JP5495248B2 - Cooling material holding mechanism and cooler box - Google Patents

Cooling material holding mechanism and cooler box Download PDF

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JP5495248B2
JP5495248B2 JP2008301870A JP2008301870A JP5495248B2 JP 5495248 B2 JP5495248 B2 JP 5495248B2 JP 2008301870 A JP2008301870 A JP 2008301870A JP 2008301870 A JP2008301870 A JP 2008301870A JP 5495248 B2 JP5495248 B2 JP 5495248B2
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cold
cold insulation
holding mechanism
groove
insulation material
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JP2010126182A (en
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俊輔 高木
篤史 竹田
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Sanko Co Ltd
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Sanko Co Ltd
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Description

本発明は、保冷材を保冷室に着脱可能に取り付けるための保冷材保持機構及びその保冷材保持機構を備えた保冷室としてのクーラーボックスに関する。   The present invention relates to a cold insulation material holding mechanism for detachably attaching a cold insulation material to a cold insulation chamber and a cooler box as a cold insulation chamber provided with the cold insulation material holding mechanism.

この種の保冷材保持機構の第１の従来例として、例えば、平面矩形のクーラーボックスの内側面に係止溝を形成し、その係止溝に保冷材の外縁部を圧入したものが知られている（例えば、特許文献１参照）。また、第２の従来例として、クーラーボックスの蓋体を二重構造にして、それら蓋同士の間に保冷材を収容し、内蓋の窓を通して保冷材をクーラーボックス内に臨ませたものが知られている（例えば、特許文献２参照）。
実開平０４−１２８２７５号公報（［０００７］、第１図、第２図） 実開平０４−３９７６号公報（第５頁、第１図） As a first conventional example of this type of cold insulation material holding mechanism, for example, an engagement groove is formed on the inner surface of a flat rectangular cooler box, and an outer edge portion of the cold insulation material is press-fitted into the engagement groove. (For example, refer to Patent Document 1). In addition, as a second conventional example, the cooler box lid has a double structure, the cold insulation material is accommodated between the lids, and the cold insulation material is exposed to the cooler box through the window of the inner lid. It is known (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 04-128275 ([0007], FIGS. 1 and 2) Japanese Utility Model Publication No. 04-3976 (5th page, Fig. 1)

しかしながら、上記した第１の従来例では、保冷材が圧入によって固定されていたので、保冷材の着脱作業が困難であった。また、保冷材の着脱を繰り返すと圧入部分が塑性変形して保持力が低下し、クーラーボックスの使用中に保冷材が離脱する事態が生じ得た。さらに、上記した第２の従来例では、保冷材を着脱する際に二重構造の蓋の分解が必要であるため、着脱作業に手間がかかった。   However, in the first conventional example described above, since the cold insulating material is fixed by press fitting, it is difficult to attach and detach the cold insulating material. In addition, when the cold insulation material was repeatedly attached and detached, the press-fitted portion was plastically deformed to reduce the holding force, and the cold insulation material could be detached during use of the cooler box. Further, in the above-described second conventional example, it is necessary to disassemble the double-structured lid when attaching / detaching the cold insulation material, so that the attaching / detaching work is troublesome.

本発明は、上記事情に鑑みてなされたもので、保冷材を容易に着脱可能な保冷材保持機構及びクーラーボックスの提供を目的とする。   This invention is made | formed in view of the said situation, and aims at provision of the cooler material holding | maintenance mechanism and cooler box which can attach or detach a cold insulator easily.

上記目的を達成するためになされた請求項１の発明に係る保冷材保持機構は、扁平な直方体形状の保冷材を、保冷室の壁体の内面に着脱可能に取り付けるための保冷材保持機構において、保冷材の１対の側縁部を受容可能な第１と第２の係合溝を壁体の内面に対向配置して設けると共に、壁体より弾性が高い弾性部材を第１の係合溝内に設け、第１と第２の係合溝の間の溝間開口を通して保冷材の一方の側縁部を第１の係合溝内に押し込むと、弾性部材の弾発力によって保冷材が押し戻されて他方の側縁部が第２の係合溝に嵌るようにしたところに特徴を有する。 The cold insulation material holding mechanism according to the invention of claim 1 made to achieve the above object is a cold insulation material holding mechanism for detachably attaching a flat rectangular parallelepiped cold insulation material to the inner surface of the wall of the cold storage chamber. The first and second engagement grooves capable of receiving a pair of side edges of the cold insulator are disposed opposite to the inner surface of the wall body, and an elastic member having higher elasticity than the wall body is provided in the first engagement. provided in the groove, it pushed the one side edge of the cold insulating material through the grooves between the opening between the first and the second engaging groove in the first engaging groove, cold insulating material by the elastic force of the elastic member Is pushed back so that the other side edge fits into the second engagement groove.

請求項２の発明は、請求項１に記載の保冷材保持機構において、保冷室の壁体は、ポリオレフィン系樹脂を５〜４５倍の発泡倍率で発泡させた発泡材で構成され、弾性部材は、ポリオレフィン系樹脂を１８〜６０倍の発泡倍率で発泡させた発泡材で構成されているところに特徴を有する。   The invention of claim 2 is the cold insulation material holding mechanism according to claim 1, wherein the wall of the cold insulation chamber is made of a foamed material obtained by foaming a polyolefin-based resin at a foaming ratio of 5 to 45 times, and the elastic member is It is characterized in that it is made of a foamed material obtained by foaming a polyolefin resin at a foaming ratio of 18 to 60 times.

