200952505 九、發明說明： 【發明所屬之技術領域】 本發明係涉及一種音相結構，尤係涉及一種應用於電 子設備中之音箱結構。 【先前技術】 隨著科學技術之快速發展以及人們對生活之需求，音 箱結構已廣泛應用於移動電話、電腦等電子設備中。 ❹ 音箱結構通常包括一外殼以及設於該外殼内之一揚聲 器。該揚聲器用來將電信號轉換為結構振動以產生聲音， 該音箱結構之發聲品質除了與揚聲器本身有關之外，斑設 於揚聲器外之外殼亦極為相關，音箱 體 越大，其内之空氣對揚聲器發出之聲音之阻尼;=積 這樣可降低揚聲器之最低譜振頻率，從而可達到較好之低 頻響應效果以提升音箱結構之發聲品質。 _ ❾雜：前，音箱結構之外殼通常由塑膠材料製成，由於塑 浐立;度Γ广’該外殼之内部常需要設置加強肋來支 =:=二加:殼之厚度，以防止音箱結構變形， 加強肋或是增加外殼厚度之方法均會導致外 ΓΪ之體積減小，η直接影響了音箱結構之發聲 另外’塑膠外殼在射出成型時容水 形等問題，且塑膠外殼之導献 座，膠縮水、變 器專元件卫作時產生之熱 〃内之揚聲 勿双發，再者，塑膠外殼會 200952505 導致揚聲器發出之聲音產生駐波干擾，冑入揚冑器之信號 V止時，聲音延遲之時間較長。還有，塑膠外殼防止揚聲 ‘器漏磁之效果亦不甚理想。 【發明内容】 有鑒於此，有必要提供一種適用於電子設備中之音箱 結構。 ^ 一種音箱結構，包括一外殼以及設於該外殼内之一揚 ❹聲器，該外殼内形成一音腔以及與該音腔連通之一收容 腔’該揚聲器收容於該收容腔内，該外殼由鎂合金材料製 成。 上述音箱結構中，由於該外殼由鎂合金材料製成，其 強度較大，不需要在外殼内額外設置加強肋或增加外殼之 厚度I7可防止外设變形，同時由於該外殼内無需設置加強 肋或增加外殼之厚度，從而使外殼内之音腔之體積增加， 可達到較好之低頻響應效果以提升音箱結構之發聲品質。 ❹另外:鎂合金材料製成之外殼可避免聲音之駐波干擾，輸 2揚聲器之信號停止時，聲音延遲之時間縮短。再者，鎮 U金材料製叙外殼具有&好之散熱性能 量散發出去。還有，鎮合金材= 卜Λ又防止％聲器漏磁之效果較好。 【實施方式】 該-箱二所示為本發明一較佳實施例之音箱結構 ^曰相結構包括-外殼1G以及設於料殼iq内之一揚 器30 〇 7 200952505 該外殼ίο由鎂合金材料製成，其包括一下蓋以及 與該下蓋11結合之一上蓋13。該下蓋11與上蓋13均呈半 封閉狀。 該下蓋11包括一底壁111以及由該底壁11；[之外圍垂 直向上延伸形成之一侧壁112。該侧壁112與底壁111合圍 形成一腔體113’該腔體113包括一音腔114以及與該音腔 114連通之一收容腔Π5，該收容腔115大致呈圓形，以用 ❿來收容揚聲器30，該收容腔115内設有一支樓部116，該 支撐部116呈十字架形，其一體成型於該底壁m上，該 支撐部116之頂面為斜面，其與該底壁m間形成一銳角。 該音腔114内設有隔板117,該隔板117 一體成型於該底壁 111上，並與該底壁111、侧壁Π2合圍形成一大致呈[型 之風管118’該底壁ill上位於該風管jig内之一端設有一 風孔119(如圖3所示）’該風孔119貫穿該底壁in上下， 並將該風管118與外界連通。該側壁112之頂端形成一台 ❹階120，該台階120外高内低，以用來與該上蓋η卡合。 該侧壁112之端部還向該音腔114内凹進，從而於該下蓋 11上形成固定槽121。 請同時參照圖3，與該下蓋11相類似，該上蓋13亦包 括一底壁131以及一側壁132’該侧壁132與底壁131合圍 形成腔體133 ’该腔體133包括一音腔134以及一收容腔 135，該收容腔135大致呈圓形，以用來收容揚聲器3〇，該 底壁131上於對應該收容腔135之位置設有一圓形之通孔 136,該通孔136與該揚聲器3〇對準。該側壁132之高度 200952505 不等，其一側較高，另一側較低，從而使該上蓋13内之腔 體133形成橫截面大致呈梯形之柱體狀，使得該底壁131 與該下蓋11之底壁111間形成一銳角，此銳角等於該下蓋 11之支撐部116之頂面與該下蓋11之底壁111間形成之銳 角。該側壁132之頂端上設有一台階140，該台階140内高 外低，以用來與該下蓋11之側壁112上之台階120配合。 該側壁132之端部還向該音腔134内凹進，從而於該上蓋 13上形成固定槽141，該侧壁132向該固定槽141凸設一 第一凸耳142,該側壁132位於該收容腔135 —側還向外凸 設兩第二凸耳143，該等第一、第二凸耳142、143用來將 音箱結構固定於一電子設備（圖未示）如移動電話、電腦 上，另外，該等第一、第二凸耳142、143上還各設一橡膠 墊片144以減少音箱結構與電子設備間之振動。 該揚聲器30用來將電信號轉換為結構振動以產生聲 音，其上設有複數前出音孔31以及與該等前出音孔31相 φ對之複數後出音孔32。 組裝時，該下蓋11之侧壁112上之台階120卡設於該 上蓋13之侧壁132上之台階140内，並藉由超音波熔接之 方式將下蓋11與上蓋13結合在一起。此時，該下蓋11内 之音腔114與該上蓋13内之音腔134共同形成該音箱結構 之音腔，該下蓋11内之收容腔115與該上蓋13内之收容 腔135共同形成該音箱結構之收容腔，該揚聲器30收容於 該音箱結構之收容腔内，其設有後出音孔32之一端抵靠於 該下蓋11之收容腔115内之支撐部116上，並使後出音孔 200952505 對應該該音箱結構之音腔，該揚聲器3〇設有前出音孔 Μ ㈣於該上蓋13之通孔136外緣之底壁i3i 上，並使前出音孔31位於該上蓋13之通孔136内。 工作時，該揚聲器30由前出音孔31、後出音孔”發 出聲音，由前出音孔31發出之聲音藉由上蓋^上之通孔 36傳送至外界，由後出音孔32發出之聲音進人該音箱結 構之g腔内產生共振，並藉由下蓋之風管ιΐ8以及風 ❹孔119傳送至外界，上述分別藉由風孔ιΐ9與通孔傳 送至外界之聲音相互疊加以拓寬聲音之頻帶。 上述音箱結構中，由於該外殼1〇由鎂合金材料製成， f強度較大，不需要在外殼1〇内額外設置加強肋或增加外 殼1〇之厚度即可防止外殼10變形，亦可避免外殼由塑膠 製成時，其射出成型時所產生之問題，如塑膠縮水、變形 等。同時由於該外殼10内無需設置加強肋或增加外殼1〇 之厚度，從而使外殼1〇内之音腔之體積增加，有利於降低 ❹揚聲器30之最低諧振頻率，達到較好之低頻響應效果以提 升曰箱結構之發聲品質。另外，鎂合金材料製成之外殼1〇 可避免聲音之駐波干擾，輸入揚聲器3〇之信號停止時，聲 曰延遲之時間縮短。再者，鎂合金材料製成之外殼1〇具有 良好之散熱性能，其可將揚聲器3〇工作過程中產生之熱量 散發出去，避免音箱結構因為過熱而影響其發聲品質。 表1為發明人使用高斯磁感應計（Gauss Meter)分別 在距離圖1至圖3所示實施例中音箱結構與習知塑膠外殼 音箱結構lcm處測定之數據，由實驗可知，本發明由鎂合 200952505 金材料製成之外殼10防止揚聲器漏磁之效果比習知塑膠製 成之外殼提升約40%。 表1 漏磁量（Gauss ) 圖1至圖3所示音箱結構 0.25 習知具有塑膠外殼之音箱結構 0.4 綜上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟，以上所述者僅為本發明之較佳實施例， ❹ 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為本發明一較佳實施例之音箱結構之立體組裝圖。 圖2為圖1所示音箱結構之立體分解圖。 圖3為圖1所示音箱結構另一視角之立體分解圖。 ❹【主要元件符號說明】 外殼 10 下蓋 11 底壁 111 、 131 側壁 112、132 腔體 113 ' 133 音腔 114 、 134 收容腔 115 ' 135 支撐部 116 隔板 117 風管 118 風孑L 119 台階 120 、 140 固定槽 121 、 141 上蓋 13 通孔 136 第一凸耳 142 11 200952505 第二凸耳 143 橡膠墊片 144 揚聲器 Ο 30 前出音孔 31 後出音孔 32200952505 IX. Description of the Invention: [Technical Field] The present invention relates to a phase structure, and more particularly to a speaker structure applied to an electronic device. [Prior Art] With the rapid development of science and technology and people's demand for life, the sound box structure has been widely used in electronic devices such as mobile phones and computers.