DE102021116173B3 - bayonet lock - Google Patents

Abstract

The present invention relates to a closure device, the closure device comprising a base element, the base element having a pouring channel extending along a closure axis with an inlet opening and a pouring opening, the closure device comprising a closure cap, the closure cap having a cap lid and a peripherally attached to the The cap cover has a subsequent and axially extending cap skirt, the closure cap and the base element being designed and arranged relative to one another in such a way that the closure cap closes the pouring opening when the closure device is in a closed state and releases it when the closure device is in an open state. In order to protect the environment from littering with plastic parts and at the same time to enable a low use of materials, it is proposed according to the invention to design the closure device as a closure device for bayonet-type closure of a container, the closure device comprising an anchor ring and a connecting element, the connecting element comprising the anchor ring with the closure cap connects, the anchor ring being in engagement with the base element both in the closed state and in the open state of the closure device in such a way that the closure cap is also connected to the base element with the connecting element and the anchor ring in the open state.

Description

The present invention relates to a closure device, the closure device comprising a base element, the base element having a pouring channel extending along a closure axis with an inlet opening and a pouring opening, the closure device comprising a closure cap, the closure cap having a cap lid and a peripherally attached to the The cap cover has a subsequent and axially extending cap jacket, the closure cap and the base element being designed and arranged relative to one another in such a way that the closure cap closes the pouring opening when the closure device is in a closed state and releases it when the closure device is in an open state.

Such closure devices usually have an internal thread and a corresponding external thread.

In order to protect the environment from littering with plastic parts, efforts are being made to design closures and containers in such a way that the closure cap remains connected to the container after opening. However, it has been shown that the production of such a closure, which also has an internal and external thread, usually requires a larger quantity of raw materials than comparable closures in which the closure cap can be detached from the container.

Tied closures are known in principle in the prior art, inter alia from the publications US 2019/0 185 233 A1 , DE 93 18 243 U1 , WO 2019/100 015 A1 and EP 3 805 126 A1 .

Against this background, it is an object of the present invention to provide a closure device which protects the environment from littering and which at the same time is not associated with increased material costs.

This object is achieved by a closure device for opening a container in a bayonet-like manner, the closure device comprising a base element, the base element having a pouring channel which extends along a closure axis and having an inlet opening and a pouring opening, the closure device comprising a closure cap, the closure cap having a cap lid and has a cap jacket that adjoins the cap cover on the circumferential side and extends axially, the closure cap and the base element being designed and arranged relative to one another in such a way that the closure cap closes the pouring opening when the closure device is in a closed state and opens it when the closure device is in an open state. According to the invention, the closure device comprises an anchor ring and a connecting element, wherein the connecting element connects the anchor ring to the closure cap, the anchor ring being in engagement with the base element both in the closed state and in the open state of the closure device in such a way that the closure cap is also in the open state is connected to the connecting element and the anchor ring to the base element.

One advantage of a bayonet-like locking device or bayonet lock compared to a lock with an internal thread and a corresponding external thread is that the bayonet lock can be designed to be axially shorter than the threaded lock, since, unlike a thread, the required axial height is not influenced by an absolutely necessary thread pitch. In addition, bayonet locks can be designed in such a way that less material has to be used for their production than for the production of a lock with an external and internal thread, since—in contrast to a thread—one of the two interlocking guide means of a bayonet lock is designed to be considerably shorter when viewed in the circumferential direction can as the opposite means of guidance.

A closure that is suitable for bayonet-like opening is to be understood in the context of the present invention as a closure that does not have an internal thread and a corresponding external thread, but which has a first guide means arranged on the base element, such as a guide rib, a guide channel, a Has a guide tooth or a guide recess and has a second guide means arranged on the cap jacket, the first and the second guide means differing significantly in their circumferential extent. Due to this difference in the circumferential extent, discontinuous movement paths of the guide means are also possible in the mathematical sense during an opening movement, e.g. the combination of a rotary movement running exclusively in the circumferential direction with a subsequent axial movement for lifting the closure cap. In contrast to this, the internal and external threads of a thread always only allow a constant relative movement to one another in the mathematical sense, which must have a constant axial stroke over the entire course of the thread.

In other words, therefore, under a lock that is suitable for bayonet-like opening is to be understood in the sense of the present invention as a closure which has guide means such that with these guide means both closures with continuous in the mathematical sense as well as closures with discontinuous in the mathematical sense movement paths of the guide means can be realized during an opening movement.

In one embodiment of the present invention, the closure cap has a first guiding means, wherein the base element has a second guiding means, the first and the second guiding means being designed and arranged in such a way that at least the first or the second guiding means during an opening rotary movement and before lifting the closure cap follows a mathematically continuous path of movement from the base element.

In one embodiment of the present invention, a guide means arranged on the closure cap is designed to be considerably shorter in the circumferential direction than a further guide means arranged on the base element or a guide means arranged on the base element is considerably shorter in the circumferential direction than a further guide means arranged on the closure cap, the guide means and the further guide means can be brought into and out of engagement with one another in order to selectively close or open the closure device.

In a first alternative of the present invention, the base element has at least one guide channel extending over a first circumferential angle W1, wherein the guide channel, viewed from the inlet opening, has at least one gradient section extending over a second circumferential angle W2 with a plane that is perpendicular to the closure axis to be measured pitch angle y greater than zero increases in the axial direction, the cap jacket of the closure cap having at least one guide tooth protruding radially towards the closure axis.

In a second alternative of the present invention, the cap skirt of the closure cap has at least one guide channel extending over a first circumferential angle W1, wherein the guide channel, viewed from the edge of the cap skirt adjoining the anchor ring, has at least one slope section extending over a second circumferential angle W2 with an opposite a pitch angle y greater than zero to be measured in a plane perpendicular to the breech axis increases in the axial direction, the base element having at least one guide tooth projecting radially away from the breech axis.

In the first and second alternative, the closure device is also designed in such a way that the at least one guide channel and the at least one guide tooth can be brought into engagement with one another by a closing movement or disengaged by an opening rotary movement in order to switch the closure device to the closed state or to the open state to bring open state, and wherein the closure device is designed such that the engagement of guide channel and guide tooth within the slope section causes an axial relative movement between the cap shell and anchor ring during an opening rotary movement or a closing movement.

In a third alternative of the present invention, the base element has at least one guide rib extending over a first circumferential angle W1, wherein the guide rib, viewed from the inlet opening, has at least one slope section extending over a second circumferential angle W2 with a plane that is perpendicular to the closure axis to be measured pitch angle y greater than zero increases in the axial direction, wherein the cap shell of the closure cap has at least one guide recess, wherein two axially spaced and each radially to the closure axis protruding teeth define the guide recess.

In a fourth alternative of the present invention, the cap skirt of the closure cap has at least one guide rib extending over a first circumferential angle W1, wherein the guide rib, viewed from the edge of the cap skirt adjoining the anchor ring, has at least one slope section extending over a second circumferential angle W2 with an opposite a pitch angle y greater than zero to be measured in the axial direction at a plane perpendicular to the breech axis, the base element having at least one guide recess, with two axially spaced teeth each projecting radially away from the breech axis defining the guide recess.

In the third and fourth alternative, the closure device is also designed according to the invention in such a way that the at least one guide rib and the at least one guide recess can be brought into engagement with one another by a closing movement or disengaged by an opening rotary movement in order to selectively move the closure device into the locked To bring sen state or in the open state, wherein the closure device is designed such that the engagement of the guide rib and guide recess within the slope section causes an axial relative movement between the cap shell and anchor ring during an opening rotary movement or a closing movement.

The four alternatives have the advantage that the rotational movement causes the closure cap to be advanced axially relative to the anchor ring. Thus, such bayonet locks can also be used when such an axial feed is required in order to activate a tamper-evident device, such as tearing a tearable web. In the case of the known bayonet closures, tearable webs between the closure cap and the anchor ring can only be torn apart by an axial tensile force from the user, for example, when the guide means of the bayonet closure have been disengaged. In the case of aseptic closures in particular, which have a cutting device for producing a container opening, however, it is desirable for such webs to tear before the closure cap can be lifted off.

For the purposes of the present invention, a guide channel is a channel or channel section in which the corresponding guide tooth that can be used to guide the opening and closing movement can be guided when normal everyday human forces are applied and which runs through it along its entire circumferential extent in the axial direction substantially opposite wall sections is limited. A channel adjoining such a guide channel in the circumferential direction, which is not suitable for further guidance of the guide tooth or is limited axially only on one side, is not part of the guide channel.

A base element is to be understood as meaning any element designed as a counterpart to the closure cap. A base element can be, for example, the neck of a beverage bottle or a pouring spout for cardboard packaging.

If a feature of the present invention can relate to both the guide channel, the guide tooth, the guide rib and the guide recess, the term “guide means” encompassing all of these elements is used.

If an embodiment of the present invention is discussed below without one or more of the four alternatives mentioned being explicitly mentioned in this context, this embodiment can be implemented in each of the four embodiments mentioned.

