五、新型說明： 【新型所屬之技術領域】 本創作係有關於-種鍵盤，特別是指—種發光鍵般 改良結構。 【先前技術】 按目前筆_電腦及手機裝置由於具有便於隨身搆帶及 處=文書資料和即時通訊之功能，故而廣受市場業者及使用者 之肯定及採用’而目前筆記型電腦鍵盤或手機裝置之按鍵均係 採用薄型按繼構’有關筆記型電腦鍵盤其主要係於字鍵之鍵 帽與底板間减連財—籍式支縣構，至於手機裝置之按 鍵則係藉由-薄型彈性鍵盤以觸發按鍵撥號訊號，惟該等習知 筆《己型电腦之薄型架橋式鍵盤結構雖然具有體積超薄、重量輕 巧及操作精確之優點，然而其鍵盤本身並無提供輔助照明之透 光。構。又冲故其鍵盤僅能在光線明亮的地方操作，而無法在 黑暗之地方操作，致而造成其在特殊場合上之使用操作上的不 便。 因而申請人公司遂研發並申請獲准有：發光鍵盤之導光 板及背光模組(本國專利證書號數：M306689號)專利案，該專 利案主要係於導光板上凸設有卡合構造以利於直接組裝架橋 元件，然其並無對各別按鍵及LED光源間距作加強導光之設 計，故使得距離LED光源較遠之按鍵則顯得透光亮度明顯不 足，另而有關習知手機裝置之薄型按鍵雖然其藉由LED光源. 以使按鍵具有透光效果，但是由於各個按鍵同樣因距離LED 光源之不同距離因素，故其會造成各個按鍵透光亮度不同之情 形，甚而造成使用不便之缺點。 另，現有的發光鍵盤係是在一鍵盤的鍵盤單元底部設有 一發光單元(如發光二極體LED)，而發光單元是在一薄膜層底 面設有一軟性電路板層，並在軟性電路板層底面設置一鋁板 層，再在鋁板層底面設置一背光層；當背光層發光時將光線由 鋁板層之空隙經由鍵盤單元各按鍵下方投射出使鍵盤發光，方 便使用者在光線暗的場所仍可操作自如。惟丨此種現有的發光 鍵盤，疋由硬性的銘板層將兩種軟性層（即軟性電路板層與背 光層）區隔開來，其厚度無法再行更輕薄化，使發光鍵盤之厚 度僅受限達於此種極限，厚度無法再行降低。 有鑑於此，本案創作人遂以其多年從事電腦鍵盤之製造 及設計實務雜，而積極研究改良，並經多次實物樣品製作及 測試’進而具體改良f知鍵盤之上述缺點，終致完成本創作。 【新型内容】 因此，本創作的目的係在於解決上述問題而提供一 種相對應各個按鍵設置有發光二極體，並達到薄型化的 發光鍵盤結構。 本創作的另—目的，係在於提供-種發光鍵盤改良 結構，以達龍短卫時、加速產紅序、方便控制良率及 低製造成本。 M394522 故，為達上述目的’本創作係提出一種發光鍵盤改良結 構，其係包括一底板、一間隔板、一薄膜電路板、一橡膠墊 板、- LED電路板以及若干按鍵，纟中：該間隔板係設置在 δ玄底板上方’且該間隔板相對應單一按鍵處係具有二第一樞接 部及二第一嵌接部，俾得以組裝相對應之單一按鍵；該薄膜電 路板係設置在制隔板上方，而該薄膜電路板騎對各該按鍵 的矩陣位置與功能而相對應傳輸不同的訊號；該橡膠墊板係設 置在該薄膜電路板上方，並具有若干彈性件，而各該彈性件係 相對應設置在相對應的其中之一該等按鍵下方，且該彈性件内 具有一按壓柱，該LED電路板係設置在該橡膠墊板上方，該 LED電路板上係設置若干發光二極體，於各該單一按鍵係相 對應設置有至少一發光二極體；該等按鍵係以矩陣排列而 設置在該LED電路板上方。 由於本創作的發光鍵盤改良結構係以疊置方式所構 成，而具有薄型化的優點；再者，本創作的發光鍵盤結 構係將LED電路板選擇設置在橡膠墊板之上方或下方位 置，且使發光二極體與橡膠墊板及薄膜電路板分離設置，因 此使LED電路板在發生其中有發光二極體有缺陷損壞時即 可單獨更換LED電路板或發光二極體，藉此以縮短工時、加 速產線工序及方便控制良率’藉此以降低製造成本及增進維修 效能者。 本創作上述之目的及優點，不難從下述所選用實施例之 6V. New description: [New technology field] This creation department has a variety of keyboards, especially the light-emitting keys. [Previous technology] According to the current pen _ computer and mobile phone devices, because of the functions of easy-to-follow and carry-over = document data and instant messaging, it is widely recognized and adopted by market players and users. The current notebook computer keyboard or mobile phone The buttons of the device are all based on the thin type of follow-up. The related notebook computer keyboard is mainly used for the reduction of the key between the keycap and the bottom plate of the word key, and the key of the mobile phone device is by thin-elasticity. The keyboard triggers the button dialing signal, but these thin pens have the advantages of ultra-thin size, light weight and precise operation. However, the keyboard itself does not provide auxiliary illumination. Structure. In addition, the keyboard can only be operated in a place with bright light, and cannot be operated in a dark place, resulting in inconvenience in its use in special occasions. Therefore, the applicant company has developed and applied for the patent of the light guide plate and backlight module (National Patent Certificate No.: M306689) of the illuminated keyboard. The patent case is mainly based on the light guide plate with a snap-fit structure for facilitating Directly assembling the bridging components, but there is no design to enhance the light guiding between the respective buttons and the LED light source spacing, so that the buttons farther away from the LED light source appear to have insufficient light transmission brightness, and the thin type of the conventional mobile phone device is also known. Although the button is made of LED light source, the button has a light-transmissive effect. However, since each button is also separated by a different distance from