Inner plug and cosmetic container comprising same

Abstract

The present application relates to an inner plug and a cosmetic container comprising same. The inner plug is mounted at a bottle opening of a bottle body; the inner plug comprises a plug body; a wiping lip is arranged on the inner side wall of the plug body; grooves are formed in the outer side wall of the plug body; air discharge channels are formed at the bottoms of the grooves; opening areas of the air discharge channels are located at the bottoms of the grooves; by means of the grooves, the air discharge channels are communicated with an inner side space of the wiping lip and an outer side space of the wiping lip; the inner side space of the wiping lip refers to the space in the bottle body that uses the wiping lip as a boundary and is away from the bottle opening; and the outer side space of the wiping lip refers to the space in the bottle body that uses the wiping lip as a boundary and is close to the bottle opening. According to the present application, the air discharge channels are provided on the inner plug, and by means of the air discharge channels, air in the inner side space of the wiping lip is discharged in a timely manner, so that the cosmetic material in the bottle body is prevented from splashing out due to a sudden change of air pressure, thereby avoiding contamination and material waste.

Description

Inner plug and cosmetic container containing the same Technical Field

[0001] The present application relates to cosmetic packaging technology, and in particular to an inner plug and a cosmetic container comprising the inner plug. Background Art

[0002] Currently, cosmetic containers often have an inner plug at the mouth of the container. When the applicator is removed from the container, the inner plug scrapes the applicator to prevent excessive material from being loaded onto the applicator. The inner plug typically fits tightly with the applicator to achieve a good scraping effect, and the inner plug is typically sealed against the container's mouth to prevent liquid from leaking out of the mouth. However, due to the tight sealing properties of the inner plug, when the applicator is inserted and then removed from the container, the cosmetic material inside the container can easily splash out due to sudden changes in air pressure, causing contamination and material waste.

[0003] Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present application provides an inner plug, which is provided with an exhaust channel, and the exhaust channel is used to discharge the air in the bottle body in time, thereby avoiding the cosmetic materials in the bottle body from splashing out due to sudden changes in air pressure, causing pollution and material waste.

[0005] The technical solution adopted by this application to solve its technical problems is:

[0006] A kind of inner plug is installed at the bottle mouth of a bottle body, the inner plug includes a plug body, a scraper lip is provided on the inner wall of the plug body, a groove is provided on the outer wall of the plug body, an exhaust channel is provided at the bottom of the groove, the opening area of ​​the exhaust channel is located at the bottom of the groove, and the exhaust channel is connected to the inner space of the scraper lip and the outer space of the scraper lip through the groove. The inner space of the scraper lip refers to the space in the bottle body with the scraper lip as the dividing line and away from the bottle mouth, and the outer space of the scraper lip refers to the space in the bottle body with the scraper lip as the dividing line and close to the bottle mouth.

[0007] Optionally, the exhaust passage is a one-way valve, and the flow direction of the exhaust passage is from the inner space of the scraper lip to the outer space of the scraper lip.

[0008] Optionally, the exhaust passage includes a cutout, and a shape of the cutout includes at least one of a straight line, a curve, and a spiral.

[0009] Optionally, the exhaust passage includes a through hole, and the shape of the through hole includes at least one of a strip hole, a circular hole and a polygonal hole.

[0010] Optionally, the shape of the groove includes at least one of a bar shape, an arc shape and a spiral shape.

[0011] Optionally, the first end of the groove is located between the first end and the second end of the plug body. After assembly, the second end of the groove is located in the inner space of the scraper lip, and the exhaust channel is located above the scraper lip.

[0012] Optionally, the scraper lip is arranged on the inner side wall between the first end and the second end of the plug body, and the scraper lip is close to the second end of the plug body.

[0013] Optionally, the scraper lip extends radially inward along the inner side wall of the plug body, the first end of the scraper lip is fixedly connected to the inner side wall of the plug body, the second end of the scraper lip is a free end, and the second end of the scraper lip is used for scraping.

[0014] Optionally, the scraper lip is funnel-shaped, the first end of the scraper lip is located above the second end of the scraper lip, and the second end of the scraper lip is gathered to form a scraper hole.

[0015] Optionally, taking any two points on the scraper lip, the thicknesses of the scraper lip at the two points are D1 and D2 respectively, and the difference between D1 and D2 is less than Δ, where Δ is the tolerance.

[0016] Optionally, taking any two points A and B on the scraper lip, if the distance between point A and the second end of the scraper lip is smaller than the distance between point B and the second end of the scraper lip, the thickness of the scraper lip at point A is smaller than the thickness of the scraper lip at point B.