請求項３の発明は、請求項２に記載の保冷材保持機構において、保冷室の壁体は、ポリプロピレンの発泡材で構成され、弾性部材は、ポリエチレンの発泡材で構成されているところに特徴を有する。   According to a third aspect of the present invention, in the cold insulation material holding mechanism according to the second aspect, the wall of the cold insulation chamber is made of a polypropylene foam material, and the elastic member is made of a polyethylene foam material. Have

請求項４の発明は、請求項１乃至３の何れかに記載の保冷材保持機構において、弾性部材は、第１と第２の係合溝の対向方向に延び、第１の係合溝の奥面には、弾性部材の一端部を受容して他端部を第１の係合溝の奥面から突出した状態にするための溝内凹部が形成されているところに特徴を有する。   According to a fourth aspect of the present invention, in the cold insulator holding mechanism according to any one of the first to third aspects, the elastic member extends in a direction opposite to the first and second engagement grooves, and the first engagement groove The inner surface is characterized in that a recess in the groove for receiving one end of the elastic member and projecting the other end from the inner surface of the first engaging groove is formed on the inner surface.

請求項５の発明は、請求項１乃至４の何れかに記載の保冷材保持機構において、第１の係合溝の内部には、保冷材を押し込んだときに当接して、弾性部材の変形量を規制するストッパが備えられているところに特徴を有する。   According to a fifth aspect of the present invention, in the cold insulation material holding mechanism according to any one of the first to fourth aspects, the first engagement groove is brought into contact with the cold insulation material when the elastic material is deformed. It is characterized in that a stopper for regulating the amount is provided.

請求項６の発明に係るクーラーボックスは、請求項１乃至５の何れかに記載の保冷材保持機構を備えたところに特徴を有する。   The cooler box which concerns on invention of Claim 6 has the characteristics in the place provided with the cold insulating material holding mechanism in any one of Claim 1 thru | or 5.

［請求項１の発明］
請求項１の保冷材保持機構では、保冷材を取り付けるには、保冷材の一方の側縁部を溝間開口から第１の係合溝内に押し込み、その押圧操作により弾性部材を圧縮変形させる。そして、保冷材を回動して他の側縁部を第２の係合溝に突き合わせ、この状態で押圧操作を止める。すると、弾性部材の弾発力によって保冷材の他方の側縁部が第２の係合溝に嵌り、保冷材の１対の側縁部が第１と第２の係合溝に係合した状態に保持される。また、保冷材を取り外すには、保冷材を第１の係合溝側に押圧して保冷材の他方の側縁部を第２の係合溝から離脱した後、保冷材を溝間開口側に起こしてから引き抜けばよい。ここで、弾性部材は保冷室の壁体より弾性が高いので、保冷材が圧入されていた従来のものより、容易に保冷材を着脱することができる。また、保冷材を着脱するために従来のように二重構造の蓋体を分解するような操作が不要であるので、着脱操作に手間がかからない。 [Invention of Claim 1]
In the cold insulation material holding mechanism according to claim 1, in order to attach the cold insulation material, one side edge portion of the cold insulation material is pushed into the first engagement groove from the opening between the grooves, and the elastic member is compressed and deformed by the pushing operation. . Then, the cold insulator is rotated so that the other side edge is brought into contact with the second engagement groove, and the pressing operation is stopped in this state. Then, the other side edge portion of the cold insulating material was fitted into the second engagement groove by the elastic force of the elastic member, and the pair of side edge portions of the cold insulation material was engaged with the first and second engagement grooves. Kept in a state. Further, in order to remove the cold insulation material, the cold insulation material is pressed toward the first engagement groove and the other side edge portion of the cold insulation material is detached from the second engagement groove, and then the cold insulation material is removed from the groove opening side. Wake up and pull out. Here, since the elastic member has higher elasticity than the wall of the cold insulation chamber, the cold insulation material can be easily attached and detached from the conventional one in which the cold insulation material is press-fitted. Further, since an operation for disassembling the double-structured lid as in the prior art is not required for attaching / detaching the cold insulation material, the attaching / detaching operation does not take time and effort.

［請求項２及び３の発明］
請求項２の構成によれば、保冷室の壁体を構成する発泡材も弾性部材を構成する発泡材も共にポリオレフィン系樹脂であるので、保冷室の壁体と弾性部材とを分別せずに容易にリサイクルを行うことができる。 [Inventions of Claims 2 and 3]
According to the configuration of claim 2, since the foam material constituting the wall of the cold insulation chamber and the foam material constituting the elastic member are both polyolefin-based resin, the wall of the cold insulation chamber and the elastic member are not separated. Recycling can be performed easily.

ここで、代表的なポリオレフィン系樹脂であるポリプロピレンとポリエチレンとでは、ポリプロピレンは比較的容易に剛性を高くすることができる一方、ポリエチレンは比較的容易に弾性を高くすることができる。そして、請求項３の構成では、保冷室の壁体をポリプロピレンの発泡材で構成したので壁体の剛性が高くなり、保冷材の保持が安定する。これに加え、弾性部材をポリエチレンの発泡材で構成したので弾性が高くなり、保冷材の着脱操作が容易になる。   Here, with polypropylene and polyethylene, which are typical polyolefin resins, polypropylene can increase rigidity relatively easily, while polyethylene can increase elasticity relatively easily. According to the third aspect of the present invention, since the wall of the cold insulation chamber is made of a foamed polypropylene material, the rigidity of the wall is increased and the holding of the cold insulation is stabilized. In addition, since the elastic member is made of a polyethylene foam material, the elasticity becomes high, and the operation for attaching and detaching the cold insulation material becomes easy.

［請求項４の発明］
請求項４の構成によれば、第１の係合溝の奥面には、弾性部材の一端部を受容する溝内凹部が形成されているので、その溝内凹部の奥行き分だけ弾性部材が、圧縮変形方向に長くなる。これにより弾性部材の全長に対する変形量の割合が小さく抑えられ、弾性部材の塑性変形を防ぐことができる。 [Invention of claim 4]
According to the fourth aspect of the present invention, the inner surface of the first engagement groove is formed with the groove recess for receiving the one end of the elastic member, so that the elastic member has a depth corresponding to the depth of the groove recess. It becomes longer in the direction of compression deformation. Thereby, the ratio of the deformation amount with respect to the full length of the elastic member is suppressed to be small, and plastic deformation of the elastic member can be prevented.

