Cosmetic container with replaceable liner

By employing a card slot structure and retaining ring design in the cosmetic container, the inner liner can be detachably connected to the bottle body, solving the problem of the inner liner being irreplaceable and realizing resource recycling and convenient replacement.

CN224522593UActive Publication Date: 2026-07-21SHAOXING BAOTAI PLASTIC-ALUMINUM MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAOXING BAOTAI PLASTIC-ALUMINUM MFG CO LTD
Filing Date
2025-07-18
Publication Date
2026-07-21

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Abstract

This utility model discloses a cosmetic container with a replaceable inner liner, including a bottle body with a slot at the upper end. An inner liner is located inside the bottle body, and a locking block is provided on the outer surface of the inner liner corresponding to the slot. The inner liner is installed inside the bottle body through the locking block and the slot's engagement. A shoulder sleeve is threaded to the upper end of the bottle body, and a pump sleeve is fixedly installed inside the shoulder sleeve. The lower end face of the pump sleeve abuts against and seals the inner liner. This cosmetic container allows for continued use simply by replacing the inner liner when the lotion in the inner liner is used up, eliminating the need for disposal and avoiding resource waste. The inner liner detaches from the slot and is replaced by the locking block, making disassembly convenient; simultaneously, the inner liner is installed onto the bottle body by the locking block and the slot, making installation convenient. The top of the inner liner is bent outwards to form a retaining ring, which limits the inner liner's position, preventing it from falling completely into the bottle body. The retaining ring also acts as a force-bearing structure, facilitating the detachment of the inner liner from the bottle body.
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Description

Technical Field

[0001] This utility model relates to the field of cosmetic bottle technology, and more specifically, to a cosmetic container with a replaceable inner liner. Background Technology

[0002] Existing vacuum bottles have an inner liner installed inside the bottle body, which is tightly attached to the bottle body. The inner liner cannot be replaced, and when the emulsion in the inner liner is used up, it can only be discarded as a whole, resulting in a waste of resources.

[0003] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a cosmetic container with a replaceable inner liner.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cosmetic container with a replaceable inner liner includes a bottle body, a slot at the upper end of the bottle body, an inner liner inside the bottle body, a locking block on the outer surface of the inner liner corresponding to the slot, the inner liner being installed inside the bottle body by the locking block and the slot engaging, a shoulder sleeve being threaded to the upper end of the bottle body, a pump sleeve being fixedly installed inside the shoulder sleeve, and the lower end face of the pump sleeve abutting against the sealed inner liner.

[0007] Furthermore, the top of the inner liner is bent outward to form a retaining ring, the upper surface of which abuts against the lower end face of the pump sleeve, and the lower surface of which abuts against the upper end face of the bottle body.

[0008] Furthermore, a sealing ring is installed on the upper surface of the retaining ring, and the upper surface of the sealing ring abuts against the lower end face of the pump sleeve.

[0009] Furthermore, the inner liner has an annular protrusion at the corresponding position of the retaining block, and an annular groove is formed between the protrusion and the retaining ring.

[0010] Furthermore, the card block has a trapezoidal structure, and the outer surface of the lower part of the card block is an arc surface.

[0011] Furthermore, the card slots are provided in two sets, arranged symmetrically, and the card blocks are provided in two sets, arranged symmetrically.

[0012] Furthermore, a guide groove is provided on the inner wall of the upper end of the bottle body corresponding to the slot position, and the guide groove is located at the edge of the upper end of the bottle body.

[0013] The beneficial effects of this utility model are:

[0014] 1. The cosmetic container of this utility model can be reused simply by replacing the inner liner when the lotion in the inner liner is used up, without the need to discard it, thus avoiding waste of resources.

[0015] 2. In this utility model, the inner liner is separated from the bottle body by a locking block and can be replaced, making disassembly convenient; at the same time, the inner liner is installed on the bottle body by a locking block and a locking slot, making installation convenient.

[0016] 3. In this utility model, the top of the inner liner is bent outward to form a retaining ring. The retaining ring can limit the inner liner and prevent it from falling completely into the bottle body. At the same time, the retaining ring can also serve as a force-bearing carrier, making it easier for the inner liner to detach from the bottle body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a cosmetic container with a replaceable inner liner in this embodiment;

[0018] Figure 2 This is an exploded structural diagram of a cosmetic container with a replaceable inner liner in this embodiment;

[0019] Figure 3 This is a schematic diagram of one structure of the bottle body in this embodiment;

[0020] Figure 4 This is a schematic diagram of one structure of the inner liner in this embodiment;

[0021] Figure 5 for Figure 4 Enlarged view of section A;

[0022] Figure 6 This is a schematic diagram of a connection structure between the bottle body and the inner liner in this embodiment;

[0023] Figure 7 This is a schematic diagram of one structure of the shoulder sleeve in this embodiment;

[0024] Figure 8 This is a schematic diagram of one structure of the pump sleeve in this embodiment;

[0025] Figure 9 This is a schematic diagram of one structure of the inner liner assembly in this embodiment;

[0026] Figure 10 This is a schematic diagram of one structure of the top cover in this embodiment.

[0027] Reference numerals: 1. Bottle body; 2. Slot; 3. Inner liner; 4. Slot; 5. Shoulder sleeve; 6. Pump sleeve; 7. Retaining ring; 8. Sealing ring; 9. Protrusion; 10. Groove; 11. Guide groove; 12. Vacuum pump; 13. First convex ridge; 14. Second convex ridge; 15. Mounting groove; 16. Top cover; 17. Convex ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: A cosmetic container with a replaceable inner liner, such as... Figures 1-8 As shown, the device includes a bottle body 1, which is made of plastic and has an open-top cylindrical structure. A slot 2 is provided at the top of the bottle body 1. An inner liner 3 is provided inside the bottle body 1. The inner liner 3 is also made of plastic and has an open-top cylindrical structure that fits the inner cavity of the bottle body 1. A locking block 4 is provided on the outer surface of the inner liner 3 corresponding to the position of the slot 2. The inner liner 3 is installed inside the bottle body 1 through the locking block 4 and the slot 2. A shoulder sleeve 5 is threaded to the top of the bottle body 1. A pump sleeve 6 for installing a vacuum pump 12 is fixedly installed inside the shoulder sleeve 5. The lower end face of the pump sleeve 6 abuts against the sealed inner liner 3.

[0030] When the lotion in the inner liner 3 is used up, twist the shoulder sleeve 5 to detach it from the bottle body 1; then disengage the locking block 4 from the locking slot 2 to separate the inner liner 3 from the bottle body 1; next, take a new set of inner liners 3 and install the new inner liner 3 into the bottle body 1 using the locking action of the locking block 4 and the locking slot 2; finally, put the shoulder sleeve 5 on the upper end of the bottle body 1 and twist the shoulder sleeve 5 to fix it in place, thus completing the replacement of the inner liner 3.

[0031] Since the pump sleeve 6 is fixedly installed inside the inner cavity of the shoulder sleeve 5, during the disassembly of the shoulder sleeve 5, the pump sleeve 6 is detached from the bottle body 1 along with the shoulder sleeve 5, while during the installation of the shoulder sleeve 5, the pump sleeve 6 is installed on the bottle body 1 along with the shoulder sleeve 5.

[0032] like Figure 7 and Figure 8 As shown, the inner wall of the lower part of the shoulder sleeve 5 is provided with an internal thread, and the outer surface of the upper end of the bottle body 1 is provided with an external thread that matches the internal thread. The shoulder sleeve 5 is installed on the bottle body 1 through the threaded connection between the external thread and the internal thread.

[0033] like Figure 7 and Figure 8 As shown, the inner wall of the upper part of the shoulder sleeve 5 is vertically provided with multiple sets of first protruding ribs 13, and the outer wall of the upper part of the pump sleeve 6 is vertically provided with multiple sets of second protruding ribs 14. An installation groove 15 is formed between two adjacent sets of second protruding ribs 14 for the installation of the first protruding ribs 13. The installation groove 15 is adapted to the first protruding ribs 13. Through the snap-fit ​​cooperation between the first protruding ribs 13 and the installation groove 15, the pump sleeve 6 is fixedly installed in the shoulder sleeve 5.

[0034] Furthermore, such as Figures 4-6As shown, the top of the inner liner 3 is bent outward at a 90° angle to form a retaining ring 7. The retaining ring 7 is coaxially arranged with the inner liner 3. The upper surface of the retaining ring 7 abuts against the lower end face of the pump sleeve 6, and the lower surface of the retaining ring 7 abuts against the upper end face of the bottle body 1. By setting the retaining ring 7, on the one hand, the inner liner 3 can be limited to prevent it from falling completely into the bottle body 1; on the other hand, the retaining ring 7 can serve as a force-bearing carrier, making it easier for the inner liner 3 to detach from the bottle body 1.

[0035] Furthermore, a sealing ring 8 is installed on the upper surface of the retaining ring 7. The sealing ring 8 is coaxially arranged with the retaining ring 7 and is adapted to fit the retaining ring 7. The upper surface of the sealing ring 8 abuts against the lower end face of the pump sleeve 6. By setting the sealing ring 8, the sealing effect of the pump sleeve 6 on the inner liner 3 is improved, and emulsion leakage is prevented.

[0036] Furthermore, such as Figure 3 As shown, there are two sets of slots 2 arranged symmetrically, and correspondingly, there are also two sets of locking blocks 4 arranged symmetrically. Using this structural design, while ensuring a stable connection between the inner liner 3 and the bottle body 1, the limited number of slots 2 and locking blocks 4 allows the inner liner 3 to easily detach from the bottle body 1.

[0037] As a preferred option, such as Figure 5 As shown, the card block 4 has a trapezoidal structure, and the lower outer surface of the card block 4 is curved. The above structural design allows the card block 4 to easily fit into the slot 2; at the same time, by setting the lower outer surface of the card block 4 to be curved, the deformation of the edge of the bottle body 1 corresponding to the position of the card block 4 gradually increases during the process of the card block 4 being inserted into the bottle body 1 and moving into the slot 2, thus avoiding the instantaneous increase in deformation that could cause damage to the edge of the bottle body 1.

[0038] Furthermore, such as Figure 3 As shown, a guide groove 11 is provided on the inner wall of the upper end of the bottle body 1 corresponding to the position of the slot 2. The guide groove 11 is located on the upper edge of the bottle body 1 and above the slot 2. The guide groove 11 serves as a guide, making it easier for the card block 4 to correspond with the slot 2, thereby improving the engagement effect between the card block 4 and the slot 2.

[0039] Furthermore, Figure 7 The inner liner replacement assembly includes the aforementioned inner liner 3 and a top cover 16 for sealing the inner liner 3, as shown below. Figure 4 good, Figure 5 and Figure 8As shown, the inner liner 3 has an annular protrusion 9 corresponding to the position of the retaining block 4. An annular groove 10 is formed between the protrusion 9 and the retaining ring 7. An annular retaining ring that fits into the groove 10 is provided on the inner wall of the top cover 16. The retaining ring and the groove 10 engage to facilitate the installation of the top cover 16 onto the inner liner 3 and to facilitate the separation of the top cover 16 and the inner liner 3, thus facilitating the replacement of the inner liner 3. Preferably, a sealing gasket can be installed on the inner top wall of the top cover 16, abutting against the upper surface of the retaining ring 7 of the inner liner 3 to achieve a seal between the top cover 16 and the inner liner 3. Of course, the sealing method between the top cover 16 and the inner liner 3 is not limited to a sealing gasket; other methods or combinations of methods with a sealing gasket can also be used.

[0040] When replacing the inner liner 3, take out an inner liner replacement component, and then disengage the retaining ring from the groove 10 to separate the new inner liner 3 from the top cap 16; then, place the new inner liner 3 inside the bottle body 1, and use the snap-fit ​​of the retaining block 4 and the retaining groove 2 to fix the new inner liner 3 inside the bottle body 1.

[0041] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cosmetic container with replaceable liner, comprising a bottle body (1), characterized in that, The upper end of the bottle body (1) is provided with a slot (2), and the bottle body (1) is provided with an inner liner (3). The outer surface of the inner liner (3) is provided with a locking block (4) corresponding to the slot (2). The inner liner (3) is installed in the bottle body (1) through the locking block (4) and the slot (2). The upper end of the bottle body (1) is threaded with a shoulder sleeve (5). A pump sleeve (6) is fixedly installed in the shoulder sleeve (5). The lower end face of the pump sleeve (6) abuts against the sealed inner liner (3).

2. The cosmetic container with a replaceable inner liner according to claim 1, characterized in that, The top of the inner liner (3) is bent outward to form a retaining ring (7). The upper surface of the retaining ring (7) abuts against the lower end face of the pump sleeve (6), and the lower surface of the retaining ring (7) abuts against the upper end face of the bottle body (1).

3. A cosmetic container with a replaceable inner liner according to claim 2, characterized in that, A sealing ring (8) is installed on the upper surface of the retaining ring (7), and the upper surface of the sealing ring (8) abuts against the lower end face of the pump sleeve (6).

4. A cosmetic container with a replaceable inner liner according to claim 2, characterized in that, The inner liner (3) has an annular protrusion (9) at the position corresponding to the locking block (4), and an annular groove (10) is formed between the protrusion (9) and the retaining ring (7).

5. A cosmetic container with a replaceable inner liner according to claim 1, characterized in that, The card block (4) has a trapezoidal structure, and the outer surface of the lower part of the card block (4) is an arc surface.

6. A cosmetic container with a replaceable inner liner according to claim 1, characterized in that, The card slots (2) are provided in two sets, arranged symmetrically, and the card blocks (4) are provided in two sets, arranged symmetrically.

7. A cosmetic container with a replaceable inner liner according to claim 1, characterized in that, A guide groove (11) is provided on the inner wall of the upper end of the bottle body (1) corresponding to the slot (2), and the guide groove (11) is located on the edge of the upper end of the bottle body (1).