JP2003205939A - Foldable heat-insulating container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable heat-insulating container having a great heat- insulating effect and moreover capable of being easily stored in the state of a small size when it becomes empty. <P>SOLUTION: The foldable heat-insulating container comprises a bottom cloth 10, a fore cloth 1, a rear cloth, a right and a left side cloths 2, each cloth 1-2 extending from four sides of the bottom cloth, a lid cloth 3 extending from the rear cloth, and a covering cloth 4 extending from the lid cloth. Each cloth has an outer bag 5 which is formed by sewing two or more cloths, and a support member consisting of a bottom rigid sheet 9 fitted to a bottom of the outer bag and side rigid sheets extending from both ends of the bottom rigid sheet in a foldable manner and being vertically foldable at the respective central parts thereof. The rigid sheets are fixed to both the fore cloth and the rear cloth and are a plastic foam which is composed of fine closed cells and is impossible to be folded. The rigid sheets are sewed into a cloth bag for each piece, and at each connecting portion, the cloths are sewed or connected to each other. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention does not use a rigid plate for a lid cloth, but can be stacked in a safe manner, has a large heat insulating effect, and is half or less of the size when assembled when empty. The present invention relates to a foldable heat-insulating container that can be folded and stacked to have a thickness of.

[0002]

2. Description of the Related Art Recently, with the development and expansion of the road traffic network, the distribution mechanism has been changed to speedy and detailed transportation by truck. In addition, trucks equipped with freezing and refrigerating equipment and heating and humidifying machines are also provided, and various products, including frozen and refrigerated products, are delivered to various regions from large amounts to small amounts.
Even if a heat-insulating truck is provided, each product needs to be stored in a container of a certain size and taken out and delivered at a necessary place at any time. In addition, even in the stage of loading onto a truck, it is preferable that the containers containing the products are placed on a dolly and stacked in two or three stages for transportation. For that purpose, a heat insulating container that can be stably stacked is required. Further, when the contents are empty, it is preferable to be folded into a shape that is as small as possible and easy to carry. That is, it is preferable from the viewpoint of storage and transportation that the bottom shape in the folded state is substantially the same as the bottom shape in the stored state and the thickness is extremely reduced.

[0003]

However, the heat insulating container has a size capable of accommodating 50 to 60 kg of contents, and the thickness of the rigid heat insulating material reaches 2.5 to 5 cm. A box-shaped heat-insulating container in which such a rigid heat-insulating material is tightly assembled by putting it in a bag made of cloth on the bottom, front, back, and both sides, and sewing
Easy to reassemble It is very difficult to disassemble and fold. Furthermore, if the container is separated into two or more members when it becomes empty, it may be lost, which is disadvantageous in terms of quick handling. If possible, it is preferable that the container is handled as one when it is empty.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and its constitution is a bottom cloth, a front cloth extending from four sides of the bottom cloth, a rear cloth, left and right side cloths, and a rear cloth. An outer bag formed by sewing two or more cloths, each of which is composed of a lid cloth extending from the lid cloth and a covering piece extending from the lid cloth, a bottom rigid plate fitted to the bottom of the outer bag, and the bottom. It has a support body consisting of a side rigid plate that can be folded up and down at a central portion that foldably extends from both ends of the rigid plate, and the rigid plate is fixed to the front cloth and the rear cloth,
The rigid plate is a non-foldable plastic foam made of fine closed cells, the rigid plate is sewn into a cloth bag for each piece, and the connecting parts are sewn together or continuous with each other. To do. Furthermore, the front and rear rigid plates are provided with a step at approximately the center in the vertical direction, and the upper part is narrower than the lower part by the thickness of the rigid plate. Cut at the same height and sewn with a cloth bag, the upper part is wider than the lower part by the thickness of the rigid plate, the bottom rigid plate, the front rigid plate, the rear rigid plate and the rigid plates on both sides. However, it is characterized by being able to engage in a box shape so as to resist the pressing force from the outside.

