JPH039175Y2 - - Google Patents

Description

【考案の詳細な説明】 産業上の利用分野 この考案は、記録媒体を磁気ヘツドに確実に押
し付けるための板バネパツド支持構造に関する。[Detailed Description of the Invention] Industrial Application Field This invention relates to a plate spring pad support structure for reliably pressing a recording medium against a magnetic head.

従来の技術 磁気デイスクを用いた磁気録音再生装置におい
て、磁気デイスクを磁気ヘツドに押し付ける必要
がある。実願昭58−50652号で提案された磁気記
録再生装置においては、板バネを利用した構造の
簡単な板バネパツドが使用されている。パツドを
取り付けられた板バネは、パツドホルダーをヘツ
ドブロツクに圧入することによりヘツドブロツク
に装着支持される。BACKGROUND OF THE INVENTION In a magnetic recording/reproducing device using a magnetic disk, it is necessary to press the magnetic disk against a magnetic head. In the magnetic recording/reproducing device proposed in Utility Model Application No. 58-50652, a plate spring pad with a simple structure using a plate spring is used. The leaf spring with the pad attached is mounted and supported on the headblock by press-fitting the pad holder into the headblock.

考案が解決しようとする問題点 板バネを使用したことにより、構成は簡単化さ
れが、パツドホルダーを必要とし、更にこれの圧
入作業も必要である。Problems to be Solved by the Invention Although the configuration is simplified by using a leaf spring, a pad holder is required, and further work to press fit the pad holder is required.

また、磁気ヘツドと磁気デイスクが相対的に移
動するとき、パツドとヘツドとが位置ずれを惹き
起してしまうという問題点がある。 Another problem is that when the magnetic head and the magnetic disk move relative to each other, the pad and the head may become misaligned.

問題点を解決するための手段 本考案は、簡単な支持構造でありながら、パツ
ドとヘツドとの位置ずれを防止した板バネパツド
支持構造であつて、自由端をパツド部とした長尺
状板バネにその基端を折曲部にて上記自由端に対
して略直角方向へ折曲したのち、これをＶ字状に
折り返した係合部を設け、上記係合部の折曲部近
傍に巾広の段付部を形成し、パツド支持体に上記
Ｖ字状の係合部は入るも上記段付部は入らない巾
を有する支持孔を形成し、この支持孔のパツド側
の側縁から略板バネの厚さに見合う距離だけ離れ
た位置であつて、上記段付部の背面に当接する受
け部を上記支持孔の両側に設けたことを特徴とす
る。Means for Solving the Problems The present invention is a flat spring pad support structure that prevents misalignment between the pad and the head while having a simple support structure. The proximal end is bent in a direction substantially perpendicular to the free end at the bent part, and then an engaging part is provided by folding this back into a V-shape, and a width is provided near the bent part of the engaging part. A wide stepped part is formed, and a support hole is formed in the pad support body with a width such that the V-shaped engaging part fits into it but the stepped part does not fit in, and from the side edge of this support hole on the pad side. The present invention is characterized in that receiving portions are provided on both sides of the support hole, the receiving portions being spaced apart by a distance corresponding to the thickness of the leaf spring and abutting against the back surface of the stepped portion.

作 用 段付部が係合する位置まで、係合部を支持孔に
嵌合するだけで、板バネパツドはパツド支持体に
支持される。Operation: The leaf spring pad is supported by the pad support simply by fitting the engaging portion into the support hole until the stepped portion engages.

板バネパツドは、磁気ヘツドとの間における位
置ずれを起す向きに揺動しようとしても、段付部
の背面が受け部に当接することによつて、揺動で
きない。 Even if the leaf spring pad attempts to swing in a direction that would cause a positional shift between it and the magnetic head, the back surface of the stepped portion abuts against the receiving portion, so that the leaf spring pad cannot swing.

実施例 以下、本考案を磁気録音再生装置に適用した一
実施例に基づいて詳細に説明する。Embodiment Hereinafter, the present invention will be described in detail based on an embodiment in which the present invention is applied to a magnetic recording and reproducing device.

第６図及び第７図において、符号１は磁気録音
再生装置のケースを示している。このケース１の
基板４にはデイスク５２を支持するハブ６が突出
する穴７、磁気ヘツドブロツク１０を嵌入させて
いて、互いに平行な側縁１１と基準面１２を有す
る開口部１３、磁気ヘツドブロツク１０のラツク
部１４が嵌入する凹部１５、ラツク部１４のラツ
ク１６に噛み合うピニオン１７が突出する穴１８
がそれぞれ形成されている。基板４の底面には、
ハブ６を回転すると共に磁気ヘツドブロツク１０
を進退させる図示しない全舞駆動手段が設けられ
ている。この手段は、全舞巻上げ紐２５を引つ張
ることにより巻き上げられ蓄勢される。 In FIGS. 6 and 7, reference numeral 1 indicates the case of the magnetic recording/reproducing device. The base plate 4 of the case 1 has a hole 7 through which the hub 6 for supporting the disk 52 protrudes, and a magnetic headblock 10 is fitted thereinto. A recess 15 into which the rack part 14 is fitted, and a hole 18 through which the pinion 17 that engages with the rack 16 of the rack part 14 projects.
are formed respectively. On the bottom of the board 4,
While rotating the hub 6, the magnetic headblock 10
A full-movement driving means (not shown) is provided for advancing and retracting. This means is wound up and energized by pulling the full winding string 25.

磁気ヘツドブロツク１０の構成を第１図乃至第
６図、第８図と第９図に基づいて説明する。磁気
ヘツドブロツク１０は、磁気ヘツド３６を嵌合さ
せて支持するヘツド支持穴３７と、消去ヘツド３
８を摺接自在に嵌合させる案内穴３９と形成され
たブロツク本体４０と、この本体から延び出させ
て形成されたラツク部１４とからなつている。ラ
ツク部１４には本体４０の上面に連続する段部４
１が形成されている。ラツク部１４には、基準面
２４（第６図参照）に当接させられる膨出した第
２摺接部４２が形成されている。 The structure of the magnetic headblock 10 will be explained based on FIGS. 1 to 6, FIGS. 8 and 9. The magnetic head block 10 has a head support hole 37 into which the magnetic head 36 is fitted and supported, and an erase head 3.
It consists of a block body 40 formed with a guide hole 39 into which the block 8 is slidably fitted, and a rack part 14 extending from this body. The rack portion 14 has a stepped portion 4 that is continuous to the top surface of the main body 40.
1 is formed. The rack part 14 is formed with a bulging second sliding contact part 42 which is brought into contact with the reference surface 24 (see FIG. 6).

ブロツク本体４０の一端には、弾性腕４３と基
板４の開口部１３の側縁１１に上方から摺接して
係合する係合段部４４が形成されている。ブロツ
ク本体４０の他端には、基準面１２に摺接係合す
る第１摺接部４５が形成されている。磁気ヘツド
ブロツク１０は、第６図に示すように、ブロツク
本体４０を開口部１３に、またラツク部１４を凹
部１５にそれぞれ位置させ、係合段部４４を側縁
１１に係合させると共に第１摺接部４５を基準面
１２に係合させておいて、弾性腕４３を側縁１１
に弾発的に係合させる。磁気ヘツドブロツク１０
は弾性腕４３の弾力によつて、第１・第２摺接部
４５，４２を基準面１２，２４に押し付けられ
て、一定の姿勢に保たれる。次いで、ブロツク保
持部材４６の係合端部４７をケース１の係止部４
８に係合させたのち、該部材を段部４１に嵌入さ
せて、固定ねじ４９を締付けると該ブロツクの浮
き上がりが防止される。これにより、磁気ヘツド
ブロツク１０は、ケース１に対して基準面１２，
２４に沿つて移動自在に装着されたことになる。
なお、第７図において、符号ｌ，Ｌは消去ヘツド
と磁気ヘツドの移動軌跡を示している。 An engaging stepped portion 44 is formed at one end of the block body 40 to slide and engage the elastic arm 43 and the side edge 11 of the opening 13 of the base plate 4 from above. A first sliding contact portion 45 is formed at the other end of the block body 40 and is slidably engaged with the reference surface 12. As shown in FIG. 6, the magnetic head block 10 is constructed by positioning the block main body 40 in the opening 13 and the rack part 14 in the recess 15, so that the engaging step part 44 is engaged with the side edge 11, and the first While the sliding contact portion 45 is engaged with the reference surface 12, the elastic arm 43 is attached to the side edge 11.
to elastically engage. Magnetic headblock 10
The first and second sliding contact portions 45 and 42 are pressed against the reference surfaces 12 and 24 by the elasticity of the elastic arm 43, and are maintained in a constant posture. Next, the engaging end 47 of the block holding member 46 is attached to the locking part 4 of the case 1.
8, the block is fitted into the stepped portion 41, and the fixing screw 49 is tightened to prevent the block from lifting up. As a result, the magnetic headblock 10 has a reference surface 12,
This means that it is attached so that it can move freely along 24.
In FIG. 7, symbols l and L indicate the movement loci of the erasing head and the magnetic head.

磁気ヘツドブロツク１０には、磁気デイスク５
２を磁気ヘツド３６に適宜の圧接力をもつて押圧
するための板バネパツド５４が支持されている。 The magnetic head block 10 includes a magnetic disk 5.
A leaf spring pad 54 is supported for pressing the magnetic head 2 against the magnetic head 36 with an appropriate pressing force.

板バネパツド支持構造を第１図乃至第５図、第
６図に基づいて説明する。ブロツク本体４０の一
端近傍には、支持孔５３が形成されている。板バ
ネパツド５４は、長尺状板バネ材からなつてい
て、自由端５５の磁気ヘツド３６に対向する位置
にフエルト等からなるパツド部材５６を固着され
ている。自由端５５の加工次第によつては、パツ
ド部材５６は設けなくてもよい。板バネパツド５
４は、折曲部５７にて自由端に対して直角よりや
や鋭角に折曲げたのち、Ｖ字状に折り返した係合
部５８を形成されている。係合部５８の巾Ｗ１
は、支持孔５３の巾Ｗ２と略等しく設定されてい
る。係合部５８の折曲部近傍には、一対の段付部
５９，５９が形成されている。この段付部５９，
５９の巾Ｗ３は、支持孔５３の巾Ｗ２よりも大き
い。支持孔５３の上端開口部の両側には、パツド
部側の側縁６０から板バネパツド５４の厚さｄ１
と略等しい距離ｄ２だけ離れた位置に受け部６
１，６１がそれぞれ設けられている。この受け部
６１，６１は、段付部５９，５９の高さと等しい
かやや大きく形成されている。 The leaf spring pad support structure will be explained based on FIGS. 1 to 5 and 6. A support hole 53 is formed near one end of the block body 40. The leaf spring pad 54 is made of a long leaf spring material, and has a pad member 56 made of felt or the like fixed to the free end 55 at a position facing the magnetic head 36. Depending on how the free end 55 is processed, the pad member 56 may not be provided. Leaf spring pad 5
4 is bent at a bending portion 57 at a slightly more acute angle than perpendicular to the free end, and then folded back into a V-shape to form an engaging portion 58. Width W1 of the engaging portion 58
is set approximately equal to the width W2 of the support hole 53. A pair of stepped portions 59, 59 are formed near the bent portion of the engaging portion 58. This stepped portion 59,
The width W3 of 59 is larger than the width W2 of the support hole 53. On both sides of the upper end opening of the support hole 53, there is a thickness d1 of the leaf spring pad 54 from the side edge 60 on the pad side.
The receiving portion 6 is located at a distance d2 that is approximately equal to
1 and 61 are provided, respectively. The receiving portions 61, 61 are formed to be equal to or slightly larger than the height of the stepped portions 59, 59.

支持孔５３の奥行よりも大きく拡開させられて
いる係合部５８を支持孔５３に挿入すると、第４
図及び第５図に示すように、その段付部５９，５
９が支持孔の両側縁部６２，６２に係合して、そ
の挿入を規制する。このとき、係合部の段付部５
９，５９に連続する部分は、受け部６１と側縁６
０との間に位置していて、段付部５９の背面を受
け部６１，６１に当接させている。すなわち、段
付部５９，５９によつてその挿入深さを規制され
た係合部５８は、受け部６１，６１が側縁６０か
らバネの板厚だけ離れた位置に存在することによ
つて、段付部の背面をこの受け部に当接させられ
る。換言すると、板バネパツド５４は、がたつき
なく支持孔５３に嵌合支持されたことになり、自
由端のパツド部は常に安定した押圧力で磁気デイ
スク５２を磁気ヘツド３６に押し付ける。 When the engaging portion 58, which is widened to a greater extent than the depth of the support hole 53, is inserted into the support hole 53, the fourth
As shown in FIG.
9 engages with both side edges 62, 62 of the support hole to restrict its insertion. At this time, the stepped portion 5 of the engaging portion
9 and 59 are the receiving part 61 and the side edge 6.
0, and the back surface of the stepped portion 59 is brought into contact with the receiving portions 61, 61. That is, the engagement portion 58 whose insertion depth is regulated by the stepped portions 59, 59 can be inserted into the engagement portion 58 due to the fact that the receiving portions 61, 61 are located at a distance from the side edge 60 by the thickness of the spring. , the back surface of the stepped portion is brought into contact with this receiving portion. In other words, the leaf spring pad 54 is fitted and supported in the support hole 53 without wobbling, and the pad portion at the free end always presses the magnetic disk 52 against the magnetic head 36 with a stable pressing force.

支持孔５３に嵌合させられた状態の板バネパツ
ド５４を矢示方向（第３図において）へ揺動させ
ようとしても、段付部５９の背面が受け部６１で
バツクアツプされていることにより、揺動できな
いが、受け部６１が存在しないと仮定すると、係
合部５８は容易に撓まされてしまう。なお、支持
孔５３の内側面に、第４図に鎖線５３Ａで示すよ
うに、係合部５８の端部が係合する段部を形成す
れば、板バネパツドの抜脱防止に効果的である。 Even if an attempt is made to swing the leaf spring pad 54 fitted into the support hole 53 in the direction of the arrow (in FIG. 3), since the back surface of the stepped portion 59 is backed up by the receiving portion 61, Although it cannot swing, assuming that the receiving part 61 does not exist, the engaging part 58 will be easily bent. Note that if a stepped portion is formed on the inner surface of the support hole 53, as shown by the chain line 53A in FIG. 4, with which the end of the engaging portion 58 engages, it is effective to prevent the leaf spring pad from slipping out. .

考案の効果 以上のように、本考案の板バネパツド支持構造
によれば、折曲した基端をパツド支持体としての
ヘツドブロツクに差し込むだけでよく、部品点数
が少なくとも１つでよい。段付部と受け部との当
接によつて、板バネパツドと磁気ヘツドとの位置
ずれ発生方向の揺動が防止されるから、位置ずれ
が生じない。更に、これに加えて、Ｌ字状に折り
曲げたことにより、確実なパツド圧が得られる。
また、磁気ヘツド部分でパツドを押し上げる力が
生じたとしても、受け部がこの力を受けるので、
パツドの変位やずれが生じず、確実で安定した板
バネパツドの支持がなされる。Effects of the Invention As described above, according to the leaf spring pad support structure of the present invention, it is only necessary to insert the bent base end into the head block as a pad support, and the number of parts is at least one. The contact between the stepped portion and the receiving portion prevents the leaf spring pad and the magnetic head from swinging in the direction in which the positional deviation occurs, so that no positional deviation occurs. Furthermore, in addition to this, since the pad is bent into an L shape, reliable pad pressure can be obtained.
Also, even if a force is generated in the magnetic head part to push up the pad, the receiving part receives this force, so
The plate spring pad is supported reliably and stably without displacement or slippage of the pad.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の板バネパツド支持構造の要部
を示す分解斜視図、第２図は板バネパツドとヘツ
ドブロツクを示す側面図、第３図は同上の平面
図、第４図は板バネパツドをヘツドブロツクに装
着したときの第３図中のＣ−Ｃ線断面図、第５図
は第３図中のＤ−Ｄ線断面図、第６図は第７図か
ら磁気デイスクを取り除いた状態を示す平面図、
第７図は本考案を適用した磁気録音再生装置の一
例を示す平面図、第８図は板バネパツド支持構造
を装着されたヘツドブロツクの右側面図、第９図
はヘツドブロツクの平面図である。 １０……パツド支持体としての磁気ヘツドブロ
ツク、５３……支持孔、５４……長尺状板バネパ
ツド、５５……自由端、５７……折曲部、５８…
…係合部、５９……段付部、６０……側縁、６１
……受け部。 Fig. 1 is an exploded perspective view showing the main parts of the leaf spring pad support structure of the present invention, Fig. 2 is a side view showing the leaf spring pad and head block, Fig. 3 is a plan view of the same, and Fig. 4 shows the leaf spring pad as a head block. 3 is a cross-sectional view taken along the line C-C in FIG. 3, FIG. 5 is a cross-sectional view taken along the line D-D in FIG. 3, and FIG. 6 is a plan view showing the state in which the magnetic disk is removed from FIG. figure,
FIG. 7 is a plan view showing an example of a magnetic recording and reproducing apparatus to which the present invention is applied, FIG. 8 is a right side view of a headblock equipped with a leaf spring pad support structure, and FIG. 9 is a plan view of the headblock. DESCRIPTION OF SYMBOLS 10...Magnetic head block as a pad support, 53...Support hole, 54...Elongate plate spring pad, 55...Free end, 57...Bend portion, 58...
...Engaging part, 59...Stepped part, 60...Side edge, 61
...Reception part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 自由端をパツド部とした長尺状板バネにその基
端を折曲部にて上記自由端に対して略直角方向へ
折曲したのち、これをＶ字状に折り返した係合部
を設け、上記係合部の折曲部近傍に巾広の段付部
を形成し、パツド支持体に上記Ｖ字状の係合部は
入るも上記段付部は入らない巾を有する支持孔を
形成し、この支持孔のパツド側の側縁から略板バ
ネの厚さに見合う距離だけ離れた位置であつて、
上記段付部の背面に当接する受け部を上記支持孔
の両側に設けたことを特徴とする板バネパツド支
持構造。 An elongated leaf spring having a pad portion at its free end is provided with an engaging portion whose proximal end is bent at a bending portion in a direction substantially perpendicular to the free end and then folded back into a V-shape. , a wide stepped portion is formed near the bent portion of the engaging portion, and a support hole having a width in which the V-shaped engaging portion fits into the pad support but does not allow the stepped portion to enter is formed in the pad support. However, it is located at a distance corresponding to the thickness of the leaf spring from the side edge of the support hole on the pad side,
A plate spring pad support structure characterized in that receiving portions that come into contact with the back surface of the stepped portion are provided on both sides of the support hole.