［請求項５の発明］
請求項５の構成によれば、第１の係合溝の内部のストッパと保冷材との当接により、弾性部材の変形量を規制して弾性部材の塑性変形を防ぐことができる。 [Invention of claim 5]
According to the configuration of the fifth aspect, the amount of deformation of the elastic member can be regulated and the plastic deformation of the elastic member can be prevented by the contact between the stopper inside the first engagement groove and the cold insulating material.

［請求項６の発明］
請求項６のクーラーボックスは、請求項１乃至６の何れかに記載の保冷材保持機構を備えているので、保冷材の着脱が容易になりかつ保冷材の保持が安定する。 [Invention of claim 6]
Since the cooler box according to the sixth aspect includes the cold insulation material holding mechanism according to any one of the first to sixth aspects, the cold insulation material can be easily attached and detached, and the retention of the cold insulation material is stabilized.

［第１実施形態］
以下、本発明の実施形態を図１〜図４に基づいて説明する。図１（Ａ）に示すように、本実施形態のクーラーボックス１０は、ボックス本体１１と蓋体１２とからなる。ボックス本体１１は、上面開放の直方体状になっている。また、図１（Ｂ）に示すように、ボックス本体１１の側壁１１Ｓの上端面には、その内縁側に内側嵌合突壁１１Ａが突出形成されている。 [First Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. As shown in FIG. 1A, the cooler box 10 of the present embodiment includes a box body 11 and a lid body 12. The box body 11 has a rectangular parallelepiped shape with an open top surface. Further, as shown in FIG. 1B, an inner fitting protruding wall 11A is formed on the upper edge surface of the side wall 11S of the box body 11 so as to protrude on the inner edge side.

蓋体１２は、四角形の平板状になっている。また、蓋体１２のうちボックス本体１１側を向いた内面１２Ｎの外縁部からは外側嵌合突壁１２Ａが突出している。そして、蓋体１２をボックス本体１１に組み付けると、ボックス本体１１の内側嵌合突壁１１Ａの外側に蓋体１２の外側嵌合突壁１２Ａが嵌合し、その外側嵌合突壁１２Ａの下端面が、ボックス本体１１の側壁１１Ｓの上端面に接合され状態になり、さらに、ボックス本体１１と蓋体１２の外側面同士が面一になる。   The lid 12 has a rectangular flat plate shape. Moreover, 12 A of outer fitting protrusion walls protrude from the outer edge part of the inner surface 12N which faced the box main body 11 side among the cover bodies 12. FIG. When the lid 12 is assembled to the box body 11, the outer fitting projection wall 12A of the lid 12 is fitted to the outside of the inner fitting projection wall 11A of the box body 11, and the bottom of the outer fitting projection wall 12A. The end surfaces are joined to the upper end surface of the side wall 11S of the box body 11, and the outer surfaces of the box body 11 and the lid 12 are flush with each other.

さて、蓋体１２の内面１２Ｎには、１対の保冷材４０，４０を取り付けるための１対の保冷材保持機構５０，５０が備えられている。保冷材４０は、図４に示されており、例えば、扁平な直方体状の容器に保冷液を充填してなる。なお、保冷材４０の容器には、表面積を大きくするために、厚さ方向に複数の貫通孔４１が形成されている。   Now, the inner surface 12N of the lid body 12 is provided with a pair of cold insulation material holding mechanisms 50, 50 for attaching the pair of cold insulation materials 40, 40. The cold insulation material 40 is shown in FIG. 4 and is formed by filling a cold insulation liquid into a flat rectangular parallelepiped container, for example. The container for the cold insulating material 40 has a plurality of through holes 41 in the thickness direction in order to increase the surface area.

図２（Ａ）に示すように、蓋体１２の内面１２Ｎには、１対の保冷材保持機構５０，５０を構成するための１対の扁平凹部１３，１３が陥没形成されている。それら各扁平凹部１３の開口１３Ｋ（本発明の「溝間開口」に相当する）は、長方形になっている。また、扁平凹部１３は、開口１３Ｋの開口幅に比べて奥行きが小さい扁平空間を内側に備えている。なお、１対の扁平凹部１３，１３は、それらの開口１３Ｋ，１３Ｋの間で長辺同士が互いに平行になるようにして対称配置されている。   As shown in FIG. 2 (A), a pair of flat recesses 13 and 13 for forming a pair of cold insulation material holding mechanisms 50 and 50 are recessed in the inner surface 12N of the lid 12. The opening 13K (corresponding to the “inter-groove opening” in the present invention) of each of the flat recesses 13 is rectangular. Moreover, the flat recessed part 13 is equipped with the flat space where depth is small compared with the opening width of the opening 13K inside. The pair of flat recesses 13 and 13 are symmetrically arranged between the openings 13K and 13K so that the long sides are parallel to each other.

図２（Ｂ）に示すように、扁平凹部１３のうち開口１３Ｋの短辺と平行な１対の内側面１３Ｔ，１３Ｔ同士の間隔は、保冷材４０の平面形状の長辺と略同一になっている。一方、図２（Ａ）に示すように、扁平凹部１３のうち開口１３Ｋの長辺と平行な１対の内側面１３Ｃ，１３Ｃには、開口１３Ｋの開口縁から互いに接近するように張り出した第１と第２の係合突壁３１Ｔ，３２Ｔが設けられている。そして、図３（Ａ）に示すように、第１の係合突壁３１Ｔと扁平凹部１３の底壁１２Ｂとそれらに挟まれた壁部とによって本発明に係る第１の係合溝３１が構成されている。また、第２の係合突壁３２Ｔと扁平凹部１３の底壁１２Ｂと、それらに挟まれた壁部とによって本発明に係る第２の係合溝３２が構成されている。   As shown in FIG. 2B, the distance between the pair of inner side surfaces 13T and 13T parallel to the short side of the opening 13K in the flat recess 13 is substantially the same as the long side of the planar shape of the cold insulator 40. ing. On the other hand, as shown in FIG. 2A, the pair of inner side surfaces 13C and 13C parallel to the long side of the opening 13K in the flat recess 13 protrudes from the opening edge of the opening 13K so as to approach each other. 1 and 2nd engagement protrusion walls 31T and 32T are provided. As shown in FIG. 3A, the first engagement groove 31T according to the present invention is formed by the first engagement protrusion wall 31T, the bottom wall 12B of the flat recess 13 and the wall portion sandwiched between them. It is configured. The second engagement groove 32 according to the present invention is configured by the second engagement protrusion wall 32T, the bottom wall 12B of the flat recess 13 and the wall portion sandwiched between them.

