JPS6319929Y2 - - Google Patents
Info
- Publication number
- JPS6319929Y2 JPS6319929Y2 JP1981110383U JP11038381U JPS6319929Y2 JP S6319929 Y2 JPS6319929 Y2 JP S6319929Y2 JP 1981110383 U JP1981110383 U JP 1981110383U JP 11038381 U JP11038381 U JP 11038381U JP S6319929 Y2 JPS6319929 Y2 JP S6319929Y2
- Authority
- JP
- Japan
- Prior art keywords
- case
- dummy block
- adhesive
- magnetic head
- molded
- 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
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は、VTR用の音声信号の消去を行う消
去ヘツドとして好適な磁気ヘツドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head suitable as an erasing head for erasing audio signals for VTRs.
第１図及び第２図は本考案者が先に提案した磁
気ヘツドの一例を示す。これらの図において、樹
脂製ケース１とセラミツク等のダミーブロツク２
とは予め一体に構成されている。すなわち、イン
サートモールドによりダミーブロツク２を金型内
に配置した状態にてケース１の成型を行い、この
結果、ケース１の成型と同時にダミーブロツク２
が一体に保持される構造である。このように構成
したケース１内にヘツドコア３を配設し、さらに
ケース１の背面開口部を樹脂４でモールドする。
なお、ケース１の側面を貫通するように取付穴５
が形成されている。 FIGS. 1 and 2 show an example of a magnetic head previously proposed by the present inventor. In these figures, a resin case 1 and a dummy block 2 made of ceramic or the like are shown.
are configured in advance. That is, the case 1 is molded with the dummy block 2 placed in the mold by insert molding, and as a result, the dummy block 2 is molded at the same time as the case 1 is molded.
This is a structure in which the two parts are held together. The head core 3 is disposed within the case 1 constructed as described above, and the rear opening of the case 1 is further molded with resin 4.
Note that the mounting hole 5 is inserted through the side surface of the case 1.
is formed.
ところで、ケース１の成型に用いる成型材料は
元来接着性がなく、このため、ダミーブロツク２
は、その凹凸によりケース１で機械的に保持され
ているだけである。従つて、成型初期にはケース
１とダミーブロツク２の前面とが一致していたと
しても温度、湿度の変化、その他の衝撃等によ
り、ダミーブロツク２が第２図一点鎖線で示す如
くケース１から遊離して浮上がる危険性がある。 By the way, the molding material used for molding case 1 does not have adhesive properties, so dummy block 2
is merely mechanically held by the case 1 due to its unevenness. Therefore, even if the front surfaces of the case 1 and the dummy block 2 are aligned in the initial stage of molding, due to changes in temperature, humidity, other shocks, etc., the dummy block 2 will move away from the case 1 as shown by the dashed line in FIG. There is a risk of it becoming loose and floating.
本考案は、上記の欠点を除去し、ケース成型時
にダミーブロツクを一体化でき、しかも両者を簡
単かつ確実に接着可能な構造とすることにより、
信頼性の向上を図つた磁気ヘツドを提供しようと
するものである。 The present invention eliminates the above-mentioned drawbacks, allows the dummy block to be integrated during case molding, and has a structure that allows both to be easily and reliably bonded.
The present invention aims to provide a magnetic head with improved reliability.
以下、本考案に係る磁気ヘツドの実施例を図面
に従つて説明する。 Embodiments of the magnetic head according to the present invention will be described below with reference to the drawings.
第３図において、樹脂製ケース１Ａとセラミツ
クのダミーブロツク２Ａとは予め一体に構成され
ている。すなわち、インサートモールドによりダ
ミーブロツク２Ａを金型内に配置した状態にてケ
ース１Ａの成型を行い、この結果、ケース１Ａの
成型と同時にダミーブロツク２Ａが一体に保持さ
れる構造である。このように構成されるケース１
Ａにはヘツドコア収納凹部１０、取付穴５に加え
て、ダミーブロツク２Ａの背面からケース１Ａの
背面に達する接着剤充填用貫通穴１１が形成され
ている。そして、ヘツドコア収納凹部１０内にヘ
ツドコア３を配設し、ケース１Ａの背面開口部を
樹脂４でモールドするとともに、接着剤充填用穴
１１内にエポキシ樹脂等の熱硬化性接着剤１２を
充填し、ケース１Ａとダミーブロツク２Ａとを確
実に接着一体化する。 In FIG. 3, a resin case 1A and a ceramic dummy block 2A are integrally constructed in advance. That is, the case 1A is molded with the dummy block 2A placed in the mold by insert molding, and as a result, the dummy block 2A is held integrally at the same time as the case 1A is molded. Case 1 configured like this
In addition to a head core storage recess 10 and a mounting hole 5, a through hole 11 for filling adhesive is formed in A, which reaches from the back surface of the dummy block 2A to the back surface of the case 1A. Then, the head core 3 is placed in the head core storage recess 10, the back opening of the case 1A is molded with resin 4, and the adhesive filling hole 11 is filled with a thermosetting adhesive 12 such as epoxy resin. , the case 1A and the dummy block 2A are reliably bonded and integrated.
