JPH11317126A - Push-on switch - Google Patents
Push-on switchInfo
- Publication number
- JPH11317126A JPH11317126A JP11077820A JP7782099A JPH11317126A JP H11317126 A JPH11317126 A JP H11317126A JP 11077820 A JP11077820 A JP 11077820A JP 7782099 A JP7782099 A JP 7782099A JP H11317126 A JPH11317126 A JP H11317126A
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- cover member
- insulating cover
- tact metal
- substrate
- 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.)
- Granted
Links
Landscapes
- Push-Button Switches (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】本発明は、プッシュオン式ス
イッチに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push-on switch.
【0002】[0002]
【従来の技術】最近、電子製品の小形化に伴ない、特別
なケースを持たずに基板上に直接組み立てられる小形で
薄形のプッシュオン式スイッチが用いられるようになっ
てきた。これらのスイッチでは、絶縁性基板上に中央部
接点及び端部接点を形成し、基板から離れる方向に向か
って突出するように湾曲した反転動作可能な皿状部を有
するタクト金属板を、皿状部の周縁部の一部が基板に設
けた端部接点と当接するように基板上に配置している。
そしてタクト金属板を基板上の所定位置に保持するため
に、タクト金属板を覆うようにして絶縁カバー部材が基
板に対して固定されている。このスイッチでは、絶縁カ
バー部材の外側からタクト金属板が押圧されると、タク
ト金属板のほぼ中央部が中央部接点と当接して中央部接
点と端部接点とが導通状態になる。この種のスイッチの
公知例としては、実開平1−100333号等に示され
るものがある。このスイッチでは、絶縁カバー部材は基
板に対して固定されてはいるものの、単にタクト金属板
を覆うだけの構造によりタクト金属板を所定の位置に保
持しているため、タクト金属板が移動して、スイッチ動
作が不確実になる問題がある。2. Description of the Related Art Recently, with the miniaturization of electronic products, small and thin push-on switches that can be directly assembled on a substrate without special cases have been used. In these switches, a tact metal plate having a center portion contact and an end contact formed on an insulative substrate and having a reversible operable plate-like portion curved so as to protrude in a direction away from the substrate is formed by a plate-like shape. It is arranged on the substrate so that a part of the peripheral portion of the portion comes into contact with an end contact provided on the substrate.
In order to hold the tact metal plate at a predetermined position on the substrate, an insulating cover member is fixed to the substrate so as to cover the tact metal plate. In this switch, when the tact metal plate is pressed from the outside of the insulating cover member, the substantially central portion of the tact metal plate comes into contact with the center contact, and the center contact and the end contact are brought into a conductive state. A well-known example of this type of switch is disclosed in Japanese Utility Model Laid-Open Publication No. 1-100333. In this switch, although the insulating cover member is fixed to the substrate, the tact metal plate is held at a predetermined position by a structure that merely covers the tact metal plate, so that the tact metal plate moves. However, there is a problem that the switch operation becomes uncertain.
【0003】そこでタクト金属板と絶縁カバー部材とを
粘着剤を用いて接合する技術が提案された。Accordingly, a technique has been proposed for joining a tact metal plate and an insulating cover member using an adhesive.
【0004】[0004]
【発明が解決しようとする課題】タクト金属板と絶縁カ
バー部材とを粘着剤を用いて接合した場合でも、スイッ
チ動作を繰返したり、中央部接点に接続されたジャンパ
線の上に形成したオーバーコートの上にタクト金属板の
周縁部の一部を当接させて、中央部接点とタクト金属板
との間の距離を増大させることによりクリック感を増大
させると、タクト金属板の反転動作が大きくなって、タ
クト金属板と絶縁カバー部材との間に設けた粘着剤が接
合機能を発揮し難くなって(即ち剥がれやすくなっ
て)、タクト金属板が移動し易くなる問題が発生する。Even when the tact metal plate and the insulating cover member are joined by using an adhesive, the switch operation is repeated, or the overcoat formed on the jumper wire connected to the center contact point is formed. When a part of the peripheral edge of the tact metal plate is brought into contact with the top of the tact metal plate to increase the click feeling by increasing the distance between the center contact and the tact metal plate, the reversal operation of the tact metal plate becomes large. As a result, it becomes difficult for the adhesive provided between the tact metal plate and the insulating cover member to exhibit a bonding function (that is, it becomes easy to peel off), and there is a problem that the tact metal plate easily moves.
