JP2013154912A - Foamed resin container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container which makes load collapsing hard to occur when a plurality of foamed resin containers or container main bodies are stacked.SOLUTION: In a foamed resin container 1, a body bottom part 11 includes a protruding part 11b which is formed in such a manner that a region on the more internal side than an outer peripheral bottom surface 11a may become a protuberance shape toward the outside of a container body 10. A body peripheral wall part 12 includes a projected line 13 for fitting which protrudes in the standing direction, and of which the cross part of the upper part is an approximately circular shape. A lid body top part 21 includes a recess part 21b which is formed in such a manner that a region on the more internal side than the outer peripheral top surface 21a may become a recess shape in the hanging-down direction of the lid body peripheral wall part 22. The lid body peripheral wall part 22 includes a recessed line 23 for fitting having a recess shape in which the projected line for fitting is fitted. The protruding part and the recess part 21b are constituted to be protuberance-recess-fittable with the protruding part of the container on the upper stage and the recess part of the container 1 on the lower stage when a plurality of containers are stacked, and are further constituted in such a manner that the protruding part of the container body on the upper stage can be engaged with a region which is defined by the projected line for fitting of the container body on the lower stage when a plurality of container bodies are stacked.

Description

  The present invention relates to a foamed synthetic resin container used for transporting goods (for example, foods such as shiitake mushrooms).

  2. Description of the Related Art Conventionally, containers formed using foamed synthetic resin are known as containers used when goods (for example, food such as shiitake) are transported (for example, Patent Document 1 and Patent Document 2). The container includes a container body that is configured to have an opening that opens upward and that can accommodate a product, and a lid that closes the opening of the container body.

  The container main body includes a main body bottom portion on which a product is placed and a main body peripheral wall portion rising from an outer peripheral portion of the main body bottom portion. The lid includes a lid top that faces the bottom of the main body in a state where the opening of the container body is closed, and a lid peripheral wall that hangs down from the outer periphery of the lid top. Moreover, either one of a main body surrounding wall part or a cover body surrounding wall part is provided with the convex protrusion protrusion, and the other is provided with the concave fitting groove which the said protrusion protrusion fits. Therefore, when the opening of the container body is closed with the lid, the lid can be fixed to the container body by fitting the fitting recess and the fitting protrusion.

  By the way, in the transportation to the destination of the container, from the viewpoint of transportation efficiency, the container is stacked in a plurality of stages on a loading platform such as a transport vehicle. In such stacking, the opening of the container body is a lid. There are a case where the containers closed in the above are stacked in a plurality of stages and a case where only the container main body from which the lid is removed from the container is stacked in a plurality of stages. Specifically, when stacking containers in a plurality of stages, the lower surface forming the plane of the bottom of the main body of the upper container is brought into contact with the upper surface forming the plane of the top of the lid of the lower container, and the container Containers in which the opening of the main body is closed with a lid are stacked in a plurality of stages.

  On the other hand, when stacking only the container main body in a plurality of stages, the lower surface forming the flat surface of the main body bottom of the upper container body is brought into contact with the upper surface forming the flat surface of the main body peripheral wall of the lower container main body. Only the container main body from which the lid is removed is stacked in a plurality of stages.

Japanese Utility Model Publication No. 63-34069 JP 2007-308140 A

  However, in the above-described conventional container, when transported in a state of being stacked in a plurality of stages as described above, the lower surface of the main body bottom portion, the upper surface of the lid top portion, and the upper surface of the peripheral wall portion of the main body are all flat. Therefore, the upper container body easily slides with respect to the lower lid body or the upper container body slides with respect to the lower container body, and the load collapses easily.

  Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a foamed resin container that is less likely to cause collapse when a plurality of foamed resin containers or container bodies are stacked and transported. And

  A foamed resin container according to the present invention has been made to solve the above-described problem, and includes a container body configured to have an opening opened upward and capable of accommodating a product, and to close the opening of the container body. And the container body includes a main body bottom portion on which a product is placed and a main body peripheral wall portion rising from an outer peripheral portion of the main body bottom portion, and the lid body closes the opening of the container main body. A foamed resin container comprising a lid body top portion facing the bottom portion and a lid body peripheral wall portion depending from the outer circumference portion of the lid body top portion, and formed from a foamed synthetic resin. The inner peripheral region has a convex portion that is convex toward the outside of the container body, and the peripheral wall portion of the main body has a convex shape in the standing direction and the upper portion has a substantially circular cross section. The lid top is provided with a joint ridge, and the inner side of the outer peripheral upper surface. Is provided with a recess formed so as to be concave toward the direction in which the lid peripheral wall portion hangs down, and the lid peripheral wall portion includes a concave fitting groove into which the fitting convex strip is fitted, When the plurality of containers are stacked, the protrusions and the recesses are configured so that the protrusions of the upper container can be engaged with the recesses of the lower container, and when the plurality of container bodies are stacked, The convex portion of the upper container body is configured to be engageable with a region defined by the fitting protrusions of the lower container body.

