201103345 六、發明說明： 【發明所屬之技術領域】 本發明涉及一種音膜，尤其涉及一種應用於電 子裝置中之剩η八之音膜。 【先前技術】 隨著科學技術之快速發展及人們對生活之需 求，喇η八已廣泛應用於電視、電腦、移動電話等電 子裝置中。 以驅動原理方式分類，喇^八可分為動圈型、靜 電型、壓電型。目刖，動圈型制队由於具有音域寬、 成本低等優點，其應用最為普及。動圈型喇σ八通常 包括音膜、音圈及磁鐵，當音頻電流流經音圈時， 音圈受磁鐵之磁場力作用產生相應之反復運動，從 而帶動音膜產生活塞式振動，進而推動周圍之空氣 產生聲音。在其他條件相同之情況下，音膜之剛性 越強，其振動產生之徑向分割運動就會越少，失真 也就會越小，從而使得喇叭之發聲品質越高。 【發明内容】 ' 有鑒於此，有必要提供一種可降低失真之音膜 及使用該音膜之剩Π八。 一種音膜，包括設於中央之中間區及設於所述 中間區外圍之連接區，所述中間區包括位於中間之 底盤部及位於邊緣之外圍部，所述外圍部上設有凸 201103345 起。 一種喇队，包括外框、設於外框内之磁鐵、套 設於磁鐵外之音圈及結合於所述外框上音膜，所述 音圈結合於所述音膜之下表面上，所述音膜包括設 於中央之中間區及設於所述中間區外圍之連接區， 所述中間區包括位於中間之底盤部及位於邊緣之外 圍部，所述外圍部上設有凸起。 上述音膜及使用該音膜之剩队中，由於音膜之 中間區上没有凸起，所述凸起可增加音膜之剛性， 減少音膜沿徑向上之分割運動，有利於降低喇^八產 生之失真’提高°刺η八之發聲品質。 【實施方式】 圖1與圖2所示為本發明一較佳實施例之喇 叭，該喇叭包括一外框1〇、與該外框1〇結合之一 u 鐵20、设於該υ鐵20内之一磁鐵3〇、設於該磁鐵 3〇上之一華司40、設於該磁鐵30外圍之一音圈50 及結合於該外框1〇上之一音膜6〇。 5月同時參照圖2至圖4，該外框1〇包括一框體 11及與該框體u結合之一基板12。該框體η之外 輪廓為長方體狀，其上下兩端開口，中間設有一運 ^铋形之收容腔^’該框體^於該收容腔丨^内 設有—環狀之台階部112,並於該框體12之底端向 下凹進形成一出線槽113，該框體η之四角各設有 201103345 一固定孔114，以用於將該喇叭固定於一電子裝置 (圖未示）上。該基板12 —體成型於該框體u之 下側，其包括一承載座121及由該承载座121之外 圍對稱向外延伸之兩支撐臂122，該承載座ι21呈 圓環形，其中間設有一圓形之通孔123，以用於結 合泫U鐵20。該承載座121之外徑大致等於該框體 11之寬度，該承載座121之上表面之相對兩側於該 鲁 框體11之寬度方向上與該框體11結合。該兩支撐 臂122由該承載座121之外圍沿該框體u之長度方 向向外延伸，且其自由末端結合於該框體12上，靠 近該框體11之出線槽113 一端之支撐臂122上設有 一電路板124。 該ϋ鐵20大致呈碗狀，其包括一圓形之底壁 21、由該底壁21之外圍向上延伸形成之一側壁22 及形成於該底壁21與側壁22間之一收容腔23。該 • 側壁22之上端即開口一端結合於該外框10之基板 12之通孔123内。該υ鐵20之收容腔23與該外框 10之收容腔111連通。 該磁鐵30呈圓柱狀，其貼設於該U鐵20之底 壁21之上表面上。該華司4〇呈圓形薄片狀，其貼 設於該磁鐵30之上表面上。該磁鐵3〇、華司牝均 收容於該U鐵20之收容腔23内，且與該υ鐵2〇 同心設置，該磁鐵30、華司40之外徑小於該1;鐵 201103345 20之内徑，從而於該磁鐵3〇、華司4〇與該u鐵2〇 之間形成一環形之間隙321。該音圈5〇呈筒狀，其 上端粘合於該音膜60之下表面上，下端設於該環形 之間隙321内，該音圈50之出線端（圖未示）穿過 该框體11之出線槽113’並與該電路板124電連接 該音膜60之整體輪廓為運動場形薄片狀，其包 括設於中央之一中間區61、設於外緣之一結合區62 • 及連接該中間區61、結合區62之一連接區63。該 中間區61呈運動場形，其包括位於中間之一底盤部 611、位於邊緣之一外圍部612及位於該底盤部 與外圍部612間之一音圈連接部613。該底盤部6ιι 呈向上凸起之球形弧面狀，其正中央設有向下凹進 之一凹陷615’該凹陷615之内表面呈球形弧面狀。 該音圈連接部613形成於該底盤部611之外圍，並 將該底盤部611與外圍部612連接在一起，該音圈 •連接部613呈®環形平板狀’其外徑大致等於該中 間區61之寬度，該音圈連接部613與該音圈5〇對 應，該音圈50粘合於該音圈連接部613之下表面 上。該外圍部612設於該音圈連接部613之外圍， 其上設有一對由熱壓形成之凸起616,該對凸起616 對稱設置’其由該音圈連接部613之相對兩侧分別 由内=外先向上傾斜延伸然後再向下傾斜延伸形 成，每一=起616向上傾斜之角度小於其向下傾斜 之角度，每一凸起616之頂端形成一弧形之頂部 201103345 617,該對凸起616之頂部617之正面投影即沿音膜 60軸向上之投影合圍形成一橢圓。該連接區呈 跑道形，其環繞於該中間區61之外圍部612之外 圍，該連接區63之中間向上凸起形成弧面狀。該結 合區62形成於該連接區63之外圍，其為環形平板 狀，該結合區62貼設於該外框1 〇之台階部112上， 以將該音膜60固定於該外框上。 • 上述喇叭中，其音膜60之中間區61上設有凸 起616，該等凸起616可增加音膜6〇之剛性，防止 音膜60在振動時變形，減少音膜6〇沿徑向上之分 割運動有利於降低該喇„八產生之失真，提高喇叭 之發聲品質。另外，每—凸起616由該音圈連接部 613向外先向上傾斜再向下傾斜延伸形成其向上 傾斜之角度小於其向下傾斜之角度，可㈣p八具有 S頻回應與低頻回應較為協調，可進一步提高剩口八 »之發聲品質。再者’當剩„八工作時，其音膜6〇向上 或向下振_間，空氣並未能快速及時地進入外框 ίο之收容腔m内或排出外框1〇之收隸m外， 從而使得在此瞬間外框10之收容腔m内之空以 劇伸張或I缩’形成較大之麗力，很容易導致音膜 60在此瞬間急劇變形，而由於上述音膜60之中間 區61之底盤部611呈向I-几如 1 Π上凸起之球形弧面狀，底盤 部611之中央向下凹進形成凹陷615,其有利於增 加音膜60之剛性’可防止音膜6〇向上或向下振動 201103345 瞬間急劇變形’可進—步降低該私產生之失真 提高喇叭之發聲品質。 綜上所述，本發明符合發明專利之要件，爰依 法提出專射請。惟以上所述者僅為本發明之較佳 實施例’舉凡熟悉本案技藝之人士，在練本發明 精神所作之等效修飾或變化，皆應涵蓋於以下 請專利範圍内。201103345 VI. Description of the Invention: [Technical Field] The present invention relates to a sound film, and more particularly to a sound film of the remaining VIII applied to an electronic device. [Prior Art] With the rapid development of science and technology and people's needs for life, La N-8 has been widely used in electronic devices such as televisions, computers, and mobile phones. Classified by the principle of driving, La^8 can be divided into moving coil type, static type and piezoelectric type. It is seen that the dynamic circle type has the most popular application because of its wide range and low cost. The moving coil type σ 八 八 usually includes a sound film, a voice coil and a magnet. When the audio current flows through the voice coil, the voice coil is subjected to the repetitive motion of the magnetic field force of the magnet, thereby causing the diaphragm to generate piston vibration and then pushing. The surrounding air produces sound. Under the same conditions, the stronger the rigidity of the sound film, the less the radial segmentation motion will be generated by the vibration, and the smaller the distortion, so that the sound quality of the speaker is higher. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a sound film that can reduce distortion and the use of the sound film. A sound film comprising a central portion disposed at a central portion and a connecting portion disposed at a periphery of the intermediate portion, the intermediate portion including a chassis portion at the middle and a peripheral portion at the edge, the peripheral portion having a protrusion from 201103345 . A racquet, comprising an outer frame, a magnet disposed in the outer frame, a voice coil sleeved outside the magnet, and a sound film coupled to the outer frame, the voice coil being coupled to the lower surface of the sound film, The sound film includes a central portion disposed at a central portion and a connecting portion disposed at a periphery of the intermediate portion. The intermediate portion includes a chassis portion at the middle and a peripheral portion at the edge, and the peripheral portion is provided with a protrusion. In the above sound film and the remaining team using the sound film, since there is no protrusion on the middle portion of the sound film, the protrusion can increase the rigidity of the sound film, and reduce the segmentation movement of the sound film in the radial direction, which is advantageous for reducing the pull of the sound film. The distortion produced by the eight's improved the sound quality of the thorns. [Embodiment] FIG. 1 and FIG. 2 show a horn according to a preferred embodiment of the present invention. The horn includes an outer frame 1 〇, and a yoke 20 combined with the outer frame 1 、, and is disposed on the stellite 20 One of the magnets 3〇, one of the washers 40 disposed on the magnet 3〇, a voice coil 50 disposed on the periphery of the magnet 30, and a sound film 6〇 coupled to the outer frame 1〇. Referring to FIG. 2 to FIG. 4 in May, the outer frame 1 includes a frame 11 and a substrate 12 combined with the frame u. The outer frame of the frame body η has a rectangular parallelepiped shape, and the upper and lower ends thereof are open, and a receiving cavity is formed in the middle of the frame body. The frame body is provided with an annular step portion 112 in the receiving cavity. And the bottom end of the frame body 12 is recessed downwardly to form a wire slot 113. The four corners of the frame body η are respectively provided with a fixing hole 114 of 201103345 for fixing the horn to an electronic device (not shown). )on. The substrate 12 is integrally formed on the lower side of the frame u, and includes a carrier 121 and two support arms 122 extending symmetrically outward from the periphery of the carrier 121. The carrier ι 21 is annular, and the middle portion thereof A circular through hole 123 is provided for bonding the 泫U iron 20. The outer diameter of the bearing frame 121 is substantially equal to the width of the frame body 11. The opposite sides of the upper surface of the bearing block 121 are combined with the frame body 11 in the width direction of the frame body 11. The two support arms 122 extend outwardly from the periphery of the frame body u along the length of the frame u, and the free ends thereof are