JP4156937B2

JP4156937B2 - Elevating device for shelf member

Info

Publication number: JP4156937B2
Application number: JP2003017770A
Authority: JP
Inventors: 岳博溝口; 初男山田; 高志岩本
Original assignee: Hoshizaki Electric Co Ltd
Current assignee: Hoshizaki Electric Co Ltd
Priority date: 2003-01-27
Filing date: 2003-01-27
Publication date: 2008-09-24
Anticipated expiration: 2023-01-27
Also published as: JP2004224561A

Description

【０００１】
【発明の属する技術分野】
この発明は、棚部材の昇降装置に関し、更に詳細には、食器等の物品を収納する食器消毒保管庫や冷温蔵庫等において使用される上下移動可能な棚部材の昇降装置に関するものである。
【０００２】
【従来の技術】
例えば食器消毒保管庫では、箱体内に多段的に固定配置した各棚部材に対して食器等を出し入れする際に、高い位置の棚部材あるいは低い位置の棚部材に対する食器等の出し入れ作業は、踏み台を用いたり、あるいは腰を曲げたままの作業となり、煩雑で煩わしい作業となっていた。そこで、上下に移動可能に構成した各棚部材を可撓性のワイヤで相互に連結し、最上位の棚部材に連結したワイヤを昇降機構により巻上げたり繰出すことで、棚部材を食器等を出し入れし易い高さ位置まで移動させるものが提案されている。しかし、全ての棚部材をワイヤで相互に連結する構成では、最上位の棚部材を最上部まで吊り上げた状態において、中段より下位に位置する棚部材に関しては、これを作業性が良好となる位置まで上昇させることはできず、依然として下位に位置する棚部材に対する食器等の出し入れ作業に際して、作業者は腰を曲げる等の悪い作業姿勢を強いられていた。
【０００３】
前述した問題に対処するものとして、棚枠の内部において上下移動可能に配設した複数の棚部材を、上部棚群と下部棚群とに分け、上下の棚群を別々に上下移動させるものがある(例えば、特許文献１)。この特許文献１に開示の昇降装置では、上部棚群に関しては夫々を専用の棚ワイヤロープで相互に連結すると共に、上部棚群における最上位の棚部材に連結した上段棚用ワイヤを、箱体上部に配設した無端チェンの所定位置に連結し、該無端チェンの正逆回転により上部棚群を上下移動させる。これに対し、下部棚群に関しては夫々を棚柱により相互に連結すると共に、下部棚群における最上位の棚部材に連結した下段棚用ワイヤを、前記無端チェンに配設されたフックに係脱可能なワイヤリング軸に連結する。そして、無端チェンと一体的に移動するフックをワイヤリング軸に係合させることで、積重なっている上部棚群を載置した状態で、下部棚群を作業性の良い高さ位置まで上昇させ得るよう構成されている。
【０００４】
また、全ての棚部材に連結した吊り具を、棚枠上部に配設された対応する巻上げ装置に接続すると共に、中段位置の棚部材に連結した補助吊り具を補助巻上げ装置に接続し、モータに配設された電磁クラッチにより、巻上げ装置を回転する状態と補助巻上げ装置を回転する状態とに切り替えることで、中段より下位の棚部材を作業性の良い高さ位置まで上昇させ得るようにしたものもある(例えば、特許文献２)。
【０００５】
【特許文献１】
特公平７−８４２４２号公報
【特許文献２】
特許２６６２８３７号公報
【０００６】
【発明が解決しようとする課題】
しかし、特許文献１に開示の昇降装置では、特殊な部品が必要になると共に部品点数が増え、構造が複雑になって組立てやメンテナンスが煩雑になると共に、製造コストが嵩む問題がある。また特許文献２に開示の昇降装置においても、モータからの動力伝達を切り替えるための電磁クラッチや、全ての棚部材を上下移動させる巻上げ装置と、下段側の棚部材を上下移動させる補助巻上げ装置とが別々に必要となり、部品点数が増加して製造コストが嵩む欠点が指摘される。更に、特許文献１に開示の昇降装置と同様に、構造が複雑になって組立てやメンテナンスが煩雑になる問題もある。
【０００７】
【発明の目的】
本発明は、前述した従来の技術に内在している前記課題に鑑み、これを好適に解決するべく提案されたものであって、簡単な構成で棚部材を作業性の良い高さ位置に移動可能な棚部材の昇降装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
前記課題を克服し、所期の目的を好適に達成するため、本発明に係る棚部材の昇降装置は、
棚枠の内部に配設されて上下に移動可能な上棚部材および下棚部材と、
前記棚枠に配設されて上下方向に循環走行する複数の無端索体と、
前記上棚部材に設けられた上係合部に開設されて、前記各無端索体における上下方向に走行する一方の直線走行部が通過する上透孔と、
前記下棚部材に設けられた下係合部に開設されて、前記各無端索体における上下方向に走行する他方の直線走行部が通過する下透孔と、
前記各無端索体に配設され、該無端索体を一方の直線走行部が上方に移動するよう走行させた際に前記上棚部材の上係合部に下方から係合して、この係合状態で該無端索体の正逆方向の走行により上棚部材を上下移動させる上吊り具と、
前記各無端索体に配設され、該無端索体を他方の直線走行部が上方に移動するよう走行させた際に前記下棚部材の下係合部に下方から係合して、この係合状態で該無端索体の正逆方向の走行により下棚部材を上下移動させる下吊り具とを備え、
前記上吊り具および下吊り具は、該上吊り具および下吊り具が夫々上係合部および下係合部に係合していない状態において、該上吊り具および下吊り具が対応する上係合部および下係合部の下方に位置するように前記無端索体に配設されていることを特徴とする。
【０００９】
【発明の実施の形態】
次に、本発明に係る棚部材の昇降装置につき、好適な実施例を挙げて、添付図面を参照しながら以下説明する。
【００１０】
図１に示す如く、実施例に係る棚部材の昇降装置が採用される食器消毒保管庫(保管庫)１０は、棚枠をなす断熱構造の断熱箱体１１の内部に、複数の上棚部材１２および複数の下棚部材１３が、上下の関係で上下に移動可能に配設され、これら各棚部材１２,１３が、後述する昇降装置１４により上下移動されるよう構成される。なお、断熱箱体１１の前面には、当該断熱箱体１１に開設した開口部を開閉可能に閉成する断熱扉(図示せず)が配設され、該開口部を介して前記各棚部材１２,１３に対する食器や該食器が収容されたラック等の物品Ｍの出し入れが行なわれる。また断熱箱体１１の内部には、図示しない加熱装置により熱風が循環供給され、各棚部材１２,１３に載置された食器等が加熱されて消毒・乾燥されるようになっている。
【００１１】
前記断熱箱体１１の上部に機械室１５が画成され、該機械室１５に昇降装置１４の主要部が配設されている。すなわち、機械室１５の前後に離間する位置には、図２に示す如く、左右方向(幅方向)に延在する一対の駆動軸１６,１７が平行状態で回転可能に配設されている。前側に位置する前駆動軸１６の左右両軸端部に前駆動スプロケット１８,１８が一体的に回転するよう配設されると共に、後側に位置する後駆動軸１７の左右両軸端部に後駆動スプロケット１９,１９が一体的に回転するよう配設される。また、前後の各駆動スプロケット１８,１８,１９,１９に対応する断熱箱体１１の内部における下方位置に、前後の従動スプロケット２０,２０,２１,２１が夫々回転可能に配設される。そして、前側において上下に対応する各前駆動スプロケット１８と前従動スプロケット２０とに昇降用の前無端チェン(無端索体)２２が夫々巻掛けられると共に、後側において上下に対応する各後駆動スプロケット１９と後従動スプロケット２１とに昇降用の後無端チェン(無端索体)２３が夫々巻掛けられている。
【００１２】
前記機械室１５には、前後の駆動軸１６,１７の間に正逆回転可能な駆動モータとしてのギヤモータ２４が配設され、該モータ２４の出力軸２４ａに一体的に回転するよう配設された第１スプロケット２５と、前駆動軸１６に一体的に回転するよう配設された第２スプロケット２６との間に、第１駆動チェン２７が巻掛けられている。また、前駆動軸１６には第３スプロケット２８が一体的に回転するよう配設され、該第３スプロケット２８と、後駆動軸１７に一体的に回転するよう配設された第４スプロケット２９との間に、第２駆動チェン３０が巻掛けられている。すなわち、前記ギヤモータ２４を正逆回転することで、前後の駆動軸１６,１７は同一向きに正転および逆転し、これによって断熱箱体１１の内部４隅部において上下方向に延在する４つの昇降用の無端チェン２２,２２,２３,２３が同一向きに循環走行するよう構成される。実施例では、各無端チェン２２,２３における前側に位置して上下方向に走行する第１直線走行部(一方の直線走行部)が上方へ移動する場合を正転とし、後側に位置して上下方向に走行する第２直線走行部(他方の直線走行部)が上方へ移動する場合を逆転と指称する。
【００１３】
前記各昇降用の無端チェン２２,２３には、その走行方向に所定間隔離間して、前記上棚部材１２の配設数に対応する数(実施例では４個)の上吊り具３１が配設されて一体的に移動するよう構成されている。なお実施例では、上吊り具３１に関し、図１において上位側から順に、第１上吊り具３１Ａ、第２上吊り具３１Ｂ、第３上吊り具３１Ｃ、第４上吊り具３１Ｄと区別して指称する。そして、これら４個の吊り具３１Ａ,３１Ｂ,３１Ｃ,３１Ｄは、夫々が形状あるいは寸法が異なるよう設定されている。例えば、図１において最上位に位置する第１上吊り具３１Ａは、図３に示す如く、幅方向に離間する一対の直線状の板材の前後寸法が短かいのに対し、その下位に位置する第２上吊り具３１Ｂは、図４に示す如く、幅方向に離間する一対の直線状の板材の前後寸法が長く設定される。また、更にその下位に位置する第３上吊り具３１Ｃは、図５に示す如く、幅方向に離間する一対のコ字状に形成された板材の前後寸法が短かいのに対し、その下位に位置する第４上吊り具３１Ｄは、図６に示す如く、幅方向に離間する一対のコ字状に形成された板材の前後寸法が長く設定されている。前記４本の無端チェン２２,２２,２３,２３に配設される夫々の第１上吊り具３１Ａ、第２上吊り具３１Ｂ、第３上吊り具３１Ｃ、第４上吊り具３１Ｄは、対応する(同種の)４つの上吊り具３１が同一水平レベルに臨むよう設定され、後述するように４つの上吊り具３１によって各対応の上棚部材１２の４隅部を支持して上下移動させるよう構成される。
【００１４】
なお、前記ギヤモータ２４は、上下の各棚部材１２,１３の位置を検知するセンサやモータ２４の回転数を検知する回転検出器等からの信号等に基づいて、図示しない制御手段により運転制御され、物品Ｍの出し入れ作業に際しては、断熱箱体１１内に配設されている上下の各棚部材１２,１３を、予め設定された出し入れ作業が楽に行ない得る出し入れ位置に停止するよう設定されている。
【００１５】
前記断熱箱体１１の内部に配設される前記上棚部材１２は、実施例では、上下４段設けられ、上位側から順に、第１上棚部材１２Ａ、第２上棚部材１２Ｂ、第３上棚部材１２Ｃ、第４上棚部材１２Ｄと区別して指称し、また前記下棚部材１３は、上下３段設けられ、上位側から順に、第１下棚部材１３Ａ、第２下棚部材１３Ｂ、第３下棚部材１３Ｃと区別して指称する。各上棚部材１２の形状は同一であって、例えば第１上棚部材１２Ａを例に挙げれば、図７に示す如く、複数の縦材と横材とを組合わせて平面略矩形状に形成される。この第１上棚部材１２Ａにおける幅方向の両端縁には、該第１上棚部材１２Ａの各側方において前記前後に並列の関係で配設される前後の無端チェン２２,２３における両第１直線走行部の離間寸法だけ前後に離間して、外側方に延出する上係合部３２,３２が夫々突設されている。そして、各上係合部３２には、前後の無端チェン２２,２３における第１直線走行部が通過する上透孔３３が開設されて、該無端チェン２２,２３の循環走行時には第１直線走行部が該上透孔３３を上下に通過するよう構成してある。なお、この上透孔３３に関しても、各段の上棚部材１２Ａ,１２Ｂ,１２Ｃ,１２Ｄに対応して、上位側から順に、第１上透孔３３Ａ、第２上透孔３３Ｂ、第３上透孔３３Ｃ、第４上透孔３３Ｄと区別して指称する。
