JPH0124733Y2 - - Google Patents
Info
- Publication number
- JPH0124733Y2 JPH0124733Y2 JP18762782U JP18762782U JPH0124733Y2 JP H0124733 Y2 JPH0124733 Y2 JP H0124733Y2 JP 18762782 U JP18762782 U JP 18762782U JP 18762782 U JP18762782 U JP 18762782U JP H0124733 Y2 JPH0124733 Y2 JP H0124733Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- magnetic
- coil
- core
- head 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
- 239000000696 magnetic material Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000702 sendust Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Magnetic Heads (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案はビデオテープレコーダ（VTR）に適
用して好適な磁気ヘツドに関する。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a magnetic head suitable for application to a video tape recorder (VTR).
(ロ) 従来技術
ヘリカルスキヤンVTRでは一般に回転体に１
対の磁気ヘツドを例えば180度の隔角度で取付け、
各磁気ヘツドが実質的に同一のトラツクを走査す
るようにしている。そのため、各磁気ヘツドは基
準面に対する作動ギヤツプの位置を可及的に精度
よく構成することが要請される。ところで、従来
の磁気ヘツド例えば高抗磁力テープへの記録、再
生に適するものとして提案されている第１図に示
すものでは、磁気ヘツドベースＢに接着材層（図
示省略）を介在させて取付けるべき磁気ヘツドチ
ツプＣは金属磁性材よりなるコア主体Ｍを１対の
補強コアS1，S2でサンドイツチしてなるものであ
るから、磁気ヘツドベースＢとコア主体Ｍの間に
厚み精度を出しにくい２つの要因すなわち接着材
層及び補強コアS2を有し、磁気ヘツドの基準面
（例えば磁気ヘツドベースの表面Ba）に対するコ
ア主体Ｍつまり作動ギヤツプの位置を正確に規定
することが難しかつた。とくに、厚さの薄い補強
コアの厚みコントロールが難しく生産性を害なう
一因となつていた。またこの磁気ヘツドは、磁気
ヘツドベースＢ、磁気ヘツドチツプＣを構成する
コア主体Ｍ、２枚の補強コアS1，S2、及びコイル
Ｗの５点で構成されているので、部品点数及び組
立作業数が多くこの点でも量産性を害なうものと
なつている。(b) Conventional technology In a helical scan VTR, generally one
Install a pair of magnetic heads at an angle of 180 degrees, for example,
Each magnetic head scans substantially the same track. Therefore, each magnetic head is required to configure the position of the operating gap with respect to the reference plane as accurately as possible. By the way, in the conventional magnetic head shown in FIG. 1 which has been proposed as suitable for recording and reproducing on high coercive force tape, for example, the magnetic head to be attached is attached to the magnetic head base B with an adhesive layer (not shown) interposed therebetween. Since the head chip C is made by sandwiching a core main body M made of a metal magnetic material with a pair of reinforcing cores S 1 and S 2 , there are two factors that make it difficult to achieve thickness accuracy between the magnetic head base B and the core main body M. That is, it has an adhesive layer and a reinforcing core S2 , and it is difficult to accurately define the position of the core body M, that is, the operating gap, with respect to the reference plane of the magnetic head (for example, the surface Ba of the magnetic head base). In particular, it has been difficult to control the thickness of the thin reinforcing core, which has been a factor in reducing productivity. In addition, this magnetic head is composed of five parts: a magnetic head base B, a core main body M constituting the magnetic head chip C, two reinforcing cores S 1 and S 2 , and a coil W, so the number of parts and assembly work is There are many problems, and in this respect, mass production is also hindered.
(ハ) 考案の目的
本考案は磁気ヘツドチツプを取付けるための磁
気ヘツドベースを、磁気ヘツドチツプの補強コア
として兼用する磁気ヘツドを提供しようとするも
のである。(c) Purpose of the invention The present invention aims to provide a magnetic head in which the magnetic head base on which the magnetic head chip is attached also serves as a reinforcing core for the magnetic head chip.
