Inner container assembly and cosmetic container comprising same

Abstract

An inner container assembly and a cosmetic container comprising same. The inner container assembly comprises an inner cover (110), a middle ring (120) and a material carrying tray (130), wherein the inner cover (110) covers the middle ring (120); the material carrying tray (130) is fixedly mounted within the middle ring (120); the inner cover (110) and the middle ring (120) are in interference fit by means of a first sealing ring (140), such that the first sealing ring (140) can seal the middle ring (120); the material carrying tray (130) and the middle ring (120) are in interference fit by means of a second sealing ring (150), such that the second sealing ring can seal the material carrying tray (130); and the inner cover (110), the middle ring (120) and the material carrying tray (130) are made of rigid plastics, and the first sealing ring (140) and the second sealing ring (150) are made of elastic materials, with the hardness of the rigid plastics being greater than that of the elastic materials. The inner container assembly is made of the rigid plastics, and is sealed by using the first sealing ring (140) and the second sealing ring (150), and thus the inner container assembly has a high hardness and a high sealing performance.

Description

Inner liner component and cosmetic container containing the same Technical Field

[0001] The present application relates to cosmetic packaging technology, and in particular to an inner liner component and a device comprising the inner liner component. Background Art

[0002] Existing cosmetic containers use an inner liner assembly to store cosmetic ingredients. The liner assembly includes an inner lid, a center ring, and a powder compact. A sealing ring is installed on the inner lid to ensure a tight seal. Current liner assemblies are mostly made of polyolefin materials, which cannot meet consumers' demand for higher strength. Furthermore, using high-hardness materials cannot meet the required sealing requirements. Summary of the Invention

[0003] In order to overcome the above-mentioned defects, the present application provides an inner liner assembly, which is made of hard plastic and uses a first sealing ring and a second sealing ring to seal the inner liner assembly, thereby obtaining an inner liner assembly with high hardness and high sealing performance.

[0004] The technical solution adopted by this application to solve its technical problems is:

[0005] A liner assembly comprises an inner cover 1, a middle ring and a loading tray, the inner cover is covered on the middle ring, the loading tray is fixedly installed in the middle ring, the inner cover and the middle ring are interference fit through a first sealing ring so that the first sealing ring can seal the middle ring, the loading tray and the middle ring are interference fit through a second sealing ring so that the second sealing ring can seal the loading tray, the inner cover, the middle ring and the loading tray are made of hard plastic, the first sealing ring and the second sealing ring are made of elastic material, and the hardness of the hard plastic is greater than the hardness of the elastic material.

[0006] Optionally, the hard plastic includes PET material, and the elastic material includes TPE material.

[0007] Optionally, the second sealing ring is fixedly provided on at least one of the inner side wall of the middle ring and the outer side wall of the loading tray.

[0008] Optionally, the middle ring and the second sealing ring 1 are integrally formed by two-color injection molding; and / or the loading tray and the second sealing ring are integrally formed by two-color injection molding.

[0009] Optionally, a circle of the second sealing ring is fixedly provided on the outer side wall of the loading tray, and the second sealing ring is located at the upper end of the loading tray.

[0010] Optionally, the inner cover is rotatably mounted on the middle ring through a first hinge assembly, and a first cylinder and a second cylinder are fixed on the middle ring, the second cylinder is located on the outside of the first cylinder, the first sealing ring is located between the first cylinder and the inner cover, the inner cover and the second cylinder are clamped and fixed, and the middle ring and the loading tray are clamped and fixed.

[0011] Optionally, the first sealing ring is fixedly provided on at least one of the outer wall of the inner cover and the inner wall of the middle ring.

[0012] Optionally, the inner cover and the first sealing ring are integrally formed by two-color injection molding; and / or the middle ring and the first sealing ring are integrally formed by two-color injection molding.

[0013] Optionally, a circle of the first sealing ring is fixedly provided on the outer side wall of the inner cover, and the first sealing ring is located on the lower end surface of the inner cover.

