JPH081684B2 - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH081684B2 JPH081684B2 JP60204546A JP20454685A JPH081684B2 JP H081684 B2 JPH081684 B2 JP H081684B2 JP 60204546 A JP60204546 A JP 60204546A JP 20454685 A JP20454685 A JP 20454685A JP H081684 B2 JPH081684 B2 JP H081684B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- case
- pressing
- magnetic
- opening
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、磁気ヘッド特にケース内に配置した磁気コ
アをケースに押圧して固定する磁気ヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head, and more particularly to a magnetic head that presses and fixes a magnetic core arranged in a case onto the case.
［従来技術］ 従来の磁気ヘッドが第４図及び第５図に図示されてお
り、同図において符号１で示すものはケースであり、こ
のケースの正面には磁気記録媒体（図示せず）に摺動さ
れる摺動面1aが形成され、さらにこの摺動面1aには開口
部1bが形成されている。又ケース１の上面側には磁気ヘ
ッドの構成部品をケース内に挿入するための開口部1cが
形成されている。このケース１に挿入される前部コア２
は前部コアの半体を磁気ギャップＧを介して突き合わせ
て構成されており、この前部コア２に断面がコ字状の後
部コア３を突き合わせて磁気コアが構成されている。又
この後部コア３は断面がＬ字状の後部コア半体の一対を
突き合わせて構成されており、前部コア2,後部コア３は
例えばフェライト等の高透磁率磁性材料から構成されて
いる。又後部コア３には両端にフランジ部4a,4aを有す
る糸巻状の巻線ボビが取り付けられここに巻線５が巻回
される。又巻線ボビン４には、フランジ部4a,4a及びそ
の間の軸部を貫通する断面が矩形の穴4bが形成されてい
る。[Prior Art] A conventional magnetic head is shown in FIGS. 4 and 5, and a reference numeral 1 in the drawings is a case, and a magnetic recording medium (not shown) is provided in front of the case. A sliding surface 1a to be slid is formed, and an opening 1b is formed in the sliding surface 1a. An opening 1c is formed on the upper surface of the case 1 for inserting the components of the magnetic head into the case. Front core 2 inserted in this case 1
Is formed by abutting half bodies of a front core via a magnetic gap G, and a front core 2 and a rear core 3 having a U-shaped cross section are abutted to form a magnetic core. Further, the rear core 3 is formed by abutting a pair of rear core halves having an L-shaped cross section, and the front core 2 and the rear core 3 are made of a high-permeability magnetic material such as ferrite. A bobbin-shaped winding bobbin having flanges 4a, 4a at both ends is attached to the rear core 3, and the winding 5 is wound around the bobbin. Further, the winding bobbin 4 is formed with a hole 4b having a rectangular cross section that penetrates the flange portions 4a, 4a and the shaft portion therebetween.
以上の構成部品を組み立てる場合、まず巻線ボビン４
の穴4bに両側から後部コア３の半体の屈曲部を嵌合して
その先端同士を穴4b内で突き合わせた後、この後部コア
３と前部コア２を突き合わせ、磁気コア組立体を得る。
次にこの組立体をケース１内の開口部1cを介して挿入
し、第５図に示したようにケース１内に配置させる。When assembling the above components, first, the winding bobbin 4
After fitting the bent portions of the halves of the rear core 3 from both sides into the holes 4b and making their tips abut in the holes 4b, the rear core 3 and the front core 2 are abutted to obtain a magnetic core assembly. .
Next, this assembly is inserted through the opening 1c in the case 1 and placed in the case 1 as shown in FIG.
