closure

Abstract

The invention relates to a closure for a container comprising: an annular base element (4) extending around a longitudinal axis (3) and comprising a first through opening (9); an annular rotating element (5) operatively connected with the base element (4) and rotatable around the longitudinal axis (3) relative to the base element; and at least one closing element (6, 29). The closing element comprises a first and a second end (7, 8), wherein the first end (7) of the closing element (6, 29) is operatively connected with the base element (4), the second end (8) of the closing element (6, 29) is operatively connected with the rotating element (5), and wherein the closing element (6, 29) at least partially closes the closure opening (11) in a rotated state of the rotating element (5) relative to the base element (4).

Description

Technical Field

[0001] This invention belongs to the field of closures for containers, particularly for containers holding liquids. Background Technology

[0002] Various closures are known in the prior art. Many of these closures are disposable and can be disposed of after, for example, a beverage or some other liquid consumption. There are also closures designed for reuse.

[0003] An example of a known reusable closure is EP2825478A1, filed by Neolid and published on January 21, 2015. This document discloses a food container with a rotatable movable ring. The ring is movable between a released position and a closed position of the container opening. A membrane made of an elastic material is connected to both the container and the ring, and can be twisted between the released and closed positions by rotating the ring. To prevent the twisted membrane from folding back, the container has a protrusion and a plurality of slots, wherein the protrusion can engage in one of the slots and secure the container in the closed position.

[0004] The drawback of existing technologies is their relatively complex structure, which is difficult to clean and assemble. Summary of the Invention

[0005] The purpose of this invention is to provide a mechanically stable container closure.

[0006] The closure according to the invention is used to open and close a container, particularly a container for holding liquids. The closure includes an annular base element extending about a longitudinal axis and an annular rotating element operably connected to the base element. The rotating element is rotatable about the longitudinal axis relative to the base element. Specifically, the rotating element is rotatable between an open and closed state of the closure. The base element further includes a first through opening in the longitudinal axial direction, and the rotating element includes a second through opening in the longitudinal axial direction. Advantageously, the longitudinal axis extends through the first and / or second through opening at a central location. That is, the first and second through openings can be coaxially arranged with each other. The base element can be configured separately and operably connected to the container. For good operation, the base element can be positioned within the contour of the container in the longitudinal axial direction. In another alternative, the base element can also be configured integrally with the container. In this case, the base element should be understood as an area of ​​the container arrangement near and around the container opening.

[0007] For opening and closing the closure, the closure includes at least one closing element having a first end and a second end. In this arrangement, the first end of the closing element is operatively connected to a base element, and the second end is operatively connected to a rotating element. The closure opening is defined by the at least one closing element, which will be described in detail below. The closure opening contracts or opens radially by displacement of the second end relative to the first end (caused by rotation of the rotating element relative to the base element). A movable region of the closing element is disposed between the first and second ends, defined by the first and second ends. The movable region is advantageously disposed within the first and / or second through opening, particularly entirely within the first and / or second through opening, resulting in the closing element being disposed within the closure. Therefore, the closure is mechanically more stable, and the closing element is better protected from external influences.

[0008] As the rotating element rotates relative to the base element between the open and closed states, the cross-section of the closure opening changes. For example, the closing element can shrink the closure opening (reducing the cross-section of the closure opening) in a first rotational direction relative to the base element and reopen the closure opening (expanding the cross-section of the closure opening) in the opposite second rotational direction. If the rotating element rotates sufficiently relative to the base element, the closure or closure opening can be reached in a closed state (where the cross-section of the closure opening is zero). Advantageously, the closure opening is closed when the rotating element rotates at least 180° relative to the base element. Advantageously, the closed closure opening is closed in a liquid-tight manner.

[0009] Depending on the configuration of the closure, the rotating element can be fixed against the base element in a self-inhibiting manner in the closed state. Self-inhibition means that the rotating element and the base element are held in place by the resistance generated by friction and will not return or fold back. In other words, the restoring force acting on the rotating element in the opposite direction of rotation is less than the resistance generated by friction between the rotating element and the base element. Due to the self-inhibiting effect, locking devices and / or form-fitting mechanisms can be eliminated, which greatly simplifies the construction of the closure and increases its durability and service life. When the rotating element rotates more than 180° relative to the base element, the restoring force caused by the rotating closing element decreases, resulting in the best performance of the closure when the rotating element rotates more than 180°. That is, in the closed state of the closure, the rotating element thus advantageously rotates more than 180° relative to the base element.

[0010] Depending on the configuration, the rotating element can also be arranged relative to the base element to be displaceable in the longitudinal axial direction. Advantageously, the rotating element is further apart from the base element in the open state of the closure than in the closed state. That is, the first and second ends of the closing element are further apart in the longitudinal axial direction in the open state of the closure than in the closed state. This displacement can be supported by a guiding device. In this case, the rotating element may include a first guiding device and / or the base element may include a second guiding device for guiding the rotating element. The first guiding device may be, for example, a thread extending in a second guiding through opening of the rotating element. The second guiding device (e.g., in the form of a "T"-shaped rail, another thread, or the like) may be guided in the first guiding device. The second guiding device is advantageously located outside the base element. To facilitate operation of the closure, the second guiding device may further include at least one stop in the longitudinal axial direction for the first guiding device. However, advantageously, there are two stops in the longitudinal axial direction, with the first guiding device disposed between these two stops. When the rotating element rotates in the axial direction, the stops prevent the rotating element from separating from the base element. Furthermore, the second guide device can be fixed at an end position on the at least one stop. For example, the second guide device can be clamped between the stop and the first guide device.

[0011] Depending on its intended use, the closure may include an annular spout, at which a user can easily drink liquid from the container. The advantage of the spout is that the user does not come into contact with the membrane. The spout may have a liquid-resistant coating in at least some areas. The spout may be operatively connected to a rotating element or a base element. In the assembled state of the spout, the rotating element may be radially disposed within the spout. Alternatively, the spout may be integrally configured with the base element and / or the container. For good operation, the spout may be positioned within the contour of the container in the longitudinal axial direction.

[0012] In a preferred embodiment, the closing element is a membrane. The membrane advantageously extends from a first end to a second end in the form of a tube along the longitudinal axis. The movable area of ​​the membrane, defined by the first and second ends, can be twisted (elastically) by the rotational movement of the rotating element. When the closing element is a membrane, the closure opening is defined by the membrane. That is, the membrane, particularly the movable area of ​​the membrane, forms the closure opening in the longitudinal axis direction. The closure opening extends along the longitudinal axis direction and can be defined radially by the inner side of the membrane. The ends of the membrane are used to secure the membrane. Both the first and second ends can be annular configuration areas of the membrane. The first and / or second ends can be connected to the base element and / or the rotating element by means of snap-locking and / or form-fitting. Advantageously, this connection is liquid-tight. There can be at least one pressure ring for securing the membrane. The first end can therefore be secured between the rotating element and the pressure ring. Alternatively or additionally, the second end can also be secured between the base element and another pressure ring. It is also conceivable, for example, that the second end of the membrane is sandwiched between the rotating element and the jaw operatively connected to the rotating element. The first and / or second ends of the membrane may additionally have thickened portions. Advantageously, the thickened portions are annular. For example, the thickened portions may have a circular cross-section. On the one hand, the thickened portions can serve to better secure the ends. Alternatively or additionally, the thickened portions can function as seals.

[0013] Advantageously, the membrane is elastically deformable. In the open state of the closure, the membrane is advantageously pre-tensioned along its longitudinal axis, i.e., elastically deformable. In this tensioned state and the open state of the closure, the membrane is thus flattened without forming any wrinkles. In this way, a large closure opening with a smooth inner wall is formed. By axially displacing the rotating element relative to the base element, if the distance between the rotating element and the base element in the closed state of the closure is less than the distance in the (pre-tensioned) open state, the pre-tension force for closing the closure can be released. That is, as the rotating element rotates from the open state to the closed state, the length of the movable (torsible) region of the membrane in the axial direction decreases. In an embodiment where the first guide is threaded, the axial displacement of the rotating element relative to the base element during closing can be achieved by the pitch. For good operation of the applied force to close the closure, a ratio of L / D = 0.3-0.7, particularly L / D = 0.45-0.55, can be selected. In this context, L is the length of the movable (torsible) region of the membrane in the longitudinal axis direction when the closure is open, and D is the diameter of the (untorsible) movable region of the membrane in the open state. All elastomers are suitable materials for the membrane. In particular, compounds of rubber and latex are suitable, but butyl, polyurethane, polyisoprene, or polyhydroxybutyrate (PHB) are also included. The list is exhaustive. However, silicone is particularly advantageous. For ease of use, it may be advantageous if the membrane has an anti-adhesion coating on at least one side. Alternatively or additionally, the membrane may have a heat-insulating coating on at least one side.