the LED light source, it may cause different light-transmitting brightness of each button, and even cause inconvenience in use. In addition, the existing illuminated keyboard system is provided with a light-emitting unit (such as a light-emitting diode LED) at the bottom of the keyboard unit of a keyboard, and the light-emitting unit is provided with a flexible circuit board layer on the bottom surface of a film layer, and is in a flexible circuit board layer. An aluminum plate layer is disposed on the bottom surface, and a backlight layer is disposed on the bottom surface of the aluminum plate layer; when the backlight layer emits light, the light is projected from the gap of the aluminum plate layer through the keys of the keyboard unit to make the keyboard light, so that the user can still be in a dark place. Easy to operate. However, in the conventional illuminated keyboard, the two soft layers (ie, the flexible circuit board layer and the backlight layer) are separated by a hard nameplate layer, and the thickness thereof cannot be further reduced in thickness, so that the thickness of the illuminated keyboard is only Limited to this limit, the thickness can no longer be reduced. In view of this, the creator of this case has been engaged in the manufacture and design of computer keyboards for many years, and actively researched and improved, and after many physical sample production and testing, and then specifically improved the above shortcomings of the keyboard, and finally completed the book. creation. [New content] Therefore, the purpose of the present invention is to solve the above problems and to provide a light-emitting keyboard structure in which a light-emitting diode is provided corresponding to each button and is thinned. The other purpose of this creation is to provide an improved structure of the illuminated keyboard, to speed up the production of the red sequence, to facilitate the control of the yield and the low manufacturing cost. M394522 Therefore, in order to achieve the above purpose, the present invention proposes an improved structure of an illuminated keyboard, which comprises a bottom plate, a partition plate, a film circuit board, a rubber backing plate, an LED circuit board and a plurality of buttons. The spacer plate is disposed above the δ 玄 floor, and the partition plate has two first pivoting portions and two first engaging portions corresponding to a single button, and the corresponding single button is assembled; the thin film circuit board is set Above the spacer, the film circuit board transmits different signals corresponding to the matrix position and function of each button; the rubber pad is disposed above the film circuit board and has a plurality of elastic members, and each The elastic member is correspondingly disposed under one of the corresponding buttons, and the elastic member has a pressing column therein, and the LED circuit board is disposed above the rubber pad, and the LED circuit board is provided with a plurality of The light-emitting diodes are provided with at least one light-emitting diode corresponding to each of the single button systems; the buttons are arranged in a matrix and arranged above the LED circuit board. Since the improved structure of the illuminated keyboard of the present invention is formed by stacking, it has the advantage of being thinned; further, the illuminated keyboard structure of the present invention sets the LED circuit board above or below the rubber