JPS6341610Y2 - - Google Patents

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Publication number
JPS6341610Y2
JPS6341610Y2 JP1980071879U JP7187980U JPS6341610Y2 JP S6341610 Y2 JPS6341610 Y2 JP S6341610Y2 JP 1980071879 U JP1980071879 U JP 1980071879U JP 7187980 U JP7187980 U JP 7187980U JP S6341610 Y2 JPS6341610 Y2 JP S6341610Y2
Authority
JP
Japan
Prior art keywords
core
magnetic
gap
forming surface
magnetic head
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
Application number
JP1980071879U
Other languages
Japanese (ja)
Other versions
JPS56174116U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1980071879U priority Critical patent/JPS6341610Y2/ja
Publication of JPS56174116U publication Critical patent/JPS56174116U/ja
Application granted granted Critical
Publication of JPS6341610Y2 publication Critical patent/JPS6341610Y2/ja
Expired legal-status Critical Current

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  • Magnetic Heads (AREA)

Description

【考案の詳細な説明】 本考案は、磁気ヘツドの構造に関するもので、
時に抗磁力の高い磁気テープに狭記録トラツク巾
で記録する磁気ヘツドに適するものである。
[Detailed description of the invention] This invention relates to the structure of a magnetic head.
This is suitable for magnetic heads that sometimes record with a narrow recording track width on magnetic tapes with high coercive force.

従来よりフエライト材を用いた磁気ヘツドはセ
ンダスト合金、パーマロイ、アモリフアス合金等
の金属材料にくらべ、電気比抵抗が高いため、渦
電流損失が小さく、高周波特性が良い特徴を有す
るが、飽和磁束密度が低いため、抗磁力の高い磁
気テープに信号を記録する場合、ヘツドコアが飽
和してしまう問題があつた。
Conventionally, magnetic heads using ferrite materials have higher electrical resistivity than metal materials such as Sendust alloy, Permalloy, and Amolyphas alloy, so they have low eddy current loss and good high frequency characteristics, but they have low saturation magnetic flux density. Because of the low coercive force, when recording signals on a magnetic tape with high coercive force, there was a problem that the head core would become saturated.

また、センダスト合金等の金属材料による磁気
ヘツドは、飽和磁束密度は大きいが、電気比抵抗
が小さいため、渦電流損失が大きく、高周波特性
に劣る問題があつた。
Furthermore, magnetic heads made of metal materials such as Sendust alloy have a high saturation magnetic flux density, but have a low electrical resistivity, resulting in large eddy current loss and poor high frequency characteristics.

また、この金属材料による磁気ヘツドはテープ
との摺動による摩耗が激しくヘツド寿命の短かい
ものであつた。
Furthermore, the magnetic head made of this metal material suffers from severe wear due to sliding with the tape and has a short head life.

本考案は、上記の問題点に鑑み、フエライト材
と金属材料とを組合せ、上記問題点を解決せんと
するものであり、以下図面を参照して、その一実
施例を製造工程とともに説明する。
In view of the above-mentioned problems, the present invention aims to solve the above-mentioned problems by combining a ferrite material and a metal material.One embodiment of the present invention will be described below along with the manufacturing process with reference to the drawings.

図面において、1aは、飽和磁束密度の高いセ
ンダンスト合金や高パーマロイ等の金属材料より
形成された主コアであり、1bは高周波帯で優れ
た磁気特性を有するフエライト材8とガラス等の
非磁性材7とより形成された補助コアである。
In the drawing, 1a is a main core made of a metal material such as Sendanst alloy or high permalloy with high saturation magnetic flux density, and 1b is a main core made of a ferrite material 8 that has excellent magnetic properties in a high frequency band and a non-magnetic material such as glass. This is an auxiliary core formed by 7 and 7.

前記、コア1aと1bの形状は次の如く同一に
設計加工する。
The cores 1a and 1b are designed and processed to have the same shape as follows.

即ち、巻線溝2を中央に設け、その前後に区分
される2つの面部について、その面部3を前部ギ
ヤツプ形成面とし、他の面部4を後部ギヤツプ形
成面に用いる構成である。
That is, the winding groove 2 is provided in the center, and of the two surface portions divided into front and rear portions, the surface portion 3 is used as the front gap forming surface, and the other surface portion 4 is used as the rear gap forming surface.

