200952309 九、發明說明： 【發明所屬之技術領域】 本發明涉及一馬達致動器，尤其涉及一音圈馬達致動 -器。 【先前技術】 音圈馬達致動器具有體積小、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、行動電話、數位 攝像機等）中之致動器（請參見Design of a voice coil motor used in the focusing system of a digital video camera， Magnetics, IEEE Transactions on Volume 41, Issue 10, Oct. 2005 Page(s):3979 - 3981)。 習知之音圈馬達致動器於組裝中，為保證組裝精度， 多採用定位柱與對應之定位孔相配合之方式對音圈馬達致 動器内鏡頭裝筒及彈片進行預定位，預定位結束後，於容 置有該定位柱之定位孔内點膠，從而固定相應之組件。 通常，組裝好之音圈馬達致動器需要經過摔落測試， ®測試合格之音圈馬達致動器才能進入市場。於該測試過程 中，點膠部位處之膠易脫落，進而導致該音圈馬達致動器 之穩地性較差。 【發明内容】 有鑒於此，有必要提供一穩定性較佳之音圈馬達致動 器。 一音圈馬達致動器，其包括：一兩端開口之鏡頭裝筒， 兩個分別位於該鏡頭裝筒兩端之彈片，該彈片具有一平 200952309 板該平板中央设有一通孔及複數位於通孔周圍之連接 •部，該連接部上設有—開口方向朝向通孔之定位開口，該 ，項裝與該彈片相對之兩端各設有數量與該連接部之數 $ :目同之疋位柱，該定位柱具有與該定位開口相匹配之卡 合部及自該卡合部向該鏡頭裝筒外突出該卡合部側壁之止 擋=，該卡合部與該定位開口相配合將該鏡頭裝筒與該彈 片定位，該止擋部用於阻止該彈片之連接部相對該鏡頭 筒移動。 ❹★ 2對於先前技術’本發明之音圈馬達致動器之鏡頭裝 涛疋位柱具有卡合部及止擋部，而該彈片具有定位開 口該卡合部及止擋部與該定位開口相配合將該鏡頭裝筒 ，該^之連接部定位並固定。正是由於該卡合部、止播 二及疋位開口之存在，從而省去傳統之採用點膠黏合固 定，採用卡合固定方式使得該彈片之連接部緊密地位於該 止檔部及該鏡頭裝筒之與該彈片相距最近之端面之間，進 0而使得該鏡頭裝筒與該彈片之連接部之間之穩定性較佳， 具有該鏡頭裝筒及該彈片之音圈馬達致動器之穩定性較 佳。 【實施方式】 下面將結合附圖對本發明作一具體介紹。 明參閱圖1及圖2’其為本發明實施例所提供之音圈馬 ，致動器10 ’其包括一外殼2〇，一設於該外殼2〇内之兩 端具有開口之固定裝|且30，兩個分別位於該固定裝組3〇 兩端之彈片40，一位於該固定裝组3〇内之活動裝組5〇及 7 200952309 -用於裝載影像感測器（圖未示）之承载體6〇。 該外殼2〇用於消除外部電磁對該音圈馬達10之幹擾 並防止該音圈馬達1G之電磁影響其外部電子元件之工作。 該外殼20可藉由鎳鐵合金、導電塑膠、表面導電材料、導 電玻璃等磁遮罩材料製成。料殼20具有—底板22、兩個 没置於底板22相對兩側之第—側板24及兩個設置於底板 22之另外相對兩側之第二側㈣。該底、兩個第二側 ❹ 板24及兩個第二侧板26形成—用來容置固^裝組 置空間。 該固定裝組30具有一 hi中鈕^ _ 固疋架32及四塊裝設於固定架 32中之磁鐵34。該固定架32係—呈正方體筒狀之架體。 該固定架32之四個方形侧壁圍成一第一容置腔321，該第 一容置腔321用來收容活動裝組5〇。 請一併參閱圖3,該彈片40具有一方形平板乜。該平 板41具有第一侧邊411a、第二側邊4m、第三侧邊4山 及第四側邊411d。該第一侧邊411a與第三側邊4Uc平行， 第二侧邊411b與第四侧邊4Ud平行。該平板41之幾何中 心開設有一通孔410，該通孔410使得光線射入或射出鏡 頭。該平板41還開設有第一溝槽42、第二溝槽、第二 溝槽44及第四溝槽45。該第一溝槽42、第二溝槽43、第 二溝槽44及第四溝槽45分佈於讓通孔41〇之四周。 a玄苐一溝槽42具有與第一側邊411a平行之第一起妒 段421a、與第三側邊411c平行之且與第一起始部= 對之第一結束段421b及位於第一起始段421a與第一妗束 8 200952309 段421b之間之且與第二侧邊411b平行之第一連接段 421c。該第一連接段421c及第一結束段421b與通孔410 之間形成連接部46。 該第二溝槽43具有與第二側邊411b平行之第二起始 段431a、與第四侧邊411d平行之且與第二起始部431a相 對之第二結束段431b及位於第二起始段431a與第二結束 段431b之間之且與第三側邊411c平行之第二連接段 431c。該第二連接段431c及第二結束段431b與通孔410 ❹之間形成連接部46。 該第三溝槽44具有與第三側邊411c平行之第三起始 段441a、與第一侧邊411a平行之且與第三起始部441a相 對之第三結束段441b及位於第三起始段441a與第三結束 段441b之間之且與第四側邊411d平行之第三連接段 441c。該第三連接段441c及第三結束段441b與通孔410 之間形成連接部46。 該第四溝槽45具有與第四側邊411d平行之第四起始 段451a、與第二侧邊411b平行之且與第四起始部451a相 對之第四結束段451b及位於第四起始段451a與第四結束 段451b之間之且與第一側邊411a平行之第四連接段 451c。該第四連接段441c及第四結束段441b與通孔410 之間形成連接部46。 該四個連接部46上均開設有一開口朝向通孔410之定 位開口 461。該定位開口 461用於將該彈片40與該活動裝 組50定位。本實施例中，該定位開口 461之形狀為圓弧形。 9 200952309 請參閱圖4，該活動裝組50裝設於固定裝組30之第一 容置腔321中。該活動裝組50具有一鏡頭裝筒51及繞於 * 該鏡頭裝筒51外壁之線圈52。 該鏡頭裝筒51為一具有大致呈圓形之第二容置腔512 之方形結構。該第二容置腔512用來收容鏡頭（圖未示）。 該第二容置腔512之侧壁沿平行於鏡頭裝筒51之中心軸方 向延伸形成八個定位柱513。該八個定位柱513中，四個均 勻分佈於鏡頭裝筒51之頂部，四個均勻分佈於鏡頭裝筒51 ❹之底部，用來與彈片40定位。 當然，該鏡頭裝筒50 —端之定位柱513之個數亦可為 兩個、三個或複數個。 該定位柱513具有一與該彈片40之定位開口 461相匹 配之卡合部514及一自該卡合部514向鏡頭裝筒51外突出 該卡合部514之側壁之止擋部515。該卡合部514與該定位 開口 461相配合將該鏡頭裝筒51與彈片40定位。該止擋 部51用於阻擋該彈片40之連接部46相對於該鏡頭裝筒51 〇 移動。優選地，本實施例中，該卡合部514為圓柱形結構， 且該卡合部514與該止擋部515相互垂直。當然，該卡合 部514亦可與該止擋部515不垂直。 本實施例中，該卡合部514與該止擋部515 —體成型。 當然，該卡合部514與該止擋部515亦可單獨成型， 再藉由膠合黏結、螺接等其它固接方法固接為一體。 請一併參閱圖5,該定位開口 461與定位柱513之卡合 部514相卡合將彈片40與該活動裝組50之鏡頭裝筒51定 200952309 位且該彈片40之連接部46緊密地位於該止撞部515及 亥鏡，裝筒51之與該彈片4〇相距最近之端面之間。 * 當然，該卡合部514亦可為方形柱體 ，此時，該定位 開口 461相應地為方形開口，該止擋部515亦相應之為方 形結構、三角形結構、五邊形結構或六邊形結構等其他結 構。 _該承載體60呈方形，與外殼20構成一隔離盒70。該 隔離盒7G可用於消除外部電磁對該音圈馬達致動器ι〇之 幹擾並防止該音圈馬達致動器1〇之電磁影響其外部電子元 件之工作。 