pad, and Separating the light-emitting diode from the rubber backing plate and the thin-film circuit board, so that the LED circuit board can be individually replaced with the LED circuit board or the light-emitting diode when the light-emitting diode is damaged, thereby shortening Working hours, accelerating the production line process and facilitating the control of yields, thereby reducing manufacturing costs and improving maintenance efficiency. The above objects and advantages of the present invention are not difficult to be selected from the following examples.
r SI M394522 詳細說明與附圖中，獲得深入瞭解。 當然，本創作在某些另件上，或另件之安排上容許有所 不同’但所選用之實施例，則於本說明書中，予以詳細說明， 並於附圖中展示其構造。 【實施方式】 關於本創作藉以達到上述目的之技術手段，兹以下列實 施型態配合圖示於下文作詳細說明。 有關本創作發规纽良結構H施侧請參考圖 1至圖3所示，本麟的發光鍵盤結構1係包括-底板2、 - LED電路板3、-間隔板4、-薄膜電路板5、—橡膠塾板 6以及若干按鍵7。 底板2係可為防水材質，而間隔板4係設置在底板2上 方，間隔板4係可為鋁板材質或者是塑膠材質，且該間隔板4 相對應單一按鍵7處係具有二第一樞接部41及二第一嵌接部 42，俾得以組裝相對應之單一按鍵7。 薄膜電路板5係透光材質且其設置在間隔板4上方，並 具有一第二電路51及若干斷路點52，各斷路點52係相對應 設置在一按鍵7下方’而薄膜電路板5係針對每一按鍵7的矩 陣位置與功能而相對應傳輸不同的訊號；再者，在單一按鍵7 下，薄膜電路板5相對應間隔板4的二第一樞接部41及二第 一嵌接部42之位置，設置有貫孔53，以供相對應的第一枢接 部41及第一嵌接部42穿過。 rsi 橡膠塾板6係透光材狀其設置在_電路板5上方， 並具有若干件6卜而各雜件61餘簡設置在一按鍵 7下方’且-彈性件61 £相對應薄膜電路板5的一斷路點幻 設置，而在單-按鍵7下’橡板6姉朗隔板4的二第 拖接部41及二第-嵌接部42之位μ，以及相對應薄膜電路 板5的貝孔53之位置，係設置有相對應的透孔62，以供相對 應的第一樞接部41及第一嵌接部42穿經；另，彈性件61内 具有一按壓柱611，該按壓柱611係為按壓導通該薄膜電路板 5的斷路點52 (因其係屬習知構造，故不贅述）。 LED電路板3係設置在該橡膠塾板6上方，係包括一第 一電路31及若干LED發光二極體32，第一電路31係與一電 源(圖未示)電性連接，且各發光二極體32亦與第一電路31電 性連接，因此藉由電源提供電力給各發光二極體32以發光。 再者，相對於母一按鍵7的位置，係可相對應設置一個或一個 以上的發光二極體32，另，可在該發光二極體32的周圍選擇 設置一形如碗狀構造之聚光件元件（圖未示），或者是在該發 光二極體32的周圍佈設若干反光片35(如圖2所示），以提高 該發光二極體32的光線使用效率或者是增進其光線照射範 圍。而在單一按鍵7下，該LED電路板3相對應間隔板4的 二第一樞接部41及二第一嵌接部42之位置，以及相對應薄膜 電路板5的貫孔53之位置，係設置有相對應的透孔39，以供 相對應的第一抱接部41及第一嵌接部42穿經，且該LED電 M394522 路板3相對應該橡膠塾板6上之彈性件61位置，係設置有相 對應的圓孔37，以供相對應的彈性件61穿設組裝； 按鍵7係大致以矩陣排列而設置在led電路板3及橡膠 墊板6上方，且每一按鍵7係由一按鍵板71及一架橋72所構 成’架橋72係设置在LED電路板3上方，且架橋72之一 側上下部’係分別具有二滑轴721及一承接部722，各 架橋72之另一側上下部，係分別具有一樞軸723及一 導滑部724 ’且架橋72的中心部位係具有一穿孔725， 按鍵板71係設置在架橋72上方，且按鍵板7丨鄰近架 橋72的一側面係具有二第二樞接部711 '二第二嵌接 部712及支柱713，第二樞接部711與第二嵌接部712 係分別地相對應第一樞接部41與第一嵌接部42位置而 設置。 其中，架橋72的二滑轴721及承接部722係分別 地可轉動地嵌接在第二嵌接部712及第一嵌接部42， 而架橋72的樞軸723及導滑部724係分別地可轉動地 樞接在第二樞接部711及第一樞接部41，且按鍵板71 的支柱713係抵止在橡膠墊板6的彈性件61頂部。 因此，當使用者按下其中一按鍵7而進行一按壓動 作日可’藉由按鍵板71的支柱713壓下該彈性件61，使 彈性件61内的按壓柱611接觸薄膜電路板5的斷路點 52並將其按壓導通’且由於LED電路板3上的發光二 9 M394522 極體32係可使用不同電源提供電力，而使用者在欲進 行按壓按鍵7時，能獲得照明的效果。 有關本創作發光鍵盤改良結構之第二實施例則請參 考圖4至圖5所示，其與第一實施例之不同處係於將該 LED電路板3選擇設置在橡膠墊板6之下方及薄膜電路板5 上方位置，而該橡膠塾板6係透光材質且使發光二極體 32之光線能均勻穿透’另且於該橡膠墊板6對應各該發光 二極體32之位置係穿設有相對應的透孔67，以供相對應的發 光二極體32穿設組裝； 有關本創作發光鍵盤改良結構之第三實施例則請參 考圖6至圖7所示，其與第二實施例之不同處係於將該 LED電路板3選擇設置在薄膜電路板5之下方及間隔板4 之上方位置，而該橡膠墊板6及薄膜電路板5均係透光 材質且使發光二極體32之光線能均勻穿透，另且於該橡膠 墊板6及薄膜電路板5對應各該發光二極體32之位置係 分別穿設有相聽的透孔67、57，以供相對應的發光二極體 32穿設組裝者； 由於本創作的發光鍵盤結構丨，係以疊置方式所構 成’而具有薄型化的優.點；再者，本創作的發光鍵盤結 構1係將LED電路板3選擇設置在橡膠墊板6之上方或下 方位置，且使發光二極體32與橡膠墊板6及薄膜電路板5 分離設置，因此使LED電路板3在發生其中有發光二極體32 10 有缺陷損壞時，即可單獨更換LED 板3或發光二極體32, 而無需使整個_電路板5及橡膠墊板6作更換，藉此以縮 短工％、加速產線工序及方便控制良率，再者，對有缺陷之 LED電路板3進行維修時，無須因為如薄臈電路板5的複雜 線路而影料—發光二極體32的更換，並避免導致整個電路 板的毀損情形，藉此以降低製造成本及增進維修效能者。 以上所述實施型態之揭示係用以說明本創作，並非用以 限制本創作，故舉凡數值之變更或等效元狀置換仍應隸屬本 創作之範疇。 由以上詳細說明，可使熟知本項技藝者明瞭本創作的確 可達成前述目的，實已符合專利法之規定，爰提出專利申請。 【圖式簡單說明] 圖1 係表示本創作發光鍵盤改良結構第一實施例的分 解圖 圖2 係表示本創作圖1發光鍵盤改良結構相對應單 —按鍵之實施例的分解圖。 圖3 係表示圖2相對應單一按鍵的剖視圖。 圖4 係表示本創作發光鍵盤改良結構相對應單一按鍵 之第二實施例的分解圖。 圖5 係表示圖4相對應單一按鍵之實施例的剖視圖。 圖6 係表示本創作發光鍵盤改良結構相對應單一按鍵 之第三實施例的分解圖。 圖7 係表示圖6相對應單一按鍵之實施例的剖視圖。 