JPS62159369A - Rotary head assembly for magnetic recording and reproducing device - Google Patents
Rotary head assembly for magnetic recording and reproducing deviceInfo
- Publication number
- JPS62159369A JPS62159369A JP97686A JP97686A JPS62159369A JP S62159369 A JPS62159369 A JP S62159369A JP 97686 A JP97686 A JP 97686A JP 97686 A JP97686 A JP 97686A JP S62159369 A JPS62159369 A JP S62159369A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- cylinder
- recording medium
- fixed cylinder
- rotary
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ビデオ・テープ・レコーダの如き、磁気記
録再生装置の回転ヘンドアセンダ１ハ特にテープ状２緑
再生ヘツドとの間の信号伝達の安定性の改善に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is directed to stabilizing signal transmission between a rotating head ascender 1 and a tape-shaped 2 green reproducing head of a magnetic recording/reproducing device such as a video tape recorder. Concerning sexual improvement.
従来ノビデオ・テープ・レコーダの回転ヘッドアセンブ
リが第８図乃至８１１図に示さｎている。＠８■は部分
縦断面図、＠９図は第８図のものの記録再生ヘッド近傍
の正面図、＠１０図は第９図の線Ｘ−Ｘに沿った断面図
、＠１１図は回転ヘッドアセンブリに対Ｔ芯テープ状記
録媒体の巻付きを示す平面図である。A rotary head assembly for a conventional video tape recorder is shown in FIGS. 8-811. @8■ is a partial longitudinal cross-sectional view, @9 is a front view of the recording/reproducing head in the vicinity of the one in Figure 8, @10 is a cross-sectional view taken along line XX in Figure 9, and @11 is a rotating head. FIG. 3 is a plan view showing the winding of a T-core tape-shaped recording medium around the assembly.
記録再生ヘッドｉｌｌはヘッドチップ（１０１）とこｎ
を支持するヘッドペース（１０２）とからなり、回転シ
リンダ（２）によって支持されている。回転シリンダ（
２１は回ｔｉｉ、！ｌ！ｌｌ１（４に固定された７ラン
ジ（３１に取付けられ％口転輪（４１は固定シリンダ（
５）に取付けられた球軸受＋６１ 、 ＋７１に挿入さ
れ。The recording/reproducing head ill is connected to the head chip (101).
It consists of a head space (102) that supports a rotary cylinder (2), and is supported by a rotating cylinder (2). Rotating cylinder (
21 is tii,! l! ll1 (7 langes fixed to 4) (attached to 31 and % rotation wheel (41 is fixed cylinder (
5) are inserted into the ball bearings +61 and +71 installed in the.
エンドリング（８）で支持される。（９）はテープ状記
録媒体たる磁気テープ、（１０）は７ランジ（３）のＦ
面に取付けらｎた回転側ロータリトランス。It is supported by an end ring (8). (9) is a magnetic tape which is a tape-shaped recording medium, (10) is the F of 7 lunge (3)
Rotary side rotary transformer mounted on the surface.
（１１）は回転側ロータリトランス（１０）に対向して
固定シリンダ（５）に取付けられた固定側ロークリトラ
ンスで、このロータリトランスは記録再生ヘッド（１）
への記録信号や記録再生ヘッド（１）が磁気テープ（９
］からピンクアンプした再生信号を電気回路（図示せず
）との間で授受するものである。(11) is a fixed side rotary transformer attached to a fixed cylinder (5) opposite to the rotating side rotary transformer (10), and this rotary transformer is connected to the recording/reproducing head (1).
The recording signal to the magnetic tape (9) and the recording/reproducing head (1)
] to and from an electric circuit (not shown).
次に％１１図を８照する１こ、ここには回転ヘッドアセ
ンブリに対する磁気テープの巻付き状態が示されて８つ
、磁気テープ（９）は固定シリンダ（５）の外周面（５
０１）に形成さｎたリード溝（５０’２ ） （第８図
）に沿って前記外周面（５０１）ｂを案内されて矢印（
１２〕の方向に走行する。Next, refer to figure %11. This shows the winding state of the magnetic tape around the rotating head assembly.
The outer circumferential surface (501)b is guided along the lead groove (50'2) (Fig. 8) formed in the
12] direction.
