Heating element assembly and aerosol generating device

Abstract

A heating element assembly (14) and an aerosol generating device (10). The heating element assembly (14) is applied to the aerosol generating device (10) and includes a heating element (141), a fixing seat (142) and a sealing member (145). The heating element (141) includes a base (1411) having a first end (1411a) and a second end (1411b) that are disposed opposite each other. A heating part and a connecting part (1413) are disposed on the base (1411). The connecting part (1413) is located at the first end (1411a) of the base (1411) and is electrically connected to the heating part. The fixing seat (142) is disposed on the base (1411) and is located on one side away from the second end (1411b) of the connecting part (1413) and is disposed at a distance from the connecting part (1413). The sealing member (145) is fitted onto the base (1411), and the connecting portion with the base (1411) is located between the connecting portion (1413) and the fixing seat (142). The heating element assembly (14) and the aerosol generating device (10) effectively prevent short circuits in the electronic components, extend the life of the aerosol generating device (10), and improve the safety of the aerosol generating device (10).

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from a Chinese application filed on September 8, 2021, bearing application number 2021221811045, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD This application relates to the field of electronic atomization devices, and specifically to heating element assemblies and aerosol generating devices. [Background technology]

[0002] A heat not burning (HNB) device is a device that combines an aerosol generator with an aerosol-generating substrate. The aerosol generator heats the aerosol-generating substrate at low temperatures, so that the aerosol-generating substrate does not burn, and at the same time, it can generate the aerosol required by the user.

[0003] Typically, aerosol generators include a heating element assembly, which heats an aerosol-generating substrate to generate aerosol. However, if there is a seal defect within the heating element assembly, the aerosol-generating substrate or liquids such as condensate may leak from the heating element assembly onto electronic components inside the aerosol generator. This may result in a short circuit in the electronic components, significantly shortening the lifespan of the aerosol generator and compromising its safety. Summary of the Invention [Problem to be solved by the invention]

[0004] The heating element assembly and aerosol generating device according to the present application can solve the problem of shortening the life of the aerosol generating device and making it unsafe due to poor sealing of the heating element assembly. [Means for solving the problem]

[0005] To solve the above technical problems, the present application provides a first technical solution for a heating element assembly, which is applied to an aerosol generating device and includes a heating element, a fixing seat and a sealing member.

[0006] The heating element includes a base having a first end and a second end disposed opposite each other, a heating portion and a connecting portion disposed on the base, and the connecting portion is located at the first end of the base and electrically connected to the heating portion. The fixing seat is mounted on the base, positioned on one side away from the second end of the connecting portion, and spaced apart from the connecting portion. The sealing member is fitted onto the base, and the connection point with the base is located between the connecting portion and the fixed seat. A first mounting hole is provided in the sealing member. The sealing member is fitted onto the base between the connecting portion and the fixed seat through the first mounting hole. The first mounting hole and the base are interference-fitted.

[0007] The heating element assembly further includes a heating seat assembly to which the heating element is attached. The heating seat assembly and the fixing seat sandwich at least a portion of the sealing member.

[0008] The heating seat assembly has a housing chamber. The fixed seat and the sealing member are installed in the housing chamber. The top wall of the housing chamber and the fixed seat sandwich at least a portion of the sealing member. The second end of the base protrudes outside the housing chamber.

[0009] The heating seat assembly includes a top heating seat and a bottom heating seat. The top heating seat and the bottom heating seat are engaged to form a chamber. The top heating seat is fitted onto the heating element and, together with the fixed seat, holds at least a portion of the sealing member. The sealing member seals the gap between the top heating seat and the fixed seat.

[0010] A second mounting hole is provided in the top wall of the heat generating seat. The heat generating seat is fitted onto the base body through the second mounting hole. A sealing rib is provided on the inner wall of the second mounting hole. The sealing rib seals the gap between the second mounting hole and the base body. The top wall of the heat generating seat and the fixed seat sandwich at least a portion of the sealing member. The sealing member seals the gap between the top wall of the heat generating seat and the fixed seat.

[0011] The surface of the top wall of the heat generating seat that is adjacent to the fixed seat has a locking portion. The surface of the sealing member that is adjacent to the top wall of the heat generating seat has a locking groove. The locking groove is locked into the locking portion. The locking portion and the fixed seat sandwich the bottom wall of the locking groove.

[0012] The locking portion has a protrusion at one end thereof adjacent to the fixing seat, and the sealing member has a through hole. The protrusion passes through the through hole and abuts against the fixing seat.

[0013] The through-hole and the protrusion are tightly fitted together to prevent leakage of liquid along the protrusion.

[0014] The heat generating base seat has a position restricting groove, and the fixed seat is installed in the position restricting groove.

[0015] The bottom wall of the position restriction groove has a position restriction hole. The fixing seat is fitted onto the first end of the base. A portion of the base located on one side away from the connecting portion of the fixing seat is provided within the position restriction hole. The position restriction hole and the base are tightly fitted together.

[0016] In order to solve the above technical problem, the present application provides a second technical solution of an aerosol generating device, which includes a heating element assembly and a first mounting seat. The heating element assembly is the above heating element assembly. The heating element assembly is mounted on the first mounting seat.

[0017] In the heating element assembly and aerosol generating device according to the present application, the heating element assembly includes a heating element, a fixing seat, and a sealing member. The heating element includes a base having a first end and a second end disposed opposite each other. A heating portion and a connecting portion are disposed on the base. The connecting portion is located at the first end of the base and is electrically connected to the heating portion. By disposing the connecting portion and the heating portion on the base of the heating element, the heating portion heats the aerosol-generating substrate when energized to generate aerosol. The connecting portion can be electrically connected to an outer lead, which is electrically connected to a battery, a controller, or the like. The battery can supply power to the heating portion. The controller can control the operation of the heating portion. The fixing seat is disposed on the base and is located on one side away from the second end of the connecting portion. The fixing seat is disposed at a distance from the connecting portion. The fixing seat fixes the heating element, thereby fixing the heating element within the aerosol generating device. The sealing member is fitted onto the base, and the connecting portion with the base is located between the connecting portion and the fixing seat. The sealing member prevents liquid from leaking along the base from one side close to the connecting portion of the sealing member to the other side away from the connecting portion of the sealing member, preventing liquid from leaking to the electronic components on the other side away from the connecting portion of the sealing member, efficiently preventing short circuits in the electronic components, extending the life of the aerosol generating device, and improving the safety of the aerosol generating device. [Brief explanation of the drawings]

[0018] In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings necessary for describing the embodiments will be briefly described below. However, the drawings described below are only some of the embodiments of the present application, and it is clear that a person skilled in the art can conceive of other drawings based on these drawings without any creative effort. [Figure 1] FIG. 1 is a diagram showing the configuration after assembling an aerosol-generating device and an aerosol-generating substrate according to an embodiment of the present application. [Figure 2] FIG. 2 is a cross-sectional view of the configuration taken along line AA in FIG. [Figure 3] 1 is a diagram showing a configuration after assembling a heating element, a fixing seat, and two outer leads according to an embodiment of the present application. [Figure 4] FIG. 4 is an exploded view showing the configuration of FIG. 3. [Figure 5] 1 is an exploded view showing the configuration of a heating element assembly according to an embodiment of the present application. [Figure 6] 1 is a cross-sectional view showing the configuration of a heating element assembly according to an embodiment of the present application. [Figure 7] 1 is a diagram showing the configuration of a heat generating seat and a sealing member according to an embodiment of the present application; [Figure 8] 1 is a diagram showing the configuration of a heat generating base seat according to an embodiment of the present application; [Figure 9] FIG. 10 is a cross-sectional view showing the configuration of a heating element assembly according to another embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical solutions in the embodiments of the present application will be described more clearly and in detail below with reference to the drawings in the embodiments of the present application. It should be noted that the described embodiments are only some of the embodiments of the present application, and are not all of the embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present application without creative work should be included in the scope of protection of the present application.

[0020] In the following description, for purposes of explanation rather than limitation, specific details are provided, such as particular system architectures, interfaces, techniques, etc., to provide a thorough understanding of the present application.

[0021] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or suggesting relative importance or implicitly indicating the number of technical features shown. Accordingly, features defined by "first," "second," or "third" may include at least one feature, either explicitly or implicitly. In the description of this application, "plurality" means at least two, e.g., two, three, etc., unless otherwise specifically defined. Note that all directional indications (up, down, left, right, front, rear, etc.) in the examples of this application are used only to interpret the relative positional relationships and movement situations between components in a specific position (as shown in the drawings), and when the specific position changes, the directional indications change accordingly. The terms "comprise" and "have" in the examples of this application, as well as any variations thereof, are intended to be non-exclusive. For example, processes, methods, systems, products, or apparatuses that include a series of steps or units are not limited to the listed steps or units, but may optionally include additional steps or assemblies not listed, or may include other steps or assemblies inherent to the process, method, product, or apparatus.

[0022] In this specification, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. The appearance of a word in each location in this specification does not necessarily mean that all of the words refer to the same embodiment, nor are they mutually exclusive independent or alternative embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

[0023] The present application will be described in detail below with reference to the drawings and examples.

[0024] The present application provides an aerosol generating device 10. Referring to Figures 1 and 2, Figure 1 is a diagram showing a configuration after assembling an aerosol generating device according to one embodiment of the present application and an aerosol-generating substrate, and Figure 2 is a cross-sectional view of the configuration taken along line AA in Figure 1.

[0025] Specifically, the aerosol generating device 10 includes a housing 11, a first mounting seat 12, a second mounting seat 13, a heating element assembly 14, a battery 15, and a controller (not shown). A mounting chamber 111 is formed within the housing 11. The heating element assembly 14, the first mounting seat 12, and the second mounting seat 13 are all provided within the mounting chamber 111. The second mounting seat 13 is provided at one end of the mounting chamber 111. The second mounting seat 13 forms a heating chamber 131. The heating chamber 131 is in communication with the outside air via an opening 1311.

