JP2008280059A - Case with lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a case having a lid capable of preventing thin-plate-like cargoes from being held between the lid and a case body and being damaged. <P>SOLUTION: A case 10 with a lid of this invention provides an increased strength of a case body 11 while a space between a bottom wall 13 and a side wall 14 of the case body 11 is communicated with a plurality of inter-case protrusions 20. In addition, since a lid 30 is formed with an inner groove 35 in addition to an annular groove 31, a strength of the lid 30 is also increased. Then, these increased strengths restrict the lid 30 and the case body 11 from being deformed. With this arrangement, a sheet W is prevented from being held between the lid 30 and the case body 11 and being damaged. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a case with a lid comprising a resin case main body having an open upper surface and a resin lid body capable of closing the upper surface opening of the case main body, and in particular, a plurality of sheet-like packages such as sheets and films. The present invention relates to a case with a lid for storing and transporting in layers.

In this type of conventional case with a lid, an upper annular flange protrudes laterally from the upper end of the side wall of the case body, and the outer edge of the lid is placed on the upper surface of the upper annular flange to place the lid on the case. The structure was assembled to the main body (see, for example, Patent Document 1).
Registered utility model publication 2534050 (Fig. 1)

  By the way, in the case with the conventional lid described above, for example, when a plurality of sheets are stacked and conveyed and conveyed by a vehicle, when the vehicle is accelerated or decelerated, a bundle of sheets pushes the side wall of the case main body from the inside to hold the case main body. There was some deformation. As a result, a gap between the lid and the case main body is widened, and a situation in which the sheet warped upward during acceleration / deceleration of the vehicle is caught between the lid and the case main body and may be damaged.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a case with a lid that can prevent a thin plate-shaped load from being pinched between a lid and a case body and being damaged.

  The case with a lid according to the invention of claim 1 made to achieve the above object comprises a resin case body having an upper surface opened, and a resin lid body capable of closing the upper surface opening of the case body. The upper annular flange protrudes laterally from the upper end of the side wall of the case body, and the upper annular flange is received at the outer edge of the lid by bending the resin wall constituting the lid into a groove shape with an open bottom surface. In the case with a lid formed with a possible annular groove, there are a plurality of protrusions in the case that are arranged at intervals across the edge of the bottom surface in the case body and communicate between the bottom wall and the side wall of the case body. The upper wall of the inner protrusion of the case is provided on the inner side of the side wall of the case body, extending upwardly in parallel with the upper annular flange, and on the lower side of the upper side of the case body wall. Projected from the top to the upper belt A belt-like wall, and a stepped wall that communicates between the upper belt-like wall and the lower belt-like wall, and a part of the side wall of the protrusion in the case is disposed at a position offset from the side wall of the case body to the inside. It is an offset wall that is flush between adjacent projecting parts in the case. At the position near the outer edge of the lid, the upper belt-like part is formed by bending the resin wall that forms the lid into a groove shape with an open bottom surface. It is characterized in that an inner groove that can receive the above is formed.

  According to a second aspect of the present invention, in the case with a lid according to the first aspect, there are provided a plurality of attachments which are inserted from above between adjacent case protrusions and are immovably engaged in the horizontal direction. The attachment is characterized in that it is provided with an additional offset wall that is disposed at a position offset to the inside of the offset wall and is flush between adjacent attachments.

  A third aspect of the present invention is the case with a lid according to the first or second aspect, wherein a plurality of lower surface protrusions protrude from the lower surface of the case main body and come into contact with the floor surface when the case main body is placed on a flat floor surface. And a tool insertion space that can be inserted into the side of the case body and can be inserted from the side, and a lid projecting from the top surface of the lid, When the case main body is placed on the body, the case main body is positioned in the horizontal direction, and a positioning protrusion arranged at a position not closing the side opening of the tool insertion space is provided. Has characteristics.

