JP2004317028A - Opening part structure of cooling storage shed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent plastic deformation of a synthetic resin plate while exhibiting the thermally insulating effect inside-outside of a shed. <P>SOLUTION: A horizontal frame 12A constitutes the lower edge of an opening part 14, and is filled with a thermally insulating material 37 by fitting a synthetic resin internal facing plate 25 outside an external facing plate 20 made of a magnetic metallic plate. Thick parts 28A and 28B are formed on the tip and the base end on an inner surface of a cover part 27 of the internal facing plate 25, and an air layer 30 is formed inside. Two projection strips 35 are formed on an inner surface of the tip side thick part 28A. Only the projection strips 35 are formed of a soft resin by two-color molding, and are rich in resiliency in lower rigidity than the other part. When a load such as a storage object is applied to the cover part 27, the projection strips 35 are preferentially elastically deformed, and deformation hardly reaches a body part. Since this side air layer 30 hardly collapses by being partitioned by a partition wall 31, the air layer 30 is maintained, and the thermally insulating effect is exhibited. The load and impact are absorbed by elastic deformation of the projection strips 35, to prevent the plastic deformation and damage of the cover part 27. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure of an opening of a cooling storage.
[0002]
[Prior art]
For example, in a four-door type cooling storage, as shown in FIG. 12 (A), a cross-shaped heat-insulating partition frame 2 is fitted into the front opening of a heat-insulating box 1 constituting a storage main body, so that a doorway is provided. Are formed, and a heat insulating door is swingably opened and closed in each of the openings 3. The partition frame 2 includes, for example, an exterior plate 4 made of a magnetic metal plate and an interior plate 5 made of a synthetic resin, as shown in FIG. The exterior plate 4 is made of a magnetic metal plate in order to adsorb the magnet packing attached to the door and to secure the rigidity of the partition frame 2.
More specifically, the exterior plate 4 is formed in a U-shaped cross section that forms the inner peripheral surface from the edge of the opening, while the interior plate 5 is formed in a slightly larger U-shaped cross section, and the rear surface of the exterior plate 4 is formed. The inner peripheral surface side is covered from the opening side, and the heat insulating material 6 is filled inside. Also, abutting portions 5A are formed at the edges of the front opening of the interior plate 5 by being bent at a right angle, and are applied to the exterior plate 4 to form the air layer 7, thereby further insulating the inside and outside of the refrigerator. I have.
In addition, this kind of opening structure is described in, for example, Patent Document 1.
[0003]
[Patent Document 1]
JP 2000-180038 A
[Problems to be solved by the invention]
By the way, in particular, the horizontal frame 2A among the above-mentioned partition frames 2 is used in such a way that the storage items are temporarily loaded and slipped in and out when the storage items are taken in and out of the refrigerator compartment. The load may be repeatedly applied to the upper surface, and in some cases, the load may be impulsively applied. Therefore, as shown by a chain line in FIG. 12 (B), the plastic-made interior plate 5 is plastically deformed so as to be crushed, and there is a possibility that the bent air layer 7 is lost and the heat insulating effect is reduced. Conversely, since the air layer 7 is provided, the crushing deformation of the interior plate 5 is large, and the appearance is impaired. In an extreme case, the interior plate 5 may be damaged, and further improvement is desired. I was
The present invention has been completed based on the above circumstances, and an object of the present invention is to prevent the plastic deformation of a synthetic resin plate while exhibiting a heat insulating effect inside and outside a refrigerator.
[0005]
[Means for Solving the Problems]
As means for achieving the above object, the opening structure of the cooling storage according to the invention of claim 1 has an opening formed on the front surface of the storage main body formed of a heat insulating box, and is formed from the edge of the opening. A metal plate is disposed over the inner peripheral surface side, and a heat insulating material is filled therein, and a synthetic resin plate is disposed so as to cover an inner peripheral surface portion of the metal plate. Is characterized by having a configuration in which an air layer is divided into a plurality of sections.
[0006]
According to a second aspect of the present invention, in the first aspect, a projection having lower rigidity than a main body is integrally provided on a surface of the synthetic resin plate corresponding to the inner peripheral surface of the metal plate. It has a characteristic where it is.
