DE1536134B1 - Container lock - Google Patents

Description

1 2

The invention relates to a container inner wall lowering into a stable position, which - can be reused multiple times.

equips, consisting of a cover with a truncated cone By this design of the cover, the one

shaped middle part, whose coat on the larger permanent remaining of the middle part in the lower Secures end face in a connecting ring of about U to 5 position, the inward protruding part trapezoidal cross-section merges, with the seal by the deformation of the U- to Leg of the connecting ring in the locking point trapezoidal connecting ring from inside to development of the lid are clamped against each other and pressed against the outside of the container wall and grant one Record ring-shaped seal. thus provides a good seal and a safe one It is known to provide a container closure with an io retention of the container closure on the container frustoconical shell part and one that is independent of whether the container edge is cylindrical, the conical jacket adjoining the connecting ring inwardly or conically outwardly to train, which is formed up to the edge of the container.

tend to take up, the conical shell part. In a further development of the invention, the lowering

for a good contact of the connecting ring on the 15 of the lid surface facilitated by the fact that the man-container edge cares. In this known embodiment, the frustoconical central part is approximately correct however, the container closure has primarily angular indentations, the depth of which is in the rich line held by clamping cams, which increases under a tang on the Deekel surface, Grip the bead-like thickening of the container edge. A further development of the invention consists in

However, such a container closure can only be in 20 that the outer wall of the connecting ring the same compound with a an appropriately trained distributed excessively to the extent to having circumferentially Deten edge container used advertising device having extending slots which each g to. For simple, pressed glasses, which have a bead of the lower edge pressed down and inward in such a way on the upper edge and which is also in their shape that, apart from a transition area, dimensions are different, such a bead would be at the ends of the Slit on the outer wall of the rather container closure is completely unsuitable.

Furthermore, a container closure with a

U-shaped edge flange is known, in which the averaging of the container closure is also possible on containers part is curved upwards and allows before application, the external dimensions of the on the container from its stable position past- 30 circular shape and of a certain diameter going into a downwardly depressed position due to manufacturing tolerances, is brought, wherein the edge flange expands The invention is explained in more detail with reference to the drawing

and easily placed on the container rim are explained. It shows

can. After placing the cover on the Fig. 1 eme perspective view of a container edge tries the now released center key 35 before it is applied to the partially to return to its starting position resiliently, sealing container,

whereby the diameter of the outer wall of Fig. 2 is a vertical section through the cover

U-shaped edge flange again reduced in size and according to F i g. 1 before its deformation, pressed firmly against the outer surface of the container Fig. 3 shows a section corresponding to Fig. 2, wherein

will. This is due to the springing back of the arched 40 of the lid in its closed position on the loading lid surface decreasing tensioning of the lid after deformation of the central lid base leg ensures a tight fit of the lid is shown in part,

the container. Such an embodiment of the FIG. 4 a partial plan view of the lid, in which the

Cover requires, apart from an elastic cover sector S ^1, the cover state according to FIG. 2 ent | Material for the cover, a cylindrical Ausgestal- 45 speaks, ie before the deformation, while the tang of the container edge, since with an inward sector part S ² the deformed cover according to FIG. 3 conical edge of the container corresponds to the lid on,

The reason for the inwardly directed clamping force in Fig. 5 is a vertical section through a

Outer edge of the U-shaped edge flange itself key cover, which is applied to a metal can can pull itself off the container while 5 °; this cut is along line 5-5 in in the case of an outwardly directed container edge, FIG. 6,

Sealing effect because of the insufficient contact surface. FIG. 6 shows a plan view of one half of the cover

of the outer edge of the U-shaped edge flange according to FIG. 5,

is deficient. FIG. 7 shows a section corresponding to FIG. 5

In connection with screw or clamp locks 55 along line 7-7 in FIG. 8 after application sen it is well known to put ring seals between the closure lid on the metal can, see lid and container edge jammed. 8 shows a plan view of one half of the

The invention is based on the object of providing a cover according to FIG. 7, Container closure of the type explained in the introduction there- Fig. 9 and 10 to design vertical sections through a cup that is independent of 60-shaped glass containers with a closure lid, the inclination of the container edge both with that in Fig. 9 before the deformation of its central glasses provided with a smooth edge as well as with a lid part and in FIG. 10 after the deformation rolled edge provided Mefalldosen a herme- this lid part is shown. table seal guaranteed. According to FIGS. 1 to 4, the container closure

According to the invention, the solution to this opening 65 for one glass or one of another would be that the lid surface of the tamped-cone material used container R , the shaped central part of which, with pivoting of the inner opening, has a flat opening edge 1, one from the wall of the connecting ring towards the loading opening edge downwards in a frustoconical

Shaped jacket 17, radial indentations 19 are provided which, when the central middle part 10 is flattened, allow a radial widening or enlargement of the diameter of the large outer base 18 from a starting value 2 t ¹ to a value 2 r ² , the base edge extending up to to the in Fi g. 3 with 18a or up to a corresponding circumferential line moves radially outward, as will be explained further below.

