Coating material packaging box and coating material container

Abstract

The utility model relates to a coating material packaging box and a coating material container. The coating material packaging box comprises a sealing cover and a supporting ring, and the sealing cover is hinged to the supporting ring; a sealing ring and a first connecting cover ring are arranged on the lower end face of the sealing cover, and at least two clamping structures are arranged on the first connecting cover ring; the supporting ring is provided with a first connecting ring and a second connecting ring located on the outer side of the first connecting ring. A clamping groove matched with the clamping structure is formed in the second connecting ring; and under the condition that the sealing cover covers the supporting ring, the sealing ring is in interference fit with the inner side wall of the first connecting ring, and the clamping structure is clamped with the clamping groove in a matched mode. The elastic sealing ring is arranged on the sealing cover, so that the connecting force between the sealing cover and the supporting ring is enhanced, a tiny gap caused by rebounding of the elastic sealing ring can be prevented, meanwhile, the loosening risk possibly caused by vibration or impact is reduced, the sealing cover can still keep a tight covering state after being opened and closed for use for multiple times, and the sealing performance and the connecting stability of the dressing container are improved.

Description

Technical Field

[0001] The present application relates to the technical field of product packaging, and in particular to a coating material packaging box and a coating material container. Background Art

[0002] In the product packaging industry, ensuring the sealed preservation of internal products is the key to preventing product oxidation, deterioration and contamination. Existing coating material containers usually use elastic sealing rings to achieve the sealing of the sealing cover and the support ring to prevent the internal coating material from directly contacting the external environment. However, since the elastic sealing ring has a certain elastic force, when the sealing cover and the support ring are closed, the elastic sealing ring will generate a rebound force after being squeezed, resulting in a small gap at the connection between the sealing cover and the support ring, making it difficult to completely close the sealing cover; after multiple opening and closing uses, the elastic force of the elastic sealing ring gradually weakens, which can also cause the cover to not close tightly. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the present application provides a coating material packaging box and a coating material container, which adjust the connection force between the sealing cover and the support ring by cooperating with the sealing ring and the clamping structure, so as to improve the sealing and connection stability between the sealing cover and the support ring, and ensure the sealed preservation of the coating material.

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

[0005] The present application provides a coating material packaging box, comprising a sealing cover and a support ring, wherein the sealing cover is hinged to the support ring; a sealing ring and a first connecting cover ring are provided on the lower end surface of the sealing cover, and at least two snap-in structures are provided on the first connecting cover ring; a first connecting ring and a second connecting ring located outside the first connecting ring are provided on the support ring; a snap-in groove matching with the snap-in structure is provided on the second connecting ring; when the sealing cover is closed on the support ring, the sealing ring is interference-connected with the inner side wall of the first connecting ring, and the snap-in structure is snap-connected with the snap-in groove.

[0006] Furthermore, at least two of the clamping structures are arranged at equal intervals along the outer peripheral wall of the first connecting cover ring.

[0007] Furthermore, a first hinge assembly is provided between the sealing cover and the supporting ring, wherein a position of one of the clamping structures and a position of the first hinge assembly are symmetrical with respect to the center of the sealing cover.

[0008] Furthermore, in a semicircular area of ​​the first connecting cover ring away from the first hinge assembly, three clamping structures are arranged at equal intervals along its outer peripheral wall.

[0009] Furthermore, the sealing cover comprises a second connecting cover ring, the second connecting cover ring is located outside the first connecting cover ring, the inner diameter of the second connecting cover ring is larger than the outer diameter of the second connecting ring, and an inwardly recessed opening and closing buckle is provided on the outer side wall of the second connecting cover ring.

[0010] Furthermore, an exhaust channel is provided between the sealing ring and the support ring, and the exhaust channel is used for the flow of gas between the inside and outside of the support ring when the sealing cover is covered on the support ring.