A third aspect of the present invention is characterized in that, in the second aspect, the projection is formed integrally by two-color molding.
[0007]
Function and effect of the present invention
<Invention of claim 1>
Since the air layer is provided through the partition inside the synthetic resin plate, even when a load is applied to the synthetic resin plate, the air layer is not easily crushed and the air layer is maintained. Therefore, a heat insulating effect inside and outside the refrigerator is exhibited. Further, plastic deformation and breakage of the synthetic resin plate are hardly caused.
<Invention of Claim 2>
When a load is applied to the synthetic resin plate, the protruding portion having low rigidity is elastically deformed preferentially, and the air layer provided inside is more reliably maintained. Further, the load and the impact are absorbed by the elastic deformation of the projection, and the plastic deformation and breakage of the synthetic resin plate are more reliably prevented.
<Invention of Claim 3>
The projection can be easily formed.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In this embodiment, a four-door refrigerator is illustrated.
In FIGS. 1 and 2, reference numeral 10 denotes a heat-insulating box having a front opening constituting the refrigerator main body, in which a refrigerator compartment 11 is provided, and a horizontal frame is provided in the front opening 10A of the heat-insulating box 10. Four openings 14 serving as entrances and exits are formed by fitting the partition frame 12 in which the 12A and the vertical frame 12B are assembled in a cross shape. In each of the openings 14, two of the four edges are formed by the partition frame 12, and the remaining two edges are formed by the openings 10 </ b> A of the heat insulating box 10. A heat insulating door 15 is attached to each of the openings 14 so as to be able to swing open and close.
[0009]
<Opening structure by partition frame 12>
The structure of the horizontal frame 12A of the partition frame 12 will be described with reference to FIGS. The horizontal frame 12A constitutes the lower edges of the two upper openings 14 and the upper edges of the two lower openings 14 at the same time.
The horizontal frame 12A includes an exterior plate 20 and an interior plate 25, as shown in FIG.
The exterior plate 20 is formed by press-forming a magnetic metal plate such as a stainless steel plate, and has a U-shaped cross section in which an inner peripheral surface portion 22 is bent at right angles from upper and lower edges of an edge portion 21 having a predetermined width.
[0010]
One of the interior plates 25 is formed by extrusion molding of a synthetic resin material, and has a substantially U-shaped cross section, which is slightly larger than the exterior plate 20 described above.
More specifically, a cover 27 that covers the outside of the inner peripheral surface 22 of the exterior plate 20 is formed from both upper and lower edges of the rear surface 26 that closes the opening on the rear surface of the exterior plate 20. The inner surfaces are formed thick at the distal end side and the proximal end side of both cover portions 27, respectively, and two air layers 30 are sandwiched between the partition walls 31 in the depth direction in the thickened portion 28A on the distal end side. Are formed side by side, and one air layer 30 is formed in the thick portion 28B on the base end side.
On the inner surface of the thick portion 28A on the distal end side, short ribs 33 are erected at both ends in the depth direction. The interior plate 25 is configured such that the base portion of the inner peripheral surface portion 22 of the exterior plate 20 is sandwiched between the thick portions 28A on the distal end sides of the both cover portions 27, specifically, the ribs 33 of the both thick portions 28A. 20, the front ends of the two cover portions 27 are bent so as to narrow the gap during molding.
[0011]
Further, two projecting ridges 35 are formed on the inner surface of the thick portion 28 </ b> A on the distal end side of both the cover portions 27, respectively. The protruding ridge 35 is formed in a substantially semicircular cross section slightly taller than the above-described rib 33, and one of the ridges 35 is located at a position closer to the opening edge, and the other is slightly rearward from the center in the depth direction. Formed at the location.
Here, the interior plate 25 is formed by extrusion molding of a synthetic resin material as described above, but is formed by two-color molding. For example, the ridge 35 is made of a soft ABS resin, and the other portions are made of an ABS resin. Is the material. In short, the ridge 35 is less rigid and more elastic than the other parts.
