Cosmetic inner container convenient to open and close and cosmetic container

Abstract

The invention relates to a cosmetic inner container convenient to open and close and a cosmetic container, the cosmetic inner container comprises an inner cover, a middle ring and a powder disc, the powder disc is fixedly installed in the middle ring, a sealing ring is fixedly arranged on the inner cover, the sealing ring is made of an elastic material, the hardness of the sealing ring is smaller than that of the middle ring, and the powder disc is fixedly installed in the middle ring. The sealing ring is used for sealing the middle ring, an avoiding groove is formed in the sealing ring, and the sealing ring can deform towards the avoiding groove in the process that the inner cover is opened and closed in the middle ring. The avoiding groove is formed in the sealing ring in the container, and the sealing ring can deform and avoid in the opening and closing process of the inner cover, so that the opening and closing difficulty of the inner cover is reduced, and the consumption experience of a user is improved.

Description

Technical Field

[0001] The present application relates to cosmetic packaging technology, and in particular to a cosmetic liner and a cosmetic container that are easy to open and close. Background Art

[0002] In the existing cosmetic containers, in order to ensure the sealed preservation of the materials, the inner cover and the middle ring are sealed by a sealing ring. However, during the process of the inner cover opening and closing on the middle ring, the sealing ring and the middle ring are in an interference fit state, which increases the difficulty of opening and closing the inner cover. In addition, during the process of opening and closing the inner cover, the sealing ring and the middle ring are seriously worn, which easily leads to the failure of the sealing performance of the sealing ring. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the present application provides a cosmetic liner that is easy to open and close, and a sealing ring in the cosmetic liner is provided with an avoidance groove. During the opening and closing process of the inner cover, the sealing ring can deform and avoid, thereby reducing the difficulty of opening and closing the inner cover and improving the user's consumption experience.

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

[0005] A cosmetic liner that is easy to open and close, comprising an inner cover, a middle ring and a powder tray, wherein the powder tray is fixedly installed in the middle ring, and a sealing ring is fixedly provided on the inner cover, wherein the sealing ring is made of an elastic material, and the hardness of the sealing ring is less than that of the middle ring, and the sealing ring is used to seal the middle ring. An avoidance groove is provided on the sealing ring, and during the process of the inner cover opening and closing the middle ring, the sealing ring can deform toward the avoidance groove.

[0006] Optionally, the sealing ring includes an annular structure with openings at both ends, the inner wall of the sealing ring is combined with the outer wall of the inner cover, and the longitudinal cross-section of the inner wall of the sealing ring includes interconnected arc segments and a first straight line segment, and the arc segment is located above the first straight line segment.

[0007] Optionally, the tangent of the arc segment is a straight line K, and the angle between the straight line K and the first straight line segment is a, and a is an obtuse angle.

[0008] Optionally, the avoidance groove includes a first side wall and a second side wall, the longitudinal cross-section of the first side wall includes a second straight line segment, the longitudinal cross-section of the second side wall includes a third straight line segment, the second straight line segment is arranged parallel to the first straight line segment, the third straight line segment is arranged parallel to the tangent of the arc segment, and the extension line of the second straight line segment intersects with the extension line of the third straight line segment.

[0009] Optionally, the avoidance groove is a columnar annular structure, and the avoidance groove is coaxially arranged with the sealing ring.

[0010] Optionally, the avoidance groove is a blind groove, the upper end of the avoidance groove is a closed end, and the lower end of the avoidance groove is an open end.

[0011] Optionally, there is an airtight fit between the sealing ring and the middle ring, the maximum outer diameter of the sealing ring is d1, the minimum inner diameter of the middle ring is d2, the maximum outer diameter of the sealing ring and the minimum inner diameter of the middle ring are both located at the airtight fit, wherein d1>d2, and the difference between d1 and d2 is 0.1mm to 0.5mm.

[0012] Optionally, the outer wall of the 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 form an airtight fit.

[0013] Optionally, the sealing ring is located at the lower end surface of the inner cover, and the inner cover and the sealing ring are integrally formed by two-color injection molding.