In an embodiment of the first and second alternative of the present invention, the guide channel is not embodied in a helical shape.

In an embodiment of the third and fourth alternative of the present invention, the guide rib is not helically shaped.

In one embodiment of the first and second alternative of the present invention, the guide channel tapers in the closed state of the closure device viewed from the inlet opening towards its end of the guide channel closest to the pouring opening, so that the guide channel has a tapered channel section and a wider channel section. In one embodiment of the present invention, this taper can be designed in such a way that the tapered channel section has the or a further slope section, the slope of the slope section being designed to correspond to the slope of the guide tooth. This taper can advantageously be used to provide smooth and steeply rising guidance of the closure cap at the pouring opening-side end of the guide channel, so that the closure cap lifts off axially at the end during an opening rotary movement.

In one embodiment of the first and second alternative of the present invention, the guide channel tapers in the closed state of the closure device viewed from the pouring opening towards its end closest to the inlet opening, so that the guide channel has a tapered channel section and a wider channel section. In a further embodiment of the present invention, this taper can also be designed in such a way that the tapered channel section has the or a further slope section, the slope of the slope section being designed to correspond to the slope of the guide tooth. This taper can advantageously be used to provide smooth and steeply rising guidance of the closure cap at the inlet-side end of the guide channel, so that the closure cap lifts off axially at the beginning of an opening rotary movement.

In one embodiment of the first alternative and the second alternative of the present invention, the guide tooth has an axial slope corresponding to the axial slope of the guide channel with the slope angle δ=y.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess has an axial slope corresponding to the axial slope of the guide tooth with the slope angle δ=γ.

Such a design of the guide tooth or the guide recess enables an easy-to-fix engagement of the guide tooth and the guide channel or of the guide recess and the guide rib in the closed state of the closure device.

In one embodiment of the first alternative and the second alternative of the present invention, the guide tooth has an axial pitch δ≢γ that deviates from the axial pitch of the guide channel or no axial pitch δ=0.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess has a pitch δ≢y that deviates from the axial pitch of the guide tooth or no axial pitch δ=0.

Such a design of the guide tooth or the guide recess makes it possible to produce closure devices with very small axial heights.

In an embodiment of the first and second alternative of the present invention, the guide channel has a non-rising channel section without an axial slope and a guide tooth with a slope δ greater than zero.

In one embodiment of the first and second alternative of the present invention, the non-rising channel section has a channel width D to be measured in the axial direction, the guide tooth having a tooth length A to be measured in the direction of extension of the guide tooth and a tooth width B to be measured perpendicular to the direction of extension of the guide tooth has, wherein the guide tooth and the guide channel are designed in such a way that the following equation is satisfied: $$Asin\delta +B\text{cos}\delta \le D.$$

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib has a non-rising rib section without an axial pitch and a guide recess with a pitch δ greater than zero. This dimensioning makes it possible to produce the base element and the closure cap with a small axial height and with a small amount of material, despite the anchor ring.

In the context of the present invention, the direction of extension of a guide channel, a guide rib, a guide tooth or a guide recess is to be understood as meaning that spatial direction in which the respective guide means essentially extends, so that the closure cap is guided along this direction of extension in the course of an opening or closing movement is made possible.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel and the guide tooth are designed in such a way that when the guide tooth is arranged within the slope section or a partial area of the slope section, the closure cap can be lifted off axially without any further rotary movement of the closure cap the locking axis is prevented.

In one embodiment of the third alternative and the fourth alternative of the present invention, the guide rib and the guide recess are designed in such a way that when the guide recess encompasses the sloped section or a partial area of the sloped section, the closure cap is lifted off axially without any further rotary movement of the closure cap about the closure axis is prevented.

In this embodiment, the sloped section is not only used for axial guidance of the closure cap, but also as a closing mechanism at the same time.

In one embodiment of the first alternative and the second alternative of the present invention, two wall sections that are spaced apart axially from one another form a region of the slope section and can be connected by an imaginary connecting line that runs exclusively axially.

This structural design makes it possible in a simple manner for the guide channel to be used both for axial guidance and for fixing the closure cap to the base element.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel has a first stop surface that is closest when viewed from the inlet opening when the closure device is closed and a first stop surface that is further away when viewed from the inlet opening when the closure device is closed second stop surface, wherein in the closed state of the closure device the guide tooth is in contact with the first stop surface via a first contact point and is in contact with the second stop surface via a second contact point in at least one relative circumferential position of guide tooth and guide channel.

In one embodiment of the first alternative and the second alternative of the present invention, in the closed state of the closure device, the guide tooth is in contact with the first stop surface via a first contact point and in contact with via a second contact point at essentially every relative circumferential position of the guide tooth and guide channel the second stop surface.

In one embodiment of the third alternative and the fourth alternative of the present invention, the guide recess has a first stop surface that is closest when viewed from the pouring opening when the closure device is closed and a second stop surface that is further away when viewed from the pouring opening when the closure device is closed, the guide rib in the closed state of the closure device in at least one relative circumferential position of the guide rib and guide recess is in contact with the first stop surface via a first contact point and is in contact with the second stop surface via a second contact point.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib is in the closed state of the locking device in substantially every relative circumferential position of guide rib and guide recess via a first contact point in contact with the first stop surface and via a second contact point in contact with the second stop surface.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel has a first stop surface that is closest when viewed from the inlet opening when the closure device is in the closed state and a second stop surface that is further away when viewed from the input opening when the closure device is closed, the guide tooth in the closed state of the closure device, in at least one relative circumferential position of the guide channel and guide tooth, is in contact with the first stop surface via a first contact point and, as a result of an exclusively axial displacement of the closure cap by a distance s greater than zero, out of contact with the first stop surface and via a second Contact point can be brought into contact with the second abutment surface.

In an embodiment of the first alternative and the second alternative of the present invention, the distance s is greater than zero at each relative circumferential position of the guide tooth and guide channel.

In one embodiment of the third alternative and the fourth alternative of the present invention, the guide recess has a first stop surface that is closest when viewed from the pouring opening when the closure device is closed and a second stop surface that is further away when viewed from the pouring opening when the closure device is closed, the guide rib in the closed state of the closure device, in at least one relative circumferential position of the guide rib and guide recess, is in contact with the first stop surface via a first contact point and, as a result of an exclusively axial displacement of the closure cap by a distance s greater than zero, out of contact with the first stop surface and via a second Contact point can be brought into contact with the second abutment surface.

In an embodiment of the third alternative and the fourth alternative of the present invention, the distance s is greater than zero at each relative circumferential position of the guide rib and the guide recess.

The distance s represents the axial play that exists between the guide means of the closure cap and the guide means of the base element. A small amount of play is advantageous since this enables the user to open and close the closure device more easily.

In one embodiment of the present invention, the distance s is a maximum of 0.8 mm.

In one embodiment of the present invention, the distance s is a maximum of 0.5 mm.

In one embodiment of the present invention, the distance s is a maximum of 0.3 mm.

These maximum values have proven to be particularly advantageous in numerous tests, since on the one hand they enable a sealing closure device and on the other hand allow sufficient play to realize a smooth opening and closing movement.

In an embodiment of the first alternative and the second alternative of the present invention, the guide tooth or, in the case of several guide teeth, all the guide teeth together extend over a circumferential angle of at most 45 degrees.

In an embodiment of the first alternative and the second alternative of the present invention, the guide tooth or, in the case of several guide teeth, all the guide teeth together extend over a circumferential angle of at most 30 degrees.

In an embodiment of the first alternative and the second alternative of the present invention, the guide tooth or, in the case of several guide teeth, all the guide teeth together extend over a circumferential angle of at most 15 degrees.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess or, in the case of several guide recesses, all guide recesses together extend over a circumferential angle of at most 45 degrees.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess or, in the case of several guide recesses, all guide recesses together extend over a circumferential angle of at most 30 degrees.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess or, in the case of several guide recesses, all guide recesses together extend over a circumferential angle of at most 15 degrees.

It has been shown that the value ranges defined by the maximum values mentioned represent an advantageous compromise between the firmness of the engagement of the guide means and the flexibility with regard to the formation of the movement path of the guide means during an opening or closing movement.

In one embodiment of the first alternative and the second alternative of the present invention, the guide tooth or, in the case of multiple guide teeth, all the guide teeth together extend over a circumferential angle of at least 3 degrees.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess or, in the case of several guide recesses, all guide recesses together extend over a circumferential angle of at least 3 degrees.

In an embodiment of the first alternative and the second alternative of the present invention, the guide tooth or the entirety of the guide teeth extends over a circumferential angle of 5 to 10 degrees.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide recess or the entirety of the guide recesses extends over a circumferential angle of 5 to 10 degrees.

