lid for a container

Abstract

Lid for a container (1), - wherein the lid has an upper layer (5) and a lower layer (6) arranged below it, - wherein the upper layer (5) and the lower layer (6) are connected to each other so that they are fixed relative to each other, - wherein an upper through-opening (7) is provided in the upper layer (5), - wherein a lower through-opening (9) is provided in the lower layer (6) or the lower layer (6) is prepared for the provision of a lower through-opening (9), - wherein the upper passage opening (7) and the lower passage opening (9) have an overlapping area in which they lie on top of each other, in particular the upper and the lower passage opening (7, 9) are at least substantially congruent, - wherein the lid has an intermediate layer (10) arranged between the upper layer (5) and the lower layer (6), - wherein the intermediate layer (10) is movably mounted relative to the upper layer (5) and the lower layer (6), such that a closed area of ​​the intermediate layer (10) can be moved in one direction of movement from a release position to a locking position and back, - wherein the closed area at least substantially releases the overlapping area in the release position and completely covers it in the locking position, characterized by, - that an upper profile (13) extending transversely to the direction of movement is incorporated into the upper layer (5), which extends over an upper length region in the direction of movement, and / or a lower profile (14) extending transversely to the direction of movement is incorporated into the lower layer (6), which extends over a lower length region in the direction of movement, - that in the case that both the upper profile (13) and the lower profile (14) are placed in the upper position (5) and the lower profile (14) are placed in the lower position (6), the upper profile (13) and the lower profile (14) are arranged in the same position when viewed transversely to the direction of movement, run in the same manner and the upper and lower length regions have a common length region, - that a middle profile (15) is inserted into the intermediate layer (10), which, viewed transversely to the direction of movement, is arranged in the same position as the upper profile (13) and / or the lower profile (14) and extends in the direction of movement at least over a middle length range, - that the upper and / or the lower profile (13, 14) are aligned with the middle profile (15) in such a way that the intermediate layer (10) is guided when pivoting from the release position to the locking position and back by the interaction of the middle profile (15) with the upper profile (13) and / or with the lower profile (14).

Description

[0001] The present invention relates to a lid for a container, - wherein the lid has an upper layer and a lower layer arranged underneath it, - wherein the upper layer and the lower layer are connected to each other so that they are fixed relative to each other, - wherein an upper through-opening is provided in the upper layer, - wherein a lower through-opening is provided in the lower layer or the lower layer is prepared for the provision of a lower through-opening, - wherein the upper passage opening and the lower passage opening have an overlapping area in which they lie on top of each other, in particular the upper and the lower passage opening are at least substantially congruent, - wherein the lid has an intermediate layer arranged between the upper layer and the lower layer and into which a central through-hole is provided, - wherein the intermediate layer is movably mounted relative to the upper layer and the lower layer, so that a closed area of ​​the intermediate layer can be moved in one direction of movement from a release position to a locking position and back, - wherein the closed area at least substantially releases the overlapping area in the release position and completely covers it in the locking position.

[0002] In the release position, the overlapping openings and the closed section removed from the overlapping area form a resulting opening. In the locking position, access to the interior of a container on which the lid is placed is blocked by the closed section through the openings.

[0003] Such a lid is known, for example, from WO 2023 / 083 902 A1.

[0004] The lid known from WO 2023 / 083 902 A1 already represents a significant improvement over other lids. However, tests have shown that a relatively large material thickness is required for the lid's layers, especially the intermediate layer. Otherwise, there is a risk that the intermediate layer will quickly deform in the area where it is stored, rendering the lid unusable. There is also a risk that the intermediate layer will wrinkle, which would also render the lid unusable.

[0005] The object of the present invention is to design a lid of the type mentioned above in such a way as to improve its support, thereby eliminating the risk of deformation. Furthermore, the intermediate layer should not wrinkle, even though the material thickness, particularly of the intermediate layer, is kept relatively thin.

[0006] The problem is solved by a lid having the features of claim 1. Advantageous embodiments of the lid are the subject of dependent claims 2 to 15.

[0007] According to the invention, a lid of the type mentioned above is designed by: - that an upper profile running transversely to the direction of movement is incorporated into the upper layer, extending over an upper length region in the direction of movement, and / or that a lower profile running transversely to the direction of movement is incorporated into the lower layer, extending over a lower length region in the direction of movement, - that in the case where both the upper profile and the lower profile are placed in the upper layer, the upper and lower profiles are arranged in the same position when viewed transversely to the direction of movement, run in the same manner, and the upper and lower length regions have a common length region, - that a middle profile is inserted into the intermediate layer, which, viewed transversely to the direction of movement, is arranged in the same position as the upper profile and / or the lower profile and extends in the direction of movement at least over a middle length range, - that the upper and / or the lower profile are aligned with the middle profile in such a way that the intermediate layer is guided during pivoting from the release position to the locking position and back by the interaction of the middle profile with the upper profile and / or with the lower profile.

[0008] The fixed position of the upper and lower layers relative to each other means that they are neither movable nor rotatable relative to one another. Therefore, if a specific point in the upper layer is located above a specific point in the lower layer, this arrangement remains unchanged over time.

[0009] The interaction of the middle profile with the upper and / or lower profiles guides the intermediate layer. The necessary guiding forces are therefore not concentrated at a single point, but distributed over a larger area. This eliminates the problems associated with prior art. Furthermore, the interaction of the profiles reliably fixes and guides the intermediate layer in the direction of movement, except during movement itself.

[0010] The movement of the intermediate layer relative to the upper and lower layers can, in some cases, be linear. In this case, the direction of movement is always the same. However, the movement of the intermediate layer relative to the upper and lower layers is usually rotational. In this case, the direction of movement is around an axis of rotation. The upper and / or lower profiles then rotate around the axis of rotation in a ring-like fashion. The middle profile may also rotate around the axis of rotation in a ring-like fashion, but this is not mandatory. It is also possible that the upper and / or lower profiles each rotate around the axis of rotation only over a specific angular range, where each angular range is less than 360°. In this case, the middle angular range must be significantly smaller than any specific angular range.Furthermore, in this case, the swivel angle - depending on the constellation - is at most as large as the difference between the upper angle range, the lower angle range or common angle range on one side and the middle angle range on the other side.

[0011] In the case of a rotational movement, the axis of rotation preferably coincides with the center of gravity of the lid, i.e., its center. In principle, however, the axis of rotation can also lie outside the center of gravity of the lid.

[0012] In many cases, both the upper and lower profiles are present. However, in some cases, only either the upper or the lower profile may be present, in addition to the middle profile.

[0013] It is possible that the intermediate layer consists essentially only of the closed area. In this case, for example, if the intermediate layer is rotated around the axis of rotation, it may be shaped like a circular sector extending only over a specific angular range. In many cases, however, the intermediate layer will be essentially the same size as the upper and lower layers and will only have its own through-opening. This through-opening is moved into the overlap area when the intermediate layer is moved into the release position and out of the overlap area when the intermediate layer is moved into the locking position. The intermediate layer's own through-opening is subsequently referred to as the central through-opening.

[0014] The upper layer is that area of ​​the lid which extends substantially flat across its top surface. The upper layer may transition into a folded edge. However, the edge is no longer considered part of the upper layer according to the present invention. Similarly, the lower layer is that area of ​​the lid which extends substantially flat across its underside. The lower layer may also transition into a folded edge. However, the edge is no longer considered part of the lower layer according to the present invention.

[0015] Preferably, the upper and / or lower profiles are matched to the middle profile in such a way that the middle profile lies flat against the upper and / or lower profiles. With regard to the middle profile, for example, the height and curvature of a profile ridge pointing towards the upper profile are precisely matched to the recess that the upper profile provides for this ridge. An analogous approach is also taken – alternatively or additionally – with regard to the interaction between the middle and lower profiles.

[0016] This approach ensures that there is not only line contact extending over the middle length, but also surface contact between the profiles. Because of this, the (relatively low) contact force required to press the profiles together is distributed over a large area. This reduces the risk of jamming.

[0017] The profiles can, in principle, be designed in any shape. For example, they can be U-shaped, V-shaped, sawtooth-shaped, trapezoidal, or otherwise shaped. Combinations of these profiles are also possible. In tests, designs in which the middle profile and the upper and / or lower profiles have a wave-like curve have proven particularly advantageous. This wave shape ensures that the profiles have no kinks but are continuously curved. This offers advantages in terms of manufacturing.

[0018] Particularly in combination with the flat contact of the profiles with one another and the presence of all three profiles, it is preferably provided that the middle profile has crests and troughs, wherein – relative to the level of the intermediate layer outside the middle profile – the crests face the upper profile and the troughs face the lower profile. In this embodiment, the crests and troughs preferably have different heights. Here, the crests can be more pronounced than the troughs, or conversely, less pronounced than the troughs, as required.

[0019] Preferably, the middle profile and the upper and / or the lower profile, viewed transversely to the direction of movement, form a profile sequence with several periods, in particular with more than two complete periods.

[0020] The movement of the intermediate layer is typically a rotation around an axis of rotation. In this case, several configurations are possible.

[0021] For example, the central profile may have an inner section, viewed from the axis of rotation, that is located exclusively radially within the central opening. Conversely, the central profile may also have an outer section, viewed from the axis of rotation, that is located exclusively radially outside the central opening. In the case of a combination of these configurations, the central profile has both an inner and an outer section. The inner section is located exclusively radially within the central opening, viewed from the axis of rotation, while the outer section is located exclusively radially outside the central opening.

[0022] Regardless of which of the above-described configurations is implemented for the middle profile, the same configuration will be implemented for the upper and / or the lower profile.

[0023] In the first case (keyword "exclusively radially inside"), the overlap area can be located far radially outside. In the second case (keyword "exclusively radially outside"), particularly reliable guidance of the intermediate layer by the profiles is achieved.

[0024] In the first case, the radial distance of the inner section from the axis of rotation is preferably greater than the difference between the radial distance of the overlap area from the axis of rotation and the radial distance of the inner section from the axis of rotation. The inner section is therefore also preferably positioned relatively far outwards. This improves the guiding properties of the profiles.

[0025] In the second case, the radial distance of the outer section from the axis of rotation is preferably a maximum of 10% greater than the radial distance of the overlap area from the axis of rotation. This allows the central through-opening to be positioned relatively far radially outwards.

