1356693 九、發明說明 【發明所屬之技術領域】 本發明，係關於設置在醫院等之醫療設施及看護設施 等所使用的病患搬運用之擔架或擔架k等之防止跌落用之 柵欄，尤其，關於可將栅欄旋轉而使其退避於較床面下 方，而使對於床面可移乘病患之醫院搬運用擔架等之柵欄 及其鎖定機構。 【先前技術】 在醫院及看護設施等所使用的擔架之柵欄，係爲了防 止躺臥在擔架的床部上之病患從床部跌落，使從該床部之 側緣立起地設置在床部之側緣。 又，該柵欄，係在立起於擔架的床部之側緣之狀態 下，當病患從擔架移乘至輪椅其他的椅子時，由於會妨礙 其動作，因此必須將柵欄從床部拆卸，或將柵欄朝擔架床 ® 的長邊方向折疊（專利文獻1 )，或以與床部之側緣平行 之方向作爲旋轉軸將栅欄旋轉，使柵欄垂下至較床面下 方，藉以使其從床部之側緣退避。 •在專利文獻1中，係以複數個支柱之上端部支撐構成 柵欄之橫框，而橫框與支柱之上端部係可轉動，藉由全部 的支柱倒下，使橫框就這樣水平狀態下降。接著，在將柵 欄保持於立起狀態之情況時，將可上下動地設置於橫框之 彈性支撐於止動器的下端部之銷構件，從上方插入於設置 在支柱的上端部之承受構件的嵌合孔內，而以支柱之承受 -5- 1356693 構件限制橫框之止動器，並使橫框與支柱不會相對轉動地 將該等卡止，而使支柱不會倒下。止動器，係藉由將設置 在對於橫框可水平移動地設置之雙止動器的下面之突起 部，與設置在止動器的上面之突起部整合，限制使不會朝 上方移動，藉此，不會解除止動器與承受構件之相互限制 狀態。又，在作業者將雙止動器水平地移動之情況時，藉 由雙止動器的止動器之限制（突起部彼此之接觸）會脫 落，而止動器變爲可朝上方移動，因而，止動器之銷構件 會從承受構件的嵌合孔脫離，且橫框對於支柱變爲可相對 轉動。藉此，支柱係可倒下，且藉由全部的支柱倒下，橫 框則水平地下降，並將柵欄折疊。 然而，在該專利文獻1所記載的擔架之柵欄，係藉由 將複數個支柱弄倒，使橫框下降，而將支柱折疊之類型， 因此折疊後之狀態下，也會以些許的高度殘留於擔架之側 緣，而在病患從擔架移乘之際，會造成妨礙。 另一方面，將柵欄繞著與擔架之側緣平行的旋轉軸旋 轉，而在移乘時使從旋轉軸垂下之情況時，在病患從擔架 移乘至輪椅等之際，柵欄並不會造成妨礙。 第9圖及第10圖，係顯示旋轉之類型的柵欄之圖， 第9圖係顯示柵欄在擔架側緣立起而作爲柵欄之使用狀 態，第1 〇圖係顯示欲使柵欄旋轉之動作狀態。在擔架的 床部1之側緣’將其姿勢作爲水平而固定配置有旋轉軸支 撐部3»在柵欄2之右端部，將其長邊方向作爲水平而使 從柵欄2突出地設置有旋轉軸4，將該旋轉軸4插入於旋 -6- 1356693 轉軸支撐部3之水平孔，而將柵欄2可繞著水平軸旋轉地 支撐於旋轉軸支撐部3。在旋轉軸支撐部3,形成有凹部 6，而在柵欄2之右端部設置有突起5。接著，柵欄2,係 該旋轉軸支撐部3的相反側之端部（左端部），藉由同樣 的旋轉軸支撐部可繞著水平軸旋轉地被支撐。更且藉由壓 縮彈簧（未圖示），柵欄2係朝向右方被彈壓。 因此，如第9圖所示，在突起5嵌合於凹部6之狀態 下，柵欄2係不會轉動，保持立起狀態。另一方面，將栅 欄2轉動使其退避之情況，係如第10圖所示，抗拒壓縮 彈簧的彈壓力，將柵欄2滑移至其另一端部（左端部） 側，使突起5從凹部6脫離。在該狀態下，藉由將柵欄2 朝跟前轉動使從旋轉軸支撐部3朝下方垂下，柵欄2就會 移動至較床部1下方，而、可移乘病患。 [專利文獻1]日本特許第3029026號 【發明內容】 [發明所欲解決之問題] 然而’在上述之第9圖及第10圖所示之以往技術 中’由於只將柵欄2朝圖上之左方滑動，就可轉動柵欄 2，因此會有使病患或看護者誤動作之虞。 本發明係有鑑於如此之問題點而完成者，其目的係提 供一種不會誤操作柵欄之立起及退避而可確實地實行之醫 院搬運用擔架等之柵欄及其鎖定機構。 1356693 [用以解決問題之手段] 本發明之醫院搬運用擔架等之柵欄，係沿著床部的側 緣所設置之柵欄，其特徵爲：具有：於兩端部設有旋轉軸 之柵欄本體、及夾介上述旋轉軸可旋轉地支撐上述柵欄本 體之旋轉支撐部、及設置在上述柵欄本體之第1卡合部、 以及設置在上述旋轉支撐部且可與上述第1卡合部卡合之 第2卡合部，上述第2卡合部係具有孔或切口，而上述第 1卡合部係具有：固定在上述柵欄本體之基部、及對於上 述基部可朝一方向往復移動地設置之桿、及設置於該桿且 藉由上述桿之移動可進入上述孔或切口並可從孔或切口脫 離之銷構件、以及可朝與上述一方向交叉之方向往復移動 地設置並在第1位置阻止上述桿之從上述第2卡合部隔離 的方向之移動且在第2位置容許上述桿之從上述第2卡合 部隔離的方向之移動之卡止構件，而在柵欄本體之立起狀 態下上述銷構件係進入上述孔或切口內。 又，具有：將上述銷構件朝向上述第2卡合部彈壓之 彈性構件，爲較理想。 更且，上述第1卡合部，係具有形成於上述柵欄本體 之卡止突起，且在上述卡止構件位於上述第1位置時，上 述卡止突起係將上述卡止構件卡止使其不會朝遠離上述旋 轉軸之方向移動，並限制使上述桿不會朝遠離上述旋轉軸 之方向移動，爲較理想。 本發明之醫院搬運用擔架等之柵欄之鎖定機構，係沿 著床部的側緣所設置，並具有：於兩端部設有旋轉軸之柵 -8- 1356693 欄本體、及夾介上述旋轉軸可旋轉地支撐上述柵欄本體之 旋轉支撐部，之醫院搬運用擔架等之柵欄之鎖定機構，其 特徵爲：具有：設置在上述柵欄本體之第1卡合部、及設 置在上述旋轉支撐部且可與上述第1卡合部卡合之第2卡 合部，上述第2卡合部係具有孔或切□，而上述第1卡合 部係具有：固定在上述柵欄本體之基部、及對於上述基部 可朝一方向往復移動地設置之桿、及設置於該桿且藉由上 述桿之移動可進入上述孔或切口並可從孔或切口脫離之銷 構件、以及可朝與上述一方向交叉之方向往復移動地設置 並在第1位置阻止上述桿之從上述第2卡合部隔離的方向 之移動且在第2位置容許上述桿之從上述第2卡合部隔離 的方向之移動之卡止構件，而在柵欄本體之立起狀態下上 述銷構件係進入上述孔或切口內。 [發明之效果] 根據本發明，在柵欄本體之立起狀態下，第1卡合部 之銷構件會進入第2卡合部之孔或切口內，而第1卡合部 與第2卡合部會卡合，而相互地互相限制，因此柵欄本體 係在床部的側緣保持立起的狀態。 又，將栅欄本體旋轉而使其退避於下方之情況時，將 卡止構件例如朝橫方向（與一方向交叉之方向）移動使其 位於第2位置時，桿就可往上方向（一方向）移動，且設 置在桿之銷構件會從上述孔或切口脫出而上述第1卡合部 與上述第2卡合部之卡合會脫落，而柵欄本體就可繞著.旋 -9- 1356693 轉軸旋轉。藉此，可將柵欄本體朝下方弄倒，使其 上退避。 在本發明中，由於柵欄本體之旋轉，係藉由將 件朝橫方向移動之後，再將桿朝上方移動而變爲可 此即使看護者或病患不小心碰觸到第1及第2卡合 這樣柵欄本體也不會旋轉，可防止因誤操作造成的 體之旋轉。 【實施方式】 [發明之實施形態] 以下，參照所附圖面具體說明關於本發明之 態。第1圖至第3圖係顯示備置有本發明的實施形 欄的擔架之立體圖。擔架10，係藉由升降裝置15 地設置有水平之床部11，又，藉由配置在床部11 1 角落部之車輪14，使可朝任意之方向移動。在該拐 的床部1 1之側緣，設置有柵欄20。該柵欄20 ’係 於兩端部設置有分別朝長邊方向延伸之旋轉軸22、 柵欄本體21、及設置在擔架10的床部Π之側緣近 支旋轉軸22、23而可旋轉地支撐柵欄本體21之旋 部12、13。接著，在柵欄本體21之其中一方的端 轉軸22、旋轉支撐部12側，設置有由第1卡合部 卡合部所構成之鎖定機構30。又，如第4圖所示’ 體21之另一方的端部之旋轉軸23’係被插入於設 轉支撐部13之與床部長邊方向平行的水平孔內’ 從床部 卡止構 能，因 部，只 柵欄本 實施形 態之柵 可升降 的4個 I架10 具有： 23之 旁’樞 轉支撐 部之旋 及第2 柵欄本 置在旋 使旋轉 -10- 1356693 軸23在旋轉支撐部13內可朝其軸方向（長邊方向）移 » 動，藉此，柵欄本體21係可朝床部11之長邊方向作些許 滑動。此外，如後述地其中一方的端部側之旋轉軸22也 被插入於旋轉支撐部12內的水平孔內，使在旋轉支撐部 12內可朝旋轉軸22之長邊方向移動。接著，在另一方的 端部側之旋轉軸23，外嵌有壓縮彈簧16，藉由該壓縮彈 簧16，使柵欄本體21朝其中一方的端部側（旋轉支撐部 1 2側）被彈壓。 接著，在旋轉支撐部12側，設置有鎖定機構30，藉 由該鎖定機構30,柵欄本體21，係可保持第1圖所示之 立起狀態、第2圖所示之水平狀態、第3圖所示之從旋轉 軸垂下之退避狀態。該第1圖所示之立起狀態，係具有： 作爲在醫院、醫療設施及看護設施等使用的病患搬運用之 擔架的防止病患跌落用之側邊柵欄之功能。又，第2圖所 示之水平狀態，係具有：作爲在診察台及搬運用擔架等 中，使用於點滴輸液及處置等的上肢台之功能》更且，第 3圖所示之退避狀態，係在床部上的病患移乘於輪椅等之 際使柵欄不會造成妨礙地使其退避之樣式。如此的3種狀 態，係藉由鎖定機構30，被固定於該狀態。鎖定機構 30，係具有：設置在柵欄本體21之第1卡合部31、及設 置在旋轉支撐部12之第2卡合部32。 第5圖及第6圖，係顯示柵欄處於立起狀態時之鎖定 機構30的構造之圖，（〇爲立體圖，（b)爲正面圖。 第7圖，係顯示將該鎖定機構30之一部分分解後的狀態 -11 - 1356693 之立體圖。再者，第8圖，係顯示柵欄處於水平狀態時之 鎖定機構30的構造之圖，（a)爲立體圖，（b)爲俯視 圖。於設在栅欄本體21之其中一方的端部之安裝部24’ 固定有第1卡合部31之基部41。在該基部41，外嵌有桿 42，桿42係可沿著基部41作些許上下動。接著，在該基 部41內，於其中心部於第5圖至第7圖中設置有朝上下 方向延伸之孔，並在該孔內配置有銷構件43。該基部41 的孔，係朝對於旋轉軸22的中心線垂直地交叉之方向延 伸，銷構件43也使其長邊方向對於旋轉軸22的中心線垂 直地可朝其長邊方向移動地被收納。在銷構件43之中 途，形成有凸緣48，而在該銷構件43，於基部41之上述 孔內，外嵌有壓縮螺旋彈簧45。