[0017] Optionally, the hardness of the plug body is greater than the hardness of the scraper lip, and the plug body and the scraper lip are an integrally formed injection molded part.

[0018] Optionally, the outer wall of the plug body is provided with N fins, the distance between two adjacent fins is equal, the groove is provided on the plug body between two adjacent fins, the groove is arranged along the axial direction of the plug body, and the groove extends to the second end of the plug body, wherein N≥2, and N is an integer.

[0019] The present application also provides a cosmetic container, comprising an inner plug, an outer cover, a brush rod and a bottle body, wherein the inner plug is installed at the bottle mouth of the bottle body, the first end of the brush rod is fixedly installed in the outer cover, the second end of the brush rod is fixedly connected to the brush head, and the outer cover is detachably mounted on the bottle mouth of the bottle body.

[0020] Optionally, the first end of the plug body extends radially outward to form a circle of convex edge, the outer wall of the plug body is provided with convex ribs and fins, the inner wall of the bottle mouth is provided with a groove matching the convex ribs, the convex edge is fitted to the bottle mouth of the bottle body, and the fins are fitted to the shoulder of the bottle body.

[0021] The beneficial effect of the present application is that a groove is provided on the outer wall of the inner plug in the present application, and an exhaust channel is provided at the bottom of the groove, and the exhaust channel is connected to the inner space of the scraper lip and the outer space of the scraper lip. Therefore, when the brush rod breaks through the scraper lip and enters the inner space of the scraper lip, the air in the inner space of the scraper lip can be discharged from the exhaust channel in time, avoiding the increase of air pressure in the inner space of the scraper lip due to the entry of the brush rod and the brush head, and then avoiding the phenomenon that the cosmetic material is splashed due to the sudden change of air pressure in the inner space of the scraper lip at the moment when the brush head is separated from the scraper lip. Therefore, the present inner plug has good safety performance and high cleanliness when in use, and will not cause waste of cosmetic materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of the structure of the inner plug in this application;

[0023] FIG2 is a second schematic diagram of the structure of the inner plug in this application;

[0024] FIG3 is a third structural diagram of the inner plug in this application;

[0025] FIG4 is a fourth structural diagram of the inner plug in this application;

[0026] FIG5 is a cross-sectional view along AA in FIG4 ;

[0027] FIG6 is a cross-sectional view taken along line BB in FIG4 ;

[0028] FIG7 is a cross-sectional view taken along CC in FIG4 ;

[0029] FIG8 is a schematic structural diagram of a cosmetic container in this application;

[0030] FIG9 is an enlarged view of point D in FIG8 ;

[0031] FIG10 is an exploded view of the cosmetic container of the present application;

[0032] In the figure: 10-plug body, 11-groove, 12-exhaust channel, 13-fin, 14-convex edge, 15-convex rib, 20-scraper lip, 30-outer cover, 31-inner thread, 40-brush rod, 41-brush head, 50-bottle body, 51-bottle mouth, 52-slot, 53-external thread, 61-inner space, 62-outer space. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described in this application are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of this 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 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 variations thereof 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 clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0036] Embodiment: As shown in Figure 1-10, an inner plug is installed at the bottle mouth 51 of the bottle body 50. The inner plug includes a plug body 10. A scraper lip 20 is provided on the inner wall of the plug body 10, and a groove 11 is provided on the outer wall of the plug body 10. An exhaust channel 12 is provided at the bottom of the groove 11. The opening area of ​​the exhaust channel 12 is located at the bottom of the groove 11, that is, part of the bottom area of ​​the groove 11 is opened as an exhaust channel, thereby ensuring that the strength of the inner plug meets the use requirements and reducing the possibility of material leakage.

[0037] The exhaust channel 12 is connected to the inner space 61 of the scraper lip 20 and the outer space 62 of the scraper lip 20 through the groove 11. The inner space 61 of the scraper lip 20 refers to the space inside the bottle body 50 with the scraper lip 20 as the dividing line and away from the bottle mouth 51, and the outer space 62 of the scraper lip 20 refers to the space inside the bottle body 50 with the scraper lip 20 as the dividing line and close to the bottle mouth 51.

[0038] The inner plug disclosed in the present application is made of elastic material. Optionally, the inner plug is made of nitrile rubber NBR. Optionally, the plug body 10 is a tubular structure with openings at both ends. Optionally, the plug body 10 is a cylindrical structure with openings at both ends.

