Replacement container
The double-threaded connection method solves the problems of stability and ease of replacement of the inner liner of cosmetic containers, achieving a stable connection and convenient replacement of the inner liner, improving the user experience and reducing resource waste.
Patent Information
- Application Number
- CN202520750945.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-04-18
AI Technical Summary
The fixed structure of the inner liner of traditional cosmetic containers makes it difficult to clean or replace when damaged, and the lack of effective fixation affects the user experience and makes replacement inconvenient.
The inner liner is connected by a double threaded connection. The inner liner is connected to the upper threaded part of the bottle head through the outer ring and the lower threaded part of the inner cap. Combined with the snap-fit connection between the outer cap and the inner cap, the inner liner can be installed securely and replaced easily.
It achieves a stable connection of the inner liner, preventing detachment and leakage, is easy to operate, meets personalized needs, and reduces resource waste.
Smart Images

Figure CN223972973U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of container technology, specifically relating to replacement containers. Background Technology
[0002] In traditional cosmetics and other industries, containers typically use fixed inner liners. When the inner liner is damaged, stains are difficult to clean, or a different material is needed to accommodate different items, users are often helpless and forced to replace the entire container, resulting in resource waste and increased costs. To address these issues, replaceable containers have emerged. Replaceable containers offer advantages such as affordability, environmental friendliness, energy efficiency, hygiene, and the ability to meet individual needs. However, in existing replaceable containers, the inner liner is usually placed directly inside, lacking effective fixation, which can cause the liner to shift within the container, negatively impacting the user experience. Furthermore, replacing the inner liner often requires tools or flipping the container, which is inconvenient and can easily damage the container. Utility Model Content
[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a replacement container, including a bottle body, an outer cap, an inner cap, and an inner liner. The upper end of the bottle body is provided with a bottle head, and the bottle head is provided with an upper threaded part and a lower threaded part from top to bottom. The inner liner is located in the bottle body. The upper end of the inner liner extends out of the bottle head, is folded horizontally, and then folded downward to form an outer ring part. A clamping groove is formed between the outer ring part and the inner liner. The upper threaded part is located in the clamping groove and is threadedly connected to the outer ring part. The inner cap covers the bottle head, and the lower threaded part is located outside the clamping groove and is threadedly connected to the inner cap. The outer cap covers the inner cap and is fastened to the inner cap.
[0004] As a preferred embodiment of the above technical solution, the upper end of the inner liner is provided with a pull pad and a clamping plate, the inner side of the upper end of the inner liner is provided with an annular support platform, the pull pad is placed around the annular support platform, and the clamping plate is sandwiched between the inner liner and the inner cover.
[0005] As a preferred embodiment of the above technical solution, the bottle body has a square cross-section, and the outer cap has a square cross-section.
[0006] As a preferred embodiment of the above technical solution, the inner side of the lower end of the outer cover has several slots, and the lower end of the inner cover is fixedly connected with side plates and locking strips, the locking strips correspond to the slots and are locked into the corresponding slots, and the upper end of the side plates has guide slopes.
[0007] As a preferred embodiment of the above technical solution, the bottle body has a circular cross-section, and the outer cap has a circular cross-section.
[0008] As a preferred embodiment of the above technical solution, the inner side of the lower end of the outer cover has several slots, and the outer side of the lower end of the inner cover has several strips, with the strips corresponding to the slots and engaging in the corresponding slots.
[0009] As a preferred embodiment of the above technical solution, the card strip is provided with a positioning groove in the middle, and the inner side of the lower end of the outer cover has a number of positioning blocks, which correspond to the positioning groove and are inserted into the corresponding positioning groove.
