507232 A7 B7 五、發明説明（彳） 〔發明之所屬技術領域〕 本發明係有關由鍵端之按壓操作來進行接點切換之鍵 開關。 〔以往之技術〕 鍵開關係作爲行動電話及音響機材等之輸入裝置之構 成，由進行接點切換之鍵元件部與，使此鍵元件部動作之 鍵端所槪略構成。 從以往，作爲如此鍵開關，將設置固定接點之下部基 板與圓弧狀之觸動彈簧使用薄膜構件來重疊成爲一體化構 成鍵開關，而使鍵端支撐在組裝此鍵元件之外裝框等之構 成被提案著。而前述觸動彈簧係爲作爲可動接點之功能， 根據此觸動彈簧與固定接點之接離而進行開/關之切換動 作。另，於前述鍵端上印刷有表示功能內容之數字及文字 等之表示部，而於該鍵端底面中央一體形成有爲了按壓觸 動彈簧頂部之突起。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 針對如此構成之鍵開關，當使用者按壓鍵端端面時， 因其按壓力則介由鍵端底面的突起傳達至觸動彈簧，所以 該觸動彈簧則伴隨觸碰感彈跳接觸於固定接點，成爲開關 開敔狀態，另，當除去在鍵端之上述按壓力時，觸動彈簧 則由自身的彈性恢復成周弧狀，所以鍵端係在回成初期位 置，而成爲開關關閉狀態。 〔欲解決發明之課題〕 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4- 507232 經濟部中央標準局員工消費合作社印聚 kl B7 五、發明説明（2 ) 但，鍵端之表示部係有印刷在端面與印刷在底面之情 況，針對光照型式之鍵開關係印刷表示部在利用透明材料 形成之鍵端底面，由在夜間等暗處使L E D等光源點亮， 再使從該光源的光照射在鍵端底面來辨視表示部之構成則 被廣範地採用著。 但在前述所述之以往的鍵開關係因一體形成爲了按壓 觸動彈簧頂部之突起於鍵端底面，所以無法確保在該鍵端 底面之平面印刷，而有著表示部印刷範圍之限制問題。此 情況，也考慮將表示部印刷在鍵端端面，但因鍵端爲使用 者直接接觸之部份，由於使常重複使用所以表示部則容易 產生剝離。另，在前述所述之鍵開關係因鍵元件部與鍵端 則介由外裝框來決定位置，所以又因各構件之尺寸誤差及 組裝誤差的原因，鍵端對於觸動彈簧頂部有偏離現象，因 此有著觸動彈簧之動作觸感惡化，接點切換動作不確實之 問題。 〔爲了解決課題之手段〕 本發明係將可動接點一體地設置於上部薄膜之下面， 再於此上部薄膜形成爲了傳達從鍵端傳來之按壓力至可動 接點之突起。 當如此形成突出於可動接點被一體化之上部薄膜時， 並不只可確保在鍵端底面平面印刷，即使在鍵端與可動接 點發生移位，從鍵端傳來的按壓力則可確實地傳達至可動 接點。 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -5- 經濟部中央標準局員工消費合作社印製 507232 A7 _____________ B7 五、發明説明（3 ) 〔發明之實施形態〕 在本發明之鍵開關係備有擁有固定接點之下部基板與 ’與此下部基板成爲一體之上部薄膜與，一體設置在此上 部薄膜下面，再於前述固定接點保持規定間隔然後對向之 可動接點與，使此可動接點對於前述固定接點進行接離之 鍵端，再於因應前述上部薄膜之前述可動接點的位置形成 突起，而從前述鍵端傳來之按壓力則介由此突起傳達至前 述可動接點地構成。 前述突起係可形成在薄膜上面及下面任何一方，當突 起形成在上部薄膜上面之情況係由浮雕加工等使上部薄膜 之一部份膨出也可以，但將尿烷系樹脂及環氧系樹脂印刷 在上部薄膜上爲最好。另，將印刷在上部薄膜之下面之接 著劑突出也可以，此情況，作爲可動接點，然後利用圓弧 狀觸動彈簧，再根據突出此觸動彈簧，然後再接著於上部 薄膜之下面即可。 另，前述之薄膜材料並無特別限定任何材料，但，當 使用由光擴散性材料而成之上部薄膜時，可使從光源傳來 的光：在上部薄膜擴散，然後照射於鍵端底面，而對於光 照型鍵開關爲最適當。 〔實施例〕 有關實施例，參照圖面進行說明，圖1係有關本發明 之一實施例之鍵開關剖面圖，圖2係爲備於該鍵開關之上 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 1T^ (請先閱讀背面之注意事項再填寫本頁) 507232 B7 五、發明説明（4 ) 部薄膜之平面圖。而有關實施例之鍵開關係作爲行動電話 等之操作面板被使用之構成，而如圖1所示，根據下部基 板1與，接著在觸動彈簧2於下面之上部薄膜3與，爲了 驅動觸動彈簧之鍵端4所槪略構成。 於下部基板1之表面裝置作爲光源之L E D 5之同時 ’設置有中央固定接點6與包圍這個之周緣固定接點7。 而在圖1中只表示有一對之中央固定接點6與周緣固定接 點7，但在實施例中，中央固定接點6與周緣固定接點7 則成對複數配列成矩陣狀。 觸動彈簧係作爲可動接點之功能，加工磷青銅等之金 屬彈簧材料形成爲圓弧狀。而觸動彈簧2之周緣部係時常 地接觸在周緣固定接點7，但其頂部係與中央固定接點6 保持規定間隔離間著。而觸動彈簧2之頂部係接著在上部 薄膜3之下面，在實施例中配合中央固定接點6與周緣固 定接點7之配列，然後複數的觸動彈簧2則成矩陣狀配列 在上部薄膜3之下面。 經濟部中央標準局員工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 上部薄膜3係由表面被梨地處理之P E T薄膜等之光 擴散性材料形成，而其上面形成有突起8·而此突起8的 形成位置係因應接著在上部薄膜3之下面的觸動彈簧2頂 部’如圖2所示，在實施例中，複數的突起8係成矩陣狀 形成在上部薄膜3之上面。而這些突起8係由將例如：尿 烷系樹脂印刷在上部薄膜3之上面所形成，再根據印刷技 術謀求各別之均一突出量。另，上部薄膜3之周緣部與下 部基板1係使用接著劑與框體9成一體化，再由這些各構 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29*7公f ) 507232 A7 B7 五、發明説明（5 ) 件來構成鍵元件。 鍵端4係利用丙烯樹脂等之透明材料所形成’再於其 平面底面印刷形成數字及文字等表示部（不圖示）。而鍵 端4之上部係從外裝框1 0之引導孔1 〇 a突出著，而外 裝框1 0係使螺絲固定及接著劑等固定在框體9。而鍵端 4之底面係對向於上部薄膜3之突起8，隨之，在實施例 中，複數的鍵端4則成矩陣狀配列在外裝框1 0。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 如上述之構成的鍵開關係當使用者按壓所希望之鍵端 4端面時，因其按壓力係介由突起8與上部薄膜3，然後 傳達至下方的觸動彈簧2之頂部，所以在使該鍵端4規定 鍵擊下降時，因應之觸動彈簧2伴隨著觸碰感彈跳接觸， 觸動彈簧2之頂部則接觸於中央固定接點6而成爲開關開 啓狀態。此時，即使因各構件之尺寸誤差及組裝誤差等之 原因，然後各鍵端4與鍵元件部之相對位置多少有點移位 ，因高精確地維持印刷形成於上部薄膜3之上面的突起8 與接著在上部薄膜3之下面的觸動彈簧2之相對位置，所 以不會惡化觸動彈簧2之動作觸感。並，當除去在鍵端4 之按壓力時，因觸動彈簧則由自身的彈性恢復成圓弧狀， 所以伴隨此，上部薄膜3與鍵端4押回成初期位置，而成 爲開關關閉狀態。另，在夜間等之暗處，當點亮L E D 5 之情況，因從L E D 5所射出之光則在上部薄膜3進行擴 散，然後亮度大略平均地照射在鍵端4之底面，所以印刷 在透明之鍵端4底面的表示部則被均等，且充份的亮度所 照射，再透過鍵端4可明瞭地辨視表示部。