Inner container assembly and cosmetic container comprising same

Abstract

The utility model relates to an inner container assembly and a cosmetic container comprising the inner container assembly, the inner container assembly comprises an inner cover, a middle ring and a material carrying disc, the inner cover covers the middle ring, the material carrying disc is fixedly installed in the middle ring, the inner cover and the middle ring are in interference fit through a first sealing ring, and the material carrying disc is fixedly installed in the middle ring. The inner cover is in interference fit with the middle ring through a first sealing ring so that the first sealing ring can seal the middle ring, the material carrying disc is in interference fit with the middle ring through a second sealing ring so that the second sealing ring can seal the material carrying disc, and the inner cover, the middle ring and the material carrying disc are made of hard plastic. The first sealing ring and the second sealing ring are made of elastic materials, and the hardness of the hard plastic is larger than that of the elastic materials. The inner container assembly is made of hard plastic, and the first sealing ring and the second sealing ring are used for sealing the inner container assembly, so that the inner container assembly with high hardness and high sealing performance is obtained.

Description

Technical Field

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

[0002] In the existing cosmetic containers, the inner liner assembly is used to store the cosmetic materials. The inner liner assembly includes an inner cover, a middle ring and a powder box. The inner cover is provided with a sealing ring to ensure the sealing effect of the materials. The current inner liner assembly is mostly made of polyolefin materials, so it cannot meet the consumer's requirements for higher strength of the inner liner assembly. If the inner liner assembly is made of high hardness materials, it cannot meet the requirements for the sealing of the inner liner assembly. Utility Model Content

[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, wherein the inner cover covers the middle ring, and the loading tray is fixedly installed in the middle ring. A first sealing ring is interference fit between the inner cover and the middle ring so that the first sealing ring can seal the middle ring, and a second sealing ring is interference fit between the loading tray and the middle 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, and 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 fixedly provided 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. An airtight fitting area is provided between the first sealing ring and the middle ring, and the exhaust channel is located on a 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 component; a bottom component, the inner liner component is detachably connected to the bottom component; and an outer cover component, the outer cover component is rotatably mounted on the bottom component via a second hinge component, the outer cover component can cover the inner cover, the outer cover component and the bottom component are fixed by suction via a suction component, the outer cover component comprises an outer cover and a top sheet fixedly attached to the outer cover, the top sheet is an integrally formed plastic part, and a logo is 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, 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 situation in which the cosmetic material storage container is contaminated due to long-term contact with the outside 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] Figure 1 This is one of the structural schematic diagrams of the cosmetic container in this application;

[0020] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0021] Figure 3 This is the second structural diagram of the cosmetic container in this application;

[0022] Figure 4 A top view of the cosmetic container in this application;

[0023] Figure 5 An exploded view of the cosmetic container in this application;

[0024] Figure 6 It is a schematic diagram of the structure of the inner cover in this application;

[0025] Figure 7 This is one of the structural diagrams of the middle circle in this application;

[0026] Figure 8 This is the second structural diagram of the middle circle in this application;

[0027] Fig. 9 for Figure 8 Cross-sectional view along the middle line BB;

[0028] Fig.10 This is a schematic diagram of the structure of the material 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 cloth, 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 sheet, 221-logo, 230-lens, 300-bottom assembly, 310-inner bottom, 320-outer bottom,

[0031] 400-first hinge assembly, 410-first hinge, 420-second hinge, 430-first hinge axis,

[0032] 500-second hinge assembly, 510-third hinge, 520-fourth hinge, 530-second hinge axis,

[0033] 600 - suction assembly, 610 - first magnet, 620 - second magnet. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the embodiments described in the present application are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present 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 present 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 of their variations 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 that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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.

[0037] Example: Figure 1-10 As shown, 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, 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, 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, the cosmetic materials can be powdery, paste-like, ointment-like cosmetics or skin care products, the inner cover 110, the middle ring 120 and the loading tray 130 are made of hard plastic, 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.

