WO2023078647A1

WO2023078647A1 - Pouring device

Info

Publication number: WO2023078647A1
Application number: PCT/EP2022/078181
Authority: WO
Inventors: Tim GIERSE; Frank Römer; Christoph CZARNETZKI
Original assignee: Georg Menshen Gmbh & Co. Kg
Priority date: 2021-11-05
Filing date: 2022-10-11
Publication date: 2023-05-11

Abstract

The invention relates to a pouring device comprising a spout (1) that is connected or at least connectable to a container and that has a pouring spout (2), a closure cap (4) with which the pouring spout (2) can be closed and opened, wherein cooperating closure elements (8, 9, 11) are arranged on the outer lateral surface (10) of the pouring spout (2) and on the inner lateral surface (7) of the closure cap (4), by means of which closure elements the closure cap (4) and the pouring spout (2) can be connected to one another and detached from one another by rotating the closure cap (4) about an axis of rotation (3) extending through the pouring spout (2), wherein the cooperating closure elements (8, 9, 11) are formed by at least one lobe (8) on the closure cap (4), which projects radially inwardly from the inner lateral surface (7) of the closure cap (4), and at least one retaining projection (9) on the pouring spout (2), which projects radially outwardly from the outer lateral surface (10) of the pouring spout (2) and is extended on the outer lateral surface (10) in the circumferential direction around the axis of rotation (3), wherein, in particular as viewed in the axial mounting direction of the closure cap (4), the lobe (8) can be brought into a position engaging behind the retaining projection (9) and associated with the retaining projection (9) is a guide projection (11) that projects radially outwardly from the outer lateral surface (10) of the pouring spout (2) and has a course extending over the lateral surface (10), wherein the retaining projection (9) and the guide projection (11) have, at least in regions, different pitches in the direction of the axis of rotation (3), wherein a guide slot is formed between the retaining projection (9) and the associated guide projection (11), through which slot the lobe (8) of the closure cap (4) can be guided into the position engaging behind the retaining projection (9).

Description

pouring device

The invention relates to a pouring device comprising a pouring spout which is connected to a container or at least can be connected to a container and which has a pouring spout, and comprising a closure cap with which the pouring spout can be closed and opened, the outer surface of the pouring spout and cooperating closure elements are arranged on the inner lateral surface of the closure cap, by means of which the closure cap and the pouring spout can be connected to one another and detached from one another by rotating the closure cap about an axis of rotation running through the pouring spout, preferably which coincides with the central longitudinal axis of the pouring spout.

Pouring devices of this type are generally known and are used, for example, in containers that are designed as film bags, for example for holding pasty food. For connection to a film bag, a fastening part, in particular a boat-shaped fastening part, can be provided on the end of the spout facing away from the removal opening of the pouring spout, which is fastened between two film layers of the film bag, e.g. by welding / heat sealing or similar known measures. The invention preferably relates to such pouring devices with an attachment area on the spout that is suitable for attachment to a film bag, but is not limited to this configuration. A pouring spout of this type is known, for example, from publication US Pat. No. 10,442,582 B and, as cooperating closure elements, has an external thread on the pouring spout and an internal thread in the closure cap. Closure cap and pouring spout can thus only be connected to one another and separated from one another by turning them over a large turning angle range.

This is particularly problematic during initial assembly, since assembly machines must be appropriately equipped to turn the closure caps through such large angles. This is not only complex in terms of the mechanical suitability of the machines, but also takes up a lot of assembly time.

Furthermore, the users of a container with such a pouring device sometimes have to grip the closure cap several times in order to achieve the angle of rotation required for opening. A cap that has already been loosened can quickly fall off the pouring spout in an uncontrolled manner.

In general, a separate design of closure cap and spout represents a problem, since such closure caps can not only be lost quickly, but also small children have the problem of choking, which has hitherto been prevented with complex cap constructions or at least the risk of suffocation is avoided.

It is also known to keep closure caps with a spout connected by at least one retaining strap, whereby such closure caps can no longer be lost and, because of the existing connection, cannot easily be put in the mouth and swallowed by children. Closure caps of a general type held on the container are known, for example, from publication EP 1 961 669 A2.

Against this background, it is an object of the invention to provide a pouring device, preferably for film bags, which can be installed more easily, in particular more quickly, can preferably also be opened and closed again more easily by users and particularly preferably a permanent connection between the closure cap and Has spout. This object is achieved according to the invention in that the interacting closure elements are formed by at least one cam on the closure cap, which protrudes radially inward from the inner lateral surface of the closure cap, and by at least one holding projection on the pouring spout, which protrudes radially from the outer lateral surface of the pouring spout on the outside and extends on the outer lateral surface in the circumferential direction around the axis of rotation, with the cam being able to be brought into a position which engages behind the holding projection when viewed in the axial mounting direction of the closure cap and the holding projection being assigned a guide projection which extends radially from the outer lateral surface of the pouring spout protrudes on the outside and has a profile that extends over the lateral surface, with the holding projection and the guide projection having different gradients in the direction of the axis of rotation, at least in some areas, with a guide slot being formed between the holding projection and the associated guide projection, through which the cam of the closure cap passes into the holding projection behind-gripping position is feasible.

The regionally different slope of the holding projection and the associated guide projection means that the holding projection and the guide projection or an associated guide projection viewed from a plurality of views over their respective entire extent on the lateral surface do not run parallel to one another everywhere with a constant slope, but in particular there can be parallel areas . Expressed alternatively, a retaining projection has at least one area that has a different slope than an area of the guide projection. The areas to be compared with regard to the gradient can be at the same angular positions and/or at different angular positions, viewed in the circumferential direction around the axis of rotation of the cap or the central axis of the pouring spout. For example, the assigned guide projection can have a greater and/or smaller gradient in the direction of the axis of rotation, either in whole or in certain areas, than the holding projection, in particular than the holding projection as a whole or as a Section of the retaining projection. A retaining projection and/or guide projection can have the same pitch anywhere along its extent or a different pitch in some areas, in particular which can also include a pitch of the amount ZERO in whole or in some areas. A guiding projection can be completely or at least partially different in the sign of the gradient, ie the direction of the gradient, from the gradient of at least a partial region of the retaining projection, in particular having the same or different magnitude of the gradient.

In the position that engages behind, the cam lies behind the holding projection, in particular in contact with it, viewed from the removal opening in the direction of the axis of rotation to the holding projection. The retaining projection is preferably understood to be that region of the extension of a projection that rises from the lateral surface and that the cam in the cap can engage behind. In particular, other areas of such a rising projection, which the cam cannot engage behind, can also form a guide projection within the meaning of the invention, in particular a guide projection of several, in particular of two, guide projections.

The associated guide projection is preferably a projection that is separate from the holding projection, ie has a distance from the associated holding projection along its entire course.

Provision can be made for the holding projection and an associated guide projection to be connected only at the radial height level of the outer lateral surface of the pouring spout, ie not to have any connecting regions which protrude radially above this lateral surface.

