JP5517901B2

JP5517901B2 - Swing switch

Info

Publication number: JP5517901B2
Application number: JP2010271426A
Authority: JP
Inventors: 史之上仲; 弘誠西脇; 直宏釜谷
Original assignee: 帝国通信工業株式会社
Priority date: 2010-12-06
Filing date: 2010-12-06
Publication date: 2014-06-11
Anticipated expiration: 2030-12-06
Also published as: JP2012123929A

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スイッチ（シーソー型スイッチ）に関し、特に電源のオンオフに用いて好適な揺動スイッチに関するものである。 The present invention relates to a rocking switch (seesaw type switch) for switching a switch contact by rocking an operation knob, and more particularly to a rocking switch suitable for use in power on / off.

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、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立設部に揺動自在に軸支される軸支部を設け且つ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揺動することで前記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、を具備する揺動スイッチにおいて、前記可動接点体と前記操作つまみの操作部の間に、その両端が可動接点体の軸支部を挟んだ両側に取り付けられることでその中間部分を前記操作部に弾接させる弾接部としてなる板バネを設置し、この板バネの弾接部に前記操作つまみの操作部を弾接して摺動することで可動接点体の軸支部を立設部に押し付けながら揺動させて可動接点と固定接点間をオンオフし、さらに前記可動接点体の前記可動接点を設けた反対の端部側に、可動接点体の長手方向に沿う両側辺から突出する突出部を設け、これら突出部の軸支部側の辺をつまみ当接部とし、一方、前記操作つまみには、前記可動接点体に設けたつまみ当接部に当接して直接可動接点体を駆動することで、固定接点に溶着した可動接点を引き剥がす押圧部を設けたことを特徴とする揺動スイッチにある。 The invention according to claim 1 of the present application is a case having a contact housing portion, 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 support body. And a movable contact body having a movable contact that is pivotally supported on the standing portion and having a movable contact that contacts and separates from the fixed contact provided on the fixed contact body, and is installed on the upper portion of the movable contact body. And an operation knob having an operation portion for swinging the movable contact body by moving the movable contact body, the movable contact body between the movable contact body and the operation portion of the operation knob. A leaf spring is installed as an elastic contact portion that is attached to both sides of the shaft support portion to elastically contact the intermediate portion with the operation portion, and the operation portion of the operation knob is elastically moved to the elastic contact portion of the leaf spring. Movable contact body by sliding in contact And the shaft support is swung while pushing the standing portion and off between the movable contacts and the fixed contacts, the more opposite end side of the provided movable contact of the movable contact member, along the longitudinal direction of the movable contact Protrusions projecting from both sides are provided, and the sides of the projecting parts on the side of the shaft support part are used as knob contact parts. On the other hand, the operation knob directly contacts the knob contact part provided on the movable contact body. The swing switch is characterized in that a pressing portion for peeling off the movable contact welded to the fixed contact is provided by driving the movable contact.

本願請求項２に記載の発明は、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立設部に揺動自在に軸支される軸支部を設け且つ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揺動することで前記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、を具備する揺動スイッチにおいて、前記可動接点体と前記操作つまみの操作部の間に、その両端が可動接点体の軸支部を挟んだ両側に取り付けられることでその中間部分を前記操作部に弾接させる弾接部としてなる板バネを設置し、この板バネの弾接部に前記操作つまみの操作部を弾接して摺動することで可動接点体の軸支部を立設部に押し付けながら揺動させて可動接点と固定接点間をオンオフし、さらに前記操作つまみの対向する一対の外周側面の下端部から下方に延ばすように設けた側板部の一方の側辺を押圧部とし、この押圧部を、前記可動接点体に設けたつまみ当接部に当接して直接可動接点体を駆動させることで、固定接点に溶着した可動接点を引き剥がす構成としたことを特徴とする揺動スイッチにある。 The invention according to claim 2 of the present application is a case having a contact housing portion, 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 support body. And a movable contact body having a movable contact that is pivotally supported on the standing portion and having a movable contact that contacts and separates from the fixed contact provided on the fixed contact body, and is installed on the upper portion of the movable contact body. And an operation knob having an operation portion for swinging the movable contact body by moving the movable contact body, the movable contact body between the movable contact body and the operation portion of the operation knob. A leaf spring is installed as an elastic contact portion that is attached to both sides of the shaft support portion to elastically contact the intermediate portion with the operation portion, and the operation portion of the operation knob is elastically moved to the elastic contact portion of the leaf spring. Movable contact body by sliding in contact One of the side plates provided to extend downward from the lower ends of a pair of outer peripheral side surfaces of the operation knob facing each other while swinging while pressing the shaft support portion against the upright portion to turn on and off between the movable contact and the fixed contact. A side portion is a pressing portion, and the pressing portion is brought into contact with a knob contact portion provided on the movable contact body to directly drive the movable contact body, thereby peeling the movable contact welded to the fixed contact. The swing switch is characterized in that.

本願請求項３に記載の発明は、請求項１に記載の揺動スイッチであって、前記操作つまみの対向する一対の外周側面の下端部から下方に延ばすように側板部を設け、これら側板部の一方の側辺を前記押圧部としたことを特徴とする揺動スイッチにある。 The invention according to claim 3 of the present application is the swing switch according to claim 1 , wherein the side plate portions are provided so as to extend downward from the lower ends of the pair of outer peripheral side surfaces facing the operation knob. One of the sides is the pressing portion.

請求項１に記載の発明によれば、操作つまみの操作部と可動接点体の間に両者間を弾発する板バネを設置したので、可動接点体は常に可動接点体支持体の立設部に押し付けられ、従ってスイッチオン時に可動接点体が立設部上でバウンシングすることはなく、可動接点体と可動接点体支持体間の電気的接続を常に確実に維持でき、アークは生じず、揺動スイッチの長寿命化が図れる。また板バネは簡単な構造であり、且つ可動接点体の長さとほぼ同じ程度の長さに形成できるので、十分な弾発力が簡単に得られるばかりか、十分な耐久性が得られる。また板バネは可動接点体の上部に取り付けるので、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。 According to the first aspect of the present invention, since the leaf spring that repels between the operation portion of the operation knob and the movable contact body is installed, the movable contact body is always on the standing portion of the movable contact body support body. Therefore, when the switch is turned on, the movable contact body does not bounce on the standing part, and the electrical connection between the movable contact body and the movable contact body support body can always be maintained reliably, no arc is generated, and the rocking motion The life of the switch can be extended. Further, since the leaf spring has a simple structure and can be formed to have a length substantially the same as the length of the movable contact body, sufficient elasticity can be easily obtained and sufficient durability can be obtained. Moreover, since the leaf spring is attached to the upper part of the movable contact body, the thickness in the direction along the swing axis of the operation knob can be reduced.

