Aerosol-generating device

Abstract

The application discloses an aerosol generating device, and relates to the technical field of aerosol, wherein the aerosol generating device comprises a shell, a sealing ring and a plurality of first fasteners; the shell comprises an upper shell, a middle shell and a lower shell, the upper shell is partially sleeved on the lower shell, the middle shell is contained in the lower shell and is located at the sleeving position of the upper shell and the lower shell; the sealing ring is sleeved on the middle shell and elastically abuts against the inner circumferential wall of the lower shell; the plurality of first fasteners are arranged at intervals along the two side walls in the length direction of the shell and are sequentially threaded through the upper shell, the lower shell and the middle shell to connect the upper shell, the lower shell and the middle shell.

Description

Technical Field

[0001] This invention relates to the field of aerosol technology, and in particular to an aerosol generating apparatus. Background Technology

[0002] Aerosol generating devices typically include a housing, usually elongated in shape, to house and protect the internal electronic components and aerosol generating components. However, because elongated housings are weak in strength along their length, they are prone to deformation. In the event of deformation, moisture may seep into the device through gaps or joints in the housing, potentially damaging the electronic components or affecting the quality of aerosol generation. Summary of the Invention

[0003] The main objective of this invention is to provide an aerosol generating device that aims to improve the waterproof performance of the device.

[0004] To achieve the above objectives, the present invention provides an aerosol generating apparatus comprising:

[0005] The housing includes an upper shell, a middle shell, and a lower shell. The upper shell is partially fitted onto the lower shell, and the middle shell is housed within the lower shell and located at the joint between the upper shell and the lower shell.

[0006] A sealing ring, wherein the sealing ring is fitted onto the middle shell and elastically abuts against the inner peripheral wall of the lower shell; and

[0007] A plurality of first fasteners are arranged at intervals along the two side walls of the housing along the length direction and are sequentially inserted into the upper shell, the lower shell and the middle shell to connect the upper shell, the lower shell and the middle shell. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0009] Figure 1 An exploded structural diagram of an embodiment of the aerosol generating device provided by the present invention;

[0010] Figure 2 An exploded structural schematic diagram of another embodiment of the aerosol generating device of the present invention is provided;

[0011] Figure 3 A first cross-sectional view of an embodiment of the aerosol generating apparatus of the present invention is provided;

[0012] Figure 4 A second cross-sectional view of an embodiment of the aerosol generating apparatus of the present invention is provided;

[0013] Figure 5 A third cross-sectional view of an embodiment of the aerosol generating apparatus of the present invention is provided;

[0014] Figure 6 A fourth cross-sectional view of an embodiment of the aerosol generating apparatus of the present invention is provided;

[0015] Figure 7 for Figure 6 Enlarged view of point A in the middle section;

[0016] Figure 8 for Figure 6 A magnified schematic diagram of part B in the middle.

[0017] Explanation of icon numbers:

[0018] 100. Aerosol generating device; 1. Housing; 11. Upper housing; 111. First mounting groove; 112. First snap-fit ​​part; 113. Third mounting groove; 12. Middle housing; 121. Second mating part; 122. Receiving groove; 123. Protrusion; 124. Limiting part; 125. Mounting hole; 126. Positioning post; 127. Second fastener; 128. Through hole; 129. Fastening groove; 13. Lower housing; 131. Connecting plate; 132. 1. First mating part; 133. Second mounting groove; 134. Second snap-fit ​​part; 135. Limiting step; 14. Cover; 2. Sealing ring; 3. First fastener; 4. Battery; 5. Main board; 51. Connector; 52. First sealing part; 6. Aerosol generating component; 7. Flexible circuit board; 71. First connecting part; 72. Second connecting part; 73. Spring pin; 8. Sealing sleeve; 81. Second sealing part; 82. Snap-fit ​​groove; 9. Mounting block.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications 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 indications will also change accordingly.

[0022] Furthermore, if the embodiments of this invention 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. Thus, 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 invention.

[0023] This invention proposes an aerosol generating device 100.

[0024] Please see Figure 1 and Figure 5 In one embodiment of the present invention, the aerosol generating device 100 includes a housing 1, a sealing ring 2, and a plurality of first fasteners 3: the housing 1 includes an upper shell 11, a middle shell 12, and a lower shell 13, the upper shell 11 is partially sleeved on the lower shell 13, the middle shell 12 is accommodated within the lower shell 13 and is located at the joint of the upper shell 11 and the lower shell 13; the sealing ring 2 is sleeved on the middle shell 12 and elastically abuts against the inner peripheral wall of the lower shell 13; the plurality of first fasteners 3 are arranged at intervals along the two side walls of the housing 1 along the length direction and are sequentially inserted through the upper shell 11, the lower shell 13, and the middle shell 12 to connect the upper shell 11, the lower shell 13, and the middle shell 12.

[0025] In the technical solution of this invention, the upper shell 11, the middle shell 12, and the lower shell 13 are locked and fixed by multiple layers and a common first fastener 3, ensuring a tight connection between the three, enhancing the strength and structural stability of the shell 1 in the length direction, improving the deformation resistance of the shell 1, and thus enhancing the waterproof performance of the device; the sealing ring 2 is set on the middle shell 12 and elastically abuts against the inner peripheral wall of the lower shell 13, ensuring the sealing between the middle shell 12 and the lower shell 13; by designing multiple first fasteners 3 on the two side walls in the length direction where the shell strength is weak, the first fasteners 3 not only serve to connect the upper shell 11, the middle shell 12, and the lower shell 13, but also cooperate with the sealing ring 2 to vertically press the side of the sealing ring 2 in the width direction of the shell 1, further ensuring the reliability of waterproofing and enhancing the structural stability of the entire device. By designing a sealing ring 2 on the middle shell 12 and setting multiple first fasteners 3 on the side of the shell in the weaker longitudinal direction to vertically press the sealing ring 2, the waterproof performance of the device is significantly improved; the spaced arrangement of the first fasteners 3 and the vertical pressing design of the first fasteners 3 enhance the structural stability of the device, making it more resistant to external impacts and pressures; by enhancing structural stability and waterproof performance, the durability of the entire aerosol generating device 100 is improved, reducing maintenance costs and potential failure risks.

[0026] Further, please refer to Figure 1 and Figure 5 In one embodiment, the lower shell 13 has multiple connecting plates 131 spaced apart on its opposite side walls. The multiple connecting plates 131 are located between the middle shell 12 and the upper shell 11. Each of the first fasteners 3 passes through the upper shell 11, one of the connecting plates 131, and the middle shell 12. The connecting plate 131 provides a direct connection point for the lower shell 13, enabling the first fastener 3 to more firmly connect the upper shell 11, the middle shell 12, and the lower shell 13 together. The spaced arrangement of the connecting plate 131 can better distribute the force on the first fastener 3, significantly improving the structural stability of the entire device in both length and width directions. Especially when the device is subjected to external impact or vibration, the connecting plate 131 can effectively disperse stress and reduce the risk of shell 1 deformation. The design of the connecting plate 131 makes the installation of the first fastener 3 more convenient and precise. During assembly, the connecting plate 131 can act as a positioning component to ensure that the first fastener 3 can accurately pass through the upper shell 11, the connecting plate 131, and the middle shell 12, thereby improving assembly efficiency and quality. By providing a stable connection point for the first fastener 3 through the connecting plate 131, the overall performance of the device is significantly improved, reducing maintenance costs and potential failure risks, and enhancing the durability and reliability of the device.

[0027] Please see Figure 4In one embodiment, a limiting step 135 is formed circumferentially on the side of the lower shell 13 facing the upper shell 11. The end of the upper shell 11 near the lower shell 13 abuts against the limiting step 135 for restraint. The limiting step 135 is formed circumferentially on the lower shell 13, creating a ring-shaped limiting structure. Its height and width can be precisely designed according to the dimensions of the upper shell 11 to ensure that the upper shell 11 can accurately abut against the limiting step 135. The close contact between the end of the upper shell 11 near the lower shell 13 and the limiting step 135, through this mechanical restraint, restricts the relative position between the upper shell 11 and the lower shell 13, preventing the upper shell 11 from shifting or shaking during assembly. The design of the limiting step 135 provides precise restraint for the assembly of the upper shell 11 and the lower shell 13. Positioning ensures accurate alignment between the two, reducing errors during assembly and improving assembly efficiency and quality. The connection between the upper shell 11 and the lower shell 13 is tighter through the contact of the limiting step 135, enhancing the structural stability of the entire device. During use, this limiting structure can effectively prevent the shell 1 from loosening or deforming due to external forces. The tight contact between the limiting step 135 and the upper shell 11 further enhances the sealing between the upper shell 11 and the lower shell 13, better preventing liquid or gas leakage and improving the waterproof performance of the device. In the actual assembly process, the middle shell 12 is first placed inside the lower shell 13 to ensure that the middle shell 12 and the inner peripheral wall of the lower shell 13 fit tightly. Then, the upper shell 11 is fitted onto the lower shell 13 so that the side of the upper shell 11 facing the lower shell 13 is in close contact with the limiting step 135. Finally, the first fastener 3 passes through the upper shell 11, the connecting plate 131 and the middle shell 12 in sequence to firmly connect the three together. The design of the limiting step 135 enables the upper shell 11 to be quickly positioned during the assembly process, ensuring the accuracy and reliability of the assembly.

[0028] To further improve the waterproof performance of the device, please refer to [link / reference needed]. Figure 5 In one embodiment, the two opposite side walls of the middle shell 12 are provided with a plurality of fastening grooves 129 spaced apart. Each of the first fasteners 3 includes a threaded bolt and a nut, and each nut is accommodated in one of the fastening grooves 129. The bolt can directly pass through the upper shell 11, the connecting plate 131 and the groove of the fastening groove 129, and be threadedly connected to the nut, thereby achieving a tight connection between the upper shell 11, the middle shell 12 and the lower shell 13. The fastening grooves 129 are formed on the opposite side walls of the middle shell 12, and their shape and size match the nut, which can accommodate the nut and fix it in the groove. The design of the fastening grooves 129 not only provides an installation position for the nut, but also plays a role in hiding and protecting the nut. The design of the fastening grooves 129 makes the nut hidden inside the middle shell 12, and the connection point between the bolt and the nut is completely located inside the shell 1, avoiding liquid leakage caused by the exposed nut. This design significantly improves the waterproof performance of the device and ensures that the device can operate stably in high humidity or liquid environments.

[0029] To achieve the pre-tightening of the upper shell 11, middle shell 12, and lower shell 13, please refer to... Figure 3 and Figure 4 In one embodiment, the upper shell 11 has a first mounting groove 111. Along the length of the upper shell 11, the two opposite side walls of the first mounting groove 111 are provided with a plurality of first snap-fit ​​portions 112. The lower shell 13 has a plurality of first mating portions 132 provided along the two side walls of the lower shell 13. Each first snap-fit ​​portion 112 is engaged with a first mating portion 132 to connect the upper shell 11 and the lower shell 13. The lower shell 13 has a second mounting groove 133. Along the length of the lower shell 13, the two opposite side walls of the second mounting groove 133 are provided with a plurality of second snap-fit ​​portions 134. The middle shell 12 has a plurality of second mating portions 121 provided along the two side walls of the middle shell 12. Each second snap-fit ​​portion 134 is engaged with a second mating portion 121 to connect the lower shell 13 and the middle shell 12. The first snap-fit ​​part 112 and the first mating part 132 can be either a slot or a buckle. For example, the first snap-fit ​​part 112 can be a buckle provided on the upper shell 11, and the first mating part 132 can be a slot provided on the lower shell 13. When the upper shell 11 and the lower shell 13 are assembled, the buckle is inserted into the slot to form a stable snap-fit ​​engagement. Similarly, the second snap-fit ​​part 134 and the second mating part 121 can also be either a slot or a buckle. For example, the second snap-fit ​​part 134 can be a buckle provided on the lower shell 13, and the second mating part 121 can be a slot provided on the middle shell 12. When the lower shell 13 and the middle shell 12 are assembled, the buckle is inserted into the slot to form a stable snap-fit ​​engagement. The snap-fit ​​design makes the connection between the upper shell 11, the middle shell 12 and the lower shell 13 more convenient, provides sufficient pre-tightening force, ensures a tight connection between the upper shell 11, the middle shell 12 and the lower shell 13, and enhances the structural stability of the entire device. During assembly, the middle shell 12 is placed into the second mounting groove 133 of the lower shell 13, aligning the second mating part 121 on the middle shell 12 with the second snap-fit ​​part 134 on the lower shell 13. Then, the two are tightly connected by snap-fit ​​action. The upper shell 11 is then fitted onto the lower shell 13, aligning the first snap-fit ​​part 112 on the upper shell 11 with the first mating part 132 on the lower shell 13. Then, the two are tightly connected by snap-fit ​​action. After snap-fit ​​is completed, the first fastener 3 is used to fasten the upper shell 11, the middle shell 12, and the lower shell 13 to ensure a tight connection between the shells 1 and improve the waterproof performance of the shells 1.

[0030] Further, please refer to Figure 3In one embodiment, the aerosol generating device 100 includes a cover 14, a battery 4, a main board 5, and an aerosol generating component 6. The upper shell 11 is recessed towards the middle shell 12 to form a third mounting groove 113. The aerosol generating component 6 is housed in the third mounting groove 113. The cover 14 is placed on the side of the upper shell 11 facing away from the middle shell 12 and is used to cover or open the opening of the third mounting groove 113. The middle shell 12 has a receiving groove 122 communicating with the second mounting groove 133. The main board 5 is disposed on the bottom wall of the receiving groove 122. The battery 4 is housed in the receiving groove 122 and the second mounting groove 133. The main board 5 is electrically connected to the battery 4 and the aerosol generating component 6. The third mounting slot 113 provides a dedicated installation space for the aerosol generating component 6, ensuring its stable placement inside the device. The shape and size of the third mounting slot 113 match the aerosol generating component 6, tightly accommodating it while providing the necessary space for its operation. The aerosol generating component 6 is the core component of the device, used to generate aerosols. The cover 14 tightly covers the opening of the third mounting slot 113, preventing dust, liquids, and other external impurities from entering the installation space of the aerosol generating component 6 and protecting it from damage. The cover 14 can be designed to be detachable or movable, facilitating maintenance, replacement, or inspection of the aerosol generating component 6. A good seal can be achieved between the cover 14 and the upper shell 11 through a sealing ring or other sealing structure, further improving the waterproof performance of the device. The container 122 is connected to the second mounting slot 133. The main board 5 is located on the bottom wall of the container 122, and the battery 4 is housed in the container 122 and the second mounting slot 133. This design integrates the main board 5 and the battery 4 into the container 122 and the second mounting slot 133 of the middle shell 12, achieving a compact layout. The main board 5 is the control center of the device, responsible for controlling the operation of the aerosol generation component 6, the charging and discharging management of the battery 4, and other related functions. The battery 4 provides power to the device, ensuring that it can operate normally without an external power source. The installation position of the battery 4 is designed in the container 122 and the second mounting slot 133, which can make full use of space and facilitate replacement and maintenance.

[0031] For more details, please refer to Figure 2In one embodiment, the bottom wall of the receiving groove 122 is provided with a plurality of protrusions 123 spaced apart. The plurality of protrusions 123 enclose and accommodate the battery 4, so that a gap space is formed between the battery 4 and the main board 5. Each protrusion 123 has a limiting part 124, and each limiting part 124 abuts against the end of the battery 4 for limiting. The bottom wall of the receiving groove 122 is provided with a plurality of protrusions 123 spaced apart, and the plurality of protrusions 123 form an enclosing structure. The number and position of the protrusions 123 are optimized according to the shape and size of the battery 4 to ensure that the battery 4 can be stably placed in the receiving groove 122. The protrusions 123 not only play a role in supporting the battery 4, but also provide additional fixation and protection for the battery 4 through the enclosing structure, preventing the battery 4 from shaking or shifting inside the device. The side of the protrusion 123 facing away from the bottom wall of the receiving groove 122 is set with an arc surface to adapt to the outer peripheral wall of the battery 4 and improve the stability of the battery 4 installation. The end of each protrusion 123 is provided with A limiting part 124 is provided, which abuts against and limits the end of the battery 4. The design of the limiting part 124 ensures that the battery 4 can be accurately aligned when placed and remains stable during use, preventing the battery 4 from shifting due to vibration or external force. The shape and size of the limiting part 124 are designed according to the end shape of the battery 4 to ensure good contact and limiting effect. Through the setting of the protrusion 123, a certain gap space is formed between the battery 4 and the motherboard 5, avoiding direct contact between the battery 4 and the motherboard 5, reducing the risk of damage to the motherboard 5 due to leakage or short circuit of the battery 4, and also facilitating heat dissipation. The design of the protrusion 123 and the limiting part 124 ensures that the battery 4 can be stably placed in the cavity 122, reducing the risk of battery 4 displacement due to external force or vibration and improving the operational stability of the device. By forming a gap between the battery 4 and the main board 5, direct contact between the battery 4 and the main board 5 is avoided, reducing the risk of damage to the main board 5 due to leakage or short circuit of the battery 4 and improving the safety of the device. The existence of the gap space is conducive to the heat dissipation generated by the battery 4 during operation, preventing heat accumulation from affecting the main board 5 or other components and extending the service life of the device. The design of the protrusion 123 and the limiting part 124 makes the installation of the battery 4 more convenient, reduces assembly steps, and improves assembly efficiency.

[0032] Please see Figure 2 , Figure 6 and Figure 7In one embodiment, the main board 5 is provided with a connector 51, and the side walls of the middle shell 12 and the upper shell 11 are provided with interconnected mounting holes 125. The outer peripheral wall of the connector 51 forms a first sealing part 52, which elastically abuts against the peripheral wall of the mounting hole 125 of the middle shell 12. The bottom wall of the receiving groove 122 is provided with a positioning post 126, and the aerosol generating device 100 includes a second fastener 127, which passes through the main board 5 and the positioning post 126 to connect the main board 5 to the bottom wall of the receiving groove 122. The connector 51 on the motherboard 5 is used to connect to external devices or power sources to achieve power transmission or signal transmission. The outer peripheral wall of the connector 51 forms a first sealing part 52. The first sealing part 52 can be a sealing structure made of rubber sealing ring or other elastic material. When the connector 51 is inserted into the mounting hole 125 of the middle shell 12 and the upper shell 11, the first sealing part 52 elastically abuts against the peripheral wall of the mounting hole 125 to form a seal, which can effectively prevent liquid or dust from entering the device through the gap between the connector 51 and the mounting hole 125, thereby improving the waterproof and dustproof performance of the device. The bottom wall of the container 122 is provided with a positioning post 126, which is used to align with the mounting hole 125 on the main board 5 to ensure that the main board 5 can be accurately installed on the bottom wall of the container 122. A second fastener 127 (such as a screw or bolt) passes through the main board 5 and the positioning post 126 to firmly fix the main board 5 to the bottom wall of the container 122, which improves the installation stability of the main board 5 and facilitates the disassembly and maintenance of the main board 5. At the same time, the setting of the positioning post 126 creates a gap between the bottom wall of the container 122 and the main board 5, which is conducive to the heat dissipation generated by the main board 5 during operation, avoids heat accumulation that may affect the main board 5 or other components, and extends the service life of the device.

[0033] Please see Figure 1 , Figure 6 and Figure 8In one embodiment, the aerosol generating device 100 further includes a flexible circuit board 7 and a sealing sleeve 8. The flexible circuit board 7 has a first connecting portion 71 and a second connecting portion 72. The first connecting portion 71 is electrically connected to the main board 5. The second connecting portion 72 is provided with a plurality of spring pins 73. The second connecting portion 72 passes through the bottom wall of the receiving groove 122. The plurality of spring pins 73 pass through the side wall of the third mounting groove 113 and are electrically connected to the aerosol generating component 6. The sealing sleeve 8 is sleeved on the second connecting portion 72 of the flexible circuit board 7, and the spring pins 73 are exposed in the sealing sleeve 8. The first connecting part 71 is electrically connected to the main board 5, ensuring that the flexible circuit board 7 can receive control signals and power supply from the main board 5. The second connecting part 72 is provided with multiple spring pins 73, which are used to make electrical connections with the aerosol generating component 6. The design of the spring pins 73 makes the connection between the flexible circuit board 7 and the aerosol generating component 6 more flexible and reliable, and can achieve a stable electrical connection even when the internal space of the device is limited. The second connecting part 72 of the flexible circuit board 7 passes through the bottom wall of the accommodating groove 122, so that the spring pins 73 can extend into the third mounting groove 113 where the aerosol generating component 6 is located. Multiple spring pins 73 are inserted through the side wall of the third mounting groove 113 and are electrically connected to the aerosol generating component 6, so that the aerosol generating component 6 can receive control signals and power supply from the main board 5 through the flexible circuit board 7 and achieve normal operation. The sealing sleeve 8 is made of flexible material and can tightly wrap the second connection part 72 of the flexible circuit board 7 to prevent liquid or dust from entering the device and protect the spring pin 73 from the influence of the external environment. The sealing sleeve 8 is designed so that the spring pin 73 can be exposed from its surface to ensure that the spring pin 73 can make reliable contact with the electrode of the aerosol generating component 6 without affecting the sealing performance.

[0034] Please see Figure 8In one embodiment, the bottom wall of the receiving groove 122 is provided with a through hole 128, the sealing sleeve 8 has a second sealing part 81, the second sealing part 81 is provided with a slot 82 along its circumference, and the periphery of the through hole 128 is located within the slot 82; an installation space is formed between the side wall of the third mounting groove 113 and the side wall of the upper shell 11, the aerosol generating device 100 includes a mounting block 9, the mounting block 9 is connected to the upper shell 11, and a portion of the structure of the second connecting part 72 is located between the side wall of the third mounting groove 113 and the mounting block 9. The second sealing part 81 of the sealing sleeve 8 has a groove 82 along its circumference. The shape and size of the groove 82 match the periphery of the through hole 128. When the sealing sleeve 8 is installed in place, the periphery of the through hole 128 is locked within the groove 82, forming a tight sealing structure. This ensures that the second connecting part 72 of the flexible circuit board 7 can be firmly fixed within the through hole 128. Furthermore, the tight fit between the second sealing part 81 and the through hole 128 prevents liquid or dust from entering the device through the through hole 128, further improving the sealing performance of the device. The mounting block 9 is connected to the upper shell 11 and is used to fix the second connecting part 72 of the flexible circuit board 7. The design of the mounting block 9 allows part of the structure of the second connecting part 72 to be confined between the side wall of the third mounting groove 113 and the mounting block 9, ensuring that the flexible circuit board 7 will not shift due to vibration or external force during use. Through the fixing action of the mounting block 9, the second connecting part 72 of the flexible circuit board 7 can remain stable, and the electrical connection with the aerosol generating component 6 is also more reliable.

[0035] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An aerosol-generating device, characterized by, include: The housing includes an upper shell, a middle shell, and a lower shell. The upper shell is partially fitted onto the lower shell, and the middle shell is housed within the lower shell and located at the joint between the upper shell and the lower shell. A sealing ring, wherein the sealing ring is fitted onto the middle shell and elastically abuts against the inner peripheral wall of the lower shell; and A plurality of first fasteners are arranged at intervals along the two side walls of the housing along its length direction and are sequentially inserted into the upper shell, the lower shell, and the middle shell to connect the upper shell, the lower shell, and the middle shell.

2. The aerosol generating apparatus as described in claim 1, characterized in that, The lower shell has multiple connecting plates spaced apart on its opposite side walls. The multiple connecting plates are located between the middle shell and the upper shell. Each of the first fasteners passes through the upper shell, one of the connecting plates, and the middle shell.

3. The aerosol generating apparatus as described in claim 1, characterized in that, A limiting step is formed along the circumference of the side of the lower shell facing the upper shell, and the end of the upper shell near the lower shell abuts against the limiting step for limitation.

4. The aerosol generating apparatus as described in claim 1, characterized in that, The two opposite side walls of the middle shell are provided with a plurality of fastening grooves, and each of the first fasteners includes a threaded bolt and a nut, with each nut being accommodated in one of the fastening grooves.

5. The aerosol generating apparatus according to any one of claims 1 to 4, characterized in that, The upper shell has a first mounting groove. Along the length of the upper shell, multiple first snap-fit ​​portions are spaced apart on opposite side walls of the first mounting groove. The lower shell has multiple first mating portions spaced apart on both side walls along its length. Each first snap-fit ​​portion engages with a first mating portion to connect the upper shell and the lower shell; and / or The lower shell has a second mounting groove. Along the length of the lower shell, the two opposite side walls of the second mounting groove are provided with a plurality of second snap-fit ​​parts at intervals. The middle shell is provided with a plurality of second mating parts at intervals along the two side walls of the middle shell. Each second snap-fit ​​part snaps into a second mating part to connect the lower shell and the middle shell.

6. The aerosol generating apparatus as described in claim 5, characterized in that, The aerosol generating device includes a cover, a battery, a mainboard, and an aerosol generating component. The upper shell is recessed towards the middle shell to form a third mounting groove. The aerosol generating component is housed in the third mounting groove. The cover is placed on the side of the upper shell facing away from the middle shell and is used to cover or open the opening of the third mounting groove. The middle shell has a receiving groove communicating with the second mounting groove. The mainboard is disposed on the bottom wall of the receiving groove. The battery is housed in the receiving groove and the second mounting groove. The mainboard is electrically connected to the battery and the aerosol generating component.

7. The aerosol generating apparatus as described in claim 6, characterized in that, The bottom wall of the accommodating groove is provided with a plurality of protrusions at intervals, and the plurality of protrusions surround and accommodate the battery so that a gap space is formed between the battery and the motherboard; each of the protrusions has a limiting part, and each limiting part abuts against and limits the end of the battery.

8. The aerosol generating apparatus as described in claim 6, characterized in that, The motherboard is provided with a connector, and the side walls of the middle shell and the upper shell are each provided with interconnecting mounting holes. A first sealing portion is formed on the outer peripheral wall of the connector, and the first sealing portion elastically abuts against the peripheral wall of the mounting hole in the middle shell; and / or The bottom wall of the container is provided with a positioning post, and the aerosol generating device includes a second fastener, which passes through the main board and the positioning post to connect the main board to the bottom wall of the container.

9. The aerosol generating apparatus as described in claim 6, characterized in that, The aerosol generating device further includes a flexible circuit board and a sealing sleeve. The flexible circuit board has a first connecting portion and a second connecting portion. The first connecting portion is electrically connected to the main board. The second connecting portion is provided with a plurality of spring pins. The second connecting portion passes through the bottom wall of the receiving groove. The plurality of spring pins pass through the side wall of the third mounting groove and are electrically connected to the aerosol generating component. The sealing sleeve is fitted onto the second connecting portion of the flexible circuit board, and the spring pins are exposed in the sealing sleeve.

10. The aerosol generating apparatus as described in claim 9, characterized in that, The bottom wall of the receiving groove has a through hole, and the sealing sleeve has a second sealing part. The second sealing part has a groove along its circumference, and the periphery of the through hole is engaged and limited within the groove; and / or An installation space is formed between the sidewall of the third mounting groove and the sidewall of the upper shell. The aerosol generating device includes a mounting block, which is connected to the upper shell. A portion of the structure of the second connection part is located between the sidewall of the third mounting groove and the mounting block.

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