A cup lid connection structure and a cup

Abstract

This utility model provides a cup lid connection structure and a cup, including a screw-in portion disposed circumferentially on the outer wall of the cup lid and a screw-in component disposed circumferentially on the inner wall of the cup. The cup lid and the cup body have a screw-in state and a decoupled state, which are switched by changing the fit between the screw-in portion and the screw-in component. The screw-in portion includes a locking structure that matches the screw-in component. When the screw-in component is embedded in the locking structure, the cup lid and the cup body are in the screw-in state, and the locking structure can constrain three degrees of freedom of the screw-in component, one of which is constrained vertically downward to limit the downward movement of the screw-in component. When the screw-in component is separated from the screw-in portion, the cup lid and the cup body are in the decoupled state. This solution achieves stable connection, hygiene and easy cleaning, leak prevention and resistance to external forces, improves the safety and practicality of the cup, and has a simple structure that is easy to manufacture.

Description

Technical Field

[0001] This utility model belongs to the technical field of cup lid and cup body connection technology, and particularly relates to a cup lid connection structure and a cup. Background Technology

[0002] In the field of everyday drinking water appliances, the connection structure between the cup body and the lid is a core component affecting the user experience, hygiene, safety, and portability of the cup. Its design rationality directly relates to the user's needs and health protection. Currently, the existing technologies for connecting the cup body and lid mainly fall into two categories: threaded connections and snap-fit ​​connections. While both types of connections meet basic connection requirements to a certain extent, they both have unavoidable technical defects during long-term use, failing to simultaneously ensure hygiene, connection stability, and ease of use. On the one hand, the threaded connection between the cup body and lid, secured by the engagement of the external thread at the cup rim and the internal thread at the lid, provides strong stability, preventing the lid from easily detaching during normal use. Furthermore, the seal can be adjusted by varying the thread engagement depth, making it widely used in insulated cups, sports water bottles, and other items intended for long-term carrying. However, the inherent defects of threaded connections mean that the gaps and grooves formed at the thread engagement point easily trap dirt and grime. During daily use, beverage residues (such as tea stains, coffee stains, and milk residue) seep into these gaps. Due to the dense, uneven surface of the thread structure, conventional cleaning methods (such as rinsing with water or wiping with a cloth) are insufficient to completely remove these residues. Over time, these residues can breed bacteria, mold, and other microorganisms, not only producing unpleasant odors and affecting the user experience, but also potentially entering the body through beverages during subsequent use, posing a health hazard to the user. On the other hand, cups and lids that use a snap-fit ​​connection typically achieve initial positioning by having the lid's annular protrusion engage with the cup's rim. A sealing element (such as a silicone sealing ring) inside the lid then fills the gap between the cup body and lid to achieve a seal. This connection method is simple in structure, low in production cost, and easy to open and close, as well as easy to clean. It is commonly used in disposable water cups and household mugs where frequent carrying is not required. However, the core problem with the snap-fit ​​connection lies in its extremely poor stability. It relies solely on the friction generated by the elastic deformation of the seal and the shallow positioning of the snap-fit ​​structure for fixation. When moving the cup, the cup body must be used as the gripping force. If the lid is used as the force point to try to lift the entire cup, the lid will separate from the cup body due to the insufficient load-bearing capacity of the connection structure, causing the cup to fall, resulting in liquid spillage or even damage to the cup. When the cup is subjected to external forces (such as collision, tipping, or squeezing), the lid is easy to detach from the cup body, causing the liquid in the cup to spill accidentally. This not only wastes the beverage but may also damage surrounding items (such as electronic devices, paper documents, etc.) due to liquid leakage. This problem is particularly prominent when carrying the cup (such as putting it in a backpack or moving it by hand). In summary, both of the existing mainstream connection methods between the cup body and lid have significant shortcomings. While threaded connections are stable, they suffer from poor hygiene and are difficult to clean; while snap-fit ​​connections are convenient, they lack stability and are prone to leakage. Neither can meet users' comprehensive needs for a cup that is "stable, hygienic, easy to clean, leak-proof, and resistant to external forces." Therefore, there is an urgent need for a new connection structure between the cup body and lid to address the aforementioned technical deficiencies in existing technologies and improve the safety and practicality of using the cup. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a cup lid connection structure and a cup that achieves stable connection, hygiene and easy cleaning, leak prevention and resistance to external forces, thereby improving the safety and practicality of the cup. Furthermore, the structure is simple and easy to manufacture.

[0004] The technical solution of this utility model is as follows: This utility model provides a cup lid connection structure, including a screw-in part arranged on the outer wall of the cup lid along the circumference of the cup lid, and a screw-in component arranged on the inner wall of the cup body along the circumference of the cup body. The cup lid and the cup body have a screw-in state and a disengaged state. The switching between the screw-in state and the disengaged state is achieved by changing the cooperation relationship between the screw-in part and the screw-in component. The screw-on part includes a locking structure that matches the screw-on component. When the screw-on component is embedded in the locking structure, the cup lid and the cup body are in the screw-on state, and the locking structure can constrain three degrees of freedom of the screw-on component, one of which is constrained vertically downward to limit the downward movement of the screw-on component. When the screw-on component is separated from the screw-on part, the cup lid and the cup body are in the separated state.

[0005] Furthermore, a sealing element is circumferentially provided on the outer wall of the cup lid, the sealing element being located above the locking structure, the locking structure being a concave structure with an opening facing upward, to the left, or to the right.

[0006] Furthermore, when the locking structure is a concave structure with the opening facing upward, the screw-in portion further includes a sliding structure, the sliding structure having a separating end and a locking end, the separating end and the locking end being located at opposite ends of the sliding structure, and the locking end being connected to the locking structure; When the engaging member is embedded in the locking structure, the locking end is higher than the lowest end of the engaging member; When the engaging member is slidably connected to the sliding structure, the seal is in a compressed state; when the engaging member is embedded in the locking structure, the seal is in a compressed state or a relaxed state in contact with the engaging member, so as to achieve locking of the four degrees of freedom of the engaging member.

[0007] Furthermore, the height of the separating end is lower than or equal to the height of the locking end.

[0008] Furthermore, when the height of the separating end is lower than the height of the locking end, the height from the separating end to the locking end changes gradually.

[0009] Furthermore, when the locking structure is a concave structure with the opening facing upward, the engaging portion further includes a stop structure for stopping the engaging member during the engaging process, and the stop structure and the sliding structure are respectively disposed at both ends of the locking structure.

[0010] Furthermore, in the case where the locking structure is a concave structure with the opening facing upwards: The screw-on portion includes a locking structure, a sliding structure, and a stop structure to achieve one-way screw-on locking between the cup lid and the cup body; or, The screw-on portion includes two locking structures, two sliding structures, and a stop structure. The two locking structures and the two sliding structures are symmetrically distributed about the stop structure to achieve bidirectional screw-on locking between the cup lid and the cup body. or, The screw-on portion includes two locking structures, two sliding structures, and two stop structures. The two stop structures are arranged adjacent to each other, and the two locking structures and the two sliding structures are symmetrically distributed about the center line between the two adjacent stop structures, so as to realize bidirectional screw-on locking between the cup lid and the cup body.

[0011] Furthermore, in the case where the locking structure is a concave structure with the opening facing left or right: The screw-on portion includes a locking structure to achieve one-way screw-on locking between the cup lid and the cup body; or, The screw-on part includes two locking structures, which are arranged adjacent to each other and have opposite openings, so as to realize bidirectional screw-on locking between the cup lid and the cup body.

[0012] Furthermore, the number of the engaging portions and the number of the engaging components are in a one-to-one correspondence or satisfy a preset ratio correspondence.

[0013] This utility model also provides a cup, including a cup body and a cup lid, wherein the cup body and the cup lid are connected by any of the cup lid connection structures described above.

[0014] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art: By changing the relationship between the screw-on part on the lid and the screw-on part on the body, the lid and body can be switched between screw-on and unscrewed states. Users only need to rotate once to change the relationship between the lid and body. This is simpler than threaded connections and more stable than snap-fit ​​connections.

[0015] Because the locking structure of the screw-on part can constrain the three degrees of freedom of the screw-on component, one of which is constrained vertically downwards to limit the downward movement of the screw-on component, it can provide a relatively stable connection, preventing the lid from easily coming off during normal use. In the screw-on state, the elastic sealing element on the lid and the rim of the cup body can achieve a sealing effect, and the cooperation between the screw-on part and the screw-on component can provide a relatively stable connection. Therefore, the connection between the lid and the cup body can meet certain requirements for leak prevention and resistance to external forces. Compared with the defects of easy leakage of the snap-on connection, it has obvious advantages and achieves the effect of improving the safety and practicality of the cup.

[0016] Compared to threaded connections, which tend to accumulate dirt and grime in the gaps and grooves formed at the thread engagement points after prolonged use, the design of the engagement part and the area around the engagement component in this invention has larger gaps, making it easier to clean and thus achieving a more hygienic effect. This enhances the safety and practicality of the cup.

[0017] The screw-in part and screw-in component of this utility model have a simple structure and are easy to manufacture. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a cup provided for an embodiment of this utility model; Figure 2 A three-dimensional structural diagram of a cup lid provided for an embodiment of this utility model; Figure 3 A perspective structural diagram of another cup provided for an embodiment of this utility model; Figure 4 A perspective view of another cup lid provided for an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: Cup lid; 11. Screw-on part; 111. Locking structure; 112. Sliding structure; 113. Stop structure; 12. Sealing element; 13. Direct drinking spout; Cup body; 21. Screw-in parts. Detailed Implementation

[0020] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

[0021] First Embodiment Please see Figures 1-2 This embodiment provides a cup lid connection structure that uses a one-way screw-on method to achieve mutual locking between the cup lid 1 and the cup body 2. It includes a screw-on part 11 arranged circumferentially on the outer wall of the cup lid 1 and a screw-on component 21 arranged circumferentially on the inner wall of the cup body 2. The cup lid 1 and the cup body 2 have a screw-on state and a separated state. The switching between the screw-on state and the separated state is achieved by the change of the cooperation relationship between the screw-on part 11 and the screw-on component 21. The number of engaging parts 11 and the number of engaging components 21 are in a one-to-one correspondence or a correspondence that satisfies a preset ratio; optionally, the number of engaging parts 11 can be equal to or more than the number of engaging components 21, preferably, the number of engaging components 21 is at least two. The screw-fitting part 11 includes a locking structure 111, which matches the screw-fitting part 21. When the screw-fitting part 21 is inserted into the locking structure 111, the cup lid 1 and the cup body 2 are in a screw-fitting state, and the locking structure 111 can constrain the three positional degrees of freedom of the screw-fitting part 21, one of which is constrained vertically downward to limit the downward movement of the screw-fitting part 21. When the screw-fitting part 21 is separated from the screw-fitting part 11, the cup lid 1 and the cup body 2 are in a separated state. A sealing element 12 is also circumferentially provided on the outer wall of the cup lid 1, and the sealing element 12 is located above the locking structure 111; The locking structure 111 is a concave structure with an opening facing upwards, to the left, or to the right.

[0022] In an optional embodiment, the locking structure 111 is a concave structure with the opening facing upward. In this case, the width and height of the locking structure 111 are matched with the screw-in member 21. The screw-in part 11 also includes a sliding structure 112 for slidingly connecting with the screw-in member 21 during the screw-in or screw-out process and a stop structure 113 for stopping the screw-in member 21 during the screw-in process. The stop structure 113 and the sliding structure 112 are respectively disposed at both ends of the locking structure 111. The overall structure of the screw-in part 11 is a horizontally arranged L-shaped structure. When the engaging member 21 is slidably connected to the sliding structure 112, the sealing member 12 is in a compressed state; when the engaging member 21 is embedded in the locking structure 111, the sealing member 12 is in a compressed state or a relaxed state in contact with the engaging member 21, so as to achieve locking of the four degrees of freedom of the engaging member 21; the four positions refer to the four positions of up, down, left and right in a broad sense. The screw-on part 11 includes a locking structure 111, a sliding structure 112 and a stop structure 113 to realize one-way screw-on locking between the cup lid 1 and the cup body 2; The sliding structure 112 has a separating end and a locking end, which are located at the two ends of the sliding structure 112 respectively. The locking end is connected to the locking structure 111. The height of the separating end is lower than or equal to the height of the locking end. When the height of the separating end is lower than the height of the locking end, the height from the separating end to the locking end changes gradually. When the engaging member 21 is embedded in the locking structure 111, the locking end is higher than the lowest end of the engaging member 21.

[0023] In another optional embodiment, the locking structure 111 is a concave structure with an opening facing left or right. In this case, the overall structure of the screw-in part 11 is a transversely arranged U-shaped structure. Each screw-in part 11 includes a locking structure 111 to achieve one-way screw-in locking between the cup lid 1 and the cup body 2. Preferably, the width of the locking structure 111 is greater than the width of the screw-in part 21, and the height of the locking structure 111 matches the height of the screw-in part 21. At this time, the screw-in part 21 achieves locking of three degrees of freedom, where the three positions refer to the three positions of up, down, left, or up, down, and right in a broad sense. At the same time, by designing the tolerance between the height of the locking structure 111 and the height of the screw-in part 21, or by embedding an elastic element inside the locking structure 111, the screw-in part 21 can be subjected to friction or elastic force from the upper and lower end faces when it is located inside the locking structure 111, thereby achieving locking of three degrees of freedom and relative locking of one degree of freedom.

[0024] In a specific implementation scenario, both the engagement part 11 and the engagement component 21 will adopt process-oriented designs, such as rounded corners and transition arcs, to reduce structural wear during the engagement process and extend service life.

[0025] Second Embodiment Please see Figures 1-2 This embodiment provides a cup, including a cup body 2 and a cup lid 1, wherein the cup body 2 and the cup lid 1 are connected by the cup lid connection structure described in the first embodiment; The sealing element 12 contacts the rim of the cup body 2 when the lid 1 is screwed onto the cup body 2 to achieve further sealing of the cup; the upper surface of the lid 1 is also provided with a drinking spout 13, which can be a flip-top design.

[0026] Third Embodiment Please see Figures 3-4 This embodiment provides another cup lid connection structure, which uses a two-way screw-on method to achieve mutual locking between the cup lid 1 and the cup body 2. That is, the user can achieve mutual locking between the cup lid 1 and the cup body 2 by screwing on clockwise or counterclockwise. It includes a screw-on part 11 arranged circumferentially on the outer wall of the cup lid 1 and a screw-on component 21 arranged circumferentially on the inner wall of the cup body 2. The cup lid 1 and the cup body 2 have a screw-on state and a disengaged state. The cup lid 1 and the cup body 2 switch between the screw-on state and the disengaged state by changing the fit between the screw-on part 11 and the screw-on component 21. The number of engaging parts 11 and the number of engaging components 21 are in a one-to-one correspondence or a correspondence that satisfies a preset ratio; optionally, the number of engaging parts 11 can be equal to or more than the number of engaging components 21, preferably, the number of engaging components 21 is at least two. The screw-fitting part 11 includes a locking structure 111, which matches the screw-fitting part 21. When the screw-fitting part 21 is inserted into the locking structure 111, the cup lid 1 and the cup body 2 are in a screw-fitting state, and the locking structure 111 can constrain the three positional degrees of freedom of the screw-fitting part 21, one of which is constrained vertically downward to limit the downward movement of the screw-fitting part 21. When the screw-fitting part 21 is separated from the screw-fitting part 11, the cup lid 1 and the cup body 2 are in a separated state. A sealing element 12 is also circumferentially provided on the outer wall of the cup lid 1, and the sealing element 12 is located above the locking structure 111; The locking structure 111 is a concave structure with an opening facing upwards, to the left, or to the right.

[0027] In an optional embodiment, the locking structure 111 is a concave structure with the opening facing upward. In this case, the width and height of the locking structure 111 are matched with the screw-in member 21. The screw-in part 11 also includes a sliding structure 112 for slidingly connecting with the screw-in member 21 during the screw-in or screw-out process and a stop structure 113 for stopping the screw-in member 21 during the screw-in process. The stop structure 113 and the sliding structure 112 are respectively disposed at both ends of the locking structure 111. The overall structure of the screw-in part 11 is a horizontally arranged L-shaped structure. When the engaging member 21 is slidably connected to the sliding structure 112, the sealing member 12 is in a compressed state; when the engaging member 21 is embedded in the locking structure 111, the sealing member 12 is in a compressed state or a relaxed state in contact with the engaging member 21, so as to achieve locking of the four degrees of freedom of the engaging member 21; the four positions refer to the four positions of up, down, left and right in a broad sense. The screw-on part 11 includes two locking structures 111, two sliding structures 112 and a stop structure 113. The two locking structures 111 and the two sliding structures 112 are symmetrically distributed about the stop structure 113 to achieve bidirectional screw-on locking between the cup lid 1 and the cup body 2. or, The screw-fit part 11 includes two locking structures 111, two sliding structures 112 and two stop structures 113. The two stop structures 113 are arranged adjacent to each other. The two locking structures 111 and the two sliding structures 112 are symmetrically distributed about the center line between the two adjacent stop structures 113, so as to realize the bidirectional screw-fit locking between the cup lid 1 and the cup body 2. The sliding structure 112 has a separating end and a locking end, which are located at the two ends of the sliding structure 112 respectively. The locking end is connected to the locking structure 111. The height of the separating end is lower than or equal to the height of the locking end. When the height of the separating end is lower than the height of the locking end, the height from the separating end to the locking end changes gradually. When the engaging member 21 is embedded in the locking structure 111, the locking end is higher than the lowest end of the engaging member 21.

[0028] In another optional embodiment, the locking structure 111 is a concave structure with an opening facing left or right. In this case, the overall structure of the screw-fit part 11 is a transversely arranged U-shaped structure. One screw-fit part 11 includes two locking structures 111, which are arranged adjacently and have opposite openings to achieve bidirectional screw-fit locking between the cup lid 1 and the cup body 2. Preferably, the width of the locking structure 111 is greater than the width of the screw-fit part 21, and the height of the locking structure 111 matches the height of the screw-fit part 21. At this time, the screw-fit part 21 achieves locking of three degrees of freedom, where the three positions refer to the three positions of up, down, left or up, down and right in a broad sense. At the same time, by designing the tolerance between the height of the locking structure 111 and the height of the screw-fit part 21 or by embedding an elastic element inside the locking structure 111, the screw-fit part 21 can be subjected to friction or elastic force from the upper and lower end faces when it is located in the locking structure 111, thereby achieving locking of three degrees of freedom and relative locking of one degree of freedom.

[0029] In a specific implementation scenario, both the engagement part 11 and the engagement component 21 will adopt process-oriented designs, such as rounded corners and transition arcs, to reduce structural wear during the engagement process and extend service life.

[0030] Fourth embodiment Please see Figures 3-4 This embodiment provides another type of cup, including a cup body 2 and a cup lid 1. The cup body 2 and the cup lid 1 are connected by the cup lid connection structure described in the third embodiment. The sealing element 12 contacts the rim of the cup body 2 when the lid 1 is screwed onto the cup body 2 to achieve further sealing of the cup; the upper surface of the lid 1 is also provided with a drinking spout 13, which can be a flip-top design.

[0031] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features of this utility model can be arbitrarily combined with each other.

Claims

1. A cup lid connecting structure, characterized in that, The cup lid includes a screw-on portion disposed on the outer wall of the cup lid along the circumference of the cup lid, and a screw-on component disposed on the inner wall of the cup body along the circumference of the cup body. The cup lid and the cup body have a screw-on state and a disengaged state. The switching between the screw-on state and the disengaged state is achieved by changing the fit between the screw-on portion and the screw-on component. The engaging portion includes a locking structure that matches the engaging member; When the screw-on component is embedded in the locking structure, the cup lid and the cup body are in the screw-on state and the locking structure can constrain the three positional degrees of freedom of the screw-on component, one of which is constrained vertically downward to limit the downward movement of the screw-on component; when the screw-on component is separated from the screw-on component, the cup lid and the cup body are in the separated state.

2. The cup lid connecting structure as described in claim 1, characterized in that, A sealing element is also circumferentially provided on the outer wall of the cup lid. The sealing element is located above the locking structure, which is a concave structure with an opening facing upward, to the left, or to the right.

3. The cup lid connecting structure as described in claim 2, characterized in that, When the locking structure is a concave structure with the opening facing upward, the screw-in part further includes a sliding structure. The sliding structure has a separating end and a locking end, the separating end and the locking end are respectively located at the two ends of the sliding structure, and the locking end is connected to the locking structure. When the engaging member is embedded in the locking structure, the locking end is higher than the lowest end of the engaging member; When the screw-on component is slidably connected to the sliding structure, the seal is in a compressed state; When the engaging member is embedded in the locking structure, the seal is in a compressed state or a relaxed state in contact with the engaging member, so as to lock the four degrees of freedom of the engaging member.

4. The cup lid connecting structure as described in claim 3, characterized in that, The height of the separating end is lower than or equal to the height of the locking end.

5. The cup lid connecting structure as described in claim 4, characterized in that, When the height of the separating end is lower than the height of the locking end, the height from the separating end to the locking end changes gradually.

6. The cup lid connecting structure as described in claim 3, characterized in that, When the locking structure is a concave structure with the opening facing upward, the engaging part further includes a stop structure for stopping the engaging member during the engaging process, and the stop structure and the sliding structure are respectively disposed at both ends of the locking structure.

7. The cup lid connecting structure as described in claim 6, characterized in that, In the case where the locking structure is a concave structure with the opening facing upwards: The screw-on portion includes a locking structure, a sliding structure, and a stop structure to achieve one-way screw-on locking between the cup lid and the cup body; or, The screw-on portion includes two locking structures, two sliding structures, and a stop structure. The two locking structures and the two sliding structures are symmetrically distributed about the stop structure to achieve bidirectional screw-on locking between the cup lid and the cup body. or, The screw-on portion includes two locking structures, two sliding structures, and two stop structures. The two stop structures are arranged adjacent to each other, and the two locking structures and the two sliding structures are symmetrically distributed about the center line between the two adjacent stop structures, so as to realize bidirectional screw-on locking between the cup lid and the cup body.

8. The cup lid connecting structure as described in claim 2, characterized in that, In the case where the locking structure is a concave structure with the opening facing left or right: The screw-on portion includes a locking structure to achieve one-way screw-on locking between the cup lid and the cup body; or, The screw-on part includes two locking structures, which are arranged adjacent to each other and have opposite openings, so as to realize bidirectional screw-on locking between the cup lid and the cup body.

9. The cup lid connecting structure as described in any one of claims 1-8, characterized in that, The number of the engagement portions and the number of the engagement components are in a one-to-one correspondence or satisfy a preset ratio.

10. A cup, comprising a cup body and a cup lid, characterized in that, The cup body and the cup lid are connected using the cup lid connection structure as described in any one of claims 1-9.

Images