この場合第５図に示すように前部コア２の磁気ギャッ
プＧ側はケース２の摺動面の開口部1bに臨まされ、又巻
線ボビン４のフランジ部4aとケース１の後部内側面との
間には隙間があくように構成されている。この隙間には
第５図に示すように板ばね６を嵌合させることにより磁
気コア組立体が固定される。即ち断面がほぼ「く」の字
形をした板ばね６を広げた状態で、この隙間に嵌合する
と板ばね６が元の形に縮まろうとして巻線ボビン４のフ
ランジ部4aを開口部1b方向に向かって押圧しこの押圧力
により前部コア２がケース１の摺動面1a側の内側面に圧
接されることにより磁気コア組立体の全体が固定され
る。またこの押圧力により前部コア２と後部コア３が密
着することにより両者の磁気的な導通がとられる。In this case, as shown in FIG. 5, the magnetic gap G side of the front core 2 faces the opening 1b of the sliding surface of the case 2, and the flange portion 4a of the winding bobbin 4 and the rear inner surface of the case 1 are connected to each other. There is a gap between them. The magnetic core assembly is fixed in this gap by fitting a leaf spring 6 as shown in FIG. That is, when the leaf spring 6 having a substantially V-shaped cross-section is spread and fitted into this gap, the leaf spring 6 tries to shrink to its original shape and the flange portion 4a of the winding bobbin 4 is moved toward the opening 1b. The front core 2 is pressed against the inner surface of the case 1 on the sliding surface 1a side by this pressing force, so that the entire magnetic core assembly is fixed. Further, the pressing force brings the front core 2 and the rear core 3 into close contact with each other to establish magnetic conduction between them.
［発明が解決しようとする問題点］ このような従来の磁気ヘッドにおいては、板ばね６の
嵌合はフランジ4aとケース１間の隙間が狭い等の理由で
作業が困難であり、又板ばね６を比較的大きな力で押し
込まなければ嵌入できないという問題がある。そのため
嵌合時は磁気コア、特に後部コア３に大きな力や衝撃が
加わり、磁気コアが脆いフェライト等から構成されてい
る場合には欠けが生じることがある。またコアに加えら
れる応力によって磁気コアの磁気特性に歪みを生じるこ
とがある。さらに従来構造では板ばね６が必要となり部
品点数が増加するという問題点がある。[Problems to be Solved by the Invention] In such a conventional magnetic head, it is difficult to fit the leaf springs 6 because the gap between the flange 4a and the case 1 is narrow, and the leaf springs are also difficult to work. There is a problem that it cannot be inserted unless the 6 is pushed in with a relatively large force. Therefore, a large force or impact is applied to the magnetic core, especially the rear core 3 during fitting, and a chip may occur when the magnetic core is made of brittle ferrite or the like. In addition, the stress applied to the core may cause distortion in the magnetic characteristics of the magnetic core. Further, the conventional structure has the problem that the leaf spring 6 is required and the number of parts increases.
従って本発明はこのような問題点を解決するために成
されたもので、構成が簡単で安価な構造により磁気コア
をケース内に固定できる磁気ヘッドを提供することを目
的とする。Therefore, the present invention has been made to solve such a problem, and an object of the present invention is to provide a magnetic head capable of fixing a magnetic core in a case with a simple and inexpensive structure.
［問題点を解決するための手段］ 上記問題点を解決するため本発明においては、正面に
磁気記録媒体が接触する磁気ギャップが設けられた第１
のコアと、コイルが巻回され前記第１のコアの背面に突
き合わされる第２のコアと、前記第１のコアおよび前記
第２のコアを収容するケースから成る磁気ヘッドにおい
て、 前記ケースには、前記第１のコアの正面を露出させる
ための開口部が正面に設けられるとともに、 前記開口部の縁部から前記ケースの背面側へ向かう方
向に沿って形成された切溝により前記開口部を広げる方
向と該方向の逆方向に弾性変形可能に形成され、前記第
１のコアを前記逆方向に弾性的に押圧する押圧部が設け
られ、 前記第１のコアを押圧する前記押圧部の押圧面は、該
押圧部による第１のコアの押圧方向に対して前記ケース
の背面側へ向かって傾斜した傾斜面に形成された構成を
採用した。[Means for Solving the Problems] In order to solve the above problems, in the present invention, a first magnetic gap is provided on the front surface for contacting a magnetic recording medium.
A core, a second core around which a coil is wound and abuts against the back surface of the first core, and a case containing the first core and the second core. The opening is provided on the front surface to expose the front surface of the first core, and the opening is formed by a kerf formed along the direction from the edge of the opening toward the back side of the case. A pressing portion that is elastically deformable in a direction in which the first core is widened and is elastically deformable in the opposite direction, and that presses the first core elastically in the reverse direction. The pressing surface has a structure in which the pressing portion is formed as an inclined surface inclined toward the back side of the case with respect to the pressing direction of the first core.
［作用］ このような構成によれば、磁気ヘッドの組み立て時に
は、ケースの押圧部を開口部を広げる方向に弾性変形さ
せて第１と第２のコアの組立体を開口部からケースに挿
入することができる。そして、元の形状に復帰しようと
する押圧部が第１のコアを前記広げる方向と逆方向に弾
性的に押圧することにより、押圧部の押圧面の傾斜を介
して、第１と第２のコアの組立体がケースの背面側へ押
圧され、固定される。このようにして、特別な押圧部材
を用いることなく、第１と第２のコアの組立体をケース
内に固定することができる。[Operation] According to such a configuration, when assembling the magnetic head, the pressing portion of the case is elastically deformed in the direction to widen the opening, and the assembly of the first and second cores is inserted into the case through the opening. be able to. Then, the pressing portion, which tries to return to the original shape, elastically presses the first core in the direction opposite to the unfolding direction, so that the first and the second are pressed through the inclination of the pressing surface of the pressing portion. The core assembly is pressed and fixed to the back side of the case. In this way, the assembly of the first and second cores can be fixed in the case without using a special pressing member.
［実施例］ 以下図面に示す実施例に従い本発明を詳細に説明す
る。Embodiments The present invention will be described in detail below with reference to embodiments shown in the drawings.
第１図〜第３図には本発明の一実施例が図示されてお
り、同図において第４図及び第５図の従来例と同一の部
分には同一の参照符号を付しその説明は省略する。An embodiment of the present invention is shown in FIGS. 1 to 3, in which the same parts as those in the conventional example shown in FIGS. 4 and 5 are designated by the same reference numerals and the description thereof will be omitted. Omit it.
本実施例ではケース７自体が弾性を有するプラスチッ
ク等の材料から一体に形成されており、第１図に示すよ
うにケース上部7aはコア押え用の弾性部となっている。
この弾性部7aの両側にはさらに弾性を増加させるために
切溝7b,7bが形成される。In the present embodiment, the case 7 itself is integrally formed of an elastic material such as plastic, and as shown in FIG. 1, the case upper portion 7a is an elastic portion for pressing the core.
Cut grooves 7b, 7b are formed on both sides of the elastic portion 7a to further increase elasticity.
このような構成において磁気コア組立体をケース７に
挿入する場合、第２図に図示したように弾性部7aを治具
等によりＬ＞ｌの関係になるまで開口を広げる方向に変
形させ、その後磁気コア組立体をケース７に挿入する。
続いて治具を取り除くことによりＳ＜ｌの寸法関係に
し、それにより弾性部7aの弾性力により磁気コア組立体
をケースの押圧面7a,7d間で挾むようにし固定すること
ができる。又取付面側（図中下側）の押圧面7d及び弾性
部7a側の押圧面7cを、図示したように押圧方向に対して
傾斜させることによりテープ摺動面と対向する基準面7e
に対してもコア組立体を押し付けることが可能になる。When the magnetic core assembly is inserted into the case 7 in such a configuration, the elastic portion 7a is deformed by a jig or the like in a direction in which the opening is widened until the relation of L> l is satisfied, as shown in FIG. Insert the magnetic core assembly into the case 7.
Subsequently, by removing the jig, the dimensional relationship of S <l is established, whereby the magnetic core assembly can be fixed by sandwiching between the pressing surfaces 7a and 7d of the case by the elastic force of the elastic portion 7a. Further, as shown in the figure, the pressing surface 7d on the mounting surface side (lower side in the figure) and the pressing surface 7c on the elastic portion 7a side are inclined with respect to the pressing direction as shown in FIG.
It is also possible to press the core assembly against.
又弾性部7aの弾性をさらに高めるために第２図，第３
図に図示したように溝7fを設けるようにしてもよい。Further, in order to further increase the elasticity of the elastic portion 7a, as shown in FIGS.
The groove 7f may be provided as shown in the figure.
