JPS58224551A - Brushless motor - Google Patents

Brushless motor

Info

Publication number
JPS58224551A
JPS58224551A JP10941882A JP10941882A JPS58224551A JP S58224551 A JPS58224551 A JP S58224551A JP 10941882 A JP10941882 A JP 10941882A JP 10941882 A JP10941882 A JP 10941882A JP S58224551 A JPS58224551 A JP S58224551A
Authority
JP
Japan
Prior art keywords
brush
assembly
fixing body
bent
slip ring
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.)
Granted
Application number
JP10941882A
Other languages
Japanese (ja)
Other versions
JPS6217947B2 (en
Inventor
Takao Yoshitsugu
孝雄 吉嗣
Takao Urakawa
浦川　隆男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10941882A priority Critical patent/JPS58224551A/en
Publication of JPS58224551A publication Critical patent/JPS58224551A/en
Publication of JPS6217947B2 publication Critical patent/JPS6217947B2/ja
Granted legal-status Critical Current

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
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)

Abstract

PURPOSE:To facilitate the unitization of assembling a brush by associating in advance a brush assembly in a metal housing and a slip ring on a turntable mounting stand forming a rotor assembly. CONSTITUTION:A slip ring 18 is provided on a turntable mounting stand 2, and a brush assembly is provided in the vicinity of the end of the turntable mounting stand side of a metal housing 7. When a rotor assembly I and a stator assembly IIare associated with a bracket assembly III, the brush 19 of a brush assembly IVis contacted with the slip ring 18. Since the part assembly such as the rotor assembly and the stator assembly forming a brushless motor can be then divided, the structure becomes simple, and the productivity can be significantly improved.

Description

【発明の詳細な説明】 本発明はＶＨＤ方式のビデオディスクのターンテーブル
駆動用ブラシレスモータに関するもので、ターンテーブ
ルとシャーシー（すなワチメタルハウジング）との間の
導通を簡単々構成で得ることを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brushless motor for driving a turntable for a VHD video disc, and provides electrical continuity between a turntable and a chassis (ie, a metal housing) with a simple configuration. purpose.

ＶＨＤ方式のビデオディスクは、静電容量を検出するこ
とによってディスク盤の信号を画面として表現する装置
である。針先とディスク盤の静電容量を検出するため、
ディスクと接するターンテーブルの電位が刻々変化する
場合、ビデオディスクの画質を悪化させることは、一般
に知られている。したがって上記問題を解決するだめに
は、ターンテーブルとシャーシー（即ちメタルハウジン
５ページ グ）との間の導通を安定よく行う必要があるが、回転軸
とメタルの間に介在する潤滑油のため、特別の導通装置
がなければこの問題を解決できない。A VHD video disc is a device that expresses a signal on a disc as a screen by detecting capacitance. To detect the capacitance between the needle tip and the disk,
It is generally known that the image quality of a video disc deteriorates if the potential of the turntable in contact with the disc changes from moment to moment. Therefore, in order to solve the above problem, it is necessary to ensure stable conduction between the turntable and the chassis (i.e. metal housing 5 pages), but due to the lubricating oil interposed between the rotating shaft and the metal, special This problem cannot be solved without a conduction device.

以下、従来例を第１図を参照して説明する。A conventional example will be described below with reference to FIG.