【００１６】
前記上透孔３３は、各段の上棚部材１２Ａ,１２Ｂ,１２Ｃ,１２Ｄ毎に異なる形状あるいは寸法に設定されている。すなわち、最上位に位置する第１上棚部材１２Ａにおける第１上透孔３３Ａは、図３に示す如く、前記昇降用の無端チェン２２,２３に配設された第１上吊り具３１Ａの通過を許容しない形状あるいは寸法に設定され、第１上吊り具３１Ａが上係合部３２に対して下方から係合した状態で、該無端チェン２２,２３における第１直線走行部を第１上吊り具３１Ａが上下方向に移動することにより、第１上棚部材１２Ａが上下移動される。また、第１上棚部材１２Ａの下位に位置する第２上棚部材１２Ｂにおける第２上透孔３３Ｂは、図４に示す如く、前記昇降用の無端チェン２２,２３に配設された第２上吊り具３１Ｂの通過を許容しない形状あるいは寸法に設定され、第２上吊り具３１Ｂが上係合部３２に対して下方から係合した状態で、該無端チェン２２,２３における第１直線走行部を第２上吊り具３１Ｂが上下方向に移動することにより、第２上棚部材１２Ｂが上下移動される。但し、第２上透孔３３Ｂは、前記第１上吊り具３１Ａの通過を許容するよう設定され、第１上吊り具３１Ａが第１上棚部材１２Ａの上係合部３２から離間して無端チェン２２,２３における第１直線走行部を下方に移動する際には、該第１上吊り具３１Ａが第２上棚部材１２Ｂの上係合部３２に係合することなく第２上透孔３３Ｂを通過し得るようになっている。
【００１７】
前記第２上棚部材１２Ｂの下位に位置する第３上棚部材１２Ｃにおける第３上透孔３３Ｃは、図５に示す如く、前記昇降用の無端チェン２２,２３に配設された第３上吊り具３１Ｃの通過を許容しない形状あるいは寸法に設定され、第３上吊り具３１Ｃが上係合部３２に対して下方から係合した状態で、該無端チェン２２,２３における第１直線走行部を第３上吊り具３１Ｃが上下方向に移動することにより、第３上棚部材１２Ｃが上下移動される。但し、第３上透孔３３Ｃは、前記第１上吊り具３１Ａおよび第２上吊り具３１Ｂの通過を許容するよう設定され、第１上吊り具３１Ａおよび第２上吊り具３１Ｂが対応する第１上棚部材１２Ａおよび第２上棚部材１２Ｂの上係合部３２から離間して無端チェン２２,２３における第１直線走行部を下方に移動する際には、該第１上吊り具３１Ａおよび第２上吊り具３１Ｂが第３上棚部材１２Ｃの上係合部３２に係合することなく第３上透孔３３Ｃを通過し得るようになっている。
【００１８】
また、第３上棚部材１２Ｃの下位に位置する最下位の第４上棚部材１２Ｄにおける第４上透孔３３Ｄは、図６に示す如く、前記昇降用の無端チェン２２,２３に配設された第４上吊り具３１Ｄの通過を許容しない形状あるいは寸法に設定され、該無端チェン２２,２３における第１直線走行部を第４上吊り具３１Ｄが上下方向に移動することにより、第４上棚部材１２Ｄが上下移動される。但し、第４上透孔３３Ｄは、前記第１上吊り具３１Ａ、第２上吊り具３１Ｂおよび第３上吊り具３１Ｃの通過を許容するよう設定され、第１上吊り具３１Ａ、第２上吊り具３１Ｂおよび第３上吊り具３１Ｃが対応する第１上棚部材１２Ａ、第２上棚部材１２Ｂおよび第３上棚部材１２Ｃの上係合部３２から離間して無端チェン２２,２３における第１直線走行部を下方に移動する際には、該第１上吊り具３１Ａ、第２上吊り具３１Ｂおよび第３上吊り具３１Ｃが第４上棚部材１２Ｄの上係合部３２に係合することなく第４上透孔３３Ｄを通過し得るようになっている。
【００１９】
すなわち、各上棚部材１２Ａ,１２Ｂ,１２Ｃ,１２Ｄに開設された対応する上透孔３３Ａ,３３Ｂ,３３Ｃ,３３Ｄは、上位に位置する上透孔３３と、その下位に位置する上透孔３３とで異なる形状または寸法に設定される。また、各上棚部材１２Ａ,１２Ｂ,１２Ｃ,１２Ｄに対応する上吊り具３１Ａ,３１Ｂ,３１Ｃ,３１Ｄは、対応する上棚部材１２の上係合部３２には係合し、かつその下位に位置する上棚部材１２の上透孔３３は通過可能に設定されて、４枚の上棚部材１２Ａ,１２Ｂ,１２Ｃ,１２Ｄが相互に積重なった状態から(図１１参照)、上下の上吊り具３３,３３の離間長さだけ相互に離間して、各段の上棚部材１２Ａ,１２Ｂ,１２Ｃ,１２Ｄに物品Ｍを出し入れ可能な状態とし得るよう構成される(図１４,図１５参照)。
【００２０】
前記３枚の下棚部材１３は、その基本形状は同一であって、図８および図９に示す如く、複数の縦材と横材とを組合わせて平面略矩形状に形成されると共に、上下に対向する下棚部材１３,１３同士は、その各４隅部において連結部材としての棚柱３４により夫々連結されている。すなわち、３枚の下棚部材１３は、棚柱３４の高さだけ離間した状態で相互に平行に臨む状態を維持して上下移動するよう構成される。この下部棚群における最上位に位置する第１下棚部材１３Ａの幅方向の両端縁には、前後に並列の関係で配設される前後の無端チェン２２,２３における両第２直線走行部の離間寸法だけ前後に離間して、外側方に延出する下係合部３５,３５が夫々突設されている。そして、各下係合部３５には、前後の無端チェン２２,２３における第２直線走行部が通過する下透孔３６が開設されて、該無端チェン２２,２３の循環走行時には第２直線走行部が該下透孔３６を上下に通過するよう構成される。実施例においては、第１下棚部材１３Ａの下位に棚柱３４を介して連結される２枚の下棚部材１３Ｂ,１３Ｃが、下係合部を備えていない別種の別下棚部材となっている。
【００２１】
前記第１下棚部材１３Ａにおける下透孔３６は、図１０に示す如く、前記昇降用の無端チェン２２,２３に配設された第４上吊り具３１Ｄの通過を許容しない形状あるいは寸法に設定される。また前記下部棚群は、図１に示す如く、前記断熱箱体１１の内部適宜位置に配設されたストッパ３７によって、最下部位置が規制され、このときの第１下棚部材１３Ａにおける下係合部３５の高さ位置が、前記無端チェン２２,２３における下側の曲線走行部より上方に位置するよう設定される。すなわち、無端チェン２２,２３の第１直線走行部を下方に移動した後に曲線走行部を経て第２直線走行部を上方に移動する第４上吊り具３１Ｄが、前記下係合部３５に対して下方から係合して第１下棚部材１３Ａ、すなわち下部棚群を上方に移動させ得るよう構成してある。このように実施例では、第４上棚部材１２Ｄを上下移動させる第４上吊り具３１Ｄが、第１下棚部材１３Ａ(上部棚郡)を上下移動させる下吊り具を兼用している。
【００２２】
なお、第１下棚部材１３Ａに設けられる各下係合部３５は、前記無端チェン２２,２３の第１直線走行部を下方に移動する各上吊り具３１が干渉しない位置に設けられている。また、図１１に示す如く、前記ストッパ３７で規制されて最下部に位置する下部棚群における第１下棚部材１３Ａの上に４枚の上棚部材１２が積重なっている状態で、第１上吊り具３１Ａが第４上棚部材１２Ｄの下方に位置すると共に、第４上吊り具３１Ｄが第１下棚部材１３Ａの下方に臨むよう設定され、この状態から前記無端チェン２２,２３を正転または逆転することで、上部棚群または下部棚群の何れかの上下移動が行なわれるようになっている。すなわち、前記各上吊り具３１Ａ〜３１Ｄが対応する各上棚部材１２Ａ〜１２Ｄの上係合部３２に係合して該上棚部材１２Ａ〜１２Ｄを上下移動する際には、前記下吊り具として機能する第４上吊り具３１Ｄは第１下棚部材１３Ａの下係合部３５とは係合せず、かつ第４上吊り具３１Ｄが第１下棚部材１３Ａの下係合部３５に係合して該第１下棚部材１３Ａを上下移動する際には、各上吊り具３１Ａ〜３１Ｄと対応する各上棚部材１２Ａ〜１２Ｄの上係合部３２とは係合しない関係で、前記各上吊り具３１Ａ〜３１Ｄが各無端チェン２２,２３に配設されている。
【００２３】
【実施例の作用】
次に、実施例に係る棚部材の昇降装置の作用につき、以下に説明する。なお、全ての棚部材１２,１３に食器等の物品Ｍが載置されておらず、図１１に示す如く、下部棚群が前記ストッパ３７で規制された最下部に位置すると共に、第１下棚部材１３Ａの上に４枚の上棚部材１２が積重なっているものとする。また、前記断熱箱体１１に対する物品Ｍの出し入れを良好に行ない得る棚部材の位置は、ストッパ３７で規制されて最下部に位置している下部棚群における第１下棚部材１３Ａの位置(出し入れ位置)に設定されているものとする。
【００２４】
前述した状態で、前記ギヤモータ２４を逆転方向に回転することで、前記４本の昇降用の無端チェン２２,２３に配設されている各第４上吊り具３１Ｄが、第２直線走行部を上方に移動する。これにより、下部棚群における最上位の第１下棚部材１３Ａの各下係合部３５に対して第４上吊り具３１Ｄが夫々下方から係合し、該第１下棚部材１３Ａ、すなわち下部棚群が上方に移動し、図１２に示す如く、前記第２下棚部材１３Ｂが出し入れ位置に到来したときに、前記ギヤモータ２４が停止する。これにより作業者は、第２下棚部材１３Ｂに対して物品Ｍを、腰を曲げることなく楽な姿勢で容易に載置する(収容する)ことができる。
【００２５】
前記ギヤモータ２４を更に逆転方向に回転し、前記第４上吊り具３１Ｄを第２直線移動部において上方に移動すると、下部棚群も上方に移動し、図１３に示す如く、前記第３下棚部材１３Ｃが出し入れ位置に到来し、このときに前記ギヤモータ２４が停止する。従って、第３下棚部材１３Ｃに対して物品Ｍを、作業者は楽な姿勢で容易に載置することができる。
【００２６】
次に、前記ギヤモータ２４を正転方向に回転することで、前記４本の昇降用の無端チェン２２,２３の各第４上吊り具３１Ｄは、前記第１下棚部材１３Ａの下係合部３５に係合した状態で第２直線走行部を下方に移動し、これに伴い下部棚群も下方に移動する。そして、下部棚群が前記ストッパ３７により下方への移動が規制された最下部に到来した以後は、前記第４上吊り具３１Ｄが第１下棚部材１３Ａの下係合部３５から下方に離間し、下部棚群の上下移動はなされなくなる。
【００２７】
前記第４上吊り具３１Ｄが第１下棚部材１３Ａの下係合部３５から下方に離間したときにギヤモータ２４が停止し、上下の棚群は図１１に示す初期位置に戻る。このとき、第１下棚部材１３Ａの上に積重なっている上部棚群における第１上棚部材１２Ａは、前記の出し入れ位置に臨んでいるから、該第１上棚部材１２Ａに対して物品Ｍを楽な姿勢で載置し得る。
【００２８】
前述したギヤモータ２４の正転方向への回転により、前記４本の昇降用の無端チェン２２,２３の各第１上吊り具３１Ａは、第１直線走行部を上方に移動する。すなわち、前記第１下棚部材１３Ａの上に積重なっている上部棚群の下方に臨んでいた前記第１上吊り具３１Ａが、第４〜２の上棚部材１２Ｄ,１２Ｃ,１２Ｂの各上透孔３３Ｄ,３３Ｃ,３３Ｂを下方から通過した後、第１上棚部材１２Ａの上係合部３２に対して下方から係合し、該第１上棚部材１２Ａが上方に移動される。これにより、第１上棚部材１２Ａは、図１４に示す如く、下位の第２上棚部材１２Ｂから上方に離間し、両上棚部材１２Ａ,１２Ｂの間には、第１上吊り具３１Ａと第２上吊り具３１Ｂとの離間距離に相当する空間が画成される。この状態で、第２上棚部材１２Ｂは出し入れ位置に臨んでいるから、該第２上棚部材１２Ｂに対して物品Ｍを楽な姿勢で載置することができる。
【００２９】
以後は、第２上吊り具３１Ｂおよび第３上吊り具３１Ｃにより対応する第２上棚部材１２Ｂおよび第３上棚部材１２Ｃを順次上方に移動し、ギヤモータ２４が停止して、その下位に位置する第３上棚部材１２Ｃおよび第４上棚部材１２Ｄが出し入れ位置に臨む毎に、対応する上棚部材１２Ｃ,１２Ｄに対して物品Ｍを載置する。この場合も、前述したと同様に、各上棚部材１２Ｃ,１２Ｄに対する物品Ｍの載置作業は、腰を曲げることなく楽な姿勢で行なうことができる。そして、前記第１上棚部材１２Ａが最上部に到来してギヤモータ２４が停止することで、図１５に示す如く、前記第４上吊り具３１Ｄにより対応する第４上棚部材１２Ｄが第１下棚部材１３Ａから上方に離間する位置に支持され、これにより出し入れ位置に臨む該第１下棚部材１２Ａに対して楽な姿勢で物品Ｍを載置し得る。
