JP2985681B2 - Brushless motor - Google Patents
Brushless motorInfo
- Publication number
- JP2985681B2 JP2985681B2 JP23380794A JP23380794A JP2985681B2 JP 2985681 B2 JP2985681 B2 JP 2985681B2 JP 23380794 A JP23380794 A JP 23380794A JP 23380794 A JP23380794 A JP 23380794A JP 2985681 B2 JP2985681 B2 JP 2985681B2
- Authority
- JP
- Japan
- Prior art keywords
- brushless motor
- armature
- rotor
- armature core
- teeth
- 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 - Fee Related
Links
Landscapes
- Brushless Motors (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、CD−ROM駆動用ス
ピンドルモータなどに適用するブラシレスモータに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brushless motor applied to a spindle motor for driving a CD-ROM.
【0002】[0002]
【従来の技術】従来のディスク駆動用スピンドルモータ
に用いられるブラシレスモータにおいては、図6及び図
7に示すように、ロータ101の外周部に駆動用マグネ
ット102を固着し、駆動用マグネット102に対向す
る3個のティース103が夫々ロータ101の円周の接
線に対して直角方向になるように電機子コア104を配
設し、各ティース103に巻回した電機子コイル105
の一面をベース基板106に固着することによってステ
ータ107をベース基板106に固定して構成している
(例えば、実開平5−86151号公報参照)。なお、
108はヘッド構成体109の移動空間である。2. Description of the Related Art In a brushless motor used in a conventional disk drive spindle motor, as shown in FIGS. 6 and 7, a drive magnet 102 is fixed to an outer peripheral portion of a rotor 101 and is opposed to the drive magnet 102. The armature core 104 is disposed so that each of the three teeth 103 is perpendicular to the tangent to the circumference of the rotor 101, and the armature coil 105 wound around each of the teeth 103.
Is fixed to the base substrate 106 to fix the stator 107 to the base substrate 106 (for example, see Japanese Utility Model Laid-Open No. 5-86151). In addition,
Reference numeral 108 denotes a moving space for the head assembly 109.
【0003】[0003]
【発明が解決しようとする課題】ディスク駆動用スピン
ドルモータにあっては、組込む装置の小型化、高容量化
の要求により小型化、高速化が進んでいる。しかし、高
容量化に対応するには回転数を高速化し、同時に振動騒
音を小さくしなければならない。例えば、CD−ROM
駆動用スピンドルモータでは、所謂音楽用CD用回転数
の約4倍の1000〜2400rpm程度の高速回転が
要求される。また、CD−ROM駆動用スピンドルモー
タでは、CDの線速度を一定に保つよう制御するために
データトラックの半径に反比例して回転角速度を変化さ
せる必要がある。そこで、CLV(コンスタント リニ
ア ベロシティ)動作を行い、データのアクセス時間を
短くするため、回転数の変化を短時間で行わなければな
らず、頻繁に最大電流を電機子コイル105に供給する
ので電機子コイル105の発熱量が多くなる。With respect to the spindle motor for driving a disk, miniaturization and high-speed operation are progressing due to a demand for miniaturization and high capacity of a device to be incorporated. However, in order to cope with an increase in capacity, it is necessary to increase the rotation speed and reduce vibration noise. For example, CD-ROM
The driving spindle motor is required to rotate at a high speed of about 1000 to 2400 rpm, which is about four times as high as the so-called music CD rotation speed. In the CD-ROM drive spindle motor, it is necessary to change the rotational angular velocity in inverse proportion to the radius of the data track in order to control the linear velocity of the CD to be constant. Therefore, in order to shorten the data access time by performing a CLV (constant linear velocity) operation, the rotation speed must be changed in a short time, and the maximum current is frequently supplied to the armature coil 105. The amount of heat generated by the coil 105 increases.