[0014] Depending on the configuration of the closure, the closure may include at least one ventilation channel for equalizing the pressure in the membrane gap. The membrane gap is located between the membrane and the rotating element and / or between the membrane and the base element. During rotation of the rotating element relative to the base element, the volume of the membrane gap generally increases, which can lead to a pressure drop within the membrane gap. This pressure drop causes the membrane to deform in such a way that it adheres to itself, making closure of the closure more difficult. To avoid this effect, the closure may include at least one ventilation channel that connects the membrane gap to the environment of the closure in a manner that allows for pressure equalization. The ventilation channel (at least one) may extend from a first opening on the outside of the closure to a second opening located within the membrane gap. Advantageously, the ventilation channel extends between the base element and the rotating element. The ventilation channel may be configured, for example, as a gap between the base element and the rotating element. If a guiding device, such as the aforementioned thread, is present, then the first and / or second guiding device may be interrupted circumferentially by the at least one ventilation channel.

[0015] In a further alternative embodiment of the invention, the closure comprises at least one closing element in the form of a string. Good results can be achieved with three strings. The at least one string may be fixed at one end to a base element and at the other end to a rotating element. In the case of multiple strings, these strings are advantageously evenly distributed around a longitudinal axis. These strings define the closure opening disposed between the strings. That is, the cross-section of the closure opening can be changed by the movement of the strings. If there is only one string, it surrounds the closure opening. As a result of the rotational movement of the rotating element, the second end of the at least one string is displaced in such a way that the closure opening is contracted and its cross-section is reduced. The contraction can be reversed by a corresponding reverse movement. In the case of three strings, the initial rotational angle across the closure may be approximately α = 100°, and as the rotating element rotates, it may rotate another 100°, resulting in the strings ultimately crossing 200° and contracting the closure opening. These strings advantageously possess high abrasion resistance and elasticity similar to or lower than that of fishing line. The suitable elastic modulus of a thin rope is between 0.01 GPa and 4 GPa (1 GPa = 10⁻⁶ GPa). 9 N / m 2 Plastics or plastic compounds are also suitable, especially elastomers, elastic fibers, polyesters, polyamides, but also include rubber or silicone compounds, fullerenes, metals, wool, silk, cotton, rayon or viscose.

[0016] To close the closure (in a liquid-tight manner), a sleeve (with at least one cord) can be provided in this embodiment, which can be contracted by the at least one cord due to rotational movement. The contraction of the sleeve is reversed accordingly by a corresponding reverse movement of the rotating element. The effect of the rotational movement is that the sleeve is contracted radially, finally clamping the closure opening in a fully rotated state. Thus, the sleeve is elastically deformable. In each case, the sleeve can be positioned on the base element with its first and second edges. Advantageously, the sleeve extends from the first edge to the second edge in the longitudinal axial direction in the form of a tube. The at least one cord is advantageously positioned radially outside the sleeve and longitudinally between the edges of the sleeve. In the embodiment with cords, the tubular sleeve forms the closure opening in the longitudinal axial direction. In this case, the closure opening can be particularly defined by the inner side of the sleeve. In the contracted state, the closure opening is advantageously closed in a liquid-tight manner. The sleeve can be made of the same material as the membrane. A coating of the membrane can also be used in the case of the sleeve. In the non-retracted state, the sleeve can be coaxially positioned along the first and / or second through opening in at least one or more areas. Similarly, the restoring force of the elastic sleeve ensures that, in the open state, the at least one cord is pushed outward by the sleeve, thus releasing the closure opening again.

[0017] According to an embodiment, the closure may include an additional operating element. The operating element can be operably connected to the rotating element to facilitate rotation of the rotating element. The operating element may be annular. According to the design, the rotating element may be radially disposed inside the base element (facing the longitudinal axis). In this case, the operating element can be operably connected to the rotating element through an opening in the base element via at least one operable connecting device (e.g., a web and / or gears and / or toothing). In this way, adjustment of the operating element causes rotation of the rotating element. Vertical movement on the operating element is also possible if a corresponding offset of the effective force is provided. Advantageously, an opening is provided for each operable connecting device. For example, two or more webs may be provided in two or more openings to allow for greater freedom in terms of rotation angle, which can be varied accordingly and may reach approximately 170°. The at least one opening may be a slotted design and may extend around the circumference of the base element at least in some or some areas. Furthermore, the operating element may include a handle.

