JP2004227781A

JP2004227781A - Push switch

Info

Publication number: JP2004227781A
Application number: JP2003010359A
Authority: JP
Inventors: Yoshiyuki Yamawaki; 佳之山脇; Ryoji Ito; 良治伊藤
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2003-01-17
Filing date: 2003-01-17
Publication date: 2004-08-12
Anticipated expiration: 2023-01-17
Also published as: JP4203643B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push switch to enlarge a contact point pressure and enable opening and closing of high capacity. <P>SOLUTION: This push switch is provided with a push button 6 penetrated from outside into inside from one side face of an instrumental body and mounted in free pressing movement, a rotor 10 axially supported rotatably by a ceiling face of the instrumental body in parallel with a moving direction of the push button 6, a contact point terminal 3 having a fixed contact point 3a installed at the bottom face of the instrumental body, a movable contactor 5 having a U-shaped part formed in a nearly U shape, and having a movable contact point 5e installed at an extended piece 5d extended from one leg piece of the U-shaped part, a common terminal 4 in which a support part to support the movable contactor 5 in revolution at the bottom face of the instrumental body, and a reversal spring 11 in which one end part is mounted on the rotor 10, the other end part is inserted into the U-shaped part of the movable contactor 5, bending is inversed in response to a push operation of the push button 6 to have the movable contactor 5 rock, and by which the movable contact point 5e and the fixed contact point 3a are made to be contacted/separated. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、押し釦を押し操作して開閉部を開閉させるプッシュスイッチに関するものである。
【０００２】
【従来の技術】
従来この種のプッシュスイッチとして、例えば図３に示す構造のものがある（特許文献１にも同様の構造のスイッチが開示されている。）。
【０００３】
