經濟部中央標準局貝工消費合作社印製 308685 A7 __B7_ 五、發明説明（1 ) 〔發明所靥之技術領域〕 本發明係關於至少具有對軟碟等的記錄媒體做記錄用 的磁頭或再生用的磁頭之一的裝置。詳細而言，係與防止 狹著記錄媒體而在設置在兩面的2個磁頭的衝擊，並使此 裝置薄型化有關。 〔先行技術〕 近年來對此種媒體記錄裝置或媒體再生裝置（以下討 論媒體再生裝置）不斷的要求更小型化、薄型化、輕置化 ，而且，具有媒體再生裝置的攜帶用電腦也由此而可被攜 帶到各種場所，因而會受到掉落 '撞擊等所產生的衝擊， 而必需要改善其耐衝擊特性。 在攜帶用電腦時，媒體再生裝置多半是在待機狀態， 設置在1片記錄媒體的兩面的2個磁頭（以下稱上磁頭及 下磁頭）互相是處在分離狀態。而且，其中間並不存在著 碟片等的記錄媒體，而爲空間，所以若在此狀態下受到掉 落等的衝擊，其上磁頭會因重力而向下振動，而以很大的 力量與下磁頭直接撞衝，而常會導致上磁頭及下磁頭的損 壊。 〔發明所欲解決之課題〕 此處，本發明爲解決上述課題而以下示者爲目的。 (1)即使攜帶用電腦受到掉落等的衝擊也能夠防止 上磁頭對下磁頭做直接撞擊。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ---------^---裝------訂------^旅 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 308685 hi _____B7_ 五、發明説明（2 ) (2 )使用槓桿而以槓桿比從極小的變化量得到大移 動量（stroke)，由此*隨著媒體再生裝置的薄型化即使 匣操作量受到限制也能夠充分確保磁頭的可移動量，而使 媒體再生裝置變薄。 (3)提供：即使操作置的精度變差也能夠藉由調整 機構來做高度上的微調節，而且能夠做匣支撐體自體保護 的媒體再生裝置。 〔用以解決課題之手段〕 本發明的再生裝置係： (1 ) 一種再生裝置，係從裝著於第1磁頭及第2磁 頭之間的記錄媒體，使用前述第1磁頭及前述第2磁頭之 中的至少一個來讀出記錄資訊的再生裝置，其特徵係具有 將前述第1磁頭保持爲能夠移動的第1架，及， 將前述第2磁頭保持爲能夠與前述第1磁頭一起移動 的第2架，及， · 在未裝著前述記錄媒體時，將前述第1架保持在相對 的離開前述第2架以使前述第1磁頭離開前述第2磁頭， 的架支撐器。 (2)如前述（1)，其中具有： 在裝著了前述記錄媒體時保持該記錄媒體的支撐體， 及’ 在未裝著前述記錄媒體時，將該記錄媒體的保護開閉 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ---.------裝------訂-------旅 (請先閲讀背面之注意事項再填寫本頁) 308685 A7 __B7_ 五、發明説明（3 ) 器打開的開閉器槓桿，以使前述第1或第2磁頭可從前述 記錄媒體讀出資訊； 該開閉器槓桿係能夠旋動的設在前述支撐體上； 在未裝著前述記錄媒體時，前將該槓桿的一部份配設 在前述架支撐器及前述支撐體之間以防止前述架支撐器的 移動。 (3) 如前述（1)，其中： 在未裝著前述記錄媒體時，前述架支撐器藉由使前述 第1架的一部份移動而使前述第1架與前述第2架保持距 離。 (4) 如前述（1)或（3)，其中： 前述架支撐器係能夠旋動的設置於前述支撐體上； 且具有調整該旋轉角的調整部材" (5) 如前述（2)，其中： 在未裝著前述記錄媒體時，設有防止前述支撐體的移 動的支撐體安全裝置（holder guard)。 (6) 如前述（5)，其中： 經濟部中央標準局貝工消費合作社印製 (請先閲讀背面之注意事項再填寫本頁) 前述支撐體安全裝置係彈性部材。 (7) 如前述（6)，其中： 前述支撐體安全裝置的一端爲固定’若插入前述記錄 媒體則一部份會押向插入方向，並具有接受前述支撐體的 缺口部。 (8) 如前述（7)，其中： 前述支撐體安全裝置，在未插入前述記錄媒體時’具 本紙張尺度適用中國國家標準（CNS ) A4规格（210X 297公釐） p -〇 - 經濟部中央樣準局員工消費合作社印製 A7 B7五、發明説明（4 ) 有接受前述支撐體的一部份之接受部。 (9)如前述（8)，其中： 前述支撐體安全裝置，在未插入前述記錄媒體時，具 有接受前述架支撐器的一部份的接受部。 再者，本發明的具有磁頭防衝裝置之資訊記錄再生裝 置係： (1)一種具有磁頭防衝裝置之資訊記錄再生裝置， 係備有： 分別支撐用以分別從上側及下側讀取磁碟的上、下磁 頭，且永遠爲互相牽引狀態的上、下架，及， 在收藏前述磁碟的匣插入時會向下方移動並固定，而 在脫離時會回到上方的匣支撐體； 在該匣支撐體上設有：以中間部被支撐爲能夠旋轉且 以前述部支撐上述匣的架支撐器，及，在前述匣插入前述 匣支撐體時會打開該匣的開閉器，而在離脫時則會關閉該 開閉器的開閉器槓桿；由此，若該匣插入該匣支撐體則該 匣支撐體會向下方移動並固定，同時，前述開閉器槓桿會 打開該匣的開閉器，並在該開關器開口部使前述上、下磁 頭從上、下與前述磁碟接觸，而且，若該匣從該匣支撐體 離脫則該匣支撐體會向上方移動並固定，同時，前述開閉 器槓桿會關閉該匣的開閉器，而使前述上、下兩磁頭互相 分開的資訊記錄再生裝置，其特徵係： 在該開閉器槓桿設置：與開閉前述匣的開閉器的開閉 器槓桿的開、閉運動連動，而可從上架支撐器的下方退避 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） L---.------ i------IT------- -成 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局貝工消費合作社印製 308685 A7 __B7_ 五、發明説明（5 ) 並進入上架支撐器下方的延長部。 (2) —種具有磁頭防衝裝置之資訊記錄再生裝置， 係備有= 分別支撐用以分別從上側及下側讀取磁碟的上、下磁 頭，且永遠爲互相牽引狀態的上、下架，及， 在收藏前述磁碟的匣插入時，會向下方移動並固定， 而在脫離時會回到上方的匣支撐體； 在該匣支撐體上設有：以中間部被支撐爲能夠旋轉且 以前端部支撐上述E的架支撐器，及，在前述匣插入前述 匣支撐體時會打開該匣的開閉器，而在離脫時則會關閉該 開閉器的開閉器槓桿；由此，若該匣插入該匣支撐體則該 匣支撐體會向下方移動並固定，同時，前述開閉器槓桿會 打開該匣的開閉器，並在該開閉器開口部使前述上、下磁 頭從上、下與前述磁碟接觸，而且，若該匣從該匣支撐體 離脫則該匣支撐體會向上方移動並固定，同時，前述開閉 器槓桿會關閉該匣的開閉器，而使前述上、下兩磁頭互相 的分開的資訊記錄再生裝置，其特徵係設有： 在前述碟匣（disk cartridge)插入到匣支撐體時會 受到該碟匣的推押而從該匣支撐體的下方退出，反之，在 該碟匣被拔出時，會再度進入該匣支撐體而在該匣支撐體 的非降下時會承接住該匣支撐體的下部，的支撐體安全裝 置。 (3) —種具有磁頭防衝裝置之資訊記錄再生裝置， 係備有： 本紙張尺度適用中國國家摞準（CNS ) A4規格（210X297公釐） ~ " ----.------j -裝------訂-----'---J旅 (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作杜印製 A7 ______B7_ 五、發明説明（6 ) 分別支撐用以分別從上側及下側讀取磁碟的上、下磁 頭，且永遠爲互相牽引狀態的上、下架，及， 在收藏前述磁碟的匣插入時會向下方移動並固定，而 在脫離時會回到上方的匣支撐體； 在該匣支撐體上匣設有：以中間部被支撐爲能夠旋轉 且以前端部支撐上述的架支撐體，及，在前述匣插入前述 匣支撐體時會打開該匣的鬨閉器，而在離脫時則會關閉該 開閉器的開閉器槓桿；由此，若該匣插入該匣支撐體則該 匣支撐體會向下方移動並固動，同時，前述開閉器槓桿會 打開該匣的開閉器，並在該開閉器開口部使前述上、下磁 頭從上、下與前述磁頭接觸，而且，若該匣從該匣支撐體 離脫則該匣支撐體會向上方移動並固定，同時，前述開閉 器槓桿會關閉該匣的開閉器，而使前述上、下兩磁頭互相 分開的資訊記錄再生裝置，其特徵係設有： 在前述碟匣插入到匣支撐體時會受到該碟匣的推押而 從前述上架支撐器的下方退出，反之，在該碟匣被拔出時 ，會再度進入前述上架支撐器的下方而在該匣支撐器的非 降下時會承接住前述上架支撐器的下部，的支撐體安全裝 〔作用〕 開閉器槓桿係使碟匣的開閉器開閉。設置於開閉器槓 桿的延長部在碟匣插入之前的待機狀態則有—部份係在上 架支撐器的下方β 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） I--^------ ------1T------7 成 (請先閲讀背面之注意事項再填寫本頁) -9 - 經濟部中央標準局員工消費合作社印製 A7 ___B7_ 五、發明説明（7 ) 若是插入碟匣而成爲插入狀態，則上架支撐體的延長 部會從上架支撐器下方出來。 再者，也設置了：在前述碟匣插入到匣支撐體時會受 到碟匣的推押而從前述上架支撐器的下方退出，反之，在 該碟匣被拔出時，會再度進入前述上架支撐器5 1的下方 而在匣支撐體的非降下時會承接住上架支撐器的下部，的 支撐體安全裝置》 藉由以上的裝置，在受到強力衝擊時，上架支撐器會 承受到保持著上磁頭的上架下沈力量，而且開閉器槓桿的 延長部會承接住此上架支撐器的下沈力量，因此，能夠限 制住上架支撐器的彎曲而能夠保護住磁頭。 而且，因爲此開閉器槓桿係裝設在匣支撐體上，所以 雖然最後匣支撐體會下沈，但是因爲支撐體安全裝置會承 接住此匣支撐體的下沈，所以也能夠限制住匣支撐體本身 的彎曲》 而且，藉由支撐體安全裝置也能夠直接承接住上架支 撐器的下沈，便能夠限制住上架支撐器本身的彎曲。 〔發明之實施形態〕 以下說明本發明之實施形態。以下，使用軟碟來做爲 記錄媒體，而且，使用對軟碟的兩面做磁性的讀寫（再生 、記錄）的上下2個磁頭來做使用。記錄媒體也可以是如 Z I P (74才 公司的商標）用碟片、硬碟（固定碟 片）用碟片、光碟、光磁碟等；本發明可適用於具有配置 本紙張尺度適用中國國家標準（CNS ) A4规格（210X297公釐） I---.-----^ <裝------訂-----7旅 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作杜印装 A7 __B7 五、發明説明（8 ) 於這些碟片的兩面的記錄、再生頭的裝置。 使用圓1〜圓4來說明以槓桿比來得到大移動童的形 式的媒體再生裝置。 圚1係裝設於支撐內藏了軟碟的碟匣9 (圖9)的匣 支撐體3的諸部材的分解斜視圖。圓2係裝設於接受匣支 撐體3的主框架（main frame) 6的諸部材的分解斜視圖 。圚3係裝設了上磁頭2 1及下磁頭2 2而構成的架的分 解斜視圖。 說明圇3。首先，說明接到軟碟的上面的上磁頭2 1 。上磁頭2 1係藉由接合到保持上磁頭2 1的上考4 1等 而一體的被支撐住。具有彈性且支撐住上架4 1的上吊器 (3113口6115丨111) 3 0 3則是經過墊片3 0 2而由螺絲 3 0 1鎖在架支撐器3 0 5上，上吊架3 0 3則由上架 4 1及力シy等而一體化。上磁頭2 1是位在上架4 1的 —端’而另一端側則接到架支撐器3 0 5的上面，在上下 移動上磁頭21時爲其支點。 其次，說明接到軟碟的下面的下磁頭2 2。下磁頭 2 2係藉由接合到保持下磁頭2 2的下架4 2等而一體的 被支撐住。具有彈性且支撐住下架的下吊器311則是經 過墊片309而由螺絲310鎖住架支撐器305，下吊 器3 1 1則由下架4 2及力シ乂筹而一體化。下磁頭2 2 是位下架4 2的一端，另一端側則以螺絲3 1 0爲支點。 再者，上架4 1及下架4 2係藉由設置於上架4 1及 下架4 2之間的磁頭荷重用彈簧而互相拉住。 本紙張尺度適用中國國家標準（CNS > A4规格（210X297公釐） " I.--^-------j ‘裝------訂------ (請先閲讀背面之注意Ϋ項再填寫本頁) 經濟部中央標隼局員工消費合作社印製 A7 _ _B7____ 五、發明説明（9) 再者，下架的突出部4 2 b係接到架支撐器3 0 5的 突出部3 0 5 a :藉由突出部4 1 a以能夠摺動的接到主 框架6的背面而限制住下架4 2使其不會移動到比架支撐 器更上面。 將銅製的齒條板（rack plate) 3 0 8由螺絲3 0 6 而裝設在塑膠製的架支撐器3 0 5上，而齒條小齒輪（ rack pi non )機構則係由步進機（stepper ) 2 2 5 (圖 2所示的馬達），及，裝設在步進機225的軸的齒輪， 及，齒條板3 0 8所構成。架（一體的保持上磁頭2 1及 下磁頭2 2，在圖3爲滑動軸（slide shaft)以外之部 材1則藉由齒條小齒輪機構及使架支撐器3 0 5保持能夠 摺動的滑動軸3 0 7，而能夠從軟碟的外周向內周，或從 內周面向外周移動。滑動軸3 0 7則係裝設在主框架6上 〇 使用圖4來說明，支撐上磁頭2 1的上架4 1 ，爲了 以槓桿比而得到較大移動而在上架支撐器51進行此支撐 這一點。 在圖4 (A) 、 （B)中，實線顯示在插入碟匣9時 (插入狀態）的上架4 1及上架支撐器5 1的關係，二點 鎖線則顯示在未插入碟匣9時（待機狀態）的兩者的關係 e 在上架4 1上形成了上架支撐部4 1 1 »而且，上架 支撐器51係以固定在匣支撐體3的上架支撐體51的支 點5 1 1爲支點而裝設爲能夠旋轉。在圖4中，上架支撐 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ~ " -12 - I--.