Sealing device of cosmetic inner container

Abstract

The utility model discloses a sealing device of a cosmetic inner container, and relates to the technical field of product packaging, the sealing device comprises a base plate and a sealing ring; the sealing ring is used for being buckled with the base plate, the sealing ring comprises an inner side wall and an outer side wall, a sealing groove is formed between the inner side wall and the outer side wall, the base plate comprises a sealing convex edge, and the sealing groove can be matched with the sealing convex edge; a sealing inner ring and a fixing inner ring are arranged on the outer side wall, the outer edge of the sealing inner ring and the outer edge of the fixing inner ring both protrude out of the outer side wall, the sealing inner ring can be matched with the side wall of the sealing protruding edge, and the fixing inner ring can be clamped with a groove in the side wall. In this way, the sealing inner ring on the sealing ring is matched with the side wall of the sealing convex edge of the base plate, the leakage risk of cosmetics can be effectively reduced, the sealing performance is improved, the fixing inner ring can be clamped with the groove in the side wall of the base plate, it is guaranteed that the sealing ring is not prone to loosening after being installed, and the stability of the whole structure is improved.

Description

Technical Field

[0001] This application relates to the field of product packaging technology, and in particular to a sealing device for a cosmetic inner liner. Background Technology

[0002] In the product packaging industry, sealing devices for cosmetic inner containers are used to hold cosmetics. However, existing sealing devices have several structural design flaws, resulting in poor sealing performance and stability. Some sealing devices use a simple mating method between the seal and the base, often relying on a single contact surface or compression to achieve a seal. This makes them prone to gaps when subjected to external pressure changes, vibrations, or temperature fluctuations, leading to seal failure. Other sealing devices have small contact areas for the seal, and the sealing ring is easily deformed by external impacts or material aging, causing a rapid decline in sealing performance. The sealing effect depends heavily on assembly precision; even slight deviations can lead to cosmetic leakage. Summary of the Invention

[0003] The purpose of this application is to address at least one of the aforementioned existing technical problems by providing a sealing device for a cosmetic inner liner. By providing a sealing inner ring and a fixing inner ring on the outer wall of the sealing ring, the sealing ring can engage with the chassis, thereby improving the sealing effect of the sealing device.

[0004] This application provides a sealing device for a cosmetic inner liner, the sealing device comprising a base and a sealing ring;

[0005] The sealing ring is used to engage with the chassis. The sealing ring includes an inner sidewall and an outer sidewall, and a sealing groove is formed between the inner sidewall and the outer sidewall. The chassis includes a sealing flange, and the sealing groove can be adapted to the sealing flange.

[0006] A sealing inner ring and a fixing inner ring are provided on the outer side wall. The outer edges of the sealing inner ring and the fixing inner ring both protrude from the outer side wall. The sealing inner ring can cooperate with the side wall of the sealing protrusion, and the fixing inner ring can engage with the groove on the side wall.

[0007] In a possible implementation, the fixed inner ring is provided with a fixing portion and at least one notch, the notch being recessed relative to the fixing portion to form a ventilation structure.

[0008] In a possible implementation, the plane containing the notch coincides with the plane containing the outer sidewall.

[0009] In a possible implementation, the fixed inner ring includes a first guide portion, a second guide portion, a third guide portion, and a fourth guide portion;

[0010] The first flow guide, the second flow guide, the third flow guide, and the fourth flow guide are evenly distributed along the fixed inner ring.

[0011] In a possible implementation, the width of the sealing groove is 0.7mm-1.8mm.

[0012] In one possible implementation, the inner sidewall is in clearance fit with the sealing flange.

[0013] In a possible implementation, the sealing ring is a one-piece molded structure.

[0014] In a possible implementation, the sealing ring further includes a plurality of protrusions, which are evenly distributed on the bottom wall of the sealing ring.

[0015] In a possible implementation, an aluminum foil layer is provided on the outer wall of the sealing ring.

[0016] The sealing device for a cosmetic inner liner provided in this application has the following beneficial effects:

[0017] This application provides a sealing device for a cosmetic inner liner. The sealing device includes a base and a sealing ring. The sealing ring is used to engage with the base and includes an inner sidewall and an outer sidewall, with a sealing groove formed between the inner and outer sidewalls. The base includes a sealing flange, and the sealing groove can be adapted to the sealing flange. A sealing inner ring and a fixing inner ring are provided on the outer sidewall. The outer edges of both the sealing inner ring and the fixing inner ring protrude from the outer sidewall. The sealing inner ring can cooperate with the sidewall of the sealing flange, and the fixing inner ring can engage with the groove on the sidewall. Thus, the cooperation between the sealing inner ring on the sealing ring and the sidewall of the sealing flange of the base can effectively reduce the risk of cosmetic leakage and improve sealing performance. The engagement of the fixing inner ring with the groove on the sidewall of the base ensures that the sealing ring will not easily loosen after installation, improving the stability of the overall structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a sealing ring provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of a sealing ring provided in an embodiment of this application;

[0021] Figure 3A cross-sectional view of a sealing ring provided in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the chassis structure provided in an embodiment of this application;

[0023] Figure 5 A cross-sectional view of a chassis provided in an embodiment of this application;

[0024] Figure 6 An exploded view of a sealing device provided in an embodiment of this application;

[0025] Figure 7 A cross-sectional view of a sealing device provided in an embodiment of this application;

[0026] Figure 8 This is a partial enlarged view of point A provided in an embodiment of this application;

[0027] Figure 9 A cross-sectional view of the sealing device from another perspective, provided for an embodiment of this application;

[0028] Figure 10 An exploded view of a cosmetic packaging box provided in an embodiment of this application;

[0029] Figure 11 A top view of a cosmetic packaging box provided in an embodiment of this application;

[0030] Figure 12 A first-view cross-sectional view of a cosmetic packaging box provided for an embodiment of this application;

[0031] Figure 13 A cross-sectional view of a cosmetic packaging box from a second perspective, provided for an embodiment of this application.

[0032] The following is supplementary explanation of the attached figures:

[0033] 1. Chassis; 11. Sealing flange; 2. Sealing ring; 21. Inner wall; 22. Outer wall; 23. Sealing inner ring; 24. Fixing inner ring; 241. Fixing part; 242. Notch; 25. Protrusion; 26. Aluminum foil layer; 3. Top cover. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0035] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0036] The following description, in conjunction with the accompanying drawings, introduces a sealing device for a cosmetic inner liner provided by an embodiment of this application. This sealing device for a cosmetic inner liner is particularly suitable for sealing cosmetics.

[0037] Please see Figures 1-9 This application provides a sealing device for a cosmetic inner liner. The sealing device includes a base 1 and a sealing ring 2. The sealing ring 2 is used to engage with the base 1. The sealing ring 2 includes an inner sidewall 21 and an outer sidewall 22, with a sealing groove formed between the inner sidewall 21 and the outer sidewall 22. The base 1 includes a sealing flange 11, and the sealing groove can be adapted to the sealing flange 11. A sealing inner ring 23 and a fixing inner ring 24 are provided on the outer sidewall 22. The outer edges of both the sealing inner ring 23 and the fixing inner ring 24 protrude from the outer sidewall 22. The sealing inner ring 23 can cooperate with the sidewall of the sealing flange 11, and the fixing inner ring 24 can engage with the groove on the sidewall. In this way, the cooperation between the sealing inner ring 23 on the sealing ring 2 and the sidewall of the sealing flange 11 of the base 1 can effectively reduce the risk of cosmetic leakage and improve the sealing performance. The engagement of the fixing inner ring 24 with the groove on the sidewall of the base 1 ensures that the sealing ring 2 will not easily loosen after installation, thus improving the stability of the overall structure.

[0038] Understandably, the chassis 1 is used to load and protect cosmetics, such as foundation, lipstick, and eyeshadow. The sealing device of the cosmetic inner liner is connected to the top cover 3 to form a cosmetic packaging box. The chassis 1 also serves as a support base for the sealing ring 2, which provides a sealing function. The sealing ring 2 achieves a sealing effect by cooperating with the sealing flange 11 of the chassis 1, preventing leakage or contamination of the cosmetic contents. The sealing flange 11 further enhances the sealing performance, forming a double sealing structure. The fixed inner ring 24 is used to improve the structural stability of the sealing ring 2, ensuring that the sealing ring 2 will not loosen or shift during the fastening process, thereby improving the overall strength and durability of the sealing device.

[0039] Specifically, the sidewall of the sealing flange 11 includes a first wall and a second wall. The first wall can cooperate with the outer sidewall 22 of the sealing ring 2, and the second wall can cooperate with the inner sidewall 21 of the sealing ring 2. A first groove is provided on the first wall, which is recessed towards the second wall. The first groove is an annular structure, and the fixing inner ring 24 can engage with the first groove. The sealing inner ring 23 cooperates with the sidewall of the sealing flange near the top end of the sealing flange and with the sidewall of the sealing flange near the bottom end of the sealing flange. During assembly, the sealing ring 2 is aligned with the chassis 1, so that the sealing groove is aligned with the sealing flange 11. The sealing ring 2 is pressed, so that the sealing inner ring 23 fits against the sidewall of the sealing flange 11, while the fixing inner ring 24 engages with the groove of the sealing flange 11.

[0040] In one embodiment, the sealing inner ring 23 is arranged parallel to the fixed inner ring 24.

[0041] Specifically, the sealing ring 2 is made of PET plastic, and the chassis 1 is also made of PET plastic.

[0042] like Figures 10-13 As shown, the base 1 of the sealing device of the cosmetic inner liner can be hinged to the top cover 3 to form a cosmetic packaging box. The sealing device is used to contain cosmetics, and the top cover 3 and the sealing device are closed to form a receiving cavity to contain cosmetics. During the process of taking out cosmetics, the sealing ring 2 and the base 1 will not move relative to each other.

[0043] Specifically, the fixed inner ring 24 is provided with a fixing part 241 and at least one notch 242, the notch 242 being recessed relative to the fixing part 241 to form a ventilation structure. In this way, the ventilation structure formed by the notch 242 facilitates air circulation, reduces the vacuum effect caused by the sealing ring 2 being too tight, improves the smoothness of access, and the ventilation structure can also balance the internal and external pressure of the chassis 1, preventing the inner disc from expanding or contracting due to temperature changes or compression.

[0044] Specifically, notches 242 are provided between the fixing portions 241. For example, when the inner fixing ring 24 has two notches 242, the inner fixing ring 24 includes two fixing portions 241 for engaging with the chassis 1. The number of fixing portions 241 is the same as the number of notches 242.

[0045] In one embodiment, the plane containing the notch 242 coincides with the plane containing the outer wall 22. Since the notch 242 and the outer wall 22 are located on the same plane, air can flow smoothly along the direction of the notch 242, reducing airflow obstruction, improving ventilation efficiency, and helping to balance the internal and external air pressure of the sealing device, thus avoiding sealing failure or deformation caused by pressure difference.

[0046] In one possible implementation, the notch 242 is a U-shaped notch 242; in another possible implementation, the notch 242 is a trapezoidal notch 242.

[0047] In one embodiment, the edges of the notch 242 include a chamfered structure.

[0048] Furthermore, the fixed inner ring 24 includes a first guide section, a second guide section, a third guide section, and a fourth guide section; the first guide section, the second guide section, the third guide section, and the fourth guide section are evenly distributed along the fixed inner ring 24. In this way, the evenly distributed notches 242 improve the ventilation uniformity of the fixed inner ring 24, which helps to optimize internal airflow exchange and pressure balance, while ensuring the overall structural stability of the sealing ring 2 and improving the reliability and applicability of the sealing device.

[0049] Specifically, the fixed inner ring 24 includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected in sequence; the first guide portion is located on the central axis of the first sidewall, the second guide portion is located on the central axis of the second sidewall, the third guide portion is located on the central axis of the third sidewall, and the fourth guide portion is located on the central axis of the fourth sidewall.

[0050] Specifically, the dimensions of the first guide section, the second guide section, the third guide section, and the fourth guide section are the same.

[0051] Specifically, the width of the sealing groove is 0.7mm-1.8mm. In this way, the sealing groove effectively fits the sealing ring 2, ensuring the sealing performance of the sealing ring 2 and improving the ease of assembly of the sealing ring 2, thereby enhancing the reliability of the sealing device.

[0052] In one implementation, the width of the sealing groove gradually increases along the direction close to the sealing ring 2.

[0053] Preferably, the width of the sealing groove is 0.8mm-1.6mm.

[0054] In one embodiment, such as Figure 8As shown, the fixing part 241 is interference-fitted with the side wall of the sealing flange 11. Because the fixing part 241 and the side wall of the sealing flange 11 form an interference fit, it is not easy to loosen or displace under the action of external force, thereby ensuring the long-term stability of the sealing device and reducing the sealing failure caused by vibration, impact or long-term use.

[0055] Specifically, the side wall portion of the sealing flange 11 that mates with the fixing part 241 has a straight wall structure.

[0056] Specifically, the interference fit between the fixing part 241 and the side wall of the sealing flange 11 is 0.1mm-0.2mm.

[0057] Specifically, the inner sidewall 21 and the sealing flange 11 are fitted with a clearance. In this way, the inner sidewall 21 and the sealing flange 11 have a tolerance range during installation, which reduces the resistance during the assembly of the sealing ring 2, improves the assembly efficiency of the sealing device, and avoids sealing failure caused by excessive compression.

[0058] Specifically, when the sealing ring 2 and the sealing flange 11 are engaged, the gap between the inner wall 21 and the sealing flange 11 is 0.1mm-0.4mm.

[0059] Preferably, the gap between the inner sidewall 21 and the sealing flange 11 is 0.2 mm.

[0060] Specifically, the sealing ring 2 is a one-piece molded structure. This avoids the risk of leakage at the joint of the sealing ring 2 and enhances its sealing performance and durability.

[0061] Specifically, the sealing ring 2, the fixed inner ring 24, and the sealing inner ring 23 are integrally formed structures.

[0062] In one embodiment, the chassis 1 is also a one-piece molded structure.

[0063] In one embodiment, the sealing ring 2 further includes a plurality of protrusions 25, which are evenly distributed on the bottom wall of the sealing ring 2. The plurality of protrusions 25 are used to improve the welding effect between the mesh and the sealing ring 2 during ultrasonic welding, thereby enhancing the connection strength, optimizing the welding uniformity, and improving the overall sealing performance.

[0064] Specifically, multiple protrusions 25 are of the same size and can form an ultrasonic ring line. A mesh is provided on the chassis 1. Users can take cosmetics through the mesh. During the assembly of the mesh, the evenly distributed ultrasonic lines can melt rapidly under the action of ultrasound and form a firm weld with the mesh, improving welding efficiency.

[0065] Specifically, the protrusion 25 is made of plastic.

[0066] In one embodiment, an aluminum foil layer 26 is provided on the outer wall of the sealing ring 2. In this way, the aluminum foil layer 26 can effectively prevent the outer wall of the sealing ring 2 from directly contacting the external environment, thereby reducing corrosion, oxidation or other chemical reactions and extending the service life of the sealing ring 2.

[0067] Specifically, the aluminum foil layer 26 is welded to the outer wall of the sealing ring 2.

[0068] Specifically, the aluminum foil layer 26 has a smooth surface and a metallic luster, which improves the appearance quality of the sealing ring 2 and increases the cleanliness of the sealing device.

[0069] In one embodiment, the aluminum foil layer 26 is provided with a visual identifier, exemplarily a product logo. The aluminum foil layer 26 is a ring-shaped aluminum foil layer.

[0070] The following describes specific embodiments of this application based on the above technical solution.

[0071] Example 1

[0072] Please see Figures 1 to 9 Example 1 provides a sealing device for a cosmetic inner liner. The sealing device includes a base 1 and a sealing ring 2. The sealing ring 2 is used to engage with the base 1. The sealing ring 2 includes an inner sidewall 21 and an outer sidewall 22. A sealing groove is formed between the inner sidewall 21 and the outer sidewall 22. The base 1 includes a sealing flange 11. The sealing groove can be adapted to the sealing flange 11. A sealing inner ring 23 and a fixing inner ring 24 are provided on the outer sidewall 22. The outer edges of the sealing inner ring 23 and the fixing inner ring 24 both protrude from the outer sidewall 22. The sealing inner ring 23 can cooperate with the sidewall of the sealing flange 11, and the fixing inner ring 24 can engage with the groove on the sidewall.

[0073] The sealing ring 2 is made of PET plastic, and the chassis 1 is also made of PET plastic. The fixed inner ring 24 has a fixing part 241 and multiple notches 242, with the notches 242 recessed relative to the fixing part 241 to form a ventilation structure. The plane of the notches 242 coincides with the plane of the outer wall 22. The fixed inner ring 24 includes a first guide part, a second guide part, a third guide part, and a fourth guide part; these four guide parts are evenly distributed along the fixed inner ring 24. The width of the sealing groove is 0.8mm-1.6mm. The fixing part 241 is interference-fitted with the sidewall of the sealing flange 11. The inner sidewall 21 is clearance-fitted with the sealing flange 11. The sealing ring 2, the fixed inner ring 24, and the sealing inner ring 23 are integrally molded structures.

[0074] The sealing ring 2 also includes multiple protrusions 25, which are evenly distributed on the bottom wall of the sealing ring 2. The protrusions 25 are of uniform size and can form an ultrasonic annular line. The protrusions 25 are made of plastic. An aluminum foil layer 26 is provided on the outer wall of the sealing ring 2. The aluminum foil layer 26 is welded to the outer wall of the sealing ring 2.

[0075] Example 2

[0076] like Figures 10-13 As shown, Embodiment 2 provides a cosmetic packaging box, including the sealing device of the cosmetic inner liner of the above embodiment. In the sealing device of the cosmetic inner liner, the base plate 1 can be hinged to the top cover 3 to form a cosmetic packaging box. The sealing device is used to contain cosmetics. The top cover 3 and the sealing device are closed to form a receiving cavity to contain cosmetics. During the process of taking out cosmetics, the sealing ring 2 and the base plate 1 will not move relative to each other.

[0077] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sealing device for a cosmetic inner liner, characterized in that, The sealing device includes a chassis (1) and a sealing ring (2); The sealing ring (2) is used to engage with the chassis (1). The sealing ring (2) includes an inner sidewall (21) and an outer sidewall (22). A sealing groove is formed between the inner sidewall (21) and the outer sidewall (22). The chassis (1) includes a sealing flange (11). The sealing groove can be adapted to the sealing flange (11). A sealing inner ring (23) and a fixing inner ring (24) are provided on the outer side wall (22). The outer edges of the sealing inner ring (23) and the fixing inner ring (24) both protrude from the outer side wall (22). The sealing inner ring (23) can cooperate with the side wall of the sealing flange (11), and the fixing inner ring (24) can engage with the groove on the side wall.

2. The sealing device according to claim 1, characterized in that, The fixed inner ring (24) is provided with a fixing part (241) and at least one notch (242), the notch (242) being recessed relative to the fixing part (241) to form a ventilation structure.

3. The sealing device according to claim 2, characterized in that, The plane where the notch (242) is located coincides with the plane where the outer wall (22) is located.

4. The sealing device according to claim 2, characterized in that, The fixed inner ring (24) includes a first guide section, a second guide section, a third guide section and a fourth guide section; The first guide section, the second guide section, the third guide section and the fourth guide section are evenly distributed along the fixed inner ring (24).

5. The sealing device according to any one of claims 1-4, characterized in that, The width of the sealing groove is 0.7mm-1.8mm.

6. The sealing device according to any one of claims 2-4, characterized in that, The fixing part (241) is interference-fitted with the side wall of the sealing flange (11).

7. The sealing device according to any one of claims 1-4, characterized in that, The inner sidewall (21) is clearance-fitted with the sealing flange (11).

8. The sealing device according to any one of claims 1-4, characterized in that, The sealing ring (2) is an integrally formed structure.

9. The sealing device according to any one of claims 1-4, characterized in that, The sealing ring (2) also includes a plurality of protrusions (25), which are evenly distributed on the bottom wall of the sealing ring (2).

10. The sealing device according to any one of claims 1-4, characterized in that, An aluminum foil layer (26) is provided on the outer wall of the sealing ring (2).

Images