【０００１】
【発明の属する技術分野】
本願発明は、ご飯、或いは飲み物等を入れて持ち運びする断熱容器に関するものである。
【０００２】
【従来の技術】
図６は従来の断熱容器で、ボトルを示す。その構成を簡単に説明すると、該ボトルａは、主として暖かい飲み物を運ぶためのもので、図に示すように真空断熱二重壁構造体の容器本体ｂとこの容器本体ｂの上端開口部に設けられ、開閉弁を有する中蓋ｃと、この中蓋ｃを完全に覆いその外周上に取り付けられる外蓋ｄとで構成され、その容器本体ｂ内に温かい飲み物を入れて持ち運びするものである。このように断熱ボトルａは、持ち運び可能であることを大きな特徴の一つとしており、そのため容器本体ｂの外周上には、吊り紐を掛けるための肩部材ｅとともに、この肩部材ｅを取り付け固定するための肩リングｆが取り付けられている。
【０００３】
この肩部材ｅは、その上端部に容器本体ｂに形成される段部に係合可能な鍔部を有する中空円筒状の部材であるのに対し、肩リングｆは、その内周部に容器本体ｂの外周上に形成される螺子に螺合可能な螺子を有する中空円筒状の部材であり、その取り付けに際しては、まず容器本体ｂの上から肩部材ｅを嵌合し、その上端部に形成される鍔部を容器本体ｂに形成される段部に係合させ、次いで肩リングｆを容器本体ｂの上からその内周部に形成される螺子を容器本体ｂの外周上に形成される螺子に螺合させながら肩部材ｅの鍔部に当接するまで嵌合し、肩部材ｅを肩リングｆで取り付け固定してなる。
【０００４】
このように従来の肩部材ｅは、肩リングｆを取外すことにより着脱自在とされているため、容器本体ｂの丸洗いが可能であるという利点を有するものである。
【０００５】
しかしながら、従来の断熱ボトルａは、容器本体ｂに対し肩部材ｅを上部より取り付け、容器本体ｂで上部より締め付ける形態であったため、肩リングｆでの締め付けが緩く持ち運び時の振動で更に螺子嵌合が緩み、その嵌合が外れると容器本体ｂが脱落し、汚れたり損傷する問題を有していた。
【０００６】
また従来の断熱ボトルａは、容器本体ｂの外周上に設けられる螺子に肩リングｆの内周上に設けられる螺子を嵌合することにより肩部材ｅの取付を行っていたため、容器本体ｂに螺子を設ける必要があるところ、容器本体ｂを成形するためのプレス用型の形状が複雑になり、それだけコスト高を生じる問題を有していた。
【０００７】
更に、従来の断熱ボトルａは、肩部材ｅと肩リングｆとの間に回り止め手段としてのパッキンを取り付けてはいたが、樹脂同士の肩部材ｅと肩リングｆと間に介在するものであるためパッキンが滑り本来の回り止め効果が充分に達成できずに肩部材が緩む問題をも有していた。
【０００８】
【発明が解決しようとする課題】
本願発明は、上記問題点、即ち、肩部材及び肩リングの緩みを防止するとともに、たとえ肩部材がゆるんだとしても容器本体が脱落することがなく、且つ、その製作コストを低減してなる断熱容器を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記目的を達成するため、本願発明は以下の構成を採用する。
【００１０】
請求項１、２に係る発明では、断熱構造の容器本体と、該容器本体に対し着脱自在な肩部材と、前記容器本体と前記肩部材とを結合する肩リングと、前記容器本体の開口部を開閉する蓋部材とを有する断熱容器において、前記容器本体の外筒外面部に段部を設け、下方から前記肩部材を取り付け、上方から前記肩リングを取り付け、更に、前記段部は、その下方の直径よりも大きく形成され、前記肩部材の下端を該段部に引っかけて取り付ける構成。そしてこのような構成により、肩部材の取り付け取り外しが容易になるとともに、肩部材の取り付け後、たとえ肩部材と本体容器との螺子嵌合が外れたとしても本体容器が肩部材より下方に抜け落ちることはないので安全性が高まる。
【００１１】
請求項３に係る発明では、請求項１、２の構成に加え、前記肩部材と前記肩リングとは、外方に前記肩部材を内方に前記肩リングを配置し、両者の接触部を螺子嵌合する構成。そしてこのような構成により、肩部材と肩リングとを同時に一体的に結合することができるとともに、両者の結合後においては、両者は容器本体に強固に結合される。
【００１２】
請求項４に係る発明では、請求項１ないし３の構成に加え、前記容器本体と、前記肩部材及び／または前記肩リングの間に回り止め手段を設ける構成。
請求項５に係る発明では、請求項４の構成に加え、前記容器本体と前記肩部材の間に設ける回り止め手段は、前記容器本体の段部と該段部に引っかけて取り付けられる前記肩部材の下端との間に設けるパッキンである構成。
請求項６に係る発明では、請求項４の構成に加え、前記容器本体と前記肩部材の間に設ける回り止め手段は、前記容器本体の段部と該段部に引っかけて取り付けられる前記肩部材の下端との間のいずれかに設ける突起物である構成。
そしてこのような構成により、肩リングを肩部材に螺合する場合の肩部材の共回り、或いは両者の結合後、振動等による緩みが防止される。
【００１３】
請求項７に係る発明では、請求項１ないし６の構成に加え、前記肩リングの上端を前記容器本体上端より上方に位置させ、内容部材との対向部にリブを設ける構成。そしてこのような構成により、例えばランチジャーの場合においては肩リングの近傍に菜入れが配置されることになるが、閉蓋後の持ち運び時にその菜入れが内部でガタつくことはない。
【００１４】
請求項８に係る発明では、請求項１ないし７の構成に加え、前記蓋部材と前記肩部材との間に隙間を設ける構成。そしてこのような構成により、蓋部材を閉蓋する際、該蓋部材が肩部材に当たり肩部材が共回りすることが防止される。
【００１５】
【発明の実施の形態】
（第１の実施の形態）
図１に本願発明の第１の実施の形態の断熱容器を示す。本願発明は、ランチジャー及びボトル等断熱容器を対象にするものであるが、以下においてはランチジャーを対象に説明する。
【００１６】
断熱容器としてのランチジャー１は、真空断熱二重壁構造体からなる容器本体２及び該容器本体２の上端開口部に設けられる蓋部材３からその外郭が構成されるとともに、容器本体２内には、下方より汁を入れるための汁器４、ご飯等を入れるための飯器５及びおかずを入れるための菜入れ６が収納配置される。
【００１７】
真空断熱二重壁構造体からなる容器本体２について説明すると、容器本体２は、上方が開口する中空円筒状を呈し、その外周部は真空断熱部材を構成し、それぞれステンレス製の金属板よりなる内側筒状体２０、外側筒状体２１からなり、それら両部材２０、２１の上端部同士を溶着接合することにより図示のような内部空間２２を形成し、該内部空間２２を真空引きすることにより真空の閉断面構造体である真空二重壁構造体を形成している。
【００１８】
詳述すると、まず、一枚のステンレス製の金属板を絞り加工することにより、上方に開口部を有するやや小さ目の筒状体を形成し、これを内側筒状体２０とする。尚、この内側筒状体２０の底部全体には丸みが形成されるとともに、後記の汁器４の底面形状と相まって汁器４の収納を安定にする。次いで、同じく一枚のステンレス製の金属板を絞り加工することにより、上方に開口部を有するやや大き目の筒状体を形成し、これを外側筒状体２１とする。尚、この外側筒状体２１の底面部には真空引きするための穴２１ａを形成するとともに、閉断面構造体を形成した後にその閉鎖された内部空間２２内で発生するガスを吸着するためのゲッター２１ｂをその内面部に取り付けてなる。
【００１９】
そして外側筒状体２１内に小さ目の内側筒状体２０を挿入し、両者２０，２１間に内部空間２２を形成する形態で両者２０，２１の開口端部を溶着接合する。そして該ステンレス構造体を真空室に搬入し、外側筒状体２１に設けた穴２１ａから内部空間２２を真空引きするとともに、同じく真空室において加熱熔解してなる図示しない封止材によって穴２１ａに封をし、内部空間２２を真空にしてなる閉断面構造体を形成する。
