201010249 九、發明說明： 【發明所屬之技術領域】 . 本發明涉及鏡頭模組驅動技術領域，尤其涉及一種音 #圈馬達。 【先前技術】 音圈馬達具有體積小、用電量少及價格低廉等優點， 適合作為電子產品如數位相機、手機、數位攝影機等之驅 ❹動器，請參見文獻：Design of a voice coil motor used in the focusing system of a digital video camera 5 Magnetics, IEEE Transactions on Volume 41， Issue 10， Oct. 2005 Page(s):3979-3981 ° 音圈馬達通常由磁性件與線圈組配合設置，藉由改變 流經線圈組之電流大小、方向及上下彈片之彈簧拉伸回復 力特性，而達成可操控調整上下位移或復位等對焦功效。 常見之音圈馬達主要包括固定架、裝筒、彈片及磁性 ❿件。該固定架通常為方體狀框架結構，其包括複數一體成 型且首尾相連之邊框，該複數邊框圍合形成用於裝設裝筒 之收容腔。該裝筒用以裝設鏡筒、對焦鏡片組或變焦鏡片 組，其外侧壁纏繞有線圈組。該彈片嵌設於固定架侧壁， 用以保護音圈馬達。當線圈組通電後，該線圈組產生磁場， 該磁場與磁性件之磁場相互作用，產生可移動裝筒之驅動 力而改變鏡筒或對焦鏡片組或變焦鏡片組與影像感測器之 間距，進而達成對焦或變焦之功能。 201010249 惟’由於該音圈馬達之固定架為一體成型結構，組裝 音圈馬達時需先將裝筒置於固定架之收容腔内再將磁性件 •固定於固定架側壁，極易造成磁性件滑離固定架或磁性件 -與裝筒間距過小而引起後續裝筒不能移動。且，固定架之 邊框厚度有限’以致成型加工該框架難度較高，易產生大 量不合格產品，變相增加製作成本。 有鑑於此，提供一種結構簡單、組裝方便之音圈馬達 以提高組裝效率及產品良率實為必要。 【發明内容】 以下結合實施例說明一種結構簡單、組裝方便之音圈 馬達。 該音圈馬達包括外殼、磁鐵、兩彈片及活動元件。該 外威包括頂板及分別連接於頂板邊緣之侧板。該兩彈片相 互隔開，由此與侧板配合形成用於收容該活動組件之第一 容置腔。該磁鐵固定於該側板内壁，位於該兩彈片之間， ®並環繞該活動元件。 本技術方案之音圈馬達將磁體直接固定於外殼側板之 内壁，結構簡單，由此便於生產及組裝音圈馬達。 【實施方式】 以下將結合實施例及附圖對本技術方案提供之音圈馬 達進一步說明。 請一併參閱圖1至圖3,本發明實施例所提供之音圈馬 201010249 達100包括外殼20、固定元件30、活動元件40及兩彈片 50 ° . 外殼20由導磁材料製成，用以吸附固定組件30中之 . 磁鐵。為消除外部電磁對音圈馬達100之干擾並防止該音 圈馬達100之電磁影響外部電子元件之工作，可於外殼20 之外表面塗覆電磁遮罩材料，如鎳鐵合金、導電塑膠、表 面導電材料或導電玻璃。另，外殼20亦可由電磁遮罩材料 製成。外殼20包括頂板21及四個分別連接於頂板21邊緣 _之侧板22。頂板21及四個側板22圍合形成用以容置固定 元件30、活動元件40及兩彈片50之收容腔212。該頂板 21開設有貫通其相對兩表面之入光孔211以使光線射入鏡 頭模組（圖未示）中。 請一併參閱圖2及圖3，固定組件30為方形筒狀體， 其包括固定架31及設於外殼20之侧板22内壁並夾持於固 定架31侧壁之四塊磁鐵32。固定元件30設有用於收容活 動組件40之第一容置腔301。 固定架31為呈方形之框架結構，其包括一固定板311、 四定位柱312及基座313。其中，四定位柱312設於固定板 311及基座313之間，且每個定位柱312之一端穿設於固定 板311，另一端收容於基座313，由此每相鄰兩定位柱312 與固定板311之一邊框及基座313之一邊框配合形成一置 磁腔314。 具體地，請一併參閱圖2及圖3，固定板311呈方型框 體，其包括四條首尾相連之邊框，且每相鄰兩邊框之相交 201010249 區域均設置有一定位孔3111。每個定位孔3111之中軸線平 行於第一容置腔301之中轴線，其用以穿設定位柱312之 .一端，以使定位柱312與固定板311相連。 - 基座313與固定板311相對設置，其用於與固定板311 配合固定四定位柱312於基座313及固定板311相對之兩 内側，從而與固定板311及四定位柱312配合形成置磁腔 314。基座313還用於與外殼20配合形成前述收容腔212， 以收容固定板311、四定位柱312、磁鐵32、活動組件40 ❹及兩彈片50。同固定板311，基座313亦為框體結構，其 包括四條首尾相連之邊框，且每相鄰兩邊框之相交區域均 設有一限位槽3131，每個限位槽3131用以收容定位柱312 之另一端，以使定位柱312與基座313相連。另，基座313 之各邊框亦可設置凹槽，以便於後續組裝音圈馬達時向該 凹槽内填膠而進一步定位磁鐵32。 請一併參閱圖3及圖4,定位柱第一端部主體第二端部 312包括第一端部3121、主體3122及第二端部3123。主體 參3122包括第一端面3223、與第一端面3223相對之第二端 面3224及位於第一端面3223與第二端面3224之間並分別 與第一端面3223及第二端面3224相連之側表面3225。第 一端部3121及第二端部3123分別連接主體3122於第一端 面3223及第二端面3224，且第一端部3121 —端穿設於定 位孔3111，第二端部3123 —端收容於限位槽3131。 主體3122自側表面3225向其内部開設有定位槽 3226。定位槽3226貫通第一端面3223及第二端面3224， 201010249 其尺寸及形狀與磁鐵32匹配，用於收容磁鐵32之一端部。 由此每相鄰兩主體3122相互配合將磁鐵32夾持於該兩主 • 體3122之間。 . 另，固定架31可包括兩相對設置之固定板311及四個 兩端分別穿設於兩固定板311之定位孔3111中之定位柱 312，而不包括基座313。各定位柱312以一端穿設於定位 孔3111並收容於基座313之限位槽3131之方式與基座313 相連。 ❹ 定位柱312之第一端部3121、主體3122及第二端部 3123可一體成型，還可第一端部3121與主體3122形成一 整體，且兩端分別貫通第二端部3123之第一端面3223及 第二端面3224，即第一端部3121與主體3122穿設於第二 端部3123。定位槽3226可不貫通第一端面3223及第二端 面3224，只要其能收容磁鐵32之一端部。進一步地，定位 柱312之側表面3225可不設置定位槽3226，但定位柱312 之侧表面3225之尺寸及形狀應滿足穩固夾持磁鐵32。 ® 磁鐵32固定於側板22之内壁，並位於兩彈片50之間， 與置磁腔314相對，且環繞活動組件40。當外殼20由導磁 材料製成時，磁鐵32可由其與側板22之間之磁性吸引力 而得以固定。當然，可直接採用點膠形式將磁鐵32固定於 侧板22之内壁。 請一併參閱圖2、圖3及圖6，活動組件40裝設於固 定組件30之第一容置腔301中。活動組件40包括裝筒41 及纏繞於裝筒41外側壁之線圈42。 9 201010249 裝筒41為方形筒狀體，其具有底面413及與底面413 相對之頂面414。裝筒41設有呈圓柱形且貫通底面413及 • 頂面414之第二容置腔411。第二容置腔411用於收容鏡頭 . 模組。 裝筒41之頂面414及底面413之頂角區分別設有四凸 柱412。每個凸柱412自裝筒41之底面413或頂面414沿 平行於裝筒41中心軸線之方向延伸。凸柱412用以後續固 定彈片50，以使彈片50鋪設於裝筒41之底面413及頂面 ❿414。另，該凸柱412可單獨成型，再藉由膠合黏接、螺接 等其它固接方法與裝筒41固接成一體。 請一併參閱圖2、圖4及圖5,彈片50包括平板51。 平板51呈矩形，其具有首尾相連之第一侧邊51a、第二側 邊51b、第三侧邊51c及第四側邊51d。