JPH02199608A - Composite magnetic head - Google Patents
Composite magnetic headInfo
- Publication number
- JPH02199608A JPH02199608A JP1792889A JP1792889A JPH02199608A JP H02199608 A JPH02199608 A JP H02199608A JP 1792889 A JP1792889 A JP 1792889A JP 1792889 A JP1792889 A JP 1792889A JP H02199608 A JPH02199608 A JP H02199608A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- insertion groove
- reproducing
- core
- erasing
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims description 18
- 230000037431 insertion Effects 0.000 claims abstract description 26
- 238000003780 insertion Methods 0.000 claims abstract description 26
- 230000006866 deterioration Effects 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は磁気記録媒体に情報の書込み、読出し。[Detailed description of the invention] Industrial applications The present invention relates to writing and reading information to and from a magnetic recording medium.
消去を行う複合磁気ヘッドに関するものである。This invention relates to a composite magnetic head that performs erasing.
従来の技術
従来、磁気ヘッドは目的又は、機能の異なる磁気ヘッド
を合体し複合磁気ヘッドとして用いられている。2. Description of the Related Art Conventionally, magnetic heads having different purposes or functions have been combined to form a composite magnetic head.
近年、磁気記録再生装置は小型化及び大容量化が図られ
、記録再生時の狭トラツク化及び短波長記録がなされて
いる。更に、磁気記録再生の高速書込み、読出しも行わ
れている。In recent years, magnetic recording and reproducing apparatuses have been made smaller and have larger capacities, and narrower tracks and shorter wavelengths are being recorded during recording and reproducing. Furthermore, high-speed writing and reading of magnetic recording and reproducing is also performed.
従来の複合磁気ヘッドは第４図に示すように、磁気テー
プ送入側に消去コア１４．１４’、磁気テープ送出側に
記録再生コア１５．１６’を配した固定枠１６と、この
固定枠１６の磁気テープ送出側を囲むように配したシー
ルドケース１７により構成されている。As shown in FIG. 4, the conventional composite magnetic head includes a fixed frame 16 with an erasing core 14.14' on the magnetic tape feeding side and a recording/reproducing core 15.16' on the magnetic tape feeding side, and this fixed frame. The shield case 17 is arranged to surround the magnetic tape sending side of the magnetic tape 16.
更に、固定枠１６は、樹脂成形品、亜鉛及びアルミニウ
ム等のダイカスト品又は＝ｍ脂及び非鉄金属材料の機械
的な加工品などで構成されている。Further, the fixed frame 16 is made of a resin molded product, a die-cast product made of zinc and aluminum, or a mechanically processed product made of aluminum and non-ferrous metal materials.
発明が解決しようとする課題
しかしながら、このような従来の複合磁気ヘッドでは非
磁性材で構成された固定枠１６の磁気テープ送入側の外
周部に設けられたシールドケース１７で構成されている
ため、消去コア１４ 、１４’から発生した磁束は、記
録再生コア１５．１６’に誘導にされる。更に、磁気記
録媒体を駆動するモータなどの外部誘導磁束は記録再生
コア１６゜１６′に誘導され易いものであった。Problems to be Solved by the Invention However, such a conventional composite magnetic head consists of a shield case 17 provided on the outer periphery of the magnetic tape feeding side of the fixed frame 16 made of a non-magnetic material. , the magnetic flux generated from the erasing cores 14, 14' is guided to the recording/reproducing cores 15, 16'. Furthermore, externally induced magnetic flux from a motor or the like that drives the magnetic recording medium is easily induced into the recording and reproducing cores 16 and 16'.
記録時、記録再生コア１６．１６’は、消去コア１４
、１’４’から発生する消去磁界によ□リバイアス電流
が変化し、出力電圧の低下、−８／Ｎ比の劣化を招く。During recording, the recording/reproducing core 16.16' is the erasing core 14.
, 1'4' causes the rebias current to change, resulting in a decrease in the output voltage and a deterioration in the -8/N ratio.
