EP3366167B1 - Lip activated closure for a drinking vessel - Google Patents

Description

The invention relates to a lip-operated closure for a drinking bottle, a drinking cup or another drinking container.

Drink containers with a lip-operated closure allow for spill-free storage of hot or cold drinks. The closure is opened by selectively actuating the closure using the lips, so that liquid can flow from the drinking container into the mouth opening between the lips. If the closure is not actuated, it is closed and prevents the liquid from escaping from the drinking container.

The EP 1 123 027 B1 describes a lip-operated closure for a drinking container, which has a base body with an upwardly widening, conical first wall for attaching the lower lip, a shoulder running around the inner circumference with a valve seat on the underside and, further down, an internal thread that extends to the lower end for screwing on has an external thread of the drinking container. A closure body is arranged in the base body, which has an upwardly widening conical second wall for attachment of the upper lip and at the lower end of the conical section a middle plate made of a flexible elastomer with a flange on the outer edge. The flange is stiffened by a stiffening element and held on a carrier in the form of a spoked wheel, which in turn is held on the drinking container or on the base body, so that the flange seals against the valve seat. By pressing together the lips resting against the conical walls, the center plate and flange are deformed and the sealing contact of the second sealing surface against the first sealing surface is partially broken, so that liquid can escape through free spaces between the spokes of the carrier and through a gap between the closure body and the base body. Disadvantages are the complex construction with a carrier for the closure body, the effort for assembly, disassembly and Cleaning and possible leakage especially due to repeated elastic deformation of center plate and flange.

The EP 2 138 075 A1 describes a drinking container with a lip-operated closure in which a support in the form of a spoked wheel is screwed into the top of the container. The spokes of the spoked wheel are designed as leaf springs with a loop extending downwards, so that a central hole of the spoked wheel can be tilted with respect to the drinking container and, after relief, returns to the starting position due to the spring action of the leaf springs. A plate-shaped actuator is inserted into the central hole of the bracket with a lug projecting centrally from the underside. Below the carrier, a plate-shaped sealing element is held on the attachment by means of a flexible retaining ring. The sealing element seals with its outer edge against a sealing seat on the lower edge of the outer ring of the carrier screwed into the container. When the actuating element pivots the sealing element as a result of lip actuation, liquid can flow out through a gap opened thereby between the sealing element and the outer ring of the carrier, free spaces between the spokes of the carrier and a gap between a housing ring fixed at the top of the container and the actuating element. In the case of this lip-actuated closure, too, the complex construction made up of carrier, actuating element, sealing element, securing ring and housing ring and the assembly, disassembly and cleaning effort associated therewith are disadvantageous.

Furthermore disclosed FR3025411 a children's cup with a liquid container having a closable opening.

Proceeding from this, the invention is based on the object of creating a more user-friendly and securely sealing, lip-actuated closure for a drinking container.

The object is achieved by a lip-operated closure for a drinking container with the features of claim 1. Advantageous configurations of the closure are specified in the dependent claims.

The object is achieved by a combination of a lip-operated closure and a drinking container with the features of claim 1. Advantageous configurations of the closure are specified in the dependent claims.

• einen rohrförmigen Grundkörper mit einer Eintrittsöffnung für Flüssigkeit am unteren Ende und einer Austrittsöffnung für Flüssigkeit am oberen Ende,
• einen zwischen dem unteren Ende und dem oberen Ende von der Innenseite des Grundkörpers radial nach innen vorstehenden, über den Innenumfang des Grundkörpers umlaufenden Vorsprung mit einer Sitzfläche an der Oberseite und einer ersten Dichtfläche an der Unterseite,
• einen rohrförmigen Verschlusskörper, der
• in einem Abstand vom oberen Ende eine seinen Querschnitt versperrende Verschlusswand,
• eine am unteren Ende radial nach außen vorstehende, umlaufende Ringscheibe mit einer zweiten Dichtfläche an der Oberseite und
• mindestens ein zwischen seinem oberen Ende und der Ringscheibe nach außen vorstehendes Federelement aufweist, das sich an verschiedenen Stellen in Umfangsrichtung unter Vorspannung an der Sitzfläche abstützt, sodass die zweite Dichtfläche abdichtend an der ersten Dichtfläche anliegt,
• mehrere in Umfangsrichtung voneinander beabstandete, radial erstreckte Durchgangskanäle zwischen dem Federelement und der Sitzfläche,
• einen in Axialrichtung vom unteren Ende bis zu den inneren Enden der radial erstreckte Durchgangskanäle erstreckten ersten Ringspalt zwischen dem Grundkörper und dem Verschlusskörper und
• einen in Axialrichtung von den äußeren Enden der radial erstreckten Durchgangskanäle bis zum oberen Ende des Grundkörpers erstreckten zweiten Ringspalt zwischen dem Grundkörper und dem Verschlusskörper.

