200811845 九、發明說明： 【發明所屬之技術領域】 本發明有關一種光碟機’尤其是關於光碟機中用以吸 收機芯振動，避免設於機芯上主轴馬達產生碰撞，以防止 機芯振動之結構。 【先前技術】200811845 IX. Description of the Invention: [Technical Field] The present invention relates to an optical disk drive, which is particularly useful for absorbing vibration of a movement in an optical disk drive, and avoiding collision of a spindle motor disposed on the movement to prevent vibration of the movement. structure. [Prior Art]
一般光碟機係由精密的光學元件、傳動機構及電子零件所構 成’對於振動相當敏感，些微的移位，均會影響光碟機讀寫的效 ^及正確性。由於隨身型光碟機經常受到或大或小的搖動或碰 撞’甚至受到不慎掉落的衝擊，因此對於隔絕振動特別重要。 <如圖1所示，為一習知光碟機1，係在上殼2與底殼3之空間， 設有一上蓋4，上蓋4的中央部位，設一機芯5。機芯5上設主軸 6用以高速轉動光碟片D，由一傳動機構7驅動光學讀取頭8， 沿碟片D的徑向讀寫光碟片d上的資料，再傳輸至電路板9， 進行資料處理及訊號的伺服控制。此外，機芯5周邊分散設有複 數個阻尼器10 ,將機芯5直接支撐在底殼3上，以隔絕高速轉動 的主軸馬達6及傳動機構7所產生的振動外傳，同時也斷絕外側 所產生的碰撞傳遞至機芯5。 另外:光碟機1為了符合輕薄短小易於攜帶的流行驅勢，電 路板9在較長的主轴馬達6相對位置，挖設一圓孔π，讓主軸馬 ，6的尾端穿過電路板9 ,使光碟機12的厚度儘量縮小，以達到 薄化，目的。然而，主軸馬達6為機芯5中最重的元件，當光碟 機1受到例如掉落等較大的衝擊時，雖然周邊的阻尼器1〇可撐住 ，芯5,但難以避免主軸馬達6的尾端碰觸到底殼3，極易造成主 馬達6〒固疋i斜與主轴馬達6的轴承受損，導致光碟片η轉 不，，增加振動，主軸馬達6麵定歪斜也會影響機芯的平面 :’使，碟片D易於受損。因此，習知的光碟機在 上，仍有問題有待解決。 傅 200811845 【發明内容】 本發明之目的在提供一種光碟機機芯防振結構，利用 在主軸馬達的尾端設置一彈性體，吸收碰撞的能量，有效防止主 轴馬達振動，進而保護機芯。 為了達到前述發明的目的’本發明之光碟機機芯防振 結構包含一底殼，一上蓋覆蓋底殼上，電路板設在底殼與 上蓋間之内部空間，電路板設一孔槽，一機芯設於該電路 板上方，上蓋挖設一嵌孔供機芯嵌入，機芯位於相對孔槽 的位置設一主轴馬達，——端穿過孔槽，彈性體設於主轴馬 達與底殼之間，機芯四周設有多個阻尼器，穿過電路板相 對阻尼器位置設有多個通孔，將機芯固定在底殼。 【實施方式】 有關本發明為達成上述目的，所採用之技術手段及其 功效，茲舉較佳實施例，並配合圖式加以說明如下。 請參考圖2，為本發明光碟機20，為方便說明除去上 殼以顯示内部結構。光碟機20包含一底殼21、上蓋22、 機芯23、電路板24及彈性體25。主要在底殼21上覆蓋一 上蓋22，電路板24設在底殼21與上蓋22間的空間，面 機芯23設於上蓋22上，其後固定一彈性體25,穿過電路 板24支撐在底殼21上，以防止機芯振動。 其中，底殼21為一盆狀，具有向上的盆口 211及平面 狀的底面212,底面212上分散設有多個阻尼器213,而盆 二211的周緣，固設一上蓋22，上蓋22為平面狀，且覆 蓋住盆口 211，與底殼21形成一内部空間，上蓋22上由 中央部位延伸至一邊緣，挖設一嵌孔221 ,嵌孔221貫穿 至上蓋22與底殼21所形成的内部空間。此外，機芯23基 本上為長平板狀，中央轴線上挖設一固定槽231，固定槽 200811845 231的一端固設一主轴馬達232,另一端則由一傳動機構 233(請參圖4)帶動一光學讀取頭234，在固定槽231 —端 滑動至主轴馬達232的一端，機芯23的外形與嵌孔221的 外形相同，恰可嵌入嵌孔221中。 另外，電路板24為一平板狀，固定於底殼21與上蓋 22所形成的內部空間，電路板24設有多個電子零件241， 相對於底面212上多個阻尼器213,則留有多個通孔242， 可讓阻尼器213無阻礙的穿過，在相對於主轴馬達232的 位置另留有一孔槽243。彈性體25為一具有厚度的彈性材 料，例如橡膠等，其形狀可無阻礙的穿過孔槽243，直達 底面212。 如圖3所示，本發明光碟機20之組裝立體圖，而圖4 則為本發明光碟機20圖3組裝後A-A局部侧剖面圖，本發 明光碟機20組裝時，係將電路板24固定於底殼21的内部 空間，並讓底殼21上的阻尼器213，一一穿過電路板24 通孔242，再將彈性體25固定在主轴馬達232的尾端，使 主軸馬達232的尾端穿過電路板24孔槽243，將機芯23 固定在阻尼器213上，最後覆蓋上蓋22，使機芯23嵌入 嵌孔221中，與上蓋22齊平，且使主轴馬達232位於上蓋 # 22的中心。 當光碟機20受到一般振動或碰撞時，固定在機芯23 周邊的阻尼器213，彈性支撐機芯23在底殼21上，使機 芯23所承载的精密零件，達到防振的作用，阻絕光碟機 20内部的振動傳至使用者，同時使外側的碰撞無法傳遞至 ，芯23胃。但當光碟機20受到例如墜落等大碰撞衝擊時， 最長且最重的主轴馬達232,因具有較大的慣性又位於接 近機芯23的中間，尤其在近來為降低成本，機芯23改以 杈軟的塑膠一體成型，主軸馬達232將具有較大的振動幅 度，使主軸馬達232的尾端更易碰觸底殼21，但因主軸馬 200811845 ，2尾端設有彈性體25，將吸收主軸馬達232的衝擊 尸破to縮減機芯23的振動，並直接阻隔主軸馬達232的 尾端碰觸底殼21。 ni η，本發明之光碟機機芯防振結構，受到較大的衝擊 私民令1/]用彈性體’避免主軸馬達的尾端碰觸到底殼，防止主 定歪斜與軸承受損，維持主轴馬達順暢轉動光碟片與 / 、產生。同時亦可減少主轴馬達受衝擊所產生的固定歪 響機芯的平面度。此外，彈性體可為一般的橡膠， =僅裁W及黏貼組裝相當簡便，無尺寸限制，且成本亦相 t低廉。，者，本實施例雖將彈性體固定在主轴馬達的尾 端L作為說明，同理，將彈性體固定在底殼相對主轴馬達 尾端的位置，或一端固定於底殼，另一端固定在主轴馬達 的尾端’亦可達到本發明的目地及功效。 以上=述者，僅用以方便說明本發明之較佳實施例， 本發明之範圍不限於該等較佳實施例，凡依本發明所做的 任何變更’於不脫離本發明之精神下，皆屬本發明申請專 利之範圍。 8 200811845 【圖式簡單說明】 圖1為習知光碟機之局部侧剖面示意圖。 圖2為本發明光碟機之零件爆炸圖。 圖3為本發明光碟機之立體圖。 圖4為圖3中A-A本發明光碟機之局部侧剖面示意圖Generally, the optical disc system is composed of precise optical components, transmission mechanisms and electronic components. 