454 1 8 1 a? B7 五、發明說明（1 ) 〔發明所屬之技術領域〕 本發明，係關於適合使用光碟等的光碟裝置之光讀取 頭，特別係有關光讀取頭的透鏡致動器之固定部構造。 〔習知技藝〕 通常，光讀取頭，係由金屬製的架，和安裝在架之， 具有物鏡的透鏡致動器，及把雷射光向物鏡射出，並將從 物鏡之回復光射入的射接光部所構成。j 上述透鏡致動器，係由固定部的基座，和在基座經由 4條鋼絲被保持成自由可動的，具有物鏡之透鏡座，及將 透鏡座向所定方向驅動的電磁驅動機構所構成。 ^ 上述射接光部，備有發生.雷射光之發光元件，和接受 雷射光的回光之接光元件，及由控制此等發光元件及接光 元件的電路而成之光積體元件。 然後，將該光讀取頭安裝在光碟裝置，使之對向光碟 面往復動，並且在基座和透鏡座將細長的4枝鋼線之端部 ，分別以接著劑連結，由在軛，磁鐵及線圈所成的電磁驅 動機構產生之磁，使透鏡座向焦點方向（使物鏡對光碟接 離的方向），追踪方向（光碟之徑方向）移動。然後，成 爲透過物鏡的雷射光將在光碟之碟面結成焦點，在該光碟 面上記錄資訊，或從光碟面上使資訊再生。 在第5圖及第6圖，顯示習知的光讀取頭之透鏡致動 器的固定部之一例。該固定部5 0，具有成3字狀的硬樹 脂製之外殼5 1，該外殼5 1係由基座部5 1 a，和突設 ---------------裝--- (請先閱讀背面之注意事項D寫本頁)454 1 8 1 a? B7 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to an optical pickup head suitable for an optical disk device such as an optical disk, and particularly relates to the lens actuation of the optical pickup head. Structure of the fixed part of the device. [Know-how] Generally, the optical pickup head is made of a metal frame and a lens actuator mounted on the frame, which has an objective lens, and emits laser light toward the objective lens, and emits the recovered light from the objective lens into It consists of a light-emitting unit. j The above-mentioned lens actuator is composed of a base of a fixed portion, a lens holder having an objective lens, and an electromagnetic drive mechanism for driving the lens holder in a predetermined direction, the lens holder being held in a freely movable manner through four wires. . ^ The above-mentioned light-emitting unit includes a light-emitting element that generates laser light, a light-receiving element that receives the returned light of the laser light, and a light-integrated element formed by controlling the circuit of these light-emitting elements and light-receiving elements. Then, the optical pickup is mounted on the optical disc device, and it reciprocates to the surface of the optical disc, and the ends of the four elongated steel wires are connected to the base and the lens holder with an adhesive, respectively. The magnetic generated by the electromagnetic drive mechanism formed by the magnet and the coil moves the lens holder toward the focus direction (the direction in which the objective lens is separated from the optical disc) and the tracking direction (the diameter direction of the optical disc). Then, the laser light that has passed through the objective lens will focus on the disc surface, record information on the disc surface, or reproduce information from the disc surface. Figs. 5 and 6 show examples of fixing portions of a lens actuator of a conventional optical pickup head. The fixing part 50 has a shell 5 1 made of a hard resin in a shape of 3, and the shell 51 is formed by a base part 5 1 a, and is provided -------------- -Install --- (Please read the precautions on the back first to write this page)
Me -丨線· 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -4 - 4t>4l8l 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明（2 ) 在該基座部5 1 a的兩端之臂部5 1 b而成。 並且’固定部5 0 ’備有同樣地成3字狀的樹脂製之 平板部5 5，.外殻5 1的臂部5 l b重疊在平板部5 5之 則端部被安裝固定’結果，在中央有向上下貫通之開口部 5 3。 更且’在外殼5 1，形成有從兩臂部5 1 b的前面至 後面貫通之四方形的空間部5 6。 板片6 0 ’係由塑膠等樹脂而成的有彈性之薄的一張 平板’在該板片6 0有小孔在上下各2個合計形成有4個 〇 然後’板片6 0，係和外殻5 1的基座部5 1 a之後 面設有一定的間隔被配，置，成爲在板片6 0及基座部5 1 a之上緣部塗體接著劑1 〇 〇，而被互相安裝固定。 然後’在外殼5 1的空洞部5 6內，及基座部5 1 a 和板片6 0之空隙部份，充塡有膠狀之衰減劑9 0。 線6 5 ’係由約數十；z m的極細之金屬線材而成，成 爲能將一端安裝在固定部5 0，而將f也端安裝在未圖示的 能夠可動之透鏡座。亦即，成爲將4條線6 5的一端插通 在板片6 0之各孔，以焊錫或接著劑安裝固定，把線6 5 的他端在2個空洞部5 6內各插通2條，安裝固定在透鏡 座。 再者’軟性基板（FPC) 62，係由多數條成帶狀 的電路圖型（未圖示），和將電路圖型從兩面挾住之絕緣 片而成，具有貫通電路圖型及絕緣片的4個孔，貼在上述 本纸張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -5- ------------•裝 ------訂·！ !1·線 (請先閱讀背面之注意事項寫本頁) 4 54 1 8 A7 B7 五、發明說明（3 ) 板片，在4個孔和上述板片6 〇之孔一起，將線6 5穿通 而被固定。. (請先閱讀背面之注意事項寫本頁) 要將如此地被構成的致動器之外殼5 1裝配時，首先 把板片6 0和軟性基板6 2重疊，將線6 5的一端穿通板 片6 0及軟性基板6 2之各孔，把線6 5在板片6 0及軟 性基板6 2，以焊錫或接著劑安裝固定。 將外殼5 1載置在未圖示的輸送架，安裝固定後，在 外殼5 1之基座部5 1 a後面，把上述安裝線6 5的一端 之板片6 0，以設置一定的空隙之狀態配置。此時，在外 殼5 1的空洞部5 6內，已經穿通有自由端的各線6 5之 他端。把此等4條線6 5的他端，安裝固定在未圖示之透 鏡座’將外殼5 1和透鏡座的位置定位調整後，在外殻 5 1及板片6 0之上緣部塗佈接著劑1 〇 〇，使外殻5 1 和板片6 0以產生一定的空隙之狀態固定。 接著’在外殼5 1的空洞部5 6內，及基座部5 1 a 和板片6 0之空隙，把衰減劑9 0充塡。 經濟部智慧財產局員工消費合作社印製 在和外殼5 1 —體化的平板部5 5，載置由未圖示之 芯部和磁鐵而成之電磁驅動機構而被固定，以該電磁驅動 機構爲中心，在和外殻5 1相反側，把上述透鏡座安裝固 定成能夠移動。 如此地構成，被裝配的備有透鏡致動器之光讀取頭， 將使從射接光部射出的雷射光，以物鏡使之反射在光碟， 把透鏡座由芯部和磁鐵的磁使之向焦點方向，追踪方向移 動，把焦點形成在光碟面地，被驅動控制。 -6 - 本紙張尺度適用中國國家標準（CNS〉A4規格（210 X 297公釐） 454 1 8 1 1 A7 B7 五、發明說明（4 ) 此時，由於在外殻5 1內，及外殼5 1和板片6 0的 空隙充塡衰減劑9 0，將能減低透鏡座之pitching (光碟的 焦點軸四周之旋轉諧振）或偏轉（光碟的追踪軸四周之旋 轉諧振）等的不需要之振動，並且對和追踪方向及焦點方 向正交的方向（正切方向）之直振動模的不需要之諧振振 動。 〔發明所要解決之課題〕 > 可是，要將線6 5固定在平板6 0時，因平板6 0係 和外殼5 1爲獨立構件。將外殼5 1的基座部5 1 a和平 板6 0，以接著劑1 0 0固定時，因平板6 0係由具有彈 性的薄平板而成，故會彎曲，難以將線6 5正確地定位而 安裝。 並且，平板6 0係和外殼5 1爲獨立構件，故零件數 會增加，在裝配時需要正確地定位，而且，將需要爲此之 裝配2數，故將增加成本。 更且，在把平板6 0安裝在外殼5 1的基座部5 1 a 時，當外力加在正切方向（線6 5之軸方向）時，薄的板 片6 0將需要以上地變形，而有不會回到未加外力的原來 形狀之慮。因此，當平板6 0變形時，具有被安裝在線 6 5的一端而固定之透鏡座，會從所定的位置偏移’被保 持在透鏡座之物鏡的位置也偏位。通過物鏡之雷射光有不 能正確地射在光碟的碟面之虞。 ~ 而且，因係將線6 5，成4條一體地固定在1張平板 本紙張尺度適用中國國家標準（CNS)A4規格(210 X 297公釐） -7 - 請先閱讀背面之注意事項ο寫本頁) 裝 秦· 經濟部智慧財產局員工消費合作社印製 454181 A7 B7 五、發明說明（5 ) 6 0，故需使平板6 0成爲和外殼5 1的平板部5 1 a之 後面略相同大小，將容易受到溫度·濕度的影響而引起變 形。因此，具有發生線6 5的偏.位，產生如上述物鏡的偏 位之虞。 本發明之目的，係鑑於以上之問題點而進行者，將使 光讀取頭的固定部，成爲能夠精確度良好地裝配之構造， 並且提供防止不需要的諧振，頻率特性良好之構造/ ;v 〔爲了解決課題之方法〕 做爲至少解決上述課題的1個之第1解決方法，具備 固定部，和在該固定部經由多數的線被配置成能夠移動之 可動部，在固定部形成充塡衰減劑用的凹進之衰減劑充塡 部，並且在該衰減劑充塡部內將彈性片一體地形成，把線 的一端固定，且將衰減劑充塡在衰減劑充塡部內，將彈性 片埋設者。 並且，做爲第2解決方法，彈性片係形成將前端缺口 的引導部，在該引導部之最深處，形成有將線保持•固定 用之溝部。 更且，做爲第3解決方法，在側壁部，立設有彈性片 和與線的軸方向對向配置之壁部者。 〔發明之實施形態〕 以下，參照’附圖說明本發明的光讀取頭之實施形態。 如第1圖至第4圖所不，構成光讀取頭的一部份之透 請' 先 閱 讀_ 背 之 注 意 頁 訂 經濟部智慧財產局員工消費合作社印*1取 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） -8- 541 8 1 A7 ____B7_ 五、發明說明（6 ) 鏡致動器10，具備有固定部之基座1 1 ，該基座1 1 ， 係由略成矩形狀的樹脂製所成，由對向之一對側壁部1 1 a，和連接該側壁部1 1 a的前壁部Γ 1 b (圖中，前側 )及後壁部1 1 c (圖中底側），及頂板部1 1 d和底板 部1 1 e所構成，並且和頂板部1 1 d平行地形成從底板 部1 1 e張行之張出部1 1 f，把前壁部1 1 b的中央部 份切口，在其餘之部份形成前面部1 1 g。 在各側壁部1 1 a，形成有衰減劑充塡部的成凹狀之 凹部2 0，在該凹部2 0內，形成有平坦狀之底部2 1。 在各底部2 1，有成薄片狀的彈性片2 2 ,成上下各 排列2個向外方被突出形成。此等彈性片2 2，係和底部 2 1被一體成形，當外力（振動）作用時，具有抗拒外力 (振動）要回復原來狀態之彈性。 更且，係壁部，而成略原的板狀之第1制動器2 3， 和成盒狀的第2制動器2 4排成前後，同樣地從各底部 2 1向外方突出形成，以各彈性片2 2爲中心，在其兩側 隔著一定的距離，有第1及第2制動器2 3、2 4分別對 向配置。 然後，第1制動器2 3，將成爲彈性片2 2向前方側 彈性變形時的制動器，第2制動器2 4 ’有彈性片2 2向 後方側彈性變形時之制動器的功能’成爲防止需要以上之 變形.。 在上述彈性片2 2，分別形成有將前端切口成V字狀 的引導部2 5，在引導部2 5內之最深部，分別形成有成 本紙張尺度適用中國國家標準(CNS)A4規格（210 X 297公釐） ---------------裝--- (請先閱讀背面之注意事項D寫本頁) 訂·' -•線· 經濟部智慧財產局員工消費合作社印製 -9- 454 1 8 1 A7 ____ B7 五、發明說明（7 ) 半圓狀的溝部2 5 a。然後，在把後述之線編入時，將以 引導部2 5做爲引導而被插入，成爲將被保持在溝部2 5 a .內。 - 在上述基座1 1的前面部1 1 g及後壁部1 1 c，有 向內側切口成V字狀之切溝2 6 a、2 6 b，在上下各排 2個分別被形成，更且，在前面部Γ1 g的切溝2 6 a內 之最深部份，形成有成半圓狀之第2溝部2 7。 …可動部的樹脂製之透鏡座1. 2，係由圓筒狀的透鏡保 持部1 2 a ，和與該透鏡保持部1 2 a之一部份被一體成 形的方形狀之軛保持部1 2 b所構成，而在透鏡保持部 12a，有物鏡13被保持。在和該軛保持部12b對向 的各側壁面，在上下排列2個形成有切口成V字狀之安裝 部1 4。 電磁驅動機構3 0，係由金屬磁性材而成的環狀之軛 3 1 a ，和沿著軛3 1 a的內壁被安裝固定之磁鐵（未圖 示），和對向磁鐵使之與軛3 la交叉地安裝固定的略圓 筒狀之聚焦線圈3 1 b，及未圖示的追踪線圈所構成，造 成1個磁路。 然後，軛3 1 a被安裝在透鏡座1 2之軛保持部1 2 b 。 然後，透鏡座1 2的軛保持部1 2 b之背面，和基座 1 1的前壁部1 1 b，在軛3 1 a和磁通互連之位置安裝 的聚焦線圈3 1 b在其間介在，在輸送架上隔著所定間隔 ，被對向配置。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） · 10 - ---------------裝--- (請先閱讀背面之注意事項ι〇寫本頁) -9 --線. 經濟部智慧財產局員工消費合作社印製 45418 1 1 A7 I------B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（8 ) 線3 5 ’係由數十#111程度的極細之金屬材而成，其 一方的端部3 5 a係卡合在透鏡座1 2之安裝部1 4，他 方的端部3 &b，係通過基座1 1的第2溝部2 7，卡合 在彈性片2 2的引導部2 5內之溝部2 5 a。 然後，透鏡座1 2，係由此等4條的線3 5，被支持 成自.由移動。 如第3圖所示，在安裝部1 4及引導部25，被卡合 有各線3 5 ’在安裝部1 4以紫外線硬化型的接著劑 1 0 0堅固地固定，而在引導部2 5也同樣地以外線硬化 型之接著劑100堅固地固定。 如此地，各線3 5係將基座1 1和透鏡座1 2，以所 定之間隔分別跨架。 更且，如第3圖及第4圖所示，在凹部2 0內塗佈· 充塡有衰減劑9 0。該衰減劑9 0，係由粘性高的矽系膠 狀之衰減材而成，具有衰減作用。 接著，說明將線3 5的一端安裝在基座1 1之方法。 在第1圖及第2圖，使用模具等以將基座1 1及透鏡 座1 2保持在所定位置之狀態，把4條的線3 5，分別卡 合在透鏡座1 2之安裝部1 4和彈性片2 2的引導部2 5 內之溝部2 5 a。此時，各線3 5，將以引導部2 5及成 V字狀的安裝部14做爲引導被插入，而張架在安裝部 1 4和溝部2 5 a間。 接著，以將各線3 5和基座1 1及透鏡座1 2保持在 所定位置的狀態’在各溝部2 5 a內塗佈紫外線硬化型之 請先閱讀背面之注意事項寫本頁) 裝 -SJ· - --線. 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） · 11 - 4 &4 | 8 A7 B7 五、發明說明（9 ) 接著劑1 0 0 ’將紫外線照射而堅固地固定。此時，因彈 性片2 2係和基座1 1被一體成形，故能簡單地把線3 5 精確度良好地定位。更且，把線3 5的端部3 5 b，同樣 地塗佈紫外線硬化型之接著劑1 〇 〇，照射紫外線而堅固 地固定在透鏡座1 2之安裝部1 4。在固定後，如覆蓋凹 部2 0全體地充塡衰減劑9 0。如此地，將衰減劑9 0 , 充塡在彈性片2 2和第1及第2制動器2 3、2 4之間。 在如此構成的光讀取頭，將由接通電磁驅動機構3 0 之聚焦線圈3 1 b的電，使透鏡座1 2向物鏡1 3之聚焦 方向驅動，而由通至追踪線圈的電，使透鏡座1 2向物鏡 1 3之追踪方向驅動。 在保持物鏡1 3的透鏡座1 2之可動中產生不需要的 諧振時，該諧振將經由和線3 5之一端卡合的溝部2 5 a ，傳動至彈性片2 2。 因線3 5係被固定在溝部2 5 a ，和彈性片2 2及第 1、第2制動器23、 24—起，以衰減劑90被覆蓋， 故彈性片2 2將由其彈性，雖會向第4圖所示之切線方向 (線3 5的軸方向）稍變形移動，可是彈性片2 2將立即 產生衰減作用。