Drinking bottle closure with double seal function for a drinking bottle
Patent Information
- Application Number
- EP2023818313
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-11-25
- Filing Date
- 2023-11-24
- Publication Date
- 2025-10-01
AI Technical Summary
Existing drinking bottle closures have issues with overall height, secure holding of opening and closure positions, and difficulty in releasing the connection from insulated stainless steel bottles, especially when hot beverages are poured, leading to unintentional back rotation and connection difficulties.
A drinking bottle closure with a double sealing function featuring a star-shaped member with non-return profiles and spring-mounted pins that ensure secure rotation direction, reducing overall height and facilitating easy disconnection, while providing precise definition of opening and closing positions and preventing accidental rotation.
The solution enhances safety in the closed position by ensuring only intended rotation, reduces overall height, and allows for easy release from insulated stainless steel bottles, preventing unintentional back rotation and connection issues.
Smart Images
Figure 1.1
Abstract
Description
[0001] Drinking bottle closure with double seal function for a drinking bottle
[0002] The invention relates to a drinking bottle closure with double sealing function for a drinking bottle, in particular an insulated drinking bottle, having the features of the generic term of claim 1 .
[0003] Such a drinking bottle closure is known from DE 10 2019 128 302 B3. This comprises a body base member in which a closure unit is arranged. An upper and a lower sealing level are formed via the closure unit - while the lower sealing level represents the main seal to the interior of the drinking bottle, the upper sealing level prevents liquid residues from dripping out of the cavities of the closure unit even when a drinking bottle fitted with the drinking bottle closure is transported lying down or upside down.
[0004] This closure has proven itself functionally and can be manufactured with a small diameter. However, the ballpen drive unit, via which the closing and opening positions are held independently after the user has previously pressed the pushbutton once, provides for quite long spring-loaded tongues, resulting in a large overall height. Although the closure unit can be positioned with parts inside the neck of the bottle and lowered to the inside of the drinking bottle, this results in a loss of usable volume for storing the beverage. The long spring tongues, however, have the advantage of securely holding the positions once taken. Other drinking bottle closures are known whose closure unit provides a rotating star-shaped member in the manner of the familiar "ballpoint pen drive". However, it has been shown that in the event of impacts and other external influences, unintentional back rotation of the star-shaped member can occur, i.e., the star-shaped member unintentionally returns from the open position to the closed position while the user is drinking from the bottle.
[0005] Furthermore, with insulated stainless steel drinking bottles that have an internal thread, the problem has arisen that the neck of the bottle heats up when hot beverages are poured in and then shrinks onto the subsequently inserted drinking bottle closure when it cools, so that the connection between the drinking bottle and drinking bottle closure is sometimes difficult to disconnect.
[0006] The object of the invention is thus to improve a drinking bottle closure of the aforementioned kind in such a way that the overall height is reduced, that the opening and closure positions are held securely and that the connection to a drinking bottle can be easily released.
[0007] These objects are solved by a drinking bottle closure with a double sealing function for a drinking bottle having the features of claim 1 .
[0008] The drinking bottle closure of the invention includes a body base member in which a closure unit is disposed, preferably providing a releasable connection via a thread or bayonet fitting to facilitate cleaning of the drinking bottle closure.
[0009] As is known per se, an upper and a lower sealing level are formed via the closure unit so that liquid residues are prevented from dripping out of the cavities of the closure unit even when a drinking bottle fitted with the drinking bottle closure is transported lying down or upside down. A ballpen drive unit ensures that firmly defined opening and closing positions are adopted and held.
[0010] The essential advantage of the invention is that the safety in the closed position is additionally increased by the fact that only the intended direction of rotation of the central star-shaped member controlling the stroke movements of the sealing plates is possible in the push-button unit and that the rotation can only be achieved in each case by firm pressure of the user on the push-button, but not accidentally by external influences.
[0011] To this end, the invention provides for the circumferential region on the starshaped member outside the tooth profiles required for the lifting and lowering movements to be provided with a special cross-sectional profile. The crosssection comprises at least one non-return profile which has an abruptly inwardly jumping stop edge against which a spring-mounted pin rests after it has previously been gradually deflected outwardly with the rotation of the star-shaped member by sliding along a region widening radially outwardly in the circumference in a manner similar to a run-up slope before it then springs back again behind the contact edge.
[0012] The spring-mounted pin that scans the locking profile additionally provided on the star-shaped member can be the same as that required for scanning the tooth profile.
[0013] It is also possible to provide, in addition to fixed pins that only scan the tooth profiles, at least one spring-mounted pin only for interaction with the circumferential locking profile.
[0014] Preferably, the spring-mounted pins are equally suitable for scanning the tooth profiles as well as the locking profile around the circumference.
[0015] Preferably, two groups of pins are provided which project radially inwards into the receiving recess and scan the tooth profiles of the star-shaped member, a first group comprising fixed pins and a second group comprising radially resili- ently mounted pins. In particular, the fixed pins, which only scan the raised tooth profiles of the star-shaped member, project radially less far into the receiving recess than the spring-mounted pins, which scan both the raised axially extending tooth profiles and the circumferential locking profiles. In the case of several groups, all pins should be arranged in equal pitch along the circumference of the receiving recess, with the fixed and movable pins arranged in alternating sequence. In the case of two groups with two pins each, this results in similar pins being diametrically opposed. Even with a different number of pins, it is advantageous if at least two movable pins are arranged diametrically opposite each other.
[0016] In connection with an arrangement in uniform pitch with a preferred diametrical arrangement relative to one another, it is preferred to form a corresponding number of backstop profile sections in uniform pitch on the star-shaped member. In this way, at least two movable pins are always fixed to the backstop profiles at the same time.
[0017] Preferably, the star-shaped member has one upper and one lower raised tooth profile each, with the backstop profiles being formed between the tooth profiles on the periphery of the star-shaped member. The fact that the pins are guided in the axial direction between two tooth profiles means that both the opening and closing positions can be defined more precisely than with a ballpen drive unit that has only one tooth profile. The desired opening and closing positions are specified via one tooth profile, and the pins are guided via the other tooth profile during rotation of the star-shaped member and brought into the vicinity of the desired positions on the respective other tooth profile.
[0018] Preferably, the star-shaped member is divided into lower part and an upper part, whereby the parts can be latched together in particular. This facilitates assembly, especially when the star-shaped member has two tooth profiles: when assembling the star shaped member the lower part and upper part are guided into the recess in the control base member from different sides so that the pins are positioned between them in the backstop profile area. The parts are then joined together.
[0019] The diameter of the pushbutton must be smaller than the diameter of the pouring opening at least in those cases in which a detachable connection is provided between the body base member and the closure unit via a thread. In this case, the pushbutton must be reduced in diameter to such an extent that it can be passed through the thread provided for the connection. On the other hand, the pushbutton together with the intermediate housing member connected to it is held against the control base member only by the compression spring. Consequently, there is no lateral guidance, so that the pushbutton can tilt. It is therefore particularly advantageous to form at least three guide webs on the inner wall of the pouring opening to guide the pushbutton. By means of at least three axially extending webs, good lateral guidance can be achieved in a simple manner and tilting can be significantly reduced. The thickness or radial extension of the additional guide webs relative to the inner wall of the pouring opening should at least correspond to the thickness of the threaded webs for the connection to the removable closure unit. Since the closure unit is inserted into the body base member from below, the guide webs can also have a greater thickness than the thread; only abrasive contact of the guide webs with the outer edge of the pushbutton during use should be avoided.
[0020] The invention is explained in more detail below with reference to the exemplary embodiment shown in the drawings, which shows further advantageous features. The figures show in detail:
[0021] Fig. 1 a drinking bottle with attached drinking bottle closure in a perspective view;
[0022] Fig. 2 the disassembled drinking bottle closure in a sectional perspective view;
[0023] Fig. 3 a view of the control base member from above;
[0024] Fig. 4 a section of the control base member in perspective view;
[0025] Fig. 5 a star-shaped member in perspective view;
[0026] Fig. 6 a sectional view through the star-shaped member; Figs. 7, 8 each a unit consisting of a control base member and a starshaped member in perspective view;
[0027] Figs. 9, 10 a detailed section of a top view of the connection between the control base member and the star-shaped member;
[0028] Fig. 11 a side view of pivots guided in the star-shaped member;
[0029] Fig. 12 the drinking bottle with drinking bottle closure in the closed position, in perspective sectional view;
[0030] Fig. 13 the drinking bottle with drinking bottle closure at the beginning of the opening, in perspective sectional view; and
[0031] Fig. 14 the drinking bottle with drinking bottle closure in the open position, in perspective sectional view.
[0032] Figure 15 an alternative embodiment of a body base member in perspective view and
[0033] Figure 16 the body base member according to Figure 15 with a pushbutton.
