WO2021235072A1 - 飲料用断熱容器 - Google Patents

飲料用断熱容器 Download PDF

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Publication number
WO2021235072A1
WO2021235072A1 PCT/JP2021/011556 JP2021011556W WO2021235072A1 WO 2021235072 A1 WO2021235072 A1 WO 2021235072A1 JP 2021011556 W JP2021011556 W JP 2021011556W WO 2021235072 A1 WO2021235072 A1 WO 2021235072A1
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WO
WIPO (PCT)
Prior art keywords
peripheral wall
heat insulating
cylinder
fitting body
beverage
Prior art date
Application number
PCT/JP2021/011556
Other languages
English (en)
French (fr)
Inventor
元岡新也
後藤真吾
Original Assignee
三恵技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三恵技研工業株式会社 filed Critical 三恵技研工業株式会社
Priority to US17/920,463 priority Critical patent/US11998143B2/en
Priority to CN202180036942.3A priority patent/CN115916002A/zh
Priority to KR1020227042373A priority patent/KR20230010213A/ko
Publication of WO2021235072A1 publication Critical patent/WO2021235072A1/ja

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    • 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
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/16—Water-bottles; Mess-tins; Cups
    • A45F3/18—Water-bottles; Mess-tins; Cups of rigid material
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • the present invention relates to a heat insulating container for beverages such as a water bottle having a heat insulating function.
  • the inner container is formed by a double structure of a substantially bottomed tubular and metal inner container and a substantially bottomed tubular and metal outer container. It is known that a decompressed heat insulating space is provided between the outer container and the outer container. This water bottle exhibits excellent heat and cold insulation effects for beverages contained in the inner container due to the decompressed heat insulating space.
  • the present invention is proposed in view of the above problems, and an object of the present invention is to provide a heat insulating container for beverages, which has high heat insulating properties and can effectively utilize wood such as thinned wood and bamboo wood. Another object of the present invention is to provide a heat insulating container for beverages, which is very individual and exhibits the beautiful appearance of wood or bamboo.
  • the heat insulating container for beverages of the present invention is abbreviated as a substantially bottomed cylindrical and wooden young bamboo inner cylinder, a substantially bottomed tubular and wooden young bamboo outer cylinder, and a substantially bottomed tubular inner wall.
  • a fitting body provided with a decompression space between the bottomed tubular outer wall is provided, and the fitting body is externally fitted to the inner cylinder so as to cover the bottom portion and the peripheral wall portion of the beverage storage space of the inner cylinder.
  • the outer cylinder is fitted onto the fitting body so as to cover the bottom portion of the outer wall of the fitting body and the peripheral wall portion.
  • a decompression space is provided between the outer cylinder and the inner cylinder by a fitting body fitted between the wooden young bamboo outer cylinder and the wooden young bamboo inner cylinder. It is possible to greatly enhance the heat insulating property of the heat insulating container for beverages which has the appearance made of bamboo. Further, by making both the outer cylinder and the inner cylinder made of wood or bamboo, the amount of wood or bamboo used can be increased, and wood such as thinned wood or bamboo can be effectively used for manufacturing. Further, since the appearance of the heat insulating container for beverages is the appearance of wood or bamboo as a whole or most of the heat insulating container for beverages, the heat insulating container for beverages can be made to have the appearance of the beauty of wood or bamboo.
  • the wood grain pattern and bamboo pattern of the appearance of the beverage heat insulating container such as the wood grain of the outer cylinder of wood or bamboo are different for each container, the individuality and uniqueness of the beverage heat insulating container as an individual product is very high. It is possible to meet the needs of consumers who have high unique tastes. Also, if the outer surface of the outer cylinder made of wood or bamboo, or if the outer body is made of wood or bamboo, the outer surface of the outer body made of wood or bamboo is exposed, wood or bamboo material is exposed. When applying a paint with a thickness that reflects the unevenness of the surface of wood or bamboo, the unevenness and height difference of the outer surface of the outer cylinder and the outer surface of the lid are smaller than those of the outer surface made of resin or metal. It can be made larger, which can shorten the survival period of the virus attached to the surface and improve the virus resistance.
  • the beverage heat insulating container of the present invention is provided with a flange portion protruding outward at the upper part of the inner cylinder, and the fitting body is externally fitted to the inner cylinder so that the upper end of the fitting body is in contact with the flange portion.
  • the upper end portion of the outer cylinder is fixed to the flange portion. According to this, the fitted body can be easily and accurately positioned by abutting on the flange portion, and the manufacturing work of the beverage heat insulating container can be facilitated and streamlined. Further, it is possible to prevent the fitting body from being visually recognized from above by hiding it so as to cover the fitting body with the flange portion, and it is possible to secure a better appearance of the wood.
  • the beverage heat insulating container of the present invention is characterized in that the upper end of the fitting body is arranged outside the peripheral wall portion of the inner wall of the fitting body. According to this, it is possible to facilitate the outer fitting of the fitting body into the inner cylinder, and to facilitate and improve the efficiency of the manufacturing work of the heat insulating container for beverages.
  • the beverage heat insulating container of the present invention is characterized in that an outwardly recessed recess is provided in an intermediate region in the longitudinal direction on the inner surface of the peripheral wall portion of the outer cylinder. According to this, when the outer cylinder is outer-fitted to the fitting body, the contact area between the inner surface of the peripheral wall portion of the outer cylinder and the outer peripheral surface of the outer wall of the fitting body can be reduced, and the frictional resistance can be reduced. It is possible to facilitate the outer fitting to the fitting body, and to facilitate and improve the efficiency of the manufacturing work of the heat insulating container for beverages.
