JP4036790B2

JP4036790B2 - Insulated container

Info

Publication number: JP4036790B2
Application number: JP2003140447A
Authority: JP
Inventors: 治齋藤; 一彦法月; 真一浦田; 修小簑
Original assignee: Zojirushi Corp; Aiho Corp
Current assignee: Zojirushi Corp; Aiho Corp
Priority date: 2003-05-19
Filing date: 2003-05-19
Publication date: 2008-01-23
Anticipated expiration: 2023-05-19
Also published as: JP2004337518A

Description

【０００１】
【発明の属する技術分野】
本発明は、積み重ね状態の安定化を図ることができる断熱容器に関する。
【０００２】
【従来の技術】
従来、例えば上面開口を有する断熱二重構造の容器本体と、容器本体の上面開口を開閉する脱着可能な断面二重構造の蓋体とを備え、容器本体の底面部に４つの脚部およびクロス状の凸部をプレス成形により形成した断熱容器（金属製保温容器）が知られている（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開２００１−２３８８０４号公報（第４頁、図２）
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来の断熱容器では、例えば、蓋体にて容器本体の上面開口が閉じられた状態の断熱容器同士が積み重ねられる場合や、容器本体から取り外された状態の蓋体同士が積み重ねられる場合に、その積み重ね状態が不安定となるおそれがある。
【０００５】
本発明は、このような点に鑑みなされたもので、積み重ね状態の安定化を図ることができる断熱容器を提供することを目的とする。
【０００６】
【課題を解決するための手段】
請求項１記載の断熱容器は、上面開口を有する断熱二重構造の容器本体と、この容器本体の前記上面開口を開閉する脱着可能な断熱二重構造の蓋体とを備え、前記容器本体の底面部には、環状凸部が形成され、前記蓋体の上面部には、前記容器本体の前記環状凸部の内側に嵌合可能な形状の環状凸部が形成され、前記蓋体の下面部には、前記蓋体の前記環状凸部の内側に嵌合可能な形状の凸部が形成され、前記蓋体にて前記容器本体の前記上面開口が閉じられた状態の断熱容器同士が積み重ねられる場合には、一の前記断熱容器の前記容器本体の前記環状凸部の内側に他の前記断熱容器の前記蓋体の前記環状凸部が嵌め合わされ、前記容器本体から取り外された状態の前記蓋体同士が積み重ねられる場合には、一の前記蓋体の前記環状凸部の内側に他の前記蓋体の前記凸部が嵌め合わされる断熱容器であって、前記容器本体の前記環状凸部および前記蓋体の前記環状凸部は、いずれも４つの直線状部分を有する略矩形環状に形成され、前記各直線状部分の略中央位置には、直線状の溝方向がその各直線状部分の直線方向に対して傾斜した水切溝が幅方向一端から他端にわたって形成され、前記各水切溝は、前記容器本体および前記蓋体を所定状態にして搬送する際にローラコンベヤのローラの上端がその各水切溝内に入り込まないように形成され、前記各環状凸部の直線状部分に対して直交する方向から前記水切溝をみた場合、前記各環状凸部における水切溝の一端に臨んだ部分と前記各環状凸部における水切溝の他端に臨んだ部分とが、前記水切溝の傾斜度合および前記水切溝の幅から互いに重なり合うようになっているものである。
【０００７】
また、請求項２記載の断熱容器は、請求項１記載の断熱容器において、容器本体の環状凸部の４つの直線状部分および蓋体の環状凸部の４つの直線状部分は、いずれも相対する２つの長辺直線状部分および相対する２つの短辺直線状部分にて構成され、前記長辺直線状部分の水切溝の溝方向と前記短辺直線状部分の水切溝の溝方向とが、一直線上に位置せず、互いに平行状に位置するものである。
【０００８】
【発明の実施の形態】
以下、本発明の断熱容器の一実施の形態の構成を図面を参照して説明する。
【０００９】
図１において、１は断熱容器で、この断熱容器１は、例えば給食センターで調理された食品（焼物、揚物、サラダ等）を収容するステンレス製の角型二重食缶（断熱食缶）である。
【００１０】
この断熱容器１は、上面開口２を有する断熱二重構造の容器本体３と、この容器本体３の上面開口２を開閉する脱着可能な断熱二重構造の蓋体４とを備えている。
【００１１】
