200933674 九、發明說明： 【發明所屬之技術領域】 本發明係為一種具有南靈敏度之按鍵結構，尤其是有 * 關於一種利用鍵帽之凸出單元作動底板之懸臂單元以輔助 電路開關之按鍵結構。 【先前技術】 當電腦迅速地被廣泛使用後’其功能也日新月異’而 ❹ 鍵盤也相應地成為最重要的資訊輸入介面之一。 習知之鍵盤結構如圖一所示’此類的按鍵結構1包括 一鍵帽ίο、〆剪刀式結構11、一薄膜電路板12，以及一 底板13,其中該剪刀式結構11係由一第一支架no與一第 二支架111樞接而成。該底板之上係放置薄膜電路板 12，該薄膜電路板12上設有電路開關120，該薄膜電路板 12上再放置該剪刀式結構11 ’該剪刀式結構11之上再放 置該鍵帽10，為便於電路開關120之切換，該薄膜電路板 〇 丨2與該鍵帽10之間更設有一彈性體112 ’該彈性體112係 , 置於該電路開關120上且穿過該剪刀式結構11。 圖二Α至圖二C係為圖一習知鍵盤之剖面圖，為便於 示意，係省略剪刀式結構。在鍵帽10未被按下時，電路開 關120係未接通，如圖二A所示。當鍵帽10被平均施力 按下時，電路開關120便被接通，如圖一 B所示。然而， 於某些情況下（例如快速打字時），鍵帽10往往不會被平 均按下，而是僅被觸壓到某一角落，如圖二C所示，如此 雖然感覺鍵帽1〇有被壓下，但卻無法接通電路開關12〇而 200933674 造成鍵盤不靈敏，形成漏字現象，因此常會造成使用者之 街擾。 緣此，本案之發明人係研究出一種具有高靈敏度之按 鍵結構，其係能解決上述課題。 【發明内容】 本發明之主要目的係為提供一種具有高靈敏度之按鍵 結構，其係利用鍵帽之凸出單元作動底板之懸臂單元以達 成電路開關之目的。 為達上述目的，本發明係提供一種具有高靈敏度之按 鍵結構，包括一鍵帽，具有一凸出單元；一底板，設置於 該鍵帽之下方，具有一懸臂單元，且該懸臂單元具有一端 點；一支撐結構，設置於該鍵帽與該底板之間，且分別與 該鍵帽與該底板相連接，使得該鍵帽可相對該底板做上下 運動；以及一薄膜電路板，設置於該底板上，具有一電路 開關，其中該薄膜電路板相對於該凸出單元處具有一破 孔；其中，當該鍵帽被壓下時，該凸出單元會通過該破孔 而接觸該懸臂單元，該懸臂單元之端點便相應上升而接觸 該電路開關。 又為達上述目的，本發明更提供一種具有高靈敏度之 按鍵結構，包括複數個鍵帽，該等鍵帽分別具有一凸出單 元；一底板，設置於該鍵帽之下方，具有複數個懸臂單元， 且該等懸臂單元分別具有一端點；複數個支撐結構，設置 於該鍵帽與該底板之間，且分別與該鍵帽與該底板相連 接，使得該等鍵帽可相對於該底板做上下運動；以及一薄 6 200933674 膜電路板，設置於該底板上，具有複數個電路開關，其中 該薄膜電路板相對於該等凸出單元處具有一破孔；其中， 當等該鍵帽被壓下時，該等凸出單元會通過該等破孔而接 觸該等懸臂單元，該等懸臂單元之該端點便相應上升而接 觸該電路開關。 為使貴審查委員對於本發明之結構目的和功效有更 進一步之了解與認同，茲配合圖示詳細說明如後。 【實施方式】 以下將參照隨附之圖式來描述本發明為達成目的所使 用的技術手段與功效，而以下圖式所列舉之實施例僅為辅 助說明，以利貴審查委員暸解，但本案之技術手段並不限 於所列舉圖式。 請參見圖三，其係為本發明具有高靈敏度之按鍵結構 之立體分解圖。本發明具有高靈敏度之按鍵結構3包括一 鍵帽30、一剪刀式結構31、一薄膜電路板32，以及一底 板33，其中該剪刀式結構31係由一第一支架310與一第 二支架311樞接而成。該底板33之上係放置薄膜電路板 32，該薄膜電路板32上設有電路開關320，該薄膜電路板 32上再放置該剪刀式結構31，該剪刀式結構31之上再放 置該鍵帽30，為便於電路開關320之切換，該薄膜電路板 32與該鍵帽30之間更設有一彈性體312,該彈性體312係 置於該電路開關320上且穿過該剪刀式結構31。 不同於習知技術的是，鍵帽30於面對薄膜電路板32 側之四個角落上設有四個凸出單元300，底板33上則設有 7 200933674 四個懸臂單元330，且各懸臂單元330具有一端點3300， 該端點3300係對應於該電路開關320之位置，而薄膜電路 板32則於相對於該等凸出單元300處設有對應之破孔321。 再請參見圖四A與圖四B，其係為本發明具有高靈敏 度之按鍵結構之刮面圖，為便於示意，係省略剪刀式結構。 圖四A表示鍵帽30尚未被按下時之狀況；當鍵帽30被不 平均按下時，如圖四B所示，設置於鍵帽30角落之凸出單 元300會同時下降，並接觸到該懸臂單元330，由於槓桿 原理，該懸臂單元330之端點3300便上升而接觸到電路開 關320使其接通。 於本發明中，該凸出單元係可與鍵帽一體成形製作或 是用黏貼之方式另外製作於鍵帽上；而該懸臂單元則是與 底板一體成形製作。 如此，由於本發明之按鍵結構係利用凸出單元與懸臂 單元之配合，使得當按鍵被不平均壓下時（例如：僅壓下 一邊角）亦能作動電路開關，故具有高靈敏度；此外，由 於不需要另外於鍵盤中間設置膜層，故亦能維持厚度薄化 之要求，為此技術領域中極具競爭力之產品。 唯以上所述者，僅為本發明之最佳實施態樣爾，當不 能以之限定本發明所實施之範圍。即大凡依本發明申請專 利範圍所作之均等變化與修飾，皆應仍屬於本發明專利涵 蓋之範圍内，謹請貴審查委員明鑑，並祈惠准，是所至 禱。 【圖式簡單說明】 8 200933674 知按鍵結構之立體分解圖； 圖一 A係為習知k .j. 、 ^鍵結構之剖面圖； :二c:ii:知桉鍵結構之第-操作狀態剖面圖； 係二！知按鍵結構之第二操作狀態剖面圖； 圖； ，•以 圖:A係為具有高1敏度之按鍵結構之立體分库 及…、、本1明具有高靈敏度之按鍵結構之剖面圖200933674 IX. Description of the invention: [Technical field of the invention] The present invention is a button structure having a south sensitivity, in particular, a button structure for assisting a circuit switch by a cantilever unit that uses a protruding unit of a key cap to actuate a bottom plate . [Prior Art] When the computer is quickly used widely, its functions are changing with each passing day. ❹ The keyboard is also one of the most important information input interfaces. The keyboard structure of the prior art is as shown in FIG. 1. The key structure 1 of the present type includes a keycap ίο, a scissor structure 11, a thin film circuit board 12, and a bottom plate 13, wherein the scissor structure 11 is composed of a first The bracket no is pivotally connected to a second bracket 111. A thin film circuit board 12 is disposed on the bottom plate. The thin circuit circuit board 12 is provided with a circuit switch 120. The thin film circuit board 12 is further placed with the scissor structure 11'. The key structure 10 is placed on the scissors structure 11. In order to facilitate the switching of the circuit switch 120, an elastic body 112 is disposed between the thin film circuit board 2 and the keycap 10, and the elastic body 112 is disposed on the circuit switch 120 and passes through the scissors structure. 11. 