【００３０】
なお、前記各棚部材１２,１３から物品Ｍを取出す場合は、前述とは逆に、全ての棚部材１２,１３を順次出し入れ位置に停止保持する各工程を行なうことで、各棚部材１２,１３からの物品Ｍの取出し作業を楽な姿勢で行なうことができる。
【００３１】
すなわち、実施例の昇降装置１４では、４本の無端チェン２２,２３を正逆方向に走行するだけで、上部棚群と下部棚群とを別々に上下移動させて、全ての棚部材１２,１３を、作業者による食器等の物品Ｍの出し入れ作業を良好に行ない得る高さ位置まで移動させることができる。しかも、上部棚群と下部棚群との上下移動の切り替えは、無端チェン２２,２３を逆転させるだけでよいから、昇降装置１４の構成を簡略化して、製造コストを低廉に抑えると共に、組立てやメンテナンス等も簡単となる。
【００３２】
【別実施例】
図１６〜図２２は、別実施例に係る昇降装置を示すものであって、その基本的な構成は前述した実施例と同一であるので、異なる部分についてのみ説明し、同一部材については同じ符号を付して示す。すなわち、図１６および図１７に示す第１別実施例に係る昇降装置３８は、前記ギヤモータ２４に対して第１スプロケット２５、第１駆動チェン２７および第２スプロケット２６を介して回転駆動される前駆動軸１６には、駆動ギヤ３９が一体的に回転するよう配設される。また、駆動ギヤ３９に噛合する従動ギヤ４０が配設される回転軸４１に第５スプロケット４２が一体的に回転するよう配設され、該第５スプロケット４２と、前記後駆動軸１７に一体的に回転するよう配設された第６スプロケット４３との間に第３駆動チェン４４が巻掛けられている。従って、ギヤモータ２４を回転することで、前後の駆動軸１６,１７は逆方向に回転し、前側の駆動軸１６で回転される前無端チェン２２,２２と、後側の駆動軸１７で回転される後無端チェン２３,２３とが逆向きに循環走行するよう構成される。そして、この第１別実施例においては、前無端チェン２２では、前述した実施例と同様に前側に位置して上下方向に走行する直線走行部が第１直線走行部(一方の直線走行部)となり、後側に位置して上下方向に走行する直線走行部が第２直線走行部(他方の直線走行部)となるのに対し、後無端チェン２３では、前側に位置して上下方向に走行する直線走行部が第２直線走行部(他方の直線走行部)となり、後側に位置して上下方向に走行する直線走行部が第１直線走行部(一方の直線走行部)となる。
【００３３】
前記前後の無端チェン２２,２３には、前述したと同様の第１〜第４の上吊り具３１Ａ〜３１Ｄが走行方向に所定間隔離間して夫々配設され、図１６に示す如く、各上吊り具３１Ａ〜３１Ｄは、前後の無端チェン２２,２３の第１直線走行部または第２直線走行部において、同種のものが同一水平レベルを維持した状態で上下移動するよう設定される。また、前記上棚部材１２に設けられる各上係合部３２は、前後の無端チェン２２,２３における外側に位置する第１直線走行部に対応するよう位置し、該第１直線走行部を上下移動する各上吊り具３１Ａ〜３１Ｄにより対応する各上棚部材１２Ａ〜１２Ｄが上下移動されるよう構成される。
【００３４】
これに対し、前記第１下棚部材１３Ａに設けられる各下係合部３５は、前後の無端チェン２２,２３における内側に位置する第２直線走行部に対応するよう位置し、該第２直線走行部を上下移動する各第４上吊り具３１Ｄにより該第１下棚部材１３Ａが上下移動されるよう構成される。
【００３５】
すなわち、第１別実施例においても、前述した実施例と同様に、４本の無端チェン２２,２３を正逆方向に走行するだけで、上部棚群と下部棚群とを別々に上下移動させて、全ての棚部材１２,１３を、作業者による食器等の物品Ｍの出し入れ作業を良好に行ない得る高さ位置まで移動させることができる。しかも、上部棚群と下部棚群との上下移動の切り替えは、無端チェン２２,２３を逆転させるだけでよいから、昇降装置３８の構成を簡略化して、製造コストを低廉に抑えると共に、組立てやメンテナンス等も簡単となる。更に第１別実施例では、前後に位置する無端チェン２２,２３の外側に位置する第１直線走行部を上下移動する第１〜第４の上吊り具３１Ａ〜３１Ｄで上棚部材１２Ａ〜１２Ｄを上下移動させ、内側に位置する第２直線走行部を上下移動する第４上吊り具３１Ｄで第１下棚部材１３Ａ(下部棚群)を上下移動させるよう構成したから、各上吊り具３１Ａ〜３１Ｄの移動位置は、断熱箱体１１の中央に対して前後で対称となる。これにより、上下の棚部材１２,１３の形状を、前後(前後の無端チェン２２,２３の離間方向)で対称とすることができ、各棚部材１２,１３を安定的に上下移動させることが可能となる。
【００３６】
図１８に示す第２別実施例の昇降装置４９では、前記前後の駆動軸１６,１７と直交する前後方向に延在して回転可能に配設される作動軸５０に第７スプロケット５１が一体回転可能に配設され、該第７スプロケット５１と前記ギヤモータ２４の第１スプロケット２５との間に第４駆動チェン５２が巻掛けられている。また作動軸５０の両軸端には、対応する前後の駆動軸１６,１７に一体的に配設された前後の従動ベベルギヤ５３,５４に噛合する前後の駆動ベベルギヤ５５,５６が一体的に回転するよう配設されており、該作動軸５０の正逆回転により前後の駆動軸１６,１７が同一向きに正転および逆転するよう構成されている。なお、前記機械室１５には、昇降装置４９における駆動部と干渉しない位置に、ファンモータ５７や電装箱５８および排気ダクト５９が配置されている。
【００３７】
図１９に示す第３別実施例の昇降装置６０は、前記第２別実施例に対して、前記ギヤモータ２４から作動軸５０への動力伝達手段のみが異なっている。すなわち、両軸端に前述した前後の駆動ベベルギヤ５５,５６が配設された作動軸５０にウォームホイール６１が一体的に回転するよう配設され、該ウォームホイール６１に、前記ギヤモータ２４の出力軸２４ａに配設されたウォーム６２が噛合するよう構成されている。従って、ギヤモータ２４を正逆回転することで、ウォーム６２とウォームホイール６１との噛合作用下に、前後の駆動軸１６,１７が同一向きに正転および逆転する。
【００３８】
図２０に示す第４別実施例の昇降装置６３は、前記第２および第３別実施例とは異なり、前記ギヤモータ２４により前駆動軸１６を直接回転駆動するよう構成したものである。すなわち、前駆動軸１６にウォームホイール６４が一体的に回転するよう配設され、該ウォームホイール６４に、前記ギヤモータ２４の出力軸２４ａに配設されたウォーム６５が噛合するよう構成される。従って、ギヤモータ２４を正逆回転することで、ウォーム６５とウォームホイール６４との噛合作用下に、前駆動軸１６が正逆回転される。なお、前後の駆動軸１６,１７は、前述した実施例と同様に、第３スプロケット２８、第４スプロケット２９および第２駆動チェン３０により連結され、両駆動軸１６,１７は同一向きに回転するようになっている。
【００３９】
前述した第２〜第４の別実施例においても、前述した実施例と同様の作用効果を奏する。また第３および第４の別施例においては、ギヤモータ２４からの動力伝達手段として、セルフロック性を有するウォーム６２,６５とウォームホイール６１,６４を用いることで、前記の無端チェン２２,２３が切れたり、ギヤモータ２４のブレーキが故障した場合においても、上下の棚部材１２,１３の落下を抑制することが可能となり、安全性が向上する。すなわち、別途安全装置を設ける必要はなく、部品点数を低減することができる。更に、昇降装置６０,６３における駆動部の小型化を図り得るから、小さな機械装置に採用することが可能となる。なお、第４別実施例のように前駆動軸１６にギヤモータ２４を直結する構成では、動力伝達部品を削減してコストを低廉に抑えることができると共に、メンテナンス性も良好となる。
【００４０】
図２１は、昇降装置における上下の棚部材に案内構造を追加した第５別実施例を示すものであって、前記各上棚部材１２の各上係合部３２に、上下に貫通する通孔４５を穿設し、上下方向に整列する４つの通孔４５に、断熱箱体１１に配設されて上下方向に延在するガイドロッド４６が挿通されている。すなわち、各上棚部材１２は、その４隅部において４本のガイドロッド４６により支持された状態で上下移動するよう構成される。なお、下棚部材１３に関しては、図示しないが、第１下棚部材１３Ａの下係合部３５に通孔を設けると共に、第２および第３下棚部材１３Ｂ,１３Ｃの第４上吊り具３１Ｄと干渉しない位置に延出部を設け、該延出部に穿設した通孔および下係合部３５に設けた通孔に共通的にガイドロッドを挿通するよう構成する。
【００４１】
そして、このように構成することで、上下の棚部材１２,１３を安定して上下移動し、各棚部材１２,１３が揺れて断熱箱体１１の内部を傷付けたりするのを防止することができる。また各棚部材１２,１３の揺れを防止することで、該棚部材１２,１３の外形寸法を大きくすることが可能となり、物品Ｍの載置量を稼ぐことができる。更に、各棚部材１２,１３の４隅部をガイドロッド４６で支持する構成によれば、前述したセルフロック性を有する動力伝達手段を用いない各実施例の構成においても、無端チェン２２,２３が切れたり、ギヤモータ２４のブレーキが故障した場合であっても、通孔４５とガイドロッド４６との摺接により上下の棚部材１２,１３の落下を抑制することが可能となり、安全性が向上する。
【００４２】
なお、上下の棚部材１２,１３を案内する構造は、図２１に示す構成に限定されるものでなく、例えば図２２に示す第６別実施例の如く、上下の各係合部３２,３５の側端部にＣチャンネル状の案内部材４７を設け、該案内部材４７が案内されるＴ字状に形成されたガイド部材４８を断熱箱体１１に配設するようにしてもよい。
【００４３】
【変更例】
本願は前述した実施例の構成に限定されるものでなく、その他の構成を適宜に採用することができる。
１．実施例では各棚部材を４本の無端チェンにより上下移動する場合で説明したが、各棚部材をガイド部材等により安定して上下移動可能に支持したもとで、幅方向に対向して配設された一対の無端チェンによって上下移動させる構成を採用し得る。
２．棚部材を上下移動する無端索体としては、無端チェンに限らず無端状に形成したワイヤやベルト等であってもよい。
３．上部棚群および下部棚群の数は、実施例に示すものに限定されず、少なくとも各１つずつあればよく、上棚部材の数と、無端チェンに配設される上吊り具との数が一致していればよい。
４．下棚部材を上下移動するための下吊り具に関しては、実施例では上部棚群における最下位の上棚部材を上下移動するための上吊り具を用いたが、下棚部材を上下移動するための専用の下吊り具を無端チェンに配設してもよい。
５．下部棚群に関しては、上下の各下棚部材を可撓性を有するワイヤ等の索体で連結した構成を採用し得る。この場合に、複数の下棚部材を、上棚部材と同一の構成とし、無端索体に走行方向に所定間隔離間して複数配設した対応する下吊り具により各下棚部材を上下移動させることができる。
６．第２および第３の別実施例において、作動軸に配設される前後の駆動ベベルギヤと前後の駆動軸に配設される前後の従動ベベルギヤとの噛合位置を変更することで、前後の駆動軸を逆方向に回転する構成とし得る。また、両別実施例におけるセルフロック性を有する動力伝達手段としては、ウォームとウォームホイールに限定されるものでなく、ハイポイドギヤ等、その他のセルフロック性を有するものを適宜に採用し得る。
７．実施例、第１別実施例および第４別実施例では、ギヤモータを前駆動軸に連結して回転駆動する場合で説明したが、後駆動軸に連結して回転駆動するよう構成してもよい。
８．各棚部材の各係合部を、物品が収納される室の外部に延出させ、該係合部に係合して棚部材を上下移動させる上下の吊り具を配設した無端チェンも室外に配置する構成を採用し得る。この構成によれば、物品を収納する室内に無端チェン等が露出しないから、見栄えを良くすることができる。
９．実施例では、昇降装置を配設する保管庫として食器消毒保管庫を例に挙げて説明したが、本願はこれに限定されるものでなく、棚枠内に複数の棚部材が上下移動可能に配設されるものであれば、例えば冷蔵庫、温蔵庫等、その他の保管庫に採用することができる。