容器本体３は、図１ないし図３に示すように、ステンレス製の外容器６とステンレス製の内容器７との間に断熱材８が配設された断熱二重構造となっている。また、容器本体３の全体は、内部に食品が収容される上面開口状の有底四角筒形状（角型形状）に形成されている。
【００１２】
そして、容器本体３の底面部（下面部）の周縁位置には、比較的幅広の帯状で略矩形環状の環状凸部11がプレス成形により一体に形成されている。この環状凸部11は、容器本体３の補強のためのもので、容器本体３の脚部も兼ねている。
【００１３】
また、この容器本体３の環状凸部11には、底面部を上にして容器本体３を洗浄装置（図示せず）で洗浄する際に環状凸部11の内側に水が溜まらないようにするための複数、例えば４つの比較的幅細（狭巾）の水切溝12が形成されている。
【００１４】
すなわち、容器本体３の環状凸部11の４つの直線状部分（相対する２つの長辺直線状部分13aおよび相対する２つの短辺直線状部分13b）13の各々の略中央位置には、直線状の溝方向（図示イ方向）が直線状部分13の直線方向に対して傾斜した１本の水切溝12が、直線状部分13の幅方向一端から他端にわたって形成されている。なお、長辺直線状部分13aの水切溝12と、短辺直線状部分13bの水切溝12とは、互いに平行状であるが、一直線上に位置していない。
【００１５】
また、これらの各水切溝12は、容器本体３を所定状態にして搬送方向（図示ロ方向）に搬送する際にローラコンベヤ16のローラ17の上端がその水切溝12内に入り込まないように形成されている。
【００１６】
すなわち、容器本体３をその底面部を下にしかつその側面部（取手21のある側面部または取手21のない側面部）を搬送方向下流に向けた所定状態として搬送方向（図示ロ方向）に搬送する際に、直線型のローラコンベヤ16のローラ17の上端が水切溝12内に入り込まないように、各水切溝12は、所定の溝幅寸法をもって、環状凸部11の直線状部分13にこの直線状部分13の直線方向に対して傾斜状に形成されている。
【００１７】
なお、環状凸部11の直線状部分13に対して直交する側面方向から水切溝12をみた場合、環状凸部11における水切溝12の一端に臨んだ部分18と環状凸部11における水切溝12の他端に臨んだ部分19とが、水切溝12の傾斜度合および水切溝12の幅から互いに重なり合うようになっている。
【００１８】
また一方、容器本体３の側面部の上下方向略中央位置には、上面開口２が開いた状態の容器本体３同士の積み重ねを可能とするための段部20が折曲げにより一体に形成されている。
【００１９】
また、容器本体３の相対する側面部外面の上部位置には、一対の取手21が設けられているとともに、蓋体４を容器本体３の上面開口２に臨んだ上端部に固定するための一対の引掛体22が設けられている。
【００２０】
蓋体４は、容器本体３の上面開口２に臨んだ上端部に対して脱着可能なもので、図１、図４および図５に示すように、上記容器本体３と同様、ステンレス製の外蓋26とステンレス製の内蓋27との間に断熱材28が配設された断熱二重構造となっている。また、蓋体４の全体は、容器本体３の上面開口２に対応した略矩形の板形状に形成されている。
【００２１】
そして、蓋体４の上面部の中央近傍位置には、蓋体４の補強のためのものであって、容器本体３の環状凸部11の内側に嵌合可能な形状の環状凸部31が形成されている。すなわち、蓋体４の上面部の中央近傍位置には、容器本体３の環状凸部11と略同じ幅寸法および高さ寸法を有する比較的幅広の帯状で略矩形環状の環状凸部31がプレス成形により一体に形成されている。
【００２２】
また、この蓋体４の環状凸部31には、上記容器本体３の環状凸部11と同様、上面部を上にして蓋体４を洗浄装置（図示せず）で洗浄する際に環状凸部31の内側に水が溜まらないようにするための複数、例えば４つの比較的幅細（狭巾）の水切溝32が形成されている。
【００２３】
すなわち、蓋体４の環状凸部31の４つの直線状部分（相対する２つの長辺直線状部分33aおよび相対する２つの短辺直線状部分33b）33の各々の略中央位置には、直線状の溝方向（図示イ方向）が直線状部分の直線方向に対して傾斜した１本の水切溝32が、直線状部分33の幅方向一端から他端にわたって形成されている。なお、長辺直線状部分33aの水切溝32と、短辺直線状部分33bの水切溝32とは、互いに平行状であるが、一直線上に位置していない。
【００２４】
また、これらの各水切溝32は、蓋体４を所定状態にして搬送方向（図示ロ方向）に搬送する際にローラコンベヤ16のローラ17の上端がその水切溝32内に入り込まないように形成されている。
【００２５】