[0039] As shown in Figures 8-10, the inner plug is installed at the bottle mouth 51 of the bottle body 50. The outer wall of the plug body 10, except for the groove, is fitted with the inner wall of the bottle mouth 51. There is a gap between the groove 11 and the bottle mouth 51 for gas to pass through. The bottle body 50 can store cosmetics, makeup or care products, such as mascara, liquid lipstick, lip gloss, nail polish, eye shadow, etc. The user dips the brush head 41 of the brush rod 40 into the cosmetic material in the bottle body 50 to apply makeup. Before the brush rod 40 and the brush head 41 are separated from the cosmetic container, the excess material must be scraped off through the scraping lip 20.

[0040] The exhaust passage 12 is connected to the inner space 61 of the scraper lip 20 and the outer space 62 of the scraper lip 20 through the groove 11. As shown in FIG9 , the inner space 61 of the scraper lip 20 refers to the space within the bottle body 50 with the scraper lip 20 as the dividing line and away from the bottle mouth 51, and the outer space 62 of the scraper lip 20 refers to the space within the bottle body 50 with the scraper lip 20 as the dividing line and close to the bottle mouth 51. During use, when the brush rod 40 is inserted into the bottle, the brush rod 40 and the inner plug divide the bottle body 50 into the inner space 61 of the scraper lip 20 and the outer space 62 of the scraper lip 20. As shown in FIG8 , the space below the scraper lip 20 is the inner space 61 of the scraper lip 20, and the space above the scraper lip 20 is the outer space 62 of the scraper lip 20. The groove 11 and the exhaust passage 12 on the plug body 10 connect the inner space 61 and the outer space 62.

[0041] Due to the presence of the exhaust channel 12 on the plug body 10 in the present application, the inner space 61 of the scraper lip and the outer space 62 of the scraper lip are always in a connected state. Therefore, when the brush rod 40 breaks through the scraper lip 20 and enters the inner space 61 of the scraper lip, the air in the inner space 61 of the scraper lip can be discharged from the exhaust channel 12 in time, avoiding the increase of air pressure in the inner space 61 of the scraper lip due to the entry of the brush rod and the brush head, thereby avoiding the splashing of cosmetic materials due to the sudden change of air pressure in the inner space 61 of the scraper lip at the moment when the brush head is separated from the scraper lip.

[0042] During use of the present application, when the brush rod 40 breaks through the scraper lip 20 and enters the inner space 61 of the scraper lip, the air in the inner space 61 of the scraper lip flows into the groove 11 and is discharged to the outer space 62 of the scraper lip through the exhaust channel 12 in the groove 11, thereby maintaining the pressure balance between the inner space 61 and the outer space 62 of the scraper lip.

[0043] In the present application, a groove 11 is provided on the outer wall of the plug body 10, and the groove 11 is a blind groove, and an exhaust channel 12 is provided at the bottom of the groove 11, so that the air in the inner space 61 of the scraper lip can first flow into the position of the exhaust channel 12 through the groove 11, and then flow into the outer space 62 of the scraper lip through the exhaust channel 12, thereby reducing the opening area of ​​the exhaust channel 12 as much as possible, reducing the risk of material leakage, and at the same time, the scraper lip is provided on the inner wall of the plug body, so that the exhaust function of the plug body can be achieved while ensuring a good scraping effect of the plug body. If the groove is directly provided as a through groove and the scraper lip is provided at the end of the plug body, the through groove area is large, which increases the risk of material flowing out through the through groove, and the strength of the plug body will be greatly reduced, thereby affecting the scraping effect of the brush lip.

[0044] In one possible embodiment, the exhaust passage 12 is a one-way valve, and the air in the exhaust passage 12 flows from the inner space 61 of the scraper lip 20 to the outer space 62 of the scraper lip 20. By configuring the exhaust passage 12 as a one-way valve, the air in the outer space 62 of the scraper lip 20 cannot flow through the exhaust passage 12 into the inner space 61 of the scraper lip. This allows the inner plug to have the same sealing effect as a traditional inner plug while still having an exhaust function.

