201002086 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種電子裝置之音箱結構 【先前技術】 電子裝置中，攜帶有音箱結構之電子 以滿足消費者對外音播放功能 ：：見， 刀此之要求。該種音箱結構都包 括有-％聲器，揚聲器安裳於殼體上之_容室+， 路板抵持該容室之開口 ’揚聲器之散音面與殼體及容室側 壁形成-前音室，揚聲器之背面與電路板及容室侧壁形成 :後音室。該前音室及後音室之氣密性構成揚聲器出音質 量之重f因素。由於該種音箱結構通過塑性殼體之間之配 合形成前、後音室，由於塑性部件不具彈性，各部件之間 之配δ氣雄、性較差，如此對前、後音室之氣密性之不夠理 想。揚聲器發聲時，前、後音室易發生漏音或破音現象， 從而使得音負效果不好。另外，習知音箱結構在設計變更 時，一般通過修改殼體之容室結構來適合音箱部件之裝 配，該種音箱結構易造成殼體之浪費。 【發明内容】 馨於上述内容’有必要提供一種氣密性好之電子裝置 之音箱結構。 種電子裝置之音箱結構’包括·一殼體、一前橡膠件、 揚聲器、一後橡膠件及一電路板，所述殼體上具有一收 容腔’所述前橡膠件與後橡膠件夾持所述揚聲器收容於所 述殼體之收容腔内且所述電路板封蓋所述收容腔，所述前 橡膠件與揚聲器一面形成一前音室，且該前橡膠件與殼體 201002086 配合’所述後橡膠件與揚聲器一面及電路板形成一後音 室，且該後橡膠件與電路板抵持。 曰 相較於習知電子裝置之音箱結構，本發明藉由採用一 前橡膠件與揚聲器形成一前音室，且前橡膠件與揚聲器配 合，前音室氣密性好，避免了通過揚聲器直接與殼體配合 而形成易漏音前音室；通過採用一後橡膠件與揚聲器及電 路板形成一後音室，且後橡膠件與電路板配合，後音室氣 密性好。如此，可使電子裴置之音箱結構氣密性好。 【實施方式】 請參閱圖1 ’本發明較佳實施例一電子裝置（如行動 電話等）之音箱結構100包括一殼體10、一前橡膠件2〇、 一揚聲器30、一後橡膠件40及一電路板50。 請參閱圖2,所述殼體1〇 —端開設有一收容腔12，形 成於殼體ίο之内表面上，呈方形框結構。該收容腔12為 一第一底壁14及第一週壁16所圍成。該第一底壁14上開 ί設有一出音孔142，該出音孔142之孔壁上形成有之凸緣 144 ’該凸緣144用於與所述前橡膠件20卡合。所述第一 週壁16由形狀不規則之侧壁彼此連接圍成，且環繞所述出 音孔142。該第一週壁16之頂部具有形狀不規則之配合面 162 ’該配合面162用於與後橡膠件4〇相配合。 所述前橡膠件20大致呈一框體結構，用於與所述出音 孔142配合，其具有一凹陷空間22，圍成該凹陷空間 之一第二底壁24及第二週壁26。所述第二底壁24上開設 有呈方形孔結構之散音孔242。本實施例中，該凹陷空 6 201002086 間22之底部還設有一較薄之篩網28,該篩網28遮蓋所述 散音孔242。所述第二週壁26之外侧開設有一環形凹槽 262,該環形凹槽262用於與所述出音孔142之孔壁上之凸 緣144配合。 所述揚聲器30呈方形體結構，其包括一散音面32及 一電連接面34，所述揚聲器3〇發出聲音通過該散音面％ 散出’該散音面32用於與前橡膠件2〇配合。所述電連接 面34上形成有二電連接端子342，該二電連接端子342用 於與電路板50上之電路電連接。 所述後橡膠件40大致呈四邊形框架結構，其具有一容 置二間42及圍成該容置空間42之第三週壁44。所述第三 週壁44由四形狀不規則之側壁彼此連接圍成四邊形框，該 第二週壁44包括一第一端緣442及一第二端緣444，該第 一端緣442之表面之形狀對應所述殼體10之第一週壁16 配&面162之形狀’以與該第一週壁16之配合面162 ^配合。所述第二端緣444為平面，該第二端緣4料用於 :、斤述電路板50表面相配合。該第三週壁44之内侧形成 複數凸起446,該複數凸起446構成該容置空間42之卡 、緣及複數凸起446與所述第三週壁44限定所述容置空 曰42，以容置所述揚聲器3〇於其内。 點52所電路板5〇為一平面板結構，其上形成有二電連接 φ ± “ 一電連接點52用於揚聲器30之二電連接端子342 電連接。 °月f閱圖3及圖4’組裝所述電子襞置之音箱結構100 201002086 時，首先將所述前橡膠件20置入所述殼體10之收容腔12 内，且第一底壁14之出音孔142之凸緣144與前橡膠件 20之第二週壁26之環形凹槽262相卡合。 然後，將揚聲器30之散音面32緊貼所述前橡膠件20 之橡膠週壁22之表面，且該散音面32與該前橡膠件20 之凹陷空間22形成一前音室320。由於前橡膠件20為橡 膠材質具有一定之彈性，該前橡膠件20與揚聲器30散音 面32配合，達到之氣密性效果好，即前音室320對揚聲器 30所起到之出音效果更理想。 接著將所述後橡膠件40與所述殼體10之收容腔12 相配合，所述後橡膠件40之第三週壁44之第一端緣442 與所述殼體10之第一週壁16之配合面162相配合，且所 述揚聲器30容置於該後橡膠件40之容置空間42内，同 時，後橡膠件40之複數凸起446支撐所述揚聲器30之電 連接面34以使揚聲器30安裝穩固。最後組裝所述電路板 50，電路板50抵持所述後橡膠件40之第三週壁44，即所 述電路板50表面與該後橡膠件40之第二端緣444相配 合。所述後橡膠件40之第三週壁44與揚聲器30之電連接 面34及電路板50形成一後音室340。由於後橡膠件40為 橡膠材質具有一定之彈性，該第二端緣444與電路板50 表面及揚聲器30之配合氣密性好，即後音室340之氣密性 好。 揚聲器30散音時，聲音通過所述前橡膠件20内之篩 網28、散音孔242及殼體10上之出音孔142傳到外界， 201002086 該種音箱結構⑽+，前音室伽及後音室_之氣密性 好’不會發生漏音’從而可獲得較佳之音質效果。另外， 所述前音室320與後音室34〇之尺寸需要可根據電子裝置 之設計需要而進行修改前橡膠件2Q或後橡膠件％之尺 寸’相較於修改殼體1G之收容腔12來適合音箱 加方便。 ,可以理解，所述篩網28可以用其他物質代替，如泡棉 等。 可以理解，所述篩網28可以省略，所述揚聲器3〇散 音時，聲音直接從散音孔242及殼體1〇上之出音孔142 傳到外界。 【圖式簡單說明】 圖1係本發明較佳實施例電子裝置之揚聲器裝置纟士 第一視角分解示意圖； ° 圖2係係本發明較佳實施例電子裝置之揚聲器艘置結 ( 構第二視角分解示意圖； 圖3係本發明較佳實施例電子裝置之揚聲器筆 裝配後之整體示意圖； 、°構 圖4係本發明較佳實施例沿圖3之m-m方向 圖。 【主要元件符號說明】 音箱結構 100 篩網 28 毂體 10 揚聲器 30 收容腔 12 散音面 32 之剖示 201002086 第一底壁 出音孔 凸緣 第一週壁 配合面 前橡膠件 凹陷空間 第二底壁 散音孔 第二週壁 環形凹槽 前音室 320 電連接面 34 後音室 340 電連接端子 342 後橡膠件 40 容置空間 42 第三週壁 44 第一端緣 442 第二端緣 444 凸起 446 電路板 50 10201002086 IX. Description of the Invention: [Technical Field] The present invention relates to a speaker structure of an electronic device. [Prior Art] In an electronic device, an electronic device carrying a speaker structure is provided to satisfy a consumer's external sound playback function: see, knife This requirement. The speaker structure includes a -% sounder, the speaker is mounted