JPH062901Y2 - Folding container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a foldable container used for transportation and transportation of various articles, and more particularly to a foldable container having a high heat insulating effect.

[Conventional technology]

A conventional folding container of this type includes, for example, as shown in FIG. 5, a frame 21, a bottom plate 22, and an upper plate-like portion 23 rotatably mounted on the frame 21 by a mounting shaft 23. A lower plate-like portion 26 rotatably attached to the bottom plate 22 by a mounting shaft 25 so that these plate-like portions 24 and 26 can be bent inward by a connecting portion 27. A side plate 28 connected to the frame 21 and a tilt plate 30 rotatably attached to the frame 21 by an attachment shaft 29.
It is composed of and, and when the stretched plate 28 is in an extended state, the tilt plate 30 is erected to assemble, and on the contrary, the tilt plate 30 is folded to the side of the frame 21 and then the side plate 28 is folded to be folded It has become.

[Problems to be solved by the device]

The foldable container as shown in FIG. 5 may be made of synthetic resin. Among them, the synthetic resin product is formed by assembling the parts molded by the injection molding method. It wasn't good at the effect. Therefore, it was unsuitable for storing and storing frozen foods and storing ice. In addition, the structure was so complicated that it was troublesome to assemble.

The problem to be solved by the present invention is that each component, especially the bottom plate,
To provide a folding container which can be assembled by molding a side plate and a tilt plate by a blow molding method and press-fitting and fixing them to predetermined portions of a frame in a state where these parts are integrally connected by a hinge part. It is an object.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the folding container of the present invention has a U-shaped cross section arranged with its opening side facing downward.
A frame having a plurality of locking pieces that are spring-shaped and bent inward, and a pair of pieces that face the bottom plate are integrally connected to each other through hinges. Both side plates having a structure in which two plate-shaped members are integrally connected by a hinge part, a first locking member integrally connected by a hinge part on the side opposite to the bottom plate of the both side plates, and a tilt plate, The bottom plate, the both side plates, the first locking member, and the tilt plate and the second locking member are blown respectively. The first and second engaging members are integrally formed by a molding method, and the first and second engaging members have a plurality of fitting portions forming concave portions. By press-fitting from the lower opening of the frame respectively, the fitting portions of the first and second locking members are respectively fitted. It locked bottom plate and two side plates and tilt plate is attached to the frame fitted are locking piece formed in the over arm. Accordingly, in the folding container of the present invention, the two side plates each have two plate-shaped members extending in a plane shape so that the bottom plate and the hinge part form a right angle while the tilting plate is raised. It becomes a box shape that is assembled in the same way as a foldable container, and it can be folded by folding the tilt plate from the hinge part and folding both side plates at the hinge part.

〔Example〕

An embodiment of the folding container according to the present invention will be described below with reference to the drawings.

1 to 4 are views showing an embodiment of the folding container of the present invention, in which 1 is a frame, 2 is a bottom plate 8 is an upper plate-shaped portion 4 and a lower plate-shaped portion 6 is hinged. A pair of left and right side plates are provided so as to face each other with side plates connected so as to be bent at the portion 7. 10 is a swing board. The basic structure is the same as that of the conventional example shown in FIG. 5 except that all of these parts except the frame 1 are formed in a hollow shape in the blow molding direction, and therefore the illustration is made accordingly. If both side plates are folded further from the state shown in Fig. 1, the container will be folded and the frame 1 and the bottom plate 2 will come into contact with each other, resulting in a thin and compact shape. When the plate 10 is raised, it becomes an assembled box shape.

Next, the structure of each part of the folding container of the present invention will be described.

FIG. 2 is a cross-sectional view of the frame portion taken along the line II-II in FIG. 1. As shown in FIG. 2, the cross-sectional shape of the frame 1 has a downward opening U. It has a letter shape, and has engaging pieces 3 that obliquely project inward at a plurality of positions.

The bottom plate 2 and the both side plates 8 are foldably connected to each other by a hinge part 5 as shown in FIG. 3, and the both side plates 8 are also connected to the upper plate part 4 and the lower plate part by the hinge part 7, respectively. It is connected so that it can be bent. Further, the first locking member 11 is provided with the hinge portion 12 on the side opposite to the side of the both side plates 8 connected to the bottom plate 2, that is, on the side opposite to the side connected to the lower plate-shaped portion 6 of the upper plate-shaped portion 4. Are connected together. Thus, the side plates 8 and the first locking members 11 are integrally connected to each other on both sides of the bottom plate 2 through the hinge portions, and as shown in FIG. 3, these parts are arranged in a series. ing. The first
The engaging member 11 has a concave fitting portion 11a having a shape as shown in FIG.
Are formed.

The tilt plate 10 has a shape as shown in FIG. 4, and has a structure in which a second locking portion 13 is integrally connected to one side thereof via a hinge portion 14.

The folding container of this embodiment is formed by combining the above-mentioned respective parts as follows.

First, the second locking member 13, which is integrally connected to the swing plate 10 via the hinge portion 14, is press-fitted from the lower opening of the frame 1. If the locking piece 3 formed on the frame 1 and the fitting portion 13a formed on the second locking member 13 are formed at positions corresponding to each other, the second locking member is formed.
When the locking piece 3 is completely press-fitted into the frame, the locking piece 3 is inserted into the fitting portion.
The fitting portion 13a of 13 is fitted and locked. In this way, the swing plate 10 is inserted and fixed to the frame 1.

Next, a series of molded products in which the bottom plate 2, the side plate 8 and the first locking member 11 shown in FIG. The plate 8 is folded upward so that the bottom plate 2 and the side plate 8 are positioned at a right angle. Here, the locking member 11 connected to the both side plates 8 is
As shown in the figure, the frame 1 is press-fitted through the opening 1a below the frame 1. Here, the locking piece 3 and the locking member 11 of the frame 1
If the first engaging member 11 is press-fitted into the frame 1, the engaging piece 3 is inserted into the engaging portion 11a. The first locking member 11 is locked in the frame 1. Moreover, even if it is attempted to pull it out, the locking piece 3 does not come into contact with the surface of the fitting portion 11a and come off. Further, since the locking member is sandwiched between the tip 3a of the locking piece 3 and the inner surface 1a of the upper end of the frame 1, the vertical movement is restricted and the frame 1 and the locking member are properly fitted (inside the frame 1). If the wall surface and the outer wall surface of the engaging member are in contact with each other, there will be no rattling in the lateral direction.

Thus, it is assembled as shown in FIG.

Among the parts constituting the folding container of the present invention, the bottom plate, the side plate, and the connecting parts in which the locking members are integrally connected through the hinge part shown in FIG. It is possible if you do like this.

As a blow molding die, a cavity provided with a relatively thin wedge-shaped member is used to supply air into the die. At this time, in addition to the air from the air supply pipe that is generally used in blow molding, a separate air supply pipe is provided to the portion enclosed by the wedge and the above air supply pipe that cannot blow air. To do so. As a result, a bottom plate, side plate members, and a locking member are formed in the space formed between the wedge wall and the wedge wall of the mold and the wedges, and the wedge portion is relatively thin. The connecting part is formed as a hinge part.

In this way, the bottom plate and the side plates, in which the upper plate-shaped part and the lower plate-shaped part are connected to each other by the hinges on both sides thereof, and the first locking member are respectively connected by the hinges. The plate and the second locking member connected by the hinge portion are formed by the blow molding method.

In addition, in order to store foamed products such as Styrofoam for heat retention and heat insulation, if an injection port is provided and a foaming agent is appropriately injected and reacted inside, heat insulation with foamable products enclosed Blow products with excellent effects can be made.

[Effect of device]

In the folding container of the invention, each part, especially the bottom plate, the side plate, and the tilt plate are formed by the blow molding method. Therefore, by injecting the foaming agent into the hollow, the heat insulation effect is increased, and Therefore, the conventional folding container can be used for the purpose of storing frozen frozen food, ice storage, etc. Moreover, the assembly can be accomplished with an extremely simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the folding container according to the present invention, FIG. 2 is a sectional view taken along the line II--II of FIG. 1, and FIG. 3 is a bottom plate, a side plate, a first plate integrally connected to the above embodiment. 1 is a side view of the locking member, FIG. 4 is a cross-sectional view of a tilt plate and a second locking member that are integrally connected, and FIG. 5 is a perspective view of a conventional folding container. 1 ... Frame, 2 ... Bottom plate, 3 ... Locking piece, 8 ... Side plate, 10 ...
Tilt plate, 11 ... First locking member, 13 ... Second locking member,
5,7,12,14 ... Hinge part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sho Ito 2-10-12 Shiba Daimon, Minato-ku, Tokyo Showa Denko Ltd. (56) References Showa 59-183892 (JP, U) Showa 61 -103315 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A frame, a hollow bottom plate, and a frame and a bottom plate, which are mounted so as to be rotatable with respect to the frame and the bottom plate, respectively, and are connected to each other so as to be bent inward at a connecting portion.
In a folding container composed of a side plate composed of a single hollow plate-like portion and a hollow tilting plate mounted so as to be rotatable with respect to the frame, the frame has a cross section in which the opening side is arranged downward. The shape is U-shaped and has a plurality of locking pieces inside thereof, and the two side plates are connected to each other by a hinge part that integrates the bottom plate and the two plate-shaped portions forming the both side plates. Of the bottom plate, the first locking member having a plurality of fitting parts is formed by being molded in a state of being connected by a hinge part, and the swing plate is fitted on one side thereof. A second locking member having a hinge is connected by a hinge portion, and the locking piece is inserted into the fitting portion by inserting the first locking member and the second locking member into the frame. Mated and locked Over arm to the bottom plate, folding container shroud and gate panels are assembled is fixed.