JPS6128269Y2 - - Google Patents
Info
- Publication number
- JPS6128269Y2 JPS6128269Y2 JP1979087645U JP8764579U JPS6128269Y2 JP S6128269 Y2 JPS6128269 Y2 JP S6128269Y2 JP 1979087645 U JP1979087645 U JP 1979087645U JP 8764579 U JP8764579 U JP 8764579U JP S6128269 Y2 JPS6128269 Y2 JP S6128269Y2
- Authority
- JP
- Japan
- Prior art keywords
- tension
- tape
- support member
- attached
- spring
- 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
Links
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
Description
【考案の詳細な説明】
この考案はメカニカルテンシヨンサーボ機構に
係り、更に詳述すればテープをむらなく一定速度
で移送せしめるテンシヨン付与のためのメカニカ
ルテンシヨンサーボ機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION This invention relates to a mechanical tension servo mechanism, and more specifically, to a mechanical tension servo mechanism for imparting tension that allows the tape to be conveyed evenly at a constant speed.
テープをテープの巻径変化やその他の原因（バ
ツクテンシヨンの変動）にかかわらず一定速度で
移送させる手段として、従来より固定ガイドで機
構的摩擦を与える方法、ガイドローラ２個を組合
わせたループフイルターを使用した方法あるいは
コンブライアンスアームを使用した方法等により
テープに一定のテンシヨンを付与する手段が用い
られているがカセツト式テープレコーダではその
実施が困難である。 As a means of transporting the tape at a constant speed regardless of changes in the tape winding diameter or other causes (fluctuations in back tension), conventional methods include applying mechanical friction using a fixed guide, and a loop combining two guide rollers. Methods of applying a certain tension to the tape, such as using a filter or a compliance arm, have been used, but this is difficult to implement in a cassette type tape recorder.
尚、カセツトテープにおいて、消去ヘツドを利
用しテープに機械的摩擦を与えてテンシヨンを付
与する手段があるが、この場合供給リールのテー
プ巻量等により常に一定のテンシヨンを付与し難
いと云う欠点があつた。 For cassette tapes, there is a method of applying mechanical friction to the tape using an erasing head to apply tension, but this method has the disadvantage that it is difficult to apply constant tension due to the amount of tape wound on the supply reel. It was hot.
この考案は上述した欠点を除去することを目的
とするもので、その特徴とするところはテープテ
ンシヨン付与部材を作動シヤーシに枢着した第１
の支持部材に取付け、更にテープテンシヨンを検
知するテンシヨンセンサを同様に作動シヤーシに
枢着した第２の支持部材に取付け、作動シヤーシ
と前記した第１の支持部材との間および前記第１
の支持部材と第２の支持部材との間にそれぞれス
プリングを取付け、前記第２の支持部材の枢着端
にバランスさせるための突起を設けサーボ機構を
構成しテンシヨン付与手段を制御するようにした
メカニカルテンシヨンサーボ機構を提供するもの
である。以下この考案のメカニカルテンシヨンサ
ーボ機構を図に示す一実施例について詳述する。 The purpose of this invention is to eliminate the above-mentioned drawbacks, and its feature is that the tape tensioning member is pivoted to the actuating chassis.
A tension sensor for detecting tape tension is also attached to a second support member pivotally connected to the actuating chassis, and a tension sensor for detecting tape tension is attached to a second support member which is also pivotally connected to the actuating chassis.
A spring is installed between each of the supporting members and the second supporting member, and a protrusion for balancing is provided at the pivot end of the second supporting member to constitute a servo mechanism to control the tension applying means. A mechanical tension servo mechanism is provided. An embodiment of the mechanical tension servo mechanism of this invention shown in the drawings will be described in detail below.