[0011] Furthermore, an airtight fitting area is provided between the sealing ring and the supporting ring, and the exhaust passage is located in the airtight fitting area.

[0012] Furthermore, the exhaust channel includes at least one exhaust groove, and the exhaust groove is opened on the outer side wall of the sealing ring; or, the exhaust groove is opened on the inner side wall of the support ring.

[0013] Furthermore, the upper end of the exhaust groove is connected to the upper surface of the support ring, the inner side surface of the exhaust groove is connected to the inner side wall of the support ring, the lower end surface of the exhaust groove includes an inclined surface or an arc surface, and the lower end surface of the exhaust groove extends from the inner side surface of the exhaust groove to the inner side wall of the support ring.

[0014] Furthermore, the outer wall of the sealing ring extends radially outward to form at least one annular protrusion, and the inner wall of the first connecting ring is recessed inward to form at least one annular groove. The annular protrusion is interference fit in the annular groove, the annular protrusion is airtightly fit to the annular groove, and the exhaust groove is located above the annular groove.

[0015] Furthermore, the hardness of the sealing ring is smaller than that of the support ring, and the sealing ring is made of elastic material; an avoidance groove is provided on the sealing ring, and during the process of the sealing cover opening and closing on the support ring, the sealing ring can deform toward the avoidance groove.

[0016] The present application also provides a coating material container, comprising the coating material packaging box and an outer shell assembly, wherein the outer shell assembly comprises a bottom shell and an outer cover, wherein the coating material packaging box is detachably connected to the bottom shell; the outer cover is rotatably mounted on the bottom shell via a second hinge assembly, and the outer cover can be covered on the sealing cover.

[0017] The beneficial effects of this application are:

[0018] The present application enhances the connection force between the sealing cover and the support ring through the interference fit between the sealing ring and the inner side wall of the first connecting ring, and the matching snap-fit ​​between the snap-fit ​​structure and the snap-fit ​​groove, which can prevent the elastic sealing ring from rebounding and causing a small gap that is difficult to close completely; at the same time, it reduces the risk of loosening due to vibration or impact, so that the sealing cover can still maintain a tight cover state after multiple openings and closings. This double-protection design improves the sealing and connection stability of the coating body container, ensures the quality and safety of the internal coating body, and provides users with a more reliable and convenient use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is an exploded view of a coating material packaging box according to an embodiment of the present application;

[0021] Figure 2 This is a cross-sectional view of a coating material packaging box according to an embodiment of the present application;

[0022] Figure 3 for Figure 2 An enlarged view of the structure where the middle sealing cover is connected to the support ring;

[0023] Figure 4 This is a schematic structural diagram of a sealing cover of a coating material packaging box according to an embodiment of the present application;

[0024] Figure 5 This is a cross-sectional view of a sealing cover of a coating material packaging box according to an embodiment of the present application;

[0025] Figure 6 This is a schematic structural diagram of a support ring of a coating material packaging box according to an embodiment of the present application.

[0026] Among them, the reference numerals in the figure correspond to: 100-coating material packaging box, 10-sealing cover, 30-support ring, 11-first hinge, 12-first hinge axis, 13-first connecting cover ring, 14-clamping structure, 15-second connecting cover ring, 151-opening and closing buckle, 20-sealing ring, 21-annular protrusion, 22-avoidance groove, 30-support ring, 31-first connecting ring, 32-second connecting ring, 33-exhaust groove, 34-annular groove, 35-second hinge, 38-clamping slot, 40-loading tray. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Example:

[0031] The coating material packaging box is a component specially designed for use inside the coating material container, which has the functions of loading the coating material, protecting the coating material from contamination, providing structural support, and facilitating the use of the product. In the embodiment of the present application, the coating material includes but is not limited to liquid, powder, paste or cream. On the other hand, the coating material can be a cosmetic or skin care product.