[0045] Optionally, the exhaust passage 12 includes a cutout. The shape of the cutout is not limited. Optionally, the shape of the cutout includes at least one of a straight line, a curve, and a spiral. The cutout can be a straight line, a curve, a spiral, or a letter or figure composed of multiple line segments. For example, the cutout can be V-shaped, Z-shaped, U-shaped, etc. Optionally, the cutout includes a straight line structure arranged along the axial direction of the plug body 10. The cutout is a slit directly cut into the bottom of the groove 11, similar to the cutout structure on a pacifier. When the brush rod 40 breaks through the scraper lip 20 and enters the inner space 61 of the scraper lip, the pressure in the inner space 61 of the scraper lip increases, which opens the cutout and discharges air through the cutout. When the pressure difference between the inner and outer spaces of the scraper lip disappears, the cutout closes, so that the material in the bottle cannot flow out through the exhaust passage 12.

[0046] In another possible embodiment, the exhaust passage 12 includes a through hole, and the shape of the through hole includes at least one of a strip hole, a circular hole, and a polygonal hole. The area of ​​the through hole can be determined according to actual conditions. To reduce the risk of leakage, the area of ​​the through hole is as small as possible while ensuring the ventilation function. The exhaust passage 12 shown in Figure 3 is a long strip hole. Of course, the exhaust passage 12 can also be a circular hole, a polygonal hole, or other irregular hole. Optionally, the exhaust passage 12 includes a long strip hole arranged along the axial direction of the plug body 10.

[0047] The shape of groove 11 is not limited; it can optionally be in at least one of a strip, an arc, and a spiral. While groove 11 is shown in FIG1 as a strip, groove 11 can also be in an arc, or arranged along the circumference of plug body 10 to form a spiral. The function of groove 11 is to direct gas from the inner space 61 of the scraper lip into the outer space 62 adjacent to the scraper lip. The gas then flows out of the plug body through the exhaust passage 12 formed in groove 11.

[0048] The first end of the groove 11 is located between the first end and the second end of the plug body 10. After assembly, the second end of the groove 11 is located in the inner space 61 of the scraper lip 20, the exhaust channel 12 is located above the scraper lip 20, and the scraper lip 20 is located on the inner wall of the plug body 10. Therefore, the opening of the exhaust channel 12 will not affect the scraping effect of the scraper lip 20. As shown in Figures 1, 5 and 8, after assembly, the plug body 10 is installed at the bottle mouth of the bottle body 50, the upper part of the plug body 10 is attached to the inner wall of the bottle mouth 51 of the bottle body 50, and the lower part of the plug body 10 is located in the bottle body below the shoulder. The second end of the plug body 10 is located in the inner space 61 of the scraper lip, and the second end of the groove 12 also extends to the inner space 61 of the scraper lip, that is, the second end of the groove 11 is connected to the inner space 61 of the scraper lip. In this way, the air in the inner space 61 of the scraper lip can flow along the groove 11 to the exhaust channel 12 and be discharged through the exhaust channel 12, thereby keeping the pressure in the inner space 61 and the outer space 62 of the scraper lip equal.

[0049] As shown in Figures 2 and 5-7, the scraper lip 20 is provided on the inner side wall between the first and second ends of the plug body 10, and the scraper lip 20 is close to the second end of the plug body 10. As shown in Figure 5, the first end of the plug body 10 is the upper end and the second end is the lower end. The scraper lip 20 is located on the inner side wall of the plug body 10, and the distance between the scraper lip 20 and the first end of the plug body 10 is greater than the distance between the scraper lip 20 and the second end of the plug body 10. Therefore, the groove 11 and the exhaust channel 12 provided on the plug body 10 will not affect the scraping effect of the scraper lip.

[0050] The scraper lip 20 extends radially inward along the inner sidewall of the plug body 10. A first end of the scraper lip 20 is fixedly connected to the inner sidewall of the plug body 10, and a second end of the scraper lip 20 is free and used for scraping. The first and second ends of the scraper lip 20 can be located in the same radial direction of the plug body 10, as shown in Figures 3 and 4 , i.e., the scraper lip 20 is arranged perpendicular to the plug body 10.

[0051] Optionally, the scraper lip 20 can be arranged at an angle relative to the plug body 10. The scraper lip 20 is funnel-shaped, with the first end of the scraper lip 20 located above the second end of the scraper lip 20, and the second end of the scraper lip 20 is gathered to form a scraper hole. The scraper lip 20 is arranged at an angle toward the bottom of the plug body 10, and the scraper hole is used to scrape the material when the brush rod and brush head pass through.

[0052] In one possible embodiment, if two arbitrary points on the scraper lip 20 have thicknesses D1 and D2, respectively, the difference between D1 and D2 is less than Δ, where Δ is the tolerance. The specific value of Δ is determined based on the actual conditions, such as the size, material, precision requirements, and application scenario of the inner plug. Optionally, Δ is 0.1% to 5% of the average thickness of the scraper lip 20 to facilitate product molding.

[0053] In another possible embodiment, if any two points A and B are located on the scraper lip 20 and the distance between point A and the second end of the scraper lip 20 is less than the distance between point B and the second end of the scraper lip 20, then the thickness of the scraper lip 20 at point A is less than the thickness of the scraper lip 20 at point B. In other words, the scraper lip 20 is thickest at the first end and thinnest at the second end, thereby improving the scraping effect of the scraper lip.

[0054] Optionally, the plug body 10 has a harder hardness than the scraper lip 20, and the plug body 10 and scraper lip 20 are an integrally molded part. Specifically, the plug body 10 and scraper lip 20 are made of two different materials, with the plug body 10 material having a harder hardness than the scraper lip 20; or the plug body 10 and scraper lip 20 are made of the same material but with different hardnesses. Optionally, the scraper lip 20 is thinner than the plug body 10 and is in the form of a thin sheet.

[0055] As shown in Figures 1-7, the outer wall of the plug body 10 is provided with N fins 13, with the distance between adjacent fins 13 being equal. A groove 11 is provided on the plug body 10 between adjacent fins 13. Grooves 11 are arranged along the axial direction of the plug body 10 and extend to the second end of the plug body 10, where N ≥ 2, and N is an integer. Figure 4 shows four fins 13, with a groove 11 provided between each of two adjacent fins 13. Grooves 11 extend downward along the axial direction of the plug body, and the second ends of the grooves extend directly to the second end of the plug body 10. That is, the first end of the groove 11 is a closed end, and the second end of the groove 11 is an open section, which facilitates the diversion of gas from the inner space 61 of the scraper lip to the outer space 62.

[0056] As shown in Figures 8-10, a cosmetic container includes an inner plug, an outer cap 30, a brush rod 40, and a bottle body 50. The inner plug is mounted on the bottle mouth 51 of the bottle body 50. The first end of the brush rod 40 is fixedly mounted within the outer cap 30, and the second end of the brush rod 40 is fixedly connected to the brush head 41. The outer cap 30 is detachably mounted on the bottle mouth 51 of the bottle body 50. The outer cap 30 and the bottle mouth 51 are detachably connected together by means of screwing, snapping, interference fit, etc. Optionally, as shown in Figure 10, the inner sidewall of the outer cap 30 is provided with an internal thread 31, and the outer sidewall of the bottle mouth 51 is provided with an external thread 53 that matches the internal thread 31. The outer cap 30 and the bottle mouth 51 are screwed together and fixed by the internal thread 31 and the external thread 53.

[0057] As shown in Figures 1 and 3 , the first end of the plug body 10 extends radially outward to form a rim 14. The outer wall of the plug body 10 is provided with a rib 15 and fins 13. As shown in Figure 9 , the inner wall of the bottle mouth 51 is provided with a groove 52 that mates with the rib 15. The rim 14 fits against the bottle mouth 51 of the bottle body 50, and the fins 13 fit against the shoulder of the bottle body 50. The fins 13 are located near the second end of the plug body 10, and the number of fins 13 is an even number. Optionally, the number of fins 13 is 2, 4, 6, or 8. As shown in Figure 9 , the upper surface of the fin 13 fits against the shoulder of the bottle body 50, and the lower surface of the rim 14 on the plug body 10 fits against the bottle mouth 51. In other words, the fins 13 and rim 14 secure the plug body 10 in place, preventing the inner plug from being dislodged when the brush rod 40 is removed from the bottle. The rib 15 on the plug body 10 cooperates with the groove 52 on the bottle body 50. The rib 15 can be a raised bump on the plug body or a full-circle raised ring along the circumference of the inner plug. The raised ring can be one, two, or more circles. The cooperation between the rib 15 and the groove 52 can further improve the bonding strength between the inner plug and the bottle body and also play a role in positioning the inner plug during assembly. Optionally, the groove 11 is located below the rib 15.

[0058] It should be noted that those skilled in the art may make a number of modifications and improvements without departing from the concept of this application, and these modifications and improvements are all within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be based on the appended claims.

Claims

1. An inner plug, mounted on a bottle mouth (51) of a bottle body (50), characterized in that: The inner plug comprises a plug body (10), a scraper lip (20) is provided on the inner side wall of the plug body (10), a groove (11) is provided on the outer side wall of the plug body (10), an exhaust channel (12) is provided at the bottom of the groove (11), an opening area of ​​the exhaust channel (12) is located at the bottom of the groove (11), and the exhaust channel (12) is connected to the inner side space (61) of the scraper lip (20) and the outer side space (62) of the scraper lip (20) through the groove (11), the inner side space (61) of the scraper lip (20) refers to the inner side space of the bottle body (50) with the scraper lip (20) as the boundary line and away from the bottle mouth (51), and the outer side space (62) of the scraper lip (20) refers to the inner side space of the bottle body (50) with the scraper lip (20) as the boundary line and close to the bottle mouth (51).

2. The inner plug according to claim 1, characterized in that: The exhaust passage (12) is a one-way valve, and the flow direction of the exhaust passage (12) is from the inner space (61) of the scraper lip (20) to the outer space (62) of the scraper lip (20).

3. The inner plug according to claim 2, characterized in that: The exhaust passage (12) comprises a cutout, and the shape of the cutout comprises at least one of a straight line shape, a curved line shape and a spiral shape.

4. The inner plug according to claim 1, characterized in that: The exhaust passage (12) comprises a through hole, and the shape of the through hole comprises at least one of a strip hole, a circular hole and a polygonal hole.

5. The inner plug according to claim 1, characterized in that: The shape of the groove (11) includes at least one of a strip shape, an arc shape and a spiral shape.

6. The inner plug according to claim 1, characterized in that: The first end of the groove 11 is located between the first end and the second end of the plug body (10); after assembly, the second end of the groove (11) is located in the inner space (61) of the scraper lip (20), and the exhaust channel (12) is located above the scraper lip (20).

7. The inner plug according to any one of claims 1 to 6, characterized in that: The scraper lip (20) is arranged on the inner side wall between the first end and the second end of the plug body (10), and the scraper lip (20) is close to the second end of the plug body (10).

8. The inner plug according to claim 7, characterized in that: The scraper lip (20) extends radially inward along the inner wall of the plug body (10), the first end of the scraper lip (20) is fixedly connected to the inner wall of the plug body (10), the second end of the scraper lip (20) is a free end, and the second end of the scraper lip (20) is used for scraping.

9. The inner plug according to claim 7, characterized in that: The scraper lip (20) is funnel-shaped, the first end of the scraper lip (20) is located above the second end of the scraper lip (20), and the second end of the scraper lip (20) is gathered to form a scraper hole.

10. The inner plug according to claim 7, characterized in that: Take any two points on the scraper lip (20), the thicknesses of the scraper lip (20) at the two points are D1 and D2 respectively, and the difference between D1 and D2 is less than Δ, where Δ is the tolerance.

11. The inner plug according to claim 7, characterized in that: Take any two points A and B on the scraper lip (20), if the distance between point A and the second end of the scraper lip (20) is smaller than the distance between point B and the second end of the scraper lip (20), then the thickness of the scraper lip (20) at point A is smaller than the thickness of the scraper lip (20) at point B.

12. The inner plug according to claim 7, characterized in that: The hardness of the plug body (10) is greater than the hardness of the scraper lip (20), and the plug body (10) and the scraper lip (20) are integrally formed injection molded parts.

13. The inner plug according to claim 7, characterized in that: The outer wall of the plug body (10) is provided with N fins (13), the distance between two adjacent fins (13) is equal, the plug body (10) is provided with the groove (11) between two adjacent fins (13), the groove (11) is arranged along the axial direction of the plug body (10), and the groove (11) extends to the second end of the plug body (10), wherein N≥2, and N is an integer.

14. A cosmetic container, characterized in that: It comprises the inner plug according to any one of claims 1 to 13, and also comprises an outer cover (30), a brush rod (40) and a bottle body (50), wherein the inner plug is installed at the bottle mouth (51) of the bottle body (50), the first end of the brush rod (40) is fixedly installed in the outer cover (30), the second end of the brush rod (40) is fixedly connected to the brush head (41), and the outer cover (30) is detachably mounted on the bottle mouth (51) of the bottle body (50).

15. The cosmetic container according to claim 14, characterized in that: The first end of the plug body (10) extends radially outward to form a circle of convex edge (14), the outer wall of the plug body (10) is provided with a convex rib (15) and a fin (13), the inner wall of the bottle mouth (51) is provided with a groove (52) matching with the convex rib (15), the convex edge (14) is fitted to the bottle mouth (51) of the bottle body (50), and the fin (13) is fitted to the shoulder of the bottle body (50).

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