201013719 九、發明說明： 【發明所屬之技術領域】 '本發明涉及一種開關裝置，尤其涉及一種應用於可攜 ·*式電子裝置之開關裝置。 【先前技術】 近年來，隨著無線通信與資訊處理技術之發展，個人 電腦、行動電話、個人數位助理（Personal mgital Assistant， ❹PDj)等各類電子裝置競相湧現，令消費者可隨時隨地充 分享受高科技帶來之種種便利。同時，這些電子裝置之功 能，日趨多樣化，於實際應用中，電子裝置需要於不同之 功能模式之間進行切換，為了便於電子裝置於不同功能之 、行切換操作，這些電子裝置之周緣—般都設有開關装 置，以便於消費者使用。這些開關裝置大多屬於操作方便 =動開關，使用時，只需將其於不同位置間滑動即可分 別接通不同之電路，實現電子裝置不同功能之切換摔作。 ^而’為了於使用時減小摩擦以使滑動更加順暢習 γ動：關裝置與可搞式電子裝置配合往往設置之不 ^ ’二者之間可能存於較大之縫隙，外界之水八 、雜物會藉由該縫隙進入可檇式電 :尺 子褒置之音頻器件發出之聲音亦會從而且該電 造成聲音〜 、中4漏出去， 凡竿曰口口質較差，從而影響該 用性能。 柄八电千裝置之整體使 【發明内容】 有馨於此，有必要提供一錄谅：私叫^ 杈仏種在封性能較好之開關裝置。 201013719 一種開關裝置’其裝設於一電子裝置内。該開關裝置 包括一殼體、一形成於該殼體内之容置腔、一裝設于所述 〜容置腔内之滑鈕及一設於該滑鈕上之彈片。所述容置腔用 <於容置一印刷電路板於其内，所述印刷電路板設有與電子 裝置其他電路連接之複數金屬區，所述滑钮於所述彈片彈 力作用下抵持於所述殼體内側，於所述滑紐之帶動下滑動 所述彈片之一端可於其中一金屬區上滑動，而另一端可於 ❹其他金屬區之間滑動，並可選擇地抵持於所述其他金屬區 中之一個，從而使所述電子裝置處於不同之功能狀態。 相較於習知技術，所述開關裝置藉由滑鈕帶動彈片移 動實現切換不同電路之開關功能。於使用過程中，可以藉 由彈片之彈性作用力使得滑鈕平穩、緊密地抵持於機殼内 壁’具有較佳之密封效果，較好地實現了防止聲音洩漏和 外界灰塵、水分等雜物進入可檇式電子裝置内部之功能。 【實施方式】 ❿ 請參閱圖1，本發明之較佳實施例公開一種開關裝置 100,其適用於行動電話等可檇式電子裝置。該開關裝置 100包括一殼體（圖未標）、一彈片20及一設置於該殼體 上之滑紐 30。一印刷電路板（Printed Circuit B〇ard，PCB ) 40裝設於該殼體内，所述彈片2〇可沿該印刷電路板4〇滑 動。該印刷電路板40包括一板體41及設於所述板體41 上之一第一金屬區42、一第二金屬區43和一第三金屬區 44，所述第一金屬區42、第二金屬區43和第三金屬區44 月b夠與该可檇式電子裝置之其他電路電性連接。當第三金 7 201013719 屬區44與第一金屬42區電連接時，接通電子裝置之一種 功能電路，當第三金屬區44和第二金屬區43電連接時， •接通電子裝置之另一種功能電路。 . 所述殼體為可檇式電子裝置之機殼，其包括一第一殼 體11及一與該第一殼體11相配合之第二殼體13。所述第 一殼體11包括一第一側壁111、一開設於該第一側壁11 之第一開口 112、位於側壁111内側且分別設於該開口 112 兩側之二彎折部113、114，及一鄰近該二彎折部113、114 且遠離開口 112之一側設置之凸台115。所述二彎折部 113、114相背之一端分別垂直延伸有連接部1131、1141， 藉由連接部1131、1141與第一侧壁111連接。所述凸台 115與彎折部113及側壁111形成容置空間116，凸台115 與彎折部114及侧壁111形成容置空間117。 請一併參閱圖2、圖5、圖6及圖7,所述第二殼體13 包括一第二侧壁131、一開設於該側壁131上之第二開口 ❿132及一與所述第二側壁131 —體成型之止擋部134。所述 第二開口 132與第一開口 112相配合可形成一圓角矩形 孔，用以露出所述滑鈕30。所述止擋部134與所述第二側 壁131之内側形成一容置腔136。該止擋部134包括一與 所述第二侧壁131平行之擋板1341及二階梯部1343、 1345。所述擋板1341正對第二開口 132,其長度略小於所 述印刷電路板40之長度，可使該印刷電路板40抵持于該 容置腔136内靠近擋板1341處。所述二階梯部1343、1345 從擋板1341兩端垂直延伸出來，且分別連接到第二側壁 201013719 .131内側臨近第一開σ 132之兩端之位置。所述容置腔136 底部靠近第二側壁131處開設有二限位槽ι36ΐ、m2,該 -限位槽1361、1362之間之距離與所述第一金眉區42和 .第二金屬區43之間之中心距離大致相等。 、所述彈片20由不銹鋼、鈹銅等具有彈性之導電材料製 成’其整體大致為狐形片狀。該彈片2〇包括一矩形本體 21、一設於該本體21中部之通孔22、設於該本體21中部 ❹，緣處之二半圓形缺σ 23、24及延伸出該本體21之彈性 # 25 26、27、28。所述彈性臂25、26、27、28大致為 弧形其中彈性臂25、27與彈性臂％、Μ對稱設於本體 21兩側’使彈性臂25、26、27、28與印刷電路板40接處 時彈力分佈更均句。所述彈性臂25、26、27、28之端部分 別凸設有彈觸凸起251、261、271、281，其中，彈觸凸起 =51 271可沿所述第三金屬區44滑動彈觸凸起2^、281 可於所述第-金屬區42和第二金屬區43之間滑動。當彈 ❿片20連接第一金屬區42和第三金屬區時，接通電子裝 置之-種功能電路，當彈片2〇連接第二金屬區“和第三 金屬區44時，接通電子裝置之另一種功能電路，從而實現 電子裝置之功能切換。 所述滑鈕30由雙射成型技術製成，其包括一按壓部 31 一设置於該按壓部31 一侧之凸柱32、設於該凸柱32 兩”之一擋壁33、34、及一設置於所述按壓部Μ另一侧 =操作部35。所述按壓部31大致呈矩形板狀，其兩端可 各置於二階梯部1343、1345和第二側壁131之間，該按壓 9 201013719 部31包括一按壓體311及一延伸於所述按壓體311長邊上 之彈性件312，所述按壓體311大致為圓角矩形體。所述 -彈性件312由具有彈性之材料（比如，聚碳酸酯等）製成， t其中部背離按壓體311之方向凸設有一半圓形凸起3124， 該半圓形凸起3124可容置於所述限位槽1361或1362内， 並藉由彈性件312之彈性形變於二限位元槽1361、1362 之間來回移動。 ❿ 所述凸柱32設置於按壓部31之中間位置，其可穿過 所述彈片20之通孔22 ’並將彈片2〇固定（比如，熱熔等） 於該凸柱32。所述二擋壁33、34與凸柱32位於按壓部31 之同一側，且s亥二擋壁33、34凸設於按壓部31中部邊緣 處。該二擋壁33、34之中部朝向所述凸柱32處設有凸塊 331、341，該凸塊331、341之形狀與所述二半圓形缺口 23、24相配合，且可卡持於該二半圓形缺口 23、24，用於 防止彈片20移動，以便進一步固定該彈片2〇。所述操作 ❹部35大致呈圓角矩形狀，其由若干凸棱組成，其上表面大 致為波浪狀，用於推動按壓部31時增加摩擦力。該操作部 35可谷置於第一開口 112與第二開口 132形成之圓角矩形 孔’並於該圓角矩形孔内滑動。 請參閱圖1及圖2，組裝該開關裝置1〇〇時，首先， 將印刷電路板40置於所述容置腔136内，並使印刷電路板 40有金屬區之表面背對擋板1341。此時，該印刷電路板 40之兩、文到二階梯部1343、1345之抵持，該印刷電路 板40固置於邊容置腔136内。然後，將滑鈕之凸柱 201013719 穿過所述彈片20之通孔22,並使該滑鈕3〇之二凸塊331、 341裝設於該彈片20之二半圓形缺口 23、24内，從而將 -彈片20固定於滑鈕30。之後，朝向印刷電路板4〇之方向 t按壓滑钮30之操作部35 ’使彈片20之彈性臂25、26、27、 28抵持印刷電路板40。此時，彈觸凸起251、271抵持第 三金屬區44，彈觸凸起261、281抵持第一金屬區42。