M394522 【主要元件符號說明】r SI M394522 Detailed description and drawings for a deeper understanding. Of course, the present invention is tolerated on certain parts or arrangements of parts. However, the embodiments selected are described in detail in the present specification, and the construction thereof is shown in the drawings. [Embodiment] The technical means by which the present invention achieves the above object will be described in detail below with reference to the drawings. Referring to FIG. 1 to FIG. 3, the illuminating keyboard structure 1 of the present lining includes a bottom plate 2, an LED circuit board 3, a spacer board 4, and a thin film circuit board 5 - a rubber raft 6 and a number of buttons 7. The bottom plate 2 can be made of a waterproof material, and the partition plate 4 is disposed above the bottom plate 2. The partition plate 4 can be made of aluminum material or plastic material, and the partition plate 4 has two first pivotal links corresponding to a single button 7 The portion 41 and the two first engaging portions 42 are configured to assemble a corresponding single button 7. The thin film circuit board 5 is made of a light-transmitting material and is disposed above the partitioning plate 4, and has a second circuit 51 and a plurality of breaking points 52, and each of the breaking points 52 is correspondingly disposed under a button 7' and the thin film circuit board 5 is Corresponding to the matrix position and function of each button 7 correspondingly transmitting different signals; further, under a single button 7, the film circuit board 5 corresponds to the first first pivoting portion 41 of the spacer 4 and the second first engagement The position of the portion 42 is provided with a through hole 53 for the corresponding first pivoting portion 41 and the first engaging portion 42 to pass through. Rsi rubber raft plate 6 is a light-transmitting material which is arranged above the _ circuit board 5, and has a plurality of pieces 6 and each of the miscellaneous pieces 61 is simply disposed under a button 7' and the elastic member 61 £ corresponds to the film circuit board A disconnection point of 5 is set, and under the single-button 7 'the second tow portion 41 of the rubber panel 6 and the second-to-engagement portion 42, and the corresponding thin film circuit board 5 The position of the hole 53 is provided with a corresponding through hole 62 for the corresponding first pivoting portion 41 and the first engaging portion 42 to pass through; and the elastic member 61 has a pressing column 611 therein. The pressing post 611 is a pressing point 52 that presses the thin film circuit board 5 (it is not described here because it is a conventional structure). The LED circuit board 3 is disposed above the rubber rafter 6. The first circuit 31 is electrically connected to a power source (not shown) and is illuminated. The diode 32 is also electrically connected to the first circuit 31, so that power is supplied to the respective light-emitting diodes 32 by the power source to emit light. Furthermore, one or more light-emitting diodes 32 may be correspondingly disposed with respect to the position of the mother button 7 , and a shape of a bowl-like structure may be selectively disposed around the light-emitting diode 32. A light-emitting element (not shown) or a plurality of reflective sheets 35 (shown in FIG. 2) are disposed around the light-emitting diode 32 to improve the light-using efficiency of the light-emitting diode 32 or to enhance the light thereof. Irradiation range. Under the single button 7, the LED circuit board 3 corresponds to the positions of the two first pivoting portions 41 and the