すなわち、蓋体４をその上面部を下にしかつその側面部（引掛受け体42のある側面部または引掛受け体42のない側面部）を搬送方向下流に向けた所定状態として搬送方向（図示ロ方向）に搬送する際に、直線型のローラコンベヤ16のローラ17の上端が水切溝32内に入り込まないように、各水切溝32は、所定の溝幅寸法をもって、環状凸部31の直線状部分33にこの直線状部分33の直線方向に対して傾斜状に形成されている。
【００２６】
なお、環状凸部31の直線状部分33に対して直交する側面方向から水切溝をみた場合、環状凸部31における水切溝32の一端に臨んだ部分38と環状凸部31における水切溝32の他端に臨んだ部分39とが、水切溝32の傾斜度合および水切溝32の幅から互いに重なり合うようになっている。
【００２７】
また、蓋体４の下面部の中央位置には、蓋体４の補強のためのものであって、蓋体４の環状凸部31の内側に嵌合可能な形状、例えば略矩形状の凸部40がプレス成形により一体に形成されている。この凸部40の高さ寸法は、環状凸部11，31の高さ寸法と略同じである。
【００２８】
さらに、蓋体４の下面部の周縁位置には、略矩形環状の脚凸部41がプレス成形により一体に形成されている。この脚凸部41の高さ寸法は、同じ面の中央側の凸部40の高さ寸法よりやや高くなっている。
【００２９】
また一方、蓋体４の側面部には、容器本体３への蓋体４の取付け時に引掛体22を引掛ける一対の引掛受け体42が設けられている。
【００３０】
そして、図６に示すように、蓋体４にて容器本体３の上面開口２が閉じられた状態の断熱容器１同士が例えば２つ積み重ねられる場合には、上段の断熱容器（一の断熱容器）１の容器本体３の底面部の環状凸部11の内側に下段の断熱容器（他の断熱容器）１の蓋体４の上面部の環状凸部31が嵌め合わされ、環状凸部11の下面が蓋体４のうち環状凸部31がない部分の上面に面接触しかつ環状凸部31の上面が容器本体３のうち環状凸部11がない部分の底面に面接触する。このため、断熱容器１同士の積み重ね状態は安定し、がたつきが生じるようなこともない。
【００３１】
また、図７に示すように、容器本体３の上端部から取り外された状態の蓋体４同士が例えば２つ積み重ねられる場合には、下段の蓋体（一の蓋体）４の上面部の環状凸部31の内側に上段の蓋体（他の蓋体）４の下面部の凸部40が嵌め合わされ、下段の蓋体４の環状凸部31の上面が上段の蓋体４のうち凸部40および脚凸部41がない部分の下面に面接触しかつ上段の蓋体４の脚凸部41の下面が下段の蓋体４のうち環状凸部31がない部分の上面に面接触する。このため、蓋体４同士の積み重ね状態は安定し、がたつきが生じるようなこともない。
【００３２】
さらに、図８に示すように、上面開口２が開いた状態の容器本体３同士を例えば２つ積み重ねる際には、下段の容器本体３の段部20近傍まで上段の容器本体３が入り込む。
【００３３】
そして、43は、容器本体３の外側面の段部20に突出している突部（６ヶ所）で、容器本体３同士を積み重ねた時、上段の容器本体３の突部43が下段の容器本体３の上面開口２部分に載り、相方間に間隙を有して積み重ねられるようにしている。
【００３４】
また、図１に示すように、蓋体４にて容器本体３の上面開口２が閉じられた状態の断熱容器１をローラコンベヤ16にて載置搬送する際には、例えば容器本体３の底面部を下にしかつ取手21のある側面部を搬送方向下流に向けた状態として容器本体３をローラ17上に載置し、環状凸部11とローラ17とを常に接触させたまま、断熱容器１をローラ17にて搬送方向に移動させる。
【００３５】
このローラコンベヤ16による搬送の際に、ローラコンベヤ16のローラ17の上端が容器本体３の底面部の水切溝12内に入り込むようなことがなく、容器本体３はがたつきなくスムーズに搬送される。なお、上面部を下にしかつ引掛受け体42のある側面部を搬送方向下流に向けて蓋体４のみをローラコンベヤ16にて載置搬送する場合も同様で、ローラコンベヤ16のローラ17の上端が蓋体４の上面部の水切溝32内に入り込むようなことがなく、蓋体４ががたつきなくスムーズに搬送される。
【００３６】
このように、上記断熱容器１によれば、蓋体４にて容器本体３の上面開口２が閉じられた状態の断熱容器１同士が積み重ねられる場合には、上段の断熱容器１の容器本体３の環状凸部11の内側に下段の断熱容器１の蓋体４の環状凸部31が嵌め合わされ、また、容器本体３から取り外された状態の蓋体４同士が積み重ねられる場合には、下段の蓋体４の環状凸部31の内側に上段の蓋体４の凸部40が嵌め合わされるため、それぞれの場合において積み重ね状態の安定化を図ることができる。すなわち、ストッキング性の向上を図れる。
【００３７】
また、容器本体３の環状凸部11および蓋体４の環状凸部31の各々には、水切溝12，32が形成されているため、洗浄装置による洗浄時等に、環状凸部11，31の内側に水が溜まるようなことがない。
【００３８】
さらに、水切溝12，32が環状凸部11の数ヶ所において狭巾かつ斜めに横断するように形成されているため、ローラコンベヤ16による搬送の際のがたつきを適切に防止でき、容器本体３および蓋体４をスムーズに搬送でき、例えば容器本体３内から食品がこぼれるのを適切に防止できる。
【００３９】
なお、断熱容器１は、有底四角筒形状の容器本体３を備えた角型のものには限定されず、例えば、図示しないが、有底円筒形状の容器本体を備えた円筒型のもの等でもよい。
【００４０】
さらに、水切溝12，32の深さ寸法は、環状凸部11，31の高さ寸法と略同じにしてもよく、環状凸部11，31の高さ寸法より小さくしてもよい。
【００４１】
【発明の効果】
本発明によれば、蓋体にて容器本体の上面開口が閉じられた状態の断熱容器同士が積み重ねられる場合には、一の断熱容器の容器本体の環状凸部の内側に他の断熱容器の蓋体の環状凸部が嵌め合わされ、容器本体から取り外された状態の蓋体同士が積み重ねられる場合には、一の蓋体の環状凸部の内側に他の蓋体の凸部が嵌め合わされるため、積み重ね状態の安定化を図ることができ、また、洗浄時等に環状凸部の内側に水が溜まるようなことがなく、さらに、ローラコンベヤによる搬送の際のがたつきを適切に防止でき、容器本体および蓋体をスムーズに搬送できる。
【図面の簡単な説明】
【図１】本発明の断熱容器の一実施の形態を示す断面図である。
【図２】同上断熱容器の容器本体の上面図である。
【図３】同上断熱容器の容器本体の底面図である。
【図４】同上断熱容器の蓋体の上面図である。
【図５】同上断熱容器の蓋体の底面図である。
【図６】同上断熱容器同士を積み重ねた状態の断面図である。
【図７】同上蓋体同士を積み重ねた状態の断面図である。
【図８】同上容器本体同士を積み重ねた状態の断面図である。
【符号の説明】
１断熱容器
２上面開口
３容器本体
４蓋体
11 環状凸部
12 水切溝
13 ， 33 直線状部分
13a ， 33a 長辺直線状部分
13b ， 33b 短辺直線状部分
16 ローラコンベヤ
17 ローラ
31 環状凸部
32 水切溝
40 凸部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulating container capable of stabilizing a stacked state.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, a container body having a heat insulating double structure having an upper surface opening and a lid having a detachable sectional double structure for opening and closing the upper surface opening of the container body are provided, and four legs and a cloth are provided on the bottom surface of the container body. A heat insulating container (metal heat insulating container) in which a convex portion is formed by press molding is known (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-238804 A (page 4, FIG. 2)
[0004]
[Problems to be solved by the invention]
However, in the conventional heat insulating container, for example, when the heat insulating containers in a state where the upper surface opening of the container main body is closed by the lids are stacked, or when the cover bodies removed from the container main body are stacked. In addition, the stacked state may become unstable.
