WO2017216187A1

WO2017216187A1 - Drinking container unit having a drinking container and a cover/base

Info

Publication number: WO2017216187A1
Application number: PCT/EP2017/064450
Authority: WO
Inventors: Simon Mario Nüesch; Dominique Nikolaus Felsch
Original assignee: Desio Gmbh
Priority date: 2016-06-13
Filing date: 2017-06-13
Publication date: 2017-12-21

Abstract

The invention relates to a drinking container unit (1) for holding a liquid, comprising a drinking container (2), which has an at least approximately rotationally symmetrical drinking opening (4) defined by a drinking peripheral edge (3), in particular in the dimension of the opening of a drinking glass, and comprising a cover (5), which is prepared for closing the drinking container (2), in the interior (6) of which there is a pressure elevated in comparison with the surroundings, at the drinking opening (4) by means of a threaded connection formed by a cover external thread (7) and a container internal thread (8), wherein an annular groove (9) formed by the cover (5), which annular groove is formed by an outer flank (10), an end ring (11), and an inner flank (12), lies against the drinking peripheral edge (3) in such a way that the interior (6) is sealed. In a further aspect of the invention, which possibly can be claimed independently, the outer contour of the drinking container has substantially an onion shape in the region of a base, a contact section having a contact section outside diameter thus being formed, wherein the contact section outside diameter corresponds to the outer flank diameter.

Description

description

Drinking container unit with a drinking container and a lid / base

The present invention relates to a drinking container unit, preferably for carbonated drinks, such as beer or sparkling wine, or wine, according to the preamble of claim 1. Generic drinking container units have a drinking container with a drinking opening, in particular in the dimension of the opening of a drinking glass on.

Background of the invention

The background of the invention is to combine the advantages of a bottle, that is about its industrial fillability and mobile handling, with the advantages of a glass, that is about the increased drinking pleasure.

The present invention is directed in particular to be able to close the required for the increased drinking pleasure wide drinking opening efficiently, safely and robustly, without plummeting in expenses.

Another, possibly independently claimable aspect of the invention aims to make the handling of a multi-part drinking container in a bottling plant as comfortable as possible.

State of the art

Various solutions are known from the prior art, which are dedicated to the closure of wide drinking openings. For example, German Utility Model DE 20 2004 015 220 U1 discloses a lid which can be coupled in a bayonet-like manner to a drinking opening. Another generic prior art is known from the documents US 2009/0001043 A1 and CH 703 939 A2. A disadvantage of this prior art is that the lids are not able to withstand the high internal container pressures, which are present in carbonated beverages, without deformation. Frequently, the deformations here are of such dimensions that the tightness of the drinking container unit to the environment suffers.

Furthermore, solutions are known from the prior art, as a drinking container is to be led in a bottling plant. Thus, US Pat. No. 4,620,985 discloses a method of how to guide a bottle as gently as possible on a filling line. Furthermore, the above-mentioned document US 2009/0001043 A1 discloses, in addition to a screw connection of a lid on a bottle, such a unit in which the lid forms the base. Further devices are known from the documents WO 99/37190 A1 and US 2008/0264958 A1.

A disadvantage of those solutions is that no gentle handling of multi-part container units, which have a stand separate from the drinking container, on the filling line of a bottling plant is possible.

BRIEF DESCRIPTION OF THE INVENTION In view of this prior art, the present invention is the

The object of the invention is to remedy or at least mitigate the disadvantages of the prior art. In a first aspect of the invention, such a drinking container unit is to be disclosed in which the lid securely closes the (wide) drinking opening even under changing environmental conditions and the lid is at the same time detachable from the drinking container reversibly and without high expenditure within a very short time.

This is achieved according to the invention by means of a drinking container unit with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.

On the other hand, another aspect of the invention, which is optionally independent claimable, is the object of such a drinking-container unit, which has a base and a separate drinking container to be filled therefrom, efficiently, that means, for example, energy / material friendly and low noise to move on the filling line of a bottling plant.

