A pre-filled, replaceable cartridge

Abstract

This utility model discloses a pre-filled, replaceable-coil e-cigarette cartridge, relating to the field of e-cigarette cartridge technology. It includes an e-liquid tank, a silicone ring, e-liquid, an outer tube, a filling plug, sealing silicone, a bracket, a bottom cover, a magnet, an atomizer core cover, outer and inner cotton wrapping, a heating wire, insulating silicone, absorbent cotton, an atomizer core base, electrodes, an air inlet, and an e-liquid path. The pre-filled e-liquid tank and modular atomizer core assembly serve as the core carriers. The tank is pre-filled with e-liquid, forming a bundled structure. The atomizer core assembly is detachably connected to the tank via a magnetic adapter. The assembly interface is sealed with silicone to prevent leakage. An adapter e-liquid path is located at the bottom of the tank. The atomizer core base has a handle and electrodes. The e-liquid guide is composed of multiple layers of cotton for e-liquid conduction. This design achieves the functions of eliminating the need for additional e-liquid purchases, eliminating manual filling, reusing the coil, and providing convenient and efficient coil replacement. It solves the pain points of existing replaceable-coil e-cigarette cartridges requiring self-purchase and filling, and pre-filled cartridges requiring complete disposal. It is suitable for daily smoking cessation and portable atomization use.

Description

Technical Field

[0001] This utility model relates to the field of e-cigarette cartridge technology, and in particular to a pre-filled e-cigarette cartridge with a replaceable core. Background Technology

[0002] In the field of e-cigarette technology, pre-filled replaceable cartridges are the core consumables of e-cigarettes and are widely used in daily smoking cessation, portable atomization, and other scenarios. They are key components for achieving convenient use and stable atomization experience of e-cigarettes. Their structural design directly affects the user experience, cost of use, and ease of operation, and is of great significance for improving the practicality and economy of e-cigarette consumables.

[0003] Many traditional replaceable coil e-liquid cartridges do not use a pre-filled design, and the e-liquid tank and e-liquid are not integrated into a single structure. Users need to purchase e-liquid separately and manually fill it, which is not only cumbersome but also prone to overflow and contamination, significantly reducing the user experience. On the other hand, most existing pre-filled e-liquid cartridges are one-piece structures, and the e-liquid tank and coil must be discarded as a whole after the e-liquid is used up. The coil cannot be reused, resulting in higher user costs and failing to meet the trend of energy conservation and environmental protection.

[0004] Therefore, there is an urgent need to develop a cartridge that combines pre-filled e-liquid and replaceable coils, enabling direct binding of e-liquid and e-liquid tanks and reusable coils. This would avoid the hassle of users having to purchase additional e-liquid and manually refill it, while also reducing usage costs and meeting users' needs for convenient and economical use of e-cigarette consumables. Utility Model Content

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a pre-filled, replaceable cartridge, which solves the problem that some users of traditional replaceable cartridges need to purchase e-liquid separately and manually fill it, which is not only cumbersome but also prone to overflow and contamination, significantly reducing the user experience. Furthermore, most existing pre-filled cartridges are one-piece structures, requiring the cartridge and coil to be discarded as a whole after the e-liquid is used up, making it impossible to reuse the coil. This results in high user costs and fails to meet the technical problem of aligning with the trend of energy conservation and environmental protection.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A pre-filled, replaceable-coil e-liquid cartridge includes an e-liquid tank, a silicone ring, e-liquid, an outer tube, an e-liquid plug, sealing silicone, a bracket, a bottom cover, a magnet, an atomizer coil cover, outer and inner cotton padding, a heating wire, insulating silicone, absorbent cotton, an atomizer coil base, electrodes, an air inlet, and an e-liquid path. The pre-filled e-liquid tank and modular atomizer coil assembly serve as the core functional components. The pre-filled e-liquid in the tank forms a bundled structure, and the atomizer coil assembly is detachably connected to the tank via a magnetic attraction. A sealing silicone seal is provided at the assembly interface. An e-liquid path extends inside the tank, and a silicone ring is fitted inside the cavity opening. The side walls are filled with... The device features an oil filling plug at the oil inlet and an outer tube on the outside. The atomizer core assembly has a bracket fixed to the atomizer core base, with an outer atomizer core cover on the outside. The bracket is fitted with an oil-guiding component consisting of outer cotton, inner cotton, and absorbent cotton. The inner cotton covers the heating wire. The atomizer core base has a handle, air inlet, and electrode. Insulating silicone is placed between the electrode and the atomizer core base. The device uses magnetic connection for quick assembly and disassembly of the atomizer core assembly. The sealed structure prevents e-liquid leakage, and the oil-guiding component is designed for e-liquid conduction. This design addresses the pain points of existing replaceable cartridges requiring self-purchase and self-filling, and pre-filled cartridges requiring complete disposal, improving ease of use and cost-effectiveness.

[0010] Preferred features: The oil tank and outer tube are made of food-grade safe materials. The e-liquid is formulated in accordance with the standards of the e-cigarette industry and contains no harmful impurities. The outer cotton, inner cotton, and oil-absorbing cotton are medical-grade oil-absorbing cotton with excellent biocompatibility, which can avoid e-liquid contamination and meet the safety requirements of long-term use scenarios.

[0011] Preferred design: The magnets are designed as a ring structure and symmetrically distributed on the inner side of the atomizer core base. The magnetic mating surface at the bottom of the oil tank is frosted. This not only improves the stability of the magnetic connection and prevents the atomizer core components from falling off during use, but also ensures coaxiality during assembly through the symmetrical magnetic structure, ensuring precise connection between the oil circuit and the oil guide component, and improving the oil guide stability after core replacement.

[0012] Preferred: The sealing silicone has a stepped structure with an annular sealing groove on its end face, which fits and conforms to the sealing platform at the bottom of the oil tank. Together with the silicone ring at the oil tank cavity opening, it forms a double sealing protection, which can resist the risk of leakage during long-term storage of pre-filled e-liquid and maintain the sealing performance after multiple coil replacements, thus preventing e-liquid overflow and pollution.

[0013] Preferred design: The outer cotton and absorbent cotton in the oil guide are integrated into a single molding design. The absorbent cotton has a tapered oil guide head at the end. The tapered structure can increase the contact area with the oil path and improve the e-liquid adsorption rate. The integrated design reduces the gap between the oil guides, avoids the problem of dry burning of the heating coil caused by the interruption of oil guide after the coil is replaced, and ensures stable atomization effect.

[0014] Preferred design: The handle of the atomizer coil base is designed with an arc-shaped groove structure. The inner side of the groove has an anti-slip texture, which not only adapts to the gripping force of the fingers and facilitates quick separation of the atomizer coil components, but also prevents slippage when changing the coil, thus improving the ease of operation.

[0015] Preferred design: The filling plug and the filling port of the oil tank adopt an interference fit. The end of the filling plug is equipped with an elastic sealing gasket. The interference fit ensures the sealing reliability during pre-filled oil storage. The elastic sealing gasket can be adapted to secondary sealing after filling. It not only meets the single-use requirements of pre-filled oil, but also provides convenience for users to refill e-liquid later, improving the versatility of the product.

[0016] Preferred design: The electrode is made of gold-plated material and protrudes 1-2mm above the bottom surface of the atomizer core base. The gold plating reduces contact resistance and improves conductivity stability. The appropriate protrusion height ensures precise connection with external power supply components. Combined with the ring-shaped isolation structure of insulating silicone, it prevents short circuits between the electrode and the atomizer core base, ensuring safe use.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In this new design, the e-liquid is pre-filled into the tank, forming a bundled structure. Combined with a modularly designed atomizer core assembly, this eliminates the hassle of purchasing e-liquid and manually refilling it, avoiding issues like spillage and contamination. Furthermore, only the atomizer core assembly needs replacement after the e-liquid is depleted. Both the tank and core assembly are reusable until the core becomes burnt, significantly reducing operating costs. This addresses the dual pain points of existing replaceable cartridges, which require manual refilling after purchasing e-liquid and the need to discard pre-filled cartridges after use. The atomizer core assembly is magnetically attached for quick installation and removal, and with a handle and precise connection structure, replacement requires no tools and can be done with one hand, offering a convenient press-to-install and snap-to-remove experience. The dual-sealing structure and the use of wicking and safe materials ensure that the pre-filled e-liquid does not leak during long-term storage, preventing e-liquid contamination and safety hazards. After replacement, the oil path and wicking components precisely connect, ensuring rapid e-liquid immersion and stable atomization, comprehensively improving user convenience, economy, and safety. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a structural diagram of the entire utility model;

[0021] Figure 2 This is a structural diagram of the atomizing core base of this utility model;

[0022] Figure 3 This is a structural diagram of the oil tank of this utility model;

[0023] Figure 4 This is a structural diagram of the outer cotton covering of this utility model;

[0024] Figure 5 This is a structural diagram of the air inlet of this utility model;

[0025] Figure 6 This is a structural diagram of the oil circuit of this utility model.