综上所述，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方 式m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。 ❹【圖式簡單說明】 圖1係本發明音圈馬達致動器立體示意圖。 圖2係本發明音圈馬達致動器之分解圖，其具有彈片 及活動裝組； 圖3係圖2中音圈馬達致動器之彈片之示意圖； 圖4係圖2中音圈馬達致動器之活動裝組之示意圖； 圖5係圖3中之彈片與圖4中之活動裝組相結合之示 意圖； 11 200952309 【主要元件符號說明】 音圈馬達致動器 10 外殼 20 固定裝組 30 該彈片 40 該活動裝組 50 承載體 60 底板 22 ❹第一側板 24 第二側板 26 固定架 32 磁鐵 34 第一容置腔 321 平板 41 第一侧邊 411a 第二側邊 411b ❹ 第三側邊 411c 第四側邊 411d 通孔 410 第一溝槽 42 第二溝槽 43 第三溝槽 44 第四溝槽 45 第一起始段 421a 12 200952309 第一結束段 421b 第一連接段 421c 連接部 46 第二起始段 431a 第二結束段 431b 第二連接段 431c 第三起始段 441a 第三結束段 441b ❹第三連接段 441c 第四起始段 451a 第四結束段 451b 第四連接段 451c 定位開口 461 鏡頭裝筒 51 線圈 52 第二容置腔 512 Ο V定位柱 513 卡合部 514 止擋部 515 隔離盒 70 13200952309 IX. Description of the Invention: TECHNICAL FIELD The present invention relates to a motor actuator, and more particularly to a voice coil motor actuator. [Prior Art] The voice coil motor actuator has the advantages of small size, low power consumption, and low price, and is suitable as an actuator in electronic products (such as digital cameras, mobile phones, digital cameras, etc.) (see Design of a voice coil motor used in the focusing system of a digital video camera, Magnetics, IEEE Transactions on Volume 41, Issue 10, Oct. 2005 Page(s): 3979-3981). In the assembly of the voice coil motor actuator, in order to ensure the assembly precision, the positioning cylinder and the corresponding positioning hole are used to pre-position the lens barrel and the elastic piece in the voice coil motor actuator, and the pre-positioning is finished. After that, the dispensing hole is disposed in the positioning hole of the positioning post to fix the corresponding component. Typically, an assembled voice coil motor actuator requires a drop test, and a qualified voice coil motor actuator can be placed on the market. During the test, the glue at the dispensing site easily fell off, which in turn caused the voice coil motor actuator to be less stable. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a voice coil motor actuator with better stability. A voice coil motor actuator comprising: a lens barrel opened at both ends, two elastic pieces respectively located at two ends of the lens barrel, the elastic piece having a flat 200952309 plate, a through hole in the center of the plate, and a plurality of through holes a connecting portion around the hole, wherein the connecting portion is provided with a positioning opening opening toward the through hole, and the number of the opposite ends of the item is opposite to the number of the connecting portion: a positioning post having a locking portion matching the positioning opening and a stop protruding from the engaging portion to the outside of the lens barrel; the engaging portion is matched with the positioning opening The lens barrel is positioned with the elastic piece, and the stopping portion is configured to prevent the connection portion of the elastic piece from moving relative to the lens barrel. ❹★ 2 For the prior art, the lens mount of the voice coil motor actuator of the present invention has a latching portion and a stop portion, and the elastic piece has a positioning opening, the engaging portion and the stopping portion, and the positioning opening The lens is mounted in cooperation with