[0014] Optionally, when the inner cover is covered on the middle ring, an exhaust channel is formed between the first sealing ring and the middle ring, and the exhaust channel is used for the circulation of gas inside and outside the middle ring. There is an airtight fitting area between the first sealing ring and the middle ring, and the exhaust channel is located on the side of the airtight fitting area away from the loading tray.

[0015] Optionally, the outer wall of the first sealing ring extends radially outward to form an annular protrusion, the inner wall of the middle ring is recessed inward to form an annular groove, the annular protrusion is interference fit in the annular groove, and the annular protrusion and the annular groove are located in the airtight fitting area.

[0016] Optionally, a avoidance groove is provided on the lower end surface of the first sealing ring, wherein the upper end of the avoidance groove is a closed end and the lower end is an open end.

[0017] The present application also provides a cosmetic container, comprising: an inner liner assembly; a bottom assembly, the inner liner assembly being detachably connected to the bottom assembly; and an outer cover assembly, the outer cover assembly being rotatably mounted on the bottom assembly via a second hinge assembly, the outer cover assembly being capable of covering the inner cover, the outer cover assembly and the bottom assembly being fixed together by a suction assembly, the outer cover assembly comprising an outer cover and a top sheet fixedly attached to the outer cover, the top sheet being an integrally formed plastic part, and a logo being provided on the top sheet.

[0018] The beneficial effects of the present application are as follows: the liner assembly in the present application includes an inner cover, a middle ring and a loading tray, the inner cover is covered on the upper end of the middle ring, and the loading tray is fixedly installed on the lower end of the middle ring, and the liner assembly is made of hard plastic, which meets the consumer's demand for a high-hardness liner assembly; a first sealing ring made of elastic material is provided between the inner cover and the middle ring, which achieves the purpose of sealing the loading tray when the inner cover is covered on the middle ring, thereby avoiding the cosmetic material storage container from being contaminated due to long-term contact with the external air; a second sealing ring made of elastic material is provided between the middle ring and the loading tray, which prevents air from entering the loading tray from the gap between the middle ring and the loading tray, thereby further improving the sealing of the liner assembly; therefore, the present liner assembly has high hardness and high sealing performance, which meets the consumer's demand for high-quality cosmetic containers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of the structure of a cosmetic container in this application;

[0020] Figure 2 is an enlarged view of point A in Figure 1;

[0021] FIG3 is a second structural diagram of a cosmetic container in this application;

[0022] FIG4 is a top view of the cosmetic container in this application;

[0023] FIG5 is an exploded view of the cosmetic container in this application;

[0024] FIG6 is a schematic structural diagram of the inner cover in this application;

[0025] FIG7 is one of the structural diagrams of the middle circle in this application;

[0026] FIG8 is a second structural diagram of the middle circle in this application;

[0027] FIG9 is a cross-sectional view taken along line BB in FIG8 ;

[0028] FIG10 is a schematic structural diagram of the loading tray in this application;

[0029] In the figure: 100- liner assembly, 110- inner cover, 120- middle ring, 121- first cylinder, 122- second cylinder, 123- exhaust groove, 124- annular groove, 125- mesh, 130- loading tray, 140- first sealing ring, 141- annular protrusion, 142- avoidance groove, 150- second sealing ring,

[0030] 200-outer cover assembly, 210-outer cover, 220-top piece, 221-logo, 230-lens,

[0031] 300- bottom assembly, 310- insole, 320- outsole,

[0032] 400-first hinge assembly, 410-first hinge, 420-second hinge, 430-first hinge axis,

[0033] 500-second hinge assembly, 510-third hinge, 520-fourth hinge, 530-second hinge axis,