該壓縮螺旋彈簧45係介 裝於銷構件43的凸緣48與基部41之上述孔的上端部之 間，將銷構件43朝從基部41朝向旋轉軸22側突出之方 向彈壓。該銷構件43，係被固定於桿42。例如，於桿42 穿設孔，且夾介該孔可將銷構件43藉由彈簧銷來固定。 在桿42，形成有凹部50，對於該凹部50，使卡止構 件44朝與旋轉軸22平行之方向嵌入。接著，卡止構件 44，係在該凹部50內，可朝與旋轉軸22平行之方向往復 移動’卡止構件44的安裝部24側之部分，係成爲朝向安 裝部24延伸出之延出部46。又，在安裝部24於與其桿 42相對向之部分，形成有卡止突起47，如第5圖所示， 當卡止構件44位於離安裝部24最近之位置（第1位置） 時，延出部46之上端緣會被卡止於卡止突起47之下端 -12- 1356693 緣，而可阻止卡止構件44及該卡止構件44嵌合的桿42 朝遠離旋轉軸22之方向（圖式例爲上方）移動。 另一方面，在旋轉支撐部12，設置有第2卡合部 32。該第2卡合部32，係具有固定在旋轉支撐部12之圓 筒狀的圓筒部51。在該圓筒部51，於其上端部的寬度方 向之中央，形成有可插入銷構件43之孔52(參照第8 圖），通過該孔52之圓周線上，係成爲銷構件43的前端 ^ 部滑動之滑動部53。此外，在銷構件43之前端部，係塗 覆有滑動阻力變低之物質（例如，鐵氟龍（註冊商 標）），但爲了防止因銷構件43的滑動造成圓筒部51之 局部的磨損之溝槽的形成，滑動部53係形成較其他的部 分些許隆起。又，在圓筒部51，於對於孔52以對於旋轉 軸2 2的中心之中心角旋轉至9 0度跟前側之位置，即圓筒 部51之寬度方向的柵欄本體21側之部分，形成有切口 54 (參照第5圖、第6圖）。 ^ 其次，說明關於如上述所構成之本實施形態的擔架等 之柵欄的動作。如第5圖所示，在柵欄本體21立起之狀 態下，卡止構件44係位於最靠近柵欄本體21的安裝部24 • 側之位置（第1位置），且卡止構件44係將其延出部46 • 卡止於形成在安裝部24之卡止突起47’而無法朝從旋轉 軸22隔離之方向移動。因而，桿42也無法朝從旋轉軸22 隔離之方向移動。因此，設置在桿42之銷構件43，係被 插入於第2卡合部32的圓筒部51之上端孔52(第8圖） 內。藉此，藉由將柵欄本體21側之銷構件43插入於旋轉 -13- 1356693 支撐部12側的圓筒部51之孔52內，柵欄本體21係保持 立起狀態。該銷構件43往孔52內之插入狀態，係只要不 經桿42之移動及卡止構件44之移動就不會脫落，因此被 施以雙層鎖定，可確實地防止因誤操作，鎖定狀態被解除 而柵欄本體就旋轉之事情。 又’由於壓縮螺旋彈簧45將銷構件43朝向旋轉軸22 之中心線側彈壓，因此在使柵欄本體21立起，而形成第1 圖所示的立起狀態之際，銷構件43之前端會滑動於滑動 部53上而接近孔52，更且在與孔52整合時，藉由壓縮螺 旋彈簧45之彈壓力將銷構件43確實地插入孔52內。此 時，操作者不需要將桿42朝遠離旋轉軸22之方向拿起。 因此，只進行使柵欄本體21立起之動作，柵欄本體21係 可確實地被保持於立起狀態。 另一方面，在欲將柵欄本體21作爲第3圖所示的退 避狀態之情況時，如第6圖所示，使卡止構件44朝遠離 安裝部24之方向移動。藉此，由於卡止構件44之延出部 46會藉由卡止突起47從卡止狀態脫落，因此使桿42對於 基部41相對地朝上方移動。藉此，設置在桿42之銷構件 43會從圓筒部51之孔52內脫離，而基部41對於圓筒部 51，變成可相對地移動。之後，只要將桿42放掉，而旋 轉柵欄本體21即可。因此，固定有基部41之柵欄本體 21，對於固定有圓筒部51之旋轉支撐部12變成可旋轉， 使柵欄本體21旋轉，而可作成第3圖所示的退避狀態。 另一方面，欲將柵欄本體21固定成水平狀態而使發 -14- 1356693 揮作爲上肢台的功能之情況，係使卡止構件44移動至第2 位置側，而解除卡止構件44的延出部46之藉由卡止突起 47的卡止狀態。接著，將桿42朝上方拿起，使銷構件43 從孔52脫離，而解除藉由旋轉支撐部12之柵欄本體21 的限制。其次，如第8圖所示，將柵欄本體21朝遠離旋 轉支撐部12之方向，即朝另一端部側之旋轉支撐部13側 按壓。由於柵欄本體21本身，係藉由壓縮螺旋彈簧16, 被朝向旋轉支撐部12側彈壓，因此藉由抗拒該彈壓力而 按壓柵欄本體21，如第8圖所示，基部41與圓筒部51之 相對的關係，則變成朝旋轉軸22之長邊方向位移，且基 部41內的銷構件43之前端，則變成滑動於圓筒部51中 的柵欄本體21側之部分。因此，當柵欄本體21旋轉來到 水平狀態時，銷構件43係藉由壓縮螺旋彈簧45之彈壓力 而進入圓筒部51之切口 54內。在該狀態下，由於桿42 及卡止構件44之移動被阻止，因此不會因誤操作變成鎖 定解除狀態，柵欄本體2 1係可確實地保持於水平狀態。 該情況也是，鎖定之解除，係首先使卡止構件44朝 從安裝部24隔離之方向移動，之後，只要將桿42朝遠離 旋轉軸22之方向移動即可。 此外，由上述之說明明顯地，在將柵欄本體21從立 起狀態移至退避狀態之際，只將卡止構件44移動，並將 桿42朝上方移動而使銷構件43從孔52脫離，就可使柵 欄本體21 —下子旋轉至下端部之退避狀態。即，不必使 柵欄本體21在水平狀態停止，只將栅欄本體21旋轉，就 -15- 1356693 可使其移動至下端部之退避狀態。 又，欲將柵欄本體21固定於水平狀態之情況時，係 在使卡止構件44朝遠離安裝部24之方向移動，並使桿42 朝上方移動之狀態下，只將柵欄本體朝向另一端部側按 壓，之後，只要將柵欄本體21旋轉，即可極爲簡單地將 柵欄設置於水平狀態，並使發揮作爲上肢台之功能。 此外，上述的實施形態中之壓縮螺旋彈簧45，係並不 一定需要。但是，藉由設置該壓縮螺旋彈簧45，可將銷構 件43確實地插入於孔52或切口 54內》 此外，附有上述鎖定機構之柵欄，係並不一定需要設 置在床部之兩側緣，亦可只設置在專門爲了病患移乘利用 之側緣側。又，也並不一定需要將柵欄本身設置在床部之 兩側緣。 又，在上述實施形態中，第2卡合部，係在圓筒部51 的寬度方向之中央具有孔52’且在圓筒部51的安裝部24 側之位置具有切口 54’但亦可在圓筒部51的安裝部24之 相反側的位置設置切口來代替孔5 2 ’又’亦可設置孔來代 替切口 54。 【圖式簡單說明】 第1圖，係顯示備置有本發明的實施形態之柵欄的擔 架之立體圖，且係顯示柵欄立起的狀態之立體圖。 第2圖，係顯示備置有本發明的實施形態之柵欄的擔 架之立體圖，且係顯示柵欄處於水平狀態的狀態之立體 -16- 1356693 圖。 第3圖，係顯示備置有本發明的實施形態之柵欄的擔 架之立體圖，且係顯示柵欄退避於下方的狀態之立體圖。 第4圖，係同上地顯示柵欄的相反側之端部之立體 圖。 第5圖，係顯示柵欄處於立起狀態時之鎖定機構30 的構造（鎖定狀態）之圖，（a)爲立體圖，（b)爲正面 圖。 第6圖，係顯示柵欄處於立起狀態時之鎖定機構30 的構造（鎖定解除狀態）之圖，（a)爲立體圖，（b)爲 正面圖。 第7圖’係顯不將該鎖定機構30之一部分分解後的 狀態之立體圖。 第8圖，係顯示柵欄處於水平狀態時之鎖定機構30 的構造之圖，（a)爲立體圖，（b)爲俯視圖。 第9圖，係顯示以往的鎖定機構（鎖定狀態）之立體 圖。 第10圖，係顯示以往的鎖定機構（鎖定解除狀態） 之立體圖》 【主要元件符號說明】 1 :床部 2 :柵欄 3 :支撐部 -17- 1356693 4 :旋轉軸 5 :突起 6 :凹部 10 :擔架 1 1 :床部 12、13 :旋轉支撐部 14 :車輪 15 :升降裝置 _ 1 6 :壓縮螺旋彈簧 20 :栅欄 21 :柵欄本體 22、23 :旋轉軸 24 :安裝部 30 :鎖定機構 3 1 :第1卡合部 32 :第2卡合部 ® 41 :基部 42 :桿 43 :銷構件 . 44 :卡止構件 45 :螺旋彈簧 46 :延出部 47 :卡止突起 48 :凸緣 -18- 1356693 50 :凹部 51 :圓筒部 52 :孔 5 3 :滑動部 54 :切口1356693 IX. EMBODIMENT OF THE INVENTION [Technical Fields of the Invention] The present invention relates to a fence for preventing a fall, such as a stretcher or a stretcher k for use in a medical facility or a care facility or the like used in a hospital, and the like. A fence and a locking mechanism for a hospital carrying stretcher or the like that can rotate the fence to be retracted from the lower surface of the bed. [Prior Art] The fence of the stretcher used in hospitals and nursing facilities is designed to prevent the patient lying on the bed of the stretcher from falling from the bed and to be placed on the bed from the side edge of the bed. The side edge of the department. Further, in the state in which the fence is raised on the side edge of the bed portion of the stretcher, when the patient moves from the stretcher to the other