200941467 九、發明說明： 【發明所屬之技術領域】 本發明有關-種光碟機，尤其是關於光碟機中用以驅 動讀取頭沿著導桿來回移動，以讀寫光碟片資料之傳動裳 置。 【先前技術】 ⑩ 隨著藍光（Blu-my)技術的發展，相同直徑12咖光 片的儲存容量，已由DVD的4. 7GB急遽增加至咖，光碑 片的資料記號相對變為更加微小及密集。為了讀寫微小密 集的貧料記號，讀取頭投射至光碟片的光點直徑，也 光的1.32，縮小至藍光的叫m。而： 對要求更為精密，崎低光碟機讀寫的㈣困難度機構相 請同時參相丨及圖2,圖丨為習知柄機用 頃取頭的傳動裝置10,圖2為圖i中線“沿 = 的側剖面圖。習知傳動裝置10主要由兩平行的主導乂 副導桿12，分別套設於讀取頭13兩端的滑# 14，二道 讀取頭U在固定方向滑動。靠近其中一端 引導 結合座15,結合座15 4二 (驗）16。主導捍U近旁設置一平行的螺桿1?，=條 較滑套14凸出’並嵌入螺桿17的螺紋中形成 、16 Π的一端設有傳動馬達（FeedingM〇t〇r)18，形成σ力螺禅 ===螺桿17正向或反向轉動，帶動齒二200941467 IX. Description of the Invention: [Technical Field] The present invention relates to an optical disc drive, and more particularly to a drive for driving a read head to move back and forth along a guide bar to read and write optical disc data. . [Prior Art] 10 With the development of Blu-ray technology, the storage capacity of the same diameter 12 coffee chip has been increased from the 4. 7GB of DVD to the coffee, and the data mark of the light tablet has become relatively smaller. And intensive. In order to read and write the micro-dense poor mark, the diameter of the spot projected by the read head to the optical disc is also 1.32, which is reduced to the blue light called m. And: For the more demanding, low-definition CD-ROM machine to read and write (four) difficult degree mechanism please refer to the same phase and Figure 2, Figure is the known handle machine to take the head of the transmission device 10, Figure 2 is Figure i A side cross-sectional view of the midline "edge =. The conventional transmission device 10 is mainly composed of two parallel main guide rollers 12, which are respectively sleeved on the ends of the read head 13 and the second read head U is in a fixed direction. Sliding. Close to one end of the guiding joint 15 and the joint 15 4 (test) 16. A parallel screw 1 is arranged near the main 捍U, and the = strip is protruded from the sliding sleeve 14 and embedded in the thread of the screw 17, The end of the 16 设有 is provided with a transmission motor (FeedingM〇t〇r) 18, which forms a σ force screw zen === the screw 17 rotates in the forward or reverse direction, and drives the tooth 2
=Λ 移動，使讀取頭13順著主導棹U V杯12來回滑動至定位，以讀寫資料。 1、副 200941467 然而，習知的傳動裝置ίο為了讓讀取頭13能自由在 主導桿11、副導桿12上來回滑動，滑套14與主導桿11、 副導桿12間的製造公差採滑動配合的設計。因滑動配合的 設計’滑套14與主導桿11、副導桿12間一定存在餘隙 當來回移動讀取頭13至各定位讀取資料時，傳動馬達18 需頻繁改變正向或反向轉_桿17 ’導致螺紋作用在齒條 16上的作用力方向隨之改變，滑套14與導桿在餘隙間倚 靠的位置不停變換，使得讀取頭13在來回滑動過程中，產 生不同方向的偏擺，讓投射光速無法維持一定方向。此外， 光碟機以高速來回移動讀取頭至定位讀取資料，餘隙G無 法提供滑套Η與導桿間穩固切，亦會造成讀取頭13^ 回移動時激烈振動。偏擺及振動均會增加讀取頭13 射光束對準資料記號的困難度。尤其在資料記麵小密又 集及精密度越高的情況下，控制的困難 習知光碟機在讀取頭的傳動裝置上，拉士巧”貝者口此 【發明内容】 亟待解決。 本發明之目的在提供一種光碟機傳動 頭及導桿間形成-預壓力，使兩者 ^错由項取 餘隙。 支撐，以消除 本發明另一目的在提供一種 力臂圓錄的接觸端，與圓椁狀=:動袋置’利用預 機，以降低讀取頭移動磨擦力。_觸，減少接觸面 本發明再—目的在提供—種㈣％ 頭或結合座一體延伸預力臂， 裝置由碩取 从降低零件製造組裝成本。 200941467 為了達到前述發明的目的，本發明之光碟機傳動裝置， 為讀取頭兩端分別設滑套，兩平行導桿分別穿套於讀取頭 兩端的滑套，引導讀取頭滑動，預力臂由讀取頭直接一體 延伸形成連結於讀取頭。預力臂前端形成弧面狀接觸端， 凸伸至其中一導桿，以其接觸端與導桿形成點接觸，施加 預力於該導桿。 本發明之光碟機傳動裝置，亦可為讀取頭兩端分別設滑 套，兩平行導桿分別穿套於讀取頭兩端的滑套，引導讀取 ❹ 頭滑動。讀取頭靠近一端滑套設有一固定面，固定一結合 座，結合座前端面設有齒條，侧端面向外固定一預力臂， 使預力臂與讀取頭產生連結。預力臂前端形成弧面狀接觸 端，結合座以未接觸方式跨過導桿，讓預力臂凸伸至其中 一導桿，以其接觸端與導桿形成點接觸，施加預力於該導 桿。 【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 ⑩ 功效，茲舉較佳實施例，並配合圖式加以說明如下。 請參考圖3,為本發明第一實施例之光碟機傳動裝置 20。本發明傳動裝置20包含兩導桿21、讀取頭22、結合 座23及齒條24。主要由兩導桿21分別穿套於讀取頭22 的兩端，引導讀取頭22在固定方向上滑動，讀取頭22在 靠近其中一導桿21的一端連設結合座23，結合座23前端 面設凸出的齒條24，與動力源連接，以驅動讀取頭22來 回讀寫資料。 200941467 其中，兩導桿21相互平行設置。讀取頭22兩端各設 滑套25，分別穿套在兩導桿21上，以便沿著兩導桿21滑 動。為穩定傳動，本實施例以讀取頭22在受動力源驅動端 設有兩滑套25為例作說明，但本發明不限於一端設兩滑套 25，一滑套25亦可適用。兩滑套25分隔一中空距離。讀 取頭22在靠近兩滑套25，設有一固定面26，固定面26分 散設有固定銷27及螺孔28，用以固定結合座23。 如圖4所示，為本發明第一實施例之結合座23。結合 座23包含一本體29,本體29相對固定銷27及螺孔28(請 參圖3)的位置，設有配合的數個槽孔30。本體29的前端 凸出，前端面設有齒條24。本體29的側端面則連接具有 彈性一預力臂31。預力臂31水平懸空向外延伸一距離， 前端形成一接觸端32。接觸端32向下形成弧面狀，該弧 面狀可為圓柱弧面或球弧面，本實施例以圓柱弧面為例。 預力臂31連接本體29的方式，可為結合座23 —體延伸形 ❹成。 請再參考圖3，結合座23的數個槽孔30嵌合於固定 面26上的固定銷27及螺孔28，藉由一螺絲33鎖入螺孔 28，將結合座23固定在固定面26上，與讀取頭22形成連 結。結合座23穿越兩滑套25間的中空距離，以未與導桿 21產生接觸方式，跨過兩滑套25間露出的導桿21，讓結 合座23前端面的齒條24較兩滑套25更為Λ出，且令結合 • 座23側端面的預力臂31，恰位於兩滑套25間露出的導桿 21上方，以其接觸端32觸壓導桿21。 8 200941467 如圖5所示，為圖3中線B-B沿著導桿21的側剑 力劈士丨田，，、丨甘祕織姑蔽ί音$圖。 當預力臂31利用彈性，以其接觸端32觸壓導样^ 預力壓於導桿21上時，預力臂31將頂推導桿靠: 頭22的滑套25 —侧，與滑套25形成接觸，消除兩向讀取 餘隙。在讀取頭22滑動中，所受作用力方向的改變。間的 速移動所產生的振動，均可由預力臂31所施加的預或者而 以抵抗或抵銷。餘隙一消除，導桿21即可穩固支撐，，加 22滑動。此外，預力臂31以其圓柱面狀的接觸”\讀取項 ❹ 而32挺奋孩 圓桿狀的導桿21，在兩者曲面方向相互垂直時，； m 兩者將形 成點接觸面積，進而降低讀取頭22滑動的磨擦Λ ^ 々 ’ 务旦/ 響讀取頭22的正常移動。 的 因此，本發明第一實施例之光碟機傳動裝署 息，即可藉 由結合座設預力臂，以其圓柱面狀的接觸端，預 上，於讀取頭及導桿間形成一預壓力，不僅減少與導浐接 觸面機’降低讀取頭移動磨擦力，且可消除讀取頭及^才曰 間的餘隙，避免讀取頭的偏擺振動，提高光碟機傳動妒^ ⑩的精密度，降低光碟機控制系統的困難性。此外，預^臂 亦可在製造結合座時，以一體成型直接在結合座形成預力 臂，減少製造組裝預力臂零件之成本。 如圖6所示，為本發明第二實施例之先碟機傳動裝置 40。第二實施例光碟機傳動裝置4〇之兩導桿41、讀取頭 42、結合座43及齒條44等結構配置，基本上與第一實施 例之光碟機傳動裝置相同。第二實施例光碟機傳動裝置4〇 不同處在於，預力臂45直接固定在讀取頭42上。由讀取 200941467 ❹= Λ Move, so that the read head 13 slides back and forth along the main 棹U V cup 12 to position to read and write data. 1, Deputy 200941467 However, the conventional transmission device ίο in order to allow the read head 13 to freely slide back and forth on the main rod 11, the sub-guide 12, the manufacturing tolerance between the sliding sleeve 14 and the main rod 11 and the sub-guide 12 Sliding fit design. Due to the sliding fit design, there must be a clearance between the sliding sleeve 14 and the main rod 11 and the sub-guide rod 12. When the reading head 13 is moved back and forth to each positioning reading data, the transmission motor 18 needs to frequently change the forward or reverse rotation. The _ rod 17' causes the direction of the force acting on the rack 16 to change, and the position of the sliding sleeve 14 and the guide rod leaning between the clearances constantly changes, so that the reading head 13 generates different directions during the sliding back and forth. The yaw makes the projected speed of light unable to maintain a certain direction. In addition, the optical disc drive moves the read head back and forth to the position to read the data at a high speed, and the clearance G cannot provide a stable cut between the sliding sleeve and the guide rod, and also causes the vibration of the reading head 13 when moving back. Both yaw and vibration increase the difficulty of the read head 13 beam alignment data mark. Especially in the case where the data is small and dense, and the precision is higher, the difficulty of control is known to the optical disc drive on the transmission of the read head, and the product of the invention is urgently to be solved. SUMMARY OF THE INVENTION The object of the invention is to provide a pre-pressure between the drive head of the optical disc drive and the guide rod, so that the two are offset by the item. Supporting to eliminate the other object of the present invention is to provide a contact end of the force arm circular recording, With the round shape =: the movable bag is set to 'use the pre-machine to reduce the moving friction of the reading head. _ Touch, reduce the contact surface. The present invention is further to provide a (four)% head or a joint extending the pre-arm, In order to achieve the purpose of the foregoing invention, the optical disc drive of the present invention has a sliding sleeve respectively disposed at two ends of the reading head, and two parallel guiding rods are respectively sleeved on the reading head. The sliding sleeve of the end guides the sliding of the reading head, and the pre-arm is integrally extended by the reading head to be coupled to the reading head. The front end of the pre-arm forms a curved contact end, and protrudes to one of the guiding rods, and the contact end thereof Forming points with the guide rod Touching, applying a pre-force to the guide rod. The optical disc drive of the present invention may also be provided with a sliding sleeve at each end of the reading head, and the two parallel guiding rods respectively pass through the sliding sleeves at the two ends of the reading head to guide the reading. The head is slid. The sliding head of the reading head is provided with a fixing surface, and a fixing seat is fixed. The front end surface of the joint is provided with a rack, and the side end surface is fixed with a pre-arm, so that the pre-arm and the reading head are connected. The front end of the pre-force arm forms a curved contact end, and the joint seat crosses the guide rod in an uncontacted manner, so that the pre-force arm protrudes to one of the guide rods, and the contact end forms a point contact with the guide rod, and the pre-force is applied [Embodiment] The present invention relates to the technical means and the 10 functions thereof for achieving the above object, and the preferred embodiments are described below with reference to the drawings. The optical disc drive device 20 of the embodiment. The transmission device 20 of the present invention comprises two guiding rods 21, a reading head 22, a coupling seat 23 and a rack 24. The two guiding rods 21 are mainly sleeved on the reading head 22 respectively. End, guide the read head 22 to slide in a fixed direction, read The take-up head 22 is connected with a coupling seat 23 at one end of one of the guide rods 21, and a protruding rack 24 is disposed on the front end surface of the joint base 23 to be connected with the power source to drive the read head 22 to read and write data back and forth. 200941467 The two guiding rods 21 are disposed in parallel with each other. The sliding heads 25 are respectively disposed at two ends of the reading head 22, and are respectively sleeved on the two guiding rods 21 so as to slide along the two guiding rods 21. For the stable transmission, the reading head of the embodiment is used. 22 is exemplified by two sliding sleeves 25 at the driving end of the power source. However, the present invention is not limited to two sliding sleeves 25 at one end, and a sliding sleeve 25 is also applicable. The two sliding sleeves 25 are separated by a hollow distance. 22 is adjacent to the two sliding sleeves 25, and is provided with a fixing surface 26. The fixing surface 26 is provided with a fixing pin 27 and a screw hole 28 for fixing the coupling seat 23. As shown in Fig. 4, it is a combination of the first embodiment of the present invention. Block 23. The joint 23 includes a body 29, and the body 29 is provided with a plurality of slots 30 in cooperation with respect to the fixing pin 27 and the screw hole 28 (see Fig. 3). The front end of the body 29 is convex, and the front end surface is provided with a rack 24. The side end faces of the body 29 are connected to have a resilient pre-arm 31. The pre-arm 31 extends horizontally outwardly for a distance, and the front end forms a contact end 32. The contact end 32 is formed into a curved surface, and the arc surface may be a cylindrical arc surface or a spherical arc surface. In this embodiment, a cylindrical arc surface is taken as an example. The manner in which the pre-arm 31 is coupled to the body 29 can be formed by the body extension of the coupling seat 23. Referring to FIG. 3 again, the plurality of slots 30 of the joint 23 are fitted to the fixing pins 27 and the screw holes 28 of the fixing surface 26, and the screw holes 28 are locked by a screw 33 to fix the coupling seat 23 to the fixing surface. 26 is connected to the read head 22. The coupling seat 23 passes through the hollow distance between the two sliding sleeves 25, and the guiding rod 21 exposed between the two sliding sleeves 25 is crossed in a manner not in contact with the guiding rod 21, so that the rack 24 of the front end surface of the coupling seat 23 is more than two sliding sleeves. Further, the pre-arm 31 of the end face of the joint 23 is located just above the guide rod 21 exposed between the two sliding sleeves 25, and the contact end 32 is pressed against the guide rod 21. 8 200941467 As shown in Fig. 5, the line B-B in Fig. 3 is along the side of the guide rod 21, and the gentleman is placed on the field. When the pre-force arm 31 is elasticized and the contact end 32 is pressed against the guide pin to pre-stress the guide rod 21, the pre-force arm 31 will push the guide rod against: the sleeve 25 of the head 22, and the sliding sleeve 25 forms a contact, eliminating the two-way read clearance. In the sliding of the reading head 22, the direction of the applied force changes. The vibration generated by the rapid movement between the two can be resisted or offset by the pre-forced arm 31 applied. Once the clearance is eliminated, the guide rod 21 can be stably supported, and 22 is slid. In addition, the pre-force arm 31 has a cylindrical contact contact \ 32 and a rod-shaped guide rod 21, when the curved directions of the two are perpendicular to each other; m will form a point contact area Therefore, the friction of the sliding of the reading head 22 is reduced, and the normal movement of the reading head 22 is sounded. Therefore, the optical disk drive of the first embodiment of the present invention can be installed by means of a combination. The pre-arm, with its cylindrical contact end, pre-forms a pre-pressure between the reading head and the guide rod, which not only reduces the contact with the guide boring machine, but also reduces the moving friction of the reading head and eliminates reading. The clearance between the head and the cymbal is avoided, the yaw vibration of the reading head is avoided, the precision of the optical drive 妒 10 is improved, and the