【００４４】
【発明の効果】
以上説明した如く、本発明に係る棚部材の昇降装置によれば、無端索体における上下方向に走行する一方の直線走行部を移動する上吊り具により上棚部材を上下移動させ、また無端索体における上下方向に走行する他方の直線走行部を移動する下吊り具により下棚部材を上下移動させるよう構成したから、簡単な構成で、物品の出し入れ作業を良好に行ない得る高さ位置に各棚部材を移動させることができる。また、昇降装置の構成を簡略化し得るから、部品点数を低減して製造コストを低廉に抑え得ると共に、組立てやメンテナンス等が容易となる。
【００４５】
前記棚部材の各側方において並列に配設された一対の無端索体を相互に逆向きに循環走行するよう構成することで、上下の棚部材の形状を、該無端チェンの離間方向で対称とすることができ、該棚部材の安定した上下移動を達成し得る。また、上下の棚部材の夫々を複数配設した場合においても、全ての棚部材を、物品の出し入れ作業を良好に行ない得る高さ位置に移動させることができ、作業者は物品の出し入れ作業を楽に行ない得る。更に、最下位の上棚部材を上下移動させる上吊り具を、下棚部材を上下移動させる下吊り具として兼用することで、更に部品点数を低減することができる。
【図面の簡単な説明】
【図１】本発明の好適な実施例に係る棚部材の昇降装置を採用した食器消毒保管庫を示す概略構成図である。
【図２】実施例に係る昇降装置の概略斜視図である。
【図３】実施例に係る第１上棚部材に開設された第１上透孔と、対応する第１上吊り具との関係を示す要部概略平面図である。
【図４】実施例に係る第２上棚部材に開設された第２上透孔と、対応する第２上吊り具との関係を示す要部概略平面図である。
【図５】実施例に係る第３上棚部材に開設された第３上透孔と、対応する第３上吊り具との関係を示す要部概略平面図である。
【図６】実施例に係る第４上棚部材に開設された第４上透孔と、対応する第４上吊り具との関係を示す要部概略平面図である。
【図７】実施例に係る第１上棚部材を示す概略平面図である。
【図８】実施例に係る第１下棚部材を示す概略平面図である。
【図９】実施例に係る第２または第３の下棚部材を示す概略平面図である。
【図１０】実施例に係る第１下棚部材に開設された下透孔と、対応する第４上吊り具との関係を示す要部概略平面図である。
【図１１】実施例に係る昇降装置の動作説明図であって、最下部に位置する下部棚群における第１下棚部材の上に４枚の上棚部材が積載されている状態を示す。
【図１２】実施例に係る昇降装置の動作説明図であって、下部棚群における第２下棚部材を物品の出し入れ位置まで上昇させた状態を示す。
【図１３】実施例に係る昇降装置の動作説明図であって、下部棚群における第３下棚部材を物品の出し入れ位置まで上昇させた状態を示す。
【図１４】実施例に係る昇降装置の動作説明図であって、第１上棚部材を上昇して第２上棚部材に対する物品の出し入れを可能とした状態を示す。
【図１５】実施例に係る昇降装置の動作説明図であって、第４上棚部材を上昇して第１下棚部材に対する物品の出し入れを可能とした状態を示す。
【図１６】第１別実施例に係る昇降装置を採用した食器消毒保管庫を示す概略構成図である。
【図１７】第１別実施例に係る昇降装置の駆動部を示す概略平面図である。
【図１８】第２別実施例に係る昇降装置の駆動部を示す概略平面図である。
【図１９】第３別実施例に係る昇降装置の駆動部を示す概略平面図である。
【図２０】第４別実施例に係る昇降装置の駆動部を示す概略平面図である。
【図２１】棚部材の案内構造を追加した第５別実施例に係る昇降装置の上棚部材を示す概略平面図である。
【図２２】棚部材の別の案内構造を採用した第６別実施例に係る昇降装置の棚部材の要部概略平面図である。
【符号の説明】
１１断熱箱体(棚枠)，１２上棚部材，１２Ｄ第４上棚部材
１３下棚部材，１３Ｂ第２下棚部材(別下棚部材)
１３Ｃ第３下棚部材(別下棚部材)，２２前無端チェン(無端索体)
２３後無端チェン(無端索体)，３１上吊り具
３１Ｄ第４上吊り具(下吊り具)，３２上係合部，３３上透孔
３４棚柱(連結部材)，３６下透孔，３５下係合部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting / lowering device for a shelf member, and more particularly to a lifting / lowering device for a vertically movable shelf member used in a tableware disinfection storage or a cold / hot storage for storing articles such as tableware.
[0002]
[Prior art]
For example, in a tableware disinfection storage, when tableware is taken in and out of each shelf member fixedly arranged in multiple stages in the box body, the tableware is taken in and out of the shelf member at a high position or the shelf member at a low position. This is a cumbersome and cumbersome task, with the use of a lip or with the waist bent. Therefore, the shelf members configured to be movable up and down are connected to each other with a flexible wire, and the wire connected to the uppermost shelf member is rolled up or fed out by an elevating mechanism, so that the shelf member can be used as a tableware. Some have been proposed to move to a height that is easy to put in and out. However, in the configuration in which all the shelf members are connected to each other with wires, the shelf member positioned lower than the middle stage in the state where the highest shelf member is lifted up to the uppermost position is a position where the workability is good. However, the operator was forced to take a bad working posture such as bending his / her waist when taking in and out the tableware with respect to the shelf member positioned below.
[0003]
In order to cope with the above-mentioned problems, a plurality of shelf members arranged in the shelf frame so as to be movable up and down are divided into an upper shelf group and a lower shelf group, and the upper and lower shelf groups are moved up and down separately. There is (for example, Patent Document 1). In the lifting device disclosed in Patent Document 1, the upper shelf group is connected to each other with a dedicated shelf wire rope, and the upper shelf wire connected to the uppermost shelf member in the upper shelf group is a box body. It connects with the predetermined position of the endless chain arrange | positioned at the upper part, and an upper shelf group is moved up and down by the forward / reverse rotation of this endless chain. On the other hand, the lower shelf group is connected to each other by shelf columns, and the lower shelf wire connected to the uppermost shelf member in the lower shelf group is engaged with and disengaged from the hook provided in the endless chain. Connect to possible wiring shaft. Then, by engaging the hook that moves integrally with the endless chain with the wiring shaft, the lower shelf group can be raised to a height position with good workability in a state where the stacked upper shelf group is placed. It is configured as follows.
[0004]
In addition, the hoisting devices connected to all the shelf members are connected to the corresponding hoisting devices disposed in the upper part of the shelf frame, and the auxiliary hoisting devices connected to the shelf members at the middle position are connected to the auxiliary hoisting device, and the motor By switching between a state where the hoisting device is rotated and a state where the auxiliary hoisting device is rotated by the electromagnetic clutch disposed in the rack, the shelf member below the middle stage can be raised to a height position with good workability. Some (for example, Patent Document 2).
