200828276 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驅 動讀取頭，沿著光碟片徑向來回移動，以讀寫資料之傳動 裝置。 【先前技術】BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk drive, particularly to a drive device for driving a read head in a CD player to move back and forth along a radial direction of the optical disk to read and write data. [Prior Art]
電子產品的消費趨勢以輕薄短小為主流，消費者除了考慮價 格因素，作為選擇採購的對象外，重量輕及厚度薄的產品，^不 佔空間且容易攜帶，頗受消費者的青睞，也成為產品開發所追求 的主要目標。 請參考圖1 ’為習知吸入式光碟機10之侧剖面結構， 光碟機10機殼11内設有一機芯12，機芯12 —端上設有 轉動光碟片D的主軸馬達13(Spindle Motor)，沿著主軸 馬達11徑向，設置一讀取頭14 (Pick-up Head)，靠近讀 取頭14移動的路徑旁，設有一傳動馬達15(Feeding Motor)，傳動馬達15連結一螺桿16，讀取頭14結合一彈 性的連接齒17，以連接齒17頂壓於螺桿16的螺紋，機芯 12另一端樞接於光碟機1Q機殼11。 當光碟機10進片時，機芯12設主轴馬達13的一端 下降，使較凸㈣主轴馬達13離開光 至光碟片D定位後，機芯、12再上升，帶動主mi 15,轉動螺桿16，使連啟動傳動馬 樞接端的初純置7m㈣i4退目至靠麟： 降，使主軸馬達13設轴馬達13的一端· 路徑，再退離柄^財心孔，並離開退片丨 兀咮朽D，以完成退片。 5 200828276 由於習知光碟機10的傳動馬達15及螺桿16，係固定 在機芯12上，以便帶動其上的讀取頭14，且因設置的空 間限制及簡化結構，傳動馬達15係設於主轴馬達13侧邊， 且為配合讀取頭14由光碟片D下方讀寫的移動路徑，傳動 馬達15設置的位置低於主轴馬達13，一般在12.7mm的薄 型光碟機，機芯12下降時，傳動馬達15雖接觸到機殼11， 但主轴馬達13下降的高度，已足夠光碟片d進退片的安全 距離。然而，當光碟機10需要再縮減厚度至1〇咖1以下時（如 虛線所示），隨機芯12下降而斜置的傳動馬達15，一角抵 觸機殼11，而無法再行縮減厚度。因此，習知光碟機在薄 化上，讀取頭的傳動裝置仍有問題需待解決。 【發明内容】 本發明之目的在提供一種光碟機傳動裝置，藉由將傳 動裝置固定於機殼，避免升降斜置，以利光碟機更行薄化。 本發明之另一目的在提供一種光碟機傳動裝置，利用 ^設傳動裝置於機殼，降低機芯整體的重量，減少驅動機 芯移動所需的動力，簡化光碟機進退片機構扭力分配。 本發明再一目的在提供一種光碟機僂動奘署，磕少僂The consumption trend of electronic products is dominated by light and short. In addition to considering the price factor, consumers are the target of purchasing, and the products with light weight and thin thickness do not occupy space and are easy to carry. They are favored by consumers and become The main goal pursued by product development. Referring to FIG. 1 'is a side cross-sectional structure of a conventional slot-type optical disc drive 10, a movement 12 is disposed in the casing 11 of the optical disc drive 10, and a spindle motor 13 for rotating the optical disc D is disposed on the end of the movement 12 (Spindle Motor) A pick-up head 14 is disposed along the radial direction of the spindle motor 11, and a drive motor 15 (Feeding Motor) is disposed adjacent to the path of the movement of the read head 14, and the drive motor 15 is coupled to a screw 16 The reading head 14 is coupled with a resilient connecting tooth 17 for pressing the connecting teeth 17 against the threads of the screw 16, and the other end of the movement 12 is pivotally connected to the optical disk drive 1Q housing 11. When the optical disk drive 10 is fed into the film, the movement 12 is provided with one end of the spindle motor 13 lowered, so that the convex (four) spindle motor 13 is separated from the light to the optical disk D, and then the movement, 12 is raised again, and the main mi 15, the rotating screw 16 is driven. So that the initial pure position of the starter transmission arm joint is 7m (four) i4 retreats to the lining: lower, so that the spindle motor 13 sets the end of the shaft motor 13 and the path, and then retreats from the handle ^财心孔, and leaves the retraction 丨兀咮Decay D to complete the retreat. 5 200828276 The drive motor 15 and the screw 16 of the conventional optical disc drive 10 are fixed to the movement 12 so as to drive the read head 14 thereon, and the transmission motor 15 is attached to the space due to the space limitation and simplified structure. The side of the spindle motor 13 and the moving path for reading and writing the reading head 14 from below the optical disc D, the position of the transmission motor 15 is lower than that of the spindle motor 13, generally in a thin optical disc drive of 12.7 mm, when the movement 12 is lowered Although the transmission motor 15 is in contact with the casing 11, the height at which the spindle motor 13 is lowered is sufficient for the safe distance of the disc d to and from the sheet. However, when the optical disk drive 10 needs to be further reduced in thickness to 1 gram or less (as indicated by a broken line), the drive motor 15 which is tilted and tilted by the random core 12 abuts against the casing 11 and cannot be reduced in thickness. Therefore, the conventional optical disk drive is thin, and the transmission of the read head still has a problem to be solved. SUMMARY OF THE INVENTION An object of the present invention is to provide an optical disc drive transmission device which can be prevented from being tilted and lowered by fixing the transmission device to the casing to facilitate thinning of the optical disc drive. Another object of the present invention is to provide a drive mechanism for an optical disc drive, which utilizes a transmission device to reduce the overall weight of the movement, reduces the power required to drive the movement of the movement, and simplifies the torque distribution of the advance and retract mechanism of the optical disc drive. A further object of the present invention is to provide a CD player to be activated and reduced.
6 200828276 【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，為設有本發明傳動裝置的光碟機20，光 碟機20包含機殼21、機芯22及傳動裝置23等。主要將 機芯22的一端柩接於機殼21的周邊，利用固定在機殼21 的傳動裝置23，作為傳動機芯22上機件的動力。 其中，機殼21分為上機殼24與下機殼25(請參圖4)， 上機殼24與下機殼25之間具有一中空的內部，機殼21的 前端設一出入口 26，機殼25靠近出入口 26的侧邊，設有 ® —樞軸27。機芯22為一平板狀，設於機殼21的内部，機 芯22的中間，沿著長轴的方向挖設一長槽孔28，長槽孔 28的一端設有主轴馬達29,沿著主軸馬達29的徑向兩侧， 於長槽孔28兩邊，分別平行設置主導桿30及副導桿31， 長槽孔28於主導桿30的外側，留出一穿孔32。一滑車33 兩端分別跨置於主導桿30及副導桿31，受主導桿30及副 導桿31引導，沿著主轴馬達29的徑向滑動，讓滑車33上 承載的一讀取頭34，於長槽孔28中移動。機芯22的一端 樞接在機殼25侧邊的樞軸27，使設主軸馬達29的一端， φ 受光碟機20的進退片機構（圖未示）驅動，產生轉動而上升 或下降。 此外，滑車33於靠主導桿30的一側，連接一連結裝 置35隨滑車33移動，連結裝置35向主導桿30外侧，凸 出一連接齒36，連接齒36利用一彈簧37由後支撐，使連 接齒36具有移動的彈性。另外，傳動裝置23固定於相對 機芯22穿孔32位置的機殼21上，即固定於下機殼上，使 穿孔32配合傳動裝置23的外形，於機芯22上下轉動時， 讓傳動裝置23自由穿過，而不碰觸及機芯22的穿孔32。 如圖3所示，本發明的傳動裝置23，包含一傳動馬達 7 200828276 38、螺桿39及支架40，支架40具有一座體41，座體41 為板狀，其上挖設有複數個螺孔42，座體41 一側兩端分 別向上凸伸預定距離的固定片43a、43b，用以固定螺桿& 的兩端，並讓螺桿39可自由轉動，螺桿39的螺紋可與連 結裝置35的連接齒36嚆合❹傳動馬達38則固定於螺桿 3>9 —端固定片43b的另一側，且與螺桿39 一端產生連結， 讓傳動馬達38可轉動螺桿39。 如圖4所示，為圖2中A-A線局部剖面，顯示本發明 光碟機傳動裝置23，係利用數個螺絲穿過座體41的螺孔 _ 42，固定在相對機芯22穿孔32位置的下機殼25上，讓向 上凸4申預定距離的固定片43a、43b，使固定的螺桿39具 有正常驅動讀取頭34的水平高度，並令螺桿39的螺紋與 連接齒36相嚅合。當光碟機2〇進片時，機芯22原位於下 降的位置’而讀取頭34位於機芯22樞接一端的初始位置， ，使傳動裝置的螺桿39與機芯22形成一角度，然而，機 芯22下斜的角度很小，約為18度，而主轴馬達29 一端 下降的距離，僅約l-2mm，加以讀取頭34又位於較靠近機 芯22樞接位置，下降的距離有限，使得連接齒36與螺桿 相對移動的距離相當小，而讓連接齒36隨機芯22下斜 • 時，=能利用連接齒3δ的彈性，維持與螺桿39螺紋的嚅 合狀態，不致於脫齒，影響讀取頭34的傳動。當光碟片1) 到達定時，機芯22以樞接的一端為中心轉動，其上的穿孔 32讓，動裝置23不干涉的移動，使設主軸馬達29 —端上 升至箝住光碟片D的位置，並轉動光碟片d，如圖中虛線 所示’連接齒36在有限的移動距離中，仍保持在初始位 置’並利用其彈性頂壓住螺桿39的螺紋，維持嚆合狀態， 至正常水平驅動狀態，再由傳動馬達38轉動螺桿39，驅 動連接齒36順著螺桿39螺蚊移動，以移動讀取頭34讀寫 光碟片D上資料。 8 200828276 性頂LH ’讀取頭34回至初始位置’以連接齒36弹 c吏主轴馬達29下降脫離光碟片D的中二中 軸馬達29離開光碟片d移動=S 後退出光碟片D，以完成退片。 因此，本發明光碟機傳動裝置，於機芯以樞接的一端 ί Γΐ ’轉動上升或τ降’讓11定在τ機殼的傳動裝置， Ξ 不妨礙機芯下降接觸下機 署碟ίϊί度得以再打薄化。此外，本發明光碟機傳動裝 【;:„置平設於下機殼，讓機芯降低裝 ί=ίϊ機構扭力分配更加容易且有彈::ϊ 過；中，能維持連接齒售合於螺桿螺紋Ϊ使 動馬達亦可不受設置位置的限制，例= 效而屬本發明的技術範脅。 次力 η Ϊ亡所述者’僅為用以方便說明本發明之較佳每， 例’本發明之範圍不限於該等較佳：广，=争土鈀 做，任何變更，於不脫離本發明之精 發= 請專利之範圍。 f ^白屬本發明申 9 200828276 【圖式簡單說明】 圖1為習知光碟機之侧剖面圖。 圖2為設有本發明光碟機傳動裝置之上視圖。 圖3為本發明光碟機傳動裝置之上視圖。 圖4為圖2中線A-A本發明光碟機傳動裝置之侧剖面作動 示意圖。[Embodiment] The present invention has been made in view of the above-described objects, the technical means and the efficiencies thereof, and the preferred embodiments are described below with reference to the drawings. Referring to Figure 2, there is an optical disk drive 20 provided with the transmission of the present invention. The optical disk drive 20 includes a casing 21, a movement 22, a transmission 23 and the like. Mainly, one end of the movement 22 is spliced to the periphery of the casing 21, and the transmission 23 fixed to the casing 21 is used as the power for transmitting the components on the movement 22. The casing 21 is divided into an upper casing 24 and a lower casing 25 (see FIG. 4). A hollow interior is defined between the upper casing 24 and the lower casing 25. The front end of the casing 21 is provided with an inlet and outlet 26. The casing 25 is adjacent to the side of the inlet and outlet 26 and is provided with a ® pivot 27 . The movement 22 is in the form of a flat plate, and is disposed inside the casing 21. In the middle of the movement 22, a long slot 28 is dug along the direction of the long axis, and one end of the long slot 28 is provided with a spindle motor 29 along The two sides of the spindle motor 29 are disposed on the two