JPH0333927Y2 - - Google Patents
Info
- Publication number
- JPH0333927Y2 JPH0333927Y2 JP1983127266U JP12726683U JPH0333927Y2 JP H0333927 Y2 JPH0333927 Y2 JP H0333927Y2 JP 1983127266 U JP1983127266 U JP 1983127266U JP 12726683 U JP12726683 U JP 12726683U JP H0333927 Y2 JPH0333927 Y2 JP H0333927Y2
- Authority
- JP
- Japan
- Prior art keywords
- core
- coil
- melting point
- glass
- 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
Links
- 239000011521 glass Substances 0.000 claims description 31
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 238000004804 winding Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- G11B5/17—Construction or disposition of windings
Description
【考案の詳細な説明】
本考案は磁気ヘツドに係り、特にコイル取付け
構造の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head, and particularly to an improvement in a coil mounting structure.
従来の磁気ヘツドの内で、磁気ヘツドコアに直
接コイルを巻回したものがあり、例えばVTR用
などに使用されている。 Among conventional magnetic heads, there are those in which a coil is directly wound around the magnetic head core, and these are used, for example, in VTRs.
この種の磁気ヘツドは第１図及び第２図に示す
ような構造をしている。断面が略口の字形をした
磁気ヘツドコア（以下、コアと呼称する）１の中
心には、記録及び再生時に該コア１に閉磁路が形
成されるように、中空部２が設けられている。コ
ア１の先端（第１図中の上部）には、記録及び再
生を行なわせるためのギヤツプ３が設けられてお
り、該ギヤツプ３の間〓にガラス層４が溶着して
いる。コア１の所定の部分（以下、コイル巻回部
と呼称する）５に、コイル６が直接巻回されてい
る。 This type of magnetic head has a structure as shown in FIGS. 1 and 2. A hollow portion 2 is provided at the center of a magnetic head core (hereinafter referred to as core) 1 having a substantially square-shaped cross section so that a closed magnetic path is formed in the core 1 during recording and reproduction. A gap 3 for recording and reproducing is provided at the tip of the core 1 (upper part in FIG. 1), and a glass layer 4 is welded between the gaps 3. A coil 6 is directly wound around a predetermined portion 5 of the core 1 (hereinafter referred to as a coil winding portion).
しかしながら、コイル巻回部５には角７がある
ため、その角７によつてコイル６の被膜が破損
し、コイル６とコア１とが電気的に接触する場合
がある。このような支障を除くため、角７を除去
して丸みを設けることが試みられているが、細い
作業を必要とするので、作業が煩雑である。 However, since the coil winding portion 5 has corners 7, the coating of the coil 6 may be damaged by the corners 7, and the coil 6 and the core 1 may come into electrical contact. In order to eliminate this problem, attempts have been made to remove the corners 7 and provide roundness, but this requires narrow work and is complicated.
本考案の目的は、上記従来技術の欠点を除き、
製造が容易で、しかもコイルの被膜の破損を減少
し得る磁気ヘツドの提供にある。 The purpose of the present invention is to eliminate the drawbacks of the above-mentioned prior art,
An object of the present invention is to provide a magnetic head that is easy to manufacture and can reduce damage to the coil coating.
その目的を達成するため、本考案は、第１のコ
アと第２のコアとを接合してギヤツプ及び中空部
を設けて閉磁路を形成してなる磁気ヘツドにおい
て、前記ギヤツプを高融点ガラスで形成し、少な
くとも前記第１のコア及び第２のコアの中空部形
成用の凹部の角に低融点ガラスの絶縁膜を形成
し、この低融点ガラスの絶縁膜を介して前記コア
にコイルが巻回されていることを特徴とする。 In order to achieve this object, the present invention provides a magnetic head in which a first core and a second core are joined to form a closed magnetic path by providing a gap and a hollow part, and the gap is made of high melting point glass. an insulating film of low melting point glass is formed on the corners of at least the recesses for forming the hollow portions of the first core and the second core, and a coil is wound around the core through the insulating film of low melting point glass. It is characterized by being rotated.
以下、本考案の磁気ヘツドに係る一実施例を第
３図及び第４図ととに説明する。 An embodiment of the magnetic head of the present invention will be described below with reference to FIGS. 3 and 4.
断面が略逆コ字状の第１のコア９及び断面が略
コ字状の第２のコア１０は、例えば、単結晶フエ
ライトなどの高透磁率特性を有する金属からな
り、それぞれ、所定の側壁に凹段部８を有しコイ
ル１９を巻回するためのコイル巻回部１１が形成
されている。第３図の如く、第１のコア９と第２
のコア１０は、所定の端面１２において接合さ
れ、一体の磁気ヘツドコア（以下、コアと呼称す
る）１３を構成している。なお、上記の一体化に
より、凹部２０から中空部１６が形成されてい
る。コア１３の先端には、図示していない磁気記
録媒体との間で記録及び再生を行なわせるための
ギヤツプ１４が設けられており、該ギヤツプ１４
の間〓にガラス層１５が溶着され、ギヤツプ１４
は所定の間隔に保たれている。第４図に示す如
く、凹段部８及び凹部２０の角１７の近傍はガラ
ス被膜１８で覆われ、このガラス被覆１８を介し
てコイル１９が巻回されている。 The first core 9 having a substantially inverted U-shaped cross section and the second core 10 having a substantially U-shaped cross section are made of a metal having high magnetic permeability, such as single crystal ferrite, and each has a predetermined side wall. A coil winding part 11 having a recessed step part 8 and around which a coil 19 is wound is formed. As shown in Figure 3, the first core 9 and the second
The cores 10 are joined at a predetermined end face 12 to form an integrated magnetic head core (hereinafter referred to as core) 13. Note that the hollow portion 16 is formed from the recessed portion 20 by the above-mentioned integration. A gap 14 is provided at the tip of the core 13 for recording and reproducing data with a magnetic recording medium (not shown).
A glass layer 15 is welded between the gaps 14 and 14.
are kept at a predetermined interval. As shown in FIG. 4, the vicinity of the corner 17 of the stepped concave portion 8 and the concave portion 20 is covered with a glass coating 18, and a coil 19 is wound through this glass coating 18.
なお、本実施例では、ガラス層１５及びガラス
被膜１８を、同一成分のガラスを使用し同じ工程
内で形成するのではなく、ガラス層１５には高融
点ガラスを使用し、ガラス被膜１８には低融点ガ
ラスを使用している。 In this embodiment, the glass layer 15 and the glass coating 18 are not formed using glass with the same components and in the same process, but instead a high melting point glass is used for the glass layer 15 and a high melting point glass is used for the glass coating 18. Low melting point glass is used.
まず、ガラス層１５は、前記した如く、第１の
コア９と第２のコア１０を一体にする工程で形成
される。第１、第２のコア９，１０のギヤツプ形
成面に、それぞれ所定量の高融点ガラスを塗布
し、上記コア９，１０を組合せた状態で高温炉
（図示せず）に入れ、適当に回転させる。溶融し
たガラスは、ギヤツプ１４内に一様に充満してガ
ラス層１５を形成する。このように、ガラス層１
５を先に形成した後、別の工程において、ガラス
層１５形成時よりも低温状態でガラス被膜１８を
形成する。すなわち、コイル巻回部１１の角１７
近傍に、所定量の低融点ガラスを塗布し、炉内で
前記回転操作により、角１７近傍にガラス被膜１
８を形成する。そして高温炉から取り出して冷却
し、コイル１９を巻回すると第３図の如き磁気ヘ
ツドが完成する。 First, the glass layer 15 is formed in the step of integrating the first core 9 and the second core 10, as described above. A predetermined amount of high melting point glass is applied to the gap forming surfaces of the first and second cores 9 and 10, respectively, and the combined cores 9 and 10 are placed in a high temperature furnace (not shown) and rotated appropriately. let The molten glass uniformly fills the gap 14 to form a glass layer 15. In this way, glass layer 1
5 is formed first, a glass coating 18 is formed in another step at a lower temperature than when forming the glass layer 15. That is, the corner 17 of the coil winding portion 11
A predetermined amount of low melting point glass is applied near the corner 17, and by the rotation operation described above in the furnace, a glass coating 1 is formed near the corner 17.
form 8. The magnetic head is then taken out from the high temperature furnace, cooled, and wound with a coil 19 to complete the magnetic head as shown in FIG.