[0034] Figure 1 shows a perspective view of a drinking bottle 101 with an attached drinking bottle closure 100. The drinking bottle closure 100 includes a body base member 50 having a raised pouring rim 51 surrounding a pouring opening 52. The raised pouring rim 51 may be placed against the lips for drinking directly from the drinking bottle 101 . A closure unit 1 is inserted within the pouring opening 52, of which only a push button 10 is visible, which at the same time represents an upper sealing element which, in the closed state, bears against an elastomer sealing lip 53 which surrounds the pouring opening 52 and which, as an upper sealing element, forms an upper sealing plane together with the push button 10. The drinking bottle closure 100 is shown in a perspective sectional view in Figure 2, with the closure unit 1 removed from the body base member 50. At the upper edge, the sealing lip 53 projects into the pouring opening 52.
[0035] The body base member 50 is designed as a multi-part plastic injection molding piece. The cylindrical pouring opening 52 is limited by a wall of an insert 54.
[0036] A receiving area with a bottle neck thread 56 formed as an internal thread is formed on the insert 54 to receive a bottle neck with an external thread and to connect it tightly to the drinking bottle closure 100. To seal the connection, an elastomeric gasket 59 is overmoulded on the upper end of the receiving area.
[0037] A thread 55 is formed on the inner circumference of the wall, via which the closure unit 1 is received with its external thread 39. In order to connect the closure unit 1 to the body base member 50 or to detach it therefrom, two wings 62 are formed on a lower sealing element 60 of the closure unit 1 . The closure unit 1 can be rotated over this. The removed closure unit 1 can be easily cleaned, since all parts are exposed.
[0038] While the pushbutton 10 also serves as an upper sealing element that abuts the upper sealing lip 53 from below in the closed state, a lower edge of the cylindrical wall of the insert 54 forms an abutment edge 57 that interacts with the lower sealing element 60 of the closure unit 1 and forms a lower sealing plane.
[0039] The closure unit 1 further comprises a round control base member 30 with an the external thread 39 by which the detachable connection to the body base member 50 is to be established. The control base member 30 is thus fixed to the body base member 50 when the drinking bottle closure 100 is in use and forms the fixed part of the closure unit 1 .
[0040] The movable and detachable part of the closure unit 1 comprises:
[0041] - the pushbutton 10;
[0042] - an intermediate housing member 11 connected to the pushbutton 10; - a compression spring 13, which is supported on an inner ring 33 of the control base member 30 and on the intermediate housing member 11 ;
[0043] - a star-shaped member 20, which in the illustrated embodiment comprises a lower part 21 and an upper part 22;
[0044] - the sealing element 60 with a peripheral gasket 63 with a U-shaped profile cross-section;
[0045] - a pre-venting valve 40, which is coupled by a shaft 42 to a protuberance 14 formed at the top of the intermediate housing member 11 and which is inserted by a sealing piston 41 into a central venting opening 61 of the sealing element 60.
[0046] The star-shaped member 20 is guided with its upper part 22 in the protuberance 14 and is supported with its lower part 21 on the sealing element 60.
[0047] The pre-venting valve 40 has a dual function in the drinking bottle closure 100 according to the invention. On the one hand, it serves as a valve to relieve a potential overpressure in the interior of the container directly at the beginning of the opening process, as will be explained later. On the other hand, it serves as a central shaft for mechanically connecting the intermediate housing member 11 together with the pushbutton 10 to the lower sealing element 60. In its function as a connecting element, the pre-venting valve 40 is loaded in tension via the compression spring 13.
[0048] Figure 3 is a top view of the control base member 30. On an outer rim, flow openings 34 are provided in alternating sequence, which serve to pass liquid from the interior of the drinking bottle to the pouring rim, and further recesses 38 in which finger-shaped supports of the intermediate housing member are guided. A central recess 31 serves to receive the star-shaped member. Four pins 35, 37 project into the central recess 31 , which are divided into two groups:
[0049] - Fixed pins 37 of a first group of pins project into the central recess 31 from a web 32 surrounding the central recess 31 .
[0050] - Movable pins 37 of a second group extend into the central recess 31 from a radially movable, arcuate support arm 36; the movable pins 37 extend radially further into the center of the central recess 31 than the fixed pins 37.