このプッシュスイッチは、一面が開口した略箱形のボディ１００と、ボディ１００の開口側に結合されるカバー１０１と、ボディ１００の一側面から内外に貫通して押動自在に装着されボディ１００内に配置された部位に孔１０２ａを有する押し釦１０２と、ボディ１００内に固定接点１０３ａを有する一端部が配設され他端部がボディ１００の底面を貫通し外部に突出した接点端子１０３と、略Ｕ字形に形成され一端に可動接点１０４ａを固着すると共に他端を短くカットして外側に折曲し舌片１０４ｂを設けた可動接触子１０４と、可動接触子１０４を揺動支点１０５ａを中心に揺動自在に支持すると共に一端部がボディ１００の底面を貫通し外部に突出した共通端子１０５と、一端部が可動接触子１０４の舌片１０４ｂに係止され他端部が押し釦１０２の孔１０２ａを通ってカバー１０１の裏面に設けた突起部１０１ａに係止されたコイル状の反転スプリング１０６と、押し釦１０２をボディ１００の外方へ突出させる方向に付勢する復帰スプリング１０７とを備えて構成される。
【０００４】
上記のように構成されたプッシュスイッチは、押し釦１０２の孔１０２ａの一側面１０２ｂで反転スプリング１０６を押すことで可動接触子１０４が図３において反時計方向に揺動し可動接点１０４ａが固定接点１０３ａに接触してオン状態となり、また、角孔１０２ａの側面１０２ｂと対向する側面１０２ｃで反転スプリング１０６を押すことで可動接触子１０４が図３において時計方向に揺動し可動接点１０４ａが固定接点１０３ａから開離してオフ状態となる。
【０００５】
【特許文献１】
特開平６−１３９８７０号公報
【０００６】
【発明が解決しようとする課題】
しかしながら、プッシュスイッチに限らず、スイッチ全般としてスイッチの接点圧力を決めるのは反転スプリングのスプリング力であり、従来例の場合は、可動接触子１０４の回転支点１０５ａと反転スプリング１０６の係止部の水平距離が小さく、また、反転スプリング１０６の力の方向を接点圧力が大きくなるような方向にすることは、限られた大きさの中では困難であった。
【０００７】
また、反転スプリング１０６がカバー１０１の固定された突起部１０１ａに係止されているため、可動接触子１０４が反転するための反転スプリングの撓みが規制され、このことも接点圧力を大きくすることが困難な原因となっていた。
【０００８】
以上のように接点圧力が大きくできないため、スイッチの定格電流を大きくすることが困難となっており、例えば定格電流が「１６Ａ」以上のプッシュスイッチが現在存在しない理由の１つとなっている。
【０００９】
本発明は上記問題点に鑑みて為されたものであって、その目的とするところは、接点圧力を大きくし高容量の開閉を可能とするプッシュスイッチを提供することにある。
【００１０】
【課題を解決するための手段】
上記目的を達成するために、請求項１記載のプッシュスイッチは、器体の一側面から内外に貫通して押動自在に装着された押し釦と、該押し釦の移動方向に並行する器体の天井面に回転自在に軸支された回転子と、器体の底面に固定接点を設けた導電材料からなる接点端子と、略コ字形に形成されたコ字部を有し前記コ字部の一方の脚片側に前記固定接点に対応する可動接点を設けた導電材料からなる可動接触子と、前記可動接触子を揺動自在に支持する支持部を器体の底面に設けた導電材料からなる共通端子と、一端部が前記回転子に装着され他端部が前記可動接触子の前記コ字部に挿入され、前記押し釦の押操作に連動して撓みを反転させて前記可動接触子を揺動させ、前記可動接点と前記固定接点とを接触／開離させるコイル状の反転スプリングとを備えたものとした。
【００１１】
【発明の実施の形態】
以下、本発明の一実施形態を図１および図２を用いて説明する。
【００１２】
図１（ａ），（ｂ）は本実施形態のプッシュスイッチの縦断面図を、図２は本実施形態のプッシュスイッチの分解斜視図を示す。
【００１３】
このプッシュスイッチは、合成樹脂により一面が開口した略箱形に成形されたボディ１と、ボディ１の開口側に結合されるカバー２とから器体が作製される。
【００１４】
ボディ１とカバー２とは、ボディ１の一側面に設けた組立爪１ａと、カバー２の一側面に突設された舌片２ａに穿孔された組立孔２ｂとが凹凸嵌合することにより結合される。
【００１５】
ボディ１の内部は、隔壁１ｂにより長方形状の２つの収納室１Ａ，１Ｂに分離されている。
【００１６】
収納室１Ａ，１Ｂの底面の長手方向の一方には接点端子３，３が配設される。
【００１７】
接点端子３，３は導電材料からなり、略Ｌ字形に形成されており、短い方の脚片の外側面には固定接点３ａ，３ａが設けられ、固定接点３ａ，３ａをボディ１の底面に配設する共に長い方の脚片の先端３ｂをボディ１の底面から外部に貫通させた状態に取り付けられる。
【００１８】
収納室１Ａ，１Ｂの底面の長手方向の他方には共通端子４，４が配設される。
【００１９】