[0038] Elastic materials include thermoplastic elastomers and various special saturated rubbers that cannot be vulcanized with sulfur, among which thermoplastic elastomers include thermoplastic polyurethane elastomer rubber TPU, thermoplastic polyester elastomer TPEE, styrene-butadiene-styrene block copolymer SBS, etc.

[0039] In the present application, the liner assembly 100 includes an inner cover 110, a middle ring 120 and a loading tray 130, wherein 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, wherein the liner assembly 100 is made of hard plastic, which meets the consumer's demand for a high-hardness 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 situation in which the cosmetic material storage container is contaminated due to long-term contact with the external air; a second sealing ring 150 made of elastic material is provided between the middle ring 120 and the loading tray 130, which prevents 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 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.

[0040] Wherein, the hard plastic includes PET material, and the elastic material includes TPE material. PET (PolyEthyleneTerephthalate) is polyethylene terephthalate, which is a plastic with excellent strength and rigidity, good transparency and can withstand high temperature, and is suitable for making high-strength, transparent and high-temperature resistant containers. TPE material is a thermoplastic elastomer material, and TPE has good elasticity. It is used between the inner cover 110 and the middle circle 120 made of PET, or between the middle circle 120 and the loading tray 130, and can play 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, which improves the quality and grade of the product. In order to solve the problem of poor sealing performance between the high-hardness liner, the middle circle and the loading tray, a first sealing ring is provided between the inner cover and the middle circle, and a second sealing ring is provided between the loading tray and the middle circle, and 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.

[0041] Optionally, a second sealing ring 150 is fixedly disposed 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 implementation, a circle of second sealing ring 150 is disposed 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.

[0042] In a second possible implementation, the outer wall of the material loading tray 130 is provided with a second sealing ring 150, and the second sealing ring 150 is airtightly attached to the inner wall of the middle ring 120. Figure 1 and Fig.10As shown, the second sealing ring 150 is located at the upper end of the material loading tray 130, and the second sealing ring 150 extends to the opening of the material loading tray 130. Figure 3 As shown, a mesh cloth 125 is welded on the middle ring 120, and the mesh cloth 125 is located above the material loading tray 130. The second sealing ring 150 is located below the mesh cloth 125. When the material loading tray 130 is installed on the middle ring 120, the second sealing ring 150 is interference-fitted with the inner side wall of the middle ring 120. Optionally, the second sealing ring 150 is an annular structure with both upper and lower ends open.

[0043] 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 airtightly. The above three methods can all achieve the purpose of sealing the loading tray 130 .

[0044] Optionally, 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. The middle ring 120 and the second sealing ring 150, the loading tray 130 and the second sealing ring 150 are integrally formed by two-color injection molding, so that the bonding strength between the second sealing ring 150 and the middle ring 120 or the second sealing ring 150 and the loading tray 130 is high and the sealing effect is good.

[0045] like Figure 3 and Figure 5 As shown, the inner cover 110 is rotatably mounted on the middle ring 120 through the first hinge assembly 400. Figure 7-9 As shown, the middle ring 120 is fixed with a first cylinder 121 and a second cylinder 122, and the second cylinder 122 is located outside the first cylinder 121. Figure 2 As shown, the first sealing ring 140 is located between the first cylinder 121 and the inner cover 110, the inner cover 110 is fixedly engaged with the second cylinder 122, and the middle ring 120 is fixedly engaged with the loading tray 130. Figure 3 and Figure 5 As shown, the first hinge assembly 400 includes a first hinge 410, a second hinge 420 and a first hinge shaft 430. Figure 5 and Figure 6 As shown, the first hinge 410 is fixedly mounted on the inner cover 110. Figure 5 and Figure 7 As shown, the second hinge 420 is fixedly mounted on the middle ring 120. Figure 3 and Figure 5As shown, during assembly, after the first hinge 410 and the second hinge 420 are butted, the first hinge shaft 430 is inserted into the first hinge 410 and the second hinge 420 to rotatably connect the inner cover 110 and the middle ring 120. The inner cover 110 and the middle ring 120 are fixed by means of a card point and a card slot, a card point and a card point, etc., and the loading tray 130 and the middle ring 120 are fixed by means of a card point and a card slot, a card point and a card point, etc.

[0046] Optionally, a first sealing ring 140 is fixedly disposed 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 implementation, a circle of first sealing ring 140 is disposed 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.

[0047] In a second possible implementation, the outer wall of the inner cover 110 is provided with a first sealing ring 140, and the first sealing ring 140 is airtightly attached to the inner wall of the middle ring 120. Figure 1 As shown, the first sealing ring 140 is located at 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. A circle of the first sealing ring 140 is provided on the lower end surface of the inner cover 110, and the surface of the inner cover 110 in contact with the first sealing ring 140 is an arc surface, thereby improving the sealing performance between the inner cover 110 and the middle ring 120.

[0048] 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 circle of first sealing ring 140 , and the two first sealing rings 140 fit airtightly. The above three methods can all achieve the purpose of sealing the loading tray 130 .

[0049] Optionally, 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. The middle ring 120 and the first sealing ring 140, the inner cover 110 and the first sealing ring 140 are integrally formed by two-color injection molding, so that the bonding strength between the first sealing ring 140 and the middle ring 120 or the first sealing ring 140 and the inner cover 110 is high and the sealing effect is good.

[0050] like Figure 1 and Figure 2As shown, 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. 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. The loading tray 130 is located at the lower side of the airtight fitting, and the exhaust channel is located at the upper side of the airtight fitting, so as to ensure that the exhaust channel does not affect the airtight effect between the first sealing ring 140 and the middle ring 120. The exhaust channel includes an exhaust groove 123. In one possible embodiment, the outer wall of the first sealing ring 140 is provided with an exhaust groove 123 along the circumferential direction. In another possible embodiment, as shown in FIG. Figure 2 , Figure 7 and Fig. 9 As shown, the inner side wall of the middle ring 120 is provided with an exhaust groove 123 along the circumferential direction, that is, the exhaust groove 123 is provided in the first cylinder 121. When the inner cover 110 is closed, the air between the first sealing ring 140 and the middle ring 120 can be discharged in time through the exhaust channel; when the inner cover 110 is opened, the 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, and facilitating the smooth opening and closing of the inner cover 110.

[0051] like Figure 2 and Fig. 9 As shown, 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 is interference fit in the annular groove 124, and the annular protrusion 141 and the annular groove 124 are located in an airtight fitting area. The sealing effect of the first sealing ring 140 can be further improved by using the annular protrusion 141 and the annular groove 124 that cooperate with each other.

[0052] like Figure 2 As shown, the lower end surface of the first sealing ring 140 is provided with an escape groove 142, the upper end of the escape groove 142 is a closed end, and the lower end is an open end. The escape groove 142 is a blind groove, the upper end of the escape groove 142 is a closed end, and the lower end is an open end. Due to the existence of the escape groove 142, when the first sealing ring 140 is sealed on the middle ring 120, the first sealing ring 140 can be deformed toward the escape groove 142, so that the inner cover 110 is convenient to cover the middle ring 120, reducing the friction between the first sealing ring 140 and the middle ring 120. When the inner cover 110 is combined with the middle ring 120, the first sealing ring 140 returns to normal to seal the middle ring 120.

[0053] like Figure 1-4As shown, a cosmetic container includes: an inner liner component 100; a bottom component 300, the inner liner component 100 and the bottom component 300 are detachably connected; and an outer cover component 200, the outer cover component 200 is rotatably installed on the bottom component 300 through a second hinge component 500, the outer cover component 200 can cover the inner cover 110, the outer cover component 200 and the bottom component 300 are fixed by suction through a suction component 600, the outer cover component 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 formed plastic part, and a logo 221 is provided on the top sheet 220.

[0054] The top sheet 220 has a leather-like appearance and leather-like touch. It is attached to the outer surface of the cosmetic container, which not only protects the container, but also gives people a leather-like visual sense, thereby improving the grade of the product. The top sheet 220 is made of plastic material, which is more wear-resistant and elastic than leather. Compared with the traditional stamped silicone substrate combined with the imitation leather surface product, 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 of TPU material, a patch substrate of PP material, a patch substrate of PVC material, or a patch substrate of PET material. Among them, TPU (ThermoPlasticpolyUrethane) is thermoplastic polyurethane elastomer rubber, PET (PolyEthyleneTerephthalate) is polyethylene terephthalate, PP (PolyPropylene) is polypropylene, and PVC (PolyVinylChloride) is polyvinyl chloride.

[0055] like Figure 1-5 As shown, 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 clamping points and clamping grooves, clamping points and clamping points, etc.; the middle ring 120 and the inner sole 310 are fixed by means of clamping points and clamping grooves, clamping points and clamping points, etc.

[0056] like Figure 1 and Figure 5 As shown, 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 FIG. Figure 1As shown, during assembly, after the third hinge 510 and the fourth hinge 520 are connected, 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 fitted with the lens 230, and the inner cover 110 is placed with a powder puff for dipping the cosmetic material.

[0057] The inner cover 110, the middle ring 120 and the loading tray 130 form the liner assembly 100. When the material in the loading tray 130 is used up, the liner assembly 100 is disassembled and replaced with a new liner assembly 100 for continued use. Therefore, other components in the cosmetic container can be reused, which is energy-saving, environmentally friendly and cost-saving. When assembling, the liner assembly 100 is first installed, and then the material is filled into the loading tray 130. After filling, the liner assembly 100 is installed in the bottom assembly 300. During the process of filling the material, if a defect occurs due to misoperation, it is only necessary to remove the loading tray 130 separately and replace it with a new loading tray 130.

[0058] 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.

[0059] In a possible implementation, Figure 1 and Figure 5 As shown, 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 are attracted to each other to fix the outer cover 210 and the outer bottom 320. The first magnet 610 and the second magnet 620 are used to replace the traditional buckle assembly, which is more convenient to operate.

[0060] In another possible implementation, the suction assembly includes a magnet and a magnetic metal piece, the magnet is installed in any one of the outer cover 210 and the outer bottom 320, the magnetic metal piece is installed in the other of the outer cover 210 and the outer bottom 320, and the magnet and the magnetic metal piece are attracted to each other to attract and fix the outer cover 210 and the outer bottom 320. The magnetic metal piece is made of ferromagnetic material, and the ferromagnetic material includes iron, cobalt, nickel and other materials.

[0061] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the attached claims.

Claims

1. An inner liner assembly, characterized in that: The invention 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); 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); 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); 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 wall of the middle ring (120) and the outer 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 material 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 side wall of the material loading tray (130), and the second sealing ring (150) is located at the upper end of the material 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 mounted 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 snap-fitted and fixed; and the middle ring (120) and the loading tray (130) are snap-fitted 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). An airtight fitting area is provided between the first sealing ring (140) and the middle ring (120), and the exhaust channel is located on a side of the airtight fitting area away from the loading tray (130).

11. The liner assembly according to claim 10, characterized in that: 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) is interference fit 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 escape groove (142), the upper end of the escape groove (142) is a closed end, and the lower end is an open end.

13. A cosmetic container, characterized in that: include: The liner assembly (100) according to any one of claims 1 to 12; A bottom assembly (300), the liner assembly (100) being detachably connected to the bottom assembly (300); and, An outer cover assembly (200), wherein 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), the outer cover assembly (200) and the bottom assembly (300) are fixed by suction via a suction assembly (600), the outer cover assembly (200) comprises an outer cover (210) and a top sheet (220) fixedly attached to the outer cover (210), the top sheet (220) is an integrally formed plastic part, and a logo (221) is provided on the top sheet (220).

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