Double-layer retractable inner plug structure and cosmetic container

Abstract

The utility model relates to an inner plug structure and a cosmetic container comprising the same. A double-layer retractable inner plug structure comprises a first inner plug and a second inner plug which are matched with each other, the first inner plug is made of hard materials, the second inner plug is made of soft materials, the second inner plug comprises a second inner plug body and a bottom face, the second inner plug is connected with the first inner plug, a scraping opening is formed in the center of the bottom face, and the scraping opening is connected with the first inner plug. The part, close to the scraping opening, of the bottom face is a wrinkled face, and the bottom face can be folded upwards or downwards. The utility model provides the double-layer retractable inner plug structure and the cosmetic container, which can adapt to bottle bodies formed by various processes, can adapt to bristle structures with different sizes and shapes, improves the diversity of products, and is suitable for various bottle bodies and brush head bodies; the technical problems that in the prior art, an inner plug is only suitable for a single bottle body or a brush, the adaptability is poor, and multiple inner plug structures need to be designed, so that the design cost is high, and the number of molds is large are solved.

Description

Technical Field

[0001] The utility model relates to an inner plug structure and a cosmetic container comprising the inner plug structure, in particular to a double-layer shrinkable inner plug structure and the cosmetic container. Background Art

[0002] Nowadays, makeup has become an essential beauty ritual for women. Wearing makeup is not only a way to show respect for one's appearance, but also a way to show respect for others. Cosmetics containers such as mascara, lip gloss, and lip oil often feature an inner stopper. The mainstream inner stopper designs currently on the market often utilize a single material or single-component construction. The choice of inner stopper material varies depending on the bottle type. For injection-molded containers, harder materials are preferred, while for injection-blown or blow-molded bottles, softer materials are preferred. The inner stopper typically features a scraping port. When applying makeup, the user first dips the applicator into the bottle to remove the material, then scrapes off any excess material through the inner stopper before proceeding with the application. Traditional inner stoppers utilize a circular scraping port, requiring the maximum outer diameter of the brush stem and bristles to be strictly controlled within a specified range to ensure scraping functionality. This significantly limits the variety of bristle designs. Summary of the Invention

[0003] The utility model provides a double-layer retractable inner plug structure and a cosmetic container that can adapt to various forming processes and can be adapted to brush structures of different sizes and shapes, thereby improving product diversity and being adaptable to various bottle bodies and brush heads; it solves the technical problem in the prior art that the inner plug is only suitable for a single type of bottle body or brush, has poor adaptability, and requires the design of multiple inner plug structures, resulting in high design costs and a large number of molds.

[0004] The above technical problems of the present invention are solved by the following technical solutions: a double-layer retractable inner plug structure, comprising a first inner plug and a second inner plug that cooperate with each other, the first inner plug being made of a hard material, the second inner plug being made of a soft material, the second inner plug comprising a second inner plug body and a bottom surface, the second plug body being connected to the first inner plug, a scraping opening being provided at the center of the bottom surface, the bottom surface being a pleated surface close to the scraping opening, and the bottom surface being capable of being folded upward or downward. The inner plug is divided into two parts, the first inner plug at the top being made of a relatively hard material, ensuring a close fit with the bottle mouth and good pulling strength; the second inner plug at the bottom being made of a relatively soft material, which not only enhances the stability of the overall structure, but also provides customers with an excellent scraping experience through the excellent resilience of the soft material, and the soft material can also better adapt to deformation at the scraping opening to meet the needs of different brush head structures. The scraper mouth structure with a pleated surface maintains a constant aperture size when the scraper mouth is not in operation through the design of the pleats, and can scrape the material on the brush rod inserted in the scraper mouth. When the bristles are inserted or pulled out, the pleats will expand conformably, and the soft bottom surface will fold up or down according to the movement of the brush head, thereby effectively expanding the scraping area and being compatible with a wider range of bristle sizes.

[0005] Preferably, the first inner plug includes a first inner plug body and a first inner plug connecting section. The outer circumferential surface of the first inner plug connecting section is provided with a stepped surface. The inner wall surface of the second inner plug body is provided with a corresponding stepped surface. The first inner plug connecting section and the inner wall surface of the second inner plug body are connected via the stepped surface. Due to the soft material of the second inner plug, the second inner plug is elastically wrapped around the outer circumferential surface of the first inner plug. At the same time, the stepped surface is provided between the first and second inner plugs to provide a more secure connection between the two.