  According to a fourth aspect of the present invention, in the case with the lid according to any one of the first to third aspects, the resin wall constituting the lid is bent into a groove shape with an open bottom surface, and the lateral center of the lid is formed. The longitudinal reinforcement groove extending over the entire longitudinal direction of the lid body and the resin wall constituting the lid body are bent into a groove shape with an open bottom surface, at the longitudinal center of the lid body It is characterized in that it is disposed and has a horizontally long reinforcing groove extending over the entire lateral direction of the lid.

  According to a fifth aspect of the present invention, in the case with the lid according to any one of the first to fourth aspects, a plurality of clip engaging portions are provided on an outer edge portion of the lid body, and the lid body is provided on the plurality of clip engaging portions. A plurality of lid fixing clips that are mounted and engaged from the side are provided, and these lid fixing clips are characterized in that they are provided with flange engaging pieces that overlap and engage with the lower surface of the upper annular flange.

[Invention of Claim 1]
According to the configuration of the first aspect, the bottom wall and the side wall of the case body are connected to each other by the plurality of case protrusions, and the strength of the case body is increased. Further, since the inner groove is formed in addition to the annular groove in the lid, the strength of the lid is also increased. And the deformation | transformation of a cover body and a case main body is suppressed by the increase in these intensity | strengths, and the expansion of the clearance gap between them is also suppressed. Thereby, when a plurality of thin plate-like loads are stacked and accommodated in the case main body, it is possible to prevent the thin plate-like load from being damaged between the lid and the case main body. Moreover, in the structure of this invention, the offset wall of each case protrusion is addressed to the edge of a thin-plate-like load, and these loads can be positioned within a case main body.

[Invention of claim 2]
In the structure of Claim 2, by attaching an attachment between adjacent case protrusions, the additional offset wall of the attachment is disposed at a position offset inward from the offset wall of the case protrusion. As a result, when a plurality of relatively small-sized sheet-like packages are accommodated, the relatively small-sized sheet-shaped packages can be positioned by the additional offset wall.

[Invention of claim 3]
According to the configuration of claim 3, when the case main body is placed on a flat floor surface, a plurality of lower surface protrusions protruding from the lower surface of the case main body come into contact with the floor surface, and the tool is sandwiched between the lower surface protrusions. The insertion space is open to the side of the case body. Accordingly, the case-like transfer tool can be inserted into the tool insertion space from the side and the case body can be lifted upward from the floor surface. When a plurality of cases with lids are stacked, the positioning protrusions of the lid body position the case main body on the lid body in the horizontal direction. And since the positioning protrusion is arranged at a position that does not close the side opening of the tool insertion space, even if a plurality of cases with lids are stacked, a projecting piece is formed in the tool insertion space on the lower surface of the case body. This case can be inserted from the side to lift the case body upward from the lower lid.

[Invention of claim 4]
As in the configuration of claim 4, the vertically long reinforcing groove and the horizontally long reinforcing groove for reinforcing the lid body are formed by bending the resin wall constituting the lid body into a groove shape having an open bottom surface. Compared with the case where the rib is provided, the stress at the time of contact with the load is relieved, and damage to the load can be prevented.

[Invention of claim 5]
According to the configuration of claim 5, when the lid is assembled to the case body and the lid fixing clip is attached to the clip engaging portion of the lid, the flange engaging piece provided on the lid fixing clip is the upper annular flange of the case body. The outer edge of the lid is fixed to the upper annular flange by being overlapped with the lower surface.

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a case 10 with a lid according to the present embodiment includes a case body 11 having an open upper surface and a square planar shape, and a lid body 30 capable of closing the upper surface opening 12 of the case body 11. The case body 11 is provided with a plurality of attachments 40 in a detachable manner, and the lid body 30 is provided with a plurality of lid fixing clips 50 in a detachable manner. The case body 11, the lid body 30, the attachment 40, and the lid fixing clip 50 are all made of synthetic resin.

