JPH0713132Y2

JPH0713132Y2 - Push switch

Info

Publication number: JPH0713132Y2
Application number: JP1988167656U
Authority: JP
Inventors: 友博伊藤
Original assignee: エスエムケイ株式会社
Priority date: 1988-12-27
Filing date: 1988-12-27
Publication date: 1995-03-29
Anticipated expiration: 2003-12-27
Also published as: JPH0289732U

Description

【考案の詳細な説明】（産業上の利用分野）本考案は、検出用に使用して好適なプッシュスイッチの
改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a push switch suitable for use in detection.

（従来の技術）従来のこの種のプッシュスイッチとしては、メタルタク
トを用いたメタルタクトスイッチ、或はマイクロスイッ
チ等があった。(Prior Art) Conventional push switches of this type include a metal tact switch using a metal tact or a micro switch.

（考案が解決しようとする課題）しかしながら、メタルタクトスイッチでは、操作荷重が
大きくなるという問題点があった。(Problems to be solved by the invention) However, the metal tact switch has a problem that the operation load becomes large.

また、マイクロスイッチでは、部品点数が多く、形状が
大きくなるという問題点があった。Further, the micro switch has a problem that the number of parts is large and the shape is large.

本考案の目的は、軽操作荷重で操作でき、小型化が容易
で且つ部品点数の少ないプッシュスイッチを提供するこ
とにある。An object of the present invention is to provide a push switch which can be operated with a light operation load, can be easily downsized, and has a small number of parts.

（課題を解決するための手段）上記の目的を達成するため本考案のプッシュスイッチ
は、シーソー接触片がシーソー運動自在に収容されたス
イッチハウジングと、該スイッチハウジングを貫通して
一端が外方に突出した操作子と、この操作子と当接する
当接部と前記スイッチハウジングの内面に当接する支点
部と前記内面に設けられた固定接点に対向配置された可
動接点部とを備えたシーソー接触片と、前記スイッチハ
ウジング内に収容され、前記支点部を前記内面に常時当
接させるとともに前記操作子の押圧が解除されたときに
前記可動接点部を前記固定接点に接するようにシーソー
接触片を付勢する復帰スプリングとからなり、前記可動
接点部は前記シーソー接触片の前記当接部と前記支点部
との間に位置していることを特徴とする。(Means for Solving the Problems) In order to achieve the above object, a push switch according to the present invention comprises a switch housing in which a seesaw contact piece is housed so that the seesaw can move freely, and one end of the switch housing extends outwardly through the switch housing. A seesaw contact piece including a protruding operator, a contact portion that contacts the operator, a fulcrum portion that contacts the inner surface of the switch housing, and a movable contact portion that is arranged to face a fixed contact provided on the inner surface. And a seesaw contact piece that is housed in the switch housing and that keeps the fulcrum part in constant contact with the inner surface and contacts the movable contact part with the fixed contact when the pressure of the operator is released. The movable contact portion is located between the abutting portion and the fulcrum portion of the seesaw contact piece.

（作用）このようなプッシュスイッチは、シーソー接触片を梃の
原理を使ってシーソー動作させるので、軽操作荷重で操
作を行なうことができる。また、最小限の部品でスイッ
チを構成でき、組み立てが容易である。(Operation) Since such a push switch causes the seesaw contact piece to perform a seesaw operation using the principle of leverage, it can be operated with a light operation load. Further, the switch can be configured with a minimum number of parts, and the assembly is easy.

（実施例）以下本考案の実施例を図面を参照して詳細に説明する。Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

第１図乃至第４図に示すように本実施例のプッシュスイ
ッチは、カバー部１とケース部２とからなるスイッチハ
ウジング３を有し、該スイッチハウジング３内にはシー
ソー接触片４がシーソー運動自在に収容されている。As shown in FIGS. 1 to 4, the push switch according to the present embodiment has a switch housing 3 including a cover portion 1 and a case portion 2, and the seesaw contact piece 4 has a seesaw movement in the switch housing 3. It is freely accommodated.

