KR20180000809A - Multipurpose delivery bag - Google Patents

Abstract

The present invention relates to a delivery bag having a structure capable of minimizing the capacity during storage while being capable of changing usage, and provides the delivery bag, which comprises: a main body part having a side wall portion, a front wall portion, a rear wall portion and a bottom wall portion on both sides, and having an opening at an upper portion; a cover part covering the opening and connected to be rotated to upper and lower directions at the rear wall portion; and a plurality of reinforcing part disposed at the inner wall of the main body part to maintain a vertical state of the side wall portion, the front wall portion and the rear wall portion, wherein the reinforcing part is connected to an inner lower edge of the main body part and is rotated to the upper direction in a use state, and is rotated to the lower direction in a storage state to be housed in a bottom portion of the main body part.

Description

Multi-Purpose Delivery Bag {MULTIPURPOSE DELIVERY BAG}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a delivery bag, and more particularly, to a multi-purpose delivery bag having a structure capable of converting usage and minimizing a storage capacity.

Recently, according to the generalization of the eating and drinking culture, the cases of using the restaurants rather than eating the food directly at home are increasing rapidly. According to this tendency, the delivery of food in each home or office is also increasing.

In order to deliver the food ordered by the food service provider to the home or office, a delivery cask is provided to accommodate the cooked food. Such a delivery cradle may be carried on a carrier such as a motorcycle for mobility or carried by hand.

Korean Registered Utility Model No. 20-0309167 discloses a conventional culinary delivery system, and FIG. 1 is a perspective view thereof.

Such a culinary delivery cask is generally installed in a fixed form on a motorcycle for durability. The culinary delivery cask is provided with a predetermined opening and a door in a plastic-like box, and stores food and the like therein.

However, in the case of such a culinary delivery container, the food and food containers can not be fixed because the interior is made of an empty space, and the food is undesirably mixed due to the fluctuation during the transportation process. In severe cases, damage to the food container or the like may occur and the delivery may fail.

In addition, since the internal temperature is not maintained smoothly, there has been a problem that the cold food is warmed due to the delay of the time, or the hot food is delivered in a cooled state and the satisfaction of the consumer is lowered.

In recent years, in response to the spread of the delivery culture, there has been a service that variously carries out not only the delivery of food but also the purchase and delivery of foodstuffs and the delivery of various foodstuffs in response to the demands of consumers.

In the case of such a delivery service, there are many cases in which a two-wheeled vehicle is used for mobility. In order to accommodate various requests, the volume, shape and internal structure of the delivery bag need to be varied. However, due to structural limitations and economic problems, there has been no proposal.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multipurpose delivery bag which can be converted into various types of delivery articles and requests in order to solve the above problems.

Another object of the present invention is to provide an economical multi-purpose delivery bag which has a structure capable of fully preserving the state of an article and which can minimize volume even during storage.

The present invention relates to a lid comprising a body portion having side walls, front wall portions, rear wall portions and bottom portions on both sides and having an opening formed on the upper side thereof, a lid portion connected to the rear wall portion so as to be vertically rotatable, And a plurality of reinforcement portions disposed on an inner wall of the main body to maintain an upright state of the side wall portion, the front wall portion and the rear wall portion. The reinforcing portion is connected to an inner lower edge of the main body portion, Thereby providing a multipurpose delivery bag accommodated in a bottom portion of the main body portion. Therefore, it is easy to switch between the use state and the storage state as needed, and the spatial advantage is improved.

It is preferable that the lid part has a wing extending toward the front and both sides and a wing magnetic body part disposed on the inner surface of the wing part and coupled to the main body magnetic body part formed on the side surface of the main body part. Therefore, ease of detachment and operational reliability are improved.

The rear wall portion may include a backward folding portion formed in a transverse direction so as to be folded in a vertical direction. The side wall portion may include a front folding portion disposed on the front side and inclined downward forward, And a lateral folding portion for allowing the attachment to move forward in the storage state.

It is further preferable that the apparatus further comprises a bottom side holder which extends from both sides of the bottom of the side wall part and is attached to a top surface attachment part formed on the top surface of the lid in a storage state to maintain the folded state. Therefore, unnecessary expansion of the volume can be prevented in the storage state.

The side wall, the front wall, and the rear wall are made of a material that is more flexible than the reinforcement, and the lid, the bottom, and the reinforcement may include a retaining member that maintains the shape and provides heat insulation performance. Therefore, flexibility and robustness can be ensured according to the use state and the storage state.

