JP7303012B2 - Insulated containers and containers with lids - Google Patents

Insulated containers and containers with lids Download PDF

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Publication number
JP7303012B2
JP7303012B2 JP2019075618A JP2019075618A JP7303012B2 JP 7303012 B2 JP7303012 B2 JP 7303012B2 JP 2019075618 A JP2019075618 A JP 2019075618A JP 2019075618 A JP2019075618 A JP 2019075618A JP 7303012 B2 JP7303012 B2 JP 7303012B2
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container
joint end
end portion
insulated
heat
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JP2020171538A (en
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高広 丸山
茂 藤谷
翼 伊石
圭太 馬場
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Thermos KK
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Thermos KK
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Priority to TW109109696A priority patent/TW202037540A/en
Priority to KR1020200040592A priority patent/KR20200120520A/en
Priority to CN202010259280.3A priority patent/CN111806841B/en
Priority to CN202311149846.7A priority patent/CN117163444A/en
Publication of JP2020171538A publication Critical patent/JP2020171538A/en
Priority to JP2023102622A priority patent/JP7539530B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3837—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container in the form of a bottle, jar or like container
    • B65D81/3841—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container in the form of a bottle, jar or like container formed with double walls, i.e. hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J41/00—Thermally-insulated vessels, e.g. flasks, jugs, jars
    • A47J41/02—Vacuum-jacket vessels, e.g. vacuum bottles
    • A47J41/022—Constructional details of the elements forming vacuum space
    • A47J41/028—Constructional details of the elements forming vacuum space made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/0442—Collars or rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Food Science & Technology (AREA)
  • Packages (AREA)
  • Thermally Insulated Containers For Foods (AREA)

Description

本発明は、断熱容器及び蓋付き容器に関する。 The present invention relates to insulated containers and containers with lids.

例えば、一端が開口した金属製の外容器及び内容器を有して、外容器の内側に内容器を収容した状態で互いの開口端同士が接合されると共に、外容器と内容器との間に真空断熱層が設けられた断熱容器がある。このような断熱容器は、保温・保冷機能を有する水筒やマグなどの飲料用容器、保温機能を有するフードコンテナや調理器などに広く利用されている。 For example, having a metal outer container and an inner container with one end open, the open ends are joined together with the inner container housed inside the outer container, and the outer container and the inner container are joined together. There is an insulated container provided with a vacuum insulation layer. Such heat-insulating containers are widely used for beverage containers such as water bottles and mugs having heat and cold insulation functions, and food containers and cookers having heat insulation functions.

ところで、上述した断熱容器では、外容器と内容器との互いの開口端同士を突き合わせた状態で、この突き合わせ部分を溶接により接合している（例えば、下記特許文献１，２を参照。）。 By the way, in the heat-insulated container described above, the opening ends of the outer container and the inner container are butted against each other, and the butted portions are joined by welding (for example, see Patent Documents 1 and 2 below).

具体的に、下記特許文献１に記載の断熱容器では、外容器と内容器との上端部において、外容器の内面と内容器の外面とを突き合わせた状態で、互いの開口端同士を溶接（いわゆる拝み溶接）により接合している。 Specifically, in the heat insulating container described in Patent Document 1 below, at the upper ends of the outer container and the inner container, the open ends of the outer container and the inner container are welded ( It is joined by so-called back welding).

一方、下記特許文献２に記載の断熱容器では、内容器の上端部を外側に向かって湾曲させた状態で、外容器の開口端と内容器の開口端とを突き合わせた状態で、互いの開口端同士を溶接により接合している。 On the other hand, in the heat insulating container described in Patent Document 2 below, the upper end of the inner container is curved outward, and the open end of the outer container and the open end of the inner container are butted against each other. The ends are joined by welding.

