Sealed lid for a container and container with a container and a sealed lid

Abstract

The invention relates to a sealed lid (2) for use with a receptacle (1) comprising an upper edge (10) and a side wall (12) having an annular lower rim (14), the sealed lid (2) comprising an annular support element (20), a closure part (30) and an attachment member (40) connected to the closure part (30) by a first resilient hinge (50). According to the invention, the sealed lid (2) comprises a ring (60) configured to be mounted around the receptacle (1) coming to bear under the annular lower rim (14), the attachment member (40) being configured to engage with the ring (60) so that the annular support element (20) ensures a seal with the upper edge (10) when the ring (60) bears under the annular lower rim (14) and when the attachment member (40) engages with the ring (60).

Description

[0001] DESCRIPTION

[0002] TITLE: WATERTIGHT LID FOR CONTAINER, AND CONTAINER COMPRISING A CONTAINER AND A WATERTIGHT LID

[0003] The present invention relates to the technical field of containers comprising a receptacle and a lid.

[0004] The present invention relates more particularly to a waterproof lid intended for use with a container.

[0005] The present invention relates in particular, but not exclusively, to reusable containers intended to receive food preparations, such as for example yogurts.

[0006] Documents WO2011 / 144869 and WO2011 / 144870 disclose a container whose side wall has an outer bead in its upper part. This outer bead forms an excess thickness having a lower annular rim intended to suspend the container in an opening of suitable section. This outer bead has a slight slope, the container having an outer perimeter decreasing towards the base of the outer bead. This outer bead serves as a support wall for a lower peripheral collar of a lid configured to close the upper opening of the container. Such a container can be made of glass. A disadvantage of the aforementioned embodiment lies in the dimensional tolerances of the container which hinders the achievement of a satisfactory seal when the container is closed with the aforementioned lid.

[0007] Document CN 204184715 U discloses a container comprising a lid mounted hinged on a container with a hinge device comprising an upper element gripping the lid and a lower element gripping the container. The lower element and the upper element are mounted in grooves and are hinged relative to each other. A removable retaining device connecting the upper element to the lower element is arranged opposite the hinge. A disadvantage of the aforementioned embodiment lies in the manipulations necessary to close the lid on the container. The lid retaining device in fact comprises several movable elements which must be manipulated precisely to ensure a tight closure of the lid. Another disadvantage of the aforementioned embodiment lies in the manipulations necessary to separate the lid and the container.It is in fact necessary to dismantle the articulation device to be able to separate the lid from the container.

[0008] An object of the present invention is to provide a leak-proof lid for use with a container having a lower annular rim, which is simpler to remove and install.

[0009] Another object of the present invention is to provide a container comprising a sealed lid and a container having a lower annular rim, in which the sealed lid is easier to remove and install.

[0010] These objects are achieved with a sealed lid configured for use with a container having an upper edge and a side wall having a lower annular rim, the sealed lid comprising a closure piece carrying an annular bearing element configured to bear annularly on the upper edge, and a hooking member connected to the closure piece by a first elastic hinge, because the sealed lid comprises a ring configured to be mounted around the container to bear under the lower annular rim, and because the hooking member is configured to engage with the ring so that the annular bearing element ensures a seal with the upper edge when the ring bears under the lower annular rim and the hooking member is engaged with the ring.Thus, the attachment member of the sealed lid according to the invention engages with a portion of the sealed lid, and not with the container. Such an embodiment makes it possible to better overcome the dimensional tolerances of the container, in particular when the container is made of glass. Such an embodiment also makes it possible to better guarantee the attachment of the sealed lid. If desired, several first elastic hinges may be provided between the attachment member and the closure piece. The first elastic hinge, the attachment member and at least a portion of the closure piece may belong to a body made of plastic. The body may in particular be made of injected plastic. If desired, the body may be made of transparent or translucent material. Alternatively, the closure piece may include an insert. The body may then be overmolded onto the closure piece.

[0011] The annular support element may be formed by an annular seal configured to bear on the upper edge when the ring bears under the lower annular rim and the hooking member is engaged with the ring. Alternatively, the annular support element may in particular come from the body, and for example be formed by an annular lip engaged inside or outside the upper edge of the container.

[0012] The body may have a peripheral lower annular rib, the annular seal being mounted under the body inside the peripheral lower annular rib.

[0013] The body may have an inner lower annular rib, the annular seal being mounted under the body between the peripheral lower annular rib and the inner lower annular rib.

[0014] Alternatively, the annular seal can be overmolded onto the body.

[0015] The latching member may have a hook configured to engage a lower edge of the ring when the latching member is engaged with the ring.

[0016] The hook can then be engaged in a lower recess of the ring adjacent to the lower edge when the hooking member is engaged with the ring. This arrangement makes it possible to reinforce the ring.

[0017] The hooking member may then have a second hook configured to engage with a lower rib of the body when the hooking member is engaged with the ring. This arrangement makes it possible to improve the sealing of the container formed by the sealed lid closing the container.

[0018] According to one embodiment, the sealed cover may comprise a second elastic hinge connecting the closure piece to the ring. The second elastic hinge and the ring may belong to the body.

[0019] The first elastic hinge may be arranged opposite the second elastic hinge with respect to the closure piece.

[0020] The ring may have four sides, with the second elastic hinge connected to a first side.

[0021] The engaging member may then be configured to engage a second side opposite the first side.

[0022] The second elastic hinge may comprise a first elastic part connected to a second elastic part by an intermediate part that is more rigid than the first elastic part and the second elastic part. This arrangement makes it possible to provide the first elastic part at the upper edge of the container and to provide the second elastic part at the lower annular rim of the container. Thus, the height of the intermediate part of the second elastic hinge is close to the height of the lower annular rim of the container.

[0023] According to another embodiment, the sealed cover may comprise another hooking member connected to the closure piece by another first elastic hinge, the closure piece being arranged between the hooking member and the other hooking member, the other hooking member being configured to engage with the ring, so that the annular support element ensures a seal with the upper edge when the ring bears under the lower annular rim and the other hooking member is engaged with the ring.

[0024] The other first elastic hinge and the other hooking member may belong to the body.

[0025] If desired, the waterproof cover can have a second elastic hinge connecting the sealing piece to the ring.

[0026] Alternatively, the ring may be independent of the closure piece. Thus the ring may be independent of the body. The annular seal may be configured to bear on the upper edge when the ring bears under the lower annular rim and the latching member and the other latching member are engaged with the ring.

[0027] The other latching member may have a construction similar to that of the latching member. The other latching member may have another hook configured to engage the lower edge of the ring when the other latching member is engaged with the ring. The other hook may be engaged in another lower housing of the ring adjacent the lower edge when the other latching member is engaged with the ring. The other latching member may have another second hook configured to engage another lower rib of the body when the other latching member is engaged with the ring.

[0028] These objects are also achieved with a container comprising a receptacle and a sealed lid, in which the container has an upper edge and a side wall having a lower annular rim, because the sealed lid conforms to at least one of the aforementioned characteristics.

[0029] The container can be made of glass, which is particularly interesting for a reusable food container.

[0030] The invention will be better understood by studying two exemplary embodiments, taken without any limitation being implied, illustrated in the appended figures, in which:

[0031] [Fig 1] Figure 1 is a perspective view of an exemplary embodiment of a container comprising a sealed lid according to the invention mounted on a container and having an open position,

[0032] [Fig 2] Figure 2 is a perspective view of the container illustrated in Figure 1,

[0033] [Fig 3] Figure 3 is a perspective view of the sealed cover illustrated in Figure 1, shown in a flat configuration, showing the sealing face,

[0034] [Fig 4] Figure 4 is a top perspective view of the watertight cover illustrated in Figures 1 and 3, shown in a flat configuration, showing the face opposite the sealing face, [Fig 5] Figure 5 is a perspective view of a body of the watertight cover illustrated in Figures 1, 3 and 4, shown in a flat configuration, showing the sealing face,

[0035] [Fig 6] Figure 6 is a perspective view of an annular seal of the watertight cover illustrated in Figures 1, 3 and 4,

[0036] [Fig 7] Figure 7 is a perspective view of the sealed lid shown in Figures 1, 3 and 4, mounted on the container shown in Figures 1 and 2, and showing a closed position,

[0037] [Fig 8] Figure 8 is a sectional view of the sealing cover shown in Figures 1, 3, 4 and 7, mounted on the container shown in Figures 1, 2 and 7, and showing a closed position,

[0038] [Fig 9] Figure 9 is a perspective view of an exemplary embodiment of a container comprising a receptacle and a sealed lid according to the invention made in two parts,

[0039] [Fig 10] Figure 10 is a sectional view of the sealing lid shown in Figure 9 mounted on the container shown in Figure 9.

[0040] The container 3 illustrated in Figures 1, 7 and 8 comprises a receptacle 1 and a sealed lid 2. The container 1 is intended to contain food. The sealed lid 2 allows the container 1 to be closed. The container 3 can be used for transporting or storing the food contained in the container 1.

[0041] Container 1 can be used in particular for preparing yogurts. For this purpose, container 1 is advantageously made of glass.

[0042] As best seen in Figure 2, the container 1 has an upper edge 10 and a side wall 12 having a lower annular rim 14. The upper edge 10 is extended by an outer annular side edge 11. The container 1 has a side wall 12 and a bottom 13. The side wall 12 has a lower annular rim 14 arranged outside the container 1 under the outer annular side edge 11. The lower annular rim 14 may be provided to rest on a rim of an opening of a container support, in order to suspend the container 1 in said opening. The leak-proof lid 2 is configured to be used with the container 1 having the upper edge 10 and the side wall 12 having the lower annular rim 14, to form the container 3.

[0043] The container 1 and the sealed lid 2 illustrated in the figures have a square geometry. The side wall 12 has several faces 15 connected to each other by curved areas 16, and the lower annular rim 14 has several segments connected by rounded parts. Thus the side wall 12 and the lower annular rim 14 have non-circular geometries. Other polygonal geometries, for example hexagonal, or non-polygonal geometries, for example elliptical or circular, are however conceivable for the side wall 12 and the lower annular rim 14.

[0044] As better seen in Figures 3 and 4, the sealed cover 2 comprises an annular support element 20 configured to bear annularly on the upper edge 10 of the container 1. The sealed cover 2 comprises a closure piece 30 configured to close the upper opening of the container 1 in association with the annular support element 20. The sealed cover 2 comprises a hooking member 40 connected to the closure piece 30 by a first elastic hinge 50.

[0045] The sealed cover 2 comprises a ring 60 connected to the closure piece 30 by a second elastic hinge 70. The first elastic hinge 50 and the second elastic hinge 70 are arranged on either side of the closure piece 30. The ring 60 is configured to be mounted around the container 1 to come to bear under the lower annular rim 14. The hooking member 40 is configured to come into engagement with the ring 60 so that the annular support element 20 ensures a seal with the upper edge 10 when the ring 60 comes to bear under the lower annular rim 14 and the hooking member 40 is in engagement with the ring 60.

[0046] The sealed cover 2 is thus removable relative to the container 1, and may have a configuration in which the container 1 and the sealed cover 2 form a container closed in a sealed manner.

[0047] The materials used for the sealed cover 2 are chosen to allow the preservation of food, or even the freezing of food. In the embodiment illustrated in the figures, the ring 60, the first elastic hinge 50, the closure piece 30, the second elastic hinge 70 and the hooking member 40 belong to a body 80, illustrated in Figure 5. The body 80 is made of plastic. Food grade polypropylene resistant to the desired temperature variations can be considered in particular. If desired, the body 80 can be made of transparent or translucent material.

