Liner assembly

By setting ribs on the pivot of the inner lid and interlocking them with the retaining ring of the inner disc, the problem of difficulty in opening the inner lid of cosmetic containers is solved, allowing the inner lid to be suspended in any position and reducing friction, thus improving ease of use.

WO2026016631A1PCT designated stage Publication Date: 2026-01-22SHYA HSIN PACKAGING INDUSTRY (CHINA) CO LTD
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Patent Information

Application Number
PCT/CN2025/096587
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-16
Filing Date
2025-05-22
Publication Date
2026-01-22

AI Technical Summary

Technical Problem

The existing cosmetic containers have high friction between the inner lid and the inner tray, making it difficult to open the inner lid and inconvenient to use.

Method used

A raised rib is provided on the pivot of the inner cover, which is interference-fitted with the retaining ring of the inner plate, so that the inner cover can be suspended at any position and the friction is reduced.

Benefits of technology

It enables the inner cover to be suspended at any position, while reducing the friction between the inner cover and the inner plate, making it easier to open and close the inner cover and improving ease of use.

✦ Generated by Eureka AI based on patent content.

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    Figure CN2025096587_22012026_PF_FP_ABST
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Abstract

A liner assembly, comprising an inner cover (100) and an inner tray (300). A rotating shaft (110) is fixedly disposed on the inner cover (100). A snap ring (311) is fixedly disposed on the inner tray (300). The snap ring (311) is sleeved on the rotating shaft (110), so as to rotatably connect the inner cover (100) to the inner tray (300), and the inner cover (100) covers the inner tray (300). An outer surface of the rotating shaft (110) protrudes radially outward to form at least two protruding ribs (111), the protruding ribs (111) having an interference fit with the snap ring (311), and at least two protruding ribs (111) among all of the protruding ribs (111) being located in different axial directions of the rotating shaft (110). This implements the function of hovering at any position when the inner cover (100) is opened, and further reduces the friction force between the inner cover (100) and the inner tray (300).
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Description

Inner container assembly TECHNICAL FIELD

[0001] The present application relates to the cosmetic packaging technology, specifically to an inner container assembly for a cosmetic container. BACKGROUND

[0002] With the continuous development of people's living standards, cosmetics have become a necessity of people's life, and the types of cosmetics are various, which can be divided into liquid, emulsion, cream, powder block, stick and the like according to the dosage form. The cream, powder block and other cosmetics can be stored in a box-shaped cosmetic container. The air cushion box-shaped cosmetic container usually comprises a cover, an inner container assembly, an inner bottom and an outer bottom. The inner container assembly comprises an inner cover and an inner disc, and the inner cover is rotatably installed on the inner disc. In order to realize the hovering function of the inner cover, the connection between the inner cover and the inner disc is usually provided with a large friction force. Therefore, the user needs a lot of effort to open the inner cover, and the use is very inconvenient. SUMMARY

[0003] In order to overcome the above-mentioned defects, the present application provides an inner container assembly, which utilizes the interference fit between the protruding ribs and the snap ring to realize the hovering function of the inner cover at any position when the inner cover is opened, and to reduce the friction force between the inner cover and the inner disc, thereby facilitating the opening and closing of the inner cover, and having very strong practicability.

[0004] The technical scheme adopted by the present application to solve the technical problems is as follows:

[0005] An inner container assembly comprises an inner cover and an inner disc, a rotating shaft is fixedly arranged on the inner cover, a snap ring is fixedly arranged on the inner disc, the snap ring is sleeved on the rotating shaft to rotatably connect the inner cover to the inner disc, and the inner cover is covered on the inner disc. The outer surface of the rotating shaft protrudes radially outward to form at least two protruding ribs, the protruding ribs are in interference fit with the snap ring, and at least two of the protruding ribs are at different height positions of the rotating shaft.

[0006] Optionally, different protruding ribs are at different height positions of the rotating shaft.

[0007] Optionally, the orthographic projections of at least two of the protruding ribs on a first plane are at different positions, and the first plane is a plane where the bottom surface of the rotating shaft is located.

[0008] Optionally, different protruding ribs are at different positions on the first plane.

[0009] Optionally, the shape of the rotating shaft comprises a cylindrical structure, and the shape of the protruding ribs comprises a strip-shaped structure.

[0010] Optionally, the length direction of the protruding ribs is along the axial direction of the rotating shaft or / and along the circumferential direction of the rotating shaft.

[0011] Optionally, the length of the convex rib is L, the height of the rotating shaft is H, and the circumference of the rotating shaft is C. When the length direction of the convex rib is along the axial direction of the rotating shaft, L is 0.2 to 0.5 times of H. When the length direction of the convex rib is along the circumferential direction of the rotating shaft, L is 0.2 to 0.5 times of C.

[0012] Optionally, the length directions of the convex ribs are all along the axial direction of the rotating shaft, or the lengths of the convex ribs are all arranged along the circumferential direction of the rotating shaft.

[0013] Optionally, 2-6 convex ribs are arranged on the rotating shaft.

[0014] Optionally, the inner container assembly further comprises an inner ring, the inner ring is mounted on the inner disc, the rotating shaft is fixedly mounted on the inner cover through a support block, the inner disc comprises an outer ring, a middle ring and an inner ring, the outer ring is located outside the inner ring, the middle ring is located between the outer ring and the inner ring, the snap ring is fixedly arranged on the outer sidewall of the outer ring, and the inner ring is fixedly mounted on the middle ring.

[0015] The application has the beneficial effects that: in the application, the convex ribs are arranged on the rotating shaft of the inner cover, the snap ring is arranged on the inner disc, and the convex ribs and the snap ring are in interference fit, so as to realize the function of hovering at any position when the inner cover is opened, thereby solving the technical problem that the friction between the inner cover and the inner disc is large and the inner cover is difficult to open when the entire outer surface of the rotating shaft and the snap ring on the inner disc are in interference fit to realize the hovering function in the prior art. Therefore, in the application, the convex ribs and the snap ring are in interference fit, which not only realizes the function of hovering at any position when the inner cover is opened, but also reduces the friction between the inner cover and the inner disc, facilitates the opening and closing of the inner cover, and has very strong practicability. BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is a structural schematic view of an inner container assembly in Embodiment 1 of the application;

[0017] FIG. 2 is a structural schematic view of an inner cover in Embodiment 1 of the application;

[0018] FIG. 3 is a structural schematic view of the inner cover in Embodiment 1 of the application;

[0019] FIG. 4 is an enlarged view of A in FIG. 3;

[0020] FIG. 5 is a structural schematic view of the inner cover in Embodiment 1 of the application;

[0021] FIG. 6 is a structural schematic view of the inner cover in Embodiment 1 of the application;

[0022] FIG. 7 is a structural schematic view of an inner ring in Embodiment 1 of the application;

[0023] FIG. 8 is a structural schematic view of an inner disc in Embodiment 1 of the application;

[0024] Fig. 9 is a structural schematic diagram of the inner container assembly in Embodiment 2 of the present application;

[0025] Fig. 10 is a structural schematic diagram of the inner cover in Embodiment 2 of the present application;

[0026] Fig. 11 is a structural schematic diagram of the inner cover in Embodiment 2 of the present application;

[0027] Fig. 12 is a structural schematic diagram of the inner cover in Embodiment 2 of the present application;

[0028] In the figures: 100 - inner cover, 110 - rotating shaft, 111 - convex rib, 120 - support block, 130 - soft rubber pad, 200 - inner ring, 300 - inner disc, 310 - outer ring, 311 - snap ring, 320 - middle ring, 330 - inner ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the embodiments of the present application. Obviously, the embodiments described in the present application are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the following drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the objects thus used can be interchanged under appropriate circumstances, 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 "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] For purposes of the description hereinafter, spatially relative terms, such as "above", "below", "up", "down", "between", "within", "left", "right", "rear", "front", "upper", "lower", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", "under", "over", "side", "about", "on", "off", and the like, can be used where appropriate to describe an element's relationship to another element as the different elements are illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc., do not necessarily denote any ordinal, chronological or other sequence unless specified.

