【０００１】
【発明の属する技術分野】
本発明は、発泡合成樹脂容器に関し、さらに詳しくは生鮮食料品等の鮮度保持輸送容器中の氷の溶解水や汚水等を排水口から常時垂れ流すことなく流通上の必要時に通常排水や水封排水や止水を可能とする制水機能を付与した発泡合成樹脂容器に関する。
【０００２】
【従来の技術】
従来、この種の容器としては、排水穴付の発泡スチロール魚箱のように予め容器底面に排水口を設け、溶解水や汚水等を辺り構わず常時垂れ流し、排水口から冷気の流出や外気の流入もなすがままに輸送されている通常排水型容器がある。この種の別の容器では排水口から冷気の流出や外気の流入を軽減させるため容器本体の側壁に竪穴排水口を設け積荷した複数個の容器の排水を竪穴排水口に集合させ垂れ流す竪穴排水容器や、冷気の流出や外気の流入を防止するため排水口に連通する排水溜り部の排水中に冷気遮断用の水封堰を水没させる構造の水封排水容器（実開平６−１４０５７等）等がある。
【０００３】
図１５（ａ）に示す発泡スチロール魚箱は蓋付容器で底面に排水口が開口している通常排水型容器である。図１５（ｂ）に示す発泡スチロール魚箱は蓋無の通常排水型容器である。図１６（ａ）に示す発泡スチロール魚箱は魚箱の側壁を縦断する竪穴排水口が設けられた竪穴排水魚箱である。図１６（ｂ）に示す発泡スチロール魚箱は竪穴排水と水封排水を組み合わせた竪穴水封排水魚箱である。
【０００４】
一方、釣りやレジャー用クーラーボックス等、予め容器側壁にコックや止水栓を設けている容器がある。この種の別の技術として、魚箱等の側壁に貫通穴を開けコックや盲栓を設ける方法（実願平１−６３６１７等）が提案されている。又、図１７に示す水氷輸送箱や活魚箱等は排水穴を設けず溶解水や汚水や汚物を容器内に溜めたまま輸送し着荷時や商品完売時に開函、転倒排水させている。又、氷の溶解水の発生そのものを避ける方法として蓄冷剤や小分け氷袋を用いる方法が宅配便や手提げ土産箱や夕食材通箱等で採用されている。
【０００５】
【発明が解決しようとする課題】
しかし乍ら、予め排水穴を設け溶解水や汚水を常時垂れ流す通常排水型容器は輸送車や冷蔵倉庫や店舗や他商品や荷扱者等を汚染し衛生面や美観や作業性を損ねている。又、常時開口している排水口からの冷気流出や暖気流入で鮮度が低下し氷が解け易く大量の氷を消費する。又、何段も積荷されているため排水は下段の容器に順次滴下し商品を汚染し鮮度低下と氷の溶解を加速する。
【０００６】
冷気流出や外気流入を軽減させる竪穴排水容器は、汚水を常時垂れ流す欠陥は解決されず、さらに本容器の欠点は積荷の最下段の容器や消費地では容器単体毎の保管取扱や店頭展示されるため竪穴排水の効果は無く通常排水型容器と同等の欠陥を呈する。又、冷気流出や外気流入を防止する水封排水容器は、溶解水や汚水を常時垂れ流す欠陥は解決されていない。
【０００７】
釣り用やレジャー用クーラーボックスや魚箱等の側壁に止水コックや盲栓を設けている容器は、止水栓の構造が止水栓インナーと止水栓アウターケースで構成され容器下方の側壁の貫通穴に接着剤やパッキン付き締付けネジで装着固定する等コスト高となっている。又、通常排水と止水はできるが水封排水機能は無い。さらに、止水栓取付穴の成形は金型に容器側壁を貫通させる取付穴形成シリンダーが必要で成型取り数が減り成形コスト高や金型コスト高を招く。さらに、コックや盲栓が容器側壁から突出するため輸送才数の増加や止水栓の打痕故障が起こり高価な容器や特殊用途以外では採用されていない。
【０００８】
又、排水穴を設けず容器内に汚水や廃液を溜める容器は、輸送中の重量負荷や作業負荷が大きく溶解水や汚水で商品が再汚染し鮮度低下する欠点や着荷時に開函、転倒排水の重労働を伴う。又、蓄冷剤や氷袋の氷はコスト高で蓄冷能力や鮮度保持能力が劣り着荷後の蓄冷剤や氷袋の廃棄問題が発生する等の欠点がある。
【０００９】
本発明は、上記従来技術の問題点を解消し、安価でかつ容易に鮮度低下の防止や氷使用量の削減や衛生、美観面や作業性の欠点が解決される制水機能を付与した発泡合成樹脂容器を提供するものである。
【００１０】
【課題を解決するための手段】
本発明者らは、かかる実情に鑑み鋭意研究の結果、容器本体の下部に発泡体の弾性力やアンダーカット構造を付与した止水栓取付穴に容器本体の外周面から突出しない構造で容器の外側面から通常排水や水封排水や止水の制水操作ができる止水栓を形成させることにより、所期の目的が達成されることを見出し、本発明を完成した。
【００１１】
即ち、本発明の請求項１は、発泡体にて形成された容器本体と該容器本体の下部に内部から外部に貫通させて形成された止水栓取付穴と、該止水栓取付穴に嵌挿されて当該止水栓取付穴を封止し制水する止水栓とを備え、該止水栓が容器本体の外周面から突出しない構造で、容器本体を形成する発泡体の弾性力及び／又は当該止水栓取付穴を形成するアンダーカット構造で保持固定されるように構成したことを特徴とする制水機能を付与した発泡合成樹脂容器を内容とする。
【００１２】
本発明の請求項２は、制水機能が通常排水機能と止水機能により構成されることを特徴とする請求項１に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１３】
本発明の請求項３は、制水機能が水封排水機能と止水機能により構成されることを特徴とする請求項１に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１４】
本発明の請求項４は、止水栓取付穴が容器本体の底壁面を内底面から外底面に貫通させて形成されることによってなされることを特徴とする請求項１〜３に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１５】
本発明の請求項５は、止水栓取付穴が、容器本体の側壁面の下部を容器内部から容器外側面に貫通さて形成されることによってなされることを特徴とする請求項１〜３に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１６】
本発明の請求項６は、止水栓取付穴が容器本体の側壁面を縦断して形成される竪穴型排水口と容器内部とを連通させる構造で形成されることによってなされることを特徴とする請求項１〜３に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１７】
本発明の請求項７は、止水栓取付穴が発泡合成樹脂容器の成型用金型に設けられた成型離型方向に対しアンダーカット形状の成型駒により形成されることを特徴とする請求項１〜６のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１８】
本発明の請求項８は、止水栓が止水栓インナーと止水栓取付穴を止水栓アウターケースとする構成でなされることを特徴とする請求項１〜７のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００１９】
本発明の請求項９は、止水栓が止水栓インナーと止水栓アウターケースで構成され止水栓取付穴に嵌挿保持されることを特徴とする請求項１〜７のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２０】
本発明の請求項１０は、止水栓が水平構造であることを特徴とする請求項１〜９のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２１】
本発明の請求項１１は、止水栓が垂直構造であることを特徴とする請求項１〜９のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２２】
本発明の請求項１２は、止水栓が球体構造であることを特徴とする請求項１〜９のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２３】
本発明の請求項１３は、止水栓がネジ構造であることを特徴とする請求項１〜９のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２４】
本発明の請求項１４は、止水栓が盲栓着脱構造であることを特徴とする請求項１〜９のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２５】
本発明の請求項１５は、止水栓が水封排水構造であることを特徴とする請求項１〜１４のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２６】
本発明の請求項１６は、止水栓が弾性体であることを特徴とする請求項１〜１５のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２７】
本発明の請求項１７は、止水栓が中空の筒状体を展折させることにより形成させることを特徴とする請求項１、２、４、５、７のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２８】
本発明の請求項１８は、水封排水の止水栓が中空の筒状体の容器内部の開口部と容器外部の開口部の底面からの高さレベル差により構成されることを特徴とする請求項１、３、４、５、７、１５、１７のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００２９】
本発明の請求項１９は、止水栓の制水操作が容器本体の積荷状態で容器本体の外周側面から行うことを特徴とする請求項１〜１８のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００３０】
本発明の請求項２０は、止水栓の摺動部や止水栓取付穴の内接面に漏水防止用の凹凸を設けたことを特徴とする請求項１〜１９のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００３１】
本発明の請求項２１は、止水栓の摺動部に漏水防止剤を塗布することを特徴とする請求項１〜２０のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００３２】
本発明の請求項２２は、発泡体にて形成された容器本体と上部を容器本体の外周面に連通開口させた吸引口と下方を容器本体の内底面の排水溜り部に連通する構造で容器本体の側壁を貫通して形成される中空穴、又は、中空の筒状体を容器本体の側壁内面に立設保持して形成される中空穴によってなされることを特徴とする制水機能を付与した発泡合成樹脂容器を内容とする。
【００３３】