[0005]
This invention is made | formed in view of such a point, and it aims at providing the heat insulation container which can aim at stabilization of a stacking state.
[0006]
[Means for Solving the Problems]
The heat insulation container according to claim 1 includes a heat insulation double structure container body having an upper surface opening, and a removable heat insulation double structure lid body that opens and closes the upper surface opening of the container body. An annular protrusion is formed on the bottom surface, and an annular protrusion having a shape that can be fitted inside the annular protrusion of the container body is formed on the upper surface of the lid, and the lower surface of the lid A convex portion having a shape that can be fitted inside the annular convex portion of the lid body is formed in the portion, and the heat insulating containers in a state where the upper surface opening of the container body is closed by the lid body are stacked. In the case where the annular convex portion of the lid body of the other heat-insulating container is fitted inside the annular convex portion of the container main body of one of the heat-insulating containers, the state of the state of being removed from the container main body When the lids are stacked, the annular convex portion of one of the lids A heat-insulating container the convex portions of the other of the lid to the side is fitted, substantially the annular projection of the annular convex portion and the lid of the container body, with both four straight portion Formed in a rectangular ring shape, at approximately the center position of each linear portion, a draining groove is formed from one end to the other in the width direction in which the linear groove direction is inclined with respect to the linear direction of each linear portion, The drain grooves are formed so that the upper ends of the rollers of the roller conveyor do not enter the drain grooves when the container main body and the lid body are transported in a predetermined state, and the linear shapes of the annular protrusions are formed. When the draining groove is viewed from a direction perpendicular to the part, the part facing the one end of the draining groove in each annular convex part and the part facing the other end of the draining groove in each annular convex part are The inclination of the groove and the drainage groove Those adapted overlap each other from.
[0007]
Further, the heat insulating container according to claim 2 is the heat insulating container according to claim 1, wherein the four linear portions of the annular convex portion of the container body and the four linear portions of the annular convex portion of the lid body are all relative to each other. Two long-side linear portions and two opposing short-side linear portions, and the groove direction of the draining groove of the long-side linear portion and the groove direction of the draining groove of the short-side linear portion are , They are not positioned on a straight line but are positioned parallel to each other.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of an embodiment of the heat insulating container of the present invention will be described with reference to the drawings.
[0009]
In FIG. 1, 1 is an insulated container, and this insulated container 1 is a stainless steel square double food can (insulated food can) that contains food (baked goods, fried food, salad, etc.) cooked at a lunch center, for example. is there.
[0010]
The heat insulating container 1 includes a heat insulating double structure container body 3 having an upper surface opening 2 and a removable heat insulating double structure lid 4 that opens and closes the upper surface opening 2 of the container main body 3.
[0011]
As shown in FIGS. 1 to 3, the container body 3 has a heat insulating double structure in which a heat insulating material 8 is disposed between a stainless outer container 6 and a stainless inner container 7. Moreover, the whole container main body 3 is formed in the bottomed square cylinder shape (square shape) of the upper surface opening shape in which a foodstuff is accommodated inside.
[0012]
A relatively wide belt-like and substantially rectangular annular convex portion 11 is integrally formed by press molding at the peripheral position of the bottom surface portion (lower surface portion) of the container body 3. The annular convex portion 11 is for reinforcing the container body 3 and also serves as a leg portion of the container body 3.
[0013]
In addition, the annular protrusion 11 of the container body 3 prevents water from collecting inside the annular protrusion 11 when the container body 3 is cleaned with a cleaning device (not shown) with the bottom face up. A plurality of, for example, four relatively narrow (narrow) drainage grooves 12 are formed.
[0014]
That is, at the substantially central position of each of the four linear portions (two opposing long-side linear portions 13a and two opposing short-side linear portions 13b) 13 of the annular convex portion 11 of the container body 3, there is a straight line. One draining groove 12 in which the groove direction (b direction in the figure) is inclined with respect to the linear direction of the linear portion 13 is formed from one end to the other end of the linear portion 13 in the width direction. The draining groove 12 of the long side linear portion 13a and the draining groove 12 of the short side linear portion 13b are parallel to each other, but are not positioned on a straight line.
[0015]
Each of the drain grooves 12 is formed so that the upper end of the roller 17 of the roller conveyor 16 does not enter the drain groove 12 when the container body 3 is transported in the transport direction (direction B in the figure) with the container body 3 in a predetermined state. Has been.
[0016]
That is, the container body 3 is transported in the transport direction (the direction B in the figure) with the bottom surface facing down and the side surface (the side surface with the handle 21 or the side surface without the handle 21) in the predetermined state directed downstream in the transport direction. In order to prevent the upper ends of the rollers 17 of the linear roller conveyor 16 from entering the draining grooves 12, each draining groove 12 has a predetermined groove width dimension on the linear portion 13 of the annular convex portion 11. The linear portion 13 is formed to be inclined with respect to the linear direction.
[0017]
When the draining groove 12 is viewed from the side surface direction orthogonal to the linear portion 13 of the annular protrusion 11, the portion 18 facing the one end of the draining groove 12 in the annular protrusion 11 and the draining groove 12 in the annular protrusion 11 are shown. A portion 19 facing the other end of the groove overlaps with each other from the inclination degree of the draining groove 12 and the width of the draining groove 12.
[0018]
On the other hand, a stepped portion 20 for allowing stacking of the container main bodies 3 in a state where the upper surface opening 2 is opened is integrally formed by bending at a substantially central position in the vertical direction of the side surface of the container main body 3. Yes.
[0019]
A pair of handles 21 are provided at the upper positions of the outer side surfaces of the container body 3 facing each other and a pair for fixing the lid 4 to the upper end facing the upper surface opening 2 of the container body 3. A hook 22 is provided.
[0020]
The lid 4 is detachable with respect to the upper end of the container body 3 facing the upper surface opening 2, and as shown in FIGS. It has a heat insulating double structure in which a heat insulating material 28 is disposed between the cover 26 and the stainless steel inner cover 27. The entire lid 4 is formed in a substantially rectangular plate shape corresponding to the upper surface opening 2 of the container body 3.
[0021]
An annular convex portion 31 having a shape that can be fitted inside the annular convex portion 11 of the container body 3 is provided at a position near the center of the upper surface portion of the lid body 4 for reinforcing the lid body 4. Is formed. That is, a relatively wide belt-like, substantially rectangular annular ring-shaped protrusion 31 having substantially the same width and height as the ring-shaped protrusion 11 of the container body 3 is pressed near the center of the upper surface of the lid 4. It is integrally formed by molding.
[0022]
In addition, the annular convex portion 31 of the lid body 4 has an annular convex portion when the lid body 4 is cleaned with a cleaning device (not shown) with the upper surface facing upward, like the annular convex portion 11 of the container body 3. A plurality of, for example, four relatively narrow (narrow) drainage grooves 32 are formed to prevent water from accumulating inside the portion 31.
[0023]
That is, at the substantially central position of each of the four linear portions (two opposing long-side linear portions 33a and two opposing short-side linear portions 33b) 33 of the annular convex portion 31 of the lid body 4, One draining groove 32 is formed from one end to the other end in the width direction of the linear portion 33 with the groove direction (the direction B in the figure) inclined with respect to the linear direction of the linear portion. The draining groove 32 of the long side linear portion 33a and the draining groove 32 of the short side linear portion 33b are parallel to each other, but are not positioned on a straight line.
[0024]
Further, each of the drain grooves 32 is formed so that the upper end of the roller 17 of the roller conveyor 16 does not enter the drain groove 32 when the lid 4 is transported in the transport direction (direction B in the figure) with the lid body 4 in a predetermined state. Has been.
[0025]
In other words, the lid 4 is placed in the transport direction (shown in the figure) with the upper surface portion down and the side surface portion (the side surface portion with the hook receiving body 42 or the side surface portion without the hook receiving body 42) directed downstream in the transport direction. Each draining groove 32 has a predetermined groove width dimension so that the upper end of the roller 17 of the linear roller conveyor 16 does not enter the draining groove 32 when being conveyed in the direction). The portion 33 is formed to be inclined with respect to the linear direction of the linear portion 33.
[0026]
When the drain groove is viewed from the side surface direction orthogonal to the linear portion 33 of the annular protrusion 31, the portion 38 facing one end of the drain groove 32 in the annular protrusion 31 and the drain groove 32 in the annular protrusion 31 are shown. A portion 39 facing the other end overlaps with each other from the degree of inclination of the drain groove 32 and the width of the drain groove 32.
