【０００１】
【発明の属する技術分野】
本発明は、貯蔵室の前面開口を開閉する断熱扉の裏側に内扉を設けた内扉付き貯蔵庫に関する。
【０００２】
【従来の技術】
冷蔵庫の貯蔵室の前面開口を開閉する前面扉の裏側に内扉を設けた内扉付き冷蔵庫がある（例えば、特許文献１、２、３参照）。特許文献１のものは、前面扉の裏側にドアポケットを備え、内扉は左右２枚構成であって前面側に内ポケットを備え、それぞれの内扉は横方向へ回動可能に軸支持されている。
【０００３】
また、特許文献２のものは、前面扉の裏側の凹部に嵌り込むように内扉が設けられ、前面扉と内扉は同軸にて回動する構成である。そして、前面扉の裏側と内扉の裏側面の少なくとも一方に収納ポケットが設けられている。また、前面扉の取っ手部には、前面扉を単独に開閉操作できる状態と、内扉と一体的に開閉操作できる状態との２様の開閉操作が可能な構成を形成している。更に、内扉を板状の透明体とすることで、冷蔵室内を外部から目視にて確認できると記載されている。
【０００４】
また、特許文献３のものは、前面扉の裏側に内扉が設けられ、前面扉の裏側には収納ポケットは形成されず内扉の前後両面にのみ収納ポケットが設けられており、前面扉の裏側に収納ポケットが形成されない点で特許文献２のものと共通する。そして、前面扉の裏側又は内扉内にダクトを形成して、内扉の前後両面の収納ポケットへ冷気循環させる構成である。前面扉は内扉とは独立して開くことができるとともに、内扉は上下に分割されていて前面扉の取っ手の握部の握り方によって所望の内扉を開くことができる構成である。
【０００５】
【特許文献１】
特開２００１−２８０８２０号公報（第１〜２頁、図１〜２）
【特許文献２】
特開２００１−１０８３５７号公報（第１〜３頁、図１〜４）
【特許文献３】
特開２０００−６５４５９号公報（第１〜２頁、図１〜６）
【０００６】
【発明が解決しようとする課題】
特許文献１のものは、内扉は左右２枚構成であるため前面扉と同時に開閉できず、内扉の後方の貯蔵室内への物品の出し入れや、貯蔵室内の物品の確認を行う場合は、必ず前面扉を開いてから内扉を開くように２回の操作が必要であり、不便が伴う。これに対して特許文献２のものは、前面扉を単独に開閉操作できる状態と内扉と一体的に開閉操作できる状態との２様の開閉操作が可能であるが、前面扉と内扉は同軸にて回動する構成であるため、内扉の軸支持部分は前面扉の裏側周縁に取り付けたパッキング材によるシール部分を通して延びるため、この部分のシール構造が複雑化する問題がある。また特許文献３のものは、前面扉の裏側のダクト形成によって内扉の前後両面の収納ポケットへ冷気循環させる効果があるが、ダクト形成が必要となり、前面扉の裏側には収納ポケットは形成されない。また内扉内にダクトを形成すれば内扉の構成も複雑化する問題がある。
【０００７】
本発明はこのような点に鑑み、内扉を開かなくても貯蔵室の貯蔵状態が目視可能であり、前面扉を単独に開閉操作できる状態と内扉と一体的に開閉操作できる状態との選択が可能な前面扉と内扉との二重扉構成を採るが、前面扉はその裏側周縁部に取り付けたパッキングによるシール構成が簡単である内扉付き貯蔵庫を提供するものである。
【０００８】
【課題を解決するための手段】
本発明の内扉付き貯蔵庫は、貯蔵庫本体内に前面開口の貯蔵室が形成され、前記貯蔵室の前面開口を右開き又は左開きに開閉する断熱扉が前記貯蔵庫本体に回動自在にヒンジ装置によって支持され、前記貯蔵室の上前部には下方へ冷気を吹き出す冷気吹き出し口が設けられ、前記断熱扉はその裏面に複数段の物品収納棚を備え、前記貯蔵室の前記断熱扉の裏側には前記ヒンジ装置側と同じ側で前記断熱扉に回動自在に支持された内扉を設け、この内扉はその前面に小物収納棚を備えて前記貯蔵庫の前面開口を略全体的にカバーする大きさの透明な合成樹脂板で構成され、前記内扉は前記断熱扉に対して吸着保持される永久磁石装置を備え、前記貯蔵庫本体には前記断熱扉の前面側から操作可能な操作部によって作動して前記内扉を前記貯蔵庫の前面開口をカバーするロック状態とロック解除状態とに切り替えるロック装置を設け、前記ロック状態では前記内扉の上端が冷気吹き出し口に対応して吹き出す冷気が前記内扉の前後両側に分流する位置をとり、前記ロック解除状態では前記永久磁石装置による吸着のまま前記断熱扉の開閉と共に前記内扉が開閉され、前記ロック状態では前記永久磁石装置による吸着に抗して前記内扉を残したまま前記断熱扉を開くことができることを特徴とする。