chair of the wheelchair, the fence is prevented from being moved, so the fence must be detached from the bed. Or folding the fence in the longitudinal direction of the cot bed (Patent Document 1), or rotating the fence as a rotation axis in a direction parallel to the side edge of the bed, and hanging the fence below the bed surface, thereby making it The side edge of the bed is retracted. • In Patent Document 1, a horizontal frame constituting a fence is supported by an upper end portion of a plurality of pillars, and an upper end portion of the horizontal frame and the pillar is rotatable, and all the pillars are fallen down, so that the horizontal frame is lowered in such a horizontal state. . Next, when the fence is held in the upright state, the pin member that is vertically supported by the horizontal frame and elastically supported by the lower end portion of the stopper is inserted from above into the receiving member provided at the upper end portion of the pillar. In the fitting hole, the stopper of the horizontal frame is restrained by the support of the pillar - 5 - 1356693, and the horizontal frame and the pillar are locked without being rotated relative to each other, so that the pillar does not fall down. The stopper is integrated with the protrusion provided on the upper surface of the stopper to be disposed on the lower surface of the double stopper provided to be horizontally movable to the horizontal frame, and is restricted from moving upward. Thereby, the mutually restricted state of the stopper and the receiving member is not released. Further, when the operator moves the double stopper horizontally, the stopper of the double stopper is restricted (the projections come into contact with each other), and the stopper becomes movable upward. Thus, the pin member of the stopper is detached from the fitting hole of the receiving member, and the lateral frame becomes relatively rotatable with respect to the pillar. Thereby, the pillars can be fallen down, and by the collapse of all the pillars, the horizontal frame is lowered horizontally and the fence is folded. However, the fence of the stretcher described in Patent Document 1 is a type in which the pillars are folded by the plurality of pillars, and the pillars are folded, so that the pillars are folded at a slight height. On the side edge of the stretcher, it can be a hindrance when the patient moves from the stretcher. On the other hand, when the fence is rotated about the rotation axis parallel to the side edge of the stretcher and is suspended from the rotation axis during the transfer, the fence does not occur when the patient transfers from the stretcher to the wheelchair. Caused by hindrance. Fig. 9 and Fig. 10 are diagrams showing the type of the fence of the rotation type, and Fig. 9 shows the state in which the fence is raised on the side edge of the stretcher as a fence, and the first figure shows the action state for the fence to be rotated. . In the side edge of the bed portion 1 of the stretcher, the rotating shaft support portion 3 is fixedly disposed at the right end of the fence 2, and the longitudinal direction thereof is horizontal, and the rotating shaft is protruded from the fence 2 4. The rotary shaft 4 is inserted into the horizontal hole of the rotary -6 - 1356693 rotary shaft support portion 3, and the fence 2 is rotatably supported by the rotary shaft support portion 3 about the horizontal axis. A concave portion 6 is formed in the rotating shaft support portion 3, and a projection 5 is provided at the right end portion of the fence 2. Next, the fence 2, which is an end portion (left end portion) on the opposite side of the rotary shaft support portion 3, is rotatably supported around the horizontal axis by the same rotary shaft support portion. Further, by the compression spring (not shown), the fence 2 is biased toward the right. Therefore, as shown in Fig. 9, in a state in which the projection 5 is fitted into the recess 6, the fence 2 does not rotate and is kept in an upright state. On the other hand, when the fence 2 is rotated to be retracted, as shown in Fig. 10, the elastic force of the compression spring is resisted, and the fence 2 is slid to the other end (left end) side, so that the projection 