【0005】本発明の目的は、タクト金属板の移動を阻
止してスイッチ動作を確実に行えるようにしたプッシュ
オン式スイッチを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a push-on type switch in which a tact metal plate is prevented from moving and a switch operation can be performed reliably.
【0006】本発明の他の目的は、絶縁カバー部材とタ
クト金属板とを粘着剤で接合した場合に、絶縁カバー部
材をタクト金属板の変形に確実に追従させることができ
るプッシュオン式スイッチを提供することにある。Another object of the present invention is to provide a push-on switch which can reliably follow the deformation of the tact metal plate when the insulating cover member and the tact metal plate are bonded with an adhesive. To provide.
【0007】[0007]
【課題を解決するための手段】本発明は、中央部接点及
び端部接点が形成された絶縁性基板と、周縁部の一部が
端部接点と当接するように基板上に配置されかつ該基板
から離れる方向に向かって突出するように湾曲した反転
動作可能な皿状部を有するタクト金属板と、タクト金属
板を絶縁性基板上の所定位置に保持すべくタクト金属板
を覆うようにして基板に固定される絶縁カバー部材とを
具備し、タクト金属板と絶縁カバー部材とが粘着剤を介
して接合され、絶縁カバー部材の外側からタクト金属板
の皿状部が押圧されると該皿状部のほぼ中央部が中央部
接点と当接して中央部接点と端部接点とが導通するプッ
シュオン式スイッチを対象とする。本発明では、上記課
題を解決するために、絶縁カバー部材のタクト金属板に
対応する部分にタクト金属板の変形に絶縁カバー部材の
変形を追従させてタクト金属板を所定位置に保持させる
2本のスリットを所定の間隔を開けて並べるように形成
する。このようにすると、タクト金属板の反転動作を繰
り返した場合において、2本のスリットの切れが端部か
ら延びて、最終的につながってしまうような事態が発生
するのを防止できる。このような事態が発生すると、タ
クト金属板が移動しやすくなる問題が発生する。According to the present invention, there is provided an insulating substrate having a center contact and an end contact formed thereon, and an insulating substrate disposed on the substrate such that a part of a peripheral edge thereof contacts the end contact. A tact metal plate having a reversible dish-shaped portion curved to protrude in a direction away from the substrate, and covering the tact metal plate to hold the tact metal plate at a predetermined position on the insulating substrate. An insulating cover member fixed to the substrate, wherein the tact metal plate and the insulating cover member are joined via an adhesive, and the plate is pressed when the dish-shaped portion of the tact metal plate is pressed from outside the insulating cover member. A push-on switch in which a substantially central portion of the shape contacts the central contact and the central contact and the end contact are conducted. In the present invention, in order to solve the above-mentioned problem, two parts are used to hold the tact metal plate at a predetermined position by causing the deformation of the tact metal plate to follow the deformation of the tact metal plate in a portion corresponding to the tact metal plate of the insulating cover member. Are formed so as to be arranged at predetermined intervals. In this way, when the reversing operation of the tact metal plate is repeated, it is possible to prevent a situation in which the cuts of the two slits extend from the ends and are finally connected. When such a situation occurs, there arises a problem that the tact metal plate is easily moved.
【0008】またクリック感を増大させるために、中央
部接点から延びるジャンパ線の上にオーバーコートを形
成し、このオーバーコートの上にタクト金属板の周縁部
の一部を当接させる構成を採用した場合には、タクト金
属板の反転量が増大する。このような場合に、2本のス
リットの一方をオーバーコートと上下関係において交差
するように形成すると、非操作時において交差する側の
スリットは広がり、交差しない側のスリットは閉じる傾
向にある。その結果、2本のスリットの近傍におけるタ
クト金属板と絶縁カバー部材との接合力に大きな差が生
じ、2本のスリット間に位置する絶縁カバー部材の部分
の追従動作に支障が生じて、その部分とタクト金属板と
の間の接合が剥がれ易くなる。これに対して、2本のス
リットの間にオーバーコートが位置するように絶縁カバ
ー部材を基板に対して配置すると、2本のスリットの近
傍におけるタクト金属板と絶縁カバー部材との接合力に
大きな差が生じることがなく、このような問題は発生し
ない。In order to increase the click feeling, a configuration is adopted in which an overcoat is formed on a jumper line extending from the center contact, and a part of the peripheral portion of the tact metal plate is brought into contact with the overcoat. In this case, the amount of reversal of the tact metal plate increases. In such a case, if one of the two slits is formed so as to intersect the overcoat in an up-down relationship, the slit on the intersecting side is widened when not operating, and the slit on the non-intersecting side tends to close. As a result, there is a large difference in the joining force between the tact metal plate and the insulating cover member in the vicinity of the two slits, which hinders the following operation of the portion of the insulating cover member located between the two slits. Bonding between the portion and the tact metal plate is easily peeled off. On the other hand, when the insulating cover member is arranged on the substrate such that the overcoat is located between the two slits, the joining force between the tact metal plate and the insulating cover member near the two slits is large. There is no difference and such a problem does not occur.
