JP5155032B2 - container - Google Patents

Description

  The present invention relates to a container that is repeatedly used for transporting and storing products, materials, and other distribution items, and is used by being stacked in multiple stages for storage in a warehouse or the like, and in particular, for pallets, sleeves, and caps. The present invention relates to a container configured to be assembled and disassembled by three members and having a pallet that can be nested.

Various types of containers are known as containers used for transporting and storing products and materials.
In recent years, a container configured to be assembled and disassembled from three members of a pallet, a sleeve, and a cap is known (for example, see Patent Document 1).
This container is configured to be used repeatedly for transportation and storage of products and materials, etc., and in an assembled state, the container can be stacked and used in a warehouse or the like.
The pallet and cap that make up the container are integrally formed by hot cold molding (deep drawing press molding) using thermoplastic resin or other synthetic resin materials, and the sleeve is made of relatively light paper. Or plastic cardboard.
Japanese Patent Laying-Open No. 2004-10127 (see paragraph numbers 0010, 0011, 0014, 0028 and FIGS. 2, 5, and 6)

By the way, conventionally known containers including the container described in Patent Document 1 above, the load (weight) of the upper container when stacked in a plurality of stages is received by the entire surface of the cap of the lower container. It is received by the sleeve and pallet of the lower container.
Therefore, conventionally, as shown in FIG. 1 and FIG. 3 of Patent Document 1, a grid-like reinforcing rib group is integrally provided on the entire back surface of the cap (upper lid) and the like to withstand the load of the upper container. It was necessary to give the cap strength to the load.
Therefore, in the case of conventional containers, the material cost for forming caps with high load-bearing strength by reinforcing ribs and the need to make a mold with a complicated structure cause the cost of production to increase due to high mold production costs. It was.

  Further, as described above, the container is repeatedly used for transportation and storage of products and materials by assembling and disassembling. This assembly / disassembly is performed by the operator, but the weight of the cap itself is considerably increased by the reinforcing rib group, so when the cap is lifted and assembled to the height of the sleeve standing on the pallet, Improvements in handling such as heavy labor were also desired.

  Therefore, the present invention was created to solve the above-mentioned problems, and it is possible to reduce production costs by reducing material costs, mold production costs, etc., and to achieve a significant weight reduction. An object of the present invention is to provide a container having an improved cap so that the load of the upper container can be received by the sleeve of the lower container through only the outer peripheral portion of the cap of the lower container.

In order to solve the above-mentioned problems, in the present invention, a pallet, a sleeve standing on the inner side of the outer peripheral edge of the pallet and inserting a lower end opening edge side into a surrounding shape, and an outer periphery of the upper end opening edge of the sleeve. A container that can be assembled and disassembled from a cap that inserts the inner periphery of the sleeve and closes the upper end opening of the sleeve, and can be stacked in multiple stages in an assembled state;
The pallet is provided with a taper engaging portion inclined downward inward on the outer periphery of the lower surface placed so as to be dropped into the cap, and the cap is slightly smaller than the opening area of the sleeve, A bulging portion formed so as to be elastically deformable up and down, and an outer peripheral load receiving portion that is continuously provided around the bulging portion and is inserted and engaged with the upper end opening edge of the sleeve from above. Formed,
The outer periphery load receiving portion is formed from an upper end surface of the upper end opening edge portion of the sleeve along an outer peripheral surface thereof in a substantially reverse L-shape in a longitudinal cross-sectional view, and from the outer peripheral frame portion, A pallet receiving frame portion provided continuously with the bulging portion so as to be recessed toward the inside of the sleeve, and
The pallet receiving frame portion is continuously arranged in a downwardly inclined shape from at least the upper side portion of the outer peripheral frame portion toward the inside of the sleeve, and is placed so that the taper engaging portion of the pallet is dropped. Comprising a taper mounting portion,
The bulging portion is formed in a substantially drum-like shape that protrudes upward and has a predetermined height from the inclined lower end of the taper mounting portion, the thickness being thinner than the thickness of the pallet receiving frame portion. When the pallet of the upper container is placed on the cap of the container, the pallet receiver is provided with the tapered mounting portion that is bent so as to rebound from the upward protruding state to the downward protruding state by the load of the upper container. When the frame portion is pulled inward and the load of the upper container is removed, the frame portion is formed so as to elastically return to the upward projecting shape.