  According to the foamed resin container having such a configuration, the peripheral wall portion of the main body is provided with a convex protrusion for fitting having an upward convex shape and an upper portion having a substantially circular cross section, and the convex protrusion for fitting is fitted to the peripheral wall portion of the lid. Since the mating concave ridges are provided, the mating ridges can be fitted to the mating ridges, and the container body and the lid of the foamed resin container can be stably fitted. it can.

  In addition, such a foamed resin container has a concave and convex fit between a convex portion formed in a region inside the outer peripheral bottom surface of the main body bottom portion and a concave portion formed in a region inside the outer peripheral upper surface of the lid body top portion. When the foamed resin containers having the container body and the lid fitted together as described above are stacked in a plurality of stages, the convex portions of the container body and the lower foamed resin in the upper foamed resin container are configured. The concave and convex portions of the lid in the container can be engaged with each other. Therefore, when transporting the foamed resin container in which the container main body and the lid are fitted in a stacked state in a plurality of stages, the upper foamed resin container can be regulated in the horizontal direction by the uneven fitting, When stacking and transporting a plurality of foamed resin containers, cargo collapse can be made difficult to occur.

  Further, according to the foamed resin container having such a configuration, when a plurality of container main bodies are stacked, the convex portion of the upper container main body can be engaged with the region defined by the fitting ridges of the lower container main body. Therefore, when only the container body with the lid removed from the foamed resin container is stacked in a plurality of stages, the convex part of the upper container body is an area defined by the convex protrusions for fitting the lower container body. And can be engaged inside the opening. Therefore, when only the container main body with the lid removed from the foamed resin container is transported in a state where it is stacked in a plurality of stages, the upper container main body can be regulated in the horizontal direction by the engagement, so that the plurality of containers When stacking and transporting the main body, there is an effect that the collapse of the cargo can be made difficult to occur.

  Further, the fitting protrusion on the peripheral wall portion of the main body has a convex shape in the standing direction and the upper portion has a substantially circular cross section, so that when the plurality of container main bodies are stacked or unloaded, the convex portion of the upper container main body Can be slid on the upper curved surface of the fitting ridge of the lower container body, and therefore, the upper container body can be smoothly stacked or unloaded with respect to the lower container body.

  In the foamed resin container according to the present invention, the bottom surface of the main body bottom includes the outer peripheral bottom surface, a convex bottom surface, and a side surface, and the side surfaces include an inner peripheral portion of the outer peripheral bottom surface and an outer peripheral portion of the convex bottom surface. When the plurality of container bodies are stacked, the upper ends of the fitting ridges of the lower container body come into contact with the outer peripheral bottom surface of the upper container body, and the fitting protrusions of the lower container body It is also possible to configure so that the inner curved surface of the upper part of the strip contacts or is close to the convex side surface of the upper container body.

  According to the foamed resin container having such a configuration, when a plurality of container main bodies are stacked, the upper ends of the fitting ridges of the lower container main body are in contact with the outer peripheral bottom surface of the upper container main body, and the lower container main body is fitted. Since the inner curved surface of the upper part of the joint ridge is in contact with or close to the convex side surface of the upper container body, the lower container body supports the upper container body and can be moved and regulated (or positioned). It is possible to prevent the collapse of the container that easily collapses the container body.

  As described above, according to the foamed resin container according to the present invention, the convex portion formed in the inner region from the outer peripheral bottom surface of the main body bottom portion and the inner region from the outer peripheral upper surface of the lid top portion are formed. The container body in the upper foamed resin container is transported in a state where the foamed resin containers in which the container body and the lid are fitted are stacked in a plurality of stages. The concave portion of the lid of the lower foam resin container and the concave portion of the lid of the lower foam resin container can be unevenly fitted, and accordingly, the upper foam resin container can be restricted in the horizontal direction by this concave and convex fitting. When the foamed resin containers are stacked and transported, there is an effect that the collapse of the load can be made difficult to occur.

  Further, according to the foamed resin container according to the present invention, when a plurality of container main bodies are stacked, the convex portion of the upper container main body can be engaged with the region defined by the fitting convex stripes of the lower container main body. Because it is configured, when transporting only the container body with the lid removed from the foamed resin container in a stacked state, the convex part of the upper container body is defined by the convex protrusion for fitting the lower container body Can be engaged with the inside of the opening, so that the upper container body can be regulated in the horizontal direction by this engagement, and a plurality of container bodies can be stacked and transported. This has the effect that the collapse of the cargo can be made difficult to occur.

Sectional drawing of the foamed resin container which concerns on this embodiment is shown. (A) is a top view of the container main body of the foamed resin container, (b) shows a bottom view of the container main body. FIG. 3 is a sectional view taken along line AA in FIG. 2. (A) is a top view of the lid body of the foamed resin container, and (b) shows a bottom view of the lid body. The BB sectional view taken on the line of FIG. 4 is shown. Sectional drawing of the state which piled up the foamed resin container which was the same foamed resin container and made the container main body and the cover body fit is shown. Sectional drawing of the state which accumulated only the container main body which removed the cover body from the foamed resin container is shown.

  Hereinafter, an embodiment of a foamed resin container according to the present invention will be described with reference to the drawings. In the following description, the vertical direction and the horizontal direction are defined on the basis of the cross-sectional view of FIG.

  As shown in FIG. 1, the foamed resin container 1 according to the present embodiment is a container formed using a foamed synthetic resin, and is configured to accommodate a product (for example, shiitake mushroom). Specifically, the foamed resin container 1 includes a box-shaped container body 10 having an upper surface opening (an opening opened upward), and a lid 20 that closes the upper surface opening of the container body 10. The opening is closed with the lid 20 in a state where the commodity is accommodated in the container body 10. Hereinafter, a state in which the lid 20 closes the opening of the container body 10 is referred to as a lid closed state. The foamed synthetic resin constituting the foamed resin container 1 is not particularly limited, and for example, a resin in which a plurality of foamable resin particles are integrally molded can be used. As the expandable resin particles, a polystyrene resin, a polyolefin resin (for example, a polypropylene resin, a polyethylene resin, or the like), or a composite resin containing these can be used.

  The container body 10 is provided with an internal space corresponding to the size of the product to be accommodated. Specifically, as shown in FIGS. 1 to 3, the container main body 10 includes a main body bottom portion 11 on which a product is placed and a main body peripheral wall portion 12 rising from the outer peripheral portion of the main body bottom portion 11. A space surrounded by the bottom portion 11 and the main body peripheral wall portion 12 is an internal space (accommodating space opened upward) for accommodating the product.

  The main body bottom 11 has a plate shape, and is configured such that a product can be placed on the upper surface 11A (inside the container main body 10). In the present embodiment, the main body bottom portion 11 has a substantially rectangular shape in plan view formed so that one direction (left-right direction) is a longitudinal direction.

  The main body bottom portion 11 includes a convex portion 11b formed such that a region inside the outer peripheral portion (outer peripheral bottom surface 11a) of the bottom surface is convex toward the outside (specifically, downward) of the container main body. Prepare. Accordingly, the bottom surface of the main body bottom portion 11 includes an outer peripheral bottom surface 11a, a convex bottom surface 11c that forms a convex portion 11b described later, and a convex side surface 11d.

  The convex portion 11b is a convex portion side surface 11d formed by a convex bottom surface 11c formed on the end surface in the protruding direction and an inclined surface connecting the outer peripheral portion of the convex bottom surface 11c and the inner peripheral portion of the outer peripheral bottom surface 11a. (See FIG. 3).

  The convex bottom surface 11 c is formed substantially parallel to the upper surface 11 A and the outer peripheral bottom surface 11 a of the main body bottom 11. Moreover, in this embodiment, the convex part bottom face 11c is formed in the planar view square shape, specifically, the rectangular shape which one direction (left-right direction) becomes a long side.

  11 d of convex part side surfaces are integrally connected to the whole outer peripheral part of the bottom face 11c of convex part. The convex side surface 11d is integrally connected to the entire inner peripheral portion of the outer peripheral bottom surface 11a at the upper end. The convex side surface 11d is inclined outward and upward from the outer peripheral portion of the convex bottom surface 11c, and the upper end portion is connected to the inner peripheral portion of the outer peripheral bottom surface 11a. That is, the angle formed by the convex bottom surface 11c and the convex side surface 11d is configured to exceed 90 °. That is, the convex portion 11b is formed to have a truncated pyramid shape in which the protruding end side is narrowed.

  Moreover, the convex part 11b is formed in the area | region below the opening surface K (refer FIG. 3) in the opening part formed in the container main body 10. FIG. Specifically, the convex portion 11 b includes a convex bottom surface 11 c that is smaller than the opening surface K defined by the upper ends of the fitting protrusions 13 of the container body 10, and the convex bottom surface 11 c is the opening surface K of the container main body 10. It is formed so that it may be located in the center of the lower region. That is, the convex portion 11 b of one container body 10 is formed so as to fit inside the opening of another container body 10. In other words, when the plurality of container bodies 10 are stacked, the protrusions 11b can engage with the region defined by the fitting protrusions 13 of the lower container body 10 when the protrusions 11b of the upper container body 10 are stacked. It is comprised so that. More specifically, when the plurality of container main bodies 10 are stacked, the convex part 11b is formed such that the convex side surface 11d of the upper container main body 10 is the inner curved surface 13c of the upper part 13b of the fitting convex strip 13 of the lower container main body 10. (Refer to the enlarged view of FIG. 7). At that time, the outer peripheral bottom surface 11a of the upper container body 10 comes into contact with the upper end of the fitting ridge 13 of the lower container body 10.

  A main body peripheral wall portion 12 formed integrally with the main body bottom portion 11 is extended from the main body bottom portion 11 so as to stand up from the outer peripheral portion of the upper surface 11A. Specifically, a main body peripheral wall portion 12 is formed on the main body bottom portion 11 so as to protrude upward continuously from the entire outer peripheral portion (the entire circumference) of the upper surface 11A.

  The main body peripheral wall portion 12 includes a main body side wall 12A that is a wall portion formed around the main body bottom portion 11, and a fitting ridge 13 protruding from the upper end of the main body side wall 12A. Specifically, the body peripheral wall portion 12 is orthogonal to the pair of opposing body side walls (left and right body side walls) 12A1 formed along the longitudinal direction (left and right direction) of the container body 10 and the longitudinal direction of the container body 10. And a pair of opposing main body side walls (front and rear main body side walls) 12A2 formed along the short direction (front and rear direction) (see FIG. 2A). Further, the main body peripheral wall portion 12 protrudes in the direction in which the main body side wall 12A stands up over the entire circumference of the inner peripheral portion (opening edge portion of the container main body 10) of the upper end portion of the main body side wall 12A (in other words, It is provided with a fitting ridge 13 that protrudes upward. The fitting ridge 13 protrudes (stands) upward from the inner peripheral portion of the upper end portion of the main body side wall 12A and swells from the lower end 13a (or base portion 13a) having a substantially rectangular cross section and the upper end of the lower portion 13a. And an upper portion 13b (or a tip portion 13b) having a substantially circular cross section. In the fitting ridge 13 according to this embodiment, the diameter 2r of the cross section of the upper portion 13b is 9 mm (that is, the radius r is 4.5 mm), and the cross sectional width w1 of the lower portion 13a is 8 mm (see FIG. 3). Accordingly, the cross-sectional width w1 of the lower portion 13a is smaller than the maximum width 2r (9 mm) of the upper portion 13b. Further, the cross-sectional width w2 of the portion of the upper portion 13b that bulges inward of the container body 10 from the lower portion 13a is 0.5 mm. In this embodiment, the maximum width 2r of the upper portion 13b and the cross-sectional width of the lower portion 13a It is half of the difference with w1.

  In the convex portion 11b according to the present embodiment, the height h1 is 3 mm, and the slope width w3 of the convex side surface 11d determined by the height h1 and the slope angle of the convex side surface 11d is 1 mm (see FIG. 3). ). That is, the inclination width w3 (1 mm) of the convex side surface 11d is configured to be smaller than the height h1 (3 mm). Further, the height h1 (3 mm) of the convex portion 11b is configured to be smaller than the radius r (4.5 mm) of the section of the upper portion 13b of the fitting convex strip 13. In addition, the slope width w3 (1 mm) of the convex portion side surface 11d is larger than the cross-sectional width w2 (0.5 mm) of the portion of the upper portion 13b of the fitting ridge 13 that bulges inward of the container body 10 from the lower portion 13a. Is also made up of large. Here, the height h1 of the convex portion 11b is a distance between the convex portion bottom surface 11c and the outer peripheral bottom surface 11a, and is a length of a line extending vertically from the convex portion bottom surface 11c to the outer peripheral bottom surface 11a.

  As shown in FIGS. 4 and 5, the lid 20 is configured to be detachable from the container body 10. Specifically, when the lid 20 is attached to the container main body 10, the lid top 21 formed so as to cover the opening of the container main body 10, and the outer periphery of the lid top 21 is a container. It is comprised from the cover surrounding wall part 22 extended (hanging down) toward the main body 10 side (downward), and the interior space enclosed by the cover top part 21 and the cover surrounding wall part 22 is provided.

  The lid top portion 21 is formed in a plate shape, and has a substantially rectangular shape in plan view, which is substantially the same shape as the main body bottom portion 11 having a longitudinal direction in one direction (left and right direction). The lid top 21 has one surface side (lower surface side) facing the main body bottom 11 in a state where the opening of the container main body 10 is closed. Specifically, when the lid is closed, the lid top 21 is disposed so as to face the main body bottom 11 in the vertical direction so that the lower surface thereof is substantially parallel to the upper surface of the main body bottom 11.

  The lid top 21 has a predetermined region on the other side (the top side and the top side when the lid is closed) on one side (the lid bottom side and the lid is closed). It is formed to be concave toward the container body side). Specifically, in the lid closed state, the lid top 21 has a region inside the upper surface of the outer peripheral portion (the outer peripheral upper surface 21a) in a direction in which the lid peripheral wall portion 22 hangs down (on the container body 10 side or A recess 21b formed to be concave toward the lower side. Therefore, the upper surface of the lid top portion 21 is composed of an outer peripheral upper surface 21a, a recess bottom surface 21c that forms a later-described recess 21b, and a recess side surface 21d.

  The recess 21b is formed to be recessed in the upper surface of the lid top 21 in the direction in which the lid peripheral wall 22 extends, and the recess bottom 21c located on the container body 10 side (downward) in the closed state. And a recess side surface 21d rising from the outer periphery of the recess bottom surface 21c.

  The recess bottom surface 21 c is formed so as to be substantially parallel to the main body bottom portion 11. More specifically, the concave bottom surface 21c is formed to be parallel to the convex bottom surface 11c. In the present embodiment, the concave bottom surface 21c is formed in a quadrangular shape in plan view, specifically, a rectangular shape having one direction (left-right direction) as a longitudinal direction.

  The concave side surface 21d has a lower end portion integrally connected to the entire outer peripheral portion of the concave bottom surface 21c. Further, the recess side surface 21d is integrally connected to the inner peripheral portion of the outer peripheral upper surface 21a at the upper end. The concave side surface 21 d is inclined outward and upward from the outer peripheral portion of the concave bottom surface 21 c, and the upper end portion is connected to the inner peripheral portion of the outer peripheral upper surface 21 a of the lid top portion 21. That is, the angle formed by the recess bottom surface 21c and the recess side surface 21d exceeds 90 °. That is, a truncated pyramid-shaped space is formed inside the recess 21b so as to expand upward from the recess bottom surface 21c side.

  The concave portion 21b is configured to be able to fit with the convex portion 11b. In the present embodiment, in a state where the container body 10 is stacked on the lid 20, the outer peripheral top surface 21 a of the lid top 21 and the outer peripheral bottom surface 11 a of the main body bottom 11 abut, and the concave bottom surface 21 c of the concave portion 21 b protrudes. The concave portion 21b is configured so as to be able to be engaged with the convex portion 11b so that the concave side surface 21d of the concave portion 21b abuts on or close to the convex side surface 11d of the convex portion 11b. (See the enlarged view of FIG. 6). In the present embodiment, the depth h2 of the recess 21b is 3 mm, and the inclination width w4 of the recess side surface 21d determined by the depth h2 of the recess 21b and the inclination angle of the recess side surface 21d is 1 mm (see FIG. 5). Here, the depth h2 of the concave portion 21b is a distance between the outer peripheral upper surface 21a and the concave bottom surface 21c, and is a length of a line extending perpendicularly from the outer peripheral upper surface 21a to the concave bottom surface 21c.

  The lid top portion 21 is provided with a lid peripheral wall portion 22 that is integrally formed from the entire outer peripheral portion and hangs down to the container body 10 side (lower side). The lid peripheral wall portion 22 is formed so as to hang from the outer peripheral portion of the lid top portion 21, and is integrally formed along the outer peripheral portion of the lid top portion 21. In the present embodiment, the lid peripheral wall portion 22 includes a pair of opposing lid side walls (left and right lid side walls) 22A1 formed along the longitudinal direction (left and right direction) of the lid top 21 and the lid top. It is comprised from a pair of opposing cover body side wall (front-and-back cover side wall) 22A2 formed along the transversal direction (front-back direction) orthogonal to the longitudinal direction (left-right direction) of the part 21 (FIG. 4 ( b)).

  Moreover, the cover body surrounding wall part 22 is comprised so that fitting with the container main body 10 is possible. Specifically, the lid side wall 22A includes a concave fitting groove 23 into which the fitting convex line 13 is fitted when the lid is closed. This fitting recess 23 is formed over the entire circumference of the inner peripheral portion of the lower end portion of the lid side wall 22A, and locks the fitting projection 13 in a state in which the fitting projection 13 is fitted. It is configured by forming a concave groove. Specifically, the fitting recess 23 has a pair of wall portions with a lower portion (lower end side of the lid peripheral wall portion 22) 23a spaced apart from each other in parallel, and an upper portion (lid top portion 21 side) 23b. Forms a wall portion that forms a substantially circular space in cross section, and the groove width of the upper portion 23b is wider than the lower portion 23a (see FIG. 5). In the fitting recess 23 according to this embodiment, the groove width 2R of the upper portion 23b is 9 mm (that is, the radius R is 4.5 mm), and the groove width w5 of the lower portion 23a is 8 mm. Further, the groove width w6 of the portion of the upper portion 23b that bulges inward from the lower portion 23a is 0.5 mm.

