JPS6138526B2 - - Google Patents
Info
- Publication number
- JPS6138526B2 JPS6138526B2 JP15977880A JP15977880A JPS6138526B2 JP S6138526 B2 JPS6138526 B2 JP S6138526B2 JP 15977880 A JP15977880 A JP 15977880A JP 15977880 A JP15977880 A JP 15977880A JP S6138526 B2 JPS6138526 B2 JP S6138526B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- magnetic head
- magnetic
- head base
- base
- 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
- 238000000926 separation method Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory 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
- G11B5/52—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 simultaneous movement of head and record carrier, e.g. rotation of head
- G11B5/53—Disposition or mounting of heads on rotating support
- G11B5/531—Disposition of more than one recording or reproducing head on support rotating cyclically around an axis
Description
【発明の詳細な説明】
本発明は１つのヘツドベース上に第１、第２磁
気ヘツドチツプを精度良く取り付けることができ
る磁気ヘツド装置を提供しようとするものであ
る。DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a magnetic head device in which first and second magnetic head chips can be mounted on a single head base with high precision.
ヘリカルスキヤン方式のビデオテープレコーダ
において、特殊再生モード時における再生画質の
向上を図るために、円筒状ガイドシリンダ内で回
転するヘツド回転体上に180度の隔角度をもつて
配設された一対の主磁気ヘツドと共に、これらの
トラツキングが外れたときにそれを補償するため
の副磁気ヘツドを該主磁気ヘツドに近接配置する
技術が利用されている。そして、主副各磁気ヘツ
ド間の間隔が第１図に示す如く十分に大きいとき
には各磁気ヘツドをそれぞれヘツドベースを介し
てヘツド回転体に正しい位置で取付けるようにす
ることができるけれども、その間隔を極めて近接
させる必要がある場合には各磁気ヘツドの間隔を
許容値に収めるように各ヘツドベースをヘツド回
転体に取り付けることは極めて困難で、殆んど不
可能と言える。各磁気ヘツドを適当な治具で押え
ることができず、ヘツド回転体へのヘツドベース
のねじ止め時に生じる回転力を防ぐことができな
いからである。従つて１つのヘツドベースに２つ
の磁気ヘツドを貼着することが行なわれる。その
ような構造の従来例として特開昭49―104614号を
挙げることができる。この従来例の場合にはコア
の前方側を割溝によつて２つの部分に分け、その
各部分に磁気ヘツドを貼着しているが、２つの磁
気ヘツドが比較的離れており、更に近接配置する
ことは意図していないし、且つそれは不可能な構
造である。 In a helical scan type video tape recorder, in order to improve the playback quality in the special playback mode, a pair of heads are installed at a 180 degree angle on the head rotating body that rotates within a cylindrical guide cylinder. A technique is used in which, together with the main magnetic head, a sub-magnetic head is placed close to the main magnetic head in order to compensate for the loss of tracking. If the spacing between the main and sub magnetic heads is sufficiently large as shown in Figure 1, each magnetic head can be attached to the head rotating body at the correct position via the head base, but the spacing is extremely large. When it is necessary to make the magnetic heads close to each other, it is extremely difficult, almost impossible, to attach the head bases to the head rotating body so that the distance between the magnetic heads falls within a permissible value. This is because each magnetic head cannot be held down with a suitable jig, and the rotational force generated when the head base is screwed to the head rotating body cannot be prevented. Therefore, two magnetic heads are attached to one head base. A conventional example of such a structure is JP-A-49-104614. In this conventional example, the front side of the core is divided into two parts by a groove, and a magnetic head is attached to each part, but the two magnetic heads are relatively far apart and are even closer together. It is not intended and is an impossible structure to do so.
