JPH0333930Y2 - - Google Patents
Info
- Publication number
- JPH0333930Y2 JPH0333930Y2 JP12667685U JP12667685U JPH0333930Y2 JP H0333930 Y2 JPH0333930 Y2 JP H0333930Y2 JP 12667685 U JP12667685 U JP 12667685U JP 12667685 U JP12667685 U JP 12667685U JP H0333930 Y2 JPH0333930 Y2 JP H0333930Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic material
- core
- main core
- winding groove
- 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 20
- 238000004804 winding Methods 0.000 claims description 13
- 230000000994 depressogenic effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 9
- 229910000859 α-Fe Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-IGMARMGPSA-N Carbon-12 Chemical compound [12C] OKTJSMMVPCPJKN-IGMARMGPSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 125000006850 spacer group Chemical group 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
本考案は電子スチルカメラ等に用いるインライ
ン型の磁気ヘツドに関するものである。[Detailed description of the invention] (a) Industrial application field The present invention relates to an in-line magnetic head used in electronic still cameras and the like.
(ロ) 従来の技術
斯種磁気ヘツドの構造は特願昭59−4108号に開
示されている。即ち、この磁気ヘツドは第４図、
第５図に示すように磁気的なシールド板１を挾ん
で、一対のヘツドH1，H2がインライン型に配さ
れており、その各ヘツドはセンダスト材等の金属
磁性材料よりなる主コア２と、補助コア３とから
構成され、更に補助コアはガラス等の非磁性材部
４と、フエライト等の酸化物磁性材部５とからな
る。補助コア３は巻線溝６と、そこに巻装された
コイル７とからなる。主コア２はその前後方向の
長さが補助コア３に比しかなり短かい。尚、作動
ギヤツプG1，G2のトラツク幅は60μｍ程度であ
り、シールド板１の厚みは40μｍ程度である。ま
た、図において、８はヘツドH1，H2の後部とシ
ールド板１との間に挿入配置された非磁性材料よ
りなるスペーサである。斯る磁気ヘツドにおい
て、実用的であるための必要条件として次の３つ
が挙げられる。(b) Prior Art The structure of this type of magnetic head is disclosed in Japanese Patent Application No. 1983-4108. That is, this magnetic head is shown in FIG.
As shown in FIG. 5, a pair of heads H 1 and H 2 are arranged in-line with a magnetic shield plate 1 in between, and each head is connected to a main core 2 made of a metal magnetic material such as sendust material. and an auxiliary core 3, and the auxiliary core further comprises a non-magnetic material portion 4 such as glass, and an oxide magnetic material portion 5 such as ferrite. The auxiliary core 3 consists of a winding groove 6 and a coil 7 wound therein. The length of the main core 2 in the longitudinal direction is considerably shorter than that of the auxiliary core 3. The track width of the working gaps G 1 and G 2 is about 60 μm, and the thickness of the shield plate 1 is about 40 μm. Further, in the figure, reference numeral 8 denotes a spacer made of a non-magnetic material inserted between the rear portions of the heads H 1 and H 2 and the shield plate 1. The following three conditions are necessary for such a magnetic head to be practical.
ヘツド効率を上げるためにヘツド内での磁路
をできるだけ短かくしなければならないので、
巻線溝６をできるだけ小さく構成すること。 In order to increase head efficiency, the magnetic path within the head must be made as short as possible.
To configure the winding groove 6 to be as small as possible.
主コア２と補助コア３との接触磁気抵抗を軽
減させるために接合面積は大きくとらなければ
ならない。 In order to reduce the contact magnetic resistance between the main core 2 and the auxiliary core 3, the joint area must be large.
主コア２とコイル７は接触すると、その強い
機械的圧力により両者間で電気的なシヨートが
生じ、その結果としてＳ／Ｎ比が著しく劣化す
るので主コア２とコイル７の直接的接触が防げ
るような構造。 When the main core 2 and the coil 7 come into contact, the strong mechanical pressure causes an electrical short between them, resulting in a significant deterioration of the S/N ratio, so direct contact between the main core 2 and the coil 7 can be prevented. structure like that.
(ハ) 考案が解決しようとする問題点
前記第４図及び第５図の実施例では、接触磁気
抵抗を軽減させるために主コア２と、補助コア３
の接合面積を増大させると、主コア２の下端が補
助コア３に装着されたコイルに接触しコイルとの
電気的シヨートを誘発する。また、補助コア３に
おいて異種材料である磁性体部５と非磁性体部４
との接着面積が小さいため機械的強度が不足し、
信頼性に乏しい。(c) Problems to be solved by the invention In the embodiments shown in FIGS. 4 and 5, the main core 2 and the auxiliary core 3 are used to reduce the contact magnetic resistance.