[0027]
Further, the central position of the lower surface portion of the lid body 4 is for reinforcing the lid body 4 and can be fitted inside the annular convex portion 31 of the lid body 4, for example, a substantially rectangular convex shape. The portion 40 is integrally formed by press molding. The height dimension of the convex portion 40 is substantially the same as the height dimension of the annular convex portions 11 and 31.
[0028]
Further, a substantially rectangular annular leg convex portion 41 is integrally formed by press molding at the peripheral position of the lower surface portion of the lid body 4. The height dimension of the leg convex portion 41 is slightly higher than the height dimension of the convex portion 40 on the center side of the same surface.
[0029]
On the other hand, a pair of hook receiving bodies 42 for hooking the hook body 22 when the lid body 4 is attached to the container body 3 are provided on the side surface of the lid body 4.
[0030]
As shown in FIG. 6, when, for example, two heat insulating containers 1 in a state where the upper surface opening 2 of the container main body 3 is closed by the lid body 4 are stacked, an upper heat insulating container (one heat insulating container) ) The annular convex portion 31 on the upper surface of the lid 4 of the lower thermal insulating container (other thermal insulating container) 1 is fitted inside the annular convex portion 11 on the bottom surface portion of the container body 3, and the lower surface of the annular convex portion 11. Of the lid 4 is in surface contact with the upper surface of the portion without the annular convex portion 31 and the upper surface of the annular convex portion 31 is in surface contact with the bottom surface of the portion of the container body 3 without the annular convex portion 11. For this reason, the stacked state of the heat insulating containers 1 is stable, and rattling does not occur.
[0031]
In addition, as shown in FIG. 7, when two lid bodies 4 in a state where they are removed from the upper end portion of the container body 3 are stacked, for example, the upper surface portion of the lower lid body (one lid body) 4. A convex portion 40 on the lower surface of the upper lid body (other lid body) 4 is fitted inside the annular convex portion 31, and the upper surface of the annular convex portion 31 of the lower lid body 4 is convex in the upper lid body 4. The lower surface of the leg convex portion 41 of the upper lid 4 is in surface contact with the upper surface of the lower lid body 4 where the annular convex portion 31 is absent. . For this reason, the stacked state of the lids 4 is stable, and no rattling occurs.
[0032]
Further, as shown in FIG. 8, when stacking, for example, two container bodies 3 with the upper surface opening 2 open, the upper container body 3 enters the vicinity of the step portion 20 of the lower container body 3.
[0033]
And 43 is the protrusion (6 places) which protrudes in the step part 20 of the outer side surface of the container main body 3, and when the container main bodies 3 are stacked, the protrusion 43 of the upper container main body 3 is the lower container main body. 3 is placed on the upper surface opening 2 and is stacked with a gap between them.
[0034]
As shown in FIG. 1, when the heat insulating container 1 in which the upper surface opening 2 of the container body 3 is closed by the lid 4 is placed and conveyed by the roller conveyor 16, for example, the bottom surface of the container body 3 is used. The container body 3 is placed on the roller 17 with the side facing down and the side surface with the handle 21 facing downstream in the transport direction, and the annular convex portion 11 and the roller 17 are always in contact with each other, and the heat insulating container 1 Is moved in the conveying direction by a roller 17.
[0035]
When transported by the roller conveyor 16, the upper end of the roller 17 of the roller conveyor 16 does not enter the draining groove 12 on the bottom surface of the container body 3, and the container body 3 is transported smoothly without rattling. The The same applies to the case where only the lid body 4 is placed and conveyed by the roller conveyor 16 with the upper surface portion facing down and the side surface portion with the catch receiving body 42 facing downstream in the conveying direction. Does not enter the draining groove 32 on the upper surface of the lid body 4, and the lid body 4 is smoothly transported without rattling.
[0036]
As described above, according to the heat insulating container 1, when the heat insulating containers 1 in the state where the upper surface opening 2 of the container main body 3 is closed by the lid 4 are stacked, the container main body 3 of the upper heat insulating container 1 is stacked. When the annular projections 31 of the lid 4 of the lower heat insulating container 1 are fitted inside the annular projection 11 and the lids 4 removed from the container body 3 are stacked together, Since the convex portion 40 of the upper lid body 4 is fitted inside the annular convex portion 31 of the lid body 4, the stacked state can be stabilized in each case. That is, the stocking property can be improved.
[0037]
Moreover, since the draining grooves 12 and 32 are formed in each of the annular convex portion 11 of the container body 3 and the annular convex portion 31 of the lid body 4, the annular convex portions 11 and 31 are used at the time of cleaning by a cleaning device. There is no water collecting inside.
