One-handed self-closing non-spill lid and cup

Abstract

The utility model discloses a one -hand operation's self -closing does not give out cover and cup. Cover contains cover body, sealing element, movable piece, handle, face cover and elastic part, and cover body is equipped with water outlet, and sealing element forms water outlet hole, and handle can drive movable piece to open water outlet hole by pressing, and elastic part drives its automatic closing. The sealing element is of silica gel material, and flexible convex strip is arranged to enhance sealing; the cover body and the movable piece are separately provided with air holes and air inlet holes, and the air pressure is balanced to ensure smooth water outlet. The cup comprises the cover and a detachable cup body, solves the problems of existing cover needing two-hand operation, poor sealing, and unsmooth water outlet, can prevent liquid leakage when the cup is tilted, avoids damage to the table top, electronic equipment or files, and causes troubles or serious consequences, and can prevent safety hazards and unintentional accidents. The utility model patent realizes one -hand convenient operation and self -closing leak -proof, and is suitable for various scenes.

Description

Technical Field

[0001] This utility model relates to the field of daily necessities technology, specifically to a self-closing, non-leaking lid that can be operated with one hand for everyday drinking utensils and a cup using the lid, which is particularly suitable for scenarios requiring convenient operation, leak prevention, and smooth water flow. Background Technology

[0002] In daily life and work, cups are essential household items, and the practicality of their lids directly affects the user experience. Current technology for traditional cup lids has the following drawbacks:

[0003] Inconvenient to operate: Most lids require both hands to open or close. In scenarios such as holding items, driving, or working, it is difficult to operate with one hand, resulting in poor flexibility.

[0004] There are many safety hazards and unnecessary unintentional mistakes; most lids require both hands to open or close. When the lid is forgotten to be closed or some cups without lids are accidentally spilled, the beverage (liquid) inside the cup will spill onto the table, the ground, electronic devices, or important documents, causing some incalculable troubles or even more serious consequences.

[0005] Insufficient sealing: The sealing structure is poorly designed, which can easily lead to water leakage when carrying or tilting, causing items to get wet, or even damaging electronic devices when the cup is knocked over in the workplace.

[0006] Poor water flow: An imbalance in air pressure between the inside and outside of the cup can cause "stuttering" or "gushing" of water, affecting the drinking experience.

[0007] To address the aforementioned problems, this utility model aims to provide a lid and cup that can be operated with one hand, is self-closing, has excellent sealing performance, and allows for smooth water flow, thereby overcoming the shortcomings of the prior art. Utility Model Content

[0008] The purpose of this invention is to overcome the defects of existing cup lids, such as requiring two hands to operate, poor sealing, and poor water flow, and to provide a self-closing, leak-proof lid and cup that can be operated with one hand, has a reasonable structure, is easy to operate, has a reliable seal, and allows for smooth water flow.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A self-closing, leak-proof cap that can be operated with one hand includes a cap body, a sealing element, a movable piece, a handle, and a faceplate. The cap body has a water outlet, and a flexible sealing element is installed and fixed at the water outlet to form a water outlet hole. The movable piece is movably installed between the sealing element and the faceplate. One end of the movable piece is rotatably connected to the handle. Pressing the handle drives the movable piece to open the water outlet hole. The cap also includes an elastic element, which is a spring, to reset the movable piece and the handle to close the water outlet hole.

[0011] Furthermore, the upper surface of the cover is provided with a slot, one side of the elastic element is installed in the slot, and the other side is installed on the bottom of the movable piece, the bottom of the movable piece is provided with a spring hole that matches the elastic element.

[0012] Furthermore, the cover is also provided with a through hole, the sealing element is installed inside the through hole to form an air hole, the movable piece is provided with a corresponding air inlet hole, the bottom surface of the cover is provided with an abutment strip, the upper surface of the movable piece abuts against the abutment strip, and a gap is left between the movable piece and the cover. When the movable piece moves to a predetermined position, the inside of the cup body is connected to the atmosphere through the air hole and the air inlet hole.

[0013] Furthermore, the sealing element has flexible protrusions at the water outlet and air vent, the protrusions abutting against the movable piece, and the sealing element is made of silicone.

[0014] Furthermore, the upper part of the handle is connected to the end of the movable piece via a pivot, a support column is provided in the middle of the handle, and a finger position is provided in the lower part of the handle. By pressing the finger position, the handle rotates around the support column as a fulcrum, causing the movable piece to slide.

[0015] Furthermore, protruding posts are provided on both sides of the upper part of the handle. When the handle is located on the side of the cover, the handle abuts against the limiting part of the movable piece through the protruding posts, restricting the movement of the handle; when the handle is located on the top of the cover, the protruding posts are locked in the locking holes, restricting the handle from loosening.

[0016] Furthermore, a suspended column is provided at the bottom of the cover, the suspended column has a fixing hole, and a removable rubber plug is provided at the top of the fixing hole.

[0017] This utility model also provides a cup that can be operated with one hand, including the lid mentioned above, and a cup body, wherein the cup body and the lid body are detachably connected.

[0018] Furthermore, the lid is installed on the cup body by a sealing ring, and a groove is provided on the outer periphery of the cup body. The support post of the handle abuts against the groove, and the cup body and the lid are detachably connected by a threaded structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] One-handed operation: The water outlet can be opened by pressing the handle and automatically closed by the elastic element after being released. No two hands are required, making it convenient to operate and suitable for various scenarios.

[0021] Good sealing performance: The seal is made of silicone, and its flexible convex strip abuts against the movable plate, which can effectively ensure the sealing performance of the water outlet and air hole and prevent water leakage.

[0022] Smooth water flow: It is equipped with air holes and air inlets. When the movable plate moves to the predetermined position, the inside of the cup body is connected to the atmosphere, balancing the air pressure and making the water flow smoother.

[0023] Stable structure: The protrusion of the handle cooperates with the limiting part or locking hole of the movable plate to restrict the movement and loosening of the handle, ensuring the stability of the overall structure.

[0024] Reliable connection: The cup body and lid body are detachably connected by a threaded structure, which is convenient for disassembly and cleaning, and the connection is firm. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 , 2 This is an overall schematic diagram of an embodiment of the present utility model;

[0027] Figure 3 An exploded view diagram provided for an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the connection structure between the movable piece and the handle provided in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the bottom structure of the face cover and movable piece provided in an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the bottom structure of the faceplate provided in an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the lid and cup body provided in an embodiment of the present utility model;

[0032] Figure 8 , 9 A cross-sectional view provided for an embodiment of this utility model.

[0033] The following are the labeling elements in the figure:

[0034] 1. Cover; 11. Outlet; 12. Through hole; 13. Slot;

[0035] 2. Sealing element; 21. Water outlet; 22. Air vent; 23. Raised strip;

[0036] 3. Movable piece; 31. Air inlet; 32. Spring hole; 33. Locking hole; 34. Limiting part;

[0037] 4. Handle; 41. Pivot; 42. Protruding post; 43. Support post; 44. Finger position;

[0038] 5. Top cover; 51. Abutment strip; 52. Fixing hole; 53. Rubber plug; 54. Suspension column;

[0039] 6. Cup body; 61. Groove;

[0040] 7. Spring.

[0041] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0043] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0044] Please see Figures 1-9As shown, a self-closing, leak-proof cap that can be operated with one hand includes a cap body 1, a sealing element 2, a movable piece 3, a handle 4, and a faceplate 5. The cap body 1 has a water outlet 11. The flexible sealing element 2 is installed and fixed at the water outlet 11 to form a water outlet hole 21. The movable piece 3 is movably installed between the sealing element 2 and the faceplate 5. One end of the movable piece 3 is rotatably connected to the handle 4. Pressing the handle 4 drives the movable piece 3 to open the water outlet hole 21. The cap also includes an elastic element, a spring 7, to reset the movable piece 3 and the handle 4 to close the water outlet hole 21. The core of the cap lies in the coordinated operation of the cap body 1, the sealing element 2, the movable piece 3, the handle 4, the faceplate 5, and the elastic element to achieve the functions of one-handed operation, self-closing, leak-proof, and smooth water flow. The lid body 1, as the basic load-bearing component of the entire lid, is injection molded from food-grade PP material. It meets the needs of daily drinking for both hot and cold water, and possesses high mechanical strength and corrosion resistance, making it resistant to aging or deformation from prolonged contact with beverages. Furthermore, food-grade PP is non-toxic and harmless, meeting food safety standards and ensuring user safety. The lid body 1 has a circular structure with a diameter adapted to standard cup sizes, typically between 70mm and 90mm, but adjustable according to cup specifications. Its lower surface features internal threads, a design that ensures a secure connection to the cup while allowing for easy tightening or disassembly for convenient cleaning.

[0045] like Figure 3 As shown, a water outlet 11 is provided on the upper surface of the cover 1. The water outlet 11 is located at the edge of the cover 1 and is rectangular. The inner wall of the water outlet 11 has a ring-shaped groove for embedding the edge of the sealing element 2. Through the interference fit between the edge of the sealing element 2 and the groove, the sealing element 2 is fixed at the water outlet 11, preventing the sealing element 2 from shifting during use and affecting the sealing effect. On the side of the upper surface of the cover 1 away from the water outlet 11, a through hole 12 is also provided. The through hole 12 is parallel to the water outlet 11 and also has a ring-shaped groove on its inner side. Its structure is consistent with the groove at the water outlet 11. It is used to fix the corresponding part of the sealing element 2, forming an air hole 22, providing a channel for gas circulation between the inside of the cup and the outside.

[0046] like Figure 3 As shown, a groove 13 is provided on the side of the upper surface of the cover 1 away from the water outlet 11, for engaging one end of the elastic element. The elastic element here is a roughly prismatic spring 7 made of stainless steel, ensuring that the spring 7 has appropriate elasticity, allowing it to be easily compressed when the handle 4 is pressed, and providing sufficient elasticity to drive the movable piece 3 to return to its original position after release. A guide groove is also provided on the upper surface of the cover 1 to guide the movable piece 3 to slide in a straight line, preventing it from shifting during sliding and ensuring precise alignment between the water outlet 21 and the air inlet 31.

[0047] like Figure 3As shown, the sealing element 2 is integrally molded from food-grade silicone. Silicone possesses excellent elasticity and flexibility, with a Shore hardness between 50 and 60 HA. This hardness ensures sufficient adhesion between the sealing element 2 and the movable piece 3 for effective sealing, while also reducing frictional resistance during the sliding of the movable piece 3, making operation smoother. Simultaneously, silicone exhibits good high and low temperature resistance, maintaining stable performance within a temperature range of -40℃ to 200℃ without hardening or softening due to temperature changes, ensuring a good seal even when containing hot or cold water. Furthermore, food-grade silicone is non-toxic, odorless, has strong aging resistance, a long service life, and meets food safety requirements.

[0048] The sealing element 2 is sheet-shaped and covers the outlet 11 and through hole 12 of the cover 1. At the position corresponding to the outlet 11 of the cover 1, the sealing element 2 has an outlet hole 21. The edge of the outlet hole 21 protrudes upward to form an annular sealing edge. This structure enhances the tightness of the fit with the lower surface of the movable piece 3, improving the sealing effect. At the position corresponding to the through hole 12 of the cover 1, the sealing element 2 has an air hole 22. The structure of the air hole 22 is consistent with that of the outlet hole 21, ensuring smooth airflow. At the edges of the outlet hole 21 and the air hole 22, the sealing element 2 has a continuous flexible raised strip 23. The raised strip 23 has a semi-circular cross-section and abuts against the lower surface of the movable piece 3. Through the elastic deformation of the silicone, a tight sealing contact is formed between the raised strip 23 and the movable piece 3, effectively preventing liquid leakage from the outlet hole 21 and the air hole 22.

[0049] like Figure 8 , 9 As shown, the movable piece 3 is installed between the seal 2 and the cover 5. It is injection molded from food-grade ABS material. ABS material has high strength and toughness, a smooth surface, and a low coefficient of friction, which facilitates the smooth sliding of the movable piece 3 on the seal 2. The movable piece 3 has a rectangular thin sheet structure. An air inlet 31 is provided on the movable piece 3 at the position corresponding to the through hole 12 of the cover 1. When the movable piece 3 slides to the predetermined position, the air inlet 31 aligns with the air hole 22, realizing the flow of gas between the inside of the cup and the outside.

[0050] The bottom of the movable piece 3 has a spring hole 32, which is a cylindrical blind hole for installing a spring 7. One end of the spring 7 is inserted into the slot 13 of the cover 1, and the other end is embedded in the spring hole 32 of the movable piece 3. This installation method ensures that the spring 7 remains stable under force and does not undergo lateral displacement, thus ensuring a stable output of elastic force. Limiting parts 34 are provided on both sides of the movable piece 3 near the connecting end of the handle 4. The limiting parts 34 have an arc-shaped structure. When the handle 4 is located on the side of the cover 1, the protrusion 42 of the handle 4 abuts against the limiting part 34, limiting the range of motion of the handle 4 and preventing the handle 4 from rotating accidentally when not in operation. A locking hole 33 is provided at the end of the movable piece 3 away from the spring hole 32. The locking hole 33 is circular and fits the protrusion 42 of the handle 4. When the handle 4 is rotated to the top of the cover 5, the protrusion 42 engages with the locking hole 33, locking the handle 4 and preventing it from loosening during use.

[0051] like Figure 8 , 9 As shown, the handle 4 drives the sliding of the movable piece 3. A pivot 41 is located on the inner side of the upper part of the handle 4. The position of the pivot 41 corresponds to the shaft hole at the end of the movable piece 3, allowing the handle 4 to rotate flexibly around the pivot 41. The rotational damping is controlled between 0.5 N·m and 1 N·m, ensuring smooth rotation without excessive looseness. A support post 43 is located on the inner side of the middle part of the handle 4. The support post 43 has an arc-shaped protrusion and serves as the fulcrum for the rotation of the handle 4. Its end is equipped with a wear-resistant silicone pad with a smooth surface, reducing frictional wear between the support post 43 and the groove 61 of the cup body 6, thus extending its service life. A finger rest 44 is located on the outer side of the lower part of the handle 4. The finger rest 44 has an arc-shaped concave structure, with an arc conforming to the arc of the fingertips of an adult's index and middle fingers. The surface has anti-slip textures, which increase the friction between the fingers and the handle 4, improving grip stability during pressing and preventing slippage. The upper part of the handle 4 has symmetrical protrusions 42 on both sides. The protrusions 42 are cylindrical and their positions are precisely corresponding to the limiting part 34 and the locking hole 33 of the movable piece 3, ensuring effective limiting and locking in different states.

[0052] like Figure 1 , 2 As shown in Figure 3, the cover 5 is placed on top of the cover 1. In this embodiment, the cover 5 is injection molded from transparent food-grade PC material. PC material has good transparency and impact resistance, with a light transmittance of over 85%, making it easy for users to observe the condition of internal components. It can also withstand a certain amount of impact and is not easily broken. The cover 5 has a circular cover structure with the same diameter as the cover 1 and a thickness of 2mm to 3mm. The edges are provided with downward folded edges, which fit with the edges of the cover 1 to achieve the initial positioning of the cover 5 and the cover 1.

[0053] A retaining strip 51 is provided at the edge of the bottom surface of the cover 5. The retaining strip 51 is a strip-shaped protrusion that abuts against the upper surface of the movable piece 3. The installation pressure of the cover 5 applies slight pressure to the movable piece 3 through the retaining strip 51, ensuring that the movable piece 3 and the protrusion 23 of the sealing element 2 fit tightly together, enhancing the sealing effect. A suspended column 54 is symmetrically provided on the bottom surface of the cover 5. The suspended column 54 is a cylindrical hollow structure. The lower end of the suspended column 54 leaves a gap with the upper surface of the cover body 1 to avoid affecting the sliding of the movable piece 3. A fixing hole 52 is provided at the axial position of the suspended column 54. The fixing hole 52 is a threaded hole with a specification of M3 to M4, used to fix the cover 5 and the cover body 1 together with screws. The screws are made of stainless steel to ensure a firm connection. The top of the fixing hole 52 is provided with a rubber plug 53. The rubber plug 53 is made of silicone and has a frustum-shaped structure. It is inserted into the fixing hole 52 by interference fit, which can not only cover the screw and improve the aesthetics, but also prevent dust from entering the fixing hole 52.

[0054] This utility model also includes a cup that can be operated with one hand. The cup consists of the aforementioned lid and cup body 6. The cup body 6 is made of food-grade stainless steel, with an inner wall that has undergone electrolytic polishing, making it smooth, easy to clean, and less prone to bacterial growth. The outer wall is powder-coated with anti-slip textures to improve grip. The height of the cup body 6 is designed according to capacity requirements, typically between 150mm and 250mm, with a capacity of 300ml to 500ml, meeting daily drinking needs. The upper part of the cup body 6 has an external thread that matches the internal thread of the lid 1, with the thread specifications being consistent to ensure a tight connection between the lid 1 and the cup body 6. Near the upper part of the outer periphery of the cup body 6, there is a groove 61. The groove 61 is annular and corresponds to the support post 43 of the handle 4. When the lid 1 is connected to the cup body 6, the support post 43 of the handle 4 abuts against the groove 61. The bottom of the groove 61 has a wear-resistant coating to reduce frictional wear between the support post 43 and the cup body 6, while ensuring the stability of the fulcrum when the handle 4 is pressed, improving the smoothness of operation.

[0055] A sealing ring is provided between the lid 1 and the cup 6. The sealing ring is made of silicone and is installed in the annular groove on the lower surface of the lid 1. When the lid 1 and the cup 6 are tightened, the sealing ring is compressed and produces elastic deformation, filling the gap between the lid 1 and the cup 6, thus achieving a seal at the connection between the two and preventing liquid from leaking from the connection.

[0056] During assembly, first, embed the edge of the seal 2 into the grooves of the outlet 11 and through hole 12 of the cover 1, ensuring that the outlet hole 21 of the seal 2 is aligned with the outlet 11 of the cover 1, and the air hole 22 is aligned with the through hole 12 of the cover 1. Press the seal 2 to fix it firmly. Then, insert one end of the spring 7 into the slot 13 of the cover 1, and align the other end with the spring hole 32 of the movable piece 3. Place the movable piece 3 on the cover 1, so that the sliding groove of the movable piece 3 cooperates with the sliding rail of the cover 1. The other end of the spring 7 is embedded in the spring hole 32. At this time, the movable piece 3 is in its initial position under the action of the spring 7, and it is in close contact with the protrusion 23 of the seal 2. Next, insert the rotating shaft 41 of the handle 4 into the shaft hole at the end of the movable piece 3 to connect the handle 4 and the movable piece 3. Adjust the position of the handle 4 so that the support column 43 of the handle 4 faces the inside of the cover 1. Next, place the cover 5 onto the lid 1, aligning the suspended post 54 of the cover 5 with the corresponding position on the lid 1. Secure the cover 5 to the lid 1 using screws through the fixing holes 52, and insert the rubber stopper 53 into the top of the fixing holes 52. Finally, place the sealing ring into the annular groove on the lower surface of the lid 1, and connect the lid 1 to the cup body 6 using threads, tightening until the sealing ring is appropriately compressed, completing the assembly of the entire cup.

[0057] like Figure 8 , 9 As shown, during use, when the cup is in the closed state, the lower surface of the movable piece 3, under the action of the spring 7, tightly abuts against the protrusion 23 of the sealing piece 2, sealing the water outlet 21 and the air hole 22. At this time, the handle 4 is located on the side of the lid 1, and the protrusion 42 of the handle 4 abuts against the limiting part 34 of the movable piece 3, restricting the movement of the handle 4 and ensuring reliable sealing. Even if the cup is knocked over or tilted, no water leakage will occur. When drinking, the user holds the cup body 6 with one hand, placing their index and middle fingers on the finger positions 44 of the handle 4 and pressing gently. The handle 4 rotates around the support post 43, causing the movable piece 3 to slide along the slide rail of the lid 1 against the elastic force of the spring 7. As the movable piece 3 slides, it gradually moves away from the water outlet 21 of the seal 2, opening the water outlet 21. At the same time, the air inlet 31 of the movable piece 3 aligns with the air hole 22 of the seal 2, allowing the interior of the cup body 6 to communicate with the atmosphere through the air hole 22 and the air inlet 31, balancing the air pressure and allowing the liquid to flow smoothly from the water outlet 21. After drinking, the user releases their fingers, the spring 7 returns to its original state, pushing the movable piece 3 back to its original position, resealing the water outlet 21 and the air hole 22. The handle 4 returns to the side of the lid 1 under the action of the movable piece 3, and the protrusion 42 abuts against the limiting part 34 again, restoring the closed state.

[0058] If the cup is placed in the backpack, to prevent accidental pressing of the handle 4, the handle 4 can be rotated to the top of the cover 5 so that the protrusion 42 of the handle 4 can be engaged in the locking hole 33 of the movable piece 3, thereby locking the handle 4. At this time, the water outlet 21 remains closed.

[0059] This invention, through the meticulously designed structure and fit of its components, achieves convenient one-handed operation, reliable self-closing, excellent sealing, and smooth water flow, effectively solving many defects of existing cup lids. It is suitable for various scenarios such as driving, office work, and outdoor activities, providing users with a better user experience.

[0060] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0061] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. The terms "upper end," "lower end," "left side," "right side," "front end," "rear end," and similar expressions used herein refer to the positional relationship with reference to the accompanying drawings.

[0062] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A self-closing, leak-proof cap that can be operated with one hand, characterized in that: The device includes a cover (1), a seal (2), a movable piece (3), a handle (4), and a faceplate (5). The cover (1) has a water outlet (11). The flexible seal (2) is installed and fixed at the water outlet (11) to form a water outlet hole (21). The movable piece (3) is movably installed between the seal (2) and the faceplate (5). One end of the movable piece (3) is rotatably connected to the handle (4). By pressing the handle (4), the movable piece (3) is driven to open the water outlet hole (21). The device also includes an elastic piece (7) that resets the movable piece (3) and the handle (4) to close the water outlet hole (21).

2. The self-closing, leak-proof cap that can be operated with one hand according to claim 1, characterized in that: The upper surface of the cover (1) is provided with a slot (13), and one side of the elastic element (7) is installed on the slot (13), and the other side is installed on the bottom of the movable piece (3).

3. The self-closing, leak-proof cap that can be operated with one hand according to claim 1, characterized in that: The cover (1) is also provided with a through hole (12), and the sealing element (2) is installed inside the through hole (12) to form an air hole (22). The movable piece (3) is provided with a corresponding air inlet (31). The bottom surface of the cover (5) is provided with an abutment strip (51). The upper surface of the movable piece (3) abuts against the abutment strip (51). There is a gap between the movable piece (3) and the cover (5). When the movable piece (3) moves to the predetermined position, the inside of the container adapted to the cover (1) is connected to the atmosphere through the air hole (22) and the air inlet (31).

4. A self-closing, leak-proof cap that can be operated with one hand according to claim 3, characterized in that: Flexible protrusions (23) are provided at the water outlet (21) and air hole (22) of the sealing element (2), and the protrusions (23) abut against the movable piece (3).

5. A self-closing, leak-proof cap that can be operated with one hand according to claim 1, characterized in that: The upper part of the handle (4) is connected to the end of the movable piece (3) via a pivot (41). A support column (43) is provided in the middle of the handle (4), and a finger position (44) is provided in the lower part of the handle (4). By pressing the finger position (44), the handle (4) rotates with the support column (43) as the fulcrum, causing the movable piece (3) to slide.

6. A self-closing, leak-proof cap that can be operated with one hand according to claim 5, characterized in that: The handle (4) has protruding posts (42) on both sides of its upper part. When the handle (4) is located on the side of the cover (1), the handle (4) abuts against the limiting part (34) of the movable piece (3) through the protruding posts (42), restricting the movement of the handle (4). When the handle (4) is located on the top of the cover (5), the protruding posts (42) are stuck in the card hole (33), restricting the handle (4) from loosening.

7. A self-closing, leak-proof cap that can be operated with one hand according to claim 1, characterized in that: The bottom of the cover (5) is provided with a suspended column (54), the suspended column (54) is provided with a fixing hole (52), and the top of the fixing hole (52) is also provided with a removable rubber plug (53).

8. A cup operable with one hand, comprising the lid as described in any one of claims 1 to 7, characterized in that: It also includes a cup body (6), which is detachably connected to the lid body (1).

9. A cup that can be operated with one hand according to claim 8, characterized in that: The cover (1) is installed on the cup body (6) by a sealing ring. The outer periphery of the cup body (6) is also provided with a groove (61), and the support column (43) of the handle (4) abuts against the groove (61).

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