JPH11356023A - Brushless motor provided with turntable - Google Patents
Brushless motor provided with turntableInfo
- Publication number
- JPH11356023A JPH11356023A JP15748998A JP15748998A JPH11356023A JP H11356023 A JPH11356023 A JP H11356023A JP 15748998 A JP15748998 A JP 15748998A JP 15748998 A JP15748998 A JP 15748998A JP H11356023 A JPH11356023 A JP H11356023A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- rotor
- turntable
- brushless motor
- rotor case
- 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
Links
Landscapes
- Rotational Drive Of Disk (AREA)
- Brushless Motors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、CD−ROM、
DVD−ROMなどのメディア駆動用として好適なター
ンテーブル部を備えたブラシレスモータに関する。TECHNICAL FIELD The present invention relates to a CD-ROM,
The present invention relates to a brushless motor having a turntable unit suitable for driving a medium such as a DVD-ROM.
【0002】[0002]
【従来の技術】従来よりCDなどのメディア駆動用ブラ
シレスモータとしては、図3に示すように浅い円筒型ロ
ータケースKの一側に快削黄銅を切削してなるメディア
載置用ターンテーブルTを一体化するとともに他側にマ
グネットMを配したロータRと、このロータRを支持す
る軸Sと、この軸Sを軸ホルダJとステータベースBか
らなるハウジングHに支承させるとともに、このハウジ
ングHの一部に載置して前記ロータRを駆動させるステ
ータSTを備えたものがある。2. Description of the Related Art Conventionally, as a brushless motor for driving a medium such as a CD, a turntable T for mounting a medium formed by cutting free-cut brass on one side of a shallow cylindrical rotor case K as shown in FIG. A rotor R integrated with a magnet M on the other side, a shaft S supporting the rotor R, and the shaft S are supported by a housing H including a shaft holder J and a stator base B. Some include a stator ST mounted on a part to drive the rotor R.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うなメディア載置用ターンテーブルTは、快削黄銅を切
削してなるため、このコストや取り付け手間などが問題
となる。特に最近においては軸垂直度が厳しく要求され
ているので、軸に取り付けたときの精度が問題となって
いる。However, such a media mounting turntable T is formed by cutting free-cutting brass, so that the cost and the time and labor for mounting the media become problems. Particularly in recent years, since the degree of perpendicularity to the shaft is strictly required, accuracy when mounted on the shaft has become a problem.
【0004】この発明の目的は、快削黄銅などを切削し
てなる高価なターンテーブルを使用しなくても機能を果
たすことができるようにしてコスト的に有利なターンテ
ーブル部を備えたブラシレスモータを提供するものであ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a brushless motor having a turntable section which can perform its function without using an expensive turntable formed by cutting free-cutting brass and has a cost-effective turntable. Is provided.
【0005】[0005]
【課題を解決するための手段】 上記のような課題を
解決するには、請求項1に示すようにロータケースの一
側にターンテーブル部を一体化するとともに他側にマグ
ネットを配したロータと、このロータを支持する軸と、
この軸を支承するハウジングと、このハウジングの一部
に載置して前記ロータを駆動させるステータを備えたブ
ラシレスモータにおいて、前記ロータケースの外周にタ
ーンテーブルとして機能するメディア載置部を形成する
と共にその内側を凹部にし、このようにしたロータケー
スを前記軸に圧入後、この軸を基準にして前記メディア
載置部を切削加工することにより軸垂直度を出すように
すれば達成できる。また、請求項2に示すように前記ロ
ータケースのメディア載置部の切削加工面に防錆を兼ね
スリップ防止手段を形成するのがよい。Means for Solving the Problems To solve the above-mentioned problems, a rotor in which a turntable portion is integrated on one side of a rotor case and a magnet is arranged on the other side as described in claim 1 is provided. A shaft for supporting the rotor,
In a brushless motor including a housing supporting the shaft and a stator mounted on a part of the housing to drive the rotor, a media mounting portion functioning as a turntable is formed on the outer periphery of the rotor case. This can be attained by forming a concave portion on the inside thereof, press-fitting the rotor case thus formed into the shaft, and then cutting the medium mounting portion with reference to the shaft so that the perpendicularity of the shaft is obtained. Further, it is preferable that a slip prevention means which also serves as rust prevention is formed on the cut surface of the media mounting portion of the rotor case.
【0006】請求項1に示す発明では、軸垂直度が十分
確保でき、黄銅製のメディア載置用ターンテーブルを特
別に用意しなくてすむので、コストと取り付け手間を省
くことができる。請求項2に示す発明では、切削加工面
に防錆を兼ね、高速型でもスリップを防止できる。According to the first aspect of the present invention, the verticality of the shaft can be sufficiently ensured, and there is no need to specially prepare a turntable for mounting a medium made of brass. According to the second aspect of the present invention, slipping can be prevented even with a high-speed type, while also providing rust prevention on the cut surface.
