Closure cap

Abstract

The invention relates to a closure cap (1) having a central axis (y), a circumferential cap wall (11) and a cap top (12), for a container (3) provided with a mouth (2), wherein the cap wall has a cap edge (13) facing away from the cap top and a retaining ring (14) is attached to the cap edge by means of two retaining strips (15, 16), wherein the retaining strips transition into the cap edge in a first and second attachment region (17, 18) and transition into the retaining ring in a third and fourth attachment region (19, 20), said retaining strips forming a permanent connection between the retaining ring and the closure cap even in the open state of the closure cap, wherein furthermore the retaining ring is designed in a circumferentially closed manner, with a connection region (21) between the third and fourth attachment region. In order to provide a closure cap which is advantageous for use, the invention proposes that the cap wall continues into a cap protrusion (29) between the first and second attachment regions in the direction of the central axis, facing away from the cap top, and the cap protrusion also has a protrusion length (f) relative to the cap edge, which protrusion length exceeds the dimension of a height (u') of a retaining strip, and that the cap protrusion has a protrusion region (30) projecting radially outwardly, wherein the connection region of the retaining ring extends below the cap protrusion.

Description

Description V closure cap field of technology

[0001] The invention relates to a closure cap with a central axis, a circumferential cap wall and a cap lid formed substantially perpendicular to the cap wall, for a container provided with an opening, wherein the cap wall has a lower cap rim facing away from the cap lid and a retaining ring is attached to the cap rim by means of two retaining bands, wherein the retaining bands transition into the cap rim in a first and a second attachment area and transition into the retaining ring in a third and a fourth attachment area, which retaining bands also form a permanent connection between the retaining ring and the closure cap when the closure cap is open, wherein the retaining ring is further formed circumferentially in a closed state, with a connection area between the third and fourth attachment areas of the retaining bands.

[0002] The invention further relates to a closure cap applied to the opening of a container, wherein the opening has one or more threads with several, preferably two, thread turns, wherein, facing away from an opening of the container, a first radial projection perpendicular to the central axis of the opening is formed below the thread turns, below which a second radial projection perpendicular to the central axis may be formed, optionally projecting radially outwards beyond the thread turns and the first radial projection, and wherein the retaining ring is secured in the closed state below the first radial projection, or, if a second radial projection is formed, between the first and the second radial projection. State of the art

[0003] Closure caps of the type in question are known, for example from WO 00 / 26 108 Al (US 6474491 Bl). Reference is also made, for example, to WO 2021 / 146 080 Al. These closure caps are used to close containers, for example, beverage bottles, and also, for example, plastic bottles made of polyethylene terephthalate (PET), whereby in one closed position the cap lid covers the opening. If the closure cap is designed as a screw cap, the cap wall engages with a thread on the opening side. By means of two retaining straps, the closure cap can be pivoted in the open position to a position that completely exposes the opening, whereby even in this open or pivoted open position the closure cap is held captive at the container opening by the retaining straps and the retaining ring.From the open position, the cap can be returned to the closed position. The opening and closing process can be repeated while maintaining the cap's attachment to the retaining ring. Summary of the invention

[0004] Based on the aforementioned prior art, the invention addresses the problem of providing a commercially advantageous closure cap.

[0005] This problem is initially solved with regard to the subject matter of claim 1, wherein the cap wall between the first and the second connection area continues in the direction of the central axis, away from the cap roof, into a cap projection, wherein the cap- the projection opposite the cap edge has a projection length which exceeds the height of a retaining band viewed in the direction of the central axis, and wherein the cap projection has a radially outward projecting projection area, wherein the connecting area of ​​the retaining ring runs below the cap projection.

[0006] With regard to the closure cap applied to the opening of a container, the problem can be solved by ensuring that the cap projection is so far forward and has such a projection length, viewed in the direction of the central axis, that in the open state the cap wall is supported by the cap projection below the threaded threads and above the first radial projection, and that the cap wall of the closure cap is also supported on the first circumferential radial projection in the open state.

[0007] According to the proposed design, a closure cap is created which, in the open position, is held stably in a user-friendly pivoting position, thus allowing the contents of the container to be poured out unimpeded. Due to the given length of the cap's projection and the radially extending protrusion beyond the cap's edge, a distance between the closure cap and the opening is achieved in the open position, essentially radial to the opening, while being supported at the container's mouth.

[0008] The projection area may have a sloping surface when viewed in cross-section. This sloping surface may extend inclined in one direction towards the cap roof, viewed from the central axis.

[0009] In further detail, the inclined surface can extend from the free end of the cap projection, or offset towards the cap roof. Preferably, this offset is small. Alternatively, the inclined surface can also extend significantly offset from the free end of the cap projection.

[0010] The inclined surface can extend so far that it ends approximately at the level of the cap wall. However, it can also extend only over a comparatively short section (length or vertical height, viewed along the central axis) of the cap projection, for example, over a section corresponding to one-third to one-twentieth, more preferably one-sixth to one-eighth, and furthermore preferably one-seventh of the length of the cap projection.

[0011] The inclined surface can have varying vertical heights along its circumference. Relative to a view of the cap wall, it can extend with a curved edge towards the cap wall. Its greatest length is likely to be located approximately at the midpoint of its circumference.

[0012] In a first closed position, the cap can be connected to the retaining ring via tear-off tabs to ensure authenticity; these tabs are preferably severed solely by unscrewing the cap during a first opening.