推 動操作部35並帶動彈片2〇 一起向容置腔136底部滑動， ❹當所述彈性件312之半®形凸起3124被限位槽1361所阻 擋時，該滑鈕30即停止滑動。此時，彈片2〇之彈性臂25、 26、27、28因發生彈性形變而彈性抵持於印刷電路板， 滑钮30之按壓部31之兩端部分容置於二階梯部1343、 1345和第一側壁131之間，且按壓部3ι因彈片之反作 用力而抵持於第一側壁131内侧，滑包之操作部％露 出第二開口 132。 凊一併參閱圖3,將所述第一殼體^裝配於第二殼體 ❿13:形成該可檇式電子裝置之機殼。此時，第一開口 112 八第一開口 132相配合形成圓角矩形開孔，滑鈕3〇位於該 電子裝置之第I位置，該操作部35置於該圓角矩形開孔。 滑紐3〇之按壓部31兩端部分容置於二f折部113、114, 並抵持於第-殼體U之第—側壁m内側。彈# π之二 彈觸凸起251、271抵持第三金屬區44，另二彈觸凸起加、 抵持第|屬區42。此時彈性件扣之半圓形凸起 楚於限位槽1361内，彈片20連通第—金屬區42和 、屬區44 ’接通電子I置之功能電路，可以使電子裝 11 201013719 • 置進入一種工作模式。 凊一併參閱圖4，當需要拉士 # ? + 田萬要藉由该開關裝置100切換電201013719 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a switching device, and more particularly to a switching device applied to a portable electronic device. [Prior Art] In recent years, with the development of wireless communication and information processing technology, various electronic devices such as personal computers, mobile phones, personal digital assistants (❹PDj) have emerged, allowing consumers to fully enjoy anywhere, anytime. The convenience brought by high technology. At the same time, the functions of these electronic devices are increasingly diversified. In practical applications, electronic devices need to be switched between different functional modes. In order to facilitate the switching operation of electronic devices in different functions, the periphery of these electronic devices is generally All have switching devices for consumer use. Most of these switching devices are easy to operate. = When the switch is used, it is only necessary to slide it between different positions to switch on different circuits to realize the switching of different functions of the electronic device. ^ and 'in order to reduce the friction during use to make the sliding more smooth γ: the closing device and the engageable electronic device are often set up not ^ 'There may be a gap between the two, the outside water eight The debris will enter the portable electric system through the gap: the sound emitted by the audio device of the ruler will also cause the sound to be heard from the electricity and the medium 4, and the mouth is poor, which affects the use. performance. The whole body of the handle eight electric device [invention content] There is a need to provide a record of forgiveness: privately called ^ a kind of switch device with better sealing performance. 201013719 A switching device 'installed in an electronic device. The switch device includes a housing, a receiving cavity formed in the housing, a slider mounted in the receiving cavity, and a spring piece disposed on the sliding button. The accommodating cavity is configured to receive a printed circuit board therein, and the printed circuit board is provided with a plurality of metal regions connected to other circuits of the electronic device, and the slider is resisted by the elastic force of the elastic piece On the inner side of the casing, one end of the elastic piece sliding under the sliding of the sliding member can slide on one of the metal regions, and the other end can slide between the other metal regions, and can be selectively resisted One of the other metal regions, thereby causing the electronic device to be in a different functional state. Compared with the prior art, the switch device realizes switching function of switching different circuits by sliding the slider to move the spring. During use, the elastic force of the elastic