【0004】しかし、従来のブラシレスモータにあって
は、電機子コイル105の一面がベース基板106に接
しているため放熱特性が悪いという問題点を有してい
た。また、ロータ101の円周の接線に対して直角方向
に形成した各ティース103に、電機子コイル105を
他の電機子コイル105に隣接するまで巻回することは
製造上困難で、電機子コイルのスペース効率を悪くして
いるという問題点を有していた。また、ティース103
の先端部103aはT字状をなしているため、電機子コ
イル105を個々のティース毎に巻回しなければなら
ず、製造効率及びステータ107の材料の歩留りも悪い
ものであった。更に、ロータ101の回転位置を検出す
る位置検出手段を構成する磁気センサ(例えば、ホール
素子)が電機子コイル105の駆動電流の影響を受け振
動や騒音が大きくなったり、ロータ101に対する電機
子コア104の取付位置によりコギングが大きくなった
り、高速化に伴い振動や騒音が大きくなったりするとい
う問題点を有していた。However, the conventional brushless motor has a problem that heat radiation characteristics are poor because one surface of the armature coil 105 is in contact with the base substrate 106. In addition, it is difficult to wind the armature coil 105 around each of the teeth 103 formed at right angles to the tangent of the circumference of the rotor 101 until the armature coil 105 is adjacent to the other armature coil 105. However, there is a problem that the space efficiency is deteriorated. Also, teeth 103
Since the tip 103a has a T-shape, the armature coil 105 must be wound for each individual tooth, and the production efficiency and the yield of the material of the stator 107 are poor. Further, a magnetic sensor (for example, a Hall element) constituting a position detecting means for detecting the rotational position of the rotor 101 is affected by the drive current of the armature coil 105 to increase vibration and noise. There is a problem that cogging increases depending on the mounting position of the 104, and vibration and noise increase with an increase in speed.
【0005】本発明は、従来の技術が有するこのような
問題点に鑑みてなされたものであり、その目的とすると
ころは、放熱特性や振動・騒音特性の向上が図れ、コギ
ングが小さいブラシレスモータを提供しようとするもの
である。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. It is an object of the present invention to provide a brushless motor having improved heat radiation characteristics, vibration and noise characteristics and small cogging. It is intended to provide.
【0006】[0006]
【課題を解決するための手段】上記課題を解決すべく本
発明は、外周部に駆動用マグネットを固着したロータ
と、このロータの位置を検出する位置検出手段と、この
位置検出手段の出力に応じて電機子コイルに流す駆動電
流を制御する駆動手段と、ヘッド構成体の移動空間部分
以外の空間に3個のティースを形成した電機子コアと前
記電機子コイルを備えたステータと、前記電機子コアの
配置スペース以外で前記ロータを囲むように形成したシ
ールドヨークから成るブラシレスモータにおいて、前記
電機子コアの中央のティースを前記ロータの円周の接線
に対して直角方向に配設すると共に他のティースを前記
中央のティースと平行で且つ同一の幅で前記駆動用マグ
ネットの外周面に延在させて略E型形状に形成し、前記
電機子コイルは夫々ボビンに巻回して前記各ティースに
嵌挿したものである。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a rotor having a driving magnet fixed to an outer peripheral portion, a position detecting means for detecting the position of the rotor, and an output of the position detecting means. A driving means for controlling a driving current to flow through the armature coil in accordance with the armature coil; a stator having the armature coil formed with three teeth in a space other than the moving space portion of the head structure; and a stator having the armature coil; In a brushless motor including a shield yoke formed so as to surround the rotor in a space other than the space where the armature core is arranged, a center tooth of the armature core is arranged in a direction perpendicular to a tangent to a circumference of the rotor, and Are formed in a substantially E-shape by extending the outer peripheral surface of the driving magnet in parallel with and at the same width as the central tooth, and the armature coils are respectively formed. The wound in the bottle is obtained fitted to the teeth.
