M366851 五、新型說明： 【新型所屬之技術領域】 本新型涉及一種音響結構，尤其涉及一種應用 於電子裝置中之音響結構。 【先前技術】 丨返者科學技術之快速發展及人們對生 求 中 曰 響結構已廣泛應用於電視、電腦等電子裝置 參 目别，為了適應電子產品日趨短小輕薄化之需 求，應用於其内之音響結構之形狀、擺放位置及: 用空間亦受到了一定之限制，音響結構中之揚聲器 亦通爷會受到電子產品中周邊元件之限制或遮擔， 而聲音之咼頻部分具有明顯之指向性，高頻聲音在 丈到遮擋物之遮擋時，感度明顯會下降， :影響音響結構之發聲品質。故，在實際產：之 °又计上，音響結構會受到空間與發聲品質之雙重限 制如何在充分利用空間之同時又使音響結構 :要高:發聲品！，這在如今對電子產品之音= 越來越向之趨勢下係倍受重視之問題。 【新型内容】 ％ 新型旨在提供種具有較高發聲品質且可節 之曰響結構及使用該音響結構之電子裝置。 種音響結構，包括外殼及設於外殼内之至少 4 M366851 一第一揚聲器及至少一第二揚聲器，所述第一揚聲 器用來負責聲音之高頻部分，所述第二揚聲器用來 負責聲音之中低頻部分，所述外殼包括用來安裝所 述第一揚聲器與第二揚聲器之安裝面板，所述安裝 面板設有第一通孔與第二通孔，所述第二通孔之中 心相比第一通孔之中心更靠近安裝面板之一中心 線，所述第一揚聲器與第二揚聲器在外殼内分別對 應所述第一通孔與第二通孔安裝。 一種電子裝置，包括外框及與所述外框結合之 音響結構，所述音響結構包括外殼及設於外殼内之 至少一第一揚聲器及至少一第二揚聲器，所述第一 揚聲器用來負責聲音之高頻部分，所述第二揚聲器 用來負責聲音之中低頻部分，所述外殼包括用來安 裝所述第一揚聲器與第二揚聲器之安裝面板，所述 安裝面板設有第一通孔與第二通孔，所述第一揚聲 器與第二揚聲器在外殼内分別對應所述第一通孔與 第二通孔安裝，所述第二通孔之中心相比第一通孔 之中心更靠近安裝面板之一中心線，所述第二通孔 被電子裝置中其他元件部分遮擋，所述第一通孔位 於所述元件之外而未被遮播。 上述音響結構及電子裝置中，所述第二通孔之 中心相比第一通孔之中心更靠近安裝面板之一中心 線，所述第二通孔被電子裝置中其他元件部分遮 擔，所述第一通孔位於所述元件之外而未被遮擔， M366851 故，所述第一揚聲器發出之高音及第二揚聲器發出 之中低音均不會受到電子裝置之所述元件之影響， 不僅可提高電子裝置之發聲品質，而且還可節省電 子裝置之空間，有利於電子裝置朝向短小輕薄之方 向發展。 【實施方式】 圖1所示為本新型一較佳實施例之音響結構 100，該音響結構100包括一外殼10、設於該外殼 10内之兩高音揚聲器（Tweeter ) 20、兩中低音揚聲 器（Middle Woofer) 30及一分頻電路40 (請參照圖 6)。該外殼10由塑膠材料製成，其包括一前蓋11 及與該前蓋11結合之一後蓋13。 請參照圖2至圖5，該前蓋11與後蓋13均成半 封閉狀。該前蓋11包括一基板111、由該基板111 之外緣朝向後蓋13翻起延伸形成之一侧壁113及與 該基板111結合之一音罩115。該基板111與該側壁 113合圍形成一半封閉之音腔117。該基板111包括 一安裝面板1111、一延伸板1112及設於該安裝面板 1111與該延伸板1112間之一連接板1113。該安裝 面板1111與延伸板1112均大致呈長方形平板狀， 並分別位於該基板111之兩端，且相互間具有一階 梯落差。該連接板1113由安裝面板1111之一端垂 直向下延伸（由圖3之角度看）形成，並平滑連接 於該延伸板1112之一端，從而使該基板111整體上 M366851 形成階梯狀。 該安裝面板1111具有一中心線l2，該安裝面板 1111順沿該中心線L2之延伸方向上設有兩中低音通 孔1115及兩高音通孔1114。該等高音通孔1114及 中低音通孔1115貫穿該安裝面板1111，中低音通孔 1115之孔徑大於高音通孔1114之孔徑，且二者均呈 圓形，該等中低音通孔1115之中心N相比該等高音 通孔1114之中心Μ更靠近該中心線L2設置，前述 高音揚聲器20與中低音揚聲器30分別對應安裝至 該等高音通孔1114與該等中低音通孔1115内。高 音通孔1114設於靠近安裝面板1111之自由端即遠 離連接板1113 —端之長侧邊處，且分別對準兩高音 揚聲器20。該等中低音通孔1115設於該安裝面板 1111之另一端即靠近連接板1113 —端之中央，且分 別對準兩中低音揚聲器30。每一中低音通孔1115 之中心N和每一高音通孔1114之中心Μ之連線k 與安裝面板1111之中心線L2之間呈一夾角，且該 夾角為銳角（如圖2所示）。在本實施例中，該等中 低音通孔1115相鄰且於安裝面板1111上居中設 置，該等高音通孔1114相鄰且其中心Μ位於中心 線L2之靠左側，該中心線L2剛好經過該等中低音 通孔1115之中心N，該等中低音通孔1115之中心N 之連線平行於該等高音通孔1114之中心Μ之連線。 該安裝面板1111位於每一中低音通孔1115之 M366851 周緣垂直向音腔117延伸形成一圓環形之凸緣 1116，以便於將中低音揚聲器30定位。該安裝面板 1111之外表面上還有一墊片1117,該墊片1117由 乙浠-醋酸乙稀共聚物（Ethylene/Vinyl Acetate， EVA)材料製成，其設於高音通孔1114之周緣，一 方面可避免聲音洩漏，另一方面可減少音響結構100 與使用該音響結構100之電子裝置500 (如圖8所 示）間之振動。該安裝面板1111位於該等高音通孔 1114之外圍垂直向音腔117延伸形成一環形之外圍 壁1118，該外圍壁1118用於與該音罩115結合，以 將高音揚聲器20收容於其中，該外圍壁1118上設 有一出線槽1119,以便於高音揚聲器20之導線（圖 未示）由此導出。 該延伸板1112之内表面一體垂直朝向後蓋13 延伸形成複數隔板1121，該等隔板1121上蓋設一片 狀之蓋板1122,該蓋板1122上設有複數交錯設置之 凸肋1123，以加強蓋板1122之強度，該蓋板1122 與隔板1121、延伸板1112、延伸板1112上之側壁 113共同合圍形成一大致呈L型之出音通道1124， 該出音通道1124延伸至該延伸板1112之自由端。 該延伸板1112位於該出音通道1124外還設有複數 上下貫穿之固定孔1125。 該前蓋11之側壁113之頂部形成一台階1131， 該台階1131内高外低，以用來與該後蓋13卡合。 M366851 該側壁113位於該基板111之延伸板1112之自由端 處開設有一出音孔1134,該出音孔1134將該出音通 道1124與外界連通。該側壁113位於該基板111之 安裝面板1111之自由端處還向該音腔117内凹進， 從而於該前蓋11上形成一第一固定槽1135,該側壁 113向該第一固定槽1135凸設一第一凸耳1136，該 側壁113位於該基板111之連接板1113處之部分為 傾斜狀，該側壁113位於該連接板1113之兩側處還 向外對稱凸設兩第二凸耳1137，該基板111之延伸 板1112之自由端向外凸設一第三凸耳1138,該等第 一、第二、第三凸耳1136、1137、1138用來將音響 結構100固定於該電子裝置500。另外，該等第一、 第二、第三凸耳1136、1137、1138上還各設一橡膠 墊片1139以減少音響結構100與電子裝置500間之 振動。 該音罩115呈半封閉狀，其開口 一端與該基板 111之安裝面板1111之外圍壁1118緊密結合，以使 該音罩115與該基板111間形成收容高音揚聲器20 之一相對密封之收容腔1151，避免高音揚聲器20 發出之聲音與中低音揚聲器30發出之聲音相互相 消而產生中音榖。該音罩115上還設有一調音孔 1152,該調音孔1152將該音腔117與該收容腔1151 連通，該調音孔1152上貼設有一調音布1153，該調 音布1153由不織布製成，該調音孔1152與調音布 9 M366851 1153可提高高音揚聲器20之Q值（品質因素），調 整其銳度，以使高音揚聲器20發出之高音與中低音 揚聲器30發出之中低音平滑銜接。 與該前蓋11相類似，該後蓋13亦包括一基板 131及由該基板131之外圍朝向前蓋11延伸形成之 一側壁133。該基板131與該側壁133合圍形成一 半封閉之音腔137。該基板131大致呈長條板狀， 其包括一本體部1311、一延伸部1312及設於該本 體部1311與該延伸部1312間之一連接部1313，該 本體部1311、延伸部1312、連接部1313分別與前 蓋11之安裝面板1111、延伸板1112、連接板1113 相對應。該本體部1311、延伸部1312、連接部1313 在基板131之寬度方向上均成弧狀，且在基板131 之長度方向上平滑連接。 該本體部1311 —體向該音腔137延伸形成兩支 撐體1314，每一支撐體1314呈十字架形，且對準 該中低音通孔1115與中低音揚聲器30,以用來支撐 該中低音揚聲器30。 該延伸部1312對應該前蓋11上之每一固定孔 1125處設有一内設螺紋之中空螺柱1325。 該後蓋13之側壁133之頂端形成一台階1331， 該台階1331外高内低，以用來與該前蓋11之側壁 113上之台階1131配合。 該側壁133位於該基板131之延伸部1312之自 M366851 由端處開設有一出音孔1334，該出音孔1334與該 前蓋11之側壁113上之出音孔1134對應。該側壁 133位於該基板131之本體部1311之自由端處及位 ' 於該連接部1313之兩侧處還向該音腔137内凹進， . 從而於該後蓋13上形成一第一固定槽1335及兩第 二固定槽1337，該第一固定槽1335與該前蓋11之 侧壁113上之第一固定槽1135及第一凸耳1136對 應，該等第二固定槽1337與該前蓋11之側壁113 ❿ 上之第二凸耳1137對應。該側壁133位於該基板 131之連接部1313處之部分亦為傾斜狀。 該等高音揚聲器20、中低音揚聲器30均用來將 電訊號轉換為結構振動以產生聲音。該等高音揚聲 器20主要用來負責聲音之高頻部分，每一高音揚聲 器20之前方設有一音膜23，該音膜23之外徑大致 等於該高音通孔1114之孔徑。該等中低音揚聲器30 之口徑較高音揚聲器20之口徑大，其主要用來負責 * 聲音之中、低頻部分，每一中低音揚聲器30之前方 設有一音膜33,該音膜33之外徑大於高音揚聲器 20之音膜23之外徑，且大致等於該中低音通孔1115 之孔徑。 