子コイル
専用フレキシブルプリント基板１３をフレキシブルプリ
ント基板５に重ねて電気的に両者を結線して使用すれば
よい。In order to obtain a motor with a large torque constant, armature coil 2
If you want to increase the number of windings, as shown in FIG. 5, a flexible printed circuit board 13 dedicated to armature coils having two groups of armature coils made of conductive patterns is stacked on the flexible printed circuit board 5, and the two are electrically connected. Just use it.
尚、この場合、回転マグネット８の主磁束を積極的に吸
引するため固定子枠９とフレキシブルプリント基板５と
の間に比較的透磁率の高いバックヨーク１４を配設して
も同様の効果が期待できる。In this case, the same effect can be obtained even if a back yoke 14 with relatively high magnetic permeability is provided between the stator frame 9 and the flexible printed circuit board 5 in order to actively attract the main magnetic flux of the rotating magnet 8. You can expect it.
（発明の効果）
以上説明したように、本発明によれば、電機子がフレキ
シブルプリント基板に配設された導電パターンでなる電
機子コイル群で形成され、回転マグネットの位置検出用
磁気センサもフレキシブルプリント基板に配設され、か
つ、フレキシブルプリント基板のリード引き出し部側に
速度信号発生用導電パターンが回転マグネットの面に設
けられていたマグネットＦＧ部と面対向するように設け
られている。(Effects of the Invention) As explained above, according to the present invention, the armature is formed of an armature coil group made of a conductive pattern arranged on a flexible printed circuit board, and the magnetic sensor for detecting the position of the rotating magnet is also flexible. A speed signal generating conductive pattern is disposed on the printed circuit board and is provided on the lead extraction section side of the flexible printed circuit board so as to face the magnet FG section provided on the surface of the rotating magnet.
従って、電機子コイル自体が偏平な空心コイルで形成さ
れているので、
（ａ）うず電流による損失がなく、高効率のモータが実
現できる。Therefore, since the armature coil itself is formed of a flat air-core coil, (a) there is no loss due to eddy current, and a highly efficient motor can be realized.
（ｂ）レラクタンスの変動によるコギングが発生しない
ため回転ムラが小となる。(b) Cogging due to reluctance fluctuations does not occur, so rotation unevenness is reduced.
（ｃ）組立が簡易となり、さらに部品点数が従来に比し
て大幅に少なくなる。(c) Assembly is simplified and the number of parts is significantly reduced compared to the conventional method.
等の効果がある。There are other effects.
第１図は、本発明の一実施例を示すアウターロータ型Ｄ
Ｃブラシレスモータの縦断面図、第２図は同フレキシブ
ルプリント基板で形成された電機子の平面展開図、第３
図は同電機子の使用状態を示す斜視図、第４図は同回転
マグネットの斜視図、第５図は電機子コイル専用フレキ
シブルプリント基板の平面展開図である。
１・・電機子 ２・・電機子コイル３・・磁気セ
ンサ ４・パリード引き出し部５・・フレキシブルプ
リント基板
６・・速度信号発生パターン
７・・折り曲げ線 ８・・回転マグネット８ａ・・駆
動用磁極 ８ｂ・・マグネットＦＧ部９・・固定子枠
、１０・・回転軸
１１・・軸受 １２・・回転枠
１３・・電機子コイル専用フレキシブル基板１４・・バ
ックヨーク ｔ・・逃げ溝
ｇ・・空隙
特許出願人 コパル電子株式会社
８ｂ：マグネットＦＧ部
９：固定子枠
１０：回転軸FIG. 1 shows an outer rotor type D showing an embodiment of the present invention.
Figure 2 is a vertical cross-sectional view of the C brushless motor; Figure 2 is a plan development view of the armature formed from the flexible printed circuit board;
FIG. 4 is a perspective view of the rotating magnet, and FIG. 5 is a developed plan view of a flexible printed circuit board dedicated to the armature coil. 1. Armature 2. Armature coil 3. Magnetic sensor 4. Parryed lead portion 5. Flexible printed circuit board 6. Speed signal generation pattern 7. Bending line 8. Rotating magnet 8a. Drive magnetic pole 8b... Magnet FG section 9... Stator frame
, 10...Rotating shaft 11...Bearing 12...Rotating frame 13...Flexible board for armature coil 14...Back yoke t...Escape groove g...Gap Patent applicant Copal Electronics Co., Ltd. 8b: Magnet FG section 9: Stator frame 10: Rotating shaft
Claims (1)
の回転マグネットと面対向して固定子枠に固着された電
機子とからなるアウターロータ型ＤＣブラシレスモータ
において、前記電機子を導電パターンでなる電機子コイ
ル群及び前記回転マグネットの位置検出用磁気センサを
配設したリード引き出し部を有するフレキシブルプリン
ト基板で形成し、かつ前記フレキシブルプリント基板の
折り曲げ線を挟んで前記電機子コイル群及び位置検出用
磁気センサとは反対側に速度信号発生用導電パターン及
び逃げ溝を設け、前記速度信号用導電パターンと面対向
する上記回転マグネットの面にＮ−Ｓ極を交互に設けた
マグネットＦＧ部を配設したことを特徴とするアウター
ロータ型ＤＣブラシレスモータ。In an outer rotor type DC brushless motor consisting of an annular rotating magnet with alternating north and south poles and an armature fixed to a stator frame facing the rotating magnet, the armature is connected to a conductive pattern. The armature coil group and the position of the armature coil group are formed of a flexible printed circuit board having a lead pull-out part in which a magnetic sensor for detecting the position of the rotating magnet is arranged, and the armature coil group and the position are arranged on both sides of the bending line of the flexible printed circuit board. A magnet FG portion is provided with a speed signal generation conductive pattern and an escape groove on the side opposite to the detection magnetic sensor, and N-S poles are alternately provided on the surface of the rotating magnet facing the speed signal conductive pattern. An outer rotor type DC brushless motor characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1851087A JPS63190544A (en) | 1987-01-30 | 1987-01-30 | Outer rotor type dc brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1851087A JPS63190544A (en) | 1987-01-30 | 1987-01-30 | Outer rotor type dc brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63190544A true JPS63190544A (en) | 1988-08-08 |
Family
ID=11973624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1851087A Pending JPS63190544A (en) | 1987-01-30 | 1987-01-30 | Outer rotor type dc brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63190544A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02103779U (en) * | 1989-12-19 | 1990-08-17 | ||
| JPH0488374U (en) * | 1990-12-06 | 1992-07-31 | ||
| KR20030089546A (en) * | 2002-05-16 | 2003-11-22 | 주식회사 메타시스템 | BLDC motor having flexible stator |
| JP2013183514A (en) * | 2012-03-01 | 2013-09-12 | Ricoh Co Ltd | Motor drive device, sheet conveyer, and image forming device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5992761A (en) * | 1982-11-17 | 1984-05-29 | Matsushita Electric Ind Co Ltd | Motor apparatus |
-
1987
- 1987-01-30 JP JP1851087A patent/JPS63190544A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5992761A (en) * | 1982-11-17 | 1984-05-29 | Matsushita Electric Ind Co Ltd | Motor apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02103779U (en) * | 1989-12-19 | 1990-08-17 | ||
| JPH0488374U (en) * | 1990-12-06 | 1992-07-31 | ||
| KR20030089546A (en) * | 2002-05-16 | 2003-11-22 | 주식회사 메타시스템 | BLDC motor having flexible stator |
| JP2013183514A (en) * | 2012-03-01 | 2013-09-12 | Ricoh Co Ltd | Motor drive device, sheet conveyer, and image forming device |
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