【０００９】
これによって、前面扉を単独に開閉操作できる状態と内扉と一体的に開閉操作できる状態との選択が可能な前面扉と内扉との二重扉構成を採るが、内扉を開かなくても断熱扉を開くだけで貯蔵室の貯蔵状態が目視可能であり、無益な冷気漏洩が抑止できる。また、内扉が冷気の分流機能を有するため、特別な分流装置の構成を採る必要もなくなる。そして、頻繁に使う物は断熱扉の裏側の物品収納棚部や内扉の前面側の小物収納棚部に収納すればよく、ここに収納されたものは、断熱扉と内扉間を流れる冷気によって冷却され、貯蔵上問題はない。
【００１０】
また、前記内扉は、前記断熱扉の裏側周縁に取り付けたパッキングで囲まれた内側で前記断熱扉に回動自在に支持されたことを特徴とする。これによって、内扉は断熱扉の周縁パッキングの内側に取り付けられているため、このパッキングによるシール機能の阻害がなく、断熱扉による本来の断熱効果が低下せず、むしろ内扉によって冷蔵庫全体の断熱効果が向上する。
【００１１】
また、本発明の内扉付き貯蔵庫は、貯蔵庫本体内に前面開口の貯蔵室が形成され、前記貯蔵室の前面開口を開閉する断熱扉が前記貯蔵庫本体に回動自在に支持され、前記貯蔵室の上前部には下方へ冷気を吹き出す冷気吹き出し口が設けられ、前記貯蔵室の前記断熱扉の裏側には回動自在に支持された内扉を設け、前記内扉の上端が冷気吹き出し口に対応して吹き出す冷気が前記内扉の前後両側に分流する位置をとることを特徴とする。
【００１２】
これによって、内扉が冷気の分流機能を有するため、特別な分流装置の構成を採る必要もなく、冷気配分機構が簡素化される。そして、断熱扉の裏側の物品収納棚部に収納した物品は、断熱扉と内扉間を流れる冷気によって冷却され、貯蔵上問題はない。
【００１３】
【発明の実施の形態】
次に、本発明を貯蔵庫の一種である冷蔵庫について説明する。各図は本発明の実施形態を示しており、図１は本発明に係る冷蔵庫の上部縦断面図、図２は本発明に係る冷蔵庫の断熱扉と内扉の開状態説明図、図３は本発明に係る内扉のロック装置の説明図、図４は断熱扉のみを開いた状態の平面矢視での説明図であり、（イ）は断熱扉が閉じた状態、（ロ）は断熱扉が３０度開いた状態、（ハ）は断熱扉が６０度開いた状態、（ニ）は断熱扉が９０度開いた状態である。
【００１４】
これらの図において、１は貯蔵庫の一つである冷蔵庫であり、前面開口の本体２内を区画して複数の貯蔵室を形成し、これら各貯蔵室の前面は扉で開閉できる構成である。この冷蔵庫において、本発明の内扉を貯蔵室の一つである冷蔵室に適用した場合を説明する。冷蔵庫本体２は、外箱（外壁板）と内箱（内壁板）との間に発泡断熱材を充填した断熱構造である。３は冷蔵庫本体２内上部に形成した冷蔵室、４はその下方に区画形成した野菜室である。
【００１５】
冷蔵室３の前面開口は、冷蔵庫本体２の一側部に上下のヒンジ装置９にて横方向に回動して開閉されるように支持された回動式の断熱扉１０にて閉塞されている。断熱扉１０は外板と内板との間に発泡断熱材を充填した断熱構造であり、取っ手５によって開閉される。１１は野菜室４の前面開口を開閉する野菜室用断熱扉である。
【００１６】
冷蔵室用断熱扉１０は、その裏側の左右両側に縦方向に延びた突壁７Ａ、７Ｂを形成し、この突壁７Ａ、７Ｂ間に複数段の物品収納棚部６Ａ、６Ｂ、６Ｃを形成している。また冷蔵室用断熱扉１０の裏側周縁部には、突壁７Ａ、７Ｂと物品収納棚部６Ａ、６Ｂ、６Ｃを取り囲んでパッキング８が取り付けられ、断熱扉１０が閉じたとき、このパッキング８が冷蔵室３の前面開口周縁で冷蔵庫本体２に密着して、断熱扉１０と冷蔵庫本体２との間の気密を保つ構成である。この気密を良好に保持するためには、パッキング８に可撓性のゴム磁石を収納し、このゴム磁石が冷蔵庫本体２に吸着する構成とする。
【００１７】
１２は断熱扉１０の裏側の配置した内扉であり、この内扉１２はその前面に小物収納棚部１３を備え、冷蔵室３前面開口を略全体的にカバーする大きさの透明な合成樹脂板で構成している。内扉１２は、ヒンジ装置９側と同じ側（図２では右側）で断熱扉１０に回動自在に支持されている。その一つの実施形態として、図示のように、ヒンジ装置９側の突壁７Ａに取り付けた上下のヒンジ装置１４にて、断熱扉１０に回動自在に支持されている。