  • the recesses provided around the circumference allow a heat insulating space to be provided between the outer peripheral surface of the outer wall of the fitting body and the peripheral wall portion of the outer cylinder, and the heat insulating property of the beverage heat insulating container can be further improved.
  • an upper peripheral wall portion covered with a lid is provided above the peripheral wall portion of the beverage storage space of the inner cylinder, and the lid is made of a wooden or bamboo exterior portion and the above. It is characterized by having a lid-side threaded portion screwed into the threaded portion of the upper peripheral wall portion and providing a heat insulating space inside the exterior portion. According to this, in the beverage heat insulating container provided with the lid, the heat insulating property can be improved on the lid side in the heat insulating space inside the exterior portion of the lid, and the heat insulating property of the beverage heat insulating container is further enhanced. Can be done.
  • the beverage heat insulating container of the present invention is provided with an upper peripheral wall portion covered with a lid above the peripheral wall portion of the beverage storage space of the inner cylinder, and the lid has a wooden or bamboo exterior portion.
  • the exterior portion is provided with a lid-side female screw portion that is screwed into the male screw portion of the upper peripheral wall portion. According to this, when the tip of the female screw portion of the wooden or bamboo exterior portion is chipped, it is possible to prevent the beverage from entering the beverage in the container.
  • the heat insulating container for beverages of the present invention high heat insulating properties can be obtained, and wood such as thinned wood and bamboo can be effectively used for production.
  • wood grain pattern and the bamboo pattern are different for each container, and the individuality is very high, so that it can be a heat insulating container for beverages that gives the appearance of the beauty of wood or bamboo.
  • the front view which shows the insulation container for beverages of embodiment by this invention.
  • the vertical sectional view which shows the insulation container for beverages of an embodiment.
  • (A) is an enlarged vertical cross-sectional view showing the upper part of the beverage heat insulating container of the embodiment
  • (b) is an enlarged vertical cross-sectional view showing the lower part of the beverage heat insulating container of the embodiment.
  • the bottom view which shows the insulation container for beverages of an embodiment.
  • the beverage heat insulating container 1 is used as a portable thermos bottle or a water bottle, and as shown in FIGS. 1 to 4, it has a substantially bottomed cylindrical shape, a wooden inner cylinder 3, and a substantially bottomed cylinder.
  • the container body 2 is detachably screwed to the container body 2 and the container body 2 which is composed of a cylindrical and wooden outer cylinder 4, a substantially bottomed tubular and metal double-walled fitting body 5, and the container body 2 is attached.
  • a lid 10 that can be opened and closed is provided, and the fitting body 5 is provided between the inner cylinder 3 and the outer cylinder 4.
  • the type of wood of the wooden inner cylinder 3 and the wooden outer cylinder 4 is appropriate within an applicable range, and for example, a thinned wood cypress or the like is suitable.
  • the wooden inner cylinder 3 has a substantially bottomed cylindrical shape in the present embodiment, and is provided with a bottom portion 31 and a peripheral wall portion 32 surrounding the beverage storage space BS.
  • another member constituting the bottom portion 31 and the lower end portion of the peripheral wall portion 32 is fitted into the member constituting most of the peripheral wall portion 32, and is fixed by adhesion or the like to provide the bottom portion 31 and the peripheral wall portion 32.
  • a flange portion 33 projecting outward is provided on the upper portion of the inner cylinder 3, and in the illustrated example, a flange portion 33 is provided so as to project outward at a substantially upper end position of the peripheral wall portion 32.
  • a bulging portion 34 is formed inside the peripheral wall portion 32 of the inner cylinder 3 at a substantially upper end position so as to bulge inward.
  • the ring-shaped sealing material 13 of the lid 10 which will be described later, comes into contact with the bulging portion 34 with the lid 10 closed so as to prevent the beverage contained in the beverage storage space BS from leaking. It has become.
  • an upper peripheral wall portion 35 covered with a lid 10 is provided above the peripheral wall portion 32 of the beverage storage space BS of the inner cylinder 3, and a screw portion to which the lid 10 is screwed is provided on the inner surface of the upper peripheral wall portion 35.
  • a female screw 351 corresponding to the above is formed.
  • the female screw 351 is formed on the inner surface of the upper peripheral wall portion 35, while the outer peripheral surface of the upper peripheral wall portion 35 has a smooth curved surface over the entire surface, so that the user of the beverage heat insulating container 1 can use it.
  • the mouth feel is good when the beverage is drunk by directly touching the upper peripheral wall portion 35.
  • the wooden outer cylinder 4 has a substantially bottomed cylindrical shape in the present embodiment, and is provided with a bottom portion 41 and a peripheral wall portion 42.
  • a recess 421 recessed outward is provided in an intermediate region in the longitudinal direction of the outer cylinder 4, for example, 70% or more of the length of the peripheral wall portion 42 in the longitudinal direction.
  • the recess 421 is provided around 80% or more.
  • the upper end portion 43 of the outer cylinder 4 is in contact with the tip surface of the flange portion 33 of the inner cylinder 3 from the outside, and is fixed to the flange portion 33 by adhesion or the like.
  • the fitting body 5 has a double wall structure in which a decompression space DS is provided between an inner wall 6 having a substantially bottomed cylinder and made of metal and an outer wall 7 having a substantially bottomed cylinder and made of metal.
  • the inner wall 6 has a substantially bottomed cylindrical shape, is composed of a bottom portion 61 and a peripheral wall portion 62, and is entirely made of a thin metal material having substantially the same thickness.
  • a predetermined bent shape is formed on the bottom portion 61 in a cross-sectional view, and the rigidity is increased.