  When a product (for example, shiitake mushroom) is stored in the foamed resin container 1 having the above-described configuration, the product is placed on the upper surface 11A of the main body bottom 11 of the container main body 10. And the cover body 20 is attached to the container main body 10 so that the opening part of the container main body 10 may be obstruct | occluded. At this time, the fitting recess 23 of the lid 20 and the fitting protrusion 13 of the container body 10 are in a state of being unevenly fitted. Specifically, the upper portion 13b of the fitting ridge 13 is fitted into the upper portion 23b of the fitting ridge 23 and locked by the lower portion 23a, and the lower portion 13a of the fitting ridge 13 is fitted to the fitting groove 23. It will be in the state clamped by the lower part 23a (refer the enlarged view of FIG. 1). And the lower end part of the side wall part 22 of the cover body 20 and the upper end part of the side wall part 12 of the container main body 10 will be in contact, and the container main body 10 and the cover body 20 will be fitted. By this fitting, a sealed foamed resin container 1 is formed.

  Further, when the foamed resin container 1 is transported, as shown in FIGS. 6 and 7, the sealed foamed resin container 1 in which the opening of the container body 10 is closed with the lid 20 is provided in a plurality of stages on a loading platform such as a vehicle. In some cases, only the container body 10 from which the lid 20 is removed from the foamed resin container 1 is stacked in a plurality of stages on a loading platform such as a vehicle.

  When the foamed resin container 1 in a sealed state (lid closed state) in which the opening of the container body 10 is closed with the lid 20 is stacked and transported in a plurality of stages on a loading platform such as a vehicle (see FIG. 6), the foamed resin container When stacking 1 in a plurality of stages, the convex part 11b of the container body 10 in the upper foamed resin container 1 and the concave part 21b of the lid 20 in the lower foamed resin container 1 are concavo-convexly fitted. Specifically, the outer peripheral top surface 21a of the lower lid top 21 and the outer peripheral bottom surface 11a of the upper main body bottom 11 come into contact with each other, and the concave bottom surface 21c of the lower concave portion 21b and the convex bottom surface 11c of the upper convex portion 11b. And the concave side surface 21d of the lower concave portion 21b and the convex side surface 11d of the upper convex portion 11b abut or approach each other. Due to the uneven fitting, the movement of the upper foamed resin container 1 in the horizontal direction is restricted, and the upper foamed resin container 1 is stacked while being stably held in the horizontal direction with respect to the lower foamed resin container 1. It is done. In other words, the lower foamed resin container 1 (lid 20) supports the upper foamed resin container 1 (container body 10) and restricts movement (or positioning).

  When only the container body 10 with the lid 20 removed from the foamed resin container 1 is transported in a plurality of stages on a loading platform such as a vehicle (see FIG. 7), when stacking the container bodies 10 in a plurality of stages, The convex portion 11b of the upper container body 10 is engaged with the inside of the opening, which is an area defined by the fitting convex stripes 13 of the lower container main body 10. In the stacking operation, the convex portion 11b of the upper container body 10 is slid on the curved surface of the upper portion 13b of the fitting ridge 13 of the lower container body 10. And while making the upper end of the convex protrusion 13 of the lower container main body 10 contact the outer peripheral bottom face 11a of the upper container main body 10, the inner curved surface 13c of the upper part 13b of the convex protrusion 13 of the lower container main body 10 is made. It is brought into contact with or close to the convex side surface 11d of the upper container body 10. As described above, the convex portion 11b of the upper container body 10 is fitted into and engaged with the region defined by the fitting protrusions 13 of the lower container body 10, so that the upper container body 10 is horizontal. Movement in the direction is restricted, and the upper container body 10 is stacked while being stably held in the horizontal direction with respect to the lower container body 10. In other words, the lower container body 10 supports and moves (or positions) the upper container body 10.

  As mentioned above, according to the foamed resin container 1 which concerns on this embodiment, the convex part 11b formed in the area | region inside the outer peripheral bottom face 11a of the main body bottom part 11, and the area | region inside the outer peripheral upper surface 21a of the lid body top part 21 When the foamed resin container 1 in which the container main body 10 and the lid 20 are fitted is stacked and transported in a stacked state, the upper stage is formed. The convex portion 11b of the container body 10 in the foamed resin container 1 and the concave portion 21b of the lid body 20 in the lower foamed resin container 1 can be concavo-convexly fitted. Can be restricted in the horizontal direction, so that when the plurality of foamed resin containers 1 are stacked and transported, collapse of the cargo can be prevented.

  Further, according to the foamed resin container 1 according to the present embodiment, when the plurality of container main bodies 10 are stacked, the convex portion 11 b of the upper container main body 10 is defined by the fitting convex stripes 13 of the lower container main body 10. Since the container body 10 with the lid body 20 removed from the foamed resin container 1 is transported in a state where it is stacked in a plurality of stages, the convex portion 11b of the upper container body 10 is formed. Can be engaged with the inside of the opening in the region defined by the fitting ridges 13 of the lower container body 10, and thus the upper container body 10 is restricted from moving in the horizontal direction by this engagement. Therefore, when the plurality of container main bodies 10 are stacked and transported, it is possible to prevent collapse of the cargo.

  Further, the fitting ridges 13 of the main body peripheral wall portion 12 are convex in the standing direction (upward) and the upper portion 13b has a substantially circular cross section. Therefore, when the plurality of container main bodies 10 are stacked or unloaded, The convex portion 11b of the upper container body 10 can be slid on the curved surface of the upper portion 13b of the fitting ridge 13 of the lower container body 10, so that the upper container body 10 is moved relative to the lower container body 10. Can be stacked or unloaded smoothly.

  Further, according to the foamed resin container 1, when stacking a plurality of container main bodies 10, the upper ends of the fitting ridges 13 of the lower container main body 10 come into contact with the outer peripheral bottom surface 11a of the upper container main body 10, and the lower Since the inner curved surface 13c of the upper portion 13b of the fitting ridge 13 of the container body 10 is in contact with or close to the convex side surface 11d of the upper container body 10, the lower container body 10 supports and moves the upper container body 10. As a result of being able to be regulated (or positioned), the collapse of the loaded container body 10 can be prevented.

  Further, according to the foamed resin container 1, since the height h1 of the convex portion 11b is smaller than the radius r of the cross section of the upper portion 13b of the fitting ridge 13, when stacking or unloading the plurality of container main bodies 10, The convex portion 11b of the upper container body 10 is smoothly slid on the curved surface of the upper portion 13b of the fitting ridge 13 of the lower container body 10 so that the upper container body 10 can be easily and quickly moved relative to the lower container body 10. Can be stacked or unloaded.

  Moreover, according to this foamed resin container 1, since the inclination width w3 of the convex side surface 11d is smaller than the height h1, the inclination angle of the convex side surface 11d (that is, the angle formed by the convex side surface 11d and the convex bottom surface 11c). ) Has an inclination of 135 degrees to 180 degrees, and when the plurality of container bodies 10 are stacked or unloaded, the protrusions 11b of the upper container body 10 are fitted to the protrusions for fitting the lower container body 10. 13 can be slid smoothly on the curved surface of the upper part 13b to facilitate the work. Further, when the plurality of container bodies 10 are transported in a stacked state, the convex side surface 11d of the upper container body 10 abuts on the inner curved surface 13c of the upper part 13b of the fitting convex strip 13 of the lower container body 10 or As a result of being able to arrange the adjacent positions on the inner peripheral end side of the inner curved surface 13c, the upper container body 10 can be regulated in a very stable manner in the horizontal direction.

  Moreover, according to this foamed resin container 1, since the width w1 of the lower part 13a of the fitting ridge 13 is smaller than the maximum width 2r of the upper part 13b, the fitting ridge 13 is fitted to the fitting groove 23. At this time, since the upper portion 13b of the fitting ridge 13 is locked to a narrower groove width portion than the upper portion 23b of the lower portion 23a of the fitting ridge 23, the fitting ridge 13 and the fitting recess 13 The fitting with the strip 23 can be strengthened.

  Moreover, according to this foamed resin container 1, the cross-sectional width w2 of the part which bulges in the container main body 10 rather than the lower part 13a among the upper parts 13b of the fitting protrusion 13 is the inclination width w3 of the convex part side surface 11d. The contact position between the outer peripheral bottom surface 11a of the convex portion and the upper portion 13b (upper end) of the fitting convex strip 13, and the convex portion side surface 11d and the upper portion 13b (inner curved surface 13c) of the fitting convex strip 13. Can be disposed directly above (below) the lower portion 13a of the fitting ridge 13 or in the vicinity thereof. Therefore, when the plurality of container bodies 10 are stacked or unloaded, even if the convex portion 11b of the upper container body 10 is slid on the curved surface of the upper portion 13b of the fitting protrusion 13 of the lower container body 10, It is possible to prevent the fitting protrusion 13 of the container body 10 from being damaged.

  In addition, the foamed resin container 1 which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in this embodiment, the height h1 (3 mm) of the convex portion 11b, the inclined width w3 (1 mm) of the convex portion side surface 11d, the depth h2 (3 mm) of the concave portion 21b, and the inclined width w4 (1 mm) of the concave portion side surface 21d. , Radius r (4.5 mm) of the cross section of the upper part 13b of the fitting ridge 13, the width w1 (8mm) of the lower part 13a of the fitting ridge 13, and the container body of the upper part 13b of the fitting ridge 13 than the lower part 13a. 10 Each element of the section width w2 (0.5 mm) bulging inward has been described using the above dimensions (numerical values), but not limited to this, the dimensions (numerical values) of the elements are adjustable. It is.

