JPH0230842Y2

JPH0230842Y2 -

Info

Publication number: JPH0230842Y2
Application number: JP17700384U
Authority: JP
Priority date: 1984-11-20
Filing date: 1984-11-20
Publication date: 1990-08-20
Also published as: JPS6192077U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、配線部をもつたプリント配線基板上
にキー接点を有するプリント配線板に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a printed wiring board having a key contact on a printed wiring board having a wiring section.

（従来技術）従来、キー接点を有すプリント配線板としては
第３図および第４図に示すものが知られている。
図によつて以下説明すると、プリント配線板１は
絶縁基板２上に銅箔による配線部４を形成して全
体が絶縁性皮膜６で覆われ、キー接点８の上面お
よびその周辺は絶縁性皮膜６が除かれてキー接点
８が露出している。キー接点８の間からは底面と
なる絶縁基板２が覗いている。露出しているキー
接点８はその上面をスイツチツマミ（図示省略）
が浮動して２つの接点部９，９同士が導通され
る。(Prior Art) Conventionally, as printed wiring boards having key contacts, those shown in FIGS. 3 and 4 are known.
To explain with the drawings below, the printed wiring board 1 has a wiring part 4 made of copper foil formed on an insulating substrate 2, and the whole is covered with an insulating film 6, and the upper surface of the key contact 8 and its surroundings are covered with the insulating film. 6 is removed and the key contact 8 is exposed. An insulating substrate 2 serving as the bottom surface is seen between the key contacts 8. The top surface of the exposed key contact 8 is pressed with a switch knob (not shown)
floats, and the two contact portions 9 are electrically connected to each other.

しかしながら、従来の上記プリント配線板によ
れば、２つの接点部は接点としてのみ働くので単
純な配線パターンとなり大きなプリント配線板と
なつていた。 However, according to the above-mentioned conventional printed wiring board, the two contact portions function only as contacts, resulting in a simple wiring pattern and a large printed wiring board.

（考案が解決しようとする問題点）本考案は、スイツチの接点部が短絡部材を兼ね
るようにして１の部材で２つの働きをなし、無駄
のない構成としたプリント配線板を提供すること
にある。(Problems to be Solved by the Invention) The present invention aims to provide a printed wiring board with an efficient structure in which the contact part of the switch also serves as a shorting member, so that one member performs two functions. be.

（問題を解決するための手段）上記目的を達成するため、本考案に係るプリン
ト配線板は、絶縁基板上に配線パターンを形成す
るプリント配線基板と、そのプリント配線基板上
を覆い前記配線基板を覗く穴を有す絶縁性皮膜
と、その絶縁性皮膜上にカーボン硬化皮膜で形成
し、先端で屈曲する接触突部を前記穴に挿入し
て、２以上の配線部同士を短絡する少くとも２つ
のキー接点とを備えることにある。(Means for solving the problem) In order to achieve the above object, the printed wiring board according to the present invention includes a printed wiring board on which a wiring pattern is formed on an insulating substrate, and a printed wiring board that covers the printed wiring board and covers the printed wiring board. An insulating film having a viewing hole, and a contact protrusion formed with a hardened carbon film on the insulating film and having a bent tip inserted into the hole to short-circuit two or more wiring parts. The key is to have two key contacts.

（実施例）以下本考案の実施例を図を参照しつつさらに説
明する。(Example) Hereinafter, an example of the present invention will be further described with reference to the drawings.

第１図はプリント配線板の平面図、第２図はそ
の−線断面図である。符号１２はプリント配
線基板、１４は配線パターンの一部たる配線部で
ある。プリント配線基板１２は、エポキシ樹脂等
で作られた絶縁基板１６上に銅箔の導電部材で配
線パターンが形成されている。その配線パターン
の一部である配線部１４は、エツチング等によつ
て所望の形状に仕上げることができる。 FIG. 1 is a plan view of the printed wiring board, and FIG. 2 is a cross-sectional view taken along the line -2. Reference numeral 12 is a printed wiring board, and 14 is a wiring section that is a part of the wiring pattern. The printed wiring board 12 has a wiring pattern formed of a conductive member of copper foil on an insulating substrate 16 made of epoxy resin or the like. The wiring portion 14, which is a part of the wiring pattern, can be finished into a desired shape by etching or the like.

