Foldable inner plug and applicator comprising same

Abstract

The invention relates to a foldable inner plug and an applicator comprising the same, the inner plug comprises a plug body, a bending part and a scraping part, the first end of the bending part is fixedly connected to the plug body, the second end of the bending part is fixedly connected to the first end of the scraping part, the second end of the scraping part is a free end, and the first end of the bending part is fixedly connected to the first end of the scraping part. A material scraping opening is formed in the second end of the material scraping part, and when the brush head is pulled out of the bottle body and passes through the material scraping part, the material scraping part can be driven by the brush head to be folded towards the plug body along the bending part. The bent part is arranged in the inner plug, and the scraping part can be folded towards the bottle opening side along the bent part, so that the scraping force of the scraping part is moderate, a good scraping effect can be achieved, and meanwhile bristles on the brush head cannot be scraped off.

Description

Technical Field

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

[0002] A scraper is usually provided inside the plug of the cosmetic bottle mouth. When the rod body is taken out of the plug, the scraper can scrape off the cosmetics attached to the brush rod to keep the rod body clean. In order to ensure the scraping effect, the inner side wall of the scraper is tightly matched with the outer side wall of the rod body in the prior art, but this makes the bristles on the head of the brush rod easily brushed off by the scraper, causing the bristles to fall off, thereby affecting the makeup effect. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the present application provides a foldable inner plug, which is provided with a bending portion, and the scraping portion can be folded along the bending portion toward the bottle mouth side, so that the scraping force of the scraping portion is moderate and can achieve a good scraping effect without scraping off the bristles on the brush head.

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

[0005] A foldable inner plug comprises a plug body, a bending portion and a scraper portion, wherein the first end of the bending portion is fixedly connected to the plug body, the second end of the bending portion is fixedly connected to the first end of the scraper portion, the second end of the scraper portion is a free end, and the second end of the scraper portion forms a scraper opening, and when a brush head is pulled out of a bottle body and passes through the scraper portion, the scraper portion can be folded along the bending portion toward the plug body under the drive of the brush head.

[0006] Optionally, the thickness of the bending portion is smaller than the thickness of the scraping portion.

[0007] Optionally, the bent portion protrudes radially outward from the first end of the scraping portion.

[0008] Optionally, the hardness of the bending portion is smaller than the hardness of the scraping portion.

[0009] Optionally, the bending portion is provided with N slots arranged at intervals along the circumferential direction, wherein N≥1 and N is an integer.

[0010] Optionally, the scraper portion is in a cone structure, the diameter of the first end of the scraper portion is greater than the diameter of the second end of the scraper portion, and the second end of the scraper portion is provided with a sawtooth structure.

[0011] Optionally, the cross-section of the side wall of the scraper portion along the axial direction is arc-shaped, inclined or wavy.

[0012] Optionally, when the cross-section of the side wall of the scraper portion along the axial direction is wavy, the scraper portion includes 1 to 6 groups of undulations, and the undulations include at least one of a leading peak structure, a trailing peak structure, a symmetrical peak structure, a sawtooth structure, a V-shaped structure and a U-shaped structure.

[0013] Optionally, at any two points on the scraper portion, the thicknesses of the scraper portion at the two points are D1 and D2 respectively, then the difference between D1 and D2 is less than Δ, where Δ is the tolerance; or, at any two points A and B on the scraper portion, the distance between point A and the first end of the scraper portion is less than the distance between point B and the first end of the scraper portion, then the thickness of the scraper portion at point A is greater than the thickness of the scraper portion at point B.

[0014] The present application also provides an applicator, comprising a foldable 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 a step is provided between the brush rod and the brush head, and the step can carry the scraping part and fold along the bending part toward the plug body.

