JPS5971126A - Head drum of magnetic recorder - Google Patents
Head drum of magnetic recorderInfo
- Publication number
- JPS5971126A JPS5971126A JP57181714A JP18171482A JPS5971126A JP S5971126 A JPS5971126 A JP S5971126A JP 57181714 A JP57181714 A JP 57181714A JP 18171482 A JP18171482 A JP 18171482A JP S5971126 A JPS5971126 A JP S5971126A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- fixed
- rotating
- rotary
- fixed shaft
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
- G11B5/53—Disposition or mounting of heads on rotating support
Abstract
Description
【発明の詳細な説明】
２ヘ−シ゛
産業上の利用分野
本発明は、回転する磁気ヘッドの回転軌跡に沿って一定
角度傾斜テープを巻付けて走行せしめ、その磁気テープ
の長手方向に対して一定角度傾斜した記録軌跡として順
次信号を記録あるいは再生する回転ヘッド型の磁気記録
装置（以下、ＶＴＲと呼ぶ）のヘッドドラムに関するも
のである。Detailed Description of the Invention 2. Field of Industrial Application The present invention involves winding and running a tape inclined at a constant angle along the rotation locus of a rotating magnetic head. The present invention relates to a head drum of a rotary head type magnetic recording device (hereinafter referred to as a VTR) that sequentially records or reproduces signals as a recording trajectory inclined at a constant angle.
従来例の構成とその問題点
従来の回転上ドラム中心固定軸型ＶＴＲのヘッドドラム
（以下、ヘッドドラムと呼ぶ）を第１図に示す。１は回
転上ドラム、２は回転スリーブ、３は中心固定軸、４は
ピボット軸受、５は固定下ドラム、６はラジアル玉軸受
、７は中心固定軸ベースである。円錐部８は中心固定軸
３の先端に形成されておｐ、またピボット軸受４は、回
転スリーブ２に、ピボット軸受固定用フタ９にて内封さ
れた構成になっている。また、回転スリーブ２と、回転
上ドラム１は、取付はネジ１２で固定される。Structure of a conventional example and its problems A head drum (hereinafter referred to as a head drum) of a conventional rotating upper drum center fixed shaft type VTR is shown in FIG. 1 is a rotating upper drum, 2 is a rotating sleeve, 3 is a central fixed shaft, 4 is a pivot bearing, 5 is a fixed lower drum, 6 is a radial ball bearing, and 7 is a central fixed shaft base. The conical portion 8 is formed at the tip of the central fixed shaft 3, and the pivot bearing 4 is enclosed within the rotating sleeve 2 with a pivot bearing fixing lid 9. Further, the rotating sleeve 2 and the rotating upper drum 1 are attached and fixed with screws 12.
中心固定軸３は、中心固定軸ベース７に、取付はネジ１
３によシ固定される。前記ピボット軸受４に相当する軸
受部を、第１の軸受部、ラジアル玉軸受部６を、第２の
軸受部とする。The center fixed shaft 3 is attached to the center fixed shaft base 7 with screw 1.
3. The bearing portion corresponding to the pivot bearing 4 is referred to as a first bearing portion, and the radial ball bearing portion 6 is referred to as a second bearing portion.
次に組立工程の概略を説明すると、下記の通シである。Next, the outline of the assembly process will be explained as follows.
まず回転スリーブ２と、これにピボット軸受固定用フタ
９にて内封されたピボット軸受４等よりなるユニットを
、ラジアル玉軸受６と固定下ドラム５等よりなるユニッ
トに入れ、ラジアル玉軸受６と回転スリーブ２をスラス
ト１７輪１゜にて締結する。次に、磁気ヘッド１１と回
転上ドラム１等よりなるユニットを、前記ユニットの回
転スリーブ２に嵌合させ、取付はネジ１２にて固定する
。最後に、中心固定軸３と、中止固定軸ベース７を組合
わせたユニットを下部から取り付け、ラジアル玉軸受６
に予圧をかけつつ、中心固定軸ベース７と固定下ドラム
５を取付はネジ１４にて固定する。なお、前記回転スリ
ーブ２を回転駆動する手段を第１の軸受部（ピボット軸
受４）と、ｆｆ１２の軸受部（ラジアル千１１＋受６）
の間に設けである。First, a unit consisting of the rotating sleeve 2 and the pivot bearing 4 enclosed by the pivot bearing fixing lid 9 is placed into a unit consisting of the radial ball bearing 6 and the fixed lower drum 5, etc., and the radial ball bearing 6 and The rotating sleeve 2 is fastened with 17 thrust wheels at 1°. Next, a unit consisting of the magnetic head 11, the upper rotating drum 1, etc. is fitted into the rotating sleeve 2 of the unit, and the unit is fixed with screws 12. Finally, install the unit that combines the center fixed shaft 3 and the stop fixed shaft base 7 from the bottom, and install the radial ball bearing 6.
