1342012. 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判 別光碟片的尺寸’並引導不同尺寸的光碟片到達定位，以 便箝住機構嵌入光碟片中心孔之定位裳置。 【先前技術】1342012. Nine, the invention relates to: [Technical field of the invention] The present invention relates to an optical disc drive 'especially for discriminating the size of an optical disc in an optical disc drive' and guiding the optical discs of different sizes to arrive at a position for clamping the mechanism to be embedded. The positioning of the center hole of the disc is placed. [Prior Art]
由於光碟片一般分為8cm及12cm兩種尺寸，習知光碑 機需設置多個導桿之進退片機構，分別引導大小不同尺^ 的光碟片至定位，才能正確箝住光碟片的中心孔， 碟片’以進行讀寫光碟片上的資料。 $ 如圓i所不，為一習知的光碟機1〇，係利用一组 齒輪11，轉動一橫置於近光碟機1〇前端入口 12的 13，將插入入口 12的大小尺寸光碟片c、D，輸送推入 碟機10中，光碟機10入口 12兩旁分設一限制導桿14、 15^制光碟片c、D由人口 12的5中央插人，以防止小 ^寸光碟# G由_進>|，避免關其他導桿而誤 ^ f 導致損傷光碟片。當大尺寸光碟片D進片時: ΐ制導;τΐι’ D的兩邊榜開限制導桿14、15，讓 :4 15帶動設於光碟機10兩側的判片導桿16、 L道設於光碟機1〇後端兩侧的從動導桿18、19，使 =二後退以引導大尺寸光碟片D至籍住定位。Ϊ ,θ u ' 進片時，由於直徑過小，無法推開限制導 才干14、15,不能帶動判片導桿16 19位维持在原來的位置，以引導小尺寸光二 疋位，完成判片定位。 Λ知的光碟機1G利用多重的連桿，完成大小尺 間，辦大及進退片’需要較大的桿件的堆疊高 θ光碟機的岗度，讓光碟機無法薄化。此外，進退 1342012- 片機構多重導桿的設置，不僅連動複雜，且會 人八 差，導致導桿無法精確的導引光碟片至定位，影塑產^ 同時需要較多數目的桿件，增加產 。因此，習知的光碟機在判片定位的機構上’ 仍有問題亟待解決。 【發明内容】 本發明之目的在提供一種光碟機定位裝置， 附設—判片桿，導収位，減少桿件堆#，以薄化 无碍機。 本發明另一目的在提供一種光碟機定位裝置， 位槽限制兩判片桿的作動，判別不同的光碟片尺寸以 化結構、降低零件及製造組裝的成本β β 本發明再一目的在提供一種光碟機定位裝置以 位桿的連動，引導不同尺寸的光碟片自動對正至定位，掸 加定位的可靠性〇 β 本發明又一目的在提供一種光碟機定位裝置，由定位 桿前端延伸的判片桿，導正側向進片的光碟片，防: 誤觸，以避免損傷光碟片。 ，了，到前述發明的目的，本發明之光碟機定位裝 1，於一基板的兩側設有兩導引槽孔，兩導引 ^位槽，兩定位桿樞接於基板兩側，每一定位桿一端設一 樞接點，兩樞接點為對稱設置且分別順著其一導引槽孔 2，兩定位桿的另一端，一設有一連動梢，另一設‘連動 、連動梢嵌入形成連動端，基板並設有—連動槽孔’ 2導連動端移動，兩判片桿分別樞接於兩定位桿的樞接 位禅且i凸設—鎖定柱，可轉人或轉出其—導引槽孔的限 ，二基板設有兩擋塊，分位於兩定位桿轉動路徑的终點， 搐住定位桿後移，以設光碟片的定位位置。 1342012 基板的兩導引槽孔引導兩定位桿轉動，使兩定位桿的 框接點形成張開或收合，兩導引槽孔並在兩定位桿樞接點 收合位置，靠外側緣分別凹設一限位槽，使鎖定枉轉出限 位，時，受導引槽孔側緣限制，與定位桿維持一角度連結。 兩定位桿於樞接點的側邊各挖設一卡槽，兩判片桿則各於 樞接點附近凸設鎖定柱。該卡槽限制鎖定柱轉動角度，使 判片桿與定位桿形成引導光碟片的斜向連結。光碟機包含 一主軸馬達’兩定位桿之樞接點以主轴馬達的中心線對稱 設，，兩判片桿前端各凸設一接片柱，且較樞接點伸向前。 兩定位桿之一定位桿，另樞接一啟動單元，啟動單元以一 啟動桿樞接定位桿，啟動單元位於基板下面，啟動桿一端 連，觸動塊，觸動塊設有一滑槽，供啟動桿一端所設的滑 柱，入滑動形成連動，基板設有一轉動槽孔供啟動單元樞 接定位桿’且沿著轉動槽孔移動。使本發明由兩定位桿前 端附設的判片桿，配合限位槽限制兩判片桿的作動，及兩 定位桿的連動連結，以解鎖判片桿，判別不同的光碟片尺 寸，並以對稱連動的兩定位桿，引導不同尺寸的光碟片自 動對正定位。 【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 ’為設有本發明定位裝置的光碟機2〇，包 含機殼21、機芯22、夾箝機構23、傳動裝置24、滾輪模 組25及定位裝置26。主要由滾輪模組25感測一光碟片d 插入機殼21，啟動傳動裝置24，轉動滾輪模組25推入光 碟片，由定位裝置26依不同尺寸的光碟片，弓丨導定位，再 由夾箝機構23將光碟片夾箝在機芯22，以進行讀寫。 其中’機殼21具有一中空内部，前端設有一槽狀的入 1342012. 口 211，可供不同尺寸的光碟片插入或退出。機芯22設於 機殼21中空内部，機芯22上設有可移動的讀取頭221及 主軸馬達222, 一端框接於機殼21的一側，設主轴馬達222 的另一端則由光碟機20驅動上升或下降。滾輪模組25橫 設於機殼21的近前端設，内含偵測光碟片的感測器（圖未 示）及推送光碟片進出機殼21的滾輪251 (請參圖3)，傳動 裝置24則設於機殼21的一側，為一動力源，用以驅動滚 輪 251。 定位裝置26包含基板261、右定位桿262、左定位桿 263、右判片桿264、左判片桿265及啟動單元266。其中， 基板261為一梯形平板狀，一端固定在光碟機20的後端， 另一端平伸於機芯22的上方，其上挖設有複數個弧型槽 孔，包括設於右側的右導引槽孔2611與轉動槽孔2612， 設於左側的左導引槽孔2613，以及設於中間的連動槽孔 2614 ’基板261的近後端分開設有右擋塊2615及左擋塊 2616。其中右導引槽孔2611及左導引槽孔2613，在靠前 端的外側，分凹設一右限位槽2617及左限位槽2618(請參 圖7)。此外，基板261的前端固定夾箝機構23的一端， 夾箝機構23設有一夾箝蓋231的另一端，則平伸於機芯 22主轴馬達222的上方，並正對著主轴馬達222，以便於 機芯22上升時，將光碟片的中心孔夾於夾箝蓋231與主轴 馬達222之間’使主轴馬達222能穩固轉動光碟片。 右定位桿262為一彎曲條板，近中央以右支點2621可 轉動地樞接於基板261中間靠右側上面，一端設有一連動 梢2622作為連動端，連動梢2622嵌入基板261的連動槽 孔2614，右定位桿262的另一端的前側，透過右導引槽孔 2611 ’以右前樞接點2623框接右判片桿264，使右判片桿 264位於基板261下面，右定位桿262的另一端的後側， 則以右後樞接點2624透過轉動槽孔2612樞接啟動單元 8 1342012. =6 ’使啟動單元266位於基板261下面。右定位桿262的 刖，端=右前樞接點2623側邊另挖設一右卡槽2625。當 右^位桿262以右支點2621為中心轉動時，使連動梢2622 順著連動槽孔2614移動，右前樞接點2623順著右導引槽 孔2611移動’而右後樞接點2624則順著轉動槽孔2612移 動。並令右擋塊2615位於右定位桿262轉動路徑的終點 上，以擋住右定位桿262後移。 左定位桿263亦為一彎曲條板，近中央以左支點2631 可轉動地樞接於基板261中間靠左側上面，以夹箝機構23 # 為中心，與右定位桿262形成左右對稱，一端設有一連動 1 2632 ,連動槽2632可供連動梢2622嵌入移動，左定位 ，263的另一端，透過左導引槽孔2613，以左樞接點2633 柩，左判片桿265，使左判片桿265位於基板261下面。 左定位桿263的前側端於左樞接點2633側邊另挖設一左卡 槽2634。當左定位桿263以左支點2631為中心轉動時， 使連動梢2622嵌入連動槽2632，並順著連動槽孔2614移 動，而使左定位桿263與右定位捍262形成連動，且左樞 接點2633順著左導引槽孔2613移動，讓左枢接點2633與 右則框接點2623 ,以夾箝機構23為中心，同時形成張開 • 或收合。並令左擋塊2616位於左定位桿263轉動路徑的終 點上’以擋住左定位桿263後移。 、 如圖3所示，為本發明光碟機2〇之上視圖，其中右判 片桿264以右前樞接點2623樞接於右定位桿262的下方， 而左判片桿265以左樞接點2633樞接於左定位桿263的下 方’左判片和· 265則端凸設一接片柱2651，較左樞接點2633 伸向前，用以接觸光碟片D的周緣，左判片桿265於左樞 ’ 接點2633附近凸設一鎖定柱2652，鎖定柱2652恰可隨左 判片桿265轉動，轉入或轉出左限位槽2618。右判片桿264 與左判片桿265之結構相似，亦具有接片柱2641與鎖定柱 9 1342012. 2642，僅係方向不同。 此外，啟動單元266包含啟動桿2661與觸動塊2662， 啟動桿2661為一條板，近中央以右後樞接點2624可轉動 地樞接於右定位桿262的下方，一端斜向前伸向靠近光碟 機20的中心線，形成接片端2665，另一端凸設一滑柱 2663。