【００１８】
断熱扉１０と内扉１２は、断熱扉１０を内扉１２が閉じた状態で単独に開閉操作できる状態と、内扉１２と一体的に開閉操作できる状態との２通りの開閉操作が可能な構成である。以下、この構成について説明する。１５は内扉１２を冷蔵室３の前面開口をカバーするロック状態とこのロックを外したロック解除状態とに切り替えるロック装置である。ロック装置１５は、取っ手５に設けたスイッチ１６のＯＮにて通電されＯＦＦにて非通電となる電磁石１７と、この電磁石１７によって内扉１２をロック状態位置とロック解除状態位置とに作動するロック部材１８を備えている。
【００１９】
ロック部材１８は、基部１９が冷蔵庫本体２に固定された板バネで構成され、内扉１２を閉じるとき、内扉１２が１２Ａの位置から１２Ｂの位置へ移動することに伴って内扉１２の下端によって押されて下方へ撓み、内扉１２が冷蔵室３の前面開口をカバーする状態に閉じたときには内扉１２の下端に係止部２０が係止するように復帰する。ロック部材１８が内扉１２の下端に係止したロック状態において、スイッチ１６のＯＮにて電磁石１７に通電すると、ロック部材１８が電磁石１７のプランジャ２１によって下方へ引っ張られて撓み、ロック部材１８による内扉１２のロック状態は解除される。このロック状態が解除されたとき、内扉１２は前方へ開くことができる。
【００２０】
冷蔵室３の冷却は、冷蔵室の背壁内に設置した冷却器２２で冷却した空気（以下、冷気という）を送風機２３によって冷蔵室３へ循環して行われる。送風機２３で送られる冷気は、冷蔵室３の背面の吹き出し口２４から噴き出す冷気と、冷蔵室３の上面に形成したダクト２５を通って冷蔵室３の前面開口上部の略全域に渡って形成した吹き出し口２６から噴き出す冷気とによって冷却される。この場合、内扉１２が閉じた状態では、吹き出し口２６から噴き出す冷気は、内扉１２の上端によって二分され、その一方の冷気は、内扉１２の裏側へ流れて主として冷蔵室３の前面開口部を冷却し、もう一方の冷気は、断熱扉１０と内扉１２との間の空間２８に流れて断熱扉１０裏側の物品収納棚部６Ａ、６Ｂ、６Ｃと内扉１２の前面の小物収納棚部１３を冷却する。
【００２１】
内扉１２の下端は冷蔵室３の底面から間隔２７を存して設けられ、その間隔２７が断熱扉１０と内扉１２との間の空間２８を流れた冷気の冷気帰還通路として作用する。冷蔵室３の冷気の流れは図１に矢印で示している。
【００２２】
内扉１２がロック解除状態では、断熱扉１０と共に前方へ開くことができるようにするために、断熱扉１０と内扉１２には永久磁石装置２８、２９を設けている。この永久磁石装置２８、２９は、両方とも吸引し合う永久磁石であってもよく、また一方が永久磁石であって他方がこの永久磁石に吸着する磁性体であってもよい。この永久磁石装置２８、２９は、内扉１２のロック解除状態では断熱扉１０を開くと内扉１２が永久磁石装置２８、２９による吸着にて断熱扉１０と同時に開かれ、内扉１２のロック状態において断熱扉１０のみを開くと、ロック装置１５が内扉１２を保持したままこの永久磁石装置２８、２９が分離するような吸着力である。
【００２３】
なお、このロック状態が解除されたとき、内扉１２が若干前方へ、例えば、１２Ｂの位置から１２Ａの位置へ自動的に開くようにヒンジ装置１４にバネを付加した構成とすることもできる。
【００２４】
内扉１２を冷蔵室３の前面開口をカバーしたロック状態のままで断熱扉１０のみを開くとき、内扉１２がそのロック状態の位置のまま動かないことが望ましいが、内扉１２が断熱扉１０にヒンジ装置１４で支持されているため、内扉１２はヒンジ装置１４側が若干前方へ移動することがある。この移動を少なくするためには、内扉１２のヒンジ装置１４は、ヒンジ装置９の軸９Ａを中心とした断熱扉１０の回動中心に近い位置に内扉１２の回動中心を設けるようにすれば改善される。内扉１２が若干前方へ移動しても、冷蔵室３の前面開口をカバーする内扉１２の役目は実質的に失われず、断熱扉１０を開いても冷蔵室３の前面開口は内扉１２で実質的にカバーされた状態であり、内扉１２による冷蔵室３の冷気漏れの抑制効果は発揮される。
【００２５】
