A packing cup with a straw and a theft-proof function

Abstract

The application discloses a packing cup with a straw and a theftproof function, which comprises a cup body, a straw is arranged on the cup body, the cup body and the straw are integrally injection molded, the lower end of the cup body is open, the upper end of the cup body is sealed, a heat-seal film is arranged on the open end, and an air hole is arranged on the sealed end; a sealing ring is assembled on the straw, a structure for sealing the air hole is arranged on the sealing ring; a cover is threadedly installed on the upper end of the straw, the cover presses the sealing ring so that the sealing ring seals the air hole in the state that the cover is screwed; the cup body is provided with the air hole, when a user drinks through the straw, the air hole can balance the air pressure inside and outside the cup body, and the user can avoid the labor of sucking due to negative pressure; the cover and the straw are threadedly connected, and a second sealing structure arranged on the inner top wall of the cover can seal the straw, so that the drink in the cup body can not leak in the storage and transportation process, and the drink can be sealed again during drinking, the user can drink in batches, and the drink can be prevented from being polluted.

Description

Technical Field

[0001] This invention relates to the field of food packaging technology, specifically to a packaging cup with a built-in straw and anti-theft function. Background Technology

[0002] Currently, most liquid foods such as yogurt are packaged in cups. To facilitate consumption, a separate pouch containing a straw is often attached to the cup or lid. This packaging method has the following problems: First, the straw is completely separated from the cup, making it easy to lose during storage and carrying; second, during use, problems may arise such as the straw being too soft to insert into the cup, improper operation causing the straw to be fully inserted, insufficient insertion depth, or detachment after insertion; third, negative pressure can easily form inside the cup during drinking, making it difficult to drink; and fourth, when drinking is interrupted, it is not possible to temporarily reseal the cup or protect the drinking tip of the straw.

[0003] In the prior art, utility model patent with patent number ZL201922284744.1 discloses a beverage packaging with a straw, including a container, a cap or lid, and a straw. The container is used to hold the beverage, the cap or lid is sealed or fixedly connected to the opening of the container, and the straw is placed in the container with one end of the straw bent at the corrugated section and located at the bottom of the container. It is configured such that when it is not opened, the tip of the other end of the straw is located at the opening, and it is also configured such that when it is opened, pressing the other end of the straw causes the other end of the straw to spring up under the action of the reverse elastic force of its own bent part and the tension of the corrugated section and extend out of the opening of the container for the drinker to drink.

[0004] This type of beverage packaging with a straw solves the problem of straws being easily lost during storage and transport. It also addresses issues such as straws not being able to be inserted into the cup, insufficient insertion depth, the potential for negative pressure inside the cup, and the inability to temporarily reseal the container. However, the solutions to the negative pressure and the inability to temporarily reseal the container are achieved through a separately openable lid. Since the lid is fully opened and the cup is left open for drinking, consumers can drink directly from the rim, rendering the straw unnecessary. This results in a redundant structure and poor practicality. Furthermore, the straw can become contaminated with the beverage, and the built-in independent straw also poses a risk of shifting during transport or becoming stuck and malfunctioning. Summary of the Invention

[0005] The purpose of this invention is to provide a packaging cup with a built-in straw and anti-theft function, aiming to improve the problems of existing cup beverage packaging straws being easily lost, having many insertion failures, being difficult to drink under negative pressure, not being able to be resealed, as well as the existing built-in straw packaging structure being redundant, straws being easy to shift and get stuck, and having poor practicality.

[0006] This invention is implemented as follows: A packaging cup with a built-in straw and anti-theft function includes a cup body, on which a straw is provided. The cup body and the straw are integrally injection molded. The lower end of the cup body is open, and the upper end is sealed. A heat-sealing film is provided at the open end, and an air hole is provided at the sealed end. A sealing ring is assembled on the straw, and the sealing ring is provided with a structure for sealing the air hole. A cap is threaded onto the upper end of the straw. The cap presses against the sealing ring so that the sealing ring seals the air hole when the cap is screwed on.

