Airtight loose powder box structure with a built-in powder puff

Abstract

The application discloses airtight loose powder box structure with powder puff, which comprises a base, an upper cover, an inner cup and a powder puff. The powder puff is arranged in the inner cup, the inner cup is arranged in the base, the upper cover is arranged on the opening of the base, the upper cover can close and open the opening of the base, a thread capable of being screwed with each other is arranged between the upper cover and the opening of the base, namely, the upper cover can close and open the opening of the base by the thread, an inner cover is arranged, the inner cover can close and open the opening of the inner cup, the inner cover is arranged below the upper cover, the inner cover can be freely moved relative to the upper cover in the axial direction, the inner cover can be freely rotated relative to the upper cover in the circumferential direction, a sealing ring (a soft rubber layer) is arranged on the lower surface of the inner cover, the sealing ring can abut against the inner side surface of the inner cup, the powder puff is arranged in the sealing ring, and basically no sliding exists between the sealing ring and the inner side surface of the inner cup during use. Thus, the sealing ring will not be damaged after long-term use, the sealing effect of the application can be kept effective at all times, the cosmetic will not be hardened and deteriorated, and the application is convenient to carry and use.

Description

Technical Field

[0001] This invention relates to a cosmetic box, and more particularly to an airtight powder box structure with a built-in powder puff. Background Technology

[0002] Cosmetics are usually stored in portable cosmetic cases. Traditional powder cases mostly have the following structure: they include a case body and a lid. The case body has a cavity for holding cosmetics, and the lid is connected to the case body and can be opened and closed. When the user wants to use the cosmetics, they only need to open the lid.

[0003] While traditional powder compacts are simple in structure and easy to use, they suffer from poor sealing. Since cosmetics contain volatile solvents, when the compact is not properly sealed, these solvents will gradually evaporate into the atmosphere, causing the cosmetics to harden, deteriorate, and be wasted. Furthermore, the direct application of loose powder can lead to uneven application and dust entering the air, resulting in uneven makeup application and further waste. Summary of the Invention

[0004] To overcome the above-mentioned defects, the present invention provides an airtight powder box structure with a built-in powder puff. This airtight powder box structure with a built-in powder puff has good sealing performance and can maintain its sealing performance for a long time, so that the cosmetics will not harden or deteriorate, and it is also convenient to carry and use.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: an airtight powder box structure with a built-in powder puff, including a base, a top cover, an inner cup, and a powder puff. The powder puff is placed in the inner cup, which is placed in the base. The top cover covers the opening of the base and can close and open the opening. A thread is provided between the top cover and the opening of the base, allowing them to be screwed together. For example, the top cover has an internal thread, and the opening of the base has an external thread, thus enabling the top cover to close and open the opening of the base. An inner cover is also provided, which can close and open the opening of the inner cup. The inner cover is positioned below the top cover (positioning means that the inner cover will not detach from the top cover). The inner cover can move freely relative to the top cover in the axial direction and can rotate freely relative to the top cover in the circumferential direction. A [further details about the inner cover are missing from the original text]. There is a sealing ring (made of soft rubber) that can contact the inner side of the inner cup. The powder puff is located inside the sealing ring. When the top cover is tightened and the base opening is tightened, the top cover will move down at the same time, and the inner cover will rotate and move down together. When the sealing ring contacts the inner side of the inner cup, the friction between the sealing ring and the inner side of the inner cup prevents the inner cover from rotating with the top cover. The top cover is tightened further and moved down, while the inner cover moves down along its axis. The sealing ring can further press the inner side of the inner cup, thus achieving a good fit and seal. This results in excellent sealing performance, and the sealing ring will not rotate during the pressing process, meaning there is virtually no slippage between the sealing ring and the inner side of the inner cup. This ensures that the sealing ring will not break even with long-term use, and the sealing effect can always remain effective.

[0006] A further technical solution of the present invention is as follows: the structure in which the inner cover can move freely relative to the upper cover in the axial direction and can rotate freely relative to the upper cover in the circumferential direction is as follows: a groove is provided on the inner side of the upper cover and a protrusion is provided on the outer side of the inner cover. The protrusion is movably positioned in the groove (the outer diameter of the protrusion is slightly larger than the inner diameter of the groove, so that the inner cover is positioned on the upper cover and will not detach). In the axial direction of the inner cover, the height of the groove is greater than the height of the protrusion. In this way, the inner cover can move freely relative to the upper cover in the axial direction and can rotate freely in the circumferential direction.