【0007】前記位置検出手段は、前記電機子コアと電
気角で120度以上離して配置すると良い。It is preferable that the position detecting means is disposed at an electrical angle of 120 degrees or more from the armature core.
【0008】前記電機子コイルを巻回した前記ボビンと
前記ティースに、前記ボビンの抜けを防止する抜け防止
機構を設けることも出来る。The bobbin around which the armature coil is wound and the teeth may be provided with a detachment preventing mechanism for preventing the bobbin from coming off.
【0009】前記電機子コアを取付ける金属材料製の取
付台を設けると良い。It is preferable to provide a mounting base made of a metal material for mounting the armature core.
【0010】前記電機子コアの取付位置が調整可能な取
付位置調整手段を設けることも出来る。[0010] A mounting position adjusting means for adjusting the mounting position of the armature core may be provided.
【0011】[0011]
【作用】電機子コイルから発生する熱の放熱特性や振動
・騒音特性が向上し、コギングが小さくなる。また、電
機子コイルの製造が容易化されると共に、ティースに電
機子コイルが容易に組付けられる。The heat radiation characteristics, vibration and noise characteristics of heat generated from the armature coil are improved, and cogging is reduced. Further, the manufacture of the armature coil is facilitated, and the armature coil is easily assembled to the teeth.
【0012】[0012]
【実施例】以下に本発明の実施例を添付図面に基づいて
説明する。ここで、図1は本発明に係るブラシレスモー
タの概要平面図、図2は同じく概要側面図、図3は電機
子コイルと電機子コアと取付台の組付関係を示す分解斜
視図、図4はボビンの断面図、図5はティースと駆動用
マグネットとホール素子の位置関係を示す説明図であ
る。Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a schematic plan view of a brushless motor according to the present invention, FIG. 2 is a schematic side view of the same, FIG. 3 is an exploded perspective view showing an assembling relationship between an armature coil, an armature core and a mounting base, and FIG. FIG. 5 is a cross-sectional view of the bobbin, and FIG. 5 is an explanatory diagram showing a positional relationship among the teeth, the driving magnet, and the Hall element.
【0013】図1及び図2に示すように、ブラシレスモ
ータ1は、CD−ROM用で4倍速用ブラシレスモータ
であり、外周部に16極の磁極を着磁した駆動用マグネ
ット2を取付けたロータ3と、ロータ3の回転位置を検
出する位置検出手段たるホール素子4と、ホール素子4
の出力に応じて電機子コイル5に流す駆動電流を制御す
る駆動手段(不図示)と、電機子コア6と電機子コイル
5から成るステータ7と、電機子コア6の配置スペース
以外でロータ3を囲むように形成したシールドヨーク8
を備えて構成されている。As shown in FIGS. 1 and 2, a brushless motor 1 is a quadruple speed brushless motor for a CD-ROM, and a rotor having a driving magnet 2 magnetized with 16 magnetic poles on the outer periphery. 3, a Hall element 4 serving as a position detecting means for detecting the rotational position of the rotor 3, and a Hall element 4
Drive means (not shown) for controlling the drive current flowing through the armature coil 5 in accordance with the output of the armature coil 5, a stator 7 comprising the armature core 6 and the armature coil 5, and the rotor 3 Yoke 8 formed so as to surround
It is provided with.
【0014】ロータ3は、先端にCD用ターンテーブル
(不図示)を取付けた回転自在なシャフト10に一体的
に結合している。The rotor 3 is integrally connected to a rotatable shaft 10 having a CD turntable (not shown) attached to the tip.