on the housing - the chamber +, the road plate resists the opening of the chamber - the sound surface of the speaker is formed with the housing and the side wall of the chamber - before The sound chamber, the back of the speaker is formed with the circuit board and the side wall of the chamber: the rear sound chamber. The airtightness of the front and rear chambers constitutes the weight factor of the loudspeaker sound quality. Since the speaker structure forms the front and rear sound chambers through the cooperation between the plastic shells, since the plastic parts are not elastic, the δ stagnation between the parts is poor, so that the airtightness of the front and rear sound chambers is so Not ideal enough. When the speaker sounds, the front and rear sound chambers are prone to sound leakage or broken sound, which makes the sound negative effect not good. In addition, the conventional speaker structure is generally adapted to the assembly of the speaker components by modifying the housing structure of the housing when the design is changed, and the speaker structure is liable to cause waste of the housing. SUMMARY OF THE INVENTION It is necessary to provide a speaker structure of an electronic device having good airtightness. The speaker structure of the electronic device includes a casing, a front rubber member, a speaker, a rear rubber member and a circuit board, and the casing has a receiving cavity. The front rubber member and the rear rubber member are clamped. The speaker is received in the receiving cavity of the housing, and the circuit board covers the receiving cavity. The front rubber member and the speaker form a front sound chamber, and the front rubber member cooperates with the housing 201002086. The rear rubber member forms a rear chamber with one side of the speaker and the circuit board, and the rear rubber member abuts against the circuit board. Compared with the speaker structure of the conventional electronic device, the present invention forms a front sound chamber by using a front rubber member and a speaker, and the front rubber member is matched with the speaker, and the front sound chamber is airtight, thereby avoiding direct passage through the speaker. The sound chamber is formed in cooperation with the casing to form a sound-prone chamber; the rear chamber is formed by using a rear rubber member and the speaker and the circuit board, and the rear rubber member is matched with the circuit board, and the rear chamber is airtight. In this way, the speaker structure of the electronic device can be made airtight. [Embodiment] Referring to FIG. 1 , a speaker structure 100 of an electronic device (such as a mobile phone, etc.) according to a preferred embodiment of the present invention includes a housing 10 , a front rubber member 2 , a speaker 30 , and a rear rubber member 40 . And a circuit board 50. Referring to FIG. 2, the housing 1 has a receiving cavity 12 formed on the inner surface of the housing 395, and has a square frame structure. The receiving cavity 12 is surrounded by a first bottom wall 14 and a first peripheral wall 16. The first bottom wall 14 is provided with a sound hole 142, and a flange 144' is formed in the hole wall of the sound hole 142 for engaging with the front rubber member 20. The first peripheral wall 16 is surrounded by the irregularly shaped side walls and surrounds the sound hole 