このような真空二重壁構造体は、従来のガラス繊維や発泡スチロール等の断熱材に比べて遥かに断熱作用が高く、従来のものに比べて断熱性能が大きく向上する。尚、外側筒状体２１の外周部は直接ランチジャー１の外周面を形成することになるので、その面をステンレス製の地肌そのままの状態として使用することができ、更に、その外周面に人気キャラクターのデザインを付けることもできる。
【００２０】
また、該容器本体２は、内側筒状体２０と外側筒状体２１との開口端溶着接合部近傍の上壁部２ａと、真空引きするための穴２１ａ及びガスを吸着するためのゲッター２１ｂを有する底壁部２ｃと、上壁部２ａと底壁部２ｃとの間の胴部２ｂからなるとともに、それぞれの形状は、その底壁部２ｃをほぼ平坦面とし、胴部２ｂを上に広がる小さなテーパー状の円筒面とし、上壁部２ａをほぼ同径、或いは胴部２ｂと同様の上に広がる小さなテーパー状の円筒面としてなる。更に、上壁部２ａの径は、胴部２ｂの径より大きくされ、両者２ａ、２ｂ間には後記の肩部材８を止めるための段部２ｄが形成される。また、この実施の形態のものにおいては、該段部２ｄに適当数の突起部２ｅを不規則の間隔で設けており、この突起部２ｅに後記の肩部材に形成される凹嵌部８ｄを嵌着することにより肩部材の位置決めを行い、更に肩部材の共回り及び緩み回りを防止する。
【００２１】
次に容器本体２内に収納配置する各器について説明すると、前記汁器４は、樹脂製の汁器本体４０及び同じく樹脂製の蓋４１からなる。汁器本体４０は、その底部に丸みが形成されるとともに、その底部中央には凹部４２を有する断面ほぼＷ形状からなる容器であり、前記容器本体２の内側筒状体２０の底面形状に沿う形状にされ、該汁器４を容器本体２の底部に収納した時の安定感を高めている。また、その側壁部の上方外周上には蓋４１が螺合可能な本体螺子４３を有している。尚、容器本体２の底部に汁器４を安定的に収納するために、容器本体２の内側筒状体２０の底部の丸みである曲率半径を汁器４の底部の丸みである曲率半径より大きくしている。
【００２２】
前記蓋４１は、ほぼ水平な上面部４１ａ及び垂直な側面部４１ｂからなる断面ほぼコ字状を呈し、上面部４１ａのほぼ中央部には、ゴム弁４４を配置してなり、汁器本体４０内に入れた暖かい汁が冷め、その内部圧が下がるとそのゴム弁４４が内方に開き、外部から空気を導入することにより、内部が真空状態になり、蓋４１を開蓋できなくなる弊害を防止する。また、該上面部４１ａには、リング状の窪み４５が設けられるとともに、該窪み４５の内側に平面視円形等のつまみ４６が形成され、このつまみ４６を持って蓋４１の開閉が行われる。
更に前記側面部４１ｂの内面には、蓋螺子４７が形成されており、この蓋螺子４７を汁器本体４０の本体螺子４３に螺合することにより汁器本体４０を密封し、汁器本体４０内に入れた汁がこぼれないようにしている。
【００２３】
符号５は、いずれも樹脂製の飯器本体５０及び中蓋５１からなるご飯等が入れられる飯器であり、汁器４の上部に収納配置される。該飯器本体５０は、底面が平坦な円筒状容器であり、前記汁器４の平坦な上面部４１ａ上に安定した状態で載置される。またその上端部内面には中蓋５１との間でヘリコイド係合が行われるための３ないし４個の係合突起５０ａが等間隔に設けられている。
【００２４】
前記飯器本体５０の蓋としての中蓋５１は、樹脂製の中蓋本体５２と、その中蓋本体５２の上面に嵌合される樹脂製の上部板５３と、これら両部材５２，５３間に介在される断熱材５８からなる。即ち、中蓋本体５２を円筒状に形成するとともに、その内部に所定の厚さを有する円盤状の断熱材５８を配設し、その上部に上部板５３を嵌合する。その後前記中蓋本体５２と上部板５３との上端部間を熱溶着等によって両者を一体的に結合し、中蓋５１を形成する。
【００２５】
また、中蓋本体５２の下端近傍の外周上には、飯器本体５０の上端部内面に設けられる３ないし４個の係合突起５０ａとの間でヘリコイド係合が行われるための同数の係合溝５４が等間隔で形成されており、飯器本体５０内にご飯等を入れた後係合突起５０ａに係合溝５４を係合させることにより両者５０，５１を固定する。
【００２６】
また、中蓋５１を構成する上部板５３の上面にはリング状の窪み５６が設けられるとともに、該窪み５６の内側に平面視円形等のつまみ５７が形成され、中蓋５１の取り付け或いは取り外しは、このつまみ５７を持って行われる。
【００２７】
符号６はおかずを入れる菜入れであり、最上部に配置される。この菜入れ６は、樹脂製の菜入れ本体６０とやはり樹脂製の蓋６１からなり、該菜入れ本体６０はその底部が平坦面の断面コ字状の容器であり、前記中蓋５１上に安定的に載置される。また、その開口上端部には全周にわたり膨出部６２が形成されるとともに、前記蓋６１の外周内面部には溝部６３がやはり全周にわたり形成されており、膨出部６２に溝部６３を押圧して嵌合することにより、菜入れ本体６０に蓋６１を密封固定し、内容物がこぼれないようにしている。
【００２８】
そして図に示すように容器本体２内に下から順に汁器４、飯器５及び菜入れ６を収納配置した後、蓋部材３で容器本体２の開口部を上部から蓋をすることになる。該蓋部材３は、樹脂製で、且つコップ形状をしており、取外してコップとして利用することもできる。またその開口部近傍の内周面には、後記の肩部材８の上部外周面に設けられる肩部材外側螺子８ｃに螺合可能な蓋螺子３ａが形成されている。
【００２９】
符号８は、本願発明の特徴的部材の一つである肩部材である。該肩部材８は、樹脂製のリング形状を呈し、その外面中央部には、外方に張り出した鍔部８ｆが形成されるとともに、その上方部外周上には蓋部材３の開口部近傍の内周面に設けられる蓋螺子３ａに螺合する肩部材外側螺子８ｃが形成され、該肩部材外側螺子８ｃの内側にあたる上部内周面には、後記の肩リングに形成される螺子に螺合可能な肩部材内側螺子８ｂが形成される。
【００３０】
また該肩部材８の下端部にはその全周にわたり前記容器本体２の段部２ｄとの係合手段としての絞り部８ａが形成されているとともに、該絞り部８ａの内面であって、前記容器本体２の段部２ｄ上に不規則の間隔で設けられる適当数の突起部２ｅに嵌着可能な位置に同数の凹嵌部８ｄが形成され、この凹嵌部８ｄを段部２ｄの突起部２ｅに嵌着することにより肩部材８の位置決めを行い、更に肩部材８の共回り及び緩み回りを防止する。即ち、凹嵌部８ｄと突起部２ｅとで本願発明の特徴の一つである回り止め手段を構成している。尚、前記突起部２ｅと前記凹嵌部８ｄとはその取り付け位置が逆であっても良いとともに、係合手段としての絞り部８ａは、鋭く折れ曲がったものから滑らかなテーパー形状のものまでその角度はいろいろであっても良く、また特に容器本体全周にわたる必要はなく適当箇所に１つ以上ある係止爪のような係止手段であっても良く、要は肩部材８が容器本体２の段部２ｄに引っ掛かりそれ以上上部にいかない形状のものであればどのような形状であっても良い。
【００３１】
そしてこの肩部材８を取り付けるに際しては、該肩部材８を容器本体２の下側から挿入し、絞り部８ａの内面に形成した凹嵌部８ｄを段部２ｄの突起部２ｅに嵌着し肩部材の位置決めを行う。次いで内面に形成した肩部材内側螺子８ｂに後記の肩リングの螺子を螺合して両者を結合することになるが、その場合、肩部材８の共回りが防止されるため、肩リングを螺合することにより該肩部材８を容器本体２に対して確実に固定することができ、更に凹嵌部８ｄと突起部２ｅとの嵌合により肩部材８の緩みも防止できる。
【００３２】