  The case body 11 is provided with an upper annular flange 15 projecting laterally from the upper end portion of the side wall 14 and a lower annular flange 16 projecting laterally from the lower end portion of the side wall 14. A plurality of vertical ribs 17 protruding from the outer surface of the side wall 14 are interposed between the upper annular flange 15 and the lower annular flange 16.

  As shown in FIG. 2, a lattice-shaped lower surface rib 19 is formed on the lower surface 18 of the case body 11, and a lower end portion of the lower surface rib 19 projects downward from the lower surface 18 of the case body 11. Specifically, the lower surface rib 19 includes a first lower surface rib 19B formed in substantially the entire region in the longitudinal direction at the center in the lateral direction of the lower surface 18 of the case body 11, and the longitudinal direction on both sides in the lateral direction. It consists of a plurality of second lower surface ribs 19A formed at the center and both ends.

  In the present embodiment, the plurality of second lower surface ribs 19A correspond to “lower surface protrusions” according to the present invention, and the tool insertion space R1 according to the present invention is sandwiched between the second lower surface ribs 19A and 19A on both sides. And it is formed in four places of the lower surface 18 of the case main body 11 in the state which the back | inner side was obstruct | occluded by the 1st lower surface rib 19B.

  As shown in FIG. 1, in the case body 11, a plurality of case protrusions 20 are provided at intervals over the entire edge of the bottom surface. The in-case protrusion 20 has a substantially rectangular parallelepiped shape as a whole, and has a step portion on the upper surface. Specifically, the upper surface wall 21 of the case inner protrusion 20 is inside the side wall 14 of the case main body 11, and an upper stage band-like wall 22 extending parallel to and parallel to the upper annular flange 15, and the upper stage band-like wall 22. On the lower side, a lower belt-like wall 23 projecting from the side wall 14 of the case body 11 to the upper belt-like wall 22 side, and a step wall 24 connecting between the upper belt-like wall 22 and the lower belt-like wall 23 are provided. The upper belt-like walls 22 of all the case protrusions 20 are arranged intermittently along an annular line L (see FIG. 4) smaller than the upper surface opening 12 of the case body 11.

  The case protrusion 20 is arranged so as to avoid the four corners of the case body 11.

  The side wall 25 of the case protrusion 20 is suspended from the edge of the top wall 21 and is integrated with the bottom wall 13 and the side wall 14 of the case body 11. Further, a part of the side wall 25 of the case inner protrusion 20 is an offset wall 26 disposed at a position offset from the side wall 14 of the case main body 11 inward, and the offset wall 26 of each case inner protrusion 20. Are flush with each other between the case protrusions 20 and 20 adjacent to each other in the vertical and horizontal sides of the bottom wall 13 of the case body 11. Further, a longitudinal groove 27 is formed on the opposing surface of the case inner protrusions 20, 20 adjacent to each other in the vertical and horizontal sides of the bottom wall 13 of the case body 11 in the side wall 25 of the case inner protrusion 20. .

  As shown in FIG. 1, the bottom surface of the case main body 11 is provided with a stepped portion at a position offset inward from the inner side surface of the case main body 11 by a predetermined distance, and a recessed portion 13A slightly outside the stepped portion. Thus, the load placement portion 13C is slightly higher inside than the step portion. In addition, a plurality of bottom surface protrusions 13 </ b> B extending perpendicularly to the inner surface of the case body 11 are formed on the bottom surface of the depressed portion 13 </ b> A. The entire baggage placement portion 13 </ b> C has a rectangular shape, and its long and short sides are located inside the offset wall 26 of the case inner protrusion 20. Further, between the pair of case protrusions 20 and 20 adjacent to each other at each corner portion of the case body 11 and the corner portion of the luggage placement portion 13C, a corner support that is flush with the luggage placement portion 13C is supported. Part 13D is provided. The corner support portion 13D has a pentagonal planar shape that is formed by obliquely cutting one corner of a rectangle as a hypotenuse. And each side adjacent across the oblique side of the corner support portion 13D is integrated with the offset walls 26, 26 of the pair of case protrusions 20, 20 adjacent in the corner portion, and The oblique side of the corner support portion 13D is interposed between the side edges of the offset walls 26 and 26, and the corner opposite to the oblique side is integrated with the corner portion of the luggage placement portion 13C. . In addition, a rectangular depression 13E is formed at a position away from each side described above in the corner support portion 13D.

  As shown in FIG. 3 (A), the attachment 40 has a housing structure with an open top surface and a deformed flat surface, and as shown in FIG. It can be mounted between the parts 20 and 20 from above. Specifically, as shown in FIG. 4, the attachment 40 is wider than the narrow portion 42 and the narrow portion 42 having substantially the same width as the interval between the adjacent case protrusions 20, 20. The wide portion 43 is integrally provided. In addition, engaging protrusions 41 and 41 are provided on both side surfaces of the narrow portion 42, and when the narrow portion 42 is fitted between the case inner protrusions 20 and 20, the engaging protrusion 41 of the attachment 40 is formed. The attachment 40 is fixed to be immovable in the horizontal direction by engaging with the longitudinal groove 27. In this state, both end portions in the width direction of the wide portion 43 are overlaid on the inner side of the offset wall 26 of the case inner protrusion 20.

  Further, the attachment 40 has a lower strip-shaped wall from the end portion on the side wall 14 side of the case body 11 to an intermediate portion between the upper strip-like walls 22 and 22 of the case inner projections 20 and 20. 23, and the other height is the same as that of the upper belt-like wall 22 of the case protrusion 20. Further, as shown in FIG. 3B, grooves 44 are formed on the lower surface of the attachment 40 to avoid interference with the bottom protrusion 13B.

  Further, the portion of the wide portion 43 farthest from the narrow portion 42 is an additional offset wall 45 according to the present invention. As shown in FIG. 5, the additional offset wall 45 is disposed at a position offset inward from the offset wall 26 of the case inner protrusion 20 with the attachment 40 mounted between the case inner protrusions 20, 20. In addition, the attachments 40 and 40 adjacent to each other are flush with each other.

  1 and 2, the lid 30 is entirely composed of a resin wall having a substantially uniform thickness, and has a structure in which the resin wall is partially bent into a groove shape and reinforced. . Specifically, as shown in FIG. 2, an annular groove 31 is formed on the outer edge portion of the lid body 30 by bending the resin wall into a groove shape having an open bottom surface. And when the cover body 30 is assembled | attached to the case main body 11, the upper annular flange 15 is overlaid on the inner surface of the annular groove 31 (refer FIG.10 and FIG.13). In addition, a pair of horizontally long reinforcing grooves 32 and 32 formed by bending the resin wall of the lid body 30 into a groove shape with an open lower surface are formed in the central portion of the lid body 30 in the longitudinal direction. The lid 30 extends in parallel across the short side direction. Furthermore, a pair of vertically long reinforcing grooves 33 and 33 formed by bending the resin wall of the lid body 30 into a groove shape with an open lower surface are formed in the central portion of the lid body 30 in the short direction. Thus, the lid body 30 extends in parallel in the longitudinal direction.

  As shown in FIGS. 11, 12, and 14, the positioning protrusion 34 faces upward on the bottom wall of the annular groove 31, the horizontally long reinforcing groove 32, and the vertically long reinforcing groove 33 on the upper surface of the lid 30. Protrusions are formed. The positioning protrusion 34 is formed by bending the bottom wall of the annular groove 31 or the like into a groove shape with an open bottom surface that is narrower than the bottom wall. Further, as shown in FIG. 7, the positioning protrusions 34 on the bottom walls of the horizontally long reinforcing groove 32 and the vertically long reinforcing groove 33 are formed over the entire bottom walls of the horizontally long reinforcing groove 32 and the vertically long reinforcing groove 33. . On the other hand, the positioning protrusion 34 on the bottom wall of the annular groove 31 includes the entire portion along the short side of the lid 30 and both end portions of the portion along the long side of the bottom wall of the annular groove 31. And the central part. That is, when the case main body 11 is placed on the lid 30, the positioning protrusion 34 opens the side opening of the tool insertion space R <b> 1 (see FIGS. 2 and 12) provided in the case main body 11. Arranged in a position to avoid. Further, when the case body 11 is placed on the lid body 30, the lower surface rib 19 of the case body 11 and the positioning protrusion 34 of the lid body 30 face each other in the horizontal direction so that the lid body 30 and the case body 11 are positioned in the horizontal direction.

  As shown in FIG. 2, an inner groove 35 is formed near the outer edge of the lid 30. The inner groove 35 is formed by bending the resin wall of the lid 30 into a groove shape with an open bottom surface. In addition, the groove side wall of the inner groove 35 on the annular groove 31 side extends in a straight line parallel to the annular groove 31, while the groove side wall on the opposite side repeats unevenness along the longitudinal direction from the annular groove 31. The relatively spaced apart portions 35A and the approaching portions 35B that are relatively close to the annular groove 31 are arranged alternately. When the lid 30 is attached to the case body 11 with the attachment 40 attached to the case body 11, the upper belt-like wall 22 of the case inner protrusion 20 and the upper end of the attachment 40 are located on the inner surface of the annular groove 31. Overlaid. At this time, the offset wall 26 of the case protrusion 20 is disposed adjacent to the approaching portion 35B of the inner groove 35 in the horizontal direction, and the additional offset wall 45 of the attachment 40 is disposed adjacent to the separating portion 35A of the inner groove 35 in the horizontal direction. The

  As shown in FIG. 1, a plurality of clip engaging portions 60 are formed on the outer edge portion of the lid body 30, and the lid fixing clip 50 can be attached to the clip engaging portions 60. As shown in FIG. 8, the lid fixing clip 50 includes a locking protrusion 51 and a flange engagement piece 52 that extend in the horizontal direction so as to oppose each other, and the locking protrusion 51 and the flange engagement piece. The base end portions of 52 are connected by a connecting wall 53.

  The locking protrusion 51 is disposed above the flange engagement piece 52 and is longer than the flange engagement piece 52. In addition, slits 56S and 56S are formed along both side edges at positions closer to the tip end from the middle portion in the longitudinal direction of the locking projection piece 51. And one end part in these slits 56S and 56S is open | released sideways in the longitudinal intermediate part of the flange engaging piece 52, and the both-sides edge part of the latching protrusion 51 is a cantilever-like flexible arm 56, 56. Further, a locking projection 57 is formed projecting toward the side at the free ends of the flexible arms 56 and 56. Further, a finger hooking protrusion 55 is formed projecting upward at a position near the base end of the locking protrusion 51. On the other hand, the flange engaging piece 52 has a shape in which a tip end portion of a flat projection piece is bent obliquely downward.

  As shown in FIG. 8, in the portion of the lid body 30 where the clip engaging portion 60 is formed, the positioning protrusion 34 is cut off to form a trough 34T sandwiched between the positioning protrusions 34 on both sides. Has been. The upper restricting plate 61 disposed in the valley portion 34T and interposed between the positioning protrusions 34 on both sides constitutes a part of the clip engaging portion 60. Then, the locking protruding piece 51 of the lid fixing clip 50 is inserted into the gap between the upper restriction plate 61 and the upper surface of the lid body 30. A slit 69 is formed below the trough 34T so as to penetrate the side wall of the annular groove 31 in the lid body 30, and the flange engaging piece 52 is inserted therein.

  The lid 30 is provided with a projecting piece receiving chamber 62 on the extension of the valley 34T. The protruding piece receiving chamber 62 is surrounded on three sides by a wall portion protruding from the upper surface of the lid 30 and communicates with a lower gap of the upper restricting plate 61. Further, as shown in FIG. 9, a pair of retaining projections 63, 63 are formed on the inner side surface of the projecting piece receiving chamber 62. Then, the tip of the locking projection 51 passing through the lower gap of the upper restricting plate 61 is accommodated in the projection receiving chamber 62, and over the elastic deformation of the flexible arms 56, 56 in the process, the locking projection 57 is obtained. , 57 are locked to the retaining protrusions 63, 63. At this time, as shown in FIG. 10, the flange engaging piece 52 is overlapped with and engaged with the lower surface of the upper annular flange 15, whereby the lid body 30 is fixed to the upper annular flange 15.

  As shown in FIG. 9, the locking surfaces of the locking protrusion 57 and the retaining protrusion 63 are inclined with respect to the insertion direction of the locking protrusion 51. Thereby, for example, if the lid fixing clip 50 is pulled strongly by putting a finger on the finger hooking protrusion 55, the flexible arms 56, 56 bend using the inclination of the locking surface of the locking protrusion 57 and the retaining protrusion 63 as a guide, The lid fixing clip 50 can be detached from the clip engaging portion 60.

  This completes the description of the configuration of the lidded case 10 of the present embodiment. Next, the operational effects of the above-described case 10 with a lid will be described. As shown in FIG. 6, for example, when a bundle of a plurality of resin sheets W cut into a uniform quadrangle is accommodated in the case body 11, the offset wall 26 of each case protrusion 20 is a side surface of the bundle of sheets W. The bundle of sheets W is positioned in the case main body 11. At this time, the vicinity of each corner portion of the sheet W is supported from below by the corner support portion 13D (see FIG. 1), and the side edge portion of the sheet W is lifted from the bottom surface of the depressed portion 13A (see FIG. 1). . Further, the corner portion of the sheet W is placed between the case protrusions 20 and 20 adjacent to each other with the corner portion of the case main body 11 interposed therebetween, and is lifted from the bottom surface of the depressed portion 13A to prevent deformation. .

  By the way, when the sheet W cut into a relatively small size is accommodated in the case body 11, the attachment 40 is attached between the case protrusions 20, 20 of the case body 11 as shown in FIG. 5. That's fine. Then, the additional offset wall 45 of these attachments 40 is positioned inside the offset wall 26 of the case inner protrusion 20, and a bundle of sheets W having a relatively small size can be positioned in the case body 11. Further, the additional offset wall 45 of each attachment 40 is located outside the stepped portion between the depressed portion 13A and the luggage placing portion 13C on the bottom surface of the case body 11, and the outer edge portion of the seat W is formed on the depressed portion 13A. It will be in the state which floated up from the clearance gap between a bottom face and the lower surface of the attachment 40. FIG. Thereby, the outer edge portion of the sheet W is prevented from being caught in the gap between the bottom surface of the depressed portion 13A and the lower surface of the attachment 40. Further, each corner portion position of the sheet W is supported from below by the corner support portion 13D, and the corner portion of the sheet W is accommodated between the attachments 40 and 40 adjacent to each other with the corner portion interposed therebetween, as shown in FIG. As shown, it is located above the depressed portion 13E formed in the corner support portion 13D and floats from the bottom surface of the depressed portion 13E to prevent deformation.

  When the bundle of sheets W is accommodated in the case main body 11, the lid 30 is placed on the upper surface of the case main body 11 so that the sheets W are not soiled or scratched (see FIG. 7). Then, the lid fixing clip 50 is attached to the clip engaging portion 60 of the lid body 30 so that the lid body 30 is not detached from the case body 11. Then, the flange engaging piece 52 of the lid fixing clip 50 is overlapped on the lower surface of the upper annular flange 15, and the outer edge portion of the lid 30 is fixed to the upper annular flange 15 (see FIG. 10). And what is necessary is just to pile up and convey the case 10 with a lid | cover in the state which accommodated the sheet | seat W and attached the cover body 30 as shown in FIG.

