Sealing structure of liquid storage assembly, liquid storage assembly, and aerosol-generating device

Abstract

This application provides a sealing structure for a liquid storage component, a liquid storage component, and an aerosol generating device, belonging to the field of aerosol generating devices. The sealing structure includes a bottom cover and a sealing element. The bottom cover includes a mating portion, a receiving groove on a first side of the mating portion, and a insertion hole at the bottom of the receiving groove. The sealing element includes a first sealing portion located in the receiving groove, having a through hole communicating with the insertion hole. A first annular sealing rib is provided on the wall of the through hole. The cross-section of the first annular sealing rib is trapezoidal, with the lower base of the trapezoid close to the wall of the through hole and the upper base close to the axis of the through hole. The trapezoidal cross-section of the first annular sealing rib provides stronger resistance to tearing and strain, making it less prone to damage during demolding or assembly / disassembly with or separation from the atomizer, thereby reducing seal breakage and lowering the risk of leakage.

Description

Technical Field

[0001] This application relates to the field of aerosol generating devices, and particularly to a sealing structure for a liquid storage component, a liquid storage component, and an aerosol generating device. Background Technology

[0002] Some aerosol generating devices include an atomizer and a replaceable reservoir assembly, which provides the aerosol matrix to the atomizer.

[0003] The liquid storage assembly includes a housing and a bottom cover, with the bottom cover connected to the housing to form a liquid storage chamber. To prevent leakage, the bottom cover is equipped with a seal, such as at the connection between the bottom cover and the atomizer.

[0004] Currently, it has been found that the seals on the bottom cover are prone to damage, leading to leaks at the seal. Utility Model Content

[0005] This application provides a sealing structure for a liquid storage component, a liquid storage component, and an aerosol generating device, which helps to reduce the damage of seals and lower the risk of leakage. The technical solution is as follows:

[0006] In a first aspect, embodiments of this application provide a sealing structure for a liquid storage component. The sealing structure includes a bottom cover and a sealing element. The bottom cover includes a mating portion, and a receiving groove is provided on a first side of the mating portion. The bottom of the receiving groove has an insertion hole. The sealing element includes a first sealing portion located in the receiving groove. The first sealing portion has a through hole communicating with the insertion hole. A first annular sealing rib is provided on the wall of the through hole. The cross-section of the first annular sealing rib is trapezoidal, with the lower base of the trapezoid close to the wall of the through hole and the upper base of the trapezoid close to the axis of the through hole.

[0007] In some examples, the trapezoid is an isosceles trapezoid.

[0008] In some examples, the lower base angle of the trapezoid is 65° to 75°.

[0009] In some examples, the lower base angle of the trapezoid is 70°.

[0010] In some examples, the waist of the trapezoid is connected to the wall of the through hole by a rounded corner.

[0011] In some examples, the bottom of the receiving groove has a plurality of insertion holes, the first sealing part has a plurality of through holes, the through holes are provided in a one-to-one correspondence with the insertion holes, and the wall of each through hole is provided with the first annular sealing rib.

[0012] In some examples, the plurality of said plug holes include a first plug hole, a second plug hole, and a third plug hole, wherein the second plug hole and the third plug hole are symmetrically distributed about the center of the first plug hole;

[0013] The plurality of through holes include a first through hole, a second through hole and a third through hole, wherein the first through hole communicates with the first insertion hole, the second through hole communicates with the second insertion hole, and the third through hole communicates with the third insertion hole.

[0014] In some examples, the inner wall of the receiving groove has two arc-shaped grooves, one of which is located on the side of the second insertion hole away from the first insertion hole, and the other of which is located on the side of the third insertion hole away from the first insertion hole, and the arc-shaped grooves extend along the depth direction of the receiving groove.

[0015] The outer wall of the first sealing part has two arc-shaped protrusions, which are distributed one-to-one in the two arc-shaped grooves.

[0016] In some examples, the bottom cover further includes a first annular portion connected to a second side opposite to the mating portion;

[0017] The sealing element further includes a second sealing portion located on the outer wall of the first annular portion. The outer wall of the second sealing portion has a second annular sealing rib, and the cross-section of the second annular sealing rib is arc-shaped or trapezoidal.

