201138410 六、發明說明：201138410 VI. Description of the invention:
I：發明所屬之技術領域J 發明領域 本發明係有關於一種具有電池罩之行動終端裝置，且 該電池罩係堵塞收納有電池之電池室。 L先前技冬好]1 發明背景 近年來，特別是在使用於業務用之行動終端裝置時， 由於電力之損耗量會因例如掃瞄器裝置等之使用而變多， 因此必須定期地交換充電電池(例如1次/日），且電池罩係設 計成可藉由簡單之操作來裝卸之結構。 又，電池罩必須滿足以下規格，即：即使在例如讓行 動終端裝置掉落等而承受衝擊時亦不會破損，且可維持防 水性能。 另，包含行動終端裝置之電子機器之防水規格係設定 以下程度之防水水準，即：在例如JIS/IEC(國際電氣標準會 議）中的IPx7之保護等級中，於溫度範圍15°C至35°C等中， 裝置最下端在距離水面有lm之潛水下，即使試驗時間30分 鐘亦不會滲水。 故，行動終端裝置宜為以下所述者，即：：於外罩閉塞 時可取得防水所必須之襯墊壓，再者，具有即使在讓裝置 誤掉落等時亦不易破損5且防水性能不會輕易受損之而ί衝 十生〇 對此，舉例言之，於專利文獻1中揭示有一種行動終端 201138410 裝置之構造，其係包含有：電池，係收納於電池收納部者； 及蓋體，係閉塞電池收納口者；又，於蓋體與電池收納口 間配置有保持密閉狀態之襯墊。 該襯墊係作成嵌入蓋體之内側周圍之狀態，並防止水 自電池收納口滲入。 又，於專利文獻2中，在行動終端裝置中，電池罩包含 有：蓋體，係藉由彈性材料來構成與電池相對向之内侧部 分，並藉由板金來構成外側部分者；及外罩，係覆蓋該蓋 體者；又’達成所謂電池罩之雙重化。 又’安裝於蓋體之軸係裝設於裝置本體側之軸承部， 且蓋體係以橫開方式開關。又，外罩係具有掛扣在裝置本 體側之爪及鎖桿。 然而，於專利文獻1中，由於蓋體係藉由掛鈎而掛扣在 裝置本體之外殼，因此，在讓裝置本體誤掉落等時，掛鈎 會因衝擊而破損或脫落，並有配置於蓋體_關之襯塾 的防水性能受損之虞。 又，於專利文獻2中，蓋體與外罩並非是一體結構而是 由不同形體分別構成，因此，在讓裝置本體誤掉落等時， 外罩之爪等會叫落時讀㈣破損並麟，15]時會有支 持蓋體之裝置本體側的軸承部破損之虞。再者，若該外罩 及蓋體破損’則電池罩之防水性能會受損。 ” 先行技術文獻 專利文獻 專利文獻1 ·日本專利公開公報特開平10-241648號公報 4 201138410 專利文獻2 :特開2008-130519號公報 【發明内容】 發明揭示 本發明係提供一種行動終端裝置，該行動終端裝置係 即使在裝置本體承受衝擊力時，亦可防止電池罩之破損， 並具有優異之防水機能。 本發明係一種行動終端裝置，其係具有電池罩，且該 電池罩係堵塞形成於裝置本體並收納電池之電池室之開口 部者，其特徵在於：前述電池罩係具有業已積層、接著外 側罩與内側罩之一體結構，且前述内側罩係具有透過固定 機構積層於前述外側罩並由不同於該外側罩之材料所構成 的補強構件及密封構件。 依據本實施形態，由於内側罩係具有透過固定機構積 層於外側罩並由不同於該外側罩之材料所構成的補強構件 及密封構件，因此，即使外側罩因掉落等而承受衝擊力並 破損，亦可藉由補強構件來保護，且電池室之内部不會露 出。又，藉由密封構件，可維持電池室與電池罩間之防水 機能。 圖式簡單說明 第1圖係自前面側觀看本發明之實施形態的行動終端 裝置之外觀圖。 第2圖係自背面側觀看本發明之實施形態的行動終端 裝置之外觀圖。 第3圖係卸下電池罩而自背面側觀看行動終端裝置之 201138410 外觀圖。 第4A圖係自内面側觀看電池罩時之外觀圖。 第4B圖係自内面側觀看電池罩時之其他實施形態之外 觀圖。 第5A圖係自内面側觀看外側罩時之外觀圖。 第5B圖係自内面側觀看外側罩時之其他實施形態之外 觀圖。 第6A圖係將内側罩積層於外側罩之内面時的電池罩之 分解立體圖。 第6B圖係將内側罩積層於外側罩之内面時的電池罩之 其他實施形態之分解立體圖。 第7圖係槓桿臂、操作板及操作旋鈕之分解立體圖。 第8圖係槓桿臂、操作板及操作旋鈕之組裝圖。 第9圖係自内面側觀看電池罩時之平面圖。 第10A圖係顯示槓桿臂之解除鎖定狀態圖。 第10B圖係顯示槓桿臂之鎖定狀態圖。 I：實施方式3 用以實施發明之形態 以下，根據圖式，說明本發明之實施形態。 第1圖係自前面側觀看本發明之實施形態的行動終端 裝置之外觀圖，第2圖係自其背面側觀看之外觀圖。 行動終端裝置係已知作為HHT(手持終端機，Hand Held Terminal)，且可攜帶並能進行販賣管理、庫存管理或採購 管理與其他無線通信等的小型移動機器。 6 201138410 於第1圖中’該行動終端裳置10係於細長矩形狀^置 本體12之前面，具有輸出選項單畫面或所記憶資料的液 f器(LCD)等之顯^14、將資料進行操作輸人作為資料 輪入部之輸入鍵16及選擇鈕18，且於壯、 具有處理輸入自輸入鍵16之資料等^置本體12之内部， (運算部. 料未^之資料處理部 另，雖然於本實施形態之行動終端裝置iq中並 ^=而’亦包括以下規格者，βρ :搭載有作 能 之印表機者。 柯月b 於第2圖中，於行動終端裝置1〇之背面側具有電 L且該電池罩22係堵塞收納電池 叫參照第3圖）。 電池至26的開口部 旋動=池罩22係詳細如後述，然而’藉由將操作旋紐62 疋動插作，電(蝴鱗_叫目物㈣26a裝卸。 於該行動終端裝置1〇搭载有未圖示之掃㈣單元（把 ，取單元)’細咖__品(商^編碼資綠 另_在使_行動終端裝㈣來發送電子郵 二二用輸入鍵16而輸入電話號碼或電子郵件位址 ^ ^错“距離用之無線通信，朝所指定的通信對象 ==料。所發送的資料係自基地台透過電話線路副 線路專而傳送至通信對象。 第3圖係却下電池罩22而自背面 時之外觀圖。 仃動，冬鈿裝置 於本實施形態中，電池20係充電電池，並以可裝卸方 201138410 式收納於電池室26，且該電池室26係形成於裝置本體12之 背面側。該電池室26係藉由電池罩22來閉塞開口部26a，藉 此’可維持防水機能。 開口部26a係裝置本體12之長向（第3圖之γ方向）下方 側的大略一半會開口。又，於裝置本體12之長向的大略中 央，於開口部26a之上方側形成鎖定機構收納部28。 該鎖定機構收納部28係於其與裝置本體12之背面的交 接處形成落差’該落差係相當於覆蓋鎖定機構收納部28的 電池罩22之厚度部分。依此，若於電池室％之開口部如農 设電池軍22’職置本體以背面會構成平滑面(倾第2圖）。 又，鎖定機構收納部28係於裝置本體12之寬度方向（第 3圖之X方向）的大略中央具有操作旋鈕收納部32。再者，於 該鎖定機構收納部28之寬度方向的左右端側，朝裝置本體 12之長向（第3圖之γ方向）下方設置鎖鎖34、鎖銷％，且後 述鎖定機構60之槓射61針合於該鎖賴、鎖銷^。 又’於電池室26之開口部26a下方（第3圖之γ方向之下 方）的左右端部，爪安裝部36、爪安裳部37會切口。電池罩 22之爪4〇、歧(參照第则卡在财安裝部％ 安裝部37並固定^ 又’於電池室26之開口部26a周圍形成薄壁之壁面％， 且後述襯墊48(參照第侧等）純接於該壁㈣ 带 池室26之时性。 第4A圖係自内面側觀看電池罩22時之外觀圖，又 4B圖係自㈣側觀看電池科之其他實施形態(後述)之外 201138410 觀圖。 如第4A圖所示，電池罩22係具有業已積層外側罩22a 與内側罩22B之一體結構。 Λ電池罩22係閉塞電池室26之開口部26a，且對衝擊力 等亦具有預定強度，同時具有防水規格水準明顯之優異防 水機能（例如IS/IEC中的ipx7等級）。 第5Α圖係自内面側觀看外側罩22Α時之外觀圖，又， 第5Β圖係自内面側觀看外側罩時之其他實施形態（後 外觀圖。 ^如第5Α圖所示，外側罩22Α係由合成樹脂等（例如聚石炭 之彈性材料所構成’且於中央具有罩本體U。該外側 罩22A係具有業已形成於長向（第5八圖之γ方向）上方側之 臂導件38及鎖定機構60。 該臂導件38係、直立設置於厚度方向（第认圖之2方 向），且該臂導件38料引作為槓桿構件之槓料Η朝寬产 方向（第5Α圖之X方向）移動。該槓桿㈣係藉由操作旋減 之操作朝寬度方向移動。 圖之Υ方向）下方側的左右 爪41係安裝於前述裝置本 。又，該爪40、爪41係嵌 又，於罩本體23之長向（第5Α 端部形成爪40、爪41。該爪40、 體12之爪安裝部36、爪安裝部37 入爪安裝部36、爪安裝部37，且藉由將較機構6〇鎖定 外側罩22Α(電池罩22)可裝設於裝置本體12。 又，於罩本體23之寬度方向（第5Α圖之χ方向）的左右端 部，直立設置於厚度方向(第5Α圖之ζ方向)内面側之側面肋 201138410 部42、側面肋部43係於長向連續地形成。該側面肋部42、 側面肋部43係形成為沿著電池室26之開口部26a側方之壁 面30 〇 第6A圖係將内側罩22B積層於外側罩22A時之電池罩 22之分解立體圖，又，第68圖係將内側罩積層於外側罩之 内面時的電池罩之其他實施形態（後述)之分解立體圖。 如第6A圖所示，於本實施形態中，内側罩22B包含有： 補強板46 ’係由不同於外側罩22A之材料所構成作為補強構 件者；黏著膠帶44,係設置於該補強板46之外側罩22A側面 作為固定機構者；及襯墊48，係設置於補強板46之與黏著 膠帶44側呈相反之側作為密封構件者。依此，内側罩22B 係藉由黏著膠帶44黏貼、積層於外側罩22A。 黏著膠帶44係使用例如像是雙面膠帶之矩形框狀彈性 材料。該黏著膠帶44係具有以下作用，即：接著外側罩22A 與補強板46者；及對衝擊進行緩衝者。故，黏著膠帶44會 要求接著性與耐衝擊性。又，為了防水，該黏著膠帶44係 具有非滲水性。 補強板46係補強外側罩22A之機械強度，並由具有耐磨 損性及耐衝擊性之金屬板(例如不鏽鋼)所構成。 該補強板46包含有：板本體50，係於中央具有開口 5〇a 者；罩部51，係形成於該板本體5〇之長向（第6A圖之γ方向） 上方側者；左右一對突起56、突起57，係於長向下方側突 出者；及左·右肋部53、肋部54，係形成於板本體5〇之寬 度方向（第6A圖之X方向）的左右端部者。 10 201138410 依此’補強板46之板本體50係補強外側罩22A之罩本體 23，又，補強板46之左.右肋部53 '肋部54係補強外側罩 22A之側面肋部42、側面肋部43。再者，補強板牝之突起％、 突起57係補強外側罩22A之爪40、爪41。另，補強板46之罩 部51係保護鎖定機構6〇。 由於5玄補強板46係具有耐磨損性，因此，即使合成樹 脂製外側罩22A之框部分與其他物體接觸而磨損，亦不會磨 損至比補強板46更内部。故，電池室26不會露出，且可維 持電池室26内部之防水性。 又，由於該補強板46係具有耐衝擊性，因此，即使合 成樹脂製外側罩22A因掉落等而破損，包含補強板46之内側 罩22B亦不會破損。故，電池室％不會露出，且可維持電池 室26内部之防水性。 又，於補強板46之右肋部54之長向上方端，設置有作 為防止變形構件之防止變形配件58，且該防止變形配件58 係略呈L字狀’並於厚度方向（第6A圖之z方向）之内面側突出。 該防止變形配件58係具有以下作用，即：防土鎖定機 構60之槓桿臂61之長向—端側（第6A圖之X方向之右端側） 朝厚度方向(第6A圖之Z方向)之内面側變形。 概塾48係由具有非渗水性之橡膠或合成樹脂所構成。 乂概塾48係作成於中央具有矩形狀開口術之矩形框狀。 另，開口 48a之大小係形成為與補強板私之開口 5〇a同等或 大於該開口 5〇a。 4襯塾4 8係透過未圖示之黏著膠帶或接著劑而黏貼於 201138410 補強板46之一面（與黏著膠帶44呈相對側之面）。依此’外側 罩22A係一體地積層於補強板46及襯墊48。 另，襯墊48係以預定壓按壓於電池室26之開口部26a周 圍之壁面30,藉此，可利用其斥力維持電池室26之防水機能。 又，如前所述，於電池罩22中，内側罩22B之補強板46 之突起56、突起57係相較於外側罩22A之爪40、爪41而於寬 度方向之内側突出。故，該突起56、突起57會掛扣在電池 室26之開口部26a之下端側，並補強掛扣部。 