［発明の効果］ 以上説明したように本発明によれば、正面に磁気記録
媒体が接触する磁気ギャップが設けられた第１のコア
と、コイルが巻回され前記第１のコアの背面に突き合わ
される第２のコアと、前記第１のコアおよび前記第２の
コアを収容するケースから成る磁気ヘッドにおいて、前
記ケースには、前記第１のコアの正面を露出させるため
の開口部が正面に設けられるとともに、前記開口部の縁
部から前記ケースの背面側へ向かう方向に沿って形成さ
れた切溝により前記開口部を広げる方向と該方向の逆方
向に弾性変形可能に形成され、前記第１のコアを前記逆
方向に弾性的に押圧する押圧部が設けられ、前記第１の
コアを押圧する前記押圧部の押圧面は、該押圧部による
第１のコアの押圧方向に対して前記ケースの背面側へ向
かって傾斜した傾斜面に形成された構成を採用したの
で、磁気ヘッドの組立時に、前記開口部を広げる方向に
押圧部を弾性変形させて第１と第２のコアの組立体を前
記開口部からケースに挿入することができ、前記開口部
と別にコア挿入用の開口部をケースに設ける必要がな
く、ケースは充分な強度を保つことができる。[Effects of the Invention] As described above, according to the present invention, the first core having the magnetic gap on the front surface for contacting the magnetic recording medium and the coil wound around the first core are projected on the back surface of the first core. A magnetic head comprising a combined second core and a case accommodating the first core and the second core, wherein the case has an opening for exposing a front surface of the first core. And is formed so as to be elastically deformable in a direction in which the opening is widened and in a direction opposite to the direction by a kerf formed along the direction from the edge of the opening toward the back side of the case. A pressing portion that elastically presses the first core in the opposite direction is provided, and a pressing surface of the pressing portion that presses the first core has a pressing surface with respect to a pressing direction of the first core by the pressing portion. Toward the rear side of the case Since the structure formed on the inclined surface is adopted, when the magnetic head is assembled, the pressing portion is elastically deformed in the direction in which the opening is widened so that the assembly of the first and second cores is opened from the opening to the case. Can be inserted into the case, and it is not necessary to provide an opening for core insertion in the case separately from the opening, and the case can maintain sufficient strength.
また、ケースに設けられた押圧部の押圧により第１と
第２のコアの組立体をケース内に固定できるので、特別
な押圧部材を用いることなく簡単な構造で第１と第２の
コアの組立体を簡単に無理なく固定でき、従来の押圧部
材を押し込む構造で問題となっていた第１と第２のコア
の損傷や特性の歪みの発生を防止でき、磁気ヘッドの信
頼性を高めることが可能になる。Further, since the assembly of the first and second cores can be fixed in the case by the pressing of the pressing portion provided in the case, the simple structure of the first and second cores can be achieved without using a special pressing member. The assembly can be easily and reasonably fixed, damage to the first and second cores and the characteristic distortion, which have been problems in the conventional structure of pushing the pressing member, can be prevented, and the reliability of the magnetic head is improved. Will be possible.
