SK105496A3 - Injection-moulded single-edge plastic container with a snap-on lid - Google Patents

Abstract

The invention relates to a container characterized in that the interior (14) of the lid (2) when closed lies below the upper edge (3) of the container (1). The inside (15) of the lid edge surrounding the lid interior (14) has a reinforcement bead (16) running round it with a multiplicity of inwards-facing parallelepipedal projections (17) which connect the lid interior (15) to the inside of the lid edge. The outer part (6) of the lid edge running round the outside of the plastic container wall (4) has an outwards-facing inclined slide surface (10) merging in an approximately vertical zone (11) which is located at a large distance from the container wall (4) and terminates close to the edge (8) running round the container.

Description

Plastic tank with one edge injection molded, with a hinged lid

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molded plastic container with a hinged lid with an upper edge for snap-on lid retention and a projecting edge extending around the outside of its wall and extending into the region of the contracted edge surrounding the wall. wherein the lid is approximately; a vertically disposed outer region that surrounds the wall above the protruding edge in the lid closed state and is provided with an inner surface which is below the upper edge of the plastic tank in the lid closed state.

Such plastic containers are used for the storage and transport of any goods, and depending on the size of the plastic container and the type of goods contained in the plastic container, a considerable weight can be achieved. The terms used up or down below always refer to the normal working position of the lid-closed plastic tank.

If such filled plastic tanks are stacked on top of one another, for example on pallets for transport purposes, the lids of the lower plastic tanks can always be levered outwards. As a result, the lid is freely stored. which may then even be lost under certain circumstances, or at least has an area in which the lower edge of the lid is bent.

In addition, the contracted edge area or the circumferentially extending edge of the plastic container may abut the extending edge or region of the contracted edge of the lid of the adjacent plastic, or the lower plastic container may be damaged. at the adjacent abutment. Furthermore, the plastic adjacent plastic tank can remain inclined so that its side wall can break due to the weight of the goods contained therein. However, such transport damages are highly undesirable.

Another disadvantage of the known lift can be seen in the fact that when they are stacked immediately one above the other, they can wedge into one another and thus make it difficult to move away.

FR-A-2463063 has become a well-known tank with lid. in which the lower edge of the lid is largely secured against accidental opening. For this purpose, a projecting edge surrounding the outer wall of the tank is used at a distance below the lower edge of the lid. The width of this projecting edge corresponds approximately to the distance of the lower edge from the tank wall.

In this way, a possible opening of the lid can be prevented. since the lower edge of the lid cannot come into contact with the upper edge of the lid of the adjacent tank. However, this danger arises when the outer edge of the lid expands due to a considerable weight load. as is the case with stacked tanks.

This expansion process is not prevented by the running flange in the inner surface of the lid. used to attach the lower edge of the tank to the next tank to be pulled off the lid.

In addition, US-A-4234100 describes a container lid intended to provide good air evacuation when the container is closed. In addition, * this lid is intended to allow stacking of filled tanks. For this purpose, blocks are provided on the inner surface with recesses for receiving the lower edge of the tank. Under the lid protrudes radial ribs that strengthen the inner surface of the lid. This results in an overall increased stiffness of the lid, which considerably hinders the opening process. However, accidental opening of the lid due to accidental hooking of the outer edge of the lid with other tanks will not be prevented by these solutions.

It is therefore an object of the present invention. to provide a single-edge injection molded plastic tank with a hinged lid that has improved load capacity when stacking plastic tanks or stacked tops, the stacking process to be substantially improved and reliably preventing damage to the tank edge area by adjacent plastic tanks during stacking or transport , for example in pallets.

The object of the present invention is to provide a single-edge injection-molded plastic tank with a snap-on lid of the aforementioned type by providing the inner side of the lid surrounding the inner surface of the lid with a reinforcing flange having multiple inwardly directed cuboid protrusions. the inside of the lid. The outer lid area surrounding the wall has an outwardly directed inclined sliding surface. which extends at a greater distance from the wall to an approximately vertically disposed region, forming a lower edge of the lid. wherein the region of the contracted edge is provided with a continuous taper to engage the lower edge of the lid.

This solution results in a significantly improved load capacity when stacking the plastic tanks one above the other. The design of the projections joining the inner surface with the contracted portion of the lid leads to a substantial increase in the stiffness of the lid in this region without this. that it would be more difficult to remove the lid from the plastic tank. The inclined sliding surface on the one hand achieves a further increase in the stability of the lid against expansion due to vertical stacking load and, on the other hand, facilitates the stacking process because adjacent plastic tanks cannot be hooked

3 one to the other.j.

