JPS59227025A - Magnetic head adjusting mechanism - Google Patents

Magnetic head adjusting mechanism

Info

Publication number
JPS59227025A
JPS59227025A JP9936483A JP9936483A JPS59227025A JP S59227025 A JPS59227025 A JP S59227025A JP 9936483 A JP9936483 A JP 9936483A JP 9936483 A JP9936483 A JP 9936483A JP S59227025 A JPS59227025 A JP S59227025A
Authority
JP
Japan
Prior art keywords
magnetic head
rotating member
axial force
rotating
guide hole
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
Application number
JP9936483A
Other languages
Japanese (ja)
Other versions
JPH0150966B2 (en
Inventor
Takeo Nagayama
永山　剛生
Masashi Yoshida
雅志 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9936483A priority Critical patent/JPS59227025A/en
Publication of JPS59227025A publication Critical patent/JPS59227025A/en
Publication of JPH0150966B2 publication Critical patent/JPH0150966B2/ja
Granted legal-status Critical Current

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
    • G11B5/56—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 support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To adjust a magnetic head to an optimum position, and also to fix it to its position by constituting so that gaps between a supporting shaft of a rotating member of the magnetic head and an adjusting screw, and between the adjusting screw and the rotating member become zero, respectively. CONSTITUTION:A rotating member 2 on which a magnetic head 3 is loaded is attached so as to be rotatable to a supporting shaft 4 provided vertically on a substrate 11, and a spring 2a is inserted between the substrate 11 and the rotating member 2 and presses the rotating member 2 in the upper direction. On the other hand, by a screw part provided on the supporting shaft 4, and an adjusting screw 1, its axial force is controlled. Therefore, a height to the substrate 11 of the rotating member 2 can be adjusted by the adjusting screw 1. Also, a shape of a rotating guide hole 2c of the rotating member 2 is formed so that the section becomes a tapered shape, and also an engaging part of the adjusting screw 1 is formed in a conical shape which is fitted to the tapered shape. As a result, a clerance in the rotating guide holes 2c becomes about zero. Also, a clearance of a rotating guide hole 2d of the rotating member 2, and the supporting shaft 4 is set so as to become the minimum.

Description

【発明の詳細な説明】 （利用分野） 本発明は、磁気ヘッド調整機構に関し、特に、磁気記録
再生装置において、最適な磁気ヘッドの位置を得ること
ができる磁気ヘッド調整機構に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a magnetic head adjustment mechanism, and particularly to a magnetic head adjustment mechanism that can obtain an optimal position of a magnetic head in a magnetic recording/reproducing device.

（背景） 一般に、磁気記録再生装置、特にビデオテープレコーダ
に於いては、カセットより引出された磁気テープは、テ
ープガイドビン、消去ヘッド等を経由して回転ビデオヘ
ッドを有する回転ヘッドシリンダに所定角度巻付けられ
、さらにオーディオ消去ヘッド，オーディオ・コントロ
ールヘッド、テープガイドピン及びキャブスタン等を経
て、再びカセットに至る。(Background) Generally, in a magnetic recording/reproducing device, especially a video tape recorder, a magnetic tape pulled out from a cassette is passed through a tape guide bin, an erasing head, etc. to a rotating head cylinder having a rotating video head at a predetermined angle. The tape is then wound around the tape and passes through an audio erase head, an audio control head, a tape guide pin, a cab stan, etc., and then reaches the cassette again.

この様な該装置に於いては、特に他の装置で、映像信号
及び音声信号を記録した磁気テープを再生する場合、磁
気テープの音声トラック及びコントロールトラックに記
録された音声信号及びコントロールトラック．　例えば
オーディオ・コントロールヘッド等で正確にトレース出
来る様に、前記磁気ヘッドの位置を調整している。In such a device, especially when another device plays back a magnetic tape on which video signals and audio signals are recorded, the audio signals and control tracks recorded on the audio track and control track of the magnetic tape are used. For example, the position of the magnetic head is adjusted so that it can be traced accurately with an audio control head or the like.

従来の磁気ヘッド調整機構には、支軸に磁気へラドベー
スが取付けられ、この磁気ヘッドベースが、ヘッド位置
調整のため、支軸を中心に回動及び上下方向の動作が可
能に構成されたものがある。In conventional magnetic head adjustment mechanisms, a magnetic head base is attached to a support shaft, and this magnetic head base is configured to be able to rotate around the support shaft and move up and down in order to adjust the head position. There is.

しかしながら、この様な機構では、支軸と磁気へラドベ
ースの取付部内径との嵌合状態での間［（クリアランス
）を、はぼ零にすることが出来なかった。換言すれば、
支軸と磁気へラドベースの取付部内径との間には１間隙
を有していた。この様な従来の磁気ヘッド調整機構にお
いては、前記間隙のために、どうしても調整後における
最適ヘッド位置、特にアジマス調整がずれるとｂう欠点
が有った。However, with such a mechanism, it was not possible to reduce the clearance between the support shaft and the inner diameter of the mounting portion of the magnetic helad base to almost zero in the fitted state. In other words,
There was one gap between the support shaft and the inner diameter of the mounting portion of the magnetic helad base. Such a conventional magnetic head adjustment mechanism has a drawback that the optimum head position after adjustment, especially the azimuth adjustment, inevitably deviates due to the gap.

すなわち、特に他の装置で記録したものを再生したり、
又記録したものを他の装置で再生したりするという装置
間での磁気テープ（カセット）の互換性がとれないとい
う欠点が生じた。That is, especially when playing back recordings recorded on other devices,
Another disadvantage is that magnetic tapes (cassettes) cannot be used interchangeably between devices, such as when the recorded data is played back by another device.

（目的） 本発明の目的は、前記した従来技術の欠点を除去し、磁
気ヘッドを最適な位置に調整でき、かつ確実にその調整
した位置に固定することができる磁気ヘッド調整機構を
提供することにある。(Objective) An object of the present invention is to provide a magnetic head adjustment mechanism that can eliminate the drawbacks of the prior art described above, adjust the magnetic head to an optimal position, and reliably fix the magnetic head at the adjusted position. It is in.

（概要） 本発明の特徴は、磁気ヘッドを載置し、基板Ｃ二植立さ
れた支軸の回りを回動可能な回転部材の下方の回動ガイ
ド穴を、前記支軸とのクリアランスが極小になる様に設
定し、かつその上方の回動ガイド穴を断面テーバ状に形
成して、前記上方の回転ガイド穴の上部に設けられた軸
力保持部材の円錐状又は球面状の面（係合面）で係止で
きる様（ニし、さらに発条を前記基板と回動部材との間
に挿入して前記上方の回動ガイド穴が前記軸力保持部材
の保合面に押圧される様にした点にある。(Summary) A feature of the present invention is that a rotation guide hole at the bottom of a rotating member in which a magnetic head is placed and is rotatable around a support shaft mounted on the substrate C2 is provided with a clearance between the rotation guide hole and the support shaft. The upper rotation guide hole is set to be extremely small, and the upper rotation guide hole is formed to have a tapered cross section, and the axial force retaining member provided at the upper part of the upper rotation guide hole has a conical or spherical surface ( Further, a spring is inserted between the substrate and the rotation member so that the upper rotation guide hole is pressed against the retention surface of the axial force retention member. It is in the same way.

（実施例） 以下、本発明を図面を用いて説明する。(Example) Hereinafter, the present invention will be explained using the drawings.

第１図は、本発明の磁気へ・ノド調整機構の一実施例を
有するビデオテープ・レコーダの概略平面図である。同
図において、１は軸力保持部材としての調整ねじ、２は
回動部材、５はオーディオ消去ヘッド及びオーディオ・
コントロールヘッドからなる磁気ヘッド、４は支軸、５
は磁気テープ７の走行によシ回動部材２が反時計方向に
回動しようとするのを停止し、磁気ヘッド３の回動方向
の位置調整をするストッパ部材、６は回転ヘッドシリン
ダ、８はカセット、９はピンチローラ、１０はキャプス
タンである。FIG. 1 is a schematic plan view of a videotape recorder having an embodiment of the magnetic gutter adjustment mechanism of the present invention. In the figure, 1 is an adjustment screw as an axial force holding member, 2 is a rotating member, and 5 is an audio erasing head and an audio
A magnetic head consisting of a control head, 4 a spindle, 5
8 is a stopper member that stops the rotating member 2 from rotating counterclockwise due to the running of the magnetic tape 7 and adjusts the position of the magnetic head 3 in the rotating direction; 6 is a rotating head cylinder; 8 9 is a cassette, 9 is a pinch roller, and 10 is a capstan.

第１図において、カセット８より引出された磁気チーグ
アｉｆ、＋従来例と同様に１回転ヘッドシリンダ６に所
定角度巻付けられ、磁気ヘッド５に接触しながらピンチ
ローラ９とキャプスタン１０とにはさまれて、予定の速
度でカセット８内に再び巻取られる。In FIG. 1, the magnetic Tigue eye if pulled out from the cassette 8 is wound around the head cylinder 6 for one rotation at a predetermined angle as in the conventional example, and is attached to the pinch roller 9 and capstan 10 while in contact with the magnetic head 5. It is then wound up again into the cassette 8 at a predetermined speed.

第２図は、第１図に示した本発明の磁気ヘッド調整機構
の一部断面側面図である。同図におりて。FIG. 2 is a partially sectional side view of the magnetic head adjustment mechanism of the present invention shown in FIG. 1. In the same figure.

第１図と同−個所及び同等部分は同一符号で示す。Same parts and equivalent parts as in FIG. 1 are indicated by the same reference numerals.

２ａはその一端が基板１１に係止されてｂる発条、２ｂ
は前記発条２ａの他端を係止する回動部材２の切曲部、
２ｃは回動部材２の上方の回動ガイド穴、２ｄは回動部
材２の下方の回動ガイド穴である。2a is a spring whose one end is locked to the board 11; 2b;
is a bent portion of the rotating member 2 that locks the other end of the spring 2a;
2c is a rotation guide hole above the rotation member 2, and 2d is a rotation guide hole below the rotation member 2.

第２図において、基板１１に植立された支軸４には磁気
ヘッド３が載置された回動部材２が、前記支軸４の回り
を回動可能に取付られでいる。さらに、本実施例では、
発条２ａが、基板１１と回動部材２との間に挿入されて
おシ、前記回動部材２を上方に押圧する様にしている。In FIG. 2, a rotary member 2 on which a magnetic head 3 is mounted is attached to a support shaft 4 set up on a substrate 11 so as to be rotatable around the support shaft 4. As shown in FIG. Furthermore, in this example,
The spring 2a is inserted between the base plate 11 and the rotating member 2, and presses the rotating member 2 upward.

−万、本実施例では、支軸４に設けられたねじ部と、こ
れに取付けられた調整ねじ１とによって、その軸力を規
制する様にしている。この為に、回動部材２の基板１１
に対する高さは、調整ねじ１によって、調整できるよう
になっている。- In this embodiment, the axial force is regulated by the threaded portion provided on the support shaft 4 and the adjustment screw 1 attached thereto. For this purpose, the base plate 11 of the rotating member 2
The height can be adjusted using an adjustment screw 1.

さらに１本実施例では、回動部材２の上方の回動ガイド
穴２ｃの形状が、断面テーバ状に形成され、かつ調整ね
じ１の保合部が、前記テーバ状に嵌合する円錐状に形成
されて因る。その結果、前記上方の回動ガイド穴２ｃに
おけるクリアランスは、はぼ零となって因る。又、本実
施例では、回動部材２の下方の回動ガイド穴２ｄと、支
軸４々のクリアランスも極小になるように設定されてい
る。Furthermore, in this embodiment, the shape of the rotation guide hole 2c above the rotation member 2 is formed to have a tapered cross section, and the retaining portion of the adjustment screw 1 has a conical shape that fits into the tapered shape. Depends on the formation. As a result, the clearance in the upper rotation guide hole 2c becomes almost zero. Further, in this embodiment, the clearance between the lower rotation guide hole 2d of the rotation member 2 and the support shafts 4 is also set to be minimal.

（効果） 以上の説明から明らかな様に、本発明では、磁気ヘッド
を載置し、支軸の回りを回動可能な回動部材の下方の回
動ガイド穴を支軸とのクリアランスが極小になる様に設
定し、かつその上方の回動ガイド穴を、断面テーパ状に
形成して、支軸と螺合した調整ねじの円錐状面で係止す
る様にした。(Effect) As is clear from the above explanation, in the present invention, the clearance between the rotation guide hole at the bottom of the rotation member on which the magnetic head is placed and the rotation member that can rotate around the support shaft is extremely small. In addition, the rotation guide hole above the rotation guide hole was formed to have a tapered cross section so that it could be locked by the conical surface of the adjustment screw screwed into the support shaft.

父、本発明では、発条を基板と回動部材の間に挿入し、
前記断面テーバ状の回動ガイド穴が、調整ねじの円錐状
面に押圧される様にした。Father, in the present invention, the spring is inserted between the base plate and the rotating member,
The rotation guide hole having a tapered cross section is pressed against the conical surface of the adjustment screw.

この結果、本発明によれば、支軸と調整ねじ、及び調整
ねじと回動部材との間隙を、それぞれ零とすることがで
きるので、支軸と回動部材とのがたをほぼ零とすること
ができた。この為に、本発明によれば、最適なヘッド高
さ位置に調整できることは勿論、調整後における磁気ヘ
ッドの高さずれがほとんど生じることがな込。As a result, according to the present invention, the gaps between the support shaft and the adjustment screw, and the gaps between the adjustment screw and the rotating member can be made zero, so the play between the support shaft and the rotating member can be reduced to almost zero. We were able to. For this reason, according to the present invention, it is possible to adjust the head height to an optimal position, and almost no deviation in height of the magnetic head occurs after adjustment.

すなわち、本発明によれば、各装置間における磁気ヘッ
ドの高さ位置のばらつきを大幅に低減させることかでき
るので、各装置間での磁気テーフ。That is, according to the present invention, variations in the height position of the magnetic head between each device can be significantly reduced, so that the magnetic tape between each device can be reduced.

（カセット）の互換性に優れるという効果がある。(Cassette) compatibility is excellent.

なお、以上の説明では、上方の回動ガイド穴２Ｃと係合
する調整ねしの保合面形状を円錐状とした場合であった
が、必ずしもこｎに限られることはなく、球面状として
も同様の効果が得られる。In addition, in the above explanation, the shape of the retaining surface of the adjustment screw that engages with the upper rotation guide hole 2C is conical, but it is not necessarily limited to this shape, and may be spherical. A similar effect can be obtained.

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

第１図は本発明の磁気ヘッド調整機構の一実施例を有す
るビデオテープレコーダの概略平面図、第２図は第１図
に示した本発明の磁気ヘッド調整機構の一部断面側面図
である。 １・・・調整ねじ、２・・・回動部材、２ａ・・・発条
、２ｃ、２ｄ・・・回動ガイド穴、３・・磁気ヘッド、
４・・・支軸、１１・・・基板FIG. 1 is a schematic plan view of a video tape recorder having an embodiment of the magnetic head adjusting mechanism of the present invention, and FIG. 2 is a partially sectional side view of the magnetic head adjusting mechanism of the present invention shown in FIG. . DESCRIPTION OF SYMBOLS 1... Adjustment screw, 2... Rotating member, 2a... Spring, 2c, 2d... Rotating guide hole, 3... Magnetic head,
4... Support shaft, 11... Board

Claims (2)

【特許請求の範囲】[Claims] （１）基板に植立された支軸と、磁気ヘッドを載置し、
互いに対向する上下二つの回動ガイド穴が前記支軸と嵌
合することにより前記支軸を中心に回動可能な回動部材
と、前ｄピ上の回動ガイド穴の上部に取付けられ、軸力
を保持する軸力保持部材と、前記基板及び回動部材の間
に挿入され前記軸力保持部材に軸力を供与する発条とを
具備し、前記上の回動ガイド穴の形状を断面テーパ状と
し、かつ前記軸力保持部材の係合部の形状を円錐状又は
球面上としたことを特徴とする磁気ヘッド調整機構。(1) Place the spindle planted on the board and the magnetic head,
a rotating member that can rotate about the supporting shaft by fitting two upper and lower rotating guide holes facing each other with the supporting shaft; and a rotating member that is attached to the upper part of the rotating guide hole on the front d-pin; It comprises an axial force holding member that holds axial force, and a spring that is inserted between the substrate and the rotating member and applies axial force to the axial force holding member, and the shape of the upper rotation guide hole is formed in a cross section. A magnetic head adjustment mechanism characterized in that the engaging portion of the axial force retaining member is tapered and has a conical or spherical shape. （２）軸力保持部材が支軸と螺合し、その結果、軸力保
持部材の調整によシ、磁気ヘッドを載置した回動部材の
基板に対する高さ位置を可変できる様にしたことを特徴
とする特許 囲第１項記載の磁気ヘッド調整機構。(2) The axial force holding member is screwed together with the support shaft, and as a result, the height position of the rotating member on which the magnetic head is mounted relative to the substrate can be varied by adjusting the axial force holding member. 1. A magnetic head adjustment mechanism as described in Patent No. 1, characterized in that:
JP9936483A 1983-06-06 1983-06-06 Magnetic head adjusting mechanism Granted JPS59227025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9936483A JPS59227025A (en) 1983-06-06 1983-06-06 Magnetic head adjusting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9936483A JPS59227025A (en) 1983-06-06 1983-06-06 Magnetic head adjusting mechanism

Publications (2)

Publication Number Publication Date
JPS59227025A true JPS59227025A (en) 1984-12-20
JPH0150966B2 JPH0150966B2 (en) 1989-11-01

Family

ID=14245505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9936483A Granted JPS59227025A (en) 1983-06-06 1983-06-06 Magnetic head adjusting mechanism

Country Status (1)

Country Link
JP (1) JPS59227025A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109316U (en) * 1986-12-30 1988-07-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109316U (en) * 1986-12-30 1988-07-14

Also Published As

Publication number Publication date
JPH0150966B2 (en) 1989-11-01

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