如圖6所不’該分頻電路40採用二分頻（將聲 音分為高、中低兩頻率段）之形式，其包括一電容 C及一電感L。該電容C與並聯在一起之兩高音揚 聲器20相串聯，組成南通電路’以盡可能地濾、掉南 11 M366851 音揚聲器20發出聲音之中低頻部分。該電感L與串 聯在一起之兩中低音揚聲器30相串聯，組成低通電 路，以盡可能地濾掉中低音揚聲器30發出聲音之高 頻部分。該分頻電路40之分頻點大於或等於高音揚 聲器20之最低諧振頻率之兩倍，以獲得更好之高音 訊號。 請再參圖5，組裝該音響結構100時，每一高音 揚聲器20靠近音膜23之一端對準該前蓋11之安裝 面板1111之高音通孔1114，並結合於該安裝面板 1111上。每一中低音揚聲器30靠近音膜33之一端 對準該前蓋11之安裝面板1111之中低音通孔 1115，並結合於該安裝面板1111上，並按照圖6所 示之分頻電路40電連接該等高音揚聲器20、中低 音揚聲器30。將該音罩115罩設於高音揚聲器20 上，使高音揚聲器20收容於音罩115之收容腔1151 内，藉由膠水或其他粘合物將該音罩115之開口一 端與該基板111之安裝面板1111之外圍壁1118緊 密粘合。該前蓋11之側壁113上之台階1131卡設 於該後蓋13之側壁133上之台階1331内，並藉由 超音波熔接或膠水粘合之方式將前蓋11與後蓋13 結合在一起。此時，該前蓋11内之音腔117與該後 蓋13内之音腔137共同形成該音響結構100之音 腔，該高音揚聲器20、中低音揚聲器30收容於該 音響結構100之音腔内，且中低音揚聲器30之後端 12 M366851 正好抵靠於該後蓋13之支撐體1314上，該前蓋11 之側壁113上之出音孔1134與該後蓋13之侧壁133 上之出音孔1334正好對準，共同形成將該出音通道 1124與外界連通之一出音孔。複數螺釘1225分別 穿過該前蓋11上之固定孔1125及該後蓋113上之 螺柱1325，將前蓋11與後蓋13進一步固定。 工作時，該等高音揚聲器20、中低音揚聲器30 由前、後發出聲音，由前端發出之聲音藉由前蓋11 上之高音通孔1114、中低音通孔1115傳送至外界， 由後端發出之聲音進入該音響結構100之音腔内產 生共振，並藉由該出音通道1124及出音孔傳送至外 界，上述分別藉由出音孔與藉由高音通孔1114、中 低音通孔1115傳送至外界之聲音相互疊加以拓寬聲 音之頻帶，增強低音效果。 另外，在實際應用中，如裝配至電子裝置中時， 上述音響結構100還常搭配另一音響結構100a同時 使用，如圖7所示，該音響結構100a與音響結構100 完全對稱，其中該音響結構100a之高音揚聲器20 設置在中心線L2之靠右側。 圖8所示為上述音響結構100、100a應用於電 子裝置500中之示意圖，該電子裝置500可為電視、 電腦等，該電子裝置500包括一外框50及與該外框 50結合之一顯示幕60，該外框50之前端面之左右 兩側上分佈有複數微小穿孔51，該顯示幕60設於 13 M366851 該外框50之中間，其具有一玻璃板61。該對音響 結構100、100a收容於該外框50内，並對稱設置於 顯示幕60之左右兩侧，該對音響結構100、100a之 中低音揚聲器30、中低音通孔1115之一部分被顯示 幕60之玻璃板61 (或電子裝置500之其他元件） 所遮擋，另一部分對準該外框50上之穿孔51，而 該對音響結構100、100a之高音揚聲器20、高音通 孔1114由於相對於中低音揚聲器30偏移設置則位 於顯示幕60之玻璃板61外，即高音揚聲器20、高 音通孔1114之整個面積對準該外框50上之穿孔 51，而沒有被顯示幕60之玻璃板61所遮擔。由於 中低音之波長較長，其沒有明顯之指向性，高音之 波長較短，其具有明顯之指向性，故，該中低音揚 聲器30之一部分即使被玻璃板61所遮擋，其發出 之中低音亦不會受到玻璃板61之影響，而高音揚聲 器20由於位於玻璃板61外，故其發出之高音亦不 會受到影響，不僅可減少聲音之失真，提高電子裝 置500之發聲品質，而且還可節省電子裝置500之 空間，有利於電子裝置500朝向短小輕薄、結構緊 湊之方向發展。 圖9所示為上述電子裝置500之聲音特性曲線 圖。由該圖可以看出，本新型電子裝置500之聲音 特性曲線比較平坦，且高頻部分亦比較突出，失真 較小，發聲品質高。 14 M366851 當然，上述音響結構100、100a與電子裝置500 中，該高音揚聲器20、中低音揚聲器30之數量可 根據需要分別設置一個或多個。在中低音通孔1115 ' 之中心N相比高音通孔1114之中心Μ更靠近該安 • 裝面板1111之中心線L2設置之前提下，該等高音 通孔1114、中低音通孔1115位置關係亦可變化，如 圖10所示之第二較佳實施例中之音響結構100b， 兩高音通孔1114b位於該兩中低音通孔1115b之 _ 間，如圖11所示之第三較佳實施例中之音響結構 100c，兩中低音通孔1115c位於該兩高音通孔1114c 之間，如圖12所示之第四較佳實施例中之音響結構 100d，該兩高音通孔1114d與兩中低音通孔1115d 於安裝面板1111之中心線L2方向上交錯設置。 該分頻電路40亦可根據需要串聯或並聯一些 電阻、電容或電感等。該分頻電路40還可採用多分 g 頻，如圖13與圖14所示之音響結構100e及其分頻 電路40e，該分頻電路40e為三分頻，即將聲音分為 高、中、低三個頻率段，此時音響結構100e對應上 述三個頻率段設置有高音揚聲器20e(主要用來負責 聲音之高頻部分）、中音揚聲器25e (主要用來負責 聲音之中頻部分）、低音揚聲器30e (主要用來負責 聲音之低頻部分）及高音通孔1114e、中音通孔 1145e、低音通孔1115e，該高音通孔1114e、中音通 孔1145e及低音通孔1115e之孔徑依次增大；相應 15 M366851 地，該高音揚聲器20e、中音揚聲器25e及低音揚聲 器30e之口徑依次亦依次增大，該高音揚聲器20e、 中音揚聲器25e及低音揚聲器30e分別安裝至高音 通孔1114e、中音通孔1145e及低音通孔1115e内。 在本實施例中，該中音揚聲器25e亦偏離安裝面板 之中心線L2設置，但其偏離程度小於低音揚聲器 30e，即中音通孔1145e之中心相比高音通孔1114e 之中心更靠近該中心線L2設置，而低音通孔1115e 之中心相比中音通孔1145e之中心又更靠近該中心 線L2設置。該分頻電路40e包括分別與高音揚聲器 20e、中音揚聲器25e及低音揚聲器30e連接之高 通、帶通、低通二個分支電路’從而分別滤掉面音 揚聲器20e發出聲音之中、低頻部分，濾掉中音揚 聲器25e發出聲音之高、低頻部分及濾掉低音揚聲 器30e發出聲音之高、中頻部分。 綜上所述，本新型確已符合新型專利之要件， 遂依法提出專利申請。惟，以上所述者僅為本新型 之較佳實施方式，自不能以此限制本案之申請專利 範圍。舉凡熟悉本案技藝之人士援依本新型之精神 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為本新型第一實施例之一音響結構之立體 組裝圖。 16 M366851 圖2為圖1所示音響結構之主視圖。 圖3為圖1所示音響結構之立體分解圖。 圖4為圖1所示音響結 圖 m^ 視角之立體分解 圖5為圖4所示音響結 蓋結合之部分組裝圖。射^心與外殼之前 圖6為圖1所示音響結構中之分頻電路圖。 圖7為本新型另一音響結構之立體組裝圖。 圖8為圖1與圖7所示音塑社 裳置中之示意圖。斤丁曰響結構應用於-電子 =9為圖8所示電子裝置之聲音特性曲線圖。 圖 -10為本新型第二實施例之音響結構之主視 圖。 圖11為本新型第三實施例之音響結構之主 視 圖 圖〇 圖12為本新型第四實施例之音響結構之 圖13為本新型第五實施例之音響結構之 主視 主視 圖14為圖13所示音響結構中所採用之分頻電 路圖。 【主要元件符號說明】 音響結構 外殼 100、100a、l〇〇b、100c、1〇〇d、1〇〇e 10 前蓋 11 17 M366851 基板 111 、 131 安裝面板 1111 延伸板 1112 連接板 1113 南音通孔 1114、1114a、1114b、1114c、1114d、1114e 中低音通孔 1115 、 1115a 、1115b 、 1115c 、1115d 中音通孔 1145e 低音通孔 1115e 凸緣 1116 墊片 1117 外圍壁 1118 出線槽 1119 隔板 1121 蓋板 1122 凸肋 1123 出音通道 1124 固定子L 1125 側壁 113、133 台階 1131 、 1331 出音孔 1134、1334 第一固定槽 1135 、 1335 第一凸耳 1136 第二凸耳 1137 第三凸耳 1138 橡膠墊片 1139 音罩 115 收容腔 1151 調音子L 1152 調音布 1153 音腔 117、137 後蓋 13 本體部 1311 延伸部 1312 連接部 1313 支撐體 1314 螺柱 1325 第二固定槽 1337 高音揚聲器 20 ' 20e 音膜 23、33 中低音揚聲器 30 中音揚聲器 25e 低音揚聲器 30e 分頻電路 40 、 40e 中心 Μ、N 中心連線 Li 中心線 l2 18 M366851 電容 C 電感 L 電子裝置 500 外框 50 穿孔 51 顯示幕 60 玻璃板 61M366851 V. New description: [New technical field] The present invention relates to an acoustic structure, and more particularly to an acoustic structure applied to an electronic device. [Prior Art] The rapid development of the science and technology of the returnees and the structure of people's screams have been widely used in televisions, computers and other electronic devices. In order to meet the needs of electronic products, which are becoming shorter and lighter, they are used in them. The shape and position of the sound structure and the space for use are also limited. The speakers in the sound structure are also restricted or covered by the peripheral components of the electronic products, and the frequency of the sound is obvious. Directivity, when the high-frequency sound is blocked by the obstruction, the sensitivity will obviously decrease: affecting the sound quality of the acoustic structure. Therefore, in the actual production: °, the sound structure will be limited by the space and sound quality. How to make full use of the space while making the sound structure: high: sound products! This is a problem that is now being paid more and more attention to the trend of electronic products. [New content] % The new model aims to provide an electronic device with a high sound quality and a squeaky structure and an audio structure using the same. The sound structure comprises a casing and at least 4 M366851 a first speaker and at least a second speaker disposed in the casing, the first speaker is responsible for the high frequency part of the sound, and the second speaker is responsible for the sound The middle and low frequency portions, the outer casing includes a mounting panel for mounting the first speaker and the second speaker, the mounting panel is provided with a first through hole and a second through hole, and the center of the second through hole is compared The center of the first through hole is closer to a center line of the mounting panel, and the first speaker and the second speaker are respectively mounted in the housing corresponding to the first through hole and the second through hole. An electronic device includes an outer frame and an acoustic structure combined with the outer frame, the sound structure comprising a housing and at least one first speaker and at least one second speaker disposed in the outer casing, wherein the first speaker is responsible for a high frequency portion of the sound, the second speaker is responsible for a low frequency portion of the sound, the housing includes a mounting panel for mounting the first speaker and the second speaker, the mounting panel is provided with a first through hole And the second through hole, the first speaker and the second speaker are respectively installed in the outer casing corresponding to the first through hole and the second through hole, and the center of the second through hole is more than the center of the first through hole Adjacent to one of the centerlines of the mounting panel, the second via is partially obscured by other components in the electronic device that are outside the component and are not obscured. In the above acoustic structure and electronic device, the center of the second through hole is closer to a center line of the mounting panel than the center of the first through hole, and the second through hole is partially covered by other components in the electronic device. The first through hole is not covered by the component, and the M366851, the high sound emitted by the first speaker and the middle and low sound emitted by the second speaker are not affected by the components of the electronic device, not only The sound quality of the electronic device can be improved, and the space of the electronic device can be saved, which is favorable for the development of the electronic device in the direction of shortness and lightness. [Embodiment] FIG. 1 shows an acoustic structure 100 according to a preferred embodiment of the present invention. The acoustic structure 100 includes a housing 10, two tweeters 20 disposed in the housing 10, and two mid-woofers ( Middle Woofer 30 and a frequency divider circuit 40 (see Figure 6). The outer casing 10 is made of a plastic material and includes a front cover 11 and a rear cover 13 in combination with the front cover 11. Referring to Figures 2 to 5, the front cover 11 and the rear cover 13 are both semi-closed. The front cover 11 includes a substrate 111, and a side wall 113 is formed by extending from the outer edge of the substrate 111 toward the rear cover 13 and a sound cover 115 is coupled to the substrate 111. The substrate 111 and the side wall 113 are enclosed to form a semi-closed sound chamber 117. The substrate 111 includes a mounting panel 1111, an extension panel 1112, and a connection panel 1113 disposed between the mounting panel 1111 and the extension panel 1112. The mounting panel 1111 and the extension panel 1112 are both substantially rectangular and are located at opposite ends of the substrate 111, and have a step difference between each other. The connecting plate 1113 is formed vertically extending from one end of the mounting panel 1111 (as viewed from the perspective of FIG. 3) and is smoothly connected to one end of the extending plate 1112, so that the substrate 111 as a whole M366851 is stepped. The mounting panel 1111 has a center line 12, and the mounting panel 1111 is provided with two middle bass through holes 1115 and two high-tone through holes 1114 along the extending direction of the center line L2. The treble through hole 1114 and the middle bass through hole 1115 extend through the mounting panel 1111, and the aperture of the middle bass through hole 1115 is larger than the aperture of the treble through hole 1114, and both are circular, and the center of the middle bass through hole 1115 N is disposed closer to the center line L2 than the center Μ of the high-pitched through holes 1114. The tweeter 20 and the middle woofer 30 are respectively mounted in the high-pitched through holes 1114 and the middle bass through holes 1115. The tuned through hole 1114 is disposed near the free end of the mounting panel 1111, i.e., at the long side of the end of the connecting plate 1113, and is aligned with the two tweeters 20, respectively. The mid-bass through holes 1115 are disposed at the other end of the mounting panel 1111, that is, near the center of the end of the connecting plate 1113, and are respectively aligned with the two middle woofer speakers 30. The center line N of each of the bass passages 1115 and the center line of each of the high-tone through holes 1114 are at an angle with the center line L2 of the mounting panel 1111, and the angle is an acute angle (as shown in FIG. 2). . In this embodiment, the middle bass through holes 1115 are adjacent to each other and are centrally disposed on the mounting panel 1111. The high pitch through holes 1114 are adjacent to each other and the center turn thereof is located on the left side of the center line L2, and the center line L2 just passes. The center N of the middle bass through holes 1115 and the center N of the middle bass through holes 1115 are parallel to the center line of the high pitch through holes 1114. The mounting panel 1111 is located at the periphery of the M366851 of each of the middle bass through holes 1115 and extends perpendicularly to the sound chamber 117 to form a circular flange 1116 for positioning the center woofer 30. The outer surface of the mounting panel 1111 further has a gasket 1117 made of an Ethylene/Vinyl Acetate (EVA) material, which is disposed on the periphery of the treble through hole 1114. In addition, sound leakage can be avoided, and on the other hand, vibration between the acoustic structure 100 and the electronic device 500 (shown in FIG. 8) using the acoustic structure 100 can be reduced. The mounting panel 1111 is located at the periphery of the high-pitched through hole 1114 and extends perpendicularly to the sound chamber 117 to form an annular peripheral wall 1118 for engaging with the sound cover 115 to receive the tweeter 20 therein. A peripheral groove 1119 is provided on the peripheral wall 1118 so that the wires (not shown) of the tweeter 20 are thereby derived. The inner surface of the extension plate 1112 extends vertically toward the rear cover 13 to form a plurality of partitions 1121. The partition plates 1121 are covered with a one-piece cover plate 1122. The cover plate 1122 is provided with a plurality of ribs 1123 which are staggered. To strengthen the strength of the cover plate 1122, the cover plate 1122 and the partition plate 1121, the extension plate 1112, and the side wall 113 of the extension plate 1112 are collectively formed to form a substantially L-shaped sound emission channel 1124, and the sound emission channel 1124 extends to the The free end of the extension plate 1112. The extension plate 1112 is located outside the sound emission channel 1124 and is provided with a plurality of fixing holes 1125 extending through the upper and lower sides. A step 1131 is formed on the top of the side wall 113 of the front cover 11, and the step 1131 is high and low inside to engage with the rear cover 13. The M366851 has a sound hole 1134 formed at a free end of the extending plate 1112 of the substrate 111. The