觸動塊2662為一前後移動的滑塊，其上設有一滑槽 2664 ’供滑柱2663嵌入滑動，使啟動桿2661以右後樞接 點2624為中心轉動時，可移動觸動塊2662，以確認光碟 片到達定位。 • 當大尺寸光碟片D由中央插入光碟機20時，橫設於機 殼21前端的滾輪模組，一偵測到光碟片d及轉動滾輪251， 推送光碟片D進入光碟機20。光碟片D較大弧度的周緣， 首先會接觸到平伸於夾箝機構23兩側的右判片桿264及左 判片桿265，右判片桿264及左判片桿265分別以接片柱 2641與接片柱2651接觸光碟片D的周緣。由於右判片桿 264及左判片桿265對稱動作，以圖4至圖6所示左判片 桿265局部放大動作為例，如圖4所示，後推的光碟片D 周緣剛接觸接片枉2651時’左判片桿265的鎖定柱2652 位於左限位槽2618中，鎖住左定位桿263無法順著左導引 _ 槽孔沈13張開。如圖5所示，當光碟片D藉著滾輪推送的 力量，繼續後推左判片桿265，在左定位椁263未被觸及 且不動的狀況下，左判片桿265以左枢接點2633為中心轉 動，使鎖定枉2652隨著轉出左限位槽2618。如圖6所示’ 緊接著光碟片D的周緣觸及左樞接點2633，光碟片D藉著 滾輪推送的力量，迫使左定位桿263以左支點2631(請參 .· 圖3)為中心轉動，使左樞接點2633順著左導引槽孔2613 移動，讓轉出左限位槽2618的鎖定柱2652沿著左導引槽 孔2613侧緣滑動，並受左導引槽孔2613側緣的限制，令 左判片桿265與左定位桿263維持一連結角度。 1342012. 富光碟片D繼續藉著滾輪推送的力量，如圖7所示， 為本發明定位裝置引導光碟機D到達定位的位置，在 片桿264及左判片桿265之鎖定柱2642、2652同時解n 時，右前樞接點2623與左樞接點2633受推，使右定位= 262與左定位桿263分別以右支點2621與左支點2631 ^ 中心轉動，右前樞接點2623與左樞接點2633將分別順^ 右導引槽孔2611與左導引槽孔2613移動，且由於連動梢 2622嵌入連動槽2632，並順著連動槽孔2614移動，而使 左疋位桿263與右定位桿262形成連動，讓左拖接點2633 鲁 與右則框接點2623，以夹箱機構23為中心，同時形成張 開或收合’在右前樞接點2623與左樞接點2633兩點接觸 光碟片D弧緣下，讓光碟片D的令心孔自動對正夾箝機構 23的定位位置，向後推送，直到左定位桿263與右定位桿 262分別為左擋塊2616及右標塊2615阻擋為止》同時， 當光碟片D後推時，由於啟動桿2661以右後樞接點2624 樞接於右定位桿262轉動，接片端2665隨右定位桿262後 移’使右後樞接點2624順著轉動槽孔2612移動，讓啟動 桿2661另一端的滑柱2663，僅能在觸動塊2662的滑槽 2664内水平移動，而無法移動觸動塊2662，直到光碟片D • 定位同時，才能推壓啟動桿2661轉動，移動觸動塊2662 發出光碟片D已定位訊號，以完成光碟片定位，啟動光碟 機進行下降滾輪及機芯上升等後續的作動。 如圖8所示，為本發明定位裝置使小尺寸光碟片c定 位的作動’當小尺寸光碟片由正中心插入光碟機2〇時，橫 設於機殼21前端的滾輪模組，一偵測到光碟片c及轉動滾 輪251 ’推送光碟片C進入光碟機20。由小尺寸光碟片c : 由光碟機20中央插入，較小直徑光碟片c的周緣，並不會 觸及及轉動右判片桿264及左判片桿265，不能讓鎖定柱 2642、2652轉出左限位槽2618及右限位槽2617，而無法 1342012 解鎖’使左疋位桿263與右定位桿262固定在收合的位置， =合的位置’恰可利用以夾箝機構23為中心對稱的右前 樞，點2623與左樞接點2633,兩點接觸光碟片 C的弧緣， ^碟片C到達定位的位置，同時，光碟片c的弧緣也會 ，動接片端2665，由於右定位桿262不動，啟動桿2661 就可以右後樞接點2624為中心轉動，移動觸動塊2662發 出光碟片C已定位訊號，以完成小尺寸光碟片c的定位。 如圖9所示，為本發明定位裝置引導侧邊插入光碟機 之小尺寸光碟片定位的作動。當小尺寸光碟片c由入口 211 • 側邊插入光碟機2〇時，滾輪251係以插入位置直線推送小 尺寸光碟片C進入光碟機20，以左側插入為例，光碟片匸 首先接觸到平伸於夾箝機構23左側的左判片桿265，左判 片*孝干265以左插接點2633為中心轉動，使鎖定柱2652隨 著轉出左限位槽2618，緊接著光碟片C的周緣觸及左樞接 點2633。然而，因光碟片C並未觸及及轉動右判片桿264, 不能讓鎖定柱2642轉出右限位槽2617，而無法解鎖，使 右疋位桿262仍固定在收合的位置，右定位桿262經由後 端連動梢2622嵌入連動槽2632與連動槽孔2614，阻止左 定位桿263移動，即使光碟片c藉著滾輪推送的力量，亦 • 無法迫使左定位桿263以左支點2631為中心產生轉動，再 加以鎖定柱2642轉出右限位槽2617後，再轉動將進入左 卡槽2634限制，無法再轉動而與左定位桿263維持一斜向 連結角度，以引導光碟片C往光碟機20的中心線偏移，以 與右前枢接點2623接觸，然小尺寸光碟片c較小的直徑， 並無法同時解鎖鎖定柱2642及鎖定柱2652，僅能達至^虛 線位置所示，如前述圖8所示的定位。當光碟片c偏右側 插入時，導正的作動亦相似前述的作動。當大尺寸光碟片 側邊插入光碟機時，同樣無法解開另一側的判片桿，而被 引導在光碟機的中心線偏移，但較大直徑的大尺寸光碟 片，可在解鎖一側銷定如 , 邊鎖定柱，達到同時解 j中心線偏移後，再解鎖另一 時連動移動’以完成如’而令兩定位桿同 由前述的作動，士：n的疋位作動。 兩定位桿前端附設的之2機定位裝置’即可藉由 判別不同的光碟;==法=同，鎖判片桿， 位桿後移，以!在可解鎖時，讓兩定 桿’亦可引導不同尺寸的光碟片自 ΐ炎ΐ德的可靠性。此外，由定位桿前伸的判片桿， 興又定位桿卡阻形成斜向連結，亦可導正側向進片的光碟 片，防止發生誤觸其他機構，避免損傷光碟片。因此本 發明之光碟機定位裝置即可利用簡單的結構，同時完成光 碟片的導引、判片及定位作動，不僅減少桿件堆疊，薄化 光碟機，且可簡化結構、降低零件及製造組裝的成本。 以上所述者，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。 13 1342012- 【圖式簡單說明】 圖1為習知光碟機之立體圖。 圖2為本發明光碟機之立體圖。 圖3為本發明光碟機之上視圖。 圖4為本發明定位裝置之局部放大圖。 圖5為本發明定位裝置解鎖之局部放大圖。 圖6為本發明定位裝置解鎖後之局部放大圖。 圖7為本發明光碟機大尺寸光碟片定位之上視圖。 圖8為本發明光碟機小尺寸光碟片定位之上視圖。 圖9為本發明定位裝置引導側邊插入光碟片定位之示 圖。 、 【主要元件符號說明】 20 光碟機 21 機殼 211 入口 221 讀取頭 222 主轴馬達 22 機芯 23 夾箝機構 231 夾箝蓋 24 傳動裝置 25 滾輪模組 251 滾輪 26 定位裝置 261 基板 2611 右導引槽孔 2612 轉動槽孔 2613 左導引槽孔 2614 連動槽孔 1342012 2615 右擋塊 2616 左擋塊 2617 右限位槽 2618 左限位槽 262 右定位桿 2621 右支點 2622 連動梢 2623 右前樞接點 2624 右後樞接點 2625 右卡槽 263 左定位桿 2631 左支點 2632 連動槽 2633 左枢接點 2634 左卡槽 264 右判片桿 2641 接片柱 2642 鎖定柱 265 左判片桿 2651 接片柱 2652 鎖定柱 266 啟動單元 2661 啟動桿 2662 觸動塊 2663 滑柱 2664 滑槽 2665 接片端 C 小尺寸光碟片 D 大尺寸光碟片Since the optical disc is generally divided into two sizes of 8cm and 12cm, the conventional optical monument machine needs to set up a plurality of guide rods to advance and retract the mechanism, and respectively guide the optical discs of different sizes and sizes to position, so as to correctly clamp the center hole of the optical disc, the disc The piece 'is used to read and write data on the disc. $, as in the case of a conventional optical disc drive, a set of gears 11 is used to rotate a horizontally-sized optical disc c that is inserted into the front end 12 of the near-disc machine. , D, transport into the disc player 10, the disc drive 10 inlet 12 is divided into a limit guide 14, 15 ^ disc c, D from the population of 5 5 central insertion, to prevent