另，於本實施形態中揭示以下内容，即：外側罩22a 與内側罩2 2 B之接著係藉由黏著膠帶4 4來黏貼，藉此進行積 層，然而，並不限於此。 舉例言之，第4B圖係顯示於外側罩22A與内側罩22B間 夹入襯墊91(參照第6B圖）的電池罩22之其他實施形態之外 觀圖。 此係藉由第4B、5B及6B圖來說明。 於第5B圖中，於外侧罩22A之罩本體23之寬度方向（第 5B圖之X方向）的左右端部，直立設置於厚度方向（第5B圖之 Z方向）内面側之側面肋部42、側面肋部43係於長向連續土 形成。 突起82係於厚度方向在大略巾央分別形 在該側面肋部42、側面肋部43之長向兩端稍微靠近中 央，突起81、 數個。 又，於第6B圖中，在業已形成於補強板46之板本咖 之寬度方向（第6B圖之X方向）左右端部的左.右肋部” 12 201138410 °P54上’在長向兩端稍微靠近中央，貫通孔83、貫通孔84 係於厚度方向在大略中央形成複數個。另，藉由前述突起 1犬起82與貫通孔83、貫通孔84 ,構成固定機構。 依此將位於業已直立設置於該外側罩22A之罩本體23 内面側的側面肋部42、側面肋部43上之突起81、突起82， 與升/成於補強板46之左.右肋部53、肋部54的貫通孔以' 貝通孔84肷合’藉此’亦可將外側罩Μ與内側罩2沈作成 :體結構而無須接著。$，貫通孔83、貫通孔料無須特別 貝通’只要是凹部等可與突起8卜突起Μ嵌合之構造即可。 又，於第6B圖中，將大小與黏著膠帶44略呈同等之襯 墊91失入外側罩22八與内側罩22B間。襯墊91之厚度係作成 稍微比外側罩22A與内側罩22B之間隙厚，藉此，在夹入裸 墊91時，亦可藉由襯墊之壓力來密接，且能作成非滲水性。 其次，簡單地說明鎖定機構60。 鎖定機構60係以下機構，即：在將電池罩22配置於電 池室26之開口部26a時，將該電池罩22按壓於裝置本體口側 並鎖定者。 該鎖定機構60包含有：槓桿臂61，係以可移動方式設 置於電池罩22作為槓桿構件者；操作旋鈕62，係操作該櫝 桿臂61作為操作機構者；及裝置本體12之鎖銷μ、鎖銷 35(參照第3圖）。當電池罩22閉塞電池室26之開口部26a時， 槓桿臂61係卡合於裝置本體12之鎖銷34、鎖銷35。 第7圖係槓桿臂61、操作板63及操作旋鈕62之分解立體 圖’第8圖係其組裝圖。 13 201138410 於第7及8圖中，槓桿臂61包含有：框體部65，係具有 W端部65仏呈矩形框狀者；平板祕，係相對於該框體 部65朝第7圖之下方(2方向）具有落差，並呈水平地延伸 者；及第2端部67,係自該平板部的朝圖上方(2方向）具有 些微落差’並呈水平地延伸者。 第1端4 65a及第2端部67係於將電池罩22閉塞於電池 室26之開口部26a時，槓桿f61會朝第7圖之右方向(χ方向) 移動而卡合於鎖銷34、鎖銷35。 於槓桿臂61之平板部66直立設置有操作銷的，另一方 面’於操作板63軸貫軌69 ^作板㈣透過該貫通孔 69而安裝於槓桿臂61之操作細。另，除了貫通孔仍外， 於操作板63㈣成體（圖巾為)貫通錢1作旋紐Q 係使用該貫通孔70來安裝。 又，該槓桿臂61係保持為可相對於電池罩22朝寬度方 向（第5A及6A圖之X方向）移動，然而，槓桿臂心會相對 於電池罩22朝厚度方向（第5A圖之z方向)移動。該損桿臂q 係藉由將安裝於操作板63之操作旋鈕62旋動而朝長向移動。 第9圖係自内面側觀看電池罩22時之平面圖。 於第9圖中，若將操作旋鈕62朝箭頭記號B方向旋動操 作，則槓桿臂61會朝箭頭記號C方向移動，藉此，槓桿臂w 之第1端部65a及第2端部67會卡合於鎖銷34、鎖銷乃（參照 第3圖）。 第10A及10B圖係顯示槓桿臂61之動作狀態圖。 第10A圖係顯示槓桿臂61相對於鎖銷34、鎖銷乃(參照 201138410 第3圖）之解除鎖定狀態，第1〇B圖係顯示槓桿臂61相對於鎖 銷34、鎖銷35之鎖定狀態。 如第10A圖所示，於槓桿臂61之解除鎖定狀態下，槓桿 臂61與鎖銷34、鎖銷35並未卡合。 即，於該狀態下，槓桿臂61之第丨端部65a及第2端部67 與鎖銷34、鎖銷35會構成於長向（X方向）分離之位置關係。 其次，如第10B圖所示，若將操作旋鈕62旋動操作，則 才貝才干臂61會透過操作板63及操作銷68而朝長向（箭頭記號c 方向）移動。 另’該操作係實際上所在使電池罩22覆蓋電池室26之 開口部26a ’且於該狀態下將操作旋鈕62收納於第3圖之操 作旋紐收納部32來進行。 依此，槓桿臂61會朝長向（X方向）移動，且其第1端部 65a及第2端部67之上面（第10A圖之A面、A’面）會進入鎖銷 34、鎖銷35之下側(Z方向）而卡合，藉此，槓桿臂61與鎖銷 34、鎖銷35係構成鎖定狀態。 藉由該卡合，第4A圖所示之電池罩22係閉塞於電池室 26之開口部26a。另，第1端部65a及第2端部67之前端宜形 成為錐形面’以輕易地卡合於鎖銷34、鎖銷35。 又’第1端部65a及第2端部67之上面（第10A圖之A面、 A’面）係相較於鎖銷34、鎖銷35之最下面而稍微位於上方（第 10A圖之Z方向）。藉此，於第1端部65a及第2端部67卡合於 鎖銷34 '鎖銷35之狀態下，槓桿臂61會稍微朝下方（第1〇八 圖之Z方向）移動。 15 201138410 藉由該損桿臂61朝下方（第10A圖之Z方向）之移動，電 池罩22係按Μ於裝置本體12側，藉此，襯㈣會按壓於電 池室26周圍之壁面30 ’並維持防水性能。 另，於本實施形態中，鎖銷34、鎖銷35係使用截面圓 形之金屬棒，然而，並不限於此，舉例言之，亦可作成截 面二角形或橢圓形。藉此’當槓桿臂61卡合於鎖銷34、鎖 銷35時，槓桿臂61可藉由鎖銷34、鎖銷35之角部輕易地朝 下方移動。 依此’於本貫施形態中’藉由轉動電池罩22中央之操 作；k鈕62，使槓桿臂61朝長向移動，並使該槓桿臂61卡合 於裝置本體12之寬度方向左右端的2根鎖銷34、鎖銷35。 此時，於本實施形態中，槓桿臂61並未固定於裝置本 體12或電池罩22而構成可移動，因此，即使誤讓裝置本體 12掉洛等’衝擊亦*會直接傳送至浦扣，&，横桿臂 61不會變形而可保持鎖定狀態。依此，由於電池罩22不會 脫離，因此可維持電池室26之防水機能。 又，操作操作旋鈕62而槓桿臂61移動，且於槓桿臂61 卡。於裝置本體12之寬度方向左右側的2根鎖銷34、鎖銷35 之狀態下，槓桿臂61之端部（第2端部67)係由形成於補強板 6之防止變形配件58來覆蓋’藉此，即使長期使用，亦可 防止槓桿臂61之第2端部67變形(例如朝裝置本體⑵則變曲 “另’於本實施形態中，說明藉由防止變形配件58來覆 蓋横桿臂61之一端側（第2端部67)之情形，而，並不限於 此舉例吕之，亦可作成藉由相同之配件來覆蓋槓桿臂61 16 201138410 之兩端側。 又，在將電池罩22裝設於裝置本體12時，係藉由電池 罩22來閉塞電池室26之開口部26a，且使該電池罩22朝長向 (第3圖之Y方向）下方滑動。依此’在將電池罩22之爪40、 爪41嵌入爪安裝部36、爪安裝部37後’操作操作旋紐62。 藉此，電池罩22係閉塞電池室26之開口部26a並鎖定。 另，此時’由於補強板46之突起56、突起57亦同時地 嵌入開口部26a之壁面30，因此可補強電池罩22之裝設強度。 又，裝置本體12係藉由合成樹脂等之彈性材料所構 成，且電池罩22之襯塾48係抵接、按壓於電池室％周圍之 壁面30，因此’開口部26a會利用襯墊48之斥力，藉由電池 罩22來堵塞且無間隙。 依據本實施形態’由於電池罩22係具有業已積層内側 罩22B與外側罩22A之一體結構，且内側罩22B係具有透過 黏著膠帶44積層於外側罩22A之補強板46及襯墊48,因此， 行動終端裝置1〇可具有耐衝擊性。 又，只要將電池罩22裝設於電池室26之開口部26a並鎖 定，電池罩22之襯墊48就會按壓電池室26周圍之壁面30並 堵塞電池室26之開口部26a且無間隙，因此，可維持電池室 26之防水性。 【圖式簡單說明】 第1圖係自前面側觀看本發明之實施形態的行動終端 裝置之外觀圖。 第2圖係自背面側觀看本發明之實施形態的行動終端 17 201138410 裝置之外觀圖。 第3圖係卸下電池罩而自背面側觀看行動終端裝置之 外觀圖。 第4A圖係自内面側觀看電池罩時之外觀圖。 第4B圖係自内面側觀看電池罩時之其他實施形態之外 觀圖。 第5A圖係自内面側觀看外側罩時之外觀圖。 第5B圖係自内面側觀看外側罩時之其他實施形態之外 觀圖。 第6A圖係將内側罩積層於外側罩之内面時的電池罩之 分解立體圖。 第6B圖係將内側罩積層於外側罩之内面時的電池罩之 其他實施形態之分解立體圖。 第7圖係槓桿臂、操作板及操作旋鈕之分解立體圖。 第8圖係槓桿臂、操作板及操作旋鈕之組裝圖。 第9圖係自内面側觀看電池罩時之平面圖。 第10A圖係顯示槓桿臂之解除鎖定狀態圖。 第10B圖係顯示槓桿臂之鎖定狀態圖。 【主要元件符號說明】 10...行動終端裝置 20…電池 12.. .裝置本體 14.. .顯示部 16.. .輸入鍵 18.. .選擇鈕 22.. .電池罩 22A...外側罩 22B...内側罩 23.. .罩本體 18 201138410 26...電池室 53...左肋部 26a...開口部 54...右肋部 28...鎖定機構收納部 56，57...突起 30...壁面 58...防止變形配件 32...操作旋鈕收納部 60...鎖定機構 34，35...鎖銷 61...槓桿臂 36，37...爪安裝部 62...操作旋鈕 38...臂導件 63...操作板 40，41...爪 65...框體部 42，43…側面肋部 65a...第1端部 44...黏著膠帶 66...平板部 46...補強板 67...第2端部 48，91...襯墊 68...操作銷 48a，50a...開口 69，70，83，84...貫通孔 50...板本體 81，82...突起 51...罩部 19BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal device having a battery cover that blocks a battery chamber in which a battery is housed. BACKGROUND OF THE INVENTION In recent years, particularly in the case of mobile terminal devices used for business, since the amount of power loss is increased by the use of, for example, a scanner device, charging must be periodically exchanged. The battery (for example, 1 time/day), and the battery cover is designed to be detachable by a simple operation. Further, the battery cover must satisfy the following specifications, that is, it can be prevented from being damaged even when the mobile terminal device is dropped, for example, and the water-repellent performance can be maintained. In addition, the waterproof specification of the electronic device including the mobile terminal device is set to the following level of waterproofing, that