共通端子４，４は、導電材料からなり、略Ｌ字形に形成されており、短い方の脚片の先端が二股部４ａ，４ａに分かれて外側に折曲され、後述する可動接触子５を揺動自在に支持する支持部を形成している。
【００２０】
共通端子４，４は、二股部４ａ，４ａからなる支持部をボディ１の底面に配設すると共に長い方の脚片の先端４ｂをボディ１の底面から外部に貫通させた状態に取り付けられる。
【００２１】
可動接触子５，５は、中央片５ａと、中央片５ａの両端縁から中央片５ａと略直角となる方向にそれぞれ突出する両脚片５ｂ，５ｃとからなる略コ字形に形成されたコ字部を有している。
【００２２】
一方の脚片５ｂの先端からは延設片５ｄが延設され、延設片５ｄは一度、中央片５ａの方向へと略円弧状に折曲された後、中央片５ａの斜め上方へと折曲され、延設片５ａの先端の中央片５ａ側の面に可動接点５ｅを設けている。
【００２３】
また、中央片５ａの両脚片５ｂ，５ｃと並行する方向の両端部には切り欠き５ｆ，５ｆが設けられている。
【００２４】
可動接触子５，５は、切り欠き５ｆ，５ｆから共通端子４，４の二股部４ａ，４ａをコ字部の内側に突出させた状態に配置され、共通端子４，４の二股部４ａ，４ａからなる支持部に揺動自在に支持される。
【００２５】
ボディ１の接点端子３が配設された側の側面と対向する側の側面には、ボディ１の開口側の端縁から切り欠き１ｃが設けられ、切り欠き１ｃを介して押し釦６が押動自在に装着される。
【００２６】
押し釦６は、底面および長手方向の一側面が開口した略直方体形状の操作体６ａを有し、操作体６ａの上面から前記開口した一側面の方向へ延設部６ｂが延設され、延設部６ｂの両側に角孔６ｄ，６ｄを有する腕体６ｃ，６ｃが突出した略Ｔ字形の形状に成形される。
【００２７】
夫々の角孔６ｄ，６ｄの延設部６ｂに沿った両内側面の対向する位置には、凸部６ｆ，６ｆが突設される。
【００２８】
押し釦６は、操作体６ａの内部に復帰スプリング７を収納し、復帰スプリング７の一端を前記開口した一側面を通してボディ１の切り欠き１ｃの下方に設けられた凸部１ｄに係止させた状態で、各腕体６ｃ，６ｃをボディ１の内部に収納して配置される。
【００２９】
また、押し釦６の延設部６ｂのカバー２側の面にはハート形カム部６ｅが形成されている。
【００３０】
ロックピン８は、線状の金属により中央片８ａと両脚片８ｂ，８ｃとからなる略コ字形に形成され、一方の脚片８ｂをボディ１の接点端子３が配設された側の側面の開口側の端縁付近に設けた孔１ｅに回動自在に軸支させ、他方の脚片８ｃをハート形カム部６ｅの外周部に沿って摺動させる。
【００３１】
押さえばね９は、一端部に設けた孔９ａがカバー２の裏面に設けた凸部２ｃに取着され、他端部でロックピン８を常にハート形カム部６ｅの方向に付勢する。
【００３２】
回転子１０は、押し釦６の移動方向に並行するカバー２の裏面に設けられた軸受け２ｄにより回転自在に軸支される。また、カバー２がボディ１に結合された際にボディ１側となる面に凸部１０ａが設けられている。
【００３３】
コイル状の反転スプリング１１は、その径が押し釦６の角孔６ｄ，６ｄに設けられた２つの凸部６ｆ，６ｆ間の間隔よりも大きく形成され、一端部が回転子１０の凸部１０ａに装着され、他端部が押し釦６の角孔６ｄ，６ｄの凸部６ｆ，６ｆと、角孔６ｄ，６ｄの操作体６ａ側の内側面６ｇ，６ｇとの間を通った後に可動接触子５の前記コ字部に挿入される。
【００３４】
上記のように構成されたプッシュスイッチは、詳しくは省略するが、取り付け穴１２ａ，１２ａを有する取付金具１２によりプリント板等に取着される。
【００３５】
次に、このプッシュスイッチの動作について説明する。
【００３６】
押し釦６を押圧しない初期状態（オフ状態）では、図１（ａ）に示すように、押し釦６が復帰スプリング７によりボディ１の外側方向へと付勢された状態でボディ１から外部に突出している。
【００３７】
また、反転スプリング１１，１１は、図１（ａ）において、略逆く字形に撓んでおり、反転スプリング１１，１１の他端部が挿入された可動接触子５，５は、反転スプリング１１，１１にコ字部の他方の脚片５ｃが内側から押されて付勢され、可動接触子５，５の中央片５ａ，５ａがボディ１の底面と並行となり、中央片５ａの斜め上方に位置する可動接点５ｅ，５ｅは、固定接点３ａ，３ａから開離した状態となる。この時の接点間隔ｘは、３ｍｍ以上となっている。
【００３８】
次に、押し釦６の操作部６ａの先端が押し操作されると、反転スプリング１１，１１が押し釦６の角孔６ｄ，６ｄの操作体６ａ側の内側面６ｇ，６ｇに押圧され、それと連動して反転スプリング１１，１１の他端部が挿入された可動接触子５，５が共通端子４，４の二股部４ａ，４ａを支点として図１（ａ）において反時計方向へと回転していく。また、反転スプリング１１，１１の一端部が装着された回転子１０，１０は、図１（ａ）において時計方向へと回転していく。
【００３９】
ある時点で、反転スプリング１１，１１は死点を越えると撓みが反転し、可動接触子５，５をスナップアクション的に回転させ、図１（ｂ）に示すように可動接点５ｅ，５ｅと固定接点３ａ，３ａとが接触し、プッシュスイッチがオン状態となる。この時、反転スプリング１１，１１は、略く字形に撓んでいる。
【００４０】
このオン状態において、図１（ｂ）に示すように可動接触子５，５のコ字部の一方の脚片５ｂには反転スプリング１１，１１が当接しており、コ字部を内側から押圧し、可動接点５ｅと固定接点３ａとの接点圧力が大きくなる方向に可動接触子５，５を付勢している。
【００４１】
この状態はロックピン８がハート形カム６ｅに係止することにより保持される。
【００４２】
ロックピン８のロック状態が解除されると、押し釦６は復帰スプリング７の付勢力によりボディ１の外側方向へと移動する。この時、反転スプリング１１，１１は押し釦６の角孔６ｄ，６ｄの凸部６ｆ，６ｆにより押し釦６の移動方向へと押圧され、それと連動して可動接触子５，５が共通端子４，４の二股部４ａ，４ａを支点として図１（ｂ）において時計方向へと回転していく。また、回転子１０，１０は、図１（ｂ）において反時計方向へと回転していく。
【００４３】
ある時点で、反転スプリング１１，１１は死点を越えると撓みが反転し、可動接触子５，５をスナップアクション的に回転させ、図１（ａ）に示すように可動接点５ｅ，５ｅと固定接点３ａ，３ａとが開離し、プッシュスイッチがオフ状態となる。この時、反転スプリング１１，１１は、略逆く字形に撓んでいる。
【００４４】
かかるプッシュスイッチにおいては、反転スプリング１１，１１の一端部を回転子１０，１０に装着したことにより反転スプリング１１，１１の撓みの変化がスムーズになると共に、反転スプリング１１，１１の他端部を可動接触子５，５の前記コ字部に挿入したことによりスイッチがオン状態となったときに反転スプリング１１，１１の撓みが可動接触子５，５のコ字部を内側から押圧し、可動接点５ｅと固定接点３ａとの接点圧力が大きくなる方向に可動接触子５，５を付勢するので、接点圧力を大きくすることができ、高容量の開閉が可能となる。
【００４５】
【発明の効果】
請求項１記載のプッシュスイッチは、器体の一側面から内外に貫通して押動自在に装着された押し釦と、該押し釦の移動方向に並行する器体の天井面に回転自在に軸支された回転子と、器体の底面に固定接点を設けた導電材料からなる接点端子と、略コ字形に形成されたコ字部を有し前記コ字部の一方の脚片側に前記固定接点に対応する可動接点を設けた導電材料からなる可動接触子と、前記可動接触子を揺動自在に支持する支持部を器体の底面に設けた導電材料からなる共通端子と、一端部が前記回転子に装着され他端部が前記可動接触子の前記コ字部に挿入され、前記押し釦の押操作に連動して撓みを反転させて前記可動接触子を揺動させ、前記可動接点と前記固定接点とを接触／開離させるコイル状の反転スプリングとを備えたので、前記反転スプリングの一端部を前記回転子に装着したことにより前記反転スプリングの撓みがスムーズになると共に、前記反転スプリングの他端部を前記可動接触子の前記コ字部に挿入したことにより、前記押し釦が押操作され前記反転スプリングの撓みが反転して前記可動接点と前記固定接点とが接触すると、前記反転スプリングの撓みが前記可動接触子のコ字部を内側から押圧し前記可動接点と前記固定接点との接点圧力を高めるので、高容量の開閉が可能になるという効果がある。
【図面の簡単な説明】
【図１】（ａ）本実施形態のプッシュスイッチのオフ時の縦断面図である。
（ｂ）同上のプッシュスイッチのオン時の縦断面図である。
【図２】（ａ）同上の分解斜視図である。
（ｂ）同上のカバーの裏面の分解斜視図である。
【図３】従来例のプッシュスイッチの縦断面図である。
【符号の説明】
１ボディ
２カバー
３接点端子
３ａ固定接点
４共通端子
５可動接触子
５ｅ可動接点
６押し釦
７復帰スプリング
８ロックピン
９押さえばね
１０回転子
１１反転スプリング[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a push switch for opening and closing an open / close unit by pressing a push button.
[0002]
[Prior art]
Conventionally, as this type of push switch, for example, there is a push switch having a structure shown in FIG. 3 (a switch having a similar structure is disclosed in Patent Document 1).
[0003]
The push switch includes a substantially box-shaped body 100 having an opening on one side, a cover 101 coupled to the opening side of the body 100, and a push switch penetrating from one side to inside and outside of the body 100 so as to be capable of being pushed. A push button 102 having a hole 102a at a portion disposed on the other end; a contact terminal 103 having one end having a fixed contact 103a disposed inside the body 100 and the other end penetrating through the bottom surface of the body 100 and protruding outside; A movable contact 104 having a substantially U-shape and having a movable contact 104a fixed to one end and having the other end cut short and bent outward to provide a tongue 104b; and a movable contact 104 centered on a swing fulcrum 105a. And a common terminal 105 having one end penetrating through the bottom surface of the body 100 and protruding to the outside, and one end locked by a tongue piece 104b of the movable contact 104. Is pressed through a hole 102a of the push button 102 and in a coiled reversing spring 106 locked on a projection 101a provided on the back surface of the cover 101, and biases the push button 102 in a direction to protrude outward from the body 100. A return spring 107 is provided.
[0004]
In the push switch configured as described above, the movable contact 104 swings counterclockwise in FIG. 3 by pressing the reversing spring 106 with one side surface 102b of the hole 102a of the push button 102, and the movable contact 104a is fixed. The movable contact 104 swings clockwise in FIG. 3 by pressing the reversing spring 106 on the side surface 102c facing the side surface 102b of the square hole 102a, and the movable contact 104a is fixed. It is separated from 103a and turned off.
[0005]
[Patent Document 1]
JP-A-6-139870
[Problems to be solved by the invention]
However, it is the spring force of the reversing spring that determines the contact pressure of the switch as a whole switch, not limited to the push switch. In the case of the conventional example, the rotation fulcrum 105a of the movable contact 104 and the locking portion of the reversing spring 106 are determined. It was difficult to set the horizontal distance to be small and the direction of the force of the reversing spring 106 to be such that the contact pressure becomes large, in a limited size.
[0007]
Further, since the reversing spring 106 is locked to the fixed protrusion 101a of the cover 101, the bending of the reversing spring for reversing the movable contact 104 is restricted, which also increases the contact pressure. It was a difficult cause.
[0008]
As described above, since the contact pressure cannot be increased, it is difficult to increase the rated current of the switch. This is one of the reasons why there is no push switch with a rated current of “16 A” or more at present.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a push switch capable of increasing a contact pressure and opening and closing a high capacity.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a push switch according to claim 1 is provided with a push button penetrating in and out from one side of the body and being movably mounted, and a body parallel to a moving direction of the push button. A rotor rotatably supported on the ceiling surface of the device, a contact terminal made of a conductive material having a fixed contact on the bottom surface of the body, and a U-shaped portion formed in a substantially U-shape. A movable contact made of a conductive material provided with a movable contact corresponding to the fixed contact on one of the legs, and a conductive material provided on the bottom surface of the body with a supporting portion for swingably supporting the movable contact. A common terminal, one end of which is attached to the rotor and the other end of which is inserted into the U-shaped portion of the movable contact, and the movable contact is inverted by interlocking with the pushing operation of the push button. In the form of a coil for swinging the movable contact and the fixed contact so as to contact / separate the movable contact from the fixed contact. It was that a pulling.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0012]
1A and 1B are longitudinal sectional views of the push switch of the present embodiment, and FIG. 2 is an exploded perspective view of the push switch of the present embodiment.
[0013]
This push switch is made of a body 1 made of a synthetic resin and formed into a substantially box-shaped body 1 having an open surface, and a cover 2 coupled to the opening side of the body 1.
[0014]
The body 1 and the cover 2 are connected by an assembling of an assembling claw 1a provided on one side surface of the body 1 and an assembling hole 2b formed in a tongue piece 2a protruding from one side surface of the cover 2. Is done.
[0015]
The inside of the body 1 is separated by a partition 1b into two rectangular storage chambers 1A and 1B.
[0016]
Contact terminals 3 are provided on one of the longitudinal sides of the bottom surfaces of the storage chambers 1A and 1B.
[0017]
The contact terminals 3, 3 are made of a conductive material and formed in a substantially L-shape. Fixed contacts 3a, 3a are provided on the outer surface of the shorter leg, and the fixed contacts 3a, 3a are mounted on the bottom surface of the body 1. It is attached in a state where the distal end 3b of the longer and longer leg piece is pierced from the bottom surface of the body 1 to the outside.
[0018]
Common terminals 4 and 4 are provided on the other of the bottom surfaces of the storage chambers 1A and 1B in the longitudinal direction.
[0019]
The common terminals 4 and 4 are formed of a conductive material and are formed in a substantially L-shape. The tip of the shorter leg is divided into two forks 4a and 4a and bent outward to form a movable contact 5 which will be described later. A supporting portion for swingably supporting is formed.
[0020]
The common terminals 4 and 4 are attached in a state where a support portion including the forked portions 4a and 4a is provided on the bottom surface of the body 1 and the tip 4b of the longer leg piece penetrates from the bottom surface of the body 1 to the outside.
[0021]
The movable contacts 5, 5 have a substantially U-shape formed by a central piece 5a and two leg pieces 5b, 5c protruding from both end edges of the central piece 5a in a direction substantially perpendicular to the central piece 5a. Part.
[0022]
An extension piece 5d extends from the tip of one of the leg pieces 5b. The extension piece 5d is bent once in a substantially arc shape in the direction of the center piece 5a, and then diagonally above the center piece 5a. The movable contact 5e is provided on the surface of the end of the extension piece 5a on the side of the center piece 5a.
[0023]
Notches 5f, 5f are provided at both ends of the central piece 5a in a direction parallel to the two leg pieces 5b, 5c.
[0024]
The movable contacts 5, 5 are arranged such that the forked portions 4a, 4a of the common terminals 4, 4 protrude from the notches 5f, 5f to the inside of the U-shaped portion, and the forked portions 4a, 4a, The supporting portion 4a is swingably supported.
[0025]
A notch 1c is provided on the side of the body 1 opposite to the side on which the contact terminals 3 are provided, from the edge on the opening side of the body 1, and the push button 6 is pushed through the notch 1c. Mounted movably.
[0026]
The push button 6 has a substantially rectangular parallelepiped operating body 6a having an open bottom surface and one side surface in the longitudinal direction, and an extending portion 6b extending from the upper surface of the operating body 6a in the direction of the opened one side surface. Arms 6c, 6c having square holes 6d, 6d on both sides of the setting portion 6b are formed into a substantially T-shaped shape protruding.
[0027]
Protrusions 6f, 6f are protrudingly provided at opposing positions on both inner side surfaces along the extension 6b of the respective square holes 6d, 6d.
[0028]
The push button 6 houses the return spring 7 inside the operating body 6a, and locks one end of the return spring 7 to the convex portion 1d provided below the notch 1c of the body 1 through the opened one side surface. In this state, the arms 6c, 6c are housed and arranged inside the body 1.
[0029]
A heart-shaped cam portion 6e is formed on the surface of the extension portion 6b of the push button 6 on the cover 2 side.
