JP2000283645A - Structure of heat-insulating box body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-insulating box body structure improving working performance at a time of fabricating a heat-insulating box body having an approximately U-shaped cross-section. SOLUTION: The heat-insulating box body structure is formed by forming heat-insulating box body 27 having an approximately U-shaped cross-section formed by uniting a rising part 27a of a front side, a bottom part 27b and a rising part 27c of a back side by filling a foamed heat-insulating material 41 into a space surrounded by an outside member 35, an inside member 37, and end members 39 of both ends. A first flange 43 is formed on an end part 35a of the outside member 35 and a second flange 45 is formed on an end part 37a of the inside member 37, and the end members 39 having rigidity bearable to foaming pressure is abutted against the first flange 43 and the second flange 45 from the inside, and the foamed heat-insulating material 41 is filled for forming the heat-insulating box body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating box having a substantially U-shaped cross section formed by filling a foamed heat insulating material in a space surrounded by an outer surface material, an inner surface material, and end materials at both ends. Related to box structure.

[0002]

2. Description of the Related Art In general, as shown in FIG. 4, a heat-insulating box 107 having a substantially U-shaped cross section in which a front rising portion 101, a bottom portion 103, and a rear rising portion 105 are continuous.
To the outer surface material 109, the inner surface material 111, and the end surface materials 113 at both ends.
A heat insulating box structure formed by filling a foam heat insulating material 115 into a space surrounded by the above is known. In this type, the end face material 113 is made of wood, resin, or the like, and the thickness T2 of the end face material 113 is small in order to improve the yield, and as shown in FIG. The front portion 117 is equivalent to the bottom portion 119, the bottom portion 119 is equivalent to the bottom portion 103, and the rear portion 121 is equivalent to the rear rising portion 105.

[0003]

However, in the conventional structure, as shown in FIG.
Was thin, so that the end face material 113 was
In this case, it was not possible to stand up without using a fixture or the like, and the rigidity was not high enough to withstand the foaming pressure when the foamed heat insulating material 115 was filled and foamed. For this reason, the end face material 113 may be deformed by the foaming pressure, and in order to prevent this, the flange 123 formed on the end 109a of the outer face material 109 and the end 111a of the inner face material 111,
Since the end face member 113 has to be screwed to the 125 with screws 127 and fixed, there is a problem that it takes time and effort. In addition, as shown in FIG.
3 front part 117, bottom part 119 and back part 1
21 is connected by a screw (not shown), so that there is a problem that it takes time and effort.

It is an object of the present invention to provide a heat-insulating box structure which solves the above-mentioned problems of the prior art and improves workability in assembling a heat-insulating box having a substantially U-shaped cross section. .

[0005]

According to the first aspect of the present invention,
A heat insulating box having a substantially U-shaped cross section in which a front-side rising portion, a bottom portion, and a rear-side rising portion are continuous is provided in a space surrounded by an outer surface material, an inner surface material, and end materials at both ends. In the heat insulating box structure formed by filling the first and second flanges, a first flange is formed at an end of the outer surface material, and a second flange is formed at an end of the inner surface material. The end face member having the rigidity to withstand the foaming pressure is abutted from the inside, and is formed by filling the foamed heat insulating material.

According to the first aspect of the present invention, since the end face material has rigidity to withstand the foaming pressure, it is not necessary to fix the end face material to the first and second flanges of the outer face material and the inner face material. Is improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the end face member has a front portion corresponding to a front rising portion, a bottom portion corresponding to a bottom portion, and a rear rising portion. , And each part is connected by combining a tenon and a tenon groove.

According to the second aspect of the present invention, each part of the end face material can be connected by combining a tenon and a tenon groove. Therefore, it is not necessary to fix the end face material with a fastener such as a screw, thereby improving workability. Since the end face material has the rigidity to withstand the foaming pressure, it is not necessary to fix the end face material to the first and second flanges of the outer face material and the inner face material, and workability is improved.

According to a third aspect of the present invention, there is provided a heat insulating box having a substantially U-shaped cross section in which a front rising portion, a bottom portion, and a rear rising portion are connected to each other. In the heat insulating box body structure formed by filling a foamed heat insulating material in a space surrounded by: a front side portion corresponding to a rising portion on a front side, a bottom portion corresponding to a bottom portion, and a back surface And a rear side portion corresponding to a rising portion on the side, and each portion is connected by combining a tenon and a tenon groove.

According to the third aspect of the present invention, since each part of the end face material can be connected by combining a tenon and a tenon groove, it is not necessary to fix the end face material with a fastener such as a screw, thereby improving workability.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, a description will be given based on a low-temperature showcase including a heat insulating box structure according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a low-temperature showcase. The low-temperature showcase 1 has an opening 3, and an interior 5 as a display space is provided behind the opening 3. In the compartment 5, three-stage display shelves 7a, 7b, 7c are provided, and a deck pan 9 is provided below them.
On the display shelves 7a, 7b, 7c and the deck pan 9, goods (not shown) are displayed.

