JPS6338948B2 - - Google Patents
Info
- Publication number
- JPS6338948B2 JPS6338948B2 JP57060710A JP6071082A JPS6338948B2 JP S6338948 B2 JPS6338948 B2 JP S6338948B2 JP 57060710 A JP57060710 A JP 57060710A JP 6071082 A JP6071082 A JP 6071082A JP S6338948 B2 JPS6338948 B2 JP S6338948B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- magnet
- magnetized
- poles
- rotor 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
Links
- 238000001514 detection method Methods 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 5
- 238000003491 array Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000005415 magnetization Effects 0.000 description 11
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 239000000758 substrate Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/14—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with speed sensing devices
Description
【発明の詳細な説明】
本発明は、扁平形のブラシレスモータのロータ
ヨークに配設され一体化されたマグネツトを適用
するモータ駆動用の磁極列とポールセンサ用の磁
極列と速度検出用の磁極列の構成に関する。Detailed Description of the Invention The present invention provides a magnetic pole array for motor driving, a magnetic pole array for a pole sensor, and a magnetic pole array for speed detection, which apply magnets arranged and integrated with the rotor yoke of a flat brushless motor. Regarding the configuration of
従来の扁平形ブラシレスモータの要部を側断面
図で第１図に示す。 FIG. 1 shows a side sectional view of the main parts of a conventional flat brushless motor.
１は回転軸、２はロータヨーク、２ａはロータ
ヨークの円筒部、２ｂはロータヨークのつば部、
３はモータ駆動用マグネツト、４はポールセンサ
用マグネツト、５は速度検出用マグネツト〔FG
（周波数発生器）用マグネツト〕、６は基板、７は
ステータコア、８はステータコイル、９は取り付
け座、１０はカシメピン、１１はポールセンサ、
１２は速度検出用導体（FGパターン）、１３は軸
受、１４はハウジングである。 1 is a rotating shaft, 2 is a rotor yoke, 2a is a cylindrical part of the rotor yoke, 2b is a collar part of the rotor yoke,
3 is a motor drive magnet, 4 is a pole sensor magnet, 5 is a speed detection magnet [FG
(frequency generator) magnet], 6 is a board, 7 is a stator core, 8 is a stator coil, 9 is a mounting seat, 10 is a caulking pin, 11 is a pole sensor,
12 is a speed detection conductor (FG pattern), 13 is a bearing, and 14 is a housing.
ほぼ鍋状のロータヨーク２は回転軸１に嵌合固
着されかつ円筒部２ａの先端につば部２ｂを有し
ており、ｍ極の磁極列を着磁したモータ駆動用マ
グネツト３は前記ロータヨーク２の円筒部２ａの
内周に固着され、同じくｍ極の磁極列に着磁した
ポールセンサ用マグネツト４は前記ロータヨーク
２のつば部２ｂに固着され、速度検出用マグネツ
ト５はｎ極（ただしｎ＞ｍ）の磁極列を前記ポー
ルセンサ用マグネツト４の磁極列と並列して着磁
され、基板６は前記ロータヨーク２のつば部２ｂ
側にロータヨークと空隙を介して対向して配設さ
れ、ステータコア７は前記基板６上に前記モータ
駆動用マグネツト３と径方向の細隙を介して対向
して設けられかつ外周のスロツト内にステータコ
イル８を巻装し、ポールセンサ１１および速度検
出用導体１２は前記基板６上もしくは基板内に前
記ポールセンサ用マグネツト４および速度検出用
マグネツト５に細隙を介して設けられている。 A substantially pot-shaped rotor yoke 2 is fitted and fixed to the rotating shaft 1 and has a flange portion 2b at the tip of a cylindrical portion 2a. A pole sensor magnet 4, which is fixed to the inner periphery of the cylindrical part 2a and similarly magnetized to a magnetic pole array of m poles, is fixed to the flange part 2b of the rotor yoke 2, and a speed detection magnet 5 has n poles (where n>m ) is magnetized in parallel with the magnetic pole array of the pole sensor magnet 4, and the substrate 6 is attached to the flange portion 2b of the rotor yoke 2.
The stator core 7 is disposed on the substrate 6 to face the motor drive magnet 3 with a gap in the radial direction, and the stator core 7 is disposed on the substrate 6 to face the motor drive magnet 3 with a gap in the radial direction. A coil 8 is wound thereon, and a pole sensor 11 and a speed detection conductor 12 are provided on or in the substrate 6 to the pole sensor magnet 4 and the speed detection magnet 5 with a narrow gap therebetween.