音箱 The speaker structure usually includes a housing and a speaker disposed within the housing. The speaker is used to convert electrical signals into structural vibrations to generate sound. In addition to the speaker itself, the sound quality of the speaker structure is also closely related to the outer casing of the speaker. The larger the speaker body, the air pair inside. The damping of the sound emitted by the speaker; = this can reduce the minimum spectral frequency of the speaker, so that a better low-frequency response can be achieved to improve the sound quality of the speaker structure. _ Noisy: Before, the outer casing of the speaker structure is usually made of plastic material. Because of the plastic sturdy; the width of the outer shell of the outer shell often needs to be provided with reinforcing ribs to support =:= two plus: the thickness of the shell to prevent the speaker Structural deformation, stiffening ribs or methods of increasing the thickness of the outer casing will result in a reduction in the volume of the outer casing. η directly affects the sound of the speaker structure and the problem of water-capacity in the injection molding of the plastic casing, and the guidance of the plastic casing Seat, glue, water, and special components of the enthusiasm generated by the enthusiasm of the sizzling sounds do not double hair, in addition, the plastic case will be 200952505 caused by the sound of the speaker to generate standing wave interference, broke into the signal of the scorpion When the sound is delayed for a long time. In addition, the plastic case prevents the sound of the device from being leaky. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a speaker structure suitable for use in an electronic device. A speaker structure includes a casing and a speaker provided in the casing, the casing forming a sound chamber and a receiving cavity communicating with the sound chamber. The speaker is received in the receiving cavity. Made of magnesium alloy material. In the above speaker structure, since the outer casing is made of a magnesium alloy material, the strength thereof is large, and it is not necessary to additionally provide a reinforcing rib in the outer casing or increase the thickness of the outer casing I7 to prevent deformation of the outer periphery, and since no reinforcing rib is provided in the outer casing. Or increase the thickness of the outer casing, so that the volume of the sound chamber in the outer casing is increased, and a better low-frequency response effect can be achieved to improve the sound quality of the speaker structure. ❹In addition: the outer casing made of magnesium alloy material can avoid the standing wave interference of the sound, and the time of the sound delay is shortened when the signal of the output speaker is stopped. In addition, the town U gold material system shell has & good heat dissipation performance is emitted. Also, the town alloy material = dip and the effect of preventing the leakage of the magnetic sounder is better. [Embodiment] The box structure shown in the present invention is a housing structure according to a preferred embodiment of the present invention. The structure includes a housing 1G and an anode disposed in the housing iq. 30 52 7 200952505 The housing is made of a magnesium alloy. Made of a material comprising a lower cover and an upper cover 13 in combination with the lower cover 11. The lower cover 11 and the upper cover 13 are both semi-closed. The lower cover 11 includes a bottom wall 111 and a bottom wall 11; [the periphery of the lower portion extends vertically upward to form a side wall 112. The side wall 112 and the bottom wall 111 are enclosed to form a cavity 113'. The cavity 113 includes a sound cavity 114 and a receiving cavity 5 communicating with the sound cavity 114. The receiving cavity 115 is substantially circular. The housing 30 is provided with a floor portion 116. The support