Safety locking device

Abstract

The present invention relates to a closure device (100) comprising a closure element (1), a sealing element (20) and a closure cap (30), the closure element (1) comprising a fluid channel (2) having an input opening (3) and an output opening (4), the fluid channel (2) being aligned along a closure axis (50), the closure element (1) comprising a first fastener (5) adapted to fasten the closure element (1) to the fluid channel (2) such that a fill material in a container can be guided through the input opening (3) and into the fluid channel (2). ) is constructed and arranged in such a way that it is connectable with the neck of the container with at least a form-fit or a force-fit, the closure element (1) comprises a receiving arrangement (6) for receiving the sealing element (20), the receiving arrangement (6) comprises a latch nose (7) protruding on the closure shaft (50) or a latch recess directed away from the closure shaft (50) for at least a form-fit or a force-fit connection of the closure element (1) with the closure element (20), and the closure element and the sealing element are connected with a closure device (100). In the sealed state, the sealing element (20) engages with the receiving arrangement (6) and is configured in such a way that the sealing element (20) seals the fluid channel (2) at least liquid-tightly, and in the non-sealed state of the closure device (100), the sealing element (20) disengages from the receiving arrangement (6) and the closure element (1) and the closure cap (30) are configured in such a way that the closure device (100) can be in a closed state in which the closure cap (30) closes the output opening (4) and in an open state in which the output opening (4) is released. and wherein the sealing protrusion (8) is located on at least one of the receiving arrangement (6) and the sealing element (20), and wherein the sealing protrusion (8) is arranged in a sealing region between the receiving arrangement (6) and the sealing element (20) such that in a sealed state of the closure device, the sealing protrusion (8) abuts against the sealing region between the receiving arrangement (6) and the sealing element (20) to at least liquid-tightly seal the fluid channel.

Description

[Technical field]

[0001] The present invention relates to a closure device comprising a closure element, a sealing element and a closure cap, the closure element comprising a fluid channel having an input opening and an output opening, the fluid channel being aligned along a closure axis, the closure element comprising a first fastener, the first fastener being configured and arranged in such a way that the closure element is connectable with at least a form-fit or force-fit with a neck of a container such that a filling material in the container is guideable through the input opening and into the fluid channel, the closure element comprising a receiving arrangement for receiving the sealing element, the receiving arrangement being configured to receive at least a form-fit or force-fit of the closure element with the sealing element. relates to a closure device comprising a latch nose protruding into the closure shaft or a latch recess oriented away from the closure shaft for a press-fit connection, the closure element and the sealing element being configured in such a way that in a sealed state of the closure device the sealing element engages with the receiving arrangement and the sealing element seals the fluid channel at least liquid-tight, and in an unsealed state of the closure device the sealing element disengages from the receiving arrangement, and the closure element and the closure cap are configured and arranged in such a way that the closure device can be in a closed state in which the closure cap closes the output opening and in an open state in which the output opening is released. [Background technology]

[0002] Such a closure element is known from WO 2018 / 034567 A1.

[0003] This type of closure is applied to containers used for transporting and storing pesticides, some of which, if released into the environment in an uncontrolled manner and in excessive amounts, can cause irritation or chemical burns in case of skin contact or have harmful effects on the environment.

[0004] Desirably, the closed systems used to transport and store such chemicals should be constructed in such a way as to minimize the risk of direct user contact with the chemicals or to minimize uncontrolled leakage of the chemicals.

[0005] The closure device mentioned at the beginning allows containers containing pesticides to be closed with some degree of risk-free. To open such a closure device with a sealing element, the user uses an opening connecting piece, which must be used to disengage the sealing element from the closure element, so as to provide even free access to the interior of the container, as explained in WO 2018 / 034567 A1.

[0006] It has been shown that in known closure devices, the connection between the sealing element and the closure element is not tight enough, so that there is a risk that the pesticide may leak out in an uncontrolled manner if the sealing element is still connected to the closure element, even during transportation or storage of the container. Summary of the Invention [Problem to be solved by the invention]

[0007] It is therefore an object of the present invention to provide a closure device which provides a sufficiently tight connection between the closure element and the sealing element. [Means for solving the problem]

[0008] This object is achieved by a closure device as mentioned at the outset.

[0009] According to one embodiment of the present invention, a sealing protrusion is located on at least one of the receiving arrangement and the sealing element, the sealing protrusion being arranged in a sealing area between the receiving arrangement and the sealing element such that in the sealing state of the closure device, the sealing protrusion abuts against the sealing area between the receiving arrangement and the sealing element for at least liquid-tight sealing of the fluid channel. The sealing protrusion can therefore be arranged either on the sealing element or on the receiving arrangement, or on both. In the sealing state, the sealing protrusion extends radially at least in proportion to the closure axis and serves for at least liquid-tight sealing of the container in the sealing state. It has been shown that a closure device comprising a protrusion on the sealing element or on the receiving arrangement, or on both, can provide a tight connection between these two elements, and that a defined pretension should be maintained between the sealing element and the receiving arrangement for sufficient sealing of the closure device. In particular, the sealing protrusion can reduce the surface pressure to a linear distributed load and thus balance the roundness of the sealing element and / or the closure element.

[0010] In the context of the present invention, a sealing area is to be understood as an area where at least two parts abut each other in such a way that it is possible to provide an at least liquid-tight seal of the closure device. In particular, the receiving arrangement and the sealing element abut each other and together with the sealing area form an area that is impermeable to liquids and possibly also to gases.

[0011] According to one embodiment of the invention, the receiving arrangement may be at least partially flexibly formed and the sealing element may be configured in such a way that the sealing protrusion abuts the sealing area under tension in the sealed state of the closure device, so that a defined pretension should be maintained between the sealing element and the receiving arrangement for sufficient sealing of the closure device.

[0012] According to one embodiment of the invention, the sealing element comprises a sealing protrusion, which extends and protrudes away from the closure axis. The sealing protrusion and the receiving arrangement may be arranged in a sealing area of ​​the receiving arrangement such that the sealing protrusion abuts the sealing area of ​​the receiving arrangement in a sealed state of the closure device to at least liquid-tightly seal the fluid channel. Thus, when the sealing protrusion is arranged in the sealing element, in the sealed state the sealing area is in contact with the sealing protrusion. The sealing area of ​​the receiving arrangement is an area in the receiving arrangement whose surface normal extends in the direction of the closure axis, which area is at least impermeable to liquids and possibly also to gases.

[0013] It should be noted that any features, functions, and / or elements described below with reference to a protrusion in a receiving arrangement may equally apply to a protrusion in a sealing element, or vice versa.

[0014] According to one embodiment of the invention, the receiving arrangement is at least partially flexibly formed and the sealing element is configured in such a way that the sealing protrusion on the sealing element extends in the sealed state to an outer radius of the sealing element that is greater than the inner radius of the receiving arrangement, such that the sealing protrusion abuts the receiving arrangement under tension in the sealed state of the closure device. The outer radius of the sealing element is the radius from a surface of the sealing element that extends away from the closure axis. Conversely, the inner radius of the receiving arrangement is the radius from a surface of the receiving arrangement that extends in the direction of the closure axis.

[0015] According to one embodiment of the invention, the receiving arrangement comprises a sealing protrusion axially spaced from the latch nose or the latch recess, the sealing protrusion protruding in the direction of the closure axis, the sealing protrusion and the sealing element being configured in such a way that in the sealed state of the closure device the sealing protrusion abuts against a sealing area of ​​the sealing element in order to at least liquid-tightly seal the fluid channel. In the sealed state, the sealing area of ​​the sealing element is thus in contact with the sealing protrusion. In other words, the sealing protrusion extends radially at least in proportion to the closure axis.

[0016] When a protrusion on the sealing element and a protrusion in the receiving arrangement may be used in combination, the functions, features, and / or elements described with the protrusion on the sealing element and with the protrusion in the receiving arrangement may apply to this combination.

[0017] A sealing projection extending on the closure shaft allows for an effective tightening of the connection between the sealing element and the closure element.

[0018] In the context of the present invention, a closure element is to be understood as a component of a closure device.

[0019] In one embodiment of the closure device according to the invention, the closure element is configured as a cylindrical closure element.

[0020] In one embodiment of the closure device according to the invention, the sealing projection extends over a completely cylindrical casing surface, in other words over a circumferential angle of 360 degrees.

[0021] In one embodiment of the closure device according to the invention, the receiving arrangement comprises a sealing olive, the sealing olive comprising a sealing protrusion, the sealing olive preferably comprising a stem section joining the sealing protrusion in the direction of the output opening, The stem section has a reduced thickness, measured radially relative to the closure axis, compared to the sealing projection, such that the sealing projection is flexibly supported against the latch nose.

[0022] In one embodiment of the closure device according to the invention, the sealing projection has a substantially semicircular cross section, the cross section plane to be considered in this context including the closure axis and an axis extending radially from the closure axis.

[0023] It has been shown that a sufficiently good seal can be produced by a sealing protrusion with a semicircular cross section, while at the same time the manufacture of such a sealing protrusion is particularly simple and inexpensive.

[0024] In one embodiment of the closure device according to the invention, the sealing projection is configured as a sealing lip extending on the closure axis.

[0025] Such a sealing lip, which may in particular be provided with an angled cross section, is particularly flexible and allows for an easy insertion of the sealing element into the closure element during assembly of the closure element and the sealing lip at the same time provides a sufficiently good seal of the connection between the sealing element and the closure element.

[0026] In one embodiment of the closure device according to the invention, the closure element comprises an outer cylinder and an inner cylinder, the inner cylinder having a smaller maximum inner diameter than the outer cylinder, the inner cylinder being at least partially arranged inside a channel area surrounded by the outer cylinder, and the receiving arrangement being arranged in the inner cylinder.

[0027] In one embodiment of the closure device according to the invention, the inner cylinder protrudes from the outer cylinder on the side of the closure element facing the input opening, the inner cylinder is connected to the outer cylinder via a flange extending radially outwardly, the inner cylinder defining the output opening. In this embodiment, the cross-sectional area of ​​the output opening is preferably smaller than the cross-sectional area of ​​the input opening. Such a configuration allows a tight connection of the closure element with the neck of the container.

[0028] In one embodiment of the closure device according to the invention, the inner cylinder comprises a vertical cross section and a tapered section, the vertical cross section having a larger inner diameter than the tapered section, the tapered section being disposed closer to the input opening than the vertical cross section, and the receiving arrangement being at least partially disposed in the tapered section.

[0029] In one embodiment of the closure device according to the invention, the inner cylinder is provided on its outer casing surface with one or more centering protrusions, arranged inside the fluid channel, directed radially away from the closure axis and preferably configured as one or more circumferential rings, which serve to secure the automatically inserted sealing ring against falling off during transport and handling of the closure device, as well as to stabilize said sealing ring during and after application of the closure device to the neck of the container.

[0030] In one embodiment of the closure device according to the invention, the first fastener comprises an internal thread, which allows for an easy and user-friendly connection to the neck of the container.

[0031] In one embodiment of the closure device according to the invention, the first fastener comprises a bayonet element, which allows the formation of a particularly short axial length of the closure element.