[0015] The beneficial effects of the present application are as follows: the inner plug in the present application includes a plug body, a bending portion and a scraping portion, the upper end of the bending portion is connected to the plug body, and the lower end of the bending portion is connected to the scraping portion. When the brush head passes through the scraping portion, the brush head moves upward with the scraping portion until the scraping portion is completely turned up along the bending portion, and then the brush head continues to move upward and detaches from the turned-up scraping opening. Since the scraping opening of the scraping portion is attached to the brush rod, the scraping opening can scrape off the material on the brush rod and the excess material in the brush head, and when the brush head is separated from the scraping opening, the scraping opening is in an turned-up state, so the resistance of the scraping opening to the brush head is reduced, making it easier for the brush head to be pulled out of the scraping opening without scraping off the bristles on the brush head, thereby ensuring the makeup effect of the brush head. Therefore, the scraping force of the scraping portion in the inner plug of the present application is moderate, which can achieve a good scraping effect while not scraping off the bristles on the brush head, thereby extending the service life of the brush head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the inner plug in the natural state in Example 1 of the present application;

[0017] Figure 2 This is the second structural schematic diagram of the inner plug in the natural state in Example 1 of the present application;

[0018] Figure 3 This is the third structural diagram of the inner plug in the natural state in Example 1 of the present application;

[0019] Figure 4 This is one of the structural schematic diagrams of the inner plug in the folded state in Example 1 of the present application;

[0020] Figure 5 This is the second structural schematic diagram of the inner plug in the folded state in Example 1 of the present application;

[0021] Figure 6 This is the third structural schematic diagram of the inner plug in the folded state in Example 1 of the present application;

[0022] Figure 7 This is one of the structural schematic diagrams of the inner plug in the natural state in Example 2 of the present application;

[0023] Figure 8 This is the second structural schematic diagram of the inner plug in the natural state in Example 2 of the present application;

[0024] Fig. 9 This is the third structural diagram of the inner plug in the natural state in Example 2 of the present application;

[0025] Fig.10 This is one of the structural schematic diagrams of the inner plug in the folded state in Example 1 of the present application;

[0026] Fig.11 This is the second structural schematic diagram of the inner plug in the folded state in Example 2 of the present application;

[0027] Fig.12 This is the third structural schematic diagram of the inner plug in the folded state in Example 2 of the present application;

[0028] Fig.13 This is one of the structural schematic diagrams of the inner plug in the natural state in Example 3 of the present application;

[0029] Fig.14 This is the second structural schematic diagram of the inner plug in the natural state in Example 3 of the present application;

[0030] Fig.15 This is the third structural diagram of the inner plug in the natural state in Example 3 of the present application;

[0031] Fig.16 This is one of the structural schematic diagrams of Example 3 of the present application when the inner plug is in a folded state;

[0032] Fig.17 This is the second structural schematic diagram of the inner plug in the folded state in Example 3 of the present application;

[0033] Fig.18 This is the third structural diagram of the inner plug in the folded state in Example 3 of the present application;

[0034] Fig.19 This is one of the state diagrams of the inner plug folding process in Example 3 of the present application;

[0035] Fig. 20 This is the second state diagram of the inner plug folding process in Example 3 of the present application;

[0036] Fig.21 This is the third state diagram of the inner plug folding process in Example 3 of the present application;

[0037] Fig. 22 This is the fourth state diagram of the inner plug folding process in Example 3 of the present application;

[0038] Fig.23 This is the fifth state diagram of the inner plug folding process in Example 3 of the present application;

[0039] Fig.24 This is the sixth state diagram of the inner plug folding process in Example 3 of the present application;

[0040] Fig.25 This is the seventh state diagram of the inner plug folding process in Example 3 of the present application;

[0041] Fig.26 This is the eighth state diagram of the inner plug folding process in Example 3 of the present application;

[0042] Fig. 27 This is the ninth state diagram of the inner plug folding process in Example 3 of the present application;

[0043] Fig.28 This is the tenth state diagram of the inner plug folding process in Example 3 of the present application;

[0044] In the figure: 10-plug body, 11-convex edge, 12-hook, 20-bending part, 30-scraping part, 31-serrated structure, 32-scraping mouth, 40-brush rod, 41-brush head, 42-step, 50-bottle body, 51-bottle mouth. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the embodiments described in the present application are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the following drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] Example 1: Figure 1-6 As shown, a foldable inner plug comprises a plug body 10, a bending portion 20 and a scraping portion 30, wherein the first end of the bending portion 20 is fixedly connected to the plug body 10, the second end of the bending portion 20 is fixedly connected to the first end of the scraping portion 30, the second end of the scraping portion 30 is a free end, and the second end of the scraping portion 30 forms a scraping opening 32, when the brush head 41 is pulled out of the bottle body 50 and passes through the scraping portion 30, the scraping portion 30 can be folded along the bending portion 20 toward the plug body 10 under the drive of the brush head 41, that is, the scraping portion 30 is folded upward to present Figure 5 The inner plug disclosed in the present application is made of elastic material. Optionally, the inner plug is made of NBR, i.e., nitrile rubber. Fig.19 As shown, the inner plug is installed at the bottle mouth 51 of the bottle body 50. 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 makeup material in the makeup container through the brush head 41 of the brush rod 40 to apply makeup. Before the brush rod 40 and the brush head 41 are separated from the makeup container, the excess material needs to be scraped off through the scraping port 32. Figure 1 As shown, the inner plug comprises a plug body 10, a bending portion 20 and a scraping portion 30 from top to bottom. Figure 19-28 As shown, when the brush head 41 passes through the scraper portion 30, the brush head moves upward with the scraper portion 30 until the scraper portion 30 is completely turned up along the bending portion 20, and then the brush head continues to move upward and detaches from the turned-up scraper opening 32. Since the scraper opening 32 of the scraper portion 30 is attached to the brush rod 40, the scraper opening can scrape off the material on the brush rod and the excess material in the brush head, and when the brush head is separated from the scraper opening, the scraper opening is in an turned-up state, so the resistance of the scraper opening to the brush head is reduced, making it easy for the brush head to be pulled out of the scraper opening without scraping off the bristles on the brush head, thereby ensuring the makeup effect of the brush head.

[0049] In a first possible implementation, the thickness of the bending portion 20 is smaller than the thickness of the scraper portion 30, that is, the bending portion 20 and the scraper portion 30 are made of the same material, but the thickness of the bending portion 20 is smaller than the thickness of the scraper portion 30, so that the strength of the bending portion is smaller than the strength of the scraper portion. When the scraper portion moves upward with the brush head, it is easy to bend at the bending portion 20, which facilitates the smooth flipping up of the scraper portion 30.

[0050] Alternatively, if Figure 1-3 As shown, the bent portion 20 protrudes radially outward from the first end of the scraper portion 30. The bent portion protrudes from the scraper portion, which reduces the strength of the connection between the bent portion and the scraper portion, and is more conducive to the scraper portion turning up along the bent portion.

[0051] In a second possible implementation, the hardness of the bending portion 20 is less than that of the scraper portion 30, that is, the material of the bending portion is harder than that of the scraper portion, and the scraper portion 30 can also be turned up smoothly. The inner plug can be an integrally formed part, for example, formed by injection molding, injection or thermoforming, and the bending portion 20 and the scraper portion 30 are made of two different materials, and the hardness of the bending portion is less than that of the scraper portion; or the scraper portion and the bending portion are made of the same material but different hardness, so as to achieve the purpose of the hardness of the bending portion 20 being less than that of the scraper portion 30. In this implementation, the thickness of the bending portion 20 can be the same as that of the scraper portion 30, or it can be less than the thickness of the scraper portion 30.

[0052] In a third possible implementation, the bending portion 20 is provided with N slots arranged at intervals along the circumferential direction, wherein N ≥ 1, and N is an integer. That is, one, two or more slots are provided along the circumferential direction of the bending portion, and such a structural design can also achieve the purpose of reducing the strength of the bending portion 20.

