JPS5890083A - Folding cool keeping container - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes refrigerated containers (so-called cold roll containers) that are used repeatedly to transport frozen and semi-refrigerated foods (hereinafter simply referred to as products) into covered trucks for delivery from processing centers to stores. box).

Conventionally, this refrigerated container uses a core material of insulating material such as rigid polyurethane foam, and the entire outside is covered with a thin plate such as plywood, hard plastic plate, or aluminum plate.
They used a strong box whose inside was covered with a thin stainless steel plate, with a cold storage agent inserted inside it. This is 4
Three of the vertical walls have fixed walls, the remaining one has a door structure, and the bottom of the box is equipped with casters, making it easy to move to the place where products are loaded and unloaded. Because of these advantages, it was valued as a component of the cold chain. However, in actual use, it is necessary to pre-cool the refrigerated container by placing it in a refrigerated warehouse as an empty box before use, and even after use, it is left empty in a corner of the store. After that, they are transported by truck and returned to the refrigerated warehouse of the processing center. During this process, the space occupied by empty boxes becomes a problem, and a considerable number of users who use refrigerated containers was suffering from warehouse maintenance costs and truck transportation costs. Furthermore, since the structure of the refrigerated container itself is robust as described above, it is also expensive, making it difficult for small and medium-sized users to use it. For this reason, those who cannot use the above-mentioned refrigerated containers should place the product and refrigerant together in inexpensive small expanded polystyrene containers with lids, and transport the containers in stacks on simple roll box pallets. They used products that were inferior in terms of cold retention and handling.

The present invention aims to eliminate the above-mentioned drawbacks of conventional refrigerated containers and to provide a popular version of the refrigerated container at low cost. In other words, in a box made of a plate-shaped foamed plastic core and a heat insulating board covered with a plastic thin plate having hinge characteristics around the foamed plastic, the adjacent wall including the back panel among the four upright wall panels. The two surfaces that meet are used as fixed wall plates, and the whole is folded into an L shape, and each heat insulation plate is placed next to each other to form a fold. It has a continuous thin-walled hinge structure, and its details will be explained below according to the illustrated embodiments.

In the drawing, (1) is a heat insulating box with all six sides assembled with heat insulating plates (2). The insulation board (2) is made of foamed plastic such as foamed polystyrene or foamed polyurethane as the core material (3).
The periphery of the core material (3) is covered with a thin plate (4) of plastic such as polypropylene that has a property (so-called hinge property) that can withstand repeated folding. Since the insulation box (1) has a foldable structure, each insulation board (2) + (
2) , (2) The corners (folds) of the mutually abutting parts that hit the inside when folded are made into a continuous thin hinge (5) structure over the entire length in the longitudinal direction. There is. Various types of folding can be considered, and an appropriate one can be selected in consideration of the conditions of use, but here, as an example, the one shown in FIG. 2 will be explained. This was designed to minimize the area it occupies when folded and to make it easier to handle.
), (6b).

(6c) +' One of the two adjacent surfaces (6a, ) and (6b) of (6d) including the back plate (6a) is L
The fixed wall plate (7) is shaped like a fixed wall plate (7), and the top plate (8) is moved downward to the bottom plate (9
) upwards around the hinges (5) and (5) respectively, fold the other adjacent 2 including the front & (60)
The surfaces (6c) and (6d) are connected to the movable side plate (6d) and the back plate (6a) along the fixed wall plate (7) of the above-mentioned shape.
), and the front plate (6C) is folded inside the fixed side plate (6b) around the hinge (5) l (5).

Here, the structure of the hinge (5) mentioned above will be explained in detail. The structure of the hinge (5) to enable folding is as follows.
As shown in Figure 3, it can be embedded in the plastic thin plate (4) covered around the outer periphery of the heat insulating plate (2), or it can be installed separately from the thin plate (4) as shown in Figure 4. In this way, a method will be adopted in which a hinge (5) corresponding to the total length in the longitudinal direction of the required location is separately attached. Alternatively, it is of course conceivable to use both methods together, but in any case, it is necessary to form a continuous thin wall portion α0) over the entire length of the required portion in order to ensure smooth bending at the portion where the hinge (5) is bent. There is. Note that the thin plastic plate (4) does not need to be a solid plate as long as it has a hinge characteristic, and may be a hollow plate such as a plastic cardboard.

Although the above-mentioned insulating box (1) alone can be used as a cold storage container, the structure for facilitating handling during transportation will be described next. Figure 5 is an overall view of the refrigerated container (11) of the present invention, with a U-shaped base (□□□
The lower four corners ← are casters αg), Qs), Q
s).

03), and pillars 0→l (14) are installed at the four corners of the top.
+ <14) + (+4) 1 is erected to support the four corners in the height direction of the insulating box (1), and further supports the insulating box (1).
) The frame (b)) is also applied to the other necessary parts of the ridge, creating a reinforced structure as a whole. The U-shaped base (B) is designed to work with the insulation box (1) when folded.
The fixed frame 06) and the movable side frame 0'7) are rotatably connected by a hinge with a pin (b). These foundations (
As shown in
) can be manufactured separately. Therefore, when assembling, after inserting the insulation box (1) from the open part at the top end, fix the upper hinge with pin to the exterior frame to complete the refrigerated container that is easy to fold and move. .