  Here, the operation of stacking and unloading the lidded case 10 can be performed using, for example, a robot (not shown). Specifically, in the case 10 with a lid according to the present embodiment, the tool is inserted below the case body 11 regardless of whether the case body 11 is placed on the floor surface or the lid body 30. Space R1 (refer FIG.2 and FIG.12) will be in the state open | released to the side. Therefore, a projecting piece-shaped transfer tool T that can be inserted into the tool insertion space R1 may be attached to the robot. As an example, for example, a hand having a pair of movable walls contacting and separating from each other is attached to the tip of a robot arm, and the projecting piece-shaped transfer tool T shown in FIG. Place and fix one pair at a time in parallel. Then, the pair of movable walls are separated from each other and the case 10 with the lid is arranged between them, and then the pair of movable walls are brought close to each other to insert each transfer tool T into the tool insertion space R1 of the case body 11. do it. Thereby, the case 10 with a lid can be supported and lifted from below by the transfer tool T, and the stacking and unloading operations can be performed using the robot.

  In addition, since the case protrusion 20 is formed above the tool insertion space R1 in which the transfer tool T is inserted in the case body 11, deformation of the case body 11 during transfer is also prevented.

  Now, when the case 10 with a lid | cover is conveyed with a vehicle, the case where the bundle | flux of the sheet | seat W presses the side wall 14 within the case main body 11 at the time of acceleration / deceleration of a vehicle arises. However, in case 10 with a lid of this embodiment, between bottom wall 13 and side wall 14 of case main body 11 is connected by a plurality of case projections 20, and the strength of case main body 11 is increased. Further, since the inner groove 35 is formed in the lid 30 in addition to the annular groove 31, the strength of the lid 30 is also increased. Further, due to the increased strength, the deformation of the lid 30 and the case main body 11 is suppressed, and the spread of the gap between the lid 30 and the case main body 11 is also suppressed. This prevents the sheet W from being caught and damaged between the lid 30 and the case main body 11.

  Further, when the attachment 40 is attached, the attachment 40 fits in the separation portion 35A in the inner groove 35 of the lid body 30, and the gap between the inner surface of the inner groove 35 and the attachment 40 is an edge portion of the sheet W. It becomes intermittent in the direction along. Thereby, even if the sheet W is separated and warps upward, the sheet W is reliably prevented from entering the gap.

  Further, in the present embodiment, the vertically long reinforcing grooves 33 and the horizontally long reinforcing grooves 32 for reinforcing the lid body 30 have a structure in which the resin wall constituting the lid body 30 is bent into a groove shape with an open bottom surface. Compared with the case where, for example, a reinforcing rib is provided on the lid 30, the stress at the time of contact with the load is relieved, and damage to the load can be prevented.

[Second Embodiment]
A case 10 </ b> V with a lid according to the present embodiment is shown in FIG. 15, and the case main body 11 </ b> V according to the present embodiment is not provided with the vertical groove 27 (see FIG. 1) on the side surface of the protrusion 20 in the case. Corresponding to the fact that the attachment 40 is not attachable and the attachment 40 is not attachable, the inner groove 35V of the lid 30V is provided only in the portion facing the upper belt-like wall 22 of the case protrusion 20. It is different from the formed point.

  According to this configuration, since the gap between the inner surface of the inner groove 35V and the case protrusion 20 in the lid 30V is intermittent in the state where the lid 30V is assembled to the case body 11V, the sheet W is Even if the sheet W breaks out and warps upward, the sheet W is reliably prevented from entering the gap.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

The exploded perspective view of the case with a lid concerning a 1st embodiment of the present invention. A perspective view of the case with a lid viewed from below Attachment perspective view Partially enlarged perspective view with attachment attached to case body A perspective view of the case body with the attachment attached The perspective view of the state which accommodated the bundle of sheets in the case body A perspective view of the case body with the lid attached Perspective view of lid fixing clip and clip engaging portion Top view of lid fixing clip and clip engaging part Side sectional view of lid fixing clip and clip engaging part A perspective view of a case with a lid containing a bundle of sheets A perspective view of a case with a lid in a state in which a bundle of sheets is accommodated and stacked Broken perspective view of a case with a lid containing a bundle of sheets Broken perspective view of a case with a lid containing a bundle of sheets Exploded perspective view of case with lid according to the second embodiment

