JPS6326454B2 - - Google Patents
Info
- Publication number
- JPS6326454B2 JPS6326454B2 JP56045751A JP4575181A JPS6326454B2 JP S6326454 B2 JPS6326454 B2 JP S6326454B2 JP 56045751 A JP56045751 A JP 56045751A JP 4575181 A JP4575181 A JP 4575181A JP S6326454 B2 JPS6326454 B2 JP S6326454B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- mounting plate
- magnetic tape
- cylinder
- head mounting
- 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
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect 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
Description
【発明の詳細な説明】
この発明はビデオテープレコーダ等におけるヘ
ツドの位置調整装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a head position adjustment device for a video tape recorder or the like.
一般にビデオテープレコーダにおけるローデイ
ング装置として第１図に示すものが知られてい
る。 A loading device shown in FIG. 1 is generally known as a loading device for a video tape recorder.
１はカセツトであり、該カセツトにはリールハ
ブ２ａ，２ｂに巻装された磁気テープ３が収納さ
れている。この磁気テープ３はカセツト１の正面
側４の開口から引出し可能であり、第１図はこの
磁気テープ３がローデインポール１０，１０′に
より引出されて回転ヘツドを有する円筒状の回転
ヘツドシリンダ５の周面へ当接された状態が示さ
れている。 A cassette 1 stores a magnetic tape 3 wound around reel hubs 2a and 2b. This magnetic tape 3 can be drawn out from an opening on the front side 4 of the cassette 1, and as shown in FIG. The state in which it is in contact with the peripheral surface of is shown.
６は消去ヘツド、７はコントロールヘツドであ
り上記の引出された磁気テープ３が当接される。
８はキヤプスタン、９はピンチローラであり、こ
れらにより磁気テープ３は定速走行される。 Reference numeral 6 denotes an erasing head, and 7 a control head, to which the above-mentioned drawn-out magnetic tape 3 is brought into contact.
8 is a capstan, 9 is a pinch roller, and the magnetic tape 3 is run at a constant speed by these.
次にコントロールヘツド７の取付の構成につい
て第２図に示す。第２図において１１はベースフ
レームであり、このベースフレーム１１にスライ
ドベース１２をネジ止めし、ネジ棒１３をスライ
ドベース１２にかしめ、該ネジ棒に調整用リング
１４を螺合している。 Next, the structure of mounting the control head 7 is shown in FIG. In FIG. 2, reference numeral 11 denotes a base frame. A slide base 12 is screwed to this base frame 11, a threaded rod 13 is caulked to the slide base 12, and an adjustment ring 14 is screwed onto the threaded rod.
又、ベースフレーム１１の肉厚部１５にシヤフ
ト１６を圧入し、該シヤフトには調整用スプリン
グ１７を遊嵌し、さらにヘツド取付板１８にかし
められた案内筒１９を遊嵌し、その上からナツト
２０を取付ける。又、上記調整用スプリング１７
は案内筒１９と一体になつているヘツド取付板１
８を上方向と反時計方向に押圧している。さら
に、上記ヘツド取付板１８にはネジ２１とスプリ
ング２２を組合せることにより上下に調整できる
ように構成したヘツド台座２３を設け、該ヘツド
台座の上にコントロールヘツド７を固定する。こ
のヘツド取付板１８の縁部は前記調整リング１４
に圧接され、この調整用リング１４を回動するこ
とにより該コントロールヘツド７をテープ走行面
２４と略々平行に移動（回動）できるようにして
いる。 In addition, the shaft 16 is press-fitted into the thick part 15 of the base frame 11, the adjustment spring 17 is loosely fitted to the shaft, and the guide tube 19 caulked to the head mounting plate 18 is loosely fitted, and from above the shaft 16 is press-fitted. Install nut 20. In addition, the above adjustment spring 17
is the head mounting plate 1 integrated with the guide tube 19.
8 is pressed upward and counterclockwise. Further, the head mounting plate 18 is provided with a head pedestal 23 which can be adjusted up and down by a combination of screws 21 and springs 22, and the control head 7 is fixed on the head pedestal. The edge of this head mounting plate 18 is connected to the adjustment ring 14.
By rotating this adjustment ring 14, the control head 7 can be moved (rotated) substantially parallel to the tape running surface 24.
