JP3066334B2 - Folding insulated box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable cold storage box suitable for use in transporting while keeping cold or warm.

[0002]

2. Description of the Related Art A waterproof sheet outer box having a bottom, front and rear side walls, and left and right side walls, and a bottom overlapped on an inner wall surface of the outer box.
A box having front and rear left and right heat insulating inner walls, a rectangular lid heat insulating plate and a lid heat insulating plate bag enclosing the lid heat insulating plate, and a lid capable of opening and closing the upper surface opening of the box body, The front, rear, left and right heat insulating inner walls are formed by projecting upward from the outer wall surface of each heat insulating inner wall, a rectangular heat insulating plate, a heat insulating plate bag enclosing the heat insulating plate, and the cover when the cover is covered. A foldable cool box that has an outer edge into which the heat insulating plate fits and is foldable inside is used.

[0003]

However, since the heat-insulating inner wall is sewn with a sewing machine after the heat-insulating plate is inserted into the heat-insulating plate bag, the inner wall of the heat-insulating plate is about several millimeters between the sewing position and the end of the heat-insulating plate. You can play. For this reason, a gap is formed between the heat insulating plate bag and the heat insulating plate, and the surface of the heat insulating inner wall cannot be accurately formed as a rectangular parallelepiped, and the outer edge cannot be held vertically. For this reason, there were problems that a sealing failure between the lid and the storage body occurred or the lid could not be smoothly attached and detached. SUMMARY OF THE INVENTION It is an object of the present invention to provide a foldable type in which the seam between the heat insulating plate and the heat insulating plate bag can be tightly sealed, the seal between the lid and the housing body can be improved, and the lid can be quickly attached and detached because the outer edge can be held vertically. It is in providing a cool box.

[0004]

The present invention comprises a waterproof sheet outer box having a bottom, front and rear side walls, left and right side walls, a bottom overlapped on the inner wall surface of the outer box, and front, rear, left and right heat insulating inner walls. A box, comprising a rectangular lid heat insulating plate and a lid heat insulating plate bag enclosing the lid heat insulating plate, comprising a lid capable of opening and closing the upper surface opening of the box, the front, rear, left and right heat insulating inner walls,
A rectangular heat insulating plate, a heat insulating plate bag that wraps the heat insulating plate, and an outer edge that is formed to protrude upward from the outer wall surface of each heat insulating inner wall, and that the lid heat insulating plate fits when the lid is covered. In the foldable cold insulation box having the inside and being foldable inside, the heat insulating plate bag has an insertion opening at an upper end, and an upper extension of the inner surface material in which the inner surface material of the heat insulating plate bag is extended upward. A band-shaped core plate serving as a core of the outer edge is connected to the upper extension of the inner surface material, and the front, rear, left and right heat insulating inner wall members are inserted into the heat insulating plate bag by inserting the heat insulating plate into the heat insulating plate bag. The lower part of the core plate is sandwiched between the outer surface of the heat insulating plate and the outer surface material of the heat insulating plate bag to form the upper surface material of the heat insulating plate bag and the core plate is erected. And

[0005]

According to the present invention, the seam of the heat insulating plate bag exactly matches the width of the upper edge of the heat insulating plate, and the heat insulating plate can be tightly fixed to the heat insulating plate bag. It can be formed horizontally along the entire thickness, and can be tightly overlapped on the upper surface of each of the front, rear, left and right heat insulating inner walls, so that the seal between the lid and the housing is improved. Also, since the lower half vertically supports the outer edge by the core plate sandwiched between the heat insulating plate and the heat insulating plate bag, the heat insulating plate of the lid can be smoothly fitted into the four outer edges. Become.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 4 show a foldable cold storage box, which comprises a box 1 and a lid 2 for removably opening and closing an upper opening 10 of the box 1. FIG. The box 1 includes a waterproof outer box-shaped bag 3 made of a bottom sheet 31, wide front and rear side wall sheets 32 and 33, and narrow left and right side wall sheets 34 and 35.

In the outer bag 3, as shown in FIG. 4, the bottom sheet 31, the front and rear heat insulating inner walls 42, 43 and the left and right heat insulating inner walls 42, 43 are superimposed on the inner surfaces of the front and rear left and right side wall sheets 32 to 35. Inner walls 44, 45 are mounted. Outer edges 4 project upward from outer ends of upper surfaces 46 to 49 of the front, rear, left and right heat insulating inner walls 42 to 45.

The front, rear, left and right side wall sheets 32 to 32 of the box-shaped outer bag 3
A band-shaped crimping fastener 11 is laterally attached to an upper portion of the outer surface of the 35. Band-shaped handles 12, 13 are sewn to the outer surfaces of the left and right side walls 34, 35. The front and rear heat-insulating inner walls 42 and 43 are sewn to the inner surfaces of the upper ends of the front and rear side wall sheets 32 and 33 only at the upper edges, so that they can be flipped up. The left and right heat insulating inner walls 44 and 45 are sewn to the inner surfaces of the lower ends of the left and right side wall sheets 34 and 35, and can be turned inward.

The lid 2 has a structure in which a rectangular heat insulating plate 23 made of foamed resin is sandwiched between the outer material 21 and the lining 22 and the periphery thereof is sewn (see FIG. 4). Around the sewn portion of the heat insulating plate 23, lid edge plates 24 to 27 in which the outer material 21 and the lining 22 are extended at the level of the outer material are provided in a freely bendable manner.
A band-shaped crimp fastener 1 is provided on the lower surfaces of the lid edge plates 24-27.
4 is attached to and detachable from the crimp fasteners 11 on the outer surfaces of the front, rear, left and right side wall sheets 32 to 35.

In this embodiment, the rear side wall sheet 3
At the upper end of the connecting band 3, a connecting band 15 having a lower end sewn and fixed is provided as a rotating connecting mechanism of the lid 2.
A crimping fastener 16 is sewn on the inner surface of the rear side 5 and a crimping fastener 17 (see FIG.
) And can be removed. Thereby, the lid 2
As shown in FIG. 3, the rear end is firmly connected and can be used as a lid that opens and closes. The connecting band 15 and the crimping fasteners 16 and 17 can be used even if they are omitted. When the cover 2 is put on, as shown in FIG.
The outer peripheral edge of the lower surface of the heat insulating plate 23 is fitted into the outer edge 4 and the upper surfaces 46 to 49 of the front, rear, left and right heat insulating inner walls 42 to 45.
Is pressed against.

The manufacturing procedure of the left and right heat insulating inner walls 44 and 45 is shown in FIGS. The front and rear heat insulating inner walls 42, 4
3 is manufactured in substantially the same manner. First, the heat insulating plate bag 50 shown in FIG. 5 is manufactured. The heat insulating plate bag 50 is formed of the outer sheet 5.
The inner sheet 6 is overlapped so as to have a flat rectangular space, and as shown in a partially enlarged view of FIG. The cross-section of the heat-insulating plate bag 50 has such a size that a heat-insulating plate 57 made of a foamed resin described later is tightly inserted.

The outer sheet 5 has an outer surface 51, an upper extension 52, and a lower extension 53. The inner sheet 6 has an inner surface portion 61, left and right side surface portions 62 and 63, and a bottom surface portion 64. The upper extension 52 is provided with a band-shaped crimp fastener 18. An upper extension 65 is provided on the inner surface 61, and upper extensions 66 and 6 are provided on the left and right side surfaces 62 and 63.
7 are formed, and the bottom surface portion 64 has a downward extension 68.

The lower extension portions 53 and 68 are sewn in an overlapped manner, and form a connection portion by sewing to the lower end portion of the right side wall sheet 35 of the housing. As shown in FIG. 6, the upper extension 65 is folded in the direction of the outer sheet 5, overlapped, sewn on both sides, and becomes a bag portion 69 opened downward.

As shown in FIG. 6, a core plate 54 made of a resin plate is inserted into the bag portion 69, and is sewn at a predetermined position 55. As shown in FIG. 7, a heat insulating plate 57 made of a foamed resin plate is inserted into the heat insulating plate bag 50. Predetermined position 55
Is set so that the thickness D of the heat insulating plate 57 and the length L (see FIG. 6) between the root line A of the upper extension 65 and the sewing position 55 match.