portion 116 has a cross shape. The support portion 116 is integrally formed on the bottom wall m. The top surface of the support portion 116 is a sloped surface, and the bottom wall m Form an acute angle between them. A partition 117 is disposed in the sound chamber 114. The partition 117 is integrally formed on the bottom wall 111, and is surrounded by the bottom wall 111 and the side wall Π2 to form a substantially [shaped duct 118'. A wind hole 119 (shown in FIG. 3) is disposed at one end of the air duct jig. The wind hole 119 penetrates the bottom wall in and up, and communicates the air duct 118 with the outside. The top end of the side wall 112 forms a step 120 which is high in the outer portion and low in the outer portion to be engaged with the upper cover n. The end portion of the side wall 112 is also recessed into the sound chamber 114 to form a fixing groove 121 on the lower cover 11. Referring to FIG. 3, similarly to the lower cover 11, the upper cover 13 also includes a bottom wall 131 and a side wall 132. The side wall 132 and the bottom wall 131 are enclosed to form a cavity 133. The cavity 133 includes a sound chamber. 134 and a receiving cavity 135, the receiving cavity 135 is substantially circular for receiving the speaker 3A. The bottom wall 131 is provided with a circular through hole 136 at a position corresponding to the receiving cavity 135. The through hole 136 Align with the speaker 3〇. The height of the side wall 132 is not equal to 200952505, and the one side is higher and the other side is lower, so that the cavity 133 in the upper cover 13 is formed into a substantially trapezoidal cross-section, so that the bottom wall 131 and the lower side An acute angle is formed between the bottom wall 111 of the cover 11 which is equal to an acute angle formed between the top surface of the support portion 116 of the lower cover 11 and the bottom wall 111 of the lower cover 11. A step 140 is formed on the top end of the side wall 132. The step 140 is high and low inside to fit the step 120 on the side wall 112 of the lower cover 11. The end portion of the side wall 132 is further recessed into the sound chamber 134, so that a fixing groove 141 is formed on the upper cover 13. The side wall 132 protrudes from the fixing groove 141 with a first lug 142. Two second lugs 143 are also protruded outwardly from the receiving cavity 135. The first and second lugs 142, 143 are used to fix the speaker structure to an electronic device (not shown) such as a mobile phone or a computer. In addition, a rubber gasket 144 is further disposed on the first and second lugs 142 and 143 to reduce vibration between the speaker structure and the electronic device. The speaker 30 is used to convert an electrical signal into a structural vibration to produce a sound having a plurality of front sound holes 31 and a plurality of sound holes 32 aligned with the front sound holes 31. When assembled, the step 120 on the side wall 112 of the lower cover 11 is engaged in the step 140 on the side wall 132 of the upper cover 13, and the lower cover 11 and the upper cover 13 are joined by ultrasonic welding. At this time, the sound chamber 114 in the lower cover 11 and the sound chamber 134 in the upper cover 13 together form a sound chamber of the speaker structure, and the receiving cavity 115 in the lower cover 11 and the receiving cavity 135 in the upper cover 13 are formed together. a receiving cavity of the speaker structure, the speaker 30 is received in the receiving cavity of the speaker structure, and one end of the rear sounding hole 32 is disposed on the supporting portion 116 in the receiving cavity 115 of the lower cover 11 and The sound hole 200952505 corresponds to the sound chamber of the speaker structure, the speaker 3 is provided with a front sound hole Μ (4) on the bottom wall i3i of the outer edge of the through hole 136 of the upper cover 13, and the front sound hole 31 is located The upper cover 13 is in the through hole 136. During operation, the speaker 30 emits sound from the front sound hole 31 and the rear sound hole. The sound emitted by the front sound hole 31 is transmitted to the outside through the through hole 36 of the upper cover, and is emitted from the rear sound hole 32. The sound enters the cavity of the speaker structure to generate resonance, and is transmitted to the outside through the air duct ι 8 of the lower cover and the air vent 119, and the sounds respectively transmitted to the outside through the air holes ι 9 and the through holes are superimposed on each other. Widening the frequency band of the sound. In the above speaker structure, since the outer casing 1 is made of a magnesium alloy material, f is strong, and it is not necessary to additionally provide reinforcing ribs in the outer casing 1 or increase the thickness of the outer casing 1 to prevent the outer casing 10 The deformation can also avoid the problems caused by the injection molding when the outer casing is made of plastic, such as plastic shrinkage, deformation, etc. At the same time, since the outer casing 10 does not need to be provided with reinforcing ribs or increase the thickness of the outer casing 1 , the outer casing 1 is The increase of the volume of the sound chamber in the crucible is beneficial to lowering the lowest resonance frequency of the chirp speaker 30, and achieving a better low-frequency response effect to improve the sound quality of the box structure. In addition, the shell made of magnesium alloy material 1 The standing wave interference of the sound can be avoided, and the delay of the sonar delay is shortened when the signal input to the speaker 3〇 is stopped. Furthermore, the outer casing 1 made of the magnesium alloy material has good heat dissipation performance, and the speaker 3 can be operated. The heat generated in the room is dissipated to prevent the speaker structure from affecting the sound quality due to overheating. Table 1 shows the inventors using a Gauss meter to separate the speaker structure and the conventional plastic from the embodiment shown in Figures 1 to 3. According to the data measured at the lcm of the outer casing structure, it can be seen from the experiment that the outer casing 10 made of magnesium alloy 200952505 gold material has the effect of preventing the leakage of the speaker by about 40% compared with the outer casing made of the conventional plastic. Table 1 Magnetic flux leakage (Gauss) The speaker structure shown in Figure 1 to Figure 0.25 is known as a speaker structure with a plastic casing. 0.4 In summary, the present invention has indeed met the requirements of the invention patent, and patent applications are filed according to law. For the preferred embodiment of the present invention, ❹ can not limit the scope of the patent application of the present invention. Anyone familiar with the skill of the present invention is entitled to the spirit of the present invention. The equivalent modifications or variations are to be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective assembled view of a speaker structure according to a preferred embodiment of the present invention. FIG. 2 is a speaker structure of FIG. Fig. 3 is an exploded perspective view of another perspective of the speaker structure shown in Fig. 1. ❹ [Main component symbol description] Housing 10 lower cover 11 bottom wall 111, 131 side wall 112, 132 cavity 113 ' 133 sound cavity 114, 134 receiving cavity 115 ' 135 support part 116 partition 117 air duct 118 air 孑 L 119 step 120 , 140 fixing groove 121 , 141 upper cover 13 through hole 136 first lug 142 11 200952505 second lug 143 rubber gasket 144 Speaker Ο 30 Front sound hole 31 Rear sound hole 32
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