small ^ disc # G By _in >|, avoiding the other guides and causing damage to the optical disc. When the large-size optical disc D enters the film: ΐ guidance; τΐι' D on both sides of the limit control guides 14, 15, let: 4 15 drive the chip guides 16 and L on both sides of the optical disc drive 10 The driven guides 18, 19 on both sides of the rear end of the optical disk drive 1 cause the second to retreat to guide the large-sized optical disk D to the home position. Ϊ , θ u ' When entering the film, because the diameter is too small, the limit guides 14 and 15 cannot be pushed open, and the position of the guide bar 16 can not be maintained at the original position to guide the small-sized light bins to complete the segmentation. . The disc drive 1G uses multiple linkages to complete the size and size, and to enlarge and advance and retract the sheet. The stacking of high-profile discs that require larger rods makes the disc drive thinner. In addition, the advance and retreat 1342012- the multi-guide rod setting of the film mechanism is not only complicated, but also inconspicuous, resulting in the guide bar not being able to accurately guide the optical disc to the positioning, and the shadow plastic production ^ also requires a larger number of rods, increasing production . Therefore, the conventional optical disk drive has a problem to be solved in the mechanism for positioning the film. SUMMARY OF THE INVENTION The object of the present invention is to provide a disc player positioning device, which is provided with a discriminating rod, a guiding position, and a rod stack #, to reduce the size of the machine. Another object of the present invention is to provide a disc player positioning device, wherein the position slot restricts the actuation of the two discs, discriminates the size of the different discs to reduce the size, and reduces the cost of the parts and the manufacturing assembly. The optical disc positioning device guides the optical discs of different sizes to be automatically aligned to the positioning by the linkage of the position bars, and the reliability of the positioning is 〇β. Another object of the present invention is to provide an optical disc positioning device which is extended by the front end of the positioning rod. The film rod guides the film on the side of the film to prevent accidental contact to avoid damage to the disc. For the purpose of the foregoing invention, the optical disk drive positioning device 1 of the present invention has two guiding slot holes on two sides of a substrate, and two guiding slots, and the two positioning rods are pivotally connected to the two sides of the substrate. A pivoting point is arranged at one end of a positioning rod, and the two pivoting points are symmetrically disposed and respectively follow a guiding slot 2, and the other ends of the two positioning rods are provided with a linkage tip and the other is provided with a linkage and a linkage Embedding to form a linking end, the substrate is provided with a linkage slot hole 2, and the two guiding rods are respectively pivotally connected to the pivoting positions of the two positioning rods, and the i-shaped locking column can be turned or turned out. The two slots are provided at the end of the rotation path of the two positioning rods, and the positioning rod is moved backward to set the positioning position of the optical disc. 1342012 The two guiding slots of the substrate guide the two positioning rods to rotate, so that the frame joints of the two positioning rods are opened or folded, and the two guiding slots are respectively folded at the pivoting points of the two positioning rods, respectively, by the outer edges A limiting slot is recessed to limit the locking jaw to the limit position, and is restricted by the side edge of the guiding slot to maintain an angle connection with the positioning rod. The two positioning rods are respectively arranged with a card slot on the side of the pivoting point, and the two determining rods respectively protrude the locking column near the pivoting