（Ａ３は磁気テープ（９）が固定シリンダ（５）に巻付
き始じめる入口部、（Ｂｌは中央部、（０は磁気テープ
（９）が固定シリンダ１５１から離れる出口部であり、
（］は入口部（んから中天部ＩＢＩまでの前半部、（Ｐ
３は中央ｔＡＩＢＪから出口部（Ｏまでの後半部である
。(A3 is the entrance part where the magnetic tape (9) begins to wrap around the fixed cylinder (5), (Bl is the center part, (0 is the exit part where the magnetic tape (9) leaves the fixed cylinder 151,
() is the first half from the entrance part (N to the middle part IBI), (P
3 is the latter half from the central tAIBJ to the exit section (O).
ところで回転ヘッドアセンブリの周囲に磁気テープが巻
付いた時の回転シリンダ（２］の回転軸線（４０１）方
向に見た変形に着目すると、回転シリンダ（２）上にお
いてはその回転による空気膜の形成により浮上しており
、固定シリンダ（５）上においては、これが空気膜を形
成する機能をもたないのでほとんど浮上しておらず、固
定シリンダ（５）の外周面（５０１）に接触して走行し
ている。また、回転シリンダ（ｚ上における浮上量は、
回転シリンダ（２にかかる磁気テープ＋９１の円周方向
の位置に関係があり、磁気テープ（９）の入口ｇｌＡｌ
での変形はＩ！１０図の（９Ａ）のように、中央部ｉＢ
ｌでは（９Ｂ）のように、そして出口部（０では（９Ｃ
〕のようになる。即ち、入口部（Ａ１と中央部（Ｂとの
間の磁気テープ＋９１の回転シリンダ（２）上での浮上
量は中央部ｆＢｌと出口部ｉｃｌとの間の浮上量より大
きい。By the way, if we focus on the deformation of the rotating cylinder (2) when viewed in the direction of the rotational axis (401) when the magnetic tape is wrapped around the rotating head assembly, an air film is formed on the rotating cylinder (2) due to its rotation. Since it does not have the function of forming an air film on the fixed cylinder (5), it hardly floats on the fixed cylinder (5), and travels in contact with the outer peripheral surface (501) of the fixed cylinder (5). In addition, the flying height on the rotating cylinder (z is
It is related to the circumferential position of the magnetic tape +91 applied to the rotating cylinder (2), and the inlet glAl of the magnetic tape (9)
The transformation in I! As shown in Figure 10 (9A), the central part iB
l as (9B), and exit part (0 as (9C)
〕become that way. That is, the flying height of the magnetic tape +91 on the rotating cylinder (2) between the entrance part (A1) and the central part (B) is larger than the flying height between the central part fBl and the exit part icl.
従来の回転ヘッドアセンブリにおいては１以上のように
回転シリンダ１番こおける磁気テープの浮上量が異なり
、入口部と中央部との間に８いては浮上量が大きいため
磁気テープ＋９１はヘッドチップ（ＩＯＩＪの先端から
若干離れ気味の傾向を示Ｔ一方、中央部ｆＢｌと出口部
１ｃＩとの間では浮上量が小さいため、ヘッドチップ（
１０１）に巻付くような挙動を示し、入口部から出口部
へかけて磁気テープ（９）とヘッドチップ（１０１）と
の間で不安定な接触状態を生じ、従って信号の伝達も不
安定になる問題点があった。In conventional rotary head assemblies, the flying height of the magnetic tape at the top of the rotary cylinder differs as indicated by 1 or more, and since the flying height is large between the entrance part and the center part, the magnetic tape +91 is different from the head chip ( On the other hand, since the flying height is small between the central part fBl and the exit part 1cI, the head chip (
101), causing unstable contact between the magnetic tape (9) and the head chip (101) from the inlet to the outlet, and therefore, signal transmission also becomes unstable. There was a problem.
この発明は従来のもののかかる問題点を解決するために
なさｎたもので磁気記録再生ヘッドと磁気テープとの間
の信号伝達を安定に行なうことのできる磁気記録再生装
置の回転ヘッドアセンブリを提供することを目的とする
ものである。The present invention has been made to solve the problems of the conventional devices, and provides a rotary head assembly for a magnetic recording/reproducing device that is capable of stably transmitting signals between a magnetic recording/reproducing head and a magnetic tape. The purpose is to
この発明に係る回転ヘッドアセンブリは固定シリンダの
回転シリンダに対問したｌｌｌ１ｔこ、テープ状記録媒
体が固定シリンダに巻付く前半部において１回転シリン
ダの回転につｎて空気を吸入するスパイラルグループを
形成したものである。In the rotating head assembly according to the present invention, a fixed cylinder is connected to a rotating cylinder, and a spiral group is formed in the first half where the tape-shaped recording medium is wound around the fixed cylinder, sucking air with each rotation of the cylinder. This is what I did.