5 is The recess 6 is detached. In this state, by lowering the fence 2 toward the front side and hanging downward from the rotary shaft support portion 3, the fence 2 is moved below the bed portion 1, and the patient can be moved. [Patent Document 1] Japanese Patent No. 3029026 [Disclosure] [Problems to be Solved by the Invention] However, in the prior art shown in the above-described FIGS. 9 and 10, since only the fence 2 is shown on the map When the left side slides, the fence 2 can be turned, so there is a risk of the patient or the caregiver malfunctioning. The present invention has been made in view of such a problem, and an object thereof is to provide a fence and a locking mechanism for a hospital carrying stretcher that can be reliably executed without erroneously operating the fence. 1356693 [Means for Solving the Problem] The fence for a hospital carrying stretcher or the like according to the present invention is a fence provided along a side edge of the bed portion, and is characterized in that: a fence body having a rotating shaft at both end portions And a rotation support portion that rotatably supports the fence body, a first engagement portion provided on the fence body, and a rotation support portion that is engageable with the first engagement portion In the second engaging portion, the second engaging portion has a hole or a slit, and the first engaging portion has a rod that is fixed to the base portion of the fence body and that is reciprocally movable in one direction with respect to the base portion. And a pin member disposed on the rod and movable into the hole or slit by the movement of the rod and detachable from the hole or the slit, and reciprocally movable in a direction crossing the one direction and blocked at the first position a locking member that moves in a direction in which the rod is separated from the second engaging portion and that allows movement of the rod in a direction in which the rod is separated from the second engaging portion at a second position, and stands up on the fence body The state of the pin member into said hole or line incision. Further, it is preferable that the elastic member that biases the pin member toward the second engaging portion is preferable. Further, the first engaging portion has a locking projection formed on the fence main body, and when the locking member is located at the first position, the locking projection locks the locking member to prevent It is preferable to move in a direction away from the above-mentioned rotation axis and to restrict the movement of the rod from the direction away from the rotation axis. The lock mechanism for a fence for a hospital transport stretcher or the like according to the present invention is provided along a side edge of the bed portion, and has a grille shaft -8- 1356693 at the both end portions, and the above-mentioned rotation A lock mechanism for a fence for supporting a rotation support portion of the fence main body, such as a hospital transport stretcher, and the like, comprising: a first engagement portion provided in the fence body; and a rotation support portion And the second engaging portion that is engageable with the first engaging portion, the second engaging portion has a hole or a cut, and the first engaging portion is fixed to a base of the fence body, and a rod disposed to reciprocate in a direction with respect to the base, and a pin member disposed on the rod and movable into the hole or slit by the movement of the rod and detachable from the hole or the slit, and capable of intersecting with the one direction a card that is reciprocally moved to prevent movement of the rod in a direction in which the rod is separated from the second engaging portion at a first position and that allows movement of the rod in a direction in which the rod is separated from the second engaging portion at a second position The member is stopped, and the pin member is inserted into the hole or slit in the upright state of the fence body. [Effect of the Invention] According to the present invention, when the fence body is in the upright state, the pin member of the first engaging portion enters the hole or the slit of the second engaging portion, and the first engaging portion is