JP2011198722A

JP2011198722A - Switch

Info

Publication number: JP2011198722A
Application number: JP2010067333A
Authority: JP
Inventors: Fumiyuki Kaminaka; 史之上仲; Kunio Takahashi; 邦夫高橋
Original assignee: Teikoku Tsushin Kogyo Co Ltd
Current assignee: Teikoku Tsushin Kogyo Co Ltd
Priority date: 2010-03-24
Filing date: 2010-03-24
Publication date: 2011-10-06

Abstract

PROBLEM TO BE SOLVED: To provide a switch which can surely establish electrical connection between a movable contact support and a movable contact body, can surely prevent an arc from being generated, and can obtain sufficient durability.SOLUTION: The switch includes a case 10, a fixed contact body 40 and a movable contact body supporter 50 which are set on the bottom of a contact housing 11 of the case 10, a movable contact body 70 which is swingingly pivoted at a standing portion 54 erected from the bottom of the contact housing 11 and has a movable contact 71 attached and separated to/from a fixed contact 45 formed on the fixed contact body 40, and an operation knob 150 having an operation part 190 which operates to swing the movable contact body 70 by moving while abutting to the upper surface of the movable contact body 70. A short-circuiting bar 200 having a fitting base 201 fitted to the movable contact body supporter 50, an arm 203 projecting from the fitting base 201, and an elastically touching part 205 set on the top of the arm 203 and touched to the bottom surface of the movable contact body 70 is placed.

Description

本発明は、操作つまみの揺動によってスイッチ接点を切り換える揺動式（シーソー型）のスイッチに関し、特に電源のオンオフに用いて好適なスイッチに関するものである。 The present invention relates to a swing type (seesaw type) switch that switches a switch contact by swinging an operation knob, and more particularly to a switch suitable for use in turning on and off a power source.

従来、揺動型の電源スイッチ（電源のオンオフに用いるスイッチ）は、たとえば特許文献１の図２２に示すように、ケース（２）の底面に固定接点体（４）と可動接点体支持体（５）とを取り付け、可動接点体支持体（５）の立設部（５２１）（特許文献１の図１８参照）の上辺（５２３）上に可動接点体（３）を揺動自在に設置し、さらに可動接点体（３）の上に操作つまみ（１）を揺動自在に設置し、操作つまみ（１）を揺動操作することで操作つまみ（１）の下面から突出する操作部（１２）（特許文献１の図２参照）を左右に移動し、この操作部（１２）にその一端が係止されている可動接点体（３）を揺動して固定接点体（４）の固定接点（４１）と可動接点体（３）の可動接点（３１）とをオンオフするように構成している。 Conventionally, an oscillating power switch (a switch used for turning on / off a power supply) is, for example, as shown in FIG. 22 of Patent Document 1, a fixed contact body (4) and a movable contact body support ( 5), and the movable contact body (3) is swingably installed on the upper side (523) of the standing portion (521) (see FIG. 18 of Patent Document 1) of the movable contact body support body (5). Further, the operation knob (1) is swingably installed on the movable contact body (3), and the operation section (12) protruding from the lower surface of the operation knob (1) by swinging the operation knob (1). ) (See FIG. 2 of Patent Document 1) is moved to the left and right, and the movable contact body (3) whose one end is locked to the operation portion (12) is swung to fix the fixed contact body (4). The contact (41) and the movable contact (31) of the movable contact body (3) are configured to be turned on / off.

一方この電源スイッチにおいては、スイッチオン時及びオフ時に可動接点体（３）が立設部（５２１）の上辺（５２３）上でバウンシングし、このため可動接点体（３）と可動接点体支持体（５）の間でアークが生じ、電源スイッチの寿命が短くなってしまう恐れがあった。 On the other hand, in this power switch, the movable contact body (3) bounces on the upper side (523) of the upright portion (521) when the switch is turned on and off, so that the movable contact body (3) and the movable contact body support body There was a risk that an arc would occur between (5) and the life of the power switch would be shortened.

この問題を解決するため、特許文献１に記載の電源スイッチにおいては、本願の図１３に示すように、可動接点体支持体（５）の立設部（５２１）の上辺（５２３）上に、短絡片（６）を挟んで可動接点体（３）を揺動自在に設置する例が開示されている。このとき立設部（５２１）の上辺（５２３）の両端には上方に突出する突出部（５２１ａ）が設けられ、この突出部（５２１ａ）に可動接点体（３）の両側辺中央に設けた凹状の係止部（３ａ）を係合して揺動自在に保持している。短絡片（６）は略矩形平板状の短絡片本体（６０）の対向する両側辺から上方向に傾斜しながら突出する１対ずつ（計４本）の突起（６１）を設けるとともに、他方の対向する両側辺から上方向に９０°よりもさらに少し鋭角に折り曲げてなる保持片（６２）を設けて構成されている。そして突起（６１）が可動接点体（３）の下面に弾接すると同時に、両保持片（６２）が突出部（５２１ａ）の外側の側辺に弾接することによって立設部（５２１）と可動接点体（３）間が短絡片（６）によって弾性を持って電気的に接続される。これによって可動接点体（３）が立設部（５２１）の上辺（５２３）上でバウンシングしても、常に可動接点体（３）と可動接点体支持体（５）間の電気的接続が維持され、アークの発生が防止される。 In order to solve this problem, in the power switch described in Patent Document 1, as shown in FIG. 13 of the present application, on the upper side (523) of the standing portion (521) of the movable contact body support (5), An example in which the movable contact body (3) is swingably installed with the short-circuit piece (6) interposed therebetween is disclosed. At this time, projecting portions (521a) projecting upward are provided at both ends of the upper side (523) of the standing portion (521), and the projecting portions (521a) are provided at the centers of both sides of the movable contact body (3). The concave locking portion (3a) is engaged and held so as to be swingable. The short-circuit piece (6) is provided with a pair (four total) of protrusions (61) that project while being inclined upward from opposite sides of the substantially rectangular flat plate-shaped short-circuit piece body (60), and the other A holding piece (62) is provided that is bent at a slightly more acute angle than 90 ° upward from both opposing sides. The protrusion (61) is in elastic contact with the lower surface of the movable contact body (3), and at the same time, the holding pieces (62) are elastically in contact with the outer side of the protrusion (521a) to move with the standing portion (521). The contact bodies (3) are electrically connected with elasticity by the short-circuit piece (6). Accordingly, even when the movable contact body (3) bouncing on the upper side (523) of the standing portion (521), the electrical connection between the movable contact body (3) and the movable contact body support body (5) is always maintained. Generation of arcs is prevented.

特開２００４−３０３７２７号公報JP 2004-303727 A

しかしながら上記従来例の場合、短絡片（６）の両保持片（６２）が立設部（５２１）の左右両側辺から張り出して配置されるため、その分電源スイッチの幅方向寸法（操作つまみ（１）の揺動軸に沿う方向の寸法）の厚みの薄型化が図れなかった。 However, in the case of the above conventional example, both holding pieces (62) of the short-circuit piece (6) are arranged so as to protrude from the left and right sides of the standing portion (521), and accordingly, the width direction dimension of the power switch (operation knob ( The thickness of the dimension (1) along the swing axis) could not be reduced.

また上記構成の短絡片（６）の場合、突起（６１）の長さ寸法が短い。このため突起（６１）による可動接点体（３）の弾発力が経時的に弱くなる、いわゆる「ヘタリ」が生じてしまう恐れがあり、その耐久性に問題があった。 In the case of the short-circuit piece (6) having the above configuration, the length dimension of the protrusion (61) is short. For this reason, the elastic force of the movable contact body (3) by the protrusion (61) may be weakened over time, so-called “sagging” may occur, and there is a problem in durability.

また上記構成の短絡片（６）は可動接点体（３）と可動接点体支持体（５）の両者の何れに対しても弾接して摺動する上、短絡片（６）全体が動く構成なので、必ずしも可動接点体（３）と可動接点体支持体（５）間の電気的接続が確実に行えているとは言えず、さらに確実な電気的接続構造が求められていた。 In addition, the short-circuit piece (6) having the above-described configuration is configured to slide while elastically contacting both the movable contact body (3) and the movable contact body support (5), and the entire short-circuit piece (6) moves. Therefore, it cannot be said that the electrical connection between the movable contact body (3) and the movable contact body support (5) can be surely performed, and a more reliable electrical connection structure has been demanded.

本発明は上述の点に鑑みてなされたものでありその目的は、可動接点体支持体と可動接点体間の電気的接続が確実に行えてアークの発生を確実に防止することができるとともに十分な耐久性が得られ、さらに操作つまみの揺動軸に沿う方向の厚みの薄型化が図れるスイッチを提供することにある。 The present invention has been made in view of the above points, and its purpose is to sufficiently prevent electrical arcing between the movable contact body support body and the movable contact body and reliably prevent the occurrence of an arc. It is an object of the present invention to provide a switch that can achieve excellent durability and can reduce the thickness in the direction along the swing axis of an operation knob.

本願請求項１に記載の発明は、内部に接点収納部を有するケースと、前記ケースの接点収納部の底面に設置される少なくとも一対の固定接点体及び可動接点体支持体と、前記可動接点体支持体の前記接点収納部の底面から立設する立設部に揺動自在に軸支され、前記固定接点体に設けた固定接点に接離する可動接点を有する可動接点体と、前記可動接点体の上部に設置され、前記可動接点体の上面に当接しながら移動することで可動接点体を揺動操作する操作部を有する操作つまみと、を具備するスイッチにおいて、前記可動接点体支持体に取り付けられる取付基部と、前記取付基部から突出するアーム部と、前記アーム部の先端又は途中に設けられて前記可動接点体の下面に弾接する弾接部とを有する短絡片を設置したことを特徴とするスイッチにある。 The invention according to claim 1 of the present application is a case having a contact housing portion therein, at least a pair of a fixed contact body and a movable contact body support body installed on a bottom surface of the contact housing portion of the case, and the movable contact body. A movable contact body having a movable contact pivotally supported by a standing portion standing from a bottom surface of the contact housing portion of the support body and contacting and separating from a fixed contact provided on the fixed contact body; and the movable contact An operation knob having an operation unit that swings the movable contact body by moving while abutting on the upper surface of the movable contact body. A short-circuiting piece having an attachment base portion to be attached, an arm portion projecting from the attachment base portion, and a resilient contact portion that is provided at the tip or midway of the arm portion and elastically contacts the lower surface of the movable contact body is provided. To In the pitch.

本願請求項２に記載の発明は、請求項１に記載のスイッチにおいて、前記短絡片の弾接部は、前記可動接点体の揺動軸近傍部分の下面に弾接することを特徴とするスイッチにある。 The invention according to claim 2 of the present application is the switch according to claim 1, wherein the elastic contact portion of the short-circuit piece elastically contacts the lower surface of the movable contact body in the vicinity of the swing axis. is there.

本願請求項３に記載の発明は、請求項２に記載のスイッチにおいて、前記可動接点体の揺動軸を境にして可動・固定接点とは反対側に前記短絡片の取付基部を配置し、且つ前記短絡片の弾接部は、前記可動接点体の揺動軸を越えて可動接点側に配置されていることを特徴とするスイッチにある。 The invention according to claim 3 of the present application is the switch according to claim 2, wherein the mounting base of the short-circuiting piece is disposed on the opposite side of the movable / fixed contact with the swing axis of the movable contact body as a boundary, The elastic contact portion of the short-circuit piece is located on the movable contact side beyond the swing axis of the movable contact body.

本願請求項４に記載の発明は、請求項２又は３に記載のスイッチにおいて、前記短絡片は、前記取付基部から突出したアーム部を折り返すとともに折り返した部分に前記弾接部を設けて構成されていることを特徴とするスイッチにある。 The invention according to claim 4 of the present application is the switch according to claim 2 or 3, wherein the short-circuit piece is configured by folding back the arm portion protruding from the mounting base and providing the elastic contact portion in the folded portion. The switch is characterized by the fact that

本願請求項５に記載の発明は、請求項４に記載のスイッチにおいて、前記可動接点体の幅寸法に対して、前記短絡片のアーム部の折り返した部分の幅寸法を同一寸法以下としたことを特徴とするスイッチにある。 The invention according to claim 5 of the present invention is the switch according to claim 4, wherein the width dimension of the folded portion of the arm portion of the short-circuiting piece is equal to or less than the same dimension with respect to the width dimension of the movable contact body. The switch is characterized by

本願請求項６に記載の発明は、請求項５に記載のスイッチにおいて、前記可動接点体支持体の立設部には、前記可動接点体の可動接点が前記固定接点体の固定接点から所定距離離れたときに前記短絡片のアーム部に当接することで前記アーム部の上方向への移動を規制するストッパ部が設けられていることを特徴とするスイッチにある。 According to a sixth aspect of the present invention, in the switch according to the fifth aspect, the movable contact of the movable contact body is a predetermined distance from the fixed contact of the fixed contact body at the standing portion of the movable contact body support. The switch is characterized in that a stopper portion is provided for restricting the upward movement of the arm portion by coming into contact with the arm portion of the short-circuit piece when separated.

請求項１に記載の発明によれば、短絡片の取付基部が可動接点体支持体に取り付けられているのでその機械的・電気的接続は確実である。一方、弾接するのは短絡片の弾接部と可動接点体の下面間だけであり、しかも短絡片は前述のように可動接点体支持体に取り付けられていてがたつくことがないので弾接部と可動接点体間は安定した状態での摺動・弾接となり、これら弾接部と可動接点体間の電気的接続も確実になる。さらに弾接部は可動接点体の下面に弾接するので弾接した部分において摺動する摺動距離は非常に短く、この点からも弾接部と可動接点体間の電気的接続は確実になる。これらのことから可動接点体支持体と可動接点体間の電気的接続は確実に行え、アークの発生を確実に防止できる。 According to the first aspect of the invention, since the attachment base of the short-circuit piece is attached to the movable contact body support, the mechanical and electrical connection is reliable. On the other hand, the elastic contact is only between the elastic contact portion of the short-circuiting piece and the lower surface of the movable contact body, and the short-circuiting piece is attached to the movable contact body support body as described above, so there is no rattling. The movable contact bodies are slid and elastically contacted in a stable state, and electrical connection between these elastic contact portions and the movable contact bodies is also ensured. Furthermore, since the elastic contact portion elastically contacts the lower surface of the movable contact body, the sliding distance of sliding at the elastic contact portion is very short, and also from this point, the electrical connection between the elastic contact portion and the movable contact body is ensured. . For these reasons, the electrical connection between the movable contact body support and the movable contact body can be reliably performed, and the occurrence of arc can be reliably prevented.

短絡片は可動接点体支持体に取り付けた取付基部からアーム部を伸ばしてその所定位置に設けた弾接部を可動接点体の下面に当接する構成なので、容易にアーム部の長さを長く設定することができ、その分アーム部にいわゆるヘタリが生じにくく、短絡片の耐久性が向上する。 The shorting piece is configured to extend the arm part from the mounting base attached to the movable contact body support and abut the elastic contact part provided at the predetermined position on the lower surface of the movable contact body, so the arm part length can be easily set long Therefore, so-called settling is unlikely to occur in the arm portion, and the durability of the short-circuit piece is improved.

短絡片は可動接点体の下側位置に設置され、可動接点体の下面に弾接する構成なので、短絡片が可動接点体の左右両側辺から張り出さないように構成することができ、スイッチの幅方向寸法（操作つまみの揺動軸に沿う方向の寸法）の厚みの薄型化を容易に図ることができる。 Since the short-circuit piece is installed at the lower position of the movable contact body and elastically contacts the lower surface of the movable contact body, the short-circuit piece can be configured not to protrude from the left and right sides of the movable contact body. It is possible to easily reduce the thickness of the direction dimension (the dimension along the swing axis of the operation knob).

請求項２に記載の発明によれば、短絡片の弾接部が弾接するのは可動接点体の揺動軸近傍部分の下面なので、弾接部の上下動が短く、ほとんどその弾接位置が移動しない。このため、弾接部と可動接点体間の電気的接続が確実になり、アークの発生を確実に防止できる。同時にいわゆるヘタリも生じにくく、短絡片の耐久性が向上する。 According to the second aspect of the present invention, since the elastic contact portion of the short-circuiting piece is in contact with the lower surface of the movable contact body in the vicinity of the swinging shaft, the vertical movement of the elastic contact portion is short, and the elastic contact position is almost the same. Do not move. For this reason, the electrical connection between the elastic contact portion and the movable contact body is ensured, and the generation of an arc can be reliably prevented. At the same time, so-called settling is unlikely to occur, and the durability of the short-circuit piece is improved.

請求項３に記載の発明によれば、短絡片の弾接部が可動接点体の下面によって押し下げられながら、可動接点体の可動接点が固定接点体の固定接点に当接してオンするので、オンする際の弾接部の可動接点体への電気的接続がより確実になる。同時に短絡片全体が固定接点から離れた位置に配置されるので、短絡片と固定接点体間の電気的絶縁状態を良好な状態に維持でき両者間でのアークの発生を確実に防止できる。 According to the third aspect of the present invention, since the elastic contact portion of the short-circuiting piece is pushed down by the lower surface of the movable contact body, the movable contact of the movable contact body abuts on the fixed contact of the fixed contact body and is turned on. In this case, the electrical connection of the elastic contact portion to the movable contact body becomes more reliable. At the same time, since the entire short-circuit piece is disposed at a position away from the fixed contact, the electrical insulation state between the short-circuit piece and the fixed contact body can be maintained in a good state, and an arc can be reliably prevented from occurring between the two.

請求項４に記載の発明によれば、小さい空間においてもアーム部の長さを長く維持することができ、アーム部のいわゆるヘタリを防止することができる。言い換えればスイッチの小型化が図れる。 According to invention of Claim 4, the length of an arm part can be maintained long also in a small space, and what is called a settling of an arm part can be prevented. In other words, the switch can be miniaturized.

請求項５に記載の発明によれば、短絡片が可動接点体の左右両側辺から外方に張り出さないので、スイッチの幅方向寸法（操作つまみの揺動軸に沿う方向の寸法）の厚みの薄型化が図れる。 According to the fifth aspect of the present invention, since the short-circuit piece does not protrude outward from the left and right sides of the movable contact body, the thickness of the switch in the width direction (the dimension along the swing axis of the operation knob) Can be made thinner.

請求項６に記載の発明によれば、アーム部を不必要に上方に移動させることなく、その上下動を小さくすることができ、アーム部のいわゆるヘタリを防止することができる。 According to the sixth aspect of the present invention, the vertical movement of the arm portion can be reduced without unnecessarily moving the arm portion upward, and so-called settling of the arm portion can be prevented.

スイッチ１−１を上側から見た斜視図である。It is the perspective view which looked at the switch 1-1 from the upper side. スイッチ１−１を下側から見た斜視図である。It is the perspective view which looked at switch 1-1 from the lower side. 図１のＡ−Ａ概略断面図である。It is an AA schematic sectional drawing of FIG. スイッチ１−１を上側から見た上側部品の分解斜視図である。It is the disassembled perspective view of the upper part which looked at the switch 1-1 from the upper side. スイッチ１−１を上側から見た下側部品の分解斜視図である。It is a disassembled perspective view of the lower part which looked at the switch 1-1 from the upper side. スイッチ１−１を下側から見た上側部品の分解斜視図である。It is the disassembled perspective view of the upper part which looked at the switch 1-1 from the lower side. スイッチ１−１を下側から見た下側部品の分解斜視図である。It is a disassembled perspective view of the lower part which looked at the switch 1-1 from the lower side. ケース１０を別の角度から見た斜視図である。It is the perspective view which looked at the case 10 from another angle. スイッチ１−１の動作説明図である。FIG. 3 is an operation explanatory diagram of the switch 1-1. スイッチ１−２の概略断面図である。It is a schematic sectional drawing of switch 1-2. スイッチ１−３に用いる可動接点体支持体５０と短絡片２００と可動接点体７０とを示す分解斜視図である。FIG. 3 is an exploded perspective view showing a movable contact body support body 50, a short-circuit piece 200, and a movable contact body 70 used for a switch 1-3. スイッチ１−３の可動接点体７０近傍部分の要部拡大概略断面図である。It is a principal part expansion schematic sectional drawing of the movable contact body 70 vicinity part of switch 1-3. 従来技術の説明図である。It is explanatory drawing of a prior art.

以下、本発明の実施形態を図面を参照して詳細に説明する。
図１は本発明の第１実施形態に係るスイッチ１−１を上側から見た斜視図、図２はスイッチ１−１を下側から見た斜視図、図３は図１のＡ−Ａ概略断面図、図４はスイッチ１−１を上側から見た上側部品の分解斜視図、図５はスイッチ１−１を上側から見た下側部品の分解斜視図、図６はスイッチ１−１を下側から見た上側部品の分解斜視図、図７はスイッチ１−１を下側から見た下側部品の分解斜視図である。これらの図に示すようにスイッチ１−１は、２組の固定接点体４０及び可動接点体支持体５０と２組の可動接点体７０と２組の短絡片２００とを収納したケース１０と、ケース１０の接点収納部１１の上部開口を覆うカバー８０と、カバー８０の上部からケース１０の上部に設置される外側ケース１００と、外側ケース１００内にその上側から挿入されて外側ケース１００に揺動自在に取り付けられる操作つまみ１５０とを具備して構成されている。なお以下の説明において、「上」とはケース１０から操作つまみ１５０を見る方向をいい、「下」とはその反対方向をいうものとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a perspective view of the switch 1-1 according to the first embodiment of the present invention as viewed from above, FIG. 2 is a perspective view of the switch 1-1 as viewed from below, and FIG. 3 is a schematic diagram of AA in FIG. 4 is an exploded perspective view of the upper part when the switch 1-1 is viewed from above, FIG. 5 is an exploded perspective view of the lower part when the switch 1-1 is viewed from above, and FIG. 6 is a perspective view of the switch 1-1. FIG. 7 is an exploded perspective view of the lower part when the switch 1-1 is viewed from the lower side. As shown in these drawings, the switch 1-1 includes a case 10 in which two sets of fixed contact bodies 40 and a movable contact body support body 50, two sets of movable contact bodies 70, and two sets of short-circuit pieces 200 are housed, A cover 80 covering the upper opening of the contact housing part 11 of the case 10, an outer case 100 installed from the upper part of the cover 80 to the upper part of the case 10, and inserted into the outer case 100 from the upper side to swing to the outer case 100. An operation knob 150 that is movably attached is provided. In the following description, “up” refers to the direction in which the operation knob 150 is viewed from the case 10, and “down” refers to the opposite direction.

図８はケース１０を別の角度から見た斜視図である。ケース１０は合成樹脂を上面が開口した略矩形箱型に一体成形して構成されている。ケース１０を構成する合成樹脂としては、耐アーク性に優れたメラミン樹脂，不飽和ポリエステルなどの熱硬化性の樹脂などの絶縁材を用いる。ケース１０の内部には上面が開口している凹状の接点収納部１１が形成されている。接点収納部１１の中央にはこれを２つに分割する分割壁１３が形成されている。分割壁１３で分割された２つの接点収納部１１内の底面には、２つずつ（全部で４つの）スリット状の端子挿入孔１５が設けられている。ケース１０の対向する短い方の両外周側辺の下端部からは外方に向けて略矩形状に突出する外側ケース取付部１７が設けられ、これら外側ケース取付部１７には一対ずつの上下に貫通する小孔からなる取付部１９が形成されている。 FIG. 8 is a perspective view of the case 10 viewed from another angle. The case 10 is formed by integrally molding a synthetic resin into a substantially rectangular box shape having an open top surface. As the synthetic resin constituting the case 10, an insulating material such as a melamine resin excellent in arc resistance and a thermosetting resin such as an unsaturated polyester is used. A concave contact housing portion 11 having an upper surface opened is formed inside the case 10. A dividing wall 13 is formed at the center of the contact accommodating portion 11 to divide it into two. Two (four in total) slit-like terminal insertion holes 15 are provided on the bottom surfaces in the two contact accommodating portions 11 divided by the dividing wall 13. Outer case mounting portions 17 projecting outward in a substantially rectangular shape are provided from the lower end portions of the opposite outer peripheral sides of the case 10, and the outer case mounting portions 17 are paired vertically. A mounting portion 19 formed of a small hole penetrating therethrough is formed.

固定接点体４０は、略Ｌ字形状の金属板の屈曲している部分を略直角に折り曲げ、その一方の部分（水平方向を向く部分）を固定接点部４１、他方の部分（垂直方向を向く部分）を端子４３としている。固定接点部４１には略円板形状の固定接点４５が取り付けられている。各端子４３の左右両側辺の根元側の部分には、幅方向に張り出す小突起状の固定部４７が形成されている。 The fixed contact body 40 bends a bent portion of a substantially L-shaped metal plate at a substantially right angle, and fixes one portion (horizontal portion) of the fixed contact portion 41 and the other portion (vertical direction). The portion 43 is a terminal 43. A fixed contact 45 having a substantially disc shape is attached to the fixed contact portion 41. Small projection-like fixing portions 47 projecting in the width direction are formed on the base side portions of the left and right sides of each terminal 43.

可動接点体支持体５０は、略Ｌ字形状の金属板の屈曲している部分を略直角に折り曲げ、その一方の部分（水平方向を向く部分）を支持体本体部５１、他方の部分（垂直方向を向く部分）を端子５３としている。支持体本体部５１はさらにその一端部を上方向に略直角に折り曲げてその立設する部分を立設部５４としている。立設部５４の上辺５５の左右両側の凸部は可動接点体係止部５６となっている。各端子５３の左右両側辺の根元側の部分には、幅方向に張り出す小突起状の固定部５７が形成されている。立設部５４の下部中央には略矩形状に貫通する開口５８が設けられ、その内周辺の内の上辺がストッパ部５９となっている。支持体本体部５１の上面には、一対の小突起状の短絡片取付部６１が形成されている。 The movable contact body support body 50 is formed by bending a bent portion of a substantially L-shaped metal plate at a substantially right angle, one portion (a portion facing in the horizontal direction) of the support body portion 51, and the other portion (vertical portion). The terminal 53 is a portion facing the direction. The support body 51 is further bent at one end thereof at a substantially right angle to form an upright portion 54. The convex portions on the left and right sides of the upper side 55 of the standing portion 54 serve as a movable contact body locking portion 56. Small projection-like fixing portions 57 projecting in the width direction are formed on the base side portions of the left and right sides of each terminal 53. An opening 58 that penetrates in a substantially rectangular shape is provided in the center of the lower portion of the standing portion 54, and the upper side of the inner periphery serves as a stopper portion 59. On the upper surface of the support body 51, a pair of small protrusion-shaped short-circuit piece mounting portions 61 are formed.

短絡片２００は弾性を有する金属板製（この実施形態ではりん青銅板製）であり、前記可動接点体支持体５０の支持体本体部５１上に当接する平板状の取付基部２０１と、取付基部２０１の一辺から突出して略１８０°折り返してなるアーム部２０３と、アーム部２０３の先端に形成してなる弾接部２０５とを具備して構成されている。取付基部２０１には前記可動接点体支持体５０に設けた短絡片取付部６１が挿入される一対の小孔からなる取付部２０７が形成されている。折り返したアーム部２０３の前記一対の取付部２０７に対向する位置には開口部２０９が設けられ、開口部２０９を通して折り返したアーム部２０３の上部から前記一対の取付部２０７が見えるようにしている。アーム部２０３の先端の弾接部２０５の根元部分はストッパ部当接部２１１となっている。弾接部２０５はアーム部２０３の先端部分を上方向に略直角に折り曲げ、さらにその先端側の部分を逆方向に略直角に折り曲げた部分に設けられている。アーム部２０３のストッパ部当接部２１１近傍部分から弾接部２０５に至る部分は、これらの部分が前記可動接点体支持体５０の開口５８に挿入できるように細帯状に形成されている。 The short-circuit piece 200 is made of a metal plate having elasticity (in this embodiment, made of phosphor bronze plate), and has a flat mounting base 201 that contacts the support body 51 of the movable contact body support 50, and a mounting base. The arm part 203 protrudes from one side 201 and is folded back approximately 180 °, and the elastic contact part 205 formed at the tip of the arm part 203 is provided. The mounting base 201 is formed with a mounting portion 207 including a pair of small holes into which the short-circuit piece mounting portion 61 provided on the movable contact body support 50 is inserted. An opening portion 209 is provided at a position facing the pair of attachment portions 207 of the folded arm portion 203 so that the pair of attachment portions 207 can be seen from the upper portion of the arm portion 203 folded through the opening portion 209. The base portion of the elastic contact portion 205 at the tip of the arm portion 203 is a stopper contact portion 211. The elastic contact portion 205 is provided at a portion where the distal end portion of the arm portion 203 is bent upward at a substantially right angle, and further, the distal end portion thereof is bent at a substantially right angle in the opposite direction. The portions from the vicinity of the stopper contact portion 211 of the arm portion 203 to the elastic contact portion 205 are formed in a narrow band shape so that these portions can be inserted into the opening 58 of the movable contact body support 50.

可動接点体７０は略帯状で細長形状の金属板で構成され、その一端近傍の下面に略円板形状の可動接点７１を取り付けている。また長手方向に向かう一対の両側辺のそれぞれの略中央に凹状に切り欠いてなる係止部７３を形成し、一対の係止部７３間を結ぶ可動接点体７０の下面の部分を線状の当接部分７５としている。また可動接点体７０の可動接点７１を設けた反対側の端部は下方向に屈曲され下方向を向く先端辺は当接部７７となっている。 The movable contact body 70 is formed of a substantially strip-shaped and elongated metal plate, and a substantially disk-shaped movable contact 71 is attached to the lower surface near one end thereof. In addition, a locking portion 73 is formed by forming a concave cutout at substantially the center of each of the pair of side edges extending in the longitudinal direction, and the lower surface portion of the movable contact body 70 connecting the pair of locking portions 73 is linear. The contact portion 75 is used. Further, the end of the movable contact body 70 on the opposite side where the movable contact 71 is provided is bent downward, and the tip side facing downward is a contact portion 77.

カバー８０は合成樹脂を略矩形状であって前記ケース１０の接点収納部１１の上部開口を覆う寸法形状に成形して構成されている。カバー８０を構成する合成樹脂としては、耐アーク性に優れたメラミン樹脂，不飽和ポリエステルなどの熱硬化性の樹脂などの絶縁材を用いる。カバー８０の上面中央には上下に貫通する略矩形状の操作部挿通孔８３が形成されている。 The cover 80 is formed by molding synthetic resin into a substantially rectangular shape and sized to cover the upper opening of the contact accommodating portion 11 of the case 10. As the synthetic resin constituting the cover 80, an insulating material such as a melamine resin excellent in arc resistance and a thermosetting resin such as an unsaturated polyester is used. In the center of the upper surface of the cover 80, a substantially rectangular operation portion insertion hole 83 penetrating vertically is formed.

外側ケース１００は合成樹脂製であり、略矩形箱型のケース本体部１０１と、ケース本体部１０１の対向する一対の辺から下方向に向けて突出する略平板状の側壁部１０３とを具備して構成されている。ケース本体部１０１の中央には、下記する操作つまみ１５０のつまみ外装体１６０を収納する上面が解放された操作つまみ収納部１０５が設けられ、操作つまみ収納部１０５の底面には開口１０７が形成されている。ケース本体部１０１の中央の対向する両側面には、一対の軸支孔１０９が設けられている。両側壁部１０３の外側面には、それぞれ一対ずつ弾発係止部１１１が形成されている。弾発係止部１１１は上下方向に延びて外方向に膨らむ略Ｖ字状の平板状のアームであり、弾性を有する。アームの上部の外側面には凹凸状の係止部１１３が形成されている。両側壁部１０３のそれぞれ下端辺からは前記ケース１０の各取付部１９に挿入される一対ずつで小突起状の取付突起１１５が突出している。 The outer case 100 is made of synthetic resin, and includes a substantially rectangular box-shaped case main body 101 and a substantially flat side wall portion 103 protruding downward from a pair of opposite sides of the case main body 101. Configured. In the center of the case main body 101, an operation knob storage portion 105 having a released upper surface for storing a knob outer body 160 of the operation knob 150 described below is provided, and an opening 107 is formed on the bottom surface of the operation knob storage portion 105. ing. A pair of shaft support holes 109 are provided on opposite side surfaces of the center of the case main body 101. A pair of bullet locking portions 111 are formed on the outer side surfaces of the side wall portions 103, respectively. The bullet locking portion 111 is a substantially V-shaped flat arm that extends in the vertical direction and expands outward, and has elasticity. An uneven locking portion 113 is formed on the outer surface of the upper portion of the arm. A pair of small projections 115 are protruded from the lower end sides of the side wall portions 103 in pairs and inserted into the mounting portions 19 of the case 10.

操作つまみ１５０はつまみ外装体１６０とつまみ本体１７０と弾発部材１８０とを具備して構成されている。つまみ外装体１６０は合成樹脂（たとえばＡＢＳ樹脂やポリカーボネート樹脂）の成形品であり、下面が解放された略矩形箱型に形成されている。つまみ外装体１６０の底面には４つの小突起からなる本体取付部１６３が形成されている。 The operation knob 150 includes a knob outer body 160, a knob main body 170, and a resilient member 180. The knob outer body 160 is a molded product of a synthetic resin (for example, ABS resin or polycarbonate resin), and is formed in a substantially rectangular box shape with the lower surface released. On the bottom surface of the knob outer body 160, a main body attachment portion 163 composed of four small protrusions is formed.

つまみ本体１７０は略矩形状の合成樹脂（たとえば熱可塑性の難燃性のポリアミド樹脂）の成形品であり、前記つまみ外装体１６０の下面の凹部内にほぼぴったり収納できる寸法形状に形成されている。つまみ本体１７０には、前記つまみ外装体１６０の各本体取付部１６３を挿入・貫通させる小孔からなる４つの外装体取付部１７１が形成され、またその下面の略中央には下方向に突出して途中で２つに分かれる四角筒状の操作部本体部１７３が形成されている。別れた両操作部本体部１７３は、つまみ本体１７０下面中央の幅方向（操作つまみ１５０の揺動軸線方向）に配置されている。操作部本体部１７３の下面には図３に示すように下記する弾発部材１８０を上下動自在に収納する凹部からなる弾発部材収納部１７５が形成されている。なお操作部本体部１７３と下記する弾発部材１８０とで操作部１９０が構成される。またつまみ本体１７０の前記外側ケース１００の軸支孔１０９に対向する一対の外周側面中央には、軸支孔１０９に回動自在に挿入される小突起からなる軸部１７７（図４，図６では手前側の１つのみ示す）が形成されている。 The knob main body 170 is a molded product of a substantially rectangular synthetic resin (for example, a thermoplastic flame-retardant polyamide resin), and is formed in a dimension that can be stored almost exactly in a recess on the lower surface of the knob outer body 160. . The knob body 170 is formed with four exterior body attachment parts 171 formed of small holes through which the body attachment parts 163 of the knob exterior body 160 are inserted and penetrated, and protrudes downward substantially at the center of the lower surface thereof. A quadrangular cylindrical operation unit main body 173 that is divided into two is formed in the middle. Both separated operating portion main body portions 173 are arranged in the width direction at the center of the bottom surface of the knob main body 170 (in the swing axis direction of the operating knob 150). As shown in FIG. 3, the lower surface of the operation portion main body 173 is formed with a resilient member housing portion 175 having a recess for housing a resilient member 180 described below so as to be movable up and down. An operation unit 190 is configured by the operation unit main body 173 and a resilient member 180 described below. A shaft portion 177 made of a small protrusion that is rotatably inserted into the shaft support hole 109 is provided at the center of the pair of outer peripheral side surfaces facing the shaft support hole 109 of the outer case 100 of the knob body 170 (FIGS. 4 and 6). Then, only one of the front side is shown).

弾発部材１８０は合成樹脂製（たとえば熱可塑性のポリアミド樹脂やＰＢＴ樹脂または熱硬化性のメラミン樹脂など）で略平板形状の弾発部１８１と、コイルバネ製のバネ部材１８７とによって構成されている。弾発部１８１は略長方形状の平板であり、その下端面は鋭角に突出する弾接面１８３になっており、またその上端面はバネ部材１８７を挿入する凹状の溝からなるバネ収納部１８５になっている。 The elastic member 180 is made of a synthetic resin (for example, a thermoplastic polyamide resin, PBT resin, or a thermosetting melamine resin), and includes a substantially flat elastic member 181 and a spring member 187 made of a coil spring. . The elastic portion 181 is a substantially rectangular flat plate, the lower end surface of which is an elastic contact surface 183 protruding at an acute angle, and the upper end surface of the elastic portion 181 is a spring accommodating portion 185 comprising a concave groove into which the spring member 187 is inserted. It has become.

次にこのスイッチ１−１を組み立てるには、まず短絡片２００の取付基部２０１を可動接点体支持体５０の支持体本体部５１上に載置する。このとき支持体本体部５１の短絡片取付部６１を短絡片２００の取付部２０７に挿入し、同時に弾接部２０５を開口５８内に挿入してストッパ部当接部２１１をストッパ部５９に弾接させる。そして少なくとも一方の短絡片取付部６１の先端をかしめて潰し、これによって短絡片２００を可動接点体支持体５０上に取り付ける。次にケース１０の各接点収納部１１内にそれぞれ１組ずつの短絡片２００を取り付けた可動接点体支持体５０と固定接点体４０とを挿入し、固定接点体４０の端子４３と可動接点体支持体５０の端子５３とを、ケース１０の各端子挿入孔１５に挿入する。そしてケース１０の底面から突出する各端子４３，５３の根元の固定部４７，５７を機械的に潰し、これによって各固定接点体４０と可動接点体支持体５０をケース１０内の底面に固定する。さらに図示はしていないが、ケース１０の下面の前記各端子挿入孔１５の周囲にエポキシ系接着剤などからなる封止樹脂を充填し、端子４３，５３と端子挿入孔１５との間にあるわずかな隙間を封止する。 Next, in order to assemble the switch 1-1, first, the mounting base 201 of the short-circuit piece 200 is placed on the support body 51 of the movable contact body support 50. At this time, the short-circuit piece attaching portion 61 of the support body 51 is inserted into the attachment portion 207 of the short-circuit piece 200, and at the same time, the elastic contact portion 205 is inserted into the opening 58 and the stopper contact portion 211 is elastically attached to the stopper portion 59. Make contact. Then, the tip of at least one of the short-circuit piece mounting portions 61 is caulked and crushed, thereby attaching the short-circuit piece 200 onto the movable contact body support 50. Next, the movable contact body support body 50 and the fixed contact body 40 each having a pair of short-circuit pieces 200 mounted therein are inserted into the contact storage portions 11 of the case 10, and the terminal 43 and the movable contact body of the fixed contact body 40 are inserted. The terminals 53 of the support body 50 are inserted into the terminal insertion holes 15 of the case 10. Then, the fixed portions 47 and 57 at the bases of the terminals 43 and 53 protruding from the bottom surface of the case 10 are mechanically crushed, thereby fixing each fixed contact body 40 and the movable contact body support body 50 to the bottom surface in the case 10. . Although not shown in the drawing, a sealing resin made of an epoxy-based adhesive or the like is filled around each terminal insertion hole 15 on the lower surface of the case 10, and is located between the terminals 43 and 53 and the terminal insertion hole 15. Seal small gaps.

次にケース１０の各接点収納部１１内に一対の可動接点体７０を収納し、その際可動接点体７０の係止部７３に可動接点体支持体５０の可動接点体係止部５６を係止し、同時に可動接点体７０の当接部分７５を可動接点体支持体５０の上辺５５に線状に当接させる。可動接点体７０は当接部分７５を上辺５５に当接した状態のままこの当接部分７５を中心に揺動自在となる。次にカバー８０をケース１０上に載置し、ケース１０の上面の開口を塞ぐ。 Next, a pair of movable contact bodies 70 is housed in each contact housing portion 11 of the case 10, and at that time, the movable contact body locking portion 56 of the movable contact body support 50 is engaged with the locking portion 73 of the movable contact body 70. At the same time, the contact portion 75 of the movable contact body 70 is linearly contacted with the upper side 55 of the movable contact body support 50. The movable contact body 70 can swing around the contact portion 75 while the contact portion 75 is in contact with the upper side 55. Next, the cover 80 is placed on the case 10 to close the opening on the upper surface of the case 10.

次につまみ外装体１６０下面の凹部内に、つまみ本体１７０の上面側を収納し、その際つまみ外装体１６０の各本体取付部１６３をつまみ本体１７０の各外装体取付部１７１に挿入し、つまみ本体１７０の下面に突出する各本体取付部１６３の先端を熱かしめによって潰し、つまみ外装体１６０とつまみ本体１７０とを一体化する。そしてつまみ本体１７０の一対の弾発部材収納部１７５に弾発部材１８０を収納し、さらにこの操作つまみ１５０を外側ケース１００の操作つまみ収納部１０５に収納し、その際つまみ本体１７０に設けた軸部１７７を外側ケース１００に設けた軸支孔１０９に挿入し、これによって操作つまみ１５０を外側ケース１００に対して揺動自在に軸支する。 Next, the upper surface side of the knob main body 170 is housed in the recess on the lower surface of the knob outer body 160, and each main body attachment portion 163 of the knob outer body 160 is inserted into each outer body attachment portion 171 of the knob main body 170. The tip of each main body mounting portion 163 protruding from the lower surface of the main body 170 is crushed by heat caulking, and the knob exterior body 160 and the knob main body 170 are integrated. The elastic member 180 is stored in the pair of elastic member storage portions 175 of the knob body 170, and the operation knob 150 is further stored in the operation knob storage portion 105 of the outer case 100. The portion 177 is inserted into a shaft support hole 109 provided in the outer case 100, whereby the operation knob 150 is pivotally supported with respect to the outer case 100.

そしてこの外側ケース１００を前記カバー８０の上に載置する。このとき操作つまみ１５０の操作部１９０はカバー８０の操作部挿通孔８３を貫通し、先端の一対の弾発部１８１の弾接面１８３はそれぞれ各可動接点体７０の上面に弾接する。同時に外側ケース１００の各取付突起１１５をケース１０の各取付部１９に挿入し、各取付突起１１５の先端をケース１０の下面で熱かしめし、これによってケース１０に外側ケース１００を固定する。これによってスイッチ１−１の組み立てが完了する。なお上記組立手順はその一例であり、他の各種異なる組立手順を用いて組み立てても良いことはいうまでもない。 Then, the outer case 100 is placed on the cover 80. At this time, the operation portion 190 of the operation knob 150 passes through the operation portion insertion hole 83 of the cover 80, and the elastic contact surfaces 183 of the pair of elastic portions 181 at the distal ends are in elastic contact with the upper surfaces of the movable contact bodies 70, respectively. At the same time, the mounting protrusions 115 of the outer case 100 are inserted into the mounting portions 19 of the case 10, and the tips of the mounting protrusions 115 are heat caulked on the lower surface of the case 10, thereby fixing the outer case 100 to the case 10. This completes the assembly of the switch 1-1. The above assembling procedure is an example, and it goes without saying that the assembly may be performed using other various assembling procedures.

以上のようにして構成されたスイッチ１−１は、図３に示すように、内部に接点収納部１１を有するケース１０と、ケース１０の接点収納部１１の底面に設置される少なくとも一対の固定接点体４０及び可動接点体支持体５０と、可動接点体支持体５０の接点収納部１１の底面から立設する立設部５４（その上辺５５）に当接して揺動自在に軸支され、固定接点体４０に設けた固定接点４５に接離する可動接点７１を有する可動接点体７０と、可動接点体７０の上部（ケース１０の接点収納部１１の上部）に設置され、可動接点体７０の上面に当接しながら移動することで可動接点体７０を揺動操作する操作部１９０を有する操作つまみ１５０とを具備し、さらに可動接点体支持体５０に取り付けられる取付基部２０１と、取付基部２０１から突出するアーム部２０３と、アーム部２０３の先端に設けられて下記するように可動接点体７０の下面に弾接する弾接部２０５とを有する短絡片２００を設置して構成されている。 As shown in FIG. 3, the switch 1-1 configured as described above includes a case 10 having a contact housing portion 11 therein and at least a pair of fixed members installed on the bottom surface of the contact housing portion 11 of the case 10. The contact body 40 and the movable contact body support body 50, and the upright portion 54 (the upper side 55) standing from the bottom surface of the contact storage section 11 of the movable contact body support body 50 are pivotally supported so as to be swingable. A movable contact body 70 having a movable contact 71 that contacts and separates from a fixed contact 45 provided on the fixed contact body 40, and an upper part of the movable contact body 70 (upper part of the contact accommodating portion 11 of the case 10). An operation knob 150 having an operation unit 190 that swings the movable contact body 70 by moving while abutting on the upper surface of the movable contact body 70, an attachment base 201 that is attached to the movable contact body support 50, and an attachment base 201. Or An arm portion 203 which projects, and is configured by installing a jumper 200 and a resilient contact portion 205 elastically contacting a lower surface of the movable contact member 70 as provided at the tip of the arm portion 203 described below.

図３は操作つまみ１５０が一方の側に揺動しきってスイッチがオフして安定している状態を示している。同図に示す状態は、操作つまみ１５０の操作部１９０の弾発部１８１の弾接面１８３が可動接点体７０の上辺５５に当接している当接部分７５から見て可動接点７１とは反対側の上面を弾接している状態を示しており、これによって可動接点体７０はその当接部７７が可動接点体支持体５０の支持体本体部５１上に当接し、従って可動接点７１は固定接点体４０の固定接点４５から離れ、固定接点体４０と可動接点体支持体５０間、つまり両端子４３，５３間はオフ状態となっている。またこのとき、短絡片２００のアーム部２０３はその先端のストッパ部当接部２１１が可動接点体支持体５０のストッパ部５９に弾接しているので、その位置よりも上方には移動せず、従って弾接部２０５は可動接点体７０の下面から少し離間している。 FIG. 3 shows a state where the operation knob 150 is fully swung to one side and the switch is turned off to be stable. The state shown in the figure is opposite to the movable contact 71 when viewed from the contact portion 75 where the elastic contact surface 183 of the elastic portion 181 of the operation portion 190 of the operation knob 150 is in contact with the upper side 55 of the movable contact body 70. In this state, the upper surface of the movable contact body 70 is elastically contacted, so that the contact portion 77 of the movable contact body 70 abuts on the support body portion 51 of the movable contact body support body 50, and thus the movable contact 71 is fixed. The contact body 40 is separated from the fixed contact 45, and between the fixed contact body 40 and the movable contact body support body 50, that is, between the terminals 43 and 53 is in an OFF state. At this time, the arm portion 203 of the short-circuit piece 200 does not move upward from the position because the stopper portion abutting portion 211 at the tip thereof is in elastic contact with the stopper portion 59 of the movable contact body support 50. Therefore, the elastic contact portion 205 is slightly separated from the lower surface of the movable contact body 70.

次に前記操作つまみ１５０の上方向に持ち上がっている側の上面を押し込む方向に（図３に示す矢印Ｂ方向に）押圧すると、弾発部１８１の弾接面１８３が可動接点体７０の上面に可動接点７１側に向けて移動（摺動）を始め、可動接点体７０の当接部分７５の部分に至るまではバネ部材１８７が押し縮められて弾発部１８１は弾発部材収納部１７５内に押し込められ、弾発面１８３が当接部分７５の部分を通過した際に可動接点体７０は当接部分７５の部分を揺動軸として可動接点７１側が下降するように揺動を始め、押し縮められていたバネ部材１８７の弾発力によって可動接点体７０は急速に揺動して図９に示すように瞬時に可動接点７１が固定接点体４０の固定接点４５に当接し、固定接点体４０と可動接点体支持体５０間、つまり両端子４３，５３間がオンする。このとき操作つまみ１５０は他方の側に揺動しきって安定する。 Next, when the upper surface of the operation knob 150 lifted upward is pressed in the direction of pushing in (in the direction of arrow B shown in FIG. 3), the elastic contact surface 183 of the elastic portion 181 is brought into contact with the upper surface of the movable contact body 70. The spring member 187 starts to move (slide) toward the movable contact 71 side and reaches the contact portion 75 of the movable contact body 70, so that the elastic portion 181 is in the elastic member storage portion 175. When the elastic surface 183 passes through the contact portion 75, the movable contact body 70 starts swinging so that the movable contact 71 side descends with the contact portion 75 as a swing axis. The movable contact member 70 rapidly swings due to the elastic force of the spring member 187 that has been contracted, and the movable contact 71 abuts against the fixed contact 45 of the fixed contact member 40 instantaneously as shown in FIG. 40 and the movable contact body support 50, that is, Between terminals 43 and 53 is turned on. At this time, the operation knob 150 swings to the other side and becomes stable.

そして上述のように可動接点７１側が下降している途中において、短絡片２００の弾接部２０５が可動接点体７０の下面に当接し、可動接点体７０が揺動し切るまで弾接部２０５は可動接点体７０の下面によって押し下げられる。つまり可動接点７１が固定接点４５にオンするその前後においては、短絡片２００の弾接部２０５が可動接点体７０に常に弾接するので、可動接点体７０と可動接点体支持体５０間は確実に電気的に接続された状態を維持する。このため、スイッチ１−１がオンする際に可動接点体７０が立設部５４の上辺５５上でバウンシングしても、可動接点体支持体５０と可動接点体７０間の電気的接続が確実に確保できてアークの発生を確実に防止できる。 As described above, the elastic contact portion 205 of the short-circuit piece 200 is in contact with the lower surface of the movable contact body 70 while the movable contact 71 side is being lowered, and the elastic contact portion 205 is not swung until the movable contact body 70 is completely swung. It is pushed down by the lower surface of the movable contact body 70. That is, before and after the movable contact 71 is turned on to the fixed contact 45, the elastic contact portion 205 of the short-circuit piece 200 is always elastically contacted with the movable contact body 70, so that the movable contact body 70 and the movable contact body support 50 are reliably connected. Maintain electrical connection. For this reason, even when the movable contact body 70 bounces on the upper side 55 of the standing portion 54 when the switch 1-1 is turned on, the electrical connection between the movable contact body support body 50 and the movable contact body 70 is ensured. It can be ensured and the occurrence of arcing can be reliably prevented.

特にこのスイッチ１−１の場合、短絡片２００の取付基部２０１が可動接点体支持体５０に取り付けられているのでその機械的・電気的接続は確実である。一方、弾接するのは短絡片２００の弾接部２０５と可動接点体７０の下面間だけであり、しかも短絡片２００は前述のように可動接点体支持体５０に取り付けられていてがたつくことがないので弾接部２０５と可動接点体７０間は安定した状態での摺動・弾接となり、これら弾接部２０５と可動接点体７０間の電気的接続も確実になる。さらに弾接部２０５は可動接点体７０の下面に弾接するので弾接した部分において摺動する摺動距離は非常に短く、この点からも弾接部２０５と可動接点体７０間の電気的接続は確実になる。これらのことから可動接点体支持体５０と可動接点体７０間の電気的接続は確実に行え、アークの発生を確実に防止できる。 In particular, in the case of the switch 1-1, since the mounting base 201 of the short-circuit piece 200 is mounted on the movable contact body support 50, the mechanical and electrical connection is reliable. On the other hand, the elastic contact is made only between the elastic contact portion 205 of the short-circuit piece 200 and the lower surface of the movable contact body 70, and the short-circuit piece 200 is attached to the movable contact body support body 50 as described above and does not rattle. Therefore, the elastic contact portion 205 and the movable contact body 70 are slid and elastically contacted in a stable state, and the electrical connection between the elastic contact portion 205 and the movable contact body 70 is also ensured. Further, since the elastic contact portion 205 elastically contacts the lower surface of the movable contact body 70, the sliding distance of sliding at the elastic contact portion is very short. From this point also, electrical connection between the elastic contact portion 205 and the movable contact body 70 is achieved. Will be sure. From these things, the electrical connection between the movable contact body support body 50 and the movable contact body 70 can be reliably performed, and the generation of the arc can be reliably prevented.

また短絡片２００は可動接点体支持体５０に取り付けた取付基部２０１からアーム部２０３を伸ばしてその所定位置に設けた弾接部２０５を可動接点体７０の下面に当接する構成なので、容易にアーム部２０３の長さを長く設定することができ、その分アーム部２０３にいわゆるヘタリが生じにくく、短絡片２００の耐久性が向上する。また短絡片２００は、取付基部２０１から突出したアーム部２０３を折り返すとともに折り返した部分に弾接部２０５を設けて構成されているので、小さい空間においてもアーム部２０３の長さを長く維持することができ、アーム部２０３のいわゆるヘタリを防止することができる。言い換えればスイッチ１−１の小型化が図れる。 Further, since the short-circuit piece 200 has a configuration in which the arm portion 203 is extended from the mounting base portion 201 attached to the movable contact body support body 50 and the elastic contact portion 205 provided at a predetermined position thereof is brought into contact with the lower surface of the movable contact body 70. The length of the portion 203 can be set long, so that the arm portion 203 is less prone to so-called stickiness, and the durability of the short-circuit piece 200 is improved. Further, since the short-circuit piece 200 is configured by folding back the arm portion 203 protruding from the mounting base 201 and providing the elastic contact portion 205 in the folded portion, the length of the arm portion 203 can be maintained long even in a small space. Thus, so-called settling of the arm portion 203 can be prevented. In other words, the switch 1-1 can be downsized.

また上記スイッチ１−１においては、可動接点体７０の幅寸法Ｌ１（図５参照）に対して、短絡片２００のアーム部２０３の折り返した部分の幅寸法Ｌ２（図５参照）を同一寸法以下としている。このため短絡片２００が可動接点体７０の左右両側辺から外方に張り出さないので、スイッチ１−１の幅方向寸法（操作つまみ１５０の揺動軸に沿う方向の寸法）の厚みの薄型化が図れる。 In the switch 1-1, the width L2 (see FIG. 5) of the folded portion of the arm portion 203 of the short-circuit piece 200 is equal to or smaller than the width L1 (see FIG. 5) of the movable contact body 70. It is said. For this reason, since the short-circuit piece 200 does not protrude outward from the left and right sides of the movable contact body 70, the thickness of the switch 1-1 is reduced in the width direction dimension (the dimension along the swing axis of the operation knob 150). Can be planned.

また上記スイッチ１−１においては、可動接点体支持体５０の立設部５４に、可動接点体７０の可動接点７１が固定接点体４０の固定接点４５から所定距離離れたときに短絡片２００のアーム部２０３に当接することでアーム部２０３の上方向への移動を規制するストッパ部５９を設けているので、アーム部２０３を不必要に上方に移動させることなく、その上下動をさらに小さくすることができ、アーム部２０３のいわゆるヘタリをさらに効果的に防止することができる。なおスイッチがオフしているときは弾接部２０５が可動接点体７０から離れていても、元々オフ状態なので何ら問題ない。 In the switch 1-1, when the movable contact 71 of the movable contact body 70 is separated from the fixed contact 45 of the fixed contact body 40 by a predetermined distance from the standing portion 54 of the movable contact body support body 50, Since the stopper portion 59 that restricts the upward movement of the arm portion 203 by contacting the arm portion 203 is provided, the vertical movement is further reduced without unnecessarily moving the arm portion 203 upward. Therefore, the so-called settling of the arm portion 203 can be more effectively prevented. When the switch is off, there is no problem even if the elastic contact portion 205 is away from the movable contact body 70 because it is originally off.

また上記スイッチ１−１においては、可動接点体７０の揺動軸（当接部分７５）を境にして可動・固定接点７１，４５とは反対側に短絡片２００の取付基部２０１を配置し、且つ短絡片２００の弾接部２０５を可動接点体７０の揺動軸（当接部分７５）を越えて可動接点７１側に配置したので、弾接部２０５が可動接点体７０の下面によって押し下げられながら、可動接点体７０の可動接点７１が固定接点体４０の固定接点４５に当接してオンする。従ってオンする際の弾接部２０５の可動接点体７０への電気的接続がより確実になる。同時に短絡片２００全体は固定接点４５から離れた位置に配置されるので、短絡片２００と固定接点体４０間の電気的絶縁状態を良好な状態に維持でき両者間でのアークの発生を確実に防止できる。さらにこのスイッチ１−１の場合、短絡片２００の弾接部２０５は、可動接点体７０の揺動軸近傍部分の下面を弾接しているので、弾接部２０５の上下動が短く、ほとんどその弾接位置が移動せず、この点からも弾接部２０５と可動接点体７０間の電気的接続が確実になり、アークの発生を確実に防止できる。同時にいわゆるヘタリも生じにくく、短絡片２００の耐久性が向上する。 In the switch 1-1, the mounting base 201 of the short-circuit piece 200 is disposed on the opposite side of the movable / fixed contacts 71, 45 with the swing axis (contact portion 75) of the movable contact body 70 as a boundary. Further, since the elastic contact portion 205 of the short-circuit piece 200 is disposed on the movable contact 71 side beyond the swing axis (contact portion 75) of the movable contact body 70, the elastic contact portion 205 is pushed down by the lower surface of the movable contact body 70. However, the movable contact 71 of the movable contact body 70 contacts the fixed contact 45 of the fixed contact body 40 and turns on. Therefore, the electrical connection of the elastic contact portion 205 to the movable contact body 70 when turning on becomes more reliable. At the same time, since the entire short-circuit piece 200 is disposed at a position away from the fixed contact 45, the electrical insulation state between the short-circuit piece 200 and the fixed contact body 40 can be maintained in a good state, and the generation of an arc between the two is ensured. Can be prevented. Further, in the case of this switch 1-1, the elastic contact portion 205 of the short-circuit piece 200 elastically contacts the lower surface of the movable contact body 70 in the vicinity of the swing axis, so that the vertical movement of the elastic contact portion 205 is short, and almost The elastic contact position does not move, and also from this point, the electrical connection between the elastic contact portion 205 and the movable contact body 70 is ensured, and generation of an arc can be reliably prevented. At the same time, so-called settling is unlikely to occur, and the durability of the short-circuit piece 200 is improved.

図１０は本発明の第２実施形態に係るスイッチ１−２の概略断面図（図３に相当する部分）である。同図に示すスイッチ１−２において、前記図１〜図９に示すスイッチ１−１と同一又は相当部分には同一符号を付す。なお以下で説明する事項以外の事項については、前記図１〜図９に示すスイッチ１−１と同じである。このスイッチ１−２において前記スイッチ１−１と相違する点は、短絡片２００の形状のみである。即ちこのスイッチ１−２の短絡片２００は、弾性を有する金属板製（この実施形態ではりん青銅板製）であり、可動接点体支持体５０の支持体本体部５１上に当接する平板状の取付基部２０１と、取付基部２０１の一辺から斜め上方に向けて略直線状に突出してなるアーム部２０３と、アーム部２０３の先端に形成してなる弾接部２０５とを具備して構成されている。取付基部２０１には可動接点体支持体５０に設けた短絡片取付部６１が挿入されてかしめられる一対の小孔からなる取付部２０７が形成されている。アーム部２０３の先端の弾接部２０５の根元部分はストッパ部当接部２１１となっている。弾接部２０５はアーム部２０３の先端部分を上方向に略直角に折り曲げ、さらにその先端側の部分を逆方向に略直角に折り曲げた部分に設けられている。この短絡片２００の場合、前記スイッチ１−１の短絡片２００のようにアーム部２０３によって取付部２０７が覆われることがないので、開口部２０９は設けられていない。このように短絡片２００を構成しても、前記スイッチ１−１に用いた短絡片２００と同じ効果（アーム部２０３を折り返すことによる効果を除く）が生じる。 FIG. 10 is a schematic cross-sectional view (portion corresponding to FIG. 3) of the switch 1-2 according to the second embodiment of the present invention. In the switch 1-2 shown in the figure, the same or corresponding parts as those in the switch 1-1 shown in FIGS. Items other than those described below are the same as those of the switch 1-1 shown in FIGS. The switch 1-2 is different from the switch 1-1 only in the shape of the short-circuit piece 200. That is, the short-circuit piece 200 of the switch 1-2 is made of an elastic metal plate (in this embodiment, made of phosphor bronze plate), and has a flat plate shape that contacts the support body portion 51 of the movable contact body support body 50. The mounting base 201 is configured to include an arm portion 203 that protrudes substantially linearly from one side of the mounting base 201 and an elastic contact portion 205 that is formed at the tip of the arm portion 203. Yes. The mounting base 201 is formed with a mounting portion 207 including a pair of small holes into which the short-circuit piece mounting portion 61 provided on the movable contact body support 50 is inserted and caulked. The base portion of the elastic contact portion 205 at the tip of the arm portion 203 is a stopper contact portion 211. The elastic contact portion 205 is provided at a portion where the distal end portion of the arm portion 203 is bent upward at a substantially right angle, and further, the distal end portion thereof is bent at a substantially right angle in the opposite direction. In the case of the short-circuit piece 200, the mounting portion 207 is not covered by the arm portion 203 unlike the short-circuit piece 200 of the switch 1-1, and therefore the opening 209 is not provided. Even if the short-circuit piece 200 is configured in this manner, the same effect as the short-circuit piece 200 used for the switch 1-1 (excluding the effect of folding the arm portion 203) occurs.

