Lid unit for a water bottle

Abstract

The invention relates to a lid unit for a water bottle (200; 200'), comprising at least one closure unit (100; 100') to be connected to the water bottle (200; 200'), and a lid (30; 30') which, in the closed state, covers a pouring opening, and comprising a removable accessory (60; 60') having a coupling element (61; 61') capable of connecting to the lid (30; 30'; 30"). The lid (30; 30') has an attachment region (80; 80') for attachment of the removable accessory (60; 60'), in which region a lid wall is perforated with at least one depression (81; 81') into which a coupling element (61; 61') of the accessory (60; 60') can be inserted, which coupling element can be connected to the lid (30; 30') by cooperation of shapes following a rotational movement.

Description

LID UNIT FOR A WATER BOTTLE Scope of the invention

[0001] The invention relates to a lid unit for a water bottle comprising a closure unit to be connected to the water bottle and a removable accessory. State of the art

[0002] In certain situations, it is desirable to be able to attach an accessory to a water bottle. For example, to allow a user to move around easily with the bottle, it is desirable to be able to carry it on their wrist or secure it to a backpack when it is placed in a side pocket. A retaining loop or ring could be attached to the bottle or its lid using protruding studs or recessed mounting points. However, protruding studs would be visually and tactilely bothersome. Perforations in the lid would also be visually unappealing; moreover, nothing would prevent residual drips from leaking out.In addition, known accessories permanently fixed to the lid, such as retaining loops, are inconvenient when the bottle is used in another way, for example, when the bottle is placed in the cup holder of a private car. Disclosure of the invention

[0003] The object of the invention is therefore to allow a connection of a closure unit to accessories, such as, but not limited to, retaining accessories, for example to a retaining buckle, a strap or a retaining ring, without having to provide for this optically or haptically annoying attachment points and / or without compromising the anti-drip security of the closure unit.

[0004] This objective is achieved by a bottle lid unit comprising at least one closure unit to be connected to the bottle, with at least one spout element, which surrounds at least one pouring opening that can be closed, and with a lid, which in the closed state covers the pouring opening, and comprising a removable accessory having a coupling element capable of connecting to the lid;

[0005] characterized in that: - the cover has a fastening area for the attachment of the removable accessory, in which a wall of the cover is perforated with at least one hollow, into which the coupling element of the removable accessory can be inserted, which can be connected to the cover by cooperation of shapes as a result of a rotational movement; and - an elastic membrane, which covers the hollow, is disposed below the hollow, the membrane being designed such that when the coupling element is introduced into the hollow, it deflects by elastic deformation and after the implementation of the rotational movement applies itself against the coupled coupling element.

[0006] The invention provides for equipping the closing unit with at least one fastening zone, in which a coupling element can be connected to the cover by cooperation of forms and be detached again, without increasing the construction height of the cover in a deleterious manner and without producing openings in the cover through which residual liquid would be likely to leak or dust could enter, including when no coupling element is inserted in the fastening zone.

[0007] A membrane is defined as a component made of an elastomeric material, preferably with a small thickness relative to its surface area, to allow for easy deformation, and which is attached to the cover, preferably at the edge. The deformability should be chosen so that the coupling element can be inserted into the recess without excessive force. The membrane's surface area is at least as large as the recess, and an edge zone surrounding it is completely covered. Preferably, the membrane is designed in an annular area between the central recess and its attachment at the edge, like a rubber skin with a layer thickness of 1 mm to 2 mm.

[0008] The membrane ensures that the cavity, necessary for the passage of the coupling element, always remains closed towards the inner space of the cover, regardless of whether a coupling element is inserted or not.

[0009] One advantage of the invention lies in the fact that covering the cavity with the membrane provides a fastening zone that has no distracting optical effect and does not require any additional mounting height in the lid. This fastening zone can therefore also be incorporated into very flat lid designs.

[0010] Attaching a removable accessory is preferably done by a combined push-in and twisting motion of the coupling element, as is removing the accessory. The removable accessory can be coupled to and uncoupled from the closure unit, thus allowing for a releasable connection; that is, configured to be detachable from the bottle, movable from one bottle to another, or even replaceable or repairable, as many times as the user desires.

[0011] Advantageously, the accessory is configured to be removable from the locking unit. The connection of the coupling element to the cover of the locking unit is characterized by a linkage that allows the accessory to be temporarily and reversibly attached. This linkage is said to be releasable. The coupling system according to the invention is adapted to allow the user to connect and disconnect the removable accessory from the cover at will. Thus, the accessory can be removed from or detached from the cover. "Removable" means that the user can remove or replace the accessory at will, attach or detach it at will, without disassembly, whether temporarily or permanently.

[0012] Another advantage is that the pre-stressed membrane applied to the bottom of the coupling element after the removable accessory is fitted provides additional locking to the connection due to friction forces, so that no additional snap-fit ​​connection, difficult to overcome, needs to be provided in the cooperative connection of the shapes of the coupling element and the cover in order to lock the removable accessory fitted to the closing unit.

[0013] The use of the lid unit according to the invention is described below in association with a water bottle. This includes water bottles, cups, flasks, or other insulated beverage containers.

[0014] Advantageous embodiments of the invention provide: - that the lid has below the hollow a receiving support, in which the membrane is held and in which the coupling element or parts thereof can be immobilized by cooperation of shapes following a rotational movement; - that a closing element is provided, which is connected to the elastic membrane and which is placed inside the periphery of the hollow, as long as no coupling element is inserted; - that the closing element is made in one piece together with the membrane; - that the membrane has on its lower face at least one trunnion, which is also formed of an elastomer and with which the membrane rests on another fixed part in the lid;- that the membrane has on its underside at least one deformable trunnion, which is also made of an elastomer and / or which is made in one piece with the membrane and with which the membrane rests on another fixed part in the closing unit; - that the lid unit includes at least one removable accessory that can be coupled in the fastening area with a coupling element that has a locking element, which can be guided through the hollow and after a rotational movement passes under the wall of the lid; - that the hollow and the locking element are respectively in the form of an oblong hole and that the receiving support has a guide slide for the locking element, in which the locking element is guided so as to be able to be rotated to an angle of less than 360°;- that a closing element also in the form of an oblong hole is connected to or formed on the membrane, that the guide slide is made in such a way that the locking element inserted through the hollow can be rotated 90° into a final position, that in the final position the closing element is arranged transversely with respect to the locking element and that the locking element has on its underside a recess into which the closing element engages; - that the removable accessory includes a retaining loop or a ring, which is connected to the coupling element.

[0015] Advantageous embodiments are described in more detail below.

[0016] Since the holding area is advantageously located in the center of a cylindrical lid, a receiving support, which holds the membrane, can be situated entirely beneath one underside of the lid. The partial sections, which in any case barely protrude downward from the lid wall, are located, when the lid is closed, around the spout opening within the recessed area, which is enclosed by a spout rim on the closing unit.

[0017] The coupling element can, for example, be used to attach a retaining loop or ring. This facilitates the portable use of a water bottle equipped with the lid unit according to the invention. It is also possible to permanently attach the coupling element to a backpack to secure the water bottle, cup, or other beverage container. Furthermore, decorative elements such as figurines can be attached to the lid via the coupling element.

[0018] Preferably, the membrane has a closing element on its upper surface, shaped so that it engages from below in the recess in the lid housing when the membrane is initially relaxed. The recess can be closed via this element, so that the closing element is flush with the outer surface of the lid and is purely decorative. When the coupling element is inserted into the recess, the closing element has an elastic stroke, as the membrane is stretched elastically. Preferably, the closing element is made as a single piece with the membrane. However, it can also be a part made of a rigid plastic material, which is attached, for example, by gluing, to the membrane.

[0019] According to one embodiment of the invention, the closing element engages with the membrane from below in a recess in the locking element and creates a connection through the cooperation of additional shapes. This connection prevents the coupling element from being unintentionally rotated. The connection through the cooperation of additional shapes is broken by elastic deformation, due to the user returning the coupling element to the unlocked position by reverse rotation.

[0020] According to another embodiment of the invention, the recess in the lid and the locking element are respectively oblong-shaped holes with geometrically similar contours. A gap remains between the outer contour of the locking element and the inner contour of the recess. The locking element is inserted through the recess and engages with a receiving support below the recess. The coupling is achieved by rotating the coupling element 90°. During this rotation, the locking element is guided in a guide slide within the receiving support until it comes to rest against fixed stops that define the angle.

[0021] The connection can also be established as a result of a rotational movement of the locking element to a larger angle, but this should be less than 360°, so fixed stops can be provided, so that the locking element occupies a defined angular position relative to the cover element, in which a durable connection by cooperation of forms is guaranteed.

[0022] Another preferred embodiment of the invention provides for a removable accessory a coupling element comprising a disc-shaped support plate and, below it, a connecting trunnion with a diameter reduced compared to the support plate. A locking element, which has an oblong-shaped outer contour, is attached to the connecting trunnion. On the upper face of this element is a guide cam, which, during rotation, provides guidance for locking by means of the cooperating shapes within the cover.

[0023] Furthermore, it is advantageous here for the membrane to have, in the area of ​​the closure element located above it on its underside, at least one central trunnion, also made of an elastomer, with which the membrane rests against another fixed part in the lid. In this way, the membrane and the closure element can not only be held in the recess due to its residual stress, but can also be pushed upwards by the trunnion. As soon as the coupling element is inserted from above, the trunnion is compressed or bent, so that the membrane retains its free movement during the coupling process.

[0024] Alternatively or in addition, such support can be obtained from the fact that the membrane has in the area of ​​the outer edge on its underside at least one edge bead extending downwards, which is also formed of an elastomer and with which the membrane rests on another fixed part in the cover. Description of the figures

[0025] The invention is explained in more detail below with reference to the embodiments shown in the drawings. The figures show, respectively, in perspective view:

[0026] an insulated cup with a closed closure unit;

[0027] the insulated cup with the open closure unit;

[0028] an exploded view of the insulated cup with the closing unit;

[0029] a removable accessory with a retaining loop;

[0030] a cover for the closing unit with the removable accessory that can be coupled in cup;

[0031] the lid with the removable accessory coupled in a cup;

[0032] a detailed enlarged representation of the

[0033] the lid from below

[0034] a closing unit according to a second cross-sectional embodiment;

[0035] the closing unit according to the with a coupled removable accessory;

[0036] a closing unit according to a third cross-sectional embodiment;

[0037] the closing unit according to the with a coupled removable accessory; and

[0038] the lid unit in a sequence of movements to remove a removable accessory coupled to the closing unit. Detailed description of the invention

[0039] Lamontre, in a perspective view, shows a closable insulated cup consisting of an insulated bottle 200 and a closure unit 100 screwed onto it. The closure unit 100 comprises a base element 20, which is directly connected to the bottle 200, and a pivoting lid 30, which is pivotally connected to the base element 20 by means of pivot axes 31.

[0040] Lamontre in another perspective view the beverage container consisting of the flask 200 and the closure unit 100. The lid 30 is pivoted downwards around the pivot axes 31 in comparison to the.

[0041] Due to the pivoting of the lid 30, a spout element 10 mounted elastically inside the base element 20 is no longer held by cooperation of shapes, so that due to the force of a spring acting between the base element 20 and the spout element 10, it was pushed vertically upwards.

[0042] As can also be seen in the figure, a particular contour of a spout edge 12 is provided on the spout element 10. On the face opposite the lid 30, the spout edge 12 extends with its upper edge in a horizontal plane, relative to which the median axis extends as a normal. Conversely, the upper edge of the spout edge 12 slopes downward on the face facing the lid 30 and follows the pivoting path of the lid 30. This allows that, upon subsequent closure, the lid 30, in contact with the edge 12, slides along this spout edge 12 and, in so doing, presses the spout element 10 and moves it further inside the base element 20, again against the force of the internal spring element.

[0043] When the lid 30 is in the closed position shown on the figure, the elastically mounted spout element 10 is also held in its lowered position inside the base element 20. This is why the lid 30 forms a stop device.

[0044] This is an exploded perspective view of the 200 bottle with the closure unit 100. In the upper area, the spout element 10 with its spout edge 12 can be seen. It has an inlet tube 11 projecting downwards.

[0045] The base element 20 has a contiguous element with a top edge, which forms a spout edge 22. Its contour extends analogously to the contour of the top edge of the spout edge 12 on the spout element 10, so that the two together form a uniform edge when the spout element 10 is lowered into the base element 20.

[0046] The base element 20 has a bearing 21 for the pivot axes of the lid 30. A neck seal 55 is integrated between the neck 210 of the bottle 200 and the base element 20, in order to seal the connection between them.

[0047] A fungiform sealing element 51 is fixedly positioned in the base element 20 and serves to seal a pouring opening in the spout element 10. The sealing element 51 is preferably made of an elastomeric material.

[0048] In addition, a spring element 52 is provided, preferably also made of an elastomeric material, particularly silicone, and having the shape of a short tubular section. A sealing tunnel is formed inside the spring element 52, through which the inlet tube 11 of the base element is guided. Furthermore, the spring element 52 can be axially compressed along its median axis, causing elastic deformation, which allows the spout element 10 to be lifted vertically relative to the base element 20 as soon as the lid 30 has been moved laterally by pivoting.

[0049] Another elastomer part is a vent closure element 16, which is fixed to the underside of the spout element 10 and which closes a vent opening not visible here in the base element 20, when the spout element 10 is lowered onto the base element 20.

[0050] Lamontre provides a removable accessory 60, which, in addition to a retaining loop 64, has a coupling element 61 comprising a disc-shaped support plate 63 and, beneath it, a connecting trunnion 62 with a diameter reduced relative to the support plate 63. A locking element 65, which has an oblong-shaped outer contour, is attached to the connecting trunnion 62. On its lower face is a recess 66, and on its upper face is a guide cam 67, through which guidance is provided during rotation for immobilization by the cooperation of forms within the cover.

[0051] The figure shows the cover 30 together with the removable accessory 60, which can be coupled. The cover 30 has a mounting area 80 on its upper surface. This mounting area 80 is formed within a cover shell, which is manufactured as a separate part. Different types of cover shells allow the cover 30 to be produced with or without the optional mounting area 80 for connection to a removable accessory 60.

[0052] The attachment zone 80 has in the center a hollow 81 in the shape of an oblong hole, which is surrounded by a receiving support 82. In the receiving support 82, below the hollow 81, is fixed an elastic membrane 70, which is put in place with an edge zone from below on the attachment zone 80 and covers the hollow 81 with a central zone.

[0053] The broad arrows indicate the movements required to attach the removable accessory 60: first, a downward movement to insert the connecting trunnion 62 through the recess 81 into the receiving support 82; and second, a rotational movement to secure the locking element 65, which is formed at the bottom of the connecting trunnion 62 by the interaction of shapes on the cover. Removal is carried out in the reverse order.

[0054] The watch features the removable accessory 60 already coupled to the cover 30. The marked area is shown enlarged on the.

[0055] The coupling element 61 rests in the attachment zone 80 with the edge of its support plate 63 on a shoulder, which surrounds the hollow 81. The locking element 65 is located below it in the receiving support 82. The elastic membrane 70 is deformed by the pressed locking element 65.

[0056] Lamontre shows parts of the cover 30 viewed from below. On the underside of the clamping zone 80 are two guide paths for a guide slide 83, which originate from the recess 81. The guide cams 67 of the coupling element 61 (cf.) engage in these paths and predefine the possible angle of rotation around which the coupling element 61 can be rotated relative to the clamping zone 80. Near the ends of the guide paths of a guide slide 83 are formed stop elements 84, which the locking element 62 strikes in its final position, thus limiting the angle of rotation.

[0057] Lamontre presents another embodiment of a 200-liter insulated water bottle that can be closed, and of a closure unit 100' screwed onto it, shown in section. The closure unit 100' comprises a base element 20' with a spout edge 22', which is directly connected to a thread 201' of the 200-liter water bottle, and a simple lid 30' screwed into a base element 20'. The lid 30' covers a pouring opening 24' inside the spout edge 22'. The lid 30' engages via a male thread 35' into a female thread 23' on the base element 20' and establishes a liquid-tight seal against the liquid via a sealing ring 32'.

[0058] A fastening zone 80' has a central oblong-shaped recess 81', which is surrounded by a receiving support 82'. An elastic membrane 70' is fixed to the receiving support 82' below the recess 81'. This membrane, with its lower edge, is positioned over the fastening zone 80' and covers the recess 81' with its central area. At the top, the membrane 70' is completed by a shaped closure element 71', also made of elastomer, which engages with and fills the recess 81'. Its upper surface is flush with the recessed area on the upper surface of the fastening zone 80', which surrounds the recess 81'.

[0059] The same 200' canteen shown here can be closed with the 100' closure unit as shown here. Furthermore, a removable accessory 60' is connected to the 30' lid. The removable accessory 60' includes a retaining ring 64', which is pivotally housed on a coupling element 61'. The coupling element 61' rests with the edge of a support plate 63' on a shoulder in the securing area 80', which surrounds the recess 81'. A locking element 65' is located below the recess 81' in a receiving support 82'. An elastic membrane 70', which seals the receiving support 82' from below, is deformed by the locking element 65' being pushed in and is applied with a closing element 65' in a recess 66' against the locking element 65'.

[0060] Lamontre presents a third embodiment of a 100" closure unit in cross-section. This comprises a 20" base element with a 22" spout rim and a simple 30" lid that screws onto the 20" base element. The 20" base element can be connected to a beverage container such as a water bottle or insulated cup via a 25" thread. The 30" lid covers a 24" pouring opening inside the 22" spout rim. It engages with a 23" female thread on the 20" base element via a 35" male thread and establishes a liquid-tight seal with the base element via a 32" sealing ring.

[0061] A 80" attachment zone has a central oblong-shaped recess 81" surrounded by a receiving support 82". An elastic membrane 70" is fixed to the receiving support 82" below the recess 81", which is positioned with an edge zone from below onto the attachment zone 80 and covers the recess 81" with a central zone. At the top, the membrane 70" is completed by a shaped closure element 71", also made of elastomer, which engages in and fills the recess 81". Its upper surface is flush with the recessed area on the upper surface of the attachment zone 80", which surrounds the recess 81".

[0062] The difference compared to the previously described variants of closure units lies in the fact that the 70'' membrane has a 72'' trunnion in the center with which it rests on an intermediate 36'' base in the 30'' cover. In this way, the area of ​​the 70'' membrane, which is immediately below the 81'' hollow, is pressed from below on the edge area of ​​the 30'' cover around the 81'' hollow, so that the 71'' closure element engages completely in the 81'' hollow.

[0063] Another difference lies in the attachment of the 70" membrane. This membrane has a 74" bead on its edge, which secures it in an annular groove. The annular groove is formed between the underside of the upper cover housing and a separate 34" insert element. The 34" insert element also includes a lower screw body with a male thread and the 36" intermediate base.

[0064] The same 100" closure unit is shown as in the previous one, with the removable accessory 60 already described for the previous one, and the retaining loop 64 being connected to the 30" cover. The coupling element 61 rests with the edge of its support plate 63 in the clamping zone 80. A locking element 65 is located below the recess 81". The elastic membrane 70" is tensioned by the depressed locking element 65, which is held in the groove due to its edge clamping. It applies pressure with its closure element 71" against the locking element 65. Its pivot 72" is compressed and elastically deformed, creating a spring return force that increases the pressure of the closure element 71" on the locking element 65.

[0065] After the removal of the removable accessory 60, the membrane 70 returns to its initial position, and the trunnion 72'' again occupies its initial cylindrical configuration, so that the closing element 71'' engages in the hollow 81'' and is held there, as shown on the.

[0066] The watch shows the sequence of movements during the removal of the removable accessory 60' with the retaining ring 64'. In the image on the left, the removable accessory 60' is fixed in the fastening area 80' on the cover 30'. Part of the coupling element 61' is located above the upper face of the cover 30'.

[0067] For the central image, the removable accessory 60' has been rotated 90°. Thus, the oblong hole-shaped locking element is now directly below the similarly shaped recess.

[0068] As shown on the far right of the figure, the cooperative connection of shapes is thus broken, and the locking element 65' of the coupling element 61' is uncoupled and can be extracted. The hollow 81 closes immediately because the closing element 71 of the membrane 70, shaped with the same contour as the hollow 81, slides into it.

[0069] Reference markings 100; 100'; 100'' closure unit 10 spout element 11 inlet pipe 12 spout rim 16 vent closure element 20; 20'; 20'' base element 21 bearing 22; 22'; 22'' spout rim 23'; 23'' female thread 24; 24'; 24'' pouring opening 25'' thread 30, 30'; 30'' cover 31 pivot pin 32'; 32'' sealing ring 33 bracket 34'' insert element 35'; 35'' male thread 36'' intermediate bottom 51 sealing element 52 spring element 55 neck seal 60; 60' removable accessory 61; 61' coupling element 62; 62' connecting trunnion 63; 63' support plate 64 retaining loop 64' retaining ring 65; 65' locking element 66; 66' recess 67 guide cam 70; 70'; 70'' membrane 71; 71'; 71'' closing element 72'' trunnion 74'' bead 80; 80'; 80'' securing zone 81; 81'; 81'' hollow 82; 82'; 82'' receiving support 83 guide slide 84 stop elements 200;200' gourd 201 thread 210 neck;

Claims

Lid unit for a flask (200; 200') comprising at least one closure unit (100; 100'; 100'') to be connected to the flask (200; 200'), with at least one spout element (10; 10'), which surrounds at least one pouring opening (24'; 24'') that can be closed, and with a lid (30; 30'; 30''), which in the closed state covers the pouring opening (24'; 24''), and a removable accessory (60; 60') having a coupling element (61; 61') capable of connecting to the lid (30; 30'; 30''), characterized in that: - the lid (30; 30'; 30'') has a fastening zone (80; 80'; 80'') for the attachment of the removable accessory (60; 60'), in which a wall of the cover is perforated with at least one recess (81; 81'; 81'') into which the coupling element (61; 61') of the removable accessory (60; 60') can be inserted, which can be connected to the cover (30; 30';30'') by cooperation of shapes following a rotational movement; and - an elastic membrane (70; 70'; 70''), which covers the hollow (81; 81'; 81''), is disposed below the hollow (81; 81'; 81''), in which the membrane (70; 70'; 70'') is designed such that when the coupling element (61; 61') is introduced into the hollow (81; 81'; 81''), it deflects by elastic deformation and after the implementation of the rotational movement applies itself against the coupled coupling element (61; 61'). Lid unit according to claim 1 characterized in that the lid (30; 30'; 30'') of the closing unit (100; 100'; 100'') has below the hollow (81; 81'; 81'') a receiving support (82; 82') in which the membrane (70; 70'; 70'') is held and in which the coupling element (61; 61') or parts thereof can be immobilized by cooperation of shapes as a result of the rotational movement. Lid unit according to claim 1 or 2 characterized in that the closing unit (100; 100'; 100'') comprises a closing element (71; 71'; 71''), which is connected to the elastic membrane (70; 70'; 70'') and which is placed inside the periphery of the hollow (81; 81'; 81''), as long as no coupling element (61; 61') is inserted into it. Lid unit according to claim 3, characterized in that the closing element (71; 71'; 71'') of the closing unit (100; 100'; 100'') is made in one piece jointly with the membrane (70; 70'; 70''). Lid unit according to any one of claims 1 to 4, characterized in that the membrane (70'') of the closure unit (100'') has on its lower face at least one deformable trunnion (72''), which is also formed of an elastomer and / or which is made in one piece with the membrane (70'') and with which the membrane (70'') rests on another fixed piece in the closure unit (100''). Lid unit according to any one of claims 1 to 4, characterized in that the membrane (70; 70'; 70'') of the closure unit (100; 100'; 100'') has in the area of ​​the outer edge on its lower face at least one edge bead extending downwards, which is also formed of an elastomer and with which the membrane (70; 70'; 70'') rests against another fixed part in the closure unit. Lid unit according to any one of the preceding claims, characterized in that the removable accessory (60; 60') can be coupled in the attachment zone (81; 81'; 81'') with the coupling element (61; 61'), which has a locking element (65; 65'), which can be guided through the hollow (81; 81'; 81'') and passes under the wall of the lid after a rotational movement. Lid unit according to claim 7, characterized in that - the hollow (81; 81'; 81'') and the locking element (65; 65') are respectively in the form of an oblong hole and - the receiving support (82; 82') has a guide slide (83) for the locking element (65; 65'), in which the locking element (65; 65') is guided so as to be able to be rotated to an angle of less than 360°. Lid unit according to claim 8, characterized in that - a closing element (71; 71'; 71'') also in the form of an oblong hole is connected to the membrane (70; 70'; 70'') or formed on it, - the guide slide (83) is made such that the locking element (65; 65') introduced through the hollow (81; 81'; 81'') can be rotated 90° into a final position; - in the final position the closing element (71; 71'; 71'') is arranged transversely with respect to the locking element (65; 65') and - the locking element (65; 65') has on its lower face a recess (66; 66') into which the closing element (71; 71'; 71'') engages in the final position. Lid unit according to any one of claims 7 to 9, characterized in that the accessory (60; 60') comprises a retaining loop (64) and / or a retaining ring (64'), which is connected to the coupling element (61; 61').

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