sound hole 1134 communicates the sound channel 1124 with the outside. The side wall 113 is recessed into the sound chamber 117 at the free end of the mounting panel 1111 of the substrate 111, so that a first fixing groove 1135 is formed on the front cover 11, and the side wall 113 faces the first fixing groove 1135. A first lug 1136 is protruded, and a portion of the side wall 113 located at the connecting plate 1113 of the substrate 111 is inclined. The side wall 113 is located at two sides of the connecting plate 1113 and further protrudes outwardly symmetrically from the second lug. 1137, a third lug 1138 protrudes from a free end of the extension plate 1112 of the substrate 111, and the first, second, and third lugs 1136, 1137, and 1138 are used to fix the acoustic structure 100 to the electronic device. Device 500. In addition, a rubber spacer 1139 is further disposed on the first, second, and third lugs 1136, 1137, and 1138 to reduce vibration between the acoustic structure 100 and the electronic device 500. The sound cover 115 is semi-closed, and one end of the opening is tightly coupled with the peripheral wall 1118 of the mounting panel 1111 of the substrate 111, so that the soundproof cover 115 and the substrate 111 form a receiving cavity for receiving a relatively sealed one of the tweeters 20. In 1151, the sound emitted by the tweeter 20 and the sound of the middle woofer 30 are prevented from canceling each other to produce a middle cymbal. The soundproof cover 1152 is further provided with a tuning hole 1152. The tuning hole 1152 is connected to the receiving cavity 1151. The tuning hole 1152 is attached with a tuning cloth 1153. The tuning cloth 1153 is made of non-woven fabric. The tuning hole 1152 and the tuning cloth 9 M366851 1153 can increase the Q value (quality factor) of the tweeter 20 and adjust its sharpness so that the high pitch emitted by the tweeter 20 and the mid-woofer 30 are smoothly connected. Similar to the front cover 11, the rear cover 13 also includes a substrate 131 and a side wall 133 extending from the periphery of the substrate 131 toward the front cover 11. The substrate 131 and the side wall 133 are enclosed to form a semi-closed sound chamber 137. The substrate 131 is substantially in the shape of a long strip, and includes a body portion 1311, an extending portion 1312, and a connecting portion 1313 disposed between the body portion 1311 and the extending portion 1312. The body portion 1311 and the extending portion 1312 are connected. The portions 1313 correspond to the mounting panel 1111, the extension plate 1112, and the connection plate 1113 of the front cover 11, respectively. The main body portion 1311, the extending portion 1312, and the connecting portion 1313 are arcuately formed in the width direction of the substrate 131, and are smoothly connected in the longitudinal direction of the substrate 131. The main body portion 1311 extends to the sound chamber 137 to form two supporting bodies 1314. Each of the supporting bodies 1314 has a cross shape and is aligned with the middle bass through hole 1115 and the middle woofer 30 for supporting the middle woofer. 30. The extending portion 1312 is provided with a threaded hollow stud 1325 corresponding to each of the fixing holes 1125 of the front cover 11. The top end of the side wall 133 of the rear cover 13 forms a step 1331 which is low inside and outside to fit the step 1131 on the side wall 113 of the front cover 11. The side wall 133 is located at the extending portion 1312 of the substrate 131. A sound hole 1334 is defined from the end of the M366851, and the sound hole 1334 corresponds to the sound hole 1134 on the side wall 113 of the front cover 11. The sidewall 133 is located at the free end of the body portion 1311 of the substrate 131 and is recessed into the sound chamber 137 at both sides of the connecting portion 1313. Thus, a first fixing is formed on the back cover 13. a first fixing groove 1335 corresponding to the first fixing groove 1135 and the first lug 1136 on the side wall 113 of the front cover 11, the second fixing groove 1337 and the front The second lug 1137 on the side wall 113 of the cover 11 corresponds to the second lug 1137. The portion of the side wall 133 located at the connecting portion 1313 of the substrate 131 is also inclined. The tweeter 20 and the mid-woofer 30 are both used to convert electrical signals into structural