Lid body and container

Abstract

To make difficult leaving a liquid near a protrusion formed on the upper surface of a lid body.SOLUTION: A first lid body (20) covers an opening formed in an upper part of a container body. On at least the surface of a protrusion (27) protruding upward from the upper surface of the first lid body (20) facing the center part side of the first lid body (20), a guide-shaped part (270) that guides a liquid on the first lid body (20) flowing toward the protrusion (27) in a direction for discharging it out of the first lid body (20) is formed.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a lid for closing an opening formed in the upper part of a container, and to a container with the lid. [Background technology]

[0002] Conventionally, there are known containers with lids that can be stacked, as shown in Patent Document 1. The lid of the container in Patent Document 1 has a protrusion that is rectangular in plan view and protrudes upward from the top surface of the lid. The protrusion of the lid abuts against the bottom of the container stacked above, thereby preventing the upper container from being displaced. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-103694 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, liquid may accumulate on the lid, such as rainwater or cleaning liquid when the container is washed. In this case, it is conceivable to drain the liquid on the lid to the outside of the lid by tilting the container, for example.

[0005] However, in the container of Patent Document 1, even if the container is tilted to drain the liquid on the lid, the rectangular protrusions prevent the liquid from being drained, and water tends to pool on the side of the protrusions facing the center of the lid, which means that there is a possibility that liquid may remain near the protrusions.

[0006] An aspect of the present invention aims to make it difficult for liquid to remain near a protrusion formed on the upper surface of a lid. [Means for solving the problem]

[0007] In order to solve the above problems, a lid body according to one embodiment of the present invention is a lid body that covers an opening formed above a container body, and has a protrusion that protrudes upward from the top surface, and at least the surface of the protrusion facing the center of the lid body is formed with a guiding shape portion that guides liquid on the lid body flowing toward the protrusion in a direction to discharge it outside the lid body. Effect of the Invention

[0008] According to one aspect of the present invention, it is possible to make it difficult for liquid to remain near the protrusion formed on the upper surface of the lid. [Brief description of the drawings]

[0009] [Figure 1] 1 is a perspective view of a foldable container according to an embodiment of the present invention, seen from above. FIG. [Diagram 2] 2 is a perspective view of the foldable container shown in FIG. 1, seen from below. [Diagram 3] FIG. 2 is a perspective view of the foldable container with the lid open, as viewed from above. [Figure 4] 1 is a perspective view of a foldable container in the middle of changing from an assembled state to a folded state, as viewed from above; FIG. [Diagram 5] FIG. 2 is a perspective view of the foldable container in a folded state, as viewed from above. [Figure 6] FIG. 4 is a perspective view of the first cover as viewed from above. [Figure 7] 7 is a cross-sectional view of the first cover shown in FIG. 6 taken along line AA. [Figure 8] 7 is an enlarged view of a guide shape portion shown in FIG. 6. [Figure 9] FIG. 4 is a cross-sectional view showing the structure of a guide shape portion. [Figure 10] FIG. 11 is a perspective view showing an example of a state in which a plurality of foldable containers are stacked. [Figure 11] FIG. 11 is an enlarged view of a region R in FIG. [Figure 12] FIG. 11 is a perspective view showing a modified example of a guiding shape portion according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] [Embodiment] An embodiment of the present invention will be described in detail below. In the following description, the up-down direction refers to the up-down direction of the foldable container 100 in a state in which the bottom of the foldable container 100 is positioned downward. The up-down direction also refers to the height direction of the foldable container 100.

[0011] [Overview of the foldable container 100] The foldable container 100 is a container that can change state between an assembled state in which it is assembled into a box shape as shown in Fig. 1 and a folded state in which it is folded as shown in Fig. 5. The foldable container 100 is also a container that can be stacked in multiple layers in the vertical direction as shown in Fig. 10. The foldable container 100 is an example of a container of the present invention. The foldable container 100 is made of resin, such as polypropylene.

[0012] As shown in Figs. 1 to 3, the folding container 100 includes a container body 1 and a lid body 2. As shown in Fig. 3, an opening 15 is formed at the top of the rectangular parallelepiped container body 1. The lid body 2 is rotatable between a maximum open position shown in Fig. 3, where the lid body 2 is most open, and a closed position shown in Fig. 1, where the lid body 2 is closed. When the lid body 2 is in the closed position, the opening 15 is closed. The container body 1 is composed of a bottom wall 11, a first side wall 12, a second side wall 13, and an upper frame 14.

[0013] (Bottom wall portion 11) As shown in Figs. 2 and 3, the bottom wall 11 is generally rectangular in plan view and is located at the bottom of the folding container 100. As shown in Fig. 2, a rib 112 is formed on the outer periphery of the bottom wall 11, protruding downward from the lower surface of the bottom wall 11. The rib 112 is formed around the outer periphery of the bottom wall 11. A mesh-like rib is formed on the bottom wall 11, protruding downward from the lower surface of the bottom wall 11, within an area surrounded by the rib 112. As shown in Fig. 3, a lower hinge portion 124 is provided on a side portion of the bottom wall 11 in a first direction, which is the longitudinal direction. A lower frame portion 111 is formed on the outer periphery of the bottom wall 11. The lower frame portion 111 protrudes from the outer periphery of the bottom wall 11 toward the outside of the folding container 100.

