Sealing structure and powder puff box

Abstract

The present invention relates to the technical field of box sealing, and more particularly to a sealing structure and a powder puff box. The sealing structure comprises: a box having an opening; a cover plate for covering the opening; a locking assembly for maintaining the cover plate and the box body in contact; and a sealing member, wherein the peripheral edge of the sealing member is made of an elastic material, and the middle portion of the sealing member is fixedly connected to the middle portion of the cover plate via a protrusion. When the cover plate covers the box opening, the peripheral edge of the sealing member abuts against the peripheral side of the box opening, and the cover plate applies pressure toward the interior of the box body to the sealing member via the protrusion. This application can effectively avoid the situation where the sealing is poor in some parts after the cover plate is closed.

Description

Technical Field

[0001] The present invention relates to the technical field of box sealing, and in particular to a sealing structure and a powder puff box. Background Art

[0002] The existing powder puff box adopts a hinged cover, and in order to achieve airtightness inside the box, an annular flange and a matching annular groove are usually provided on the cover and the circumference of the box opening respectively. During the process of hinged connection to the cover, the annular flange and the annular groove gradually fit together to achieve airtightness inside the box. However, due to the hinge, the movement between the annular flange and the annular groove is an arc movement with the hinge axis as the rotation axis. There is a partial contact position between the annular flange and the annular groove, and the sealing is poor. In order to improve the sealing, the two are designed to fit tightly during design, which makes it difficult to close during use. In other words, the closing resistance is relatively large. Summary of the Invention

[0003] In order to avoid the situation where some parts of the cover are not sealed well after the cover is closed, the present application provides a sealing structure.

[0004] The above-mentioned invention objective of this application is achieved through the following technical solutions:

[0005] A sealing structure comprising:

[0006] a box body having an opening;

[0007] a cover plate for covering the opening;

[0008] A locking assembly for keeping the cover plate and the box body closed;

[0009] A sealing member, wherein the periphery of the sealing member is made of elastic material, and the middle portion of the sealing member is fixedly connected to the middle portion of the cover plate via a protrusion;

[0010] When the cover plate covers the box body opening, the peripheral edge of the sealing member abuts against the peripheral side of the box body opening, and the cover plate applies pressure toward the inside of the box body to the sealing member through the protrusion.

[0011] By adopting the above technical solution, when the cover plate and the box body are connected in a hinged manner, when the cover plate rotates around the hinge axis to cover the opening of the box body, the sealing member on the inner side of the cover plate rotates along with the cover plate. When the cover plate is about to cover the opening of the box body, for example, when there is still an opening angle of 5° to 10° between the cover plate and the box body, the side of the peripheral edge of the sealing member on the inner side of the cover plate close to the hinge axis first contacts the side of the box body opening close to the hinge axis. In the subsequent process of rotating the cover plate until the box body opening is completely covered, the peripheral edge of the sealing member on the inner side of the cover plate close to the hinge rotates less, while the peripheral edge of the sealing member on the side of the cover plate away from the hinge rotates more. If the cover plate is continued to be rotated, the sealing member will be The plate is completely covered with the box body opening, and the cover plate is kept covering the box body opening by the locking assembly. The seal as a whole can be completely covered at the box body opening position, and the periphery of the seal is completely in contact with the peripheral side of the box body opening. At this time, the cover plate in the covered state provides a pressure toward the inside of the box body to the seal, so that the peripheral edge of the seal and the peripheral side of the box body opening are deformed and compressed, thereby achieving sealing of the inside of the box body. Compared with the annular flange and annular groove method mentioned in the background technology, there will be no problem of poor sealing at some contact positions. The force point of the present application solution after covering is located in the middle of the seal, that is, the force is evenly distributed around the periphery of the seal, so the sealing effect is good at all parts of the periphery.

[0012] In a preferred example, the present application can be further configured as follows: the periphery of the sealing member and the surface of the peripheral side of the box opening that contacts each other are both arranged in an arc shape.