このように従来装置においては、モータ駆動用
マグネツト３とFG用マグネツト５とが別々にな
つており、別々に配設され、製作上のコストおよ
びマグネツトの位置決め精度等に問題がある。 As described above, in the conventional device, the motor drive magnet 3 and the FG magnet 5 are separate and arranged separately, which poses problems in manufacturing costs and magnet positioning accuracy.
また、先に出願されたこの種装置として実願昭
57−91181号（実開昭58−193883号公報）がみら
れる。この種装置の円筒状の回転子磁石は、その
一端に鍔部を形成し、この鍔部にポールセンサ用
の磁極列を着磁し、かつ円筒状主磁石（いわゆる
モータ駆動用マグネツト）の厚みに相当する鍔部
の部分を無着磁部として介在させており、したが
つて鍔部の外周がその無着磁部だけ拡大し、装置
のコンパクト化に不具合である。 In addition, the first application for this type of device was
No. 57-91181 (Utility Model Publication No. 58-193883) can be seen. The cylindrical rotor magnet of this type of device has a flange formed at one end, a magnetic pole array for a pole sensor is magnetized on this flange, and the thickness of the cylindrical main magnet (so-called motor drive magnet) is A portion of the flange corresponding to the non-magnetized portion is interposed as a non-magnetized portion, and therefore, the outer periphery of the flange is expanded by the non-magnetized portion, which is a problem in making the device compact.
ここにおいて、本発明は、従来装置ならびに先
のこの装置の難点を完全に克服し、３つの異なつ
た着磁を一体化されたマグネツトに行なうように
したブラシレスモータを提供することを、その目
的とする。 SUMMARY OF THE INVENTION The object of the present invention is to provide a brushless motor that completely overcomes the drawbacks of the conventional and previous devices and provides three different types of magnetization in an integrated magnet. do.
第２図は本発明の一実施例の要部の側断面図、
第３図はそのロータマグネツトへの着磁方向（矢
印の方向）を示す側断面図、第４図はそのロータ
マグネツトの各磁極列を表わす斜視図である。 FIG. 2 is a side sectional view of essential parts of an embodiment of the present invention;
FIG. 3 is a side cross-sectional view showing the direction of magnetization of the rotor magnet (in the direction of the arrow), and FIG. 4 is a perspective view showing each magnetic pole array of the rotor magnet.
各図面において同一符号は相互に同一もしくは
相当部分を表わすものとする。 In each drawing, the same reference numerals represent the same or corresponding parts.
本発明は、先ず、ロータマグネツト１５は異方
性プラスチツク磁石を組成要素とする。 In the present invention, first, the rotor magnet 15 is composed of an anisotropic plastic magnet.
次に、その異方性プラスチツク磁石を断面がＬ
字状でかつリング状に形成する。 Next, we made the anisotropic plastic magnet with a cross section of L.
Form into a letter shape and a ring shape.
そして、その円筒部１５ａに前記モータ駆動用
のｍ極の磁極列１６を径方向に着磁し、かつつば
部１５ｂに前記ポールセンサ用のｍ極の磁極列１
７と前記速度検出用のｎ極の磁極列１８を並列し
て軸方向に着磁している。 Then, a magnetic pole array 16 of m poles for driving the motor is radially magnetized in the cylindrical portion 15a, and a magnetic pole array 16 of m poles for the pole sensor is magnetized in the brim portion 15b.
7 and the n-pole magnetic pole array 18 for speed detection are arranged in parallel and magnetized in the axial direction.
また、Ａはモータ駆動用磁極列１６の着磁方向
を表わし、Ｂはポールセンサ用磁極列１７の着磁
方向を示し、Ｃは速度検出用磁極列１８の着磁方
向である。 Further, A represents the magnetization direction of the motor drive magnetic pole array 16, B represents the magnetization direction of the pole sensor magnetic pole array 17, and C represents the magnetization direction of the speed detection magnetic pole array 18.
なお、第４図における速度検出用磁極列１８の
マグネツトはその態様を表わすもので、正確な極
数を示すものではない。 It should be noted that the magnets of the speed detecting magnetic pole array 18 in FIG. 4 represent the mode thereof, and do not indicate the exact number of poles.