[0014] (First side wall portion 12) As shown in Fig. 3, a pair of opposing first side walls 12 extend upward from the side edges of the bottom wall 11. The first side wall 12 is a side wall along the longitudinal direction of the folding container 100. As shown in Fig. 1 etc., in this embodiment, the first side wall 12 is divided into two parts, a first upper wall 121 and a first lower wall 122, approximately at the center in the up-down direction. Note that the first side wall 12 may be divided into three or more parts.

[0015] 3, an upper side of the first upper wall portion 121 is rotatably connected to the upper frame portion 14 by an upper hinge portion 123, and a lower side of the first lower wall portion 122 is rotatably connected to the bottom wall portion 11 by a lower hinge portion 124. The lower side of the first upper wall portion 121 and the upper side of the first lower wall portion 122 are rotatably connected to each other by an intermediate hinge portion 125.

[0016] (Second side wall portion 13) A pair of opposing second side walls 13 extend upward from the sides of the bottom wall 11. The second side walls 13 are side walls that extend along a second direction, which is the short side direction of the folding container 100. The second direction may be the long side direction of the folding container 100. As shown in FIG. 3, the second side wall 13 is rotatably connected to the upper frame 14 via a plurality of hinges 131. This allows the second side wall 13 to rotate toward the inside of the folding container 100, as shown by arrow X in FIG. 3.

[0017] (Top frame part 14) As shown in Fig. 3, the upper frame 14 has a generally rectangular shape in a plan view, and is provided along the upper sides of the first side wall 12 and the second side wall 13. The upper frame 14 forms an upper opening 15 of the folding container 100. A pair of long sides of the upper frame 14 are provided with hinges 141, respectively. The hinges 141 are each connected to the lid shafts 22 of the lid 2. As shown in Figs. 1 and 2, recesses 142 may be formed on the outer surfaces of the pair of long sides of the upper frame 14, respectively.

[0018] 3, a pair of short sides of the upper frame portion 14 are formed with restricting protrusions 143 that protrude upward from the upper surface of the upper frame portion 14. The restricting protrusions 143 are protrusions that can come into contact with the lower frame portion 111 of the upper folding container 100 when the folding containers 100 are stacked. The restricting protrusions 143 can restrict displacement of the upper folding container 100 when the folding containers 100 are stacked.

[0019] A pair of short side portions of the upper frame portion 14 are formed with notches 144. The notches 144 are formed below the outer wall surface of the upper frame portion 14. The notches 144 are located between two regulating protrusions 143 formed on the short side portions of the upper frame portion 14 in the short direction of the folding container 100. By forming the notches 144, a gap can be formed between the upper frame portion 14 and the lower frame portion 111 in the folded state shown in FIG. 5. An operator can hold the folding container 100 in the folded state by inserting his / her hand into the gap formed by the notches 144 and gripping the portion of the notches 144. The operator can also hold the folding container 100 in the assembled state by gripping the portion of the notches 144.

[0020] Through holes 145 are formed in a pair of short sides of upper frame portion 14. Through holes 145 are formed to penetrate upper frame portion 14 in the vertical direction, and are connected to the space outside folding container 100. Through holes 145 may be located outside the container with respect to the outer surface of second side wall portion 13. Through holes 145 are formed in upper frame portion 14 in correspondence with the position of insertion hole 28 (see FIG. 6) formed in lid body 2.

[0021] (Lid 2) The lid body 2 is rotatable relative to the container body 1 and is capable of closing an opening 15 at the top of the folding container 100. More specifically, the opening 15 is closed by two lid bodies 2. In the following description, one of the two lid bodies 2 will be referred to as a first lid body 20 and the other lid body 2 will be referred to as a second lid body 21.

[0022] The lid 2 has a lid shaft 22 connected to a hinge 141 of the upper frame 14, and is rotatable relative to the upper frame 14. More specifically, the lid shaft 22 of the first lid 20 is attached to the hinge 141 provided on one long side of the upper frame 14, and the lid shaft 22 of the second lid 21 is attached to the hinge 141 provided on the other long side of the upper frame 14.

[0023] A detailed configuration of the first lid body 20 will be described with reference to Fig. 6 to Fig. 8. The configuration of the second lid body 21 is similar to that of the first lid body 20. Therefore, a description of the configuration of the second lid body 21 will be omitted. In addition, in the description of the first lid body 20, the up-down direction is based on a state in which the first lid body 20 is located in the closed position.