図はこの考案のメカニカルテンシヨンサーボ機
構で、この機構は作動シヤーシ１に一端を軸２で
枢着した第１の支持部材３を取付け、この支持部
材の他端にテープテンシヨン付与部材として例え
ば消去ヘツド４を、また前記作動シヤーシ１の軸
２の中心線上に軸５で枢着した第２の支持部材６
を取付け、この支持部材の他端にカセツトの小孔
より内方へ突入し得る大きさのセンサ７をそれぞ
れ取付け、前記作動シヤーシ１の係止爪８と第１
の支持部材３の他端と、前記第１の支持部材の他
端と第２の支持部材６の前記第１の支持部材のス
プリング取付位置と同じ位置との間にスプリング
９ａ，９ｂが直線上に並ぶようにそれぞれ取付
け、前記第２の支持部材６の一端が前記一端側で
作動シヤーシ１上に取付けられたバランス用の突
起１０に接し反時計方向の回動が阻止された際、
第１の支持部材３に加わるスプリング９ａ，９ｂ
の双方の緊張力により第１の支持部材３は第２の
支持部材６と同様静止状態を得るように構成され
ている。 The figure shows a mechanical tension servo mechanism of this invention, in which a first support member 3 whose one end is pivotally connected by a shaft 2 is attached to an operating chassis 1, and a tape tension applying member is attached to the other end of the support member. A second support member 6 on which the erasing head 4 is also pivotally mounted on the center line of the shaft 2 of the working chassis 1 by means of a shaft 5.
A sensor 7 of a size capable of protruding inward from the small hole of the cassette is attached to the other end of the supporting member, and the locking pawl 8 of the operating chassis 1 and the first
The springs 9a and 9b are placed on a straight line between the other end of the support member 3 and the other end of the first support member and the same position of the second support member 6 as the spring attachment position of the first support member. When one end of the second support member 6 touches the balance protrusion 10 mounted on the operating chassis 1 on the one end side and the counterclockwise rotation is prevented,
Spring 9a, 9b applied to first support member 3
The first support member 3 is configured to obtain a stationary state similarly to the second support member 6 due to the tension forces of both.
この考案のメカニカルテンシヨンサーボ機構は
以上のように構成されており、カセツトテープを
装填した際消去ヘツド４およびセンサ７がコンパ
クトカセツトＣの前面に明けられた大孔および小
孔より作動シヤーシ１の摺動に伴ないカセツト内
部に突入し、消去ヘツド４はテープ１１をガイド
ピン１２ａ，１２ｂおよび１３に、センサ７はガ
イドピン１２ｂ，１２ｃに押当てるようにこのガ
イドピン１２ａ，１２ｂ間と１２ｂ，１２ｃ間の
テープを内方に湾曲せしめテープ１１の走行時の
テンシヨンが前記消去ヘツド４とガイドピン１２
ａ，１２ｂおよび１３とテンシヨン付与用のスプ
リング９ａにより付与される。今この機構におい
てテンシヨン付与が大きくなり、センサ７がこの
状態をキヤツチすると、すなわちテープ１１のテ
ンシヨンが大きくなるとサーボ用スプリング９ｂ
を引伸する方向に第２の支持部材６が回動し、第
１の支持部材３に加わつていたスプリング９ａ，
９ｂによる付勢力にアンバランスが生じる。この
アンバランスを解消するよう前記第１の支持部材
３が第２の支持部材６の回動方向（時計方向）に
スプリング９ｂの付勢力により回動し、両スプリ
ング９ａ，９ｂによる第１の支持部材３への付勢
力がバランスする点で前記回動は停止する。 The mechanical tension servo mechanism of this invention is constructed as described above, and when a cassette tape is loaded, the erasing head 4 and the sensor 7 are inserted into the operating chassis 1 through the large and small holes drilled in the front surface of the compact cassette C. As it slides, it enters the inside of the cassette, and the erasing head 4 presses the tape 11 against the guide pins 12a, 12b, and 13, and the sensor 7 presses the tape 11 against the guide pins 12b, 12c between the guide pins 12a, 12b, and 12b. The tape 12c is bent inward so that the tension when the tape 11 runs is between the erasing head 4 and the guide pin 12.
a, 12b and 13, and a tension applying spring 9a. Now, in this mechanism, when the tension applied becomes large and the sensor 7 catches this state, that is, when the tension of the tape 11 becomes large, the servo spring 9b
The second support member 6 rotates in the direction of stretching the springs 9a and 9a, which had been applied to the first support member 3.
An imbalance occurs in the biasing force applied by 9b. In order to eliminate this imbalance, the first support member 3 is rotated in the rotation direction (clockwise) of the second support member 6 by the biasing force of the spring 9b, and the first support member 3 is rotated by the urging force of the spring 9b. The rotation stops at the point where the urging force on the member 3 is balanced.