符号９は、前記肩部材８の内方に位置する肩リングであり、樹脂製の円筒形状を呈し、その下部外周面には肩部材内側螺子８ｂと螺合可能な肩リング螺子９ａが設けられ、その内周面には下面に溝９ｃを設けたフランジ９ｂが形成され、更にその上方には円筒状のリブ９ｄが形成される。そして、前記該溝９ｃには、回り止め手段としてのリング状のパッキン１０ａが配置されるとともに、肩リング９を肩部材８に取り付けた時には、該パッキン１０ａは容器本体２の上部開口上端部に当接された状態で保持され、肩リング９と容器本体２との結合を強固に行い、肩リング９が振動等によって緩むことを防止する。また、前記リブ９ｄの高さは、容器本体２の最上部に配置される内容部材である菜入れ６の底面より高く形成されており、菜入れ６を収納するときのガイド、ならびに断熱容器を持ち運びする際のガタつきを防止している。
【００３３】
尚、前記リブ９ｄは特に円筒状である必要はなく、例えば数カ所のリブが立設するような形状であっても良い。またリブ９ｄの高さも、菜入れ６がガタつかず、且つ、菜入れ６の取り出し時に接触しないような高さであればよい。
【００３４】
肩リング９と肩部材８との取り付け等について説明すると、まず肩部材８を容器本体２の下方から挿入し、絞り部８ａの内面に形成した凹嵌部８ｄを段部２ｄの突起部２ｅに嵌着し肩部材の位置決めを行う。次いで肩リング９を容器本体２の上方から挿入し、肩リング９の肩リング螺子９ａを肩部材８の肩部材内側螺子８ｂに螺合し、両者をねじ締めする。この場合、肩部材８の凹嵌部８ｄは段部２ｄの突起部２ｅに嵌着しており、肩部材８は、肩リング９と共回りすることがないため、両者の結合は確実に行われる。両者が完全に結合された後には、肩部材８は上方に押し上げられる力を受け、肩部材８の凹嵌部８ｄは段部２ｄの突起部２ｅに押しつけられるように嵌着するとともに、肩リング９は下方に押し下げられる力を受け、パッキン１０ａは容器本体２の上部開口上端部に強く押し当てられ、結果的に肩リング９と肩部材８との結合が強まり、結合後に振動を受けても両者の結合が緩むことがなくなる。
【００３５】
肩リング９と肩部材８との結合後、容器本体２内に汁器４、飯器５及び菜入れ６を入れ、蓋部材３を被せることになる。この蓋部材３は、その内面に形成される蓋螺子３ａを前記肩部材外側螺子８ｃにねじ込むことによって行われる。そしてそのねじ込みは、蓋部材３の底面が肩部材８の鍔部８ｆ上面に当接するまでである。当接後は、蓋部材３を回しても肩部材８の凹嵌部８ｄが段部２ｄの突起部２ｅに嵌合しているため肩部材８が共回りをすることはなく、蓋部材３は肩部材８の当接位置でその閉蓋が完了することになる。
【００３６】
尚、両者の結合を解くための緩みトルクは、肩リング９と肩部材８とのものに比べて、肩部材８と蓋部材３とのものの方が小さくされることは勿論であるとともに、閉蓋完了時において、蓋部材３の天板内面が菜入れ６の上面と接触することはないが、強く押圧するのでなく弱い接触状態であれば寧ろ菜入れ６等の器の移動を防止することにもなり、菜入れ６等の器を大きく変形することがない接触状態であればそれでも良い。
【００３７】
（第２の実施の形態）
図１に示す第１の実施の形態のものは、肩部材８の凹嵌部８ｄを段部２ｄの突起部２ｅに嵌着するとともに、肩リング９に設けるパッキン１０ａを容器本体２の上部開口上端部に強く押し当てるものであり、前記したように肩部材８が共回りすることなく、且つ緩むこともないが、容器本体２に突起部２ｅを設けたり、肩リング９にパッキン１０ａを取り付けるためのフランジ９ｂを設ける等コスト高にもなった。この実施の形態のものは、前記突起部２ｅ及びフランジ９ｂを省略し、肩部材８の絞り部８ａと段部２ｄとの間に回り止め手段としてのパッキン１０ｂを設けるという簡単な構成により肩部材８の共回り及び緩みを防止したものである。
【００３８】
尚、以下に説明する各実施の形態のものは、蓋部材、肩部材ないし肩リングの一部を変形するものであるのでこの変形するものを中心に説明し、共通する容器本体及び容器本体内に収納配置する各器等の説明については省略する。
【００３９】
図２は、第２の実施の形態を示す。即ち、真空断熱二重壁構造体からなる容器本体２及び蓋部材３については第１の実施の形態と同じである。
【００４０】
肩部材８について改めて説明すると、該肩部材８は、樹脂製のリング形状を呈し、その外面中央部には、外方に張り出した鍔部８ｆが形成されるとともに、その上方部外周上には蓋部材３の開口部近傍の内周面に設けられる蓋螺子３ａに螺合する肩部材外側螺子８ｃが形成され、該肩部材外側螺子８ｃの内側にあたる上部内周面には、後記の肩リングに形成される螺子に螺合可能な肩部材内側螺子８ｂが形成される。
【００４１】
また該肩部材８の下端部にはその全周にわたり前記容器本体２の段部２ｄとの係合手段としての絞り部８ａが形成されている。そして該絞り部８ａの内面に凹嵌部８ｄを形成するとともに、該凹嵌部８ｄ内には回り防止用のリング状のパッキン１０ｂを配設してなる。尚、前記凹嵌部８ｄを容器本体２の段部２ｄに設け、そこにパッキン１０ｂを配設するようにしても良いとともに、係合手段としての絞り部８ａは、鋭く折れ曲がったものから滑らかなテーパー形状のものまでその角度はいろいろであっても良く、また特に容器本体全周にわたる必要はなく適当箇所に１つ以上ある係止爪のような係止手段であっても良く、要は肩部材８が容器本体２の段部２ｄに引っ掛かりそれ以上上部にいかない形状のものであればどのような形状であっても良い。
【００４２】
そしてこの肩部材８を取り付けるに際しては、該肩部材８を容器本体２の下側から挿入し、絞り部８ａの内面の凹嵌部８ｄに配置したパッキン１０ｂを容器本体２の段部２ｄ当接させる。次いで内面に形成した肩部材内側螺子８ｂに後記の肩リングの螺子を螺合して両者を結合することになるが、その場合、パッキン１０ｂと容器本体２の段部２ｄ壁面との間の摩擦抵抗が大きくなるため肩部材８の共回りが防止され、肩リングを螺合することにより該肩部材８を容器本体２に対して確実に固定することができ、更に肩部材８の緩みも防止できる。
【００４３】
符号９は、前記肩部材８の内方に位置する肩リングであり、樹脂製の円筒形状を呈し、その下部外周面には肩部材内側螺子８ｂと螺合可能な肩リング螺子９ａが設けられ、その上方には円筒状のリブ９ｄが形成される。該リブ９ｄの高さは、容器本体２の最上部に配置される内容部材である菜入れ６の底面より高く形成されており、菜入れ６を収納するときのガイド、ならびに断熱容器を持ち運びする際の菜入れ６のガタつきを防止する。尚、前記リブ９ｄは特に円筒状である必要はなく、例えば数カ所のリブが立設するような形状であっても良い。
【００４４】
肩リング９と肩部材８との取り付け等について説明すると、まず肩部材８を容器本体２の下方から挿入し、絞り部８ａ内面の凹嵌部８ｄ内に配置したパッキン１０ｂを容器本体２の段部２ｄに当接させる。次いで肩リング９を容器本体２の上方から挿入し、肩リング９の肩リング螺子９ａを肩部材８の肩部材内側螺子８ｂに螺合し、両者をねじ締めする。この場合、肩部材８の凹嵌部８ｄ内に配置したパッキン１０ｂは容器本体２の段部２ｄに強く当接しており、肩部材８は、肩リング９と共回りすることがないため、両者の結合は確実に行われる。更に、結合後に振動を受けても両者の結合が緩むことはなくなる。
【００４５】
肩リング９と肩部材８との結合後、容器本体２内に汁器４、飯器５及び菜入れ６を入れ、蓋部材３を被せることになる。この蓋部材３は、その内面に形成される蓋螺子３ａを前記肩部材外側螺子８ｃにねじ込むことによって行われる。そしてそのねじ込みは、蓋部材３の下端面が肩部材８の鍔部８ｆ上面に当接するまでである。当接後は、蓋部材３を回しても肩部材８の凹嵌部８ｄに配置したパッキン１０ｂは容器本体２の段部２ｄに強く当接しているため肩部材８が共回りをすることはなく、蓋部材３は肩部材８の当接位置でその閉蓋が完了することになる。
【００４６】
尚、両者の結合を解くための緩みトルクは、肩リング９と肩部材８とのものに比べて、肩部材８と蓋部材３とのものの方が小さくされることは勿論であるとともに、閉蓋完了時において、蓋部材３の天板内面が菜入れ６の上面と接触することはないが、強く押圧するのでなく弱い接触状態であれば寧ろ菜入れ６等の器の移動を防止することにもなり、菜入れ６等の器を大きく変形することがない接触状態であればそれでも良い。
