JP2802788B2 - carriage - Google Patents
carriageInfo
- Publication number
- JP2802788B2 JP2802788B2 JP1266727A JP26672789A JP2802788B2 JP 2802788 B2 JP2802788 B2 JP 2802788B2 JP 1266727 A JP1266727 A JP 1266727A JP 26672789 A JP26672789 A JP 26672789A JP 2802788 B2 JP2802788 B2 JP 2802788B2
- Authority
- JP
- Japan
- Prior art keywords
- carriage
- carriage body
- coil
- bearing
- bobbin
- 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
- Moving Of Heads (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ディスク型の情報記録媒体に対し記録・再
生を行う装置において、情報記録媒体をラジアル方向に
移動するキャリッジに関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage for moving an information recording medium in a radial direction in an apparatus for recording / reproducing information on / from a disk-type information recording medium.
［従来の技術］ 第２図は従来例のキャリッジの断面図を示し、キャリ
ッジ本体１にはフッ素樹脂、銅系焼結合金等で造られた
軸受２、２がキャリッジ本体１に圧入又は接着により取
り付けられ、軸受２、２を通るレール３、３によりキャ
リッジ本体１は支持され、レール３、３に沿って前後に
移動自在となっている。キャリッジ本体１上には記録・
再生用の対物レンズ４を備えたアクチュエータ５が搭載
され、キャリッジ本体１の左右両側にリニアモータのコ
イルを巻いたコイルボビン６、６がねじ止めや、接着等
の手段で固定されている。[Prior Art] FIG. 2 is a cross-sectional view of a carriage of a conventional example. Bearings 2 and 2 made of a fluororesin, a copper-based sintered alloy, or the like are mounted on a carriage body 1 by press-fitting or bonding. The carriage body 1 is mounted and supported by rails 3 and 3 passing through bearings 2 and 2, and can be moved back and forth along the rails 3 and 3. Recording / recording on the carriage body 1
An actuator 5 having an objective lens 4 for reproduction is mounted, and coil bobbins 6 and 6 around which a linear motor coil is wound are fixed on the left and right sides of the carriage body 1 by means such as screwing or bonding.
ボビン６、６の上下にはそれぞれ上ヨーク７、７、下
ヨーク８、８が配置され、ボビン６、６の中空部内には
センタヨーク９、９が挿入され、上ヨーク７、７の下面
と下ヨーク８、８の上面に、厚さ方向に着磁された永久
磁石10、10が固定され磁気回路を構成している。Upper and lower yokes 7, 7, and lower yokes 8, 8 are disposed above and below the bobbins 6, 6, respectively. Center yokes 9, 9 are inserted into the hollow portions of the bobbins 6, 6, and the lower surfaces of the upper yokes 7, 7 are connected to each other. Permanent magnets 10, 10 magnetized in the thickness direction are fixed on the upper surfaces of the lower yokes 8, 8 to form a magnetic circuit.
［発明が解決しようとする課題］ 上述の従来例では、キャリッジ本体１にボビン６、６
をねじ止めや接着により固定するので、固定方法が不適
切なために結合の剛性が低下したり、コイル自体の強度
不足のため、共振が生じ、リニアモータの周波数特性が
悪化したり、位置決めが不適切なために磁気回路にボビ
ン６が接触するなどの問題が生じ易く、また軸受２、２
をキャリッジ本体１に別部材として取り付けると製造工
程の増大やコストアップにつながっている。[Problems to be Solved by the Invention] In the above-mentioned conventional example, the bobbins 6, 6
Is fixed by screwing or gluing, so the rigidity of the connection is reduced due to improper fixing method, resonance occurs due to insufficient strength of the coil itself, the frequency characteristics of the linear motor deteriorate, Problems such as bobbin 6 coming into contact with the magnetic circuit due to improperness are likely to occur.
Is attached to the carriage body 1 as a separate member, which leads to an increase in the number of manufacturing steps and an increase in cost.
本発明の目的は、上述の欠点を解消し、キャリッジ本
体にボビンと軸受とを一体に成形することにより、剛性
・製造能率が向上し安価なキャリッジを提供することに
ある。An object of the present invention is to provide an inexpensive carriage that solves the above-mentioned drawbacks and that has a bobbin and a bearing formed integrally with a carriage body, thereby improving rigidity and manufacturing efficiency.
［課題を解決するための手段］ 上記の目的を達成するための本発明に係るキャリッジ
においては、リニアモータによって移動可能なキャリッ
ジ本体に、リニアモータ用のボビン、コイル及びガイド
軸を挿通する軸受とを一体的にモールド成形すると共
に、前記軸受の内側に前記キャリッジ本体の材質とは異
なり滑り摩擦係数の低い材質をモールド成形したことを
特徴とする。[Means for Solving the Problems] In a carriage according to the present invention for achieving the above object, a carriage for inserting a bobbin, a coil and a guide shaft for a linear motor into a carriage body movable by a linear motor is provided. And a material having a low coefficient of sliding friction, different from the material of the carriage body, is molded inside the bearing.
