DE2104193A1 - Lid closure for containers with a relatively large opening - Google Patents

Description

21OA193

10 277

ELBATAINER Kunststoff- und Verpaekungs-GmbH & Co.

7505 Ettlingen / Baden and

Badische Anilin- & Soda-Fabrik AG 6700 Ludwigshafen

Lid closure for containers with a relatively large opening

The invention relates to a lid closure for containers with relative large opening, especially for barrels made of plastic, Jugs or the like, the container on the outside at its edge has an annular bead formed from the container wall and radially protruding locking cams, while the lid an angled downwards, the annular bead in the fastening position has an encompassing edge on the outside, which is surrounded by vertical cutouts in

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several j with at least partially from the lower end portion outwardly protruding projections provided segments is divided, which when the cover is attached below the annular bead with a The clamping ring placed around the segments on the outside can be clamped against the container edge and locked below the locking cams are.

With a lid closure for containers with a large opening, i.e. so-called Wide-necked containers, a considerable drop resistance is required, since the stresses that occur when falling are due to deformation of the container and the sudden overpressure in its interior lightly press the lid closure and cause consequential damage can. This is especially true when the containers and lids are made of plastic.

There are already lid closures for containers of the type described known. For example, known plastic barrels have an annular bead on the outside of their edge and the lids have a vertical incision Outer edge subdivided into segments, which surrounds the annular bead on the outside in the fastening position of the lid. Outside around the edge of the lid a clamping ring secured in its position by projections is placed, with which the cover edge segments underneath the annular bead against the lid edge can be clamped. However, these known cover closures do not offer sufficient cover for drop loads Guarantee for a tight fit of the lid, since if the barrel is deformed in the area of the lid closure, the lid edge is often starting from the deformed point, can slip away over the annular bulge of the barrel.

It is also known to have barrels at their opening edge on the outside to be surrounded with a prefabricated reinforcement ring, which is attached to the upper edge radially outwardly protruding abutment segments for the

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Has clamping ring. The outer edge of the lid has corresponding recesses and on its lower edge also outwardly protruding segments. After putting the lid on, lie on the barrel mouth the segments at a predetermined distance and offset from one another in such a way that the clamping ring can be inserted between them and through his clamping of the lid is fixed. The sides of the segments facing the tightening strap have sloping upward or downward slopes Areas to pull the lid into a firm and tight position on the barrel mouth when the clamping ring is tightened.

This known cover closure has the disadvantages that the reinforcement ™

Kungring is inserted into the production mold before the barrel is formed and must be well welded to the edge of the barrel in order to achieve the drop resistance, which is laborious and time-consuming in terms of production technology and to achieve an economically justifiable production speed requires extensive and expensive production facilities. In addition, the ring parts must be prefabricated as molded parts, which also cause considerable costs. This known embodiment has the further disadvantage that both when clamping the cover the tensile load on the seal as well as the continuous transport load on sections of the clamping ring and the locking abutment segments must be included so that these two ™ elements are not readily available in the desired cost-saving manner can be made of a plastic.

The invention is based on the object for the above To create a particularly economical lid closure type container, in which all the disadvantages described above are avoided and on the one hand can withstand high drop loads * and on the other hand are particularly easy to manipulate, i.e. an easy closing and opening of the container, as well as a sufficient sealing security is achieved.

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This object is achieved according to the invention in that the container has at least three locking cams which are formed out of the annular bead and are arranged symmetrically on the circumference, and that in the container wall sections lying between the locking cams below the annular bead in each case at least one in the Shape the lid edge segments adapted recess is arranged.

This eliminates all of the above-described shortcomings of the known lid closures avoided. With the invention, a lid closure with almost completely interlocking fastening elements is found which are obtained in a simple manner by molding in or out of the container and lid walls and not over the usual shape of the container and lid going beyond the process engineering and make equipment expenditure necessary. The lid closure according to the invention meets all the requirements conditions mentioned at the beginning with regard to fall and transport safety, tightness, economy and easy manipulation just. Due to the design and arrangement of the shape of the lid edge segments that fit into the container depressions as well as the locking cam protruding horizontally over the folded clamping ring is summarized a multiple locking and thus optimal locking security for wide neck containers made of plastic given. As a result of the design according to the invention of the lid edge segments and the matching container depressions a completely smooth support surface that stabilizes the circumference of the container neck is formed when the cover is in place for the tightening strap.

An advantageous development of the invention for lid closures with inserted elastic sealing ring is achieved in that the recesses formed in the container edge at least on the the side facing the die ring is angled from the outer edge towards the uii-

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th running traction surface and the lid edge segments on their the side facing the container edge have adapted inclined surfaces, which when the lid is on the pulling surfaces of the container wells rest.

This is the starting point when the clamping ring is tightened from the cover Gasket tensile load has been distributed to the relatively large-area lid edge segments and the container neck itself without this To claim plastic material of the fastening elements in a manner which adversely affects the repeated fastening of the cover.