142. The top of the first peripheral wall 16 has an irregularly shaped mating surface 162' for mating with the rear rubber member 4''. The front rubber member 20 has a substantially frame structure for engaging with the sound hole 142. The front rubber member 20 has a recessed space 22 enclosing a second bottom wall 24 and a second peripheral wall 26 of the recessed space. The second bottom wall 24 defines a sound hole 242 having a square hole structure. In the present embodiment, a thin screen 28 is also provided at the bottom of the recess 22 between 201002086 and the screen 28 covers the sound hole 242. An annular groove 262 is defined in an outer side of the second peripheral wall 26 for engaging with a flange 144 on the wall of the sound hole 142. The speaker 30 has a square structure, and includes a sound absorbing surface 32 and an electrical connection surface 34. The speaker 3 emits sound through the sound absorbing surface%. The sound absorbing surface 32 is used for the front rubber member. 2 〇 match. Two electrical connection terminals 342 are formed on the electrical connection surface 34, and the two electrical connection terminals 342 are electrically connected to the circuit on the circuit board 50. The rear rubber member 40 has a substantially quadrangular frame structure, and has a second partition wall 42 and a third peripheral wall 44 surrounding the accommodating space 42. The third peripheral wall 44 is connected to each other by a four-shaped irregular sidewall to form a quadrangular frame. The second peripheral wall 44 includes a first end edge 442 and a second end edge 444. The surface of the first end edge 442 The shape corresponds to the shape of the first peripheral wall 16 of the housing 10 and the shape of the surface 162 is matched with the mating surface 162 of the first peripheral wall 16. The second end edge 444 is a flat surface, and the second end edge 4 is used for: mating the surface of the circuit board 50. A plurality of protrusions 446 are formed on the inner side of the third peripheral wall 44. The plurality of protrusions 446 form a card, a rim and a plurality of protrusions 446 of the accommodating space 42 and the third peripheral wall 44 define the accommodating space 42. To accommodate the speaker 3 within it. The circuit board 5 of the point 52 is a flat plate structure on which two electrical connections φ ± "one electrical connection point 52 is used for electrical connection of the two electrical connection terminals 342 of the speaker 30. °F, see Figure 3 and Figure 4' When the speaker structure 100 201002086 of the electronic device is assembled, the front rubber member 20 is first placed into the receiving cavity 12 of the housing 10, and the flange 144 of the sound hole 142 of the first bottom wall 14 is The annular groove 262 of the second peripheral wall 26 of the front rubber member 20 is engaged. Then, the sound absorbing surface 32 of the speaker 30 is brought into close contact with the surface of the rubber peripheral wall 22 of the front rubber member 20, and the sound absorbing surface 32 and a recessed space 22 of the front rubber member 20 form a front sound chamber 320. Since the front rubber member 20 has a certain elasticity of the rubber material, the front rubber member 20 cooperates with the sound radiating surface 32 of the speaker 30 to achieve airtightness. The effect is good, that is, the sound chamber 320 is more ideal for the sound effect of the speaker 30. Next, the rear rubber member 40 is matched with the housing cavity 12 of the housing 10, and the rear rubber member 40 is The first end edge 442 of the three-week wall 44 cooperates with the mating surface 162 of the first peripheral wall 16 of the housing 10, and The sounder 30 is received in the accommodating space 42 of the rear rubber member 40, and at the same time, the plurality of projections 446 of the rear rubber member 40 support the electrical connection surface 34 of the speaker 30 to securely mount the speaker 30. Finally, the assembly is as described. The circuit board 50, the circuit board 50 abuts against the third peripheral wall 44 of the rear rubber member 40, that is, the surface of the circuit board 50 cooperates with the second end edge 444 of the rear rubber member 40. The rear rubber member 40 The third peripheral wall 44 and the electrical connection surface 34 of the speaker 30 and the circuit board 50 form a rear chamber 340. Since the rear rubber member 40 has a certain elasticity of the rubber material, the second end edge 444 and the surface of the circuit board 50 The airtightness of the speaker 30 is good, that is, the airtightness of the rear sound chamber 340 is good. When the speaker 30 is scattered, the sound passes through the screen 28, the sound hole 242 and the casing 10 in the front rubber member 20. The sound hole 142 is transmitted to the outside world, 201002086. The speaker structure (10)+, the front sound chamber and the rear sound chamber _ have good airtightness 'no sound leakage', so that a better sound quality effect can be obtained. The size of the sound chamber 320 and the rear sound chamber 34〇 need to be repaired according to the design requirements of the electronic device. The size of the front rubber member 2Q or the rear rubber member % is more convenient for the speaker than the housing cavity 12 of the modified housing 1G. It can be understood that the screen 28 can be replaced by other materials, such as foam. It is understood that the screen 28 can be omitted, and when the speaker 3 is squeaked, the sound is directly transmitted from the sound hole 242 and the sound hole 142 on the casing 1 to the outside. [Simplified illustration] FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a schematic diagram of a speaker installation of an electronic device according to a preferred embodiment of the present invention; FIG. 2 is a schematic diagram of a speaker installation of an electronic device according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An overall schematic view of a speaker pen of an electronic device is assembled; and FIG. 4 is a view of the preferred embodiment of the present invention along the mm direction of FIG. [Main component symbol description] Speaker structure 100 Screen 28 Hub body 10 Speaker 30 Containment cavity 12 Dissection surface 32 201002086 First bottom wall sound hole flange First peripheral wall with rubber groove recessed in front of the second bottom wall Sound hole second peripheral wall annular groove front sound chamber 320 electrical connection surface 34 rear sound chamber 340 electrical connection terminal 342 rear rubber member 40 accommodation space 42 third peripheral wall 44 first end edge 442 second end edge 444 convex 446 circuit board 50 10