Alternatively, it can also be provided that a holding projection and an associated guide projection are connected by a further functional element that protrudes radially over the lateral surface, e.g. by a stop element against which the cam in the cap can strike, e.g. when the cap rotates in the closing direction is rotated. It can preferably be provided that the holding projection and the guide projection each have a constant width along their extent (in particular viewed perpendicularly to the direction of extent), in particular both have an identical width. Holding projection and guide projection can also have different widths, in particular the guide projection can be narrower in width than the holding projection. In particular, it can be provided that the two projections at the ends taper in width and/or decrease in height above the lateral surface.

In particular, the guide link is delimited by the holding projection, the at least one associated guide projection and the outer lateral surface of the pouring spout and is open radially to the outside. When guiding the cam in the guide link, the retaining projection and an associated guide projection do not necessarily have to be in contact with the cam at the same time; in particular, it can be provided that the cam only ever makes contact with one of the two projections during guidance in the guide link. A guide link similar to a bayonet connection is preferably formed with the retaining projection and the guide projection.

Preferably, the gradients of the holding projection and guide projection, which differ at least in some areas, ensure that when the pouring spout is closed by turning the closure cap in the closing direction of rotation, the cam is guided in the direction of the guide link and/or to or behind the holding projection and/or when the pouring spout by turning the closure cap in the opening direction of rotation of the cam, preferably by means of a greater gradient in the opening direction of rotation of an associated guide projection compared to the retaining projection or at least compared to a partial area of the retaining projection in the direction of the dispensing opening, with or as a result of which the closure cap is guided axially from the pouring spout is picked up. In contrast to the prior art, such an arrangement does not form a threaded connection in the classic sense, in particular due to the different gradients, at least in certain areas, of the retaining projection and associated guide projection, which must be moved over large angles of rotation for opening and closing. In particular, if the pouring device is to be closed as desired, after the cam of the closure cap has been inserted into the guide slot, the cam can be rotated into the guide slot and/or into the position that engages behind the holding projection, which the closure cap at least already secures against axial pulling off, i.e. creates a closed, if necessary. Even already sealed condition.

This state is already reached as soon as the cam has stepped behind the retaining projection in some areas and preferably completely with its cam length viewed in the circumferential direction.

Provision can be made for a sealing element in the closure cap to already interact in a sealing manner with the removal opening of the pouring spout when a position that engages behind is reached.

However, it can also be provided that after reaching a position that engages behind, which already secures against axial removal, by turning in the closing direction of rotation, in particular with an increasing overlap of the cam and retaining projection by turning in the closing direction of rotation, in particular with an axial movement of the Closure cap cover towards the removal opening, a sealing element in the cover area comes into sealing interaction with the removal opening.

It can be provided that the cam is arranged at least at the end of the guide link in such a position that engages behind the holding projection, viewed in the closing direction of rotation, which corresponds to an angular position of the cam, viewed in the circumferential direction about the axis of rotation/central axis of the pouring spout, in which the closure cap without rotation can be pushed onto the pouring spout with a purely axial movement, In this case, in particular, a closed position is reached, preferably in which elements on the closure cap and/or on the spout that indicate the originally closed state assume such a position relative to one another that a rotation from this position irreversibly indicates an opening of the pouring device, in particular by a change in the displaying elements.

In a possible first embodiment, it can preferably be provided that the end region of the retaining projection lying in the direction of rotation for opening, in particular the region in which its height above the lateral surface of the pouring spout decreases towards the end of the retaining projection, at least in regions on the outer lateral surface of the pouring spout in is arranged in the same axial position interval as the guide projection, in particular as its end region lying in the direction of rotation of the opening, in particular the region in which the height of the guide projection above the outer surface of the pouring spout decreases towards the end of the guide projection. With this arrangement, a passage area extending in the circumferential direction/rotational direction is formed between the retaining projection and the associated guide projection, through which the cam of the closure cap can be guided into the guide slot, in particular into the position engaging behind the retaining projection. The passage area is therefore preferably arranged next to the end areas of the retaining projection and the guide projection when viewed in the circumferential direction.

As a result, the penetration area is limited in the circumferential direction or direction of rotation about the axis of rotation on the lateral surface, namely to an angular area between the end areas of the holding projection and the guide projection. When opening, a user only has to turn the closure cap far enough for the cam to reach the passage area from the position that engages behind it, or is axially opposite to it, preferably with the cam being limited in rotation by the guide projection and/or guided in the direction of the passage area becomes. Provision can preferably be made for the cam to reach a position in the passage region or axially opposite this, that the closure cap can be pulled off the pouring spout axially without further rotation.

Preferably, viewed in the axial direction of the removal opening, the end region lying in the direction of rotation of the opening, or the end of the guide projection, does not protrude beyond the end region of the holding projection lying in the same direction, in particular it stands back axially.

This ensures that in axial positions of the cam in the direction of the removal opening in front of the end area of the retaining projection, the closure cap can be placed on the pouring spout during initial assembly and can be rotated about the axis of rotation without an engagement between the cap and pouring spout.

For example, the closure cap can be brought, e.g. by machine, into a predetermined angular position about the axis of rotation relative to the pouring spout, e.g. in order to slide the cap in this first embodiment, but also in other possible embodiments, only axially onto the pouring spout, in particular with the cam of the Closure cap reaches a position that engages behind the holding projection, in which position the pouring spout is tightly closed.

A preferred embodiment, which can be combined with this first embodiment, but also with all other possible embodiments, in particular those described below, can provide that the closure cap has two cams, preferably two diametrically opposite cams, and the pouring spout has two retaining projections, preferably two diametrically opposed opposite holding projections, wherein each holding projection is associated with at least one respective guide projection.

In this case, two guide projections are preferably located diametrically opposite one another.

Diametrically opposite should preferably mean here that the respective

Projections or cams on opposite sides around the axis of rotation are arranged around. The projections and cams are preferably arranged 180 degrees rotationally symmetrically around the axis of rotation, ie can be converted into one another when rotated 180 degrees.

The following descriptions of a cam or retaining projection or guide projection apply in the presence of two diametrically opposite elements of the same type, preferably for both elements in each case.

The design with diametrically opposite projections and cams has the advantage that the forces acting when closing and opening are distributed more evenly around the axis of rotation and the closure cap cannot be placed crookedly on the socket, preferably automatically straightened during a rotation, especially when closing becomes.

In a further preferred embodiment, it can be provided in all possible embodiments that the respective cam of the closure cap can only be guided into the guide slot through a passage area that is formed between the end of a guide projection and the retaining projection, but there is no possibility that the cam in a different way than through the guide link, or in a different position than in the guide link, it can reach the position that engages behind the holding projection. In the possible embodiments, it can preferably be provided that there is only the possibility of placing the closure cap on the pouring spout in a number of different angular positions corresponding to the number of cams in such a way that the cam or cams get/get into the guide link.

Preferably, in all possible embodiments, each of the cams can be extended in the circumferential direction over a cam length on the inner lateral surface of the closure cap.

In the first embodiment mentioned, the length of the cam is preferably greater than the distance between the guide projection, in particular its end lying in the opening direction of rotation, and the other unassigned one Retaining projection, in particular its end lying in the closing direction of rotation. In this embodiment, the cam can only get into the guide link and into the engaging position through the space between the retaining projection and the guide projection assigned to it, through the passage area extending in the circumferential direction. The guide projection associated with the holding projection is in particular the one whose end lying in the opening direction of rotation lies next to the end of the holding projection in the opening direction of rotation.