[0024] As shown in FIG. 6, the first lid body 20 is a lid body having a generally rectangular shape in a plan view. The first lid body 20 includes a pair of opposing first side edge portions 201, 202 and a pair of opposing second side edge portions 203, 204. The first side edge portions 201, 202 and the second side edge portions 203, 204 are side edge portions that respectively constitute a part of the outer shape of the first lid body 20 when the first lid body 20 is viewed from the upper surface side of the first lid body 20. The second side edge portions 203, 204 are side edge portions that extend in a direction perpendicular to the first side edge portions 201, 202. In this embodiment, the first side edge portions 201, 202 are side edge portions that correspond to the longitudinal direction of the folding container 100, and the second side edge portions 203, 204 are side edge portions that correspond to the lateral direction of the folding container 100. The center portion 205 of the first lid body 20 is a portion where the center of gravity of the first lid body 20 is located. The first lid body 20 has a base portion 23, a liquid flow groove 24, and a tip configuration portion 25.

[0025] The base 23 is located on the first side portion 201 side of the pair of first side portions 201, 202. A lid shaft portion 22 is provided on the base 23. The tip configuration portion 25 is located on the other first side portion 202 side of the pair of first side portions 201, 202. In other words, the tip configuration portion 25 of the first lid 20 is located on the second lid 21 side.

[0026] A liquid flow groove 24 is formed on the upper surface of the first lid body 20. The liquid flow groove 24 constitutes a flow path through which liquid accumulated on the upper surface of the first lid body 20 flows when the first lid body 20 is tilted. The upper surface of the first lid body 20 faces upward when the first lid body 20 is positioned in the closed position. The surface constituting the upper surface of the first lid body 20 includes a surface constituting the liquid flow groove 24. The liquid flow groove 24 is located between the base portion 23 and the tip forming portion 25 in the opposing direction D1 of the pair of first side edge portions 201, 202. The liquid flow groove 24 is constituted by a groove bottom portion 240 and a pair of groove wall portions 241, 243.

[0027] The groove bottom 240 constitutes the bottom of the liquid flow groove 24. A pair of groove walls 241, 243 extend upward from both ends of the groove bottom 240 in the opposing direction D1. The groove wall 241 is located on the first side portion 201 side, and an upper end 242 of the groove wall 241 is connected to the base portion 23. The groove wall 243 is located on the first side portion 202 side, and an upper end 244 of the groove wall 243 is connected to the tip component portion 25.

[0028] The liquid flow groove 24 extends from one of the pair of second side edges 203, 204 to the other of the pair of second side edges 203, 204, and is formed in the first cover 20 so as to be continuous. More specifically, the groove bottom 240 and the pair of groove walls 241, 243 extend from the second side edge 203 to the second side edge 204, and are formed in the first cover 20 so as to be continuous. That is, the liquid flow groove 24 is formed in the first cover 20 without merging with other liquid flow grooves or branching off into other liquid flow grooves along the way. The extension direction of the liquid flow groove 24 is the opposing direction D2 of the pair of second side edges 203, 204.

[0029] As shown in FIG. 7, the width L1 of the liquid flow groove 24 in the facing direction D1 may be half or more of the interval L2 in the facing direction D1 from the first side edge portion 201 to the first side edge portion 202. That is, the width of the liquid flow groove 24 may be larger than that of the first cover body 20. The width L1 of the liquid flow groove 24 is the interval from the upper end 242 of the groove wall portion 241 to the upper end 244 of the groove wall portion 243 in the facing direction D1. The width L1 can also be said to be the interval from the end of the base portion 23 on the first side edge portion 202 side to the end of the tip component portion 25 on the first side edge portion 201 side in the facing direction D1. In this embodiment, the width L1 is preferably half or more of the interval L2, but is not limited thereto. As long as the liquid accumulated on the liquid flow groove 24 can be quickly discharged, the width of the liquid flow groove 24 can be appropriately set according to the size of the first cover body 20.

[0030] Angle θ1 between groove bottom 240 and groove wall 241 and angle θ2 between groove bottom 240 and groove wall 243 are substantially the same angle. Angles θ1 and θ2 are obtuse angles. Note that angles θ1 and θ2 may be different angles or may be substantially 90°. A plurality of ribs 29 are formed on the lower surface of first cover 20.

[0031] The tip constituent portion 25 is inclined downward from the upper end 244 of the groove wall portion 243 toward the first side edge portion 202. That is, the upper surface of the tip constituent portion 25 is an inclined surface that inclines downward from the upper end 244 of the groove wall portion 243 toward the first side edge portion 202. In the up-down direction, the first side edge portion 202 is located lower than the upper end 244 of the groove wall portion 243. Note that the tip constituent portion 25 only needs to have at least a portion of an inclined surface that inclines downward from the first side edge portion 201 toward the first side edge portion 202 so that the first side edge portion 202 is located lower than the upper end 244 of the groove wall portion 243.

[0032] When the first cover body 20 and the second cover body 21 are in the closed position, the tip constituent parts 25 of the first cover body 20 and the second cover body 21 overlap each other in the vertical direction. The tip constituent parts 25 of the first cover body 20 and the second cover body 21 overlap each other in the vertical direction includes at least a part of the tip constituent part 25 of the first cover body 20 and at least a part of the tip constituent part 25 of the second cover body 21 overlapping each other in the vertical direction.

[0033] As shown in FIG. 6, an insertion hole 28 is formed at the boundary between the tip configuration portion 25 and the liquid flow groove 24. A plurality of insertion holes 28 are formed, and each is located near the second side edge portions 203, 204. The insertion holes 28 are formed in the first lid body 20 in correspondence with the formation positions of the through holes 145 formed in the upper frame portion 14 of the container body 1. When the first lid body 20 and the second lid body 21 are in the closed position, a cable tie can be inserted into the insertion hole 28 and the through hole 145. By tying the cable tie inserted into the insertion hole 28 and the through hole 145, the lid body 2 can be maintained in a closed state relative to the container body 1.

[0034] A protrusion 27 that protrudes upward is formed on the upper surface of the first cover 20. More specifically, the protrusion 27 protrudes upward from the groove bottom 240 of the liquid flow groove 24. The protrusion 27 is an example of a protrusion of the present invention. A plurality of protrusions 27 are formed, and each is located in the vicinity of the second side edge portions 203, 204.

[0035] The protrusion 27 has an insertion hole 26 through which the regulating protrusion 143 of the container body 1 is inserted when the first lid 20 is in the closed position. The insertion hole 26 is a through hole that passes through the upper end of the protrusion 27 and penetrates the protrusion 27 in the vertical direction. The protrusion 27 is formed in the first lid 20 in correspondence with the position of the regulating protrusion 143 formed in the upper frame 14 of the container body 1. The entire circumference of the regulating protrusion 143 inserted into the insertion hole 26 is surrounded by the protrusion 27. Note that the protrusion 27 may have a notch through which the regulating protrusion 143 is inserted. The notch is formed from one of the pair of second side edges 203, 204 to the protrusion 27 located in the vicinity of the one second side edge. That is, when a notch is formed in the protruding portion 27 , one second side edge portion side of the restricting protrusion 143 inserted into the notch is not surrounded by the protruding portion 27 .

[0036] As shown in Figs. 6 and 8, the protrusion 27 has a guide shape portion 270. Fig. 8 shows the guide shape portion 270 formed on the protrusion 27 located on the second side edge portion 204 side. The guide shape portion 270 formed on the protrusion 27 located on the second side edge portion 203 side has the same configuration as the guide shape portion 270 shown in Fig. 8. The guide shape portion 270 protrudes from the surface of the protrusion 27 facing the center portion 205 side of the first cover body 20 toward the center portion 205 side. The guide shape portion 270 in Fig. 8 is formed on the surface of the protrusion 27 facing the second side edge portion 203 side. The guide shape portion 270 of the protrusion 27 located on the second side edge portion 203 side is formed on the surface facing the second side edge portion 204 side (the center portion 205 side).

[0037] The tip 273 side of the guide shape portion 270 is tapered. More specifically, the guide shape portion 270 tapers from one of the second side portions 203, 204 to the other second side portion in the opposing direction D2. Specifically, the guide shape portion 270 shown in FIG. 8 tapers from the second side portion 204 to the second side portion 203. The guide shape portion 270 is triangular when viewed in a plan view. In this embodiment, the shape of the guide shape portion 270 when viewed in a plan view is an isosceles triangle. The tip 273 of the guide shape portion 270 may be a right angle, an acute angle, or an obtuse angle when viewed in a plan view. The guide shape portion 270 on the second side portion 203 side tapers from the second side portion 203 side to the second side portion 204 side (the center portion 205 side).

[0038] As shown in FIG. 8, the guide shape portion 270 has guide surfaces 271, 272 extending from the second side edge portion 204 side toward the center portion 205 side of the first cover body 20. In this embodiment, the guide surfaces 271, 272 extend from one second side edge portion of the second side edge portions 203, 204 toward the other second side edge portion in the facing direction D2. The guide surfaces 271, 272 shown in FIG. 8 extend from the second side edge portion 204 side toward the second side edge portion 203 side. The guide surfaces 271, 272 are each connected to the groove bottom portion 240 of the first cover body 20. The guide surface 271 is a surface facing the first side edge portion 201 side, and the guide surface 272 is a surface facing the first side edge portion 202 side. The guide shape portion 270 on the second side portion 203 side has a guide surface that extends from the second side portion 203 side toward the second side portion 204 side (the central portion 205 side).