point. The card slot limits the rotation angle of the locking post so that the strip and the positioning rod form an oblique connection of the guiding optical disc. The optical disc drive includes a spindle motor. The pivoting points of the two positioning rods are symmetrically arranged on the center line of the spindle motor. A front end of each of the two determining rods protrudes from the front end of the strip, and the pivot point extends forward. One positioning rod of one of the two positioning rods is pivotally connected to a starting unit, and the starting unit is pivotally connected to the positioning rod by a starting rod, the starting unit is located under the substrate, the starting rod is connected at one end, the moving block is connected, and the sliding block is provided with a sliding slot for the starting rod The sliding column provided at one end is inserted into the sliding joint to form a linkage, and the substrate is provided with a rotating slot for the starting unit to pivotally connect the positioning rod 'and move along the rotating slot. The invention adopts a filming rod attached to the front end of the two positioning rods, and the limiting groove restricts the action of the two determining rods, and the interlocking connection of the two positioning rods, so as to unlock the determining rod and discriminate the size of the different optical discs, and to symmetry Two linked positioning rods guide the optical discs of different sizes to be automatically aligned. [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 2 is provided with the positioning device of the present invention, and includes a casing 21, a movement 22, a clamping mechanism 23, a transmission device 24, a roller module 25 and a positioning device 26. Mainly by the roller module 25, an optical disc d is inserted into the casing 21, the transmission device 24 is activated, and the rotating roller module 25 is pushed into the optical disc. The positioning device 26 is positioned according to different sizes of optical discs. The clamp mechanism 23 clamps the optical disk to the movement 22 for reading and writing. The casing 21 has a hollow interior, and the front end is provided with a groove-shaped inlet 1342012. The opening 211 can be inserted or withdrawn from different sizes of the optical disc. The movement 22 is disposed in the hollow interior of the casing 21. The movement 22 is provided with a movable reading head 221 and a spindle motor 222. One end is framed on one side of the casing 21, and the other end of the spindle motor 222 is provided on the optical disc. The machine 20 drives up or down. The roller module 25 is disposed transversely to the front end of the casing 21, and includes a sensor for detecting the optical disc (not shown) and a roller 251 for pushing the optical disc into and out of the casing 21 (refer to FIG. 3), the transmission device 24 is disposed on one side of the casing 21 and is a power source for driving the roller 251. The positioning device 26 includes a substrate 261, a right positioning lever 262, a left positioning lever 263, a right determination lever 264, a left determination lever 265, and a starting unit 266. The substrate 261 has a trapezoidal flat shape, one end is fixed to the rear end of the optical disc drive 20, and the other end is extended above the movement 22, and a plurality of arc-shaped slots are dug, including a right guide disposed on the right side. The slot hole 2611 and the rotation slot 2612, the left guide slot 2613 provided on the left side, and the interlocking slot 2614' disposed in the middle are provided with a right stopper 2615 and a left stopper 2616 at the proximal end of the substrate 261. The right guiding slot 2611 and the left guiding slot 2613 are respectively provided with a right limiting slot 2617 and a left limiting slot 2618 on the outer side of the front end (refer to FIG. 7). In addition, the front end of the substrate 261 is fixed to one end of the clamp mechanism 23, and the clamp mechanism 23 is provided with the other end of the clamp cover 