-----! ‘裝------訂-------- (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 308685 A7 _B7____五、發明説明（10) 器4 1 1係重合在上述支撐器5 1的右端（離支點5 1 1 距離b ;參照圖4 (B))之上。另一方面，在上架支撐 器5 1的左端（離支點5 1 1距離a )則設置了：調整上 架支撐器5 1的舉起量的調節螺絲5 1 2 (調節螺絲 5 1 2係設置於由螺絲2 2 8所固定的調節引導（guide )226上；參照圊2);藉由調整螺絲512便能夠使 上架支撐器4 1 1及上架支撐器5 1的右端所向對的間隙 調整爲適當的狀態· 在圖4的實線狀態及圖1 1的狀態（插入狀態）時， 支撐於上架41的上磁頭會與磁碟91接觸而能夠讀取記 錄於磁碟9 1的上面的資訊或是做寫入。再者，支撐於下 架4 2的下磁頭2 2也與磁碟接觸而能夠讀取記錄於磁碟 91下面的資訊或做寫入。 若是按下退出（eject)鍵1 5，則因爲會從匣插入 狀態變回匣待機狀態（圖4的二點鎖線），所以匣支撐體 3會往上昇（參照圚1 〇、圖1 1 )，固定於匣支撐體3 的上架支撐器的支點511也會與匣支撐體3—起往上昇 。此時，因爲上架支撐器51的左端（圖4)，會由於調 整螺絲512(註：因爲調整螺絲512係經由調整引導 2 2 6而固定在主框架6上，所以從匣插入到待機並不會 移動）的阻止而無法上昇，所以如二點鎖線所示的，以支 點5 1 1爲中心的上架支撐器5 1的右端（圚4)的上昇 會擴大爲槓桿比的b/a倍。 如此，藉由使架支撐器5 1的移動與匣支撐體3連動 ----------•一 -裝------訂------，旅 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X29>7公釐） 13 - A7 B7 經濟部中央標準局貝工消費合作社印聚 五、 發明説明（ 11) 1 | 但 能 夠 以 槓桿 比而得到上架的大移動量。 由此 ，便能夠 使 1 1 做 爲 可 動 輔助 記錄裝置的軟碟裝置薄型化 〇 1 [ 此 處 ，在 上架支撐器5 1及上架4 1 上昇 而在待機 狀 1 I 請 1 j* 態 ( 二 點 鎖線 的狀態）下，對上架4 1的 移動 而言，即 使 先 閲 1 | 1 上 架 4 1 在上 下做不小的移動，匣支撐體 3也 只要移動 其 背 面 I | 槓 桿 比 的 部份 即可（譬如說，若上架4 1 需要 移動3 mm > 之 注 意 1 1 且 若 槓 桿 比a :b = 1 : 3，則匣支撐體 3只 會移動1 _ 項 填 ) e 寫 本 頁 裝 1 但 是 ，在 待機狀態下，對匣支撐體3 的移 動（彎曲 ) ___· 1 而 » 即 使匣 支撐體3僅彎曲一點點則也 會擴 大槓桿比 的 1 1 倍 數 而 使上 架4 1做大的移動，而會使 裝設 在上架4 1 1 1 的 上 磁 頭 2 1 撞擊到下磁頭2 2而造成問 題。 訂 1 此 處 ，詳 述防止匣支撐體3的彎曲的 構成 及其作用 〇 1 I 匣 支 撐體 3 (圓1)係收藏於主框架 6 ( 圖2 )之 中 1 1 0 在 匣 支 撐體 3上裝設了用以插入碟匣9 及移 動並打開 碟 1 J 片 開 閉 器 9 2 (圓9)的開閉器槓桿12 ，及 ，經由支 點 1 5 1 1 ( 圖4 )而被支撐的上架支撐器5 1 〇 1 1 以 開 閉器 槓桿12的開閉器槓桿支點 13 爲中心、而 在 1 1 開 閉 器 槓 桿前 端部121的反對側形成開 閉器 槓桿延長 部 1 1 1 2 2 〇 圓4 顯示此開閉器槓桿延長部1 2 2 的擴大圚 〇 1 I 在 圖 4 中 ，在 開閉器槓桿12對打開碟片 開閉 器9 2的 A 1 1 I 方 向 做 移 動動 作時，開閉器槓桿延長部1 2 2 也會移動 向 1 1 I C 方 向 » 反之 ，在開閉器槓桿12對關閉 碟片 開閉器9 2 1 1 的 B 方 向 做移 動動作時，開閉器槓桿延長 部1 2 2也會 連 1 1 本紙張尺度適用中國國家橾準（CNS ) A4規格（210X297公嫠） -14 一 經濟部中央標準局員工消費合作社印製 A7 __一—____B7____ 五、發明説明（12) 動的移動向D方向。 在碟匣9在插入狀態（實線）時，此開閉器槓桿延長 部1 2 2會從上架支撐器5 1的下側退出。 在待機狀態時（二點鎖線）時，開閉器槓桿延長部 1 2 2會進入上架支撐器5 1的下側，而即使是上架支撐 器5 1受衝擊而想要向下做大幅的振動，也會由進入到上 架支撐器5 1下側的開閉器槓桿延長部1 2 2而將其阻止 即是，若是在待機狀態受到衝擊，則 (1 )接到上架4 1的突出部4 1 1的上架支撐器 51會承接住保持著上磁頭21的上架41的下沈》 (2 )而且，開閉器槓桿延長部1 2 2會承受住上架 支撐器5 1的下沈。 此處，若是開閉器槓桿延長部1 2 2承受住上架支撐 器51 ，則裝設在開閉器槓椁12的匣支撐體3本身的重 置G會使此匣支撐體3向下膂曲。 此處，本發明也可解決此匣支撐體3的彎曲。即是， 在待機狀態時，在匣支撐體3之下設置用以承接止此匣支 撐體3本身的支撐體安全裝置7。使用圖5〜圖8來說明 支撐體安全裝置7。 支撐體安全裝置7最好是由彈簧部材所做成，其形狀 如圖5所示》即是，支撐體安全裝置7係由：由插入碟匣 9而被推押的當接部71 ，及，在插入碟匣9時用以使匣 支撐體3下降並使匣支撐體3的前端部3 a做下降運動的 本紙張尺度適用中國國家標率（CNS ) A4規格（210X 297公釐〉~~~~ —--------；=* 裝------訂------^ ^ (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局負Η消費合作杜印製 A7 B7 五、發明説明（l3) 缺口部7 2，及，在待機狀態時’用以阻止匣支撐體3的 下降運動的接受部7 3 ’及’在當接部7 1受到推押時， 用以經由碟匣9而使當接部71能夠後退的彈簧部74， 及，藉由螺絲2 2 8而將支撐體安全裝置7固定在匣支撐 體3以外的位置（圖2的主框架6 )的支撐體安全裝置裝 設孔7 5，所構成。 支撐體安全裝置7的動作如圚6所示。即是，若碟匣 9插入匣支撐體3內（圚6 (B))，支撐體安全裝置7 會藉由受到碟匣9推押的彈簧部7 4而後退，而使匣支撐 體3的位部位置在支撐體安全裝置7的缺口部7 2。 若拔出碟匣9而成爲待機狀態（圖6 (A))，則因 爲彈簧部7 4會回復原狀而使接受部7 3進入匣支撐體3 的下方，在此待機狀態下，匣支撐體3的下部3 a會位置 在支撐體安全裝置7的接受部7 3，並在接受部承接住匣 支撐體3本身的彎曲。支撐體安全裝置7係配置於匣支撐 體3的易彎曲之處。 由以上所述，若媒體再生裝置在待機狀態受到衝擊， 則： (1 )在保持上磁頭2 1的上架4 1想要下沈時，上 架支撐器5 1會承接住上架4 1的突出部4 1 1。 (2 )在上架支撐器5 1想要下沈時，開閉器槓桿 1 2的延長部1 2 2會將其承接住。 (3)因爲開閉器槓桿12係裝設在匣支撐體3上， 所以匣支撐體3會想要下沈，但是在匣支撐體3想要下沈 本紙張尺度逋用中國國家橾準（CNS ) A4規格（210X2517公釐) ' -16 - ----.---；---裝------訂-------- (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 308685 at _B7 _五、發明説明（14) 時，支撐體安全裝置7會將其承接住。 再者，圖7係在其它資施例的支撐體安全裝置的形狀 。支撐體安全裝置7備有：被所插入的碟匣9推押的當接 部7 6，及*用以在插入碟匣9時使匣支撐體3的前端部 能夠做下降運動的缺口部7 7。再者，支撐體安全裝置7 係由：在待機狀態時，用以阻止匣支撐體3的下降動作的 接受部81 ，及，用以阻止上架支撐器51的下降運動的 接受部8 1 ，及，在當接部7 6被碟匣9的前端所推押時 ，用以使當接部7 6能夠做後退移動的彈簧部7 9，及， 將此支撐體安全裝置7固定在匣支撐體3以外的位置（如 主框架6 )的支撐體安全裝置裝設孔8 0。 圖8顯示此支撐體安全裝置7的動作。即是，在碟匣 9插入匣支撐體3內時（圖8 (B))，支撐體安全裝置 7會受到碟匣9的推押而後退，而匣支撐體3的前端部 3 a則會位置在支撐體安全裝置7的缺口部7 7。而且， 在上架支撐器5 1的前端突出部5 1 a (參照圖1 )的下 部沒有任何干涉的部材，使上架支撐器5 1能夠自由的下 降到接受部7 8爲止。 若拔出碟匣9而成爲待機狀態（圖8(A))，則接 受部7 8會進入匣支撐體3的下面，而匣支撐體3的前端 部3 a會位置在支撐體安全裝置7的接受部7 8，並在接 受部7 8承接住匣支撐體3的彎曲，而用以阻止支撐體安 全裝置7的下降運動的接受部81則會位置在上架支撐器 5 1的下部。 本^氏張尺度逋用中國國家橾準（CNS ) A4規格（2ΐϋ< 297公釐） ' ""-17 - -------------·~ν裝------訂------？-Λ {請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局貝工消費合作社印製 A7 __B7_ 五、發明説明（15) 因此，從以上，在此第2實施例的待機狀態，媒體再 生裝置若是受到衝擊，則： (1 )在保持上磁頭2 1的上架4 1想要下沈時，上 架支撐器5 1會承接住上架4 1的突出部4 1 1。 (2 )在上架支撐器5 1想要下沈時，開閉器槓桿 1 2的延長部12 2會將其承接住。 (3 )在上架支撐器5 1想要下沈時，支撐體安全裝 置7的接受部8 1會承接住支撐器5 1 a的先端部。 (4)因爲開閉器槓桿12係裝設在匣支撐體3上， 所以由（2 )而會使匣支撐體3想要下沈，但是在匣支撐 體3想要下沈時，支撐體安全裝置7的接受部7 8會承接 住支撐體3 a的前端部》 〔發明之效果〕 如以上的說明，在本發明中，在受到強大衝擊時，上 架支撐器會承接住保持著上磁頭的上架的下沈，而且，開 閉器槓桿的延長部會承接住上架支撐器的下沈，由此，能 夠限制上架支撐器的彎曲，而可以得到保護磁頭的效果。 再者，因爲此開閉器槓桿係裝設在匣支撐體上，所以 雖然最後匣支撐體會想要下沈，但是因爲支撐體安全裝置 會承接住此匣支撐體的下沈，所以也具有可限制匣支撐體 本身的彎曲的效果。 再者，因爲上架支是由支撐體安全裝置所承接 住，所以也具有可限制上架支撐器的彎曲的效果》 本紙張尺度適用中國國家橾準（CNS ) A4规格（210 X 297公釐） I --- I - - I I —^1 - ....... HH (請先閲讀背面之注意事項再填寫本頁) A7 B7 經濟部中央標準局員工消費合作社印製 五、 發明説明 ( 16) 1 1 I [ Q9Q 閫 面 之簡 單 說 明 3 1 1 1 第 1圖 係 包 含 裝 設 於 匣 支 撐 體 的 本 發 明 的 開 閉 器 槓 桿 1 I 請 r 的 諸 部 材的 分 解 斜 視 圖 〇 先 閲 1 1 1 第 2圖 係 包 含 裝 設 於 主 框 架 的 本 發 明 的 支 撐 體 安 全 裝 背 1 I 之 1 I 置 的 m 部材 的 分 解 斜 視 圚 0 注 | 1 第 3圖 係 使 用 於 本 發 明 的 磁 頭 裝 設 部 的 分 解 斜 視 圖 〇 項 再 」 4 裝 第 4圓 係 顯 示 本 發 明 的 開 閉 器 槓 桿 延 長 部 的 動 作 的 截 寫 本 頁 1 面 圖 A 及平 面 圓 B 0 1 I 第 5圖 係 本 發 明 的 支 撐 體 安 全 裝 置 的 斜 視 圖 〇 1 1 第 6圖 係 顯 示 本 發 明 的 支 撐 體 安 全 裝 置 的 動 作 的 待 機 1 1 狀 態 截 面圖 A 及 插 入 狀 態 截 面 圖 B 〇 訂 1 第 7圚 示 本 發 明 的 其 它 實 施 例 的 支 撐 oak 體 安 全 裝 置 的 斜 1 | 視 99 0 1 1 第 8圓 係 顯 示 本 發 明 的 其 它 實 施 例 的 支 撐 體 安 全 裝 置 1 的 動 作 的待 機 狀 態 截 面 圖 A 及 插 入 狀 態 截 面 圖 B 0 1 第 9圖 係 使 用 於 本 發 明 的 匣 的 斜 視 圖 0 1 1 第 10 圖 係 顯 示 待 機 狀 態 的 圖 A 爲 概 略 截 面 圖 B 1 1 爲 概 略 平面 圚 〇 1 I 第 11 圖 係 顯 示 插 入 狀 態 的 圓 » A 係 概 略 截 面 圖 > B 1 1 爲 概 略 平面 圖 〇 1 1 [ tsl m 號 說明 ) 1 1 1 1 :媒 體 再 生 裝 置 1 1 本紙張尺度適用中國固家標率（峰4规格（膽赠）_ i9 · 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（17) 1 2 :開閉器槓桿 121:開閉器槓桿前端部 1 2 2 :開閉器槓桿延長部 2 1 :上磁頭 2 2 :下磁頭 3 =匣支撐體 3 a :匣支撐體下部前端部 4 1 :上架 * 4 1 1 :上架支撐器 4 2 :下架 5 1 :上架支撐器 5 1 a :突出部 511:上架支撐器支點 5 1 2 :上架支撐器上昇量調節螺絲 6 :主框架 7 :支撐體安全裝置 71 、76 :支撐體安全裝置當接部 72、 77 :支撐體安全裝置缺口部 73、 78 :支撐體安全裝置接受部 74、 79 :支撐體安全裝置彈簧部 81 :支撐體安全裝置的上架支撐器接受部 9 :碟匣 9 1 :磁碟 9 2 :碟開閉器 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）~ -20 - L--"-----； '裝------訂------J / (請先閲讀背面之注意事項再填寫本頁)Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 308685 A7 __B7_ V. Description of the invention (1) [Technical field of the invention] The present invention relates to at least a magnetic head for recording on a recording medium such as a floppy disk or for reproduction One of the magnetic head device. Specifically, it is related to preventing the impact of the two magnetic heads provided on both sides with the recording medium narrow, and making the device thinner. [Prior Art] In recent years, such media recording devices or media reproduction devices (discussed below are media reproduction devices) have been required to be more compact, thinner, and lighter. Moreover, portable computers with media reproduction devices And it can be carried to various places, so it will be impacted by drop 'impact, etc., and it is necessary to improve its impact resistance characteristics. When carrying a computer, the media reproduction device is mostly in the standby state, and the two magnetic heads (hereinafter referred to as the upper magnetic head and the lower magnetic head) provided on both sides of one recording medium are in a separated state from each other. Moreover, there is no recording medium such as a disc in the middle, but a space, so if it is impacted by a drop or the like in this state, the upper magnetic head will vibrate downward due to gravity, and with great force and The lower head directly impacts, which often causes damage to the upper and lower heads. [Problems to be Solved by the Invention] Here, in order to solve the above-mentioned problems, the present invention aims at the following. (1) Even if the portable computer is impacted by a drop or the like, it can prevent the upper head from directly impacting the lower head. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) --------- ^ --- installed ------ ordered ------ ^ travel (please read first Note on the back and fill in this page) 308685 hi _____B7_ printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Invention description (2) (2) Use leverage to obtain a large stroke from a very small change in leverage ratio As a result, as the media playback device becomes thinner, even if the cartridge operation amount is limited, the movable amount of the magnetic head can be sufficiently ensured, and the media playback device becomes thinner. (3) Provide: Even if the accuracy of the operation device is deteriorated, fine adjustment in height can be made by the adjustment mechanism, and it can be used as a media reproduction device for self-protection of the cassette support. [Means to solve the problem] The reproduction device of the present invention is: (1) A reproduction device that uses the first magnetic head and the second magnetic head from a recording medium mounted between the first magnetic head and the second magnetic head At least one of the reproduction devices for reading recorded information is characterized by having a first frame that holds the first magnetic head movably, and that holds the second magnetic head movably together with the first magnetic head The second frame, and, when the recording medium is not mounted, the first frame is held at a relative frame support away from the second frame to separate the first magnetic head from the second magnetic head. (2) As described in (1) above, which includes: a support that holds the recording medium when the recording medium is installed, and 'when the recording medium is not installed, the protection of the recording medium is opened and closed. China National Standard (CNS) A4 specification (210X297mm) ---.------ installed ------ ordered ------- travel (please read the notes on the back before filling in this Page) 308685 A7 __B7_ 5. Description of the invention (3) The lever of the shutter opened so that the first or second magnetic head can read information from the recording medium; the lever of the shutter is rotatably provided on the support When the recording medium is not installed, a part of the lever is arranged between the frame supporter and the support body to prevent the frame supporter from moving. (3) The aforementioned (1), wherein: when the recording medium is not mounted, the rack supporter moves the first rack and the second rack at a distance by moving a part of the first rack. (4) The aforementioned (1) or (3), wherein: the frame supporter is rotatably provided on the support body; and has an adjustment member for adjusting the rotation angle " (5) As described in (2) In which: when the recording medium is not mounted, a holder guard is provided to prevent the movement of the support. (6) As mentioned in (5) above, where: Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page) The aforementioned safety device for the support body is an elastic material. (7) As described in (6) above, wherein: one end of the security device of the support body is fixed 'If the recording medium is inserted, a part of it will be pushed in the direction of insertion, and it has a notch for receiving the support body. (8) As mentioned in (7) above, where: The aforementioned support safety device, when not inserted into the aforementioned recording medium, has the paper size applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) p -〇- Ministry of Economic Affairs A7 B7 is printed by the Central Consumers Cooperative of the Provincial Bureau of Standards. 