In the drawing, an embodiment of the subject matter of the invention is shown. Show it:

1 shows a diagrammatic representation of a container with a lid attached;

Fig. 2 is a side view of the container without the lid on a larger scale than in Fig. 1 and below Edge zone broken off;

Fig. 3 is a side view of the container with the lid attached, on a larger scale than in Fig. 1 and with broken and broken container below the edge zone;

Fig. 4 is a plan view of the container of Fig. 3;

FIG. 5 shows a section along the line V - V in FIG. 4, on a larger scale; and

6 shows a section along the line VI - VI in FIG. 4, on a larger scale.

In Figures 1 and 2 is a container 10 with a large, almost the Container diameter corresponding opening and a suitable, in Fig. I shown attached cover 11. The container and also the

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Lids are made from a plastic. As can be seen from Fig. 2, the container 10 has an annular bead formed out of the container wall on the outside at its edge with several, in radial direction protruding beyond its outer diameter locking cams 13, which are formed out of the annular bead and are evenly distributed with the same space on the circumference of the annular bead. On the top, facing the edge of the container On the side, the surfaces of the reduction cams run in an arcuate manner into the edge surface of the annular bead, while the cams on the lower side facing the container bottom are flattened at the same height. In the outside edge of the container , which lie between the locking cams 13, the container wall has immediately below the annular bead 12, respectively a recess 14.

In its position shown in the drawings, the cover 11 has an edge which is angled downwards and which is symmetrically introduced Cutouts 15 into several equally long segments, each arranged with the same space over the entire circumference 16 is split. The segments 16 are adapted to the container edge in such a way that that when the lid is placed on the container, the outside of the sections 12a located between the locking cams 13 of the annular bead 12 and engage in the depressions 14 when pressed against the edge of the container. The outside vertical surfaces the cover edge segments are at the same height as the adjacent ones, that is to say below the locking cams 13 Outer surfaces 10a of the container. One outside around the lid edge segments 16 placed around the band-shaped clamping ring 17 holds the segments in this tensioned position and lies itself with its upper edge directly below the locking cams 13. The clamping ring is fixed on the cover edge segments by projections 18 and 19

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lable held, which protrude above and below the clamping ring from the outside Se gmentf and the clamping ring embrace at its edges.

The cutouts 15 in the edge of the lid are dimensioned so that when the lid 11 is placed on the container, those from the annular bead 12 of the container protruding locking cam 13 over the Clamping ring 17 protrude freely through the cutouts. As already mentioned, the locking cams point to their lower, so the side facing the clamping ring, horizontal locking surfaces 20, which in the case of clamped lid edge segments 16 the Sufficiently protrude beyond the clamping ring to secure the lid in its attached position on the container.

In the lid, an elastic sealing ring 21 is inserted in an annular groove, which when the lid 11 is placed on the container 10 rests on the upper edge of the neck. The arranged in the container edge below the annular bead 12 forming the opening edge On the side facing the sealing ring, depressions 14 have a pulling surface 22 running obliquely downward from the outer edge, while the lid edge segments 16 have adapted inclined surfaces 23 on their side facing the container edge, which at With the attached lid, rest on the pulling surfaces of the container indentations. When tightening the clamping ring 17, the Lid edge segments are drawn into the depressions, the inclined surfaces 23 of the segments slide on the pulling surfaces 22 of the recesses obliquely downwards, whereby the lid is pulled into its firm and tight position on the container mouth and is held. Here, the sealing ring located between the lid and the container edge is flushed into the container Sealing form pressed.

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The number of locking cams 13 and the lid edge segments 16 can be any number depending on the size of the container opening to be determined. But there should be at least three locking cams that are equally spaced from each other, If the closure parts are deformed, the clamping ring and the cover edge segments are sure to slide out prevent from their effective locking position.

10 277
January 27, 1971

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Claims (2)

10 2 7 7 Claims ί 1. Lid closure for containers with a relatively large Opening, in particular for barrels, jugs or the like made of plastic, the container outside at its edge one from the container wall _ has formed annular bead and radially protruding locking cams, while the cover has a downwardly angled edge encompassing the annular bead on the outside in the fastening position, which through vertical cutouts in several, at least partially with from the lower end portion to the outside protruding projections provided segments is divided, which when the cover is attached below the annular bead with a clamping ring placed around the segments on the outside against the container edge and below it the locking cams can be locked, characterized in that the container (10) has at least three locking cams (13) formed out of the annular bead (12) and arranged symmetrically on the circumference has, and that in the lying between these locking cams container wall sections (12a) below of the annular bead in each case at least one recess (14) adapted in shape to the cover edge segments (16) is arranged. 2. Deckelvf.-rschluss according to claim 1, characterized in that - 10 / Q9ft'U / 0 <U 1 that the locking cams (13) on the lower, with the cover (11) on the clamping ring (17) facing side are each flattened at the same height. 3. Lid closure according to claims 1 or 2, with inserted elastic sealing ring, characterized in that the recesses (14) of the Container edge at least on the side facing the sealing ring (21) one inclined from the outer edge downwardly extending traction surface (22) and the lid edge segments (16) on their edge of the container facing side have adapted inclined surfaces (23), which when the lid is on the pulling surfaces of the container indentations. 277
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