Explanation of symbols

10, 10V Case with lid 11, 11V Case body 12 Upper surface opening 13 Bottom wall 14 Side wall 15 Upper annular flange 19A Second lower surface rib (lower surface protrusion)
20 Case inner protrusion 21 Upper surface wall 22 Upper step belt-like wall 23 Lower step belt-like wall 24 Step wall 25 Side wall 26 Offset wall 30, 30V Lid 31 Annular groove 32 Horizontal reinforcement groove 33 Vertical reinforcement groove 34 Positioning protrusion 35, 35V Inner groove 40 Attachment 45 Additional offset wall 50 Lid fixing clip 60 Clip engaging part R1 Tool insertion space T Conveying tool W Sheet

Claims (5)

A resin case body having an open upper surface and a resin lid body capable of closing the upper surface opening of the case body, and an upper annular flange projecting laterally from the upper end of the side wall of the case body In the case with the lid, the outer circumferential portion of the lid body is formed with an annular groove that can receive the upper annular flange by bending the resin wall constituting the lid body into a groove shape with an open bottom surface.
A plurality of in-case protrusions arranged between the bottom wall and the side wall of the case body, provided at intervals across the entire edge of the bottom surface in the case body,
The upper surface wall of the protrusion in the case is located on the inner side of the side wall of the case main body, and extends upward and in parallel with the upper annular flange, and on the lower side of the upper step band-shaped wall. A lower step-like wall projecting from the side wall to the upper step-like wall side, and a step wall connecting between the upper step-like wall and the lower step-like wall,
A part of the side wall of the case inner protrusion is an offset wall that is arranged at a position offset from the side wall of the case body inward and is flush with the adjacent case inner protrusions,
A lidded case characterized in that an inner groove capable of receiving the upper belt-like portion is formed at a position near the outer edge of the lid body by bending a resin wall constituting the lid body into a groove shape having an open bottom surface. . A plurality of attachments that are inserted from above between adjacent protrusions in the case and engage in an immovable manner in the horizontal direction are provided,
The said attachment was provided in the position which offset the said offset wall inside, and was provided with the additional offset wall which became flush | planar between the said adjacent attachments. Case with lid. A plurality of lower surface protrusions that protrude from the lower surface of the case main body and come into contact with the floor surface when the case main body is placed on a flat floor surface;
A tool insertion space that is sandwiched between the lower surface protrusions in the horizontal direction and is opened to the side of the case body, and a projecting piece-like transport tool can be inserted from the side;
When projecting from the upper surface of the lid and placing the case main body on the lid, the case main body is positioned in the horizontal direction, and the side opening of the tool insertion space is not closed. The case with a lid according to claim 1, wherein a positioning protrusion is provided. A vertically long reinforcing groove which is formed by bending a resin wall constituting the lid body into a groove shape having an open bottom surface and is disposed at a central portion in the lateral direction of the lid body and extends over the entire longitudinal direction of the lid body. When,
A horizontally long reinforcing groove which is formed by bending a resin wall constituting the lid body into a groove shape having an open bottom surface and is disposed at a central portion in the longitudinal direction of the lid body and extends over the entire lateral direction of the lid body. The case with a lid according to any one of claims 1 to 3, characterized by comprising:   A plurality of clip engaging portions are provided on the outer edge portion of the lid body, and a plurality of lid fixing clips that are mounted and engaged from the side of the lid body are provided on the plurality of clip engaging portions, and the lid fixing clips. The case with a lid according to claim 1, further comprising a flange engaging piece that overlaps and engages with a lower surface of the upper annular flange.