[0038]
Furthermore, since the water drain grooves 12 and 32 are formed to be narrow and obliquely traverse at several places on the annular convex portion 11, it is possible to appropriately prevent rattling during the conveyance by the roller conveyor 16, and the container body 3 and the lid 4 can be transported smoothly, and for example, food can be appropriately prevented from spilling out of the container body 3.
[0039]
The heat insulating container 1 is not limited to a rectangular shape having a bottomed rectangular tube-shaped container main body 3. For example, although not shown, a cylindrical shape having a bottomed cylindrical container main body, etc. But you can .
[0040]
Furthermore, the depth dimension of the drain grooves 12 and 32 may be substantially the same as the height dimension of the annular protrusions 11 and 31, or may be smaller than the height dimension of the annular protrusions 11 and 31.
[0041]
【The invention's effect】
According to the present invention, when the heat insulating containers in the state where the upper surface opening of the container main body is closed by the lid are stacked, the other heat insulating container is placed inside the annular convex portion of the container main body of the one heat insulating container. When the annular protrusions of the lid are fitted and the lids in a state of being removed from the container main body are stacked, the protrusions of the other lid are fitted inside the annular protrusion of one lid. Therefore, it is possible to stabilize the stacked state, and there is no accumulation of water inside the annular convex part during cleaning, etc., and furthermore, rattling during the conveyance by the roller conveyor is prevented appropriately. The container body and the lid can be transported smoothly.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a heat insulating container of the present invention.
FIG. 2 is a top view of the container main body of the heat insulating container.
FIG. 3 is a bottom view of the container body of the heat insulating container.
FIG. 4 is a top view of the lid of the heat insulating container.
FIG. 5 is a bottom view of the lid body of the heat insulating container.
FIG. 6 is a cross-sectional view showing a state in which the same heat insulating containers are stacked.
FIG. 7 is a cross-sectional view showing a state where the same lid is stacked.
FIG. 8 is a sectional view showing a state in which the container main bodies are stacked.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat insulation container 2 Upper surface opening 3 Container body 4 Lid
11 Annular projection
12 Ditcher
13 and 33 linear parts
13a , 33a Long side linear part
13b , 33b Short side straight part
16 roller conveyor
17 rollers
31 Annular projection
32 Ditcher
40 Convex

Claims

A container body having a heat insulating double structure having an upper surface opening;
A removable heat insulating double structure lid that opens and closes the upper surface opening of the container body,
An annular projection is formed on the bottom surface of the container body,
On the upper surface portion of the lid, an annular convex portion having a shape that can be fitted inside the annular convex portion of the container body is formed.
A convex portion having a shape that can be fitted inside the annular convex portion of the lid body is formed on the lower surface portion of the lid body,
In the case where the heat insulating containers in a state where the upper surface opening of the container main body is closed by the lid body are stacked, the other heat insulating container is disposed inside the annular convex portion of the container main body of the one heat insulating container. The annular convex portion of the lid body is fitted,
In the case where the lids removed from the container main body are stacked, it is a heat insulating container in which the convex portions of the other lid body are fitted inside the annular convex portion of one of the lid bodies. And
The annular convex portion of the container body and the annular convex portion of the lid body are both formed in a substantially rectangular annular shape having four linear portions,
At approximately the center position of each linear portion, a draining groove in which the linear groove direction is inclined with respect to the linear direction of each linear portion is formed from one end to the other in the width direction
Each draining groove is formed so that the upper end of the roller of the roller conveyor does not enter into each draining groove when the container body and the lid body are transported in a predetermined state,
When the drain groove is viewed from a direction orthogonal to the linear portion of each annular protrusion, the portion facing the one end of the drain groove in each annular protrusion and the other end of the drain groove in each annular protrusion A heat-insulating container characterized in that the facing portion overlaps with each other from the degree of inclination of the draining groove and the width of the draining groove .

The four linear portions of the annular convex portion of the container body and the four linear portions of the annular convex portion of the lid body are respectively two opposing long side linear portions and two opposing short side linear portions. Configured,
The groove direction of the draining groove of the long side linear portion and the groove direction of the draining groove of the short side linear portion are not positioned on a straight line but are parallel to each other.
The heat insulating container according to claim 1.