本発明の請求項２３は、容器本体の上部に少なくとも一個の空気注入口を設け強制排水を行うことを特徴とする請求項１〜２２のいずれか１項に記載の制水機能を付与した発泡合成樹脂容器を内容とする。
【００３４】
【発明の実施の形態】
本発明は発泡合成樹脂容器の外側面に突起部が無く、輸送上の才数容積の増加や輸送コストの増加を招かず、制水操作は積段、積荷状態で容器の外周面から行うことが可能な止水栓を設けることで容器内に発生する溶解水や汚水や廃液等を流通上の必要時に通常排水や水封排水や止水させることを特徴とする。
【００３５】
又、本発明は、従来金型や従来構造で成型されている容器であっても新規金型の起型が不要で、従来の金型の平易な金型改造により本発明の容器構造に改造・提供することができる長所を有する。
【００３６】
本発明の発泡合成樹脂容器の材料は、発泡スチロールや発泡ポリエチレンや発泡ポリプロピレンや発泡ポリウレタン等、発泡合成樹脂容器が成形可能な合成樹脂を指すが断熱性や保温性を必要としない低倍発泡合成樹脂容器や射出成形で成型される合成樹脂容器であって容器内の排水、廃液を任意な時期に通常排水、水封排水、止水したい場合に本発明の制水機能や制水構造を付与することも可能でこれらは本発明に属する。主たる用途は生鮮魚介類や野菜や花卉類等の鮮度保持輸送容器や漬物や加工食品等の加工兼輸送容器や宅配便や夕食材等の通い箱やレジャーボックス等、発泡合成樹脂単材料で形成された容器や発泡合成樹脂容器の内面や外面にシート材を一体化させた表皮つき容器であっても本発明の目的が発揮される容器であれば特に限定するものではない。
【００３７】
止水栓とは、一般的に止水栓インナーと止水栓アウターケース等で形成されるものの呼称であるが、本発明では、説明の便宜上、止水栓取付穴が止水栓アウターケースを兼ねる止水栓取付穴に止水栓インナーを嵌挿し形成される止水栓構造や止水栓取付穴と中空の筒状体の止水栓インナーで構成される止水栓構造や止水栓取付穴に止水栓アウターケースと止水栓インナーで形成する止水栓を嵌挿し構成される止水栓構造等の総称として、又、止水栓インナー単体や気密Ｏリングを伴ったものや止水栓インナーが中空の筒状体である等の止水栓インナーを指し止水栓の呼称で記載する場合がある。
【００３８】
本発明の止水栓の一形態としては、止水栓取付穴が止水栓アウターケースを兼ねる止水栓取付穴に止水栓インナーを嵌挿保持固定することにより低コストの通常排水構造の止水栓が形成される。又、この止水栓取付穴と水封構造の止水栓インナーの組合せによって水封排水構造の止水栓が形成される。
【００３９】
本構成では、止水栓取付穴を形成する発泡体の弾性力及び／又は止水栓取付穴を形成するアンダーカット構造に止水栓を嵌挿保持固定されることによってなされ気密パッキンやＯリングの併用も可能で止水栓は止水栓取付穴に高い気密度で装着され漏水することは無い。また、漏水防止と止水栓制水操作をスムースとするため、滑性のある漏水防止剤を塗布すると耐久性や操作性が優れる。漏水防止剤は食品容器の場合は食品衛生取扱法に規定された液状パラフインやバター等の食油等、撥水性と滑性があるものであれば特に限定しない。又、止水栓と止水栓取付穴の密着性と漏水防止性を向上させるために止水栓インナー外周や止水栓取付穴内面に凹凸やシボ模様を付加することも適宜選択される。
【００４０】
止水栓取付穴と止水栓インナーの相互の嵌挿形状や取付寸法関係は、合成樹脂材料や発泡倍率や発泡体の弾性力とアンダーカット形状や嵌挿構造から適宜選択され実質的に漏水せず制水操作に支障が無い状態が維持されるものであれば特に限定しないが少なくとも止水栓取付穴寸法と止水栓外形寸法は同等寸法以上の強制嵌合状態が確保されるものが望ましい。アンダーカット構造とは成形離型方向に対し離型を阻害する凹凸や逆テ―パーを付すことであるが発泡体の弾性力や復元力を利用し成形離型させるのである。射出成形ではアンダーカット成形駒に拡張収縮機構を付与することでアンダーカット構造は形成される。
【００４１】
又、止水栓が止水栓インナーと止水栓アウターケースで構成されるときは、止水栓取付穴と止水栓アウターケースとの取り付けは発泡体の弾性力とアンダーカット形状の嵌挿関係に加えて発泡合成樹脂にアタックしない接着剤を併用してもよい。
【００４２】
止水栓の材料は特に限定しないが合成樹脂製のものが望ましく、容器のリサイクル性からは容器の材質と同等の樹脂を用いることが望ましい。また、コストから、容器と同一材料のリサイクル樹脂が望ましい。止水栓インナーに弾性力が付加されることは気密固定性や漏水防止性から望ましく容器材料と同等の発泡樹脂やゴム弾性のある材料が採用できる。発泡合成樹脂容器は通常はワンウエイの使い捨て容器として使用されるため低コストニーズが高く流通実態と合わせ止水栓の性能とコストのバランスから適正で安価なものが選定される。
【００４３】
本発明の制水機能や制水操作とは、容器内の氷の溶解水や汚水や廃液等を流通上の任意な時期に容器に設けた止水栓の開閉操作で容器外に排出させたり止水したりする機能及び操作を指す。
【００４４】
排水には、止水栓を開放、開口し排水させる通常排水と、排水時に冷気流出や外気流入を防止するため排水口に連通する排水溜り部の排水中に冷気遮断用の水封堰を水没させ排水だけを排出させる水封排水と、止水栓からの排水を加速させるため容器に設けた空気吹込み穴から加圧空気を注入する加圧排水や容器に設けた排水溜り部に連通された吸引穴から吸引し行う吸引排水がある。止水には、止水栓を閉操作する方法以外では吸引排水を中止することで行われる。
【００４５】
本発明における制水操作は、主として、通常の排水機能と止水機能を組合せたものと水封排水機能と止水機能を組合せた止水栓構造のものを選択することで行われ適宜加圧排水が付加されたり吸引排水が採用される。
【００４６】
また、止水栓取付穴を容器に付形成型させ止水栓を嵌挿しない場合は止水栓取付穴を排水開口部として使用する従来型容器として供給できる利点があり、同一容器であっても通常の排水機能と止水機能を持った止水栓や、水封排水機能と止水機能を持った止水栓と、従来型排水穴の容器が共通化できため客先や市場ニーズや供給コストによって適宜選択し供給することも可能である。従来型容器と止水栓取付穴を付形した容器の成形コストは全く同等で容器の選択肢が増える長所を有する。又、漁港等の生産地では、止水栓は通常排水や水封排水としておき、出荷時点で止水操作をし、着荷後は排水を継続させたり止水させる等実情に応じ実施される。
【００４７】
従来の止水栓は止水栓インナーと止水栓アウターケースで構成され、さらに止水栓操作レバーが付加されたものがあり従来の止水栓付容器の高コスト要因の一つとなっている。本発明の止水栓は、止水栓取付穴を止水栓アウターケースと兼用させるため止水栓アウターケースが不要で止水栓インナーを止水栓取付穴に嵌挿するだけで低コストの止水栓構造が形成できる。
【００４８】
又、この止水栓取付穴と止水栓インナーの構成で止水栓取付穴を傾斜させたり止水栓取付穴の一部を堰構造とすることにより水封排水の止水栓が形成できる。又、クーラーボックス等の耐久性が求められる容器では止水栓インナーと止水栓アウターケースで構成される止水栓も可能でこの構成においても止水栓取付穴のアンダーカット構造や発泡体の弾性力を利用した取付構造とすることが望ましい。
【００４９】
止水栓の構造は、容器本体の肉厚や排水方向や排水方式（通常排水や水封排水）や止水栓取付穴との構成関係等により様々な止水栓構造や形状があり容器の用途や肉厚やコスト等から適宜設計採用される。主たる止水栓構造としては水平構造や垂直構造や球体構造やネジ構造や盲栓着脱構造や中空の筒状体の展折構造等が可能で竪穴排水穴に接続して設ける構造のものもある。
【００５０】
止水栓の数は１箇所以上あればよく特に限定しないが、汚水や汚物の発生が多い魚介類用や野菜花卉等の容器では、汚物が排水経路を閉止することがあるため安全上２個以上設けることが望ましい。又、効率的な排水を行うために容器底面に排水溝に向けて流れ勾配や導水溝を設けると鮮度保持面でも望ましい。
【００５１】
止水栓取付穴の形成は、止水栓取付穴が容器本体の底壁面を内底面から外底面に貫通させて形成されることによってなされる場合は容器成型用金型のキャビティ金型の容器底面に止水栓インナーの外形と概類似のアンダーカット構造や逆テーパー等の成形駒を取り付け発泡樹脂の特性である発泡体の弾性力と発泡体が成形離型時に成形余熱で高い柔軟性と復元性を有している間にシリンダー機構を用いることなく容器の底壁面に１軸方向や２軸方向のアンダーカット形状の止水栓取付穴を形成させるのである。
【００５２】
本構成により形成される止水栓取付穴は成形離型方向に対してアンダーカット構造と容器外周方向に対してもアンダーカット構造の２軸方向のアンダーカット構造の形成が可能で止水栓には２軸方向の保持固定力が働き止水栓の嵌挿取付は容器底面方向又は容器側壁面方向から行い接着剤を用いなくても脱落したり漏水することは無い。又、本金型構造で成型するため成形取数が減じたり成形サイクルが長くなる等の成形上の欠点は発生しないのである。
【００５３】
止水栓取付穴が、容器本体の外側壁面の下部を容器内部から容器外側面に貫通さて形成されることによってなされる場合は、成形金型のキャビティ金型側面から止水栓を往復駆動させ発泡樹脂の特性である発泡体の弾性力と発泡体が成形余熱で高い柔軟性と復元性を有している間の成形離型時を利用してシリンダーの離型方向にアンダーカット構造の止水栓取付穴を成型させる。
【００５４】
外側壁面に複数の止水栓を設けたい場合はキャビティ金型の側面側にシリンダーを集中させることで成形取数の低下は防止でき、多数個取り金型で容器の対向位置にも止水栓を設けたい時は、容器の底壁面にアンダーカット構造の止水栓取付穴を設ける構造のものと組み合わせることで成形取数の低下は防止できる。
【００５５】
止水栓取付穴が容器本体の外側壁面を縦断して形成される竪穴排水口と連通させる構造によってなされる場合は、容器成型用金型のキャビティ金型の容器底面に竪穴排水口と容器内部底面とを連通させる位置に止水栓インナーの外形と概類似のアンダーカット構造の成形駒を取り付けることによりなされる。通常、魚箱の竪穴排水口は容器のコーナー部に設けられる場合が多く止水栓取付方向はコーナー部を２側面方向に横断する形状で形成させることができこの場合は止水栓の操作は２側面から行うことが可能となる。又、角部から容器の中心に向かって形成させ角部から制水操作を行うこともできる。
【００５６】
