JPH076906U

JPH076906U - Magnetic head

Info

Publication number: JPH076906U
Application number: JP3631793U
Authority: JP
Inventors: 健次塩沢
Original assignee: 株式会社三協精機製作所
Priority date: 1993-06-10
Filing date: 1993-06-10
Publication date: 1995-01-31

Abstract

(57)【要約】（修正有）【目的】分割式シ−ルド板で、シ−ルド板を突合せた
ギャップ部分で、コアからの漏れ磁束があっても、不要
な記録を生じさせない。【構成】磁気ヘッドは第１チャンネル用コア組１とシ
−ルド板２と第２チャンネル用コア組３が組み合わさ
れ、第１チャンネル用コア組１はコ字形のコア４、５の
対向する端部がつき合わされて接合され、ギャップ部ａ
の上部に媒体摺接部4aと媒体摺接部5aを形成した。第２
チャンネル用コア組３は第１チャンネル用コア組１と同
様に形成した。シ−ルド板２は磁性金属板で形成され
て、コア４と略同形の半体部７とコア５と略同形の半体
部８からなっていて窓孔がない。シ−ルド板２はつき合
わせ部7aとつき合わせ部8aがつき合わされ、上部に媒体
摺接部7bと媒体摺接部8bを形成した。シ−ルド板２の半
体部７のつき合わせ部7aの媒体摺接部7b位置に切欠部7c
を形成した。 (57) [Summary] (Modified) [Purpose] Even if there is a magnetic flux leaking from the core at the gap part where the shield plates are butted against each other, unnecessary recording does not occur. A magnetic head is composed of a first channel core set 1, a shield plate 2, and a second channel core set 3, and the first channel core set 1 is formed by U-shaped cores 4 and 5 at opposite ends. The parts are butted and joined to each other, and the gap part a
A medium sliding contact portion 4a and a medium sliding contact portion 5a are formed on the upper part of the. Second
The channel core set 3 was formed similarly to the first channel core set 1. The shield plate 2 is formed of a magnetic metal plate and is composed of a half body 7 having substantially the same shape as the core 4 and a half body 8 having substantially the same shape as the core 5, and has no window hole. The shield plate 2 has a butting portion 7a and a butting portion 8a butted together, and a medium sliding contact portion 7b and a medium sliding contact portion 8b are formed on the upper portion. A cutout portion 7c is formed at a position of the medium sliding contact portion 7b of the butting portion 7a of the half body portion 7 of the shield plate 2.
Was formed.

Description

[Detailed description of the device]

【０００１】[0001]

[Industrial applications]

本考案は、複数の磁気コアとその間にシ−ルド板とを有する磁気ヘッドに関する。 The present invention relates to a magnetic head having a plurality of magnetic cores and a shield plate between them.

【０００２】[0002]

[Prior art]

従来、多チャンネル用の磁気ヘッドには、例えば実公平４−45125 号公報のように、チャンネル間のクロスト−クを防止するシ−ルド板が入っている。このシ −ルド板が分割式シ−ルド板では、組立コストが安価であるが、図３のようにシ −ルド板２′のコアのギャップ部分に対応するつき合わせ部分がギャップｂの役目をして、コアからの漏れ磁束により、不要な記録が成されて不具合が発生していた。 Conventionally, a multi-channel magnetic head has a shield plate for preventing crosstalk between channels, as disclosed in Japanese Utility Model Publication No. 4-45125. If the shield plate is a split shield plate, the assembling cost is low, but as shown in FIG. 3, the abutting portion corresponding to the gap portion of the core of the shield plate 2'functions as the gap b. Then, the magnetic flux leaked from the core caused unnecessary recording, resulting in a defect.

【０００３】[0003]

[Problems to be solved by the device]

解決しようとする問題点は、分割式シ−ルド板では、シ−ルド板のつき合わせによるギャップ部分で、コアからの漏れ磁束により、不要な記録が成されて不具合が発生することである。 The problem to be solved is that in the divided shield plate, unnecessary recording is made by the magnetic flux leaking from the core in the gap part due to the abutting of the shield plates, and defects occur. .

【０００４】本考案の目的は上記欠点に鑑み、分割式シ−ルド板で、シ−ルド板のつき合わせによるギャップ部分で、コアからの漏れ磁束があっても、不要な記録が成されない磁気ヘッドを提案することである。In view of the above-mentioned drawbacks, an object of the present invention is to prevent unnecessary recording in a split shield plate even if there is a magnetic flux leaking from the core in the gap portion due to the abutting of the shield plates. It is to propose a magnetic head.

【０００５】[0005]

[Means for solving the problem]

本考案は、複数の磁気コアとその間のシ−ルド板とを有し、磁気コア及びシ− ルド板をつき合わせた磁気ヘッドに於て、シ−ルド板のつき合わせ部の一部を切欠いて、この切欠部に非磁性金属を設けたことを要旨とするものである。 The present invention is a magnetic head having a plurality of magnetic cores and a shield plate between them, and a magnetic core and a shield plate are attached to each other. The gist is to provide a non-magnetic metal in the notch.

【０００６】[0006]

【作用】シ−ルド板２の半体部７に非磁性金属のチップ９が設けられると、コア４、５及び４′、５′からの漏れ磁束があっても、シ−ルド板２で磁束の漏れを阻止し、かつ非磁性金属のチップ９により記録ギャップにならないので、シ−ルド板２による不要な記録が成されない。When the non-magnetic metal tip 9 is provided on the half body portion 7 of the shield plate 2, even if there is a leakage magnetic flux from the cores 4, 5 and 4 ', 5', the shield plate 2 is prevented. Since the leakage of magnetic flux is prevented and the recording gap is not formed by the non-magnetic metal tip 9, unnecessary recording is not performed by the shield plate 2.

【０００７】[0007]

【Example】

以下、図示の一実施例で本考案を説明する。図１は磁気ヘッドの分解斜視図、図２は磁気ヘッドのシ−ルド板の分解斜視図である。 Hereinafter, the present invention will be described with reference to an illustrated embodiment. 1 is an exploded perspective view of the magnetic head, and FIG. 2 is an exploded perspective view of a shield plate of the magnetic head.

【０００８】磁気ヘッドは第１チャンネル用コア組１とシ−ルド板２と第２チャンネル用コア組３が組み合わされて図示しないホルダ−等で保持されてシ−ルドケ−スの中に収容されて合成樹脂で固定されている。第１チャンネル用コア組１はコ字形のコア４、５の対向する端部がつき合わされて接合され、ギャップ部ａの上部に媒体摺接部4aと媒体摺接部5aが形成されている。コア４、５の下側にコイル６が巻回されている。第２チャンネル用コア組３は同様にコ字形のコア４′、５′の対向する端部がつき合わされて接合され、ギャップ部ａの上部に媒体摺接部4aと媒体摺接部5aが形成されている。コア４′、５′の下側にコイル６′が巻回されている。シ−ルド板２は磁性金属板で形成されて、コア４と略同形で窓孔のない半体部７とコア５と略同形で窓孔のない半体部８からなっている。勿論、シ−ルド板２の両側のコアとの接触部分には非磁性体が設けてあり、シ−ルド板とコアは絶縁されている。シ−ルド板２の半体部７と半体部８はつき合わせ部7aとつき合わせ部8aがつき合わされ、上部に媒体摺接部7bと媒体摺接部8bが形成されている。In the magnetic head, a first channel core set 1, a shield plate 2 and a second channel core set 3 are combined and held by a holder or the like (not shown) and housed in a shield case. It is fixed with synthetic resin. The first channel core set 1 has U-shaped cores 4 and 5 facing each other and joined to each other, and a medium sliding contact portion 4a and a medium sliding contact portion 5a are formed above the gap portion a. . The coil 6 is wound under the cores 4 and 5. Similarly, the second channel core set 3 is formed by joining opposite ends of U-shaped cores 4'and 5'to each other by abutting each other, and forming a medium sliding contact portion 4a and a medium sliding contact portion 5a above the gap portion a. Has been done. A coil 6'is wound under the cores 4 ', 5'. The shield plate 2 is formed of a magnetic metal plate and is composed of a half body portion 7 having substantially the same shape as the core 4 and no window hole, and a half body portion 8 having substantially the same shape as the core 5 and having no window hole. Of course, a non-magnetic material is provided in the contact portion of the shield plate 2 with the cores on both sides, and the shield plate and the core are insulated. The half body portion 7 and the half body portion 8 of the shield plate 2 have a butting portion 7a and a butting portion 8a butted together, and a medium sliding contact portion 7b and a medium sliding contact portion 8b are formed on the upper portion.