プリント配線基板１２は、全面がレジストイン
クからなる絶縁性皮膜１８で覆われる。この絶縁
性皮膜１８によつて隣接する配線部１４同士の接
触はなくなる。この絶縁性皮膜１８上には、さら
にキー接点２０が形成される。キー接点２０は、
カーボンペーストからなるカーボン硬化皮膜をス
クリーン印刷により形成する。このキー接点２０
は、配線部１４上をまたぐようにしたコ字状をな
す２つの接点部２２からなり、両接点部の脚部同
士を入り込ませ少しの間隙をもたせて配線してあ
る。さらに、接点部２２の基部２２ａにおいて
は、配線パターンの２つの配線部１４端末と接続
し電気的に導通させて短絡する。すなわち、接点
部２２の基部２２ａには、配線部１４と接触する
部位にあらかじめ絶縁性皮膜１８上に明けてあつ
た穴に入り込むような接触突部２４が設けてあ
り、この接触突部２４先端が配線部１４上で接す
る。また、キー接点２０の表面は絶縁性皮膜１８
上に露出しており、キー接点２０の表面上をスイ
ツチツマミ（図示省略）が滑動して２つの接点部
２２，２２を導通させる。 The entire surface of the printed wiring board 12 is covered with an insulating film 18 made of resist ink. This insulating film 18 eliminates contact between adjacent wiring parts 14. A key contact 20 is further formed on this insulating film 18. The key contact 20 is
A carbon hardened film made of carbon paste is formed by screen printing. This key contact 20
consists of two U-shaped contact portions 22 extending over the wiring portion 14, and the legs of both contact portions are inserted into each other and wired with a slight gap. Further, the base portion 22a of the contact portion 22 is connected to the terminals of the two wiring portions 14 of the wiring pattern to be electrically connected and short-circuited. That is, the base 22a of the contact portion 22 is provided with a contact protrusion 24 that fits into a hole previously drilled on the insulating film 18 at a portion that contacts the wiring portion 14, and the tip of the contact protrusion 24 contact on the wiring section 14. Further, the surface of the key contact 20 is coated with an insulating film 18.
A switch knob (not shown) slides on the surface of the key contact 20 to bring the two contact parts 22 into conduction.

（考案の効果）以上の説明から明らかなように、本考案のプリ
ント配線板は、配線パターンとキー接点とが絶縁
皮膜を介して隔てて形成されたので、絶縁性皮膜
上のキー接点はスイツチツマミの操作によつて導
通したりそれを遮断したりするスイツチ作用をな
し、そればかりか配線パターンのうちの２つの配
線部を短絡することができる。したがつて、キー
接点は１つの部材で２つの働きをなすので、配線
基板上での配線部の交叉を避けるため２層の基板
にすることがなく構造上無駄のないプリント配線
板が得られる効果がある。(Effects of the invention) As is clear from the above explanation, in the printed wiring board of the invention, the wiring pattern and the key contact are formed separated by an insulating film, so the key contact on the insulating film can be used as a switch. Operation of the knob acts as a switch to make or break conduction, and it is also possible to short-circuit two wiring portions of the wiring pattern. Therefore, since the key contact serves two functions with one member, a printed wiring board with no waste in terms of structure can be obtained without having to use a two-layer board to avoid crossing of the wiring parts on the wiring board. effective.

なお、上記実施例では、２つの配線部１４を短
絡した場合について説明したが、配線部１４は３
つ以上であつてもよい。また、上記実施例中、キ
ー接点の接点部２２は２つであつたが、３つ以上
であつても良い。 In the above embodiment, the case where two wiring parts 14 are short-circuited is explained, but the wiring part 14 is short-circuited.
There may be more than one. Further, in the above embodiment, there are two contact portions 22 of the key contacts, but there may be three or more.

[Brief explanation of the drawing]

第１図は本考案の実施例を示すプリント配線板
正面図。第２図は第１図の−線断面図。第３
図は従来のプリント配線板の平面図。第４図は第
３図の−線断面図。１２……プリント配線基板、１４……配線部、
１６……絶縁基板、１８……絶縁性皮膜、２０…
…キー接点。 FIG. 1 is a front view of a printed wiring board showing an embodiment of the present invention. FIG. 2 is a sectional view taken along the line -- in FIG. 1. Third
The figure is a plan view of a conventional printed wiring board. FIG. 4 is a sectional view taken along the line -- in FIG. 3. 12...Printed wiring board, 14...Wiring section,
16... Insulating substrate, 18... Insulating film, 20...
...Key contact.

Claims

[Scope of Claim for Utility Model Registration] A printed wiring board on which a wiring pattern is formed using a conductive member on an insulating substrate, an insulating film covering the surface of the wiring board and having a hole through which the wiring pattern can be seen, and a top surface of the insulating film. and at least two key contacts which are formed of a carbon hardened film and bent at their tips and inserted into the holes to short-circuit by contacting two or more wiring part terminals of the wiring pattern.