従来の容器側壁を貫通させる止水栓の取付は、通常、止水栓アウターケースと止水栓取付穴を接着剤で固定したりネジ構造で側壁面を挟持固定し行われる。本発明の容器側壁を貫通させる止水栓構造は止水栓取付穴を止水栓アウターケースとする場合も止水栓アウアターケース付の止水栓を採用する場合も止水栓取付穴を形成する発泡体の弾性力及び／又は止水栓取付穴を形成するアンダーカット構造に止水栓を嵌挿させることで保持固定させるように構成される。
【００５７】
強制排水用の圧力空気吹込み口は、通常の保冷輸送中は保冷性に影響を与えない細孔が望ましく容器の蓋と容器本体の噛合せ部に沿って形成させると空気抵抗が増し保冷性が確保され積荷状態でも外周面から強制排水操作できるので望ましい。圧力空気吹込み口の寸法は外形１ｍｍ〜５ｍｍ程度のものが目的を達するので望ましいが特に限定しない。
【００５８】
吸引排水用の中空の筒状体に接続される吸引排水口は吸引排水用の中空の筒状体の内径と同等程度のものが望ましく内径は３ｍｍ〜７ｍｍ程度のものが操作上望ましい。吸引排水口は容器の蓋の天面に開口させるものや容器の蓋と容器本体の噛合せ部に沿って形成させると保冷性は確保され積荷状態でも外周面から吸引排水操作ができるので望ましい。吸引操作はバキュームポンプや真空ポンプに接続されたホースにより実施される。又、圧力空気吹込み口から空気を押し込み吸引排水口から排水する方法も可能で状況に応じ望ましい方法が採用される。
【００５９】
【実施例】
以下、本発明を発泡スチロール魚箱の実施例に基づいてさらに詳細に説明するが、これらは本発明を何ら制限するものではない。
【００６０】
実施例１
図１は、本発明の実施例を示す概略図で、２軸開口止水栓取付穴３Ａが容器本体１の底壁面を内底面から外底面に貫通させて形成され、それぞれに２軸開口止水栓取付穴３Ａを止水栓アウターケースとする水平構造の通常排水の止水栓１０が嵌挿保持固定されている。２軸開口止水栓取付穴３Ａは底面と側面の２軸方向に開口しそれぞれ２軸方向にアンダーカット構造８を形成させている。止水栓１０の嵌挿は底面、底面の２軸方向から行うことができる。又、本２軸開口止水栓取付穴３Ａと概同形の断面構造で止水栓アウターケース付の止水栓を嵌挿装着することもできる。
【００６１】
左側断面図（ａ）は排水口２と止水栓排水溝１０Ｂが連結された排水状態を表し、右側断面図（ｃ）は漏水を遮断する方向のアンダーカット部８にＯリング２５を付した止水栓１０を配し奥面に防水パッキン２６を付した構造の止水状態を表した。正面図（ｂ）は止水状態の止水栓１０が底面方向のアンダーカット構造８を持つ止水栓取付穴３に保持固定されている正面取付状態を表している。
【００６２】
２軸開口止水栓取付穴３Ａと止水栓１０の取り付け寸法は、止水栓１０の外径１８ｍｍに対し止水栓取付穴内径１７．６ｍｍで弾性保持力を付加し、下方に開放したアンダーカット部８の正面開口幅は１３．５ｍｍ、水平軸上に形成された円皿凹状のアンダーカット部８の最外周径は２１．５ｍｍで止水栓側凸状突起は２２ｍｍで保持固定させる。止水栓１０と止水栓取付穴３Ａの最奥側の密着性を確保するため止水栓取付穴の円皿凹状のアンダーカット部８の奥行成形寸法より止水栓凸状突起１０ｃの奥行寸法を大寸法とし押圧させる。
【００６３】
このように止水栓１０は２軸開口止水栓取付穴３Ａより全体寸法を同等又は大寸法としているので相互の嵌挿部から漏水することはなく止水栓１０を左右に回転させ制水操作を行うときは弾性力で保持されているためスムースに摺動する。制水操作は容器側面から操作溝１０Ａをドライバー等で開閉操作され本構成では９０度の反転で排水、止水ができ必要に応じて容器側面に開閉方向を表示する。止水栓取付穴３Ａの成形は容器金型のキャビティ金型に一方を容器側面に開口する止水栓１０と概同形状の成形駒でアンダーカット構造の成形としているため成形取数の低下も成形サイクルの低下もしない安価な容器が提供できる。又、容器本体１と蓋１Ａとの噛合せ部に沿って双方に外形２ｍｍの半円形の空気注入口２０を設け空気圧による強制排水を可能としている。
【００６４】
実施例２
図２は、本実施例の概略図で（ａ）図は図１（ａ）に示す止水栓１０の立体断面図で操作溝１０Ａや排水溝１０Ｂや固定凸部１０Ｃの構造例を表している。（ｂ）図はＯリング付水平型止水栓１１の中心に排水溝１１Ｂの中空穴を配している構造例を表している。これらの止水栓インナー１０、１１は各々止水栓アウターケースを兼ねる止水栓取付穴３Ａに嵌挿固定されることにより止水栓は形成されるのである。
【００６５】
実施例３
図３は、本実施例の概略図で水平構造の止水栓１２の両端部を円弧状にし止水栓アウターケースを兼ねる２軸開口止水栓取付穴３Ａに嵌挿保持させている通常排水の構造例である。本構成では止水栓１２の水平軸方向には保持用の凸部は不要で止水栓１２の両端を容器側のアンダーカット構造８で挟持させている。排水方向は容器の下方向とした例である。制水操作は操作溝１２Ａにて行う。
【００６６】
実施例４
図４は、本実施例の概略図で図１の別の対応を示す図で右断面図（ｂ）は排水予備穴２Ｂを設け排水口２が貫通していない状態の容器で成形されている。左断面図（ａ）は用途や仕向け地によって排水予備穴２Ｂの底を切り欠き排水口２とし止水栓１０を取り付けることができる構造例を示している。又、排水予備穴２Ｂの底を切り欠き排水口２とし従来型魚箱とすることもできる。このように同一形状の容器であっても流通実態に合わせ排水口無の魚箱と通常排水機能と止水機能を付与した魚箱等が市場相場や季節により選択できるのである。
【００６７】
実施例５
図５は、本実施例の概略図で、容器側壁に水平構造の止水栓１３を止水栓アウターケースとする壁面止水栓取付穴３Ｂに取り付けた例である。嵌挿寸法は壁面止水栓取付穴３Ｂより止水栓１３を同等又は大寸法とすることで保持固定と漏水対策としている。容器側壁の排水口２と壁面止水栓排水穴３Ｂを偏芯させることで止水、排水を可能としている。成形はアンダーカット成形駒をシリンダーの往復駆動により行う。止水栓１３を止水栓アウターケース付の止水栓とすることも可能でこの場合もアンダーカット部８は漏水対策と保持固定の手段となる。
【００６８】
また、止水栓１３の外周形状は全体を逆テーパーとしてアンダーカット部８を省略することも併用することも適宜選択される。制水操作は１３Ａの溝をドライバー等で左右回転させ行う。排水口２を貫通させずに薄肉を形成させ排水穴なし容器として成型し止水栓が必要なときには排水口２の薄肉部を貫通させ止水栓付容器とすることも選択できる。
【００６９】
実施例６
図６は、本実施例の概略図で、容器底壁面に垂直構造の止水栓１４を止水栓アターケースを兼ねる垂直型止水栓取付穴３Ｃに取り付けた例である。嵌挿寸法は止水栓１４の外形を止水栓取付穴３Ｂより同等又は大寸法としアンダーカット部８を設け保持固定と漏水対策としている。容器底面の排水口２と止水栓排水穴１３Ｂを偏芯させることで止水、排水を可能としている。成形はキャビティ金型にアンダーカットの成形駒を設けることで行う。嵌挿は容器下方から行い下方に排水させるが側面への排水も排水穴１４Ｂを折り曲げることで可能となる。制水操作は容器側面から１４Ａをレバーにて左右回転させる例を示した。
【００７０】
実施例７
図７は、本実施例の概略図で、容器底壁面に球状体構造の止水栓１５を止水栓アウターケースを兼ねる球状止水栓取付穴３Ｄに取り付けた例である。嵌挿寸法は止水栓取付穴３Ｄより同等又は大寸法とし球体下方をアンダーカット部８として保持固定と漏水対策としている。容器底面の排水口２と止水栓排水穴１５Ｂを偏芯回転させることで止水、排水を行う。成形はキャビティ金型にアンダーカットの成形駒を設けることで行う。嵌挿は容器下方から行い下方に排水させるが側面への排水も排水穴１５Ｂを折り曲げることで可能となる。制水操作は容器側面から回転させ行い取手１５Ａは必須ではない。
【００７１】
実施例８
図８は、本実施例の概略図で水平構造の盲栓着脱式止水栓１６を止水栓アウターケースを兼ねる着脱止水栓取付穴３Ｅに取り付けた例である。排水操作は盲止水栓インナー１６Ａの着脱により行う。防水はアンダーカット部８と凸状部１６Ｃの嵌挿で行われる。又、着脱式止水栓１６の外周をネジ構造としネジの下穴径とした着脱止水栓取付穴３Ｅの内面を雌ネジ代替としネジ式の着脱式止水栓１６のネジ回転で前後着脱することもできる。（図示せず）
【００７２】
実施例９
図９は、本実施例の概略図で、２軸開口止水栓取付穴３Ａに止水栓アウターケース１９Ｅ付のネジ式止水栓１９を嵌挿した例示である。止水栓アウターケース１９Ｅはアンダーカット部８を持つ２軸開口止水栓取付穴３Ａに強制嵌挿されるため漏水せず排水口２と排水穴１９Ｂの連結の有無で止水や排水がなされる例である。
【００７３】
実施例１０
図１０は、本実施例の概略図で、水封排水止水栓取付穴３Ｈに水平型水封排水止水栓１８が嵌挿され構成される。排水口２から流入した排水は排水溜り部９に溜りこの中に水平型水封排水止水栓１８の水封堰９が水没することで排水溝１８Ｂの水平下面以下は排水されず水封排水が構成される。その効果で排水口１８Ｂから冷気の流出や外気の流入はない。水封排水止水栓取付穴３Ｈと水平型水封排水止水栓１８の防水と嵌挿はアンダーカット部８とＯリング２５によってなされる。かくして水平型水封排水止水栓１８は水封排水機能と止水機能が発揮できるのである。止水栓１８の奥面の防水に防水パッキン２６を配した。水平型水封排水止水栓１８は例えば本図の断面形状で２分割したものをＯリングで一体化させることで容易に形成される。
【００７４】
実施例１１
図１１は、本実施例の概略図で、請求項６に記載の実施例の概略図で竪穴排水口２Ａと容器内とを連結する構造で竪穴排水止水栓取付穴３Ｉを形成し竪穴排水止水栓１７を嵌挿保持させた。排水は容器内の排水と上部の容器の排水が竪穴から流入し本容器の排水と合流し竪穴排水止水栓取付穴３Ｉで集合され下方に排水される。排水、止水は操作溝１７Ａで行われる。この構成で水封型竪穴排水止水栓を用いることで水封式竪穴排水構造の容器が構成される。（図示せず）
【００７５】
実施例１２
図１２は、請求項１７の実施例の概略図で止水栓２０が中空の筒状体を展折させることにより形成させる止水栓構造を示している。排水口２に接続させた中空の展折自在の筒状体２０を容器本体１の底面と壁面に形成させたアンダーカット構造の中空体止水栓取付穴３Ｆに保持固定させた。排水時は中空筒状体の止水栓２０を下方に展開し容器内の排水を排出し止水は元に復元することでなされる。本構成は安価な市販の蛇腹付ストローの改良により実施できる。排水口２との漏水防止は弾性力や接着剤で接続されればよい。
【００７６】
実施例１３