'The vibration is quite sensitive, and the slight displacement will affect the efficiency and correctness of the optical disc reading and writing. Since the portable type optical disc drive is often subjected to rocking or bumping, which is large or small, even being subjected to an accidental drop, it is particularly important for the isolation vibration. < As shown in Fig. 1, a conventional optical disc drive 1 is disposed in the space of the upper casing 2 and the bottom casing 3, and is provided with an upper cover 4, a central portion of the upper cover 4, and a movement 5 is provided. The movement 5 is provided with a main shaft 6 for rotating the optical disc D at a high speed, and the optical pickup 8 is driven by a transmission mechanism 7, and the data on the optical disc d is read and written along the radial direction of the disc D, and then transmitted to the circuit board 9. Perform data processing and servo control of signals. In addition, a plurality of dampers 10 are dispersed around the movement 5, and the movement 5 is directly supported on the bottom case 3 to isolate the vibration generated by the spindle motor 6 and the transmission mechanism 7 rotating at a high speed, and also to cut off the outer side. The resulting collision is transmitted to the movement 5. In addition, in order to comply with the popular trend of light, short, and easy to carry, the circuit board 9 has a circular hole π in the relative position of the longer spindle motor 6, so that the tail end of the spindle horse 6 passes through the circuit board 9, so that The thickness of the optical disk drive 12 is minimized to achieve thinning. However, the spindle motor 6 is the heaviest component in the movement 5, and when the optical disk drive 1 is subjected to a large impact such as dropping, although the peripheral damper 1 撑 can hold the core 5, it is difficult to avoid the spindle motor 6 The end of the tail touches the bottom case 3, which easily causes the main motor 6 to be tilted and the bearing of the spindle motor 6 is damaged, resulting in the optical disk η not rotating, increasing the vibration, and the spindle motor 6 is also skewed. The plane of the core: 'Make the disc D vulnerable to damage. Therefore, there are still problems to be solved in the conventional optical disk drive. FU 200811845 SUMMARY OF THE INVENTION An object of the present invention is to provide an anti-vibration structure for a disc player movement, which uses an elastic body at the tail end of the spindle motor to absorb the energy of the collision, thereby effectively preventing the vibration of the main shaft motor and thereby protecting the movement. In order to achieve the object of the foregoing invention, the anti-vibration structure of the optical disc drive core of the present invention comprises a bottom case, an upper cover covers the bottom case, the circuit board is disposed in an inner space between the bottom case and the upper cover, and the circuit board is provided with a hole slot, The movement is arranged above the circuit board, and the upper cover is provided with a through hole for the movement to be embedded, and the movement is located at a position opposite to the slot to provide a spindle motor, the end passes through the slot, and the elastic body is disposed on the spindle motor and the bottom case. Between the movement, a plurality of dampers are arranged around the movement, and a plurality of through holes are arranged through the circuit board relative to the damper to fix the movement to the bottom case. [Embodiment] The present invention has been made in view of the above-described objects, the technical means employed, and the effects