JPH0114989Y2

JPH0114989Y2 -

Info

Publication number: JPH0114989Y2
Application number: JP20177282U
Authority: JP
Priority date: 1982-12-28
Filing date: 1982-12-28
Publication date: 1989-05-02
Also published as: JPS59104316U

Description

【考案の詳細な説明】本考案は磁気ヘツドに関し、特に前面板への接
着剤の応力影響を受けにくいようにした磁気ヘツ
ドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head, and more particularly to a magnetic head that is less susceptible to the effects of stress on the front plate of an adhesive.

従来の磁気ヘツドは、第１図および第２図に示
すように、ホールドケース３の上端よりコア２を
突出させると共に、磁気記録媒体との摺接面の前
記コア２以外の部分には、コア２と同質材料の前
面板１をホールドケース３の凹部３ａに接着して
いるが、その接着面構造は、第２図に示すように
前面板１の磁気記録媒体との摺接面の反対面は平
坦になつており、接着剤５は前面板１の接着面の
概略全体に塗布されているのが一般であつた。従
つて、前記従来例の場合、前面板１は接着剤５の
膨張・収縮の影響を受けやすく、前面板１が時間
が経過するに従つて変位し、所定位置へ定位でき
ない等の欠点があつた。 As shown in FIGS. 1 and 2, a conventional magnetic head has a core 2 protruding from the upper end of a hold case 3, and a portion other than the core 2 on the sliding surface with the magnetic recording medium. The front plate 1 made of the same material as 2 is bonded to the recess 3a of the hold case 3, and the bonding surface structure is as shown in FIG. is flat, and the adhesive 5 is generally applied to approximately the entire adhesive surface of the front plate 1. Therefore, in the case of the conventional example, the front plate 1 is susceptible to the expansion and contraction of the adhesive 5, and the front plate 1 displaces as time passes and has disadvantages such as being unable to be positioned at a predetermined position. Ta.

本考案は叙上の点に鑑みなされたもので、接着
剤の膨張・収縮の影響を受けにくい前面板の構造
を提供するにある。 The present invention has been devised in view of the above points, and the object is to provide a front panel structure that is less susceptible to the effects of expansion and contraction of adhesive.

以下、本考案の一実施例を第３図および第４図
を用いて詳細に説明する。第３図は磁気ヘツドの
分解斜視図、第４図は同断側面図である。図にお
いて、６は前面板で、該前面板６は後述するコア
９と同等の摺動性・摩耗性をもつ材質でできてい
る。また、前面板６は略々箱形状を成し、磁気記
録媒体との摺接面６ａの反対側には２本の突堤
７，７（突部）が設けてあり、２本の該突堤７，
７の間は溝８となつている。１０はホールドケー
スで、ホールドケース１０の上端にはVTRテー
プの音声消去用コア９が組み込まれている。ま
た、ホールドケース１０の前面板６が組み込まれ
る部分は凸字形の凹部１０ａが設けてあり、前記
前面板６の突堤部分７，７は溝部分１１，１１に
また、ホールドケース１０の突部１２は前面板６
の溝８に納まる形となつており、前面板６を所定
位置に定位させる。そして、突堤７，７あるいは
溝１１，１１に塗布した接着剤１４により前面板
６はホールドケース１０に接着されている。な
お、図において、１３，１３は端子である。 Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 3 and 4. FIG. 3 is an exploded perspective view of the magnetic head, and FIG. 4 is a sectional side view thereof. In the figure, reference numeral 6 denotes a front plate, and the front plate 6 is made of a material having the same slidability and abrasion properties as the core 9, which will be described later. Further, the front plate 6 is approximately box-shaped, and two protrusions 7, 7 (protrusions) are provided on the opposite side of the sliding surface 6a with the magnetic recording medium. ，
The space between 7 is a groove 8. 10 is a hold case, and a core 9 for erasing the audio of a VTR tape is incorporated in the upper end of the hold case 10. Further, a convex-shaped recess 10a is provided in a portion of the hold case 10 into which the front plate 6 is assembled, and the jetty portions 7, 7 of the front plate 6 are provided with groove portions 11, 11, and the protrusion 12 of the hold case 10 is provided with a convex recess 10a. is front plate 6
The front plate 6 is positioned in a predetermined position. The front plate 6 is adhered to the hold case 10 by an adhesive 14 applied to the jetties 7, 7 or the grooves 11, 11. In addition, in the figure, 13 and 13 are terminals.

本考案は叙上の通り、前面板６の磁気記録媒体
との摺接面６ａの反対面に突部７を設け、該突部
に接着剤１４を塗布したので、前面板６をホール
ドケース１０に接着する接着面積が少なくてよい
ので、前面板は接着剤による収縮・膨張の影響が
受けにくくなり、前面板が変位することなく、確
実に所定位置に保持された状態を保つことがで
き、高性能である等の効果がある。 As described above, in the present invention, a protrusion 7 is provided on the opposite surface of the front plate 6 to the sliding contact surface 6a with the magnetic recording medium, and the adhesive 14 is applied to the protrusion. Since the adhesive area required for adhesion to the front panel is small, the front panel is less susceptible to contraction and expansion caused by the adhesive, and the front panel can be reliably held in place without being displaced. It has effects such as high performance.

また、前記実施例のように、前面板に２つの突
堤を設けると共に、ホールドケースに凸字形の凹
部を設け、突堤とホールドケースの溝、前面板の
溝とホールドケースの突部とを合致させるように
すれば、ホールドケースはさらに確実に位置決め
ができると共に確実に接着することができる等の
効果もある。 Further, as in the above embodiment, two jetties are provided on the front plate, and a convex-shaped recess is provided on the hold case, so that the jetty and the groove of the hold case, and the groove of the front plate and the protrusion of the hold case match. By doing so, the hold case can be positioned even more reliably and can also be bonded more reliably.

[Brief explanation of drawings]

第１図および第２図は従来の磁気ヘツドを示
し、第１図は斜視図、第２図は断側面図、第３図
および第４図は本考案の１実施例を示し、第３図
は分解斜視図、第４図は断側面図である。６…前面板、６ａ…摺接面、７…突堤（突部）、
８…溝、９…コア、１０…ホールドケース、１０
ａ…凹部、１１…溝、１２…突部。 1 and 2 show a conventional magnetic head, FIG. 1 is a perspective view, FIG. 2 is a sectional side view, FIGS. 3 and 4 show an embodiment of the present invention, and FIG. is an exploded perspective view, and FIG. 4 is a sectional side view. 6... Front plate, 6a... Sliding surface, 7... Jetty (protrusion),
8...Groove, 9...Core, 10...Hold case, 10
a... recess, 11... groove, 12... protrusion.

Claims

[Scope of utility model registration request]

In a magnetic head in which a front plate is adhered to the surface of the hold case that slides in contact with the magnetic recording medium, a protrusion is provided on the opposite surface of the front plate to the surface that slides in contact with the magnetic recording medium, and an adhesive is applied to the protrusion. A magnetic head characterized by: