201107857 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種音圈馬達，尤其是一種適於外徑大的鏡 頭模組的音圈馬達以及包含該音圈馬達的相機模組。 【先前技術】 ο [0002] 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（如數碼相機、手機、數碼攝像機等） 中的致動器（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 )。 〇 [0003] 常見的音圈馬達主要包括一個固定架及一個可活動地裝 設於該固定架内的裝筒及至少一個彈片。該裝筒用來裝 設鏡筒或對焦鏡片組或變焦鏡片組等元件，該彈片用來 保護鏡筒或對焦鏡片組或變焦鏡片組等。固定架上設置 磁鐵，裝筒上繞設有線圈，在線圈電的情況下，線圈 與磁鐵之間產生力的作用，從而使裝筒在固定架内發生 位移以改變鏡筒或對焦鏡片組或變焦鏡片組與影像感測 器之間的距離，進而實現對焦或變焦的功能。 [0004] 近年來，手機相機模組隨著高畫素之成長，鏡頭外徑有 趨於增大之勢。採用上述結構的音圈馬達，使得相機模 組的整體尺寸較大。 【發明内容】 [0005] 有鑒於此，提供一種適於外徑大的鏡頭模組的音圈馬達 098127662 表單編號A0101 第3頁/共13頁 0982047444-0 201107857 及相機模組實為必要。 [0006] 一種音圈馬達，其包括：固定架，其具有一個容置空間 ，所述容置空間具有一中心軸；活動裝筒，其設置在所 述容置空間内並與所述容置空間具有相同的中心軸；第 一磁鐵和第二磁鐵，其沿所述中心軸方向排列且相對設 置並分別固定在所述固定架上；線圈，其繞設在所述活 動裝筒外表面且夾設在所述第一磁鐵和第二磁鐵之間。 [0007] —種相機模組，其包括鏡頭模組和音圈馬達，所述鏡頭 模組設置在音圈馬達内，所述音圈馬達包括：固定架， 其具有一個容置空間，所述容置空間具有一中心軸；活 動裝筒，其設置在所述容置空間内並與所述容置空間具 有相同的中心軸；第一磁鐵和第二磁鐵，其沿所述中心 軸方向排列且相對設置並分別固定在所述固定架上；線 圈，其繞設在所述活動裝筒外表面且夾設在所述第一磁 鐵和第二磁鐵之間。 [0008] 與先前技術相比，本發明實施例的音隱馬達中線圈夾設 在第一磁鐵和第二磁鐵之間，可以在音圈馬達體積不變 的情形有效地利用活動裝筒的空間，使得鏡頭模組的外 徑增大以適應高畫質鏡頭模組的需要；另外，也可以達 到減少音圈馬達製造工時的效果。 【實施方式】 [0009] 請參閱圖1、圖2及圖3，本發明第一實施例所提供的音圈 馬達100用來驅動鏡片或者鏡頭模組移動以實現相機模組 的對焦或變焦功能。 098127662 表單編號A0101 第4頁/共13頁 0982047444-0 201107857 [0010] [0011] [0012] ο [0013] [0014] ❹ 音圈馬達100包括殼體10、活動裝筒20、固定架30、上 磁鐵40a、下磁鐵40b、線圈50、上彈片60a和下彈片60b 〇 該殼體10用於消除外部電磁對該音圈馬達10 0的幹擾並防 止音圈馬達100的電磁影響其外部電子元件的工作。 殼體10具有一個底板11和四個垂直底板11的侧壁12，底 板11和側壁12形成一個用來容納活動裝筒20的腔室。底 板11的幾何中心設有一個第一通孔110，以用於光線入射 到鏡片或者鏡頭模組上。 活動裝筒20可以為各種形狀且具有一個中心軸，本實施 例中為方形結構，其具有一個呈圓形的容置腔210，容置 腔210用來容納鏡片或者鏡頭模組，線圈50繞設在活動裝 筒20的外表面。 固定架30具有一個底座31和設置在底座31的支架32，底 座31的幾何中心設有第二通孔310，光線通過第一通孔 110、設置在容置腔210的鏡片或鏡頭模組和第二通孔 310入射到相機模組的影像感測器（圖未示）上，支架32 垂直設置在底座31上且與底座31限定一個用來容納活動 裝筒20的容置空間，且容置空間具有與活動裝筒20相同 的中心軸，活動裝筒20容納在固定架30内，然後與固定 架30—起整體設置在殼體10的容置空間内。 上磁鐵40a和下磁鐵40b各有四個，其分別圍成一個環形 ，上磁鐵40a和下磁鐵40b沿中心轴方向排列且相對設置 並均固定在固定架30的支架32上，上磁鐵40a位於線圈 098127662 表單編號A0101 第5頁/共13頁 0982047444-0 [0015] 201107857 50的上方，下磁鐵40b位於線圈50的下方，從而使得線圈 50夾設在上磁鐵40a和下磁鐵40b之間。由於活動裂筒2〇 要上下運動且線圈50伴隨活動裝筒20—起運動，所以上 磁鐵40a和下磁鐵40b之間的距離要足以使得活動裝筒 上下運動以實現相機模組的對焦或變焦功能。 [0016] 當然’也可以將上磁鐵40a固定在支架32上，而將下磁鐵 40b固定在底座31上。 [0017] 上彈片60a和下彈片60b的結構、形狀相同，均包括中央 通孔610、圍繞中央通孔610的固定部611和可動部612， 可動部612受到外力時被撓曲變形，當外力消失後，其均 可恢復原始狀態。中央通孔610用於光線入射到鏡片或者 鏡頭模組上。固定部611固定在固定架30上，可動部612 固定在活動裝筒20上，從而使得活動裝筒2〇懸掛在固定 架3 0内。 [0018] 當然，也可以只包括一個彈片，如上彈片60a或者下彈片 60b ;上彈片60a和下彈片60b的結構和形狀也可以不相 同。 [0019] 由於上磁鐵40a、下磁鐵40b設置在線圈50的上方和下方 ’使音圈馬達1 00的空間得到有效利用，可達到縮小產品 尺寸及減少製造工時的效果。 [0020] 如圖4所示，本發明第二實施例的相機模組1包括鏡頭模 組2和音圈馬達1〇〇。鏡頭模組2設置在活動裝筒20的容置 腔210内，其在活動裝筒20的帶動下上下運動實現變焦或 對焦的功能。 098127662 表單編號A0101 第6頁/共13頁 0982047444-0 201107857 [0021]可以理解的是，本領域技術人員還可於本發明精神内做 其他變化㈣於本發_設計，只要料偏離本發明的 技術效果均可。這些依據本發明精神所做的變化，都應 包含在本發明所要求保護的範圍之内。 Ο [0022]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，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】 [〇〇23]圖1是本發明第一實施例音圏馬達的立體示意圖。 [0024] 圖2是本發明第一實施例音圈馬達的分解=圖。 [0025] 圖3是圖1中111 -111線的剖視圖。 [〇〇26]圖4是本發明第二實施例相機模組的示意圖。 【主要元件符號說明】 ,. 相機模組 1 鏡頭模組 2 音圈馬達 100 殼體 10 活動裝筒 20 固定架 30 上磁鐵 40a 下磁鐵 40b 線圈 — 50 表單編號A0101 第7頁/共13頁 0982047444-0 〇 098127662 201107857 上彈片 60a 下彈片 60b 底板 11 側壁 12 第一通孔 110 容置腔 210 底座- 31 支架 32 第二通孔 310 中央通孔 610 固定部 611 可動部 612 098127662 表單編號A0101 第8頁/共13頁 0982047444-0201107857 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a voice coil motor, and more particularly to a voice coil motor suitable for a lens module having a large outer diameter and a camera module including the voice coil motor . [Prior Art] ο [0002] The voice coil motor 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 video 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 ).常见 [0003] A common voice coil motor mainly includes a holder and a barrel movably mounted in the holder and at least one elastic piece. The cartridge is used to mount components such as a lens barrel or a focus lens group or a zoom lens group, which is used to protect the lens barrel or the focus lens group or the zoom lens group. A magnet is arranged on the fixing frame, and a coil is arranged around the charging cylinder. When the coil is electrically, a force is generated between the coil and the magnet, so that the loading cylinder is displaced in the fixing frame to change the lens barrel or the focusing lens group or The distance between the zoom lens group and the image sensor, which enables focus or zoom. [0004] In recent years, with the growth of high-definition camera modules, the outer diameter of the lens tends to increase. With the voice coil motor of the above construction, the overall size of the camera module is large. SUMMARY OF THE INVENTION [0005] In view of this, a voice coil motor 098127662 suitable for a lens module having a large outer diameter is provided. Form No. A0101 Page 3 of 13 0982047444-0 201107857 and a camera module are necessary. [0006] A voice coil motor, comprising: a fixing frame having an accommodating space, the accommodating space having a central axis; and a movable charging cylinder disposed in the accommodating space and accommodating the accommodating space The space has the same central axis; the first magnet and the second magnet are arranged along the central axis direction and are oppositely disposed and respectively fixed on the fixing frame; the coil is wound around the outer surface of the movable barrel and It is interposed between the first magnet and the second magnet. [0007] A camera module includes a lens module and a voice coil motor, the lens module being disposed in a voice coil motor, the voice coil motor comprising: a fixing frame having an accommodating space, the capacity The space has a central axis; a movable barrel is disposed in the accommodating space and has the same central axis as the accommodating space; the first magnet and the second magnet are arranged along the central axis direction and And oppositely disposed on the fixing frame; the coil is wound around the outer surface of the movable charging cylinder and sandwiched between the first magnet and the second magnet. Compared with the prior art, the coil of the voice-invisible motor of the embodiment of the present invention is sandwiched between the first magnet and the second magnet, and can effectively utilize the space of the movable cylinder when the volume of the voice coil motor is constant. The outer diameter of the lens module is increased to meet the needs of the high-quality lens module; in addition, the effect of reducing the manufacturing time of the voice coil motor can also be achieved. [0009] Referring to FIG. 1 , FIG. 2 and FIG. 3 , a voice coil motor 100 according to a first embodiment of the present invention is used to drive a lens or a lens module to achieve focus or zoom function of a camera module. . 098127662 Form No. A0101 Page 4 / Page 13 0982047444-0 201107857 [0012] [0014] [0014] The voice coil motor 100 includes a housing 10, a movable barrel 20, a holder 30, The upper magnet 40a, the lower magnet 40b, the coil 50, the upper elastic piece 60a, and the lower elastic piece 60b are used for eliminating external electromagnetic interference with the voice coil motor 100 and preventing electromagnetic influence of the voice coil motor 100 from external electronic components. work. The housing 10 has a bottom plate 11 and side walls 12 of four vertical bottom plates 11, and the bottom plate 11 and side walls 12 define a chamber for receiving the movable package 20. The geometric center of the bottom plate 11 is provided with a first through hole 110 for light to be incident on the lens or the lens module. The movable cylinder 20 can be of various shapes and has a central axis. In this embodiment, it has a square structure, and has a circular receiving cavity 210 for receiving a lens or a lens module. It is provided on the outer surface of the movable cylinder 20. The fixing frame 30 has a base 31 and a bracket 32 disposed on the base 31. The geometric center of the base 31 is provided with a second through hole 310 through which the light passes through the first through hole 110, the lens or the lens module disposed in the receiving cavity 210, and The second through hole 310 is incident on an image sensor (not shown) of the camera module. The bracket 32 is vertically disposed on the base 31 and defines a receiving space for receiving the movable loading tube 20 with the base 31. The space has the same central axis as the movable