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -8 - 經濟部中央標隼局員工消費合作社印製 507232 A7 B7 五、發明説明（6 ) 表示於圖3之實施例中，印刷接著劑於上部薄膜3之 下面，然後形成突出1 1，再接著觸動彈簧2之頂部於此 突起。此情況，突起1 1係擁有傳達鍵端4之按壓力至觸 動彈簧2之功能與，接著觸動彈簧2於上部薄膜的功能。 在表示於圖4之實施例中，根據浮雕加工形成膨出部 3 a在上部薄膜3，再於此膨出部3 a下面印刷形成作爲 可動接點1 2之導電塗料之同時，於膨出部3 a之上面頂 部形成有突起8。此情況，膨出部3 a與可動接點1 2則 得到與前述之觸動彈簧2相樣的功能，另伴隨著鍵端4的 按壓而產生膨出部3 a彈跳接觸感。 又，針對圖4所示之實施例，不需要觸踫感之情況係 如通常之薄膜開關，將沒有膨出部3 a之平面上部薄膜3 介由襯墊重量在下部基板1，再形成突起8於因應可動接 點1 2之上部薄膜3之上面即可，另，作爲下部基板1利 用薄膜材也可以。 〔發明之效果〕 本發明係如以上所說明的形態來實施，而得到以下所 記載之效果。 備有擁有固定接點之下部基板與，與此下部基板成爲 一體之上部薄膜與，一體地設置在此上部薄膜，再於前述 固定接點上保持規定間隔對向之可動接點與，對於前述固 定接點使此可動接點接離之鍵端，而於因應前述上部薄膜 之前述可動接點的位置上形成突起，然後從鍵端傳來的按 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公楚） ^ -1T^ ^ (請先閱讀背面之注意事項再填寫本頁) -9- 507232 經濟部中央標準局員工消費合作社印製 ΑΊ B7 五、發明説明（7 ) 壓力則介由此突起傳達至前述可動接點地構成時，並不只 可確保在鍵端底面的平面印刷面，即使在鍵端與可動接點 發生位置移位，也可以確實地傳達從鍵端傳來的按壓力至 可動接點。 另，當作爲前述上部薄膜使用光擴散性材料時，因在 上部薄膜可使從光源的光擴散，照射於鍵端底面，所以光 照型之鍵開關最爲適合。 〔圖面之簡單〕 〔圖1〕 有關本發明之一實施例的鍵開關剖面圖。 〔圖2〕 備於該鍵開關之上部薄膜的平面圖。 〔圖3〕 表示突起變形例之說明圖。 〔圖4〕 表示可動接點變形例之說明圖。 〔符號說明〕 1 下部基板，2 觸動彈簧，3 上部薄膜，3 a 膨出部，4 鍵端，5 LED，6 中央固定接點，7 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） n ϋι —ϋ —^1 ·1ϋ .mi HI I*— In mu ·ϋϋ I ϋ*ϋ I TJ n·^— ϋϋ ϋϋ —.^ϋ .Β^—i 1ι^ϋ (請先閲讀背面之注意事項再填寫本頁) -10- 507232 A7 B7五、發明説明（8 )周緣固定接點，8，11 突起，9 框體，10 外裝 框，1 0 a 導引孔，1 2 可動接點。 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（2ΗΓΧ 297公釐） ^507232 A7 B7 V. Description of the invention (彳) [Technical field to which the invention belongs] The present invention relates to a key switch for performing contact switching by pressing a key end. [Conventional technology] The key-on relationship, as an input device for mobile phones, audio equipment, and the like, is composed of a key element section for switching contacts and a key end for operating the key element section. Conventionally, as such a key switch, a lower substrate provided with a fixed contact and an arc-shaped contact spring are laminated with a thin film member to form an integrated key switch, and the key end is supported by an outer frame for assembling the key element, etc. Its composition is proposed. The aforementioned touch spring functions as a movable contact, and the on / off switching operation is performed according to the disconnection of the touch spring from the fixed contact. In addition, a display portion showing numbers and characters indicating function contents is printed on the key end, and a protrusion for pressing the top of the spring is formed integrally in the center of the bottom surface of the key end. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). For a key switch of this structure, when the user presses the end face of the key end, due to its pressing force, it passes through the bottom face of the key end. The protrusion is transmitted to the touch spring, so the touch spring bounces into contact with the fixed contact with a touch feeling, and becomes a switch opening state. In addition, when the above-mentioned pressing force on the key end is removed, the touch spring is restored from its own elasticity to The arc is round, so the key end is in the initial position, and the switch is turned off. [Question to solve the