JP4044828B2 - Folding container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folding container used for storing, transporting or transporting various articles.
[0002]
[Prior art]
A conventional folding container will be described with reference to FIGS.
[0003]
The folding container has an upper frame 1, a bottom portion 2, and a side wall that is hinged at the upper end of the upper frame 1 and is pivotable inward of the folding container (hereinafter, this side wall is referred to as a flip-up side wall) 3. And a side wall (hereinafter, this side wall will be referred to as a divided side wall) 4 which is divided into upper and lower parts and connected via an appropriate hinge part. The divided side wall 4 sandwiches the hinge part. The upper divided side wall 4 ′ located above and the lower divided side wall 4 ″ located below the hinge part, and the upper end of the upper divided side wall 4 ′ is hinged to the upper frame 1. Further, the lower end of the lower divided side wall 4 ″ is hinged to the bottom 2.
[0004]
The substantially vertical flip-up side wall 3 of the box-shaped folding container shown in FIG. 3 is rotated in the inner direction of the folding container so as to be in a substantially horizontal state as shown in FIG. The hinge part connecting the upper divided side wall 4 ′ and the lower divided side wall 4 ″ constituting the divided side wall 4 is moved toward the inside of the folding container, and the upper divided side wall 4 ′ and the lower divided side wall 4 ″ are moved. By stacking, the box-shaped folding container can be folded into a compact state with a low height as shown in FIG. Further, the upper frame 1 is lifted with respect to the bottom portion 2 so that the upper divided side wall 4 ′ and the lower divided side wall 4 ″, which are overlapped in a substantially horizontal state, stand substantially vertically so as to be substantially flush with each other, A folded container in a folded state is configured to be assembled into a box shape by rotating a flip-up side wall 3 whose upper end is hinged to the upper frame 1 from a substantially horizontal state to a vertical direction. Yes.
[0005]
A plurality of recesses 4a are formed at predetermined intervals in the central region of the lower end portion of the lower split side wall 4 '' that constitutes the split side wall 4, and a horizontal hinge pin 5 is provided between the opposing side plates that constitute the recess 4a. Further, support pieces 4b are formed in the vicinity of both ends of the lower end portion of the lower divided side wall 4 ″, and the support piece 4b and the lower end portion of the lower divided side wall 4 ″ opposed to the support piece 4b Between them, an end recess 4c is formed. Further, a horizontal hole 4b1 is formed in the support piece 4b, and a horizontal hole (not shown) is formed in a side plate facing the support piece 4b. .) Is drilled.
[0006]
The bottom 2 has a substantially rectangular planar shape, a flat top plate 2a, and a peripheral frame 2b formed so as to surround the periphery of the bottom plate 2a and substantially perpendicular to the bottom plate 2a. have. Further, on the inner surface of the long side frame 2b1 constituting the peripheral frame portion 2b, a locking hook 6 comprising a horizontal portion 6a and a hook portion 6b that goes downward from the tip of the horizontal portion 6a is formed in a cantilever shape. In addition, a locking projection 7 projects from the bottom plate portion 2 a located below the hook portion 6 b of the locking hook 6. The locking hook 6 is formed corresponding to the horizontal hinge pin 5 that bridges the concave portion 4a formed at the lower end portion of the lower divided side wall 4 ″ described above. Further, the long side frame 2b1 constituting the peripheral frame portion 2b. A pair of support protrusions 8 are erected at a predetermined interval on the bottom plate part 2a located in the vicinity of both ends of the frame and in the vicinity of the long side frame 2b1. A horizontal hole 8a is drilled, and the locking projection 7 does not need to be formed in the bottom plate portion 2a located below the hook portion 6b of the locking hook 6, but at a position away from the locking hook 6. It can also project.
[0007]
A horizontal hinge pin 5 bridged by a recess 4a formed at the lower end of the lower divided side wall 4 "is connected to a hook portion 6b of a locking hook 6 disposed on a long side frame 2b1 constituting the peripheral frame portion 2b of the bottom portion 2. And the horizontal hinge pin 5 is engaged with the hook portion 6b of the locking hook 6. The horizontal hinge pin 5 is engaged with the hook portion 6b of the locking hook 6 by being inserted into a gap formed between the locking projection 7 protruding from the bottom plate portion 2a positioned below the hook portion 6b. And a support piece 4b formed near both ends of the lower end of the lower divided side wall 4 "is fitted between a pair of support protrusions 8 projecting from the bottom plate 2a of the bottom 2, and Both ends of the short side frame 2b2 constituting the peripheral frame portion 2b are inserted into the horizontal hole 4b1 of the support piece 4b formed in the divided side wall 4 "and the horizontal hole 8a of the support projection piece 8 protruding from the bottom plate portion 2a of the bottom portion 2. By inserting the fitting pin 9 from the through hole 2b2 'drilled in the part, the lower divided side The wall 4 "and the bottom 2 are configured to be hinged.
[0008]
Folding containers having the above-described configuration are disclosed in Utility Model Registration No. 2600854, Utility Model Registration No. 2589167, and Japanese Utility Model Publication No. 7-8420.
[0009]
[Problems to be solved by the invention]
In the conventional folding container described above, the locking hook 6 on the bottom 2 side constituting the hinge connecting portion between the lower divided side wall 4 ″ and the bottom 2 is separated from the inner surface of the peripheral frame 2 b of the bottom 2 in a substantially horizontal direction. Since it extends in the shape of a hand, there is a problem that when the load is applied to the lower divided side wall 4 ″ and the lower divided side wall 4 ″ fluctuates greatly, the locking hook 6 is damaged.
[0010]
Further, since the locking hook 6 is cantilevered and formed on the peripheral frame portion 2b of the bottom portion 2, the hook portion 6b of the locking hook 6 is easy to move in the vertical direction. During the rotation, the horizontal hinge pin 5 engaged with the hook portion 6b swings, and there is a problem in that the lower divided side wall 4 ″ is not smoothly rotated. Further, even if the locking hook 6 does not swing, the horizontal hinge pin 5 easily moves in the horizontal direction. Therefore, there is a problem in that the lower divided side wall 4 ″ cannot be smoothly rotated.
[0011]
Furthermore, if the thickness of the locking hook 6 or the peripheral frame portion 2b is increased in order to increase the strength of the locking hook 6, there is a problem that the weight of the folding container increases.
[0012]
An object of the present invention is to solve the problems of the above-described conventional folding container.
[0013]
[Means for Solving the Problems]
The present invention, in order to achieve the object described above, has an upper frame, a bottom, a side wall lift-up the upper end portion is hinged to the upper frame, and a divided side wall consisting of a top part side wall and the lower dividing side walls In addition, the upper end of the upper divided side wall is hinged to the upper frame, the lower end of the upper divided side wall is hinged to the upper end of the lower divided side wall, and the lower end of the lower divided side wall is connected to the bottom. In a folding container that is hinged, a horizontal hinge pin that bridges the recess formed at the lower end of the lower divided side wall is engaged with a cantilevered hook formed on the side frame that forms the bottom frame. By combining, the lower end of the lower divided side wall is configured to be hinged to the bottom, and a locking hook formed on the side frame that forms the peripheral frame of the bottom That a bottom plate portion of the horizontal portion and the bottom is the concatenation by the reinforcing connecting rib. .
[0014]
【Example】
Examples of the present invention will be described below. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded. In addition, the folding container of the present invention has substantially the same configuration as the conventional folding container described above except that the configuration of the hooks on the bottom side constituting the hinge connecting portion between the lower divided side wall and the bottom is different. Therefore, the same reference numerals are used for the same constituent members, and detailed description thereof is omitted.
[0015]
Also in this embodiment, on the inner surface of the long side frame 2b1 constituting the peripheral frame portion 2b of the bottom portion 2, there is a locking hook 6 comprising a horizontal portion 6a and a hook portion 6b extending downward from the tip of the horizontal portion 6a. , Is cantilevered.
[0016]
Further, in this embodiment, at least a gap between the horizontal portion 6a constituting the locking hook 6 formed on the long side frame 2b1 constituting the peripheral frame portion 2b of the bottom portion 2 and the bottom plate portion 2a of the bottom portion 2 is provided. A reinforcing connecting rib 10 to be connected is formed. The reinforcing connecting rib 10 can also be connected to the long side frame 2b1 constituting the peripheral frame portion 2b.
[0017]
As described above, at least the reinforcement that connects the horizontal portion 6a constituting the locking hook 6 formed on the long side frame 2b1 constituting the peripheral frame portion 2b of the bottom portion 2 and the bottom plate portion 2a of the bottom portion 2. By forming the connecting rib 10, the strength and rigidity of the locking hook 6 are enhanced, and therefore, the locking hook 6 can be prevented from being damaged and the hook portion 6 b of the locking hook 6 can be changed in the vertical direction. Is suppressed, and the swing of the horizontal hinge pin 5 engaged with the hook portion 6b during the rotation of the lower divided side wall 4 ″ is suppressed, so that the lower divided side wall 4 ″ can be smoothly rotated.
[0018]
Further, at least the reinforcing connecting rib 10 that connects the horizontal portion 6a that forms the locking hook 6 formed on the long side frame 2b1 that forms the peripheral frame portion 2b of the bottom portion 2 and the bottom plate portion 2a of the bottom portion 2. The horizontal movement in the locking hook 6 of the horizontal hinge pin 5 cross-linked to the recess 4a formed in the lower divided side wall 4 "is suppressed, so that the lower divided side wall 4" can be rotated. It will be done more smoothly.
[0019]
Furthermore, at least a reinforcing connecting rib that connects between the horizontal portion 6a constituting the locking hook 6 formed on the long side frame 2b1 constituting the peripheral frame portion 2b of the bottom portion 2 and the bottom plate portion 2a of the bottom portion 2. By forming 10, the thickness of the bottom part 2 including the locking hook 6, the peripheral frame part 2b, the bottom plate part 2a and the like can be reduced, so that the weight of the entire folding container can be reduced.
[0020]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0021]
A horizontal hinge pin is bridged in a recess formed at the lower end of the lower divided side wall, and is formed in a cantilevered manner on the peripheral frame portion of the bottom, and between the locking hook and the bottom where the horizontal hinge pin is engaged. Since the reinforcing connecting ribs are formed, the strength and rigidity of the locking hooks are increased, so that the locking hooks can be prevented from being damaged and the vertical movement of the locking hooks is suppressed, Since the swing of the horizontal hinge pin engaged with the hook portion during rotation of the divided side wall is suppressed, smooth rotation of the lower divided side wall can be realized.
[0022]
The horizontal hinge pin is bridged in the recess formed in the lower end of the lower divided side wall, and is formed in a cantilever manner on the peripheral frame portion of the bottom, and between the locking hook and the bottom that is engaged with the horizontal hinge pin As a result, the horizontal movement of the horizontal hinge pin in the locking hook is suppressed, so that the lower divided side wall can be rotated more smoothly.
[0023]
The horizontal hinge pin is bridged in the recess formed in the lower end of the lower divided side wall, and is formed in a cantilever manner on the peripheral frame portion of the bottom, and between the locking hook and the bottom that is engaged with the horizontal hinge pin Since the reinforcing connecting ribs for connecting the two are formed, the thickness of the locking hook and the bottom can be reduced, so that the weight of the entire folding container can be reduced.
[Brief description of the drawings]
FIG. 1 is a partially exploded perspective view of a lower divided side wall and a bottom constituting a folding container according to the present invention.
FIG. 2 is a vertical sectional side view of a lower divided side wall and a bottom constituting the folding container of the present invention.
FIG. 3 is a perspective view of a conventional folding container assembled in a box shape.
FIG. 4 is a perspective view during assembly or folding of a conventional folding container.
FIG. 5 is a perspective view of a state in which a conventional folding container is folded.
FIG. 6 is a partially exploded perspective view of a lower divided side wall and a bottom constituting a conventional folding container.
FIG. 7 is a vertical cross-sectional view of a lower divided side wall and a bottom constituting a conventional folding container.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ..... Upper frame 2 ..... Bottom part 3 ..... Bounce-up side wall 4 ...... Split side wall 4 '... .... Upper divided side wall 4 "... Lower divided side wall 5 ... Horizontal hinge pin 6 ... Locking hook 10 ... Reinforcing connection rib

Claims (1)

An upper frame, a bottom, a side wall lift-up the upper end portion is hinged to the upper frame, which has a divided side wall consisting of a top part side wall and the lower dividing side wall, the upper end of the top part side wall, the upper frame In a folding container that is hinged, the lower end of the upper divided side wall is hinged to the upper end of the lower divided side wall, and the lower end of the lower divided side wall is hinged to the bottom . By engaging a horizontal hinge pin that bridges the recess formed at the lower end with a cantilevered hook formed on the side frame that constitutes the peripheral frame of the bottom, the lower end of the lower divided side wall is The horizontal portion constituting the locking hook formed on the side frame constituting the peripheral frame portion of the bottom portion and the bottom plate portion of the bottom portion are configured to be hinged to the bottom portion. Container folded and characterized in that it is connected by.

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