1309126 九、發明說明： 【發明所屬之技術領域】 本發明係涉及一種移動電話，尤係涉及一種移動 電話音箱結構。 【先前技術】 隨著通信産業的快速發展，移動電話之需求量大 增，移動電話作爲人們的通信工具，其最基本之功能 係傳輸聲音信號，爲傳輸聲音信號，需先將聲音信號 轉換爲電訊號，再將電訊號轉換爲結構震動以産生聲 音，因此在移動電話内必須具備電聲轉換元件，在電 聲轉換的元件中，最廣泛應用的就是揚聲器。 近年來，爲滿足消費者對便攜性等方面的要求， 移動電話等電子産品朝向短、小、輕、薄之發展方向 不斷進步與改善，因此，移動電話中揚聲器尺寸之大 小以及内置有揚聲器之音箱結構的體積也受到了限 制，造成移動電話通話品質的下降，爲增加移動電話 音箱結構中音腔腔體的體積，降低揚聲器的最低諧振 頻率，達到較好的共振效果以提升通話品質，通常直 接利用移動電話的内部空間作爲揚聲器的共振腔，但 在設計過程中，為節約空間，移動電話裡的電路板通 常需與音箱結構接觸，而其結合之緊密程度卻不甚理 想，容易造成聲波的泄漏，而漏出的聲波與音箱結構 發出的直達波産生干涉，將對聲音的頻率特性造成不 1309126 良影響，故需加以改進。 【發明内容】 有鑒於此，有必要提供一種提升通話品質之移動 電話及其音箱結構。 該音箱結構包括音腔，置於該音腔内的揚聲器， 以及夾設於該音腔與一電路板之間的框體。 該移動電話，包括一盒體，該盒體内設置有電路 板、内藏式天線結構及設於該電路板與内藏式天線結 構之間的音箱結構，該音箱結構包括音腔，置於該音 腔内的揚聲器，以及夾設於該音腔與電路板之間的框 該音箱結構由於加設了該框體，使音腔與電路板 之間形成一相對密閉的空間，可防止聲波的泄漏，使 聲音的頻率特性趨於穩定，同時該框體由制振材料製 成，其可降低由於揚聲器發聲所引起的揚聲器與電路 板間的共振傳遞，從而可避免聲音受到干擾，可提升 移動電話之通話品質。 【實施方式】 下面參照附圖，結合實施例作進一步說明。 如圖1、圖2所示，其分別爲本發明移動電話之結 構示意圖及該移動電話音箱結構20之立體組裝圖，該 移動電話包括一盒體10，該盒體10爲一大致呈長方體 狀的空腔結構，其底部區域形成一按鍵區11，中央區 域形成一顯示區12，頂端則形成一發聲區13，該發聲 1309126 區13内設置有音箱結構20。 該音箱結構20包括一音腔21，一置於該音腔21内 的揚聲器22,以及一設於該音腔21與移動電話的電路 板（圖未示）之間的中空的框體23。 如圖3所示爲該音箱結構2〇第一視角之立體分解 圖’該音箱結構20中的音腔21包括一第一音腔24以及 與第一音腔24相對應之第二音腔25。該第一音腔24包 括一第一腔體241，一連接該第一腔體241與第一音腔 24側壁247的第一通道242 ’以及一設於該第一腔體 241與第一通道242外圍之第一外圍腔244。該第一腔 體241之外形爲一不規則形狀’其包括一呈圓柱形狀 的圓形腔245及一呈矩形狀的方形腔246，該方形腔 246之一側與該圓形腔245相連通，其另一侧與該第一 通道242相連通。該第一通道242由方形腔246之另一 側向遠離該圓形腔245的方向延伸，延伸一段距離 後，其寬度逐漸擴大，呈一種漸擴狀結構延伸至第一 音腔24之侧壁247。 如圖4所示爲該音箱結構20第二視角之立體分解 圖，該音箱結構20中的第二音腔25上設有分別與該第 一音腔24之第一腔體241、第一通道242及第一外圍腔 244相對應之第二腔體251、第二通道252及第二外圍 腔254。該第二腔體251包括一收容揚聲器22的圓柱形 狀的收容腔255及與該方形腔246相對應的另一方形 腔256，該收容腔255與方形腔256並不連通，以避免 1309126 纟收谷腔255之壁。卩形成開孔而造成聲波的泄漏。該 收容腔255貫穿該第二音腔25，其遠離該方形腔—的 一侧设有一收容槽257(參照圖3);該第二音腔25靠近 帛二通道252的側壁上設有複數通音孔253，以連通該 帛二通道252與外界環境。#第—音㈣與第二音腔 25藉由螺釘、枯合劑或其他方式結合在—㈣，該第 腔體241與第一腔體251合圍形成一對應揚聲器22 的共振腔’即可認爲該共振腔包括方形腔撕、㈣以 及圓形腔245組成的空間，而該第-通道242與第二通 道252合圍形成—連接通道，該連接通道連通該共振 腔與該通音孔253 ’在音箱結構㈣形成—類似于亥 姆霍兹(Helmholtz)共鳴器結構的前音響室。 明同時參照圖3與圖4，該揚聲器22設於該第二音 肋的收容腔255内’該揚聲器22 一面上設有複數前 泄音孔221與該面相對之另—面上設有複數後泄音孔 籲 222 ’該揚聲器22電連接電路板（圖未示該連接路 徑），將電訊號轉化爲聲訊號，並藉由前泄音孔221、 後/世音孔222傳出’該揚聲器22側面上設有—置於該 收容槽257内的凸耳223，該凸耳223可將該揚聲器22 固定在該收容腔255内，以防止該揚聲器22在收容腔 255内旋轉。 明併參照圖3，該中空的框體23係由橡膠、玻 璃纖=布等制振材料製成，該框體23設於該第二音腔 25之遠離第一音腔24的一壁面上’夾設於該第二音腔 1309126 25與電路板之間。該框體23之外圍形狀與第二音腔25 之外圍形狀大致相同，該框體23之邊框的尺寸需進行 合理設計，以盡可能地增加該框體23中空結構所框住 的體積，並使該框體23不會因爲其邊框的尺寸過小而 衫響其制振效果。該電路板、第二音腔25之壁面與該 框體23的接觸處利用粘合劑（圖未示）進行充分的填 充粘合’在該電路板、第二音腔25之壁面與該框體23 之間形成一後音響室。該框體23可填補該電路板與第 二音腔25間的空隙，使該後音響室形成爲一相對密閉 的空間’防止音箱結構20漏出聲波，避免該漏出的聲 波與音箱結構20由通音孔253發出的直達波産生干 涉，可使聲音的頻率特性趨於穩定，提升移動電話的 通話品質。該框體23由制振材料製成，可降低由於揚 聲器22發聲所引起的揚聲器22與電路板間共振的傳 遞’從而可避免聲音受到干擾。 該電路板對應該揚聲器22位置上設有出音孔（圖 未不），該盒體10之上壁面對應該電路板上的出音孔 處設有複數發聲孔14(參照圖〇，以使揚聲器22的後泄 音孔222發出的聲音經由後音響室產生共振後，藉由 發聲孔14順利地傳送至外界。 如圖5、圖6所示分別爲本發明第二實施方式中音 箱結構30之音腔31的立體分解圖與展開圖，該音腔31 與音腔21的不同之處在於：該第二音腔35上靠近收容 腔355側壁還設有一通孔358，該通孔358貫穿第二音 11 1309126 腔35並與第二外圍腔354及第一外圍腔344連通。 請一併參照圖7 ’該圖爲本發明第二實施方式中 音箱結構30的立體組裝圖，藉由該通孔358，該框體 33所圍成的空間與第一音腔34的第一外圍腔344及第 二音腔35的第二外圍腔354連通形成一擴大體積的後 音響室，有效降低了揚聲器32之最低諧振頻率，可提 向移動電話之低頻回應效果，從而可提升移動電話之 | 通話品質。另，該通孔358應靠近揚聲器32之後泄音 孔322 ’以使揚聲器32之後泄音孔322發出的聲音沿較 短之路徑傳輸到第一外圍腔344及第二外圍腔354，減 少傳輸過程中聲音的損失，從而可提升移動電話音箱 結構30發出聲音之整體響度。 該音箱結構20、30可應用於不同的移動電話産品 中’特別對於内藏式天線之移動電話具更好效果。由 於内藏式天線之移動電話的盒體10的内部空間容納 .有内藏式天線結構，其内部空間更進一步受到限制， 有效地利用有限的空間也尤爲重要，且爲防止電磁干 擾’移動電話的盒體10内的天線鈷構需與電路板相隔 隔離間距（通常約大於7 mm以上）’本發明音箱結構 2〇、30可將音腔21、31與框體23、％置於天線結構與 電路板的隔離間距間，以充分利用有限的空間實現良 奸的低頻回應效果，並能減少共振傳遞，獲得良好的 通話品質。 