[0018] In some examples, the seal is injection molded onto the bottom cover;

[0019] The docking portion has a first channel, which is located outside the first annular portion and is connected to the receiving groove.

[0020] The sealing element further includes a first connecting portion, one end of which is connected to the second sealing portion, and the other end of which passes through the first channel and is connected to the first sealing portion.

[0021] In some examples, the bottom of the receiving groove is provided with a plurality of protrusions, which are inserted into the first sealing part.

[0022] Secondly, embodiments of this application also provide a liquid storage assembly, the liquid storage assembly including a housing portion and any of the sealing structures described in the first aspect, one end of the housing portion having an opening, and the bottom cover being located in the opening.

[0023] Thirdly, embodiments of this application also provide an aerosol generating device, the aerosol generating device including an atomizer and any of the liquid storage components as described in the second aspect, the liquid storage component being connected to the atomizer and used to provide an aerosol matrix to the atomizer.

[0024] The beneficial effects of the technical solutions provided in this application include at least the following:

[0025] By setting a seal on the bottom cover, the first sealing part of the seal is set in the receiving groove of the mating part of the bottom cover. The through hole of the first sealing part communicates with the insertion hole of the mating part. A first annular sealing rib is provided on the wall of the through hole, so that when the liquid storage component is assembled with the atomizer, the part of the atomizer inserted into the insertion hole can form a seal with the first sealing part. Since the cross-section of the first annular sealing rib is trapezoidal, it has a stronger resistance to tearing and tearing. Therefore, the first annular sealing rib is not easily damaged during the demolding process when manufacturing the seal. The first annular sealing rib is also not easily damaged during the assembly or separation of the atomizer and the sealing structure, which helps to reduce the damage of the seal and reduce the risk of leakage. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the structure of an atomizer provided in an embodiment of this application;

[0029] Figure 3 This is an exploded structural diagram of a liquid storage component provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram illustrating the cooperation between a sealing structure and an atomizer provided in an embodiment of this application;

[0031] Figure 5 This is a partial structural diagram of a sealing element;

[0032] Figure 6 This is a schematic diagram of the structure of a bottom cover provided in an embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the assembly of a bottom cover and a sealing element provided in an embodiment of this application;

[0034] Figure 8 This is a cross-sectional schematic diagram of a sealing element provided in an embodiment of this application;

[0035] Figure 9 yes Figure 8 Enlarged diagram of point A in the diagram;

[0036] Figure 10 This is a schematic diagram of the structure of a bottom cover provided in an embodiment of this application;

[0037] Figure 11 This is a schematic diagram of an aerosol generating device provided in an embodiment of this application.

[0038] Icon labels:

[0039] 100-Liquid storage assembly, 10-Housing portion, 20-Sealing structure, 21-Bottom cover, 21a-Insertion hole, 21b-Annular sealing rib, 211-Mating portion, 2111-Protrusion, 211a-Receiving groove, 211b-First insertion hole, 211c-Second insertion hole, 211d-Third insertion hole, 211e-First channel, 211f-Second strip groove, 211g-Arc groove, 212-Second annular portion, 213-First annular portion, 213b-First strip groove, 22-Sealing element, 22a-Through hole, 221-Third sealing portion, 222-Second sealing portion, 2221-First protruding ridge, 2222-Second annular sealing rib 223-First sealing part, 2231-Second protruding ridge, 2232-Arc-shaped protrusion, 2233-First annular sealing rib, 2233a-Rounded corner, 223a-First through hole, 223b-Second through hole, 223c-Third through hole, 231-Second connecting part, 232-First connecting part, 300-Atomizer, 311-Atomizer housing, 312-Liquid inlet pipe, 313-Exhaust pipe, 314-First aerosol discharge pipe, 320-Atomizing assembly, 320a-Atomizing channel, 321-Bracket, 322-Liquid guide, 323-Heating element, 324-Pin, 400-Nose, 401-Second aerosol discharge pipe; α-Lower bottom corner. Detailed Implementation

[0040] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0041] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized. "A plurality" means two or more.

[0046] Figure 1 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application, as shown below. Figure 1 As shown, the aerosol generating device includes a liquid storage assembly 100 and an atomizer 300. The liquid storage assembly 100 is used to provide an aerosol matrix to the atomizer 300.

[0047] Figure 2 This is a schematic diagram of the structure of an atomizer provided in an embodiment of this application, as shown below. Figure 2As shown, the atomizer 300 includes an atomizer housing 311. One end of the atomizer housing 311 is provided with a liquid inlet pipe 312, an exhaust pipe 313, and a first aerosol discharge pipe 314. The liquid inlet pipe 312 and the exhaust pipe 313 are used to connect to the liquid storage chamber of the liquid storage assembly 100. The aerosol matrix in the liquid storage assembly 100 can enter the atomizer 300 through the liquid inlet pipe 312, while the air in the atomizer 300 enters the liquid storage assembly 100 through the exhaust pipe 313 to maintain the pressure balance in the liquid storage assembly 100. The first aerosol discharge pipe 314 is connected to the liquid storage assembly 100. The aerosol discharged from the first aerosol discharge pipe 314 passes through the liquid storage assembly 100 and is discharged from the mouthpiece 400. The mouthpiece 400 can be detachably connected to the liquid storage assembly 100, or the mouthpiece 400 can be an integral part of the liquid storage assembly 100.

[0048] Figure 3 This is an exploded structural diagram of a liquid storage component provided in an embodiment of this application, as shown below. Figure 3 As shown, the liquid storage assembly 100 may include a housing portion 10 and a sealing structure 20. One end of the housing portion 10 has an opening. The sealing structure 20 includes a bottom cover 21 and a seal 22. The bottom cover 21 is located in the opening and forms a liquid storage chamber with the housing portion 10. The seal 22 is disposed on the bottom cover 21.

[0049] Figure 4 This is a schematic diagram illustrating the cooperation between a sealing structure and an atomizer according to an embodiment of this application. Figure 4 As shown, when the atomizer 300 is assembled with the liquid storage assembly 100, the liquid inlet pipe 312, the exhaust pipe 313 and the first aerosol discharge pipe 314 pass through the through hole 22a of the seal 22 and are then inserted into the insertion hole 21a of the bottom cover 21.

[0050] Figure 5 This is a schematic diagram of a partial structure of a sealing element, such as... Figure 5 As shown, an annular sealing rib 21b is provided on the wall of the through hole 22a. The seal 22 abuts against the surface of the atomizer 300 through the annular sealing rib 21b to form an interference fit.

[0051] The seal 22 is typically manufactured using injection molding. During demolding, the annular sealing rib 21b is compressed between itself and the mold. The seal 22 is also subjected to compression during assembly and disassembly from the atomizer 300. The annular sealing rib 21b experiences significant radial outward forces and axial forces during compression. The cross-section of the annular sealing rib 21b is typically arc-shaped, with the portion of the cross-section that abuts against the atomizer 300 being an arc. Analysis reveals stress concentration in the arc-shaped annular sealing rib 21b during demolding or assembly and disassembly from the atomizer 300. In seals 22 requiring a larger interference fit to improve sealing performance, the annular sealing rib 21b typically protrudes more than the bore wall, resulting in more pronounced stress concentration. During the demolding or assembly / separation process with the atomizer 300, severe stress concentration may cause the annular sealing rib 21b to be torn or strained, resulting in damage to the seal 22, thereby affecting the sealing performance and causing leakage.

[0052] To reduce the risk of leakage and minimize damage to the seal 22, this application provides a sealing structure for a liquid storage assembly. For example... Figure 3 As shown, the sealing structure 20 includes a bottom cover 21 and a seal 22. Figure 6 This is a schematic diagram of the structure of a bottom cover provided in an embodiment of this application, as shown below. Figure 6 As shown, the bottom cover 21 includes a docking part 211, and a receiving groove 211a is provided on the first side of the docking part 211. The bottom of the receiving groove 211a has a plug hole 21a.

[0053] Figure 7 This is a schematic diagram of the assembly of a bottom cover and a sealing element provided in an embodiment of this application, as shown below. Figure 7 As shown, the seal 22 includes a first sealing portion 223, which is located in the receiving groove 211a. The first sealing portion 223 has a through hole 22a that communicates with the insertion hole 21a. The wall of the through hole 22a is provided with a first annular sealing rib 2233.

[0054] For example, the through hole 22a can be aligned with the insertion hole 21a.

[0055] Figure 8 This is a cross-sectional schematic diagram of a sealing element provided in an embodiment of this application. Figure 9 yes Figure 8 An enlarged diagram of point A in the diagram, as shown below. Figure 9 As shown, the cross-section of the first annular sealing rib 2233 is trapezoidal, with the lower base of the trapezoid close to the wall of the through hole 22a and the upper base of the trapezoid close to the axis of the through hole 22a.

[0056] The cross section of the first annular sealing rib 2233 is the axial cross section of the first annular sealing rib 2233, and the plane containing the axial cross section passes through the axis of the first annular sealing rib 2233.

[0057] By providing a sealing element 22 on the bottom cover 21, the first sealing part 223 of the sealing element 22 is provided in the receiving groove 211a of the docking part 211 of the bottom cover 21. The through hole 22a of the first sealing part 223 communicates with the insertion hole 21a of the docking part 211. A first annular sealing rib 2233 is provided on the hole wall of the through hole 22a, so that when the liquid storage assembly 100 is assembled with the atomizer 300, the part of the atomizer 300 inserted into the insertion hole 21a can form a seal with the first sealing part 223.

[0058] Because the first annular sealing rib 2233 has a trapezoidal cross-section, during demolding or assembly / separation from the atomizer 300, the trapezoidal cross-section results in less stress on the first annular sealing rib 2233, strengthening its resistance to tearing and tensile damage. Through finite element simulation analysis and experimental testing, with an interference fit of 0.35mm, the stress on the trapezoidal cross-section of the first annular sealing rib 2233 is reduced by approximately 10% compared to the case of a circular cross-section. Therefore, the first annular sealing rib is less prone to damage during demolding when manufacturing the seal; it is also less likely to be damaged when assembling or separating the atomizer 300 from the sealing structure 20, thus reducing the risk of damage to the seal 22 and lowering the risk of leakage.

[0059] In some examples, the cross-section of the first annular sealing rib 2233 can be an isosceles trapezoid.

[0060] The isosceles trapezoidal structure is more symmetrical, and the stress distribution is more uniform when subjected to compression, resulting in a lower risk of damage to the first annular sealing rib 2233.

[0061] The lower base of the trapezoidal cross-section is close to the wall of the through hole 22a. The size of the lower base angle α formed by the waist of the trapezoid and the lower base also affects the stress distribution. In some examples, the lower base angle α of the trapezoid can be 65°~75°. Setting the lower base angle α in the range of 65°~75° ensures that the aspect ratio of the trapezoid meets the design requirements. This avoids the first annular sealing rib 2233 being too wide while ensuring the height of its protrusion relative to the hole wall meets the interference requirement. Simultaneously, it avoids the lower base angle α being too large, which could lead to excessive stress at the connection between the first annular sealing rib 2233 and the hole wall.

[0062] The height-to-width ratio of a trapezoid can refer to the ratio of its height to its width. The height of a trapezoid is the length of the perpendicular line segment between its upper and lower bases, and the width is the length of the line segment connecting the midpoints of its two legs, which is also the length of its median. The width of the first annular sealing rib 2233 can also refer to the length of the median of the trapezoid.

[0063] As an example, the lower base angle α of the trapezoid can be 70°. With the lower base angle α set to 70°, the risk of significant tearing on the surface of the first annular sealing rib 2233 is low, and the risk of leakage of the seal 22 is low.

[0064] like Figure 9 As shown, the waist of the trapezoid is connected to the wall of the through hole 22a by fillet 2233a.

[0065] By setting a rounded corner 2233a to make the transition between the waist of the trapezoid and the hole wall smooth, the stress at the connection between the first annular sealing rib 2233 and the hole wall can be further reduced, thus avoiding damage to the first annular sealing rib 2233.

[0066] like Figure 6 As shown, the bottom of the receiving groove 211a can have multiple insertion holes 21a, such as... Figure 8 As shown, the first sealing part 223 has a plurality of through holes 22a, and the through holes 22a are provided in a one-to-one correspondence with the insertion holes 21a. Each through hole 22a has a first annular sealing rib 2233 on its hole wall.

[0067] A first annular sealing rib 2233 with a trapezoidal cross section is provided in each through hole 22a corresponding to each insertion hole 21a, so that each through hole 22a has good sealing performance and reduces the risk of sealing failure at the through hole 22a.

[0068] In some examples, refer to Figure 6 As shown, the plurality of insertion holes 21a of the docking part 211 may include a first insertion hole 211b, a second insertion hole 211c and a third insertion hole 211d.

[0069] The first aerosol discharge pipe 314 can be inserted into the first insertion hole 211b, the liquid inlet pipe 312 can be inserted into the second insertion hole 211c, and the exhaust pipe 313 can be inserted into the third insertion hole 211d.

[0070] As an example, the second insertion hole 211c and the third insertion hole 211d can be symmetrically distributed about the center of the first insertion hole 211b, thereby making it easier to assemble the liquid storage assembly 100 with the atomizer 300.

[0071] When assembling the liquid storage assembly 100 and the atomizer 300, the liquid inlet pipe 312 can also be inserted into the third insertion hole 211d, and the exhaust pipe 313 can also be inserted into the second insertion hole 211c. That is to say, even if the atomizer 300 is rotated 180° and the positions of the liquid inlet pipe 312 and the exhaust pipe 313 are reversed, the liquid storage assembly 100 and the atomizer 300 can still be assembled normally.

[0072] like Figure 7 As shown, the first sealing part 223 has a first through hole 223a, a second through hole 223b, and a third through hole 223c. The first through hole 223a communicates with the first insertion hole 211b, the second through hole 223b communicates with the second insertion hole 211c, and the third through hole 223c communicates with the third insertion hole 211d.

[0073] For example, the first through hole 223a, the second through hole 223b, and the third through hole 223c can be aligned with the first insertion hole 211b, the second insertion hole 211c, and the third insertion hole 211d, respectively.

[0074] When assembling the atomizer 300 and the liquid storage assembly 100, the first aerosol discharge pipe 314 can be inserted into the first through hole 223a to form a seal with the first sealing part 223; the liquid inlet pipe 312 can be inserted into the second through hole 223b to form a seal with the first sealing part 223; and the exhaust pipe 313 can be inserted into the third through hole 223c to form a seal with the first sealing part 223.

[0075] The inner walls of the first through hole 223a, the second through hole 223b and the third through hole 223c are all provided with sealing ribs, which can improve the sealing performance of the seal 22.

[0076] like Figure 6 As shown, the inner wall of the receiving groove 211a also has two arc-shaped grooves 211g. One of the two arc-shaped grooves 211g is located on the side of the second insertion hole 211c away from the first insertion hole 211b, and the other arc-shaped groove 211g is located on the side of the third insertion hole 211d away from the first insertion hole 211b. The arc-shaped grooves 211g extend along the depth direction of the receiving groove 211a. Figure 7 As shown, the outer wall of the first sealing part 223 has two arc-shaped protrusions 2232, which are distributed one-to-one in the two arc-shaped grooves 211g.

[0077] Because the first sealing part 223 is provided with a first insertion hole 211b, a second insertion hole 211c, and a third insertion hole 211d, the space of the first sealing part 223 is limited, resulting in a small material thickness between the edge of the first insertion hole 211b and the inner wall of the receiving groove 211a, and a small material thickness between the edge of the third insertion hole 211d and the inner wall of the receiving groove 211a. This leads to relatively low structural strength and relatively poor sealing performance. Providing an arc-shaped protrusion 2232, which fits into the arc-shaped groove 211g, effectively increases the local material thickness of the first sealing part 223, thus improving structural strength and the sealing performance of the local area.

[0078] like Figure 7 As shown, the bottom of the receiving groove 211a may also be provided with multiple protrusions 2111. The multiple protrusions 2111 are inserted into the first sealing part 223.

[0079] The protrusion 2111 inserted into the first sealing part 223 not only increases the contact area between the first sealing part 223 and the bottom cover 21, making the first sealing part 223 more secure within the receiving groove 211a, but also disperses the pressure when material is injected into the receiving groove 211a during injection molding, avoiding excessive local stress. Furthermore, the protrusion 2111 provides support for the first sealing part 223, preventing it from becoming loose from the sidewall or bottom of the receiving groove 211a due to external forces, thus improving the overall structural strength of the sealing structure.

[0080] like Figure 7 As shown, the bottom cover 21 may further include a first annular portion 213 and a second annular portion 212. The first annular portion 213 and the second annular portion 212 are connected to the opposite second sides of the mating portion 211, with the first annular portion 213 surrounding the second annular portion 212. The first side and the second side are two sides opposite to each other in the axial direction of the mating portion 211.

[0081] The first insertion hole 211b communicates with the second annular portion 212. The second insertion hole 211c and the third insertion hole 211d are located between the first annular portion 213 and the second annular portion 212.

[0082] The docking part 211 is used to connect with the atomizer 300, and the first annular part 213 is used to mate with the inner side wall of the housing part 10 so that the bottom cover 21 and the housing part 10 are assembled as one unit. The second annular part 212 is used to connect to the mouthpiece 400 so that the aerosol released by the atomizer 300 can pass through the liquid storage assembly 100.

[0083] The housing portion 10 may have a suction nozzle 400 integrally formed at one end away from its opening. The housing portion 10 may also be provided with a second aerosol discharge pipe 401, one end of which is connected to the suction nozzle 400, and the other end is used to connect to the second annular portion 212.

[0084] like Figure 7 As shown, the seal 22 further includes a second sealing portion 222. The second sealing portion 222 is located on the outer wall of the first annular portion 213, and the outer wall of the second sealing portion 222 has a second annular sealing rib 2222, the cross-section of which is arc-shaped or trapezoidal. The second sealing portion 222 seals the gap between the first annular portion 213 and the housing portion 10.

[0085] Compared to the first annular sealing rib 2233, the second annular sealing rib 2222 experiences radial inward compression during demolding or assembly with the housing portion 10. Since the radial inward compression force results in a lower risk of tearing or straining of the second annular sealing rib 2222, its cross-section can be set to an arc shape. Setting the cross-section of the second annular sealing rib 2222 to a trapezoidal shape can also improve the stress on the second annular sealing rib 2222. When the second annular sealing rib 2222 protrudes significantly from the outer wall of the second sealing portion 222, a trapezoidal cross-section can reduce the risk of damage to the second annular sealing rib 2222.

[0086] In some examples, the seal 22 can be injection molded onto the bottom cover 21. Figure 10 This is a schematic diagram of the structure of a bottom cover provided in an embodiment of this application, as shown below. Figure 10 As shown, the docking portion 211 has a first channel 211e, which is located outside the first annular portion 213. The first channel 211e communicates with the receiving groove 211a. (Refer to...) Figure 8 As shown, the seal 22 also includes a first connecting part 232, one end of which is connected to the second sealing part 222, and the other end of which passes through the first channel 211e and is connected to the first sealing part 223.

[0087] The sealing element 22 is formed onto the bottom cover 21 by injection molding, so that the first sealing part 223 and the second sealing part 222 are connected as one unit through the first connecting part 232. This eliminates the need to separately manufacture the first sealing part 223 and the second sealing part 222 and then assemble them with the bottom cover 21, which helps to improve production efficiency and avoid damage to the sealing element.

[0088] The first sealing part 223 and the second sealing part 222 are arranged at different positions on the bottom cover 21. By providing a first channel 211e that penetrates the mating part 211, when the seal 22 is manufactured using injection molding, the material can flow through the first channel 211e from the location of the second sealing part 222 to the location of the first sealing part 223, or from the location of the first sealing part 223 to the location of the second sealing part 222. The first channel 211e can guide the flow of material, facilitating the formation of the seal 22.

[0089] There can be multiple first channels 211e, which can be distributed circumferentially along the first annular portion 213. Multiple first connecting portions 232 connect the first sealing portion 223 and the second sealing portion 222, and these first connecting portions 232 are distributed circumferentially along the first annular portion 213. Providing multiple first channels 211e and forming multiple first connecting portions 232 facilitates material flow during injection molding and improves the yield of the sealing component 22 in the injection molding process.

[0090] For example, in this example, the docking part 211 has four first channels 211e, which are arranged at 90° intervals. Arranging multiple first channels 211e in a symmetrical manner is more conducive to material flow and improves the uniformity of material distribution.

[0091] like Figure 10 As shown, the outer wall of the first annular portion 213 has a first strip groove 213b, which extends axially along the first annular portion 213 to communicate with the first channel 211e. Figure 8 As shown, the inner wall of the second sealing part 222 has a first protruding ridge 2221, which is located in the first strip groove 213b and is connected to the first connecting part 232.

[0092] During injection molding, material can flow along the first groove 213b. The first ridge 2221 effectively increases the thickness of a local area of ​​the second sealing portion 222, facilitating material flow and promoting the formation of a uniformly distributed material in the second sealing portion 222. The first ridge 2221 is also connected to the first connecting portion 232, which helps material flow from the location of the second sealing portion 222 to the location of the first sealing portion 223 or vice versa. Furthermore, the first ridge 2221 and the first groove 213b can increase the contact area between the second sealing portion 222 and the first annular portion 213, making the connection between the second sealing portion 222 and the first annular portion 213 tighter.

[0093] Reference Figure 7 As shown, the inner wall of the receiving groove 211a may have a second strip groove 211f, which extends along the depth direction of the receiving groove 211a to communicate with the first channel 211e. The outer wall of the first sealing part 223 has a second protruding ridge 2231, which is located in the second strip groove 211f and is connected to the first connecting part 232.

[0094] During injection molding, the material can flow along the second groove 211f. The second ridge 2231 effectively increases the thickness of a local area of ​​the first sealing portion 223, facilitating material flow and promoting the formation of a uniformly distributed material in the first sealing portion 223. The second ridge 2231 is also connected to the first connecting portion 232, facilitating material flow from the location of the second sealing portion 222 to the location of the first sealing portion 223 or vice versa. Furthermore, the second ridge 2231 and the second groove 211f can increase the contact area between the first sealing portion 223 and the mating portion 211, resulting in a tighter connection between them.

[0095] Figure 11 This is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of this application, as shown below. Figure 11 As shown, the atomizer 300 also includes an atomizer housing 311 and an atomizing component 320. The aerosol matrix entering the atomizer 300 from the liquid storage component 100 can be stored in the atomizer housing 311. The atomizing component 320 is located in the atomizer housing 311 and is used to heat the aerosol matrix to form an aerosol. The atomizing component 320 has an atomizing channel 320a.

[0096] During the operation of the aerosol generating device, the atomizing component 320 gradually consumes the aerosol matrix within the atomizer housing 311. When the user inhales, the air pressure inside the atomizer housing 311 decreases. Under this pressure, the aerosol matrix in the liquid storage component 100 enters the atomizer housing 311 through the inlet pipe 312, replenishing the aerosol matrix within the atomizer housing 311. Simultaneously, air in the atomizer housing 311 flows into the liquid storage component 100 through the exhaust pipe 313.

[0097] The liquid inlet pipe 312, the exhaust pipe 313 and the first aerosol discharge pipe 314 can be located at the same end of the atomizer housing 311. An electrode can also be provided at the other end of the atomizer housing 311, and the electrode is electrically connected to the atomizing component 320.

[0098] The atomizer housing 311 of the atomizer 300 may also include a liquid reservoir 216. The atomizing assembly 320 may be inserted into the liquid reservoir 216.

[0099] As an example, the atomizing assembly 320 may include a support 321, a liquid guide 322, a heating element 323, and a pin 324. The support 321 forms an atomizing channel 320a, and the liquid guide 322 and the heating element 323 are located within the support 321. The heating element 323 may be connected to the pin 324, and electrically connected to an electrode mounted at the end of the atomizer housing 311 via the pin 324.

[0100] The support 321 provides space inside the atomizer housing 311 to accommodate and support the liquid guide 322 and the heating element 323. The support 321 may be cylindrical, and its wall may have holes, slits, or other structures to allow the aerosol matrix in the atomizer housing 311 to enter the atomization channel 320a and be absorbed by the liquid guide 322. The heating element 323 heats the aerosol matrix in the liquid guide 322 to form an aerosol.

[0101] For example, the heating element 323 may be made of one or more of iron-chromium-aluminum alloy, nickel-chromium alloy, and stainless steel alloy, such as iron-chromium-aluminum material.

[0102] The material and structure of the heating element 323 are not limited, as long as it can generate heat. For example, the heating element 323 may include at least one of the following: heating mesh, heating film, heating wire, and heating plate.

[0103] For example, pin 324 may be made of nickel, such as Ni200. Pin 324 may be soldered to heating element 323.

[0104] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A sealing structure for a liquid storage assembly, characterized in that, The device includes a bottom cover (21) and a sealing element (22). The bottom cover (21) includes a mating portion (211). A receiving groove (211a) is provided on the first side of the mating portion (211). The bottom of the receiving groove (211a) has a plug-in hole (21a). The sealing element (22) includes a first sealing portion (223). The first sealing portion (223) is located in the receiving groove (211a). The first sealing portion (223) has a through hole (22a). The through hole (22a) communicates with the plug-in hole (21a). A first annular sealing rib (2233) is provided on the hole wall of the through hole (22a). The cross section of the first annular sealing rib (2233) is trapezoidal. The lower base of the trapezoid is close to the hole wall of the through hole (22a), and the upper base of the trapezoid is close to the axis of the through hole (22a).

2. The sealing structure according to claim 1, characterized in that, The cross-section of the first annular sealing rib (2233) is an isosceles trapezoid.

3. The sealing structure according to claim 1, characterized in that, The lower base angle (α) of the trapezoid is 65°~75°.

4. The sealing structure according to claim 2, characterized in that, The lower base angle (α) of the trapezoid is 70°.

5. The sealing structure according to claim 1, characterized in that, The waist of the trapezoid is connected to the wall of the through hole (22a) by a fillet (2233a).

6. The sealing structure according to any one of claims 1 to 5, characterized in that, The bottom of the receiving groove (211a) has a plurality of insertion holes (21a), and the first sealing part (223) has a plurality of through holes (22a). The through holes (22a) are arranged in a one-to-one correspondence with the insertion holes (21a), and the wall of each through hole (22a) is provided with the first annular sealing rib (2233).

7. The sealing structure according to claim 6, characterized in that, The plurality of said plug holes (21a) include a first plug hole (211b), a second plug hole (211c) and a third plug hole (211d), wherein the second plug hole (211c) and the third plug hole (211d) are symmetrically distributed about the center of the first plug hole (211b); The plurality of through holes (22a) include a first through hole (223a), a second through hole (223b) and a third through hole (223c), wherein the first through hole (223a) communicates with the first insertion hole (211b), the second through hole (223b) communicates with the second insertion hole (211c) and the third through hole (223c) communicates with the third insertion hole (211d).

8. The sealing structure according to claim 7, characterized in that, The inner wall of the receiving groove (211a) has two arc-shaped grooves (211g). One of the two arc-shaped grooves (211g) is located on the side of the second insertion hole (211c) away from the first insertion hole (211b), and the other of the two arc-shaped grooves (211g) is located on the side of the third insertion hole (211d) away from the first insertion hole (211b). The arc-shaped grooves (211g) extend along the depth direction of the receiving groove (211a). The outer wall of the first sealing part (223) has two arc-shaped protrusions (2232), which are distributed one-to-one in the two arc-shaped grooves (211g).

9. The sealing structure according to any one of claims 1 to 5, 7 to 8, characterized in that, The bottom cover (21) also includes a first annular portion (213), which is connected to the second side of the docking portion (211) opposite to the first side; The sealing element (22) further includes a second sealing part (222), which is located on the outer wall of the first annular part (213). The outer wall of the second sealing part (222) has a second annular sealing rib (2222), and the cross section of the second annular sealing rib (2222) is arc-shaped or trapezoidal.

10. The sealing structure according to claim 9, characterized in that, The sealing element (22) is injection molded onto the bottom cover (21); The docking portion (211) has a first channel (211e), which is located outside the first annular portion (213) and communicates with the receiving groove (211a); The sealing element (22) further includes a first connecting part (232), one end of which is connected to the second sealing part (222), and the other end of which passes through the first channel (211e) and is connected to the first sealing part (223).

11. The sealing structure according to any one of claims 1-5, 7-8, and 10, characterized in that, The bottom of the receiving groove (211a) is provided with a plurality of protrusions (2111), which are inserted into the first sealing part (223).

12. A liquid storage assembly, characterized in that, It includes a housing portion (10) and a sealing structure (20) as described in any one of claims 1 to 11, wherein one end of the housing portion (10) has an opening and the bottom cover (21) is located in the opening.

13. An aerosol generating device, characterized in that, It includes an atomizer (300) and a reservoir assembly (100) as claimed in claim 12, the reservoir assembly (100) being connected to the atomizer (300) for providing an aerosol matrix to the atomizer (300).

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