【0015】ステータ7は、3個のティース11,1
2,13を有する電機子コア6と、樹脂製のボビン14
に巻回した電機子コイル5から成り、各ティース11,
12,13にボビン14を嵌挿して形成されている。電
機子コア6は、円盤状の記録媒体であるCD−ROMの
記録内容を読取るヘッドと一体に移動するヘッド構成体
(不図示)の移動空間部分S以外の空間に配設されてい
る。The stator 7 has three teeth 11, 1
Armature core 6 having resin 13 and bobbin 14 made of resin
Armature coil 5 wound around each tooth 11,
A bobbin 14 is inserted into the holes 12 and 13. The armature core 6 is provided in a space other than the moving space portion S of a head structure (not shown) that moves integrally with a head that reads recorded contents of a CD-ROM, which is a disk-shaped recording medium.
【0016】電機子コア6は、中央のティース11をロ
ータ3の円周の接線に対して直角方向に配設すると共
に、他のティース12,13を中央のティース11と平
行で且つ同一の幅Wにして駆動用マグネット2の外周面
に延在させることにより、全体として略E型形状に形成
されている。しかして、このように電機子コア6を形成
することにより、製造時に複数の電機子コア6同士を互
いに向い合せにした材料取りが出来るため歩留りが向上
する。The armature core 6 has a central tooth 11 disposed in a direction perpendicular to a tangent to the circumference of the rotor 3 and other teeth 12, 13 parallel to the central tooth 11 and having the same width. By making it W and extending on the outer peripheral surface of the driving magnet 2, the whole is formed in a substantially E-shape. Thus, by forming the armature core 6 in this manner, a material can be obtained in which a plurality of armature cores 6 face each other at the time of manufacturing, so that the yield is improved.
【0017】電機子コイル5をボビン14を介して各テ
ィース11,12,13に巻回するため、ティース1
1,12,13に直接電機子コイル5を巻回するのでは
なく、ボビン14に単独で電機子コイル5を巻回するこ
とが出来るので、隣接する電機子コイル5に接するまで
巻数を増やすことが可能になり、電機子コイルのスペー
ス効率が向上すると共に組立作業性が向上する。Since the armature coil 5 is wound around each of the teeth 11, 12, 13 via the bobbin 14, the teeth 1
The armature coil 5 can be wound alone on the bobbin 14 instead of directly winding the armature coil 5 on 1, 12, and 13. Therefore, the number of turns must be increased until the armature coil 5 contacts the adjacent armature coil 5. This improves the space efficiency of the armature coil and improves the workability of assembly.
【0018】また、図3及び図4に示すように、筒状の
ボビン14の一端面には内方に向かって凸部14aが、
ティース11,12,13には凸部14aに対応して凹
部11a,12a,13aが形成されている。従って、
電機子コイル5を巻回したボビン14がティース11,
12,13に嵌挿されると、凸部14aが弾性変形して
凹部11a,12a,13aに係合し、凸部14aと凹
部11a,12a,13aで抜け防止機構が構成され
る。As shown in FIGS. 3 and 4, one end surface of the cylindrical bobbin 14 has an inwardly projecting portion 14a.
The teeth 11, 12 and 13 are formed with concave portions 11 a, 12 a and 13 a corresponding to the convex portions 14 a. Therefore,
The bobbin 14 around which the armature coil 5 is wound is the tooth 11,
When the projections 14a are inserted into the projections 12 and 13, the projections 14a are elastically deformed and engaged with the recesses 11a, 12a and 13a, and the projections 14a and the recesses 11a, 12a and 13a constitute a slip-out prevention mechanism.
【0019】ステータ7は、金属材料で形成した取付台
16を介してベース基板17に電機子コア6を取付ける
ことで固定されている。電機子コア6と取付台16は、
図3に示すように、夫々の対応する取付孔6a,16a
を合せ、ねじ18を取付孔6a,16aに差込んでねじ
18をベース基板17のねじ孔に螺合することによって
ベース基板17に固定される。従って、電機子コイル5
はベース基板17に接することなく浮いた状態で固定さ
れる。The stator 7 is fixed by attaching the armature core 6 to a base substrate 17 via a mount 16 made of a metal material. The armature core 6 and the mounting base 16
As shown in FIG. 3, each corresponding mounting hole 6a, 16a
Are fixed to the base substrate 17 by inserting the screws 18 into the mounting holes 6 a and 16 a and screwing the screws 18 into the screw holes of the base substrate 17. Therefore, the armature coil 5
Is fixed in a floating state without contacting the base substrate 17.
【0020】電機子コア6の取付孔6aは、ねじ18の
軸径に対して大きくしてあり、コギングが小さくなるよ
うな位置にロータ3との空隙調整をして電機子コア6を
ねじ18で固定出来る。従って、取付孔6aとねじ18
で電機子コア6の取付位置が調整可能な取付位置調整手
段が構成される。The mounting hole 6a of the armature core 6 is made larger with respect to the shaft diameter of the screw 18, and the gap between the armature core 6 and the rotor 3 is adjusted to a position where cogging is reduced so that the armature core 6 is screwed. Can be fixed with Therefore, the mounting hole 6a and the screw 18
This constitutes a mounting position adjusting means capable of adjusting the mounting position of the armature core 6.
【0021】3個のティース11,12,13は、図5
に示すように、駆動用マグネット2と所定の空隙を介し
て対向する中央のティース11を基準にロータ3の中心
から見て、左右60度の位置に他のティース12,13
の先端が駆動用マグネット2と所定の空隙を介して対向
するように配置されている。The three teeth 11, 12, 13 are shown in FIG.
As shown in the figure, the other teeth 12 and 13 are located at 60 degrees left and right with respect to the center of the rotor 3 with respect to the center tooth 11 opposed to the driving magnet 2 via a predetermined gap.
Is arranged so that the tip of the drive magnet 2 faces the drive magnet 2 via a predetermined gap.
【0022】また、3個のホール素子4は、図5に示す
ように、中央のティース11を基準にロータ3の中心か
ら見て、ベース基板17上の105度、157.5度、
210度の位置、又は−105度、−157.5度、−
210度の位置に配置されている。As shown in FIG. 5, the three Hall elements 4 are arranged at 105 degrees, 157.5 degrees on the base substrate 17 with respect to the center of the teeth 11 as viewed from the center of the rotor 3.
210 degree position, or -105 degree, -157.5 degree,-
It is arranged at a position of 210 degrees.
【0023】なお、本実施例では、ロータ3の回転位置
を検出する位置検出手段としてホール素子4を使用した
が、他の方法として、例えば電機子コイル5に発生する
誘導電圧に応じてロータ3の位置検出信号を生成するよ
うにしても本発明の特有の効果が得られる。In this embodiment, the Hall element 4 is used as the position detecting means for detecting the rotational position of the rotor 3. However, as another method, for example, the rotor 3 is controlled in accordance with an induced voltage generated in the armature coil 5. The unique effect of the present invention can be obtained even if the position detection signal is generated.
【0024】シールドヨーク8は、駆動用マグネット2
の漏洩磁束がヘッドの動作に影響を与えないようにする
ために設けられ、前記したように電機子コア6の配置ス
ペース以外でロータ3を囲むように配置されている。The shield yoke 8 is used to drive the magnet 2
Is provided to prevent the leakage magnetic flux from affecting the operation of the head, and is arranged so as to surround the rotor 3 in a space other than the space where the armature core 6 is arranged as described above.
【0025】以上のように構成されたブラシレスモータ
1においては、3個のホール素子4から発生するロータ
3の回転位置を検出する位置信号が駆動手段に入力さ
れ、駆動手段により駆動電流が電機子コイル5に供給さ
れて磁界が発生し、発生した磁界と駆動用マグネット2
の磁極との相互作用によって連続的な回転力がロータ3
に生じ、ロータ3が所望な角速度で回転する。In the brushless motor 1 configured as described above, a position signal for detecting the rotational position of the rotor 3 generated from the three Hall elements 4 is inputted to the driving means, and the driving current is supplied to the armature by the driving means. The magnetic field is generated by being supplied to the coil 5 and the generated magnetic field and the driving magnet 2
Of the rotor 3 due to the interaction with the magnetic poles
And the rotor 3 rotates at a desired angular velocity.