第１図において、ロータ組立Ｉは、回転軸１と回転軸１
に固定されたターンテーブル取付台２又はターンテーブ
ル１３と、ターンテーブル取付台２に固定されたロータ
ヨーク３と、ロータヨーク３の内周面に固着された駆動
マグネット４及び速度検出の為の速度検出マグネット８
とから構成される。ステータ組立■は駆動マグネット４
と径方向に所定空隙保って対向配置されたステータコア
５とステータ巻線１２とから構成され、プラケット組立
■に固定されている０ブラケット組立■は回転軸１を回
転自在に軸支するメタル１４．１５と、メタル１４．１
５が圧入固定されたメタルノ・ウジング７と、モータを
シャーシに固定する為の７ランジ９と、回転軸１を支持
する為のスラスト受１１ａを有する底板１１とから構成
される。メタル１４側にはロータ組立■の抜は防止用Ｃ
ＩＪング６を設６ベージ け、またターンテーブル取付台２とメタルハウジング７
との導通の為、回転軸１にスリップリング１６が圧入さ
れ、底板１１にはスリップリング１６を摺動するだめの
刷子組立１７が固定されている。In FIG. 1, a rotor assembly I includes a rotating shaft 1 and a rotating shaft 1.
A turntable mount 2 or a turntable 13 fixed to the turntable mount 2 or a turntable 13, a rotor yoke 3 fixed to the turntable mount 2, a drive magnet 4 fixed to the inner peripheral surface of the rotor yoke 3, and a speed detection magnet for speed detection. 8
It consists of Stator assembly ■ is drive magnet 4
The bracket assembly (2) is composed of a stator core 5 and a stator winding 12 which are arranged facing each other with a predetermined gap in the radial direction, and is fixed to the bracket assembly (2). 15 and metal 14.1
The rotary shaft 1 is composed of a metal housing 7 to which a motor 5 is press-fitted, a flange 9 for fixing the motor to the chassis, and a bottom plate 11 having a thrust bearing 11a for supporting the rotating shaft 1. There is a C on the metal 14 side to prevent the rotor assembly from being removed.
Install the IJ ring 6, and also install the turntable mounting base 2 and metal housing 7.
A slip ring 16 is press-fitted onto the rotating shaft 1 for electrical continuity with the rotary shaft 1, and a brush assembly 17 on which the slip ring 16 slides is fixed to the bottom plate 11.

なお、１ｏは位置検出素子取付と速度検出を行なうだめ
のプリント基板である。Note that 1o is a printed circuit board on which a position detection element is attached and speed detection is performed.

上記従来の構成においてスリップリング１６は、ロータ
組立■をブラケット組ノ月ＩＩに組み込んだ後、圧入、
接着又はスリップリング１６にネジ穴を設け、所定治具
を用いてビス止めする等の方法に依り回転軸１に固定さ
れる為に、メタル１４．１５に力が加わったり、接着剤
が附着しない様に配慮する必要があり、又刷子１７の固
定された底板１１をメタルハウジング７に取り付ける際
、刷子１７をスリップリング１６の外径以上に径方向に
開いた状態で挿入し、この時、スラスト受１１ａに息下
されたグリースの附着々きよう配慮しなければならない
など作業性に問題がある。さらにスリップリング１６は
、導電性及び摺動性に良好な金属を用いる事と、第１図
に示す如き円筒状のスリノ７ページ プリング１６は、切削に依り製造される事など、コスト
上昇の要因があった。In the above conventional configuration, the slip ring 16 is press-fitted after the rotor assembly ■ is assembled into the bracket assembly Nozuki II.
Since it is fixed to the rotating shaft 1 by adhesion or by providing a screw hole in the slip ring 16 and screwing it using a specified jig, no force is applied to the metal 14 or 15, and no adhesive adheres to it. Also, when attaching the bottom plate 11 to which the brush 17 is fixed to the metal housing 7, it is necessary to insert the brush 17 with it opened in the radial direction beyond the outer diameter of the slip ring 16, and at this time, the thrust There are problems in workability, such as the need to take care to ensure that the grease applied to the receiver 11a is deposited steadily. Furthermore, the slip ring 16 uses a metal with good conductivity and sliding properties, and the cylindrical slip ring 16 shown in FIG. 1 is manufactured by cutting, which are factors that increase the cost. was there.

本発明は、上記従来の欠点を解消するもので、以下にそ
の実施例を第２図〜第１１図を参照して説明する。尚、
従来例と同一部品同一構成のものについては説明を省略
する。第２図において、刷子組立■はメタルハウジング
７に、スリップリング１８はターンテーブル取付台２に
固定されている。The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 2 to 11. still,
Descriptions of parts that have the same components and configurations as those of the conventional example will be omitted. In FIG. 2, the brush assembly (2) is fixed to the metal housing 7, and the slip ring 18 is fixed to the turntable mounting base 2.