The center fixed shaft base 7 and the fixed lower drum 5 are fixed with screws 14 while applying preload to the center fixed shaft base 7 and the fixed lower drum 5. The means for rotationally driving the rotary sleeve 2 is a first bearing part (pivot bearing 4) and a bearing part of ff12 (radial 111+bearing 6).
It is set in between.
以上説明したように、従来の回転上ドラム中心固定軸型
ＶＴＲのヘッドドラムにおいては、回転スリーブを回転
駆動する手段がドラムに内蔵されるため、コンパクト化
が図れる。また、ユニット組立となるため、中心回転軸
方式に比べ組立性等において優位であった。しかし、従
来のヘッドドラムにおいては、固定下ドラムを基準とし
て上下に各ユニットを挿入取付を行なうため、多くの組
立治具を必要とする。従って、組立性、量産性に問題が
あった。更に、回転上ドラムにおいては、回転スリーブ
に嵌合させ、磁気テープ走行面から取付はネジにて回転
スリーブに固定する方式をとっているために、補修時等
、回転上ドラムを交換する時において位置決めが難しい
。また、回転上ドラムの磁気テープ走行面に取付はネジ
用の穴があけである為、磁気テープを走行させた時、磁
気テープにダメージを与える時がある。As explained above, in the head drum of the conventional rotary upper drum center fixed shaft type VTR, the means for rotationally driving the rotary sleeve is built into the drum, so that the head drum can be made more compact. In addition, since it was a unit assembly, it was superior in terms of ease of assembly compared to the central rotating shaft method. However, in the conventional head drum, many assembly jigs are required because each unit is inserted and mounted above and below the fixed lower drum as a reference. Therefore, there were problems with ease of assembly and mass production. Furthermore, since the upper rotating drum is fitted into the rotating sleeve and attached from the magnetic tape running surface to the rotating sleeve using screws, it is difficult to replace the upper rotating drum during repairs. Difficult to position. Furthermore, since the magnetic tape running surface of the rotating upper drum is mounted with holes for screws, the magnetic tape may be damaged when it is run.
発明の目的
本発明は前記従来例の問題点を解消し、ヘッドドラムの
組立性、量産性の向上、および、ヘッドドラムの小形軽
量化を図るものである。OBJECTS OF THE INVENTION The present invention solves the problems of the conventional example, improves the assemblability and mass productivity of the head drum, and makes the head drum smaller and lighter.
６、−７
発明の構成
本発明は、固定下ドラムと、それに同軸上に配された中
心固定軸と、この中心固定軸と同軸周りに回転する回転
スリーブと、固定下ドラムの径と略同−で、固定下ドラ
ムと微少すきまを有して、回転スリーブに着脱自在に取
付けられた固定上ドラムと、回転スリーブを回転駆動さ
せるよう固定下ドラムに設けられたステータユニットお
よび回転スリーブに設けられたロータユニットから構成
されており、ヘッドドラムの組立性、量産性の向上、お
よび、小形軽量化が図れる効果を有する。6,-7 Structure of the Invention The present invention provides a fixed lower drum, a central fixed shaft disposed coaxially with the fixed lower drum, a rotary sleeve that rotates about the same axis as the central fixed shaft, and a rotary sleeve that rotates around the same axis as the fixed lower drum. - a fixed upper drum that is removably attached to the rotating sleeve with a slight clearance from the lower fixed drum; a stator unit that is provided on the lower fixed drum and the rotating sleeve to drive the rotating sleeve; The head drum is composed of a rotor unit that has a rotor unit, which has the effect of improving the ease of assembling the head drum, improving mass productivity, and reducing the size and weight of the head drum.