That is, according to the present invention, the outer bag, the bottom rigid plate, and the rigid plates on both sides are separated, and the front rigid plate and the rear rigid plate are sewn to the inner side of the outer bag or engaged by using a surface fastener. To do.
Therefore, in the outer bag, the front rigid plate and the rear rigid plate can be folded in parallel. As for the support, the side rigid plates on both sides are set up and down 2
Divide, fold and stack on the bottom plate. As a result, the folded bottom plate is overlapped on both ends of the bottom plate, and a total of three rigid plates are overlapped. Insert this stacked support between the front rigid plate and the rear rigid plate of the outer bag, fold the excess side cloth,
When covered with a cover plate, it is externally integrated and about 1/3 of the time it is stored
Becomes thick. When assembling, open the front rigid plate and the rear rigid plate and take out the support. Next, while inserting the bottom rigid plate, the side rigid plate is extended to one sheet, and the bottom rigid plate and the side rigid plate are loaded so as to be substantially perpendicular to the bottom rigid plate, whereby a strong container is assembled.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention improves the heat insulating property and the stacking property by putting rigid plates in the outer bag in the bottom, front, rear, and five sides on both sides and closely combining them. The rigid plate is sewn and wrapped with a plastic cloth such as nylon cloth. Therefore, when connecting the rigid plates to each other, a predetermined portion of the nylon cloth that wraps the rigid plates is sewn. However, in the following description, when the rigid plate is described as being sewn, "the rigid plate and the cloths surrounding the rigid plate" are omitted.

Further, in order to eliminate radiant heat, an aluminum vapor-deposited layer is provided on a portion which becomes an outer surface and an inner surface in an assembled state. That is, a transparent plastic sheet such as polyester is vapor-deposited with aluminum, and the sheet is sewn with the vapor deposition surface facing inward. Further, the side rigid plate is divided into upper and lower parts, and it is characterized by being sewn so that they can be stacked in two stages. By utilizing this feature, a step is provided between the front and rear rigid plates and the side rigid plate as described later. , The boxes can be assembled firmly so that the boxes do not collapse even if they are stacked and stacked.

The present invention will be described in detail below with reference to the drawings. 1 is a perspective view of the present invention with the outer bag slightly open, FIG. 2 is a cross-sectional explanatory view showing a state in which the support is folded, and FIG. 3 shows the engagement of the front rigid plate or the rear rigid plate with the support. FIG. 4 is a perspective view in which the support is loaded into the outer bag, and FIG. 5 is a perspective view in an assembled state.

Reference numeral 1 is a front cloth, and 2 is a side cloth. A bottom cloth and a rear cloth which are not visible in FIG. 1 form a bag body, a lid cloth 3 extends from the rear cloth, and a covering lid piece 4 from the lid cloth 3. It extends to form the outer bag 5. Each cloth of the outer bag 5 is formed by sewing at least two cloths into a bag shape, and preferably a flexible plastic foam such as expanded polyethylene is housed therein to enhance heat insulation and cushioning. On the front cloth 1 and the rear cloth of the outer bag 5, a front rigid plate 6 and a rear rigid plate 7 housed in a cloth bag are sewn or fixed by hook-and-loop fasteners. As a rigid plate, thickness 2.5
Use plastic foam with ~ 5 cm of dense closed cells. In the drawing, a rigid and dense foam made of polystyrene having a thickness of 3 cm was used.

As shown in FIG. 2, each heat insulating rigid plate is wrapped in a cloth bag. In FIG. 2, the cloth is indicated by a broken line, and the sewn portion between the cloth and the cloth enclosing different foams is surrounded by a circle. That is, the bottom rigid plate 9 is sewn to the lower side rigid plate 11a at the place where the width of the rigid plate is inserted from the end, and the lower side rigid plate 11a is sewn.
The corner farthest from the portion sewn with the bottom rigid plate 9 is sewn with the upper side rigid plate 11b. When the upper side rigid plate 11b is pulled, as shown on the right side of FIG. 3, the lower side rigid plate 11a rises vertically from the corner of the bottom rigid plate 9 and rises on the same plane as the lower side rigid plate 11a. Armpit rigid plate 11b
Extends. That is, one of the cross-sections of the armpit rigid plate 11 is sewn on, and when the cross-sections and all of the cross-sections come into contact with each other, they become one plate shape.