しかして、本発明は同一平面上に３つの異なつ
た着磁を行なつたものでない、つまりモータ駆動
用の磁極列１６に対してポールセンサ用磁極列１
７と速度検出用の磁極列１８は相互に直交する平
面内にあり、磁気の干渉等が生じることはない。 However, in the present invention, three different magnetizations are not performed on the same plane. In other words, the magnetic pole array 16 for the pole sensor is
7 and the magnetic pole array 18 for speed detection are in planes that are perpendicular to each other, so that no magnetic interference occurs.
かくして本発明によれば、それぞれの磁化方向
を異にする３種のマグネツトが異方性プラスチツ
ク磁石により一部品として一体化している点で非
常に優れており、組立の簡素化により製作上のコ
スト低減と、前記３種のマグネツトの位置決め精
度の向上と、磁石の性能を最大限に引き出せる方
向にかつ無着磁部を生じないようにロータマグネ
ツトつば部一杯に着磁してつば部の広がりを最大
限に有効適切に利用していることから、小形化つ
まりモータの外径を小さくすることができ、その
動力源（例えば小形化が強く要求されるフロツピ
ーデイスク駆動用ブラシレスモータ）としての適
用範囲を一段と大きくすることができる。 Thus, the present invention is very superior in that three types of magnets with different magnetization directions are integrated as a single component using an anisotropic plastic magnet, and the manufacturing cost is reduced due to the simplified assembly. In order to maximize the performance of the magnets and to prevent the generation of non-magnetized parts, the rotor magnet's flange is fully magnetized and the flange is widened. By making the most effective and appropriate use of the The scope of application can be further expanded.
第１図は従来装置の要部の側断面図、第２図は
本発明の一実施例の要部の側断面図、第３図はそ
のロータマグネツトへの着磁方向を示す側断面
図、第４図はそのロータマグネツトの各磁極列を
表わす斜視図である。
１…回転軸、２…ロータヨーク、２ａ…ロータ
ヨークの円筒部、２ｂ…ロータヨークのつば部、
３…モータ駆動用マグネツト、４…ポールセンサ
用マグネツト、５…速度検出用マグネツト（FG
用マグネツト）、６…基板、７…ステータコア、
８…ステータコイル、９…取り付け座、１０…カ
シメピン、１１…ポールセンサ、１２…速度検出
用導体（FGパターン）、１３…軸受、１４…ハウ
ジング、１５…ロータマグネツト、１６…モータ
駆動用の磁極列、１７…ポールセンサ用磁極列、
１８…速度検出用の磁極列、Ａ…モータ駆動用磁
極列の着磁方向、Ｂ…ポールセンサ用磁極列の着
磁方向、Ｃ…速度検出用磁極列の着磁方向。
Fig. 1 is a side sectional view of the main part of a conventional device, Fig. 2 is a side sectional view of the main part of an embodiment of the present invention, and Fig. 3 is a side sectional view showing the direction of magnetization of the rotor magnet. , FIG. 4 is a perspective view showing each magnetic pole row of the rotor magnet. 1...Rotating shaft, 2...Rotor yoke, 2a...Cylindrical part of rotor yoke, 2b...Brim part of rotor yoke,
3...Motor drive magnet, 4...Pole sensor magnet, 5...Speed detection magnet (FG
magnet), 6... substrate, 7... stator core,
8...Stator coil, 9...Mounting seat, 10...Caulking pin, 11...Pole sensor, 12...Speed detection conductor (FG pattern), 13...Bearing, 14...Housing, 15...Rotor magnet, 16...Motor drive Magnetic pole array, 17...Magnetic pole array for pole sensor,
18...Magnetic pole array for speed detection, A...Magnetization direction of the magnetic pole array for motor drive, B...Magnetization direction of the magnetic pole array for pole sensor, C...Magnetization direction of the magnetic pole array for speed detection.
