WO2016058576A1

WO2016058576A1 - Closure cap

Info

Publication number: WO2016058576A1
Application number: PCT/DE2015/000495
Authority: WO
Inventors: Michael Sean BURGES; Peter Gonnert
Original assignee: Rosti Gp Germany Gmbh
Priority date: 2014-10-16
Filing date: 2015-10-09
Publication date: 2016-04-21
Also published as: DE102014015202B3; DE102014015202B9

Abstract

The invention relates to a closure cap for a container (1), comprising a closure element (2) that can be attached to the container (1) and has a sleeve (3), the lower opening (5) of which is sealed by an impermeable diaphragm (6), an actuation cap (7) comprising a cover wall (8) and a thrust tube (10) engaging on an underside (9) of the cover wall (8) and extending downwards, and a chamber (11) formed by the thrust tube (10), the cover wall (8), a section of the sleeve (3) and the diaphragm (6), wherein the closure element (2) and the actuation cap (7) can move in relation to one another in a screw-like manner by means of a thread (12). The object of the invention is to provide a closure cap whereby the risk of an unintentional opening of the chamber (11) is minimised, even if a large load is applied. According to the invention, the object of the invention is achieved using a closure cap wherein the first thread element (20) is formed by at least one guide cam (23) and the second thread element (21) is formed by a spiral contour (29) arranged on the end side on the sleeve (3), on which the guide cam (23) is supported.

Description

cap

description

The invention relates to a cap for a container with the standing in the preamble of claim 1 features.

Such caps are used to store and transport a first liquid or dry substance in a dedicated chamber separate from the second substance in the container. For this purpose, the cap is attached to the container. Only at the time of use, the filled with the first substance chamber is opened by an operation of the user and the first substance falls or flows into the container below, mixes there with the second substance filled therein and can then be consumed. This results in the advantage of a mixture of the first and second substances produced only at the time of consumption, whereby, for example, a longer shelf life for drinks can be achieved. The ingredients stored in the chamber can be stored dry and hermetically separated from the environment. Chemical preservatives or stabilizers can therefore be dispensed with. It is also possible to store in the chamber a first substance which reacts chemically with a second substance in the container and achieves the desired result after the reaction.

A known from the prior art cap is described in DE 20 2012 007 857 U1, in which case the actuating cap relative to the closure element by means of a link is movable. The gate includes a cam projecting on the closure element and an L-shaped recess in the actuating cap into which the cam protrudes. To open the chamber, the

Actuator be first rotated in the circumferential direction until the cam from a horizontal leg of the L-shaped recess in hiked the vertical leg. Only in this position, the actuator cap can be pressed down in the axial direction and the

Membrane are opened. However, it has been found that with a very large load the mushroom-shaped actuating cap can deform and, as a result, can slide over the closure element. Also, the opening procedure is perceived as cumbersome because the operator first a rotational movement and then a

Pushing movement of the actuating cap must perform.

Another cap is described in EP 2 481 681 A1. The chamber provided for the storage of the first substance is closed on the underside by a membrane, which after a

Rotary movement of the actuating cap is pierced, so that the first substance from the chamber can flow into the container. However, the known caps were to be transported only with great care, as in a stacking of several filled and already arranged on the containers caps the underlying

Actuation caps of the caps were pressed downwards in the axial direction solely due to the load and pierce the membrane, so that the first and second substances were already mixed during transport.

For this reason, the invention was the object of a

To provide a cap that minimizes the risk of unintentional opening of the chamber, even at high load.

The object is achieved with the characterizing features of claim 1. Under a container in particular a bottle is understood, which by means of the attached thereto

Closure cap is tightly closed. The closure element and the actuating cap are preferably each made as an integral, one-piece component. Before consuming, the user opens through a predetermined rotational movement of the actuating cap, first the chamber and thereby releases the first substance contained therein, which then mixes with the second substance contained in the container. Subsequently, the operator may consume the two mixed substances by removing the entire cap from the container. Overall, the operator performs two

Opening movements, namely a first chamber opening and

then a second container opening.

The helical contour forms an upper end of the sleeve and surrounds an upper opening of the sleeve, in which the torque tube

is inserted. The torque tube is guided by the sleeve in the axial direction. Advantageously, the sleeve and the torque tube have a circular cross-section.

During transport and also during opening, the guide cam is always supported on the helical contour and thereby initiates a force acting on the actuating cap normal force as a compressive force in the axial direction in the sleeve. As a result, particularly high forces can be absorbed without deformation. During the rotational movement for opening the chamber, the guide cam slips on the helical contour. Due to its helical profile, the spiral contour ensures an axial feed of the torque tube beyond the lower level of the diaphragm. A membrane is understood to mean, in particular, a flexurally soft and thus deformable film.

Advantageously, the guide cam on a bottom, which forms a parallel plane with the helical contour. This results in a surface-like contact of the guide cam with the helical contour and it will be punctual surface pressures avoided. This in turn ensures a smooth slipping of the guide cam on the

Spiral contour. It is essential that the guide cam on his Underside a parallel plane, which does not necessarily have to be formed as a continuous surface. It is also possible to provide a plurality of partial surfaces, but then together span a plane and thereby rest together on the helical contour.

According to a first preferred embodiment of the

Guide cam of several, formed in the axial direction parallel to each other ribs. The axially parallel ribs may be radially aligned with the torque tube. The guide cam may for example be formed from three ribs. This first

Embodiment is representative of a guide cam whose bottom is indeed aligned parallel to the helical contour, but is formed only by the lower ends of the ribs. The lower ends of the ribs stand together on the helical contour.

According to an alternative embodiment, the guide cam may also be formed by an invagination of the top wall. In this case, the top wall is wedge-shaped lowered, wherein the underside of this wall portion of the top wall is the guide cam. The invagination is therefore on the inclination of the helical contour

matched, wherein the underside of the indentation forms a continuous parallel plane with the helical contour. The indentation may optionally also continue in a collar wall surrounding the top wall. This alternative embodiment has the advantage that the recess also present on the outside can serve as a gripping surface and simplifies the opening of both the chamber and the container.

Conveniently, the first threaded element comprises a first

Thread and the second threaded element cooperating with the first thread, second thread. The pitch of the first and second thread corresponds to the pitch of the helical contour. The cooperating first and second thread begins a occurring in the axial direction

Tensile load, thereby preventing, in particular during

Transport or even during use, the actuating cap is separable from the closure element.

It has proved to be useful when the first thread and the second thread are supported with their sides facing each other against each other. For this purpose, the first and second thread overlap in the circumferential direction always at least partially. Due to the area-like contact of the mutually facing sides of the respective thread a particularly defined rotational movement and a continuous feed of the torque tube.

The guide cam can in the axial direction to the second

Be thread spaced, preferably the first

Thread and / or the helical contour between the second

Thread and the guide cam is arranged. This results in a particularly compact design in the axial direction of

Closure element.

Advantageously, the helical contour follows the course of the first and / or second thread, resulting in a largely backlash-free

Rotary movement of the actuating cap relative to the closure element can be realized.

Conveniently, the actuating cap on a engaging on the top wall and radially spaced sleeve tube collar wall. The collar wall can surround the torque tube concentrically. Due to the thereby enlarged outer diameter of the actuating cap, the operator can better grip them and apply a larger torque to open the chamber but also the container. About that In addition, an internal thread can be formed on an inner side of the collar wall, that is to say on the side facing the thrust tube.

Also may expediently attack the guide cam on the collar wall and / or the torque tube and / or the top wall.

In particular, by an additional attachment of a guide rib formed by a plurality of ribs on the inside of the collar wall results in a significantly increased strength of the individual ribs, whereby the ability to accommodate high pressure loads can be further increased.

Preferably, the first thread is opposite the collar wall in the direction of the torque tube. Advantageously, the second thread also protrudes in the radial direction with respect to the sleeve.

As a result, the material in the region of the collar wall and / or the sleeve is not weakened, since no material reduction is necessary, for example, when cutting a recessed thread turn.

It has proved to be expedient if the first thread and / or the underside of the guide cam and / or the second thread and / or the helical contour have a pitch of 5 ° to 30 °, particularly preferably of 10 ° to 20 °. This results in a sufficient axial feed of the torque tube to peel off the membrane and release the first substance from the chamber, from the wrist of the operator at a simultaneously acceptable

Effort. With a smaller pitch, the operator would have to embrace, with a larger pitch would be larger forces

applied.

The helical contour may have a support region with a pitch of 0 ° and / or a concave shape with respect to the guide cam on its end facing in the axial direction of the top wall. In This area is the guide cam during transport and can not slip on a contour in the normal force direction on the inclined portion of the helical contour. Only a rotational movement of the actuating cap applied by the user brings the guide cam out of the support area into the inclined section of the helical contour.

Conveniently, the thread is formed such that by turning the actuating cap in a predetermined direction of rotation, the torque tube with its lower end in the axial direction at least partially passes through the lower opening and opens the membrane.

Preferably, the predetermined direction of rotation of the actuator cap is directed counterclockwise. The opening of the chamber for releasing the first substance into the container thus takes place in the usual sense of direction by a left-hand rotation of the actuating cap.

Advantageously, the membrane is secured in the region of the lower opening by means of a weld on an end face of the sleeve. The

Weld seam can be produced simply by thermal welding of the preferably plastic-coated membrane.

On the other hand, the weld forms a predetermined breaking point for the lower end of the torque tube during the opening of the chamber, so that the membrane is not separated as such and pierced.

Conveniently, the torque tube at its lower end facing the diaphragm at least one in the axial direction above Ablösekeil on, contrary to the direction of rotation in

Circumferentially rising edge and a subsequent cutback can have. Preferably, the rising flank is provided at its axially projecting end with a contact portion which upon rotation of the actuating cap in the direction of rotation initially line-like contacted the membrane and then lifted off the front side of the sleeve.

Conveniently, upon further rotation of the actuating cap, a portion of the rising flank lying in the direction of rotation in front of the contact region continuously lifts the membrane. This pushes successively from above with simultaneous rotation in the circumferential direction against the

Transition region of detached and still attached membrane.

Advantageously, after a rotation of the actuating cap, the weld with a circumferential angle of 160 ° to 200 °, particularly preferably 180 °, detached from the front side. Such a detached from the sleeve membrane is sufficient to ensure that the first

Substance can escape completely from the chamber. On the other hand, the membrane is still sufficiently attached to the sleeve, so that no complete detachment of the membrane is possible. This should be avoided at all costs, as otherwise the membrane or parts of the membrane float freely in the container and during the

Consuming could be swallowed.

It has been found to be particularly useful when the thread is a two-threaded motion thread with two first and second threaded elements. Multi-start threads are due to their large pitch angle movement thread. They already allow with a partial rotation a strong axial displacement of the threaded part. If the thread is double-threaded, a new thread begins every 180 °, it is three-speed, every 120 °. Preferably, the first threaded elements and the second threaded elements are each arranged offset by 180 °. With the help of the two-start thread the actuation cap is on

attached to opposite sides of the closure element, so that forces evenly from the actuating element to the Be transferred closure element and a particularly defined and wobble-free opening is possible.

The sleeve may comprise two end-face helical contours each having a Endanschlagswandabschnitt which is disposed between an outlet of one of the second threads and an axially extending abutment edge, said abutting edge intersects an inlet of the other second thread turn and its associated helical contour. During opening, the actuation cap, and thus the guide cam located beneath its cover wall, rotates until it reaches the abutting edge in the circumferential direction. In this position, the opening position of the chamber is defined. In the axial direction is located in this defined open position under the guide cam a horizontally extending portion of the helical contour, that is, a section with the slope 0 °. In this defined position, the operator feels that a further rotation of the actuating cap is not necessary and also not useful, especially since then the membrane could possibly completely detached from the sleeve.

Conveniently, at least one of the two

Endanschlagswandabschnitte characterized formed a pawl that the Endanschlagswandabschnitt interrupted at a distance corresponding to or greater than a width of the guide cam to the respective nearest edge and provided with an undercut. The pawl is to prevent that when the operator after opening the container and consuming its contents the

If the closure element is to be screwed back onto the container in a clockwise direction, in the case of a rightward rotation of the actuating cap, the closure element does not rotate back relative to the container, but only the actuation cap relative to the closure element. Advantageously, both of the first threads span one

Circumferential angle of 210 ° to 240 °, more preferably from 215 ° to 235 °, most preferably from 220 ° to 230 °. By contrast, the two second threads can span a circumferential angle of 100 ° to 140 °, more preferably of 1 15 ° to 125 °. As a result, the two first and second threads are in operative engagement with each other over the entire rotation to be performed by the operator.

Conveniently, the closure element is formed on its side facing the container with a wall apron which surrounds the sleeve coaxially and extends down towards the container to the lower level of the sleeve. On one of the sleeve side facing the

Wall skirt can be formed an internal thread, which in

Can be brought engageable with a container thread. By means of the

Internal thread and the container thread can the entire

Cap, comprising the closure element and the

Operating cap, for consuming the container located in the container

Substances are completely removed and then put back on.