【圖式簡單說明】 121309126 IX. Description of the Invention: [Technical Field] The present invention relates to a mobile phone, and more particularly to a mobile phone speaker structure. [Prior Art] With the rapid development of the communication industry, the demand for mobile phones has increased greatly. As the communication tool of mobile phones, the most basic function of mobile phones is to transmit sound signals. To transmit sound signals, it is necessary to convert the sound signals into The electric signal is converted into a structural vibration to generate sound. Therefore, an electroacoustic conversion element must be provided in the mobile phone. Among the electroacoustic conversion components, the speaker is most widely used. In recent years, in order to meet the requirements of consumers for portability, electronic products such as mobile phones have been continuously improved and improved in the direction of short, small, light and thin. Therefore, the size of speakers in mobile phones and the built-in speakers are The size of the speaker structure is also limited, resulting in a decline in the quality of the mobile phone call. In order to increase the volume of the sound cavity in the structure of the mobile phone speaker, the lowest resonant frequency of the speaker is reduced, and a better resonance effect is achieved to improve the call quality. The internal space of the mobile phone is directly used as the resonant cavity of the speaker, but in the design process, in order to save space, the circuit board in the mobile phone usually needs to be in contact with the speaker structure, and the tightness of the combination is not ideal, and the sound wave is easy to be caused. The leakage, and the leaking sound waves interfere with the direct wave from the speaker structure, which will have a good influence on the frequency characteristics of the sound, so it needs to be improved. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a mobile phone and a speaker structure thereof that improve call quality. The speaker structure includes a sound chamber, a speaker disposed in the sound chamber, and a frame sandwiched between the sound chamber and a circuit board. The mobile phone includes a box body having a circuit board, a built-in antenna structure, and a speaker structure disposed between the circuit board and the built-in antenna structure, the speaker structure including a sound chamber, placed a speaker in the sound chamber, and a frame sandwiched between the sound chamber and the circuit board. The speaker structure is provided with the frame body to form a relatively closed space between the sound chamber and the circuit board to prevent sound waves. The leakage makes the frequency characteristic of the sound tend to be stable, and the frame is made of a vibration-damping material, which can reduce the resonance transmission between the speaker and the circuit board caused by the sound of the speaker, thereby avoiding the interference of the sound and improving Call quality of mobile phones. [Embodiment] Hereinafter, the embodiments will be further described with reference to the accompanying drawings. FIG. 1 and FIG. 2 are respectively a schematic structural view of a mobile phone according to the present invention and an assembled view of the mobile phone speaker structure 20. The mobile phone includes a casing 10, and the casing 10 has a substantially rectangular parallelepiped shape. The cavity structure has a button area 11 formed in the bottom region, a display area 12 formed in the central area, and a sound emitting area 13 formed in the top end. The sounding 1309126 area 13 is provided with a speaker structure 20. The speaker structure 20 includes a sound chamber 21, a speaker 22 disposed in the sound chamber 21, and a hollow frame 23 disposed between the sound chamber 21 and a circuit board (not shown) of the mobile phone. FIG. 3 is an exploded perspective view of the first structure of the speaker structure. The sound chamber 21 of the speaker structure 20 includes a first sound chamber 24 and a second sound chamber 25 corresponding to the first sound chamber 24. . The first cavity 241 includes a first cavity 241, a first channel 242' connecting the first cavity 241 and the sidewall 247 of the first cavity 24, and a first cavity 241 and a first channel. The first peripheral cavity 244 of the periphery 242. The first cavity 241 is shaped like an irregular shape. The utility model comprises a circular cavity 245 having a cylindrical shape and a rectangular cavity 246 having a rectangular shape. One side of the square cavity 246 is connected to the circular cavity 245. The other side thereof is in communication with the first passage 242. The first passage 242 extends from the other side of the square cavity 246 away from the circular cavity 245. After extending a distance, the width thereof gradually expands and extends to the side wall of the first sound chamber 24 in a divergent structure. 