図１３は、請求項１８の実施例の概略図で止水栓２１が中空の筒状体であって、容器外側の中空体水封止水栓２１の開口部を開放することで水封排水され、開口部を閉止することで止水する構造である。容器内の排水口２に接続され容器外側に容器内の排水面より上に開口させこの落差で水封排水構造を形成させるのである。容器側面に止水栓２１の開口部を開口状態で保持する保持溝２１Ａと中空体水封止水栓２１の開口部を閉口状態で保持する保持溝２１ＢをＶ型に設け、それぞれの取付溝２１Ａ、２１Ｂの装着位置で水封排水と止水が形成される。保持溝２１Ａと２１Ｂはアンダーカット構造で水封式止水栓２１を保持固定する。中空の筒状体としては市販の展折自在のストローを改良することでもなされる。
【００７７】
実施例１４
図１４は、請求項２２の実施例の概略図で、発泡体にて形成された容器本体と上部を容器本体の外周面に連通開口した吸引口３１と下方を容器本体の内底面に連通して設けられる容器本体の側壁を貫通して形成される中空穴２２Ａを表す図（ａ）と中空の筒状体を容器本体の側壁面に立設して形成させた中空穴２２Ｂを表す図（ｂ）である。
【００７８】
本構造は容器本体外周面に連通した吸引口３１から吸引排水することで排水させる方法と空気注入口３０から圧縮空気を圧入し吸引口３１から排水させる方法で行われる。図（ａ）の構造は排水溜り部５と中空穴２２Ａを連通する柔軟性のある成形駒を中空穴成形用ロットピンの先端に仕込み成形駒の進退で成型させる。図（ｂ）の構造は、市販のストロー等の中空の筒状体である中空穴２２Ｂの下端を排水溜り部５に浸漬させ容器内壁に中空体２２Ｂを保持固定するアンダーカット構造の係止溝を設け嵌挿保持させる。
【００７９】
【発明の効果】
叙上のとおり、本発明によれば、合成樹脂容器に生産地から店頭完売に至る流通実態に即し任意に通常排水や水封排水や止水ができる制水機能のある止水栓を発泡体の弾性力及び／又は止水栓取付穴を形成するアンダーカット構造で保持固定させるという極めてシンプルな構成により従来の止水栓付容器に比し容器成形コストも止水栓コストも止水栓装着コストも大幅なコストダウンが可能で容器内の溶解水や汚水や汚物を常時所かまわず垂れ流している通常排水や水封排水や竪穴排水魚箱等の容器が抱えている鮮度保持や衛生美観面やマテハン性や氷の過剰溶解の不経済性等の課題が確実に解決されるのである。
【００８０】
又、従来の止水栓付容器の用途では高コストや側壁からの止水栓の突出等の課題で採用が限定されてきたが、本発明の容器構造とすることにより、安価な手提げ土産箱やクーラーボックスや宅配便や夕食材通容器や秋刀魚や鰹等の水氷詰輸送箱の用途にも広く採用できるのである。又、本発明の止水栓と空気圧入口や吸引口を利用して活魚輸送箱を流通途上で海水を入れ替え遠隔地輸送を可能としたり、野菜や花卉類の真空予冷用の吸引口としても冷気置換やガス置換容器としても活用することができるのである。
【００８１】
又、現在成形中の従来型の魚箱等の容器であっても新規金型を起型する必要は無く軽微な金型改造で本発明の制水機能を付与した容器に容易に且つ安価で改造できる利点がある。又、同じ形状の止水栓取付穴で成型された魚箱が産地や市場相場や魚種等の流通実態に合わせ、通常排水と止水を組合せた止水栓や、水封排水と止水を組合せた止水栓が選択でき、更に止水栓取付穴に止水栓を取り付けない場合は通常排水型容器としてそのまま供給することもでき、相場に左右されやすい安価で大量鮮度保持輸送を旨とする鮮度保持輸送容器としてその有用性は頗る大である。
【００８２】
更に又、止水栓取付穴を止水栓アウターケースとして止水栓インナーを嵌挿し構成する等の本発明の止水栓構造は発泡合成樹脂容器以外では射出成形されるポリエチレンやポリプロピレンや塩ビ等の合成樹脂容器にも適用される。この場合、容器本体を形成する発泡体の弾性力及び／又は当該止水栓取付穴を形成するアンダーカット構造を構成する嵌挿寸法やアンダーカット形状寸法は実質的に漏水や漏液しない状態が確保されればよく適用容器構造や適用樹脂の性状や用途等から適宜決定される。如かして、本発明は、発泡合成樹脂容器や射出成形樹脂容器に広く適用できるのである。
【図面の簡単な説明】
【図１】（ａ）、（ｂ）、（ｃ）は本発明の制水機能を付与した発泡合成樹脂容器構造の１例を示す概略図である。
【図２】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図３】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図４】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図５】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図６】本発明の制水機能を付与した合成樹脂容器構造の他の例を示す概略図である。
【図７】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図８】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図９】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図１０】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図１１】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図１２】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図１３】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図１４】本発明の制水機能を付与した発泡合成樹脂容器構造の他の例を示す概略図である。
【図１５】従来型の発泡合成樹脂容器の構造を示す概略図である。
【図１６】従来型の発泡合成樹脂容器の構造の他の例を示す概略図である。
【図１７】従来型の発泡合成樹脂容器の構造の他の例を示す概略図である。
【符号の説明】
１ 容器本体
１Ａ 容器蓋
２ 排水口
２Ａ 竪穴排水口
２Ｂ 排水予備口
３ 止水栓取付穴
３Ａ ２軸開口止水栓取付穴
３Ｂ 壁面止水栓取付穴
３Ｃ 垂直型止水栓取付穴
３Ｄ 球状止水栓取付穴
３Ｅ 着脱止水栓取付穴
３Ｆ 中空体止水栓取付穴
３Ｇ 中空体水封排水止水栓取付穴
３Ｉ 竪穴排水止水栓取付穴
４ 排水
５ 排水溜り部
６ 氷
７ 水氷輸送袋
８ アンダーカット部
９ 水封堰
１０、１０Ａ、１０Ｂ、１０Ｃ 水平型止水栓
１１、１１Ａ、１１Ｂ、１１Ｃ Ｏリング付水平型止水栓
１２、１２Ａ、１２Ｂ、１２Ｃ、筒型水平型止水栓
１３、１３Ａ、１３Ｂ、１３Ｃ 壁用水平型止水栓
１４、１４Ａ、１４Ｂ、１４Ｃ 垂直型止水栓
１５、１５Ａ、１５Ｂ、１５Ｃ 球状型止水栓
１６、１６Ａ、１５Ｃ 着脱式止水栓
１７、１７Ａ、１７Ｂ、１７Ｃ 竪穴排水止水栓
１８、１８Ａ、１８Ｂ、１８Ｃ 水平型水封式止水栓
１９、１９Ａ、１９Ｂ、１９Ｃ、１９Ｅ アウターケース付止水栓
２０
２１、２１Ａ、２１Ｂ 中空体水封止水栓
２２Ａ
２２Ｂ
２５ Ｏリング
２６ 防水パッキン
３０ 空気注入口
３１ 吸引口[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a foamed synthetic resin container, and more particularly, to a conventional drainage or water-sealing device when distribution needs to be carried out without constantly discharging ice melted water or sewage in a freshness-keeping transport container for fresh food or the like from a drain port. The present invention relates to a foamed synthetic resin container provided with a water control function capable of draining and stopping water.
[0002]
[Prior art]
Conventionally, as this type of container, a drain port is provided in advance on the bottom of the container like a styrofoam fish box with a drain hole, so that dissolved water or sewage etc. always flows down regardless of where it is, and cool air flows out of the drain port or outside air inflow There are regular drainage containers that are transported as such. In another container of this type, a pit drain is provided on the side wall of the container body to reduce the flow of cool air and the inflow of outside air from the drain, and the drains of a plurality of loaded containers are collected in the pit drain and the pit drain A water-seal drainage container with a structure in which a water-seal weir for shutting off cold air is submerged in the drainage of a container or a drainage reservoir communicating with a drainage port to prevent the outflow of cool air or the inflow of outside air (Japanese Utility Model No. 6-14057). Etc.