平板51之幾何中 心開設有一透光孔510，以使光線通過。 平板51之四頂角區分別設置有限位孔58。限位孔58 用於穿設第一端部3121或主體3123，以將兩彈片50分別 ® 固定於固定板311與活動元件30之間及基座313與活動元 件30之間。於限位孔58與透光孔510之間之區域内，圍 繞透光孔510設置有形狀相同之第一溝槽52、第二溝槽 53、第三溝槽54及第四溝槽55。相鄰兩溝槽之間分別形成 有均大致呈“L”形之第一伸縮部57a、第二伸縮部57b、 第三伸縮部57c及第四伸縮部57d。 為簡化說明，下面僅以第一溝槽52、第二溝槽53及第 一伸縮部57a為例說明彈片50結構。 201010249 第一溝槽52具有與第一側邊51a平行之第一起始段 52a、與第三側邊51c平行且與第一起始段52a相對之第一 - 結束段52b及位於第一起始段52a與第一結束段52b之間 • 且與第二側邊51b平行之第一連接段52c。其中，第一結束 段52b之長度小於或等於第一起始段52a之長度。 第二溝槽53具有與第二側邊51b平行之第二起始段 53a、與第四側邊51d平行且與第二起始段53a相對之第二 結束段53b及位於第二起始段53a與第二結束段53b之間 參且與第三側邊51c平行之第二連接段53c。其中，第二結束 段53b之長度小於或等於第二起始段53a之長度。該第二 起始段53a及第二連接段53c位於第一溝槽52之外侧，從 而與第一溝槽52之第一連接段52c及第一結束段52b之間 形成大致呈“L”形之第一伸縮部57a。第一伸縮部57a由 第一連接段52c與第二起始段53a之間之部分由圓弧段過 渡到第一結束段52b與第二連接段53c之間之部分，即第 一伸縮部57a轉彎處具有圓弧結構。 第一伸縮部57a、第二伸縮部57b、第三伸縮部57c、 第四伸縮部57d受外力時被撓曲變形，當外力消失後，其 均可恢復原始狀態。 平板51還包括四個位於透光孔510與各溝槽之間之連 接部56。以其中一連接部56為例，其位於透光孔510與第 一結束段52b及第一連接段52 c之間。每個連接部56均設 置有貫通孔561。貫通孔561用於穿設凸柱412，而固定彈 片50於裝筒41。 11 201010249 另，第一溝槽52、第二溝槽53、第三溝槽54及第四 溝槽55之形狀及各溝槽之數目並不限於本實施例之形狀及 - 個數，亦可為其它形狀，如圓弧形。 . 組裝本實施例之音圈馬達時，需按以下步驟進行：首 先，將一彈片50置於基底313，且使限位孔58與基底313 之限位槽3131相對，將各定位柱312之一端分別收容於限 位孔58及限位槽3131中；將活動元件40置於該彈片50 上，並使裝筒41之第二容置腔411與彈片50之透光孔510 β 相通；將磁鐵32固定於侧板22之内壁，且使其兩端部置 於相鄰兩定位柱312之間；將另一彈片50置於裝筒41上， 將固定板311置於該彈片50上，使裝筒41之凸柱412穿 設於彈片50之貫通孔561，且定位柱312之另一端穿設於 彈片50之限位孔58及固定板311之定位孔3111 ;向限位 槽3131内及限位孔58、貫通孔561、及定位孔3111内淋 膠；將外殼20與基底313配合，向兩者連接部淋膠即可。 本實施例之音圈馬達具有以下優點：採用分體式之固 ®定板、定位柱及基底組裝形成固定架，利於生產固定架元 件及組裝音圈馬達；基底既起與固定板及定位柱配合形成 固定架之作用，又起與外殼配合形成收容腔之作用，由此 不用設置兩個固定板來與定位柱形成固定架，從而簡化了 音圈馬達之結構並節省了原料。 為進一步簡化結構，本實施例之音圈馬達100可不設 置定位柱312來夾持定位磁鐵32及彈片50,而直接以黏膠 之方式將固定板3111及磁鐵32黏附於外殼20之各側板22 12 201010249 之内壁，使磁鐵32環繞活動如丛 定於磁鐵32之如▲動件 且將彈片5〇直接固 疋於磁鐵32之相對兩表面。此卑 片50與跡22圍合之腔體。谷置腔對應於兩彈 之間設置絕緣材料層如絶緣漆锅還絡可於彈片5〇與磁鐵32 電後峻 4…二 絕緣塑膠等元件來避免通 電後線圈42中之電流經彈片50流至磁鐵32。 提出Γ明確已符合發明專利之要件，遂依法 =出=…惟，以上所述者僅為本發明之較佳實施方 式 自不月fc*以此限制本案之申士主蚕 枯蓺夕A丄甲明專利範圍。舉凡熟悉本案 技β之人士极依本發明之精袖 廡m + 神所作之等效修飾或變化，皆 應涵羞於以下申請專利範圍内。 【圖式簡單說明】 =1係本發明實施例提供之音圏馬達之立體示意圖。 圖2係圖1所示之音圈馬達之分解圖。 ^3係圖1所示之音圈馬達之固定組件之示意圖。 係圖3所示之固^組件之定位柱之示意圖。 圖5係圖1所示之音圈馬達甲活動裝筒之示意圖。 圖6係圖！所示之音圈馬達中彈片之示意圖。 【主要元件符號說明】 音圈馬達 100 外殼 20 固定組件 30 40 活動組件 彈片 13 50 201010249 頂板 21 側板 22 - 收容腔 212 * 入光孔 211 固定架 31 磁鐵 32 第一容置腔 301 固定板 311 ❿ 定位柱 312 基底 313 置磁腔 314 定位孔 3111 限位槽 3131 第一端部 3121 主體 3122 第二端部 3123 第一端面 3223 第—端面 3224 侧表面 3225 定位槽 3226 線圈 42 底面 413 頂面 414 第二容置腔 411 14 201010249 凸柱 412 平板 51 • 第一側邊 51a - 第二側邊 51b 第三側邊 51c 第四側邊 51d 透光孔 510 限位孔 58 ⑩第一溝槽 52 第二溝槽 53 第三溝槽 54 第四溝槽 55 第一伸縮部 57a 第二伸縮部 57b 第三伸縮部 57c 第四伸縮部 57d 響第一起始段 52a 第一結束段 52b 第一連接段 52c 第二起始段 53a 第二結束段 53b 第二連接段 53c 連接部 56 貫通孔 561 15201010249 IX. Description of the invention: [Technical field of the invention] The present invention relates to the field of lens module driving technology, and more particularly to an acoustic ring motor. [Prior Art] The voice coil motor has the advantages of small size, low power consumption, and low price. It is suitable as a drive for electronic products such as digital cameras, mobile phones, digital cameras, etc., please refer to the literature: Design of a voice coil motor Used in the focusing system of a digital video camera 5 Magnetics, IEEE Transactions on Volume 41, Issue 10, Oct. 2005 Page(s): 3979-3981 ° The voice coil motor is usually set by the magnetic member and the coil set, by changing The magnitude and direction of the current flowing through the coil set and the spring tensile restoring force