JP6189621B2 - Cooling storage - Google Patents

Description

  The present invention relates to a cooling storage compartment that is partitioned into a plurality of storage chambers by providing a partition wall in a heat insulating box.

  Conventionally, the thing of the following patent document 1 is known as a refrigerator-freezer which is an example of this kind of cooling storage. This is done by attaching a partition wall to a heat insulating box body with a front opening formed by filling a heat insulating material in an outer shell body in which an outer box and an inner box made of metal plates are arranged at intervals. It has a structure in which a refrigerator compartment and a freezer compartment are partitioned on both sides of the wall. And in the part where the end surface of the partition wall is applied to the inner surface such as the back surface or the bottom surface of the heat insulation box, a structure in which the seal material is applied to the end surface of the partition wall and then applied to the predetermined inner surface of the heat insulation box. Therefore, it is designed to prevent leakage of cold air.

JP-A-9-72652

However, in the above-mentioned conventional one, even if the sealing material affixed to the end face of the partition wall is applied to the inner surface of the heat insulation box, there is still a possibility that cold air leakage may still occur due to a gap being partially formed, etc. Since the metal plate constituting the inner surface is a so-called single piece continuous across the refrigerator compartment and the freezer compartment, leakage of cold air due to heat conduction could not be ignored.
The present invention has been completed based on the above circumstances, and an object of the present invention is to more reliably prevent cold air leakage between adjacent storage rooms.

  The present invention provides a heat insulating box body having a front opening formed by filling a heat insulating material in an outer shell body in which an outer box and an inner box made of metal plates are arranged at intervals, and the heat insulating box body includes a plurality of storage chambers. A partition wall mounted in the heat insulation box to form a partition, and an end portion of the partition wall is provided in a region facing an end surface of the partition wall on an inner surface of the heat insulation box. A concave surface to be fitted is formed, and the concave surface is formed in a form in which an intermediate member made of synthetic resin is interposed between the divided edges of the metal plate constituting the inner box. Have

  By fitting the end portion of the partition wall into the concave surface provided on the inner surface of the heat insulating box, a gap is prevented from being generated, and cold air leakage due to circulation along the inner surface is prevented. Further, since a synthetic resin interposition member is interposed in the middle of the concave surface and insulated, cold air leakage due to heat conduction is prevented. As a result, it is possible to prevent cold air leakage between adjacent storage chambers more reliably.

The following configuration may also be used.
(1) Each divided edge of the metal plate is formed as an L-shaped edge that is bent twice at right angles to the back side and the other side, while the interposition member forms a band with a constant width. On the back side of the main body plate, a pair of locking plates having locking portions at the front end edges are provided so as to be elastically displaceable in a back-to-back posture, and protruding plates protruding in the corresponding directions at the respective L-shaped end edges, An abutting plate that is insertable between each locking plate and the main body plate and is bent at a right angle to the back side of the L-shaped end edge is provided on each side edge of the main body plate. A locked portion that is locked to the locking portion and is prevented from coming off when it is pushed to a normal position corresponding to the above is provided.

Projecting plates facing each other at the L-shaped edge of the divided metal plate are inserted into both side edges of the back side of the main body plate of the interposition member while elastically displacing the locking plate, and the abutting plate at each L-shaped edge However, when it is pushed to the normal position where it hits the side edge of the main body plate, each locking plate is restored and displaced, and the locked portion is locked to the locking portion to prevent it from coming off, thereby forming a concave surface. The
The normal width dimension of the concave surface is ensured only by inserting a normal amount of the divided protruding plate of each L-shaped edge into the side edge of the main body plate of the interposition member. In addition, after the inner box is assembled while forming the concave surface, the interposition member is reliably prevented from coming off from the L-shaped end edge until it is set on the foaming jig.

(2) While the concave surface is formed on the bottom surface of the heat insulation box, a pair of plate members are disposed to face each other between the upper surface of the partition wall and the ceiling surface of the heat insulation box, thereby insulating the foam. A heat insulating material accommodation chamber capable of accommodating the material is formed.
When a concave surface is formed on the bottom surface of the heat insulation box, a gap between the top surface of the heat insulation box and the ceiling surface of the heat insulation box is created by fitting an existing partition wall with a tall height into the concave surface. it can. Therefore, a pair of plate members are arranged in the gap to form a heat insulating material accommodation chamber, and the foam heat insulating material is accommodated in the heat insulation material accommodation chamber, thereby filling the gap formed in the ceiling portion with the foam heat insulating material. It will be in the form While using an existing partition wall, it is possible to prevent cold air leakage at the ceiling between adjacent storage rooms.

  According to the present invention, it is possible to prevent cold air leakage between adjacent storage chambers more reliably.

Front view of the refrigerator-freezer according to Embodiment 1 of the present invention. Front view with the door removed Disassembled perspective view of the main body The perspective view which shows the formation part of the concave surface in a heat insulation box Enlarged sectional view of the concave part Sectional drawing which shows the structure of the lower surface side of the front opening part of the heat insulation box cut | disconnected by the XX line of FIG. The perspective view which shows the structure of the formation part of a heat insulating material storage chamber The perspective view which shows the formation part of the concave surface in the heat insulation box which concerns on Embodiment 2. FIG. Enlarged sectional view of the concave part The perspective view which shows the formation part of the concave surface in the heat insulation box in related technology Enlarged sectional view of the concave part

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a four-door refrigerator-freezer is illustrated.
The schematic structure of the refrigerator-freezer will be described with reference to FIGS. 1 to 3. A machine room 11 is provided on the upper surface of a main body 10 having a storage chamber inside, and is supported by legs 12 provided at four corners of the bottom surface of the main body 10. Yes.

  The main body 10 has a vertically long rectangular heat insulating box 20 having an open front surface, and the heat insulating box 20 is partitioned by a heat insulating partition wall 21 at an intermediate position in the frontage direction. A refrigerator compartment 22R and a freezer compartment 22F are formed on the left and right sides of the wall. An attachment opening 23 for attaching a refrigeration unit (not shown) is formed in the ceiling wall of each of the refrigerator compartment 22R and the freezer compartment 22F. A heat insulating partition frame 25 assembled in a cross shape is attached to the front opening 24 of the heat insulating box 20, and four doorways 26 are defined. Each doorway 26 is provided with a pair of heat insulating doors 27 on the upper side and the lower side so as to be able to swing open and close in a double door manner.

The heat insulation box 20 is formed by foaming and filling a heat insulating material (not shown) made of foamed resin such as foamed urethane resin in the outer shell 30.
As shown in FIG. 3, the outer shell 30 includes an outer box 31 and an inner box 32, both of which are assembled with a metal plate such as a stainless steel plate. The outer box 31 is formed in a large rectangular box shape with a front opening, while the inner box 32 is formed in a small rectangular box shape with a front opening that is slightly smaller than the outer box 31.

As shown in FIG. 6, a decorative board 40 is attached and closed between the opening edges of the four sides of the outer box 31 and the inner box 32, and the decorative board 40 is attached to the heat insulating box 20. The peripheral surface of 4 sides in the front opening part 24 is comprised.
The decorative plate 40 is formed by extrusion molding of a synthetic resin material, and has a pair of locking plates 43 each having a locking claw 44 at the leading edge at the protruding end of the support plate 42 protruding from the back surface of the band-shaped main body plate 41. However, the structure is provided so as to be elastically displaceable in a back-to-back posture parallel to the main body plate 41.

  On the other hand, flanges 34 are formed at the opening edges of the outer box 31 and the inner box 32 so as to face each other, and a bent plate 35 is bent at a right angle from the front end of each flange 34 to the back side. Then, the main body plate 41 of the decorative plate 40 is brought into contact with the outer surface over both flanges 34, and the locking claws 44 of the pair of locking plates 43 projecting from the back surface are provided on the bent plates 35. By being locked at the tip, the decorative plate 40 is mounted so as to close between the opening edges of the outer box 31 and the inner box 32.

The structure of the mounting portion of the partition wall 21 will be described. The partition wall 21 is heat-insulating, and is formed by filling a heat insulating material made of foamed resin into an outer shell body assembled with a metal plate such as a stainless steel plate.
As shown in FIG. 3, the partition wall 21 has a thickness dimension comparable to the thickness of the heat insulation box body 20, a height dimension comparable to the height in the heat insulation box body 20, and the heat insulation box body. It is formed in a rectangular shape with a depth dimension comparable to 20 depths.