is, in the protection level of IPx7 in, for example, JIS/IEC (International Electrical Standards Conference), in the temperature range of 15 ° C to 35 ° In C and so on, the lower end of the device has a lm diving from the water surface, and it will not seep even if the test time is 30 minutes. Therefore, the mobile terminal device is preferably as follows: when the cover is closed, the pad pressure necessary for waterproofing can be obtained, and even if the device is accidentally dropped, it is not easily broken 5 and the waterproof performance is not For example, Patent Document 1 discloses a structure of a mobile terminal 201138410 device, which includes a battery, which is housed in a battery storage unit, and a cover. The body is a battery occlusion port; and a gasket that is kept in a sealed state is disposed between the lid body and the battery accommodating port. The gasket is formed in a state of being embedded around the inner side of the lid body, and prevents water from penetrating from the battery receiving opening. Further, in Patent Document 2, in the mobile terminal device, the battery cover includes a cover body which is formed by an elastic material to form an inner portion facing the battery, and is formed by sheet metal to form an outer portion; and a cover. It covers the cover; it also 'doubles the so-called battery cover. Further, the shaft attached to the lid is attached to the bearing portion on the apparatus main body side, and the lid system is opened and closed in a lateral manner. Further, the cover has a claw and a lock lever that are hooked on the body side of the apparatus. However, in Patent Document 1, since the cover system is hooked to the outer casing of the apparatus body by the hook, when the apparatus body is accidentally dropped or the like, the hook is broken or peeled off due to the impact, and is disposed on the cover body. _ Off the waterproof performance of the lining of the lining. Further, in Patent Document 2, the cover body and the cover are not integrally formed but are formed of different shapes. Therefore, when the device body is accidentally dropped or the like, the claws of the cover may be broken (4) and broken. In the case of 15], the bearing portion on the main body side of the device supporting the cover body may be damaged. Furthermore, if the cover and the cover are broken, the waterproof performance of the battery cover may be impaired. The present invention provides a mobile terminal device, which is disclosed in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. 2008-130519. The mobile terminal device can prevent the battery cover from being damaged even when the device body is subjected to the impact force, and has excellent waterproof function. The present invention is a mobile terminal device having a battery cover, and the battery cover is formed in a blockage. The device body is configured to accommodate an opening of a battery chamber of the battery, wherein the battery cover has a structure in which an outer cover and an inner cover are laminated, and the inner cover has a transmission fixing mechanism laminated on the outer cover. The reinforcing member and the sealing member which are different from the material of the outer cover. According to the embodiment, the inner cover has a reinforcing member and a sealing member which are laminated on the outer cover and are made of a material different from the outer cover. Component, therefore, even if the outer cover is subjected to impact due to dropping or the like Damaged, it can also be protected by the reinforcing member, and the inside of the battery compartment is not exposed. Moreover, the waterproof function between the battery compartment and the battery cover can be maintained by the sealing member. Figure 1 is a simple view from the front side The external view of the mobile terminal device according to the embodiment of the present invention is seen from the back side. Fig. 3 is a view showing the mobile terminal from the back side while removing the battery cover. Fig. 4A is an external view of the battery cover when viewed from the inner surface side. Fig. 4B is an external view of another embodiment when the battery cover is viewed from the inner surface side. Fig. 5A is an outer cover view from the inner surface side. Fig. 5A is an external perspective view of another embodiment when the outer cover is viewed from the inner surface side. Fig. 6A is an exploded perspective view of the battery cover when the inner cover is laminated on the inner surface of the outer cover. Fig. 6B An exploded perspective view of another embodiment of the battery cover when the inner cover is laminated on the inner surface of the outer cover. Fig. 7 is an exploded perspective view of the lever arm, the operation panel and the operation knob. The assembly diagram of the lever arm, the operation panel and the operation knob. Fig. 9 is a plan view when the battery cover is viewed from the inner surface side. Fig. 10A shows the unlocked state diagram of the lever arm. Fig. 10B shows the lock state diagram of the lever arm. [Embodiment 3] Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is an external view of a mobile terminal device according to an embodiment of the present invention viewed from the front side, and Fig. 2 is a view Appearance view from the back side. The mobile terminal device is known as a HHT (Hand Held Terminal), and can carry and manage small mobile devices such as sales management, inventory management or procurement management, and other wireless communication. 6 201138410 In Figure 1, the mobile terminal 10 is placed in front of the slender rectangular body 12, and has a liquid output device (LCD) that outputs a menu screen or memory data. The data is input and input as the input key 16 and the selection button 18 of the data wheeling unit, and is in the interior of the main body 12, and has the processing input from the input key 16 (the operation unit. Another data processing unit, in the present embodiment, although the operation of the terminal apparatus and iq ^ = and 'specifications by also comprising, βρ: those equipped with a printer for the can. In the second diagram, Ke Yueb has electric power L on the back side of the mobile terminal device 1 and the battery cover 22 is closed to accommodate the battery. Refer to Fig. 3). The opening of the battery to the opening of the battery is as follows. The pool cover 22 is described later in detail. However, by inserting the operation knob 62, the battery is attached to and detached from the target device (four) 26a. There is a sweep (four) unit (put, take the unit) that is not shown. 'fine coffee __ product (business ^ code capital green another _ in the _ mobile terminal installed (four) to send e-mail 22 with the input button 16 and enter the phone number or E-mail address ^ ^ wrong "distance wireless communication, the designated communication object = = material. The transmitted data is transmitted from the base station to the communication object through the telephone line sub-line. The third picture is the battery In the present embodiment, the battery 20 is a rechargeable battery, and is housed in the battery compartment 26 in a detachable manner 201138410, and the battery compartment 26 is formed in the apparatus. The back side of the main body 12. The battery compartment 26 closes the opening 26a by the battery cover 22, thereby maintaining the waterproof function. The opening 26a is the lower side of the apparatus body 12 (the γ direction of Fig. 3). The roughly half will open. In addition, the length of the device body 12 In the approximate center, the lock mechanism accommodating portion 28 is formed on the upper side of the opening portion 26a. The lock mechanism accommodating portion 28 is formed to have a drop at the intersection with the back surface of the apparatus main body 12. The drop corresponds to the cover lock mechanism accommodating portion 28. In this case, if the opening of the battery compartment is as shown in the opening of the battery compartment, the rear surface of the battery compartment 22's body will form a smooth surface (pitch 2). The operation knob housing portion 32 is provided at a substantially central portion in the width direction of the apparatus main body 12 (the X direction in FIG. 3). Further, the left and right end sides of the lock mechanism housing portion 28 in the width direction are oriented toward the longitudinal direction of the apparatus body 12. The lock lock 34 and the lock pin % are provided below the γ direction (Fig. 3), and the lever 61 of the lock mechanism 60, which will be described later, is engaged with the lock and the lock pin 2. It is also below the opening 26a of the battery compartment 26 ( In the left and right end portions of the lower side in the γ direction of Fig. 3, the claw attachment portion 36 and the claw-hanging portion 37 are notched. The claws of the battery cover 22 are smashed and disambiguated (refer to the first attachment in the fiscal attachment portion % attachment portion 37). The fixing ^ is formed around the opening portion 26a of the battery chamber 26 The thickness of the wall surface of the thin wall, and the spacer 48 (refer to the first side, etc.) described later is purely connected to the wall (4) with the cell chamber 26. The 4A is an external view when the battery cover 22 is viewed from the inner surface side, and FIG. 4B As shown in Fig. 4A, the battery cover 22 has a structure in which the outer cover 22a and the inner cover 22B are laminated. As shown in Fig. 4A, the battery cover 22 is a structure of the outer cover 22a and the inner cover 22B. The opening portion 26a of the battery chamber 26 is closed, and has a predetermined strength against an impact force or the like, and has an excellent waterproof function (e.g., an ipx7 rating in IS/IEC) in which the waterproof specification level is apparent. The fifth drawing shows the outer side cover from the inner surface side. The appearance of the 22nd hour, and the fifth drawing is another embodiment when the outer cover is viewed from the inner side (the rear view). ^ As shown in Fig. 5, the outer cover 22 is