本発明は、上記のように冷蔵室３の前面扉である断熱扉１０を単独に開閉操作できる状態と内扉１２と一体的に開閉操作できる状態との２通りの開閉操作が可能であり、そのために内扉１２の開閉を制御するロック装置１５を設け、内扉１２は閉じたロック状態では内扉１２の上端が冷気吹き出し口２６に対応して吹き出す冷気が内扉１２の前後両側に分流する位置をとり、ロック解除状態では永久磁石装置２８、２９による吸着のまま断熱扉１０の開閉と共に内扉１２が開閉され、ロック状態では永久磁石装置２８、２９による吸着に抗して内扉１２を残したまま断熱扉１０を開くことができる。
【００２６】
本発明によれば、内扉１２を開かなくても断熱扉１０を開くだけで貯蔵室３の貯蔵状態が目視可能であり、無益な冷気漏洩が抑止できる。また、内扉１２が冷気の分流機能を有するため、特別な分流装置の構成を採る必要もなくなる。そして、頻繁に使う物は断熱扉１０の裏側の物品収納棚部６Ａ〜６Ｃや内扉１２の前面側の小物収納棚部１３に収納すればよく、ここに収納されたものは、断熱扉１０と内扉１２間を流れる冷気によって冷却され、貯蔵上問題はない。このため、物品収納棚部６Ａ〜６Ｃには、卵、ペットボトルや紙パック入り飲料、ビン入り調味料等を収納し、小物収納棚部１３にはチューブや小瓶や平パックされたわさびやしょうが等の香辛料や調味料等を収納すれば、これらの収納取り出しの便利さと冷気漏れの抑制効果が得られる。
【００２７】
また、内扉１２は断熱扉１０の周縁パッキングの内側に取り付けられているため、このパッキングによるシール機能の阻害がなく、断熱扉１０による本来の断熱効果が低下せず、むしろ内扉１２によって冷蔵庫全体の断熱効果が向上する。
【００２８】
本発明は、冷蔵庫の他に冷凍庫、恒温庫等種々の貯蔵庫に適用できるものである。したがって、本発明は、本発明の技術的範囲を逸脱しない限り種々の変更が考えられ、それに係る種々の実施形態を包含するものである。
【００２９】
【発明の効果】
本発明は、内扉を開かなくても断熱扉を開くだけで貯蔵室の貯蔵状態が目視可能であり、無益な冷気漏洩が抑止できる。また、内扉が冷気の分流機能を有するため、特別な分流装置の構成を採る必要もなくなる。そして、頻繁に使う物は断熱扉の裏側の物品収納棚部や内扉の前面側の小物収納棚部に収納すればよく、ここに収納されたものは、断熱扉と内扉間を流れる冷気によって冷却され、貯蔵上問題はない。
【００３０】
また、内扉は断熱扉の周縁パッキングの内側に取り付けられているため、このパッキングによるシール機能の阻害がなく、断熱扉による本来の断熱効果が低下せず、むしろ内扉によって冷蔵庫全体の断熱効果が向上する。
【００３１】
また、内扉の上端が冷気吹き出し口に対応して吹き出す冷気が内扉の前後両側に分流する位置をとることによって、内扉が冷気の分流機能を有するため、特別な分流装置の構成を採る必要もなく、冷気配分機構が簡素化される。そして、断熱扉の裏側の物品収納棚部に収納した物品は、断熱扉と内扉間を流れる冷気によって冷却され、貯蔵上問題はない。
【図面の簡単な説明】
【図１】本発明に係る冷蔵庫の上部縦断面図である。
【図２】本発明に係る冷蔵庫の断熱扉と内扉の開状態説明図である。
【図３】本発明に係る内扉のロック装置の説明図である。
【図４】本発明に係る断熱扉のみを開いた状態の平面矢視での説明図であり、（イ）は断熱扉が閉じた状態、（ロ）は断熱扉が３０度開いた状態、（ハ）は断熱扉が６０度開いた状態、（ニ）は断熱扉が９０度開いた状態である。℃の部分の説明図である。
【符号の説明】
１・・・貯蔵庫（冷蔵庫）
２・・・貯蔵庫本体（冷蔵庫本体）
３・・・貯蔵室（冷蔵室）
５・・・取っ手
６Ａ〜６Ｃ・・・物品収納棚部
８・・・パッキング
１０・・・断熱扉
１２・・・内扉
１３・・・小物収納棚部
１８・・・ロック装置
２８、２９・・・永久磁石装置[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a storage with an inner door provided with an inner door on the back side of a heat insulating door that opens and closes a front opening of a storage room.
[0002]
[Prior art]
There is a refrigerator with an inner door provided with an inner door behind a front door that opens and closes a front opening of a storage room of the refrigerator (for example, see Patent Documents 1, 2, and 3). The thing of patent document 1 is provided with a door pocket on the back side of a front door, an inner door is composed of two right and left and has an inner pocket on the front side, and each inner door is pivotally supported so as to be rotatable in the lateral direction. ing.
[0003]
Further, in Japanese Unexamined Patent Application Publication No. 2003-168, the inner door is provided so as to fit into a concave portion on the back side of the front door, and the front door and the inner door rotate coaxially. A storage pocket is provided on at least one of the back side of the front door and the back side of the inner door. Further, the handle portion of the front door has a configuration in which two types of opening and closing operations are possible: a state in which the front door can be opened and closed independently, and a state in which the front door can be opened and closed integrally with the inner door. Furthermore, it is described that if the inner door is made of a plate-shaped transparent body, the inside of the refrigerator compartment can be visually confirmed from the outside.
[0004]
Further, in the case of Patent Document 3, an inner door is provided on the back side of the front door, a storage pocket is not formed on the back side of the front door, and storage pockets are provided only on both front and rear sides of the inner door. This is similar to that of Patent Document 2 in that no storage pocket is formed on the back side. Then, a duct is formed on the back side of the front door or inside the inner door, and cool air is circulated to storage pockets on both front and rear sides of the inner door. The front door can be opened independently of the inner door, and the inner door is divided into upper and lower parts so that a desired inner door can be opened by gripping the handle portion of the handle of the front door.
[0005]
[Patent Document 1]
JP-A-2001-280820 (pages 1-2, FIGS. 1-2)
[Patent Document 2]
JP 2001-108357 A (pages 1-3, FIGS. 1-4)
[Patent Document 3]
JP-A-2000-65459 (pages 1-2, FIGS. 1-6)
[0006]
[Problems to be solved by the invention]
The thing of patent document 1 cannot open and close simultaneously with the front door because the inner door is composed of two right and left, and when putting goods in and out of the storage room behind the inner door and checking the goods in the storage room, Two operations are required to open the front door before opening the inner door, which is inconvenient. On the other hand, in the case of Patent Literature 2, two kinds of opening and closing operations are possible: a state in which the front door can be opened and closed independently and a state in which the front door can be opened and closed integrally with the inner door. Because of the coaxial configuration, the shaft support portion of the inner door extends through a seal portion formed by a packing material attached to the back side peripheral edge of the front door, and there is a problem that the seal structure of this portion is complicated. Further, in the case of Patent Document 3, the formation of the duct on the back side of the front door has the effect of circulating cool air to the storage pockets on both the front and rear sides of the inner door, but the duct formation is required, and no storage pocket is formed on the back side of the front door. . Further, if a duct is formed in the inner door, there is a problem that the configuration of the inner door is complicated.
[0007]
In view of such a point, the present invention makes it possible to visually check the storage state of the storage room without opening the inner door, and to switch between the state where the front door can be opened and closed independently and the state where the open and close operation can be performed integrally with the inner door. Although a double door configuration of a front door and an inner door that can be selected is adopted, the front door provides a storage with an inner door that has a simple sealing configuration by packing attached to the back peripheral edge thereof.
[0008]
[Means for Solving the Problems]
A storage room with an inner door according to the present invention, wherein a storage room having a front opening is formed in the storage body, and an insulated door that opens and closes the front opening of the storage room rightward or leftward is a hinge device rotatably attached to the storage body. Is provided at the upper front portion of the storage room, a cool air outlet for blowing cool air downward is provided, and the heat insulating door includes a plurality of article storage shelves on a back surface thereof, and a back side of the heat insulating door of the storage room. Is provided with an inner door rotatably supported by the heat-insulating door on the same side as the hinge device side, and the inner door is provided with a small-item storage shelf on its front surface and covers substantially the entire front opening of the storage box. The inner door is provided with a permanent magnet device that is attracted and held to the heat-insulating door, and the storage body has an operation unit that can be operated from the front side of the heat-insulating door. Actuated by the inner door to the storage A lock device that switches between a locked state and an unlocked state that covers the front opening is provided, and in the locked state, the position where the upper end of the inner door is diverted to the front and rear sides of the inner door corresponding to the cool air outlet is provided. In the unlocked state, the inner door is opened and closed together with the opening and closing of the heat-insulating door while being held by the permanent magnet device, and in the locked state, the inner door is left while being held against the suction by the permanent magnet device. The heat-insulating door can be opened.
[0009]
With this, the front door and the inner door can be selectively opened and closed and the inner door can be opened and closed integrally. By simply opening the heat-insulating door, the storage state of the storage room can be visually checked, and useless cool air leakage can be suppressed. In addition, since the inner door has a function of dividing cold air, it is not necessary to adopt a special structure of a dividing device. Frequently used items can be stored in the article storage shelf on the back side of the heat-insulating door or in the small item storage shelf on the front side of the inner door, and the cold air flowing between the heat-insulating door and the inner door can be stored here. Cooled down, no storage problems.
[0010]
Further, the inner door is rotatably supported by the heat-insulating door on the inner side surrounded by a packing attached to the back side peripheral edge of the heat-insulating door. As a result, since the inner door is attached inside the peripheral packing of the heat insulating door, the sealing function is not hindered by this packing, and the original heat insulating effect of the heat insulating door does not decrease. The effect is improved.
[0011]
In the storage with an inner door according to the present invention, a storage room having a front opening is formed in the storage main body, and an insulated door for opening and closing the front opening of the storage is rotatably supported by the storage main body. A cool air outlet for blowing cool air downward is provided at an upper front portion, and an inner door rotatably supported is provided on the back side of the heat insulating door of the storage room, and an upper end of the inner door is a cool air outlet. In this case, the cool air to be blown out is divided into the front and rear sides of the inner door.
[0012]
Thus, since the inner door has a function of dividing the cool air, there is no need to adopt a special structure of the flow dividing device, and the cool air distribution mechanism is simplified. The articles stored in the article storage shelf on the back side of the heat-insulating door are cooled by cold air flowing between the heat-insulating door and the inner door, and there is no problem in storage.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the present invention will be described for a refrigerator which is a kind of storage. Each figure shows an embodiment of the present invention, FIG. 1 is an upper longitudinal sectional view of a refrigerator according to the present invention, FIG. 2 is an explanatory view of an open state of a heat insulating door and an inner door of the refrigerator according to the present invention, and FIG. FIG. 4 is an explanatory view of a lock device for an inner door according to the present invention, and FIG. 4 is an explanatory view in a plan arrow view when only the heat insulating door is opened. FIG. 4A shows a state where the heat insulating door is closed, and FIG. (C) is a state where the heat insulating door is opened at 60 degrees, and (D) is a state where the heat insulating door is opened at 90 degrees.
[0014]
In these figures, reference numeral 1 denotes a refrigerator, which is one of storages, which divides a main body 2 having a front opening to form a plurality of storage rooms, and the front surfaces of these storage rooms can be opened and closed by doors. In this refrigerator, a case where the inner door of the present invention is applied to a refrigerator room, which is one of storage rooms, will be described. The refrigerator main body 2 has an insulation structure in which a foam insulation material is filled between an outer box (outer wall plate) and an inner box (inner wall plate). Reference numeral 3 denotes a refrigerator room formed in the upper part of the refrigerator main body 2, and reference numeral 4 denotes a vegetable room partitioned below the refrigerator room.
[0015]
The front opening of the refrigerator compartment 3 is closed by a rotary heat-insulating door 10 that is supported on one side of the refrigerator body 2 by a vertical hinge device 9 so as to be opened and closed by being rotated in the horizontal direction. I have. The heat insulating door 10 has a heat insulating structure in which a foam heat insulating material is filled between an outer plate and an inner plate, and is opened and closed by a handle 5. Reference numeral 11 denotes a heat insulating door for the vegetable room that opens and closes the front opening of the vegetable room 4.
[0016]
The heat-insulating door 10 for the refrigerator compartment has protruding walls 7A and 7B extending in the vertical direction on both left and right sides on the back side thereof, and a plurality of article storage shelves 6A, 6B and 6C are formed between the protruding walls 7A and 7B. are doing. A packing 8 is attached to the periphery of the rear side of the heat insulating door 10 for the refrigerator compartment so as to surround the protruding walls 7A, 7B and the article storage shelves 6A, 6B, 6C, and when the heat insulating door 10 is closed, the packing 8 is attached. The refrigerator door 2 is in close contact with the refrigerator main body 2 at the periphery of the front opening of the refrigerator compartment 3 to maintain the airtightness between the heat insulating door 10 and the refrigerator main body 2. In order to maintain this airtight satisfactorily, a flexible rubber magnet is housed in the packing 8 and the rubber magnet is configured to be attracted to the refrigerator body 2.
