JPS6013321A - Reversing device of magnetic head - Google Patents
Reversing device of magnetic headInfo
- Publication number
- JPS6013321A JPS6013321A JP11996383A JP11996383A JPS6013321A JP S6013321 A JPS6013321 A JP S6013321A JP 11996383 A JP11996383 A JP 11996383A JP 11996383 A JP11996383 A JP 11996383A JP S6013321 A JPS6013321 A JP S6013321A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- movable frame
- magnetic head
- supporting
- fixed frame
- 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.)
- Granted
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
- G11B5/54—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 provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5513—Specially adapted for transducing in both travelling directions of tape
Abstract
Description
【発明の詳細な説明】
この発明は磁気ヘッドの反転装置に係り、磁気テープの
再生方向を自動的に切換える、所謂オートリバース方式
のテープレコーダの磁気ヘッドの反転装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head reversing device, and more particularly to a magnetic head reversing device for a so-called auto-reverse type tape recorder, which automatically switches the reproduction direction of a magnetic tape.
（１）
従来、テープレコーダでは再生時、磁気テープをその再
生方向に応じ、例えば、カセットテープを操作者が反転
させて所望の再生状態を得るのが一般的である。近年、
磁気テープの反転を自動又は操作によって切換えるオー
トリバース方式のテープレコーダが開発されている。(1) Conventionally, when playing back a magnetic tape in a tape recorder, it is common for an operator to reverse the magnetic tape depending on the direction of playback, for example, to obtain a desired playback state. recent years,
Auto-reverse type tape recorders have been developed in which the magnetic tape is reversed automatically or manually.
従来、この種のテープレコーダにおいて磁気テープの再
生方向を切換える場合、１つの磁気ヘッドを反転させる
ことによって再生方向を切換える方式が実用化されてい
るが、この方式には磁気ヘッドの反転装置が必要となる
。従来の磁気ヘッドの反転装置は、その構成が複雑であ
るとともに、一定の精度を維持することから回転軸にラ
ジアル軸受を使用し、その価格が高くなる欠点があった
。Conventionally, when switching the playback direction of a magnetic tape in this type of tape recorder, a method has been put into practical use in which the playback direction is switched by reversing one magnetic head, but this method requires a magnetic head reversal device. becomes. Conventional magnetic head reversing devices have a complicated structure, and in order to maintain a certain level of accuracy, a radial bearing is used for the rotating shaft, which has the drawback of increasing the price.
また、ラジアル軸受では内部回転部をスプリングによっ
て一方向に付勢しているため、ボール部の摩耗によって
回転部にがたつきを生じ、磁気ヘッドの位置を狂わせる
ため、波形歪の発生、隣接トラックの再生によるクロス
トークの発生、音ずれを生じるおそれがあった。In addition, in radial bearings, the internal rotating part is biased in one direction by a spring, so wear of the ball part causes the rotating part to wobble, which disturbs the position of the magnetic head, causing waveform distortion and adjacent tracks. There was a risk that crosstalk and sound lag could occur due to playback.
（２）
この発明は軸受部の構造を簡略化するとともに、その小
型化を図った磁気ヘッドの反転装置の提供を目的とする
。(2) An object of the present invention is to provide a magnetic head reversing device that has a simplified structure of a bearing portion and is also miniaturized.
この発明は、固定枠に回転支持部を形成し、この回転支
持部に可動枠の支持軸を挿通させる透孔を形成するとと
もに、この透孔の内壁面に第１の回転支持面を形成し、
前記回転支持部の外側部に臨む第２の回転支持面を前記
可動枠に形成し、前記第１の回転支持面と支持軸との間
に複数のボールを挿入するとともに、前記第２の回転支
持面と回転支持部との間に複数のボールを挿入し、磁気
ヘッドを取付けた可動枠を固定枠に前記各ボールを介し
回動可能に支持させたことを特徴とするものである。In this invention, a rotation support part is formed in a fixed frame, a through hole is formed in this rotation support part through which a support shaft of a movable frame is inserted, and a first rotation support surface is formed on an inner wall surface of this through hole. ,
A second rotation support surface facing the outer side of the rotation support part is formed on the movable frame, a plurality of balls are inserted between the first rotation support surface and the support shaft, and the second rotation support surface is formed on the movable frame. The present invention is characterized in that a plurality of balls are inserted between the support surface and the rotary support portion, and the movable frame to which the magnetic head is attached is rotatably supported by the fixed frame via the balls.