When the joint area of the main core 2 is increased, the lower end of the main core 2 comes into contact with the coil attached to the auxiliary core 3, inducing an electrical shot with the coil. In addition, in the auxiliary core 3, a magnetic part 5 and a non-magnetic part 4 made of different materials are provided.
Due to the small adhesion area, the mechanical strength is insufficient.
Poor reliability.
本考案は、これらの問題を解決する。 The present invention solves these problems.
(ニ) 問題点を解決するための手段
本考案では補助コアの巻線溝に、その非磁性材
部を落ち込ませ、その落ち込み部によつて形成さ
れる前記巻線溝の上壁面が主コアの下端と同等、
若しくはそれより下に位置するようにした。(d) Means for solving the problem In the present invention, the non-magnetic material part is depressed into the winding groove of the auxiliary core, and the upper wall surface of the winding groove formed by the depressed part is connected to the main core. equivalent to the lower end of
Or it was positioned lower than that.
(ホ) 作用
主コアとコイルとの接触がなくなる。従つて主
コアとコイル間の電気的シヨート、およびコイル
の絶縁被膜の損傷によるコイル間のシヨートによ
るインダクタンスの減少といつた問題が生じな
い。補助コアにおいて、異種材料である磁性体部
と非磁性体部との接触面積を増大できる。(E) Effect The contact between the main core and the coil is eliminated. Therefore, problems such as electrical shorts between the main core and the coils and reductions in inductance due to shorts between the coils due to damage to the insulating coating of the coils do not occur. In the auxiliary core, the contact area between the magnetic part and the non-magnetic part, which are different materials, can be increased.
(ヘ) 実施例
第１図は本考案を実施した磁気ヘツドのうち、
ヘツドH1部分のみを示す。本考案では、補助コ
ア３の酸化物磁性材部５の巻線溝６に対し、ガラ
ス等の非磁性材部４を落ち込ませ、その落ち込み
部４ａによつて形成される巻線溝６の上壁面９が
主コア２の下端１０と同等、又はそれより下に位
置するようにしている。(f) Example Figure 1 shows a magnetic head in which the present invention was implemented.
Only part of head H is shown. In the present invention, the non-magnetic material part 4 such as glass is depressed into the winding groove 6 of the oxide magnetic material part 5 of the auxiliary core 3, and the non-magnetic material part 4, such as glass, is depressed above the winding groove 6 formed by the depressed part 4a. The wall surface 9 is positioned equal to or lower than the lower end 10 of the main core 2.
第２図は本考案における磁気ヘツドの補助コア
３の作成方法を示したものである。まず、柱状の
フエライトのブロツク１１にａで示すようなコイ
ルを巻くための溝加工６′を行なう。次にｂで示
すように溝６′の中へ、カーボン１２を充填する。
さらに非磁性材４として、ガラス４′を、ｃ図で
示したようにフエライトのブロツク１１上に位置
させる。このときには、フエライトブロツクの溝
の中へ充填されたカーボン１２と、ガラス４′の
間には間〓があるが、600℃前後の温度で熱処理
を行なうことによつて、フエライトブロツク上に
のせた非磁性ガラス４′が溶融し、溝の中へ一部
流入し、ｄで示すように溝内部への非磁性ガラス
の落とし込みが完了する。このブロツクを所定の
厚さにスライスし、その後溝内部に充填されてい
たカーボン１２を除去すると、本考案における磁
気ヘツドの補助コア３を得ることができる。ここ
で、溝内部への充填材としてカーボンを選択した
理由としては、カーボンは非磁性材としてのガラ
ス及び磁性材としてのフエライトに対して難溶着
性を示すからである。またカーボンはｄの状態か
ら所定の厚さにスライスされた後除去するわけで
あるが、非常に除去しやすいという利点も備えて
いる。 FIG. 2 shows a method of making the auxiliary core 3 of the magnetic head according to the present invention. First, a groove 6' is formed in a columnar ferrite block 11 for winding a coil as shown by a. Next, as shown by b, carbon 12 is filled into the groove 6'.