5. Description of the invention (4) There is a receiving section that accepts a part of the aforementioned support. (9) The aforementioned (8), wherein: the support body safety device has a receiving portion that receives a part of the rack supporter when the recording medium is not inserted. Furthermore, the information recording and reproducing device with the magnetic head anti-collision device of the present invention is: (1) An information recording and reproducing device with the magnetic head anti-collision device, which is provided with: respectively supported to read magnetic data from the upper side and the lower side respectively The upper and lower heads of the disk, and the upper and lower racks that are always in a mutually traction state, and, when the cassette storing the aforementioned disk is inserted, it will move downward and be fixed, and will return to the upper cassette support when it is detached; The cassette support body is provided with: a shelf supporter that is rotatably supported by the middle portion and supports the cassette with the aforementioned portion, and an opener that opens the cassette when the cassette is inserted into the cassette support body, and When detached, the shutter lever of the shutter is closed; therefore, if the cartridge is inserted into the cartridge support, the cartridge support will move downward and be fixed, and at the same time, the aforementioned shutter lever will open the shutter of the cartridge, And the upper and lower magnetic heads are in contact with the magnetic disk from above and below at the opening of the switch, and if the cartridge is detached from the cartridge support, the cartridge support will move upward and be fixed. The shutter lever closes the shutter of the box, and the information recording and reproducing device that separates the upper and lower magnetic heads from each other is characterized in that: the shutter lever is provided with: the lever of the shutter that opens and closes the shutter of the box. The opening and closing movements are linked, and can be retracted from below the upper shelf support. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) L ---.------ i ---- --IT ------- -Success (please read the precautions on the back before filling in this page) 308685 A7 __B7_ printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Description of the invention (5) and enter the shelf support Extension below the device. (2)-An information recording and reproducing device with a magnetic head anti-collision device, equipped with = upper and lower magnetic heads for reading the magnetic disk from the upper side and the lower side, respectively, and the upper and lower heads are always in the state of mutual traction Shelf, and, when the cassette storing the aforementioned disk is inserted, it will move downward and be fixed, and will return to the upper cassette support body when it is detached; the cassette support body is provided with: A rack support that rotates and supports the aforementioned E at the front end, and when the cartridge is inserted into the cartridge support, the shutter of the cartridge is opened, and when detached, the shutter lever of the shutter is closed; thereby If the cartridge is inserted into the cartridge support, the cartridge support will move downward and be fixed. At the same time, the shutter lever will open the shutter of the cartridge, and at the opening of the shutter, the upper and lower magnetic heads will move from above, The lower part is in contact with the magnetic disk, and if the cartridge is detached from the cartridge support body, the cartridge support body will move upward and be fixed. At the same time, the shutter lever will close the shutter of the cartridge, causing the aforementioned up and down Two magnetic heads The separate information recording and reproduction device is characterized by the following: when the disk cartridge is inserted into the cartridge support, it is pushed by the cartridge and exits from under the cartridge support, otherwise, the When the disc case is pulled out, it will enter the case support body again, and when the case support body is not lowered, it will accept the lower part of the case support body, the support body safety device. (3)-An information recording and reproducing device with a magnetic head anti-collision device, equipped with: This paper standard is applicable to China National Stack Standard (CNS) A4 specification (210X297mm) ~ " ----.---- --j-装 ------ 定 -----'--- J brigade (please read the precautions on the back before filling in this page) Employee consumption cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs A7 ______B7_ 5 Description of the invention (6) Support the upper and lower heads for reading the magnetic disk from the upper and lower sides respectively, and the upper and lower racks that are always in a mutually traction state, and, when the case storing the aforementioned magnetic disk is inserted Move and fix downward, and return to the upper case support body when disengaged; the case support body is provided with: the middle part is rotatably supported and the front end part supports the above frame support body, and, When the cassette is inserted into the cassette support, the latch of the cassette is opened, and when it is disengaged, the shutter lever of the shutter is closed; thus, if the cassette is inserted into the cassette support, the cassette support will Move downward and fix it. At the same time, the aforementioned lever will open the shutter of the box and The opening of the shutter makes the upper and lower magnetic heads contact the magnetic head from above and below, and if the cartridge is detached from the cartridge support, the cartridge support will move upward and be fixed, and at the same time, the shutter lever will close The opening and closing device of the magazine, and the information recording and reproducing device that separates the upper and lower heads from each other, is characterized in that: when the said magazine is inserted into the magazine support, it is pushed by the magazine and pulled from the above shelf The lower part of the supporter is withdrawn. On the contrary, when the tray is pulled out, it will