[0012]
The horizontal frame 12A is manufactured as follows. The interior plate 25 is fitted from the back to the outside of the exterior plate 20 while expanding the front ends of the two cover portions 27, as shown by the arrow in FIG. 3, and as shown in FIG. Is pushed until it hits the tip of the inner peripheral surface part 22 of. At this time, the thick portion 28 </ b> A on the distal end side of both the cover portions 27 elastically sandwiches the base end sides of both the inner peripheral surface portions 22 of the outer plate 20, and the outer tube 20 and the inner plate 25 are sealed. It is assembled in a shape. In detail, the ribs 33 formed on the inner surface of the thick portion 28A are applied to the distal ends of the two cover portions 27, and the protruding ridge 35 therebetween is slightly compressed and applied. In this state, the space between the exterior plate 20 and the interior plate 25 is filled with a heat insulating material 37 made of foamed resin or the like, and the horizontal frame 12A is completed.
Note that the vertical frame 12B is formed in the same manner, assembled into a cross to form the partition frame 12, and is fitted to the front opening 10A of the heat insulating box 10 to form the opening 14 as described above.
[0013]
In the above-described opening structure using the horizontal frame 12 </ b> A, when the heat insulating door 15 is closed, as shown in FIG. 4, the magnet packing 16 fitted to the peripheral edge of the back surface of the heat insulating door 15 forms the edge of the exterior plate 20. It is adsorbed by the unit 21 and is sealed.
On the other hand, in addition to the cover portion 27 of the synthetic resin interior plate 25 being disposed on the surface side of the inner peripheral surface portion 22 of the exterior plate 20, three air layers 30 are previously provided in the cover portion 27. An air layer 30A is also formed between the thick portions 28A and 28B. These air layers exhibit a heat insulating effect, and the cool air in the refrigerator compartment 11 is transmitted to the edge 21 of the exterior panel 20. Is suppressed as much as possible. That is, since the cooling of the edge portion 21 of the exterior plate 20 is suppressed, dew condensation on the surface thereof, and further, freezing with the packing 16 are prevented.
[0014]
Here, when a storage object is taken in and out of the refrigerator compartment 11, for example, the upper refrigerator compartment 11, there is a case where the storage product is once put on the lower edge of the opening 14 and is put in and out while sliding. More specifically, as shown in FIG. 5, the storage object is placed on the upper surface of the cover portion 27 on the upper side of the interior board 25 and a load is applied, but the cover portion 27 has a low rigidity ridge 35. Deform while elasticizing. When the load is removed, the ridge 35 is restored and deformed, and the cover 27 is restored to the original shape as shown by the chain line in FIG.
That is, when a load is applied, the protrusions 35 are preferentially elastically deformed, so that the inside of the main body portion of the cover portion 27 is unlikely to be deformed. Is provided, so that the air layer 30 provided in the cover portion 27 is maintained as it is at the time of formation even after a load is applied. Therefore, a heat insulating effect inside and outside the refrigerator is exhibited. Further, the load and the impact are absorbed by the elastic deformation of the ridge 35, and the plastic deformation and breakage of the cover 27 are prevented.
[0015]
<Opening structure by opening of heat-insulating box 10>
The structure of the lower edge of the opening 10A of the heat insulating box 10 will be described with reference to FIGS. The lower edge of this opening 10A constitutes the lower edge of the two lower openings 14.
In the heat insulating box 10, an inner box 45 made of a steel plate also opened at the front is housed at an interval in an outer box 40 made of a steel plate opened at the front. For example, taking the lower edge as an example, the opening structure of the heat-insulating box body 10 is a synthetic resin joiner 50 extending over the opening edges of the outer box 40 and the inner box 45. Is mounted and closed.
[0016]
The joiner 50 is formed by extrusion of a synthetic resin material, and is formed in a thick plate shape as a whole. On the inner surface of the joiner 50, a locking claw portion 51 which is elastically hooked or fitted to the locking portions 41, 46 provided at the opening edges of the outer box 40 and the inner box 45 is projected and provided. A locking claw 52 is formed on a rear end side of the inner surface of the inner box 45 so as to lock the right-angle bent portion 47 on the opening edge side of the inner box 45. In addition, short ribs 53 are formed at both ends of the inner surface in the depth direction, the ribs 53 contact surfaces 43 and 48 of the outer case 40 and the inner case 45, which constitute inner circumferential surfaces of the opening 14, respectively.