cylinder 20, and the movable cylinder 20 is housed in the fixing frame 30, and is then integrally disposed with the fixing frame 30 in the accommodating space of the casing 10. Each of the upper magnet 40a and the lower magnet 40b has four annular shapes, and the upper magnet 40a and the lower magnet 40b are arranged along the central axis direction and are oppositely disposed and fixed on the bracket 32 of the fixing frame 30. The upper magnet 40a is located. Coil 098127662 Form No. A0101 Page 5/Total 13 page 0982047444-0 [0015] Above the 201107857 50, the lower magnet 40b is located below the coil 50 such that the coil 50 is interposed between the upper magnet 40a and the lower magnet 40b. Since the movable splitting cylinder 2 is to move up and down and the coil 50 moves with the movable loading cylinder 20, the distance between the upper magnet 40a and the lower magnet 40b is sufficient for the movable loading cylinder to move up and down to achieve focusing or zooming of the camera module. Features. [0016] Of course, it is also possible to fix the upper magnet 40a to the bracket 32 and the lower magnet 40b to the base 31. [0017] The upper elastic piece 60a and the lower elastic piece 60b have the same structure and shape, and each includes a central through hole 610, a fixing portion 611 surrounding the central through hole 610, and a movable portion 612. The movable portion 612 is flexibly deformed when subjected to an external force, and when the external force disappears, , it can restore the original state. The central through hole 610 is used to inject light onto the lens or lens module. The fixing portion 611 is fixed to the holder 30, and the movable portion 612 is fixed to the movable barrel 20 so that the movable barrel 2 is hung in the holder 30. [0018] Of course, it is also possible to include only one elastic piece, such as the elastic piece 60a or the lower elastic piece 60b; the structure and shape of the upper elastic piece 60a and the lower elastic piece 60b may also be different. Since the upper magnet 40a and the lower magnet 40b are disposed above and below the coil 50, the space of the voice coil motor 100 is effectively utilized, and the effect of reducing the size of the product and reducing the number of manufacturing man-hours can be achieved. As shown in FIG. 4, the camera module 1 of the second embodiment of the present invention includes a lens module 2 and a voice coil motor 1A. The lens module 2 is disposed in the accommodating cavity 210 of the movable loading cylinder 20, and is moved up and down by the movable loading cylinder 20 to realize zooming or focusing. 098127662 Form No. A0101 Page 6 of 13 0982047444-0 201107857 [0021] It is to be understood that those skilled in the art can also make other changes within the spirit of the present invention (4) in the present invention, as long as it deviates from the present invention. Technical effects are available. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention. [0022] 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 a preferred embodiment of the present invention, and it is not possible 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 spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [FIG. 1] FIG. 1 is a perspective view of a hammer motor according to a first embodiment of the present invention. 2 is an exploded view of the voice coil motor of the first embodiment of the present invention. 3 is a cross-sectional view taken along line 111-111 of FIG. 1. 4 is a schematic view of a camera module according to a second embodiment of the present invention. [Main component symbol description] ,. Camera module 1 Lens module 2 Voice coil motor 100 Housing 10 Activity tube 20 Fixing frame 30 Upper magnet 40a Lower magnet 40b Coil - 50 Form No. A0101 Page 7 / Total 13 page 0982047444 -0 〇098127662 201107857 Upper elastic piece 60a Lower elastic piece 60b Base plate 11 Side wall 12 First through hole 110 accommodating cavity 210 Base - 31 Bracket 32 Second through hole 310 Central through hole 610 Fixing portion 611 Movable portion 612 098127662 Form No. A0101 Page 8 / Total 13 pages 0982047444-0