なお、上述の刷子組立■は第３図に示す如く刷子固定体
２０とからなり、刷子１９の一端とメタルハウジング７
とは電気的に導通されており、刷子１９の他端は、ター
ンテーブル取付台２に圧入又は奴めによって固定された
スリップリング１８を摺動するような構成になっている
。従ってこの構成によれば、刷子組立■はメタルハウジ
ング７に、スリップリング１８は、ロータ・組立Ｉを構
成するターンテーブル取付台２に各々あらかじめ組立て
られ構成部品組立が分割されているので、構成が単純で
あり作業能率の非常な向上がある。構成部品も単純とな
り作業能率および材料費が安価であ特開昭５８−２２４
５５１（３） るなと、構成の単純化によるいろいろ々効果を生ずる。The above-mentioned brush assembly (2) consists of a brush fixing body 20 as shown in FIG.
The other end of the brush 19 is configured to slide on a slip ring 18 that is fixed to the turntable mounting base 2 by press fitting or screwing. Therefore, according to this configuration, the brush assembly (2) is pre-assembled to the metal housing 7, and the slip ring 18 is pre-assembled to the turntable mounting base 2 that constitutes the rotor/assembly I. Since the component assembly is divided, the configuration is It is simple and greatly improves work efficiency. Components are simple, work efficiency and material costs are low, and JP-A-58-224
551(3) Various effects are produced by simplifying the structure.

第３図〜第１１図は刷子組立ＩＶの固定方法の実施例を
示し、以下者々の固定法について説明する。FIGS. 3 to 11 show embodiments of the method of fixing the brush assembly IV, and these methods of fixing will be described below.

第３図と第４図は刷子組立ＩＶの固定方法の第１の実施
例である。刷子１９のスリップリング１８と接触する部
分１９ｂと反対側の端部をＬ型に回転軸方向に折り曲げ
た部分１９ａをあらかじめメタルハウジング７に圧入さ
れた刷子固定体２０の内周面に位置する回転軸方向溝２
０　ａに挿入後、刷子固定体２ｏの外周面から内周面に
向かって設けたタップ穴２１ａを通して固定ビス２１を
締め付ける事によって刷子折り曲げ部（１９ａ　）をメ
タルハウジング７に接触させて導通を得る構成になって
いる。3 and 4 show a first embodiment of the method of fixing the brush assembly IV. A portion 19a of the brush 19, which has an end opposite to the portion 19b that contacts the slip ring 18, is bent into an L shape in the direction of the rotating shaft, and is located on the inner circumferential surface of the brush fixing body 20, which is press-fitted into the metal housing 7 in advance. Axial groove 2
After inserting into the brush fixing body 2o, the fixing screw 21 is tightened through the tap hole 21a provided from the outer circumferential surface to the inner circumferential surface of the brush fixing body 2o, thereby bringing the brush bent part (19a) into contact with the metal housing 7 to obtain electrical continuity. It is configured.

第５図〜第６図は刷子組立■の固定の第２の実施例であ
る。刷子２２のスリップリング１８と摺動する部分２２
ｃと反対側の端部をＬ形に回転軸方向に折り曲げだ部分
２２ａを刷子固定体２３の外周部に設けた溝部２３ｂに
接触させ、また刷子９ベージ ２２の小穴２２ｂを刷子固定体２３の端面に設けられた
突起２３ａに嵌合し、突起２３ａを熱溶着することによ
って、刷子２２を刷子固定体２３に固定する。其の後、
第６図に示されるように突起２３ａと反対の面の方向に
向かって刷子折り曲げ部２２ａを折り曲げ、さらに刷子
固定体２３の内周面に設けた溝部２３ａの端面に沿って
折り曲げた後、上記の様に構成された刷子組立■■をメ
タルハウジング７に圧入する。この構成においてメタル
ハウジング７と刷子固定体２３の内周面溝部２３ａ端面
の間の刷子折り曲り曲げ部２２ａのバネ圧によって刷子
折り曲げ部２２ａをメタルハウジング７に接触させて、
導通を得ることができる。Figures 5 and 6 show a second embodiment of fixing the brush assembly (2). Portion 22 of brush 22 that slides on slip ring 18
The end opposite to c is bent into an L shape in the direction of the rotation axis, and the part 22a is brought into contact with the groove 23b provided on the outer periphery of the brush fixing body 23, and the small hole 22b of the brush 9 page 22 is inserted into The brush 22 is fixed to the brush fixing body 23 by fitting into the protrusion 23a provided on the end face and heat-welding the protrusion 23a. After that,
As shown in FIG. 6, the brush bent portion 22a is bent in the direction opposite to the protrusion 23a, and further bent along the end surface of the groove portion 23a provided on the inner circumferential surface of the brush fixing body 23, and then the above-mentioned Press-fit the brush assembly ■■ configured as shown in the figure into the metal housing 7. In this configuration, the brush bent portion 22a is brought into contact with the metal housing 7 by the spring pressure of the brush bent portion 22a between the metal housing 7 and the end face of the inner circumferential groove portion 23a of the brush fixing body 23,
Continuity can be obtained.

