A water cup

By using a one-piece molded straw design and a one-way valve assembly, the problems of traditional water cup straws being easily contaminated, easily falling off, and having difficulty drawing water are solved, achieving a convenient, hygienic, and sealed water drawing experience.

CN224307111UActive Publication Date: 2026-06-02DONGGUAN ZHISHANG PLASTIC HARDWARE PROD CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN ZHISHANG PLASTIC HARDWARE PROD CO LTD
Filing Date
2025-08-19
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Traditional water cups have straws that are prone to contamination, detachment, and difficulty in drawing water, especially when negative pressure is applied.

Method used

The first straw is integrally molded with the cup body, and the second straw is integrally molded with the inner lid. The air pressure is balanced by a one-way valve assembly to prevent negative pressure from forming, and the locking assembly ensures that the straw will not fall off and that the cup is sealed.

Benefits of technology

Ensures the straw remains uncontaminated, prevents it from falling off, ensures smooth water intake, improves hygiene and convenience, has a good seal, and is suitable for carrying and use.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224307111U_ABST
    Figure CN224307111U_ABST
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Abstract

The utility model relates to a water cup, including square cup body, with the cup cover articulation of cup body, one side of cup body is equipped with for locking cup cover lock catch subassembly, be equipped with first straw in cup body, first straw is integrated with cup body through injection molding, and the bottom of first straw is equipped with opening, the cup mouth of cup body is sealed with the inner cover of plug -in type, is equipped with second straw of first straw plug -in cooperation with in the inner cover, and second straw is integrated in the inner wall of inner cover through injection molding, and the inner cover is equipped with the suction nozzle of second straw intercommunication, the one -way valve subassembly for balancing cup body internal air pressure and allowing outside air one -way entry is equipped on the inner cover, through the design of first straw and cup body, second straw and inner cover respectively integrated, when opening cup cover and adding water, second straw and first straw are disconnected, avoid the problem that traditional straw is polluted because of too long contact table top, and simultaneously will not appear the situation of falling off, guaranteeed that use hygiene and convenient.
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Description

Technical Field

[0001] This utility model relates to the field of water cup technology, and specifically to a water cup. Background Technology

[0002] In daily life, water cups are a common drinking tool, and their design for convenience and hygiene is crucial. Traditional water cups mostly use a structure where a separate straw is attached to the lid, which has several drawbacks. When opening the lid to add water, the long straw easily comes into contact with the table, becoming contaminated with dust and bacteria, affecting the user's health. Furthermore, because the straw is only simply attached, it is prone to falling off during daily use and carrying, causing inconvenience and straw loss. In addition, when drinking from a traditional water cup, as the liquid level decreases, the internal air pressure drops. Without an effective pressure equalization device, negative pressure can form, making it difficult to drink and reducing the user experience. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a water cup.

[0004] The objective of this utility model can be achieved through the following technical solution: A water cup includes a square cup body and a cup lid hinged to the cup body. A locking assembly for locking the cup lid is provided on one side of the cup body. A first straw is provided inside the cup body. The first straw is integrally formed with the cup body by injection molding, and the bottom of the first straw has an opening. An inner lid is inserted and sealed at the mouth of the cup body. A second straw is provided on the inner lid and inserted and cooperates with the first straw. The second straw is integrally formed on the inner wall of the inner lid by injection molding. A mouthpiece communicating with the second straw is provided on the inner lid. A one-way valve assembly is provided on the inner lid for balancing the air pressure inside the cup and allowing outside air to enter in one direction.

[0005] Preferably, the locking assembly includes a base, a button rotatably mounted on the base, a first spring between the button and the base, a locking hook at one end of the button, and a locking groove on the cup lid corresponding to the locking hook.

[0006] Preferably, the one-way valve assembly includes a valve seat, a guide post inside the valve seat, a valve plate movably mounted on the guide post, and a second spring at the bottom of the valve plate.

[0007] Preferably, a sealing gasket is provided between the inner lid and the cup body.

[0008] Preferably, the cup lid has a cap that corresponds to the spout.

[0009] Preferably, a hanging loop is provided on the outer wall of the cup body.

[0010] Preferably, the inner cover has a receiving groove, and a pull ring is hinged in the receiving groove.

[0011] The beneficial effects of this utility model are as follows: By designing the first straw and the cup body and the second straw and the inner lid as integrally formed, the second straw is disconnected from the first straw when water is added by opening the cup lid, which avoids the problem of traditional straws being contaminated due to excessive contact with the table surface. At the same time, it will not fall off, ensuring hygiene and convenience. In addition, the one-way valve assembly can balance the air pressure inside the cup, preventing the formation of negative pressure when drinking water and ensuring a smooth water intake process. Attached Figure Description

[0012] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a water cup according to the present invention.

[0014] Figure 2 This is a cross-sectional view of a water cup according to the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the first straw of a water cup according to the present invention.

[0016] Figure 4 This is a schematic diagram of the structure of a water cup inner lid, which is a utility model.

[0017] Figure 5 This is another structural schematic diagram of a water cup inner lid, which is a utility model.

[0018] Figure 6 for Figure 2 A partial schematic diagram of point A in the middle.

[0019] Figure 7 for Figure 2 A partial schematic diagram of point B in the middle.

[0020] The labels in the diagram represent: 1. Cup body; 2. Cup lid; 3. Locking assembly; 301. Base; 302. Button; 303. First spring; 304. Lock hook; 305. Lock groove; 4. First straw; 5. Opening; 6. Inner lid; 7. Second straw; 8. Suction nozzle; 9. One-way valve assembly; 901. Valve seat; 902. Guide post; 903. Valve plate; 904. Second spring; 10. Sealing gasket; 11. Cover; 12. Hanging rope ring; 13. Receiving groove; 14. Pull ring. Detailed Implementation

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] See Figures 1 to 7As shown, the structure of this utility model is as follows: a water cup includes a square cup body 1 and a cup lid 2 hinged to the cup body 1. A locking assembly 3 for locking the cup lid 2 is provided on one side of the cup body 1. A first straw 4 is provided inside the cup body 1, integrally formed with the cup body 1 by injection molding. An opening 5 is provided at the bottom of the first straw 4. An inner lid 6 is inserted and sealed at the mouth of the cup body 1. A second straw 7 is provided on the inner lid 6, which is inserted and cooperates with the first straw 4. The second straw 7 is integrally formed on the inner wall of the inner lid 6 by injection molding. A nozzle 8 communicating with the second straw 7 is provided on the inner lid 6. A one-way valve assembly 9 is provided on the inner lid 6 to balance the air pressure inside the cup body 1 and allow outside air to enter in one direction. Specifically, the cup lid 2 is hinged to the square cup body 1, and the opening and closing of the cup lid 2 is achieved by the locking assembly 3 on one side. The first straw 4 inside the cup body 1 is integrally formed with the cup body 1 during injection molding, and the bottom... Opening 5 is used to draw liquid from the cup; the inner cover 6 at the cup mouth also integrally molds the second straw 7 onto the inner wall through injection molding. After the inner cover 6 is fastened to the cup mouth, the second straw 7 and the first straw 4 are inserted and connected to form a complete straw channel. The nozzle 8 serves as the outlet for drawing out the liquid. Since the first and second straws 7 are integrally molded with the cup body 1 and the inner cover 6 respectively, when water is added by opening the cup lid 2, the second straw 7 is disconnected from the first straw 4. Unlike traditional straws, it will not come into contact with the table due to its excessive length, causing contamination, and it will not fall off. This effectively solves the problems of traditional straws being easily contaminated and easily falling off. Since the inner cover 6 is sealed to the cup body 1, when water is drawn through the nozzle 8, the liquid in the cup body 1 decreases and the air pressure decreases. At this time, the one-way valve assembly 9 opens, allowing outside air to flow into the cup in one direction to prevent liquid or gas from flowing out in reverse, avoiding the formation of negative pressure in the cup, and ensuring smooth water intake.

[0025] like Figure 6 As shown, the locking assembly 3 includes a base 301, a button 302 rotatably mounted on the base 301, a first spring 303 between the button 302 and the base 301, a locking hook 304 at one end of the button 302, and a locking groove 305 corresponding to the locking hook 304 on the cup lid 2. Specifically, the base 301 serves as a fixed component, and the button 302 can rotate on it. The first spring 303 provides a reset force for the button 302. When one end of the button 302 is pressed, the button 302 rotates around the base 301, and the locking hook 304 at one end rotates and disengages from the locking groove 305 on the cup lid 2, thereby opening the cup lid 2. After the button 302 is released, under the action of the first spring 303, the button 302 resets, and the locking hook 304 re-engages into the locking groove 305, thus locking the cup lid 2. The opening and closing locking of the cup lid 2 can be achieved through a simple pressing operation, which is convenient and quick to operate, and the locking is firm, effectively preventing the cup lid 2 from accidentally opening and causing liquid to spill.

[0026] like Figure 7As shown, the one-way valve assembly 9 includes a valve seat 901, a guide post 902 inside the valve seat 901, a valve plate 903 movably mounted on the guide post 902, and a second spring 904 at the bottom of the valve plate 903. Specifically, during water intake, the liquid in the cup decreases, and the air pressure decreases. When the air pressure inside the cup is lower than the external air pressure, the external air pushes the valve plate 903 to overcome the elastic force of the second spring 904 and move downward along the guide post 902. Air enters the cup from the valve seat 901 to balance the air pressure. When the air pressure inside the cup is balanced with the external air pressure, the valve plate 903 returns to its original position under the action of the second spring 904, closing the channel and preventing liquid from flowing out or external impurities from entering. This ensures a smooth water intake process and avoids the problem of difficulty in drinking due to negative pressure. At the same time, the one-way flow design prevents liquid leakage and improves the sealing performance and reliability of the water cup.

[0027] like Figure 4 , Figure 5 As shown, a sealing gasket 10 is provided between the inner lid 6 and the cup body 1. Specifically, the sealing gasket 10 fills the gap between the inner lid 6 and the cup body 1 by squeezing and deforming, preventing liquid from leaking through the gap, effectively improving the sealing performance of the water cup, preventing liquid leakage, and avoiding liquid spillage during carrying.

[0028] like Figure 2 , Figure 3 As shown, the cup lid 2 has a sealing cap 11 corresponding to the spout 8. Specifically, after the cup lid 2 is closed, the sealing cap 11 is precisely locked onto the spout 8. This locking creates a tight physical barrier, which on the one hand effectively prevents the liquid in the cup from leaking out of the spout 8, ensuring that the liquid is firmly sealed even if the cup is tilted or inverted; on the other hand, it isolates the spout 8 from the external environment, preventing dust, bacteria and other impurities from adhering to the spout 8, keeping the spout 8 clean, and providing users with a hygienic and safe drinking experience.

[0029] like Figure 3 As shown, a lanyard loop 12 is provided on the outer wall of the cup body 1. Specifically, by passing the lanyard through the lanyard loop 12 and tying a knot to fix it, the water cup can be hung on a backpack, wrist, or other position. Utilizing the fixed connection point provided by the lanyard loop 12, the user can easily carry the water cup with the help of the lanyard, freeing up their hands. It is especially suitable for outdoor activities, sports, and other scenarios, improving the convenience and portability of the water cup.

[0030] like Figure 5 As shown, the inner lid 6 has a receiving groove 13, and a pull ring 14 is hinged in the receiving groove 13. Specifically, the pull ring 14 can be rotated and stored in the receiving groove 13 through the hinge, so as not to affect the fastening of the cup lid 2. When it is necessary to open the inner lid 6 to add water or clean the cup, the user can easily pull the inner lid 6, which is plugged and sealed on the cup body 1, by pulling the pull ring 14. Compared with directly prying the inner lid 6 with your hands, the operation is more labor-saving and convenient, and the portability is improved.

[0031] In practical use, first, operate the locking assembly 3 on one side of the cup body 1 to open the cup lid 2, which is hinged to the cup body 1. Then, pull out the inner lid 6, which has a second straw 7 and a spout 8. Add water to the cup body 1. After adding water, insert the inner lid 6 back into the cup opening to seal it. At this time, the second straw 7, which is integrally formed on the inner lid 6, and the first straw 4, which is integrally formed inside the cup body 1, are inserted and cooperate to form a complete straw channel. Then, put the cup lid 2 back on and lock it with the locking assembly. After the cup lid 2 is locked, the inner lid 6 is firmly pressed against the cup opening to prevent water leakage. When drinking water, open the cup lid 2 and drink water through the spout 8. When drinking water, the liquid in the cup body 1 decreases and the air pressure decreases. At this time, the one-way valve assembly 9 opens, allowing outside air to flow into the cup in one direction to prevent liquid or gas from flowing out in reverse and to avoid the formation of negative pressure inside the cup, ensuring smooth drinking. When finished using, the cup lid 2 can be closed again with the locking assembly 3 to complete one use operation.

[0032] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A water cup, characterized in that: The cup includes a square cup body (1) and a cup lid (2) hinged to the cup body (1). A locking assembly (3) for locking the cup lid (2) is provided on one side of the cup body (1). A first straw (4) is provided inside the cup body (1). The first straw (4) is integrally formed with the cup body (1) by injection molding. An opening (5) is provided at the bottom of the first straw (4). An inner cover (6) is inserted and sealed at the mouth of the cup body (1). A second straw (7) is provided on the inner cover (6) and is inserted and cooperates with the first straw (4). The second straw (7) is integrally formed on the inner wall of the inner cover (6) by injection molding. A mouthpiece (8) communicating with the second straw (7) is provided on the inner cover (6). A one-way valve assembly (9) is provided on the inner cover (6) to balance the air pressure inside the cup body (1) and allow outside air to enter in one direction.

2. A water cup according to claim 1, characterized in that: The locking assembly (3) includes a base (301), a button (302) is rotatably provided on the base (301), a first spring (303) is provided between the button (302) and the base (301), a locking hook (304) is provided at one end of the button (302), and a locking groove (305) corresponding to the locking hook (304) is provided on the cup lid (2).

3. A water cup according to claim 1, characterized in that: The one-way valve assembly (9) includes a valve seat (901), a guide post (902) is provided inside the valve seat (901), a valve plate (903) is movably provided on the guide post (902), and a second spring (904) is provided at the bottom of the valve plate (903).

4. A water cup according to claim 1, characterized in that: A sealing gasket (10) is provided between the inner cover (6) and the cup body (1).

5. A water cup according to claim 1, characterized in that: The cup lid (2) is provided with a cap (11) corresponding to the spout (8).

6. A water cup according to claim 1, characterized in that: The outer wall of the cup body (1) is provided with a hanging rope ring (12).

7. A water cup according to claim 1, characterized in that: The inner cover (6) has a receiving groove (13), and a pull ring (14) is hinged in the receiving groove (13).