piece can make the sliding button smoothly and tightly resist the inner wall of the casing, which has better sealing effect, and better prevents sound leakage and foreign matter such as dust and moisture from entering. The function inside the portable electronic device. [Embodiment] Referring to Figure 1, a preferred embodiment of the present invention discloses a switching device 100 suitable for use in a portable electronic device such as a mobile phone. The switch device 100 includes a housing (not shown), a spring 20 and a slider 30 disposed on the housing. A printed circuit board (PCB) 40 is mounted in the housing, and the spring 2 is slidable along the printed circuit board 4. The printed circuit board 40 includes a board body 41 and a first metal region 42 , a second metal region 43 and a third metal region 44 disposed on the board body 41 . The first metal region 42 , The two metal regions 43 and the third metal region 44 are electrically connected to other circuits of the portable electronic device. When the third gold 7 201013719 genus 44 is electrically connected to the first metal 42 region, a functional circuit of the electronic device is turned on, when the third metal region 44 and the second metal region 43 are electrically connected, • the electronic device is turned on Another functional circuit. The housing is a casing of a squeezable electronic device, and includes a first housing 11 and a second housing 13 mated with the first housing 11. The first housing 11 includes a first sidewall 111, a first opening 112 formed in the first sidewall 11, and two bent portions 113 and 114 disposed on the inner side of the sidewall 111 and respectively disposed on opposite sides of the opening 112. And a boss 115 disposed adjacent to the two bent portions 113, 114 and away from one side of the opening 112. One end of each of the two bent portions 113 and 114 vertically extends with a connecting portion 1131, 1141, and is connected to the first side wall 111 by a connecting portion 1131, 1141. The boss 115 and the bent portion 113 and the side wall 111 form an accommodating space 116. The boss 115 and the bent portion 114 and the side wall 111 form an accommodating space 117. Referring to FIG. 2, FIG. 5, FIG. 6 and FIG. 7, the second housing 13 includes a second sidewall 131, a second opening 132 and a second opening on the sidewall 131. The side wall 131 is a body-formed stop portion 134. The second opening 132 cooperates with the first opening 112 to form a rounded rectangular hole for exposing the slider 30. The receiving portion 134 and the inner side of the second side wall 131 form an accommodating cavity 136. The stopping portion 134 includes a baffle 1341 and two step portions 1343 and 1345 parallel to the second side wall 131. The baffle 1341 is opposite to the second opening 132 and has a length slightly smaller than the length of the printed circuit board 40. The printed circuit board 40 can be held in the accommodating cavity 136 near the baffle 1341. The two stepped portions 1343 and 1345 extend perpendicularly from both ends of the baffle 1341 and are respectively connected to the positions of the two ends of the first open σ 132 adjacent to the second side wall 201013719 . The bottom of the accommodating cavity 136 is adjacent to the second sidewall 131 and defines two limiting slots ι36 ΐ, m2, and the distance between the limiting