[0039] The liquid on the first lid body 20 flowing toward the protruding portion 27 is guided by the guide surfaces 271, 272 of the guide shape portion 270 in a direction to be discharged to the outside of the first lid body 20. For example, the guide shape portion 270 shown in FIG. 8 guides the liquid on the first lid body 20 flowing from the center portion 205 side toward the protruding portion 27 toward the second side edge portion 204 side. The guide surface 271 guides the liquid flowing from the center portion 205 side toward the protruding portion 27 toward the first side edge portion 201 side with respect to the protruding portion 27, i.e., toward the lid body shaft portion 22 side. The guide surface 272 guides the liquid flowing from the center portion 205 side toward the protruding portion 27 toward the first side edge portion 202 side with respect to the protruding portion 27, i.e., toward the tip configuration portion 25 side. The guiding shape portion 270 formed on the protrusion 27 on the second side edge portion 203 side guides the liquid flowing from the central portion 205 side toward the protrusion 27 on the second side edge portion 203 side to the second side edge portion 203 side.

[0040] 8 and 9, the upper surface of the guide shape portion 270 has an inclined portion 274. As shown in Fig. 9, the inclined portion 274 has an inclined surface that inclines from the upper end side of the protruding portion 27 toward the upper surface side of the first cover body 20. In this embodiment, the inclined portion 274 is inclined from the upper end of the protruding portion 27 toward the groove bottom portion 240 side. The inclined portion 274 connects the upper end of the protruding portion 27 and the guide surfaces 271, 272.

[0041] [Process of change in state of the foldable container 100] Next, a process of changing the state of the folding container 100 from the assembled state to the folded state will be described. First, the lid body 2 is positioned in the closed position, and the second side wall portion 13 is rotated toward the inside of the folding container 100 with respect to the upper frame portion 14 as shown by the arrow X in FIG. 3. Next, as shown in FIG. 4, the first upper wall portion 121 and the first lower wall portion 122 are rotated toward the inside so that the outer surface of the first lower wall portion 122 and the outer surface of the first upper wall portion 121 are aligned. This causes the folding container 100 to change from the assembled state to the folded state. As shown in FIG. 5, in the folded state, the first side wall portion 12 and the second side wall portion 13 are folded above the bottom wall portion 11 and stored inside the upper frame portion 14.

[0042] [Stacking of Foldable Containers 100] Next, a stacked state in which the folding containers 100 are stacked vertically will be described. As shown in Fig. 10, with the lid body 2 in the closed position, the folding containers 100 in the assembled state can be stacked vertically. The folding containers 100 can also be stacked vertically in the folded state. The folding containers 100 can also be stacked vertically in the assembled state with the lid body 2 in the open position. The upper folding container 100 is supported by the lower folding container 100.

[0043] 11 , when the foldable containers 100 are stacked, the regulating protrusion 143 formed on the container body 1 of the lower foldable container 100 can abut against the rib 112 on the bottom wall 11 of the upper foldable container 100. The abutment of the regulating protrusion 143 of the lower foldable container 100 and the rib 112 of the upper foldable container 100 restricts longitudinal displacement of the upper foldable container 100.

[0044] An upper surface of a hinge portion 141 formed on the upper frame portion 14 of the lower folding container 100 abuts against a lower surface of a long side portion of the lower frame portion 111 of the bottom wall portion 11 of the upper folding container 100. The long side of the upper folding container 100 is supported by the hinge portion 141 of the upper frame portion 14. The hinge portion 141 may abut against a rib formed on the long side portion of the lower frame portion 111. Furthermore, the hinge portion 141 of the lower folding container 100 can abut against a rib 112 of the bottom wall portion 11 of the upper folding container 100 in a stacked state. The abutment between the hinge portion 141 of the lower folding container 100 and the rib 112 of the upper folding container 100 restricts displacement of the upper folding container 100 in the short side direction.

[0045] Here, when the lid body 2 of the folding container 100 is in the closed position, liquid may accumulate on the upper surface of the lid body 2. For example, when the folding container 100 is washed with the lid body 2 closed or when the folding container 100 is installed outdoors, cleaning liquid or rainwater may accumulate on the lid body 2. In such a case, the liquid on the lid body 2 is drained by an operator. The liquid on the lid body 2 can be drained by turning the folding container 100 upside down, but this requires the operation of turning the folding container 100 upside down, which is time-consuming to drain the liquid on the lid body 2. In addition, when the folding container 100 has a certain weight or a certain size, it may be difficult to turn it upside down. For this reason, the operator may drain the liquid on the lid body 2 by tilting the folding container 100, i.e., by tilting the lid body 2.

[0046] According to the folding container 100, the protruding portion 27 is formed with a guiding shape portion 270 having guide surfaces 271, 272. Therefore, the liquid flowing on the first lid body 20 is guided by the guiding shape portion 270 of the protruding portion 27 in a direction to be discharged to the outside of the first lid body 20. More specifically, the liquid flowing in the liquid flow groove 24 is guided by the guiding shape portion 270 in a direction to be discharged to the outside of the first lid body 20. This makes it possible to make it difficult for liquid to remain near the protruding portion 27 formed on the upper surface of the first lid body 20.