In particular, the length of the cam is selected to allow passage through the passage area; the length of the cam is preferably smaller than the distance viewed in the circumferential direction between the end or end area of the holding projection and the associated guide projection, in particular its end/end area.

In one embodiment of all possible designs, the retaining projection can have no gradient at all or at least in certain areas, or have a gradient of zero, i.e. it extends in the circumferential direction on the outer surface at least in certain areas at a constant axial position or, based on its width, in a constant axial position interval. In this embodiment, the cam can be moved at least in regions along the guide projection in the position that engages behind it, without generating an axial force on the closure cap. In such a design, the guide projection can, for example, also be aligned exclusively axially with regard to its course extending over the lateral surface.

However, it is preferably provided that the retaining projection has a slope in the direction of the axis of rotation, which means a slope other than zero, overall or at least in certain areas, in particular at least at its end region lying in the opening direction of rotation. In particular, the slope is selected such that the retaining projection, viewed in the closing direction of rotation, is away from the removal opening of the pouring spout in this slope area on the lateral surface. In a possible preferred embodiment, in particular the first embodiment mentioned, this slope is constant over the entire extent of the retaining projection.

In general, in this description of the invention, the slope in the direction of the axis of rotation is understood to mean the change in the axial position in the direction of the axis of rotation that occurs with the change in position in the circumferential direction. When considering the gradient, the end areas of a projection or cam are preferably disregarded, because there a change in the width and/or height of the projection/cam can occur, which produces a local change in gradient, but is particularly irrelevant for the actual function of the respective element is. The gradient, e.g. the constant gradient or other gradient courses described below, preferably means the gradient of the course of the reference elements between their end regions, in particular where the width viewed perpendicularly to the direction of extent is constant.

In such an embodiment, the retaining projection has a thread-like function, at least in the area of its non-zero pitch, since the rotation of the closure cap and the resulting movement of the cam along the retaining projection in the gripping position during a closing rotary movement causes the closure cap to is further pulled onto the pouring spout, in particular until the cam or the closure cap reaches a stop with another element.

In all possible embodiments of the invention, the cam can be essentially circular or at least symmetrical, in particular when the cam is viewed perpendicularly to the lateral surface, and thus have no distinct longitudinal extension direction on the inner lateral surface of the closure cap.

On the other hand, it is particularly preferred in all possible versions if the cam also has an elongate course in the circumferential direction around the has axis of rotation. In this case, in a possible embodiment, which can in principle be combined with all embodiments, the cam can have a gradient of the amount ZERO. Preferably, the cam or the longitudinally extended course of the cam can have a slope in the direction of the axis of rotation, in particular over its entire extent can have a constant slope other than ZERO, preferably the amount, in particular also the sign, with the slope of the retaining projection overall or at least corresponds to the gradient of a partial area of the holding projection, in particular a partial area which lies on the end area of the retaining projection lying in the opening rotation direction and/or closing direction of rotation or which corresponds to the overall inclination of the guide projection or at least to the inclination of a partial area of the guiding projection, in particular a partial area , which lies on the end region of the guide projection lying in the opening rotation direction and/or closing rotation direction. A functionality can preferably be developed at least in regions between cam and retaining projection or cam and guide projection, such as between an internal thread flank and an external thread flank.

In all possible embodiments of the invention, a cam can preferably have a slope which corresponds to the slope of the guide projection or a region of the guide projection and/or which corresponds to the slope of the holding projection or a region of the holding projection, in particular that which is axially opposite to the cam when the closure cap is completely closed is closed or when the cam is in the closing direction of rotation at the end of the guide link.

Provision can preferably be made for the angular extent of a holding projection in the circumferential direction, preferably also the angular extent of a cam, to be less than 170 degrees, preferably less than 110 degrees, preferably less than 100 degrees, more preferably less than or equal to 90 degrees. The angular extension in the circumferential direction is particularly preferred same size or smaller for a cam than for a retaining lug. It is thus revealed that the closure cap can already be completely opened or closed by a user with angular rotations in accordance with the above information. A user can thus handle the closure cap without having to move his fingers, in particular at least substantially with a quarter turn.

A further preferred embodiment of the above-mentioned first embodiment provides that the area of the guide projection that has the greater slope compared to the holding projection, viewed in the opening direction of rotation, lies after an area of the guide projection that has the same slope as the holding projection. The gradient value of the guide projection is therefore increasing when viewed in the opening direction of rotation, in particular it changes between two values, namely the value of the gradient of the retaining projection and a comparatively larger value, which preferably remains the same up to the end of the guide projection. The two areas with different slopes are preferably connected by an area with a steadily increasing slope.

Provision can be made such that during an opening rotary movement, the cam is moved more strongly through the area of increased gradient on the guide projection in the direction of the removal opening, as a result of which the axial removal of the closure cap from the pouring spout is initiated, which can be felt in particular by the user because the cam is off has come out of the engaging position and the closure cap can then be pulled off axially without turning. Furthermore, the steeper gradient with a constant transition to the same gradient as in the case of the retaining projection facilitates the transition from a purely axial placement movement to a rotary movement when the closure cap is placed and closed.

Particularly preferably, it can be provided in the first embodiment mentioned that the guide projection, viewed in the circumferential direction, has at least a partial region opposite to that which engages behind it Position located cam is arranged, in particular the guide projection is arranged at least in a partial area at the same axial positions as the cam in the holding projection engages behind position, in particular shortly before it leaves the engages behind position. As a result, the cam automatically comes into contact with the guide projection during an opening rotary movement, in particular if this contact is not permanent, which may be preferable, and is then guided further by the guide projection. Provision is particularly preferably made for this partial area to be that area of the guide projection which has the same slope as the holding projection.

Thus, preferably during an opening rotary movement, the cam is transferred from contact with the holding projection into contact with the guide projection and during a closing rotary movement it is transferred in the reverse order. The closing rotation and the opening rotation take place before and after the contact transition, in each case at least in some areas with the same pitch, in particular during an opening rotation movement, until the cam on the guide projection passes into the area of greater pitch.

A second preferred embodiment can provide for the retaining projection to have a partial area in its extension over the lateral surface of the pouring spout that has a smaller incline than a partial area of the retaining projection lying next to it in the direction of opening rotation. This area of lower slope may have a zero slope. During a closing rotation, the cap is initially pulled more strongly onto the pouring spout by the area with a greater incline of the holding projection than in the partial area with a lesser incline, in which there is no longer any axial movement of the cap at an incline of ZERO.

In this second embodiment, it is provided that viewed in the direction of placement of the cap, axially at least behind the partial area with a smaller pitch, in particular axially behind the partial area with a zero pitch associated guide projection is arranged, which has the same pitch as the portion of the retaining projection with the lower pitch.

This guide projection can have a width that is less than the holding projection, at least in its partial area with a smaller incline. A guide link is thus produced which is accessible via an at least predominantly axially extended passage area for the cam.