[0032] like Figure 1-6As shown, an embodiment of the present application provides a coating material packaging box, including a sealing cover 10 , a support ring 30 and a loading tray 40 . The sealing cover 10 is hinged to the support ring 30 , and the loading tray 40 is sleeved in the support ring 30 .

[0033] A sealing ring 20 and a first connecting cover ring 13 are provided on the lower end surface of the sealing cover 10; at least two clamping structures 14 are provided on the first connecting cover ring 13; a first connecting ring 31 and a second connecting ring 32 located outside the first connecting ring 31 are provided on the supporting ring 30; a clamping groove 38 matching with the clamping structure 14 is provided on the second connecting ring 32; when the sealing cover 10 is covered on the supporting ring 30, the sealing ring 20 is interference connected with the inner side wall of the first connecting ring 31, and the clamping structure 14 is clamped with the clamping groove 38.

[0034] Specifically, the sealing cover 10 is rotatably disposed on the upper opening of the support ring 30, and the sealing cover 10 and the support ring 30 are interference-connected via the sealing ring 20, so that the sealing ring 20 can seal the support ring 30. The material loading tray 40 is used to store the coating material body.

[0035] Specifically, the sealing ring 20 is fixed on the lower end surface of the sealing cover 10. Optionally, the sealing ring 20 is an annular structure with both upper and lower ends open. A circle of sealing ring 20 is provided on the lower end surface of the sealing cover 10, and the surface of the sealing cover 10 in contact with the sealing ring 20 is an arc surface, thereby improving the sealing performance between the sealing cover 10 and the support ring 30. When the sealing cover 10 is covered on the support ring 30, the sealing ring 20 is deformed due to extrusion, and forms an interference connection with the inner side wall of the first connecting ring 31, thereby effectively preventing the leakage of the coating body and avoiding the coating body from contacting and being contaminated by the external air during storage. In some possible embodiments, the clamping structure 14 includes but is not limited to a convex point, a boss, a hook-shaped or toothed structure arranged on the first connecting cover ring 13. Correspondingly, the shape and size of the clamping groove 38 match the clamping structure 14 to ensure that the two can be accurately and firmly clamped together. When the sealing cover 10 is covered on the supporting ring 30 , the clamping structure 14 and the clamping groove 38 are engaged with each other to achieve a stable connection between the sealing cover 10 and the supporting ring 30 .

[0036] In the embodiment of the present application, the sealing ring 20 is made of elastic material, and the hardness of the sealing ring 20 is less than the hardness of the support ring 30 and the loading tray 40. Specifically, the sealing cover 10, the support ring 30 and the loading tray 40 can be made of hard plastics with high hardness, high toughness and high strength such as polypropylene PP, polystyrene PS and polyvinyl chloride PVC; preferably, they can be made of polyethylene terephthalate PET. PET material has excellent strength and rigidity, good transparency and high temperature resistance, which can ensure the high strength, high hardness and high transparency of the liner, thereby improving the overall quality and grade of the product. The sealing ring 20 can be made of TPE thermoplastic elastomer material. TPE material has excellent elasticity, its hardness is significantly lower than that of PET material, has the elasticity of rubber at room temperature, can be plasticized and formed at high temperature, has the advantages of high elasticity, aging resistance and oil resistance, and can well fill the small gap caused by the difference in material hardness, thereby ensuring the sealing of the liner. Optionally, the sealing ring 20 and the sealing cover 10 are integrally formed by two-color injection molding. The two-color injection molding process ensures that the structural connection between the sealing ring 20 and the sealing cover 10 is very tight, and can ensure seamless connection between the sealing ring 20 and the sealing cover 10 without additional seams or adhesives, which greatly enhances the strength, stability and sealing of the entire structure. The one-piece molding of the sealing ring 20 and the sealing cover 10 can also reduce production time, reduce production costs, and improve product production efficiency and aesthetics.