(ニ) 考案の構成
本考案の磁気ヘツドは金属磁性材よりなるコア
本体と、このコア本体を支持する磁気ヘツドベー
スと、これらに付設するコイルとを備えることを
特徴とするものである。磁気ヘツドベースは磁性
材よりなる基部と非磁性材よりなる先端部を配備
しており、両者の間にコイルを巻くための貫通孔
を具備している。先端部はコア主体のフロントギ
ヤツプを裏当てするように配置され、また貫通孔
はコア主体のコイル窓に向かい合うように配置さ
れる。そして、これらコイル窓及び貫通孔に隣接
する磁脚部にコイルを巻き付けるようにしてい
る。(d) Structure of the invention The magnetic head of the invention is characterized by comprising a core body made of a metal magnetic material, a magnetic head base that supports this core body, and a coil attached to these. The magnetic head base has a base made of a magnetic material and a tip made of a non-magnetic material, and a through hole for winding a coil is provided between the two. The tip portion is arranged so as to back the front gap of the main body of the core, and the through hole is arranged so as to face the coil window of the main body of the core. A coil is then wound around the magnetic leg portions adjacent to these coil windows and through holes.
(ホ) 実施例
第２図イとロは本考案の磁気ヘツドの１実施例
の平面図と側面図であり、第３図イとロは磁気ヘ
ツドベースの平面図と側面図である。(E) Embodiment FIGS. 2A and 2B are a plan view and a side view of an embodiment of the magnetic head of the present invention, and FIGS. 3A and 3B are a plan view and a side view of the magnetic head base.
磁気ヘツドＨは磁気ヘツドベース１と、コア主
体２、コイル３とを備えており、ヘリカルスキヤ
ンVTRではこの磁気ヘツドの１組をシリンダー
に内装される回転体（図示省略）の180度隔てた
位置に対称的に配備されるものである。 The magnetic head H includes a magnetic head base 1, a core body 2, and a coil 3. In a helical scan VTR, one set of magnetic heads is placed 180 degrees apart on a rotating body (not shown) housed in a cylinder. They are arranged symmetrically.
磁気ヘツドベース１はフエライト等の固有抵抗
の大きい磁性材よりなる基部１１と、コア主体の
材料（たとえばセンダスト、アモルフアス磁性合
金等）に比べてテープ走行時の耐摩耗性が小さい
ガラスス材（非磁性材）よりなる先端部１２とを
備えている。基部１１には上記回転体にこの磁気
ヘツドベース１を接着するために接着剤を充てん
する透孔１３と、先端部１２に対向する突部１４
の先方に開設してなる貫通孔１５を備えている。
この貫通孔１５の両側に隣接する部分１６，１６
はコア主体２の対応部分と共に磁脚部を構成し、
この磁脚部にはコイル３がいわゆるバランス巻き
される。 The magnetic head base 1 has a base 11 made of a magnetic material with high specific resistance such as ferrite, and a glass material (non-magnetic material) which has lower wear resistance during tape running than core-based materials (such as Sendust, amorphous magnetic alloy, etc.). ). The base 11 has a through hole 13 filled with adhesive to bond the magnetic head base 1 to the rotating body, and a protrusion 14 facing the tip 12.
A through hole 15 is provided at the end of the hole.
Portions 16, 16 adjacent to both sides of this through hole 15
constitutes a magnetic leg part together with the corresponding part of the core main body 2,
A coil 3 is wound in a so-called balance around this magnetic leg.
コア主体２はセンダストよりなるコア半体２
１，２２をフロントギヤツプ２３にSiO2膜のス
ペーサを挾んで突き合わされており、各コア半体
の対向面間には上記貫通孔１５に対向するように
コイル窓２４を備えている。このコイル窓２４は
フロントギヤツプ２３の下端を規定し、またフロ
ントギヤツプ２３は磁気ヘツドベース１の先端部
１２に対向配置されかつ裏当てされている。 Core main body 2 is core half 2 made of Sendust
1 and 22 are butted against a front gap 23 with a SiO 2 film spacer in between, and a coil window 24 is provided between the opposing surfaces of each core half so as to face the through hole 15. The coil window 24 defines the lower end of the front gap 23, and the front gap 23 is disposed opposite to and backed by the tip 12 of the magnetic head base 1.
磁気ヘツドベース１に対するコア主体２の取付
けは、コア主体２のフロントギヤツプ２３とコイ
ル窓２４とをそれぞれ磁気ヘツドベース１の先端
部１２と貫通孔１５とに合うように配置し、両者
間に有機接着剤を浸透することで完成される。次
いでコイル３を上記磁脚部に巻き付け、コイルの
リード端は磁気ヘツドベース１上に付設したター
ミナル（図示省略）に接続される。 To attach the core main body 2 to the magnetic head base 1, the front gap 23 and the coil window 24 of the core main body 2 are arranged so as to fit with the tip 12 and the through hole 15 of the magnetic head base 1, respectively, and an organic adhesive is applied between them. It is completed by permeation. Next, the coil 3 is wound around the magnetic leg, and the lead end of the coil is connected to a terminal (not shown) provided on the magnetic head base 1.
(ヘ) 考案の効果
本考案の磁気ヘツドは磁気ヘツドベースにコア
主体を直に（接着材を介している）取付け、この
一体物にコイルを付設してなるものであるから、
その組立作業性を改善できるし、またコア主体の
フロントギヤツプ近辺を除く大部分を磁気ヘツド
ベースの磁性材よりなる基部に裏当てするように
しているので磁気抵抗を小さくすることができ再
生出力特性を低下させることはない。(f) Effects of the invention The magnetic head of the invention is made by attaching the main body of the core directly to the magnetic head base (via an adhesive), and attaching the coil to this integrated body.
The ease of assembly can be improved, and since most of the core, except for the area around the front gear, is backed by the base made of magnetic material of the magnetic head base, magnetic resistance can be reduced, reducing playback output characteristics. I won't let you.
第１図イ，ロは従来の磁気ヘツドの平面図と、
−′断面図である。第２図イ，ロは本考案の
磁気ヘツドの１実施例の平面図と側面図であり、
第３図イ，ロは磁気ヘツドベースの平面図と側面
図である。
主な図番の説明、２……コア主体、１……磁気
ヘツドベース、２４……コイル窓、１２……先端
部、１５……貫通孔。
Figures 1A and 1B are plan views of a conventional magnetic head,
−′ cross-sectional view. Figures 2A and 2B are a plan view and a side view of one embodiment of the magnetic head of the present invention,
Figures 3A and 3B are a plan view and a side view of the magnetic head base. Explanation of main drawing numbers, 2...Core main body, 1...Magnetic head base, 24...Coil window, 12...Tip, 15...Through hole.
Claims (1)
を支持する磁気ヘツドベースに、前記コア主体
のフロントギヤツプとコイル窓とがそれぞれ前
記磁気ヘツドベースの非磁性材よりなる先端部
と貫通孔とに対向するように添設し、前記コイ
ル窓と前記貫通孔に隣接する磁脚部にコイルを
付設してなる磁気ヘツド。 (2) 前記磁気ヘツドベースは前記先端部を除いて
磁性材（フエライト）で構成され、VTRの上
下シリンダー間に内装される回転デイスクに取
付けられるものである登録請求の範囲第(1)項記
載の磁気ヘツド。[Claims for Utility Model Registration] (1) A core body made of a metal magnetic material is mounted on a magnetic head base that supports the core body, and a front gap and a coil window of the core body are each made of a non-magnetic material of the magnetic head base. A magnetic head comprising a coil attached to a magnetic leg portion which is attached so as to face a tip end portion and a through hole, and which is adjacent to the coil window and the through hole. (2) The magnetic head base is made of a magnetic material (ferrite) except for the tip, and is attached to a rotating disk installed between the upper and lower cylinders of a VTR. magnetic head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18762782U JPS5992418U (en) | 1982-12-10 | 1982-12-10 | magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18762782U JPS5992418U (en) | 1982-12-10 | 1982-12-10 | magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5992418U JPS5992418U (en) | 1984-06-22 |
| JPH0124733Y2 true JPH0124733Y2 (en) | 1989-07-26 |
Family
ID=30404965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18762782U Granted JPS5992418U (en) | 1982-12-10 | 1982-12-10 | magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5992418U (en) |
-
1982
- 1982-12-10 JP JP18762782U patent/JPS5992418U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5992418U (en) | 1984-06-22 |
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