Viewed in the circumferential direction of the lateral surface of the pouring spout, this associated guide projection can only be located axially behind the partial area of the holding projection with the lower gradient, but not behind the partial area that rises more sharply. During a closing rotary movement, the cam, in the position in which it has already gripped behind the holding projection, is moved along the more steeply rising partial area and the cap is pulled onto the pouring spout. The cam automatically gets into the guide slot.

Provision can preferably be made for a cam extending in the circumferential direction to have the same pitch as the partial area of the holding projection with the smaller pitch and/or as the associated holding projection. In particular, the cam can have a gradient of ZERO.

A further preferred embodiment of the first and second embodiment, or of all possible embodiments, can provide that at the end of the retaining projection lying in the closing direction of rotation of the closure cap, viewed in the mounting direction of the closure cap, a rotary stop limiting the rotation of the closure cap when closing is arranged axially behind the retaining projection which protrudes radially outwards from the outer lateral surface of the pouring spout. As a result, the range of rotation when closing can be limited, in particular when closing by a user.

This rotation stop can connect the holding projection and an associated guide projection, in particular in the axial direction. Provision can be made for a respective cam in the cap to have a stop surface, in particular a planar stop surface, at one of its ends which interacts with the rotary stop, preferably perpendicular to the lateral surface of the pouring spout or also at an angle > 0 degrees and not equal to 90 degrees lies to the lateral surface.

In all possible embodiments, it can also be provided that a cam has, on its flank pointing to the guide projection, a stop surface that interacts with the guide projection, in particular a flat stop surface, preferably perpendicular to the lateral surface of the pouring spout or also at an angle > 0 degrees and not equal to 90 degrees lies to the lateral surface.

In a preferred embodiment of all possible embodiments, the invention can provide that when the closure cap is first mounted on the pouring spout, the closure cap can be pushed onto the pouring spout without rotating it in the axial direction and the cam of the closure cap can be pushed axially over the holding projection into the position that engages behind the holding projection is manageable. For example, this is facilitated by the fact that the retaining projection is arranged on the hollow spout and the retaining projection can thus be displaced radially inwards by the force exerted by the cam.

Preferably, the axial sliding can also be facilitated in that the minimum diametrical distance between two diametrically opposite cams is greater than the outer diameter of the lateral surface of the pouring spout and is smaller by a predetermined amount than the maximum diametrical distance between two diametrically opposite retaining projections, in particular the distance from their highest points above the lateral surface.

The predetermined dimension can correspond, for example, to 50% to 150%, preferably 75% to 125%, more preferably 90% to 110% of the height of the holding projection above the outer lateral surface of the pouring spout. At a level of e.g. 100% the height of the retaining projection corresponds to the clearance between the cam and the lateral surface of the pouring spout with a uniform gap, thus 50% of the height of the retaining projection above the lateral surface. The retaining projection is thus engaged behind by the cam in this embodiment over part of its height, in the specific example only 50%. A correspondingly smaller displacement of the retaining projection is required, which makes it easier to slide it over axially.

The invention can furthermore preferably provide in all possible embodiments, in particular the first and second embodiment described, that in the direction in which the closure cap is placed on, an area of at least one guide projection or an area of at least one associated guide projection is arranged at least partially axially behind the retaining projection with an axial distance. in particular which has the same slope as the retaining projection or a region of the retaining projection which projects radially outwards from the outer lateral surface of the pouring spout and extends on the outer lateral surface in the circumferential direction around the axis of rotation, with which the axial movement of the cam of the closure cap at a axial fitting of the closure cap onto the pouring spout without rotation, after the cam has passed over the retaining projection.

In this embodiment, the guide projection, with its area lying axially behind the retaining projection, not only guides the cam when a user opens or closes the closure cap by turning it, but also limits the possible axial movement range during initial assembly if this is achieved by purely axial movement Postponement done.

The second embodiment mentioned can preferably be further developed in that the end of each holding projection of two diametrically opposite holding projections, which is in the closing direction of rotation, is adjoined by a further guide projection, which is functionally assigned to the diametrically opposite holding projection and one Has a slope that is greater than the slope of the retaining projection at its end region lying in the closing direction of rotation.

A retaining projection, which continues into the unassigned guide projection, can form a projection on the lateral surface of the pouring spout over which a cam of the cap can slide along on the side of this projection pointing towards the dispensing opening during a closing rotary movement and at the end of the unassigned one Guide projection is guided in the direction under the diametrically opposite retaining projection. With regard to its guiding function in a guide link, this guiding projection is assigned to a holding projection, that is, to the holding projection that is diametrically opposite in each case.

The projection formed from the holding projection and the continued guide projection has three consecutive areas in the circumferential direction, with adjacent areas having different pitches.

A development of the invention can preferably provide that a retaining ring is arranged at the lower open end of the closure cap, which is connected in one piece to the closure cap via at least one retaining strap, preferably two retaining straps, with a respective retaining strap in the unopened original state of the closure cap in the axial direction between the closure cap and the retaining ring, and extends in the circumferential direction around the axis of rotation, in particular wherein the outer lateral surface of the retaining ring is arranged flush with the outer lateral surface of the respective retaining strap, and interacting latching means are arranged on the retaining ring and on the spout, in particular its spout , by means of which the retaining ring is attached to the spout/pouring spout, in particular after initial assembly, and in particular remains attached when the closure cap is opened.

In such an embodiment, the closure cap remains captively attached to the spout, with the at least one in the originally unopened state Retaining strap is integrated into the closure cap construction and does not protrude in a disturbing manner. It is integrated into the construction between the retaining ring and the closure cap and is preferably only released from the cap construction when it is opened for the first time.

Provision is preferably made for a respective retaining strap to have a plurality of breakable bridges between a connection point on the retaining ring and a connection point on the closure cap, by means of which the retaining band is attached to the retaining ring and/or the closure cap. It is initially held in position by the intact bridges, in particular in alignment with the surface of the retaining ring. When the closure cap is opened, the closure cap rotates and moves axially, with the retaining ring locked on the spout remaining on it and the bridges breaking open under the applied force.

A preferred design can provide for a respective breakable bridge to be designed to taper in the axial direction, preferably in a direction from the retaining band to the retaining ring and/or to the closure cap, in particular with a constant thickness in the radial direction. The bridges therefore break close to the retaining ring and close to the closure cap, and therefore remain with their substantial length on the retaining band. Thus, no significant residual bridge comes into contact with a user's lips should the lips contact the retaining ring.

Provision can preferably also be made for a respective retaining strap to have a course pointing in the axial direction towards the retaining ring at the end area in front of the connection point on the closure cap and at the end area in front of the connection point on the retaining ring. In particular, it can be achieved that two retaining straps run in their area of extension between the end areas in a common plane perpendicular to the axis of rotation.

A locking construction between the retaining ring and the pouring spout or its pouring spout preferably provides that on the retaining ring of the closure cap as a locking means on its inner lateral surface at least one in the circumferential direction extended latching projection projecting radially inwards from the inner lateral surface and a latching ring surrounding the spout and projecting radially outwards from the outer lateral surface of the pouring spout is arranged as latching means on the pouring spout, with the latching ring being separated from the at least one latching projection in the direction in which the closure cap is placed on can be gripped behind.

The latching projection can be designed as a bead, in particular in a cross section parallel through the axis of rotation can be raised convexly radially inwards over the inner lateral surface of the retaining ring. The distance between diametrically opposite areas of one or more locking projections is preferably smaller than the outer diameter of the locking ring.