A first independently claimable article of the invention is accordingly a drinking-container unit for receiving a liquid, which has at least one drinking container and a lid. With regard to a container height direction, the drinking container forms or has an at least approximately rotationally symmetrical drinking opening defined by a drinking circulatory edge, in particular in the dimension of the opening of a drinking glass. The dimension of the opening of a drinking glass is here understood as meaning an opening to which the lips of a consumer can snuggle up comfortably. Such openings are in particular larger than bottle openings, which are optimized for a bottling plant. The lid is prepared to close the drinking container, in the interior of which, in the filled state, an increased pressure relative to the environment, mainly due to the carbonic acid present preferably, at the drinking opening via a reversibly detachable screw formed by a cover outer thread and a container internal thread , The lid and the screw connection are therefore designed such that they withstand an overpressure in the container interior with respect to an atmospheric pressure.

According to this first aspect of the invention, an annular groove, which is formed by the cover and opens in the container height direction, which can also be referred to as a circumferential gap, seals the inner space against the drinking circulation edge. The annular groove is formed by an outer flank, a front ring / outer ring surface and an inner flank. Here, either a line or a surface contact can be realized between the annular groove and the drinking circumferential edge. The annular groove thus encompasses the drinking circulation edge from both sides.

Thus, it can be achieved that the increased pressure of the interior instead of acting on a plane, the entire diameter spanning surface, only on the end ring of the annular groove, which in the container radial direction, compared with the diameter of the lid, small width, applied is, whereby the resulting in the cover / to be absorbed by the cover bending moments due to the small lever arm of the end ring are small and thus prevents leaks causing deformation of the lid.

In other words, this first independently claimable aspect of the invention can be functionally described in such a way that the annular groove of the lid surrounds the recirculating drinking edge / forms a narrow end face in the container radial direction such that it is not or only slightly due to bending moments due to the small lever arm / Is negligibly deformable. Thus, the sealing effect of the voltage applied to the drinking circumferential edge annular groove is reliably guaranteed even in changing environmental conditions and the action of external forces on the drinking container unit.

In a first preferred embodiment of the first aspect of the invention, the outer flank, the end ring and the inner flank each cover outer surfaces are by delimiting the lid to the outside, that is to the environment. This allows a material-saving design of the lid, which allows a slim nestling of the lid to the drinking circulation edge.

More preferably, the outer edge and the end ring extend transversely, in particular perpendicular / orthogonal, to each other. That is, they are preferably at right angles to each other and are fixed in their position relative to each other substantially rigid. Due to a, as described below, advantageous Ku n ststoff a shaping is a rigidity, as is common in metallic materials, ring between the outer edge and the front only at great expense to achieve. Substantially rigid therefore means in this context that the two surfaces are elastic, but not plastically deformable to each other.

In this embodiment, the outer flank and the end ring are structurally coordinated in particular such / dimensioned to each other that caused by the increased pressure buckling / deformation of the end ring in the container longitudinal direction causes a buckling counteracting contact between the outer edge and the outside of the drinking container. Thus, for the sealing effect between the container interior and the environment passing through the annular groove Self-reinforcing achieved: If the annular groove bulges outwards, the outer edge gets due to their substantially rigid coupling in stabilizing or even sealing contact with the outer surface of the drinking container. Thus, the goal underlying the first aspect of the invention is further taken into account.

Advantageously, the outer edge and the outer side of the container to form a gap in a state in which the annular groove undergoes no bulge, at least partially contactless each other. Thus, the lid over the inner edge to center on the drinking container and a geometric overdetermination is avoided.

In a further advantageous embodiment of the first aspect of the invention, the screw connection between the outer cap thread and the container inner thread is fluid-permeable and preferably designed pressure shock absorbing, so that the increased pressure in the interior acts to a large extent or even completely on the end ring without a pressure reduction by the screw is realized. Such a pressure release thread unfolds particularly when loosening the screw advantages. Due to the inventive design of the annular groove of the lid, which undergoes any pressure relief through the thread in this embodiment, able to withstand the elevated container interior pressures with complete seal. Thus, a separation of the function is achieved: while the screw fixes the lid in the container longitudinal direction, the annular groove takes over the pressure compensation and the seal of the lid.

