JP2000088450A - Storage cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase effective inner volumes of a lower stage container and an upper stage container while assuring good operability of moving the upper stage container. SOLUTION: A roller 50 is rotatably provided at a flange 45 of an opening peripheral edge of an upper surface of a lower stage container 33, and an upper stage container 34 is moved on the container 33 while rotating the container 34 on the roller 50. Thus, good operability of moving the container 34 is assured, and hence it is not necessary to form a step for rolling the roller provided at an outer bottom of a conventional upper stage container. Further, a lower part of the container 34 can be unnecessarily suppressed in a size to be invaded into the container 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a single storage room,
The present invention relates to a storage having two containers, a lower stage and an upper stage.

[0002]

2. Description of the Related Art Conventionally, in a refrigerator which is one of storages, as shown in FIG. 10, one storage room 1 is provided with two containers 2 and 3 of a lower stage and an upper stage. . In this case, a rectangular frame-shaped support frame 6 is attached to an inner surface of a door 5 that opens and closes an entrance 4 on the front surface (left side in the figure) of the storage room 1.
As shown in FIG. 1, the lower container 2 is passed through from above, and a flange 7 formed on the periphery of the opening on the upper surface of the lower container 2 is placed thereon.

[0003] Rails 8 are mounted on both left and right sides of the inner side surface of the storage chamber 1, respectively. Rollers 9 are rotatably mounted inside the rails 8, and the support frame 6 is mounted on the rollers 9. Is placed. In this configuration, when the door 5 is pulled forward (to the left in FIG. 10), the support frame 6 is pulled, and the support frame 6 moves forward along the rail 8 while rotating the rollers 9, thereby The lower container 2 is drawn out together with the support frame 6.

On the other hand, rollers 11 rotatably supported by roller supports 10 are attached to the upper container 3 on both left and right sides of the outer bottom portion at the front by screwing the roller supports 10 respectively. (Not shown in detail). On the other hand, the lower container 2 has a concave portion 12 into which the roller 11 is fitted, and a step portion 13 on which the roller 11 extending rearward from the concave portion 12 and coming out of the concave portion 12 rolls. It is formed on the left and right inside of the flange portion 7.

Further, rollers 14 are rotatably mounted on the right and left sides of the upper portion of the rear part of the upper container 3, respectively. On the other hand, on the left and right sides of the inner surface of the storage chamber 1 (the rails 8 are mounted). Rails 15 on which the rollers 14 are rolled are mounted by screws 16.

Accordingly, when the lower container 2 is pulled out as described above, the upper container 3 is also pulled out together with the roller 11 fitted in the concave portion 12, and in this state, the upper container 3 is pulled out. The storage object can be stored in the storage container 3, or the storage object can be taken out from the upper container 3.

In this state, if the upper container 3 is pushed rearward, the roller 11 comes out of the concave portion 12 and rolls on the step portion 13, so that the upper container 3 is moved rearward and the lower container 2 Since the opening on the upper surface is opened, in this state, storage of the storage object in the lower container 2 or removal of the storage object from the lower container 2 can be performed without being disturbed by the upper container 3. ing.

When the door 5 is pushed rearward from these states, the support frame 6 is pushed, and the support frame 6 moves rearward along the rail 8 while rotating the rollers 9, whereby the support frame 6 is pushed. The lower container 2 is pushed back into the storage chamber 1 together with the frame 6. At this time, the upper container 3
If the roller 11 is still fitted in the concave portion 12, the lower container 2 is pushed back together with the lower container 2. If the roller 11 is removed from the concave portion 12 and remains in the storage chamber 1, the lower container 2 is returned. As a result, the roller 11 relatively rolls forward on the step portion 13 and returns to the state of being fitted into the concave portion 12.

[0009]

The upper container 3 can store, for example, about 10 kg of articles to be stored. For this reason, the upper container 3 has a roller 14 on its upper part as described above. In addition to having the rollers 11 at the bottom, the rollers 11 are moved while being rolled, so that the operability is properly secured.

However, for that purpose, the lower container 2 is provided with a step 1 for rolling the rollers 11 of the upper container 3.
3 is formed in the inside, and the effective internal volume used for storing the storage object of the lower container 2 is reduced accordingly.
Further, the upper container 3 is also provided with the roller 11 by the step 13 of the lower container 2.
, The lower part is reduced to a size that enters the lower container 2, and similarly to the lower container 2, the effective internal volume used for storing the storage object is small.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to mainly increase the effective inner volumes of the lower container and the upper container while ensuring good operability of moving the upper container. There is also a storage that can be provided.

