1316597 九、發明說明 【發明所屬之技術領域】 本發明’係有關於具備以鉸鏈爲支點開關之開關門的 冷凍冷藏庫。 . 【先前技術】 一般冷凍冷藏庫之冷藏室，係利用頻率較高而頻繁進 9 行打開、關閉。該構造’係以鉸鏈爲支點來開關之鉸鏈型 式，有門爲一片之單開型，或雙門之門有兩片的雙開型， 其內側爲門置物架。 門置物架係成爲可簡單取放食品或飲料等，當將食品 或飲料等放入該門置物架，則重量會增加，使門的開關變 重。尤其近年來冷藏庫本體大型化，小孩或老年人會難以 開關門，故提案有將開關門容易開關的門開關裝置。 〔專利文件1〕日本特開2005-127527號公報 【發明內容】 發明所欲解決之課題 幫助門開關之門開關裝置，係一種構造，由設置於門 之拉入構件，和可以與該拉入構件結合或離開的門開關手 段’所構成。門開關手段，爲了門開關能承受開門對象， 必須有確保該對象之動作的聯繫機構，構造會變的複雜； 又因爲門係藉由關門手段強制關門，故全關時之衝擊會變 大。因此會導致從衝擊聲開始，到對門周圍之密封造成不 1316597 良影響的問題。 因此，本發明之目的爲提供一種構造簡潔，同時抑制 開關門關門時之衝擊，而可得到確實開關動作的冷凍冷藏 庫。 用以解決課題之手段 爲了達成上述目的，本發明之特徵係具備：對冷藏庫 本體以鉸鏈爲支點來開關的開關門；和於該開關門之關門 時咬合，在咬合狀態下結束全關結束之前，以彈簧壓將開 關門作爲拉入全關狀態，且爲獨立的開關門拉入裝置；和 於開關門全關時，承受該全關時之衝擊的衝擊承受裝置； 和藉由操作部之ON操作，將全關時之開關門向著開門方 向推出的開關門推出裝置。 發明效果 若依本發明，則藉由開關門拉入裝置將關門時之開關 門強制拉入到全關位置爲止，可得到確實的全關狀態。開 關門拉入裝置係以彈簧壓拉入的單純構造，而且是獨立的 ，故不用聯繫機構而構造簡單。 又’在開關門全關時，衝擊承受裝置會動作，承受吸 收該衝擊能量，故可避免衝擊造成的不良影響。 又，全關時之開關門，係藉由使開關門推出裝置動作 而可簡單且容易地開門，從全關動作到開門動作可以輕而 容易地進行。 -6- 1316597 【實施方式】 本發明中，第1點係：從上述鉸鏈側依序配置衝擊承 受裝置、開關門拉入裝置、開關門推出裝置；同時，最少 . 使衝擊承受裝置及拉入裝置成爲安裝於冷藏庫本體所安裝 _ 之基體構件的單元構造；藉此對冷藏庫本體之安裝會變簡 單，另一方面，可減少零件數量而謀求零件管理手續的減 參 少。 第2點，係：上述衝擊承受裝置，係配置於最靠近上 述鉸鏈的位置；同時，由設置於上述冷藏庫本體之缸筒， 和從缸筒突出且經常被彈壓到衝擊等待位置之可前進、後 退的阻尼桿，來構成；另一方面，在開關時，與上述衝擊 等待位置之阻尼桿前端承受面作面接觸的阻尼碰觸面，係 設置於上述開關門；藉此，可接近鉸鏈而減少阻尼桿之干 涉行程，同時在與開關門碰觸時，藉由面接觸較廣面積之 # 阻尼碰觸面，可以不勉強地確實承受衝擊。 第3點，係：上述開關門拉入裝置，係在從上述鉸鏈 起算較接近的位置，配置於衝擊承受裝置的外側；同時， 由以下部分構成：在從開關門突出之前端具有咬合突起體 的門臂；和具有設置於冷藏庫本體，可以旋轉到與上述咬 合突起體咬合之咬合等待位置及拉入位置之拉入凹部的， 旋轉體；和將旋轉體之拉入凹部，切換彈壓爲咬合等待位 置與拉入位置的彈壓手段；藉此，可以作爲旋轉體、彈壓 手段、設置於開關門之門臂等難以發生故障的簡單構造， 1316597 另一方面，將具有突出感之門臂靠近鉸鏈側可以使其不顯 眼。 第4點，係：上述開關門拉入裝置之旋轉體，係藉由 站立有旋轉軸之基體構件和壓住旋轉體上面之旋轉蓋，而 以上述旋轉軸爲中心被支撐爲可自由旋轉；將上述旋轉蓋 固定支撐於基體構件之複數安裝螺絲中，有一個是設置於 咬合等待位置，亦即上述拉入凹部之附近位置；藉此，尤 其藉由咬合突起體對拉入凹部作用之衝擊使旋轉體往上上 升的動作，可以藉由附近位置之安裝螺絲而穩固、確實地 壓入，來得到長時間的安定動作狀態。 第5點，係：上述複數安裝螺絲，係設置於上述彈壓 手段之動作範圔的外側；藉此，彈壓手段之動作不會產生 障礙。 第6點，係：上述開關門拉入裝置之拉入凹部，係具 備在開關門於關門前以某些手段轉動到拉入位置時，將關 門時之門臂之咬合突起體，向著上述拉入凹部之拉入凹部 上端邊緣誘導導引的傾斜導引面；藉此，即使例如誤將拉 入凹部轉動到拉入位置，也不會對開關門之關門動作造成 不良影響，而可使咬合突起體無障礙地咬合於拉入凹部內 ，而不對關門動作造成障礙。 第7點，係：上述開關門推出裝置，係在衝擊承受裝 置、開關門拉入裝置之外側，配置於最遠離鉸鏈的位置； 同時具有藉由上述操作部之ON操作，將開關門推出到前 方的電磁閥桿，電磁閥桿則設置有承受來自前方之衝擊的 -8- 1316597 阻尼手段；藉此，可以使開關門推出裝置工作爲第2衝擊 承受手段，另一方面，藉由自鉸鏈遠離之位置之推壓作用 點的槓桿原理，可以用較小力量將開關門往開門方向輕易 推出。 . 實施例 以下，參考第1圖至第8圖之圖示，具體說明本發明 φ 之實施方式。 第1圖係將本發明之衝擊承受裝置、開關門拉入裝置 、開關門推出裝置設置於冷藏庫本體上面之主要部分的槪 要立體圖；第2圖表示冷凍冷藏庫之槪要正面圖。 冷凍冷藏庫1之冷藏庫本體3，係從上方依序爲冷藏 室5、左右之製冰室7及切換室9、蔬菜室11、冷凍室13 ，從設置於左右之製冰室7及切換室9開始，蔬菜室11、 冷凍室13等任一個的前面，都是可藉由各把手7a、9a、 # 1 1 a、1 3 a拉到前方的拉出型。 另一方面，冷藏室5前面，係成爲以鉸鏈15作爲支 點來開關，雙門型的開關門1 7。 開關門1 7，係藉由門開關裝置1 9來分別得到全關狀 態與開門狀態。 門開關裝置1 9，係由開關門拉入裝置2 1和開關門推 出裝置23和衝擊承受裝置25所構成，對應左右之開關門 17而左右設置一對。 在此因爲左右係相同構造，故僅說明一邊，另一邊之 -9- 1316597 圖中右側則附加相同符號而省略詳細說明。 開關門拉入裝置21、開關門推出裝置23和衝擊承受 裝置25，係如第1圖所示般在冷藏庫本體3之天花板上面 3a，依序配置爲衝擊承受裝置25、開關門拉入裝置21、 開關門推出裝置23。 衝擊承受裝置25，係在對上述鉸鏈15接近的位置， 如第3圖所示般由缸筒27，和從缸筒27突出，經常被彈 壓到衝擊等待位置L，而可前進、後退之阻尼桿29所構 成。位於衝擊等待位置L之阻尼桿29的前端承受面29a ，在關門時會與開關門1 7碰觸；但是該開關門1 7之碰觸 部位，係設置有與阻尼桿前端承受面29a作面接觸的阻尼 碰觸面3 1。 從而，可以用較廣面積之面來確實承受衝突載重，同 時也接近鉸鏈1 5，而可縮小阻尼桿29的干涉行程。 開關門拉入裝置21，係在從上述鉸鏈15起算較接近 的位置，配置於上述衝擊承受裝置2 5的外側；同時，由 以下部分構成：在從開關門17上端面突出之前端具有咬 合突起體33的門臂35;和具有設置於冷藏庫本體3，可 以旋轉到與上述咬合突起體咬合之咬合等待位置（第4圖 )及拉入位置（第5圖）之拉入凹部37的旋轉板39;和 將旋轉板39之拉入凹部，切換彈壓爲咬合等待位置與拉 入位置，來作爲彈壓手段的線圏彈簧4 1。 開關門拉入裝置21，係如第4圖所示般，成爲與上述 衝擊承受裝置25 —同被安裝於基體構件43的單元構造。 -10- 1316597 零件數量管理可以用一件來解決，同時在組裝時藉由將基 體構件43安裝於冷藏庫本體3之天花板上面3a，可以將 衝擊承受裝置25和開關門拉入裝置21 —起安裝結束於正 確位置，而得到迅速的安裝狀態。 • 旋轉板39,係如第5圖與第6圖所示，對從基體構件 . 43起立之旋轉軸45自由旋轉地鑲嵌支撐，上面則被旋轉 蓋4 7規範往上方的移動。旋轉板3 9之一端，設置有俯視 # 時前方爲開放之拉入凹部37。拉入凹部37，係與從開關 門17上端往內側突出之門臂35之前端的咬合突起體33 自由裝卸地咬合，藉此可從咬合等待位置（第4圖）轉動 到拉入位置（第5圖）。 旋轉板3 9，係具有作爲彈壓手段之線圈彈簧4 1 ;線 圈彈簧41之一端固定在設置於基體構件43之固定彈簧安 裝部49，另一端則固定在上述拉入凹部37之附近部位， 亦即設置於旋轉板3 9之可動彈簧安裝部5 1。 ^ 線圈彈簧4 1，係以固定彈簧安裝部49與旋轉板3 9之 旋轉軸4 5所連結的軸心線X爲邊界，超越死點之移動量 則爲動作範圍。具體來說，當可動彈簧安裝部5 1有一邊 超越死點時，線圈彈簧4 1會被用力拉開，彈簧壓也會變 成最大；同時即使超過死點一點點，拉入凹部37也會藉 由彈簧壓一口氣轉動定位於咬合等待位置（第4圖）爲止 〇 此時，旋轉板39之阻止突起39a會碰觸基體構件43 之第1位置規範面43a，藉此被拘束動作。 -11 - 1316597 又，以上述軸心線χ爲邊界’而可動彈簧安裝部51 另一邊超越死點時，線圈彈簧41會被用力拉開’彈簧壓 也會變成最大；同時即使超過死點一點點’拉入凹部37 也會藉由彈簧壓一口氣轉動定位於拉入位置（第5圖）爲 止。 此時設置於旋轉板39之阻止面39b碰觸基體構件43 之第2位置規範面43b，藉此被拘束動作，同時藉由線圈 彈簧41之彈簧壓來確實確保往開關門全關方向之拉入作 用。 旋轉蓋47，係由兩個場所之安裝螺絲52、53來固定 支撐，一個是將從旋轉蓋47向外延伸之延長部55，以第 1安裝螺絲5 2來固定支撐。另一個是在位於咬合等待位置 (第4圖）之拉入凹部的附近位置，於旋轉蓋47內側以 第2安裝螺絲5 3來固定支撐。 此時，第2安裝螺絲5 3所貫通之旋轉板3 9，係如第 6圖所示，設置有允許旋轉板39旋轉之圓弧狀長孔57, 而不會對旋轉造成障礙。 第1、第2安裝螺絲5 2、5 3之安裝位置，係如第4圖 、第5圖所示般配置於線圈彈簧41外側，而不會對線圈 彈簧4 1之動作造成任何障礙。 安裝旋轉蓋39之第1、第2安裝螺絲52、53中，尤 其弟2安裝螺絲53有以下功能。如第4圖所示般拉入凹 部37位於咬合等待位置（第4圖）時’線圏彈簧41之彈 簧作用’和關門時門臂35之咬合突起體33與拉入凹部37 -12- 1316597 碰觸的衝擊作用，會相輔相成而工作爲向上的拉開作用， 但是會成爲藉由第2安裝螺絲5 3而確實推入的構造。 另外，上述實施方式係最少以2支安裝螺絲5 2、5 3 來得到旋轉板3 9之固定支撐狀態，但是也可以進一步設 - 置第3、第4安裝螺絲。此時，條件是安裝位置要在線圈 . 彈簧41之動作範圍外。 另一方面，旋轉板39之拉入凹部37，係藉由站立周 Φ 圍壁而形成爲U字形，來確保與上述門臂35之咬合突起 體33的寬廣碰觸面；另一方面，拉入凹部37即使因爲惡 作劇等手段而直接轉動到拉入位置（第5圖），也不會對 開關門1 7之開關造成障礙。具體來說，是於拉入凹部3 7 (第5圖面前側）’設置往拉入凹部上端邊緣37a上升傾 斜的傾斜導引面59。 藉此，關門時位於咬合等待位置（第4圖）之拉入凹 部3 7即使旋轉到拉入位置（第5圖），門臂3 5之咬合突 • 起體3 3 ’也因爲門臂3 5之前端側成爲自由端，並沿著假 想線所示般不勉強地沿著傾斜導引面5 9上升，而於開關 門1 7全關時與咬合凹部3 7咬合。結果，從下個動作開始 可以再次確保開關門1 7之拉入動作。 開關門推出裝置23，係配置於離鉸鏈1 5最遠的位置 ’如第7圖所示般’是突出有電磁閥桿61的電磁閥型式 〇 裝置本體63之安裝凸緣63a，係對設置於上述基體構 件4 3之安裝部6 5，以螺絲等固定手段來一體固定。 -13- 1316597 電磁閥桿6 1，藉由設置於開關門1 7而作爲觸控開關 之操作部67的ON操作而使電磁閥69動作時則前進（箭 頭），將全關狀態之開關門1 7往開門方向推出’同時可 藉由復原彈簧71來復原。 第8圖係表示電磁閥69之動作特性，比起將旋轉板 39彈壓到咬合等待位置（第4圖）與拉入位置（第5圖） 的上述線圏彈簧4 1，具備經常較強的特性。尤其設定爲在 線圈彈簧41超越死點時，會配合彈簧壓強大工作範圍顯 示最大的特性峰値。 又，電磁閥桿6 1之後端部，設置有作爲阻尼器手段 的衝擊吸收用彈簧73，即使在開關門1 7關門時有強大衝 擊作用於電磁閥桿61，也會藉由上述衝擊吸收用彈簧73 來進行衝撃吸收，而對上述衝擊承受裝置25工作爲第2 衝擊承受手段。 若依如此構成之門開關裝置1 9，則全關時藉由操作操 作部67，則開關門推出裝置23之電磁閥桿61會動作，而 可輕易且迅速地將開關門1 7往前方推出而開門。此時電 磁閥桿61也因爲在離鉸鏈15最遠的位置，與推出動作點 離鉸鏈1 5較遠之槓桿原理相輔相成，而用比較輕之操作 力，亦即電磁閥所使用之能量較小就可完成。 其次’若以手將開門狀態之開關門1 7往關門方向推 ’則門臂35之咬合突起體33會與旋轉板39之拉入凹部 37咬合，同時使旋轉板39往逆時針方向轉動。此旋轉板 39轉動時，因爲線圈彈簧41會超過死點，故藉由此時線 -14- 1316597 圈彈簧41之彈簧壓，將旋轉板3 9轉動到拉入位置（第5 圖）爲止。結果開關門17不會成爲半開等，而可確實得 到全關狀態。 另一方面，於開關門1 7關門時，當接近全關瞬間則 - 衝擊承受裝置25會動作，同時與電磁閥桿61所形成之雙 . 重衝擊吸收手段相輔相成，確實承受關門時之衝突能量， 故可將衝撃聲抑制爲較小。又，不會對門周圍之密封構件 # 造成不良影響。 又，即使旋轉板3 9因爲小孩子的惡作劇等，而從咬 合等待位置（第4圖）旋轉到拉入位置（第5圖），也因 爲門臂35之咬合突起體33會沿著傾斜導引面59往上爬 ，故不會對開關門1 7之關門動作造成任何不良影響，而 在長時間下可得到安定之動作狀態。 【圖式簡單說明】 # 〔第1圖〕表示本發明之冷凍冷藏庫之主要部分的槪 要立體圖 〔第2圖〕冷凍冷藏庫之槪要正面圖. 〔第3圖〕衝擊承受裝置之阻尼桿前端面與開關門碰 觸時的槪要說明圖 〔第4圖〕將衝撃承受裝置與開關門拉入裝置作爲單 元構造，同時設置於開關門拉入裝置之旋轉板之拉入凹部 位於咬合等待位置，而表示此狀態的槪要俯視圖 〔第5圖〕將設置於開關門拉入裝置之旋轉板之拉入 -15- 1316597 凹部，從咬合等待位置轉動到拉入位置，而表示此狀態之 與第4圖相同的的槪要俯視圖 〔第6圖〕表示將衝擊承受裝置與開關門拉入裝置從 基體構件拆除之狀態的槪要分解立體圖 〔第7圖〕表示開關門推出裝置的槪要俯視圖 . 〔第8圖〕表示開關門拉入裝置與開關門推出裝置之 _ 關係的動作特性說明圖 【主要元件符號說明】 3 =冷藏庫本體 15 :鉸鏈 1 7 :開關門 1 9 :門開關裝置 2 1 :開關門拉入裝置 23 :開關門推出裝置 25 :衝擊承受裝置 · 27 :缸筒 29 :阻尼桿 29a :阻尼桿前端承受面 3 1 :阻尼碰觸面 33 :咬合突起體 3 5 :門臂 3 7 :拉入凹部 37a :拉入凹部上端邊緣 -16- 1316597 3 9 :旋轉板 4 1 :線圏彈簧（彈壓手段） 43 :基體構件 45 :旋轉軸 47 :旋轉蓋 5 2、5 3 :安裝螺絲 59 :傾斜導引面 6 1 :電磁閥桿 6 7 :操作部 7 1 :衝擊吸收用彈簧（阻尼器手段）[Technical Field] The present invention relates to a refrigerator-freezer having a switch door having a hinge as a fulcrum switch. [Prior Art] The refrigerating compartment of a general freezer is frequently opened and closed by a high frequency. The structure is a hinge type in which a hinge is used as a fulcrum to switch, a single-open type in which the door is one piece, or a double-open type in which the double-door door has two pieces, and the inside is a door rack. The door rack is such that food or beverage can be easily taken, and when food or beverage is placed in the door rack, the weight is increased and the door switch is made heavier. In particular, in recent years, the size of the refrigerator main body has increased, and it has been difficult for a child or an elderly person to open and close the door. Therefore, a door opening and closing device that easily opens and closes the switch door has been proposed. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2005-127527 SUMMARY OF THE INVENTION PROBLEM TO BE SOLVED BY THE INVENTION A door switch device for a door switch is a structure that is provided by a pull-in member provided to a door, and can be coupled with the pull-in structure The device is combined with or separated from the door switch means. The door switch means that in order for the door switch to withstand the door opening object, there must be an association mechanism for ensuring the action of the object, and the structure becomes complicated; and because the door system forcibly closes the door by closing the door, the impact at the time of full closing becomes large. Therefore, it will cause a problem that does not affect 1316597 from the start of the impact sound to the sealing around the door. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a freezer which is simple in construction and which suppresses an impact when a door is closed by a switch door, and which can obtain a true switching action. Means for Solving the Problems In order to achieve the above object, a feature of the present invention is to provide a switch door that switches a refrigerator body with a hinge as a fulcrum; and when the door is closed, the door is closed, and the end of the door is closed. Previously, the switch door was pulled into the fully closed state by the spring pressure, and was an independent switch door pull-in device; and the impact bearing device that received the impact when the switch door was fully closed; and the operation portion In the ON operation, the opening and closing door is pushed out toward the door opening direction. EFFECTS OF THE INVENTION According to the present invention, the switch door pull-in device forcibly pulls the switch door at the time of closing the door to the fully closed position, thereby obtaining a true fully closed state. The door closing device is a simple structure that is spring-loaded and is independent, so the structure is simple without the contact mechanism. Moreover, when the switch door is fully closed, the impact receiving device will operate and absorb the impact energy, so that the adverse effects caused by the impact can be avoided. Further, the opening and closing of the door can be easily and easily opened by operating the opening and closing device, and the door closing operation can be performed lightly and easily. -6- 1316597 [Embodiment] In the present invention, the first point is that the impact receiving device, the switch door pull-in device, and the switch door pushing device are arranged in order from the hinge side; at the same time, the impact receiving device and the pull-in are at least The device is a unit structure that is attached to the base member to which the refrigerator body is mounted. This makes it easy to mount the refrigerator body. On the other hand, the number of parts can be reduced, and the number of parts management procedures can be reduced. The second point is that the impact receiving device is disposed at a position closest to the hinge, and is advanced by a cylinder provided in the refrigerator body, and protrudes from the cylinder and is often biased to an impact waiting position. And a damper rod that is retracted; on the other hand, at the time of switching, a damper contact surface that is in surface contact with the front end of the damper rod of the impact waiting position is disposed on the switch door; thereby, the hinge can be accessed The interference stroke of the damper rod is reduced, and at the same time, when