It can preferably be provided that a number of locking projections corresponding to the number of retaining straps is provided on the retaining ring, with each retaining strap being assigned its own locking projection, which extends between the connection points of the retaining strap, in particular which has an extension in the circumferential direction over an angle, which is smaller than the angular spacing of the connection points of the retaining strap, preferably which is greater than the angle over which the regions of the retaining straps lying in the same plane are extended.

In one possible embodiment, the retaining ring can be rotatably fastened to the pouring spout, in particular to its pouring spout. In this embodiment, the bridges are essentially only broken by the axial force generated when the closure cap is moved.

In contrast, it is preferably provided that the retaining ring is fixed to the spout in a rotationally inhibited manner, in particular in a rotationally fixed manner, by means of engagement elements which interact between the retaining ring and the spout, in particular its spout. Such engagement means can preferably by interlocking teeth on the retaining ring, preferably radially inside the retaining ring, and on the locking ring, preferably radially outside the locking ring, or be formed by webs extending axially away from the locking ring and the locking projections. The engagement means preferably engage automatically when the closure cap is pushed onto the pouring spout purely axially without rotation during initial assembly. For this purpose, it can be provided that, for example, the teeth on one of the elements of the retaining ring and spout are distributed over a larger angular range than on the other. In the design with webs and the locking projections, the length of the locking projections is selected such that they fit between two adjacent webs in the circumferential direction and cannot be rotated beyond this when the cap is rotated.

A further preferred embodiment can provide for a stop to be provided on the pouring spout, preferably on its pouring spout, in particular on its end remote from the removal opening, with which the axial push-on width of the closure cap is limited, in particular when it is pushed on axially without rotation during initial assembly .

The stop is preferably designed as a stop ring, which extends in the circumferential direction around the pouring spout, preferably protrudes radially outwards in the radial direction from the pouring spout.

More preferably, the stop ring can be arranged behind the aforementioned locking ring in the axial mounting direction of the closure cap, in particular with the stop ring having a larger diameter than the locking ring. The lower free annular end face of the retaining ring can thus be placed on the surface of the stop ring pointing to the removal opening of the pouring spout when the cap is pushed on axially, but in particular also when the cap is rotated when closing, and limit the axial range of movement, preferably alone or in cooperation with the guide projection , if this interacts with the cam in a limiting manner. The above-mentioned webs, which prevent the retaining ring from rotating, can extend between the locking ring and the stop ring.

A preferred embodiment can also provide that the distance between the removal opening of the pouring spout and the stop ring, in particular its surface facing the removal opening, is smaller than the distance between the ring end face of the retaining ring and the inner surface of the lid of the closure cap, in particular at least in the area in which the annular end face of the pouring spout faces the inside surface of the lid at the dispensing opening.

Due to the gap areas between the at least one retaining band and the retaining ring on the one hand and the closure cap on the other side, despite the breakable bridges bridging the gap area, the closure cap can be axially compressed and thus axially shortened when the closure cap is pushed on purely axially without turn onto the pouring spout. The aforementioned dimensional difference ensures that even with axial compression of the closure cap, sufficient axial force can be applied during initial assembly that the locking means acting between the pouring spout and the retaining ring securely engage with one another, in particular the locking projection radially on the inside of the retaining ring securely over the slips over the outer edge of the locking ring.

Preferred embodiments of the pouring device according to the invention are explained with reference to the figures. In this case, FIGS. 1 to 5 show configurations of the aforementioned first embodiment, so that the invention is described below jointly for these figures. FIG. 6 shows a second embodiment of the spout, which can be combined with the caps of FIGS. 2 to 5 and 7. Figure 7 shows an alternative cap that can be combined with the first and second embodiment, i.e. with the designs according to all figures, preferably with the second embodiment of Figure 6 The pouring device comprises a spout 1 with a pouring spout 2 surrounding an internal channel. An axis of rotation 3 runs through the pouring spout 2, about which a closure cap 4 of the pouring device can be rotated.

In the embodiment shown, the spout 1 has a fastening area 6 on the end facing away from the removal opening 5 of the pouring spout 2, which is preferably designed as a boat-shaped weld-in part. With this fastening area 6, the spout 1 can be tightly fastened between two foil layers of a foil bag, as is generally known in the prior art for such fastening areas 6. The attachment area 6 of the type shown here is not an essential element of the invention and can also be designed differently.

Between the pouring spout 2 and the closure cap 4, closure elements are arranged on the lateral surfaces of these elements that face one another, in order to be able to attach the closure cap to the pouring spout by a user and to be able to remove it again.

According to FIG. 2, the closure cap 4 has a cam 7 on its inner lateral surface 7, which here extends in the circumferential direction, i.e. around the axis of rotation 3, over a specific angular range, in particular less than 360 degrees, in particular less than in conventional threads than 100 degrees, preferably less than or equal to 90 degrees. The cam protrudes in the radial direction inwards from the lateral surface 7, in particular in the manner of an inwardly convex bead. The extension between the end regions 8a of the cam 8 is designed with a constant gradient greater than zero relative to the axis of rotation 3 . At the end regions 8a, the width and/or height above the inner lateral surface 7 can decrease towards the end. In a preferred embodiment, the end region 8a in the closing direction can also be designed as a stop, in particular at an angle, in order to interact with a rotary stop 20 . Between the end regions 8a, the cam can have the same width and height everywhere, in particular have the same cross section. The gradient can preferably be greater than zero and less than 45 degrees, preferably less than 30 degrees, more preferably less than 25 degrees, in particular when viewing the cam 8 in a projection perpendicular to the axis of rotation.

The cam 8 shown in FIG. 2 can only be seen at one point on the inner lateral surface 7, but is also present exactly diametrically opposite, in particular in such a way that the cams 8 are rotationally symmetrical by 180 degrees.

The cam 8 interacts with the holding projection 9 on the outer lateral surface 10 of the pouring spout 2 . In this interaction, the cam 8 can engage behind the retaining projection 9 in the direction in which the closure cap 4 is placed, that is to say along the axis of rotation 3 viewed from the removal opening 5 in the direction of the fastening area 6 . In such an engaging position, the cam 8 is fixed axially, so that the closure cap 4 can no longer be pulled off the pouring spout. The retaining projection extends in the circumferential direction about the axis of rotation 3 over a certain angular range and has a slope that matches the cam 8 between its end regions 9a. The extension between the end regions 9a of the retaining projection 9 is designed with a constant slope greater than zero relative to the axis of rotation 3 . At the end regions 9a, the width and/or height over the outer lateral surface 10 can decrease towards the end.

Between the end regions 9a, the retaining projection 9 can be the same width and height everywhere, in particular have the same cross section. The retaining projection can have a groove 9b in its surface along its extent, in particular in which the surface of the cam 8 can be received in a form-fitting manner.

In the embodiment shown here, a guide projection 11 is also provided, which extends on the lateral surface 10 between its end regions 11a. At the end regions 11a, its width and/or height over the outer lateral surface 10 can decrease towards the end. Between In the end regions 11a, the guide projection 11 can be of the same width and height everywhere, in particular have the same cross-section.

Viewed in the direction of attachment, the guide projection 11 has a first region 11b, at least in sections, axially at a distance behind the retaining projection 9 and a second region 11c and its end region 11a in the opening direction of rotation, to the right in the figure, next to the one lying in the opening direction of rotation End region 9a of the retaining projection 9. The end regions 9a and 10a of the two associated projections 9 and 10 are at least partially in the same axial position interval. In the first area 11b the guide projection has the same slope as the holding projection 9. In the second area 11c, which follows the first in the opening direction of rotation, the guide projection 11 has a greater slope than the holding projection.

Analogously to the cam 8 of the closure cap 4, two diametrically opposite holding projections 9 and guide projections 11 are arranged on the pouring spout 2, in particular arranged 180 degrees rotationally symmetrically.

Figure 1B in particular makes it clear that between the end area 9a of the holding projection 9 and the end area 11a/area 11c of the guide projection 11 there is a passage area 12, shown hatched here, which is the entry/exit of a guide slot formed between the holding projection 9 and the guide projection 11 represents, in which the cam 8 is guided. The cam 8 is designed with its cam length viewed in the circumferential direction in such a way that it can pass through the passage area 12 but cannot reach the position that engages behind through the other areas. In particular, the cam length is greater than the distance, viewed in the circumferential direction, between the end region 11a lying in the opening direction of rotation and the end region 9a' of the unassigned holding projection 9' lying in the closing direction of rotation. During an opening rotation, the cam 8 is moved out of contact with the retaining projection 9, in particular its groove 9b, and comes into contact with the first region 11b of the guide projection 11 if contact with it is not continuous. According to a thread function, the cam 8 is initially continued with a constant slope until it is transferred to the guide projection 11 in the area 11c with a larger slope. As a result, the closure cap 4 is lifted in the removal direction and is released axially because the cam is then in the passage area 12 . The closure cap 4 can then be pulled off axially without further rotation.

Through the action of retaining projection 9 and guiding projection 11, the construction of the pouring device has a bayonet-like closure, as opposed to threads. The area 11c with a greater pitch than the retaining projection 9 also clearly distinguishes it from 2-start threads, since the greater pitch generates a progressive axial stroke when opening, which on the one hand makes opening easier, but also gives the user a haptic impression , indicating that the end cap is axially exposed and can be pulled off. This functionality due to the greater gradient is independent of the specific embodiment shown in the figures.

FIG. 1C shows an embodiment which is supplemented compared to FIG. 1A, according to which a rotary stop 20 is provided on the end of the holding projection 9 lying in the closing direction of rotation. The cams of the cap can hit this rotary stop when closing, so that the range of rotation of the cap is restricted.

So that the released closure cap 4 does not go untrue, it is connected by two retaining straps 13 to a retaining ring 14 which is arranged at the open end of the closure cap 4, as shown in FIG. Figure 3 shows the original not yet opened state of the closure cap 4 in which the retaining straps 13 between the retaining ring 14 and the open end of the Cap 4 are arranged. The end regions 13a of the retaining straps 13 are led out of a common plane perpendicular to the axis of rotation 3, in which the retaining straps 13 run between their end regions 13a, in the direction of the retaining ring 14 and bend towards the connection point 13, in particular the one perpendicular to the ring plane of the retaining ring 14 Bridge includes.

Between the end regions 13a and/or in the end region 13a, each of the two retaining straps 13 is connected with breakable bridges 15 to the retaining ring 14 on one side and to the closure cap 4 on the other side. In this way, each retaining strap 13 is originally held in position and an axial force can be exerted on the retaining ring 14 via the bridges 15 in order to mount it on the pouring spout 1, in particular its pouring spout 2, during initial assembly.

For this purpose, the retaining ring 14 has locking projections 16 extending in the circumferential direction on its inner lateral surface, which protrude radially inward from the lateral surface and extend in the case of both retaining straps 13 to below their respective end region 13a. A latching projection 16 is thus assigned to each retaining strap 13 .

During initial assembly, regardless of whether this is done by turning or simply sliding the closure cap 4 onto the pouring spout 2, an axial force is generated on the retaining ring 14, which drives the locking projection 16 behind the locking ring 17, so that the locking projection 16 moves behind the locking ring 17 grabs. The retaining ring 14 is then axially fixed to the spout 1 and can no longer be pulled off, at least not by normal forces that arise when opening.

A stop ring 18 is arranged axially in the direction of attachment of the closure cap 4 at a distance behind the locking ring 17, which has a larger outer diameter than the locking ring 17 of the retaining ring 14, in particular when the closure cap 4 is pushed on axially. FIG. 5 visualizes the inner height H of the closure cap construction between the annular end face 14a and the region 4a on the inner surface of the closure cap cover 4, which is opposite the annular end face around the removal opening 5. This height H is preferably chosen so that it is greater than the distance between the removal opening or its annular end face and the surface of the stop ring 18 that faces the removal opening 5 .

The result of this is that the inner height H does not impede the exertion of force on the latching projection 16 even with an axially compressed closure cap 4 when it is pushed on axially. The inner cover surface therefore also has no sealing function with respect to the removal opening 5 or its annular end face. The sealing function is achieved by a sealing element 19 on the inside of the cover surface of the closure cap 4 which acts radially from the inside on the inner lateral surface of the pouring spout 2 .

FIG. 5 shows the closure cap 4 in an open position. The closure cap is connected to the retaining ring by the two retaining straps 13 even after it has been opened and is captively attached to the spout 1 via this, at least as long as the retaining straps 13 are not destroyed.

FIG. 6 shows a second embodiment of a pouring device, only the spout being visualized. The cap of Figures 2 to 5 can be combined with this spout.

In comparison to the first embodiment, the holding projection 9 shown in plan view is designed here with partial areas 9c and 9d, the partial area 9c having a lower slope, in particular a ZERO slope. Axially behind this in the direction of placement of the cap is an associated guide projection 11 with the same pitch as the partial area 9c and forms with it a guide link in which the cam of the cap can enter and then move into a position that engages behind the holding projection 9 or its area 9c located. According to the invention, the gradients of the guide projection 11 and partial area 9d of the holding projection 9 are different, in particular, which makes it clear that the guide projection 11 and retaining projection 9 do not interact like conventional thread flanks of the prior art.

At the end of the holding projection 9 lying in the closing direction of rotation, there is a rotary stop 20 which connects the holding projection 9 and the guide projection 11 axially behind it. A cam can hit this rotary stop 20, as a result of which the range of rotation is limited.

The retaining projection 9 continues at its end in the closing direction of rotation, i.e. on the left adjoining the partial area 9c, in a guide projection 11.2' that is not assigned to this retaining projection 9, which has a different pitch from partial area 9c, in particular has the same pitch as partial area 9d can. The guide projection 11.2', on the other hand, is associated with the holding projection 9', which is arranged diametrically opposite the holding projection 9.

A cam, which is formed from the projections 11.2', 9c and 9d during a closing rotary movement in this view at the top via the projection construction, is guided via the guide projection 11.2.' down and thus under the retaining projection 9 ', which is identical to the retaining projection 9 out.