[0032] In one embodiment of the closure device according to the invention, the receiving arrangement comprises at least one latch nose protruding into the closure axis, the latch nose extending to a first inner radius and the sealing protrusion extending to a second inner radius, the first inner radius being smaller than the second inner radius.

[0033] In a further alternative embodiment of a closure device according to the present invention, the first inner radius is the same as the second inner radius.

[0034] In one embodiment of the closure device according to the invention, the closure element comprises a second fastener, which is configured and arranged in such a way that the closure element is form-fit or press-fit connectable to the output opening with an opening arrangement configured to separate the sealing element.

[0035] In one embodiment of the closure device according to the invention, the second fastener comprises an additional latch nose extending away from the closure axis or an additional latch recess directed towards the closure axis, which allows for a simple and quick connection of the closure element and the opening arrangement, which is desirable in practice.

[0036] In one embodiment of the closure device according to the invention, the receiving arrangement comprises at least one latch nose extending radially relative to the closure axis, the latch nose of the receiving arrangement and the sealing protrusion being connected to each other via an axially extending wall section, the wall section having a smaller thickness, measured radially relative to the closure axis, than the sealing protrusion, preferably the wall section having a smaller thickness, measured radially relative to the closure axis, than the latch nose. Such a wall section with a reduced wall thickness entails an elastic adjustability of the sealing protrusion, which allows an elastic deformation of the sealing protrusion from an equilibrium position when the sealing protrusion is engaged with the sealing element. This in turn entails a force due to the elastic deformation, which forces the sealing protrusion against the respective sealing area of ​​the sealing element, thereby improving the sealing effect.

[0037] In one embodiment of the closure device according to the invention, the receiving arrangement comprises a latch recess extending radially away from the closure axis, and the latch recess and the sealing projection of the receiving arrangement are connected to each other via an axially extending wall section, the wall section comprising a thickness, measured radially relative to the closure axis, that is smaller than the sealing projection.

[0038] In one embodiment of the closure device according to the invention, in the sealed state of the closure device the sealing element is arranged completely inside the fluid channel.

[0039] In one embodiment of the closure device according to the invention, the receiving arrangement and the sealing element are configured in such a way that, in the sealed state of the closure device, the sealing element engaging with the latch nose or latch recess can only be disengaged from the latch nose or latch recess by axial movement in the direction of the input opening to cause the unsealed state of the closure device.

[0040] In one embodiment of the closure device according to the invention, the latch nose, on the side facing the output opening or on the latch recess facing the input opening, is provided with a contact area extending at an angle greater than 0 degrees and less than 90 degrees to the closure axis, and in the sealed state the sealing element abuts against the contact area.

[0041] In one embodiment of the closure device according to the invention, the imaginary extension of the contact area with the closure axis encloses an angle between 30 and 90 degrees.

[0042] A contact area inclined in such a way relative to the closure axis has been shown to be particularly well suited for latching the closure element and the receiving arrangement if the closure element is to be configured at the same time to be removable in the direction of the input opening: the contact area thus serves as a ramp, via which a correspondingly configured latch element of the closure element can be moved to disengage the closure element from the closure element when a sufficiently high pressure is applied to the closure element in the direction of the input opening.

[0043] In one embodiment of the closure device according to the invention, the receiving arrangement comprises a stop area, against which, in the sealed state, the sealing element abuts or is abuttable, such that movement of the sealing element in the direction of the output opening can prevent conditional separation of the sealing element and the closure element.

[0044] In one embodiment of the closure device according to the invention, the stop area is arranged substantially perpendicular to the closure axis.

[0045] Such a stop region makes it possible that the sealing element can be formed in an easy manner such that it is only movable in the direction of the input opening in order to detach it from the closure element.

[0046] In a further embodiment of the closure device according to the invention, the stop area of ​​the receiving arrangement is arranged at the end of the receiving arrangement closest to the input opening, preferably at the end of the sealing projection closest to the input opening.

[0047] In one embodiment of the closing device according to the invention, an axial portion of the surface normal of the contact area of ​​the latch nose or latch recess is aligned in the direction of the output opening, and an axial portion of the surface normal of the stop area of ​​the receiving arrangement is aligned in the direction of the input opening.

[0048] In one embodiment of the closure device according to the invention, the sealing element comprises a cylindrical sealing region extending over 360°, which sealing region of the sealing element fully abuts against the sealing protrusion of the receiving arrangement in the sealed state for liquid-tight closing of the connecting channel.

[0049] In one embodiment of the closure device according to the invention, the receiving arrangement, the sealing protrusion and the sealing element are arranged in such a way that the sealing element in the sealed state closes the fluid channel in an air-tight manner, this embodiment being particularly advantageous when a container containing a volatile pesticide is to be closed.

[0050] In one embodiment of the closure device according to the invention, the receiving arrangement is at least partially flexibly formed and the sealing element is configured in such a way that the sealing protrusion extends in the sealed state to an inner radius that is larger than one to which the sealing protrusion extends in the non-sealed state, in which case the effect of radially acting forces from material deformation is utilized for a preferably good sealing of the connection between the sealing protrusion and the sealing element.

[0051] In one embodiment of the closure device according to the invention, the sealing element comprises a substantially circular sealing plate and at least one hook element extending from the sealing plate in the direction of the output opening in the sealed state of the closure device, wherein in the sealed state of the closure device the hook element engages with a latch nose or latch recess of the closure element.

[0052] In one embodiment of the closure device according to the invention, the sealing element comprises a number of hook elements extending from the sealing plate in the direction of the output opening and which, in the sealed state, engage with one or more latch noses of the closure element.