it is in contact with the switch door, by the surface contact with the wider area of the damper touch surface, it is possible to not withstand the impact. The third point is that the switch door pull-in device is disposed on the outer side of the impact receiving device at a position close to the hinge, and is configured to have a nip protrusion at a front end protruding from the switch door. a door arm; and a rotating body provided in the refrigerator body, rotatable to a nip-in waiting position and a pull-in position engaged with the engaging protrusion; and pulling the rotating body into the recess, switching the biasing force to The elastic pressing means for occluding the waiting position and the pulling-in position; thereby, it can be used as a rotating body, a biasing means, a simple structure such as a door arm provided on the opening and closing door, and the like, 1316597, on the other hand, the door arm having a protruding feeling is close to The hinge side can make it inconspicuous. The fourth point is that the rotating body of the switch door pulling device is supported by the base member having the rotating shaft and the rotating cover that presses the upper surface of the rotating body, and is rotatably supported around the rotating shaft; The rotating cover is fixedly supported by the plurality of mounting screws of the base member, and one of them is disposed at the nip waiting position, that is, the position near the pull-in recess; thereby, in particular, the impact of the engaging protrusion on the pull-in recess The action of raising the rotating body upward can be firmly and surely pressed by the mounting screws at the vicinity to obtain a long-term stable operating state. According to the fifth aspect, the plurality of mounting screws are provided outside the operating range of the biasing means; whereby the operation of the biasing means does not cause an obstacle. The sixth point is: the pull-in recess of the above-mentioned opening and closing device of the switch door, which is provided with the engaging protrusion of the door arm when the door is closed when the switch door is rotated to the pull-in position by some means before closing the door, toward the pull The upper end edge of the recessed portion of the recessed portion induces the inclined guide surface of the guide; thereby, even if, for example, the pull-in recess is mistakenly rotated to the pull-in position, the door closing action of the switch door is not adversely affected, and the snap protrusion can be caused. The body is bite-fitted into the recessed portion without obstructing the closing action. The seventh point is that the above-mentioned opening and closing device for opening and closing the door is disposed at a position farthest from the hinge on the outer side of the impact receiving device and the opening and closing device of the opening and closing door, and has the ON operation of the operating portion to push the opening and closing door to The solenoid valve stem on the front, the solenoid valve stem is provided with an -8-1316597 damping means that can withstand the impact from the front; thereby, the switch door pushing device can be operated as the second impact receiving means, and on the other hand, by the self-hinge The lever principle of pushing the action point away from the position can be easily pushed out with the small force to open the door. [Embodiment] Hereinafter, an embodiment of the present invention φ will be specifically described with reference to the drawings of Figs. 1 to 8. Fig. 1 is a perspective view showing the main part of the upper surface of the