enter the lower part of the upper shelf supporter again and will accept the lower part of the upper shelf supporter when the tray supporter is not lowered. Installation [action] The lever of the shutter is used to open and close the shutter of the magazine. The extension part of the lever of the shutter is in the standby state before the tray is inserted-some are under the upper shelf support β This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) I-^ ------ ------ 1T ------ 7% (please read the precautions on the back before filling in this page) -9-A7 ___B7_ printed by Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 2. Description of the invention (7) If the disc tray is inserted and inserted, the extension of the upper shelf support body will come out from below the upper shelf supporter. In addition, it is also set that when the disc tray is inserted into the tray support body, it will be pushed by the disc tray and withdraw from below the upper shelf supporter, otherwise, when the disc tray is pulled out, it will enter the upper shelf again Under the support 51, when the box support is not lowered, it will receive the lower part of the upper support. The safety device of the support "With the above device, when the strong impact is received, the upper support will be held The upper frame sinking force of the upper magnetic head, and the extension part of the lever of the shutter will receive the lowering force of this upper frame supporter. Therefore, the bending of the upper frame supporter can be restricted and the magnetic head can be protected. Moreover, because the shutter lever is installed on the cassette support body, although the final cassette support body will sink, but because the support body safety device will accept the sinking of the cassette support body, it can also restrict the cassette support body Bending of itself> Moreover, the safety device of the supporting body can also directly receive the sinking of the upper shelf supporter, so that the bending of the upper shelf supporter itself can be restricted. [Embodiment of the invention] The embodiment of the present invention will be described below. In the following, a floppy disk is used as a recording medium, and two upper and lower magnetic heads that perform magnetic reading and writing (reproduction, recording) on both sides of the floppy disk are used. The recording medium can also be, for example, a disc for ZIP (trademark of 74 companies), a disc for hard disks (fixed discs), optical discs, optical disks, etc .; the present invention can be applied to Chinese national standards with the configuration of this paper standard (CNS) A4 specification (210X297mm) I ---.----- ^ < outfit ------ order ----- 7 brigade (please read the notes on the back before filling this page ) The Ministry of Economic Affairs, Central Bureau of Standards, and Consumer Cooperation Co., Ltd. prints and prints A7 __B7. 5. Description of Invention (8) The device for recording and reproducing the head on both sides of these discs. A circle 1 to circle 4 will be used to describe a media reproduction device in the form of a large mobile boy with a leverage ratio. Tu 1 is an exploded perspective view of the components of the cassette support body 3 installed in the cassette support body 3 (FIG. 9) supporting the floppy disk. The circle 2 is an exploded perspective view of the components installed in the main frame 6 of the receiving cartridge support 3. Fig. 3 is an exploded perspective view of a frame in which an upper head 21 and a lower head 22 are installed. Description 囵 3. First, the upper head 2 1 connected to the upper side of the floppy disk will be described. The upper magnetic head 2 1 is integrally supported by being joined to the upper test 4 1 etc. holding the upper magnetic head 2 1. The hanger (3113 port 6115 丨 111) 3 0 3 which is elastic and supports the upper frame 4 1 is locked on the frame supporter 3 0 5 by screws 3 0 1 through the gasket 3 0 2 and the upper hanger 3 0 3 Then, it is integrated by the shelf 41 and force syy. The upper magnetic head 21 is located at one end of the upper frame 41 and the other end side is connected to the upper side of the frame supporter 305, and serves as a fulcrum when the upper magnetic head 21 is moved up and down. Next, the lower head 22 connected to the lower side of the floppy disk will be described. The lower magnetic head 2 2 is integrally supported by being joined to the lower frame 4 2 holding the lower magnetic head 2 2 or the like. The lower hanger 311 which has elasticity and supports the lower frame is locked by the screw 310 through the spacer 309 to the lower frame support 305, and the lower hanger 3 1 1 is integrated by the lower frame 4 2 and the force frame. The lower magnetic head 2 2 is located at one end of the lower frame 4 2, and the other end side uses the screw 3 10 as a fulcrum. Furthermore, the upper frame 4 1 and the lower frame 4 2 are pulled against each other by a spring loaded between the upper frame 4 1 and the lower frame 4 2 by a spring. This paper scale is applicable to the Chinese National Standard (CNS > A4 specification (210X297mm) " I .-- ^ ------- j 'installation ------ order ------ (please Read the note Ϋ on the back first and then fill out this page) A7 _ _B7____ printed by the Employee Consumer Cooperative of the Central Standard Falcon Bureau of the Ministry of Economic Affairs 5. Invention Description (9) Furthermore, the protrusion 4 2 b of the lower shelf is attached to the shelf support 3 0 5 protrusion 3 0 5 a: The protrusion 4 1 a is foldably connected to the back of the main frame 6 to restrict the lower frame 42 from moving above the frame supporter. The rack plate 3 0 8 made of copper is mounted on the rack support 3 0 5 made of plastic by screws 3 0 6, and the rack pi non mechanism is made of a stepper (Stepper) 2 2 5 (the motor shown in FIG. 2), and the gear mounted on the shaft of the stepper 225, and the rack plate 308. The frame (integrally holding the upper magnetic head 21 and The lower magnetic head 22, in FIG. 3 is a part other than a slide shaft (slide shaft) 1. The rack pinion mechanism and the rack support 3 0 5 hold the slide shaft 3 0 7 which can be folded, and can be removed from the soft The outer circumference of the dish to the inner circumference, or The inner circumference faces the outer circumference. The sliding shaft 3 0 7 is mounted on the main frame 6. Using FIG. 4 to explain, the upper frame 4 1 that supports the upper magnetic head 2 1 is supported on the upper frame in order to obtain greater movement with a lever ratio. The device 51 performs this support. In FIGS. 4 (A) and (B), the solid line shows the relationship between the upper shelf 41 and the upper shelf support 51 when the disc cartridge 9 is inserted (inserted state), and the two-point lock line Shows the relationship between the two when the magazine 9 is not inserted (standby state). E. The upper shelf support portion 4 1 1 is formed on the upper shelf 4 1. Furthermore, the upper shelf support 51 is fixed to the upper shelf support body of the cassette support body 3 51's fulcrum 5 1 1 is a fulcrum and is installed to be able to rotate. In Figure 4, the paper standard supported by the upper shelf is the Chinese National Standard (CNS) A4 specification (210X297mm) ~ " -12-I --.- ----! 'Installation ------ order -------- (please read the precautions on the back before filling in this page) 308685 A7 _B7____printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Description of the invention (10) The device 4 1 1 coincides with the right end of the above-mentioned support 51 (distance b from the fulcrum 5 1 1; refer to FIG. 4 (B)). On the left, at the left end (distance a from the fulcrum 5 1 1 a) of the upper frame support 5 1 is set: an adjusting screw 5 1 2 for adjusting the lifting amount of the upper frame support 5 1 (the adjusting screw 5 1 2 is provided by the screw 2 2 8 fixed on the guide (guide) 226; refer to the cell 2); by adjusting the screw 512, the gap between the right ends of the upper frame support 4 1 1 and the upper frame support 5 1 can be adjusted to be appropriate State · In the solid state of FIG. 4 and the state of FIG. 11 (inserted state), the upper magnetic head supported on the upper frame 41 will contact the magnetic disk 91 and can read the information recorded on the magnetic disk 91 or Do write. Furthermore, the lower head 22 supported by the lower frame 42 is also in contact with the disk and can read or write information recorded under the disk 91. If the eject button 15 is pressed, the cartridge support 3 will rise upwards because it will change from the cartridge insertion state to the cartridge standby state (two-point lock line in FIG. 4) (refer to FIG. 10, FIG. 1 1) The fulcrum 511 of the upper shelf supporter fixed to the cassette support 3 will also rise with the cassette support 3. At this time, because the left end of the upper frame support 51 (FIG. 4) is fixed to the main frame 6 by the adjustment screw 512 (Note: because the adjustment screw 512 is fixed via the adjustment guide 2 2 6, the insertion from the cassette to standby is not Will move) and cannot rise, so as shown by the two-point lock line, the rise of the right end (圚 4) of the upper shelf support 5 1 centered on the pivot 5 11 will expand to b / a times the leverage ratio. In this way, by linking the movement of the shelf support 51 to the cassette support 3 ---------- one-installed ------ ordered -----, travel (please first Read the precautions on the back and fill in this page) This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X29> 7mm) 13-A7 B7 Printed and printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention (11 ) 1 | But you can get a large amount of movement on the shelf with a leverage ratio. As a result, it is possible to make the floppy disk device 1 1 which is a movable auxiliary recording device thinner. [Here, the upper shelf support 5 1 and the upper shelf 4 1 are raised and are in the standby state. In the state where the thread is locked), for the movement of the upper rack 4 1, even if the first reading 1 | 1 the upper rack 4 1 does not move up and down, the cassette support 3 only needs to move its back I | leverage part Yes (for example, if the rack 4 1 needs to move 3 mm > Note 1 1 and if the lever ratio a: b = 1: 3, the cartridge support 3 will only move 1 _ item fill) e write this page install 1 However, in the standby state, the movement (bending) of the cassette support 3 ___ · 1 and »Even if the cassette support 3 is only bent a little, it will expand the leverage ratio by 1 1 to make the rack 4 1 move larger , And the upper magnetic head 2 1 installed on the upper frame 4 1 1 1 will hit the lower magnetic head 2 2 and cause a problem. Order 1 Here, the structure and function of preventing the box support 3 from bending are described in detail. The box support 3 (circle 1) is stored in the main frame 6 (Figure 2) 1 1 0 in the box support 3 A shutter lever 12 for inserting the magazine 9 and moving and opening the disc 1 J blade shutter 9 2 (circle 9) is installed on the top, and the upper shelf support is supported via a fulcrum 1 5 1 1 (Figure 4) The switch 5 1 〇1 1 is centered on the switch lever fulcrum 13 of the switch lever 12 and a switch lever extension 1 1 1 1 2 2 is formed on the opposite side of the 1 1 switch lever front end 121. Circle 4 shows this switch Enlargement of the lever extension 1 2 2 〇1 I In FIG. 4, when the shutter lever 12 moves in the A 1 1 I direction to open the disc shutter 9 2, the lever extension 1 2 2 It will also move in the direction of 1 1 IC »Conversely, when the shutter lever 12 moves in the direction B of closing the disc shutter 9 2 1 1, the shutter lever extension 1 2 2 will also connect 1 1 paper size Applicable to Chinese national standards CNS) A4 size (210X297 public widow) -14 a Ministry of Economic Affairs Bureau of Standards employees consumer cooperatives printed A7 __ a -____ B7____ V. invention is described in (12) moves in the moving direction D. When the tray 9 is in the inserted state (solid line), the shutter lever extension 1 2 2 will exit from the lower side of the upper shelf support 5 1. In the standby state (two-point thread lock), the lever extension 1 2 2 of the shutter will enter the lower side of the upper frame support 5 1, and even if the upper frame support 5 1 is impacted and wants to vibrate down greatly, It will also be blocked by the shutter lever extension 1 2 2 that enters the lower side of the upper shelf support 5 1. That is, if it is impacted in the standby state, (1) is connected to the protrusion 4 1 1 of the upper shelf 4 1 The upper shelf support 51 will accept the sinking of the upper shelf 41 holding the upper magnetic head 21 (2). Furthermore, the shutter lever extension 1 2 2 will withstand the sinking of the upper shelf support 51. Here, if the shutter lever extension 1 2 2 receives the upper shelf support 51, the resetting of the cassette support 3 itself mounted on the shutter bar 12 causes the cassette support 3 to buckle downward. Here, the present invention can also solve the bending of the cassette support 3. That is, in the standby state, a supporting body safety device 7 for receiving the cassette supporting body 3 itself is provided under the cassette supporting body 3. The support body safety device 7 will be explained using FIGS. 5 to 8. The supporting body safety device 7 is preferably made of a spring member, and its shape is as shown in FIG. 5. That is, the supporting body safety device 7 is composed of: a contact portion 71 pushed by being inserted into the disc case 9, and , The paper scale used to lower the cassette support 3 and make the front end 3 a of the cassette support 3 move downward when inserting the disc tray 9 is applicable to the Chinese National Standard Rate (CNS) A4 specification (210X 297 mm> ~ ~~~ —--------; = * Installed ------ ordered ------ ^ ^ (please read the precautions on the back before filling this page) The Ministry of Economic Affairs Central Standards Bureau is negative Η Consumer Cooperation Duprint A7 B7 V. Description of the invention (l3) Notch 7 2 and, in the standby state, the 'receiving part 7 3 to prevent the descending movement of the cassette support 3 3' and the 'receiving part 7 1 When pushed, the spring portion 74 for allowing the contact portion 71 to retreat through the disc 9 and the support safety device 7 is fixed at a position other than the cassette support 3 by screws 2 2 8 ( The support safety device of the main frame 6 of FIG. 2 is provided with holes 75, and the operation of the support safety device 7 is as shown in Fig. 6. That is, if the magazine 9 is inserted into the cartridge support 3 (J 6(B)), the supporting body safety device 7 will be retracted by the spring portion 74 pushed by the disc cartridge 9, so that the position of the cassette supporting body 3 is at the notch portion 72 of the supporting body safety device 7. If Pull out the disc case 9 and enter the standby state (FIG. 6 (A)), because the spring part 7 4 will return to its original state, and the receiving part 7 3 enters under the case support body 3. In this standby state, the case support body 3 The lower part 3 a is located at the receiving portion 73 of the support safety device 7 and receives the bending of the cassette support 3 itself at the receiving portion. The support safety device 7 is arranged at a position where the cassette support 3 is easily bent. From the above, if the media reproduction device is impacted in the standby state, then: (1) When the upper frame 4 holding the upper magnetic head 2 1 wants to sink, the upper frame support 5 1 will receive the protrusion of the upper frame 4 1 4 1 1. (2) When the upper support 5 1 wants to sink, the extension 1 2 2 of the shutter lever 12 will accept it. (3) Because the shutter lever 12 is installed on the box support On the body 3, so the cassette support 3 will want to sink, but on the cassette support 3 you want to sink the paper size using the Chinese National Standard (CNS ) A4 specification (210X2517mm) '-16-----.---; ----------------------- (please read the notes on the back before filling in This page) The Ministry of Economic Affairs Central Standards Bureau employee consumer cooperative printed 308685 at _B7 _V. Invention description (14), the support body safety device 7 will accept it. In addition, Figure 7 is supported by other funding examples The shape of the body safety device. The support body safety device 7 is provided with: a contact portion 76 pushed by the inserted magazine 9 and * to enable the front end of the magazine support 3 to be made when the magazine 9 is inserted The notch part of the downward movement 7 7. Furthermore, the supporting body safety device 7 is composed of: a receiving portion 81 for preventing the lowering movement of the cassette supporting body 3 in the standby state, and a receiving portion 8 1 for preventing the lowering movement of the shelf support 51, and , When the connecting portion 76 is pushed by the front end of the magazine 9, the spring portion 79 used to enable the connecting portion 76 to move backwards, and fix the support safety device 7 to the cassette support The support safety device installation hole 80 at a position other than 3 (such as the main frame 6). FIG. 8 shows the operation of this support safety device 7. That is, when the cartridge 9 is inserted into the cartridge support 3 (FIG. 8 (B)), the support safety device 7 will be pushed