engaged with the second engaging portion. The parts will be engaged and mutually restrained, so that the fence system is kept upright on the side edges of the bed. Further, when the fence body is rotated to be retracted from the lower side, when the locking member is moved in the lateral direction (the direction intersecting with one direction) to be in the second position, the lever can be moved upward (a When the direction is moved, the pin member provided on the rod is detached from the hole or the slit, and the engagement between the first engaging portion and the second engaging portion is detached, and the fence body can be wound around the -9 - 1356693 Rotary shaft rotation. Thereby, the fence body can be turned down to be retracted. In the present invention, since the rotation of the fence body is performed by moving the member in the lateral direction and then moving the lever upward, the caretaker or the patient accidentally touches the first and second cards. In this way, the fence body does not rotate, and the rotation of the body due to misoperation can be prevented. [Embodiment] [Embodiment of the Invention] Hereinafter, the state of the present invention will be specifically described with reference to the drawings. Fig. 1 to Fig. 3 are perspective views showing a stretcher provided with an embodiment of the present invention. The stretcher 10 is provided with a horizontal bed portion 11 by a lifting device 15, and is moved in an arbitrary direction by a wheel 14 disposed at a corner portion of the bed portion 11 1 . A fence 20 is provided on the side edge of the bed portion 1 of the turn. The fence 20' is rotatably supported at both end portions with a rotating shaft 22 extending in the longitudinal direction, a fence body 21, and a side edge of the bed portion 担 provided on the stretcher 10 near the rotating shafts 22, 23. The knobs 12, 13 of the fence body 21. Next, on one of the end shaft 22 and the rotation support portion 12 of one of the fence bodies 21, a lock mechanism 30 composed of the first engagement portion engagement portion is provided. Further, as shown in Fig. 4, the rotation shaft 23' of the other end of the body 21 is inserted into the horizontal hole parallel to the direction of the side of the bed of the rotation support portion 13' Because of the section, only the fences of the four embodiments of the present embodiment can be raised and lowered. The four I racks 10 have: a side of the 'pivoting support part' and the second side of the fence are rotated to rotate -10- 1356693. The inside of the portion 13 can be moved in the axial direction (longitudinal direction), whereby the fence body 21 can be slightly slid toward the longitudinal direction of the bed portion 11. Further, the rotation shaft 22 on the end side of one of which will be described later is also inserted into the horizontal hole in the rotation support portion 12 so as to be movable in the longitudinal direction of the rotation shaft 22 in the rotation support portion 12. Then, the compression spring 16 is externally fitted to the rotation shaft 23 on the other end side, and the valve body 21 is biased toward the one end side (the rotation support portion 12 side) by the compression spring 16. Next, on the side of the rotation support portion 12, a lock mechanism 30 is provided. With the lock mechanism 30, the fence body 21 can maintain the standing state shown in Fig. 1, the horizontal state shown in Fig. 2, and the third. The retracted state from the rotation axis shown in the figure. The erected state shown in Fig. 1 has a function as a side fence for preventing a patient from falling in a stretcher for use in a hospital, a medical facility, and a nursing facility. In addition, the horizontal state shown in FIG. 2 is a function of the upper limbs used in drip infusion and treatment, such as a medical examination table and a transport stretcher, and the retracted state shown in FIG. When the patient on the bed is transferred to a wheelchair or the like, the fence is prevented from being obstructed. These three states are fixed in this state by the lock mechanism 30. The lock mechanism 30 has a first engagement portion 31 provided in the fence body 21 and a second engagement portion 32 provided on the rotation support portion 12. Fig. 5 and Fig. 6 are views showing the structure of the lock mechanism 30 when the fence is in the upright state, (〇 is a perspective view, and (b) is a front view. Fig. 7 shows a part of the lock mechanism 30. Fig. 8 is a perspective view showing the structure of the lock mechanism 30 when the fence is in a horizontal state, (a) is a perspective view, and (b) is a plan view. The base portion 41 of the first engaging portion 31 is fixed to the mounting portion 24' of one of the end portions of the column main body 21. The rod portion 42 is externally fitted to the base portion 41, and the rod 42 is slightly movable up and down along the base portion 41. Next, in the base portion 41, a hole extending in the vertical direction is provided in the center portion in Fig. 5 to Fig. 7, and a pin member 43 is disposed in the hole. The hole of the base portion 41 is directed toward The center line of the rotating shaft 22 extends in a direction perpendicularly intersecting, and the pin member 43 is also accommodated so that the longitudinal direction thereof is perpendicular to the center line of the rotating shaft 22 so as to be movable in the longitudinal direction thereof. a flange 48, and in the pin member 43, in the hole of the base 41, A compression coil spring 45 is fitted. The compression coil spring 45 is interposed between the flange 48 of the pin member 43 and the upper end portion of the hole of the base portion 41, and protrudes from the base portion 41 toward the rotation shaft 22 side. The pin member 43 is fixed to the rod 42. For example, the rod 42 is bored, and the hole is inserted to fix the pin member 43 by a spring pin. The rod 42 is formed with a recess 50, In the concave portion 50, the locking member 44 is fitted in a direction parallel to the rotation shaft 22. Then, the locking member 44 is fitted in the concave portion 50 so as to be reciprocally movable in a direction parallel to the rotation shaft 22, the locking member 44 The portion on the side of the mounting portion 24 is the extending portion 46 that extends toward the mounting portion 24. Further, the mounting portion 24 is formed with a locking projection 47 at a portion facing the rod 42 as shown in Fig. 5. When the locking member 44 is located at the position closest to the mounting portion 24 (first position), the upper end edge of the extending portion 46 is locked to the edge of the lower end of the locking projection 47 -12 - 1356693, and the locking can be prevented. The member 44 and the rod 42 to which the locking member 44 is fitted are oriented away from the rotating shaft 22 (pattern) On the other hand, the rotation support portion 12 is provided with a second engagement portion 32. The second engagement portion 32 has a cylindrical cylindrical portion 51 fixed to the rotation support portion 12. In the cylindrical portion 51, a hole 52 into which the pin member 43 can be inserted is formed at the center in the width direction of the upper end portion (see Fig. 8), and the front end of the pin member 43 is formed on the circumferential line of the hole 52. In addition, the front end portion of the pin member 43 is coated with a substance having a low sliding resistance (for example, Teflon (registered trademark)), but is prevented from being caused by the sliding of the pin member 43. The formation of the groove of the partial wear of the cylindrical portion 51 causes the sliding portion 53 to form a slight bulge from the other portions. Further, the cylindrical portion 51 is formed at a position where the hole 52 is rotated to a front side with respect to the center angle of the center of the rotation axis 2 2 to the front side of the 90°, that is, the side of the fence body 21 in the width direction of the cylindrical portion 51. There is a slit 54 (refer to Fig. 5 and Fig. 6). Next, the operation of the fence such as the stretcher of the present embodiment configured as described above will be described. As shown in Fig. 5, in a state in which the fence body 21 is erected, the locking member 44 is located closest to the mounting portion 24 side of the fence body 21 (first position), and the locking member 44 is The extension portion 46 is locked to the locking projection 47' formed in the attachment portion 24 and is not movable in the direction of being isolated from the rotation shaft 22. Therefore, the rod 42 cannot be moved in the direction of being isolated from the rotating shaft 22. Therefore, the pin member 43 provided on the rod 42 is inserted into the upper end hole 52 (Fig. 8) of the cylindrical portion 51 of the second engaging portion 32. By this, the pin member 43 on the side of the fence main body 21 is inserted into the hole 52 of the cylindrical portion 51 on the side of the support portion 12 of the rotation -13 - 1356693, and the fence body 21 is kept in an upright state. The insertion state of the pin member 43 into the hole 52 is such that it does not fall off without the movement of the rod 42 and the movement of the locking member 44, so that double-layer locking is applied, and the locking state can be surely prevented from being erroneously operated. The thing that the fence body rotates is released. Further, since the compression coil spring 45 biases the pin member 43 toward the center line side of the rotation shaft 22, the front end of the pin member 43 is formed when the fence body 21 is raised to form the standing state shown in Fig. 1 . The slider member 53 is slid on the sliding portion 53 to approach the hole 52, and when integrated with the hole 52, the pin member 43 is surely inserted into the hole 52 by the elastic pressure of the compression coil spring 45. At this time, the operator does not need to pick up the lever 42 in a direction away from the rotary shaft 22. Therefore, only the operation of raising the fence body 21 is performed, and the fence body 21 can be surely held in the upright state. On the other hand, when the fence main body 21 is to be in the retracted state shown in Fig. 3, as shown in Fig. 6, the locking member 44 is moved in the direction away from the mounting portion 24. Thereby, since the extending portion 46 of the locking member 44 is detached from the locked state by the locking projection 47, the rod 42 is relatively moved upward relative to the base portion 41. Thereby, the pin member 43 provided on the rod 42 is detached from the hole 52 of the cylindrical portion 51, and the base portion 41 is relatively movable with respect to the cylindrical portion 51. Thereafter, the rod body 42 is rotated and the fence body 21 is rotated. Therefore, the fence main body 21 to which the base portion 41 is fixed is rotatable with respect to the rotation support portion 12 to which the cylindrical portion 51 is fixed, and the fence main body 21 is rotated, and the retracted state shown in Fig. 3 can be created. On the other hand, in the case where the fence body 21 is to be fixed in a horizontal state and the hair is used as a function of the upper limb rest, the locking member 44 is moved to the second position side, and the extension of the locking member 44 is released. The engaging portion 46 is in a locked state by the locking projection 47. Next, the rod 42 is lifted upward to disengage the pin member 43 from the hole 52, and the restriction of the fence body 21 by the rotation support portion 12 is released. Next, as shown in Fig. 8, the fence body 21 is pressed away from the rotation support portion 12, that is, toward the rotation support portion 13 side on the other end side. Since the fence body 21 itself is biased toward the rotation support portion 12 by the compression coil spring 16, the fence body 21 is pressed by resisting the spring pressure, as shown in Fig. 8, the base portion 41 and the cylindrical portion 51 are shown. The relative relationship is displaced in the longitudinal direction of the rotating shaft 22, and the front end of the pin member 43 in the base portion 41 is slid to the portion of the cylindrical portion 51 on the side of the fence body 21. Therefore, when the fence body 21 is rotated to the horizontal state, the pin member 43 enters the slit 54 of the cylindrical portion 51 by the elastic pressure of the compression coil spring 45. In this state, since the movement of the rod 42 and the locking member 44 is blocked, the lock main body is not locked by the erroneous operation, and the fence main body 21 can be surely held in the horizontal state. In this case as well, the