[0012]

In order to achieve the above-mentioned object, a storage according to the present invention has two containers, a lower stage and an upper stage, in one storage room. A roller is rotatably provided on a flange at the periphery of the opening so that the upper container is placed on the roller and rotated on the roller to be moved on the lower container (the invention of claim 1). .

According to this, the upper container is moved on the lower container while rotating the roller provided on the lower container, so that the operability of the movement of the upper container can be ensured satisfactorily. Further, in this case, it is not necessary to form a step portion inside the lower container, which rolls a roller provided at the outer bottom of the conventional upper container, inside thereof. Can be increased. Further, the upper container does not need to be reduced in size to allow the lower part to enter the lower container, and the effective internal volume of the upper container can be increased accordingly.

In this case, it is preferable that the lower container has a roller accommodating concave portion in the flange portion, and the roller is accommodated in the roller accommodating concave portion together with the shaft. In this case, the roller need only be housed in the roller housing recess of the lower container together with the shaft, and the time and effort for mounting with a screw or the like are not required. Further, it is possible to eliminate the need for mounting parts such as a conventional roller support together with the screws.

[0015] The upper container preferably has a rail portion in contact with the roller formed on the outer bottom portion by molding with an inverted concave cross section (the invention of claim 3). In this case, since the upper container is moved across the roller by the rail portion having the inverted concave section, the lateral displacement during the movement of the upper container can be restricted. In addition, since the rail portion is formed by molding on the upper container, the rail portion itself does not need to be mounted with screws or the like, and the rail portion itself does not need to be a separate part. .

Further, a door for opening and closing the doorway of the storage room may be provided, and a ridge for preventing cold air from leaking from a portion of the door corresponding to the upper container may be provided over substantially the entire width of the portion ( The invention of claim 4). In this case, the upper container can be attached and detached without being hindered by the ridges of the door for preventing cold air from leaking, and the cold air can be more reliably prevented from leaking.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the present invention is applied to a refrigerator will be described below with reference to FIGS.
First, FIG. 2 shows the entire configuration of a refrigerator, in which the interior of an insulated cabinet 21 having an open front is partitioned into three upper and lower storage rooms by a partition plate 22 and a partition wall 23. The storage room is a refrigerating room 24, the intermediate storage room is a vegetable room 25, and the lowermost storage room is a freezing room 26.

The refrigerator compartment 24 includes a plurality of shelves 27.
And a drawer container 28, and a door 29 for opening and closing the refrigerator compartment 24 is provided at an opening on the front surface which is an entrance and an exit of the refrigerator compartment 24.
Is provided. The door 29 of the refrigerating compartment 24 is of a rotary type that is opened and closed by rotating around a right edge or a left edge,
A plurality of pockets 30 are provided on the inner surface. On the other hand, a vegetable container 31 is provided in the vegetable room 25, and a door 32 for opening and closing the vegetable room 25 is provided in an opening on the front surface which is an entrance and exit of the vegetable room 25. Door 32 of this vegetable room 25
Is a drawer type, in which the vegetable container 31 is pulled out integrally by the pulling operation, and the vegetable container 31 is pushed in integrally by the pushing operation.

The freezer compartment 26 is provided with a lower container 33 and an upper container 34, and a door 35 for opening and closing it is provided at an opening on the front surface which is an entrance and exit of the freezer compartment 26. I have. The door 35 of the freezing room 26 is
5, the lower container 33 is integrally pulled out by the pulling-out operation, and the lower container 33 is integrally pushed in by a pushing operation (to be described in detail later).

Further, an automatic ice making mechanism 36 is provided further above the portion where the upper container 34 of the freezing compartment 26 is located, and the refrigerator compartment 2 is provided at the rear of the freezing compartment 26 and the vegetable compartment 25.
4, a cooler 37, a fan 38, a damper mechanism 39, and the like for cooling the vegetable compartment 25 and the freezing compartment 26 are arranged, and these are covered by covers 40 and 41 from the front. Further, a machine room 42 is formed in a lower portion on the back side of the heat insulating cabinet 21, and a compressor 43 for cooling by the cooler 37 is provided in the machine room 42.

Here, to describe the draw-out structure of the lower container 33 in detail, a rectangular frame-like support frame 44 is attached to the inner surface of the door 35 of the freezer compartment 26 as shown in FIG. The lower container 33 is passed through the support frame 44 from above, and as shown in FIG. 1, a flange 45 formed on the periphery of the opening on the upper surface of the lower container 33 is placed thereon.
Rails 46 are mounted on both left and right sides of the inner surface of the freezing chamber 26, respectively. Rollers 47 are rotatably mounted inside the rails 46, and the support frame 44 is mounted on the rollers 47. I have.

With this configuration, when the door 35 of the freezing compartment 26 is pulled forward, the support frame 44 is pulled, and the support frame 44 moves forward along the rail 46 while rotating the rollers 47, thereby moving the support frame 44 forward. The lower container 33 is pulled out together with the support frame 44. When the door 35 of the freezing compartment 26 is pushed backward from this state, the support frame 44 is pushed, and the support frame 44 moves rearward along the rail 46 while rotating the roller 47, thereby causing the support frame 44 to move backward. Lower container 3 with frame 44
3 is pushed back into the freezing room 26.

The flange 45 of the lower container 33 has a substantially U-shaped cross section in detail, and is formed on the entire periphery of the opening on the upper surface of the lower container 33 as shown in FIG.
Among them, a step portion 48 is formed on the upper side at the front part on both right and left sides. Further, at the rear of the left and right sides of the flange 45, a roller housing concave portion 49 is also formed at the upper side.

As shown in FIG. 5, the roller accommodating concave portion 49 not only accommodates the roller 50 but also accommodates a shaft 51 provided at the center of the roller 50 integrally therewith. Main recess 5 for housing roller 50 from above
2, and a slit 53 for passing the shaft 51 from above, and a sub-recess 54 for accommodating the shaft 51 passing through the slit 53.

In this case, the main concave portion 52 and the sub concave portion 54 have some allowance for the roller 50 and the shaft 51, respectively, so that the roller 50 can be freely rotated (rotated on the horizontal axis). Has become. On the other hand, the slit 53 is narrower than the diameter of the shaft 51, and when the shaft 51 is inserted by press-fitting and the shaft 51 is housed in the sub-recess 54, the shaft 51 cannot be removed from the sub-recess 54. It is supposed to. Furthermore, in this stored state, the roller 50
As shown in FIG. 1 and FIG. 3, part of the peripheral portion protrudes further above the upper surface of the flange portion 45 of the lower container 33.

In contrast to the above, the upper container 34 has a rectangular box shape with an open top like the lower container 33, but has a shallower bottom than the lower container 33, for example, the lower container 3.
3 occupies about 2/3 of the height of the freezing compartment 26, whereas the upper vessel 34 occupies the remaining about 1/3, and has a slightly smaller depth than the lower vessel 33. .

Rail portions 55 are integrally formed on the left and right side edges of the outer bottom of the upper container 34 as shown in FIG. The upper container 34 and the lower container 33 are both made of plastic, and the rail portion 55 is formed by injection molding together with the molding of the upper container 34.

In this case, the interior of the upper container 34 is divided into first storage portions 57 by partition portions 56 protruding from the bottom.
And a second storage portion 58, and a plurality of reinforcing ribs 59 are formed in the partition portion 56. The upper container 34 receives and stores the ice dropped from the ice making mechanism 36 by the first storage portion 57 described above, and stores the ice in the second storage portion 58.
Thus, other items to be stored (for example, frozen foods) are stored and stored. The lower container 33 also stores other items to be stored.

Furthermore, a flange portion 60 having a substantially U-shaped cross section similar to the flange portion 45 of the lower container 33 is formed all around the periphery of the opening on the upper surface of the upper container 34. Each of the rear ends of the right and left sides (only the right side is shown) of the flange portion 60 is formed with an extended portion 61 that protrudes slightly outward, and each of the extended portions 61 is provided with a roller 6.
2 are rotatably mounted by shafts 63 provided integrally at the respective central portions thereof. In addition, a concave portion 64 is provided above a portion near the rear end portion on each of the left and right sides of the flange portion 60.
In addition, a hand-holding portion 65 is formed in a central portion on the front side of the flange portion 60.

On the other hand, as shown in FIG. 1, rails 66 are provided on the left and right sides of the lower surface of the freezing compartment 26, as shown in FIG. Is provided. As shown in detail in FIG. 7, the rail 66 is formed integrally with the lower shell 67 of the partition wall 23 by molding into an L-shaped cross section.
The rail 66 is formed by injection molding together with the molding of the lower shell 67.

The lower shell 67 of the partition wall 23 also serves as a ceiling plate of the freezing room 26, and the partition wall 23 also has an upper shell 68 (see FIG. 1) also serving as a bottom plate of the vegetable room 25. They cover the heat-insulating body 69 formed in advance. In addition, the above-mentioned rail 6
6 are formed on the inner edge of the rail 6 so as to protrude upward over the entire length thereof. Further, at a portion near the rear end of each inner bottom surface of the rail 66, as shown in FIG. Similarly, a projection 71 projecting upward is formed.

In this configuration, the roller 62 is mounted on the rail 66 as shown in FIGS. In a state where the roller 62 is rolled to the inner part of the rail 66 until it exceeds the protrusion 71, the rear end of the rail part 55 of the upper container 34 is placed on the roller 50 provided on the lower container 33. , And the front end of the rail 55 is placed on the flange 45 of the lower container 33.

In addition, on the inner surface of the door 35 of the freezer compartment 26, ridges 72 and 73 for preventing cold air from leaking are formed. The ridges 72, 73 are for preventing leakage of cool air from the freezing chamber 26 as much as possible.
The upper ridge 72 corresponding to the upper container 34 and the upper ridge portion 72 corresponding to the upper container 34 are formed so as to substantially sandwich the front surface of the lower container 33 and the front surface of the lower container 33, as shown in FIG. The lower ridge 73 corresponding to the lower container 33 is also formed over substantially the entire width of the lower portion of the door 35, though not shown, although it is formed over the entire width.

Next, the operation of the above configuration will be described.
Now, suppose that the door 35 of the freezing room 26 is closed and the lower container 33 and the upper container 34 are stored in the freezing room 26 as shown in FIG. When the door 35 is pulled forward from this state, the lower container 33 is pulled out via the support frame 44 as described above. FIG. 9 shows a state in which the lower container 33 is pulled out, and the upper container 34 remains at the storage position with the roller 62 stopped by the projection 71. Therefore, the storage of the storage object in the lower container 33 or the removal of the storage object from the lower container 33 may be performed in such a state.

At this time, the roller 50 of the lower container 33 is
Is rolled forward below the rail portion 55 of the upper container 34 as the lower container 33 is pulled out, and is located below the front end of the rail portion 55.

In this state, when the upper container 34 is pulled forward, for example, by putting a hand on the handle 65, the upper container 34 is rotated by the rail 55 so that the roller 50 is rotated. As the roller 62 moves forward on the flange portion 45 and the roller 62 rolls forward on the rail 66 beyond the projection 71, the roller 62 is pulled out onto the lower container 33. Therefore, the storage of the storage object in the upper container 34 or the removal of the storage object from the upper container 34 may be performed in such a state. At this time, the upper container 3
In 4, the front end of the rail portion 55 is abutted against the step portion 48 of the lower container 33, so that further pulling forward is restricted.

On the other hand, when the upper container 34 is pushed rearward from this state, the upper container 34 is moved rearward on the flange 45 of the lower container 33 while the rail 55 rotates the roller 50, contrary to the above. And the rollers 62
Rolling backward on the rail 66, the freezer compartment 2
6, and the opening on the upper surface of the lower container 33 is opened. Therefore, the storage of the storage object again in the lower container 33 or the removal of the storage object again from the lower container 33 may be performed in such a state.

When the door 35 is pushed backward, the lower container 33 is pushed back through the support frame 44 as described above. At this time, if the upper container 34 is in a state of being pulled out onto the lower container 33, the upper container 34 is pushed back on the lower container 33. In addition, the upper container 34 is the freezer 2
6, only the lower container 33 is pushed back below the upper container 34.

As described above, in this configuration, the upper container 3
4 is pulled out and pushed in and out by being moved back and forth on the lower container 33 while rotating the roller 50 provided on the flange portion 45 of the lower container 33. , Upper container 34
Operability of the movement of the vehicle can be secured well.

Further, the upper container 34 is moved in and out of the lower container 33 while rotating the roller 50 provided on the lower container 33, so that the conventional upper container 3 is placed inside the lower container 33. Roller 1 provided at the outer bottom of the vehicle
It is not necessary to form the step portion 13 as if rolling 1.
Therefore, the width W1 (see FIG. 1) of the lower container 33 can be made larger than the conventional lower container 2 so as to be closer to both inner surfaces of the freezing chamber 26, and the effective internal volume of the lower container 33 can be increased.

