JP5313746B2 - Box container - Google Patents

Description

  The present invention relates to a box-type container used for transportation of articles.

  Generally, as shown in FIG. 11, a box-type container used for conveying articles has a substantially rectangular bottom wall portion 72 and a side wall portion 73 extending upward from the outer peripheral edge of the bottom wall portion 72. It has a configuration in which articles are taken in and out from the upper opening. Further, generally, the box-shaped container 71 formed by vacuum forming is evacuated between the sheet made of heat-softened thermoplastic resin and the mold, and the sheet is brought into close contact with the mold so that the sheet central portion is formed. After forming the desired box shape, it is obtained by cutting the forming part from the sheet. Further, with respect to the box-shaped container 71 formed by the vacuum forming, a flange portion 75 extending substantially horizontally toward the outer peripheral direction of the box-shaped container 71 is formed at the edge portion 74 separated from the sheet. There are also things.

  By the way, when conveying a plurality of box-shaped containers 71 in a row by a conveyor, as shown in FIG. 12, the flange portion of one box-shaped container 71a among the box-shaped containers 71a and 71b adjacent to each other in the conveying direction of the conveyor. On the other hand, there is a risk that the flange portion 75 of the other box-type container 71b collides with and climbs up. In this case, the article accommodated in the box-type container 71 may move in the box-type container 71 or jump out of the box-type container 71, which may damage the article or adversely affect the work of taking out the article. There is a concern that inconveniences such as

  On the other hand, with respect to the outer side surface of the box-type container, in addition to the flange portions extending along the upper edge portion and the lower edge portion of each side wall portion, vertical ribs extending vertically so as to connect the upper and lower flange portions. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 60-105314

  When adopting the configuration of Patent Document 1 above, the flange portion of the other box-type container is located below the flange portion of one box-type container among the adjacent box-type containers in the conveying direction of the conveyor due to the presence of the vertical ribs. It is possible to avoid a situation such as entering, and to prevent the flange portions 75 from riding on each other.

  However, when a box-shaped container is formed by injection molding, it is possible to form vertical ribs as described in Patent Document 1, but when a box-shaped container is formed by vacuum molding, the vertical ribs are formed. It is virtually impossible to form. Further, for example, it may be possible to omit the flange portion 75 itself extending substantially horizontally toward the outer peripheral direction of the box-shaped container 71 at the end edge portion 74 of the box-shaped container 71. There is a concern that the strength of the end edge portion 74 of 71 may be reduced, which may easily cause breakage or the like.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a box-shaped container that is formed by vacuum forming and can prevent the flange portions from climbing up when being conveyed by a conveyor or the like. There is to do.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. From the substantially plate-shaped bottom wall portion, a frame-shaped peripheral wall portion constituted by side wall portions extending upward from each side edge portion of the bottom wall portion, and from the entire peripheral area of the upper edge portion of the peripheral wall portion A projecting portion protruding toward the outer peripheral direction of the peripheral wall portion,
The peripheral wall portion includes at least one pair of opposite side wall portions,
The overhanging portion is
An extending part extending from the upper edge part of each side wall part toward the outer peripheral direction of the peripheral wall part;
A folded portion extending downward from the leading edge of the extending portion;
A flange portion projecting from the leading edge of the folded portion toward the outer peripheral direction of the peripheral wall portion,
In the box-shaped container in which the bottom wall portion, the peripheral wall portion, and the overhang portion are integrally formed by vacuum forming ,
Relates to the aforementioned flange portion formed to correspond to a set of said opposed pair of side wall portions even without low, seen in front of the side wall portion is the flange portion formed to correspond to at least one side wall portion corresponding The flange portion formed corresponding to one side wall portion and the flange portion formed corresponding to the other side wall portion are horizontal with respect to a virtual vertical plane. A box-shaped container in which both flange portions intersect at two or more points when projected onto the container.

Mean 2. From the substantially plate-shaped bottom wall portion, a frame-shaped peripheral wall portion constituted by side wall portions extending upward from each side edge portion of the bottom wall portion, and from the entire peripheral area of the upper edge portion of the peripheral wall portion A projecting portion protruding toward the outer peripheral direction of the peripheral wall portion,
The peripheral wall portion includes at least one pair of opposite side wall portions,
The overhanging portion is
An extending part extending from the upper edge part of each side wall part toward the outer peripheral direction of the peripheral wall part;
A folded portion extending downward from the leading edge of the extending portion;
A flange portion projecting from the leading edge of the folded portion toward the outer peripheral direction of the peripheral wall portion,
In the box-shaped container in which the bottom wall portion, the peripheral wall portion, and the overhang portion are integrally formed by vacuum forming,
With respect to each of the flange portions formed corresponding to at least one pair of the opposing pair of side wall portions, the flange portion includes an oblique side portion extending in an oblique direction when the corresponding side wall portion is viewed from the front, and the flange portion; In the case where the flange portion is horizontally projected onto the virtual vertical plane with the virtual flange portion inverted about the virtual axis extending in the vertical direction at the center portion in the width direction of the corresponding side wall portion, A box-shaped container characterized by crossing at two or more points.

For example, when a plurality of box-shaped containers are arranged on the conveyor in the same direction along the conveying direction of the conveyor, a pair of opposing side wall portions on the opposing surface side of the box-shaped containers adjacent to each other along the conveying direction of the conveyor The flange portion (first flange portion) formed corresponding to one of the side walls and the flange portion (second flange portion) formed corresponding to the other side wall portion face each other. In this case, by satisfying the requirement of the means 1 , when the box containers adjacent to each other in the conveying direction of the conveyor come into contact with each other, the flange portions of both the box containers are brought into contact with each other.

In addition, for example, when a plurality of box-shaped containers are arranged on the conveyor by rotating every other 180 degrees along the conveying direction of the conveyor and changing the direction, the first flange portion of a predetermined box-shaped container and the The first flange portion of the box-shaped container adjacent to the second flange portion of the box-shaped container is opposed to the second flange portion of the predetermined box-shaped container and the second flange portion of the box-shaped container adjacent thereto. In this case, by satisfying the requirement of the means 2 , when adjacent box-shaped containers contact with each other in the conveying direction of the conveyor, the flange portions of both the box-shaped containers come into contact with each other.

Therefore, by satisfying the requirements of the above means 1 and 2 , when the box containers adjacent to each other in the conveying direction of the conveyor come into contact with each other, the flange portions of both the box containers can be brought into contact with each other. it can. For this reason, the situation where the flange part of one box-type container among the box-type containers adjacent to each other can sink under the flange part of the other box-type container can be prevented. Therefore, it is possible to prevent the flanges of the box-shaped containers adjacent to each other from climbing, and due to the climbing of the flanges, the articles accommodated in the box-shaped container may shift and jump out. Alternatively, it is possible to solve the problem that the box-shaped container itself shifts (or deviates from the conveyor in some cases). As a result, it is possible to obtain a box-type container capable of stably transporting the stored articles on the conveyor.

  In addition, the overhang portion includes an extension portion and a turn-up portion, and the height of the side wall portion (peripheral wall portion) is not changed partially by changing the extension length of the turn-up portion (above the peripheral wall portion). The height and inclination angle of the flange portion can be changed without making the edge uneven. Therefore, a situation in which the height of the side wall portion (peripheral wall portion) is partially changed, leading to an increase in the size of the box-type container or a reduction in the inner space for accommodating articles is avoided. be able to. In addition, by providing a flange portion that protrudes perpendicular to the folded portion at the leading edge of the folded portion, the strength of the outer end edge of the overhang portion (lower end edge of the folded portion) can be increased. It is possible to make it difficult to cause damage or the like.

  It should be noted that “a mark is provided on the upper surface of the extension portion corresponding to the predetermined side wall portion”. For example, if the above-mentioned effects are not achieved depending on the direction in which the box-shaped container is installed on the conveyor, it is necessary to place the box-shaped container on the conveyor while checking the shape of the flange portion, resulting in a decrease in workability. There is concern. On the other hand, by providing a mark on the upper surface of the extending portion, it is possible to instantaneously determine the correct installation direction of the box-shaped container without checking the shape of the flange portion. Therefore, it is possible to suppress a situation in which the direction in which the box-type container is installed is mistaken, and to dramatically improve workability.

Further , according to the means 1 and 2, when the box containers adjacent to each other in the conveying direction of the conveyor come into contact with each other, the flange portions of the two box containers are brought into contact with each other so as to intersect at two or more points. Can do. For this reason, it is easy to maintain the balance when the box containers adjacent to each other come into contact with each other. For example, as in the case where the flange parts abut at one point, the box container is rotationally displaced around the abutting part. It is possible to prevent such a situation. Further, by increasing the number of places that come into contact with each other, the impact at the time of contact can be dispersed, and damage to the flange portion can be suppressed.

Means 3 . The bottom wall portion has a substantially rectangular shape with a pair of opposed long side portions and a pair of opposed short side portions,
The peripheral wall portion includes a pair of first side wall portions extending upward from the long side portions of the bottom wall portion, and a pair of second side walls extending upward from the short side portions of the bottom wall portion. and a part,
A pair of said flange portions formed respectively to correspond to the first side wall portion of the front Symbol pair, and relates to each of the pair of the flange portions formed to correspond to the second side wall portion of the pair, one side wall portion When the flange portion formed corresponding to the other side wall portion and the flange portion formed corresponding to the other side wall portion are projected horizontally with respect to the virtual vertical plane, the two flange portions are two or more points. The box-shaped container according to means 1, characterized in that it intersects with each other.

Means 4 . The bottom wall portion has a substantially rectangular shape with a pair of opposed long side portions and a pair of opposed short side portions,
The peripheral wall portion includes a pair of first side wall portions extending upward from the long side portions of the bottom wall portion, and a pair of second side walls extending upward from the short side portions of the bottom wall portion. and a part,
A pair of said flange portions formed respectively to correspond to the first side wall portion of the front Symbol pair, and relates to each individual flange portions of the pair of the flange portions formed to correspond to the second side wall portion of said pair, said flange And a virtual flange portion obtained by inverting the flange portion around the virtual axis extending in the vertical direction at the center portion in the horizontal width direction of the corresponding side wall portion. The box-shaped container according to means 2, wherein the flange portions intersect at two or more points .

According to the means 3 , 4 , the flange portions intersect and come into contact with each other regardless of which of the first side wall portions and the second side wall portions of the box containers adjacent to each other. For this reason, when the box-shaped container is transported by the conveyor, the above-described effect of preventing the flange portions from climbing up regardless of which of the long side and the short side of the box-shaped container is installed along the transport direction. Is done. Therefore, the direction in which the box-type container is installed on the conveyor can be freely selected, and the versatility of the box-type container can be expanded.

Means 5 . The box according to any one of means 1 to 4 , characterized in that the front end edge in the projecting direction of the oblique side part has the entire longitudinal direction from the upper end part to the lower end part on the same virtual plane extending in the vertical direction. Mold container.

  In general, the peripheral wall portion (side wall portion) of the box-shaped container is formed to be inclined toward the outer peripheral side of the peripheral wall portion toward the upper side (opening side of the box-shaped container) for convenience of molding. For the same reason, the folded portion is also formed to be inclined downward toward the outer peripheral side of the peripheral wall portion. For this reason, for example, when the protrusion length of the flange portion protruding from the folded portion to the outer peripheral side of the peripheral wall portion is the same in any part, the tip edge of the hypotenuse portion (the end edge on the outer peripheral side of the peripheral wall portion of the hypotenuse portion) Is inclined downward toward the outer peripheral side of the peripheral wall portion. However, in this case, when adjacent box containers collide with each other, the flange portion of one box container is displaced upward so as to be guided by the oblique side portion of the flange portion of the other box container, There is a concern that one of the box-shaped containers will float.

On the other hand, according to this means 5 , the tip edge of the hypotenuse part exists (in the installed state) on the same vertical plane. For this reason, even if the oblique sides of the box containers adjacent to each other collide with each other, it is possible to reliably avoid a situation in which the box container is lifted. Therefore, the effect of the means 1 is more reliably achieved.

Means 6 . The box-shaped container according to any one of means 1 to 5 , wherein each of the oblique sides has a length in a horizontal direction of a tip edge thereof longer than a length in a vertical direction.

According to the means 6 , the length of the hypotenuse part in the direction orthogonal to the transport direction can be made as long as possible while suppressing the enlargement of the overhanging part. Therefore, when the box-shaped containers adjacent to each other are in contact with each other in a state of being relatively displaced in a direction orthogonal to the transport direction, the contact position of the flange portions (the position of the oblique side portion) is shifted. It is possible to suppress a situation in which the flange portions do not come into contact with each other so as to intersect with each other.

The length of the tip edge of the hypotenuse in the horizontal direction (the width direction of the corresponding side wall) is at least 1.5 times the length in the vertical direction (the height of the corresponding side wall). It is good. Further, as described above hand stage, when in contact the box-shaped container adjacent to each other, the flange portions are (different in the inclined portion) because the you abut at two points or more, the inclined portion leading edge of The length in the horizontal direction is preferably less than or equal to ½ of the lateral width of the corresponding side wall.

It is the perspective view which looked at the box-type container from the upper surface side. It is the perspective view which looked at the box-type container from the lower surface side. It is a top view of a box-shaped container. It is a bottom view of a box-type container. It is a side view of a box-type container. It is a side view of a box-type container. It is a side view of a box-type container. It is a side view of a box-type container. It is a side view of the box-shaped container in another embodiment. It is a side view of the box-shaped container in another embodiment. It is a perspective view of the conventional box-type container. It is a partial side view for demonstrating the malfunction of the conventional box-type container.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIGS. 1 to 4 and the like, the box-shaped container 1 includes a bottom wall 2 having a substantially rectangular plate shape having a pair of opposed long sides and a pair of opposed short sides, and a bottom wall 2. Frame-shaped peripheral wall portion 3 that protrudes upward from the peripheral edge portion, and an overhang portion 4 that protrudes from the entire peripheral region of the upper edge portion of the peripheral wall portion 3 toward the outer peripheral direction of the peripheral wall portion 3, and these are integrated by vacuum forming Is formed. In the present embodiment, the box container 1 is made of polyethylene.

  The peripheral wall portion 3 extends upward from the front side wall portion 11 and the rear side wall portion 12 respectively extending upward from the opposing long side portions of the bottom wall portion 2 and from the short side portion opposing to the bottom wall portion 2. The left side wall part 13 and the right side wall part 14 are provided. Moreover, the surrounding wall part 3 (each side wall part 11, 12, 13, 14) is inclining and extending to the outer peripheral side of the surrounding wall part 3 toward the upper direction on account of die cutting. In addition, each side part of the bottom wall part 2 does not necessarily extend in a straight line, but an immersion part 7 that is recessed on the inner peripheral side of the bottom wall part 2 is formed at a predetermined position and is uneven (FIG. 4). Etc.). For this reason, each of the side wall portions 11, 12, 13, and 14 extending upward from the side portions of the bottom wall portion 2 is not flat, and has a step portion 8 that extends continuously up and down continuously with the immersion portion 7. Thus, an uneven shape is formed (see FIG. 2 and the like). Thereby, the intensity | strength of the side wall parts 11, 12, 13, and 14 is raised. In this embodiment, the front side wall part 11 and the rear side wall part 12 correspond to the first side wall part, and the left side wall part 13 and the right side wall part 14 correspond to the second side wall part.

  The overhanging portion 4 includes an extension portion 21 extending horizontally from the upper edge portion of each side wall portion 11, 12, 13, 14 toward the outer peripheral direction of the peripheral wall portion 3, and downward from the tip edge of the extension portion 21. And a flange portion 23 that horizontally protrudes from the end edge of the folded portion 22 toward the outer circumferential direction of the peripheral wall portion 3. Note that the folded portion 22 extends slightly inclined toward the outer peripheral side of the peripheral wall portion 3 toward the lower side for convenience of die cutting.

  Further, in the projecting portion 4, the portion formed corresponding to the left side wall portion 13 and the right side wall portion 14 is recessed on the inner peripheral side of the peripheral wall portion 3 at the center position in the lateral width direction of each side wall portion 13, 14. A recess 9 is formed. Incidentally, in the present embodiment, the immersing portion 7 is formed at the center position of the short side portion of the bottom wall portion 2, and the stepped portion 8 is formed on the side wall portions 13 and 14 so as to extend up and down continuously with the immersing portion 7. A recess 9 is formed corresponding to the stepped portion 8. For this reason, the extension length of the extension part 21 in the recessed part 9 is not shortened compared with other parts, and the extension length of the extension part 21 is ensured to the same extent as another part. Therefore, for example, even if a plurality of box-shaped containers 1 are stored without gaps around them, it is possible to lift the box-shaped container 1 by inserting a hand into the concave portion 9 and placing a finger on the back surface of the extending portion 21. In addition, also in the inside of the recessed part 9, the folding | turning part 22 and the flange part 23 are continuously extended.

  As shown in FIG. 5, the flange portion 23 (hereinafter referred to as the front flange portion 31) formed corresponding to the front side wall portion 11 is the left end of the peripheral wall portion 3 when the front side wall portion 11 is viewed from the front. A first lower side 31a extending horizontally from the right side to the right side, a first oblique side 31b extending obliquely upward from the right end of the first lower side 31a, and a right side from the right end of the first oblique side 31b to the right A first upper side portion 31c extending to the right side, a second oblique side portion 31d extending obliquely downward from the right end portion of the first upper side portion 31c to the right side, and a second lower side extending horizontally from the right end portion of the second oblique side portion 31d to the right side. Part 31e, a third oblique side part 31f extending obliquely upward from the right end part of the second lower side part 31e, and a second part extending horizontally from the right end part of the third oblique side part 31f to the right end part of the peripheral wall part 3. 2 upper side portions 31g.

  As shown in FIG. 6, the flange portion 23 (hereinafter referred to as the rear flange portion 32) formed corresponding to the rear side wall portion 12 is the left end of the peripheral wall portion 3 when the rear side wall portion 12 is viewed from the front. A first upper side portion 32a extending horizontally from the right side to the right side, a first oblique side portion 32b extending obliquely downward from the right end portion of the first upper side portion 32a, and a right side portion extending horizontally from the right end portion of the first oblique side portion 32b. A first lower side portion 32c extending to the right, a second oblique side portion 32d extending obliquely upward from the right end portion of the first lower side portion 32c, and a second upper side extending horizontally from the right end portion of the second oblique side portion 32d to the right side. A portion 32e, a third oblique side portion 32f extending downward from the right end portion of the second upper side portion 32e to the right side, and a second extending horizontally from the right end portion of the third oblique side portion 32f to the right end portion of the peripheral wall portion 3. 2 lower side portions 32g.

  As shown in FIG. 7, a flange portion 23 (hereinafter referred to as a left flange portion 33) formed corresponding to the left wall portion 13 is an end on the left side of the peripheral wall portion 3 when the left wall portion 13 is viewed from the front. A first lower side portion 33a extending horizontally from the right side to the right side, a first oblique side portion 33b extending obliquely upward from the right end portion of the first lower side portion 33a, and a right end portion of the first oblique side portion 33b to the concave portion 9 A first upper side portion 33c extending horizontally, a second lower side portion 33d extending horizontally from the right end of the peripheral wall portion 3 to the left side, and a second extending obliquely upward from the left end portion of the second lower side portion 33d to the left side. The oblique side 33e, the second upper side 33f extending horizontally from the left end of the second oblique side 33e to the recess 9, and the right end of the first upper side 33c to the left end of the second upper side 33f A recess corresponding portion 33g (see FIG. 3) extending horizontally along the side surface; It is provided. Note that the left flange portion 33 has a symmetrical shape. Further, the first lower side portion 33 a of the left flange portion 33 is connected to the second lower side portion 32 g of the rear flange portion 32, and the second lower side portion 33 d of the left flange portion 33 is connected to the first lower side portion 31 a of the front flange portion 31. It is connected with.

  As shown in FIG. 8, a flange portion 23 (hereinafter referred to as a right flange portion 34) formed corresponding to the right side wall portion 14 is an end on the left side of the peripheral wall portion 3 when the right side wall portion 14 is viewed from the front. A first upper side portion 34a extending horizontally from the right side to the right side, a first oblique side portion 34b extending obliquely downward from the right end portion of the first upper side portion 34a, and a right end portion of the first oblique side portion 34b to the recess 9 A first lower side portion 34c extending horizontally, a second upper side portion 34d extending horizontally from the right end of the peripheral wall portion 3 to the left side, and a second inclined extending downward from the left end portion of the second upper side portion 34d to the left side. The oblique side 34e, the second lower side 34f extending horizontally from the left end of the second oblique side 34e to the recess 9, and the right end of the first lower side 34c to the left end of the second lower side 34f A recess-corresponding portion 34g (see FIG. 3) extending horizontally along the side surface; It is provided. The right flange portion 34 has a left-right symmetrical shape. Further, the first upper side portion 34 a of the right flange portion 34 is connected to the second upper side portion 31 g of the front flange portion 31, and the second upper side portion 34 d of the right flange portion 34 is connected to the first upper side of the rear flange portion 32. It is connected to the portion 32a.

  In addition, all the upper side parts and lower side parts of each flange part 31, 32, 33, 34 are set to the same height position.

  In the present embodiment, as shown in FIG. 5 (FIG. 6), when the front flange portion 31 and the rear flange portion 32 are projected horizontally on the virtual vertical plane, the second hypotenuse of the front flange portion 31. The part 31d and the third oblique side part 32f of the rear flange part 32 intersect so that the third oblique side part 31f of the front flange part 31 and the second oblique side part 32d of the rear flange part 32 intersect.

  Further, as shown in FIG. 7 (FIG. 8), when the left flange portion 33 and the right flange portion 34 are projected horizontally on the virtual vertical plane, the first oblique side portion 33b of the left flange portion 33 and the right flange The second oblique side portion 34e of the portion 34 intersects, and the second oblique side portion 33e of the left flange portion 33 and the first oblique side portion 34b of the right flange portion 34 extend so as to intersect.

  Furthermore, the front edge part 31 of the front flange part 31 and the rear flange part 32 (peripheral wall part 3 outer peripheral side edge) exist in the same virtual plane each extended in a perpendicular direction (refer FIG. 3 etc.). ). Moreover, the protrusion direction front end edge of the site | parts except the recessed part corresponding parts 33g and 34g among the left flange part 33 and the right flange part 34 exists on the same virtual plane each extended in a perpendicular direction. That is, the oblique sides of the flange portions 31, 32, 33, 34 are configured not to be inclined in the inner and outer peripheral directions of the peripheral wall portion 3. In addition, each hypotenuse part of each flange part 31, 32, 33, 34 is configured such that the length of the tip edge in the horizontal direction is longer than the length in the vertical direction.

  Next, the manufacturing process of the box-type container 1 will be described. First, a 3 to 6 mm sheet-shaped polyethylene softened by heating and a male mold (or a female mold) are arranged opposite to each other, and a gap between the polyethylene sheet and the male mold is evacuated to make the polyethylene sheet a male mold. Adhere to each other and mold the center of the polyethylene sheet into the desired box shape. That is, the bottom wall part 2, the peripheral wall part 3, the extension part 21, and the folded part 22 are formed by bringing the polyethylene sheet into close contact with the male mold. And after cooling a polyethylene sheet, while separating a male type | mold from a polyethylene sheet, a polyethylene sheet is cut | disconnected along the peripheral part of a shaping | molding part with a trimmer (a punching apparatus is also possible), and a shaping | molding part is cut off from a polyethylene sheet. The flange portion 23 is formed by cutting the polyethylene sheet along the peripheral edge of the molded portion so that the molded portion of the polyethylene sheet remains at a predetermined length on the edge of the folded portion 22. Become. As described above, the box-type container 1 is obtained.

  As described above in detail, according to the present embodiment, the front flange portion 31 and the rear flange portion 32 that are formed corresponding to the front wall portion 11 and the rear wall portion 12 that are opposed to each other are placed on a virtual vertical plane. On the other hand, when projected horizontally, both flange portions 31, 32 intersect each other. Further, when the left flange portion 33 and the right flange portion 34 formed respectively corresponding to the opposed left side wall portion 13 and right side wall portion 14 are projected horizontally on the virtual vertical plane, both flange portions 33 are provided. , 34 intersect each other.

  Accordingly, when the plurality of box-shaped containers 1 are continuously conveyed by the conveyor, the box-shaped containers 1 are arranged in the same direction so that the short sides of the box-shaped containers 1 extend along the conveying direction of the conveyor. The front flange part 31 of one box-type container 1 and the rear flange part 32 of the other box-type container 1 of the box-type containers 1 adjacent to each other along the conveying direction of the conveyor are opposed to each other. Become. When the box containers 1 adjacent to each other in the conveying direction of the conveyor come into contact with each other, the second oblique side portion 31d and the third oblique side portion 31f of the front flange portion 31 and the third oblique side portion 32f and the second oblique side portion 32f of the rear flange portion 32 are used. The two oblique sides 32d come into contact with each other so as to intersect.

  Further, when the plurality of box-shaped containers 1 are continuously conveyed by the conveyor, the box-shaped containers 1 are arranged in the same direction so that the long sides of the box-shaped containers 1 extend along the conveying direction of the conveyor. The left flange part 33 of one box-type container 1 and the right flange part 34 of the other box-type container 1 of the box-type containers 1 adjacent to each other along the conveying direction of the conveyor are opposed to each other. Become. When the box containers 1 adjacent to each other in the conveying direction of the conveyor come into contact with each other, the first oblique side portion 33b and the second oblique side portion 33e of the left flange portion 33, and the second oblique side portion 34e and the second oblique side portion 34e of the right flange portion 34. One oblique side portion 34b comes into contact with each other so as to intersect.

  For this reason, the situation where the flange part 23 of one box-type container 1 among the box-type containers 1 adjacent to each other can sink under the flange part 23 of the other box-type container 1 can be prevented. Therefore, it is possible to prevent the flange portions 23 of the box-shaped containers 1 adjacent to each other from climbing up, and the articles accommodated in the box-shaped container 1 may shift or move due to the climbing of the flange portions 23. It is possible to solve problems such as jumping out of the box, or the box-shaped container 1 itself shifting and moving (in some cases, deviating from the conveyor). As a result, it is possible to obtain a box-type container 1 that can stably convey the stored articles on a conveyor.

  In addition, the overhanging portion 4 includes an extension portion 21 and a turn-up portion 22, and the height of the peripheral wall portion 3 is not changed partially by changing the extension length of the turn-up portion 22 (the peripheral wall portion 3 The height and inclination angle of the flange portion 23 can be changed without making the upper edge portion of the upper and lower portions uneven. Accordingly, it is possible to avoid a situation in which the height of the box-shaped container 1 or the narrowing of the inner space for storing articles is reduced due to the partial change in the height of the peripheral wall 3. it can. Moreover, the flange part 23 which protrudes orthogonally to the folding | turning part 22 is provided in the front-end edge of the folding | turning part 22, and raises the intensity | strength of the outer edge (lower end edge of the folding | turning part 22) of the overhang | projection part 4. It is possible to make it difficult to cause breakage or the like at the same site.

  In the present embodiment, as described above, when the box-shaped containers 1 adjacent to each other in the conveying direction of the conveyor come into contact with each other, the flange portions 23 of the two box-shaped containers 1 intersect at two points. It can be made to contact. For this reason, it is easy to maintain the balance when the box-shaped containers 1 adjacent to each other contact each other. For example, the box-shaped container 1 is centered on the contact portion as in the case where the flange portions 23 contact at one point. It is possible to prevent a situation such as rotational displacement. Further, by increasing the number of places that come into contact with each other, the impact at the time of contact can be dispersed, and damage to the flange 23 can be suppressed.

  Furthermore, in this embodiment, when the box-shaped container 1 is transported by a conveyor, even if either the long side or the short side of the box-shaped container 1 is installed along the transport direction, the climbing between the flange portions 23 is prevented. The above-described effects are achieved. Therefore, the direction in which the box-shaped container 1 is installed on the conveyor can be freely selected, and the versatility of the box-shaped container 1 can be expanded.

  Moreover, the folding | turning part 22 of the overhang | projection part 4 is inclined and formed in the outer peripheral side of the surrounding wall part 3 toward the downward direction on account of shaping | molding. For this reason, for example, when the protrusion length of the flange portion 23 that protrudes from the folded portion 22 to the outer peripheral side of the peripheral wall portion 3 is configured to be the same in any part, the leading edge of each oblique side portion of the flange portion 23 (the oblique side portion) The edge on the outer peripheral side of the peripheral wall 3 is inclined downward toward the outer peripheral side of the peripheral wall 3. However, in this case, when the adjacent box-type containers 1 collide with each other, the flange portion 23 of one box-type container 1 is guided upward to the oblique side portion of the flange portion 23 of the other box-type container 1. There is a concern that the one box-shaped container 1 is lifted up.

  On the other hand, according to the present embodiment, each front end edge of the front flange portion 31, the rear flange portion 32, the left flange portion 33, and the right flange portion 34 (recesses corresponding to the left flange portion 33 and the right flange portion 34). 33g and 34g) are configured to exist on the same virtual plane extending in the vertical direction. For this reason, even if the oblique sides of the flange portions 23 of the box-shaped containers 1 adjacent to each other collide with each other, it is possible to reliably avoid the situation where the box-shaped container 1 is lifted.

  In addition, each oblique side portion of the flange portion 23 is configured such that the length of the tip edge in the horizontal direction is longer than the length in the vertical direction. For this reason, the length of the hypotenuse part of the flange part 23 in the direction orthogonal to the conveyance direction can be made as long as possible while suppressing the enlargement of the overhanging part 4. Therefore, when the box-shaped containers 1 adjacent to each other are in contact with each other in a state of being relatively displaced in a direction orthogonal to the transport direction, the contact position (the position of the oblique side) between the flange portions 23 is shifted. Thus, it is possible to suppress a situation in which the flange portions 23 do not come into contact with each other so that the flange portions 23 cross each other (the oblique sides no longer come into contact with each other).

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, when the box-shaped container 1 is installed in the same direction with respect to the conveyor, the above-described effect is achieved, and when every other box-shaped container 1 is rotated 180 degrees and installed, Although the said effect is not show | played, you may comprise so that the said effect may be show | played, when every other box-type container 1 is rotated 180 degree | times and installed. Hereinafter, exemplary embodiments will be described with reference to FIGS. 9 and 10. FIG. 9 is a side view of the box-shaped container 1 as viewed from the front wall portion 11 side, and FIG. 10 is a side view of the box-shaped container 1 as viewed from the left wall portion 13 side. In addition, about the structure similar to the said embodiment, while omitting the detailed description for convenience of explanation, it demonstrates using the member name and member number similar to the said embodiment fundamentally.

  As shown in FIG. 9, the front flange portion 51 includes a first upper side portion 51 a extending horizontally from the left end portion of the peripheral wall portion 3 to the right side when the front side wall portion 11 is viewed in front, and a first upper side portion 51 a. A first oblique side portion 51b extending downward and inclined from the right end portion to the right side, a first lower side portion 51c extending horizontally from the right end portion of the first oblique side portion 51b to the right side, and a right end portion of the first lower side portion 51c from the right end portion to the right side. A second oblique side portion 51d extending obliquely upward, a second upper side portion 51e extending horizontally from the right end portion to the right side of the second oblique side portion 51d, and a downward inclination rightward from the right end portion of the second upper side portion 51e. A third oblique side portion 51f that extends and a second lower side portion 51g that horizontally extends from the right end portion of the third oblique side portion 51f to the right end portion of the peripheral wall portion 3 are provided.

  Further, the rear flange portion 52 indicated by a broken line in FIG. 9 has the same shape as the front flange portion 51 when the rear side wall portion 12 is viewed from the front. That is, when the front flange portion 51 and the rear flange portion 52 are projected horizontally with respect to the virtual vertical plane, the rear flange portion 52 has a shape obtained by inverting the front flange portion 51, and the front flange portion 31 and the rear flange portion are formed. The part 32 intersects at three points on the hypotenuse. By the way, in this embodiment, when the front flange portion 51 and the rear flange portion 52 are projected horizontally with respect to the virtual vertical plane, the front flange portion 51 and the rear flange portion 52 do not overlap except for the oblique side portion. It has become.

  As shown in FIG. 10, the left flange portion 53 includes a first lower side portion 53a extending horizontally from the left end portion of the peripheral wall portion 3 to the right side when the left wall portion 13 is viewed in front, and a first lower side portion 53a. A first oblique side portion 53b extending obliquely upward from the right end portion to the right side, a first upper side portion 53c extending horizontally from the right end portion of the first oblique side portion 53b to the concave portion 9, and a left side from the right end portion of the peripheral wall portion 3 A second upper side portion 53d extending horizontally to the left side, a second oblique side portion 53e extending obliquely downward from the left end portion of the second upper side portion 53d, and a horizontal portion extending from the left end portion of the second oblique side portion 53e to the recess 9. A second lower side portion 53f and a concave portion corresponding portion 53g extending along the inner surface of the concave portion 9 from the right end portion of the first upper side portion 53c to the left end portion of the second lower side portion 53f are provided.

  In addition, the concave portion corresponding part 53g of the present aspect example includes a first depth portion 61 extending horizontally from the right end portion of the first upper side portion 53c toward the inner peripheral side of the peripheral wall portion 3, and a left end portion of the second lower side portion 53f. The 2nd depth part 62 extended horizontally toward the inner peripheral side of the surrounding wall part 3, and the front-end | tip parts of the 1st depth part 61 and the 2nd depth part 62 are connected, and the connection extended in parallel with the corresponding left side wall part 13 Part 63. Further, the connecting portion 63 extends horizontally at a portion including the central portion in the longitudinal direction, and extends obliquely upward from the left end portion of the horizontal portion 65 to the left, and is connected to the first depth portion 61. A first inclined portion 66 and a second inclined portion 67 extending obliquely downward from the right end portion of the horizontal portion 65 and connected to the second depth portion 62.

  Furthermore, the right flange portion 54 indicated by a broken line in FIG. 10 has the same shape as the left flange portion 53 when the right wall portion 14 is viewed from the front. That is, when the left flange portion 53 and the right flange portion 54 are projected horizontally on the virtual vertical plane, the right flange portion 54 has a shape obtained by inverting the left flange portion 53, and the left flange portion 33 and the right flange portion The portion 34 intersects at two points on the hypotenuse. Further, when the left flange portion 53 and the right flange portion 54 are projected horizontally on the virtual vertical plane, the horizontal portion 65 of the concave portion corresponding portion 53g of the left flange portion 33 and the concave portion corresponding portion 54g of the right flange portion 34 are used. The horizontal portion 65 is overlapped. Incidentally, in the present embodiment, when the left flange portion 53 and the right flange portion 54 are projected horizontally on the virtual vertical plane, the left flange portion 33 and the right flange portion 34 are the oblique sides (and the horizontal portion 65). It is the structure which does not overlap except.

  The inclined portions 66 and 67 may be provided not in the connecting portion 63 but in the first depth portion 61 and the second depth portion 62. Further, the height of the horizontal portion 65 may be adjusted to one of the first depth portion 61 or the second depth portion 62.

  Even in the case of adopting the above configuration, the box-shaped containers 1 adjacent to each other along the conveying direction of the conveyor can be installed such that the front flange portion 51 and the rear flange portion 52 face each other, or the left flange When installed so that the portion 53 and the left flange portion 53 face each other, when the box-shaped containers 1 come into contact with each other, the flange portions 23 cross and come into contact with each other. Therefore, the same operation effect as the above-mentioned embodiment is produced.

  Further, the front flange portion 51 and the rear flange portion 52 are reversed from each other, and the left flange portion 53 and the rear flange portion 52 are reversed from each other. For this reason, the box-shaped containers 1 adjacent to each other along the conveying direction of the conveyor are installed such that the front flange portions 51 (rear flange portions 52) face each other, or the left flange portions 53 (right flange portions) 54), when the box-shaped containers 1 are in contact with each other, the flange portions 23 intersect and come into contact with each other. Therefore, even when the box-type container 1 is installed in the opposite direction (unintentionally) with respect to the conveyor, the same effects as those of the above-described embodiment can be obtained. In particular, in the present embodiment example, when the flange portion 23 is projected horizontally with respect to the virtual vertical plane, the flange portions 23 do not overlap with each other except the hypotenuse portion. It can prevent more reliably.

  In addition, since the inclined portion is provided in the flange portion 23 as described above, when the box-shaped container 1 is transported while holding the overhanging portion 4 by hand, the portion that becomes the handle is inclined or the handle of the right hand is held. There is a concern that the height position may be different between the part that becomes the left hand and the part that becomes the handle of the left hand. In this case, it may be difficult to lift the box-shaped container 1 or the balance of the box-shaped container 1 may be easily lost when the box-shaped container 1 is lifted.

  On the other hand, according to the present embodiment example, the flange portion 23 is provided with the horizontal portion 65 extending in parallel with the side wall portions 13 and 14 corresponding to the inner side of each concave portion 9, and the left flange portion 53. When the right flange portion 54 is projected horizontally on the virtual vertical plane, the horizontal portion 65 of the concave portion corresponding portion 53g of the left flange portion 33 and the horizontal portion 65 of the concave portion corresponding portion 54g of the right flange portion 34 are Overlapping configuration. For this reason, the said malfunction can be wiped off. Moreover, even if adjacent box-shaped containers 1 come into contact with each other, the flange portions 23 (the connecting portions 63 including the horizontal portions 65) formed inside the recess 9 do not come into contact with each other. For this reason, it is possible to avoid a situation in which the horizontal portions 65 come into contact with each other and easily get on.

  (B) In the above embodiment, when the front flange portion 31 and the rear flange portion 32 are horizontally projected onto the virtual vertical plane, both the flange portions 31 and 32 are configured to intersect each other, In the case where the left flange portion 33 and the right flange portion 34 are projected horizontally with respect to a virtual vertical plane, the flange portions 33 and 34 are configured to intersect with each other, but at least one of the configurations is provided. It only has to be. Further, only when the plurality of box-shaped containers 1 are arranged on the conveyor by rotating every other 180 degrees along the conveying direction of the conveyor, when the adjacent box-shaped containers 1 come into contact with each other, the flange portion 23. You may comprise so that it may mutually contact | abut. As an example of the embodiment, for example, in the configuration of (a), the rear flange portion 52 is configured to have a shape in which the front flange portion 51 is reversed when the rear side wall portion 12 is viewed in front (the front flange portion 31 and the rear side). In the case where the flange portion 32 is projected horizontally with respect to the virtual vertical plane, the entire area of the front flange section 51 and the entire area of the rear flange section 52 overlap).

  (C) Further, the size and shape of the box-shaped container 1 are not particularly limited, and for example, it may be configured in a basin shape having a shallow bottom (the height of the peripheral wall portion 3 is low), or the bottom wall portion. 2 may be square, hexagonal, or octagonal. Further, instead of or in addition to the concave portions 9 formed corresponding to the left and right side wall portions 13, 14, the concave portions 9 may be formed corresponding to the front and rear side wall portions 11, 12. Further, the recess 9 can be omitted. In addition, the immersion portion 7 of the bottom wall portion 2 and the step portions 8 of the side wall portions 11, 12, 13, and 14 may be omitted.

  Moreover, in the said embodiment, when the box containers 1 adjacent to each other come into contact with each other, the oblique sides of the flange portion 23 come into contact with each other. You may employ | adopt a structure so that a hypotenuse part (intermediate position) may cross.

  (D) In the said embodiment, you may provide a mark on the upper surface of the extension part 21 corresponding to the predetermined | prescribed side wall part 11,12,13,14. For example, in the above-described embodiment, when a plurality of box-shaped containers 1 are arranged on the conveyor by rotating every other 180 degrees along the conveying direction of the conveyor, the above-described effects of preventing the flange portions 23 from riding on each other are obtained. Not played. For this reason, it is necessary to place the box-shaped container 1 on the conveyor while confirming the shape of the flange portion 23, and there is a concern that workability may be reduced. On the other hand, by providing a mark on the upper surface of the extension portion 21, it is possible to instantaneously determine the correct installation direction of the box-type container 1 without checking the shape of the flange portion 23. In addition, when the conveyance of the box-shaped container 1 is automated, the accurate installation direction of the box-shaped container 1 can be grasped by detecting the mark with a sensor. Therefore, it is possible to suppress a situation in which the direction in which the box-type container 1 is installed is mistaken, and to achieve a dramatic improvement in workability.

  (E) In the above embodiment, for example, when the left flange portion 33 and the right flange portion 34 (or the front flange portion 31 and the rear flange portion 32) are projected horizontally on the virtual vertical plane, the left You may comprise so that the flange part 33 and the right flange part 34 (or the front flange part 31 and the rear flange part 32) may not overlap at all (it is spaced apart in the whole area up and down). In this case, even if adjacent box-shaped containers 1 are in contact with each other during conveyance on the conveyor, the flange portions 23 are not in contact with each other.

  However, when the box-shaped containers 1 adjacent to each other are installed so as to face each other, the flange portion 23 of one box-shaped container 1 is located below the flange portion 23 of the other box-shaped container 1, and the one box-shaped container 1 When 1 is lifted, the flange portions 23 come into contact with each other, which may cause various problems. For this reason, as in the above-described embodiment, it is desirable that the flange portions 23 are not vertically opposed to each other even when the box-type containers 1 adjacent to each other are installed to face each other. In addition, even if it employ | adopts the structure where the flange part 23 opposes up and down when mutually adjoining the box-shaped container 1, if it lifts from the box-shaped container 1 with the flange part 23 up, the above-mentioned The trouble can be avoided. However, since it is necessary to confirm the positional relationship of the flange portion 23 when the box-shaped container 1 is installed at the storage location or carried out from the storage location, at least one pair of side wall portions to which the above configuration is applied is provided. Is desirable.

  (F) In the embodiment described above, the box-shaped container 1 is made of polyethylene, but may be made of other resin materials such as polypropylene, PET, and polyamide.

DESCRIPTION OF SYMBOLS 1 ... Box-shaped container, 2 ... Bottom wall part, 3 ... Perimeter wall part, 4 ... Overhang | projection part, 9 ... Recessed part, 11 ... Front side wall part, 12 ... Rear side wall part, 13 ... Left side wall part, 14 ... Right side wall part, DESCRIPTION OF SYMBOLS 21 ... Extension part, 22 ... Folding part, 23 ... Flange part, 31 ... Front flange part, 32 ... Rear flange part, 33 ... Left flange part, 34 ... Right flange part, 31d, 31f, 32d, 32f, 33b, 33e, 34b, 34e ... hypotenuse.

Claims (6)

From the substantially plate-shaped bottom wall portion, a frame-shaped peripheral wall portion constituted by side wall portions extending upward from each side edge portion of the bottom wall portion, and from the entire peripheral area of the upper edge portion of the peripheral wall portion A projecting portion protruding toward the outer peripheral direction of the peripheral wall portion,
The peripheral wall portion includes at least one pair of opposite side wall portions,
The overhanging portion is
An extending part extending from the upper edge part of each side wall part toward the outer peripheral direction of the peripheral wall part;
A folded portion extending downward from the leading edge of the extending portion;
A flange portion projecting from the leading edge of the folded portion toward the outer peripheral direction of the peripheral wall portion,
In the box-shaped container in which the bottom wall portion, the peripheral wall portion, and the overhang portion are integrally formed by vacuum forming ,
Relates to the aforementioned flange portion formed to correspond to a set of said opposed pair of side wall portions even without low, seen in front of the side wall portion is the flange portion formed to correspond to at least one side wall portion corresponding The flange portion formed corresponding to one side wall portion and the flange portion formed corresponding to the other side wall portion are horizontal with respect to a virtual vertical plane. A box-shaped container in which both flange portions intersect at two or more points when projected onto the container. From the substantially plate-shaped bottom wall portion, a frame-shaped peripheral wall portion constituted by side wall portions extending upward from each side edge portion of the bottom wall portion, and from the entire peripheral area of the upper edge portion of the peripheral wall portion A projecting portion protruding toward the outer peripheral direction of the peripheral wall portion,
The peripheral wall portion includes at least one pair of opposite side wall portions,
The overhanging portion is
An extending part extending from the upper edge part of each side wall part toward the outer peripheral direction of the peripheral wall part;
A folded portion extending downward from the leading edge of the extending portion;
A flange portion projecting from the leading edge of the folded portion toward the outer peripheral direction of the peripheral wall portion,
In the box-shaped container in which the bottom wall portion, the peripheral wall portion, and the overhang portion are integrally formed by vacuum forming ,
For each of the flange portions formed to correspond to a set of said opposed pair of side wall portions even without low, provided with a slant portion extending obliquely seeing the corresponding side wall portion on the front, the flange portion And when the flange portion is horizontally projected onto the virtual vertical plane with the virtual flange portion inverted about the virtual axis extending in the vertical direction at the center portion in the lateral width direction of the corresponding side wall portion. A box-shaped container characterized in that the parts intersect at two or more points . The bottom wall portion has a substantially rectangular shape with a pair of opposed long side portions and a pair of opposed short side portions,
The peripheral wall portion includes a pair of first side wall portions extending upward from the long side portions of the bottom wall portion, and a pair of second side walls extending upward from the short side portions of the bottom wall portion. and a part,
A pair of said flange portions formed respectively to correspond to the first side wall portion of the front Symbol pair, and relates to each of the pair of the flange portions formed to correspond to the second side wall portion of the pair, one side wall portion When the flange portion formed corresponding to the other side wall portion and the flange portion formed corresponding to the other side wall portion are projected horizontally with respect to the virtual vertical plane, the two flange portions are two or more points. The box-shaped container according to claim 1, which intersects with each other. The bottom wall portion has a substantially rectangular shape with a pair of opposed long side portions and a pair of opposed short side portions,
The peripheral wall portion includes a pair of first side wall portions extending upward from the long side portions of the bottom wall portion, and a pair of second side walls extending upward from the short side portions of the bottom wall portion. and a part,
A pair of said flange portions formed respectively to correspond to the first side wall portion of the front Symbol pair, and relates to each individual flange portions of the pair of the flange portions formed to correspond to the second side wall portion of said pair, said flange And a virtual flange portion obtained by inverting the flange portion around the virtual axis extending in the vertical direction at the center portion in the horizontal width direction of the corresponding side wall portion. The box-shaped container according to claim 2, wherein the flange portions intersect at two or more points . Projecting direction leading edge of the oblique side portion, of from the upper end to the lower end lengthwise end is of claims 1 to 4, characterized in that present on the same virtual plane extending in the vertical direction according to any one Box type container. The box-shaped container according to any one of claims 1 to 5 , wherein each of the oblique sides is configured such that a length in a horizontal direction of a tip edge thereof is longer than a length in a vertical direction.

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