coupled to the frame body 12, and are adjacent to the support arm at one end of the wire slot 113 of the frame body 11. A circuit board 124 is disposed on the 122. The neodymium iron 20 is substantially bowl-shaped and includes a circular bottom wall 21 extending upward from a periphery of the bottom wall 21 to form a side wall 22 and a receiving cavity 23 formed between the bottom wall 21 and the side wall 22. The upper end of the side wall 22, that is, the open end is coupled to the through hole 123 of the substrate 12 of the outer frame 10. The receiving cavity 23 of the neodymium iron 20 communicates with the receiving cavity 111 of the outer frame 10. The magnet 30 has a cylindrical shape and is attached to the upper surface of the bottom wall 21 of the U-iron 20. The washer 4 has a circular flaky shape and is attached to the upper surface of the magnet 30. The magnets 3〇 and 华 牝 are respectively accommodated in the receiving cavity 23 of the U-iron 20, and are disposed concentrically with the yttrium iron 2, the outer diameter of the magnet 30 and the huasi 40 is smaller than the 1; the iron 201103345 20 The diameter is such that an annular gap 321 is formed between the magnet 3〇, the washer 4〇 and the u-iron 2〇. The voice coil 5 is cylindrical, the upper end of which is adhered to the lower surface of the sound film 60, and the lower end is disposed in the gap 321 of the ring. The outlet end of the voice coil 50 (not shown) passes through the frame. The outlet slot 113' of the body 11 is electrically connected to the circuit board 124. The overall contour of the sound film 60 is a moving field-shaped lamella, which includes a central portion 61 disposed at the center and a bonding region 62 disposed at the outer edge. And connecting the intermediate zone 61 and one of the bonding zones 62 to the connection zone 63. The intermediate portion 61 has a moving field shape and includes a chassis portion 611 located in the middle, a peripheral portion 612 at one of the edges, and a voice coil connecting portion 613 between the chassis portion and the peripheral portion 612. The chassis portion 6 is formed in an upwardly convex spherical arc shape, and has a recessed portion 615' recessed downward in the center thereof. The inner surface of the recess 615 has a spherical arc shape. The voice coil connecting portion 613 is formed at the periphery of the chassis portion 611, and connects the chassis portion 611 and the peripheral portion 612. The voice coil and the connecting portion 613 are in the shape of an annular plate, and the outer diameter thereof is substantially equal to the intermediate portion. The voice coil connecting portion 613 corresponds to the voice coil 5A, and the voice coil 50 is bonded to the lower surface of the voice coil connecting portion 613. The peripheral portion 612 is disposed on the periphery of the voice coil connecting portion 613, and is provided with a pair of protrusions 616 formed by hot pressing, and the pair of protrusions 616 are symmetrically disposed by the opposite sides of the voice coil connecting portion 613 From the inner side to the outer side, the upper side is inclined upwardly and then extended downwardly. The angle of each downward 616 is inclined less than the downward tilting angle, and the top end of each protrusion 616 forms a curved top portion 201103345 617. The front projection of the top 617 of the projection 616, that is, the projection along the axial direction of the sound film 60, forms an ellipse. The connecting portion is in the shape of a racetrack, which