back by the cartridge 9, and the front end 3 a of the cartridge support 3 will be The position is at the notch 77 of the support safety device 7. In addition, there is no interfering material at the lower part of the front end protrusion 5 1 a (see FIG. 1) of the upper shelf support 51, so that the upper shelf support 5 1 can be lowered freely to the receiving portion 78. If the magazine 9 is pulled out and becomes the standby state (FIG. 8 (A)), the receiving portion 78 will enter the underside of the cassette support 3, and the front end 3 a of the cassette support 3 will be located in the support safety device 7 The receiving portion 78 of the receiving portion 78 receives the bending of the cartridge support 3, and the receiving portion 81 used to prevent the lowering movement of the support safety device 7 is located at the lower portion of the upper shelf support 51. This ^ 's Zhang scale uses the Chinese National Standard (CNS) A4 specification (2lϋ < 297mm)' " " -17-------------- · ~ ν installed- ---- order ------? -Λ (Please read the precautions on the back before filling in this page) A7 __B7_ printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy V. Invention description (15) Therefore, from the above, in the standby state of the second embodiment, If the media reproduction device is impacted: (1) When the upper frame 4 1 holding the upper magnetic head 2 1 wants to sink, the upper frame support 5 1 will receive the protrusion 4 1 1 of the upper frame 4 1. (2) When the upper frame support 5 1 wants to sink, the extension portion 12 2 of the shutter lever 12 will accept it. (3) When the upper frame support 5 1 wants to sink, the receiving portion 8 1 of the support safety device 7 will receive the front end of the support 5 1 a. (4) Since the shutter lever 12 is installed on the cassette support body 3, the cassette support body 3 wants to sink by (2), but when the cassette support body 3 wants to sink, the support body is safe The receiving portion 78 of the device 7 will receive the front end of the support 3a. [Effects of the invention] As described above, in the present invention, when receiving a strong impact, the upper frame supporter will receive the holding head. The sinking of the upper frame, and the extension of the lever of the shutter can receive the sinking of the upper frame supporter, whereby the bending of the upper frame supporter can be restricted, and the effect of protecting the magnetic head can be obtained. Furthermore, because the shutter lever is installed on the cassette support body, although the cassette support body will want to sink in the end, the safety device of the support body will accept the sinking of the cassette support body, so it also has a limit The bending effect of the cartridge support itself. In addition, because the upper shelf is supported by the safety device of the supporting body, it also has the effect of restricting the bending of the upper shelf. This paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) I --- I--II — ^ 1-....... HH (please read the precautions on the back before filling in this page) A7 B7 Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention (16 ) 1 1 I [Q9Q Brief description of the face 3 1 1 1 Figure 1 contains the shutter lever of the present invention mounted on the cartridge support 1 I Please exploded perspective view of the parts of the r. Read 1 1 1 Figure 2 includes the exploded squint of the m-section material of the support safety device back 1 I to 1 I of the present invention mounted on the main frame. Note | 1 Figure 3 is used for the magnetic head mounting part of the present invention. Exploded oblique view 〇 item again " 4 The fourth circle is a section showing the operation of the lever extension of the shutter of the present invention. Page 1 Plan A and Plane Circle B 0 1 I Figure 5 is a perspective view of the support safety device of the present invention 〇1 1 Figure 6 is a diagram showing the standby of the operation of the support body safety device of the present invention 1 1 state cross-sectional view A and inserted state cross-sectional view B. Order 1 Figure 7 shows the oblique 1 of the supporting oak body safety device of another embodiment of the present invention | View 99 0 1 1 The eighth circle shows the standby state sectional view A and the inserted state sectional view B of the support safety device 1 of another embodiment of the invention. Oblique view 0 1 1 Page 10 Figure 10 shows the standby state. A is a schematic cross-sectional view. B 1 1 is a schematic plan view. 1 I 11 Figures show the circle in the inserted state »A series of schematic cross-sections> B 1 1 is a schematic plan view 〇 1 1 [tsl m number description] 1 1 1 1: Media reproduction device 1 1 This paper size is subject to China ’s national standard rate (Peak 4 specifications (gold gift) _ i9 · A7 B7 printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention (17) 1 2: shutter lever 121: shutter lever front end 1 2 2: shutter lever Extension 2 1: Upper head 2 2: Lower head 3 = Cassette support 3 a: Cassette support lower front end 4 1: Upper frame * 4 1 1: Upper frame support 4 2: Lower frame 5 1: Upper frame support 5 1 a: protrusion 511: upper frame supporter fulcrum 5 1 2: upper frame supporter lifting amount adjusting screw 6: main frame 7: support body safety device 71, 76: support body safety device when the connection part 72, 77: support body safety Device notch parts 73, 78: Support body safety device receiving parts 74, 79: Support body safety device spring part 81: Shelf support device receiving part 9 of the support body safety device 9: Disc 9 1: Disk 9 2: Disc opening and closing This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) ~ -20-L-"-----; 'installed ------ made ------ J / ( (Please read the notes on the back before filling this page)