  • the upper end portion 621 of the peripheral wall portion 62 of the inner wall 6 is formed so as to be convex outward and bend in an arc shape.
  • the outer wall 7 has a substantially bottomed cylindrical shape in the present embodiment, is composed of a bottom portion 71 and a peripheral wall portion 72, and is entirely made of a thin metal material having substantially the same thickness.
  • the peripheral wall portion 72 of the outer wall 7 is formed so as to extend linearly to the upper end portion thereof, and the upper end portion 621 of the peripheral wall portion 62 of the inner wall 6 is arranged along the inner surface of the upper end portion thereof.
  • the upper end of the peripheral wall portion 72 of the outer wall 7 and the upper end of the peripheral wall portion 62 of the inner wall 6 are fixed and closed by welding or the like to form the upper end 51 of the fitting body 5.
  • the upper end 51 of the fitting body 5 is arranged outside the peripheral wall portion 62 of the inner wall 6 of the fitting body 5 because the upper end portion 621 is formed by bending.
  • the bottom 71 of the outer wall 7 is provided with a suction hole sealing portion 73 used for exhausting by vacuum suction from the space between the inner wall 6 and the outer wall 7, and the suction hole is provided on the inner surface side of the bottom 71.
  • a getter 74 that absorbs gas in the space between the inner wall 6 and the outer wall 7 is installed after the sealing.
  • the bottom portion 71 is formed with a predetermined bent shape in a cross-sectional view to increase the rigidity.
  • the fitting body 5 is externally fitted to the inner cylinder 3 so as to cover the bottom portion 31 and the peripheral wall portion 32 of the beverage storage space BS of the inner cylinder 3, and the upper end 51 of the fitting body 5 is fitted to the flange portion 33 of the inner cylinder 3. It is externally fitted to the inner cylinder 3 so as to be in contact with each other. That is, in the present embodiment, the bottom portion 61 of the inner wall 6 of the fitting body 5 is formed so that the bottom portion 61 of the inner cylinder 3 has the same bottom view shape and the size of the bottom view is slightly larger.
  • the inner peripheral surface of the peripheral wall portion 62 of the inner wall 6 of the inner wall 5 is formed so as to be slightly larger than the outer peripheral surface of the peripheral wall portion 32 of the inner cylinder 3, and further, the peripheral wall portion 62 of the inner wall portion 6 of the fitting body 5 is formed.
  • the height is set to be substantially the same as the height from the outer surface of the bottom portion 31 of the peripheral wall portion 32 of the inner cylinder 3 to the flange portion 33.
  • the wooden outer cylinder 4 is externally fitted to the fitting body 5 so as to cover the bottom portion 71 and the peripheral wall portion 72 of the outer wall 7 of the fitting body 5, and the peripheral wall portion 42 of the outer cylinder 4 externally fitted to the fitting body 5.
  • the upper end surface of the inner cylinder 3 is arranged so as to be substantially flush with the upper surface of the flange portion 33 of the inner cylinder 3. That is, in the present embodiment, the bottom portion 41 of the outer cylinder 4 is formed so that the bottom portion 71 of the outer wall 7 of the fitting body 5 has the same bottom view shape and the bottom view is larger.
  • the inner peripheral surface of the peripheral wall portion 42 is formed so as to be slightly larger than the outer peripheral surface of the peripheral wall portion 72 of the outer wall portion 7 of the fitting body 5, and the height inside the peripheral wall portion 42 of the outer cylinder 4 is further increased.
  • the height of the peripheral wall portion 72 of the outer wall 7 of the fitting body 5 + the thickness of the flange portion 33 are set to be substantially the same.
  • the lid 10 has a wooden exterior portion 11, and the exterior portion 11 of the present embodiment is formed in a substantially U-shape in cross section composed of a top plate 111 and a peripheral wall portion 112.
  • the type of wood of the wooden exterior portion 11 is appropriate within the applicable range, and for example, it is suitable to use a thinned wood cypress or the like.
  • an interior portion 12 having a substantially U-shape in cross-sectional view is fitted inside by reversing the U-shape.
  • the interior portion 12 is formed of, for example, synthetic resin, but may be made of wood.
  • the interior portion 12 has a bottom plate 121 and a sealing material fitting portion 122 provided so as to rise from the peripheral edge of the bottom plate 121, and is made of rubber so as to be fitted into the ring-shaped ridge 123 of the sealing material fitting portion 122.
  • a ring-shaped sealing material 13 is provided. The sealing material 13 abuts against the bulging portion 34 of the inner cylinder 3 with the lid 10 closed to seal the beverage storage space BS.
  • the interior portion 12 is provided with a peripheral wall 124 so as to rise from the sealing material fitting portion 122, and is screwed onto the outer peripheral surface of the peripheral wall 124 with a female screw 351 on the inner peripheral surface of the upper peripheral wall portion 35 of the inner cylinder 3.
  • a male screw 125 corresponding to the screw portion on the lid side is formed.
  • a bent portion 126 that bends in a substantially L-shaped cross-sectional view is formed so as to face outward from the upper end of the peripheral wall 124 toward the upper side.
  • the outer peripheral surface of the bent portion 126 is fitted to the inner peripheral surface of the peripheral wall portion 112 of the exterior portion 11, and the tip of the bent portion 126, in other words, the upper end of the interior portion 12, is in contact with the top plate 111 of the exterior portion 11. It is fixed by adhesion or the like.
  • the space surrounded by the top plate 111 of the exterior portion 11 and the interior portion 12 is a heat insulating space IS'by an air layer, and the heat insulating space IS'is provided inside the exterior portion 11 of the lid 10.
  • the heat insulating space IS'of the lid 10 enhances the heat insulating property on the open side of the container body 2.