図１１は本発明の第３実施形態に係るスイッチ１−３に用いる１組の可動接点体支持体５０と短絡片２００と可動接点体７０とを示す分解斜視図、図１２はスイッチ１−３の可動接点体７０近傍部分の要部拡大概略断面図（前記図９と同一の状態）である。同図において、前記図１〜図９に示すスイッチ１−１と同一又は相当部分には同一符号を付す。なお以下で説明する事項以外の事項については、前記図１〜図９に示すスイッチ１−１と同じである。 FIG. 11 is an exploded perspective view showing a set of the movable contact body support 50, the short circuit piece 200, and the movable contact body 70 used in the switch 1-3 according to the third embodiment of the present invention. FIG. FIG. 10 is an enlarged schematic cross-sectional view of the main part in the vicinity of the movable contact body 70 (the same state as FIG. 9). In the figure, the same or corresponding parts as those of the switch 1-1 shown in FIGS. Items other than those described below are the same as those of the switch 1-1 shown in FIGS.

このスイッチ１−３に用いる可動接点体支持体５０は、略Ｌ字形状の金属板の屈曲している部分を略直角に折り曲げ、その一方の部分（水平方向を向く部分）を支持体本体部５１、他方の部分（垂直方向を向く部分）を端子５３としている。支持体本体部５１はさらにその一端側の部分が略Ｔ字形状に左右に突出していて、これら突出部分の根元部分を上方向に略直角に折り曲げてその立設する一対の部分を立設部５４としている。両立設部５４の上辺の中央には凹状の軸支部６３が形成されている。軸支部６３の底面は円弧状で凸状に湾曲している。端子５３の左右両側辺の根元側の部分には、幅方向に張り出す小突起状の固定部５７が形成されている。支持体本体部５１の上面には一対の小突起状の短絡片取付部６１が形成されている。なおこの可動接点体支持体５０においては前記スイッチ１−１の可動接点体支持体５０で設けたストッパ部５９は設けられていない。 The movable contact body support 50 used for the switch 1-3 is formed by bending a bent portion of a substantially L-shaped metal plate at a substantially right angle, and supporting one portion (portion facing in the horizontal direction) of the support body. 51, and the other part (the part facing the vertical direction) is a terminal 53. Further, the support body 51 has one end projecting left and right in a substantially T-shape, and a pair of parts standing up by bending the base part of the projecting part upward at a substantially right angle. 54. A concave shaft support portion 63 is formed at the center of the upper side of the compatibility portion 54. The bottom surface of the shaft support 63 is arcuate and curved in a convex shape. A small protrusion-like fixing portion 57 that projects in the width direction is formed on the base side portion of the left and right sides of the terminal 53. A pair of small protrusion-like short-circuit piece mounting portions 61 are formed on the upper surface of the support body 51. The movable contact body support 50 is not provided with the stopper portion 59 provided by the movable contact body support 50 of the switch 1-1.

短絡片２００は弾性を有する金属板製（この実施形態ではりん青銅板製）であり、前記可動接点体支持体５０の支持体本体部５１上に当接する平板状の取付基部２０１と、取付基部２０１の一辺から突出して略１８０°折り返しさらにその先端部分を２本の突起状に形成してなるアーム部２０３と、アーム部２０３の先端に形成してなる弾接部２０５とを具備して構成されている。取付基部２０１には前記可動接点体支持体５０に設けた短絡片取付部６１が挿入される一対の小孔からなる取付部２０７が形成されている。折り返したアーム部２０３の一方の取付部２０７に対向する位置には開口部２０９が設けられ、開口部２０９を通して折り返したアーム部２０３の上部から前記一方の取付部２０７が見えるようにしている。このアーム部２０３は前記スイッチ１−１のアーム部２０３のように可動接点体支持体５０の開口５８に挿入する構造ではないのでストッパ部当接部２１１は設けられておらず、その全体にわたって細帯状に形成する部分が不要でその分その幅を大きくでき、アーム部２０３の耐久性を向上することができる。 The short-circuit piece 200 is made of a metal plate having elasticity (in this embodiment, made of phosphor bronze plate), and has a flat mounting base 201 that contacts the support body 51 of the movable contact body support 50, and a mounting base. 201 is configured to include an arm portion 203 that protrudes from one side and is folded back approximately 180 °, and has a tip portion formed into two protrusions, and an elastic contact portion 205 that is formed at the tip of the arm portion 203. Has been. The mounting base 201 is formed with a mounting portion 207 including a pair of small holes into which the short-circuit piece mounting portion 61 provided on the movable contact body support 50 is inserted. An opening 209 is provided at a position facing one mounting part 207 of the folded arm part 203 so that the one mounting part 207 can be seen from the upper part of the arm part 203 folded through the opening 209. Since the arm portion 203 is not structured to be inserted into the opening 58 of the movable contact body support 50 like the arm portion 203 of the switch 1-1, the stopper portion abutting portion 211 is not provided and the entire portion is thin. A portion to be formed in a belt shape is unnecessary, and the width can be increased correspondingly, and the durability of the arm portion 203 can be improved.

可動接点体７０は略帯状で細長形状の金属板で構成され、その一端近傍の下面に略円板形状の可動接点７１を取り付けている。また長手方向に向かう一対の両側辺のそれぞれの略中央に凸状に突出してなる係止部７３を形成している。また可動接点体７０の可動接点７１を設けた反対側の端部は下方向に屈曲され下方向を向く先端辺は当接部７７となっている。 The movable contact body 70 is formed of a substantially strip-shaped and elongated metal plate, and a substantially disk-shaped movable contact 71 is attached to the lower surface near one end thereof. In addition, a locking portion 73 that protrudes in a convex shape is formed at the approximate center of each of the pair of side edges extending in the longitudinal direction. Further, the end of the movable contact body 70 on the opposite side where the movable contact 71 is provided is bent downward, and the tip side facing downward is a contact portion 77.

このスイッチ１−３の組み立て方法は、前記スイッチ１−１の組み立て方法とほとんど同一であり、異なるのは前記可動接点体支持体５０上に短絡片２００と可動接点体７０とを設置する部分だけなので、その部分の組み立て方法について説明する。即ちまず短絡片２００の取付基部２０１を可動接点体支持体５０の支持体本体部５１上に載置する。このとき支持体本体部５１上の短絡片取付部６１を短絡片２００の取付部２０７に挿入し、開口部２０９に対向している側の一方の短絡片取付部６１の先端をかしめて潰し、これによって短絡片２００を可動接点体支持体５０上に取り付ける。そしてこの短絡片２００を取り付けた可動接点体支持体５０と固定接点体４０とを前記スイッチ１−１の場合と同様の方法によってケース１０内に取り付ける。次にケース１０の接点収納部１１内に可動接点体７０を収納し、その際可動接点体７０の係止部７３を可動接点体支持体５０の軸支部６３に揺動自在に挿入・係止する。可動接点体７０はその係止部７３が軸支部６３の円弧状の底辺に当接して電気的に導通し、この当接した部分を中心に揺動自在となる。 The assembling method of the switch 1-3 is almost the same as the assembling method of the switch 1-1. The only difference is the part where the short-circuit piece 200 and the movable contact body 70 are installed on the movable contact body support 50. So, how to assemble that part will be explained. That is, first, the mounting base 201 of the short-circuit piece 200 is placed on the support body 51 of the movable contact body support 50. At this time, the short-circuit piece attachment portion 61 on the support body 51 is inserted into the attachment portion 207 of the short-circuit piece 200, and the tip of one short-circuit piece attachment portion 61 on the side facing the opening 209 is crushed and crushed. As a result, the short-circuit piece 200 is mounted on the movable contact body support 50. Then, the movable contact body support 50 and the fixed contact body 40 to which the short-circuit piece 200 is attached are attached in the case 10 by the same method as in the case of the switch 1-1. Next, the movable contact body 70 is housed in the contact housing portion 11 of the case 10, and at that time, the locking portion 73 of the movable contact body 70 is inserted and locked to the shaft support portion 63 of the movable contact body support 50 so as to be swingable. To do. The engaging part 73 of the movable contact body 70 comes into contact with the arcuate base of the shaft support part 63 and is electrically connected, and can swing around the contacted part.

その後、図示しないカバー８０、外側ケース１００、操作つまみ１５０を前記スイッチ１−１の場合と同一の方法によって取り付けることで、スイッチ１−３を完成させる。このとき図１２に示すように、弾発部材１８０先端の弾接面１８３は可動接点体７０の上面に弾接している。 Thereafter, the cover 1-3 (not shown), the outer case 100, and the operation knob 150 are attached by the same method as in the case of the switch 1-1, thereby completing the switch 1-3. At this time, as shown in FIG. 12, the elastic contact surface 183 at the tip of the elastic member 180 is in elastic contact with the upper surface of the movable contact body 70.