以下、この発明を図面に示した実施例を参照して詳細に
説明する。Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
第１図及び第２図はこの発明の磁気ヘッドの反転装置の
実施例を示し、第１図はその一部を切欠いた側面図、第
２図はその一部を切欠いた平面図を示している。1 and 2 show an embodiment of a reversing device for a magnetic head according to the present invention, FIG. 1 is a partially cut-away side view thereof, and FIG. 2 is a partially cut-away plan view thereof. There is.
（３）
図において、固定枠２は両側部に形成された取付孔４．
６を介してテープレコーダのフレームに強固に固定され
る。この固定枠２の中央部には可動枠８が回転可能に支
持され、この可動枠８には磁気ヘッド１０を保持する保
持枠１２が着脱可能に固定されている。(3) In the figure, the fixed frame 2 has mounting holes 4 formed on both sides.
6 to the frame of the tape recorder. A movable frame 8 is rotatably supported at the center of the fixed frame 2, and a holding frame 12 for holding a magnetic head 10 is detachably fixed to the movable frame 8.
前記固定枠２の中央部には前記可動枠８を回転可能に支
持するための円柱状の回転支持部１４が形成されている
。この回転支持部１４の周囲部には断面コ字状の凹部１
６が形成されている。回転支持部１４の中央部には、可
動枠８の中央部に設けられた支持軸１日を挿通させる透
孔２ｏが形成され、この透孔２０の内壁部には回転支持
面２２が形成されている。この回転支持面２２は図面上
、例えば下方に４５°拡関する円錐面で形成されている
。A cylindrical rotation support part 14 for rotatably supporting the movable frame 8 is formed in the center of the fixed frame 2. A concave portion 1 having a U-shaped cross section is provided around the rotation support portion 14.
6 is formed. A through hole 2o is formed in the center of the rotation support part 14, through which a support shaft provided at the center of the movable frame 8 is inserted, and a rotation support surface 22 is formed in the inner wall of the through hole 20. ing. In the drawing, the rotation support surface 22 is formed, for example, as a conical surface extending downward by 45 degrees.
前記支持軸１８には前記回転支持面２２の部分を閉塞す
る支持リング２４が固定されるとともに、その下部にス
プリング２６を介して支持軸１８を回転させる歯車２８
が固定されている。この歯車（４）
２８にはスプリング２６のストッパを兼用し、図示して
いない駆動機構が連結される。スプリング２６は円板状
を成し、それをＳ字状に折曲して弾力性を持たせたもの
である。そして、支持リング２４と前記第１の回転支持
面２２との間には複数のボール３０が設置され、支持軸
１８は固定枠２の回転支持面２２に回転可能に支持され
ている。A support ring 24 that closes off a portion of the rotation support surface 22 is fixed to the support shaft 18, and a gear 28 that rotates the support shaft 18 via a spring 26 is attached to the lower part of the support ring 24.
is fixed. This gear (4) 28 also serves as a stopper for the spring 26, and is connected to a drive mechanism (not shown). The spring 26 has a disk shape and is bent into an S shape to provide elasticity. A plurality of balls 30 are installed between the support ring 24 and the first rotation support surface 22, and the support shaft 18 is rotatably supported by the rotation support surface 22 of the fixed frame 2.
また、固定枠２に形成された凹部１６には、前記可動枠
８の回転支持部３２が臨ませられ、この回転支持部３２
の内側には４５°で拡開する円錐面からなる第２の回転
支持面３４が形成され、この回転支持面３４と固定枠２
の回転支持部１４の外周部及び凹部１６の内底面との間
には、複数のボール３５が設置され、固定枠２には可動
枠８の回転支持部３２が回転可能に支持されている。Further, the rotary support portion 32 of the movable frame 8 faces the recess 16 formed in the fixed frame 2.
A second rotation support surface 34 consisting of a conical surface expanding at an angle of 45 degrees is formed on the inside of the fixed frame 2.
A plurality of balls 35 are installed between the outer peripheral part of the rotation support part 14 and the inner bottom surface of the recess 16, and the rotation support part 32 of the movable frame 8 is rotatably supported by the fixed frame 2.
そして、可動枠８の上面部には磁気ヘッド１０を保持す
る保持枠１２が着脱可能に取付けられている。即ち、可
動枠８の上部には固定突部３６．３８が対抗して形成さ
れ、この固定突部３６．３８は内方にほぼ４５°の角度
でその内部に凹部４０（５）
が形成されている。磁気ヘッド１０を固定する保持枠１
２の両辺部には、前記凹部４０に係合する保持凸部４２
．４４が形成されている。また、可動枠８の上面には板
ばね４６を介して保持枠１２が載置され、その前後方向
は可動枠８の突部４８に固定した位置調整ねじ５０と、
板ばね４６の突部５２とによって把持されている。A holding frame 12 for holding the magnetic head 10 is detachably attached to the upper surface of the movable frame 8. That is, a fixed protrusion 36.38 is formed in opposition to the upper part of the movable frame 8, and this fixed protrusion 36.38 has a recess 40(5) formed therein at an angle of approximately 45°. ing. Holding frame 1 that fixes the magnetic head 10
A holding convex portion 42 that engages with the concave portion 40 is provided on both sides of the
．． 44 is formed. Further, the holding frame 12 is mounted on the upper surface of the movable frame 8 via a leaf spring 46, and the position adjustment screw 50 fixed to the protrusion 48 of the movable frame 8 is attached in the front and rear direction.
It is held by the protrusion 52 of the leaf spring 46.
また、固定枠２には可動枠８の回転を阻止するストッパ
ねじ５４．５６がコイルスプリング５８を介挿して固定
され、その先端部が可動枠８の回転範囲内に臨ませられ
ている。一方、可動枠８の側部には、係止突部６０が突
設され、その当接部には当接ねじ６２Ａ、６２Ｂが固定
されている。Further, stopper screws 54 and 56 for preventing the rotation of the movable frame 8 are fixed to the fixed frame 2 with coil springs 58 interposed therebetween, and their tips are exposed within the rotation range of the movable frame 8. On the other hand, a locking protrusion 60 is protruded from the side of the movable frame 8, and abutment screws 62A and 62B are fixed to the abutment portions of the locking protrusion 60.
以上のように構成したので、保持枠１２に固定された磁
気ヘッド１０は、保持枠１２とともに、可動枠８を介し
て固定枠２に所定角度回転可能に支持される。即ち、可
動枠８は支持軸１８の後端部の歯車２８に図示しない駆
動機構を介して第２図に示す矢印Ａ−Ｂ方向に回転させ
ることができ、磁気ヘッド１０を反転させることができ
る。第２（６）
図の示す状態は、矢印Ｂ方向に１０°程度変位した状態
を示している。With the above configuration, the magnetic head 10 fixed to the holding frame 12 is rotatably supported by the fixed frame 2 via the movable frame 8 together with the holding frame 12 by a predetermined angle. That is, the movable frame 8 can be rotated in the direction of arrow A-B shown in FIG. 2 via a gear 28 at the rear end of the support shaft 18 via a drive mechanism (not shown), and the magnetic head 10 can be reversed. . The state shown in FIG. 2 (6) shows a state in which it is displaced by about 10° in the direction of arrow B.
この場合、可動枠８の回転範囲及びその変位調整は、ス
トッパねじ５４．５６の突出量を下限することにより行
うことができる。In this case, the rotation range of the movable frame 8 and its displacement can be adjusted by lowering the protrusion amount of the stopper screws 54, 56.
このような構成によれば、磁気ヘッド１０を自由に回転
させ、磁気テープの再生方向を任意に選択できるととも
に、ポール３０．３５の位置が一定距離だけ離間してい
ることから、安定な回動状態が得られ、且つその回転機
構の小型化を図ることができる。特に、回転支持機構は
、極めて簡単な構成で、偏平に構成できるため、小型化
とともに、従来のようなラジアル軸受を用いていないの
で、その構成は簡略化され、製造コストの低減を図るこ
とができる。According to such a configuration, the magnetic head 10 can be freely rotated and the reproduction direction of the magnetic tape can be arbitrarily selected, and since the positions of the poles 30 and 35 are separated by a certain distance, stable rotation is possible. The rotation mechanism can be miniaturized. In particular, the rotation support mechanism has an extremely simple configuration and can be configured flat, making it more compact.Since it does not use conventional radial bearings, its configuration is simplified and manufacturing costs can be reduced. can.