[0017]
Now, in the joiner 50 of the present embodiment, a plurality of, for example, six air layers 55 are formed side by side in the depth direction with a partition wall 56 interposed therebetween. Further, two ridges 57 are formed on the inner surface of the joiner 50 at a position near the front end and a position near the rear end, respectively. The ridge 57 is formed in a substantially semicircular cross section that is slightly taller than the rib 53 described above.
The joiner 50 is formed by extrusion molding of a synthetic resin material as described above, but is formed by two-color molding. For example, the ridge 57 is made of a soft ABS resin, and the other parts are made of an ABS resin. I have. In short, the ridges 57 are lower in rigidity and more elastic than the other parts.
[0018]
At the opening 14 formed by the lower edge of the opening 10 </ b> A of the heat insulating box 10, although not shown, when the heat insulating door 15 is closed, the magnet packing 16 is adsorbed to the rim 42 of the outer box 40 and is sealed.
The opening edges of the outer box 40 and the inner box 45 are cut off, and a joiner 50 made of synthetic resin is arranged on the surface side of the inner peripheral surfaces 43 and 48 of the two boxes 40 and 45. Since six air layers 55 are formed in advance in the inside 50, they exhibit a heat insulating effect, and it is possible that the cool air in the refrigerator compartment 11 is transmitted to the rim 42 of the outer box 40 as much as possible. Be suppressed. That is, since the cooling of the rim portion 42 of the outer box 40 is suppressed, dew condensation on the surface thereof, and further, freezing with the packing 16 are prevented.
[0019]
In addition, when a stored product is taken in and out of the lower refrigerator compartment 11, the stored product may be temporarily put on the lower edge of the opening 14, that is, on the joiner 50, and may be put in and taken out. Therefore, a load is applied to the joiner 50, but the joiner 50 is deformed while elastically shrinking the ridge 57 having low rigidity. When the load is removed, the ridge 57 is restored and deformed, and the joiner 50 is restored to the original shape. I do.
That is, when a load is applied, the protrusions 57 are preferentially elastically deformed, so that the inside of the main body of the joiner 50 is unlikely to be deformed. In addition, a partition wall 56 is provided between the air layers 55 to collapse. Because of the difficulty, even after a load is applied, the air layer 55 provided in the joiner 50 is maintained as it was at the time of formation. Therefore, a heat insulating effect inside and outside the refrigerator is exhibited. In addition, the load and the impact are absorbed by the elastic deformation of the ridges 57, and the plastic deformation and breakage of the joiner 50 are also prevented.
[0020]
<Related technology 1>
The related technique 1 shown in FIG. 8 relates to a structure of a partition frame 60, and an interior plate 65 is formed by extrusion molding of a synthetic resin material into a substantially U-shaped cross section that is slightly larger than a metal exterior plate 61. However, two protruding ridges 69 are formed on the inner surfaces on the distal end sides of both cover portions 67. The ridge 69 is formed in a substantially semicircular cross section that is taller than the rib 68 at the tip of the cover portion 67, and the ridge 69 is formed to have a lower rigidity than the other parts by two-color molding. . Further, at the time of molding, the front end sides of both cover portions 67 are bent so as to narrow the gap.
[0021]
The interior plate 65 is fitted from the back to the outside of the exterior plate 61 while expanding the tip of the cover portion 67, and the rear surface portion 66 abuts on the tip of the inner peripheral surface portion 63 of the exterior plate 61 as shown in FIG. When it is pushed in, a rectangular cylinder in which the outer plate 61 and the inner plate 65 are hermetically sealed with the distal end sides of both the cover portions 67 sandwiching the base end side of the inner peripheral surface portion 63 of the outer plate 61 while elastically shrinking the ridge 69. It is assembled in a shape. From such a state, the space between the exterior plate 61 and the interior plate 65 is filled with the heat insulating material 70 made of a foamed resin or the like, and the partition frame 60 is completed.
The ridge 69 functions as a sealing material to prevent leakage at the time of filling the heat insulating material 70, and also prevent water from entering the partition frame 60 after completion.
<Related technology 2>
As shown in FIG. 9, the ridge 69A provided on the inner surface of the cover 67 of the interior board 65 may have an annular cross section.
[0022]
<Related technology 3>
In the related art 3 shown in FIG. 10, a thick plate portion 71 that is wide in the depth direction is formed on the inner surface of both the cover portions 67 of the interior plate 65, and the thick plate portion 71 is made of a soft resin by two-color molding. Has become.