slots 1361, 1362 and the first metal eyebrow region 42 and the second metal region The center distance between 43 is approximately equal. The elastic piece 20 is made of an elastic conductive material such as stainless steel or beryllium copper. The entirety thereof is substantially a fox-shaped sheet. The elastic piece 2 includes a rectangular body 21, a through hole 22 disposed in a middle portion of the body 21, a second semicircular defect σ 23, 24 disposed at a middle portion of the body 21, and an elasticity extending from the body 21. # 25 26, 27, 28. The elastic arms 25, 26, 27, 28 are substantially curved, wherein the elastic arms 25, 27 and the elastic arms %, Μ are symmetrically disposed on both sides of the body 21 'to make the elastic arms 25, 26, 27, 28 and the printed circuit board 40 When the joint is connected, the elastic force distribution is more uniform. The end portions of the elastic arms 25, 26, 27, 28 are respectively provided with elastic contact protrusions 251, 261, 271, 281, wherein the elastic contact protrusions = 51 271 can slide along the third metal area 44 The contact bumps 2^, 281 are slidable between the first metal region 42 and the second metal region 43. When the elastic piece 20 is connected to the first metal region 42 and the third metal region, the functional circuit of the electronic device is turned on, and when the elastic piece 2 is connected to the second metal region "and the third metal region 44, the electronic device is turned on" The other function circuit is used to realize the function switching of the electronic device. The slider 30 is formed by a two-shot molding technique, and includes a pressing portion 31, a protruding post 32 disposed on one side of the pressing portion 31, and One of the two walls ribs 33, 34 of the stud 32 is disposed on the other side of the pressing portion = = the operating portion 35. The pressing portion 31 has a substantially rectangular plate shape, and both ends of the pressing portion 31 are respectively disposed between the two stepped portions 1343 and 1345 and the second side wall 131. The pressing portion 9 201013719 includes a pressing body 311 and an extension extending from the pressing portion. The elastic member 312 on the long side of the body 311, the pressing body 311 is substantially a rounded rectangular body. The elastic member 312 is made of a material having elasticity (for example, polycarbonate or the like), and a portion of the middle portion facing away from the pressing body 311 is convexly provided with a semicircular protrusion 3124, and the semicircular protrusion 3124 can accommodate It is placed in the limiting slot 1361 or 1362 and moves back and forth between the two limiting slotes 1361, 1362 by the elastic deformation of the elastic member 312. The protrusion 32 is disposed at a middle position of the pressing portion 31, and can pass through the through hole 22' of the elastic piece 20 and fix the elastic piece 2 (for example, heat fusion or the like) to the protruding post 32. The second retaining walls 33, 34 and the stud 32 are located on the same side of the pressing portion 31, and the second retaining walls 33, 34 are protruded from the central edge of the pressing portion 31. The middle portions of the second blocking walls 33 and 34 are provided with the protrusions 331 and 341 toward the protrusions 32. The shapes of the protrusions 331 and 341 are matched with the two semicircular notches 23 and 24, and can be clamped. The two semicircular notches 23, 24 are used to prevent the elastic piece 20 from moving to further fix the elastic piece 2''. The operation flange portion 35 is substantially in the shape of a rounded rectangle, and is composed of a plurality of ribs, the upper surface of which is substantially wavy, and the frictional force is increased when the pressing portion 31 is pushed. The operating portion 35 can be placed in the rounded rectangular hole formed by the first opening 112 and the second opening 132 and slides in the rounded rectangular hole. Referring to FIG. 1 and FIG. 2, when the switch device 1 is assembled, first, the printed circuit board 40 is placed in the accommodating cavity 136, and the surface of the printed circuit board 40 having the metal region is opposite to the baffle 1341. . At this time, the two of the printed circuit board 40 are resisted by the two step portions 1343 and 1345, and the printed circuit board 40 is fixed in the side receiving cavity 136. Then, the tabs 201013719 of the slider are passed through the through holes 22 of the elastic piece 20, and the two tabs 331 and 341 of the slider 3 are mounted in the two semicircular notches 23 and 24 of the elastic piece 20. Thereby, the elastic piece 20 is fixed to the slider 30. Thereafter, the operation portion 35' of the slider 30 is pressed toward the direction of the printed circuit board 4 to cause the elastic arms 25, 26, 27, 28 of the elastic piece 20 to abut against the printed circuit board 40. At this time, the latching projections 251, 271 abut against the third metal region 44, and the latching projections 261, 281 abut against the first metal region 42. The operating portion 35 is pushed to drive the elastic piece 2 一起 to slide toward the bottom of the accommodating cavity 136. When the half-shaped protrusion 3124 of the elastic member 312 is blocked by the limiting groove 1361, the sliding button 30 stops sliding. At this time, the elastic arms 25, 26, 27, 28 of the elastic piece 2 are elastically resisted by the elastic deformation of the printed circuit board, and the two end portions of the pressing portion 31 of the slider 30 are accommodated in the two step portions 1343, 1345 and Between the first side walls 131, the pressing portion 3ι is abutted against the inner side of the first side wall 131 by the reaction force of the elastic piece, and the operation portion of the sliding bag exposes the second opening 132. Referring to Figure 3, the first housing is assembled to the second housing 13 to form the housing of the portable electronic device. At this time, the first opening 112 and the first opening 132 cooperate to form a rounded rectangular opening, and the slider 3 is located at the first position of the electronic device, and the operating portion 35 is placed in the rounded rectangular opening. The two ends of the pressing portion 31 of the slider 3 are accommodated in the two f-fold portions 113, 114 and are held inside the first side wall m of the first housing U. The second ejector protrusions 251, 271 abut against the third metal region 44, and the other two ejector bumps are applied to the first genus region 42. At this time, the semicircular protrusion of the elastic member buckle is in the limiting groove 1361, and the elastic piece 20 communicates with the first metal region 42 and the functional region of the electronic region I to turn on the electronic I, so that the electronic device can be placed. Enter a working mode. Referring to Figure 4 together, when it is necessary to switch to the switch device 100, it is necessary to switch the battery.
