JPH042874B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] Industrial Field of Application The present invention relates to a heat insulating box body in which a foamed heat insulating material is filled between the inner and outer boxes provided with a gap between them. The present invention relates to a support member that is provided on a floor and comes into contact with a floor surface.

Conventional Technology Conventionally, this type of insulated box is often installed in stores due to its characteristics. In order to support the weight of the box itself and to allow movement of the box, casters have often been used as support members provided at the bottom of the box and in contact with the floor. There are various things that disclose this, and one example is the 60-
There is a publication number 162882.

Problems to be Solved by the Invention In the conventional technology described above, casters are attached to the bottom of the box, but when moving the installation location, the floor surface is not necessarily flat. There was a problem in that the casters collided with or got stuck in the unevenness of the floor surface, and a considerable impact was applied to the caster mounting part, causing deformation or distortion of the mounting part, or the caster tilting. .

Therefore, the present invention provides a heat insulating box body in which the strength of the mounting portion of the support member that is provided at the bottom of the box body and comes into contact with the floor surface is improved.

[Structure of the Invention] Means for Solving the Problems The insulating box of the present invention includes an outer box having a curved surface at each corner of the circumferential side, and an inner box provided inside with a space between the outer box and the outer box. The space formed by the box, the top plate that is provided at a distance below the bottom wall of the inner box and defines a machine room together with the lower part of the outer box, and the outer box, the inner box, and the top plate is filled. The supporting member is attached to the lower end of each corner of the outer box, and the annular frame member is provided inside the lower end of the outer box, and the supporting member is attached to two adjacent sides of the lower end of the outer box. It consists of a mounting plate fixed to the frame member corresponding to the corners and two sides of the mounting plate, and leg members provided on the lower surface of the mounting plate and abutting on the floor surface.

Function Since the mounting base 23 of the mounting plate 21 is fixed so as to straddle the corner portions of two adjacent sides of the lower end of the outer box 3, it acts to suppress vertical twisting of the two sides, and It acts to suppress the increase/decrease in the corner angle of the two sides, and reinforces the lower end corner portion of the outer box 3 as a whole. Also, on the bottom surface of this mounting plate 21 are casters 2 as leg materials.
5 is attached, even if the casters 25 collide with unevenness on the floor or get stuck while the box 2 is moving, the impact from the casters 25 is not directly transmitted to the outer box 3, and the impact to the box 2 is prevented. The force is distributed to the fixed frame members 12, 12.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

Reference numeral 1 denotes a low-temperature refrigerator having an opening on the top surface, and will be explained using a spot-type refrigerating case as an example. 2
1 is an insulated box body serving as the main body of the low-temperature refrigerator 1, which includes an outer box 3 made of metal, for example, with curved surfaces formed at each corner of the circumferential side, a bottom wall and an opening on the top surface provided at a distance from the outer box 3. an inner box 4 made of metal having a
It is composed of a top plate 5 that defines a machine room together with the lower part of the box, and a foamed heat insulating material 6 such as foamed polyurethane filled between the inner box 4 and the outer box 3 and between the inner box 4 and the top plate 5. has been done. Note that a cooling pipe 7 is disposed in contact with the outer surface of the inner box 4.

On the other hand, curved surfaces are formed at four corners of the circumferential side of the outer box 3, and slits 8 for sucking or blowing air are formed at the lower part of the circumferential side.
In addition, since the bent parts are usually formed using the PCM (pre-coat manufacturing) manufacturing method, in which a metal plate is painted and then bent to form each corner, each corner is formed after painting. Each corner is formed into a curved surface to avoid paint loss at the bent portion when the corners are bent. At the lower end of the outer box 3, an inward flange 9 whose inner side is bent horizontally is formed. In addition, inner box 4
Curved surfaces are also formed at the four corners of the circumferential side. At the lower part of the inner surface of each of the four corners of the outer box 3, reinforcing plates 10 made of metal, for example, are provided which are curved to bulge from the outside, avoiding the slits 8. A flexible cushioning material 11 made of foamed polyethylene or the like is provided.

Reference numeral 12 denotes an annular frame member placed on the inward flange 9 so as to come into contact with the inside of the lower end of the outer box 3. For example, the annular frame member 12 is formed by bending a metal plate to have a substantially U-shaped cross section. It includes pieces 13 and 14, and also forms a corner portion 15 corresponding to the shape of the corner. The lower end of the reinforcing plate 10 is in contact with the frame member 12, and the lower end thereof is in contact with the outer rising piece 14 of the frame member 12.
It is fixed, for example, by electric welding, so that it overlaps the inner surface of the. Further, the upper part of the reinforcing plate 10 extends upward from the top plate 5 of the machine room, and its upper end is located within the six layers of foam heat insulating material. In addition, the frame member 12 is the outer box 3
This is to improve the strength of the lower end.

Next, a method for manufacturing the frame member 12 will be explained.
FIG. 4 shows the expanded state of the frame member 12, in which notches are formed at four locations. This notch is frame member 1
A corner side 16 formed corresponding to the corner portion 15 of No. 2, opening sides 17, 17 extending from both ends of this corner side 16, and these opening sides 17, 17.
It is formed from contact sides 18, 18 extending from.
Then, the bent side 1 shown by the two-dot chain line in FIG.
9 and 19 to form the inner and outer rising pieces 13 and 14, R bending is performed on the corner portion 15 to bring the contact sides 18 and 18 into contact with each other,
The frame member 12 is manufactured by connecting each of them, for example, by electric welding. However, the reality is that the corner part 15 can only be formed by the outer rising piece 14, and when forming the corner part 15, the part surrounded by the corner side 16 and the opening sides 17, 17 is exactly the part of the frame member 1.
2 (this part will be referred to as the cutout part P). Due to the presence of this cutout portion P, there remains a drawback that the corner portion of the inner rising piece 13 is weaker than the corner portion 15 in terms of strength.