本発明は１つのヘツドベース上に２つの磁気ヘ
ツドチツプを相互の位置関係を正しく近接接合
し、併せてヘツド回転体のヘツドベースの取付け
作業性を、従来の単一磁気ヘツドのものに於ける
と同様に簡易化しようとするものである。 The present invention connects two magnetic head chips on one head base in close proximity to each other in a correct positional relationship, and also improves the workability of attaching the head base of the head rotating body to the same level as that of a conventional single magnetic head. This is an attempt to simplify the process.
次に本発明装置を図示実施例に基づき説明す
る。第２図は本実施例装置をヘツド回転体と共に
示したもので、イ図は平面図、ロ図は正面図、ハ
図は中央側断面図である。図において、１はヘツ
ド回転体、２はヘツドベース、３，４はそれぞれ
巻線５，６を施してなる磁気ヘツドチツプであ
る。ヘツド回転体１は円筒状ガイドシリンダ７内
で回転制御され、その半回転毎にヘツドベース２
とこれと対称的に設けたヘツドベース（図示省
略）にそれぞれ配設した各磁気ヘツドチツプによ
り、該円筒状ガイドシリンダ７周面にてん周走行
する磁気テープ上に所定のトラツクを走査するよ
うに構成されている。また、このヘツド回転体１
にはヘツドベース２をねじ止めするためのねじ８
を装着させるねじ孔９を備え、さらに後述するヘ
ツドベースの第１、第２部分に調整ねじを作用せ
しめうるように調整ねじ孔１０，１１を備えてい
る。 Next, the apparatus of the present invention will be explained based on illustrated embodiments. FIG. 2 shows the apparatus of this embodiment together with a head rotating body, where A is a plan view, B is a front view, and C is a sectional view from the center side. In the figure, 1 is a head rotating body, 2 is a head base, and 3 and 4 are magnetic head chips having windings 5 and 6, respectively. The rotation of the head rotating body 1 is controlled within the cylindrical guide cylinder 7, and the head base 2 is rotated every half rotation.
The magnetic tape is configured to scan a predetermined track on the magnetic tape running around the circumferential surface of the cylindrical guide cylinder 7 by each magnetic head chip disposed on a head base (not shown) provided symmetrically thereto. ing. In addition, this head rotating body 1
has screws 8 for screwing the head base 2.
It is provided with a screw hole 9 for mounting the head base, and further provided with adjustment screw holes 10 and 11 so that adjustment screws can be applied to first and second parts of the head base, which will be described later.
ヘツドベース２はその基部にねじ貫通孔１２を
備え、また中央部に径方向に延在するような分離
溝１３を備え、而して各磁気ヘツドチツプ３，４
のための第１、第２部分１４，１５を形成するよ
うにしている。このヘツドベース２は非磁性金属
（真ちゆう）で成形されていて、このヘツドベー
スに対して磁気ヘツドチツプを接合した後で巻装
される巻線５，６の各端部は該ヘツドベース２及
びヘツド回転体１の各リード挿通孔１６，１７を
通じてヘツド回転体１背面のプリント基板１８に
接続するようにしている。磁気ヘツドチツプ３，
４は幅狭のコア半体３ａ，４ａと幅広のコア半体
３ｂ，４ｂが対向接合した形をしており、磁気ヘ
ツドチツプ３，４はヘツドベース２の第１、第２
部分１４，１５にそれぞれ瞬間接着剤で接合され
るが、その接合は磁気ヘツドチツプのヘツドベー
スに対する位置を正確に規定するため各磁気ヘツ
ドチツプ毎に、それぞれヘツドベース２に対する
位置決めを行なつてから接着剤を塗布するように
している。その際、幅狭のコア半体３ａ，４ａ部
分はヘツドベース２から前記分離溝１３上にはみ
出るように配置される。最初の磁気ヘツドチツプ
の接合作業中に、他方の磁気ヘツドチツプ取付部
に接着剤が流動すると、後の磁気ヘツドチツプは
すでに固化しているこの流動接着剤を除去してか
らでないと高精度の取付を行なうことができな
い。本発明装置において、第１、第２部分１４，
１５を分割する分離溝１３が磁気ヘツドチツプ
３，４の後端よりも十分に後方に延びており接着
剤の上記流動を防止するようにするから、第１、
第２部分１４，１５の所定位置に各磁気ヘツドチ
ツプを正確に接合することができる。この接合工
程において、磁気ヘツドチツプのヘツドベースに
対する面方向の位置規制は比較的容易にできる
が、高さ方向の規制は、ヘツドベース２と磁気ヘ
ツドチツプ４，５の衝合面間にも接着剤が流入す
ることなどにより正しく行なわれない場合があ
る。この高さ方向の調整は調整ねじ孔１１に螺合
する調整ねじ１９，２０で、第１及び又は第２部
分１４，１５を自己の弾性に抗して変位せしめる
ことにより行なうことができる。分離溝１３の存
在は、この高さ方向の調整をも各磁気ヘツドチツ
プについて独立して行なわせるために明らかに寄
与する。なお、２１，２２は接着剤層である。 The head base 2 has a screw through hole 12 at its base, and a separation groove 13 extending in the radial direction at the center, and each magnetic head chip 3, 4