unlocking of the lock is performed by first moving the locking member 44 in a direction separating from the mounting portion 24, and then moving the rod 42 in a direction away from the rotating shaft 22. Further, as apparent from the above description, when the fence main body 21 is moved from the standing state to the retracted state, only the locking member 44 is moved, and the lever 42 is moved upward to disengage the pin member 43 from the hole 52. The fence body 21 can be rotated to the retracted state of the lower end portion. That is, it is not necessary to stop the fence body 21 in the horizontal state, and only the fence body 21 is rotated, and -15- 1356693 can be moved to the retracted state of the lower end portion. Further, when the fence main body 21 is to be fixed in the horizontal state, the locking member 44 is moved in the direction away from the mounting portion 24, and the rod 42 is moved upward, and only the fence body is directed toward the other end. After the side press, after the fence body 21 is rotated, the fence can be extremely easily placed in a horizontal state, and the function as an upper limb rest can be exerted. Further, the compression coil spring 45 in the above embodiment is not necessarily required. However, by providing the compression coil spring 45, the pin member 43 can be surely inserted into the hole 52 or the slit 54. In addition, the fence attached with the above locking mechanism does not necessarily need to be disposed on both sides of the bed portion. It can also be set only on the side of the side that is specially used for patient transfer. Moreover, it is not necessary to provide the fence itself on both sides of the bed. Further, in the above-described embodiment, the second engaging portion has a hole 52' at the center in the width direction of the cylindrical portion 51 and has a slit 54' at a position on the side of the mounting portion 24 of the cylindrical portion 51. Instead of the hole 5 2 'and', a hole may be provided instead of the slit 54 at a position on the opposite side of the mounting portion 24 of the cylindrical portion 51. [Brief Description of the Drawings] Fig. 1 is a perspective view showing a state in which a fence of a fence according to an embodiment of the present invention is placed, and a state in which a fence is raised. Fig. 2 is a perspective view showing a carrier on which a fence according to an embodiment of the present invention is placed, and is a perspective view showing a state in which the fence is horizontal. Fig. 3 is a perspective view showing a rack in which a fence according to an embodiment of the present invention is placed, and shows a state in which the fence is retracted from the lower side. Fig. 4 is a perspective view showing the end portion on the opposite side of the fence as the above. Fig. 5 is a view showing the structure (locked state) of the lock mechanism 30 when the fence is in the upright state, (a) is a perspective view, and (b) is a front view. Fig. 6 is a view showing the structure (lock release state) of the lock mechanism 30 when the fence is in the upright state, (a) is a perspective view, and (b) is a front view. Fig. 7 is a perspective view showing a state in which one portion of the lock mechanism 30 is not disassembled. Fig. 8 is a view showing the structure of the lock mechanism 30 when the fence is in a horizontal state, (a) is a perspective view, and (b) is a plan view. Fig. 9 is a perspective view showing a conventional locking mechanism (locked state). Fig. 10 is a perspective view showing a conventional lock mechanism (lock release state) [Explanation of main component symbols] 1 : Bed portion 2: Fence 3: Support portion -17- 1356693 4: Rotary shaft 5: Projection 6: Concave portion 10 : Stretcher 1 1 : Bed 12 , 13 : Rotary support 14 : Wheel 15 : Lifting device _ 1 6 : Compression coil spring 20 : Fence 21 : Fence body 22 , 23 : Rotary shaft 24 : Mounting portion 30 : Locking mechanism 3 1 : 1st engaging portion 32 : 2nd engaging portion ® 41 : Base portion 42 : Rod 43 : Pin member 44 : Locking member 45 : Coil spring 46 : Extension portion 47 : Engaging projection 48 : Flange -18- 1356693 50 : recess 51 : cylindrical portion 52 : hole 5 3 : sliding portion 54 : slit