The connecting ring 11 forms in the interior of the cover a circumferential, trapezoidal cross-section and downwardly open annular groove 20, which serves to receive an annular seal B made of rubber or similar flexible material. The ela-

narrowing container wall 2 with an outer surface 3 which initially runs cylindrically at the upper edge and which is adjoined by a frustoconical surface part 4 with a downwardly decreasing diameter. This container R can have dimensional tolerances and irregularities on the inner surface of the opening.

The container closure consists of a lid A and a circumferential seal B.

The relatively thin-walled cover is made of metal, a metal alloy or another suitable one Material made by compression molding. It has a lateral peripheral part and an upward one arched or rising ground.

The lateral peripheral part can have a cylindrical seal either on the inner surfaces Have the shape or the shape of a downward glued to the groove or narrowing directly into the groove Truncated cone. It is specially designed to be used.

moderate to form the lateral peripheral part in such a way that the central middle part 10 of the cover is present

that on a substantially cylindrical wall the cover is attached by a height h in part to a downwardly widening wall part 6 20 over the connecting ring 11 of the cover; the connection, which ends in an inwardly folded bond between its large base 18 and the edge 7. The substantially cylindrical surrounding inner side wall of the annular groove 20 is still located essential catching part 5 is provided with narrow slots 8, which borrowed deeper.

run in the circumferential direction parallel to the cover. The closure cover A is applied

The length of these slots 8 should as far as possible be greater than 25 in the following way: The cover is pushed as it should be 4 cm and preferably between 5 and 7 cm in FIG. 1 and 2 is shown, on which are with R , while the unslit sections between designated, for example made of glass, each holds two successive slits and at the same time exerts a circumferential length of the connection. less than 5 cm, preferential ring 11 of the lid, so that the wise between 3 and 4 cm have. This design ring seal B fits well to the upper edge of the opening in the slots and is adapted to the diameter of the vessel. For this purpose one can keep holder independent. The lower edge of the slot 9 each an annular part of a pressure tool verder circumferential slots is pressed in and after turning, which is offset on a central tool part vertically inside the lid, is guided on the one hand parallel and via springs on one fixed to the axis XX of the lid, whereby the axial displacement of the shoulder collar connected to the central part of the inwardly pressed part of the undersupported so that when the Werkren slit edge moves downward from the two ends m and ρ of the tool, first the ring part of the tool on the slot, where the axial displacement and the connecting ring 11 of the cover strikes and the displacement towards the inside is zero, until the springs then compress, while the central area η of the slot, where the axial displacement of the central displacement continuing its downward movement is greatest, increases, on the other hand, the tool part is on the flat middle cover surface perpendicular to the axis XX , whereby the displacement of the 12 of the middle part 10 supports, presses this downward slot edge inward on a short section and thus causes the flattening of the cover, steadily increasing at the two ends of the slot The large base 18 of the truncated cone-shaped jacket and then remains constant so that the larger part 45 17, the original diameter of which was 2 t ¹ , erder the offset slot edge 9 essentially then extends to the point 18 a with the through one to the cover axis XX central circular arc knife 2 r ² , while the radial image is formed , which when the lid is placed on the imprints 19 by flattening also in the container, the outer shape of the container R is stretched somewhat in the direction of the catch. The large base 18 can nestle. The lower slot edges 9 displaced below each of the circumferential groove 20 with the endeavor to close the circumferential groove 20 and their inner wall 21 radially outward

press, this wall up to position 21 α in
F i g. 3 arrives, the seal B is deformed and in the
with 22 on the inner surface of the area
55 presses the opening wall 2 of the vessel R, whereby
the perfect seal is achieved.

The lid A is held on the closed container by the interaction of the external pressure exerted by the resilient outer slit edges 9 and the radial pressure exerted at the point indicated by the seal on the inner surface of the container opening. If the peripheral part of the cover does not have any external elastic spring members, such as the lower slot on which a frustoconical jacket 17 borders 9, the cover is closed solely by that which is exerted downwards to its great external radial pressure of the seal B held, which also extended ren base 18, with which it is generally sufficient to the connec- tion ring 11 is connected. In the truncated cone, the container is opened with the help of a

lie elastically against the outer wall surface 4 of the container R , even if this surface has large diameter tolerances and a contour that is not perfectly circular.