シーソー接触片４は全体が黄銅をもって一体成形され、
表面に金メッキが施されている。該シーソー接触片４に
はその長手方向の端部に該スイッチハウジング３の一方
の内表面2Aに常時接触してシーソー運動の支点部となる
支点突部4Aを設けてある。該支点突部4Aが接触する側の
スイッチハウジング３の該一方の内表面2Aには固定接点
5,6を設け、支点突部4Aが固定接点５に常時接触してい
る。The seesaw contact piece 4 is integrally molded with brass,
The surface is gold-plated. The seesaw contact piece 4 is provided at its longitudinal end with a fulcrum protrusion 4A which is always in contact with one inner surface 2A of the switch housing 3 and serves as a fulcrum of the seesaw motion. A fixed contact is provided on the one inner surface 2A of the switch housing 3 on the side where the fulcrum protrusion 4A comes into contact.
5, 6 are provided, and the fulcrum protrusion 4A is constantly in contact with the fixed contact 5.

また、シーソー接触片４には、その長手方向の一端側に
固定接点６に対して接離する可動接点部4Bが設けてあ
る。シーソー接触片４の支点突部4Aとは反対側の端部
で、支点突部4Aおよび可動接点部4Bと同じ面側に、操作
子７の下端部が当接する当接部が設けてある。操作子７
は、スイッチハウジング３を貫通し、上端が外方に突出
していて下端がシーソー接触片４の当接部に当接するよ
うにスイッチハウジング３に組み込まれている。支点突
部4Aと操作子７との間でスイッチハウジング３内には、
シーソー接触片４の可動接点部4Bを固定接点６に接触さ
せる方向に付勢する復帰スプリングとなるスプリング８
が組込んである。スプリング８は、その一端がスイッチ
ハウジング３内の突起９の外周に嵌合し、その他端がシ
ーソー接触片４の突起10の外周に嵌合している。Further, the seesaw contact piece 4 is provided with a movable contact portion 4B which is brought into contact with and separated from the fixed contact 6 at one end side in the longitudinal direction thereof. On the end of the seesaw contact piece 4 opposite to the fulcrum protrusion 4A, on the same surface side as the fulcrum protrusion 4A and the movable contact 4B, an abutting portion with which the lower end of the operating element 7 abuts is provided. Operator 7
Is incorporated in the switch housing 3 so that it penetrates the switch housing 3, the upper end projects outward, and the lower end abuts the abutment portion of the seesaw contact piece 4. Between the fulcrum protrusion 4A and the operator 7, inside the switch housing 3,
A spring 8 serving as a return spring that urges the movable contact portion 4B of the seesaw contact piece 4 in a direction to contact the fixed contact 6
Is incorporated. The spring 8 has one end fitted to the outer periphery of the protrusion 9 in the switch housing 3, and the other end fitted to the outer periphery of the protrusion 10 of the seesaw contact piece 4.

このようなプッシュスイッチは、常時はスプリング８の
押圧作用で可動接点部4Bが固定接点６に接触して、両固
定接点5,6間がシーソー接触片４で短絡され、スイッチ
・オンの状態になっている。この状態で、操作子７を押
下すると、シーソー接触片４が支点突部4Aを中心として
シーソー運動をし、可動接点部4Bが固定接点６から離れ
る。In such a push switch, the movable contact portion 4B is normally brought into contact with the fixed contact 6 by the pressing action of the spring 8, and the fixed contact 5 and 6 are short-circuited by the seesaw contact piece 4 so that the switch is turned on. Has become. When the operator 7 is pressed down in this state, the seesaw contact piece 4 makes a seesaw motion around the fulcrum protrusion 4A, and the movable contact 4B separates from the fixed contact 6.

