Container assembly and its lid and container

Abstract

A container assembly, a cover and a container thereof, the container assembly comprising a container and a cover. The container has a mouth portion, the cover is detachably connected to the mouth portion of the container and comprises a cover portion, a connecting portion connected to the periphery of the cover portion, and a plurality of stop protrusions. The connecting portion comprises an outer sidewall surrounding the mouth portion and capable of contacting the outer sidewall. The stop protrusions are formed on the inner surface of the outer sidewall and form an angle with the end edge of the outer sidewall. Each of the stop protrusions defines a gap with the adjacent stop protrusion, and the highest point in the direction of the axis and the lowest point of the mouth portion in the direction of the axis define a contact area in frictional contact with the mouth portion, and the height of each of the contact areas in the direction of the axis is more than 30% of the height of the corresponding stop protrusion in the direction of the axis.

Description

TECHNICAL FIELD

[0001] The present invention relates to a cover and a container, and in particular, to a container assembly for containing liquid and a cover and a container thereof. BACKGROUND

[0002] Referring to Figure 1 , a known paper-plastic cover 1 disclosed in Taiwan Patent No. I610007B includes a central portion 11, a rim portion 12 connected to a periphery of the central portion 11, and a snap portion 13. The rim portion 12 has two side walls 121 and a top rim portion 122 connected to the side walls 121. The snap portion 13 is formed on an inner surface of the outermost side wall 121.

[0003] When the paper-plastic cover 1 is connected to an external container 2, the snap portion 13 surrounds the external container 2 and abuts against a lower edge of a protrusion portion 21 connected to the external container 2. In this way, the paper-plastic cover 1 can be firmly combined with the external container 2.

[0004] The snap portion 13 and the protrusion portion 21 abut against each other in an upwardly and downwardly offset relationship. Therefore, the snap portion 13 and the protrusion portion 21 can block each other to prevent the paper-plastic cover 1 or the external container 2 from being detached. However, in the case of weak lateral friction, the paper-plastic cover 1 and the external container 2 can easily rotate relative to each other. In the case where a gap is formed between the top rim portion 122, the innermost side wall 121 and the protrusion portion 21, the sealing effect of the paper-plastic cover 1 and the external container 2 is poor. SUMMARY

[0005] The present invention aims to provide a cover of a container assembly with good sealing effect.

[0006] The cover of the container assembly of the present invention, the container assembly including a container having a mouth portion surrounding an axis, the cover being detachably connected to the mouth portion of the container and defining a containing space with the container, the cover including a cover portion, a connecting portion, and a plurality of stop protrusions.

[0007] The connecting portion is connected to a periphery of the cover portion and includes an outer side wall surrounding the mouth portion, the outer side wall abutting against the mouth portion and having an end edge.

[0008] The stop protrusions surround the axis and are formed on the outer sidewall, each stop protrusion forms an included angle with the end edge, and defines a gap with an adjacent stop protrusion, each stop protrusion has a highest point along the axis direction, and a lowest point of the spout along the axis direction defines a contact area in frictional contact with the spout, and a height of each contact area along the axis direction is more than 30% of a height of the corresponding stop protrusion along the axis direction.

[0009] The cover of the container combination of the present application has an included angle of 15 to 45 degrees.

[0010] The cover of the container combination of the present application has a ratio of a thickness of each stop protrusion protruding from the outer sidewall to a thickness of the outer sidewall along a radial width direction perpendicular to the axis of 1:1 to 1:4.

[0011] The cover of the container combination of the present application has a thickness of each stop protrusion protruding from the outer sidewall of 0.2 to 1.2 mm.

[0012] The cover of the container combination of the present application has each stop protrusion extending along a radial width direction perpendicular to the axis and defining an overlapping area with an adjacent stop protrusion, the overlapping area has a width along the radial width direction of 10% to 60% of a width of the corresponding stop protrusion along the radial width direction.

[0013] The cover of the container combination of the present application has a number of stop protrusions of 20 to 120.

[0014] The cover of the container combination of the present application has the cover portion, the connecting portion, and the stop protrusions integrally manufactured from pulp.

[0015] The cover of the container combination of the present application has the connecting portion further comprising an inner sidewall surrounding the axis and spaced apart from the outer sidewall, and an abutting wall connected to the inner sidewall and the outer sidewall and having a positional difference from the cover portion along the axis direction, the inner sidewall and the outer sidewall abut against the spout and are clamped on both sides of the spout with the outer sidewall, and the abutting wall and the inner sidewall and the outer sidewall define a closing space opposite to the abutting wall and used for accommodating the spout.

[0016] The cover of the container combination of the present application has a width of the closing space along a radial width direction perpendicular to the axis greater than a width of the abutting wall along the radial width direction.

[0017] The present application aims to provide a container combination with good sealing effect, which comprises a plurality of covers as described above and a plurality of containers.

[0018] Each of the cover bodies is detachably connected to a mouth portion of a corresponding container and defines a storage space with the corresponding container, the cover bodies are stackable along the axial direction, and when the cover bodies are stacked, the abutting wall of one of the cover bodies abuts against the stop protrusion of an adjacent cover body, and the cover portion, the abutting wall and the inner side wall of each of the cover bodies are spaced apart from the cover portion, the abutting wall and the inner side wall of the adjacent cover body, respectively.

[0019] The present application aims to provide a container assembly with good sealing effect, which comprises the cover body as described above and the container.

[0020] The container assembly of the present application, the container further comprises a bottom, and a surrounding portion extending from the periphery of the bottom along the axial direction and connected to the mouth portion, the mouth portion has an inner ring wall connected to one end of the surrounding portion opposite to the bottom, an outer ring wall surrounding the axis and spaced apart from the inner ring wall, and a top wall connecting the inner ring wall and the outer ring wall and forming a positional difference with the bottom along the axial direction, the top wall, the inner ring wall and the outer ring wall define an annular space with an opening opposite to the top wall, the outer side wall of the cover body surrounds the outer ring wall of the container, and the stop protrusion is forced against the outer ring wall, so that the outer ring wall is sunk into the gap and frictionally contacts the outer side wall and the stop protrusion, the connecting portion further comprises an inner side wall surrounding the axis and spaced apart from the outer side wall, and an abutting wall connected to the inner side wall and the outer side wall and forming a positional difference with the cover portion along the axial direction, the inner side wall of the cover body is forced against the inner ring wall of the container, and the abutting wall of the cover body is forced against the top wall of the container.

[0021] The present application aims to provide a container with good sealing effect, which is matched with the cover body as described above and comprises a bottom, a surrounding portion extending from the periphery of the bottom along the axial direction, and a mouth portion.

[0022] The mouth portion comprises an inner ring wall surrounding the axis and connected to one end of the surrounding portion opposite to the bottom, an outer ring wall surrounding the axis and spaced apart from the inner ring wall, and a top wall connecting the inner ring wall and the outer ring wall and forming a positional difference with the bottom along the axial direction, the top wall, the inner ring wall and the outer ring wall contact the connecting portion of the cover body and define an annular space with an opening opposite to the top wall, and the outer ring wall is forced against the outer side wall of the cover body and sunk into the gap, and frictionally contacts the outer side wall and the stop protrusion.

[0023] The container of the present application, the bottom, the surrounding portion and the mouth portion are integrally manufactured from pulp.

[0024] The container of the present invention, the surrounding portion has a small diameter section connected to the bottom portion, a large diameter section connected to the mouth portion, and an abutting section connected to the large diameter section and the small diameter section, the width of the small diameter section along the radial direction perpendicular to the axis is smaller than the width of the large diameter section along the radial direction.

[0025] The present invention has the beneficial effect of increasing the frictional resistance when the cap and the container rotate relative to each other by the stop protrusion around the mouth portion and the gap. In this way, the purpose of limiting the relative rotation of the cap and the container is achieved, and the bonding force and stability of the cap and the container are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a cross-sectional view illustrating a known paper-plastic cap disclosed in Taiwan Patent No. I610007B;

[0027] Figure 2 is an exploded perspective view illustrating an embodiment of the container combination of the present invention;

[0028] Figure 3 is a cross-sectional view of the embodiment;

[0029] Figure 4 is a perspective view of the cap in the embodiment;

[0030] Figure 5 is a cross-sectional view of the cap in the embodiment;

[0031] Figure 6 is a partially enlarged cross-sectional view of the embodiment;

[0032] Figure 7 is a cross-sectional view illustrating a plurality of caps in the embodiment stacked on each other;

[0033] Figure 8 is a cross-sectional view illustrating a plurality of containers in the embodiment stacked on each other;

[0034] Figure 9 is a cross-sectional view similar to Figure 3 , but the container and the cap have different shapes. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0036] Referring to Figure 2 and Figure 3 , one embodiment of the container combination of the present invention includes a container 3 and a cap 4.

[0037] In the present embodiment, the container 3 is a cup. The container 3 includes a bottom 31, a surrounding portion 32 extending from a periphery of the bottom 31 in a direction of an axis X, and a mouth portion 33 surrounding the axis X. The bottom 31, the surrounding portion 32, and the mouth portion 33 are integrally molded from pulp.

[0038] The surrounding portion 32 has a small-diameter section 321 connected to the bottom 31, a large-diameter section 322 opposite the small-diameter section 321, and an abutment section 323 connected to the small-diameter section 321 and the large-diameter section 322. A width Dl of the small-diameter section 321 in a radial width direction Y perpendicular to the axis X is smaller than a width D2 of the large-diameter section 322 in the radial width direction Y.

[0039] The mouth portion 33 includes an inner annular wall 331 connected to an end of the large-diameter section 322 opposite the bottom 31, an outer annular wall 332 surrounding the axis X and spaced apart from the inner annular wall 331, and a top wall 333 connected to the inner annular wall 331 and the outer annular wall 332 and having a positional difference from the bottom 31 in the direction of the axis X. The top wall 333, the inner annular wall 331, and the outer annular wall 332 define an annular space 330 open opposite the top wall 333. The outer annular wall 332 has a lowest point 334 in the direction of the axis X.

[0040] Referring to Figure 3 , Figure 4 and Figure 5 , the lid 4 is detachably connected to the mouth portion 33 of the container 3 and defines a closed accommodation space 40 with the container 3. The accommodation space 40 is adapted to accommodate a liquid. The lid 4 includes a centrally located cover portion 41, a connecting portion 42 connected to a periphery of the cover portion 41, and a plurality of stop protrusions 43. The cover portion 41, the connecting portion 42, and the stop protrusions 43 are integrally molded from pulp.

[0041] The connecting portion 42 includes an inner side wall 421 surrounding the axis X and connected to the cover portion 41, an outer side wall 422 surrounding the axis X and spaced apart from the inner side wall 421 and the mouth portion 33, and an abutment wall 423 connected to the inner side wall 421 and the outer side wall 422 and having a positional difference from the cover portion 41 in the direction of the axis X. The outer side wall 422 has an end edge 424 opposite the abutment wall 423. The abutment wall 423, the inner side wall 421, and the outer side wall 422 define a conjugate space 420 open opposite the abutment wall 423. A width D3 of the abutment wall 423 in the radial width direction Y is smaller than a width D4 of the conjugate space 420 in the radial width direction Y.

[0042] The stop protrusion 43 surrounds the axis X and is formed on the inner surface of the outer side wall 422. Each stop protrusion 43 extends along the radial width direction Y and forms an angle θ with the end edge 424. The angle θ is between 15 degrees and 45 degrees. Preferably, the angle is 25 degrees. Each stop protrusion 43 has a highest point 431 (see figure) along the axis X. Figure 6 Each of the stop protrusions 43 defines a gap 430 with an adjacent stop protrusion 43. Each of the stop protrusions 43 also defines an interleaved overlapping area 43a with an adjacent stop protrusion 43. The width D5 of the overlapping area 43a along the radial width direction Y is 10% to 60% of the width D6 of the corresponding stop protrusion 43 along the radial width direction Y.

[0043] The ratio of the thickness T1 of each of the stop protrusions 43 protruding from the outer wall 422 to the thickness T2 of the outer wall 422 along the radial width direction Y is between 1:1 and 1:4. Preferably, it is between 1:2 and 1:3. In this embodiment, the number of stop protrusions 43 is between 20 and 120, preferably between 40 and 120. The width D6 of each stop protrusion 43 along the radial width direction Y is between 5 mm and 20 mm, and the thickness T1 of each stop protruding from the outer wall 422 along the radial width direction Y is between 0.2 mm and 1.2 mm, preferably between 0.3 mm and 0.6 mm.

[0044] See Figure 3 , Figure 5 and Figure 6 When the cover 4 moves relative to the container 3 along the X-axis and is fitted onto the opening 33, the opening 33 of the container 3 passes through the mating space 420 and presses against the abutment wall 423 of the cover 4. At this time, the mating space 420 of the cover 4 will receive the opening 33 of the container 3. Furthermore, the inner wall 421 and the outer wall 422 of the cover 4 will press against and clamp the inner ring wall 331 and the outer ring wall 332 of the container 3.

[0045] In this way, the inner wall 421 of the cover 4 and the inner ring wall 331 of the container 3, the outer wall 422 of the cover 4 and the outer ring wall 332 of the container 3, and the abutting wall 423 of the cover 4 and the top wall 333 of the container 3 will form three tight rings from the inside out due to mutual abutment and friction contact.

[0046] More importantly, since the container 3 and the cover 4 are made of pulp, they are elastically deformable. Therefore, during the process of the outer side wall 422 of the cover 4 pressing against the outer ring wall 332 of the container 3, the outer ring wall 332 can not only deform through the annular space 330 to be closer to the outer side wall 422, but also the stop protrusion 43 between the outer side wall 422 and the outer ring wall 332 can press against the outer ring wall 332 of the container 3.

[0047] At this time, each stop protrusion 43 defines a contact area 43b in frictional contact with the mouth 33 by the highest point 431 and the lowest point 334 of the mouth 33. Moreover, part of the thickness of the outer ring wall 332 can be sunk into the gap 430 and be in frictional contact with the outer side wall 422 and the stop protrusion 43. The height H1 of each contact area 43b along the direction of the axis X is more than 30% of the height H2 of the corresponding stop protrusion 43 along the direction of the axis X. The size of each contact area 43b is proportional to the frictional force between each stop protrusion 43 and the mouth 33.

[0048] In this way, not only can the area of the cover 4 in frictional contact with the mouth 33 be greatly increased to improve the stability of the connection between the cover 4 and the mouth 33, but also the sealing ring can form a protective layer in different blocking directions to prevent the liquid in the accommodation space 40 from leaking out. More importantly, in the case that part of the thickness of the outer ring wall 332 is sunk into the gap 430, the stop protrusion 43 can be engaged with the outer ring wall 332 of the container 3 to block the relative rotation between the container 3 and the cover 4.

[0049] Since the container 3 and the cover 4 are made of pulp, the outer side wall 422, the stop protrusion 43 and the outer ring wall 332 are deformable. Therefore, when the external force is sufficient to deform the stop protrusion 43 or deform the outer ring wall 332, the container 3 and the cover 4 can still rotate slightly.

[0050] Referring to Figure 7 In addition, before the cover 4 is connected to the container 3, the cover 4 can be stacked along the direction of the axis X. When the cover 4 is stacked, the abutting wall 423 of one cover 4 abuts against the stop protrusion 43 of the adjacent cover 4. Moreover, the cover part 41, the abutting wall 423 and the inner side wall 421 of each cover 4 are spaced apart from the cover part 41, the abutting wall 423 and the inner side wall 421 of the adjacent cover 4, respectively. In this way, not only can the occupied space be reduced to improve the space efficiency, but also the contact area of the adjacent covers 4 can be reduced to avoid the mutual extrusion of the adjacent covers 4, so that the outermost cover 4 is easy to access.

[0051] Reference Figure 8 Similarly, before the containers 3 in multiple embodiments are connected to the cover body 4, the containers 3 can also be stacked along the direction of the axis X. When the containers 3 are stacked, the mouth portion 33 of one of the containers 3 abuts against the abutting section 323 of the adjacent container 3, and the bottom 31 and the surrounding portion 32 of each container 3 are spaced apart from the bottom 31 and the surrounding portion 32 of the adjacent container 3 respectively. By doing so, not only can the occupied space be reduced to improve space efficiency, but also the contact area between adjacent containers 3 can be reduced, preventing adjacent containers 3 from squeezing each other, and making it easy to access the outermost container 3.

[0052] It should be noted that the container 3 is not limited to being a cup body. In other variations of this embodiment, it can also be, as Figure 9 shown, a bowl, or a container 3 with other shapes. Since those skilled in the art can infer and expand the details based on the above description, no further elaboration will be provided.

[0053] Through the above description, the advantages of the foregoing embodiments can be summarized as follows: <�

[0054] 1. The present invention can make the inner side wall 421, the outer side wall 422, and the abutting wall 423 of the cover body 4 abut against and contact the inner ring wall 331, the outer ring wall ۳۳۲, and the top wall 333 of the container 3 respectively, forming three sealing rings with different blocking directions from the inside out, thereby effectively preventing the liquid in the accommodating space 40 from leaking outwards and improving the overall sealing performance.

[0055] 2. The blocking convex portion 43 surrounds and frictionally contacts the outer ring wall 332 of the mouth portion 33. In addition to being able to cooperate with the outer side wall 422 pressing against the outer ring wall 332 to greatly increase the friction contact area, thereby enhancing the lateral frictional force and the bonding force and stability between the cover body 4 and the container 3, more importantly, when a part of the wall thickness of the outer ring wall 332 sinks into the gap 430, the blocking convex portion 43 will engage with the outer ring wall 332 of the container 3, blocking the relative rotation between the container 3 and the cover body 4.

[0056] 3. Additionally, through the design of the abutting wall 423 and the blocking convex portion 43 of the cover body 4, when multiple cover bodies 4 are stacked, the covering portion 41, the abutting wall 423, and the inner side wall 421 of each cover body 4 can be spaced apart from the covering portion 41, the abutting wall 423, and the inner side wall 421 of the adjacent cover body 4 respectively. Furthermore, the contact area between adjacent cover bodies 4 can be reduced, preventing adjacent cover bodies 4 from squeezing each other, and making it easy to access the outermost cover body 4.

[0057] 4、Similarly, through the design of the abutting section 323 of the surrounding portion 32 of the container 3, the bottom 31 and the surrounding portion 32 of each container 3 can be spaced apart from the bottom 31 and the surrounding portion 32 of the adjacent container 3 when the containers 3 are stacked. Further, the contact area of the adjacent containers 3 is reduced, and the adjacent containers 3 are prevented from being pressed against each other, so that the outermost container 3 is easily accessible.

[0058] The above description is only an embodiment of the present application, and cannot limit the scope of the present application. Any simple equivalent changes and modifications made according to the claims and the description of the present application are still within the scope of the present application.

Claims

1. A lid for a container assembly, the container assembly comprising a container including a bottom, a surrounding portion extending from a periphery of the bottom in a direction of an axis, a mouth portion surrounding the axis, the mouth portion including an inner annular wall connected to an end of the surrounding portion opposite the bottom, an outer annular wall surrounding the axis and spaced from the inner annular wall, and a top wall connecting the inner annular wall and the outer annular wall and having a position difference from the bottom in the direction of the axis, the top wall, the inner annular wall and the outer annular wall contacting a connecting portion of the lid and defining an annular space opposite the top wall, the bottom, the surrounding portion and the mouth portion being integrally formed from paper pulp, the lid being detachably connected to the mouth portion of the container and defining a containing space with the container, the lid comprising: a cover portion; a connecting portion connected to a periphery of the cover portion and including an outer side wall surrounding the mouth portion, the outer side wall abutting the mouth portion and having an end edge; the lid further comprising: a plurality of stop protrusions surrounding the axis and formed on the outer side wall, each of the stop protrusions making an included angle with the end edge and defining a gap with an adjacent stop protrusion, each of the stop protrusions defining a contact area in frictional contact with the mouth portion at a highest point of the stop protrusion in the direction of the axis and a lowest point of the mouth portion in the direction of the axis, a height of each of the contact areas in the direction of the axis being more than 30% of a height of the corresponding stop protrusion in the direction of the axis and less than the height of the stop protrusion in the direction of the axis, the outer annular wall abutting the outer side wall of the lid and being recessed into the gaps while being in frictional contact with the outer side wall and the stop protrusions. The included angle is between 15 degrees and 45 degrees. A ratio of a thickness of each of the stop protrusions protruding from the outer side wall to a thickness of the outer side wall in a radial direction perpendicular to the axis is between 1:1 and 1:

4. characterized in that The thickness of each of the stop protrusions protruding from the outer side wall is between 0.2 mm and 1.2 mm. Each of the stop protrusions extends in the radial direction perpendicular to the axis and defines an interlaced overlapping area with an adjacent stop protrusion, a width of the overlapping area in the radial direction being between 10% and 60% of a width of the corresponding stop protrusion in the radial direction.

2. The lid of the container combination according to claim 1, characterized in that: The number of the stop protrusions is between 20 and 120.

3. The lid of the container combination according to claim 1, characterized in that: The cover portion, the connecting portion and the stop protrusions are integrally formed from paper pulp.

4. The lid of the container combination according to claim 3, characterized in that: The connecting portion further includes an inner side wall surrounding the axis and spaced from the outer side wall, and an abutting wall connected to the inner side wall and the outer side wall and having a position difference from the cover portion in the direction of the axis, the inner side wall and the outer side wall abutting the mouth portion and sandwiched by the outer side wall on both sides of the mouth portion, the abutting wall, the inner side wall and the outer side wall defining a mating space opposite the abutting wall and for receiving the mouth portion.

5. The lid of the container combination according to claim 1, characterized in that: A width of the mating space in a radial direction perpendicular to the axis is greater than a width of the abutting wall in the radial direction.

6. The lid of the container combination according to claim 1, characterized in that:

10. A container assembly, 7. The lid of the container combination according to claim 1, characterized in that: ​ 8. The lid of the container combination according to claim 1, characterized in that: ​ 9. The lid of the container combination according to claim 8, characterized in that: ​ ​ characterized in that The container assembly comprises a plurality of the cover according to claim 8 and a plurality of the container. Each of the cover is detachably connected to the mouth of the corresponding container and defines a containing space with the corresponding container, the cover is stackable along the direction of the axis, and when the cover is stacked, the abutting wall of one of the cover abuts against the stop protrusion of the adjacent cover, and the cover, the abutting wall and the inner side wall of each of the cover are spaced apart from the cover, the abutting wall and the inner side wall of the adjacent cover, respectively.

11. The container combination of claim 10, wherein: The surrounding portion has a small-diameter section connected to the bottom, a large-diameter section connected to the mouth, and an abutting section connected to the large-diameter section and the small-diameter section, and the width of the small-diameter section along a radial width direction perpendicular to the axis is smaller than the width of the large-diameter section along the radial width direction.

12. A container combination, characterized in that The container assembly comprises the cover and the container according to any one of claims 1-9.

13. The container combination of claim 12, wherein: The container further comprises a bottom, and a surrounding portion extending from the periphery of the bottom along the direction of the axis and connected to the mouth, the mouth has an inner ring wall connected to one end of the surrounding portion opposite to the bottom, an outer ring wall surrounding the axis and spaced apart from the inner ring wall, and a top wall connected to the inner ring wall and the outer ring wall and having a positional difference with the bottom along the direction of the axis, the top wall, the inner ring wall and the outer ring wall define an annular space with an opening opposite to the top wall, the outer side wall of the cover surrounds the outer ring wall of the container, and the stop protrusion is forced against the outer ring wall, so that the outer ring wall is depressed into the gap and frictionally contacts the outer side wall and the stop protrusion, the connecting portion further comprises an inner side wall surrounding the axis and spaced apart from the outer side wall, and an abutting wall connected to the inner side wall and the outer side wall and having a positional difference with the cover along the direction of the axis, the inner side wall of the cover is forced against the inner ring wall of the container, and the abutting wall of the cover is forced against the top wall of the container.

14. The container combination of claim 12, wherein: The surrounding portion has a small-diameter section connected to the bottom, a large-diameter section connected to the mouth, and an abutting section connected to the large-diameter section and the small-diameter section, and the width of the small-diameter section along a radial width direction perpendicular to the axis is smaller than the width of the large-diameter section along the radial width direction. The surrounding portion has a small-diameter section connected to the bottom, a large-diameter section connected to the mouth, and an abutting section connected to the large-diameter section and the small-diameter section, and the width of the small-diameter section along a radial width direction perpendicular to the axis is smaller than the width of the large-diameter section along the radial width direction.

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