なお、１対の扁平凹部１３，１３の間では、第１の係合溝３１，３１同士が互いに離れた側に配置される一方、第２の係合溝３２，３２同士が互いに接近した側に配置されている。   Note that, between the pair of flat recesses 13 and 13, the first engagement grooves 31 and 31 are disposed on the side away from each other, while the second engagement grooves 32 and 32 are close to each other. Is arranged.

第１と第２の係合溝３１，３２の奥面同士の間隔は、保冷材４０（図４参照）の平面形状の短辺より大きくなっている。また、第１と第２の係合突壁３１Ｔ，３２Ｔの先端面同士の間隔は、保冷材４０の平面形状の短辺より小さくなっている。さらに、第１の係合溝３１の奥面に対する第１の係合突壁３１Ｔの張り出し量は、第２の係合溝３２の奥面に対する第２の係合突壁３２Ｔの張り出し量より大きくなっている。   The distance between the back surfaces of the first and second engagement grooves 31 and 32 is larger than the short side of the planar shape of the cold insulator 40 (see FIG. 4). Moreover, the space | interval of the tip surfaces of the 1st and 2nd engagement protrusion walls 31T and 32T is smaller than the short side of the planar shape of the cold insulating material 40. FIG. Further, the amount of protrusion of the first engagement protrusion wall 31T with respect to the back surface of the first engagement groove 31 is larger than the amount of protrusion of the second engagement protrusion wall 32T with respect to the back surface of the second engagement groove 32. It has become.

図２（Ｂ）に示すように、第１の係合溝３１の奥面には、その長手方向の両側端部に、本発明に係る溝内凹部１５，１５が形成されている。各溝内凹部１５は、第１と第２の係合溝３１，３２の対向方向からみて断面形状が四角形になっている。また、図３（Ａ）に示すように、溝内凹部１５における１対の内側面は、第１の係合突壁３１Ｔと底壁１２Ｂとの対向面と面一になっており、溝内凹部１５の他の１つの内側面は、扁平凹部１３の内側面１３Ｔと面一になっており、溝内凹部１５の残りの内側面は、扁平凹部１３の内側面１３Ｔと平行になっている。   As shown in FIG. 2 (B), in-groove recesses 15 and 15 according to the present invention are formed on the inner surface of the first engagement groove 31 at both end portions in the longitudinal direction. Each in-groove recess 15 has a quadrangular cross-sectional shape when viewed from the opposing direction of the first and second engaging grooves 31 and 32. Further, as shown in FIG. 3A, the pair of inner side surfaces in the in-groove recess 15 are flush with the opposing surfaces of the first engagement protrusion wall 31T and the bottom wall 12B, The other inner surface of the recess 15 is flush with the inner surface 13T of the flat recess 13, and the remaining inner surface of the groove recess 15 is parallel to the inner surface 13T of the flat recess 13. .

図３（Ｂ）に示すように、各溝内凹部１５には角柱スポンジ２０が取り付けられている。角柱スポンジ２０は、第１の係合溝３１，３２の対向に延びた角柱状になっている。そして、角柱スポンジ２０の一端部が溝内凹部１５内に受容されると共に、角柱スポンジ２０の他端部が溝内凹部１５から突出している。詳細には、角柱スポンジ２０の断面は正方形になっており、その正方形の一辺は、溝内凹部１５のうち第１の係合溝３１の長手方向を向いた１対の内側面の間隔と同じになっている。そして、それら溝内凹部１５の１対の内側面に角柱スポンジ２０が摩擦係止して抜け止めされている。なお、角柱スポンジ２０の一端面に接着剤にて溝内凹部１５の奥面に固定してもよい。   As shown in FIG. 3B, a prismatic sponge 20 is attached to each recess 15 in the groove. The prismatic sponge 20 has a prismatic shape extending in opposition to the first engaging grooves 31 and 32. One end of the prismatic sponge 20 is received in the recess 15 in the groove, and the other end of the prismatic sponge 20 protrudes from the recess 15 in the groove. Specifically, the square sponge 20 has a square cross section, and one side of the square is the same as the interval between the pair of inner side surfaces of the in-groove recess 15 facing the longitudinal direction of the first engagement groove 31. It has become. The prismatic sponge 20 is frictionally locked to a pair of inner surfaces of the recesses 15 in the groove to prevent the recesses 15 from coming off. In addition, you may fix to the back surface of the recessed part 15 in a groove | channel with the adhesive agent at the one end surface of the prismatic sponge 20. FIG.