The display shelves 7a, 7b, 7c are provided with a partition plate 1 in the refrigerator.
1, fluorescent lamps 13a, 13b, 13c are attached to the back of the display shelves 7a, 7b, 7c.
The deck pan 9 is placed on a wire rack 10 serving as a deck pan receiver.
0a is freely attached to the partition plate 11 in the refrigerator.
b is attached to the side wall 15 a of the cool air suction port 15.

A cold air passage 17 is provided on the back of the compartment partition plate 11.
A cooler 19 is provided at a lower portion of the cool air passage 17, and a cool air outlet 21 is connected to an upper portion thereof. On the left side in the figure below the cooler 19, the blower 2 for the cooler
3 is attached. This cooler blower 23 is
As shown by the solid arrow A, cold air inside the refrigerator whose temperature has risen is sucked through the cold air suction port 15. The drawn cool air is re-cooled by the cooler 19, sent out to the cool air passage 17 by the cooler blower 23,
From the storage 5. The cooler 19 is connected to a refrigerating device including a compressor, a condenser, a decompression device, and a blower for the condenser (not shown).

A fluorescent lamp 13d is provided near the inside of the cool air outlet 21 to illuminate the goods displayed on the display shelf 7a. A fluorescent lamp 13e is provided to illuminate the outside of the fluorescent lamp 13e.
Is provided with an over canopy 25 for accommodating a night cover (not shown) that closes the cover.

The low-temperature showcase 1 is provided with a heat insulating box 27 having a substantially U-shaped cross section below the blower 23 for the cooler.
The heat insulating box 27 includes a rear heat insulating plate 29 disposed on an upper surface 27d of a rising portion 27c on the rear side and a leg 31 disposed on a lower portion 27e. Is provided.

In this embodiment, as shown in FIG. 2, the heat-insulating box 27 having a substantially U-shaped cross section has a front-side rising portion 27a, a bottom portion 27b, and a rear-side rising portion 27c continuous. It is formed by filling the space surrounded by the outer surface material 35, the inner surface material 37, and the end surface materials 39 at both ends with the foamed heat insulating material 41.

The outer member 35 and the inner member 37 are formed by pressing a thin metal plate by pressing or the like.

The foam insulating material 41 is prepared by mixing an undiluted solution such as urethane and a coagulating liquid, filling the mixture through a hole (not shown) of the outer surface material 35, and surrounded by the outer surface material 35, the inner surface material 37, and the end surface materials 39 at both ends. It is expanded in a closed space.
The force generated when expanding is the foaming pressure. This foaming pressure is applied to the inner surface of the end face member 39 as shown by a solid arrow B.

A first flange 43 is formed at an end 35 a of the outer surface material 35, and a second flange 45 is formed at an end 37 a of the inner surface material 37. The first flange 43 and the second flange 45 are attached to the foam insulation 41.
An end face member 39 having rigidity to withstand the foaming pressure generated when the foam is filled is brought into contact with the inside 43a of the first flange 43 and the inside 45a of the second flange 45 to fill the foam insulation 41. A heat-insulating box 27 having a substantially U-shaped cross section is formed.

The first flange 43 and the second flange 45 have a width W1 and are formed by bending the ends of the outer plate 35 and the inner member 37.

In this embodiment, the end face member 39 has a thickness T1 in order to have rigidity to withstand the foaming pressure described above. This thickness T1 is formed to be thicker than the thickness of the conventional end face material.
In contrast to 0 mm to 15 mm, the thickness T1 of the end face member 39 is formed to be as thick as about 35 mm. For this reason, when assembling the above-described heat-insulating box 27, the heat-insulating box 27 can be placed upright on the outer surface material 35 without using a fixture or the like.

As shown in FIG. 3A, the end face member 39 includes a front portion 39a corresponding to the rising portion 27a on the front side, a bottom portion 39b corresponding to the bottom portion 27b,
Back side portion 39 corresponding to back side rising portion 27c
c. Each part is connected by combining a tenon 47 and a tenon groove 49.

In this embodiment, a tenon 47 is provided at the lower end of the front side portion 39a and the lower end of the rear side portion 39c on the left side in the figure, and a tenon groove 49 is formed at the front upper end and the rear end of the bottom portion 39b. And provided. A portion surrounded by a broken line A in FIG. 3A is a detailed view of a portion A in FIG. 3B, and a portion surrounded by a broken line B in FIG.
Part B is shown as a detailed view.

As shown in FIG. 3 (b), the tenon 47 is formed by a substantially trapezoidal projection at substantially the center of the lower end of the front side portion 39a. The tenon groove 49 is formed by a substantially trapezoidal concave portion which fits into the tenon 47 at substantially the center of the front upper end of the bottom portion 39b. Similarly, as shown in FIG. 3C, the tenon 47 is formed by a substantially trapezoidal convex portion on the left side in the figure at the lower end of the back side portion 39c. Mortise groove 49
Is formed by a substantially trapezoidal recess that fits into the tenon 47 slightly below the center of the rear end of the bottom portion 39b. Since the respective portions are connected by combining the tenon 47 and the tenon groove 49 described above, even if the portions are pulled in the direction of the solid arrow C, for example, the portion of the substantially trapezoidal slope is not caught and hardly comes off.

FIG. 3B shows the end face material 39.
As shown in (c), the inside 43a of the first flange 43
Abuts on the surface 39d and the inside 45a of the second flange 45
A recess 51 having substantially the same width as the width W1 of the first flange 43 and the second flange 45 is formed on a surface 39e with which the first flange 43 contacts.

This embodiment has the following effects.

Since the end face member 39 has the rigidity to withstand the foaming pressure, it is not necessary to fix the end face material 39 to the first flange 43 and the second flange 45 of the outer surface material 35 and the inner surface material 37, and the workability is improved. Is improved.

Each part of the end face material 39, that is, the front side part 3
9a, bottom portion 39b and back side portion 39c
7 and the tenon groove 49 can be combined and connected. For example, there is no need to fix with a fastener such as a screw.
Workability is improved.

Although the present invention has been described based on one embodiment, it is apparent that the present invention is not limited to this.

[0032]

According to the first aspect of the present invention, since the end face material has rigidity to withstand the foaming pressure, it is necessary to fix the end face material to the first and second flanges of the outer face material and the inner face material. And workability is improved.

According to the second aspect of the present invention, since each part of the end face material can be connected by combining a tenon and a tenon groove, it is not necessary to fix the end face material with a fastener such as a screw, thereby improving workability. Since the end face material has rigidity to withstand the foaming pressure, it is not necessary to fix the end face material to the first and second flanges of the outer face material and the inner face material, thereby improving workability.

According to the third aspect of the present invention, since each part of the end face material can be connected by combining a tenon and a tenon groove, it is not necessary to fix the end face material with a fastener such as a screw, thereby improving workability. I do.

[Brief description of the drawings]

FIG. 1 is a sectional view of a showcase showing one embodiment of the present invention.

FIG. 2 is a perspective view of a heat insulating box of the showcase shown in FIG.

FIG. 3A is a front view of an end member of the heat insulating box shown in FIG. 1; FIG. 3B is a detailed view of a portion A in FIG. FIG. 3C is a detailed view of a portion B in FIG.

FIG. 4 is a perspective view of a conventional heat insulating box.

FIG. 5 is a front view of an end member of a conventional heat insulating box.

[Explanation of symbols]

 27a Front-side rising portion 27b Bottom portion 27c Back-side rising portion 27 Insulating box 35 Outer surface material 37 Inner surface material 35a, 37a End 39 End face 41 Foamed heat insulator 43 First flange 45 Second flange

Continuation of the front page (72) Inventor Tetsuichi Ogushi 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Tadatake Watanabe 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka No. SANYO Electric Co., Ltd. F term (reference) 3L102 JA04 LB03 LB31 LB33 LB37 MA01 MB01 MB06

Claims (3)

[Claims] A space surrounded by an outer surface material, an inner surface material, and end surface materials at both ends of a heat insulating box having a substantially U-shaped cross section in which a rising portion on the front side, a bottom portion, and a rising portion on the back side are continuous. In a heat insulating box structure formed by filling a foam heat insulating material therein, while forming a first flange at an end of the outer surface material,
A second flange is formed at the end of the inner surface material, and the first and second flanges are formed by abutting an end surface material having rigidity to withstand foaming pressure from the inside to fill with foam insulation. A heat-insulating box structure. 2. The end face material is constituted by a front side portion corresponding to a front side rising portion, a bottom portion corresponding to a bottom portion, and a back side portion corresponding to a rear side rising portion. 2. The heat insulating box structure according to claim 1, wherein a tenon and a tenon groove are connected in combination. 3. A space surrounded by an outer surface material, an inner surface material, and end material at both ends, wherein a heat insulating box body having a substantially U-shaped cross section in which a front rising portion, a bottom portion, and a rear rising portion are continuous. In the heat insulating box body structure formed by filling the inside with a foamed heat insulating material, the end face material corresponds to a front portion corresponding to a front rising portion, a bottom portion corresponding to a bottom portion, and a rear rising portion. A heat insulating box structure comprising: a rear side portion that is connected to each other, and each portion is connected by combining a tenon and a tenon groove.