1276285 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種音圈馬達之平板彈片，特別是關於 一種使用於音圈馬達（VCM)中的平板彈片，具有移動距離 大，彈性較佳，可加速音圈馬達致動及復原狀態。 【先前技術】 按’音圈馬達（VCM )具有體積小、用電篁少、致動位移 精確及價格低廉等優點，適合作為電子產品中的短距致動 器’如手機震動馬達、磁頭/光學讀寫頭之上下位移致動 器、相機自動對焦致動器…等等。然而音圈馬達（VCM)的致 動/復原變化速度相較於電子產品動辄數毫秒的變化速度 而言，是較慢了點，因此在音圈馬達通當中會加入至少一 彈片來加速致動/復原的變化速度。 請參閱第一圖所示，係為使用於相機自動變焦之 傳統音圈馬達（VCM)分解示意圖，該音圈馬達包含有一上蓋 1〇〇、下底蓋105及一外框架no，外框架no内四周邊分別 設磁鐵115，一鏡頭支架12〇内設螺紋，可旋入支撐一鏡頭 125，鏡頭支架120上固定有二線圈126，該鏡頭支架丨2〇可 活動於該外框架11〇内的四磁鐵115中心，並由該二線圈126 通電產生磁場極性與該四磁鐵115相赤或相吸，帶動該鏡頭 支架120致動，而該鏡頭支架12〇係藉由上下各一平板彈片 130支撐在該四磁鐵115中心，以加速致動。 請參閱第二圖所示，係為傳統平板彈片13〇俯視示意 1276285 圖。該平板彈片130是在其平面上開設兩條溝槽132,且呈” 门”字形狀，並相對地彼此佈設在該平板彈片130上，形成 一外側固定部134及一内側活動部136，該外側固定部134 固鎖於該外框架11〇之上下端，而該内測活動部136則固鎖 於該鏡頭支架12〇 〇 明>閱第三圖所示，係為使用傳統平板彈片之音圈馬 達致動狀態剖面圖，當該線圈126通電磁場與該磁鐵115相 斥或相吸時’帶動鏡頭支架12Q受力上下致動，該平板彈片 130内側活動部136可藉該兩條溝槽132形成二組彈力彎折 』肩二又肖失時，則該彈片彎折部所f積的彈力回復 二==溝·槽i32r—可動段的，所以在旅予 使彈力1 ’且易科力偏移而產生橫向傾斜 使舞性=到_，喊速度也變慢。 用平板彈;1作人即為解決上述現有音圈馬達中所使 4=二：潛心研究並配合學理之運用，提 構，有效解決橫向傾:的二加:平板彈片之弹力平衡: 計合理之創作。 ]碭，增加回復速度，是為一設 【發明内容】 本發明之主要目 且有彈力平衡結構， 題，增加回復速度。 為達到上述目的 ，疋提供一種音圈馬達之平板彈片， 彈丨生較佳，能有效解決橫向傾斜的問 本發明音圈馬達之平板彈片包括有 1276285 一平板，該平板具有一中央孔，使得該平板彈片可以嵌設 於該音圈馬達的活動部。該平板上圍繞該中央孔的周圍設 有一第一溝槽、一第二溝槽、一第三溝槽及一第四溝槽， 該第二溝槽與該第四溝槽的兩端分別位於該苐一溝槽與該 第三溝槽的中央位置，而該第一溝槽與該第三溝槽的兩端 分別位於該第二溝槽與該第四溝槽的中央位置，亦即兩兩 交錯地配置在該平板上。其中該第一溝槽、一第二溝槽、 一第三溝槽及一第四溝槽形狀相同，且每一溝槽彎曲為偶 數段，並彼此使每一彎曲段對應地平行。藉上述結構之溝 槽形成四組三段線性之彈力彎折部，可使平板彈片達彈力 結構平衡，彈性佳，回復快速的效果。 【實施方式】 為了使貴審查委員能更進一步瞭解本發明為達成預 定目的所採取之技術、手段及功效，請參閱以下有關本發 明之詳細說明與附圖，相信本發明之目的、特徵與特點， 當可由此得一深入且具體之瞭解，然而所附圖式僅提供參 考與說明用，並非用來對本發明加以限制者。 請參閱第四圖所示，係為本發明音圈馬達之平板彈片 的俯視圖，本發明之平板彈片包括有一矩形平板10，該平 板10具有一甲央孔11，位於該平板10上且圍繞該中央孔11 的周圍設有一第一溝槽12、一第二溝槽13、一第三溝槽14 及一第四溝槽15，該第二溝槽13與該第四溝槽15的兩端分 別位於該第一溝槽12與該第三溝槽14的中央位置，而該第 1276285 一溝槽12與該第三溝槽η的兩端分別位於該第二溝槽13與 該第四溝槽15的中央位置。 較佳地，孩第一溝槽12、一第二溝槽13、一第三溝槽 14及一第四溝槽15形狀相同，且彼此係彎曲形成四根三段 線形之彈力彆折部，並使每一彎曲段對應地平行，亦即兩 兩交錯地配置在該平板上。1276285 IX. Description of the Invention: [Technical Field] The present invention relates to a flat-panel shrapnel for a voice coil motor, and more particularly to a flat shrapnel for use in a voice coil motor (VCM), which has a large moving distance and is excellent in elasticity. It can accelerate the actuation and recovery of the voice coil motor. [Prior Art] According to the 'Voice coil motor (VCM) has the advantages of small size, low power consumption, accurate actuation displacement and low price, it is suitable as a short-range actuator in electronic products such as mobile phone vibration motor, magnetic head / Optical head read and lower displacement actuators, camera autofocus actuators, etc. However, the speed of actuation/recovery of the voice coil motor (VCM) is slower than the speed of change of the electronic product for several milliseconds. Therefore, at least one shrapnel is added to the voice coil motor to accelerate the acceleration. The speed of change in motion/recovery. Referring to the first figure, it is a schematic diagram of a conventional voice coil motor (VCM) used for automatic zooming of the camera. The voice coil motor includes an upper cover 1 〇〇, a lower bottom cover 105 and an outer frame no, the outer frame no. A magnet 115 is disposed on the periphery of the inner four, and a lens holder 12 is internally provided with a thread for screwing into a lens 125. The lens holder 120 is fixed with two coils 126. The lens holder 丨2〇 can move in the outer frame 11〇. The four magnets 115 are centered, and the two coils 126 are energized to generate a magnetic field polarity that is red or attracted to the four magnets 115 to drive the lens holder 120 to be actuated, and the lens holder 12 is supported by a flat plate 130 Supported at the center of the four magnets 115 to accelerate actuation. Please refer to the second figure, which is a schematic view of the traditional flat plate 13 〇 13276285. The flat elastic piece 130 has two grooves 132 in a plane and is in the shape of a "gate", and is disposed on the flat plate 130 opposite to each other to form an outer fixing portion 134 and an inner movable portion 136. The outer fixing portion 