このようなプッシュスイッチは、第５図に示すような並
列の常閉スイッチ11,12の回路を容易に形成することが
できる。この場合、13はコモン端子、14,15は常閉スイ
ッチ11,12の各端子である。Such a push switch can easily form the circuit of the normally closed switches 11 and 12 in parallel as shown in FIG. In this case, 13 is a common terminal and 14 and 15 are terminals of the normally closed switches 11 and 12.

なお、支点突部4Aに対応した部分には固定接点５を設け
ず、可動接点部4Bに対応した箇所に固定接点5,6を並設
することもできる。The fixed contact 5 may not be provided in the portion corresponding to the fulcrum protrusion 4A, and the fixed contacts 5 and 6 may be provided in parallel at the portion corresponding to the movable contact portion 4B.

また上述の実施例ではシーソー接触片全体を導電材をも
って成形しているが、これを合成樹脂等の絶縁材で成形
し、可動接点部4A,4B部分にメッキ等によって導電部を
一体化させてもよいものである。Further, in the above-mentioned embodiment, the whole seesaw contact piece is molded with a conductive material, but this is molded with an insulating material such as synthetic resin, and the conductive portion is integrated with the movable contact portions 4A, 4B by plating or the like. Is also good.

（考案の効果）以上説明したように本考案に係るプシュスイッチにおい
ては、梃の原理を利用してシーソー接触片をシーソー動
作させるので、軽操作荷重で操作を行なうことができ
る。また、本考案によれば、一個の復帰スプリングによ
りシーソー接触片をシーソー動作させるので、最小限の
部品点数でスイッチを構成でき、組み立てが容易になる(Effect of the Invention) As described above, in the push switch according to the present invention, since the seesaw contact piece is operated by the seesaw using the lever principle, the push switch can be operated with a light operation load. Further, according to the present invention, since the seesaw contact piece is operated by the seesaw by one return spring, the switch can be configured with a minimum number of parts and the assembly is easy.

[Brief description of drawings]

第１図は本考案に係るプッシュスイッチの一実施例の縦
断面図、第２図及び第３図は本実施例のプッシュスイッ
チの平面図及び正面図、第４図は第２図の右側面図、第
５図はスイッチ回路図である。１……カバー部、２……ケース部、３……スイッチハウ
ジング、４……シーソー接触片、4A……支点突部、4B…
…可動接点部、5,6……固定接点、７……操作子、８…
…復帰スプリング。FIG. 1 is a vertical sectional view of an embodiment of a push switch according to the present invention, FIGS. 2 and 3 are plan and front views of the push switch of this embodiment, and FIG. 4 is a right side surface of FIG. 5 and 5 are switch circuit diagrams. 1 ... Cover part, 2 ... Case part, 3 ... Switch housing, 4 ... Seesaw contact piece, 4A ... Support point projection part, 4B ...
… Movable contact part, 5,6 …… Fixed contact, 7 …… Operator, 8…
... return spring.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献実開昭63−171932（ＪＰ，Ｕ) 実開昭60−3520（ＪＰ，Ｕ) 実願昭58−81037号（実開昭59− 186926号）の願書に添付した明細書及び図面の内容を撮影したマイクロフィルム（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Shou 63-171932 (JP, U) Seki 60-3520 (JP, U) Practical application Sho 58-81037 (Sho 59-186926) Microfilm (JP, U), which is a photograph of the details and drawings attached to the application

Claims

[Scope of utility model registration request]

1. A switch housing in which a seesaw contact piece is housed so that the seesaw can move freely, an operator penetrating the switch housing, and one end of which protrudes outward, an abutting portion abutting the operator and the switch. A seesaw contact piece having a fulcrum portion that contacts the inner surface of the housing and a movable contact portion that is arranged to face a fixed contact provided on the inner surface, and is housed in the switch housing, and the fulcrum portion is always on the inner surface. And a return spring that urges the seesaw contact piece so that the movable contact portion comes into contact with the fixed contact when the pressing of the operator is released while abutting.
The push switch, wherein the movable contact portion is located between the contact portion and the fulcrum portion of the seesaw contact piece.