  Here, the inclination width w3 of the convex side surface 11d and the inclination width w4 of the concave side surface 21d can be configured to have zero dimensions (numerical values). That is, in the present embodiment, the case where the convex side surface 11d and the concave side surface 21d are configured as inclined surfaces has been described. However, the present invention is not limited thereto, and the convex side surface 11d is perpendicular to the convex bottom surface 11c. You may comprise so that the side surface 21d may make a right angle with respect to the recessed part bottom face 21c. Further, the dimension (numerical value) of the section width w2 of the portion of the upper portion 13b of the fitting ridge 13 that bulges inward of the container body 10 from the lower portion 13a can be configured to be zero.

  Further, in the present embodiment, the outer peripheral upper surface 21a of the lid top 21 and the outer peripheral bottom surface 11a of the main body bottom 11 are in contact with each other, the concave bottom surface 21c of the concave portion 21b and the convex bottom surface 11c of the convex portion 11b are in contact with each other. The concave portion 21b has been described so that the concave portion 21b and the convex portion side surface 11d of the convex portion 11b are in contact with or close to each other so that the concave portion 21b can be engaged with the convex portion 11b. The outer peripheral top surface 21a of the lid top 21 and the outer peripheral bottom surface 11a of the main body bottom 11 are in contact with each other, the concave bottom surface 21c of the concave portion 21b is separated from the convex bottom surface 11c of the convex portion 11b, and the concave side surface 21d of the concave portion 21b is convex. The concave portion 21b can be configured to be able to be engaged with the convex portion 11b so that the convex portion side surface 11d of the portion 11b is in contact with or close to the convex portion side surface 11d. Further, the outer peripheral top surface 21a of the lid top 21 and the outer peripheral bottom surface 11a of the main body bottom 11 are separated from each other, and the concave bottom surface 21c of the concave portion 21b and the convex bottom surface 11c of the convex portion 11b are in contact with or close to each other. The concave portion 21b can also be configured to be able to be engaged with the convex portion 11b so that the concave portion side surface 21d abuts the convex portion side surface 11d of the convex portion 11b. Further, the outer peripheral top surface 21a of the lid top 21 and the outer peripheral bottom surface 11a of the main body bottom 11 are separated from each other, the concave bottom surface 21c of the concave portion 21b and the convex bottom surface 11c of the convex portion 11b abut, and the concave side surface 21d of the concave portion 21b. The concave portion 21b can be configured so that the convex portion 11b and the convex portion side surface 11d of the convex portion 11b come into contact with or close to each other.

  DESCRIPTION OF SYMBOLS 1 ... Foam resin container, 10 ... Container main body, 11 ... Main body bottom part, 11A ... Upper surface, 11a ... Outer peripheral bottom surface, 11b ... Convex part, 11c ... Convex part bottom surface, 11d ... Convex part side surface, 12 ... Main body peripheral wall part, 12A ... Side wall of main body, 13 ... convex protrusion for fitting, 20 ... lid, 21 ... lid top, 21a ... upper surface of outer periphery, 21b ... concave portion, 21c ... bottom surface of concave portion, 21d ... side surface of concave portion, 22 ... peripheral wall portion of lid body, 22A ... Lid side wall, 23 ... concave groove for fitting

Claims (2)

A container body having an opening that is open upward and configured to be able to store a product, and a lid that closes the opening of the container body, the container body includes a bottom of the body on which the product is placed and the body And a lid that is suspended from the outer periphery of the lid body, and a lid body that is opposed to the bottom of the body body with the opening of the container body closed. In a foamed resin container comprising a body peripheral wall portion and formed using a foamed synthetic resin,
The main body bottom includes a convex portion formed such that a region inside the outer peripheral bottom surface is convex toward the outside of the container main body,
The main body peripheral wall portion is provided with a convex protrusion for fitting having a convex shape in a standing direction and an upper portion having a substantially circular cross section,
The lid top portion includes a recess formed such that a region inside the outer peripheral upper surface is concave toward the direction in which the lid peripheral wall portion hangs down,
The lid peripheral wall portion includes a concave fitting groove for fitting the fitting convex line,
When the plurality of containers are stacked, the protrusions and the recesses are configured such that the protrusions of the upper container and the recesses of the lower container can be engaged with each other, and when the plurality of container bodies are stacked. A foamed resin container, wherein the convex portion of the upper container body is configured to be engageable with a region defined by the fitting protrusions of the lower container body. The bottom surface of the bottom of the main body includes the outer peripheral bottom surface, a convex bottom surface, and a convex side surface, and the convex side surface is an inclined surface that connects the inner peripheral portion of the outer peripheral bottom surface and the outer peripheral portion of the convex bottom surface. Yes,
When a plurality of container bodies are stacked, the upper end of the fitting ridge of the lower container body abuts on the outer peripheral bottom surface of the upper container body, and the upper inner curved surface of the fitting ridge of the lower container body is the upper The foamed resin container according to claim 1, wherein the foamed resin container is in contact with or close to a convex side surface of the container body.

Images