【００４７】
（第３の実施の形態）
図３は、蓋部材の天板内面にリブを設け、このリブを菜入れの蓋上面に当接し、肩部材の鍔部上面と蓋部材下端面との間に隙間を設けて肩部材の共回りを防止した例を示す。尚、この実施の形態のものは、蓋部材の天板内面に回り止め手段としてのリブを設けた以外は、第１の実施の形態のものと全て同じであるのでそれらについては第１の実施の形態のものを参照するものとしてその記載を省略し、関係箇所の説明のみにする。
【００４８】
即ち、蓋部材３の開口部近傍の内周面には、肩部材外側螺子８ｃに螺合可能な蓋螺子３ａが形成されるとともに、その水平部を構成する天板内面には、円筒状のリブ３ｂが垂下されている。このリブ３ｂは、蓋部材３の閉蓋時に蓋部材３の下端面と肩部材８の鍔部８ｆ上面とが当接する前に、その先端が最上段の内容部材、即ち菜入れ６の上面に当接するものであれば適当数の棒状体等どのような形状のものでも良い。
【００４９】
そして第１の実施の形態で説明した手順で肩リング９と肩部材８とを結合し、容器本体２内に汁器４、飯器５及び菜入れ６を入れ、蓋部材３を被せることになる。この蓋部材３は、その内面に形成される蓋螺子３ａを前記肩部材外側螺子８ｃにねじ込むことによって行われ、そのねじ込みは、蓋部材３の下端面が肩部材８の鍔部８ｆ上面に当接するまでであるがこの実施の形態のものでは、蓋部材３の下端面が肩部材８の鍔部８ｆ上面に当接する前にリブ３ｂが菜入れ６の上面に当接することになる。そのため蓋部材３をそれ以上ねじ込むことができず、蓋部材３の下端面と肩部材８の鍔部８ｆ上面との間に隙間３ｃが形成されることになる。そしてこの隙間３ｃが形成されるということは、蓋部材３の下端面と肩部材８の鍔部８ｆ上面とが当接することがないため、蓋部材３の回動により肩部材８が共回りをして緩む弊害が防止されることになる。
（第４の実施の形態）
図４は、蓋部材の閉蓋時に肩部材８の鍔部８ｆ上面と当接可能な蓋部材３の下端面、或いは肩部材８の鍔部８ｆ上面であっても良いが回り止め手段としての複数個のリブを設け、このリブを肩部材８の鍔部８ｆ上面に当接し、鍔部８ｆ上面と蓋部材下端面との接触面積を低減することにより肩部材の共回りを防止した例を示し、図５はその拡大断面図を示す。尚、この実施の形態のものも、蓋部材の下端面にリブを設けた以外は、第１の実施の形態のものと全て同じであるのでそれらについては第１の実施の形態のものを参照するものとしてその記載を省略し、関係箇所の説明のみにする。
【００５０】
即ち、蓋部材３の開口部近傍の内周面には、肩部材外側螺子８ｃに螺合可能な蓋螺子３ａが形成されるとともに、肩部材８の鍔部８ｆ上面と当接可能な蓋部材３の下端面には、複数個のリブ３ｂが等間隔に垂下されている。このリブ３ｂは、蓋部材３の閉蓋時に肩部材８の鍔部８ｆ上面と当接するものであり、特にその形状はどのようなものでも良いが、当接面積はできるだけ少ないものの方が良く、またリブ３ｂは蓋部材の下端面に設けると説明したが、肩部材８の鍔部８ｆ上面に設けても良い。
【００５１】
そして、肩部材８を肩リング９により容器本体２に強固に取り付け、容器本体２内に汁器４、飯器５及び菜入れ６を入れた後、蓋部材３の内面に形成される蓋螺子３ａを肩部材外側螺子８ｃにねじ込むことによって蓋をすることになるが、肩部材８の鍔部８ｆ上面と当接可能な蓋部材３の下端面には前記したように複数個のリブ３ｂが垂下されており、蓋部材３をねじ込んでいくと、該リブ３ｂの先端が肩部材８の鍔部８ｆ上面に当接する。このようなリブ３ｂと肩部材８の鍔部８ｆ上面との接触面積は、従来のものに比べ小さなものにすることができ、それだけ両者の接触摩擦が低減するため、蓋部材３の回動により肩部材８が共回りをして緩む弊害が低減されることになる。
尚、その他の実施の形態として肩部材８と肩リング９との間のねじ方向と、蓋部材３と肩部材８との間のねじ方向を逆にすることによっても回り止めを達成することもできる。
【００５２】
本願発明は、上記各実施の形態の構成に限定されるものではなく、発明の要旨を逸脱しない範囲において適宜設計変更可能であることは勿論である。
【００５３】
【発明の効果】
請求項１、２に係る発明では、容器本体の外筒外面部に段部を設け、下方から肩部材を取り付け、上方から肩リングを取り付けるとともに、前記段部は、その下方の直径よりも大きく形成され、前記肩部材の下端を該段部に引っかけて取り付けることにより、肩部材の取り付け取り外しを容易に行うことができるとともに、肩部材の取り付け後、たとえ肩部材と容器本体との螺子嵌合が外れたとしても容器本体が肩部材より下方に抜け落ちることはないので安全性を高めることができる。また、容器本体に螺子を設ける必要がないため容器本体を成形するためのプレス用型の形状を簡素化でき、それだけコストを低減することができるとともに、肩部材と蓋部材との嵌合後においては両者間の隙間をなくすることができるため見た目に綺麗にすることができる。更に、容器本体の段部を除いた箇所の塗装においては、該段部を利用してマスキングすることができるため、塗装作業を簡略化することができる。
【００５４】
請求項３に係る発明では、肩部材と前記肩リングとは、外方に前記肩部材を内方に前記肩リングを配置し、両者の接触部を螺子嵌合することにより、請求項１、２に係る発明の効果に加え、肩部材と肩リングとを同時に一体的に結合することができるとともに、両者を容器本体に強固に結合することができる。
【００５５】
請求項４ないし６に係る発明では、容器本体と、前記肩部材及び／または前記肩リングの間に回り止め手段を設けることにより、請求項１ないし３に係る発明の効果に加え、肩リングを肩部材に螺合する場合の肩部材の共回りを防止することができるとともに、両者の結合後における振動等による緩みをも防止することができる。
【００５６】
請求項７に係る発明では、肩リングの上端を前記容器本体上端より上方に位置させ、内容部材との対向部にリブを設けることにより、請求項１ないし４に係る発明の効果に加え、例えばランチジャーの場合においては肩リングの近傍に菜入れが配置されることになるため、閉蓋後の持ち運び時にその菜入れ等の内容部材が内部でガタつくことを防止することができる。
【００５７】
請求項８に係る発明では、蓋部材と肩部材との間に隙間を設けることにより、請求項１ないし５に係る発明の効果に加え、蓋部材を閉蓋する際、該蓋部材が肩部材に当たり肩部材が共回りして肩部材と肩リングとの螺合が緩むことを確実に防止することができる。
【図面の簡単な説明】
【図１】本願発明の携帯用断熱容器の第１の実施の形態を示す断面図。
【図２】本願発明の携帯用断熱容器の第２の実施の形態を示す断面図。
【図３】本願発明の携帯用断熱容器の第３の実施の形態を示す断面図。
【図４】本願発明の携帯用断熱容器の第４の実施の形態を示す断面図。
【図５】図４の要部拡大断面図。
【図６】従来の携帯用断熱ボトルの断面図。
【符号の説明】
１…ランチジャー ２…容器本体 ３…蓋部材
４…汁器 ５…飯器 ８…肩部材
２０…内側筒状体 ２１…外側筒状体 ２２…内部空間
２ａ…上壁部 ２ｂ…胴部 ２ｃ…底壁部
２ｄ…段部 ２ｅ…突起部 ３ｂ…リブ
３ｃ…隙間 ８ａ…絞り部 ８ｃ…肩部材外側螺子
８ｄ…凹嵌部 ９…肩リング ９ａ…肩リング螺子
９ｂ…フランジ ９ｃ…溝 ９ｄ…リブ
１０…パッキン ４０…汁器本体 ４４…ゴム弁
５０…飯器本体 ５２…中蓋本体 ５３…上部板
５４…係合溝 ５５…鍔部 ５８…断熱材
６２…膨出部 ６３…溝部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an insulated container for carrying rice or a drink.
[0002]
[Prior art]
FIG. 6 shows a conventional insulated container and a bottle. Briefly explaining the configuration, the bottle a is mainly for carrying a warm drink, and is provided in a container body b of a vacuum heat insulating double wall structure and an upper end opening of the container body b as shown in the figure. And an inner lid c having an on-off valve and an outer lid d that completely covers the inner lid c and is attached on the outer periphery thereof, and carries a hot drink in the container body b. Thus, the heat insulating bottle a is one of the major features that it can be carried. Therefore, on the outer periphery of the container body b, the shoulder member e is attached and fixed together with a shoulder member e for hanging a hanging strap. A shoulder ring f is attached.
[0003]
The shoulder member e is a hollow cylindrical member having a collar portion engageable with a step formed on the container main body b at the upper end portion thereof, whereas the shoulder ring f has a container on the inner peripheral portion thereof. It is a hollow cylindrical member having a screw that can be screwed into a screw formed on the outer periphery of the main body b, and when attaching, a shoulder member e is first fitted from above the container main body b, and the upper end thereof is The collar portion to be formed is engaged with the step portion formed on the container body b, and then the shoulder ring f is formed on the outer periphery of the container body b from the top of the container body b to the inner periphery thereof. The shoulder member e is fitted and fixed with a shoulder ring f until it is brought into contact with the buttocks of the shoulder member e.
[0004]
As described above, the conventional shoulder member e is detachable by removing the shoulder ring f, and thus has an advantage that the container body b can be washed.
[0005]
However, the conventional heat insulating bottle a has a configuration in which the shoulder member e is attached to the container body b from the upper part and is tightened from the upper part by the container body b, so that the shoulder ring f is loosely tightened and further screwed by vibration during carrying. When the mating is loosened and the fitting is released, the container main body b falls off, and there is a problem that it becomes dirty or damaged.
[0006]
Moreover, since the conventional heat insulation bottle a has attached the shoulder member e by fitting the screw provided on the inner periphery of the shoulder ring f to the screw provided on the outer periphery of the container main body b, Where it is necessary to provide a screw, the shape of the press mold for forming the container body b is complicated, and there is a problem that the cost increases accordingly.
[0007]
Further, the conventional heat insulating bottle a has a packing as a rotation preventing means between the shoulder member e and the shoulder ring f, but is interposed between the shoulder member e and the shoulder ring f between the resins. For this reason, there is a problem that the packing slips and the shoulder member loosens because the original anti-rotation effect cannot be achieved sufficiently.
[0008]
[Problems to be solved by the invention]
The invention of the present application prevents the above-mentioned problems, i.e., the looseness of the shoulder member and the shoulder ring, prevents the container body from dropping even if the shoulder member is loosened, and reduces the production cost. The purpose is to provide a container.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention adopts the following configuration.
[0010]
In the invention according to claims 1 and 2, the container body having a heat insulating structure, a shoulder member detachably attached to the container body, a shoulder ring for coupling the container body and the shoulder member, and an opening of the container body In the heat insulating container having a lid member that opens and closes, a step is provided on the outer surface of the outer cylinder of the container body, the shoulder member is attached from below, the shoulder ring is attached from above, and the step is A configuration in which the lower end of the shoulder member is attached to the step portion by being formed larger than a lower diameter. With such a configuration, the shoulder member can be easily attached and detached, and after the shoulder member is attached, even if the screw engagement between the shoulder member and the main body container is released, the main body container falls below the shoulder member. Because there is no, it increases safety.
[0011]
According to a third aspect of the present invention, in addition to the configuration of the first and second aspects, the shoulder member and the shoulder ring are arranged such that the shoulder member is disposed outward and the shoulder ring is disposed inside, A screw-fitting configuration. With such a configuration, the shoulder member and the shoulder ring can be integrally coupled at the same time, and both are firmly coupled to the container body after the coupling.
[0012]
In the invention according to claim 4, in addition to the structure of claims 1 to 3, a structure in which a rotation preventing means is provided between the container body and the shoulder member and / or the shoulder ring.
In the invention according to claim 5, in addition to the configuration of claim 4, the rotation preventing means provided between the container main body and the shoulder member includes the step portion of the container main body and the shoulder member attached by being hooked to the step portion. The structure which is packing provided between the lower ends of.
In the invention according to claim 6, in addition to the structure of claim 4, the rotation preventing means provided between the container main body and the shoulder member includes the step portion of the container main body and the shoulder member attached by being hooked to the step portion. The structure which is a protrusion provided in either between the lower ends of.
With such a configuration, loosening due to vibration or the like is prevented after the shoulder member co-rotates when the shoulder ring is screwed to the shoulder member or after the both are coupled.
[0013]
In addition to the structure of Claims 1 thru | or 6, in the invention which concerns on Claim 7, the upper end of the said shoulder ring is located above the said container main body upper end, and the structure which provides a rib in the opposing part with a content member. With such a configuration, for example, in the case of a lunch jar, the vegetable case is arranged in the vicinity of the shoulder ring, but the vegetable case is not rattled inside when being carried after the lid is closed.
[0014]
In the invention which concerns on Claim 8, in addition to the structure of Claims 1 thru | or 7, the structure which provides a clearance gap between the said cover member and the said shoulder member. With such a configuration, when the lid member is closed, it is prevented that the lid member hits the shoulder member and the shoulder member rotates together.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
FIG. 1 shows a heat insulating container according to a first embodiment of the present invention. The present invention is intended for a heat insulating container such as a lunch jar and a bottle, but in the following, the description will be made for a lunch jar.
[0016]
The launcher 1 as a heat insulating container includes a container main body 2 formed of a vacuum heat insulating double wall structure and a lid member 3 provided at an upper end opening of the container main body 2, and an outer shell thereof is formed in the container main body 2. Is arranged so that a soup bowl 4 for putting juice from below, a rice bowl 5 for putting rice or the like, and a vegetable bowl 6 for putting side dishes.
[0017]
The container main body 2 composed of a vacuum heat insulating double wall structure will be described. The container main body 2 has a hollow cylindrical shape that opens upward, and its outer peripheral portion constitutes a vacuum heat insulating member, each made of a stainless steel metal plate. The inner cylindrical body 20 and the outer cylindrical body 21 are formed, and the inner spaces 22 as shown in the figure are formed by welding and joining the upper ends of both the members 20 and 21, and the inner space 22 is evacuated. Thus, a vacuum double wall structure which is a vacuum closed section structure is formed.
[0018]
More specifically, first, a single stainless steel metal plate is drawn to form a slightly smaller cylindrical body having an opening on the upper side, which is referred to as an inner cylindrical body 20. In addition, while rounding is formed in the whole bottom part of this inner side cylindrical body 20, combined with the bottom face shape of the soup device 4 mentioned later, accommodation of the soup device 4 is stabilized. Next, similarly, a single stainless steel metal plate is drawn to form a slightly larger cylindrical body having an opening on the upper side, which is referred to as an outer cylindrical body 21. A hole 21a for evacuating is formed in the bottom surface portion of the outer cylindrical body 21, and a gas generated in the closed internal space 22 is adsorbed after the closed section structure is formed. A getter 21b is attached to the inner surface.
[0019]
Then, a small inner cylindrical body 20 is inserted into the outer cylindrical body 21, and the open end portions of both 20 and 21 are welded and joined together in a form in which an internal space 22 is formed between the both 20 and 21. Then, the stainless steel structure is carried into the vacuum chamber, the internal space 22 is evacuated from the hole 21a provided in the outer cylindrical body 21, and the hole 21a is sealed by a sealing material (not shown) which is also heated and melted in the vacuum chamber. A closed cross-section structure is formed by sealing and evacuating the internal space 22.
Such a vacuum double-wall structure has a much higher heat insulating effect than conventional heat insulating materials such as glass fiber and polystyrene, and greatly improves the heat insulating performance as compared with the conventional one. In addition, since the outer peripheral part of the outer cylindrical body 21 directly forms the outer peripheral surface of the launcher 1, the surface can be used as it is as a stainless steel background, and it is also popular for its outer peripheral surface. You can also attach a character design.
[0020]
The container body 2 includes an upper wall portion 2a in the vicinity of the open end welded joint between the inner cylindrical body 20 and the outer cylindrical body 21, a hole 21a for evacuating, and a getter 21b for adsorbing gas. A bottom wall portion 2c having a bottom wall portion 2b between the top wall portion 2a and the bottom wall portion 2c. Each of the shapes is such that the bottom wall portion 2c is substantially flat and the body portion 2b is on the top. A small tapered cylindrical surface is formed, and the upper wall portion 2a is formed as a small tapered cylindrical surface having substantially the same diameter or extending upward as in the body portion 2b. Furthermore, the diameter of the upper wall portion 2a is made larger than the diameter of the body portion 2b, and a step portion 2d for stopping a shoulder member 8 described later is formed between the two walls 2a and 2b. In this embodiment, an appropriate number of protrusions 2e are provided at irregular intervals on the step 2d, and a concave fitting 8d formed on a shoulder member described later is provided on the protrusion 2e. The shoulder member is positioned by fitting, and the shoulder member is prevented from rotating and loosening.
[0021]
Next, each container housed and arranged in the container body 2 will be described. The juice container 4 includes a resin juice body 40 and a resin lid 41. The soup bowl main body 40 is a container having a substantially W-shaped cross section having a recess 42 at the center of the bottom thereof and having a round shape at the bottom thereof, and follows the bottom shape of the inner cylindrical body 20 of the container main body 2. It has a shape and enhances a sense of stability when the juicer 4 is stored in the bottom of the container body 2. A main body screw 43 to which the lid 41 can be screwed is provided on the upper outer periphery of the side wall portion. In order to stably store the juicer 4 at the bottom of the container body 2, the radius of curvature of the bottom of the inner cylindrical body 20 of the container body 2 is set to be larger than the radius of curvature of the bottom of the juicer 4. It is getting bigger.
[0022]
The lid 41 has a substantially U-shaped cross section composed of a substantially horizontal upper surface portion 41a and a vertical side surface portion 41b. A rubber valve 44 is disposed at a substantially central portion of the upper surface portion 41a. When the warm soup inside cools and the internal pressure drops, the rubber valve 44 opens inward, and air is introduced from the outside, so that the inside becomes a vacuum state and the lid 41 cannot be opened. To prevent. The upper surface portion 41 a is provided with a ring-shaped recess 45, and a knob 46 having a circular shape in plan view is formed inside the recess 45, and the lid 41 is opened and closed with the knob 46.
Further, a lid screw 47 is formed on the inner surface of the side surface portion 41b. By screwing the lid screw 47 to the main body screw 43 of the soup device body 40, the soup device body 40 is sealed, and the soup device body 40 is sealed. The juice that is inside is kept from spilling.
[0023]
Reference numeral 5 denotes a rice cooker in which rice or the like made of a resin rice cooker body 50 and an inner lid 51 is placed. The rice cooker body 50 is a cylindrical container having a flat bottom surface, and is placed on the flat upper surface portion 41a of the soup bowl 4 in a stable state. In addition, on the inner surface of the upper end portion, three to four engagement protrusions 50a are provided at equal intervals for helicoid engagement with the inner lid 51.
[0024]
An inner lid 51 as a lid of the rice cooker body 50 includes a resin inner lid body 52, a resin upper plate 53 fitted to the upper surface of the inner lid body 52, and a space between these members 52, 53. It consists of the heat insulating material 58 interposed by. That is, the inner lid main body 52 is formed in a cylindrical shape, a disk-shaped heat insulating material 58 having a predetermined thickness is disposed therein, and the upper plate 53 is fitted on the upper portion thereof. Thereafter, the upper ends of the inner lid main body 52 and the upper plate 53 are joined together by heat welding or the like to form the inner lid 51.
[0025]
Further, on the outer periphery in the vicinity of the lower end of the inner lid main body 52, the same number of engagements for helicoid engagement with three to four engagement protrusions 50a provided on the inner surface of the upper end of the rice cooker main body 50 are performed. The joint grooves 54 are formed at equal intervals, and after putting rice or the like into the rice cooker body 50, the engagement grooves 54 are engaged with the engagement protrusions 50a to fix the both 50 and 51.
[0026]
In addition, a ring-shaped depression 56 is provided on the upper surface of the upper plate 53 constituting the inner lid 51, and a knob 57 such as a circular shape in plan view is formed inside the depression 56. This is done with the knob 57.
[0027]
Reference numeral 6 denotes a vegetable dish containing a side dish, which is arranged at the top. This vegetable case 6 includes a resin case main body 60 and a resin lid 61, and the vegetable case main body 60 is a container having a U-shaped cross section with a flat bottom surface. Placed stably. In addition, a bulging portion 62 is formed over the entire periphery at the upper end of the opening, and a groove portion 63 is also formed over the entire outer peripheral inner surface portion of the lid 61, and the groove portion 63 is formed in the bulging portion 62. By pressing and fitting, the lid 61 is hermetically fixed to the vegetable case main body 60 so that the contents are not spilled.
[0028]
Then, as shown in the figure, the soup bowl 4, the rice cooker 5 and the vegetable tray 6 are accommodated in the container body 2 in order from the bottom, and then the opening of the container body 2 is covered with the lid member 3 from above. . The lid member 3 is made of resin and has a cup shape, and can be removed and used as a cup. A lid screw 3a that can be screwed into a shoulder member outer screw 8c provided on the upper outer peripheral surface of the shoulder member 8 described later is formed on the inner peripheral surface in the vicinity of the opening.
[0029]
Reference numeral 8 denotes a shoulder member which is one of characteristic members of the present invention. The shoulder member 8 has a resin ring shape, and a flange portion 8f projecting outward is formed in the center portion of the outer surface, and on the outer periphery of the upper portion, the vicinity of the opening portion of the lid member 3 is formed. A shoulder member outer screw 8c that is screwed to a lid screw 3a provided on the inner peripheral surface is formed, and an upper inner peripheral surface that is inside the shoulder member outer screw 8c is screwed to a screw that is formed on a shoulder ring described later. A possible shoulder member inner screw 8b is formed.
[0030]
Further, the lower end portion of the shoulder member 8 is formed with a throttle portion 8a as an engaging means with the step portion 2d of the container body 2 over the entire circumference thereof, and the inner surface of the throttle portion 8a, The same number of recessed fitting portions 8d are formed at positions that can be fitted onto an appropriate number of protruding portions 2e provided at irregular intervals on the stepped portion 2d of the container body 2, and the recessed fitting portions 8d are formed as protrusions of the stepped portion 2d. The shoulder member 8 is positioned by being fitted to the portion 2e, and the shoulder member 8 is prevented from rotating and loosening. That is, the concave fitting portion 8d and the protruding portion 2e constitute a detent means that is one of the features of the present invention. The protrusion 2e and the recessed fitting portion 8d may be mounted at opposite positions, and the throttle portion 8a as the engaging means has an angle from a sharply bent shape to a smooth tapered shape. May be various, and it is not particularly necessary to cover the entire circumference of the container body, and may be a locking means such as one or more locking claws at appropriate locations. Any shape may be used as long as it is caught by the step 2d and does not go further upward.
[0031]
When the shoulder member 8 is attached, the shoulder member 8 is inserted from the lower side of the container body 2, and the recessed fitting portion 8d formed on the inner surface of the throttle portion 8a is fitted to the protruding portion 2e of the step portion 2d. Position the member. Next, the shoulder ring screw 8b formed on the inner surface is screwed with the shoulder ring screw described later to couple them together. In this case, since the shoulder member 8 is prevented from rotating together, the shoulder ring is screwed. By joining, the shoulder member 8 can be securely fixed to the container main body 2, and further, the looseness of the shoulder member 8 can be prevented by fitting the concave fitting portion 8d and the protruding portion 2e.
[0032]
Reference numeral 9 denotes a shoulder ring positioned inward of the shoulder member 8 and has a cylindrical shape made of resin, and a shoulder ring screw 9a capable of being screwed to the shoulder member inner screw 8b is provided on the lower outer peripheral surface thereof. A flange 9b having a groove 9c on the lower surface is formed on the inner peripheral surface, and a cylindrical rib 9d is formed on the flange 9b. The groove 9c is provided with a ring-shaped packing 10a as an anti-rotation means. When the shoulder ring 9 is attached to the shoulder member 8, the packing 10a is formed at the upper end of the upper opening of the container body 2. The shoulder ring 9 and the container body 2 are firmly connected to each other, and the shoulder ring 9 is prevented from loosening due to vibration or the like. Moreover, the height of the rib 9d is formed higher than the bottom surface of the vegetable case 6 which is a content member arranged at the uppermost part of the container body 2, and the guide for housing the vegetable case 6 and the insulated container are provided. Prevents rattling when carrying around.