refrigerator main body of the impact receiving device, the door opening and closing device, and the door opening and lowering device of the present invention; and Fig. 2 is a front view of the freezer and refrigerator. The refrigerator main body 3 of the freezer/refrigerator 1 is a refrigerating compartment 5, a left and right ice making compartment 7, a switching compartment 9, a vegetable compartment 11, and a freezing compartment 13 from the top, and is switched from the left and right ice making compartments 7 and At the beginning of the chamber 9, the front side of any of the vegetable compartment 11, the freezing compartment 13, and the like is a pull-out type which can be pulled forward by the handles 7a, 9a, #1 1 a, and 1 3 a. On the other hand, the front side of the refrigerating compartment 5 is a switch door 17 which is opened and closed by a hinge 15 as a fulcrum. The switch door 17 is respectively brought to the fully closed state and the open state by the door opening and closing device 19. The door opening and closing device 197 is composed of a switch door pulling device 2 1 , a switch door pushing device 23 and an impact receiving device 25, and a pair of left and right switches are provided corresponding to the left and right switch doors 17 . Here, since the left and right sides have the same structure, only one side will be described, and the other side will be denoted by the same reference numerals on the right side, and the detailed description will be omitted. The switch door pull-in device 21, the switch door push-out device 23, and the impact receiving device 25 are arranged on the ceiling top surface 3a of the refrigerator main body 3 as shown in Fig. 1, and are sequentially arranged as an impact receiving device 25 and a switch door pull-in device. 21. The door opening and pushing device 23 is opened and closed. The impact receiving device 25 is at a position close to the hinge 15, as shown in Fig. 3, and protrudes from the cylinder 27 and from the cylinder 27, and is often biased to the impact waiting position L, and can be moved forward and backward. The rod 29 is constructed. The front end receiving surface 29a of the damper rod 29 located at the impact waiting position L is in contact with the opening and closing door 17 when the door is closed; however, the touching portion of the opening and closing door 17 is provided with the damper rod front end receiving surface 29a. The contact damping contact surface 3 1 . Thus, the face of a wider area can be used to reliably withstand the collision load, and also close to the hinge 15 to narrow the interference stroke of the damper lever 29. The switch door pull-in device 21 is disposed on the outer side of the impact receiving device 25 at a position closer to the hinge 15; and is configured to have a nip protrusion at a front end protruding from the upper end surface of the switch door 17 a door arm 35 of the body 33; and a rotation of the pull-in recess 37 provided in the refrigerator body 3 and rotatable to a nip waiting position (Fig. 4) and a pull-in position (Fig. 5) engaged with the engaging projection The plate 39; and the reeling plate 39 are pulled into the concave portion, and the elastic force is switched to the nip waiting position and the pull-in position as the wire spring 41 of the biasing means. The switch door pull-in device 21 is a unit structure that is attached to the base member 43 in the same manner as the above-described impact receiving device 25 as shown in Fig. 4 . -10- 1316597 The number of parts can be solved by one piece, and the impact bearing device 25 and the opening and closing device 21 can be pulled up by mounting the base member 43 on the ceiling top 3a of the refrigerator body 3 during assembly. The installation ends in the correct position and is quickly installed. • The rotating plate 39 is rotatably supported by the rotating shaft 45 standing from the base member 43 as shown in Figs. 5 and 6, and the upper surface is moved upward by the rotating cover 47. One end of the rotating plate 39 is provided with a pull-in recess 37 which is open at the front in plan view #. The recessed portion 37 is detachably engaged with the engaging projection 33 at the front end of the door arm 35 projecting inward from the upper end of the opening and closing door 17, thereby being rotatable from the nip waiting position (Fig. 4) to the pulled-in position (5th) Figure). The rotating plate 309 has a coil spring 4 1 as a biasing means; one end of the coil spring 41 is fixed to the fixed spring mounting portion 49 provided on the base member 43, and the other end is fixed to the vicinity of the pull-in recess 37, That is, it is provided on the movable spring mounting portion 51 of the rotary plate 39. The coil springs 4 1 are bounded by the axial line X to which the fixed spring attachment portion 49 and the rotating shaft 45 of the rotating plate 358 are coupled, and the amount of movement beyond the dead point is the operating range. Specifically, when the movable spring mounting portion 51 has one side beyond the dead point, the coil spring 4 1 is pulled apart by force, and the spring pressure is also maximized; and even if the dead point is exceeded a little, the pull-in recess 37 is borrowed. When the spring is pressed and positioned at the nip waiting position (Fig. 4), the stopper projection 39a of the rotary plate 39 comes into contact with the first position regulating surface 43a of the base member 43, thereby being restrained. -11 - 1316597 Further, when the other side of the movable spring attachment portion 51 is beyond the dead point by the axial center line ', the coil spring 41 is pulled apart by force. 'The spring pressure also becomes maximum; and even if it exceeds the dead point The point 'pull-in recess 37' is also rotated by a spring to be positioned at the pull-in position (Fig. 5). At this time, the blocking surface 39b provided on the rotating plate 39 comes into contact with the second position regulating surface 43b of the base member 43, thereby being restrained, and at the same time, the spring pressure of the coil spring 41 ensures the pulling of the opening and closing directions of the opening and closing of the door. Into the role. The rotary cover 47 is fixedly supported by mounting screws 52, 53 at two places, and an extension portion 55 extending outward from the rotary cover 47 is fixedly supported by the first mounting screw 52. The other is fixed at the inner side of the rotary cover 47 with the second mounting screw 53 in the vicinity of the pull-in recess located at the nip waiting position (Fig. 4). At this time, as shown in Fig. 6, the rotating plate 3 9 through which the second mounting screw 53 penetrates is provided with an arcuate elongated hole 57 that allows the rotating plate 39 to rotate without causing an obstacle to the rotation. The mounting positions of the first and second mounting screws 5 2, 5 3 are disposed outside the coil spring 41 as shown in Figs. 4 and 5, without causing any trouble to the operation of the coil spring 41. Among the first and second mounting screws 52 and 53 to which the rotary cover 39 is attached, the second mounting screw 53 has the following functions. As shown in Fig. 4, when the pull-in recess 37 