More preferably, the screw is seen from the sealing contact between the annular groove and the drinking circumferential edge of the container interior facing or is in the effective direction between the sealing contact and the interior, the screw is arranged. Thus, the screw is connected upstream of the sealing contact and assumes a protective function this. Even if the screw connection is designed to be completely fluid-permeable, the upstream connection has a protective effect for the tightness, since it acts on the annular groove acting surface voltage unified in time and thus dampens fluctuations. In contrast to an arrangement of the screw in a downstream of the drinking circulation edge region, this version accordingly achieved protection in analogy to a breakwater.

In that embodiment, between the screw connection and the sealing contact, moreover, a clearance is preferably formed as a buffer zone for pressure fluctuations. Thus, the sealing contact between the drinking circumferential edge and the annular groove does not immediately follow the thread, whereby fluctuations, which may also occur locally in the circumferential direction, are efficiently damped and evened out.

Constructively, the cover is preferably such that in the container longitudinal direction, the length of the inner edge exceeds the length of the outer edge, so that the aspect ratio between the outer edge and the inner edge preferably between 1:10 and 1: 1, in particular at about 1: 5, particularly preferably at 1: 3, lies. Thus, a support of the Trinkbehäiters is achieved from the inside by means of the inner edge, while at the same time outside by the shortened outer edge of a slim design simplifies logistics.

A further advantageous embodiment is characterized in that the inner edge and the outer edge run substantially parallel in the container longitudinal direction and / or the end ring extends in the container radial direction. Thus, the end ring is configured perpendicular to the direction of action of the container internal pressure to accommodate this completely, without redirection or forwarding, as enabled by the annular groove according to the invention. Furthermore, the parallel configuration of the inner and outer surfaces causes them to encase the drinking circulatory edge and thus assume a protective function of the drinking circulatory edge, which the consumer applies to his lip during consumption, and that the sealing surface, ie the surface to which the highest Compressive stress acts, minimize. Furthermore, this sheath allows stabilization of the wide drinking opening. Next constructively, the width of the end ring in the container radial direction to the outer diameter of the lid takes a ratio of less than 1: 4, preferably less than 1: 6, a. This increases the effect according to the invention of the low bending moment absorption of the end ring.

In particular, when the lid radially within the annular groove facing the interior cylinder portion, which may also be referred to as (lid) recess or receiving shaft, whose outwardly facing, facing away from the interior end face in the container longitudinal direction with respect to the axially outer edge of the Head ring is set back, the seal can be further optimized. Because the cylinder portion is separated from the annular groove by a circumferential annular shaft / annular gap and thus has a much smaller diameter than the lid. The bending moments acting on the cylinder portion thus also have a, compared to a completely flat lid, low lever arm and are thus compensated.

It is also advantageous if in the container radial direction of the annular shaft exceeds the annular groove by a factor greater than or equal to three. The above-mentioned effects are particularly effectively caused by those geometries.

For the first aspect of the invention, a sealing element is preferably arranged on the side facing the interior of the annular groove, which is prepared to be in sealing contact with the drinking circulatory edge and thus favorably influence the claimed sealing effect.

Further advantageously, the drinking container at its end facing away from the lid to a filling nozzle, which is closed with a cap, preferably in the manner of a crown cap. In this case, the cover by means of the screw connection can be detached from the drinking circulation edge in such a way that it forms a base of the drinking container unit coupled to the filling connection. This principle of action is extensively described in the claimed priority with the number DE 10 2016 1 10 807, which is herewith fully incorporated into this document. The screw connection according to the invention is optionally configured by means of one or more, preferably three or four, threads. The more threads there are, the faster it is possible to loosen the lid. The advantageous fluid passage of the screw connection by means of the pressure relief thread can be realized, for example, by means of axial slots, that is to say in the longitudinal direction of the container, or also by means of a passage in the circumferential direction due to the thread pitch.

The drinking container unit according to the invention, in particular the lid, is preferably made of a plastic, such as polypropylene, PET, PLA, PEF or PEN Tritan or a bioplastic, by means of an injection molding process.

In other words, it can be said that the drinking container is preferably formed from a cylinder or cup-like liquid receiving / storage section and a filling nozzle, which may also be referred to as a foot section. The liquid intake / storage section is preferably again subdivided into a drinking section and a central section.

A second aspect of the invention, which may optionally be claimed independently of the first aspect, relates to a drinking-container unit which is prepared for filling in a filling installation. On a bottling plant, a large number of bottles are usually arranged side by side and guided, so that the interaction of the individual bottles, that is to say joints with one another, has to be taken into consideration.

