Lid

Abstract

To restrict a breakage of a swollen part.SOLUTION: A bank part 21 with a swollen outer peripheral part is provided at an upper wall 20 in a lid body 10 of the disclosure. An end of a long side swollen part 23 of the bank part 21 is arranged at an intermediate position in a longitudinal direction of the lid body 10 and is blocked by an end wall 24. At the end of the long side swollen part 23, an introversion inclined wall 25 intersecting diagonally with an upper wall 21A, an inner wall 21B and the end wall 24 of the long side swollen part 23 is provided. The introversion inclined wall 25 is inclined to the longitudinal direction, a width direction and a height direction of the long side swollen part 23 and faces upward and diagonally inside.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a lid body having a hollow structure. [Background technology]

[0002] Conventionally, as this type of lid, there is known one that has a pair of bulging portions with a rectangular cross section that extend parallel to each other on a pair of outer edge portions of the upper surface (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 7-242249 (see paragraph

[0018] and Figure 1) Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described conventional lid, it is required to suppress damage to the bulging portion. [Means for solving the problem]

[0005] The invention of claim 1, made to achieve the above object, is a lid body having a rectangular shape in plan view and a hollow structure, and having a pair of bulging portions with a rectangular cross section extending parallel to each other on a pair of outer edge portions of the upper surface, one end of the bulging portion being located midway between the pair of outer edge portions and closed by an end wall, and having an inwardly inclined wall at one end of the bulging portion that intersects obliquely with the upper wall, inner wall and one end wall of the bulging portion and is inclined in the longitudinal, width and height directions of the bulging portion.

[0006] The invention of claim 2 is a lid body according to claim 1, wherein the one end wall is provided with a one end inclined portion that is inclined so as to move away from the upper wall in the horizontal direction as it extends downward from the upper end.

[0007] A third aspect of the present invention provides the lid body according to the second aspect, wherein the one end inclined portion extends to an upper surface of the lid body.

[0008] A fourth aspect of the present invention is the lid according to any one of the first to third aspects, wherein the inwardly inclined wall extends to an upper surface of the lid.

[0009] A fifth aspect of the present invention is the lid according to the fourth aspect, wherein the inwardly inclined wall is positioned entirely on a single plane or curved surface.

[0010] The invention of claim 6 is a lid body described in any one of claims 1 to 5, comprising a first bulge portion arranged on a pair of first outer edge portions and having the inwardly inclined wall, and a second bulge portion arranged on a pair of second outer edge portions, wherein the inwardly inclined wall is arranged at an end of one of the first bulge portions farther from the second outer edge portion and is arranged closer to the other second outer edge portion than the inner wall of the second bulge portion arranged on one of the second outer edge portions.

[0011] The invention of claim 7 is the lid according to any one of claims 1 to 6, which is a blow-molded product. [Effects of the Invention]

[0012] In the lid of claim 1, an inwardly inclined wall is formed at one end of the bulge, which intersects obliquely with the upper wall, inner wall, and one end wall of the bulge, so that damage to the bulge can be suppressed more effectively than if the corner formed by the upper wall, inner wall, and one end wall were sharp. In particular, if one end of the bulge is located halfway along the outer edge, when sliding an object using the pair of bulges as a guide, it is conceivable that the object may come into contact with the inner corner of one end of the bulge, causing damage to the bulge; however, the lid of claim 1 prevents such a situation.

[0013] For example, if the object to be placed has a lower surface fitting portion on its underside that fits into the inside of a pair of bulges, and when the object to be placed on the lid, the outer edge of the underside of the object abuts against the pair of bulges and the lower surface fitting portion fits into the inside of the pair of bulges while floating above the top surface of the lid, when the object to be placed is slid on the lid, the inward inclined wall guides the outer edge of the underside of the object onto the pair of bulges, and the lower surface fitting portion of the object is guided inside the pair of bulges.

[0014] In the lid body of claim 2, one end wall is provided with a one-end inclined portion that inclines horizontally away from the upper wall as it moves downward from the upper end, so that when an object is slid on the lid body, even if the object abuts one end of the bulge portion outside the inward inclined wall, the force is more likely to escape upward, preventing damage to the bulge portion.

[0015] In the lid of claim 3, the one end inclined portion extends to the upper surface of the lid, so even if an object comes into contact with the lower part of the bulging portion, the force is easily dissipated upward, further preventing damage to the bulging portion.

[0016] In the lid of claim 4, the inwardly inclined wall extends to the upper surface of the lid, so that even if an object comes into contact with the lower part of the bulging portion, the force is more likely to escape upward, further preventing damage to the bulging portion.

[0017] The inwardly inclined wall may be formed of a plurality of flat or curved surfaces, or may be formed of a single flat or curved surface, as in the lid of claim 5 .

[0018] In the lid of claim 6, when the object to be placed is slid toward the second bulge disposed on one of the second outer edges, if the sliding direction of the object is misaligned, the object abuts against the inwardly inclined wall and is guided in the correct direction. Then, the object abuts against the second bulge, completing the placement of the object.

[0019] The lid may be manufactured by combining a plurality of injection-molded parts, or may be manufactured by blow molding as in claim 7. When manufactured by blow molding, the corners of the bulging portion tend to become thin, but by providing an inwardly inclined wall that intersects obliquely with the upper wall, inner wall, and one end wall, as in the lid of claim 1, it is possible to prevent one end of the bulging portion, which is likely to come into contact when sliding an object placed on it, from becoming thin, and damage to the bulging portion is prevented. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of a container having a lid according to the present disclosure; [Figure 2] A perspective view of the container body [Figure 3] Enlarged cross-sectional view of the container [Figure 4] A perspective view of the bottom of the container body [Figure 5] Perspective view of the lid [Figure 6] Lower perspective view of the lid [Figure 7] Perspective cross-sectional view of the lid [Figure 8] A perspective view of containers stacked on top of each other [Figure 9] Cross-sectional view of containers stacked on top of each other [Figure 10] Enlarged cross-sectional view of containers stacked on top of each other [Figure 11] 1 is a perspective view illustrating a slide stacking operation of a container; [Figure 12] A perspective cross-sectional view illustrating the slide stacking operation of the container. [Figure 13] Cross-sectional view to explain the slide stacking operation of the container [Figure 14] Enlarged view of a lid according to a modified example [Figure 15] Image diagram of a lid according to a modified example DETAILED DESCRIPTION OF THE INVENTION

[0021] A container 100 including a lid 10 of the present disclosure will be described below with reference to Figures 1 to 13. As shown in Figure 1, the container 100 includes a container body 50 that is rectangular in plan view, and a lid 10 that closes an upper surface opening 50K of the container body 50. Both the container body 50 and the lid 10 have a hollow structure (see Figure 3), and the internal space can be filled with a heat insulating material (for example, urethane foam, etc.).

[0022] 2 and 3, the container body 50 is formed by assembling a lower member 51 and an upper member 60. The lower member 51 is box-shaped with an outer wall 53 rising from the outer edge of the outer bottom wall 52. The upper member 60 has an inner wall 63 rising from the outer edge of an inner bottom wall 62 located above the outer bottom wall 52 of the lower member 51, an upper end wall 64 protruding laterally from the upper end of the inner wall 63, and a fitting portion 65 hanging down from the outer edge of the upper end wall 64. The upper end wall 64 on the short side of the container body 50 is wider than the upper end wall 64 on the long side of the container body 50.

[0023] The fitting portion 65 of the upper member 60 has a double structure consisting of an inner fitting wall 65A and an outer fitting wall 65B. The upper end of the outer wall 53 of the lower member 51 fits between the inner fitting wall 65A and the outer fitting wall 65B, whereby the upper member 60 is assembled to the lower member 51 to form the container body 50 having a hollow structure.

[0024] A step 63A is formed at the upper end of the inner wall 63 of the upper member 60, making the opening at the upper portion larger than the opening at the lower portion. In addition, the horizontal center of the outer wall 53 on the short side of the lower member 51 forms a recess 54 that is recessed from a position near the upper end to the lower end. The lower member 51 has a finger hook 55 formed by extending the inner side (inside) of the upper end of this recess 54 upward (see Figure 4).

[0025] 3 and 4, a lower surface fitting portion 52K is formed on the lower surface (outer bottom wall 52) of the container body 50. The lower surface fitting portion 52K is formed by bulging downward the entire portion of a square shape in plan view that is inward from the outer edge of the outer bottom wall 52. Note that reinforcing ribs 52L extending in a lattice pattern are formed on the lower surface of the lower surface fitting portion 52K.

[0026] The lid 10 shown in Fig. 5 is a blow-molded product, and is a rectangular plate with a hollow structure. As shown in Figs. 3 and 6, a lid fitting portion 12 that bulges downward is formed on the lower wall 11 of the lid 10. The planar shape of the lid fitting portion 12 corresponds to the top opening 50K of the container body 50 (the opening above the step portion 63A in the inner wall 63 of the upper member 60).