two first engaging portions 42 of the spacer 4, and the position of the through hole 53 corresponding to the thin film circuit board 5. Corresponding through holes 39 are provided for the corresponding first abutting portion 41 and the first engaging portion 42 to pass through, and the LED electric M394522 road plate 3 corresponds to the elastic member 61 on the rubber raft plate 6. The position is provided with a corresponding circular hole 37 for the corresponding elastic member 61 to be assembled; the buttons 7 are arranged substantially in a matrix and arranged above the LED circuit board 3 and the rubber backing plate 6, and each button 7 The bridge 72 is disposed above the LED circuit board 3, and the upper and lower sides of the bridge 72 respectively have two sliding shafts 721 and a receiving portion 722, and each of the bridges 72 The upper and lower sides of the other side respectively have a pivot 723 and a guiding portion 724', and the central portion of the bridge 72 has a through hole 725. The key plate 71 is disposed above the bridge 72, and the key plate 7 is adjacent to the bridge 72. One side has two second pivoting portions 711 'two second engaging portions 712 and pillars 713, the second pivot The connecting portion 711 and the second engaging portion 712 are respectively disposed corresponding to the positions of the first pivoting portion 41 and the first engaging portion 42. The two sliding shafts 721 and the receiving portion 722 of the bridge 72 are rotatably engaged with the second engaging portion 712 and the first engaging portion 42, respectively, and the pivot 723 and the guiding portion 724 of the bridge 72 are respectively The ground pivotally connects to the second pivoting portion 711 and the first pivoting portion 41, and the pillar 713 of the key sheet 71 abuts against the top of the elastic member 61 of the rubber pad 6. Therefore, when the user presses one of the buttons 7 to perform a pressing operation, the elastic member 61 can be pressed by the post 713 of the key sheet 71, so that the pressing post 611 in the elastic member 61 contacts the disconnection of the thin film circuit board 5. Point 52 is pressed and turned on' and because the light on the LED circuit board 3 is 9 M394522, the polar body 32 can provide power using different power sources, and the user can obtain the illumination effect when the button 7 is to be pressed. For a second embodiment of the improved structure of the present illuminated keyboard, please refer to FIG. 4 to FIG. 5 , which is different from the first embodiment in that the LED circuit board 3 is selectively disposed under the rubber pad 6 and The position of the thin film circuit board 5 is the light-transmitting material, and the light of the light-emitting diode 32 can be uniformly penetrated, and the position of the rubber-pad 6 corresponding to each of the light-emitting diodes 32 is The corresponding through hole 67 is provided for the corresponding light emitting diode 32 to be assembled; for the third embodiment of the improved structure of the present illuminated keyboard, please refer to FIG. 6 to FIG. The difference between the two embodiments is that the LED circuit board 3 is selectively disposed below the thin film circuit board 5 and above the partitioning plate 4, and the rubber backing plate 6 and the thin film circuit board 5 are both light-transmitting materials and light-emitting. The light of the diode 32 can be uniformly penetrated, and the