In order to achieve sufficient stability when stacking plastic tanks. is expedient. the inwardly directed projections surround an area which corresponds at least to the contact surface of the bottom of the plastic container. In addition, the inwardly directed projections greatly facilitate centering of the tanks during the stacking process.

Particularly uniform strengthening of the lid circumference is achieved by this. when the distances between the projections correspond to the width of the projections and the underside of the lid is provided with the projections facing outwards. whose shape corresponds to the projections on the inner surface of the lid.

A further preferred embodiment of the invention is characterized in that the protrusions located on the underside of the lid surround a surface which approximately corresponds to the surface. that surrounds the inner upper edge of the lid. This makes it possible to stack the lids almost free from each other.

In order to prevent jamming when the lids are stacked, the inner side of the lid is provided with a protruding round running edge on its underside to retain the inner upper edge of the lid of the next lid.

A further embodiment of the invention is characterized by. That the depth of the constriction corresponds approximately to the thickness of the lower edge of the lid. Furthermore, it is expedient that the height of the constriction is considerably greater than the thickness of the lower edge of the lid. This embodiment of the invention achieves that when the plastic containers are stacked, the lid edge is not accidentally pressed and the plastic containers slide on one another.

A particularly stable fastening of the lid is achieved when the lower edge j

The lid rests on the upper side of the biasing funnel. what except

-4-this will avoid circumvention of any existing original cap.

It is further preferred. when the inclined sliding surface is provided with an outwardly extending nose-shaped protrusion.

This additional measure, which is particularly useful for round plastic tanks, prevents the plastic tank from being placed around the edge of the adjacent plastic tank and possibly hooked therein during stacking and during transportation. By means of an inclined sliding surface in conjunction with a running nose, the additional possibility is created that the plastic tanks can slide away from one another and can then return to their normal position.

In addition, the design of the lid with the nose-shaped projection according to the invention makes it particularly easy to move away or to fold away. taking individual ages. stacked above each other from a stack. By means of a nose-shaped projection, the gripper of the stacking device can hold the individual lids side-by-side in a particularly problem-free manner and release one after the other downwards.

It is not important for the practice of the invention. whether the plastic containers are designed as round, oval or square, since the individual features of the invention need only be adapted in an appropriate manner to the outer shape of the plastic container.

in

The invention is explained in more detail below with reference to an exemplary embodiment. In the respective drawings »

Fig. 1 is a top view of an injection molded plastic bucket lid;

Fig. 2 is an enlarged cross-section along line I-I of FIG. when

Fig. 3 is an enlarged cross-section along the line ΙΪ-ΙΙ of FIG. 1;

Fig. 4 shows two plastic tanks with a lid closed during the sliding process

-5-directionoin apart, for example when loading on a pallet;

Fig. 5 shows two plastic tanks shown in the cut-out in the process of sliding in the region of the original closure.

According to FIG. 1 to 3, the plastic container 1 is closed by a lid 2 thereby. For this purpose, the outer region 6 of the lid 2 is provided on its inner side with a known running edge 7 in a known manner. The plastic container 1 is further on the outer side. a wall 8 provided with a running edge 8 extending into the region of the contracted edge 9 and spacing around the wall 4 of the plastic container 1.

As can be seen from FIG. 2 and 3. the outer region 6 of the lid 2 surrounds the gripping edge 5 located at the upper edge 3 of the wall 4. This outer region 6 is adjoined by an outwardly sloping sliding surface 10 which subsequently extends into an approximately vertically extending portion 11 of the lid 2.

In order to achieve a good coupling with the lid 2 when closing the plastic container 1. The area of the contracted edge 9 is provided with a constriction 12 for retaining the lower edge of the lid 13, the depth of which should correspond approximately to the thickness of the lower edge of the lid 13. 12 is substantially greater than the thickness of the lower edge of the lid 13. This is achieved. that when stacking the plastic tanks 1, the edge of the lid 13 is not accidentally pressed and the plastic tanks can slide well on top of each other.

A particularly stable fastening of the lid 2 is achieved when the lower edge of the lid 13 is biased against the upper side of the constriction 12, whereby, in addition, circumvention of any existing closure of the original closure can be prevented.

-6-

Podía vyobr. 1 to 3, the lid 2 has an inner surface 14 which, in the closed state of the lid 2, is located below the upper edge 3 of the plastic container 1. Further, the inner side of the lid 15 is provided with a reinforcing flange 16 extending all around. the inner surface 14 of the lid 2 and the inner side of the lid 15. The inwardly directed protrusions 17 surround a surface which corresponds at least to the contact surface of the bottom of the plastic container 1. In order to achieve a uniformly distributed reinforcing effect. .