第１図は本発明に関わる磁気ヘッドの構成を示す分解斜
視図、第２図は磁気コアとケースの組み込み前の状態を
示す断面図、第３図は組み込み後の断面図、第４図は従
来の磁気ヘッドの構造を示す分解斜視図、第５図は従来
の組み込み状態における構造を示す断面図である。 ２……前部コア、３……後部コア ４……巻線ボヒン、５……巻線 ７……ケース、7a……弾性部 7c,7d……押圧面 7e……取付基準面FIG. 1 is an exploded perspective view showing the structure of a magnetic head according to the present invention, FIG. 2 is a sectional view showing a state before assembling a magnetic core and a case, FIG. 3 is a sectional view after assembling, and FIG. FIG. 5 is an exploded perspective view showing the structure of a conventional magnetic head, and FIG. 5 is a cross-sectional view showing the structure in a conventional assembled state. 2 ... Front core, 3 ... Rear core 4 ... Winding boin, 5 ... Winding 7 ... Case, 7a ... Elastic part 7c, 7d ... Pressing surface 7e ... Reference mounting surface
Claims (2)
プが設けられた第１のコアと、コイルが巻回され前記第
１のコアの背面に突き合わされる第２のコアと、前記第
１のコアおよび前記第２のコアを収容するケースから成
る磁気ヘッドにおいて、 前記ケースには、前記第１のコアの正面を露出させるた
めの開口部が正面に設けられるとともに、 前記開口部の縁部から前記ケースの背面側へ向かう方向
に沿って形成された切溝により前記開口部を広げる方向
と該方向の逆方向に弾性変形可能に形成され、前記第１
のコアを前記逆方向に弾性的に押圧する押圧部が設けら
れ、 前記第１のコアを押圧する前記押圧部の押圧面は、該押
圧部による第１のコアの押圧方向に対して前記ケースの
背面側へ向かって傾斜した傾斜面に形成されたことを特
徴とする磁気ヘッド。1. A first core having a magnetic gap on the front surface for contacting a magnetic recording medium, a second core around which a coil is wound and abutted on the back surface of the first core, and the first core. Of the core and the case for accommodating the second core, an opening for exposing the front of the first core is provided in the front of the case, and an edge of the opening is provided. Is formed so as to be elastically deformable in a direction opposite to the direction in which the opening is widened by a kerf formed along the direction from the rear side to the back side of the case.
A pressing portion that elastically presses the core in the opposite direction is provided, and the pressing surface of the pressing portion that presses the first core is the case in the pressing direction of the first core by the pressing portion. A magnetic head formed on an inclined surface inclined toward the back side of the magnetic head.
を特徴とする特許請求の範囲第１項に記載の磁気ヘッ
ド。2. The magnetic head according to claim 1, wherein the kerfs are formed in a plurality of parallel positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60204546A JPH081684B2 (en) | 1985-09-18 | 1985-09-18 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60204546A JPH081684B2 (en) | 1985-09-18 | 1985-09-18 | Magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6265209A JPS6265209A (en) | 1987-03-24 |
| JPH081684B2 true JPH081684B2 (en) | 1996-01-10 |
Family
ID=16492300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60204546A Expired - Lifetime JPH081684B2 (en) | 1985-09-18 | 1985-09-18 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081684B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03110610U (en) * | 1990-02-28 | 1991-11-13 | ||
| JP3656910B2 (en) | 2002-07-22 | 2005-06-08 | 住友電気工業株式会社 | Scribe groove processing method and scribing apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58102319A (en) * | 1981-12-15 | 1983-06-17 | Canon Electronics Inc | Magnetic head |
| JPS58133617A (en) * | 1982-02-04 | 1983-08-09 | Canon Electronics Inc | Magnetic head |
-
1985
- 1985-09-18 JP JP60204546A patent/JPH081684B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6265209A (en) | 1987-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH081684B2 (en) | Magnetic head | |
| JP2002170203A (en) | Magnetic head | |
| JP4230633B2 (en) | Magnetic head | |
| US4288826A (en) | Pad device for use in tape cassette | |
| JPH0227366Y2 (en) | ||
| KR900000014B1 (en) | Magnetic head | |
| JP2585479Y2 (en) | Magnetic head | |
| JP2504380B2 (en) | Magnetic head | |
| JPH0475562B2 (en) | ||
| US4780780A (en) | Magnetic head | |
| JP3180377B2 (en) | Composite magnetic head | |
| JPH0473208B2 (en) | ||
| JPH056564Y2 (en) | ||
| JPH0542046B2 (en) | ||
| JPS6245289Y2 (en) | ||
| JP3029683B2 (en) | How to assemble a magnetic head | |
| JPH07262509A (en) | Magnetic head | |
| KR960005115B1 (en) | Magnetic head and the method for assembling a head thereof | |
| JPH0427208A (en) | Signal line filter and manufacture thereof | |
| JPH11126303A (en) | Magnetic head | |
| JPH0542048B2 (en) | ||
| JPH0476166B2 (en) | ||
| JPH07182605A (en) | Magnetic head apparatus | |
| JPS59223913A (en) | Magnetic head | |
| JPH04351703A (en) | Magnetic head device |