[0037] The present application enhances the connection force between the sealing cover and the support ring through the interference fit between the sealing ring 20 and the inner side wall of the first connecting ring 31, and the matching and snapping of the snapping structure 14 and the snapping groove 38, which can prevent the generation of a small gap due to the rebound of the elastic sealing ring, and reduce the risk of loosening due to vibration or impact, so that the sealing cover can still maintain a tight cover state after multiple opening and closing. This double-protection design improves the sealing and connection stability of the coating body container, ensures the quality and safety of the internal coating body, and provides users with a more reliable and convenient use experience.

[0038] Further, at least two clamping structures 14 are arranged at equal intervals along the outer peripheral wall of the first connection cover ring 13. In some possible embodiments, two, three, four or five clamping structures 14 may be arranged at equal intervals along the outer peripheral wall of the first connection cover ring 13. Arranging multiple clamping structures 14 at equal intervals can provide a more uniform connection force, so that the force on the sealing cover 10 is more balanced, deformation and looseness are avoided, which is conducive to improving the sealing effect of the sealing cover and extending the service life of the sealing cover.

[0039] Furthermore, a first hinge assembly is provided between the sealing cover 10 and the support ring 30, and the sealing cover 10 is turned over and opened and closed by the first hinge assembly. The position of one of the clamping structures 14 is symmetrical with the position of the first hinge assembly about the center of the sealing cover 10. Specifically, the first hinge assembly includes a first hinge 11, a second hinge 35 and a first hinge shaft 12, the first hinge 11 is fixedly mounted on the sealing cover 10, and the second hinge 35 is fixedly mounted on the support ring 30. During assembly, after the first hinge 11 and the second hinge 35 are docked, the first hinge shaft 12 is inserted into the first hinge 11 and the second hinge 35 to rotatably connect the sealing cover 10 with the support ring 30. In a possible embodiment, at least two clamping structures 14 and the first hinge assembly are arranged at equal intervals along the outer peripheral wall of the first connecting cover ring 13, and the position of one of the clamping structures 14 is symmetrical with the position of the first hinge assembly about the center of the sealing cover 10. The symmetrical design of the first hinge assembly and one of the clamping structures 14 ensures that both sides of the sealing cover 10 are evenly stressed during the flipping and opening process, thereby improving the stability and balance of the opening and closing of the sealing cover.

[0040] In the embodiment of the present application, in the semicircular area of ​​the first connection cover ring 13 away from the first hinge assembly, the three snap-in structures 14 are arranged at equal intervals along the outer peripheral wall thereof. In practical applications, after the sealing cover 10 and the support ring 30 are covered, the elastic sealing ring 20 will generate a rebound force after being squeezed, which may easily lead to deformation and gaps at the connection between the sealing cover and the support ring on the side away from the first hinge assembly. Therefore, in the present embodiment, the three snap-in structures are arranged at equal intervals in the semicircle on the side away from the first hinge assembly, which can evenly withstand the force generated by the rebound of the elastic sealing ring, effectively prevent the sealing cover and the support ring from deforming and generating gaps on the side away from the first hinge assembly due to the rebound of the elastic sealing ring, make the force on the sealing cover more reasonable, and improve the connection stability and sealing performance between the sealing cover and the support ring.

[0041] Further, the sealing cover 10 includes a second connection cover ring 15, which is located outside the first connection cover ring 13, and the inner diameter of the second connection cover ring 15 is larger than the outer diameter of the second connection ring 32. The outer wall of the second connection cover ring 15 is provided with an inwardly recessed opening and closing buckle 151. Specifically, when the sealing cover 10 is closed, the second connection cover ring 15 can cover the outside of the second connection ring 32, which provides convenience for the opening and closing action, and at the same time plays an additional protective role for the support ring 30. The covering of the second connection cover ring 15 can also prevent the entry of dust and dirt. One or more inwardly recessed opening and closing buckles 151 are provided on the outer wall of the second connection cover ring 15. The setting of the opening and closing buckles 151 not only facilitates the user to open and close the sealing cover 10, but also provides additional support and stability for the clamping structure 14 when the user's fingers apply force. Optionally, at least one snap-fit ​​structure 14 is disposed below the opening and closing buckle 151 , which can ensure that the snap-fit ​​structure 14 can smoothly cooperate with the snap-fit ​​groove 38 when the sealing cover 10 is opened or closed, thereby improving the convenience of use.