実施例の説明
以下に、本発明の一実施例の組立工程の概略を第２図に
もとづいて説明する。DESCRIPTION OF THE EMBODIMENTS Below, an outline of the assembly process of an embodiment of the present invention will be explained based on FIG.
図において、１９は固定下ドラム、１７は回転スリーブ
、１６は回転上ドラムで、前記固定下ドラム１９に中心
固定軸１Ｂを焼嵌め、圧入等の永久結合にて固定した後
、該固定下ドラム１９にステータユニッ）２０を取付は
ネジ（図示せず〕にて固定する。次に、回転スリーブ１
７にロータユ６、、：、。In the figure, 19 is a fixed lower drum, 17 is a rotating sleeve, and 16 is a rotating upper drum. After the central fixed shaft 1B is shrink-fitted to the fixed lower drum 19 and fixed by a permanent connection such as press-fitting, the fixed lower drum is Attach the stator unit 20 to the rotary sleeve 19 using screws (not shown).
Rotayu 6 on 7, :,.
ニット２１を取付はネジ２６にて固定した後、第１軸受
２２、第２軸受２３を挿入する。尚第１軸受、第２軸受
はボールベアリングやメタル等で構成されることも含ま
れる。該回転スリーブ１了を上記固定下ドラム１９の中
心固定軸１８に回転可能に嵌合し、予圧金具２４を中心
固定軸１８に取付はネジ２７にて取付け、第１軸受２２
、第２軸受２３の位置固定を行ない、回転スリーブ１７
に磁気ヘッド２６を取付けた回転上ドラム１６を回転ス
リーブ１７に嵌合させ、取付ネジ２８にて固定する。な
お、回転上ドラム１６と回転スリーブ１７との係合は、
スプライン等で位置決め後、ビスによる固定方法も含才
れる。After installing the knit 21 and fixing it with screws 26, the first bearing 22 and the second bearing 23 are inserted. Note that the first bearing and the second bearing may be formed of a ball bearing, metal, or the like. The rotating sleeve 1 is rotatably fitted to the central fixed shaft 18 of the fixed lower drum 19, and the preload fitting 24 is attached to the central fixed shaft 18 with the screw 27, and the first bearing 22 is attached.
, fixes the position of the second bearing 23, and rotates the rotating sleeve 17.
The upper rotating drum 16 with the magnetic head 26 attached thereto is fitted into the rotating sleeve 17 and fixed with a mounting screw 28. Note that the engagement between the upper rotating drum 16 and the rotating sleeve 17 is as follows.
This also includes a method of fixing with screws after positioning with splines or the like.
発明の効果
以上のように、本実施例によるヘッドドラムは、１ 回
転上ドラムの固定方法は、回転スリーブに嵌合させた後
、回転上ドラム上端面から取付はネジにて固定する方式
を用いているため、回転上ドラムの磁気テープ走行面に
取付はネジ用の穴がなく、磁気テープに与える影響は少
なく、７ ・
また、前記取付法により、回転上ドラムは回転スリーブ
に着脱自在に取付けられ、位置決め等が簡略化されるこ
と、
２ 回転スリーブを回転すべき駆動源が、回転スリーブ
に垂下されたロータユニットと、固定下ドラムに設けら
れたステータユニットにより構成されており、従来のヘ
ッドドラムに比し小型軽量化が図れること、
３ 固定下ドラムを基準に部品を積み上げていく方式で
、組立時における精度は、各部品仕上精度による影響を
受けるのみで、組立工程の簡略化ができ組立性及び量産
性の向上を図ることが出来ること、
等の効果を有している。、Effects of the Invention As described above, the head drum according to the present embodiment has the following features: 1. The method of fixing the rotating upper drum is to use a method of fitting the rotating upper drum into the rotating sleeve and then fixing it from the upper end surface of the rotating upper drum with screws. Because of this, there are no holes for screws to install the magnetic tape on the magnetic tape running surface of the upper rotating drum, so there is little effect on the magnetic tape. 2. The drive source for rotating the rotating sleeve is composed of a rotor unit suspended from the rotating sleeve and a stator unit provided on the fixed lower drum, and the drive source for rotating the rotating sleeve is composed of a rotor unit suspended from the rotating sleeve and a stator unit provided on the fixed lower drum. It is smaller and lighter than a drum, and 3. It is a method in which parts are piled up based on a fixed lower drum, and the accuracy during assembly is only affected by the finishing accuracy of each part, simplifying the assembly process. It has the following effects: it is possible to improve assembly efficiency and mass productivity. ,