[0013] By adopting the above technical solution, during the closing process of the cover plate, the arc surface can transition smoothly between the periphery of the seal and the peripheral side of the box opening, and the contact surface is larger during deformation, resulting in better sealing.

[0014] In a preferred example, the present application can be further configured as follows: the side of the periphery of the seal away from the inside of the box body is recessed toward the inside of the box body, so that the longitudinal section of the periphery of the seal is generally arc-shaped.

[0015] By adopting the above technical solution, since the peripheral edge of the seal on the inner side of the cover plate close to the hinge axis first contacts the peripheral side of the box body opening close to the hinge axis, in the process of subsequently rotating the cover plate to completely cover the box body opening, the longitudinal section of the peripheral edge of the seal is generally arc-shaped, which can provide space for the peripheral edge of the seal close to the hinge axis.

[0016] In a preferred example, the present application can be further configured as follows: an abutment ring is further provided on the inner side of the box body opening, and when the cover plate covers the box body opening, the periphery of the sealing member also abuts against the abutment ring.

[0017] By adopting the above technical solution, the sealing effect is further improved.

[0018] In a preferred example, the present application can be further configured as follows: the abutment ring extends inward to form an abutment ridge, and when the cover plate covers the opening of the box body, the periphery of the seal also abuts against the upper surface of the abutment ring.

[0019] By adopting the above technical solution, since the periphery of the seal is made of a soft material with elasticity, after the cover plate covers the opening of the box body, the periphery of the seal contacts the upper surface of the abutting ridge, thereby providing a larger area of ​​bearing for the periphery of the seal and reducing the possibility of the seal sagging.

[0020] In a preferred example, the present application can be further configured as follows: the abutment ring is clamped on the inner side of the box body opening.

[0021] In a preferred example, the present application can be further configured as follows: the protrusion includes:

[0022] a first protrusion, wherein the first protrusion is fixedly connected to the cover plate;

[0023] The second protrusion is fixedly connected to the sealing member, and the first protrusion and the second protrusion are fixed by clamping.

[0024] By adopting the above technical solution, independent injection molding and subsequent assembly between the sealing member and the cover plate are achieved.

[0025] In a preferred example, the present application can be further configured as follows: the sealing member includes:

[0026] a first connecting plate, the first connecting plate comprising a middle plate and an outer frame, the middle plate and the outer frame being connected by a plurality of spokes, grooves being formed between the plurality of spokes, and the protrusion being provided between the middle plate and the cover plate;

[0027] A second connecting plate is fixedly connected to the first connecting plate, and the second connecting plate is provided with a receiving groove for the first connecting plate to be embedded. The receiving groove is provided with a plurality of ridges for being embedded in the plurality of embedding grooves in a one-to-one correspondence.

[0028] By adopting the above technical solution, independent injection molding and subsequent assembly between the first connecting plate and the second connecting plate are achieved, and through the arrangement of multiple spokes, the force exerted by the middle part of the first connecting plate on the middle part of the second connecting plate is relatively gentle.

[0029] The second object of the present invention is achieved through the following technical solutions:

[0030] A powder puff box, comprising a sealing structure as described above, wherein the sealing structure is installed in the powder puff box, the powder puff box has an opening, and the opening side of the powder puff box is consistent with the opening side of the box body; the peripheral side of the cover plate extends toward the side away from the box body to form a peripheral wall, and an accommodating cavity for accommodating a powder puff is formed between the peripheral wall and the cover plate; the powder puff box is provided with a cover body for covering the opening of the powder puff box.