[0005]
[Patent Document 1]
Japanese Examined Patent Publication No. 7-84242
[Patent Document 2]
Japanese Patent No. 2662837
[0006]
[Problems to be solved by the invention]
However, the lifting device disclosed in Patent Document 1 has a problem that special parts are required and the number of parts is increased, the structure becomes complicated, the assembly and maintenance become complicated, and the manufacturing cost increases. Also in the lifting device disclosed in Patent Document 2, an electromagnetic clutch for switching power transmission from the motor, a winding device that moves all the shelf members up and down, and an auxiliary winding device that moves the lower shelf member up and down Is required separately, increasing the number of parts and increasing manufacturing costs. Further, like the lifting device disclosed in Patent Document 1, there is a problem that the structure becomes complicated and the assembly and maintenance become complicated.
[0007]
OBJECT OF THE INVENTION
The present invention has been proposed in view of the above-mentioned problems inherent in the prior art described above, and has been proposed to suitably solve this problem. The shelf member is moved to a height position with good workability with a simple configuration. An object of the present invention is to provide a possible lifting device for a shelf member.
[0008]
[Means for Solving the Problems]
In order to overcome the above-mentioned problems and achieve the intended purpose suitably, the lifting and lowering device for a shelf member according to the present invention comprises:
An upper shelf member and a lower shelf member that are arranged inside the shelf frame and are movable up and down;
A plurality of endless cords arranged in the shelf frame and circulating in the vertical direction;
An upper through hole that is established in the upper engagement portion provided in the upper shelf member, and through which one linear traveling portion that travels in the vertical direction in each endless cord,
A lower through hole that is established in a lower engagement portion provided in the lower shelf member and through which the other straight traveling portion that travels in the vertical direction in each endless cord body passes,
Arranged in each endless cord, When running the endless cord so that one straight running part moves upward Engage with the upper engagement portion of the upper shelf member from below, In this engaged state An upper suspension that moves the upper shelf member up and down by traveling in the forward and reverse directions of the endless cord;
Arranged in each endless cord, When running the endless cord so that the other straight running part moves upward Engage with the lower engaging portion of the lower shelf member from below, In this engaged state A lower suspension tool that moves the lower shelf member up and down by traveling in the forward and reverse directions of the endless cord,
The upper hanger and the lower hanger correspond to the upper hanger and the lower hanger in a state where the upper hanger and the lower hanger are not engaged with the upper engaging portion and the lower engaging portion, respectively. It is arrange | positioned at the said endless cord so that it may be located under an engaging part and a lower engaging part It is characterized by that.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the lifting / lowering device for a shelf member according to the present invention will be described below with reference to the accompanying drawings.
[0010]
As shown in FIG. 1, a tableware disinfection storage (storage) 10 in which the shelf member lifting apparatus according to the embodiment is adopted includes a plurality of upper shelf members 12 inside a heat insulation box 11 having a heat insulation structure forming a shelf frame. The plurality of lower shelf members 13 are arranged to be movable up and down in an up-and-down relationship, and each of the shelf members 12 and 13 is configured to be moved up and down by an elevating device 14 described later. A heat insulating door (not shown) that closes an opening formed in the heat insulating box 11 so as to be openable and closable is disposed on the front surface of the heat insulating box 11, and the shelf members are arranged through the openings. Articles M such as tableware for 12, 13 and a rack in which the tableware is stored are taken in and out. In addition, hot air is circulated and supplied into the inside of the heat insulating box 11 by a heating device (not shown), and the tableware and the like placed on the shelf members 12 and 13 are heated to be disinfected and dried.
[0011]
A machine room 15 is defined above the heat insulating box 11, and a main part of the lifting device 14 is disposed in the machine room 15. That is, as shown in FIG. 2, a pair of drive shafts 16 and 17 extending in the left-right direction (width direction) are rotatably disposed in a parallel state at positions separated from the front and rear of the machine room 15. The front drive sprockets 18 and 18 are disposed so as to rotate integrally with the left and right shaft ends of the front drive shaft 16 located on the front side, and on the left and right shaft ends of the rear drive shaft 17 located on the rear side. The rear drive sprockets 19, 19 are arranged to rotate integrally. Further, front and rear driven sprockets 20, 20, 21, and 21 are rotatably disposed at lower positions inside the heat insulating box 11 corresponding to the front and rear drive sprockets 18, 18, 19, and 19, respectively. A front endless chain (endless cord) 22 for raising and lowering is wound around each front drive sprocket 18 and front driven sprocket 20 corresponding to the top and bottom on the front side, and each rear drive sprocket corresponding to the top and bottom on the rear side. 19 and a rear driven sprocket 21 are wound around a rear endless chain (endless cord) 23 for raising and lowering.
[0012]
In the machine room 15, a gear motor 24 is disposed between the front and rear drive shafts 16 and 17 as a drive motor that can rotate forward and backward, and is disposed so as to rotate integrally with an output shaft 24 a of the motor 24. A first drive chain 27 is wound between the first sprocket 25 and a second sprocket 26 arranged to rotate integrally with the front drive shaft 16. A third sprocket 28 is disposed on the front drive shaft 16 so as to rotate integrally. The third sprocket 28 and a fourth sprocket 29 disposed so as to rotate integrally with the rear drive shaft 17 Between these, the second drive chain 30 is wound. That is, when the gear motor 24 is rotated forward and backward, the front and rear drive shafts 16 and 17 are rotated forward and backward in the same direction, and thereby the four extending in the vertical direction at the inner four corners of the heat insulating box 11 are obtained. The endless chains 22, 22, 23, 23 for raising and lowering are configured to circulate in the same direction. In the embodiment, the case where the first linear traveling unit (one linear traveling unit) that is positioned on the front side and travels in the vertical direction in each endless chain 22 and 23 moves upward is defined as forward rotation and is positioned on the rear side. A case where the second linear traveling unit (the other linear traveling unit) traveling in the vertical direction moves upward is referred to as reverse rotation.
[0013]
Each of the endless chains 22 and 23 for raising and lowering is provided with a number of upper suspension members 31 (four in the embodiment) corresponding to the number of the upper shelf members 12 spaced apart by a predetermined distance in the traveling direction. And are configured to move together. In addition, in an Example, regarding the upper hanger 31, it distinguishes with the 1st upper hanger 31A, the 2nd upper hanger 31B, the 3rd upper hanger 31C, and the 4th upper hanger 31D in order from the upper side in FIG. To do. And these four hanging tools 31A, 31B, 31C, 31D are set so that each has a different shape or size. For example, as shown in FIG. 3, the first upper suspender 31 A positioned at the top in FIG. 1 is positioned at a lower position of the pair of linear plate members spaced apart in the width direction, whereas the longitudinal dimension is short. As shown in FIG. 4, the second upper hanger 31 B has a long longitudinal dimension of a pair of linear plate members that are separated in the width direction. Further, as shown in FIG. 5, the third upper hanger 31C located in the lower part has a pair of U-shaped plate members spaced apart in the width direction and the front and rear dimensions thereof are short. As shown in FIG. 6, the fourth upper hanger 31 D that is positioned has a long longitudinal dimension of a pair of U-shaped plate members that are spaced apart in the width direction. The first upper suspension tool 31A, the second upper suspension tool 31B, the third upper suspension tool 31C, and the fourth upper suspension tool 31D disposed in the four endless chains 22, 22, 23, and 23 correspond to each other. It is set so that the four (same type) upper suspenders 31 face the same horizontal level, and as described later, the four upper suspenders 31 support the four corners of the corresponding upper shelf members 12 so as to move up and down. Composed.
[0014]
The gear motor 24 is controlled by a control means (not shown) based on signals from a sensor for detecting the positions of the upper and lower shelf members 12 and 13 and a rotation detector for detecting the rotation speed of the motor 24. When the article M is put in and out, the upper and lower shelf members 12 and 13 arranged in the heat insulation box 11 are set to stop at a preset put-in and put-out position where the preset work can be easily performed. .
[0015]
In the embodiment, the upper shelf member 12 disposed inside the heat insulating box 11 is provided in four stages in the vertical direction, and in order from the upper side, the first upper shelf member 12A, the second upper shelf member 12B, and the third upper shelf member 12C. The lower shelf member 13 is provided in three upper and lower stages, and in order from the upper side, the first lower shelf member 13A, the second lower shelf member 13B, and the third lower shelf member 13D. A distinction is made with 13C. The shapes of the upper shelf members 12 are the same. For example, if the first upper shelf member 12A is taken as an example, as shown in FIG. 7, a plurality of vertical members and cross members are combined to form a substantially planar shape. . At both ends in the width direction of the first upper shelf member 12A, both first straight travels in the front and rear endless chains 22 and 23 arranged in a side-by-side relationship on each side of the first upper shelf member 12A are provided. Upper engaging portions 32 and 32 projecting outward are provided so as to be separated from each other in the front-rear direction by the separation dimension of the portions. Each upper engagement portion 32 is provided with an upper through-hole 33 through which the first straight traveling portion of the front and rear endless chains 22 and 23 passes. When the endless chains 22 and 23 circulate, the first straight traveling is performed. The portion passes through the upper through-hole 33 up and down. As for the upper through hole 33, the first upper through hole 33A, the second upper through hole 33B, and the third upper through hole are sequentially arranged from the upper side corresponding to the upper shelf members 12A, 12B, 12C, and 12D. The holes 33C and the fourth upper through holes 33D are distinguished and referred to.
[0016]
The upper through-hole 33 is set to have a different shape or size for each upper shelf member 12A, 12B, 12C, 12D. That is, the first upper through-hole 33A in the first upper shelf member 12A located at the uppermost position allows passage of the first upper suspension tool 31A disposed in the endless chains 22 and 23 for raising and lowering, as shown in FIG. In a state where the shape or size is not allowed and the first upper suspension 31A is engaged with the upper engagement portion 32 from below, the first straight traveling portion of the endless chains 22, 23 is moved to the first upper suspension. When 31A moves up and down, the first upper shelf member 12A is moved up and down. Further, as shown in FIG. 4, the second upper through hole 33B in the second upper shelf member 12B located below the first upper shelf member 12A is a second upper suspension member disposed in the endless chains 22 and 23 for raising and lowering. The first linear travel portion in the endless chains 22 and 23 is set in a shape or dimension that does not allow the passage of the tool 31B, and the second upper suspension tool 31B is engaged with the upper engagement portion 32 from below. When the second upper suspending tool 31B moves in the vertical direction, the second upper shelf member 12B is moved up and down. However, the second upper through hole 33B is set so as to allow passage of the first upper suspension tool 31A, and the first upper suspension tool 31A is separated from the upper engagement portion 32 of the first upper shelf member 12A and is endlessly changed. When moving the first straight traveling portion 22 and 23 downward, the first upper suspension tool 31A does not engage the upper engagement portion 32 of the second upper shelf member 12B, and the second upper through hole 33B is not engaged. It can be passed.
