EP3236812A1

EP3236812A1 - Drinking vessel having a drinking valve

Info

Publication number: EP3236812A1
Application number: EP15820164.0A
Authority: EP
Inventors: Jürgen Löhn; Ralf Holschumacher; Eckhard Itzek
Original assignee: Mapa GmbH
Current assignee: Mapa Spontex Deutschland GmbH
Priority date: 2014-12-23
Filing date: 2015-12-23
Publication date: 2017-11-01
Anticipated expiration: 2035-12-23
Also published as: CN107257643B; WO2016102698A1; US20170354279A1; US10835065B2; CN107257643A; EP3236812B1; DE202014106275U1

Abstract

The invention relates to a drinking vessel comprising a drinking attachment (2) having a bottle wall (4) and a drinking element (25) which has a drinking opening above a passage channel (44) extending through the drinking element; a drinking valve arranged in the passage channel, wherein the drinking valve comprises a tube (27) which is open on the top and closed at the bottom and which has at least one flow-through opening (34) in a wall, which connects the inside of the tube to the outside of the tube, wherein the wall of the tube, at least in the area of the flow-through opening, is formed as a soft elastic diaphragm (32).

Description

Drinking container with a drinking valve

The invention relates to a drinking container comprising a drinking vessel and a drinking cap with a drinking valve. The drinking vessel may in particular be designed as a drinking bottle (feeding bottle, drinking cup or feeding bag) and the drinking cap as a drinking aid (for example a feeding spout or drinking spout) or as a drinking straw in accordance with European standard EN14350-1.

Drinking vessels have an interior and a vessel opening through which access to the interior is possible. Drinking attachments have a bottom wall, an annular flange surrounding the bottom wall for sealing attachment to the edge of the vessel opening by means of a fastening ring and a drinking element projecting outside from the bottom wall. The mounting ring is integrally connected to the annular flange or is a separate component which engages over the annular flange of the drinking cap to hold it at the edge of the vessel opening. The drinking element has at the outer end of a drinking opening, which is connected via a passage with the inside of the mouthpiece, so that liquid can flow out of the interior through the passageway.

In the drinking element a drinking valve is integrated, which opens when creating a negative pressure to the drinking opening. Furthermore, the bottom wall has a ventilation valve which opens when a negative pressure builds up in the drinking vessel. The valves should prevent leakage of the drinking container and allow the removal of liquid and a pressure equalization with the environment. The valves are often slit valves with injection-molded silicone bases in which slots are subsequently incorporated by means of knives or by tearing by means of special devices. The drinking element is preferably a mouthpiece or a drinking straw. Preferably, the mouthpiece, bottom wall, annular flange and possibly fastening ring are integrally formed from one or more plastics.

Known drinking vessels with drinking straw have in the bottom wall a tubular holder in which the drinking straw is inserted sealingly. An upper portion of the drinking straw protrudes above the top of the bottom wall and a lower portion protrudes from the bottom of the bottom wall into the drinking vessel. The lower section is fitted with a suction tube that projects down to near the bottom of the vessel. The drinking straw can be sealed, for example, by bending over and fixing the bent drinking straw by means of a lid clamped on the drinking attachment. The seal by kinking the drinking straw is uncertain and susceptible to wear. Slit valve drinking straws have a dividing wall blocking the passageway and slits are made by means of knives or by tearing. Furthermore, drinking straws are known with a check valve.

The preparation of the slit valves is expensive. Furthermore, the edges of the slots with little pressure on each other and there is a risk that they are not safe against spillage and open even at low pressure differences.

Because of the poor accessibility, the cleaning of the known drinking valves is difficult. Residual contaminants can stick to the drinking valves, make them difficult to open and lead to contamination of the drink.

Based on this, the present invention seeks to provide a drinking container, which has cheaper manufacturing properties, safely seals and opens and can be easily cleaned. The object is achieved by a drinking container with the features of claim 1. Advantageous embodiments of the drinking container are specified in subclaims.

The drinking container according to the invention comprises

• a drinking vessel with an interior,

A drinking cap having a bottom wall and an elongated drinking element protruding upward from the bottom wall and having at least one drinking opening at the outer end connected to the interior through a passageway extending through the drinking element;

Holding means for releasably holding the drinking attachment on the drinking vessel,

A drinking valve arranged in the passage, which closes at the drinking opening when ambient pressure is present and opens at the drinking opening when suction pressure is applied;

characterized in that

The drinking valve comprises a tube which is open at the top and closed at the bottom, which has at least one flow opening in a wall which connects the inside of the tube with the outside of the tube, the wall of the tube being in the region of the flow opening as a soft-elastic membrane, and

• the tube is sealingly abutting the wall of the through channel when the ambient pressure at the drinking port is in contact with the outer edge of the flow passage and the diaphragm bulges inwardly when a suction vacuum is applied to the mouth so that the outer edge of the flow port opens from the wall of the passageway away.

In the inventive drinking container, the outer edge of the flow opening is sealingly against the wall of the passage channel, when environment pressure on the drinking opening is present. As a result, the drinking valve obstructs the passage and prevents leakage of liquid from the interior. When a suction vacuum is applied to the drinking opening, the soft-elastic membrane bulges slightly inwards, so that the outer edge of the flow opening lifts off from the wall of the through-channel. As a result, liquid can flow out of the interior through the passageway, the drinking valve and the drinking opening. When no longer sucked at the drinking opening, the membrane returns to its original position, in which the outer edge of the flow opening sealingly abuts against the wall of the passage channel and the drinking valve prevents leakage of liquid. It is advantageous that the tube can be produced by injection molding in a single operation and the drinking valve can be mounted by simply inserting the tube in the passageway. Furthermore, the drinking valve is easy to disassemble and easy to clean in the disassembled state, so that no residues of drinks remain on the drinking valve. As a result, the drinking valve opens and closes reliably and contamination of the beverage is avoided. The complex separate generating the slots conventional slit valves, the costly installation of conventional check valves and the difficult and often unsatisfactory cleaning conventional drinking valves deleted.

Preferably, the outer edge of the passage opening is biased against the wall of the passageway. Preferably, for this purpose, the tube has an excess with respect to the through-channel.

According to one embodiment, the flow passage extends transversely through the side wall of the tube. In this embodiment, the outer edge of the flow opening is located on a wall surrounding the tube of the passage channel. Alternatively, the flow passage extends transversely through an end wall of the tube which closes the tube at the lower end. In this embodiment, the outer edge of the flow opening is located on a floor the passageway, the side offset to the outer edge of the flow opening has an outlet opening to the interior.

According to a further embodiment, the tube has a depression in the wall and the membrane is the bottom of the depression. In this way, a stable or rigid tube can be realized which is easily deformable in the region of the soft-elastic membrane. Due to its stability, the tube is easier to assemble and disassemble and protected from damage as a total soft elastic tube. Preferably, the recess is located in the outside of the wall of the tube. The formation of the membrane by a recess in the outside of the wall has manufacturing advantages. In principle, however, the membrane can also be produced by a depression on the inside of the wall of the tube. According to a preferred embodiment, the depression is arranged in the side wall of the tube. Preferably, the recess has the geometric shape of a segment of a cylinder shell.

According to another embodiment, the tube is formed overall as a soft elastic membrane.

For example, the membrane has a wall thickness in the range of 0.05 to 0.6 mm, preferably 0.2 to 0.4 mm, preferably 0.3 mm.

According to a further embodiment is from the outside of the membrane surrounding the flow opening sealing bead or other sealing element outwards, the pressure on the drinking opening abuts sealingly against the wall of the passage channel in the presence of environment. Due to the outwardly projecting sealing element, the outer edge of the flow opening with high pressure on the wall of the passage channel and an improved sealing effect is achieved. Further, the sealing member may be formed to protrude beyond the recess from the outside of the tube to abut a cylindrical wall to abut the passageway. Alternatively, the passageway may be provided with a sealing element projecting inwardly from its wall, which rests against the outer edge of the flow-through opening when normal pressure is applied to the drinking opening.

According to a further embodiment, from the outside of the membrane, a socket protrudes outwards, through which the flow opening extends, the base sealingly abuts the wall of the through-channel when the ambient pressure at the drinking opening with the outer edge of the flow opening and concerns a Saugunterdruckes at the drinking opening of the wall of the passage channel lifts. By the base a uniform contact of the outer edge of the through hole is favored on the wall of the through-channel.

According to a further embodiment, in addition, the sealing element projects from the outside of the base to the outside.

According to a further embodiment, the base is a solid, elongate element of rectangular cross-section aligned in the longitudinal direction of the tube. This design favors the sealing engagement of the outer edge of the flow opening on the wall of the passageway.

According to another embodiment, the tube has on the outside at least one Nachströmkanal extending from the membrane to the lower end of the tube. The Nachströmkanal favors the inflow of liquid from the interior to the flow opening while sucking on the drinking opening.

In principle, the tube can have a plurality of throughflow openings, which are arranged, for example, at different positions on the circumference of the tube are. For reasons of stability of the tube, it may be advantageous that it has only one flow opening on only one side, so that the membrane extends only over part of the circumference of the tube.

According to another embodiment, the tube is made in one piece from a soft elastic material. Preferably, the material of the tube is polyurethane, silicone or a thermoplastic elastomer. The tube is preferably produced by injection molding. Alternatively, for example, the tube is a combination of soft elastic and hard elastic materials. The tube can be produced, for example, in a two-component injection molding process, in which it is injection-molded in the region of the membrane of a flexible plastic material and, moreover, of a hard-elastic plastic.

According to a further embodiment, the drinking element is a drinking straw, which is connected at the lower end with the tube and the tube is clamped in a suction tube, which protrudes from the bottom of the bottom wall in the drinking vessel, wherein in concern of environment s pressure on the drinking opening of the outer Edge of the flow opening sealingly abuts against the wall of the suction tube and lifts at concern of Saugunterdruck at the drinking opening of the wall of the suction tube. In this embodiment, the drinking valve is formed in a drinking straw. The drinking straw is preferably formed integrally with the tube. Alternatively, the tube is inserted into the lower end of the drinking straw or attached to this. The suction tube is again attached to the tube, so that it forms together with this the drinking valve. The passageway extends through the straw, the tube and the suction tube. The suction tube forms the wall of the through-channel, against which the outer edge of the flow-through opening sealingly abuts.

According to a further embodiment, the tube has at a distance from its lower end an outwardly projecting edge, up to which the suction tube pushed onto the tube. The edge is a stop for the suction tube, which facilitates the installation of the drinking container.

According to a further embodiment, the tube above the membrane on the outside at least one circumferential sealing element, which bears sealingly against the wall of the suction tube. By the sealing element, the suction of air is particularly effectively prevented.

According to a further embodiment, the drinking straw is sealingly passed through the bottom wall of the drinking cap. According to a further embodiment, the drinking straw is sealingly held in a holder for drinking straws of the bottom wall. According to a further embodiment, the holder is a projecting from the inside (bottom) of the bottom wall tube with an upper opening to the outside (top) and a lower opening to the interior, in which the drinking straw is clamped.

According to a further embodiment, the drinking straw on the outside of a circumferential flange, which bears sealingly against a sealing surface on one side of the bottom wall. Preferably, the flange bears against a sealing surface on the inside of the bottom wall. As a result, a particularly good sealing of the drinking straw is achieved in the bottom wall.

According to a further embodiment, the flange is conical and sealingly abuts a conical sealing surface of the bottom wall, which has a through hole through which the drinking straw is passed.

According to a preferred embodiment, the flange is soft elastic and the sealing surface of the bottom wall has a ventilation hole extending from the outside to the inside of the bottom wall, wherein the flange sealingly abuts the sealing surface, when in the interior environment pressure prevails, and the Flange lifts off from the sealing surface if there is suction vacuum in the interior. As a result, a ventilation valve is realized.

According to another embodiment, the drinking straw is formed integrally with the drinking attachment. As a result, the assembly and disassembly is facilitated and achieved a particularly good sealing of the drinking straw in the bottom wall. The drinking container can be additionally provided with a ventilation valve.

The drinking straw is preferably made of a soft elastic material. Preferably, the drinking straw is made in one piece with the tube of a soft elastic material. The suction tube is preferably made of a soft elastic or hard elastic plastic.

According to another embodiment, the drinking element is a cylindrical or a mouthpiece tapering towards the outer end and the tube is arranged in a cavity of the mouthpiece, wherein the outer edge of the flow opening sealingly abuts a wall of the mouthpiece when ambient pressure is applied to the drinking opening, and the outer edge of the flow opening lifts off the wall of the mouthpiece when a suction vacuum is applied to the drinking opening. In this embodiment, the drinking valve is formed on a drinking container with a mouthpiece. The wall of the mouthpiece is the wall of the through-channel, against which the outer edge of the flow-through opening sealingly abuts.

According to a preferred embodiment, the mouthpiece inside a cylindrical holder, in which the tube is clamped. The holder defines the cavity in which the tube is arranged. The hollow cylindrical holder forms the wall of the mouthpiece for the sealing engagement of the outer edge of the pressure flow opening. According to a preferred embodiment, the holder protrudes downwards from the inside of the bottom wall. This facilitates the mounting and dismounting of the tube. According to a further embodiment, the tube has a valve flange at the lower edge, which rests against the lower edge of the holder, wherein the lower edge of the holder and / or the upper side of the valve flange has at least one inflow passage extending in the radial direction. The valve flange facilitates the assembly and disassembly of the tube. The tube can be gripped on the valve flange. The passage of liquid is ensured by the Nachströmkanäle. Furthermore, this embodiment prevents pressure peaks acting on the membrane when shaking the drinking container and the drinking valve opens unintentionally.

For this purpose, according to a further embodiment, the tube above the valve flange and below the flow opening on a circumferential collecting channel.

According to a further embodiment of a drinking container with a mouthpiece designed as a drinking element and a tube in a cavity of the mouthpiece, the tube in the outside of a wall on a second recess, the bottom of the second recess is a second membrane, the tube has at least on the outside a Nachströmkanal extending from the second recess to the lower end of the tube, and has the tube on the outside of a further Nachströmkanal, which connects the second recess with the recess. When the drinking container is held upside down, liquid flows through the inflow channel into the second depression, the bottom of which is the second membrane. When shaking the drinking container pressure peaks act on the second membrane and are absorbed by this, similar to a hydraulic damper. As a result, the pressure peaks do not pass through the further Nachströmkanal or only weakened to the membrane. Unintentional opening of the membrane and the outflow of liquid through the flow opening and out of the mouthpiece is thereby prevented. When sucking At the mouthpiece, the negative pressure is applied to the membrane and bulges it out into the cavity. This raises the edge of the flow opening of the wall of the mouthpiece and liquid can selectively escape from the mouthpiece.

According to a further embodiment, the second recess is arranged diametrically opposite the recess in the side wall of the tube. This is advantageous for the formation of the first membrane and the second membrane. Furthermore, this pressure peaks are advantageously prevented from the membrane.

According to a further embodiment, the tube at the lower end of a circumferential flange which sealingly abuts a sealing surface on the inside of the bottom wall, the bottom wall has a ventilation hole extending from the outside to the inside of the bottom wall, wherein the flange sealing rests against the sealing surface when ambient pressure prevails in the interior, and the flange lifts off from the sealing surface, if in the interior of a suction vacuum is applied. For this purpose, the flange is soft elastic. As a result, a ventilation valve is realized. Preferably, the flange is integrally formed with the tube. Preferably, the tube as a whole consists of soft elastic material. This design is structurally particularly simple. It facilitates the assembly and disassembly as well as the cleaning of the valves.

According to a further embodiment, the flange is conical and is sealingly against a conical sealing surface on the inside of the bottom wall, when there is pressure in the interior environment. This embodiment favors the achievement of a defined Abdichtposition when inserting the tube into the cavity of the mouthpiece.

According to a further embodiment, the sealing surface is arranged at the lower end of the holder. In this embodiment, the ventilation hole extends from lower end of the holder from in the axial direction through the wall of the holder and the bottom wall to the outside of the bottom wall.

According to a further embodiment of a drinking container with a mouthpiece formed as a drinking element and a tube in a cavity of the mouthpiece, the drinking cap on a second passageway extending from the outside of the bottom wall to the inside of the bottom wall, in which a vent valve is arranged, the when a suction negative pressure in the interior is open and closed when ambient pressure prevails in the interior, wherein the ventilation valve comprises a closed top and bottom open second tube having in a wall at least a second flow opening, which the inside of the second tube with the outside the second tube connects, wherein the wall of the second tube is formed as a soft elastic, third membrane at least in the region of the second flow opening, the second tube with the outer edge of the second D at ambient pressure on its inner side flow orifice sealingly abuts against a wall of the second passageway, and the third membrane buckles inwardly upon application of a suction negative pressure on the inside, so that the outer edge of the second flow passage from the wall of the second passageway. As a result, a ventilation valve is realized, which has a tube arranged in a passage in accordance with the drinking valve. It is advantageous that the second tube can be manufactured by injection molding in only one operation and can be mounted by simply inserting the second tube in the second passageway. Furthermore, the vent valve is easy to disassemble and easy to clean in the disassembled state, so that no beverage residues remain on the vent valve. As a result, the vent valve opens and closes reliably, and contamination of the beverage is avoided. The elaborate separate generation of slots of conventional slotted valves, the complicated assembly of conventional non-return valves and the difficult and often unsatisfactory cleaning conventional ventilation valves ent ent falls. Since the second tube is open at the bottom, pressure peaks in the interior of the drinking container cause the edge of the second flow opening to bear more firmly against the second wall of the through-channel and seal it even better. This additionally counteracts leakage of fluid through the ventilation valve when shaking the container.

According to a further embodiment, the third membrane is the bottom of a third depression in the outside of the wall of the second tube.

According to a further embodiment, the drinking cap on the inside a second hollow cylindrical holder in which the second tube is inserted, and the bottom wall on a vent hole which connects the outside of the bottom wall with the inside of the bottom wall inside the holder. The second hollow cylindrical holder defines the cavity in which the second tube is arranged. The second hollow cylindrical holder forms the wall of the second passageway for the sealing engagement of the outer edge of the second flow passage. According to a preferred embodiment, the second holder protrudes downwards from the inside of the bottom wall. This facilitates the mounting and dismounting of the second tube.

According to a further embodiment, the second tube has a second valve flange at the lower edge, which rests against the lower edge of the second holder. The valve flange facilitates the assembly and disassembly of the second tube. The second valve flange facilitates the gripping and mounting and dismounting of the second tube in the drinking cap.

According to a further embodiment, the second tube has on the outside at least a second Nachströmkanal extending from the third membrane to the upper end of the second tube. By the second Nachströmkanal air can flow better when the vent valve is open. According to another embodiment, the tube and / or the second tube is connected at the lower end with a grip tab. The grip tab facilitates the mounting and dismounting of the tube and / or second tube. According to a preferred embodiment, the grip tab is aligned in a vertical plane.

According to a further embodiment, the tube and the second tube are connected to each other by a bridge. According to another embodiment, they are provided with a common grip tab. This facilitates the assembly and disassembly of the first and second tubes in the drinking cap.

The invention will be explained in more detail with reference to the accompanying drawings of exemplary embodiments. In the drawings show:

Fig. 1 shows a conventional drinking container with a drinking straw in one

Vertical section;

2 a drinking straw of a drinking container according to the invention in a

Perspective view obliquely from the side;

Fig. 3, the same drinking straw in a longitudinal section;

4 shows a fiction, contemporary drinking container with drinking straw according to Figures 2 and 3 in a vertical section.

5 shows the lower end of another embodiment of the drinking straw in side view.

Fig. 6, the lower end of the same drinking straw inserted into a suction tube while sucking in a longitudinal section;

Fig. 7 is a one-piece formed with a bottom wall drinking straw in side view;

8 shows a drinking attachment of a drinking container with a mouthpiece in a perspective view from below; 9 shows a valve element for a drinking container with a mouthpiece in a perspective view from the side;

10 shows the drinking cap with the inserted valve element in the closed state in a vertical section;

FIG. 11 shows the drinking attachment with inserted valve element in the open state in a vertical section; FIG.

12 shows a further drinking attachment of a drinking container with a mouthpiece with inserted valve element in a perspective view obliquely from below and from the side;

Fig. 13 the same valve element in a perspective view obliquely from above and from the side;

FIG. 14 shows the same drinking attachment with inserted valve element with the drinking valve closed and the venting valve in a vertical section; FIG.

Fig. 15, the same drinking cap with inserted valve element with open

Drinking valve and venting valve in a vertical section;

FIG. 16 shows a further drinking attachment with drinking valve and separate ventilation valve in a front view; FIG.

17 shows the same drinking cap with valve elements in plan view;

FIG. 18 shows the same drinking attachment with valve elements in the closed state in a vertical section; FIG.

FIG. 19 shows the same drinking attachment with valve elements in the open state in a vertical section; FIG.

FIG. 20 shows the same drinking attachment with valve elements in a perspective view obliquely from below; FIG.

Fig. 21, the same drinking cap with removed valve elements in one

Perspective view diagonally from below.

The terms "top" and "bottom" as well as "horizontal" and "vertical" as well as derived information such as "top" and "bottom" refer to this message to an orientation of the drinking container, in which the vessel axis is aligned vertically, the drinking cap above and the drinking vessel is arranged below.

Further, in the following discussion of various embodiments, components having the same designation are given the same reference numerals.

Based on Fig. 1, the basic structure of the drinking container 1 will first be explained with reference to a conventional drinking container.

