JPS6396720A - Magnetic head supporting device - Google Patents
Magnetic head supporting deviceInfo
- Publication number
- JPS6396720A JPS6396720A JP24362386A JP24362386A JPS6396720A JP S6396720 A JPS6396720 A JP S6396720A JP 24362386 A JP24362386 A JP 24362386A JP 24362386 A JP24362386 A JP 24362386A JP S6396720 A JPS6396720 A JP S6396720A
- Authority
- JP
- Japan
- Prior art keywords
- spring
- coil
- head
- magnetic head
- magnetic
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 52
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 5
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は例えばビデオ・テープ・レコーダ（以下ＶＴ
Ｒと略記）に関し、特にＶＴＲの再生画質を改善するた
めにビデオのヘッドを磁気テープの幅方向に移動可能に
回転ドラムに装着する装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] This invention is applicable to, for example, a video tape recorder (hereinafter referred to as VT).
In particular, the present invention relates to a device in which a video head is mounted on a rotating drum so as to be movable in the width direction of a magnetic tape in order to improve the quality of reproduced images of a VTR.
第４図は従来の磁気ヘッド担持装置を示Ｔ斜視図であり
、図において、（４）は実質的に剛性の板からなるヘッ
ド台、（５）はヘッド台（４）の先端に固着して担持さ
ｎたヘッドである。かかる磁気ヘッド担持装置は第５図
に示す如く回転ドラム装置の回転するドラムにネジ等に
より固定して取り付けられる。FIG. 4 is a perspective view of a conventional magnetic head holding device. In the figure, (4) is a head stand made of a substantially rigid plate, and (5) is a head stand that is fixed to the tip of the head stand (4). It is a head that is carried by a person. Such a magnetic head carrying device is fixedly attached to a rotating drum of a rotating drum device with screws or the like, as shown in FIG.
第５図は第４図に示した従来の磁気ヘッド担持装置を備
えた回転ドラム装置を示す断面寵であり、図において、
（１月；磁気テープ、（２）は固定の下ドラム、（３）
は回転する上ドラム、（４）は上ドラム（３）に脱着自
在にネジ止めさｎたヘッド台、（５）はヘッド台（４）
の先端に固着さｎたヘッドである０
ヘッド（５目マ上ドラム（３）に対して固定した位置に
あり、その先端は上ドラム（３）の外円より少し突出し
ている。上ドラム（３）は一定の高速度で回転せしめら
ｎる。力）かる上ドラム（３）と下ドラム（２）との外
周面に磁気テープ（１）がやや斜めに巻き付けらｎて所
定の速度で走行する。かくしてヘッド（５）は磁気テー
プ（１］に接触して磁気的に映像（または音声）信号な
記録または再生する。FIG. 5 is a cross-sectional view showing the rotary drum device equipped with the conventional magnetic head holding device shown in FIG.
(January; magnetic tape, (2) fixed lower drum, (3)
is a rotating upper drum, (4) is a head stand that is removably screwed to the upper drum (3), and (5) is a head stand (4).
The 0 head (5th head) is a head fixed to the tip of the upper drum (3), and its tip protrudes slightly from the outer circle of the upper drum (3). 3) is rotated at a constant high speed.The magnetic tape (1) is wound slightly diagonally around the outer circumferential surfaces of the upper drum (3) and lower drum (2) and rotated at a predetermined speed. Run. Thus, the head (5) contacts the magnetic tape (1) to magnetically record or reproduce video (or audio) signals.
磁気テープ（１）の走行とヘッド（５）の回転によりヘ
ッド（５）は磁気テープ（１）を斜めに横切る。これら
横切り線は相互に平行になっている。第６図はこのこと
を詳細に説明するための図である。By running the magnetic tape (1) and rotating the head (5), the head (5) diagonally crosses the magnetic tape (1). These transverse lines are parallel to each other. FIG. 6 is a diagram for explaining this in detail.