ガラス被膜１８が設けられると、その被膜１８
の表面はなめらかであるため、巻回したコイル１
９の被膜の破損が防止され、コイル１９とコア１
３とが接触する事態は大幅に低減される。 When the glass coating 18 is provided, the coating 18
Since the surface of is smooth, the wound coil 1
9 is prevented from being damaged, and the coil 19 and core 1
3. The situation in which the two come into contact with each other is greatly reduced.
以上に述べたように、本考案は、ギヤツプを高
融点ガラスで形成し、角部を低融点ガラスで絶縁
膜を形成したことにより、絶縁膜を形成する際に
ギヤツプ形成用のガラスが溶けないことから、ギ
ヤツプ寸法に変化は発生せずギヤツプ寸法精度の
良い磁気ヘツドを形成することができる。 As described above, in this invention, the gap is formed with high melting point glass and the insulating film is formed at the corner with low melting point glass, so that the glass for forming the gap does not melt when forming the insulating film. Therefore, there is no change in the gap size, and a magnetic head with high gap size accuracy can be formed.
第１図及び第２図は従来の磁気ヘツドの構造を
示し、第１図は平面図、第２図は第１図のＡ−Ａ
線拡大断面図、第３図及び第４図は本考案の一実
施例に係る磁気ヘツドの構造を示し、第３図はコ
イルを透視した状態の平面図、第４図は第３図の
Ｂ−Ｂ線拡大断面図である。
１３……磁気ヘツドコア、１６……中空部、１
７……角、１８……ガラス被膜、１９……コイ
ル、２０……凹部。
Figures 1 and 2 show the structure of a conventional magnetic head, with Figure 1 being a plan view and Figure 2 being A-A in Figure 1.
3 and 4 show the structure of a magnetic head according to an embodiment of the present invention, FIG. 3 is a plan view of the coil seen through, and FIG. 4 is a view of B in FIG. -B is an enlarged sectional view. 13...Magnetic head core, 16...Hollow part, 1
7... Corner, 18... Glass coating, 19... Coil, 20... Recessed portion.
Claims (1)
及び中空部を設けて閉磁路を形成してなる磁気ヘ
ツドにおいて、前記ギヤツプを高融点ガラスで形
成し、少なくとも前記第１のコア及び第２のコア
の中空部形成用の凹部の角に低融点ガラスの絶縁
膜を形成し、この低融点ガラスの絶縁膜を介して
前記コアにコイルが巻回されていることを特徴と
する磁気ヘツド。 In a magnetic head in which a first core and a second core are joined to form a closed magnetic path by providing a gap and a hollow portion, the gap is formed of high melting point glass, and at least the first core and the second core are bonded to each other to form a closed magnetic path. A magnetic head characterized in that an insulating film of low melting point glass is formed at the corner of the recessed part for forming the hollow part of the core of No. 2, and a coil is wound around the core through the insulating film of low melting point glass. .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983127266U JPS6035311U (en) | 1983-08-19 | 1983-08-19 | magnetic head |
| KR2019840006635U KR890005691Y1 (en) | 1983-08-19 | 1984-07-11 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983127266U JPS6035311U (en) | 1983-08-19 | 1983-08-19 | magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6035311U JPS6035311U (en) | 1985-03-11 |
| JPH0333927Y2 true JPH0333927Y2 (en) | 1991-07-18 |
Family
ID=30289108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983127266U Granted JPS6035311U (en) | 1983-08-19 | 1983-08-19 | magnetic head |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6035311U (en) |
| KR (1) | KR890005691Y1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109816A (en) * | 1978-02-16 | 1979-08-28 | Matsushita Electric Ind Co Ltd | Magnetic head and production of the same |
| JPS5532251A (en) * | 1978-08-23 | 1980-03-06 | Sanyo Electric Co Ltd | Magnetic head |
-
1983
- 1983-08-19 JP JP1983127266U patent/JPS6035311U/en active Granted
-
1984
- 1984-07-11 KR KR2019840006635U patent/KR890005691Y1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109816A (en) * | 1978-02-16 | 1979-08-28 | Matsushita Electric Ind Co Ltd | Magnetic head and production of the same |
| JPS5532251A (en) * | 1978-08-23 | 1980-03-06 | Sanyo Electric Co Ltd | Magnetic head |
Also Published As
| Publication number | Publication date |
|---|---|
| KR890005691Y1 (en) | 1989-08-25 |
| JPS6035311U (en) | 1985-03-11 |
| KR850009665U (en) | 1985-12-05 |
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