[0013] Securing the closure cap via the retaining ring below the first radial projection of the container, or in the case of a second radial projection between the two radial projections of the container, is preferably achieved by means of a feature on the inside of the retaining ring wall. Protruding elements that can form a barbed, pull-proof underhand grip, especially of the first radial protrusion.

[0014] The cap projection originates from an area between the first and second attachment points of the retaining straps to the cap edge and extends towards the retaining ring, specifically towards the connection area. The length of the cap projection relative to the cap edge can be approximately 1.5 to 3 times, or, for example, approximately 2 times, the height of a retaining strap as viewed along the central axis. Furthermore, the projection length can also be approximately 0.4 to 0.7 times, or, for example, approximately 0.45 to 0.55 times, the height of the retaining ring outside the connection area as viewed along the central axis.

[0015] The projection area of ​​the cap protrusion preferably extends radially outwards beyond the cap wall. This radial extension beyond the cap wall is preferably relatively small. The projection area can extend radially outwards beyond the cap wall by a projection dimension that corresponds approximately to 0.1 to 0.6 times, or for example, approximately to 0.11 to 0.014 times, or 0.035 to 0.045 times, the outer diameter of the cap wall outside the cap protrusion.

[0016] With regard to the projection area, it can at least partially be the inclined surface extending from the cap wall and sloping down to the free end of the projection area, which can form an obtuse angle of approximately 120 to 150 degrees to the central axis, or further, for example, approximately 135 degrees.

[0017] The free end of the projection area can be essentially linear in the circumferential direction, into which both the inclined surface and a lower surface of the projection area can directly merge. Alternatively, the projection area can have a flat end, preferably extending approximately perpendicular to the lower surface. In this configuration, the inclined surfaces and the lower surface are separated by the flat end.

[0018] Furthermore, the inclined surface, viewed in the circumferential direction, can essentially extend over the entire protrusion area.

[0019] The overall shape of the cap projection described above can essentially result in a hook- or roof-shaped design, with an exposed contact edge defined by the sloping surface in the area of ​​the free end, with which the closure cap can be supported at the mouth in the swivel-open position.

[0020] When the cap is open, in addition to being supported by the cap projection at the opening below the threaded threads, the cap may also be supported by the cap wall on the first circumferential radial projection of the opening. Thus, in the pivot-open position, the cap can be supported at two points, either directly by the cap wall or indirectly by the edge of the projection, preferably solely at the container opening.

[0021] The support of the closure cap in the swivel-open position via the cap projection at the container opening is, according to the design of the cap projection, located in an area between the threaded turns. and the first radial projection, as well as directly at the first radial projection. The retaining ring, and in particular its connection area, is preferably not subjected to, and especially not directly subjected to, the cap projection in this open position. The retaining ring, and in particular its connection area, only indirectly contributes to holding the closure cap in the pivot-open position, for example, by securing it to the first radial projection.

[0022] In a further embodiment, the connection area of ​​the retaining ring can have a recess directed towards the central axis (as seen from the cap top), which is preferably adapted to the circumference of the cap projection. The recess can be achieved by a vertical taper in the connection area of ​​the retaining ring. In the context of the design of the closure cap and its components, the vertical direction refers to the orientation of the cap wall in a vertical cross-section through the closure cap, in which the central axis is represented as a line. This direction can also be referred to as the direction of the central axis.

[0023] The circumference of the cap projection, in the area where it merges into the cap edge, can correspond to approximately one-sixth to one-twelfth, or, for example, approximately one-eighth, of the total circumference of the cap wall in the area of ​​the cap edge. The circumference length here is measured relative to a circular arc. Accordingly, the circumference of the cap projection can extend over approximately 30 to 60 degrees, or, for example, over approximately 45 degrees.

[0024] Furthermore, the recess may have a slight oversize in the circumferential direction to ensure functionality. Thus, the recess may have a circumferential width that corresponds to approximately 1.02 to 1.1 times the circumferential width of the cap projection.

[0025] The depth of the depression, viewed in the direction of the central axis, can correspond to approximately 0.3 to 0.7 times, and further, for example, approximately 0.5 times, the height of the connection area viewed in the direction of the central axis.

[0026] With the overall height of the retaining ring remaining constant, the cap projection can be formed with a greater length in the direction of the central axis due to the formation of such a depression in the connection area.

[0027] Each retaining strap can – with reference to the central axis and looking at a plane in which the central axis is represented as a point – have a circumferential extent over an angle of approximately 35 to 55 degrees, or further, for example, approximately 45 degrees.

[0028] In the recessed area, the vertical height of the connection area, which has a lower overall height compared to the retaining ring, can be further reduced, for example, to a dimension that corresponds to approximately 0.4 to 0.6 times, or further, for example, 0.5 times, the height of the connection area in a region unaffected by the recess. This height can also be referred to as the vertical partial height. Thus, for example, the vertical height of the connection area in the recessed area could be approximately 1.5 to 3 millimeters, further, for example, approximately 2 to 2.5 millimeters, and further, for example, approximately 2.2 millimeters. millimeters. Since the connection area in the open or pivot-open position of the closure cap is preferably not directly loaded by the closure cap, in particular its cap projection, a connection area with such a relatively low vertical height also proves to be sufficiently stable, so that the secure retention of the closure cap is maintained at the container opening.