[0003]
The styrofoam fish box shown in FIG. 15 (a) is a container with a lid, and is a normal drainage type container having a drain port opened on the bottom surface. The styrofoam fish box shown in FIG. 15B is a normal drainage container without a lid. The styrofoam fish box shown in FIG. 16 (a) is a pit drainage fish box provided with a pit drain port that cuts through the side wall of the fish box. The styrofoam fish box shown in FIG. 16B is a pit water drainage fish box that combines pit drainage and water seal drainage.
[0004]
On the other hand, there are containers, such as a cooler box for fishing and leisure, in which a cock and a water stopcock are provided in advance on the container side wall. As another technique of this type, there has been proposed a method of forming a through hole in a side wall of a fish box or the like and providing a cock or blind plug (Japanese Utility Model Application No. 1-63617). In addition, the water ice transport box, live fish box, and the like shown in FIG. 17 do not have a drainage hole, and transport dissolved water, sewage, and filth in a container, and open and drop water at the time of arrival or when goods are sold out. In addition, as a method of avoiding the generation of melted water of ice itself, a method using a regenerator or a subdivided ice bag has been adopted for courier services, handbag souvenir boxes, dinner boxes, and the like.
[0005]
[Problems to be solved by the invention]
However, a normal drainage container provided with a drainage hole in advance and constantly drains dissolved water and sewage contaminates transport vehicles, refrigerated warehouses, stores, other products, and cargo handlers, impairing hygiene, aesthetics, and workability. . In addition, freshness is reduced due to cold air outflow or warm air inflow from the drain port which is always open, and the ice is easily melted and a large amount of ice is consumed. In addition, since many stages are loaded, the wastewater is sequentially dropped into the lower container and contaminates the product, thereby decreasing freshness and accelerating the melting of ice.
[0006]
The pit drainage container, which reduces cold air outflow and outside air inflow, does not solve the problem of constantly draining sewage. Therefore, it does not have the effect of pit drainage and presents the same defects as ordinary drainage type containers. Further, the water-sealed drainage container for preventing the outflow of cool air and the inflow of outside air has not solved the problem that the dissolved water or the sewage is always dripped.
[0007]
Containers with water stopcocks and blind stoppers on the side walls of cooler boxes and fish boxes for fishing and leisure use have a water stopcock structure consisting of a water stopcock inner and a water stopcock outer case. The cost is high, such as mounting and fixing to the through-hole with an adhesive or a tightening screw with packing. In addition, normal drainage and water stoppage are possible, but there is no water seal drainage function. Further, the formation of the water stopcock mounting hole requires a mounting hole forming cylinder through which the container penetrates the container side wall, and the number of moldings is reduced, resulting in high molding cost and high mold cost. Further, since the cock and blind plug protrude from the side wall of the container, the number of transportations increases and a dent failure of the water stopcock occurs, so that it is not adopted except for expensive containers and special applications.
[0008]
In addition, containers that store sewage and waste liquid in the container without drain holes have the disadvantage that the weight load and work load during transportation are large and the product re-contaminates with dissolved water or sewage and the freshness is reduced. With heavy labor. In addition, the cold storage agent and the ice in the ice bag have the disadvantage that the cost is high, the cold storage ability and the freshness holding ability are inferior, and the problem of disposal of the cold storage agent and the ice bag after arrival occurs.
[0009]
The present invention solves the above-mentioned problems of the prior art, and provides a water control function that is inexpensive and easily provided with a water freshening function capable of preventing a decrease in freshness, reducing the amount of ice used, hygiene, aesthetic appearance and workability. The present invention provides a synthetic resin container.
[0010]
[Means for Solving the Problems]
The present inventors have conducted intensive studies in view of such circumstances, and as a result, as a result of studying the container with a structure that does not protrude from the outer peripheral surface of the container body into the water stopcock mounting hole provided with the elastic force of the foam or the undercut structure at the bottom of the container body. The inventor has found that the intended purpose can be achieved by forming a water stopcock capable of controlling normal drainage, water sealing drainage and water stoppage from the outer side, and completed the present invention.
[0011]
That is, claim 1 of the present invention relates to a container main body formed of a foam, a water stopcock mounting hole formed by penetrating the lower part of the container main body from inside to outside, and a water stopcock mounting hole. A water stopcock that is fitted and sealed to seal the water stopcock mounting hole to control the water, wherein the water stopcock does not protrude from the outer peripheral surface of the container body, and the elastic force of the foam forming the container body is provided. And / or a synthetic resin foam provided with a water control function, characterized in that it is held and fixed by an undercut structure forming the water stopcock mounting hole.
[0012]
A second aspect of the present invention includes a foamed synthetic resin container provided with a water control function according to the first aspect, wherein the water control function is constituted by a normal drainage function and a water stop function.
[0013]
According to a third aspect of the present invention, there is provided a foamed synthetic resin container provided with a water control function according to the first aspect, wherein the water control function is constituted by a water seal drainage function and a water stop function.
[0014]
According to a fourth aspect of the present invention, the stopcock mounting hole is formed by penetrating the bottom wall surface of the container body from the inner bottom surface to the outer bottom surface. Contains a foamed synthetic resin container provided with a water function.
[0015]
Claim 5 of the present invention is characterized in that the water stopcock mounting hole is formed by penetrating the lower part of the side wall surface of the container body from the inside of the container to the outer surface of the container. The content includes a foamed synthetic resin container provided with the described water control function.
[0016]
Claim 6 of the present invention is characterized in that the water stopcock mounting hole is formed by a structure that connects a vertical drainage hole formed by traversing the side wall surface of the container body and the inside of the container. A foamed synthetic resin container provided with a water control function according to claims 1 to 3 is included.
[0017]
According to a seventh aspect of the present invention, the water stopcock mounting hole is formed by a molding piece having an undercut shape with respect to a molding release direction provided in a molding die of a foamed synthetic resin container. A foamed synthetic resin container provided with a water control function according to any one of 1 to 6, above.
[0018]
Claim 8 of the present invention is characterized in that the water stopcock is configured by using a water stopcock inner case and a water stopcock mounting hole as a water stopcock outer case. The content includes a foamed synthetic resin container provided with the described water control function.
[0019]
According to a ninth aspect of the present invention, the water stopcock is constituted by a water stopcock inner and a water stopcock outer case, and is fitted and held in the water stopcock mounting hole. The content is a foamed synthetic resin container provided with the water control function described in the section.
[0020]
A tenth aspect of the present invention includes a foam synthetic resin container provided with a water control function according to any one of the first to ninth aspects, wherein the water stopcock has a horizontal structure.
[0021]
The eleventh aspect of the present invention is directed to a foam synthetic resin container provided with a water control function according to any one of the first to ninth aspects, wherein the water stopcock has a vertical structure.
[0022]
A twelfth aspect of the present invention includes the foam synthetic resin container provided with a water control function according to any one of the first to ninth aspects, wherein the water stopcock has a spherical structure.
[0023]
A thirteenth aspect of the present invention is directed to a foamed synthetic resin container provided with a water control function according to any one of the first to ninth aspects, wherein the water stopcock has a screw structure.
[0024]
Claim 14 of the present invention contains a foam synthetic resin container provided with a water control function according to any one of claims 1 to 9, wherein the water stopcock has a blind plug detachable structure. .
[0025]
A fifteenth aspect of the present invention includes a foam synthetic resin container provided with a water control function according to any one of the first to fourteenth aspects, wherein the water stopcock has a water-sealed drainage structure. .
[0026]
According to a sixteenth aspect of the present invention, there is provided a foamed synthetic resin container having a water control function according to any one of the first to fifteenth aspects, wherein the water stopcock is an elastic body.
[0027]
According to a seventeenth aspect of the present invention, the water stopcock is formed by folding a hollow cylindrical body, and the water stopcock is formed by folding the hollow cylindrical body. Contains a foamed synthetic resin container provided with a water function.
[0028]
The invention according to claim 18 is characterized in that the water stopcock for water seal drainage is constituted by a difference in height level from the bottom of the opening inside the container and the opening outside the container of the hollow cylindrical body. A foamed synthetic resin container provided with a water control function according to any one of claims 1, 3, 4, 5, 7, 15, and 17 is included.
[0029]
The water control function according to any one of claims 1 to 18, wherein the water stop operation of the water stopcock is performed from the outer peripheral side surface of the container body in a loaded state of the container body. The content is a foamed synthetic resin container provided with.
[0030]
According to a twentieth aspect of the present invention, there is provided any one of the first to nineteenth aspects, wherein the sliding portion of the water stopcock and the inscribed surface of the water stopcock mounting hole are provided with unevenness for preventing water leakage. The content includes a foamed synthetic resin container provided with the described water control function.
[0031]
21. The foam synthetic resin container provided with a water control function according to any one of claims 1 to 20, wherein a water leakage preventing agent is applied to a sliding portion of the water stopcock. The contents.
[0032]
Claim 22 of the present invention is a container having a structure in which a container body formed of a foam and an upper portion communicate with an outer peripheral surface of the container body, and a suction port having an opening opening and a lower portion communicate with a drainage pool portion on an inner bottom surface of the container body. A water control function characterized by being formed by a hollow hole formed through the side wall of the main body or a hollow hole formed by standing and holding a hollow cylindrical body on the inner surface of the side wall of the container main body. The container contains the foamed synthetic resin container.
[0033]
The foam having a water control function according to any one of claims 1 to 22, wherein at least one air inlet is provided at an upper portion of the container body to perform forced drainage. The contents include a synthetic resin container.
[0034]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention has no protrusions on the outer surface of the foamed synthetic resin container, does not cause an increase in the volume required for transportation and an increase in transportation costs, and the water control operation is performed from the outer peripheral surface of the container in a stacked stage and in a loaded state. By disposing a water stopcock capable of performing the above, dissolved water, sewage, waste liquid, and the like generated in the container are normally drained, water-sealed drainage, and stopped when necessary for distribution.
[0035]
In addition, the present invention does not require the molding of a new mold even if the container is formed by a conventional mold or a conventional structure, and is modified into the container structure of the present invention by a simple mold modification of the conventional mold.・ Has advantages that can be provided.
[0036]
The material of the foamed synthetic resin container of the present invention refers to a synthetic resin that can be molded into a foamed synthetic resin container, such as styrene foam, foamed polyethylene, foamed polypropylene, and foamed polyurethane, but a low-fold foamed synthetic resin that does not require heat insulation or heat retention. The water control function and the water control structure of the present invention are provided when it is a container or a synthetic resin container molded by injection molding and it is desired to normally drain, drain, or stop the drainage and waste liquid in the container at any time. It is also possible that they belong to the invention. The main use is made of foam synthetic resin single material, such as freshness-keeping transport containers for fresh seafood, vegetables and flowers, processing and transport containers for pickles and processed foods, return boxes and leisure boxes for home delivery and dinner materials, etc. There is no particular limitation on a container with a skin in which a sheet material is integrated on the inner surface or outer surface of a molded container or a foamed synthetic resin container as long as the object of the present invention is exhibited.
[0037]
Although the stopcock is a name generally formed of a stopcock inner and a stopcock outer case, in the present invention, for convenience of explanation, the stopcock mounting hole is a stopcock outer case. A water stopcock structure formed by inserting a water stopcock inner into a water stopcock mounting hole that also serves as a water stopcock structure, and a water stopcock structure and water stopcock composed of a water stopcock mounting hole and a hollow cylindrical water stopcock inner A generic name for a water stopcock structure or the like that is configured by inserting and inserting a water stopcock formed by a water stopcock outer case and a water stopcock inner into the mounting hole. In some cases, the stopcock inner refers to an inner stopcock, such as a hollow cylindrical body, and is referred to as a stopcock.
[0038]
As one mode of the water stopcock of the present invention, a water stopcock mounting hole is fitted with a water stopcock inner hole into a water stopcock mounting hole also serving as a water stopcock outer case, thereby fixing and fixing a low cost normal drainage structure. A stopcock is formed. Further, a combination of the water stopcock mounting hole and the water stopcock inner with a water seal structure forms a water stopcock with a water seal drainage structure.
[0039]
In this configuration, the airtight packing or the O-ring is formed by inserting and holding and fixing the water stopcock to the elastic force of the foam forming the water stopcock mounting hole and / or the undercut structure forming the water stopcock mounting hole. The water stopcock is installed in the water stopcock mounting hole with high airtightness and does not leak water. Further, in order to smoothly prevent water leakage and control the operation of the water stopcock, if a lubricating water leakage preventing agent is applied, durability and operability are excellent. In the case of a food container, the water leakage preventing agent is not particularly limited as long as it has water repellency and lubricity, such as liquid paraffin or edible oil such as butter specified in the Food Sanitation Law. In addition, in order to improve the adhesion between the water stopcock and the water stopcock mounting hole and to prevent water leakage, it is also appropriately selected to add irregularities or embossed patterns to the outer periphery of the water stopcock inner or the waterstop water mounting hole inner surface.
[0040]
The mutual insertion shape and the mounting dimensional relationship between the water stopcock mounting hole and the water stopcock inner are appropriately selected from the synthetic resin material, the expansion ratio, the elasticity of the foam, the undercut shape, and the insertion structure, and substantially water leakage is performed. There is no particular limitation as long as the condition that does not hinder the water control operation is maintained, but at least the stopcock mounting hole dimensions and the stopcock external dimensions ensure the forced fitting state of equal dimensions or more desirable. The undercut structure is to form irregularities or a reverse taper that hinders mold release in the mold release direction, but the mold is released using the elastic force and restoring force of the foam. In the injection molding, an undercut structure is formed by adding an expansion / contraction mechanism to the undercut molding piece.
[0041]
When the water stopcock is composed of the water stopcock inner and the water stopcock outer case, the connection between the water stopcock mounting hole and the water stopcock outer case is made by the elastic force of the foam and the insertion of the undercut shape. In addition to the relationship, an adhesive that does not attack the foamed synthetic resin may be used in combination.
[0042]
The material of the water stopcock is not particularly limited, but is preferably made of a synthetic resin, and it is desirable to use a resin equivalent to the material of the container from the viewpoint of recyclability of the container. From the viewpoint of cost, a recycled resin made of the same material as the container is desirable. Addition of elastic force to the water stopcock inner is desirable from the viewpoint of hermetic fixability and water leakage prevention, and a foamed resin or rubber elastic material equivalent to the container material can be employed. Since foam synthetic resin containers are usually used as one-way disposable containers, low cost needs are high, and appropriate and inexpensive containers are selected from the balance between performance and cost of water stopcocks in accordance with the actual distribution situation.
[0043]
The water control function or the water control operation of the present invention means that the melted water, sewage, waste liquid, etc. of ice in the container is discharged out of the container by opening and closing a water stopcock provided at the container at any time during distribution. Refers to functions and operations for stopping water.
[0044]
For drainage, normal drainage with a stopcock opened and opened and drainage, and a water seal weir to block cold air are submerged in the drainage drain connected to the drainage port to prevent cold air outflow and outside air inflow during drainage. It is communicated with a water seal drain that discharges only drain water, a pressurized drain that injects pressurized air through an air blow hole provided in the container to accelerate drainage from the water stopcock, and a drain reservoir provided in the container. There is suction drainage that is sucked through the suction hole. Water is stopped by stopping suction and drainage except for closing the water stopcock.
[0045]
The water control operation in the present invention is mainly performed by selecting a water stoppage structure combining a normal drainage function and a water stoppage function and a water stopcock structure combining a water seal drainage function and a water stoppage function. Drainage is added or suction drainage is adopted.
[0046]
In addition, when a water stopcock mounting hole is formed on a container and a water stopcock is not inserted, there is an advantage that the water stopcock mounting hole can be supplied as a conventional container used as a drainage opening, and the same container is used. In addition, a water stopcock with a normal drainage function and a water stop function, a water stopcock with a water seal drainage function and a water stop function, and a container with a conventional drain hole can be shared, It is also possible to appropriately select and supply according to the supply cost. The molding cost of a conventional container and a container with a stopcock mounting hole are exactly the same, and there is an advantage that the choice of containers increases. In a production area such as a fishing port, the stopcock is usually drained or sealed drainage, the operation is stopped at the time of shipment, and after arrival, the drainage is continued or stopped.
[0047]
The conventional water stopcock is composed of a water stopcock inner and a water stopcock outer case, and further includes a water stopcock operation lever, which is one of the high cost factors of the conventional water stopcock container. . The water stopcock of the present invention has a low cost by simply inserting and inserting the water stopcock inner case into the water stopcock mounting hole because the water stopcock mounting hole also serves as the water stopcock outer case. A water stopcock structure can be formed.
[0048]
In addition, a water stopcock for water seal drainage can be formed by inclining the water stopcock mounting hole or forming a part of the water stopcock mounting hole with a weir structure by the configuration of the water stopcock mounting hole and the water stopcock inner. . For containers requiring durability, such as a cooler box, a water stopcock composed of a water stopcock inner and a water stopcock outer case is also possible. It is desirable to have a mounting structure utilizing elastic force.
[0049]
There are various types of stopcock structures and shapes depending on the wall thickness of the container body, the direction of drainage, the drainage method (normal drainage or watertight drainage), and the structural relationship with the stopcock mounting holes. It is appropriately designed and adopted depending on the application, wall thickness, cost, and the like. The main stopcock structure can be a horizontal structure, a vertical structure, a spherical structure, a screw structure, a blind plug attachment / detachment structure, a hollow cylindrical body folding structure, etc. .
[0050]
The number of stopcocks is not particularly limited as long as it is at least one place. However, for containers such as fish and shellfish and vegetables and flowers that generate a lot of sewage and filth, the sewage may block the drainage path, so two for safety. It is desirable to provide the above. It is also desirable on the bottom surface of the container to provide a flow gradient or a water guiding groove on the bottom surface of the container in order to efficiently drain water.
[0051]
When the water stopcock mounting hole is formed by penetrating the bottom wall surface of the container body from the inner bottom surface to the outer bottom surface, the water stopcock mounting hole is formed by a cavity mold container of the container molding die. Attach a molded piece such as an undercut structure or a reverse taper that is similar to the outer shape of the water stopcock inner to the bottom, and the elasticity of the foam, which is the characteristic of the foamed resin, and the foam is highly flexible due to residual heat during molding when releasing from the mold While having a restoring property, a water stopcock mounting hole having an undercut shape in a uniaxial or biaxial direction is formed in the bottom wall surface of the container without using a cylinder mechanism.
[0052]
The water stopcock mounting hole formed by this configuration can form a biaxial undercut structure of an undercut structure in the mold release direction and an undercut structure also in the outer peripheral direction of the container. The holding and fixing force in the biaxial direction acts to insert and install the water stopcock from the container bottom direction or the container side wall direction, so that it does not fall off or leak without using an adhesive. In addition, since molding is performed using the present mold structure, there are no molding defects such as a reduction in the number of molding operations and an increase in the molding cycle.
[0053]
When the stopcock mounting hole is formed by penetrating the lower part of the outer wall surface of the container body from the inside of the container to the outer surface of the container, the stopcock is reciprocated from the cavity mold side surface of the molding die. Stop the undercut structure in the cylinder release direction by utilizing the elastic force of the foam, which is a characteristic of the foamed resin, and the mold release time while the foam has high flexibility and resilience due to the residual heat of molding. Form faucet mounting holes.
[0054]
If you want to install multiple water stopcocks on the outer wall, you can prevent the decrease in the number of molds by concentrating the cylinder on the side of the cavity mold. When it is desired to provide a container, it is possible to prevent a decrease in the number of moldings by combining with a structure in which a water stopcock mounting hole having an undercut structure is provided on the bottom wall surface of the container.