Here, the pallet and the cap are formed by hot cold molding using a synthetic resin material such as a thermoplastic resin material.
The pallet receiving frame portion is connected to the taper placement portion and the taper placement portion substantially horizontally from the inclined lower end of the taper placement portion toward the inside of the sleeve, and the horizontal inward end portion is It is preferable that the bulging portion is formed in a substantially horizontal L-shape in a longitudinal sectional view from a horizontal continuation portion that is continuous with the bulging base end of the bulging portion, and the upward protruding height of the bulging portion The height of the pallet receiving frame portion is preferably lower than the height of the upper side portion of the outer peripheral frame portion.

According to such a configuration, the lower end opening edge of the sleeve is inserted inside the outer peripheral edge of the pallet so that the sleeve is erected in a surrounding shape, and the upper end opening edge of the sleeve is formed along the outer periphery of the cap. The inside of the outer peripheral frame portion of the outer peripheral load receiving portion is inserted, the upper end opening of the sleeve is closed with a cap, and the container is assembled.
When a plurality of containers assembled in this way are stacked, the pallet of the upper container is placed so as to be dropped into the cap of the lower container. That is, the pallet of the upper container is placed in the outer peripheral load receiving portion of the cap until the tapered engagement portion on the outer periphery of the lower surface is placed on the tapered mounting portion of the pallet receiving frame portion that forms the outer peripheral load receiving portion of the cap of the lower container. Dropped.
At this time, when the bottom surface (bottom part) of the pallet of the upper container hits the bulging protrusion end surface of the bulging part of the cap of the lower container, and the load of the upper container begins to be applied to the bulged part, It is deformed so as to be pushed inward (downward) of the sleeve of the lower container by the load. And when the bulging part is pushed down and deformed to the lower region part beyond the bulging base end (dead point) connected to the taper mounting part of the pallet receiving frame part or the horizontal connecting part, it protrudes downward. Bend to bounce back into shape. Then, the pallet receiving frame part of the outer periphery load receiving part of the cap is pulled toward the inner side (center direction) of the sleeve.
As a result, the pallet of the upper container is securely received and placed on the outer peripheral load receiving portion (the taper mounting portion of the pallet receiving frame portion) of the cap of the lower container, and the load of the upper container is passed through the outer peripheral load receiving portion. It is received by the sleeve of the lower container.

Further, since the upward protruding height of the bulging portion of the cap is formed lower than the height of the upper side portion of the outer peripheral frame portion of the outer peripheral load receiving portion, when the upper container is stacked on the lower container, the upper step Before the bottom surface of the container pallet hits the bulging portion of the cap of the lower container, the lower surface side of the pallet of the upper container is inserted into the upper edge opening edge of the sleeve of the lower container, and inside the outer frame of the cap Can be guided to drop.
Thereby, the stacking operation can be quickly performed.

  Further, in the present invention, the cap includes a plurality of restoring projections that are formed in a substantially square shape in plan view and protrude upward in the two directions of the outer periphery facing each other across the bulging portion. It is characterized by that.

According to such a configuration, as described above, the bulging portion of the cap of the lower container is bent downwardly projecting due to the load of the upper container, and there is a possibility that the bent state may be lost by continuing for a long time. A reduction in the elastic restoring force of a certain bulging portion can be prevented by the restoring convex portion.
Thereby, the elastic restoring force to the upward projecting shape of the bulging portion can be maintained and promoted for a long time. In other words, the load receiving function for receiving the load of the upper container only at the outer periphery load receiving portion and receiving the load on the sleeve of the lower container can be continued in the cap for a long period of time.

Since the container of the present invention is configured as described above, the load of the upper container is received only by the outer peripheral load receiving portion (outer peripheral portion) of the cap of the lower container, and the load is received by the sleeve of the lower container. Therefore, the cap can be simplified and lightened, and the production cost can be reduced.
In other words, unlike the conventional product, it is not necessary to provide load-bearing strength to the entire cap by providing reinforcing ribs, etc., so that the cap is simplified, lighter, and material costs and mold production costs etc. We can expect a reduction in production costs due to the reduction.
Moreover, by reducing the weight of the cap, it is possible to expect an effect that the cap is easy to handle in assembling or disassembling the container A.

Further, in the present invention, when the upper container is placed on the cap of the lower container, the upward projecting bulging portion of the cap is bent so as to rebound downward by the load of the upper container, The taper mounting portion of the cap on which the taper engaging portion of the pallet of the upper container is mounted is moved toward the inside of the sleeve.
Thereby, for example, a dimensional error (molding error) at the time of molding peculiar to a resin material occurs in a cap or pallet formed by hot cold molding or the like. In particular, even when a dimensional error such as an inclination angle of the taper mounting portion on the cap side or the taper engaging portion on the pallet side occurs, the dimensional error is caused by the taper mounting portion of the pallet receiving frame portion of the sleeve. Since it is corrected by the inwardly drawn movement, the taper engaging portion of the pallet on the upper container side can be reliably received and placed on the taper mounting portion of the cap on the lower container side.
That is, a plurality of containers can be stacked in a state where the load of the upper container is reliably received by the outer peripheral load receiving portion (outer peripheral portion) of the cap on the lower container side.

  Further, in the present invention, when a plurality of containers are stacked, there is a possibility that the downward projecting state of the bulging portion that bends downwardly projecting due to the load of the upper container may be lost by continuing for a long time. Since the restoration convex part for preventing the stress loss with time (change with time) peculiar to the resin is provided, the elastic restoring force of the bulging part can be maintained for a long time.

[Description of Configuration of First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a longitudinal sectional view showing an assembled state of the container according to the first embodiment, and FIG. 2 is a perspective view showing an exploded state of the container.

<< Container structure >>
As shown in FIGS. 1 and 2, the container A is erected in a surrounding shape by detachably inserting the pallet 1 and the lower end opening edge 2 a side along the inside of the outer peripheral edge of the pallet 1. A square is formed by three members: a sleeve 2 and a cap 3 that detachably inserts the inner side of an outer peripheral frame portion 10 of the outer peripheral load receiving portion 9 described later into the upper end opening edge 2b side of the sleeve 2 and closes the upper end opening of the sleeve 2. It is assembled in a box shape and can be disassembled.

≪Pallet composition≫
The pallet 1 is formed in a substantially square shape in plan view having an appropriate size by hot cold molding (deep drawing press molding) using a thermoplastic resin material or other synthetic resin materials.
As shown in FIGS. 1 and 2, the pallet 1 is provided with a sleeve mounting portion 4 for inserting and mounting the lower end opening edge 2a of the sleeve 2 on the inner side along each outer peripheral edge. Three leg portions 5 are respectively provided in parallel with upward openings.
Thus, the lower end opening edge 2a of the sleeve 2 can be assembled to the sleeve mounting portion 4 in a separable manner. Further, when the container A is moved to another place or stacked, the fork claw insertion space 6 for inserting the fork claw of the forklift or the handlift has two sides and a center on the lower surface as shown in FIG. These are secured between the three legs 5.

The pallet 1 has a long side leg wall and a short side leg wall of the leg part 5 extending from the bottom projecting base of the three leg parts 5 to the bottom of the leg, as shown in FIG. 1 and FIG. It is formed in an inwardly inclined shape that is inclined toward the inner side of the leg portion 5 at an appropriate inclination angle. That is, the three legs 5 are each formed in a substantially trapezoidal shape that is downward (reverse) in a longitudinal sectional view, as shown in FIG. 7 of a second embodiment described later.
Thereby, nesting of a large number of pallets 1 is possible in a state in which the vertical stacking height of the pallets 1 is considerably thinner than the height (thickness) of the pallet 1, and the outer surface of the leg portion 5 on the leg bottom side. Is formed as a taper engaging portion 7 for being placed so as to drop into the taper placement portion 13a along the taper of the taper placement portion 13a described later of the cap 3.

Further, as shown in FIG. 2, the pallet 1 is continuously formed in a substantially zigzag shape or a substantially wavy shape on the long side leg walls of the three leg portions 5 at substantially equal intervals in the longitudinal direction of the leg portions 5. It is provided with a raised concave portion 8 that has been made to move.
Thereby, the rigidity with respect to bending deformations, such as bending, is provided to the three legs 5, and as shown in FIG. 4 to be described later, the load (weight) of the upper container A2 when the containers A are stacked, The lower pallet 1 is prevented from being deformed by the load of the upper pallet 1... Group when stacked in a nesting state. The pallet 1 is transported (returned) and stored in a nesting state of several tens of sheets.