2A to 2C are cross-sectional views of the conventional keyboard of Fig. 1. For convenience of illustration, the scissors structure is omitted. When the keycap 10 is not depressed, the circuit switch 120 is not turned on, as shown in Fig. 2A. When the keycap 10 is pressed by the average force, the circuit switch 120 is turned on, as shown in Fig. 1B. However, in some cases (such as when typing quickly), the keycap 10 is often not pressed on average, but is only touched to a certain corner, as shown in Fig. 2C, so that although the keycap is felt It has been pressed, but it can't turn on the circuit switch 12〇 and 200933674 causes the keyboard to be insensitive, forming a missing word phenomenon, which often causes the user's street trouble. Accordingly, the inventors of the present invention have developed a key structure having high sensitivity, which can solve the above problems. SUMMARY OF THE INVENTION The main object of the present invention is to provide a button structure with high sensitivity, which utilizes a protruding unit of a key cap to actuate a cantilever unit of a bottom plate to achieve a circuit switch. To achieve the above object, the present invention provides a button structure having high sensitivity, comprising a keycap having a protruding unit; a bottom plate disposed below the keycap, having a cantilever unit, and the cantilever unit having one end a support structure is disposed between the keycap and the bottom plate, and is respectively connected to the bottom plate and the bottom plate, so that the key cap can move up and down relative to the bottom plate; and a thin film circuit board is disposed on the bottom plate a circuit switch having a circuit switch, wherein the film circuit board has a hole relative to the protruding unit; wherein when the key cap is pressed, the protruding unit contacts the cantilever unit through the hole The end of the cantilever unit rises correspondingly to contact the circuit switch. In order to achieve the above object, the present invention further provides a button structure having high sensitivity, comprising a plurality of key caps each having a protruding unit; a bottom plate disposed under the key cap and having a plurality of cantilevers a unit, and the cantilever units respectively have an end point; a plurality of support structures are disposed between the key cap and the bottom plate, and are respectively connected to the bottom plate and the bottom plate so that the key caps are opposite to the bottom plate And a thin 6 200933674 film circuit board disposed on the bottom plate, having a plurality of circuit switches, wherein the thin film circuit board has a hole with respect to the protruding units; wherein, when the key cap is waiting When depressed, the protruding units contact the cantilever units through the holes, and the end points of the cantilever units rise correspondingly to contact the circuit switch. In order to enable the reviewing committee to have a better understanding and approval of the structural purpose and efficacy of the present invention, the detailed description is as follows. [Embodiment] Hereinafter, the technical means and effects of the present invention for achieving the object will be described with reference to the accompanying drawings, and the embodiments listed in the following drawings are only for the purpose of explanation, so that the reviewer understands, but the case Technical means are not limited to the illustrated figures. Referring to FIG. 3, it is an exploded perspective view of the button structure with high sensitivity of the present invention. The button structure 3 with high sensitivity of the present invention comprises a keycap 30, a scissor structure 31, a film circuit board 32, and a bottom plate 33, wherein the scissor structure 31 is composed of a first bracket 310 and a second bracket. 311 is pivoted. A thin film circuit board 32 is disposed on the bottom plate 33. The thin film circuit board 32 is provided with a circuit switch 320. The scissors circuit structure 32 is placed on the thin film circuit board 32. The key structure is placed on the scissors structure 31. 