この発明においては、テープ状記録媒体が固定シリンダ
に巻付（前半部憂こ２いては固定シリンダに形成したス
パイラルグループが空気を吸入するため、テープ状記録
媒体をヘッドチップに引寄せ、一方後半部に２いては回
転シリンダと固定シリンダとの間の間隙から前半部で吸
入した空気を自然に吹き出すためテープ状記録媒体をヘ
ッドチップから引き離す。In this invention, the tape-shaped recording medium is wound around a fixed cylinder (in the first half, the spiral group formed on the fixed cylinder sucks air, so the tape-shaped recording medium is drawn to the head chip, while the second half In part 2, the tape-shaped recording medium is separated from the head chip in order to naturally blow out the air taken in in the first half from the gap between the rotating cylinder and the fixed cylinder.
以Ｆ、この発明の一実施例を第１図乃至＠７図について
説明する。第１図はこの発明の一実施例による回転ヘッ
ドアセンブリの斜視図、第２図はｌ１ｇ１図の実施例（
こおける固定シリンダの斜視図、第３図は第２図の固定
シリンダの平面図、第４崗は男１図の実施例における回
転シリンダの上Ｆ反転した斜視図、第５図は第１図の実
施例の部分縦断面図、第６図は第５図の記録再生ヘッド
近傍の正面図、＠７因は＠６図の線ｖｌ−ＸＩｌｌに沿
′りた断面図であり、従来のものと同一部分には同一符
号を付してその説明は省略する。Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a perspective view of a rotary head assembly according to an embodiment of the present invention, and FIG. 2 is an embodiment of the rotary head assembly shown in FIG.
Figure 3 is a plan view of the fixed cylinder in Figure 2, Figure 4 is an inverted perspective view of the rotary cylinder in the embodiment shown in Figure 1, and Figure 5 is an inverted perspective view of the rotating cylinder in Figure 1. 6 is a front view of the vicinity of the recording/reproducing head in FIG. 5, and @7 is a sectional view taken along the line vl-XIll in FIG. The same parts are given the same reference numerals and their explanation will be omitted.
図１こおいて、（２Ａ）は従来のものの（２日こ対応す
る回転シリンダ、（５Ａ）は従来のものの（５目こ対向
する固定シリンダであり、固定シリンダ（５Ａ）は回転
シリンダ（２人）との対向面Ｃ５０３）に半径方向に厚
みを持たせ、これに伴って回転シリンダ（２人）の固定
シリンダ（５Ａ）と対向した面は、記録再生ヘッド（１
）の取付部分（２０１Ｊが凹んでいて、記録再生ヘッド
（１）と固定シリンダ（５Ａ）の面（５０１）が互いに
接触しないようにしである。（１３）は固定シリンダ（
５ＡＪにテープ状記録媒体＋９１が巻付く前半部（〕に
おいて、固定シリンダ（５Ａ）の、回転シリンダ（２ｋ
）に対向した面（５０３）番こ形成されたスパイラルグ
ループであって、このスパイラルグループ（１３）は回
転シリンダ（２ＡＪが回転した時に空気を外部から回転
ヘッドアセンブリ内に吸入する方向に形成しである０ま
た、この実施例ではスパイラルグループ（１３）はテー
プ状記録媒体（９１が巻付き始じめる入口部（ＡＪより
手前から設けらｎている。In Fig. 1, (2A) is a rotary cylinder corresponding to the conventional one (2 days), (5A) is a fixed cylinder opposite to the conventional one (5 places); The surface C503) facing the recording/reproducing head (1 person) is made thicker in the radial direction.
) is recessed to prevent the recording/reproducing head (1) and the surface (501) of the fixed cylinder (5A) from coming into contact with each other.
In the first half () where the tape-shaped recording medium +91 is wound around 5AJ, the rotating cylinder (2k
), the spiral group (13) is formed in a direction in which air is sucked into the rotary head assembly from the outside when the rotary cylinder (2AJ) rotates. Further, in this embodiment, the spiral group (13) is provided from the entrance portion (before AJ) where the tape-shaped recording medium (91) begins to be wound.