[0027] The lid fitting portion 12 extends along the outer edge and has a fitting frame 12A that fits inside the top opening 50K of the container body 50, and a fitting component 12B inside the fitting frame 12A. The fitting frame 12A has a rectangular groove-like cross section, and the fitting component 12B has a bellows-like shape, with multiple band plates extending in the longitudinal direction of the lid 10 connected at different angles in the short direction. The lower end of the fitting frame 12A is located lower than the lower end of the fitting component 12B.

[0028] 3, when the lid 10 is attached to the container body 50, the lid fitting portion 12 fits into the inside of the top opening 50K of the container body 50, stabilizing the closed state. At this time, the lower end of the fitting frame 12A of the lid fitting portion 12 comes close to the stepped portion 63A of the container body 50. In other words, the portion below the stepped portion 63A forms the storage space for the container body 50, and the worker can use the stepped portion 63A as a guide to adjust the storage capacity.

[0029] 1 and 6, handles 16 are formed at both longitudinal ends of the lid 10 by recessing the ridge between the bottom wall 11 and the side wall 15. By placing a hand on these handles 16, the lid 10 can be easily removed from the container body 50.

[0030] 3 and 5, the upper wall 20 of the lid 10 is provided with a bank portion 21 that bulges out from the outer periphery. The bank portion 21 has a generally rectangular cross section and includes an upper wall 21A, an inner wall 21B, and an outer wall 21C. The upper wall 21A extends horizontally, the inner wall 21B extends generally vertically, and the outer wall 21C extends flush with the side wall 15 of the lid 10 and then curves.

[0031] Of the embankment portion 21, the short side bulge portion 22 (corresponding to the "second bulge portion" in the claims) arranged on the short side of the lid body 10 (corresponding to the "second outer edge portion" in the claims) is wider than the long side bulge portion 23 (corresponding to the "first bulge portion" in the claims) arranged on the long side of the lid body 10 (corresponding to the "first outer edge portion" in the claims).

[0032] The bank portion 21 has recesses 21M formed at both ends of a pair of long sides. The recesses 21M open the bank portion 21 in the inward and outward directions, and their bottom surfaces are flush with the upper surface of the lid 10 (the upper surface inside the bank portion 21). The recesses 21M are capable of receiving a band (not shown), which prevents the band from slipping when the container 100 is fastened with the band. Furthermore, water can be drained from the recesses 21M when the lid 10 is washed.

[0033] Short-side bulges 22 extend along the entire short side of bank portion 21, while recesses 21M divide each long side of bank portion 21 into three long-side bulges 23. Of the three long-side bulges 23, the long-side bulges 23 at both ends are connected to short-side bulges 22. In other words, the long-side bulges 23 at both ends extend from both ends of short-side bulges 22 in the longitudinal direction of lid 10, with the ends positioned more inward in the longitudinal direction of lid 10 than the inner walls 21B of the short-side bulges 22.

[0034] Next, the shape of each end of the long-side bulge 23 will be described. As shown in Figures 5 and 7, the end of the long-side bulge 23 is closed by an end wall 24 (corresponding to the "one end wall" and "one end inclined portion" in the claims) extending in the short direction of the lid 10. The end wall 24 is inclined downward from its upper end to the upper surface of the lid 10 (the bottom surface of the recess 21M), so as to move away from the upper wall 21A in the horizontal direction.

[0035] In the lid 10 of this embodiment, an inwardly inclined wall 25 is provided at the end of the long-side bulge portion 23, and the inwardly inclined wall 25 intersects obliquely with the upper wall 21A, the inner wall 21B, and the end wall 24. The inwardly inclined wall 25 is rectangular and has an upper side 25A that is the end of the upper wall 21A, an inner side 25B that is the end of the inner wall 21B, an outer side 25C that is the end of the end wall 24, and a lower side 25D that is located on the upper surface of the lid 10. The inwardly inclined wall 25 is inclined with respect to the longitudinal, width, and height directions of the long-side bulge portion 23, and faces upward and diagonally inward. The entire inwardly inclined wall 25 is disposed on a flat surface, but its outer edge (the portion connecting with the upper wall 21A, the inner wall 21B, the end wall 24, and the upper surface of the lid 10) is curved.

[0036] Due to this inwardly inclined wall 25, the end of the long side bulge portion 23 has a shape in which a pentahedron is cut out to include the corner (symbol R in Figure 7) where the upper wall 21A, the inner wall 21B and the end wall 24 extend and intersect.

[0037] 8 and 9, when the containers 100 are stacked on top of each other, the lower surface fitting portion 52K of the container body 50 of the upper container 100 fits into the inside of the bank portion 21 of the lid body 10 of the lower container 100, thereby preventing lateral displacement of the upper and lower containers 100. Furthermore, when the containers 100 are stacked on top of each other, as shown in Fig. 10, the outer edge of the lower surface (outer bottom wall 52) of the container body 50 abuts against and is supported by the upper wall 21A of the bank portion 21 of the lid body 10, and the lower end of the lower surface fitting portion 52K of the container body 50 is raised above the upper surface (upper wall 20) of the lid body 10.

