JP4030567B2 - Vending machine insulation panel - Google Patents

Description

  The present invention relates to a heat insulating panel used in a vending machine.

A conventional heat insulation panel of a vending machine is known in which a vacuum heat insulating material and a foam material are interposed between two surface materials, and a surface sheet is formed of a non-metallic material such as paper or resin. (For example, see Patent Documents 1 and 2).
JP 2004-234392 A JP 2002-175563 A

In this conventional heat insulation panel, paper has a large coefficient of linear expansion, so when the topsheet is made of paper, it tends to warp and tear due to the temperature difference between the temperate zone and the cold zone while being used inside the vending machine. It deteriorates and the heat insulation function tends to be lowered. In addition, since the strength and rigidity of paper is much lower than that of metal, when setting a heat insulation panel in a vending machine, the top sheet is pierced in contact with the protrusions of the adjacent product storage, There exists a possibility that a vacuum heat insulating material may be damaged, and a heat insulation function will fall. Also, in the process of manufacturing the heat insulation panel, when the resin liquid is injected into the space formed by the two paper surface materials and solidified, the surface material is likely to wrinkle, and there is a possibility that the appearance will be poor when completed. is there.
In addition, since the resin also has a large linear expansion coefficient, the top sheet using the resin is likely to warp due to the temperature difference between the temperate zone and the cold zone inside the vending machine, like the paper top sheet.

  Therefore, the present invention provides a surface sheet made of a non-metallic lightweight material and is light in weight as a whole, and can prevent damage to the internal heat insulating material while being a non-metallic surface sheet, and has a constant thermal insulation power. Further, it is an object of the present invention to provide a heat insulating panel for a vending machine that can be maintained at a high temperature and is not easily warped due to a temperature difference.

In order to achieve the above object, a heat insulation panel of a vending machine according to the present invention includes two rectangular topsheets arranged in parallel at a predetermined interval, and interposed along each side of the topsheet. An edge member, a foam heat insulating material solidified in the space formed by the edge member and the top sheet, and a flat sealing bag integrated with the foam heat insulating material solidified in the space. In addition, the surface sheet is made of a glass fiber-containing sheet, and is further sealed in a flat plate shape integrated with the foam insulation material solidified in the space. A vacuum heat insulating material surrounded by a bag, and the inner surface of the top sheet is in contact with all of the both surfaces of the vacuum heat insulating material, and all the both surfaces of the vacuum heat insulating material and the inner surface of the top sheet. There is foam insulation between the sides. Further, a screw receiving member having a female screw hole or a lower hole for screwing a screw is disposed integrally with the foam heat insulating material in the space, and the screw screw receiving The member is in contact with the inner surface of the two top sheets .

The present invention has the following remarkable effects.
In the heat insulating panel of the vending machine according to the present invention, since the two surface sheets sandwiching the foam heat insulating material are made of glass fiber-containing sheets, compared to the case where the surface sheet is made of metal, Weight reduction can be achieved. In addition, since the glass fiber has a low coefficient of linear expansion, it is difficult to thermally expand, and even when used on the partition walls of two spaces having a large temperature difference in the vending machine, the warp and dimensional change of the surface sheet are unlikely to occur. Therefore, the deformation | transformation and deterioration of the heat insulation panel by use in a vending machine can be prevented. Moreover, since the surface sheet has sufficient strength, the vacuum heat insulating material can be prevented from being damaged even if there is contact of protrusions on the outside, and the heat insulating function is maintained.
Moreover, since it has contacted the inner surface of the surface sheet over all the both surfaces of a vacuum heat insulating material, a vacuum heat insulating material is arrange | positioned so that it may occupy between the surface sheets to the maximum, and a big heat insulation function can be exhibited .

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
1 to 5 show an embodiment of a heat insulating panel of a vending machine according to the present invention. This heat insulating panel includes two rectangular surface sheets 4, 4 arranged in parallel at a predetermined interval. The edge members 20 and 21 interposed along the sides 24 and 24 of the surface sheets 4 and 4 and the foam heat insulating material solidified in the space 2 formed by the edge members 20 and 21 and the surface sheets 4 and 4 1 is provided.

  First, the top sheet 4 will be described. Each surface sheet 4 has a vertically long rectangular shape and is made of a glass fiber-containing sheet. This glass fiber-containing sheet is, for example, a sheet-like composite material in which a thermoplastic resin such as a polypropylene resin is contained in a glass fiber, and long glass fibers are uniformly arranged in one direction or in an orthogonal shape (cross shape). Is. The glass fiber content is preferably about 70% by weight. The surface sheet 4 has a thickness of about 0.15 mm to 0.45 mm, has flexibility, and can be heat-processed at a low pressure due to the thermoplastic properties of polypropylene. In addition, it has sufficient strength and rigidity, hardly undergoes dimensional change due to thermal expansion or moisture absorption drying, and does not warp. Further, since the surface sheet 4 contains a thermoplastic resin such as a polypropylene resin, the permeation of moisture into the inside is prevented, the deterioration of the urethane foam of the foam heat insulating material 1 is prevented, and the heat insulation performance is not lowered. .