The lip-operated closure for a drinking container according to the invention comprises:

• a tubular body with an inlet opening for liquid at the lower end and an outlet opening for liquid at the upper end,
• a projection that protrudes radially inward from the inside of the base body between the lower end and the upper end and runs around the inner circumference of the base body, with a seat surface on the upper side and a first sealing surface on the underside,
• a tubular closure body, the
• at a distance from the upper end, a closure wall blocking its cross-section,
• a lower end radially outwardly projecting, circumferential annular disc with a second sealing surface on the top and
• has at least one spring element projecting outwards between its upper end and the annular disk, which spring element is supported at various points in the circumferential direction under prestress on the seat surface, so that the second sealing surface bears sealingly against the first sealing surface,
• a plurality of circumferentially spaced, radially extending through-channels between the spring element and the seat surface,
• a first annular gap between the base body and the closure body, extending in the axial direction from the lower end to the inner ends of the radially extending through-channels, and
• a second annular gap between the base body and the closure body, extending in the axial direction from the outer ends of the radially extending through-channels to the upper end of the base body.

In the case of the closure according to the invention, the lower lip is attached to the upper end of the base body and the upper lip to the upper end of the closure body and pressing together of the upper lip and lower lip of the closure body tiltable against the action of the spring element with respect to the base body. As a result, the second sealing surface is partially lifted off the first sealing surface and a gap becomes free between the first and second sealing surfaces. As a result, liquid can escape through the liquid inlet of the base body, the opening between the first and second sealing surface, the first annular gap, the through-channels and the second annular gap between the base body and the closure body. The closure can be realized using fewer components with a simple shape. In particular, it is possible to produce the closure body including the at least one spring element in one piece. A support for the closure body can be dispensed with, since it can be held on the projection by the spring element and annular disk. This also simplifies the manufacture, assembly and disassembly and cleaning of the closure. If the lips are not actuated, the spring element presses the second sealing surface evenly and reliably against the first sealing surface in a sealing manner. In order to break the seal, the entire ring disk can be tilted, in which case it is not deformed and only the spring element is deformed. As a result, the seal is not compromised by repeated opening and deformation of the sealing disc.

According to a preferred embodiment, the projection running around the inner circumference of the base body is in the form of a circular ring. This facilitates assembly and disassembly as well as cleaning of the closure.

According to the invention, a first sealing lip running around in the circumferential direction projects downwards from the first sealing surface for sealing on the inside of the mouth of a drinking container. This achieves a particularly reliable sealing of the closure on the drinking container.

According to a further embodiment, the base body below the projection has at least one screw thread, element of a bayonet lock, Element of a locking connection or a cylindrical surface for welding or gluing with a drinking container. The closure can be connected to a drinking container which has a structure complementary to the aforementioned structures, ie at least one complementary screw thread, element of a bayonet closure, element of a snap-in connection or cylindrical surface for welding or gluing to the closure. According to another embodiment, the base body is designed in one piece with a drinking container, so that the base body forms an upper section of the drinking container.

According to a further embodiment, the base body has, above the projection, a first conical wall which is widened towards the upper end. The first conical wall is advantageous for the application of the lips to operate the closure. According to a further embodiment, the base body has a first cylindrical wall extending from the lower end. This is advantageous for attachment to the drinking container.

According to a further embodiment, the through-channels have a plurality of radially extending grooves in the seating surface of the projection which are spaced apart from one another in the circumferential direction. This favors liquid removal by applying the lips to freely selectable positions on the circumference of the closure. According to a further embodiment, in continuation of the radially extending grooves, there are axially extending grooves along the inner edge of the projection. The axially extending grooves facilitate the passage of liquid between the inner edge of the projection and the valve body.

According to a further embodiment, the closure body is closed at the lower end by a circular disc which has the second sealing surface on an edge section protruding radially outwards from the closure body. This stabilizes the washer and improves the seal.

According to a further embodiment, at least one second sealing lip running around in the circumferential direction projects upwards from the second sealing surface. The second sealing lip lies against the first sealing surface in a sealing manner. This further improves the sealing of the closure.

According to a further embodiment, the spring element is connected to the closure body in the manner of bellows at an upper end and sits on the seat surface at a lower end. This achieves a particularly uniform resilient support of the closure body on the projection in the circumferential direction. This embodiment is advantageous for the manufacture, assembly and disassembly and cleaning of the closure. The bellows-like spring element is tubular, with the wall in longitudinal section having a zigzag or wave-like course with at least one reversal of direction, preferably in a fold. As a result, the spring element can deflect and rebound over long spring travels under the action of little force.

In the case of a bellows-like design of the spring element, the passage channels are advantageously formed by radially extending grooves in the seating surface of the projection which are spaced apart from one another in the circumferential direction.

According to another embodiment, several spring elements are present, which are arranged at different positions in the circumferential direction of the closure body. For example, each spring element has a bending spring that is inclined at an acute angle to the seat surface, which rests on the seat surface at one end and is connected to the closure body at the other end. According to a further embodiment, each spring element has two or more spiral springs which are arranged in a zigzag shape and are each connected to one another at one end, with the lowermost spiral spring being supported on the seat surface at its lower end and the uppermost spiral spring being connected to the closure body at its upper end is. In an embodiment with a plurality of spring elements spaced apart from one another according to a further embodiment, the passage channels are arranged between the spring elements which are spaced apart from one another.

According to a further embodiment, the closure body has a second cylindrical wall at the bottom, which is connected to the annular disk at the lower end and is connected at the top to a second conical wall which widens towards the upper end and is connected to the at least one spring element on the outside. This embodiment is easy to assemble and disassemble. Furthermore, the second conical wall facilitates the actuation of the closure by means of the lips. This embodiment is particularly advantageous in combination with a first conical wall at the upper end of the base body.

According to another embodiment, the second conical wall has a lower second conical wall section with a large cone angle at the bottom and an upper second conical wall section with a small cone angle adjacent thereto. The small cone angle is smaller than the large cone angle. This design is advantageous for assembly and disassembly and for operating the shutter using the lips.

According to a further embodiment, the cone angle of the upper second conical wall section matches the cone angle of the first conical wall of the base body or deviates from it by a maximum of ±20%, preferably by a maximum of ±10%. This is advantageous for lip operation.

According to a further embodiment, the spring element is connected to the closure body in the connection area of the lower second conical wall section and the upper second conical wall section. This is advantageous for the uniform support and tiltability of the closure body at different circumferential positions of the closure.

According to a further embodiment, the spring element has at the lower edge a bead which extends in the circumferential direction and sits on the seat surface. The bead makes it easier for the spring element to slide over the seat surface when the closure body is tilted. This makes it easier to open the closure and avoids damage.

According to a further embodiment, the base body is made of a rigid material. According to a further embodiment, the base body is injection molded. According to another embodiment, the closure body is made of an elastomeric material. According to a preferred embodiment, the closure body is made of silicone, a thermoplastic elastomer, latex or another elastomer. According to a further embodiment, the closure body, including the at least one spring element, is produced in one piece from an elastomeric material. According to a further embodiment, the closure body is injection molded.

In this application, the terms "top" and "bottom" and terms derived therefrom such as "above" and "below" refer to an orientation of the closure in which the tubular body or closure body is oriented vertically and with its upper end above the lower end is arranged. The term "horizontal" refers to the vertical orientation of the body or closure body. "Radial" and "circumferentially" refer to directions in the radial direction relative to the tubular base body or closure body and in the circumferential direction relative to the tubular base body or closure body. "Inside" and "outside" refer to elements arranged further inwards and outwards in the radial direction with respect to one another.

Fig. 1a-f

lippenbetätigbarer Verschluss an einem Trinkbehälter in einer Perspektivansicht von oben (Fig. 1a), in einer Ansicht von der linken Seite (Fig. 1b), in einer Ansicht von der rechten Seite (Fig. 1c), in einer Draufsicht (Fig. 1d), in einer Unteransicht (Fig. 1e) und in einem perspektivischen Sprengbild schräg von oben (Fig. 1f);

Fig. 2a-d

den Verschluss in einer Perspektivansicht von oben (Fig. 2a), in einer Seitenansicht (Fig. 2b), in einem Schnitt entlang der Linie c-c von Fig. 2b (Fig. 2c) und in der Draufsicht (Fig. 2d);

Fig. 3a-e

den Grundkörper des Verschlusses in einer Perspektivansicht von oben (Fig. 3a), in einer Ansicht von der linken Seite (Fig. 3b), in einer Ansicht von der rechten Seite (Fig. 3c), in einer Draufsicht (Fig. 3d) und in einer Unteransicht (Fig. 3e);

Fig. 4a-e

den Verschlusskörper des Verschlusses in einer Perspektivansicht von oben (Fig. 4a), in einer Ansicht von der linken Seite (Fig. 4b), in einer Ansicht von der rechten Seite (Fig. 4c), in einer Draufsicht (Fig. 4d) und in einer Unteransicht (Fig. 4e);

Fig. 5a-e

den Trinkbehälter in einer Perspektivansicht von oben (Fig. 5a), in einer Ansicht von der linken Seite (Fig. 5b), in einer Ansicht von der rechten Seite (Fig. 5c), in einer Draufsicht (Fig. 5d) und in einer Unteransicht (Fig. 5e);

Fig. 6a+b

den Verschluss in einem vergrößerten Teilschnitt in unbetätigtem Zustand (Fig. 6a) und in betätigtem Zustand (Fig. 6b).

The invention is explained in more detail below with reference to the accompanying drawings of an exemplary embodiment. In the drawings show:

Fig. 1a-f

lip-operated closure on a drinking container in a perspective view from above ( Fig. 1a ), in a view from the left ( Fig. 1b ), in a right side view ( 1c ), in a plan view ( Fig. 1d ), in a subview ( Fig. 1e ) and in a perspective exploded view diagonally from above ( 1f );

Fig. 2a-d

the closure in a perspective view from above ( Figure 2a ), in a side view ( Figure 2b ), in a section along the line cc of Fig. 2b (Fig. 2c ) and in the top view ( Fig. 2d );

Fig. 3a-e

the main body of the closure in a perspective view from above ( Figure 3a ), in a view from the left ( Figure 3b ), in a right side view ( 3c ), in a plan view ( 3d ) and in a subview ( Figure 3e );

Fig. 4a-e

the breech body of the breech in a perspective view from above ( Figure 4a ), in a view from the left ( Figure 4b ), in a right side view ( Figure 4c ), in a plan view ( Figure 4d ) and in a subview ( Figure 4e );

Fig. 5a-e

the drinking container in a perspective view from above ( Figure 5a ), in a view from the left ( Figure 5b ), in a right side view ( Figure 5c ), in a plan view ( Figure 5d ) and in a subview ( Figure 5e );

Fig. 6a+b

the closure in an enlarged partial section in the unactuated state ( Figure 6a ) and in the actuated state ( Figure 6b ).

According to 1 a lip-operable closure 1 is arranged on top of a drinking container 2 . The lip-operated closure 1 comprises a tubular base body 3 and a tubular closure body 4. It has no other components. The tubular closure body 4 and the tubular base body 3 are like this designed so that the closure body 4 is inserted into the base body 3 when the closure 1 is mounted.

In Fig. 1a-e the closure 1 is mounted on the drinking container 2 and in 1f the components are shown in disassembled condition.

2 shows only the closure 1 in the assembled state.

According to 3 the base body 3 has an inlet opening 6 for liquid at the lower end 5 and an outlet opening 8 for liquid at the upper end 7 .

Furthermore, the base body 3 has a first cylindrical wall 9 emanating from the lower end 5, to which a first conical wall 10 widens towards the upper end 7 at the top.

From the inner side 11 of the base body 3 , in the region of the first cylindrical wall 9 , a projection 12 extends radially inward, running around the inner circumference of the base body 3 . The projection 12 has a circular disc-shaped seat 13 on the top. In the seat surface 13 there are through channels 14 in the form of radially extending grooves 15 which are spaced apart from one another in the circumferential direction. On the inner edge 16 of the projection 12, the radially extending grooves 15 are continued by axially extending grooves 17.

On the underside of the projection 12 there is a first sealing surface 18 in the form of a circular ring. This starts from the inner edge 16 of the projection 12 and extends to a first sealing lip 19 protruding from the underside of the projection for sealing on the inside of the mouth of the drinking container 2.

Below the projection 12 the first cylindrical wall 9 has an internal thread 20 for attachment to the drinking container 2 .

