JPS62266715A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS62266715A JPS62266715A JP10850786A JP10850786A JPS62266715A JP S62266715 A JPS62266715 A JP S62266715A JP 10850786 A JP10850786 A JP 10850786A JP 10850786 A JP10850786 A JP 10850786A JP S62266715 A JPS62266715 A JP S62266715A
- Authority
- JP
- Japan
- Prior art keywords
- working gap
- groove
- blocks
- winding groove
- core
- 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
- 238000004804 winding Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000011521 glass Substances 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
- G11B5/1335—Assembling or shaping of elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/23—Gap features
- G11B5/232—Manufacture of gap
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、磁気ヘッドの改良に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in magnetic heads.
従来、磁気ヘッドは、第９図に示すごとく、フェライト
等からなるコアブロック１ａと１ｂとを、スペーサー２
を介した状態で所定の間隔旦だけ離して突き合わせた後
、ガラス棒３を、コアブロックｌａ、ｌｂ間にセットし
た状態で加熱し、その後、１１やかに冷却して、第１１
図に示すごとく、合するようにしている。すなわち、従
来、前記した磁気ヘッドの製作に際しては、作動ギャッ
プ４の間隔Ｑを保持すべく、コアブロック１ａと１ｂと
を、第１０図に示すごとく、スペーサー２を介した状態
で治具７にセットし、ネジ８で加圧締結１ｂとを、外周
刃式あるいは内周刃式スライサーで切断して、第１２図
に符号１で示すヘッドチップを得るようにしている。Conventionally, a magnetic head, as shown in FIG.
The glass rod 3 is heated while being set between the core blocks la and lb, and then cooled rapidly to form a
As shown in the figure, it is made to match. That is, conventionally, when manufacturing the magnetic head described above, in order to maintain the distance Q of the working gap 4, the core blocks 1a and 1b are placed in a jig 7 with a spacer 2 in between, as shown in FIG. The head chip is set, and the pressurized fastening 1b is cut with a screw 8 using an outer peripheral blade type or inner peripheral blade type slicer to obtain a head chip shown by reference numeral 1 in FIG. 12.
しかして、従来、第１２図に符号１で示すヘッドチップ
をブロックコアから切り出すに際しては、当該ヘッドチ
ップ１の強度を増してその破損を防止すべく、巻線溝５
の作動ギャップ側壁面を、作動ギャップ面に対して傾斜
（すなわち、第１３図のθ；１５〜７５８）させる構成
を採用するようにしている。Conventionally, when cutting out a head chip indicated by reference numeral 1 in FIG. 12 from a block core, winding grooves are
A configuration is adopted in which the side wall surface of the working gap is inclined with respect to the working gap surface (that is, θ in FIG. 13: 15 to 758).
なお、磁気ヘッドの作動ギャップに関連する先行技術と
しては、特開昭５８−６４６１８号公報を挙げることが
できる。Incidentally, as a prior art related to the working gap of a magnetic head, Japanese Patent Laid-Open No. 58-64618 can be mentioned.
ところで、従来形磁気ヘッドにあっては、既述のごとく
１巻ＩＩＡ溝５の作動ギャップ側壁面を１作動ギャップ
面に対して傾斜させる構成を採用することにより、ブロ
ックコアからヘッドチップ１を切り出すに際し、当該ヘ
ッドチップ１の強度を増して、その破損を防止すること
ができるが、反面。By the way, in the conventional magnetic head, as described above, the head chip 1 is cut out from the block core by adopting a configuration in which the working gap side wall surface of the 1-turn IIA groove 5 is inclined with respect to the 1-working gap surface. At this time, it is possible to increase the strength of the head chip 1 and prevent its damage, but on the other hand.
コアブロック１ａと１ｂとを治具７にセットし、ネジ８
で加圧締結するに際し、ネジ８による加圧力がブロック
コアの作動ギャップ面全体に均一に作用せず、これが原
因となって、作動ギャップ長は、ギャップ深さ方向に対
して所定間隔Ωを保持することかて゛きないという問題
があった。これをさらに詳述すると、第１４図は第１２
図に示す従来形へラドチップ１のギャップ長測定図であ
る。Set the core blocks 1a and 1b on the jig 7, and tighten the screws 8.
