JP4447727B2 - Transport container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transport container, and more particularly, to a transport container that is provided with a leg portion protruding from an outer surface of a side wall and is stacked in a state where the leg portion is placed on an upper surface of a flange of a lower container.
[0002]
[Prior art]
2. Description of the Related Art A transport container capable of stacking and nesting is known as a synthetic resin container used for storing and transporting articles. In other words, with the transport container facing in the same direction, the legs provided on the outer surface of the side wall are placed on the flange of the lower container and stacked, and when one of the containers is empty, Transport containers that can be nested when rotated 180 degrees are widely used.
[0003]
Such a container capable of stacking and nesting is a box-shaped container in which a side wall is erected at the bottom of a flat rectangular shape, and a flange that protrudes horizontally outward is provided at the upper end of the side wall. Leg portions projecting outward are provided near the four corners of the outer surface, and concave portions are provided on the inner surface near the four corners so that the leg portions are fitted when rotated and rotated in the horizontal direction by 180 degrees. When stacking, if the containers are stacked in the same direction, it is possible to place the lower end surface of the leg of the upper container on the upper surface of the flange of the lower container and stack it. Nesting can be performed by fitting the legs of the container into the recesses of the lower container.
[0004]
[Problems to be solved by the invention]
When stacking the containers above configuration, placing the legs of the sliding direction leading end side of the upper container on the upper flange surface of the lower container is slid while slightly lifting the front, lower end of the leg portion of the upper container lower container Since it slides in a state where it is submerged from the upper surface of the flange, the lower end portion of the leg portion abuts against the inner edge portion of the side wall.
[0005]
Therefore, when the slide is stopped, stacking is performed in an unstable state with a part of the bottom portion resting on the upper surface of the flange. In such a case, it was necessary to pull it back and slide it again and push it strongly to make it stack or to lift it and slide it. In addition, when trying to slide for stacking, not only must a large force be applied, but there is also a risk of load collapse due to impact.
[0006]
In order to solve such a problem, for example, it has been proposed to form a relief in the leg portion as described in JP-A-6-3836. However, the transport container described in the above publication has problems that the mounting state of the support legs becomes unstable and a large escape cannot be formed.
[0007]
Therefore, the present invention provides a transport that can be smoothly and reliably stacked even when the lower end of the leg portion of the upper container contacts the flange inner surface edge of the lower container when the transport container is slid and stacked. A container is provided.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is configured as follows. In other words, transportation container of the invention, while standing side walls on the bottom of a square planar shape, with the upper edges of the side walls providing the flange, to project the legs the corners near the side wall outer surface, the flange inner In this case, the bottom part of the upper part of the leg of the upper container is placed on the upper surface of the flange of the lower part container when stacked in the same direction. In the transporting container in which the legs of the upper container can be nested by being inserted into the recesses of the lower container when one of the containers is horizontally stacked 180 degrees and stacked , The bottom surface of the container is a horizontal surface located above the bottom surface of the container bottom and is formed continuously from the outer surface of the side wall so that it can be stacked while being slid from any of the four directions. Department and front The entire surface of the square flange inner surface edges except a recess, characterized in that the formation of the chamfered portion for stacking while raising smoothly escape collision of the tip of the leg portion. The chamfered portion can be formed by a tapered surface or a rounded surface.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiments shown below. The transport container 10 is provided with side walls 11, 12, 13, 14 erected on the four circumferences of the rectangular bottom portion 15, and provided with flanges 20 projecting outward at the upper end edges of the side walls 11, 12, 13, 14, A flange 30 is provided on the outer peripheral surface of a substantially intermediate portion in the height direction. Reinforcing ribs 11a, 12a, 13a, and 14a for connecting the flange 20 and the flange 30 are provided on the outer peripheral surfaces of the side walls 11, 12, 13, and 14, respectively.
[0010]
Further, in the vicinity of the four corners, leg portions 21, 22, 23, 24 project from the outer peripheral surface so that stacking and nesting are possible, and the leg portions 21, 22, 23, 24 are fitted into the inner peripheral surface. 31, 32, 33, and 34 are provided. The lower surfaces of the leg portions 21, 22, 23, 24 are located above the lower surface of the bottom portion 15, in other words, the bottom portion 15 projects slightly below the lower surfaces of the leg portions 21, 22, 23, 24. ing.
[0011]
The leg portions 21 and 22 are provided to face the side walls 12 and 14 in the longitudinal direction, and the leg portion 21 is formed wider than the leg portion 23. The leg 23 is provided on the side wall 13, and the leg 24 is provided on the side wall 11. Further, the side walls 12 and 14 are provided with concave portions 31 and 32 into which the leg portions 21 and 22 are fitted in point symmetry, and the side wall 13 is provided with a concave portion 33 into which the leg portion 24 is fitted. Is provided with a recess 34 into which the leg 23 is fitted.
[0012]
In the above configuration, in the relationship between the leg portion 21 and the recess portion 31, the leg portion 21 is provided closer to the corner of the container than the recess portion 31, and in the relationship between the leg portion 22 and the recess portion 32, the recess portion 32 is provided closer to the corner of the container than the leg 22. Further, in the relationship between the leg portion 23 and the recess portion 33, the leg portion 23 is provided closer to the corner of the container than the recess portion 33, and in the relationship between the leg portion 24 and the recess portion 34, One is provided closer to the corner of the container than the leg 24.
[0013]
Accordingly, when the transport containers 10 are stacked in the same direction, the bottom 15 of the upper container is fitted into the opening of the lower transport container, and the legs 21, 22, 23, 24 of the upper container are fitted. Are stacked on the upper surface of the flange 20 of the lower container . Further, when one of the transport containers 10 is horizontally rotated 180 degrees and stacked in the opposite direction, the legs 21, 22, 23, 24 of the upper container are the recesses 32, 31, 34, 33 of the lower container. Nested by inserting each into the.
[0014]
Further, as shown in FIG. 1, chamfered portions 11b, 12b, 13b and 14b are provided on the inner edge of the flange 20 on the side walls 11, 12, 13 and 14, except for the four corners. The corners of the inner edge are cut off. The chamfered portions 11b, 12b, 13b and 14b are continuously formed on the side walls 11, 12, 13 and 14 including the portions corresponding to the leg portions 21, 22, 23 and 24, respectively. The chamfered portions 11b, 12b, 13b, and 14b can be tapered or rounded.
[0015]
The chamfered portions 11b, 12b, 13b and 14b are formed larger than the rounded surfaces at the corners, and the tip portions of the leg portions 21, 22, 23 and 24 collide when stacking while sliding. It is formed so as to prevent it from coming into contact and gently slide it up as it is. The sizes of the chamfered portions 11b, 12b, 13b, and 14b may be determined in consideration of the protruding amount of the leg portions, the clearance between the opening of the lower transport container and the bottom of the upper transport container when stacking.
[0016]
The chamfered portions 11b, 12b, 13b, and 14b can be stacked while being smoothly slid while preventing the front end of the leg from colliding, and articles can be easily put in and out. If the flange inner edge protrudes during loading and unloading of articles, there is a risk of collision, so the flange inner edge is made to have a large tapered surface or a rounded surface rather than beveled at a right angle. , It is possible to prevent an article from colliding during loading and unloading. In particular, it is effective for a container for storing and storing articles that are deformed or fragile. Therefore, the chamfered portions 11b, 12b, 13b and 14b are preferably formed on the entire inner surface edge of the flange 20 except for the corners as in the above embodiment, but the portions where the tip ends of the legs collide, That is, you may form only in the flange upper surface corresponding to a leg part.
[0017]
Next, the operation of the chamfered portions 11b, 12b, 13b and 14b according to the above configuration will be described. As shown in FIG. 4, when the transport container 10 is directed in the same direction and the leg portion 21 is placed and slid in a state where the leg portion 22 side is slightly lifted, the tip of the bottom portion 15 becomes the lower transport container. It fits into the opening and slides with the leg 21 resting on the upper surface of the flange 20. When sliding in such a state, the lower end tip portion of the leg portion 24 comes into contact with the chamfered portion 11 b of the inner edge portion of the flange 20 on the side wall 11. If it is further slid as it is, it gradually rises along the chamfered portion 11 b and the lower surface of the leg portion 24 is placed on the upper surface of the flange 20. In this way, stacking is completed simply by sliding.
[0018]
In the stacking state, a chamfered portion is provided at the inner edge of the flange, and the lower surface of the leg is formed in a horizontal plane, so that the stacking is ensured and the leg is placed on the upper surface of the flange in a stable state.
[0019]
【The invention's effect】
As is apparent from the above description, according to the transporting container according to the present invention, when the upper container is laid and stacked, the leg rises along the chamfered portion even if the leg abuts against the flange inner edge. Therefore, it can be smoothly stacked while sliding. Further, when the chamfered portion is provided on the entire flange inner surface edge portion except for the corner portion, the articles are less likely to collide and can be smoothly put in and out.
[Brief description of the drawings]
FIG. 1 is a perspective view of a transport container showing an embodiment of the present invention.
FIG. 2 is a bottom view of the same.
FIG. 3 is a cross-sectional view of a main part.
FIG. 4 is a side view showing a stacking method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Transport container 11, 12, 13, 14 Side wall 11a, 12a, 13a, 14a Reinforcement rib 11b, 12b, 13b, 14b Chamfer 15 Bottom 20 Flange 21, 22, 23, 24 Leg 30 Flange 31, 32, 33 , 34 recess

Claims (2)

Erected side wall to the bottom of a square planar shape, with the upper edges of the side walls providing the flange, while projecting the legs at the corners near the side wall outer surface, the flange inner position of point symmetry to the legs By forming the recesses into which the legs are inserted, the lower surfaces of the upper container legs are stacked on the flange upper surface of the lower container when stacked in the same direction, and one container is horizontally 180 °. In the case of a transporting container in which the legs of the upper container can be nested by being inserted into the recesses of the lower container, the bottom surface of the leg part is lower than the bottom surface of the container bottom part. It is a horizontal plane located above, and is formed continuously from the outer surface of the side wall, so that it can be stacked while sliding from any direction of the four sides, except for the four corners and the recesses, the flanges on all sides Inside The entire surface of the edge, the transport container, characterized in that the formation of the chamfered portion for stacking while raising smoothly escape collision of the tip of the leg portion.   2. The transport container according to claim 1, wherein the chamfered portion is formed by a tapered surface or a rounded surface.

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