the lens, and the connecting portion of the lens is positioned and fixed. It is because of the existence of the engaging portion, the stop-and-slide second and the opening of the position, thereby eliminating the conventional use of the adhesive bonding and fixing, and the engaging portion of the elastic piece is closely located at the stop portion and the lens by the snap-fit fixing manner. Between the end face of the loading cylinder and the end face of the elastic piece, the stability between the lens barrel and the elastic piece is better, and the lens barrel and the voice coil motor actuator of the elastic piece are provided. The stability is better. [Embodiment] Hereinafter, the present invention will be specifically described with reference to the accompanying drawings. Referring to FIG. 1 and FIG. 2, which are the voice coil horses provided by the embodiments of the present invention, the actuator 10' includes a casing 2〇, and a fixed device disposed at both ends of the casing 2〇 with an opening| And 30, two elastic pieces 40 respectively located at the two ends of the fixed assembly 3, a movable assembly group 5〇 and 7 200952309 located in the fixed assembly 3〇 - for loading image sensors (not shown) The carrier 6〇. The housing 2 is for eliminating external electromagnetic interference with the voice coil motor 10 and preventing the electromagnetic of the voice coil motor 1G from affecting the operation of its external electronic components. The outer casing 20 can be made of a magnetic mask material such as a nickel-iron alloy, a conductive plastic, a surface conductive material, or a conductive glass. The casing 20 has a bottom plate 22, two first side plates 24 which are not disposed on opposite sides of the bottom plate 22, and two second sides (four) which are disposed on the opposite sides of the bottom plate 22. The bottom, the two second side sills 24 and the two second side panels 26 are formed to accommodate the mounting space. The fixed assembly 30 has a hi-button _ truss 32 and four magnets 34 mounted in the holder 32. The fixing frame 32 is a frame body having a rectangular parallelepiped shape. The four square side walls of the holder 32 define a first accommodating cavity 321 for receiving the movable assembly 5. Referring to FIG. 3 together, the elastic piece 40 has a square flat plate. The flat plate 41 has a first side 411a, a second side 4m, a third side 4, and a fourth side 411d. The first side 411a is parallel to the third side 4Uc, and the second side 411b is parallel to the fourth side 4Ud. A through hole 410 is defined in the geometric center of the plate 41, and the through hole 410 allows light to enter or exit the lens. The flat plate 41 is further provided with a first groove 42, a second groove, a second groove 44 and a fourth groove 45. The first trench 42, the second trench 43, the second trench 44, and the fourth trench 45 are distributed around the via hole 41. a sinuous groove 42 having a first ridge portion 421a parallel to the first side 411a, parallel to the third side 411c, and a first start portion = a first end portion 421b and a first start portion The first connecting segment 421c between the 421a and the first bundle 8 200952309 segment 421b and parallel to the second side 411b. A connecting portion 46 is formed between the first connecting portion 421c and the first ending portion 421b and the through hole 410. The second groove 43 has a second starting portion 431a parallel to the second side 411b, a second ending portion 431b parallel to the fourth side 411d and opposite to the second starting portion 431a, and located in the second A second connecting segment 431c between the initial segment 431a and the second ending segment 431b and parallel to the third side 411c. A connecting portion 46 is formed between the second connecting portion 431c and the second ending portion 431b and the through hole 410. The third groove 44 has a third starting segment 441a parallel to the third side 411c, a third ending segment 441b parallel to the first side 411a and opposite to the third starting portion 441a, and a third A third connecting segment 441c between the initial segment 441a and the third ending segment 441b and parallel to the fourth side 411d. A connection portion 46 is formed between the third connection segment 441c and the third end segment 441b and the through hole 410. The fourth groove 45 has a fourth starting portion 451a parallel to the fourth side 411d, a fourth ending portion 451b parallel to the second side 411b and opposite to the fourth starting portion 451a, and located at the fourth A fourth connecting segment 451c between the beginning segment 451a and the fourth ending segment 451b and parallel to the first side edge 411a. A connecting portion 46 is formed between the fourth connecting segment 441c and the fourth ending segment 441b and the through hole 410. Each of the four connecting portions 46 defines an opening 461 opening toward the through hole 410. The positioning opening 461 is used to position the elastic piece 40 with the movable assembly 50. In this embodiment, the positioning opening 461 has a circular arc shape. 9 200952309 Referring to FIG. 4, the movable assembly 50 is mounted in the first receiving cavity 321 of the fixed assembly 30. The movable assembly 50 has a lens barrel 51 and a coil 52 wound around the outer wall of the lens barrel 51. The lens barrel 51 is a square structure having a substantially circular second receiving cavity 512. The second accommodating cavity 512 is for receiving a lens (not shown). The sidewall of the second accommodating cavity 512 extends in a direction parallel to the central axis of the lens barrel 51 to form eight positioning posts 513. Of the eight positioning posts 513, four are evenly distributed on the top of the lens barrel 51, and four are evenly distributed on the bottom of the lens barrel 51 for positioning with the elastic piece 40. Of course, the number of the positioning posts 513 at the end of the lens barrel 50 may also be two, three or plural. The positioning post 513 has an engaging portion 514 that matches the positioning opening 461 of the elastic piece 40, and a stopping portion 515 that protrudes from the engaging portion 514 to the outside of the lens barrel 51. The engaging portion 514 cooperates with the positioning opening 461 to position the lens barrel 51 and the elastic piece 40. The stopper portion 51 is for blocking the connection portion 46 of the elastic piece 40 from moving relative to the lens barrel 