When fastening with pressure, the pressurizing force by the screw 8 does not act uniformly on the entire working gap surface of the block core, and as a result, the working gap length is maintained at a predetermined interval Ω in the gap depth direction. The problem was that there was nothing to do. To explain this in more detail, Figure 14 shows the 12th
It is a gap length measurement diagram of the conventional Herad tip 1 shown in the figure.
第１４図に示すギャップ長測定の結果、第１３図の距離
Ａ部Ｂ間（ギャップ深さ方向の距ＭＡ−Ｂ間）において
、′Ｘ符号Ｂでへ示す位置の作動ギャップ長は、所定の
間隔ａを保持しているものの、符号Ａで示す位置の作動
ギャップ長は間隔αを保持していない。As a result of the gap length measurement shown in FIG. 14, the working gap length at the position indicated by 'X symbol B between distances A and B in FIG. Although the distance a is maintained, the working gap length at the position indicated by the symbol A does not maintain the distance α.
本発明者等は、従来形へラドチップ１に生じる作動ギャ
ップ長のバラツキについて１種々検討をおこなったとこ
ろ、その原因は、巻線溝５の作動ギャップ側の壁面が作
動ギャップ面に対して傾斜しているため、すなわち、コ
アブロック１ａと１ｂとを治具７にセットし、ネジ８で
加圧締結するに際し、巻線溝５の近傍に加わる力は、当
該巻線溝５の作動ギャップ側傾斜壁面端部であるＡ部に
集中するためであることを見い出した。第１５図は従来
形ブロックコア製作時における作動ギャップ面各部の応
力分布測定図である。すなわち、本発明者等は、第１３
１！Ｉの距離Ａ部Ｂ間の加圧分布につき、有限要素法に
より応力解析をおこなったところ、第１５図に示すごと
く１作動ギヤツブ深さ方向に対する加圧分布は不均一と
なり、第１３図Ａに示す部分の加圧が極端に大きくなる
ことを見い出した。The inventors of the present invention have conducted various studies on the variation in working gap length that occurs in the conventional Herad tip 1, and have found that the cause is that the wall surface on the working gap side of the winding groove 5 is inclined with respect to the working gap surface. That is, when the core blocks 1a and 1b are set in the jig 7 and fastened together using the screws 8, the force applied near the winding groove 5 is applied to the working gap side slope of the winding groove 5. It has been found that this is because the particles are concentrated in section A, which is the edge of the wall surface. FIG. 15 is a stress distribution measurement diagram of various parts of the working gap surface during production of a conventional block core. That is, the present inventors
1! When stress analysis was performed using the finite element method for the pressure distribution between distance A and part B of distance I, the pressure distribution in the depth direction of one working gear was uneven, as shown in Figure 15, and as shown in Figure 13A. It was discovered that the pressure in the area shown becomes extremely large.
ところで、近年のように、記録密度の高密化をはかるべ
く１作動ギャップ４を狭くした磁気ヘッドにあって１作
動ギャップ長の寸法精度を高精度化することは非常に重
要であり１作動ギャップ長の寸法精度が低下すると、１
１品の製造歩留りが悪くなる。By the way, in recent years, it is very important to improve the dimensional accuracy of the 1 working gap length in magnetic heads where the 1 working gap 4 is narrowed in order to increase the recording density. When the dimensional accuracy of
The manufacturing yield of one item becomes poor.
本発明は、前記した従来技術の問題点を解決すべく検討
の結果なされたものであって、その目的とするところは
、作動ギャップ長の寸法精度を従来よりも高精度化して
、記録密度の高密度化と製品の製造歩留向上化とを同時
に達成することのできる、改良された磁気ヘッドを提供
しようとするものである。The present invention was made as a result of studies to solve the problems of the prior art described above, and its purpose is to improve the dimensional accuracy of the working gap length than before, and to increase the recording density. The present invention aims to provide an improved magnetic head that can simultaneously achieve higher density and improved product manufacturing yield.
前記目的を達成するため１本発明は０作動ギャップ形成
のために突合せ結合される２個のコアブロックのうち、
少なくともその一方のコアブロックに巻線溝を有し、か
つ前記巻線溝の作動ギャップ側壁面が作動ギャップ面に
対し傾斜している構造の磁気ヘッドにおいて、前記巻線
溝の作動ギャップ側傾斜壁面に応力逃げ溝を設けたこと
を特徴とするものである。To achieve the above object, the present invention provides two core blocks that are butt-coupled to form a zero working gap.
In a magnetic head having a structure in which at least one of the core blocks has a winding groove, and the working gap side wall surface of the winding groove is inclined with respect to the working gap surface, the working gap side inclined wall surface of the winding groove. It is characterized by having a stress relief groove provided in the.
しかして１本発明は、既述のごとく、巻線溝の作動ギャ
ップ側傾斜壁面に応力逃げ溝を形成したことにより、作
動ギャップ形成のために２個のコアブロックを治具にセ
ットした場合、巻線溝の近傍において、加圧ネジによる
圧力は、前記応力逃げ溝に吸収され、巻線溝の作動ギャ
ップ側傾斜壁面端部における加圧集中を防止することが
できる。As described above, the present invention has a stress relief groove formed in the inclined wall surface on the working gap side of the winding groove, so that when two core blocks are set in a jig for forming the working gap, In the vicinity of the winding groove, the pressure exerted by the pressure screw is absorbed by the stress relief groove, thereby preventing concentration of pressure at the end of the inclined wall surface of the winding groove on the operating gap side.
以下、本発明を、第１図〜第６図の一実施例にもとづい
て説明すると、第１図はブロックコアの傾斜図、第２図
および第３図はブロックコアの寸法関係を説明する正面
図、第４図はブロックコアを治具にセットした状態の正
面図、第５１！ｌはブロックコアからヘッドチップを切
り出した状態の斜視図、第６図は第５図に示すヘッドチ
ップの作動ギャップ長測定図である。Hereinafter, the present invention will be explained based on an embodiment shown in FIGS. 1 to 6. FIG. 1 is an inclined view of the block core, and FIGS. 2 and 3 are front views explaining the dimensional relationship of the block core. Figure 4 is a front view of the block core set in the jig, Figure 51! 1 is a perspective view of the head chip cut out from the block core, and FIG. 6 is a measurement diagram of the working gap length of the head chip shown in FIG. 5.
ブロックコアの寸法関係を示す第２図において。In FIG. 2 showing the dimensional relationship of the block cores.
Ｍ ｎ Ｚ ｎフェライトからなるコアブロック１ａお
よび１ｂのうち、コアブロック１ｂには、Ｌｘ ＝７０
０μｍ、Ｌｚ＝５００μｍ、θ＝５５＠の巻線溝５が形
成されており、さらにコアブロック１ｂには、外周刃式
スライサーにより、Ｌａ＝６００ｐｍの位置に、Ｌｓ＝
１００μｍ、Ｌ７＝＝２００μｍの方形々状を有する応
力逃げ溝６が形成されている。しかして、前記コアブロ
ック１ａと１ｂとを突合せ結合するに際しては、コアブ
ロック１ａと１ｂとの間に、チタン箔からなるｆｌ＝１
μｍのスペーサー２を差し込み、第４図に示すように、
コアブロック１ａと１ｂとの間にガラス捧３をセットし
た状態で加熱炉で加熱し、その後。Of the core blocks 1a and 1b made of M n Z n ferrite, core block 1b has Lx = 70
A winding groove 5 of 0 μm, Lz = 500 μm, θ = 55@ is formed in the core block 1b, and a peripheral blade slicer is used to form a winding groove 5 at a position of La = 600 pm, Ls =
A stress relief groove 6 having a rectangular shape of 100 μm and L7=200 μm is formed. Therefore, when the core blocks 1a and 1b are butt-bonded, fl=1 made of titanium foil is placed between the core blocks 1a and 1b.
Insert the μm spacer 2, as shown in Figure 4.
The glass slab 3 is set between the core blocks 1a and 1b and then heated in a heating furnace.
緩やかに冷却して、第２図に符号Ｑで示す間隔の作動ギ
ャップ４を形成すると同時に、コアブロック１ａと１ｂ
とを溶融ガラス３′で接合する。そして、その後、溶融
ガラス３′で接合されたコアブロック１ａと１ｂとを、
内周刃式スライサーで切断して、第５図に符号１で示す
ヘッドチップを得るようにしており、前記のごとくして
得られたヘッドチップ１は、その両切断面を平面研削な
らびにラッピング（微細な砥粒で研摩）等の方法によっ
て表面仕上げされる。At the same time, the core blocks 1a and 1b are slowly cooled to form a working gap 4 having a spacing shown by reference numeral Q in FIG.
and are joined with molten glass 3'. Then, the core blocks 1a and 1b joined with the molten glass 3' are
The head chip shown by reference numeral 1 in FIG. 5 is obtained by cutting with an internal blade type slicer. Both cut surfaces of the head chip 1 obtained as described above are subjected to surface grinding and lapping ( The surface is finished by methods such as polishing with fine abrasive grains.
第６図は第５図に示すヘッドチップ１の作動ギャップ長
測定図である。第６図に示すギャップ長測定の結果、第
５図に符号Ａ−Ｂで示す距離間の作動ギャップ長は、ギ
ャップ深さ方向全域にわたつて、はぼ所定の間隔Ａ＝１
μｍを保持しており。FIG. 6 is a measurement diagram of the working gap length of the head chip 1 shown in FIG. As a result of the gap length measurement shown in FIG. 6, the working gap length between the distances indicated by symbols A-B in FIG.
It holds μm.
本発明によれば、作動ギャップ長の寸法精度を従来より
も高精度化することができる。According to the present invention, the dimensional accuracy of the working gap length can be made higher than ever before.
第７図および第８図はそれぞれ本発明の他の実施例を示
し、第７図の実施例においては１巻線溝５の作動ギャッ
プ側傾斜壁面に設けた応力逃げ溝６の形状を半弧状とし
た場合を示した。また、第８図の実施例においては、巻
線溝５の作動ギャップ傾斜壁面に設けた応力逃げ溝６の
形状を、山形に尖らせた多角形々状とした場合を例示し
た６なお１本発明において、応力逃げ溝６は、巻線溝５
の作動ギャップ側傾斜壁に設けられるものであるが、こ
の応力逃げ溝６の形成位置は１図示実施例に示すごとく
作動ギャップ側傾斜壁面の中央に対し１作動ギャップ４
の反対側に設けられていることが望ましい、その理由は
、応力逃げ溝６の形成位置が１作動ギャップ側傾斜壁面
の中央に対して作動ギャップ側に設けられていると１巻
線溝５の作動ギャップ側傾斜壁面端部であるＡ部の加圧
集中防止効果が小さくなる傾向を示すためである。7 and 8 respectively show other embodiments of the present invention, and in the embodiment shown in FIG. The case is shown below. In addition, in the embodiment shown in FIG. 8, the shape of the stress relief groove 6 provided on the inclined wall surface of the working gap of the winding groove 5 is a polygonal shape with a pointed chevron. In the invention, the stress relief groove 6 is the same as the winding groove 5.
The stress relief groove 6 is provided on the inclined wall on the working gap side, and the stress relief groove 6 is formed at a position 1 working gap 4 relative to the center of the working gap side inclined wall surface as shown in the illustrated embodiment.
The reason for this is that if the stress relief groove 6 is formed on the working gap side with respect to the center of the inclined wall surface on the first working gap side, the stress relief groove 6 is formed on the opposite side of the first winding groove 5 This is because the effect of preventing pressure concentration at the section A, which is the end of the inclined wall surface on the side of the working gap, tends to be reduced.
また、本発明においては、巻線溝５の作動ギャップ側傾
斜壁面に形成される応力逃げ溝６が１図示実施例に示す
ごとき方形その他の多角形々状、あるいは円弧状、さら
にはこれらに代わる他の形状であっても、第３図に示す
ごとく、応力逃げ溝６の最大溝深さＬ６が１作動ギャッ
プ４の内端Ａから作動ギャップ面に直交する仮想面と巻
線溝底面部の作動ギャップ側傾斜壁面端部Ｃとを結ぶ距
ｆｉＬ＋の１／４から１／２であることが望ましい。Further, in the present invention, the stress relief groove 6 formed on the inclined wall surface on the working gap side of the winding groove 5 may have a rectangular or other polygonal shape as shown in the embodiment shown in FIG. Even with other shapes, as shown in FIG. 3, the maximum groove depth L6 of the stress relief groove 6 is between the inner end A of the working gap 4 and the imaginary plane perpendicular to the working gap surface and the bottom surface of the winding groove. It is desirable that the distance fiL+ is between 1/4 and 1/2 of the distance fiL+ connecting the working gap side inclined wall surface end C.
その理由は前記寸法ＬＩＳがＬ４の１／４以下であると
、巻線７ｆ！ｔ５の作動ギャップ側傾斜壁面端部である
Ａ部の加圧集中防止効果が小さくなる傾向を示し、他方
、前記寸法りもがＬ４の１／２以上の場合は、コアブロ
ック１ｂの機械的強度が低下する傾向を示すためである
６
さらに１図示実施例においては、２片のフェライトコア
ブロックｌａ、ｌｂの接合にガラス捧３を使用する場合
について例示したが、ガラス捧３に代えて、他の接着剤
を用いるようにしてもよい。The reason is that when the dimension LIS is less than 1/4 of L4, the winding 7f! The effect of preventing pressure concentration at part A, which is the end of the inclined wall on the operating gap side at t5, tends to decrease. On the other hand, if the dimension is 1/2 or more of L4, the mechanical strength of the core block 1b decreases. 6 Furthermore, in the illustrated embodiment, a case where a glass slab 3 is used to join two pieces of ferrite core blocks la and lb is illustrated, but instead of the glass slab 3, other Alternatively, an adhesive may be used.
本発明は以上のごときであり、図示実施例の説明からも
明らかなように１本発明によれば１作動ギヤツブ畏の寸
法精度を従来よりも高精度化して。The present invention is as described above, and as is clear from the description of the illustrated embodiments, according to the present invention, the dimensional accuracy of the first operating gear is made higher than that of the conventional one.
記録密度の高密度化と製品の製造歩留向上化とを同時に
達成することのできる。改良された磁気ヘッドを得るこ
とができる。It is possible to simultaneously achieve higher recording density and improved product manufacturing yield. An improved magnetic head can be obtained.
第１図、第２図、第３図、第４図、第５図、第６図は本
発明に係る磁気ヘッドの一実施例を示し、第１図はブロ
ックコアの斜視図、第２図および第３＠はブロックコア
の寸法関係を説明する正面図。
第４図はブロックコアを治具にセットした状態の正面図
、第５図はブロックコアからヘッドチップを切り出した
状態の斜視図、第６図は第５図に示すヘッドチップの作
動ギャップ長測定図、第７図および第８図はそれぞれ本
発明の他の実施例を示すブロックコアの正面図、第９図
、第１０図、第１１Ｗｉ、第１２図は従来形ブロックコ
アを製作している状態を順を追って示す斜視図ならびに
正面図、第１３図は従来形ブロックコアの寸法関係を説
明する正面図、第１４図は第１２図に示すヘッドチップ
の作動ギャップ長測定図、第１５図は従来形ブロックコ
ア製作時における作動ギャップ面各部の応力分布測定図
である。
ｌａ、ｌｂ・・・コアブロック、４・・・作動ギャップ
、（□ヵ、２名）′し
慧１図
１老
￥２Ｚ
基３図
ｉ４−図
ｆ）５図
譜６図
１″￥ ′ｖ）ｓマ アブ面うイｉ１
不′１区 亭８図
摺ｑ図 １日
高目図
高ＩＳ図
１１動Ｎヤ・アブ面。イｉｆ1, 2, 3, 4, 5, and 6 show an embodiment of the magnetic head according to the present invention, and FIG. 1 is a perspective view of a block core, and FIG. 2 is a perspective view of a block core. and 3rd @ is a front view explaining the dimensional relationship of the block core. Figure 4 is a front view of the block core set in the jig, Figure 5 is a perspective view of the head chip cut out from the block core, and Figure 6 is the measurement of the working gap length of the head chip shown in Figure 5. 7 and 8 are front views of block cores showing other embodiments of the present invention, and FIGS. 9, 10, 11Wi, and 12 show conventional block cores manufactured. A perspective view and a front view showing the state in order, FIG. 13 is a front view explaining the dimensional relationship of the conventional block core, FIG. 14 is a measurement diagram of the working gap length of the head chip shown in FIG. 12, and FIG. 15 1 is a stress distribution measurement diagram of various parts of the working gap surface when manufacturing a conventional block core. la, lb...core block, 4...operating gap, (□ka, 2 people)' Shikei 1 Figure 1 Old ¥2Z Base 3 Figure i4-Figure f) 5 Figure 6 Figure 1''\'v) If
Claims (1)
コアブロックのうち、少なくともその一方のコアブロッ
クに巻線溝を有し、かつ前記巻線溝の作動ギャップ側壁
面が作動ギャップ面に対し傾斜している構造の磁気ヘッ
ドにおいて、前記巻線溝の作動ギャップ側傾斜壁面に応
力逃げ溝を設けたことを特徴とする磁気ヘッド。 ２、特許請求の範囲第１項記載の発明において、巻線溝
の作動ギャップ側傾斜壁面に設けられた応力逃げ溝が、
当該壁面の中央に対し作動ギャップの反対側に位置して
いる磁気ヘッド。 ３、特許請求の範囲第１項または第２項記載の発明にお
いて、巻線溝の作動ギャップ側傾斜壁面に設けられた応
力逃げ溝の最大溝深さが、作動ギャップの内端から作動
ギャップ面に直交する仮想面と巻線溝底面部の作動ギャ
ップ側傾斜壁面端部とを結ぶ距離の１／４〜１／２であ
る磁気ヘッド。[Scope of Claims] 1. Of two core blocks butt-joined to form an operating gap, at least one of the core blocks has a winding groove, and a side wall surface of the operating gap of the winding groove. What is claimed is: 1. A magnetic head having a structure in which the winding groove is inclined with respect to a working gap surface, wherein a stress relief groove is provided in an inclined wall surface of the winding groove on the working gap side. 2. In the invention described in claim 1, the stress relief groove provided on the inclined wall surface on the working gap side of the winding groove,
A magnetic head located on the opposite side of the working gap with respect to the center of the wall. 3. In the invention described in claim 1 or 2, the maximum groove depth of the stress relief groove provided on the inclined wall surface on the working gap side of the winding groove is from the inner end of the working gap to the working gap surface. The magnetic head has a distance of 1/4 to 1/2 of the distance connecting the imaginary plane orthogonal to the imaginary plane and the end of the inclined wall surface on the operating gap side of the bottom surface of the winding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10850786A JPS62266715A (en) | 1986-05-14 | 1986-05-14 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10850786A JPS62266715A (en) | 1986-05-14 | 1986-05-14 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62266715A true JPS62266715A (en) | 1987-11-19 |
Family
ID=14486532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10850786A Pending JPS62266715A (en) | 1986-05-14 | 1986-05-14 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62266715A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5471616A (en) * | 1977-11-18 | 1979-06-08 | Fujitsu Ltd | Production of magnetic head |
-
1986
- 1986-05-14 JP JP10850786A patent/JPS62266715A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5471616A (en) * | 1977-11-18 | 1979-06-08 | Fujitsu Ltd | Production of magnetic head |
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