[0029] The vertical height of the retaining ring outside the retaining bands can be equal to the vertical height within the retaining bands when the cap is unopened, but divided into a first height of the connecting area and a second height of the respective retaining band. Additionally, there may be a vertical gap between the connecting area and the retaining band, which could, for example, be a through-opening. A cross-section in a vertical plane through the retaining ring in the area of ​​a retaining band can reveal a vertical distance between the retaining band and the connecting area of ​​the retaining ring. This vertical gap, when viewed circumferentially in the unopened state, can be bridged by one or more tear-off tabs connecting the retaining band to the connecting area.

[0030] This can result in essentially circumferentially extending, slot-like separation zones, optionally interrupted by tear-off ridges, between the retaining bands and the connection area, and preferably also between the cap edge and the retaining ring and / or the retaining bands. These zones are taken into account and thus isolated during the preferred plastic injection molding process of the cap. Alternatively, after the plastic injection molding of the cap, the retaining bands and the retaining ring can be isolated by subsequently cutting away the separation zones. This allows, for example, to ensure that the aforementioned vertical distance is not present or practically not present.

[0031] A small vertical gap is preferred to prevent the ingress of foreign matter from the outside (when closed).

[0032] Preferably, the first height of the connection area remains constant until the respective start of the recess. This first height is consistently maintained throughout a section of the connection area between the recess and the transition of the connection area into the retaining ring, which preferably runs continuously in one piece along the vertical height.

[0033] The radial width (thickness) of a retaining strap can be smaller than its vertical height, referred to here as the second height, outside of the strap's attachment areas. Thus, the first height might correspond, for example, to approximately one-quarter to one-half of the second height, or, for example, to approximately one-third.

[0034] The initial vertical height of the connection area outside the recess can, for example, correspond to approximately 60 percent or more of the total vertical height of the retaining ring outside the connection area. A further height can correspond to, for example, approximately 60 to 90 percent, and a further height to approximately 65 to 70 percent of the height of the retaining ring outside the connection area.

[0035] Viewed radially towards the open cap, the retaining straps can be seen along their length between the ers- The retaining bands should preferably extend completely, or at least substantially completely, above the first radial projection in the tenth and third, or between the second and fourth, attachment areas. This can result in an elongated, essentially curvature-free course of the retaining bands when viewed in their longitudinal direction. If necessary, the retaining bands may twist in their longitudinal direction as the closure cap pivots into the open position.

[0036] The cap is appropriately made from a plastic material, for example polyethylene (PE), high-density polyethylene (HDPE) or polypropylene (PP).

[0037] During the pivoting movement of the closure cap towards the open position, it can pass through a pivoting dead center position and, due to a sudden impact, fall into the pivoting open position, which is limited by its contact with the container opening. During this pivoting dead center position, the retaining straps may temporarily lengthen elastically due to a stretch reserve resulting from the material's elasticity. This, supported by the retaining straps, which may act like a tension spring in this position, results in a stable, wobble-free open position of the closure cap. Brief description of the drawings

[0038] The invention is explained below with reference to the accompanying drawing, which, however, only shows exemplary embodiments. The drawing shows: Fig. 1 shows a cap in perspective view; Fig. 2 shows the closure cap in a side view according to arrow II in Figure 1, looking at a cap projection formed in the circumferential direction between retaining bands; Fig. 3 shows the section through the closure cap along line III - III in Figure 2; Fig. 4 shows the section through the closure cap along line IV-IV in Figure 2; Fig. 5 shows the magnification of area V in Figure 2; Fig. 6 shows the closure cap in a side view according to Figure 2, when the closure cap is arranged on the opening of a container; Fig. 7 shows another side view towards the end cap as indicated by arrow VII in Figure 6; Fig. 8 shows the magnification of area VIII in Figure 7; Fig. 9 shows the section along line IX - IX in Figure 6; Fig. 10 shows a representation essentially corresponding to Figure 7, but after a partial rotation of the closure cap towards an open position; Fig. 11 shows the section along line XI - XI in Figure 10; Fig. 12 is a subsequent representation to Figure 10, after a further rotation of the closure cap in the direction of the opening position; Fig. 13 shows the section along line XIII-XIII in Figure 12; Fig. 14 shows a representation according to Figure 12, but relating to an intermediate position in the course of a pivoting displacement of the closure cover in the direction of a pivoting open position; Fig. 15 shows the section along line XV - XV in Figure 14; Fig. 16 is a subsequent illustration to Figure 14, relating to the pivoting open position of the closure cap; Fig. 17 shows the section along line XVII - XVII in Figure 16; Fig. 18 shows a representation of a further embodiment corresponding to Figure 1; Fig. 19 shows a representation of the further embodiment corresponding to Figure 2; Fig. 20 shows a representation of the further embodiment corresponding to Figure 3; Fig. 21 shows a representation of the further embodiment corresponding to Figure 4; Fig. 22 shows a representation of the further embodiment corresponding to Figure 5; Fig. 23 shows a representation of the further embodiment corresponding to Figure 6; Fig. 24 shows a representation of the further embodiment corresponding to Figure 7; Fig. 25 shows a representation of the further embodiment corresponding to Figure 8; Fig. 26 shows a representation of the further embodiment corresponding to Figure 9; and Fig. 27 shows a representation of the further embodiment corresponding to Figure 17. Description of the embodiments

[0039] The following is shown and described, initially with reference to Figure 1, a Cap 1 for a container 3 provided with an opening 2 (see, for example, Figure 9).

[0040] Container 3 could, for example, be a bottle-shaped container, or, for example, a so-called PET bottle.

[0041] The closure cap 1 is preferably a closure cap 1 manufactured using the plastic injection molding process.

[0042] The mouth 2 extends around a central axis x which runs vertically when the container 3 is placed on a flat surface and has a mouth opening 4 which runs transversely to this central axis x.

[0043] In the illustrated embodiment, in which the closure cap 1 is designed as a screw cap, at least one thread G with, for example, two thread turns 6 extends around the outside of the mouth-side wall 5. The wall 5 essentially forms the thread base.

[0044] Below and maintaining a distance a in the direction of the central axis x, a first circumferential radial projection 7 is provided, below which, at a further distance b from the first radial projection 7, a second circumferential radial projection 8 can be formed. The two radial projections 7 and 8 are concentric and circumferentially perpendicular to the central axis x.

[0045] According to the illustrated embodiment (see, for example, Figure 9), the first radial projection 7 can have a diameter d that is larger than the outer diameter c of the threaded turns 6. The diameter d can, for example, be approximately 1.05 to 1.5 times, or further, for example, approximately 1.1 times, the diameter c. Thus, assuming a diameter c of, for example, approximately 25 to 27 millimeters, or further, for example, approximately 26 millimeters, the diameter d can be, for example, approximately 27 to 29 millimeters, or further, for example, approximately 28 millimeters.

[0046] According to the illustrated embodiment, the second radial projection 8 can again have a diameter e that is larger than both the outer diameter c of the threaded turns 6 and the diameter d of the first radial projection 8. The diameter e can also be, for example, approximately 1.05 to 1.5 times, or further, for example, approximately 1.1, 1.3, or 1.4 times the diameter d. Thus, assuming a diameter c of, for example, approximately 25 millimeters or more, up to, for example, 33 millimeters, or further, for example, approximately 26 millimeters, and / or assuming a diameter d of, for example, approximately 27 to 29 millimeters, or further, for example, approximately 28 millimeters, the diameter e can be, for example, approximately 29 to 31 millimeters, or further, for example, approximately 30 millimeters.

[0047] The diameters d, e are referred to a respective largest radial extent of the first and second radial projection 7, 8.

[0048] In a further embodiment, the first radial projection 7 facing the threaded threads 6 can have an inclined surface 9. With reference to a vertical section, for example according to Figure 13, in which the central axis x is represented as a line, the inclined surface 9 can extend upwards from a radially outer end of the first radial projection 7 and enclose an acute angle α of, for example, approximately 45 degrees to a transverse plane E of the central axis x.

[0049] The underside 10 of the first radial projection 7, facing away from the inclined surface 9, can extend at least approximately aligned with the transverse plane E.

[0050] The closure cap 1 has a central axis y which, in the position closing the opening 2 according to Figure 6, coincides with the central axis x of the container 3 or the opening 2.

[0051] A cap wall 11 runs concentrically to the central axis y. A cap cover 12 is preferably formed integrally with the cap wall 11 and is essentially perpendicular to the cap wall 11, spanning the muzzle opening 4 in the closed position according to Figures 6 to 9.

[0052] The cap wall 11 has a lower, circumferential cap rim 13 facing away from the cap roof 12. A retaining ring 14 is attached to this cap rim 13 by means of two retaining bands 15 and 16.

[0053] The first retaining band 15 preferably merges in one piece and of uniform material into the cap edge 13 in a first connection area 17 and into the retaining ring 14 in a third connection area 19 which is offset in the circumferential direction to the connection area 17.

[0054] The second retaining band 16 preferably merges in one piece and of uniform material into the cap edge 13 in a second connection area 18 and into the retaining ring 14 in a fourth connection area 20 which is offset in the circumferential direction to the connection area 18 in the opposite direction to the dislocation direction of the connection area 19 relative to the connection area 17.

[0055] A connection area 17, 18 preferably extends essentially as a right-angled bend – with respect to the closed state – upwards with respect to the retaining band 15, 16. The interior of the angle is preferably A distinctly rounded transition is formed. The outer edge of the angle can also be rounded. The retaining straps 15, 16 preferably extend perpendicularly (horizontally) to the central axis y outside the connection areas. A transition of a connection area 17, 18 into the cap wall 11 is preferably along an (imaginary) straight line that runs approximately perpendicular to the central axis y. For example, see Figures 1 and 2.

[0056] The connection areas 19, 20 preferably form a straight continuation of the retaining band 15, 16. The transition of the connection areas 19, 20 into the retaining ring 14 preferably occurs along an (imaginary) straight line extending approximately parallel to the central axis y.

[0057] The retaining bands 15 and 16 form a permanent connection between the retaining ring 14 and the closure cap 1 both in the closed position according to Figures 6 to 9 and 23 to 26 respectively, and in the open state of the closure cap 1 (for example according to Figures 16 and 17 or 27 respectively), wherein the retaining ring 14 is furthermore formed as a closed circumferential ring and forms a connection area 21 between the third connection area 19 and the fourth connection area 20 of the retaining bands 15 and 16.

[0058] The closure cap 1 is expediently made of a plastic material, for example polyethylene (PE), high-density polyethylene (HDPE) or polypropylene (PP). Preferably, it may be manufactured using a plastic injection molding process.

[0059] Essentially circumferentially extending, slit-like separation zones 23, preferably interrupted by tear-off ribs 22, between the The retaining bands 15 and 16 and the connection area 21, and preferably also the area between the cap rim 13 and the retaining ring 14 and / or the retaining bands 15 and 16, can already be taken into account and thus eliminated during the preferred plastic injection molding process of the closure cap 1. As noted above, however, they can also be formed after the injection molding process by milling or cutting.