また、角柱スポンジ２０の断面形状である正方形の一辺は、第１の係合溝３１の幅方向で対向した溝内凹部１５における１対の内側面の間隔より僅かに小さくなっている。その結果、角柱スポンジ２０と溝内凹部１５の内側面との間には、隙間２０Ｓが形成されている。そして、この隙間２０Ｓにより、角柱スポンジ２０の圧縮変形に伴った角柱スポンジ２０の側面の膨出が許容されている。また、扁平凹部１３のうち１対の溝内凹部１５，１５に挟まれた部分は、本発明の「ストッパ」に相当する溝奥壁１４になっている。   Further, one side of the square which is the cross-sectional shape of the prismatic sponge 20 is slightly smaller than the distance between the pair of inner side surfaces in the in-groove recess 15 opposed in the width direction of the first engagement groove 31. As a result, a gap 20 </ b> S is formed between the prismatic sponge 20 and the inner surface of the in-groove recess 15. The gap 20 </ b> S allows the side surface of the prismatic sponge 20 to bulge along with the compression deformation of the prismatic sponge 20. Further, a portion of the flat recess 13 sandwiched between the pair of in-groove recesses 15, 15 is a groove back wall 14 corresponding to the “stopper” of the present invention.

図２（Ａ）に示すように、第２の係合溝３２の長手方向の中央には、取り出し操作孔１６が形成されている。取り出し操作孔１６は、一般的な成人の人差し指の幅より若干広い幅で第２の係合突壁３２Ｔを切除しかつその切除部分と連続するように第２の係合溝３２の奥面を陥没させた構造になっている。そして、取り出し操作孔１６は、第２の係合溝３２の奥面と蓋体１２の内面１２Ｎとに開放し、ここに指を挿入して扁平凹部１３内の保冷材４０に指を掛けることができる。   As shown in FIG. 2A, a take-out operation hole 16 is formed in the center of the second engagement groove 32 in the longitudinal direction. The take-out operation hole 16 cuts the second engagement protrusion wall 32T with a width slightly wider than the width of a general adult index finger, and the back surface of the second engagement groove 32 so as to be continuous with the cut portion. It has a depressed structure. The take-out operation hole 16 is opened to the inner surface 12N of the lid 12 and the back surface of the second engagement groove 32, and a finger is inserted therein to hang the finger on the cold insulating material 40 in the flat recess 13. Can do.

上記した角柱スポンジ２０を除く蓋体１２及びボックス本体１１は、本発明に係る「保冷室の壁体」に相当する。そして、これら蓋体１２及びボックス本体１１は、例えば、ポリプロピレンを発泡倍率５〜４５倍（より具体的には、２０倍）で発泡させて独立発泡構造（即ち、発泡した複数の粒体を結合させた構造）とした発泡材で構成されている。一方、角柱スポンジ２０は、本発明に係る「弾性部材」に相当する。その角柱スポンジ２０は、例えば、ポリエチレンを発泡倍率１８〜６０倍（より具体的には、５０倍）で発泡させて連続発泡構造（所謂、スポンジ構造）とした発泡材で構成されている。なお、クーラーボックス１０全体は、本発明の「保冷室」に相当する。   The lid body 12 and the box body 11 excluding the above-described prismatic sponge 20 correspond to the “wall body of the cold insulation chamber” according to the present invention. The lid body 12 and the box body 11 are made of, for example, polypropylene foamed at a foaming ratio of 5 to 45 times (more specifically, 20 times) to form an independent foam structure (that is, a plurality of foamed particles are combined). The structure is made of a foam material. On the other hand, the prismatic sponge 20 corresponds to an “elastic member” according to the present invention. The prismatic sponge 20 is made of, for example, a foam material in which polyethylene is foamed at an expansion ratio of 18 to 60 times (more specifically, 50 times) to form a continuous foam structure (so-called sponge structure). In addition, the whole cooler box 10 is corresponded to the "cold room" of this invention.

本実施形態のクーラーボックス１０の構成に関する説明は以上である。次に、クーラーボックス１０の作用効果について説明する。   The description regarding the structure of the cooler box 10 of this embodiment is above. Next, the effect of the cooler box 10 will be described.

蓋体１２に保冷材４０を取り付けるには、図４（Ａ）に示すように、蓋体１２の内面１２Ｎを上方に向けた状態にして、保冷材４０の一方の側縁部４２を、開口１３Ｋから第１の係合溝３１内に押し込む。すると、第１の係合溝３１内の１対の角柱スポンジ２０，２０が保冷材４０に押されて圧縮変形する。   In order to attach the cold insulation material 40 to the lid body 12, as shown in FIG. 4A, the inner surface 12N of the lid body 12 is directed upward, and one side edge portion 42 of the cold insulation material 40 is opened. It is pushed into the first engagement groove 31 from 13K. Then, the pair of prismatic sponges 20 and 20 in the first engagement groove 31 are pushed by the cold insulation material 40 and are compressed and deformed.

ここで、第１の係合溝３１の奥面には１対の溝内凹部１５，１５が備えられ、それら溝内凹部１５の奥行き分だけ各角柱スポンジ２０が長くなっているので、角柱スポンジ２０の全長に対する変形量の割合が小さく抑えられる。これにより、角柱スポンジ２０の塑性変形が防がれる。また、保冷材４０が第１の係合溝３１内に必要以上に押し込まれそうになったときには、第１の係合溝３１内の溝奥壁１４が保冷材４０に当接するので、これにより角柱スポンジ２０の変形量が規制され、この点によっても、角柱スポンジ２０の塑性変形が防がれる。また、その溝奥壁１４は、第１の係合突壁３１Ｔと底壁１２Ｂとの間を連絡して補強する役割も果たしている。   Here, a pair of in-groove recesses 15 and 15 are provided on the inner surface of the first engagement groove 31, and each prism sponge 20 is elongated by the depth of the in-groove recess 15. The ratio of the deformation amount with respect to the total length of 20 can be kept small. Thereby, the plastic deformation of the prismatic sponge 20 is prevented. Further, when the cold insulation material 40 is about to be pushed into the first engagement groove 31 more than necessary, the groove inner wall 14 in the first engagement groove 31 abuts the cold insulation material 40, thereby The deformation amount of the prismatic sponge 20 is restricted, and this point also prevents plastic deformation of the prismatic sponge 20. The groove back wall 14 also plays a role of connecting and reinforcing the first engaging protruding wall 31T and the bottom wall 12B.