However, when the exterior frame (goods) and the insulating box (1) are integrated, the hinge (5) connecting the front plate (6c) of the insulating box (1) and the movable side plate (6a) ) is no longer needed, and instead, the door hinge with pin () and Ql) are attached to the corresponding location of the exterior frame α9), and the front plate (6c) is fixed to the corresponding location of the exterior frame (to). Become.

The present invention has the above-described structure.Next, how to use the same will be explained by taking as an example a process in a cold chain in which a product leaves a processing center, goes to a store, and returns to the processing center again. At the processing center, the seventh
Arrange the folded storage and cold containers (11) as shown in the diagram, place them in a refrigerated warehouse and pre-cool them (in the diagram,
(The four shuttles indicated by imaginary lines are cold storage containers before being folded.) Immediately before storing the products, they are taken out of the warehouse and assembled on the spot. Assemble the front plate (6c) first.
While pulling out the section toward you, open the movable side plate (6d) section outward and remove the L-shaped fixed wall plate (7) section and the movable side panel (6d) section.
Form a U-shape consisting of the parts, apply the brakes provided on the casters to fix it, then lift the top plate (8) upwards and knock down the bottom plate (9) downwards. In this state, the front plate (6C) serving as a door is open, so products can be placed immediately. Usually, products are stored in advance on pallets, and then stored in refrigerated containers by stacking the pallets. Next, a cool storage agent such as dry ice is inserted into the upper space, and the front plate (6C) is closed to complete the product storage operation. After that, the caster brakes were released and dozens of refrigerated containers (
11) are loaded one after another, the caster brakes are applied, and the container is delivered to the store like a conventional refrigerated container. At the store,
Cold storage container of the present invention unloaded from a covered truck (11
) to the sales floor and place it on the front board (6C) in front of the designated display shelf.
) section, take out the product, and display it on the display shelf.

Since the refrigerated container from which the products and pallets have been removed becomes an empty box, it is folded on the spot by performing the reverse assembly operation described above. In stores that use a considerable number of containers, it is possible to temporarily store used refrigerated containers in a corner of the store, as shown in FIG. 7, until a pickup truck arrives. When it is returned, it is folded and loaded onto a truck in the state shown in Figure 7, and returned to the processing center. The returned refrigerated containers are stored in a refrigerated warehouse in preparation for their next use, but at this time they are also pre-cooled in the state shown in Figure 7.

Since the present invention has the structure and method of use as described above, the work required for assembling the product when storing it in a cold container and folding it when taking it out is as simple as described above. What's more, this work can be done naturally during the process of moving refrigerated containers, so workers who are accustomed to handling conventional refrigerated containers will not feel any discomfort. Will. In addition, when products are not stored, they can be folded and put away in an extremely small space as shown in Figure 17, which reduces the need to maintain refrigerated warehouses for pre-cooling. The number of occupied spaces at the store has been reduced, and as a result, more sales space can be secured, leading to greater profits.Furthermore, the cost of transporting trucks used for return shipments has been reduced. Therefore,
It is expected that all businesses involved in the cold chain that handle frozen and refrigerated foods will benefit.

As a result, demand for the refrigerated container of the present invention is expected to increase, and manufacturers of refrigerated containers will be able to increase their profits by reducing handling costs during the manufacturing process and transportation costs during shipping. This makes it possible to provide inexpensive refrigerated containers. Therefore, it can be said that the benefits that the cold storage container of the present invention brings to industry are extremely large. In addition, since the hinge structure for folding the insulating box is continuous over the entire length of the required part, airtightness can be maintained, and the necessary cold insulation effect can be achieved as much as that of conventional cold storage containers.

[Brief explanation of the drawing]

FIG. 1 is a transparent perspective view of an assembled heat insulating box according to an embodiment of the present invention. FIG. 2 is a transparent perspective view of the heat insulating box according to the embodiment of the present invention in a folded state. FIGS. 3 and 4 are enlarged sectional views of essential parts showing the folded portion of the heat insulating box in the embodiment of the present invention, respectively. FIG. 6 is a perspective view of an exterior frame body in an embodiment of the present invention. 7th
The figure is a plan view of the embodiment of the present invention when folded and aligned. l is the insulation box, 2 is the insulation board, and 3 is the core material. 4 is a thin plastic plate, and 5 is a hinge. 6a is the back plate, 6b is the fixed side plate. 6c is a front plate, 6 (L is a movable side plate, 7 is an L-shaped fixed wall plate, 8 is a top plate. 9 is a bottom plate, 10 is a thin part, 19 is an exterior frame patent company - person iv) Figure 3 Hand Continuing amendment (method) April 1982
May 26, 1986, Mr. Commissioner of the Japan Patent Office, 1. Indication of the case: Patent Application No. 185175 of 1985, 3, Relationship with the case of the person who made the amendment. 30th) 5. Brief explanation of the drawings of the specification to be amended - 6. [This is an enlarged cross-sectional view of the main parts] on page 11, second line from the top of the specification to be amended. ], insert ``Figure 5 is a perspective view showing the external appearance of a container in an embodiment of the present invention.''.

Claims (1)

[Claims] In a box that combines a heat insulating board made of a plate-shaped foamed plastic core and the foamed plastic covered with a plastic thin plate having hinge characteristics, adjacent upright wall panels including the back panel are The entire body shall be folded into an L shape with the two sides as fixed wall plates, and each heat insulating plate will be adjacent to each other to form a folded portion, and the required portions of the thin plastic plate shall be continuous over the entire length of the folded portion. A foldable refrigerated container with a thin-walled hinge structure.