【0009】2本のスリットを平行に延びるように形成
すると、2本のスリット間に位置する絶縁カバー部材の
部分の追従動作が最もスムーズになる。When the two slits are formed so as to extend in parallel, the following operation of the portion of the insulating cover member located between the two slits becomes the smoothest.
【0010】なおタクト金属板は、皿状部だけからなる
ものでもよく、また皿状部の外側にフランジ部を有する
ものでもよい。[0010] The tact metal plate may be composed only of a dish-shaped portion, or may have a flange portion outside the dish-shaped portion.
【0011】[0011]
【発明の実施の形態】以下図面を参照して、本発明の実
施例を詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【0012】図1(A)は本発明の一実施例のプッシュ
オン式スイッチを、携帯用ステレオの音量調整回路に使
用した場合の概略側面図、図1(B)はその概略裏面図
である。また図2(A)は図1(B)のA−A線断面図
であり、図2(B)は図1(B)のB−B線断面図であ
る。また図3は、スイッチの構造を説明するために想像
線を用いて示したスイッチ単体の平面図である。これら
の図において、1は絶縁性を有する回路基板である。な
お可撓性を有するフレキシブル基板が用いられることも
ある。基板1の上には、銅箔または銀塗料若しくはカー
ボン等の導電性塗料を用いて所定の回路パターンが形成
されている。図1(A)及び(B)には回路パターンを
図示していないが、図2及び図3に示すように回路パタ
ーンの中にはスイッチの接点パターンも含まれている。
図2及び図3において、2は中央部接点であり、3は端
部接点、4a及び4bはジャンパ線である。中央部接点
2に接続されたジャンパ線4b上にはエポキシ樹脂等の
適宜の絶縁材料を用いてオーバーコート5が施されてい
る。本実施例では、このオーバーコート5の厚みを、5
0μm程度として、公知のスイッチで用いられる平均的
なオーバーコートの厚み(約10μm程度)のほぼ5倍
にしている。厚みの厚いオーバーコート5の上に後述す
るタクト金属板の一部を載せると、クリック感が大きく
なる。なお図2及び図3においては、理解を容易にする
ために各部を多少誇張して描いている。FIG. 1A is a schematic side view when the push-on switch of one embodiment of the present invention is used in a portable stereo volume control circuit, and FIG. 1B is a schematic rear view thereof. . 2A is a cross-sectional view taken along line AA of FIG. 1B, and FIG. 2B is a cross-sectional view taken along line BB of FIG. 1B. FIG. 3 is a plan view of a single switch shown using imaginary lines to explain the structure of the switch. In these figures, reference numeral 1 denotes a circuit board having an insulating property. Note that a flexible substrate having flexibility may be used. A predetermined circuit pattern is formed on the substrate 1 using a conductive paint such as copper foil, silver paint, or carbon. Although a circuit pattern is not shown in FIGS. 1A and 1B, as shown in FIGS. 2 and 3, the circuit pattern includes a contact pattern of a switch.
2 and 3, reference numeral 2 denotes a center contact, reference numeral 3 denotes an end contact, and reference numerals 4a and 4b denote jumper wires. An overcoat 5 is formed on the jumper wire 4b connected to the center contact 2 using an appropriate insulating material such as epoxy resin. In this embodiment, the thickness of the overcoat 5 is set to 5
The thickness is about 0 μm, which is about five times the average overcoat thickness (about 10 μm) used in a known switch. When a part of a tact metal plate, which will be described later, is placed on the thick overcoat 5, the click feeling increases. In FIG. 2 and FIG. 3, each part is somewhat exaggerated for easy understanding.