This drinking container unit in the second aspect has a base serving as a pedestal. This can be considered in a different operating condition than in the bottling plant as a lid. The base / lid is prepared to stand on a filling line of the filling plant. It is bounded radially outwardly by a cylindrical outer edge. Furthermore, the drinking-container unit according to the second aspect has a drinking container which is reversibly coupled, preferably screwed, to the base in such a way that it projects out of the container in the container (unit) height direction and forms a contact portion which is prepared. to provide a defined reference point in the bottling plant. The drinking container has on its end facing away from the base a Befü hope or defines this. About the filling the drinking container unit is prepared in a bottling plant to a liquid, preferably a carbonated beverage, such as beer or sparkling wine, record.

According to this further aspect of the invention, the outer contour of the drinking container in the region of the contact portion, that is, in an area in which the drinking container in the filling is prepared to provide a point of contact, such as for a gripping arm or another drinking container unit to provide Contact section outer diameter represents the maximum outer diameter of the drinking container, in the container height direction on a bulbous shape. This bulbous shape is shaped essentially in the manner of an onion shape, or in the manner of a double-sided cut egg shape / a pear shape / a tuber shape. In other words, that portion of the drinking container has a shape whose outer diameter decreases above and below the maximum outer diameter. Here, it is an essential aspect of the second aspect of the invention that the contact portion outer diameter corresponds to the outer edge diameter.

In this case, the bulbous shape in the sense of the invention is to be understood as meaning a shape which decreases radially and continuously in diameter above and below the contact section. In the wider area of the drinking container, d. H. Regardless of the bulbous shape in the region of the contact portion, any diameter variations, ie renewed diameter increases or decreases, are possible outside the contact section and form part of the inventive concept.

Thus, the largest outer diameter of the base is equal to the largest outer diameter of the drinking container ("contact portion outer diameter"), whereby the Trinkbehältereinheit along the container height axis has two defined contact points, which simplifies their handling in a bottling plant and thus accelerates the filling. In other words, this second aspect of the invention can be described such that the drinking container has such a curved shape that its maximum outside diameter, which is achieved only in a small portion due to the continuously curved shape of the drinking container, the outer diameter of the base, the occupy a capping function as described in detail in the priority application claimed herewith.

Advantageously, for that second, independently claimable aspect, the bulbous shape causes a plant-orthogonal abutment line between the contact section outer diameter and the outer flank diameter. Thus, the advantages described in a bottling plant unfold completely.

In this embodiment of the further aspect, in addition to the contact section, the outer flank is also preferably prepared to make / produce on the filling line a, preferably linear, contact with an outer flank of another drinking container unit. In this way, a slender guidance of a multiplicity of drinking container units on a filling line is ensured.

In a further advantageous embodiment of the second aspect of the invention is, in the container height direction, the length of the contact portion, that is, the length of the drinking container section with the maximum outer diameter, small compared to the length of the drinking container. This geometric relationship is already implicitly described by the onion shape and helps to ensure the desired line contact on the filling line.

Preferably, in this aspect, an upper abutment surface is formed adjacent to the contact portion and a lower abutment surface is formed downwardly adjacent. The upper abutment surface and the lower abutment surface are thereby inclined relative to the container height direction by less than 10 °, preferably less than 5 °. Thus, the contact portion soft transitions to the adjacent areas, which also facilitates the production, such as by injection molding, due to the elimination of sharp transitions. The second aspect of the invention is further based on a method in which drinking container units are moved according to that second aspect on a filling line of a filling plant. In this method, a first drinking container unit and a second drinking container unit are each guided in a moving manner on the filling line. In this case, according to the invention, the first and second drinking container units touch each other at least temporarily, at least during the movement in the contact section and / or the outer flank.

Thus, by means of the installation according to the invention of the sections provided for this purpose, at least one predefined installation line is created which simplifies the handling of the drinking container units in the filling installation.

The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures. The figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals. Show it:

1 shows a longitudinal section through a drinking container unit according to the invention in a first embodiment and a first operating position.

FIG. 2 shows a side view of the drinking-container unit from FIG. 1; FIG.