[0034] 600 - attraction component, 610 - first magnet, 620 - second magnet. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in this application are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the following drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] Embodiment: As shown in Figure 1-10, an inner liner assembly includes an inner cover 110, a middle ring 120 and a loading tray 130. The inner cover 110 covers the middle ring 120, and the loading tray 130 is fixedly installed in the middle ring 120. The inner cover 110 and the middle ring 120 are interference fit through a first sealing ring 140, so that the first sealing ring 140 can seal the middle ring 120, and the loading tray 130 and the middle ring 120 are interference fit through a second sealing ring 150, so that the second sealing ring 150 can seal the loading tray 130. The loading tray 130 is used to store cosmetic materials, which can be powdery, paste-like, or other cosmetics or skin care products. The inner cover 110, the middle ring 120 and the loading tray 130 are made of hard plastic, and the first sealing ring 140 and the second sealing ring 150 are made of elastic material. The hardness of the hard plastic is greater than that of the elastic material.

[0039] Elastic materials include thermoplastic elastomers and various special saturated rubbers that cannot be vulcanized with sulfur. Thermoplastic elastomers include thermoplastic polyurethane elastomer rubber TPU, thermoplastic polyester elastomer TPEE, styrene-butadiene-styrene block copolymer SBS, etc.

[0040] The inner liner assembly 100 in the present application includes an inner cover 110, a middle ring 120 and a loading tray 130. The inner cover 110 covers the upper end of the middle ring 120, and the loading tray 130 is fixedly installed at the lower end of the middle ring 120. The inner liner assembly 100 is made of hard plastic, which meets the consumer's demand for a high-hardness inner liner assembly 100; a first sealing ring 140 made of elastic material is provided between the inner cover 110 and the middle ring 120, which achieves the purpose of sealing the loading tray 130 when the inner cover 110 covers the middle ring 120, thereby avoiding the cosmetic material storage container from being contaminated due to long-term contact with external air; a second sealing ring 150 made of elastic material is provided between the middle ring 120 and the loading tray 130 to prevent air from entering the loading tray 130 from the gap between the middle ring 120 and the loading tray 130, thereby further improving the sealing performance of the inner liner assembly; therefore, the present inner liner assembly has high hardness and high sealing performance, which meets the consumer's demand for high-quality cosmetic containers.

[0041] Among them, the hard plastic includes PET material, and the elastic material includes TPE material. PET (PolyEthylene Terephthalate) is polyethylene terephthalate. PET is a plastic with excellent strength and rigidity, good transparency and can withstand high temperatures, and is suitable for making high-strength, transparent and high-temperature resistant containers. TPE material is a thermoplastic elastomer material. TPE has good elasticity and is used between the inner cover 110 and the middle ring 120 made of PET, or between the middle ring 120 and the loading tray 130, to achieve a good sealing effect. In this application, the liner assembly is made of PET material, so that the product has high strength, high hardness, and high transparency, thereby improving the quality and grade of the product. In order to solve the problem of poor sealing performance between the high-hardness liner, the middle ring and the loading tray, a first sealing ring is provided between the inner cover and the middle ring, and a second sealing ring is provided between the loading tray and the middle ring. The first sealing ring and the second sealing ring are made of TPE material with good elasticity, thereby obtaining a high-strength, high-hardness, high-transparency, and high-sealing liner assembly.

[0042] Optionally, a second sealing ring 150 is fixedly provided on at least one of the inner sidewall of the middle ring 120 and the outer sidewall of the loading tray 130. In a first possible embodiment, a circle of second sealing ring 150 is provided on the inner sidewall of the middle ring 120, and the second sealing ring 150 is airtightly attached to the outer sidewall of the loading tray 130.

[0043] In a second possible embodiment, a second sealing ring 150 is provided on the outer wall of the loading tray 130, and the second sealing ring 150 is airtightly attached to the inner wall of the middle ring 120. As shown in Figures 1 and 10, the second sealing ring 150 is located at the upper end of the loading tray 130 and extends to the opening of the loading tray 130. Optionally, as shown in Figure 3, a mesh 125 is welded to the middle ring 120, and the mesh 125 is located above the loading tray 130. The second sealing ring 150 is located below the mesh 125. When the loading tray 130 is installed on the middle ring 120, the second sealing ring 150 is interference fit with the inner wall of the middle ring 120. Optionally, the second sealing ring 150 is an annular structure with both ends open.