30. In order to facilitate the switching of the circuit switch 320, an elastic body 312 is disposed between the thin film circuit board 32 and the keycap 30, and the elastic body 312 is disposed on the circuit switch 320 and passes through the scissors structure 31. Different from the prior art, the key cap 30 is provided with four protruding units 300 on four corners facing the side of the thin film circuit board 32, and the bottom plate 33 is provided with four 200933674 four cantilever units 330, and each cantilever The unit 330 has an end point 3300 corresponding to the position of the circuit switch 320, and the thin film circuit board 32 is provided with a corresponding hole 321 at the protruding unit 300. Referring to FIG. 4A and FIG. 4B, respectively, it is a scraping surface diagram of the button structure with high sensitivity of the present invention. For convenience of illustration, the scissors structure is omitted. 4A shows the state when the keycap 30 has not been pressed; when the keycap 30 is pressed unevenly, as shown in FIG. 4B, the protruding unit 300 disposed at the corner of the keycap 30 is simultaneously lowered and contacts. To the cantilever unit 330, due to the principle of leverage, the end point 3300 of the cantilever unit 330 rises to contact the circuit switch 320 to turn it on. In the present invention, the protruding unit can be integrally formed with the key cap or separately formed on the keycap by adhesive bonding; and the cantilever unit is integrally formed with the bottom plate. In this way, since the button structure of the present invention utilizes the cooperation of the protruding unit and the cantilever unit, the button can be actuated when the button is pressed unevenly (for example, only the corner angle is pressed), thereby providing high sensitivity; Since it is not necessary to additionally provide a film layer in the middle of the keyboard, it is also possible to maintain the requirement of thinning thickness, which is a highly competitive product in the technical field. The above is only the preferred embodiment of the invention, and the scope of the invention is not limited thereto. That is to say, the equivalent changes and modifications made by the applicants in accordance with the scope of the patent application of the present invention should still fall within the scope of the patents of the present invention. I would like to ask your review committee to give a clear explanation and pray for the best. [Simple description of the diagram] 8 200933674 Know the three-dimensional exploded view of the button structure; Figure 1A is a cross-sectional view of the conventional k.j., ^ key structure; : 2 c: ii: the first-operating state of the key structure Section view; Department two! A cross-sectional view of the second operational state of the button structure; Fig.; Fig. A: A system of a three-dimensional sub-bank with a high-sensitivity key structure and a profile of a button structure with high sensitivity
圖四B係為本發明具有高 面圖。 靈敏度之按鍵結構之操作狀態剖 【主要元件符號說明】 1-按鍵結構 3-按鍵結構 10-鍵帽 剪刀式結構 12- 薄臈電路板 13- 底板 30-鍵帽 31_剪刀式結構 32- 薄膜電路板 33- 底板 11 〇_弟一支架 111-第二支架 112_彈性體 120-電路開關 200933674 300-凸出單元 310- 第一支架 311- 第二支架 312- 彈性體 320-電路開關 3 21 -破孔 330-懸臂單元 3300-端點Figure 4B is a high-profile view of the present invention. Sensitivity key structure operation state section [main component symbol description] 1-button structure 3-button structure 10-key cap scissor structure 12-thin circuit board 13- bottom plate 30-key cap 31_scissors structure 32-film Circuit board 33 - bottom plate 11 〇 弟 弟 a bracket 111 - second bracket 112 - elastic body 120 - circuit switch 200933674 300 - protruding unit 310 - first bracket 311 - second bracket 312 - elastic body 320 - circuit switch 3 21 - Broken hole 330 - cantilever unit 3300 - end point