[0006] Preferably, the upper end of the first inner plug body is provided with an outward-turned stopper and positioning ridge, which is used for positioning to facilitate installation of the first inner plug.

[0007] Preferably, the outer circumferential surface of the first inner plug is provided with an annular protrusion, so as to form an interference fit with the inner wall of the bottle body and ensure the firm connection between the first inner plug and the bottle body.

[0008] Preferably, the wrinkled surface includes 3 to 6 wrinkles, which is suitable for medium-sized bristles and bristles with complex shapes.

[0009] A cosmetic container includes a bottle body and an outer cover. An inner plug structure comprising a first inner plug and a second inner plug is installed in the inner wall of the upper opening of the bottle body. A brush body structure is installed in the center of the inner plug structure. The brush body structure includes a brush rod, and a brush head is installed at the end of the brush rod. The brush rod cooperates with a scraping opening when the bottom surface is in a wrinkled state, and the brush head cooperates with the scraping opening when the bottom surface wrinkles are expanded. When the bottom surface is not in operation, the scraping opening is in a wrinkled state. The brush rod is located in the scraping opening and can scrape the material on the brush rod. When the brush head is in use or pulled out, the bottom surface is in operation, the scraping opening adapts to the size of the brush head, and the wrinkles are expanded. This ensures that the cosmetic container is suitable for any type of brush head structure.

[0010] Preferably, the inner wall of the upper opening of the bottle body is interference fit with the first inner plug, and the convex edge of the first inner plug abuts against the upper opening of the bottle body.

[0011] Preferably, the brush body structure includes a fixing portion integrally formed with the brush rod, the fixing portion is annular, the inner wall of the fixing portion is provided with a threaded connection with the outer circumferential surface of the bottle body, and the outer wall of the fixing portion is connected to the outer cover.

[0012] Therefore, the double-layer retractable inner plug structure and cosmetic container of the present invention have the following advantages: the inner plug is composed of a hard first inner plug at the top and a soft second inner plug at the bottom, which can be adapted to a bottle body formed by any process. At the same time, the soft second inner plug at the bottom can facilitate the formation of a deformable scraping port. The scraping port is designed in a petal-shaped pleat style, breaking through the traditional limitations on bristle size, and can be adapted to bristle structures of various diameters and complex shapes, thereby improving the versatility of the product and enhancing the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of a double-layered retractable inner plug structure.

[0014] Figure 2 yes Figure 1 A perspective view of the first inner plug.

[0015] Figure 3 yes Figure 1 A perspective view of the second inner plug.

[0016] Figure 4 This is a diagram of the plug status when the brush head is inserted.

[0017] Figure 5 This is a diagram of the plug status when the brush head is pulled out.

[0018] Figure 6 It is a cross-sectional view of a cosmetic container. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example 1:

[0021] like Figure 1 As shown, a double-layer shrinkable inner plug structure includes a first inner plug 1 made of polyester rubber material and a second inner plug 2 made of nitrile rubber.

[0022] like Figure 2 As shown, the first inner plug 1 includes an annular first inner plug body 6 and an annular first inner plug connecting section 7. The upper end of the first inner plug body 6 has an outwardly turned annular ridge 4, and an annular protrusion 3 is integrally formed on the outer circumferential surface of the first inner plug body 6. The outer circumferential surface of the first inner plug connecting section 7 is provided with a stepped surface 10 for connecting to the second inner plug 2.

[0023] like Figure 3 As shown, the second inner plug 2 includes an annular second inner plug body 9 and a bottom surface 5. The outer circumferential surface of the second inner plug body 9 is formed with a stepped surface that mates with the stepped surface of the first inner plug connecting section. The combination of the two stepped surfaces 10 provides a more secure fit between the first inner plug 1 and the second inner plug 2. A scraping opening 8 is provided on the bottom surface 5. The bottom surface near the scraping opening is corrugated, with four corrugations formed on the bottom surface.

[0024] like Figure 4 and 5 As shown, in the non-working state, the folds are contracted, and the scraping opening 8 can scrape the material on the brush rod. When the brush head is inserted, the folds are unfolded and the bottom surface 5 is folded downward, and when the brush head is pulled out, the folds are unfolded and the bottom surface 5 is folded upward by the brush head.

[0025] Example 2:

[0026] like Figure 6 As shown, a cosmetic container includes a bottle body 11 and an outer cover 12. An inner plug as in Example 1 is installed at the opening of the upper end of the bottle body 11. The first inner plug 1 is interference fit with the inner wall of the bottle body 11, and the convex edge 4 of the first inner plug abuts against the opening of the upper end of the bottle body 11, so that the inner plug structure is fixed to the bottle body 11. The second inner plug 2 is located between the first inner plug 1 and the inner wall of the bottle body 11, and the second inner plug 2 is fixed below the first inner plug 1. A brush body structure is inserted in the center of the inner plug. The brush body structure includes a fixing portion 14 integrally formed with a brush rod 13, the fixing portion 14 is annular, the inner wall of the fixing portion 14 is provided with a threaded connection with the outer circumferential surface of the bottle body 11, and the outer wall of the fixing portion 14 is connected to the outer cover 12. The fixing portion 14 is integrally formed with the brush rod 13, and a brush head 15 is installed at the end of the brush rod 13.

[0027] When in use, when the brush head is not needed, the brush rod is located in the scraping port 8, the pleats are not unfolded, the aperture of the scraping port matches the brush rod, and the scraping port can scrape the material on the brush rod clean. When the brush head needs to be inserted or removed, the pleats unfold to adapt to the size of the brush head according to the size of the brush head.

[0028] The specific embodiments described herein are merely illustrative of the concepts of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A double-layer retractable inner plug structure, characterized in that: It includes a first inner plug and a second inner plug that cooperate with each other. The first inner plug is made of hard material, and the second inner plug is made of soft material. The second inner plug includes a second inner plug body and a bottom surface. The second inner plug is connected to the first inner plug. A scraping port is provided at the center of the bottom surface. The bottom surface close to the scraping port is a wrinkled surface, and the bottom surface can be folded upward or downward.

2. The double-layer retractable inner plug structure according to claim 1, characterized in that: The first inner plug includes a first inner plug body and a first inner plug connecting section. A stepped surface is provided on the outer circumferential surface of the first inner plug connecting section. The inner wall surface of the second inner plug body is provided with a corresponding stepped surface. The first inner plug connecting section and the inner wall surface of the second inner plug body are connected through the stepped surface.

3. The double-layered retractable inner plug structure according to claim 2, characterized in that: The upper end of the first inner plug body is provided with an outward-turned stopper and positioning convex edge.

4. The double-layered retractable inner plug structure according to claim 1, characterized in that: An annular protrusion is provided on the outer circumferential surface of the first inner plug.

5. The double-layered retractable inner plug structure according to claim 1, characterized in that: The wrinkled surface includes 3 to 6 wrinkles.

6. A cosmetic container with a double-layered collapsible inner plug structure according to any one of claims 1 to 5, comprising a bottle body and an outer cover, characterized in that: An inner plug structure that cooperates with a first inner plug and a second inner plug is installed in the inner wall of the opening at the upper end of the bottle body, and a brush body structure is installed in the center of the inner plug structure. The brush body structure includes a brush rod, and a brush head is installed at the end of the brush rod. The brush rod cooperates with the scraping port in the wrinkled state of the bottom surface, and the brush head cooperates with the scraping port in the unfolded state of the bottom surface wrinkles.

7. The cosmetic container according to claim 6, characterized in that: The inner wall of the upper opening of the bottle body is interference-fitted with the first inner plug, and the convex edge of the first inner plug abuts against the upper opening of the bottle body.

8. The cosmetic container according to claim 6, characterized in that: The brush body structure includes a fixing part integrally formed with the brush rod. The fixing part is annular. The inner wall of the fixing part is provided with a threaded connection with the outer circumferential surface of the bottle body, and the outer wall of the fixing part is connected to the outer cover.

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