[0007] A further technical solution of the present invention is: the groove opening is funnel-shaped, the upper side of the protrusion is inclined, which facilitates assembly, and the lower side of the protrusion is horizontal, so as not to fall out of the groove.

[0008] A further technical solution of the present invention is: in the axial direction of the inner cover, the cross section of the sealing ring is U-shaped, a shoulder is formed inside the opening of the inner cup, the bottom surface of the U-shaped sealing ring can abut against the shoulder of the inner cup, and the powder puff is located in the inner cup inside the shoulder.

[0009] A further technical solution of the present invention is: a downward-facing locking groove is provided around the periphery of the inner cup, and the locking groove is fitted onto the periphery of the base opening, so that the inner cup can be detachably locked onto the base opening.

[0010] The beneficial effects of this invention are as follows: Because the upper cover and the base opening are provided with interlocking threads, the upper cover can close and open the base opening, and the inner cover can close and open the inner cup opening. The inner cover is positioned below the upper cover, and can move freely relative to the upper cover in the axial direction and rotate freely relative to the upper cover in the circumferential direction. A sealing ring is provided under the inner cover, which abuts against the inner side of the inner cup. The powder puff is located within the sealing ring. Thus, when the upper cover begins to tighten the base opening, the upper cover simultaneously moves downwards, and the inner cover moves downwards along with it. As the upper cover rotates and moves downwards, the sealing ring contacts the inner surface of the inner cup. Due to the friction between the sealing ring and the inner surface of the inner cup, the inner cover cannot rotate with the upper cover. The upper cover is then tightened further and moved downwards, while the inner cover moves downwards along its axis. The sealing ring can then further press against the inner surface of the inner cup, resulting in a very good seal. This provides excellent sealing performance, and the sealing ring does not rotate during the downward pressure process, meaning there is virtually no slippage between the sealing ring and the inner surface of the inner cup. Therefore, the sealing ring will not break even with long-term use, and the sealing effect remains effective. Thus, this invention provides excellent sealing performance and can maintain a long-term effective seal, preventing cosmetics from hardening or deteriorating. It is also convenient to carry and use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the top cover of the present invention being loosened (there is a distance between the sealing ring and the shoulder of the inner side of the inner cup).

[0012] Figure 2 This is a schematic diagram of the top cover being screwed on when the invention is tightened (the sealing ring presses against the shoulder of the inner side of the inner cup).

[0013] Figure 3 This is a schematic diagram of the inner cup described in this invention;

[0014] Figure 4 This is a schematic diagram of the inner cover described in this invention;

[0015] Figure 5 This is a schematic diagram of the base described in this invention;

[0016] The above Figures 1 to 5 All are axial sectional views Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that, for ease of description, this example uses spatial relative terms such as "above" and "below" to describe the spatial positional relationship between a device or feature as shown in the figure and other devices or features. It should be understood that if the device or feature is positioned in a different manner (rotated 90 degrees or 180 degrees or in other orientations), the spatial relative description used should be interpreted accordingly, and all such interpretations fall within the scope of this invention.

[0019] Example: An airtight powder box structure with a built-in powder puff includes a base 1, a top cover 2, an inner cup 3, and a powder puff 4. The powder puff is placed in the inner cup, which is placed in the base. The top cover covers the opening of the base and can close and open the base opening. Both the base and the top cover are circular. There are threads between the top cover and the base opening that allow them to screw into each other. For example, the top cover has an internal thread, and the base opening has an external thread, so that the top cover can close and open the base opening. There is also a circular inner cover 5, which can close and open the inner cup opening. The inner cover is positioned below the top cover (positioning means that the inner cover will not detach from the top cover). The inner cover can move freely relative to the top cover in the axial direction and can rotate freely relative to the top cover in the circumferential direction. The bottom of the inner cover is provided with... There is a sealing ring 6 (a soft rubber layer) that can contact the inner side of the inner cup. The powder puff is located inside the sealing ring. When the top cover is tightened and the base opening is tightened, the top cover will move down at the same time, and the inner cover will rotate and move down together. When the sealing ring contacts the inner side of the inner cup, due to the friction between the sealing ring and the inner side of the inner cup, the inner cover cannot rotate with the top cover. The top cover is tightened further and moved down, and the inner cover moves down along its axis. The sealing ring can further press the inner side of the inner cup, thus achieving a good fit and seal with the inner cup. This results in excellent sealing performance, and the sealing ring will not rotate during the pressing process, meaning there is basically no slippage between the sealing ring and the inner side of the inner cup. Therefore, the sealing ring will not break after long-term use, and the sealing effect can always remain effective.