The first and second portions 14 and 15 are formed for the purpose. The head base 2 is made of non-magnetic metal (brass), and each end of the windings 5 and 6, which are wound after the magnetic head chip is bonded to the head base, is connected to the head base 2 and the head rotation. The lead is connected to a printed circuit board 18 on the back surface of the head rotating body 1 through lead insertion holes 16 and 17 in the body 1. Magnetic head tip 3,
4 has a shape in which narrow core halves 3a, 4a and wide core halves 3b, 4b are joined facing each other, and the magnetic head chips 3, 4 are connected to the first and second parts of the head base 2.
The parts 14 and 15 are joined with instant adhesive, but in order to accurately define the position of the magnetic head chip relative to the head base, each magnetic head chip is positioned relative to the head base 2, and then the adhesive is applied. I try to do that. At this time, the narrow core halves 3a and 4a are arranged so as to protrude from the head base 2 onto the separation groove 13. If adhesive flows into the mounting area of the other magnetic head chip during the bonding process of the first magnetic head chip, subsequent magnetic head chips must be installed with high precision only after removing this flowing adhesive that has already hardened. I can't. In the device of the present invention, the first and second portions 14,
The separation groove 13 dividing the magnetic head chips 15 extends sufficiently rearward from the rear ends of the magnetic head chips 3 and 4 to prevent the adhesive from flowing.
Each magnetic head chip can be precisely bonded to a predetermined position on the second portions 14,15. In this bonding process, it is relatively easy to regulate the position of the magnetic head chip relative to the head base in the plane direction, but when regulating the position in the height direction, the adhesive also flows between the abutting surfaces of the head base 2 and the magnetic head chips 4 and 5. It may not be done correctly due to some reasons. This adjustment in the height direction can be performed by displacing the first and/or second portions 14, 15 against their own elasticity using adjustment screws 19, 20 which are screwed into the adjustment screw holes 11. The presence of the separation groove 13 clearly contributes to making this adjustment in the height direction also independent for each magnetic head chip. Note that 21 and 22 are adhesive layers.
叙上の如く本発明装置によれば各磁気ヘツドチ
ツプを正しい位置で接合することができると共
に、各磁気ヘツドチツプのギヤツプ間の距離を著
しく短縮させることができるという効果がある。
各磁気ヘツドチツプを取り付けたヘツドベースは
ヘツド回転体に対して１つのねじで、従来の単一
磁気ヘツドチツプをもつものと同様の作業性でも
つて簡単に取りつけることができる。また、ヘツ
ドベース上の分離溝は第１、第２部分への各磁気
ヘツドチツプの取付作業性を向上させるに寄与
し、さらに高さ方向の独立調整を可能にする。 As described above, the apparatus of the present invention has the advantage that each magnetic head chip can be joined at the correct position, and the distance between the gap of each magnetic head chip can be significantly shortened.
The head base to which each magnetic head chip is attached can be easily attached to the head rotating body with one screw, with workability similar to that of a conventional head with a single magnetic head chip. Further, the separation groove on the head base contributes to improving the workability of attaching each magnetic head chip to the first and second parts, and further enables independent adjustment in the height direction.
第１図は従来装置の平面図である。第２図は本
発明装置をヘツド回転体と共に示すもので、イ図
は平面図、ロ図は正面図、ハ図はイ図の中央側断
面図である。
２…ヘツドベース、３，４…第１、第２磁気ヘ
ツドチツプ、３ａ，４ａ…幅狭のコア半体、３
ｂ，４ｂ…幅広のコア半体、１３…分離溝、１
４，１５…第１、第２部分。
FIG. 1 is a plan view of a conventional device. Fig. 2 shows the device of the present invention together with a head rotating body, in which Fig. A is a plan view, Fig. B is a front view, and Fig. C is a sectional view from the center of Fig. A. 2... Head base, 3, 4... First and second magnetic head chips, 3a, 4a... Narrow core half, 3
b, 4b...wide core half, 13...separation groove, 1
4, 15...first and second parts.
Claims (1)
第１、第２部分上に、それぞれ第１、第２ヘツド
チツプを接合してなる磁気ヘツド装置において、
前記第１、第２部分はヘツドベースの前端から後
方に向けて設けられた分離溝によつて分離されて
おり、この分離溝はヘツドベースに取り付けられ
たヘツドチツプの後端よりも十分に後方に延びて
おり、前記ヘツドチツプは幅狭のコア半体と幅広
のコア半体が対向接合された形を成し前記ヘツド
ベースには前記幅広のコア半体部分が接合され、
前記幅狭のコア半体部分はヘツドベースから前記
分離溝上にはみ出ている磁気ヘツド装置。1. A magnetic head device in which first and second head chips are respectively bonded to substantially separate first and second portions of one head base,
The first and second parts are separated by a separation groove provided rearward from the front end of the head base, and the separation groove extends sufficiently rearward than the rear end of the head chip attached to the head base. the head chip has a shape in which a narrow core half and a wide core half are joined facing each other, and the wide core half is joined to the head base;
In the magnetic head device, the narrow core half protrudes from the head base onto the separation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15977880A JPS5786125A (en) | 1980-11-12 | 1980-11-12 | Magnetic head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15977880A JPS5786125A (en) | 1980-11-12 | 1980-11-12 | Magnetic head device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5786125A JPS5786125A (en) | 1982-05-29 |
| JPS6138526B2 true JPS6138526B2 (en) | 1986-08-29 |
Family
ID=15701052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15977880A Granted JPS5786125A (en) | 1980-11-12 | 1980-11-12 | Magnetic head device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5786125A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03131739A (en) * | 1989-09-25 | 1991-06-05 | Ewison Ag | Method and device for extracting milk sample |
| WO2006046457A1 (en) | 2004-10-25 | 2006-05-04 | Mitsui Mining & Smelting Co., Ltd. | Liquid level detecting method and liquid level detecting device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3305618C2 (en) * | 1983-02-18 | 1986-04-30 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Head drum for a video magnetic tape recorder |
| JP2672725B2 (en) * | 1991-06-20 | 1997-11-05 | 三菱電機株式会社 | Movable head device |
-
1980
- 1980-11-12 JP JP15977880A patent/JPS5786125A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03131739A (en) * | 1989-09-25 | 1991-06-05 | Ewison Ag | Method and device for extracting milk sample |
| WO2006046457A1 (en) | 2004-10-25 | 2006-05-04 | Mitsui Mining & Smelting Co., Ltd. | Liquid level detecting method and liquid level detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5786125A (en) | 1982-05-29 |
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