[0044] In a third possible implementation, the inner wall of the middle ring 120 and the outer wall of the loading tray 130 are both provided with a circle of second sealing ring 150 , and the two second sealing rings 150 fit together airtightly. The above three methods can all achieve the purpose of sealing the loading tray 130 .

[0045] Optionally, the center ring 120 and the second sealing ring 150 are integrally formed using two-color injection molding; and / or the loading tray 130 and the second sealing ring 150 are integrally formed using two-color injection molding. By integrally forming the center ring 120 and the second sealing ring 150, and the loading tray 130 and the second sealing ring 150 using two-color injection molding, the bonding strength between the second sealing ring 150 and the center ring 120, or between the second sealing ring 150 and the loading tray 130, is high, and the sealing effect is good.

[0046] As shown in Figures 3 and 5, the inner cover 110 is rotatably mounted on the middle ring 120 via a first hinge assembly 400. As shown in Figures 7-9, a first cylinder 121 and a second cylinder 122 are fixedly mounted on the middle ring 120, with the second cylinder 122 located outside the first cylinder 121. As shown in Figure 2, the first sealing ring 140 is located between the first cylinder 121 and the inner cover 110. The inner cover 110 and the second cylinder 122 are engaged and fixed, and the middle ring 120 and the loading tray 130 are engaged and fixed. As shown in Figures 3 and 5, the first hinge assembly 400 includes a first hinge 410, a second hinge 420, and a first hinge shaft 430. As shown in Figures 5 and 6, the first hinge 410 is fixedly mounted on the inner cover 110. As shown in Figures 5 and 7, the second hinge 420 is fixedly mounted on the middle ring 120. As shown in Figures 3 and 5, during assembly, after the first hinge 410 and the second hinge 420 are docked, the first hinge shaft 430 is inserted into the first hinge 410 and the second hinge 420 to rotatably connect the inner cover 110 to the center ring 120. The inner cover 110 and the center ring 120 are fixed together by means of a snap-in and a slot, or a snap-in and a slot, and the loading tray 130 and the center ring 120 are fixed together by means of a snap-in and a slot, or a snap-in and a slot, and so on.

[0047] Optionally, a first sealing ring 140 is fixedly provided on at least one of the outer wall of the inner cover 110 and the inner wall of the middle ring 120. In a first possible embodiment, a circle of the first sealing ring 140 is provided on the inner wall of the middle ring 120, and the first sealing ring 140 is airtightly attached to the outer wall of the inner cover 110.

[0048] In a second possible embodiment, a first sealing ring 140 is provided on the outer sidewall of the inner cover 110, which is in airtight contact with the inner sidewall of the middle ring 120. As shown in Figure 1, the first sealing ring 140 is located on the lower end surface of the inner cover 110. Optionally, the first sealing ring 140 is an annular structure with both upper and lower ends open. The first sealing ring 140 is provided on the lower end surface of the inner cover 110, and the contact surface of the inner cover 110 with the first sealing ring 140 is a curved surface, thereby improving the sealing performance between the inner cover 110 and the middle ring 120.

[0049] In a third possible implementation, the inner wall of the middle ring 120 and the outer wall of the inner cover 110 are both provided with a first sealing ring 140 , and the two first sealing rings 140 fit together airtightly. The above three methods can all achieve the purpose of sealing the loading tray 130 .

[0050] Optionally, the inner cover 110 and the first sealing ring 140 are integrally formed using two-color injection molding; and / or the middle ring 120 and the first sealing ring 140 are integrally formed using two-color injection molding. By integrally forming the middle ring 120 and the first sealing ring 140, or the inner cover 110 and the first sealing ring 140, using two-color injection molding, the bonding strength between the first sealing ring 140 and the middle ring 120, or between the first sealing ring 140 and the inner cover 110, is high, and the sealing effect is good.

[0051] As shown in Figures 1 and 2, when the inner cover 110 is attached to the middle ring 120, an exhaust channel is formed between the first sealing ring 140 and the middle ring 120. The exhaust channel is used to circulate gas between the inside and outside of the middle ring 120. An airtight contact area is formed between the first sealing ring 140 and the middle ring 120, and the exhaust channel is located on the side of the airtight contact area away from the loading tray 130. The loading tray 130 is located below the airtight contact area, and the exhaust channel is located above the airtight contact area, ensuring that the exhaust channel does not affect the airtightness between the first sealing ring 140 and the middle ring 120. The exhaust channel includes an exhaust groove 123. In one possible embodiment, the exhaust groove 123 is circumferentially defined on the outer wall of the first sealing ring 140. In another possible embodiment, as shown in Figures 2, 7, and 9, the exhaust groove 123 is circumferentially defined on the inner wall of the middle ring 120, that is, the exhaust groove 123 is defined in the first cylindrical body 121. During the closing process of the inner cover 110, the air between the first sealing ring 140 and the middle ring 120 can be discharged in time through the exhaust channel; during the opening process of the inner cover 110, external air enters the area between the middle ring 120 and the first sealing ring 140 through the exhaust channel, thereby eliminating the internal and external pressure difference in the area between the first sealing ring 140 and the middle ring 120, facilitating the smooth opening and closing of the inner cover 110.

[0052] As shown in Figures 2 and 9, the outer wall of the first sealing ring 140 extends radially outward to form an annular protrusion 141, and the inner wall of the middle ring 120 is recessed inward to form an annular groove 124. The annular protrusion 141 fits tightly within the annular groove 124, and the annular protrusion 141 and the annular groove 124 are located in an airtight fitting area. The interplay of the annular protrusion 141 and the annular groove 124 further enhances the sealing effect of the first sealing ring 140.

[0053] As shown in FIG2 , a relief groove 142 is defined on the lower end surface of the first sealing ring 140 . The relief groove 142 has a closed upper end and an open lower end. The relief groove 142 is a blind groove with a closed upper end and an open lower end. Due to the presence of the relief groove 142 , when the first sealing ring 140 is sealed against the middle ring 120 , the first sealing ring 140 can deform toward the relief groove 142 , thereby facilitating the closing of the inner cover 110 against the middle ring 120 and reducing the friction between the first sealing ring 140 and the middle ring 120 . When the inner cover 110 and the middle ring 120 are combined, the first sealing ring 140 returns to its normal state to seal the middle ring 120 .

[0054] As shown in Figures 1-4, a cosmetic container includes: an inner liner assembly 100; a bottom assembly 300, the inner liner assembly 100 and the bottom assembly 300 are detachably connected; and an outer cover assembly 200, the outer cover assembly 200 is rotatably mounted on the bottom assembly 300 via a second hinge assembly 500, the outer cover assembly 200 can cover the inner cover 110, and the outer cover assembly 200 and the bottom assembly 300 are fixed by suction via a suction assembly 600, the outer cover assembly 200 includes an outer cover 210 and a top sheet 220 fixedly attached to the outer cover 210, the top sheet 220 is an integrally molded plastic part, and a logo 221 is provided on the top sheet 220.

[0055] The top sheet 220 has a leather-like appearance and feel. Attached to the outer surface of the cosmetic container, it not only protects the container but also gives the user a leather-like visual experience, enhancing the product's quality. The top sheet 220 is made of plastic, which is more wear-resistant and elastic than leather. Compared to traditional stamped silicone substrates combined with imitation leather surfaces, the top sheet 220 has high hardness, strong toughness, and is more durable. Optionally, the logo 221 is a letter, number, Chinese character, or other special symbol, and the logo 221 is integrally injection-molded with the top sheet 220. Optionally, the top sheet 220 includes a patch substrate made of TPU, PP, PVC, or PET. Among them, TPU (ThermoPlastic polyUrethane) is thermoplastic polyurethane elastomer rubber, PET (PolyEthylene Terephthalate) is polyethylene terephthalate, PP (PolyPropylene) is polypropylene, and PVC (PolyVinyl Chloride) is polyvinyl chloride.

[0056] As shown in Figures 1-5, the bottom assembly 300 includes an outer sole 320 and an inner sole 310 fixedly installed in the outer sole 320, and the middle ring 120 is detachably installed inside the inner sole 310; the inner sole 310 and the outer sole 320 are fixed by means of card points and card slots, card points and card points, etc.; the middle ring 120 and the inner sole 310 are fixed by means of card points and card slots, card points and card points, etc.

[0057] As shown in Figures 1 and 5, the second hinge assembly 500 includes a third hinge 510, a fourth hinge 520, and a second hinge shaft 530. The third hinge 510 is fixedly mounted on the outer cover 210, and the fourth hinge 520 is fixedly mounted on the outer bottom 320. As shown in Figure 1, during assembly, after the third hinge 510 and the fourth hinge 520 are docked, the second hinge shaft 530 is inserted into the third hinge 510 and the fourth hinge 520 to rotatably connect the outer cover 210 to the outer bottom 320. Optionally, the inner side of the outer cover 210 is fixedly bonded to the lens 230, and the inner cover 110 is used to place a powder puff for dipping in cosmetic materials.

[0058] The inner cover 110, the center ring 120, and the loading tray 130 form the inner liner assembly 100. When the material in the loading tray 130 is used up, the inner liner assembly 100 can be removed and replaced with a new inner liner assembly 100 for continued use. Therefore, other components of the cosmetic container can be reused, which is energy-saving, environmentally friendly, and cost-effective. During assembly, the inner liner assembly 100 is first installed, and then the loading tray 130 is filled with material. After filling, the inner liner assembly 100 is then installed in the base assembly 300. If a problem occurs due to misoperation during the filling process, the loading tray 130 can be removed and replaced with a new one.

[0059] The lower surface of the loading tray 130 can be partially exposed to the outside or the lower surface of the loading tray 130 can be completely exposed to the outside. When the lower surface of the loading tray 130 is partially exposed to the outside, the loading tray 130 can be lifted upward from the lower end of the container to separate the entire liner assembly 100 from the top and the bottom assembly 300; when the lower surface of the loading tray 130 is completely exposed to the outside, the liner assembly 100 can be pressed directly from the top of the container to separate the entire liner assembly 100 from the bottom and the bottom assembly 300, so the disassembly of the liner assembly 100 is very convenient.

[0060] In one possible embodiment, as shown in Figures 1 and 5, the suction assembly 600 includes a first magnet 610 and a second magnet 620. The first magnet 610 is installed in the outer cover 210, and the second magnet 620 is installed in the outer bottom 320. The first magnet 610 and the second magnet 620 attract each other to secure the outer cover 210 to the outer bottom 320. Using the first magnet 610 and the second magnet 620 to replace the traditional buckle assembly makes operation more convenient.

[0061] In another possible embodiment, the attraction assembly includes a magnet and a magnetic metal member. The magnet is mounted in one of the outer cover 210 and the outer bottom 320, and the magnetic metal member is mounted in the other of the outer cover 210 and the outer bottom 320. The magnet and the magnetic metal member attract each other to securely attach the outer cover 210 to the outer bottom 320. The magnetic metal member is made of ferromagnetic material, such as iron, cobalt, and nickel.

[0062] It should be noted that those skilled in the art may make a number of modifications and improvements without departing from the concept of this application, and these modifications and improvements are all within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be based on the appended claims.

Claims

1. An inner liner assembly, characterized in that: The utility model comprises an inner cover (110), a middle ring (120) and a loading tray (130), wherein the inner cover (110) covers the middle ring (120), and the loading tray (130) is fixedly installed in the middle ring (120), and a first sealing ring (140) is interference-fitted between the inner cover (110) and the middle ring (120), so that the first sealing ring (140) can seal the middle ring (120), and a second sealing ring (150) is interference-fitted between the loading tray (130) and the middle ring (120), so that the second sealing ring (150) can seal the loading tray (130), and the inner cover (110), the middle ring (120) and the loading tray (130) are made of hard plastic, and the first sealing ring (140) and the second sealing ring (150) are made of elastic material, and the hardness of the hard plastic is greater than the hardness of the elastic material.

2. The inner container assembly according to claim 1, characterized in that: The hard plastic includes PET material, and the elastic material includes TPE material.

3. The inner container assembly according to claim 1, characterized in that: The second sealing ring (150) is fixedly provided on at least one of the inner side wall of the middle ring (120) and the outer side wall of the loading tray (130).

4. The inner container assembly according to claim 3, characterized in that: The middle ring (120) and the second sealing ring (150) are integrally formed by two-color injection molding; and / or the loading tray (130) and the second sealing ring (150) are integrally formed by two-color injection molding.

5. The inner container assembly according to claim 3, characterized in that: A circle of the second sealing ring (150) is fixedly provided on the outer wall of the loading tray (130), and the second sealing ring (150) is located at the upper end of the loading tray (130).

6. The inner container assembly according to claim 1, characterized in that: The inner cover (110) is rotatably mounted on the middle ring (120) via a first hinge assembly (400); a first cylinder (121) and a second cylinder (122) are fixedly provided on the middle ring (120); the second cylinder (122) is located outside the first cylinder (121); the first sealing ring (140) is located between the first cylinder (121) and the inner cover (110); the inner cover (110) and the second cylinder (122) are engaged and fixed; and the middle ring (120) and the loading tray (130) are engaged and fixed.

7. The liner assembly according to any one of claims 1 to 6, characterized in that: The first sealing ring (140) is fixedly provided on at least one of the outer wall of the inner cover (110) and the inner wall of the middle ring (120).

8. The inner container assembly according to claim 7, characterized in that: The inner cover 110 and the first sealing ring (140) are integrally formed by two-color injection molding; and / or the middle ring (120) and the first sealing ring (140) are integrally formed by two-color injection molding.

9. The inner container assembly according to claim 7, characterized in that: A circle of the first sealing ring (140) is fixedly provided on the outer side wall of the inner cover (110), and the first sealing ring (140) is located on the lower end surface of the inner cover (110).

10. The inner container assembly according to claim 9, characterized in that: When the inner cover (110) is covered on the middle ring (120), an exhaust channel is formed between the first sealing ring (140) and the middle ring (120), and the exhaust channel is used for the circulation of gas inside and outside the middle ring (120). There is an airtight fitting area between the first sealing ring (140) and the middle ring (120), and the exhaust channel is located on the side of the airtight fitting area away from the loading tray (130).

11. The inner container assembly according to claim 10, characterized in that: The outer side wall of the first sealing ring (140) extends radially outward to form an annular protrusion (141), and the inner side wall of the middle ring (120) is recessed inward to form an annular groove (124). The annular protrusion (141) is interference-fitted in the annular groove (124), and the annular protrusion (141) and the annular groove (124) are located in the airtight fitting area.

12. The inner container assembly according to claim 9, characterized in that: The lower end surface of the first sealing ring (140) is provided with an avoidance groove (142), wherein the upper end of the avoidance groove (142) is a closed end and the lower end is an open end.

13. A cosmetic container, characterized by: include: The liner assembly (100) according to any one of claims 1 to 12; a bottom assembly (300), the inner liner assembly (100) being detachably connected to the bottom assembly (300); and An outer cover assembly (200) is rotatably mounted on the bottom assembly (300) via a second hinge assembly (500); the outer cover assembly (200) can cover the inner cover (110); the outer cover assembly (200) and the bottom assembly (300) are fixed by suction via a suction assembly (600); the outer cover assembly (200) includes an outer cover (210) and a top sheet (220) fixedly attached to the outer cover (210); the top sheet (220) is an integrally molded plastic part; and a logo (221) is provided on the top sheet (220).

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