  • a decompression space DS is provided between the outer cylinder 4 and the inner cylinder 3 by the fitting body 5 fitted between the wooden outer cylinder 4 and the wooden inner cylinder 3.
  • the heat insulating property of the beverage heat insulating container 1 having a wooden appearance can be greatly enhanced.
  • the amount of wood used is increased and wood such as thinned wood is effectively used for manufacturing. be able to.
  • the appearance of the beverage heat insulating container 1 composed of the wooden outer cylinder 4 of the container body 2 and the wooden exterior portion 11 of the lid 10 is the appearance of wood as a whole, so that the appearance of the beauty of wood is obtained.
  • the wood grain pattern of the wooden outer cylinder 4 and the wood grain pattern of the wooden exterior portion 11 are different for each container, it is possible to greatly enhance the individuality and uniqueness of the beverage heat insulating container 1 as an individual product. It is possible to meet the needs of consumers who have high unique tastes.
  • the fitting body 5 when the fitting body 5 is externally fitted to the inner cylinder 3, the fitting body 5 can be easily and accurately positioned by abutting on the flange portion 33, facilitating and efficiently manufacturing the beverage heat insulating container 1. Can be transformed into. Further, the flange portion 33 is hidden so as to cover the fitting body 5 to prevent it from being visually recognized from above, so that the appearance of the wooden can be better ensured. Further, by arranging the upper end 51 of the fitting body 5 outside the peripheral wall portion 62 of the inner wall 6 of the fitting body 5, the outer fitting of the fitting body 5 to the inner cylinder 3 is facilitated, and the beverage heat insulating container 1 is manufactured. Work can be facilitated and streamlined.
  • the concave portion 421 of the outer cylinder 4 reduces the contact area between the inner surface of the peripheral wall portion 42 of the outer cylinder 4 and the outer peripheral surface of the outer wall 7 of the fitting body 5 when the outer cylinder 4 is externally fitted to the fitting body 5. Friction resistance can be reduced, the outer cylinder 4 can be easily fitted to the fitting body 5, and the manufacturing work of the beverage heat insulating container 1 can be facilitated and made more efficient. Further, the recess 421 provided around the circumference allows the heat insulating space IS to be provided between the outer peripheral surface of the outer wall 7 of the fitting body 5 and the peripheral wall portion 42 of the outer cylinder 4, and the heat insulating property of the beverage heat insulating container 1 can be improved. It can be further enhanced.
  • the heat insulating property can be improved on the lid 10 side in the heat insulating space IS'inside the exterior portion 11 of the lid 10, and the heat insulating property of the beverage heat insulating container 1 can be improved.
  • the sex can be further enhanced.
  • the beverage heat insulating container 1 of the above embodiment is composed of the container body 2 and the lid 10, but the beverage heat insulating container of the present invention does not have a lid and corresponds to the container body.
  • a mug or soup cup consisting of a substantially bottomed tubular and wooden inner cylinder, a substantially bottomed tubular and wooden outer cylinder, and a fitting body having a decompression space interposed between the inner cylinder and the outer cylinder.
  • Beverage insulation containers such as, etc. are also included.
  • the heat insulating container for beverages of the present invention is not limited to a portable thermos bottle or a water bottle, and may be, for example, a tabletop thermos bottle, etc., and is applied to an appropriate heat insulating container for beverages within the scope of the purpose of the present invention.
  • NS a portable thermos bottle or a water bottle
  • the inner cylinder 3 and the outer cylinder 4 of the container body 2, the outer body 11 of the lid 10, and the interior portion 12 as needed are made of wood, but all of them are made of wood. Alternatively, some of them may be made of bamboo.
  • the male screw 125 of the interior portion 12 of the lid 10 is screwed into the female screw 351 of the upper peripheral wall portion 35 of the inner cylinder 3 of the container body 2, but the lid 10 is made of wood. It is composed of an exterior portion 11 made of bamboo, or is formed by an interior portion provided with the exterior portion 11 as needed, and a male screw portion is formed on the outer periphery of the upper peripheral wall portion 35 of the inner cylinder 3 of the container body 2 and a lid is formed.
  • a female threaded portion on the lid side is formed on the wooden or bamboo exterior portion 11 of the body 10, and the female threaded portion on the lid side of the exterior portion 11 is screwed into the male threaded portion of the upper peripheral wall portion 35 to open and close the heat insulating container for beverages of the present invention. It is also good as a configuration that can be closed freely. This makes it possible to prevent the beverage from entering the beverage in the container when the tip of the female screw portion of the wooden or bamboo exterior portion is chipped.
  • the present invention can be used as a heat insulating container for beverages.