In addition, the underside of the lid is a projection. the shape of which corresponds to the side of the lid, which surrounds approximately the area surrounding the inner provided with outwardly extending projections 17 on the upper surface which corresponds to the upper edge of the lid 18.

Furthermore, the inner side of the lid 15 is provided at its underside against the reinforcing rim 16 with a projecting supporting edge 19 extending all around to retain the upper inner edge of the lid 18 of the next lid. so that there is no jamming when stacking the lids 2.

Na vyobr. Figures 4 and 5 show the situation during the sliding process of two plastic tanks 1, wherein a nose-shaped projection 20 is also provided around the inclined sliding surface 10 and the recessed portion 11 of the lid 2. which further improves the gliding process. The situation seen in FIG. 5 corresponds to that shown in FIG. 4, where the sliding process is shown in the region of the original closure 21

In addition, by means of the projection 20, when stacking and transporting the plastic containers 1, it is ruled out that the plastic container 1 could abut the edge 8 of the adjacent plastic container 1 and possibly hook there. With the inclined sliding surface 10 in

The nose-shaped projection 20 is achieved. that the plastic tanks 1 slide away from each other and can again assume their normal position. As a result, the plastic tanks 1 due to the inclined sliding surface 10 when stacked or transported on pallets or the like, at best can only stand for a short period of time and slide well on top of each other. the danger that one of the plastic tanks is broken due to the weight load is almost entirely eliminated.

It is not important for the practice of the invention. Whether the plastic tanks 1 are round, oval or square shaped, the individual features of the invention need only be used in an appropriate manner.

Claims (2)

PATENT CLAIMS 1. Plastic tank ¢ 1) with one edge injection molded with hinged lid ¢ 2). with an upper edge ¢ 3) for latching the cover C 2) and with a projecting edge okraj 8) running around the outside of its wall (4). which passes into the region of the contracted edge C9) surrounding the wall at a distance ¢ 4), wherein the lid ¢ 2) has an approximately vertically arranged outer region. which in the folded state surrounds the wall C 4) above the protruding edge ¢ 8) and which is provided with an inner surface i ¢ 14) which is at stuck state lid ¢ 2) located below top edge ¢ 3) plastic tank ¢ 1), mark i ú c a by that internal lid side ¢ 15) surrounding the inner area The cover (C14) is provided with a reinforcing bead (C16) extending all around. The reinforcing flange C16) has a plurality of inwardly directed cuboid protrusions C17). which connect the inner surface ¢ 14) to the inner side of the lid (15). that the outer region (6) of the lid (2) surrounding the wall (4) has an outwardly sloping sliding surface (10). which with a greater distance to the wall ¢ 4). passes into an approximately vertically disposed region ¢ 11) forming the lower edge of the lid ¢ 13). and that the region of the contracted edge ¢ 9) is provided with a continuous taper (C12) extending around the lower edge of the lid ¢ 13). 2. Plastic tank with one edge injection molded. according to claim 1, characterized in that. that the inwardly directed projections ¢ 17) surround an area which corresponds at least to the contact surface of the bottom of the plastic tank ¢ 1). Injection-molded, single-edge plastic tank according to claims 1 and 2, characterized in that it comprises: that the distances between the projections (17) correspond to their width and the underside of the lid is provided with outwardly extending projections whose shape corresponds to the projections (17) on the inside of the lid. .8 Injection-molded plastic container with one edge according to claim 3, characterized in that the projections located on the underside of the lid surround the surface that surrounds the inner upper edge of the lid (18). Injection-molded single-edge plastic tank according to one of Claims 1 to 4, characterized in that: The inner side of the lid (15) is provided on its underside with a projecting support edge (19) extending all around for receiving the inner upper edge of the lid (18) of the thicker lid. Injection molded plastic container according to claims 1 to 5, characterized in that the depth of the constriction (12) corresponds approximately to the thickness of the lower edge of the lid (13). Injection molded single-edge plastic tank according to claim 6, characterized in that the height of the constriction (12) is substantially greater than the thickness of the lower edge of the lid (13). Injection molded single-edge plastic tank according to claims 6 and 7, characterized by. that the lower edge of the lid (13) is biased against the upper side of the constriction (12). Injection molded plastic container according to claim 1, characterized in that the inclined sliding surface (10) is provided with an outwardly extending protrusion (20) extending.