[0007] Furthermore, the lower end of the straw extends to the lower opening of the cup body, and the bottom plane of the straw is inclined, which has a certain angle with the plane of the cup opening.

[0008] Furthermore, a support step is provided on the tube body above the upper end of the cup body of the straw, and a socket groove is provided on the lower end face of the sealing ring. A socket hole is provided on the top wall of the socket groove. The sealing ring is sleeved on the straw through the socket hole and covered on the outer periphery of the support step through the socket groove. The sealing ring is pressed tightly on the support step by the cover.

[0009] Furthermore, multiple spring sheet structures are uniformly arranged on the sealing ring along the circumferential direction of its socket. The spring sheet structure is a thin-walled cantilever structure that extends spirally downward from the sealing ring. When the cover is tightened, the spring sheet structure is deformed by pressure and fits against the support step.

[0010] Furthermore, a boss is provided at the air hole of the cup body, the air hole passes through the boss, and a first sealing structure is provided on the sealing ring to seal and cooperate with the boss.

[0011] Furthermore, the first sealing structure includes a downwardly opening socket groove and a sealing head disposed on the top wall of the socket groove. The socket groove is fitted around the outer periphery of the boss, and the sealing head blocks the upper port of the air hole.

[0012] Furthermore, the upper end of the straw is provided with an external thread structure, the inner side wall of the lid is provided with an internal thread structure adapted to the external thread structure, and the inner top wall of the lid is provided with a second sealing structure for sealing the upper end of the straw.

[0013] Furthermore, the second sealing structure includes an inner plug structure adapted to the upper port of the straw, wherein the outer diameter of the inner plug structure is larger than the inner diameter of the upper port of the straw to form an interference fit with the upper port of the straw, and the lower end of the inner plug structure is provided with a transition fillet or chamfer for guiding the inner plug structure into the upper port of the straw; or, the second sealing structure includes an insertion part adapted to the upper port of the straw, wherein the insertion part is frustoconical, and its outer conical surface forms a conical seal with the inner wall of the upper port of the straw when the cap is tightened.

[0014] Furthermore, an anti-theft structure is provided between the lid and the straw.

[0015] Furthermore, the anti-theft structure includes a barb on the outer wall of the straw and an anti-theft piece at the lower end of the cap. One end of the anti-theft piece is connected to the cap, and the other end is bent inward and extended, with a connecting strip between the other end and the cap. The barb has a guide surface and a blocking surface. The guide surface is located on the screw-in side of the barb and is arc-shaped or inclined. The blocking surface is located on the screw-out side of the barb. The guide surface is used to guide the anti-theft piece past the barb when the cap is tightened, and the blocking surface is used to interfere with the anti-theft piece when the cap is unscrewed to break the connecting strip.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses an integral injection molding process to mold the cup body and straw, which not only avoids the problem of straw loss, but also avoids the insertion problems such as the straw not being able to be inserted into the cup or the insertion depth not being in place due to the use of an additional separate straw.

[0017] 2. The cup body of the present invention is provided with air holes. When the user drinks through the straw, the air holes can balance the air pressure inside and outside the cup in time, which can avoid the difficulty of drinking due to negative pressure.

[0018] 3. By extending the lower end of the straw to the lower opening of the cup body and setting the bottom plane of the straw as an inclined plane so that it has a certain angle with the plane of the cup opening, the present invention can ensure that the beverage in the cup can smoothly enter the straw and effectively avoid beverage residue.

[0019] 4. The lid and straw of the present invention are threaded together, and the second sealing structure provided on the inner top wall of the lid can seal the straw. This ensures that the beverage in the cup will not leak during storage and transportation, and can be resealed during drinking, making it convenient for users to drink in multiple times and avoiding contamination of the beverage.

[0020] 5. The present invention is provided with a sealing ring, and the sealing ring is provided with a first sealing structure for sealing the air hole. When the lid is pressed tightly against the sealing ring, the first sealing structure closes the air hole, which can prevent the beverage in the cup from leaking during storage and transportation.

[0021] 6. The sealing ring of the present invention is provided with a spring sheet structure. When the lid is opened, the sealing ring is pushed up by the spring sheet structure, so that the first sealing structure no longer seals the air hole and restores the ventilation state, which facilitates the balance of air pressure inside and outside the cup when drinking.

[0022] 7. By setting an anti-theft structure between the lid and the straw, the present invention can clearly inform consumers whether the lid has been opened, thus effectively protecting consumer rights. Attached Figure Description

[0023] Figure 1This is a three-dimensional structural diagram of the present invention from a first perspective; Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective; Figure 3 This is a three-dimensional structural diagram of the cup body and straw of the present invention; Figure 4 This is a cross-sectional schematic diagram of the cup body and straw of the present invention; Figure 5 yes Figure 3 Enlarged view of region A in the middle; Figure 6 This is a three-dimensional structural diagram of the sealing ring of the present invention from a first perspective; Figure 7 This is a three-dimensional structural schematic diagram of the sealing ring of the present invention from a second perspective; Figure 8 This is a three-dimensional structural diagram of the lid of the present invention from a first perspective; Figure 9 This is a three-dimensional structural diagram of the lid of the present invention from a second perspective; Figure 10 This is a cross-sectional schematic diagram of the cover character of the present invention.

[0024] In the diagram: 1. Cup body; 11. Air hole; 12. Boss; 2. Straw; 21. Support step; 22. External thread structure; 23. Barb; 231. Guide surface; 232. Blocking surface; 3. Heat sealing film; 4. Sealing ring; 41. First sealing structure; 411. Socket groove; 412. Sealing head; 42. Spring structure; 43. Socket slot; 44. Socket hole; 5. Cap; 51. Second sealing structure; 52. Anti-theft plate; 53. Connecting strip; 54. Internal thread structure. Detailed Implementation

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] like Figures 1-4As shown, a packaging cup with a built-in straw and anti-theft function includes a cup body 1, a straw 2, a heat-sealing film 3, a sealing ring 4, and a lid 5. The cup body 1 and straw 2 are integrally injection molded, thus preventing the straw 2 from being lost and eliminating the need for separate, individually packaged straws, reducing material consumption and assembly steps. The cup body 1 has an open bottom and a sealed top, with the heat-sealing film 3 at the open end and an air vent 11 at the sealed end to prevent negative pressure from forming when drinking from the cup through the straw 2. The lower end of the straw 2 extends to the lower opening of the cup body 1, and the bottom plane of the straw 2 is beveled, forming an angle with the cup rim plane, ensuring that the beverage can smoothly enter the straw 2.

[0027] like Figures 3-7 As shown, the upper end of the straw 2 is higher than the upper end of the cup body 1, and a supporting step 21 is provided on the tube body of the straw 2 above the upper end of the cup body 1. A reinforcing rib is provided between the lower end face of the supporting step 21 and the outer wall of the straw 2 to improve the strength, stability and support capacity of the supporting step 21. A socket groove 43 is provided on the lower end face of the sealing ring 4, and a socket hole 44 is provided on the top wall of the socket groove 43. The sealing ring is sleeved on the straw 2 through the socket hole 44 and covers the outer periphery of the supporting step 21 through the socket groove 43. A boss 12 is provided at the air hole 11 of the cup body 1, and the air hole 11 passes through the boss 12. A first sealing structure 41 is provided on the sealing ring 4 to seal with the boss 12. The first sealing structure 41 includes a downwardly opening socket 411 and a sealing head 412 disposed on the top wall of the socket 411. The socket 411 is fitted around the outer periphery of the boss 12, and the sealing head 412 is used to seal the upper port of the air hole 11. The cross-section of the supporting step 21 is non-circular, and the shape of the socket groove 43 matches the supporting step 21 to prevent the sealing ring 4 from rotating circumferentially relative to the suction tube 2, while ensuring that the sealing ring 4 effectively protects the boss 12.