[0030]
The lock pin 8 is formed in a substantially U-shape including a central piece 8a and both leg pieces 8b and 8c by a linear metal, and one of the leg pieces 8b is formed on the side of the body 1 on the side where the contact terminals 3 are provided. The other leg 8c is slid along the outer periphery of the heart-shaped cam portion 6e while being rotatably supported by a hole 1e provided near the edge on the opening side.
[0031]
The pressing spring 9 has a hole 9a provided at one end thereof attached to a convex portion 2c provided at the back surface of the cover 2, and constantly biases the lock pin 8 at the other end thereof in the direction of the heart-shaped cam portion 6e.
[0032]
The rotor 10 is rotatably supported by a bearing 2d provided on the back surface of the cover 2 parallel to the moving direction of the push button 6. In addition, a projection 10a is provided on a surface that becomes the body 1 side when the cover 2 is coupled to the body 1.
[0033]
The coil-shaped reversing spring 11 is formed so that its diameter is larger than the interval between the two convex portions 6f, 6f provided in the square holes 6d, 6d of the push button 6, and has one end portion of the convex portion 10a of the rotor 10. And the other end passes between the convex portions 6f, 6f of the square holes 6d, 6d of the push button 6 and the inner side surfaces 6g, 6g of the square holes 6d, 6d on the side of the operation body 6a. The child 5 is inserted into the U-shaped portion.
[0034]
Although not described in detail, the push switch configured as described above is attached to a printed board or the like by an attachment fitting 12 having attachment holes 12a.
[0035]
Next, the operation of the push switch will be described.
[0036]
In the initial state (off state) in which the push button 6 is not pressed, as shown in FIG. 1A, the push button 6 is urged outward by the return spring 7 from the body 1 to the outside. It is protruding.
[0037]
In addition, the reversing springs 11, 11 are bent in a substantially inverted letter shape in FIG. 1A, and the movable contacts 5, 5 into which the other ends of the reversing springs 11, 11 are inserted, are movable. 11, the other leg 5c of the U-shaped portion is pressed and urged from the inside, and the central pieces 5a, 5a of the movable contacts 5, 5 are parallel to the bottom surface of the body 1, and are located diagonally above the central piece 5a. The movable contacts 5e, 5e are separated from the fixed contacts 3a, 3a. At this time, the contact interval x is 3 mm or more.
[0038]
Next, when the distal end of the operating portion 6a of the push button 6 is pushed, the reversing springs 11, 11 are pressed by the inner side surfaces 6g, 6g of the square holes 6d, 6d of the push button 6 on the operating body 6a side. In conjunction therewith, the movable contacts 5, 5 into which the other ends of the reversing springs 11, 11 are inserted, rotate counterclockwise in FIG. 1A around the forked portions 4a, 4a of the common terminals 4, 4. To go. Further, the rotors 10, 10 to which one ends of the reversing springs 11, 11 are mounted rotate clockwise in FIG. 1A.
[0039]
At a certain point, when the reversing springs 11 and 11 exceed the dead center, the bending is reversed, and the movable contacts 5 and 5 are rotated in a snap action, and fixed to the movable contacts 5e and 5e as shown in FIG. The contacts 3a and 3a come into contact, and the push switch is turned on. At this time, the reversing springs 11 and 11 are bent in a substantially rectangular shape.
[0040]
In this ON state, as shown in FIG. 1B, the reversing springs 11, 11 are in contact with one leg 5b of the U-shaped portions of the movable contacts 5, 5, and press the U-shaped portion from the inside. The movable contacts 5 are urged in a direction in which the contact pressure between the movable contact 5e and the fixed contact 3a increases.
[0041]
This state is maintained by locking the lock pin 8 to the heart-shaped cam 6e.
[0042]
When the locked state of the lock pin 8 is released, the push button 6 moves outward of the body 1 by the urging force of the return spring 7. At this time, the reversing springs 11, 11 are pressed in the direction of movement of the push button 6 by the convex portions 6f, 6f of the square holes 6d, 6d of the push button 6, and the movable contacts 5, 5 work in conjunction with the push. , 4 are rotated clockwise in FIG. 1B around the forked portions 4a, 4a. Further, the rotors 10, 10 rotate counterclockwise in FIG. 1B.