made of synthetic resin or the like (for example, an elastic material made of polycharcoal) and has a cover body U at the center. The outer cover 22A has a long direction (Fig. 5 The arm guide 38 and the locking mechanism 60 on the upper side in the γ direction. The arm guide 38 is erected in the thickness direction (the direction of the second drawing), and the arm guide 38 is used as the lever of the lever member. The material moves toward the wide production direction (X direction in Fig. 5). The lever (4) is moved in the width direction by the operation of the operation of the reduction. The left and right claws 41 on the lower side of the figure are attached to the apparatus. Further, the claws 40 and 41 are fitted to each other, and the claws 40 and the claws 41 are formed at the fifth end portion of the cover body 23. The claws 40, the claw attachment portions 36 of the body 12, and the claw attachment portions 37 are inserted into the claws. The portion 36 and the claw attachment portion 37 are attached to the apparatus main body 12 by locking the outer cover 6 Α (the battery cover 22). Further, in the width direction of the cover main body 23 (the direction after the fifth drawing) The left and right end portions are erected in the thickness direction (the direction after the fifth drawing), and the side ribs 201138410 42 and the side ribs 43 are continuously formed in the longitudinal direction. The side ribs 42 and the side ribs 43 are formed. The wall cover 30 is formed along the side of the opening portion 26a of the battery chamber 26, and the exploded view of the battery cover 22 when the inner cover 22B is laminated on the outer cover 22A is shown in Fig. 6A. An exploded perspective view of another embodiment (described later) of the battery cover in the inner surface of the outer cover. As shown in Fig. 6A, in the present embodiment, the inner cover 22B includes: the reinforcing plate 46' is different from the outer cover 22A. The material is formed as a reinforcing member; the adhesive tape 44 is disposed outside the reinforcing plate 46 The side cover 22A has a side surface as a fixing mechanism; and the spacer 48 is provided on the side opposite to the adhesive tape 44 side of the reinforcing plate 46 as a sealing member. Accordingly, the inner cover 22B is adhered and laminated by the adhesive tape 44. The outer cover 22A. The adhesive tape 44 is made of, for example, a rectangular frame-shaped elastic material such as a double-sided tape. The adhesive tape 44 has the following functions: the outer cover 22A and the reinforcing plate 46; and the shock absorber. Therefore, the adhesive tape 44 may require adhesiveness and impact resistance. Moreover, the adhesive tape 44 has non-water permeability for waterproofing. The reinforcing plate 46 is for reinforcing the mechanical strength of the outer cover 22A and is resistant to abrasion and The impact plate is made of a metal plate (for example, stainless steel). The reinforcing plate 46 includes a plate body 50 having an opening 5〇a in the center, and a cover portion 51 formed on the longitudinal direction of the plate body 5 ( The γ direction in Fig. 6A) is the upper side; the pair of right and left protrusions 56 and 57 are attached to the lower side, and the left and right ribs 53 and ribs 54 are formed in the width of the plate body 5〇. Direction (X direction in Figure 6A) 10 201138410 According to this, the plate body 50 of the reinforcing plate 46 is a cover body 23 for reinforcing the outer cover 22A, and the left and right ribs 53' of the reinforcing plate 46 are ribs 54 for reinforcing the side of the outer cover 22A. The rib portion 42 and the side rib portion 43. Further, the protrusions % of the reinforcing plate 、 and the protrusions 57 reinforce the claws 40 and the claws 41 of the outer cover 22A. Further, the cover portion 51 of the reinforcing plate 46 protects the locking mechanism 6 〇. Since the frame portion of the synthetic resin outer cover 22A is worn and comes into contact with other objects, it does not wear to the inside of the reinforcing plate 46. Therefore, the battery chamber 26 is not exposed, and the waterproofness of the inside of the battery chamber 26 can be maintained. Further, since the reinforcing plate 46 has impact resistance, even if the synthetic resin outer cover 22A is broken due to dropping or the like, the inner cover 22B including the reinforcing plate 46 is not damaged. Therefore, the battery compartment % is not exposed, and the waterproofness inside the battery compartment 26 can be maintained. Further, at the upper end of the right rib portion 54 of the reinforcing plate 46, a deformation preventing member 58 as a deformation preventing member is provided, and the deformation preventing fitting 58 is slightly L-shaped and is in the thickness direction (Fig. 6A). The inner side of the z-direction) protrudes. The deformation preventing fitting 58 has a function of the longitudinal end side of the lever arm 61 of the anti-soil locking mechanism 60 (the right end side in the X direction of FIG. 6A) toward the thickness direction (the Z direction of FIG. 6A). The inner side is deformed. The outline 48 is composed of a non-permeable rubber or synthetic resin. The 乂 塾 48 series is formed in a rectangular frame shape having a rectangular opening in the center. Further, the opening 48a is formed to be equal to or larger than the opening 5〇a of the reinforcing plate. 