201112289 六、發明說明： 【發明所屬之技術領域】 本發明是關於可作爲用來操作各種小型電子機器之開 關來使用的按鈕式開關。 【先前技術】 作爲以往的按鈕式開關的例子，下述專利文獻1所揭 示的按壓式開關爲眾所皆知。此開關之結構爲具備有：固 定於基板之固定接點；設置於固定接點上之可動接點；載 置於可動接點上之圓錐形彈性體；以及固定於彈性體上之 操作體。又，可動接點是以金屬薄板成形，在圓形環狀的 外周部的中央設有舌片部，具有朝上方切起此舌片部之形 狀。又，當按壓操作體時，彈性體的圓錐形部彈性變形， 彈性體的垂下部將可動接點的舌片部朝下方按壓，使得舌 片部與固定接點接觸，切換開關。 由於這種的按壓式開關之單價便宜，故降低製造成本 一事爲重要課題。因此，減少零件數量、或提升作業效率 極爲重要，但是也必須謀求確保開關操作的穩定性、維持 或提升品質。 [專利文獻1]日本專利第3 8 907 8 9號公報 【發明內容】 [發明所欲解決之課題] 本發明是爲了解決上述課題而開發完成的發明，其目[s] -5 - 201112289 的在於提供比起以往的按壓式開關，能夠減少零件數量， 且可謀求作業效率提升，並且亦可確保開關操作的穩定性 之按鈕式開關。 [用以解決課題之手段] 爲了達到上述目的，本發明的按鈕式開關，其特徵爲 :具備：具有收納部之殻體；具有固定接點部，以固定接 點部露出於殼體的底部的方式被插入成形固定之固定接點 片；與固定接點片分離並插入成形固定於殻體的底部之可 動接點片；具有可屈伸的圓頂型的裙部和設置於裙部的內 側中央之凸部，並且配置於固定接點片及可動接點片上並 收納於收納部內之橡皮彈簧；以及配置於橡皮彈簧的上方 ，設置成對殻體可自由升降之按鈕部，在可動接點片設有 作爲舌片之彈性舌片’其爲朝上方折彎形成並具有彈性力 ，在其一端部側設有在通常狀態下與固定接點部分離配置 ，並且在開關操作時與固定接點部接觸之可動接點部，當 按壓按鈕部進行開關操作時，橡膠彈簧座屈變形，並且凸 部下降而將可動接點部下壓，使得可動接點部與固定接點 部接觸，一方面，當解除按鈕部的按壓時，彈性舌片及橡 皮彈簧彈性復原，恢復成通常狀態。 在殼體內的底部，設有從外側支承橡皮彈簧之支承壁 ，藉由支承壁限制橡皮彈簧的半徑方向的移動，當進行按 鈕部的按壓時，橡皮彈簧垂直朝上屈曲，該屈曲部被收容 於按鈕部的內側的空隙部爲佳。 -6 - 201112289 [發明效果] 本發明的按鈕式開關，是構成爲可 點片皆插入成形固定於殻體的底部，並 具有作爲舌片之彈性舌片，其爲朝上方 性力，在其一端部側設有在通常狀態下 配置，並且在開關操作時與固定接點部 。因此可達到下述效果，即，藉由如此 成形固定於殼體的底部，可進行穩定的 由將彈性舌片設置成折彎形成於可動接 裝工序，並且亦可減少零件數量，能夠 之效果。 【實施方式】 以下，參照圖面說明關於本發明的; 圖1是本發明的按鈕式開關的全體ΐ 開關的上面圖、（b)爲同開關的正面H 的裏面圖、（d)爲同開關的側面圖、 的A — A線斷面圖、（Ο爲同圖（a)g 圖2是顯示接點片基材之圖，（a )爲平 )的局部放大圖' (c)爲A—A線斷面 線斷面圖。圖3是用來說明將接點片插 的狀態之上面圖。圖4是顯示插入成形 體之圖，（a)爲上面圖、（b)爲正面 動接點片、固定接 且在可動接點片， 折彎形成並具有彈 與固定接點部分離 接觸之可動接點部 將可動接點片插入 開關動作。且，藉 點片，能夠減少組 謀求製造成本降低 ί施形態。 I成圖，（〇爲同 3、 （ c )爲同開關 (e)爲同圖（a) )B — B線斷面圖。 面圖、（b)爲（a 圖、（d )爲 B — B 人成形固定於殻體 固定有接點片的殻 圖、（c )爲（a )， 201112289 的A—A線斷面圖、（d)爲側面圖、（e)爲（a)的B— B 線斷面圖、（g)爲裏面圖。圖5是顯示底蓋之圖，（a) 爲上面圖、（b)爲正面圖、（c)爲側面圖。圖6是顯示 橡皮彈簧之圖，（a)爲上面圖、（b)爲側面圖、（c) 爲（a)的A - A線斷面圖。圖7是顯示按鈕部之圖，（a) 爲上面圖、（b)爲正面圖、（c)爲（a)的A— A線斷面 圖、（d)爲裏面圖、（e)爲側面圖。圖8是用來說明按 鈕式開關的組裝製程之圖。圖9是用來說明按鈕式開關的 動作狀態之斷面圖，（a )爲通常狀態、（b )爲開關動作 狀態。 如圖1所示，此按鈕式開關1是可理想地作爲用來操作 各種電子機器之切換開關來使用，主要是由以固定接點片 2 A及可動接點片2B所形成的接點片2、殻體3、底蓋4、橡 皮彈簧5及按鈕部6所構成，如以下的方式所構成之開關。 即，按鈕式開關1之結構爲具備有：具有收納部31之 殼體3 ;具有固定接點部2 1 A，以固定接點部2 1 A露出於殻 體3的底部32的方式插入成形固定的固定接點片2A;與固 定接點片2A分離，並插入成形固定於殼體3的底部32之可 動接點片2B;具有可屈伸的圓頂型的裙部51、和設置於裙 部51的內側中央的凸部52，並且配置於固定接點片2A及可 動接點片2 B上並收納於收納部3 1內之橡皮彈簧5 ;以及配 置於橡皮彈簧5的上方，設置成對殻體3可自由升降之按鈕 部6。201112289 VI. Description of the Invention: [Technical Field] The present invention relates to a push button switch that can be used as a switch for operating various small electronic machines. [Prior Art] As an example of the conventional push button switch, the push switch disclosed in the following Patent Document 1 is well known. The switch has a structure in which: a fixed contact fixed to the substrate; a movable contact provided on the fixed contact; a conical elastic body placed on the movable contact; and an operating body fixed to the elastic body. Further, the movable contact is formed by a thin metal plate, and a tongue portion is provided at the center of the outer peripheral portion of the circular ring shape, and has a shape in which the tongue portion is cut upward. Further, when the operation body is pressed, the conical portion of the elastic body is elastically deformed, and the lower portion of the elastic body presses the tongue portion of the movable contact downward, so that the tongue portion comes into contact with the fixed contact, and the switch is switched. Since the unit price of such a push switch is inexpensive, it is an important issue to reduce the manufacturing cost. Therefore, it is extremely important to reduce the number of parts or to improve work efficiency, but it is also necessary to ensure the stability, maintenance or quality of the switching operation. [Patent Document 1] Japanese Patent No. 3 8 907 8 9 SUMMARY OF THE INVENTION [Problems to be Solved by the Invention] The present invention has been developed in order to solve the above problems, and its object [s] -5 - 201112289 In addition, it is possible to provide a push button switch that can reduce the number of components compared to the conventional push-type switch, and can improve the work efficiency and ensure the stability of the switching operation. [Means for Solving the Problem] In order to achieve the above object, a push button switch according to the present invention includes: a housing having a housing portion; and a fixed contact portion that is exposed at a bottom portion of the housing with a fixed contact portion The method is inserted into the fixed fixed contact piece; the movable contact piece is separated from the fixed contact piece and inserted into the bottom of the housing; the dome-shaped skirt having the bendable extension is disposed on the inner side of the skirt a convex portion at the center, a rubber spring disposed on the fixed contact piece and the movable contact piece and housed in the accommodating portion; and a button portion disposed above the rubber spring to be freely movable up and down with respect to the housing, at the movable contact The sheet is provided with an elastic tongue as a tongue which is formed to be bent upward and has an elastic force, and is disposed on the one end side thereof in a normal state from the fixed contact portion, and is fixedly connected during the switching operation. When the button portion is pressed and the switching operation is performed, the rubber spring seat is deformed, and the convex portion is lowered to press the movable contact portion to make the movable contact portion and the solid portion When the button portion is pressed, the elastic tongue and the rubber spring are elastically restored to return to the normal state. A support wall for supporting the rubber spring from the outer side is provided at the bottom of the casing, and the movement of the rubber spring in the radial direction is restricted by the support wall. When the push of the button portion is performed, the rubber spring is vertically bent upward, and the buckling portion is received. The gap portion on the inner side of the button portion is preferred. -6 - 201112289 [Effect of the Invention] The push button switch of the present invention is configured such that the clickable sheets are insert-molded and fixed to the bottom of the casing, and have elastic tongues as tongues, which are upward-facing forces, The one end side is provided in a normal state, and is fixed to the contact portion during the switching operation. Therefore, it is possible to achieve the effect that the elastic tongue is formed in a movable manner during the movable attachment process by being formed and fixed to the bottom of the casing, and the number of parts can be reduced. . [Embodiment] Hereinafter, the present invention will be described with reference to the drawings. Fig. 1 is a top view of the entire ΐ switch of the push button switch of the present invention, (b) is an inner view of the front surface H of the same switch, and (d) is the same Side view of the switch, A-A cross-sectional view, (Ο is the same figure (a) g Figure 2 is a view showing the contact piece substrate, (a) is flat) (c) is Sectional view of the section line A-A. Fig. 3 is a top view for explaining a state in which a contact piece is inserted. Figure 4 is a view showing the insert molded body, (a) is the upper view, (b) is the front movable contact piece, is fixedly attached and is in the movable contact piece, is formed by bending and has a separate contact between the elastic and the fixed contact portion. The movable contact portion inserts the movable contact piece into the switch operation. Moreover, by taking a point, it is possible to reduce the number of manufacturing costs and reduce the manufacturing cost. I is a picture, (〇 is the same as 3, (c) is the same switch (e) is the same figure (a)) B-B line sectional view. The surface view, (b) is a (a), (d) is a B-B shape of the shell fixed to the housing fixed contact piece, (c) is (a), 201112289 A-A line sectional view (d) is a side view, (e) is a cross-sectional view of the B-B line of (a), and (g) is an inside view. Figure 5 is a view showing the bottom cover, (a) is the above figure, (b) The front view and (c) are side views. Fig. 6 is a view showing the rubber spring, (a) is a top view, (b) is a side view, and (c) is a cross-sectional view taken along line A-A of (a). Fig. 7 is a view showing a button portion, wherein (a) is a top view, (b) is a front view, (c) is a cross-sectional view taken along line A-A of (a), (d) is an inner view, and (e) is Fig. 8 is a view for explaining an assembly process of the push button switch, and Fig. 9 is a cross-sectional view for explaining an operation state of the push button switch, wherein (a) is a normal state and (b) is a switch operation state. As shown in FIG. 1, the push button switch 1 is ideally used as a switch for operating various electronic devices, mainly by a contact piece formed by a fixed contact piece 2 A and a movable contact piece 2B. 2, the housing 3, the bottom cover 4, the rubber spring 5 and the button The switch is configured as follows: The push button switch 1 is configured to include a housing 3 having a housing portion 31; and has a fixed contact portion 2 1 A to fix the contact portion 2 1 A is inserted into the fixed fixed contact piece 2A in a manner of being exposed at the bottom 32 of the casing 3; separated from the fixed contact piece 2A, and inserted into the movable contact piece 2B formed and fixed to the bottom 32 of the casing 3; a dome-shaped skirt portion 51 and a convex portion 52 provided at the inner center of the skirt portion 51, and a rubber spring disposed on the fixed contact piece 2A and the movable contact piece 2B and housed in the housing portion 31 5; and disposed above the rubber spring 5, the button portion 6 that can freely move up and down the housing 3 is provided.
又，在可動接點片2B ’具有作爲舌片之彈性舌片20B 201112289 ，其爲朝上方折彎形成並具有彈性力者，在其一端部側設 有在通常狀態時與固定接點部2 1 A分離配置，並且在開關 操作時與固定接點部21 A接觸之可動接點部21B，當按壓按 鈕部6進行開關操作時，橡皮彈簧5產生座屈變形並且凸部 52下降而將可動接點部21B下壓，使得可動接點部21B與固 定接點部21 A接觸，一方面，當解除按鈕部6的按壓時，彈 性舌片20B及橡皮彈簧5彈性復原，恢復成通常狀態。 平常時’如圖9(a)所示，按鈕部6自殼體3突出，一 對的固定端子20、20間未導通，按鈕式開關1成OFF狀態。 另外’如圖9(b)所示，當將按鈕部6壓入時，一對的固 定端子2 0、2 0間導通，按鈕式開關開關1切換成on，當解 除該力時，按鈕部6回到原來的位置，固定端子20、20間 被切斷’而按鈕式開關1被切換成OFF。又，因該按鈕式開 關1是使用由橡膠所構成的橡皮彈簧5，所以，比起具有金 屬製變形構件之開關’其操作行程長、並且當進行操作時 ，藉由橡膠的彈力可獲得軟反饋感觸。以下，詳細地說明 各構件之構造。 圖2是顯示從由具導電性的材料例如由銅等所構成之 薄板金屬板進行了沖壓加工後的狀態之接點片基材2 〇 〇， 在此接點片基材200中含有切割分離前的狀態之接點片2。 即’如圖2 ( a )所示’接點片基材2〇〇是由並行的2條線部 201、201、複數個接點片2、2.....及將接點片2與 線部201分別連接之連接部2〇2、203所構成，如後述，對 殻體3之插入成形後，藉由切斷連接部2〇2、2〇2、203、 -9 - 201112289 203，插入成形固定於殼體3的底部32。 如圖2 ( b )所示，接點片2是由固定接點片2A與可動 接點片2B所構成，固定接點片2A是藉由位在其左右之連接 部202、202來與線部201、201連接，同樣地，可動接點片 2B也藉由連接部203、203來與線部201、20〗連接，但是， 固定接點片2A及可動接點片2B彼此是分離而未連接。 固定接點片2A是由用來與電氣機器的電路圖案連接、 且藉由折彎加工所形成的固定端子2〇、和作爲與可動接點 片2B的可動接點部21B之接點部也就是被壓花加工成半球 狀之固定接點部2 1 A、2 1 A所形成的，形成有定位用的圓 形孔22、22。可動接點片2B是具有與上述相同的固定端子 20及定位用的圓形孔22、22，並且設有180度折彎形成並 以其一端部側的可動接點部2 1 B位於固定接點部2 1 A、2 1 A 上方的方式朝斜上方翹起構成的彈性舌片20B。 由如此所形成的固定接點片2A及可動接點片2B所構成 之接點片2，在如圖3所示的形態下，藉由插入成形，來插 入成形固定於殼體3的底部32。從該狀態切斷連接部202、 2 02、203、2 03，將該切斷的部分作爲固定端子2〇加以折 彎形成之狀態是如圖4所示之接點片2被插入成形固定於底 部32的殼體3。 殼體3是藉由將具絕緣性的材料例如聚醯胺等的合成 樹脂進行射出成形，來形成爲四方被外壁部3 4所包圍的箱 型，在外壁部34的內壁面設有一對的卡止爪33、33 ’用以 防止按鈕部6脫落。在外壁部34的內側設有用來收納橡皮 -10- 201112289 彈簧5之收納部3 1。在收納部3 1，具有朝向底部3 2中央方 向的圓弧面35 A之支承壁35是4個均等地配置於四方而立設 於底部32，藉由4個支承壁35、35' 35、35形成凹部36。 又，在外壁部34的外壁面’突設有一對的卡止爪33、33， 用以防止底蓋4脫離。 底蓋4是藉由將具絕緣性的材料例如聚醯胺等的合成 樹脂進行射出成形來形成的’如圖5所示，其由底板4 1、 和立設於底板41的兩端部之卡止部42、42所構成，用來在 殼體3的底部32覆蓋固定接點片2A及可動接點片2B以防止 其露出之構件。藉由卡止部42、42卡止於殼體3的卡止爪 33、33，底蓋4被安裝於殼體3。 橡皮彈簧5是如圖6所示，以具彈性的材料例如矽橡膠 等所構成，由形成爲圓柱狀的按壓部50、連接於其下方且 內部具空洞之成形爲圓頂型的裙部51、以及設置於裙部51 內部中之按壓部50的下方的凸部52所構成。橡皮彈簧5是 構成爲當按壓按壓部50的頂面時，裙部51座屈變形而形成 開關ON狀態，而當解除按壓時，藉由橡膠的彈力恢復至 原來的圓頂型，形成開關OFF狀態。在開關ON狀態，凸部 52是從上方按壓彈性舌片20B。 按鈕部6是形成爲箱型，藉由將具絕緣性之材料例如 聚醯胺等的合成樹脂進行射出成形所形成，具有從外部進 行按壓操作的部分之頂板部60、以及立設於頂板部60的四 方之縱壁部61，在縱壁部61的外壁面突設有一對的卡止爪 62、62，用以防止從殻體3脫離。又，如圖7 ( c )所示，r -11 - 201112289 在頂板部60的裏面中央形成有圓環狀的冠部63，藉由將橡 皮彈簧5的按壓部50嵌入至此冠部63，如圖1 ( e )所示， 橡皮彈簧5被固定於按鈕部6的裏面中央。又，在冠部63的 外側，形成有用來收容橡皮彈簧5的屈曲部之空隙部64。 其次，參照圖8，說明關於如此所構成的各零件之組 裝過程。 如圖4所示，對在底部32插入成形固定有固定接點片 2A及可動接點片2B之殻體3，藉由使卡止爪33、33與卡止 部42、42卡止來從下方安裝底蓋4。接著，將橡皮彈簧5收 納至殻體3的收納部3 1。此時，橡皮彈簧5的裙部5 1的下端 部以被收容於受到4個支承壁35、35、35、35包圍形成的 凹部36內的方式載置於殻體3的底部32。自該狀態，從橡 皮彈簧5上方覆蓋按鈕部6。此時，橡皮彈簧5的按壓部50 嵌入至按鈕部6的冠部63，並且按鈕部6的卡止部62、62與 殼體3的卡止爪33、33卡止，按鈕部6對殻體3可自由升降 地被安裝。 本發明的按鈕式開關1是如以上方式所構成，以下， 說明關於其動作。圖9(a)是顯示未對按鈕式開關1施加 外力之無負荷時的狀態。在此無負荷時，橡皮彈簧5會延 伸裙部51而立起於底部32上，藉由橡皮彈簧5的彈推力’ 形成按鈕部6的頂板部6 0從殼體3突出的狀態。此時’由於 彈性舌片20B的可動接點部21B從固定接點片2A的固定接 點部21A、21A分離，故，左右的固定端子20、20彼此未 導通，開關爲OFF狀態。 -12- 201112289 相對於此，圖9(b)是顯示對按鈕式開關1施加外力 而按壓時之狀態。如此，當壓下按鈕部6的頂板部60時， 對被固定於頂板部60的裏面之橡皮彈簧5，施加垂直向下 之力，橡皮彈簧5的裙部51產生座屈變形。此時，因橡皮 彈簧5的裙部51，被殻體3內的支承壁35、35、35、35限制 半徑方向的移動，所以，僅裙部51的傾斜部分屈曲成垂直 向上膨脹，該屈曲部剛好被收納於按鈕部6的內側的空隙 部64。又，當橡皮彈簧5的裙部51產生座屈變形時，按壓 部50向下沈，使得彈性舌片20B的可動接點部2IB與固定接 點片2A的固定接點部21A、21A接觸。藉此，固定端子20 ' 20間藉由彈性舌片20B成爲導通狀態，開關被切換成on 狀態。 且’當外力解除時，橡皮彈簧5以本身的彈力，恢復 到原來的圓頂型，並且彈性舌片20B也恢復到原來的狀態 ’按鈕部6上升，而返回到如圖9 (a)所示的原來位置。 藉此’彈性舌片20B的可動接點部2 1 B從固定接點片2 A的 固定接點部21A、21A分離，左右之固定端子20、20彼此 的導通被切斷，開關被切換成OFF狀態。 如此’若依據本發明的按鈕式開關1，可動接點片2B '固定接點片2A皆插入成形固定於殼體3的底部3〗，並且 在可動接點片2B具有作爲舌片之彈性舌片20B，其爲朝上 方折彎形成並具有彈性力者，在其一端部側設有在通常狀 態時與固定接點部2 1 A、2 1 A分離配置並且在開關操作時 時與固定接點部2 1 A、2 1 A接觸之可動接點部2 1 B。如此， -13- 201112289 藉由將可動接點片2B插入成形固定於殼體3的底部31，能 夠進行穩定的開關動作。且，藉由將彈性舌片2 OB折彎形 成並設置於可動接點片2B，能夠削減組裝工序，並且亦可 削減零件數量，能夠謀求製造成本降低。 【圖式簡單說明】 圖1是本發明的按鈕式開關的全體構成圖，（a)爲同I 開關的上面圖、（b)爲同開關的正面圖、（c)爲同開關 的裏面圖、（d)爲同開關的側面圖、（e)爲同圖（a) 的A — A線斷面圖' (f)爲同圖（a)的B— B線斷面圖° 圖2是顯示接點片基材的圖，（a)爲平面圖、（b) 爲（a)的局部放大圖、（c)爲A— A線斷面圖、（d)爲 B — B線斷面圖。 圖3是用來說明將接點片插入成形固定於殻體的狀# 之上面圖。 圖4是顯示插入成形固定有接點片的殼體之圖’ （a) 爲上面圖、（b)爲正面圖、（c)爲（a)的A_A線斷面 圖、（d)爲側面圖、（e)爲（a)的線斷面圖、 )爲裏面圖。 圖5是顯示底蓋之圖，（a)爲上面圖、（b)爲1 圖、（c )爲側面圖。 、 爲 圖6是顯示橡皮彈簧之圖，（a)爲上面圖、（b) 側面圖、（c)爲（a)的A — A線斷面圖。 __ 圖7是顯示按鈕部之圖，（a)爲上面圖、（b)爲 -14- 201112289 面圖、（C)爲（a)的A_ A線斷面圖' (d)爲裏面圖、 (e )爲側面圖。 圖8是用來說明按鈕式開關的組裝製程之圖。 圖9是用來說明按鈕式開關的動作狀態之斷面圖，（a )爲通常狀態、（b )爲開關動作狀態。 【主要元件符號說明】 1 :按鈕式開關 200 :接點片基材 2 0 1 :線部 2 :接點片 2A :固定接點片 20A :固定端子 2 1 A :固定接點部 2B :可動接點片 2 0 B :彈性舌片 2 1 B :可動接點部 3 :殼體 3 1 :收納部 32 :底部 4 :底蓋 5 :橡皮彈簧 51 :裙部 52 :凸部 -15- 201112289 6 :按鈕部 61 :縱壁部 62 :卡止爪 63 :冠部 64 :空隙部Further, the movable contact piece 2B' has an elastic tongue 20B 201112289 as a tongue which is formed to be bent upward and has an elastic force, and is provided on the one end side in the normal state and the fixed contact portion 2 1 A separate configuration, and the movable contact portion 21B that is in contact with the fixed contact portion 21 A during the switching operation, when the button portion 6 is pressed to perform a switching operation, the rubber spring 5 is deformed and the convex portion 52 is lowered to be movable The contact portion 21B is pressed down so that the movable contact portion 21B comes into contact with the fixed contact portion 21 A. On the other hand, when the pressing of the button portion 6 is released, the elastic tongue 20B and the rubber spring 5 are elastically restored to return to the normal state. Normally, as shown in Fig. 9(a), the button portion 6 protrudes from the casing 3, and the pair of fixed terminals 20 and 20 are not turned on, and the push button switch 1 is turned OFF. Further, as shown in FIG. 9(b), when the button portion 6 is pushed in, the pair of fixed terminals 20 and 20 are electrically connected, and the push button switch 1 is switched to on. When the force is released, the button portion is turned on. 6 returns to the original position, the fixed terminals 20, 20 are cut off' and the push button switch 1 is switched OFF. Further, since the push button switch 1 uses the rubber spring 5 composed of rubber, the operation stroke is long compared to the switch having the metal deformation member, and when operating, the rubber can be softened by the elastic force of the rubber. Feedback feelings. Hereinafter, the structure of each member will be described in detail. Fig. 2 is a view showing a contact sheet substrate 2 in a state in which a sheet metal plate made of a conductive material such as copper or the like is subjected to press working, and the contact sheet substrate 200 contains a cutting separation. The contact piece 2 of the previous state. That is, as shown in Fig. 2 (a), the contact piece substrate 2 is composed of two parallel line portions 201, 201, a plurality of contact pieces 2, 2.... and a contact piece 2 The connecting portions 2, 2, and 203 are respectively connected to the wire portion 201, and as will be described later, after the inserting and molding of the casing 3, the connecting portions 2, 2, 2, 2, 203, -9 - 201112289 203 are cut. The insert is shaped and fixed to the bottom 32 of the housing 3. As shown in FIG. 2(b), the contact piece 2 is composed of a fixed contact piece 2A and a movable contact piece 2B, and the fixed contact piece 2A is connected to the line by the connecting portions 202 and 202 positioned at the left and right sides thereof. Similarly, the movable contact piece 2B is also connected to the line portions 201 and 20 by the connection portions 203 and 203. However, the fixed contact piece 2A and the movable contact piece 2B are separated from each other. connection. The fixed contact piece 2A is a fixed terminal 2A which is connected to a circuit pattern of an electric device and which is formed by bending, and a contact portion which is a movable contact portion 21B with the movable contact piece 2B. It is formed by the fixed contact portions 2 1 A and 2 1 A which are embossed into a hemispherical shape, and circular holes 22 and 22 for positioning are formed. The movable contact piece 2B is the same as the above-described fixed terminal 20 and the circular holes 22 and 22 for positioning, and is provided with a 180-degree bent shape and the movable contact portion 2 1 B on the one end side thereof is fixedly connected. The elastic tongue 20B formed by tilting upwards in a manner above the point portions 2 1 A and 2 1 A. The contact piece 2 composed of the fixed contact piece 2A and the movable contact piece 2B thus formed is insert-molded and fixed to the bottom portion 32 of the casing 3 by insert molding. . In this state, the connecting portions 202, 02, 203, and 203 are cut, and the cut portion is bent as the fixed terminal 2', and the contact piece 2 is inserted and fixed as shown in FIG. The housing 3 of the bottom 32. The casing 3 is formed by injection molding a synthetic resin such as polyimide, and is formed into a box shape surrounded by the outer wall portion 34, and a pair of the inner wall surface of the outer wall portion 34 is provided. The locking claws 33, 33' serve to prevent the button portion 6 from coming off. A accommodating portion 3 1 for accommodating the rubber -10- 201112289 spring 5 is provided inside the outer wall portion 34. In the accommodating portion 3 1, the support wall 35 having the circular arc surface 35A toward the center of the bottom portion 3 2 is arranged four on the four sides and is erected on the bottom portion 32, and the four support walls 35, 35' 35, 35 A recess 36 is formed. Further, a pair of locking claws 33, 33 are protruded from the outer wall surface ' of the outer wall portion 34 to prevent the bottom cover 4 from coming off. The bottom cover 4 is formed by injection molding a synthetic resin such as polyamine or the like, as shown in FIG. 5, and is provided by the bottom plate 4 1 and the both ends of the bottom plate 41. The locking portions 42, 42 are formed to cover the member 32 for fixing the contact piece 2A and the movable contact piece 2B at the bottom portion 32 of the casing 3 to prevent the member from being exposed. The bottom cover 4 is attached to the casing 3 by the locking portions 42, 42 being locked to the locking claws 33, 33 of the casing 3. As shown in Fig. 6, the rubber spring 5 is made of an elastic material such as ruthenium rubber or the like, and is formed into a cylindrical pressing portion 50, and a skirt portion 51 formed into a dome shape and connected to the lower portion and having a cavity therein. And a convex portion 52 provided below the pressing portion 50 in the inside of the skirt portion 51. The rubber spring 5 is configured such that when the top surface of the pressing portion 50 is pressed, the skirt portion 51 is deformed to form a switch ON state, and when the pressing is released, the elastic force of the rubber is restored to the original dome shape to form a switch OFF. status. In the ON state of the switch, the convex portion 52 presses the elastic tongue 20B from above. The button portion 6 is formed in a box shape, and is formed by injection molding a synthetic resin such as polyamide or the like, and has a top plate portion 60 that is pressed from the outside and a top plate portion that is erected on the top plate portion. In the four vertical wall portions 61 of the 60, a pair of locking claws 62, 62 are protruded from the outer wall surface of the vertical wall portion 61 to prevent detachment from the casing 3. Further, as shown in Fig. 7(c), r -11 - 201112289 is formed with an annular crown portion 63 at the center of the inner surface of the top plate portion 60, and the pressing portion 50 of the rubber spring 5 is fitted into the crown portion 63, such as As shown in Fig. 1(e), the rubber spring 5 is fixed to the center of the inside of the button portion 6. Further, on the outer side of the crown portion 63, a gap portion 64 for receiving the bent portion of the rubber spring 5 is formed. Next, the assembly process of the components thus constituted will be described with reference to Fig. 8 . As shown in FIG. 4, the case 3 in which the fixed contact piece 2A and the movable contact piece 2B are inserted and fixed to the bottom portion 32 is locked by the locking claws 33 and 33 and the locking portions 42 and 42. Install the bottom cover 4 below. Next, the rubber spring 5 is received in the housing portion 31 of the casing 3. At this time, the lower end portion of the skirt portion 5 1 of the rubber spring 5 is placed on the bottom portion 32 of the casing 3 so as to be housed in the recess portion 36 surrounded by the four support walls 35, 35, 35, 35. From this state, the button portion 6 is covered from above the rubber spring 5. At this time, the pressing portion 50 of the rubber spring 5 is fitted into the crown portion 63 of the button portion 6, and the locking portions 62, 62 of the button portion 6 are locked with the locking claws 33, 33 of the housing 3, and the button portion 6 is opposed to the case. The body 3 can be installed freely up and down. The push button switch 1 of the present invention is configured as described above, and the operation thereof will be described below. Fig. 9(a) shows a state in which no load is applied to the push button switch 1 without an external force. When there is no load, the rubber spring 5 extends over the skirt portion 51 and stands on the bottom portion 32, and the top plate portion 60 of the button portion 6 protrudes from the casing 3 by the elastic force of the rubber spring 5. At this time, since the movable contact portion 21B of the elastic tongue 20B is separated from the fixed contact portions 21A and 21A of the fixed contact piece 2A, the left and right fixed terminals 20 and 20 are not electrically connected to each other, and the switch is in an OFF state. -12- 201112289 In contrast, Fig. 9(b) shows a state in which an external force is applied to the push button switch 1 and pressed. As described above, when the top plate portion 60 of the button portion 6 is depressed, a vertical downward force is applied to the rubber spring 5 fixed to the inner surface of the top plate portion 60, and the skirt portion 51 of the rubber spring 5 is deformed. At this time, since the skirt portion 51 of the rubber spring 5 is restricted in the radial direction by the support walls 35, 35, 35, 35 in the casing 3, only the inclined portion of the skirt portion 51 is flexed to expand vertically upward, and the buckling is performed. The portion is just received in the gap portion 64 inside the button portion 6. Further, when the skirt portion 51 of the rubber spring 5 is deformed, the pressing portion 50 sinks downward, so that the movable contact portion 2IB of the elastic tongue 20B comes into contact with the fixed contact portions 21A, 21A of the fixed contact piece 2A. Thereby, the fixed terminal 20'20 is turned on by the elastic tongue 20B, and the switch is switched to the on state. And when the external force is released, the rubber spring 5 returns to the original dome shape by its own elastic force, and the elastic tongue 20B returns to the original state, the button portion 6 rises, and returns to the state shown in Fig. 9 (a). The original location shown. Thereby, the movable contact portion 2 1 B of the elastic tongue 20B is separated from the fixed contact portions 21A and 21A of the fixed contact piece 2 A, and the conduction between the left and right fixed terminals 20 and 20 is cut off, and the switch is switched to OFF status. Thus, according to the push button switch 1 of the present invention, the movable contact piece 2B 'the fixed contact piece 2A is inserted and fixed to the bottom portion 3 of the casing 3, and has a resilient tongue as a tongue on the movable contact piece 2B. The sheet 20B, which is formed to be bent upward and has an elastic force, is disposed on the one end side thereof in a normal state, and is disposed separately from the fixed contact portions 2 1 A, 2 1 A and fixedly connected during the switching operation. The movable contact portion 2 1 B in contact with the point portion 2 1 A and 2 1 A. Thus, -13-201112289, by inserting the movable contact piece 2B into the bottom portion 31 of the casing 3, it is possible to perform a stable switching operation. Further, by bending and forming the elastic tongue 2 OB and providing the movable contact piece 2B, the assembly process can be reduced, and the number of parts can be reduced, and the manufacturing cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the overall configuration of a push button switch of the present invention, wherein (a) is a top view of the same I switch, (b) is a front view of the same switch, and (c) is an inner view of the same switch. (d) is the side view of the same switch, (e) is the A-A line cross-sectional view of the same figure (a) ' (f) is the B-B line sectional view of the same figure (a) ° Figure 2 is A diagram showing the substrate of the contact sheet, (a) is a plan view, (b) is a partial enlarged view of (a), (c) is a cross-sectional view taken along line A-A, and (d) is a cross-sectional view taken along line B-B. . Fig. 3 is a top view for explaining a state in which a contact piece is insert-molded and fixed to a casing. Fig. 4 is a view showing a housing in which a contact piece is inserted and fixed; (a) is a top view, (b) is a front view, (c) is a cross-sectional view taken along line A_A, and (d) is a side view; Fig., (e) is a line sectional view of (a), and is an inner view. Fig. 5 is a view showing a bottom cover, wherein (a) is a top view, (b) is a figure, and (c) is a side view. Fig. 6 is a view showing a rubber spring, wherein (a) is a top view, (b) a side view, and (c) is a cross-sectional view taken along line A-A of (a). __ Fig. 7 is a view showing the button portion, (a) is the upper view, (b) is the -14-201112289 surface view, and (C) is the (a) A_A line sectional view '(d) is the inside view, (e) is a side view. Fig. 8 is a view for explaining an assembly process of the push button switch. Fig. 9 is a cross-sectional view for explaining an operation state of the push button switch, wherein (a) is a normal state and (b) is a switch operation state. [Main component symbol description] 1 : Push button switch 200 : Contact pad substrate 2 0 1 : Wire portion 2 : Contact piece 2A : Fixed contact piece 20A : Fixed terminal 2 1 A : Fixed contact part 2B : Movable Contact piece 2 0 B : elastic tongue 2 1 B : movable contact part 3 : housing 3 1 : storage part 32 : bottom 4 : bottom cover 5 : rubber spring 51 : skirt 52 : convex part -15- 201112289 6 : button portion 61 : vertical wall portion 62 : locking claw 63 : crown portion 64 : gap portion