231, which extends above the spindle motor 222 of the movement 22 and faces the spindle motor 222 so as to When the movement 22 is raised, the center hole of the optical disc is clamped between the clamp cover 231 and the spindle motor 222 to enable the spindle motor 222 to stably rotate the optical disc. The right positioning rod 262 is a curved strip plate, and the right central pivot point 2621 is rotatably pivotally connected to the upper side of the substrate 261 on the right side. One end is provided with an interlocking tip 2622 as a linking end, and the linking tip 2622 is embedded in the linking slot 2614 of the substrate 261. The front side of the other end of the right positioning rod 262 is connected to the right trial lever 264 through the right front guide slot 2611', so that the right trial lever 264 is located below the substrate 261, and the right positioning lever 262 is another. The rear side of one end is pivoted to the starting unit 8 1342012. =6 ' by the right rear pivot point 2624 through the rotating slot 2612 so that the starting unit 266 is located below the substrate 261. A right card slot 2625 is further disposed on the side of the right positioning rod 262 and the side of the right front pivot joint 2623. When the right position lever 262 is rotated about the right pivot point 2621, the linkage tip 2622 is moved along the linkage slot 2614, the right front pivot joint 2623 moves along the right guide slot 2611, and the right rear pivot point 2624. Move along the rotating slot 2612. And the right stopper 2615 is located at the end of the rotation path of the right positioning rod 262 to block the right positioning rod 262 from moving backward. The left positioning rod 263 is also a curved strip, and is pivotally connected to the upper left side of the substrate 261 in the near center by the left pivot point 2631. The center of the clamping mechanism 23 is centered on the left positioning rod 262. There is a linkage 1 2632, the linkage groove 2632 can be inserted into the linkage tip 2622, the left position, the other end of the 263 passes through the left guide slot 2613, the left pivot joint 2633 柩, the left ruler rod 265, the left slice The rod 265 is located below the substrate 261. The left side of the left positioning rod 263 is further provided with a left card slot 2634 at the side of the left pivot point 2633. When the left positioning rod 263 rotates around the left fulcrum 2631, the interlocking tip 2622 is inserted into the linking groove 2632 and moves along the linking slot 2614, so that the left positioning rod 263 and the right positioning 捍 262 are interlocked, and the left pivoting The point 2633 moves along the left guiding slot 2613, and the left pivoting joint 2633 and the right rear frame joint 2623 are centered on the clamping mechanism 23, and simultaneously form an opening/closing. And the left stopper 2616 is located at the end point of the rotation path of the left positioning rod 263 to block the left positioning rod 263 from moving backward. As shown in FIG. 3, it is a top view of the optical disc drive 2 of the present invention, wherein the right trial lever 264 is pivoted to the lower side of the right positioning lever 262 with the right front pivot joint 2623, and the left trial lever 265 is pivoted to the left. The point 2633 is pivotally connected to the lower left positioning rod 263. The left piece and the 265 end are provided with a tab column 2651 extending forward from the left pivot point 2633 for contacting the periphery of the optical disc D. The lever 265 protrudes from the left pivot 'contact 2633 with a locking post 2652. The locking post 2652 can just rotate with the left trial lever 265 and rotates into or out of the left limiting slot 2618. The right trial lever 264 is similar in structure to the left trial lever 265, and has a tab post 2641 and a locking post 9 1342012. 