JPH0112436Y2

JPH0112436Y2 -

Info

Publication number: JPH0112436Y2
Application number: JP1983156805U
Authority: JP
Priority date: 1983-10-12
Filing date: 1983-10-12
Publication date: 1989-04-11
Also published as: JPS6082849U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、電子チユーナ等の高周波ユニツトに
おける筐体開口面に装着される外蓋を筐体に対し
て固定、結合する外蓋取付装置に関するものであ
る。[Detailed description of the invention] (Field of industrial application) The present invention relates to an outer cover attachment device for fixing and coupling an outer cover attached to the opening surface of a housing of a high frequency unit such as an electronic tuner to the housing. It is something.

（従来例の構成とその問題点）従来例を第１図および第２図に基づいて説明す
る。(Structure of the conventional example and its problems) The conventional example will be explained based on FIG. 1 and FIG. 2.

図に示すように、従来四角の枠状筐体１の両開
口面に装着され、電気回路もシールドするため
に、金属板で形成された外蓋２，３は筐体の端面
に設けられた複数個の爪４、ならびに筐体内に区
画を形成するため設けられた複数個のシールド板
５の端面に形成された前記と同様の爪６が挿入さ
れる複数の貫通角孔７を有している。それ等の爪
６ならびに貫通角孔７は、筐体ならびにシールド
板に対して、外蓋が機械的に固定結合し、電気的
にシールドするために、第２図Ａに示すような角
孔７に挿入された爪をＢのように回転方向にひね
ることにより、爪に形成された斜面８，９が角孔
の側端面１０，１１に当接し、その状態で回転方
向にひねりを加えることにより、爪の斜面を筐
体、ならびにシールド板の端面方向へ押し寄せ、
爪の適切なひねり回転角度により、外蓋は筐体な
らびにシールド板端面に機械的、電気的に固定さ
れる。 As shown in the figure, outer covers 2 and 3 formed of metal plates are conventionally attached to both opening surfaces of a square frame-shaped casing 1, and are provided on the end faces of the casing in order to shield the electric circuit. It has a plurality of square through holes 7 into which a plurality of claws 4 and claws 6 similar to those described above are inserted, which are formed on the end faces of a plurality of shield plates 5 provided to form partitions within the housing. There is. These claws 6 and through-holes 7 are designed to mechanically and securely connect the outer cover to the casing and shield plate, and to provide electrical shielding. By twisting the claw inserted in the direction of rotation as shown in B, the slopes 8 and 9 formed on the claw come into contact with the side end surfaces 10 and 11 of the square hole. , push the slope of the claw towards the housing and the end face of the shield plate,
The outer cover is mechanically and electrically fixed to the casing and the end face of the shield plate by twisting and rotating the claws at an appropriate angle.

この場合、筐体、シールド板ならびに外蓋はそ
れぞれ金属板を用いているため、第２図Ｃで示す
ように爪の斜面は外蓋の角孔の当接する端部がナ
イフエツジとなつて破断させ、切断部１２ができ
ることにより、爪の斜面を用いた外蓋の筐体、な
らびにシールド板に対する十分な機械的な押圧に
よる固定ができなくなる。またユニツト内の電気
部品の修理、サービス等で再度分解、組立てる場
合に、元に戻した爪をひねつても、前記と同様に
外蓋の筐体、ならびにシールド板に対する十分な
押圧による固定ができない。また爪のひねりの回
転角度が大きすぎると、完全に切断されて爪がな
くなる等の種々の欠点があつた。 In this case, since the casing, the shield plate, and the outer cover each use metal plates, the slope of the claw is broken because the end that contacts the square hole of the outer cover becomes a knife edge, as shown in Figure 2C. Due to the formation of the cut portion 12, it becomes impossible to fix the outer cover to the casing and the shield plate using sufficient mechanical pressure using the slopes of the claws. Also, when disassembling and reassembling the electrical components inside the unit for repair or service, even if you twist the claws that have been put back together, the outer cover cannot be fixed by applying sufficient pressure to the casing and shield plate, as described above. . Furthermore, if the angle of rotation of the twisting of the claw is too large, there are various drawbacks such as the claw being completely cut off and the claw being lost.