次に動作について説明する。一般に第１図のよ
うなビデオテープレコーダ装置においては、回転
ヘツドシリンダ５が180゜回転するごとに回転ヘツ
ドH1又はH2への切替が行なわれ第３図に示す磁
気パターンが描かれる。すなわち２個のヘツドの
うち各々１個のビデオヘツドでビデオ信号の１フ
イールドを、そして回転ヘツドシリンダ５の１回
転で２フイールド、すなわち１フレームを走査す
るようになつている。 Next, the operation will be explained. In general, in a video tape recorder device as shown in FIG. 1, each time the rotary head cylinder 5 rotates through 180 degrees, a switch is made to the rotary head H1 or H2 , and the magnetic pattern shown in FIG. 3 is drawn. That is, one video head of the two heads scans one field of the video signal, and one rotation of the rotary head cylinder 5 scans two fields, that is, one frame.
回転ヘツドH1，H2は回転ヘツドシリンダ５の
周囲に180゜間隔で２個設けられ、磁気テープ３は
回転ヘツドシリンダ５に略々半円周だけ巻きつけ
られて走行する。再生時において記録のときと同
じトラツク上を回転ヘツドH1又はH2がトレース
するためには、回転ヘツドシリンダ５の回転速度
を記録時と同じ回転になるように制御してやる必
要がある。そのためには記録時に垂直同期信号か
ら得られた矩形波信号をコントロール信号Ｓとし
て、コントロールヘツド７で磁気テープ３に記録
する。 Two rotary heads H 1 and H 2 are provided around the rotary head cylinder 5 at 180° intervals, and the magnetic tape 3 is wound around the rotary head cylinder 5 by approximately half a circumference and runs. In order for the rotary head H1 or H2 to trace the same track during reproduction as during recording, it is necessary to control the rotational speed of the rotary head cylinder 5 so that it rotates at the same speed as during recording. To this end, during recording, a rectangular wave signal obtained from a vertical synchronizing signal is used as a control signal S, and is recorded on the magnetic tape 3 by the control head 7.
再生時には上記のコントロール信号Ｓを再生
し、コントロール信号Ｓと上記回転ヘツドシリン
ダ５の回転を一致させるようにモーター（図示せ
ず）を制御し、記録のときと同じトラツク上を回
転ヘツドH1又はH2がトレースする。そのために
はヘツドシリンダ５からの磁気テープ３の出口Ｐ
点とコントロールヘツド７のギヤツプの位置P′点
迄の距離を所定のものとする必要がある。 During reproduction, the control signal S is reproduced, a motor (not shown) is controlled so that the rotation of the rotation head cylinder 5 coincides with the control signal S, and the rotation head H 1 or the rotation head cylinder 5 is moved on the same track as during recording. H 2 traces. For this purpose, the exit P of the magnetic tape 3 from the head cylinder 5 is
It is necessary to set a predetermined distance between the point and the gap position P' of the control head 7.
上述のようにコントロールヘツド７の位置は、
規格上定められた位置にセツトされるが、従来の
ビデオテープレコーダにおけるコントロールヘツ
ド７の位置調整装置は前記したように第２図のよ
うに構成されているので、部品点数が多く高価で
あり、かつヘツドシリンダ５はドラムシヤシＡ
へ、ネジ棒はスライドベース１２へ、またヘツド
取付板１８はベースフレーム１１へそれぞれ各別
に取付られ、更に上記ドラムシヤシＡがスライド
ベース１２へ、このスライドベース１２がベース
フレーム１１へ取付られるというように、分割さ
れたものを総合的に組上げて調整しなければなら
ず組立及び調整作業が繁雑になるという欠点があ
つた。又、調整用リング１４がゆるみやすい等の
欠点があつた。 As mentioned above, the position of the control head 7 is
Although the control head 7 is set at a position specified by the standard, the position adjusting device for the control head 7 in a conventional video tape recorder is constructed as shown in FIG. And the head cylinder 5 is a drum shaft A.
Then, the threaded rod is attached to the slide base 12, the head mounting plate 18 is attached to the base frame 11, and the drum shaft A is attached to the slide base 12, and this slide base 12 is attached to the base frame 11, and so on. However, there was a drawback that the divided parts had to be assembled and adjusted as a whole, making the assembly and adjustment work complicated. Further, there were drawbacks such as the adjustment ring 14 being easily loosened.