上記のように、保冷材４０の一方の側縁部４２を第１の係合溝３１に押し込むことで、保冷材４０の他方の側縁部４２が第２の係合突壁３２Ｔの先端より開口１３Ｋの内側に位置したら、図４（Ｂ）に示すように、保冷材４０を回動させて保冷材４０全体を扁平凹部１３の底壁１２Ｂに押し付ける。そして、保冷材４０の他方の側縁部４２を第２の係合溝３２に突き合わせた状態で保冷材４０から手を離す。すると、図４（Ｃ）に示すように、角柱スポンジ２０の弾発力によって保冷材４０の他方の側縁部４２が第２の係合溝３２に嵌る。これにより、保冷材４０の１対の側縁部４２，４２が、第１と第２の係合溝３１，３２に係合した状態に保持される。このとき、角柱スポンジ２０は自然状態（弾性変形していない状態）に戻り、角柱スポンジ２０の先端面が保冷材４０の側面に隣接した状態になる。以上により、蓋体１２への保冷材４０の取り付け作業が完了する。   As described above, by pushing one side edge portion 42 of the cold insulation material 40 into the first engagement groove 31, the other side edge portion 42 of the cold insulation material 40 is moved from the tip of the second engagement protrusion wall 32T. When positioned inside the opening 13K, as shown in FIG. 4B, the cold insulation material 40 is rotated to press the entire cold insulation material 40 against the bottom wall 12B of the flat recess 13. Then, the hand is released from the cold insulation material 40 with the other side edge 42 of the cold insulation material 40 butted against the second engagement groove 32. Then, as shown in FIG. 4C, the other side edge portion 42 of the cold insulating material 40 is fitted into the second engagement groove 32 by the elastic force of the prismatic sponge 20. Accordingly, the pair of side edge portions 42 and 42 of the cold insulating material 40 are held in a state of being engaged with the first and second engagement grooves 31 and 32. At this time, the prismatic sponge 20 returns to a natural state (a state where it is not elastically deformed), and the tip surface of the prismatic sponge 20 is adjacent to the side surface of the cold insulator 40. Thus, the operation for attaching the cold insulation material 40 to the lid 12 is completed.

保冷材４０の取り付けが完了した蓋体１２は、上下に裏返してボックス本体１１に装着すればよい。すると、クーラーボックス１０の内側空間が密閉されると共に、保冷材４０によってクーラーボックス１０の内側空間が冷えた状態に維持される。このとき、保冷材４０は、第１と第２の係合突壁３１Ｔ，３２Ｔによって下方から支持され、扁平凹部１３からの離脱が防がれる。   The lid 12 on which the cold insulation material 40 has been attached may be turned upside down and attached to the box body 11. Then, the inner space of the cooler box 10 is sealed, and the inner space of the cooler box 10 is maintained in a cooled state by the cold insulating material 40. At this time, the cold insulating material 40 is supported from below by the first and second engagement protrusion walls 31T and 32T, and is prevented from being detached from the flat recess 13.

また、保冷材４０を再使用するには、蓋体１２から取り外して冷蔵庫で冷却すればよい。そこで、保冷材４０を蓋体１２から取り外すには、蓋体１２をボックス本体１１から外して内面１２Ｎを上に向ける。そして、取り出し操作孔１６に指を突入させて保冷材４０の側縁部４２に引っ掛け、第１の係合溝３１側に押圧する。これにより、保冷材４０の側縁部４２が第２の係合溝３２から離脱したら、その保冷材４０を起こして開口１３Ｋの外側に引き抜けばよい。   Moreover, what is necessary is just to remove from the cover body 12 and to cool with the refrigerator, in order to reuse the cold insulating material 40. FIG. Therefore, in order to remove the cold insulating material 40 from the lid body 12, the lid body 12 is removed from the box body 11, and the inner surface 12N is directed upward. Then, a finger is inserted into the take-out operation hole 16, hooked on the side edge portion 42 of the cold insulating material 40, and pressed toward the first engagement groove 31. Thus, when the side edge portion 42 of the cold insulating material 40 is detached from the second engagement groove 32, the cold insulating material 40 may be raised and pulled out to the outside of the opening 13K.

このように本実施形態の構成によれば、クーラーボックス１０の壁体であるボックス本体１１及び蓋体１２より弾性が高い角柱スポンジ２０を伸縮させて保冷材４０の着脱を行うことができるので、従来のより着脱操作が容易になる。また、蓋体１２に保冷材４０が取り付けられると、取り付け過程で弾性変形していた角柱スポンジ２０が自然状態に戻るので、角柱スポンジ２０の弾性の低下を防ぐことができる。さらに、保冷材４０が取り付けられた後は、角柱スポンジ２０の先端面が保冷材４０の側面に隣接した状態になるので、保冷材４０のガタも防止することができる。なお、ガタの防止機能を高めるために、保冷材４０が取り付けられた状態で角柱スポンジ２０が弾性変形した状態に維持され、その弾発力で保冷材４０の側縁部４２が第２の係合溝３２の奥面に押し付けられるように構成してもよい。   As described above, according to the configuration of the present embodiment, the cold insulator 40 can be attached and detached by expanding and contracting the rectangular columnar sponge 20 having higher elasticity than the box body 11 and the lid body 12 which are the walls of the cooler box 10. The attachment / detachment operation becomes easier than conventional. In addition, when the cold insulator 40 is attached to the lid 12, the prismatic sponge 20 that has been elastically deformed during the attachment process returns to a natural state, so that a decrease in the elasticity of the prismatic sponge 20 can be prevented. Furthermore, since the front end surface of the prismatic sponge 20 is adjacent to the side surface of the cold insulation material 40 after the cold insulation material 40 is attached, the play of the cold insulation material 40 can be prevented. In addition, in order to improve the play prevention function, the prismatic sponge 20 is maintained in an elastically deformed state with the cold insulator 40 attached, and the side edge portion 42 of the cold insulator 40 is secondly engaged by its elastic force. You may comprise so that it may be pressed on the inner surface of the joint groove 32.