亦即，將由彈性片2 2本身的彈性，及充 塡在彈性片2 2和第1、第2制動器2 3、2 4間的衰減 劑9 0之粘性，使線3 5的移動更容易制動，而產生強之 衰減作用。 據此，能夠減低偏轉和凹痕，特別係在切線方向（在 4條線3 5的直振動模）之高頻率域的不必要之諧振。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -12 - --------------裝—— 請先閱讀背面之注意事項一〇寫本頁) Μά 經濟部智慧財產局員工消費合作社印製 性 片 片 經濟部智慧財產局員工消費合作社印製 454 1 8 1 1 A7 ______ B7 五、發明說明（1〇 ) 因此’由於線3 5係被固定在引導部2 5的溝部2 5 a內’和彈性片2 2及第1、第2制動器2 3、2 4 —起 以衰減劑9 0被覆蓋，埋設，線3 5將由彈性片2 2之彈 性’能夠向切線方向移動，由充塡在彈性片和第1、第2 制動器2 3、2 4間的衰減劑9 0之粘力，能使線3 5的 移動更容易制動。並且’因在凹部2 0全體充塡有衰減劑 9 〇，使在線3 5之不必要的諧振振動衰減，提高頻率特 故能使焦點伺服和追踪伺服安定化、。 更且，由於第1及第2制動器2 3、2 4，係在彈性 2近傍被設在將成爲線3 5的軸方向之位置，當彈性 2由外力而變形時，能夠和彈性片2 2擋接，而防止 需要以上之變形。 並且，因彈性片2 2係和基座1 1 一體成形，故將提 高線3 5的定位精確度’而無引起物鏡1 4的偏位之虞。 即使在高溫·多濕的環境下，也能夠使彈性片2 2成 爲小形’因其變形也小，故能提高物鏡1 4的定位精確度 而且’因在基座1 1的側壁部1 1 a內，配置有引導 部2 5之溝部2 5 a ，和在基座1 lp後壁部1 1 c不同 ，不需要把線3 5需要以上地變長。 〔發明之效果〕 如以上所述’本發明之光讀取頭，係在固定部形成爲 了充塡衰減劑用的衰減劑充塡部之凹處，並且在該衰減劑 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -13- 請. 先 閱 讀, 背 面 之 注 意 事 項 i 4 S4 18 1 A7 __ B7 五、發明說明（11 ) 充塡部內將彈性片一體地形成，把線的一端固定，並且由 於在衰減劑充塡部內把衰減劑充塡而埋設彈性片，因彈性 片係一體地形成在固定部之衰減劑充塡部內，故不需要彈 性片的定位調整’能使線和固定部之定位成爲精確度良好 ’而確實地固定。並且，因能減少零件數，故將減少裝配 工數，能夠設法減低成本。 而且’由於彈性片，係形成將前端切口的引導部，在 該引導部之最深部，形成有爲了將線保持.固定用的溝部 ’能使線和溝部之定位精確度良好，而確實地固定。並且 ’線將被堅固地固定在溝部，對線的不需要之諧振振動， 彈性片能確實地彈性變形。 並且’在側壁部，由於立設有在彈性片和線的軸方向 對向配置之壁部’線將對應於可動部的動作而移動，即使 彈性片彎曲，也能防止壁部需要以上地變形。而且，和彈 性片的彈性力’同時由被配在彈性片和壁部間的衰減劑之 衰減作用，能夠更確實地防止不需要之諧振。 〔圖面之簡單說明〕 〔第1圖〕係顯示本發明的實施If乡態之光讀取頭的透 鏡致動器（未圖示衰減劑）之钭視圖。 〔第2圖〕係在第1圖的透鏡致動器（未圖示衰減劑 )之主要部份擴大斜視圖。 〔第3圖〕概在第1圖的透鏡致動器之主要部份'擴大 斷面圖。. 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） -- - - ----I ----'·裝 i I (請先閱讀背面之注意事項I 寫本頁) •SJ· -線· 經濟部智慧財產局員工消費合作社印製 -14- 454 18 1 A7 ^__B7 五、發明說明（12 ) 〔第4圖〕係在第1圖的透鏡致動器之主要部份擴大 斷面圖。 〔第5圖〕係已往的光讀取頭之#透鏡致動器的主要部 份斜視圖。 〔第6圖〕係從第5圖的6 — 6線觀察之直斷面圖。 〔圖號說明〕 經濟部智慧財產局員工消費合作社印製 1 1 固 定 部 ( 基 座 .) 1 1 a 側 壁 部 1 2 可 動 部 ( 透 鏡 座 ) 2 0 凹 部 2 2 彈 性 片 2 3 壁 部 ( 第 1 制 動 器） 2 4 壁 部 ( 第 2 制 動 器） 2 5 引 導 部 2 5 a .溝 部 3 5 線 9 0 衰 減 劑 -15- 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Me-丨 line · Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is printed in accordance with the Chinese National Standard (CNS) A4 (210 X 297 mm) -4-4t > 4l8l A7 B7 5. Description of the invention (2) The arm portions 5 1 b are formed at both ends of the base portion 5 1 a. In addition, the 'fixing portion 5 0' has a flat plate portion 5 5 made of resin, which is also formed in a three-letter shape. The arm portion 5 lb of the housing 5 1 overlaps the flat portion 55 and the end portion is fixed. ' In the center, there are openings 5 3 which penetrate upwards and downwards. Furthermore, a rectangular space portion 56 is formed in the housing 51 from the front to the back of the two arm portions 5 1b. Sheet 6 0 'is a thin sheet of elasticity made of resin such as plastic'. There are small holes in the sheet 60. There are 4 altogether 2 on the top and bottom. Then the sheet 6 0, It is arranged at a certain distance from the rear surface of the base portion 5 1 a of the housing 51, and is set to be a body coating adhesive 100 on the edge of the plate 60 and the base portion 5 1 a. They are fixed to each other. Then, in the cavity portion 56 of the casing 51, and the gap portion between the base portion 5a and the plate 60, a gelatinous attenuator 90 is filled. The wire 6 5 ′ is made of an extremely thin metal wire of about several tens; z m so that one end can be mounted on the fixed portion 50 and the f end can also be mounted on a movable lens holder (not shown). That is, one end of the four wires 65 is inserted into each hole of the plate 60, and is fixed with solder or an adhesive, and the other ends of the wires 6 5 are inserted into the two hollow portions 5 6 respectively. Strip, mounted and fixed on the lens holder. Furthermore, the 'flexible substrate (FPC) 62' is composed of a plurality of strip-shaped circuit patterns (not shown) and an insulating sheet that holds the circuit pattern from both sides, and has four penetrating circuit patterns and insulating sheets. Holes affixed to the above-mentioned paper sizes are applicable to the Chinese National Standard (CNS) A4 specifications (210 X 297 mm) -5 ------------- Installation ------ Order · !! ! 