Water locking sealing cover

Abstract

The utility model belongs to the technical field of wet tissue flexible packaging bags, and mainly relates to a water locking sealing cover which comprises a top cover and a base, a first buckling part is arranged on the base, a second buckling part is arranged on the top cover, and when the top cover is closed on the base, the first buckling part and the second buckling part are correspondingly connected in an inserted mode. The first buckling part is an annular protrusion which is of a trapezoidal section structure and is narrow in the upper portion and wide in the lower portion, and an annular outer eight-groove matched with the annular protrusion in an inserted mode is formed in the second buckling part. And lock catch assemblies are assembled at the front ends of the top cover and the base, so that the top cover and the base form a locking state when being closed. By accurately calculating the structural parameters and geometrical shapes of the first buckling part and the second buckling part, the opening and closing friction force is effectively reduced, the opening and closing smoothness is improved, meanwhile, through the synergistic effect with the lock catch assembly, multiple sealing protection can be achieved, accurate sealing fit is achieved, and the sealing performance is improved. Therefore, a good sealing effect can be independently kept without depending on an unsealing paste of a wet tissue soft packaging bag, and long-acting moisture preservation, sanitation and safety of the wet tissue are ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of wet wipe soft packaging bags, and mainly relates to a water-locking and sealing cap. Background Technology

[0002] Wet wipes are widely used in daily cleaning and personal care. They contain a certain amount of water and moisturizing ingredients, making them soft, moist, and effective at cleaning.

[0003] To prevent the moisture from evaporating and to avoid the wipes drying out and hardening, thus affecting their effectiveness, wet wipes are often sealed in soft packaging bags.

[0004] Currently, the sealing caps on common wet wipe packaging bags on the market typically use a simple flip-top design, which offers only average sealing performance. This results in issues such as the wipes drying out easily, poor moisturizing effect, and easy bacterial growth due to incomplete sealing. Furthermore, the existing flip-top and base sealing structure is relatively simple, easily generating excessive localized stress and frictional resistance when closed, making it difficult for users to open and negatively impacting the user experience. Therefore, a new type of water-locking sealing cap structure is needed to improve upon these problems. Utility Model Content

[0005] This utility model provides a water-locking sealing cap to solve the problems of poor sealing effect and non-coherent sealing structure in the prior art for wet wipe packaging.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A water-locking sealing cap includes a top cover and a base. The base has a first fastening part, and the top cover has a second fastening part. The second fastening part corresponds to the first fastening part, so that when the top cover is closed on the base, the first fastening part and the second fastening part are inserted into each other. The first fastening part is an annular protrusion with a trapezoidal cross-section structure that is narrow at the top and wide at the bottom. The second fastening part has an annular outer eight grooves that are inserted into the annular protrusion.

[0008] The top cover and the front end of the base are equipped with a locking assembly so that the top cover and the base are locked when closed.

[0009] It has the following beneficial effects: By accurately calculating the structural parameters and geometry of the first and second fastening parts, the opening and closing friction is effectively reduced, the opening and closing smoothness is improved, and a precise sealing fit is achieved; at the same time, through the synergistic effect with the locking assembly, multiple sealing protections can be achieved, and even without relying on the opening sticker of the wet wipe soft packaging bag, it can maintain a good sealing effect independently, ensuring the long-lasting moisturizing and hygienic safety of the wet wipes; this not only effectively improves the overall integrity and reliability of the product, avoiding the situation where the sealing effect is reduced due to assembly errors or loose parts, but also significantly reduces production costs and improves production efficiency, making it especially suitable for large-scale mass production.

[0010] Furthermore, the annular protrusion has inclined sides at both ends at 2-3 degrees inward, so that the top cover and the base gradually fit together when closed.

[0011] It has the following beneficial effects: the inclined side allows the top cover and base to achieve a gradual sealing when closed, while reducing the friction when opening, making it easier for users to open.

[0012] Furthermore, the annular protrusion has inclined sides at both ends at an inward angle of 2.5 degrees.

[0013] Furthermore, the upper part of the annular protrusion is provided with a rounded chamfer.

[0014] It has the following beneficial effects: the rounded chamfer can turn the sharp edges of the base into a smooth transition, reducing the risk of scratches and cuts to people; at the same time, the rounded chamfer can guide the top cover to fit the base accurately, making installation easier; the rounded chamfer can make the force distribution more even, reduce stress concentration, and improve the fatigue resistance and reliability of the base; the rounded chamfer can make the appearance of the base smoother and more streamlined, enhancing the overall aesthetics of the base.

[0015] Furthermore, the radius of curvature of the chamfered arc is 0.5mm-2.0mm.

[0016] Furthermore, the top cover is provided with a protrusion, and the annular outer eight grooves are arranged on the protrusion.

[0017] Furthermore, the groove wall of the annular outer eight groove is an inclined surface, and the groove wall of the annular outer eight groove is inclined outward from the bottom of the groove. The inclination angle of the groove wall of the annular outer eight groove is smaller than the inclination angle of the inclined side surface.

[0018] It has the following beneficial effects: it facilitates better adhesion and sealing.