Deviating from the other figures, this figure 6 also shows an embodiment in which webs 21 extend in the axial direction between the locking ring 17 and the stop ring 18 . A latching projection 16 on the retaining ring 14 of the cap can engage between two adjacent webs 21, in particular two adjacent webs 21 at a large distance, thereby preventing the retaining ring 14 from rotating when the cap is rotated.

FIG. 7 shows an embodiment of a cap 4 which can preferably be used together with the second embodiment according to FIG. 6, but in principle also with the first embodiment. In contrast to the cap of FIG. 3, FIG. 7 shows that the cam 8 has a stop surface 8b at its one end, which can interact with the rotary stop 20. This stop surface 8b is preferably planar and more preferably arranged perpendicularly to the inner lateral surface 7 of the cap or also to the lateral surface of the pouring spout 2 .

A stop surface 8c can also be arranged on the side/underside of the cam 8 pointing towards the cap opening or, in the application, towards the guide projection 11, which interacts in a contacting manner with the guide projection 11, in particular if the cap is pushed onto the spout purely axially without turning, as a result the opening distance is limited. The stop surface 8c can preferably be flat, in particular perpendicular to the inner lateral surface 7 of the cap or also to the lateral surface of the pouring spout. In particular, the stop surface 8c can extend over more than 50% of the length of the cam.

Provision can preferably be made here for the cam 8 extending in the circumferential direction to have the same pitch as the guide projection 11 and/or the partial area 9c of the holding projection, in particular a pitch of the amount ZERO.

Figure 7 also shows that the locking projections 16 on the inside of the retaining ring 14 of the cap 2 can have stop surfaces 16a at the respective ends, which interact with the webs 21 in contact, in particular which ensures that the retaining ring 14 does not rotate when the cap 4 rotates is held. The stop surfaces 16a can preferably be planar, in particular perpendicular to the inner lateral surface of the retaining ring 14.

Claims

Claims Casting device comprising a. a pouring spout (1) which is connected to a container or at least can be connected to a container and which has a pouring spout (2), b. a closure cap (4) with which the pouring spout (2) can be closed and opened, c. cooperating closure elements (8, 9, 11) being arranged on the outer lateral surface (10) of the pouring spout (2) and on the inner lateral surface (7) of the closure cap (4), by means of which the closure cap (4) and the pouring spout (2 ) can be connected to one another and detached from one another by rotating the closure cap (4) about an axis of rotation (3) running through the pouring spout (2), characterized in that the cooperating closure elements (8, 9, 11) are formed by d. at least one cam (8) on the closure cap (4) which protrudes radially inwards from the inner lateral surface (7) of the closure cap (4), and e. at least one retaining projection (9) on the pouring spout (2), which protrudes radially outwards from the outer lateral surface (10) of the pouring spout (2) and extends on the outer lateral surface (10) in the circumferential direction around the axis of rotation (3), f. the cam (8) being able to be brought into a position which engages behind the retaining projection (9) and g. a guide projection (11) is assigned to the holding projection (9), which projects radially outwards from the outer lateral surface (10) of the pouring spout (2) and extends over the lateral surface (10), the holding projection (9) and the The guide projection (11) has different gradients in the direction of the axis of rotation (3), at least in certain areas, h. between the retaining projection (9) and the associated guide projection (11) a guide link is formed through which the cam (8) of the closure cap (4) can be guided into the position engaging behind the retaining projection (9). Pouring device according to Claim 1, characterized in that the end region (9a) of the retaining projection (9) lying in the opening direction of rotation, in particular the region in which its height above the lateral surface (10) of the pouring spout (2) in the direction of the end of the retaining projection ( 9) is decreasing, is arranged at least in regions on the outer lateral surface (10) of the pouring spout (2) in the same axial position interval as the guide projection (11), in particular as its end region (11a) lying in the opening direction of rotation, in particular the region (11 a), in which the height of the guide projection (11) above the lateral surface (10) of the pouring spout (2) decreases towards the end of the guide projection (11), whereby between the retaining projection (9) and the associated guide projection (11). in the circumferential direction extending passage area (12) is formed, through which the cam (8) of the closure cap (4) can be guided into the guide slot, in particular into the position engaging behind the holding projection (9). Pouring device according to one of the preceding claims, characterized in that viewed in the axial direction of the removal opening (5), the end region (11a) of the guide projection (11) lying in the direction of rotation of the opening does not extend beyond the end region (9a) of the holding projection (9) lying in the same direction. protrudes, in particular the end region (11a) of the guide projection (11) lying in the opening direction of rotation projects back axially in relation to the end region (9a) of the holding projection (9) lying in the same direction. Pouring device according to one of the preceding claims, characterized in that the closure cap (4) has two cams (8), preferably two diametrically opposite cams (8) and the pouring spout (2) has two retaining projections (9), preferably two diametrically opposite retaining projections ( 9), each retaining projection (9) being assigned a respective guide projection (11), in particular the two guide projections (11) being diametrically opposite one another. Pouring device according to one of the preceding claims, characterized in that the respective cam (8) of the closure cap (4) can only be guided into the guide slot through a passage region (12). Pouring device according to Claim 4 or 5, characterized in that each of the cams (8) extends in the circumferential direction over a cam length on the inner lateral surface (7) of the closure cap (4), the cam length being greater than the distance between the guide projection ( 11) and the other non-assigned holding projection (9'), in particular the length of the cam is selected to allow passage through the passage area (12), preferably the length of the cam is smaller than the distance, viewed in the circumferential direction, between the end of the holding projection (9) and the associated guide projection (11). Pouring device according to one of the preceding claims, characterized in that the retaining projection (9) has a slope in the direction of the axis of rotation (3), in particular has a constant slope over its entire extent, preferably with the cam (8) also having a slope in the direction of the axis of rotation (3), in particular has a constant pitch over its entire extent, preferably the amount, in particular also the sign, corresponds to the pitch of the retaining projection (9) in at least a partial area (9d) of its extent. Pouring device according to one of the preceding claims, characterized in that a region (11 c) of the guide projection (11) with a greater slope than the retaining projection (9) viewed in the opening direction of rotation is located after a region (11 b) of the guide projection (11). , which has the same slope as the retaining projection (9), in particular the two areas (11b, 11c) are connected by an area with a steadily increasing slope. Pouring device according to claim 8, characterized in that the guide projection (11) is arranged at least with a partial area (11b) viewed in the circumferential direction opposite to the cam (8) located in the engaging position, in particular the guide projection (11) at least in one Section (11b) is arranged at the same axial positions as the cam (8) in the position engaging behind the holding projection. Pouring device according to one of the preceding claims, characterized in that the retaining projection (9) in its extension over the lateral surface of the pouring spout (2) has a partial area (9c) which has a smaller incline than an adjacent partial area (9d ) of the retaining projection (9), being viewed in the mounting direction of the cap (4) axially at least behind the partial area (9c) with a smaller pitch, in particular axially behind the Partial area (9c) with a ZERO pitch, an associated guide projection (11) is arranged, which has the same pitch as the partial area (9c) of the retaining projection (9) with the lower pitch, in particular with a cam (8) extending in the circumferential direction having the same pitch has, like the partial area (9c) of the holding projection (9) with the smaller incline and/or like the associated holding projection (11). Pouring device according to Claim 10, characterized in that a further guide projection (11.2') which lies in the closing direction of rotation of each holding projection (9) of two diametrically opposite holding projections (9, 9') adjoins the diametrically opposite holding projection (9'). ) is functionally assigned and has a slope that is greater than the slope of the retaining projection (9) at its end region (9c) lying in the closing direction of rotation, in particular at the partial region (9c) with a smaller slope. Pouring device according to one of the preceding claims, characterized in that at the end of the retaining projection (9) lying in the closing direction of rotation of the closure cap (4), viewed in the mounting direction of the closure cap (4) behind the retaining projection (9), the rotation of the closure cap (4 ) is arranged limiting rotation stop when closing, which protrudes radially outwards from the outer lateral surface (10) of the pouring spout (2). Pouring device according to one of the preceding claims, characterized in that when the closure cap (4) is first mounted on the pouring spout (2), the closure cap (4) can be pushed onto the pouring spout (2) without rotation in the axial direction and the cam (8) of the closure cap (4) can be guided axially over the holding projection (9) into the position engaging behind the holding projection (9), in particular with radial displacement of the holding projection (9) inwards, preferably with the minimum diametrical distance between two diametrically opposite cams (8) is larger than the outer diameter of the lateral surface (10) of the pouring spout (2) and is smaller by a predetermined amount than the maximum diametrical distance between two diametrically opposite retaining projections (9), the predetermined amount being 50 % to 150%, preferably 75% to 125%, more preferably 90% to 110% of the height of the holding projection (9) above the outer lateral surface (10) of the pouring spout (2). Pouring device according to one of the preceding claims, characterized in that in the direction in which the closure cap (4) is placed on, a guide projection (11) or a portion (11b) of the guide projection

(11) is arranged, in particular which has the same pitch as the holding projection (9) or a partial area (9c) of the holding projection (9) and/or as the at least one cam (8) which is projected from the outer lateral surface (10) of the pouring spout (2) protrudes radially outwards and extends on the outer lateral surface (10) in the circumferential direction around the axis of rotation (3), with which the axial movement of the cam (8) of the closure cap (4) when the closure cap (4 ) is limited to the pouring spout (2) without rotation after the cam (8) has passed over the retaining projection (9). Pouring device according to one of the preceding claims, characterized in that a. a retaining ring (14) is arranged at the lower open end of the closure cap (4) and is integrally connected to the closure cap (4) via at least one retaining strap (13), preferably two retaining straps (13), b. wherein a respective tether (13) in the unopened

Original state of the cap (4) in the axial direction is arranged between the closure cap (4) and the retaining ring (14) and extends in the circumferential direction around the axis of rotation (3), in particular the outer lateral surface of the retaining ring (14) being flush with the outer lateral surface of the respective retaining strap (13). is arranged, and c. on the retaining ring (14) and on the pouring spout (1), in particular on the pouring spout (2), interacting latching means (16, 17) are arranged, by means of which the retaining ring (14) on the pouring spout (1), in particular on the pouring spout (2), in particular after an initial assembly, remains attached, in particular when the closure cap (4) is opened. Pouring device according to Claim 15, characterized in that a respective retaining strap (13) has a plurality of breakable bridges (15), in particular axially extending breakable bridges, between a connection point (13b) on the retaining ring (14) and a connection point (13b) on the closure cap (4). (15), by means of which the retaining strap (13) is attached to the retaining ring (14) and/or the closure cap (4). Pouring device according to Claim 16, characterized in that a respective breakable bridge (15) tapers in the axial direction, preferably tapers in a direction from the retaining band (13) to the retaining ring (14) and/or to the closure cap (4), in particular with a constant thickness in the radial direction. Pouring device according to one of the preceding claims 15 to 17, characterized in that a respective retaining strap (13) on the end area (13a) in front of the connection point (13b) on the closure cap (4) and on the end area (13a) in front of the connection point (13b). the retaining ring (14) has a course pointing in the axial direction towards the retaining ring (14). Pouring device according to Claim 18, characterized in that two retaining straps (13) run in their area of extension between the end areas (13a) in a common plane lying perpendicular to the axis of rotation (3). Pouring device according to one of the preceding claims 15 to 19, characterized in that at least one locking projection (16) extending in the circumferential direction and projecting radially inwards from the inner lateral surface is arranged on the retaining ring (14) as locking means on its inner lateral surface and on the pouring spout (2nd ) a locking ring (17) surrounding the pouring spout (2) and projecting radially outwards from the outer lateral surface of the pouring spout (2) is arranged as the locking means, with the locking ring (17) detaching from the at least one locking projection in the direction of attachment of the closure cap (4). (16) can be gripped behind in a latching manner. Pouring device according to Claim 20, characterized in that a number of locking projections (16) corresponding to the number of retaining straps (13) is provided on the retaining ring (14), each retaining strap (13) being assigned its own locking projection (16) which lies between the connection points (13b) of the holding strap (13), in particular which extends in the circumferential direction over an angle which is smaller than the angular distance between the connection points (13b) of the holding strap, preferably which is greater than the angle over which they are in the same plane lying areas of the retaining straps (13) are extended. Pouring device according to one of the preceding claims 15 to 21, characterized in that the retaining ring (14) a. is rotatably attached to the spout (1), in particular to its spout (2), or b. on the spout (1) through between the retaining ring (14) and the

Spout (1), in particular its spout (2) cooperating engagement elements is secured in a rotationally inhibited manner, in particular rotationally proof, preferably with the engagement means being secured by intermeshing teeth on the retaining ring (14), preferably radially on the inside of the retaining ring (14), and on the locking ring (17), preferably radially on the outside of the locking ring (17), or by webs (21) extending axially away from the locking ring (17) and the locking projections (16) are formed. Pouring device according to one of the preceding claims, characterized in that a stop (18) is provided on the spout (1), preferably on its pouring spout (2), in particular on its end remote from the removal opening (5), with which the axial attachment width of the closure cap (4), in particular when it is pushed on axially without rotation during initial assembly. Pouring device according to Claim 23, characterized in that the stop (18) is designed as a stop ring (18) which extends circumferentially around the pouring spout (2), preferably protrudes radially outwards from the pouring spout (2). Pouring device according to Claim 24, characterized in that the stop ring (18) is arranged behind a locking ring (17) according to Claim 19 in the axial attachment direction of the closure cap (4), in particular the stop ring (18) has a larger external diameter than the locking ring (17) . Pouring device according to Claim 24 or 25, characterized in that the distance between the removal opening (5) of the pouring spout (2) and the stop ring (18), in particular its surface pointing towards the removal opening (5), is smaller than the distance (H) between the annular end face (14a) of the retaining ring (14) and the inner surface of the lid of the closure cap (4), in particular at least in the area (4a), in which the annular end face of the pouring spout (2) at the removal opening (5) is opposite the inner surface of the lid. Pouring device according to one of the preceding claims, characterized in that the cam (8) of the closure cap (4), in particular each of two diametrically opposite cams (8), has a stop surface (8b) for cooperation with a rotary stop (20) on the pouring spout (2nd ) and/or has a stop surface (8c) for cooperation with the guide projection (11).