[0014] Optionally, when the inner cover is covered on the middle ring, an exhaust channel is formed between the sealing ring and the middle ring, and the exhaust channel is used for the circulation of gas inside and outside the middle ring.

[0015] Optionally, a first cylinder and a second cylinder are fixedly provided on the middle ring, the second cylinder is located outside the first cylinder, the sealing ring is airtightly attached to the inner wall of the first cylinder, and the second cylinder is clamped and fixed to the inner cover.

[0016] The present application also provides a cosmetic container, comprising:

[0017] The cosmetic liner;

[0018] A bottom component, the cosmetic liner is detachably connected to the bottom component;

[0019] The outer cover is rotatably mounted on the bottom assembly via a second hinge assembly, and the outer cover can cover the inner cover.

[0020] The beneficial effects of this application are:

[0021] 1) In this application, since the sealing ring is made of elastic material and an escape groove is provided on the sealing ring, a space for elastic movement is provided for the sealing ring. When the inner cover is closed, the middle ring squeezes the outer wall of the sealing ring, causing the sealing ring to deform and escape into the escape groove to reduce the friction between the sealing ring and the middle ring, that is, to reduce the difficulty of closing the inner cover; when the inner cover is opened, the sealing ring can also deform and escape. Therefore, in this application, an escape groove is provided on the sealing ring, and during the opening and closing process of the inner cover, the sealing ring can deform and escape, thereby reducing the difficulty of opening and closing the inner cover, improving the consumer experience of the user, and at the same time reducing the friction between the sealing ring and the middle ring, improving the sealing effect of the sealing ring, and extending the service life of the sealing ring.

[0022] 2) In the present application, an exhaust channel is provided between the sealing ring and the middle ring, and the exhaust channel is used for the circulation of gas inside and outside the middle ring. When the inner cover is closed, the air between the sealing ring and the middle ring can be discharged in time through the exhaust channel; when the inner cover is opened, the external air enters the area between the middle ring and the sealing ring through the exhaust channel, thereby eliminating the internal and external pressure difference between the area between the sealing ring and the middle ring, and facilitating the smooth opening and closing of the inner cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural schematic diagrams of the cosmetic container in Example 1 of the present application;

[0024] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0025] Figure 3 This is the second structural schematic diagram of the cosmetic container in Example 1 of the present application;

[0026] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0027] Figure 5 This is an exploded view of the cosmetic container in Example 1 of the present application;

[0028] Figure 6 This is one of the assembly drawings of the inner cover and the middle ring in Example 1 of the present application;

[0029] Figure 7 This is the second assembly diagram of the inner cover and the middle ring in Example 1 of the present application;

[0030] Figure 8 This is one of the structural schematic diagrams of the inner cover in Example 1 of the present application;

[0031] Fig. 9 This is the second structural schematic diagram of the inner cover in Example 1 of the present application;

[0032] Fig.10This is the third structural schematic diagram of the inner cover in Example 1 of the present application;

[0033] Fig.11 This is one of the structural schematic diagrams of the middle circle in Example 1 of the present application;

[0034] Fig.12 This is the second structural diagram of the middle circle in Example 1 of the present application;

[0035] Fig.13 This is one of the structural schematic diagrams of the powder tray in Example 1 of the present application;

[0036] Fig.14 This is the second structural schematic diagram of the powder tray in Example 1 of the present application;

[0037] Fig.15 This is a schematic diagram of the structure of the cosmetic container in Example 2 of the present application;

[0038] Fig.16 for Fig.15 Enlarged view of point C in the middle;

[0039] Fig.17 This is a schematic diagram of the structure of the cosmetic container in Example 3 of the present application;

[0040] Fig.18 This is a schematic diagram of the structure of the cosmetic container in Example 4 of the present application;

[0041] In the figure: 10-inner cover, 11-first hinge, 12-first hinge axis,

[0042] 20-seal ring, 21-annular protrusion, 22-avoidance groove, 23-arc segment, 24-first straight segment, 25-second straight segment, 26-third straight segment,

