JPH075528Y2 - Bobbin for magnetic head - Google Patents
Bobbin for magnetic headInfo
- Publication number
- JPH075528Y2 JPH075528Y2 JP1989015531U JP1553189U JPH075528Y2 JP H075528 Y2 JPH075528 Y2 JP H075528Y2 JP 1989015531 U JP1989015531 U JP 1989015531U JP 1553189 U JP1553189 U JP 1553189U JP H075528 Y2 JPH075528 Y2 JP H075528Y2
- Authority
- JP
- Japan
- Prior art keywords
- bobbin
- magnetic head
- sprue
- protrusion
- collar
- 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
Landscapes
- Magnetic Heads (AREA)
Description
この考案は、ボビン構造のフロッピーディスクドライブ
用磁気ヘッド等のヘッドコアの脚部回りの僅かな収納ス
ペースに巻線コイルを配置するために収納される磁気ヘ
ッド用ボビンに関するものである。The present invention relates to a bobbin for a magnetic head, which is housed for arranging a winding coil in a small housing space around a leg portion of a head core of a magnetic head for a floppy disk drive having a bobbin structure.
フロッピーディスクドライブ用磁気ヘッド等の高密度の
磁気記録、再生及び消去を行なう磁気ヘッドの中には、
記録面と反対側のヘッドコアの脚部回りに巻線コイルを
配置するため、コイルを巻いたボビンを使用したものが
ある。 従来、この種のボビンは、通常、射出成形法により金型
を使用して製造され、金型の湯口跡をカット処理した後
に、第３図に示すようにボビン１の片側の鍔２に金型の
湯口跡の突起３が発生しているものが少なくなかった。Some magnetic heads that perform high-density magnetic recording, reproduction and erasing, such as magnetic heads for floppy disk drives,
In order to arrange the winding coil around the leg of the head core on the side opposite to the recording surface, there is one using a bobbin wound with the coil. Conventionally, this type of bobbin is usually manufactured by using a mold by an injection molding method, and after cutting a sprue mark on the mold, a bobbin 1 is provided with a collar 2 on one side as shown in FIG. There were many cases where the protrusion 3 of the mold sprue was generated.
この様な突起を有するボビンにコイルを巻いて、このボ
ビンを上記ボビン構造磁気ヘッドのヘッドコア脚部回り
に挿入しようとすると、例えば第４図に示すジンバル型
磁気ヘッド４のスライダー５にボビン１の突起が当って
スライダー５内に収納することができないなどの事態が
発生する。 ここで上記スライダー等におけるボビンの収納スペース
を広げると、磁気ヘッドが大きなものとなり、磁気ヘッ
ドを搭載するフロッピーディスク装置にとって好ましい
ことではなく、更に設計上許されないこともある。 従って、この考案は、射出成形金型の湯口跡をカット処
理した後にもボビンの鍔の端縁から突起が突出すること
なく製造でき、このため磁気ヘッドのコンパクト化、組
立時の作業性等の向上に役立つ磁気ヘッド用ボビンを提
供することを目的とする。When a coil is wound around a bobbin having such a projection and the bobbin is inserted around the head core leg of the bobbin structure magnetic head, for example, the slider 5 of the gimbal type magnetic head 4 shown in FIG. A situation occurs in which the protrusion hits and cannot be stored in the slider 5. If the storage space of the bobbin in the slider or the like is widened, the magnetic head becomes large, which is not preferable for a floppy disk device equipped with the magnetic head and may not be allowed in the design. Therefore, this invention can be manufactured without the protrusion protruding from the edge of the collar of the bobbin even after cutting the sprue trace of the injection molding die, and therefore, the magnetic head can be made compact and the workability at the time of assembly can be improved. An object of the present invention is to provide a bobbin for a magnetic head that is useful for improvement.
この考案は、磁気ヘッド用ボビンの射出成形金型の湯口
に対応する位置の鍔を該湯口跡の突起が周囲の端縁位置
より内側に引込む形状としたことにより上記目的を達成
したものである。This invention achieves the above object by forming a flange at a position corresponding to a sprue of an injection mold of a bobbin for a magnetic head so that a protrusion of the sprue mark is drawn inward from a peripheral edge position. .
この考案の磁気ヘッド要ボビンの一例としては、第１図
に示すように、片側の鍔２の一コーナーに大きな切欠き
部ａを形成し、破線と切欠線とで囲まれる範囲内に射出
成形金型の湯口跡の突起３を収めるようにしたもの、あ
るいは第２図に示すように、片側の鍔２の一側縁に凹部
ｂを形成し、この凹部ｂの内側に射出成形金型の湯口跡
の突起３を収めるようにしたものが挙げられる。As an example of the magnetic head bobbin of the present invention, as shown in FIG. 1, a large notch portion a is formed at one corner of the collar 2 on one side, and injection molding is performed within a range surrounded by a broken line and a notch line. The mold 3 is designed to accommodate the protrusions 3 of the sprue marks, or as shown in FIG. 2, a recess b is formed on one side edge of the collar 2 on one side, and the inside of the recess b is filled with the injection mold. An example is one in which the protrusion 3 of the sprue mark is housed.
この考案によれば、磁気ヘッド用ボビンの射出成形金型
の湯口に対応する位置の鍔の該湯口跡の突起が、常に周
囲の端縁位置より内側に引込んでおり、従ってこの湯口
跡の突起の突出に伴う磁気ヘッド用ボビンが正しくヘッ
ドコア脚部回りに挿入できないという磁気ヘッド用ボビ
ンの不良及びこのために生じる組立時の作業性の悪さが
解消されると共に、磁気ヘッドのコンパクト化に役立つ
磁気ヘッド用ボビンが提供される。According to this invention, the protrusion of the sprue trace of the collar at the position corresponding to the sprue of the injection molding die of the bobbin for the magnetic head is always pulled inward from the peripheral edge position. Of the magnetic head bobbin due to the protrusion of the magnetic head cannot be correctly inserted around the leg portion of the head core, and the workability at the time of assembly resulting from this is eliminated, and the magnetic head that is useful for compacting the magnetic head is eliminated. A bobbin for the head is provided.
第１図は、この考案の磁気ヘッド用ボビンの一例を示す
斜視図、 第２図は、この考案の磁気ヘッド用ボビンの別の一例を
示す斜視図、 第３図は、従来の磁気ヘッド用ボビンの一例を示す斜視
図、 第４図は、ジンバル型磁気ヘッドの概略断面図である。 １……ボビン、２……鍔、３……突起、ａ……切欠き
部、ｂ……凹部。FIG. 1 is a perspective view showing an example of the magnetic head bobbin of the present invention, FIG. 2 is a perspective view showing another example of the magnetic head bobbin of the present invention, and FIG. 3 is a conventional magnetic head bobbin. FIG. 4 is a perspective view showing an example of a bobbin, and FIG. 4 is a schematic sectional view of a gimbal type magnetic head. 1 ... Bobbin, 2 ... Tsuba, 3 ... Protrusion, a ... Notch, b ... Recess.
Claims (1)
を、該湯口跡の突起が周囲の端縁位置より内側に引込む
形状としたことを特徴とする磁気ヘッド用ボビン。1. A bobbin for a magnetic head, characterized in that a collar at a position corresponding to a sprue of an injection molding die is shaped so that a projection of the sprue mark is drawn inward from a peripheral edge position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989015531U JPH075528Y2 (en) | 1989-02-13 | 1989-02-13 | Bobbin for magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989015531U JPH075528Y2 (en) | 1989-02-13 | 1989-02-13 | Bobbin for magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02110008U JPH02110008U (en) | 1990-09-03 |
| JPH075528Y2 true JPH075528Y2 (en) | 1995-02-08 |
Family
ID=31227662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989015531U Expired - Lifetime JPH075528Y2 (en) | 1989-02-13 | 1989-02-13 | Bobbin for magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075528Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177064U (en) * | 1983-05-10 | 1984-11-27 | 松下電器産業株式会社 | magnetic head device |
-
1989
- 1989-02-13 JP JP1989015531U patent/JPH075528Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02110008U (en) | 1990-09-03 |
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