第１図は従来例の断面図二相２図は本発明の一実施例を
示す断面図である。
１．１６・・・・・・回転上ドラム、２，１７・・・・
・回転スリーブ、３．１８・・・・・・中心固定軸、４
・・・・・・ピボット軸受、６，１９・・・・・・固定
下ドラム、６・・・・・・ラジアル玉軸受、７・・・・
・・中心固定軸ベース、８・・・・・・円錐部、９・・
・・・・ピボット軸受固定用フタ、１０・・・・・・ス
ラスト止メ輪、１１．２５・・・・・・磁気ヘッド、１
２．１３，１４，１５，２６，２７．２８・・・・・・
取付はネジ、２０・・・・・・ステータユニット、２１
・・・・・・ロータユニット、２２・・・・・・第１軸
受、２３・・・・・・第２軸受、２４・・・・・・予圧
金具。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
７
第２図
２FIG. 1 is a cross-sectional view of a conventional example; FIG. 2 is a cross-sectional view showing an embodiment of the present invention. 1.16...Rotating upper drum, 2,17...
・Rotating sleeve, 3.18... Center fixed shaft, 4
...Pivot bearing, 6,19...Fixed lower drum, 6...Radial ball bearing, 7...
...Central fixed shaft base, 8...Cone part, 9...
...Pivot bearing fixing lid, 10...Thrust retaining ring, 11.25...Magnetic head, 1
2.13, 14, 15, 26, 27.28...
Mount with screws, 20...Stator unit, 21
...Rotor unit, 22...First bearing, 23...Second bearing, 24...Preload fitting. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 7 Figure 2 2
Claims (1)
された中心固定軸と、この中心固定軸に回転可能に嵌合
された回転スリーブと、この回転スリーブに前記中心固
定軸の軸方向に取付はピンによシ着脱自在に取付けられ
、かつ前記固定下ドラムの径と略同−で、固定下ドラム
と微少すきまを有して回転可能な回転上ドラムと、前記
中心固定軸と前記回転スリーブの間に介装され、前記回
転スリーブを支持する第１軸受部および第２軸受部と、
前記中心固定軸上端に設けられ、前記第１軸受部と第２
軸受部を位置固定する予圧金具と、前記回転上ドラムを
回転駆動させるよう、前記固定下ドラムに設けられたス
テータユニットおよび回転スリーブに設けられたロータ
ユニットとからなる磁気記録装置のヘッドドラム。a cylindrical fixed lower drum; a central fixed shaft fixedly supported by the fixed lower drum; a rotating sleeve rotatably fitted to the central fixed shaft; The rotating upper drum is removably attached to a pin and has approximately the same diameter as the fixed lower drum and is rotatable with a slight clearance from the fixed lower drum, the central fixed shaft and the rotating upper drum. a first bearing part and a second bearing part that are interposed between the sleeves and support the rotating sleeve;
is provided at the upper end of the central fixed shaft, and is connected to the first bearing portion and the second bearing portion.
A head drum of a magnetic recording device comprising a preload fitting for positionally fixing a bearing part, and a stator unit provided on the fixed lower drum and a rotor unit provided on a rotating sleeve so as to rotationally drive the rotating upper drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57181714A JPS5971126A (en) | 1982-10-15 | 1982-10-15 | Head drum of magnetic recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57181714A JPS5971126A (en) | 1982-10-15 | 1982-10-15 | Head drum of magnetic recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5971126A true JPS5971126A (en) | 1984-04-21 |
Family
ID=16105571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57181714A Pending JPS5971126A (en) | 1982-10-15 | 1982-10-15 | Head drum of magnetic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5971126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151014A (en) * | 1987-12-08 | 1989-06-13 | Matsushita Electric Ind Co Ltd | Rotary head cylinder |
-
1982
- 1982-10-15 JP JP57181714A patent/JPS5971126A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151014A (en) * | 1987-12-08 | 1989-06-13 | Matsushita Electric Ind Co Ltd | Rotary head cylinder |
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