JP2020117312A - Pallet container - Google Patents

Abstract

To provide a pallet container capable of inhibiting a shaft part of a side plate from being detached from a bottom part in conveying the same in a folded state.SOLUTION: A pallet container 1 includes a bottom part 2 and a plurality of side plates 3 rotatable between standing posture and falling posture. The plurality of side plates 3 include a first side plate 4 and a second side plate 5 which are adjacent to each other in the standing posture. Connection parts 6 disposed on the bottom part 2 include a longitudinal first groove part 60 where a first shaft part 40 of the first side plate 4 is rotatably housed and a longitudinal second groove part 61 where a second shaft part 50 of the second side plate 5 is rotatably housed. When the first side plate 4 is in the falling posture, an upper opening 62 of the first groove part 60 is narrower than the first shaft part 40 viewing from an upper part, and when the second side plate 5 is in the falling posture, a side part opening 63 of the second groove part 61 is narrower than the second shaft part 50 viewing from a side part.SELECTED DRAWING: Figure 1

Description

The present invention relates to pallet containers.

Patent Document 1 describes a prefabricated container that includes a bottom plate, four side plates that are arranged upright on four circumferences of the bottom plate, and L-shaped outer walls in plan view provided at four corners of the bottom plate. ing.

Each of the four side plates can rotate between a state in which they stand up on the bottom plate and a state in which they lie down and stack on the bottom plate by rotating around the shafts protruding from the lower parts of both side ends. Is.

Japanese Patent No. 3294556

By the way, in the assembling type container described in Patent Document 1, there is a possibility that the shaft portion of the side plate may come off from the bottom plate when being conveyed in the folded state.

In view of the above circumstances, it is an object of the present invention to provide a pallet container that can prevent the shaft portion of the side plate from coming off the bottom portion when it is conveyed in a folded state.

The pallet container according to one aspect of the present invention is rotatable between a bottom having a fork insertion portion, an upright posture that stands up to surround a space on the bottom, and a lying posture in which the pallet container lays down on the bottom and is stacked. A plurality of side plates. The plurality of side plates include a first side plate and a second side plate that are adjacent to each other in the standing posture. The bottom portion is provided with a connecting portion that rotatably connects the first shaft portion of the first side plate and the second shaft portion of the second side plate. The connecting portion has a vertically long first groove portion in which the first shaft portion is rotatably accommodated, and a vertically elongated second groove portion in which the second shaft portion is rotatably accommodated. The first groove portion has an upper opening that opens upward, and the second groove portion has a side opening that opens laterally. The first shaft portion has a cross-sectional shape that is horizontally long when the first side plate is in the lying posture, and vertically long when the first side plate is in the standing posture, The second shaft portion has a cross-sectional shape that is vertically long when the second side plate is in the lying posture and horizontally long when the second side plate is in the standing posture. When the first side plate is in the lying posture, the upper opening is narrower than the first shaft portion when viewed from above, and when the second side plate is in the lying posture, from the side. As seen, the side opening is narrower than the second shaft portion.

A pallet container according to another aspect of the present invention has a bottom portion having a fork insertion portion, a standing posture that stands up to surround a space above the bottom portion, and a lying posture in which the bottom portion is laid down and stacked. And a plurality of side plates rotatable between them. The plurality of side plates include a first side plate and a second side plate that are adjacent to each other in the standing posture. The bottom portion is provided with a connecting portion that rotatably connects the first shaft portion of the first side plate and the second shaft portion of the second side plate. The connecting portion has a vertically long first groove portion in which the first shaft portion is rotatably accommodated, and a vertically elongated second groove portion in which the second shaft portion is rotatably accommodated. The first groove portion has an upper opening that opens upward. The second groove portion is a wide space portion located at a lower portion, a narrow space portion located at an upper portion and having a groove width narrower than that of the wide space portion, and a side opening from the narrow space portion toward the side. And a part opening. The first shaft portion has a cross-sectional shape that is horizontally long when the first side plate is in the lying posture and vertically long when the first side plate is in the standing posture. The second shaft portion has a cross-sectional shape that is horizontally long when the second side plate is in the lying posture and vertically long when the second side plate is in the standing posture. When the first side plate is in the laid posture, the upper opening is narrower than the first shaft portion when viewed from above, and the narrow width is set when the second side plate is in the laid posture. The space portion is narrower than the second shaft portion.

According to the pallet container of one aspect and another aspect of the present invention, it is possible to prevent the shaft portion of the side plate from coming off the bottom portion when the pallet container is conveyed in the folded state.

FIG. 1 is an exploded perspective view showing the pallet container of Embodiment 1 in an exploded manner. FIG. 2 is an exploded perspective view showing an essential part of the above pallet container in an exploded manner. FIG. 3 is another exploded perspective view showing an essential part of the above pallet container in an exploded manner. FIG. 4 is a plan view showing a main part of the pallet container in the same state in a folded state. FIG. 5: is a perspective view which shows the principal part in the assembled state of the pallet container same as the above. FIG. 6 is a plan sectional view showing a main part of the pallet container of the above in an assembled state. FIG. 7A is a cross-sectional view showing a main part when the second side plate of the pallet container of the above is in an upright posture, and FIG. 7B is a main part when the second side plate in the same upright posture is lifted up. It is sectional drawing which shows a part. FIG. 8: is sectional drawing which shows the principal part in case the 2nd side plate with which the pallet container same as the above is lifted up from the fall position. 9A to 9D are cross-sectional views of a main part showing in sequence the state of connecting the second side plate to the connecting part of the pallet container. FIG. 10 is an exploded perspective view showing an essential part of the pallet container of the second embodiment in an exploded manner. FIG. 11 is another exploded perspective view showing the essential parts of the above pallet container in an exploded manner. FIG. 12A is a cross-sectional view showing a main part when the second side plate included in the pallet container of the above is in the upright posture, and FIG. 12B is a cross-sectional view of the second side plate in the upright posture of the same in a state of being lifted upward. It is sectional drawing which shows a part. FIG. 13: is sectional drawing which shows the principal part in case the 2nd side board same as the above rises from the fallen posture. 14A to 14D are cross-sectional views of a main part showing in sequence the state of connecting the second side plate to the connecting part of the pallet container of the above.

1. Pallet container of Embodiment 1 1-1. Outline FIG. 1 shows an exploded view of the pallet container 1 according to the first embodiment. The pallet container 1 has a plurality of side plates that are rotatable between a bottom portion 2 having a fork insertion portion 20, an upright posture that stands up so as to surround a space above the bottom portion 2, and a lying posture that falls on the bottom portion 2 and stacks. 3 and.

The plurality of side plates 3 include a first side plate 4 and a second side plate 5 that are adjacent to each other in a standing posture. The bottom part 2 is provided with a connecting part 6 to which the first shaft part 40 of the first side plate 4 and the second shaft part 50 of the second side plate 5 are rotatably connected.

As shown in FIG. 2, the connecting portion 6 has a vertically elongated first groove portion 60 in which the first shaft portion 40 is rotatably accommodated, and a vertically elongated second groove portion 61 in which the second shaft portion 50 is rotatably accommodated. .. The first groove 60 has an upper opening 62 that opens upward, and the second groove 61 has a side opening 63 that opens laterally.

The first shaft portion 40 has a cross-sectional shape that is horizontally long when the first side plate 4 is in the lying posture and vertically long when the first side plate 4 is in the upright posture. The second shaft portion 50 has a cross-sectional shape that is vertically long when the second side plate 5 is in the lying posture and horizontally long when the second side plate 5 is in the upright posture.

When the first side plate 4 is in the lying posture, the upper opening 62 is narrower than the first shaft portion 40 when viewed from above (see FIG. 4), and when the second side plate 5 is in the lying posture, The side opening 63 is narrower than the second shaft portion 50 when viewed from the side (see FIG. 8 ).

In the pallet container 1 having the above configuration, when the first side plate 4 is in the lying posture, the first shaft portion 40 of the first side plate 4 is prevented from coming out upward from the upper opening 62 of the first groove portion 60 of the connecting portion 6. Can be suppressed. Further, in this pallet container 1, when the second side plate 5 is in the lying posture, the second shaft portion 50 of the second side plate 5 is pulled out laterally from the side opening 63 of the second groove portion 61 of the connecting portion 6. Can be suppressed.

Therefore, in the pallet container 1, even when the side plates 4 and 5 are lifted up when the side plates 4 and 5 are transported in a folded state in which the side plates 4 and 5 lay down on the bottom part 2 and are stacked, the shaft parts 40 and 50 of the side plates 4 and 5 are It is possible to suppress disconnection from the connecting portion 6 provided on the bottom portion 2.

1-2. Details Next, each configuration of the pallet container 1 of the present embodiment shown in FIG. 1 will be described in more detail. The plurality of side plates 3 included in the pallet container 1 include a pair of first side plates 4 facing each other in a standing posture and a pair of second side plates 5 facing each other in a standing posture. In the following description, the direction in which the pair of first side plates 4 in the upright posture are opposed is the direction D1, and the direction in which the pair of second side plates 5 in the upright posture is opposed is the direction D2. Each configuration will be described as a direction. The directions D1 and D2 are directions parallel to the horizontal direction and orthogonal to each other. It should be noted that the horizontal wording used in the text is not limited to a strict meaning, and includes a substantially horizontal wording.

1-2-1. Bottom part The bottom part 2 has a rectangular outer shape in a plan view. The bottom portion 2 is made of synthetic resin. The bottom 2 is not limited to synthetic resin, but may be metal or wood.

The bottom part 2 has four side surfaces continuous in the circumferential direction. On each of the four side surfaces, two fork insertion portions 20 are formed at intervals in the horizontal direction. Each fork insertion portion 20 is a portion into which a fork of a forklift is inserted.

Each of the four corners of the bottom portion 2 is provided with two insertion holes 21 penetrating in the vertical direction. The lower portion of the insertion hole 21 is a large-diameter hole portion having a longer diameter than the upper portion of the insertion hole 21. A mounting hole 22 that opens upward is provided on the outer peripheral portion of the upper surface of the bottom portion 2. The mounting holes 22 are respectively located in the center of the bottom portion 2 in the direction D2 at both ends in the direction D1 and in the center of the direction D1 in both ends in the direction D2.

The connecting portion 6 is attached to each of the four corner portions of the bottom portion 2 by the bolts 23 inserted into the insertion holes 21 and the nuts 24 screwed to the bolts 23. The nut 24 fits within the large-diameter hole portion below the insertion hole 21.

1-2-2. First Side Plates The pair of first side plates 4 have a common structure. In the following, a common structure of the pair of first side plates 4 will be described. Moreover, below, it demonstrates on the basis of the 1st side board 4 in a standing posture.

The first side plate 4 is a plate-shaped member that has a longitudinal direction along the direction D2, a lateral direction along the vertical direction, and a thickness direction along the direction D1. The first side plate 4 is integrally formed by injection molding.

The first side plate 4 has a first shaft portion 40 that protrudes outward in the direction D2 at the lower ends of both ends in the direction D2. Since the first shaft portion 40 has an elliptical shape, sink marks are unlikely to occur during molding, and dimensional accuracy is easily ensured. The first shaft portion 40 is provided in the shape of an elliptic cylinder and is hollow.

In the present embodiment, the first side plate 4 has a side plate body 41 made of synthetic resin. As shown in FIG. 3, the side plate main body 41 includes a flat plate-shaped main body portion 410, a plurality of vertical ribs 411 protruding outward from the main body portion 410 in the direction D1 and spaced apart in the direction D2, and the main body portion. A large number of lateral ribs 412 projecting from the outer side in the direction D1 from 410 and located at intervals in the vertical direction. The large number of vertical ribs 411 and the large number of horizontal ribs 412 form a lattice. The main body 410 is provided with a large number of holes 413 penetrating in the direction D1.

As shown in FIG. 1, in the side plate body 41, the lower portion 41a has a shorter length in the direction D2 than the upper portion 41b. The lower portion 41a has a plurality of (five in this embodiment) leg portions 42 that are located at intervals in the direction D2. Of the plurality of leg portions 42, from the lower end portion of each of the two leg portions 42a located at both ends in the direction D2, the outer end portion in the direction D2 (the surface facing the outer side in the direction D2) to the first shaft portion 40. Project outside in the direction D2.

A shaft portion 43 protruding inward in the direction D2 is provided at a lower portion of an inner end portion (a surface facing inward in the direction D2) of each of the two legs 42a in the direction D2. The shaft portion 43 has the same shape as the first shaft portion 40. That is, the shaft portion 43 has an elliptical cross-sectional shape, and the length in the vertical direction is longer than the length in the direction D1.

Among the plurality of leg portions 42, the protruding ridge portions 44 for fitting are provided at the lower end portions of the remaining leg portions 42b except for the two leg portions 42a located at both ends in the direction D2.

Locking portions 45 are provided at both ends of the side plate body 41 in the direction D2 of the upper portion 41b. The locking portion 45 is used to connect with the end portion of the second side plate 5 in the direction D1 in the standing posture.

On the lower surface of the upper portion 41b of the side plate body 41, a convex portion 46 projecting downward is provided at a portion between the leg portions 42 adjacent to each other. The side plate body 41 has a plurality of (four in the present embodiment) convex portions 46.

A first convex portion 47 protruding downward is provided on a portion of the lower surface of the upper portion 41b of the side plate body 41 that is located outside the leg portion 42a in the direction D2. The first protrusions 47 are provided at both ends of the lower surface of the upper portion 41b of the side plate body 41 in the direction D2. The 1st convex part 47 is provided in planar view hexagonal shape (refer FIG. 3).

1-2-3. Second Side Plates The pair of second side plates 5 have a common structure. Hereinafter, a common structure of the pair of second side plates 5 will be described. Although FIG. 1 shows the second side plate 5 in the laid posture, the second side plate 5 in the standing posture will be described as a reference in accordance with the first side plate 4.

The second side plate 5 is a plate-shaped member that has a longitudinal direction along the direction D1, a lateral direction along the vertical direction, and a thickness direction along the direction D2. The second side plate 5 is integrally molded by injection molding.

As shown in FIGS. 1 to 3, the second side plate 5 has a second shaft portion 50 that protrudes outward in the direction D1 at the lower ends of both ends in the direction D1. Since the second shaft portion 50 has an elliptical shape, sink marks are unlikely to occur during molding, and dimensional accuracy is easily ensured. The second shaft portion 50 is provided in the shape of an elliptic cylinder and is hollow.

In the present embodiment, the second side plate 5 has a side plate body 51 made of synthetic resin. The side plate main body 51, like the side plate main body 41 of the first side plate 4, has a flat plate-shaped main body 510 and a large number of vertical ribs protruding outward from the main body 510 in the direction D2 and spaced apart in the direction D1. 511 and a large number of lateral ribs 512 protruding from the main body 510 to the outside in the direction D2 and located at intervals in the vertical direction. The large number of vertical ribs 511 and the large number of horizontal ribs 512 form a lattice. The body 510 is provided with a number of holes 513 penetrating in the direction D2.

As shown in FIG. 1, the side plate body 51 has a recess 52 at the lower end of the outer surface (the upper surface in FIG. 1). The recess 52 is a portion where the locking portion 45 of the first side plate 4 is accommodated when the second side plate 5 and the first side plate 4 are stacked on the bottom portion 2 in this order in the lying posture.

In the side plate body 51, the lower portion 51a has a shorter length in the direction D1 than the upper portion 51b. The second shaft portion 50 protrudes outward in the direction D1 from the lower ends of both end surfaces of the lower portion 51a of the side plate body 51 in the direction D1. Locked portions 53 to which the locking portions 45 of the first side plate 4 are locked are provided at both ends of the side plate body 51 in the direction D1 of the upper portion 51b.

As shown in FIG. 3, a second convex portion 54 protruding downward is provided on the lower surface of a portion of the upper portion 51b of the side plate main body 51 located outside the lower portion 51a in the direction D1. The second convex portion 54 is a pentagonal projection in plan view.

The second side plate 5 includes a fall prevention piece 55 protruding outward from the inner end in the direction D2 of both end surfaces of the lower portion 51a of the side plate body 51 in the direction D1, and a vertical direction of the fall prevention piece 55. And a projecting portion 56 projecting outward in the direction D2 from the central portion of the.

The fall prevention piece 55 is located above the second shaft portion 50 and forms a gap S1 with the second shaft portion 50. The upper end of the fall prevention piece 55 is integral with the lower surface of the upper portion 51b. The fall prevention piece 55 is located inside the direction D1 with respect to the second convex portion 54.

The protruding portion 56 includes a horizontal piece portion 560 linearly extending in the direction D1, a vertical piece portion 561 linearly extending upward from a central portion of the horizontal piece portion 560 in the direction D1, and a vertical piece portion 561 in the direction D1. And a plurality of lateral ribs 562 projecting to the outside. The plurality of horizontal ribs 562 are located at intervals in the vertical direction. The horizontal piece 560 and the vertical piece 561 are continuous in a T-shape, and therefore have high strength.

The horizontal piece portion 560 is located over the entire length of the fall prevention piece 55 in the direction D1. The lateral piece 560 is integral with the end surface of the lower portion 51a of the side plate body 51 in the direction D1. Each of the vertical piece portion 561 and the plurality of horizontal ribs 562 is integrated with the fall prevention piece 55.

The horizontal piece 560 and the vertical piece 561 may be formed in an L shape. For example, the horizontal piece portion 560 is formed so as to be located in a part of the falling prevention piece 55 in the direction D1, and the vertical piece portion 561 extends upward in a straight line from the outer end of the horizontal piece portion 560 in the direction D1. You may form so. Further, the protruding portion 56 may be configured by only the horizontal piece portion 560.

1-2-4. Connection Portions As shown in FIG. 1, the pallet container 1 includes four connection portions 6 provided at each of the four corners of the bottom portion 2. In the present embodiment, the two connecting portions 6 arranged in the direction D2 are integrated via the auxiliary wall 9. The two connecting portions 6 and the auxiliary wall 9 which are integral with each other form a lower frame member 10.

The lower frame member 10 is attached on both ends of the bottom portion 2 in the direction D1. The length of the lower frame member 10 in the direction D2 is the same as the length of the bottom portion 2 in the direction D2. The lower frame member 10 is, for example, a resin molded product.

The auxiliary wall 9 is a wall that assists in maintaining the standing posture of the first side plate 4. The auxiliary wall 9 is provided with a plurality of (five in the present embodiment) concave grooves 90 at intervals in the direction D2. Each of the plurality of recessed grooves 90 is open inward and upward in the direction D1.

Of the plurality of recessed grooves 90, the remaining recessed grooves 90b located between the two recessed grooves 90a located at both ends in the direction D2 are provided with recessed stripes 900 on the bottom portion. The ridge portion 44 of the first side plate 4 is fitted into the ridge portion 900.

A long groove-shaped groove portion 901 is provided on a wall located inside each of the two concave grooves 90a in the direction D2. The groove portion 901 has a symmetrical shape with respect to the first groove portion 60 of the connecting portion 6. That is, the groove portion 901 is a long groove having the vertical direction as the longitudinal direction, and has the upper opening 902 at the upper end. The groove portion 901 has the shortest width dimension in the direction D1 in the upper opening 902 at the upper end, and the width dimension in the direction D1 is longer than the width dimension of the upper opening 902 in the remaining portion except the upper end and is constant in the vertical direction. is there.

A plurality of (four in the present embodiment) recesses 91 are provided on the upper surface of the auxiliary wall 9. The plurality of recesses 91 are recesses that open upward. The plurality of recessed grooves 90 and the plurality of recessed portions 91 are alternately arranged side by side in the direction D2. The auxiliary wall 9 further has a protrusion 92 that projects downward from the lower surface of the auxiliary wall 9 and is used for attachment to the bottom portion 2.

The two connecting portions 6 have a symmetrical structure. Hereinafter, the connecting portion 6 shown in FIGS. 2 and 3 will be described in detail.

The connecting portion 6 is substantially L-shaped in a plan view. The connecting portion 6 is located between the first wall portion 64 extending along the direction D2, the second wall portion 65 extending along the direction D1, and between the first wall portion 64 and the second wall portion 65. And a third wall portion 66 that constitutes a corner portion of the connecting portion 6 that is L-shaped in a plan view. The third wall portion 66 includes an inner corner wall portion 660 that is arcuate in plan view and an outer corner wall portion 661 that is located outside the inner corner wall portion 660 and is arcuate in plan view.

The first wall portion 64 is a portion to which the first side plate 4 is connected, and the second wall portion 65 is a portion to which the second side plate 5 is connected.

The first wall portion 64 is a wall having a longitudinal direction along the up-down direction, a lateral direction along the direction D2, and a thickness direction along the direction D1. A first groove 60 and a first recess 67 are formed in the first wall 64.

The first groove portion 60 is a long groove having the vertical direction as the longitudinal direction, and has an upper opening 62 at the upper end. The first groove portion 60 also opens inside the direction D2. In the first groove portion 60, the opening width L1 of the upper opening 62 in the direction D1 is shorter than the opening width L2 of the lower opening in the direction D1. The first groove portion 60 has a constant opening width L2 in the up-down direction in the remaining portion except the upper opening 62 at the upper end.

The opening widths L1 and L2 correspond to the width dimension of the first shaft portion 40 of the first side plate 4 in the direction D1. The first shaft portion 40 having an elliptical cross section has a major axis having a width dimension L3 and a minor axis having a width dimension L4. The vertical dimension of the first shaft portion 40 when the first side plate 4 is in the upright posture is the width dimension L3. The length of the first shaft portion 40 in the direction D1 at this time is the width dimension L4. In other words, the length of the first shaft portion 40 in the direction D1 when the first side plate 4 is in the lying posture is the width dimension L3 (see FIG. 4 ). The opening width L1 is shorter than the width dimension L3 and longer than the width dimension L4. The opening width L2 is slightly longer than the width dimension L3.

As shown in FIG. 6, the shape of the inner peripheral surface of the first concave portion 67 is a shape that follows the shape of the first convex portion 47, and in the present embodiment, is a concave shape having a hexagonal shape in plan view. As shown in FIGS. 3 and 4, the connecting portion 6 further includes a first through hole 68 extending downward from a part (specifically, the central portion) of the bottom surface of the first recess 67.

The first recess 67 and the first through hole 68 penetrate the first wall portion 64 in the vertical direction. The bolt 23 for attaching the connecting portion 6 to the bottom portion 2 is inserted into the first recess 67 and the first through hole 68. The shape of the head of the bolt 23 is hexagonal, and the shape of the inner peripheral surface of the first recess 67 is a shape that also follows the shape of the head of the bolt 23. The head of the bolt 23 is received by the bottom surface of the first recess 67, and the rotation is restricted by the inner peripheral surface of the first recess 67. The shaft portion of the bolt 23 is passed through the first through hole 68 and the insertion hole 21 of the bottom portion 2.

As shown in FIGS. 2 and 3, the second wall portion 65 has a longitudinal direction along the up-down direction, a lateral direction along the direction D1, and a thickness direction along the direction D2. Is. The second wall portion 65 is provided with a second groove portion 61, a second recess 69, a recess 70, and a retaining portion 71.

The second groove portion 61 is a long groove having the up-down direction as the longitudinal direction, and has a side opening 63 that is open at the upper end toward the outside in the direction D2. The second groove portion 61 also opens inside the direction D1. The second groove portion 61 is provided from the central portion in the vertical direction of the second wall portion 65 to the lower end portion. The opening width L5 in the vertical direction of the side opening 63 of the second groove portion 61 is narrower than the opening width L6 in the direction D2. The second groove portion 61 has a constant opening width L6 in the direction D2 in the vertical direction.

The opening widths L5 and L6 correspond to the width dimension of the second shaft portion 50 of the second side plate 5. The second shaft portion 50 having an elliptical cross section has a major axis with a width dimension L7 and a minor axis with a width dimension L8. The length of the second shaft portion 50 in the direction D2 when the second side plate 5 is in the standing posture is the width dimension L7. The vertical length of the second shaft portion 50 at this time is a width dimension L8. In other words, the vertical length of the second shaft portion 50 when the second side plate 5 is in the lying posture is the width dimension L7. The opening width L5 is shorter than the width dimension L7 and longer than the width dimension L8. The opening width L6 is slightly longer than the width dimension L7.

As shown in FIG. 6, most of the shape of the inner peripheral surface of the second concave portion 69 is a shape that follows the shape of the second convex portion 54, and in the present embodiment, it is a hexagonal concave in plan view. .. As shown in FIGS. 3 and 4, the connecting portion 6 further has a second through hole 72 extending downward from a part (specifically, the central portion) of the bottom surface of the second recess 69.

The second recess 69 and the second through hole 72 penetrate the second wall portion 65 in the vertical direction. The bolt 23 that fixes the connecting portion 6 to the bottom portion 2 is inserted into the second recess 69 and the second through hole 72. The head of the bolt 23 has a hexagonal shape, and the inner peripheral surface of the second recess 69 has a shape that follows the shape of the head of the bolt 23. The head of the bolt 23 is received by the bottom surface of the second recess 69, and its rotation is restricted by the inner peripheral surface of the second recess 69. The shaft portion of the bolt 23 is passed through the second through hole 72 and the insertion hole 21 of the bottom portion 2.

As shown in FIG. 2, the recess 70 is located above the second groove portion 61, and is open both inside the direction D1 and inside the direction D2. A retaining portion 71 is located in the recess 70. The retaining portion 71 projects downward from the inner end of the inner surface 700 facing the lower side of the recess 70 in the direction D1.

The retaining portion 71 has a vertical piece 710 protruding downward from the inner surface 700 and a plurality of horizontal ribs 711 protruding inward in the direction D1 from the vertical piece 710. The plurality of horizontal ribs 711 are located at intervals in the vertical direction. Each of the plurality of lateral ribs 711 is a ridge extending along the direction D2. Each of the vertical piece 710 and the plurality of horizontal ribs 711 is integrated with a surface of which the outer end in the direction D2 faces the inner side of the recess 70 in the direction D2. The vertical piece portion 710 is continuous so as to form a T shape with respect to the inner surface 700, and therefore has high strength.

It should be noted that the retaining portion 71 may be formed in an L-shape by only including the vertical piece portion 710 and one horizontal rib 711 protruding inward in the direction D1 from the lower end thereof. Further, the retaining portion 71 may be configured by only the vertical piece portion 710, or may be configured by only one horizontal rib 711 located at the lower end.

The side plates 4 and 5 are connected to the connecting portion 6 as shown in FIG. FIG. 5 shows how the side plates 4 and 5 are connected to the connecting portion 6 when they are in the standing posture.

At this time, in the first side plate 4, as shown in FIG. 6, the first shaft portion 40 is accommodated in the first groove portion 60 of the connecting portion 6, and the first convex portion 47 is in the first concave portion 67 of the connecting portion 6. Fits. Note that FIG. 6 shows a cross section at the same level as the upper surface of the connecting portion 6.

Further, at this time, in the second side plate 5, as shown in FIG. 7A, the second shaft portion 50 is accommodated in the second groove portion 61 of the coupling portion 6, and the protrusion portion 56 is accommodated in the recess 70 of the coupling portion 6. At this time, the lateral piece 560 of the protruding portion 56 is located below the retaining portion 71 of the connecting portion 6, and the lower portion of the fall prevention piece 55 is in the direction D2 of the second wall portion 65 of the connecting portion 6. Located on the inner side. At this time, the vertical distance L9 from the lateral piece 560 of the protrusion 56 to the retaining portion 71 is shorter than the vertical distance L10 from the second shaft portion 50 to the upper wall 610 of the second groove 61. The distance L9 is longer than the vertical length L11 (FIG. 7B) of the second convex portion 54. The second side plate 5 is located inside the direction D1 from the outer end of the first side plate 4 in the direction D2.

By connecting the side plates 4 and 5 to the connecting portion 6 in this manner, the first side plate 4 is prevented from falling from the standing posture to both sides in the direction D1, and the second side plate 5 is held in the standing posture. It is possible to suppress falling from both sides in the direction D2.

Further, when the second side plate 5 in the upright posture is lifted up due to the vibration applied during the transportation of the pallet container 1, as shown in FIG. 7B, the horizontal piece portion 560 of the projecting portion 56 is connected to the retaining portion 71 of the connecting portion 6. By hitting, the upward movement of the second side plate 5 is restricted. At this time, as shown in FIG. 7A, since the distance L9 is shorter than the distance L10, the second side plate 5 in the standing posture reaches the position where the second shaft portion 50 faces the side opening 63 of the second groove portion 61. It is prevented from moving. Thereby, when the second side plate 5 is in the upright posture, it is possible to prevent the second shaft portion 50 from coming out of the second groove portion 61 of the connecting portion 6. Since the distance L9 is longer than the vertical length L11 (FIG. 7B) of the second convex portion 54, the second side plate 5 in the standing posture can move to the position where the second convex portion 54 comes out of the second concave portion 69. Is.

Further, the side plates 4 and 5 are connected to the connecting portion 6 as shown in FIG. In FIG. 4, the side plates 4 and 5 are displayed in different colors for easy understanding. FIG. 4 shows how the side plates 4 and 5 are connected to the connecting portion 6 when they are in the lying posture.

At this time, in the first side plate 4, the first shaft portion 40 is accommodated in the first groove portion 60 of the connecting portion 6. The width dimension L3 of the first shaft portion 40 in the direction D1 is longer than the opening width L1 of the upper opening 62 of the first groove portion 60. The first side plate 4 is located above the second side plate 5.

At this time, in the second side plate 5, the second shaft portion 50 is set in the second groove portion 61 of the connecting portion 6. The vertical width dimension L7 of the second shaft portion 50 is longer than the opening width L5 of the side opening 63 of the second groove portion 61 (see FIG. 8 ).

By connecting the side plates 4 and 5 to the connecting portion 6 in this way, even if the side plates 4 and 5 in the laid-down posture may be lifted up by the vibration generated at the time of conveyance, the first shaft portion 40 is connected to the connecting portion 6. It is possible to prevent the upper opening 62 from coming out upward. Further, it is possible to prevent the second shaft portion 50 from laterally slipping out from the side opening 63 of the connecting portion 6.

1-3. Assembly Method Next, an example of a method of assembling the pallet container 1 described above will be described.

First, the lower frame member 10 is attached on both ends of the bottom portion 2 in the direction D1. To fix the lower frame member 10 to the bottom portion 2, the bolt 23 is inserted from above into the recesses 67 and 69, the through holes 68 and 72, and the insertion holes 21 and 21 of the connecting portion 6, and the nut 24 is attached to the lower portion of the bolt 23. By tightening the screws.

Next, the second side plate 5 is connected to the two connecting portions 6 arranged in the direction D1. As shown in FIGS. 9A and 9B, the second side plate 5 has a gap between the second shaft portion 50 of the second side plate 5 and the fall prevention piece 55 in a posture in which the second side plate 5 is slightly tilted from the standing posture. The upper portion of the second wall portion 65 of the connecting portion 6 is passed through S1. Next, as shown in FIGS. 9C and 9D, the second shaft portion 50 of the second side plate 5 is inserted into the second groove portion 61 through the side opening 63, and the second side plate 5 is stacked on the bottom portion 2. 9A to D, illustration of the bottom portion 2, the first side plate 4, and the wall portions 64 and 66 of the connecting portion 6 is omitted.

As described above, the second side plate 5 is stacked on the bottom portion 2 in the lying posture. Each of the pair of second side plates 5 is connected to the connecting portion 6 in the same manner and stacked on the bottom portion 2 in a lying posture. The pair of second side plates 5 are located apart from each other in the direction D2 while being stacked on the upper surface of the bottom portion 2.

Next, the first side plate 4 in the standing posture is dropped into the lower frame member 10 from above. At this time, the first shaft portion 40 of the first side plate 4 in the standing posture is inserted into the first groove portion 60 through the upper opening 62 of the first groove portion 60 of the connecting portion 6, and the plurality of leg portions 42 of the first side plate 4 are inserted. Are inserted into the plurality of concave grooves 90 of the auxiliary wall 9. In addition, the shaft portion 43 of the first side plate 4 is inserted into the groove portion 901 through the upper opening 902 of the groove portion 901 of the auxiliary wall 9, and the convex streak portion 44 of the first side plate 4 becomes the concave streak portion 900 of the auxiliary wall 9. Be fitted. Further, the first convex portion 47 of the first side plate 4 fits into the first concave portion 67 of the connecting portion 6, and the plurality of convex portions 46 of the first side plate 4 fit into the plurality of concave portions 91 of the auxiliary wall 9. Thus, the lower frame member 10, that is, the two connecting portions 6 and the auxiliary wall 9, support the first side plate 4 in the upright posture. At this time, the plurality of convex portions 46 of the first side plate 4 are accommodated in the plurality of concave portions 91 of the auxiliary wall 9 so that the central portion of the first side plate 4 in the direction D2 projects outward or inward in the direction D1. Swelling can be suppressed.

The first side plate 4 in the standing posture is moved upward from the state of being supported by the lower frame member 10 and is rotated inward in the direction D1 about the shaft portions 40 and 43, so that the second side plate 5 in the lying posture is provided. You can take a prone position that stacks on top of you.

Each of the pair of first side plates 4 is connected to the connecting portion 6 (lower frame member 10) in the same manner and can be rotated from the standing posture to the lying posture. The pair of first side plates 4 are separated from each other in the direction D1 while being stacked on the pair of second side plates 5. At this time, the locking portions 45 of the pair of first side plates 4 are accommodated in the recesses 52 of the pair of second side plates 5, so that the pair of first side plates 4 and the pair of second side plates 5 are stacked in parallel. The height is suppressed, and the displacement of the first side plate 4 with respect to the second side plate 5 is suppressed.

As described above, the pallet container 1 can be in a folded state in which the side plates 4 and 5 are stacked on the bottom portion 2 in the lying posture.

Next, an example of a method of assembling the folded pallet container 1 into a box shape will be described.

First, each of the pair of first side plates 4 in the lying posture is rotated outward about the first shaft portion 40 in the direction D1 to stand up on the lower frame member 10. Each of the pair of first side plates 4 stands up when the first convex portion 47 of the first side plate 4 fits into the first concave portion 67 of the connecting portion 6, and the standing posture is maintained. Further, at this time, the protrusions 44 of the legs 42 of the first side plate 4 are fitted into the recesses 900 of the auxiliary wall 9, and the protrusions 46 of the first side plate 4 are included in the auxiliary wall 9. By being accommodated in the concave portion 91, the maintenance of the standing posture is assisted.

Next, the pair of second side plates 5 in the lying posture are rotated outward in the direction D2 about the second shaft portion 50, and the second convex portion 54 of the second side plate 5 is made into the second concave portion 69 of the connecting portion 6. Hold. By rotating the second side plate 5 from the lying posture to the standing posture, the locked portions 53 at both end portions of the second side plate 5 are engaged with the locking portions 45 at both end portions of the pair of first side plates 4. Are locked. As a result, the side edges of the first side plate 4 and the second side plate 5 in the standing posture are directly connected to each other.

As described above, the pallet container 1 can be in a box-shaped assembled state in which the pair of first side plates 4 and the pair of second side plates 5 are erected on the outer peripheral portion of the bottom portion 2.

In the pallet container 1 in the assembled state, the horizontal piece portion 560 of the protruding portion 56 of the second side plate 5 in the upright position is located below the retaining portion 71 of the connecting portion 6 (see FIG. 7A). Therefore, even if the second side plate 5 is lifted upward due to vibration or the like during the transportation of the pallet container 1, the horizontal piece portion 560 of the projecting portion 56 of the second side plate 5 should hit the retaining portion 71 of the connecting portion 6. Thus, the upward movement of the second side plate 5 is restricted (see FIG. 7B). As a result, in this pallet container 1, it is possible to prevent the second shaft portion 50 of the second side plate 5 in the standing posture from reaching the side opening 63 of the connecting portion 6, and the second shaft portion of the second side plate 5 is prevented. It is possible to prevent 50 from coming off from the connecting portion 6. Further, at this time, since the first side plate 4 is connected to the second side plate 5 by the locking portion 45, the first shaft portion 40 of the first side plate 4 in the upright posture is connected to the first groove portion 60 of the connecting portion 6. It is possible to prevent the upper opening 62 from coming out upward.

1-4. In the pallet container 1 of the first embodiment described above, as shown in FIG. 4, when the first side plate 4 is in the lying position, the upper opening 62 of the first groove portion 60 of the connecting portion 6 is viewed from above. The width is narrower than that of the first shaft portion 40 of the first side plate 4.

Therefore, in the pallet container 1 according to the first embodiment, when the pallet container 1 in the folded state is transported, the first shaft portion 40 of the first side plate 4 in the lying posture has the upper opening of the first groove portion 60 of the connecting portion 6. It is possible to suppress the upward escape from 62.

Further, in the pallet container 1 of the first embodiment, as shown in FIG. 8, when the second side plate 5 is in the lying posture, the side opening 63 of the second groove portion 61 of the connecting portion 6 is viewed from the side, It is narrower than the second shaft portion 50 of the second side plate 5.

Therefore, in the pallet container 1 of the first embodiment, when the pallet container 1 in the folded state is conveyed, the second shaft portion 50 of the second side plate 5 in the lying posture is provided with the side portion of the second groove portion 61 of the connecting portion 6. It is possible to suppress lateral escape from the opening 63.

In addition, in the pallet container 1 of the first embodiment, since the wall (upper wall 610) is above the second shaft portion 50 of the second side plate 5 when the second side plate 5 is in the lying posture, this wall (upper wall The wall 610) can restrict the upward movement of the second side plate 5 in the lying posture.

In addition, in the pallet container 1 of the first embodiment, since the first side plate 4 in the lying posture is located above the second side plate 5 in the lying posture (see FIG. 4), the second side plate 5 in the lying posture is It is restrained by the first side plate 4 in the lying posture and is hard to lift.

In addition, in the pallet container 1 of the first embodiment, as shown in FIG. 6, when the first side plate 4 is in the upright posture, the first shaft portion 40 of the first side plate 4 has the connecting portion 6 of the connecting portion 6 as viewed from above. Since the width is narrower than the upper opening 62 of the first groove portion 60, the work of attaching and detaching the connecting portion 6 is easy.

Further, in the pallet container 1 of the first embodiment, as shown in FIG. 7A, when the second side plate 5 is in the standing posture, the retaining portion 71 of the connecting portion 6 is provided above the lateral piece portion 560 of the protruding portion 56. Since it is located, it is possible to regulate the upward movement of the second side plate 5 in the standing posture.

In addition, in the pallet container 1 of the first embodiment, as shown in FIG. 7B, the second shaft portion 50 of the second side plate 5 is located below the side opening 63 in a state where the protrusion 56 contacts the retaining portion 71. To position.

Therefore, in the pallet container 1 of the first embodiment, it is possible to prevent the second shaft portion 50 of the second side plate 5 in the standing posture from coming off from the side opening 63.

Further, in the pallet container 1 of the first embodiment, the first side plate 4 and the second side plate 5 in the standing posture are connected to each other by the engagement of the locking portion 45 and the locked portion 53 at their side end portions. ing.

Therefore, in the pallet container 1 of the first embodiment, the floating of the first side plate 4 in the standing posture can be suppressed by the connection with the second side plate 5 in the standing posture. Further, since the side ends of the side plates 4 and 5 in the standing posture are connected to each other, the first side plate 4 can prevent the second side plate 5 in the standing posture from falling inward in the direction D2.

Further, in the pallet container 1 of the first embodiment, as shown in FIG. 6, the connecting portion 6 is in the standing posture and the first concave portion 67 in which the first convex portion 47 of the first side plate 4 is accommodated when in the standing posture. And a second concave portion 69 in which the second convex portion 54 of the second side plate 5 at a given time is accommodated.

Therefore, in the pallet container 1 of the first embodiment, the posture of the side plates 4 and 5 in the standing posture can be maintained by the connecting portion 6, and the first side plate 4 in the standing posture can be tilted to both sides in the direction D1 and can be set in the standing posture. The connection portion 6 can prevent the second side plate 5 from falling to both sides in the direction D2.

Further, in the pallet container 1 of the first embodiment, as shown in FIG. 4, since the through holes 68 and 72 extend downward from a part of the bottom surfaces of the recesses 67 and 69 of the connecting portion 6, these configurations are It can be used as a fixing hole into which a bolt 23 for fixing the connecting portion 6 to the bottom portion 2 is inserted.

Therefore, in the pallet container 1 of the first embodiment, the connecting portion 6 has a hole for fixing to the bottom portion 2 separately from the structure (recess portion 67, 69) for supporting the protrusion portions 47, 54 of the side plates 4, 5. The connecting portion 6 can be provided more compactly than in the case where the connecting portion 6 is provided.

Further, in the pallet container 1 of the first embodiment, as shown in FIG. 7A, the second side plate 5 is a fall prevention piece located inside the direction D2 of the second wall portion 65 of the connecting portion 6 when in the standing posture. Have 55.

Therefore, in the pallet container 1 of the first embodiment, it is possible to prevent the second side plate 5 in the standing posture from falling to the outside in the direction D2 by the fall prevention piece 55 hitting the second wall portion 65 of the connecting portion 6. ..

In the pallet container 1 of the first embodiment, the second side plate 5 releases the connection to the connecting portion 6 only when the second side plate 5 is inclined at an angle as shown in FIG. 9C with respect to the second wall portion 65 of the connecting portion 6. Since it is not possible, the second side plate 5 does not easily come off from the connecting portion 6.

1-5. Modified Example Next, a modified example of the pallet container 1 of the first embodiment described above will be described.

The pallet container 1 may not include the auxiliary wall 9, that is, the two connecting portions 6 arranged in the direction D2 may be separate bodies from each other. In this case, the plurality of legs 42 and the plurality of protrusions 46 can be omitted from the first side plate 4, and the first side plate 4 can have a simple shape such as a rectangular plate shape.

Further, the first side plate 4 and the second side plate 5 may have a structure in which the side ends are connected to each other in the standing posture, and the structure for the connection is the locking part 45 and the locked position shown in FIG. It is not limited to the part 53. For example, a lock pin capable of projecting and retracting is provided at an upper portion of one side end portion of the first side plate 4 and the second side plate 5, and a lock hole for catching the lock pin is provided at a corresponding portion of the other side of the lock pin. The side ends of the first side plate 4 and the second side plate 5 may be connected to each other by operating. In this case, each of the first side plate 4 and the second side plate 5 can omit the locking portion 45, the locked portion 53, and the recess 52, and can have a simple shape such as a rectangular plate shape.

Further, the method for attaching the connecting portion 6 to the bottom portion 2 is not limited to the method using the bolts 23 and the nuts 24, but a method for providing an engaging structure such as a claw on the bottom portion 2 and the connecting portion 6 and fixing the connecting portion 6 by engagement is also possible. It is also possible to adopt a method of fixing using a lock member other than the bolt 23 and the nut 24.

Further, instead of the through holes 68 and 72, the connecting portion 6 is provided with a through hole into which the bolt 23 is inserted in a portion (third wall portion 66) between the recesses 67 and 69 so that one bolt 23 is formed. You may make it fixed to the bottom part 2 by.

The first side plate 4 is composed of a plate-shaped main body portion and a pair of separate corner members attached to the lower end portions of both side ends of the main body portion. The pair of corner members has a first shaft portion 40. The first convex portion 47 may be provided. Similarly, the second side plate 5 is also composed of a plate-shaped main body portion and a pair of separate corner members attached to the lower end portions of both side ends of the main body portion. The portion 50 and the second convex portion 54 may be provided.

Further, the first side plate 4 may be a plate-shaped member that has a longitudinal direction along the up-down direction and has a lateral direction along the direction D2. Further, the second side plate 5 may be a plate-shaped member having a longitudinal direction along the up-down direction and a lateral direction along the direction D1.

Further, each of the side plate bodies 41 and 51 of the side plates 4 and 5 may be a hollow plate member having a honeycomb structure and steel plates (aluminum plates) attached to both sides in the thickness direction thereof. Incidentally, the hollow plate material is, instead of the honeycomb structure, a structure in which hollow parts are formed in one row like a hole of a harmonica by extrusion molding, a structure in which a large number of pillars are arranged in parallel, or a large number of cones such as a cone are arranged in parallel. The provided structure may be adopted, or another structure may be adopted. The hollow plate material may have a structure in which no steel plate is attached.

Further, the shape of the first convex portion 47 in plan view is not limited to a hexagon, and may be a polygon other than a hexagon or a substantially circular shape. Further, the second convex portion 54 is not limited to the pentagonal shape in plan view, but may be a polygon other than the pentagon or a substantially circular shape.

Further, the lateral piece portion 560 may be formed to be thicker than the falling prevention piece 55, and in this case, the lateral piece portion 560 can be reinforced.

In addition, the second side plate 5 may include a vertically long reinforcing rib that protrudes outward in the direction D2 from a portion of the fall prevention piece 55 below the horizontal piece portion 560. The reinforcing rib is provided, for example, in the center portion of the fall prevention piece 55 in the direction D1. In this case, a housing groove for accommodating the reinforcing rib is provided in a portion of the connecting portion 6 that faces the inner side in the direction D2 of the second wall portion 65 and corresponds to the reinforcing rib.

Further, each of the first shaft portion 40 and the second shaft portion 50 may have a bottomed cylindrical shape in which the tip end side in the projecting direction (axial direction) is closed, and in this case, the reinforcement of the shaft portions 40, 50 Can be achieved.

The first shaft portion 40 may have a cross-sectional shape that is horizontally long when the first side plate 4 is in the lying posture and vertically long when the first side plate 4 is in the upright posture. The cross sectional shape is not limited to an ellipse. The cross-sectional shape of the first shaft portion 40 fits into a virtual ellipse that becomes horizontally long when the first side plate 4 is in the lying posture and vertically long when the first side plate 4 is in the upright posture. The shape may be such that at least a part of the outer surface of the first shaft portion 40 is located on a virtual ellipse. For example, the cross-sectional shape of the first shaft portion 40 has a shape in which two rectangles having different lengths are orthogonal to each other in a cross shape, a shape in which two rectangles having the same length intersect in an X shape, and two circles are The shape may be such that the one side plate 4 is positioned at intervals in the lateral direction.

Similarly, the second shaft portion 50 also has a cross-sectional shape that is vertically long when the second side plate 5 is in the lying posture and horizontally long when the second side plate 5 is in the upright posture. However, the cross-sectional shape is not limited to an ellipse. The cross-sectional shape of the second shaft portion 50 fits in a virtual ellipse that becomes vertically long when the second side plate 5 is in the lying posture and horizontally long when the second side plate 5 is in the upright posture, and then The shape may be such that at least a part of the outer surface of the second shaft portion 50 is located on a virtual ellipse. For example, the cross-sectional shape of the second shaft portion 50 may be a shape in which two rectangles having different lengths are orthogonal to each other in a cross shape, a shape in which two rectangles having the same length intersect in an X shape, or two circles are the first shape. The two side plates 5 may have a shape or the like located at intervals in the thickness direction.

2. Pallet container of Embodiment 2 The pallet container 1A of Embodiment 2 is different from the pallet container 1 of Embodiment 1 in the direction (longitudinal direction) of the major axis of the second shaft portion 50A of the second side plate 5A and the connecting portion 6A. The second groove 61A has a different shape, and the other configurations are common. In the following description, regarding each configuration of the pallet container 1A of the second embodiment, the same reference numerals are given in the drawings for configurations common to the pallet container 1 of the first embodiment, and detailed description thereof is omitted. The configuration different from the container 1 will be described in detail.

As shown in FIGS. 10 and 11, the second side plate 5A has a second shaft portion 50A having an elliptical cross-sectional shape that is provided so as to be vertically long when the second side plate 5A is in a standing posture. In other words, the second side plate 5A has the second shaft portion 50A having an elliptical cross-sectional shape provided so as to be horizontally long when the second side plate 5A is in the lying posture (see FIGS. 13 and 14D). The second side plate 5A differs from the second side plate 5 of the first embodiment in that the direction of the long axis of the second shaft portion 50A (longitudinal direction) is different from the direction of the long axis of the second shaft portion 50 by 90 degrees. The rest of the configuration is common.

As shown in FIG. 11, the second shaft portion 50A has a long axis having a width dimension L7 and a short axis having a width dimension L8. The length in the direction D2 of the second shaft portion 50A when the second side plate 5A is in the standing posture is the width dimension L8, and the length in the up-down direction of the second shaft portion 50A at this time is the width dimension L7. is there. As shown in FIG. 13, the length of the second shaft portion 50A in the direction D2 when the second side plate 5A is in the lying posture is the width dimension L7.

As shown in FIG. 10, the connecting portion 6A is a long groove having the up-down direction as the longitudinal direction, and has a second groove portion 61A having different groove widths in the direction D2 between the upper portion and the lower portion. The connecting portion 6A is different from the connecting portion 6 of the first embodiment in that the shape of the second groove portion 61A is different from the shape of the second groove portion 61, but the rest of the configuration is common.

The second groove portion 61A includes a wide space portion 611 located below the second groove portion 61A, and a narrow space portion 612 located above the second groove portion 61 and having a groove width narrower than that of the wide space portion 611. The space portion 612 has a side opening 63 that opens laterally (specifically, the outside in the direction D2) from the upper portion.

The wide space portion 611 and the narrow space portion 612 are aligned in the vertical direction and are connected (communicate) with each other. Each of the wide space portion 611 and the narrow space portion 612 has a constant opening width in the direction D2 in the vertical direction.

As shown in FIG. 13, the opening width L12 of the wide space portion 611 in the direction D2 is longer than the opening width L13 of the narrow space portion 612 in the direction D2 and is larger than the width dimension L7 of the major axis of the second shaft portion 50A. Slightly long. The opening width L13 of the narrow space portion 612 in the direction D2 is shorter than the width dimension L7 of the long axis of the second shaft portion 50A and longer than the width dimension L8 of the short axis of the second shaft portion 50A.

The side opening 63 is open to the outside in the direction D2 from a portion extending from the upper end of the narrow space portion 612 of the second groove portion 61A to the central portion in the vertical direction. The vertical opening width L5 of the side opening 63 is shorter than the vertical length of the narrow space portion 612. The opening width L5 of the side opening 63 is shorter than the width dimension L7 of the major axis of the second shaft portion 50A and longer than the width dimension L8 of the minor axis of the second shaft portion 50A.

FIG. 12A shows how the second side plate 5A and the connecting portion 6A are connected to each other in the standing posture. The second side plate 5A is connected to the connecting portion 6A by fitting the second shaft portion 50A into the wide space portion 611 of the second groove portion 61A of the connecting portion 6A and the protrusion 56 into the recess 70 of the connecting portion 6A. Has been done. Further, at this time, the portion of the fall prevention piece 55 of the second side plate 5A below the horizontal piece portion 560 is formed into a recess 650 provided on the inner surface of the second wall portion 65 of the connecting portion 6A in the direction D2. Fits. The recess 650 has a vertical length corresponding to a portion of the fall prevention piece 55 below the horizontal piece portion 560. Therefore, when the second side plate 5A is in the standing posture, the inner surface of the fall prevention piece 55 in the direction D2 and the lower surface of the inner surface of the second wall portion 65 in the direction D2 below the recess 650. Form a flat surface that is flush with each other and has substantially no step.

When the second side plate 5A in the upright posture is lifted up due to vibration or the like during the transportation of the pallet container 1A, as shown in FIG. 12B, the horizontal piece 560 of the protrusion 56 is connected to the retaining portion 71 of the connecting portion 6A. By hitting, the upward movement of the second side plate 5A is restricted. As a result, when the second side plate 5A is in the standing posture, the second shaft portion 50A can be prevented from slipping out of the side opening 63 of the second groove portion 61A of the connecting portion 6A.

FIG. 13 shows how the second side plate 5A in the lying posture is connected to the connecting portion 6A when the second side plate 5A is lifted by vibration or the like generated when the pallet container 1A is conveyed. The second shaft 5A of the second side plate 5A is housed in the wide space 611 of the second groove 61A of the connecting portion 6A. Here, the opening width L13 of the second groove portion 61A in the direction D2 of the narrow space portion 612 is shorter than the width dimension L7 of the second shaft portion 50A in the direction D2. In other words, the narrow space portion 612 is narrower than the second shaft portion 50A when the second side plate 5A is in the lying posture. Therefore, when the second side plate 5A in the lying posture floats up due to vibration or the like that occurs during transportation, the second shaft portion 50A must hit a downward step surface located at the boundary between the wide space portion 611 and the narrow space portion 612. Thus, it is possible to suppress the entry into the narrow space portion 612. As a result, it is possible to prevent the second shaft portion 50A from coming out laterally from the side opening 63.

14A to 14D show an example of how the second side plate 5A is connected to the connecting portion 6A. As shown in FIGS. 14A and 14B, the second side plate 5A has a gap between the second shaft portion 50A of the second side plate 5A and the fall prevention piece 55 in a posture in which the second side plate 5A is slightly tilted from the standing posture. The upper portion of the second wall portion 65 of the connecting portion 6A is passed through S1. Next, as shown in FIG. 14C, the second side plate 5A is tilted until the vertical length of the second shaft portion 50A becomes equal to or smaller than the opening width L5 of the side opening 63, and the second shaft portion 50A is moved to the side It is inserted into the narrow space portion 612 of the second groove portion 61A through the opening 63. Next, in the narrow space portion 612, the second side plate 5A is rotated to an angle such that the length of the second shaft portion 50A in the direction D2 is equal to or smaller than the opening width L13 of the narrow space portion 612. Next, the second side plate 5A is moved downward, and the second shaft portion 50A is inserted into the wide space portion 611 of the second groove portion 61A. Next, the second side plate 5A is rotated to the lying posture and stacked on the bottom portion 2.

In the pallet container 1A of the second embodiment described above, when the second side plate 5A is in the lying posture, the second shaft portion 50A of the second side plate 5A is widened from the wide space portion 611 of the second groove portion 61A of the connecting portion 6A. It is possible to suppress the movement to the narrow space portion 612, and as a result, it is possible to prevent the second shaft portion 50A from laterally slipping out from the side opening 63.

In addition, in the pallet container 1A, when the second side plate 5A is in the lying posture, the second shaft portion 50A of the second side plate 5A and the side wall (the wall in the direction D2) of the wide space portion 611 of the second groove portion 61A are separated. The gap between them can be reduced, and the lateral displacement of the second side plate 5A can be suppressed.

Further, in the pallet container 1A, the second wall portion 65 includes an inner wall portion located inside the second groove portion 61 in the direction D2 and an outer wall portion located outside the second groove portion 61 in the direction D2. It is formed thicker than the lower wall portion located below 61A. Therefore, in the pallet container 1A, the strength of the portion of the second side plate 5A in contact with the second shaft portion 50A is improved when the second side plate 5A is in the lying posture.

In addition, also in the pallet container 1A of the second embodiment, the same operational effects as those of the pallet container 1 of the first embodiment described above can be obtained. Further, also for the pallet container 1A of the second embodiment, the same modified example as the modified example of the pallet container 1 of the above-described first embodiment can be adopted.

In addition, in the pallet container 1A of the second embodiment, two wall portions located on both sides of the first wall portion 64 in the direction D1 of the first groove portion 60 are defined as the second wall portion 65 of the second groove portion 61A. The wall portions may be formed thicker than the two wall portions located on both sides in the direction D2. In this case, it is possible to improve the strength of the two wall portions of the first wall portion 64 which are longer than the two side walls of the second wall portion 65 in the up-down direction and have no bent surface (step). Further, in this case, when the first side plate 4 is in the upright posture, the gap between the first shaft portion 40 of the first side plate 4 and the two wall portions of the first wall portion 64 can be reduced, and the first side plate 4 can be reduced. 4 can be suppressed. Note that the two wall portions of the first wall portion 64 are formed to be thicker than the two wall portions of the second groove portion 61A only in a portion below the intermediate portion in the vertical direction of the first groove portion 60. Good.

Further, in the pallet container 1A of the second embodiment, among the second wall portions 65, an inner wall portion located inside the second groove portion 61 in the direction D2 and an outer wall portion located outside of the second groove portion 61 in the direction D2 are provided. The wall may be formed thicker than the upper wall portion located above the second groove portion 61A for reinforcement.

Further, the pallet container 1A of the second embodiment may have the following configuration so that the first side plate 4 can be slightly tilted outward in the direction D1 from the vertical standing posture.

For example, a protrusion protruding downward may be provided at an end portion of the lower surface of the leg portion 42a on the inner side in the direction D1. Further, the lower surface of the leg portion 42a may be provided on the inclined surface so that the inner portion in the direction D1 is located lower. Further, the first shaft portion 40 may be provided with a protrusion protruding downward inward in the direction D1 so as to project downward from an end inside the direction D1 of the lower surface of the leg portion 42a. Further, of the first wall portion 64, the upper surface of the bottom wall portion located below the first groove portion 60 may be provided on the inclined surface so that the inner portion in the direction D1 is located above. Also, these configurations may be combined.

When the above configuration is provided, it is possible to prevent the second side plate 5A that switches the posture between the standing posture and the lying posture from coming into contact with the first side plate 4 that is in a posture inclined from the standing posture to the outside in the direction D1. it can.

3. Summary The pallet container 1 of the first embodiment described above has the following first configuration.

That is, the pallet container 1 of the first embodiment has a bottom portion 2 having the fork insertion portion 20, an upright posture that stands up so as to surround the space above the bottom portion 2, and a fall posture that the bottom portion 2 is laid down and stacked. And a plurality of rotatable side plates 3.

The plurality of side plates 3 include a first side plate 4 and a second side plate 5 that are adjacent to each other in a standing posture. The bottom part 2 is provided with a connecting part 6 to which the first shaft part 40 of the first side plate 4 and the second shaft part 50 of the second side plate 5 are rotatably connected.

The connecting portion 6 has a vertically elongated first groove portion 60 in which the first shaft portion 40 is rotatably accommodated, and a vertically elongated second groove portion 61 in which the second shaft portion 50 is rotatably accommodated. The first groove 60 has an upper opening 62 that opens upward, and the second groove 61 has a side opening 63 that opens laterally.

The first shaft portion 40 has a cross-sectional shape that is horizontally long when the first side plate 4 is in the lying posture and vertically long when the first side plate 4 is in the upright posture. The second shaft portion 50 has a cross-sectional shape that is vertically long when the second side plate 5 is in the lying posture and horizontally long when the second side plate 5 is in the upright posture.

When viewed from above, the upper opening 62 is narrower than the first shaft portion 40 when the first side plate 4 is in the lying posture, and when viewed from the side when the second side plate 5 is in the lying posture. The side opening 63 is narrower than the second shaft portion 50.

With the above-described first configuration, in the pallet container 1 of the first embodiment, when the first side plate 4 is in the lying posture, the first shaft portion 40 of the first side plate 4 has the first groove portion of the connecting portion 6. It is possible to suppress the upward escape of the upper opening 62 of the 60. In addition, in the pallet container 1 of the first embodiment, when the second side plate 5 is in the lying posture, the second shaft portion 50 of the second side plate 5 laterally extends from the side opening 63 of the second groove portion 61 of the connecting portion 6. It is possible to prevent the user from getting out. Accordingly, in the pallet container 1 of the first embodiment, when the side plates 4 and 5 are conveyed on the bottom portion 2 in a folded state, even if the side plates 4 and 5 are lifted, the shaft portions 40 and 50 of the side plates 4 and 5 are provided. However, it can be prevented from coming off from the connecting portion 6 provided on the bottom portion 2.

Further, the pallet container 1A of the second embodiment described above has the following second configuration.

That is, the pallet container 1A according to the second embodiment has a bottom portion 2 having the fork insertion portion 20, an upright posture that stands up so as to surround the space above the bottom portion 2, and a fall posture that falls on the bottom portion 2 and is stacked. And a plurality of rotatable side plates 3.

The plurality of side plates 3 include a first side plate 4 and a second side plate 5A that are adjacent to each other in a standing posture. The bottom portion 2 is provided with a connecting portion 6A that rotatably connects the first shaft portion 40 of the first side plate 4 and the second shaft portion 50A of the second side plate 5A.

The connecting portion 6A has a vertically elongated first groove portion 60 in which the first shaft portion 40 is rotatably accommodated, and a vertically elongated second groove portion 61A in which the second shaft portion 50A is rotatably accommodated. The first groove portion 60 has an upper opening 62 that opens upward.

The second groove portion 61A has a wide space portion 611 located at a lower portion, a narrow space portion 612 located at an upper portion and having a groove width narrower than that of the wide space portion 611, and opens from the narrow space portion 612 to the side. And a side opening 63 for

The first shaft portion 40 has a cross-sectional shape that is horizontally long when the first side plate 4 is in the lying posture and vertically long when the first side plate 4 is in the upright posture. The second shaft portion 50A has a cross-sectional shape that is horizontally long when the second side plate 5A is in the lying posture and vertically long when the second side plate 5 is in the upright posture.

When the first side plate 4 is in the laid posture, the upper opening 62 is narrower than the first shaft portion 40 when viewed from above, and when the second side plate 5A is in the laid posture, the narrow space 612 is formed. Is narrower than the second shaft portion 50A.

With the above second configuration, in the pallet container 1A according to the second embodiment, when the first side plate 4 is in the lying posture, the first shaft portion 40 of the first side plate 4 has the first groove portion of the connecting portion 6. It is possible to suppress the upward escape of the upper opening 62 of the 60. Further, in the pallet container 1A of the second embodiment, when the second side plate 5A is in the lying posture, the second shaft portion 50A of the second side plate 5A narrows from the wide space portion 611 of the second groove portion 61A of the connecting portion 6A. It is possible to suppress the movement to the space portion 612, and as a result, it is possible to prevent the second shaft portion 50A from laterally slipping out from the side opening 63.

Therefore, in the pallet container 1A of the second embodiment, even when the side plates 4, 5A are lifted up when the side plates 4, 5A are conveyed in a folded state in which the side plates 4, 5A lie down on the bottom 2 and are stacked, the shaft portions of the side plates 4, 5A are lifted. It is possible to prevent 40 and 50A from coming off from the connecting portion 6A provided on the bottom portion 2.

In addition, in the pallet container 1A of the second embodiment, when the second side plate 5A is in the lying posture, the space between the second shaft portion 50A of the second side plate 5A and the side wall of the wide space portion 611 of the second groove portion 61 is increased. The gap can be reduced, and the lateral displacement of the second side plate 5A can be suppressed.

Moreover, the pallet containers 1 and 1A of Embodiments 1 and 2 have the following third configuration in addition to the above first or second configuration.

That is, in the pallet containers 1 and 1A of Embodiments 1 and 2, the connecting portions 6 and 6A have the retaining portions 71. The second side plates 5 and 5</b>A have a protrusion 56 located below the retaining portion 71 when the second side plates 5 and 5</b>A are in the standing posture.

By providing the above-mentioned third configuration, in the pallet containers 1 and 1A of the first and second embodiments, even when the second side plates 5 and 5A are in the standing posture, even if the second side plates 5 and 5A float above the bottom portion 2, the retaining portion 71 is prevented. By hitting the protrusion 56 on the second side plate 5, 5A can be stopped from moving upward. Thereby, in the pallet containers 1 and 1A of Embodiments 1 and 2, when the first side plate 4 and the second side plates 5 and 5A are conveyed in an assembled state in which they are erected on the bottom portion 2, the second side plates 5 and 5A are lifted. Even if it does, it is possible to prevent the second shaft portions 50, 50A of the second side plates 5, 5A from coming off from the connecting portions 6, 6A provided on the bottom portion 2.

Although the embodiment has been described above, the pallet container is not limited to the above-described embodiment, and it is possible to make appropriate design changes and combine known techniques.

1,1A Pallet container 2 Bottom part 20 Fork insertion part 3 Side plate 4 First side plate 40 First shaft part 5,5A Second side plate 50,50A Second shaft part 6,6A Connecting part 60 First groove part 61,61A Second groove part 611 Wide space portion 612 Narrow space portion 62 Upper opening 63 Side opening 56 Projection portion 71 Detachment prevention portion

Claims (3)

A bottom portion having a fork insertion portion,
A standing posture that stands up to surround the space on the bottom portion, and a plurality of side plates that are rotatable between a lying posture that falls on the bottom portion and stacks,
The plurality of side plates include a first side plate and a second side plate that are adjacent to each other in the standing posture,
The bottom portion is provided with a connecting portion for rotatably connecting the first shaft portion of the first side plate and the second shaft portion of the second side plate,
The connecting portion has a vertically elongated first groove portion in which the first shaft portion is rotatably housed, and a vertically elongated second groove portion in which the second shaft portion is rotatably housed,
The first groove portion has an upper opening that opens upward,
The second groove portion has a side opening that opens to the side,
The first shaft portion has a cross-sectional shape that is horizontally long when the first side plate is in the lying posture, and is vertically long when the first side plate is in the standing posture,
The second shaft portion has a cross-sectional shape that is vertically long when the second side plate is in the lying posture, and is horizontally long when the second side plate is in the standing posture,
When the first side plate is in the lying posture, the upper opening is narrower than the first shaft portion when viewed from above,
A pallet container characterized in that the side opening is narrower than the second shaft portion when viewed from the side when the second side plate is in the lying posture. A bottom portion having a fork insertion portion,
A standing posture that stands up to surround the space on the bottom portion, and a plurality of side plates that are rotatable between a lying posture that falls on the bottom portion and stacks,
The plurality of side plates include a first side plate and a second side plate that are adjacent to each other in the standing posture,
The bottom portion is provided with a connecting portion for rotatably connecting the first shaft portion of the first side plate and the second shaft portion of the second side plate,
The connecting portion has a vertically elongated first groove portion in which the first shaft portion is rotatably housed, and a vertically elongated second groove portion in which the second shaft portion is rotatably housed,
The first groove portion has an upper opening that opens upward,
The second groove portion is a wide space portion located at a lower portion, a narrow space portion located at an upper portion and having a groove width narrower than that of the wide space portion, and a side opening from the narrow space portion toward the side. Part opening,
The first shaft portion has a cross-sectional shape that is horizontally long when the first side plate is in the lying posture, and is vertically long when the first side plate is in the standing posture,
The second shaft portion has a cross-sectional shape that is horizontally long when the second side plate is in the lying posture, and is vertically long when the second side plate is in the standing posture,
When the first side plate is in the lying posture, the upper opening is narrower than the first shaft portion when viewed from above,
The pallet container, wherein the narrow space portion is narrower than the second shaft portion when the second side plate is in the lying posture. The connecting portion has a retaining portion,
The pallet container according to claim 1 or 2, wherein the second side plate has a protrusion located below the retaining portion when the second side plate is in the upright posture.

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