A lid assembly

Abstract

The present invention relates to a lid assembly for a container, the lid assembly comprising a base portion adapted to be coupled to an opening of the container, a cover pivotally connected to the base portion and switchable between a first position to cover a top surface of the base portion and a second position to cover a top surface of the base portion, the second position is away from the top surface of the base portion; a nozzle removably mounted to the base portion, the nozzle comprising a deformable section, where the lid assembly comprises a vent mechanism and deformation of the deformable section causes the vent mechanism to switch between an open configuration enabling fluid communication between the interior of the container and the atmosphere and a closed configuration enabling fluid communication between the interior of the container and the atmosphere. The closed configuration disables fluid communication between the interior of the container and the atmosphere.

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202580005633.8 (22) Application Date 2025.10.03 (30) Priority Data 63 / 714,150 2024.10.31 US (85) PCT International Application Entering National Phase Date 2026.04.27 (86) PCT International Application Application Data PCT / IB2025 / 059976 2025.10.03 (87) PCT International Application Publication Data WO2026 / 093828 EN 2026.05.07 (71) Applicant: Agilent Global Resources (Hong Kong) Limited Address: 12 / F, Elion Commercial Building, 3 Connaught Road West, Hong Kong, China (72) Inventors: Huang Shaohua, Guo Faxin, Pan Shunsheng (74) Patent Agency: Shanghai Yiping Intellectual Property Agency Co., Ltd. 31266 Patent Attorneys: Cheng Chunrong, Zhu Yun (51) Int.Cl. B65D 47 / 08 (2006.01) A47G 19 / 22 (2006.01) (54) Title of Invention: Cover Assembly (57) Abstract This invention relates to a cover assembly for a container, the cover assembly comprising a base portion adapted to be coupled to an opening of the container; a cover pivotally connected to the base portion and switchable between a first position and a second position, wherein the first position covers a top surface of the base portion, and the second position is away from the top surface of the base portion; a nozzle detachably mounted to the base portion, the nozzle including a deformable section, wherein the cover assembly includes a venting mechanism and deformation of the deformable section causes the venting mechanism to switch between an open configuration and a closed configuration, wherein the open configuration allows fluid communication between the interior of the container and the atmosphere, and the closed configuration prevents fluid communication between the interior of the container and the atmosphere. Claims 1 page, Description 8 pages, Drawings 28 pages, CN 122319109 A 2026.06.30 CN 1 22 31 91 09 A 1. A lid assembly for a container, the lid assembly comprising: - a base portion adapted to be coupled to an opening of the container; - a cover pivotally connected to the base portion and switchable between the first position and the second position, wherein the first position covers a top surface of the base portion, and the second position is disposed away from the top surface of the base portion; - a nozzle detachably mounted to the base portion, the nozzle including a deformable section; wherein the lid assembly includes a venting mechanism and deformation of the deformable section causes the venting mechanism to open the container.1. Switching between an open and closed configuration, wherein the open configuration allows fluid communication between the interior of the container and the atmosphere, and the closed configuration prevents fluid communication between the interior of the container and the atmosphere. 2. The cap assembly of claim 1, wherein the venting mechanism comprises: - an air vent disposed at the base portion, and - a sealing portion defined by at least a portion of the nozzle for sealing the air vent in the closed configuration. 3. The cap assembly of claim 2, wherein the profile of the base portion is configured to provide a receptacle; the air vent is disposed at the receptacle. 4. The cap assembly of claim 3, wherein the profile of the receptacle is configured to allow the nozzle to be removably received in the receptacle, defining an upper portion and a lower portion of the nozzle, wherein the upper portion of the nozzle is adapted and movably received in the receptacle, and the lower portion of the nozzle extends outwardly beyond the bottom of the receptacle. 5. The cap assembly of claim 4, wherein the receptacle includes a surrounding wall, the air vent is disposed at the surrounding wall, and the sealing portion is defined by at least a portion of the upper portion of the nozzle. 6. The cover assembly of claim 5, wherein the peripheral wall comprises a peripheral wall and a bottom wall, and the vent is disposed at the peripheral wall and / or the bottom wall. 7. The cover assembly of claim 6, wherein the upper portion of the nozzle includes the deformable section. 8. The cover assembly of claim 7, wherein the deformable section has a straight, V-shaped, C-shaped, S-shaped, or W-shaped side profile. 9. The cover assembly of claim 7, wherein at least the deformable section of the nozzle is made of an elastic or tough material. 10. The cover assembly of claim 7, wherein the nozzle is integrally formed of an elastic or tough material. 11. The cover assembly of claim 7, wherein the sealing portion is defined by at least a portion of the deformable section, and the vent is disposed at the bottom wall. 12. The cover assembly of claim 11, wherein the nozzle further includes a shoulder portion between the deformable section and the lower portion, the shoulder portion being positioned in the socket and having a through-hole at the shoulder portion, the position of the through-hole overlapping the position of the vent. 13. The cap assembly according to claim 12, wherein the bottom wall includes a hollow through-hole collar, the hollow through-hole collar standing upright from the vent and extending beyond the through-hole of the shoulder portion, wherein the positions of the hollow through-hole portion of the hollow through-hole collar, the positions of the vent at the bottom wall, and the positions of the through-hole at the shoulder portion overlap. Claims 1 / 1 page 2 CN 122319109 A Cap Assembly Technical Field

[0001] This invention relates to the field of drinking containers. In particular, this invention relates to a cap assembly for a container, comprising...Deformable nozzles, whose deformation can affect the flow of liquid through the nozzle in a container and regulate the air pressure between the container's interior and the atmosphere. Background Art

[0002] Traditional drinking containers typically rely on separate valves or other mechanisms to allow fluid flow and prevent leakage. For example, containers with straws or nozzles often use an air valve combined with a seal to block fluid flow through their cap. However, this design introduces multiple components, increasing manufacturing complexity, cost, and cleaning difficulty. Furthermore, improper sealing or valve fatigue can lead to leaks or unstable fluid flow, thus affecting the drinking experience.

[0003] Some existing solutions integrate deformable nozzles into the container to reduce the number of parts, but these solutions often fail to address both fluid flow control and air pressure regulation simultaneously. For example, a deformable nozzle itself restricts liquid flow but lacks an integrated air valve. Other solutions incorporate air vents but require auxiliary seals.

[0004] Therefore, there is a need for a cap assembly for a container that includes a deformable nozzle that: simplifies the assembly, disassembly, and cleaning of the cap assembly by eliminating separate parts (such as valves), provides reliable fluid flow control through nozzle deformation, and regulates air pressure by integrating vents that are sealed / opened by the same nozzle deformation.

[0005] The object of the present invention is to provide a cap assembly that solves the above-mentioned technical problems, or at least to provide the public with an alternative.

[0006] According to a first aspect of the invention, embodiments of this disclosure provide a lid assembly for a container, the lid assembly comprising: - a base portion adapted to be coupled to an opening of the container; - a cover pivotally connected to the base portion and switchable between a first position and a second position, wherein the first position covers a top surface of the base portion, and the second position is located away from the top surface of the base portion; - a nozzle detachably mounted to the base portion, the nozzle including a deformable section; wherein the lid assembly includes a venting mechanism and deformation of the deformable section causes the venting mechanism to switch between an open configuration and a closed configuration, wherein the open configuration allows fluid communication between the interior of the container and the atmosphere, and the closed configuration prevents fluid communication between the interior of the container and the atmosphere. The venting mechanism is switchable with deformation of the deformable section, which is particularly advantageous for providing reliable fluid control by simplifying the structure of the lid assembly.

[0007] Further, the venting mechanism includes: - an air vent disposed at the base portion, and - a sealing portion defined by at least a portion of the nozzle for sealing the air vent in the closed configuration. Specification 1 / 8 page 3 CN 122319109 A

[0008] Further, the profile of the base portion is configured to provide a socket; the air vent is disposed at the socket.

[0009] Further, the profile of the socket is configured to allow the nozzle to be detachably received in the socket, defining an upper portion and a lower portion of the nozzle, wherein the upper portion of the nozzle is adaptively and movably received in the socket, and the lower portion of the nozzle extends outward beyond the bottom of the socket.

[0010] Further, the socket includes a peripheral wall, the vent is disposed on the peripheral wall, and the sealing portion is defined by at least a portion of the upper portion of the nozzle.

[0011] Further, the peripheral wall includes a peripheral wall and a bottom wall, and the vent is disposed on the peripheral wall and / or the bottom wall.

[0012] Further, the upper portion of the nozzle includes the deformable section.

[0013] Further, the deformable section has a V-shaped, C-shaped, S-shaped, or W-shaped side profile, or even a straight profile. Preferably, the deformable section has a V-shaped side profile.

[0014] Further, at least the deformable section of the nozzle is made of an elastic or tough material, such as liquid silicone rubber or silicone. The elastic or tough properties of the material are important for achieving deformation. The choice of material can vary depending on the actual requirements and there can be more than one material.

[0015] Further, the nozzle is integrally formed of an elastic or tough material, which is beneficial for the manufacture of the nozzle. For example, the nozzle is made by injection molding or overmolding.

[0016] Further, the sealing portion is defined by at least a portion of the deformable section, and the vent is arranged at the bottom wall.

[0017] Further, the nozzle further includes a shoulder portion between the deformable section and the lower portion, the shoulder portion being positioned in the socket and having a through hole at the shoulder portion, the position of the through hole overlapping the position of the vent.

[0018] Further, the bottom wall includes a hollow through-hole collar, the hollow through-hole collar standing upright from the vent and extending beyond the through-hole of the shoulder portion, wherein the positions of the hollow through-hole portion of the hollow through-hole collar, the positions of the vent at the bottom wall, and the positions of the through-hole at the shoulder portion overlap. The hollow through-hole collar has the advantage of ensuring airflow through the vent in the open position and reliable sealing of the vent in the closed position.

[0019] The cap assembly disclosed according to the present invention has the following advantages: simplifying the assembly, disassembly, and cleaning of the cap assembly by eliminating separate parts (such as valves), achieving reliable fluid flow control through nozzle deformation, and regulating air pressure by integrating vents sealed / opened by the same nozzle deformation. Brief Description of the Drawings

[0020] Some embodiments of the present disclosure will now be explained with reference to the accompanying drawings, in which: FIG1 shows an exploded view of a container according to a first embodiment of the present invention.

[0021] Figure 2a shows a perspective view of the container in Figure 1, with the lid assembly in a second position.

[0022] Figure 2b shows a cross-sectional view of the lid assembly in Figure 2a along line A-A.

[0023] Figure 3a shows a perspective view of the container in Figure 1, with the lid assembly in a first position.

[0024] Figure 3b shows a cross-sectional view of the lid assembly in Figure 3a along line A-A. Specification 2 / 8 pages 4 CN 122319109 A

[0025] Figure 4a shows a top view of the base portion according to the first embodiment.

[0026] Figure 4b shows a bottom view of the base portion according to the first embodiment.

[0027] Figure 5a shows a perspective view of the nozzle according to the first embodiment.

[0028] Figure 5b shows a cross-sectional view of the nozzle in Figure 5a along line A-A.

[0029] Figure 6a shows a cross-sectional view of the lid assembly according to the second embodiment in its second position.

[0030] Figure 6b shows a cross-sectional view of the lid assembly in Figure 6a in its first position.

[0031] FIG. 7a shows a cross-sectional view of the cover assembly in its second position according to the third embodiment.

[0032] FIG. 7b shows a cross-sectional view of the cover assembly in its first position according to FIG. 7a.

[0033] FIG. 8a shows a perspective top view of the base portion according to the third embodiment.

[0034] FIG. 8b shows a perspective bottom view of the base portion according to the third embodiment.

[0035] FIG. 9a shows a perspective view of the nozzle according to the third embodiment.

[0036] FIG. 9b shows a cross-sectional view of the nozzle along line B-B in FIG. 9a.

[0037] FIG. 10 shows an exploded view of the container according to the fourth embodiment of the present invention.

[0038] FIG. 11a shows a cross-sectional perspective view of the base portion according to the fourth embodiment.

[0039] FIG. 11b-11c show the base portion according to the fourth embodiment in different views.

[0040] FIG. 12a-12c show the nozzle according to the fourth embodiment in different views.

[0041] FIG. 13a-13c show the umbrella valve according to the fourth embodiment in different views.

[0042] FIG14a shows a top perspective view of the container according to the fourth embodiment.

[0043] FIG14b shows a cross-sectional view of the container along line B-B in FIG14a.

[0044] FIG14c is a cross-sectional view of the container along line B'-B' in FIG14a.

[0045] FIG15a shows a cross-sectional view of the container along line B'-B' in FIG14a, with the nozzle in the open position.

[0046] FIG15b shows a cross-sectional view of the container along line B'-B' in FIG14a, with the nozzle in the closed position.

[0047] FIG16 shows an exploded view of the container according to the fifth embodiment.

[0048] FIG17a shows a perspective top view of the cover according to the fifth embodiment.

[0049] FIG17b shows a perspective bottom view of the cover according to the fifth embodiment.

[0050] FIG18a shows a perspective top view of the base portion according to the fifth embodiment.

[0051] FIG18b shows a perspective bottom view of the base portion according to the fifth embodiment.

[0052] FIG19a shows a perspective view of the container according to the fifth embodiment.

[0053] FIG19b shows a cross-sectional view of the container along line C-C in FIG19a, with the cover assembly in a second position.

[0054] FIG20a shows a cross-sectional view of the container along line C-C in FIG19a, with the cover assembly in a first position.

[0055] FIG20b shows an enlarged view of the cover assembly in FIG20a. Detailed Description

[0056] FIG1-5b illustrate a first embodiment of the present disclosure.

[0057] FIG1 shows an exploded view of a container 10, including a cover assembly 20 coupled to an opening of the container 10. The cover assembly 20 includes a base portion 21, a cover 24 covering the top surface of the base portion 21, and a nozzle 30.

[0058] FIG2a is a perspective view of the container 10 in its assembled state, while FIG2b shows a cross-sectional view of the cover assembly along line A-A in FIG2a. The dimensions and profile of the base portion 21 are configured to provide a socket 211 in which the nozzle 30 is removably received. The socket 211, defined by the bottom wall 213 and the peripheral wall 50, is provided to receive the nozzle 30 such that the upper portion of the nozzle 30 is adapted and movably received in the socket 211, and the lower portion 35 of the nozzle 30 extends outward beyond the bottom of the socket. The upper portion includes a top portion 33 and a deformable segment 34. Furthermore, the nozzle 30 further includes a shoulder 37 projecting from the outer wall of the nozzle 30, the shoulder 37 defining the deformable segment 34 and the lower portion 35, and the shoulder 37 rests on the bottom wall 213 when the nozzle 30 is assembled to the socket 211. In this embodiment, an air vent 212 allowing fluid communication between the interior of container 10 and the atmosphere is provided at the bottom wall 213. Furthermore, a hollow, through-hole collar 214 stands upright in the air vent 212 and extends beyond the shoulder 37. The opening and closing of the air vent 212 is controlled by the deformation of the nozzle 30, which will be discussed in detail below.

[0059] Referring now to Figures 3a and 3b, the profile of the top portion 33 substantially matches the inner profile of the socket 211. The lower portion 35 extends downward toward the bottom of container 10. In another embodiment, the lower portion 35 is connected to an extended suction tube (not shown) extending to the bottom of container 10. The nozzle 30 is configured to present between an open position and a closed position. The expression "open position of the nozzle" means that fluid in the container flows freely through the nozzle 30. Conversely, the expression "closed position of the nozzle" means that fluid flowing through the nozzle 30 in the container is restricted or deactivated. In this embodiment, the deformable section 34 has a V-shape.Longitudinal section. In other embodiments, the deformable section 34 may have an I-shaped, W-shaped, C-shaped, or any other suitable longitudinal section, which is not limited herein. The spirit of the deformable section 34 is that it is adapted to present a first configuration under pressure and a second configuration when the pressure is removed. The deformable section 34 is configured to provide repeatable deformation, wherein when the nozzle 30 presents its closed position, its outer wall reliably abuts against the collar 214, thereby sealing the vent 212. The deformable section 34 is preferably made of an elastic and / or tough material, so that it is deformable in its longitudinal direction, as shown in Figures 2b and 3b. In Figure 2b, the deformable section 34 is in the open position. In Figure 3b, the deformable section 34 is in the closed position. Advantageously, the nozzle 30 is made of an elastic and / or tough material, such as silicone plastic, and is integrally molded to facilitate its assembly to the cap assembly 20. The integral nozzle 30 also allows for easier cleaning because it is easy to remove from the cap assembly 20. Advantageously, the base portion 21 is also integrally formed to facilitate assembly into the container. Figures 2b and 3b show the open and closed positions of the nozzle 30 in cross-sectional views, respectively.

[0060] Figures 4a and 4b show the top and bottom views of the base portion 20, respectively. As can be seen, an air hole 212 is provided on the bottom wall 213 of the socket 211.

[0061] As shown in Figures 5a and 5b, a through hole 36 is arranged on the shoulder 37, which allows the collar 214 to pass through when the nozzle 30 is assembled into the socket 211. In other embodiments, a duckbill valve is provided at the through hole 36, preferably at its bottom and with its lip pointing downwards, to prevent leakage of liquid contained in the container when the nozzle 30 is in its open position.

[0062] In operation, once the cover 24 engages the nozzle 30, particularly when the cover 24 is pressed against the top portion 33 of the nozzle 30, the top portion 33 of the nozzle 30 can descend in the socket 211 to reach a closed position due to the deformation of the deformable section 34 to be folded or compressed. In the closed position, on the one hand, the inner wall 342 (see FIG. 2b) of the deformable section 34 folds or compresses, thereby blocking the fluid communication of liquid in the container, thus restricting or prohibiting fluid flow through the deformable section 34; on the other hand, the outer wall 341 of the deformable section 34 seals the vent 212 by abutting against the collar 214. The nozzle 30 in its closed position ideally prevents liquid from escaping through the nozzle 30. It should be understood that the deformation of the deformable section 34 as explained above provides an airtight effect for the container and acts as a sealing part, thereby reducing the need for the use of a separate air valve.

[0063] It should be understood that the vents arranged at the base portion and the sealing portion defined by at least a portion of the nozzle together define the venting mechanism of the cover assembly. It should also be understood that deformation of the deformable section causes the venting mechanism to change between open and closed configurations.The container can switch between closed and open configurations, where the open configuration allows fluid communication (i.e., air and / or liquid) between the interior of the container and the atmosphere, and the closed configuration prevents fluid communication between the interior of the container and the atmosphere. The venting mechanism is switchable as the deformable section deforms, which is particularly advantageous for providing reliable fluid control by simplifying the structure of the cap assembly.

[0064] When the cover 24 is opened, the cover 24 disengages from the nozzle 30, particularly from the top portion 33 of the nozzle 30. Due to the elastic and / or toughness of the deformable section 34, the deformable section 34 will return to its original shape, i.e., upright. Therefore, the outer wall 341 of the deformable section 34 no longer blocks the vent 212. And thus, in the open position, thanks to the opening of the vent 212, the user can drink smoothly without creating bubbles in the liquid within the container 10. In some embodiments, the position of the vent 212 may vary, and its sealing may be achieved by other portions of the nozzle 30, which will be discussed below.

[0065] Figures 6a and 6b show a second embodiment of the cover assembly. For simplicity, only the structure different from the first embodiment is shown. In particular, in this embodiment, the vent 212' is arranged on the peripheral wall of the socket 211. In this case, the sealing of the vent 212 is achieved by the sidewall of the top portion 33 acting as a sealing portion. In other embodiments, more than one vent may be arranged on the peripheral wall of the socket. The vent 212' in the second embodiment may also be combined with the vent 212 in the first embodiment to achieve optimal air conditioning, which matches their sealing portions as described in the first and second embodiments. It should be understood that the spirit of this disclosure lies in the deformation of the nozzle, which can affect the liquid in the container through the nozzle and regulate the air pressure between the interior of the container and the atmosphere.

[0066] Figures 7a to 9b show a third embodiment of the cover assembly.

[0067] As shown in Figures 7a and 7b, the socket 211 includes a guide protrusion 29 in the form of a stepped protrusion projecting inward from the peripheral wall of the socket 211, wherein the vent 212'' is arranged at the guide protrusion 29. Preferably, the vent 212'' is oriented toward the top portion 33. Furthermore, the top portion 33 of the nozzle 30 has a recess 39 with a shape complementary to the guide protrusion 29 and faces the guide protrusion 29 when the nozzle 30 is assembled into the socket 211. The complementary engagement between the guide protrusion 29 and the recess 39 allows the top portion 33 to move vertically within the socket 211 and provides sufficient space for the deformable section 34 to present its open and closed positions. To achieve a seal for the vent 212'', a stop 331 pointing toward the vent 212'' is arranged at the recess 39. The guide protrusion 29 includes a horizontal wall and a vertical wall substantially perpendicular to the horizontal wall. And, the vent 212'' is preferably arranged...The stop 331 is positioned at the horizontal wall to better engage with it, thereby achieving a better sealing effect. The arrangement and configuration of the stop 331 and the vent 212' in Figures 7a-7b are advantageously preferred because the engagement and sealing effect between these components is optimal. Based on the above description, it should be understood that the embodiments in Figures 7a-7b can also be configured to include any one or two of the ventilation mechanisms described in Figures 1-6b.

[0068] Referring now to Figures 8a and 8b, they show the base portion 21 in this embodiment. Specifically, Figure 8b shows a bottom view of the base portion 21, in which the guide protrusion 29 is recessed into the socket 211. Accordingly, the bottom wall 213 of the socket is also adapted to the guide protrusion 29, i.e., the bottom wall 213 has a V-shaped cutout. In other embodiments, the shape of the guide protrusion 29 may vary, and is not limited here.

[0069] As shown in Figures 9a and 9b, the shoulder 37 includes a cutout 38 for adapting to the shape of the guide protrusion 29. The cutout 38 shown in FIG9a is a straight cutout; in other embodiments, the cutout 38 may be V-shaped or any other shape complementary to the profile of the vertical wall of the guide protrusion 29. The stop 331 is substantially spherical in shape; however, in other embodiments, the stop 331 may have a frustoconical shape or any other shape that allows the vent 212'' to be sealed, without limitation herein.

[0070] FIG2a and 3a further illustrate a mechanism for holding the cover 24 on the base portion 21. In particular, the cover 24 pivots about the hinge of the hinge mechanism 25 to releasably cover the base portion 21. The manner in which the cover 24 covers is not limited herein. In some embodiments, the cover 24 engages the base portion 21 as a screw cap. The base portion 21 further includes a first semi-flange 210 projecting from the outer side wall of the base portion 21, and the cover 24 at a corresponding location includes a second semi-flange 241 projecting from the outer side wall of the cover 24. The first semi-flange 210 and the second semi-flange 241 together define a space for receiving the latch 23, which is movable between a free position and a locked position. Further, an elastic element, such as a spring (not shown), is provided between the latch 23 and the base portion 21 to maintain the locked position. The corresponding structures of the latch 23 and the first and second semi-flanges 210 and 241 are merely exemplary. It should be understood that any other suitable mechanism for retaining the cover 24 on the base portion 21 can be used in other embodiments. Advantageously, a latch ring 22 is disposed at the lower part of the first semi-flange 210 and pivotally connected to it. The latch ring 22 is sized to surround both the first semi-flange 210 and the second semi-flange 241 when the cover 24 is closed. In the locked position, the latch ring 22 pivots upward until it surrounds the first semi-flange 210.Both flange 210 and the second half-flange 241 ensure locking and prevent accidental opening of the cover 24. Preferably, the hinge mechanism 25 includes a spring member configured to bias when the cover 24 engages with the base portion 21 and spring back when the cover 24 disengages from the base portion to facilitate opening the cover 24. It should be understood that the locking method is not limited herein, and any other suitable locking method known in the art may be used.

[0071] Furthermore, in the embodiment shown in FIG. 3b, in the closed position of the nozzle, the orifice of the top portion 33 is in close contact with the lower surface of the cover 24. This configuration provides a tight seal of the top portion 33. Therefore, the leak-proof effect is even improved. In this embodiment, the top portion 33 has a flat shape, and the cover 24 has a protruding surface 26 corresponding to the shape of the top portion 33. This configuration allows the top portion 33 to be received in its closed position. It should be understood that the protruding surface 26 is optional, and its shape can be changed to accommodate the shape of the top portion 33.

[0072] Figures 10-15b illustrate a fourth embodiment of the present disclosure. In the fourth embodiment, components identical to those in the foregoing embodiments are indicated by the same reference numerals, and therefore will not be described again below.

[0073] Figure 10 shows an exploded view of a container 10 according to the fourth embodiment. One difference between the fourth and foregoing embodiments is that an umbrella valve 27 is provided in the fourth embodiment to allow the interior of the container 10 to communicate with the atmosphere, instead of the vent 212 provided in the foregoing embodiments. Another difference between the foregoing and fourth embodiments lies in the structure of the nozzle 30 and the socket 211.

[0074] Figures 11a-11c show the detailed structure of the base portion 21. Referring now to Figure 11a, which shows a cross-sectional view, the socket 211 is defined by its peripheral wall 50, and a guide protrusion 29 protrudes inwardly from the peripheral wall 50 into the internal volume 51 of the socket 211. Preferably, the longitudinal direction of the guide protrusion 29 is substantially parallel to the axial direction of the socket 211. However, when viewed from the outside, for example in Figures 11b and 11c showing the bottom view of the base portion 21, a guide recess 29a is formed on the peripheral wall 50 of the socket 211. The shape of the guide protrusion 29 can vary and is not limited here. Furthermore, as shown in Figures 11b and 11c, a mounting hole 216 is provided on the base portion through which the umbrella valve 27 is mounted. Also, a plurality of vent holes 215 (preferably four) are circumferentially and evenly distributed around the mounting hole 216.

[0075] Referring to Figures 12a to 12c, they show the detailed structure of the nozzle 30, in which, in this embodiment, the shoulder 37 includes a cutout 38, and on the same side of the cutout 38, the top portion 33 includes a recess 39. Both the cutout 38 and the recess 39 mate with the guide protrusion 29 to facilitate mounting the nozzle 30 into the socket 211 and to guide the top portion 33 within the socket 211.The movement, which will be further described below, is also described. It is worth noting that the guide protrusion 29 and the notch 39 are merely advantageous preferred features, but not essential features for implementing the invention.

[0076] The umbrella valve 27, shown in detail in Figures 13a to 13c, is a one-way valve for preventing backflow. The umbrella valve 27 includes a central rod 271 extending from the bottom side of the base portion 21 into a mounting hole 216 and a resilient disc-shaped diaphragm 272. Preferably, the end of the central rod 271 has a protrusion 273, the diameter of which is larger than the diameter of the mounting hole 216, for engaging the mounting hole 216. Preferably, the umbrella valve 27 is a one-piece structure made of a resilient material (e.g., silicone plastic). Figures 14a and 14b show the umbrella valve 27 after it has been mounted on the base portion 21, wherein Figure 14b is a cross-sectional view of the container along line B-B in Figure 14a. As can be seen, the center rod 271 is inserted into and held in the mounting hole 216, and the diaphragm 272 covers all the vent holes 215.

[0077] Similar to the previous embodiment, the opening and closing of the cover 24 causes the deformable section 34 of the nozzle 30 to deform, thereby affecting the flow of liquid in the container through the nozzle. However, in the fourth embodiment, the air pressure regulation between the interior of the container 10 and the atmosphere is achieved in a unidirectional manner. When the user drinks the liquid in the container, the decrease in pressure inside the container causes the umbrella valve 27 to open (i.e., the diaphragm 272 deforms and exposes the vent holes 215), allowing air to enter the container to form a pressure balance between the interior of the container and the atmosphere. When the umbrella valve 27 is closed, the multiple vent holes 215 are completely covered by the diaphragm 272 to restrict fluid communication through the vent holes 215. Thanks to its one-way restraint, the umbrella valve 27 prevents liquid leakage even when the cover 24 is open and the nozzle 30 is in its open position, which is particularly beneficial for children who may tip the container over during use.

[0078] The fit between the cutout 38 and the guide protrusion 29 is shown in FIG14c, which is a cross-sectional view along line B'-B' in FIG14a. This fit is performed such that when the nozzle 30 is installed from the top of the socket 211 into the socket 211, the cutout 38 faces the guide protrusion 29. After the lower portion 35 of the nozzle 30 passes through the lower portion of the socket 211, the shoulder 37 is located on the bottom wall 213 and the cutout 38 is adapted to the guide protrusion 29. The presence of the cutout 38 helps the user to position the nozzle 30 in the socket 211, thereby facilitating the installation of the nozzle 30.

[0079] Furthermore, the fit between the notch 39 and the guide protrusion 29 is shown in Figures 15a and 15b. This fit is performed in such a way that when the cover 24 is closed, the cover 24 engages the nozzle 30 and presses against the top portion 33 of the nozzle 30.The portion 33 descends in the socket 211, which causes the notch 39 to engage with the guide protrusion 29, thereby allowing the top portion 33 to move along the longitudinal direction of the guide protrusion 29 (i.e., the axial direction of the socket 221). The engagement between the notch 39 and the guide protrusion 29 guides the top portion 33 to move in a straight line. It can be understood that when the cover 24 is reopened, the engagement between the notch 39 and the guide protrusion 29 occurs in the opposite manner.

[0080] Considering the horizontal displacement of the deformable segment 34 due to its deformation, as shown in Figures 15a and 15b, the cutout 38, the notch 39, and the guide protrusion 29 are advantageously positioned on opposite sides of the bend of the deformable segment 33 to allow sufficient space for the displacement of the deformable segment 35.

[0081] Furthermore, other components of the cover assembly, as shown in Figure 16, for example, include two torsion springs 252 between the cover 24 and the base portion 21 to facilitate the release of the cover 24. However, these torsion springs 252 are optional and facilitate the release of the cover 24. It should be understood that the release of the cover 24 can be achieved solely by deformation of the nozzle 30, particularly by the elasticity of the nozzle 30. Furthermore, the following components are shown: a hinge pin 251 for pivotally connecting the cover 24 and the base portion 21; a spring 221 disposed between the snap 23 and the first semi-flange 210; a pivot pin 2101 connecting the snap 23 and the first semi-flange 210; and an extension suction tube 40 mounted on the lower portion 35 of the nozzle. These components may also be applied in other embodiments. It should be understood that these components are known in the art, and their structure, location, number, and material should not be construed as limiting the present disclosure. Furthermore, the relationships between the components and the operation of the components are self-evident in these figures.

[0082] Figures 16 to 20b illustrate a fifth embodiment of the present disclosure. In this embodiment, the same components as those in the preceding embodiments are indicated by the same reference numerals, and therefore will not be described again below.

[0083] FIG16 shows an exploded view of the container 10 according to the fifth embodiment. One of the differences between the first to third embodiments and the fifth embodiment is that a stop valve is provided to allow the interior of the container 10 to communicate with the atmosphere, instead of an air vent 212. In this embodiment, the nozzle 30 and the socket 211 have the same structure as described in the fourth embodiment, i.e., the cutout 38 and the notch 39 respectively mate with the guide protrusion 29, and their mating will not be fully described below.

[0084] Referring to FIG17a and 17b, which respectively show a perspective top view and a bottom view of the cover 24 in the fifth embodiment, in which the sealing plug 243 protrudes substantially vertically from the bottom side of the cover 24. The sealing plug 243 is made of plastic material and is preferably integrally formed with the cover 24. In this embodiment, the sealing plug 243 has a cylindrical shape. FIG18a andFigure 18b shows a perspective top and bottom view of the base portion 21, on which a perforation 217 is formed for receiving the tube member 28 (shown in Figure 20b). A protruding ring 219 protrudes inward from the inner wall of the perforation 217 to position the tube member 28.

[0085] More specifically, referring to Figures 20a and 20b, which are cross-sectional views along line C-C in Figure 19a when the cover 24 is closed, the plug valve includes a sealing plug 243 and a tube member 28. The sealing plug 243 has a sufficient length to abut against the tube member 28 when the cover 24 is closed. Preferably, the outer wall of the tube member 28 has a circumferential recess for engaging the protruding ring 219 so that the tube member 28 is placed within the perforation 217. The tube member 28 includes two ends, and at least the end intended to contact the sealing plug 243 is made of a resilient material. Preferably, the entire tube member 28 is made of an elastic material. In this embodiment, the tube member 28 has a wall of a certain thickness, and therefore it has an inner diameter and an outer diameter. The diameter of the sealing plug 243 is larger than the inner diameter of the tube member 28 but smaller than the outer diameter of the tube member 28, such that the end of the sealing plug 243 abuts only against the elastic material of the tube member 28 to achieve a seamless seal.

[0086] In the fifth embodiment, the air pressure regulation between the interior of the container 10 and the atmosphere is achieved by a plug valve. The opening and closing of the plug valve is controlled by the opening and closing of the cover 24. When the cover 24 is open, there is no blockage at the tube member 28, and the air pressure between the interior of the container and the atmosphere is substantially equal. When the cover 24 is closed, on the one hand, the cover 24 presses against the nozzle 30 to cause deformation of the deformable section 34 of the nozzle 30, thereby restricting fluid flow through the deformable section 34; on the other hand, the end of the sealing plug 243 abuts against the top portion of the tube member 28 to block the fluid communication between the interior of the container and the atmosphere.

[0087] Alternatively, in some embodiments, the tube member 28 is not provided. Instead, the end of the sealing plug 243 is made of a resilient material and has a hemispherical shape and a diameter larger than that of the perforation 217, for sealing between the plug 243 and the perforation 217.

[0088] The foregoing should not be construed as being limited only to the examples or drawings. However, it should be clearly understood that such modifications and adaptations are within the scope of the disclosure in this regard. For example, features shown or described as part of one embodiment may be used in another embodiment to produce further embodiments. Therefore, this disclosure is intended to cover these modifications and variations and their equivalents. The material, shape, and size of the container and the cap should not be a limiting feature of this disclosure. Specification 8 / 8 pages 10 CN 122319109 A Figure 1 Specification Drawings 1 / 28 pages 11 CN 122319109 A Figure 2a Specification Drawings 2 / 28 pages 12 CN122319109 A Figure 2b Figure 3a Instruction Manual Appendix 3 / 28 Page 13 CN 122319109 A Figure 3b Figure 4a Instruction Manual Appendix 4 / 28 Page 14 CN 122319109 A Figure 4b Figure 5a Instruction Manual Appendix 5 / 28 Page 15 CN 122319109 A Figure 5b Figure 6a Instruction Manual Appendix 6 / 28 Page 16 CN 122319109 A Figure 6b Figure 7a Instruction Manual Appendix 7 / 28 Page 17 CN 122319109 A Figure 7b Figure 8a Instruction Manual Appendix 8 / 28 Page 18 CN 122319109 A Figure 8b Instruction Manual Appendix 9 / 28 Page 19 CN 122319109 A Figure 9a Instruction Manual Appendix 10 / 28 Page 20 CN 122319109 A Figure 9b Instruction Manual Appendix 11 / 28 Page 21 CN Figure 10 of the instruction manual, page 12 / 28, CN 122319109 A; Figure 11a and Figure 11b of the instruction manual, page 13 / 28, CN 122319109 A; Figure 11c of the instruction manual, page 14 / 28, CN 122319109 A; Figure 12a of the instruction manual, page 15 / 28, CN 122319109 A; Figure 12b of the instruction manual, page 16 / 28, CN 122319109 A; Figure 12c of the instruction manual, page 17 / 28, CN 122319109 A; Figure 13b and Figure 13c of the instruction manual, page 18 / 28, CN 122319109 A; Figure 14a of the instruction manual, page 19 / 28, CN 122319109 A; Figure 14b of the instruction manual. Instruction manual figures 20 / 28, page 30, CN 122319109 A, Figure 14c; Instruction manual figures 21 / 28, page 31, CN 122319109 A, Figure 15a, Figure 15b; Instruction manual figures 22 / 28, page 32, CN 122319109 A, Figure 16; Instruction manual figures 23 / 28, page 33, CN 122319109 A, Figure 17a, Figure 17b; Instruction manual figures 24 / 28, page 34, CN 122319109 A, Figure 18a, Figure 18b; Instruction manual figures.Pages 25 / 28, 35 CN 122319109 A, Figure 19a (Instruction Manual Drawing); Pages 26 / 28, 36 CN 122319109 A, Figure 19b (Instruction Manual Drawing); Pages 27 / 28, 37 CN 122319109 A, Figure 20a, Figure 20b (Instruction Manual Drawing); Pages 28 / 28, 38 CN 122319109 A

Claims

1. A lid assembly for a container, the lid assembly comprising: - A base portion adapted to be coupled to the opening of the container. - A cover that is pivotally connected to the base portion and is switchable between a first position and a second position, wherein the first position is to cover the top surface of the base portion and the second position is to be away from the top surface of the base portion; - A nozzle detachably mounted to the base portion, the nozzle including a deformable section; The cover assembly includes a venting mechanism, and deformation of the deformable section causes the venting mechanism to switch between an open configuration and a closed configuration, wherein the open configuration allows fluid communication between the interior of the container and the atmosphere, and the closed configuration prevents fluid communication between the interior of the container and the atmosphere.

2. The cover assembly according to claim 1, wherein the venting mechanism comprises: - Vents, which are arranged at the base portion, and - A sealing portion, defined by at least a portion of the nozzle, for sealing the orifice in the closed configuration.

3. The cover assembly of claim 2, wherein the contour of the base portion is configured to provide a socket; the vent is disposed at the socket.

4. The cover assembly according to claim 3, The profile of the socket is configured to allow the nozzle to be detachably received in the socket, defining an upper portion and a lower portion of the nozzle, wherein the upper portion of the nozzle is adapted and movably received in the socket, and the lower portion of the nozzle extends outward beyond the bottom of the socket.

5. The cover assembly of claim 4, wherein the socket includes a surrounding wall, the vent is disposed at the surrounding wall, and the sealing portion is defined by at least a portion of the upper portion of the nozzle.

6. The cover assembly of claim 5, wherein the peripheral wall comprises a peripheral wall and a bottom wall, and the vent is disposed at the peripheral wall and / or the bottom wall.

7. The cap assembly of claim 6, wherein the upper portion of the nozzle includes the deformable section.

8. The cover assembly of claim 7, wherein the deformable segment has a straight, V-shaped, C-shaped, S-shaped, or W-shaped side profile.

9. The cap assembly of claim 7, wherein at least the deformable section of the nozzle is made of an elastic or tough material.

10. The cap assembly of claim 7, wherein the nozzle is integrally formed of an elastic or tough material.

11. The cover assembly of claim 7, wherein the sealing portion is defined by at least a portion of the deformable section, and the vent is arranged at the bottom wall.

12. The cap assembly of claim 11, wherein the nozzle further includes a shoulder portion between the deformable section and the lower portion, the shoulder portion being positioned in the socket and having a through hole at the shoulder portion, the position of the through hole overlapping the position of the air hole.

13. The cover assembly of claim 12, wherein the bottom wall includes a hollow through-hole collar, the hollow through-hole collar standing upright from the vent and extending beyond the through-hole of the shoulder portion, wherein the positions of the hollow through-hole portion of the hollow through-hole collar, the positions of the vent at the bottom wall, and the positions of the through-hole at the shoulder portion overlap.

Images