図において、（１＆）は磁気テープ（１）の軌跡、（ｖ
ｌ）は磁気テープ（υの通常の送り速度、（５ａ）はヘ
ッド（５］の軌跡、（ｖｏ）はヘッド（５）の回転速度
である。軌跡（１ａ）と軌跡（５ａ）とは図示の如く交
差している。かくしてヘッド（５）により磁気テープ（
１］に画かｎる相対的軌跡（前記横切り線］は第６図（
ａ）に示す如くＡとなる。ところで、磁気テープ（１）
の送り速度がｖｌからＶ！の如く増大せしめらｎる（例
えば早や送り操作時）と、磁気テープ（υに対するヘッ
ド（５）の相対的軌跡は第６図（ｂ）に示す如くＢとな
る。この場合ヘッド（５）は通常時の相対的軌跡（Ａ）
丁なわち記録跡ご正確に追跡せず、はずｎるようになる
。はずｎで来るとヘッド（５）が拾う信号レベルは低く
なり、鮮明な再生画像を得ることが困難になりノイズが
発生している。In the figure, (1&) is the trajectory of the magnetic tape (1), (v
l) is the normal feed speed of the magnetic tape (υ), (5a) is the trajectory of the head (5), and (vo) is the rotational speed of the head (5). Locus (1a) and trajectory (5a) are not shown. Thus, the head (5) crosses the magnetic tape (
1] The relative locus (the above-mentioned crossing line) drawn in Figure 6 (
It becomes A as shown in a). By the way, magnetic tape (1)
The feed rate is from vl to V! When the magnetic tape (υ) is increased as shown in FIG. is the relative trajectory under normal conditions (A)
In other words, the records will not be tracked accurately and will be lost. When the signal level is n, the signal level picked up by the head (5) becomes low, making it difficult to obtain a clear reproduced image and causing noise.
このため、通常時の送り速度（ｉ）（／Ｊ下で記録した
磁気テープ上の記録跡丁なわち相対的軌跡（Ａ）に対し
て、再生時の磁気テープの送り速度を任意に変化させた
場合でも、ヘッド（５）か前記記録跡を正確に追跡Ｔる
ようにヘッド（５）がテープ幅方向（Ｔｌに可動である
ようにするとよい。For this reason, the feeding speed of the magnetic tape during playback can be arbitrarily changed with respect to the recording trace on the magnetic tape recorded under the normal feeding speed (i) (/J, that is, the relative trajectory (A)). Even in such a case, it is preferable that the head (5) is movable in the tape width direction (Tl) so that the head (5) can accurately track the recording trace T.
ヘッド（５）がテープ幅方向（Ｔ）に可動であるように
上ドラム（３）に装着さｎていると、何らかの動作装置
でヘッド（５）のテープ幅方向の移動を制御してやｎば
、相対的軌跡（Ｃ）にすることが出来る。If the head (5) is mounted on the upper drum (3) so as to be movable in the tape width direction (T), the movement of the head (5) in the tape width direction is controlled by some operating device. It can be a relative trajectory (C).
ところが、従来の磁気ヘッド担持装置は回転ドラムにヘ
ッド（５）を固定した形で単に取り付けているため、磁
気テープの記録跡を、テープ速度の不安定や変速再生な
どに対しても十分な精度でヘッド（５）がなぞｎうるよ
うにはなしえないのである。However, since conventional magnetic head holding devices simply attach the head (5) in a fixed manner to a rotating drum, recording traces on the magnetic tape can be recorded with sufficient accuracy even in the case of unstable tape speed or variable speed playback. Therefore, the head (5) cannot perform the riddle.
この発明は上記のような問題点を解消するためになされ
たもので、ヘッドがテープ幅方向に移動できるようにな
した磁気ヘッド相持装置を得ることを目的とし、かつ加
工など生産性が良く、取付、組立の容易な磁気ヘッド担
持装置を得ることを目的とする。This invention was made to solve the above-mentioned problems, and aims to provide a magnetic head support device that allows the head to move in the width direction of the tape, has good productivity in terms of processing, etc. The object of the present invention is to obtain a magnetic head holding device that is easy to install and assemble.
この発明に係る磁気ヘッド担持装＠は、上下に２枚の平
行なバネ部材を有する平行四辺形の機構を具備せしめ、
かつそのバネ部材を左右一対のコの字形バネ腕とこｎら
に挾まｎてその腕部に連結さｎたバネ支持部とコイル取
付部とがら形成し、コイル取付部に平行支持部としてコ
イル（またはそのボビン）を直結したものであるＯ
〔作用〕
この発明における磁気ヘッド担持装置は、バネ部材を有
する平行四辺形の機構の故にヘッドを傾けることなく上
下に移動させることが出来る。また、コイル取付部にコ
イルを直結した一体構造となっているので、バネ中心と
磁気中心を合わせやすくかつ軽くて強くしかも回転ドラ
ムの軸方向には変形しや丁く同局方向には変形し難いも
のを板部材から容易に作ることが出来る。特にコの字形
バネ腕ご左右一対に配置して合成動作するバネ部材とな
しているため磁気ヘッド担持装置ｎ全体を小形に作るこ
とが出来る。The magnetic head holding device according to the present invention is equipped with a parallelogram-shaped mechanism having two parallel spring members on the upper and lower sides,
The spring member is sandwiched between a pair of left and right U-shaped spring arms, and a spring support part and a coil attachment part are connected to the arms. or its bobbin). [Operation] The magnetic head supporting device according to the present invention can move the head up and down without tilting it because of the parallelogram-shaped mechanism having a spring member. In addition, since it has an integrated structure in which the coil is directly connected to the coil mounting part, it is easy to align the spring center and the magnetic center, and it is light and strong, and it does not deform in the axial direction of the rotating drum, but is difficult to deform in the same direction. You can easily make things from plate parts. In particular, since the U-shaped spring arms are arranged on a pair of left and right sides to form a spring member that operates synthetically, the entire magnetic head carrying device n can be made compact.
以下この発明の一実施例を図について説明する。第１図
（ＩＬ）乃至第１図（０）において、（１０）は磁気ヘ
ッド担持装置、（１１）、（１２）は上下に平行に配置
したバネ部材、（ｌｌａ）。An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 (IL) to FIG. 1 (0), (10) is a magnetic head carrying device, (11) and (12) are spring members arranged vertically in parallel, and (lla).
（１２ａ）は左右に一対のフ（／、Ｊ字形バネ腕、（１
３）は磁気ヘッド担持装置ご上下に駆動するための円筒
コイル、（１４）はコイル（１３）を巻付けるボヒ゛ン
、（１５）はコイル（１３ンに反作用の円形磁場を与え
るために永久磁石および強磁性体よりなる磁気発生器、
（１１Ｃ）はヘッド取付部、（ｌｘｂ）、（１２’ｂ）
はボビン（１４）を固定するためのコイル取付部である
。このコイル取付部（ｌｌｂ ）、（１２ｂ）はヘッド
取付部（ｌｌｃ）と共にヘッド（５）を平行に保ちなが
ら上下に移動する。（１１（Ｌ）。(12a) has a pair of flaps on the left and right (/, J-shaped spring arms, (1
3) is a cylindrical coil for driving the magnetic head support device up and down, (14) is a bow around which the coil (13) is wound, and (15) is a coil (with a permanent magnet and A magnetic generator made of ferromagnetic material,
(11C) is the head mounting part, (lxb), (12'b)
is a coil attachment part for fixing the bobbin (14). The coil attachment parts (llb) and (12b) move up and down together with the head attachment part (llc) while keeping the head (5) parallel. (11(L).
（１２（Ｌ）はバネ部材（１１）、（１２）の支点とな
るバネ支持部である。バネ支持部（ｌｌｄ）。(12(L) is a spring support part that serves as a fulcrum for the spring members (11) and (12). Spring support part (lld).
（１２（Ｌ）は間隔板（１６）を挾み穴（１１θ）。(12(L) is a hole (11θ) inserted through the spacer plate (16).
（１２ｅ）を介してネジ（１８）により磁気発生器（１
５）に取付けられる。磁気発生器（１５）は回転ドラム
（３）にネジ（１７）により取付けら０る。（ｌｌｆ）
、（１２ｆ）Ｇ’！位置決メｃｔＪ’ｒ：めの回り止め
穴である。Magnetic generator (1) by screw (18) via (12e)
5) Attached to. The magnetic generator (15) is attached to the rotating drum (3) by screws (17). (llf)
, (12f) G'! Positioning mechanism ctJ'r: This is a counterclockwise locking hole.
第２図￥参１［Ａシて、コイル（１３）に通電すること
により動作カヤ）をコイル（ｌｌｂ）。Figure 2 Reference 1: The coil (llb) is activated by energizing the coil (13).
（１２ｂ）に加えると、フの字形バネ腕（ｌｌａ） 。In addition to (12b), there is a fold-back spring arm (lla).
（１２ａ）の腕部（イ）、（ハ）はねじり変形し、中央
部（ロ）は両持ち梁式の曲げ変形をし、その結果バネ部
材（１１）、（１２）は同量変形し、平行四辺形（＋１
１１ ｚｌ−ｍｌ Ｌｍ ）から平行四辺形（ｍａ
−２ｓ ｍａ Ａｘ ）に変化する。なお、辺Ｊ。The arms (a) and (c) of (12a) are torsionally deformed, and the central part (b) is bent like a double-supported beam, and as a result, the spring members (11) and (12) are deformed by the same amount. , parallelogram (+1
11 zl-ml Lm ) to parallelogram (ma
−2s ma Ax ). In addition, side J.
ｍｚ 、 ｍ３ 、 ｍａは長さは実質的に等しいが、
ｍｌとｍｚとか平行でありｍ３とｍφとが平行である。Although mz, m3, and ma are substantially equal in length,
ml and mz are parallel, and m3 and mφ are parallel.
辺Ｌｒ 、 Ｌｘ 、 Ａｓは平行でかつ長さが等しい
。かくしてヘッド取付Ｂ （１１ｏ ）は傾むくことな
く平行移動しヘッド（５）を磁気テープ（１）の幅方向
（Ｔ）に動か丁ことが出来る。The sides Lr, Lx, and As are parallel and have the same length. In this way, the head mounting B (11o) can be moved in parallel without being tilted, and the head (5) can be moved in the width direction (T) of the magnetic tape (1).
このように、磁気ヘッド（５）とバネ支持部とＣ１１（
１）を結ぶ線方向に実質的に平行な両持ち梁式のたわみ
バネ（ロ）およびこれに直角なねじりバネ（イ）、（ロ
）？有して合成動作をするバネ部材となしているために
、たわみバネのみからなるバネ部材に較べ前記線方向の
寸法を短くすることが出来るのである。また、前記線に
対称的に一対のコの字形バネ腕を設けているためにヘッ
ド（５）がバネ支持部に対して傾くことなく平行に移動
するのである。更に一対のコの字形バネ腕の内側にバネ
支持部とコイル取付部とご配置することが出来るために
本発明の磁気ヘッド担持装置全体な小形になしつるので
ある。小形であっても回転方向力（Ｒ）に対して、（強
度）α（曲げ方同寸法戸×（曲げと直角方向の寸法）の
関係から、コの字形バネ腕の中央部（ロ）の平面幅に決
定されて（Ｒ）方向のそりを防止出来、動作力（Ｅ’）
に対しては敏感な動きをな丁のである。In this way, the magnetic head (5), the spring support part and C11 (
1) A double-supported beam-type flexible spring (b) substantially parallel to the line connecting 1), and torsion springs (a) and (b) perpendicular to this? Since it is a spring member that performs a synthetic action, the dimension in the linear direction can be made shorter than that of a spring member that is made only of a deflection spring. Furthermore, since the pair of U-shaped spring arms are provided symmetrically to the line, the head (5) moves parallel to the spring support without being inclined. Furthermore, since the spring support section and the coil mounting section can be arranged inside the pair of U-shaped spring arms, the entire magnetic head supporting device of the present invention can be made compact. Even if it is small, the center part (B) of the U-shaped spring arm is strong against the rotational force (R) due to the relationship of (strength) α (same dimension in bending direction x (dimension in the direction perpendicular to the bending direction)). It is possible to prevent warping in the (R) direction by determining the plane width, and the operating force (E')
It is sensitive to movement.
第１図（ｂ）および（ｃ）で示した本発明のバネ部材で
は、コの字形バネ腕（ｌｌａ）、（１２ａ）とコイル取
付部（ｌｌｂ）、（１２ｂ）の接続部を結ぶ線はコイル
取付部の中心（Ｐ）を通っている。まｔ第１図（Ｑ）は
ヘッド取付部の一部を除くバネ部材全体が円形（Ｓ）に
収まるように一対のコの字形バネ腕を先すぼまりに形成
配置させ、一般に円形に作らｎる磁気発生器（１５）と
マツチさせるようにしていることも示している。In the spring member of the present invention shown in FIGS. 1(b) and (c), the line connecting the U-shaped spring arm (lla), (12a) and the connection portion of the coil attachment portion (llb), (12b) is It passes through the center (P) of the coil attachment part. Also, in Fig. 1 (Q), a pair of U-shaped spring arms are formed and arranged so that the entire spring member excluding a part of the head attachment part fits in a circle (S), and is generally made in a circle. It also shows that it is matched with the magnetic generator (15).
なお、第１図（ｂ）および（０）において示す一実施例
のバネ部材では、コの字形バネ腕（１１ａ Ｌ（１２ａ
）の腕部（イ）かコイル取付部（１ｌ ｂ ）。In addition, in the spring member of the embodiment shown in FIGS. 1(b) and 1(0), the U-shaped spring arms (11a L(12a
) arm part (a) or coil attachment part (1l b ).
（１２ｂ）の中心ＣＰ）に向かうよに設けているが、コ
の字形バネ腕（ｌｌａ）、（１２ｍ）の腕部（イ）とコ
イル取付部（ｌｌｂ）、（１２ｂ）との接続部（ＱＪ
ｅ結ぶ線はコイル取付部の中心（Ｐ）以外を通っていて
もよい。しかしボビン（１４）が平行支持部として機能
しヘッド取付Ｎ（ｌｌｏ）を平行移動させつるには少な
くともコイル直径円内で少し中心ＣＰ）寄りであわばよ
い。第３図はその一例を示し、コの字形バネ腕（ｌｌａ
）。(12b), the connection part between the U-shaped spring arm (lla), the arm part (a) of (12m) and the coil attachment part (llb), (12b) ( Q.J.
eThe connecting wire may pass through a place other than the center (P) of the coil attachment part. However, it is sufficient that the bobbin (14) functions as a parallel support part and moves the head mounting N(llo) in parallel, so that the head attachment N(llo) is moved at least a little closer to the center CP within the coil diameter circle. Figure 3 shows an example of this, with a U-shaped spring arm (lla
).
（１２ａ）の腕部（イ）とコイル取付部（ｌｌｂ）。(12a) arm part (a) and coil attachment part (llb).
（１２ｂ）との接続部（りを結ぶ線はコイル取付部（ｌ
ｌｂ）、（１２ｂ）の中心（Ｐ）に対してヘッド取付部
（ｌｌｏ ）寄りにある。しＸ））Ｌ、コイル内を通っ
ている。また図とは逆に接続部（ＱＪをバネ支持部寄り
に設けてもよい。同じ板幅、板厚ならば、前者はやわら
かいバネとなり、後者は硬いバネとなることは明らかで
ある。(12b) The wire connecting the connection part (12b) is the coil attachment part (12b).
lb), (12b) is located closer to the head mounting portion (llo) with respect to the center (P). X))L, passing through the coil. Also, contrary to the diagram, the connection part (QJ) may be provided closer to the spring support part.It is clear that if the plate width and thickness are the same, the former will be a soft spring and the latter will be a hard spring.
第１図（ｂ）Ｉ （（１）および第３図では一対のコの
字形バネ腕の中央部（Ｒ）が台形を示すように先細とな
さｎているが、平行になしてもよい。1(b) I (In (1) and FIG. 3, the central portions (R) of the pair of U-shaped spring arms are tapered to show a trapezoid, but they may be parallel.
バネ支持部（ｌｌｄ）、（ｉ２ｄ）は、磁気発生器（１
５）を介して回転ドラム（３ンに装着さｎているもの３
示したが、直接回転ドラム（３）に取付けてもよい。The spring support part (lld), (i2d) is connected to the magnetic generator (1
5) The one that is attached to the rotating drum (3) through the
Although shown, it may also be attached directly to the rotating drum (3).
位置決めとして穴（ｌｌｆ）、（１２ｒ）？設けたが、
切欠きでも、外Ｉ聞嵌合でもよい。Hole (llf), (12r) for positioning? I set it up, but
It may be a notch or an external I-fitting.
コの字形バネ腕（ｌｌａ）、（１２ａ）とコイル取付部
（ｌｌｂ）、（１２ｂ）とバネ支持部（ｌｌａ）、（１
２ａ）は同じ材質で一体的であるものを示したが、別部
材を貼合せて形成してもよい。U-shaped spring arm (lla), (12a), coil mounting part (llb), (12b), spring support part (lla), (1
Although 2a) shows an integral structure made of the same material, it may also be formed by bonding separate members.
バネ部材（１１）、（１２）は一定間隔をあけてならべ
たものを示したが、平行であわばコイル（１３）に対し
て任意の位置でよく、例えばコイル（１３）’Ｅ−はさ
むように（第１図（ａ）において１２１で示Ｔ如＜）シ
てスペースの有効利用を行ないつる。またバネ部材（１
１） 、（１２）共に磁気発生器内に収納してもよい。Although the spring members (11) and (12) are shown arranged at regular intervals, they may be parallel to each other and may be placed at any position relative to the coil (13), for example, in a manner such that they are sandwiched between the coil (13)'E- (as indicated by 121 in FIG. 1(a)) to make effective use of space. Also, the spring member (1
1) and (12) may both be housed within the magnetic generator.
以上のように、この発明によれば２枚のバネ部材（１１
）、（１２）を平行に配置して磁気ヘッド（５） Ｔｒ
：テープ幅方向（’Ｉ’）に平行移動させるのであるが
、その各バネ部材を一対のコの字形バネ腕で構成して、
この一対のコの字形バネ腕の間にバネ支持部とコイル取
付部とを設けたものになしているので、磁気ヘッド担持
装置を小形で精度が高くかつ安価になしつるという効果
がある。As described above, according to the present invention, two spring members (11
), (12) are arranged in parallel to form a magnetic head (5) Tr.
:The tape is moved in parallel in the width direction ('I'), and each spring member is composed of a pair of U-shaped spring arms.
Since the spring support portion and the coil attachment portion are provided between the pair of U-shaped spring arms, the magnetic head carrying device can be made compact, highly accurate, and inexpensively.
第１図（ＩＬ）はこの発明の一実施例による磁気ヘッド
担持装置を示Ｔ断面図、第１図（ｂ）はその平行なバネ
部材の一方を示す平面図、第１図（０）は他方のバネ部
材を示す平面図、第２図は本発明の動作３示す原理を説
明するための斜視図、第３図は他の実施例のバネ部材を
示す平面図、第４図は従来の磁気ヘッド担持装置を示す
斜視図、第５図は従来の回転ドラム装置を示す断面図、
第６図（ｅＪ〜（Ｃ）は磁気テープパターンを示Ｔ説明
図である。
図において、（３）は回転するドラム、（５）は磁気ヘ
ッド、（ｌｌａ）−（１２ａ）はコの字形バネ腕、（ｌ
ｌｂ）、（１２ｂ）はコイル取付部、（ｌｉｄ）、（１
２４）はバネ支持部、（１４）はボビンである。
なお、各図中同一符号は同一または相当部分な示す。
代理人 弁理士 大 岩 増 雄第１図
第２図
第３図FIG. 1 (IL) is a T cross-sectional view showing a magnetic head carrying device according to an embodiment of the present invention, FIG. 1 (b) is a plan view showing one of the parallel spring members, and FIG. 1 (0) is a FIG. 2 is a perspective view for explaining the principle of operation 3 of the present invention, FIG. 3 is a plan view showing the spring member of another embodiment, and FIG. 4 is a plan view of the conventional spring member. FIG. 5 is a perspective view showing a magnetic head holding device; FIG. 5 is a sectional view showing a conventional rotating drum device;
Figure 6 (eJ to (C) is an explanatory diagram showing the magnetic tape pattern. In the figure, (3) is a rotating drum, (5) is a magnetic head, and (lla) to (12a) are U-shaped. Spring arm, (l
lb), (12b) are coil mounting parts, (lid), (1
24) is a spring support part, and (14) is a bobbin. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent: Masuo Oiwa, Patent Attorney Figure 1 Figure 2 Figure 3
Claims (6)
ら挾むようにして連結する左右一対のコの字形バネ腕と
からなり、コイル取付部は移動自在になされバネ支持部
は固定される、非磁性体のバネ部材を２枚具備し、磁気
発生器に対して作用する円筒コイルを具備し、バネ部材
の一方にはバネ支持部とは反対の方向にコイル取付部か
ら延ばしたヘッド取付部を設け、他方のバネ部材にはヘ
ッド取付部を設けず、一対のバネ部材が一定間隔になる
ように円筒コイルが巻き付けられているボビンの延長部
を平行支持部としてコイル取付部に固定しかつバネ支持
部には間隔板を配置して一対のバネ部材が重なる位置関
係に固定して平行四辺形構造となし、コの字形バネ腕の
両腕部がねじりバネとして作動し、コの字形バネ腕の中
央部が両持ち梁式のたわみバネとして作動するようにな
し、円筒コイルが磁気発生器の円形ギャップ内で可動で
あるように前記バネ支持部を回転ドラムに装着すること
を特徴とする磁気ヘッド担持装置。(1) Consisting of a coil mounting part, a spring support part, and a pair of left and right U-shaped spring arms that connect these parts from both sides, the coil mounting part is movable and the spring support part is fixed, non-magnetic. The device includes two body spring members, a cylindrical coil that acts on the magnetic generator, and one of the spring members has a head mounting portion extending from the coil mounting portion in a direction opposite to the spring support portion. , the other spring member does not have a head attachment part, and the pair of spring members is fixed to the coil attachment part as a parallel support part using an extension of the bobbin around which the cylindrical coil is wound so that the pair of spring members are spaced at a constant interval, and the spring support is A spacer plate is arranged in the section and the pair of spring members are fixed in an overlapping positional relationship to form a parallelogram structure, and both arms of the U-shaped spring arm act as torsion springs, A magnetic head characterized in that the spring support part is mounted on a rotating drum so that the central part operates as a double-sided beam-type flexible spring, and the cylindrical coil is movable within a circular gap of a magnetic generator. Carrying device.
内に収まるように一対のコの字形バネ腕は先すぼまりに
形成配置した特許請求の範囲第１項記載の磁気ヘッド担
持装置。(2) The magnetic head carrier according to claim 1, wherein the pair of U-shaped spring arms are tapered so that the entire spring member excluding a part of the head mounting portion is contained within a circle. Device.
線はコイル取付部の中心を通るようになした特許請求の
範囲第１項記載の磁気ヘッド担持装置。(3) The magnetic head supporting device according to claim 1, wherein the line connecting the connection portion between the coil attachment portion and the U-shaped spring arm passes through the center of the coil attachment portion.
許請求の範囲第１項記載の磁気ヘッド担持装置。(4) The magnetic head supporting device according to claim 1, wherein the spring support portion is provided with a fitting portion for preventing rotation.
むように配置した特許請求の範囲第１項記載の磁気ヘッ
ド担持装置。(5) The magnetic head supporting device according to claim 1, wherein the coil mounting portions of the two spring members are arranged to sandwich the cylindrical coil.
びヘッド取付部を同一部材より構成した特許請求の範囲
第１項記載の磁気ヘッド担持装置。(6) The magnetic head supporting device according to claim 1, wherein the coil attachment portion, the spring support portion, the U-shaped spring arm, and the head attachment portion are made of the same member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24362386A JPS6396720A (en) | 1986-10-13 | 1986-10-13 | Magnetic head supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24362386A JPS6396720A (en) | 1986-10-13 | 1986-10-13 | Magnetic head supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6396720A true JPS6396720A (en) | 1988-04-27 |
Family
ID=17106577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24362386A Pending JPS6396720A (en) | 1986-10-13 | 1986-10-13 | Magnetic head supporting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6396720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01302588A (en) * | 1988-05-31 | 1989-12-06 | Mitsubishi Electric Corp | Magnetic head driving device |
-
1986
- 1986-10-13 JP JP24362386A patent/JPS6396720A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01302588A (en) * | 1988-05-31 | 1989-12-06 | Mitsubishi Electric Corp | Magnetic head driving device |
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