On the other hand, the bottom surface 20A and the back surface 20B of the inner surface of the heat insulation box 20 are concave surfaces 50 into which the lower end portion and the back end portion of the partition wall 21 are fitted approximately closely at the intermediate position in the frontage direction. Is formed.
The structure of the concave surface 50 will be described with reference to FIG. At an intermediate position between the bottom surface 20A and the back surface 20B of the heat insulation box 20 in the frontage direction, the metal plate 52 of the inner box 32 constituting the bottom surface 20A and the back surface 20B is divided. In the following, the left metal plate 52 in the figure is referred to as a refrigeration side metal plate 52R and the right metal plate 52 is referred to as a refrigeration side metal plate 52F.
An L-shaped edge 53 that is bent twice at right angles to the back side and the other side is formed on the divided edges of both the metal plates 52R and 52F, and the L-shaped edge 53 is formed at the opposite ends of the L-shaped edge 53. A bent plate 56 bent at a right angle is formed on the back side.

Between the end edges of both metal plates 52R and 52F, an intervening plate 60 is mounted. The interposition plate 60 is formed by extrusion molding of a synthetic resin material, and is formed in the same shape as the decorative plate 40 described above. When the shape of the intervening plate 60 is repeated, a pair of locking plates 43 having locking claws 44 at the leading edge at the protruding end of the support plate 42 protruding from the back surface of the belt-shaped main body plate 41 and the main body plate 41. It is provided so that it can be elastically displaced in a parallel back-to-back posture.
The main body plate 41 of the interposition plate 60 is brought into contact with the outer surface of the protruding plate 54 protruding in the corresponding direction at both L-shaped end edges 53, and the locking plate 43 disposed on the back side is locked. A claw 44 is locked to the tip of each bent plate 56. Thus, a concave surface 50 having a predetermined width is formed in a groove shape in which the main body plate 41 of the interposed plate 60 is stretched on the groove bottom.

As described later, the partition wall 21 has a lower end portion fitted to the concave surface 50 of the bottom surface 20 </ b> A of the heat insulation box body 20, and thus has a height dimension comparable to the height in the heat insulation box body 20. In the partition wall 21 having a gap, a gap is formed between the upper surface of the partition wall 21 and the ceiling surface 20 </ b> C of the heat insulation box 20.
In order to close this gap, a pair of left and right side plates 62 is provided as shown in FIGS. Each side plate 62 is formed in a horizontally long rectangle having a vertical dimension slightly larger than the height of the gap and a horizontal dimension comparable to the depth of the heat insulation box 20, and faces each other on the upper edge thereof. A bent portion 62A that is bent at right angles to the direction is formed.

The both side plates 62 are arranged between the upper end portions of the left and right side surfaces of the partition wall 21 and the ceiling surface 20C of the heat insulating box 20 so as to close both the left and right sides of the gap. A heat insulating material storage chamber 64 having a front opening is formed above. In this heat insulating material storage chamber 64, a heat insulating material 65 formed in a square bar shape in advance by foamed resin is stored.
More specifically, for example, the right side plate 62 is fixed by screws 66 with the upper edge bent portion 62 </ b> A applied to the ceiling surface 20 </ b> C by screws (not shown) and the lower edge applied to the upper end portion of the right side surface of the partition wall 21. Subsequently, the heat insulating material 65 is tightly inserted from the left opening between the upper surface of the partition wall 21 and the ceiling surface 20C. Finally, the left side plate 62 has its upper edge bent portion 62A applied to the ceiling surface 20C and its lower edge applied to the upper end portion of the left side surface of the partition wall 21, and the lower edge is fixed with a screw (not shown). Thus, a structure in which the heat insulating material 65 is tightly accommodated in the heat insulating material accommodation chamber 64 is constructed.
In the region directly above the position where the partition wall 21 is disposed on the ceiling surface 20C of the heat insulating box 20, long holes 67 facing in the front-rear direction are formed in two rows to suppress heat conduction.

The present embodiment has the structure as described above. Next, an example of a procedure for manufacturing the main body 10 will be described.
First, the inner box 32 is assembled in a square box shape with a front opening. At that time, as described above, the bottom surface 20A and the back surface 20B of the inner box 32 are separated from the dividing edge of the refrigeration side metal plate 52R. The dividing edges with the freezing side metal plate 52F are connected to each other through the interposed plate 60. If it repeats, while the main body board 41 of the interposition board 60 will contact | abut to the outer surface of the protrusion board 54 protruded in the direction corresponding to the L-shaped edge 53 of both metal plates 52R and 52F, it is distribute | arranged to the back surface side. The locking claw 44 of each locking plate 43 is locked and attached to the tip of the corresponding bent plate 35. Thereby, the concave surface 50 in which the main body plate 41 of the interposition plate 60 is stretched on the groove bottom is formed on the bottom surface 20A and the back surface 20B of the inner box 32.

The outer box 31 is formed in a rectangular box shape with a front opening that is slightly larger than the inner box 32, and the inner box 32 is fitted into the outer box 31 with a predetermined interval. Between the opening edges of the sides, a synthetic resin decorative board 40 is attached and closed. Thereby, the outer shell 30 is formed.
The formed outer shell 30 is set on a foaming jig, and the heat insulating box 20 is formed by filling the outer shell 30 with a heat insulating material made of foamed resin.

  Next, the partition wall 21 formed in advance is mounted in the heat insulating box 20 formed as described above. The partition wall 21 is fitted with the lower end portion and the rear end portion thereof on the concave surfaces 50 formed on the bottom surface 20A and the rear surface 20B, respectively, of the inner surface of the heat insulation box body 20, and the inside of the heat insulation box body 20 left and right. It is mounted so as to partition. At this time, a caulking material or the like may be applied to the lower end surface and the rear end surface of the partition wall 21 to fill the gap.

Subsequently, in order to close the gap between the upper surface of the partition wall 21 mounted as described above and the ceiling surface 20C of the heat insulating box 20, the heat insulating material accommodation chamber 64 is formed in the same manner as described above. A structure in which the heat insulating material 65 formed in advance by the foamed resin is tightly stored in the heat insulating material storage chamber 64 is constructed.
Thereafter, the manufacture of the main body 10 is completed, for example, by attaching a cross-shaped insulating partition frame 25 to the front opening 24 of the heat insulating box 20.

In the refrigerator-freezer including the main body 10 manufactured in this way, the cold air generated by the refrigeration unit is individually circulated and supplied at the time of operation, so that the refrigerator compartment 22R and the refrigerator compartment 22F are cooled to different temperatures. Is done.
Here, when the inside of the heat insulating box 20 is partitioned into a refrigerating chamber 22R and a freezing chamber 22F having different cooling temperatures by a partition wall 21 mounted later, particularly in the peripheral portion of the partition wall 21 between the two chambers 22R and 22F. There is a risk of cold air leakage.

  Of the inner surface of the heat insulation box 20, the bottom surface 20 </ b> A and the back surface 20 </ b> B are fitted with a concave surface 50 formed on the bottom surface 20 </ b> A and the back surface 20 </ b> B. Since the gap is substantially closed by adopting the structure, it is possible to prevent leakage of cold air due to circulation along the bottom surface 20A and the back surface 20B. Further, since the synthetic resin intervening plate 60 is interposed in the middle of the concave surface 50 for heat insulation, it is possible to prevent cold air leakage due to heat conduction.

In the ceiling portion, a heat insulating material accommodating chamber 64 is formed by two side plates 62 in a gap formed between the upper surface of the partition wall 21 and the ceiling surface 20C of the heat insulating box 20, and is formed in advance therein. Since the heat insulating material 65 is tightly accommodated, it is possible to prevent cold air leakage due to circulation along the ceiling surface 20C and cold air leakage due to heat exchange (heat conduction) in the ceiling portion. In addition, in the area corresponding to the ceiling surface of the heat insulating material storage chamber 64 in the ceiling surface 20C of the heat insulating box 20, a long hole 67 is opened with respect to the metal plate 52 constituting the inner box 32. Cold air leakage due to heat conduction on the surface 20C is also minimized.
In total, it is possible to more reliably prevent cold air leakage between the refrigerator compartment 22R and the freezer compartment 22F.

  In addition, when the concave surface 50 is formed in the bottom face 20A of the heat insulation box 20 like the said embodiment, when the lower end part of the existing partition wall 21 with the height of the back is fitted in the concave surface 50, the same partition A gap is formed between the upper surface of the wall 21 and the ceiling surface 20C of the heat insulation box 20. As described above, the heat insulation material storage chamber 64 is formed in the gap to closely accommodate the heat insulation material 65. By doing so, the gap is filled with the heat insulating material 65. Therefore, by using the existing partition wall 21, it is possible to prevent cold air leakage at the ceiling portion between the adjacent refrigerator compartment 22R and freezer compartment 22F while reducing the cost.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the shape of the interposed plate 70 and the formation structure of the concave surface 50A using the interposed plate 70 are different from those in the first embodiment. Hereinafter, differences from the first embodiment will be mainly described. Moreover, about the member and site | part which have the same function as Embodiment 1, the overlapping description is simplified or omitted by attaching | subjecting the same code | symbol suitably.