134 is fixed to the lower end of the outer frame 11〇, and the inner measuring movable portion 136 is locked to the lens holder 12. As shown in the third figure, the traditional flat elastic piece is used. A cross-sectional view of the voice coil motor actuation state, when the coil 126 is energized and the magnetic field is repelled or attracted by the magnet 115, the lens holder 12Q is driven to be actuated up and down, and the inner movable portion 136 of the flat elastic piece 130 can take the two grooves. The groove 132 forms two sets of elastic bending. When the shoulder 2 is lost, the elastic force of the elastic portion of the elastic piece of the spring is restored to two == groove and groove i32r - the movable section, so the elastic force is 1 ' The coercive shift produces a lateral tilt that makes the dance = to _, and the shouting speed is also slower. Using a flat-bomb; 1 person is to solve the above-mentioned existing voice coil motor 4 = two: painstaking research and use of the theory, to construct, effectively solve the horizontal tilt: the two plus: flat elastic balance of the elastic sheet: reasonable Creation. ] 砀, increase the recovery speed, is one set [Summary of the Invention] The main object of the present invention is to have a spring balance structure, and to increase the recovery speed. In order to achieve the above object, a flat-panel shrapnel of a voice coil motor is provided, which is better in springback and can effectively solve the lateral tilt. The flat shrapnel of the voice coil motor of the present invention comprises a 1272625 flat plate having a central hole, so that the flat plate has a central hole. The flat piece can be embedded in the movable part of the voice coil motor. A first trench, a second trench, a third trench and a fourth trench are disposed around the central hole, and the second trench is located at two ends of the fourth trench a central location of the first trench and the third trench, and two ends of the first trench and the third trench are respectively located at a central position of the second trench and the fourth trench, that is, two The two are staggered on the plate. The first trench, the second trench, the third trench and the fourth trench are identical in shape, and each trench is bent into an even number of segments, and each curved segment is correspondingly parallel to each other. Four sets of three-stage linear elastic bending parts are formed by the groove of the above structure, so that the flat elastic piece can achieve the balance of elastic structure, good elasticity and quick recovery effect. [Embodiment] In order to enable the reviewing committee to better understand the techniques, means and functions of the present invention for achieving the intended purpose, please refer to the following detailed description of the invention and the accompanying drawings. It is to be understood that the invention is not limited by the scope of the invention. Referring to the fourth figure, which is a top view of the flat elastic piece of the voice coil motor of the present invention, the flat elastic piece of the present invention comprises a rectangular flat plate 10 having a central hole 11 on the flat plate 10 and surrounding the flat plate 10 A first trench 12, a second trench 13, a third trench 14 and a fourth trench 15 are disposed around the central opening 11, and the second trench 13 and the fourth trench 15 are respectively Located at a central position of the first trench 12 and the third trench 14, respectively, the two ends of the first trench 12 and the third trench η are respectively located at the second trench 13 and the fourth trench The central position of the slot 15. Preferably, the first trench 12, the second trench 13, the third trench 14, and the fourth trench 15 are identical in shape, and are bent to form four three-segment linear elastic folds. Each of the curved segments is correspondingly parallel, that is, two or two are alternately arranged on the flat plate.