characteristics of the upper and lower shrapnel are achieved, and the focusing effect such as up-and-down displacement or resetting can be achieved. Common voice coil motors mainly include fixed frames, barrels, shrapnel and magnetic components. The holder is generally a square frame structure comprising a plurality of integrally formed frames that are connected end to end, the plurality of frames being enclosed to form a receiving cavity for mounting the cartridge. The cartridge is used to mount a lens barrel, a focus lens group or a zoom lens group, and the outer side wall is wound with a coil group. The elastic piece is embedded in the side wall of the fixing frame to protect the voice coil motor. When the coil set is energized, the coil set generates a magnetic field that interacts with the magnetic field of the magnetic member to generate a driving force of the movable cartridge to change the distance between the lens barrel or the focus lens group or the zoom lens group and the image sensor. In turn, the focus or zoom function is achieved. 201010249 Only because the fixing frame of the voice coil motor is a one-piece structure, when assembling the voice coil motor, the charging cylinder must be placed in the receiving cavity of the fixing frame and then the magnetic member is fixed on the side wall of the fixing frame, which is easy to cause magnetic parts. Sliding away from the holder or magnetic member - the distance from the barrel is too small to cause the subsequent barrel to move. Moreover, the thickness of the frame of the fixing frame is limited, so that the forming of the frame is difficult, and a large number of unqualified products are easily generated, which increases the manufacturing cost in disguise. In view of this, it is necessary to provide a voice coil motor with a simple structure and easy assembly to improve assembly efficiency and product yield. SUMMARY OF THE INVENTION A voice coil motor having a simple structure and convenient assembly will be described below with reference to the embodiments. The voice coil motor includes a housing, a magnet, two shrapnel and a movable element. The outer panel includes a top panel and side panels that are respectively connected to the edge of the top panel. The two shrapnels are spaced apart from each other, thereby cooperating with the side panels to form a first receiving cavity for receiving the movable component. The magnet is fixed to the inner wall of the side plate between the two elastic pieces, and surrounds the movable element. The voice coil motor of the present invention directly fixes the magnet to the inner wall of the side panel of the outer casing, and has a simple structure, thereby facilitating the production and assembly of the voice coil motor. [Embodiment] Hereinafter, the voice coil motor provided by the present technical solution will be further described with reference to the embodiments and the accompanying drawings. Referring to FIG. 1 to FIG. 3 together, the voice coil horse 201010249 up to 100 according to the embodiment of the present invention includes a housing 20, a fixing component 30, a movable component 40 and two elastic pieces 50°. The outer casing 20 is made of a magnetic conductive material. To adsorb the magnet in the fixing assembly 30. In order to eliminate the interference of