[0031] By adopting the above technical solution, the powder puff box with this sealing structure is utilized, the powder is placed inside the box body, and the powder puff is accommodated in the accommodating cavity. When in use, the cover body can be opened to take out the powder puff box on the cover plate, and then the box body is opened through the cover plate to take out the powder for use; after use, the cover plate is rotated to completely cover the opening of the box body, and the entire sealing member can be completely covered at the opening position of the box body, and the peripheral edge of the sealing member completely abuts and fits the peripheral side of the box body opening, and at this time, the cover plate in the covered state provides a pressure toward the inside of the box body to the sealing member, so that the peripheral edge of the sealing member is deformed and pressed at the contact position with the peripheral side of the box body opening, thereby achieving sealing of the inside of the box body, and the sealing effect at all parts of the peripheral edge is good, which can effectively prevent the powder in the box body from leaking out.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. When the cover plate and the box body are connected in a hinged manner, when the cover plate rotates around the hinge axis to cover the opening of the box body, the seal on the inner side of the cover plate rotates along with the cover plate. When the cover plate is about to cover the opening of the box body, for example, when there is still an opening angle of 5° to 10° between the cover plate and the box body, the side of the peripheral edge of the seal on the inner side of the cover plate close to the hinge axis first contacts the side of the box body opening close to the hinge axis. In the subsequent process of rotating the cover plate until it completely covers the opening of the box body, the peripheral edge of the seal on the inner side of the cover plate close to the hinge rotates less, while the peripheral edge of the seal on the side of the cover plate away from the hinge rotates more. Continue to rotate the cover plate. When the box body opening is completely closed, the entire sealing member can be completely covered at the box body opening position, and the periphery of the sealing member completely abuts and fits the periphery of the box body opening. At this time, the cover plate in the closed state provides a pressure toward the inside of the box body to the sealing member, so that the contact position between the periphery of the sealing member and the periphery of the box body opening is deformed and compressed, thereby achieving sealing inside the box body. Compared with the annular flange and annular groove method mentioned in the background art, there is no problem of poor sealing at some contact positions during the process of hinged connection to the cover body. The force point of the present application solution after closing is located in the middle of the sealing member, that is, the force is evenly applied at all parts of the periphery of the sealing member, so the sealing effect is good at all parts of the periphery.

[0034] 2. Since the peripheral edge of the seal on the inner side of the cover plate, which is closer to the hinge axis, first contacts the peripheral side of the box body opening, when the cover plate is rotated to completely cover the box body opening, the longitudinal section of the peripheral edge of the seal is generally arc-shaped, which can provide space for the peripheral edge of the seal, which is closer to the hinge axis;

[0035] 3. The seal and the cover plate are independently produced and subsequently assembled. Furthermore, the multiple spokes provide a gentler force between the middle of the first connecting plate and the middle of the second connecting plate.

[0036] 4. The powder puff box utilizing this sealing structure has the powder placed inside the box body and the powder puff accommodated in the accommodating cavity. When in use, the cover body can be opened to take out the powder puff box on the cover plate, and then the box body can be opened through the cover plate to take out the powder for use. After use, the cover plate is rotated to completely cover the opening of the box body, and the entire sealing member can be completely covered at the opening position of the box body, and the peripheral edge of the sealing member completely abuts and fits against the peripheral side of the box body opening. At this time, the closed cover plate provides a pressure toward the inside of the box body to the sealing member, so that the peripheral edge of the sealing member is deformed and pressed at the contact position with the peripheral side of the box body opening, thereby achieving sealing of the inside of the box body. The sealing effect at all peripheral edges is good, which can effectively prevent the powder in the box body from leaking out. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural diagram of a sealing structure in one embodiment of the present application;

[0038] Figure 2 is a cross-sectional schematic diagram of a sealing structure in one embodiment of the present application;

[0039] Figure 3 is a structural schematic diagram of a sealing member in a sealing structure in one embodiment of the present application;

[0040] Figure 4 It is a structural diagram of a powder puff box in one embodiment of the present application.

[0041] Figure numerals: 1. box body; 2. cover plate; 3. locking assembly; 4. seal; 41. periphery; 51. first protrusion; 52. second protrusion; 6. abutment ring; 7. abutment ridge; 8. first connecting plate; 81. middle plate; 82. outer frame; 83. spoke; 9. embedding groove; 10. second connecting plate; 11. accommodating groove; 12. ridge; 13. powder puff box; 14. peripheral wall; 15. accommodating cavity; 16. cover body; 17. lace. DETAILED DESCRIPTION

[0042] The following description of exemplary embodiments of the present application is made in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0043] It should be noted that the terms "first," "second," and the like in the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0044] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates an "or" relationship between the related objects.

[0045] The sealing structure and powder puff box of the present application will be described below with reference to the accompanying drawings.

[0046] A powder puff box in the related art adopts a hinged cover. In order to achieve airtightness inside the box, an annular flange and a matching annular groove are usually provided on the cover and the peripheral side of the box opening respectively. During the process of hinged connection to the cover, the annular flange and the annular groove gradually fit together to achieve airtightness inside the box. However, due to the hinge, the movement between the annular flange and the annular groove is an arc movement with the hinge axis as the rotation axis. There are some contact positions between the annular flange and the annular groove that are not well sealed. For example, during the closing process, the contact between the annular flange and the annular groove near the hinge side will become closer and closer. Finally, after the closing is completed, the contact between the annular flange and the annular groove near the hinge side is extremely tight, while the contact between the annular flange and the annular groove away from the hinge side is relatively loose. In addition, the annular flange and the annular groove are not well sealed. The groove needs to be deep to fit. Therefore, during the relative rotation of the annular flange and the annular groove, the initial contact position of the annular flange and the annular groove in the area between the hinge side and the hinge side is not the final contact position after full fit. Therefore, the edge is constantly squeezed during the closing process, and the deformation and wear are also greater. Unlike the straight up and down method of the cover body and the box body, the edges of the annular flange and the annular groove are all in one-to-one correspondence during the movement, and each part can be in contact and subjected to force more evenly. Therefore, powder leakage will occur after several uses, and the annular flange and the annular groove are often made of harder plastic. In order to improve the sealing performance during design, the tighter the fit between the two is designed, the more difficult it will be to close during use. In other words, the closing resistance is greater and the wear is greater.

[0047] In response to the above problems, the present application discloses a sealing structure and a powder puff box, wherein a sealing member 4 having an elastic periphery 41 is installed on the inner side of the cover plate 2, and the middle part of the sealing member 4 is connected to the middle part of the cover plate 2 via a protrusion. When the cover plate 2 is completely covered on the opening of the box body 1, the sealing member 4 as a whole can be completely covered at the opening position of the box body 1, and the periphery 41 of the sealing member 4 is completely in contact with the peripheral side of the opening of the box body 1. At this time, the closed cover plate 2 provides a pressure toward the inner side of the box body 1 to the sealing member 4, so that the contact position between the periphery 41 of the sealing member 4 and the peripheral side of the opening of the box body 1 is deformed and compressed, thereby achieving sealing of the interior of the box body 1. Compared with the problems in the above-mentioned related technologies, the sealing member 4 of the present application is more convenient to use. As the cover plate 2 rotates to close, the peripheral edge 41 of the seal 4 is gradually "sticked" to the peripheral side of the opening of the box body 1. Finally, a pressure is applied to the middle of the seal 4 through the protrusion in the middle of the box body 1, so that the peripheral edge 41 of the seal 4 is pressed tightly against the peripheral side of the opening of the box body 1. There will be no problem of poor sealing at some contact positions. The force point after closing of the present application is located in the middle of the seal 4, that is, the peripheral edge 41 of the seal 4 is evenly stressed, so the sealing effect at all parts of the peripheral edge 41 is good.

[0048] Figure 1Schematic diagram of the sealing structure in one embodiment of the present application. Figure 1 As shown, the sealing structure includes a box body 1 with a top opening, a cover plate 2 for covering the opening, and a locking assembly 3 for maintaining the cover plate 2 and the box body 1 in a closed state. The connection between the box body 1 and the cover plate 2 is not limited to a hinge, and can also be achieved by plugging, snapping, etc. Since the technical problems of the hinged connection are more prominent, this application mainly uses the hinged connection as an example, but does not specifically limit the connection between the cover plate 2 and the box body 1. The locking assembly 3 can adopt a commonly used snap-fit ​​or buckle structure, and can be installed on the side of the cover plate 2 and the box body 1 away from the hinge to achieve a better locking effect.

[0049] Reference Figure 1 and Figure 2 A sealing member 4 is provided on the inner side of the cover plate 2. The middle part of the sealing member 4 is fixedly connected to the middle part of the cover plate 2 through a protrusion. The protrusion can be a boss. The middle part of the cover plate 2 and the middle part of the sealing member 4 are fixedly connected to the two ends of the boss respectively. In one embodiment, the protrusion includes a first protrusion 51 and a second protrusion 52. The first protrusion 51 is fixedly connected to the cover plate 2, and the second protrusion 52 is fixedly connected to the sealing member 4. The first protrusion 51 and the second protrusion 52 are clamped and fixed. Specifically, the first protrusion 51 and the second protrusion 52 can both be annular clamping members to achieve relative rotation while limiting axial movement.

[0050] The middle part of the seal 4 can be a harder plastic part, and the peripheral edge 41 of the seal 4 is made of an elastic material, such as silicone, silicone rubber, etc., or the entire seal 4 can be made of an elastic material. When the cover 2 covers the opening of the box body 1, the peripheral edge 41 of the seal 4 abuts against the peripheral side of the opening of the box body 1, and the cover 2 applies pressure toward the inside of the box body 1 to the seal 4 through the protrusion. When the cover plate 2 and the box body 1 are connected in a hinged manner, during the process of the cover plate 2 rotating around the hinge axis to cover the opening of the box body 1, the sealing member 4 on the inner side of the cover plate 2 rotates along with the cover plate 2. When the cover plate 2 is about to cover the opening of the box body 1, for example, when there is still an opening angle of 5° to 10° between the cover plate 2 and the box body 1, the peripheral edge 41 of the sealing member 4 on the inner side of the cover plate 2 close to the hinge axis first contacts the peripheral side of the opening of the box body 1 close to the hinge axis. In the subsequent process of rotating until the cover plate 2 completely covers the opening of the box body 1, the peripheral edge 41 of the sealing member 4 on the inner side of the cover plate 2 closes the hinge axis. The side rotation range is smaller, while the peripheral edge 41 of the sealing member 4 of the cover plate 2 away from the hinge rotates more widely. Continue to rotate the cover plate 2 until it completely covers the opening of the box body 1. The cover plate 2 is kept covering the opening of the box body 1 through the locking components 3 such as buckles and hasps. The sealing member 4 as a whole can be completely covered at the opening position of the box body 1, and the peripheral edge 41 of the sealing member 4 is completely in contact with the peripheral side of the opening of the box body 1. At this time, the cover plate 2 in the covering state provides a pressure toward the inside of the box body 1 to the sealing member 4, so that the peripheral edge 41 of the sealing member 4 is deformed and pressed at the contact position with the peripheral side of the opening of the box body 1, thereby achieving sealing of the inside of the box body 1.

[0051] In one embodiment, the surfaces of the peripheral edge 41 of the seal 4 and the peripheral side of the opening of the box body 1 that contact each other are all arranged in the form of arc surfaces. During the closing process of the cover plate 2, the arc surface can transition relatively smoothly during the contact process between the peripheral edge 41 of the seal 4 and the peripheral side of the opening of the box body 1, and the contact surface is larger during deformation, and the sealing is better. Furthermore, the peripheral edge 41 of the seal 4 is recessed toward the side of the interior of the box body 1 away from the interior of the box body 1, so that the longitudinal section of the peripheral edge 41 of the seal 4 is generally arc-shaped. Since the side of the peripheral edge 41 of the seal 4 on the inner side of the cover plate 2 close to the hinge axis first contacts the peripheral side of the opening of the box body 1 close to the hinge axis, the recessed setting can reduce the pressure of the peripheral edge 41 of the seal 4 on the side close to the hinge axis on the peripheral side of the opening of the box body 1, thereby providing a space for making way.

[0052] In another embodiment, an abutment ring 6 is further provided on the inner side of the opening of the box body 1. The abutment ring 6 can be fixedly installed on the inner side of the opening of the box body 1 in a snap-fit ​​manner. When the cover plate 2 covers the opening of the box body 1, the periphery 41 of the seal 4 also abuts against the abutment ring 6. Specifically, an annular area on the periphery 41 of the seal 4 contacts the periphery 41 of the opening of the box body 1, and another annular area on the periphery 41 of the seal 4 contacts the abutment ring 6; further, the abutment ring 6 extends inward to form an abutment protrusion 7. When the cover plate 2 covers the opening of the box body 1, the periphery 41 of the seal 4 also abuts against the upper surface of the abutment ring 6, thereby realizing a supporting effect on the periphery 41 of the soft seal 4.

[0053] Reference Figure 2 and Figure 3 In another embodiment, the above-mentioned sealing member 4 includes a first connecting plate 8 and a second connecting plate 10, which are fixedly connected. The fixed connection between the first connecting plate 8 and the second connecting plate 10 can be achieved by gluing, ultrasonic welding, etc.; wherein, the first connecting plate 8 includes a middle plate 81 and an outer frame 82, and the middle plate 81 and the outer frame 82 are connected by a plurality of spokes 83, and an embedding groove 9 is formed between the plurality of spokes 83, and the protrusion is arranged between the middle plate 81 and the cover plate 2; and the second connecting plate 10 is provided with a receiving groove 11 for the first connecting plate 8 to be embedded, and a plurality of ridges 12 are raised in the receiving groove 11 for being embedded in the plurality of embedding grooves 9 in a one-to-one correspondence. This method allows for independent injection molding of the first and second connecting plates 8, 10. The materials of the first and second connecting plates 8, 10 can be different, for example, the first connecting plate 8 can be made of a harder plastic, while the second connecting plate 10 can be entirely made of a softer material such as silicone. Furthermore, their colors can be customized. For example, if the box body 1 is a round box and the first and second connecting plates 8, 10 are both circular, the spokes 83 and ridges 12 can be set to different colors to achieve a more aesthetically pleasing visual effect. Furthermore, the provision of multiple spokes 83 softens the force exerted by the middle portion of the first connecting plate 8 on the middle portion of the second connecting plate 10.

[0054] This application also provides a powder puff box, refer to Figure 4, including any of the above-mentioned sealing structures, the above-mentioned sealing structure is installed in the powder puff box 13, the powder puff box 13 has an opening, and the open side of the powder puff box 13 is consistent with the open side of the box body 1, the powder puff box 13 is provided with a cover 16 for covering the opening of the powder puff box 13, and the cover 16 can be connected to the powder puff box 13 by means of hinges, snaps, buckles, screw connections, etc.; in one embodiment, the powder puff box 13 and the box body 1 share an inner cavity; the peripheral side of the cover plate 2 extends toward the side away from the box body 1 to form a peripheral wall 14, and a accommodating cavity 15 for accommodating a powder puff is formed between the peripheral wall 14 and the cover plate 2; the side of the peripheral wall 14 away from the cover plate 2 can also be turned outward to form a lace 17, which on the one hand improves the aesthetics, and on the other hand makes it easier for the user to apply force to open the cover plate 2.

[0055] The powder puff box 13 utilizing this sealing structure is placed inside the box body 1, and the powder puff is placed in the accommodating cavity 15. When in use, the cover body 16 is opened to take out the powder puff box 13 on the cover plate 2, and then the box body 1 is opened through the cover plate 2 to take out the powder for use; after use, the cover plate 2 is rotated to completely cover the opening of the box body 1, and the sealing member 4 as a whole can be completely covered at the opening position of the box body 1, and the peripheral edge 41 of the sealing member 4 is completely in contact with the peripheral side of the opening of the box body 1, and at this time, the cover plate 2 in the covered state provides a pressure toward the inside of the box body 1 to the sealing member 4, so that the peripheral edge 41 of the sealing member 4 is deformed and pressed at the contact position with the peripheral side of the opening of the box body 1, thereby achieving sealing of the inside of the box body 1, and the sealing effect of the peripheral edge 41 is good everywhere, which can effectively prevent the powder in the box body 1 from leaking.

[0056] The above specific embodiments do not constitute a limitation on the scope of protection of this application. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. Sealing structure, characterized in that, include: A box body (1) having an opening; a cover plate (2) for covering the opening of the box body (1); a locking assembly (3) for maintaining the cover plate (2) and the box body (1) in a closed state; A sealing member (4), wherein the peripheral edge (41) of the sealing member (4) is made of elastic material, and the middle portion of the sealing member (4) is fixedly connected to the middle portion of the cover plate (2) via a protruding portion; When the cover plate (2) covers the opening of the box body (1), the peripheral edge (41) of the sealing member (4) abuts against the peripheral side of the opening of the box body (1), and the cover plate (2) applies pressure toward the interior of the box body (1) to the sealing member (4) through the protruding portion; The protrusion comprises: a first protruding portion (51), the first protruding portion (51) being fixedly connected to the cover plate (2); a second protruding portion (52), the second protruding portion (52) being fixedly connected to the sealing member (4), the first protruding portion (51) and the second protruding portion (52) being fixedly engaged; The sealing member (4) comprises: a first connecting plate (8), the first connecting plate (8) comprising a middle plate (81) and an outer frame (82), the middle plate (81) and the outer frame (82) being connected via a plurality of spokes (83), a caulking groove (9) being formed between the plurality of spokes (83), and the protrusion being arranged between the middle plate (81) and the cover plate (2); A second connecting plate (10) is fixedly connected to the first connecting plate (8), and the second connecting plate (10) is provided with a receiving groove (11) for the first connecting plate (8) to be embedded, and a plurality of ridge bars (12) protruding from the receiving groove (11) for being embedded in a plurality of the embedding grooves (9) in a one-to-one correspondence.

2. The sealing structure according to claim 1, wherein: The peripheral edge (41) of the sealing member (4) and the surface of the opening peripheral side of the box body (1) in contact with each other are both arranged in the form of arc surfaces.

3. The sealing structure according to claim 1, wherein: The side of the peripheral edge (41) of the sealing member (4) away from the interior of the box body (1) is recessed toward the side of the interior of the box body (1), so that the longitudinal section of the peripheral edge (41) of the sealing member (4) is generally arc-shaped.

4. The sealing structure according to claim 1, wherein: An abutment ring (6) is also provided on the inner side of the opening of the box body (1); when the cover plate (2) covers the opening of the box body (1), the peripheral edge (41) of the sealing member (4) also abuts against the abutment ring (6).

5. The sealing structure according to claim 4, wherein: The abutment ring (6) extends inward to form an abutment ridge (7), and when the cover plate (2) covers the opening of the box body (1), the peripheral edge (41) of the sealing member (4) also abuts against the upper surface of the abutment ridge (7).

6. The sealing structure according to claim 4, wherein: The abutment ring (6) is clamped on the inner side of the opening of the box body (1).

7. Powder puff box, characterized in that, The invention comprises a sealing structure as described in any one of claims 1 to 6, wherein the sealing structure is installed in the powder puff box (13), the powder puff box (13) has an opening, and the opening side of the powder puff box (13) is consistent with the opening side of the box body (1); the peripheral side of the cover plate (2) extends toward a side away from the box body (1) to form a peripheral wall (14), and an accommodating cavity (15) for accommodating a powder puff is formed between the peripheral wall (14) and the cover plate (2); the powder puff box (13) is provided with a cover body (16) for covering the opening of the powder puff box (13).

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