[0017]
As shown in FIG. 5, the third upper through hole 33C in the third upper shelf member 12C positioned below the second upper shelf member 12B is a third upper suspension tool disposed in the endless chains 22 and 23 for raising and lowering. The first linear travel portion in the endless chains 22 and 23 is set to a shape or size that does not allow the passage of 31C, and the third upper suspension 31C is engaged with the upper engagement portion 32 from below. When the 3 upper hanger 31C moves in the vertical direction, the third upper shelf member 12C is moved up and down. However, the third upper through hole 33C is set to allow passage of the first upper suspension tool 31A and the second upper suspension tool 31B, and the first upper suspension tool 31A and the second upper suspension tool 31B correspond to each other. When the first upper traveling member 12A and the second upper shelf member 12B are moved away from the upper engaging portion 32 of the first upper shelf member 12B and moved downward in the first linear traveling portion of the endless chains 22, 23, the first upper suspension member 31A and the second upper suspension member 31A The upper suspension tool 31B can pass through the third upper through hole 33C without engaging with the upper engagement portion 32 of the third upper shelf member 12C.
[0018]
Further, the fourth upper through hole 33D in the lowermost fourth upper shelf member 12D positioned below the third upper shelf member 12C is provided in the endless chains 22 and 23 for raising and lowering as shown in FIG. The fourth upper shelf member 12D is set in a shape or size that does not allow the passage of the fourth upper suspension tool 31D, and the fourth upper suspension tool 31D moves up and down the first straight traveling portion in the endless chains 22 and 23. Is moved up and down. However, the fourth upper through hole 33D is set so as to allow passage of the first upper suspension tool 31A, the second upper suspension tool 31B, and the third upper suspension tool 31C. The first straight traveling in the endless chains 22, 23 is spaced apart from the upper engaging portions 32 of the first upper shelf member 12A, the second upper shelf member 12B, and the third upper shelf member 12C to which the suspension 31B and the third upper suspension member 31C correspond. When the portion is moved downward, the first upper suspension 31A, the second upper suspension 31B, and the third upper suspension 31C are engaged with the upper engagement portion 32 without engaging with the upper engagement portion 32 of the fourth upper shelf member 12D. 4 can pass through the upper through-hole 33D.
[0019]
That is, the corresponding upper through-holes 33A, 33B, 33C, 33D opened in each upper shelf member 12A, 12B, 12C, 12D are the upper through-hole 33 positioned at the upper level and the upper through-hole 33 positioned at the lower level. To set different shapes or dimensions. Further, the upper suspension tools 31A, 31B, 31C, and 31D corresponding to the upper shelf members 12A, 12B, 12C, and 12D engage with the upper engagement portions 32 of the corresponding upper shelf members 12 and are positioned below them. The upper through hole 33 of the upper shelf member 12 is set so as to be able to pass through, and the upper and lower upper suspension members 33, 33 from the state where the four upper shelf members 12A, 12B, 12C, 12D are stacked on each other (see FIG. 11). Are separated from each other by the separation length of the upper shelf members 12A, 12B, 12C, 12D of the respective stages (see FIGS. 14 and 15).
[0020]
The three lower shelf members 13 have the same basic shape, and as shown in FIGS. 8 and 9, a plurality of vertical members and cross members are combined to form a substantially rectangular plane, The lower shelf members 13, 13 opposed to each other in the vertical direction are connected to each other at the four corners by shelf columns 34 as connection members. That is, the three lower shelf members 13 are configured to move up and down while maintaining a state where they face each other in parallel with being separated by the height of the shelf column 34. At both ends in the width direction of the first lower shelf member 13A positioned at the uppermost position in the lower shelf group, both second linear travel portions of the front and rear endless chains 22 and 23 disposed in a parallel relationship are provided. Lower engaging portions 35 and 35 are provided so as to protrude outward in the front-rear direction by a distance dimension. Each lower engagement portion 35 is provided with a lower through hole 36 through which the second straight traveling portions in the front and rear endless chains 22 and 23 pass. When the endless chains 22 and 23 circulate, the second straight traveling is performed. The portion is configured to pass vertically through the lower through hole 36. In the embodiment, the two lower shelf members 13B and 13C that are connected to the lower portion of the first lower shelf member 13A via the shelf column 34 are different types of different lower shelf members that do not include the lower engaging portion. ing.
[0021]
As shown in FIG. 10, the lower through hole 36 in the first lower shelf member 13A is set to a shape or size that does not allow passage of the fourth upper suspension 31D disposed in the endless chains 22 and 23 for raising and lowering. Is done. Further, as shown in FIG. 1, the lower shelf group is regulated at the lowermost position by a stopper 37 disposed at an appropriate position inside the heat insulating box 11, and the lower shelf group 13A at this time has a lower engagement. The height position of the joint portion 35 is set so as to be positioned above the lower curved traveling portion in the endless chains 22 and 23. That is, the fourth upper suspension 31 D that moves the second linear traveling unit upward through the curved traveling unit after moving the first linear traveling unit of the endless chains 22, 23 downward with respect to the lower engaging unit 35. The first lower shelf member 13A, that is, the lower shelf group can be moved upward by engaging from below. As described above, in the embodiment, the fourth upper suspending tool 31D that moves the fourth upper shelf member 12D up and down also serves as the lower suspending tool that moves the first lower shelf member 13A (upper shelf group) up and down.
[0022]
In addition, each lower engaging part 35 provided in 13 A of 1st lower shelf members is provided in the position where each upper suspension tool 31 which moves below the 1st linear running part of the said endless chains 22 and 23 does not interfere. . Further, as shown in FIG. 11, in the state where the four upper shelf members 12 are stacked on the first lower shelf member 13A in the lower shelf group positioned at the lowermost position regulated by the stopper 37, The suspension 31A is positioned below the fourth upper shelf member 12D, and the fourth upper suspension 31D is set to face the first lower shelf member 13A. From this state, the endless chains 22 and 23 are rotated forward or By reversing, the vertical movement of either the upper shelf group or the lower shelf group is performed. That is, when the upper suspending members 31A to 31D are engaged with the upper engaging portions 32 of the corresponding upper shelf members 12A to 12D to move the upper shelf members 12A to 12D up and down, they function as the lower suspenders. The fourth upper suspension tool 31D does not engage with the lower engagement portion 35 of the first lower shelf member 13A, and the fourth upper suspension tool 31D engages with the lower engagement portion 35 of the first lower shelf member 13A. When the first lower shelf member 13A is moved up and down, the upper suspension members 31A to 31D and the corresponding upper shelf members 12A to 12D are not engaged with the upper engagement portions 32, so that the upper suspension members 31A to 31D are not engaged. Tools 31 A to 31 D are disposed in the endless chains 22 and 23.
[0023]
[Effect of the embodiment]
Next, the operation of the lifting device for the shelf member according to the embodiment will be described below. It should be noted that the articles M such as tableware are not placed on all the shelf members 12 and 13, and the lower shelf group is positioned at the lowermost portion regulated by the stopper 37 as shown in FIG. It is assumed that four upper shelf members 12 are stacked on the shelf member 13A. Further, the position of the shelf member that can satisfactorily put in and out the article M with respect to the heat insulating box 11 is the position of the first lower shelf member 13A in the lower shelf group that is regulated by the stopper 37 and is located at the lowermost position (in and out). (Position).
[0024]
In the state described above, by rotating the gear motor 24 in the reverse rotation direction, each of the fourth upper suspenders 31D disposed in the four endless chains 22 and 23 for raising and lowering the second linear traveling unit Move upward. As a result, the fourth upper suspension members 31D engage with the lower engagement portions 35 of the uppermost first lower shelf member 13A in the lower shelf group, respectively, from below, and the first lower shelf member 13A, that is, the lower portion When the shelf group moves upward and the second lower shelf member 13B reaches the loading / unloading position as shown in FIG. 12, the gear motor 24 stops. Thus, the operator can easily place (accommodate) the article M on the second lower shelf member 13B in an easy posture without bending the waist.
[0025]
When the gear motor 24 is further rotated in the reverse rotation direction and the fourth upper suspension 31D is moved upward in the second linear moving portion, the lower shelf group is also moved upward, and the third lower shelf is moved as shown in FIG. The member 13C arrives at the loading / unloading position, and at this time, the gear motor 24 stops. Therefore, the operator can easily place the article M on the third lower shelf member 13C in an easy posture.
[0026]
Next, by rotating the gear motor 24 in the forward rotation direction, each of the fourth upper suspension members 31D of the four endless chains 22 and 23 for raising and lowering the lower engaging portion of the first lower shelf member 13A. In the state engaged with 35, the second linear traveling portion is moved downward, and accordingly, the lower shelf group is also moved downward. Then, after the lower shelf group has arrived at the lowermost portion where the downward movement is restricted by the stopper 37, the fourth upper suspension tool 31D is separated downward from the lower engagement portion 35 of the first lower shelf member 13A. However, the lower shelf group is not moved up and down.
[0027]
The gear motor 24 stops when the fourth upper suspending tool 31D is separated downward from the lower engaging portion 35 of the first lower shelf member 13A, and the upper and lower shelf groups return to the initial positions shown in FIG. At this time, since the first upper shelf member 12A in the upper shelf group stacked on the first lower shelf member 13A faces the aforementioned loading / unloading position, the article M can be easily put on the first upper shelf member 12A. Can be placed in a proper posture.
[0028]
By the rotation of the gear motor 24 in the forward rotation direction described above, the first upper suspension tools 31A of the four endless chains 22 and 23 for raising and lowering move the first linear traveling unit upward. That is, the first upper suspending tool 31A facing the lower side of the upper shelf group stacked on the first lower shelf member 13A is passed through each of the upper and lower upper shelf members 12D, 12C, and 12B. After passing through the holes 33D, 33C, and 33B from below, the first upper shelf member 12A is engaged with the upper engagement portion 32 from below, and the first upper shelf member 12A is moved upward. Thereby, as shown in FIG. 14, the first upper shelf member 12A is spaced upward from the lower second upper shelf member 12B, and between the upper shelf members 12A and 12B, the first upper suspension member 31A and the second upper shelf member 12A are separated. A space corresponding to the separation distance from the hanger 31B is defined. In this state, since the second upper shelf member 12B faces the loading / unloading position, the article M can be placed on the second upper shelf member 12B in an easy posture.
[0029]
Thereafter, the second upper shelf member 12B and the third upper shelf member 31C sequentially move the corresponding second upper shelf member 12B and the third upper shelf member 12C upward, and the gear motor 24 is stopped, and the second upper shelf member 12B and the third upper shelf member 12C are located below the second upper shelf member 12B and the third upper shelf member 12C. Each time the three upper shelf members 12C and the fourth upper shelf member 12D face the loading / unloading position, the article M is placed on the corresponding upper shelf members 12C and 12D. Also in this case, as described above, the placement work of the article M on the upper shelf members 12C and 12D can be performed in an easy posture without bending the waist. Then, when the first upper shelf member 12A comes to the top and the gear motor 24 stops, as shown in FIG. 15, the fourth upper shelf member 12D corresponding to the fourth upper suspension member 31D becomes the first lower shelf member. The article M can be placed in an easy posture with respect to the first lower shelf member 12A which is supported at a position spaced upward from 13A and faces the loading / unloading position.
[0030]
In addition, when taking out the article M from the respective shelf members 12 and 13, contrary to the above, the respective shelf members 12 and 13 are sequentially stopped and held at the loading and unloading positions. The work of taking out the article M from 13 can be performed in an easy posture.