2642, which are only in different directions. In addition, the starting unit 266 includes a starting lever 2661 and a triggering block 2662. The starting lever 2661 is a plate, and the center is rotatably pivoted to the lower side of the right positioning rod 262 at a right rear pivotal joint 2624, and one end extends obliquely forward. The center line of the optical disk drive 20 forms a tab end 2665, and the other end is provided with a sliding post 2663. The actuating block 2662 is a slider that moves forward and backward, and is provided with a sliding slot 2664' for sliding the sliding column 2663 to slide, so that when the starting lever 2661 rotates around the right rear pivoting point 2624, the movable block 2262 can be moved to confirm The disc is positioned. • When the large-size optical disc D is inserted into the optical disc drive 20 from the center, the roller module traversed at the front end of the casing 21 detects the optical disc d and the rotating roller 251, and pushes the optical disc D into the optical disc drive 20. The periphery of the disc D having a large curvature first contacts the right trial lever 264 and the left trial lever 265 which are extended on both sides of the clamp mechanism 23, and the right trial lever 264 and the left trial lever 265 are respectively connected. The post 2641 and the tab 2651 contact the periphery of the optical disc D. Since the right trial lever 264 and the left trial lever 265 are symmetrically operated, the partial zooming action of the left trial lever 265 shown in FIG. 4 to FIG. 6 is taken as an example. As shown in FIG. 4, the rearwardly pushed optical disc D is just in contact with the periphery. At the time of the sheet 2651, the locking post 2652 of the left trial lever 265 is located in the left limiting slot 2618, and the locking left positioning lever 263 cannot be opened along the left guiding slot. As shown in FIG. 5, when the optical disc D is pushed by the force of the scroll wheel, the left trial lever 265 is pushed forward, and in the left position 椁 263 is not touched and does not move, the left trial lever 265 is pivoted to the left. The 2633 is centered for rotation so that the locking jaw 2652 is rotated out of the left limiting slot 2618. As shown in FIG. 6 ' Immediately after the periphery of the optical disc D touches the left pivotal joint 2633, the force of the optical disc D being pushed by the roller forces the left positioning lever 263 to rotate around the left pivot point 2631 (see Fig. 3). The left pivot joint 2633 is moved along the left guide slot 2613, so that the lock post 2652 that is turned out of the left limit slot 2618 slides along the side edge of the left guide slot 2613 and is supported by the left guide slot 2613 side. The restriction of the edge maintains the left trial lever 265 and the left positioning lever 263 at a joint angle. 1342012. The rich disc D continues to push the force of the wheel, as shown in Fig. 7, which is the position of the positioning device of the present invention to guide the disc D to the positioning position, and the locking posts 2642, 2652 of the strip 264 and the left disc 265 At the same time, when n is solved, the right front pivot joint 2623 and the left pivot joint 2633 are pushed, so that the right positioning = 262 and the left positioning rod 263 are respectively rotated at the center of the right pivot point 2621 and the left pivot point 2631 ^, and the right front pivot joint 2623 and the left pivot The contact 2633 will respectively move the right guiding slot 2611 and the left guiding slot 2613, and the left locking lever 263 and the right are moved because the linking tip 2622 is embedded in the linking slot 2632 and moves along the linking slot 2614. The positioning rod 262 forms a linkage, so that the left towing point 2633 and the right frame contact 2623 are centered on the clamping mechanism 23, and simultaneously form an opening or closing 'in the right front pivot joint 2623 and the left pivot joint 2633 Under the arc edge of the optical disc D, the positioning position of the optical disc D is automatically aligned to the positive clamping mechanism 23, and is pushed backward until the left positioning rod 263 and the right positioning rod 262 are the