JPH0150966B2 - - Google Patents
Info
- Publication number
- JPH0150966B2 JPH0150966B2 JP9936483A JP9936483A JPH0150966B2 JP H0150966 B2 JPH0150966 B2 JP H0150966B2 JP 9936483 A JP9936483 A JP 9936483A JP 9936483 A JP9936483 A JP 9936483A JP H0150966 B2 JPH0150966 B2 JP H0150966B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- rotation guide
- guide hole
- axial force
- substrate
- 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
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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)
Description
【発明の詳細な説明】
（利用分野）
本発明は、磁気ヘツド調整機構に関し、特に、
磁気記録再生装置において、最適な磁気ヘツドの
位置を得ることができる磁気ヘツド調整機構に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a magnetic head adjustment mechanism, and in particular,
The present invention relates to a magnetic head adjustment mechanism that can obtain the optimum position of the 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、カセツトより引出された磁
気テープは、テープガイドピン、消去ヘツド等を
経由して回転ビデオヘツドを有する回転ヘツドシ
リンダに所定角度巻付けられ、さらにオーデイオ
消去ヘツド、オーデイオ・コントロールヘツド、
テープガイドピン及びキヤプスタン等を経て、再
びカセツトに至る。(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 pin, an erasing head, etc. to a rotating head cylinder having a rotating video head at a predetermined angle. It is also wrapped around the audio erase head, audio control head,
The tape passes through the tape guide pin, capstan, 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ツク及びコン
トロールトラツクに記録された音声信号及びコン
トロールパルスを、例えばオーデイオ・コントロ
ールヘツド等で正確にトレース出来る様に、前記
磁気ヘツドの位置を調整している。 In such a device, especially other devices,
When reproducing a magnetic tape on which video and audio signals have been recorded, the magnetic tape is Adjusting the head position.
従来の磁気ヘツド調整機構には、支軸に磁気ヘ
ツドベースが取付けられ、この磁気ヘツドベース
が、ヘツド位置調整のため、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。しかしながら、この様な機構では、支軸と磁
気ヘツドベースの取付部内径との嵌合状態での間
隙（クリアランス）を、ほぼ零にすることが出来
なかつた。換言すれば、支軸と磁気ヘツドベース
の取付部内径との間には、間隙を有していた。こ
の様な従来の磁気ヘツ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
ヘツド位置、特にアジマス調整がずれるという欠
点が有つた。 Some conventional magnetic head adjustment mechanisms include a magnetic head base 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. . However, with such a mechanism, it is not possible to reduce the gap (clearance) between the support shaft and the inner diameter of the mounting portion of the magnetic head base to almost zero when they are fitted together. In other words, there was a gap between the support shaft and the inner diameter of the mounting portion of the magnetic head base. Such conventional magnetic head adjustment mechanisms have the disadvantage that the optimal head position after adjustment, especially 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（カセツト）の
互換性がとれないという欠点が生じた。 That is, there has been a drawback that magnetic tapes (cassettes) are not compatible between devices, especially when playing back what was recorded on another device or when playing back what was recorded on 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、磁気ヘツ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
磁気ヘツ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、磁気ヘツドを載置し、基板に
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
イド穴を断面テーパ状に形成して、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）での係止できる様
にし、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
部材の係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 the rotation guide hole at the bottom of the rotating member, in which the magnetic head is mounted and is rotatable around a spindle mounted on a substrate, has an extremely small clearance with the spindle. The rotation guide hole above the rotation guide hole is formed to have a tapered cross section, and the conical or spherical surface (engagement) of the axial force retaining member provided above the upper rotation guide hole is Furthermore, a spring is inserted between the base plate and the rotation member so that the upper rotation guide hole is pressed against the engagement surface of the axial force holding member. That's the point.
（実施例）
以下、本発明の実施例を図面を用いて説明す
る。(Example) Hereinafter, an example of the present invention will be described using the drawings.
第１図は、本発明の磁気ヘツド調整機構の一実
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、３はオーデイオ消
去ヘツド及びオーデイオ・コントロールヘツドか
らなる磁気ヘツド、４は支軸、５は磁気テープ７
の走行により回動部材２が反時計方向に回動しよ
うとするのを停止し、磁気ヘツド３の回動方向の
位置調整をするストツパ部材、６は回転ヘツドシ
リンダ、８はカセツト、９はピンチローラ、１０
はキヤプスタンである。 FIG. 1 is a schematic plan view of a videotape recorder having an embodiment of the magnetic head 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, 3 is a magnetic head consisting of an audio erasing head and an audio control head, 4 is a spindle, and 5 is a magnetic tape 7.
A stopper member that stops the rotating member 2 from rotating counterclockwise due to the movement of the magnetic head 3 and adjusts the position of the magnetic head 3 in the rotating direction; 6 is a rotating head cylinder; 8 is a cassette; 9 is a pinch member; Laura, 10
is Capstan.
第１図において、カセツト８より引出された磁
気テープ７は、従来例と同様に、回転ヘツドシリ
ンダ６に所定角度巻付けられ、磁気ヘツド３に接
触しながらピンチローラ９とキヤプスタン１０と
にはさまれて、予定の速度でカセツト８内に再び
巻取られる。 In FIG. 1, a magnetic tape 7 pulled out from a cassette 8 is wound around a rotating head cylinder 6 at a predetermined angle, as in the conventional example, and is sandwiched between a pinch roller 9 and a capstan 10 while contacting the magnetic head 3. Then, it is 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ツド
調整機構の一部断面側面図である。同図におい
て、第１図と同一個所及び同等部分は同一符号で
示す。 FIG. 2 is a partially sectional side view of the magnetic head adjustment mechanism of the present invention shown in FIG. 1. In this figure, the same parts and parts as in FIG. 1 are indicated by the same reference numerals.
２ａはその一端が基板１１に係止されている発
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 base plate 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 rotating member 2; 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
には磁気ヘツド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ている。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り、前記回動部材
２を上方に押圧する様にしている。 In FIG. 2, the support shaft 4 installed on the substrate 11
A rotary member 2 on which a magnetic head 3 is placed is mounted rotatably around the support shaft 4 . Furthermore, in this embodiment, the spring 2a is inserted between the base plate 11 and the rotating member 2, so as to press the rotating member 2 upward.
一方、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とによつ
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によつて、調整できるようになつている。 On the other hand, 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 reason, the height of the rotating member 2 relative to the base plate 11 can be adjusted using the adjusting screw 1.
さらに、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、断面テーパ状に形成さ
れ、かつ調整ねじ１の係合部が、前記テーパ状に
嵌合する円錐状に形成されている。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、ほぼ零となつている。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と
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 engaging portion of the adjustment screw 1 has a conical shape that fits into the tapered shape. It is formed. As a result, the clearance in the upper rotation guide hole 2c is approximately zero. Further, in this embodiment, the clearance between the lower rotation guide hole 2d of the rotation member 2 and the support shaft 4 is also set to be minimal.
（効果）
以上の説明から明らかな様に、本発明の実施例
では、磁気ヘツドを載置し、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。又、本発明では、発条を基板と回動部材
の間に挿入し、前記断面テーパ状の回動ガイド穴
が、調整ねじの円錐状面に押圧される様にした。(Effects) As is clear from the above description, in the embodiment of the present invention, the magnetic head is placed in the rotation guide hole at the bottom of the rotation member that can rotate around the support shaft. The clearance is set to be extremely small, and the rotation guide hole above it is formed with a tapered cross section.
It was designed to lock with the conical surface of the adjustment screw screwed into the support shaft. Further, in the present invention, the spring is inserted between the base plate and the rotating member so that the rotating guide hole having a tapered cross section is pressed against the conical surface of the adjusting 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、最適なヘツ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ツドの高さず
れがほとんど生じることがない。 As a result, according to the present invention, the support shaft and the adjustment screw,
Also, since the gap between the adjusting screw and the rotating member can be made zero, the backlash between the support shaft and the rotating member can be made almost zero. Therefore, according to the present invention, it is possible to adjust the head height to an optimum position, and there is almost no deviation in the height of the magnetic head after adjustment.
すなわち、本発明の実施例によれば、各装置間
における磁気ヘツドの高さ位置のばらつきを大幅
に低減させることができるので、各装置間での磁
気テープ（カセツト）の互換性に優れるという効
果がある。 In other words, according to the embodiments of the present invention, it is possible to significantly reduce variations in the height position of the magnetic head between devices, resulting in excellent compatibility of magnetic tapes (cassettes) between devices. There is.
なお、以上の説明では、上方の回動ガイド穴２
ｃと係合する調整ねじの係合面形状を円錐状とし
た場合であつたが、必ずしもこれに限られること
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 upper rotation guide hole 2
Although the shape of the engaging surface of the adjusting screw that engages with c is conical, it is not necessarily limited to this, and the same effect can be obtained even if it is spherical.
第１図は本発明の磁気ヘツ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ツド調整
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
ツド、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 adjustment mechanism of the present invention;
FIG. 2 is a partially sectional side view of the magnetic head adjustment mechanism of the present invention shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Adjustment screw, 2... Rotation member, 2a... Spring, 2c, 2d... Rotation guide hole, 3... Magnetic head, 4... Support shaft, 11... Board.
Claims (1)
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、前記上の回動ガイド穴の上
部の前記支軸と螺合し、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
錐状又は球面状とし、前記軸力保持部材の調整に
より前記磁気ヘツドを載置した前記回動部材の前
記基板に対する高さ位置を可変できることを特徴
とする磁気ヘツド調整機構。1. A spindle installed on a substrate and a magnetic head placed thereon, which can be rotated around the spindle by fitting the upper and lower two rotation guide holes facing each other with the spindle. an axial force holding member that is inserted between the substrate and the rotational member and that is inserted between the substrate and the rotational member and that is screwed onto the support shaft at the upper part of the upper rotation guide hole and holds the axial force; a spring for applying force, the upper rotation guide hole has a tapered cross-section, and the engaging portion of the axial force holding member has a conical or spherical shape, and the axial force holding member A magnetic head adjustment mechanism characterized in that the height position of the rotating member on which the magnetic head is mounted relative to the substrate can be varied by adjusting the height of the rotary member on which the magnetic head is mounted.
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 JPS59227025A (en) | 1984-12-20 |
| JPH0150966B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109316U (en) * | 1986-12-30 | 1988-07-14 |
-
1983
- 1983-06-06 JP JP9936483A patent/JPS59227025A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59227025A (en) | 1984-12-20 |
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