positions of the rubber pad 6 and the thin film circuit board 5 corresponding to the light-emitting diodes 32 are respectively respectively provided with the through holes 67 and 57 for listening. Corresponding light-emitting diodes 32 are worn by the assembler; The embossed structure is formed in a stacked manner and has a thinner shape. Further, the illuminating keyboard structure 1 of the present invention selectively sets the LED circuit board 3 above or below the rubber backing plate 6, and The light emitting diode 32 is separated from the rubber backing plate 6 and the thin film circuit board 5, so that the LED circuit board 3 can be replaced with the LED board 3 or the light emitting unit 2 when the light emitting diode 32 10 is damaged. The electrode body 32 does not need to replace the entire circuit board 5 and the rubber backing plate 6, thereby shortening the work cost, accelerating the production line process, and conveniently controlling the yield, and further, repairing the defective LED circuit board 3 In this case, it is not necessary to replace the shadow-light-emitting diode 32 due to the complicated circuit such as the thin circuit board 5, and to avoid damage to the entire circuit board, thereby reducing the manufacturing cost and improving the maintenance efficiency. The above description of the embodiments is intended to illustrate the present invention and is not intended to limit the present invention, so any numerical changes or equivalent meta-replacements should still fall within the scope of this creation. From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objectives, and has been in compliance with the provisions of the Patent Law, and has filed a patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view showing a first embodiment of the improved structure of the present illuminated keyboard. Fig. 2 is an exploded view showing an embodiment of the improved structure of the illuminated keyboard of Fig. 1. Figure 3 is a cross-sectional view showing the corresponding single button of Figure 2. Figure 4 is an exploded view showing a second embodiment of the improved structure of the present illuminated illuminated keyboard corresponding to a single button. Figure 5 is a cross-sectional view showing the embodiment of Figure 4 corresponding to a single button. Fig. 6 is an exploded view showing a third embodiment of the improved structure of the present illuminating keyboard corresponding to a single button. Figure 7 is a cross-sectional view showing the embodiment of Figure 6 corresponding to a single button. M394522 [Main component symbol description]
1 發光鍵盤結構 2 底板 3 LED電路板 31 第一電路 32 發光二極體 33 聚光件 35 反光片 37 圓孔 39 透孔 4 間隔板 41 苐一樞接部 42 第一嵌接部 5 薄膜電路板 51 第二電路 52 斷路點 53 貫孔 57 透孔 6 橡膠墊板 61 彈性件 611 按壓柱 62 透孔 67 透孔 7 按鍵 71 按鍵板 711 弟二桓接部 12 M394522 712 第二嵌接部 713 支柱 72 架橋 721 滑軸 722 承接部 723 樞轴 724 導滑部 725 穿孔1 illuminating keyboard structure 2 bottom plate 3 LED circuit board 31 first circuit 32 light emitting diode 33 concentrating member 35 reflecting sheet 37 circular hole 39 through hole 4 spacer plate 41 枢 a pivoting portion 42 first engaging portion 5 thin film circuit Plate 51 Second circuit 52 Breaking point 53 Through hole 57 Through hole 6 Rubber backing plate 61 Elastic member 611 Pressing post 62 Through hole 67 Through hole 7 Button 71 Key plate 711 Younger joint 12 12 M394522 712 Second fitting 713 Pillar 72 Bridge 721 Sliding shaft 722 Receiving portion 723 Pivot 724 Guide sliding portion 725 Perforation