sides of the long slot 28, and the main rod 30 and the sub-guide rod 31 are respectively disposed in parallel. The long slot hole 28 is disposed outside the main rod 30, leaving a through hole 32. The two ends of a pulley 33 are respectively disposed on the main rod 30 and the sub-guide rod 31, guided by the main rod 30 and the sub-guide rod 31, and slide along the radial direction of the spindle motor 29 to allow a reading head 34 carried on the trolley 33. Move in the long slot 28. One end of the movement 22 is pivotally connected to the pivot 27 on the side of the casing 25, so that one end of the spindle motor 29, φ is driven by the advance and retract mechanism (not shown) of the optical disk drive 20, and is rotated to rise or fall. In addition, the pulley 33 is connected to a side of the main rod 30, and a connecting device 35 is connected to move along the trolley 33. The connecting device 35 protrudes toward the outside of the main rod 30, and a connecting tooth 36 is protruded. The connecting tooth 36 is supported by a spring 37. The connecting teeth 36 are made to have a moving elasticity. In addition, the transmission device 23 is fixed to the casing 21 at the position of the perforation 32 of the movement 22, that is, fixed to the lower casing, so that the perforation 32 matches the outer shape of the transmission device 23. When the movement 22 is rotated up and down, the transmission device 23 is allowed to be transmitted. It passes freely without touching the perforations 32 of the movement 22. As shown in FIG. 3, the transmission device 23 of the present invention comprises a transmission motor 7 200828276 38, a screw 39 and a bracket 40. The bracket 40 has a body 41. The base 41 has a plate shape, and a plurality of screw holes are drilled therein. a fixing piece 43a, 43b which protrudes upward by a predetermined distance at both ends of the seat body 41 for fixing the both ends of the screw & and allowing the screw 39 to freely rotate, the thread of the screw 39 being connectable to the coupling device 35 The connecting tooth 36 is coupled to the other side of the screw 3 > 9 - end fixing piece 43b, and is coupled to one end of the screw 39 to allow the transmission motor 38 to rotate the screw 39. As shown in FIG. 4, which is a partial cross-section of the AA line in FIG. 2, the optical disc drive transmission 23 of the present invention is shown, which is fixed to the perforation 32 of the opposite movement 22 by a plurality of screws passing through the screw holes _42 of the base 41. On the lower casing 25, the fixing pieces 43a, 43b which are protruded upward by a predetermined distance are provided so that the fixed screw 39 has the level which normally drives the reading head 34, and the thread of the screw 39 is engaged with the connecting teeth 36. When the optical disk drive 2 is pushed into the film, the movement 22 is originally in the lowered position 'the read head 34 is located at the initial position of the pivotal end of the movement 22, so that the screw 39 of the transmission forms an angle with the movement 22, however The angle of the downward movement of the movement 22 is small, about 18 degrees, and the distance at which one end of the spindle motor 29 is lowered is only about 1 to 2 mm, and the reading head 34 is located closer to the pivotal position of the movement 22, and the distance is lowered. The distance between the connecting teeth 36 and the screw is relatively small, and the connecting teeth 36 are inclined by the inner core 22, and the elastic state of the connecting teeth 3δ can be used to maintain the twisting state with the thread of the screw 39, so as not to take off. The teeth affect the drive of the read head 34. When the optical disc 1) arrives at a timing, the movement 22 rotates around the pivoted end, and the perforations 32 thereon allow the movement of the moving device 23 without interference, so that the end of the spindle motor 29 is raised to clamp the optical disc D. Position and rotate the disc d, as shown by the dashed line in the figure, 'the connecting tooth 36 remains in the initial position within a limited moving distance' and presses the thread of the screw 39 with its elastic top to maintain the twisted state, to normal In the horizontal driving state, the drive motor 38 rotates the screw 39, and the drive connecting teeth 36 move along the screw 39 to move the reading head 34 to read and write the data on the optical disc D. 8 200828276 The top LH 'read head 34 is returned to the initial position' to connect the teeth 36 to b. The spindle motor 29 descends from the optical disc D. The middle two-axis motor 29 leaves the optical disc d and then moves to the optical disc D. Complete the withdrawal. Therefore, the optical disc drive of the present invention is disposed at the pivoting end of the movement, 转动 'rotating up or τ drop', so that the 11 is fixed in the transmission of the τ casing, Ξ does not hinder the movement of the movement to contact the lower disc. Can be thinned again. In addition, the optical disc drive of the present invention is installed in the lower casing, so that the movement of the movement is reduced, and the torque distribution of the mechanism is easier and more elastic: in the middle; The screw thread Ϊ Ϊ Ϊ 动 动 动 动 动 动 动 动 动 动 动 动 动 动 动 动 螺杆 螺杆 螺杆 螺杆 螺杆 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次 次The scope of the present invention is not limited to the above-mentioned preferred: wide, = competitive palladium, any change, without departing from the scope of the present invention = the scope of the patent. f ^ white belongs to the invention 9 200828276 Figure 1 is a side elevational view of a conventional optical disk drive. Figure 2 is a top view of the optical disk drive of the present invention. Figure 3 is a top view of the optical disk drive of the present invention. Figure 4 is a line AA of Figure 2. A schematic diagram of the side profile actuation of the actuator of the optical disc drive is invented.
【主要元件符號說明】 20 光碟機 32 穿孔 21 機殼 33 滑車 22 機芯 34 讀取頭 23 傳動裝置 35 連結裝置 24 上機殼 36 連接齒 25 下機殼 37 彈簧 26 出入口 38 傳動馬達 27 樞軸 39 螺桿 28 長槽孔 40 支架 29 主轴馬達 41 座體 30 主導桿 42 螺孔 31 副導桿 43a 、43b固定片 D 光碟片[Main component symbol description] 20 CD player 32 Perforation 21 Case 33 Pulley 22 Movement 34 Read head 23 Transmission 35 Connecting device 24 Upper casing 36 Connecting teeth 25 Lower casing 37 Spring 26 Entrance and exit 38 Drive motor 27 Pivot 39 Screw 28 Long slot 40 Bracket 29 Spindle motor 41 Seat 30 Main rod 42 Screw hole 31 Sub-guide rod 43a, 43b Fixed piece D Optical disc