[0038] The containers 100 can be stacked by lowering the upper container 100 onto the lower container 100 from directly above, or by sliding the upper container 100 onto the lower container 100 (so-called "slide stack operation"). The slide stack operation of the containers 100 will be described in detail below.

[0039] First, the worker tilts the upper container 100 with one longitudinal end slightly lowered and butts its lower end against a longitudinally intermediate portion of the lower container 100. At this time, for example, when one end of the upper container 100 is lowered onto a portion of the lower container 100 where the central long-side bulges 23 face each other, one end of the outer edge of the lower surface (outer bottom wall 52) of the upper container 100 comes into contact with the upper wall 21A of the long-side bulges 23 of the lower container 100. Furthermore, one end of the lower surface fitting portion 52K of the upper container 100 fits between the facing long-side bulges 23 and is raised above the upper surface (upper wall 20) of the lid 10 of the lower container 100.

[0040] The worker then pushes the upper container 100 toward the short-side bulge 22 on one end of the lower container 100, and slides the upper container 100. At this time, one end of the underside fitting portion 52K of the upper container 100 fits between the opposing long-side bulges 23 to act as a sliding guide, thereby restricting lateral displacement during sliding. The upper container 100 may be slid with the other end of the upper container 100 lifted, or with the underside fitting portion 52K of the upper container 100 supported by the short-side bulge 22 on the other end of the lower container 100.

[0041] When one end of the upper container 100 reaches one end of the central long-side bulging portion 23, the portion of the upper container 100 that abuts against one end of the upper wall 21A of the long-side bulging portion 23 then shifts toward the other end, causing one end of the upper container 100 to lower. Then, as shown in Figures 11 and 12, one end of the lower surface fitting portion 52K of the upper container 100 abuts against the upper surface (upper wall 20) of the lid 10 of the lower container 100.

[0042] When the upper container 100 is further slid toward one end, one end of the outer edge of the lower surface of the upper container 100 abuts against the end of the long-side bulge 23 at one end. If the upper container 100 continues to slide in this manner, because the end wall 24 and the inwardly inclined wall 25 are inclined upward, one end of the outer edge of the lower surface of the upper container 100 is guided by this inclination and rides up onto the long-side bulge 23 (see FIG. 13 ). Then, the lower-surface fitting portion 52K of the upper container 100 fits between the long-side bulge portions 23 at one end. If the sliding direction is misaligned and one end of the lower-surface fitting portion 52K abuts against the inwardly inclined wall 25, the lower-surface fitting portion 52K is guided inward by the inward inclination of the inwardly inclined wall 25, and the sliding direction is corrected.

[0043] The upper container 100 is slid further toward the back, and when one end of the lower surface fitting portion 52K of the upper container 100 abuts against the short side bulge portion 22 at the back, the other end of the upper container 100 is lowered, and the upper and lower containers 100 are stacked one on top of the other.

[0044] This completes the configuration of the lid 10 of this embodiment. Next, we will explain the effects of the lid 10. As described above, the lid 10 allows the upper container 100 to slide in the longitudinal direction, thereby stacking the containers 100 one on top of the other.

[0045] Incidentally, when the upper container 100 is slid, if it comes into contact with the end of the long-side bulge portion 23 of the lower container 100, the end of the long-side bulge portion 23 may be damaged, causing a hole in the lid 10. In contrast, the lid 10 of this embodiment has an inwardly inclined wall 25 that is inclined relative to the upper wall 21A, the inner wall 21B, and the end wall 24 at the end of the long-side bulge portion 23, so that the end of the long-side bulge portion 23 is more prevented from being damaged than when the end of the long-side bulge portion 23 is angular.

[0046] Furthermore, due to the inclination of the inward inclined wall 25, one end of the outer edge of the lower surface of the upper container 100 is guided onto the long side bulge portion 23, and the lower surface fitting portion 52K of the upper container 100 is guided between the opposing long side bulge portions 23, so that the sliding and stacking operation of the containers 100 can be performed smoothly.

[0047] Furthermore, depending on the inclination of the container 100 and the roundness of the corners, it is conceivable that the upper container 100 will abut against the end wall 24 rather than the inwardly inclined wall 25, but because the end wall 24 is also inclined, damage to the end wall 24 is also prevented. The end wall 24 also guides one end of the outer edge of the lower surface of the upper container 100 onto the long-side bulge 23. Moreover, because the inwardly inclined wall 25 and the end wall 24 extend to the top surface of the lid 10, even if the upper container 100 abuts against the lower part of the long-side bulge 23, the force is more likely to escape upward, further preventing damage to the long-side bulge 23.