On the other hand, there is provided at least one insertion member which has an insertion attachment portion at both ends so as to be detachable to the reinforcing-side attachment portion disposed on the inner wall of the reinforcing portion, and which defines a space inside the body portion. Therefore, the storage of the articles in various environments is maximized and the environment can be flexibly adapted.

The insertion member includes a transverse insertion member arranged to cross the reinforcing portion and the reinforcing portion, a partition wall insertion member connected between the transverse insertion member and the reinforcing portion, and a space partitioned by the transverse insertion member or the partition wall insertion member And a plate-like insertion member which is disposed in the upper and lower spaces and divides the upper and lower spaces.

According to the present invention, the wall portion constituting the main body portion and the reinforcing portion reinforcing the main body portion are separated from each other, thereby maximizing the storage and storage of the article, reducing the folding and volume.

In addition, since the lid portion and the main body portion are coupled with each other through the magnetic body in three planes, it is robust, and the convenience of the detachment is improved, and the stability of the article storage is further improved through the provision of the wing portion.

In addition, since the structure for desorption and folding of the respective members can be optimally formed, convenience in use as well as productivity can be improved, and the inner space can be varied according to the shape of the article as well as the characteristics It is possible to flexibly respond to the delivery environment.

1 is a perspective view showing a conventional culinary delivery cask.
2 is a perspective view of a multipurpose delivery bag according to the present invention.
3 is a perspective view for explaining a folding structure in the multipurpose delivery bag of the present invention.
4 is a perspective view for explaining the storage state of the multipurpose delivery bag according to the present invention.
Fig. 5 is a perspective view showing the storage state of Fig. 4 on the bottom surface side. Fig.
6 is a perspective view showing an installation example of an insertion member of the multipurpose delivery bag of the present invention.

Hereinafter, a multi-purpose delivery bag according to the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood, however, that the embodiments described below are only for explanation of the embodiments of the present invention so that those skilled in the art can easily carry out the invention, It does not mean anything.

In the following description, when a part is referred to as being 'connected' to another part, it includes not only a direct connection but also a case where another part or device is connected in between. In addition, when a part is referred to as including an element, it is to be understood that the element may include other elements, not the exclusion of any other element, unless specifically stated otherwise.

The present invention basically comprises a body portion having a square shape with an open upper side and folded down and stored downwardly, a lid portion connected to be vertically rotatable from the rear side of the body portion, And a plurality of reinforcing portions arranged to be rotatable up and down.

The shape, size, and ratio of such a multipurpose delivery bag are not limited to those shown in the description of the present invention and the drawings. In addition, various materials such as plastic, synthetic resin, fiber, and metal may be selected as the material of the main body, the lid and the reinforcement, and the insert member as described later.

An article to be accommodated in the versatile delivery bag of the present invention may be variously formed into a food container, a food, a fruit, a beverage cup, etc., and a proper storage space may be formed according to the type and arrangement of the insertion member to be described later.

The forward and rearward directions described in the present invention may be changed according to the use state, and the inner side is defined as a direction toward the center of the main body in the use state or the storage state.

2 is a perspective view of a multipurpose delivery bag according to the present invention.

The main body part 1000 is basically formed in a rectangular box shape opened on the upper side. The body portion 1000 is formed by connecting the front wall portion 1200, the rear wall portion, and the side wall portion 1100 and the bottom portion on both sides at the corner portions.

The side wall part 1100 and the rear wall part are folded downward to minimize the volume during storage, and will be described later.

The main body part 1000 may include a handle part 1010 to allow the user to grip the multipurpose delivery bag as a whole and the handle part 1010 may be formed symmetrically on both sides of the side wall part 1100 But is not limited thereto.

It is preferable that the length of the handle 1010 is such that the main body 1000 is in contact with the upper side in a state in which the body 1000 is upright and box-shaped. At least one side The handle 1010 may be formed with a handle holder 1011.

The handle holder portion 1011 may have a structure in which the handle portion 1010 may be wrapped around the grip portion by hand, and a fastening means such as a snap button or a Velcro may be used to fix the wrap portion, .

As will be described later, in the present invention, a velcro or a magnetic body may be provided for attaching members to each other. The velcro is formed by hooks on one side and hooks on the other side, and the hooks can be repeatedly attached to each other. At this time, the arrangement of the hook and hook portions is optional.

The lid part 2000 is rotatably connected to the upper end of the rear wall part. The size and area of the lid part 2000 may correspond to the area of the opening in a state where the body part 1000 is upright.

Various fastening structures for securing the lid 2000 may be considered. In the case of a conventional plastic packing box or a delivery bag, a hook or a separate fastener is provided to securely fasten the body. In the present invention, however, the body part 1000 can be folded and housed, It is preferable that mutual coupling of the main body part 1000 and the lid part 2000 is performed through a magnetic force.

The main magnetic body part 1110 is formed on the side surface of the main body part 1000 and the front magnetic core part 1110 is formed on the front part of the front wall part 1200 and the side walls part 1100 on both sides, And the main body magnetic body part 1110 may be disposed in the width direction, respectively.

The lid part 2000 may further include a wing part 2100 extending further forward and both sides in consideration of the arrangement of the main body magnetic body part 1110. The lid part 2000 may correspond to the position of the main body magnetic body part 1110 So that the blade magnetic body portion 2110 can be formed. The position, size, and shape of the wing magnetic body portion 2110 may be formed corresponding to the body magnetic body portion 1110.

Since the opening of the main body 1000 can be completely covered when the wing 2100 is extended to the front and both sides of the lid 2000 as described above, It should be noted that it has an advantage that it can be prevented. If the wing portion 2100 of the lid 2000 and the body portion 1000 are detachable by mutual magnetic bodies, there is an advantage that the speed and convenience of delivery can be further increased. Also, as described later, since the wing portion 2100 covers the folded portion in the folded state and the stored state of the body portion 1000, contamination can be prevented and a cosmetic improvement effect can be expected.

The lid pocket portion 2200 may be disposed on the inner side of the lid portion 2000 in consideration of retractability. The lid pocket portion 2200 is preferably formed in a mesh net shape, but is not limited thereto. Also, the shape and arrangement of the cover pocket portion 2200 is optional.

The multipurpose delivery bag according to the present invention can be configured to have a predetermined box shape in use and can be stored in a state of being stored in a state where the height of the main body part 1000 can be minimized, It is preferable that the parts are formed of a material of a certain degree of ductility. Therefore, the upper surface of the lid part 2000 and the bottom surface part of the body part 1000 may be formed of a material capable of maintaining a shape or a reinforcement plate for the same.

As described above, when the front wall part 1200, the side wall part 1100 and the rear wall parts of the main body 1000 are made of a material having flexibility to some extent, a reinforcing part for maintaining the box shape is requested.

Therefore, a plurality of reinforcing portions, which are in close contact with or adjacent to the inner wall of the body portion 1000, can be disposed on the slope so as to maintain the shape of the box-shaped body portion 1000. For this, the reinforcing portion includes a front reinforcing portion 3100 which is in close contact with the inner surface of the front wall portion 1200, a rear reinforcing portion 3200 which is in close contact with the inner surface of the rear wall portion, And a side reinforcing portion 3300 which is formed of a resin.

Preferably, the reinforcing portions include a material having a high form retentivity at least as compared with the wall portions, and may be formed in a plate shape as a whole.

A detachable portion (not shown) may be formed between the wall portion and the reinforcing portions so that the detachable portion can be detached. The detachable portion is preferably formed of velcro but is not limited thereto.

It may be considered that the front reinforcing portion 3100, the rear reinforcing portion 3200 and the side reinforcing portions 3300 are separately detached from the main body 1000. However, As the number of members becomes larger, management problems may occur.

Therefore, when the front reinforcing part 3100, the rear reinforcing part 3200 and the side reinforcing parts 3300 are connected to each other inside the body part 1000 to be used for receiving articles, desirable. The front reinforcing part 3100, the rear reinforcing part 3200 and the side reinforcing part 3300 may be connected to the corner part of the inner space of the main body part 1000 so as to be vertically rotatable.

Since the reinforcing portions serve as inner walls of the body portion 1000 in use as a delivery bag, it is preferable that a reinforcing-side attaching portion 3010 is further formed on the inner surface for mounting the insertion members as described later. The reinforcing-side attaching portion 3010 may be formed of velcro and may be formed so as to occupy most of the width of the inner surface when considering the selection of the mounting position in the width direction. In addition, two or more rows can be arranged in consideration of the rigidity of mounting in the height direction.