【０００９】シ−ルド板２の半体部７のつき合わせ部7aの媒体摺接部7b位置に切欠部7cが形成されている。この切欠部7cには非磁性金属のチップ９が嵌め込まれるように設けられている。非磁性金属のチップ９は例えばギャップ部ａの長さより大きい、大きさが１ｍｍ×１ｍｍ角程度に形成されている。A cutout portion 7c is formed at the position of the medium sliding contact portion 7b of the abutting portion 7a of the half body portion 7 of the shield plate 2. The notch 7c is provided so that the nonmagnetic metal chip 9 is fitted therein. The non-magnetic metal chip 9 is formed to have a size of, for example, 1 mm × 1 mm square, which is larger than the length of the gap a.

【００１０】シ−ルド板２の半体部７に非磁性金属のチップ９が設けられると、コア４、５及び４′、５′からの漏れ磁束があっても、シ−ルド板２で磁束の漏れを阻止し、かつ非磁性金属のチップ９により記録ギャップにならないので、シ−ルド板２による不要な記録が成されない。When the non-magnetic metal tip 9 is provided on the half body portion 7 of the shield plate 2, even if there is a leakage magnetic flux from the cores 4, 5 and 4 ′, 5 ′, the shield plate 2 is prevented. Since the leakage of magnetic flux is prevented and the recording gap is not formed by the non-magnetic metal tip 9, unnecessary recording is not performed by the shield plate 2.

【００１１】上記のように磁気ヘッドが構成されると、組立コストが安価な分割式シ−ルド板方式の磁気ヘッドの製造が可能であると共に、非磁性金属のチップ９は例えば大きさが１ｍｍ×１ｍｍ角程度と小さいので、シ−ルド効果の妨げにはならない。When the magnetic head is configured as described above, it is possible to manufacture a split shield plate type magnetic head which is inexpensive to assemble, and the nonmagnetic metal chip 9 has a size of, for example, 1 mm. Since it is as small as × 1 mm square, it does not hinder the shield effect.

【００１２】[0012]

[Effect of device]

本考案は上述のように、分割式シ−ルド板の一方のつき合わせ部に切欠部が形成されて切欠部に非磁性金属が設けられると、組立コストが安価な分割式シ−ルド板方式の磁気ヘッドの製造が可能であると共に、非磁性金属がシ−ルド効果の妨げにはならず、コアからの漏れ磁束があっても、非磁性金属でシ−ルド板による不要な記録が成されない等実用上優れた効果を奏する磁気ヘッドを提供することが出来る。 According to the present invention, as described above, when a cutout is formed in one butting portion of the split shield plate and a nonmagnetic metal is provided in the cutout, the split shield is inexpensive to assemble. It is possible to manufacture a plate-type magnetic head, and the non-magnetic metal does not hinder the shield effect. Even if there is a leakage magnetic flux from the core, the non-magnetic metal eliminates the need for a shield plate. Thus, it is possible to provide a magnetic head that exhibits practically excellent effects such as the absence of excellent recording.

[Brief description of drawings]

【図１】磁気ヘッドの分解斜視図である。FIG. 1 is an exploded perspective view of a magnetic head.

【図２】磁気ヘッドのシ−ルド板の分解斜視図である。FIG. 2 is an exploded perspective view of a shield plate of the magnetic head.

【図３】従来の磁気ヘッドシ−ルド板の分解斜視図であ
る。FIG. 3 is an exploded perspective view of a conventional magnetic head shield plate.

[Explanation of symbols]

２シ−ルド板４、５、４′、５′ コア 4a、5a、7b、8b 媒体摺接部 7a、8a つき合わせ部９非磁性金属 2 shield plate 4, 5, 4 ', 5'core 4a, 5a, 7b, 8b medium sliding contact part 7a, 8a butting part 9 non-magnetic metal

Claims

[Scope of utility model registration request]

1. A magnetic head comprising a plurality of magnetic cores and a shield plate between them, wherein a magnetic core and a shield plate are abutted to each other, and a part of an abutting portion of the shield plate is partially attached. A magnetic head having a notch and a nonmagnetic metal provided in the notch.