Particularly advantageous is an embodiment in which the thread is a harder material and / or a greater pitch than that

Internal thread has. Since it is preferred that in a left-hand rotation both the thread between the actuating cap and the closure element and the internal thread for opening the chamber or the container leads, is achieved with the help of this embodiment that the

Thread first loosens and only then the internal thread. Otherwise, the first time you open the entire

Remove the cap from the container without opening the chamber first and mixing the first and second substances. It has proven to be advantageous if a tamper-evident ring is attached to the collar wall by means of predetermined breaking points. This ensures that the first and second substances are stored separately from each other and have not been mixed together before consumption.

Advantageously, the tamper-evident closure ring lies with it

Bottom on an upper side of the wall apron, so that it forms an abutment in the axial direction.

Preferably, the tamper-evident closure ring has a

Inner diameter and the actuating cap on an outer diameter, wherein the inner diameter is greater than the outer diameter and the actuating cap dips during the helical movement in the tamper evident seal in the axial direction. Of the

Tamper evident ring therefore does not need to be disconnected from the cap. Otherwise, a separate, separate tamper-evident ring should be kept and disposed of separately. Also, there is no risk that the

Originality closure ring gets lost and pollutes the environment.

Appropriately, are on an inner wall of the

Tamper-evident ring provided a plurality of circumferentially distributed projections which engage in a formed on the outside of the sleeve annular groove. This will be the

Tamper-evident closure ring secured against loss by stripping in the axial direction, since the projections project circumferentially distributed in this.

In the annular groove a plurality of circumferentially distributed blocking webs may be formed. These prevent a turning of the

Tamper-evident ring when the actuating cap is turned in Opening position and ensure in particular that the

Break off predetermined breaking points to the co-rotating part of the actuating cap, in particular the collar wall. This is assisted in a particularly favorable manner when in the predetermined direction of rotation in the direction of the blocking webs located flanks of the projections are aligned perpendicular to the inner wall of the tamper-evident ring. These flanks collide with a rotation of the actuating cap in the

Opening position initially against the blocking webs and are held there form-fitting. With a further rotation, the predetermined breaking points finally shear off.

For a better understanding of the invention is explained in more detail below with reference to 7 figures. It show the

Fig. 1: a perspective top view of a

Cap with an actuating cap according to a first embodiment before use;

2 shows a cross section through the closure cap according to FIG. 1;

3 shows a cross section through the closure cap according to FIG. 1 during a rotation of the actuating cap;

4 shows a cross section through the closure cap according to FIG. 1 after rotation of the

Actuating cap and thereby opened membrane; 5 shows a side view of a closure cap with an actuating cap according to a second embodiment;

Fig. 6: a perspective top view of a

Closure element and

Fig. 7: a plan view of a

Tamper-evident closure ring.

Fig. 1 shows a perspective view of a

Closure element 2 and actuator cap 7 assembled

Cap in its transport position. The closure element 2 receives on its underside a container 1, which is not shown as such and irrelevant in its nature for the invention. The section of the container 1 shown is in particular a bottle neck with an opening arranged therein.

The actuating cap 7 is in its transition region to the

Closure element 2 concentric of a

Tamper evident ring 42 surrounded, which is fastened by means of predetermined breaking points 41 on the actuating cap 7. The tamper-evident closure ring 42 indicates whether the actuation cap 7 has been rotated relative to the closure element 2 in a predetermined direction of rotation d and, due to this rotation, has opened a chamber 1 1, which can be seen particularly well in FIG. 2, so that a first filled therein Substance has fallen into the underlying container 1 and has mixed with a second substance within the container 1. However, the mixing of the first and second substance should not take place until immediately before

Consumption take place. Fig. 2 illustrates in a cross-sectional view of the structure of

Cap. Its actuating cap 7 initially comprises a flat top wall 8 and a torque tube 10 acting on its underside 9. The torque tube 10 merges at its upper end into the top wall 8 and has a cylindrical shape. With its lower end 10a, the torque tube 10 protrudes into a sleeve 3 of the closure element 2 and lies with its outer wall surface largely sealingly against the inner wall of the sleeve 3. The sleeve 3 encloses this overlapping portion of the torque tube 10 in the circumferential direction completely. When the closure element 2 is attached to the container 1, the sleeve 3 protrudes into the container 1, whereby the chamber 1 1 can be formed at a relatively low height of the cap with maximum volume.

A lower opening 5 of the sleeve 3 is completely covered by a membrane 6, wherein the membrane 6 is fixed by means of a weld 13 on the lower end face 4 of the sleeve 3. The wall thickness should be in the region of the end face 4 between 0.8 mm and 2.5 mm in order to have a sufficient contact surface for the weld 13.

The lower end 10 a of the torque tube 10 is a detachment wedge 14

formed, which projects in the axial direction x and ends in the transport position shown in FIG. 2 immediately above the diaphragm 6. The term "directly" in this context means that there are no further components of the closure cap between the detachment wedge 14 and the membrane 6.

The chamber 1 1 is on the part of the actuator cap 7 from the top wall 8 and the torque tube 10 and on the part of the closure element 2 from the not covered by the torque tube 10 portion of the sleeve 3 and Membrane 6 is formed. In the chamber 1 1, a first substance is stored in powdery or viscous form.

In addition to the sleeve 3, the closure element 2 comprises a

Wall skirt 38, which surrounds the sleeve 3 concentrically and in the axial direction x downwards with this. The wall skirt 38 has an internal thread 39, which in operative engagement with a

Container thread 40 can be brought and serves to releasably connect the closure element 2 with the container 1.

In the transition region from the wall skirt 38 to the sleeve 3 is a bottom 43 of the tamper-evident ring 42 loose on a

Top 44 of the wall apron 38 on.

On the wall apron 38 may also have a second

Tamper evident closure ring 51 attack, which is held by a bead 52 below the container thread 40 and is destroyed when unscrewing the closure element 2 of the container 1. The second tamper-evident ring 51 indicates whether the second substance contained in the container 1 has been manipulated or at least contacted with the atmosphere, regardless of the fate of the first substance stored in the chamber 11.

By a rotational movement of the actuating cap 1 in the direction of rotation d (see Fig. 1) relative to the closure element 2, the torque tube 10 slides in the axial direction x into the sleeve 3 and pushes the membrane 6 with its demolding wedge 14 formed on the lower end 10a. The axial end of the detachment wedge 14 is defined by a rising flank 15 and a cutback 16 which runs back in the axial direction x, the rising flank 5 having a contact region 17 with the membrane 6. After contacting, the membrane 6 is first detached from this contact region 17 of the flank 5. Subsequently triggers in the direction of rotation d in front of the contact portion 17 lying portion 18 of the rising edge 15, the membrane 6 continuously.

As a result of the combined rotational and advancing movement of the detachment wedge 14, the membrane 6 is initially pushed open selectively and, starting from this point, it is pulled off along the weld seam 13.

The combined rotational and advancing movement of the torque tube 10 is achieved by a thread 12 arranged between the actuating cap 7 and the closure element 2, the components of which can also be seen in FIG. 3. The thread 12 comprises on the part of the actuating cap 7, a first threaded member 20 which consists of a first thread 22 and a guide cam 23. On the part of the

Closure element 2, a second threaded member 21 is provided, which in turn consists of a second thread 28 and a

Spiral contour 29 is. Since it is a two-start thread 12 in the illustrations of FIGS. 1 to 6, the respective components of first and second thread 22, 28, helical contour 29 and guide cam 23 are duplicated.

The first thread 22 is associated with the actuating cap 7, whose top wall 8 protrudes in the radial direction y over the torque tube 10. The top wall 8 bends at its radially outer end by approximately 90 ° down and enters a collar wall 19 which concentrically surrounds the torque tube 10. Between the torque tube 10 and the collar wall 19 is thereby formed a downwardly open gap space 53, in which the sleeve 3 in the transport position shown in FIG. 2 only partially and after opening of the diaphragm 6 according to FIG. 4 has completely migrated.

The first thread 22 is integrally formed on the side of the collar wall 19 facing the torque tube 10. The second Thread 28 is located on the outside of the sleeve 3 and protrudes with respect to the sleeve 3 in the direction of the collar wall 19. In this case, the first and second threads 22, 28 overlap both in the radial direction y and in the circumferential direction partially, so that a lifting of the actuating cap 7 of the closure element 2 is not possible because one side 25 of the first thread 22 flat on one side 30th of the second thread 28 abuts (see Fig. 4). In the axial direction x of the first thread 22 is disposed below the second thread 28, that is at a smaller axial distance from the container 1 as the second thread 28th

Thrust forces acting in the axial direction are not transmitted by the first and second threads 22, 28 but by the helical contour 29 and the guide cam 23. The interaction of

Spiral contour 29 and guide cam 23 can be seen particularly well in Fig. 3 and the formation of the helical contour 29 in Fig. 6.