The upper bottom part of the lid is at its periphery with the side just described Perimeter wall connected. It comprises a frustoconical central part 10 and a connecting ring 11.

The frustoconical middle part 10 has a small upper cover surface 12, which over a weak pronounced ring shoulder 14 serving for stiffening merges into a narrow, flat ring part 15,

suitable tool with which one grips under the inwardly folded edge 7 of the lid. After removal, the lid can be placed on the vessel opening again without difficulty, the upper mouth edge 1 of the container reinserting itself into an annular groove 23 which was formed in the seal B to a greater or lesser extent as a result of the first closure. The deformed lid permanently retains the deformation that it underwent when it was first applied to the container; this is due to the permanent expansion of the inner wall 21 of the lid and in particular its base 18; Furthermore, the permanent deformation of the frustoconical shell 17 and its indentations 19 can contribute to maintaining the shape of the deformation of the cover, especially if a less elastic material, such as aluminum or its alloys, has been used to manufacture the cover. This permanent deformation of the material can also be superimposed by an elastic disc spring spreading effect - possibly with a dead center position being exceeded and the snap action of the lid bottom - as described below in the description of the example according to FIGS. 9 and 10 is shown.

In Figs. 5 to 8 a closure of a cylindrical can is shown. The metal can R ¹ is provided with an inwardly rolled upper opening edge 24. The closure cap A ¹ has a cylindrical lateral peripheral wall 5a without slots and a lower, inwardly folded edge Ta. The frustoconical jacket 17 is provided with indentations 19 α only on limited peripheral sections; four short circumferential sectors 25 are free from such indentations.

If a pressure is exerted on the central flat cover surface 12 of the middle part 10 in order to bring the cover base from its initial position according to FIG. 5 into the position 12 α , the frustoconical casing 17 flattens out in the area of the indentations 19 α (FIG. 7 ) except for the form 17α; In this area, the circumference of the base 18 reaches the position 18 α and slides under the inner roll collar 24 of the Dosei? ¹ , while in the area of the sector sections 25 which have no indentations and which cannot expand in circumference, the base only pushes outward as far as point 18 b without reaching behind the inner roll collar 24 of the can; a slight deformation thus occurs at the ends of the sector sections 25 in the area of their connection with the peripheral part of the base 18.
To release the closure, it is useful to lift the lid in the peripheral area of one of the sector sections 25 by moving its pawl between the outer peripheral surface of the can and the inwardly folded edge 7 α of the lid A ^1; the sector sections 25, which are not locked behind the roll collar 24 on their inside, result in four circumferential zones in which the lid can be detached from the can more easily than on the other circumferential areas.

9 and 10, the closing of a glass container R ² , which has the shape of a cup glass, is shown. The central flat cover surface 12 of the cover A ² is pressed in after the cover has been placed on the cup rim 26 up to the position 12 b , a spreading locking being achieved by flattening the raised central part. The base part 18 of the frustoconical shell rests, as shown with 18 α , on the upwardly converging inner wall 26, whereby the lid is clamped on the container. In this way, a seal that is both tight and mechanically secure is obtained, which makes it possible to use glasses of this type for storing spices, condiments or other products.

Claims (3)

Patent claims: 1. Container closure that allows multiple reuse, consisting of one Lid with a frustoconical middle part, the jacket of which on the larger end surface is in a Connecting ring passes from approximately U to trapezoidal cross-section, the legs of the Connecting ring are tensioned against each other in the closed position of the lid and one Record annular seal, thereby characterized in that the cover surface (12) of the frustoconical central part (10) with pivoting of the inner wall (21) of the connecting ring (11) can be lowered into a stable position in the direction of the inner wall of the container. 2. Container closure according to claim 1, characterized in that the jacket (17) of the frustoconical Central part (10) has approximately rectangular indentations (19), the depth of which increases in the direction of the cover surface (12). 3. Container closure according to claim 1 or 2, characterized in that the outer wall (5) of the connecting ring (11) evenly distributed over the circumference, extending in the circumferential direction has extending slots (8), the lower edge (9) of which is pressed downward and inward in this way is that he, apart from a transition area at the ends of the slot on the The outer wall of the container (2) is in contact. For this purpose 2 sheets of drawings