【0007】[0007]
【発明の実施の形態】次にこの発明の実施の形態を図面
に基づき説明する。図1はこの発明のターンテーブル部
を備えたブラシレスモータの第1の実施の形態として径
方向空隙式コアード型の構成を示す要部断面図、図2は
同モータの主要部材の部分の拡大要部断面図である。Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a cross-sectional view of a main part of a brushless motor provided with a turntable according to a first embodiment of the present invention, which shows a configuration of a radial gap type cored type. FIG. 2 is an enlarged view of a main member of the motor. It is a fragmentary sectional view.
【0008】図1において、1はハウジングを構成する
薄手のステンレス板などからなるステータベースで、上
面にガラスクロスエポキシ板からなる回路基板2を配す
ると共に、中央に橋絡部1aを残して3個の支骨片1b
‥‥を立ち上げ、この支骨片1b‥‥の部分を高摺動性
樹脂で一体成形してなる軸ホルダ3を設けている。この
軸ホルダ3の外周には複数個の突極4a‥‥にそれぞれ
電機子コイル4b‥‥を巻き線してなる2枚のコア4d
が接着、溶着などの手段によって固着され、前記各電機
子コイル4b‥‥の端末4cを前記の回路基板2の所定
のパターンに半田結線することによってステータ4を構
成している。In FIG. 1, reference numeral 1 denotes a stator base made of a thin stainless steel plate or the like constituting a housing. A circuit board 2 made of a glass cloth epoxy plate is arranged on the upper surface, and a bridge portion 1a is left in the center. Pieces of the bone bone 1b
And a shaft holder 3 is formed by integrally molding the portion of the support bone piece 1b with a highly slidable resin. On the outer periphery of the shaft holder 3, two cores 4d formed by winding armature coils 4b # around a plurality of salient poles 4a #, respectively.
Are fixed by means such as adhesion or welding, and the terminal 4c of each of the armature coils 4b # is soldered to a predetermined pattern of the circuit board 2 to form the stator 4.
【0009】一方、ロータRは、前記の軸ホルダ3に直
接回転自在に装着した軸5と、この軸5を圧入すること
によって取り付けられたロータケース6と、このロータ
ケース6の内側において前記コア4dの突極4a‥‥に
径方向空隙を介して臨ませるように板状のものをカール
して圧入固着したリング状ラバーマグネット7からな
り、前記ロータケース6の外周にターンテーブルとして
機能するメディア載置部6aを形成すると共にその内側
を凹部6bにし、このようにしたロータケース6を前記
軸5に圧入後、この軸5を基準にして前記メディア載置
部6aを切削加工することにより軸垂直度を出したもの
である。なお、圧入強度を得るために前記軸5の圧入部
に平目のローレットを形成しておくのが望ましい。On the other hand, the rotor R includes a shaft 5 directly rotatably mounted on the shaft holder 3, a rotor case 6 mounted by press-fitting the shaft 5, and the core 5 inside the rotor case 6. A medium that functions as a turntable on the outer periphery of the rotor case 6 and is formed by ring-shaped rubber magnets 7 that are curled and press-fitted and fixed to a plate-shaped material so as to face the salient poles 4a # of the 4d through radial gaps. The mounting portion 6a is formed and the inside thereof is formed into a concave portion 6b. After the rotor case 6 is press-fitted into the shaft 5, the media mounting portion 6a is cut with reference to the shaft 5 to form a shaft. The verticality is given. Preferably, a flat knurl is formed in the press-fit portion of the shaft 5 in order to obtain the press-fit strength.
【0010】そして、高速回転型メディア用として図2
に示すように切削加工したメディア載置部6aに防錆を
兼ねたゴム系の塗料を塗布してスリップ防止膜6cを形
成させるのがよい。FIG. 2 shows a high-speed rotating type medium.
It is preferable to form a slip prevention film 6c by applying a rust-preventive rubber-based paint to the cut media mounting portion 6a as shown in FIG.
【0011】また、ゴム系の塗料を塗布する代わりに同
様な材質のシートを貼付してもよいものである。さら
に、上記実施の形態はコアを2枚ラミネートした薄手の
もので示したが、数十枚ラミネートした軸方向に長いも
のにも採用できるのはいうまでもない。A sheet of a similar material may be attached instead of applying a rubber-based paint. Further, in the above-described embodiment, although a thin type in which two cores are laminated is shown, it is needless to say that a tens of laminated cores long in the axial direction can be employed.