【0013】6は、基板1から離れる方向に向かって突
出するように湾曲した反転動作可能な皿状部だけから構
成されるタクト金属板である。タクト金属板6は、その
周縁部6aの一部が端部接点3と常時接触するようにし
て基板1上に載置されている。7は、絶縁性及び可撓性
を有する絶縁カバー部材であり、例えばポリエステル・
シート等を用いて形成することができる。本実施例で
は、平板状のポリエステル・シートを基板1に形成した
回路パターンに合わせて切断したものを絶縁カバー部材
7として用いている。なお組立時の位置決めを容易にす
るためには、絶縁カバー部材7として透明または半透明
のものを用いるのが好ましい。本実施例では、絶縁カバ
ー部材7のタクト金属板6に対応する部分に、2本のス
リット8,8が所定の間隔を開けて並ぶように形成して
あり、このスリット8の両端部をタクト金属板6の周縁
部6aを越える位置まで延ばしている。図2及び図3に
おいては、スリット8の間隙幅寸法を誇張して描いてあ
るが、これらのスリット8は、絶縁カバー部材7を刃物
で切って形成したものであり、実際には僅かなものであ
る。Reference numeral 6 denotes a tact metal plate formed of only a reversible dish-shaped portion curved so as to protrude in a direction away from the substrate 1. The tact metal plate 6 is placed on the substrate 1 such that a part of the peripheral edge 6 a is always in contact with the end contact 3. Reference numeral 7 denotes an insulating cover member having insulating properties and flexibility.
It can be formed using a sheet or the like. In this embodiment, a flat polyester sheet cut according to the circuit pattern formed on the substrate 1 is used as the insulating cover member 7. In order to facilitate positioning during assembly, it is preferable to use a transparent or translucent insulating cover member 7. In the present embodiment, two slits 8, 8 are formed in a portion corresponding to the tact metal plate 6 of the insulating cover member 7 so as to be arranged at a predetermined interval, and both ends of the slit 8 are tact. The metal plate 6 extends to a position beyond the peripheral edge 6a. In FIGS. 2 and 3, the gap width of the slits 8 is exaggerated, but these slits 8 are formed by cutting the insulating cover member 7 with a cutting tool. It is.
【0014】絶縁カバー部材7の裏面には、粘着剤9が
塗布されており、絶縁カバー部材7とタクト金属板6と
は、この粘着剤9を介して相互に接合されている。粘着
剤9は、硬化せずに粘着性と保持力とを持って絶縁カバ
ー部材7とタクト金属板6の変形にある程度追従できる
ものであればよい。本実施例では、粘着剤9としてFS
K株式会社がPLシンの商標名で販売しているアクリル
系の粘着剤を用いた。この粘着剤は、透明性に優れ、剥
離しても再度所定の押圧力が加われば被接合体に再接合
する。An adhesive 9 is applied to the back surface of the insulating cover member 7, and the insulating cover member 7 and the tact metal plate 6 are joined to each other via the adhesive 9. The pressure-sensitive adhesive 9 may be any as long as it can adhere to the deformation of the insulating cover member 7 and the tact metal plate 6 to a certain extent without being cured and having tackiness and holding power. In this embodiment, FS is used as the adhesive 9.
An acrylic pressure-sensitive adhesive sold by K Corporation under the trade name of PL SIN was used. This pressure-sensitive adhesive is excellent in transparency, and re-joins to the joined object when a predetermined pressing force is applied again even after peeling.