ここで前記、補助コア1bについて重要なこと
は、面部3を構成する斜線表示部分7と面部4か
ら面部3近傍までの部分8によつて構成され、そ
の部分8がフエライトの場合は部分7にガラスを
用い、前記フエライトにガラスを融着固着して形
成されている。
Here, what is important about the auxiliary core 1b is that it is composed of the diagonally shaded portion 7 that constitutes the surface portion 3 and the portion 8 from the surface portion 4 to the vicinity of the surface portion 3, and if the portion 8 is made of ferrite, the portion 7 It is formed using glass by fusion-bonding the glass to the ferrite.

更に該フエライト部分8は、その先端部がヘツ
ド能率を高める点から面部3の近傍に延びる先細
形状をなし、かつ、ヘツド形状の点から部分7と
角度θを有する形状とする。
Furthermore, the ferrite portion 8 has a tapered shape such that its tip extends near the surface portion 3 in order to improve the head efficiency, and has an angle θ with respect to the portion 7 from the point of view of the head shape.

第2図は前記コア1aと1bを重ね合わせ1体
化した状態のコア半体1を示すものである。重ね
合わせは樹脂あるいはガラスなどの極く薄い層を
形成し、加熱接着により実施できる。
FIG. 2 shows the core half 1 in which the cores 1a and 1b are stacked and integrated into one body. Lamination can be carried out by forming extremely thin layers of resin or glass and heat bonding.

即ち、このコア半体1は、ヘツドトラツク幅を
構成する厚みTを有したセンダストコア部分1a
の側面に磁気回路能率を高める形状と厚みを有し
たフエライトコア部分が前記センダストコア部分
1aの前部ギヤツプ形成面3の近傍に配設し、か
つ、前記フエライトコア1b先端に設けたガラス
部分7の厚みT′によりギヤツプ形成面3の面積
を増した構造である。
That is, this core half 1 has a sendust core portion 1a having a thickness T constituting the head track width.
A ferrite core portion having a shape and thickness that enhances magnetic circuit efficiency is disposed on the side surface near the front gap forming surface 3 of the sendust core portion 1a, and a glass portion 7 provided at the tip of the ferrite core 1b. This is a structure in which the area of the gap forming surface 3 is increased by the thickness T'.

このように形成された2個のコア半体1,1′
は前記コア半体のギヤツプ面を境に対称なもので
ある。
The two core halves 1, 1' thus formed
are symmetrical with respect to the gap plane of the core half.

第3図は第2図に示す2個のコア半体1,1′
を用い、その前後ギヤツプ形成面3および4を平
面かつ鏡面にポリツシング加工を施し、更にガラ
スあるいはチタンなど適当なる非磁性物質を必要
なギヤツプ幅に応じた厚みで存在させた後、左右
コア半体1と1′のセンダストコア部分1a,1
a′およびフエライトコア部分1bと1b′を対向合
体する事により、複合コアを用いた磁気ヘツド体
2を構成するもので、このようなヘツド体2はそ
のテープ摺動するヘツド前面からも明らかな如
く、ヘツドトラツク幅部TWをセンダスト単体で
構成しながらも、テープ摺動面積をガラス部分7
を含めたコア厚さCWで構成し、かつ、ヘツドギ
ヤツプ深さGDより下端のフエライトを積層せし
めたコア部分に巻線9を施した構造としたもので
ある。
Figure 3 shows the two core halves 1, 1' shown in Figure 2.
After polishing the front and rear gap forming surfaces 3 and 4 to a flat and mirror surface, and adding a suitable non-magnetic material such as glass or titanium to a thickness corresponding to the required gap width, the left and right core halves are assembled. 1 and 1' sendust core parts 1a, 1
A' and ferrite core portions 1b and 1b' are combined to face each other to form a magnetic head body 2 using a composite core.Such a head body 2 is clearly visible from the front surface of the head on which the tape slides. As shown, although the head track width part TW is made of Sendust alone, the tape sliding area is reduced to the glass part 7.
It has a structure in which the core has a core thickness of CW including the head gap depth GD, and a winding 9 is applied to the core portion where ferrite is laminated at the lower end than the head gap depth GD.