また、本実施形態では、ボックス本体１１及び蓋体１２と角柱スポンジ２０を構成する発泡材が、共にポリオレフィン系樹脂であるので、クーラーボックス１０を溶かして原材料に戻すリサイクルを行う場合に、ボックス本体１１、蓋体１２及び角柱スポンジ２０を分別する必要がなく、リサイクルが容易になる。しかも、ポリオレフィン系樹脂の中でも、ボックス本体１１及び蓋体１２を構成する発泡材は、ポリプロピレンであるので剛性が高くなり、この点においても保冷材４０の保持が安定する。これに対し、角柱スポンジ２０を構成する発泡材は、ポリエチレンであるので弾性が高くなり、この点においても、保冷材４０の着脱操作が容易になる。さらに、本実施形態のクーラーボックス１０では、断熱性が必要とされるボックス本体１１及び蓋体１２を構成する発泡材を、断熱性に優れた独立発泡構造とする一方、断熱性の必要性が低い角柱スポンジ２０を構成する発泡材を、安価に製造可能な連続発泡構造としたので、クーラーボックス１０の保冷性を高くすることができると共に、製造コストを抑えることができる。   Moreover, in this embodiment, since the foam material which comprises the box main body 11 and the cover body 12 and the prismatic sponge 20 is all polyolefin resin, when recycling which melt | dissolves the cooler box 10 and returns it to a raw material, a box main body is performed. 11, it is not necessary to separate the lid body 12 and the prismatic sponge 20, and recycling becomes easy. In addition, among the polyolefin-based resins, the foam material constituting the box body 11 and the lid body 12 is polypropylene, so that the rigidity is high, and also in this respect, the holding of the cold insulating material 40 is stable. On the other hand, since the foam material constituting the prismatic sponge 20 is polyethylene, the elasticity is high, and also in this respect, the operation for attaching and detaching the cold insulating material 40 is facilitated. Furthermore, in the cooler box 10 of this embodiment, while the foam material which comprises the box main body 11 and the cover body 12 in which heat insulation is required is made into the independent foam structure excellent in heat insulation, the necessity of heat insulation exists. Since the foam material constituting the low prismatic sponge 20 has a continuous foam structure that can be manufactured at low cost, the coolability of the cooler box 10 can be increased and the manufacturing cost can be suppressed.

［第２実施形態］
本実施形態は、図５に示されており、角柱スポンジ２０Ｖ及び第１の係合溝３１内の構造のみが第１実施形態と異なる。即ち、図５（Ａ）に示すように、本実施形態の第１の係合溝３１の奥面３１Ｖは、全体が平坦面になっている。また、図５（Ｂ）に示すように、角柱スポンジ２０Ｖは、奥面３１Ｖの長手方向全体の亘って延びた角柱構造となっている。そして、保冷材４０（図４参照）の側縁部４２を第１の係合溝３１に挿入すると、その側縁部４２全体が角柱スポンジ２０Ｖの側面全体に当接して、角柱スポンジ２０Ｖが圧縮変形し、その弾発力で保冷材４０が第２の係合溝３２側に押し戻されて、扁平凹部１３内に保冷材４０が保持される。この本実施形態の構成によっても、従来のより保冷材４０の着脱操作が容易になり、保冷材４０のガタつきが抑えられる。 [Second Embodiment]
This embodiment is shown in FIG. 5, and only the structure in the prismatic sponge 20V and the first engagement groove 31 is different from the first embodiment. That is, as shown in FIG. 5A, the entire inner surface 31V of the first engagement groove 31 of the present embodiment is a flat surface. Further, as shown in FIG. 5B, the prismatic sponge 20V has a prismatic structure extending over the entire longitudinal direction of the inner surface 31V. Then, when the side edge portion 42 of the cold insulating material 40 (see FIG. 4) is inserted into the first engagement groove 31, the entire side edge portion 42 comes into contact with the entire side surface of the prismatic sponge 20V, and the prismatic sponge 20V is compressed. The cold insulating material 40 is pushed back to the second engagement groove 32 side by the elastic force, and the cold insulating material 40 is held in the flat recess 13. Also according to the configuration of the present embodiment, the refrigeration material 40 can be attached and detached more easily than the conventional one, and the play of the refrigeration material 40 can be suppressed.

［他の実施形態］
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。 [Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

（１）前記第１及び第２の実施形態では、本発明に係る「保冷室の壁体」としての蓋体１２に扁平凹部１３を設けて、その扁平凹部１３の対向面に第１及び第２の係合溝３１，３２が形成されていたが、本発明に係る「保冷室の壁体」の内面から１対の突壁を突出させて対向配置し、それら１対の突壁の対向面に第１及び第２の係合溝を形成してもよい。   (1) In the first and second embodiments, the flat concave portion 13 is provided in the lid body 12 as the “wall body of the cold insulation chamber” according to the present invention, and the first and first surfaces are opposed to the flat concave portion 13. The two engaging grooves 31 and 32 are formed, but a pair of projecting walls are protruded from the inner surface of the “wall body of the cold storage chamber” according to the present invention and are opposed to each other. First and second engagement grooves may be formed on the surface.

（２）前記第１及び第２の実施形態では、本発明に係る「弾性部材」としての角柱スポンジ２０，２０Ｖが、ポリエチレンの発泡材で構成されていたが、本発明に係る「弾性部材」は、ポリエチレン以外の樹脂（例えば、ポリプロピレン、ポリウレタン、ポリスチレン）の発泡材で構成してもよいし、発泡材以外の例えば、コイルバネ、板バネ、ゴム等の部材で構成されていてもよい。   (2) In the first and second embodiments, the prismatic sponges 20 and 20V as the “elastic members” according to the present invention are made of polyethylene foam material, but the “elastic members” according to the present invention. May be made of a foamed material other than polyethylene (eg, polypropylene, polyurethane, polystyrene), or may be made of a material other than the foamed material, such as a coil spring, a leaf spring, or rubber.

（３）前記第１及び第２の実施形態では、本発明に係る「保冷室の壁体」としての蓋体１２及びボックス本体１１は、ポリプロピレンの発泡材であったが、本発明に係る「保冷室の壁体」は、ポリプロピレン以外の樹脂（例えば、ポリエチレン、ポリスチレン）の発泡材であってもよいし、例えば樹脂の成形品であってもよい。   (3) In the first and second embodiments, the lid body 12 and the box main body 11 as the “wall body of the cold insulation chamber” according to the present invention are made of polypropylene foam. The “cold chamber wall” may be a foamed material of resin other than polypropylene (for example, polyethylene or polystyrene), or may be a molded product of resin, for example.

本発明に係る第１の実施形態にクーラーボックスの斜視図The perspective view of a cooler box in a 1st embodiment concerning the present invention. 蓋体の斜視図Perspective view of lid 蓋体の斜視図Perspective view of lid 蓋体に保冷材を取り付ける手順を示した斜視図The perspective view which showed the procedure which attaches a cold insulating material to a cover body 第２実施形態のクーラーボックスにおける蓋体の斜視図The perspective view of the lid in the cooler box of a 2nd embodiment.

符号の説明Explanation of symbols

１０ クーラーボックス
１１ ボックス本体
１２ 蓋体
１３ 扁平凹部
１３Ｋ 開口（溝間開口）
１４ 溝奥壁（ストッパ）
１５ 溝内凹部
２０，２０Ｖ 角柱スポンジ（弾性部材）
３１ 第１の係合溝
３２ 第２の係合溝
４０ 保冷材
４２ 側縁部
５０ 保冷材保持機構 10 Cooler box 11 Box body 12 Lid 13 Flat recess 13K Opening (opening between grooves)
14 Groove wall (stopper)
15 Recess in groove 20,20V Square column sponge (elastic member)
31 1st engaging groove 32 2nd engaging groove 40 Cold insulator 42 Side edge part 50 Cold insulator holding mechanism

Claims (6)

扁平な直方体形状の保冷材を、保冷室の壁体の内面に着脱可能に取り付けるための保冷材保持機構において、
前記保冷材の１対の側縁部を受容可能な第１と第２の係合溝を前記壁体の内面に対向配置して設けると共に、前記壁体より弾性が高い弾性部材を前記第１の係合溝内に設け、
前記第１と第２の係合溝の間の溝間開口を通して前記保冷材の一方の前記側縁部を前記第１の係合溝内に押し込むと、前記弾性部材の弾発力によって前記保冷材が押し戻されて前記他方の側縁部が前記第２の係合溝に嵌るようにしたことを特徴とする保冷材保持機構。 In the cold insulation material holding mechanism for detachably attaching the flat rectangular parallelepiped shape cold insulation material to the inner surface of the wall of the cold insulation chamber,
The first and second engaging grooves that can receive a pair of side edges of the cold insulator are disposed opposite to the inner surface of the wall body, and an elastic member having higher elasticity than the wall body is provided in the first wall. disposed within the engaging groove to,
When the one side edge of the cold insulator is pushed into the first engagement groove through the inter-groove opening between the first and second engagement grooves, the cold insulation is caused by the elastic force of the elastic member. A cold insulating material holding mechanism, wherein the material is pushed back so that the other side edge fits into the second engagement groove. 前記保冷室の前記壁体は、ポリオレフィン系樹脂を５〜４５倍の発泡倍率で発泡させた発泡材で構成され、
前記弾性部材は、ポリオレフィン系樹脂を１８〜６０倍の発泡倍率で発泡させた発泡材で構成されていることを特徴とする請求項１に記載の保冷材保持機構。 The wall of the cold room is made of a foamed material obtained by foaming a polyolefin resin at a foaming ratio of 5 to 45 times,
The cold insulation material holding mechanism according to claim 1, wherein the elastic member is made of a foamed material obtained by foaming a polyolefin resin at a foaming ratio of 18 to 60 times. 前記保冷室の前記壁体は、ポリプロピレンの発泡材で構成され、前記弾性部材は、ポリエチレンの発泡材で構成されていることを特徴とする請求項２に記載の保冷材保持機構。   The cold insulation material holding mechanism according to claim 2, wherein the wall body of the cold insulation chamber is made of a polypropylene foam material, and the elastic member is made of a polyethylene foam material. 前記弾性部材は、前記第１と第２の係合溝の対向方向に延び、
前記第１の係合溝の奥面には、前記弾性部材の一端部を受容して他端部を前記第１の係合溝の奥面から突出した状態にするための溝内凹部が形成されていることを特徴とする請求項１乃至３の何れかに記載の保冷材保持機構。 The elastic member extends in the opposing direction of the first and second engaging grooves;
A recess in the groove for receiving one end of the elastic member and projecting the other end from the back surface of the first engagement groove is formed on the back surface of the first engagement groove. The cold insulation material holding mechanism according to any one of claims 1 to 3, wherein the cold insulation material holding mechanism is provided. 前記第１の係合溝の内部には、前記保冷材を押し込んだときに当接して、前記弾性部材の変形量を規制するストッパが備えられていることを特徴とする請求項１乃至４の何れかに記載の保冷材保持機構。   5. The stopper according to claim 1, wherein a stopper is provided inside the first engaging groove to contact the cold insulator when the cold insulating material is pushed in, and to restrict a deformation amount of the elastic member. The cold insulator holding mechanism according to any one of the above. 前記請求項１乃至５の何れかに記載の保冷材保持機構を備えたことを特徴とするクーラーボックス。   A cooler box comprising the cold insulation material holding mechanism according to any one of claims 1 to 5.
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