  • Lid 11 Exterior part 111... Top plate 112... Peripheral wall part 12... Interior part 121... Bottom plate 122... Seal material fitting part 123... Spike 124... Peripheral wall 125... Male screw 126... Bending part 13... Sealing material BS... Beverage storage space DS... Decompression space IS, IS'... Insulation space

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Packages (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Portable Outdoor Equipment (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

間伐材等の木材や竹材の有効利用を図ることができ、個別性が非常に高く、木材の美しさの外観を呈する飲料用断熱容器であり、略有底筒状で木製若しくは竹製の内筒３と、略有底筒状で木製若しくは竹製の外筒４と、略有底筒状の内壁６と略有底筒状の外壁７との間に減圧空間ＤＳが設けられる嵌合体５を備え、内筒３の飲料収容空間ＢＳの底部３１と周壁部３２を覆うようにして嵌合体５が内筒３に外嵌され、嵌合体５の外壁７の底部７１と周壁部７２を覆うようにして外筒４が嵌合体５に外嵌される飲料用断熱容器１。

Description

飲料用断熱容器
　本発明は、例えば断熱機能を有する水筒等の飲料用断熱容器に関する。
　従来、断熱機能を有する水筒として、特許文献１のように、略有底筒状で金属製の内容器と、略有底筒状で金属製の外容器の二重構造で形成され、内容器と外容器のとの間に減圧された断熱空間が設けられるものが知られている。この水筒は、減圧された断熱空間により、内容器に収容された飲料に対して優れた保温、保冷効果を発揮する。
特開２０１４－１１０号公報
　ところで、森林における樹木の健全な発育を促すように生育環境を整えるため、一部の樹木を伐採する間伐が行なわれているが、搬出コストの観点から、間伐で発生する間伐材を搬出せずに放置する切り捨て間伐が問題になっている。そのため、間伐材を製品化して間伐材の有効利用を図ることが極めて重要な課題になっている。また、近年の消費者の需要の多様化、個別化により、水筒等の飲料用断熱容器についても、木材の美しさの外観を呈すると共に、より個別性の高い製品が求められている。
　本発明は上記課題に鑑み提案するものであり、高い断熱性を有し、間伐材等の木材や竹材の有効利用を図ることができる飲料用断熱容器を提供することを目的とする。また、本発明の他の目的は、個別性が非常に高く、木材や竹材の美しさの外観を呈する飲料用断熱容器を提供することを目的とする。
　本発明の飲料用断熱容器は、略有底筒状で木製若しく竹製の内筒と、略有底筒状で木製若しく竹製の外筒と、略有底筒状の内壁と略有底筒状の外壁との間に減圧空間が設けられる嵌合体を備え、前記内筒の飲料収容空間の底部と周壁部を覆うようにして前記嵌合体が前記内筒に外嵌され、前記嵌合体の外壁の底部と周壁部を覆うようにして前記外筒が前記嵌合体に外嵌されていることを特徴とする。
　これによれば、木製若しく竹製の外筒と木製若しく竹製の内筒の間に嵌合される嵌合体で外筒と内筒の間に減圧空間を設けられることから、木製若しく竹製の外観を有する飲料用断熱容器の断熱性を非常に高めることができる。また、外筒と内筒の双方を木製若しく竹製とすることにより、木材や竹材の使用量を増やし、間伐材等の木材や竹材を有効利用して製造することができる。また、飲料用断熱容器の外観は、全体或いは大部分が木材や竹材の外観となることから、木材や竹材の美しさの外観を呈する飲料用断熱容器とすることができる。また、木製や竹材の外筒の木目等の飲料用断熱容器の外観の木目模様や竹模様は各容器毎に異なることから、飲料用断熱容器の個々の製品としての個別性、独自性を非常に高めることができ、独自嗜好が高い消費者の欲求に応えることができる。また、木製若しくは竹製の外筒の外表面、外装体が木製若しく竹製の蓋体を設ける場合には木製若しく竹製の外装体の外表面を、木材や竹材を露出させるか、木材や竹材の表面凹凸が反映される程度の厚さの塗料を施す場合には、樹脂製や金属製の外表面に比べて外筒の外表面や蓋体の外表面の凹凸、高低差を大きくすることができ、これにより、表面に付着したウイルスの生存期間を短くすることができ、耐ウイルス性を高めることができる。
　本発明の飲料用断熱容器は、前記内筒の上部に外側に突出するフランジ部が設けられ、前記嵌合体の上端が前記フランジ部に当接するようにして前記嵌合体が前記内筒に外嵌され、前記外筒の上端部が前記フランジ部に固着されていることを特徴とする。
　これによれば、嵌合体をフランジ部に当接して容易且つ正確に位置決めすることができ、飲料用断熱容器の製造作業を容易化、効率化することができる。また、フランジ部で嵌合体を覆うように隠して上側から視認されることを防止し、木製の外観をより良好に確保することができる。
　本発明の飲料用断熱容器は、前記嵌合体の上端が前記嵌合体の内壁の周壁部よりも外側に配置されていることを特徴とする。
　これによれば、嵌合体の内筒への外嵌めを容易にし、飲料用断熱容器の製造作業を容易化、効率化することができる。
　本発明の飲料用断熱容器は、前記外筒の周壁部の内面における長手方向の中間領域に外向きに凹んだ凹部が周設されていることを特徴とする。