invention] The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -4- 507232 Employees' Cooperative Cooperative Printing Co., Ltd. K7 of the Central Standards Bureau of the Ministry of Economic Affairs. The display part of the end is printed on the end surface and on the bottom surface. For the key opening relationship of the light type, the print display part uses a transparent material for the bottom surface of the key end. The structure in which the light from the light source is irradiated to the bottom surface of the key end to discern the display portion is widely used. However, the conventional key opening relationship described above is integrally formed to press the protrusion of the top of the trigger spring on the bottom surface of the key end, so it is impossible to ensure flat printing on the bottom surface of the key end, and there is a problem that the printing range of the display portion is limited. In this case, it is also considered that the display portion is printed on the end face of the key end. However, since the key end is a part directly contacted by the user, the display portion is likely to be peeled off due to repeated use. In addition, in the aforementioned key opening relationship, the position of the key element portion and the key end is determined by the outer frame. Therefore, due to the size error and assembly error of each component, the key end has a deviation from the top of the touch spring. Therefore, there is a problem that the touch feeling of the spring is deteriorated, and the contact switching operation is not sure. [Means for solving the problem] The present invention is a system in which a movable contact is integrally provided under an upper film, and a protrusion is formed on the upper film to transmit a pressing force transmitted from a key end to the movable contact. When the thin film protruding above the movable contact is integrated, it is not only guaranteed to print on the bottom surface of the key end. Even if the key end and the movable contact are displaced, the pressing force transmitted from the key end can be reliably determined. The ground is transferred to the movable contact. (Please read the precautions on the back before filling this page) This paper size is applicable to Chinese National Standard (CNS) A4 (210X 297 mm) -5- Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 507232 A7 _____________ B7 V. Description of the invention (3) [Embodiment of the invention] In the key opening relationship of the present invention, a lower substrate having a fixed contact and an upper film integrated with this lower substrate are provided, and are integrally disposed below the upper film, and then The fixed contact maintains a predetermined interval and then faces the movable contact and the key end of the movable contact to disconnect the fixed contact, and then forms a protrusion at the position corresponding to the movable contact of the upper film, and The pressing force transmitted from the key end is transmitted through the protrusion to the movable contact. The protrusions may be formed on either the upper or lower surface of the film. When the protrusions are formed on the upper film, relief processing may be used to swell a portion of the upper film. However, urethane resin and epoxy resin may be used. It is best to print on the upper film. Alternatively, the adhesive printed on the lower surface of the upper film may be protruded. In this case, as the movable contact point, the arc spring is used to trigger the spring, and then the spring is projected, and then the lower surface of the upper film is used. In addition, the aforementioned film material is not particularly limited to any material, but when an upper film made of a light diffusing material is used, light transmitted from a light source can be diffused in the upper film and then irradiated to the bottom surface of the key end, It is most suitable for illuminated key switches. [Embodiment] The embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a key switch according to an embodiment of the present invention, and FIG. 2 is a paper switch prepared on the key switch. ) A4 size (210X297mm) 1T ^ (Please read the precautions on the back before filling out this page) 507232 B7 5. Description of the invention (4) Plan view of the film. The key-on relationship of the embodiment is used as an operation panel of a mobile phone or the like. As shown in FIG. 1, according to the lower substrate 1 and then the touch spring 2 and the upper upper film 3 below, in order to drive the touch spring. The key end 4 is roughly formed. A central fixed contact 6 and a peripheral fixed contact 7 surrounding this are provided at the same time as the LED device 5 of the surface of the lower substrate 1 as a light source. In FIG. 1, only one pair of the central fixed contact 6 and the peripheral fixed contact 7 are shown. However, in the embodiment, the central fixed contact 6 and the peripheral fixed contact 7 are arranged in pairs and form a matrix. The touch spring functions as a movable contact, and a metal spring material such as phosphor bronze is formed into an arc shape. On the other hand, the peripheral portion of the touch spring 2 is always in contact with the peripheral fixed contact 7, but the top portion of the contact spring 2 is kept at a predetermined distance from the central fixed contact 6. The top of the touch spring 2 is below the upper film 3. In the embodiment, the arrangement of the central fixed contact 6 and the peripheral fixed contact 7 is arranged, and then the plurality of touch springs 2 are arranged in a matrix in the upper film 3. below. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) The upper film 3 is made of light diffusing materials such as PET film whose surface is treated with pear ground, and protrusions 8 are formed on it The position where the protrusions 8 are formed is corresponding to the top of the touch spring 2 below the upper film 3 as shown in FIG. 2. In the embodiment, a plurality of protrusions 8 are formed in a matrix form on the upper film 3. These protrusions 8 are formed by printing, for example, a urethane-based resin on the upper film 3, and further, a uniform protrusion amount is obtained according to a printing technique. In addition, the peripheral edge portion of the upper film 3 and the lower substrate 1 are