特開平１１－２２７７６４号公報JP-A-11-227764 特開２００２－２８２１３７号公報JP-A-2002-282137

しかしながら、上述した特許文献１に記載の断熱容器では、上端部が薄いため、直接口をつけて飲料を飲む場合、口当たりが悪くなり、良好な飲み心地が得られなくなる。一方、口当たりが良好な飲み口を得るために、飲み口を形成する中栓部材を断熱容器の上端部に取り付けた場合、部品点数の増加により製造コストの上昇を招くことになる。 However, since the heat-insulating container described in Patent Document 1 has a thin upper end portion, when the beverage is directly put into the mouth and drunk, the mouthfeel of the beverage becomes poor, making it difficult to obtain a good drinking comfort. On the other hand, if an inner plug member forming the mouthpiece is attached to the upper end of the heat-insulated container in order to obtain a mouthfeel with a pleasant mouthfeel, the number of parts increases, resulting in an increase in manufacturing cost.

また、断熱容器の上部開口部を閉塞する蓋体を取り付けた場合、蓋体にパッキンを取り付けて断熱容器の上端部に当接されたパッキンを介して断熱容器と蓋体との間を止水することが行われている。しかしながら、断熱容器の上端部にパッキンを当接させた場合、パッキンを損傷させる可能性があり、このパッキンを交換する頻度が増えるなどの耐久性の問題が発生してしまう。 In addition, when a lid is attached to close the upper opening of the heat insulating container, a packing is attached to the lid and water is stopped between the heat insulating container and the lid through the packing that is in contact with the upper end of the heat insulating container. is being done. However, when the packing is brought into contact with the upper end portion of the heat-insulating container, the packing may be damaged, resulting in durability problems such as an increase in the frequency of replacement of the packing.

一方、上述した特許文献２に記載の断熱容器では、外容器の開口端と内容器の開口端とを突き合わせる際に、互いの突合せ面積が小さくなることによって、位置ズレが生じ易くなる。また、互いの突合せ面積が小さくなると、レーザー溶接による溶け込み量では接合が不十分となるおそれがある。このため、溶け込み量の大きいプラズマ溶接が用いられるが、溶接ビードが大きくなってしまうため、製造工程の複雑化や、製造コストの上昇を招くことになる。さらに、外容器の開口端と内容器の開口端との突合せ面積を大きくするためには、外容器及び内容器の板厚を厚くせざるを得ず、外容器及び内容器の板厚を薄くして、断熱容器の軽量化を図ることが困難となる。 On the other hand, in the heat-insulated container described in Patent Document 2, when the open end of the outer container and the open end of the inner container are brought into contact with each other, the mutual contact area becomes small, so positional deviation is likely to occur. In addition, when the mutual butt area becomes small, there is a possibility that the amount of penetration by laser welding will be insufficient for joining. For this reason, plasma welding with a large amount of penetration is used, but the weld bead becomes large, which complicates the manufacturing process and increases the manufacturing cost. Furthermore, in order to increase the abutment area between the open end of the outer container and the open end of the inner container, the plate thickness of the outer container and the inner container must be increased. As a result, it becomes difficult to reduce the weight of the heat insulating container.

本発明は、このような従来の事情に鑑みて提案されたものであり、外容器と内容器との接合端部を精度良く接合することができ、なお且つ、仕上がりの良い接合端部を得ることを可能とした断熱容器、並びに、そのような断熱容器を備えた蓋付き容器を提供することを目的とする。 SUMMARY OF THE INVENTION The present invention has been proposed in view of such conventional circumstances. It is an object of the present invention to provide a heat-insulating container that enables the heat-insulating container and a lidded container provided with such a heat-insulating container.

上記目的を達成するために、本発明は以下の手段を提供する。
〔１〕 一端が開口した金属製の外容器及び内容器を有して、前記外容器の内側に前記内容器を収容した状態で互いに接合されると共に、前記外容器と前記内容器との間に真空断熱層が設けられた断熱容器であって、
前記外容器の開口端を上方に向かって延長させたストレート部を含む外側接合端部と、
前記内容器の上端から外向きに折り返しながら、前記内容器の開口端を下方に向かって折り曲げたカーブ部とを含む内側接合端部とを備え、
前記カーブ部は、前記内容器の開口端が前記外側接合端部の内面と前記内側接合端部の外面との間に位置して、前記外側接合端部の内面と前記内側接合端部の外面とは非接触となるように折り曲げられ、
前記ストレート部の内面と前記カーブ部の外面とが突き合わされた状態で、前記外側接合端部と前記内側接合端部との突合部が接合されていることを特徴とする断熱容器。
〔２〕 前記内側接合端部は、前記カーブ部の外面の一部を平坦化した平坦部を含み、
前記ストレート部の内面と前記平坦部とが突き合わされた状態で、前記外側接合端部と前記内側接合端部との突合部が接合されていることを特徴とする前記〔１〕に記載の断熱容器。
〔３〕 前記内容器の内面に前記突合部に向かって漸次拡径されたテーパー部が設けられていることを特徴とする前記〔１〕又は〔２〕に記載の断熱容器。
〔４〕 前記〔１〕～〔３〕の何れか一項に記載の断熱容器と、
前記断熱容器に対して着脱自在に取り付けられる蓋体とを備えることを特徴とする蓋付き容器。 In order to achieve the above object, the present invention provides the following means.
[1] having a metal outer container and an inner container with one end open, and being joined together with the inner container housed inside the outer container, and between the outer container and the inner container; A heat-insulating container having a vacuum heat-insulating layer in the
an outer joint end portion including a straight portion extending upward from the open end of the outer container;
an inner joint end portion including a curved portion formed by bending the open end of the inner container downward while folding outward from the upper end of the inner container;
The curved portion is such that the open end of the inner container is positioned between the inner surface of the outer joint end portion and the outer surface of the inner joint end portion, and the curved portion is positioned between the inner surface of the outer joint end portion and the outer surface of the inner joint end portion. is bent so as to be out of contact with the
A heat-insulated container, wherein the abutment portion between the outer joint end portion and the inner joint end portion is joined in a state where the inner surface of the straight portion and the outer surface of the curved portion are butted against each other.
[2] the inner joint end includes a flat portion obtained by flattening a part of the outer surface of the curved portion;
The heat insulation according to [1], wherein the abutment portion between the outer joint end portion and the inner joint end portion is joined in a state where the inner surface of the straight portion and the flat portion are butted against each other. container.
[3] The heat insulating container according to [1] or [2], wherein the inner surface of the inner container is provided with a tapered portion whose diameter gradually increases toward the abutment portion.
[4] the insulated container according to any one of [1] to [3];
A container with a lid, comprising: a lid detachably attached to the heat insulating container.

以上のように、本発明によれば、外容器と内容器との接合端部を精度良く接合することができ、なお且つ、仕上がりの良い接合端部を得ることを可能とした断熱容器、並びに、そのような断熱容器を備えた蓋付き容器を提供することが可能である。 As described above, according to the present invention, there is provided a heat-insulating container capable of accurately joining the joint end portions of the outer container and the inner container and obtaining a well-finished joint end portion, and , it is possible to provide a lidded container with such an insulated container.

本発明の一実施形態に係る蓋付き容器の外観を示す斜視図である。1 is a perspective view showing the appearance of a lidded container according to an embodiment of the present invention; FIG. 図１に示す蓋付き容器の構成を示す断面図である。FIG. 2 is a cross-sectional view showing the configuration of the lidded container shown in FIG. 1; 図１に示す蓋付き容器が備える断熱容器の構成を示す断面図である。FIG. 2 is a cross-sectional view showing the structure of a heat insulating container included in the lidded container shown in FIG. 1; 図３中の囲み部分Ａに示す断熱容器の一部を拡大して示す断面図である。4 is a cross-sectional view showing an enlarged part of the heat insulating container shown in the enclosing part A in FIG. 3. FIG.