Claims (1)
部を有する鍋状のロータヨークと、 このロータヨークの前記円筒部の内周に固着さ
れｍ極の磁極列を着磁したモータ駆動用マグネツ
トと、 前記ロータヨークのつば部にその内周部に沿つ
て順に固着され、ｍ極の磁極列に着磁したポール
センサ用マグネツトおよびｎ＞ｍであるｎ極の磁
極列を前記ポールセンサ用マグネツトの磁極列と
並列して着磁した速度検出用マグネツトと、 前記ロータヨークのつば部側にロータヨークと
空〓を介して対向して配設された基板と、 この基板上に前記モータ駆動用マグネツトと径
方向の細〓を対向して設けられ外周のスロツト内
にステータコイルを巻装したステータコアと、 前記基板上もしくは基板内に前記ポールセンサ
用マグネツトおよび速度検出用マグネツトに細〓
を介して設けられたポールセンサおよび速度検出
用導体とをそなえてなるブラシレスモータにおい
て、 異方性プラスチツク磁石を断面がＬ字状でかつ
リング状に形成するとともに、 その円筒部に前記モータ駆動用のｍ極の磁極列
を径方向に着磁し、 かつつば部の内周面に接した部分から前記ポー
ルセンサ用のｍ極の磁極列を着磁し、 これと前記速度検出用のｎ極の磁極列を並列し
て軸方向の外周側に着磁して 構成したロータマグネツトを前記ロータヨークの
円筒部およびつば部にとりつけたことを特徴とす
るブラシレスモータ。[Scope of Claims] 1. A pot-shaped rotor yoke that is fitted and fixed to a rotating shaft and has a flange at the tip of a cylindrical portion, and a magnetic pole array of m poles that is fixed to the inner circumference of the cylindrical portion of this rotor yoke and is magnetized. a motor drive magnet; a pole sensor magnet which is fixed in order to the brim of the rotor yoke along its inner circumference and magnetized into a magnetic pole array of m poles; and a magnetic pole array of n poles where n>m is attached to the pole. a speed detection magnet magnetized in parallel with the magnetic pole array of the sensor magnet; a board disposed on the flange side of the rotor yoke so as to face the rotor yoke with an air gap in between; a stator core with a stator coil wound in a slot on the outer periphery, and a stator core with a stator coil wound in a slot on the outer periphery;
In a brushless motor that is equipped with a pole sensor and a speed detection conductor provided through a pole sensor, an anisotropic plastic magnet is formed into an L-shaped cross section and a ring shape, and the cylindrical part is provided with a conductor for driving the motor. The magnetic pole array of m poles is magnetized in the radial direction, and the magnetic pole array of m poles for the pole sensor is magnetized from the part in contact with the inner peripheral surface of the collar part, and this and the magnetic pole array of m poles for the speed detection are magnetized in the radial direction. 1. A brushless motor characterized in that a rotor magnet constituted by magnetic pole arrays arranged in parallel and magnetized on the outer periphery side in the axial direction is attached to the cylindrical portion and the flange portion of the rotor yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6071082A JPS58179150A (en) | 1982-04-12 | 1982-04-12 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6071082A JPS58179150A (en) | 1982-04-12 | 1982-04-12 | Brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58179150A JPS58179150A (en) | 1983-10-20 |
| JPS6338948B2 true JPS6338948B2 (en) | 1988-08-02 |
Family
ID=13150110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6071082A Granted JPS58179150A (en) | 1982-04-12 | 1982-04-12 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58179150A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6188480U (en) * | 1984-11-12 | 1986-06-09 | ||
| JPS6271614U (en) * | 1985-10-24 | 1987-05-07 | ||
| JPS62176821U (en) * | 1986-04-28 | 1987-11-10 | ||
| JPS62176822U (en) * | 1986-04-28 | 1987-11-10 | ||
| JPS63109576U (en) * | 1987-01-09 | 1988-07-14 | ||
| JPH0715323Y2 (en) * | 1988-11-02 | 1995-04-10 | ダイキン工業株式会社 | Electric motor |
| JPH0613379U (en) * | 1992-07-09 | 1994-02-18 | 株式会社三協精機製作所 | Disk motor |
| DE202019105035U1 (en) * | 2019-09-12 | 2019-10-11 | Ebm-Papst St. Georgen Gmbh & Co. Kg | External rotor device with integrated sensor and use |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114934A (en) * | 1975-04-01 | 1976-10-09 | K I P:Kk | Exposure equipment for electronic copying machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193883U (en) * | 1982-06-17 | 1983-12-23 | 松下電器産業株式会社 | 2-phase brushless motor |
-
1982
- 1982-04-12 JP JP6071082A patent/JPS58179150A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114934A (en) * | 1975-04-01 | 1976-10-09 | K I P:Kk | Exposure equipment for electronic copying machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58179150A (en) | 1983-10-20 |
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