vibrations to produce sound. The treble speakers 20 are mainly used to be responsible for the high frequency portion of the sound. Each of the treble speakers 20 is provided with a sound film 23, and the outer diameter of the sound film 23 is substantially equal to the aperture of the treble through hole 1114. The upper woofer speaker 30 has a larger aperture, and is mainly used to be responsible for the middle and low frequency portions of the sound, and a sound film 33 is provided in front of each of the woofer speakers 30, and the outer diameter of the sound film 33 is provided. It is larger than the outer diameter of the sound film 23 of the tweeter 20 and is substantially equal to the aperture of the middle bass through hole 1115. The frequency dividing circuit 40 is in the form of a two-way frequency (dividing the sound into two high-, medium-low frequency segments), and includes a capacitor C and an inductor L. The capacitor C is connected in series with the two tweeters 20 connected in parallel to form a Nantong circuit' to filter as much as possible the low frequency portion of the sound emitted by the south 11 M366851 speaker 20. The inductor L is connected in series with the two subwoofers 30 connected in series to form a low power path to filter out the high frequency portion of the sound produced by the center woofer 30 as much as possible. The frequency dividing circuit 40 has a frequency dividing point greater than or equal to twice the lowest resonant frequency of the high-pitched speaker 20 for a better high-pitched signal. Referring to FIG. 5, when the acoustic structure 100 is assembled, each of the tweeters 20 is aligned with the tweeter hole 1114 of the mounting panel 1111 of the front cover 11 near one end of the sound film 23, and is coupled to the mounting panel 1111. Each of the subwoofers 30 is adjacent to one end of the sound film 33 and aligned with the bass through hole 1115 of the mounting panel 1111 of the front cover 11 and coupled to the mounting panel 1111, and is electrically connected to the frequency dividing circuit 40 shown in FIG. The tweeter 20 and the middle woofer 30 are connected. The sound cover 115 is disposed on the tweeter 20, and the tweeter 20 is received in the receiving cavity 1151 of the sound cover 115. The open end of the sound cover 115 and the substrate 111 are mounted by glue or other adhesive. The peripheral wall 1118 of the panel 1111 is tightly bonded. The step 1131 of the side wall 113 of the front cover 11 is engaged in the step 1331 of the side wall 133 of the rear cover 13, and the front cover 11 and the rear cover 13 are combined by ultrasonic welding or glue bonding. . At this time, the sound chamber 117 in the front cover 11 and the sound chamber 137 in the back cover 13 together form the sound cavity of the acoustic structure 100. The tweeter 20 and the middle woofer 30 are accommodated in the sound cavity of the acoustic structure 100. And the rear end 12 M366851 of the middle woofer 30 just abuts against the support body 1314 of the rear cover 13, the sound hole 1134 on the side wall 113 of the front cover 11 and the side wall 133 of the rear cover 13 The sound holes 1334 are just aligned to form a sound hole for connecting the sound output channel 1124 to the outside. The plurality of screws 1225 are respectively passed through the fixing holes 1125 of the front cover 11 and the studs 1325 on the rear cover 113 to further fix the front cover 11 and the rear cover 13. During operation, the tweeter 20 and the middle woofer 30 emit sounds from the front and the rear, and the sound emitted from the front end is transmitted to the outside through the high-pitched through hole 1114 and the middle bass through hole 1115 on the front cover 11, and is emitted from the rear end. The sound enters the sound cavity of the acoustic structure 100 to generate resonance, and is transmitted to the outside through the sound output channel 1124 and the sound hole, respectively, through the sound hole and the high sound through hole 1114, the middle bass through hole 1115 The sounds transmitted to the outside are superimposed on each other to widen the frequency band of the sound and enhance the bass effect. In addition, in practical applications, such as when assembled into an electronic device, the acoustic structure 100 is often used simultaneously with another acoustic structure 100a. As shown in FIG. 7, the acoustic structure 100a is completely symmetrical with the acoustic structure 100, wherein the acoustic structure is The tweeter 20 of the structure 100a is disposed on the right side of the center line L2. FIG. 8 is a schematic diagram of the audio structure 100, 100a applied to the electronic device 500. The electronic device 500 can be a television, a computer, etc., and the electronic device 500 includes an outer frame 50 and a display combined with the outer frame 50. The screen 60 has a plurality of micro-perforations 51 distributed on the left and right sides of the front end surface of the outer frame 50. The display screen 60 is disposed at the middle of the outer frame 50 of the 13 M366851, and has a glass plate 61. The pair of acoustic structures 100 and 100a are received in the outer frame 50 and symmetrically disposed on the left and right sides of the display screen 60. One of the pair of acoustic structures 100 and 100a is displayed on the woofer 30 and the middle bass through hole 1115. The glass plate 61 of 60 (or other components of the electronic device 500) is blocked, and the other portion is aligned with the through hole 51 of the outer frame 50, and the tweeter 20 and the high-tone through hole 1114 of the pair of acoustic structures 100, 100a are opposite to each other. The mid-woofer 30 offset setting is located outside the glass plate 61 of the display screen 60, that is, the entire area of the tweeter 20 and the treble through hole 1114 is aligned with the through hole 51 on the outer frame 50, and the glass plate of the display 60 is not displayed. 61 covers. Since the mid-bass has a long wavelength, it has no obvious directivity, and the high-pitched wave has a short wavelength, which has obvious directivity. Therefore, even if one part of the middle woofer 30 is blocked by the glass plate 61, it emits a middle bass. It is also not affected by the glass plate 61. Since the tweeter 20 is located outside the glass plate 61, the high-pitched sound is not affected, and the distortion of the sound can be reduced, and the sound quality of the electronic device 500 can be improved. Saving the space of the electronic device 500 facilitates the development of the electronic device 500 in a direction of being short, thin, and compact. Fig. 9 is a graph showing the sound characteristics of the above electronic device 500. As can be seen from the figure, the sound characteristic curve of the novel electronic device 500 is relatively flat, and the high-frequency portion is also prominent, the distortion is small, and the sound quality is high. 14 M366851 Of course, in the above audio structure 100, 100a and the electronic device 500, the number of the tweeter 20 and the middle woofer 30 can be set one or more as needed. Before the center N of the middle bass hole 1115' is closer to the center line L2 of the mounting panel 1111 than the center line 高 of the high-pitched through hole 1115', the positional relationship of the high-pitched hole 1114 and the middle bass through hole 1115 is raised. Alternatively, as shown in FIG. 10, the acoustic structure 100b of the second preferred embodiment, the two treble through holes 1114b are located between the two middle bass through holes 1115b, as shown in FIG. In the example, the acoustic structure 100c, the two middle bass through holes 1115c are located between the two high-tone through holes 1114c, as shown in FIG. 12, the acoustic structure 100d in the fourth preferred embodiment, the two high-tone through holes 1114d and two The bass through holes 1115d are staggered in the direction of the center line L2 of the mounting panel 1111. The frequency dividing circuit 40 can also connect a plurality of resistors, capacitors or inductors in series or in parallel as needed. The frequency dividing circuit 40 can also adopt a multi-divided g frequency, as shown in FIG. 13 and FIG. 14 , the acoustic structure 100e and its frequency dividing circuit 40e. The frequency dividing circuit 40e is divided by three, that is, the sound is divided into high, medium and low. Three frequency segments, at which time the acoustic structure 100e is provided with a tweeter 20e (mainly responsible for the high frequency portion of the sound), a midrange speaker 25e (mainly responsible for the intermediate portion of the sound), and a bass corresponding to the above three frequency segments. The speaker 30e (mainly responsible for the low frequency part of the sound) and the high sound through hole 1114e, the middle sound hole 1145e, the bass through hole 1115e, the apertures of the high sound through hole 1114e, the middle sound hole 1145e and the bass through hole 1115e are sequentially increased. Correspondingly, in the corresponding 15 M366851, the diameters of the tweeter 20e, the midrange speaker 25e and the woofer 30e are sequentially increased, and the tweeter 20e, the midrange speaker 25e and the woofer 30e are respectively mounted to the high-tone through hole 1114e and the middle sound. The through hole 1145e and the bass through hole 1115e. In the present embodiment, the mid-range speaker 25e is also disposed away from the center line L2 of the mounting panel, but the degree of deviation is smaller than that of the woofer 30e, that is, the center of the mid-tone through hole 1145e is closer to the center than the center of the high-tone through hole 1114e. The line L2 is set, and the center of the bass through hole 1115e is disposed closer to the center line L2 than the center of the middle hole 1145e. The frequency dividing circuit 40e includes high-pass, band-pass, and low-pass two branch circuits respectively connected to the tweeter 20e, the mid-range speaker 25e, and the woofer 30e, thereby filtering out the low-frequency portion of the sound produced by the surface speaker 20e, respectively. The high-range, low-frequency portion of the sound emitted from the mid-range speaker 25e and the high-frequency and intermediate-frequency portions of the sound emitted by the woofer 30e are filtered out. In summary, the new model has indeed met the requirements of the new patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application in this case. Any equivalent modifications or variations made by those who are familiar with the skill of the present invention in accordance with the spirit of the present invention shall be covered by the following patent applications. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective assembled view of an acoustic structure of a first embodiment of the present invention. 16 M366851 Figure 2 is a front view of the acoustic structure shown in Figure 1. 3 is an exploded perspective view of the acoustic structure shown in FIG. 1. 4 is an exploded perspective view of the acoustical view of FIG. 1. FIG. 5 is a partial assembled view of the acoustic cover shown in FIG. Before the radiation and the outer casing Fig. 6 is a frequency division circuit diagram in the acoustic structure shown in Fig. 1. Fig. 7 is a perspective assembled view of another acoustic structure of the present invention. Fig. 8 is a schematic view showing the arrangement of the sound plastic society shown in Figs. 1 and 7. The pinch structure is applied to -Electronic =9 is the sound characteristic curve of the electronic device shown in Fig. 8. Fig. 10 is a front elevational view showing the acoustic structure of the second embodiment of the present invention. Figure 11 is a front view of the acoustic structure of the third embodiment of the present invention. Figure 12 is a front view of the acoustic structure of the fifth embodiment of the present invention. The frequency division circuit diagram used in the acoustic structure shown in FIG. [Main component symbol description] Acoustic structure housing 100, 100a, l〇〇b, 100c, 1〇〇d, 1〇〇e 10 Front cover 11 17 M366851 Base plate 111, 131 Mounting panel 1111 Extension board 1112 Connection board 1113 Nanyintong Holes 1114, 1114a, 1114b, 1114c, 1114d, 1114e Middle bass through holes 1115, 1115a, 1115b, 1115c, 1115d Middle pass 1145e Bass through hole 1115e Flange 1116 Pad 1117 Peripheral wall 1118 Outlet slot 1119 Partition 1121 Cover 1122 rib 1123 sound channel 1124 stator L 1125 side wall 113, 133 step 1131, 1331 sound hole 1134, 1334 first fixing groove 1135, 1335 first lug 1136 second lug 1137 third lug 1138 Rubber gasket 1139 Sound cover 115 Containment cavity 1151 Tuner L 1152 Tuning cloth 1153 Sound chamber 117, 137 Back cover 13 Body portion 1311 Extension 1312 Connection 1313 Support body 1314 Stud 1325 Second fixing groove 1337 Tweeter 20 ' 20e Sound film 23, 33 Middle woofer 30 Middle sound speaker 25e Woofer 30e Frequency dividing circuit 40, 40e Center Μ, N Center line Li center line L2 18 M366851 Capacitor C Inductor L Electronics 500 Frame 50 Perforation 51 Display 60 Glass Plate 61
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