[0026] It should also be mentioned that it is conceivable that the central profile has a section which, viewed from the axis of rotation, is arranged radially in the area of ​​the central through-opening. In this case, however, the central angular range over which this section extends circumferentially around the axis of rotation must be disjoint from the angular range over which the central through-opening extends.

[0027] If the movement of the intermediate layer is a rotational movement about an axis of rotation, the intermediate layer preferably has a recess in the region of the axis of rotation. In this case, the upper and lower layers are connected to each other through the recess in the region of the axis of rotation, for example, by gluing or welding. It is also possible for the upper and lower layers to be connected by positive locking or press fit. This results in a simple and stable connection or fixation of the upper and lower layers. The recess can, in particular, be circular and centered relative to the axis of rotation.

[0028] As mentioned previously, the movement of the intermediate layer can be linear. In this case, the central profile, viewed transversely to the direction of movement, preferably has a first section and a second section, and the overlap area, viewed transversely to the direction of movement, is located between the first and second sections. By arranging the profile on both sides of the through-openings, the sealing of the through-openings can be improved in the locked position. Alternatively, in the case of linear movement, the central profile, viewed transversely to the direction of movement, can be located only on one side of the overlap area, or, viewed in the direction of movement, it can be located in front of or behind the overlap area.

[0029] Typically, the top layer has a top vent, the bottom layer a bottom vent, and the middle layer a middle vent. This prevents pressure from building up in the cup or similar container on which the lid is placed. The vents can be relatively small, usually with a maximum diameter of 3 mm. Preferably, the diameter is even smaller, but should not be less than 1 mm. The diameter is typically between 1.5 mm and 2.5 mm, for example, approximately 2.0 mm. Other cross-sections can be used instead of circular vents, with the area of ​​each cross-section being determined by the diameters mentioned above.

[0030] In its simplest form, when the closed section of the intermediate layer is in the locked position, the upper, lower, and middle vent openings are arranged directly above one another. Alternatively, when the closed section of the intermediate layer is in the locked position, the middle vent opening may be offset from the upper and / or lower vent openings in the direction of movement. In this case, the middle vent opening is connected to the offset vent openings via a ventilation channel running in the direction of movement. These ventilation channels can be relatively small, typically with a cross-section of approximately 1 mm. 2 perfectly sufficient.

[0031] In the case of the staggered arrangement of the vent openings, when the closed section of the intermediate layer is in the locked position, the upper and lower vent openings are located on the same side as the middle vent opening when viewed in the direction of movement. This ensures that any liquid that might leak out through the vent openings if a cup or similar object, upon which the lid is placed, were to tip over or be turned upside down, has to travel a much longer distance, figuratively speaking. As a result, the lid's seal is improved.

[0032] Preferably, the upper layer has a dome-shaped projection in the area of ​​the upper vent opening, bulging away from the intermediate layer, so that an upper cavity extending from the upper vent opening to the middle vent opening is formed between the upper layer and the intermediate layer. Alternatively or additionally, the lower layer has a dome-shaped projection in the area of ​​the lower vent opening, bulging away from the intermediate layer, so that a lower cavity extending from the lower vent opening to the middle vent opening is formed between the lower layer and the intermediate layer. This design creates cavities in which liquid can accumulate before it flows out of the upper vent opening.

[0033] Further advantages and details will become apparent from the following explanation of exemplary implementations. These are shown in principle: Fig. 1 a container and a lid, Fig. 2 a perspective exploded view of the lid of Fig. 1, Fig. 3 another perspective exploded view of the lid of Fig. 1, Fig. 4 a top view of an upper layer, Fig. 5 a top view of a lower layer, Fig. 6. A top view of an intermediate layer when it is in a locked position, Fig. 7. A top view of an intermediate layer when it is in a release position, Fig. 8. Make a cut in a profile area of ​​the lid from radial inside to radial outside, Fig. 9 a modification of Fig. 6, Fig. 10 another modification of Fig. 6, Fig. 11 a cut in a central area of ​​the lid, Fig. 12 a cut through the lid in the area of ​​ventilation openings, Fig. 13 a modification of Fig. 12 and Fig. 14 another modification of Fig. 12.

[0034] According to Fig. 1. A substance 2, often a liquid, is contained in a container 1 – for example, a cup or the like. The container 1 (usually its upper rim 3) can be subjected to pressure, as in Fig. As indicated by an arrow, a lid 4 is placed on the vessel 1. The act of placing and, if necessary, connecting the lid 4 to the vessel 1 is known and not the subject of the present invention.

[0035] Lid 4 can be made of plastic. It is usually made of paper. Lid 4 has, according to the Fig. 2 and Fig. Figure 3 shows an upper layer 5 and a lower layer 6. The lower layer 6 is positioned beneath the upper layer 5. The upper and lower layers 5 and 6 are connected to each other, so that they are fixed relative to one another. The upper layer 5 is therefore immobile relative to the lower layer 6. Possible methods of fixation will be discussed later.

[0036] An upper through-opening 7 is provided in the upper layer 5. The upper through-opening 7 can be configured as shown in the illustration. Fig. 2 and Fig. 3. For example, it can be oval. Alternatively, it can be circular or shaped like a sector of a ring. It can also have another shape, for example, like a symmetrical trapezoid, with the long side of the trapezoid located radially outside with respect to an axis of rotation 8.