【0015】2本のスリット8,8は、タクト金属板6
の変形に絶縁カバー部材7の変形を追従させて、タクト
金属板を所定位置に保持させる変形促進溝部として設け
られている。2本のスリット8,8に挾まれた絶縁カバ
ー部材7の部分7aは、両端が基板1に粘着剤9で固定
された構造となっており、変形の自由度が高い。したが
って、タクト金属板6が押圧されて変形する場合に、粘
着剤9の粘着力または保持力があまりない場合や、経年
変化により粘着剤9の保持力が低下した場合に、スリッ
ト8の外側に位置する絶縁カバー部材7の部分7bとタ
クト金属板6との接合が剥がれることがあっても、部分
7aとタクト金属板6との接合が剥がれることは殆どな
い。特に本実施例のように、スリット8の両端をタクト
金属板6の周縁部6aを越える位置まで十分に延ばす
と、部分7aの変形が容易になる。また、スリット8の
一部を通してタクト金属板6と基板1との間に形成され
た空間の空気を外部に抜くことができ、良好に空気抜き
を行える。The two slits 8, 8 are provided in the tact metal plate 6
The deformation of the insulating cover member 7 follows the deformation of the insulating cover member 7, and is provided as a deformation promoting groove for holding the tact metal plate at a predetermined position. The portion 7a of the insulating cover member 7 sandwiched between the two slits 8, 8 has a structure in which both ends are fixed to the substrate 1 with an adhesive 9, and has a high degree of freedom in deformation. Therefore, when the tact metal plate 6 is pressed and deformed, when the adhesive force or the holding force of the adhesive 9 is not so large, or when the holding force of the adhesive 9 is reduced due to aging, the outside of the slit 8 is formed. Even if the joint between the portion 7b of the insulating cover member 7 and the tact metal plate 6 may come off, the connection between the portion 7a and the tact metal plate 6 hardly comes off. In particular, as in the present embodiment, when the both ends of the slit 8 are sufficiently extended to positions beyond the peripheral edge 6a of the tact metal plate 6, the deformation of the portion 7a is facilitated. In addition, the air in the space formed between the tact metal plate 6 and the substrate 1 can be evacuated to the outside through a part of the slit 8, and air can be satisfactorily evacuated.
【0016】図1(A)及び(B)において、10は上
記実施例の構造のプッシュオン式スイッチであり、11
は可変抵抗器、12はトランジスタ等の電子部品であ
る。図1の回路装置を組み立てる場合の工程について説
明する。1A and 1B, reference numeral 10 denotes a push-on switch having the structure of the above embodiment,
Denotes a variable resistor, and 12 denotes an electronic component such as a transistor. Steps for assembling the circuit device of FIG. 1 will be described.
【0017】まず所定の接点パターンを裏面に備えた回
路基板1を製造する。回路基板には少なくとも2箇所に
位置決め用の凹部または孔1aを形成しておく。また必
要なオーバーコート5も予め基板1上に形成しておく。
そして位置決め用の2本の突起を有する治具(図示せ
ず。)上に、突起に基板1の孔1aを挿入しながら可変
抵抗器11を下側に向けて基板1を載置する。次に裏面
に粘着剤9を塗布した絶縁カバー部材7のスリット8を
形成してある部分に、タクト金属板6を張り付ける。そ
して絶縁カバー部材7の粘着剤9を塗布した面を基板1
の裏面上に張り付ける。絶縁カバー部材7には、基板1
の孔1aに対応して設けた位置決め用の孔または凹部7
cが形成してあり、この凹部7cを治具の突起に嵌合さ
せて絶縁カバー部材7を基板1側に下ろせば、タクト金
属板6を基板1の所定の接点パターンの上に位置決めす
ることができる。絶縁カバー部材7を基板1上に載置し
た後は、両者間に所定の圧力を加えて絶縁カバー部材7
を基板1に接合させ、基板1を治具から離して組み立て
が完了する。First, a circuit board 1 having a predetermined contact pattern on the back surface is manufactured. At least two concave portions or holes 1a for positioning are formed on the circuit board. The necessary overcoat 5 is also formed on the substrate 1 in advance.
Then, the substrate 1 is placed on a jig (not shown) having two positioning projections with the variable resistor 11 facing downward while inserting the holes 1a of the substrate 1 into the projections. Next, a tact metal plate 6 is attached to a portion of the insulating cover member 7 where the slit 8 is formed on the back surface of which the adhesive 9 is applied. Then, the surface of the insulating cover member 7 coated with the adhesive 9 is
On the back of The insulating cover member 7 includes the substrate 1
Positioning hole or concave portion 7 provided corresponding to hole 1a of
When the insulating cover member 7 is lowered toward the substrate 1 by fitting the concave portion 7c to the projection of the jig, the tact metal plate 6 is positioned on a predetermined contact pattern of the substrate 1. Can be. After placing the insulating cover member 7 on the substrate 1, a predetermined pressure is applied between the two to apply the insulating cover member 7
Is bonded to the substrate 1, and the substrate 1 is separated from the jig to complete the assembly.