[0019] Furthermore, the locking assembly includes an upper triangular protrusion fixedly mounted on the base and a lower triangular protrusion elastically mounted on the top cover. Both the upper and lower triangular protrusions protrude horizontally and in opposite directions. When the top cover and the base are closed, the lower triangular protrusion fits against the upper triangular protrusion and extends below the upper triangular protrusion to form a locking state between the base and the top cover.

[0020] Furthermore, the top cover is hinged to the base, and the top cover and the base are integrally injection molded structures.

[0021] It has the following benefits: the one-piece injection molding process makes the product seamless, with better sealing effect and higher structural strength, while improving the user experience and safety of consumers. Attached Figure Description

[0022] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model when unfolded;

[0024] Figure 2 for Figure 1 A bottom view;

[0025] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0026] Figure 4 This is a schematic diagram of the structure of this utility model when it is closed;

[0027] Figure 5 for Figure 4 A sectional view;

[0028] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0029] Figure 7 This is a structural diagram of the locking assembly.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Top cover; 2. Base; 3. Annular protrusion; 4. Protrusion; 5. Locking assembly; 6. Cavity; 7. Annular outer eight groove; 8. Upper triangular protrusion; 9. Easy-open part; 10. Lower triangular protrusion. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] The following describes various non-limiting embodiments of this utility model. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] like Figures 1-5 As shown, a water-locking sealing cap is used on a wet wipes soft packaging bag to seal the wet wipes soft packaging bag. In this embodiment, the water-locking sealing cap includes a top cover 1 and a base 2 that are hinged to each other. In this embodiment, the hinged connection only refers to the fact that the top cover 1 and the base 2 can rotate relative to each other. A first fastening part is arranged on the base 2, which is an annular protrusion 3 with a trapezoidal cross-section structure that is narrower at the top and wider at the bottom. A second fastening part is arranged on the top cover 1, which includes a protrusion 4 and an annular outer eight-groove groove 7 arranged on the protrusion 4. The annular outer eight-groove groove 7 corresponds to the annular protrusion 3, so that when the top cover 1 is closed on the base 2, the annular protrusion 3 and the annular outer eight-groove groove 7 are correspondingly inserted to form a sealed state. The central area surrounded by the annular protrusion 3 is a cavity 6. When the water-locking sealing cap is assembled on the wet wipes soft packaging bag and the top cover 1 and the base 2 are closed, the cavity 6 is a sealed space, in which the opening sticker of the wet wipes soft packaging bag is also located. In this way, when the top cover 1 and the base 2 are closed, even if the opening sticker is opened, the water-locking seal can still seal the wet wipe soft packaging bag.

[0035] In this embodiment, the top cover 1 and the base 2 are equipped with a locking assembly 5 at their front ends, so that the top cover 1 and the base 2 are locked together when closed, which also helps to close and seal the top cover 1 and the base 2.

[0036] This embodiment effectively reduces the opening and closing friction of the top cover 1 and the base 2 by precisely calculating the structural parameters and geometry of the annular protrusion 3 and the annular outer eight groove 7, improving the smoothness of opening and closing and achieving precise sealing. At the same time, through the synergistic effect with the locking assembly 5, multiple sealing protection can be achieved. Even without relying on the opening sticker of the wet wipe soft packaging bag, it can maintain a good sealing effect independently, ensuring the long-lasting moisturizing and hygienic safety of the wet wipes. This not only effectively improves the integrity and reliability of the product and avoids the situation where the sealing effect is reduced due to assembly errors or loose parts, but also significantly reduces production costs and improves production efficiency, making it especially suitable for large-scale mass production.

[0037] In this embodiment, as Figure 6 As shown, the annular protrusion 3 has inwardly inclined sides at both ends of 2.5 degrees, so that the top cover 1 and the base 2 gradually fit together and seal tightly when closed. The inclined sides enable the top cover 1 and the base 2 to gradually fit together and seal tightly when closed, while reducing the friction when opening, making it easier for the user to open.

[0038] In other embodiments, the annular protrusion 3 has inclined sides at both ends with an inward angle of 0 degrees, 0.5 degrees, 1 degree, 1.5 degrees, 2 degrees, 3 degrees, 3.5 degrees, 4 degrees, 4.5 degrees, or 5 degrees.

[0039] In this embodiment, the upper part of the annular protrusion 3 is provided with a rounded chamfer, and the radius of curvature of the rounded chamfer is 2.0mm. The rounded chamfer can transform the sharp edges of the base 2 into a smooth transition, reducing the risk of scratches and cuts to personnel; at the same time, the rounded chamfer can guide the top cover 1 to accurately fit with the base 2, facilitating installation; the rounded chamfer can make the force distribution more uniform, reduce stress concentration, and improve the fatigue resistance and reliability of the base 2; the rounded chamfer can make the appearance of the base 2 smoother and more streamlined, enhancing the overall aesthetics of the base 2.

[0040] In other embodiments, the radius of curvature of the rounded chamfer is 0.5 mm, 1 mm, or 1.5 mm.

[0041] In this embodiment, the groove wall of the annular outer eight groove 7 is an inclined surface. The groove wall of the annular outer eight groove 7 is inclined outward from the bottom of the groove, and the inclination angle of the groove wall of the annular outer eight groove 7 is smaller than the inclination angle of the inclined side. The inclined groove wall of the annular outer eight groove 7 is conducive to better fit and sealing between the top cover 1 and the base 2.

[0042] In this embodiment, as Figure 7 As shown, the locking assembly 5 includes an upper triangular protrusion 8 fixedly mounted on the base 2 and a lower triangular protrusion 10 elastically mounted on the top cover 1. Both the upper triangular protrusion 8 and the lower triangular protrusion 10 protrude horizontally and in opposite directions. When the top cover 1 and the base 2 are closed, the lower triangular protrusion 10 fits against the upper triangular protrusion 8 and extends below the upper triangular protrusion 8 to form a locked state between the base 2 and the top cover 1.

[0043] The front end of the top cover 1 is equipped with an easy-open part 9, which is located above the lower triangular protrusion 10. When the user needs to open the wet wipe soft packaging bag, he can directly use his hand to pry open the easy-open part 9 to separate the upper triangular protrusion 8 and the lower triangular protrusion 10, thereby opening the water-locking sealing cover.

[0044] In this embodiment, the top cover 1 and the base 2 are integrally injection molded structures. This integral injection molding process makes the product seamless, resulting in better sealing, higher structural strength, and improved user experience and safety.

[0045] In other embodiments, the top cover 1 and the base 2 are separate, and are only in a closed state when sealed.

[0046] The reason wet wipes remain soft, moist, and effective at cleaning is because they contain a certain amount of water and moisturizing ingredients. The water-locking lid prevents moisture from evaporating from the wipes inside the box, avoiding them drying out and hardening, which would affect their effectiveness.

[0047] Furthermore, wet wipes in soft packaging bags often come into contact with various items and skin, making them prone to bacterial contamination. Using a water-locking, airtight cap to seal the wet wipes in soft packaging bags can reduce the chance of external bacteria entering the box, providing a relatively sterile environment for the wet wipes, extending their shelf life, and ensuring their safety in use.

[0048] The water-locking sealing cap prevents dust, hair, and other impurities from entering the wet wipes' soft packaging, avoiding contamination and ensuring that each wipe is clean and hygienic for safe use.

[0049] Some ingredients added to wet wipes, such as preservatives, fragrances, and skin care agents, may oxidize or undergo other chemical reactions when exposed to air, affecting their performance and effectiveness. A water-locking, airtight cap helps reduce the contact of these ingredients with air, maintaining their stability and allowing the wet wipes to better perform their cleaning, disinfecting, and skin care functions.

[0050] When in use, the base 2 of the water-locking sealing cap needs to be fixedly assembled onto the wet wipe soft packaging bag. The opening sticker of the wet wipe soft packaging bag should be located in the sealed space. In this way, when the top cover 1 and the base 2 are closed, the water-locking sealing cap will seal the position of the opening sticker.

Claims

1. A water-locking sealing cap, comprising a top cover and a base, characterized in that, The base is provided with a first fastening part, and the top cover is provided with a second fastening part. The second fastening part corresponds to the first fastening part so that when the top cover is closed on the base, the first fastening part and the second fastening part are correspondingly fastened and sealed. The first fastening part is an annular protrusion with a trapezoidal cross-section structure that is narrow at the top and wide at the bottom. The second fastening part has an annular outer eight groove that is inserted and matched with the annular protrusion. The top cover and the front end of the base are equipped with a locking assembly so that the top cover and the base are locked when closed.

2. The water-locking sealing cap according to claim 1, characterized in that, The annular protrusion has inwardly inclined sides at both ends of 2-3 degrees so that the top cover and the base gradually fit together when closed.

3. A water-locking sealing cap according to claim 2, characterized in that, The annular protrusion has two sides that slope inward at 2.5 degrees.

4. A water-locking sealing cap according to claim 3, characterized in that, The upper part of the annular protrusion is provided with a rounded chamfer.

5. A water-locking sealing cap according to claim 4, characterized in that, The radius of curvature of the chamfered arc is 0.5mm-2.0mm.

6. A water-locking sealing cap according to any one of claims 2-5, characterized in that, The top cover is provided with a protrusion, and the annular outer eight grooves are arranged on the protrusion.

7. A water-locking sealing cap according to claim 6, characterized in that, The groove wall of the annular outer eight groove is an inclined surface. The groove wall of the annular outer eight groove is inclined outward from the bottom of the groove. The inclination angle of the groove wall of the annular outer eight groove is smaller than the inclination angle of the inclined side surface.

8. A water-locking sealing cap according to claim 7, characterized in that, The locking assembly includes an upper triangular protrusion fixedly mounted on the base and a lower triangular protrusion elastically mounted on the top cover. Both the upper and lower triangular protrusions protrude horizontally and in opposite directions. When the top cover and the base are closed, the lower triangular protrusion fits against the upper triangular protrusion and extends below the upper triangular protrusion to form a locking state between the base and the top cover.

9. A water-locking sealing cap according to claim 8, characterized in that, The top cover is hinged to the base, and the top cover and the base are integrally injection molded structures.

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