thereof, as described in the accompanying drawings. Referring to Fig. 2, the optical disk drive 20 of the present invention is shown for convenience of explanation to remove the upper case to show the internal structure. The optical disk drive 20 includes a bottom case 21, an upper cover 22, a movement 23, a circuit board 24, and an elastic body 25. The upper case 21 is mainly covered with an upper cover 22, and the circuit board 24 is disposed in a space between the bottom case 21 and the upper cover 22. The surface movement 23 is disposed on the upper cover 22, and then an elastic body 25 is fixed and supported by the circuit board 24. On the bottom case 21, to prevent the movement of the movement. The bottom case 21 has a basin shape, and has an upper basin opening 211 and a planar bottom surface 212. The bottom surface 212 is provided with a plurality of dampers 213, and the periphery of the basin 211 is fixed with an upper cover 22 and an upper cover 22. It is planar and covers the basin opening 211, forming an internal space with the bottom casing 21. The upper cover 22 extends from the central portion to an edge, and a through hole 221 is bored. The through hole 221 extends through the upper cover 22 and the bottom casing 21. The internal space formed. In addition, the movement 23 is basically a long flat plate shape, and a fixing groove 231 is dug on the central axis. One end of the fixing groove 200811845 231 is fixed with a spindle motor 232, and the other end is driven by a transmission mechanism 233 (refer to FIG. 4). An optical pickup 234 is slid at the end of the fixing groove 231 to one end of the spindle motor 232. The outer shape of the movement 23 is the same as that of the insertion hole 221, and can be inserted into the insertion hole 221. In addition, the circuit board 24 has a flat shape and is fixed to an inner space formed by the bottom case 21 and the upper cover 22. The circuit board 24 is provided with a plurality of electronic components 241, and a plurality of dampers 213 are provided on the bottom surface 212. The through holes 242 allow the damper 213 to pass unobstructed, leaving a hole 243 in the position relative to the spindle motor 232. The elastic body 25 is an elastic material having a thickness such as rubber or the like which is shaped to pass through the hole 243 unobstructed to the bottom surface 212. 3 is an assembled perspective view of the optical disc drive 20 of the present invention, and FIG. 4 is a partial side cross-sectional view of the optical disc drive 20 of FIG. 3 assembled according to the present invention. When the optical disc drive 20 of the present invention is assembled, the circuit board 24 is fixed to the circuit board 24. The inner space of the bottom case 21, and the damper 213 on the bottom case 21 is passed through the through hole 242 of the circuit board 24, and the elastic body 25 is fixed to the tail end of the spindle motor 232 so that the tail end of the spindle motor 232 Through the hole 24 of the circuit board 24, the movement 23 is fixed on the damper 213, and finally the upper cover 22 is covered, so that the movement 23 is embedded in the insertion hole 221, flush with the upper cover 22, and the spindle motor 232 is located on the upper cover #22 center of. When the optical disk drive 20 is subjected to general vibration or collision, the damper 213 fixed around the