揺動スイッチ１−１の斜視図である。It is a perspective view of the swing switch 1-1. 図１のＡ−Ａ概略断面図である。It is an AA schematic sectional drawing of FIG. 揺動スイッチ１−１の分解斜視図である。It is a disassembled perspective view of the swing switch 1-1. 揺動スイッチ１−１を下側から見た分解斜視図である。It is the disassembled perspective view which looked at the swing switch 1-1 from the lower side. 揺動スイッチ１−１の動作説明図である。It is operation | movement explanatory drawing of the rocking | swiveling switch 1-1. 揺動スイッチ１−１の動作説明図である。It is operation | movement explanatory drawing of the rocking | swiveling switch 1-1. 揺動スイッチ１−２の概略断面図である。It is a schematic sectional drawing of the rocking | swiveling switch 1-2. 板バネ２００−２の斜視図である。It is a perspective view of leaf spring 200-2. 揺動スイッチ１−２の動作説明図である。It is operation | movement explanatory drawing of the rocking | swiveling switch 1-2. 揺動スイッチ１−３の概略断面図である。It is a schematic sectional drawing of the rocking | swiveling switch 1-3. 板バネ２００−３及び可動接点体７０−３の斜視図である。It is a perspective view of leaf spring 200-3 and movable contact body 70-3. 板バネ２００−３を下側から見た斜視図である。It is the perspective view which looked at the leaf | plate spring 200-3 from the lower side. 特許文献１に記載の電源スイッチの可動接点体支持体（５）と短絡片（６）と可動接点体（３）とを示す図である。It is a figure which shows the movable contact body support body (5), short circuit piece (6), and movable contact body (3) of the power switch of patent document 1. FIG.

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。
〔第１実施形態〕
図１は本発明の第１実施形態に係る揺動スイッチ１−１の斜視図、図２は図１のＡ−Ａ概略断面図、図３は揺動スイッチ１−１の分解斜視図、図４は揺動スイッチ１−１を下側から見た分解斜視図である。これらの図に示すように揺動スイッチ１−１は、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内の底面に設置される一対の固定接点体４０及び可動接点体支持体５０と、可動接点体支持体５０の下記する立設部５４に揺動自在に軸支される可動接点体７０と、可動接点体７０の上面に取り付けられる板バネ２００と、可動接点体７０及び板バネ２００の上部に設置される操作つまみ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.
[First Embodiment]
1 is a perspective view of a rocking switch 1-1 according to the first embodiment of the present invention, FIG. 2 is a schematic cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is an exploded perspective view of the rocking switch 1-1. 4 is an exploded perspective view of the swing switch 1-1 as viewed from below. As shown in these figures, the swing switch 1-1 includes a case 10 having a contact housing portion 11, a pair of fixed contact body 40 and a movable contact body support installed on the bottom surface of the contact housing portion 11 of the case 10. Body 50, movable contact body 70 pivotally supported by a standing portion 54 described below of movable contact body support body 50, plate spring 200 attached to the upper surface of movable contact body 70, and movable contact body 70. And an operation knob 150 installed on the upper portion of the leaf spring 200. 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.

ケース１０は合成樹脂を上面が解放された略矩形箱型に一体成形して構成されている。ケース１０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内の底面には、一対のスリット状の端子挿入孔１５が１列に直線状に並んで設けられている。ケース１０の４つの外周側面の内の面積の大きい対向する一対の外周側面１２の上部中央にはそれぞれ軸支孔１３が設けられ、また面積の小さい対向する一対の外周側面１４にはそれぞれ弾発係止部１７が設けられている。弾発係止部１７は上下方向に延びて外方向に膨らむ略Ｖ字状で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１９が形成されている。図２に示すように、ケース１０の接点収納部１１内の４つの角部にはストッパ部２１が形成されている。なお図２では奥側の２つのストッパ部２１のみが記載されている。ストッパ部２１はそれぞれその上面が下記する操作つまみ１５０の４つの当接部１６３に当接する。 The case 10 is formed by integrally molding a synthetic resin into a substantially rectangular box shape with an open upper surface. The case 10 is formed with a concave contact housing part 11 whose upper surface is open. A pair of slit-like terminal insertion holes 15 are provided in a line in a straight line on the bottom surface in the contact housing portion 11. A shaft support hole 13 is provided in the upper center of each of the pair of opposed outer peripheral side surfaces 12 having a large area among the four outer peripheral side surfaces of the case 10, and each of the pair of opposing outer peripheral side surfaces 14 having a smaller area has an impact. A locking portion 17 is provided. The bullet locking part 17 is a substantially V-shaped and flat arm that extends in the vertical direction and expands outward, and has elasticity. An uneven locking portion 19 is formed on the outer surface of the upper portion of the arm. As shown in FIG. 2, stopper portions 21 are formed at the four corners in the contact housing portion 11 of the case 10. In FIG. 2, only the two stopper portions 21 on the back side are shown. Each upper surface of the stopper portion 21 comes into contact with four contact portions 163 of the operation knob 150 described below.

固定接点体４０は、略矩形状の金属板の所定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）を接点固定部４１、他方の部分（垂直方向を向く部分）を端子４３としている。接点固定部４１には略円板形状の固定接点４５が取り付けられている。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 predetermined portion of a substantially rectangular metal plate at a substantially right angle, and contacts one portion (horizontal portion) as a contact fixing portion 41 and the other portion (vertical portion) as a terminal. 43. A substantially disc-shaped fixed contact 45 is attached to the contact fixing portion 41. A small protrusion-shaped fixing portion 47 that projects in the width direction is formed at the base side portion of the left and right sides of the 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。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。 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. 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.

可動接点体７０は略帯状で平板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。また長手方向に沿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間の部分を軸支部７５としている。可動接点体７０の両端部からは凸形状の突起が突出して上方向に略直角に折り曲げられ、その先端側の部分は板バネ係止部７７となっている。つまり板バネ係止部７７は可動接点体７０の軸支部７５を挟んだその両側に設けられている。また可動接点体７０の一方の端部（可動接点体支持体５０側の端部）側には、可動接点体７０の長手方向に沿う両側辺から突出する突出部７９が設けられ、これら突出部７９の軸支部７５側の辺をつまみ当接部８１としている。また突出部７９を設けた側の板バネ係止部７７の両側には舌片状の小突起を突出して下方向に折り曲げてなる当接部７８が形成されている。 The movable contact body 70 is formed of a substantially strip-shaped and thin plate-shaped 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 in a substantially center of each of the pair of side edges along the longitudinal direction, and a portion between the pair of locking portions 73 is a shaft support portion 75. Convex-shaped protrusions protrude from both end portions of the movable contact body 70 and are bent at a substantially right angle upward, and a portion on the tip end side is a leaf spring locking portion 77. That is, the leaf spring locking portions 77 are provided on both sides of the movable contact body 70 with the shaft support portion 75 interposed therebetween. Further, on one end portion (end portion on the movable contact body support 50 side) side of the movable contact body 70, a projecting portion 79 projecting from both sides along the longitudinal direction of the movable contact body 70 is provided. A side of the shaft support portion 75 side of 79 is a knob contact portion 81. Further, on both sides of the leaf spring locking portion 77 on the side where the protruding portion 79 is provided, a contact portion 78 is formed by protruding a tongue-like small protrusion and bending it downward.