The multi-purpose delivery bag according to the present invention is required to store various items and foods, as described above, so that the performance of the temperature storage and buffering is required. For this purpose, it is preferable that a wall or reinforcing member constituting the outer surface is provided with a holding member such as a buffering member and / or a heat insulating member, and will be described in more detail in this regard.

As described above, the lid portion 2000 and the bottom portion of the body portion 1000 are relatively freely selected in terms of the material of the shape. Therefore, a holding material (not shown) for maintaining heat and / or shape can be formed or disposed on the lid part 2000 and the bottom part, and the material of the holding material is optional. At this time, considering the manufacturing convenience, the main body part 1000 may be integrally formed as a whole, and a bottom plate part (not shown) such as a reinforcing part may be formed on the upper surface of the bottom part part.

The retaining member may be formed on the front reinforcing portion 3100, the rear reinforcing portion 3200, and the side reinforcing portion 3300, so that the reinforcing portions function on the inner wall of the wall portion for insulation and buffering.

Further, in consideration of the improvement of the heat retaining performance, it is preferable that a heat reflecting member is further disposed on the bottom surface of the lid part 2000, the upper surface of the bottom surface part, and the inner surface of the reinforcing part.

A bottom side holder 4100 for fixing and holding the folded state may be formed on the lower end side of the main body part 1000 to extend in the outer circumferential direction.

3 is a perspective view for explaining a folding structure in the multipurpose delivery bag of the present invention.

In the present embodiment, the front reinforcing portion 3100, the rear reinforcing portion 3200 and the side reinforcing portion 3300 are folded to the bottom surface of the main body 1000.

In the present invention, since the body part 1000 is folded downward to form a storage state, a folding structure is formed. In the preferred embodiment of the present invention, it is preferable that the front wall portion 1200 has a folding structure and the rear wall portion 1300 and the side wall portion 1100 have a folding structure, considering the entire storage state. It should be noted, however, that the reinforcement portions are disposed substantially at the bottom of the main body portion 1000 in a folded state.

According to the above concept, the rear wall portion 1300 may have a rear fold portion 1330 formed laterally adjacent to the center line of the height direction. However, the formation height of the rear folds 1330 is optional. Accordingly, the rear wall portion 1300 is folded forward from the upper side and folded backward from the lower side to reduce the height.

The side wall part 1100 may be formed with a forward folded part 1130 that is inclined forwardly downward on the front edge. Therefore, the front wall part 1200 can be in close contact with the side wall part 1100 which is folded backward and folded inward.

The side wall part 1100 may include a side folding part 1140 inclined forward to form a rear folding part 1330 from the rear side and the side folding part 1140 may include a backward folding part 1330 have a wedge shape that can be folded along the upper and lower sides as they move forward.

Interference with the main body magnetic body part 1110 may occur due to the disposition of the folded part. It is preferable that the main body magnetic body part 1110 and the wing magnetic body part 2110 secure a maximum attachment area, In consideration of the convenience of folding, it is more preferable that the magnetic body portions, at least the body magnetic body portion 1110, is made of a rubber magnet having flexibility.

On the other hand, a bottom side holder 4100 extending in the outer circumferential direction may be formed on the bottom of the side wall part 1100 so that the folding of the main body part 1000 is completed and the lid part 2000 covers the upper side And when they are disposed, they are fastened to the upper surface of the lid 2000 to maintain a firm storage state.

4 is a perspective view for explaining the storage state of the multipurpose delivery bag according to the present invention.

Referring to FIG. 3, the folding process will be described. In the upright position of the side wall part 1100 and the upright position of the reinforcement part, the reinforcement parts are detached from the inner wall of the body part 1000, .

At this time, in order to minimize the height of the reinforcing portions in the folded state, the front reinforcing portion 3100 and the rear reinforcing portion 3200 form one set and the side reinforcing portions 3300 are folded into a set desirable. The folding order of the two sets is optional.

As described above, since the reinforcement parts are connected to each other at the lower corner of the main body 1000, the main body part 1000 is accommodated before being folded.

When the reinforcement parts are folded and housed, the rear wall part 1300 is folded at a half of the height by the rear folding part 1330 so that the rear folding part 1330 is moved forward, and the front folding part 1130 and the side folding part 1100 are folded in the side folding part 1140 so that the bottom surface of the front wall part 1200 faces the upper surface of the side wall part 1100.

When the folding is completed, the lid unit 2000 is arranged to cover the upper side thereof. As shown in FIG. 4, the front and side wings 2100 of the lid 2000 are arranged to cover the folded part Aesthetics and structural stability are further improved.

The bottom surface side holder 4100 disposed on the bottom of the side wall part 1100 is coupled to the top surface attachment part 4200 that is extended to the side and upper side and disposed on both sides of the top surface of the lid part 2000, .

At this time, the handle 1010 may be housed together inside the folded side wall part 1100, and may be pulled out to the outside in order to grasp it.

Fig. 5 is a perspective view showing the storage state of Fig. 4 on the bottom surface side. Fig.

The city conditions are shown in the bottom and back sides of the storage state.

Since the wing portion 2100 is not disposed at the rear side in the lid portion 2000, the rear folding portion 1330 can be exposed to the outside in a folded state. As described above, the wing portion 2100 is disposed to cover the front and the side, and the bottom surface side holder 4100 is coupled to the top surface attachment portion 4200 of the lid 2000 to maintain the structure.

On the other hand, the bottom surface attachment portion 4300 may be further disposed below the bottom surface portion 1400 as an additional coupling member. The bottom surface attachment portion 4300 is preferably formed in a velcro shape and can be used for fixing the bottom surface side holder 4100 in the stored state of the article or attaching the bottom surface side attachment member to another bottom member disposed on the bottom surface. In consideration of this, the bottom surface attachment portion 4300 may be provided with a hook-shaped material.

The bottom surface attachment portion 4300 may be formed so as to extend from the end of the bottom surface side holder 4100 to the bottom surface portion 1400 in consideration of the connection with the bottom side holder 4100 and aesthetic appearance.

6 is a perspective view showing an installation example of an insertion member of the multipurpose delivery bag of the present invention.

The present invention can be used while changing the arrangement relationship of predetermined insertion members so as to accommodate various articles.

Therefore, the reinforcing-side attaching portions 3010 are disposed on the inner surfaces of the reinforcing portions disposed on the inner side of the wall portion, so that the positions of the various insertion members can be fixed. The reinforcing-side attaching portions 3010 are preferably formed in the form of a velcro in consideration of the convenience of detachment. More specifically, the reinforcing-side attaching portion 3010 may be formed of hook-shaped velcro.

In one embodiment, the transverse insertion member 5100 may be coupled as a form transverse to the reinforcement portions. The transverse insertion member 5100 functions to divide a rectangular box into left and right or back and forth.

The transverse insertion member 5100 includes a connection portion 5020 that is folded back and forth or laterally to the other insertion members so as to face the inner wall of the reinforcement portion. In a portion of the connection portion 5020 facing the inner wall of the reinforcement portion, An insertion attachment portion 5010 coupled to the reinforcing side attachment portion 3010 may be formed. In some cases, the attaching portions may be formed of snap buttons or hooks.

Preferably, the transverse insertion member 5100 is further provided with an insert pocket (not shown) on one side thereof so as to fix a relatively small volume item.

In addition, the transverse insertion member 5100 may have a transverse attachment portion on the other side like the reinforcing portion, which can function as a configuration for fixing the partition insertion member 5200.

As a further embodiment, a partition wall insertion member 5200 may be further disposed to additionally partition the space partitioned by the transverse insertion member 5100. One side of the partition wall insertion member 5200 may be connected to the inner surface of the reinforcing portion and the other side may be connected to one side of the transverse insertion member 5100.

The overlapping description of the connection portion 5020 and the insertion attachment portion 5010 of the barrier-inserting member 5200 will be omitted.

Such a partition wall insertion member 5200 may be considered to divide a corner portion formed between adjacent reinforcing portions into a triangular shape.

As a modification of the partition wall inserting member 5200, it is also conceivable that the cross-shaped partition wall inserting member 5200 has four connecting portions 5020 and is connected in four directions to form four compartments.

As another embodiment, a plate-like insertion member 5300 for vertically partitioning the plate-shaped upper and lower portions in a predetermined space may be disposed as the insertion member.

The plate-like insertion member 5300 can function to prevent upper and lower spaces from being affected by mutual weight by dividing the upper and lower spaces.

Further, as shown in the drawings, it is possible to provide a plurality of holes to fix narrow and long-length articles such as cups. The size and number of holes are optional.

The plate-shaped insertion member 5300 may have a connecting portion 5020 that can be folded in the vertical direction, and the lower end of the folded portion may be supported on the upper surface of the bottom portion 1400 to maintain the height.

At this time, it is preferable that the plate-like insertion member 5300 is made of a hard material such as plastic considering the fixing of a container containing a fluid such as a cup.

Although it is possible to consider formation of the insertion attachment portion 5010 even when the plate-like insertion member 5300 is made of a hard material, such insertion attachment portion 5010 may be omitted for the sake of manufacturing. In this case, It is also possible that the insertion member 5100 and the partition wall insertion member 5200 are inserted into the partition space with the space inside the body portion 1000 in a shape corresponding to the planar shape of the plate-like insertion member 5300 .

The above-described multipurpose delivery bag according to the present invention separates the wall portion constituting the main body portion and the reinforcing portion for reinforcing the wall portion, thereby maximizing storage and storage of articles, reducing folding and volume, do.

Further, since the lid portion and the main body portion are coupled with each other through the magnetic body on three surfaces, the robustness is improved, and the convenience of the detachment is improved, and the stability of the article storage is further improved through the provision of the wing portion.

In addition, since the structure for desorption and folding of the respective members can be optimally formed, convenience in use as well as productivity can be improved, and the inner space can be varied according to the shape of the article as well as the characteristics It is possible to flexibly respond to the delivery environment.

In the foregoing, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content of the following claims.

1000 ... body portion 1010 ... handle portion
1011 ... handle holder portion 1100 ... side wall portion
1110: main body magnetic body part 1130:
1140 < / RTI >< RTI ID = 0.0 >
1300 ... rear wall portion 1330 ... rear portion attaching portion
1400 ... bottom part 2000 ... lid part
2100 ... wing portion 2110 ... wing magnetic portion
2200 ... cover pocket portion 3010 ... reinforced side attachment portion
3100 ... front reinforcing portion 3200 ... rear reinforcing portion
3300 ... side reinforcing portion 4100 ... bottom side holder
4200 ... upper surface attaching portion 4300 ... bottom surface attaching portion
5010 ... insertion attachment portion 5020 ... connection portion
5100 ... transverse insertion member 5200 ... partition wall insertion member
5300 ... plate-shaped insertion member

Claims (7)

A main body portion having a side wall portion, a front wall portion, a rear wall portion and a bottom portion on both sides and an opening formed on the top side;
A lid part connected to the rear wall part vertically rotatably and covering the opening; And
And a plurality of reinforcing portions disposed on an inner wall of the main body portion to maintain an upright state of the side wall portion, the front wall portion and the rear wall portion,
The reinforcing portion
And is housed in a bottom portion of the main body portion. The multipurpose delivery bag is connected to an inner lower edge of the main body portion,
The method according to claim 1,
The lid portion
And a wing magnetic body portion which is disposed on an inner surface of the wing portion and is coupled to a main body magnetic body portion formed on a side surface of the main body portion.
The method according to claim 1,
The rear wall portion includes:
And a backward folding portion formed in a lateral direction so as to be folded in the vertical direction,
The side-
A front folding section which is arranged on the front side so as to be inclined forward and downward, and a side folding section which is arranged on the rear side so as to allow the rear folding section to move forward in the storage state.
The method according to claim 1,
And a bottom side holder extending from both sides of the bottom of the side wall portion and attached to a top surface attachment portion formed on an upper surface of the lid in a storage state to maintain a folded state.
The method according to claim 1,
The side wall portion, the front wall portion,
And is made of a material that is more flexible than the reinforcing portion,
Wherein the lid portion, the bottom portion, and the reinforcement portion are provided with a retaining member that maintains the shape and provides heat insulation performance.
6. The method according to any one of claims 1 to 5,
And at least one insertion member having an insertion attachment portion at both end sides so as to be detachable to the reinforcing side attachment portion disposed on the inner wall of the reinforcing portion, the at least one insertion member defining a space inside the body portion.
The method according to claim 6,
The insertion member
A transverse insertion member arranged to cross the reinforcing portion and the reinforcing portion, a partition wall insertion member connected between the transverse insertion member and the reinforcing portion, and a partition wall insertion member disposed in the space defined by the transverse insertion member or the partition wall insertion member, And a plate-like insertion member for partitioning the bag-shaped insertion member.

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