Since the container of the present invention is used for loading heavy objects, it is desirable that the bottom rigid plate 9 and the side rigid plate 11 are firmly fixed. In the present invention, since the entire bottom surface of the side rigid plate 11 is fixed by the two opposite sides of the bottom rigid plate 9, it can be used with confidence. When the support body 8 is folded, as shown in FIG. 2, if the support body 8 is folded at the sewn portion, the lower side rigid plate 11a is placed on the bottom rigid plate 9 and the lower side rigid plate 1a.
The upper side rigid plate 11b is superposed on the la 1a, and a total of three rigid plates are superposed. When the support 8 is stored in the outer bag 5, the thickness is about 1/3 of the thickness when used.

In the present invention, the upper side rigid plate 11b.
Is preferably wider than the lower armpit rigid plate 11a by the thickness of the rigid plate. Of course, the front rigid plate 6, the rear rigid plate 7,
The height of the side rigid plate 11 including the thickness of the bottom rigid plate 9 is the same. The front rigid plate 6 and the rear rigid plate 7 have a step 12 at the substantially central portion.
Is provided to make the width of the lower part wider than the width of the upper part. Step 1
The position of 2 corresponds to the height of the upper side rigid plate 11b, and the difference between the upper width and the lower width corresponds to the thickness of the rigid plate at both ends. This relationship is shown in FIG. When the front rigid plate 6 is rotated in the direction of the arrow in FIG. 3 to engage the bottom rigid plate 9 and the side rigid plate 11 with each other, the rigid plates are stably meshed with each other, and the state shown by the broken line in FIG. 5 is obtained.

As shown in FIG. 4, the outer bag 5 is fully opened and the bottom plate 9 is inserted, and then the lower side rigid plate 11a is inserted. At this time, a substantially square space 13 remains between the front rigid plate 6 and the rear rigid plate 7 and the lower side rigid plate 11a. However, both the front rigid plate 6 and the rear rigid plate 7 are separated by the step 12,
Since the width is wide as shown in FIG. 3, the front rigid plate 6, the rear rigid plate 7, the bottom rigid plate 9 and the lower side rigid plate 11a cannot be tightly combined without this space 13. The lower rigid plate 11a and the upper rigid plate 11b are brought into contact with each other at their cross-sections to form one plate, which is further loaded into the outer bag 5. The upper side rigid plate 11b is closer to the space 1 than the lower side rigid plate 11a.
Since the amount corresponding to 3, that is, the thickness of the rigid plate is widened, the rigid plate is inserted into this space 13 and the rigid plates are combined together without a gap.

With such an engaged state, the side rigid plate 11 is not likely to fall inward even when stacked and a heavy object is placed on the front rigid plate 6 and the rear rigid plate 7.
Can't even fall inside. Since the outer bag 5 does not have rigidity, the space 13 is crushed during long use, which causes inconvenience when the upper side rigid plate 11b is loaded. Therefore, although not shown in the drawing, a rigid plastic sheet such as a polypropylene sheet or a polyvinyl chloride sheet is attached to the upper portion of the corner of the outer bag 5 to provide tension. The width of these sheets need only be able to protect the corners, and is a width that does not hinder the folding of the outer bag. In FIG. 4, reference numeral 14 is a handle used for transportation and is omitted in other drawings.