[0037] A lower through-opening 9 is provided in the lower layer 6. Alternatively, the lower layer 6 can be prepared to accommodate a lower through-opening 9. For example, an edge of the (subsequent) lower through-opening 9 can have a perforation. Regardless of whether one or the other configuration is implemented, the upper and lower through-openings 7, 9 have an overlapping area where they lie one on top of the other. In particular, the lower through-opening 9 is designed as shown in the Fig. 2, Fig. 3, Fig. 4 to Fig. 5 preferably at least substantially congruent with the upper passage opening 7.

[0038] The cover 4 further comprises an intermediate layer 10. The intermediate layer 10 is arranged between the upper layer 5 and the lower layer 6. The intermediate layer 10 is movably mounted relative to the upper layer 5 and the lower layer 6. In this case, the mounting is such that the closed area of ​​the intermediate layer 10 can be rotated about a pivot axis 8 from a release position to a locking position and back. However, it is also possible for the intermediate layer 10 to be linearly (straight) displaceable. Such a displacement can theoretically be considered a "rotation" about an infinitely distant "axis of rotation".

[0039] In the presentation of the Fig. 2, Fig. 3 and Fig. 6. The closed area of ​​the intermediate layer 10 is in the locked position. In this state, the closed area completely covers the overlap area. To clarify this fact, see in Fig. The area where the upper passage opening 7 is located is indicated by a dashed line in Figure 6. The closed area of ​​the intermediate layer 10 is, as shown in Figure 6, the area where the upper passage opening 7 is located. Fig. 6, indicated by an arrow, is rotatable or generally movable into a release position. If the closed area of ​​the intermediate layer 10 is moved into the release position, the closed area of ​​the intermediate layer 10 gives the following indication as shown in Fig. 7 the overlap area is at least substantially free. The movement of the closed area of ​​the intermediate layer 10 from the locked position to the released position and back can be accomplished, for example, by means of a handle 12, which is arranged on the intermediate layer 10 and is accessible from the upper layer 5. The handle 12 is only in the Fig. 2 and Fig. 3 shown. In the Fig. 6 and Fig. It is not shown in figure 7. Handle 12 could, for example, be a tab.

[0040] Preferably, the extension of the intermediate layer 10 is similar to the extension of the upper and lower layers 5, 6. In this case, a central through-opening 11 is provided in the intermediate layer 10, which, in the release position, is located in the overlap area and therefore releases the overlap area. However, it is also possible to design the intermediate layer as a wing or the like, which is guided over the overlap area when moving into the locking position and is moved out of the overlap area when moving into the release position. For example, the intermediate layer 10 can be designed as a quarter circle, which is rotatable about the axis of rotation 8.

[0041] To guide the intermediate layer 10 during its movement, a profile 13, hereinafter referred to as the upper profile, is incorporated into the upper layer 5. The upper profile 13 is located in the Fig. 2 and Fig. 3 is marked as such, in Fig. 4 only as the area within which the upper profile 13 runs.

[0042] The upper profile 13 extends over an upper length in the direction of movement. Because the movement of the intermediate layer 10 is a rotational movement about the axis of rotation 8, the upper profile 13 rotates at a radial distance from the axis of rotation 8, at least over an angular range. This angular range is referred to below as the upper angular range. As shown in the illustrations in the Fig. 2, Fig. 3 to Fig. In section 4, the upper profile 13 even rotates completely around the axis of rotation 8. In the case of linear movement, the upper angular region would correspond to an upper length region. If (only) one angular region is formed, it is also possible that several such angular regions exist around the axis of rotation 8, for example, two angular regions, each extending over 90° and arranged diametrically opposite each other with respect to the axis of rotation 8.

[0043] The radial distance is, strictly speaking, a distance range. It extends from a minimum radial distance a1 to a maximum radial distance a2. The upper profile 13 runs radially inward to radially outward from the axis of rotation 8 (or generally transversely to the direction of movement of the intermediate layer 10). The upper profile 13 can, for example, be introduced into the upper layer 5 before the layers 5, 6, and 10 are joined together by embossing the upper layer 5 in a suitable embossing tool.

[0044] In the present case, a profile 14, hereinafter referred to as the lower profile, is also incorporated into the lower layer 6. The lower profile 14 is in the Fig. 2 and Fig. 3 is marked as such, in Fig. 5 only as the area within which the lower profile 14 runs. The lower profile 14 extends over a lower length range in the direction of movement. Due to the fact that the movement of the intermediate layer 10 is a rotational movement about the axis of rotation 8, the lower profile 14, viewed from the axis of rotation 8, rotates at least over an angular range at a radial distance from the axis of rotation 8. This angular range is referred to below as the lower angular range. According to the illustration in the Fig. 2, Fig. 3 and Fig. In section 5, the lower profile 14 even rotates completely around the axis of rotation 8. Viewed from the axis of rotation 8, the lower profile 14 runs radially inwards to radially outwards (or generally transversely to the direction of movement of the intermediate layer 10). The lower angular range corresponds to the aforementioned lower length range. The lower profile 14 can, for example, be introduced into the lower layer 6 by embossing it in a suitable embossing tool before the layers 5, 6, and 10 are joined together.

[0045] It is possible that only the upper profile 13 or only the lower profile 14 is present. However, usually both the upper profile 13 and the lower profile 14 are present. In this case, firstly, the radial distance of the lower profile 14 from the axis of rotation 8 is equal to the radial distance of the upper profile 13 from the axis of rotation 8, or more generally, the upper profile 13 and the lower profile 14 are arranged transversely to the direction of movement in the same position. Furthermore, the upper profile 13 and the lower profile 14 run in the same direction. For example, if – see Fig. 8 - If, at a specific point, viewed radially inwards to radially outwards, or generally perpendicular to the direction of movement, the upper profile 13 curves away from the lower layer 6, the lower profile 14 curves towards the upper layer 5 at this point. The same applies in reverse.

[0046] If the upper and lower profiles 13, 14 are present but do not extend completely around the axis of rotation 8 in the manner of a circular ring, a common angular range still exists over which both the upper and lower angular ranges extend around the axis of rotation 8. In the case of linear motion, this applies analogously to a common length range.

[0047] The intermediate layer 10 is according to the Fig. Profile 15 is also introduced at the same radial distance from the axis of rotation 8, or generally viewed transversely to the direction of movement, at the same positioning in sections 2, 3, and 6 to 8. This profile 15 is referred to below as the middle profile. The middle profile 15 is located in the Fig. 2 and Fig. 3 is marked as such, in the Fig. 6 and Fig. 7 only as the area within which the central profile 15 runs. In this case, the central profile 15 also extends over a complete circular ring. However, it could also extend only over an angular range, hereinafter referred to as the central angular range. The central profile 15 can, for example, be introduced into the intermediate layer 10 before the layers 5, 6, 10 are joined together by embossing the intermediate layer 10 in a suitable embossing tool. In the case of linear movement, the central profile 15 would extend in the direction of movement over at least a central length range.

[0048] The upper profile 13 is - see most clearly Fig. 8 - such that the intermediate layer 10 is aligned with the middle profile 15 in such a way that, when the closed area of ​​the intermediate layer 10 is moved from the release position to the locking position and back, the middle profile 15 is guided by the interaction of the middle profile 15 with the upper profile 13. In particular, the middle profile 15 engages with the upper profile 13 and, conversely, the upper profile 13 also engages with the middle profile 15.

[0049] Similarly, the lower profile 14 is also - see again Fig. 8 - such that the intermediate layer 10 is aligned with the middle profile 15 in such a way that, when the closed area of ​​the intermediate layer 10 is moved, it is guided from the release position to the locking position and back by the interaction of the middle profile 15 with the lower profile 14. In particular, the middle profile 15 engages with the lower profile 14 and, conversely, the lower profile 14 engages with the middle profile 15.

[0050] The interacting profiles 13 and 15 and / or 14 and 15 thus realize a sliding bearing, by which the intermediate layer 10 has exactly one degree of freedom relative to the upper and lower layers 5, 6, namely, it is movable in the direction of movement. Specifically, the intermediate layer 10 is fixed radially and axially relative to the upper and lower layers 5, 6, but rotatable or at least pivotable about the axis of rotation 8.

[0051] Fig. Figure 8 also shows several advantageous embodiments. These embodiments are implemented together in the present case. However, they can be implemented independently of each other.

[0052] One embodiment consists in the upper and / or lower profiles 13, 14 being aligned with the middle profile 15 such that the middle profile 15 rests against the upper and / or lower profiles 13, 14 over a full surface area. Thus, there is not only line contact extending in the direction of movement (in this case, the circumferential direction), but full-surface contact between the profiles 13, 14 and the profile 15. This contact extends both in the direction of movement and perpendicular to it. Another embodiment consists in the middle profile 15 and the upper and / or lower profiles 13, 14 being curved in a wave-like manner when viewed perpendicular to the direction of movement.Another embodiment consists in the middle profile 15 and the upper and / or lower profile 13, 14 forming a profile section with several periods, in particular with more than two complete periods, when viewed transversely to the direction of movement – ​​i.e., from radially inside to radially outside. However, it need not be an integer number of periods. In this case, for example, 2.5 complete periods are formed.

[0053] It is assumed below that the movement of the intermediate layer 10 is a rotational movement about an axis of rotation 8.

[0054] In the embodiments described so far, the central profile 15, viewed from the axis of rotation 8, has an inner section 16 which is arranged exclusively radially within the overlap area (in the case of the embodiment of the intermediate layer 10 with the central through-opening 11, radially within the central through-opening 11). A minimum radial distance a3 of the overlap area or the central through-opening 11 is therefore, as shown in the illustration. Fig. 6 greater than the maximum radial distance a2 of the inner section 16 of the middle profile 15. Preferably, in this case too, the radial distance of the inner section 16 of the middle profile 15 is chosen to be as large as reasonably possible. In particular, the radial distance of the middle profile 15 from the axis of rotation 8 is as shown in Fig. 9 greater than the difference between the radial distance of the overlap area or the central through-opening 11 from the axis of rotation 8 and the radial distance of the central profile 15 from the axis of rotation 8. More precisely, the minimum distance a1 is preferably greater than the difference between the minimum radial distance a3 and the maximum radial distance a2. If the inner section 16 of the central profile 15, viewed from the axis of rotation 8, is arranged exclusively radially within the central through-opening 11, the intermediate layer 10 is preferably relatively stiff and / or coated, in particular with a water-repellent coating.

[0055] Alternatively, it is as shown in Fig. It is possible that the central profile 15 has an outer section 17 which, viewed from the axis of rotation 8, is located exclusively radially outside the overlap area or the central passage opening 11. The minimum radial distance a1 is therefore greater than the maximum radial distance a4 of the overlap area or the central passage opening 11. In this case, preferably the radial distance of the central profile 15 from the axis of rotation 8 is at most 10% greater than the radial distance of the overlap area or the central passage opening 11 from the axis of rotation 8. More precisely, preferably the minimum distance a1 is at most 10% greater than the maximum radial distance a4.

[0056] In the configurations according to the Fig. 8 and Fig. 9 the middle profile 15 has either exclusively the inner or exclusively the outer section 16, 17. According to the illustration in Fig. However, it is also possible that the middle profile 15 has both the inner section 16 and the outer section 17. In this case, viewed from the axis of rotation 8, the inner section 16 is arranged exclusively radially within the overlap area or the middle passage opening 11, and the outer section 17 is arranged exclusively radially outside the overlap area or the middle passage opening 11. The design of Fig. 10 thus combines the designs of Fig. 8 and Fig. 9 together. Since both the inner and outer sections 16, 17 are present, the inner section 16 preferably has several periods, as above in conjunction with Fig. 8 explained. In this case, the outer section 17 preferably has only a single period or a half-period. A half-period is a single wave crest without a subsequent wave trough, or conversely, a single wave trough without a subsequent wave crest.

[0057] Embodiments in which parts of the profiles 13 to 15 are arranged on both sides of the overlap area or the central passage opening 11, viewed transversely to the direction of movement, represent an advantageous embodiment even if the movement of the intermediate layer 10 is a linear movement. In this case, the inner and outer sections 16, 17 constitute a first section 16 and a second section 17 of the central profile 15, which are spaced apart from each other when viewed transversely to the direction of movement, and between which the overlap area or the central passage opening 11 is arranged.

[0058] As already mentioned, the upper layer 5 and the lower layer 6 are fixed relative to each other. For example, the intermediate layer 10 can be positioned as shown in the illustration. Fig. 11 has a recess 18 in the region of the axis of rotation 8. In this case, the upper and lower layers 5, 6 can be connected to each other through the recess 18 in the region of the axis of rotation 8, for example, by gluing or welding. Other types of connection, such as positive locking or press fit, are also possible. Preferably, the upper layer 5 and the lower layer 6 are directly connected to each other. However, it is also possible for the connection to be effected via an intermediate element. Alternatively or additionally, the upper layer 6 and the lower layer 6 can be directly connected to each other at their outer edges, for example, by gluing.

[0059] The upper layer 5 has an upper vent opening 19. Similarly, the lower layer 6 has a lower vent opening 20, and the intermediate layer 10 has a middle vent opening 21. The vent openings 19, 20, and 21 are, for example, located in the Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7, 9 and 10 are recognizable. The vent openings 19, 20, 21 usually have the same radial distance from the axis of rotation 8 or are generally located on a line running in the direction of movement.

[0060] In principle, the upper and lower ventilation openings 19, 20 can be arranged arbitrarily. As shown in the Fig. 2, Fig. 3, Fig. 4 to Fig. As shown in Figure 5, the upper and lower vent openings 19, 20 are usually located approximately diametrically opposite the upper and lower through-openings 7, 9 with respect to the axis of rotation 8. This is in accordance with the illustrations in the Fig. 12 on the one hand and the Fig. 13 and Fig. 14 On the other hand, it is alternatively possible that the upper and lower vent openings 19, 20, viewed around the axis of rotation 8, are at the same angular position or at only slightly offset angular positions. As a rule, however, an angular offset of 30° is not exceeded. If the intermediate layer 10 does not rotate around the axis of rotation 8 but moves linearly, the upper and lower vent openings 19, 20 are usually relatively far from the corresponding through-openings 7, 9. Alternatively, they can be directly above one another or offset from each other in the direction of movement.

[0061] When the closed section of the intermediate layer 10 is in the release position, the central vent opening 21 can be located anywhere. The crucial factor is not the location of the central vent opening when the closed section of the intermediate layer 10 is in the release position, but rather its location when the closed section of the intermediate layer 10 is in the locked position. Therefore, the following explanations assume that the closed section of the intermediate layer 10 is in the locked position.

[0062] If the upper and lower vent openings 19, 20 are directly above each other, the following can be done as shown in the illustration. Fig. 12. The middle vent opening 21 is located directly below the upper vent opening 19 and thus also directly above the lower vent opening 20. In this case, all three vent openings 19, 20, 21 are therefore arranged directly above one another.

[0063] Alternatively, it is as shown in the Fig. 13 and Fig. 14. It is possible that the middle vent opening 21 is offset from the upper and / or lower vent opening 19, 20 – preferably from both vent openings 19, 20. It is particularly preferred if, viewed from the middle vent opening 21 and circumferentially around the axis of rotation 8, the upper and lower vent openings 19, 20 are on the same side. In the case of linear movement of the intermediate layer 10, this corresponds to the fact that, viewed from the middle vent opening 21 in the direction of movement, the upper and lower vent openings 19, 20 are on the same side.

[0064] If the upper and lower vent openings 19, 20, viewed around the axis of rotation 8, are at the same angular position or, more generally, are superimposed, then the angular offset, or more generally, the offset to the upper and lower vent openings 19, 20, is the same. Therefore, the situation follows quite naturally. If the upper and lower vent openings 19, 20, viewed around the axis of rotation 8, have an angular offset relative to each other, or more generally, an offset in the direction of movement, then "lying on the same side" can mean that the upper vent opening 19 is located between the middle and lower vent openings 21, 20.In this case, if the intermediate layer 10 rotates around the axis of rotation 11, the angle from the middle vent 21 via the upper vent 19 to the lower vent 20 is considerably smaller than the angle from the middle vent 21 directly to the lower vent 20. Alternatively, "lying on the same side" can mean that the lower vent 20 is located between the middle and upper vents 21, 19. In this case, if the intermediate layer 10 rotates around the axis of rotation 11, the angle from the middle vent 21 via the lower vent 20 to the upper vent 19 is considerably smaller than the angle from the middle vent 21 directly to the lower vent 19.

[0065] If the middle vent opening 21 is offset from the upper vent opening 19, it must be arranged according to the illustration in the Fig. 13 and Fig. 14 The middle vent opening 21 is commutingly connected to the upper vent opening 19 via an upper vent 22 extending in the direction of movement. The upper vent 22 is formed by the fact that the upper layer 5 and the intermediate layer 10 are spaced apart from each other in the area of ​​the upper vent 22. Similarly, if the middle vent opening 21 is offset from the lower vent opening 20, it is commutingly connected to the lower vent opening 20 via a lower vent 23 extending in the direction of movement. The lower vent 23 is formed by the fact that the lower layer 6 and the intermediate layer 10 are spaced apart from each other in the area of ​​the lower vent 23.

[0066] It is possible that the central vent opening 21 is as shown in Fig. 9 is arranged in the area of ​​the central profile 15. This preferably applies regardless of whether the central profile 15 is arranged completely radially inside the central passage opening 11, completely radially outside the central passage opening 11, or, viewed radially, on both sides of the central passage opening 11. It can also apply if, instead of a rotation of the intermediate layer 10 about the axis of rotation 8, a linear movement of the intermediate layer 10 is realized. The central vent opening 21 can also be arranged outside the central profile 15.

[0067] In any case, in the event of a rotational movement, the upper and lower vent openings 19, 20 are arranged at the same radial distance as the middle vent opening 21, apart from small, practically negligible deviations. In the case of a linear movement of the intermediate layer 10, this corresponds to an arrangement on a line running in the direction of movement.

[0068] The Fig. 12, Fig. 13 to Fig. Figure 14 also shows another preferred design. For according to the Fig. 12, Fig. 13 to Fig.In the upper layer 5, in the area of ​​the upper vent opening 19, the upper layer 5 has a dome-shaped protrusion 24 that curves away from the intermediate layer 10. The protrusion 24 is hereinafter referred to as the upper protrusion. The upper protrusion 24 forms a cavity 25 between the upper layer 5 and the intermediate layer 10 in the area of ​​the upper vent opening 19, hereinafter referred to as the upper cavity. Similarly, alternatively or additionally to the upper protrusion 24, the lower layer 6 can have a dome-shaped protrusion 26 in the area of ​​the lower vent opening 20, which curves away from the intermediate layer 10. The protrusion 26 is hereinafter referred to as the lower protrusion. The lower protrusion 26 forms a cavity 27 between the lower layer 6 and the intermediate layer 10 in the area of ​​the lower vent opening 20, hereinafter referred to as the upper cavity.The cavities 25, 27 can, if necessary, serve as receptacles for substance 2 which would otherwise leak out via the vent openings 19, 20, 21.

[0069] The present invention has many advantages. The greatest advantage is that the intermediate layer 10 can be reliably and repeatedly moved from the release position to the locking position and back. Another major advantage is that thin materials can be used for layers 5, 6, and 10; for example, when using paper for layers 5, 6, and 10, the paper can have a thickness of less than 0.5 mm, sometimes even less than 0.3 mm, and possibly even 0.2 mm or less.

[0070] The above description serves solely to explain the present invention. The scope of protection of the present invention, however, shall be determined exclusively by the accompanying claims. Reference symbol list 1 container 2 Substance 3 rand 4 lids 5, 6, 10 layers 7, 9, 11 passageways 8 axis of rotation 12 Handle 13, 14, 15 Profile 16, 17 sections 18 Exclusion 19, 20, 21 ventilation openings 22, 23 ventilation ducts 24, 26 surveys 25, 27 cavities a1 to a4 radial distances QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] WO 2023 / 083 902 A1 [0003, 0004]

Claims

[1] Lid for a container (1), - wherein the lid has an upper layer (5) and a lower layer (6) arranged below it, - wherein the upper layer (5) and the lower layer (6) are connected to each other so that they are fixed relative to each other, - wherein an upper through-opening (7) is provided in the upper layer (5), - wherein a lower through-opening (9) is provided in the lower layer (6) or the lower layer (6) is prepared for the provision of a lower through-opening (9), - wherein the upper passage opening (7) and the lower passage opening (9) have an overlapping area in which they lie on top of each other, in particular the upper and the lower passage opening (7, 9) are at least substantially congruent, - wherein the lid has an intermediate layer (10) arranged between the upper layer (5) and the lower layer (6), - wherein the intermediate layer (10) is movably mounted relative to the upper layer (5) and the lower layer (6), such that a closed area of ​​the intermediate layer (10) can be moved in one direction of movement from a release position to a locking position and back, - wherein the closed area at least substantially releases the overlapping area in the release position and completely covers it in the locked position, characterized by , - that an upper profile (13) extending transversely to the direction of movement is incorporated into the upper layer (5), which extends over an upper length region in the direction of movement, and / or a lower profile (14) extending transversely to the direction of movement is incorporated into the lower layer (6), which extends over a lower length region in the direction of movement, - that in the case that both the upper profile (13) and the lower profile (14) are placed in the upper position (5) and the lower profile (14) are placed in the lower position (6), the upper profile (13) and the lower profile (14) are arranged in the same position when viewed transversely to the direction of movement, run in the same manner and the upper and lower length regions have a common length region, - that a middle profile (15) is inserted into the intermediate layer (10), which, viewed transversely to the direction of movement, is arranged in the same position as the upper profile (13) and / or the lower profile (14) and extends in the direction of movement at least over a middle length range, - that the upper and / or the lower profile (13, 14) are aligned with the middle profile (15) in such a way that the intermediate layer (10) is guided when pivoting from the release position to the locking position and back by the interaction of the middle profile (15) with the upper profile (13) and / or with the lower profile (14). [2] Lid according to claim 1, characterized by , that the upper and / or the lower profile (13, 14) are aligned with the middle profile (15) in such a way that the middle profile (15) lies flat against the upper and / or the lower profile (13, 14). [3] Lid according to claim 1 or 2, characterized by , that the middle profile (15) and the upper and / or lower profile (13, 14) are undulating. [4] Lid according to claim 1, 2 or 3, characterized by, that the middle profile (15) and the upper and / or the lower profile (13, 14) when viewed transversely to the direction of movement form a profile sequence with several periods, in particular with more than two complete periods. [5] Lid according to any one of claims 1 to 4, characterized by , that the movement of the intermediate layer (10) is a rotational movement about an axis of rotation (8) and that the middle profile (15) has an inner section (16) as seen from the axis of rotation (8) which is arranged exclusively radially within the overlap area. [6] Lid according to claim 5, characterized by , that a radial distance of the inner section (16) from the axis of rotation (8) is greater than the difference of a radial distance of the overlap area from the axis of rotation (8) and the radial distance of the inner section (16) from the axis of rotation (8). [7] Lid according to any one of claims 1 to 6, characterized by, that the movement of the intermediate layer (10) is a rotational movement about an axis of rotation (8) and that the middle profile (15) has an outer section (17) as seen from the axis of rotation (8) which is arranged exclusively radially outside the overlap area. [8] Lid according to claim 7, characterized by , that a radial distance of the outer section (17) from the axis of rotation (8) is at most 10% greater than a radial distance of the overlap area from the axis of rotation (8). [9] Lid according to any one of claims 1 to 8, characterized by, that the movement of the intermediate layer (10) is a rotational movement about an axis of rotation (8), that the intermediate layer (10) has a recess (18) in the area of ​​the axis of rotation (8), and that the upper and lower layers (5, 6) are connected to each other in the area of ​​the axis of rotation (8) through the recess (18), for example by gluing, welding, positive locking, or press fit. [10] Lid according to any one of claims 1 to 4, characterized by , that the movement of the intermediate layer (10) is a linear movement, that the middle profile (15) has a first section (16) and a second section (17) when viewed transversely to the direction of movement, and that the overlap area is arranged between the first and the second section (16, 17) when viewed transversely to the direction of movement. [11] Lid according to any one of the above claims, characterized by, that the upper layer (5) has an upper vent opening (19), the lower layer (6) has a lower vent opening (20) and the intermediate layer (10) has a middle vent opening (21). [12] Lid according to claim 11, characterized by , that when the closed area of ​​the intermediate layer (10) is in the locked position, the upper, lower and middle vent openings (19, 20, 21) are arranged directly above each other. [13] Lid according to claim 11, characterized by, that when the closed area of ​​the intermediate layer (10) is in the locked position, viewed in the direction of movement the middle vent opening (21) has an offset to the upper vent opening (19), but is connected to the upper vent opening (19) via an upper vent channel (22) running in the direction of movement and / or the middle vent opening (21) has an offset to the lower vent opening (20), but is connected to the lower vent opening (20) via a lower vent channel (23) running in the direction of movement. [14] Lid according to claim 13, characterized by , that when the closed area of ​​the intermediate layer (10) is in the locked position, the upper and lower vent openings (19, 20) are on the same side as viewed from the middle vent opening (21) in the direction of movement. [15] Lid according to any one of claims 11 to 14, characterized by , that the upper layer (5) in the area of ​​the upper vent opening (19) has an upper dome-like elevation (24) that curves away from the intermediate layer (10), so that an upper cavity (25) is formed between the upper layer (5) and the intermediate layer (10) in the area of ​​the upper vent opening (19), and / or that the lower layer (6) in the area of ​​the lower vent opening (20) has a lower dome-like elevation (26) that curves away from the intermediate layer (10), so that a lower cavity (27) is formed between the lower layer (6) and the intermediate layer (10) in the area of ​​the lower vent opening (20).

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