In the related technique 3, even when a load is impulsively applied by, for example, placing a storage object on the cover portion 67 of the interior plate 65, the thick plate portion 71 functions as a cushion, and the cover portion 67 is deformed. And breakage are prevented. In addition, it is effective in preventing the gap between the interior board 65 and the exterior board 61.
[0023]
<Related technology 4>
In the related art 4 shown in FIG. 11, regarding the opening structure of the heat insulating box, a joiner 82 made of a synthetic resin is mounted over an opening edge of the outer box 80 and the inner box 81 made of a metal plate. On a surface facing the box 80 or the inner box 81, a thick plate portion 83 made of a soft resin is similarly integrally formed by two-color molding.
Similarly, even when a load is imposed on the joiner 82 by impact, the thick plate portion 83 functions as a cushion, and deformation and breakage of the joiner 82 are prevented. It is also effective for preventing the joiner 82 from shifting.
[0024]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and furthermore, besides the following, within the scope not departing from the gist. Can be implemented with various modifications.
(1) In the above embodiment, the cover portion of the interior board constituting the partition frame may be thick over the entire width in the depth direction, and a large number of air layers may be formed over the entire width within the thick portion.
(2) The cross-sectional shape of the ridge made of a soft resin, the number of ridges to be provided, and the location of the ridges can be appropriately changed according to the purpose and the like.
(3) Even if only a plurality of air layers are formed inside without forming a soft resin ridge on the cover portion or the joiner of the interior board, it is difficult to collapse and the air layer can be maintained. It is included in the technical scope of the present invention.
[Brief description of the drawings]
1 is an external perspective view of a refrigerator according to an embodiment of the present invention. FIG. 2 is a perspective view of a heat insulating box. FIG. 3 is an exploded sectional view of a partition frame. FIG. 1 is an enlarged cross-sectional view taken along line XX of FIG. 1. FIG. 5 is a partial cross-sectional view showing a state where a load is applied to a horizontal frame. FIG. 6 is an exploded cross-sectional view of an opening of the heat insulating box. FIG. 8A is a cross-sectional view of the interior plate of the related art 1 showing the structure; FIG. 9B is a cross-sectional view of the partition frame of the related art 1 FIG. Sectional view of plate (B) Sectional view of the same partitioning frame [FIG. 10] Sectional view of partitioning frame of related art 3 [FIG. 11] Cross sectional view of opening of heat insulating box of related technique 4 [FIG. 12] (A) Conventional Perspective view of an example heat insulating box (B) Cross-sectional view of the partition frame
DESCRIPTION OF SYMBOLS 10 ... Heat insulation box 10A ... Front opening (of heat insulation box 10) 11 ... Refrigerator room 12 ... Partition frame 12A ... Horizontal frame 14 ... Opening 20 ... Exterior plate (metal plate) 21 ... Edge 22 ... Inner peripheral surface 25 ... Interior board (synthetic resin board) 27 ... Cover part 28A, 28B ... Thick part 30 ... Air layer 31 ... Partition wall 35 ... Protrusion (projection) 37 ... Insulation material 40 ... Outer box (metal plate) 42 ... Mouth edge 43 ... Inner peripheral surface 45 ... Inner box (metal plate) 48 ... Inner peripheral surface 50 ... Joiner (synthetic resin plate) 55 ... Air layer 56 ... Partition wall 57 ... Protrusion (protrusion)

Claims (3)

An opening is formed on the front surface of the storage main body composed of a heat insulating box, and a metal plate is arranged from the rim side of the opening to the inner peripheral surface side, and the inside is filled with a heat insulating material. In the case where the synthetic resin plate is arranged so as to cover the inner peripheral surface portion,
An opening structure of a cooling storage, wherein an air layer is formed in a plurality of partitions inside the synthetic resin plate. 2. The opening of the cooling storage according to claim 1, wherein a projection having lower rigidity than a main body is integrally provided on a surface of the synthetic resin plate corresponding to the inner peripheral surface of the metal plate. Part structure. 3. The opening structure of a cooling storage according to claim 2, wherein the projection is formed integrally by two-color molding.

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