integrated with the frame body 9 using an adhesive, and then the paper sizes of these components are adapted to the Chinese National Standard (CNS) A4 specification (210X29 * 7 male f) 507232 A7 B7 Fifth, the description of the invention (5) to constitute the key element. The key end 4 is formed of a transparent material such as acrylic resin, and is printed on the flat bottom surface to form numerals and characters (not shown). The upper part of the key end 4 protrudes from the guide hole 10a of the outer frame 10, and the outer frame 10 is fixed to the frame 9 with screws and adhesives. The bottom surface of the key end 4 is opposite to the protrusion 8 of the upper film 3, and accordingly, in the embodiment, a plurality of key ends 4 are arranged in a matrix in the outer frame 10. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). The key-on relationship constituted as described above. When the user presses the end face of the desired key 4 Since the protrusion 8 and the upper film 3 are transmitted to the top of the touch spring 2 below, when the prescribed keystroke of the key end 4 is lowered, the touch spring 2 bounces in response to the touch, and the top of the spring 2 is touched. Then, it contacts the central fixed contact 6 and becomes a switch-on state. At this time, the relative position of each key end 4 and the key element part is somewhat shifted due to the dimensional error and assembly error of each member, etc., because the protrusions 8 formed on the upper film 3 are printed with high accuracy and maintained The position relative to the touch spring 2 that is next to the upper film 3 does not deteriorate the tactile feel of the touch spring 2. In addition, when the pressing force on the key end 4 is removed, the trigger spring is restored to its arc shape from its own elasticity. Accordingly, the upper film 3 and the key end 4 are pushed back to their initial positions and the switch is turned off. In the dark place such as at night, when the LED 5 is turned on, the light emitted from the LED 5 is diffused in the upper film 3, and then the brightness is irradiated on the bottom surface of the key end 4 approximately evenly, so it is printed on the transparent The display portion on the bottom surface of the key end 4 is evenly illuminated with sufficient brightness, and the display portion can be clearly seen through the key end 4. This paper size applies to China National Standard (CNS) A4 (210X 297 mm) -8-Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 507232 A7 B7 V. The description of the invention (6) is shown in the embodiment of Figure 3 The adhesive is printed under the upper film 3, and then a protrusion 11 is formed, and then the top of the spring 2 is touched to protrude therefrom. In this case, the protrusion 11 has the function of transmitting the pressing force of the key end 4 to the spring 2 and then the spring 2 on the upper film. In the embodiment shown in FIG. 4, the bulging portion 3a is formed according to the relief processing on the upper film 3, and then the conductive coating as the movable contact 12 is printed under the bulging portion 3a, and the bulging is performed at the same time. A protrusion 8 is formed on the top of the upper portion of the portion 3 a. In this case, the bulging portion 3a and the movable contact 12 have functions similar to those of the above-mentioned touch spring 2. In addition, as the key end 4 is pressed, the bulging portion 3a has a bouncing contact feeling. In addition, for the embodiment shown in FIG. 4, the case where no tactile sensation is required is the same as a conventional membrane switch, and a flat upper film 3 without the bulging portion 3 a is formed on the lower substrate 1 through the weight of the pad to form a protrusion. 8 may be on the upper film 3 corresponding to the movable contact 12, and a thin film material may be used as the lower substrate 1. [Effects of the Invention] The present invention is implemented as described above, and the effects described below are obtained. There is a lower substrate with fixed contacts and an upper film integrated with the lower substrate. The upper film is integrated with the upper film, and a movable contact and a predetermined distance are fixed on the fixed contact. The fixed contact causes the movable contact to be disconnected from the key end, and a protrusion is formed at the position corresponding to the aforementioned movable contact of the upper film, and then the national standard (CNS) A4 is applied according to the paper size transmitted from the key end. Specifications (210X297 Gongchu) ^ -1T ^ ^ (Please read the notes on the back before filling this page) -9- 507232 Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ΑΊ B7 V. Description of the invention (7) Pressure When the protrusion is transmitted to the structure of the movable contact, the flat printing surface on the bottom surface of the key end is not only ensured. Even if the position of the key end and the movable contact is shifted, the transmission from the key end can be reliably transmitted Press the pressure to the movable contact. When a light diffusing material is used as the upper film, the upper film can diffuse light from a light source and irradiate the bottom surface of the key end. Therefore, a light-illuminated key switch is most suitable. [Simplification of Drawings] [FIG. 1] A sectional view of a key switch according to an embodiment of the present invention. [Fig. 2] A plan view of a film provided above the key switch. [Fig. 3] An explanatory view showing a modification of the protrusion. [Fig. 4] An explanatory diagram showing a modified example of the movable contact. 〔Explanation of symbols〕 1 lower base plate, 2 touch spring, 3 upper film, 3 a bulge, 4 key end, 5 LED, 6 central fixed contact, 7 paper size applies to Chinese National Standard (CNS) Α4 specification (210 × 297 Mm) n ϋι —ϋ — ^ 1 · 1ϋ .mi HI I * — In mu · ϋϋ I ϋ * ϋ I TJ n · ^ — ϋϋ ϋϋ —. ^ Ϋ .Β ^ —i 1ι ^ ϋ (Please read first Note on the back, please fill out this page again) -10- 507232 A7 B7 V. Description of the invention (8) Peripheral fixed contacts, 8, 11 protrusions, 9 frame, 10 outer frame, 1 0 a guide hole, 1 2 Movable contact. (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs This paper is sized for the Chinese National Standard (CNS) A4 (2ΗΓ × 297 mm) ^