This area for the circumferential extent has turned out to be particularly advantageous, since in this way paths of movement of the guide means can be realized which enable the closure cap to be formed with an extremely short axial height.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel has a guide channel width d to be measured perpendicularly to the circumferential direction of extension of the guide channel in the gradient section, with the part of the guide tooth lying within the guide channel when the closure device is closed having a guide channel width to be measured in the circumferential direction maximum circumferential extent a and a maximum axial extent b to be measured axially, the circumferential extent a and the axial extent b being designed in such a way that the following inequality is satisfied: $$a\text{tan}g+b\le \mathrm{i.e}\text{cos}g.$$

In one embodiment of the third alternative and the fourth alternative of the present invention, the guide rib in the gradient section has a rib width d' to be measured perpendicular to the direction in which the guide tooth extends, with the part of the guide recess delimiting the guide rib in the closed state of the locking device in the axial direction being in the circumferential direction has a maximum circumferential extent a' to be measured and a minimum extent to be measured axially, axial extent b', wherein the circumferential extent a' and the axial extent b' are designed in such a way that the following inequality is satisfied: $$b\text{'}-a\text{'}\text{tan}g\ge \mathrm{i.e}\text{'}\text{cos}g.$$

Guide means designed in this way have proven to be particularly advantageous with regard to the sliding friction properties within the gradient section.

In one embodiment of the first alternative and the second alternative of the present invention, the circumferential extent a and the axial extent b are designed in such a way that the following equation is essentially satisfied: $$a\text{tan}g+b=\mathrm{i.e}\text{cos}g.$$

In one embodiment of the third alternative and the fourth alternative of the present invention, the circumferential extent a and the axial extent b are designed in such a way that the following equation is essentially satisfied: $$b\text{'}-a\text{'}\text{tan}g=\mathrm{i.e}\text{'}\text{cos}g.$$

In an embodiment of the first alternative and the second alternative of the present invention, the closure device has a single guide tooth.

In an embodiment of the third alternative and the fourth alternative of the present invention, the closure device has a single guide recess.

These embodiments are associated with a particularly simple and cost-effective manufacturing process.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel and the guide tooth are designed and arranged in such a way that the guide channel and guide tooth overlap over a distance of at least 0.6 mm, measured radially to the closure axis, when the closure device is in the closed state.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel and the guide tooth are designed and arranged in such a way that the guide channel and guide tooth overlap over a distance of at least 0.75 mm, measured radially to the closure axis, when the closure device is in the closed state.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel and the guide tooth are designed and arranged in such a way that the guide channel and guide tooth overlap over a distance of at least 0.8 mm, measured radially to the closure axis, when the closure device is in the closed state.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib and the guide recess are designed and arranged such that they overlap over a distance of at least 0.6 mm, measured radially to the closure axis, when the closure device is closed.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib and the guide recess are designed and arranged such that they overlap over a distance of at least 0.75 mm, measured radially to the closure axis, when the closure device is closed.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib and the guide recess are designed and arranged such that they overlap over a distance of at least 0.8 mm, measured radially to the closure axis, when the closure device is closed.

In one embodiment of the first alternative and the second alternative of the present invention, a guide channel width d to be measured perpendicularly to the direction of extent of the guide channel remains constant over the entire circumferential extent of the guide channel.

In an embodiment of the third alternative and the fourth alternative of the present invention, a rib width d′ to be measured perpendicularly to the extension direction of the guide rib is constant over the entire circumferential extension of the guide rib.

In an embodiment of the first alternative and the second alternative of the present invention, a guide channel width d′ to be measured perpendicularly to the extension direction of the guide channel varies along the circumferential extent of the guide channel. Among other things, this makes it possible to design the guide tooth with a pitch greater than zero and, at the same time, to design the locking device with the smallest possible axial height.

In one embodiment of the first alternative and the second alternative of the present invention, a guide channel width d' to be measured perpendicularly to the direction of extension of the guide channel increases in the closed state Closing device towards the entrance opening down. This enables the guide tooth to jam with the guide channel in the closed state of the closure device.

In an embodiment of the third alternative and the fourth alternative of the present invention, a rib width d′ to be measured perpendicularly to the extension direction of the guide rib varies along the circumferential extension of the guide rib. Among other things, this makes it possible to form the guide recess with a slope greater than zero and at the same time form guide rib sections without a slope or with a slight slope, the rib width of which must be less than the width of the recess perpendicular to the direction of extent.

In one embodiment of the third alternative and the fourth alternative of the present invention, a rib width d' to be measured perpendicularly to the direction of extension of the guide rib increases in the closed state of the closure device in the direction of the inlet opening. This enables the guide rib to be jammed in the guide recess when the closure device is in the closed state.

In an embodiment of the present invention, the first circumferential angle W1 is less than 400 degrees.

In one embodiment of the present invention, the first circumferential angle W1 is less than 380 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is less than 360 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is less than or equal to 355 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is less than or equal to 270 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is less than or equal to 180 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is greater than or equal to 100 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is greater than or equal to 180 degrees.

In an embodiment of the present invention, the first circumferential angle W1 is greater than or equal to 300 degrees.

In one embodiment of the present invention, the second circumferential angle W2 is at least 10 degrees.

In one embodiment of the present invention, the second circumferential angle W2 is at least 30 degrees.

In one embodiment of the present invention, the second circumferential angle W2 is at least 180 degrees.

In one embodiment of the present invention, the second circumferential angle W2 is between 10 and 40 degrees.

In one embodiment of the present invention, the second circumferential angle is between 180 and 360 degrees.

In one embodiment of the present invention, the pitch angle y is between 1 and 10 degrees.

In one embodiment of the present invention, the pitch angle y is between 20 and 60 degrees.

In one embodiment of the present invention, the pitch angle y is between 30 and 45 degrees.

In one embodiment of the present invention, the gradient angle varies within the gradient section in a value range of 1 degree and 45 degrees.

In one embodiment of the present invention, the gradient angle varies within the gradient section in a value range of 1 degree and 30 degrees.

In one embodiment of the present invention, the gradient angle varies within the gradient section in a value range of 1 degree and 20 degrees.

In an embodiment of the present invention, the slope portion extends such that the first circumferential angle W1 is equal to the second circumferential angle W2.

In an embodiment of the first alternative and the second alternative of the present invention, the at least one slope section or several slope sections are of such a type formed so that the guide channel increases axially at least by a guide channel width to be measured perpendicularly to the direction in which the guide channel extends.

In one embodiment of the third alternative and the fourth alternative of the present invention, the at least one slope section or several slope sections are designed in such a way that the guide rib increases by at least the sum of a rib width to be measured perpendicular to the direction of extent of the guide recess and a width perpendicular to the direction of extent of the guide recess measuring tooth width of the teeth forming the guide recess, if the teeth have the same tooth width, or that tooth whose tooth width is larger, if the teeth have different tooth widths, increases axially.

In one embodiment of the first alternative and the second alternative of the present invention, the at least one slope section or several slope sections are designed in such a way that the guide channel increases axially essentially overall by the amount of a guide channel width to be measured perpendicular to the direction of extension of the guide channel.

In an embodiment of the third alternative and the fourth alternative of the present invention, the at least one slope section or several slope sections are designed in such a way that the guide rib increases axially essentially overall by the amount of a rib width to be measured perpendicular to the direction of extension of the guide tooth.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel rises axially by a total of at least 0.5 mm and at most 2.5 mm in all existing gradient sections.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel rises axially by a total of at least 0.8 mm and at most 2.0 mm in all existing gradient sections.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib rises axially by a total of at least 0.5 mm and at most 2.5 mm in all existing gradient sections.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib rises axially by a total of at least 0.8 mm and at most 2.0 mm in all existing gradient sections.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel rises axially by 1.8 mm to 2.2 mm over a circumferential angle of essentially 360 degrees.

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib rises axially by 1.8 mm to 2.2 mm over a circumferential angle of essentially 360 degrees.

In one embodiment of the present invention, the pitch angle is constant within the pitch section.

In one embodiment of the present invention, the pitch angle varies within the pitch section.

In one embodiment of the present invention, the ascending section comprises a leading section with a constant ascending angle γ1 and an opening section adjoining it in the opening rotation direction with a constant ascending angle y2 not equal to y1, wherein the ascending angle y2 is greater than the ascending angle γ1.

In one embodiment of the present invention, the ascending section comprises a leading section with a constant ascending angle γ1 and an opening section adjoining it in the opening rotation direction with a constant ascending angle y2 unequal to y1, wherein the ascending angle γ1 is greater than the ascending angle y2.

In an embodiment of the first alternative and the second alternative of the present invention, at least two slope sections are provided, which are separated from one another by a guide channel section with a slope angle equal to zero.

In an embodiment of the third alternative and the fourth alternative of the present invention, at least two pitch sections are provided, which are separated from one another by a guide rib section with a pitch angle equal to zero.

In an embodiment of the first alternative and the second alternative of the present invention, the guide channel has a first slope section at its peripheral end closest to the inlet opening and preferably have a second slope section at the peripheral end closest to the exit opening,

In an embodiment of the third alternative and the fourth alternative of the present invention, the guide rib has a first slope section at its circumferential end nearest the inlet opening and preferably a second slope section at the circumferential end nearest the outlet opening.