[0017]
Reference numeral 12 denotes an inner door disposed on the back side of the heat-insulating door 10. The inner door 12 has a small article storage shelf 13 on the front surface thereof, and is a transparent synthetic resin having a size which covers the front opening of the refrigerator compartment 3 substantially entirely. It consists of a plate. The inner door 12 is rotatably supported by the heat insulating door 10 on the same side as the hinge device 9 side (the right side in FIG. 2). As one embodiment, as shown in the drawing, upper and lower hinge devices 14 attached to the projecting wall 7A on the hinge device 9 side are rotatably supported by the heat insulating door 10.
[0018]
The insulated door 10 and the inner door 12 can be opened and closed in two ways: a state in which the insulated door 10 can be opened and closed independently with the inner door 12 closed, and a state in which the insulated door 10 can be opened and closed integrally with the inner door 12. Configuration. Hereinafter, this configuration will be described. Reference numeral 15 denotes a lock device for switching the inner door 12 between a locked state covering the front opening of the refrigerator compartment 3 and an unlocked state in which the lock is released. The lock device 15 includes an electromagnet 17 that is energized when a switch 16 provided on the handle 5 is turned on and is de-energized when turned off, and a lock that operates the inner door 12 to a locked position and an unlocked position by the electromagnet 17. A member 18 is provided.
[0019]
The lock member 18 is formed of a leaf spring whose base 19 is fixed to the refrigerator body 2. When the inner door 12 is closed, the inner door 12 moves from the position 12A to the position 12B when the inner door 12 is closed. When the inner door 12 is closed so as to cover the front opening of the refrigerator compartment 3, the inner door 12 is returned to be locked by the lower end of the inner door 12 so as to be locked by the lower end. When the electromagnet 17 is energized by turning on the switch 16 in the locked state in which the lock member 18 is locked to the lower end of the inner door 12, the lock member 18 is pulled downward by the plunger 21 of the electromagnet 17 and bends. The locked state of the inner door 12 is released. When the locked state is released, the inner door 12 can be opened forward.
[0020]
Cooling of the refrigerator compartment 3 is performed by circulating air (hereinafter, referred to as cool air) cooled by a cooler 22 installed in the back wall of the refrigerator compartment to the refrigerator compartment 3 by a blower 23. The cool air blown by the blower 23 is formed over substantially the entire upper part of the front opening of the refrigerator 3 through the duct 25 formed on the upper surface of the refrigerator 3 and the cool air blown out from the outlet 24 on the back of the refrigerator 3. It is cooled by the cool air spouting from the outlet 26. In this case, when the inner door 12 is closed, the cool air spouting from the outlet 26 is divided into two by the upper end of the inner door 12, and one of the cool air flows to the back side of the inner door 12 and mainly flows into the front opening of the refrigerator compartment 3. The other cool air flows into the space 28 between the heat-insulating door 10 and the inner door 12, and the article storage shelves 6A, 6B, 6C on the back side of the heat-insulating door 10 and the small item storage on the front of the inner door 12. The shelf 13 is cooled.
[0021]
The lower end of the inner door 12 is provided with an interval 27 from the bottom surface of the refrigerator compartment 3, and the interval 27 acts as a cool air return passage for the cool air flowing through the space 28 between the heat insulating door 10 and the inner door 12. The flow of cool air in the refrigerator compartment 3 is indicated by an arrow in FIG.
[0022]
When the inner door 12 is unlocked, permanent magnet devices 28 and 29 are provided on the heat insulating door 10 and the inner door 12 so that the inner door 12 can be opened forward together with the heat insulating door 10. The permanent magnet devices 28 and 29 may be permanent magnets that attract each other, or one may be a permanent magnet and the other may be a magnetic material that is attracted to the permanent magnet. In the unlocked state of the inner door 12, when the heat-insulating door 10 is opened, the inner door 12 is opened at the same time as the heat-insulating door 10 by suction by the permanent magnet devices 28, 29, so that the inner door 12 is locked. When only the heat insulating door 10 is opened in this state, the lock device 15 has such an attractive force that the permanent magnet devices 28 and 29 are separated while the inner door 12 is held.
[0023]
When the locked state is released, a spring may be added to the hinge device 14 so that the inner door 12 is automatically opened slightly forward, for example, from the position 12B to the position 12A.
[0024]
When only the heat-insulating door 10 is opened with the inner door 12 kept in the locked state covering the front opening of the refrigerator compartment 3, it is desirable that the inner door 12 does not move in the locked state. Since the inner door 12 is supported by the hinge device 14, the hinge device 14 of the inner door 12 may move slightly forward. In order to reduce this movement, the hinge device 14 of the inner door 12 is provided such that the center of rotation of the inner door 12 is provided at a position close to the center of rotation of the heat insulating door 10 about the axis 9A of the hinge device 9. It will improve. Even if the inner door 12 moves slightly forward, the role of the inner door 12 covering the front opening of the refrigerator compartment 3 is not substantially lost. And the inner door 12 exerts the effect of suppressing the leakage of cold air from the refrigerator compartment 3.