left stopper 2616 and the right label respectively. Block 2615 blocks until the same time, when the disc D is pushed back, due to the start lever 266 1 is pivoted to the right positioning rod 262 by the right rear pivot joint 2624, and the tab end 2665 is moved backward with the right positioning rod 262. The right rear pivot joint 2624 is moved along the rotating slot 2612 to allow the other end of the starting lever 2661. The spool 2663 can only move horizontally in the chute 2664 of the touch block 2662, and cannot move the touch block 2662 until the disc D is positioned, and the rotation of the start lever 2661 can be pushed, and the moving block 2262 is emitted to the disc D. The positioning signal is used to complete the positioning of the optical disc, and the subsequent operation of the optical disc drive to lower the scroll wheel and the movement of the movement is started. As shown in FIG. 8, the positioning device of the present invention enables the positioning of the small-sized optical disc c. When the small-sized optical disc is inserted into the optical disc drive 2 from the center, the roller module is disposed transversely to the front end of the casing 21, The optical disc c and the rotating roller 251' are pushed to push the optical disc C into the optical disc drive 20. From the small-sized optical disc c: inserted from the center of the optical disc drive 20, the periphery of the smaller-diameter optical disc c does not touch and rotate the right trial lever 264 and the left trial lever 265, and the locking posts 2642, 2652 cannot be turned out. The left limiting slot 2618 and the right limiting slot 2617 cannot unlock 1342012 to fix the left clamping lever 263 and the right positioning lever 262 in the folded position, and the = combined position can be utilized centering on the clamping mechanism 23 Symmetrical right front pivot, point 2623 and left pivot joint 2633, two points contact the arc edge of the optical disc C, ^ disc C reaches the position of positioning, at the same time, the arc edge of the optical disc c will also move the end 2665, due to When the right positioning rod 262 is not moved, the starting rod 2661 can be rotated about the right rear pivot point 2624, and the moving contact block 2662 emits the position signal of the optical disc C to complete the positioning of the small-sized optical disc c. As shown in Fig. 9, the positioning device of the present invention guides the side edge into the operation of positioning the small-sized optical disk of the optical disk drive. When the small-sized optical disc c is inserted into the optical disc drive 2 from the side of the entrance 211, the roller 251 linearly pushes the small-sized optical disc C into the optical disc drive 20 at the insertion position, taking the left insertion as an example, and the optical disc is first contacted to the flat. The left decision bar 265 extending to the left side of the clamp mechanism 23, the left slice * Xiaogan 265 is rotated about the left plug contact 2633, so that the lock post 2652 is rotated out of the left limit slot 2618, followed by the optical disc C The perimeter touches the left pivot joint 2633. However, since the optical disc C does not touch and rotate the right trial lever 264, the locking post 2642 cannot be rotated out of the right limiting slot 2617, and cannot be unlocked, so that the right clamping lever 262 is still fixed at the folded position, and the right positioning is performed. The rod 262 is inserted into the linking groove 2632 and the interlocking slot 2614 via the rear end linking tip 2622 to prevent the left positioning rod 263 from moving. Even if the force of the optical disc c is pushed by the roller, the left positioning rod 263 cannot be forced to be centered on the left pivot point 2631. After the rotation is generated, the locking post 2642 is rotated out of the right limiting slot 2617, and then rotated to enter the left slot 2634 limit, and can no longer be rotated to maintain an oblique connection angle with the left positioning lever 263 to guide the optical