（考案の目的）本考案の目的は、従来例の欠点を解消し、外蓋
取付け爪のひねりの角度が大きくなると外蓋の角
孔の端部が切断したり、または爪が切断されてな
くなる等の不都合が起きないようにすることであ
る。(Purpose of the invention) The purpose of the invention is to eliminate the drawbacks of the conventional example, and that when the angle of twist of the outer cover mounting claw becomes large, the end of the square hole of the outer cover is cut off, or the claw is cut off and disappears. The aim is to prevent such inconveniences from occurring.

（考案の構成）本考案の外蓋取付装置は、前述のような外蓋取
付装置において、貫通角孔の側壁は、外蓋の内面
に向けて、折曲部に円弧部をもつ如く、折り曲げ
られたものである。(Structure of the invention) In the outer lid mounting device of the present invention, in the outer lid mounting device as described above, the side wall of the through square hole is bent so as to have an arcuate portion at the bent portion toward the inner surface of the outer lid. It is something that was given.

（実施例の説明）本考案の一実施例を第３図および第４図に基づ
いて説明する。(Description of an Embodiment) An embodiment of the present invention will be described based on FIGS. 3 and 4.

第３図ＡおよびＢに示すように、外蓋の貫通角
孔の側壁部を折曲部１３によつて形成し、爪との
当接部には折曲に伴つて円弧部１６を形成する。
このようにすれば、ナイフエツジが形成されなく
なるので、爪をひねつた場合爪の斜面部は円弧部
に乗り上げるように当接するから、円滑にひねる
ことができると同時に、爪が破損することなく、
外蓋を筐体や仕切板に確実に固定することができ
る。 As shown in FIGS. 3A and 3B, the side wall of the square through hole of the outer lid is formed by a bent part 13, and the part that contacts the claw is formed with an arc part 16 as it is bent. .
By doing this, knife edges will not be formed, so when the nail is twisted, the slope part of the nail will come into contact with the circular arc part, so that the nail can be twisted smoothly, and at the same time, the nail will not be damaged.
The outer cover can be securely fixed to the housing or partition plate.

（考案の効果）本考案によると、従来のように爪の斜面におけ
る破断が生じることなく、外蓋は筐体ならびにシ
ールド板に容易に、確実に固定される効果があ
る。(Effects of the Invention) According to the present invention, the outer cover can be easily and reliably fixed to the housing and the shield plate without causing breakage at the slopes of the claws as in the conventional case.

また、円弧部は貫通角孔の形成と同時に形成さ
れるから、生産工程を増すことなく円弧部を形成
することができる。 Further, since the arcuate portion is formed at the same time as the through-hole is formed, the arcuate portion can be formed without increasing the number of production steps.

[Brief explanation of the drawing]

第１図は従来例の外蓋取付装置の筐体、シール
ド板および外蓋の斜視図、第２図は同爪および外
蓋のひねり固定の斜視図、第３図は本考案による
外蓋の角孔の斜視図および断面図、第４図は同爪
および外蓋の角孔のひねり固定の断面図である。１……筐体、２，３……外蓋、４，６……爪、
５……シールド板、７……貫通角孔、８，９……
斜面、１０，１１……角孔の側端面、１２……切
断部、１３……折り曲げ部、１６……円弧部。 Fig. 1 is a perspective view of the casing, shield plate, and outer cover of a conventional outer cover attachment device, Fig. 2 is a perspective view of the same claw and outer cover twisted and fixed, and Fig. 3 is a perspective view of the outer cover according to the present invention. A perspective view and a sectional view of the square hole, and FIG. 4 is a sectional view of the nail and the square hole of the outer lid fixed by twisting. 1... Housing, 2, 3... Outer lid, 4, 6... Claw,
5... Shield plate, 7... Through square hole, 8, 9...
Slope, 10, 11...Side end surface of the square hole, 12...Cut portion, 13...Bending portion, 16...Circular arc portion.

Claims

[Scope of utility model registration request]

An outer cover attachment device for attaching an outer cover to an opening surface of a frame-shaped casing, the outer cover mounting claw protruding from an end face of the casing or an end face of a shield plate forming a partition within the casing, and the outer cover mounting claw. and a square through hole of the outer lid into which the square through hole is inserted, and the outer lid mounting device is configured to fix the housing and the outer lid by inserting the outer lid mounting claw into the square hole and twisting the nail to fix the housing and the outer lid. An outer lid attachment device characterized in that a side wall is bent so as to have an arcuate portion at a bent portion toward the inner surface of the outer lid.