[0060] As can be seen from the illustrations, tear-off bridges 22 can be provided between the cap edge 13 and the retaining ring 14 outside the connection area 21 and between the retaining bands 15 and 16 near the first and second connection areas 17 and 18.

[0061] On the inside of the cap wall 11, a mating thread 24 for the container-side thread with its thread turns 6 is preferably formed integrally with the cap wall 11.

[0062] The cap cover 12 can bear on its inner wall a sealing collar 25 concentric to the central axis y, with an outer bead formation 26, for at least an approximately sealing interaction with the inner surface 27 of the orifice 2 in the area of ​​the orifice opening 4 in the closed position.

[0063] The retaining ring 14 – and via it the entire closure cap 1 – can be secured, at least in the closed position, below the first radial projection 7, preferably between the first and the second radial projections 7 and 8. Securing at one or between the two radial projections 7 and 8 can be achieved by means of an inner wall- The retaining ring 14 has radially inward projecting projections 28, which form a preferably barbed, pull-resistant underhand grip, in particular of the first radial projection 7 (see Figures 1 and 9).

[0064] The cap wall 11 can extend between the first and second connection areas 17 and 18 in the direction of the central axis y, away from the cap roof 12, into a cap projection 29, wherein the cap projection 29 has a vertical overhang f relative to the cap edge 12 in the normal operating condition, which preferably exceeds the height u' of a retaining band 15, 16 as viewed in the direction of the central axis y. The cap projection 29 has a projection area 30 that extends radially outwards beyond the cap wall 11. The height u' is considered here to be the height that exists for a retaining band 15, 16 in an unaffected area extending substantially circumferentially to the central axis y outside a connection area 17, 18, 19, 20.

[0065] The cap projection 29 extends from a region between the first and second attachment areas 17 and 18 of the retaining bands 15 and 16 to the cap edge 13 and towards the retaining ring 14, in particular towards the connection area 21 of the retaining ring 14. The projection length f of the cap projection 29 relative to the cap edge 13, viewed along the central axis y, can be approximately twice the height u' of a retaining band 15 or 16, also viewed along the central axis y. Furthermore, the projection length f can also be approximately 0.5 times the height h of the retaining ring 14, likewise viewed along the central axis y, in a region free of retaining bands 15 and 16 between the second and first attachment areas 18 and 17.

[0066] The projection area 30 of the cap projection 29 can also extend radially outwards beyond the projection dimension f by a projection dimension m beyond the cap wall 11, which projection dimension m can correspond approximately to 0.01 to 0.06 times, or further, for example, approximately to 0.011 to 0.014 times or 0.035 to 0.45 times the outer diameter k of the cap wall 11 outside the cap projection 29.

[0067] The connecting area 21 of the retaining ring 14 can – viewed from the cap ceiling 12 – in a further embodiment, viewed in the direction of the central axis y, run away from the cap ceiling 12 below the cap projection 29 as well as below the retaining bands 15 and 16.

[0068] The connection area 21 of the retaining ring 14 can, in a further embodiment, have a recess 31 directed in the direction of the central axis y, which is preferably adapted in a circumferential direction to a circumferential width p of the cap projection 29. The recess 31 can be formed by a vertical tapering 32 of the retaining ring 14 in the connection area 21.

[0069] The vertical height h of the retaining ring 14 outside the retaining bands 15, 16 can be equal to the vertical height h' in the area of ​​the retaining bands 15 and 16 when the closure cap 1 is unopened, but divided into a first height u of the connecting area 21 and a second height u' of the respective retaining band 15, 16 (see Figure 8). In addition, there can be a vertical gap u'" (see, for example, Figures 8 and 25), preferably formed as a (horizontal) through-opening, between the respective retaining band 15, 16 and the connecting area 21. This design preferably relates to the vertical division in the area of ​​the division of the Retaining ring 14 into a retaining band 15, 16 and the circumferentially continuous area of ​​the retaining ring 14, but outside the recess 31. With reference to a section in a vertical plane through the retaining ring 14 in the area of ​​a retaining band 15, 16, the aforementioned vertical distance u'" of the retaining band 15, 16 to the connection area 21 of the retaining ring 14 can result, which, in the unopened state, viewed in the circumferential direction, can be bridged by one or more breakaway webs 22.

[0070] The first height u of the connection area 21 remains unchanged up to the depression 31 in the circumferential direction.

[0071] The radial width n (see, for example, Figure 4) of a retaining band 15, 16, considered with reference to the central axis y, can be chosen to be smaller than the previously described second height u' of the retaining band 15, 16. For example, a width n can be chosen that corresponds approximately to 0.4 to 0.6 times, or further, for example, approximately to 0.5 times, the height u'.

[0072] A retaining strap 15, 16 can have a circumferential extent over an angle θ of approximately 30 to 60 degrees, or further, for example, approximately 45 degrees (compare Figure 4).

[0073] The retaining bands 15 and 16 can extend towards the cap edge 13 above the first radial projection 7 in the closed position or in the unopened state of the closure cap 1, while the connecting area 21 preferably runs below the first radial projection 7.

[0074] The circumferential width p (compare, for example, Figure 5) of the cap projection 29, considered with reference to a projection in the radial direction. The area where the cap projection 29 merges into the cap edge 13 can correspond to approximately one-eighth of the total circumferential length of the cap wall 11 in the region of the cap edge 13. Accordingly, the circumferential extent of the cap projection 29 can be at an angle β of approximately 45 degrees.

[0075] Furthermore, the recess 31 may have a slight oversize in the circumferential direction r to ensure functionality. Thus, the recess 31 may have a circumferential width s that corresponds approximately to 1.02 to 1.1 times the circumferential width p of the cap projection 29.

[0076] The depth t of the depression 31, considered in the direction of the central axis y, can correspond approximately to 0.5 times the partial height u of the connection area 21, considered in the direction of the central axis y.

[0077] The vertical partial height or first height u of the connection area 21 outside the recess 31 can correspond to approximately 60 percent of the total vertical height h of the retaining ring 14 outside the retaining bands 15 and 16.

[0078] In the area of ​​the recess 31, a third, further reduced vertical height u" of the connecting area 21, which has a lower height u compared to the retaining ring 14 outside the retaining bands 15, 16, can be provided, for example, to a dimension that may correspond approximately to 0.5 times the first height u of the connecting area 21 in an area unaffected by the recess 31. Thus, for example, the third vertical height u" of the connecting area 21 in the area of ​​the recess 31 may be approximately 2.2 millimeters.

[0079] Furthermore, the projection area 30 in a cross-section, in particular a vertical cross-section, for example according to Figure 11, can have an inclined surface 34 extending from a free end 33 of the cap projection 29 towards the central axis y, which terminates approximately in the area of ​​the cap wall. This inclined surface 34 can extend from the cap wall 11 and slope down towards the free end 33 of the projection area 30, and can enclose an obtuse angle y of, for example, approximately 135 degrees in the resulting cross-sectional plane.

[0080] The axial projection length f of the cap projection 29 can be selected, starting from the cap edge 13, such that in the closure position shown by way of example in Figure 6, a projection edge 35 facing away from the cap cover 12 extends in axial direction beyond the lower edge 37 of the retaining bands 15 and 16 facing away from the cap edge 13 and may, if necessary, touch or penetrate a transverse plane F defined by an upper edge 36 of the connection area 21 facing the cap edge 13 and engage in the area of ​​the recess 31 (see also Figure 5).

[0081] The described shape of the cap projection 29 can essentially result in a hook- or roof-shaped design, with an exposed contact edge 38 defined by the inclined surface 34 in the area of ​​the free end 33, with which the closure cap 1 can be supported at the opening 2 in a pivot-open position as shown in Figures 16 and 17. Preferably, as can be seen particularly in Figure 17, the closure cap 1, in the open state, can be supported on its upper side by means of the cap wall 11, in particular by means of the cap projection 29 formed on the cap wall 11 and preferably also by means of the further projection area 30 formed thereon, against the first radial projection 7. and preferably also support it at the same time on an outer surface of the wall 5 of the opening 2 that is adjoining it upwards, usually cylindrical.

[0082] To fit the container 3 with the closure cap 1, the closure cap 1 is screwed or bounced onto the opening 2 of the container 3 with the retaining straps 15 and 16 connected via the tear-off tabs 22 and the retaining ring 14, whereby the projections 28 of the retaining ring 14 bounce over the first radial projection 7 to obtain an underhand grip position.

[0083] To move the closure cap 1 into an open position, and in particular into a pivoting open position, the closure cap 1 is unscrewed via the threaded engagement (see arrow w in Figures 10 and 12). Due to the barbed rear engagement of the projections 28 on the first radial projection 7, a successive distance between the cap edge 13 and the retaining ring 14 is achieved during the screw displacement. When the closure cap 1 is opened for the first time, this leads to the separation of the tear-off tabs 22.

[0084] With the thread engagement released, the closure cap 1 can be pivoted to the side into a swivel-open position (see arrow v in Figures 15 and 17).

[0085] The cap projection 29 can, in particular, project so far and / or be designed with such a projection length f considered in the direction of the central axis y that in this pivot-open position, the cap wall 11 is supported by the cap projection 29 below the threaded turns 6 and above the first radial projection 7 at the opening 2.

[0086] In addition to the support of the closure cap 1 via the cap projection 29 at the opening 2 below the threaded threads 6, the closure cap 1 can also be supported directly via the cap wall 11 on the first circumferential radial projection 7 of the opening 2. Thus, in the pivot-open position, the closure cap 1 can be supported at two points: directly via the cap wall 11 and via the cap projection 29, preferably solely at the container opening 2. Preferably, in the pivot-open position, the cap wall 11 does not rest against the second radial projection 8, the retaining ring 14, or the connecting area 21.

[0087] The cap 1 is held securely in a user-friendly, pivoting open position, thus enabling unimpeded pouring of the container contents. Due to the given projection length f and the radially extending projection area 30 of the cap projection 29 beyond the cap rim 13, a distance between the cap 1 and the opening 2, essentially radial to the opening 2, is achieved in the pivoting open position, supported by the container opening 2.

[0088] The retaining ring 14, and in particular its connecting area 21, is preferably not subjected to, and especially not directly subjected to, pressure by the cap projection 29 in this pivot-open position. The retaining ring 14, and in particular its connecting area 21, preferably only indirectly serves to hold the closure cap 1 in the pivot-open position, for example by securing it to the first radial projection 7.

[0089] Viewed in a radial direction, the retaining straps 15 and 16, when the closure cap 1 is open, can extend along their length 1 (see Figures 8 and 25) between the first and third, and between the second and fourth, attachment areas 17, 18, 19, and 20, respectively, essentially entirely above the first radial projection 7 (see Figures 9 and 17, and 26 and 27, respectively). This can result in an elongated, essentially straight course of the retaining straps 15 and 16. During the pivoting movement of the closure cap 1 into the pivot-open position, the retaining straps 15 and 16 can twist in their longitudinal direction, for example, by approximately 80 to 130 degrees, or further, for example, by approximately 90 to 110 degrees.The twisting area 39 can essentially occur in the half of the retaining band facing the first or second connection area 17, 18 – with respect to length 1. The higher elasticity of the connection area 21 compared to the retaining ring 14, due to its lower first height u and possibly even lower third height u" (if any), can promote the desired displacement of the retaining bands 15, 16.

[0090] During the pivoting movement of the closure cap 1 towards the open position, the closure cap 1 can pass through a pivoting dead center position (see Figures 14 and 15) and, due to a sudden movement, fall into the pivoting open position, which is limited by contact with the container opening 2. During the passage through the pivoting dead center position, the retaining straps 15 and 16 can temporarily lengthen elastically due to a stretch reserve provided by the material's elasticity. With the support of the retaining straps 15 and 16, which may act like a tension spring in this position, a stable, wobble-free pivoting open position of the closure cap 1 is achieved.

[0091] It is further preferred that the edge 36, viewed in the direction of the cap cover 12, extends in a circumferential extension through the cap projection 29. The projection edge 35 extends accordingly in a further circumferential extension below the edge 36. A certain degree of interlocking of the cap projection 29 with the retaining ring 14 is also preferred, preferably achieved by the recess 31.

[0092] With reference to Figures 18 to 27, another embodiment of the closure cap 1 is shown.

[0093] Unless otherwise described below, the explanations relating to the initially described embodiment also apply. This also includes explanations that are relevant to the first embodiment.

[0094] In particular, a change preferably occurs practically only with regard to the cap projection 29 and the inclined surface 34.

[0095] As can be seen particularly from Figures 24 and 25, the inclined surface 34 in this second embodiment has a comparatively small extent in the vertical direction, i.e., in the direction of the central axis y. While in the first embodiment, with the exception of an area at the contact edge 38 and an end with a slight distance to the cap wall 11, its vertical extent corresponds approximately to the length f of the cap projection 29, its vertical extent (insofar as there is a different vertical extent over the circumference) corresponds in the largest area, preferably approximately at the center of the circumference. cap projection 29) one twentieth to one fifth of the board length f of the cap projection 29 of this second embodiment, preferably about one tenth of the board length f.

[0096] As explained above, an upper edge line of the inclined surface 34 facing the cap cover 12 is preferably curved in a front view of the cap projection 29, in which the central axis y is depicted as a line, and more preferably such that the greatest vertical extent of the inclined surface 34 is approximately at the circumferential center and – also preferably – there is little or no vertical extent at the circumferential edges of the cap projection 29. This characterization also applies to the first embodiment.

[0097] As shown with regard to the first embodiment, but also given as a possible design with regard to the second embodiment, the inclined surface 34 is preferably formed over a partial circumferential area, which is again preferably assigned to the center of the circumferential extent of the cap projection 29, with an edge edge assigned to the cap cover 12, which runs essentially straight.

[0098] The inclined surface 34 of the second embodiment preferably provides a transition between a projection area 40, which, with the exception of the inclined surface, is approximately cuboid in possible configurations and projects radially outwards, with respect to the central axis y, beyond an outer surface, optionally a covering surface, of the cap wall 11, and a wall section of the cap projection 29 adjoining it upwards towards the cap roof, which is essentially flush with the cap wall 11. The projection area 40 extends in the circumferential direction of the cap projection 29. preferably only over a partial area of ​​the circumference, more preferably over about nine tenths to seven tenths of the circumference, more preferably over about eight tenths of the circumference.

[0099] The projecting region 40 transitions at its circumferentially extending ends into the surface of the cap projection, which otherwise preferably extends with a curvature corresponding to the cap wall, with a curvature greater than the curvature of the cap wall or, optionally, a surface of the cap wall. The curvature of the projecting region 40 can be uniform over its circumference. The curvature can follow a circular path in cross-section. In particular, the curvature can be defined as a segment of a cylindrical surface.

[0100] With regard in particular to the preferably given different vertical extent of the inclined surface, the projection area 40 is not (circular) cuboid-shaped over the circumference, but, with reference to a view in a section plane through the projection area 40 perpendicular to the central axis y, crescent-shaped with regard to an imaginary continuously curved surface of the cap projection 29.

[0101] This design also enables, in the second embodiment (see Figure 27), a certain degree of nesting with the first radial projection 7 in the open state of the closure cap (see also Figure 17 regarding the first embodiment), preferably by a certain adaptation to the inclined surface 9 of the radial projection 7, thus providing stability. In contrast to the first embodiment, in this embodiment, the closure cap 1 is preferably supported by means of the cap wall 11, in particular by means of the feature formed on the cap wall 11. The cap projection 29 and, more preferably, the projection area 30 further developed thereon, are only provided on one upper surface of the first radial projection 7. Preferably, in this embodiment, no support is provided in this open state on the cylindrical outer surface of the wall 5 of the opening 2 above the first radial projection 7. List of reference symbols 1 cap 29 cap projection 2 Mouth 30 Promontory area 3 Container 31 Recess 4 Mouth opening 32 Tapering 5 wall 33 free end 6 thread turns 34 inclined surface 7 first radial lead 35 lead edge 8 second radial lead 36 edge 9 inclined surface 37 edge 10 Underside 38 Mounting edge 11 Cap wall 39 Twisting area 12 Cap ceiling 40 Projection area 13 Cap edge 14 Mounting ring 15 retaining strap 16 Retaining strap 17 first connection area a distance 18 second connection area b distance 19 third connection area c diameter 20 fourth connection area d diameter 21 Connection area e Diameter 22 demolition bridge for board length 23 Separation zone h height 24 counter thread h' height 25 sealing collars k diameter 26 sealing bead 1 length 27 internal surface area m overhang dimension 28 lead n width p Circumference width a Angle r Circumference direction ß Angle s Circumference width Y Angle t Depth ö Angle u First height u' Second height u" Third height u'" Vertical distance v Arrow w Arrow x Central axis y Central axis E transverse plane F Transverse plane G thread pitch