[0043] 30-middle ring, 31-first cylinder, 32-second cylinder, 33-exhaust groove, 34-annular groove, 35-second hinge, 36-mesh, 40-powder tray,

[0044] 50-outer cover, 51-third hinge, 52-second hinge axis, 53-groove, 54-lens, 55-first magnet, 56-magnetic metal part,

[0045] 60 - inner sole, 70 - outer sole, 71 - fourth hinge, 72 - button, 73 - hook, 74 - rear fastener, 75 - second magnet. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] Example 1: Figure 1-14As shown, a cosmetic container includes a cosmetic liner, the cosmetic liner includes an inner cover 10, a middle ring 30 and a powder tray 40, the powder tray 40 is fixedly installed in the middle ring 30, and a sealing ring 20 is fixedly provided on the inner cover 10. The sealing ring 20 is made of elastic material, and the hardness of the sealing ring 20 is less than the hardness of the middle ring 30. The sealing ring 20 is used to seal the middle ring 30 to achieve the airtight function of the powder tray 30, wherein the powder tray 40 stores cosmetic materials, and the sealing ring 20 is provided with an avoidance groove 22, and optionally, the avoidance groove 22 extends to the outside of the sealing ring 20. In the process of the inner cover 10 opening and closing the middle ring 30, that is, the process of the inner cover 10 opening or closing the middle ring 30, the sealing ring 20 can be deformed toward the avoidance groove 22, thereby avoiding the middle ring 30, and the effect of reducing the friction between the sealing ring 20 and the middle ring 30 is achieved. When the inner cover 10 is opened, the sealing ring 20 returns to its original shape, or when the inner cover 10 is closed on the middle ring 30 , the sealing ring 20 also returns to its original shape to seal the middle ring 30 .

[0050] 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.

[0051] In the present application, a sealing ring is used to seal the inner cover and the middle ring to achieve the purpose of sealing the powder tray, thereby preventing the cosmetic materials stored in the container from being contaminated due to long-term contact with the outside air.

[0052] Since the sealing ring 20 is made of elastic material and an escape groove 22 is provided on the sealing ring 20 to provide a space for elastic movement of the sealing ring, when the inner cover 10 is closed, the middle ring squeezes the outer wall of the sealing ring, so that the sealing ring deforms and escapes into the escape groove 22 to reduce the friction between the sealing ring and the middle ring, that is, to reduce the difficulty of closing the inner cover; when the inner cover 10 is opened, the sealing ring can also deform and escape. Therefore, in the present application, an escape groove is provided on the sealing ring, and during the opening and closing process of the inner cover, the sealing ring can deform and escape, thereby reducing the difficulty of opening and closing the inner cover, improving the consumer experience of the user, and at the same time reducing the friction between the sealing ring and the middle ring, improving the sealing effect of the sealing ring, and extending the service life of the sealing ring.

[0053] like Figure 1 and Figure 2 As shown, the sealing ring 20 comprises an annular structure with openings at both ends, the inner wall of the sealing ring 20 is combined with the outer wall of the inner cover 10, and the longitudinal section of the inner wall of the sealing ring 20 comprises an arc segment 23 and a first straight segment 24 connected to each other, and the arc segment 23 is located above the first straight segment 24. Figure 1 and Figure 2As shown, the direction where the outer cover 50 is located is defined as the upper side of the sealing ring 20, and the direction where the powder tray 40 is located is defined as the lower side of the sealing ring 20. The arc segment 23 is located above the first straight segment 24, which means that the arc segment 23 is closer to the outer cover 50 than the first straight segment 24. The so-called longitudinal section of the sealing ring 20 refers to the section through the axial center line of the inner cover 10. The arc segment 23 is located at the upper end of the sealing ring 20 and fits with the arc surface of the inner cover 10. The first straight segment 24 is located at the lower end of the sealing ring 20 and fits with the side surface of the inner cover 10. That is, the longitudinal section of the inner side wall of the sealing ring 20 includes the arc segment 23 and the first straight segment 24 to adapt to the structure of the outer side wall of the inner cover 10 to ensure the bonding strength and sealing effect between the sealing ring and the inner cover.