Further, in this case, the lower portion of the upper container 34 also has a roller 11 provided on the outer bottom of the conventional upper container 3.
It is not necessary to reduce the size of the upper container 34 so that it can enter the lower container 33 as in the case where the upper container 34 is rolled on the step portion 13.
The width W2 (see FIG. 1) of the upper container 34 can be made larger than the conventional upper container 3 so as to be closer to both inner surfaces of the freezing chamber 26, and the effective internal volume of the upper container 34 can be increased.

In addition, in the case of this configuration, the lower vessel 3
3 has a roller housing recess 49 in the flange 45, and the roller 50 is housed in the roller housing recess 49 together with the shaft 51 and provided. Thus, the roller 50 can be mounted without the need for mounting with a screw or the like, and the assemblability can be improved. In addition, it is possible to eliminate the need for mounting parts such as the conventional roller support 10 together with the screws, thereby reducing the cost.

On the other hand, in the upper container 34, a rail portion 55 that is in contact with the roller 50 is formed on the outer bottom portion by molding into a concave shape in cross section. As a result, the upper container 34 is
Of the upper container 34 can be restricted when the upper container 34 is moved, so that there is no so-called play in the lateral direction. Can be put in and out. Also, the rail part 5
5 is formed on the upper container 34 by molding, so that this can also be done without the need for mounting with screws or the like, and without requiring the rail 55 itself as a separate part. With these, assemblability can be improved and the cost can be reduced.

Further, a door 3 for opening and closing the entrance of the freezing compartment 26
5, at a portion corresponding to the upper container 34, a ridge 72 for preventing cold air from leaking is provided over almost the entire width of the portion. Here, the cool air is cooled by the cooler 37 by the above-described fan 38 from the refrigerator compartment 24, the vegetable compartment 25, and the freezing compartment 26, and sent out to the compartments. And the flow of the cold air in the freezing room 26 is
This is as indicated by the arrow in FIG.

That is, the cool air supplied from the cool air outlet 41 a of the cover 41 into the freezing chamber 26 passes above the upper container 34, further forward of the upper container 34, forward of the lower container 33, and lower container 33. , And the rear of the lower container 33 in order, and is returned to the cooler 37 from the cool air return port 41b formed at the lower end of the cover 41. At this time, the ridge portion 72 prevents the leakage of cool air from above the upper container 34 to the front of the upper container 34.

However, in the prior art, as shown in FIG. 10, a roller 11 is provided on the outer bottom of the upper container 3, and the upper container 3 pulled out as described above is further removed for cleaning, for example. When removing the upper container 3 out of the refrigerator or returning the removed upper container 3, the roller 11 hits both ends of the ridge portion 72 at a portion corresponding to the upper container 3 of the door 5, so that the upper container 3 can be smoothly removed and returned. Can not. For this reason,
In the prior art, as shown in FIG. 12, the ridges 17 corresponding to the ridges 72 are provided except for both end portions 18. As a result, when the cool air in the storage chamber 1 reaches from the upper part of the upper container 3 to the front of the upper container 3 as in the case of the present embodiment, it leaks from those parts, and furthermore, the door 5
There has been a problem that dew is formed on each of the inner surfaces in the vicinity.

In this respect, in the case of this configuration, the upper container 34
When there is no roller at the outer bottom of the upper container 34 when the upper container 34 that has been pulled out is further taken out of the refrigerator or when the upper container 34 that has been taken out is returned, the roller is a ridge portion corresponding to the upper container 34 of the door 35. There is no possibility of hitting both ends of 72. Therefore, removal and return of the upper container 34 can be performed smoothly regardless of the presence of the ridge portion 72. As described above, the ridge portion 72 is attached to a portion corresponding to the upper container 34 of the door 35.設 け There is no problem even if it is provided over the entire width.

Thus, by providing the ridge portion 72 over substantially the entire width of the portion corresponding to the upper container 34 of the door 35, it is possible to prevent the cold air in the freezing chamber 26 from leaking as much as possible. Thus, the problem of dew on the inner surface of the door 5 can be prevented. In addition, in this configuration, the rail 66 is formed integrally with the lower shell 67 of the partition wall 23 by molding.
There is no need for mounting with screws, etc.
As such, it is not necessary to use it as a separate part, so that the assemblability can be further improved and the cost can be reduced.