本発明は上記のような従来のものの欠点を除去
するためになされたもので、ドラムシヤシＡとヘ
ツド取付板１８等が直接同一の基台へ取付られる
ように構成され、調整がらくになり、調整部品点
数も少なくでき、さらには調整リング１４のゆる
みをなくすようにしたヘツド位置調整装置を提供
することを目的としている。 The present invention has been made in order to eliminate the drawbacks of the conventional ones as described above, and is configured so that the drum shaft A, the head mounting plate 18, etc. are directly mounted on the same base, making adjustment easy and requiring no adjustment parts. It is an object of the present invention to provide a head position adjusting device in which the number of points can be reduced and furthermore, the loosening of the adjusting ring 14 can be eliminated.
以下本発明の一実施例を第４図及び第５図を用
いて説明する。第４図においてＡはドラムシヤシ
であり、ドラムシヤシＡには周知の（第４図では
省略してあるが、第２図の回転ヘツドシリンダ５
と同一のもの）回転ヘツドドラムが固定され、さ
らに上記ドラムシヤシＡにはヘツド取付板１８に
かしめられ、平座金２５を有したシヤフト２６を
遊嵌し、さらに該シヤフトには下側より調整スプ
リング２７を遊嵌し、その上からナツト２８を取
り付けることによつてヘツド取付板１８が軸着さ
れている。さらに該ドラムシヤシＡにはテーパー
付調整ネジ２９が螺着されている。上記ドラムシ
ヤシＡと上記ヘツド取付板１８との間には第５図
に示すようにスプリング３５を張架して、上記ヘ
ツド取付板１８の端部を上記テーパー付調整ネジ
２９に圧接している。上記ヘツド取付板１８に上
下調整機構、すなわち、ネジ２１とスプリング２
２を介してヘツド取付台座２３を装着し、上記ヘ
ツド取付台座２３にヘツド７を固定している。 An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. In FIG. 4, A is a drum shaft, which is well-known (although omitted in FIG. 4, the rotary head cylinder 5 in FIG.
A rotary head drum is fixed, and a shaft 26 having a flat washer 25 and swaged to the head mounting plate 18 is loosely fitted to the drum shaft A, and an adjustment spring 27 is attached to the shaft from below. The head mounting plate 18 is pivotally attached by loosely fitting and attaching a nut 28 thereon. Furthermore, a tapered adjustment screw 29 is screwed onto the drum shaft A. As shown in FIG. 5, a spring 35 is stretched between the drum shaft A and the head mounting plate 18, and the end of the head mounting plate 18 is pressed against the tapered adjustment screw 29. The head mounting plate 18 has a vertical adjustment mechanism, that is, a screw 21 and a spring 2.
A head mounting pedestal 23 is mounted via the head 2, and the head 7 is fixed to the head mounting pedestal 23.
上記テーパー付調整ネジ２９を回動すると、ヘ
ツド取付板１８に当接されている上記したテーパ
ー付調整ネジ２９の頭部（テーパー状）の径が変
り、これにより上記の如くスプリング３５に付勢
されたヘツド取付板１８の回動位置が可変され、
上記コントロールヘツド７を上記磁気テープの走
行面２４と略々平行に移動することができる。
又、テーパー付調整ネジ２９とドラムシヤシＡの
間にスプリング３０を入れてテーパー付調整ネジ
２９のゆるみを防止している。 When the tapered adjustment screw 29 is rotated, the diameter of the head (tapered shape) of the tapered adjustment screw 29 that is in contact with the head mounting plate 18 changes, thereby biasing the spring 35 as described above. The rotational position of the head mounting plate 18 is changed,
The control head 7 can be moved substantially parallel to the running surface 24 of the magnetic tape.
Further, a spring 30 is inserted between the tapered adjustment screw 29 and the drum shaft A to prevent the tapered adjustment screw 29 from loosening.
上記説明ではスプリング３０によりテーパー付
調整ネジ２９のゆるみ止めをしているが、第６図
に示すようにしてもよい。第６図において、３２
は前記ドラムシヤシＡに形成された締付用切欠き
部であり、該切欠き部の上部肉厚部３３は下部肉
厚部３１より厚く取り、該上部肉厚部の平面度が
悪くならないように注意して決定された部分であ
る。上記ネジ３４を締めつけることによりテーパ
ー付調整ネジ２９は振動落下等によるゆるみを生
じないのでネジロツクの必要がない。 In the above description, the tapered adjustment screw 29 is prevented from loosening by the spring 30, but it may be configured as shown in FIG. 6. In Figure 6, 32
is a tightening notch formed in the drum shaft A, and the upper thick part 33 of the notch is made thicker than the lower thick part 31 so that the flatness of the upper thick part does not deteriorate. This is a part that was carefully decided. By tightening the screw 34, the tapered adjusting screw 29 does not become loose due to vibration or falling, so there is no need to lock the screw.
また、スプリング３５を他の場所へ移動さすこ
とによつてテーパー付調整ネジ２９の取付位置も
移動可能である。尚符号３６は周知の音声ヘツド
を示すものである。 Furthermore, by moving the spring 35 to another location, the mounting position of the tapered adjustment screw 29 can also be moved. Reference numeral 36 designates a well-known audio head.
本発明は以上のような構成になつているので、
カセツト１に収納された磁気テープ３を上記カセ
ツト１から引出して回転ヘツドH1，H2を有する
円筒状のヘツドシリンダ５の周面へ当接するビデ
オテープレコーダ等において、上記円筒状のヘツ
ドシリンダ５が固定されているドラムシヤシＡに
ヘツド取付板１８を軸着するとともに、テーパー
付調整ネジ２９を螺着し、上記ドラムシヤシＡと
上記ヘツド取付板１８とにスプリング３５を張架
して上記ヘツド取付板１８の端部を上記テーパー
付調整ネジ２９に圧接し、上記ヘツド取付板１８
に上下調整機構、すなわち、ネジ２１とスプリン
グ２２を介してヘツド取付台座２３を装着し、上
記ヘツド取付台座２３にヘツド７を固定して、上
記テーパー付調整ネジ２９の調整により、該ヘツ
ドを上記テープ走行面２４と略々平行に移動（回
動）できるようにして、上記ヘツドシリンダ５か
らの磁気テープ３の出口Ｐ点と上記ヘツド７のギ
ヤツプの位置P′点迄の距離を調整できるようにし
たから、ドラムブロツクとヘツドブロツクが一体
になり組立上及び調整上の作業性を向上させるこ
とができる。 Since the present invention has the above configuration,
The cylindrical head cylinder 5 is used in a video tape recorder or the like in which the magnetic tape 3 stored in the cassette 1 is pulled out from the cassette 1 and comes into contact with the circumferential surface of a cylindrical head cylinder 5 having rotating heads H 1 and H 2 . At the same time, the head mounting plate 18 is pivotally mounted on the drum shaft A to which the head mounting plate 18 is fixed, and the tapered adjustment screw 29 is screwed on. 18 is pressed into contact with the tapered adjustment screw 29, and the head mounting plate 18 is
Attach the head mounting pedestal 23 to the head via the vertical adjustment mechanism, that is, the screw 21 and the spring 22, fix the head 7 to the head mounting pedestal 23, and adjust the tapered adjustment screw 29 to adjust the head to the above-mentioned position. It can be moved (rotated) approximately parallel to the tape running surface 24, so that the distance between the exit point P of the magnetic tape 3 from the head cylinder 5 and the gap position P' of the head 7 can be adjusted. Since the drum block and the head block are integrated, it is possible to improve the ease of assembly and adjustment.
又、従来まで別々であつたネジ棒１３と調整リ
ング１４も一体化され、テーパー付調整ネジ２９
として構成されているので部品点数が少なくな
り、コストを下げることができる。 In addition, the threaded rod 13 and adjustment ring 14, which were separate until now, are now integrated, and the tapered adjustment screw 29
Since it is configured as , the number of parts is reduced and costs can be lowered.
第１図は従来例を構成する説明図、第２図は従
来例におけるヘツド位置調整装置の斜視図、第３
図は回転２ヘツド方式における磁気テープパター
ンを示す、第４図は本発明によるヘツド位置調整
装置の側面図、第５図は本発明によるヘツド位置
調整装置の平面図、第６図は本発明における他の
実施例の側面図である。
１：カセツト、３：磁気テープ、H1，H2：回
転ヘツド、５：ヘツドシリンダ、７：コントロー
ルヘツド、Ｐ点：回転ヘツドシリンダからの磁気
テープ３の出口、P′点：コントロールヘツドのギ
ヤツプ位置、１８：ヘツド取付板、２３：ヘツド
台座、２９：テーパー付調整ネジ、３５：スプリ
ング。
Fig. 1 is an explanatory diagram configuring a conventional example, Fig. 2 is a perspective view of a head position adjustment device in the conventional example, and Fig. 3 is an explanatory diagram configuring a conventional example.
The figures show a magnetic tape pattern in a rotating two-head system, FIG. 4 is a side view of the head position adjusting device according to the present invention, FIG. 5 is a plan view of the head position adjusting device according to the present invention, and FIG. FIG. 7 is a side view of another embodiment. 1: Cassette, 3: Magnetic tape, H 1 , H 2 : Rotating head, 5: Head cylinder, 7: Control head, Point P: Exit of magnetic tape 3 from the rotating head cylinder, Point P': Gap of control head. Position, 18: Head mounting plate, 23: Head pedestal, 29: Tapered adjustment screw, 35: Spring.
Claims (1)
ツトから引出して回転ヘツドを有する円筒状のヘ
ツドシリンダの周面へ当接するビデオテープレコ
ーダ等において、上記円筒状のヘツドシリンダが
固定されているドラムシヤシにヘツド取付板を軸
着するとともに、テーパー付調整ネジを螺着し、
上記ドラムシヤシと上記ヘツド取付板とにスプリ
ングを張架して上記ヘツド取付板の端部を上記テ
ーパー付調整ネジに圧接し、上記ヘツド取付板に
上下調整機構を介してヘツド取付台座を装着し、
上記ヘツド取付台座にヘツドを固定して、上記テ
ーパー付調整ネジの調整により、該ヘツドを上記
磁気テープの走行面と略々平行に移動できるよう
にして、上記ヘツドシリンダからの磁気テープの
出口と上記ヘツドのギヤツプの位置迄の距離を調
整できるようにしたことを特徴とするビデオテー
プレコーダ等におけるヘツド位置調整装置。1. In a video tape recorder, etc., in which a magnetic tape stored in a cassette is pulled out from the cassette and comes into contact with the circumferential surface of a cylindrical head cylinder having a rotating head, the head is attached to a drum chassis to which the cylindrical head cylinder is fixed. Attach the plate to the shaft and screw in the tapered adjustment screw.
A spring is stretched between the drum shaft and the head mounting plate, the end of the head mounting plate is pressed into contact with the tapered adjustment screw, and a head mounting pedestal is attached to the head mounting plate via a vertical adjustment mechanism,
The head is fixed to the head mounting pedestal, and by adjusting the tapered adjustment screw, the head can be moved approximately parallel to the running surface of the magnetic tape, so that the magnetic tape exits from the head cylinder. A head position adjusting device for a video tape recorder, etc., characterized in that the distance to the position of the gap of the head can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4575181A JPS57162121A (en) | 1981-03-27 | 1981-03-27 | Head position adjusting device of video tape recorder or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4575181A JPS57162121A (en) | 1981-03-27 | 1981-03-27 | Head position adjusting device of video tape recorder or the like |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57162121A JPS57162121A (en) | 1982-10-05 |
| JPS6326454B2 true JPS6326454B2 (en) | 1988-05-30 |
Family
ID=12728006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4575181A Granted JPS57162121A (en) | 1981-03-27 | 1981-03-27 | Head position adjusting device of video tape recorder or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57162121A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58161129A (en) * | 1982-03-19 | 1983-09-24 | Hitachi Ltd | Magnetic head adjusting mechanism |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5539523B2 (en) * | 1971-12-20 | 1980-10-13 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213221Y2 (en) * | 1978-09-04 | 1987-04-06 |
-
1981
- 1981-03-27 JP JP4575181A patent/JPS57162121A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5539523B2 (en) * | 1971-12-20 | 1980-10-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57162121A (en) | 1982-10-05 |
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