明一併參閲第五圖，係為使用本發明平板彈片之音圈 馬達致動狀態剖面圖，該平板1〇***孔丨丨與該第一至第 四溝槽間形成一内側活動部16，可固鎖於該鏡頭支架， 而該第-至第四溝槽外形成—外側固定部17，可固鎖於該 外框架11G上，通常該平板彈片係安裝於該音圈馬達内部 固鎖於該鏡頭支架12〇的上方或下方。 當受到外力時，該平板10之内側活動部16可藉該第一 至四溝槽形成之該四根彈力料部受力>¥ “上下移動， 當，力消失時，彻該四根彈力彎折部所f積轉力回復 =原狀’並由於該四根彈力彎折科布於軸側活動部16 的四周，而能平衝活動。 本發明在平板10上可使用偶數個溝槽12、13、U、15， =使奇數個溝㈣、13、14、15交互地重疊是故在 的：側:舌動部16與外側固定部17間所形成的四根三段線 ’之彈力彎折部，而達到彈力平衡的結门 復快速的效果。 祕幸又佳，回 综上所述，本發明利用每一溝槽形狀相同彼 成二段線性彎曲段，並使每一彎曲 彼此形 之母弓岐對應地平行，使達到 1276285 彈力平衡的結構，彈性較佳，回復快速的效果。因此本發 明確能藉上述所揭露之技術，提供一種迥然不同於習知者 的設計，堪能提高整體之使用價值，又其申請前未見於刊 物或公開使用，誠已符合發明專利之要件，爰依法提出發 明專利申請。 惟，上述所揭露之圖式、說明，僅為本發明之實施例 而已，凡精于此項技藝者當可依據上述之說明作其他種種 之改良，而這些改變仍屬於本發明之發明精神及以下所界 定之專利範圍中。 1276285 【圖式簡單說明】 第一圖係為傳統音圈馬達分解示意圖； 第二圖係為傳統平板彈片的俯視圖； 第三圖係為使用傳統平板彈片之音圈馬達致動狀態 剖面圖； 第四圖係為本發明平板彈片的俯視圖；及 第五圖係為使用本發明平板彈片之音圈馬達致動狀 態剖面圖。 【主要元件符號說明】 100 上蓋 105 下底蓋 110 外框架 115 磁鐵 120 鏡頭支架 125 鏡頭 126 線圈 130 平板彈片 132 溝槽 134 外側固定部 136 内側活動部 10 平板 11 中央孔 12 第一溝槽 1276285 13 第二溝槽 14 第三溝槽 15 第四溝槽 16 内側活動部 17 外側固定部Referring to FIG. 5 as a sectional view of the actuating state of the voice coil motor using the flat plate spring of the present invention, an inner movable portion is formed between the central hole 丨丨 and the first to fourth grooves. 16 can be locked to the lens holder, and the first to fourth grooves are formed outside the outer fixing portion 17 to be fixed to the outer frame 11G. Generally, the flat elastic piece is mounted on the inner part of the voice coil motor. Locked above or below the lens holder 12〇. When the external force is applied, the inner movable portion 16 of the flat plate 10 can be biased by the four elastic portions formed by the first to fourth grooves and can be moved up and down. When the force disappears, the four elastic forces are completely removed. The bending force of the bent portion f is restored to the original state and the four elastic members are bent around the shaft side movable portion 16 to be flushed. The present invention can use an even number of grooves 12 on the flat plate 10. , 13, U, 15, = = an odd number of grooves (four), 13, 14, 15 are alternately overlapped: the side: the four three-segment line 'between force formed between the tongue portion 16 and the outer fixed portion 17' The bending portion achieves the fast effect of the elastic balance of the knot. Fortunately, the present invention utilizes the same curved shape of each groove and makes each curved one. The shape of the female arch is correspondingly parallel, so that the structure of the 1272625 elastic balance is better, the elasticity is better, and the quick effect is restored. Therefore, the present invention can provide a design that is quite different from the conventional one by the above-mentioned disclosed technology. Improve the overall use value, but not seen in the publication before the application For public use, Cheng has complied with the requirements of the invention patent, and filed an invention patent application according to law. However, the drawings and descriptions disclosed above are only examples of the present invention, and those skilled in the art may Other improvements are described, and these changes are still within the scope of the invention and the patents defined below. 1276285 [Simple description of the drawings] The first figure is a schematic diagram of the decomposition of a conventional voice coil motor; The top view of the conventional flat-panel shrapnel; the third view is a cross-sectional view of the actuating state of the voice coil motor using the conventional flat shrapnel; the fourth figure is a top view of the flat shrapnel of the present invention; and the fifth figure is the sound of the flat shrapnel of the present invention. Sectional diagram of the actuating state of the ring motor. [Description of main components] 100 Upper cover 105 Lower bottom cover 110 External frame 115 Magnet 120 Lens holder 125 Lens 126 Coil 130 Flat plate 132 Groove 134 Outer fixing part 136 Inner movable part 10 Flat plate 11 Central Hole 12 first groove 1272825 13 second groove 14 third groove 15 fourth groove 16 inner live Moving part 17 outer fixing part
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