Furthermore, the base body 3 has on the inside 11 above the projection 12 two series of ribs 21, 22 extending in the circumferential direction with bevels on the upper edge. A first series of ribs 21 is located on the inner periphery of the first cylindrical wall 9 and a second series of ribs 22 is located on the inner periphery of the first conical wall 10 . The ribs 21, 22 are each arranged in the middle between two grooves 15 in the seat surface 13 in the circumferential direction. They serve to stiffen the base body 3 and to guide the liquid when it leaks out of the open closure 1.

The base body 3 is preferably injection molded in one piece from a hard plastic.

According to 4 and 2c the tubular closure body 4 has a second cylindrical wall 23 at the bottom, which is adjoined by a second conical wall 24 . The second conical wall 24 below has a lower second conical wall section 25 with a large cone angle and adjacent thereto an upper second conical wall section 26 with a small cone angle.

At the lower end of the second cylindrical wall 23 the closure body 4 is closed by a closure wall 27 in the form of a circular disc 28 . This has an edge section protruding radially outwards from the closure body 27 in the form of an annular disk 29 .

Furthermore, the closure body 4 has a bellows-like spring element 31 whose upper end is connected in the circumferential direction to the connection area of the lower second conical wall section 25 and the upper second conical wall section 26 . The spring element 31 has a lower and an upper leg 32, 33 which are acutely angled in opposite directions are inclined to the horizontal and connected to one another in a deflection area 34 of the bellows. A bead 35 runs around the lower edge of the lower leg 32 in the circumferential direction.

A second sealing lip 36 protrudes from the upper side of the second sealing surface 30 at the outer edge of the annular disk 29 .

The cone angle of the upper second conical wall section 26 corresponds to the cone angle of the first conical wall 10.

The closure body 4 is preferably injection molded in one piece from an elastomeric material.

According to figure 5 the drinking container 2 has a bottle body 37 with a waisted jacket 38 and a bottle bottom 39 . A bottle neck 40 with an opening 41 is located at the top of the jacket 38 .

According to 1f and 2c the closure 1 is assembled by inserting the closure body 4 through the upper end 7 into the base body 3 . In this case, the spring element 31 sits with the bead 35 on the seat surface 13 of the projection 12 . With slight deformation, the annular disk 29 is pushed through the central opening of the projection 12 delimited by the inner edge 16 until the second sealing surface 30 rests with the second sealing lip 36 on the first sealing surface 18 . The spring element 31 is slightly elastically compressed and thus prestressed. In this location, the in Figure 2c and Figure 6a is shown, the closure body 4 is held on the projection 12 in the base body 3 .

A drink can be filled into the drinking container 2 before the closure 1 is installed on the drinking container 2 .

The according 2 pre-assembled closure 1 is according to 1 can be mounted on the drinking container 2 by screwing the internal thread 20 onto the external thread 42 . Here, the first sealing lip 19 engages in the mouth 41 of the drinking container 2 and seals it.

To remove beverage, the user places his lower lip on the outside of the first conical wall 10 and his upper lip on the inside of the upper second conical wall section 26 and presses the lips together. As a result, the closure body 4 is tilted to the side where the user's lips are applied, as in FIG Figure 6b shown. The spring element 31 deflects elastically on the side on which the user's mouth is located.

On this side, the closure body 4 with the second sealing lip 36 is pivoted away from the first sealing surface 18 and a gap becomes free between the first and the second sealing surface. When the user swings up the drinking container 2 with the bottom 39 of the bottle, beverage can enter the base body from the drinking container 2 through the lower end 5, flow through the gap between the sealing surfaces 18, 30, through a first annular gap 43 between the inner edge 16 of the projection 12 and second cylindrical wall 23 or through the axially extending grooves 17, through the radially extending grooves 15 below the spring element 31 to the outside and finally through the second annular gap 44 between the base body 3 and the upper part of the closure body 4 directly into the mouth emanate from the user. After relief by the lips, the closure body 4 returns to its initial position due to the action of the spring element 31 Figure 6a back and the closure 1 seals.