【0018】図4には、本発明をフランジ部付のタクト
金属板を備えたスイッチに適用した場合の実施例であ
る。図4において、15はオーバーコート、16はフラ
ンジ部付のタクト金属板、28はスリットである。本実
施例のようにフランジ部付のタクト金属板16を用いる
と、タクト金属板の位置決めが容易になる。しかしなが
ら空気抜きがしにくくなるため、本実施例では空気抜き
を容易に行なわせるために、スリット28に対応させて
フランジ部16Bの外周縁部に切欠部16C…を形成
し、また皿状部16Aとフランジ部16Bとに跨がって
窓部16D…を形成してある。これらの切欠部16C及
び窓部16Dによって、空気抜きがよりスムーズにな
る。本実施例では、スリット28,28を外側に曲げ中
心部が向くように曲がった形状(広角V字形状)として
いる。これにより、2本のスリット28,28間に挾ま
れる絶縁カバー部材7の部分7aの面積を大きくしてい
る。また本実施例では、オーバーコート15をタクト金
属板16のフランジ部16aの辺に対応させて大きく形
成してあり、その厚みは図2及び図3の実施例と同様
に、通常の5倍程度の厚みとしている。このようにする
と、皿状部だけからなるタクト金属板と比べてクリック
感が小さくなり易いフランジ部付のタクト金属板を用い
て、比較的大きなクリック感を得ることができる。FIG. 4 shows an embodiment in which the present invention is applied to a switch having a tact metal plate with a flange portion. In FIG. 4, 15 is an overcoat, 16 is a tact metal plate with a flange, and 28 is a slit. When the tact metal plate 16 with the flange portion is used as in this embodiment, the positioning of the tact metal plate becomes easy. However, in this embodiment, notches 16C are formed in the outer peripheral edge of the flange portion 16B so as to correspond to the slits 28, so that air can be easily removed. Window portions 16D are formed so as to extend over the portion 16B. The notch 16C and the window 16D make air bleeding smoother. In the present embodiment, the slits 28, 28 are bent outward (broad-angle V-shape) so as to face the center. Thereby, the area of the portion 7a of the insulating cover member 7 sandwiched between the two slits 28, 28 is increased. Further, in this embodiment, the overcoat 15 is formed to be large corresponding to the side of the flange portion 16a of the tact metal plate 16, and its thickness is about five times the normal thickness, as in the embodiments of FIGS. Thickness. With this configuration, a relatively large click feeling can be obtained by using a tact metal plate with a flange portion that tends to have a small click feeling compared to a tact metal plate having only a dish-shaped portion.
【0019】粘着剤で絶縁カバー部材とタクト金属板と
を接合すれば、絶縁カバー部材をタクト金属板に追従さ
せて変形させることができる。しかしながら長期に渡っ
て頻繁にスイッチ動作が行われると、粘着剤の粘着性及
び接着性が低下して、絶縁カバー部材をタクト金属板に
追従させて変形させることができなくなる事態が発生す
ることも予想される。そこで本実施例のように、絶縁カ
バー部材のタクト金属板に対応する部分に、2本のスリ
ットを所定の間隔を開けて並ぶように形成し、該スリッ
トの両端部をタクト金属板の周縁部を越える位置まで延
ばすと、絶縁カバー部材の2本のスリットの間に位置す
る部分は両端が固定されただけの状態になる。スリット
を形成せずに周囲全部を固定した場合に比べて、スリッ
トに挾まれたこの両端が固定された部分の自由度は高
い。したがって長期に渡って且つ頻繁にスイッチ操作が
行われる場合でも、絶縁カバー部材の一部をタクト金属
板の変形に確実に追従させることができ、タクト金属板
を所定位置に保持できる。またこのスリットは、空気抜
きの機能も果たすため、スイッチの操作性が向上する。
特に、スリットを形成すると、スリットを通して空気抜
きをスムーズに行わせることができる。If the insulating cover member and the tact metal plate are joined with an adhesive, the insulating cover member can be deformed by following the tact metal plate. However, if the switch operation is frequently performed over a long period of time, the adhesiveness and adhesiveness of the adhesive may decrease, and a situation may occur in which the insulating cover member cannot be deformed by following the tact metal plate. is expected. Therefore, as in the present embodiment, two slits are formed in a portion corresponding to the tact metal plate of the insulating cover member so as to be arranged at a predetermined interval, and both ends of the slit are formed at the peripheral edge of the tact metal plate. Is extended to a position beyond the above, the portion of the insulating cover member located between the two slits is in a state where both ends are fixed. As compared with the case where the entire periphery is fixed without forming the slit, the degree of freedom of the portion where both ends are fixed between the slits is higher. Therefore, even when the switch operation is frequently performed over a long period of time, a part of the insulating cover member can reliably follow the deformation of the tact metal plate, and the tact metal plate can be held at a predetermined position. In addition, the slit also functions to release air, so that the operability of the switch is improved.