Further, as the non-magnetic material 4, glass 4' is placed on the ferrite block 11 as shown in Figure c. At this time, there is a gap between the carbon 12 filled into the groove of the ferrite block and the glass 4', but by heat treatment at a temperature of around 600°C, the carbon 12 placed on the ferrite block can be removed. The non-magnetic glass 4' is melted and partially flows into the groove, completing the dropping of the non-magnetic glass into the groove as shown by d. By slicing this block to a predetermined thickness and then removing the carbon 12 filled in the grooves, the auxiliary core 3 of the magnetic head of the present invention can be obtained. Here, the reason why carbon was selected as the filler inside the groove is that carbon exhibits poor adhesion to glass as a non-magnetic material and ferrite as a magnetic material. Further, carbon is removed after being sliced to a predetermined thickness from the state d, and it also has the advantage of being very easy to remove.
尚前記作成方法の応用として第３図の如く巻線
溝６の周囲にガラス４が施された磁気ヘツドを作
成することもできる。 Incidentally, as an application of the above manufacturing method, it is also possible to create a magnetic head in which a glass 4 is provided around the winding groove 6 as shown in FIG.
(ト) 考案の効果
主コア２とコイル７との接触がなくなるので、
それらの間の電気的シヨートが生じない。補助コ
ア３において、異種材料である磁性材部５と非磁
性材部４との接触面積が増加するため補助コア３
の機械的強度が増す。(g) Effect of the invention Since the contact between the main core 2 and the coil 7 is eliminated,
No electrical shorts occur between them. In the auxiliary core 3, since the contact area between the magnetic material part 5 and the non-magnetic material part 4, which are different materials, increases, the auxiliary core 3
mechanical strength increases.
第１図は本考案を実施した磁気ヘツドの要部平
面図であり、第２図はその製造工程を示す図であ
る。第３図は本考案の他の実施例を示す図であ
る。第４図は従来の磁気ヘツドの斜視図であり、
第５図はその斜視図である。
１……シールド板、２……主コア、３……補助
コア、４……非磁性材部、４ａ……落ち込み部、
５……酸化物磁性材部、６……巻線溝、９……上
壁面、H1，H2……第１、第２ヘツド。
FIG. 1 is a plan view of the main part of a magnetic head embodying the present invention, and FIG. 2 is a diagram showing the manufacturing process thereof. FIG. 3 is a diagram showing another embodiment of the present invention. FIG. 4 is a perspective view of a conventional magnetic head.
FIG. 5 is a perspective view thereof. DESCRIPTION OF SYMBOLS 1... Shield plate, 2... Main core, 3... Auxiliary core, 4... Non-magnetic material part, 4a... Recessed part,
5... Oxide magnetic material portion, 6... Winding groove, 9... Top wall surface, H 1 , H 2 ... First and second heads.
Claims (1)
がインライン配置され、且つその各々のヘツドが
前記シールド板に接合する金属磁性材料よりなる
主コアと前記主コアの他面に配された補助コアと
からなり、前記主コアの前後方向の長さは前記補
助コアのそれに比し短かく、前記補助コアは前方
に配された非磁性材部と後方に向けて配された酸
化物磁性材部とよりなると共に巻線溝を備えるイ
ンライン型の磁気ヘツドにおいて、 前記非磁性材部が前記巻線溝内に落ち込んでお
り、その落ち込み部によつて形成される前記巻線
溝の上壁面が前記主コアの下端と同等、若しくは
それより下に位置することを特徴とする磁気ヘツ
ド。[Claims for Utility Model Registration] A main core made of a metal magnetic material, in which first and second heads are arranged in-line with a magnetic shield plate in between, and each head is bonded to the shield plate, and the main core and an auxiliary core placed on the other side, the length of the main core in the front-rear direction is shorter than that of the auxiliary core, and the auxiliary core has a non-magnetic material part placed in the front and a non-magnetic material part facing the rear. In an in-line magnetic head comprising an oxide magnetic material portion disposed in the winding groove and having a winding groove, the non-magnetic material portion is depressed into the winding groove, and the magnetic head is formed by the depressed portion. A magnetic head characterized in that the upper wall surface of the winding groove is located at the same level as or below the lower end of the main core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12667685U JPH0333930Y2 (en) | 1985-08-20 | 1985-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12667685U JPH0333930Y2 (en) | 1985-08-20 | 1985-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6236414U JPS6236414U (en) | 1987-03-04 |
| JPH0333930Y2 true JPH0333930Y2 (en) | 1991-07-18 |
Family
ID=31020706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12667685U Expired JPH0333930Y2 (en) | 1985-08-20 | 1985-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333930Y2 (en) |
-
1985
- 1985-08-20 JP JP12667685U patent/JPH0333930Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6236414U (en) | 1987-03-04 |
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