JPH0799599B2 - Cleaning device - Google Patents
Cleaning deviceInfo
- Publication number
- JPH0799599B2 JPH0799599B2 JP61287923A JP28792386A JPH0799599B2 JP H0799599 B2 JPH0799599 B2 JP H0799599B2 JP 61287923 A JP61287923 A JP 61287923A JP 28792386 A JP28792386 A JP 28792386A JP H0799599 B2 JPH0799599 B2 JP H0799599B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic tape
- cleaning
- fixed drum
- cleaning member
- drum
- 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 - Lifetime
Links
- 238000004140 cleaning Methods 0.000 title claims description 45
- 238000005299 abrasion Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Facsimile Scanning Arrangements (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、磁気テープをヘリカル状に巻回し走行させる
シリンダの固定ドラム上に設けられたリード部での磁気
テープ走行を安定にさせるためのクリーニング装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for stabilizing the running of a magnetic tape on a lead portion provided on a fixed drum of a cylinder that winds and runs a magnetic tape in a helical shape. It is about.
従来の技術 従来より磁気テープをヘリカル状に巻回し走行させるシ
リンダの固定ドラム上に設けられた磁気テープ規制用の
リード部のクリーニング装置としては特になく、記録再
生されたビデオ信号の再生出力の変化の定期測定により
クリーニング要否が判断されている。2. Description of the Related Art Conventionally, there is no particular cleaning device for a magnetic tape regulation lead portion provided on a fixed drum of a cylinder that winds and runs a magnetic tape in a helical shape, and changes in reproduction output of recorded and reproduced video signals. Whether or not cleaning is required is determined by the regular measurement of.
第５図及び第６図を用いクリーニングが必要になる過程
について説明する。A process requiring cleaning will be described with reference to FIGS. 5 and 6.
第５図は一般的なシリンダの構成を示すものであり、同
図ａは平面図、同図ｂは正面図である。FIG. 5 shows the structure of a general cylinder. FIG. 5A is a plan view and FIG. 5B is a front view.
同図において、１は磁気ヘッド２を内蔵する回転ドラム
であり、３は磁気テープ４の走行規制用ポストである。In the figure, reference numeral 1 is a rotary drum having a built-in magnetic head 2, and reference numeral 3 is a post for restricting running of the magnetic tape 4.
回転ドラム１と同軸上にて対向する固定ドラム５には、
磁気テープ４の端面を規制するリード部６が設けられて
いる。The fixed drum 5, which is coaxially opposed to the rotary drum 1, includes:
A lead portion 6 that regulates the end surface of the magnetic tape 4 is provided.
ここで回転ドラム１の回転方向、磁気テープ４の走行方
向は、磁気テープ４の走行安定性の面から通常同図の矢
印で示す方向となっている。Here, the rotating direction of the rotary drum 1 and the running direction of the magnetic tape 4 are usually the directions shown by the arrows in the figure from the viewpoint of running stability of the magnetic tape 4.
発明が解決しようとする問題点 しかし、本構成に示すものでは、第６図に示すように磁
気テープ４の走行繰返しに伴い、磁気テープ４に付着し
たホコリ、あるいは磁気テープ４自身の走行上で生じる
摩耗粉などの付着物７が、固定ドラム５のリード部６の
面ではがされるように作用を受けるため堆積し易くす
る。However, in the configuration shown in FIG. 6, the dust adhered to the magnetic tape 4 or the magnetic tape 4 itself travels as the magnetic tape 4 travels repeatedly as shown in FIG. The adhering substances 7 such as abrasion powder that are generated act on the surface of the lead portion 6 of the fixed drum 5 so that they are easily deposited.
付着物７の堆積が進行していくと、磁気テープ４は付着
物７によりリード部６より浮き上げさせられる。As the deposition of the adhering matter 7 progresses, the magnetic tape 4 is lifted from the lead portion 6 by the adhering matter 7.
そのため、磁気テープ４上に記録された信号トラックの
位置と磁気ヘッド２の走査位置に誤差が生じ正規な信号
の伝達が不可能となる。Therefore, an error occurs between the position of the signal track recorded on the magnetic tape 4 and the scanning position of the magnetic head 2, and it becomes impossible to transmit a normal signal.
よって、前述したように、定期的な再生出力のチェック
を行い上記付着物７が原因で正規な信号の伝達が不可能
となればクリーニング操作が必要となる。Therefore, as described above, if the regular reproduction output is checked and the normal signal cannot be transmitted due to the deposit 7, the cleaning operation is required.
しかし、クリーニング操作としては、先端が割に鋭くと
がった軟かい材質のもので軽く除去する必要があり熟練
度を必要としたり、操作中の磁気ヘッドの破損などが生
じることもあり作業者の負担あるいは部品の破損にも連
がり易くメンテナンスコストの上昇を伴うものである。However, for the cleaning operation, it is necessary to remove it with a soft material with a sharp tip and lightly remove it. Alternatively, damage to parts is likely to occur and maintenance costs increase.
また、昨今のように装置の小型化が進んでくると、作業
自体がより実施し難くなるなどの問題が発生する。Further, as the size of the device has been reduced as in recent years, there is a problem that the work itself becomes more difficult to carry out.
そこで本発明は、特に定期的にクリーニングを行なわな
くても良いようにできるクリーニング装置を提供するこ
とを目的とする。本発明のクリーニング装置を機器内部
に配設させることにより信号の記録再生が磁気テープと
磁気ヘッド間で正常かつ安定に行なわせることができ
る。Therefore, it is an object of the present invention to provide a cleaning device capable of eliminating the need for periodic cleaning. By disposing the cleaning device of the present invention inside the equipment, it is possible to record and reproduce signals normally and stably between the magnetic tape and the magnetic head.
問題点を解決するための手段 上記問題を解決するための本発明の技術的な手段は、リ
ード部上を摺動するクリーニング部材を含むクリーニン
グ装置を固定ドラムに配設し装置稼動の所定間隔あるい
は装置の所定モード（例えばローディング動作）でクリ
ーニング装置を動作させリード部のクリーニングを行な
わせるものである。Means for Solving the Problems Technical means of the present invention for solving the above problems is to dispose a cleaning device including a cleaning member that slides on a lead portion on a fixed drum, or to set a predetermined interval for operating the device. The cleaning device is operated in a predetermined mode (for example, loading operation) of the device to clean the lead portion.
作用 この技術的手段による作用は次のようになる。Action The action of this technical means is as follows.
すなわち、磁気テープの走行に伴い固定ドラムのリード
部上に磁気テープのホコリ、摩耗粉などが付着しても装
置の外部からは全く手を触れずとも、クリーニング装置
を動作させることにより前記付着物が除去可能となるも
のである。That is, even if dust, abrasion powder, etc. of the magnetic tape adheres to the lead portion of the fixed drum as the magnetic tape runs, the cleaning device can be operated without touching it from the outside of the device. Can be removed.
実施例 以下、本発明の一実施例を添付図面にもとづいて説明す
る。Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図及び第２図（第１図矢視Ｂ）において、５は固定
ドラム、６は固定ドラム５の外周に設けられたリード
部、固定ドラム５の外周面で摺動可能なクリーニング部
材８、このクリーニング部材８は一端部９にブラシ状の
クリーニング部10を有し他端部11は固定ドラム５の半径
方向へ突出している。In FIGS. 1 and 2 (view B in FIG. 1), 5 is a fixed drum, 6 is a lead portion provided on the outer periphery of the fixed drum 5, and a cleaning member 8 slidable on the outer peripheral surface of the fixed drum 5. The cleaning member 8 has a brush-shaped cleaning portion 10 at one end portion 9 thereof, and the other end portion 11 thereof projects in the radial direction of the fixed drum 5.
支軸12,13は固定ドラム５に起立しており両支軸12,13は
クリーニング部材８に設けられた長孔部14を案内する。The support shafts 12 and 13 stand upright on the fixed drum 5, and the support shafts 12 and 13 guide the elongated hole portion 14 provided in the cleaning member 8.
支軸13及びクリーニング部材８の他端部11間にバネ15が
掛けられており、クリーニング部材８を紙面上で右の方
向に附勢力が働くようになっている。A spring 15 is hooked between the support shaft 13 and the other end 11 of the cleaning member 8 so that the cleaning member 8 is biased in the right direction on the paper surface.
また、クリーニング部材８の一端部９の詳細を第１図の
矢視Ａ−Ａである第３図に示す。Further, details of the one end portion 9 of the cleaning member 8 are shown in FIG. 3 which is an arrow AA of FIG.
一端部９は、回転ドラム１に内蔵される磁気ヘッド２の
突出量δ１よりも大なる値δ２で回転ドラム１及び固定
ドラム５の外周面より離れている。The one end portion 9 is separated from the outer peripheral surfaces of the rotating drum 1 and the fixed drum 5 by a value δ 2 larger than the protrusion amount δ 1 of the magnetic head 2 built in the rotating drum 1.
また、クリーニング部10は一端部９に対し傾斜させられ
固定ドラム５のリード部６に当接している。Further, the cleaning portion 10 is inclined with respect to the one end portion 9 and is in contact with the lead portion 6 of the fixed drum 5.
次に本クリーニング部材の動作について説明する。Next, the operation of the cleaning member will be described.
第４図において、クリーニング部材８の他端部は通常は
バネ15の附勢力により11の位置にある。In FIG. 4, the other end of the cleaning member 8 is normally at the position 11 due to the urging force of the spring 15.
16は装置の磁気テープローディング動作に伴い移動する
ローディングリング（図示せず）などに固定され、それ
らと共に可動するレバーである。Reference numeral 16 is a lever that is fixed to a loading ring (not shown) or the like that moves along with the magnetic tape loading operation of the apparatus, and that moves together with it.
そのレバー16がローディング動作途中にクリーニング部
材８の他端部11と当接し、ローディング動作終了時点で
は16′の位置となる。The lever 16 comes into contact with the other end 11 of the cleaning member 8 during the loading operation, and is in the 16 'position at the end of the loading operation.
よってレバー16に当接しているクリーニング部材８の他
端部11は11′に移動し結果的にクリーニング部10は固定
ドラム５のリード部６より摺動しながら離れていくこと
となる。Therefore, the other end portion 11 of the cleaning member 8 which is in contact with the lever 16 moves to 11 ', and as a result, the cleaning portion 10 slides away from the lead portion 6 of the fixed drum 5.
クリーニング部10がリード部より離れた後、磁気テープ
４はローディング動作によりリード部６に掛かり、磁気
テープ４の走行系が完了する。After the cleaning unit 10 is separated from the lead unit, the magnetic tape 4 is caught on the lead unit 6 by the loading operation, and the running system of the magnetic tape 4 is completed.
以上の説明でわかるように、ローディング動作毎にクリ
ーニング部材８が移動することとなり、クリーニング部
により固定ドラム５のリード部６での付着物は常に除去
されるものである。As can be seen from the above description, the cleaning member 8 moves every loading operation, and the adhering matter on the lead portion 6 of the fixed drum 5 is always removed by the cleaning unit.
なお、本実施例では、クリーニング部材の動作範囲を固
定ドラムのリード部上で特に磁気テープ進入側と制限し
たが、クリーニング部材を固定ドラムに形成されたリー
ド部全域に対し動作させても良い。In this embodiment, the operating range of the cleaning member is limited to the magnetic tape entry side on the lead portion of the fixed drum, but the cleaning member may be operated over the entire lead portion formed on the fixed drum.