[0048] In the embodiment illustrated in the figures, the annular support element 20 is formed by an annular seal 21 configured to bear on the upper edge 10 when the ring 60 bears under the lower annular rim 14 and the hooking member 40 is engaged with the ring 60, as visible in FIG. 8.

[0049] As seen in Figure 3, the annular seal 21 has a first bearing face 22 having annular ribs 23. In the embodiment illustrated in Figure 3, the first bearing face 22 has three annular ribs 23. Preferably, the first bearing face 22 has between two and four annular ribs 23. The first bearing face 22 is configured to bear on the upper edge 10 when the ring 60 bears under the lower annular rim 14 and the hooking member 40 is engaged with the ring 60.

[0050] As best seen in Figure 5, the body 80 has a peripheral lower annular rib 81. The annular seal 21 is mounted under the body 80 inside the peripheral lower annular rib 81. If desired, the annular seal 21 can be removed for cleaning or replacement. The body 80 has an inner lower annular rib 82 surrounded by the peripheral lower annular rib 81. The peripheral lower annular rib 81 and the inner lower annular rib 82 form an annular groove 84. The annular seal 21 is mounted under the body 80 between the peripheral lower annular rib 81 and the inner lower annular rib 82. In other words, the annular seal 21 is mounted in the annular groove 84. This arrangement improves the seal between the upper edge 10 and the annular seal 21.As seen in Figure 6, the annular seal 21 has a second bearing face 24 opposite the first bearing face 22. The second bearing face 24 has annular ribs 25. In the embodiment illustrated in Figure 6, the second bearing face 24 has three annular ribs 25. Preferably, the second bearing face 24 has between two and four annular ribs 25. The second bearing face 24 is configured to be mounted between the peripheral lower annular rib 81 and the inner lower annular rib 82.

[0051] As seen in Figures 1, 3, 4, 5, 7 and 8, the first elastic hinge 50 is arranged opposite the second elastic hinge 70 relative to the closure piece 30.

[0052] As best seen in Figures 3, 4 and 5, the ring 60 has four sides 61, 62, 63, 64. The second elastic hinge 70 is connected to a first side 61. The hooking member 40 is configured to engage with a second side 62 opposite the first side 61. A third side 63 and a fourth side 64 extend between the first side 61 and the second side 62.

[0053] As better seen in Figures 3, 5, 7 and 8, the second elastic hinge 70 comprises a first elastic part 71 connected to a second elastic part 72 by an intermediate part 73 which is more rigid than the first elastic part 71 and more rigid than the second elastic part 72. The first elastic part 71 is connected to the ring 60. The second elastic part 72 is connected to the closure piece 30.

[0054] In the embodiment illustrated in the figures, the attachment member 40 has several attachment elements. As best seen in Figures 3, 4, 5, 7 and 8, the hooking member 40 has a hook 41 and a second hook 42. As best seen in Figure 8, the hook 41 is configured to engage a lower edge 65 of the ring 60 when the hooking member 40 is engaged with the ring 60. The hook 41 is engaged in a lower housing 66 of the ring 60 adjacent to the lower edge 65 when the hooking member 40 is engaged with the ring 60. The second hook 42 is configured to engage a lower rib 83 of the body 80 when the hooking member 40 is engaged with the ring 60. In the embodiment illustrated in the figures, the lower rib 83 is formed by a portion of the peripheral lower annular rib 81.If desired, the lower rib 83 may be distinct from the peripheral lower annular rib 81, or the body 80 may be devoid of a peripheral lower annular rib 81. In the embodiment illustrated in the figures, the hook 41 is larger than the second hook 42.

[0055] The sealed cover 2 and the container 3 illustrated in Figures 1 to 8 are used in the following manner.

[0056] The user can store the waterproof cover 2 flat, as shown in Figures 3 and 4.

[0057] To close the container 3, the user positions the ring 60 under the lower annular rim 14 of the container 1. The user then pivots the closure piece 30 according to the second elastic hinge 70 so that the annular support element 20 comes to bear annularly on the upper edge 10 of the container 1, and also pivots the hooking member 40 according to the first elastic hinge 50 so that the hooking member 40 engages with the ring 60. The hook 41 is then engaged in the lower housing 66, and the second hook 42 then engages with the lower rib 83 of the body 80 formed by a portion of the peripheral lower annular rib 81. The container 3 is then closed in a sealed manner and can be used for transport or storage.

[0058] To open the container 3, the user releases the hooking member 40 from the ring 60 by pivoting it according to the first elastic hinge 50, then releases the annular support element 20 from the upper edge 10 of the container 1 by pivoting the closure piece 30 according to the second elastic hinge 70. The user can then remove the ring 60 from the container 1.

[0059] The proposed construction makes it possible to obtain a resealable container 3 using a container 1 having undemanding dimensional tolerances, such as for example a glass container 1. The attachment of the attachment member 40 to the ring 60 makes it possible to achieve a tight closure of the container 3 by compressing the annular support element 20 of the tight lid 2 against the upper edge 10 of the container 1. The sealed lid 2' illustrated in Figures 9 and 10 is also configured to be used with the container 1 having the upper edge 10 and the side wall 12 having a lower annular rim 14. Like the sealed lid 2, the sealed lid 2' comprises an annular support element 20 configured to bear annularly on the upper edge 10, a closure piece 30', and a hooking member 40 connected to the closure piece 30' by a first elastic hinge 50.The watertight cover 2' comprises a body 80' made of plastic, comprising the closure part 30', the first elastic hinge 50 and the hooking member 40.

[0060] The sealed lid 2' comprises a ring 60' configured to be mounted around the container 1 to come to bear under the lower annular rim 14. The hooking member 40 is configured to come into engagement with the ring 60' so that the annular support element 20 ensures a seal with the upper edge 10 when the ring 60' comes to bear under the lower annular rim 14 and the hooking member 40 is in engagement with the ring 60', as shown in FIG. 10.

[0061] The sealed cover 2' illustrated in Figures 9 and 10 differs from the sealed cover 2 illustrated in Figures 1 and 3 to 8 in that it comprises another hooking member 40' connected to the closure piece 30' by another first elastic hinge 50', and in that it does not comprise a second elastic hinge connecting the ring 60' to the closure piece 30'. Thus the ring 60' is independent of the closure piece 30'. The other hooking member 40' may be identical to the hooking member 40.

[0062] The ring 60', the closure piece 30, the first elastic hinge 50, the hooking member 40, the other first elastic hinge 50' and the other hooking member 40' belong to the body 80'. The ring 60' is independent of the body 80'.

[0063] As best seen in Figure 10, the closure part 30' is arranged between the hooking member 40 and the other hooking member 40'. The other hooking member 40' is configured to engage with the ring 60', so that the annular support element 20 ensures a seal with the upper edge 10 when the ring 60' bears under the lower annular rim 14 and the other hooking member 40' is engaged with the ring 60'.

[0064] The annular seal 21 is configured to bear on the upper edge 10 when the ring 60' bears under the lower annular rim 14 and the hooking member 40 and the other hooking member 40' are engaged with the ring 60'.

[0065] The other hooking member 40' has another 4 T hook configured to engage a lower edge of the ring 60' when the other hooking member 40' is engaged with the ring 60'. The other 4 T hook is engaged in another lower housing 66' of the ring 60' adjacent the lower edge when the other hooking member 40' is engaged with the ring 60'. The other hooking member 40' has another second hook 42' configured to engage another lower rib of the body 80' when the other hooking member 40' is engaged with the ring 60'.

[0066] As best seen in Figure 9, the ring 60' has four sides 61, 62, 63, 64. If desired, the four sides 61, 62, 63, 64 can be identical. The hooking member 40 is configured to engage one of the sides 61, 62, 63, 64. The other hooking member 40' is configured to engage another of the sides 61, 62, 63, 64 opposite the aforementioned side.

[0067] If desired, the waterproof cover 2' may include a second elastic hinge connecting the closure piece 30 to the ring 60'.

[0068] The waterproof cover 2' and the container 3' illustrated in figures 9 and 10 are used in the following manner.

[0069] The user mounts the ring 60' under the lower annular rim 14 of the container 1. If desired, the user can permanently mount the ring 60' on the container 1. In other words, the ring 60' can be configured to be lightly force-mounted around the side wall 12 of the container 1 under the lower annular rim 14.

[0070] To close the container 3', the user positions the body 80' on the container 1 so that the annular support element 20 comes to bear annularly on the upper edge 10 of the container 1. The user then pivots the hooking member 40 according to the first elastic hinge 50 so that the hooking member 40 engages with the ring 60', and then pivots the other hooking member 40' according to the other first elastic hinge 50' so that the other hooking member 40' engages with the ring 60'.

[0071] The hook 41 and the other hook 4 T are then engaged respectively in the lower housing 66 and in the other lower housing 66'. The second hook 42 and the other second hook 42' then engage with the lower rib 83' of the body 80'. The container 3 is then sealed and can be used for transport or storage.

[0072] To open the container 3, the user releases the hooking member 40 from the ring 60' by pivoting it according to the first elastic hinge 50, then the other hooking member 40' from the ring 60' by pivoting it according to the other first elastic hinge 50. The user can then lift the annular support element 20 from the upper edge 10 of the container 1.

[0073] The proposed construction also makes it possible to obtain a resealable container 3' using a container 1 having undemanding dimensional tolerances, such as for example a glass container 1. The attachment of the attachment member 40 and the other attachment member 40' to the ring 60' makes it possible to achieve a tight closure of the container 3 by compressing the annular support element 20 of the tight lid 2' against the upper edge 10 of the container 1.

[0074] As a variant, at least a portion of the closure piece 30; 30' may belong to the body 80; 80' made of plastic material forming the first elastic hinge 50 as well as the other first elastic hinge 50' and / or the second elastic hinge 70. The closure piece 30, 30' may comprise an insert, in particular an insert made of transparent or translucent material, for example a glass insert. The body 80; 80' may then be overmolded onto the insert.

[0075] As a variant, the sealed cover 2; 2' does not necessarily comprise an annular support element 20 formed by an annular seal 21 mounted in a lower peripheral annular rib 81 of the body 80; 80'. According to an alternative embodiment, not illustrated in the figures, an annular seal could in particular be overmolded onto the body 80; 80'. According to another alternative embodiment, not illustrated in the figures, the annular support element 20 could come from the body 80; 80', for example by being formed by an annular lip engaged inside or outside the upper edge 10 of the container 1.

[0076] The present invention is in no way limited to the described embodiments and their variants, but encompasses numerous modifications within the scope of the claims.

Claims

DEMANDS 1. A watertight lid (2; 2') configured for use with a container (1) having an upper edge (10) and a side wall (12) having a lower annular rim (14), the watertight lid (2; 2') having a sealing piece (30; 30') carrying an annular support element (20) configured to bear annularly on the upper edge (10), and a latching member (40) connected to the sealing piece (30; 30') by a first elastic hinge (50), characterized in that the watertight lid (2; 2') has a ring (60, 60') configured to be mounted around the container (1) to bear under the lower annular rim (14), and in that the latching member (40) is configured to engage with the ring (60; 60') so that the annular support element (20) ensures a seal with the upper edge (10) when the ring (60;60') rests under the lower annular rim (14) and the hooking member (40) is engaged with the ring (60; 60').; 2 Watertight cover (2; 2') according to claim 1, characterized in that the first elastic hinge (50), the hooking member (40) and at least a part of the sealing piece (30; 30') belong to a body (80; 80') made of plastic material. 3 Watertight cover (2; 2') according to one of claims 1 or 2, characterized in that the annular support element (20) is formed by an annular seal (21) configured to bear against the upper edge (10) when the ring (60; 60') bears against the lower annular rim (14) and the hooking member (40) is engaged with the ring (60; 60').

4. Watertight cover (2; 2') according to claim 2 and claim 3, characterized in that the body (80; 80') has a lower peripheral annular rib (81) and in that the annular seal (21) is mounted under the body (80; 80') inside the lower peripheral annular rib (81). 5 Watertight cover (2; 2') according to claim 4, characterized in that the body (80; 80') has an inner lower annular rib (82) and in that the annular seal (21) is mounted under the body (80; 80') between the peripheral lower annular rib (81) and the inner lower annular rib (82). 6 Watertight cover (2; 2') according to any one of claims 1 to 5, characterized in that the hooking member (40) has a hook (41) configured to engage with a lower edge (65) of the ring (60; 60') when the hooking member (40) is engaged with the ring (60; 60'). 7 Watertight cover (2; 2') according to claim 6, characterized in that the hook (41) is engaged in a lower housing (66) of the ring (60) adjacent to the lower edge (65) when the hooking member (40) is engaged with the ring (60). 8 Watertight cover (2; 2') according to any one of claims 2, 4, 5, or 3, 6 when dependent on any one of claims 2, 4 or 5, characterized in that the hooking member (40) has a second hook (42) configured to engage with a lower rib (83) of the body (80; 80') when the hooking member (40) is engaged with the ring (60; 60'). 9 Watertight cover (2) according to any one of claims 1 to 8, characterized in that it comprises a second elastic hinge (70) connecting the sealing piece (30) to the ring (60). 10 Watertight cover (2) according to claim 2 and claim 9, characterized in that the second elastic hinge (70) and the ring (60) belong to the body (80). 11 Watertight cover (2) according to one of claims 9 or 10, characterized in that the first elastic hinge (50) is arranged opposite the second elastic hinge (70) with respect to the sealing piece (30). 17 12 Watertight cover (2) according to any one of claims 9 to 11, characterized in that the ring (60) has four sides (61, 62, 63, 64) and in that the second elastic hinge (70) is connected to a first side (61). 13 Watertight cover (2) according to claim 12, characterized in that the hooking member (40) is configured to engage with a second side (62) opposite to the first side (61). 14 Watertight cover (2) according to any one of claims 9 to 13, characterized in that the second elastic hinge (70) comprises a first elastic part (71) connected to a second elastic part (72) by an intermediate part (73) which is more rigid than the first elastic part (71) and the second elastic part (72). 15 Watertight cover (2') according to any one of claims 1 to 14, characterized in that it comprises another hooking member (40') connected to the sealing piece (30') by another first elastic hinge (50'), in that the sealing piece (30') is arranged between the hooking member (40) and the other hooking member (40'), and in that the other hooking member (40') is configured to engage with the ring (60'), so that the annular support element (20) ensures a seal with the upper edge (10) when the ring (60') rests under the lower annular rim (14) and the other hooking member (40') is engaged with the ring (60'). 16 Watertight cover (2') according to claim 2 and claim 15, characterized in that the other first elastic hinge (50') and the other hooking member (40') belong to the body (80'). 17 Watertight cover (2') according to claim 16, characterized in that the ring (60') is independent of the sealing piece (30'). 18 Watertight cover (2') according to claims 15 to 17, characterized in that the ring (60') is independent of the body (80'). 19 Container (3; 3') comprising a receptacle (1) and a leak-proof lid (2; 2'), wherein the receptacle (1) has an upper rim (10) and 18 a side wall (12) having a lower annular rim (14), characterized in that the airtight lid (2; 2') conforms to any one of claims 1 to 18. Container (3; 3') according to claim 19, characterized in that the container (1) is made of glass.