[0032] Embodiment 1: As shown in FIGS. 1-8, an inner container assembly includes an inner cover 100 and an inner disc 300, the inner cover 100 is fixed with a rotating shaft 110, the inner disc 300 is fixed with a snap ring 311, the snap ring 311 is sleeved on the rotating shaft 110 to rotatably connect the inner cover 100 to the inner disc 300, and the inner cover 100 covers the inner disc 300. The inner cover 100 and the inner disc 300 are air-tightly combined by a soft rubber pad 130, the soft rubber pad 130 is arranged on a rim at the bottom of the inner cover 100, and the hardness of the soft rubber pad 130 is less than that of the inner cover 100 and the inner disc 300. The inner cover 100 and the inner disc 300 are sealed by the soft rubber pad 130, so that the inner disc 300 achieves an air-tight effect for storing cosmetics that need to be sealed, such as air cushions and some easily oxidized cream and powder block cosmetics. The outer surface of the rotating shaft 110 protrudes radially outward to form at least two ribs 111, the ribs 111 are in interference fit with the snap ring 311, and at least two ribs 111 are at different height positions of the rotating shaft 110.

[0033] As shown in FIG. 4, the axial direction of the rotating shaft 110 is defined as the height direction of the rotating shaft 110, and the height of the rotating shaft 110 in the figure is H. Wherein, "at least two ribs 111 are at different height positions of the rotating shaft 110" means that at least part of the area of the at least two ribs 111 is at different height positions of the rotating shaft 110, that is, there are two cases as follows, the first case is that the at least two different ribs 111 are completely at different height positions of the rotating shaft 110, in this case, the space passed by the at least two different ribs 111 after rotating one circle in the circumferential direction is completely not coincident; the second case is that part of the area of the at least two different ribs 111 is at different height positions of the rotating shaft 110, and the rest of the area is at the same height position of the rotating shaft 110, in this case, the space passed by the at least two different ribs 111 after rotating one circle in the circumferential direction is not completely coincident.

[0034] In the present application, the convex rib 111 on the rotating shaft 110 and the snap ring 311 on the inner disc 300 are in interference fit to achieve the function of hovering at any position when the inner cover 100 is opened, thereby solving the technical problem that the friction between the inner cover 100 and the inner disc 300 is large and the inner cover 100 is difficult to open when the entire outer surface of the rotating shaft 110 and the snap ring 311 on the inner disc 300 are in interference fit to achieve the hovering function in the prior art. Therefore, in the present application, the convex rib 111 and the snap ring 311 are in interference fit, which not only achieves the function of hovering at any position when the inner cover 100 is opened, but also reduces the friction between the inner cover 100 and the inner disc 300, reduces the jerk, facilitates the opening and closing of the inner cover 100, and has very strong practicality.

[0035] As shown in FIG. 1, the inner container assembly further includes an inner ring 200, which is installed on the inner disc 300. The inner ring 200 is a cylindrical structure with open upper and lower ends and a hollow interior. The inner disc 300 is a cylindrical structure with an open upper end, a closed lower end, and a hollow interior, and is used to store cosmetic materials such as air cushions, creams, and powder blocks. As shown in FIGS. 3-4, the rotating shaft 110 is fixedly installed on the inner cover 100 through a support block 120. As shown in FIG. 8, the inner disc 300 includes an outer ring 310, a middle ring 320, and an inner ring 330. The outer ring 310 is located outside the inner ring 330, the middle ring 320 is located between the outer ring 310 and the inner ring 330, the snap ring 311 is fixedly provided on the outer sidewall of the outer ring 310, and the inner ring 200 is fixedly installed on the middle ring 320. As shown in FIG. 1, the longitudinal section of the snap ring 311 is C-shaped. The snap ring 311 is sleeved on the rotating shaft 110, and the inner sidewall of the snap ring 311 is in interference fit with the convex rib 111 to achieve hovering at any position of the inner cover 100, facilitate opening of the inner container assembly, and facilitate users to dip materials.