In one embodiment of the first alternative and the second alternative of the present invention, the guide channel and the guide tooth are designed and arranged in relation to one another in such a way that when the closure cap is opened for the first time by 40 degrees or less, at least at one circumferential position of the closure cap, an axial lifting movement of the closure cap occurs relative to the Anchor ring of at least 0.5 mm, preferably at least 0.75 mm and more preferably at least 1 mm is done.

In one embodiment of the third alternative and the fourth alternative of the present invention, the guide rib and the guide recess are designed and arranged relative to one another in such a way that when the closure cap is opened for the first time by 40 degrees or less, at least at one circumferential position of the closure cap, there is an axial lifting movement of the closure cap relative to the Anchor ring of at least 0.5 mm, preferably at least 0.75 mm and more preferably at least 1 mm is done.

In one embodiment of the present invention, a tearable web is arranged between the anchor ring and the closure cap or between the anchor ring and a guarantee ring at the at least one rotational angle position.

In one embodiment of the first alternative and the third alternative of the present invention, the base element has a stop element, the stop element being designed and arranged in such a way that it only comes into contact with the guide tooth of the first alternative or a tooth forming the guide recess of the third alternative comes into contact when the closure cap can be lifted off or pivoted axially in relation to the anchor ring without a further rotary movement of the closure cap about the closure axis being necessary to release the pouring opening.

In an embodiment of the second alternative and the fourth alternative of the present invention, the cap skirt has a stop element, the stop element being designed and arranged in such a way that it only comes into contact with the guide tooth of the second alternative or a tooth forming the guide recess of the fourth alternative comes into contact when the closure cap can be lifted off or pivoted axially relative to the anchor ring, without a further rotary movement of the closure cap around the closure cap being necessary to release the pouring opening.

In one embodiment of the present invention, the closure device comprises a guarantee ring in addition to the anchor ring, the guarantee ring being connected to the anchor ring via easily tearable webs, the closure device being designed in such a way that the easily tearable webs tear when the closure device is opened for the first time, so that the guarantee ring detaches completely from the anchor ring.

In one embodiment of the present invention, the closure device comprises a cutting device which is arranged at least in sections within the pouring channel and has a cutting element, the closure cap comprising a driver device, the driver device and the cutting device being designed and arranged in such a way that turning the closure cap for the first time in an opening direction of rotation results in a Causes movement of the cutting element from a starting position of the cutting element in a direction pointing from the pouring opening to the inlet opening, so that the cutting element can be moved at least in sections through the inlet opening.

In one embodiment of the present invention, the closure device has a tamper-evident device, wherein the tamper-evident device provides a first visual or tactile indication in a first state and a second visual or tactile indication that can be distinguished from the first indication, wherein the closure device is designed in such a way that the tamper-evident device changes from the first state to the second state at an angle of rotation D1 during a first-time opening rotary movement, with the angle of rotation D1 being measured starting from a zero point of the angle of rotation D0.

In one embodiment of the present invention, after changing the tamper-evident device from the first state to the second state at a rotation angle D2, the cutting element moves through the inlet for the first time passage opening () out of the pouring channel, so that the angle of rotation D2 is greater than the angle of rotation D1, with both angles of rotation D1 and D2 being measured from the same zero point of rotation angle D0.

In one embodiment of the present invention, the angle of rotation D2 is at least 10 degrees greater than the angle of rotation D1.

In one embodiment of the present invention, the angle of rotation D2 is at least 20 degrees greater than the angle of rotation D1.

In one embodiment of the present invention, the angle of rotation D2 is greater than the angle of rotation D1 by no more than 60 degrees.

In one embodiment of the present invention, the tamper-evident device comprises an additional guarantee ring connected to the anchor ring via at least one easily tearable bar, the at least one easily tearable bar between anchor ring and guarantee ring being intact in the first state of the tamper-evident device and torn in the second state of the tamper-evident device is.

In one embodiment of the present invention, the tamper-evident feature comprises at least one easily tearable web between the anchor ring and the cap skirt of the closure cap, the at least one easily tearable web between anchor ring and cap skirt being intact in the first state of the tamper-evident device and torn in the second state of the tamper-evident device is.

In one embodiment of the present invention, the at least one slope section is designed in such a way and is arranged at least in sections in a rotation angle range between D0 and D1, so that when the rotation angle D1 is reached by the axial guidance of the closure cap along the slope section during an initial opening rotary movement, the at least one tearable web between Anchor ring and cap skirt tears.

In one embodiment of the present invention, the closure device is designed in such a way that during an opening rotary movement, first the at least one tearable web between the anchor ring and the guarantee ring tears, and then a tearable web between the anchor ring and the closure cap.

In one embodiment of the present invention, the closure cap has an annular sealing ring that protrudes into the pouring opening in the closed state of the closure device and that rests against an inner surface of the pouring channel, the sealing ring having a circumferential sealing projection that projects radially from the closure axis, wherein in the closed State of the closure device, the relative axial position of the sealing projection with respect to the pouring channel at a first circumferential position differs from the relative axial position of the sealing projection with respect to the pouring channel at a second circumferential position.

In an embodiment of the first alternative and the second alternative of the present invention, the sealing protrusion is located further away from the cap lid at a peripheral position of the lead tooth than at a peripheral position of the connecting member.

In an embodiment of the third alternative and the fourth alternative of the present invention, the sealing projection is arranged farther from the cap lid at a peripheral position of the guide recess than at a peripheral position of the connecting member.

In one embodiment of the present invention, the axial extent of the sealing ring varies in the circumferential direction. This enables a particularly simple realization of a sealing projection with a varying axial position.

In one embodiment of the present invention, the sealing projection is arranged on the axial end of the sealing ring facing away from the cap lid.

According to the invention, the closure cap has a first guiding means such as a guiding channel, a guiding rib, a guiding tooth or a guiding recess, the base element having a second guiding means, the first guiding means and the second guiding means being engageable with one another and disengageable around the closure device selectively to close or open, wherein the first and the second guide means are designed in such a way that a rotational movement of the closure cap relative to the base element in the circumferential direction is absolutely necessary for disengaging the guide means and for bringing the guide means into engagement it is not necessary for the closure cap to rotate relative to the base element.

In one embodiment of the first alternative and the second alternative of the present invention, the closure device has a reclosing device, the reclosing closing device is designed and arranged in such a way that a rotary movement of the closure cap relative to the base element in the circumferential direction is absolutely necessary for disengaging the guide tooth and guide channel from the closed state and at least for some of the possible relative positions of the closure cap and base element relative to each other for bringing the guide tooth and guide channel into engagement, an axial relative movement of the base element and the closure cap is sufficient without movement components in the circumferential direction.

In an embodiment of the third alternative and the fourth alternative of the present invention, the closure device has a reclosing device, the reclosing device being designed and arranged in such a way that, for disengaging the guide recess and guide rib from the closed state, there is a relative to the base element rotational movement of the closure cap in the circumferential direction is absolutely necessary and an axial relative movement of the base element and closure cap without movement components in the circumferential direction is sufficient for at least some of the possible relative positions of the closure cap and base element to one another for bringing the guide recess and guide rib into engagement.

In one embodiment of the first alternative of the present invention, the reclosing device comprises a circumferentially extending ring section, which at least partially defines the axial boundary of the guide channel closest to the pouring opening in the closed state of the closure device, wherein the ring section has a radially increasing insertion bevel when viewed from the pouring opening , wherein the insertion bevel is designed such that, starting from the open state of the closure device, the guide tooth can be moved over the insertion bevel in the direction of the inlet opening in order to engage with the guide channel.

In one embodiment of the second alternative of the present invention, the reclosing device comprises a circumferentially extending ring section, which at least partially defines the axial boundary of the guide channel closest to the inlet opening when the closure device is in the closed state, wherein the ring section has a radially increasing insertion bevel when viewed from the inlet opening , wherein the insertion bevel is designed such that, starting from the open state of the closure device, the insertion bevel can be moved over the guide tooth in the direction of the inlet opening in order to bring about an engagement of the guide channel and the guide tooth.

In one embodiment of the third alternative of the present invention, the reclosing device comprises the tooth that defines the guide recess and is closest to the inlet opening when the closure device is in the closed state, the tooth having an insertion bevel that increases radially when viewed from the inlet opening, the insertion bevel being designed in such a way that starting from the open state of the closure device, the tooth can be moved over the insertion slope in the direction of the entry opening in order to engage with the guide rib.

In one embodiment of the fourth alternative of the present invention, the reclosing device comprises the tooth that defines the guide recess and is closest to the pouring opening in the closed state of the closure device, with this tooth having an insertion bevel that increases radially when viewed from the pouring opening, the insertion bevel being designed in such a way that the Guide rib is movable over the insertion slope in the direction of the input opening to cause engagement of the guide rib and guide recess.

This makes it possible to design the closure device in such a way that it can be closed in any relative position of the closure cap and base element by simply pressing down the closure cap axially. A rotary movement is therefore not absolutely necessary for closing the closure device in this embodiment.