【0026】[0026]
【発明の効果】以上説明したように本発明によれば、電
機子コイルは夫々ボビンに巻回した後に、略E型形状に
形成したティースにボビンを嵌挿するので、隣接する電
機子コイルに接するまで巻数を増やすことが可能にな
り、電機子コイルのスペース効率が向上する。また、単
独でボビンに電機子コイルを巻回するので、巻回作業の
作業性が向上する。As described above, according to the present invention, the armature coils are wound around the bobbins, and then the bobbins are inserted into the teeth formed in a substantially E-shape. It is possible to increase the number of turns until they come into contact with each other, and the space efficiency of the armature coil is improved. In addition, since the armature coil is wound around the bobbin alone, the workability of the winding operation is improved.
【0027】位置検出手段を電機子コアと電気角で12
0度以上離して配置したので、振動や騒音が低減され
る。The position detecting means is an electric angle of 12 with the armature core.
Since they are arranged at a distance of 0 degrees or more, vibration and noise are reduced.
【0028】ボビンの抜けを防止する抜け防止機構を設
けたので、ボビンが確実にティースに固定される。Since the mechanism for preventing the bobbin from coming off is provided, the bobbin is securely fixed to the teeth.
【0029】また、電機子コアを取付ける取付台を設
け、この取付台を金属材料で構成したので、電機子コイ
ルより発生する熱の放熱特性が向上する。Further, since the mounting base for mounting the armature core is provided and the mounting base is made of a metal material, the heat radiation characteristic of the heat generated from the armature coil is improved.
【0030】電機子コアの取付位置調整手段を設けたの
で、ロータとの空隙調整によりコギングを小さくするこ
とが出来る。Since the means for adjusting the mounting position of the armature core is provided, cogging can be reduced by adjusting the gap with the rotor.
【図1】本発明に係るブラシレスモータの概要平面図FIG. 1 is a schematic plan view of a brushless motor according to the present invention.
【図2】本発明に係るブラシレスモータの概要側面図FIG. 2 is a schematic side view of a brushless motor according to the present invention.
【図3】電機子コイルと電機子コアと取付台の組付関係
を示す分解斜視図FIG. 3 is an exploded perspective view showing an assembling relationship between an armature coil, an armature core, and a mounting base.
【図4】ボビンの取付状態を示す部分拡大断面図FIG. 4 is a partially enlarged cross-sectional view showing a mounted state of a bobbin.
【図5】ティースと駆動用マグネットとホール素子の位
置関係を示す説明図FIG. 5 is an explanatory diagram showing a positional relationship among a tooth, a driving magnet, and a Hall element.
【図6】従来のブラシレスモータの概要平面図FIG. 6 is a schematic plan view of a conventional brushless motor.
【図7】従来のブラシレスモータの概要側面図FIG. 7 is a schematic side view of a conventional brushless motor.
【符号の説明】 1…ブラシレスモータ、2…駆動用マグネット、3…ロ
ータ、4…ホール素子(位置検出手段)、5…電機子コ
イル、6…電機子コア、6a…取付孔、7…ステータ、
8…シールドヨーク、10…シャフト、11,12,1
3…ティース、11a,12a,13a…凹部、14…
ボビン、14a…凸部、16…取付台、16a…取付
孔、17…ベース基板、18…ねじ。[Description of References] 1 ... brushless motor, 2 ... driving magnet, 3 ... rotor, 4 ... hall element (position detecting means), 5 ... armature coil, 6 ... armature core, 6a ... mounting hole, 7 ... stator ,
8 ... Shield yoke, 10 ... Shaft, 11, 12, 1
3 ... teeth, 11a, 12a, 13a ... recesses, 14 ...