’子裝置之功能b ’首先，按壓滑K 月無30之操作部35使彈片 t 20之彈性臂25、26、27、28發★骚从， 發生彈性形變，按壓部31脫 邱t n壁备111和第二側壁131之抵持。然後，推動操作 圓角矩形開孔之長邊向圖中所示電子裝置第…立 置滑動’滑紐30之彈性件312發生彈性形變，其半圓形凸 ©起3124從限位槽1361内移出，且該操作部35帶動彈片 20 —起滑動，二彈觸凸起251、271沿第三金屬區44滑動。 當滑鈕30滑動至圖中所示之第„位置時，彈性件312恢 復彈性形變，其半圓形凸起3124位於限位槽1362内，彈 片20之二彈觸凸起261、281抵持于第二金屬區43,另二 彈觸凸起251、271仍抵持于第三金屬區44。此時，彈片 20接通第二金屬區43和第三金屬區44，接通電子裝置之 另一功能電路，使電子裝置切換至另一工作模式，即完成 ❹了該開關裝置100之切換。 可以理解，所述設於按壓部31 —侧之凸柱32之形狀 與所述通孔22之形狀相配合，只要該凸柱32可以無阻礙 地穿過所述通孔22即可。 可以理解，所述設於本體21中部邊緣處之二缺口 23、 24不限於半圓形，亦可以為矩形、菱形或其他形狀。所述 設於二擋壁33、34之中部之二凸塊331、341與所述而缺 口 23、24之形狀相配合，只要該二凸塊331、341可無阻 礙地卡持於所述缺口 23、24即可。 12 201013719 可以理解，該開關裝置 +限於兩檔位元開關功 能，當印刷電路板40增加其他金屬區時，相應地增加其他 之限位槽’即可配合凸起3124實現多檔位元開關功能、。 顯然，由於彈片20採用對稱分佈之四個弧形金屬彈性 臂25、26、27、28，故彈片20之應力分佈均勻實現彈 片20與印刷電路板40接觸之可靠性。此外，由於彈片2〇 之彈性作用力，使得滑紐3G之按㈣31平穩緊密抵持於 機殼内壁，可較好地防止聲音$漏和外界灰塵、水分等雜 物進入可檇式電子裝置内部。 ” 綜上所述，本發明符合發明專利要件，爰依法提出專 利申叫淮以上所述者僅為本發明之較佳實施例，本發 月之範圍並不以上述實施例為限，舉凡熟悉本案技藝之人 士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於 以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明較佳實施例開關裝置和印刷電路板之立 體分解示意圖。 圖2係圖1所示開關裝置和印刷電路板另一視角之立 體分解示意圖。 圖3係本發明較佳實施例開關裝置組裝後位於可攜式 電子裝置之狀態示意圖。 圖4係本發明較佳實施例開關裝置組裝後位於可攜式 電子裝置之另一狀態示意圖。 圖5係圖3沿v線之剖視圖。 13 201013719 圖6係圖4沿VI線之剖視圖。 圖7係圖3沿VII線之剖視圖。 -【主要元件符號說明】 開關裝置 100 第一殼體 11 第一側壁 111 第一開口 112 彎折部 113 、 114 連接部 1131 、 1141 凸台 115 容置空間 116 、 117 ❹ 第二殼體 13 第二側壁 131 第二開口 132 止擋部 134 擋板 1341 階梯部 1343 、 1345 容置腔 136 限位槽 1361 、 1362 彈片 20 本體 21 圓形通孔 22 缺口 23、24 彈性臂 25 ' 26 、 彈出凸起 251 、 261 ❿ 滑紐 27 ' 28 30 按壓部 271 、 281 31 按壓體 311 彈性件 312 凸起 3124 圓形凸柱 32 擋壁 33、34 凸塊 331 、 341 操作部 35 印刷電路板 40 板體 41 第一金屬區 42 第二金屬區 43 第三金屬區 44 14'Function b of the sub-device' First, the operation unit 35 that presses the K-month without 30 causes the elastic arms 25, 26, 27, and 28 of the elastic piece t 20 to be elastically deformed, and the pressing portion 31 is removed from the wall. 111 and the second side wall 131 are resisted. Then, the long side of the rounded rectangular opening is pushed to elastically deform the elastic member 312 of the sliding device 30 of the electronic device shown in the figure, and the semicircular convex portion 3124 is from the limiting groove 1361. The operation portion 35 drives the elastic piece 20 to slide together, and the two elastic contact protrusions 251 and 271 slide along the third metal region 44. When the slider 30 slides to the „ position shown in the figure, the elastic member 312 recovers elastic deformation, and the semicircular protrusion 3124 is located in the limiting groove 1362, and the two elastic protrusions 261 and 281 of the elastic piece 20 resist. In the second metal region 43, the other projecting protrusions 251, 271 still resist the third metal region 44. At this time, the elastic piece 20 turns on the second metal region 43 and the third metal region 44 to turn on the electronic device. The other function circuit switches the electronic device to another working mode, that is, the switching of the switching device 100 is completed. It can be understood that the shape of the protruding post 32 disposed on the side of the pressing portion 31 and the through hole 22 