Cosmetic bottle with non-cylindrical neck
The cosmetic pot design addresses the complexity of non-cylindrical necks by using a non-circular neck with a bead rim and complementary assembly members on the lid, allowing for simple and effective opening and closing while maintaining proper sealing.
Patent Information
- Application Number
- JP2022549864
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-02-21
- Filing Date
- 2021-02-17
- Publication Date
- 2025-04-28
- Estimated Expiration
- 2041-02-17
AI Technical Summary
Existing cosmetic pots with non-cylindrical necks require complex mechanisms for opening and closing, making them difficult to operate simply and naturally.
A cosmetic pot design featuring a non-circular neck with a rim forming a bead, and a lid with complementary assembly members that mate via insertion, allowing for easy opening and closing by rotation while preventing excessive tightening or insufficient sealing.
The design enables easy and intuitive opening and closing of the pot, similar to conventional cylindrical-neck pots, while ensuring proper sealing and preventing wear on the pot and seal.
Smart Images

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Abstract
Description
[Technical field]
[0001] The present invention relates to the field of pots, in particular those for cosmetics. By cosmetics is meant in particular all products intended to make up the skin, including the lips, and all compositions intended for application to the body, including what are called care products, such as moisturizing creams, cleansing products or products intended to protect the skin from the sun. [Background technology]
[0002] A cosmetic pot generally comprises a base forming a reservoir adapted to contain the cosmetic product, covered by a neck defining an opening, the base being closed by a lid.
[0003] In known manner, the neck is substantially cylindrical, in other words the cross section of the neck is circular or the opening defined by the neck is circular. The cylindrical shape of the neck allows easy closing and opening of the pot, in particular by screwing the lid on and off the base. To that end, the neck is generally provided with a screw thread or with a screw ramp.
[0004] However, it may be desirable to produce necks of different shapes. In this context, pots are known that have a neck of non-circular cross section, in particular a square cross section that defines a square opening. To allow the closing and opening of such pots, some solutions of the prior art provide a hinge system that connects the base to the lid. Other alternative closing and opening systems exist, such as those described in document FR 1 551 009, which consist of adding mechanisms that are complex and difficult to implement. [Prior art documents] [Patent documents]
[0005] [Patent Document 1] French Patent No. 1551009 Summary of the Invention [Problem to be solved by the invention]
[0006] Thus, existing solutions for non-cylindrical necks have the disadvantage of being complex and / or requiring conventional operating modes for closing and opening by rotating the lid on the base of the pot. [Means for solving the problem]
[0007] The present invention aims to solve at least one of the above-mentioned drawbacks, in particular to provide a cosmetic pot having a non-cylindrical neck that allows easy opening and closing while maintaining a simple and natural operating form.
[0008] The present invention relates to a cosmetic pot comprising a base covered by a neck defining an opening and a lid configured to close said opening, said neck having a non-circular cross-section, said neck comprising a rim forming a bead covering the periphery of the neck.
[0009] According to the invention, the neck portion comprises at least one first assembly member formed on an outer wall surface of the neck below the rim, the lid comprises a contoured wall surface configured to surround the neck portion when the lid is positioned on the neck portion in an open position or in a closed position in which the lid closes the opening, the lid comprises at least one second assembly member formed on the contoured wall surface and having a shape complementary to the at least one first assembly member, allowing mating via insertion of the at least one first assembly member and the at least one second assembly member together, The lid is constructed as follows: when the lid is in a closed position, the at least one second assembly member of the lid is disposed under a rim of the neck to prevent vertical withdrawal of the lid relative to the neck; the at least one second assembly member and the at least one first assembly member are interfitted with each other by insertion to provide resistance to rotation of the lid and neck; when the lid is in an open position, the at least one second assembly member disengages from the at least one first assembly member and the rim of the neck to allow vertical removal of the lid relative to the neck; The lid is configured to pass from an open position to a closed position, and vice versa, by rotation of the lid about the neck.
[0010] Such pots, having a non-cylindrical neck, can be opened and closed in the same way as conventional pots, having a cylindrical neck, the lid of which is screwed onto the base, i.e., rotated, for example, counterclockwise to open the pot and clockwise to close it.
[0011] Furthermore, by stopping the rotation by mating the first and second assembly members together via the insert, the user knows when the lid is properly closed or tightened on the base, which avoids over-tightening that could result in wear on the pot, especially crushing of the seal located between the lid and the base, and avoids under-tightening of the lid on the pot, which ensures a proper seal of the pot.
[0012] According to a feature, the contoured wall of the lid defines a cavity within the lid, the cross-section of which corresponds to a superposition of a cross-section of the neck portion in a first position and a superposition of a cross-section of the neck portion in a second position rotated through a predetermined angle relative to the first position.
[0013] The lid therefore includes a cavity dimensioned to be able to closely conform to the shape of the neck.
[0014] According to a feature, the predetermined angle is less than 45°, strictly greater than 0° and preferably equal to 22°.
[0015] According to a feature, the neck has a polygonal shape with rounded corners and / or sides or a prismatic cross section with a polygonal base.
[0016] According to a feature, the neck has a square cross section or a square cross section with rounded corners and / or sides.
[0017] According to one feature, the at least one first assembly member is formed at one or more corners of a cross-section of the neck.
[0018] This makes it easy to identify the position of the at least one first assembly member for closing and opening the pot.
[0019] According to a feature, the neck portion comprises a number of first assembly members equal to the number of sides of said polygon.
[0020] According to a feature, the neck has an elliptical cross section.
[0021] According to a feature, the lid comprises a number of second assembly members equal to the number of first assembly members of the neck portion.
[0022] According to a feature, the at least one first assembly member comprises a protrusion in relief of the outer wall surface of the neck portion and the at least one second assembly member comprises a correspondingly shaped recess, or vice versa.
[0023] According to a feature, the at least one first assembly member comprises a notch formed in a neck portion and the at least one second assembly member comprises a correspondingly shaped lug, or vice versa.
[0024] According to one feature, the at least one first assembly member includes a rotational stop shaped to stop the at least one second assembly member.
[0025] In particular, the detent can stop rotation of the lid about the neck as the lid passes from the open position to the closed position.
[0026] According to one characteristic, said at least one second assembly member and / or said at least one first assembly member are elastic.
[0027] According to one feature, the lid includes a notch that increases the elasticity of the second assembly member.
[0028] Further particularities and advantages of the invention will appear in the following description, with reference to the accompanying drawings, given as non-limiting examples: [Brief description of the drawings]
[0029] [Figure 1] FIG. 1 is a perspective view of a cosmetic pot according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded view of FIG. [Diagram 3] FIG. 3 is a perspective view of the base of the pot of FIG. 1 from a first viewing angle. [Figure 4] FIG. 4 is a perspective view of the base of the pot from a second viewing angle. [Diagram 5] FIG. 5 is a perspective view of the lid of the pot of FIG. [Figure 6] FIG. 6 is a view from under the lid of FIG. 5. [Figure 7] FIG. 7 is a cross-sectional view of the pot of FIG. 1 with the lid in the open position. [Figure 8] FIG. 2 is a cross-sectional view of the pot of FIG. 1 with the lid in a closed position, taken along said transverse plane. [Figure 9] FIG. 2 is a cross-sectional view on a vertical plane of the pot of FIG. 1 in a closed position.
[0030] 1 and 2 show a pot 1 according to one embodiment.
[0031] In the exemplary embodiment shown, the pot 1 is a container configured to contain a product directly accessible to the user and in which the product is provided to be taken, for example, by the fingers or by a spatula. Nevertheless, the pot according to the invention can be any type of container or vessel. As a non-limiting example, the pot may be a vessel provided with a pump or a pipette making it possible to take the product contained in the vessel.
[0032] The pot 1 comprises a base 2 and a lid 3 that allows the pot 1 to be opened and closed. In this example, the pot 1 also comprises a seal 4 arranged between the base 2 and the lid 3.
[0033] The pot shown in these figures is a pot with a square outline. By "square outline" is meant a pot with a base having an approximately parallelepiped shape with a square base, this does not exclude pots with a bulging outline or any other slight modification to its general shape. Furthermore, this specification is drawn up for a pot 1 with a square outline, but is valid mutatis mutandis for any pot, regardless of the external general shape of the base.
[0034] In this specification, by transverse plane we mean a plane parallel to the bottom of the base of the pot, and by vertical plane we mean a plane perpendicular to the transverse plane.
[0035] The pot 1 is here formed symmetrically with respect to a vertical plane.
[0036] The base 2 is shown, for example, in Figures 3 and 4, separately from two different viewing angles. The base 2 comprises a container 200 and a neck 201 covering the container 200. The neck 201 defines an opening 202 allowing access to the product contained in the container 200. The dimensions of the neck 201 and the opening 202 are close to the cross-sectional dimensions of the base 2. In any case, in the example shown here, the opening 202 of the pot 1 is wide enough to allow the passage of at least one finger of one hand, i.e. in cross-section, it has a transverse dimension of about 25 millimeters or more.
[0037] The neck portion 201 includes an outer wall surface 203 and a rim 204 formed on the outer wall surface 203. The rim 204 forms a bead around the neck portion 201.
[0038] The outer wall surface 203 is here generally convex in the portion located under the rim 204. This allows for an easy rotational movement of the lid 3 on the neck 201.
[0039] Preferably, the top of the rim 204 is rounded or beveled to create a ramp effect with the seal 4 when the seal 4 is moved perpendicular to the neck.
[0040] The neck 201 has a non-circular (transverse) cross section. In this exemplary embodiment, the neck 201 has a substantially square cross section. The neck 21 here has a cross section of substantially similar shape to the contour of the base. More specifically, the neck 201 comprises four identical parts, i.e. parts of the same shape and dimensions, which together form the sides of a parallelepiped whose base is substantially square. The intersections between the parts have rounded corners. The rounded corners facilitate the rotation of the lid around the base.
[0041] Of course, the invention also applies to other neck shapes. In particular, the invention applies to any pot with a neck of non-circular cross section. By way of example, the neck may have a substantially polygonal or substantially elliptical cross section. In other words, the neck may have a prismatic prism shape, the base of which is polygonal, or for example a cylindrical shape, the base of which is non-circular, for example an ellipse.
[0042] The neck portion 201 comprises at least one first assembly member 205. The at least one first assembly member 205 is formed on the outer wall surface 203. The at least one first assembly member 205 is here formed below the rim 204.
[0043] In the illustrated example, the neck 201 comprises four first assembly members 205. "First assembly members" is used to generally refer to the parts of the neck 201 that are configured to cooperate with second assembly members carried by the lid 3. The cooperation between the first and second assembly members provides or participates in the closure of the pot, as described below. The first assembly members 205 are advantageously formed at the corner positions of the neck 201. This makes it easy to identify their position.
[0044] Of course, the number and location of the first assembly members 205 may vary.
[0045] Here, only one of the first assembly members 205 will be described since they are all identical.
[0046] The first assembly member 205 includes a stop 206 which is a rotational stop that allows rotation of the lid 3 about the neck 201 to be stopped as the lid 3 passes from the open position to the closed position.
[0047] The stop 206 is formed, for example here, by a shoulder provided in the outer wall surface 203 of the neck 201. More specifically, a notch 207 is provided in the outer wall surface 203, so that the neck 201 has a locally reduced thickness. The face of the neck 201 tangential to the notch 207 then forms a shoulder or stop 206l.
[0048] Here, the first assembly member 205 of the neck 201 also comprises a protrusion 208. The protrusion 208 is in relief with respect to the outer wall surface 203 of the neck 201. The protrusion 208 here has a semi-cylindrical shape. The protrusion 208 is tangential to the notch 207.
[0049] The base 2 is formed from any suitable material, in particular a glass or plastic material. It may be transparent or opaque. The base 2 may be adapted to receive a supplementary tab or refill containing the cosmetic product.
[0050] The lid 3 is shown separately in Figures 5 and 6. The lid comprises an upper surface 300, a lower wall surface 301 behind the upper surface 300, and a contoured wall surface 302.
[0051] Here, the reference 3 has a square outline, i.e. the upper surface 300 has a square shape. Advantageously, the lid 3 has substantially (or exactly) the same outline dimensions and shape as the base 2.
[0052] The top surface 300 here constitutes the outer surface provided to be visible to the user, for example when the pot 1 is closed with the lid 3 .
[0053] The lid 3 comprises a cavity 303 provided in the lower wall 301. The cavity 303 forms an inner part of the lid 3 which is invisible to the user when the lid 3 closes the opening 202.
[0054] Contoured wall 302 includes an outer contoured surface 302a and an inner contoured surface 302b.
[0055] The outer contoured surface 302a extends around the periphery of the top surface 300. In other words, the outer contoured surface 302a borders the edge of the top surface 300. The outer contoured surface 302a is visible to a user when the lid 3 closes the opening 202.
[0056] The inner contoured surface 302b defines a perimeter of the cavity 303. The inner contoured surface 302b extends into an inner portion of the lid 3. In this way, when the lid 3 closes the opening 202, the inner contoured surface 302b is not visible to a user.
[0057] The inner contoured surface 302b has rounded corners that are complementary to the rounded corners of the neck portion 201.
[0058] The lid 3 comprises at least one second assembly member 304 of a shape complementary to the first assembly member 205 of the neck 201. In the illustrated example, the lid 3 comprises four second assembly members 304. Each second assembly member 304 of the lid 3 has a corresponding first assembly member 205 of the neck 201 configured to cooperate therewith.
[0059] In the illustrated example, four second assembly members 304 are formed at the rounded corners of the contoured wall 302 .
[0060] Of course, the number and location of the second assembly members may vary.
[0061] Here, since the second assembly members 304 are all identical, a description is given for only one of them, but of course applies to all the others.
[0062] The second assembly member 304 is formed within the contoured wall surface 302. The second assembly member 304 extends to an inner portion of the lid 3 so as not to be visible to a user when the lid closes the opening 202. This can improve the aesthetics of the pot 1.
[0063] The second assembly member 304 here comprises a protrusion or lug 305 and a recess 306. The lug 305 and the recess 306 are adjacent to each other. The lug 305 has a shape complementary to the notch 207 formed in the neck portion 201. The recess 306 also has a shape complementary to the protrusion 208. The lug 305 of the second assembly member 304 is configured to insert into the notch 207 of the first assembly member 205 between the stop 206 and the protrusion 208. The recess 306 of the second assembly member 304 is configured to receive the protrusion 208 of the first assembly member 205.
[0064] Here, the second assembly member 304 has a height that is at most equal to the height of the first assembly member 205 of the neck 201. Preferably, the second assembly member 304 has a height that is less, or perceptibly less, than the height of the first assembly member 205 of the neck 201.
[0065] By height is meant the vertical dimension. The height of the neck 201 corresponds to the sum of the height of the rim 204 and the height of the first assembly member 205 taken in the same vertical plane.
[0066] In the illustrated example, the respective heights of the rim and the first assembly member are not the same everywhere. The neck 201 has at least one slope or incline formed in the edge between the rim 204 and the first assembly member 205. Here, each portion of the neck 201 is inclined.
[0067] The second assembly member 304 is advantageously made from an elastic material. For example, the flexibility of the material that constitutes the lid 3 (generally made from a plastic material) may be utilized by the second assembly member. This allows a simple engagement between the first assembly member 205 and the second assembly member 304 through insertion.
[0068] 6, the second assembly member includes a cleft 307 formed in the contoured wall 302. The cleft provides the second assembly member 304 with more flexibility, thereby making it easier to insertably mate with the first assembly member 205.
[0069] According to one embodiment, the lid 3 may be made entirely from an elastic material. The lid 3 can be manufactured by moulding or injection to give it the desired shape.
[0070] Generally speaking, at least one of the first assembly member and the second assembly member is flexible and resilient, thereby enabling said assembly members to be mated with one another by insertion.
[0071] The inner contour surface 302b has a shape and dimensions that enable it to surround the neck 201 so as to close the opening 202. In other words, the cross section of the cavity 303 is at least as large as the cross section of the neck 201 of the base 2 so that the lid 3 can surround and rotate around the neck 201.
[0072] The lid 3 is configured to have an open position and a closed position in which the lid 3 closes the opening 202. When the lid 3 is in the open or closed position, the contoured wall surface 302, particularly the inner contoured surface 302b, surrounds the neck 201.
[0073] The open position of the lid 3 corresponds to a position in which the second assembly part 304 is spaced apart from the first assembly part 205 and the rim 204 of the neck 201 . In this position, the lid is free to rotate and be pulled out vertically relative to the neck 201. The closed position of the lid 3 corresponds to a position in which the second assembly member 304 is disposed under the rim 204 of the neck 201. In this position, rotation of the lid is stopped by cooperation of the assembly members (unless sufficient force is applied to the lid to overcome the resistance offered by mating of the assembly members by insertion), and vertical withdrawal of the lid 3 relative to the neck 201 is prevented by interaction between the first assembly member and the bead 204, which will be described in more detail below.
[0074] Figure 7 shows the lid 3 placed around the neck 201 in the open position. Figures 8 and 9 show the lid placed around the neck 201 in the closed position.
[0075] Advantageously, the cross-section of cavity 303 corresponds to a superposition of one of the cross-sections of neck 201 in a first position with the cross-section of neck 201 in a second position rotated by a predetermined angle relative to the first position. In other words, the cross-section of cavity 303 corresponds to a superposition of the cross-section of neck 201 and its image obtained by rotation around the center (or center of gravity) of said cross-section through a predetermined angle.
[0076] The predetermined angle constitutes the angle through which the lid 3 passes when passing from the extreme open position to the closed position or vice versa.
[0077] The predetermined angle may be less than 45°. In a preferred embodiment, the predetermined angle is on the order of 22°.
[0078] Thus, the cavity 303 is formed when the lid 3 comprises a number of second assembly members 304 equal to the number of first assembly members 205 of the neck portion 201 .
[0079] In another embodiment, the lid 3 may include a fewer number of second assembly members 304 than the number of first assembly members 205 of the neck 201. In the example of a neck 201 having a generally square cross-section and having four first assembly members 205, the lid 3 may include a single, two, or three second assembly members 304.
[0080] Of course, the reverse is also perfectly well envisaged: the lid 3 may comprise a greater number of second assembly parts 304 than the number of first assembly parts 205 of the neck 201 .
[0081] In any case, the cavity 303 has a cross-section that allows the lid 3 to surround the neck 201 when it closes the opening 202, in particular in the open and closed positions. Furthermore, the cavity 303 has a cross-section that allows the lid 3 to be pulled vertically out of and around the neck 201 when the lid 3 is in the open position, and that generates resistance to rotation of the lid 3 relative to the neck 201, preventing vertical pulling of the lid 3 relative to the neck 201, when the lid 3 is in the closed position.
[0082] When the user wants to close the pot 1, he positions the lid 3 in the open position, as in Figure 7. In this position, the lid 3 is turned through a predefined angle relative to the neck 201. The rounded corners of the lid 3 now face opposite the rounded corners of the neck 201.
[0083] To close the pot 1, the user turns the lid 3, for example clockwise. The lid 3 rotates around the neck 201 until the first assembly member 205 of the neck 201 and the second assembly member 304 of the lid 3 cooperate. In other words, the lid 3 rotates around the neck 201 until the second assembly member 304 abuts against the stop 206 of the neck 201. The stop 206 thus forms a rotation stop for the lid 3. In the described example, when the lid 3 is in the closed position, the lug 305 is inserted into the notch 207 of the neck 201 and the projection 208 is inserted into the recess 305. In this position, the second assembly member 304 extends below the rim 204. The lid 3 is then stopped vertically by the bead 204. In other words, the lid 3 cannot be pulled out vertically relative to the neck 201.
[0084] To open the pot 1, the user turns the lid 3 in the opposite direction to the closing direction, for example counterclockwise. The user overcomes the resistance caused by the cooperation between the first and second assembly parts. The second assembly part 304 of the lid 3 is separated from the first assembly part 204 of the neck 304. The second assembly part 304 of the lid 3 then leaves the stop 206 of the neck 201. The lug 305 is separated from the notch 207. The projection 208 is also clear from the recess 205. Free rotation of the lid 3 relative to the base 2 is then possible again. The second assembly part 304 of the lid 3 is also separated from the rim 204 of the neck 201. The lid 3 can then be pulled out perpendicularly to the neck 201, since it is no longer stopped by the bead 204.
[0085] Of course, the invention is not limited to the embodiments described and illustrated.
[0086] The invention makes it possible to maintain forms of operation for screwing onto a neck that would not be expected to allow this due to their geometric shape, such as squares, other polygonal forms, and more generally many forms that are not circular.
[0087] Such a lid 3 can be easily adapted to any base 2 configured to contain a cosmetic product, comprising at least one first assembly member 205 and a neck portion 201 having a rim 204. Only the lid 3 is modified to allow opening and closing of the pot with a simple and intuitive mode of operation.
Claims
1. A cosmetic pot comprising a base (2) covered by a neck portion (201) defining an opening (202) and a lid (3) configured to close said opening (202), said neck portion (201) having a non-circular cross-section, said neck portion (201) comprising a rim (204) forming a bead around the circumference of said neck portion (201), said neck portion (201) comprising at least one first assembly member (205) formed on an outer wall surface (203) of said neck portion (201) below said rim (204), and said lid (3) comprising: a contoured wall (302) configured to surround the neck portion (201) when the lid (3) is positioned on the neck portion (201) in an open position or in a closed position closing the opening (202), the lid (3) having at least one second assembly member formed on the contoured wall (302) and having a shape complementary to the at least one first assembly member (205), the at least one first assembly member (205) being capable of mating together with the at least one second assembly member (304) by insertion; When the lid (3) is in the closed position, - said at least one second assembly member (304) of the lid (3) is located under the rim (204) of the neck (201) to prevent vertical withdrawal of the lid (3) relative to the neck (201); - said at least one second assembly member (304) and said at least one first assembly member (205) are fitted together by insertion so as to create a resistance to relative rotation of the lid (3) and the neck (201); when the lid (3) is in an open position, said at least one second assembly member (304) is spaced from said at least one first assembly member (205) and the rim (204) of the neck (201) to allow vertical withdrawal of the lid relative to the neck (201); the lid (3) is configured to move from the open position to the closed position and from the closed position to the open position by rotation of the lid about a neck (201); A pot characterized in that the at least one second assembly member (304) has flexibility and elasticity such that it can be inserted into the at least one first assembly member (205) and fitted together.
2. 2. The pot according to claim 1, wherein the contoured wall surface of the lid (3) defines a cavity (303) provided in the lid (3), and the cross section of the lid (3) corresponds to a superposition of a cross section of the neck portion (201) in a first position and a cross section of the neck portion (201) in a second position rotated by a predetermined angle relative to the first position.
3. 3. Pot according to claim 2, wherein said predetermined angle is less than 45°, strictly greater than 0° and preferably equal to 22°.
4. The pot according to any one of claims 1 to 3, wherein the neck (201) has an angular cross-section with a polygonal shaped base or with a polygonal shaped base with rounded corners and / or sides.
5. 5. The pot according to claim 4, wherein the neck (201) has a square cross section or a square cross section with rounded corners and / or sides.
6. The pot of claim 4 or claim 5, wherein the at least one first assembly member (205) is formed at one or more corners of a cross-section of the neck.
7. A pot according to any one of claims 4 to 6, wherein the neck (201) comprises a number of first assembly members (205) equal to the number of sides of the polygon.
8. A pot according to any one of the preceding claims, wherein the neck (201) has an elliptical cross section.
9. The pot according to any one of the preceding claims, wherein the lid (3) comprises a number of second assembly parts (304) equal to the number of first assembly parts (205) of the neck portion (201).
10. The pot according to any one of claims 1 to 9, wherein the at least one first assembly member (205) comprises protrusions (208) at the contoured locations of the outer wall surface (203) of the neck portion (201) and the at least one second assembly member (304) comprises recesses (306) of corresponding shape, or the at least one second assembly member (304) comprises protrusions (208) at the contoured locations of the outer wall surface (203) of the neck portion (201) and the at least one first assembly member (205) comprises recesses (306) of corresponding shape.
11. The pot according to any one of claims 1 to 10, wherein the at least one first assembly member (205) comprises a notch (207) formed in the neck portion (201) and the at least one second assembly member (304) comprises a lug (305) of corresponding shape, or the at least one second assembly member (304) comprises a notch (207) formed in the neck portion (201) and the at least one first assembly member (205) comprises a lug (305) of corresponding shape.
12. The pot of any one of claims 1 to 11, wherein the at least one first assembly member (205) comprises a rotation stop (206), the rotation stop (206) being configured to stop the at least one second assembly member (304) against the rotation stop (206).
13. 13. The pot according to claim 12, wherein the lid (3) comprises in the at least one second assembly part (304) a cut-out portion (307) which increases the elasticity of the second assembly part (304).
Citation Information
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