247. FIG. 4 is an exploded perspective view of the second view of the speaker structure 20. The second cavity 25 of the speaker structure 20 is provided with a first cavity 241 and a first channel respectively corresponding to the first sound cavity 24. 242 and the first cavity 244 corresponding to the second cavity 251, the second channel 252 and the second peripheral cavity 254. The second cavity 251 includes a cylindrical receiving cavity 255 for receiving the speaker 22 and another square cavity 256 corresponding to the square cavity 246. The receiving cavity 255 is not connected to the square cavity 256 to avoid the 1309126 collection. The wall of the valley 255. The 卩 forms an opening and causes a sound wave to leak. The receiving cavity 255 extends through the second sound chamber 25, and a receiving slot 257 (see FIG. 3) is disposed on a side of the second cavity. The second sound chamber 25 is disposed adjacent to the sidewall of the second channel 252. The sound hole 253 is connected to the second channel 252 and the external environment. #第-音(四) and the second sound chamber 25 are combined by a screw, a dry agent or other means in (4), the first cavity 241 and the first cavity 251 are enclosed to form a resonant cavity of the corresponding speaker 22' The resonant cavity includes a square cavity tearing, (four) and a space formed by the circular cavity 245, and the first channel 242 and the second channel 252 are formed together to form a connecting channel, the connecting channel connecting the resonant cavity and the sound hole 253' The speaker structure (4) is formed - a front acoustic room similar to the Helmholtz resonator structure. Referring to FIG. 3 and FIG. 4 simultaneously, the speaker 22 is disposed in the receiving cavity 255 of the second sound rib. The speaker 22 is provided with a plurality of front sound leakage holes 221 on one surface thereof and a plurality of faces on the other side opposite to the surface. The rear sound hole 222 'the speaker 22 is electrically connected to the circuit board (the connecting path is not shown), and the electrical signal is converted into an audio signal, and is transmitted through the front sound hole 221 and the rear sound hole 222. A lug 223 disposed in the receiving groove 257 is disposed on the side of the speaker 22. The lug 223 can fix the speaker 22 in the receiving cavity 255 to prevent the speaker 22 from rotating in the receiving cavity 255. Referring to FIG. 3, the hollow frame 23 is made of a vibration-damping material such as rubber or glass fiber, and the frame 23 is disposed on a wall surface of the second sound chamber 25 away from the first sound chamber 24. 'Clamped between the second sound chamber 1309126 25 and the circuit board. The outer shape of the frame 23 is substantially the same as the outer shape of the second sound chamber 25. The size of the frame of the frame 23 needs to be properly designed to increase the volume framed by the hollow structure of the frame 23 as much as possible. The frame 23 is not caused to have a vibration-damping effect because the size of the frame is too small. The contact between the wall surface of the circuit board and the second sound chamber 25 and the frame 23 is sufficiently filled and bonded by an adhesive (not shown) on the wall surface of the circuit board and the second sound chamber 25 and the frame. A rear acoustic chamber is formed between the bodies 23. The frame 23 can fill the gap between the circuit board and the second sound chamber 25, so that the rear sound chamber is formed into a relatively closed space to prevent the speaker structure 20 from leaking sound waves, and the sound wave that is leaked is prevented from communicating with the speaker structure 20. The direct wave generated by the sound hole 253 interferes, so that the frequency characteristic of the sound tends to be stable, and the call quality of the mobile phone is improved. The frame 23 is made of a vibration-damping material to reduce the transmission of resonance between the speaker 22 and the board due to the sound of the speaker 22, thereby preventing the sound from being disturbed. The circuit board is provided with a sound hole corresponding to the position of the speaker 22 (not shown). The upper wall of the box body 10 is provided with a plurality of sound holes 14 at the sound hole of the circuit board (refer to FIG. The sound emitted by the rear sound bleed hole 222 of the speaker 22 is resonated through the rear sound chamber, and then smoothly transmitted to the outside through the sound emitting hole 14. As shown in Fig. 5 and Fig. 6, respectively, the speaker structure in the second embodiment of the present invention is shown. The sound chamber 31 is different from the sound chamber 21 in that the sound chamber 31 is different from the sound chamber 21 in that the second sound chamber 35 is further provided with a through hole 358 near the side wall of the receiving cavity 355. The through hole 358 is provided. Through the second sound 11 1309126 cavity 35 and communicate with the second peripheral cavity 354 and the first peripheral cavity 344. Please refer to FIG. 7 together. FIG. 7 is an assembled view of the speaker structure 30 according to the second embodiment of the present invention. The through hole 358, the space enclosed by the frame 33 communicates with the first peripheral cavity 344 of the first sound cavity 34 and the second peripheral cavity 354 of the second sound cavity 35 to form an enlarged volume rear sound chamber, which effectively reduces The lowest resonant frequency of the speaker 32 can be raised to the low frequency response of the mobile phone Therefore, the quality of the call of the mobile phone can be improved. In addition, the through hole 358 should be close to the sound vent 322' of the speaker 32 to transmit the sound emitted by the sound louver 322 of the speaker 32 to the first periphery along a short path. The cavity 344 and the second peripheral cavity 354 reduce the loss of sound during transmission, thereby improving the overall loudness of the sound emitted by the mobile phone speaker structure 30. The speaker structure 20, 30 can be applied to different mobile phone products. The mobile phone with the Tibetan antenna has better effect. The internal space of the casing 10 of the mobile phone with the built-in antenna is accommodated. With the built-in antenna structure, the internal space is further restricted, and the limited space is effectively utilized. It is particularly important, and to prevent electromagnetic interference, the antenna cobalt structure in the casing 10 of the mobile phone needs to be separated from the circuit board by an isolation gap (generally about more than 7 mm or more). The speaker structure 2〇, 30 of the present invention can be used for the sound chamber 21 31, frame 23, and % are placed between the isolation structure of the antenna structure and the circuit board, so as to fully utilize the limited space to achieve the low frequency response effect of the rape, and can reduce Resonance transfer, good call quality. [12] Brief Description of the drawings