図１２は可動接点７１が固定接点４５に当接して端子４３，５３間がオンしている状態を示している。そして図３に示すと同様に可動接点７１が固定接点４５から離れて端子４３，５３間がオフしている状態から、図１２に示すオンの状態にさせるには、図１２には図示していない操作つまみ１５０の上方向に持ち上がっている側の上面を押し込む方向に（図３に示す矢印Ｂ方向に）押圧し、弾発部１８１の弾接面１８３を可動接点体７０の上面の係止部７３から見て可動接点７１とは反対側の位置から可動接点７１側に向けて移動（摺動）させ、可動接点体７０の係止部７３（軸支部６３）の部分に至るまではバネ部材１８７が押し縮められて弾発部１８１は弾発部材収納部１７５内に押し込められ、弾接面１８３が係止部７３（軸支部６３）の部分を通過した際に可動接点体７０は軸支部６３の部分を揺動軸として可動接点７１側が下降するように揺動を始め、押し縮められていたバネ部材１８７の弾発力によって可動接点体７０は急速に揺動して図１２に示すように瞬時に可動接点７１が固定接点体４０の固定接点４５に当接し、固定接点体４０と可動接点体支持体５０間、つまり両端子４３，５３間がオンする。 FIG. 12 shows a state in which the movable contact 71 contacts the fixed contact 45 and the terminals 43 and 53 are on. Then, as shown in FIG. 3, in order to change the movable contact 71 away from the fixed contact 45 and the terminals 43 and 53 from the OFF state to the ON state shown in FIG. The upper surface of the operation knob 150 that is lifted upward is pressed in the direction of pushing in (in the direction of arrow B shown in FIG. 3), and the elastic contact surface 183 of the elastic portion 181 is locked to the upper surface of the movable contact body 70. It is moved (sliding) from the position opposite to the movable contact 71 as viewed from the portion 73 toward the movable contact 71, and until it reaches the locking portion 73 (shaft support portion 63) of the movable contact body 70. When the member 187 is compressed and contracted, the resilient portion 181 is pushed into the resilient member housing portion 175, and when the resilient contact surface 183 passes through the portion of the locking portion 73 (the shaft support portion 63), the movable contact body 70 is pivoted. The movable contact 71 side is lowered with the support 63 as a swing axis. The movable contact body 70 rapidly swings due to the elastic force of the spring member 187 that has started to oscillate, and the movable contact 71 instantaneously becomes the fixed contact of the fixed contact body 40 as shown in FIG. 45, the fixed contact body 40 and the movable contact body support body 50, that is, the terminals 43 and 53 are turned on.

そして上述のように可動接点７１側が下降している途中において（または下降する前から）、短絡片２００の弾接部２０５が可動接点体７０の下面に当接し、可動接点体７０が揺動し切るまで弾接部２０５は可動接点体７０の下面によって押し下げられる。つまり少なくとも可動接点７１が固定接点４５にオンするその前後においては、短絡片２００の弾接部２０５が可動接点体７０に常に弾接するので、可動接点体７０と可動接点体支持体５０間は確実に電気的に接続された状態を維持する。このため、スイッチ１−１がオンする際に可動接点体７０が立設部５４の軸支部６３内でバウンシングしても、可動接点体支持体５０と可動接点体７０間の電気的接続が確実に確保できてアークの発生を確実に防止できる。 As described above, the elastic contact portion 205 of the short-circuit piece 200 comes into contact with the lower surface of the movable contact body 70 while the movable contact 71 side is being lowered (or before it is lowered), and the movable contact body 70 is swung. The elastic contact portion 205 is pushed down by the lower surface of the movable contact body 70 until it is cut. That is, at least before and after the movable contact 71 is turned on to the fixed contact 45, the elastic contact portion 205 of the short-circuit piece 200 is always elastically contacted with the movable contact body 70, so that there is no doubt between the movable contact body 70 and the movable contact body support 50. The state of being electrically connected to is maintained. For this reason, even when the movable contact body 70 bounces within the shaft support portion 63 of the standing portion 54 when the switch 1-1 is turned on, the electrical connection between the movable contact body support body 50 and the movable contact body 70 is reliable. It is possible to reliably prevent arcing.

またこのように構成することで、上記したスイッチ１−１で説明したのと同一の効果（立設部５４にストッパ部５９を設けてアーム部２０３を係止することによる効果を除く）が生じる。さらにこのスイッチ１−３においては、一対の立設部５４が短絡片２００の上部を塞がないので（ストッパ部５９が設けられていないので）、可動接点体支持体５０への短絡片２００の取り付けが容易になる。 Further, by configuring in this way, the same effect as described in the above switch 1-1 (excluding the effect of locking the arm part 203 by providing the stopper part 59 in the standing part 54) occurs. . Furthermore, in this switch 1-3, since a pair of standing part 54 does not block the upper part of the short circuit piece 200 (because the stopper part 59 is not provided), the short circuit piece 200 to the movable contact body support 50 is not provided. Easy to install.

以上本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。なお直接明細書及び図面に記載がない何れの形状や構造や材質であっても、本願発明の作用・効果を奏する以上、本願発明の技術的思想の範囲内である。例えば、上記スイッチ１−１〜１−３では、可動接点体７０の揺動軸（当接部分７５）を境にして可動・固定接点７１，４５とは反対側に短絡片２００の取付基部２０１を配置し、且つ短絡片２００の弾接部２０５を可動接点体７０の揺動軸（当接部分７５）を越えて可動接点７１側に配置したが、弾接部２０５は可動接点体７０の揺動軸（当接部分７５）を境にして可動接点７１の反対側に配置するように構成してもよい。その場合も、短絡片２００の弾接部２０５は可動接点体７０の揺動軸近傍部分の下面を弾接するように構成すれば、弾接部２０５の上下動が短くてほとんどその弾接位置が移動しないので、弾接部２０５と可動接点体７０間の電気的接続が確実になり、いわゆるヘタリも生じにくく、好適である。また上記スイッチ１−１〜１−３ではアーム部２０３の先端に弾接部２０５を設置したが、アーム部の途中に弾接部を設置してもよい。またつまみ外装体１６０とつまみ本体１７０は、一体成形にて１つの部品で構成しても良い。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the switches 1-1 to 1-3, the mounting base 201 of the short-circuit piece 200 is provided on the opposite side of the movable / fixed contacts 71 and 45 with the swing axis (contact portion 75) of the movable contact body 70 as a boundary. And the elastic contact portion 205 of the short-circuit piece 200 is disposed on the movable contact 71 side beyond the swing axis (contact portion 75) of the movable contact body 70. You may comprise so that it may arrange | position on the opposite side of the movable contact 71 by making a rocking | fluctuation shaft (contact part 75) into a boundary. Even in this case, if the elastic contact portion 205 of the short-circuit piece 200 is configured to elastically contact the lower surface of the movable contact body 70 in the vicinity of the swing axis, the vertical movement of the elastic contact portion 205 is short and the elastic contact position is almost the same. Since it does not move, the electrical connection between the elastic contact portion 205 and the movable contact body 70 is ensured, and so-called sag hardly occurs, which is preferable. In the switches 1-1 to 1-3, the elastic contact portion 205 is provided at the tip of the arm portion 203, but the elastic contact portion may be provided in the middle of the arm portion. Further, the knob outer body 160 and the knob main body 170 may be formed as a single part by integral molding.

１−１スイッチ
１０ケース
１１接点収納部
４０固定接点体
４５固定接点
５０可動接点体支持体
５４立設部
５９ストッパ部
７０可動接点体
７１可動接点
８０カバー
１００外側ケース
１５０操作つまみ
１９０操作部
２００短絡片
２０１取付基部
２０３アーム部
２０５弾接部 1-1 Switch 10 Case 11 Contact accommodating part 40 Fixed contact body 45 Fixed contact 50 Movable contact body support body 54 Standing part 59 Stopper part 70 Movable contact body 71 Movable contact 80 Cover 100 Outer case 150 Operation knob 190 Operation part 200 Short circuit Piece 201 Mounting base 203 Arm part 205 Elastic contact part

Claims

A case having a contact housing portion therein;
At least a pair of a fixed contact body and a movable contact body support body installed on the bottom surface of the contact housing portion of the case;
A movable contact body having a movable contact which is pivotally supported by an upright portion standing from a bottom surface of the contact housing portion of the movable contact body support body, and which is movable toward and away from a fixed contact provided on the fixed contact body; ,
An operation knob installed on the movable contact body and having an operation section for swinging the movable contact body by moving while contacting the upper surface of the movable contact body;
A short circuit having an attachment base attached to the movable contact body support, an arm part protruding from the attachment base, and an elastic contact part that is provided at the front or middle of the arm part and elastically contacts the lower surface of the movable contact body. A switch characterized by the installation of a piece.

The switch according to claim 1, wherein
The switch is characterized in that the elastic contact portion of the short-circuit piece elastically contacts the lower surface of the movable contact body in the vicinity of the swing axis.

The switch according to claim 2, wherein
The mounting base of the short-circuit piece is disposed on the opposite side of the movable / fixed contact with the swing axis of the movable contact body as a boundary, and the elastic contact portion of the short-circuit piece is connected to the swing shaft of the movable contact body. A switch characterized by being arranged on the movable contact side beyond.

The switch according to claim 2 or 3,
The switch is characterized in that the short-circuit piece is configured by folding back an arm portion protruding from the mounting base and providing the elastic contact portion in a folded portion.

The switch according to claim 4, wherein
The switch, wherein the width dimension of the folded portion of the arm portion of the short-circuiting piece is equal to or smaller than the width dimension of the movable contact body.

The switch according to claim 5, wherein
The movable contact body support body has an upright portion in contact with the arm portion of the short-circuit piece when the movable contact point of the movable contact body is separated from the fixed contact point of the fixed contact body by a predetermined distance. A switch provided with a stopper portion for restricting upward movement.