difficulty of the control system of the optical disc drive is reduced. In addition, the pre-arm can also be combined in manufacturing. When the seat is integrally formed, the pre-force arm is directly formed on the joint seat, thereby reducing the cost of manufacturing the assembled pre-force arm component. As shown in Fig. 6, the first disc drive transmission device 40 according to the second embodiment of the present invention. The two guide rods 41 of the optical disc drive transmission unit 4, the reading head 42, and the combination The structural arrangement of the 43 and the rack 44 is basically the same as that of the optical disc drive of the first embodiment. The second embodiment of the optical disc drive 4 is different in that the pre-arm 45 is directly fixed to the read head 42. By reading 200941467 ❹
頭42靠近一端滑套46處水平懸空伸出至一導桿41上方， 利用預力臂45前端向下球藏面狀的接觸部47，施加預力 頂壓導桿41，形成點接觸，以降低讀取頭42滑動磨擦， 並消除讀取頭42與導桿41間的滑動餘隙。本實施例^力 臂45固定在讀取頭42的方式，亦可由讀取頭42端邊直接 -體延仰形成’以減少製造組裳預力臂零件之成本。因此， 本實施例之光碟機傳較置4Q同樣可達到本發 隙避免讀取頭偏擺振動的目的及功效。 儆 以上所述者，僅用以方便說明本發明之較佳 本發明之範圍不限於該等較佳實施例， 只施例， 任何變更，於我離本發明之精神下，1發明所做的 利之範圍。 &屬本發明申請專 【圖式簡單說明】 圖1 圖2 圖3 圖4 圖5 為習知光碟機傳動裝置之立體圖。 為圖1中線A-A之側剖面圖。 置之立體圖 為本發明第一實施例光碟機傳動骏 為本發明結合座之立體圖。 為圖3中線B-B之側剖面圖。 圖6為本發明第二實施例光碟機傳動裝置 — 體圖。 200941467 【主要元件符號說明】 20第一實施例光碟機傳動裝置 21導桿 22讀取頭 23結合座 24齒條 25滑套 26固定面 Ο 27固定銷 28螺孔 29本體 30槽孔 31預力臂 32接觸端 33螺絲 40第二實施例光碟機傳動裝置 ❿ 41導桿 42讀取頭 43結合座 44齒條 45預力臂 46滑套 47接觸部 11The head 42 is horizontally suspended near the one end sliding sleeve 46 and protrudes above a guiding rod 41. The front end of the pre-arm 45 is used to apply a pre-stressing pressing guide 41 to form a point contact. The sliding friction of the reading head 42 is lowered, and the sliding clearance between the reading head 42 and the guide rod 41 is eliminated. In this embodiment, the force arm 45 is fixed to the reading head 42 or directly formed by the end of the reading head 42 to reduce the cost of manufacturing the pre-arm component. Therefore, the optical disc drive of the embodiment can achieve the purpose and effect of avoiding the yaw vibration of the read head by the same 4Q. The above description of the present invention is not limited to the preferred embodiments, but only the examples, any changes, and the invention according to the spirit of the present invention. The scope of benefits. &Application of the Invention [Simplified illustration of the drawings] Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 is a perspective view of a conventional optical disc drive. It is a side cross-sectional view of line A-A in Fig. 1. The perspective view of the optical disc drive of the first embodiment of the present invention is a perspective view of the joint of the present invention. It is a side cross-sectional view of line B-B in Fig. 3. Figure 6 is a perspective view of a drive mechanism of an optical disk drive according to a second embodiment of the present invention. 200941467 [Description of main component symbols] 20 first embodiment optical disk drive transmission 21 guide 22 reading head 23 coupling seat 24 rack 25 sliding sleeve 26 fixing surface 固定 27 fixing pin 28 screw hole 29 body 30 slot 31 pre-force Arm 32 contact end 33 screw 40 second embodiment optical disk drive ❿ 41 guide 42 read head 43 joint seat 44 rack 45 pre-force arm 46 slide sleeve 47 contact portion 11