[0047] 8, the liquid on the lid flowing from the second side edge portion 203 toward the second side edge portion 204 can be guided to the second side edge portion 204 by the tapered guiding portion 270. This makes it easier to drain the liquid on the first lid 20 toward the second side edge portion 204.

[0048] 8, the guiding shape portion 270 has a triangular shape in plan view, and therefore can guide the liquid on the first lid body 20 toward the second side portion 204. This makes it easier to drain the liquid on the first lid body 20 toward the second side portion 204.

[0049] Furthermore, since the guiding shape portion 270 has the inclined portion 274, the liquid flowing on the upper surface of the guiding shape portion 270 flows along the inclined portion 274 to the groove bottom portion 240 of the first cover. This makes it possible to make it difficult for liquid to accumulate on the guiding shape portion 270.

[0050] Furthermore, by forming the insertion hole 26 in the protruding portion 27, the position of the insertion hole 26 in the vertical direction can be positioned at a position higher than the groove bottom 240 of the first lid body 20 through which the liquid flows. This makes it possible to prevent the liquid on the first lid body 20 from entering the container body 1 through the insertion hole 26.

[0051] In addition, since a series of liquid flow grooves 24 are formed in the lid body 2, by tilting the lid body 2 in the direction in which the liquid flow grooves 24 extend (opposing direction D2), the liquid in the liquid flow grooves 24 flows along the liquid flow grooves 24 and is discharged to the outside of the lid body 2. For example, in the folded state, a worker can easily discharge the liquid on the lid body 2 to the outside by simply holding the folding container 100 in the folded state with both hands and tilting it in the opposing direction D2. In the assembled state, a worker can also discharge the liquid on the lid body 2 by tilting the assembled folding container 100 in the opposing direction D2. Therefore, the liquid on the lid body 2 can be discharged regardless of the folded state and the assembled state, and the liquid on the lid body 2 can be easily discharged even if the folding container 100 has a certain weight or a certain size.

[0052] [Modifications] A modified example of the lid body 2 will be described with reference to FIG. 12. For convenience of description, the same reference numerals are used for members having the same functions as those described in the above embodiment, and the description thereof will not be repeated. The lid body 2 according to the modified example covers the opening 15 formed above the container body 1 with two lid bodies 2, as in the above embodiment. The first lid body 30, which is one of the two lid bodies 2 according to the modified example, will be described. The second lid body, which is the other of the two lid bodies 2 according to the modified example, has the same configuration as the first lid body 30, and therefore its description will be omitted. In the following description, the second lid body, which is not shown and is located on the opposite side to the second lid body 304 shown in FIG. 12, among the pair of second side portions included in the first lid body 30, will be referred to as the second lid portion 303.

[0053] A protrusion 31 and a support portion 32 are formed on the upper surface of the first cover 30. The protrusion 31 protrudes upward from the groove bottom 240 of the groove bottom 240. The protrusion 31 is an example of a protrusion of the present invention. A plurality of protrusions 31 are formed, each of which is formed in the vicinity of the second side edge portions 303 and 304. FIG. 12 shows the protrusion 31 located on the second side edge portion 304 side. Note that the protrusion 31 located on the second side edge portion 303 side has the same configuration as the protrusion 31 shown in FIG. 12, and a description thereof will be omitted.

[0054] The protrusion 31 comes into contact with the rib 112 of the upper folding container 100 in the stack, thereby restricting longitudinal displacement of the upper folding container 100. When the folding containers 100 are stacked, the protrusion 31 does not come into contact with the lower surface of the lower frame 111 of the upper folding container 100. When the first lid body 30 is in the closed position, the restricting protrusion 143 fits into the inner periphery of the protrusion 31. That is, the protrusion 31 is formed on the first lid body 30 so as to correspond to the formation position of the restricting protrusion 143 when the first lid body 30 is in the closed position. The protrusion 31 does not have a notch or an insertion hole through which the restricting protrusion 143 is inserted.

[0055] The support portion 32 is formed at the boundary between the base portion 23 and the liquid flow groove 24. More specifically, the support portion 32 protrudes upward from the upper surface of the base portion 23, the groove wall portion 241, and the groove bottom portion 240. The support portion 32 is an example of a protrusion of the present invention. A plurality of support portions 32 are formed near the second side edge portions 303 and 304. The support portion 32 located on the second side edge portion 303 side has the same configuration as the support portion 32 shown in FIG. 12, and its description is omitted. The support portion 32 is located on each short side portion of the upper frame portion 14 when the first lid body 30 is located in the closed position. The support portion 32 abuts against the lower frame portion 111 of the upper folding container 100 of the stacked upper folding containers, thereby supporting the upper folding container 100. The first lid body 30 may be formed with only one support portion 32. The support portion 32 is housed in the recess 142 when the first cover 30 is in the maximum open position.