Also, a rib 70 is formed on the rail 66 so that when the roller 62 rolls on the rail 66, the rail 66 deflects downward by the weight of the articles stored in the upper container 34. However, it is possible to prevent the roller 62 from falling off the rail 66. Further, a concave portion 64 is formed in the flange portion 60 of the upper container 34, so that when the upper container 34 that has been drawn out is further taken out of the refrigerator, the flange portion 60 is moved to the front lower edge portion 23a of the partition wall 23.
(See FIG. 3).
4 can be easily taken out without being obstructed by the partition wall 23.

The present invention is not limited to the embodiment described above and shown in the drawings. For example, the formation of the rail 66, the rib 70, and the recess 64 is not always necessary. Absent. Further, the storage room exemplified as the freezing room may be, for example, a vegetable room other than the freezing room, and the storage room is not limited to the refrigerator, but may be a warm storage room or a room temperature room.

Further, the upper container is not limited to the one that remains in the storage chamber when the door is pulled out, but may be one that is pulled out together with the lower container like a conventional one.
In this case, the rollers of the lower container need to be provided at the front of the lower container. The movement guide structure on the upper part of the upper container may not be based on the rollers but may be based on sliding between rails. In addition, the lower container is not limited to the one that is pulled out integrally with the door. For example, the door may be pivotable, and the lower container and the upper container may be separately drawn after opening the door. .

[0052]

The present invention is as described above.
The following effects are obtained. According to the storage of claim 1, since the upper container is moved on the lower container while rotating the roller provided on the flange portion of the lower container, the operability of the movement of the upper container is ensured satisfactorily. In addition, the effective inner volumes of the lower container and the upper container can be increased.

According to the storage device of the second aspect, the roller housing recess is formed in the flange portion of the lower container, and the roller is housed in the roller housing recess together with the shaft.
The assemblability can be improved, and the cost can be reduced.
According to the storage of claim 3, since the rail portion of the upper container in contact with the roller is formed on the outer bottom portion of the upper container by forming an inverted concave cross section, the upper container is moved without so-called rattling in the lateral direction. Can be
The assemblability can be improved, and the cost can be reduced.

According to the fourth aspect of the present invention, the door for opening and closing the entrance of the storage room is provided with a ridge for preventing cold air from leaking from a portion corresponding to the upper container over substantially the entire width of the portion. The upper container can be smoothly attached and detached without being hindered by the ridges for preventing the cool air from leaking out of the door, and the leak of the cool air can be more reliably prevented, so that the problem of dew on the inner surface of the door does not occur. Can be.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a main part showing one embodiment of the present invention.

FIG. 2 is an overall vertical side view.

FIG. 3 is a longitudinal sectional side view of a main part.

FIG. 4 is a perspective view of the lower container alone.

FIG. 5 is a perspective view of a roller housing concave portion and a roller of the lower container.

FIG. 6 is a perspective view of an upper container and a roller attached thereto.

FIG. 7 is a perspective view of a rail portion of a lower shell of a partition wall.

FIG. 8 is a cross-sectional plan view of a main part.

FIG. 9 is a vertical cross-sectional side view of a main part in a state where the lower container is pulled out.

FIG. 10 is a diagram corresponding to FIG. 3 showing a conventional example.

FIG. 11 is a diagram corresponding to FIG. 1;

FIG. 12 is a diagram corresponding to FIG. 8;

[Explanation of symbols]

26 is a freezing room (storage room), 33 is a lower container, 34 is an upper container, 35 is a door, 45 is a flange portion, 49 is a roller storage concave portion, 50 is a roller, 51 is a shaft, 55 is a rail portion, 72
Indicates a ridge.

Claims (4)

[Claims] 1. A container having two containers, a lower container and an upper container, in one storage chamber, wherein a roller is rotatably provided on a flange portion of an upper peripheral edge of an opening on the upper surface of the lower container. A storage box characterized in that it is moved on the lower container while rotating on the roller while being mounted on the roller. 2. The storage according to claim 1, wherein the lower container has a roller storage recess in the flange portion, and the roller is housed in the roller storage recess together with the shaft. 3. The storage according to claim 1, wherein the upper container has a rail portion, which is in contact with the roller, formed on the outer bottom portion by molding with an inverted concave cross section. 4. A door for opening and closing a doorway of a storage room, wherein a ridge for preventing cold air from leaking from a portion of the door corresponding to the upper container is provided over substantially the entire width of the portion. The storage according to any one of claims 1 to 3, wherein: