WO2023084374A1

WO2023084374A1 - A cup lid and a cup assembly

Info

Publication number: WO2023084374A1
Application number: PCT/IB2022/060671
Authority: WO
Inventors: Yunbo Wang
Original assignee: Stora Enso Oyj
Priority date: 2021-11-12
Filing date: 2022-11-07
Publication date: 2023-05-19
Also published as: CN216425372U

Abstract

The present disclosure relates to a cup lid and a cup assembly. The cup lid is used for matching with a cup body to close an opening of the cup body, wherein the cup lid comprises a cover body (11) and an interference fit part (12). The cover body (11) is configured to cover the opening of the cup body, and the interference fit part (12) extends from the cover body at the periphery of the cover body, and the interference fit part (12) comprises a first fitting wall (121) connected with the cover body, a curved connecting wall (122) extending from the first fitting wall, and a second fitting wall (123) extending from the connecting wall and opposite to the first fitting wall, wherein an annular accommodating groove (124) for accommodating an opening edge of the cup body is formed between the first fitting wall (121) and the second fitting wall (123), and the first fitting wall (121) and the second fitting wall (123) are configured to clamp both sides of the opening edge of the cup body in an interference fit manner.

Description

A CUP LID AND A CUP ASSEMBLY

Technical field

The present disclosure relates to a cup lid and a cup assembly.

Background

At present, in the field of beverage packaging, the paper- and plastic industry usually purchase cups, such as standard paper cups, and then produces their own cup lid to match the purchased paper cups. However, in the current industry, most cup lids, especially paper-plastic cup lids, can't achieve the required sealing effect, and drinks will leak out after the cup lids are attached on said paper cups. This is especially a problem when the drink is hot.

It is desired that the sealing between the cup lid and the cup body can be improved by improving the structure of the cup lid, especially the sealing between the paper-plastic cup lid and the paper cup. At the same time, it is desired that the sealing between the cup lid and the cup body can be improved at a low cost.

Summary of the invention

In view of the above-mentioned problems and demands, the present disclosure proposes a novel cup lid and a cup assembly with the cup lid, which can provide a good sealing effect.

Some embodiments of the present disclosure relate to a cup lid for cooperating with a cup body to close an opening of the cup body. The cup lid comprises a cover body configured to cover the opening of the cup body, and an interference fit part extending from the cover body at the periphery of the cover body. The interference fit part comprises a first fitting wall connected with the cover body, a curved connection wall extending from the first fitting wall, and a second fitting wall extending from the connection wall and opposite to the first fitting wall, wherein an annular accommodating groove for accommodating an opening edge of the cup body is formed between the first fitting wall and the second fitting wall, and the first fitting wall and the second fitting wall are configured to clamp both sides of the opening edge of the cup body in an interference fit manner.

According to the preferred scheme, the cover body comprises a flat part at its periphery, and the first fitting wall of the interference fitting part is connected with the flat part and forms an angle of 70 to 90 degrees with respect to the flat part.

According to the preferred scheme, the first fitting wall is at an angle greater than 0 degrees and less than or equal to 20 degrees relative to a longitudinal axis of the cup lid.

According to the preferred scheme, the second fitting wall is at an angle greater than 0 degrees and less than or equal to 20 degrees relative to the longitudinal axis of the cup lid.

According to a preferred scheme, the cover body comprises a bulge higher than the flat part.

According to the preferred scheme, the cover body further comprises a drinking port located on the bulge, and the cup lid further comprises a drinking port plug detachably mounted to the drinking port.

According to the preferred scheme, the cup lid further comprises an extension part extending from the second fitting wall, and the inner wall of the extension part is provided with a protrusion which is located between the second fitting wall and an end of the extension part.

According to the preferred scheme, the cup lid is molded from paper pulp.

Other disclosed embodiments relate to a cup assembly, which comprises a cup body and a cup lid as described above, wherein when the cup body and the cup lid are matched together, the cover body of the cup lid covers an opening of the cup body, an edge of the opening of the cup body is accommodated in an accommodating groove of the cup lid, and an interference fit part of the cup lid clamps the edge of the opening of the cup body in an interference fit manner.

According to the preferred scheme, the edge of the opening of the cup body is a curling edge, and the interference fit part of the cup lid clamps the curling edge in an interference fit manner.

According to the preferred scheme, when the cup body and the cup lid are fitted together, the first fitting wall of the interference fit part causes an inner side of the curling edge to deform by 0.1mm to 0.4 mm, and the second fitting wall causes an outer side of the curling edge to deform by 0.1mm to 0.4mm. The advantages of the cup lid and the cup assembly provided by the present disclosure are at least that the cup body and the cup lid are allowed to be combined together in an interference fit manner, and the connecting portion of the cup body and the cup lid has good sealing performance.

Hereinafter, a more detailed description of the best embodiment for implementing the present disclosure will be given with reference to the accompanying drawings, so that the features and advantages of the present disclosure can be easily understood.

Brief description of the figures

By way of non-limiting examples only, embodiments of aspects of the present disclosure will now be described with reference to the accompanying figures in which:

Fig. 1 shows a cup assembly proposed in this disclosure, and separately shows a cup lid and a drinking port plug detachably mounted to a cup lid;

Fig. 2 shows a longitudinal sectional view of the cup lid proposed in the present disclosure;

Fig. 3 is a longitudinal sectional view showing the matching relationship between the cup lid and the cup body proposed in this disclosure;

Fig. 4 shows a partial enlarged view of a circled part of the cup lid as shown in fig. 3. LIST OF REFERENCE NUMBERS

1 cup lid

11 cover body

111 flat part

112 bulge

113 drinking port

114 drinking port plug

12 an interference fit part

121 a first fitting wall

122 a connecting wall

123 a second fitting wall

124 an accommodating groove

125 an extension part

126 end

1251 protrusion

2 cup body

21 curling edge

211 an inner side

212 an outer side

Detailed description

In order to make the objects and advantages of the technical scheme of the present disclosure clearer, the technical scheme of the embodiment of the present disclosure will be clearly and completely described below with reference to the drawings of specific embodiments of the present disclosure. In the drawings, the same reference numerals represent the same parts. It should be noted that the described embodiments are part of the embodiments of this disclosure, but not all of them. Based on the described embodiments of this disclosure, all other embodiments obtained by ordinary technicians in this field without creative labor are within the scope of protection of this disclosure.

Compared with the embodiments shown in the drawings, the feasible embodiments within the scope of protection of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. In addition, two or more components in the figure may be implemented in a single component, or a single component shown in the figure may be implemented as a plurality of separate components.

Unless otherwise defined, the technical terms or scientific terms used here shall have their ordinary meanings as understood by those with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and the like used in the specification and claims of this published patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" don't necessarily mean quantity limitation. Similar words such as "including" or "including" mean that the elements or objects appearing before the word cover the listed elements or objects appearing after the word and their equivalents, without excluding other elements or objects. Words like "connected" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left" and "right" are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The present disclosure relates to a cup lid and a cup assembly with the cup lid. The purpose of the present disclosure is to improve the sealing between the cup lid and the cup body by changing the structure of the cup assembly, in particular to improve the sealing effect by changing the structure of the cup lid.

Fig. 1 of this disclosure shows the cup assembly proposed in this disclosure, and separately shows the cup lid and a drinking plug detachably fixed to the cup lid. Fig. 2 shows a longitudinal section of the cup lid proposed in this disclosure, and fig. 3 shows the matching relationship between the cup lid and the cup body in a longitudinal section. Fig. 4 shows a partial enlarged view of a circled part of the cup lid as shown in fig. 3 to further show the structure of the interference fit part of the cup lid.

Firstly, the structure and preferred features of the cup lid proposed in this disclosure will be introduced with reference to the attached drawings.

The cup lid is used to cooperate with the cup body to close an opening of the cup body. For this reason, generally speaking, the cup lid comprises a cover body 11 covering the opening of the cup body, and a cup body matching structure for realizing matching connection with the cup body. The specific structure of the cover body 11 is not limited. In the preferred embodiment of the present disclosure as shown in the drawings, the cover body 11 is generally circular.

The cup body matching structure is used to fit and connect with an opening edge of the cup body, so that the cup lid 1 and the cup body 2 fit together, and a certain force is needed to separate them. In order to improve the sealing performance of the cup lid 1 and the cup body 2, the cup body matching structure of the cover body is improved, and the cup body matching structure is set as an interference fitting structure, which is referred to as an interference fit part 12 here.

Referring to the drawings, the interference fit part 12 extends from the cover body 11 at the periphery of the cover body 11.

Preferably, the interference fit part 12 and the cover body 11 are of an integral structure.

The interference fit part 12 comprises a first fitting wall 121 connected to the cover body 11, a curved connecting wall 122 extending from the first fitting wall, and a second fitting wall 123 extending from the connecting wall and opposite to the first fitting wall. The first fitting wall 121, the connecting wall 122 and the second fitting wall 123 are of an integrated structure, and smoothly transition between them. The first fitting wall 121 and the second fitting wall 123 are preferably slightly curved wall structures, and may have straight portions.

An annular accommodating groove 124 for accommodating the opening edge of the cup body is formed between the first and second fitting walls 121 and 123, and the opening edge of the cup body, especially the curling edge 21 of the cup body, can be engaged in the annular accommodating groove 124 in an interference fit manner. In addition, the first fitting wall 121 and the second fitting wall 123 are configured to clamp both sides of the opening edge of the cup body in an interference fit manner.

With the above structure, the cup body and the cup lid are combined together in an interference fit manner, so that the connecting portion of the cup body and the cup lid has good tightness. Furthermore, the present disclosure provides the first and second fitting walls opposite to each other, which can clamp an inner side and an outer side of the opening edge from two directions respectively, which further improves the sealing performance of the cup lid and the cup body.

Referring to fig. 4, it shows a cross-sectional view after the cup lid and the cup body are fitted together, wherein the figure shows the complete structure of the cup body, but shows the curling edge 21 which is fitted with the interference fit part 12. It can be seen that when the cup body is fitted with the cup lid, the first fitting wall 121 of the interference fit part 12 of the cup body can cause the inner side 211 of the curling edge 21 of the cup body to deform, and the second fitting wall 123 of the cup body can cause the outer side 212 of the curling edge 21 to deform, so as to achieve interference fit.

Among them, the present disclosure is applicable to cup bodies and cup lids of various common sizes, especially conventional paper cups and corresponding cup lids. According to some embodiments, the volume of the cup body can be between 60ml and 1000ml, for example. According to some embodiments, the diameter of the bottom of the cup body can be between 30 mm and 110 mm, for example. According to some embodiments, the diameter of the opening part of the cup body may be between 50 mm and 135 mm, for example. According to some embodiments, the height of the cup body can be between 50 mm and 170 mm, for example. According to some embodiments, the diameter of the curling edge of the cup body may be, for example, between 2mm and 10mm, and more preferably, the diameter of the curling edge of the cup body may be, for example, between 3mm and 7mm.

According to some embodiments, the maximum peripheral dimension of the cup lid may be between 50 mm and 140 mm, for example. According to some embodiments, the height of the cup lid may be between 5 mm and 50 mm, for example. According to some embodiments, the minimum distance between the first fitting wall 121 and the third fitting wall 123 of the cup lid may be, for example, between 2mm and 10mm, and more preferably, the minimum distance between the first fitting wall 121 and the third fitting wall 123 may be, for example, between 3mm and 7mm.

Preferably, the first fitting wall 121 of the interference fit part 12 causes the deformation of the inner side 211 of the curling edge 21 by 0.1mm to 0.4mm, and more preferably 0.2 mm. Preferably, the second fitting wall 123 causes the deformation of the outer side 212 of the curling edge 21 by 0.1mm to 0.4mm, and more preferably 0.2 mm. Such size and structural features are beneficial to the good sealing between the cup lid and the cup body with conventional size.

According to a preferred embodiment of the present disclosure, the cover body 11 comprises a flat part 111 at its outer periphery. Such flat part is marked in Figures 1 and 2. The first fitting wall 121 of the interference fit part 12 is connected with the flat part 111, and is bent toward the flat part. Preferably, the first fitting wall 121 is at an angle of 70 to 90 degrees with respect to the flat part. More preferably, the first fitting wall 121 is at an angle of 80 to 85 degrees with respect to the flat part.

Preferably, the first fitting wall 121 is at an angle greater than 0 degrees and less than or equal to 20 degrees with respect to a longitudinal axis of the cup lid. More preferably, the first fitting wall 121 is at an angle greater than 10 degrees and less than or equal to 15 degrees with respect to the longitudinal axis of the cup lid.

Preferably, the second fitting wall 123 is at an angle greater than 0 degrees and less than or equal to 20 degrees with respect to the longitudinal axis of the cup lid. More preferably, the second fitting wall 123 is at an angle greater than 10 degrees and less than or equal to 15 degrees with respect to the longitudinal axis of the cup lid.

Through the above angle features, it is further beneficial to the good sealing between the cup lid and the cup body, and the structure of the interference fit part is easy for the filler and the product to be separated from the hot press die in the hot press forming process, thus having very low manufacturing cost. According to a preferred embodiment of the present disclosure, the cover bodyll comprises a bulge 112 higher than the flat part 111. Among them, the existence of the bulge is beneficial to increase the volume of the cup assembly and improve the aesthetic appearance of the cup assembly.

According to a preferred embodiment of the present disclosure, the cover body 11 further comprises a drinking port 113 located on the bulge 112. Preferably, the drinking port 113 is an opening structure protruding from the bulge 112, and preferably has a smooth and tapered shape, so as to improve the user's feeling of using the drinking port to drink the beverage in the cup body. In addition, the cup lid also comprises a drinking port plug 114 detachably mounted to the drinking port 113. Fig. 1 shows a state where the drinking port plug 114 is separated from the cup lid.

The arrangement of the drinking port 113 and the drinking port plug is beneficial to improve the practicability of the cup assembly.

According to a preferred embodiment of the present disclosure, the cup lid further comprises an extension 125 extending from the second fitting wall 123. The extension forms the free outer edge of the cup lid. An inner wall of the extension is provided with a protrusion 1251, which is located between the second fitting wall 123 and an end 126 of the extension. The protrusion can reduce or even avoid the risk of the cup lid and a paper cup falling off after buckling. The cup lid proposed in this disclosure is preferably formed by paper pulp molding, but the material of the cup lid disclosed in this disclosure is not limited to paper pulp, for example, it can also be formed by plastic and other materials. Similarly, the cup body fitted with the cup lid is preferably molded from paper pulp, but the forming material is not limited to paper pulp, but can also be made from plastic and other materials.

This disclosure also provides a cup assembly. The structure and preferred features of the cup assembly provided in this disclosure are briefly introduced below.

The cup assembly proposed in this disclosure comprises a cup body 2 and a cup lid, and the cup lid can be the cup lid 1 proposed in any of the previous embodiments.

When the cup body 2 and the cup lid 1 are fitted together, the cover body 11 of the cup lid 1 covers an opening of the cup body 2, and the edge at the opening of the cup body is received in an accommodating groove 124 of the cup lid 1, and the interference fit part 12 of the cup lid 1 clamps the edge at the opening of the cup body in an interference fit manner.

Preferably, the edge of the opening of the cup body is a curling edge 21, and the interference fit part 12 of the cup lid clamps the curling edge 21 in an interference fit manner. The matching structure of the curling edge and the interference fit part is beneficial to improve the sealing performance between the cup lid and the cup body. As mentioned above, when the cup body and the cup lid are fitted together, the first fitting wall 121 of the interference fitting part 12 causes an inner side 211 of the curling edge 21 to deform by 0.1mm to 0.4 mm, and more preferably by 0.2 mm.

The second fitting wall 123 causes the deformation of an outer side 212 of the curling edge 21 to be 0.1mm to 0.4mm, and more preferably 0.2 mm. Through this structural feature, it is beneficial to the good sealing between the cup lid and the cup body with conventional size.

The exemplary implementation of the scheme proposed in this disclosure has been described in detail above with reference to the preferred embodiments.

However, it can be understood by those skilled in the art that without departing from the concept of this disclosure, various changes and modifications can be made to the above specific embodiments, and various technical features and structures proposed in this disclosure can be combined in various ways without exceeding the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A cup lid, which is used for matching with a cup body to close an opening of the cup body, is characterized in that the cup lid comprises: a cover body (11) configured to cover the opening of the cup body; an interference fit part (12) extending from the cover body at the periphery of the cover body , the interference fit part (12) comprises a first fitting wall (121) connected with the cover body , a curved connecting wall (122) extending from the first fitting wall, and a second fitting wall (123) extending from the connecting wall and opposite to the first fitting wall, wherein an annular accommodating groove (124) for accommodating an opening edge of the cup body is formed between the first fitting wall (121) and the second fitting wall (123), and the first fitting wall (121) and the second fitting wall (123) are configured to clamp both sides of the opening edge of the cup body in an interference fit manner.

2. The cup lid according to claim 1, characterized in that the cover body (11) comprises a flat part (111) at its periphery, and the first fitting wall (121) of the interference fit part (12) is connected with the flat part (111) and forms an angle of 70 to 90 degrees with respect to the flat part.

3. The cup lid according to claim 1, characterized in that the first fitting wall (121) is at an angle greater than 0 degrees and less than or equal to 20 degrees relative to a longitudinal axis of the cup lid.

4. The cup lid according to claim 1, characterized in that the second fitting wall (123) is at an angle greater than 0 degrees and less than or equal to 20 degrees relative to a longitudinal axis of the cup lid.

5. The cup lid according to claim 2, characterized in that the lid body (11) comprises a bulge (112) higher than the flat part (111).

6. The cup lid according to claim 5, characterized in that the lid body (11) further comprises a drinking port (113) on the bulge (112), and the cup lid further comprises a drinking port plug (114) detachably mounted to the drinking port (113).

7. The cup lid according to claim 1, characterized in that the cup lid further comprises an extension part (125) extending from the second fitting wall (123), the inner wall of which is provided with a protrusion (1251) located between the second fitting wall (123) and an end (126) of the extension.

8. The cup lid according to claim 1, characterized in that the cup lid is molded from paper pulp.

9. A cup assembly is characterized by comprising: a cup body (2); a cup lid (1) as claimed in any one of the preceding claims; wherein, when the cup body (2) and the cup lid (1) are matched together, the cover body (11) of the cup lid (1) covers an opening of the cup body (2), the edge of the opening of the cup body is accommodated in an accommodating groove (124) of the cup lid (1), and an interference fit part (12) of the cup lid (1) clamps the edge of the opening of the cup body in an interference fit manner.

10. The cup assembly according to claim 9 is characterized in that the edge of the opening of the cup body is a curling edge (21), and 17 the interference fit part (12) of the cup lid clamps the curling edge (21) in an interference fit manner.

11. The cup assembly according to claim 9, characterized in that when the cup body and the cup lid are fitted together, the first fitting wall (121) of the interference fit part (12) causes the deformation of an inner side (211) of the curling edge (21) by 0.1mm to 0.4 mm, and the second fitting wall (123) causes the deformation of an outer side (212) of the curling edge (21) by 0.1mm to 0.4 mm.