  Next, the edge members 20 and 21 will be described. Of the sides 24..., 24... Of the top sheet 4, 4, the front side vertical sides 24 a and 24 a are provided with edge members 20 made of a packing member 8 described later, and the sides 24. Among them, an edge member 21 composed of an elongated quadrangular columnar foam member 9 is interposed in the vertical sides 24b, 24b on the back side, the upper horizontal sides 24c, 24c, and the lower horizontal sides 24c, 24c. The foam member 9 is made of, for example, foam polystyrene, foam polyethylene, foam polyurethane, or the like. That is, a rectangular frame (for sealing) is formed from the edge member 20 and the edge members 21... And is sandwiched between the two surface sheets 4 and 4 along the peripheral edge. In addition, the packing member 8 is formed by integrally forming a long side-shaped hard side portion 28 and a soft side portion 29 from rubber or plastic by two-color simultaneous molding (see FIGS. 9 and 10). Of these, the hard side portion 28 is interposed (clamped) on the front sides 24a and 24a of the topsheets 4 and 4, and the soft side portion 29 protrudes from the vertical sides 24a and 24a to the front side. The soft side portion 29 is formed in a vertically long thin cylindrical shape. The soft side portion 29 is in close contact with the rear surface of the front door that is closed after being set in the vending machine to prevent lateral temperature movement in the vending machine. In addition, let the side by which the packing member 8 is arrange | positioned in the state in which the heat insulation panel was set in the vending machine be a near side.

Reference numeral 3 denotes a flat vacuum heat insulating material which is disposed in the space 2 together with the foam heat insulating material 1 solidified in the space 2. The vacuum heat insulating material 3 includes a flat heat insulating core material 23 and a sealing bag 13 that seals and encloses the heat insulating core material 23 in a vacuum state. The heat insulating core material 23 is a porous material in which open cells are formed on the whole, such as glass wool and polyurethane foam. Further, the sealing bag 13 has a multilayer structure in which aluminum-deposited PET and aluminum foil are laminated, and, if desired, nylon, high-density polyethylene and the like are further laminated. When the heat insulating core member 23 is sealed inside the sealing bag 13, the inside is kept in a vacuum state by evacuation.
The foam heat insulating material 1 is a heat insulating material such as foamed polyurethane in which a resin liquid is foamed and solidified.
The vacuum heat insulating material 3 is disposed at a certain distance from the edge members 20 and 21 at a lower position in the space 2 and is integrated with the foam heat insulating material 1.
Moreover, the vacuum heat insulating material 3 is in contact with the inner side surfaces 14 and 14 of the surface sheets 4 and 4 over the both surfaces 3a and 3a (see FIG. 5), and the vacuum heat insulating material 3 and the two surface sheets 4 , 4 is not interposed between the foam insulation 1. Thus, since the vacuum heat insulating material 3 occupies the space between the top sheets 4 and 4 to the maximum, the heat insulating power of this portion is particularly large.
And even if the heat insulation panel is set inside the vending machine and the protrusions of the adjacent product storage are in contact with the surface sheet 4, the surface sheet 4 made of the glass fiber-containing sheet is not torn, The vacuum heat insulating material 3 is prevented from being damaged, and the heat insulating function is prevented from being lowered.

  Further, a screw receiving member 25 having a female screw hole or a lower hole (hereinafter referred to as “female screw hole”) for screwing a screw is disposed integrally with the foam heat insulating material 1 in the space 2. Has been. The screw receiving member 25 is made of plastic or the like and has a female screw hole or the like penetrating therethrough. The screw receiving member 25 is disposed so that the female screw holes and the like open to the inner side surfaces 14 and 14 of the surface sheets 4 and 4 in the space 2 before injection of the resin liquid (near the four corners thereof). It is in contact with the inner side surfaces 14 and 14 of the surface sheets 4 and 4 over both surfaces, and is integrated with the foam heat insulating material 1 in which the resin liquid injected into the space 2 is solidified (see FIG. 3). When the heat insulating panel is set in the vending machine and fixed to the adjacent commodity storage or the like, the screw is screwed into the female screw hole of the screw receiving member 25 while being inserted into the top sheet 4. The screw receiving member 25 may be made of metal other than plastic, and may be plate-shaped when it is made of metal. The shape of the screw receiving member 25 can be changed in various ways.