In the embodiment according to FIG. 3, each one exists

Guide cam 23 by way of example from three axially parallel aligned ribs 26. The length of the ribs 26 in the axial direction x is adapted to a slope S of the helical contour 29 such that all ribs 26 stand up evenly from above on the helical contour 29 and thereby an interrupted bottom 24 of the guide cam 23 represent. The slope S is also identical for the first and second threads 22, 28.

In the transport position snaps at least a portion of the at the

Actuator 7 trained guide cam 23,

or the longest in the axial direction rib 26, on a support portion 31 of the helical contour 29. The support portion 31 has no slope S and may be concave recessed to the

Guide cam 23 particularly safe to hold stationary. In this position acts on the actuating cap 7 applied pressure force orthogonal to the support portion 31 and there is no resultant force in the direction of the helical contour 29th

Only after leaving the transport position by rotation of the actuating cap 7 in the rotational direction d, the guide cam 23 passes from the support portion 31 on the top of the helical contour 29 and is supported there until it reaches a Endanschlagswandabschnittes 32. Upon reaching the Endanschlagswandabschnittes 32, the torque tube 10 has penetrated maximally in the sleeve 3 and has the diaphragm 6 half of the lower opening 5 deducted (see Fig. 4).

FIG. 5 shows an alternative embodiment of the actuating cap 7, in which, instead of a plurality of axially aligned ribs 26, an inwardly directed indentation 27 of the top wall 8 and the collar wall 19 is provided. The indentation 27 forms directly from the top wall 8, a guide cam 23, the underside 24 rests flat on the helical contour 29. The

Closure element 2 requires no adaptation for this second embodiment of the actuation cap 7.

Representing all embodiments of the actuating cap 7, the size ratios of the tamper-evident closure ring 42 and the actuating cap 7 are shown in FIG. 5. The tamper-evident ring 42 has an inner diameter D, which is sufficiently dimensioned so that during rotation in the direction of rotation d, the actuating cap 7 with its outer diameter D _a in the axial direction x in the

Originality closure ring 42 can dip.

FIG. 6 shows a perspective view of the closure element 2 and the course of the helical contour 29 and of the associated second thread 28, which are offset parallel to one another in the axial direction x Substantially follows the course of the helical contour 29. After turning the actuating cap 7 by approximately 180 °, the guide cam 23 abuts against an axial direction x extending abutting edge 34, which prevents further rotation of the actuating cap 7 in the rotational direction d. In this end position of the guide cam 23 is in the axial direction x on the already mentioned Endanschlagswandabschnitt 32. The abutting edge 34 at its end facing away from the end abutment wall section 32 transitions at right angles into an inlet 35 of the other second thread 28 and the other helical contour 29 of the double thread 12.

Between a spout 33 of the second thread 28 and the associated Endanschlagswandabschnitt 32, a pawl 36 is formed, which, after the guide cam 23 has moved over it, sets up and prevents rotation of the actuating cap 7 against the intended direction of rotation d. The pawl 36 is formed from the helical contour 29, which at a distance corresponding to a width b of the guide cam 23 to the abutting edge 34 with a

Undercut 37 is provided.

On an outer side 47, an annular groove 48 is introduced into the sleeve 3, into which projections 46 (see FIG. 7) formed on an inner wall 45 of the tamper-evident closure ring 42 protrude. In the circumferential direction uniformly distributed in the annular groove 48 a plurality of blocking webs 49 are arranged, which interrupt the annular groove 48 and prevent co-rotation of the tamper-evident ring 42 in the direction of rotation d of the actuating cap 7. For this purpose, the projections 46 on their in the direction of rotation d the adjacent blocking web 49 facing flank 50 is a rectangular orientation to the inner wall 45 of the tamper-evident closure ring 42. LIST OF REFERENCE NUMBERS

container

closure element

shell

Front sleeve

lower opening

membrane

overcap

cover wall

Bottom lid wall

torque tube

lower end torque tube

chamber

thread

Weld

separating wedge

rising edge

pruning

contact area

Section contact area

collar wall

first threaded element

second threaded element

first thread

guide cam

Bottom guide cams

Side first thread

Ribs guide cams

invagination

second thread 9 spiral contour

0 page second thread

1 support area

2 End stop wall section

3 outlet second thread

4 abutting edge

5 inlet second thread

6 pawl

7 undercut

8 wall apron

9 inside thread wall apron

0 container thread

1 predetermined breaking point

2 tamper evident ring

3 underside tamper evident ring 4 top wall apron

5 inner wall tamper evident ring 6 projection tamper evident ring 7 outside

8 ring groove sleeve

49 blocking bar

50 flank lead

51 second tamper evident ring

52 bead

53 gap space

b Wide guide cams

d direction of rotation

Di inside diameter quality locking ring

Because outer diameter actuating cap

S slope [°]