板バネ２００は、弾性金属板を帯状で略直線状に形成し、その両端近傍に前記可動接点体７０の板バネ係止部７７を係止する寸法の略矩形状の貫通孔からなる係止部２０１を設けて構成されている。板バネ２００の中央部分には、前記可動接点体７０に向けて（下方向に向けて）略Ｖ字状に突出する突出形状の弾接部２０３が形成されている。 The leaf spring 200 is formed by forming an elastic metal plate in a strip shape and in a substantially linear shape, and is formed by a substantially rectangular through hole having a dimension for locking the leaf spring locking portion 77 of the movable contact body 70 in the vicinity of both ends thereof. The unit 201 is provided. At the center portion of the leaf spring 200, a protruding elastic contact portion 203 is formed that protrudes in a substantially V shape toward the movable contact body 70 (downward).

操作つまみ１５０は合成樹脂の成形品であり、下面が解放された略箱型に形成されている。この操作つまみ１５０の４つの外周側面の内の面積の大きい対向する一対の外周側面１５１の略中央にはそれぞれ前記ケース１０の軸支孔１３に回動自在に挿入される軸支突起１５３が設けられている。操作つまみ１５０下面の凹部１５５内には図２に示すように凹部１５５底面の中央から下方向に向けて突出する略平板状の操作部１５７が設けられている。操作部１５７の下端は弾接摺接部１５９になっている。外周側面１５１の下端部からは外周側面１５１を下方向に延ばすように板状の側板部１６０が突出して設けられており、側板部１６０の一方の側辺には、直線状の押圧部１６１が形成されている。両側板部１６０の内側間（凹部１５５内）の間隔は、その間に前記可動接点体７０の係止部７３近傍部分は挿入できるが、可動接点体７０の突出部７９の部分は挿入できない寸法に形成されている。これによって図６に示すように、可動接点７１が固定接点４５に当接した状態のまま操作つまみ１５０のみを左回転していくと、点線で示すように、その押圧部１６１が可動接点体７０のつまみ当接部８１に当接する位置関係となっている。操作つまみ１５０の外周下面の４隅の部分は、前記ケース１０のストッパ部２１に当接する当接部１６３となっている。 The operation knob 150 is a molded product of synthetic resin, and is formed in a substantially box shape with the lower surface released. At the center of a pair of opposed outer peripheral side surfaces 151 having a large area among the four outer peripheral side surfaces of the operation knob 150, there are provided shaft support protrusions 153 that are rotatably inserted into the shaft support holes 13 of the case 10, respectively. It has been. In the recess 155 on the lower surface of the operation knob 150, as shown in FIG. 2, a substantially flat operation portion 157 protruding downward from the center of the bottom surface of the recess 155 is provided. The lower end of the operation unit 157 is an elastic contact portion 159. A plate-like side plate 160 projects from the lower end portion of the outer peripheral side 151 so as to extend the outer peripheral side 151 downward. A linear pressing portion 161 is provided on one side of the side plate 160. Is formed. The distance between the insides of the side plate portions 160 (inside the recess 155) is such that the portion near the locking portion 73 of the movable contact body 70 can be inserted therebetween, but the protruding portion 79 portion of the movable contact body 70 cannot be inserted. Is formed. Accordingly, as shown in FIG. 6, when only the operation knob 150 is rotated counterclockwise while the movable contact 71 is in contact with the fixed contact 45, the pressing portion 161 is moved to the movable contact body 70 as indicated by a dotted line. It is in a positional relationship in contact with the knob contact portion 81. The four corners of the outer peripheral lower surface of the operation knob 150 are contact portions 163 that contact the stopper portion 21 of the case 10.

揺動スイッチ１−１を組み立てるには、ケース１０の接点収納部１１内に可動接点体支持体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。 In order to assemble the swing switch 1-1, the movable contact body support body 50 and the fixed contact body 40 are inserted into the contact housing portion 11 of the case 10, and the terminal 43 and the movable contact body support body 50 of the fixed contact body 40. The terminal 53 is inserted into each terminal insertion hole 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 crushed, thereby fixing each fixed contact body 40 and the movable contact body support 50 to the bottom surface in the case 10. Further, although not shown in the figure, 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 a slight gap between the terminals 43 and 53 and the terminal insertion hole 15 is filled. Seal the gaps.

次に可動接点体７０の両板バネ係止部７７にそれぞれ板バネ２００の係止部２０１を係合して一体化する。そしてこの可動接点体７０をケース１０の接点収納部１１内に収納し、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の軸支部７５を可動接点体支持体５０の上辺５５に当接させる。 Next, the locking portions 201 of the leaf springs 200 are engaged with and integrated with the leaf spring locking portions 77 of the movable contact body 70, respectively. The movable contact body 70 is housed in the contact housing portion 11 of the case 10, and the movable contact body locking portion 56 of the movable contact body support 50 is locked to the locking portion 73 of the movable contact body 70. The shaft support portion 75 of the contact body 70 is brought into contact with the upper side 55 of the movable contact body support 50.

そしてケース１０の上に操作つまみ１５０を配置し、その際操作つまみ１５０の下部を接点収納部１１内に挿入し、操作つまみ１５０の軸支突起１５３をケース１０の軸支孔１３に回動自在に挿入する。これによって揺動スイッチ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 operation knob 150 is arranged on the case 10, and at that time, the lower part of the operation knob 150 is inserted into the contact housing 11, and the shaft support protrusion 153 of the operation knob 150 is freely rotatable in the shaft support hole 13 of the case 10. Insert into. This completes the assembly of the swing 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.

図２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の左側の当接部１６３がケース１０のストッパ部２１に当接し、可動接点体７０の当接部７８がケース１０底面に当接し、操作つまみ１５０の操作部１５７の弾接摺接部１５９が板バネ２００の弾接部２０３の中央よりも可動接点７１から離れた側の部分を押圧（弾接）して板バネ２００を下方向に撓め、これによって可動接点体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間がオフになって安定している状態である。 FIG. 2 shows a state where the operation knob 150 is fully swung to one side and the switch is turned off to be stable. In the state shown in the figure, the left contact portion 163 of the operation knob 150 contacts the stopper portion 21 of the case 10, the contact portion 78 of the movable contact body 70 contacts the bottom surface of the case 10, and the operation knob 150 is operated. The elastic contact portion 159 of the portion 157 presses (elastically contacts) a portion of the leaf spring 200 on the side farther from the movable contact 71 than the center of the elastic contact portion 203 to bend the leaf spring 200 downward. As a result, the movable contact 71 of the movable contact body 70 is separated from the fixed contact 45 of the fixed contact body 40, and between the fixed contact body 40 and the movable contact body support body 50, that is, between both terminals 43 and 53, is stable. State.