In one embodiment of the present invention, a latching element is arranged in or directly on the slope section, with the latching element in the first and second alternative engaging with the guide tooth during an opening rotary movement or during a closing rotary movement, thereby making further opening rotary movement more difficult, but not preventing it.

In one embodiment of the present invention, before the closure device is opened for the first time, the closure cap is connected to the anchor ring exclusively via the connecting element.

In one embodiment of the present invention, the connecting element is a hinge element, so that after the closure device is opened for the first time, the closure cap rotates by an essentially perpendicular to the closure sachse aligned pivot axis relative to the anchor ring is pivotable.

• 1: eine erste Ausführungsform der erfindungsgemäßen Verschlussvorrichtung im verschlossenen Zustand in einer perspektivischen Ansicht,
• 2: die erste Ausführungsform aus 1 in einem halbgeöffneten Zustand in einer Seitenansicht,
• 3: die erste Ausführungsform aus 1 im geöffneten Zustand in einer perspektivischen Ansicht,
• 4: eine Schnittansicht der ersten Ausführungsform aus 1 im verschlossenen Zustand vor einem erstmaligen Öffnen,
• 5: eine Schnittansicht der ersten Ausführungsform aus 1 im verschlossenen Zustand nach einem erstmaligen Öffnen,
• 6: eine perspektivische Ansicht des Basiselements der ersten Ausführungsform aus 1,
• 7: eine perspektivische Ansicht der Verschlusskappe der ersten Ausführungsform aus 1,
• 8: eine angeschnittene Seitenansicht der Verschlusskappe der ersten Ausführungsform aus 1,
• 9: eine zweite Ausführungsform der erfindungsgemäßen Verschlussvorrichtung im verschlossenen Zustand in einer perspektivischen Ansicht,
• 10: die zweite Ausführungsform aus 9 in einem halbgeöffneten Zustand in einer Seitenansicht,
• 11: die zweite Ausführungsform aus 9 im geöffneten Zustand in einer perspektivischen Ansicht,
• 12: eine Schnittansicht der zweiten Ausführungsform aus 9 im verschlossenen Zustand vor einem erstmaligen Öffnen,
• 13: eine Schnittansicht der zweiten Ausführungsform aus 9 im verschlossenen Zustand nach einem erstmaligen Öffnen,
• 14: eine perspektivische Ansicht des Basiselements der zweiten Ausführungsform aus 9,
• 15: eine perspektivische Ansicht der Verschlusskappe der zweiten Ausführungsform aus 9,
• 16: eine angeschnittene Seitenansicht der Verschlusskappe der zweiten Ausführungsform aus 9,
• 17: eine Schnittansicht der Verschlusskappe der zweiten Ausführungsform aus 9.

Further features, embodiments and advantages of the present invention are described with reference to the following figures. Show it:

• 1 : a first embodiment of the closure device according to the invention in the closed state in a perspective view,
• 2 : the first embodiment off 1 in a half-opened state in a side view,
• 3 : the first embodiment off 1 in the open state in a perspective view,
• 4 : a sectional view of the first embodiment 1 in the closed state before opening for the first time,
• 5 : a sectional view of the first embodiment 1 in the closed state after opening for the first time,
• 6 : a perspective view of the base element of the first embodiment 1 ,
• 7 : a perspective view of the closure cap of the first embodiment 1 ,
• 8th Fig. 1 shows a sectional side view of the closure cap of the first embodiment 1 ,
• 9 : a second embodiment of the closure device according to the invention in the closed state in a perspective view,
• 10 : the second embodiment off 9 in a half-opened state in a side view,
• 11 : the second embodiment off 9 in the open state in a perspective view,
• 12 : a sectional view of the second embodiment 9 in the closed state before opening for the first time,
• 13 : a sectional view of the second embodiment 9 in the closed state after opening for the first time,
• 14 : a perspective view of the base element of the second embodiment 9 ,
• 15 : a perspective view of the closure cap of the second embodiment 9 ,
• 16 FIG. 1: a sectional side view of the closure cap of the second embodiment 9 ,
• 17 : a sectional view of the closure cap of the second embodiment 9 .

A first embodiment of the closure device 1 of the present invention comprises as shown in FIG 1 a closure cap 6 with a cap cover 7 and a cap jacket 8 is shown. The closure cap 6 is connected to an anchor ring 9 via a hinge element 10 . The lower edge of the anchor ring 9 is in turn connected to a guarantee ring 24 via easily tearable webs 23 . In the embodiment shown here, tearable webs 23 are also arranged between the anchor ring and the closure cap. Both the tearable webs 23 and the guarantee ring 24 are part of a tamper-evident device 22. In an alternative embodiment, no tearable webs 23 are arranged between the anchor ring and the closure cap (not shown).

In 1 the shown embodiment of the closure device 1 is shown in a closed state before it is opened for the first time. The tearable webs 23 are therefore still intact. This embodiment is also an aseptic closure device 1 with a cutting device 25 having a plurality of cutting elements 26. The cutting elements 26 are arranged on a cutting ring and in practice pierce a cardboard packaging arranged below the closure device when the closure device 1 is opened for the first time. In the initially closed state shown, the cutting elements 16 have not yet been moved out of the inlet opening 4 .

The sealing cap 6 is as in 1 shown placed on a base element 2 in the closed state of the closure device. The base element 2 has a fastening flange, via which it can be connected to a cardboard packaging in a materially bonded manner. This connection can be realized, for example, by ultrasonic welding.

Will the in 1 If the closure device 1 shown is initially opened by a rotary movement, the guarantee ring 24 engages with the locking projections 33 located on the base element 2 and is thus prevented from further rotational movement together with the anchor ring 9 and the closure cap 6, so that the shear forces arising from this engagement between the guarantee ring 24 and anchor ring 9 tear the tearable webs 23 at the latest after a first rotation of the closure cap 6 by ten degrees.

After an initial rotation through an angle of rotation of about 280 degrees, the cutting elements 26 are in the 1 until 8th shown embodiment moved out of the inlet opening 4 and the cap 6 has been automatically raised by the special design of the guide means of this embodiment. The resulting state is in 2 shown.

As soon as the closure device 1 is in the in 2 is in the state shown, a user can pivot the closure cap 6 in the axial direction and thereby release the pouring opening 5, so that a filling of a container equipped with the closure device 1 can be removed from the container via the pouring channel 3.

In. 3 the guide means of the embodiment shown here are clearly visible. This is an embodiment of the first alternative, in which the base element 2 has a guide channel 11 and the closure cap 6 has a guide tooth 13 . In this case, the guide channel 11 has a slope section 12 which extends over the entire guide channel 11, so that the first circumferential angle W1 is equal to the second circumferential angle W2 and has a constant slope angle. In other words, this is a uniformly rising guide channel.

The sectional views of 4 and the 5 show the interior of the closure device 1 in the unopened state ( 4 ) and after opening the closure device 1 for the first time ( 5 ). The two driver webs 27 present each come into engagement with a guide cam of the cutting device 25 during the first opening rotary movement. The cutting device 25 has a cutting ring with four blade-like cutting elements 26 . Through the engagement of the driver bar 27 and the guide cam, the cutting ring is set into a combined translational and rotational movement when the driver bar 27 rotates beyond the point of engagement, so that it rotates out of the inlet opening 4 . When the closure device 1 is placed on cardboard packaging, this movement of the cutting ring pierces or cuts the cardboard packaging or a specially designed seal of the cardboard packaging in the area of the entrance opening, so that an opening to the contents of the cardboard packaging is created.

The pouring opening can as in the 4 and 5 be closed by the cap 6 shown. In the closed state, a sealing ring 28 arranged on the cap cover 7 nestles against the inner surface of the pouring channel 3 in order to close the pouring opening 5 in a liquid-tight manner. The sealing ring 28 can be designed with a radially projecting sealing projection 29, the relative axial position of the sealing projection 29 to the cap cover 7 varying along the circumferential direction in order to produce an advantageous seal. The seal ring 28 of the first embodiment corresponds to the seal ring 28 of the second embodiment. The latter is in detail in 17 shown. There it can be seen that the axial extension of the sealing ring 28 in the area of the connecting element 10 designed as a hinge is essentially half the size of the axial extension of the sealing ring 28 in the area of the guide tooth. The sealing projection 29 is arranged circumferentially at the end of the sealing ring closest to the inlet opening in the closed state, ie over a complete circumferential angle of 360 degrees, so that the axial position of the sealing projection also varies according to the axial extent of the sealing ring.

In 6 the base element 2 of the first embodiment is shown on its own. In particular, the locking projections 33 can be seen, which engage with the anti-tamper ring 24 during a first opening rotary movement, so that after the first ten degrees of rotation of the elements that have been rotating together until then, the closure cap 6, anchor ring 9 and anti-tamper ring 24 break the webs 23 between the anchor ring and tear apart the guarantee ring. This representation also clearly shows that the guide channel 11 is formed by a radially outwardly protruding rib, which runs circumferentially with a constant gradient and at its end closest to the inlet opening 4 converges with a retaining ring 34 running perpendicularly to the closure axis.