以下、本発明の実施形態について、図面を参照して詳細に説明する。
本発明の一実施形態として、例えば図１～図４に示す蓋付き容器１００について説明する。なお、図１は、蓋付き容器１００の外観を示す斜視図である。図２は、蓋付き容器１００の構成を示す断面図である。図３は、蓋付き容器１００が備える断熱容器１の構成を示す断面図である。図４は、図３中の囲み部分Ａに示す断熱容器１の一部を拡大して示す断面図である。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As an embodiment of the present invention, for example, a lidded container 100 shown in FIGS. 1 to 4 will be described. In addition, FIG. 1 is a perspective view showing the appearance of the lidded container 100. As shown in FIG. FIG. 2 is a cross-sectional view showing the configuration of the lidded container 100. As shown in FIG. FIG. 3 is a cross-sectional view showing the configuration of the heat insulating container 1 included in the lidded container 100. As shown in FIG. FIG. 4 is a cross-sectional view showing an enlarged part of the heat insulating container 1 shown in the enclosing portion A in FIG.

本実施形態の蓋付き容器１００は、図１及び図２に示すように、容器本体となる断熱容器１と、断熱容器１に対して着脱自在に取り付けられる蓋体２００とを備えている。蓋付き容器１００では、断熱容器１に対して螺合により取り付けられた蓋体２００によって、この断熱容器１の上部開口部１ａを開閉することが可能となっている。 1 and 2, the lidded container 100 of the present embodiment includes an insulated container 1 serving as a container body and a lid 200 detachably attached to the insulated container 1. As shown in FIGS. In the lidded container 100, the upper opening 1a of the insulated container 1 can be opened and closed by the lid 200 attached to the insulated container 1 by screwing.

なお、蓋体２００については、断熱容器１の上部開口部１ａから内側に嵌め込まれた状態で螺合により取り付けられる構成となっているが、このような構成に必ずしも限定されるものではない。例えば、蓋体２００については、断熱容器１の上部開口部１ａを覆った状態で断熱容器１の外側に螺合により取り付けられる構成であってもよい。また、蓋体２００は、断熱容器１の上部開口部１ａを直接開閉する構成に限らず、断熱容器１に取り付けられたキャップ本体に対して蓋体を開閉自在に取り付けた構成であってもよい。さらに、蓋体は、キャップ本体に対して螺合により取り付けられた構成に限らず、キャップ本体に対してヒンジ部を介して回動自在に取り付けられた構成であってもよい。 Although the lid 200 is fitted inside the upper opening 1a of the heat-insulating container 1 and attached by screwing, the lid 200 is not necessarily limited to such a configuration. For example, the lid 200 may be screwed to the outside of the heat insulating container 1 while covering the upper opening 1a of the heat insulating container 1 . In addition, the lid 200 is not limited to a structure that directly opens and closes the upper opening 1a of the heat insulating container 1, but may be a structure in which the lid is attached to the cap main body attached to the heat insulating container 1 so as to be openable and closable. . Further, the lid body is not limited to being attached to the cap body by screwing, but may be attached to the cap body rotatably via a hinge portion.

断熱容器１は、図３に示すように、例えばステンレス等からなる金属製の外容器２及び内容器３を備えている。断熱容器１は、一端（以下、「開口端」という。）２ａが開口した外容器２の内側に一端（以下、「開口端」という。）３ａが開口した内容器３を収容した状態で、互いに接合されると共に、これら外容器２と内容器３との間に真空断熱層４が設けられた真空断熱構造を有している。 As shown in FIG. 3, the heat insulating container 1 includes an outer container 2 and an inner container 3 made of metal such as stainless steel. The heat-insulating container 1 accommodates an inner container 3 having one end (hereinafter referred to as "open end") 3a opened inside an outer container 2 having one end (hereinafter referred to as "open end") 2a opened. It has a vacuum insulation structure in which a vacuum insulation layer 4 is provided between the outer container 2 and the inner container 3 while being joined together.

真空断熱層４は、例えば、高真空に減圧（真空引き）されたチャンバー内で、外容器２の底面中央部に設けられた脱気孔をろう材により封止することによって形成することができる。 The vacuum heat insulating layer 4 can be formed, for example, by sealing a degassing hole provided in the center of the bottom surface of the outer container 2 with a brazing material in a chamber evacuated to a high vacuum.