[0053] In one embodiment of the closure device according to the invention, the sealing element and the receiving arrangement are configured in such a way that in the sealed state of the closure device a free gap exists between the latch nose of the receiving arrangement, the sealing protrusion and the hook element of the sealing element, which free gap allows the sealing element to be supported with a higher tension and therefore with a higher sealing effect relative to the receiving arrangement.

[0054] In one embodiment of the closure device according to the invention, the hook element comprises a connecting bar and a latch body integrally connected with the connecting bar, the connecting bar being arranged in a portion of the latch body facing away from the output opening, the connecting bar having a smaller thickness, measured radially to the closure axis, compared to the latch body. This configuration involves an elastic flexibility of the hook element which can be used to cause easy latching and unlatching of the hook element and the latch nose, respectively, of the latch recess of the receiving arrangement.

[0055] In one embodiment of the closure device according to the invention, in the closed state, the closure cap is at least partially releasably connected with the closure element such that in the open state, at least a part of the closure cap can be completely separated and thus lost from the remaining part of the closure device. This allows the opening of the output opening without any part of the closure cap remaining on the closure element possibly hindering the insertion of the opening arrangement.

[0056] In one embodiment of the closure device according to the invention, in the closed state of the closure device, the closure cap comprises a cap lid covering the output opening and a cap casing circumferentially connected to the cap lid, the cap casing being inseparably connected to the closure element and the cap lid being connected to the cap casing via a breakable bar in such a way that it can at least be lost.

[0057] In one embodiment of the closure device according to the invention, in the closed state of the closure device the closure cap comprises a bar extending into the output opening, which bar is configured in such a way that in the sealed state of the closure device it at least partially abuts against at least one hook element of the closure element or that when the hook element performs a latching movement the bar abuts against the hook element and the latch nose, respectively the latch recess, such that the bar prevents latching of the hook element and the latch nose, respectively the latch recess.

[0058] In one embodiment of the closure device according to the invention, the hook element disengages from the latch nose or the latch recess via a movement oriented radially relative to the closure axis. Preferably, in this embodiment, the bar of the closure cap extends in the closed and sealed state of the closure device into the fluid channel in such a way that the hook element abuts against the bar of the closure cap, such that disengagement of the hook element from the latch nose or the latch recess is prevented during the movement of the hook element oriented radially relative to the closure axis.

[0059] In one embodiment of the closure device according to the invention, the closure device is suitable for reliably providing a fluid connection between the inside and the outside of the container, the closure device additionally comprising an opening arrangement separable from the closure element, the opening arrangement comprising a connecting element and an inlet defining an injection channel, the connecting element being engageable with the closure element in a form-fit or force-fit manner in order to connect the die opening arrangement with the closure element, the opening arrangement and the closure element being configured in such a way that by engagement of the opening arrangement and the closure element engaging with the inlet a fluid connection can be provided between the inside and the outside of the container via the inlet channel of the opening arrangement, the opening arrangement and the closure element being configured in such a way that when the opening arrangement is connected with the closure element and the output opening is released, the inlet is movable along the closure axis and relative to the connecting element, the opening arrangement, the closure element and the sealing element being configured in such a way that after an axial opening movement of the inlet in the direction of the input opening of the closure element the closure device is in an unsealed state and a fluid connection is provided between the inside and the outside of the container.

[0060] According to one embodiment of the present invention, the sealing element may comprise an outer ring section extending away from the closure axis, the outer ring section may comprise a U-shaped cross section, which partially surrounds the receiving arrangement on the side of the input opening. In other words, the receiving arrangement is insertable into the U-shaped cross section. The end of the receiving section extending in the direction of the input opening is partially surrounded by the U-shaped cross section. The U-shaped cross section may serve for a secure positioning of the receiving arrangement, so that misalignment can be prevented. Furthermore, the sealing properties of the closure device are improved. The U-shaped cross section may also be called a notch or a channel.

[0061] It has been shown that a circumferentially arranged channel or notch at the lower end of the sealing element, the lower end of which extends in the direction of the input opening, provides an improved sealing connection between the sealing element and the receiving arrangement. In particular, the U-shaped cross section of the sealing element may be able to stabilize the part of the closure element that is part of the sealing connection, the receiving arrangement. Thus, the closure element, in particular the receiving arrangement, may be stabilized during assembly of the parts of the closure device. Thus, the closure element may be stabilized during dimensional changes of the sealing element and other parts of the closure device, which may occur due to the expansion of these parts by the liquid contained in the container. The notch may surround, e.g. hold, the receiving arrangement of the closure element in contact with the sealing element, so that the receiving arrangement engages, e.g. latches in, the notch.

[0062] According to one embodiment of the present invention, the first part of the U-shaped cross section may extend from the lower end of the sealing element in a direction away from the closure axis, the second part of the U-shaped cross section may extend along the closure axis in the direction of the outlet opening to partially form a U-shape, and a space may be formed between the first and second parts of the U-shaped cross section for partially accommodating the receiving arrangement on the side of the inlet opening. According to this embodiment, two walls of the U-shaped cross section are described. The third part of the U-shaped cross section may be a wall of the sealing element extending along the closure axis in the direction of the inlet opening. The third part and the second part of the U-shaped cross section may be arranged parallel to each other, in particular parallel to the closure axis. Otherwise, the second and third parts may be arranged at an angle to the closure axis. For example, the second and third parts may be arranged tapered in the direction of the input opening. Thus, the minimum distance between the second and third parts of the U-shaped cross section may be on the first part, and the maximum distance between the second and third parts may be on the opening side of the U-shaped cross section, which is the side in the direction of the output opening.

[0063] According to one embodiment of the present invention, the receiving arrangement comprises a stop area arranged perpendicular to the closure axis, the stop area being arranged at an end of the receiving arrangement, the end extending in the direction of the input opening, the end of the receiving arrangement comprising a first side wall and a second side wall, both of which extend parallel to each other along the closure axis from the stop area in the direction of the output opening.

[0064] According to one embodiment of the invention, the closure device further comprises a first chamfer arranged between the first side wall and the stop area and / or a second chamfer arranged between the second side wall and the stop area, which may be used to limit deformations and / or pressures in the U-shaped cross section so as to provide a better seal.

[0065] Further features, embodiments and advantages of the present invention will be apparent from the drawings as described below. [Brief description of the drawings]

[0066] [Figure 1A] FIG. 1 is a first side view of one embodiment of a closure device according to the present invention. [Figure 1B] FIG. 1B is a second side view of the embodiment of the closure device according to the present invention of FIG. 1A. [Figure 2A] FIG. 1B is a first cross-sectional view of the embodiment of the closure device according to the present invention of FIG. 1A. [Figure 2B] FIG. 1B is a second cross-sectional view of the embodiment of the closure device according to the present invention of FIG. 1A. [Figure 2C] FIG. 1B is a top plan view of the embodiment of a closure device according to the present invention of FIG. 1A. [Diagram 3] FIG. 1B is a detailed view of the receiving arrangement and the sealing element that engages it of the embodiment of FIG. 1A. [Figure 4] FIG. 1B is a perspective view of the embodiment of the closure device according to the present invention of FIG. 1A. [Diagram 5] 3A and 3B are detailed views of an embodiment of a sealing element and a receiving arrangement of a closure device according to the invention. [Figure 6] 3A and 3B are detailed views of an embodiment of a sealing element and a receiving arrangement of a closure device according to the invention. [Figure 7]3A and 3B are detailed views of an embodiment of a sealing element and a receiving arrangement of a closure device according to the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0067] As can be seen from Figures 1A, 1B and 4, the embodiment of the closure device 100 according to the invention as shown comprises a cylindrical closure element 1 having a gripping riffle 40 on its outer surface. In the closed state of the closure device 100 as shown here, the closure element is closed by a closure cap 30, whereby the closure cap 30 is partially removably connected to the closure element 1. The closure cap 30 comprises a substantially circular cap lid 33 with an actuation flap 36 and a cap casing 35, with a number of axially extending bar sections attached to the cap lid and arranged in correspondingly formed recesses of the cap casing 35 in the closed state as shown here. The cap lid 33 and the cap casing 35 are connected to each other via a number of easily tearable bars 34, so that the cap lid 33 can be completely separated from the cap casing 35 by a lever-like movement of the actuation flap 36 in order to put the closure device 100 in the open state, i.e. to release the output opening 4 of the closure element 1.

[0068] Figures 2A and 2B show cross-sectional views of the embodiment of figures 1A and 1B, respectively, whereby the cross-sectional plane includes the closure axis 50 and spatial directions extending radially relative to the closure axis 50, respectively. In figure 2C, the embodiment of figures 2A and 2B is shown in plan view, the cross-section of figure 2A being shown by line B-B51 and the cross-section of figure 2B being shown by line A-A52.

[0069] The closure element shown in Figures 2A and 2B as part of the illustrated closure device 100 according to the invention is composed of an outer cylinder 9 and an inner cylinder 10, the inner cylinder 10 extending partially into the outer cylinder 9. The outer cylinder is provided with a first fastener 5 formed as an internal thread and defines an input opening 3 located at the bottom in this figure. During use of the illustrated closure element 1, the outer cylinder 9 is engaged, for example, with an inlet of a container, not shown here, each of which is provided with an external thread. The inner cylinder 10 joins the outer cylinder 9 in the direction of the output opening 4 defined by the inner cylinder 10 and is connected to the outer cylinder 9 via a flange 16 formed radially relative to the closure axis 50. Below the flange 16, i.e. in the direction of the input opening 3, a tapered portion 12 of the inner cylinder 10 is arranged, which at the same time represents the receiving arrangement 6. In this region, the diameter of the inner cylinder 10 is tapered compared to a vertical section 11 arranged upwards, i.e. aligned in the direction of the output opening 4. The vertical cross section 11 has, in the embodiment shown here, a substantially constant inner diameter which increases only slightly in the vicinity of the output opening 4 .

[0070] In other words, the receiving opening 6 is formed as a shoulder of the inner cylinder 10 extending radially inwards, thereby providing a latch nose 7 extending over a circumferential angle of 360 degrees suitable for receiving the hook element 21 of the sealing element 20. According to the invention, the sealing projection 8 extending radially inwards is formed below this latch nose 7 in such a way that a recess is formed between the latch nose 7 and the sealing projection 8, which recess, in the embodiment shown here, is accompanied by a reduction in the wall thickness of the inner cylinder 10 in the region of the recess. This reduced wall thickness has the effect that the sealing projection 8 formed as part of the sealing olive sealing inwards is provided with a radial mobility, i.e. is elastically adjustable. This improves the sealing properties in cooperation with the sealing element 20 which presses the sealing olive radially outwards. The radial mobility must not be too high or too low in order to achieve an optimum sealing effect.

[0071] A further latch nose arranged directly at the output opening 4 and extending radially outward represents a second fastener 13, which serves to connect the closure element 1 with an opening arrangement not shown here but known from WO 2018 / 034567 A1.

[0072] At the end of the closure element 1 closest to the input opening 3 a flexible, inwardly foldable strap 14 is arranged which interacts with a breakable bar or rather a breakable weakened line to form a tamper-evident ring which is integrally formed with the closure element 1.

[0073] The tamper-evident ring indicates whether the closure element 1 has been previously twisted after it has been initially attached to the inlet of a container, thereby providing an originality guarantee for the closure device 100 comprising the closure element 1.

[0074] Furthermore, centering projections 15 are visible on the outer casing surface of the inner cylinder 10, which is arranged inside the fluid channel 2. They are provided for centering and fixing a sealing ring which is arranged inside the gap formed between the outer cylinder 9 and the inner cylinder 10. The sealing ring serves to seal the connection between the closure element and the neck of the container.

[0075] Furthermore, the centering protrusions 15 may be arranged in the opposite direction as shown in the figure, which means that the centering protrusions 15 may also be arranged on the inner surface of the outer cylinder 9, in particular inside the gap between the outer cylinder 9 and the inner cylinder 10. The centering protrusions may be formed as protrusions extending circumferentially along the cylinder and / or as discontinuous intermittent protrusions.

[0076] 3 shows a concentrated view from the focus window 200 of FIG. 2B of the receiving arrangement 6 and the hook element 21 engaged therewith of the closure element 20. Based on FIG. 3, it can be clearly seen that the receiving arrangement 6 of the closure element 1, which is formed as a tamper-evident section 12 of the inner cylinder 10, in the sealed state of the closure device 100, as shown here, is in contact with the closure element 20 via at least three separation surfaces. The sealing surface 22 of the closure element 20 is in particular in contact with the sealing projection 8 via a full angle of 360°, so that a very tight closure of the fluid channel 2 is guaranteed. In addition, the lower end of the inner cylinder 10 and likewise the lower end of the sealing projection 8 are in contact with the outer ring section 25 of the closure element 20, which is provided with an L-shaped cross section via a stop area 26 that surrounds the sealing projection 8 on the lower side (i.e. on the side of the input opening 3). This engagement prevents that the closure element 20 can be moved in the direction of the output opening 4 in order to separate it from the closure element 1.

[0077] On the opposite side, i.e. in the direction of the output opening 4, a number of hook elements 21 surround the latch nose 7 of the receiving arrangement 6, which is formed as a ring and extends over the entire circumference of the inner cylinder 10, thus preventing undesired disengagement of the sealing element 20 from the closure element 1. The hook elements 21 rest on a contact area 23 of the latch nose 7. In the open state of the closure device 100, the hook elements 21 can be folded radially inwards with the help of an opening arrangement, not shown here, such that they disengage from the latch nose 7 but are engaged with a connecting piece of the opening arrangement. The sealing element 20 can also be moved in the direction of the input opening 3 and separated from the closure element 1 by axial movement of the connecting piece of the opening arrangement in the direction of the input opening 3.

[0078] The engagement of the sealing element 20 with the receiving arrangement 6 in the sealed and closed state as shown in Figures 2A, 2B and 3 can be further strengthened by a bar 32 of the closure cap 30 extending into the output opening 4. This bar 32 is in contact with the hook element 21 via its contact area 24, thereby preventing the hook element 21 from bending radially inwards in the sealed and closed state as shown here, such that bending inwards of the hook element 21 and thus loosening of the sealing element 20 from the closure element 1 is not possible.

[0079] 2A and 2B, the closure cap 30 comprises a sealing olive 31 directed radially outwardly, which provides the tightest possible connection between the closure cap 30 and the closure element 1. In the embodiment as shown here, the closure cap 30 comprises a cap lid 33 detachably connected to a cap casing 35, which is indelibly connected to the closure element 1 via a breakable bar 34, such that the closure cap 30 can be opened by the user by pulling the cap lid 33 away from the closure element 1, thereby releasing the output opening 4.

[0080] As can be seen in Fig. 5, the sealing element 20 comprises a protrusion 8 which extends along the sealing element, in particular which may extend circumferentially along the sealing element. The receiving arrangement 6 abuts against a stop area 26 of the sealing element 20 so as to be able to provide a sealed contact between these two elements. In this embodiment, the sealing element 20 comprises an outer ring section 25 which extends in a direction away from the closure axis 50, the outer ring section 25 comprising an L-shaped cross section. According to another embodiment, the sealing element 20 may comprise more than one protrusion, and the plurality of protrusions, for example at least two protrusions instead of one protrusion, may comprise a radius smaller than the radius of a single protrusion.

[0081] As can be seen in Fig. 6, the protrusion 8 is arranged on the receiving element. It can further be seen that the sealing element 20 comprises an outer ring section 25 extending in a direction away from the closure axis 50, the outer ring section 25 comprising a U-shaped cross section, which U-shaped cross section partially surrounds the receiving arrangement 6 on the side of the input opening 3. A first part 27 of the U-shaped cross section extends from the lower end of the sealing element 20 in a direction away from the closure axis 50, and a second part 28 of the U-shaped cross section extends along the closure axis 50 in the direction of the output opening to partially form a U-shape. Between the first part 27 and the second part 28 of the U-shaped cross section a space 43 is formed to partially accommodate the receiving arrangement 6 on the side of the input opening. The space 43 between the first part 27 and the second part 28 of the U-shaped cross section is sufficiently large to be able to insert the receiving arrangement and sufficiently small to form a snap-fit ​​connection. In FIG. 6 it can be seen that the receiving arrangement 6 comprises a stop area 29 arranged perpendicular to the closure axis, the stop area 29 being arranged at the end of the receiving arrangement, which end extends in the direction of the input opening 3.

[0082] As can be seen in FIG. 6, the receiving arrangement 6 comprises a first chamfer 41 arranged between the first side wall (side wall shown in FIG. 7 below) and the stop area, and / or further comprises a second chamfer 42 arranged between the second side wall and the stop area.

[0083] 7 shows an embodiment of the present invention, in which the end of the receiving arrangement 6 comprises a first side wall 37 and a second side wall 38, both of which extend parallel to each other along the closure axis 50 from the stop area 29 in the direction of the output opening 4. According to this embodiment, a protrusion can be formed either on the receiving arrangement 6 or on the sealing element 20, or the protrusion may be omitted. The receiving arrangement 6 with its first and second side walls extending in parallel may fit exactly into the gap 43 of the U-shaped cross section of the sealing element in such a way that the first side wall 37 may abut against the second part of the U-shaped cross section and the second side wall 38 may abut against the wall of the sealing element 20 forming the third part of the U-shaped cross section.

[0084] Meanwhile, while the invention has been shown and described in detail in the drawings and foregoing description, this illustration and description is by way of example only and is not intended to limit the scope of protection as defined by the claims. The invention is not limited to the disclosed embodiments.

[0085] Variations of the disclosed embodiments will be apparent to those skilled in the art from the drawings, the description, and the appended claims. It should be noted that the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. The mere fact that certain features are claimed in different claims does not exclude their combination. Any reference signs in the claims shall not be construed as limiting the scope of the claims. [Explanation of symbols]

[0086] 1 Closure elements 2. Fluidic Channel 3 Input Aperture 4 Output Aperture 5 First fastener (female thread here) 6 Receiving placement 7 Latch Nose 8 Sealing protrusion 9 Outer Cylinder 10 Inner Cylinder 11 Vertical section 12 Tapered Section 13 Second fastener (here further latch nose) 14 Flex Band 15 Centering protrusion 16 Flange 20 Sealing elements 21 Hook Elements 22 Sealing area 23 Contact area 24 Contact area 25 Ring Section 26 Stop area 27 First part of U-shaped section 28 Second part of U-shaped section 29 Receiving placement stop area 30 Closure Cap 31 Sealed Olive 32 Bar 33 Cap lid 34 Breakable Bar 35 Cap Casing 36 Working flaps 37 First side wall 38 Second Side Wall 40 Grip Riffle 41 First chamfer 42 Second chamfer 43 Space 50 Closed axis 51 Line BB 52 Line AA 100 Closing device 200 Focus Window

Claims

1. A closing device (100) comprising a closing element (1), a sealing element (20), and a closing cap (30), wherein the closing element (1) comprises a fluid channel (2) having an input opening (3) and an output opening (4), the fluid channel (2) is aligned along a closing axis (50), the closing element (1) comprises a first fastener, the first fastener (5) is configured and arranged in such a way that the closing element (1) can be connected to the neck of the container at least in a form - fit or press - fit manner so that the filling material in the container can be guided into the fluid channel (2) through the input opening (3), the closing element (1) comprises a receiving arrangement (6) for receiving the sealing element (20), the receiving arrangement (6) comprises a latch nose (7) protruding from the closing axis (50) or a latch recess directed away from the closing axis (50) for at least a form - fit or press - fit connection of the closing element (1) with the sealing element (20), the closing element and the sealing element are configured in such a way that in the sealed state of the closing device (100), the sealing element (20) engages with the receiving arrangement (6) and the sealing element (20) seals the fluid channel (2) at least in a liquid - tight manner, in the non - sealed state of the closing device (100), the sealing element (20) disengages from the receiving arrangement (6), the closing element (1) and the closing cap (30) are configured and arranged in such a way that the closing device (100) can be in a closed state where the closing cap (30) closes the output opening (4) and can be in an open state where the output opening (4) is released, a sealing protrusion (8) is located on at least one of the receiving arrangement (6) and the sealing element (20), in the sealed state of the closing device, the sealing protrusion (8) is arranged in the sealing region between the receiving arrangement (6) and the sealing element (20) so as to abut against the sealing region between the receiving arrangement (6) and the sealing element (20) in order to seal the fluid channel at least in a liquid - tight manner, the receiving arrangement (6) comprises the sealing protrusion (8) axially spaced from the latch nose (7) or the latch recess, the sealing protrusion (8) protrudes in the direction of the closing axis (50), The sealing projection (8) and the sealing element (20) are configured in such a way that the sealing projection (8) abuts against the sealing region of the sealing element (20) in order to seal the fluid channel (2) at least liquid-tightly in the sealed state of the closing device. The sealing element comprises an outer ring section (25) extending in a direction away from the closing axis (50), and the outer ring section (25) has a U-shaped cross-section. The U-shaped cross-section partially surrounds the receiving arrangement (6) on the side of the input opening (3), a first part (27) of the U-shaped cross-section extends from the lower end of the sealing element (20) in a direction away from the closing axis (50), and a second part (28) of the U-shaped cross-section extends in the direction of the output opening (4) along the closing axis (50) in order to partially form the U-shape. A space (43) is formed between the first part (27) and the second part (28) of the U-shaped cross-section for partially accommodating the receiving arrangement (6) on the side of the input opening. Closing device (100).

2. The closing device (100) according to claim 1, wherein the receiving arrangement (6) is at least partially formed flexibly and the sealing element (20) is configured in such a way that the sealing projection (8) abuts against the sealing region under tension in the sealed state of the closing device. Closing device (100).

3. The closing device (100) according to claim 1, wherein the sealing element (20) comprises the sealing projection (8), the sealing projection (8) extends away from the closing axis (50), and the sealing projection (8) and the receiving arrangement (6) are arranged in the sealing region of the receiving arrangement (6) in such a way that the sealing projection (8) abuts against the sealing region of the receiving arrangement (6) in order to seal the fluid channel (2) at least liquid-tightly in the sealed state of the closing device. Closing device (100).

4. The closing device (100) according to claim 1, wherein the receiving arrangement (6) is at least partially formed flexibly and the sealing element (20) is configured in such a way that the sealing projection (8) extends at an inner radius greater than an inner radius at which the sealing projection (8) extends in the non-sealed state in the sealed state of the closing device so that the sealing projection abuts against the sealing element under tension. Closing device (100).

5. The closing device (100) according to claim 1, wherein the receiving arrangement (6) is at least partially formed flexibly and the sealing element (20) is configured such that the sealing projection (8) in the sealing element (20) extends at an outer radius of the sealing element (20) that is larger than an inner radius of the receiving arrangement (6) in the sealed state of the closing device so that the sealing projection abuts against the receiving arrangement (6) under tension in the sealed state of the closing device. Closing device (100).

6. The closing device (100) according to claim 1, wherein the receiving arrangement (6) comprises at least one latch nose (7) protruding towards the closing axis (50), the latch nose (7) extends at a first inner radius and the sealing projection (8) extends at a second inner radius, the first inner radius being smaller than the second inner radius. Closing device (100).

7. The closing device (100) according to claim 1, wherein the sealing projection extends annularly over a circumferential angle of 360°. Closing device (100).

8. The closing device (100) according to claim 1, wherein one of the latch nose (7) or the latch recess and the other sealing projection (8) are connected to each other via an axially extending wall section, the wall section having a thickness smaller than that of the sealing projection as measured radially with respect to the closing axis (50). Closing device (100).

9. The closing device (100) according to claim 1, wherein the receiving arrangement comprises a sealing olive, the sealing olive comprising the sealing projection and a stem section that joins to the sealing projection axially of the output opening, the stem section having a thickness smaller than that of the sealing projection as measured radially with respect to the closing axis (50). Closing device (100).

10. The closing device (100) according to claim 1, wherein the sealing projection has a substantially semi-circular cross-section. Closing device (100).

11. The closing device (100) according to claim 1, wherein the closing element (1) comprises an outer cylinder (9) and an inner cylinder (10), the inner cylinder (10) having a maximum inner diameter smaller than that of the outer cylinder (9). The inner cylinder (10) is at least partially disposed inside a channel region surrounded by the outer cylinder (9), The receiving arrangement (6) is disposed on the inner cylinder (10), A closing device (100).

12. The closing device (100) according to claim 11, The inner cylinder (10) comprises a vertical section (11) and a tapered section (12), the vertical section (11) having an inner diameter larger than that of the tapered section (12), The tapered section (12) is disposed closer to the input opening (3) than the vertical section (11), The receiving arrangement (6) is at least partially disposed on the tapered section (12), A closing device (100).

13. The closing device (100) according to claim 1, The closing element (1) comprises a second fastener (13), The second fastener is configured and arranged in such a way that the closing element (1) can be connected to the output opening (4) by form fit or press fit by an opening arrangement configured to separate the sealing element (20), A closing device (100).

14. The closing device (100) according to claim 1, The receiving arrangement (6) and the sealing element (20) are configured in such a way that, in the sealed state of the closing device (100), the sealing element engaging with the latching nose (7) or the latching recess can be disengaged from and engaged with the latching nose (7) or the latching recess only via an axial movement in the direction of the input opening (3) in order to achieve the non-sealed state of the closing device (100), A closing device (100).

15. The closing device (100) according to claim 1, The sealing element comprises a substantially circular sealing plate and at least one hook element (21) extending in the direction of the output opening (4) from the sealing plate in the sealed state of the closing device (100), the at least one hook element (21) engaging with the latching nose (7) or the latching recess of the closing element (1) in the sealed state of the closing device (100), A closing device (100).

16. The closing device (100) according to claim 15, The closing cap (30) comprises a bar (32) extending into the output opening (4) in the closed state of the closing device (100), and the bar (32) at least partially abuts or is capable of abutting against at least one hook element (21) of the sealing element (20) in the sealed state of the closing device (100). Closing device (100).

17. The closing device (100) according to claim 1, The receiving arrangement (6) comprises a stop region (29) arranged perpendicular to the closing axis, the stop region (29) being arranged at an end of the receiving arrangement, the end extending in the direction of the input opening (3). The end of the receiving arrangement (6) comprises a first side wall (37) and a second side wall (38), both of which extend parallel to each other along the closing axis (50) from the stop region (29) in the direction of the output opening (4). Closing device (100).

18. The closing device (100) according to claim 17, Further comprising a first chamfer (41) arranged between the first side wall (37) and the stop region, and / or A second chamfer (42) arranged between the second side wall (38) and the stop region. Closing device (100).

19. The closing device (100) according to any one of claims 1 to 18 for reliably providing a fluid connection between the inside and the outside of the container, The closing device (100) comprises an opening arrangement separable from the closing element (1), The opening arrangement comprises a connecting element and an injection port defining an injection channel, The connecting element is engageable with the closing element (1) by form fit or press fit to connect the die opening arrangement to the closing element (1), The opening arrangement and the closing element (1) are configured in such a way that a fluid connection can be provided between the inside and the outside of the container via the injection channel of the opening arrangement by engagement of the opening arrangement and the closing element (1) engaging with the injection port, The opening arrangement and the closing element (1) are configured in such a way that the injection port is movable along the closing axis (50) and relative to the connecting element when the opening arrangement is connected to the closing element (1) and the output opening (4) is released. The opening arrangement, the closing element (1), and the sealing element (20) are configured such that after the axial opening movement of the injection port in the direction of the input opening (3) of the closing element (1), the closing device (100) is in an unsealed state and a fluid connection is provided between the inside and the outside of the container, the sealing element being separated from the closing element (1) and connected to the injection port. Closing device (100).

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