surrounds the peripheral portion 612 of the intermediate portion 61, and the middle portion of the connecting portion 63 is convex upward to form a curved surface. The bonding region 62 is formed on the periphery of the connecting portion 63, and has an annular flat plate shape. The bonding portion 62 is attached to the step portion 112 of the outer frame 1 to fix the sound film 60 to the outer frame. In the above horn, the middle portion 61 of the sound film 60 is provided with a protrusion 616, which can increase the rigidity of the sound film 6〇, prevent the sound film 60 from being deformed during vibration, and reduce the diameter of the sound film 6〇. The upward splitting motion is advantageous for reducing the distortion generated by the larva and improving the sound quality of the horn. In addition, each of the protrusions 616 is inclined upward by the voice coil connecting portion 613 and then inclined downward to form an upward tilting. The angle is smaller than the angle at which it is tilted downwards. (4) p8 has an S-frequency response and is more coordinated with the low-frequency response, which can further improve the sound quality of the remaining eight». In addition, when there are eight working, the sound film is 6〇 up or During the downward vibration, the air does not enter the outer cavity of the outer frame ίο or the outer frame of the outer frame, so that the air in the receiving cavity m of the outer frame 10 is instantaneously It is easy to cause the sound film 60 to be sharply deformed at this moment, and the chassis portion 611 of the intermediate portion 61 of the above-mentioned sound film 60 is convex toward the I-like one. The spherical arc shape, the center of the chassis portion 611 is recessed downward to form a concave shape 615, which is beneficial to increase the rigidity of the diaphragm 60 'prevented from vibrating diaphragm 6〇 sharply upward or downward instantaneous deformation 201103345' into the can - be further reduced to improve the distortion of the sound quality generated private speakers. In summary, the present invention complies with the requirements of the invention patent, and the special law is requested by the law. The above description is only the preferred embodiment of the present invention. Any equivalent modifications or variations made by those skilled in the art will be covered by the following claims.
【圖式簡單說明】 圖1為本發明-較佳實施例之味卜八之立體組襄 圖。 圖2為圖1所示喇叭沿II-II線之剖面圖 圖3為圖1所示剩D八之主視圖。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a three-dimensional group of the taste of the preferred embodiment of the present invention. 2 is a cross-sectional view of the horn of FIG. 1 taken along line II-II. FIG. 3 is a front view of the remaining D VIII shown in FIG.
圖4為圖1所示制π八之立體分解 【主要元件符號說明】 外框 10 收容腔 111 出線槽 113 暴板 12 支撐臂 122 電路板 124 底壁 21 收容腔 23 間隙 321 基板 11 台階部 112 固定孔 114 承載座 121 通孔 123 U鐵 20 側壁 22 磁鐵 30 華司 404 is a three-dimensional exploded view of the π eight shown in FIG. 1 [main element symbol description] outer frame 10 housing cavity 111 outlet slot 113 slab 12 support arm 122 circuit board 124 bottom wall 21 housing cavity 23 gap 321 substrate 11 step 112 fixing hole 114 bearing seat 121 through hole 123 U iron 20 side wall 22 magnet 30 Huawei 40
201103345 音圈 50 音膜 60 中間區 61 底盤部 611 外圍部 612 音圈連接部 613 凹陷 615 凸起 616 頂部 617 結合區 62 連接區 63201103345 Voice coil 50 Sound film 60 Middle section 61 Chassis section 611 Peripheral section 612 Voice coil connection 613 Recessed 615 Raised 616 Top 617 Bonding area 62 Connection area 63
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