［作用］ 上記の構成を有するキャリッジは、キャリッジ本体に
ボビンを一体化しているため両者の結合の剛性が高く、
コイルの巻き精度やコイルの位置精度を高くしなくとも
済み、またコイルも樹脂内にインサート成形し、コイル
自体を樹脂により完全固定するので、コイル自体の共振
を制振する効果があり、更には軸受の内側部にキャリッ
ジ本体と一体化し、キャリッジ本体の材質よりも滑り摩
擦係数の低い材質を一体的にモールド成形しているの
で、滑り特性が良好となる。[Operation] In the carriage having the above-described configuration, the bobbin is integrated with the carriage body, so that the rigidity of the connection between the both is high,
It is not necessary to increase the coil winding accuracy and coil position accuracy.In addition, the coil is insert-molded in resin and the coil itself is completely fixed with resin, which has the effect of damping the resonance of the coil itself. Since the carriage body is integrated with the inside of the bearing and a material having a lower sliding friction coefficient than the material of the carriage body is integrally molded, the sliding characteristics are improved.
［実施例］ 本発明を第１図に図示の実施例に基づいて詳細に説明
する。Embodiment The present invention will be described in detail based on the embodiment shown in FIG.
第１図は実施例を示し、第２図の従来例におけるキャ
リッジ本体１、軸受２、２、及びボビン６、６に相当す
る部分及びこのボビン６、６に巻回したコイル11が一体
としてモールド成形によりキャリッジ本体13として構成
され、その他の部分は第２図と同様である。FIG. 1 shows an embodiment, in which the carriage body 1, bearings 2, 2 and portions corresponding to the bobbins 6, 6 and the coil 11 wound around the bobbins 6, 6 in the conventional example of FIG. It is formed as a carriage body 13 by molding, and the other parts are the same as those in FIG.
キャリッジ本体13の材質にはPPSなどが用いられ、軸
受２、２の内側には摺動材等を添加して滑り摩擦係数を
低減する材料14が二色成形されている。The carriage body 13 is made of PPS or the like. Inside the bearings 2 and 2, a material 14 for adding a sliding material or the like to reduce a sliding friction coefficient is formed in two colors.
これにより、キャリッジ本体13の強度は向上し、コス
トダウンにもなる。また、軸受の内側にキャリッジ本体
よりも滑り摩擦係数の低い材質をモールド成形すること
により、滑り特性が良好となる。Thereby, the strength of the carriage body 13 is improved, and the cost is reduced. By molding a material having a lower coefficient of sliding friction than the carriage main body inside the bearing, the sliding characteristics are improved.
［発明の効果］ 以上説明したように本発明に係るキャリッジは、キャ
リッジ本体にボビン、コイル、軸受を一体に成形するこ
とにより高剛性が得られ、ボビンの固定不良によるキャ
リッジの制御特性の悪化をなくすことができる。[Effects of the Invention] As described above, in the carriage according to the present invention, high rigidity can be obtained by integrally molding the bobbin, the coil, and the bearing with the carriage main body, and deterioration of the control characteristics of the carriage due to poor fixing of the bobbin is prevented. Can be eliminated.
図面第１図は本発明に係るキャリッジの実施例の断面図
であり、第２図は従来例の断面図である。 符号２は軸受、６はボビン、11はコイル、13はキャリッ
ジ本体、14は材料である。FIG. 1 is a sectional view of an embodiment of a carriage according to the present invention, and FIG. 2 is a sectional view of a conventional example. Reference numeral 2 denotes a bearing, 6 denotes a bobbin, 11 denotes a coil, 13 denotes a carriage body, and 14 denotes a material.
Claims (1)
ジ本体に、リニアモータ用のボビン、コイル及びガイド
軸を挿通する軸受とを一体的にモールド成形すると共
に、前記軸受の内側に前記キャリッジ本体の材質とは異
なる滑り摩擦係数の低い材質をモールド成形したことを
特徴とするキャリッジ。1. A carriage body movable by a linear motor is integrally molded with a bearing for inserting a bobbin, a coil, and a guide shaft for the linear motor, and a material of the carriage body is formed inside the bearing. Is a carriage formed by molding a different material having a low coefficient of sliding friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1266727A JP2802788B2 (en) | 1989-10-13 | 1989-10-13 | carriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1266727A JP2802788B2 (en) | 1989-10-13 | 1989-10-13 | carriage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03127386A JPH03127386A (en) | 1991-05-30 |
| JP2802788B2 true JP2802788B2 (en) | 1998-09-24 |
Family
ID=17434847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1266727A Expired - Fee Related JP2802788B2 (en) | 1989-10-13 | 1989-10-13 | carriage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2802788B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117169A (en) * | 1985-11-18 | 1987-05-28 | Canon Inc | Head scanning device |
-
1989
- 1989-10-13 JP JP1266727A patent/JP2802788B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03127386A (en) | 1991-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |