JP2010280425A - Box-shaped container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a box-shaped container for removing smoothly from a nested condition. <P>SOLUTION: This box-shaped container 1 structured able to be nested includes a roughly rectangular plate shaped bottom wall 2, a peripheral wall 3 extended upward from the peripheral edge of the wall 2 and an extended part 4 outwardly protruded from the total peripheral area of the top edge of the wall 3. The wall 3 includes a third and fourth sidewalls 13, 14 upwardly extended from each of the facing short sides of the wall 2 and the part 4 includes an extended part 21 extended in the outer peripheral direction from the top edge of the wall 3 and a folding back part 22 extended downward from the top end edge of the part 21. A third and fourth extended parts 33, 34 of the part 4 formed corresponding to the third and the fourth sidewalls 13, 14 are formed with a recess 25 receding toward the inner peripheral side of the part 4 at the center in the longitudinal direction. The inside of the recess 25 is provided with a flange 27 extended in the outer peripheral direction of the part 4 from the bottom edge of the part 22. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

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

  In general, a box-shaped container used for conveying an article has a substantially rectangular bottom wall part and a side wall part extending upward from the outer peripheral edge of the bottom wall part, and the article is opened from the upper opening. It is configured to take in and out. Furthermore, the box-type container has an overhanging portion that protrudes outward from the upper edge portion of the side wall portion, and while the overhanging portion improves the strength of the side wall portion, the box type container is carried by placing the hand on the overhanging portion. Can be done. In addition, the box-shaped container is inclined to the outer peripheral side of the box-shaped container with the side wall portion facing upward, and when a plurality of box-shaped containers are stacked in the same direction, nesting (most of the upper box-shaped containers are Can be accommodated inside the lower box-shaped container) (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 4-21435

  By the way, it is conceivable that the protruding portions of the box-type containers stacked one above the other are brought close to each other or brought into contact with each other in order to make the nested box-type containers compact and improve the conveyance efficiency. However, in this case, there is a possibility that a finger cannot be inserted under the overhanging portion of the upper box-shaped container. In other words, since there is no handle when the upper box container is pulled out from the lower box container, workability may be reduced.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a box-type container that can smoothly perform a drawing operation from a nested state.

  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. A substantially rectangular bottom wall,
A frame-shaped peripheral wall portion extending upward from the peripheral edge portion of the bottom wall portion;
A projecting portion projecting from the entire peripheral region of the upper edge portion of the peripheral wall portion toward the outer peripheral direction of the peripheral wall portion;
In the box-shaped container in which each of these wall portions is integrally formed by molding and opens upward,
The peripheral wall portions respectively extend upward from a pair of long side wall portions extending upward from the opposing long side portions of the bottom wall portion, and extending upward from the opposing short side portions of the bottom wall portion. A pair of short side walls connecting the side parts of the long side wall parts of
The overhanging portion includes an extending portion that extends from the upper edge portion of each side wall portion toward the outer peripheral direction of the peripheral wall portion, and a folded portion that extends downward from the leading edge of the extending portion. Prepared,
It is configured to allow nesting by stacking the box-shaped containers up and down in the same direction,
The short side protruding portion formed corresponding to the short side wall portion of the protruding portion is formed with a concave portion that is concave on the inner peripheral side of the protruding portion in the longitudinal center portion.
A box shape characterized in that a flange portion extending in the outer peripheral direction of the overhanging portion is provided inside the concave portion at a predetermined distance from the upper edge portion or the lower edge portion of the folded portion. container.

  According to the means 1, the short side protruding portion formed corresponding to the short side wall portion of the protruding portion includes the protruding portion at a position separated from the upper edge portion or the lower edge portion of the folded portion by a predetermined distance. A flange portion extending in the outer peripheral direction (for example, substantially horizontal direction) is provided. For this reason, when nesting the box-shaped container, even if the protruding part of the upper box-shaped container and the protruding part of the lower box-shaped container are close to or in contact with each other, the flange portion of the upper box-shaped container Then, the upper box-shaped container can be lifted by inserting a finger between the flange portion of the lower box-shaped container and placing the finger on the back surface of the upper flange section. Accordingly, it is possible to smoothly perform the operation of extracting the upper box-shaped container from the nested state while reducing the size of the nested box-shaped container.

  In addition, since the flange portion is provided in the concave portion, the operator does not have to project the flange portion to the outer peripheral side of the overhang portion more than the folded portion of the general portion where the concave portion is not formed. The extension length of the flange portion can be secured to such an extent that a finger can be hung. Accordingly, it is possible to suppress a situation in which the flange portion is easily damaged or the box-type container is increased in size because the flange portion protrudes larger than the general portion toward the outer peripheral side of the overhang portion.

  It should be noted that “the distance between the protruding portion of the upper box-shaped container and the protruding portion of the lower box-shaped container during nesting is 5 mm or less”. In this case, nesting efficiency can be dramatically increased. Further, “the interval between the flange portion of the upper box-shaped container and the flange portion of the lower box-shaped container at the time of nesting may be 10 mm or more”. In this case, a finger can be surely inserted between the flange portions, and the above-described effects can be more reliably achieved. Moreover, the said flange part is good also as being connected with 3 sides with respect to the inner surface of the said recessed part. In this case, as compared with the case where the flange portion is supported on one side, deformation of the flange portion can be prevented, and damage to the flange portion can be prevented.

  Mean 2. The edge of the flange portion on the outer peripheral side of the flange portion is flush with the outer surface of the folded portion of the general portion located on both sides of the portion where the recess is formed in the overhang portion, or the general portion. The box-shaped container according to means 1, wherein the box-shaped container is located on the inner peripheral side of the overhanging portion with respect to the outer side surface of the folded portion.

  According to the means 2, since the flange portion does not protrude to the outer peripheral side of the overhanging portion with respect to the folded portion of the general portion, the flange portion can be more reliably prevented from being damaged. Further, it is possible to avoid a situation in which the size of the box-type container is increased due to the flange portion protruding outside the folded portion of the general part. For example, the short sides of the box-type container are protruded from each other. The storage space can be made as small as possible when storing it in contact.

Means 3. The concave portion is formed by providing the folded portion on the inner peripheral side of the overhang portion with respect to the folded portion of the general portion located on both sides of the portion where the concave portion is formed in the overhang portion, and the flange. The portion is configured to extend from the lower edge portion of the folded portion to the outer peripheral side of the overhang portion,
The extension length of the folded portion of the recess is configured to be longer than the extended length of the folded portion of the general portion, and the flange portion is connected to the folded portion of the general portion. The box-type container according to 1 or 2.

  According to the means 3, it is possible to improve the strength of the portion of the projecting portion where the concave portion is formed. In addition, since the extended length of the folded portion of the concave portion is configured to be long, it becomes easier to place a hand on the back surface of the folded portion of the concave portion (easy to apply force), and when carrying a box-shaped container containing articles Workability can be improved.

  Means 4. The long side wall portion includes a first inclined portion having an inclination angle with respect to a vertical direction that is the same as that of the short side wall portion, and a second inclined portion that is largely inclined to the outer peripheral side of the peripheral wall portion rather than the first inclined portion. A box-shaped container according to any one of means 1 to 3, characterized by comprising:

  For example, when trying to lift a nested box-type container one by one from the top, the outer side of the lifted box-type container (mainly the bottom surface of the bottom wall) and the lower side of the box-type container There is a concern that the space formed between the side surfaces (mainly the upper surface of the bottom wall portion) will be in a negative pressure state and not only the raised box-shaped container but also the box-shaped container below it will be lifted. . In this case, when extracting the nested box-shaped container, it may be necessary to hold the lower box-shaped container by hand, resulting in a decrease in workability.

  On the other hand, according to the means 4, the long side wall portion is provided with the second inclined portion that is inclined more greatly than the short side wall portion. For this reason, when nesting box-shaped containers, the distance between the second inclined portions becomes larger than the distance between the first inclined portions of the box-shaped containers stacked one above the other. Accordingly, outside air easily enters the space formed between the upper and lower box-shaped containers from the gap between the second inclined portions, and the lower box-shaped container sticks when the upper box-shaped container is lifted. Such a situation can be prevented. As a result, it is possible to smoothly perform the operation of extracting the upper box-shaped container from the nested state.

  Means 5. The long side wall portion is a mold having different inclination angles in the vertical direction between a first forming portion for forming the first inclined portion and a second forming portion for forming the second inclined portion. The box-shaped container according to the means 4, which is formed by using an apparatus.

  According to the means 5, the box-shaped container of the means 4 can be obtained reliably.

  Means 6. Among the long side wall portions, the vicinity of both sides in the width direction connected to the short side wall portions is configured as the first inclined portion, and the central portion in the width direction is configured as the second inclined portion. The box-type container according to 4 or 5 characterized by the above.

  Generally, with respect to the long side wall portion formed along the long side portion of the bottom wall portion, molding distortion tends to occur so as to protrude toward the inner peripheral side of the peripheral wall portion at the center in the width direction. When molding distortion occurs in this way, the central part in the width direction of the side wall on the long side is located on the inner peripheral side of the peripheral wall part from both side parts in the width direction, and the boxes are stacked one above the other when nesting occurs There is a concern that the long side wall portions of the mold container are close to or in contact with each other. Due to this, there is a risk that workability may be reduced during the operation of extracting the nested box-shaped container.

  On the other hand, according to the present means 6, since the central portion in the width direction of the long side wall portion is formed to be inclined toward the outer peripheral side of the peripheral wall portion, the long side wall portion is subjected to the above-described forming distortion. Even if it occurs, it is possible to prevent a situation in which the central portion in the width direction of the long side wall portion is positioned closer to the inner peripheral side of the peripheral wall portion than both side portions in the width direction. Therefore, the operational effect of improving the workability for extracting the nested box-shaped container is more reliably achieved.

Mean 7 The box-shaped container is configured to be stacked by alternately rotating 180 degrees and stacking up and down,
A support wall for supporting the upper box container when stacking;
A support leg portion supported by the support wall portion of the lower box-shaped container when stacking;
The support leg portion is configured to be formed in a hollow shape, and includes a leg portion accommodating portion that can accommodate the support leg portion of the upper box-shaped container when nesting is performed,
Any one of means 1 to 6, wherein a step portion is provided on an outer surface of the support leg portion, and a portion of the support leg portion that is lower than the step portion is thinner than an upper portion. A box-shaped container as described in 1.

  According to the means 7, the gap between the support leg portion and the leg housing portion is increased in the stepped portion, and therefore, when the upper box-shaped container among the nested box-shaped containers is lifted, The outside air easily enters the space formed between the box-shaped containers. Therefore, when the upper box-shaped container is lifted, the space formed between the upper and lower box-shaped containers is in a negative pressure state, so that the lower box-shaped container is stuck. Can be prevented. As a result, it is possible to smoothly perform the operation of extracting the upper box-shaped container from the nested state.

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-type container. It is a perspective view of the nesting box type container. It is the sectional view on the AA line of FIG. 3 which shows the nesting box-shaped container. It is the BB sectional drawing of FIG. 3 which shows the nesting box-shaped container. It is CC sectional view taken on the line of FIG. 3 which shows the nesting box-shaped container. It is the DD sectional view taken on the line of FIG. 3 which shows the nesting box-shaped container. It is the EE sectional view taken on the line of FIG. 3 which shows the nesting box-shaped container. It is sectional drawing which shows the nesting box-shaped container in another embodiment. It is a perspective view of the box-type container in another embodiment. It is a perspective view of the box-type container in another embodiment.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIGS. 1 to 3 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 periphery of the peripheral wall portion 3, and these are integrally formed by molding Is formed. In this embodiment, the box-type container 1 is made of polypropylene. Note that through holes such as drain holes are not formed in the bottom wall portion 2 and the peripheral wall portion 3 of the present embodiment.

  The peripheral wall portion 3 extends upward from the first side wall portion 11 and the second side wall portion 12 respectively extending upward from the opposing long side portions of the bottom wall portion 2 and from the corresponding short side portion of the bottom wall portion 2. A third side wall part 13 and a fourth 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. Furthermore, the thickness of the box-shaped container 1 is substantially constant at any part, and the outer shape of the box-shaped container 1 and the inner shape of the box-shaped container 1 are substantially the same. For this reason, it is possible to nest as shown in FIG. 4 by stacking the box-shaped containers 1 in the same direction, and it is possible to increase the efficiency in collecting the box-shaped containers 1 from which the articles have been taken out to the transportation source. . In the present embodiment, the first side wall 11 and the second side wall 12 correspond to the long side wall, and the third side wall 13 and the fourth side wall 14 correspond to the short side wall.

  Further, the third side wall portion 13 and the fourth side wall portion 14 are arranged so that the support leg portion 15 that bulges to the outer peripheral side of the peripheral wall portion 3 and the box-like container 1 are alternately rotated 180 degrees and stacked vertically. And a support wall portion 16 that supports the portion 15. Specifically, with respect to the third side wall 13, third support legs 15 a are provided at both sides in the width direction (connection portions between the first side walls 11 and the second side walls 12), and from the third support legs 15 a. In addition, a third support wall portion 16 a is provided on the center side in the width direction of the third side wall portion 13. On the other hand, with respect to the fourth side wall portion 14, the fourth support wall portion 16 b is provided at a position facing the third support leg portion 15 a on both side portions in the width direction, and the fourth side wall portion 14 is located more than the fourth support wall portion 16 b. A fourth support leg portion 15b is provided at a position facing the third support wall portion 16a on the widthwise central portion side. Then, when the same box-shaped container 1 is rotated 180 degrees on the box-shaped container 1, the third support leg 15a of the upper box-shaped container 1 is the fourth support wall of the lower box-shaped container 1. The fourth support leg portion 15b of the upper box-type container 1 is supported by the third support wall portion 16a of the lower box-type container 1. Thereby, the box-shaped containers 1 containing the articles can be stacked (stacked).

  Further, the support wall portion 16 is provided below the upper edge portion (extended portion 21 described later) of the peripheral wall portion 3, and when the box-shaped container 1 is stacked, the lower portion of the upper box-shaped container 1 is It is fitted and positioned inside the lower box-shaped container 1. Thereby, the box-type container 1 can be stacked stably. Further, a support convex portion 17 (see FIG. 1) protruding upward is formed on the upper surface of the support wall portion 16, and a support concave portion 18 (FIG. 2) into which the support convex portion 17 is inserted during stacking is formed on the lower surface of the support leg portion 15. Reference) is formed. With this configuration, rattling or the like of the stacked box-type container 1 can be more reliably prevented.

  Moreover, the 3rd side wall part 13 and the 4th side wall part 14 are provided with the leg part accommodating part 19 formed by forming the inner side of each supporting leg part 15 in hollow shape, and make the box-shaped container 1 in the same direction. When stacked one above the other, as shown in FIG. 9, each supporting leg portion 15 is accommodated inside each leg portion accommodating portion 19. Thereby, it can nest by stacking the box-shaped container 1 in the same direction as mentioned above.

  Further, a step portion 20 is formed on the outer surface of each support leg portion 15, and a portion below the step portion 20 is thinner than an upper portion. With this configuration, when the box-type container 1 is nested, a relatively large gap is formed between the support leg 15 and the leg accommodating part 19 in the stepped part 20.

  Moreover, in this embodiment, the inclination angle of the 1st side wall part 11 and the 2nd side wall part 12 differs partially. Specifically, the inclination angle with respect to the vertical direction of the central portion 12a in the width direction of the second side wall portion 12 shown in FIG. 6 is larger than the inclination angle with respect to the vertical direction of the adjacent portions 12b in the width direction on both sides shown in FIG. (The same applies to the first side wall 11). That is, the second side wall part 12 (first side wall part 11) is formed so as to open most widely to the outer peripheral side of the peripheral wall part 3 in the central part in the width direction. As a result, when the box-shaped container 1 is nested, the gap between the adjacent portions 12b in the width direction on both sides of the second side wall part 12 (first side wall part 11) of the box-shaped container 1 stacked vertically (see FIG. 5). ) Is larger in the gap (see FIG. 6) between the central portions 12a in the width direction of the second side wall portion 12 (first side wall portion 11). In addition, regarding the third side wall portion 13 and the fourth side wall portion 14, the inclination angle is constant in any part. Furthermore, the inclination angles of the first side wall part 11 and the second side wall part 12 in the vicinity of both sides (12b) in the width direction are the same as the inclination angles of the third side wall part 13 and the fourth side wall part 14. In the present embodiment, the portions in the vicinity of both side portions (12b) in the width direction of the first sidewall portion 11 and the second sidewall portion 12 correspond to first inclined portions, and the width direction centers of the first sidewall portion 11 and the second sidewall portion 12 are the same. The part (12a) corresponds to a second inclined part.

  In addition, as for the metal mold apparatus (not shown) which forms the box-type container 1, the site | part (2nd shaping | molding part) which shape | molds the width direction center part of the 1st side wall part 11 (2nd side wall part 12) with respect to a perpendicular direction. The portion (first molding portion) that is inclined 10 degrees toward the outer peripheral side of the peripheral wall portion 3 and forms the vicinity of both sides in the width direction of the first side wall portion 11 (second side wall portion 12) is the peripheral wall with respect to the vertical direction. It is inclined 9 degrees toward the outer peripheral side of the part 3. That is, the inclination angle of the central portion in the width direction of the first side wall portion 11 (second side wall portion 12) with respect to the vertical direction is about 10 degrees, and in the vicinity of both sides in the width direction of the first side wall portion 11 (second side wall portion 12). The inclination angle of the part is about 9 degrees. In the present embodiment, the angle between the central portion in the width direction of the first side wall portion 11 (second side wall portion 12) and both side portions gradually changes, but the width is set so that a step is formed. You may change the angle of a direction center part, and the angle of both sides.

  The overhanging portion 4 includes an extension portion 21 that extends 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 a tip edge of the extension portion 21. And a folded portion 22 extending downward. 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.

  Of the overhanging portion 4, a portion formed corresponding to the third side wall portion 13 (hereinafter referred to as the third overhanging portion 33) and a portion formed corresponding to the fourth side wall portion 14 (hereinafter referred to as the 4 is referred to as an overhang portion 34), and a recess 25 is formed on the inner peripheral side of the overhang portion 4 at the longitudinal center position. The recessed portion 25 has a folded portion 22 that is longer than the portion of the third projecting portion 33 and the fourth projecting portion 34 where the recessed portions 25 on both sides of the recessed portion 25 are not formed (hereinafter referred to as a general portion 24). In addition to being formed on the inner peripheral side, it is formed by providing connecting portions 26 that connect both sides of the folded portion 22 (22a) of the recess 25 and both sides of the folded portion 22 (22b) of the general portion 24. . In the present embodiment, the third projecting portion 33 and the fourth projecting portion 34 correspond to the short side projecting portion.

  The recess 25 is formed with a flange portion 27 that extends horizontally from the leading edge of the folded portion 22a toward the outer periphery of the overhang portion 4. Both side portions of the flange portion 27 are connected to the connecting portion 26. Furthermore, the thickness of the flange portion 27 is the same as the thickness of other portions such as the extension portion 21. That is, the flange portion 27 is provided at a position separated from the upper edge portion of the folded portion 22 (22a) of the recess 25 by substantially the same distance as the extension length of the folded portion 22 (22a). Accordingly, when the box-shaped container 1 is nested, a gap is formed between the flange portion 27 of the upper box-shaped container 1 and the flange portion 27 of the lower box-shaped container 1 as shown in FIG. It will be. Further, the front end edge of the flange portion 27 is flush with the outer surface of the folded portion 22 (22b) of the general portion 24.

  Further, the extension length of the folded portion 22 (22a) of the concave portion 25 is configured to be longer than the extended length of the folded portion 22 (22b) of the general portion 24, and the flange portion 27 is formed of the folded portion 22 (22b) of the general portion 24. ). In the present embodiment, at the time of nesting, the lower edge portion of the folded portion 22 (22b) of the general portion 24 of the upper box-shaped container 1 and the folded portion 22 (22b) of the general portion 24 of the lower box-shaped container 1 are used. The distance between the upper edge portion (extension portion 21) of the upper portion is about 5 mm. At the time of nesting, the lower edge portion of the folded portion 22 (22a) of the recessed portion 25 of the upper box-shaped container 1 and the upper edge portion of the folded portion 22 (22a) of the recessed portion 25 of the lower box-shaped container 1 ( The distance between the extension part 21) is about 1 mm. In addition, a portion of the folded portion 22 (22 b) of the general portion 24 that is connected to the concave portion 25 is inclined downward toward the flange portion 27 and connected to the flange portion 27. Thereby, the rigidity of the flange portion 27 can be increased, and deformation or breakage of the flange portion 27 can be prevented.

  In the vicinity of the four corners of the box-shaped container 1, corner ribs 41 projecting downward from the extending portion 21 of the overhang portion 4 are provided. In the present embodiment, when the box-shaped container 1 is nested, the corner rib 41 of the upper box-shaped container 1 is supported in contact with the upper surface of the extension portion 21 of the lower box-shaped container 1. Basically, the box-type containers 1 nested in other parts do not come into contact with each other.

  Further, triangular reinforcing ribs 42 are provided on the lower surface of the support wall portion 16 between the side walls 13 and 14 and the outer surface. The reinforcing rib 42 increases the rigidity of the support wall portion 16. Further, since the reinforcing ribs 42 are formed in a triangular shape, as shown in FIG. 8, the reinforcing ribs 42 come into contact with the overhanging portions 4 (extending portions 21 and the like) of the lower box-type container 1 during nesting. It is configured not to.

  In addition, a label sticking portion 44 is formed on the upper surface of the extension portion 21 of the third and fourth overhang portions 33 and 34. The label attaching portion 44 is configured to be one step lower than the upper surface of the extending portion 21 and is subjected to a texture process. Thereby, while the damage etc. of the label stuck on the label sticking part 44 are suppressed, a label can be peeled off comparatively easily.

  As described above in detail, according to the present embodiment, the third overhanging portion 33 and the fourth overhanging portion 34 formed corresponding to the third side wall portion 13 and the fourth side wall portion 14 of the overhanging portion 4 A concave portion 25 that is concave is provided on the inner peripheral side of the overhang portion 4, and the concave portion 25 is provided with a flange portion 27 that extends in a substantially horizontal direction from the lower edge portion of the folded portion 22 (22 a) constituting the concave portion 25. It has been. For this reason, even when the box-shaped container 1 is nested, even if the protruding part 4 of the upper box-shaped container 1 and the protruding part 4 of the lower box-shaped container 1 are close to or in contact with each other, the upper box The upper box-shaped container 1 can be lifted by inserting a finger between the flange part 27 of the mold container 1 and the flange part 27 of the lower box-shaped container 1 and putting the finger on the back surface of the upper flange part 27. it can. Accordingly, it is possible to smoothly perform the operation of extracting the upper box-shaped container 1 from the nested state while reducing the size of the nested box-shaped container 1.

  Further, since the flange portion 27 is provided in the recessed portion 25, the flange portion 27 is disposed on the outer peripheral side of the protruding portion 4 rather than the folded portion 22 (22 b) of the general portion 24 in which the recessed portion 25 is not formed. Even if it does not project greatly, the extension length of the flange portion 27 can be secured to such an extent that the operator's finger can be hooked. In particular, in this embodiment, the front end edge of the flange portion 27 is flush with the outer surface of the folded portion 22 (22b) of the general portion 24. For this reason, when the flange part 27 protrudes to the outer peripheral side of the overhang | projection part 4 rather than the general part 24, the flange part 27 becomes easy to be damaged or the situation where the enlargement of the box-type container 1 is caused is suppressed. be able to.

  In addition, the flange portion 27 is connected to the folded portion 22 (22 a) and the connecting portion 26 that constitute the recess 25 on three sides. For this reason, compared with the case where the flange part 27 is supported by one side (it is connected only with respect to the folding | turning part 22a), a deformation | transformation of the flange part 27 can be prevented and damage to the flange part 27 is prevented. be able to.

  Further, the extension length of the folded portion 22 a of the recess 25 is configured to be longer than the extended length of the folded portion 22 b of the general portion 24. Further, the flange portion 27 is connected to the folded portion 22 b of the general portion 24. For this reason, the intensity | strength of the site | part in which the recessed part 25 was formed among the overhang | projection parts 4 can be improved. Further, since the extended length of the folded portion 22a of the concave portion 25 is configured to be long, it becomes easy to put a hand on the back surface of the folded portion 22a of the concave portion 25 (it becomes easier to apply force), and the box-type container 1 containing articles is stored. This makes it possible to improve workability when carrying a bag.

  Also, for example, when trying to lift the nested box-shaped container 1 from the top one by one, the outer surface of the lifted box-shaped container 1 (mainly the lower surface of the bottom wall 2) and the lower side thereof The space formed between the inner surface of the box-type container 1 (mainly the upper surface of the bottom wall portion 2) is in a negative pressure state, and not only the raised box-type container 1 but also the box-type container 1 below it. There is concern that it will also lift. In this case, when the nested box-shaped container 1 is extracted, there is a possibility that workability may be deteriorated, for example, the lower box-shaped container 1 needs to be pressed by hand.

  On the other hand, according to the present embodiment, the first side wall 11 and the second side wall 12 have the third side wall 13 and the fourth side wall whose inclination angles with respect to the vertical direction of the portions (12b) near both sides in the width direction are the same. The angle is about 9 degrees, which is the same as that of the portion 14, and the inclination angle of the central portion (12 a) in the width direction with respect to the vertical direction is about 10 degrees. That is, the width direction center part (12a) of the 1st side wall part 11 and the 2nd side wall part 12 inclines largely toward the outer peripheral side of the surrounding wall part 3 rather than the other site | part. For this reason, when nesting the box-shaped container 1, the distance between the width direction center part (12a) of the 1st side wall part 11 and the 2nd side wall part 12 of the box-shaped container 1 piled up and down becomes comparatively large. (See FIGS. 5 and 6). Therefore, it becomes easy for outside air to enter the space formed between the upper and lower box-shaped containers 1 from the gap between the widthwise central portions (12a), and when the upper box-shaped container 1 is lifted, the lower box-shaped container The situation where 1 sticks can be prevented. As a result, it is possible to smoothly perform the operation of extracting the upper box container 1 from the nesting state.

  In general, the first side wall portion 11 and the second side wall portion 12 formed along the long side portion of the bottom wall portion 2 are convex toward the inner peripheral side of the peripheral wall portion 3 at the center in the width direction. Prone to molding distortion. When molding distortion occurs in this way, the center portion in the width direction of the first side wall portion 11 and the second side wall portion 12 is positioned closer to the inner peripheral side of the peripheral wall portion 3 than both side portions in the width direction, and nesting occurs. There is a concern that the first side wall part 11 and the second side wall part 12 of the box-type container 1 that are stacked one above the other are close to or in contact with each other. Due to this, there is a risk that workability may be reduced during the operation of extracting the nested box-shaped container 1.

  On the other hand, according to the present embodiment, the first side wall part 11 and the second side wall part 12 are formed so that the center part in the width direction is inclined toward the outer peripheral side of the peripheral wall part 3, Even if the above-described molding distortion occurs in the second side wall part 12, the width direction central part of the first side wall part 11 and the second side wall part 12 is located on the inner peripheral side of the peripheral wall part 3 rather than the both side parts in the width direction. Can be prevented. Therefore, the operational effect of improving the workability of extracting the nested box-type container 1 can be achieved more reliably.

  Further, a stepped portion 20 is formed on the outer surface of the support leg portion 15, and a portion below the stepped portion 20 is thinner than an upper portion. For this reason, in the level | step-difference part 20, since the clearance gap between the support leg part 15 and the leg part accommodating part 19 becomes large, when lifting the upper box-shaped container 1 among the nested box-shaped containers 1, this clearance gap The outside air easily enters the space formed between the upper and lower box-shaped containers 1. Therefore, when the upper box-shaped container 1 is lifted, the lower box-shaped container 1 sticks because the space formed between the upper and lower box-shaped containers 1 is in a negative pressure state. Such a situation can be prevented. As a result, it is possible to smoothly perform the operation of extracting the upper box container 1 from the nesting state.

  Further, the nested box-type containers 1 are in contact with each other only at the corner ribs 41 formed corresponding to the vicinity of the four corners. For this reason, when stacking, the upper box-shaped container 1 can be stably supported in the vicinity of the four corners, and there are too many parts for supporting the upper box-shaped container 1, and rattling occurs. Can be prevented.

  In addition, the reinforcing rib 42 that supports the lower surface of the support wall portion 16 has a triangular shape, and is configured so that the reinforcing rib 42 does not contact the overhanging portion 4 when nesting is performed. For this reason, the situation where nesting is inhibited by the reinforcing rib 42 can be avoided.

  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) Although not specifically mentioned in the above embodiment, the inclination angle of the folded portion 22 (22a) constituting the recess 25 may be different from the inclination angle of the other folded portion 22 (22b) (for example, vertical The connecting portion between the extending portion 21 and the folded portion 22 (22a) may be formed in an R shape. In this case, when the box-shaped container 1 is nested, a relatively large portion is formed between the extension portion 21 of the lower box-shaped container 1 and the flange portion 27 of the upper box-shaped container 1 at the portion where the recess 25 is formed. A gap can be formed, and when the upper box-shaped container 1 is lifted, it becomes easy to introduce outside air into the space between the box-shaped containers 1 that overlap vertically from the gap. Therefore, when the nesting box-shaped container 1 is removed, the space between the box-shaped containers 1 that are vertically overlapped with each other is in a negative pressure state, so that it is possible to more reliably prevent such a situation that the extraction work cannot be performed smoothly. Can do.

  (B) Although not specifically mentioned in the above embodiment, for example, the box-type container 1 may be formed of a virgin material and a recycled material. In this case, the material cost of the box-type container 1 can be reduced, and resource saving can be achieved. Moreover, as shown in FIG. 11, the 3rd side wall part 13 side (site | part which attached the dotted pattern) is formed with a virgin material rather than the longitudinal direction center part of the box-shaped container 1, and the 4th side wall part 14 side is said side. The virgin material may be formed of a recycled material having a different color. In this case, the orientation of the box-type container 1 can be determined instantaneously, and the workability when stacking or nesting can be improved. Furthermore, as shown in FIG. 12, only a part of the overhanging portion 4 (spot pattern is formed so that the orientation of the box-shaped container 1 can be grasped when the box-shaped container 1 is viewed from above, front, rear, and side. It is good also as forming the site | part which attached | subjected with the virgin material. In this case, the orientation of the box-shaped container 1 can be determined instantaneously, and the ratio of the parts formed of the virgin material is reduced, so that the operational effects such as reduction in material cost and resource saving are more reliably achieved.

  (C) In the above embodiment, the concave portion 25 and the flange portion 27 may be formed at the longitudinal center position of the portion of the overhang portion 4 formed corresponding to the side wall portions 11 and 12.

  Moreover, in the said embodiment, although the label sticking part 44 is provided only in the extension part 21 upper surface of the 3rd overhang | projection part 33 and the 4th overhang | projection part 34, it is good also as providing in another site | part. For example, it is good also as providing the label sticking part 44 in the site | part corresponding to the 1st side wall part 11 and the 2nd side wall part 12 among the overhang | projection parts 4, and the label sticking part 44 is made into the 3rd overhang part 33 and 4th. It is good also as a structure which forms from the extension part 21 upper surface of the overhang | projection part 34 to the outer side surface of the folding | turning part 22, and affixes the label sticking part 44 so that a label may be bent in L shape.

  (D) In the said embodiment, although the flange part 27 is provided in the lower edge part of the folding | turning part 22 (22a), as providing in any position between the upper edge part of the folding | turning part 22a and a lower edge part Also good. That is, even if the flange portion 27 is provided at any position between the upper edge portion and the lower edge portion of the folded portion 22a, the flange portion 27 of the nested upper box container 1 and the lower box container 1 The distance to the flange portion 27 is the same, and the same effects as those of the above embodiment are achieved.

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

  DESCRIPTION OF SYMBOLS 1 ... Box-shaped container, 2 ... Bottom wall part, 3 ... Perimeter wall part, 4 ... Overhang | projection part, 11 ... 1st side wall part, 12 ... 2nd side wall part, 13 ... 3rd side wall part, 14 ... 4th side wall part, DESCRIPTION OF SYMBOLS 15 ... Supporting leg part, 16 ... Support wall part, 19 ... Leg part accommodating part, 20 ... Step part, 21 ... Extension part, 22 ... Folding part, 24 ... General part, 25 ... Recessed part, 27 ... Flange part, 33 ... 3rd overhang part, 34 ... 4th overhang part, 41 ... corner rib.

Claims (7)

A substantially rectangular bottom wall,
A frame-shaped peripheral wall portion extending upward from the peripheral edge portion of the bottom wall portion;
A projecting portion projecting from the entire peripheral region of the upper edge portion of the peripheral wall portion toward the outer peripheral direction of the peripheral wall portion;
In the box-shaped container in which each of these wall portions is integrally formed by molding and opens upward,
The peripheral wall portions respectively extend upward from a pair of long side wall portions extending upward from the opposing long side portions of the bottom wall portion, and extending upward from the opposing short side portions of the bottom wall portion. A pair of short side walls connecting the side parts of the long side wall parts of
The overhanging portion includes an extending portion that extends from the upper edge portion of each side wall portion toward the outer peripheral direction of the peripheral wall portion, and a folded portion that extends downward from the leading edge of the extending portion. Prepared,
It is configured to allow nesting by stacking the box-shaped containers up and down in the same direction,
A short side overhang portion formed corresponding to the short side wall portion of the overhang portion has a concave portion formed in a concave portion on the inner peripheral side of the overhang portion in the longitudinal center portion.
A box shape characterized in that a flange portion extending in the outer peripheral direction of the overhanging portion is provided inside the concave portion at a position separated from the upper edge portion or the lower edge portion of the folded portion by a predetermined distance. container.   The edge of the flange portion on the outer peripheral side of the flange portion is flush with the outer surface of the folded portion of the general portion located on both sides of the portion where the recess is formed in the overhang portion, or the general portion. 2. The box-shaped container according to claim 1, wherein the box-shaped container is located on an inner peripheral side of the overhang portion with respect to an outer side surface of the folded portion. The concave portion is formed by providing the folded portion on the inner peripheral side of the overhang portion with respect to the folded portion of the general portion located on both sides of the portion where the concave portion is formed in the overhang portion, and the flange. The portion is configured to extend from the lower edge portion of the folded portion to the outer peripheral side of the overhang portion,
The extension length of the folded portion of the recess is configured to be longer than the extended length of the folded portion of the general portion, and the flange portion is connected to the folded portion of the general portion. Item 3. A box-shaped container according to item 1 or 2.   The long side wall portion includes a first inclined portion having an inclination angle with respect to a vertical direction that is the same as that of the short side wall portion, and a second inclined portion that is largely inclined to the outer peripheral side of the peripheral wall portion rather than the first inclined portion. The box-type container according to any one of claims 1 to 3, wherein the box-shaped container is provided.   The long side wall portion is a mold having different inclination angles in the vertical direction between a first forming portion for forming the first inclined portion and a second forming portion for forming the second inclined portion. The box-shaped container according to claim 4, which is formed using an apparatus.   Among the long side wall portions, the vicinity of both sides in the width direction connected to the short side wall portions is configured as the first inclined portion, and the central portion in the width direction is configured as the second inclined portion. The box-shaped container according to claim 4 or 5, wherein The box-shaped container is configured to be stacked by alternately rotating 180 degrees and stacking up and down,
A support wall for supporting the upper box container when stacking;
A support leg portion supported by the support wall portion of the lower box-shaped container when stacking;
The support leg portion is configured to be formed in a hollow shape, and includes a leg portion accommodating portion that can accommodate the support leg portion of the upper box-shaped container when nesting is performed,
7. A step portion is provided on an outer surface of the support leg portion, and a portion of the support leg portion that is lower than the step portion is thinner than an upper portion. Box-shaped container according to crab.

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