Further, as shown in FIGS. 1 and 2, the pallet 1 is provided with leg receiving portions 9 at several places at appropriate intervals in the longitudinal direction of the inner bottom portions of the three leg portions 5.
Thereby, when the pallet 1 is overlapped in the nesting state, the leg bottom of the leg part 5 of the upper pallet 1 is not completely fitted so that the leg parts 5 of the pallet 1 that are stacked one above the other so as to fit together inside and outside are not fitted together. Is received by the leg receiving portion 9 of the lower pallet 1. That is, when assembling the container A, a large number of pallets 1 stacked in a nesting state can be quickly and sequentially separated from the upper side.

≪Configuration of sleeve≫
As shown in FIGS. 1 and 2, the sleeve 2 can be placed along the sleeve placement portions 4 on the peripheral edges of the pallet 1 using a relatively light paper or plastic cardboard material. It is large and is formed in a substantially square cylindrical shape in plan view having an appropriate height.

  Although not shown in the drawings, among the four sides of the cylindrical wall that connects the sleeve 2 at a right angle, an appropriate folding line extending in the vertical direction is provided at the center of at least the opposite two cylindrical walls. When not in use, a plurality of sleeves can be stacked and stored in a folded state in a flat plate shape.

≪Cap configuration≫
FIG. 3 is a plan view and an enlarged sectional view showing the cap. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The cap 3 is formed in a substantially square shape in a plan view having substantially the same size as the pallet 1 by hot cold molding using a thermoplastic resin material or other synthetic resin material, like the pallet 1.
As shown in FIGS. 1 and 2, the cap 3 has a bulging portion 10 that is slightly smaller than the opening area of the sleeve 2 and is elastically deformable up and down, and around the bulging portion 10. Is formed integrally with an outer peripheral load receiving portion 11 that is inserted into and engaged with the upper end opening edge portion 2 b of the sleeve 2.

≪Configuration of outer periphery receiving part≫
The outer peripheral load receiving portion 11 has a role of inserting and locking the cap 3 in the upper end opening edge 2b of the opening so as to close the upper surface opening of the sleeve 2, and a container A stacked in a stack as shown in FIG. When receiving the load, the load (weight) of the upper container A2 is received, and the load is received by the sleeve 2 of the lower container A1.
As shown in FIG. 1, the outer periphery load receiving portion 11 includes an outer peripheral frame portion 12 that extends from the upper end surface of the upper end opening edge 2 b of the sleeve 2 along the outer peripheral surface, and a bulge from the outer peripheral frame portion 12. The pallet receiving frame portion 13 is formed so as to be recessed toward the inside of the sleeve 2 together with the portion 9.

  As shown in FIG. 1, the outer peripheral frame portion 12 has an upper side portion 12a placed on the upper end surface of the upper end opening edge portion 2b when inserted into the upper end opening edge portion 2b of the sleeve 2, and an outer peripheral surface thereof. The outer peripheral part 12b addressed along is formed in a substantially reverse L-shape in a longitudinal sectional view having a predetermined thickness. The thickness of the upper side portion 12a and the outer peripheral portion 12b is preferably in the range of 2 to 8 mm.

  As shown in FIGS. 1 and 3, the pallet receiving frame portion 13 is a taper mounting portion that is connected in a downward inclined manner from the inner edge of the upper side portion 12 a of the outer peripheral frame portion 12 toward the inside of the sleeve 2. 13a and a horizontal connecting portion 13b provided in a continuous manner inwardly from the inclined lower end of the taper mounting portion 13a toward the inner side of the sleeve 2, substantially in a lateral direction L in a longitudinal sectional view having a predetermined thickness. It is formed in a letter shape. The thickness of this taper mounting part 13a and the horizontal connecting part 13b is preferably within a range of 5 to 12 mm.

  As shown in FIG. 1B and FIG. 3B, the taper mounting portion 13a has an opening between the outer peripheral portion 12b of the outer peripheral frame portion 12 that is equal to or wider than the cylindrical wall thickness of the sleeve 2. At an appropriate inclination angle from the upper side portion 12a of the outer peripheral frame portion 12 toward the inner side of the sleeve 2 so as to form a sleeve edge engaging portion 15 that opens in a width and gradually expands downward. It is connected continuously.

  As shown in FIG. 1, the waterside connecting portion 13b is connected substantially horizontally with an appropriate dimension from the inclined lower end of the taper mounting portion 13a toward the inside of the center portion of the sleeve 2, so that the pallet A is provided. A recess into which the legs 5 of the pallet 1 are dropped when stacked is formed inside the outer frame 12 at an appropriate depth from the upper side 12a of the outer frame 12 and horizontally inward. The bulging portion 10 is formed so as to be continuously projected upward from the end portion.

≪Configuration of bulge part≫
As shown in FIG. 3B, the bulging portion 10 has an upward protruding height that is lower than a height L from the horizontal continuous portion 13b where the bulging base end is continuous to the upper side portion 12a of the outer peripheral frame portion 12. It is formed in a substantially drum shape (substantially bowed shape) at the length L1. The thickness of the bulging portion 10 is preferably within a range of 0.1 to 4 mm.
Thereby, as shown in FIG. 4, when the pallet 1 of the upper container A2 is placed on the cap 3 of the lower container A1, the bulging portion 10 is lowered from the upward protruding state by the load of the upper container A2. The pallet receiving frame portion 13 (taper mounting portion 13a) is pulled toward the inside of the sleeve 2 as shown in FIG. When is removed, it is formed so as to elastically return to the original upward projecting state.

[Description of Operation of First Embodiment]
Next, the pallet A according to the first embodiment including the cap 3 formed as described above will be briefly described.
FIG. 4 is a longitudinal sectional view showing a state when containers are stacked in layers, and FIG. 5 is an enlarged cross-sectional view showing a part of the stacked state in containers. Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
First, the container A is assembled from the disassembled state shown in FIG. 2 by inserting the lower end opening edge 2a of the sleeve 2 into the sleeve mounting portion 4 formed inside each outer peripheral edge of the pallet 1. Then, the sleeve 2 is erected on the pallet 1 in a surrounding shape. Then, the sleeve edge engaging portion 15 of the cap 3 is inserted and engaged with the upper end opening edge 2b of the sleeve 2 from above, and the upper surface opening of the sleeve 2 is closed with the cap 3, as shown in FIG. Container A is assembled.

  Then, as shown in FIG. 4, when the containers A that are assembled in this manner and in which products, materials, and other distribution items (not shown) are stored are stacked, they are placed on the lower container A1. A fork claw is inserted into the fork claw insertion space 6 of the pallet 1 of the container A2, the upper container A2 is lifted and moved directly above the lower container A1, and from this state, the legs 5 of the pallet 1 of the upper container A are moved to the lower container. The upper container A2 is gradually lowered while positioning (positioning) so as to be dropped between the outer peripheral frame portions 12 (inside the recesses) of the outer peripheral load receiving portion 11 of the cap 3 of A1.

The upper container A2 is lowered onto the cap 3 of the lower container A1, and the leg 5 of the pallet 1 of the upper container A2, in particular, the bottom of the leg 5 at the center of the lower surface is the bulge 10 of the cap 3 of the lower container A1. When the load of the upper container A2 starts to be applied to the bulging portion 10 upon hitting the bulging protrusion end surface, the bulging portion 10 is moved inward of the sleeve 2 by the load of the upper container A2 as shown in FIG. It is pushed down and deformed (downward).
And the pressing-down deformation of the bulging part 10 is continued to the lower region part beyond the bulging base end (dead point) connected to the horizontal connecting part 13b of the outer periphery load receiving part 11 (pallet receiving frame part 13). Then, as shown in FIG. 4 and FIG. 5B, the bulging portion 10 bends so as to bounce back downward. At this time, as shown in FIG. 5A, the pallet receiving frame portion 13 of the outer periphery load receiving portion 11 is once pushed toward the inner surface direction (arrow X direction) of the cap 3 and the bulging portion 10 is moved. At the same time as bending downward, it is drawn toward the inside of the sleeve 3 (arrow Y direction) as shown in FIG.
Thereby, the taper engaging part 7 of the pallet 1 (leg part 5) of the upper container A2 is mounted on the taper of the pallet receiving frame part 13 of the cap 3 of the lower container A1 as shown in FIG. The load on the upper container A2 is received and placed on the portion 13a without fail, and the load on the upper container A2 is received by the outer periphery load receiving portion 11 of the cap 3, and is received by the sleeve 2 of the lower container A1 through the outer periphery load receiving portion 11.