Fig. 3 is a perspective view of a lid in a first

embodiment;

4 shows a longitudinal section through the lid.

Fig. 5 is a plan view of the lid;

Fig. 6 is a side view of the lid;

Fig. 7 is a bottom view of the lid; 8 shows a longitudinal section through the drinking container unit of the first embodiment in a second operating position,

9 shows a side view of the drinking-container unit from FIG. 8 a longitudinal section through a foot section of the drinking-container unit in a second embodiment;

Fig. 1 1 shows an area of Fig. 10 enlarged; a drinking container in the second embodiment shown in perspective; and the drinking container of FIG. 12 in longitudinal section.

In Fig. 1 drinking container unit 1 is shown for receiving a liquid. It is made up inter alia of a drinking container 2, which has a defined by a drinking circulation edge 3 drinking opening 4, and a lid 5, which is prepared to the drinking container 2, in the interior 6 a relation to the environment increased pressure prevails at the drinking opening 4 to close over a screw formed by a cover outer thread 7 and a container inner thread 8 screw.

The lid 5 forms, as will be explained in more detail in connection with FIG. 4, an annular groove 9, which is composed of an outer edge 10, an end ring 1 1 and an inner edge 1 2, from. The annular groove 9 sits the interior 6 sealingly on the drinking circulation edge. 3

The drinking container unit 1 from FIG. 1 is composed of a total of three components. In addition to the drinking container 2 and the lid 5, one of the drinking opening 4 facing away from the filler neck 13 of the drinking container 2 is closed with a cap 14 in the manner of a crown cap. In addition to an outer surface 15 of the drinking container 2 in this case also the outer edge 10, the end ring 1 1 and the inner edge 12 of the lid 5 to the outside, ie pointing to the environment. Upon closer inspection of the Interaction between the cover 5 and the drinking container 2 also falls on that between the screw and the bottom of the annular groove 9, a gap

16 is formed. FIG. 2 shows the drinking-container unit 1 from FIG. 1 in a side view.

The section line l-1 indicates the sectional plane shown in FIG. With the reference number

17, the container height direction is referenced. On the outer edge 10 is a corrugation

18 provided. This increases the coefficient of friction of the outer edge 10 and thus facilitates a user the release of the lid 5 of the drinking container. 2

In Fig. 3, the lid 5 is shown in perspective. The outer edge 10 with the corrugation 18, the end ring 1 1 and the inner edge 12 define the annular groove 9 and delimit the lid 5 to the outside. By means of a kind of tulip shape, the cover forms radially inside the end ring 1 1 first a circumferential annular slot 19, within which in turn a the interior 6 facing away from end face 20 is arranged. In the container radial direction, the width of the end ring 1 1 is below the width of the end face 20 and below the width of the annular slot 19, as can be seen unambiguously from FIG. The sectional view of the lid 5 in Fig. 4 further provides information about the

Structure and its dimensions. Thus, the end face 20 in the container height direction 17 offset from the end ring 1 1. The lid 5 further forms a cylinder portion 21. This correlates in width with the width of the annular shaft 19: the wider the cylinder portion 21, the narrower the annular shaft 19. According to the invention, the annular groove 9 is tuned to the drinking circumferential edge 3. Thus, it is narrow compared with the annular duct 19 and the cylinder portion 21.

The lid outer thread 7 is arranged in a region of the lid 5, which is exceeded by the length of the outer flank 10. Thus, the lid outer thread 7 is protected in a disassembled state of the outer edge 10.

FIGS. 5, 6 and 7 show the cover 5 in an external view (FIG. 5), from the side (FIG. 6) and from the inside (FIG. 7). In Fig. 5, the relationship is shown schematically, that the outer radius of the end ring 1 1 is about twice as large as the outer radius of the end face 20, while the width of the annular slot 19 exceeds that of the end ring 1 1. In contrast, FIG. 6 schematically shows the relationship that the inner flank 12 is more than twice as long as the outer flank 10. FIG. 7 shows the underside of the cover 5 from FIG. 6. In this case, the cover outer thread 7 is next to the cylinder section 21 shown as a pressure relief outer thread with axial slot 22. In Fig. 8, the drinking container unit 1 is shown in a sectional view. In contrast to Fig. 1, the lid 5 serves as a base / stand 5. The drinking opening 4 has a pleasant width to drink from it. In this operating state, the annular groove 9 is prepared to collect on the lid 5 draining residues of liquid. Instead of a pressure compensation so here is a collection tank function realized. The end ring 1 1 is used in this operating condition as Anlagering / surface on a floor. The encircling annular shaft 19 allows a shutdown of the drinking vessel unit 1, even on uneven surfaces.

Finally, FIG. 9 shows the drinking-container unit 1 from FIG. 8 in a side view. Thus, the drinking container unit 1 in this state represents a wheat beer glass.

Finally, FIG. 10 shows a section of a drinking container unit V in a further, optionally independently claimable embodiment. It has a drinking container 2 'with a drinking container edge 3'. A drinking opening 4 'is closed by a base 5', which is assigned to the cover 5 of the embodiment of Figures 1 to 9 and closes an interior 6 'to the environment. The base 5 'forms in this embodiment, an end ring 1 1', to which a gap 16 'adjacent. For the second aspect of the invention, a contact portion 24 'is essential. This is characterized by the fact that at this point the outer diameter of the drinking container 2 'is the maximum outer diameter. It is called the contact section outside diameter 25 '. The amount of Contact portion outer diameter 25 'is the outer diameter of the outer edge 10', the outer edge diameter 26 ', identical. This allows, as disclosed in the introduction, an efficient management of the drinking container unit 1 'in a filling plant.

The socket 5 'facing portion / region of the drinking container 2' has a bulbous curved shape, which has reached its maximum curvature or its maximum outer diameter in the contact region 24 '. That portion of the drinking container 2 'can be regarded as a double-cut egg, which is inserted into the base 5'. According to the invention, the outer flank diameter 26 'and the contact portion outer diameter 25' are precisely matched.

The region above the contact section 24 ', that is to say on the side of the contact section 24' facing away from the base 5 ', is referred to as upper abutment surface 27'. This has in contrast to the contact portion 24 'on a slope / inclination. It therefore ensures that after the contact portion 24 'of the container diameter decreases upward again.

The region below the contact section 24 ', that is to say on the side of the contact section 24' facing the base 5 ', is referred to as the lower adjoining surface 28'. This, in contrast to the contact portion 24 'on a slope / inclination, which is opposite to the slope / inclination of the upper abutment surface 27'. Measured at the contact portion outer diameter 24 'as the axis of symmetry, the upper and lower abutment surfaces 27', 28 'are symmetrical. The lower abutment surface 28 'also ensures that decreases after the contact portion 24', the container diameter down again.

The enlargement of the base 5 'shown in FIG. 1 1 shows how the drinking container 2' exits the outer flank 10 ', namely undergoes a radial widening at the point referenced by reference numeral 29'. This expansion increases until the contact portion outer diameter 25 '(see Fig. 1) is reached. Finally, FIGS. 12 and 13 illustrate the drinking container 2 'in the second aspect of the invention in perspective (FIG. 12) and in a longitudinal section (FIG. 13). The curvature / momentum which forms the contact section 24' is thereby more obvious in the region of the drinking opening 4 'as on the opposite side, where a filling opening 23' is formed, arranged.

In Fig. 13, the upper abutment surface 27 'and the lower abutment surface 28' is again shown as adjacent to the contact portion 24 'surfaces. Depending on which inclination these surfaces 27 ', 28' assume, the onion shape of the drinking container 2 ', which may also be referred to as a pear shape, is more bulbous or slimmer. The degree of bulging determined by the inclination of the surfaces 27 ', 28' is to be determined as a function of the contact section outer diameter 25 'and the outer edge diameter 26'.

REFERENCE CHARACTERS

1, r drinking container unit

2, 2 'drinking containers

3, 3 'drinking circulation edge

4, 4 'drinking opening

5, 5 'lid / base

6, 6 'interior

7, 7 'cover outer thread

8, 8 'container internal thread

9 ring groove

10, 10 'outer edge

1 1, 1 1 'end ring

12 inner flank

13 filling nozzles

14 cap

15 container outside

16, 16 'gap

17 Container height direction

18 ribbing

19 circumferential annular shaft

20 facing away from the front side

21 cylinder section

22 axial slot

23 'Befue hope

24 'contact section

25 'contact portion outer diameter

26 'outer diameter

27 'upper abutment surface

28 'lower abutment surface

29 'exit from base

Claims

Patent claims

1 . Drinking container unit (1) for holding a liquid,

with a drinking container (2) which, with respect to a container height direction (17), has an at least approximately rotationally symmetrical drinking opening (4) defined by a drinking circumferential edge (3), in particular in the dimension of the opening

Drinking glass, has, and

with a lid (5) that is prepared for this purpose, the drinking container (2) at the drinking opening

(4) via a screw connection formed by an external lid thread (7) and an internal container thread (8) in such a way that the lid (5) and the screw connection are exposed to excess pressure in the container

withstand atmospheric pressure,

characterized in that

an annular groove (9) formed by the lid (5) and opening in the container height direction, which is surrounded by an outer flank (10), a front ring (1 1) and a

Inner flank (12) is formed, the interior (6) sealingly rests against the drinking circulation edge (3).

2. Drinking container unit (1) according to claim 1,

characterized in that

the outer flank (10), the end ring (1 1) and the inner flank (12) each represent the outer surfaces of the lid by delimiting the lid (5) from the outside.

3. Drinking container unit (1) according to one of claims 1 or 2,

characterized in that

the outer flank (10) and the end ring (1 1) run transversely, preferably perpendicularly, to one another and are essentially rigidly fixed in their position relative to one another.

4. Drinking container unit (1) according to claim 3,

characterized in that

the outer flank (10) and the forehead ring (1 1) are structurally coordinated with one another in such a way that a bulging of the forehead ring (1 1) induced by the increased pressure in the longitudinal direction of the container causes a contact that counteracts the bulging between the outer flank (10) and an outside of the container (15).

5. Drinking container unit (1) according to one of the preceding claims,

characterized in that

the outer flank (10) and the outside of the container (15) run at least in sections without contact, forming a gap.

6. Drinking container unit (1) according to one of the preceding claims,

characterized in that

the screw connection between the external lid thread (7) and the internal container thread (8) is designed to be fluid-permeable, so that the increased pressure in an interior (6) of the drinking container (2) acts to a large extent or even completely on the forehead ring (1 1).

7. Drinking container unit (1) according to one of the preceding claims,

characterized in that

the screw connection faces the interior (6) of the drinking container (2) when viewed from the sealing contact between the annular groove (9) and the drinking circulation edge (3).

8. Drinking container unit (1) according to one of the preceding claims,

characterized in that

in the longitudinal direction of the container, the length of the inner flank (12) exceeds the length of the outer flank (10), so that the length ratio between the outer flank (10) and the inner flank (12) is preferably between 1:10 and 1:1, in particular around 1:3 , lies.

9. Drinking container unit (1) according to one of the preceding claims,

characterized in that

the inner flank (12) and the outer flank (10) are essentially parallel in the

Run in the longitudinal direction of the container and/or the end ring (1 1) in the

Container radial direction runs.

10. Drinking container unit (1) according to one of the preceding claims,

characterized in that

the cover (5) has a cylinder section (21) facing the interior (6) radially inside the annular groove (9), the end face (20) of which faces outwards and faces away from the interior (6) in the longitudinal direction of the container with respect to the axially outer edge of the end ring (1 1) is offset back, which cylinder section (21) is separated from the annular groove (9) by a circumferential annular shaft (19).

1 1 . Drinking container unit (1) according to claim 10,

characterized in that

in the container radial direction the annular shaft (19) exceeds the annular groove (9) by a factor greater than or equal to three.

12. Drinking container unit (1) according to one of the preceding claims,

characterized in that

A sealing element is arranged on the side of the annular groove (9) facing the interior (6), which is prepared to be in sealing contact with the drinking circulation edge (3).

13. Drinking container unit (1) according to one of the preceding claims,

characterized in that

the drinking container (2) has a filling neck (13) at its end facing away from the lid (5), which is closed with a closure cap (14), preferably in the manner of a crown cap, the lid (5) being separated from the lid by means of the screw connection Drinking circulation edge (3) is detachable so that it is coupled to the filling neck (13) and forms a base of the drinking container unit (1) which is now open at the drinking opening (4).