[0053] Optionally, the sum of the perimeters of all the slots is 0.15 to 0.4 times the entire perimeter of the bending portion. In this way, the strength requirement of the bending portion and the requirement of the scraping portion turning up can be met.

[0054] like Figure 1-6 As shown, the inner plug is a hollow cylindrical structure. The upper end of the plug body 10 extends radially outward to form a circle of convex edges 11, and the outer peripheral surface of the lower end of the plug body 10 extends radially outward to form a circle of barbs 12. When assembled, the convex edges 11 of the plug body 10 are pressed against the bottle mouth 51 of the bottle body 50, which is convenient for the sealing of the container as a whole. The setting of the barbs 12 is conducive to the close fit between the plug body and the container. In a possible embodiment, two points are randomly selected on the scraper portion 30, and the thickness of the scraper portion 30 at the two points is D1 and D2 respectively. Then, the difference between D1 and D2 is less than Δ, where Δ is the tolerance; the specific data of Δ is determined according to the actual conditions such as the size, material, precision requirements and application scenarios of the inner plug. Optionally, Δ is 0.1% to 5% of the average thickness of the scraper portion 30, which is convenient for the molding of the product. In another possible embodiment, if any two points A and B are selected on the scraper portion 30, and the distance between point A and the first end of the scraper portion 30 is smaller than the distance between point B and the first end of the scraper portion 30, the thickness of the scraper portion 30 at point A is greater than the thickness of the scraper portion 30 at point B. That is, the first end of the scraper portion 30 is thickest, and the second end is thinnest, so that when scraping, the scraper opening 32 of the scraper portion 30 is convenient to turn up first and drive the entire scraper portion to turn up gradually, so that the brush head can be more easily separated from the scraper opening 32.

[0055] Optionally, the scraper portion 30 is in a cone structure, and the so-called cone structure of the scraper portion 30 means that the cross-sectional area of ​​the first end of the scraper portion 30 is larger than the cross-sectional area of ​​the second end. When the cross-sectional area of ​​the scraper portion 30 is circular, the diameter of the first end of the scraper portion 30 is larger than the diameter of the second end of the scraper portion 30, and the second end of the scraper portion 30 is provided with a sawtooth structure 31. That is, the sawtooth structure 31 is provided on the scraper opening 32, which is conducive to improving the scraping effect.

[0056] The cross section of the side wall of the scraper portion 30 along the axial direction is arc-shaped, inclined or wavy. Figure 1-6 As shown, the side wall of the scraper portion 30 is arc-shaped, that is, the scraper portion 30 is a bowl-shaped structure as a whole.

[0057] Example 2: Figure 7-12 As shown, the difference between this embodiment and the first embodiment is that the side wall of the scraping part 30 is an inclined surface, that is, the scraping part is a truncated cone structure as a whole.

[0058] Example 3: Figure 13-18As shown, the difference between this embodiment and embodiment 1 is that the side wall of the scraper portion 30 is a wavy structure, and the scraper portion 30 as a whole is similar to a bellows structure. Of course, the scraper portion may also be a hemispherical structure, an ellipsoidal structure or other irregular shapes. When the cross-section of the side wall of the scraper portion 30 along the axial direction is wavy, the scraper portion 30 includes 1 to 6 groups of undulations, and a group of undulations may include a protrusion, a protrusion and a depression, or a depression. That is, the surface of the scraper portion 30 has a number of protrusions, or a number of depressions, or a number of pairs of protrusions and depressions; the undulations may be regularly distributed or irregularly distributed. The shape and amplitude of the undulations may also be varied. Optionally, the undulations include at least one of a leading peak structure, a trailing peak structure, a symmetrical peak structure, a sawtooth structure, a V-shaped structure and a U-shaped structure. That is, all undulating structures may adopt any one of the above structures, or may adopt two or more of the above structures in combination.

[0059] like Fig.19 As shown, an applicator includes an inner plug, an outer cover, a brush rod 40 and a bottle body 50. 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. The second end of the brush rod 40 is fixedly connected to the brush head 41. A step 42 is provided between the brush rod 40 and the brush head 41. The step 42 can be folded along the bending part 20 toward the plug body 10 with the scraping part 30. The outer cover is not shown in the figure. The step 42 is designed at the connection between the brush rod 40 and the brush head 41. Figure 19-28 FIG. 2 shows the state diagram of the inner plug of Example 3 at ten moments during the upward turning process driven by the brush head. In the figure, the inner plug is installed in the bottle mouth 51 in the bottle body 50, and the brush rod 40 is pushed out from the bottle body 50. When the step 42 reaches the scraper part 30, the step 42 drives the scraper part 30 to move up and gradually turn up. Figure 19-28 It can be seen from the figure that the change process of the scraper portion 30 when it turns up.

[0060] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements are all within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the attached claims.

Claims

1. A foldable inner plug, characterized in that: The invention comprises a plug body (10), a bending portion (20) and a scraping portion (30); the first end of the bending portion (20) is fixedly connected to the plug body (10); the second end of the bending portion (20) is fixedly connected to the first end of the scraping portion (30); the second end of the scraping portion (30) is a free end, and the second end of the scraping portion (30) forms a scraping opening (32); when a brush head (41) is pulled out of a bottle body (50) and passes through the scraping portion (30), the scraping portion (30) can be folded along the bending portion (20) towards the plug body (10) under the drive of the brush head (41).

2. The foldable inner plug according to claim 1, characterized in that: The thickness of the bending portion (20) is smaller than the thickness of the scraping portion (30).

3. The foldable inner plug according to claim 2, characterized in that: The bent portion (20) protrudes radially outward from a first end of the scraping portion (30).

4. The foldable inner plug according to claim 1, characterized in that: The hardness of the bending portion (20) is smaller than the hardness of the scraping portion (30).

5. The foldable inner plug according to claim 1, characterized in that: The bending portion (20) is provided with N slots arranged at intervals along the circumferential direction, wherein N≥1, and N is an integer.

6. The foldable inner plug according to claim 1, characterized in that: The scraper portion (30) is in a cone structure, the diameter of the first end of the scraper portion (30) is larger than the diameter of the second end of the scraper portion (30), and the second end of the scraper portion (30) is provided with a sawtooth structure (31).

7. The foldable inner plug according to claim 6, characterized in that: The cross section of the side wall of the scraper portion (30) along the axial direction is arc-shaped, inclined or wavy.

8. The foldable inner plug according to claim 7, characterized in that: When the cross-section of the side wall of the scraper portion (30) along the axial direction is wavy, the scraper portion (30) includes 1 to 6 groups of wavy undulations, and the wavy undulations include at least one of a leading peak structure, a trailing peak structure, a symmetrical peak structure, a sawtooth structure, a V-shaped structure, and a U-shaped structure.

9. The foldable inner plug according to claim 1, characterized in that: Take any two points on the scraper portion (30), the thicknesses of the scraper portion (30) 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; or take any two points A and B on the scraper portion (30), the distance between point A and the first end of the scraper portion (30) is less than the distance between point B and the first end of the scraper portion (30), and the thickness of the scraper portion (30) at point A is greater than the thickness of the scraper portion (30) at point B.

10. An applicator, characterized in that: It comprises a foldable inner plug, an outer cover, a brush rod (40) and a bottle body (50) as described in any one of claims 1 to 9, 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, the second end of the brush rod (40) is fixedly connected to the brush head (41), and a step (42) is provided between the brush rod (40) and the brush head (41), and the step (42) can be folded along the bending portion (20) toward the plug body (10) with the scraping portion (30).

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