[0018] Depending on the application, a locking device may be provided to lock the rotating and / or operating elements in the closed position. This locking device can be implemented using levers or sliders, clamping mechanisms, springs, or some other common mechanism. There are no restrictions on the choice of materials, as long as the performance required for operation is guaranteed. These properties include robustness, machinability, and resistance to the anticipated adverse effects of heat, cold, and moisture.

[0019] As described above, the closure can be operatively connected to the container. The container advantageously has a bottom and tubular walls, the tubular walls being incorporated into the bottom. The walls surround the filling space of the container. The walls can be substantially cylindrical and / or conical in at least some or all areas. Depending on the application, the container can be double-walled, particularly vacuum-insulated. Other properties of the container (e.g., the ability to store heat and cold, or the inclusion of insulation or handles) are self-evident and will not be described further here. Metals, particularly stainless steel, are suitable materials for the container. However, the container can also be a composite material composed of some materials selected from: natural rubber, paper, silicone, bamboo and hemp fiber, stainless steel, aluminum, wood, glass, plastics (PP, PU, ​​PET, polystyrene, ESP, PLA), ceramics, porcelain, cardboard, and artificial stone, or can be produced from individual materials among these. If the base elements and / or rotating elements and / or jaws are configured separately, they can advantageously include plastics, such as polypropylene. Attached Figure Description

[0020] Various aspects of the invention will be described in more detail with reference to the exemplary embodiments shown in the following figures and related descriptions. More specifically:

[0021] Figure 1 A perspective view of a first variation of the closure and container according to the invention in the open state is shown;

[0022] Figure 2 It shows according to Figure 1 A perspective view of the closure and the first variation of the container in the closed state;

[0023] Figure 3 It shows according to Figure 1 A cross-sectional view of the closure and the container;

[0024] Figure 4 It shows according to Figure 1 Exploded view of the closure and container;

[0025] Figure 5 A cross-sectional view is shown of a second variation of the closure and container according to the present invention;

[0026] Figure 6 It shows according to Figure 5 A partial perspective cross-sectional view of the closure and container;

[0027] Figure 7 illustrates a third variation of the closure and container according to the present invention;

[0028] Figure 8 illustrates a fourth variation of the closure and container according to the present invention;

[0029] Figure 9 illustrates a fifth variation of the closure and container according to the present invention;

[0030] Figure 10 shows a sixth variation of the closure and container according to the present invention;

[0031] Figure 11 shows a seventh variation of the closure and container according to the present invention;

[0032] Figure 12 shows an eighth variation of the closure and container according to the present invention. Detailed Implementation

[0033] Figures 1 to 4A first variation of the closure 1 and container 2 according to the present invention is shown. The container includes a wall 22 and a bottom 23. The closure 1 includes: an annular base element 4 extending about a longitudinal axis 3 and having a first through opening 9; an annular rotating element 5 operably connected to the base element 4 and rotatable relative to the base element 4 about the longitudinal axis 3, and having a second through opening 10; and a closing element for closing the closure opening 11. In the example shown, the closing element is a tubular elastic membrane 6 that forms the closure opening 11 in the longitudinal axial direction. In the closed state of the closure 1, the closure opening 11 is contracted (see...). Figure 2 On the other hand, in the open state, such as Figure 1 As shown, the membrane 6 extends substantially along the first through opening 9 and / or the second through opening 10.

[0034] like Figure 3 As shown, the first end 7 of the membrane 6 is operatively connected to the base element 4, and the second end 8 is operatively connected to the rotating element 5. When the rotating element 5 rotates relative to the base element 4, the movable region of the membrane 6 defined by the first end 7 and the second end 8 is correspondingly twisted. In the example shown, the membrane 6 is clamped and / or adhered between the rotating element 5 and the mouth 15 via its second end 8. The first end 7 of the membrane 6 is clamped and / or adhered between the base element 4 and the container 2. The first end 7 and the second end 8 each have a thickened portion 20 with a sealing effect. The mouth 15 is placed on the rotating element 5 and can rotate accordingly relative to the base element 4.

[0035] The first guide device is provided on the rotating element 5 in the form of a thread 12, which extends around the second through opening 10 in at least some areas. Outside the base element 4, a second guide device 13 is provided in the form of multiple "T"-shaped slide rails or corresponding mating threads 13, and the second guide device 13 is guided within the first guide device 12. When the rotating element 5 rotates relative to the base element 4 from an open state to a closed state, the second guide device 13 is guided within the first guide device 12, and the rotating element 5 moves toward the base element 4 along the longitudinal axis 3 (see...). Figure 1 and Figure 2 Simultaneously, when the rotating element 5 rotates from the open state to the closed state of the closure 1, the length of the movable (torsible) region of the membrane 6 in the axial direction decreases, and the movable region of the membrane 6 is elastically tortuous. After rotating at least 180°, the opening 11 of the closure is closed by the membrane 6. In this state, the tension of the membrane 6 in the longitudinal axis 3 direction is very large, causing self-restraint between the first guide device 12 and the second guide device 13, preventing the membrane 6 from folding back.

[0036] from Figure 4 As can be seen from the exploded view, the first guide device 12 is interrupted in the circumferential direction. In this case, each interruption forms a ventilation channel 19. This allows for pressure equalization in the membrane gap 18 between the membrane 6 and the base element 4 and / or the rotating element 5. Figure 3 The diagram schematically illustrates the membrane gap 18 of the elastically tortuous membrane 6', the volume of which has been increased.

[0037] Figure 5 and Figure 6 A second variation of the closure element 1 and container 2 according to the invention is shown. The membrane is not shown. The second variation differs from the first variation in that the base element 4 is integrally configured with the container 2. The base element is formed by the (integral) region of the container located around the container opening. A first pressure ring 16 clamps the second end of the closure element or membrane between the first pressure ring 16 and the rotating element 5. A second pressure ring 17 clamps the first end of the membrane between the second pressure ring 17 and the base element 4. Rotation of the rotating element 5 can be achieved, for example, by raising the rotating element 5 in the direction of the longitudinal axis 3 against the tension of the membrane. A ventilation channel 19 for the membrane gap is also provided in this variation. Figure 6 The diagram illustrates how a slit-shaped ventilation channel 19 extends between the base element 4 and the rotating element 5. A groove 21 in the rotating element ensures that the ventilation channel 19 is not closed.

[0038] Figures 7 through 12 illustrate another exemplary embodiment of the closure 1 for closing the container 2, wherein the closing element is in the form of at least one thin rope 29. The at least one thin rope 29 defines a closure opening 11 of the closure 1, which is formed by a tubular sleeve 27. In these exemplary embodiments, the base element and the jaw are configured integrally with the container. However, it is also conceivable that the base element and the jaw may be configured as separate components.

[0039] Figures 7 and 8 show exemplary embodiments of the closure 1 for closing the container 2 in longitudinal and cross-sectional views, respectively. The container 2 includes a wall 22 and a bottom 23 surrounding a filling space 24, and the container has a central vertical longitudinal axis 3. The upper end of the wall 22 in the region of the integral base element 4 includes one or more laterally, outwardly continuous openings 26. A sleeve 27 is disposed in the interior space 25 of the container 2 and is sealed to the wall 22 or the (integral) base element 4 by means of its edges 37 located above and below the openings 26. In the illustrated case, the sleeve 27 (in the open state) is disposed substantially concentrically with respect to the wall 22. In Figure 7, an adjustable annular rotating element 5 for opening and closing the closure 1 is radially disposed outside the base element 4. In Figure 8, the annular rotating element 5 is arranged in the interior space of the container 2 and within the base element 4, which is operatively connected to an external operating element 28. The rotating element 5 is rigidly connected to the operating element 28 via the opening 26 through a connector 29. When the operating element 28 is rotated, the connector 29 rotates in the same manner.

