FR2556321A1 - Stackable container for storage and transport made of synthetic material - Google Patents

Abstract

a. Stackable container for storage and transport made of synthetic material. b. Container characterised in that the front walls are constituted by flat frontal upwardly and rearwardly inclined strips 53a, 53b which form, in common with the internal parts of lateral walls 23, 33 and with the lateral walls 20, 24, 30, 34 of each side of the outlet strip 51, a hollow stiffening profile in the shape of a truncated pyramid, these profiles being provided, at the top, with a closing wall 25, 35 aligned with one of the stacking surfaces 21, 31, 41. c. The invention relates to a stackable container for storage and transport made of synthetic material.

Description

"Stackable storage and transport container
synthetic material "
The present invention relates to a stackable storage and transport container made of synthetic material, comprising a bottom wall, two side walls perpendicular to the bottom and a rear wall also perpendicular, as well as a front wall, inclined towards the front, and sealing. partly the front side of the container, with, on its upper edge part a grip strip open downwards, container in each of the side walls of which, is connected in one piece to an inner side wall part, converging towards the 'Front, the opening thus formed closed by a front wall, and on each side wall and on the rear wall is provided a stacking surface surrounded by a perimeter stacking edge.

 Such containers are known, for example from patent CH-A-568,893. Such a container comprises, according to this patent, a bottom wall, two side walls perpendicular to the bottom, a rear wall perpendicular to the bottom and also to the side walls, and a front wall inclined towards the front provided on its upper edge with a catch basin open downwards. Thus, part of the container remains open above the front wall. A hinged lid is at the top of the container and can be pivoted outwards forwards. A removable separator cover is used to cover the opening of the container. In the socket strip there is a label holder.

 I1 has been found that, in the case of containers of this type, especially those of large dimensions, when stacked, the side walls tend to deform by bloating outwards, when they remain for a long time under load other containers on top of them.

 According to patent DE-C-11 71 331, it is known to have, near the front wall and the socket opening thereon, stiffening profiles of the box type, in order to avoid deformation of the side walls outwards under the effect of the load, without, however, being influenced the advantages of stacking and displacement, in the manner of drawers of the stacked containers.

 In accordance with an embodiment of this publication, lateral guide grooves are also provided in which plug-in plates are inserted. It is also known to constitute these plates in a transparent material. The maximum volume of the containers can thus be used completely.

 It is also possible to install an angle cover, with which the entire opening can be closed both forwards and upwards. However, this can be achieved in the case of individual containers stacked in a column, the angle cover still being able to be removed simply by means of the plugged-in plates.

 According to patent DE-OS-29 15 812, another container of this kind is known. As in the known containers, there are provided, on the inside, hollow reinforcing profiles, guide ribs projecting inwards. A flat plate-shaped plug-in plate has an angularly angled grip tab on its upper edge. Thus, transparent plates or dust valves of corresponding shapes can be used. The plug-in plates are provided over their entire height with lateral guide edges with which they can slide in the groove formed, on the one hand, in the ribs and, on the other hand, in a wall of the hollow reinforcing profiles. The length of the ribs is then chosen in such a way that the plug-in plate can, using the front wall inclined towards the front of an upper container, be turned up and forward and be extracted from the stack. .

This provision, although intended for durable use with plug-in plates, is linked to certain drawbacks
The hollow parts of the guide grooves are places where dust and dirt can accumulate, which are difficult to remove afterwards.

Complete covering of the entire opening upwards and forwards is not provided, nor could it be achieved in such a way, that the portion of cover closing the upper opening could be kept suspended , without this part of the cover being deformed by curvature, when it is removed or when it is put in place.

 Consequently, the object of the invention is to avoid these drawbacks by producing a simple mold for injection molding, with walls that are largely rectilinear in the field of the hollow reinforcing profile with the possibility of providing a dust valve located at the front for closing the transparent opening and also a dust and transport valve for closing the container on all sides, which can be easily removed by hand, this dust valve can be fitted and removed even in the case of stacked containers.

 This problem is solved in accordance with the invention by a container of the type described, characterized in that the front walls are constituted by flat front slats inclined at the rear upwards which form, in common with the internal parts of side walls. and with the side walls on each side of the grip strip, a hollow stiffening profile in the form of a pyramid trunk, these profiles being provided, at the top, with a closing wall aligned with one of the stacking surfaces, the entry strip having an upper cover strip projecting forward above the two front strips.