断熱容器１では、このような真空断熱構造を有することで、飲料容器として保温や保冷といった機能を持たせることが可能である。また、断熱容器１では、このような真空断熱構造を有することで、内圧（真空圧）と外圧（大気圧）の差により外容器２及び内容器３に対して常に張力が加わった状態となり、これら外容器２及び内容器３の機械的強度が増すことになる。これにより、外容器２及び内容器３の板厚を薄くした場合でも、断熱容器１の剛性を高めることが可能であり、この断熱容器１の軽量化を図ることが可能である。 Since the heat insulating container 1 has such a vacuum heat insulating structure, it is possible to provide the heat insulating and cold insulating functions as a beverage container. In addition, since the heat insulating container 1 has such a vacuum heat insulating structure, tension is always applied to the outer container 2 and the inner container 3 due to the difference between the internal pressure (vacuum pressure) and the external pressure (atmospheric pressure). The mechanical strength of these outer container 2 and inner container 3 is increased. As a result, even when the plate thicknesses of the outer container 2 and the inner container 3 are reduced, the rigidity of the heat insulating container 1 can be increased, and the weight of the heat insulating container 1 can be reduced.

断熱容器１は、略円形状の底面部１ｂと、底面部１ｂの外周から略円筒状に起立した胴部１ｃと、胴部１ｃの上部側において縮径された略円筒状の口頸部１ｄとを有している。また、口頸部１ｄの上端部は、断熱容器１の上部開口部１ａとして、円形状に開口している。 The heat-insulating container 1 includes a substantially circular bottom portion 1b, a substantially cylindrical body portion 1c standing up from the outer periphery of the bottom portion 1b, and a substantially cylindrical mouth-neck portion 1d whose diameter is reduced on the upper side of the body portion 1c. and Further, the upper end of the mouth/neck portion 1d is opened in a circular shape as the upper opening portion 1a of the heat insulating container 1. As shown in FIG.

口頸部１ｄの内周面には、雌ネジ部５が設けられている。雌ネジ部５は、口頸部１ｄの上端側から下方に向けて螺旋状に突出したネジ山から構成されている。さらに、雌ネジ部５の下方には、リング状の張出部６が内容器３の内周面から全周に亘って突出して設けられている。 A female screw portion 5 is provided on the inner peripheral surface of the mouth/neck portion 1d. The female threaded portion 5 is formed of a thread spirally protruding downward from the upper end side of the mouth/neck portion 1d. Furthermore, below the female threaded portion 5, a ring-shaped projecting portion 6 is provided so as to protrude from the inner peripheral surface of the inner container 3 over the entire circumference.

蓋体２００には、雌ネジ部５と螺合される雄ネジ部２０１が設けられている。また、蓋体２００には、上部開口部１ａの内側に嵌め込まれた際に、弾性変形しながら張出部６に全周に亘って密着される止水パッキン３００が着脱自在に取り付けられている。 The cover 200 is provided with a male threaded portion 201 that is screwed with the female threaded portion 5 . In addition, a waterproof packing 300 is detachably attached to the lid body 200. The waterproof packing 300 is elastically deformed and tightly adheres to the overhanging portion 6 over the entire circumference when it is fitted inside the upper opening 1a. .

なお、本実施形態の断熱容器１は、全体として略円筒状の外観形状を有しているが、断熱容器１の外観形状については、特に限定されるものではなく、サイズやデザイン等に合わせて、適宜変更を加えることが可能である。また、外容器２の外面には、塗装や印刷等が施されていてもよい。 Although the heat-insulating container 1 of the present embodiment has a substantially cylindrical external shape as a whole, the external shape of the heat-insulating container 1 is not particularly limited, and can be adjusted according to the size, design, and the like. , can be modified accordingly. Further, the outer surface of the outer container 2 may be painted, printed, or the like.

ところで、本実施形態の断熱容器１は、図４に示すように、外容器２と内容器３との突き合わせ部分（以下、「突合部」という。）２ｂ，３ｂにおいて互いに接合される外側接合端部１１及び内側接合端部１２を備えている。 By the way, as shown in FIG. 4, the heat insulating container 1 of the present embodiment has outer joint ends where the outer container 2 and the inner container 3 are joined together at abutting portions (hereinafter referred to as "butting portions") 2b and 3b. It has a portion 11 and an inner joining edge 12 .