Moreover, although illustration is abbreviate | omitted, the manufacturing method (procedure) of a heat insulation panel is demonstrated. First, two rectangular topsheets 4 and 4 are arranged in parallel at a predetermined interval, protective plate members 5 and 5 having a vacuum heat insulating material 3 sandwiched between the topsheets 4 and 4, a screw receiving member 25, A flat plate-like intermediate having an internal space 2 with the inner surfaces 14 and 14 in contact with each other and the edge members 20 and 21 interposed along the sides 24. Form the body. Then, the box set in the foaming jig is pressed from above and below with a press device, and a nozzle is inserted into the injection hole formed in the edge member 21 to inject the resin liquid into the space 2. The foamed resin is filled in the internal space 2 by foaming. And when the resin liquid solidifies and becomes the foam heat insulating material 1, it takes out from a jig | tool. In this way, the packing member 8 can also be integrated with the injection and solidification of the resin liquid by molding (close molding) that integrally foams in the jig, so that unlike the extrusion molding, the packing member 8 is This saves you the trouble of retrofitting .

  As described above, the heat insulating panel of the vending machine according to the present invention includes two rectangular topsheets 4 and 4 arranged in parallel at a predetermined interval, and the sides 24 and 24 of the topsheets 4 and 4. Edge members 20 and 21, and foam insulation 1 solidified in the space 2 formed by the edge members 20 and 21 and the surface sheets 4 and 4, and the surface sheet 4 is made of glass fiber. Since it consists of a containing sheet | seat, the weight reduction of the whole heat insulation board can be achieved compared with the case where a surface sheet is made from metal. Further, since the glass fiber has a low coefficient of linear expansion, it is difficult to thermally expand, and even when it is used for the partition walls of two spaces having a large temperature difference in the vending machine, the warp and dimensional change of the surface sheet 4 hardly occur. Therefore, the deformation | transformation and deterioration of the heat insulation panel by use in a vending machine can be prevented. Moreover, since the surface sheet 4 has sufficient strength, it is possible to prevent damage to the heat insulating material against the contact of protrusions on the outside, and the heat insulating function is maintained.

  In addition, a vacuum heat insulating material 3 surrounded by a flat sealing bag 13 integrated with the foam heat insulating material 1 solidified in the space 2 is provided, and the surface sheet 4 extends over both surfaces 3a and 3a of the vacuum heat insulating material 3. , 4 are in contact with each other, the vacuum heat insulating material 3 is disposed so as to occupy the space between the top sheets 4 and 4 and can exert a large heat insulating function.

Further, since the screw receiving member 25 having a female screw hole or a lower hole for screwing the screw is disposed integrally with the foam heat insulating material 1 in the space 2, the top sheet 4 is made of a non-metal. Even if the screw does not have a strength capable of being directly screwed, the screw can be screwed. Therefore, a heat insulation panel can be fixed to the goods storage etc. which adjoin within a vending machine using a screw | thread .

It is a perspective view which shows one Embodiment of the heat insulation panel of the vending machine which concerns on this invention. It is a principal part enlarged front view. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is principal part sectional drawing .

Explanation of symbols

1 foam insulation 2 space 3 vacuum heat insulator 3a surface 4 surface sheet
13 sealed bags
14 Inside
20 Edge member
21 Edge member
24 sides
25 Screw receiving member

Claims (1)

Two rectangular topsheets (4) and (4) arranged in parallel at a predetermined interval, and interposed along each side (24) and (24) of the topsheet (4) and (4) An edge member (20) (21), and a foam heat insulating material (1) solidified in the space (2) formed by the edge member (20) (21) and the top sheet (4) (4), In the insulation panel of the vending machine
The surface sheet (4) is made of a glass fiber-containing sheet, and is further surrounded by a flat sealing bag (13) integrated with the foam insulation (1) solidified in the space (2). The heat insulating material (3) is provided, and the inner surfaces (14) and (14) of the surface sheets (4) and (4) are in contact with each other over both surfaces (3a) and (3a) of the vacuum heat insulating material (3). Between the entire surfaces (3a) and (3a) of the vacuum heat insulating material (3) and the inner side surfaces (14) and (14) of the surface sheets (4) and (4), a foam heat insulating material (1) Further, a screw receiving member (25) having a female screw hole or a lower hole for screwing a screw is integrally formed with the foam heat insulating material (1) in the space (2). Furthermore, the screw receiving member (25) is in contact with the inner side surfaces (14) and (14) of the two top sheets (4) and (4). Insulation panel of a vending machine to be.

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