In particular, when a slit is formed, air can be smoothly vented through the slit.
【0020】更に本実施例によれば、スリットを含む変
形促進溝を絶縁カバー部材に設けることにより、長期に
渡って頻繁にスイッチ操作が行われる場合でも、絶縁カ
バー部材の一部をタクト金属板の変形に確実に追従させ
てタクト金属板を所定位置に保持することができる。ま
たタクト金属板と絶縁カバー部材とを粘着性を有する粘
着剤を介して接合しているため、絶縁カバー部材をタク
ト金属板に追従させて変形させることができ、タクト金
属板を所定の位置に確実に保持して、スイッチ動作を確
実に行わせることができる。Further, according to the present embodiment, by providing a deformation promoting groove including a slit in the insulating cover member, even when the switch operation is frequently performed for a long period of time, a part of the insulating cover member can be tact metal plate. The tact metal plate can be held in a predetermined position by reliably following the deformation of the tact metal plate. Also, since the tact metal plate and the insulating cover member are joined via an adhesive having an adhesive property, the insulating cover member can be deformed by following the tact metal plate, and the tact metal plate can be moved to a predetermined position. The switch operation can be reliably performed by reliably holding the switch.
【0021】[0021]
【発明の効果】本発明によれば、絶縁カバー部材のタク
ト金属板に対応する部分にタクト金属板の変形に絶縁カ
バー部材の変形を追従させてタクト金属板を所定位置に
保持させる2本のスリットを所定の間隔を開けて並べる
ように形成したので、タクト金属板の反転動作を繰り返
した場合においても、2本のスリットの切れが端部から
延びて、最終的につながってしまうような事態が発生す
るのを防止できる。According to the present invention, two portions of the insulating cover member corresponding to the tact metal plate are made to follow the deformation of the tact metal plate so that the deformation of the insulating cover member follows the tact metal plate to hold the tact metal plate at a predetermined position. Since the slits are formed so as to be spaced apart from each other at a predetermined interval, even if the reversing operation of the tact metal plate is repeated, the cuts of the two slits extend from the ends and eventually connect. Can be prevented from occurring.
【0022】また2本のスリットの間にオーバーコート
が位置するように絶縁カバー部材を基板に対して配置す
ると、2本のスリットの近傍におけるタクト金属板と絶
縁カバー部材との接合力に大きな差が生じることがな
く、絶縁カバー部材の追従をスムーズに行わせることが
できる。When the insulating cover member is disposed on the substrate such that the overcoat is located between the two slits, there is a large difference in the joining force between the tact metal plate and the insulating cover member near the two slits. Does not occur, and the insulating cover member can be smoothly followed.
【図1】(A)は本発明の一実施例のプッシュオン式ス
イッチを備えた回路装置の側面図、(B)は図1(A)
の装置の裏面図である。FIG. 1A is a side view of a circuit device provided with a push-on switch according to one embodiment of the present invention, and FIG.
It is a rear view of the apparatus of FIG.
【図2】(A)は図1(B)のA−A線断面図であり、
図2(B)は図1(B)のB−B線断面図である。FIG. 2A is a sectional view taken along line AA of FIG. 1B;
FIG. 2B is a cross-sectional view taken along line BB of FIG.
【図3】本発明の一実施例のプッシュオン式スイッチの
構成を説明するための透視図である。FIG. 3 is a perspective view for explaining a configuration of a push-on switch according to one embodiment of the present invention.
【図4】本発明をフランジ部付のタクト金属板を備えた
スイッチに適用した場合の実施例を説明するための透視
図である。FIG. 4 is a perspective view for explaining an embodiment in which the present invention is applied to a switch having a tact metal plate with a flange portion.