is at the nip waiting position (Fig. 4), the 'spring action of the coil spring 41' and the occlusion projection 33 of the door arm 35 when closing the door and the pull-in recess 37 -12 - 1316597 The impact action of the touch will complement each other and work as an upward pulling action, but it will be a structure that is pushed in by the second mounting screw 53. Further, in the above embodiment, the fixed support state of the rotary plate 39 is obtained by at least two mounting screws 5 2, 5 3 , but the third and fourth mounting screws may be further provided. At this time, the condition is that the mounting position is outside the range of the coil. On the other hand, the drawing recessed portion 37 of the rotary plate 39 is formed in a U shape by the surrounding circumference Φ surrounding wall to secure a wide contact surface with the engaging projection 33 of the door arm 35; Even if the recessed portion 37 is directly rotated to the pull-in position (Fig. 5) by means of mischief or the like, the switch of the switch door 17 is not hindered. Specifically, the inclined guide surface 59 which is inclined upward toward the upper end edge 37a of the pull-in recess is provided in the recessed portion 3 7 (front side of the fifth figure). Thereby, even if the pull-in recessed portion 37 located at the nip waiting position (Fig. 4) when the door is closed is rotated to the pull-in position (Fig. 5), the occlusal protrusion 3 of the door arm 35 is also due to the door arm 3 The front end side of the 5 is a free end, and rises along the inclined guide surface 59 as shown by the imaginary line, and engages with the engagement recess 37 when the switch door 17 is fully closed. As a result, the pull-in operation of the opening and closing door 17 can be ensured again from the next motion. The door opening and lowering device 23 is disposed at a position farthest from the hinge 15 'as shown in Fig. 7' is a mounting flange 63a of the solenoid valve type cymbal body 63 protruding with the electromagnetic valve stem 61, and is provided in a pair The mounting portion 65 of the base member 43 is integrally fixed by a fixing means such as a screw. -13- 1316597 The solenoid valve stem 6 is opened (arrow) when the solenoid valve 69 is operated as an ON operation of the operation portion 67 of the touch switch provided in the switch door 17 to open the door in the fully closed state. 1 7 is pushed out in the direction of opening the door and can be restored by the return spring 71. Fig. 8 is a view showing the operational characteristics of the solenoid valve 69, which is often stronger than the above-described coil spring 41 that biases the rotary plate 39 to the nip waiting position (Fig. 4) and the pull-in position (Fig. 5). characteristic. In particular, when the coil spring 41 is over the dead point, the maximum characteristic peak is displayed in accordance with the strong working range of the spring pressure. Further, the rear end portion of the electromagnetic valve stem 6 1 is provided with a shock absorbing spring 73 as a damper means, and even if a strong impact acts on the electromagnetic valve stem 61 when the switch door 17 is closed, the shock absorbing force is used. The spring 73 is used for the suction absorption, and the impact receiving device 25 is operated as the second impact receiving means. According to the door opening and closing device 1 9 configured as described above, when the operation portion 67 is operated at the time of full closing, the solenoid valve lever 61 of the door opening and closing device 23 is actuated, and the opening and closing door 17 can be easily