As described above, when the support 8 is inserted into the outer bag 5, the state shown in FIG. 5 is obtained. That is, before, after,
The bottom and both sides of the rigid plate in five directions are firmly engaged to form a box shape. Since the outer side is surrounded by the front cloth 1, the rear cloth, the side cloth 2, and the bottom cloth 10, they can be stacked, but the support 8 cannot be pulled out from the outer bag 5 when disassembled. 15 is a support pull-out tape,
The upper side rigid plate 11b, the lower side rigid plate 11a, and the bottom rigid plate 9 are sewn up to. Therefore, by pulling the support body drawing tape 13, the bottom rigid plate 9 can be floated, and the support body 8 can be taken out. The support pull-out tape 15 is omitted in other drawings.

After the support 8 is loaded into the outer bag 5 to form the shape shown in FIG. 5, the contents are loaded and the lid cloth 3 is put on the outer bag 5.
The cover lid piece 4 is fixed to the front cloth 1. In FIG. 1, 16 is a fastener, and 17 is a slider for opening and closing the fastener 16. By closing the upper end of the side cloth 2 and the end of the lid cloth 3 with the fastener 16, the internal temperature is less likely to be affected by the external temperature. When housing a heat-insulating container, the support 8
Fold up and stick it to the rear rigid plate 7
Is folded inward as a fold, as shown in FIG.

Reference numeral 18 is a surface fastener sewn on the outer surface of the upper end of the front cloth 1. Although not visible in FIG. 1, a hook-and-loop fastener that engages with the hook-and-loop fastener 18 is provided on the back surface of the covering lid piece 4. By closing with the fastener 16 and the surface fastener 18, the inside temperature can be maintained for a long time without being affected by the outside temperature. Although a fastener is used in FIG. 1, it is also preferable to close it with a surface fastener. Reference numeral 19 is also a hook-and-loop fastener, and when the contents are lost, the support 8 is removed and folded, and it is stored in an outer bag, it can be engaged with the hook-and-loop fastener of the covering lid piece and can be stably stored. Descriptions of fasteners and surface fasteners are omitted in other drawings.

When a frozen product is put in as the contents, there is no fear of losing its shape because it is hardened, but when storing vegetables or refrigerated items, the contents below may be crushed. The storage method in such a case is shown in FIG. 20
Is a hook and is suspended at both ends of the upper armpit rigid plate 11b.
Therefore, a total of four hooks 20 are provided. The net 21 is suspended from the hook so as not to contact the bottom rigid plate 9. The partition plate 22 is placed as horizontally as possible on the center of the suspended net 21. Since the contents placed on the partition plate do not press the contents below the partition plate, the shape collapse can be greatly reduced. The net is not limited to a net, and a non-woven fabric, a woven fabric, a knitted fabric, or the like, which is a breathable, flexible, and tough two-dimensional sheet can be used. In FIG. 6, a nylon cloth is used. Although a hook is used as the engaging means in FIG. 6, the surface fasteners are fixed to both ends of the side rigid plate,
If the other surface fasteners that engage with this surface fastener are fixed to the four corners of the net, the net can be mounted more easily.

Since the length of the net 21 and the size of the partition plate 22 can be arbitrarily adjusted, the ratio of the widths of the upper chamber and the lower chamber can be appropriately adjusted. Further, depending on the contents, it is possible to provide two or more partition plates 22, and in that case, two or more nets 21 having different lengths may be used.
Since a space remains between the partition plate 22 and the side rigid plate 11,
Since there is air circulation, the temperature and humidity inside the heat insulating container can be kept constant.

According to the present invention, the front, rear, bottom and both sides can be rigidly assembled by using rigid plates, but the lid surface does not use rigid plates. The reason for this is that the heat-insulating container contains small amounts of contents, so the entire upper surface must be opened to take out the contents one by one. Since a large amount of cold air or warm air escapes each time, it is preferable to make the lid material flexible and open it as much as necessary. In addition, since the side rigid plate 11 consists of two pieces, a total of seven rigid plates are assembled so that they do not collapse inside or outside, so stacking is possible with confidence even if the lid surface is flexible. can do.

