JPH0796990B2 - Insulation 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 heat insulating box having a heat insulating material between both inner and outer boxes.

[0002]

2. Description of the Related Art As prior art prior to the present invention, Japanese Utility Model Laid-Open No. 54-129851 (F25D 23/06).
The main body is composed of an inner box, an outer box, and a heat insulating material filled between the boxes, and vertical and horizontal partition bodies are arranged in the front opening to divide the opening into a plurality of sections. In the refrigerator configured as described above, a decorative frame having cutouts at both ends is provided on the facing surfaces of the two partition bodies, and a curved portion having an elastic piece press-contacted to the end face of the decorative frame and a member engaging with the cutouts of the decorative frame. Disclosed is a refrigerator structure characterized in that a corner member having both sides having a joint piece is provided at a corner portion of both partition bodies, and a vertical or horizontal partition body and an inner box are provided at the corner portions. .

[0003]

However, although the above-mentioned technique is to foam-fill the heat insulating material, no measures are taken against foam leakage from the corners. For this reason, at the time of foaming, air and gas can be vented, but foam leakage cannot be prevented.

The present invention has been made in view of this drawback, and provides a heat insulating box for the purpose of preventing foam leakage and simultaneously venting air.

[0005]

As means for achieving the above object, an outer box, an inner box inserted into the outer box, and a gap formed by separating the open end edges of both the inner and outer boxes. A decorative frame that connects the open end edges of the inner and outer boxes, a foam heat insulating material filled between the inner and outer boxes, a corner portion formed in the inner and outer boxes, and the gap formed in the corner portion Provided is a heat-insulating box body comprising: a breathable member made of a soft foamed resin or the like provided in the above, and a corner cover provided on the breathable member for covering the gap formed at the corner portion. To do.

[0006]

It is not necessary to provide an air vent hole in either one of the inner and outer boxes, and air can be vented from the gap between the corners formed at the same time when the decorative frames are attached. Since it is located at each corner, air can be uniformly removed. Furthermore, the breathable member can prevent the foamed heat insulating material from leaking into the gap. Further, after foaming, each gap can be covered with a corner cover.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. 1 shown in FIGS. 1 and 2 is a heat insulator for a refrigerator or the like in which an opening is formed on the front surface which is closed by a heat insulating door (not shown). In the box body, a metal inner box 2 having a front opening, a metal outer box 3 having a front opening in which the inner box 2 is installed, and four resins for connecting the inner and outer boxes to define the opening. A decorative frame 4 and an appropriate number of heat insulating spacers 5a for maintaining both the boxes at a predetermined interval,
It is constituted by a foamed heat insulating material 5 such as hard polyurethane that is foam-filled between the two boxes. Reference numeral 6 denotes a plurality of holes formed at appropriate positions on the front wall 3a of the outer box for attaching hinges (not shown). Reference numeral 7 denotes decorative frames 4 for attaching vertical and horizontal partition bodies (not shown) that divide the opening into a plurality of sections. A plurality of holes, 8 are four resin-made corner covers arranged in the squares of the opening for covering the edges of the decorative frames which are in contact with each other, and 9 is the heat insulating material. An injection hole formed in the bottom wall of the outer box 3 for injecting the undiluted solution of the foam insulation material,
10 is a cap body that closes the injection hole.

Next, assembly and foaming of the heat insulating box 1 will be described with reference to FIGS. As shown in FIG. 3, the inner box 2 has a first step portion 2 in which an elastic seal member 11 made of foamed polyethylene or the like is attached to the inner surface by bending the opening edge outward in a stepwise manner.
a and the stop portion 2 where the inner surface is in contact with the inside end face of the interior of each decorative frame 4.
In addition, the outer box 3 is formed into a U-shaped storage wall 3b formed by bending the inner peripheral edge of the front wall 3a, which is the opening edge, inward, and is formed from foamed polyethylene or the like. A groove 13 for accommodating the elastic seal member 12 is formed.

The outer box is installed with the opening as the upper surface, and the inner box 2 is inserted into the outer box 3 with the opening as the upper surface so that its opening edge is separated from the opening edge of the outer box 3. It is installed on the spacer 5a. Reference numeral 14 shown in FIG. 4 is a breathable member made of soft foamed resin such as moltoprene, which is arranged in an L-shape across both end squares of both boxes 2 and 3, and both outer surface box ends are bonded by an adhesive. 3, both seal members 1
It is attached to 1 and 12.

As shown in FIG. 5, each decorative frame 4 is a seal member 1.
1, the second step portion 2b and the main body portion 4'contacting the stop portion 2c
And the sandwiching portion extending outwardly from the body portion 4'and contacting the outer surface of the first step portion 2a has a dogleg shape,
Elastic holding piece 4a for holding the stepped portion 2a and the seal member 11 together.
And a wedge-shaped insertion portion 4b which is inserted into the groove 13 and comes into contact with the inner wall of the storage wall 3b to press and deform the seal member 12,
Overhanging portion 4c which is in contact with the end face and regulates insertion of the inserting portion 4b
Is integrally formed, and a notch 15 is formed by notching the holding piece 4a and the protruding portion 4c in the vicinity of both end edges. 16
Is an L-shaped metal connecting plate for connecting and connecting the four decorative frames 4 to each other, and a slightly larger auxiliary air-permeable member 17 is attached to the outer surface except the inside of the refrigerator, and one end thereof is orthogonal. A pre-screw 18 is fastened to one of the cutouts 15 at one end of each of the decorative frames 4 arranged so as to be attached to each corner of the opening at the same time when the decorative frame 4 is attached. Due to the arrangement of the connecting plate, the inside of the refrigerator contacts the breathable member 14 to press and deform the breathable member 14 and the seal member 11, and the end face of the outside of the refrigerator is spaced from the front surface of the front wall 3a. The auxiliary breathable member 17, which is positioned rearward and is in contact with the breathable member 14, is pressed and deformed together with the breathable member according to the mounting state of the decorative frame 4.
The other end of the connecting plate is attached with the other decorative frame 4 which is orthogonal to the other end of the connecting plate.
Each of the decorative frames 4, which are fixed to each other 9 and are orthogonal to each other, are connected to each other with their edges separated at each corner of the opening.

Reference numeral 20 denotes an L-shaped gap defined by the end edges of the front wall 3a which are orthogonal to each other, the outer side end surfaces of the connecting plates 16 which are also orthogonal to each other, and the edge of each of the decorative frames 4 which are also orthogonal to each other. The air-permeable member 14 and the auxiliary air-permeable member 17 are partly exposed in these gaps. The inner and outer boxes 2 and 3 are airtightly connected to each other by mounting the decorative frames 4 described above, and the decorative frames 4 are airtightly connected to each other by the connecting plates 16 and the auxiliary ventilation members 17. .

After completion of such assembly, the inner and outer boxes 2 and 3 are fixed by a known jig, and the foaming stock solution is injected into the space between the boxes from the injection hole 9. The foaming undiluted solution gradually foams and grows due to a chemical change, and expels the air and CFC gas between the boxes 2 and 3 through the air permeable member 14 and the auxiliary air permeable member 17 to the outside through the gap 20. Foam filled,
It solidifies to become the foamed heat insulating material 5, and a part of it solidifies while being impregnated in the air permeable member 14 and the auxiliary air permeable member 17.

After the foamed heat insulating material 5 is solidified, the jig is removed, and the corner covers 8 are attached to the respective corners of the opening to cover the connecting plate 16 and the gap 20 as shown in FIG. 6 to manufacture the heat insulating box 1. Is complete. According to this manufacturing method, both opening end edges of the inner and outer boxes 2 and 3 having the opening as the upper surface are separated from each other, and the breathable member 14 made of a soft foam resin or the like is arranged at each corner of the both end edges. After that, the breathable member 1 is provided at both ends of each decorative frame 4 that connects the inner and outer boxes 2 and 3 at right angles to each other.
In order to cover a part of 4 and form a gap 20 between the edges, and to inject the foaming undiluted solution into the space between both boxes to remove the air and gas between the boxes from the breathable member 14 and the gap 20, Even if the mounting position of each decorative frame 4 is slightly displaced when connecting two or three, its end face is in contact with the breathable member 14, and the mounting position is not corrected due to the length of the gap 20 increasing or decreasing. Well, the connection work of both boxes 2, 3 can be done quickly,
Further, it is not necessary to provide an air vent hole in either one of the inner and outer boxes, and air can be vented from the gap formed at the same time as the mounting of each decorative frame, and the gap is located at each corner of the opening. Therefore, air can be discharged uniformly.
Furthermore, the breathable member can prevent the foamed heat insulating material from leaking into the gap. Further, after the foaming, each gap can be covered with a corner cover, and even if the foamed heat insulating material leaks from the gap, it is not necessary to perform a post-treatment.

As described above, according to the present invention, it is possible to simultaneously form the gaps between the inner and outer boxes and the corners that serve as the air and gas vent holes, and to easily attach the decorative frames to quickly connect the boxes. In addition, it is possible to achieve uniform air and gas release while preventing foam leakage from the gap, and to improve the design effect by covering the edges of each decorative frame at the same time as the gap after foaming. You can

[0015]

EFFECTS OF THE INVENTION According to the present invention, at the same time when the inner and outer boxes are connected to each other, gaps at the corners which serve as air and gas vent holes can be formed.
Uniform air and gas can be discharged while preventing foam leakage from the gaps, and the effect of design is achieved by covering the edges of each decorative frame at the same time as the gaps after foaming.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat insulating box body equipped with the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view of a main part of a foaming process for both the inner and outer boxes.

FIG. 4 is an explanatory view of a main part of a foaming process for both the inner and outer boxes.

FIG. 5 is an explanatory view of a main part of a foaming process for both the inner and outer boxes.

FIG. 6 is an explanatory view of a main part of a foaming process for both the inner and outer boxes.

[Explanation of symbols]

 2 Inner box 3 Outer box 4 Decorative frame 5 Foam insulation 8 Corner cover 14 Breathable member 20 Gap

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Claims (1)

[Claims] 1. An outer box, an inner box inserted into the outer box, a gap formed by separating the opening edges of the inner and outer boxes, and a decorative frame connecting the opening edges of the inner and outer boxes. A foamed heat insulating material filled between the inner and outer boxes, a corner formed on the inner and outer boxes, and a breathable member made of a soft foamed resin or the like provided on the gap formed at the corner. And a corner cover which is provided on the breathable member and covers the gap formed at the corner portion.