外側接合端部１１は、外容器２の開口端２ａを上方に向かって延長させたストレート部１３を含む。ストレート部１３は、口頸部１ｄの外面に沿って、断面視で上下方向に直線状に形成されている。また、外側接合端部１１において外容器２の開口端２ａと突合部２ｂとが一致している。 The outer joint end portion 11 includes a straight portion 13 extending upward from the open end 2a of the outer container 2 . The straight portion 13 is formed linearly in the vertical direction in a cross-sectional view along the outer surface of the mouth/neck portion 1d. Also, the opening end 2a of the outer container 2 and the butting portion 2b are aligned at the outer joint end portion 11 .

内側接合端部１２は、内容器３の上端から外向きに折り返しながら、内容器３の開口端３ａを下方に向かって折り曲げたカーブ部１４と、カーブ部１４の外面の一部を平坦化した平坦部１５と含む。 The inner joint end portion 12 has a curved portion 14 formed by bending the open end 3a of the inner container 3 downward while folding outward from the upper end of the inner container 3, and flattening a part of the outer surface of the curved portion 14. Including flat portion 15 .

カーブ部１４は、内容器３の開口端３ａが外側接合端部１１（外容器２）の内面と内側接合端部１２（内容器３）の外面との間に位置するように折り曲げられている。 The curved portion 14 is bent so that the open end 3a of the inner container 3 is positioned between the inner surface of the outer joint end portion 11 (outer container 2) and the outer surface of the inner joint end portion 12 (inner container 3). .

内側接合端部１２では、内容器３の開口端３ａが外側接合端部１１（外容器２）の内面と接触する位置にあると、外容器２の内側に内容器３を嵌め込む際に、内容器３を外容器２の内側に嵌め込むことができなくなったり、内側接合端部１２の形状が変化したりするため、好ましくない。一方、内容器３の開口端３ａが内側接合端部１２（内容器３）の外面と接触する位置にあると、平坦部１５を形成する際に、カーブ部１４の形状が変化してしまい、口当たりの良い丸みが得られなくなるため、好ましくない。 At the inner joint end portion 12, if the opening end 3a of the inner container 3 is in contact with the inner surface of the outer joint end portion 11 (outer container 2), when fitting the inner container 3 inside the outer container 2, This is not preferable because the inner container 3 cannot be fitted inside the outer container 2 or the shape of the inner joint end portion 12 changes. On the other hand, if the open end 3a of the inner container 3 is in contact with the outer surface of the inner joint end portion 12 (inner container 3), the shape of the curved portion 14 changes when the flat portion 15 is formed. It is not preferable because it makes it impossible to obtain a pleasant roundness.

平坦部１５は、カーブ部１４の一部をストレート部１３と平行となるように平坦化している。内側接合端部１２では、このような平坦部１５を設けることによって、ストレート部１３の内面とカーブ部１４の外面との接触面積を拡げることが可能である。 The flat portion 15 flattens a portion of the curved portion 14 so as to be parallel to the straight portion 13 . By providing such a flat portion 15 at the inner joint end portion 12 , it is possible to increase the contact area between the inner surface of the straight portion 13 and the outer surface of the curved portion 14 .

本実施形態の断熱容器１では、ストレート部１３の内面と、平坦部１５を含むカーブ部１４の外面とが突き合わされた状態で、外側接合端部１１と内側接合端部１２との突合部２ｂ，３ｂが接合されている。外側接合端部１１と内側接合端部１２との接合には、例えばレーザー溶接などの溶接方法が用いられる。 In the insulated container 1 of the present embodiment, the abutment portion 2b between the outer joint end portion 11 and the inner joint end portion 12 is formed while the inner surface of the straight portion 13 and the outer surface of the curved portion 14 including the flat portion 15 are butted against each other. , 3b are joined. A welding method such as laser welding is used to join the outer joint end portion 11 and the inner joint end portion 12 .