[0033]
The rib 9d is not particularly required to be cylindrical, and may have a shape in which, for example, several ribs are erected. The height of the rib 9d may be such a height that the vegetable holder 6 does not rattle and does not come into contact when the vegetable holder 6 is taken out.
[0034]
The attachment of the shoulder ring 9 and the shoulder member 8 will be described. First, the shoulder member 8 is inserted from below the container body 2, and the recessed fitting portion 8d formed on the inner surface of the throttle portion 8a is formed on the protruding portion 2e of the step portion 2d. Fit and position shoulder member. Next, the shoulder ring 9 is inserted from above the container body 2, the shoulder ring screw 9a of the shoulder ring 9 is screwed into the shoulder member inner screw 8b of the shoulder member 8, and both are tightened. In this case, the recessed fitting portion 8d of the shoulder member 8 is fitted to the projection 2e of the stepped portion 2d, and the shoulder member 8 does not rotate with the shoulder ring 9, so that the coupling between the two is ensured. Is called. After the two are completely coupled, the shoulder member 8 receives a force that pushes upward, and the concave fitting portion 8d of the shoulder member 8 is fitted so as to be pressed against the projection 2e of the step portion 2d, and the shoulder ring 9 receives a force to be pushed down, and the packing 10a is strongly pressed against the upper opening upper end portion of the container body 2. As a result, the coupling between the shoulder ring 9 and the shoulder member 8 is strengthened, and even after receiving the vibration, The bond between the two is not loosened.
[0035]
After combining the shoulder ring 9 and the shoulder member 8, the soup bowl 4, the rice bowl 5, and the vegetable bowl 6 are placed in the container body 2 and the lid member 3 is covered. The lid member 3 is formed by screwing a lid screw 3a formed on the inner surface thereof into the shoulder member outer side screw 8c. The screwing is performed until the bottom surface of the lid member 3 comes into contact with the upper surface of the flange portion 8f of the shoulder member 8. After the contact, even if the lid member 3 is rotated, the recessed member 8d of the shoulder member 8 is fitted to the protrusion 2e of the stepped portion 2d, so that the shoulder member 8 does not rotate together. The closing of the shoulder member 8 is completed at the contact position of the shoulder member 8.
[0036]
The loosening torque for releasing the coupling between the shoulder member 8 and the lid member 3 is naturally smaller than that of the shoulder ring 9 and the shoulder member 8, and the closing torque is closed. When the lid is completed, the inner surface of the top plate of the lid member 3 does not come into contact with the upper surface of the vegetable case 6, but if it is in a weak contact state rather than being pressed strongly, the movement of the vegetable case 6 or the like is prevented. However, it may be in a contact state that does not greatly deform the container such as the vegetable tray 6.
[0037]
(Second Embodiment)
In the first embodiment shown in FIG. 1, the concave fitting portion 8d of the shoulder member 8 is fitted to the protruding portion 2e of the step portion 2d, and the packing 10a provided on the shoulder ring 9 is provided in the upper opening of the container body 2. The shoulder member 8 does not rotate together and does not loosen as described above, but the protrusion 2e is provided on the container body 2 or the packing 10a is attached to the shoulder ring 9. For example, a high flange 9b is required. In this embodiment, the projecting portion 2e and the flange 9b are omitted, and the shoulder member has a simple structure in which a packing 10b is provided as a detent means between the throttle portion 8a and the step portion 2d of the shoulder member 8. This prevents the co-rotation and loosening of 8.
[0038]
In addition, since the thing of each embodiment demonstrated below deform | transforms a part of a lid member, a shoulder member, or a shoulder ring, it demonstrates centering on this deformed thing, and it is common in a container main body and a container main body. A description of each container and the like housed in the container will be omitted.
[0039]
FIG. 2 shows a second embodiment. That is, the container main body 2 and the lid member 3 made of the vacuum heat insulating double wall structure are the same as those in the first embodiment.
[0040]
The shoulder member 8 will be described again. The shoulder member 8 has a resin ring shape, and a flange portion 8f projecting outward is formed at the center of the outer surface, and on the outer periphery of the upper portion thereof. A shoulder member outer screw 8c is formed to be screwed into a lid screw 3a provided on the inner peripheral surface in the vicinity of the opening of the lid member 3. A shoulder member inner screw 8b is formed which can be screwed into the screw formed in the above.
[0041]
Further, a narrowed portion 8a is formed at the lower end portion of the shoulder member 8 as an engaging means with the step portion 2d of the container body 2 over the entire circumference. A concave fitting portion 8d is formed on the inner surface of the throttle portion 8a, and a ring-shaped packing 10b for preventing rotation is disposed in the concave fitting portion 8d. The concave fitting portion 8d may be provided in the step portion 2d of the container main body 2 and the packing 10b may be disposed there, and the restricting portion 8a as the engaging means is smooth from a bent portion. The angle may be various up to a tapered shape, and it is not particularly necessary to cover the entire circumference of the container body, and it may be a locking means such as one or more locking claws at an appropriate location. The member 8 may have any shape as long as the member 8 has a shape that can be caught by the step 2d of the container body 2 and cannot move further upward.
[0042]
When attaching the shoulder member 8, the shoulder member 8 is inserted from the lower side of the container body 2, and the packing 10b disposed in the recessed fitting portion 8d on the inner surface of the throttle portion 8a is brought into contact with the step 2d of the container body 2. Let Next, the shoulder ring screw 8b formed on the inner surface is screwed into the shoulder ring screw described later to couple them together. In this case, the friction between the packing 10b and the step 2d wall surface of the container body 2 Since the resistance increases, the shoulder member 8 is prevented from co-rotating, and the shoulder member 8 can be securely fixed to the container body 2 by screwing the shoulder ring, and the shoulder member 8 is also prevented from loosening. it can.
[0043]
Reference numeral 9 denotes a shoulder ring positioned inward of the shoulder member 8 and has a cylindrical shape made of resin, and a shoulder ring screw 9a capable of being screwed to the shoulder member inner screw 8b is provided on the lower outer peripheral surface thereof. Above that, a cylindrical rib 9d is formed. The height of the rib 9d is formed higher than the bottom surface of the vegetable case 6 which is a content member arranged at the top of the container body 2, and carries the guide for storing the vegetable case 6 and the insulated container. Prevent rattling of the vegetable compartment 6 at the time. The rib 9d is not particularly required to be cylindrical, and may have a shape in which, for example, several ribs are erected.
[0044]
The attachment of the shoulder ring 9 and the shoulder member 8 will be described. First, the shoulder member 8 is inserted from below the container body 2, and the packing 10b disposed in the recessed fitting portion 8d on the inner surface of the throttle portion 8a is disposed on the container body 2. It abuts on the part 2d. Next, the shoulder ring 9 is inserted from above the container body 2, the shoulder ring screw 9a of the shoulder ring 9 is screwed into the shoulder member inner screw 8b of the shoulder member 8, and both are tightened. In this case, the packing 10b disposed in the recessed fitting portion 8d of the shoulder member 8 is in strong contact with the step portion 2d of the container body 2, and the shoulder member 8 does not rotate together with the shoulder ring 9. The coupling is surely performed. Furthermore, even if it receives a vibration after a coupling | bonding, both coupling | bonding will not loosen.
[0045]
After combining the shoulder ring 9 and the shoulder member 8, the soup bowl 4, the rice bowl 5, and the vegetable bowl 6 are placed in the container body 2 and the lid member 3 is covered. The lid member 3 is formed by screwing a lid screw 3a formed on the inner surface thereof into the shoulder member outer side screw 8c. The screwing is performed until the lower end surface of the lid member 3 comes into contact with the upper surface of the flange portion 8f of the shoulder member 8. After the contact, even if the lid member 3 is rotated, the packing 10b disposed in the recessed fitting portion 8d of the shoulder member 8 is in strong contact with the stepped portion 2d of the container body 2, and therefore the shoulder member 8 does not rotate together. The lid member 3 is completely closed at the contact position of the shoulder member 8.
[0046]
The loosening torque for releasing the coupling between the shoulder member 8 and the lid member 3 is naturally smaller than that of the shoulder ring 9 and the shoulder member 8, and the closing torque is closed. When the lid is completed, the inner surface of the top plate of the lid member 3 does not come into contact with the upper surface of the vegetable case 6, but if it is in a weak contact state rather than being pressed strongly, the movement of the vegetable case 6 or the like is prevented. However, it may be in a contact state that does not greatly deform the container such as the vegetable tray 6.