X axial direction

y radial direction

Claims

claims

1. cap for a container (1), comprising

a closure element (2) which can be attached to the container (1) and which has a sleeve (3) whose lower opening (5) is closed by an impermeable membrane (6),

an actuating cap (7) having a top wall (8) and a downwardly extending thrust tube (10) engaging an underside (9) of the top wall (8), and

a substance-filled chamber (11) formed by the push tube (10), the lid wall (8), a portion of the sleeve (3) and the diaphragm (6), the closure member (2) and the actuator cap (7) are helically movable relative to one another by means of a thread (12) and the thread (12) comprises first and second threaded elements (20, 21), wherein the first threaded element (20) on the actuating cap (7) and the second threaded element (21) is arranged on the sleeve (3), characterized

that the first threaded element (20) consists of a

Guide cam (23) and the second threaded member (21) from a front side of the sleeve (3) arranged helical contour (29) is formed, on which the guide cam (23) is supported.

2. Closure cap according to claim 1, characterized in that the guide cam (23) has a bottom (24) which forms a parallel plane with the helical contour (29).

3. Cap according to claim 1 or 2, characterized

in that the guide cam (23) is formed from a plurality of ribs (26) arranged parallel to one another in the axial direction (x).

4. Closure cap according to claim 1 or 2, characterized

in that the guide cam (23) is formed by an indentation (27) of the cover wall (8).

5. Closure cap according to one of claims 1 to 4, characterized in that the first threaded element (20) comprises a first thread (22) and the second threaded element (21) with the first thread (22) cooperating second thread (28) ,

6. A closure cap according to claim 5, characterized in that the first thread (22) and the second

Thread (28) with their mutually facing sides (25, 30) are supported against each other.

7. Closure cap according to one of claims 5 or 6, characterized in that the guide cam (23) in the axial direction (x) to the second thread (28) is spaced.

8. Closure cap according to one of claims 5 to 7, characterized in that the first thread (22) and / or the helical contour (29) between the second thread (28) and the guide cam (23) is arranged.

9. Closure cap according to one of claims 5 to 8, characterized in that the helical contour (29) follows the course of the first and / or second thread turn (22, 28).

10. Closure cap according to one of claims 1 to 9, characterized in that the actuating cap (7) has a on the Having lid wall (8) engaging and radially to the torque tube (10) spaced collar wall (19).

1 1. A closure cap according to claim 10, characterized in that the collar wall (19) surrounds the torque tube (10) concentrically.

12. A closure cap according to claim 10 or 1 1, characterized

characterized in that the guide cam (23) on the

Collar wall (19) and / or the torque tube (10) and / or the cover wall (8) engages.

13. Closure cap according to one of claims 10 to 12, characterized in that the first thread (22) with respect to the collar wall (19) in the direction of the push tube (10) protrudes.

14. Closure cap according to one of claims 5 to 3, characterized in that the second thread (28) in the radial direction (y) with respect to the sleeve (3) protrudes.

15. Closure cap according to one of claims 5 to 14, characterized in that the first thread (22) and / or the underside (24) of the guide cam (23) and / or the second thread (28) and / or the helical contour (29 ) one

Slope (S) of 5 ° to 30 °, more preferably from 10 ° to 20 °.

16. Closure cap according to one of claims 5 to 15, characterized in that the helical contour (29) at its in the axial direction (x) of the top wall (8) facing the end of a

Supporting region (31) with a slope (S) of 0 ° and / or a relative to the guide cam (23) has a concave shape.

17. A closure cap according to one of claims 1 to 16, characterized in that the thread (12) is designed such that by turning the actuating cap (7) in one

predetermined rotational direction (d) the torque tube (10) with its lower end (10 a) in the axial direction (x) passes through the lower opening (5).

18. A closure cap according to claim 17, characterized in that the predetermined direction of rotation (D) of the actuating cap (7) is directed counterclockwise.

