JPH08318939A - Foldable container - Google Patents

Abstract

PURPOSE: To surely keep a built up state by engaging an end surface plate so that it may not fall inward under the built up state. CONSTITUTION: A pair of side surface plates 2 and a pair of end surface plates 3 are arranged on the four edges of a rectangular bottom plate. At the same time, the lower ends of the pair of side surface plates 2 and the pair of end surface plates 3 are rotatably connected to the bottom plate to make the pair of side surface plates 2 and the pair of end surface plates 3 freely be stood or laid for a foldable container A. An engaging piece is provided inward from an end wall part 4 which is provided so as to be orthogonal with the side surface plate 2, at the end in the longitudinal direction of the side surface plate 2, in such a manner that the engaging piece may become in parallel with the side surface plate 2. At the same time, an engaging recessed part 6 is provided from the external surface of the side end part of the end surface plate 3 in such a manner that the engaging recessed part 6 may become in parallel with the engaging piece, and the engaging piece and the engaging recessed part 6 are detachably engaged under a state wherein the side surface plate 2 and the end surface plate 3 are vertically stood. Under the state wherein the side surface plate 2 and the end surface plate 3 are vertically stood, an engaging protuberance 7 at the end of the side surface plate 2 is engaged with a protuberance 8 to be engaged on the end surface plate 3 in such a manner that the protuberance 8 to be engaged may be located on the outside of the engaging protuberance 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a foldable container in which a pair of side plates and a pair of end plates are erected up and down on four sides of a bottom plate.

[0002]

2. Description of the Related Art Conventionally, a folding container of this type is disclosed in, for example, Japanese Utility Model Publication No. 49-47320. This is to arrange a pair of side plates and a pair of end plates on the four circumferences of a rectangular bottom plate, and to rotatably connect the lower ends of the pair of side plates and a pair of end plates to the bottom plate to form a pair of side plates and a pair of ends. The face plate is formed so as to be erected, and the pair of end face plates are stacked on the bottom plate, and the pair of side face plates are folded so as to be stacked on the bottom plate through the end face plates.
By assembling the pair of side plates vertically and then vertically setting the end plates vertically, an assembled state is obtained, and the end plates are positioned between the longitudinal end portions of the pair of side plates in the assembled state. Then, with the side plate and the end plate standing vertically, engage the engaging piece at the end of the side plate in the longitudinal direction with the engaging hole at the end of the end plate, and The side plate and end plate are connected so that they do not open.

[0003]

In such a conventional example, the side plate and the end plate are formed by engaging the engaging piece and the engaging hole in an assembled state in which the side plate and the end plate are vertically erected. It is possible to connect the side plate and the end face so that it does not open to the outside, but there is nothing to prevent the end face plate from falling inward when a force is applied to the end face plate inwardly, and the end face plate is There is a problem that it cannot fall down and maintain the assembled state.

The present invention has been made in view of the above problems, and an object of the present invention is to securely maintain the assembled state by locking the end face plate so as not to fall inward in the assembled state. To provide a folding container that can.

[0005]

In order to achieve the above object, the folding container A of the present invention has a pair of side plates 2 and a pair of side plates 2 arranged on the four circumferences of a rectangular bottom plate 1. And the lower ends of the pair of end face plates 3 are rotatably connected to the bottom plate 1 so that the pair of side face plates 2 and the pair of end face plates 3 can be erected up and down, and the pair of end face plates 3 are stacked on the bottom plate 1 and the pair of sides. The face plate 2 is folded so as to be stacked on the bottom plate 1 via the end face plate 3, and the pair of side face plates 2 are vertically erected and then the end face plates 3 are vertically erected to be in an assembled state and in an assembled state. In the one in which the end face plate 3 is positioned between the end portions in the longitudinal direction of the pair of side face plates 2,
An end piece 4 is provided at the end of the side surface plate 2 in the longitudinal direction so as to be orthogonal to the side surface plate 2, and an engaging piece 5 is projected inward from the end wall portion 4 so as to be parallel to the side surface plate 2. The engaging recess 6 is provided so as to be parallel to the engaging piece 5 from the outer surface of the side end of 3.
With the side plate 2 and the end face plate 3 standing vertically, the engaging piece 5 and the engagement recess 6 are engaged with each other in a disengageable manner, and the side plate 2 and the end face plate 3 stand vertically. The locking projection 7 at the end of the face plate 2 and the locked projection 8 of the end plate 3 are locked so that the locked projection 8 is located outside the locking projection 7. .

Further, in order to prevent the end face plate 3 from rotating in the direction in which the end face plate 3 is vertically erected so as not to rotate in the direction in which it overlaps with the bottom plate 1, a lower locking means is provided between the lower end of the end face plate 3 and the bottom plate 1. It is also preferable that it is provided.

[0007]

According to the above structure, the end wall portion 4 provided at the longitudinal end portion of the side surface plate 2 so as to be orthogonal to the side surface plate 2 is engaged inwardly in parallel with the side surface plate 2. Engagement recesses 6 are provided so as to project from the outer side surface of the end face plate 3 and to be parallel to the engaging pieces 5, and the side plate 2 and the end face plate 3 are vertically erected. By engaging the engagement piece 5 and the engagement recess 6 in a disengageable manner, the engagement piece 5 and the engagement recess 6 in the assembled state in which the side plate 2 and the end face plate 3 are vertically erected. The side plate 2 and the end plate 3 can be prevented from opening outward by the engagement. Moreover, with the side plate 2 and the end plate 3 standing upright, the locking projections 7 at the ends of the side plate 2 and the locked projections 8 of the end plate 3 are placed outside the locking projections 7. Since the side plate 2 and the end plate 3 are vertically erected in the assembled state, the locked projection 8 is locked by the locking projection 7.
It is possible to prevent the end face plate 3 from falling inwardly by being locked to, and the assembled state can be reliably maintained.

Further, in order to prevent the end plate 3 from rotating in the direction in which the end plate 3 is vertically erected so as not to rotate in the direction in which the end plate 3 overlaps with the bottom plate 1, a lower locking means is provided between the lower end of the end plate 3 and the bottom plate 1. If provided, the lower end of the end face plate 3 can also be locked to the bottom plate 1 in a state where the end face plate 3 is vertically erected to further prevent the end face plate 3 from falling inward, so that the assembled state can be more reliably maintained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the case of this embodiment, a folding container A is composed of a bottom plate 1, a pair of side plates 2, a pair of end plates 3 and a lid 10 in this embodiment. The bottom plate 1 is formed in a rectangular shape, a side plate 2 is arranged along a pair of long sides of the bottom plate 1, and an end face plate 3 is arranged along a pair of short sides of the bottom plate 1. Lower portions of the side plate 2 and the end plate 3 are rotatably connected to the bottom plate 1, and the side plate 2 and the end plate 3 are rotatably connected.
Can be tilted freely. When the lower portions of the side plate 2 and the end plate 3 are rotatably connected to the bottom plate 1, the side plate 2 and the end plate 3
A plurality of pivot shafts 11 are horizontally provided in the lower part of the
1 is fitted in the bearing recess 12 of the bottom plate 1. The height position at which the lower portion of the side plate 2 is rotatably connected to the bottom plate 1 is higher than the height position at which the lower portion of the end plate 3 is rotatably connected to the bottom plate 1. The side plates 2 are folded on the bottom plate 1 via the end plates 3 after the end plates 3 are folded so as to overlap each other. That is, the bottom plate 1
A rising edge 13 is provided on the peripheral edge of the end plate 3, and the end face plate 3 is attached by fitting the pivot shaft 11 into a bearing recess 12 provided on the inner surface side of the rising edge 13, and the side plate 3 is attached to the pivot shaft 1
1 is fitted and attached to a bearing recess 12 provided on the upper surface of the rising edge 13. When the end plate 3 is raised from the side of the bottom plate 1 and stands upright, the lower projecting piece 14 of the end plate 3 hits the upper end of the rising edge 13 and is prevented from rotating further outward. Further, when the side plate 2 is raised from the bottom plate 1 side and stands upright, the lower end surface of the side plate 2 contacts the upper surface of the rising edge 13 and is prevented from rotating further outward. Handles 15 are provided on the outer surfaces of the side plate 2 and the end plate 3 as required. Further, the lid 10 can be attached to the upper surface of the bottom plate 1 in an assembled state in which the side plate 2 and the end plate 3 are vertically set.

Further, as shown in FIGS. 1 and 2, an end wall portion 4 orthogonal to the side surface plate 2 is integrally provided at an end portion in the longitudinal direction of the side surface plate 2, and the side surface plate 2 and the end face plate 3 are perpendicular to each other. The end face plate 3 can be positioned between the end wall portions 4 of the pair of side face plates 2 in the state of standing upright. An engagement piece 5 is provided so as to project from the tip of the end wall portion 4 of the side surface plate 2 in parallel with the side surface plate 2. The engaging pieces 5 are not continuous in the vertical direction, and a plurality of engaging pieces 5 are provided in the vertical direction at appropriate intervals. Engagement recesses 6 are provided in the side end portions of the end face plate 3 so as to be parallel to the engagement pieces 5 from the outer surface of the end face plate 2. When the side plate 2 and the end plate 3 are vertically erected, the engagement piece 5 engages with the engagement recess 6. A projecting piece 16 is provided in front of the tip of the end wall 4 of the side plate 2 so as to be parallel to the engaging piece 5. The protruding piece portion 16 is provided only at the upper position of the end wall portion 4, and the protruding wall 17 is protruded from the side surface plate 2 so as to be parallel to the end wall portion 4 in a portion other than the upper portion where the protruding piece portion 16 is present. It is set up. A locking projection 7 is provided at the tip of the projecting piece 16, and a locked projection 8 is provided at the side end of the end plate 3.

The folding container A constructed in this way
7 is folded as shown in FIG. 7B by stacking the end plate 3 on the bottom plate 1 and stacking the side plate 2 on the bottom plate 1 via the end plate 3. In this folded state, as shown in FIG. 9A, a plurality of sheets can be stacked vertically. The lid 10 can also be stacked as shown in FIG. 9 (b). Also, the side plate 2 is set upright with respect to the bottom plate 1 first,
Then, the end face plate 3 is erected vertically to obtain an assembled state as shown in FIG. The end surface plate 3 stands between the end wall portions 4 of the side surface plate 2 in a state where the side surface plate 2 and the end surface plate 3 are vertically erected, and the engagement piece 5 engages with the engagement recess 6. This engagement can prevent the side plate 2 and the end plate 3 from opening in the directions of arrows a and b in FIG. Further, when the engaging piece 5 and the engaging recess 6 are engaged, the locked projection 8 exceeds the locking projection 7 and the locking projection 7
The locked projection 8 is locked to the end face plate 3 of FIG. 2 (a) (b).
It can be prevented from falling in the direction of arrow c and the assembled state can be reliably maintained. In this manner, the folding container A can be assembled and the contents can be stored inside, and the lid 10 can be attached to the upper opening. As shown in FIG. 8, a plurality of folding containers A assembled and covered with the lid 10 can be stacked vertically.

FIGS. 10, 11 and 12 show an embodiment adopting a structure in which the lower end of the end plate 3 is locked to the bottom plate 1 when the end plate 3 is erected vertically. In the case of the embodiment of FIG.
An engaging step portion 20 is provided at the lower end of the end face plate 3, an engaging recess 21 is provided in the bottom plate 1, and the end face plate 3 is vertically changed from the state of FIG. 10 (b) to that of FIG. 10 (a). The locking step portion 20 is locked in the locking concave portion 21 when standing up. In the case of the embodiment shown in FIG. 11, a locking step portion 20 is provided on the lower end of the end plate 3, a locking projection 22 is provided on the bottom plate 1, and the end plate 3 is viewed from the state of FIG. As shown in FIG. 11 (a), the locking step portion 20 is locked to the locking projection 22 when it is vertically stood. In the case of the embodiment shown in FIG. 12, an engaging surface 23 is provided at the lower end of the end face plate 3, and the end face plate 3 is shown in FIG.
The engagement surface 23 engages with and locks the upper surface of the bottom plate 1 when standing vertically from the state of (b) as shown in FIG. 12 (a). In this way, when the lower end of the end face plate 3 is locked when the end face plate 3 is vertically erected, the end face plate 3
Can be more reliably prevented from falling inward.

[0013]

As described above, according to the present invention, an engaging piece is formed so as to be inward from the end wall portion provided at the longitudinal end portion of the side surface plate so as to be orthogonal to the side surface plate and parallel to the side surface plate. And the engaging recess is provided so as to be parallel to the engaging piece from the outer surface of the side end portion of the end plate, and the engaging piece and the engaging recess in a state where the side plate and the end plate are vertically erected. The side plate and the end plate open outward by the engagement between the engaging piece and the engaging recess in the assembled state in which the side plate and the end plate are erected vertically. In addition, with the side plate and the end plate standing vertically, the locking protrusions on the end of the side plate and the locked protrusions on the end plate should be placed outside the locking protrusions. Since the side plate and the end plate are vertically assembled, the locked projections are locked to the locking protrusions so that the end plate does not move inside. Those which can reliably maintain the assembled state can prevent the fall down.

According to the second aspect of the present invention, the lower locking means is locked so as to lock the end plate so that the end plate does not rotate in the direction in which the end plate overlaps the bottom plate in a state where it is vertically erected. Since it is provided between the lower end of the face plate and the bottom plate, the lower end of the end face plate can also be locked to the bottom plate while the end face plate is standing upright to further prevent the end face plate from falling inward. It can be reliably maintained.

[Brief description of drawings]

FIG. 1 shows an embodiment of a folding container according to the present invention,
(A) is an exploded perspective view of a main part, and (b) is a perspective view of an assembled state.

2A is a perspective view taken along line XX of FIG. 1B, FIG. 2B is a perspective view taken along line YY of FIG.
(C) is a perspective view taken along line ZZ of FIG. 1 (b).

FIG. 3 is a view showing the entire assembled state of the folding container of the above, (a) is a plan view, (b) is a front view, and (c) is a side view.

FIG. 4A is a sectional view seen from the front side of the same, and FIG. 4B is a sectional view seen from the side surface.

5A is a cross-sectional view seen from the front with the lid body removed, and FIG. 5B is a cross-sectional view seen from the side.

6A and 6B show a rotatably connected portion of the same end face plate, FIG. 6A is a sectional view in a state where the end face plate is laid down, and FIG. 6B is a sectional view in a state in which the end face plate is erected vertically.

FIG. 7A is a schematic perspective view of a folded container assembled, and FIG. 7B is a schematic perspective view of the folded container folded.

FIG. 8 is a front view showing a state in which the assembled folding containers of the same are stacked.

FIG. 9 (a) is a front view showing a state where the above-mentioned folded folding containers are stacked, and FIG. 9 (b) is a cross-sectional view showing a state where the above lids are stacked.

FIG. 10 shows a locking means at the lower end of the above end plate,
(A) is sectional drawing in the state which raised the end plate, (b) is sectional drawing in the state which tilted the end plate.

11A and 11B show another example of locking means for the lower end of the same end face plate, FIG. 11A is a sectional view of the end face plate in a standing state, and FIG. 11B is a sectional view of the end face plate in a tilted state.

12A and 12B show another example of locking means for the lower end of the same end face plate, wherein FIG. 12A is a sectional view of the end face plate in a standing state, and FIG. 12B is a sectional view of the end face plate in a tilted state.

[Explanation of symbols]

 A Folding container 1 Bottom plate 2 Side plate 3 End face plate 4 End wall part 5 Engaging piece 6 Engagement recess 7 Engagement protrusion 8 Engagement protrusion

Front page continuation (72) Inventor Hidetoshi Yamaguchi 9-25 Kandacho, Gifu City Gifu Plastic Industry Co., Ltd.

Claims (2)

[Claims] 1. A pair of side surface plates and a pair of end surface plates are arranged around four sides of a rectangular bottom plate, and the pair of side surface plates and the lower ends of the pair of end surface plates are rotatably connected to the bottom plate to form a pair of side surface plates. The pair of end face plates can be tilted up and down, the pair of end face plates can be stacked on the bottom plate, and the pair of side face plates can be folded so as to be stacked on the bottom plate through the end face plates, and the pair of side face plates can be set upright. In the foldable container in which the end plates are placed vertically between the pair of side plates in the assembled state by standing the end plates vertically, and the end plates are positioned between the longitudinal ends of the pair of side plates in the assembled state. An engaging piece projecting inwardly from the end wall portion provided orthogonally to the side surface plate so as to be parallel to the side surface plate, and parallel to the engaging piece from the outer surface of the side end portion of the end face plate. The side surface plate and the end plate are vertical The engaging projection and the engaging recess are engaged with each other so that they can be engaged and disengaged, and the side surface plate and the end face plate are set upright, and the locking projections at the ends of the side face plate and the end face plate are covered. A folding container, characterized in that the locking projection is locked so that the locked projection is located outside the locking projection. 2. A lower locking means is provided between the lower end of the end plate and the bottom plate to lock the end plate so that it does not rotate in the direction in which it overlaps with the bottom plate when the end plate is vertically erected. The folding container according to claim 1, characterized in that: