Heating element structure and aerosol-generating device
By using a flexible circuit board and elastic contact components, the problem of unstable connection between the heating film and the circuit board was solved, resulting in higher connection reliability and equipment stability, simplifying the production process and improving the safety and lifespan of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU TONLY ELECTRONICS LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-21
AI Technical Summary
In existing aerosol generating devices, the connection between the heating film and the circuit board is easily affected by mechanical stress, which can cause the solder joints to loosen or break, leading to short circuits or open circuits and affecting the normal operation of the equipment.
The heating element is connected to a flexible circuit board and elastic contacts, eliminating the need for traditional nickel wire soldering. The elastic contacts enable a reliable connection between the heating element and the circuit board. Combined with the housing design and protective mounting plate, stability and reliability are improved.
It improves the reliability of the connection between the heating element structure and the circuit board, reduces the risk of loose or broken solder joints, improves the safety and service life of the equipment, simplifies the production process, and reduces noise and production time.
Smart Images
Figure CN224140178U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerosol technology, and in particular to a heating element structure and an aerosol generating device. Background Technology
[0002] Aerosol generation devices play an important role in many applications, such as air quality monitoring, environmental research, and medical devices. The heating element, as the core component of the device, is responsible for heating the liquid to an atomized state to generate aerosols.
[0003] In related technologies, the connection between the heating film and the circuit board is usually made by welding with thicker and harder nickel wire. The welding point is easily affected by mechanical stress during use, especially when the equipment vibrates or moves frequently. The welding point may loosen or break, which will lead to the interruption of the electrical connection between the heating film and the circuit board, resulting in short circuit or open circuit, and affecting the normal operation of the equipment. Utility Model Content
[0004] The main purpose of this invention is to propose a heating element structure and an aerosol generating device, which aims to improve the reliability of the connection between the circuit board and the heating element.
[0005] To achieve the above objectives, the heating element structure proposed in this utility model includes:
[0006] The housing has a mounting groove.
[0007] A heating assembly, comprising a heating tube and a heating element, wherein the heating tube is housed within the mounting groove, the heating element is sleeved on the heating tube, the heating element has a connecting wire, a conductive sheet is formed at the end of the connecting wire away from the heating element, a portion of the connecting wire passes through the housing, and the conductive sheet is exposed within the housing; and
[0008] A flexible circuit board is connected to the housing. The flexible circuit board is provided with a first elastic contact, which elastically abuts against and is electrically connected to the conductive sheet on the side opposite to the flexible circuit board.
[0009] This invention also proposes an aerosol generating device, including the heating element structure described in the above embodiments. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0011] Figure 1 A schematic diagram of an embodiment of the heating element structure provided by this utility model;
[0012] Figure 2 An exploded structural diagram of an embodiment of the heating element structure of this utility model;
[0013] Figure 3 A cross-sectional view of an embodiment of the heating element structure of this utility model.
[0014] Explanation of icon numbers:
[0015] 100. Heating element structure; 1. Housing; 11. Mounting groove; 12. Upper shell; 13. Lower shell; 131. Receptacle; 14. Perforation; 2. Heating component; 21. Heating tube; 22. Heating element; 221. Connecting wire; 222. Conductive sheet; 3. Flexible circuit board; 31. First connecting part; 32. Second connecting part; 4. First elastic contact; 5. Protective mounting plate; 6. Fastener; 7. Temperature sensor; 8. Sealing ring.
[0016] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0017] 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 scope of protection of the present utility model.
[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0019] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0020] This utility model proposes a heating element structure 100.
[0021] Please see Figure 1 and Figure 3 In one embodiment of this utility model, the heating element structure 100 includes a housing 1, a heating component 2, and a flexible circuit board 3. The housing 1 has a mounting groove 11. The heating component 2 includes a heating tube 21 and a heating element 22. The heating tube 21 is housed in the mounting groove 11, and the heating element 22 is sleeved on the heating tube 21. The heating element 22 has a connecting line 221. A conductive sheet 222 is formed at one end of the connecting line 221 away from the heating element 22. A portion of the connecting line 221 passes through the housing 1, and the conductive sheet 222 is exposed in the housing 1. The flexible circuit board 3 is connected to the housing 1. The flexible circuit board 3 has a first elastic contact 4. The first elastic contact 4 elastically abuts against and is electrically connected to the conductive sheet 222 on the side opposite to the flexible circuit board 3.
[0022] In this utility model, an elastic contact is used to connect the flexible circuit board 3 to the heating element 22, eliminating the traditional nickel wire welding connection method, simplifying the connection process, and improving the reliability and stability of the connection. Eliminating the welding process shortens production time, improves production efficiency, avoids noise problems caused by vibration when the connecting wire 221 (nickel wire) is energized, and eliminates the need for glue fixation, reducing the risk of loosening or breakage of the welding point, improving equipment safety, and making the equipment operation more stable. The use of elastic contact reduces the impact of mechanical stress on the connection point, improving the reliability and service life of the equipment.
[0023] The housing 1 provides support and protection for the entire heating element structure 100, and has an internal mounting groove 11 for accommodating the heating element 2. The heating element 22 is mainly responsible for efficiently converting electrical energy into heat energy and connecting to an external circuit via a connecting wire 221 to achieve electrothermal conversion and temperature control. The heating tube 21 is mainly responsible for efficiently transferring the heat generated by the heating element 22 to liquids or gases, while providing structural support and preventing slurry accumulation. The flexible circuit board 3 is used to realize the electrical connection between the heating element 2 and the external circuit, and works with the heating element 22 to achieve electrothermal conversion and temperature control.
[0024] Further, please refer to Figure 2 and Figure 3 In one embodiment of this utility model, the heating element structure 100 includes a protective mounting plate 5, which is detachably connected to the housing 1. The flexible circuit board 3 has a first connecting portion 31, which is provided with a first elastic contact 4. The first connecting portion 31 is connected to the protective mounting plate 5. The protective mounting plate 5 and the housing 1 are detachably connected, such as by screws, clips, or magnetic attraction, which facilitates quick disassembly and replacement of the protective mounting plate 5 by users or maintenance personnel. When installing the heating element structure 100, the first elastic contact 4 on the first connecting portion 31 can be aligned with the conductive sheet 222 before connecting the protective mounting plate 5 to the housing 1 for easy assembly. The first connecting portion 31 of the flexible circuit board 3 is connected to the protective mounting plate 5, which provides additional support and protection for the flexible circuit board 3, ensuring the stability of the flexible circuit board 3 during use.
[0025] Please see Figure 2 and Figure 3 In another embodiment of the present invention, the heating element structure 100 includes a main control board and a second elastic contact. The flexible circuit board 3 has a second connecting part 32, and the second connecting part 32 is provided with the second elastic contact. The main control board is connected to the protective mounting plate 5. The second elastic contact elastically abuts against the side of the flexible circuit board 3 and is electrically connected to the main control board. The main control board is connected to the flexible circuit board 3 using a second elastic contact, which simplifies the connection process and improves the reliability and stability of the connection between the main control board and the flexible circuit board 3. The main control board is used to control the operation of the entire heating element structure 100. When the user starts the device, the battery in the heating element structure 100 supplies power to the heating element 22. Specifically, the battery is electrically connected to the main control board, and the current is transmitted through the main control board to the second elastic contact, and then to the flexible circuit board 3. The current is transmitted through the first elastic contact 4 to the conductive sheet 222 and the heating element 22. After the heating element 22 is energized, it generates heat, which is transferred to the liquid through the heating tube 21, heating it to an atomized state and generating an aerosol for the user to inhale. The main control board can control the current according to a preset program to control the heating power of the heating element 22.
[0026] Specifically, please refer to Figure 1 In one embodiment of this utility model, the housing 1 has a through hole 14, a portion of the connecting wire 221 passes through the through hole 14, and the conductive sheet 222 is exposed in the through hole 14 and connected to the bottom wall of the housing 1. An installation space is formed between the bottom wall of the housing 1 and the top wall of the protective mounting plate 5 for the installation of the first elastic contact 4. The through hole 14 in the housing 1 allows the connecting wire 221 of the heating element 22 to pass through, and a portion of the connecting wire 221 passes through the through hole 14, allowing the conductive sheet 222 to be exposed outside the housing 1. An installation space is formed between the bottom wall of the housing 1 and the top wall of the protective mounting plate 5 for the installation of the first elastic contact 4. This design provides sufficient space for the elastic contact to ensure stable contact with the conductive sheet 222.
[0027] To further improve the stable electrical connection between the flexible circuit board 3 and the heating element 22, please refer to [link / reference needed]. Figure 2 In one embodiment of this utility model, the heating element 22 has two connecting lines 221. Each connecting line 221 has a conductive sheet 222 formed at its end away from the heating element 22. The flexible circuit board 3 has two first elastic contacts 4. Each first elastic contact 4 elastically abuts against and is electrically connected to a conductive sheet 222 on its side facing away from the flexible circuit board 3. The heating element 22 has two connecting lines 221. One end of each connecting line 221 is electrically connected to the heating element 22, and the other end extends from the heating pipe 21 to form a conductive sheet 222. Partial structures of the two connecting lines 221 pass through two through holes 14 in the housing 1, allowing the two conductive sheets 222 to be exposed outside the housing 1 for easy connection to external circuits. Correspondingly, the flexible circuit board 3 has two first connecting portions 31. Each first connecting portion 31 has a first elastic contact 4. Each first elastic contact 4 elastically abuts against and is electrically connected to a conductive sheet 222 on its side facing away from the flexible circuit board 3, ensuring a stable electrical connection between the flexible circuit board 3 and the heating element 22.
[0028] Please see Figure 2In one embodiment of this utility model, the heating element structure 100 includes a fastener 6, the housing 1 includes an upper shell 12 and a lower shell 13, the upper shell 12 is sleeved on the lower shell 13 and forms the mounting groove 11, the upper shell 12 and the lower shell 13 are both sleeved on the heating tube 21, and the fastener 6 is sequentially inserted through the protective mounting plate 5, the upper shell 12 and the lower shell 13 to connect the protective mounting plate 5, the upper shell 12 and the lower shell 13. The housing 1 consists of an upper housing 12 and a lower housing 13. The upper housing 12 is fitted onto the lower housing 13 to form a mounting groove 11. Both the upper housing 12 and the lower housing 13 are fitted onto the heating element 21, providing double protection and support for the heating element 21. Fasteners 6 are sequentially inserted through the protective mounting plate 5, the upper housing 12, and the lower housing 13, tightly connecting the protective mounting plate 5, the upper housing 12, and the lower housing 13 together. The fasteners 6 can be screws, bolts, or other mechanical fasteners 6, ensuring the stability and reliability of the entire structure. The function of the fasteners 6 is to ensure a firm connection between the protective mounting plate 5, the upper housing 12, and the lower housing 13, preventing the structure from loosening due to vibration or external force during use, and improving the stability and service life of the equipment.
[0029] To improve the safety of the heating element structure 100 during operation, please refer to [link / reference needed]. Figure 3 In one embodiment of this utility model, the heating element structure 100 includes a temperature sensor 7. A receiving groove 131 is formed on the side of the lower shell 13 facing the protective mounting plate 5, and the temperature sensor 7 is housed within the receiving groove 131. The temperature sensor 7 is electrically connected to the flexible circuit board 3. The receiving groove 131 is used to accommodate the temperature sensor 7, which is used to monitor the temperature of the heating element in real time, ensuring that the heating element operates within a safe temperature range and improving the safety of the heating element structure 100 during operation. The temperature sensor 7 is electrically connected to the flexible circuit board 3, transmitting the detected temperature signal to the flexible circuit board 3, which then transmits it to the main control board. When the temperature exceeds a preset threshold, the main control board automatically adjusts the heating power to reduce heat generation and ensure stable operation of the equipment.
[0030] To improve the sealing performance of the heating element structure 100, please refer to [link / reference needed]. Figure 3 In one embodiment of this utility model, the heating element structure 100 includes two sealing rings 8, which are respectively fitted onto both ends of the heating tube 21. One sealing ring 8 is in sealing contact with the upper shell 12, and the other sealing ring 8 is in sealing contact with the lower shell 13. The two sealing rings 8, respectively fitted onto both ends of the heating tube 21, with one sealing ring 8 in sealing contact with the upper shell 12 and the other sealing ring 8 in sealing contact with the lower shell 13, prevent liquid or gas leakage, ensure the sealing between the heating tube 21 and the shell 1, and improve the safety and reliability of the equipment.
[0031] In one embodiment of this utility model, the heating element 21 is made of ceramic, and a silver film heating layer is provided on the circumferential surface of the heating element 21. Ceramic material has high thermal conductivity, good insulation performance and high temperature resistance. The silver film heating layer on the circumferential surface of the heating element 21 can efficiently convert electrical energy into heat energy. The inside and outside of the heating element 21 are glazed, the surface is smooth and not easy to accumulate slurry, thus avoiding the odor caused by slurry accumulation. Two sealing rings 8 are respectively sleeved on both ends of the ceramic heating element 21 to prevent the heating element 21 from being damaged by collision during assembly. While improving the sealing between the heating element 21 and the shell 1, it also achieves the protection of the heating element 21.
[0032] This utility model also proposes an aerosol generating device, which includes a heating element structure 100. The specific structure of the heating element structure 100 is as described in the above embodiments. Since this aerosol generating device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0033] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A heat generating body structure, characterized by comprising: include: The housing has a mounting groove. A heating element, comprising a heating tube and a heating plate, wherein the heating tube is housed in the mounting groove, the heating plate is sleeved on the heating tube, the heating plate has a connecting wire, a conductive plate is formed at the end of the connecting wire away from the heating plate, a portion of the connecting wire passes through the housing, and the conductive plate is exposed in the housing. as well as A flexible circuit board is connected to the housing. The flexible circuit board is provided with a first elastic contact, which elastically abuts against and is electrically connected to the conductive sheet on the side opposite to the flexible circuit board.
2. The heat generating body structure according to claim 1, wherein The heating element structure includes a protective mounting plate, which is detachably connected to the housing. The flexible circuit board has a first connecting portion, which is provided with a first elastic contact element and is connected to the protective mounting plate.
3. The heat generating body structure according to claim 2, wherein The heating element structure includes a main control board and a second elastic contact. The flexible circuit board has a second connecting part, and the second connecting part is provided with the second elastic contact. The main control board is connected to the protective mounting plate. The side of the second elastic contact facing away from the flexible circuit board elastically abuts against and is electrically connected to the main control board.
4. The heat generating body structure according to claim 2, wherein The housing has a perforation, a portion of the connecting wire passes through the perforation, the conductive sheet is exposed in the perforation and connected to the bottom wall of the housing, and an installation space is formed between the bottom wall of the housing and the top wall of the protective mounting plate for the installation of the first elastic contact.
5. The heat generating body structure according to any one of claims 1 to 4, wherein The heating element has two connecting lines, and a conductive sheet is formed at the end of each connecting line away from the heating element. The flexible circuit board is provided with two first elastic contacts, and each first elastic contact elastically abuts against and is electrically connected to a conductive sheet on the side opposite to the flexible circuit board.
6. The heat generating body structure according to any one of claims 2 to 4, wherein The heating element structure includes fasteners, and the housing includes an upper shell and a lower shell. The upper shell is fitted onto the lower shell and forms the mounting groove. Both the upper shell and the lower shell are fitted onto the heating tube. The fasteners are sequentially inserted through the protective mounting plate, the upper shell, and the lower shell to connect the protective mounting plate, the upper shell, and the lower shell.
7. The heat generating body structure according to claim 6, wherein The heating element structure includes a temperature sensor. A groove is provided on the side of the lower shell facing the protective mounting plate. The temperature sensor is housed in the groove and is electrically connected to the flexible circuit board.
8. The heat generating body structure according to claim 6, wherein The heating element structure includes two sealing rings, which are respectively fitted onto both ends of the heating tube. One sealing ring is in sealing contact with the upper shell, and the other sealing ring is in sealing contact with the lower shell.
9. The heat generating body structure according to any one of claims 1 to 4, wherein The heating element is made of ceramic, and a silver film heating layer is provided on the periphery of the heating element.
10. An aerosol-generating device comprising: Includes the heating element structure as described in any one of claims 1 to 9.