[0056] The protruding portion 31 and the supporting portion 32 are formed with guide shape portions 310 and 320, respectively. The guide shape portion 310 is formed on a surface facing the second side edge portion 303 of the protruding portion 31, and the guide shape portion 320 is formed on a surface facing the second side edge portion 303 of the supporting portion 32. The tips 313 and 322 of the guide shape portions 310 and 320 are tapered. That is, the tips 313 and 322 of the guide shape portions 310 and 320 are tapered from one of the second side edge portions 303 and 304 of the first lid body 30 to the other second side edge portion in the facing direction D4 in which the pair of second side edge portions 303 and 304 of the first lid body 30 face each other. 12, the tips 313, 322 of the guiding shape portions 310, 320 taper in the opposing direction D4 from the second side edge portion 304 side to the second side edge portion 303 side. The guiding shape portions 310, 320 are triangular in plan view.

[0057] An inclined portion 314 is formed on the upper surface of the guide shape portion 310. The inclined portion 314 has the same configuration as the inclined portion 274 of the above-mentioned embodiment. The guide shape portion 310 has guide surfaces 311, 312 that extend from the side edge portion side that constitutes the outer shape of the first lid body 30 toward the center portion side of the first lid body 30. The guide surfaces 311, 312 shown in FIG. 12 extend from the second side edge portion 304 side toward the second side edge portion 303 side. The guide surfaces 311, 312 are each connected to the groove bottom portion 240 of the first lid body 30. The guide surface 311 is a surface that faces the first side edge portion 301 side, and the guide surface 312 is a surface that faces the first side edge portion 302 side.

[0058] The guide surface 311 guides the liquid flowing from the center of the first lid 30 toward the protruding portion 31 toward the first side edge portion 301 side relative to the protruding portion 31, i.e., toward the lid shaft portion 22 side. The guide surface 312 guides the liquid flowing from the center of the first lid 30 toward the protruding portion 31 toward the first side edge portion 302 side relative to the protruding portion 31, i.e., toward the tip component portion 25 side. The tip 313 of the guiding shape portion 310 is located on the first side edge portion 302 side relative to the protruding portion 31, i.e., on the tip component portion 25 side, in the facing direction D3 in which the pair of first side edges 301, 302 of the first lid 30 face each other. Therefore, the proportion of the liquid guided by the guide surface 311 increases, and the liquid flowing in the guiding shape portion 310 can be directed toward the first side edge portion 301 side. This allows liquid to be discharged outside the area in which the notches 144 are formed, making it less likely that the discharged liquid will splash onto the hand that is holding the portion of the notch 144 to hold the foldable container 100 in the folded or assembled state.

[0059] The guide shape portion 320 has a guide surface 321 extending from the side edge portion side constituting the outer shape of the first lid body 30 toward the center portion side of the first lid body 30. The guide surface 321 shown in FIG. 12 extends from the second side edge portion 304 side toward the second side edge portion 303 side. The guide surface 321 is connected to the groove bottom portion 240 and the groove wall portion 241. The guide surface 321 is a surface facing the first side edge portion 302 side. The guide surface 321 guides the liquid flowing from the center portion side of the first lid body 30 toward the support portion 32 toward the first side edge portion 302 side with respect to the support portion 32, i.e., toward the tip configuration portion 25 side.

[0060] A tip 322 of the guide shape portion 320 is connected to the groove wall portion 241. That is, a guide surface 321 of the guide shape portion 320 is connected to the groove wall portion 241. An upper surface 323 of the guide shape portion 320 forms a horizontal surface that is continuous with the upper surface of the base 23. Note that the upper surface 323 may have an inclined portion that inclines from the upper end side of the support portion 32 toward the upper surface side (groove bottom portion 240 or groove wall portion 241) of the first cover body 30, like the inclined portion 274 described above.

[0061] By restricting the displacement of the upper stacked foldable container 100 by the protruding portion 31, it is not necessary to form an insertion hole in the protruding portion 31 through which the restricting protrusion 143 formed on the container body 1 is inserted. Therefore, liquid will not enter the container body 1 through the insertion hole formed in the first lid 30. This makes it possible to prevent liquid from entering the container body 1.

[0062] Other embodiments In the above-described embodiment, the opening 15 of the container body 1 of the folding container 100 is closed by two lid bodies 2 (the first lid body 20 and the second lid body 21), but the present invention is not limited to this configuration. For example, the opening 15 of the container body 1 may be closed by one lid body 2.

[0063] Also, the lid body 2 is provided rotatably relative to the container body 1, but is not limited to this configuration. The lid body 2 may not be rotatable relative to the container body 1. For example, the lid body 2 may be attached to the top of the container body 1 by fitting a fitting portion of the lid body 2 into a fitting portion provided on the top of the container body 1, and the opening 15 may be closed by the lid body 2.

[0064] Furthermore, the lid body 2 of the present invention is provided to the foldable container 100 that can be changed into a folded state, but is not limited to this configuration. For example, the lid body 2 of the present invention may be provided to a container that cannot be folded.