Therefore, in order to improve the strength of the corner portions of the frame member 12, a mounting plate 21 is provided at the lower end of each corner of the outer box 3. The mounting plate 21 is made of a metal plate, for example, and is in contact with the lower surface of the inward flange 9 of the outer box 3 as shown in the figure, and is attached to the corners of two adjacent sides of the lower end of the outer box 3, that is, the inward flange, using screws 22. A mounting base 23 fixed to straddle the frame member 12 corresponding to 9 and 2 sides, and this mounting base 2
3, and when fixed, the adjacent 2 of the frame member 12 looks as if it were installed at the corners of the two sides.
The flange 24 is located at the corner formed by the inner rising pieces 13, 13 of the sides. Casters 25 are fixed to the lower surface of the mounting base 23 by screws 26 as leg members that come into contact with the floor surface. Note that the caster 25 of the mounting plate 21 constitutes a support member 20. However, the leg material is not limited to the caster 25, and may be a pillar.

On the other hand, the top plate 5 is formed of a metal plate, and arc-shaped notches are formed at the four corners corresponding to the reinforcing plate 10, and between each notch, a flange 27 is formed by bending downward. It is formed. and,
A sealing material 28 is provided between the flange 27 and the inner surface of the outer box 3. Note that a foamed heat insulating material 6 is in contact with the upper surface of the top plate 5.

A reinforcing member 30 is formed by bending a metal plate, for example, and maintains the distance between the top plate 5 and the lower end of the outer box 3 at a predetermined length. The lower end of this reinforcing member 30 abuts against the frame member 12 and is fixed by welding or the like, and a support portion 31 extends upward from this lower end along the inner surface of the outer box 3.
, a placing part 32 that is bent from this supporting part 31 and extends inwardly while coming into contact with the lower surface of the top plate 5;
2, for example, an upright portion 34 extending upward from the tip thereof and passing through an opening 33 formed in the top plate 5, for positioning the top plate 5 when the top plate 5 is placed thereon. The support part 31 and the mounting part 32 are formed to have a substantially U-shaped cross section, and holes 35, 35 are formed in the rising part 34 for passing the heat insulating material during foaming. Note that the opening 33 is sealed by a sealing member 36 after the rising portion 34 has penetrated.

That is, by fixing the mounting base 23 to the corner portions of the two adjacent inward flanges 9, 9 at the lower end of the outer box 3 and the corresponding frame members 12, 12, the inward flanges 9 and the frame members 12, 12 are fixed. It is possible to avoid deformation such as twisting in the vertical direction of the frame member 12, and also avoid deformation in the direction of increasing or decreasing the corner part, that is, in the horizontal direction, so that the corner part 15 of the frame member 12 is It is possible to overcome the weakness in terms of strength of the inner rising piece 13 due to the fact that it can only be formed in the shape of the inner rising piece 14, and the overall strength of the lower end of the outer side 3 can be improved. and,
Casters 2 as leg materials are attached to the lower surface of the mounting base 23.
5 can be attached to the mounting plate 21, so that the mounting plate 21 can serve both as a reinforcing material for the corner portion of the lower end of the outer side 3 and as a mounting member for the leg members. In addition, the flange 24 formed by bending the mounting base 23 allows positioning when mounting to a corner, and also suppresses deformation of the corner of the inner rising pieces 13, 13. Furthermore, even if the casters 25 collide with or get stuck in the unevenness of the floor surface when the box body 2 is moved, the impact (force) from the casters 25 will not be directly transmitted to the lower end of the outer box 3, and the mounting base 23 will prevent the casters from colliding or getting stuck in the unevenness of the floor. In addition, the impact force is further dispersed to the frame member 12, thereby minimizing the influence of external force.

[Effects of the Invention] As detailed above, according to the present invention, the mounting plate is fixed to the corner portions of two adjacent sides of the lower end of the outer box and the frame members corresponding to the two sides, so that the corner portions and the frame Deformation such as twisting of the member in the vertical direction can be avoided, and deformation in the direction of increasing or decreasing the corner portion can also be avoided. and,
Since the legs that come into contact with the floor can be attached to the mounting plate, the mounting plate can be used as a dual-purpose member that functions both as an attachment member for the legs and as a reinforcing material for the corners, reducing the number of parts. can be promoted.

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention. Figure 1 is an enlarged perspective view of the lower corner of the insulation box, Figure 2 is an external perspective view of the insulation box, and Figure 3 is a cross section taken along line AA in Figure 1. 4 is a developed view of the frame member, FIG. 5 is a perspective view of the frame member, and FIG. 6 is a sectional view taken along line BB in FIG. 1. 2...Insulated box body, 3...Outer box, 4...Inner box, 5
... Top plate, 6 ... Foam insulation material, 9 ... Inward flange, 12 ... Frame member, 13 ... Inner rising piece, 1
4... Outer standing piece, 15... Corner part, 20...
...Supporting member, 21...Mounting plate, 23...Mounting base, 24...Flange, 25...Legs.

Claims (1)

[Claims] 1. An outer box in which a curved surface is formed at each corner of the circumferential side, an inner box provided inside the outer box with a space therebetween, and an inner box provided with a space below the low wall of the inner box. a top plate that defines a machine room together with the lower part of the outer box;
A heat insulating box body comprising a foamed heat insulating material filled in a space formed by the outer box, the inner box and the top plate, a support member attached to a lower end of each corner of the outer box, and a support member attached to the lower end of the outer box inside the lower end of the outer box. an annular frame member provided at the bottom end of the outer box; A heat insulating box body characterized by comprising leg members provided on the lower surface and in contact with the floor surface.