[0040] In both embodiments, multiple strings 29 are radially arranged outside the sleeve 27 along the longitudinal axis between the edges 37. Each string 29 has two ends 7 and 8. The first end is connected to the base element 4, and the second end is connected to the rotating element 5. That is, the strings are operably connected to the rotating element 5 in such a way that by adjusting the rotating element 5, the second end 8 moves relative to the first end 7. As a result, the sleeve 27 is radially elastically contracted in the direction of the longitudinal axis 3 and finally clamped. The filling space 24 is thus closed in a liquid-tight manner. In these embodiments, three strings 29 are provided. In the open state, the first end 7 and the second end 8 of each string 29 preferably span an angle α of about 90-120° around the longitudinal axis 3, and this angle α becomes larger as the rotating element 5 rotates. In the fully open state, the sleeve 27 compresses the strings 29 arranged outside it outward by its tension. This is allowed because the strings 29 are not yet tensioned. When the operating element 28 is rotated, the rotating element 5 in these examples moves clockwise; however, in a suitable configuration, the other direction is of course possible. The more the rotating element 5 rotates, the greater the angle α that each string 29 spans around the longitudinal axis 3, resulting in the strings 29 pressing the sleeve 27 against the longitudinal axis 3, while the tension of the sleeve 27 constantly resists it. Therefore, the closure 1 is not yet closed when the first end 7 and the second end 8 of each string 29 are facing each other in the container 2. Only when the angle α is greater than 180°, approximately 200-220°, is the sleeve 27 clamped by the strings 29 in the region of the longitudinal axis 3 without any further leakage of droplets from the filling space 24 (see [link to closure]). Figure 7b and Figure 8bIn this case, the rotation angle 36 performed by the user via rotation is approximately 80-115°. In these embodiments, the opening 26 is therefore designed as three long arcuate grooves, the angle between the arcuate grooves and the longitudinal axis being approximately 110°, thereby allowing the connector 30 to move within the grooves. The connection area 31 located on the wall 22 or base element 4 between the openings 26 rigidly connects the upper region of the container 2 (including the mouth 15) to the remaining region of the container 2 (including the bottom 23).

[0041] Figure 9 shows another embodiment of the closure 1 on container 2. In this embodiment, the operating element 28 is operatively connected to the rotating element 5 in the internal space 25 via a connector 30 through a single opening 26. This opening 26 spans an angle α relative to the longitudinal axis 3, for example, approximately 100-120°. The arrangement of the string 29 and the securing of its ends 7, 8 are consistent with Figure 8. However, since only one opening 26 is provided here, the sealing relative to the outside is simpler. The rotating element 5 is preferably guided in a circumferential groove 32 in the base element 4 so as to always maintain its axial position.

[0042] In the embodiment according to FIG. 10, there is also only one opening 26. The opening is not necessarily slot-shaped, but is smaller than in the previously described embodiments. The operating element 28 is annular and operatively connected to the internal rotating element 5. A gear 33 is disposed in the opening 26, and a toothed structure 34 is connected to the annular operating element 28 and the rotating element 5, the toothed structure meshing in the gear 33. As a result, rotation of the annular operating element 28 inevitably leads to the reverse rotation of the rotating element 5. In this embodiment, the rotating element 5 and / or the annular operating element 28 can be guided in the groove 32 of the wall 22 or the base element 4. The advantage of this arrangement is that the single opening 26 is smaller than in other embodiments. Furthermore, the rotating element 5 can be rotated as needed, exceeding 360° if necessary.

[0043] Figure 11 shows the same example, with three gears 33 in three openings 26. In both examples according to Figures 10 and 11, three strings 29 can be connected to the rotating element 5, as shown in Figure 10, or only one string, as shown in Figure 11. In the latter case, a larger rotation angle 36 must be selected accordingly to ensure that the angle α spanned by the string around the longitudinal axis 3 is approximately 500-540° when the container 2 is closed in a liquid-tight manner. Two strings 29 can also be provided to achieve better symmetry as the container 2 wears.

[0044] In the exemplary embodiment according to FIG12, the rotating element 5 is of annular configuration and is fixed in an external groove of the wall 22 or the base element 4. This exemplary embodiment has a relatively small opening 26 (no connector 30 extends through the opening, and no gear 33 is disposed in the opening). A string 29 extends through the at least one opening 26, transmitting the action of the rotating element 5 to the interior space 10. For this purpose, in each case, the first end 7 of the at least one string 29 is directly connected to the base element 4, specifically to the wall 22 opposite the opening 26, and the string 29 is thus wound around the sleeve 27 one and a half turns. The second end 8 of the single string 29 is connected to the rotating element 5. When the rotating element 5 is rotated, the string 29 contracts the sleeve 27 and elastically compresses it toward the longitudinal axis 3. Therefore, in this example, only one opening 26 and one string 29 are provided. The size of the opening 26 is only sufficient to allow the string 29 to pass through.

[0045] In all embodiments shown in Figures 7 through 12, the number of strings 29 can be varied. Depending on the application, additional locking devices 35 can be provided in all embodiments for locking the operating elements and / or rotating elements in the closed position, for example, as... Figure 7d The diagram is schematically shown. However, as mentioned above, this embodiment can also be closed by a self-suppressing method. Furthermore, in all embodiments, the opening can also be formed obliquely in the longitudinal axis direction, such that the rotating element can be displaced relative to the base element in the longitudinal axis direction due to the rotation of the rotating element. Therefore, as mentioned above, the opening or the element extending through the opening can serve as the first and second guide devices.

[0046] List of reference numerals

[0047] 1. Enclosure part 20 thickened section

[0048] 2 containers, 21 grooves

[0049] 3 longitudinal axis 22 wall

[0050] 4 base element 23 bottom

[0051] 5 rotating elements, 24 filling spaces

[0052] 6 membrane-like structures 25 internal spaces

[0053] 7. First end 26 opening

[0054] 8 Second end 27 sleeve

[0055] 9 First through opening 28 Operating elements

[0056] 10 Second through opening 29 Thin rope

[0057] 11 Closure opening 30 Connector

[0058] 12 First guide device 31 Connection area

[0059] 13 Second guide device 32 Groove

[0060] 14 Stop section 33 Gear

[0061] 15 teeth on the jaw and 34 teeth on the mouth.

[0062] 16 First pressure ring 35 Locking device

[0063] 17 Second pressure ring 36 Rotation angle

[0064] 18 Membrane gaps 37 Edges

[0065] 19 ventilation ducts

Claims

1. A closure (1) for a container (2), comprising: a. An annular base element (4) extending around the longitudinal axis (3) and having a first through opening (9). b. An annular rotating element (5) having a second through opening (10), the annular rotating element (5) being operably connected to the base element (4) and capable of rotating relative to the base element (4) about the longitudinal axis (3); wherein the rotating element (5) is capable of displacement relative to the base element (4) in the direction of the longitudinal axis (3); and c. At least one closing element (6, 29) having a first end (7) and a second end (8), wherein, i. The at least one closing element (6, 29) is operably connected to the base element (4) at the first end (7) and operably connected to the rotating element (5) at the second end (8), wherein, ii. The closure opening (11) defined by the at least one closing element (6, 29) is capable of radially contracting by displacement of the second end (8) relative to the first end (7), and wherein, iii. The movable region of the closing element (6, 29), defined by the first end (7) and the second end (8) of the closing element (6, 29), is arranged within the first and / or second through opening (9, 10); and d. At least one ventilation channel (19) for equalizing the pressure in the membrane gap (18).

2. The closure (1) according to claim 1, characterized in that, When the closure opening (11) is closed, the rotating element (5) is fixed to the base element (4) in a self-inhibiting manner.

3. The closure (1) according to claim 1, characterized in that, The rotating element (5) includes a first guide device (12) and / or the base element (4) includes a second guide device (13) for guiding the rotating element (5) in the direction of the longitudinal axis (3).

4. The closure (1) according to claim 3, characterized in that, The closure (1) includes at least one stop (14) for the second guide device (13) in the direction of the longitudinal axis (3).

5. The closure (1) according to claim 4, characterized in that, The second guide device (13) can be clamped onto the at least one stop (14).

6. The closure (1) according to any one of the preceding claims, characterized in that, The closing element is a membrane (6) that can be twisted by the rotational movement of the rotating element (5).

7. The closure (1) according to claim 6, characterized in that, With the closure opening (11) closed, the rotating element (5) rotates at least 180° relative to the base element (4).

8. The closure (1) according to any one of claims 6 or 7, characterized in that, The membrane (6) has an anti-adhesion coating on at least one side.

9. The closure (1) according to any one of claims 6 to 8, characterized in that, The membrane (6) is connected to the base element (4) and / or the rotating element (5) by means of a snap ring locking and / or shape fit.

10. The closure (1) according to claim 9, characterized in that, At least one pressure ring (16, 17) is provided to fix the membrane (6).

11. The closure (1) according to any one of claims 6 to 10, characterized in that, When the closure (1) is open, the membrane (6) is pre-tensioned in the direction of the longitudinal axis (3).

12. The closure (1) according to any one of claims 3 and 11, characterized in that, The first and / or second guide devices (12, 13) are interrupted in the circumferential direction by the at least one ventilation channel (19).

13. The closure (1) according to any one of the preceding claims, characterized in that, The closure (1) includes a mouth (15) operatively connected to the rotating element (5) or the base element (4).

14. A container (2) comprising a closure (1) as described in any one of claims 1 to 13.

15. The container (2) according to claim 14, characterized in that, The base element (4) is integrally connected to the container (2).

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