Thus, according to the container A according to the first embodiment, as shown in FIG. 4, when stacked in a plurality of stages, the load of the upper container A2 is only the outer peripheral load receiving portion 11 of the cap 2 of the lower container A1. In order to be received by the sleeve 2 of the lower container A1 through the outer peripheral load receiving portion 11, the load of the upper container A2 is received by the entire cap of the lower container A1 and is received by the sleeve 2 of the lower container A2. Compared with the conventional product formed in the above, the cap 3 structure can be simplified and the weight can be reduced by eliminating the necessity of providing a reinforcing rib or the like.
As a result, it is possible to expect a reduction in production cost due to a reduction in material costs of the synthetic resin material for forming the cap 3 and die production costs accompanying simplification of the mold structure. In addition, the cap 3 is expected to have a remarkable effect such as being easy to handle the cap 3 when assembling the container A, when disassembling the container A, etc., as much as it has become lighter due to the material reduction. Can do.

[Description of Configuration of Second Embodiment]
A second embodiment of the present invention will be described with reference to FIGS. 6 and 7 as appropriate.
FIG. 6 shows a cap of a container according to the second embodiment, and FIG. 7 is a longitudinal sectional view showing a state when the container is stacked in layers.
As shown in FIG. 6, the container A-1 according to the second embodiment is basically the same as the first embodiment except for the configuration of the cap 3-1. The same components are denoted by the same reference numerals, and redundant description is omitted.
That is, as shown in FIG. 6, the cap 3-1 is protruded upward so as to be parallel to the other two outer peripheral sides facing the outer peripheral two sides facing each other across the bulging portion 10. A plurality of restoration convex portions 14 are provided.

≪Configuration of restoration convex part≫
The restoration convex part 14 maintains the elastic restoring force of the bulging part 10. That is, as shown in FIG. 7, the stress loss with time (change with time) peculiar to synthetic resin that may be lost by continuing the state of being bent downward and protruding due to the load of the upper container A2-1 for a long time. This prevents the elastic restoring force of the bulging portion 10 and promotes the elastic restoring force.

This restoration convex part 14 is provided integrally when the cap 3-1 is hot-cold-molded, and straddles the bulging part 10 as shown in FIG. It is formed in a substantially downward U-shape in a longitudinal sectional view at an appropriate height and opening width so as to cover the horizontal continuous portion 13b of the receiving frame portion 13.
And as shown to (b) and (d) of this FIG. 6, this restorer convex part 14 is formed in the thickness which is the same thickness as the bulging part 10 in the part which straddles the bulging part 10. FIG. Further, as shown in FIG. 7, when the upper container A2-1 is stacked on the lower container A1-1, there is a parallel interval where the three legs 5 of the pallet 1 of the upper container A2 do not hit. Is formed.

  As shown in FIG. 7, the cap 3-1 formed in this way is incorporated into the upper surface opening of the sleeve 2 so that the protruding direction of the restoring convex portion 14 matches the protruding direction of the leg portion 5 of the pallet 1.

[Explanation of second embodiment]
According to container A-1 which concerns on 2nd Embodiment provided with the cap 3-1 formed as mentioned above, as shown in FIG. Similar to the embodiment, the bulging portion 10 of the cap 3-1 is bent so as to bounce downward in a protruding manner due to the load of the upper container A2-1.
Thereby, the taper engaging part 7 of the pallet 1 (leg part 5) of the upper container A2-1 is securely attached to the taper mounting part 13a of the pallet receiving frame part 13 of the cap 3-1 of the lower container A1-1. The load placed on the upper container A2-1 is received by the outer peripheral load receiving portion 11 provided along the outer periphery of the cap 3-1, and the lower container A1-1 is passed through the outer peripheral load receiving portion 11. The sleeve 2 is received.

In addition, the cap 3-1 includes a plurality of restoration convex portions 14 that protrude upward in the two outer peripheral directions facing across the bulging portion 10, as shown in FIG. Loss of stress over time of the bulging portion 10 that may be lost when the containers A-1 are stacked and the downward projecting state of the bulging portion 10 of the cap 3-1 of the lower container A1-1 is continued for a long time. This suppresses the decrease in the elastic restoring force that accompanies, thereby speeding up the elastic return of the bulging portion 10 from the downward projecting shape to the upward projecting shape, and maintaining and promoting the elastic restoring force over a long period.
Thereby, the load receiving function of receiving the load of the upper container A2-1 on the sleeve 2 of the lower container A1-1 via the outer peripheral load receiving portion 11 of the cap 3-1 can be continued in the cap 3-1. In other words, the cap 3-1 maintains the load receiving function of the upper container A2-1 by only the outer peripheral load receiving portion 11 obtained by bending the bulging portion 10 downward by the load of the upper container A2-1 over a long period of time. be able to.

In addition, the restoration convex portion 14 confirms the direction when the fork claws are inserted into the fork claw insertion space 6 of the pallet 1 of the upper container A2-1 placed on the floor when the containers A-1 are stacked. It can be used (utilized) as a landmark. In other words, the forklift operator can confirm at a glance the insertion direction of the fork claw into the fork claw insertion space 6 of the pallet 1 that is difficult to see when placed on the floor, with the protruding direction of the restoring projection 14 as a mark. it can.
As a result, the operator of the forklift can quickly perform the stacking operation of the containers A-1 without mistaken insertion direction of the fork claws into the fork claw insertion space 6.

Further, the restoration convex portion 14 can be used as a mark for placing the upper container A2-2 in the same direction as the lower container A1-1 when the containers A-1 are stacked.
For example, the pallet 1, the sleeve 2, the cap 3-1, and the like formed in a substantially rectangular shape in plan view in which the length of one opposite outer circumference and the other opposite two circumferences are slightly different When the pallet 1 of the upper container A2-1 is placed on the cap 3-1 of the lower container A1-1, the container A-1 is assembled and placed on the cap 3-1 of the lower container A1-1. Using the protruding direction of the restoration convex portion 14 provided as a mark, the operator of the forklift can place the upper container A2-1 on the lower container A1-1 without making a mistake with the same direction as the direction of the lower container A1-1. Can be stacked.
In this case, the leg part 5 and the restoration convex part 14 are respectively provided toward both long side directions of the pallet 1 and the cap 3-1.
Thereby, the restoration convex part 14 of the cap 3-1 is effective as a mark for promptly performing the stacking operation of the container A-1, and is used particularly as an effective mark for an inexperienced operator. Can do.

The specific configuration of the embodiment of the present invention is not limited to each of the above-described embodiments, and there are design changes and the like without departing from the gist of the present invention described in claims 1 to 4. However, it is included in the present invention.
For example, among the four sides of the caps 3 and 3-1, the downward opening width of the sleeve edge engaging portion 15 on the opposite two sides is set to a thickness corresponding to one cylindrical wall thickness of the sleeve 2, as described above. On the other hand, the downward opening width of the sleeve edge engaging portion 15 on the other two sides facing each other is set as the opening width corresponding to the thickness of the two cylinder wall thicknesses. be able to.
That is, in the cap 3-1 shown in FIG. 6, the downward opening width of the sleeve edge engaging portion 15 on both sides in the enlarged cross-sectional view shown by the line bb is set to the thickness of one tube wall thickness. Corresponding opening width, the downward opening width of the sleeve edge engaging portion 15 on the two sides on both sides in the enlarged sectional view shown by the cc line and the dd line corresponds to the thickness of the two cylinder wall thicknesses. The opening width can be made.
Thereby, containers A and A-1 can be assembled and configured using a pair of split sleeves formed in a substantially U shape in plan view.

  Further, the containers A and A-1 are not limited to a substantially square or a substantially rectangular shape in a plan view, but can be assembled and configured in a polygonal box shape such as a circle or a regular hexagon. That is, the pallet 1, the sleeve 2, and the caps 3 and 3-1 can be formed in a polygonal shape such as a circle or a regular hexagon in plan view.

  Further, the caps 3 and 3-1 can be formed as a form in which the bulging base end of the bulging portion 10 is directly connected to the inclined lower end of the taper mounting portion 13a of the pallet receiving frame portion 13.

It is a longitudinal cross-sectional view which shows the assembly state of the container which concerns on 1st Embodiment. It is a perspective view which decomposes | disassembles and shows the same container. The cap of the same container is shown, (a) is a top view, (b) is the bb line expanded vertical sectional view of (a). It is a longitudinal cross-sectional view which shows the state which stacked the same container. A part of the same stacked state is shown, (a) is an enlarged cross-sectional view showing just before the bulging portion of the cap bounces downwardly beyond the dead point, (b) is a bulging of the cap It is an expanded sectional view showing the state where the part bounced back downward. The cap of the container which concerns on 2nd Embodiment is shown, (a) is a top view, (b) is the bb line enlarged vertical sectional view of (a), (c) is (a ) Is an enlarged longitudinal sectional view taken along the line cc of FIG. 4D, and FIG. 5D is an enlarged longitudinal sectional view taken along the line dd of FIG. It is a longitudinal cross-sectional view which shows the state which stacked the container which concerns on the said 2nd Embodiment.

Explanation of symbols

A, A-1 container A1, A1-1 Lower container A2, A2-1 Upper container 1 Pallet 2 Sleeve 2a Lower end opening edge 2b Upper end opening edge 3,3-1 Cap 4 Sleeve placement part 5 Leg part 6 Fork Claw insertion space 7 Taper engaging part 10 Swelling part 11 Outer peripheral load receiving part 12 Outer peripheral frame part 12a Upper side part 12b Outer peripheral part 13 Pallet receiving frame part 13a Taper mounting part 13b Horizontal connecting part 14 Restoring convex part 15 Sleeve edge Joint

Claims (4)

A palette,
A sleeve that is erected in an enclosed shape by inserting a lower end opening edge inside the outer peripheral edge of the pallet;
A container that is configured to be assembled and disassembled from a cap that closes the upper end opening of the sleeve by inserting the inside of the outer peripheral edge into the upper end opening edge of the sleeve, and can be stacked in multiple stages in the assembled state. There,
The pallet includes an inwardly inclined tapered engagement portion along an outer periphery of a lower surface placed so as to be dropped into the cap,
The cap is slightly smaller than the opening area of the sleeve, and a bulging portion formed to be elastically deformable up and down,
Consecutively formed around the bulging portion, and formed integrally with an outer peripheral load receiving portion that is inserted and engaged with the upper end opening edge of the sleeve from above,
The outer periphery load receiving portion is formed in a substantially reverse L-shape in a longitudinal sectional view from the upper end surface of the upper end opening edge portion of the sleeve along the outer peripheral surface;
A pallet receiving frame portion continuously provided so as to be recessed toward the inside of the sleeve together with the bulging portion from the outer peripheral frame portion,
The pallet receiving frame portion is continuously provided so as to be inclined downward at least from the upper side portion of the outer peripheral frame portion toward the inside of the sleeve, and is placed so that the taper engaging portion of the pallet is dropped. A taper mounting portion
The bulging portion is formed in a substantially drum-like shape with an upward protruding shape having a predetermined height from the inclined lower end of the taper mounting portion of the pallet receiving frame portion, and an upper stage on the cap of the lower container When the pallet of a container is placed, the pallet receiving frame part provided with the taper mounting part is bent inwardly by bending so as to bounce downward from the upward protruding state by the load of the upper container, The container is formed so as to elastically return to the upward projecting shape when the load of the upper container is removed. The pallet receiving frame portion, the taper mounting portion,
A horizontal continuous arrangement in which the lower end of the taper mounting portion is connected substantially horizontally toward the inner side of the sleeve, and the horizontal inward end portion is connected to the bulging base end of the bulging portion. The container according to claim 1, wherein the container is formed in a substantially horizontal L shape in a longitudinal sectional view.   3. The container according to claim 1, wherein an upward protruding height of the bulging portion is formed to be lower than a height of an upper side portion of the outer peripheral frame portion.   The cap is formed in a substantially square shape in a plan view, and includes a plurality of restoring convex portions projecting upward in the two outer peripheral sides facing each other across the bulging portion. The container according to claim 1.

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