第７〜第８図は刷子組立■の固定方法の第３の実施例で
あり、第２の実施例の刷子固定体２３の外周面の溝２３
ｂを取り除き、第７図に示されるように刷子固定体２６
の外周面と内周面の中央付近に設けた軸方向の長方形穴
２５ａを設け、長方鴇穴２５ａに刷子折り曲げ部２４＆
を挿入する点以外は、第２の実施例と同様であるので説
明を省１０ページ 略する。なお、刷子固定体２６の端面の突起２５ｃの溶
着による刷子２４の固定はなくても可能であるＯ 第９図と第１０図は刷子組立■の固定方法の第４の実施
例である。刷子２６のスリップリング１８と摺動する部
分２６ｂと反対側の端部をｖ型に折り曲げて、刷子折り
曲げ部２６ａの先端を刷子固定体２７の内周面に設けら
れた溝部２７ａの端面ざ から刷子固定体２７の内周面ノリ、少し突出するように
刷子折り曲げ部２６ａを刷子固定体２７と一体成型によ
って刷子組立ＴＶを構成し、メタルハウジング７に圧入
することによって刷子固定体２７の溝部２７ａより突出
している刷子折り曲げ部２６ａのバネ圧で利用して刷子
２６とメタルハウジング７を導通させることができる。7 and 8 show a third embodiment of the method of fixing the brush assembly (1), in which the grooves 23 on the outer circumferential surface of the brush fixing body 23 of the second embodiment are shown.
b is removed and the brush fixing body 26 is removed as shown in FIG.
A rectangular hole 25a in the axial direction is provided near the center of the outer circumferential surface and the inner circumferential surface of the brush bending portion 24 &
Since this is the same as the second embodiment except for the insertion of , the explanation will be omitted and omitted on page 10. Note that it is possible to fix the brush 24 without welding the protrusion 25c on the end surface of the brush fixing body 26. FIGS. 9 and 10 show a fourth embodiment of the method for fixing the brush assembly (2). The end of the brush 26 opposite to the portion 26b that slides on the slip ring 18 is bent into a V shape, and the tip of the brush bent portion 26a is inserted from the end surface of the groove 27a provided on the inner peripheral surface of the brush fixing body 27. The brush assembly TV is configured by integrally molding the brush bending portion 26a with the brush fixing body 27 so as to protrude slightly from the inner peripheral surface of the brush fixing body 27, and by press-fitting it into the metal housing 7, the groove portion 27a of the brush fixing body 27 is formed. The brush 26 and the metal housing 7 can be electrically connected by utilizing the spring pressure of the brush bent portion 26a that is more protruding.

第１１図は刷子折り曲げ部２８ａに切りおこしの突起２
９を設けることによってバネ圧を強化する方法を示して
いるが、第２の実施例と第４の実施例に適用することが
できる。Figure 11 shows a protrusion 2 cut into the brush bending part 28a.
Although the method of strengthening the spring pressure by providing the spring 9 is shown, it can be applied to the second embodiment and the fourth embodiment.

以上の説明から明らかなように本発明によれば、１１ペ
ージ 刷子組立■はメタルハウジング７に、ス’Ｊ　＞プリン
グ１８はロータ組立Ｉを構成するターンテーブル取付台
２に予め組立てられ、両者を組合すことにより刷子組立
■をユニット化するので、下記の効果を奏する。As is clear from the above description, according to the present invention, the 11-page brush assembly (■) is pre-assembled to the metal housing 7, and the spring 18 is pre-assembled to the turntable mounting base (2) constituting the rotor assembly (I). By combining them, the brush assembly (2) is made into a unit, so the following effects are achieved.

（イ）ブラシレスモータを構成する部品組立（ロータ組
立、ステータ組立等）が分割できるので、構成が非常に
単純になる。(a) Since the component assemblies (rotor assembly, stator assembly, etc.) that make up the brushless motor can be separated, the configuration becomes extremely simple.

（ロ）上記のように構成が単純化されるので生産能率が
飛躍的に向上する。(b) Since the configuration is simplified as described above, production efficiency is dramatically improved.

（ハ）各構成部品たとえばスリップリングの平板化ある
いは、刷子組立のユニット化によって部品コストが低減
する。(c) Part costs are reduced by flattening each component, such as a slip ring, or unitizing the brush assembly.

に）刷子組立に無理な力を加える必要がなくなるので信
頼性が向上する。2) Reliability is improved because there is no need to apply excessive force to the brush assembly.

（ホ）刷子組立とスリップリングの摺動粉の他への悪影
響を無視できるので伺岬性が向上する。(E) The brush assembly and the sliding powder of the slip ring can be ignored, so that the slippage performance is improved.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のブラシレスモータの断面図、第２図は本
発明の実施例を示すブラシレスモータの特開昭５８−２
２４５５１　（４） 断面図、第３図は本発明の第１の実施例を示す刷子組立
の斜視図、第４図は同分解斜視図、第６図は本発明の第
２の実施例を示す刷子組立の分解斜視図、第６図は第５
図のＡ−Ａ線における断面図、第７図は本発明の第３の
実施例を示す刷子組立の分解斜視図、第８図は第７図の
Ａ−Ａ線における断面図、第９図は本発明の第４の実施
例に適用される刷子の斜視図、第１０図は刷子組立の断
面図、第１１図は本発明の第２および第４の実施例に適
用される刷子折り曲げ部の斜視図である。 １・・・・・・回転軸、２・・・・・・ターンテーブル
取付台、３・・・・・・ロータヨーク、４・・・・・・
駆動マグネット、６・・・・・・ステータヨーク、７・
・・・・・メタルハウジング、１２・・・・・・ステー
タ巻線、１３・・・・・・ターンテーブル、１８・・・
・・・スリップリング、１７・・・・・・刷子組立、１
９゜２２．２４．２６・・・・・・刷子、２０．２３．
２５．２７・・・・・・刷子固定体。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第　
ｌｌ１１ ず 第３図 ／、５” 第７図 ５．？“ 輩ミ；、、、− 第８図 第９図　　　　第１０図 第１１図Fig. 1 is a sectional view of a conventional brushless motor, and Fig. 2 is a brushless motor according to an embodiment of the present invention published in JP-A-58-2.
24551 (4) A sectional view, FIG. 3 is a perspective view of a brush assembly showing the first embodiment of the present invention, FIG. 4 is an exploded perspective view of the same, and FIG. 6 is a second embodiment of the present invention. An exploded perspective view of the brush assembly, FIG.
7 is an exploded perspective view of a brush assembly showing a third embodiment of the present invention; FIG. 8 is a sectional view taken along line AA in FIG. 7; FIG. 10 is a sectional view of the brush assembly, and FIG. 11 is a brush bending portion applied to the second and fourth embodiments of the present invention. FIG. 1... Rotating shaft, 2... Turntable mounting base, 3... Rotor yoke, 4...
Drive magnet, 6...Stator yoke, 7.
...Metal housing, 12...Stator winding, 13...Turntable, 18...
...Slip ring, 17...Brush assembly, 1
9゜22.24.26...Brush, 20.23.
25.27...Brush fixing body. Name of agent: Patent attorney Toshio Nakao and 1 other person
ll11 ZuFigure 3/, 5'' Figure 7 5.?'' Figure 8 Figure 9 Figure 10 Figure 11

Claims (1)

【特許請求の範囲】 （１）回転軸に直角方向に磁化された駆動マグネットと
前記駆動マグネットが固定される中空円筒状のロータヨ
ークとターンテーブル取付台又はターンテーブルとを有
するロータ組立と、前記駆動マグネットと径方向に所定
空隙を保って対向配置されたステータ巻線とステータヨ
ークとを有するステータ組立と、前記ステータ組立の固
定及び回転軸を回転自在に軸承するメタルが固定される
メタルハウジングを有するプラケット組立とを備え、前
記ターンテーブル取付台にスリップリングを、前記メタ
ルハウジングの前記ターンテーブル取付台側の先端近辺
に刷子組立を各々設け、前記ロータ組立およびステータ
組立をブラケット組立に組立てた際に前記スリップリン
グに前記刷子組立の刷ぶ 子が接触するよう構成してなるラシレスモータ。 （２）前記刷子組立は刷子と刷子固定体から構成さ２ベ
ージ れ、前記刷子はスリップリングと摺動接触する部分と反
対側の一端がＬ字型に回転軸方向に折れ曲がった折れ曲
がり部分を有し、前記折れ曲り部分が前記メタルハウジ
ングの外周部分と前記刷子固定体の内周面との間に挿入
され、前記刷子固定体内周面は、前記折れ曲り部分が挿
入される位置に回転軸方向に所定幅の溝を有し、前記溝
部分に回転軸と直角方向にネジ穴を設けた特許請求の範
囲第（１）項記載のブラシレスモータ。 （３）前記刷子組立は刷子と刷子固定体から構成され、
前記刷子はスリップリングと摺動接触する部分と反対側
の一端がＵ字型に回転軸方向に折れ曲がった折れ曲り部
分を有し、前記折れ曲り部分は前記刷子固定体をはさみ
、前記メタ、ルハウジングの外周部分に挿入され、前記
刷子固定体は前記折れ曲がり部分にはさまれる位置に内
周面及び外周面の各々に軸方向に所定幅の溝を有する特
許請求の範囲第（１）項記載のブラシレスモータ。 （４）前記刷子組立は刷子と刷子固定体から構成され、
前記刷子はスリップリングと摺動接触する部３ぺ・−ジ 分と反対側の一端がＵ字型に回転軸方向に折れ曲がった
折れ曲り部分を有し、前記折れ曲り部分は前記刷子固定
体をはさみ前記メタルハウジングの外周部分に挿入され
、前記刷子固定体は前記折れ曲り部分が通るスリット穴
を有し、前記刷子固定体内周面に前記折れ曲り部分には
さ捷れる部分に所定幅の溝を有する特許請求の範囲第（
１）項記載のブラシレスモータ。 （６）前記刷子組立は刷子と刷子固定体とから構成され
、前記刷子はスリップリングと摺動接触する部分と反対
側の一端が７字形又はＵ字型に回転軸方向に折れ曲がっ
た折れ曲り部分を有し、前記折れ曲り部分の一部は前記
刷子固定体にインサートされ、前記折れ曲り部分の先端
部分は前記刷子固定体内周面から突出し、前記刷子固定
体の内周面に所定幅の軸方向溝を有する特許請求の範囲
第１項に記載のブラシレスモータ。 （６）前記刷子組立は刷子と刷子固□定体とから構成さ
れ、前記刷子は一端に小穴を有し、前記刷子固定体に前
記小穴と嵌合する突起を有する特許請求性１１昭５８−
２２４５５１　（２） の範囲第２項、捷たは第３項または第４項または第６項
に記載のブラシレスモータ。 （７）前記刷子組立は刷子と刷子固定体とから構成され
、前記刷子の一端にバネ性を有する特許請求の範囲第３
項又は第４項又は第６項に記載のブラシレスモータ。[Scope of Claims] (1) A rotor assembly including a drive magnet magnetized in a direction perpendicular to a rotating shaft, a hollow cylindrical rotor yoke to which the drive magnet is fixed, a turntable mounting base or a turntable, and the drive magnet. A stator assembly includes a stator winding and a stator yoke, which are arranged to face each other with a predetermined gap in the radial direction of the magnet, and a metal housing to which a metal that rotatably supports the stator assembly and rotatably supports the stator assembly is fixed. a bracket assembly, a slip ring is provided on the turntable mounting base, a brush assembly is provided near the tip of the metal housing on the turntable mounting base side, and when the rotor assembly and stator assembly are assembled to the bracket assembly, A brushless motor configured such that a brush of the brush assembly contacts the slip ring. (2) The brush assembly is composed of a brush and a brush fixing body, and the brush has a bent part in which one end opposite to the part that makes sliding contact with the slip ring is bent in the direction of the rotation axis in an L-shape. The bent portion is inserted between the outer circumferential portion of the metal housing and the inner circumferential surface of the brush fixing body, and the inner circumferential surface of the brush fixing body is aligned in the rotation axis direction at a position where the bent portion is inserted. A brushless motor according to claim 1, wherein the brushless motor has a groove of a predetermined width, and a screw hole is provided in the groove portion in a direction perpendicular to the rotating shaft. (3) The brush assembly is composed of a brush and a brush fixing body,
The brush has a U-shaped bent portion at one end opposite to the portion that makes sliding contact with the slip ring in the direction of the rotation axis, and the bent portion sandwiches the brush fixing body, The brush fixing body is inserted into the outer circumferential portion of the housing, and the brush fixing body has grooves having a predetermined width in the axial direction on each of the inner circumferential surface and the outer circumferential surface at positions sandwiched between the bent portions. brushless motor. (4) The brush assembly is composed of a brush and a brush fixing body,
The brush has a U-shaped bent portion at one end opposite to the 3-page portion that makes sliding contact with the slip ring, and the bent portion is bent toward the rotation axis. The scissors are inserted into the outer circumferential portion of the metal housing, the brush fixing body has a slit hole through which the bent portion passes, and a groove of a predetermined width is formed on the circumferential surface of the brush fixing body at a portion that is sandwiched between the bent portions. Claim No. 1 having (
Brushless motor described in section 1). (6) The brush assembly is composed of a brush and a brush fixing body, and the brush has one end opposite to the part that makes sliding contact with the slip ring, which is a bent part bent in a 7-shape or a U-shape in the direction of the rotation axis. A part of the bent portion is inserted into the brush fixing body, a tip portion of the bent portion protrudes from the inner circumferential surface of the brush fixing body, and a shaft of a predetermined width is attached to the inner circumferential surface of the brush fixing body. The brushless motor according to claim 1, having a directional groove. (6) The brush assembly is composed of a brush and a brush fixing body, the brush has a small hole at one end, and the brush fixing body has a protrusion that fits into the small hole.
224551 (2) The brushless motor according to the range 2, 3, 4, or 6. (7) The brush assembly includes a brush and a brush fixing body, and one end of the brush has a spring property.
The brushless motor according to item 4 or 6.
JP10941882A 1982-06-24 1982-06-24 Brushless motor Granted JPS58224551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10941882A JPS58224551A (en) 1982-06-24 1982-06-24 Brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10941882A JPS58224551A (en) 1982-06-24 1982-06-24 Brushless motor

Publications (2)

Publication Number Publication Date
JPS58224551A true JPS58224551A (en) 1983-12-26
JPS6217947B2 JPS6217947B2 (en) 1987-04-20

Family

ID=14509739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10941882A Granted JPS58224551A (en) 1982-06-24 1982-06-24 Brushless motor

Country Status (1)

Country Link
JP (1) JPS58224551A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6260458A (en) * 1985-09-10 1987-03-17 Copal Electron Co Ltd Bearing mechanism of rotary body
JPH02250652A (en) * 1989-03-22 1990-10-08 Matsushita Electric Ind Co Ltd Motor device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3004495U (en) * 1994-05-23 1994-11-15 メーコー工業株式会社 Chair

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6260458A (en) * 1985-09-10 1987-03-17 Copal Electron Co Ltd Bearing mechanism of rotary body
JPH02250652A (en) * 1989-03-22 1990-10-08 Matsushita Electric Ind Co Ltd Motor device

Also Published As

Publication number Publication date
JPS6217947B2 (en) 1987-04-20

Similar Documents

Publication Publication Date Title
US4438361A (en) Stepper motor having rotor with limited axial movement
JP2002262540A (en) Brushless motor
JP3373262B2 (en) Spindle motor
JPH07107723A (en) Small-sized motor
JPS58224551A (en) Brushless motor
JP3265906B2 (en) Small brushless motor
JP2000166170A (en) Small-sized motor
JP3827135B2 (en) Manufacturing method of small motor
JP2004104915A (en) Outer rotor type brushless motor
GB2114685A (en) Supporting the rotor of a stepper motor
JP2651925B2 (en) Disk drive motor incorporated from one side of the disk drive
JP2660337B2 (en) Commutator motor
JPH09247906A (en) Brush holder
JP2510253Y2 (en) Current collector
JPH1189198A (en) Capstan motor
JP3086397B2 (en) Motor thrust bearing structure
JPH0681439B2 (en) Radial type rotor of synchronous motor
JPH06296343A (en) Compact motor
JPH0759295A (en) Motor mounting structure
JPH0284046A (en) Miniture flat brushless motor
JPH0727816Y2 (en) Small DC motor commutator
JP2566388Y2 (en) Magnetic disk drive
JPS608551Y2 (en) motor stator
JPH0614494A (en) Small-sized dc motor
JPS60241764A (en) Brushless motor