Claims

Claims 1. A closure cap (1) with a central axis (y), a circumferential cap wall (11), and a cap cover (12) formed substantially perpendicular to the cap wall (11), for a container (3) provided with an opening (2), wherein the cap wall (11) has a lower cap rim (13) facing away from the cap cover (12), and a retaining ring (14) is attached to the cap rim (13) by means of two retaining bands (15, 16), wherein the retaining bands (15, 16) transition into the cap rim (13) in a first and a second attachment area (17, 18) and into the retaining ring (14) in a third and a fourth attachment area (19, 20), which retaining bands (15, 16) also maintain a permanent connection between the retaining ring (14) and the closure cap when the closure cap (1) is open. (1) form, wherein the retaining ring (14) is further formed as a closed circumferential ring,with a connecting area (21) between the third and the fourth connection area (19, 20) of the retaining bands (15, 16), characterized in that the cap wall (11) between the first and the second connection area (17, 18) continues in the direction of the central axis (y), facing away from the cap roof (12), into a cap projection (29), wherein the cap projection (29) has a projection length (f) relative to the cap edge (13), which is the measure of a second vertical height (u) considered in the direction of the central axis (y). z ) of a retaining band (15, 16) exceeds, and that the cap projection (29) has a radially outward projecting projection area (30), wherein the connecting area (21) of the retaining ring (14) runs below the cap projection (29).

2. Closure cap according to claim 1, characterized in that the projection area (30) viewed in a cross-section has a direction towards the cap roof (12) has a sloping surface (34) inclined towards the central axis (y).

3. Closure cap according to claim 2, characterized in that the inclined surface (34) extends from the free end (33) of the cap projection (25).

4. Closure cap according to claim 2, characterized in that the inclined surface (34) begins offset from the free end (33) of the cap projection (29) towards the cap lid (12).

5. Closure cap according to one of claims 2 to 4, characterized in that the inclined surface (34) ends approximately in the area of ​​the cap wall (11).

6. Closure cap according to one of claims 2 to 4, characterized in that the inclined surface (34) ends at a distance from the cap wall (11).

7. Closure cap according to one of the preceding claims, characterized in that a retaining band (15, 16) has a circumferential extent over an angle (θ) of 35 to 55 degrees.

8. Closure cap according to one of the preceding claims, characterized in that the connection area (21) has a first vertical height (u).

9. Closure cap according to claim 8, characterized in that a vertical height (h) of the retaining ring (14) given outside the retaining bands (15, 16) is equal to the first vertical height (h z ) in the area of Retaining bands (15, 16), in the unopened state of the closure cap (1), but divided into the first vertical height (u) of the connection area (21) and the second vertical height (u z ) of the respective retaining strap (15, 16) and, if applicable, a vertical distance dimension (u" z ) outside the connection areas (17, 18, 19, 20) between the connecting area (21) and the respective retaining band (15, 16).

10. Closure cap according to one of claims 8 or 9, characterized in that the first height (u) is continuous and unchanged until the beginning of a depression (31).

11. Closure cap according to one of the preceding claims, characterized in that a radial width (n) of a retaining band (15, 16) is smaller than the vertical second height (u) zz ).

12. Closure cap according to one of claims 9 to 11, characterized in that the first vertical height (u) of the connection area (21) outside the recess (31) corresponds to 60 percent or more of the total vertical height (h) of the retaining ring (14) outside the retaining bands (15, 16) and optionally of the connection area (21).

13. A closure cap (1) applied to an opening (2) of a container (3), preferably a closure cap (1) according to one of claims 1 to 12, wherein the opening (2) has one or more threads (G) with one or more thread turns (6), wherein, facing away from an opening (4) of the opening, a first radial projection (7) extending perpendicular to a central axis (x) of the opening (2) is formed below the one or more thread turns (6), and wherein a retaining ring (14) of the closure cap (1) is formed below the first radial projection. dial projection (7) is secured and the closure cap (1) has a cap projection (29), characterized in that the cap projection (29) projects so far and is formed with such a projection length (f) considered in the direction of a central axis (y) of the closure cap (1) that in the open state a support of a cap wall (11) is provided via the cap projection (29) below the one or more threads (6) and at or above the first radial projection (7).

14. A closure cap (1) applied to an opening (2) of a container (3) according to claim 13, characterized in that a second radial projection (8) is formed below the first radial projection (7), extending radially outwards beyond one or more threaded turns (6) and the first radial projection (7), and circumferentially perpendicular to the central axis (x).

15. A closure cap (1) applied to an opening (2) of a container (3) according to claim 14, characterized in that the retaining ring (14) is secured between the first and the second radial projection (7, 8).

16. A closure cap (1) applied to an opening (2) of a container (3) according to one of claims 13 to 15, characterized in that retaining straps (15, 16) of the closure cap (1) extend over its length (1) above the first radial projection (7) when the closure cap (1) is open.

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