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２に示す矢印Ｂ方向に）押圧すると、操作つまみ１５０の操作部１５７の弾接摺接部１５９が板バネ２００の弾接部２０３の上面を押圧して板バネ２００を撓ませながら可動接点７１側に向けて移動（摺動）を始める。そして弾接摺接部１５９が弾接部２０３の中央付近を通過した際に、可動接点体７０は軸支部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、湾曲している板バネ２００の弾発力によって可動接点体７０は急速に揺動して図５に示すように瞬時に可動接点７１が固定接点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操作つまみ１５０の右側の当接部１６３がケース１０のストッパ部２１に当接し、安定する。このとき操作つまみ１５０の操作部１５７の弾接摺接部１５９が板バネ２００の弾接部２０３の中央よりも可動接点７１側の部分を押圧（弾接）して板バネ２００を下方向に撓め、これによって可動接点体７０はこの位置に安定して停止している。 Next, when the upper surface of the operation knob 150 lifted upward is pressed (in the direction of arrow B shown in FIG. 2), the elastic contact portion 159 of the operation portion 157 of the operation knob 150 becomes a leaf spring. The upper surface of the elastic contact portion 203 of 200 is pressed and the leaf spring 200 is bent to start moving (sliding) toward the movable contact 71 side. Then, when the elastic contact portion 159 passes near the center of the elastic contact portion 203, the movable contact body 70 starts to swing so that the movable contact 71 side descends with the shaft support portion 75 as the swing axis, and is curved. The movable contact body 70 is rapidly swung by the elastic force of the leaf spring 200, and the movable contact 71 abuts against the fixed contact 45 instantaneously as shown in FIG. The body 50, that is, the terminals 43 and 53 are turned on. At this time, the operation knob 150 fully swings to the other side, and the right contact portion 163 of the operation knob 150 contacts the stopper portion 21 of the case 10 and is stabilized. At this time, the elastic contact portion 159 of the operation portion 157 of the operation knob 150 presses (elastically contacts) the portion on the movable contact 71 side with respect to the center of the elastic contact portion 203 of the leaf spring 200 so that the leaf spring 200 is moved downward. As a result, the movable contact 70 is stably stopped at this position.

以上のように揺動スイッチ１−１は、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）に揺動自在に軸支される軸支部７５を設け且つ固定接点体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の上部に設置され揺動することで可動接点体７０を揺動操作する操作部１５７を有する操作つまみ１５０とを具備し、さらに可動接点体７０と操作つまみ１５０の操作部１５７の間に、その両端が可動接点体７０の軸支部７５を挟んだ両側に取り付けられることでその中間部分を操作部１５７に弾接させる弾接部２０３としてなる板バネ２００を設置し、この板バネ２００の弾接部２０３に操作つまみ１５０の操作部１５７を弾接して摺動することで可動接点体７０の軸支部７５を立設部５４に押し付けながら揺動させて可動接点７１と固定接点４５間をオンオフするように構成されている。 As described above, the swing switch 1-1 includes the case 10 having the contact housing part 11, and at least a pair of the fixed contact body 40 and the movable contact body support body 50 installed on the bottom surface of the contact housing part 11 of the case 10. The fixed contact body 40 is provided with a shaft support portion 75 that is pivotally supported on a standing portion 54 (the upper side 55) that stands upright from the bottom surface of the contact accommodating portion 11 of the movable contact body support body 50. A movable contact body 70 having a movable contact 71 that contacts and separates from the contact 45, and an operation knob 150 that is installed on the upper portion of the movable contact body 70 and has an operation portion 157 that swings and operates the movable contact body 70. Furthermore, between the movable contact body 70 and the operation portion 157 of the operation knob 150, both ends thereof are attached to both sides sandwiching the shaft support portion 75 of the movable contact body 70, so that the intermediate portion is elastically contacted with the operation portion 157. Bullet A plate spring 200 as a portion 203 is installed, and the operation portion 157 of the operation knob 150 is elastically contacted with the elastic contact portion 203 of the plate spring 200 to slide, so that the shaft support portion 75 of the movable contact body 70 is erected. The movable contact 71 and the fixed contact 45 are turned on and off by being swung while being pressed.

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、可動接点体７０は常に板バネ２００によって可動接点体支持体５０の立設部５４（その上辺５５）に押し付けられる。つまり可動接点７１が固定接点４５に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ようとしても、板バネ２００の弾発力によって前記バウンシングは防止され、これによって可動接点体支持体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。 In the middle of the lowering of the movable contact 71 side as described above, the movable contact body 70 is always pressed against the standing portion 54 (the upper side 55) of the movable contact body support 50 by the leaf spring 200. That is, even when the movable contact body 70 tries to bouncing on the upper side 55 of the standing portion 54 when the movable contact 71 is turned on to the fixed contact 45, the bouncing is prevented by the elastic force of the leaf spring 200. The electrical connection between the body support body 50 and the movable contact body 70 can be reliably ensured, and the occurrence of an arc can be reliably prevented.

即ちこの揺動スイッチ１−１によれば、操作つまみ１５０の操作部１５７と可動接点体７０の間に両者間を弾発する板バネ２００を設置したので、可動接点体７０は常に可動接点体支持体５０の立設部５４に押し付けられ、従ってスイッチオン時に可動接点体７０が立設部５４上でバウンシングすることはなく、可動接点体７０と可動接点体支持体５０間の電気的接続を常に確実に維持でき、アークは生じず、揺動スイッチ１−１の長寿命化が図れる。同時に板バネ２００の弾発力によって固定接点４５に当接した可動接点７１を固定接点４５に押し付けるので、両接点４５，７１間の接触圧が大きくなりチャタリング等の接触不良も確実に防止できる。また板バネ２００は簡単な構造であり、且つ可動接点体７０の長さとほぼ同じ程度の長さに形成できるので、十分な弾発力が簡単に得られるばかりか、十分な耐久性が得られる。また板バネ２００は可動接点体７０の上部に取り付けられるので、操作つまみ１５０の揺動軸Ｌ（図１参照）に沿う方向の厚みの薄型化が図れる。 That is, according to the swing switch 1-1, since the leaf spring 200 is installed between the operation portion 157 of the operation knob 150 and the movable contact body 70, the movable contact body 70 is always supported by the movable contact body. Therefore, when the switch is turned on, the movable contact body 70 does not bounce on the standing section 54, and the electrical connection between the movable contact body 70 and the movable contact body support body 50 is always maintained. It can be reliably maintained, no arc is generated, and the life of the swing switch 1-1 can be extended. At the same time, the movable contact 71 abutting against the fixed contact 45 is pressed against the fixed contact 45 by the elastic force of the leaf spring 200, so that the contact pressure between both the contacts 45 and 71 is increased, and contact failure such as chattering can be reliably prevented. Further, since the leaf spring 200 has a simple structure and can be formed to have a length approximately the same as the length of the movable contact body 70, sufficient elasticity can be easily obtained, and sufficient durability can be obtained. . Further, since the leaf spring 200 is attached to the upper portion of the movable contact body 70, the thickness in the direction along the swing axis L (see FIG. 1) of the operation knob 150 can be reduced.

さらにこの揺動スイッチ１−１によれば、板バネ２００の弾接部２０３の部分を可動接点体７０に向けて突出する突出形状にしているので、図５に矢印Ｃで示すように、可動接点７１が固定接点４５に当接した際の操作部１５７による弾接部２０３の押圧方向（弾接摺接部１５９が当接した弾接部２０３の面に垂直な方向）を可動接点７１側に傾けることができる（もし弾接部２０３の部分を突出形状にしていないと、前記弾接部２０３の押圧方向は矢印Ｃ方向よりももっと立設部５４側の矢印Ｄ方向を向く）。このため固定接点４５に対して可動接点７１を押し付ける力がより強くなり、これによって両接点４５，７１間の接触圧をさらに大きくでき、チャタリング等の接触不良をさらに確実に防止することができる。 Further, according to the swing switch 1-1, the elastic contact portion 203 of the leaf spring 200 has a protruding shape that protrudes toward the movable contact body 70. Therefore, as shown by an arrow C in FIG. The pressing direction of the elastic contact portion 203 by the operation portion 157 when the contact point 71 contacts the fixed contact 45 (the direction perpendicular to the surface of the elastic contact portion 203 with which the elastic contact sliding contact portion 159 contacts) is the movable contact 71 side. (If the elastic contact portion 203 is not formed in a protruding shape, the pressing direction of the elastic contact portion 203 is directed to the arrow D direction on the standing portion 54 side more than the arrow C direction). For this reason, the force which presses the movable contact 71 with respect to the fixed contact 45 becomes stronger, and thereby, the contact pressure between the both contacts 45 and 71 can be further increased, and contact failure such as chattering can be further reliably prevented.

ところでこの揺動スイッチ１−１において、図５に示すように、可動接点７１が固定接点４５に当接した際、両者間に生じるアーク等によって両接点７１，４５間が溶着する場合がある。そしてその溶着力が強いと、操作つまみ１５０を図２に示すように反対方向に揺動しても、板バネ２００の弾発力だけでは可動接点体７０が揺動しにくくなる場合が生じる恐れがある。その際無理に操作つまみ１５０を揺動させると板バネ２００が可動接点体７０の上面に当接するほど変形するので、その耐久性等の点で問題が生じる恐れもある。そこでこの揺動スイッチ１−１では、図６に実線で示す操作つまみ１５０（スイッチオンの状態）を揺動させて行く途中の点線で示す位置において、操作つまみ１５０の押圧部１６１が可動接点体７０のつまみ当接部８１に当接し、可動接点体７０を操作つまみ１５０の回転方向とは逆方向に揺動する力を印加し、つまり操作つまみ１５０の回転力によって直接可動接点体７０を駆動し、前記両接点７１，４５間を引き剥がす。両接点７１，４５間が引き剥がされれば、上述のように板バネ２００の弾発力によって可動接点体７０は図２に示す位置に急速に移動し、スイッチはオフになる。この実施形態では可動接点体７０の上に板バネ２００を設けているため、可動接点体７０の上に前記両接点７１，４５間が熔着した時にこれを引き剥がすための当接部を設けることはできないが、可動接点体７０の側面を利用することで、溶着した時の引き剥がすための機能を持たせることができる。 In the swing switch 1-1, as shown in FIG. 5, when the movable contact 71 comes into contact with the fixed contact 45, the contacts 71 and 45 may be welded due to an arc or the like generated between them. If the welding force is strong, there is a possibility that even if the operation knob 150 is swung in the opposite direction as shown in FIG. There is. At this time, if the operation knob 150 is forcibly swung, the leaf spring 200 is deformed as it comes into contact with the upper surface of the movable contact body 70, which may cause a problem in terms of durability. Therefore, in the swing switch 1-1, the pressing portion 161 of the operation knob 150 is moved to the movable contact body at the position indicated by the dotted line in the middle of swinging the operation knob 150 (switch-on state) indicated by the solid line in FIG. 70, a contact force is applied to the movable contact body 70 in a direction opposite to the rotation direction of the operation knob 150, that is, the movable contact body 70 is directly driven by the rotation force of the operation knob 150. Then, the contact points 71 and 45 are peeled off. When the contacts 71 and 45 are peeled off, the movable contact body 70 is rapidly moved to the position shown in FIG. 2 by the elastic force of the leaf spring 200 as described above, and the switch is turned off. In this embodiment, since the leaf spring 200 is provided on the movable contact body 70, a contact portion is provided on the movable contact body 70 for peeling off the two contacts 71 and 45 when they are welded. Although it is not possible, by using the side surface of the movable contact body 70, it is possible to provide a function for peeling off when it is welded.

〔第２実施形態〕
図７は本発明の第２実施形態に係る揺動スイッチ１−２の概略断面図（図２と同一部分の断面図）、図８はこの揺動スイッチ１−２に用いる板バネ２００−２の斜視図である。この揺動スイッチ１−２において、前記図１〜図６に示す揺動スイッチ１−１と同一又は相当部分には同一符号を付す（但し各符号には「−２」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６に示す実施形態と同じである。 [Second Embodiment]
FIG. 7 is a schematic cross-sectional view (a cross-sectional view of the same part as FIG. 2) of the swing switch 1-2 according to the second embodiment of the present invention, and FIG. 8 is a leaf spring 200-2 used for the swing switch 1-2. FIG. In this oscillating switch 1-2, the same or corresponding parts as those of the oscillating switch 1-1 shown in FIGS. 1 to 6 are given the same reference numerals (however, each reference numeral is assigned “−2”). Note that matters other than those described below are the same as those in the embodiment shown in FIGS.

この揺動スイッチ１−２において前記揺動スイッチ１−１と相違する点は、板バネ２００−２の弾接部２０３−２の形状のみである。即ちこの板バネ２００−２の中央部分には、可動接点体７０−２に向けて（下方向に向けて）略半円弧状に突出する突出形状の弾接部２０３−２が形成されている。このように弾接部２０３−２を形成すれば、図９に示すように可動接点７１−２が固定接点４５−２に当接した際、矢印Ｅで示すように、操作部１５７−２による弾接部２０３−２の押圧方向（弾接部２０３−２の弾接摺接部１５９−２が当接した面に垂直な方向）を、さらに可動接点７１−２側に傾けることができる。このため固定接点４５−２に対して可動接点７１−２を押し付ける力を強くすることができ、両接点４５−２，７１−２間の接触圧をさらに大きくでき、チャタリング等の接触不良を確実に防止することができる。 The only difference of the swing switch 1-2 from the swing switch 1-1 is the shape of the elastic contact portion 203-2 of the leaf spring 200-2. That is, a projecting elastic contact portion 203-2 projecting in a substantially semicircular arc shape toward the movable contact body 70-2 (downward) is formed in the central portion of the leaf spring 200-2. . If the elastic contact portion 203-2 is formed in this way, when the movable contact 71-2 contacts the fixed contact 45-2 as shown in FIG. The pressing direction of the elastic contact portion 203-2 (the direction perpendicular to the surface with which the elastic contact portion 159-2 of the elastic contact portion 203-2 abuts) can be further inclined to the movable contact 71-2 side. For this reason, the force which presses the movable contact 71-2 with respect to the fixed contact 45-2 can be strengthened, the contact pressure between both the contacts 45-2 and 71-2 can be further increased, and contact failure such as chattering can be reliably ensured. Can be prevented.

〔第３実施形態〕
この実施形態は請求項３に関するものである。図１０は本発明の第３実施形態に係る揺動スイッチ１−３の概略断面図（図５と同一部分の断面図）、図１１はこの揺動スイッチ１−３に用いる板バネ２００−３及び可動接点体７０−３の斜視図、図１２は板バネ２００−３を下側から見た斜視図である。この揺動スイッチ１−３において、前記図１〜図６に示す揺動スイッチ１−１と同一又は相当部分には同一符号を付す（但し各符号には「−３」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６に示す実施形態と同じである。この揺動スイッチ１−３において前記揺動スイッチ１−１と相違する点は、板バネ２００−３と可動接点体７０−３の形状のみである。 [Third Embodiment]
This embodiment relates to claim 3. FIG. 10 is a schematic cross-sectional view of the swing switch 1-3 according to the third embodiment of the present invention (a cross-sectional view of the same part as FIG. 5), and FIG. 11 is a leaf spring 200-3 used for the swing switch 1-3. And the perspective view of the movable contact body 70-3, FIG. 12 is the perspective view which looked at the leaf | plate spring 200-3 from the lower side. In this rocking switch 1-3, the same or corresponding parts as those of the rocking switch 1-1 shown in FIGS. Note that matters other than those described below are the same as those in the embodiment shown in FIGS. The only difference of the swing switch 1-3 from the swing switch 1-1 is the shape of the leaf spring 200-3 and the movable contact body 70-3.

すなわちこの板バネ２００−３においては、帯状で略平板直線状に形成した弾性金属板の中央の弾接部２０３−３の両側部分を可動接点体７０−３側（下側）に向けて略円弧状に折り返すように湾曲させ、その両端中央に小突起状の突起を突設してなる係止部２０１−３を設け、これら係止部２０１−３を可動接点体７０−３側（下側）に向けて略直角に折り曲げて構成されている。弾接部２０３−３の部分は下方向に緩やかに湾曲する湾曲面となっている。 In other words, in the leaf spring 200-3, both side portions of the elastic contact portion 203-3 at the center of the elastic metal plate formed in a strip shape and in a substantially flat plate shape are substantially directed toward the movable contact body 70-3 side (lower side). A locking portion 201-3 is formed by bending the arc so as to be folded back and projecting a small protrusion at the center of both ends, and these locking portions 201-3 are arranged on the movable contact body 70-3 side (lower side). Side) and bent at a substantially right angle. The elastic contact portion 203-3 has a curved surface that gently curves downward.

一方可動接点体７０−３は、略帯状で平板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７１−３を取り付けている。また長手方向に沿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７３−３を形成し、一対の係止部７３−３間の部分を軸支部７５−３としている。可動接点体７０−３の軸支部７５−３を挟んだその両側には、前記板バネ２００−３の一対の係止部２０１−３をそれぞれ挿入・係止する略矩形状の貫通孔からなる板バネ係止部７７−３が形成されている。また可動接点体７０−３の可動接点７１−３から離れた側の端部は下方向に折り曲げられて当接部７８−３が形成されている。また当接部７８−３の両側辺からは突出部７９−３が突出して設けられており、これら突出部７９−３の軸支部７５−３側の辺をつまみ当接部８１−３としている。 On the other hand, the movable contact body 70-3 is formed of a substantially strip-like flat plate-shaped metal plate, and a substantially disk-shaped movable contact 71-3 is attached to the lower surface near one end thereof. In addition, a locking portion 73-3 is formed in a substantially center of each of the pair of side edges along the longitudinal direction, and a portion between the pair of locking portions 73-3 is formed as a shaft support portion 75-3. . On both sides of the shaft support portion 75-3 of the movable contact body 70-3, there are substantially rectangular through-holes for inserting and locking the pair of locking portions 201-3 of the leaf spring 200-3. A leaf spring locking portion 77-3 is formed. The end of the movable contact body 70-3 on the side away from the movable contact 71-3 is bent downward to form an abutting portion 78-3. Further, projecting portions 79-3 are provided so as to project from both sides of the abutting portion 78-3, and the side on the shaft support portion 75-3 side of these projecting portions 79-3 is used as a knob abutting portion 81-3. .

図１０は操作つまみ１５０−３が一方の側に揺動しきって可動接点７１−３が固定接点４５−３に当接してスイッチがオン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１５０−３の右側の当接部１６３−３がケース１０−３のストッパ部２１−３に当接し、操作つまみ１５０−３の操作部１５７−３の弾接摺接部１５９−３が板バネ２００−３の弾接部２０３−３の中央よりも可動接点７１−３側の部分を押圧（弾接）して板バネ２００−３を下方向に撓め、これによって可動接点体７０−３の可動接点７１−３が固定接点体４０−３の固定接点４５−３に弾接し、固定接点体４０−３と可動接点体支持体５０−３間、つまり両端子４３−３，５３−３間がオンになって安定している状態である。 FIG. 10 shows a state in which the operation knob 150-3 is fully swung to one side, the movable contact 71-3 is in contact with the fixed contact 45-3, and the switch is turned on to be stable. In the state shown in the figure, the right contact portion 163-3 of the operation knob 150-3 contacts the stopper portion 21-3 of the case 10-3, and the operation portion 157-3 of the operation knob 150-3 is elastically contacted. The sliding contact portion 159-3 presses (elastically contacts) the portion on the movable contact 71-3 side from the center of the elastic contact portion 203-3 of the leaf spring 200-3 to bend the leaf spring 200-3 downward. Thereby, the movable contact 71-3 of the movable contact body 70-3 is elastically contacted with the fixed contact 45-3 of the fixed contact body 40-3, that is, between the fixed contact body 40-3 and the movable contact body support 50-3, that is, The state between both terminals 43-3 and 53-3 is on and stable.

次に操作つまみ１５０−３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１０に示す矢印Ｅ方向に）押圧すると、操作つまみ１５０−３の操作部１５７−３の弾接摺接部１５９−３が板バネ２００−３の弾接部２０３−３の上面を押圧して板バネ２００−３を撓ませながら可動接点７１−３から離れる側に向けて移動（摺動）を始める。そして弾接摺接部１５９−３が弾接部２０３−３の中央付近を通過した際に、可動接点体７０−３は軸支部７５−３の部分を揺動軸として可動接点７１−３側が上昇するように揺動を始め、湾曲している板バネ２００−３の弾発力によって可動接点体７０−３は急速に揺動して瞬時に可動接点７１−３が固定接点４５−３から離れ、固定接点体４０−３と可動接点体支持体５０−３間、つまり両端子４３−３，５３−３間がオフする。このとき操作つまみ１５０−３は他方の側に揺動しきって操作つまみ１５０−３の左側の当接部１６３−３がケース１０−３のストッパ部２１−３に当接し、可動接点体７０−３の当接部７８−３がケース１０−３底面に当接して安定する。このとき操作つまみ１５０−３の操作部１５７−３の弾接摺接部１５９−３が板バネ２００−３の弾接部２０３−３の中央よりも可動接点７１−３から離れた側の部分を押圧（弾接）して板バネ２００−３を下方向に撓め、これによって可動接点体７０−３はこの位置に安定して停止する。 Next, when the upper surface of the operation knob 150-3 that is lifted upward is pressed in the direction in which the operation knob 150-3 is pushed in (in the direction of arrow E shown in FIG. 10), the sliding contact of the operation portion 157-3 of the operation knob 150-3 is performed. The portion 159-3 starts moving (sliding) toward the side away from the movable contact 71-3 while pressing the upper surface of the elastic contact portion 203-3 of the leaf spring 200-3 to bend the leaf spring 200-3. . When the elastic contact portion 159-3 passes through the vicinity of the center of the elastic contact portion 203-3, the movable contact body 70-3 has the portion of the pivot support portion 75-3 as the swing axis and the movable contact 71-3 side is The movable contact body 70-3 is swung rapidly by the elastic force of the curved leaf spring 200-3, and the movable contact 71-3 is instantaneously moved from the fixed contact 45-3. The fixed contact body 40-3 and the movable contact body support body 50-3, that is, the terminals 43-3 and 53-3 are turned off. At this time, the operation knob 150-3 fully swings to the other side, the left contact portion 163-3 of the operation knob 150-3 contacts the stopper portion 21-3 of the case 10-3, and the movable contact body 70- 3 is in contact with the bottom surface of the case 10-3 and is stabilized. At this time, the elastic contact portion 159-3 of the operation portion 157-3 of the operation knob 150-3 is a portion farther from the movable contact 71-3 than the center of the elastic contact portion 203-3 of the leaf spring 200-3. Is pressed (elastic contact) to bend the leaf spring 200-3 downward, whereby the movable contact body 70-3 is stably stopped at this position.

そしてこの揺動スイッチ１−３においても、上述のように可動接点７１−３側が下降している途中において、可動接点体７０−３は常に板バネ２００−３によって可動接点体支持体５０−３の立設部５４−３（その上辺５５−３）に押し付けられる。つまり可動接点７１−３が固定接点４５−３にオンする際に可動接点体７０−３が立設部５４−３の上辺５５−３上でバウンシングしようとしても、板バネ２００−３の弾発力によって前記バウンシングは防止され、これによって可動接点体支持体５０−３と可動接点体７０−３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、揺動スイッチ１−３の長寿命化が図れる。同時に板バネ２００−３の弾発力によって固定接点４５−３に当接した可動接点７１−３を固定接点４５−３に押し付けるので、両接点４５−３，７１−３間の接触圧を大きくでき、チャタリング等の接触不良も確実に防止できる。なおオフ時の可動接点体７０−３の上辺５５−３上でのバウンシングも防止できる。また板バネ２００−３は簡単な構造であり、且つ可動接点体７０−３の長さとほぼ同じ程度までの長さに形成できるので、十分な弾発力が簡単に得られるばかりか、十分な耐久性が得られる。また板バネ２００−３は可動接点体７０−３の上部に取り付けられるので、操作つまみ１５０−３の揺動軸Ｌに沿う方向の厚みの薄型化が図れる。 Also in the swing switch 1-3, the movable contact body 70-3 is always moved by the leaf spring 200-3 while the movable contact 71-3 is being lowered as described above. Is pressed against the upright portion 54-3 (the upper side 55-3). That is, when the movable contact 71-3 is turned on to the fixed contact 45-3, even if the movable contact 70-3 attempts to bounce on the upper side 55-3 of the standing portion 54-3, the elastic spring of the leaf spring 200-3 is generated. The bouncing is prevented by the force, so that the electrical connection between the movable contact body support 50-3 and the movable contact body 70-3 can be reliably ensured, and the generation of arc can be surely prevented. 3 can be extended in service life. At the same time, the movable contact 71-3 that is in contact with the fixed contact 45-3 is pressed against the fixed contact 45-3 by the elastic force of the leaf spring 200-3, so that the contact pressure between both the contacts 45-3 and 71-3 is increased. In addition, poor contact such as chattering can be reliably prevented. In addition, bouncing on the upper side 55-3 of the movable contact body 70-3 at the time of OFF can also be prevented. Further, since the leaf spring 200-3 has a simple structure and can be formed to a length almost equal to the length of the movable contact body 70-3, not only a sufficient elastic force can be easily obtained, but also a sufficient Durability is obtained. Further, since the leaf spring 200-3 is attached to the upper portion of the movable contact body 70-3, the thickness in the direction along the swing axis L of the operation knob 150-3 can be reduced.

特にこの揺動スイッチ１−３によれば、板バネ２００−３の形状からその弾発力を前記板バネ２００，２００−２に比べてさらに強くできるので、可動接点体７０−３を可動接点体支持体５０−３の立設部５４−３に押し付ける力と、可動接点７１−３を固定接点４５−３に押し付ける弾接力の両者を何れもより強くすることができる。従って可動接点体７０−３は常に立設部５４−３に強く押し付けられて可動接点体７０−３と可動接点体支持体５０−３間の電気的接続を常に確実に維持でき、同時に固定接点４５−３に対する可動接点７１−３の押付力を強くできて両接点４５−３，７１−３間の接触不良を確実に防止できる。 In particular, according to the swing switch 1-3, the elastic force can be further increased from the shape of the leaf spring 200-3 as compared with the leaf springs 200 and 200-2. Both the force pressing against the standing portion 54-3 of the body support 50-3 and the elastic contact force pressing the movable contact 71-3 against the fixed contact 45-3 can be made stronger. Therefore, the movable contact body 70-3 is always strongly pressed against the standing portion 54-3, so that the electrical connection between the movable contact body 70-3 and the movable contact body support body 50-3 can always be maintained reliably, and at the same time, the fixed contact. The pressing force of the movable contact 71-3 against 45-3 can be increased, and the contact failure between both the contacts 45-3 and 71-3 can be reliably prevented.

なおこの揺動スイッチ１−３においても、前記揺動スイッチ１−１，１−２と同様に、アーク等によって両接点７１−３，４５−３間が溶着した場合に、操作つまみ１５０−３の押圧部１６１−３が可動接点体７０−３のつまみ当接部８１−３に当接・押圧して前記両接点７１−３，４５−３間を引き剥がす。 In the swing switch 1-3, as in the case of the swing switches 1-1 and 1-2, when the contacts 71-3 and 45-3 are welded by an arc or the like, the operation knob 150-3 is used. The pressing portion 161-3 contacts and presses the knob contact portion 81-3 of the movable contact body 70-3 to peel off the contact points 71-3 and 45-3.

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。例えば板バネの形状は上記各例の形状に限定されず、種々の変形が可能であり、要は両端が可動接点体の軸支部を挟んだ両側に取り付けられることでその中間部分を操作つまみの操作部に弾接させる弾接部としてなる板バネであれば、どのような形状であっても良い。可動接点体に向けて突出する板バネの弾接部の突出形状もＶ字状，Ｕ字状に限定されず、要は可動接点が固定接点に当接した際の操作部による弾接部の押圧方向を可動接点側に傾ける形状であれば、他の各種形状に形成しても良い。また第１，第２実施形態では板バネ２００全体の形状を可動接点体７０の軸支部７５を挟んで長手方向にほぼ直線状に形成しているが、板バネ２００全体の長手方向の形状を上方に向けて湾曲させる、もしくは下方に向けて湾曲させる形状としても良い。 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, the shape of the leaf spring is not limited to the shape of each of the above examples, and various modifications are possible. In short, both ends are attached to both sides sandwiching the shaft support portion of the movable contact body, so that the middle portion of the operation knob is Any shape may be used as long as it is a leaf spring that serves as an elastic contact portion to be brought into elastic contact with the operation portion. The protruding shape of the elastic contact portion of the leaf spring protruding toward the movable contact body is not limited to a V-shape or U-shape. In short, the elastic contact portion of the operation portion when the movable contact comes into contact with the fixed contact is important. As long as the pressing direction is inclined toward the movable contact, it may be formed in various other shapes. In the first and second embodiments, the overall shape of the leaf spring 200 is formed in a substantially linear shape in the longitudinal direction with the shaft support portion 75 of the movable contact body 70 interposed therebetween. The shape may be curved upward or curved downward.

１−１，２，３揺動スイッチ
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
７０可動接点体
７１可動接点
７５軸支部
１５０操作つまみ
１５７操作部
２００板バネ
２０３弾接部 1-1, 2, 3 Oscillating switch 10 Case 11 Contact housing part 40 Fixed contact body 45 Fixed contact 50 Moving contact body support body 54 Standing part 70 Movable contact body 71 Movable contact 75 Shaft support part 150 Operation knob 157 Operation part 200 Leaf spring 203 Elastic contact part

Claims

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立設部に揺動自在に軸支される軸支部を設け且つ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揺動することで前記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、を具備する揺動スイッチにおいて、
前記可動接点体と前記操作つまみの操作部の間に、その両端が可動接点体の軸支部を挟んだ両側に取り付けられることでその中間部分を前記操作部に弾接させる弾接部としてなる板バネを設置し、この板バネの弾接部に前記操作つまみの操作部を弾接して摺動することで可動接点体の軸支部を立設部に押し付けながら揺動させて可動接点と固定接点間をオンオフし、
さらに前記可動接点体の前記可動接点を設けた反対の端部側に、可動接点体の長手方向に沿う両側辺から突出する突出部を設け、これら突出部の軸支部側の辺をつまみ当接部とし、
一方、前記操作つまみには、前記可動接点体に設けたつまみ当接部に当接して直接可動接点体を駆動することで、固定接点に溶着した可動接点を引き剥がす押圧部を設けたことを特徴とする揺動スイッチ。 A case having a contact housing portion;
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 that is provided with a shaft support portion that is pivotally supported by the standing portion of the movable contact body support body, and that is movable toward and away from the fixed contact provided on the fixed contact body;
In an oscillation switch comprising an operation knob installed on an upper portion of the movable contact body and having an operation portion for swinging the movable contact body by swinging,
A plate that serves as an elastic contact portion for elastically contacting an intermediate portion of the movable contact body between the movable contact body and the operation portion of the operation knob. A spring is installed, and the operating part of the operation knob is elastically contacted with the elastic contact part of the leaf spring and slid while pressing the shaft support part of the movable contact body against the standing part to move the movable contact and the fixed contact. Turn on and off,
Furthermore, on the opposite end side of the movable contact body where the movable contact is provided, there are provided projecting portions that project from both sides along the longitudinal direction of the movable contact body, and the side of the projecting portion on the side of the shaft support is in contact with the knob. And
On the other hand, the operation knob is provided with a pressing portion that directly contacts the knob contact portion provided on the movable contact body and drives the movable contact body to peel off the movable contact welded to the fixed contact. Features a swing switch.

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立設部に揺動自在に軸支される軸支部を設け且つ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揺動することで前記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、を具備する揺動スイッチにおいて、
前記可動接点体と前記操作つまみの操作部の間に、その両端が可動接点体の軸支部を挟んだ両側に取り付けられることでその中間部分を前記操作部に弾接させる弾接部としてなる板バネを設置し、この板バネの弾接部に前記操作つまみの操作部を弾接して摺動することで可動接点体の軸支部を立設部に押し付けながら揺動させて可動接点と固定接点間をオンオフし、
さらに前記操作つまみの対向する一対の外周側面の下端部から下方に延ばすように設けた側板部の一方の側辺を押圧部とし、
この押圧部を、前記可動接点体に設けたつまみ当接部に当接して直接可動接点体を駆動させることで、固定接点に溶着した可動接点を引き剥がす構成としたことを特徴とする揺動スイッチ。 A case having a contact housing portion;
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 that is provided with a shaft support portion that is pivotally supported by the standing portion of the movable contact body support body, and that is movable toward and away from the fixed contact provided on the fixed contact body;
In an oscillation switch comprising an operation knob installed on an upper portion of the movable contact body and having an operation portion for swinging the movable contact body by swinging,
A plate that serves as an elastic contact portion for elastically contacting an intermediate portion of the movable contact body between the movable contact body and the operation portion of the operation knob. A spring is installed, and the operating part of the operation knob is elastically contacted with the elastic contact part of the leaf spring and slid while pressing the shaft support part of the movable contact body against the standing part to move the movable contact and the fixed contact. Turn on and off,
Furthermore, one side of the side plate provided so as to extend downward from the lower end of the pair of outer peripheral side surfaces facing the operation knob is a pressing portion,
Swing characterized in that the pressing portion is brought into contact with a knob abutting portion provided on the movable contact body to directly drive the movable contact body to peel off the movable contact welded to the fixed contact. switch.

請求項１に記載の揺動スイッチであって、
前記操作つまみの対向する一対の外周側面の下端部から下方に延ばすように側板部を設け、これら側板部の一方の側辺を前記押圧部としたことを特徴とする揺動スイッチ。 The swing switch according to claim 1 ,
A swing switch characterized in that a side plate portion is provided so as to extend downward from a lower end portion of a pair of outer peripheral side surfaces facing the operation knob, and one side of these side plate portions is used as the pressing portion.