[0054] Optionally, the tangent of the arc segment 23 is a straight line K, and the angle between the straight line K and the first straight line segment 24 is a, and a is an obtuse angle.

[0055] like Figure 2 As shown, the avoidance groove 22 includes a first side wall and a second side wall, the longitudinal section of the first side wall includes a second straight line segment 25, the longitudinal section of the second side wall includes a third straight line segment 26, the second straight line segment 25 is arranged in parallel with the first straight line segment 24, the third straight line segment 26 is arranged in parallel with the tangent of the arc segment 23, and the extension line of the second straight line segment 25 intersects with the extension line of the third straight line segment 26. Optionally, the first side wall is cylindrical and the second side wall is conical. Designing the avoidance groove 22 in this shape can improve the uniformity of the wall thickness of the sealing ring, reduce the difficulty of injection molding, and facilitate the molding of the sealing ring.

[0056] like Figure 2 and Figure 4 As shown, the avoidance groove 22 is a blind groove, the upper end of the avoidance groove 22 is a closed end, and the lower end of the avoidance groove 22 is an open end. Due to the existence of the avoidance groove 22, when the sealing ring 20 is sealed on the middle ring 30, the sealing ring 20 can be deformed toward the avoidance groove, so that the inner cover 10 is convenient to cover the middle ring, reducing the friction between the sealing ring 20 and the middle ring 30. When the inner cover 10 is combined with the middle ring 30, the sealing ring 20 returns to normal to seal the middle ring 30.

[0057] There is an airtight fit between the sealing ring 20 and the middle ring 30, the maximum outer diameter of the sealing ring 20 is d1, the minimum inner diameter of the middle ring 30 is d2, the maximum outer diameter of the sealing ring 20 and the minimum inner diameter of the middle ring 30 are both located at the airtight fit, wherein d1>d2, and the difference between d1 and d2 is 0.1mm to 0.5mm. That is, at the airtight fit, the sealing ring 20 and the middle ring 30 are interference fit.

[0058] like Figure 1 and Figure 2As shown, the outer wall of the sealing ring 20 extends radially outward to form an annular protrusion 21, and the inner wall of the middle ring 30 is recessed inward to form an annular groove 34. The annular protrusion 21 is interference-fitted in the annular groove 34, and the annular protrusion 21 and the annular groove 34 form an airtight fit. The sealing effect of the sealing ring 20 can be further improved by using the annular protrusion 21 and the annular groove 34 that cooperate with each other.

[0059] like Figure 8-10 As shown, the sealing ring 20 is located at the lower end surface of the inner cover 10, and the inner cover 10 and the sealing ring 20 are integrally formed by two-color injection molding. The inner cover 10 and the sealing ring 20 are integrally formed by injection molding, so the bonding strength between the inner cover and the sealing ring is high and the sealing effect is good.

[0060] When the inner cover 10 is covered on the middle ring 30, an exhaust channel is formed between the sealing ring 20 and the middle ring 30, and the exhaust channel is used for the circulation of gas inside and outside the middle ring 30. There is an airtight joint between the sealing ring 20 and the middle ring 30, the powder tray 40 is located at the lower side of the airtight joint, and the exhaust channel is located at the upper side of the airtight joint, so as to ensure that the exhaust channel does not affect the airtight effect between the sealing ring 20 and the middle ring 30. The exhaust channel includes an exhaust groove 33. In one possible embodiment, the outer wall of the sealing ring 20 is provided with an exhaust groove 33 along the circumferential direction. In another possible embodiment, as shown in FIG. Fig.11 and Fig.12 As shown, the inner side wall of the middle ring 30 is provided with an exhaust groove 33 along the circumferential direction. When the inner cover 10 is closed, the air between the sealing ring 20 and the middle ring 30 can be discharged in time through the exhaust channel; when the inner cover is opened, the external air enters the area between the middle ring 30 and the sealing ring 20 through the exhaust channel, thereby eliminating the internal and external pressure difference between the area between the sealing ring 20 and the middle ring 30, and facilitating the smooth opening and closing of the inner cover 10.