and quickly moved forward. Launched and opened the door. At this time, the solenoid valve rod 61 is also complementary to the lever principle which is farthest from the hinge 15 at the position farthest from the hinge 15, and the lighter operating force, that is, the energy used by the solenoid valve is smaller. It can be done. Next, if the opening and closing door 1 7 is pushed in the closing direction by hand, the engaging projection 33 of the door arm 35 engages with the drawing recessed portion 37 of the rotating plate 39, and the rotating plate 39 is rotated counterclockwise. When the rotary plate 39 is rotated, since the coil spring 41 exceeds the dead point, the rotary plate 39 is rotated to the pull-in position (Fig. 5) by the spring pressure of the coil spring 41 by the time line -14 - 1316597. As a result, the switch door 17 does not become half-opened or the like, and the fully closed state can be surely obtained. On the other hand, when the door 1 7 is closed, when the door is closed, the impact receiving device 25 will act, and the double shock absorbing means formed by the solenoid valve rod 61 will complement the collision energy. Therefore, the squeaking sound can be suppressed to be small. Moreover, it does not adversely affect the sealing member # around the door. Further, even if the rotating plate 39 is rotated from the nip waiting position (Fig. 4) to the pulled-in position (Fig. 5) because of the child's mischief or the like, the occlusal projection 33 of the door arm 35 is guided along the slanting guide. The lead 59 climbs up, so it does not cause any adverse effect on the closing action of the opening and closing door, and the stable working state can be obtained under a long time. BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] is a perspective view showing a main part of a freezer-refrigerator of the present invention (Fig. 2) a front view of a freezer and a refrigerator. [Fig. 3] Damping of an impact bearing device When the front end surface of the rod touches the switch door, the drawing is shown in Fig. 4 (Fig. 4). The thrust receiving device and the opening and closing device of the switch door are used as a unit structure, and the pull-in recess of the rotary plate provided at the pull-in device of the switch door is located at the nip. Waiting for the position, and the top view showing the state (Fig. 5) will be placed in the recessed portion of the rotating plate of the opening and closing device of the switch door, -15- 1316597, and rotated from the bite waiting position to the pull-in position, indicating this state The same top view as that of Fig. 4 (Fig. 6) shows an exploded perspective view of the state in which the impact receiving device and the opening and closing device of the switch door are removed from the base member (Fig. 7). [Fig. 8] shows the action characteristic diagram of the relationship between the switch door pull-in device and the switch door push-out device. [Main component symbol description] 3 = refrigerator body 15: hinge 1 7 : Switch door 1 9 : Door switch device 2 1 : Switch door pull-in device 23 : Switch door push-out device 25 : Impact bearing device · 27 : Cylinder 29 : Damper lever 29a : Damper lever front end receiving surface 3 1 : Damping contact surface 33: nip protrusion 3 5 : door arm 3 7 : pull-in recess 37a : pull-in recess upper end edge - 16 - 1316597 3 9 : rotating plate 4 1 : wire spring (elastic means) 43 : base member 45 : rotating shaft 47 : Rotating cover 5 2, 5 3 : Mounting screw 59 : Tilting guide surface 6 1 : Solenoid stem 6 7 : Operating part 7 1 : Shock absorbing spring (damper means)
-17--17-