[0043]
At a certain point, when the reversing springs 11 and 11 exceed the dead point, the bending is reversed, and the movable contacts 5 and 5 are rotated in a snap action, and fixed to the movable contacts 5e and 5e as shown in FIG. The contacts 3a and 3a are opened, and the push switch is turned off. At this time, the reversing springs 11, 11 are bent in a substantially inverted letter shape.
[0044]
In such a push switch, by attaching one end of the reversing springs 11 to the rotors 10, the change in the bending of the reversing springs 11 and 11 becomes smooth, and the other end of the reversing springs 11 and 11 is connected. When the switch is turned on by being inserted into the U-shaped portions of the movable contacts 5, 5, the bending of the reversing springs 11, 11 presses the U-shaped portions of the movable contacts 5, 5 from the inside, and the movable Since the movable contacts 5, 5 are urged in the direction in which the contact pressure between the contact 5e and the fixed contact 3a increases, the contact pressure can be increased, and high capacity switching can be performed.
[0045]
【The invention's effect】
The push switch according to claim 1, wherein the push button penetrates in and out from one side of the body and is rotatably mounted on the push button, and the push switch is rotatably mounted on a ceiling surface of the body parallel to a moving direction of the push button. A rotor that is supported, a contact terminal made of a conductive material having a fixed contact provided on the bottom surface of the body, and a U-shaped portion formed in a substantially U-shape; A movable contact made of a conductive material provided with a movable contact corresponding to the contact, a common terminal made of a conductive material provided on a bottom surface of the body with a support portion for swingably supporting the movable contact, and one end portion The other end is attached to the rotor, and the other end is inserted into the U-shaped portion of the movable contact, and the movable contact is swung by inverting the bending in conjunction with the pressing operation of the push button to swing the movable contact. And a coil-shaped reversing spring for contacting / separating the fixed contact and the fixed contact. By attaching one end of the reversing spring to the rotor, the bending of the reversing spring becomes smooth, and the other end of the reversing spring is inserted into the U-shaped portion of the movable contact. When the push button is pressed and the bending of the reversing spring is reversed and the movable contact and the fixed contact come into contact with each other, the bending of the reversing spring presses the U-shaped portion of the movable contact from the inside and the movable contact and Since the contact pressure with the fixed contact is increased, there is an effect that high-capacity switching can be performed.
[Brief description of the drawings]
FIG. 1A is a vertical cross-sectional view when a push switch according to an embodiment is turned off.
(B) It is a longitudinal cross-sectional view when the push switch of the above is turned on.
FIG. 2 (a) is an exploded perspective view of the same.
(B) It is an exploded perspective view of the back of the same cover.
FIG. 3 is a longitudinal sectional view of a conventional push switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Body 2 Cover 3 Contact terminal 3a Fixed contact 4 Common terminal 5 Movable contact 5e Movable contact 6 Push button 7 Return spring 8 Lock pin 9 Holding spring 10 Rotor 11 Inverting spring

Claims

A push button pierced from one side to the inside and outside so as to be movably mounted, a rotor rotatably supported on a ceiling surface of the body parallel to a moving direction of the push button, and a body; A contact terminal made of a conductive material having a fixed contact provided on the bottom surface thereof, and a U-shaped part formed in a substantially U-shape, and a movable contact corresponding to the fixed contact is provided on one leg side of the U-shaped part. A movable contact made of a conductive material, a common terminal made of a conductive material provided on the bottom surface of the body with a support portion for swingably supporting the movable contact, and one end mounted on the rotor and the other end Is inserted into the U-shaped portion of the movable contact, the bending is reversed in conjunction with the pressing operation of the push button to swing the movable contact, and the movable contact and the fixed contact are brought into contact / open. A push switch comprising: a coil-shaped reversing spring for separating the push switch.