[0061] like Fig.11 and Fig.12 As shown, the middle ring 30 is fixed with a first cylinder 31 and a second cylinder 32, the second cylinder 32 is located outside the first cylinder 31, the sealing ring 20 is airtightly attached to the inner wall of the first cylinder 31, and the second cylinder 32 is fixedly engaged with the inner cover 10. Optionally, the exhaust channel is located between the sealing ring 20 and the inner wall of the first cylinder 31. Optionally, the exhaust groove 33 is opened on the inner wall of the first cylinder 31. Figure 6 As shown, there is a gap between the first cylinder 31 and the second cylinder 32, the inner cover 10 is inserted into the gap, and the outer wall of the inner cover 10 is engaged with the inner wall of the second cylinder 32, and the outer wall of the sealing ring 20 is airtightly fitted with the inner wall of the first cylinder 31.

[0062] like Figure 1 , Figure 6 and Figure 7As shown, the inner cover 10 is rotatably mounted on the middle ring 30 through the first hinge assembly, the inner cover 10 is fixedly engaged with the middle ring 30, and the powder tray 40 is fixedly engaged with the middle ring 30. The first hinge assembly includes a first hinge 11, a second hinge 35 and a first hinge shaft 12. Fig. 9 As shown, the first hinge 11 is fixedly mounted on the inner cover 10. Fig.11 and Fig.12 As shown, the second hinge 35 is fixedly mounted on the middle ring 30. Figure 6 As shown, during assembly, after the first hinge 11 and the second hinge 35 are butted, the first hinge shaft 12 is inserted into the first hinge 11 and the second hinge 35 to rotatably connect the inner cover 10 and the middle ring 30. Figure 1 As shown, the inner cover 10 and the middle ring 30 are fixed by means of a card point and a card slot, a card point and a card point, etc., and the powder tray 40 and the middle ring 30 are fixed by means of a card point and a card slot, a card point and a card point, etc.

[0063] like Figure 1 and Figure 5 As shown, the cosmetic container further includes a bottom assembly and an outer cover 50 . The cosmetic liner is detachably connected to the bottom assembly. The outer cover 50 is rotatably mounted on the bottom assembly via a second hinge assembly. The outer cover 50 can cover the inner cover 10 .

[0064] like Figure 1 and Figure 5 As shown, the second hinge assembly includes a third hinge 51, a fourth hinge 71 and a second hinge shaft 52. Figure 5 As shown, the third hinge 51 is fixedly mounted on the outer cover 50, and the fourth hinge 71 is fixedly mounted on the outer bottom 70. Figure 1 As shown, during assembly, after the third hinge 51 and the fourth hinge 71 are connected, the second hinge shaft 52 is inserted into the third hinge 51 and the fourth hinge 71 to rotatably connect the outer cover 50 to the outer bottom 70. Optionally, the inner side of the outer cover 50 is fixedly fitted with the lens 54, and the inner cover 10 is placed with a powder puff for dipping the cosmetic material.

[0065] like Figure 1 and Figure 5 As shown, the bottom assembly includes an outer sole 70 and an inner sole 60 fixedly installed in the outer sole 70, and the middle ring 30 is detachably installed inside the inner sole 60. The inner sole 60 and the outer sole 70 are fixed by means of a clamping point and a clamping groove, a clamping point and a clamping point, etc.; the middle ring 30 and the inner sole 60 are fixed by means of a clamping point and a clamping groove, a clamping point and a clamping point, etc.

[0066] The inner cover 10, the middle ring 30 and the powder tray 40 form an inner liner. When the material in the powder tray 40 is used up, the inner liner is removed and replaced with a new one 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 inner liner assembly is first installed, and then the material is filled into the powder tray 40. After filling, the inner liner assembly is installed in the bottom assembly. During the process of filling the material, if a defect occurs due to misoperation, it is only necessary to remove the powder tray 40 separately and replace it with a new one.