[0051] Figure 4 is a perspective view of a section of the control base member 30, illustrating the different shapes of the two groups of pins 35, 37. The immovable pins 37 formed on the fixed part of the web have a shape optimized for interaction with the tooth profiles of the star-shaped member. The rounding on the side which is at the front in the direction of rotation facilitates scanning of the tooth profile.
[0052] The pins formed on the radially movable support arm 36 have the same shape in an area close to the support arm. Attached to this is a crowned section which is provided for interaction with the backstop profile between the tooth profiles.
[0053] Figure 5 shows a perspective view of the two-part star-shaped member 20. A central recess 29 is provided on the star-shaped member 20, through which the pre-venting valve is passed. A tooth profile 24 is formed on the upper part 22 and a tooth profile 23 is formed on the lower part 22 of the star-shaped member 20. The tooth profiles 23, 24 on the rotatable star-shaped member 20 interact with the stationary pins on the control base member according to the known principle of the so-called "ballpoint pen drive", where each axial displacement of the star-shaped member causes a rotation of the same by a certain angular step. The two-part design facilitates assembly. One of the two elements is brought up to the control base member from above and one from below so that the pins are positioned between the tooth profiles, and then the two parts are locked together to form the star-shaped member 20.
[0054] Essential to the invention is the circumferential area between the tooth profiles 23, 24, which recedes significantly from the areas with the tooth profiles 23, 24 so that the edges of the tooth profiles 23, 24 are wide enough to be reliably scanned by the pins of the control element. However, the said circumferential region is not cylindrical, but is designed in such a way that, in the intended direction of rotation, the circumference gradually widens outwards at least at one point in the form of a run-up slope and then abruptly recedes radially inwards again.
[0055] The peripheral area forms a locking profile 25 for the pins on the control base member 30. The sectional view through the star-shaped member 20 in Figure 6 clearly shows the profiling in the locking profile 25: a total of four triangular profile sections are formed, each forming a backstop profile section 26. One of the movable pins 35 initially slides on the run-up slope 26.1 and is thus pressed outward. After passing the tip of the triangular profile, it springs back in and is then fixed to the stop edge 26.2 so that the star-shaped member 20 cannot rotate back in the opposite direction.
[0056] In Figure 7, the control base member 30 and the star-shaped member 20 assembly is shown in perspective with a segment separated from the control base member 30 to reveal a pin 35 in engagement with the locking profile 25. The pin 35 is formed on the support arm 36, which is a continuation of the web 32, but the support arm 36 has the adjacent portion of the inner ring 33 excluded so that the support arm 36 is radially movable and can spring away outwardly.
[0057] Figure 8 shows the same view of the control base member 30 and the starshaped member 20 as in Figure 7, with the support arm 36 springing outward with the pin 35.
[0058] Figures 9 and 10 each show a detailed section of a top view of the connection between the control base member 30 and the star-shaped member 20: In Figure 9, the support arm 36 is spring-loaded. The pin 35 is located behind the locking edge 26.2. As indicated by the arrows, reverse rotation of the starshaped member 20 - counterclockwise in Figure 9 - is not possible relative to the control base member 30. If, on the other hand, the star-shaped member 20 is rotated in the other direction, as shown in Figure 10, the pin 35 can slide along the run-up slope 26.2, causing it to move outward together with the support arm 36. Figure 11 is a side view of a pin 37 guided between the tooth profiles 23, 24 on the star-shaped member 20, one of the fixed pins being selected as an example in this illustration; the spring-mounted pins are considered to be of the same type with respect to their interaction with the tooth profiles 23, 24. For illustrative purposes, the pin 37 is shown in Figure 11 two times at different axial positions with respect to the central axis of the star-shaped member 20 extending from bottom to top, and also appears to have migrated laterally. In fact, the position of the pivot 37on the control base member 30 is fixed, while the axial position of the star-shaped member 20 changes as it moves. Similarly, the circumferential area scanned by the fixed pin 37 changes as the star-shaped member 20 rotates.
[0059] The pin 37 is positioned in a low lying depression of the lower tooth profile 23 at the position shown on the lower left. This position is to be assigned to the closure position of the drinking bottle closure. There, the pin 37 does not rest firmly against the tooth profile 23, so that an unintentional partial opening of the closure unit via the pin 37 and the star-shaped member 20 is avoided. Rather, by allowing the pin 37 to move to a certain extent, geometric tolerances or settlement phenomena on the elastomeric elements can be compensated for, and the sealing planes are kept tight by the force of the compression spring.
[0060] At the position shown at the top right, the pin 37 is in an open position. Here it is in direct contact with the tooth profile 23, because the two sealing planes of the closure unit must be held open against the force of the compression spring due to the positive contact.
[0061] The direction of rotation of the star-shaped member 20 is indicated by the block arrow. In the direction of rotation, the pin 37 is rounded to slide better along the tooth profile 23. The upper tooth profile 24 serves to first catch the pins 37 during the rotation of the star-shaped member 20 so that they do not rise too far upwards, and then to prepare the further movement of the pins 37 into the depressions on the lower tooth profile 23. The operation of the drinking bottle closure 100 is illustrated at various stages in the sectional views of Figures 12 through 14:
[0062] Fig. 12 shows the closure state. The closure unit 1 is inserted into the body base member 50. The double-walled drinking bottle 101 is connected to the body base member 50 via its bottle neck 102. The seal between them is provided by the gasket 59. The pushbutton 10 rests against the sealing lip 53 and closes the upper sealing plane. The sealing element 60 rests with its gasket 63 against the lower contact edge 57. In this lower sealing plane, the direct sealing with respect to the interior of the drinking bottle 101 takes place, while at the upper sealing plane, liquid residues located inside the closure unit 1 are retained, so that the drinking bottle 101 with the drinking bottle closure 100 can also be transported lying upside down.
[0063] In addition to the known double sealing function with the two sealing levels, the drinking bottle closure 100 according to a preferred embodiment of the invention provides a further additional function. In the closure position shown in Figure 12, the pre-venting valve 40 with its sealing piston 41 is drawn into the venting opening 61 in the lower sealing element 60 and seals it.
[0064] If the user presses the pushbutton 10 to open the drinking bottle closure 100, as shown in Figure 13, the intermediate housing member 11 first lowers slightly without already axially displacing the star-shaped member 20. Only the sealing plunger 41 of the over the pre-venting valve 40 is pushed out of its sealing seat. If there is an excess pressure in the interior of the drinking bottle 101 , this can be compensated at least partially within the volume of the closure unit 1 between the upper and lower sealing elements. The upper and lower sealing planes each remain closed during this phase.
[0065] With further pressure on the pushbutton 10, the movable part of the closure unit 1 is lowered significantly so that both the pushbutton 10 lifts off the sealing lip 53 and the sealing element 60 lifts off the abutment edge 57. The pouring opening 52 is now open. Liquid from the drinking bottle 101 can flow through the flow openings in the control base member 30.
[0066] Since the star-shaped member 20 was also moved axially with the further pressure for opening, it rotates as a result of the engagement of the pins that scan the tooth profiles. This first brings about an opening position that holds the sealing elements of the closure unit in the opening position shown in Figure 14. Subsequent further pressure brings about a position of the pins between the tooth profiles which again permits expansion of the compression spring 13 so that the sealing elements 10, 60 are pushed back into their sealing position.
[0067] Figure 15 shows an alternative embodiment of a body base member 50' in perspective view. The shape with pouring rim 51 , pouring opening 52, sealing lip 53, etc. corresponds in principle to the shape of the body base member 50 shown in Figure 2. The difference is that a total of four guide webs 58' are formed on the inner wall of the pouring opening 52, offset at 90° to one another, and extend over part of the height of the pouring opening 52, namely over the upper height region. The guide webs 58' extend radially inwardly from the wall at least as far as, or even beyond, the riches forming the thread 55.