したがつて第１の支持部材３の前記方向への回
動により消去ヘツド４とガイドピン１３との間の
間隙が大きくなりテープ１１に加えていたテンシ
ヨンが小さくなる。 Therefore, by rotating the first support member 3 in the above direction, the gap between the erasing head 4 and the guide pin 13 becomes larger, and the tension applied to the tape 11 becomes smaller.
テンシヨンが小さくなるとセンサ７がこの状態
をキヤツチ、すなわちテープ１１のテンシヨンが
小さくなるとサーボ用スプリング９ｂによる第１
の支持部材３への付勢力がテンシヨン用スプリン
グ９ａによる第１の支持部材３への付勢力に比し
小さくなるので第１および第２の支持部材３，７
が共に反時計方向に回動し、消去ヘツド４がガイ
ドピン１３にテープ１１を強く押し当てテンシヨ
ンの増加を計る。この場合第２の支持部材６は前
記方向への回動に当たりその一端が突起１０に対
接する点で回動が阻止されるため、この状態でテ
ープ１１に最大のテンシヨンがかかるようにな
る。 When the tension becomes small, the sensor 7 catches this state. In other words, when the tension of the tape 11 becomes small, the servo spring 9b detects the first
Since the biasing force applied to the support member 3 by the tension spring 9a is smaller than the biasing force applied to the first support member 3 by the tension spring 9a, the first and second support members 3, 7
both rotate counterclockwise, and the erasing head 4 strongly presses the tape 11 against the guide pin 13 to increase the tension. In this case, when the second support member 6 rotates in the aforementioned direction, the rotation is prevented at the point where one end thereof comes into contact with the protrusion 10, so that maximum tension is applied to the tape 11 in this state.
この機構ではこのようにテンシヨン検出手段に
よりテンシヨンの変動を検出するとテンシヨン付
与手段のみを制御してテンシヨンを加減し常に所
定のテンシヨンがテープ１１に付与されるように
作用する。 In this mechanism, when a change in tension is detected by the tension detecting means, only the tension applying means is controlled to adjust the tension so that a predetermined tension is always applied to the tape 11.
尚、一実施例として、消却ヘツドをテンシヨン
付与部材として利用した場合につき述べたが、消
却ヘツドに限らず単にフエルト等の部材を用いて
もよく、又、ガイドピン１３との共働（狭圧）に
よりテンシヨンをテープに付与する場合に限ら
ず、単にテープとテンシヨン付与部材とのフリシ
ヨンによつてテンシヨン付与を行なう場合におい
ても本考案を適用し得ることは容易に判明するで
あろう。 As an example, a case has been described in which the extinguishing head is used as a tensioning member, but it is not limited to the extinguishing head, and a member such as felt may also be used. ), it will be readily apparent that the present invention can be applied not only to the case where tension is applied to the tape by the tension applying member, but also to the case where tension is applied simply by friction between the tape and the tension applying member.
以上述べたようにこの考案はテープテンシヨン
付与部材を作動シヤーシに一端を枢着した第１の
支持部材の他端に取付け、更にテープテンシヨン
を検知するセンサを作動シヤーシに一端を同様に
枢着した第２の支持部材の他端に取付け、前記作
動シヤーシと第１の支持部材との間に前記テンシ
ヨン付与部材をテープに圧接させるテンシヨン付
与用のスプリングを、前記第１の支持部材と第２
の支持部材との間にサーボ用のスプリングをそれ
ぞれ取付け、センサによるテープテンシヨンの増
減の検知に応じテンシヨンをテープに付与する前
記手段を制御するようにしたので、供給リールの
テープ巻取量に関係なく常に一定のテンシヨンを
付与することが出来、センサによるテンシヨンの
検知量に追従してテンシヨンを付与出来、その構
成が簡単である等の効果を有する。 As described above, in this invention, a tape tension applying member is attached to the other end of the first support member, one end of which is pivotally connected to the operating chassis, and a sensor for detecting tape tension is attached to the other end of the first support member, one end of which is pivoted to the operating chassis. A spring for applying tension is attached to the other end of the second supporting member that is attached to the tape, and presses the tensioning member against the tape between the operating chassis and the first supporting member. 2
A servo spring is installed between each supporting member, and the means for applying tension to the tape is controlled according to the increase or decrease in tape tension detected by the sensor. It has advantages such as being able to always apply a constant tension regardless of the tension, being able to apply tension by following the amount of tension detected by the sensor, and having a simple configuration.