なお、本実施形態の断熱容器１では、その上部開口部１ａが内容器３の上端部３ｃにより構成されている。また、内容器３の上端部３ｃは、上述したカーブ部１４の一部により構成されている。本実施形態では、内容器３の上端部３ｃが突合部３ｂよりも上方に位置した構成となっているが、内容器３の上端部３ｃが突合部３ｂと一致する構成であってもよい。 In addition, in the heat insulating container 1 of the present embodiment, the upper opening 1a is formed by the upper end portion 3c of the inner container 3. As shown in FIG. Further, the upper end portion 3c of the inner container 3 is configured by part of the curved portion 14 described above. In this embodiment, the upper end portion 3c of the inner container 3 is positioned above the abutting portion 3b, but the upper end portion 3c of the inner container 3 may be aligned with the abutting portion 3b.

また、図４では、外側接合端部１１と内側接合端部１２との突き合わせ部分（境界）が図示されているが、接合後は、この突き合わせ部分が溶接により溶融することで、外側接合端部１１と内側接合端部１２との突合部２ｂ，３ｂに全周に亘って溶接ビードが形成されることになる。また、この溶接ビードについては、溶接加工の後に、研削及び研磨加工を施すことによって、平滑な面に仕上げられる。 In addition, FIG. 4 shows a butted portion (boundary) between the outer joint end portion 11 and the inner joint end portion 12, but after joining, the butted portion is melted by welding, so that the outer joint end portion A weld bead is formed over the entire circumference at the abutting portions 2b and 3b between the joint 11 and the inner joint end portion 12. As shown in FIG. In addition, the weld bead is finished to have a smooth surface by grinding and polishing after welding.

また、内容器３の内面には、突合部３ｂに向かって漸次拡径されたテーパー部１６が設けられている。テーパー部１６は、雌ネジ部５よりも上方から口頸部１ｄの内面に沿って、断面視で上下方向に直線状に形成されたストレート部１７の上端から突合部３ｂに向かって傾斜して設けられている。これにより、断熱容器１では、口頸部１ｄに直接口をつけて飲料を飲む場合などに、口当たりを良くし、良好な飲み心地を得ることが可能である。 Further, the inner surface of the inner container 3 is provided with a tapered portion 16 whose diameter gradually increases toward the abutment portion 3b. The tapered portion 16 is formed along the inner surface of the mouth/neck portion 1d from above the female screw portion 5, and is inclined from the upper end of the straight portion 17 which is linearly formed in the vertical direction in a cross-sectional view toward the abutment portion 3b. is provided. As a result, in the heat-insulated container 1, it is possible to improve the mouthfeel and obtain a good feeling when drinking a beverage by putting the mouth directly on the mouth-neck portion 1d.

以上のように、本実施形態の断熱容器１では、上述した外側接合端部１１と内側接合端部１２とを精度良く接合することができ、なお且つ、仕上がりの良い接合端部を得ることが可能である。したがって、この断熱容器１では、口頸部１ｄに直接口をつけて飲料を飲む場合などに、スムーズな飲料の流動が可能となり、良好な飲み心地を得ることが可能である。 As described above, in the insulated container 1 of the present embodiment, the outer joint end portion 11 and the inner joint end portion 12 can be joined with high accuracy, and a well-finished joint end portion can be obtained. It is possible. Therefore, in the heat-insulated container 1, when drinking a beverage by putting the mouth directly on the mouth-and-neck portion 1d, the beverage can flow smoothly, and a good drinking comfort can be obtained.

また、本実施形態の断熱容器１では、溶接ビードが大きくなることを防ぎつつ、製造工程の簡略化や製造コストの低減などを行うことが可能である。さらに、外容器２及び内容器３の板厚を薄くして、この断熱容器１の軽量化を図ると共に、断熱性能を向上させることも可能である。 Moreover, in the heat insulating container 1 of the present embodiment, it is possible to simplify the manufacturing process and reduce the manufacturing cost while preventing the weld bead from becoming large. Further, it is possible to reduce the thickness of the outer container 2 and the inner container 3 to reduce the weight of the heat insulating container 1 and improve the heat insulating performance.

なお、本発明は、上記実施形態のものに必ずしも限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。
例えば、本発明は、断熱容器に対して蓋体が取り付けられた蓋付き容器に必ずしも限定されるものではなく、例えば湯呑みやタンブラーなど、蓋体を備えない断熱容器に対しても本発明を幅広く適用することが可能である。 It should be noted that the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.
For example, the present invention is not necessarily limited to a lidded container in which a lid is attached to an insulated container. It is possible to apply

１…断熱容器 ２…外容器 ３…内容器 ４…真空断熱層 １１…外側接合端部 １２…内側接合端部 １３…ストレート部 １４…カーブ部 １５…平坦部 １６…テーパー部 １００…蓋付き容器 ２００…蓋体 ３００…止水パッキン REFERENCE SIGNS LIST 1 heat-insulated container 2 outer container 3 inner container 4 vacuum heat-insulating layer 11 outer joint end 12 inner joint end 13 straight portion 14 curved portion 15 flat portion 16 tapered portion 100 lidded container 200 Lid body 300 Waterproof packing

Claims (4)

一端が開口した金属製の外容器及び内容器を有して、前記外容器の内側に前記内容器を収容した状態で互いに接合されると共に、前記外容器と前記内容器との間に真空断熱層が設けられた断熱容器であって、
前記外容器の開口端を上方に向かって延長させたストレート部を含む外側接合端部と、
前記内容器の上端から外向きに折り返しながら、前記内容器の開口端を下方に向かって折り曲げたカーブ部とを含む内側接合端部とを備え、
前記カーブ部は、前記内容器の開口端が前記外側接合端部の内面と前記内側接合端部の外面との間に位置して、前記外側接合端部の内面と前記内側接合端部の外面とは非接触となるように折り曲げられ、
前記ストレート部の内面と前記カーブ部の外面とが突き合わされた状態で、前記外側接合端部と前記内側接合端部との突合部が接合されていることを特徴とする断熱容器。 Having an outer container and an inner container made of metal with one end open, they are joined together in a state in which the inner container is accommodated inside the outer container, and vacuum insulation is provided between the outer container and the inner container. A layered insulated container comprising:
an outer joint end portion including a straight portion extending upward from the open end of the outer container;
an inner joint end portion including a curved portion formed by bending the open end of the inner container downward while folding outward from the upper end of the inner container;
The curved portion is such that the open end of the inner container is positioned between the inner surface of the outer joint end portion and the outer surface of the inner joint end portion, and the curved portion is positioned between the inner surface of the outer joint end portion and the outer surface of the inner joint end portion. is bent so as to be out of contact with the
A heat-insulated container, wherein the abutment portion between the outer joint end portion and the inner joint end portion is joined in a state where the inner surface of the straight portion and the outer surface of the curved portion are butted against each other. 前記内側接合端部は、前記カーブ部の外面の一部を平坦化した平坦部を含み、
前記ストレート部の内面と前記平坦部とが突き合わされた状態で、前記外側接合端部と前記内側接合端部との突合部が接合されていることを特徴とする請求項１に記載の断熱容器。 The inner joint end includes a flat portion obtained by flattening a portion of the outer surface of the curved portion,
2. The insulated container according to claim 1, wherein the abutment portion between the outer joint end portion and the inner joint end portion is joined while the inner surface of the straight portion and the flat portion are butted against each other. . 前記内容器の内面に前記突合部に向かって漸次拡径されたテーパー部が設けられていることを特徴とする請求項１又は２に記載の断熱容器。 3. The insulated container according to claim 1, wherein the inner surface of the inner container is provided with a tapered portion whose diameter gradually increases toward the abutment portion. 請求項１～３の何れか一項に記載の断熱容器と、
前記断熱容器に対して着脱自在に取り付けられる蓋体とを備えることを特徴とする蓋付き容器。 The insulated container according to any one of claims 1 to 3,
A container with a lid, comprising: a lid detachably attached to the heat insulating container.
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