The retaining ring 34 is used to hold the anchor ring 9 on the base element 2, so that an axial movement of the anchor ring 9 in the direction of the pouring opening is limited.

By definition, the guide channel 11 only extends as far as the guide tooth 13 of the closure cap 6 can also be guided within the channel formed by the rib. The channel narrowed by the rib and the retaining ring 34 in the lower end section is therefore not part of the guide channel 11 if the guide tooth 13 of the closure cap 6 can no longer be guided in this channel with everyday use of force.

The formation of the guide tooth 13 is in 7 and 8th shown. In the embodiment shown here, the guide tooth 13 and the guide channel 11 have the same slope, so that it is particularly easy for the user to move the guide tooth 13 within the guide channel 11 .

At the in the 1 until 8th In the embodiment shown, the anchor ring 9 has flat holding tabs that can be folded over in the axial direction and that can be brought into engagement with the holding ring 34 of the base element 2 in the folded position in order to hold the anchor ring 9 on the base element 2 . Alternatively, but also - as in the 9 until 16 shown second embodiment - be provided radially aligned to the closure axis projections.

In the 9 until 16 a second embodiment of the invention is shown. In the following, only the differences from the first embodiment will be discussed. Unless otherwise described, the second embodiment is designed in accordance with the first embodiment.

In contrast to the first embodiment, the second embodiment - as in 9 recognizable - no additional guarantee ring 24 on. In the second embodiment, the tamper-proof feature is realized by tearable webs 23 which are arranged between the anchor ring 9 and the closure cap 6 .

The omission of the guarantee ring 24 is supported by the in 11 and 14 recognizable discontinuous formation of the guide channel 11 allows. In the second embodiment, the webs 23 of the tamper-evident device 22 already tear within the first 30 to 40 degrees of rotation angle, without shearing forces between the closure cap 6 and the anchor ring 9 having to be exploited by an engagement of latching projections. At a rotation angle of approx. 30 to 40 degrees, the cutting ring 26 has not yet moved out of the entry opening, so that the tamper-evident device guarantees that, if the webs 23 are not torn, the contents of the packaging have not been contaminated by accidental or intentional cutting into the cardboard packaging.

The second embodiment is also an embodiment of the first alternative of the invention. The guide channel 11 has two gradient sections 12 . The first gradient section 12 viewed from the inlet opening 4 causes the guide tooth 13 and thus also the closure cap 6 to move axially upwards within the first 40 degrees of rotation angle in such a way that the resulting axial forces are sufficient to separate the tearable webs 23 between To tear cap 6 and anchor ring 9. In a duct section without a gradient adjoining this gradient section in the opening direction of rotation, the guide tooth 13 is guided exclusively in the circumferential direction. The resulting rotary movement of the closure cap 6 moves the cutting ring through the inlet opening 4 so that it is fully extended at the latest when the guide tooth 13 of the end of the guide channel 11 closest to the pouring opening 5 is reached. The channel section without a slope is followed by a further slope section 12 in the opening direction of rotation, which causes the closure cap 6 to rise further axially and then—after the guide tooth 13 and guide channel 11 have disengaged—it is pivoted slightly in the axial direction can to release the pouring opening 5.

How based on 11 , 14 and 16 As can be seen, the guide tooth 13 of the second embodiment has the same slope as the two slope sections 12 of the guide channel 11 . For this reason, the guide channel section is designed to be widened without an incline, so that the guide tooth 13, which is inclined in relation to this guide channel section, can be guided through the guide channel section designed perpendicularly to the locking axis.

The second embodiment has a reclosing mechanism that is implemented by the insertion bevel 32 . The wall section 17 that defines the upper boundary of the guide channel is at least partially equipped with an insertion bevel 32 that extends axially and rises radially. This insertion bevel 32 makes it possible to press the guide tooth 13 into the guide channel 11 via the upper wall cut 17 in a large number of relative positions of the guide tooth 13 and guide channel 11 (equivalent to closure cap 6 and base element 2) - with the usual everyday forces of an average user . The in the 9 until 16 The closure device 1 shown can therefore only be opened like a screw cap, but reclosed like a flip-top closure.

14 also shows a stop element 30. If a user turns the closure cap 6 from the closed state in the opening direction of rotation, the guide tooth 13 then comes into contact with the stop element 30 when the guide tooth 13 and the guide channel 11 are out of contact and thus an axial pivoting of the closure cap 6 is possible.

Reference List

1

locking device

2

base element

3

spout

4

entrance opening

5

pouring opening

6

sealing cap

7

cap lid

8th

cap coat

9

anchor ring

10

fastener

11

guide channel

12

incline section

13

guide tooth

17, 17'

wall section

20

Guide channel section with zero gradient

22

tamper evident device

23

tearable web

24

guarantee ring

25

cutting device

26

cutting element

27

take-along device

28

sealing ring

29

sealing protrusion

30

stop element

31

locking element

32

lead-in bevel

33

locking projection

34

retaining ring

35

mounting flange

50

locking axis

Claims (39)