[0031]
That is, in the elevating device 14 according to the embodiment, the upper shelf group and the lower shelf group are moved up and down separately only by traveling the four endless chains 22 and 23 in the forward and reverse directions, and all the shelf members 12, 13 can be moved to a height position where the operator can satisfactorily perform the work of taking in and out the article M such as tableware. Moreover, since the vertical movement between the upper shelf group and the lower shelf group only needs to be reversed, the configuration of the lifting device 14 can be simplified, the manufacturing cost can be reduced, and the assembly cost can be reduced. Maintenance and the like are also simplified.
[0032]
[Another example]
FIGS. 16-22 shows the raising / lowering apparatus based on another Example, Comprising: Since the fundamental structure is the same as the Example mentioned above, only a different part is demonstrated and the same code | symbol is used about the same member Is shown. That is, the lifting device 38 according to the first alternative embodiment shown in FIGS. 16 and 17 is rotated before being driven by the gear motor 24 via the first sprocket 25, the first drive chain 27, and the second sprocket 26. A drive gear 39 is disposed on the drive shaft 16 so as to rotate integrally. Further, a fifth sprocket 42 is disposed so as to rotate integrally with a rotation shaft 41 on which a driven gear 40 meshing with the drive gear 39 is disposed, and is integrated with the fifth sprocket 42 and the rear drive shaft 17. A third drive chain 44 is wound around the sixth sprocket 43 arranged so as to rotate. Accordingly, when the gear motor 24 is rotated, the front and rear drive shafts 16 and 17 are rotated in opposite directions, and are rotated by the front endless chains 22 and 22 rotated by the front drive shaft 16 and the rear drive shaft 17. Then, the endless chains 23 and 23 are configured to circulate in the opposite direction. In the first alternative embodiment, in the front endless chain 22, the linear traveling portion that is located on the front side and travels in the vertical direction is the first linear traveling portion (one linear traveling portion) as in the above-described embodiment. In contrast, the straight traveling part that is located on the rear side and travels in the vertical direction is the second straight traveling part (the other linear traveling part), whereas the rear endless chain 23 is located on the front side and travels in the vertical direction. The straight traveling portion that performs this operation is the second straight traveling portion (the other linear traveling portion), and the linear traveling portion that is located on the rear side and travels in the vertical direction is the first straight traveling portion (one linear traveling portion).
[0033]
The front and rear endless chains 22 and 23 are respectively provided with first to fourth upper suspension tools 31A to 31D similar to those described above at predetermined intervals in the traveling direction. The lifting tools 31A to 31D are set to move up and down while maintaining the same horizontal level in the first linear traveling part or the second linear traveling part of the front and rear endless chains 22, 23. The upper engaging portions 32 provided on the upper shelf member 12 are positioned so as to correspond to the first linear traveling portions located outside the front and rear endless chains 22 and 23, and move up and down the first linear traveling portions. The corresponding upper shelf members 12A to 12D are configured to be moved up and down by the upper suspension tools 31A to 31D.
[0034]
On the other hand, each lower engagement part 35 provided in the first lower shelf member 13A is positioned so as to correspond to the second straight traveling part located inside the front and rear endless chains 22, 23, and the second straight line The first lower shelf member 13 A is configured to be moved up and down by the fourth upper suspension tools 31 D that move up and down the traveling unit.
[0035]
That is, in the first alternative embodiment, similarly to the above-described embodiment, the upper shelf group and the lower shelf group are moved up and down separately only by running the four endless chains 22 and 23 in the forward and reverse directions. Thus, it is possible to move all the shelf members 12 and 13 to a height position at which the operator can satisfactorily perform the work of taking in and out the article M such as tableware. Moreover, since the vertical movement between the upper shelf group and the lower shelf group can be switched only by reversing the endless chains 22 and 23, the configuration of the lifting and lowering device 38 can be simplified, the manufacturing cost can be reduced, and the assembly cost can be reduced. Maintenance and the like are also simplified. Furthermore, in 1st another Example, upper shelf members 12A-12D are moved by the 1st-4th upper suspension tools 31A-31D which move up and down the 1st linear running part located outside the endless chains 22 and 23 located in the front and back. Since the first lower shelf member 13A (lower shelf group) is moved up and down by the fourth upper suspension tool 31D that moves up and down and moves up and down the second linear traveling portion located inside, the upper suspension tools 31A to 31A The moving position of 31D is symmetric with respect to the center of the heat insulating box 11 in the front-rear direction. Thereby, the shape of the upper and lower shelf members 12, 13 can be made symmetrical in the front-rear direction (the direction in which the front and rear endless chains 22, 23 are separated), and the shelf members 12, 13 can be stably moved up and down. It becomes possible.
[0036]
In the lifting device 49 of the second alternative embodiment shown in FIG. 18, the seventh sprocket 51 is integrated with the operating shaft 50 that extends in the front-rear direction orthogonal to the front and rear drive shafts 16 and 17 and is rotatably arranged. A fourth drive chain 52 is wound around the seventh sprocket 51 and the first sprocket 25 of the gear motor 24. Front and rear drive bevel gears 55 and 56 that mesh with front and rear driven bevel gears 53 and 54 that are integrally disposed with the corresponding front and rear drive shafts 16 and 17 are integrally rotated at both shaft ends of the operating shaft 50. The front and rear drive shafts 16 and 17 are configured to rotate forward and reverse in the same direction by forward and reverse rotation of the operating shaft 50. In the machine room 15, a fan motor 57, an electrical box 58, and an exhaust duct 59 are disposed at positions that do not interfere with the drive unit in the lifting device 49.
[0037]
The lifting device 60 of the third alternative embodiment shown in FIG. 19 differs from the second alternative embodiment only in the power transmission means from the gear motor 24 to the operating shaft 50. That is, the worm wheel 61 is disposed so as to rotate integrally with the operating shaft 50 in which the front and rear drive bevel gears 55 and 56 are disposed at both shaft ends, and the output shaft of the gear motor 24 is disposed on the worm wheel 61. The worm 62 disposed in 24a is configured to mesh. Therefore, by rotating the gear motor 24 forward and backward, the front and rear drive shafts 16 and 17 are rotated forward and backward in the same direction under the meshing action of the worm 62 and the worm wheel 61.
[0038]
The lifting device 63 of the fourth alternative embodiment shown in FIG. 20 is configured to directly rotate and drive the front drive shaft 16 by the gear motor 24, unlike the second and third alternative embodiments. That is, the worm wheel 64 is arranged to rotate integrally with the front drive shaft 16, and the worm 65 arranged on the output shaft 24 a of the gear motor 24 is engaged with the worm wheel 64. Therefore, by rotating the gear motor 24 forward and backward, the front drive shaft 16 is rotated forward and backward under the meshing action of the worm 65 and the worm wheel 64. The front and rear drive shafts 16 and 17 are connected by the third sprocket 28, the fourth sprocket 29, and the second drive chain 30 as in the above-described embodiment, and both the drive shafts 16 and 17 rotate in the same direction. It is like that.
[0039]
In the second to fourth other embodiments described above, the same operational effects as those of the above-described embodiments can be obtained. In the third and fourth alternative embodiments, the endless chains 22 and 23 are formed by using worms 62 and 65 and worm wheels 61 and 64 having self-locking properties as power transmission means from the gear motor 24. Even when the gear is cut or the brake of the gear motor 24 breaks down, it is possible to suppress the fall of the upper and lower shelf members 12 and 13 and improve safety. That is, it is not necessary to provide a separate safety device, and the number of parts can be reduced. Furthermore, since the drive part in the raising / lowering devices 60 and 63 can be reduced in size, it can be employed in a small mechanical device. In the configuration in which the gear motor 24 is directly connected to the front drive shaft 16 as in the fourth alternative embodiment, the power transmission parts can be reduced to reduce the cost, and the maintainability is also improved.
[0040]
FIG. 21 shows a fifth alternative embodiment in which a guide structure is added to the upper and lower shelf members in the lifting device, and each of the upper engagement members 32 of the upper shelf members 12 has a through hole 45 penetrating vertically. The guide rod 46 that is disposed in the heat insulating box 11 and extends in the vertical direction is inserted through the four through holes 45 that are aligned in the vertical direction. That is, each upper shelf member 12 is configured to move up and down while being supported by the four guide rods 46 at its four corners. In addition, although not shown regarding the lower shelf member 13, while providing a through-hole in the lower engaging part 35 of the 1st lower shelf member 13A, 4th upper suspension tool 31D of 2nd and 3rd lower shelf member 13B, 13C is provided. An extension portion is provided at a position where the guide rod is not interfered with, and the guide rod is inserted through the through hole formed in the extension portion and the through hole provided in the lower engagement portion 35 in common.
[0041]
And by configuring in this way, it is possible to stably move the upper and lower shelf members 12 and 13 up and down and to prevent the shelf members 12 and 13 from shaking and scratching the inside of the heat insulating box 11. it can. Further, by preventing the shelves 12 and 13 from shaking, the outer dimensions of the shelves 12 and 13 can be increased, and the amount of the article M can be increased. Further, according to the configuration in which the four corners of the shelf members 12 and 13 are supported by the guide rod 46, the endless chains 22 and 23 are also used in the configuration of each embodiment in which the power transmission means having the self-locking property described above is not used. Even when the brakes of the gear motor 24 are broken or the brake of the gear motor 24 is broken, it is possible to suppress the fall of the upper and lower shelf members 12 and 13 by the sliding contact between the through hole 45 and the guide rod 46, thereby improving safety. To do.
[0042]
The structure for guiding the upper and lower shelf members 12 and 13 is not limited to the configuration shown in FIG. 21, and the upper and lower engaging portions 32 and 35, for example, as in the sixth embodiment shown in FIG. A guide member 47 having a C channel shape may be provided at the side end portion of the guide member 48, and a guide member 48 formed in a T shape for guiding the guide member 47 may be disposed in the heat insulating box 11.
[0043]
[Example of change]
The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately employed.
1. In the embodiment, each shelf member is moved up and down by four endless chains. However, each shelf member is supported by a guide member and the like so as to be stably moved up and down, and is arranged facing the width direction. It is possible to adopt a configuration in which the vertical movement is performed by a pair of endless chains provided.
2. The endless cord body that moves the shelf member up and down is not limited to the endless chain, and may be an endless wire, belt, or the like.
3. The numbers of the upper shelf group and the lower shelf group are not limited to those shown in the embodiment, and at least one each is sufficient, and the number of the upper shelf members and the number of the upper suspension members disposed in the endless chain are the same. It only needs to match.
4). Regarding the lower suspender for moving the lower shelf member up and down, in the embodiment, the upper suspender for moving the lowermost upper shelf member in the upper shelf group up and down is used, but for moving the lower shelf member up and down A dedicated underhanger may be disposed in the endless chain.
5. With respect to the lower shelf group, a configuration in which the upper and lower lower shelf members are connected by a cord such as a flexible wire can be employed. In this case, the plurality of lower shelf members have the same configuration as the upper shelf member, and each lower shelf member is moved up and down by a corresponding lower suspender arranged in the endless cable body at predetermined intervals in the traveling direction. Can do.
6). In the second and third alternative embodiments, the front and rear drive shafts are changed by changing the meshing positions of the front and rear drive bevel gears disposed on the operating shaft and the front and rear driven bevel gears disposed on the front and rear drive shafts. Can be configured to rotate in the opposite direction. Further, the power transmission means having the self-locking property in the two different embodiments is not limited to the worm and the worm wheel, and other self-locking devices such as a hypoid gear can be appropriately employed.
7). In the embodiment, the first alternative embodiment, and the fourth alternative embodiment, the gear motor is connected to the front drive shaft for rotational driving. However, the gear motor may be connected to the rear drive shaft for rotational driving. .
8). Each end of the shelf member is extended to the outside of the chamber in which the articles are stored, and the endless chain provided with the upper and lower suspensions that engage the engagement portion to move the shelf member up and down is also outdoor. The structure arrange | positioned in can be employ | adopted. According to this configuration, since an endless chain or the like is not exposed in a room that stores articles, the appearance can be improved.
9. In the embodiment, the dish disinfection storage is described as an example of the storage for arranging the lifting device, but the present application is not limited to this, and a plurality of shelf members can be moved up and down in the shelf frame. As long as it is arranged, it can be employed in other storages such as a refrigerator and a warm storage.
[0044]
【The invention's effect】
As described above, according to the lifting and lowering device for a shelf member according to the present invention, the upper shelf member is moved up and down by the upper suspension tool that moves one linear traveling portion that travels in the vertical direction in the endless cord body, and the endless cord body. Since the lower shelf member is moved up and down by the lower lifting tool that moves the other straight traveling portion that travels in the vertical direction, each shelf is placed at a height position that allows the article to be taken in and out with a simple configuration. The member can be moved. In addition, since the configuration of the lifting device can be simplified, the number of parts can be reduced, manufacturing costs can be kept low, and assembly, maintenance, and the like are facilitated.
[0045]
By configuring the pair of endless cords arranged in parallel on each side of the shelf member to circulate in opposite directions, the shape of the upper and lower shelf members is symmetrical in the separation direction of the endless chain. And stable vertical movement of the shelf member can be achieved. In addition, even when a plurality of upper and lower shelf members are provided, all the shelf members can be moved to a height position where the article can be put in and out satisfactorily. You can do it easily. Furthermore, the number of parts can be further reduced by using the upper suspension tool that moves the lower shelf member up and down as the lower suspension device that moves the lower shelf member up and down.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a tableware disinfection storage that employs a lifting device for shelf members according to a preferred embodiment of the present invention.
FIG. 2 is a schematic perspective view of the lifting device according to the embodiment.
FIG. 3 is a schematic plan view of a main part showing a relationship between a first upper through hole established in a first upper shelf member according to an embodiment and a corresponding first upper suspension tool.
FIG. 4 is a schematic plan view of a main part showing a relationship between a second upper through hole formed in a second upper shelf member according to an embodiment and a corresponding second upper suspension tool.
FIG. 5 is a schematic plan view of a main part showing a relationship between a third upper through hole formed in a third upper shelf member according to an embodiment and a corresponding third upper suspension tool.
FIG. 6 is a schematic plan view of a main part showing a relationship between a fourth upper through hole formed in a fourth upper shelf member according to an embodiment and a corresponding fourth upper suspension tool.
FIG. 7 is a schematic plan view showing a first upper shelf member according to the embodiment.
FIG. 8 is a schematic plan view showing a first lower shelf member according to the embodiment.
FIG. 9 is a schematic plan view showing a second or third lower shelf member according to the embodiment.
FIG. 10 is a schematic plan view of a main part showing a relationship between a lower through hole formed in the first lower shelf member according to the embodiment and a corresponding fourth upper suspension tool.
FIG. 11 is an operation explanatory view of the lifting device according to the embodiment and shows a state where four upper shelf members are stacked on the first lower shelf member in the lower shelf group located at the lowermost portion.
FIG. 12 is an operation explanatory view of the lifting device according to the embodiment, and shows a state in which the second lower shelf member in the lower shelf group is raised to the article loading / unloading position.
FIG. 13 is an operation explanatory view of the lifting device according to the embodiment and shows a state in which the third lower shelf member in the lower shelf group is raised to the article loading / unloading position.
FIG. 14 is an operation explanatory diagram of the lifting device according to the embodiment, and shows a state in which the first upper shelf member is raised to allow articles to be taken in and out of the second upper shelf member.
FIG. 15 is an operation explanatory view of the lifting device according to the embodiment, showing a state in which the fourth upper shelf member is raised to allow articles to be taken in and out of the first lower shelf member.
FIG. 16 is a schematic configuration diagram showing a tableware disinfection storage that employs a lifting device according to a first alternative embodiment.
FIG. 17 is a schematic plan view showing a drive unit of the lifting device according to the first alternative embodiment.
FIG. 18 is a schematic plan view showing a drive unit of a lifting device according to a second alternative embodiment.
FIG. 19 is a schematic plan view showing a drive unit of a lifting device according to a third alternative embodiment.
FIG. 20 is a schematic plan view showing a drive unit of a lifting device according to a fourth alternative embodiment.
FIG. 21 is a schematic plan view showing an upper shelf member of a lifting device according to another fifth embodiment to which a shelf member guide structure is added.
FIG. 22 is a schematic plan view of a main part of a shelf member of an elevating device according to another sixth embodiment that adopts another guide structure for the shelf member.
[Explanation of symbols]
11 Insulation box (shelf frame), 12 upper shelf member, 12D 4th upper shelf member
13 Lower shelf member, 13B Second lower shelf member (separate lower shelf member)
13C Third lower shelf member (separate lower shelf member), 22 Front endless chain (endless cord)
23 Endless chain (endless cord), 31 Upper suspension
31D 4th upper suspension tool (lower suspension tool), 32 Upper engaging part, 33 Upper through-hole
34 shelf columns (connecting members), 36 lower through-hole, 35 lower engaging part

Claims

棚枠(11)の内部に配設されて上下に移動可能な上棚部材(12)および下棚部材(13)と、
前記棚枠(11)に配設されて上下方向に循環走行する複数の無端索体(22,23)と、
前記上棚部材(12)に設けられた上係合部(32)に開設されて、前記各無端索体(22,23)における上下方向に走行する一方の直線走行部が通過する上透孔(33)と、
前記下棚部材(13)に設けられた下係合部(35)に開設されて、前記各無端索体(22,23)における上下方向に走行する他方の直線走行部が通過する下透孔(36)と、
前記各無端索体(22,23)に配設され、該無端索体 (22,23) を一方の直線走行部が上方に移動するよう走行させた際に前記上棚部材(12)の上係合部(32)に下方から係合して、この係合状態で該無端索体(22,23)の正逆方向の走行により上棚部材(12)を上下移動させる上吊り具(31)と、
前記各無端索体(22,23)に配設され、該無端索体 (22,23) を他方の直線走行部が上方に移動するよう走行させた際に前記下棚部材(13)の下係合部(35)に下方から係合して、この係合状態で該無端索体(22,23)の正逆方向の走行により下棚部材(13)を上下移動させる下吊り具(31D)とを備え、
前記上吊り具 (31) および下吊り具 (31D) は、該上吊り具 (31) および下吊り具 (31D) が夫々上係合部 (32) および下係合部 (35) に係合していない状態において、該上吊り具 (31) および下吊り具 (31D) が対応する上係合部 (32) および下係合部 (35) の下方に位置するように前記無端索体 (22,23) に配設されている
ことを特徴とする棚部材の昇降装置。An upper shelf member (12) and a lower shelf member (13) which are arranged inside the shelf frame (11) and are movable up and down;
A plurality of endless cords (22, 23) arranged in the shelf frame (11) and circulating in the vertical direction;
Upper through-holes that are opened in the upper engaging portion (32) provided in the upper shelf member (12) and through which one straight traveling portion that travels in the vertical direction in each endless cord (22, 23) passes ( 33) and
A lower through hole that is opened in the lower engaging portion (35) provided in the lower shelf member (13) and through which the other straight traveling portion that travels in the vertical direction in each endless cord (22, 23) passes. (36)
Wherein disposed in each non Tansakutai (22,23), the upper engagement of the upper tray member in endless rope body (22, 23) is one of the straight running portion was run to move upwards (12) An upper suspension (31) that engages with the joint portion (32) from below and moves the upper shelf member (12) up and down by traveling in the forward and reverse directions of the endless cords (22, 23) in this engaged state ; ,
The bottom of each non Tansakutai disposed (22, 23), endless rigging the lower shelf member (22, 23) when the other of the straight running portion was run to move upwards (13) engages from below with the engaging portion (35), the engagement with the endless cable body (22, 23) in the forward or reverse direction traveling by Shitatana member (13) vertically moved to under hanger of (31D )
Wherein the hanging member (31) and the lower hangers (31D) is engaged with the upper hangers (31) and the lower hangers (31D) is respectively upper engaging portion (32) and the lower engaging portion (35) In the state where the upper end suspension (31) and the lower end suspension (31D) are positioned below the corresponding upper engagement portion (32) and lower engagement portion (35) , the endless cord ( lifting device of the shelf member, characterized in that are arranged in 22, 23).

前記各棚部材(12,13)の各側方において一対の無端索体(22,23)が並列に配設され、各側方において一方の無端索体(22)と他方の無端索体(23)とは逆向きに循環走行するよう構成される請求項１記載の棚部材の昇降装置。 A pair of endless cords (22, 23) are arranged in parallel on each side of each shelf member (12, 13), and one endless cord (22) and the other endless cord on each side ( 23. The lifting device for a shelf member according to claim 1, wherein the lifting device is configured to circulate in a direction opposite to 23).

前記棚枠(11)の内部には、前記上棚部材(12)が複数上下移動可能に配設されると共に、これら上部棚群の下位に前記下棚部材(13)が上下移動可能に配設され、この下棚部材(13)には別種の別下棚部材(13B,13C)が所定高さ寸法で離間可能な状態で連結部材(34)により相互に連結され、
前記各無端索体(22,23)には、前記上棚部材(12)の配設数に対応する数の前記上吊り具(31)が、無端索体(22,23)の走行方向に所定間隔離間して配設され、
前記各上棚部材(12)に開設された上透孔(33)は、上位のものと下位のものとで異なる形状または寸法に設定されると共に、前記上吊り具(31)は、対応する上棚部材(12)の上係合部(32)には係合し、かつその下位に位置する上棚部材(12)の上透孔(33)は通過可能に設定されている請求項１または２記載の棚部材の昇降装置。Inside the shelf frame (11), a plurality of the upper shelf members (12) are disposed so as to be vertically movable, and the lower shelf member (13) is disposed below these upper shelf groups so as to be vertically movable. In this lower shelf member (13), different types of lower shelf members (13B, 13C) are connected to each other by a connecting member (34) in a state where they can be separated with a predetermined height dimension,
Each of the endless cords (22, 23) has a number of the upper suspenders (31) corresponding to the number of the upper shelf members (12) arranged in the traveling direction of the endless cords (22, 23). Spaced apart,
The upper through-holes (33) opened in each upper shelf member (12) are set to have different shapes or sizes for the upper and lower ones, and the upper suspension (31) has a corresponding upper shelf. The upper through hole (33) engaging with the upper engagement portion (32) of the member (12) and positioned below the upper engagement portion (32) is set to be able to pass therethrough. Elevating device for shelf member.

前記上部棚群における最下位の上棚部材(12D)に対応する上吊り具(31D)が、前記下棚部材(13)を上下移動させる下吊り具を兼用する請求項３記載の棚部材の昇降装置。 The lifting / lowering of the shelf member according to claim 3, wherein the upper suspension tool (31D) corresponding to the lowermost upper shelf member (12D) in the upper shelf group also serves as a lower suspension tool for moving the lower shelf member (13) up and down. apparatus.