[0020] The structure that allows the inner cover to move freely relative to the upper cover in the axial direction and to rotate freely relative to the upper cover in the circumferential direction is as follows: the upper cover 2 has a groove on its inner side and the inner cover 5 has a protrusion 51 on its outer side. The protrusion is movably positioned in the groove (the outer diameter of the protrusion is slightly larger than the inner diameter of the groove, so that the inner cover is positioned relative to the upper cover and will not detach). In the axial direction of the inner cover, the height of the groove is greater than the height of the protrusion. In this way, the inner cover can move freely relative to the upper cover in the axial direction and can rotate freely in the circumferential direction.

[0021] The groove opening is funnel-shaped, and the upper side of the protrusion is beveled, which facilitates assembly. The lower side of the protrusion is horizontal, so as not to come out of the groove.

[0022] In the axial direction of the inner cover, the cross-section of the sealing ring is U-shaped, and a shoulder 31 is formed inside the opening of the inner cup. The bottom surface of the U-shaped sealing ring can abut against the shoulder of the inner cup, and the powder puff is located in the inner cup inside the shoulder.

[0023] The inner cup has a downward-facing locking groove 32 around its periphery. The locking groove is fitted onto the periphery of the base opening, so that the inner cup can be detachably locked onto the base opening.

Claims

1. A structure for an airtight powder box with a built-in powder puff, comprising a base (1), a top cover (2), an inner cup (3), and a powder puff (4), wherein the powder puff (4) is disposed in the inner cup (3), the inner cup (3) is placed in the base (1), and the top cover (2) covers the opening of the base (1), wherein the top cover (2) is capable of closing and opening the opening of the base (1), characterized in that: The upper cover (2) and the base (1) are provided with a thread that can be screwed together, and an inner cover (5) is provided. The inner cover (5) can close and open the opening of the inner cup (3). The inner cover (5) is positioned below the upper cover (2). The inner cover (5) can move freely relative to the upper cover (2) in the axial direction and can rotate freely relative to the upper cover (2) in the circumferential direction. A sealing ring (6) is provided under the inner cover (5). The sealing ring (6) can abut against the inner side of the inner cup (3). The powder puff (4) is located inside the sealing ring (6). The sealing ring (6) is a soft rubber layer. The structure in which the inner cover (5) can move freely relative to the upper cover (2) in the axial direction and can rotate freely relative to the upper cover (2) in the circumferential direction is as follows: the upper cover (2) has a groove on its inner side and the inner cover (5) has a protrusion (51) on its outer side. The protrusion (51) is movably positioned in the groove. In the axial direction of the inner cover (5), the height of the groove is greater than the height of the protrusion (51). The groove opening is funnel-shaped, the upper side of the protrusion (51) is inclined, and the lower side of the protrusion (51) is horizontal.

2. The airtight powder box structure with built-in powder puff as described in claim 1, characterized in that: in In the axial direction of the inner cover (5), the cross section of the sealing ring (6) is U-shaped, and a shoulder (31) is formed inside the opening of the inner cup (3). The bottom surface of the U-shaped sealing ring (6) can abut against the shoulder of the inner cup (3), and the powder puff (4) is located in the inner cup (3) inside the shoulder.

3. The airtight powder box structure with built-in powder puff as described in claim 2, characterized in that: The inner cup (3) has a downward-facing locking groove (32) around its periphery, which is fitted onto the periphery of the opening of the base (1).

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