51. Preferably, in the embodiment, the engaging portion 514 has a cylindrical structure, and the engaging portion 514 and the stopping portion 515 are perpendicular to each other. Of course, the engaging portion 514 can also be not perpendicular to the stopping portion 515. In this embodiment, the engaging portion 514 is integrally formed with the stopping portion 515. Of course, the engaging portion 514 and the stopping portion 515 can also be separately formed, and then fixed by integral bonding methods such as gluing, screwing, and the like. Referring to FIG. 5 , the positioning opening 461 is engaged with the engaging portion 514 of the positioning post 513 to fix the elastic piece 40 and the lens barrel 51 of the movable assembly 50 to the position 200952309, and the connecting portion 46 of the elastic piece 40 is closely It is located between the collision portion 515 and the mirror, and between the end faces of the cartridge 51 which are closest to the elastic piece 4〇. Of course, the engaging portion 514 can also be a square cylinder. In this case, the positioning opening 461 is correspondingly a square opening, and the stopping portion 515 is correspondingly a square structure, a triangular structure, a pentagonal structure or six sides. Other structures such as the shape structure. The carrier 60 has a square shape and forms a spacer 70 with the outer casing 20. The spacer 7G can be used to eliminate external electromagnetic interference with the voice coil motor actuator and prevent the electromagnetics of the voice coil motor actuator 1 from affecting the operation of its external electronic components. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the present invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a voice coil motor actuator of the present invention. Figure 2 is an exploded view of the voice coil motor actuator of the present invention, which has a shrapnel and a movable assembly; Figure 3 is a schematic view of the shrapnel of the voice coil motor actuator of Figure 2; Figure 4 is a voice coil motor of Figure 2. Schematic diagram of the movable assembly of the actuator; FIG. 5 is a schematic diagram of the combination of the elastic piece of FIG. 3 and the movable assembly of FIG. 4; 11 200952309 [Description of main component symbols] Voice coil motor actuator 10 Housing 20 fixed assembly 30 The elastic piece 40 The movable assembly 50 The carrier 60 The bottom plate 22 The first side plate 24 The second side plate 26 The fixing frame 32 The magnet 34 The first accommodating cavity 321 The flat plate 41 The first side 411a The second side 411b ❹ The third side Side 411c fourth side 411d through hole 410 first groove 42 second groove 43 third groove 44 fourth groove 45 first start segment 421a 12 200952309 first end segment 421b first connection segment 421c connection portion 46 Second starting segment 431a Second ending segment 431b Second connecting segment 431c Third starting segment 441a Third ending segment 441b ❹ Third connecting segment 441c Fourth starting segment 451a Fourth ending segment 451b Fourth connecting segment 451c Positioning Opening 461 lens barrel 51 coil 52 Second accommodating cavity 512 Ο V positioning post 513 Engagement part 514 Stop part 515 Isolation box 70 13