An exemplary embodiment of the invention is described below with reference to the accompanying drawings in which
FIG. 1 is a perspective view of a container according to the invention,
FIG. 2 is a perspective view of a dust cover for closing the opening on the front side of the container,
FIG. 3 is a perspective view of a dust and transport valve for closing the assembly of the open part of the container,
- Figure 4 is a sectional view through
IV-IV of figure 1,
FIG. 5 is a plan view in the direction of the arrow V in FIG. 1.

 The storage and transport container shown in FIGS. 1, 4 and 5 comprises a bottom wall 10, two side walls 20, 30 perpendicular to the bottom wall, a similar rear wall 40, arranged at right angles to the walls. side 20 and 30, and a front wall 50 inclined forward. The side walls 20, 30 and the rear wall 40 have corresponding heights, and they form, at the top, a deposition surface substantially parallel to the bottom wall 10, by means of stacking surfaces 21, 31, 41, bent outwards, at right angles to the side and rear walls. On the outside of these stacking surfaces 21, 31, 41, which unitarily widen and lengthen the container, there are vertical stacking edges 22, 32, 42, which are thus parallel upwards to the corresponding walls. The upper edges of these stacking edges are in a common flat bene.

 The front wall 50, inclined obliquely outwards, connects to the bottom wall 10, and it has, in the region of its upper edge, a height equal to half the distance between the bottom wall 10 and the stacking edges 22, 32, 42. The upper edge of the front wall 50 is extended into a grip strip 51 and it forms, in cooperation with a horizontal upper cover strip 52, a grip bowl 53 open towards the top (Figure 4).

 The protruding part 54, between the inclined front wall 50 and the horizontal bottom wall 10, forms a rounded shape and serves to facilitate the taking of remaining service parts from the container.

 The grip strip 51 is, at least partially, provided with a double wall, with an outer wall 51a and an inner wall 51b, the outer wall 51a having a rectangular recess 51c which serves to receive an indication bearing plate. This plate is not shown, nor described in the description, as being well known in the shopping technique.

 In the part of the two side walls 20, 30 which is adjacent to the front wall 50, parts of the side walls 23, 33 are connected in one piece to the side walls 20, 30, and they converge towards the front wall, so that the width of the open part beyond the cover strip 52 is less than the width of the rear wall 40 inside the container.

 On the outside, the side walls 20, 30 are cut in degrees outwards, and they have portions of outside walls 24, 34, which are parallel to each other and parallel to the side walls 20, 30. Downwards , the inner side wall portions 23, 33 and the outer wall portions 24, 34 are cut in a plane extending obliquely forward and upward. The inner side wall portions 23, 33 are rounded like the protruding part 54 and laterally close the front wall 50. The angle which is formed by this plane with the bottom wall 10 is insignificant. I1 has been found to be advantageous in providing that this plane connects the lower rear corners of the outer wall portions 24, 34 to each other and the lower edges of the grip strip 5.

 The wedge-shaped openings thus produced between the portions of interior side walls 2-3-, 33 and the portions of exterior walls 23, 34 are closed towards the front by front battens 53a, 53b which start at the bottom at the height from the lower edge of the grip strip 51, and are inclined towards the rear, to end at the height of the stacking surfaces 21, 31.

At the top, these empty spaces are closed off by means of end walls 25, 35, so as to enclose a trunk of pyramid with three sides. The outer wall portions 24, 34 each form, with the inner side wall portions 23, 33 and the front battens 53a, 53b a hollow profile for lateral reinforcement.

 On the bottom side, the side walls 20, 30, are provided with projecting edges in the form of ribs 11. These edges 11 lie in the same plane with the outer wall portions 24, 34 and thus enlarge the bottom wall of an amount which is slightly less than the free space formed between the lateral stacking edges 22, 32. The rear wall 40 is, in its upper part, curved inwards over its entire width.

With a grip strip 43, which is aligned on the outer face with the stacking edge 42, is formed a bowl 44 easy to grip (see Figure 4).

 Such a container is distinguished by good shape stability, great ease of stacking and in particular by simple casting shapes, so that it can be produced without deformation by an injection casting process.

 So that in a stacking of such containers, a sliding of the upper container can be avoided, abutment bosses 26, 36 are arranged in front, on the stacking edges 22, 32 beyond the closing walls.

 A dust cover 60 according to FIG. 2 is provided in order to close the opening on the front side above the upper cover strip 52 of the front wall. A front wall 61 must then be engaged over the two front battens 53a, 53b over part of their width. The closure walls 25, 35 must also be covered over part of their length and the lower edge of the front wall 61 must be applied intimately to the cover strip 52.

 On the front wall 61, there is, at the bottom, a support strip directed towards the rear 62, and, at the top, a similar support strip 63. These strips 62 and 63 are parallel to each other and form with the wall frontal 61, an angle which is equal to the angle of inclination of the frontal battens 53a, 53b relative to the horizontal.

A catch splice 64 projects from the front surface of the front wall 61, in the same plane as the retaining strip 63.

 For fixing the dust valve 60-on the container, there are provided, for the container of FIG. 1, in the top cover strip 52, and in the closing walls 25, 35, openings 27, 37, 57a , 57b, and the support strip 62 as well as the holding strip 63 have pins or claws 65 corresponding to these openings.

 A recurring problem always arises for the closure of such a dust valve 60 when access through the front opening must be made free. So that the valve 60 can be kept hooked, the support strip 62 has a retaining bar 66 directed upwards, opposite the pin 65 oriented downwards. These retaining ribs 66 can be engaged in the openings 57a, 57b of the cover strip in order to keep the dust valve 60 suspended.

 It is obvious that such a dust valve, on stacked containers, can be lifted outwardly at any time in a simple manner, since it is only raised from a height corresponding to pin 65 in order to be able to remove it. openings. Similarly, the installation of the valve does not raise any difficulty and in particular does not require any guide groove with ribs, which would narrow the opening and would be difficult to clean.

 When transporting flowable products, it is known to be able to steadily close the upper opening. For this, a dust or transport valve 70 is provided in accordance with FIG. 3.

 Such a dust or transport flap or flap 70 comprises a cover flap 71 and a front flap 72. The cover flap 71 has a width such that it can be easily inserted between the lateral stacking edges 22, 23 , and, with the front edge 73 of the front valve 72, is enclosed the edge between the end walls 25, 35 and the front battens 53a, 53b. Thus, the front valve 72 is applied intimately to the front battens.

 Near the front edge 73 are provided on the lateral edges, notches 74a, 74b through which the abovementioned abutment bosses 26, 36 protrude above the cover flap and can exercise their function.

 The front valve 72 is provided, on each side, with a closing wall 75, with which it is intimately applied to the front battens 53a, 53b, and a central gripping wall 75, which extends at right angles to relative to the flap or cover flap 71. Laterally, this grip wall 75 is connected in one piece to the side walls 75. A grip cross member 77 connects the two closing walls 75, in front of the grip wall 76 This crosspiece 77 can be arranged parallel to the wall 76. The catch basin 78 thus formed between the crosspiece 77 and the wall 76 is closed on the bottom side by a support strip 84.

 For the fixing of this dust or transport flap or flap are arranged in the two front strips 53a, 53b, in the area of the top cover strip 52, slots in the form of slots 58a and 58b, likewise, in front of the stacking surface 41 which is located above the rear wall 40, there are provided, in the wall of the intake bowl 44 (FIG. 4), similar openings 45, 46. Splice plates are arranged on the transport valve 70 corresponding front 79 and rear 81. The rear ribs 81 are oriented downward and each carry a terminal rib, oriented towards the rear which is engaged below the stacking surface 41.

 When setting up the dust and transport valve 70, the end ribs 82 are first engaged in the openings 45, 46, and, with this hinge, the valve 70 can be brought into its closed position. By downward pressure, the front splices 79 slide over the front battens 53a and 53b and hook into the corresponding openings 58a and 58b. Thus, the container is hermetically sealed from its fluid flow contents.

To open it, by pulling on the grip cross member 27, the front splints are released from their notched engagement and the valve can be lifted in the manner of a hinge.

Claims (13)

 10) Stackable storage and transport container made of synthetic material, comprising a bottom wall, two side walls perpendicular to the bottom and a rear wall also perpendicular, as well as a front wall, inclined towards the front, and partially closing the front side of the container, with, on its upper edge part an entry strip open downwards, container in each of the side walls of which, is connected in one piece to an inner side wall part, converging towards the front, the opening thus formed closed by a front wall, and on each side wall and on the rear wall is provided a stacking surface surrounded by a perimeter stacking edge, container characterized in that the front walls are constituted by flat front slats inclined at the rear upwards (53a, 53b) which form, in common with the internal parts of the side walls (23, 33) and with the side walls (20, 24, 30, 34) d e each side of the outlet strip (51), a hollow stiffening profile in the shape of a pyramid trunk, these profiles being provided, at the top, with a closing wall (25, 35) aligned with one of the surfaces d stacking (21, 31, 41), the gripping strip (51) having an upper cover strip (52) projecting forward above the two front battens (53a, 53b).  20) Container according to claim 1, characterized in that the outer side walls (20, 30) extend from the position of the base of the inner portions of side walls, (23, 33) to the parts of side walls (24 , 34) shifted outwards.  30) Container according to claim 2, characterized in that its lower edges (26, 36) protrude, in the plane of the bottom wall (10), beyond the side walls (20, 30) forming a rib, of such an amount that the width of the bottom wall (10) is widened at least up to the size of the free space between the lateral stacking edges - (22, 32), and the interior wall portions (24, 34) are aligned at least approximately with the projecting edges (26, 36).  40) Container according to any one of claims 1 to 3, characterized in that, in the cover strip (52) of the grip strip (51) in the vicinity of the inner portions of side walls (23, 33) of a on the other hand, and in the closing walls (25, 35) of the hollow stiffening profile, on the other hand, openings (27, 37, 57a, 57b) and a damper or flap (60) are provided, engaging at least partially the front strips (53a, 53b), provided with a retaining strip (63) angularly bent, resting on the closure walls (25, 35), is supported, so as to be able to be extracted, with pins (65) engaged in the mentioned openings (27, 37, 57a, 57b).  50) Container according to claim 4, characterized in that the dust-proof valve or flap (60) is provided, on its edge situated opposite the cover strip (52), with a support strip (62), enclosing with the front wall (61) of the valve (60) an angle corresponding to the inclination of. frontal strips (53a, 53b) relative to the horizontal, this support strip (62) being provided with retaining clips (66) adapted laterally to the pins (65) provided on the lower edge part of the valve (60 ) and which are dimensioned to engage in the openings (57a, 57b) of the cover strip (52).  60) Container according to any one of claims 1 to 3, characterized in that the front battens (53a, 53b) and the stacking surface (41? On the rear wall (40) have recesses. (45, 46 , 48a, 48b) and a dust and transport valve (70), which covers at least the open surface of the container with a cover valve (71) and at least the open part on the front wall (50), with a front valve (72) is provided with splices (79, 81) engaged in said recesses (45, 46, 48a, 48b).  70) Container according to claim 6, characterized in that the dust and transport valve (70) rests all around on the upper stacking surfaces (21, 31, 41) and covers, in front, the front battens ( 53a, 53b) at least approximately up to the edge between the front battens and the outer wall parts (24, 34), in addition, the ribs (81) which are engaged in the recesses (45, 46) of the surfaces d stack (41) are arranged on the rear edge (80) of the valve (70), while the ribs (79) which are engaged in the recesses (58a, 58b) of the front battens (53a, 53b) are provided on the lower edge (84) of the front valve (72).  80) Container according to claim 7, characterized in that, on the outside, on the lower edge of the front valve (72) is formed a catch basin (78) open upwards.  90) Container according to claim 8, characterized in that the gripping bowl (78) is aligned with closing walls (75) of the front valve (72), which are located above the front battens (53a, 53b) .  100) Container according to any one of claims 1 to 9, characterized in that the rear wall (40) has a catch basin (44) open downward, which extends over the entire width, and whose depth is, at least approximately, equal to the width of the stacking surface (41) beyond the rear wall (40).  110) Container according to claim 10, characterized in that the base surface of the intake bowl (44) is formed by the underside of the strip which forms the stacking surface (41).  120) Container according to claim 11, characterized in that the recesses (45, 46) in the stacking surface (41) beyond the rear wall (40) are formed by slots passing through the stacking surface.  130) Container according to claim 12, characterized in that the ribs (81) which are engaged in the recesses (45, 46) of the stacking surface (41) are provided with end ribs (82) which are engage under the batten.