4 The lining 4 8 is adhered to one side of the 201138410 reinforcing plate 46 (the side opposite to the adhesive tape 44) by an adhesive tape or an adhesive (not shown). Accordingly, the outer cover 22A is integrally laminated to the reinforcing plate 46 and the spacer 48. Further, the spacer 48 is pressed against the wall surface 30 around the opening portion 26a of the battery chamber 26 by a predetermined pressure, whereby the waterproof function of the battery chamber 26 can be maintained by the repulsive force. Further, as described above, in the battery cover 22, the projections 56 and 57 of the reinforcing plate 46 of the inner cover 22B project inward in the width direction from the claws 40 and the claws 41 of the outer cover 22A. Therefore, the projection 56 and the projection 57 are hooked on the lower end side of the opening portion 26a of the battery chamber 26, and the hook portion is reinforced. Further, in the present embodiment, the outer cover 22a and the inner cover 2 2 B are adhered to each other by the adhesive tape 44, thereby being laminated. However, the present invention is not limited thereto. For example, Fig. 4B is a view showing another embodiment of the battery cover 22 in which the spacer 91 (see Fig. 6B) is sandwiched between the outer cover 22A and the inner cover 22B. This is illustrated by Figures 4B, 5B and 6B. In the fifth and fourth embodiments, the left and right end portions of the cover main body 23 in the width direction (X direction of FIG. 5B) are erected in the thickness direction (Z direction in FIG. 5B) on the inner surface side side rib portion 42. The side ribs 43 are formed by long continuous soil. The projections 82 are formed in the thickness direction in the center of the large ridges, and the longitudinal ribs 42 and the side ribs 43 are slightly closer to the center, and the projections 81 are several. Further, in Fig. 6B, the left and right ribs are formed on the left and right ends of the width direction of the board (the X direction of Fig. 6B) of the reinforcing plate 46" 12 201138410 ° P54 'in the long direction two The end portion is slightly closer to the center, and the through hole 83 and the through hole 84 are formed in a plurality in the center in the thickness direction. Further, the protrusion 1 and the through hole 83 and the through hole 84 constitute a fixing mechanism. The side ribs 42 on the inner surface side of the cover body 23 of the outer side cover 22A, the protrusions 81 on the side ribs 43, the protrusions 82, and the left and right ribs 53 and ribs which are raised/formed on the reinforcing plate 46. The through hole of 54 can be formed by the 'beton hole 84', thereby allowing the outer cover and the inner cover 2 to be formed into a body structure without having to be followed. $, the through hole 83 and the through hole do not need special Betong' It is sufficient that the recessed portion or the like can be fitted to the projections 8 and the projections. Further, in the sixth drawing, the spacer 91 having a size equal to that of the adhesive tape 44 is lost between the outer cover 22 and the inner cover 22B. The thickness of the spacer 91 is made slightly thicker than the gap between the outer cover 22A and the inner cover 22B, thereby sandwiching the bare When the pad 91 is used, it can be closely adhered by the pressure of the spacer, and can be made non-permeable. Next, the locking mechanism 60 will be briefly described. The locking mechanism 60 is a mechanism in which the battery cover 22 is disposed in the battery compartment 26 When the opening portion 26a is opened, the battery cover 22 is pressed against the device body port side and locked. The lock mechanism 60 includes a lever arm 61 that is movably provided to the battery cover 22 as a lever member; and the operation knob 62 The mast arm 61 is operated as an operating mechanism; and the lock pin μ and the lock pin 35 of the apparatus main body 12 (refer to Fig. 3). When the battery cover 22 closes the opening portion 26a of the battery chamber 26, the lever arm 61 is attached. The locking pin 34 and the locking pin 35 of the device body 12 are engaged. Fig. 7 is an exploded perspective view of the lever arm 61, the operating plate 63 and the operating knob 62. Fig. 8 is an assembly diagram thereof. 13 201138410 at 7 and 8 In the middle, the lever arm 61 includes a frame portion 65 having a W-shaped end portion 65 仏 in a rectangular frame shape, and a flat plate portion having a drop toward the lower side (two directions) of the seventh frame with respect to the frame body portion 65. And extending horizontally; and the second end portion 67 is on the map from the flat portion (2 directions) having a slight drop 'and extending horizontally. The first end 4 65a and the second end 67 are closed when the battery cover 22 is closed in the opening portion 26a of the battery chamber 26, and the lever f61 is directed to FIG. The right direction (χ direction) moves and engages with the lock pin 34 and the lock pin 35. The flat plate portion 66 of the lever arm 61 is erected with the operation pin, and the other side of the operation plate 63 is the guide rail 69. (4) The operation of attaching to the lever arm 61 through the through hole 69 is fine. Further, in addition to the through hole, the operation plate 63 (four) is formed into a body (the towel) is inserted into the coin 1 as a knob Q, and the through hole 70 is used for mounting. . Further, the lever arm 61 is held to be movable in the width direction (X direction of the fifth and sixth A-pictures) with respect to the battery cover 22, however, the lever arm center is oriented in the thickness direction with respect to the battery cover 22 (Fig. 5A) Direction) move. The damper arm q is moved in the longitudinal direction by rotating the operation knob 62 attached to the operation panel 63. Fig. 9 is a plan view showing the battery cover 22 viewed from the inner surface side. In the ninth diagram, when the operation knob 62 is rotated in the direction of the arrow mark B, the lever arm 61 moves in the direction of the arrow mark C, whereby the first end portion 65a and the second end portion 67 of the lever arm w are opened. It will be engaged with the lock pin 34 and the lock pin (see Fig. 3). Figs. 10A and 10B are views showing the operation state of the lever arm 61. Fig. 10A shows the unlocked state of the lever arm 61 with respect to the lock pin 34 and the lock pin (refer to Fig. 3,384, Fig. 3), and Fig. 1B shows the lock of the lever arm 61 with respect to the lock pin 34 and the lock pin 35. status. As shown in Fig. 10A, in the unlocked state of the lever arm 61, the lever arm 61 is not engaged with the lock pin 34 and the lock pin 35. In other words, in this state, the second end portion 65a and the second end portion 67 of the lever arm 61 are formed in a positional relationship in which the lock pin 34 and the lock pin 35 are separated in the longitudinal direction (X direction). Next, as shown in Fig. 10B, when the operation knob 62 is rotated, the robot arm 61 is moved in the long direction (arrow direction c direction) through the operation plate 63 and the operation pin 68. In addition, the operation is performed by the battery cover 22 covering the opening portion 26a' of the battery chamber 26, and the operation knob 62 is housed in the operation knob housing portion 32 of Fig. 3 in this state. Accordingly, the lever arm 61 moves in the long direction (X direction), and the upper end of the first end portion 65a and the second end portion 67 (the A side and the A' side of the 10A plane) enter the lock pin 34 and the lock. The pin 35 is engaged with the lower side (Z direction), whereby the lever arm 61, the lock pin 34, and the lock pin 35 constitute a locked state. By this engagement, the battery cover 22 shown in Fig. 4A is closed to the opening portion 26a of the battery chamber 26. Further, the first end portion 65a and the front end of the second end portion 67 are preferably formed into a tapered surface to be easily engaged with the lock pin 34 and the lock pin 35. Further, the upper surface of the first end portion 65a and the second end portion 67 (the A surface and the A' surface of the 10A diagram) are slightly above the lock pin 34 and the lowermost side of the lock pin 35 (Fig. 10A). Z direction). As a result, in a state where the first end portion 65a and the second end portion 67 are engaged with the lock pin 34' lock pin 35, the lever arm 61 moves slightly downward (in the Z direction of the first drawing). 15 201138410 By the movement of the rod arm 61 downward (Z direction of FIG. 10A), the battery cover 22 is pressed against the apparatus body 12 side, whereby the liner (4) is pressed against the wall surface 30' around the battery chamber 26. And maintain waterproof performance. Further, in the present embodiment, the lock pin 34 and the lock pin 35 are formed of a metal bar having a circular cross section. However, the present invention is not limited thereto, and may be, for example, a cross-sectional shape or an elliptical shape. Thereby, when the lever arm 61 is engaged with the lock pin 34 and the lock pin 35, the lever arm 61 can be easily moved downward by the corners of the lock pin 34 and the lock pin 35. According to this, in the present embodiment, by rotating the center of the battery cover 22, the k button 62 moves the lever arm 61 in the longitudinal direction, and the lever arm 61 is engaged with the left and right ends of the width direction of the apparatus body 12. 