Closing device (1) for bayonet-like opening of a container, wherein the closure device (1) comprises a base element (2), wherein the base element (2) has a pouring channel (3) which extends along a closure axis (50) and has an inlet opening (4) and a pouring opening (5), wherein the closure device (1) comprises a closure cap (6), the closure cap (6) having a cap cover (7) and a cap jacket (8) adjoining the cap cover (7) on the circumferential side and extending axially, wherein the closure cap (6) and the base element (2) are designed in such a way that the closure cap (6) closes the pouring opening (5) when the closure device (1) is in a closed state and opens it when the closure device (1) is in an open state, wherein the closure device (1) comprises an anchor ring (9) and a connecting element (10), wherein the connecting element (10) connects the anchor ring (9) to the closure cap (6), the anchor ring (9) being in engagement with the base element (2) both in the closed state and in the open state of the closure device (1) is that the closure cap (6) is connected to the base element (2) with the connecting element (10) and the anchor ring (9) even in the open state, wherein the closure cap (6) has a first guiding means, wherein the base element (2) has a second guiding means, wherein the first guiding means and the second guiding means can be engaged and disengaged in order to selectively close or close the closure device (1). to open, wherein the first and second guide means are designed in such a way that a rotational movement of the closure cap (6) in the circumferential direction relative to the base element (2) is absolutely necessary for disengaging the first and second guide means and for engaging Bringing first and second guide means relative to the base element (2) taking place rotary movement of the closure cap (6) at least one relative circumferential position of closure cap (6) and base element (2) is not necessary. Closing device (1) according to claim 1 , wherein in a first alternative the base element (2) has at least one guide channel (11) extending over a first circumferential angle W1, wherein the guide channel (11), viewed from the inlet opening (4), extends at least over a second circumferential angle W2 Gradient section (12) with a gradient angle γ greater than zero, to be measured relative to a plane perpendicular to the closure axis (50), increases in the axial direction, with the cap jacket (8) of the closure cap (6) having at least one guide tooth ( 13), wherein in a second alternative the cap jacket (8) of the closure cap (6) has at least one guide channel (11) extending over a first circumferential angle W1, the guide channel (11), viewed from the edge of the cap bordering on the anchor ring (9), at least in a slope section (12) extending over a second circumferential angle W2, with a slope angle y greater than zero to be measured relative to a plane perpendicular to the closure axis (50). rises in the axial direction, wherein the base element (2) has at least one guide tooth (13) projecting radially away from the locking axis (50), wherein in the first and second alternative the locking device (1) is designed in such a way that the at least one guide channel ( 11) and the at least one guide tooth (13) can be brought into engagement with one another either by a closing movement or disengaged by an opening rotary movement in order to bring the closure device (1) either into the closed state or into the open state, and wherein the closure device ( 1) is designed in such a way that the engagement of F The guide channel (11) and guide tooth (13) within the gradient section (12) cause an axial relative movement between the cap jacket (8) and the anchor ring (9) during an opening rotary movement, wherein in a third alternative the base element (2) rotates at least one angle over a first circumferential angle W1 extending guide rib, wherein the guide rib viewed from the inlet opening (4) at least in a slope section (12) extending over a second circumferential angle W2 with a slope angle y greater than zero in the axial direction to be measured relative to a plane perpendicular to the closure axis (50). direction, with the cap skirt (8) of the closure cap (6) having at least one guide recess, with two axially spaced teeth each protruding radially towards the closure axis (50) defining the guide recess, with a fourth alternative being the cap skirt (8) of the closure cap (6) at least one find out about a first n circumferential angle W1 extending guide rib, wherein the guide rib viewed from the edge of the cap adjacent to the anchor ring (9) at least in a slope section (12) extending over a second circumferential angle W2 with a plane perpendicular to the closure axis (50) to be measured Pitch angle y greater than zero increases in the axial direction, with the base element (2) having at least one guide recess, with two axially spaced teeth each projecting radially away from the locking axis (50) defining the guide recess, with the locking device ( 1) is designed in such a way that the at least one guide rib and the at least one guide recess can be brought into engagement with one another either by a closing movement or disengaged by an opening rotary movement in order to selectively move the closure device (1) into the closed state or bring it into the open state, with the closure device (1) being designed in such a way that the engagement of the guide rib and guide recess within the slope section (12) causes an axial relative movement between the cap jacket (8) and the anchor ring (9) during an opening rotary movement. Closing device (1) according to claim 2 , wherein in the first alternative and the second alternative the guide tooth (13) has an axial pitch corresponding to the axial pitch of the guide channel (11) with the pitch angle δ = γ, wherein in the third alternative and the fourth alternative the guide recess has a pitch to the axial pitch of the guide tooth (13) has a corresponding axial gradient with the gradient angle δ=γ. Closing device (1) according to claim 2 , wherein in the first alternative and the second alternative the guide tooth (13) has an axial pitch δ ≢ γ deviating from the axial pitch of the guide channel (11) or no axial pitch δ = 0, wherein in the third alternative and the fourth alternative the Guide recess of the axial pitch of the guide tooth (13) deviating axial pitch δ ≢ γ or no axial pitch δ = 0. Closure device (1) according to one of claims 2 until 4 , wherein in the first and second alternative the guide channel (11) and the guide tooth (13) are designed in such a way that when the guide tooth (13) is arranged within the slope section (12) or a partial area of the slope section (12), an axial Lifting off of the closure cap (6) is prevented without a further rotary movement of the closure cap (6) about the closure axis (50), the guide rib and the guide recess being designed in the third and fourth alternative in such a way that when the guide recess touches the slope section (12) or surrounds a partial area of the gradient section (12), an axial lifting of the closure cap (6) without a further rotary movement of the closure cap (6) about the closure axis (50) is prevented. Closure device (1) according to one of claims 2 until 5 , where in the first and second Alternatively, two wall sections (17, 17') spaced axially apart from one another form a region of the sloped section (12) and can be connected by an imaginary connecting line running exclusively axially. Closure device (1) according to one of claims 2 until 6 , wherein in the first and second alternative the guide channel (11) has a first stop surface that is closest when viewed from the inlet opening (4) when the closure device (1) is closed and a stop surface that is closest to the inlet opening (4) when the closure device (1) is closed. second stop surface considered further away, wherein the guide tooth (13) in the closed state of the closure device (1) is in contact with the first stop surface via a first contact point in at least one circumferential position and by an exclusively axial displacement of the closure cap (6) by a distance s greater than zero can be brought out of contact with the first stop surface and via a second contact point into contact with the second stop surface, wherein in the third and fourth alternative the guide recess is the one closest to the pouring opening (5) when the closure device (1) is in the closed state e first abutment surface and a second abutment surface which is further away when viewed from the pouring opening (5) in the closed state of the closure device (1), the guide rib in the closed state of the closure device (1) being in contact at least in one circumferential position via a first contact point with the first stop surface and can be brought out of contact with the first stop surface and via a second contact point into contact with the second stop surface by exclusively axial displacement of the closure cap (6) by a distance s greater than zero. Closing device (1) according to claim 7 , wherein the distance s is at most 0.8 mm, preferably at most 0.5 mm and particularly preferably at most 0.3 mm. Closure device (1) according to one of claims 2 until 8th , wherein in the first and second alternative the guide tooth (13) or, in the case of several guide teeth, all the guide teeth taken together extend or extend over a circumferential angle of no more than 45 degrees, preferably no more than 30 degrees and particularly preferably no more than 15 degrees, wherein in the third and fourth alternative, the guide recess or, in the case of several guide recesses, all the guide recesses taken together extend or extend over a circumferential angle of at most 45 degrees, preferably at most 30 degrees and particularly preferably at most 15 degrees. Closure device (1) according to one of claims 2 until 9 , wherein in the first and second alternative the guide tooth (13) or all of the guide teeth and in the third and fourth alternative the guide recess or all of the guide recesses extend over a circumferential angle of 5 degrees to 10 degrees. Closure device (1) according to one of claims 2 until 10 , wherein for the first alternative and the second alternative the guide channel (11) in the gradient section (12) has a guide channel width d to be measured perpendicularly to the circumferential direction of extension of the guide channel (11), wherein in the closed state of the closure device (1) within the guide channel ( 11) lying part of the guide tooth (13) has a maximum circumferential extent a to be measured in the circumferential direction and a maximum axial extent b to be measured axially, the circumferential extent a and the axial extent b being designed in such a way that the following inequality is satisfied: $$a\text{tan}g+b\le \mathrm{i.e}\text{cos}g,$$

for the third and the fourth alternative, the guide rib in the gradient section (12) has a rib width d' to be measured perpendicular to the direction in which the guide tooth (13) extends, the part of the guide recess delimiting the guide rib in the closed state of the closure device (1) in the axial direction has a maximum circumferential extent a' to be measured in the circumferential direction and a minimum axial extent b' to be measured axially, the circumferential extent a' and the axial extent b' being designed in such a way that the following inequality is satisfied: $$b\text{'}-a\text{'}\text{tan}g\ge \mathrm{i.e}\text{'}\text{cos}g.$$