[0042] Furthermore, there is an exhaust channel between the sealing ring 20 and the support ring 30, and the exhaust channel is used for the circulation of gas between the inside and outside of the support ring 30 when the sealing cover 10 is covered on the support ring 30. When the sealing cover 10 is closed, the air between the sealing ring 20 and the support ring 30 can be discharged through the exhaust channel. Similarly, when the sealing cover 10 is opened, the external air can enter between the support ring 30 and the sealing ring 20 through the exhaust channel, thereby eliminating the internal and external pressure difference between the sealing ring 20 and the support ring 30, which is convenient for the smooth opening and closing of the sealing cover. In this application, the sealing ring is used to seal the sealing cover and the support ring to achieve the purpose of sealing the material loading tray, avoiding the situation that the coating material body is stored in the container and is contaminated due to long-term contact with the external air; the exhaust channel is used to facilitate the circulation of gas inside and outside the support ring, so as to achieve the effect of facilitating the opening and closing of the sealing cover, thereby improving the consumer experience. Therefore, this application has an exhaust function while ensuring the sealing effect, and has strong practicality.

[0043] There is an airtight fitting area between the sealing ring 20 and the support ring 30. Optionally, in the airtight fitting area, the sealing ring 20 and the support ring 30 are interference fit, and the exhaust channel is located in the airtight fitting area. Specifically, the loading tray 40 is sleeved in the support ring 30 and is located at the lower side of the airtight fitting area, and the exhaust channel is located on the side of the airtight fitting area away from the loading tray 40, so as to ensure that the exhaust channel does not affect the airtight effect between the sealing ring 20 and the support ring 30.

[0044] Furthermore, the exhaust channel includes at least one exhaust groove, and the exhaust groove is opened on the outer side wall of the sealing ring; or, the exhaust groove is opened on the inner side wall of the support ring.

[0045] In a possible embodiment, the exhaust channel includes at least two exhaust grooves 33, and the at least two exhaust grooves 33 are arranged at equal intervals along the outer wall of the sealing ring 20. When the sealing cover 10 is covered on the support ring 30, the exhaust grooves 33 are communicated with the outer side of the support ring 30. When the sealing cover 10 is completely covered on the support ring 30, the sealing ring 20 and the support ring 30 are interference fit to achieve sealing. In this embodiment, the exhaust grooves 33 are opened on the outer wall of the sealing ring 20. When the sealing cover 10 is combined with the support ring 30, the exhaust grooves 33 penetrate the upper end surface of the support ring 30 to achieve the purpose of ventilation.

[0046] In another possible implementation, at least two exhaust grooves 33 are arranged at equal intervals along the inner side wall of the support ring 30. Figure 3 and 6 As shown, in the embodiment of the present application, the exhaust groove 33 is provided on the support ring 30, that is, the exhaust groove 33 is provided on the inner side wall of the support ring 30 along the circumferential direction, and the exhaust groove 33 passes through the outer side of the support ring 30. The exhaust groove 33 is provided on the inner side wall of the support ring 30, which improves the overall aesthetics of the product.

[0047] The upper end of the exhaust groove 33 is connected to the upper surface of the support ring 30, the inner side surface of the exhaust groove 33 is connected to the inner wall of the support ring 30, the lower end surface of the exhaust groove 33 includes an inclined surface or an arc surface, and the lower end surface of the exhaust groove 33 extends from the inner side surface of the exhaust groove 33 to the inner wall of the support ring 30.

[0048] like Figure 3 As shown, the outer wall of the sealing ring 20 extends radially outward to form at least one annular protrusion 21, and the inner wall of the first connecting ring 13 of the support ring 30 is recessed inward to form at least one annular groove 34. The annular protrusion 21 is fitted in the annular groove 34 with interference fit, and the annular protrusion 21 and the annular groove 34 form an airtight fitting area, and the exhaust groove 33 is located above the annular groove 34, that is, the exhaust groove 33 is located on the side of the annular groove 34 away from the material loading tray 40. 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. The exhaust groove 33 is located above the annular groove 34. When the sealing cover 10 is covered on the support ring 30, the air between the sealing ring 20 and the support ring 30 is discharged from the outside of the support ring through the exhaust groove 33, so that the sealing cover is completely closed on the support ring; after the sealing cover is covered with the support ring, since the annular groove 34 of the support ring and the annular protrusion 21 of the sealing ring are located below the exhaust groove 33, the exhaust groove will not affect the sealing effect of the sealing ring.

[0049] Furthermore, the sealing ring 20 is provided with an avoidance groove 22, and in the process of the sealing cover 10 opening and closing on the support ring 30, the sealing ring 20 can deform toward the avoidance groove 22. The setting of the avoidance groove 22 provides a space for the sealing ring to move elastically. When the sealing cover 10 is closed, the support ring squeezes the outer wall of the sealing ring, so that the sealing ring deforms and avoids in the avoidance groove 22, so as to reduce the friction between the sealing ring and the support ring, that is, to reduce the difficulty of closing the sealing cover; when the sealing cover 10 is opened, the sealing ring 20 can also deform and avoid. Therefore, in the present application, an avoidance groove is provided on the sealing ring, and in the process of opening and closing the sealing cover, the sealing ring can deform and avoid, thereby reducing the difficulty of opening and closing the sealing cover, improving the consumption experience of the user, and at the same time reducing the friction between the sealing ring and the support ring, improving the sealing effect of the sealing ring, and extending the service life of the sealing ring.

[0050] This embodiment also provides a coating material container, including a coating material packaging box and a bottom shell assembly, the outer shell assembly includes a bottom shell and an outer cover, the coating material packaging box is detachably connected to the bottom shell; the outer cover is rotatably mounted on the bottom shell by a second hinge assembly, and the outer cover can be covered on the sealing cover 10.

[0051] In the embodiment of the present application, the coating material body packaging box 100 is installed in the coating material body container, and the coating material body packaging box 100 is detachably connected to the bottom shell. After the internal coating material is used up, the old coating material body packaging box 100 can be easily removed and replaced with a new liner, so that the outer shell assembly can be reused, which is beneficial to cost saving and environmental protection. During the assembly process, the coating material body packaging box 100 is first installed in the coating material body container, and then the required coating material is filled into the loading tray 40; the coating material body packaging box 100 is installed in the bottom shell. If a defect is caused by misoperation during the filling process, the loading tray 40 can be removed and replaced with a new loading tray without scrapping the entire container.

[0052] The lower surface of the loading tray 40 can be partially exposed to the outside or the lower surface of the loading tray 40 can be completely exposed to the outside. When the lower surface of the loading tray 40 is partially exposed to the outside, the loading tray 40 can be lifted upward from the lower end of the container to separate the entire coating material body packaging box 100 from the top and the bottom shell; when the lower surface of the loading tray 40 is completely exposed to the outside, the coating material body packaging box 100 can be pressed directly from the top of the container to separate the entire coating material body packaging box 100 from the bottom and the disassembly process is simple.

[0053] 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 coating material packaging box, characterized in that: It comprises a sealing cover (10) and a supporting ring (30), wherein the sealing cover (10) is hingedly connected to the supporting ring (30), and a sealing ring (20) and a first connecting cover ring (13) are provided on the lower end surface of the sealing cover (10); The first connecting cover ring (13) is provided with at least two snap-fitting structures (14); the support ring (30) is provided with a first connecting ring (31) and a second connecting ring (32) located outside the first connecting ring (31); the second connecting ring (32) is provided with a snap-fitting groove (38) that matches the snap-fitting structure (14); when the sealing cover (10) is covered on the support ring (30), the sealing ring (20) is interference-connected with the inner side wall of the first connecting ring (31), and the snap-fitting structure (14) is snap-fitted with the snap-fitting groove (38).

2. A coating material packaging box according to claim 1, characterized in that: At least two of the clamping structures (14) are arranged at equal intervals along the outer peripheral wall of the first connecting cover ring (13).

3. A coating material packaging box according to claim 1, characterized in that: A first hinge assembly is provided between the sealing cover (10) and the supporting ring (30), wherein the position of one of the clamping structures (14) and the position of the first hinge assembly are symmetrical with respect to the center of the sealing cover (10).

4. A coating material packaging box according to claim 3, characterized in that: In a semicircular area of ​​the first connecting cover ring (13) away from the first hinge assembly, three clamping structures (14) are arranged at equal intervals along its outer peripheral wall.

5. The coating material packaging box according to claim 1, characterized in that: The sealing cover (10) comprises a second connecting cover ring (15), the second connecting cover ring (15) is located outside the first connecting cover ring (13), the inner diameter of the second connecting cover ring (15) is larger than the outer diameter of the second connecting ring (32), and an inwardly recessed opening and closing buckle (151) is provided on the outer side wall of the second connecting cover ring (15).

6. A coating material packaging box according to claim 1, characterized in that: An exhaust channel is provided between the sealing ring (20) and the support ring (30), and the exhaust channel is used for the flow of gas between the inside and outside of the support ring (30) when the sealing cover (10) is covered on the support ring (30).

7. A coating material packaging box according to claim 6, characterized in that: An airtight fitting area is provided between the sealing ring (20) and the supporting ring (30), and the exhaust passage is located in the airtight fitting area.

8. The coating material packaging box according to claim 6, characterized in that: The exhaust channel comprises at least one exhaust groove (33), and the exhaust groove (33) is opened on the outer side wall of the sealing ring (20); or, the exhaust groove (33) is opened on the inner side wall of the supporting ring (30).

9. A coating material packaging box according to claim 8, characterized in that: The upper end of the exhaust groove (33) is connected to the upper surface of the support ring (30), the inner side surface of the exhaust groove (33) is connected to the inner side wall of the support ring (30), the lower end surface of the exhaust groove (33) comprises an inclined surface or a curved surface, and the lower end surface of the exhaust groove (33) extends from the inner side surface of the exhaust groove (33) to the inner side wall of the support ring (30).

10. The coating material packaging box according to claim 8, characterized in that: The outer wall of the sealing ring (20) extends radially outward to form at least one annular protrusion (21), and the inner wall of the first connecting ring (31) is recessed inward to form at least one annular groove (34). The annular protrusion (21) is interference fit in the annular groove (34), and the annular protrusion (21) and the annular groove (34) are airtightly fitted, and the exhaust groove (33) is located above the annular groove (34).

11. The coating material packaging box according to claim 1, characterized in that: The hardness of the sealing ring (20) is less than that of the support ring (30), and the sealing ring (20) is made of an elastic material; an escape groove (22) is provided on the sealing ring (20), and during the process of the sealing cover (10) opening and closing on the support ring (30), the sealing ring (20) can be deformed toward the escape groove (22).

12. A coating material container, characterized in that: It comprises the coating material packaging box and shell assembly as described in any one of claims 1 to 11, wherein the shell assembly comprises a bottom shell and an outer cover, and the coating material packaging box is detachably connected to the bottom shell; the outer cover is rotatably mounted on the bottom shell via a second hinge assembly, and the outer cover can be covered on the sealing cover (10).

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