the external electromagnetic to the voice coil motor 100 and prevent the electromagnetic of the voice coil motor 100 from affecting the operation of the external electronic components, an electromagnetic shielding material such as a nickel-iron alloy, a conductive plastic, and a surface conductive may be coated on the outer surface of the outer casing 20. Material or conductive glass. Alternatively, the outer casing 20 can be made of an electromagnetic shielding material. The outer casing 20 includes a top plate 21 and four side plates 22 respectively connected to the edges of the top plate 21. The top plate 21 and the four side plates 22 are enclosed to form a receiving cavity 212 for receiving the fixing member 30, the movable member 40 and the two elastic pieces 50. The top plate 21 is provided with light-injecting holes 211 extending through opposite surfaces thereof to allow light to enter the lens module (not shown). Referring to FIG. 2 and FIG. 3 together, the fixing assembly 30 is a square cylindrical body including a fixing frame 31 and four magnets 32 disposed on the inner wall of the side plate 22 of the outer casing 20 and sandwiched between the side walls of the fixing frame 31. The fixing member 30 is provided with a first accommodating chamber 301 for accommodating the movable assembly 40. The fixing frame 31 is a square frame structure, and includes a fixing plate 311, four positioning posts 312 and a base 313. The four positioning posts 312 are disposed between the fixing plate 311 and the base 313, and one end of each positioning post 312 is disposed on the fixing plate 311, and the other end is received in the base 313, thereby each adjacent two positioning posts 312. A magnetic cavity 314 is formed in cooperation with a frame of the fixing plate 311 and a frame of the base 313. Specifically, please refer to FIG. 2 and FIG. 3 together, the fixing plate 311 is a square frame, which comprises four borders connected end to end, and each of the adjacent two borders is provided with a positioning hole 3111 in the 201010249 area. The central axis of each of the positioning holes 3111 is parallel to the central axis of the first accommodating cavity 301, and is used to pass through one end of the positioning post 312 to connect the positioning post 312 with the fixing plate 311. The pedestal 313 is disposed opposite to the fixing plate 311, and is configured to cooperate with the fixing plate 311 to fix the four positioning posts 312 on opposite sides of the base 313 and the fixing plate 311, so as to be formed in cooperation with the fixing plate 311 and the four positioning posts 312. Magnetic cavity 314. The base 313 is further configured to cooperate with the outer casing 20 to form the receiving cavity 212 to receive the fixing plate 311, the four positioning posts 312, the magnet 32, the movable assembly 40, and the two elastic pieces 50. The same as the fixing plate 311, the base 313 is also a frame structure, and includes four frames connected end to end, and a matching slot 3131 is defined in the intersection of each adjacent two frames, and each limiting slot 3131 is used for receiving the positioning post. The other end of the 312 is such that the positioning post 312 is coupled to the base 313. In addition, the frames of the base 313 may also be provided with grooves to facilitate the positioning of the magnets 32 when the voice coil motor is subsequently assembled. Referring to FIG. 3 and FIG. 4 together, the first end body second end portion 312 of the positioning post includes a first end portion 3121, a main body 3122 and a second end portion 3123. The main body 3122 includes a first end surface 3223, a second end surface 3224 opposite to the first end surface 3223, and a side surface 3225 between the first end surface 3223 and the second end surface 3224 and connected to the first end surface 3223 and the second end surface 3224, respectively. . The first end portion 3121 and the second end portion 3123 are respectively connected to the first end surface 3223 and the second end surface 3224 of the main body 3122, and the first end portion 3121 is disposed at the end of the positioning hole 3111, and the second end portion 3123 is received at the end. Limiting slot 3131. The main body 3122 is provided with a positioning groove 3226 from the side surface 3225 to the inside thereof. The positioning groove 3226 penetrates through the first end surface 3223 and the second end surface 3224. The size and shape of the 201010249 are matched with the magnet 32 for receiving one end of the magnet 32. Thereby, each adjacent two main bodies 3122 cooperate with each other to sandwich the magnet 32 between the two main bodies 3122. In addition, the fixing frame 31 may include two oppositely disposed fixing plates 311 and four positioning posts 312 which are respectively disposed in the positioning holes 3111 of the two fixing plates 311, and do not include the base 313. Each of the positioning posts 312 is connected to the base 313 so as to be inserted into the positioning hole 3111 at one end and received in the limiting groove 3131 of the base 313. The first end portion 3121, the main body 3122 and the second end portion 3123 of the positioning post 312 may be integrally formed, and the first end portion 3121 and the main body 3122 may be integrally formed, and the two ends respectively penetrate the first end of the second end portion 3123. The end surface 3223 and the second end surface 3224, that is, the first end portion 3121 and the main body 3122 are bored through the second end portion 3123. The positioning groove 3226 may not penetrate the first end surface 3223 and the second end surface 3224 as long as it can accommodate one end of the magnet 32. Further, the side surface 3225 of the positioning post 312 may not be provided with the positioning groove 3226, but the side surface 3225 of the positioning post 312 is sized and shaped to satisfy the stable clamping magnet 32. The magnet 32 is fixed to the inner wall of the side plate 22 and is located between the two elastic pieces 50 opposite to the magnetic chamber 314 and surrounds the movable assembly 40. When the outer casing 20 is made of a magnetically permeable material, the magnet 32 can be secured by its magnetic attraction between the side plates 22. Of course, the magnet 32 can be directly attached to the inner wall of the side panel 22 by dispensing. Referring to FIG. 2, FIG. 3 and FIG. 6, the movable component 40 is installed in the first accommodating cavity 301 of the fixing component 30. The movable assembly 40 includes a loading cylinder 41 and a coil 42 wound around the outer side wall of the loading cylinder 41. 9 201010249 The cartridge 41 is a square cylindrical body having a bottom surface 413 and a top surface 414 opposite the bottom surface 413. The cartridge 41 is provided with a second accommodating cavity 411 which is cylindrical and penetrates the bottom surface 413 and the top surface 414. The second accommodating cavity 411 is used for accommodating a lens. The top corners 414 of the loading cylinder 41 and the top corner areas of the bottom surface 413 are respectively provided with four projections 412. Each of the studs 412 extends from the bottom surface 413 or the top surface 414 of the loading cylinder 41 in a direction parallel to the central axis of the drum 41. The stud 412 is used to subsequently fix the elastic piece 50 so that the elastic piece 50 is laid on the bottom surface 413 and the top surface ❿ 414 of the loading cylinder 41. In addition, the stud 412 can be separately formed, and then fixed to the barrel 41 by other fixing methods such as gluing, screwing, and the like. Referring to FIG. 2, FIG. 4 and FIG. 5 together, the elastic piece 50 includes a flat plate 51. The flat plate 51 has a rectangular shape with a first side 51a, a second side 51b, a third side 51c and a fourth side 51d which are connected end to end. A light transmission hole 510 is defined in the geometric center of the flat plate 51 to allow light to pass therethrough. A limited hole 58 is provided in each of the four corner regions of the flat plate 51. The limiting hole 58 is configured to pass through the first end portion 3121 or the main body 3123 to fix the two elastic pieces 50 respectively between the fixing plate 311 and the movable member 30 and between the base 313 and the movable member 30. In a region between the limiting hole 58 and the light transmitting hole 510, a first groove 52, a second groove 53, a third groove 54, and a fourth groove 55 having the same shape are disposed around the light transmitting hole 510. A first elasticized portion 57a, a second elasticized portion 57b, a third elasticized portion 57c, and a fourth expanded and contracted portion 57d each having a substantially "L" shape are formed between adjacent grooves. For simplification of the description, the structure of the elastic piece 50 will be described below by taking only the first groove 52, the second groove 53, and the first elastic portion 57a as an example. 201010249 The first groove 52 has a first starting section 52a parallel to the first side 51a, a first-end section 52b parallel to the third side 51c and opposite to the first starting section 52a, and a first starting section 52a a first connecting section 52c between the first end section 52b and the second side 51b. The length of the first end segment 52b is less than or equal to the length of the first start segment 52a. The second groove 53 has a second starting section 53a parallel to the second side 51b, a second ending section 53b parallel to the fourth side 51d and opposite to the second starting section 53a, and a second starting section A second connecting portion 53c between the 53a and the second end portion 53b and parallel to the third side 51c. The length of the second end segment 53b is less than or equal to the length of the second start segment 53a. The second starting segment 53a and the second connecting segment 53c are located on the outer side of the first trench 52 to form a substantially "L" shape with the first connecting segment 52c and the first ending segment 52b of the first trench 52. The first expansion and contraction portion 57a. The first telescopic portion 57a is transitioned from a circular arc segment to a portion between the first end segment 52b and the second connecting segment 53c by a portion between the first connecting portion 52c and the second starting portion 53a, that is, the first telescopic portion 57a. The corner has a circular arc structure. The first expansion-contraction portion 57a, the second expansion-contraction portion 57b, the third expansion-contraction portion 57c, and the fourth expansion-contraction portion 57d are flexibly deformed when an external force is applied, and when the external force is lost, the original state can be restored. The flat plate 51 further includes four connecting portions 56 between the light transmitting holes 510 and the respective grooves. For example, one of the connecting portions 56 is located between the light transmitting hole 510 and the first end portion 52b and the first connecting portion 52c. Each of the connecting portions 56 is provided with a through hole 561. The through hole 561 is for piercing the boss 412, and the elastic piece 50 is fixed to the barrel 41. 11 201010249 The shape of the first trench 52, the second trench 53, the third trench 54 and the fourth trench 55 and the number of the trenches are not limited to the shape and the number of the embodiment, and may also be For other shapes, such as a circular arc. When assembling the voice coil motor of the embodiment, the following steps are performed: first, a spring piece 50 is placed on the base 313, and the limiting hole 58 is opposed to the limiting groove 3131 of the base 313, and each positioning post 312 is One end is respectively received in the limiting hole 58 and the limiting slot 3131; the movable component 40 is placed on the elastic piece 50, and the second receiving cavity 411 of the loading cylinder 41 is communicated with the light transmitting hole 510 β of the elastic piece 50; The magnet 32 is fixed on the inner wall of the side plate 22, and the two ends thereof are placed between the two positioning posts 312; the other elastic piece 50 is placed on the loading cylinder 41, and the fixing plate 311 is placed on the elastic piece 50, The protrusion 412 of the loading cylinder 41 is disposed in the through hole 561 of the elastic piece 50, and the other end of the positioning post 312 is disposed in the limiting hole 58 of the elastic piece 50 and the positioning hole 3111 of the fixing plate 311; And the limiting hole 58, the through hole 561, and the positioning hole 3111 are glued inside; the outer casing 20 and the base 313 are matched, and the connecting portion can be glued. The voice coil motor of the embodiment has the following advantages: the fixed solid plate, the positioning post and the base are assembled to form a fixing frame, which is convenient for producing the fixing frame component and assembling the voice coil motor; the base is matched with the fixing plate and the positioning column. The function of forming the fixing frame functions to form a receiving cavity with the outer casing, thereby eliminating the need to provide two fixing plates to form a fixing frame with the positioning post, thereby simplifying the structure of the voice coil motor and saving raw materials. To further simplify the structure, the voice coil motor 100 of the present embodiment can be used to clamp the positioning magnet 32 and the elastic piece 50 without the positioning post 312, and directly adhere the fixing plate 3111 and the magnet 32 to the side plates 22 of the outer casing 20 by means of adhesive. 12 201010249 The inner wall of the magnet 32 is arranged to surround the movable member such as the yoke member of the magnet 32 and the elastic member 5 〇 is directly fixed to the opposite surfaces of the magnet 32. This slab 50 is enclosed in a cavity with traces 22. The valley chamber corresponds to a layer of insulating material disposed between the two bullets. For example, the insulating lacquer pot can be connected to the elastic piece 5 〇 and the magnet 32 after the electric arc 4... two insulating plastic components and the like to avoid the current flowing in the coil 42 through the elastic piece 50 after energization. To the magnet 32. It is proposed that the requirements of the invention patent have been met, and that the above is only the preferred embodiment of the present invention. Since the absence of the month fc*, the main stalk of the singer of the case is limited. Patent scope. Anyone who is familiar with the technology of this case, according to the invention, is equivalent to the equivalent modification or change made by God, and should be ashamed of the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS =1 is a schematic perspective view of a sound motor provided by an embodiment of the present invention. Figure 2 is an exploded view of the voice coil motor shown in Figure 1. ^3 is a schematic diagram of a fixed assembly of the voice coil motor shown in FIG. A schematic diagram of a positioning post of the solid component shown in FIG. Figure 5 is a schematic view of the voice coil motor A movable package shown in Figure 1. Figure 6 is a diagram! A schematic view of the shrapnel in the voice coil motor shown. [Main component symbol description] Voice coil motor 100 Housing 20 Fixing component 30 40 Moving component spring 13 50 201010249 Top plate 21 Side plate 22 - Housing cavity 212 * Light-in hole 211 Fixing frame 31 Magnet 32 First accommodating cavity 301 Fixing plate 311 ❿ Positioning post 312 Base 313 Magnetic cavity 314 Positioning hole 3111 Limiting groove 3131 First end 3121 Main body 3122 Second end 3123 First end face 3223 First end face 3224 Side surface 3225 Positioning groove 3226 Coil 42 Bottom surface 413 Top surface 414 Two accommodating chambers 411 14 201010249 ribs 412 plate 51 • first side 51a - second side 51b third side 51c fourth side 51d light transmission hole 510 limit hole 58 10 first groove 52 second Groove 53 Third groove 54 Fourth groove 55 First expansion and contraction portion 57a Second expansion and contraction portion 57b Third expansion and contraction portion 57c Fourth expansion and contraction portion 57d Ringing first start section 52a First end section 52b First connection section 52c Second starting section 53a Second ending section 53b Second connecting section 53c Connecting portion 56 Through hole 561 15