[0047]
(Third embodiment)
In FIG. 3, a rib is provided on the inner surface of the top plate of the lid member, the rib is in contact with the upper surface of the lid of the vegetable case, and a gap is provided between the upper surface of the buttock of the shoulder member and the lower end surface of the lid member. An example of preventing rotation will be shown. Note that this embodiment is the same as that of the first embodiment except that a rib serving as a detent means is provided on the inner surface of the top plate of the lid member. The description is omitted because it refers to the form of, and only the description of the relevant part is given.
[0048]
That is, a lid screw 3a that can be screwed to the shoulder member outer screw 8c is formed on the inner peripheral surface in the vicinity of the opening of the lid member 3, and a cylindrical shape is formed on the inner surface of the top plate constituting the horizontal portion. The rib 3b is suspended. The rib 3b has a tip on the uppermost content member, that is, the upper surface of the vegetable tray 6 before the lower end surface of the lid member 3 comes into contact with the upper surface of the flange 8f of the shoulder member 8 when the lid member 3 is closed. Any shape such as an appropriate number of rod-shaped bodies may be used as long as they are in contact with each other.
[0049]
Then, the shoulder ring 9 and the shoulder member 8 are joined by the procedure described in the first embodiment, and the soup bowl 4, the rice bowl 5 and the vegetable bowl 6 are put in the container body 2 and the lid member 3 is covered. Become. The lid member 3 is formed by screwing a lid screw 3a formed on the inner surface of the lid member 3 into the shoulder member outer screw 8c, and the lower end surface of the lid member 3 contacts the upper surface of the flange portion 8f of the shoulder member 8. In this embodiment, the rib 3b comes into contact with the upper surface of the vegetable case 6 before the lower end surface of the lid member 3 comes into contact with the upper surface of the collar portion 8f of the shoulder member 8. Therefore, the lid member 3 cannot be screwed any further, and a gap 3c is formed between the lower end surface of the lid member 3 and the upper surface of the flange portion 8f of the shoulder member 8. The formation of the gap 3c means that the lower end surface of the lid member 3 and the upper surface of the flange portion 8f of the shoulder member 8 do not come into contact with each other. Thus, the harmful effects of loosening are prevented.
(Fourth embodiment)
4 may be the lower end surface of the lid member 3 that can come into contact with the upper surface of the flange portion 8f of the shoulder member 8 or the upper surface of the flange portion 8f of the shoulder member 8 when the lid member is closed. An example in which a plurality of ribs are provided, the ribs are in contact with the upper surface of the flange portion 8f of the shoulder member 8, and the contact area between the upper surface of the flange portion 8f and the lower end surface of the lid member is reduced to prevent co-rotation of the shoulder member. FIG. 5 shows an enlarged sectional view thereof. Note that this embodiment is also the same as that of the first embodiment except that a rib is provided on the lower end surface of the lid member. Therefore, for those, refer to those of the first embodiment. The description is omitted as it is, and only the description of the relevant part is given.
[0050]
That is, a lid screw 3a that can be screwed into the shoulder member outer screw 8c is formed on the inner peripheral surface in the vicinity of the opening of the lid member 3, and a lid member that can come into contact with the upper surface of the flange 8f of the shoulder member 8 A plurality of ribs 3 b are suspended at equal intervals on the lower end surface of 3. The rib 3b comes into contact with the upper surface of the flange portion 8f of the shoulder member 8 when the lid member 3 is closed. In particular, the rib 3b may have any shape, but it is better that the contact area is as small as possible. Further, the rib 3b has been described as being provided on the lower end surface of the lid member, but may be provided on the upper surface of the flange portion 8f of the shoulder member 8.
[0051]
Then, the shoulder member 8 is firmly attached to the container main body 2 by the shoulder ring 9, and the soup bowl 4, the rice cooker 5, and the vegetable tray 6 are placed in the container main body 2, and then a lid screw formed on the inner surface of the lid member 3. 3a is screwed into the shoulder member outer screw 8c to close the lid. As described above, the plurality of ribs 3b are provided on the lower end surface of the lid member 3 that can come into contact with the upper surface of the flange portion 8f of the shoulder member 8. When the lid member 3 is screwed down, the tip of the rib 3b comes into contact with the upper surface of the flange portion 8f of the shoulder member 8. The contact area between the rib 3b and the upper surface of the flange portion 8f of the shoulder member 8 can be made smaller than the conventional one, and the contact friction between the two is reduced accordingly. The adverse effect of the shoulder member 8 co-rotating and loosening is reduced.
In another embodiment, the rotation prevention can also be achieved by reversing the screw direction between the shoulder member 8 and the shoulder ring 9 and the screw direction between the lid member 3 and the shoulder member 8. it can.
[0052]
The present invention is not limited to the configuration of each of the embodiments described above, and it is of course possible to change the design as appropriate without departing from the scope of the invention.
[0053]
【The invention's effect】
In the first and second aspects of the invention, a step is provided on the outer surface of the outer cylinder of the container body, a shoulder member is attached from below, a shoulder ring is attached from above, and the step is larger than the diameter of the step below. The shoulder member is formed by hooking and attaching the lower end of the shoulder member to the stepped portion, so that the shoulder member can be easily attached and detached, and after the shoulder member is attached, even if the shoulder member and the container body are screwed together Since the container body does not fall down below the shoulder member even if it comes off, safety can be improved. In addition, since it is not necessary to provide a screw in the container body, the shape of the press mold for forming the container body can be simplified, the cost can be reduced, and after the shoulder member and the lid member are fitted. Can eliminate the gap between them, so it can be made beautiful. Furthermore, in the coating of the place except the step part of the container main body, since the step part can be used for masking, the painting work can be simplified.
[0054]
In the invention according to claim 3, the shoulder member and the shoulder ring are arranged such that the shoulder member is disposed outward and the shoulder ring is disposed inward, and the contact portions thereof are screw-fitted. In addition to the effects of the invention according to 2, the shoulder member and the shoulder ring can be integrally coupled simultaneously, and both can be firmly coupled to the container body.
[0055]
In the inventions according to claims 4 to 6, in addition to the effects of the inventions according to claims 1 to 3, the shoulder ring is provided by providing a detent means between the container body and the shoulder member and / or the shoulder ring. It is possible to prevent the shoulder member from co-rotating when screwed to the shoulder member, and to prevent loosening due to vibration after the coupling of the both.
[0056]
In the invention according to claim 7, in addition to the effects of the invention according to claims 1 to 4, the upper end of the shoulder ring is positioned above the upper end of the container main body, and a rib is provided at a portion facing the content member. In the case of a lunch jar, a vegetable case is disposed in the vicinity of the shoulder ring, so that it is possible to prevent the contents members such as the vegetable case from rattling inside when being carried after the lid is closed.
[0057]
In the invention according to claim 8, by providing a gap between the lid member and the shoulder member, in addition to the effects of the inventions according to claims 1 to 5, when the lid member is closed, the lid member is used as the shoulder member. Therefore, it is possible to reliably prevent the shoulder member from rotating together and loosening the screwing of the shoulder member and the shoulder ring.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a first embodiment of a portable heat insulating container of the present invention.
FIG. 2 is a cross-sectional view showing a second embodiment of the portable heat insulating container of the present invention.
FIG. 3 is a cross-sectional view showing a third embodiment of the portable heat insulating container of the present invention.
FIG. 4 is a cross-sectional view showing a fourth embodiment of the portable heat insulating container of the present invention.
5 is an enlarged cross-sectional view of a main part of FIG.
FIG. 6 is a cross-sectional view of a conventional portable insulated bottle.
[Explanation of symbols]
1 ... Launcher 2 ... Container body 3 ... Lid member
4 ... Sower 5 ... Rice 8 ... Shoulder
20 ... Inner cylindrical body 21 ... Outer cylindrical body 22 ... Internal space
2a ... Upper wall 2b ... Body 2c ... Bottom wall
2d ... Step 2e ... Projection 3b ... Rib
3c: Clearance 8a ... Restricted part 8c ... Shoulder member outer screw
8d ... recessed fitting part 9 ... shoulder ring 9a ... shoulder ring screw
9b ... Flange 9c ... Groove 9d ... Rib
10 ... packing 40 ... soup bowl body 44 ... rubber valve
50 ... Rice cooker body 52 ... Inner lid body 53 ... Upper plate
54 ... engaging groove 55 ... buttocks 58 ... heat insulating material
62 ... bulging part 63 ... groove part