1 · Line (please read the precautions on the back to write this page) 4 54 1 8 A7 B7 V. Description of the invention (3) Plate, with the 4 holes and the holes of the above plate 6 〇, wire 6 5 Perforated and fixed. (Please read the note on the back first to write this page.) To assemble the housing 5 1 of the actuator thus constructed, firstly overlap the plate 60 and the flexible substrate 62, and pass one end of the wire 65. Each of the holes in the plate 60 and the flexible substrate 62 is provided with wires 65 in the plate 60 and the flexible substrate 62, and is fixed by soldering or an adhesive. Place the housing 51 on a conveyor (not shown), and fix it. After the base portion 5 1 a of the housing 51 is placed, the plate 60 at one end of the above-mentioned installation wire 65 is provided with a certain gap. State configuration. At this time, in the hollow portion 56 of the case 51, the other ends of the wires 65 having the free ends have been passed through. Mount the other ends of these four wires 65 to the lens holder (not shown). After adjusting the position and positioning of the housing 51 and the lens holder, apply the coating to the upper edges of the housing 51 and the plate 60. The adhesive agent 100 fixes the case 5 1 and the plate 60 in a state where a certain gap is created. Next, 'the attenuating agent 90 is filled in the hollow portion 56 of the housing 51, and the gap between the base portion 5a and the plate 60. The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is printed on the housing 5 1 —a flat plate part 5 5, and an electromagnetic drive mechanism made of a core and a magnet (not shown) is mounted on and fixed by the electromagnetic drive mechanism. As the center, the lens holder is fixed on the side opposite to the housing 51 so as to be movable. In this configuration, the optical pickup head equipped with a lens actuator is configured to reflect the laser light emitted from the light-receiving portion onto the optical disc with an objective lens, and the lens holder is magnetically driven by the core portion and the magnet. It moves to the focus direction and the tracking direction to form the focus on the disc surface and is driven and controlled. -6-This paper size applies to Chinese national standards (CNS> A4 size (210 X 297 mm) 454 1 8 1 1 A7 B7 V. Description of the invention (4) At this time, because it is inside the outer shell 5 1 and the outer shell 5 1 Filling the gap with the plate 60 with an attenuator 90 will reduce unwanted vibrations such as pitching (rotational resonance around the focal axis of the disc) or deflection (rotational resonance around the tracking axis of the disc) of the lens holder And unwanted resonance vibration of a straight vibration mode in a direction (tangential direction) orthogonal to the tracking direction and the focus direction. [Problems to be Solved by the Invention] > However, when the line 65 is fixed to the flat plate 60, The flat plate 60 and the housing 51 are independent members. When the base portion 5 1 a and the flat plate 60 of the housing 51 are fixed with the adhesive 100, the flat plate 60 is made of a thin elastic plate. It will bend, and it is difficult to correctly position and install the wire 65. Moreover, the flat plate 60 series and the housing 51 are independent components, so the number of parts will increase, and it needs to be correctly positioned during assembly, and it will need to be The number of assembling is two, so it will increase the cost. When the plate 60 is mounted on the base portion 5 1 a of the housing 51, when an external force is applied in the tangential direction (the axis direction of the line 65), the thin plate piece 60 needs to be deformed as described above without returning. To the original shape without external force. Therefore, when the flat plate 60 is deformed, a lens holder fixed at one end of the wire 65 is shifted from a predetermined position and is held in the position of the objective lens of the lens holder. It is also misaligned. The laser light passing through the objective lens may not be able to strike the disc surface of the disc correctly. Also, because the wires 65 and 4 are fixed on a flat plate in one piece, the paper standards are applicable to Chinese national standards ( CNS) A4 specification (210 X 297 mm) -7-Please read the notes on the back ο write this page) Installed by Qin · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 454181 A7 B7 V. Description of Invention (5) 6 Therefore, it is necessary to make the flat plate 60 to be slightly the same size as the rear surface of the flat plate portion 5 1 a of the housing 51, and it is easy to be deformed by the influence of temperature and humidity. Therefore, there is a possibility that the misalignment of the line 65 may occur, and the misalignment of the objective lens may occur as described above. The purpose of the present invention is to carry out in view of the above problems, and will make the fixed portion of the optical pickup head a structure that can be assembled with good accuracy, and provide a structure that prevents unwanted resonance and has good frequency characteristics /; v [Method to solve the problem] As a first solution to solve at least one of the problems described above, a fixed portion is provided, and a movable portion is arranged in the fixed portion to be movable via a plurality of lines, and a charging portion is formed in the fixed portion. The recessed attenuator filling portion for the attenuating agent, and an elastic sheet is integrally formed in the attenuating agent filling portion, one end of the wire is fixed, and the attenuating agent is filled in the attenuator filling portion, so that the elasticity is elastic. Film buryer. In addition, as a second solution, the elastic sheet forms a guide portion with a notch at the front end, and a groove portion for holding and fixing the thread is formed at the deepest portion of the guide portion. Furthermore, as a third solution, an elastic piece and a wall portion arranged to face the axial direction of the wire are erected on the side wall portion. [Embodiments of the invention] Hereinafter, embodiments of the optical pickup head of the present invention will be described with reference to the drawings. As shown in Figures 1 to 4, the part that constitutes the optical pickup head should be read through first. _ Please read the note page on the back to order the stamp printed by the employee ’s consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs * 1 This paper size is applicable to China Standard (CNS) A4 specification (210 X 297 public love) -8- 541 8 1 A7 ____B7_ V. Description of the invention (6) The mirror actuator 10 is provided with a base 1 1 with a fixed portion, and the base 1 1, It is made of a slightly rectangular resin, and has a pair of side wall portions 1 1 a facing each other, and a front wall portion Γ 1 b (front side in the figure) and a rear wall portion 1 connecting the side wall portions 1 1 a. 1 c (bottom side in the figure), and the top plate portion 1 1 d and the bottom plate portion 1 1 e, and parallel to the top plate portion 1 1 d to form an opening portion 1 1 f extending from the bottom plate portion 1 1 e. The central portion of the wall portion 1 1 b is cut out, and the front portion 1 1 g is formed in the remaining portion. In each side wall portion 1 a, a recessed recessed portion 20 is formed in the attenuator filling portion, and a flat bottom portion 21 is formed in the recessed portion 20. At each bottom portion 21, there are thin elastic sheets 2 2 formed in a row and protruding outwardly. These elastic pieces 22 and 2 are integrally formed with the bottom portion 21, and when external force (vibration) acts, it has the elasticity to resist the external force (vibration) to return to the original state. In addition, the wall part is formed into a plate-like first stopper 2 3 and a box-shaped second stopper 2 4 in front and rear, similarly protruding from the bottom 21 to the outside, and forming The elastic piece 22 is the center, and the first and second brakes 2 3 and 2 4 are arranged opposite to each other at a certain distance on both sides thereof. Then, the first brake 2 3 becomes a brake when the elastic piece 22 is elastically deformed to the front side, and the second brake 2 4 'the function of the brake when the elastic piece 22 is elastically deformed to the rear side' becomes necessary to prevent the above. Deformation ... The elastic sheet 22 is formed with a guide portion 25 with a front end cut into a V shape, and a deepest portion within the guide portion 25 is formed with a paper sheet size applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) --------------- Packing --- (Please read the note on the back D to write this page) Order ·--line · Intellectual Property Bureau staff of the Ministry of Economic Affairs Printed by the consumer cooperative -9- 454 1 8 1 A7 ____ B7 V. Description of the invention (7) The semicircular groove 2 5 a. Then, when the thread described later is incorporated, it will be inserted with the guide part 25 as a guide, and it will be held in the groove part 25a. -On the front part 11g and rear wall part 1c of the base 11, there are cut grooves 2 6 a and 2 6 b which are notched inward in the V shape, and two are formed in each of the upper and lower rows. Furthermore, a second groove portion 27 formed in a semicircular shape is formed in the deepest part of the cut groove 26 a in the front portion Γ1 g. … The movable lens holder 1.2 made of resin is composed of a cylindrical lens holding portion 1 2 a and a rectangular yoke holding portion 1 integrally formed with a part of the lens holding portion 1 2 a 2b, and an objective lens 13 is held in the lens holding portion 12a. On each side wall surface facing the yoke holding portion 12b, two V-shaped notch-shaped mounting portions 14 are arranged on the upper and lower sides. The electromagnetic drive mechanism 30 is a ring-shaped yoke 3 1 a made of a metal magnetic material, and a magnet (not shown) mounted and fixed along the inner wall of the yoke 3 1 a. The yoke 3 la is formed by crossing and fixing a substantially cylindrical focusing coil 3 1 b and a tracking coil (not shown) to form a magnetic circuit. Then, the yoke 3 1 a is attached to the yoke holding portion 1 2 b of the lens holder 12. Then, the back surface of the yoke holding portion 1 2 b of the lens holder 12 and the front wall portion 1 1 b of the base 11 are interposed between the focusing coil 3 1 b at a position where the yoke 3 1 a and the magnetic flux are interconnected. Intermediately, the conveyors are arranged facing each other at a predetermined interval. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm) · 10---------------- Packing --- (Please read the precautions on the back first 〇 Write this page) -9-Line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 45418 1 1 A7 I ------ B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of Inventions (8) The wire 3 5 ′ is made of tens of # 111 extremely thin metal material, and one end portion 3 5 a is engaged with the mounting portion 14 of the lens holder 12 and the other end portion 3 & b, The groove portion 2 5 a in the guide portion 25 of the elastic sheet 22 is engaged with the second groove portion 27 of the base 11. Then, the lens holder 12 and the four lines 3 5 are supported to move freely. As shown in FIG. 3, the respective wires 3 5 ′ are engaged with the mounting portion 14 and the guide portion 25. The mounting portion 14 is firmly fixed with a UV-curable adhesive 1 0 0, and the guide portion 2 5 Similarly, the outer-curing type adhesive 100 is firmly fixed. In this way, each of the wires 35 and 5 respectively straddles the base 11 and the lens holder 12 at predetermined intervals. Furthermore, as shown in FIG. 3 and FIG. 4, the attenuating agent 90 is applied and filled in the recessed portion 20. The attenuating agent 90 is made of a highly viscous silicon-based attenuating material and has an attenuating effect. Next, a method of attaching one end of the wire 35 to the base 11 will be described. In FIGS. 1 and 2, a mold or the like is used to hold the base 11 and the lens holder 12 at a predetermined position, and the four wires 35 are engaged with the mounting portions 1 of the lens holder 12 respectively. 4 and the groove portion 2 5 a inside the guide portion 2 5 of the elastic sheet 2 2. At this time, each of the wires 35 is inserted with the guide portion 25 and the V-shaped mounting portion 14 as a guide, and is stretched between the mounting portion 14 and the groove portion 25a. Next, in a state where the wires 3 5 and the base 11 and the lens holder 12 are held at predetermined positions, 'the ultraviolet curing type is coated in each groove portion 2 5 a. Please read the precautions on the back first and write this page.) SJ ·---- line. This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) It is irradiated with ultraviolet rays and fixed firmly. At this time, since the elastic sheet 22 and the base 11 are integrally formed, the wire 3 5 can be easily positioned with good accuracy. Furthermore, the end portion 3 5 b of the wire 35 was similarly coated with an ultraviolet-curable adhesive 100, and was irradiated with ultraviolet rays to be firmly fixed to the mounting portion 14 of the lens holder 12. After the fixing, the entire recessed portion 20 is filled with the attenuating agent 90. In this way, the damping agent 90 is charged between the elastic sheet 22 and the first and second brakes 2 3 and 2 4. In the optical pickup head thus constituted, the electricity of the focusing coil 3 1 b of the electromagnetic drive mechanism 30 is turned on to drive the lens holder 12 in the focusing direction of the objective lens 13 and the electricity of the tracking coil is used to cause The lens holder 12 is driven in the tracking direction of the objective lens 13. When an unnecessary resonance is generated during the movement of the lens holder 12 holding the objective lens 13, the resonance will be transmitted to the elastic sheet 22 through the groove portion 2 5a engaged with one end of the wire 35. Since the line 3 5 is fixed to the groove portion 2 5 a, and the elastic piece 22 and the first and second brakes 23 and 24 are covered with the damping agent 90, the elastic piece 2 2 will be elastic by its elasticity, although The tangential direction (the axial direction of the line 35) shown in Fig. 4 is slightly deformed and moved, but the elastic sheet 22 will immediately have a damping effect. That is, the elasticity of the elastic sheet 22 itself and the viscosity of the damping agent 90 filled between the elastic sheet 22 and the first and second brakes 2 3 and 24 make the movement of the wire 35 easier to brake. And produce a strong attenuation effect. According to this, it is possible to reduce deflection and dents, particularly unnecessary resonances in the high-frequency region in the tangential direction (in the straight vibration mode of 4 lines 35). This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) -12--------------- Loading-Please read the notes on the back first. Page) Μά Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the Consumers’ Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by 454 1 8 1 1 A7 ______ B7 V. Description of the invention (1〇) Therefore 'Because line 3 5 is It is fixed in the groove part 2 5 a of the guide part 25 and the elastic sheet 2 2 and the first and second brakes 2 3 and 2 4 are covered with the damping agent 90 and buried, and the line 3 5 will be covered by the elastic sheet 2 2 The elasticity can move in the tangential direction, and the viscosity of the damping agent 90 filled between the elastic sheet and the first and second brakes 2 3, 2 and 4 can make the movement of the line 3 5 easier to brake. In addition, since the entire recessed portion 20 is filled with an attenuator 9 0, unnecessary resonance vibration of the line 35 is attenuated, and the frequency servo is increased, so that the focus servo and the tracking servo can be stabilized. Furthermore, since the first and second brakes 2 3, 2 and 4 are located near the elastic 2 in the axial direction of the line 35, when the elastic 2 is deformed by an external force, it can interact