[0065] In addition, when the first lid body 20 and the second lid body 21 are positioned at the closed position, the tip constituent parts 25 of the first lid body 20 and the second lid body 21 overlap each other in the vertical direction, but this is not limited to the configuration. When the first lid body 20 and the second lid body 21 are positioned at the closed position, the first side edge part 202 of the first lid body 20 and the first side edge part on the tip constituent part 25 side of the second lid body 21 may face each other. Note that, when the first side edge part 202 and the first side edge part 212 face each other, the first side edge part 202 and the first side edge part 212 may or may not abut each other in the horizontal direction of the first lid body 20 and the second lid body 21.

[0066] Furthermore, although the folding container 100 includes an upper frame portion 14, the present invention is not limited to this configuration. The folding container 100 does not necessarily have to include an upper frame portion 14. In this case, the first side wall portion 12 and the second side wall portion 13 can be folded above the bottom wall portion 11 by rotating them relative to the bottom wall portion 11, and are stored inside the lower frame portion 111.

[0067] Moreover, the liquid flow groove 24 is not limited to a configuration including the groove bottom 240 and the groove wall portions 241, 243. For example, the liquid flow groove 24 may be a groove having a U-shaped or V-shaped cross section. The liquid flow groove 24 may not be formed in the cover body 2. The groove bottom 240 of the liquid flow groove 24 may be inclined so as to descend toward one of the second side edges of the pair of second side edges 203, 204 in the facing direction D2. The groove bottom 240 of the liquid flow groove 24 may be inclined so as to descend toward the second side edge portion 203 side and the second side edge portion 204 side to the second side edge portion 204 side, with the middle position in the facing direction D2 as the boundary.

[0068] In addition, the above-mentioned guide shape portions 270, 310, 320 are formed on parts of the protruding portions 27, 31 and the supporting portion 32, respectively, but are not limited to such a configuration. The guide shape portions 270, 310, 320 may be formed so as to entirely surround the protruding portions 27, 31 and the supporting portion 32, respectively.

[0069] In addition, the guide shape portions 270, 310, and 320 are triangular in plan view, but are not limited to this configuration. The guide shape portions 270, 310, and 320 may be curved on an arc in plan view. That is, the guide surface of the guide shape portions 270, 310, and 320 may be arc-shaped.

[0070] The guide shape portion 270 may be formed on the protruding portion 27 so as to extend to a position substantially equal to the central portion 205 of the first lid body 20 in the facing direction D2, or to a position beyond the central portion 205. That is, the guide shape portion 270 may be formed so that the tip 273 of the guide shape portion 270 is located near the central portion 205 in the facing direction D2, or at a position beyond the central portion 205. Also, the guide shape portion 270 of the protruding portion 27 located on the second side edge portion 204 side and the guide shape portion 270 of the protruding portion 27 located on the second side edge portion 203 side may be configured to be connected to each other. Note that the guide shape portions 310 and 320 formed on the protruding portion 31 and the support portion 32 of the first lid body 30 may be configured similarly to the guide shape portion 270 described in this paragraph.

[0071] [Additional Notes] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0072] 1 Container body 2 Lid 15 Aperture 20 First cover 21 Second cover 26 Insertion hole 27 Protrusion 100 Folding container 205 Central part 270 Guide shape section

Claims

1. A lid for closing an opening formed in an upper portion of a container body, A protrusion protruding upward from the upper surface, A lid body, wherein a guide shape portion is formed on at least the surface of the protrusion facing the center of the lid body, which guides liquid on the lid body flowing toward the protrusion in a direction to discharge it to the outside of the lid body.

2. The cover includes a pair of opposing first side portions and a pair of opposing second side portions, The lid body described in claim 1, wherein the guiding shape portion has a guide surface extending from one of the pair of second side portions toward the other of the pair of second side portions in the opposing direction of the pair of second side portions, and the guide surface guides liquid on the lid body flowing toward the protrusion in a direction to be discharged outside the lid body.

3. The lid body according to claim 2 , wherein the guide shape portion has a tapered shape that tapers from the one second side edge portion toward the other second side edge portion in the opposing direction.

4. The lid according to claim 3 , wherein the guide shape portion has a triangular shape or a curved shape when viewed from above.

5. The lid body according to claim 1 , wherein an upper surface of the guiding shape portion has an inclined portion that inclines from an upper end side of the protrusion toward an upper surface side of the lid body.

6. A container body; A container comprising the lid body according to any one of claims 1 to 5, The container can be stacked in a vertical direction, The container body is formed with a restricting protrusion capable of restricting displacement of the upper container when the containers are stacked, The container, wherein the protrusion has a notch or an insertion hole through which the regulating protrusion is inserted when the lid is in a closed position in which the opening is closed.

7. A container body; A container comprising the lid body according to any one of claims 1 to 5, The container can be stacked in a vertical direction, The protrusion is capable of restricting displacement of the upper container when the containers are stacked.

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