[0055]
If the stopcock mounting hole is made to communicate with a pit drain formed by traversing the outer wall surface of the container body, the pit drain hole and the inside of the This is achieved by attaching a molded piece having an undercut structure substantially similar to the outer shape of the water stopcock inner at a position communicating with the bottom surface. Usually, the pit drainage port of the fish box is often provided at the corner of the container, and the stopcock installation direction can be formed in a shape that crosses the corner in two lateral directions. This can be performed from two aspects. It is also possible to form water from the corner toward the center of the container and perform the water control operation from the corner.
[0056]
Conventionally, a water stopcock that penetrates the container side wall is fixed by fixing the water stopcock outer case and the water stopcock mounting hole with an adhesive or by sandwiching and fixing the side wall surface with a screw structure. The water stopcock structure that penetrates the container side wall of the present invention has a water stopcock mounting hole even when the water stopcock mounting hole is a water stopcock outer case or when a water stopcock with a water stopcock outer case is adopted. It is configured to hold and fix by fitting the water stopcock into the undercut structure that forms the elastic force of the foam to be formed and / or the water stopcock mounting hole.
[0057]
The pressure air blowing port for forced drainage should have pores that do not affect the cooling performance during normal cold transport, and if it is formed along the joint between the container lid and the container body, the air resistance increases and the cooling performance Therefore, it is desirable that forced drainage operation can be performed from the outer peripheral surface even in a loaded state. The size of the compressed air blowing port is desirably about 1 mm to about 5 mm because it achieves the purpose, but is not particularly limited.
[0058]
The suction drain port connected to the hollow cylindrical body for suction and drainage preferably has a diameter approximately equal to the inner diameter of the hollow cylindrical body for suction and drainage, and preferably has an inner diameter of about 3 mm to 7 mm. It is desirable that the suction / drainage port be opened on the top surface of the lid of the container or formed along the meshing portion between the lid of the container and the container body, since the cooling performance is ensured and the suction / drainage operation can be performed from the outer peripheral surface even in the loaded state. The suction operation is performed by a hose connected to a vacuum pump or a vacuum pump. Further, a method of pushing air from the pressure air inlet and draining water from the suction outlet is also possible, and a preferable method is adopted according to the situation.
[0059]
【Example】
Hereinafter, the present invention will be described in more detail based on examples of a styrofoam fish box, but these do not limit the present invention at all.
[0060]
Example 1
FIG. 1 is a schematic view showing an embodiment of the present invention, in which a biaxially-opened faucet mounting hole 3A is formed by penetrating the bottom wall surface of the container body 1 from the inner bottom surface to the outer bottom surface, and each has a biaxially-opened stopper. A horizontal structure water drainage stopcock 10 having a water tap mounting hole 3A as a waterstop outer case is inserted, held and fixed. The biaxially-opened stopcock mounting hole 3A is open in two axial directions of the bottom surface and the side surface, and forms an undercut structure 8 in each of the two axial directions. The water stopcock 10 can be inserted and inserted from the bottom surface and the two axial directions of the bottom surface. Further, a water stopcock with a water stopcock outer case having a cross-sectional structure substantially the same as that of the biaxial opening water stopcock mounting hole 3A can be inserted and mounted.
[0061]
The left-side sectional view (a) shows a drainage state in which the drain port 2 and the stopcock drainage groove 10B are connected, and the right-side sectional view (c) has an O-ring 25 attached to the undercut portion 8 in the direction of blocking water leakage. The water stoppage state of the structure in which the water stopcock 10 is provided and the waterproof packing 26 is attached to the inner surface is shown. The front view (b) shows a front mounting state in which the water stopcock 10 in the water stop state is held and fixed in the water stopcock mounting hole 3 having the undercut structure 8 in the bottom direction.
[0062]
The mounting dimensions of the biaxially-opened water stopcock mounting hole 3A and the water stopcock 10 are such that the water stopcock mounting hole has an inner diameter of 17.6 mm and an internal diameter of 17.6 mm for the water stopcock 10 to open downward. The front opening width of the undercut portion 8 is 13.5 mm, the outermost diameter of the undercut portion 8 formed on the horizontal axis in the shape of a circular dish is 21.5 mm, and the water stopper side convex protrusion is held and fixed at 22 mm. . In order to ensure the close contact between the stopcock 10 and the stopcock mounting hole 3A on the innermost side, the depth of the stopcock convex protrusion 10c is larger than the depth molding dimension of the circular recessed undercut portion 8 of the stopcock mounting hole. Make the size large and press.
[0063]
As described above, since the water stopcock 10 has the same overall size or a larger size than the biaxially-opened water stopcock mounting hole 3A, the water stoppage is prevented by rotating the water stopcock 10 right and left without leaking from the mutual insertion portion. When performing an operation, it slides smoothly because it is held by the elastic force. In the water control operation, the operation groove 10A is opened and closed by a driver or the like from the side of the container. In this configuration, the water can be drained and stopped by reversing 90 degrees, and the opening and closing direction is displayed on the side of the container as necessary. The water stopcock mounting hole 3A is formed in an undercut structure with a molding piece having substantially the same shape as the water stopcock 10 that is opened on the side of the container, and the number of moldings is also reduced. An inexpensive container that does not reduce the molding cycle can be provided. Further, a semicircular air inlet 20 having an outer diameter of 2 mm is provided on both sides of the engagement portion between the container body 1 and the lid 1A to enable forced drainage by air pressure.
[0064]
Example 2
2A and 2B are schematic views of the present embodiment, and FIG. 2A is a three-dimensional cross-sectional view of the water stopcock 10 shown in FIG. 1A and shows a structural example of an operation groove 10A, a drain groove 10B, and a fixed convex portion 10C. I have. (B) The figure shows an example of a structure in which the hollow hole of the drain groove 11B is arranged at the center of the horizontal stopcock 11 with an O-ring. The water stopcocks are formed by inserting and fixing the water stopcock inners 10 and 11 into the water stopcock mounting holes 3A which also serve as water stopcock outer cases.
[0065]
Example 3
FIG. 3 is a schematic view of the present embodiment, in which both ends of a horizontal structure water stopcock 12 are formed in an arc shape, and a normal drainage is inserted and held in a biaxial opening water stopcock mounting hole 3A also serving as a water stopcock outer case. This is an example of the structure. In this configuration, a holding projection is not required in the horizontal axis direction of the water stopcock 12, and both ends of the water stopcock 12 are sandwiched by the undercut structure 8 on the container side. The drain direction is an example in which the container is directed downward. The water control operation is performed in the operation groove 12A.
[0066]
Example 4
FIG. 4 is a schematic view of the present embodiment, showing another correspondence of FIG. 1. FIG. 4 (b) is a right sectional view, in which a drainage preliminary hole 2B is provided and the drainage port 2 is not formed through a container. . The left cross-sectional view (a) shows a structural example in which the bottom of the preliminary drainage hole 2B is cut out to serve as the drainage port 2 and the water stopcock 10 can be attached depending on the use or destination. Alternatively, the bottom of the preliminary drainage hole 2B may be cut out and used as the drainage port 2 to form a conventional fish box. Thus, even if the containers have the same shape, a fish box without a drain port and a fish box provided with a normal drainage function and a water stop function can be selected according to the market market and season according to the actual distribution situation.
[0067]
Example 5
FIG. 5 is a schematic view of the present embodiment, in which a water stopcock 13 having a horizontal structure is attached to a wall stopcock mounting hole 3B serving as a water stopcock outer case on a container side wall. The fitting dimensions are equivalent to or larger than the water stopcock mounting hole 3B so that the water stopcock 13 is equivalent to or larger in size for holding and fixing and preventing water leakage. By eccentricizing the drain port 2 on the side wall of the container and the water stopcock drain hole 3B, water can be stopped and drained. Molding is performed by reciprocating the cylinder of the undercut molding piece. The water stopcock 13 can be a water stopcock with a water stopcock outer case, and in this case also, the undercut portion 8 is a means for water leakage prevention and holding and fixing.
[0068]
In addition, the outer peripheral shape of the water stopcock 13 may be appropriately selected so that the whole is formed to have a reverse taper and the undercut portion 8 is omitted or used together. The water control operation is performed by rotating the 13A groove left and right by a driver or the like. It is also possible to form a thin wall without penetrating the drain port 2 and form it as a container without a drain hole, and when a water stopcock is required, it is also possible to penetrate the thin portion of the drain port 2 to form a container with a water stopcock.
[0069]
Example 6
FIG. 6 is a schematic view of the present embodiment, in which a vertical water stopcock 14 is attached to a vertical water stopcock mounting hole 3C also serving as a water stopcock outer case on the bottom wall surface of the container. The fitting size is the same as or larger than the size of the water stopcock mounting hole 3B, and the undercut portion 8 is provided to hold and fix the water stopcock and prevent water leakage. By eccentrically aligning the drain port 2 on the bottom of the container and the stopcock drain hole 13B, water can be stopped and drained. The molding is performed by providing an undercut molding piece in the cavity mold. The fitting is performed from below the container and drained downward, but drainage to the side surface can also be performed by bending the drain hole 14B. In the water control operation, an example is shown in which 14A is rotated left and right by a lever from the side of the container.
[0070]
Example 7
FIG. 7 is a schematic view of this embodiment, in which a water stopcock 15 having a spherical structure is mounted on a spherical water stopcock mounting hole 3D serving also as a water stopcock outer case on the bottom wall surface of the container. The insertion dimension is equal to or larger than the water stopcock mounting hole 3D, and the lower part of the sphere is used as an undercut portion 8 for holding and fixing and for preventing water leakage. Water is stopped and drained by eccentric rotation of the drain port 2 on the bottom of the container and the stopcock drain hole 15B. The molding is performed by providing an undercut molding piece in the cavity mold. Fitting is performed from below the container and drained downward, but drainage to the side is also possible by bending the drain hole 15B. The water control operation is performed by rotating the container from the side, and the handle 15A is not essential.
[0071]
Example 8
FIG. 8 is a schematic diagram of the present embodiment, in which a blind plug-removable stopcock 16 having a horizontal structure is attached to a detachable stopcock mounting hole 3E which also serves as a stopcock outer case. The drainage operation is performed by attaching and detaching the blind faucet inner 16A. Waterproofing is performed by inserting the undercut portion 8 and the convex portion 16C. In addition, the outer surface of the detachable stopcock 16 has a screw structure, and the inner surface of the detachable stopcock mounting hole 3E having a prepared hole diameter of the screw is replaced with a female screw. You can also. (Not shown)
[0072]
Example 9
FIG. 9 is a schematic view of the present embodiment, in which a screw type water stopcock 19 with a water stopcock outer case 19E is fitted into a biaxially-opened water stopcock mounting hole 3A. Since the water stopcock outer case 19E is forcibly inserted into the biaxially-open water stopcock mounting hole 3A having the undercut portion 8, water is not leaked, and water is stopped or drained depending on whether or not the water outlet 2 and the water drain hole 19B are connected. It is an example.
[0073]
Example 10
FIG. 10 is a schematic view of the present embodiment, in which a horizontal water seal drain stop cock 18 is fitted into the water seal drain stop cock attachment hole 3H. The drainage flowing from the drainage port 2 is collected in the drainage pool part 9 and the water seal weir 9 of the horizontal water seal drain stop cock 18 is submerged. Is configured. As a result, there is no outflow of cool air or inflow of outside air from the drain port 18B. The undercut portion 8 and the O-ring 25 provide waterproofing and fitting of the water seal drainage stopcock mounting hole 3H and the horizontal water seal drainage stopcock 18. Thus, the horizontal type water seal drainage stop cock 18 can exhibit the water seal drainage function and the water stop function. A waterproof packing 26 is provided for waterproofing the inner surface of the water stopcock 18. The horizontal water seal drain stop cock 18 can be easily formed, for example, by integrating two parts having a sectional shape shown in FIG.
[0074]
Example 11
FIG. 11 is a schematic view of the present embodiment. In the schematic view of the embodiment according to claim 6, a vertical drainage stopcock mounting hole 3I is formed by connecting the vertical drainage port 2A and the inside of the container, and the vertical drainage is performed. The water stopcock 17 was fitted and held. As for the drainage, the drainage in the container and the drainage of the upper container flow in from the pit, merge with the drainage of the present container, gather in the pit drain stop cock attachment hole 3I, and drain downward. Drainage and water stoppage are performed in the operation groove 17A. In this configuration, a water-sealed pit drainage container is formed by using a water-sealed pit drainage stopcock. (Not shown)
[0075]
Example 12
FIG. 12 is a schematic view of the seventeenth embodiment, showing a water stopcock structure in which the water stopcock 20 is formed by folding a hollow cylindrical body. The hollow foldable tubular body 20 connected to the drain port 2 was held and fixed in a hollow body stopcock mounting hole 3F of an undercut structure formed on the bottom surface and the wall surface of the container body 1. At the time of drainage, the water stopcock 20 of a hollow cylindrical body is opened downward to discharge the drainage in the container, and the water stoppage is restored. This configuration can be implemented by improving an inexpensive commercially available straw with bellows. Water leakage with the drain port 2 may be connected by an elastic force or an adhesive.
[0076]
Example 13
FIG. 13 is a schematic view of the embodiment of claim 18, wherein the water stopcock 21 is a hollow cylindrical body, and the water seal drainage is performed by opening the opening of the hollow body water sealing faucet 21 outside the container. The structure is such that water is stopped by closing the opening. It is connected to the drain port 2 in the container, and is opened outside the container above the drain surface in the container to form a water-sealed drain structure by this head. A V-shaped holding groove 21A for holding the opening of the water stopcock 21 in an open state and a holding groove 21B for holding the opening of the hollow water sealing faucet 21 in a closed state are provided on the side surface of the container. Water seal drainage and water stoppage are formed at the mounting positions of 21A and 21B. The holding grooves 21A and 21B have an undercut structure to hold and fix the water seal type water stopcock 21. The hollow cylindrical body is also obtained by improving a commercially available foldable straw.
[0077]
Example 14
FIG. 14 is a schematic view of an embodiment according to claim 22, wherein a container body formed of a foam and a suction port 31 having an upper portion communicating with the outer peripheral surface of the container body and a lower portion communicating with the inner bottom surface of the container body. (A) showing the hollow hole 22A formed through the side wall of the container body provided by the drawing, and the figure showing the hollow hole 22B formed by standing the hollow cylindrical body on the side wall surface of the container body ( b).
[0078]
This structure is performed by a method of draining by suction and drainage from a suction port 31 communicating with the outer peripheral surface of the container body, and a method of pressurizing compressed air from an air injection port 30 and draining from the suction port 31. In the structure shown in FIG. 7A, a flexible forming piece communicating with the drainage reservoir 5 and the hollow hole 22A is formed at the tip of the hollow hole forming lot pin by feeding and retracting the forming piece. The structure shown in FIG. 3B is a locking groove having an undercut structure in which the lower end of a hollow hole 22B, which is a hollow cylindrical body such as a commercially available straw, is immersed in the drainage reservoir 5 to hold and fix the hollow body 22B on the inner wall of the container. Is provided and inserted and held.
[0079]
【The invention's effect】
As described above, according to the present invention, a synthetic resin container is foamed with a water stopcock having a water control function capable of arbitrarily draining water, water sealing drainage and water stoppage in accordance with the actual distribution from the production area to the over-the-counter sale. Due to the extremely simple structure of holding and fixing the elastic force of the body and / or the undercut structure that forms the stopcock mounting hole, the cost of forming the container, the cost of the stopcock and the stopcock are lower than those of the conventional container with the stopcock. The installation cost can be greatly reduced, and the water such as the normal drainage, the water seal drainage, and the vertical drainage fish box, which constantly drains the dissolved water, sewage, and filth in the container, regardless of the location, keeps freshness and sanitary beauty. Problems such as surface and material handling and the uneconomical effect of excessive melting of ice are surely solved.
[0080]
Further, in the use of the conventional container with a water stopcock, the adoption has been limited due to problems such as high cost and projecting of the water stopcock from the side wall, but by using the container structure of the present invention, an inexpensive souvenir box can be obtained. It can also be widely used for air conditioners, cooler boxes, courier services, containers for passing dinner materials, and boxes for transporting water and ice, such as swordfish and bonito. In addition, using the water stopcock and the air pressure inlet and the suction port of the present invention, seawater can be exchanged during the distribution of the live fish transport box to enable remote transport, and cold air is also used as a suction port for vacuum pre-cooling of vegetables and flowers. It can also be used as a replacement or gas replacement container.
[0081]
Further, even in the case of a conventional container such as a fish box which is currently being formed, it is not necessary to start a new mold, and the container provided with the water control function of the present invention can be easily and inexpensively provided by a small mold modification. There is an advantage that can be modified. In addition, a fish box molded with the same shape of water stopcock mounting hole is suitable for the production situation, market price, distribution of fish species, etc. Can be selected, and if the stopcock is not installed in the stopcock mounting hole, it can be supplied as it is as a normal drainage type container. Its usefulness as a container for keeping freshness is extremely large.
[0082]
Further, the water stopcock structure of the present invention, such as a water stopcock inner hole is formed by inserting and inserting a water stopcock inner with a water stopcock mounting hole as a water stopcock outer case. Also applies to synthetic resin containers. In this case, the elastic force of the foam forming the container body and / or the fitting dimension and the undercut shape dimension of the undercut structure forming the water stopcock mounting hole are in a state in which substantially no water leakage or liquid leakage occurs. It is sufficient if it is secured, and it is appropriately determined from the structure of the applied container, the properties of the applied resin, the use, and the like. Thus, the present invention can be widely applied to foamed synthetic resin containers and injection molded resin containers.
[Brief description of the drawings]
1 (a), 1 (b) and 1 (c) are schematic views showing one example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 2 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 3 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 4 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 5 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 6 is a schematic view showing another example of a synthetic resin container structure provided with a water control function of the present invention.
FIG. 7 is a schematic view showing another example of the foamed synthetic resin container structure provided with the water control function of the present invention.
FIG. 8 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 9 is a schematic view showing another example of the foamed synthetic resin container structure provided with the water control function of the present invention.
FIG. 10 is a schematic view showing another example of the foamed synthetic resin container structure provided with the water control function of the present invention.
FIG. 11 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 12 is a schematic view showing another example of the foamed synthetic resin container structure provided with the water control function of the present invention.
FIG. 13 is a schematic view showing another example of the foamed synthetic resin container structure provided with the water control function of the present invention.
FIG. 14 is a schematic view showing another example of a foamed synthetic resin container structure provided with a water control function of the present invention.
FIG. 15 is a schematic view showing the structure of a conventional foam synthetic resin container.
FIG. 16 is a schematic view showing another example of the structure of a conventional foam synthetic resin container.
FIG. 17 is a schematic view showing another example of the structure of a conventional foam synthetic resin container.
[Explanation of symbols]
1 container body
1A Container lid
2 drainage outlet
2A pit drain
2B Spare drain
3 Stopcock mounting hole
3A biaxial opening stopcock mounting hole
3B Wall stopcock mounting hole
3C Vertical stopcock mounting hole
3D spherical stopcock mounting hole
3E Removable stopcock mounting hole
3F Hollow water stopcock mounting hole
3G hollow body water seal drain stop cock installation hole
3I Vertical drainage stop cock installation hole
4 drainage
5 Drainage pool
6 ice
7 Water ice transport bag
8 Undercut section
9 Water seal weir
10, 10A, 10B, 10C Horizontal stopcock
11, 11A, 11B, 11C Horizontal stopcock with O-ring
12, 12A, 12B, 12C, tubular horizontal stopcock
13, 13A, 13B, 13C Horizontal stopcock for wall
14, 14A, 14B, 14C Vertical stopcock
15, 15A, 15B, 15C Spherical stopcock
16, 16A, 15C Detachable stopcock
17, 17A, 17B, 17C Pit drain stop cock
18, 18A, 18B, 18C Horizontal type water seal stopcock
19, 19A, 19B, 19C, 19E Stopcock with outer case
20
21, 21A, 21B Hollow body water sealing faucet
22A
22B
25 O-ring
26 Waterproof packing
30 air inlet
31 Suction port