Closure device (1) according to one of claims 2 until 11 wherein in the first and second alternative the guide channel (11) and the guide tooth (13) are designed and arranged in such a way that in the closed state of the closure device (1) they travel over a distance, measured radially to the closure axis (50), of at least 0.7 mm, preferably at least 0.8 mm overlap, in the third and fourth alternative, the guide rib and the guide recess tion are designed and arranged in such a way that in the closed state of the closure device (1) they overlap over a distance of at least 0.7 mm, preferably at least 0.8 mm, to be measured radially to the closure axis (50). Closure device (1) according to one of claims 2 until 12 , wherein in the first and second alternative a guide channel width d to be measured perpendicular to the direction of extent of the guide channel (11) remains constant over the entire circumferential extent of the guide channel (11), wherein in the third and fourth alternative a rib width to be measured perpendicular to the direction of extent of the guide rib d' remains constant over the entire circumferential extent of the guide rib. Closure device (1) according to one of claims 2 until 12 , wherein in the first and second alternative, a guide channel width d' to be measured perpendicularly to the direction of extent of the guide channel (11) varies along the circumferential extent of the guide channel (11), preferably in the closed state of the closure device (1) in the direction of the inlet opening (4). decreases, wherein in the third and fourth alternative a rib width d' to be measured perpendicularly to the direction of extent of the guide rib varies along the circumferential extent of the guide rib, preferably increasing in the closed state of the closure device (1) in the direction of the inlet opening (4). Closure device (1) according to one of claims 2 until 14 , wherein the first circumferential angle W1 is less than 400 degrees, preferably less than 360 degrees. Closure device (1) according to one of claims 2 until 15 , wherein the first circumferential angle W1 is greater than or equal to 180 degrees, preferably greater than or equal to 300 degrees. Closure device (1) according to one of claims 2 until 16 , wherein the second circumferential angle W2 is at least 10 degrees, preferably at least 30 degrees and particularly preferably at least 180 degrees. Closure device (1) according to one of claims 2 until 17 , wherein the second circumferential angle W2 is between 10 and 40 degrees or between 180 and 360 degrees. Closure device (1) according to one of claims 2 until 18 , wherein the at least one gradient section (12) is designed in such a way that in the first and second alternative the guide channel (11) rises axially at least by a guide channel width measured perpendicularly to the direction of extension of the guide channel (11) and in the third and fourth alternative the guide rib at least by the sum of a rib width to be measured perpendicular to the direction of extension of the guide recess and a tooth width of the teeth forming the guide recess to be measured perpendicular to the direction of extension of the guide recess, if the teeth have the same tooth width, or of that tooth whose tooth width is larger, if the teeth have different tooth widths, increases axially. Closure device (1) according to one of claims 2 until 19 , wherein in the first and second alternative the guide channel (11) in the gradient section (12) rises axially by at least 0.5 mm and at most 2.5 mm, preferably at least 0.8 mm and at most 1.5 mm and in the third and fourth alternative, the guide rib in the gradient section (12) rises axially by at least 0.5 mm and at most 2.5 mm, preferably at least 0.8 mm and at most 1.5 mm. Closure device (1) according to one of claims 2 until 20 , wherein the pitch angle within the pitch section (12) is constant. Closure device (1) according to one of claims 2 until 20 , wherein the pitch angle varies within the pitch section (12), the pitch section (12) preferably comprising a leading section with a constant pitch angle γ1 and an opening section adjoining it in the opening direction of rotation with a constant pitch angle y2 unequal to γ1 and either the pitch angle y2 being greater than the pitch angle is γ1 or the pitch angle γ1 is greater than the pitch angle y2. Closure device (1) according to one of claims 2 until 22 wherein at least two slope sections (12) are provided, which are separated from each other by a guide channel section with a slope angle equal to zero in the first and second alternative and by a guide rib section with a slope angle equal to zero in the third and fourth alternative. Closure device (1) according to one of claims 2 until 23 , wherein in the first and second alternative of the guide channel (11) at its peripheral, the one passage opening (4) has a first slope section (12) and preferably at the circumferential end nearest the outlet opening a second slope section (12), wherein in the third and fourth alternative the guide rib at its circumferential end nearest the inlet opening (4). a first slope section (12) and preferably at the peripheral end nearest the exit opening a second slope section (12). Closure device (1) according to one of claims 2 until 24 , wherein in the first and second alternative the guide channel (11) and the guide tooth (13) are designed and arranged relative to one another such that when the closure cap (6) is rotated for the first time to open by 40 degrees or less, at least at one rotational angle position of the closure cap (6) an axial lifting movement of the closure cap (6) relative to the anchor ring (9) of at least 0.5 mm, preferably at least 0.75 mm and particularly preferably at least 1 mm has taken place, with the guide rib and the guide recess being designed in this way in the third and fourth alternative and are arranged relative to one another such that when the closure cap (6) rotates for the first time to open by 40 degrees or less, at least at one rotational angle position of the closure cap (6) there is an axial lifting movement of the closure cap (6) relative to the anchor ring (9) of at least 0.5 mm, preferably at least 0.75 mm and particularly preferably at least 1 mm. Closure device (1) according to the preceding claim, wherein a tearable web (23) is arranged between the anchor ring (9) and the closure cap (6) or between the anchor ring (9) and an additional guarantee ring (24) at the at least one rotational angle position. Closure device (1) according to one of claims 2 until 26 , wherein in the first and third alternative the base element (2) has a stop element, the stop element being designed and arranged in such a way that it only comes into contact with the guide tooth (13) of the first alternative or a tooth forming the guide recess of the third alternative comes into contact when the closure cap (6) can be lifted axially relative to the anchor ring (9) in such a way that a further rotary movement of the closure cap (6) about the closure axis (50) is not necessary to release the pouring opening (5), wherein in of the second and fourth alternative of the present invention, the cap skirt (8) has a stop element, the stop element being designed and arranged in such a way that it only comes into contact with the guide tooth (13) of the second alternative or a tooth forming the guide recess of the fourth alternative comes into contact when the closure cap (6) can be lifted axially relative to the anchor ring (9), without a further rotary movement of the closure cap (6) around the closure cap (6) being necessary to release the pouring opening (5). Closure device (1) according to one of the preceding claims, wherein the closure device (1) comprises a guarantee ring (24), the guarantee ring (24) being connected to the anchor ring (9) via easily tearable webs, the closure device (1) being designed in such a way is that the easily tearable webs tear when the closure device (1) is opened for the first time. Closure device (1) according to one of the preceding claims, wherein the closure device (1) comprises a cutting device (25) arranged at least in sections within the pouring channel (3) and having a cutting element (26), and wherein the closure cap (6) comprises a driver device, wherein the Driver device and the cutting device (25) are designed and arranged in such a way that turning the closure cap (6) for the first time in a direction of rotation for opening causes the cutting element (26) to move from a starting position of the cutting element (26) into one of the pouring opening (5). causes the inlet opening (4) pointing direction, so that the cutting element (26) is at least partially movable through the inlet opening (4). Closure device (1) according to one of the preceding claims, wherein the closure device (1) has a tamper-evident device (22), wherein the tamper-evident device (22) in a first state provides a first visible or tactile indication and in a second state a second, from provides a visible or tactile display to be distinguished from the first display, the closure device (1) being designed in such a way that when the first rotary opening movement is made, the tamper-evident device (22) changes from the first state to the second state at a rotary angle D1, with the rotary angle D1 is measured starting from a rotation angle zero point D0. Closing device (1) according to Claim 30 as far as this one claim 29 is withdrawn, wherein after changing the tamper-evident device (22) from the first state to the second state at a rotation angle D2, the cutting element (26) for the first time through the inlet opening (4) out of the pouring channel (3). moved so that the angle of rotation D2 is greater than the angle of rotation D1, both angles of rotation D1 and D2 are measured starting from the same zero point of rotation angle D0. Closing device (1) according to Claim 31 , wherein the angle of rotation D2 is at least 10 degrees, preferably at least 20 degrees greater than the angle of rotation D1. Closing device (1) according to Claim 30 , 31 or 32 , wherein the tamper-evident device (22) comprises an additional guarantee ring (24) connected to the anchor ring (9) via at least one easily tearable web, the at least one easily tearable web between anchor ring (9) and guarantee ring (24) being in the first state of the Tamper-evident device (22) is intact and is torn in the second state of the tamper-evident device (22). Closure device (1) according to one of claims 30 until 33 , the tamper-proof feature comprising at least one easily tearable web between the anchor ring (9) and the cap skirt (8) of the closure cap (6), the at least one easily tearable web between the anchor ring (9) and the cap skirt (8) in the first state of the Tamper-evident device (22) is intact and is torn in the second state of the tamper-evident device (22). Closure device (1) according to one of Claims 33 or 34 , as far as this on claim 2 are set back, wherein the at least one gradient section (12) is designed in such a way and is arranged at least in sections in a rotational angle range between the rotational angle D0 and the rotational angle D1, such that during an initial opening rotational movement when the rotational angle D1 is reached through the axial guide along the closure cap (6). of the gradient section (12), the at least one tearable web between the anchor ring (9) and the cap jacket (8) tears. Closure device (1) according to one of the preceding claims, wherein the closure cap (6) has an annular sealing ring (28) which protrudes into the pouring opening (5) in the closed state of the closure device (1) and which is attached to an inner surface of the pouring channel (3). the sealing ring (28) has a circumferential sealing projection (29) that projects radially from the closure axis (50), the relative axial position of the sealing projection (29) relative to the pouring channel (3) changing when the closure device (1) is in the closed state. at a first circumferential position differs from the relative axial position of the sealing projection (29) with respect to the pouring channel (3) at a second circumferential position. Closing device (1) according to Claim 35 , as far as this on claim 2 is referred back, wherein in the first alternative and the second alternative the sealing projection (29) is arranged further away from the cap cover (7) at a peripheral position of the guide tooth (13) than at a peripheral position of the connecting element (10), wherein in the third and in the fourth alternative, the sealing projection (29) is arranged further away from the cap cover (7) at a peripheral position of the guide recess than at a peripheral position of the connecting element (10). Closure device (1) according to any one of the preceding claims, insofar as this on claim 2 is referred back, wherein in the first and second alternative the closure device (1) has a re-closing device, wherein the re-closing device is designed and arranged in such a way that for disengaging the guide tooth (13) and guide channel (11) from the closed state a rotational movement of the closure cap (6) in the circumferential direction relative to the base element (2) is absolutely necessary and for at least some of the possible relative positions of the closure cap (6) and base element (2) to one another for an engagement of the guide tooth ( 13) and guide channel (11), an axial relative movement of the base element (2) and closure cap (6) is sufficient without movement components in the circumferential direction, wherein in the third and fourth alternative the closure device (1) has a reclosing device, the reclosing device being designed and arranged in this way is that for a non-engagement - Bringing the guide recess and guide rib out of the closed state requires a rotational movement of the closure cap (6) relative to the base element (2) in the circumferential direction and at least for some of the possible relative positions of the closure cap (6) and base element (2) to one another an axial relative movement of the base element (2) and closure cap (6) without movement components in the circumferential direction is sufficient for bringing the guide recess and guide rib into engagement, Closing device (1) according to Claim 38 , wherein in the first alternative, the re-closing device comprises a circumferentially extending ring section, which at least partially the in the closed state of the closure device (1) of the pouring opening (5) closest axial boundary of the guide as (11), wherein the ring section has an insertion bevel (32) that rises radially when viewed from the pouring opening (5), the insertion bevel (32) being designed in such a way that, starting from the open state of the closure device (1), the guide tooth ( 13) can be moved via the insertion bevel (32) in the direction of the inlet opening (4) in order to engage with the guide channel (11), wherein in the second alternative the reclosing device comprises a circumferentially extending ring section which at least partially corresponds to the closed State of the closure device (1) defines the axial boundary of the guide channel (11) closest to the inlet opening (4), the ring section having an insertion bevel (32) that rises radially when viewed from the inlet opening (4), the insertion bevel (32) being designed in such a way that starting from the open state of the closure device (1) the insertion bevel (32) üb he the guide tooth (13) is movable in the direction of the entry opening (4) in order to bring about engagement of the guide channel (11) and guide tooth (13), wherein in the third alternative the reclosing device defines the guide recess and the entry opening (4) in the closed state of the closure device (1), the tooth having an insertion bevel (32) that rises radially when viewed from the inlet opening (4), the insertion bevel (32) being designed in such a way that, starting from the open state of the closure device ( 1) the tooth can be moved via the insertion bevel (32) in the direction of the inlet opening (4) in order to engage with the guide rib, with the fourth alternative being the reclosing device that defines the guide recess and the pouring opening (5) in the closed state of the Closure device (1) closest tooth comprises, said tooth one of the Au casting opening (5) has a radially increasing insertion bevel (32) viewed from the side, the insertion bevel (32) being designed in such a way that the guide rib can be moved over the insertion bevel (32) in the direction of the inlet opening (4) in order to prevent the guide rib and guide recess from engaging to effect.

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