次に動作について説明する。回転シリンダ（２人）が矢
印（１４〕の方向に回転すると前半部（Ｄでは前記スパ
イラルグループ（１３）の空気吸入作用によりテープ状
記録媒体（９）がシリンダ側に引寄せられ、後半部（口
では前半部＋１１で吸入した空気が回転シリンダ（２Ａ
Ｊと固定シリンダ（５Ａ）との間の間隙Ｄ）ら自然に吹
出さｎ、テープ状記録媒体（９）がシリンダ（２Ａ）。Next, the operation will be explained. When the rotary cylinder (two people) rotates in the direction of the arrow (14), the tape-shaped recording medium (9) is drawn toward the cylinder by the air suction action of the spiral group (13) in the first half (D), and the second half (D) At the mouth, the air inhaled in the front half +11 is transferred to a rotating cylinder (2A
The tape-shaped recording medium (9) is naturally blown out from the gap D) between J and the fixed cylinder (5A), and the tape-shaped recording medium (9) is in the cylinder (2A).
（５Ａ）力）ら引離される。その結果、前半部（Ｄでは
ヘッドチップ（１０１）とテープ状記録媒体（９）トの
間に生じているすき間が減少し、また後半部（ｊではヘ
ッドチップＬ １ｕｌｌ Ｊに対する巻き付きが大きい
ために生じているテープ状記録媒体（９）の急峻な変形
が緩和される。このことにより、ヘッドチップ（１０１
）近傍におけるテープ状記録媒体（９）の変形は、固定
シリンダ（５Ａ）に巻付く範囲全体にわたって第１０図
の（９Ｂ）の形状を示すようになり、テープ状記録媒体
（９）とヘッドチップ（１０１）との間のすき間を前記
範囲全体にわたってほぼ均一の状態に保つことができる
。なお、この実施例ではスパイラルグループ（１３）を
ｉｆ１部＋ｎ ヨリ手前から設けて、テープ状記録媒体
（９）の引寄せを入口部＋Ａｌからスムーズに行なうよ
うにしているが、前半部ｆＤ ｌこのみ設けても良い。(5A) force). As a result, the gap between the head chip (101) and the tape-shaped recording medium (9) in the first half (D) is reduced, and the gap between the head chip (101) and the tape-shaped recording medium (9) in the second half (J) is large due to the large amount of winding around the head chip (J). The sharp deformation of the tape-shaped recording medium (9) that has occurred is alleviated.This causes the head chip (101
) The deformation of the tape-shaped recording medium (9) in the vicinity of the fixed cylinder (5A) becomes as shown in (9B) in FIG. (101) can be kept substantially uniform over the entire range. In this embodiment, the spiral group (13) is provided from the front side of the if1 part +n so that the tape-shaped recording medium (9) can be drawn smoothly from the entrance part +Al, but the first half part fD l is It may be provided.
以上のようにこの発明によｎば、テープ状記録媒体が固
定シリンダに巻付く前半部において固定シリンダに空気
を吸入するスパイラルグループを設けたので、ヘッドチ
ップ近傍におけるテープ状記録媒体の変形を、固定シリ
ンダに巻付り＠囲全体にねたって安定で、はぼ均一の状
態に保つことができ、記録再生ヘッドとテープ状記録媒
体との間の安定な信号伝達が得られる効果を奏する。As described above, according to the present invention, since the spiral group that sucks air into the fixed cylinder is provided in the first half where the tape-shaped recording medium is wound around the fixed cylinder, the deformation of the tape-shaped recording medium in the vicinity of the head chip can be prevented. It can be wound around a fixed cylinder and kept in a stable and almost uniform state over the entire circumference, and has the effect of providing stable signal transmission between the recording/reproducing head and the tape-shaped recording medium.