1 回路基板 2 中央部接点 3 端部接点 5,15 オーバーコート 6,16 タクト金属板 6a タクト金属板の周縁部 7 絶縁カバー部材 8,28 スリット 9 粘着剤 10 プッシュオン式スイッチ DESCRIPTION OF SYMBOLS 1 Circuit board 2 Center contact 3 End contact 5,15 Overcoat 6,16 Tact metal plate 6a Peripheral edge of tact metal plate 7 Insulating cover member 8,28 Slit 9 Adhesive 10 Push-on switch
Claims (1)
性基板と、 周縁部の一部が前記端部接点と当接するように前記基板
上に配置されかつ該基板から離れる方向に向かって突出
するように湾曲した反転動作可能な皿状部を有するタク
ト金属板と、 前記タクト金属板を前記絶縁性基板上の所定位置に保持
すべく前記タクト金属板を覆うようにして前記基板に固
定される絶縁カバー部材とを具備し、 前記タクト金属板と前記絶縁カバー部材とが粘着性を有
する粘着剤を介して接合されおり、 前記絶縁カバー部材の外側から前記皿状部が押圧される
と該皿状部のほぼ中央部が前記中央部接点と当接して前
記中央部接点と前記端部接点とが導通するプッシュオン
式スイッチにおいて、 前記絶縁カバー部材の前記タクト金属板に対応する部分
には前記タクト金属板の変形に前記絶縁カバー部材の変
形を追従させて前記タクト金属板を所定位置に保持させ
る2本のスリットが所定の間隔を開けて並ぶように形成
されており、 前記2本のスリットは平行に延びるように形成されてい
ることを特徴とする請求項1または2に記載のプッシュ
オン式スイッチ。いることを特徴とするプッシュオン式
スイッチ。An insulative substrate having a central contact and an end contact formed thereon, and a part of a peripheral portion is disposed on the substrate so as to abut the end contact, and faces in a direction away from the substrate. A tact metal plate having a reversible dish-shaped portion curved so as to protrude therefrom; and covering the tact metal plate so as to cover the tact metal plate so as to hold the tact metal plate at a predetermined position on the insulating substrate. A fixed insulating cover member, wherein the tact metal plate and the insulating cover member are joined via an adhesive having an adhesive property, and the dish-shaped portion is pressed from outside the insulating cover member. And a push-on switch in which a substantially central portion of the dish-shaped portion is in contact with the center portion contact and the center portion contact and the end portion contact are conducted. A portion of the insulating cover member corresponding to the tact metal plate To The two slits for keeping the tact metal plate at a predetermined position by causing the deformation of the insulating cover member to follow the deformation of the tact metal plate are formed so as to be arranged at a predetermined interval, and the two slits are formed. The push-on switch according to claim 1, wherein the slit is formed to extend in parallel. A push-on switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07782099A JP3283484B2 (en) | 1999-03-23 | 1999-03-23 | Circuit device with push-on switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP07782099A JP3283484B2 (en) | 1999-03-23 | 1999-03-23 | Circuit device with push-on switch |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9256690A Division JP3010151B2 (en) | 1997-09-22 | 1997-09-22 | Push-on switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11317126A true JPH11317126A (en) | 1999-11-16 |
JP3283484B2 JP3283484B2 (en) | 2002-05-20 |
Family
ID=13644685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP07782099A Expired - Lifetime JP3283484B2 (en) | 1999-03-23 | 1999-03-23 | Circuit device with push-on switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3283484B2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01100333U (en) * | 1987-12-25 | 1989-07-05 | ||
JPH01119131U (en) * | 1988-02-05 | 1989-08-11 | ||
JP3010151B2 (en) * | 1997-09-22 | 2000-02-14 | 北陸電気工業株式会社 | Push-on switch |
-
1999
- 1999-03-23 JP JP07782099A patent/JP3283484B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01100333U (en) * | 1987-12-25 | 1989-07-05 | ||
JPH01119131U (en) * | 1988-02-05 | 1989-08-11 | ||
JP3010151B2 (en) * | 1997-09-22 | 2000-02-14 | 北陸電気工業株式会社 | Push-on switch |
Also Published As
Publication number | Publication date |
---|---|
JP3283484B2 (en) | 2002-05-20 |
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