periphery of the movement 23 elastically supports the movement 23 on the bottom casing 21, so that the precision parts carried by the movement 23 can be prevented from vibrating and blocked. The vibration inside the optical disk drive 20 is transmitted to the user while the external collision cannot be transmitted to the core 23 stomach. However, when the optical disk drive 20 is subjected to a large collision impact such as a fall, the longest and heaviest spindle motor 232 is located in the middle of the movement 23 due to its large inertia, especially in recent times to reduce the cost, the movement 23 is changed. The soft plastic is integrally formed, and the spindle motor 232 will have a large vibration amplitude, so that the tail end of the spindle motor 232 is more likely to touch the bottom case 21, but due to the spindle horse 200811845, the end of the 2 end is provided with an elastic body 25, which will absorb the spindle. The impact of the motor 232 is broken to reduce the vibration of the movement 23, and directly blocks the end of the spindle motor 232 from touching the bottom case 21. Ni η, the anti-vibration structure of the optical disc drive of the present invention is subjected to a large impact on the private order 1/] with the elastomer 'avoiding the end of the spindle motor touching the bottom shell, preventing the main skew and bearing damage, maintaining The spindle motor smoothly rotates the disc and/or produces. At the same time, the flatness of the fixed slamming movement caused by the impact of the spindle motor can be reduced. In addition, the elastomer can be a general rubber, = only the W and the adhesive assembly is quite simple, no size limitation, and the cost is also relatively low. In this embodiment, although the elastic body is fixed to the tail end L of the spindle motor as an explanation, similarly, the elastic body is fixed at the position of the bottom case relative to the tail end of the spindle motor, or one end is fixed to the bottom case, and the other end is fixed to the main shaft. The tail end of the motor can also achieve the object and function of the present invention. The above is a description of the preferred embodiments of the present invention, and the scope of the present invention is not limited to the preferred embodiments, and any changes made in accordance with the present invention may be made without departing from the spirit of the present invention. All of them are within the scope of the patent application of the present invention. 8 200811845 [Simple description of the drawings] Fig. 1 is a partial side cross-sectional view of a conventional optical disk drive. Figure 2 is an exploded view of the parts of the optical disk drive of the present invention. Figure 3 is a perspective view of the optical disk drive of the present invention. 4 is a partial side cross-sectional view of the optical disc drive of the present invention taken along line A-A of FIG.
【主要元件符號說明】 20 光碟機 21 底殼 211 盆口 212 底面 213 阻尼器 22 上蓋 221 嵌孔 23 機芯 231 固定槽 232 主轴馬達 233 傳動機構 234 光學讀取頭 24 電路板 241 電子零件 242 通孔 243 孔槽 25 彈性體[Main component symbol description] 20 CD player 21 Bottom case 211 Basin 212 Bottom surface 213 Damper 22 Upper cover 221 Insert hole 23 Movement 231 Fixing groove 232 Spindle motor 233 Transmission mechanism 234 Optical pickup 24 Circuit board 241 Electronic parts 242 Hole 243 hole groove 25 elastomer