以上の実施例の構成によれば、次のような効果
を上げることができる。 According to the configuration of the above embodiment, the following effects can be achieved.
(1) ケース１Ａを成型すると同時にダミーブロツ
ク２Ａを保持できるから、製造工数の低減がで
き、組立の自動化が容易となる。(1) Since the dummy block 2A can be held at the same time as the case 1A is molded, the number of manufacturing steps can be reduced and assembly can be easily automated.
(2) ケース１Ａに、ダミーブロツク２Ａの背面か
らケース１Ａの背面に達する接着剤充填用穴１
１が形成されており、この接着剤充填用穴１１
に接着剤１２を充填することによつて、ケース
１Ａとダミーブロツク２Ａとを確実に接着一体
化でき、ダミーブロツク２Ａの浮上りを防ぎ、
信頼性を向上させることができる。(2) Hole 1 for filling adhesive in case 1A that reaches from the back of dummy block 2A to the back of case 1A.
1 is formed, and this adhesive filling hole 11
By filling the adhesive 12 into the case 1A and the dummy block 2A, the case 1A and the dummy block 2A can be reliably bonded and integrated, and the floating of the dummy block 2A can be prevented.
Reliability can be improved.
(3) 製造容易であるため、製造原価の大幅低減が
できる。(3) Since it is easy to manufacture, manufacturing costs can be significantly reduced.
叙上のように、本考案によれば、ケース成型時
にダミーブロツクを一体化でき、しかも両者を簡
単かつ確実に接着できる構造としたので、製造容
易で信頼性の高い磁気ヘツドを得ることができ、
テープ摺動面をヘツドコアとダミーブロツクとで
構成するものに適用すれば効果は極めて大きい。 As mentioned above, according to the present invention, the dummy block can be integrated when the case is molded, and the two can be easily and reliably bonded together, making it possible to obtain a magnetic head that is easy to manufacture and highly reliable. ,
If applied to a tape sliding surface composed of a head core and a dummy block, the effect will be extremely large.
第１図は従来の磁気ヘツドを示す正面図、第２
図は同側断面図、第３図は本考案に係る磁気ヘツ
ドの実施例を示す側断面図である。
１，１Ａ……ケース、２，２Ａ……ダミーブロ
ツク、３……ヘツドコア、４……樹脂、５……取
付穴、１０……ヘツドコア収納凹部、１１……接
着剤充填用穴、１２……熱硬化性接着剤。
Figure 1 is a front view of a conventional magnetic head; Figure 2 is a front view of a conventional magnetic head;
This figure is a sectional view of the same side, and FIG. 3 is a sectional side view showing an embodiment of the magnetic head according to the present invention. 1, 1A... Case, 2, 2A... Dummy block, 3... Head core, 4... Resin, 5... Mounting hole, 10... Head core storage recess, 11... Adhesive filling hole, 12... Thermosetting adhesive.
Claims (1)
により一体的に保持した磁気ヘツドであつて、前
記ケースに前記ダミーブロツク背面から当該ケー
ス背面に達する接着剤充填用貫通穴を形成し、該
接着剤充填用貫通穴に接着剤を設けて前記ケース
と前記ダミーブロツクとを接着したことを特徴と
する磁気ヘツド。 A magnetic head in which a ceramic dummy block is integrally held by molding a resin case, and the case has a through hole for filling an adhesive reaching from the back side of the dummy block to the back side of the case, and the through hole for filling the adhesive reaches the back side of the case. 1. A magnetic head, characterized in that said case and said dummy block are bonded together by providing an adhesive thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11038381U JPS5817607U (en) | 1981-07-27 | 1981-07-27 | magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11038381U JPS5817607U (en) | 1981-07-27 | 1981-07-27 | magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5817607U JPS5817607U (en) | 1983-02-03 |
| JPS6319929Y2 true JPS6319929Y2 (en) | 1988-06-03 |
Family
ID=29904751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11038381U Granted JPS5817607U (en) | 1981-07-27 | 1981-07-27 | magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5817607U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59216607A (en) * | 1983-05-24 | 1984-12-06 | Kobe Steel Ltd | Scraping apparatus of precipitated sand |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50121715U (en) * | 1974-03-18 | 1975-10-04 |
-
1981
- 1981-07-27 JP JP11038381U patent/JPS5817607U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5817607U (en) | 1983-02-03 |
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