[0036] As shown in FIGS. 1 and 8, the inner disc 300 is provided with an outer ring 310, a middle ring 320, and an inner ring 330. The inner ring 330 is used to store cosmetic materials. The outer ring 310 is rotatably installed on the inner cover 100 through the snap ring 311. The inner ring 200 is fixedly installed on the middle ring 320 through interference fit or clamping. A mesh cloth can be fixedly provided on the inner ring 200 and covers the inner ring 330. When the inner cover 100 is closed, the bottom of the inner cover 100 is airtightly combined with the outer ring 310 through the soft rubber pad 130 and covers the inner ring 330 to seal the materials in the inner ring 330.

[0037] Alternatively, different convex ribs 111 are at different height positions of the rotating shaft 110. That is, at least part of the area between different convex ribs 111 is at different height positions of the rotating shaft 110. The space passed through by different convex ribs 111 after one revolution in the circumferential direction is completely or not completely coincident.

[0038] There are two cases, the first case is that different convex ribs 111 are completely at different height positions of the rotation shaft 110, in this case, the space passed by different convex ribs 111 after rotating one circle in the circumferential direction is completely not coincident; the second case is that part of the area of different convex ribs 111 is at different height positions of the rotation shaft 110 and the rest of the area is at the same height position of the rotation shaft 110, in this case, the space passed by different convex ribs 111 after rotating one circle in the circumferential direction is not completely coincident. Alternatively, different convex ribs 111 are completely at different height positions of the rotation shaft 110.

[0039] Alternatively, the orthographic projection of at least two convex ribs 111 on the first plane is at different positions, the first plane is the plane where the bottom surface of the rotation shaft 110 is located. As shown in FIG. 4, the bottom surface of the rotation shaft 110 refers to the connection between the lower end of the rotation shaft 110 and the inner cover 100. The orthographic projection of at least two convex ribs 111 on the first plane at different positions means that at least part of the area of at least two convex ribs 111 is at different positions on the first plane, that is, there are two cases, the first case is that the orthographic projection of at least two different convex ribs 111 on the first plane is completely not overlapped; the second case is that the orthographic projection of at least two different convex ribs 111 on the first plane is partially not overlapped and partially overlapped.

[0040] The orthographic projection of different convex ribs 111 on the first plane is at different positions. That is, there are two cases, the first case is that the orthographic projection of two different convex ribs 111 on the first plane is completely not overlapped; the second case is that the orthographic projection of two different convex ribs 111 on the first plane is partially not overlapped and partially overlapped.

[0041] As shown in FIGS. 2 and 3, the shape of the rotation shaft 110 includes a cylindrical structure, and the shape of the convex rib 111 includes a strip structure. The cylindrical structure of the rotation shaft 110 facilitates the rotation of the inner cover 100, and the strip structure of the convex rib 111 means that the length of the convex rib 111 is much greater than the width of the convex rib 111.

[0042] Alternatively, the length direction of the convex rib 111 is along the axial direction of the rotation shaft 110 or / and along the circumferential direction of the rotation shaft 110. That is, the arrangement of the convex rib 111 has the following three cases: the length direction of all convex ribs 111 is along the axial direction of the rotation shaft 110; or the length direction of all convex ribs 111 is along the circumferential direction of the rotation shaft 110; or part of the length direction of the convex rib 111 is along the axial direction of the rotation shaft 110, and the rest of the length direction of the convex rib 111 is along the circumferential direction of the rotation shaft 110.

[0043] As shown in FIG. 4, the length of the convex rib 111 is L, the height of the rotating shaft 110 is H, and the circumference of the rotating shaft 110 is C. In the embodiment 1, as shown in FIG. 4 and FIG. 6, when the length direction of the convex rib 111 is along the axial direction of the rotating shaft 110, L is 0.2 to 0.5 times of H. In the embodiment, the height of the rotating shaft 110 is about three times of the length of the convex rib 111. As shown in FIG. 3-6, the length direction of the convex rib 111 is along the axial direction of the rotating shaft 110. In the embodiment, three convex ribs 111 are arranged on the rotating shaft 110, and the three convex ribs 111 are located at different height positions of the rotating shaft 110, and the orthographic projection of the three convex ribs 111 on the first plane is at different positions.

[0044] In the embodiment 2, as shown in FIG. 10 and FIG. 12, when the length direction of the convex rib 111 is along the circumferential direction of the rotating shaft 110, L is 0.2 to 0.5 times of C. In the embodiment, the circumference of the rotating shaft 110 is about three times of the length of the convex rib 111. As shown in FIG. 9-12, the length of the convex rib 111 is along the circumferential direction of the rotating shaft 110. In the embodiment, three convex ribs 111 are arranged on the rotating shaft 110, and the three convex ribs 111 are located at different height positions of the rotating shaft 110, and the orthographic projection of the three convex ribs 111 on the first plane is at different positions.

[0045] Optionally, 2-6 convex ribs 111 are arranged on the rotating shaft 110. As shown in FIG. 4, FIG. 6 and FIG. 12, three convex ribs 111 are shown in the embodiment 1 and the embodiment 2, and the sum of the lengths of the three convex ribs 111 in the embodiment 1 is equal to the height of the rotating shaft 110, and the sum of the lengths of the three convex ribs 111 in the embodiment 2 is equal to the circumference of the rotating shaft 110, so that the stability of the inner cover 100 during rotation can be improved. Of course, 2, 4, 5 or 6 convex ribs 111 can also be arranged on the rotating shaft 110.

[0046] It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A liner assembly, characterized by: The inner cover (100) is provided with a rotating shaft (110), and the inner disc (300) is provided with a snap ring (311). The snap ring (311) is sleeved on the rotating shaft (110) to rotatably connect the inner cover (100) to the inner disc (300), and the inner cover (100) covers the inner disc (300). The outer surface of the rotating shaft (110) protrudes radially outward to form at least two ribs (111). The ribs (111) are in interference fit with the snap ring (311), and at least two of the ribs (111) are at different height positions of the rotating shaft (110).

2. The liner assembly of claim 1, wherein: Different ribs (111) are at different height positions of the rotating shaft (110).

3. The liner assembly of claim 1, wherein: In the ribs (111), the orthographic projections of at least two of the ribs (111) on a first plane are at different positions, and the first plane is a plane where the bottom surface of the rotating shaft (110) is located.

4. The liner assembly of claim 3, wherein: Different ribs (111) are at different positions on the first plane.

5. The liner assembly of any one of claims 1-4, wherein: The shape of the rotating shaft (110) includes a cylindrical structure, and the shape of the rib (111) includes a strip structure.

6. The liner assembly of claim 5, wherein: The length direction of the rib (111) is along the axial direction of the rotating shaft (110) or / and along the circumferential direction of the rotating shaft (110).

7. The liner assembly of claim 6, wherein: The length of the rib (111) is L, the height of the rotating shaft (110) is H, and the circumference of the rotating shaft (110) is C. When the length direction of the rib (111) is along the axial direction of the rotating shaft (110), L is 0.2 to 0.5 times H; when the length direction of the rib (111) is along the circumferential direction of the rotating shaft (110), L is 0.2 to 0.5 times C.

8. The liner assembly of claim 6, wherein: The length direction of the rib (111) is along the axial direction of the rotating shaft (110); or the length of the rib (111) is along the circumferential direction of the rotating shaft (110).

9. The liner assembly of claim 1, wherein: The rotating shaft (110) is provided with 2-6 ribs (111).

10. The liner assembly of claim 1, wherein: Further comprising an inner ring (200) mounted on the inner disc (300), and the rotating shaft (110) is fixedly installed on the inner cover (100) through a support block (120). The inner disc (300) includes an outer ring (310), a middle ring (320), and an inner ring (330). The outer ring (310) is located outside the inner ring (330), the middle ring (320) is located between the outer ring (310) and the inner ring (330), the snap ring (311) is fixedly provided on the outer sidewall of the outer ring (310), and the inner ring (200) is fixedly installed on the middle ring (320).

Citation Information

Patent Citations

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