[0010] The beneficial effects of this utility model are as follows: The replacement container of this utility model has an inner liner that is threadedly connected to the upper threaded part of the bottle body and bottle head via an outer ring, and an inner cap that is threadedly connected to the lower threaded part. This double-threaded connection method is stable and reliable, effectively preventing the inner liner from falling off and the contents from leaking. The inner liner can be replaced by rotating it. The replacement container can be designed in a square or round shape, and its appearance can meet different needs, making it suitable for use in cosmetic products such as face creams. Attached Figure Description
[0011] Figure 1 This is a cross-sectional structural diagram of the present invention in Embodiment 1;
[0012] Figure 2 This is a schematic diagram of the structure of the present invention in Embodiment 1;
[0013] Figure 3 This is a schematic diagram of the inner cover structure in Example 1;
[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention in Embodiment 2;
[0015] Figure 5 This is a schematic diagram of the structure of the present invention in Embodiment 2;
[0016] Figure 6 This is a schematic diagram of the outer cover structure in Example 2;
[0017] Figure 7 This is a schematic diagram of the inner cover in Example 2. Detailed Implementation
[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] Example 1
[0022] like Figure 1-3 As shown, the replacement container includes a bottle body 1, an outer cap 2, an inner cap 3, and an inner liner 4. The upper end of the bottle body 1 has a bottle head 5, which has an upper threaded portion 6 and a lower threaded portion 7 arranged sequentially from top to bottom. The inner liner 4 is located within the bottle body 1. The upper end of the inner liner 4 extends beyond the bottle head 5, folds horizontally, and then folds downwards to form an outer ring portion 8. A groove 9 is formed between the outer ring portion 8 and the inner liner 4. The upper threaded portion 6 is located in the groove 9 and is threadedly connected to the outer ring portion 8. The inner cap 3 covers the bottle head 5, and the lower threaded portion 7 is located outside the groove 9 and is threadedly connected to the inner cap 3. The outer cap 2 covers the inner cap 3 and is fastened to it. The inner liner 4 is threadedly connected to the bottle body 1 through the upper threaded portion 6 and the outer ring 8. The cap assembly composed of the outer cap 2 and the inner cap 3 is threadedly connected to the bottle body 1. During sales, multiple inner liners 4 containing the product can be combined and sold as replacement packs simultaneously or sold individually. When the inner liner needs to be replaced, first unscrew the cap assembly, then rotate the inner liner 4 to remove it from the bottle body 1. Insert the new replacement inner liner 4 into the bottle body 1 and thread it onto the bottle body 1. Then replace the cap assembly to replace the inner liner. When the inner liner 4 is used as a replacement, its opening is sealed with aluminum foil. After installing the replacement, tear off the aluminum foil.
[0023] Furthermore, the inner liner 4 is provided with a pull pad 10 and a clamping plate 11 at its upper end, and an annular support platform 12 is provided on the inner side of the upper end of the inner liner 4. The pull pad 10 is placed on the annular support platform 12, and the clamping plate 11 is sandwiched between the inner liner 4 and the inner cover 3. The pull pad 10 and the clamping plate 11 further improve the sealing performance of the container.
[0024] Furthermore, the bottle body 1 has a square cross-section, and the outer cap 2 has a square cross-section.
[0025] Furthermore, the lower inner side of the outer cover 2 has several slots 13, and the lower perimeter of the inner cover 3 is fixedly connected with side plates 14 and locking strips 15, respectively. The locking strips 15 correspond to the slots 13 and are engaged in the corresponding slots 13. The upper end of the side plates 14 has guide slopes 16. The guide slopes 16 guide the outer cover 2 to be fastened onto the inner cover 3. The cooperation between the locking strips 15 and the slots 13 makes the outer cover 2 and the inner cover 3 form a cover assembly.
[0026] Example 2
[0027] like Figure 4-7 As shown, the replacement container includes a bottle body 1, an outer cap 2, an inner cap 3, and an inner liner 4. The upper end of the bottle body 1 has a bottle head 5, which has an upper threaded portion 6 and a lower threaded portion 7 arranged sequentially from top to bottom. The inner liner 4 is located inside the bottle body 1. The upper end of the inner liner 4 extends beyond the bottle head 5, folds horizontally, and then folds downwards to form an outer ring portion 8. A groove 9 is formed between the outer ring portion 8 and the inner liner 4. The upper threaded portion 6 is located in the groove 9 and is threadedly connected to the outer ring portion 8. The inner cap 3 covers the bottle head 5, and the lower threaded portion 7 is located outside the groove 9 and is threadedly connected to the inner cap 3. The outer cap 2 covers the inner cap 3 and is fastened to it. The cap assembly consisting of the outer cap 2 and the inner cap 3 is threadedly connected to the bottle body 1. During sales, multiple inner liners 4 containing the product can be combined and sold together or sold separately. When the inner liner needs to be replaced, first unscrew the cap assembly, then rotate the inner liner 4 to remove it from the bottle body 1. Insert the new replacement inner liner 4 into the bottle body 1 and thread it onto the bottle body 1. Then, put on the cap assembly to replace the inner liner. When the inner liner 4 is used as a replacement, its opening is sealed with aluminum foil. After installing the replacement, tear off the aluminum foil.