19. Closure cap according to one of claims 1 to 18, characterized in that the membrane (6) in the region of the lower opening (5) by means of a weld seam (13) on an end face (4) of the sleeve (3) is attached.

20. Closure cap according to one of claims 1 to 19, characterized in that the torque tube (10) at its the

Membrane (6) facing the lower end (10a) has at least one in the axial direction (x) above Ablösekeil (14).

21. Closure cap according to claim 20, characterized in that the release wedge (14) counter to the direction of rotation (d) in

Having circumferential direction rising edge (15) and a subsequent cutback (16).

22. A closure cap according to claim 21, characterized in that the rising flank (15) is provided at its axially end (x) projecting end with a contact region (17) which in rotation of the actuating cap (7) (d) first line-like contacted the membrane (6) and then lifted from the end face (4) of the sleeve (3).

23. A closure cap according to claim 22, characterized in that upon further rotation of the actuating cap (7) in the

Direction of rotation (d) in front of the contact region (17) lying portion (18) of the rising edge (15) continuously lifts the membrane (6).

24. A closure cap according to one of claims 19 to 23, characterized in that after a rotation of the

Operating cap (7) the weld (13) with a

Circumferential angle of 160 ° to 200 °, particularly preferably 180 °, is detached from the end face (4).

25. Closure cap according to one of claims 1 to 24, characterized in that the thread (12) has a two-speed movement thread with two first and second

Threaded elements (20, 21).

26. A closure cap according to claim 25, characterized in that the first threaded elements (20) and the second

Threaded elements (21) are each arranged offset by 180 °.

27. A closure cap according to claim 25 or 26, characterized

in that the sleeve (3) has two end faces

Spiral contours (29) with one each

Endanschlagwandabschnitt (32) which is arranged between an outlet (33) of one of the second threads (28) and an axially extending (x) abutting edge (34), wherein the abutting edge (34) end an inlet (35) of the other second thread (28) and its associated

Helical contour (29) intersects.

28. A closure cap according to claim 27, characterized in that on at least one of the two

End stopper wall sections (32) characterized in that a pawl (36) is formed, that the Endanschlagswandabschnitt (32) at a distance corresponding to or greater than a width (b) of the

Guiding cam (23) to the nearest abutting edge (34) interrupted and provided with an undercut (37).

29. Cap according to one of claims 25 to 28, characterized in that both of the first threads (22) span a circumferential angle of 210 ° to 240 °, more preferably from 215 ° to 235 °, most preferably from 220 ° to 230 ° ,

30. Closure cap according to one of claims 25 to 29, characterized in that both of the second threads (28) span a circumferential angle of 100 ° to 140 °, more preferably from 1 15 ° to 125 °.

31. A closure cap according to one of claims 1 to 30, characterized in that the closure element (2) is formed on its side facing the container (1) with a wall skirt (38) which surrounds the sleeve (3) coaxially and in the direction of Projected container (1).

32. A closure cap according to claim 31, characterized in that on one of the sleeve (3) facing side of

Wall skirt (38) an internal thread (39) is formed, which in

Operable engagement with a container thread (40) can be brought.

33. A closure cap according to claim 32, characterized in that the thread (12) has a harder material and / or a greater pitch than the internal thread (39).

34. Closure cap according to one of claims 10 to 33, characterized in that on the collar wall (19) by means of

Predetermined breaking points (41) a tamper-evident closure ring (42) is attached.

35. A closure cap according to claim 34, characterized in that the tamper-evident closure ring (42) rests with its underside (43) on an upper side (44) of the wall apron (38).

36. A closure cap according to claim 34 or 35, characterized

in that the tamper-evident closure ring (42) has an inner diameter (D,) and the actuating cap (7) has a

Outer diameter (D _a ), wherein the inner diameter (D,) is greater than the outer diameter (D _a ) and the

Operating cap (7) during the helical movement in the tamper evident ring (42) in the axial direction (x) is immersed.

37. Closure cap according to one of claims 34 to 36, characterized in that on an inner wall (45) of the

Tamper-evident closure ring (42) a plurality of circumferentially distributed projections (46) are provided, which engage in a on the outer side (47) of the sleeve (3) formed annular groove (48).

38. A closure cap according to claim 37, characterized in that in the annular groove (48) a plurality of circumferentially distributed blocking webs (49) are formed.

39. A closure cap according to claim 38, characterized in that in the predetermined direction of rotation (d) in the direction of

Blocking webs (49) located flanks (50) of the projections (46) are aligned perpendicular to the inner wall (45).