またテンシヨン検知部材とテンシヨン制御部材
とがサーボ用スプリングを介して結合されている
ことにより、テープテンシヨンの急激な変化に対
しても、テンシヨン検知部材の変位がスプリング
によつて適度に緩衝されてテンシヨン制御部材へ
と伝達され、テープ走行系に不要な振動を与えた
り、ワウフラツタを劣化させるような悪影響を防
止することができる。 In addition, since the tension detection member and the tension control member are connected via a servo spring, the displacement of the tension detection member is moderately buffered by the spring even in the event of sudden changes in tape tension. It is possible to prevent harmful effects such as being transmitted to the tension control member and causing unnecessary vibrations to the tape running system and deteriorating wow and flutter.
またテンシヨン検知部材が変位しても、テンシ
ヨン制御部材の応答が、ただちにテンシヨンから
離間または圧接するような２値的制御ではなく、
テンシヨン付与用のスプリングとサーボ用スプリ
ングの圧接力の差としてテンシヨン走行系に付与
されるようになつているため、きわめて微妙なテ
ープテンシヨンの変位から急激な変位に対して
も、これを的確に且つ連続的に制御し、テープ走
行系を常に安定に保つことができる。 Furthermore, even if the tension detection member is displaced, the response of the tension control member is not a binary control in which it immediately separates from or presses against the tension.
Since the pressure difference between the tension applying spring and the servo spring is applied to the tension running system, it is possible to accurately respond to even the most subtle to sudden tape tension displacements. In addition, the tape running system can be continuously controlled and kept stable at all times.
図はこの考案の一実施例であるメカニカルテン
シヨンサーボ機構の構成図である。
符号の説明、１……作動シヤーシ、２，５……
軸、３……第１の支持部材、４……ヘツド、６…
…第２の支持部材、７……センサ、８……係止
爪、９ａ，９ｂ……スプリング、１０……突起、
１１……テープ、１２ａ，１２ｂ，１２ｃ，１３
……ガイドピン。
The figure is a configuration diagram of a mechanical tension servo mechanism that is an embodiment of this invention. Explanation of symbols, 1... Operating chassis, 2, 5...
Shaft, 3...first support member, 4...head, 6...
...Second support member, 7...Sensor, 8...Latching claw, 9a, 9b...Spring, 10...Protrusion,
11...Tape, 12a, 12b, 12c, 13
……guide pin.
Claims (1)
端を枢着した第１の支持部材の他端に取付け、更
にテープテンシヨンを検知するセンサを作動シヤ
ーシに一端を同様に枢着した第２の支持部材の他
端に取付け、前記作動シヤーシと第１の支持部材
との間に前記テンシヨン付与部材をテープに圧接
させるテンシヨン付与用のスプリングを、前記第
１の支持部材と第２の支持部材との間にサーボ用
のスプリングをそれぞれ取付け、センサによるテ
ープテンシヨンの増減の検知に応じテンシヨンを
テープに付与するようにしたことを特徴とするメ
カニカルテンシヨンサーボ機構。 A tape tension applying member is attached to the other end of the first support member whose one end is pivotally connected to the actuating chassis, and a sensor for detecting tape tension is attached to the second support member whose one end is similarly pivotally connected to the actuating chassis. A tensioning spring is attached to the other end and presses the tensioning member against the tape between the operating chassis and the first supporting member. A mechanical tension servo mechanism characterized in that a servo spring is attached to each of the servo springs, and tension is applied to the tape in response to an increase or decrease in tape tension detected by a sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979087645U JPS6128269Y2 (en) | 1979-06-28 | 1979-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979087645U JPS6128269Y2 (en) | 1979-06-28 | 1979-06-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS569549U JPS569549U (en) | 1981-01-27 |
| JPS6128269Y2 true JPS6128269Y2 (en) | 1986-08-22 |
Family
ID=29320851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979087645U Expired JPS6128269Y2 (en) | 1979-06-28 | 1979-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6128269Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135112U (en) * | 1976-04-08 | 1977-10-14 |
-
1979
- 1979-06-28 JP JP1979087645U patent/JPS6128269Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS569549U (en) | 1981-01-27 |
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