Bobbin, 14a: convex portion, 16: mounting base, 16a: mounting hole, 17: base substrate, 18: screw.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) H02K 29/00 H02K 21/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) H02K 29/00 H02K 21/00
Claims (5)
ータと、このロータの位置を検出する位置検出手段と、
この位置検出手段の出力に応じて電機子コイルに流す駆
動電流を制御する駆動手段と、ヘッド構成体の移動空間
部分以外の空間に3個のティースを形成した電機子コア
と前記電機子コイルを備えたステータと、前記電機子コ
アの配置スペース以外で前記ロータを囲むように形成し
たシールドヨークから成るブラシレスモータにおいて、
前記電機子コアの中央のティースを前記ロータの円周の
接線に対して直角方向に配設すると共に他のティースを
前記中央のティースと平行で且つ同一の幅で前記駆動用
マグネットの外周面に延在させて略E型形状に形成し、
前記電機子コイルは夫々ボビンに巻回して前記各ティー
スに嵌挿したことを特徴とするブラシレスモータ。A rotor having a driving magnet fixed to an outer peripheral portion thereof; a position detecting means for detecting a position of the rotor;
A drive unit for controlling a drive current flowing through the armature coil in accordance with the output of the position detection unit, an armature core having three teeth formed in a space other than the moving space portion of the head assembly, and the armature coil. A brushless motor comprising a stator provided and a shield yoke formed so as to surround the rotor in a space other than the arrangement space of the armature core,
A central tooth of the armature core is disposed in a direction perpendicular to a tangent of a circumference of the rotor, and other teeth are parallel to the central tooth and have the same width on the outer peripheral surface of the driving magnet. Extended to form a substantially E-shaped shape,
A brushless motor, wherein the armature coils are wound around bobbins, respectively, and fitted into the respective teeth.
電気角で120度以上離して配置した請求項1記載のブ
ラシレスモータ。2. The brushless motor according to claim 1, wherein said position detecting means is arranged at an electrical angle of 120 degrees or more from said armature core.
と前記ティースに、前記ボビンの抜けを防止する抜け防
止機構を設けた請求項1記載のブラシレスモータ。3. The brushless motor according to claim 1, wherein said bobbin around which said armature coil is wound and said teeth are provided with a disengagement prevention mechanism for preventing the bobbin from disengaging.
取付台を設けた請求項2記載のブラシレスモータ。4. The brushless motor according to claim 2, further comprising a metal mounting base for mounting said armature core.
取付位置調整手段を設けた請求項4記載のブラシレスモ
ータ。5. The brushless motor according to claim 4, further comprising mounting position adjusting means for adjusting a mounting position of said armature core.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23380794A JP2985681B2 (en) | 1994-09-28 | 1994-09-28 | Brushless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23380794A JP2985681B2 (en) | 1994-09-28 | 1994-09-28 | Brushless motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0898487A JPH0898487A (en) | 1996-04-12 |
JP2985681B2 true JP2985681B2 (en) | 1999-12-06 |
Family
ID=16960895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23380794A Expired - Fee Related JP2985681B2 (en) | 1994-09-28 | 1994-09-28 | Brushless motor |
Country Status (1)
Country | Link |
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JP (1) | JP2985681B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5332082B2 (en) * | 2006-06-07 | 2013-11-06 | ダイキン工業株式会社 | motor |
JP2018074811A (en) * | 2016-10-31 | 2018-05-10 | 株式会社テージーケー | Motor device |
JP2019103294A (en) * | 2017-12-05 | 2019-06-24 | マブチモーター株式会社 | Single-phase motor |
JP7388602B1 (en) * | 2022-03-09 | 2023-11-29 | 株式会社プロテリアル | rotating electric machine |
-
1994
- 1994-09-28 JP JP23380794A patent/JP2985681B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JPH0898487A (en) | 1996-04-12 |
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