[0026] Diagram Explanation: 1. Oil tank; 2. Silicone ring; 3. E-liquid; 4. Outer tube; 5. Filling plug; 6. Sealing silicone; 7. Stand; 8. Bottom cap; 9. Magnet; 10. Atomizer coil cover; 12. Outer cotton wrap; 13. Inner cotton wrap; 14. Heating wire; 15. Insulating silicone; 16. Absorbent cotton; 17. Atomizer coil base; 18. Electrode; 19. Air inlet; 20. Oil passage. Detailed Implementation

[0027] This application provides a pre-filled, replaceable cartridge, which effectively solves the problem that some users of traditional replaceable cartridges need to purchase e-liquid separately and manually fill it, which is not only cumbersome but also prone to overflow and contamination, significantly reducing the user experience. Existing pre-filled cartridges are mostly one-piece structures, and the e-liquid tank and cartridge must be discarded as a whole after the e-liquid is used up, making it impossible to reuse the cartridge. This results in high user costs and is also difficult to meet the technical problem of energy-saving and environmentally friendly usage trends.

[0028] like Figures 1-6 As shown, the technical solution in this application aims to effectively address the problem that some users of traditional replaceable cartridges need to purchase e-liquid separately and manually fill it, which is not only cumbersome but also prone to overflow and contamination, significantly reducing the user experience. Furthermore, existing pre-filled cartridges are mostly one-piece structures, requiring the entire cartridge and coil to be discarded after the e-liquid is used up, making it impossible to reuse the coil and resulting in high user costs. This also fails to align with the trend of energy conservation and environmental protection. The overall approach is as follows:

[0029] To address the problems existing in the prior art, this utility model provides a pre-filled, replaceable-coil e-liquid cartridge, including an oil tank 1, a silicone ring 2, e-liquid 3, an outer tube 4, an oil filling plug 5, sealing silicone 6, a bracket 7, a bottom cover 8, a magnet 9, an atomizer core cover 10, outer cotton wrapping 12, inner cotton wrapping 13, a heating wire 14, insulating silicone 15, oil-absorbing cotton 16, an atomizer core base 17, an electrode 18, an air inlet 19, and an oil passage 20. The pre-filled oil tank 1 and the modular atomizer core assembly serve as the core functional carriers. The oil tank 1 is pre-filled with e-liquid 3, forming a bundled structure between the oil tank 1 and the e-liquid 3. The atomizer core assembly is detachably adapted to the oil tank 1. All components work together to achieve the core functions of pre-filling without self-filling, reusable atomizer core, and convenient and efficient coil replacement.

[0030] The oil tank 1 serves as the storage carrier and overall structural benchmark for the pre-filled e-liquid 3. It has an internally formed cavity and is pre-filled with e-liquid 3, directly binding the e-liquid 3 to the oil tank 1. Users do not need to purchase e-liquid 3 separately after purchase, nor do they need to perform the e-liquid filling operation themselves. This completely solves the tedious process of manually filling e-liquid after purchasing e-liquid in traditional replaceable cartridges. An outer tube 4 is fitted on the outside of the oil tank 1 to provide protection and support. A silicone ring 2 is installed on the inside of the cavity to achieve sealed storage of the pre-filled e-liquid 3, preventing leakage during transportation and storage. A precise assembly interface for the atomizer coil assembly is reserved at the bottom. The oil path 20 extends along the inside of the oil tank 1 to the assembly interface, ensuring that the e-liquid 3 can be quickly guided to the oil guide after coil replacement. The bottom cover 8 is installed on the outside of the bottom of the oil tank 1, which not only protects the atomizer coil assembly but also provides a grip benchmark for coil replacement.

[0031] The atomizer coil assembly adopts a modular integrated design. The core consists of an atomizer coil base 17, a bracket 7, an atomizer coil cover 10, an oil guide component, and a heating wire 14. The bracket 7 is fixed above the atomizer coil base 17, and the atomizer coil cover 10 is fitted on the outside to form an independent protective cavity. The oil guide component consists of an outer cotton 12, an inner cotton 13, and an absorbent cotton 16. The inner cotton 13 covers the heating wire 14, and the outer cotton 12 is fitted on the outside of the inner cotton 13 and connects with the absorbent cotton 16. This integrated structure allows the atomizer coil assembly to be disassembled and installed as an independent finished product. Users can reuse it until the heating wire 14 burns out, without having to discard the oil tank 1 when the e-liquid 3 is exhausted, which greatly reduces the cost of use. The absorbent cotton 16 is precisely connected to the oil passage 20 of the oil tank 1. After the coil is replaced, it can quickly absorb the e-liquid 3 and wet the inner cotton 13 and the outer cotton 12, preventing the heating wire 14 from burning dry and ensuring stable atomization immediately after the coil is replaced.