[0048] The lid 10 of this embodiment is manufactured by blow molding. In the case of a blow-molded product, the corners of the bulging portion such as the bank portion 21 tend to become thin, but by providing inwardly inclined walls 25 at the ends of the bulging portion (long-side bulging portion 23) as in the lid 10, the ends that are likely to come into contact when the container 100 is slid are prevented from becoming thin, and damage to the long-side bulging portion 23 is prevented.

[0049] [Other embodiments] (1) As shown in Figures 14 and 15 (illustrations in which the rounded portions are omitted), the end wall 24 may have only an upper portion (the "inclined portion 24A" in Figures 14 and 15) that is inclined, and a lower portion (the "vertical portion 24B" in Figures 14 and 15) that is vertical. In this case, the band (not shown) is prevented from slipping when the band is attached.

[0050] (2) The entire inwardly inclined wall 25 may be curved.

[0051] (3) The inwardly inclined wall 25 may be made up of a plurality of surfaces (which may be flat or curved).

[0052] (4) The lower end of the inwardly inclined wall 25 may be located at a height midway between the upper wall 21A and the top surface of the lid 10. In other words, the inner wall 21B and the end wall 24 may be directly connected to each other at the lower end of the long-side bulge 23.

[0053] (5) The short side portions of the bank portion 21 may also be divided into a plurality of short side bulges 22.

[0054] (6) The entire bottom surface of the container 100 may be configured to fit inside the bank portion 21 .

[0055] (7) The lower surface fitting portion 52K does not have to be formed on the lower surface of the container 100. Furthermore, objects other than the container 100 may be stacked in a state where they are fitted inside the bank portion 21.

[0056] (8) The inwardly inclined wall 25 may be adjacent to the outer wall 21C, or may not be adjacent to the outer wall 21C.

[0057] (9) The configurations of the long-side bulge portion 23 and the short-side bulge portion 22 are not limited to those in the above embodiment. For example, the long-side bulge portion 23 and the short-side bulge portion 22 at the ends do not have to be continuous, and the short side portion of the bank portion 21 may also be divided into multiple short-side bulge portions 22. Furthermore, the long-side bulge portion 2 may be disposed only in the center of the lid 10 in the longitudinal direction, or only at the ends.

[0058] Although the present specification and drawings disclose specific examples of the technology included in the scope of the claims, the technology described in the claims is not limited to these specific examples, but also includes various modifications and variations of the specific examples, and also includes parts of the specific examples taken out alone. [Explanation of symbols]

[0059] 10 Lid 20 Upper Wall 21 Bank 21A Upper wall 21B Inside wall 21C Outside wall 22 Short side bulge (second bulge) 23 Long side bulge (first bulge) 24 End wall (one end wall, one end slope) 25 Inward slope wall 50 Container body 52. Outer bottom wall 52K Lower Fitting Part 100 containers

Claims

1. A lid body having a rectangular hollow structure in a plan view, the lid body having a pair of bulging portions having a rectangular cross section extending parallel to each other on a pair of outer edge portions of an upper surface, One end of the bulging portion is located midway between the pair of outer edge portions and is closed by an end wall, A lid body having an inwardly inclined wall at one end of the bulge portion that intersects obliquely with the upper wall, inner wall, and one end wall of the bulge portion and is inclined with respect to the longitudinal, width, and height directions of the bulge portion.

2. 2. The lid according to claim 1, wherein the one end wall has an inclined end portion that is inclined downward from the upper end so as to move away from the upper wall in the horizontal direction.

3. The lid according to claim 2 , wherein the one end inclined portion extends to an upper surface of the lid.

4. The lid according to any one of claims 1 to 3, wherein the inwardly inclined wall extends to an upper surface of the lid.

5. The lid according to claim 4, wherein the inwardly inclined wall is positioned entirely on a single plane or curved surface.

6. a first bulge portion disposed on a pair of first outer edge portions and having the inwardly inclined wall; and a second bulge portion disposed on a pair of second outer edge portions, A lid body described in any one of claims 1 to 5, wherein the inwardly inclined wall is arranged at an end of one of the first bulges farther from the second outer edge portion and is arranged closer to the other second outer edge portion than the inner wall of the second bulge portion arranged on one of the second outer edge portions.

7. The closure according to any one of claims 1 to 6, which is a blow-molded product.

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