The shape is matched as long as the protrusion 32 can pass through the through hole 22 without hindrance. It can be understood that the two notches 23, 24 provided at the central edge of the body 21 are not limited to a semicircle, and may be Rectangular, diamond-shaped or other shape. The two protrusions 331, 341 disposed in the middle of the second retaining walls 33, 34 cooperate with the shapes of the notches 23, 24 as long as the two bumps 331, 341 are absent. It can be blocked by the notches 23 and 24. 12 201013719 It can be understood that the switch device + limit In the two-position bit switch function, when the printed circuit board 40 is added with other metal regions, the other limit slots are correspondingly added, so that the multi-position bit switch function can be realized by the protrusion 3124. Obviously, since the elastic piece 20 adopts symmetry The four curved metal elastic arms 25, 26, 27, 28 are distributed, so that the stress distribution of the elastic piece 20 uniformly achieves the reliability of the contact between the elastic piece 20 and the printed circuit board 40. In addition, due to the elastic force of the elastic piece 2, the sliding force is made. The button of the New 3G (4) 31 smoothly and tightly resists the inner wall of the casing, which can better prevent the sound leakage and external dust, moisture and other debris from entering the interior of the portable electronic device." In summary, the invention complies with the invention patent requirements The above is only a preferred embodiment of the present invention. The scope of the present month is not limited to the above embodiments, and those skilled in the art will be assisted by the spirit of the present invention. Equivalent modifications or variations are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic exploded view of a switching device and a printed circuit board in accordance with a preferred embodiment of the present invention. Fig. 2 is a schematic exploded perspective view showing the switching device and the printed circuit board of Fig. 1 from another perspective. 3 is a schematic view showing the state of the portable electronic device after the switch device is assembled according to the preferred embodiment of the present invention. 4 is a schematic view showing another state of the portable electronic device after the switch device is assembled according to the preferred embodiment of the present invention. Figure 5 is a cross-sectional view along line v of Figure 3. 13 201013719 Figure 6 is a cross-sectional view taken along line VI of Figure 4. Figure 7 is a cross-sectional view taken along line VII of Figure 3. - [Description of main component symbols] Switching device 100 First housing 11 First side wall 111 First opening 112 Bending portion 113, 114 Connecting portion 1131, 1141 Boss 115 accommodating space 116, 117 ❹ Second housing 13 Two side walls 131 second opening 132 stop portion 134 baffle 1341 step portion 1343, 1345 accommodating cavity 136 limit groove 1361, 1362 spring 20 body 21 circular through hole 22 notch 23, 24 elastic arm 25 ' 26 , pop convex 251, 261 滑 Slide 27 ' 28 30 Pressing portion 271, 281 31 Pressing body 311 Elastic member 312 Raised 3124 Round stud 32 Barrier 33, 34 Bump 331 , 341 Operating portion 35 Printed circuit board 40 Plate 41 first metal region 42 second metal region 43 third metal region 44 14