The intervening plate 70 is also formed by extrusion molding of a synthetic resin material, and includes a main body plate 71 having a flat band shape. In particular, the width of the main body plate 71 is set to the same dimension as the width dimension W of the concave surface 50A to be formed.
On the back surface of the main body plate 71, a support rib 72 is formed so as to project at the center width position. A pair of locking plates 73 having a locking portion 74 at the leading edge is parallel to the main body plate 71. It is provided to be elastically displaceable in a back-to-back posture. The locking portion 74 is formed by being bent at a right angle at the front end portion of each locking plate 73 until reaching the back surface of the main body plate 71, and obliquely separated from the main body plate 71 from the front end of the locking portion 74. A guide portion 75 is formed in a posture.

On the other hand, an L-shaped edge 53 that is bent twice at right angles to the back surface side and the mating side is formed at the divided edges of the refrigeration side metal plate 52R and the freezing side metal plate 52F. The protruding plate 54 of each L-shaped edge 53 is inserted along the back surface of the main body plate 71 through the engagement portion 74, and is inserted when the abutting plate 55 hits the side edge of the main body plate 71. It is supposed to be stopped.
Here, the protruding plate 54 of each L-shaped edge 53 has a locking portion 74 at a position inside the position corresponding to the locking portion 74 when the protruding plate 54 is inserted to the normal position. A boss 58, which is a locked portion to be locked, is formed so as to protrude by being knocked toward the back surface side. A plurality of the bosses 58 are formed at predetermined intervals along the length direction.

  A process of forming the concave surface 50A in the second embodiment will be described. Similarly, the concave surface 50A is formed together in the assembling process of the inner box 32. As shown in detail in FIG. 9, the bottom surface 20A and the inner surface 20B of the inner box 32 have a refrigeration side metal plate. The protruding plates 54 facing each other at the L-shaped edge 53 of the divided 52R and the freezing side metal plate 52F are inserted into both side edges of the back surface of the main body plate 71 of the interposition plate 70. After the boss 58 is guided by the guide portion 75, the protruding plate 54 is inserted so as to elastically displace the locking plate 73 and split between the locking portion 74 and the main body plate 71, and each L-shaped edge. When the abutting plate 55 in 53 is pushed to the normal position where it hits each side edge of the main body plate 71, the boss 58 passes through the locking portion 74 and is restored and displaced, and the boss 58 is locked to the locking portion 74. Thus, the concave surface 50A is formed by being prevented from coming off.

  After that, as in the first embodiment, the inner box 32 formed as described above is fitted into the outer box 31 with a predetermined interval, and the four edges of the outer box 31 and the inner box 32 are opened. The outer shell 30 is formed by mounting the decorative plate 40 between the two to close the outer shell 30. After the outer shell 30 is set on the foaming jig, the outer shell 30 is insulated from the foamed resin. The heat insulating box 20 is formed by foam filling the material.

  In the second embodiment, similarly to the first embodiment, the lower end portion and the rear end portion of the partition wall 21 are formed on the bottom surface 20A and the rear surface 20B on the bottom surface 20A and the rear surface 20B, respectively, of the inner surface of the heat insulating box 20. By adopting a structure fitted to the concave surface 50A, the cold air leakage due to the flow along the bottom surface 20A and the back surface 20B is prevented, and an intervening plate 70 made of synthetic resin is interposed in the middle of the concave surface 50A. As a result of the heat insulation, cold air leakage due to heat conduction is also prevented.

  In addition, in the step of forming the concave surface 50A, the protruding plate 54 of each L-shaped edge 53 of the divided metal plates 52R and 52F is simply inserted into the back side of the main body plate 71 of the interposition plate 70 from the side edge by a regular amount. Thus, the regular width dimension W of the concave surface 50A is secured. Further, a structure is adopted in which the boss 58 provided on the protruding plate 54 of the L-shaped edge 53 of each metal plate 52R, 52F is locked to the locking portion 74 of the locking plate 73 of the interposition plate 70 to prevent the metal plate 52R, 52F from coming off. From the time when the inner box 32 is assembled while the concave surface 50A is formed as described above and before the outer shell 30 is set in the foaming jig, the metal plates 52R and 52F of the metal plates 52R and 52F separated It is prevented from coming off from the character edge 53.

<Related technologies>
10 and 11 show related technologies. In this related technology, the bottom surface 20A and the back surface 20B of the inner surface of the heat insulation box 20 are formed with the bottom surface 100 and the bottom surface of the partition wall 21 in close contact with each other. The concave surface 100 is formed by directly denting a predetermined position of the metal plate 102 of the inner box 32 constituting the 20A and the back surface 20B. A long hole 104 is appropriately opened at the groove bottom of the concave surface 100.
Also in this related technique, the end of the partition wall 21 is fitted into the concave surface 100 to prevent cold air leakage due to circulation, and the provision of the long hole 104 at the groove bottom of the concave surface 100 prevents cold air leakage due to heat conduction. Can be suppressed.

<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.
(1) In the above embodiment, the case where the concave surfaces are formed on the bottom surface and the back surface of the inner surface of the heat insulating box is illustrated, but the concave surface may also be formed on the ceiling surface. Furthermore, you may make it form a concave surface in arbitrary 1 surface or 2 surfaces among a bottom surface, a back surface, and a ceiling surface.
(2) The refrigerator compartment and the freezer compartment may be vertically partitioned by a partition wall having a horizontal posture. In that case, on the rear surface of the heat insulating box and the left and right side surfaces A concave surface may be formed.

(3) In the said embodiment, it was set as the structure which provided the concave surface in the bottom face of the heat insulation box, and fitted the partition wall of the existing height in the concave surface, and the upper surface of the same partition wall and the heat insulation box body An insulation material storage chamber is provided between the ceiling surface and the insulation wall as long as the partition wall is tall enough to reach the ceiling surface even when fitted to a concave surface. It can be made unnecessary.
(4) The present invention is not limited to a refrigerator-freezer, and can be widely applied to all cooling storages in which two or more storage rooms having different cooling temperatures are partitioned by a partition wall.

  DESCRIPTION OF SYMBOLS 20 ... Thermal insulation box 20A ... Bottom 20B ... Back 20C ... Ceiling 24 ... Front opening 30 ... Outer shell 31 ... Outer box 32 ... Inner box 50, 50A ... Concave surface 52, 52R, 52F ... Metal plate 53 ... L Character edge 54 ... Projection plate 55 ... Abutting plate 56 ... Boss (locked portion) 60 ... Interposition plate (interposition member) 62 ... Side plate (plate material) 64 ... Heat insulation material accommodation chamber 65 ... Heat insulation material 70 ... Interposition plate ( Intervening member) 71 ... Main body plate 73 ... Locking plate 74 ... Locking part

Claims (2)

In order to form a heat insulating box body with a front opening formed by filling a heat insulating material in an outer shell body in which an outer box and an inner box made of metal plates are spaced apart, and to divide the heat insulating box into a plurality of storage chambers. In a cooling storage provided with a partition wall mounted in the heat insulation box,
In the region facing the end face of the partition wall on the inner surface of the heat insulation box, a concave surface is formed into which the end of the partition wall is fitted, and
The concave surface is formed in a form in which an interposed member made of synthetic resin is interposed between the divided edges of the metal plate constituting the inner box ,
While each divided edge of the metal plate is formed as an L-shaped edge that is bent at a right angle twice on the back side and the other side,
The interposition member is provided on the back side of the body plate having a band shape with a constant width, and a pair of locking plates having a locking portion at the tip edge is provided so as to be elastically displaceable in a back-to-back posture,
Protruding plates protruding in directions corresponding to each other at the L-shaped end edges can be inserted between the locking plates and the main body plate,
Each of the protruding plates has a stopper plate bent at a right angle on the back side of the L-shaped edge, and is pushed to a normal position where it hits the side edge of the main body plate. A cooling storage, wherein a locked portion to be prevented from being provided is provided . While the concave surface is formed on the bottom surface of the heat insulation box, a pair of plate materials are disposed opposite to each other between the upper surface of the partition wall and the ceiling surface of the heat insulation box to accommodate the foam heat insulation. The cooling storage according to claim 1, wherein a possible heat insulating material storage chamber is formed.

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