Reference list:

1

closure

2

drinking container

3

body

4

closure body

5

lower end

6

entry opening

7

top end

8th

exit port

9

first cylindrical wall

10

first conical wall

11

inside

12

head Start

13

seat

14

through channel

15

radially extending groove

16

inner edge

17

axially extending groove

18

first sealing surface

19

first sealing lip

20

inner thread

21

first series of ribs

22

second series of ribs

23

second cylindrical wall

24

second conical wall

25

lower second conical wall section

26

upper second conical wall section

27

closure wall

28

circular disc

29

ring washer

30

second sealing surface

31

spring element

32

lower thigh

33

upper thigh

34

deflection area

35

bead

36

second sealing lip

37

bottle body

38

Coat

39

bottle bottom

40

bottleneck

41

mouth

42

external thread

43

first annular gap

44

second annular gap

Claims (14)

1. A combination of a lip activated closure and a drinking vessel, wherein the closure comprises:

   - a tubular base body (3) with an entrance opening (6) for liquid at the lower end (5) and an exit opening (8) for liquid at the upper end (7),

   - a projection (12) protruding radially inward between the lower end (5) and the upper end (7) from the inside (11) of the base body (3), the projection extending over the inner circumference of the base body with a seating surface (13) on the topside and a first sealing surface (18) on the underside,

   - a tubular closure body (4), which comprises

   - at a distance from its upper end a closure wall (27) blocking its cross section,

   - a revolving annular disk (29) protruding radially outward at its lower end having a second sealing surface (30) on the topside and

   - at least one spring element (31) protruding radially outward between its upper end and the annular disk (29), which supports itself at different places in circumferential direction prestressed at the seating surface (13), so that the second sealing surface (30) fits tightly on the first sealing surface (18),

   - a plurality of passage channels (14) spaced apart from one another in circumferential direction radially extended between the spring element (31) and the seating surface (13),

   - a first annular gap (43) extended upward in axial direction to the inner ends of the passage channels (14) between the base body (3) and the closure body (4) and

   - a second annular gap (44) extended upward in axial direction from the outer ends of the passage channels (14) between the base body (3) and the closure body (4),
   characterized in that

   - a first sealing lip (19) extending in circumferential direction protrudes downward from the first sealing surface (18) for sealing at the inside of the mouth (40) of a drinking vessel (2).
2. The combination according to claim 1, in which the projection (12) extending on the inside (11) of the base body (3) is in the form of a circular disk.
3. The combination according to any of claims 1 to 2, in which the base body (3) comprises beneath the projection (12) at least one screw thread (20), an element of a bayonet closure, an element of a locking connection or a cylindrical surface for welding or bonding with a drinking vessel (2).
4. The combination according to any of claims 1 to 3, in which the base body (3) comprises above the projection (12) a first conical wall (10) flaring towards the upper end (7) and/or comprises a first cylindrical wall (9) proceeding from the lower end (5).
5. The combination according to any of claims 1 to 4, in which the passage channels (14) comprise a plurality of radially extended grooves (15) in the seating surface (13) of the projection (12), the grooves having a distance from one another in circumferential direction.
6. The combination according to any of claims 1 to 5, in which the closure body (4) is closed at the lower end by a circular disk (28), which comprises the second sealing surface (30) at an edge section protruding radially outward from the closure body (4).
7. The combination according to claim 6, in which at least one second sealing lip (36) extending in circumferential direction protrudes upward from the second sealing surface (30).
8. The combination according to any of claims 1 to 7, in which the spring element (31) is in the form of a bellows, is connected at one upper end to the closure body (4) and is seated on the seating surface (13) at a lower end.
9. The combination according to any of claims 1 to 8, in which the closure body (4) comprises at the bottom a second cylindrical wall (23), which at the lower end is connected to the annular disk (29) and is connected at the top to a second conical wall (24) extending to the upper end, which wall is connected outside to the at least one spring element (31).
10. The combination according to claim 9, in which the second conical wall (24) comprises at the bottom a lower second conical wall segment (25) with a large cone angle and adjacent to it an upper second conical wall segment (26) with a small cone angle.
11. The combination according to claim 10, in which the cone angle of the upper second conical wall segment (26) coincides with the cone angle of the first conical wall (10) of the base body (3), which deviates therefrom by a maximum of ± 20%, preferably by ± 10%.
12. The combination according to claim 10 or 11, in which the spring element (31) is connected to the closure body (4) in the connection region from the lower second conical wall segment (25) and the upper, second conical wall segment (26).
13. The combination according to any of claims 1 to 12, in which the spring element (31) comprises on the lower edge a bead (35) extended in circumferential direction, which is seated on the seating surface (13).
14. The combination according to any of claims 1 to 13, in which the closure body (4) is made of silicone, a thermoplastic elastomer, latex or another elastomer.

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