As shown in FIG. 8, the lower part of the core plate 54 is inserted between the outer surface of the heat insulating plate 57 and the outer surface 51 of the outer sheet 5. Thereby, the heat insulating plate 57 is connected to the heat insulating plate bag 50.
And the outer edge 40 is firmly held vertically. As shown in FIG. 9, the upper extension 52 of the outer sheet 5 has an upper end bent inward and is sewn together with the bag 69 and the core plate 54, and serves as a reinforcing member that forms the outer wall of the outer edge 4. .

The crimping fastener 18 is detachably fixed to a band-like crimping fastener (not shown) provided on the inner surface of the left or right side wall sheet 34 or 35 of the box-shaped outer bag 3. The right heat-insulating inner wall 45 has the same structure as the left heat-insulating inner wall 44. The front and rear heat-insulating inner walls 42, 4
3 has the same structure as the left heat insulating inner wall body 44 except for the crimp fastener 18.

Thus, the heat insulating plate 57 is accurately held at a predetermined position in the heat insulating plate bag 50.
The outer corner of the upper surface of the upper part 7 and the sewing position 55 of the upper extension 65 can be accurately matched. As a result, in the operation of covering the lid 2, the heat insulating plate 23 attached to the lower surface of the lid 2 smoothly fits inside the outer edge 4.

[Brief description of the drawings]

FIG. 1 is a perspective view of a foldable cool box.

FIG. 2 is a perspective view of a foldable cool box.

FIG. 3 is a perspective view of a foldable cool box.

FIG. 4 is a perspective view of a foldable cool box.

FIG. 5 is a perspective view of a heat insulating plate bag.

FIG. 6 is a perspective view of an insulating plate bag with a core plate attached.

FIG. 7 is a perspective view of a heat insulating plate bag into which a heat insulating plate is inserted.

FIG. 8 is a perspective view of a heat insulating inner wall.

FIG. 9 is a perspective view of a heat-insulating inner wall.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 box 2 lid 23 heat-resistant plate 3 box-shaped outer bag 4 outer edge 42 to 45 heat-insulated inner wall 5 outer sheet 50 heat-insulated plate bag 54 core plate 6 inner sheet 66 upper extension 67 upper extension

Claims (3)

(57) [Claims] An outer box made of a waterproof sheet having a bottom, front and rear side walls, left and right side walls, and a bottom overlapped on an inner wall surface of the outer box;
A box provided with front, rear, left and right heat insulating inner walls, a rectangular cover heat insulating plate and a cover heat insulating plate bag enclosing the cover heat insulating plate, and a lid capable of opening and closing the upper surface opening of the box; The front, rear, left and right heat insulating inner walls are formed by projecting upward from the outer wall surface of each heat insulating inner wall, a rectangular heat insulating plate, a heat insulating plate bag enclosing the heat insulating plate, and the cover when the cover is covered. In the foldable cold insulation box having an outer edge into which the heat insulating plate fits and being foldable inward, the heat insulating plate bag has an insertion port at an upper end and the inner side surface material of the heat insulating plate bag is directed upward. An upper extension of the extended inner surface member is connected to a band-shaped core plate serving as a core of an outer edge, and the upper, lower, left, and right heat insulating inner walls are connected to the upper extension of the inner surface member. Insert the insulating plate into the insulating plate bag, and place the lower part of the core plate outside the insulating plate. A foldable cool box characterized by being formed between a surface and an outer surface material of a heat insulating plate bag to form an upper surface material of the heat insulating plate bag and to have a core plate erected. 2. The connection between the upper extension of the inner surface member and the core plate according to claim 1, wherein the upper extension wraps the core plate.
A foldable cold box characterized by being formed by sewing an upper extension portion and a core plate at an intermediate portion of the core plate. 3. The heat-insulating board bag according to claim 1, wherein the heat-insulating plate bag is provided with an upper extension of the outer side member extending upward and an upper portion of the left and right side member extending left and right side members upward. An extension (66, 67) is provided, the upper extension of the left and right side panels is inserted below the upper extension of the inner side panel, and the upper extension of the outer panel is connected to the core plate. A foldable cool box characterized by being wrapped around the top.