[0028] Furthermore, the inner liner 4 is provided with a pull pad 10 and a clamping plate 11 at its upper end, and an annular support platform 12 is provided on the inner side of the upper end of the inner liner 4. The pull pad 10 is placed on the annular support platform 12, and the clamping plate 11 is sandwiched between the inner liner 4 and the inner cover 3. The pull pad 10 and the clamping plate 11 further improve the sealing performance of the container.
[0029] Furthermore, the bottle body 1 has a circular cross-section, and the outer cap 2 has a circular cross-section.
[0030] Furthermore, the lower inner side of the outer cover 2 has several slots 13, and the lower outer side of the inner cover 3 has several strips 15. The strips 15 correspond to the slots 13 and are engaged in the corresponding slots 13. The cooperation between the strips 15 and the slots 13 makes the outer cover 2 and the inner cover 3 form a cover assembly.
[0031] Furthermore, the locking strip 15 has a positioning groove 17 in the middle, and the lower inner side of the outer cover 2 has several positioning blocks 18. The positioning blocks 18 correspond to the positioning grooves 17 and are inserted into the corresponding positioning grooves 17. The cooperation between the positioning blocks 18 and the positioning grooves 17 forms an alignment between the outer cover 2 and the inner cover 3, so that the locking strip 15 can be smoothly inserted into the corresponding slots 13 when the cover assembly is assembled.
[0032] It is worth mentioning that the technical features such as the hand-pulled pad 10 and the clamping plate 11 involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.
[0033] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.
Claims
1. A refill container, characterized in that The bottle includes a bottle body (1), an outer cover (2), an inner cover (3) and an inner container (4), the upper end of the bottle body (1) is provided with a bottle head (5), the bottle head (5) is provided with an upper threaded part (6) and a lower threaded part (7) from top to bottom, the inner container (4) is located in the bottle body (1), the upper end of the inner container (4) is folded horizontally after extending out of the bottle head (5) and then is folded downward to form an outer ring part (8), a clamping groove (9) is formed between the outer ring part (8) and the inner container (4), the upper threaded part (6) is located in the clamping groove (9) and is threadedly connected with the outer ring part (8), the inner cover (3) covers the bottle head (5), the lower threaded part (7) is located outside the clamping groove (9) and is threadedly connected with the inner cover (3), and the outer cover (2) covers the inner cover (3) and is buckled with the inner cover (3).
2. The refill container of claim 1, wherein The upper end of the inner container (4) is provided with a hand-pulling gasket (10) and a pressing piece (11), the inner side of the upper end of the inner container (4) is provided with an annular support table (12), the periphery of the hand-pulling gasket (10) is located on the annular support table (12), and the pressing piece (11) is clamped between the inner container (4) and the inner cover (3).
3. The refill container of claim 2, wherein The cross section of the bottle body (1) is square, and the cross section of the outer cover (2) is square.
4. The refill container of claim 3, wherein The inner side of the lower end of the outer cover (2) is provided with a plurality of clamping grooves (13), the lower end of the inner cover (3) is respectively fixedly connected with a side plate (14) and a clamping strip (15) in periphery, the clamping strip (15) corresponds to the clamping groove (13) and is clamped into the corresponding clamping groove (13), and the upper end of the side plate (14) is provided with a guide inclined surface (16).
5. The refill container of claim 2, wherein the refill container is a cylindrical container having a diameter of 2.5 cm or less. The cross section of the bottle body (1) is circular, and the cross section of the outer cover (2) is circular.
6. The refill container of claim 5, wherein The inner side of the lower end of the outer cover (2) is provided with a plurality of clamping grooves (13), and the outer side of the lower end of the inner cover (3) is provided with a plurality of clamping strips (15), the clamping strip (15) corresponds to the clamping groove (13) and is clamped into the corresponding clamping groove (13).
7. The refill container of claim 6, wherein The middle part of the clamping strip (15) is provided with a positioning groove (17), the inner side of the lower end of the outer cover (2) is provided with a plurality of positioning blocks (18), the positioning block (18) corresponds to the positioning groove (17) and is inserted into the corresponding positioning groove (17).