また、クリーニング部をブラシ状としたが、スポンジの
ような弾性部材としても良い。Further, although the cleaning portion has a brush shape, it may be an elastic member such as sponge.
また、クリーニング部材の移動をローディング動作と連
携させたが全くの別駆動方法としても良い。Further, although the movement of the cleaning member is linked with the loading operation, a completely different driving method may be used.
発明の効果 本発明は、磁気テープをヘリカル状に巻回し走行させて
なるシリンダの少くとも固定ドラムの磁気テープ進入側
のリード部上でクリーニング部材を摺動動作させるた
め、常にリード部上の付着物が除去可能となるため装置
のメンテナンスコストの低減あるいは、機器の信頼性向
上などが図れるなど、その実用的効果は大なるものであ
る。According to the present invention, since the cleaning member slides on the lead portion on the magnetic tape entry side of at least the fixed drum of the cylinder in which the magnetic tape is wound and run, the attachment on the lead portion is always performed. Since the kimono can be removed, the maintenance cost of the device can be reduced, and the reliability of the device can be improved.
第１図は本発明における一実施例のクリーニング装置の
平面図、第２図は同クリーニング装置の矢視Ｂの正面
図、第３図は同クリーニング装置の矢視Ａ−Ａの断面
図、第４図は同クリーニング装置の動作を示す平面図、
第５図ａ及びｂは従来のシリンダを示す平面図及び正面
図、第６図は固定ドラムのリード部における付着物を示
す正面図である。 ６……リード部、７……付着物、８……クリーニング部
材、10……クリーニング部。FIG. 1 is a plan view of a cleaning device according to an embodiment of the present invention, FIG. 2 is a front view of the cleaning device in the direction of arrow B, and FIG. 3 is a cross-sectional view of the cleaning device in the direction of arrow AA of FIG. FIG. 4 is a plan view showing the operation of the cleaning device,
FIGS. 5a and 5b are a plan view and a front view showing a conventional cylinder, and FIG. 6 is a front view showing a deposit on a lead portion of a fixed drum. 6 ... Lead part, 7 ... adhered matter, 8 ... cleaning member, 10 ... cleaning part.
Claims (2)
回転ドラムの同軸上に対向して設けられ磁気テープの走
行を規制するリード部を有する固定ドラムに磁気テープ
をヘリカル状に巻回し走行させてなるシリンダの、少く
とも固定ドラムの磁気テープ進入側のリード部上でクリ
ーニング部材を摺動動作させることを特徴とするクリー
ニング装置。1. A magnetic drum is helically wound around a rotary drum having a built-in magnetic head, and a fixed drum provided coaxially with the rotary drum so as to restrict the running of the magnetic tape. A cleaning device in which a cleaning member is slid on a lead portion of a cylinder formed by at least a magnetic tape entrance side of a fixed drum.
のシリンダへのローディング動作に連携させて行うこと
を特徴とする特許請求の範囲第１項に記載のクリーニン
グ装置。2. The cleaning device according to claim 1, wherein the sliding operation of the cleaning member is performed in cooperation with the loading operation of the magnetic tape into the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61287923A JPH0799599B2 (en) | 1986-12-03 | 1986-12-03 | Cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61287923A JPH0799599B2 (en) | 1986-12-03 | 1986-12-03 | Cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63140443A JPS63140443A (en) | 1988-06-13 |
| JPH0799599B2 true JPH0799599B2 (en) | 1995-10-25 |
Family
ID=17723477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61287923A Expired - Lifetime JPH0799599B2 (en) | 1986-12-03 | 1986-12-03 | Cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0799599B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT395488B (en) * | 1991-03-18 | 1993-01-25 | Philips Nv | DEVICE FOR RECORDING AND PLAYING BACK SIGNALS WITH AT LEAST ONE ROTATING MAGNETIC HEAD |
-
1986
- 1986-12-03 JP JP61287923A patent/JPH0799599B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63140443A (en) | 1988-06-13 |
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