1, the drinking container 1, a drinking vessel 2 in the form of a drinking cup and a drinking cap 3 with a bottom wall 4 and an associated threaded ring. 5

The drinking vessel 2 has an elongate bottle body 6 with a bottle bottom 7 and a substantially sleeve-shaped bottle side wall 8. At the upper end of the bottle side wall 8, the drinking vessel 2 has a shoulder 9, from the inner circumference of a cylindrical vessel neck 10 (bottle neck) stands up. The bottleneck 10 surrounds a circular vessel opening 11.

The upper end surface of the bottle neck 10 forms an annular opening edge 12 which surrounds the vessel opening 11. The bottleneck 10 carries on the outer circumference of an external thread 13th

The drinking vessel 2 defines an interior space 14, which can be filled with a drink.

The threaded ring 5 of the Trinkauf rate has in a cylindrical shell portion 15, an internal thread 16. The upper edge of the shell portion 15 is connected to an inwardly projecting Schraubringflansch 17. From the inner edge of the threaded ring Flange 17 is a circumferential sealing profile 18 downward. The outside of the sealing profile 18 is conical. By screwing the drinking cap 3 on the drinking vessel 2, the conical outer surface can be pressed sealingly against the inner edge of the vessel opening 11.

The bottom wall 4 has a hollow cylindrical holder 19 for a drinking straw. In the example of the holder 19 projects from the bottom of the bottom wall 4 down. Approximately at the level of the top of the bottom wall 4, it has an upper opening 20 and at the lower end a lower opening 21. The holder 19 has at the lower end a downwardly tapered conical sealing surface 22. Above the sealing surface 22, the holder 19 has a inside circulating paragraph 23.

At least one ventilation hole extends axially through the sealing surface 22, wherein the upper end of the ventilation hole is opened into the cavity of the holder 19 and thus to the environment and the lower end of the ventilation hole to the interior 14.

In the example, on the top of the drinking cap 3, a cap 24 made of soft elastic material is attached, e.g. by snapping.

1, a conventional drinking straw 25 is held in the drinking cap 3, in the bottom of a conventional, open at the bottom suction pipe 26 is clamped. By drinking straw 25 and suction tube 26 through a passageway 44 extends. The passageway 44 can be locked by bending the straw 25.

The fiction, contemporary drinking container 1 differs from the conventional by the execution of the drinking straw 25 and the suction tube 26. A drinking straw 25 of a fiction, contemporary drinking container 1 will be explained with reference to FIGS. 2 and 3. The drinking straw 25 is smooth at the top and integrally formed at the bottom with a tube 27, which forms a valve element. The lower end of the tube is closed by an end wall 28. At the upper end of the drinking straw 25 has a drinking opening 29th

The tube 27 has in the outer side of its side wall 30 a recess 31 which has the geometric shape of a segment of a cylindrical shell. In the region of the recess 31, the wall thickness of the side wall 30 is so small that the bottom of the recess 31 forms a soft-elastic, deformable membrane 32. In the example, the wall thickness of the side wall 30 in the region of the depression is 0.3 mm and outside the depression 1.3 mm.

The drinking straw 25 and the tube 27 are made in one piece from a flexible plastic, e.g. made of polyurethane, silicone or a thermoplastic elastomer.

From the outside of the membrane 32, a socket 33 protrudes outwards. The pedestal 33 is a solid, elongated element of rectangular cross-section aligned in the longitudinal direction of the tube 27. Its shape is similar to that of a feather key.

A flow passage 34 extends transversely through the membrane 32 and the pedestal 33. The flow opening 34 is opened on the outside of the base 33 and on the inside of the side wall 30. The outer edge of the flow opening 34 is located on a sealing element 35 protruding annularly from the outside of the base 33. The height of the base 33 and the sealing element 35 exceeds the depth of the recess 31, so that the sealing element 35 with respect to the jacket of the tube 27 on both sides of the recess 31 protrudes outward. At a distance from its lower end, the tube 27 has an outwardly projecting edge 36. Between edge 36 and membrane 32, the tube 27 has on the outside a plurality of peripheral sealing elements 37.

Above the edge 36, the tube 27 has a flange 38, which has the shape of a hollow truncated cone and widens upwards. Above the flange 38, a peripheral upper edge 39 is arranged on the outside of the drinking straw 25. In the example, it is formed at the lower end of a downwardly widening cone section 40.

On the outside of the tube 27, an axially directed Nachströmkanal 41 is present, which connects the bottom of the recess 31 with the lower end of the tube 27.

The drinking straw 25 is inserted from below into the holder 19 and pulled with the cone portion 40 through the holder 19 until the flange 38 sealingly abuts the sealing surface 22 and the upper edge 39 engages over the shoulder 23 in the holder 19.

Further, a suction tube 26 is clamped from below onto the tube 27 until it rests against the edge 36.

FIG. 4 shows the drinking container according to the invention with drinking straw 25 and suction tube 26 according to FIGS. 2 and 3.

Fig. 5 shows another embodiment of the drinking straw 25, in which the tube 27 is provided on diametrically opposite sides each with a membrane 32, a base 33 and a flow opening 34. The sliding of the suction tube on the tube 27, to the edge 36 is shown in Fig. 6 for the embodiment of the drinking straw 25 of Figure 5.

When ambient pressure is applied to the drinking opening 29 at the top of the drinking straw 25, the base or sockets 37 are pressed sealingly against the wall of the suction tube with the outer edge of the flow opening 34. Then no liquid can leak from the interior.

According to FIG. 6, a suction vacuum is applied to the drinking opening 29. As a result, the membranes 37 bulge inward and lift the base 33 with the outer edge of the flow openings 34 from the wall of the suction tube 26 from. In this state, liquid can be removed from the inner space 14 through the drinking straw 25. Here, the Nachströmkanal 41 facilitates the flow of liquid from the suction pipe 26 to the flow opening 34th

The embodiment of Fig. 7 differs from the above-described in that the drinking straw 25 and the tube 27 are integrally formed with the bottom wall 4 of the drinking cap 3. In this embodiment, the bottom wall 4 by means of an additional screw ring on the upper edge of the drinking vessel 2 festschraubbar.

According to FIG. 8, a drinking attachment 3 has a mouthpiece 42 on the outside of the bottom wall 4. Inside, the mouthpiece 42 is bounded by a hollow cylindrical holder 43, which projects from the bottom of the bottom wall 4 downwards. Externally, the drinking cap 3 has a cylindrical casing part 5, which is provided with an internal thread 13.

At the upper end, the mouthpiece 42 at least one drinking opening 29 which is connected to the cavity in the holder 43, which forms the passage 44. According to FIG. 9, a valve element has a tube 27 which is open at the top and closed at the bottom. In a side wall 30, a soft-elastic membrane 32 is formed in the region of a depression 31. From the outside of the membrane 32 projects on a base 33, an annular sealing element 35 to the outside. A flow opening 34 extends through the sealing member 35 and across the membrane 32 therethrough. The flow opening 34 is open to the outside and to the inside of the tube 27.

At the lower end of the tube 27 is connected to a radially outwardly projecting, circumferential valve flange 45. The valve flange 45 is substantially circular disk-shaped. On the top it has radially extended Nachströmkanäle 41. Further runs at the lower end of the tube 27 adjacent to the valve flange 45, a collecting duct 46 on the outside of the tube.

The tube 27 can be clamped from below into the holder 43 of the drinking attachment 3 until the valve flange 45 bears against the lower edge of the holder 43. The outer edge 35 of the flow opening 34 is then sealingly against the inside of the holder 43. Liquid in a drinking vessel 2, to which the drinking cap 3 is screwed, can then not escape through the mouthpiece 42. This situation is shown in FIG. When sucking on the mouthpiece 42, the membrane 32 bulges inwardly as a result of the internal pressure in the mouthpiece 42, so that the outer edge 35 of the flow opening 34 is released from the wall of the holder 43. As a result, liquid can flow out through the backflow passages 41, the flow passage 34, the tube 27, and the mouth 29 of the mouthpiece 42. This situation is shown in FIG. When it is no longer sucked on the mouthpiece 42, the outer edge 35 of the flow-through opening 34 re-seals against the holder 43.

The embodiment of Figs. 12 to 15 differs from the embodiment of Figs. 9 to 11 in that the tube 27 on the outside of its side wall 30 has a second recess 47, the bottom of a second Membrane 48 is. The second recess 47 is arranged diametrically opposite the recess 31 in the side wall 30. The tube 27 has on the outside an axially extending Nachströmkanal 41, which extends from the second recess 47 to the lower end of the tube 27. The tube 27 has a further Nachströmkanal 49 which connects the second recess 47 in the circumferential direction with the recess 31.

Another difference is that the tube 27 has a peripheral flange 38 at the lower end. The flange 37 has the shape of a hollow truncated cone and widens from bottom to top. The flange 38 is preferably formed integrally with the tube 27 of soft elastic material. Its wall thickness is so low that it is easily deformable.

The flange 38 bears against a sealing surface 22 at the lower end of the hollow cylindrical holder 43. A vent hole 50 extending axially through the wall of the holder 43 and the bottom wall 4 connects the sealing surface 22 to the outside of the bottom wall 4. The sealing surface 22 is conical.

Finally, an approximately circular disc-shaped grip tab 51 is connected via a web 52 with the lower end of the tube 27. The grip tab 51 is arranged in a vertical plane.

The tube 27 is preferably made with the grip tab 51 in one piece of soft elastic material.

Fig. 14 shows a situation in which is not sucked on the mouthpiece 42 and no negative pressure in the interior 14 of the drinking vessel 2 prevails. In this situation, the outer edge of the flow opening 34 of the tube 27 sealingly abuts against the wall of the holder 43. Liquid can not flow out of the interior 14 through the mouthpiece 42. Further, the flange 38 is sealingly against the sealing surface 22, so that no air can flow through the vent hole 50 in the interior 14.

FIG. 15 shows a situation in which a suction negative pressure is applied to the mouthpiece 42 and the suction negative pressure prevails in the interior 14 of the drinking vessel. As a result of the suction vacuum, the membrane 32 is deflected inwardly and the outer edge of the flow opening 34 is released from the wall of the holder 43. As a result, liquid can flow out through the inflow channel 48, the second recess 47, the further inflow channel 49, the recess 31, the flow opening 34, the tube 27 and the mouthpiece 42. As a result of the negative pressure, the umbrella-like flange 38 (ventilation screen) lifts off the sealing surface 2 and air can flow in through the ventilation hole 50 from the outside into the interior 14.

Pressure peaks due to liquid entering the second recess 47 by shaking are damped by the second diaphragm 48, so that they do not unintentionally open the drinking valve.

The embodiment of Figs. 16 to 21 differs from the embodiment of Figs. 8 to 11 in that in addition to the drinking valve, a separate venting valve is present. For this purpose, the drinking attachment 3 has a second through-passage 53, which extends from the outside of the bottom wall 4 to the inside of the bottom wall 4. The vent valve is disposed in the second passage 53.

The vent valve has a top closed and bottom open second tube 54 having in a side wall 55 at least a second flow opening 56 which connects the inside of the second tube 54 with the outside of the second tube 54. The side wall 55 of the second tube 54 is in the region of the second flow opening 56 as a soft elastic, third membrane 57 trained. The third diaphragm 57 is the bottom of a third recess 58 in the outside of the side wall 55.

The second tube 54 has on the outside a second Nachströmkanal 59 which extends from the third membrane 57 to the upper end of the second tube 54.

The drinking cap 3 has inside a second hollow cylindrical holder 60, in which the second tube 54 is inserted. The bottom wall 4 has a vent hole 61 that connects the outside of the bottom wall with the inside of the bottom wall within the second holder 60.

The second tube 54 has at the lower edge a second valve flange 62, which bears against the lower edge of the second holder 60.

The two valve elements or tubes 27, 54 may have the same diameter. Furthermore, they can have different diameters to avoid confusion. Also, both valve elements may be connected to each other via a bridge or via a common gripping tab.

FIG. 18 shows a situation in which normal pressure prevails in the mouthpiece 42 and in the interior 14. As a result, the outer edge of the flow opening 34 of the drinking valve and the outer edge of the second flow opening 56 on the outside of a second base 63 of the vent valve sealingly against the wall of the holder 43 and second holder 60 at. It can neither escape liquid, nor add air.

FIG. 19 shows a situation in which a suction vacuum is applied to the mouthpiece 42 and prevails in the interior 14. As a result, the membrane 32 is deflected and the flow opening 34 of the drinking valve released, so that liquid through the Mouthpiece 42 can flow out. Due to the internal pressure in the inner space 14, the third diaphragm 57 is deflected inwards and the second flow opening is released, so that air can flow through the ventilation hole 61, the second flow-through channel 59, the second flow opening 56 and the second tube 54 into the inner space 14 To effect pressure equalization.

Claims

Claims:

1. Drinking container comprising

A drinking vessel (2) having an interior space (14),

A drinking attachment (3) having a bottom wall (4) and a drinking element (25, 42) which projects upwards from the bottom wall (4) and at the outer end has at least one drinking opening (29) which extends over one through the drinking element ( 25, 42) extending through passageway (44) is connected to the interior space (14),

Holding means (15, 16) for detachably holding the drinking attachment (3) on the drinking vessel (2),

• a in the passage (44) arranged drinking valve, the s pressure at the drinking opening (29) closes when it concerns the environment and opens at the drinking opening (29) when a Saugunterdruckes

characterized in that

The drinking valve comprises a tube (27) open at the top and closed at the bottom, which has in a wall at least one flow opening (34) connecting the inside of the tube (27) to the outside of the tube (27) of the tube (27) is formed at least in the region of the flow opening as a soft elastic membrane (32), and

The tube (27) sealingly abuts the wall of the through-channel (44) when the ambient pressure at the drinking opening (29) engages with the outer edge (35) of the flow opening (34) and the membrane (32) contacts when suction vacuum is applied the drinking opening (29) bulges inwardly so that the outer edge (35) of the flow opening (34) moves away from the wall of the passageway (44).

2. Drinking container according to claim 1, wherein the flow opening (34) extends transversely through the side wall (30) of the tube (27) therethrough.

3. Drinking container according to claim 1 or 2, wherein the tube (27) in the outer side of a wall (30) has a recess (31) and the membrane (32) is the bottom of the recess (31).

4. Drinking container according to claim 3, wherein the recess (31) in the side wall (30) of the tube (27) is arranged.

5. Drinking container according to one of claims 1 to 4, in which from the outside of the membrane (32) around the flow opening (34) circumferential sealing element (35) protrudes outwardly, the s pressure on the drinking opening (29) when surrounding concerns on the wall of the passageway (44) rests.

6. Drinking container according to one of claims 1 to 5, wherein from the outside of the membrane (32) a socket (33) projects outwardly through which the flow opening (34) extends therethrough, wherein the base (33) in abutment of Surrounding pressure at the drinking opening (29) with the outer edge (35) of the flow opening (34) sealingly against the wall of the passage channel (44) and abuts when a Saugunterdruckes at the drinking opening (29) from the wall of the passage channel (44) ,

7. Drinking container according to claim 5 and 6, wherein the sealing element (25) from the outside of the base (33) protrudes.

8. Drinking container according to claim 6 or 7, wherein the base (33) is a longitudinal direction of the tube (27) aligned, solid, elongated element with a rectangular cross-section.

9. Drinking container according to one of claims 1 to 8, wherein the tube (27) on the outside at least one Nachströmkanal (41) which extends from the membrane (32) to the lower end of the tube (27).

10. Drinking container according to one of claims 1 to 9, wherein the tube (27) is made in one piece from a soft elastic material.

11. Drinking container according to one of claims 1 to 10, wherein the drinking element is a drinking straw (25) which is connected at the lower end to the tube (27) and the tube (27) is clamped in a suction tube (26), the protrudes from the bottom of the bottom wall (4) in the drinking vessel (14), wherein upon application of ambient pressure at the drinking opening (29) of the outer edge (35) of the flow opening (34) sealingly abuts the wall of the suction tube (26) and at Concerns suction vacuum on the drinking opening (29) from the wall of the suction tube (26) lifts.

12. Drinking container according to claim 11, wherein the tube (27) is integrally connected to the drinking straw (25).

13. Drinking container according to claim 11 or 12, wherein the tube (27) at a distance from its lower end an outwardly projecting edge (36), to which the suction tube (26) is pushed onto the tube (27).

14. Drinking container according to one of claims 1 to 13, wherein the tube (27) above the membrane (32) on the outside at least one circumferential sealing element (35) sealingly abuts the wall of the suction tube (26).

15. Drinking container according to one of claims 1 to 14, wherein the drinking straw (25) sealingly through the bottom wall (4) of the drinking cap (3) is passed.

16. Drinking container according to claim 15, wherein the drinking straw (25) on the outside has a peripheral flange (38) sealingly abuts a sealing surface on one side of the bottom wall (4).

17. Drinking container according to claim 16, wherein the flange (38) is conical and sealingly abuts a conical sealing surface of the bottom wall (4) having a through hole through which the drinking straw (25) is passed.

18. Drinking vessel according to claim 16 or 17, wherein the flange (38) is soft elastic and the sealing surface of the bottom wall (4) has a ventilation hole extending from the outside to the inside of the bottom wall (4), wherein the flange (38 ) sealingly abuts the sealing surface when in the interior (14) ambient pressure prevails and the flange (38) lifts off from the sealing surface when in the interior (14) bears a suction vacuum.

19. Drinking container according to one of claims 1 to 18, wherein the drinking straw (25) is formed integrally with the drinking cap (4).

20. Drinking container according to one of claims 1 to 10, wherein the drinking element is a cylindrical or tapering towards the outer end mouthpiece (42) and the tube (27) in a cavity of the mouthpiece (42) is arranged, wherein the outer Edge (35) of the flow opening (34) sealingly abuts a wall (43) of the mouthpiece (42) when ambient pressure is applied to the drinking opening (29), and the outer edge (35) of the flow opening (34) from the wall (43 ) of the mouthpiece (42) lifts when a suction vacuum is applied to the drinking opening (29).

Drinking container according to claim 20, wherein the mouthpiece (42) inside a cylindrical holder (43), in which the tube (27) is inserted.

22. Drinking container according to claim 21, wherein the tube (27) at the bottom of a valve flange (45) which bears against the lower edge of the holder (43), wherein the lower edge of the holder (43) and / or the top of the Valve flange (45) have one or more radially extending Nachströmkanäle (41).

23. Drinking container according to claim 22, wherein the tube (27) above the valve flange (45) and below the flow opening (34) has a circumferential collecting channel (46).

24. Drinking container according to one of claims 20 to 23, wherein the tube (27) in the outside of a wall (30) has a second recess (47), the bottom of the second recess (47) is a second membrane (48), the tube (27) has at least one outflow channel (41) on the outside, which extends from the second depression (47) to the lower end of the tube (27), and the tube (27) has a further downstream passage (49) on the outside ), which connects the second recess (47) with the recess (31).

25. Drinking container according to claim 24, wherein the second recess (47) diametrically opposite the recess (31) in the side wall (30) of the tube (27) is arranged.

26. Drinking container according to one of claims 20 to 25, wherein the tube (27) at the lower end a circumferential flange (38) sealingly against a sealing surface (22) on the inside of the bottom wall (4), the bottom wall ( 4) has a ventilation hole (50) which extends from the outside to the inside of the bottom wall (4), the flange (38) sealingly abutting the sealing surface (22) when in the interior (14) ambient pressure prevails, and the flange (38) from the sealing surface (22) lifts off when in the interior (14) is applied a suction vacuum.

27. Drinking vessel according to claim 26, wherein the flange (38) is conical and sealingly abuts a conical sealing surface (22) on the inside of the bottom wall (4).

28. Drinking vessel according to claim 26 or 27, wherein the sealing surface (22) at the lower end of the holder (43) is arranged.

29. Drinking container according to one of claims 20 to 28, wherein the drinking attachment (3) has a second passage (53) extending from the outside of the bottom wall (4) to the inside of the bottom wall (4), in which a vent valve is arranged, which in case of application of a Saugunterdruckes in the interior (14) opens and is closed when ambient pressure in the interior (14) prevails, the vent valve comprises a closed top and bottom open second tube (54) in a wall (55) at least one second flow opening (56) which connects the inside of the second tube (54) with the outside of the second tube (54), wherein the wall (55) of the second tube (54) at least in the region of the second flow opening (56) is formed as a soft elastic, third membrane (57), and the second tube (54) in the presence of ambient pressure on its inner side with the outer edge of the second flow opening (56 ) sealingly abuts a wall of the second passageway (53), and the third diaphragm (57) buckles inwardly upon application of a suction vacuum on the inside so that the outer edge of the second flow passage (56) extends from the wall of the second passageway (53) removed.

30. Drinking container according to claim 29, wherein the third membrane (57) is the bottom of a third recess (58) in the outside of the wall (55) of the second tube (54).

31. Drinking container according to claim 29 or 30, wherein the Trinkauf set (3) inside a second hollow cylindrical holder (60), in which the second tube (54) is inserted, and the bottom wall (4) has a ventilation hole (61) connecting the outside of the bottom wall (4) to the inside of the bottom wall inside the holder (60).

32. Drinking container according to one of claims 29 to 31, wherein the second tube (54) at the bottom has a second valve flange (62) which bears against the lower edge of the second holder (60).

33. Drinking container according to one of claims 29 to 32, wherein the second tube (54) on the outside at least a second Nachströmkanal (59) extending from the third membrane (57) to the upper end of the second tube (54) extends.

34. Drinking container according to one of claims 22 to 33, wherein the tube (27) and / or in which the second tube (54) is connected at the lower end with a grip tab.