[0067] The lower surface of the powder tray 40 may be partially exposed to the outside or the lower surface of the powder tray 40 may be completely exposed to the outside. When the lower surface of the powder tray 40 is partially exposed to the outside, the powder tray 40 can be lifted upward from the lower end of the container to separate the entire liner assembly from the top and the bottom assembly; when the lower surface of the powder tray 40 is completely exposed to the outside, the liner assembly can be pressed directly from the top of the container to separate the entire liner assembly from the bottom, so that the disassembly of the liner assembly is very convenient.

[0068] In Example 1, the outer cover 50 and the outer bottom 70 are fastened and fixed by a fastening assembly; Figure 1 and Figure 5 As shown, the fastening assembly includes a button 72 and a groove 53. The button 72 is installed in the outer bottom 70. A hook 73 is provided on the button 72. The inner side wall of the outer cover 50 is provided with a groove 53. The hook 73 is inserted into the groove 53 to fasten and fix the outer cover 50 and the outer bottom 70. A spring is fixed on the button 72. When in use, the spring is deformed by pressing the button 72, and the hook 73 is separated from the groove 53, so that the outer cover 50 can be opened. After releasing the button, the button 72 is reset by the spring. A rear fastener 74 is provided between the outer cover 50 and the outer bottom 70.

[0069] Example 2: Fig.15 and Fig.16 The difference between this embodiment and the first embodiment is that the avoidance groove 22 is a cylindrical annular structure, and the avoidance groove 22 is coaxially arranged with the sealing ring 20. Fig.16 As shown, the longitudinal section of the avoidance groove 22 is in an inverted U shape, with a simple structure and easy groove cutting.

[0070] In Embodiment 3 and Embodiment 4, the outer cover 50 and the outer bottom 70 are fixed by suction through the suction assembly. Fig.17 As shown, the suction assembly includes a first magnet 55 and a second magnet 75, the first magnet 55 is installed in the outer cover 50, the second magnet 75 is installed in the outer bottom 70, the first magnet 55 and the second magnet 75 are attracted to each other to fix the outer cover 50 and the outer bottom 70; the mesh 36 is welded on the middle ring 30, and the mesh 36 is located above the powder tray 40. In this embodiment, the first magnet 55 and the second magnet 75 are used to replace the traditional buckle assembly, which is more convenient to operate.

[0071] Embodiment 4, as Fig.18 As shown, the suction assembly includes a magnetic metal piece 56 and a second magnet 75. The second magnet 75 is installed in any one of the outer cover 50 and the outer bottom 70. The magnetic metal piece 56 is installed in the other of the outer cover 50 and the outer bottom 70. The second magnet 75 and the magnetic metal piece 56 are attracted to each other to fix the outer cover 50 and the outer bottom 70. The magnetic metal piece 56 is made of ferromagnetic material, and the ferromagnetic material includes iron, cobalt, nickel and other materials. In this embodiment, the second magnet 75 and the magnetic metal piece 56 are used to replace the snap-on assembly. Fig.13 The middle magnetic metal piece 56 is installed in the outer cover 50 , and the second magnet 75 is installed in the outer bottom 70 . Of course, the second magnet 75 can also be installed in the outer cover 50 , and the magnetic metal piece 56 can be installed in the outer bottom 70 .

[0072] In the present application, the outer cover 50 and the outer bottom 70 are fixed by a snap-fit ​​assembly or fixed by suction assembly, so the connection method between the two is simple and reliable, low in cost and easy to use.

[0073] 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. A cosmetic liner that is easy to open and close, characterized by: The invention comprises an inner cover (10), a middle ring (30) and a powder tray (40), wherein the powder tray (40) is fixedly installed in the middle ring (30), a sealing ring (20) is fixedly provided on the inner cover (10), the sealing ring (20) is made of elastic material, and the hardness of the sealing ring (20) is less than the hardness of the middle ring (30), the sealing ring (20) is used to seal the middle ring (30), and an avoidance groove (22) is provided on the sealing ring (20), and when the inner cover (10) is opened and closed on the middle ring (30), the sealing ring (20) can be deformed toward the avoidance groove (22).

2. The easy-to-open and -close cosmetic liner according to claim 1, characterized in that: The sealing ring (20) comprises an annular structure with openings at both ends, the inner wall of the sealing ring (20) being coupled to the outer wall of the inner cover (10), and the longitudinal cross-section of the inner wall of the sealing ring (20) comprising an arc segment (23) and a first straight segment (24) connected to each other, wherein the arc segment (23) is located above the first straight segment (24).

3. The easy-to-open and -close cosmetic liner according to claim 2, characterized in that: The tangent of the arc segment (23) is a straight line K, and the angle between the straight line K and the first straight line segment (24) is a, and a is an obtuse angle.

4. The easy-to-open and -close cosmetic liner according to claim 2, characterized in that: The avoidance groove (22) comprises a first side wall and a second side wall, the longitudinal section of the first side wall comprises a second straight line segment (25), the longitudinal section of the second side wall comprises a third straight line segment (26), the second straight line segment (25) is arranged in parallel with the first straight line segment (24), the third straight line segment (26) is arranged in parallel with a tangent of the arc segment (23), and an extension line of the second straight line segment (25) intersects with an extension line of the third straight line segment (26).

5. The easy-to-open and -close cosmetic liner according to claim 2, characterized in that: The avoidance groove (22) is in the form of a columnar annular structure, and the avoidance groove (22) and the sealing ring (20) are arranged coaxially.

6. The easy-to-open and -close cosmetic liner according to claim 1, characterized in that: The avoidance groove (22) is a blind groove, the upper end of the avoidance groove (22) is a closed end, and the lower end of the avoidance groove (22) is an open end.

7. The easy-to-open and -close cosmetic liner according to claim 1, characterized in that: There is an airtight fitting portion between the sealing ring (20) and the middle ring (30), the maximum outer diameter of the sealing ring (20) is d1, the minimum inner diameter of the middle ring (30) is d2, and the maximum outer diameter of the sealing ring (20) and the minimum inner diameter of the middle ring (30) are both located at the airtight fitting portion, wherein d1>d2, and the difference between d1 and d2 is 0.1 mm to 0.5 mm.

8. The easy-to-open and -close cosmetic liner according to claim 1, characterized in that: The outer wall of the sealing ring (20) extends radially outward to form an annular protrusion (21), and the inner wall of the middle ring (30) is recessed inward to form an annular groove (34). The annular protrusion (21) is interference-fitted in the annular groove (34), and the annular protrusion (21) and the annular groove (34) form an airtight fit.

9. The easy-to-open and -close cosmetic liner according to any one of claims 1 to 8, characterized in that: The sealing ring (20) is located on the lower end surface of the inner cover (10), and the inner cover (10) and the sealing ring (20) are integrally formed by two-color injection molding.

10. The easy-to-open and -close cosmetic liner according to any one of claims 1 to 8, characterized in that: When the inner cover (10) is covered on the middle ring (30), an exhaust passage is formed between the sealing ring (20) and the middle ring (30), and the exhaust passage is used for the circulation of gas inside and outside the middle ring (30).

11. The easy-to-open and -close cosmetic liner according to any one of claims 1 to 8, characterized in that: A first cylinder (31) and a second cylinder (32) are fixedly provided on the middle ring (30); the second cylinder (32) is located outside the first cylinder (31); the sealing ring (20) is airtightly attached to the inner wall of the first cylinder (31); and the second cylinder (32) is clamped and fixed to the inner cover (10).

12. A cosmetic container, characterized in that: include: The cosmetic liner according to any one of claims 1 to 11; A bottom component, the cosmetic liner is detachably connected to the bottom component; An outer cover (50) is rotatably mounted on the base assembly via a second hinge assembly, and the outer cover (50) can cover the inner cover (10).

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