[0025]
According to the present invention, two types of opening and closing operations are possible: a state in which the heat insulating door 10 as the front door of the refrigerator compartment 3 can be opened and closed independently, and a state in which the opening and closing operation can be performed integrally with the inner door 12 as described above. For this purpose, a lock device 15 for controlling the opening and closing of the inner door 12 is provided, and when the inner door 12 is closed and locked, the upper end of the inner door 12 bleeds out corresponding to the cool air outlet 26 to the front and rear sides of the inner door 12. In the unlocked state, the inner door 12 is opened and closed together with the opening and closing of the heat insulating door 10 while being held by the permanent magnet devices 28 and 29, and in the locked state, the inner door 12 is opposed to the suction by the permanent magnet devices 28 and 29 in the locked state. The heat insulation door 10 can be opened with the remaining.
[0026]
According to the present invention, the storage state of the storage room 3 can be visually checked only by opening the heat insulating door 10 without opening the inner door 12, and useless cool air leakage can be suppressed. In addition, since the inner door 12 has a function of dividing cold air, it is not necessary to adopt a configuration of a special dividing device. Frequently used items may be stored in the article storage shelves 6A to 6C on the back side of the heat insulating door 10 and the accessory storage shelves 13 on the front side of the inner door 12. It is cooled by the cold air flowing between the inner door 12 and there is no problem in storage. Therefore, the article storage shelves 6A to 6C store eggs, plastic bottles, beverages in paper packs, bottled seasonings, and the like, and the accessory storage shelves 13 include tubes, small bottles, and flat-packed wasabi and ginger. When spices and seasonings such as are stored, the convenience of storage and removal thereof and the effect of suppressing cold air leakage can be obtained.
[0027]
Further, since the inner door 12 is attached inside the peripheral packing of the heat insulating door 10, the sealing function is not hindered by the packing, and the original heat insulating effect of the heat insulating door 10 is not reduced. The overall heat insulating effect is improved.
[0028]
INDUSTRIAL APPLICABILITY The present invention can be applied to various storages such as a freezer and a constant temperature storage in addition to a refrigerator. Therefore, the present invention can include various modifications without departing from the technical scope of the present invention, and includes various embodiments.
[0029]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the storage state of a storage room can be visually observed only by opening an insulated door without opening an inner door, and useless cool air leakage can be suppressed. In addition, since the inner door has a function of dividing cold air, it is not necessary to adopt a special structure of a dividing device. Frequently used items can be stored in the article storage shelf on the back side of the heat-insulating door or in the small item storage shelf on the front side of the inner door, and the cold air flowing between the heat-insulating door and the inner door can be stored here. Cooled down, no storage problems.
[0030]
Also, since the inner door is attached inside the peripheral packing of the heat-insulating door, the sealing function is not hindered by this packing, and the original heat-insulating effect of the heat-insulating door does not decrease. Is improved.
[0031]
In addition, since the upper end of the inner door takes a position where the cool air blown out corresponding to the cool air outlet is diverted to both the front and rear sides of the inner door, the inner door has a function of dividing the cool air. There is no need, and the cold air distribution mechanism is simplified. The articles stored in the article storage shelf on the back side of the heat-insulating door are cooled by cold air flowing between the heat-insulating door and the inner door, and there is no problem in storage.
[Brief description of the drawings]
FIG. 1 is an upper longitudinal sectional view of a refrigerator according to the present invention.
FIG. 2 is an explanatory view showing an open state of a heat insulating door and an inner door of the refrigerator according to the present invention.
FIG. 3 is an explanatory view of an inner door locking device according to the present invention.
FIGS. 4A and 4B are explanatory views of a state in which only the heat-insulating door according to the present invention is opened, as viewed in a plan arrow direction. FIG. 4A is a state in which the heat-insulating door is closed, FIG. (C) shows a state where the heat insulating door is opened by 60 degrees, and (D) shows a state where the heat insulating door is opened by 90 degrees. It is explanatory drawing of the part of ° C.
[Explanation of symbols]
1 ... storage (refrigerator)
2 ・ ・ ・ Storage room body (refrigerator body)
3 ... storage room (refrigerated room)
5 Handles 6A to 6C Article storage shelves 8 Packing 10 Insulated doors 12 Inner doors 13 Accessory storage shelves 18 Lock devices 28, 29 ..Permanent magnet devices