2 lock pins 34 and lock pins 35. In this case, in the present embodiment, the lever arm 61 is not fixed to the apparatus body 12 or the battery cover 22, and is configured to be movable. Therefore, even if the device body 12 is accidentally dropped, the impact is directly transmitted to the PU button. & the crossbar arm 61 does not deform and remains locked. Accordingly, since the battery cover 22 does not come off, the waterproof function of the battery compartment 26 can be maintained. Further, the operation knob 62 is operated and the lever arm 61 is moved, and is engaged with the lever arm 61. In the state of the two lock pins 34 and the lock pin 35 on the right and left sides in the width direction of the apparatus main body 12, the end portion (second end portion 67) of the lever arm 61 is covered by the deformation preventing fitting 58 formed on the reinforcing plate 6. Therefore, even if it is used for a long period of time, the second end portion 67 of the lever arm 61 can be prevented from being deformed (for example, the device body (2) is changed "other" in the present embodiment, and the crossbar is covered by the deformation preventing member 58. The case of one end side (second end portion 67) of the arm 61 is not limited to this example, and it is also possible to cover both ends of the lever arm 61 16 201138410 by the same fitting. When the cover 22 is attached to the apparatus main body 12, the opening 22a of the battery chamber 26 is closed by the battery cover 22, and the battery cover 22 is slid downward in the longitudinal direction (the Y direction of Fig. 3). After the claws 40 and 41 of the battery cover 22 are fitted into the claw attachment portion 36 and the claw attachment portion 37, the operation knob 62 is operated. Thereby, the battery cover 22 closes the opening portion 26a of the battery chamber 26 and locks it. 'Because the protrusion 56 and the protrusion 57 of the reinforcing plate 46 are simultaneously fitted into the wall surface 30 of the opening portion 26a, The strength of the battery cover 22 is set. The device body 12 is made of an elastic material such as synthetic resin, and the lining 48 of the battery cover 22 abuts against and presses against the wall 30 around the battery compartment. The opening portion 26a is blocked by the battery cover 22 by the repulsive force of the spacer 48, and has no gap. According to the present embodiment, the battery cover 22 has a structure in which the inner cover 22B and the outer cover 22A are laminated, and the inner cover 22B Since the reinforcing plate 46 and the spacer 48 which are laminated on the outer cover 22A through the adhesive tape 44 are provided, the mobile terminal device 1 can have impact resistance. Further, the battery cover 22 is attached to the opening 26a of the battery chamber 26. When locked, the gasket 48 of the battery cover 22 presses the wall surface 30 around the battery chamber 26 and blocks the opening portion 26a of the battery chamber 26 without gaps, thereby maintaining the waterproofness of the battery chamber 26. [Simplified explanation] Fig. 1 is an external view of a mobile terminal device according to an embodiment of the present invention viewed from a front side. Fig. 2 is an external view of a mobile terminal 17 according to an embodiment of the present invention viewed from the back side. The external view of the mobile terminal device is viewed from the back side. Fig. 4A is an external view of the battery cover when viewed from the inner surface side. Fig. 4B is an external view of another embodiment when the battery cover is viewed from the inner surface side. 5A is an external view when the outer cover is viewed from the inner surface side. Fig. 5B is an external view of another embodiment when the outer cover is viewed from the inner surface side. Fig. 6A is a battery cover when the inner cover is laminated on the inner surface of the outer cover. Fig. 6B is an exploded perspective view showing another embodiment of the battery cover when the inner cover is laminated on the inner surface of the outer cover. Fig. 7 is an exploded perspective view of the lever arm, the operation panel, and the operation knob. Figure 8 is an assembled view of the lever arm, the operating panel and the operating knob. Figure 9 is a plan view of the battery cover viewed from the inner side. Fig. 10A is a diagram showing the unlocked state of the lever arm. Figure 10B shows a locked state diagram of the lever arm. [Description of main component symbols] 10... Mobile terminal device 20: Battery 12: Device body 14.. Display portion 16. Input button 18.. Select button 22.. Battery cover 22A... Outer cover 22B...Inside cover 23: Cover body 18 201138410 26... Battery chamber 53...Left rib 26a... Opening 54...Right rib 28...Locking mechanism accommodating part 56, 57... protrusion 30... wall surface 58... deformation preventing fitting 32... operating knob housing portion 60... locking mechanism 34, 35... locking pin 61... lever arm 36, 37 ...claw mounting portion 62...operation knob 38...arm guide 63...operation panel 40, 41...claw 65...frame portion 42,43...side rib 65a... First end portion 44...adhesive tape 66...flat plate portion 46...reinforcing plate 67...second end portion 48,91...pad 68...operation pin 48a, 50a... Openings 69, 70, 83, 84... through holes 50... plate bodies 81, 82... protrusions 51... cover portions 19