　これによれば、外筒を嵌合体に外嵌めする際に、外筒の周壁部の内面と嵌合体の外壁の外周面との接触面積を減らし、摩擦抵抗を減らすことができ、外筒の嵌合体への外嵌めを容易にし、飲料用断熱容器の製造作業を容易化、効率化することができる。また、周設された凹部により、嵌合体の外壁の外周面と外筒の周壁部との間にも断熱空間を設けることができ、飲料用断熱容器の断熱性をより一層高めることができる。
　本発明の飲料用断熱容器は、前記内筒の飲料収容空間の周壁部より上側に蓋体で覆われる上部周壁部が設けられ、前記蓋体が、木製若しく竹製の外装部と、前記上部周壁部のねじ部に螺合される蓋側ねじ部を有すると共に、前記外装部の内側に断熱空間が設けられていることを特徴とする。
　これによれば、蓋体を備える飲料用断熱容器において、蓋体の外装部の内側の断熱空間で蓋体側でも断熱性を向上することができ、飲料用断熱容器の断熱性をより一層高めることができる。
　本発明の飲料用断熱容器は、前記内筒の飲料収容空間の周壁部より上側に蓋体で覆われる上部周壁部が設けられ、前記蓋体が、木製若しく竹製の外装部を有し、前記外装部に、前記上部周壁部の雄ねじ部に螺合される蓋側雌ねじ部が設けられていることを特徴とする。
　これによれば、木製若しく竹製の外装部の雌ねじ部の先端等が欠けた場合に、容器内の飲料に入ることを防止することができる。
　本発明の飲料用断熱容器によれば、高い断熱性を得ることができると共に、間伐材等の木材や竹材を有効利用して製造することができる。また、各容器毎に木目模様や竹模様が異なって個別性が非常に高く、木材や竹材の美しさの外観を呈する飲料用断熱容器とすることができる。
本発明による実施形態の飲料用断熱容器を示す正面図。 実施形態の飲料用断熱容器を示す縦断面図。 （ａ）は実施形態の飲料用断熱容器の上部を示す拡大縦断面図、（ｂ）は実施形態の飲料用断熱容器の下部を示す拡大縦断面図。 実施形態の飲料用断熱容器を示す底面図。
　〔実施形態の飲料用断熱容器〕
　本発明による実施形態の飲料用断熱容器１は、携帯用魔法瓶或いは水筒として用いられるものであり、図１～図４に示すように、略有底筒状で木製の内筒３、略有底筒状で木製の外筒４、略有底筒状で金属製の二重壁構造の嵌合体５から構成される容器本体２と、容器本体２に着脱自在に螺着され、容器本体２を開閉可能に閉じる蓋体１０を備え、内筒３と外筒４の間に嵌合体５が介在するように設けられる。尚、木製の内筒３、木製の外筒４の木材の種類は適用可能な範囲で適宜であり、例えば間伐材の檜等とすると好適である。
　木製の内筒３は、本実施形態では略有底円筒状であり、飲料収容空間ＢＳを囲む底部３１と周壁部３２が設けられている。図示例では、周壁部３２の大部分を構成する部材に、底部３１と周壁部３２の下端部を構成する別部材が嵌め込まれ、接着等で固着されて底部３１と周壁部３２が設けられている。また、内筒３の上部には外側に突出するフランジ部３３が設けられ、図示例では周壁部３２の略上端位置において外側に突出するようにフランジ部３３が設けられている。
　内筒３の周壁部３２の略上端位置における内側には、内側に膨出するようにして膨出部３４が形成されている。膨出部３４には、蓋体１０を閉じた状態で後述する蓋体１０のリング状のシール材１３が当接して、飲料収容空間ＢＳに収容された飲料が漏れることが防止されるようになっている。また、内筒３の飲料収容空間ＢＳの周壁部３２より上側には蓋体１０で覆われる上部周壁部３５が設けられ、上部周壁部３５の内面には蓋体１０が螺着されるねじ部に相当する雌ねじ３５１が形成されている。更に、図示例では上部周壁部３５の内面には雌ねじ３５１を形成する一方で、上部周壁部３５の外周面を全体に亘って滑らかな曲面とすることにより、飲料用断熱容器１の使用者が直接上部周壁部３５に口を当てて飲料を飲む際の口当たりを良好なものにしている。
　木製の外筒４は、本実施形態では略有底円筒状であり、底部４１と周壁部４２が設けられている。外筒４の周壁部４２の内面には、外筒４の長手方向の中間領域に外向きに凹んだ凹部４２１が周設されており、例えば周壁部４２の長手方向の長さの７０％以上、好適には８０％以上に亘って凹部４２１が周設されている。外筒４の上端部４３は、内筒３のフランジ部３３の先端面に外側から当接され、フランジ部３３に接着等で固着されている。
　嵌合体５は、略有底筒状で金属製の内壁６と、略有底筒状で金属製の外壁７との間に減圧空間ＤＳが設けられる二重壁構造である。内壁６は、本実施形態では略有底円筒状であり、底部６１と周壁部６２から構成され、全体が略同一の厚さの薄肉金属材で形成されている。底部６１には断面視で所定の折曲り形状が形成されており、剛性が高められている。内壁６の周壁部６２の上端部６２１は外側に凸で弧状に曲がるように形成されている。
　外壁７は、本実施形態では略有底円筒状であり、底部７１と周壁部７２から構成され、全体が略同一の厚さの薄肉金属材で形成されている。外壁７の周壁部７２は、その上端部まで直線状に延びて形成され、その上端部の内面には内壁６の周壁部６２の上端部６２１が沿うように配置されている。外壁７の周壁部７２の上端と内壁６の周壁部６２の上端は拝み溶接等で固着されて閉じられ、嵌合体５の上端５１を構成している。嵌合体５の上端５１は、上端部６２１が曲がって形成されていることにより、嵌合体５の内壁６の周壁部６２よりも外側に配置されている。
　外壁７の底部７１には、内壁６と外壁７との間の空間から真空吸引で排気する際に用いられた吸引穴の封止部７３が設けられ、底部７１の内面側には、吸引穴の封止後に内壁６と外壁７との間の空間のガスを吸収するゲッター７４が内装されている。また、底部７１には断面視で所定の折曲り形状が形成されており、剛性が高められている。
　嵌合体５は、内筒３の飲料収容空間ＢＳの底部３１と周壁部３２を覆うようにして内筒３に外嵌されており、嵌合体５の上端５１が内筒３のフランジ部３３に当接するようにして内筒３に外嵌されている。即ち、本実施形態では、嵌合体５の内壁６の底部６１が、内筒３の底部３１と底面視形状が同一で底面視の大きさが僅かに大きくなるように形成されており、嵌合体５の内壁６の周壁部６２の内周面が、内筒３の周壁部３２の外周面よりも僅かに大きくなるように形成されており、更に、嵌合体５の内壁６の周壁部６２の高さが、内筒３の周壁部３２の底部３１の外面からフランジ部３３までの高さと略同一に設定して形成されている。
　木製の外筒４は、嵌合体５の外壁７の底部７１と周壁部７２を覆うようにして嵌合体５に外嵌されており、嵌合体５に外嵌された外筒４の周壁部４２の上端面は内筒３のフランジ部３３の上面と略面一になるように配設される。即ち、本実施形態では、外筒４の底部４１が、嵌合体５の外壁７の底部７１と底面視形状が同一で底面視の大きさが大きくなるように形成されており、外筒４の周壁部４２の内周面が、嵌合体５の外壁７の周壁部７２の外周面よりも僅かに大きくなるように形成されており、更に、外筒４の周壁部４２の内側の高さが、嵌合体５の外壁７の周壁部７２の高さ＋フランジ部３３の厚さと略同一になるように設定して形成されている。
　蓋体１０は、木製の外装部１１を有し、本実施形態の外装部１１は、天板１１１と、周壁部１１２から構成される断面視略コ字形に形成されている。木製の外装部１１の木材の種類は適用可能な範囲で適宜であり、例えば間伐材の檜等とすると好適である。木製の外装部１１には、断面視略コ字形の内装部１２がコ字形を逆にして内側に嵌め込まれている。内装部１２は例えば合成樹脂で形成するが、木製としてもよい。
　内装部１２は、底板１２１と、底板１２１の周縁から立ち上がるように設けられたシール材嵌込部１２２を有し、シール材嵌込部１２２のリング状の突条１２３に嵌め込むようにしてゴム製のリング状のシール材１３が設けられている。シール材１３は、蓋体１０を閉じた状態で内筒３の膨出部３４に押し当てられるように当接して飲料収容空間ＢＳを封止する。
　内装部１２には、シール材嵌込部１２２から立ち上がるようにして周壁１２４が設けられ、周壁１２４の外周面に、内筒３の上部周壁部３５の内周面の雌ねじ３５１と螺合される蓋側ねじ部に相当する雄ねじ１２５が形成されている。更に、周壁１２４の上端から外側に向かい上側に向かうように断面視略Ｌ字形に屈曲する屈曲部１２６が形成されている。屈曲部１２６の外周面は外装部１１の周壁部１１２の内周面に嵌合され、屈曲部１２６の先端、換言すれば内装部１２の上端は外装部１１の天板１１１に当接され、接着等で固着されている。
　外装部１１の天板１１１と、内装部１２で囲まれる空間は空気層による断熱空間ＩＳ’になっており、蓋体１０の外装部１１の内側に断熱空間ＩＳ’が設けられる。この蓋体１０の断熱空間ＩＳ’により、容器本体２の開放側の断熱性が高められている。
　本実施形態の飲料用断熱容器１によれば、木製の外筒４と木製の内筒３の間に嵌合される嵌合体５で外筒４と内筒３の間に減圧空間ＤＳを設けることにより、木製の外観を有する飲料用断熱容器１の断熱性を非常に高めることができる。また、外筒４と内筒３の双方を木製とし、更には蓋体１０の外装部１１を木製とすることにより、木材の使用量を増やし、間伐材等の木材を有効利用して製造することができる。
　また、容器本体２の木製の外筒４と蓋体１０の木製の外装部１１で構成される飲料用断熱容器１の外観は、全体が木材の外観となることから、木材の美しさの外観を全体に亘って呈する飲料用断熱容器１とすることができる。また、木製の外筒４の木目模様や木製の外装部１１の木目模様は各容器毎に異なることから、飲料用断熱容器１の個々の製品としての個別性、独自性を非常に高めることができ、独自嗜好が高い消費者の欲求に応えることができる。
　また、嵌合体５を内筒３に外嵌めする際に、嵌合体５をフランジ部３３に当接して容易且つ正確に位置決めすることができ、飲料用断熱容器１の製造作業を容易化、効率化することができる。また、フランジ部３３で嵌合体５を覆うように隠して上側から視認されることを防止し、木製の外観をより良好に確保することができる。また、嵌合体５の上端５１を嵌合体５の内壁６の周壁部６２よりも外側に配置することにより、嵌合体５の内筒３への外嵌めを容易にし、飲料用断熱容器１の製造作業を容易化、効率化することができる。
　また、外筒４の凹部４２１により、外筒４を嵌合体５に外嵌めする際に、外筒４の周壁部４２の内面と嵌合体５の外壁７の外周面との接触面積を減らし、摩擦抵抗を減らすことができ、外筒４の嵌合体５への外嵌めを容易にし、飲料用断熱容器１の製造作業を容易化、効率化することができる。また、周設された凹部４２１により、嵌合体５の外壁７の外周面と外筒４の周壁部４２との間にも断熱空間ＩＳを設けることができ、飲料用断熱容器１の断熱性をより一層高めることができる。
　また、蓋体１０を備える飲料用断熱容器１において、蓋体１０の外装部１１の内側の断熱空間ＩＳ’で蓋体１０側でも断熱性を向上することができ、飲料用断熱容器１の断熱性をより一層高めることができる。
　〔本明細書開示発明の包含範囲〕
　本明細書開示の発明は、発明として列記した各発明、実施形態及びその変形例の他に、適用可能な範囲で、これらの部分的な内容を本明細書開示の他の内容に変更して特定したもの、或いはこれらの内容に本明細書開示の他の内容を付加して特定したもの、或いはこれらの部分的な内容を部分的な作用効果が得られる限度で削除して上位概念化して特定したものを包含する。そして、本明細書開示の発明には下記変形例や追記した内容も含まれる。
　例えば上記実施形態の飲料用断熱容器１は、容器本体２と、蓋体１０から構成されるものとしたが、本発明の飲料用断熱容器には、蓋体を備えずに、容器本体に相当する略有底筒状で木製の内筒と、略有底筒状で木製の外筒と、内筒と外筒の間に介在する減圧空間を有する嵌合体だけで構成されるマグカップ、スープカップ等の飲料用断熱容器も包含される。また、本発明の飲料用断熱容器は、携帯用魔法瓶或いは水筒に限定されず、例えば卓上魔法瓶等とすることも可能であり、本発明の趣旨の範囲内で適宜の飲料用断熱容器に適用される。
　また、上記実施形態の飲料用断熱容器１では、容器本体２の内筒３と外筒４、蓋体１０の外装体１１、必要に応じて内装部１２をそれぞれ木製としたが、これらを全部又はこれらの内の一部を竹製としても好適である。
　また、上記実施形態では、容器本体２の内筒３の上部周壁部３５の雌ねじ３５１に、蓋体１０の内装部１２の雄ねじ１２５を螺合する構成としたが、蓋体１０を木製若しく竹製の外装部１１で構成し、或いは外装部１１と必要に応じて設けられる内装部で形成し、容器本体２の内筒３の上部周壁部３５の外周に雄ねじ部を形成すると共に、蓋体１０の木製若しくは竹製の外装部１１に蓋側雌ねじ部を形成し、外装部１１の蓋側雌ねじ部を上部周壁部３５の雄ねじ部に螺合して本発明の飲料用断熱容器を開閉自在に閉じる構成としても良好である。これにより、木製若しく竹製の外装部の雌ねじ部の先端等が欠けた場合に、容器内の飲料に入ることを防止することができる。
　本発明は、飲料用断熱容器として利用することができる。
１…飲料用断熱容器　２…容器本体　３…内筒　３１…底部　３２…周壁部　３３…フランジ部　３４…膨出部　３５…上部周壁部　３５１…雌ねじ　４…外筒　４１…底部　４２…周壁部　４２１…凹部　４３…上端部　５…嵌合体　５１…上端　６…内壁　６１…底部　６２…周壁部　６２１…上端部　７…外壁　７１…底部　７２…周壁部　７３…封止部　７４…ゲッター　１０…蓋体　１１…外装部　１１１…天板　１１２…周壁部　１２…内装部　１２１…底板　１２２…シール材嵌込部　１２３…突条　１２４…周壁　１２５…雄ねじ　１２６…屈曲部　１３…シール材　ＢＳ…飲料収容空間　ＤＳ…減圧空間　ＩＳ、ＩＳ’…断熱空間
 

Claims (6)

  1. 　略有底筒状で木製若しく竹製の内筒と、
    　略有底筒状で木製若しく竹製の外筒と、
    　略有底筒状の内壁と略有底筒状の外壁との間に減圧空間が設けられる嵌合体を備え、
    　前記内筒の飲料収容空間の底部と周壁部を覆うようにして前記嵌合体が前記内筒に外嵌され、
    　前記嵌合体の外壁の底部と周壁部を覆うようにして前記外筒が前記嵌合体に外嵌されていることを特徴とする飲料用断熱容器。
  2. 　前記内筒の上部に外側に突出するフランジ部が設けられ、
    　前記嵌合体の上端が前記フランジ部に当接するようにして前記嵌合体が前記内筒に外嵌され、
    　前記外筒の上端部が前記フランジ部に固着されていることを特徴とする請求項１記載の飲料用断熱容器。
  3. 　前記嵌合体の上端が前記嵌合体の内壁の周壁部よりも外側に配置されていることを特徴とする請求項１又は２記載の飲料用断熱容器。
  4. 　前記外筒の周壁部の内面における長手方向の中間領域に外向きに凹んだ凹部が周設されていることを特徴とする請求項１～３の何れかに記載の飲料用断熱容器。
  5. 　前記内筒の飲料収容空間の周壁部より上側に蓋体で覆われる上部周壁部が設けられ、
    　前記蓋体が、木製若しく竹製の外装部と、前記上部周壁部のねじ部に螺合される蓋側ねじ部を有すると共に、前記外装部の内側に断熱空間が設けられていることを特徴とする請求項１～４の何れかに記載の飲料用断熱容器。
  6. 　前記内筒の飲料収容空間の周壁部より上側に蓋体で覆われる上部周壁部が設けられ、
    　前記蓋体が、木製若しく竹製の外装部を有し、
    　前記外装部に、前記上部周壁部の雄ねじ部に螺合される蓋側雌ねじ部が設けられていることを特徴とする請求項１～４の何れかに記載の飲料用断熱容器。
     
PCT/JP2021/011556 2020-05-18 2021-03-20 飲料用断熱容器 WO2021235072A1 (ja)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003235739A (ja) * 2002-02-14 2003-08-26 Kensuke Fujimura 水 筒
US20120018343A1 (en) * 2010-07-23 2012-01-26 Bamboo Bottle Company Drinking apparatus
US20130119075A1 (en) * 2011-11-11 2013-05-16 Lisa Kay Justiss Drinking vessel having an inner shell of a glass material and an outer shell of a non-glass material

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JP6039255B2 (ja) 2012-06-15 2016-12-07 三恵技研工業株式会社 真空二重容器の携帯用魔法瓶及びその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003235739A (ja) * 2002-02-14 2003-08-26 Kensuke Fujimura 水 筒
US20120018343A1 (en) * 2010-07-23 2012-01-26 Bamboo Bottle Company Drinking apparatus
US20130119075A1 (en) * 2011-11-11 2013-05-16 Lisa Kay Justiss Drinking vessel having an inner shell of a glass material and an outer shell of a non-glass material

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