with the elastic piece 2 2 Blocking while preventing the above deformation. In addition, since the elastic sheet 22 and the base 11 are integrally formed, the positioning accuracy of the line 35 is improved 'without causing the objective lens 14 to be misaligned. Even in a high temperature and humid environment, the elastic sheet 22 can be made small. Because its deformation is small, the positioning accuracy of the objective lens 14 can be improved, and because it is in the side wall part 1 1 a of the base 11 Inside, the groove portion 25 a provided with the guide portion 25 is different from the rear wall portion 1 1 c at the base 1 lp, and it is not necessary to increase the length of the wire 3 5 or more. [Effects of the Invention] As described above, the optical pickup head of the present invention is formed with a recess in the fixing portion for the attenuator filling portion for filling the attenuating agent, and the paper size of the attenuating agent is applicable to China. Standard (CNS) A4 specification (210 X 297 mm) -13- Please. Read first, notes on the back i 4 S4 18 1 A7 __ B7 V. Description of the invention (11) The elastic sheet is integrated in the filling part, One end of the wire is fixed, and the elastic sheet is buried because the attenuator is filled in the attenuator filling part. Since the elastic sheet is integrally formed in the attenuator filling part of the fixed part, there is no need for positioning adjustment of the elastic sheet. The positioning of the wire and the fixing portion can be performed with good accuracy and reliable fixing. In addition, since the number of parts can be reduced, the number of assembling workers can be reduced, and the cost can be reduced. In addition, "the elastic sheet forms a guide portion with a front end cutout, and a groove portion for holding the wire is formed at the deepest portion of the guide portion." The groove portion for fixing can be used to make the positioning accuracy of the wire and the groove portion good and securely fixed. . In addition, the wire will be firmly fixed in the groove portion, and the unnecessary resonance vibration of the wire will surely elastically deform the elastic piece. In addition, 'the wall portion is erected in the side wall portion which is arranged opposite to the axial direction of the elastic piece and the line', the line will move according to the movement of the movable portion, and even if the elastic piece is bent, the wall portion can be prevented from being deformed as described above. . In addition, the elastic force of the elastic sheet is simultaneously attenuated by the attenuating effect of the attenuator disposed between the elastic sheet and the wall portion, and unwanted resonance can be prevented more reliably. [Brief description of the drawing] [Figure 1] is a perspective view showing a lens actuator (attenuator not shown) of an optical pickup head of the If state in accordance with the present invention. [Fig. 2] An enlarged perspective view of the main part of the lens actuator (attenuator) shown in Fig. 1. [Fig. 3] An enlarged sectional view of the main part of the lens actuator shown in Fig. 1. . This paper size applies to China National Standard (CNS) A4 specification (210 X 297 public love)------- I ---- '· install i I (Please read the precautions on the back I write this page first ) • SJ · -line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -14- 454 18 1 A7 ^ __ B7 V. Description of the Invention (12) [Fig. 4] The main lens actuator shown in Fig. 1 Partially enlarged sectional view. [Fig. 5] A perspective view of a main part of a #lens actuator of a conventional optical pickup head. [Fig. 6] A straight sectional view taken from line 6-6 in Fig. 5. [Illustration of figure number] Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 1 1 Fixed part (base.) 1 1 a Side wall part 1 2 Movable part (lens holder) 2 0 Recessed part 2 2 Elastic sheet 2 3 Wall part ( 1 brake) 2 4 wall part (second brake) 2 5 guide part 2 5 a. Groove part 3 5 line 9 0 attenuator -15- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)