[0068] As shown in Figure 16, where the closure unit with the pushbutton 10 is inserted into the body base member 50', the guide webs 58' are formed in that height region of the pouring opening 52 in which the pushbutton 10 moves. If the user presses the pushbutton 10 in a peripheral area rather than centrally, the pushbutton 10 may tilt. In this case, the outer edge of the pushbutton 10 rests against at least one of the guide webs 58', limiting the degree of tilt. In addition, the pushbutton centers itself within the pouring opening 52 via the guide webs 58' in all phases of movement. Reference signs:
[0069] 100 drinking bottle closure
[0070] 101 drinking bottle
[0071] 1 closure unit
[0072] 10 push button
[0073] 11 intermediate housing member
[0074] 13 compression spring
[0075] 14 protuberance
[0076] 20 star-shaped member
[0077] 21 lower part
[0078] 22 upper part
[0079] 23 lower tooth profile
[0080] 24 upper tooth profile
[0081] 25 locking profile
[0082] 26 backstop profile section
[0083] 26.1 run-up slope
[0084] 26.2 stop edge
[0085] 30 control base member
[0086] 31 central recess
[0087] 32 web
[0088] 33 inner ring
[0089] 34 flow-through opening
[0090] 35 pin
[0091] 36 support arm
[0092] 37 pin
[0093] 38 recess
[0094] 39 external thread
[0095] 40 pre-venting valve
[0096] 41 sealing plunger
[0097] 42 shaft
[0098] 50; 50' body base member
[0099] 51 pouring rim
[0100] 52 pouring opening
[0101] 53 sealing lip
[0102] 54 insert
[0103] 55 thread
[0104] 56 bottle neck thread
[0105] 57 abutment edge
[0106] 58, 58’ guide webs
[0107] 59 gasket sealing element venting opening wing gasket
Claims
Claims:1 . Drinking bottle closure (100) with double sealing function for a drinking bottle (101 ), at least comprising:- a body base member (50; 50') having a pouring rim (51 ) surrounding a pouring opening (52),- a first displaceable sealing element (60) for abutment with a lower abutment edge (57) on the body base member (50; 50') surrounding the pouring opening (52);- a ballpen drive unit comprising at least one pin (35, 37) fixedly arranged relative to the body base member (50; 50') and a star-shaped member (20) which is rotatable and displaceable relative to the body base member (50; 50') and to which the sealing element (10, 60) is connected,- wherein the star-shaped member (20) has at least one raised tooth profile (23, 24) formed on the outer circumference, along which the pin (35, 37) is guided in a scanning manner,- a second displaceable sealing element for abutment against an upper abutment edge surrounding the pouring opening (52) on the body base member (50; 50'); characterized in that- a control base member (30) is provided which is connected to the body base member (50; 50') and has a central recess (31 ) for receiving the star-shaped member (20), at least one pin (35) projecting radially from there into the recess (31 ) and being formed resiliently on the control base member (30) or being fastened thereto, and- the star-shaped member (20) is provided on its outer circumference, outside the raised tooth profile (23), with at least one backstop profile section (26) which has at least one run-up slope (26.1 ) and an adjoining stop edge (26.2) on which the resiliently mounted pin (35) can be fixed.A drinking bottle closure (100) according to claim 1 , characterized in that the resiliency supported pin member (35) is supported at the end of an arcuate support arm (36) extending along a portion of the periphery of the receiving recess (31 ). A drinking bottle closure (100) according to claim 1 or 2, characterized in, in that two groups of pins (35, 37) are provided, which project radially inwards into the receiving recess (31 ) and scan the tooth profile of the star-shaped member (20), a first group comprising fixed pins (37) and a second group comprising radially resiliency mounted pins (35), in that the fixed pins (37) project radially less far into the receiving recess (31 ) than the spring-mounted pins (35) and only scan the raised slotted track(s) (23, 24) of the star-shaped member (20), and in that the axially resiliently mounted and longer pins (35) scan the raised tooth profile(s) (23, 24) and the backstop profile section (26). A drinking bottle closure (100) according to claim 3, characterized in that, in that all the pins (35, 37) are arranged in uniform pitch along the circumference of the receiving recess (31 ),- the fixed and the movable pins (35, 37) are arranged in alternating sequence, and in that at least one backstop profile section (26) is formed on the circumference of the star-shaped member (20) for each movable pin (35). A drinking bottle closure (100) according to claim 3 or 4, characterized in, in that the first group and the second group of pins (35, 16) each comprise two pins, and- that the pair of fixed pin members (37) and the pair of movable pin members (35) are respectively arranged at diametrically opposite positions on the receiving recess (31 ).A drinking bottle closure (100) according to any one of the preceding claims, characterized in that the star-shaped member (20) comprises an upper and a lower raised tooth profile (23, 24), respectively, between which tooth profiles (23, 24) the backstop profile sections (26) are formed at the periphery. A drinking bottle closure (100) according to any one of the preceding claims, characterized in that the star-shaped member (20) comprises a lower part (21 ) having a lower tooth profile (23) and an upper part (22) fixedly connected thereto and having an upper tooth profile (24), wherein the backstop profile section (26) is formed on the lower part (21 ) or on the upper part (22) of the star-shaped member (20). Drinking bottle closure (100) according to one of the preceding claims, characterized in that at least three guide webs (58') for lateral guidance of the pushbutton (10) are integrally formed on the body base member (50') on the inner wall of the pouring opening (52).