以上説明したようにこの発明によれば、磁気ヘッドを極
めて簡単な構成によって反転可能に支持することができ
るとともに、その反転機構の小型化を図ることができ、
従来のようなラジアル軸受を用いないので安価に製造す
ることができる。As explained above, according to the present invention, the magnetic head can be reversibly supported with an extremely simple structure, and the reversing mechanism can be downsized.
Since it does not use a radial bearing like the conventional one, it can be manufactured at low cost.
（７）(7)
第１図はこの発明の磁気ヘッドの反転装置の実施例を示
す一部切欠側面図、第２図はこの発明の磁気ヘッドの反
転装置の実施例を示す一部切欠平面図である。
２・・・固定枠、８・・・可動枠、１０・・・磁気ヘッ
ド、１Ｂ・・・支持軸、２２・・・第１の回転支持面、
３０．３５・・・ボール、３４・・・第２の回転支持面
。
（８）
マ
１２７FIG. 1 is a partially cutaway side view showing an embodiment of a magnetic head reversing device of the present invention, and FIG. 2 is a partially cutaway plan view showing an embodiment of the magnetic head reversing device of the present invention. 2... Fixed frame, 8... Movable frame, 10... Magnetic head, 1B... Support shaft, 22... First rotation support surface,
30.35...Ball, 34...Second rotation support surface. (8) Ma127
Claims (1)
の支持軸を挿通させる透孔を形成するとともに、この透
孔の内壁面に第１の回転支持面を形成し、前記回転支持
部の外側部に臨む第２の回転支持面を前記可動枠に形成
し、前記第１の回転支持面と支持軸との間に複数のボー
ルを挿入するとともに、前記第２の回転支持面と回転支
持部との間に複数のボールを挿入し、磁気ヘッドを取付
けた可動枠を固定枠に前記各ボールを介し回動可能に支
持させたことを特徴とする磁気ヘッドの反転装置。A rotation support portion is formed in the fixed frame, a through hole is formed in the rotation support portion through which the support shaft of the movable frame is inserted, and a first rotation support surface is formed on the inner wall surface of the through hole, and the rotation support portion is formed with a first rotation support surface. A second rotational support surface facing the outer side of the part is formed on the movable frame, a plurality of balls are inserted between the first rotational support surface and the support shaft, and a plurality of balls are inserted between the first rotational support surface and the support shaft. 1. A magnetic head reversing device, characterized in that a plurality of balls are inserted between the rotating support section and a movable frame to which the magnetic head is attached, and the fixed frame rotatably supports the movable frame through the balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11996383A JPS6013321A (en) | 1983-06-30 | 1983-06-30 | Reversing device of magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11996383A JPS6013321A (en) | 1983-06-30 | 1983-06-30 | Reversing device of magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6013321A true JPS6013321A (en) | 1985-01-23 |
| JPH0377570B2 JPH0377570B2 (en) | 1991-12-11 |
Family
ID=14774530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11996383A Granted JPS6013321A (en) | 1983-06-30 | 1983-06-30 | Reversing device of magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6013321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63214910A (en) * | 1987-03-03 | 1988-09-07 | Tanashin Denki Co | Auto-reverse tape recorder |
| JPH01103012U (en) * | 1987-12-26 | 1989-07-12 |
-
1983
- 1983-06-30 JP JP11996383A patent/JPS6013321A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63214910A (en) * | 1987-03-03 | 1988-09-07 | Tanashin Denki Co | Auto-reverse tape recorder |
| JPH0447372B2 (en) * | 1987-03-03 | 1992-08-03 | Tanashin Denki Co | |
| JPH01103012U (en) * | 1987-12-26 | 1989-07-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0377570B2 (en) | 1991-12-11 |
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