[0021]

According to the present invention, it is possible to provide a foldable heat insulating container which is large in size, has a large heat insulating effect, and can be easily stored in a small size when empty.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which an outer bag of the present invention is slightly opened.

FIG. 2 is a cross-sectional explanatory view showing a state in which a support is folded.

FIG. 3 is an explanatory view showing the engagement of a front rigid plate or a rear rigid plate with a support.

FIG. 4 is a perspective view in which a support is inserted into an outer bag.

FIG. 5 is a perspective view of an assembled state.

FIG. 6 is an explanatory cross-sectional view when a partition plate is inserted.

[Explanation of symbols]

1 front cloth 2 side cloth 3 lid cloth 4 Cover pieces 5 outer bag 6 Front rigid plate 7 Rear rigid plate 8 support 9 Bottom rigid plate 10 Bottom cloth 11 Side rigid plate 12 steps 13 space 14 Handle 15 Support drawer tape 16 fasteners 17 Slider 18, 19 hook-and-loop fastener 20 hooks 21 net 22 Partition board

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E061 AA01 AB18 AC09 AD04 AD05                       AD07 CA06 CA15 DA06 DB20                 3E062 AA20 AB07 AC10 EB02 EC05                 3E067 AA11 AB01 BA05A BB05A                       BB17A CA18 EA01 EE60                       FA01 FC01 GA14

Claims (9)

[Claims] 1. A bottom cloth, a front cloth extending from four sides of the bottom cloth, a rear cloth, left and right side cloths, a lid cloth extending from the rear cloth, and a covering piece extending from the lid cloth. An outer bag formed by sewing two or more cloths, a bottom rigid plate that fits into the bottom of the outer bag, and a side part that can be folded up and down at a central portion that foldably extends from both ends of the bottom rigid plate. It has a support consisting of a rigid plate, the rigid plate is fixed to the front cloth and the rear cloth, and the rigid plate is a non-foldable plastic foam made of fine closed cells. The rigid plate is a cloth bag for each piece. A foldable heat-insulating container characterized in that the cloth is sewn or is continuous at the connecting portion. 2. The front and rear rigid plates are provided with a step at substantially the center in the vertical direction, and the upper part is narrower than the lower part by the thickness of the rigid plate. It is cut at the same height as the step and sewn with a cloth bag, and the upper part is wider than the lower part by the thickness of the rigid plate, and the bottom rigid plate, front rigid plate, rear rigid plate and both sides The folding heat insulating container according to claim 1, wherein the rigid plate and the rigid plate are engaged with each other in a box shape so as to resist a pressing force from the outside. 3. Engaging means for fixing the engaging means to both ends of both side rigid plates in a state where the support body is set, and engaging tools for engaging with the engaging means are provided at four corners of the net. 3. A net is hung in a heat-insulating container so as not to come into contact with the bottom, a partition plate is placed on the net, and articles that may lose their shape are stored above and below the partition plate. The foldable heat insulating container described. 4. The foldable heat insulating container according to claim 3, wherein the nets are used in combination of two or more stages. 5. A foldable heat-insulating container according to claim 1, wherein a transparent plastic film vapor-deposited with aluminum is sewn to the inner surface and the outer surface when assembled in a box shape. 6. The support pull-out tape sewn from the bottom of the bottom rigid plate to the outside of the armpit rigid plate and hanging outward from the upper part of the armpit rigid plate. The foldable heat-insulating container described in any one. 7. A plastic rigid sheet having a width that does not hinder folding is attached to the upper portions of the four corners where the front cloth, the rear cloth, and the side cloths are sewn together. The foldable heat-insulating container according to any one of 1. 8. The foldable heat-insulating container according to claim 1, wherein fasteners for fastening a side cloth and a lid cloth are sewn from both ends of the upper end of the rear cloth. 9. A surface fastener is sewn on the back surface of the tip of the cover lid piece, and the other surface fastener that engages with the surface fastener is sewn on the outside of the upper end of the front cloth. The foldable heat insulating container according to any one of 8 above.