更に再生時においては、外部からの誘導磁界１例えば、
記録媒体駆動用モータ、電源トランスなどの漏洩磁界の
影響を受け、出力電圧の低下、８７Ｎ比の劣化を招く欠
点を有していた。Furthermore, during reproduction, an externally induced magnetic field 1, for example,
It has the disadvantage that it is affected by leakage magnetic fields from the recording medium drive motor, power transformer, etc., resulting in a drop in output voltage and deterioration of the 87N ratio.
本発明は上記従来の複合磁気ヘッドの課題を解決するも
ので、消去ヘッドと記録再生ヘッドを一体で構成してい
る固定枠の消去ヘッドと記録再生ス神入溝、複合ａ気ヘ
ッド＾部のコア対抗面側にシールド板挿入溝を配し、更
に、シールド板、シールドケースを磁気的に結合し記録
再生コアへの誘導磁束を低減する。The present invention solves the above-mentioned problems of the conventional composite magnetic head, and consists of a fixed frame erasing head, a recording/reproducing groove, and a composite a-magnetic head part, which integrally constitutes the erasing head and the recording/reproducing head. A shield plate insertion groove is arranged on the side facing the core, and the shield plate and the shield case are magnetically coupled to reduce the induced magnetic flux to the recording/reproducing core.
更に、シールド板を固定枠に挿入接着するため固定枠の
機械的強度が増加し、量産性に富み、高性能な複合磁気
ヘッドを提供するものである。Furthermore, since the shield plate is inserted into and bonded to the fixed frame, the mechanical strength of the fixed frame is increased, and a high-performance composite magnetic head is provided which is suitable for mass production.
課題を解決するための手段
上記課題を解決するために本発明の複合磁気ヘッドは一
消去コア挿入溝と記録再生コア挿入溝の間にシールドケ
ース挿入溝、消去コアと記録再生コアの間にシールド板
挿入溝を設けた固定枠、により、シールド板とシールド
ケースを磁気的に結合されるように構成したものである
。Means for Solving the Problems In order to solve the above problems, the composite magnetic head of the present invention has a shield case insertion groove between the erasing core insertion groove and the recording/reproducing core insertion groove, and a shield between the erasing core and the recording/reproducing core. The shield plate and the shield case are configured to be magnetically coupled by a fixed frame provided with a plate insertion groove.
作用
本発明は上記した構成により、消去コアと記録再生コア
の間にシールド部材を配し、消去コアより発生すする消
去磁束、外部誘導磁束の記録再生コアへの磁気漏洩を低
減させることにより出力電圧実施例
以下本発明の一実施例について図面を参照しながら説明
する。第１図は本発明の一実施例における複合磁気ヘッ
ドを示す正面図である。Effect of the present invention With the above-described configuration, a shield member is disposed between the erasing core and the recording/reproducing core, and the magnetic leakage of the erasing magnetic flux generated from the erasing core and the externally induced magnetic flux to the recording/reproducing core is reduced, thereby producing an output. VOLTAGE EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a composite magnetic head in one embodiment of the present invention.
第１図において、１．１′は消去コア、２．２′は記録
再生コアー３．３’は消去ギャップ、４゜４′は記録再
生ギャップ、６．６′は消去コア挿入溝、６．６’は記
録再生コア挿入溝、７は固定枠、８はシールドケースで
あシ８、シー、ルド、ケース色は、固定枠７の消去コア
挿入、溝７ 、７’、と爬、録再生コア挿入溝６．６′
の間まで組込まれている。In FIG. 1, 1.1' is an erasing core, 2.2' is a recording/reproducing core, 3.3' is an erasing gap, 4°4' is a recording/reproducing gap, 6.6' is an erasing core insertion groove, and 6. 6' is the recording/reproducing core insertion groove, 7 is the fixed frame, 8 is the shield case, the case color is the erasing core insertion in the fixed frame 7, grooves 7, 7', and the recording/reproducing area. Core insertion groove 6.6'
It is incorporated between.
以上０ように構成され複合磁気へ・ト［に′）、、、、
；、て以下にその詳細について説明する。It is configured as above 0 to complex magnetic field.
The details will be explained below.
第２図に示すように消去コイル１０よシ発生した磁束は
消去コア１に設けられた、゛消去ギャップ３により記ｉ
媒体に作用子る消去磁界φ１を抛１する。との時、消去
磁界よシ発゛生する漏洩゛磁葬′φムは、消去コア１と
記録再生゛ジブ−の間に組込まれた、シールドケース８
．）シールド板９に誘導され、□記録再生コア２．記録
再生ギャップ４へは達しないため、記録再生コイλ１１
で゛の電Ｍ−起は発生しない。As shown in FIG. 2, the magnetic flux generated by the erase coil 10 is recorded by the erase gap 3 provided in the erase core 1
The erasing magnetic field φ1 acting on the medium is removed. The leakage generated by the erase magnetic field is caused by the shield case 8 installed between the erase core 1 and the recording/reproducing jib.
．． ) Guided by the shield plate 9, □ recording/reproducing core 2. Since the recording/reproducing gap 4 is not reached, the recording/reproducing coil λ11
No electric current occurs.
次に、゛第ｉ′ｌｉ４により内部検数を説明す名。゛第
３′図において、固定枠ｔａ記録両生コア２゜２′と消
去コア１ ”’、’ １ ”の間の磁気テープ走行面側
にシールドケース挿入’＠１：ｒ、７対側にシールド板
挿入溝１３′を配し、高透磁率か゛らなるシールド板９
とシールドケース８を゛挿゛久固定する□。Next, the name that explains the internal count by the i'li4.゛In Figure 3', a shield case is inserted on the magnetic tape running surface side between the fixed frame ta recording amphitheater core 2゜2' and the erasing core 1 ``'', ``1''. A shield plate 9 having a plate insertion groove 13' and having high magnetic permeability.
and securely insert the shield case 8 □.
更に、シールド板９とシールドケース８は磁気的に結合
させること１、も可能である。Furthermore, it is also possible to magnetically couple the shield plate 9 and the shield case 8.
発明の効果
以上のように本発明は、固定枠の記録再生コアと消去コ
アの間の磁気テープ走行面側にシールドケース挿入溝、
反対側にシールド板挿入溝を配し、シールドケース、シ
ールド板を固定し、記録再生コアと消去コ、アの磁気的
な干渉を低減し、出力電圧の低下、、８．／Ｎ比の１劣
、化を生じ々い複合磁気ヘッドの提供が可能になる。Effects of the Invention As described above, the present invention provides a shield case insertion groove on the magnetic tape running surface side between the recording/reproducing core and the erasing core of the fixed frame.
A shield plate insertion groove is arranged on the opposite side to fix the shield case and the shield plate to reduce magnetic interference between the recording/reproducing core and the erasing core, thereby reducing the output voltage.8. It becomes possible to provide a composite magnetic head in which the /N ratio is not easily deteriorated by 1.
更に、固定枠に配したシールド板挿入溝にあらかじめシ
ールド板を挿入固定することにより、製造時の固定枠の
機械的強度は増大し、製造が容易になり、量産性に豊み
安価で高性岬な複合磁気ヘッドが実現できる。、、−１
１１、
以上のよう、（杏発明による複合磁気ヘッド４優れた効
果を得ることができる。Furthermore, by inserting and fixing the shield plate into the shield plate insertion groove arranged in the fixed frame in advance, the mechanical strength of the fixed frame during manufacturing increases, making manufacturing easier, making it easier for mass production, making it inexpensive and highly efficient. A unique composite magnetic head can be realized. ,,-1
11. As described above, excellent effects can be obtained with the composite magnetic head 4 according to the invention.
４、図面の簡単な説明 、 ・・。4. Brief explanation of the drawings...
第１ｒｉＡは本発明の一実施例における複合磁気ヘッド
を示す正面図、第２図は本発明の一実施例における磁気
漏洩を説明するための構成を示す、平面断面図、第３図
は本発明の実施例における複合磁気ヘッドの主要部を示
す分解斜視図、第４図は従来の複合磁気ヘッドを示す斜
視図である。1riA is a front view showing a composite magnetic head according to an embodiment of the present invention, FIG. 2 is a plan sectional view showing a configuration for explaining magnetic leakage in an embodiment of the present invention, and FIG. 3 is a front view showing a composite magnetic head according to an embodiment of the present invention. FIG. 4 is an exploded perspective view showing the main parts of the composite magnetic head in this embodiment, and FIG. 4 is a perspective view showing the conventional composite magnetic head.
１．１′・・・・・・消去コア、２．２′・・・・・・
記録再生コア、３・・・・・・シールド部材、４・・・
・・・固定枠、６・・・・・シールドケース、６，６′
・・・・・・消去コア挿入溝、７．７′・・・・・・記
録再生コア挿入溝、８・・・・・・シールド部材挿入溝
、９・・・・・・シールド板、１０・・・・・・消去コ
イル、１１・・・・・・Ｅ録再生コイル、１２・・・・
・・シールドケース挿入溝、１３・・・・・・シールド
板挿入溝。1.1'...Erase core, 2.2'...
Recording/reproducing core, 3... Shield member, 4...
...Fixed frame, 6...Shield case, 6,6'
... Erasing core insertion groove, 7.7' ... Recording and reproducing core insertion groove, 8 ... Shield member insertion groove, 9 ... Shield plate, 10 ...Erasing coil, 11...E recording/reproduction coil, 12...
...Shield case insertion groove, 13...Shield plate insertion groove.
代理人の氏名 弁理士 粟野 重 孝 ほか１名図
／、 ／’−−−消云ゴア
１、２’−一言己韓算生ゴア
３、 ｓ’−−−ラ所去午潰ツブ
４．４′・−畜己會表再生、千゛イッ７゜ｓ、 ｓ’−
一湧云コ了オ申入溝−
６、ｌ、′−記鉾茸主コ了仲人墳−
７−・−ｍ定枠
８−シールドブース
第
図
第
図
１５’Name of agent: Patent attorney Shigetaka Awano and 1 other figure/, /'-----Elimination Gore 1, 2'-Hitotsu Kokansei Gore 3, s'--Rasho Gourmet Tsubu 4. 4'--Rebirth of the beast's meeting, 1000 7゜s, s'-
15'
Claims (1)
間の磁気テープ走行面側にシールドケース挿入溝、対抗
面側にシールド板挿入溝を設けた固定枠と、前記シール
ド板挿入溝に挿入固定されたシールド板と、前記シール
ドケース挿入溝に挿入固定され前記シールド板に磁気的
結合されたシールドケースを備えた複合磁気ヘッド。An erasing core, a recording/reproducing core, a fixing frame having a shield case insertion groove on the magnetic tape running surface side between the erasing core and the recording/reproduction core, and a shield plate insertion groove on the opposite side, and a fixing frame that is inserted into the shield plate insertion groove. A composite magnetic head comprising a fixed shield plate and a shield case inserted and fixed in the shield case insertion groove and magnetically coupled to the shield plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1792889A JPH02199608A (en) | 1989-01-27 | 1989-01-27 | Composite magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1792889A JPH02199608A (en) | 1989-01-27 | 1989-01-27 | Composite magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02199608A true JPH02199608A (en) | 1990-08-08 |
Family
ID=11957435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1792889A Pending JPH02199608A (en) | 1989-01-27 | 1989-01-27 | Composite magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02199608A (en) |
-
1989
- 1989-01-27 JP JP1792889A patent/JPH02199608A/en active Pending
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