disc C to the optical disc. The center line of the machine 20 is offset to contact the right front pivot point 2623. However, the small-sized optical disc c has a small diameter, and the locking post 2642 and the locking post 2652 cannot be unlocked at the same time, as shown by the position of the dotted line. Positioning as shown in Figure 8 above. When the optical disc c is inserted to the right side, the actuating action is similar to the aforementioned operation. When the side of the large-size optical disc is inserted into the optical disc drive, the disc of the other side cannot be unlocked, and the center line of the optical disc drive is deflected, but the larger-sized optical disc of the larger diameter can be unlocked. The side pin is fixed, and the column is locked at the same time, and after the solution of the j center line is offset, and then the other side is moved to complete the operation, the two positioning rods are activated by the aforementioned action, and the position of the n: n is activated. The two positioning devices attached to the front end of the two positioning rods can be used to distinguish different optical discs; == method = the same, the lock is judged, the positional lever is moved backwards, and when the unlocking is possible, the two fixed rods are also It can guide the reliability of different sizes of discs from ΐ炎ΐ德. In addition, the strips that are extended by the positioning rods, and the positioning rods are blocked to form an oblique connection, and the optical discs that are laterally fed into the sheets can be guided to prevent accidental contact with other mechanisms and to avoid damage to the optical discs. Therefore, the optical disc positioning device of the present invention can realize the guiding, judging and positioning operation of the optical disc by using a simple structure, thereby not only reducing the stacking of the rods, thinning the optical disc drive, but also simplifying the structure, reducing the parts and manufacturing assembly. the cost of. The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited to the preferred embodiments. All of them are within the scope of the patent application of the present invention. 13 1342012- [Simple description of the drawing] Fig. 1 is a perspective view of a conventional optical disk drive. 2 is a perspective view of an optical disk drive of the present invention. Figure 3 is a top plan view of the optical disk drive of the present invention. Figure 4 is a partial enlarged view of the positioning device of the present invention. FIG. 5 is a partial enlarged view of the unlocking of the positioning device of the present invention. FIG. 6 is a partial enlarged view of the positioning device of the present invention after being unlocked. Fig. 7 is a top view showing the positioning of a large-sized optical disc of the optical disc drive of the present invention. Fig. 8 is a top view showing the positioning of a small-sized optical disc of the optical disc drive of the present invention. Fig. 9 is a view showing the positioning of the leading side of the positioning device inserted into the optical disk according to the present invention. [Main component symbol description] 20 CD player 21 Case 211 Entrance 221 Read head 222 Spindle motor 22 Movement 23 Clamp mechanism 231 Clamp cover 24 Transmission 25 Roller module 251 Roller 26 Positioning device 261 Substrate 2611 Right guide Slot hole 2612 Rotating slot 2613 Left guide slot 2614 Linking slot 1342012 2615 Right stop 2616 Left stop 2617 Right limit slot 2618 Left limit slot 262 Right positioning lever 2621 Right pivot point 2622 Linking tip 2623 Right front pivoting Point 2624 Right rear pivot joint 2625 Right card slot 263 Left positioning rod 2631 Left pivot point 2632 Linking groove 2633 Left pivot joint 2634 Left card slot 264 Right judgment rod 2641 Tab column 2642 Locking column 265 Left panel rod 2651 Tab Column 2652 Locking post 266 Starting unit 2661 Actuating lever 2662 Actuating block 2663 Sliding post 2664 Chute 2665 Tab end C Small size disc D Large size disc