[0032] The sealing silicone 6 is located at the assembly interface between the oil tank 1 and the atomizer core assembly, fitting the bottom end face of the oil tank 1 and the top end face of the bracket 7. During the replacement process, the sealing surfaces are automatically and precisely fitted as the atomizer core assembly is disassembled and assembled. This ensures that the pre-filled e-liquid 3 does not leak during storage and use, and maintains stable sealing performance after multiple replacements. It solves the problem of sealing failure after replacement in traditional detachable structures, ensuring the safety of the bundled structure between the oil tank 1 and the e-liquid 3.

[0033] Magnet 9 is fixed inside the atomizer core base 17, forming a magnetic matching structure with the bottom of the oil tank 1 or the bottom cover 8, thus creating a tool-free detachable connection. When changing the coil, the user only needs to pinch the latch of the atomizer core base 17 or the bottom cover 8 to separate the old atomizer core component, align the new atomizer core component with the bottom interface of the oil tank 1 and press to complete the assembly. This achieves convenient operation of pressing to install and snapping to remove, which meets the scenario requirement of opening the oil circuit 20 by pushing in the e-liquid cartridge. No complicated steps are required, improving the efficiency of changing the coil.

[0034] The electrode 18 is mounted on the atomizer core base 17 and is electrically connected to the heating wire 14 via a wire. An insulating silicone 15 is provided between the electrode 18 and the atomizer core base 17 to achieve electrical isolation. After the core is replaced, the electrode 18 can be directly and precisely connected to an external power supply component without additional wiring or debugging. At the same time, the insulating silicone 15 prevents the electrode 18 from short-circuiting with the atomizer core base 17, ensuring safe use.

[0035] The air inlet 19 is located on the end face or side wall of the atomizer core base 17 and is connected to the protective cavity formed by the atomizer core cover 10. After the core is replaced, the air intake channel remains unobstructed, ensuring sufficient air when the heating wire 14 atomizes the e-liquid 3, so that the atomization flavor remains stable during repeated use and avoids the impact of poor air intake on the user experience due to core replacement.

[0036] When all components work together, the oil tank 1 is pre-filled with e-liquid 3 and stored in a double-sealed manner through the silicone ring 2 and sealing silicone 6. The modular atomizer core assembly is quickly magnetically connected to the oil tank 1 via the magnet 9. The oil passage 20 and the oil-absorbing cotton 16 are instantly connected to allow the e-liquid 3 to be quickly soaked in. The electrode 18 automatically completes the electrical connection. After the heating wire 14 is powered on, it atomizes the e-liquid 3. The air intake 19 ensures air circulation. After the e-liquid 3 is exhausted, the user only needs to disassemble the old atomizer core assembly and replace it with a new one to reuse the oil tank 1 until the atomizer core assembly burns out and needs to be replaced. There is no need to discard the whole thing. This collaborative design solves the pain points of existing technologies from three aspects: pre-filling without self-filling, reusable atomizer core, and convenient core replacement. It not only improves the user experience by binding the oil tank 1 with the e-liquid 3, but also reduces the cost of use through the replaceable core design, providing a reliable guarantee for the efficient and economical use of pre-filled e-liquid cartridges.

[0037] Example 1:

[0038] First, when using a pre-filled replaceable cartridge for the first time, the user should remove the cartridge body and the modular atomizer core assembly, check whether the pre-filled e-liquid 3 in the oil tank 1 is sufficient, confirm that the silicone ring 2 is tightly fitted to the opening of the oil tank 1 without looseness, the sealing silicone 6 is intact and undamaged, and that the outer cotton 12, inner cotton 13 and oil-absorbing cotton 16 of the atomizer core assembly are not deformed and the heating wire 14 is not oxidized.

[0039] Next, hold the outer tube 4 on the outside of the oil tank 1 with one hand, and pinch the handle of the atomizer core base 17 with the other hand. Align the atomizer core assembly with the bottom interface of the oil tank 1, and gently press to make the magnet 9 magnetically attach to the bottom of the oil tank 1 until you hear a click. This confirms that the atomizer core assembly is installed in place. At this time, the oil circuit 20 and the absorbent cotton 16 are precisely connected, and the e-liquid conduction channel 3 is automatically opened.

[0040] During use, the user turns on the external power supply device, and the electrode 18 is precisely connected to the power supply component. The e-liquid 3 is quickly soaked into the inner cotton 13 through the oil-absorbing cotton 16 and the outer cotton 12. After the heating wire 14 is powered on, it stably atomizes the e-liquid 3. The air intake 19 ensures smooth airflow, and the atomized flavor is uniform without any burnt taste. After one hour of continuous use, the e-liquid 3 did not leak. The sealing structure formed by the sealing silicone 6 and the silicone ring 2 always remains reliable. No additional oil filling is required, which fully meets the needs of daily portable use.

[0041] Example 2:

[0042] When the e-liquid 3 is exhausted, the user needs to replace the atomizer coil assembly to continue using it. First, hold the e-liquid tank 1 with one hand, and pinch the handle of the atomizer coil base 17 with the other hand. Use the anti-slip texture of the handle to increase friction and gently pull it outward to disengage the magnet 9 from the magnetic attraction. Quickly remove the old atomizer coil assembly and check that the sealing silicone 6 at the bottom of the e-liquid tank 1 is unworn and the e-liquid passage 20 is unblocked. Then, take out the new atomizer coil assembly, align it with the bottom interface of the e-liquid tank 1 and press it in. The magnet 9 will automatically complete the positioning and locking. The entire coil replacement process does not require tools and takes less than 5 seconds with one hand.

[0043] After replacement and startup, the absorbent cotton 16 quickly absorbs the pre-filled e-liquid 3 in the oil tank 1, achieving stable atomization within 3 seconds, and the heating coil 14 does not dry-burn. When the oil tank 1 is reused until the 5th coil replacement, the sealing performance of the sealing silicone 6 and silicone ring 2 remains good, the e-liquid 3 does not overflow and cause pollution, and the atomizing coil assembly can continue to be used until the heating coil 14 burns, greatly reducing the user's operating costs and adapting to high-frequency use scenarios.

[0044] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A pre-filled, replaceable e-cigarette cartridge, comprising an oil tank (1), wherein the oil tank (1) has a receiving cavity, wherein the receiving cavity is pre-filled with e-liquid (3), the oil tank (1) is configured with a suitable sealing structure, and an atomizing core assembly is detachably connected to the bottom of the oil tank (1); characterized in that The atomizing core assembly includes an atomizing core base (17), on which a bracket (7) is fixedly mounted. An oil guide is mounted on the bracket (7), and the oil guide includes an outer cotton (12) and an inner cotton (13). A heating element is wrapped inside the oil guide, and the heating element is a heating wire (14). The oil guide is in communication with the e-liquid (3) in the accommodating cavity. A sealing element is provided at the connection position between the oil tank (1) and the atomizing core assembly. At least two air inlets (19) are opened on the atomizing core base (17), and an electrode (18) is mounted thereon. The air inlets (19) are connected to the atomizing area where the heating wire (14) is located. The electrode (18) is electrically connected to the heating wire (14).

2. The pre-oiled replaceable core cigarette cartridge of claim 1, wherein: The sealing structure includes a silicone ring (2) and a sealing silicone (6). The silicone ring (2) is located inside the cavity of the oil tank (1), and the sealing silicone (6) is located at the mating part between the oil tank (1) and the bracket (7).

3. The pre-oiled replaceable core cigarette cartridge of claim 2, wherein: The heating wire (14) is wrapped inside the inner cotton (13), and the outer cotton (12) is sleeved on the outside of the inner cotton (13). The outer cotton (12) is in contact with the e-liquid (3) in the accommodating cavity.

4. The pre-oiled replaceable core cigarette cartridge of claim 3, wherein: The oil tank (1) and the atomizing core assembly are detachably connected by a magnetic structure. The magnetic structure includes a magnet (9), which is disposed on the atomizing core base (17). The magnet (9) and the oil tank (1) form a magnetic attraction.

5. The pre-oiled replaceable core cigarette cartridge of claim 4, wherein: An oil inlet is provided on the oil tank (1), and an oil plug (5) is provided at the oil inlet. An auxiliary sealing element is provided between the oil plug (5) and the oil inlet.

6. A pre-filled, replaceable cartridge according to claim 5, characterized in that: The atomizing core assembly also includes an atomizing core cover (10), which is sleeved on the outside of the oil guide and one end is fixedly connected to the bracket (7).

7. A pre-filled, replaceable cartridge according to claim 1, characterized in that: The air inlet (19) is located on the end face of the atomizing core base (17), and the number of air inlets (19) is at least two.

8. A pre-filled, replaceable cartridge according to claim 1, characterized in that: The electrode (18) protrudes from the bottom surface of the atomizing core base (17), and insulating silicone (15) is provided between the electrode (18) and the atomizing core base (17).

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