以上の如き本考案による磁気ヘツドは金属コア
部分による記録特性の向上と、フエライト部分複
合による高周波数特性の向上により、飽和がな
く、高周波特性の優れた磁気ヘツドが得られる。
The magnetic head according to the present invention as described above has improved recording characteristics due to the metal core portion and improved high frequency characteristics due to the composite ferrite portion, thereby providing a magnetic head that is free from saturation and has excellent high frequency characteristics.

また、ガラス部分によつて、コア半体の前後ギ
ヤツプ形成面積を増加させることにより、ギヤツ
プ形成面の平面精度の向上がはかれ、更に前記ギ
ヤツプ形成面積の増加によるセンダストコアギヤ
ツプ面応力集中をさけることが出来安定ギヤツプ
実現とヘツド特性の向上が認められるとともに、
耐摩耗特性も向上するものである。
In addition, by increasing the front and rear gap forming areas of the core halves by the glass portion, the planar accuracy of the gap forming surfaces is improved, and stress concentration on the sendust core gap surface due to the increase in the gap forming area is achieved. It has been recognized that it has been possible to avoid this problem, achieve a stable gap, and improve head characteristics.
The wear resistance properties are also improved.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第1図
はコア半体を形成する主コアと補助コアとを示す
側面図、第2図は一対のコア半体を示す斜視図、
第3図は本考案の一実施例を示す斜視図である。 1a……主コア、1b……補助コア、3……前
ギヤツプ形成面、4……後ギヤツプ形成面、7…
…非磁性材、8……フエライト材。
The drawings show one embodiment of the present invention; FIG. 1 is a side view showing a main core and an auxiliary core forming core halves, and FIG. 2 is a perspective view showing a pair of core halves.
FIG. 3 is a perspective view showing an embodiment of the present invention. 1a... Main core, 1b... Auxiliary core, 3... Front gap forming surface, 4... Rear gap forming surface, 7...
...Nonmagnetic material, 8...Ferrite material.

Claims (1)

【実用新案登録請求の範囲】 (1) それぞれ前ギヤツプ形成面と後ギヤツプ形成
面とを有する一対のコア半体を、前記前ギヤツ
プ形成面どうし、後ギヤツプ形成面どうしを接
合して磁気ヘツドコアとした磁気ヘツドにおい
て、前記コア半体を、飽和磁束密度の高い材料
よりなり所定のトラツク巾の厚さを有する主コ
ア部と前記前ギヤツプ形成面の近傍が非磁性材
料で構成され残部が電気比抵抗の大なる磁性材
で構成された補助コアとを接合して構成したこ
とを特徴とする磁気ヘツド。 (2) 補助コアの磁性材料部の形状が前ギヤツプ形
成面に向つて順次先細形状になつていることを
特徴とする実用新案登録請求の範囲第1項に記
載の磁気ヘツド。
[Claims for Utility Model Registration] (1) A pair of core halves each having a front gap-forming surface and a rear gap-forming surface are joined together with the front gap-forming surfaces and the rear gap-forming surfaces to form a magnetic head core. In the magnetic head, the core half is made of a material with a high saturation magnetic flux density and has a thickness of a predetermined track width, a main core part near the front gap forming surface is made of a non-magnetic material, and the remaining part is made of a material with an electric ratio. A magnetic head characterized in that it is constructed by joining an auxiliary core made of a magnetic material with high resistance. (2) The magnetic head according to claim 1, wherein the shape of the magnetic material portion of the auxiliary core is gradually tapered toward the front gap forming surface.
JP1980071879U 1980-05-23 1980-05-23 Expired JPS6341610Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1980071879U JPS6341610Y2 (en) 1980-05-23 1980-05-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1980071879U JPS6341610Y2 (en) 1980-05-23 1980-05-23

Publications (2)

Publication Number Publication Date
JPS56174116U JPS56174116U (en) 1981-12-22
JPS6341610Y2 true JPS6341610Y2 (en) 1988-11-01

Family

ID=29665510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1980071879U Expired JPS6341610Y2 (en) 1980-05-23 1980-05-23

Country Status (1)

Country Link
JP (1) JPS6341610Y2 (en)

Also Published As

Publication number Publication date
JPS56174116U (en) 1981-12-22

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