[0028] like Figure 1 , Figure 5 and Figure 10As shown, the upper end of the straw 2 is provided with an external thread structure 22, which is located above the support step 21. The inner wall of the cover 5 is provided with an internal thread structure 54 adapted to the external thread structure 22, and the inner top wall of the cover 5 is provided with a second sealing structure 51 for sealing the upper port of the straw 2. The second sealing structure 51 can have various structural forms, such as an inner plug structure adapted to the upper port of the straw 2. The outer diameter of the inner plug structure is larger than the inner diameter of the upper port of the straw 2 to form an interference fit with the upper port of the straw 2. The lower end of the inner plug structure is provided with a transition fillet or chamfer to guide the inner plug structure into the upper port of the straw 2. When the cover 5 is tightened, the inner plug structure is inserted into the upper port of the straw 2 under the guidance of the transition fillet or chamfer, and a seal is achieved under the interference fit. Furthermore, to enhance the seal, a rubber gasket aligned with the upper port of the straw 2 can be provided on the inner top wall of the cover 5. When the cap 5 is tightened, the cap 5 presses against the sealing ring 4, so that the first sealing structure 41 on the sealing ring 4 seals the air hole 11.

[0029] like Figure 6 and Figure 7 As shown, two spring sheet structures 42 are evenly arranged on the sealing ring 4 along the circumferential direction of its socket 44. The spring sheet structure 42 is a thin-walled cantilever structure that spirals downward from the sealing ring 4. When the lid 5 is tightened, the spring sheet structure 42 is deformed by pressure and fits against the support step 21. In this way, the spring sheet structure 42 always applies an upward elastic preload to the sealing ring 4 after the lid 5 is tightened, which can effectively relax it. Moreover, when the lid 5 is opened, the force pressing on the sealing ring 4 disappears, and the sealing ring 4 can be lifted by the action of the spring sheet structure 42, so that the first sealing structure 41 no longer seals the air hole 11, restoring the ventilation state, which is convenient for balancing the air pressure inside and outside the cup when drinking.

[0030] In addition, such as Figure 1 , Figure 5 , Figure 8 and Figure 9As shown, an anti-theft structure is provided between the lid 5 and the straw 2. The anti-theft structure includes a barb 23 provided on the outer wall of the straw 2 and an anti-theft piece 52 provided at the lower end of the lid 5. The barb 23 is located between the support step 21 and the external thread structure 22. One end of the anti-theft piece 52 is connected to the lid 5, and the other end is bent inward and extended, with a connecting strip 53 between this end and the lid 5. The barb 23 has a guide surface 231 and a blocking surface 232. The guide surface 231 is located on the screw-in side of the barb 23 and is arc-shaped, while the blocking surface 232 is located on the screw-out side of the barb 23. The guide surface 231 is used to guide the anti-theft piece 52 past the barb 23 when the lid 5 is tightened, and the blocking surface 232 is used to interfere with the anti-theft piece 52 when the lid 5 is unscrewed to break the connecting strip 53. With the above-described design, tightening the lid 5 will not damage the connecting strip 53, while loosening the lid 5 will cause the connecting strip 53 to break under the action of the barb 23, thus clearly indicating that the packaging cup has been opened. Once the connecting strip 53 breaks, it means that the lid 5 has been opened, or at least loosened. Even if the lid 5 is only loosened, it will damage the sealing structure of the air hole 11 and the straw 2. Therefore, by setting up an anti-theft structure, consumers can be clearly informed whether the lid 5 has been loosened or opened, thus effectively protecting consumer rights.

[0031] In summary, this invention, by integrally injection molding the cup body 1 and the straw 2, not only avoids the problem of straw 2 being lost, but also avoids insertion problems such as the straw not being able to be inserted into the cup or not being inserted deep enough due to the use of an additional separate straw. The cup body 1 is provided with an air hole 11, which can promptly balance the air pressure inside and outside the cup body 1 when the user drinks through the straw 2, preventing difficulty in drinking due to negative pressure. The lid 5 and the straw 2 are threaded together, and the second sealing structure 51 provided on the inner top wall of the lid 5 can seal the straw 2, thus ensuring that the beverage in the cup body 1 will not leak during storage and transportation, and allowing for secondary sealing during drinking, facilitating multiple servings and preventing beverage contamination.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A packaging cup with a built-in straw and anti-theft function, comprising a cup body, characterized in that, The cup body is provided with a straw, and the cup body and the straw are integrally injection molded. The lower end of the cup body is open and the upper end is sealed. The open end is provided with a heat-sealing film, and the sealed end is provided with an air hole. The straw is equipped with a sealing ring, and the sealing ring is provided with a structure for sealing the air hole. The upper end of the straw is threaded with a cap, and the cap presses the sealing ring so that the sealing ring seals the air hole when the cap is screwed on.

2. The packaging cup with a built-in straw and anti-theft function according to claim 1, characterized in that, The lower end of the straw extends to the lower opening of the cup body, and the bottom plane of the straw is inclined, which has a certain angle with the plane of the cup opening.

3. A packaging cup with a built-in straw and anti-theft function according to claim 1, characterized in that, The straw has a support step on its tube body above the upper end of the cup body. The lower end face of the sealing ring has a socket groove. The top wall of the socket groove has a socket hole. The sealing ring is sleeved on the straw through the socket hole and covers the outer periphery of the support step through the socket groove. The sealing ring is pressed tightly onto the support step by the cover.

4. A packaging cup with a built-in straw and anti-theft function according to claim 3, characterized in that, Multiple spring sheet structures are evenly arranged on the sealing ring along the circumferential direction of its socket. The spring sheet structure is a thin-walled cantilever structure that extends spirally downward from the sealing ring. When the cover is tightened, the spring sheet structure is deformed by pressure and fits against the support step.

5. A packaging cup with a built-in straw and anti-theft function according to claim 1, characterized in that, A boss is provided at the air hole of the cup body, the air hole passes through the boss, and a first sealing structure is provided on the sealing ring to seal and cooperate with the boss.

6. A packaging cup with a built-in straw and anti-theft function according to claim 5, characterized in that, The first sealing structure includes a downward-opening socket groove and a sealing head disposed on the top wall of the socket groove. The socket groove is fitted around the outer periphery of the boss, and the sealing head blocks the upper port of the air hole.

7. A packaging cup with a built-in straw and anti-theft function according to claim 1, characterized in that, The upper end of the straw is provided with an external thread structure, the inner side wall of the lid is provided with an internal thread structure that is adapted to the external thread structure, and the inner top wall of the lid is provided with a second sealing structure for sealing the upper end of the straw.

8. A packaging cup with a built-in straw and anti-theft function according to claim 7, characterized in that, The second sealing structure includes an inner plug structure adapted to the upper port of the straw. The outer diameter of the inner plug structure is larger than the inner diameter of the upper port of the straw to form an interference fit with the upper port of the straw. The lower end of the inner plug structure is provided with a transition fillet or chamfer for guiding the inner plug structure into the upper port of the straw. Alternatively, the second sealing structure includes an insertion part adapted to the upper port of the straw. The insertion part is frustoconical, and its outer conical surface forms a conical seal with the inner wall of the upper port of the straw when the cap is tightened.

9. A packaging cup with a built-in straw and anti-theft function according to any one of claims 1-8, characterized in that, An anti-theft structure is provided between the lid and the straw.

10. A packaging cup with a built-in straw and anti-theft function according to claim 9, characterized in that, The anti-theft structure includes a barb on the outer wall of the straw and an anti-theft plate at the lower end of the cap. One end of the anti-theft plate is connected to the cap, and the other end is bent inward and extended, with a connecting strip between the other end and the cap. The barb has a guide surface and a blocking surface. The guide surface is located on the screw-in side of the barb and is arc-shaped or inclined. The blocking surface is located on the screw-out side of the barb. The guide surface is used to guide the anti-theft plate past the barb when the cap is tightened, and the blocking surface is used to interfere with the anti-theft plate when the cap is unscrewed to break the connecting strip.

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