【0012】[0012]
【発明の効果】この発明は、上記のようにな請求項1に
示す発明では、軸垂直度が十分確保でき、メディア載置
用ターンテーブルを特別に用意しなくてすむので、コス
トと取り付け手間を省くことができる。請求項2に示す
発明では、切削加工面に防錆を兼ね、高速型でもスリッ
プを防止できる。According to the first aspect of the present invention, the verticality of the shaft can be sufficiently ensured, and there is no need to prepare a special turntable for mounting the media. Can be omitted. According to the second aspect of the present invention, slipping can be prevented even with a high-speed type, while also providing rust prevention on the cut surface.
【図1】この発明のターンテーブル部を備えたブラシレ
スモータの第1の実施の形態として径方向空隙式コアー
ド型の構成を示す要部断面図である。FIG. 1 is a sectional view of a main part showing a configuration of a radial gap type cored type as a first embodiment of a brushless motor having a turntable section of the present invention.
【図2】同モータの主要部材の部分の拡大要部断面図で
ある。FIG. 2 is an enlarged sectional view of an essential part of a main member of the motor.
【図3】従来のターンテーブル部を備えたブラシレスモ
ータの要部断面図である。 FIG. 3 is a sectional view of a main part of a brushless motor having a conventional turntable unit.
1 ステータベース 1a 橋絡部 1b 支骨片 1c 切り欠き 2 回路基板 3 軸ホルダ 3a 電機子コイル 3c コアカバー 4 ステータコア数個の突極4a 4a 突極 4b 電機子コイル 5 軸 6 ロータケース 6a メディア載置部 6b 凹部 6c スリップ防止膜 7 リング状ラバーマグネット DESCRIPTION OF SYMBOLS 1 Stator base 1a Bridge part 1b Support piece 1c Notch 2 Circuit board 3 Axis holder 3a Armature coil 3c Core cover 4 Several stator core salient poles 4a 4a Salient pole 4b Armature coil 5 Axis 6 Rotor case 6a Media mounting Place 6b Recess 6c Anti-slip membrane 7 Ring-shaped rubber magnet
Claims (2)
を一体化するとともに他側にマグネットを配したロータ
と、このロータを支持する軸と、この軸を支承するハウ
ジングと、このハウジングの一部に載置して前記ロータ
を駆動させるステータを備えたブラシレスモータにおい
て、前記ロータケースの外周にターンテーブルとして機
能するメディア載置部を形成すると共にその内側を凹部
にし、このようにしたロータケースを前記軸に圧入後、
この軸を基準にして前記メディア載置部を切削加工する
ことにより軸垂直度を出したことを特徴とするターンテ
ーブル部を備えたブラシレスモータ。1. A rotor having a turntable unit integrated on one side of a rotor case and a magnet disposed on the other side, a shaft supporting the rotor, a housing supporting the shaft, and a part of the housing. In a brushless motor having a stator mounted on the rotor to drive the rotor, a media mounting portion functioning as a turntable is formed on the outer periphery of the rotor case, and the inside of the media mounting portion is formed into a concave portion. After press-fitting on the shaft,
A brushless motor provided with a turntable section, wherein the media mounting section is cut with reference to the axis to obtain a degree of perpendicularity to the axis.
削加工面に防錆を兼ねスリップ防止手段を形成した請求
項1に記載のターンテーブル部を備えたブラシレスモー
タ。2. The brushless motor provided with a turntable according to claim 1, wherein a slip prevention means which also serves as rust prevention is formed on a cut surface of the media mounting portion of the rotor case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15748998A JP3481137B2 (en) | 1998-06-05 | 1998-06-05 | Brushless motor with turntable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15748998A JP3481137B2 (en) | 1998-06-05 | 1998-06-05 | Brushless motor with turntable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11356023A true JPH11356023A (en) | 1999-12-24 |
JP3481137B2 JP3481137B2 (en) | 2003-12-22 |
Family
ID=15650812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15748998A Expired - Fee Related JP3481137B2 (en) | 1998-06-05 | 1998-06-05 | Brushless motor with turntable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3481137B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012014823A (en) * | 2010-06-30 | 2012-01-19 | Samsung Electro-Mechanics Co Ltd | Turntable for motor and manufacturing method of the same |
-
1998
- 1998-06-05 JP JP15748998A patent/JP3481137B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012014823A (en) * | 2010-06-30 | 2012-01-19 | Samsung Electro-Mechanics Co Ltd | Turntable for motor and manufacturing method of the same |
US8528011B2 (en) | 2010-06-30 | 2013-09-03 | Samsung Electro-Mechanics Co., Ltd. | Turntable for motor with disk holding part having particles and method for producing the same |
Also Published As
Publication number | Publication date |
---|---|
JP3481137B2 (en) | 2003-12-22 |
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