第１図はこの発明の一実施例（こよ６回転ヘッドアセン
ブリの斜視図、第２図は第１図の実施例８こおける固定
シリンダの斜視図、＠３図は第２図の固定シリンダの平
面図、第４図は第１図の実施例における回転シリンダの
上ド反転した一斜視図、第５図は第１図の実施例の部分
縦断面図、第６因は第５図の記録再生ヘッド近傍の正面
図、第７図は′＠６図の線Ｙｌ−Ｖｌに沿った断面図、
第８図は従来の回転ヘッドアセンブリの部分縦断面図、
第９図は第８図のものの記録再生ヘッド近傍の正面図、
＠１０図は第９図の線Ｘ−Ｘに沿った断面図、＠１１図
は回転ヘッドアセンブリに対するテープ状記録媒体の巻
付きを示す平面図である。
図において、１１）は記録再生ヘッド、（２Ａ）は回転
シリンダ、（５Ａ）は固定シリンダ、（５０１３は外周
面、（５０３）は回転シリンダ（２Ａ）に対向した面、
（９）はテープ状記録媒体、（１３）はスパイラルグル
ープである。
なお、各図中同一符号は同一または相当部を示す。
代理人 弁理士 大 岩 増 雄第１図
第２図Fig. 1 is a perspective view of an embodiment of the present invention (6 rotary head assembly), Fig. 2 is a perspective view of a fixed cylinder in Embodiment 8 of Fig. 1, and Fig. 3 is a perspective view of a fixed cylinder in Fig. 2. A plan view, FIG. 4 is an inverted perspective view of the rotating cylinder in the embodiment shown in FIG. 1, FIG. 5 is a partial vertical sectional view of the embodiment shown in FIG. 1, and the sixth factor is the record in FIG. A front view of the vicinity of the reproducing head, and FIG. 7 is a cross-sectional view taken along the line Yl-Vl in FIG.
FIG. 8 is a partial vertical sectional view of a conventional rotating head assembly;
FIG. 9 is a front view near the recording/reproducing head of the one shown in FIG. 8;
Figure @10 is a sectional view taken along the line XX in Figure 9, and Figure @11 is a plan view showing the winding of the tape-shaped recording medium around the rotary head assembly. In the figure, 11) is a recording/reproducing head, (2A) is a rotating cylinder, (5A) is a fixed cylinder, (5013 is an outer peripheral surface, (503) is a surface facing the rotating cylinder (2A),
(9) is a tape-shaped recording medium, and (13) is a spiral group. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent: Masuo Oiwa, Patent Attorney Figure 1 Figure 2
Claims (1)
の回転シリンダを回転可能に支持しかつ外周面でテープ
状記録媒体をガイドする固定シリンダを備えた磁気記録
再生装置の回転ヘッドアセンブリにおいて、前記固定シ
リンダの前記回転シリンダに対向した面に、前記テープ
状記録媒体が前記固定シリンダに巻付く前半部において
、前記回転シリンダの回転につれて空気を吸入するスパ
イラルグループを形成したことを特徴とする磁気記録再
生装置の回転ヘッドアセンブリ。(1) A rotary head assembly for a magnetic recording and reproducing device comprising a rotary cylinder that holds a recording and reproducing head and a fixed cylinder that rotatably supports the rotary cylinder and guides a tape-shaped recording medium on its outer peripheral surface, wherein the fixed cylinder A magnetic recording/reproducing device characterized in that a spiral group is formed on a surface facing the rotating cylinder in the first half of the tape-shaped recording medium wound around the fixed cylinder, which sucks air as the rotating cylinder rotates. rotating head assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP97686A JPS62159369A (en) | 1986-01-06 | 1986-01-06 | Rotary head assembly for magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP97686A JPS62159369A (en) | 1986-01-06 | 1986-01-06 | Rotary head assembly for magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62159369A true JPS62159369A (en) | 1987-07-15 |
Family
ID=11488645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP97686A Pending JPS62159369A (en) | 1986-01-06 | 1986-01-06 | Rotary head assembly for magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62159369A (en) |
Cited By (2)
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|---|---|---|---|---|
| JP2005154011A (en) * | 2003-11-25 | 2005-06-16 | Xerox Corp | Air bladder packaging system and method for using the same |
| JP2007276806A (en) * | 2006-04-04 | 2007-10-25 | Epia:Kk | Packing container such as corrugated cardboard and paper-made container with air bag |
-
1986
- 1986-01-06 JP JP97686A patent/JPS62159369A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005154011A (en) * | 2003-11-25 | 2005-06-16 | Xerox Corp | Air bladder packaging system and method for using the same |
| JP2007276806A (en) * | 2006-04-04 | 2007-10-25 | Epia:Kk | Packing container such as corrugated cardboard and paper-made container with air bag |
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