[0026] The heating element assembly 14 is installed on one side of the heating chamber 131 away from the opening 1311. The heating element assembly 14 includes a heating element 141. The heating element 141 can generate heat when electricity is applied, and one end thereof is provided within the heating chamber 131, on one side facing the opening 1311. The aerosol-generating substrate 20 can be inserted into the heating chamber 131 through the opening 1311. Furthermore, by inserting one end of the heating element 141 into the aerosol-generating substrate 20, the heating element 141 heats the aerosol-generating substrate 20 when electricity is applied, and generates aerosol that can be inhaled by the user.

[0027] The first mounting seat 12 is installed on one side of the heating chamber 131 away from the opening 1311 and is used to mount and fix the heating element assembly 14, so that the axis of the heating element assembly 14 is parallel to the axis of the heating chamber 131. Preferably, the axis of the heating element 141 coincides with the axis of the heating chamber 131, so that after one end of the heating element 141 is inserted into the aerosol-generating substrate 20, the periphery of the aerosol-generating substrate 20 within the heating chamber 131 can be uniformly heated.

[0028] Regarding the heating element assembly 14, the configuration and function of the heating element assembly 14 according to any of the following embodiments may be referred to, and the same or similar technical effects can be achieved, so detailed description thereof will be omitted here.

[0029] The battery 15 and the controller are provided on one side of the second mounting seat 13 away from the heating chamber 131, and both are electrically connected to the heating element assembly 14. The battery 15 supplies power to the heating element assembly 14 to heat the aerosol-generating substrate 20. The controller can control the start and stop of heating by the heating element assembly 14, as well as control parameters such as the heating power and temperature of the heating element assembly 14.

[0030] Please refer to Figures 3 and 4. Figure 3 is a diagram showing the configuration after assembling the heating element, fixing seat, and two outer leads according to one embodiment of the present application. Figure 4 is an exploded view showing the configuration of Figure 3. The heating element assembly 14 includes a heating element 141, two outer leads 143, and fixing seat 142.

[0031] The heating element 141 includes a base 1411, a heating portion, and a connecting portion 1413. The base 1411 has a first end 1411a and a second end 1411b that are disposed opposite each other. The first end 1411a of the base 1411 is the end of the base 1411 that is away from the opening 1311 of the heating chamber 131, and the second end 1411b of the base 1411 is the end of the base 1411 that is inserted into the opening 1311 of the heating chamber 131. The shape of the base 1411 may be needle-like as shown in FIGS. 3 and 4, or may be sheet-like or columnar. The cross section of the base 1411 may be circular, near-circular, triangular, polygonal, or the like. The end of the second end 1411b of the base 1411 is formed as an insertion portion, for example, into a conical tip, to facilitate insertion into the aerosol-generating substrate 20. In this embodiment, the base 1411 is configured to have a cylindrical shape, and the end of the second end 1411b of the base 1411 is formed as a conical insertion portion, making it easier for the aerosol-generating substrate 20 to be inserted into and removed from the heating element 141 by rotation.

[0032] A heating portion (not shown) and a connecting portion 1413 are provided on the base 1411. The heating portion may be a heating film, a heating wire, a heating mesh, or the like, provided on the base 1411. For example, in this embodiment, the heating portion is a heating wire provided on the base 1411, and the heating wire may be printed on a flexible ceramic film, and the flexible ceramic film having the heating wire may be wrapped around the outer surface of the base 1411, and the flexible ceramic film having the heating wire may be sintered together with the base 1411. In this embodiment, the heating wire is striped, and both ends of the striped heating wire are provided on the first end 1411a of the base 1411. In another embodiment, the heating portion may be spiral-shaped.

[0033] The connecting portion 1413 is located at the first end 1411a of the base 1411 and is electrically connected to the heat generating portion. Specifically, there are two connecting portions 1413. The two connecting portions 1413 are installed at the first end 1411a of the base 1411 with a gap between them. The connecting portion 1413 may be a pad, and the two outer leads 143 are welded to the base. The two connecting portions 1413 are electrically connected to both ends of the heat generating portion, respectively. Furthermore, the two connecting portions 1413 are electrically connected to the two outer leads 143, respectively. The two outer leads 143 are electrically connected to the battery 15, the controller, etc. This allows the battery 15 to supply power to the heat generating portion, and the controller to control the operation of the heat generating portion. In one embodiment, both ends of the heating part are mounted on the first end 1411a of the base 1411, and two metal pads are mounted on the first end 1411a of the base 1411 with a gap between them to form two connecting parts 1413. In another embodiment, both ends of the heating part are mounted on the first end 1411a and the second end 1411b of the base 1411, respectively, and one metal pad is mounted on the first end 1411a of the base 1411 to form one connecting part 1413, and the other metal pad extends from the second end 1411b of the base 1411 to the first end 1411a of the base 1411 and is located at the end of the first end 1411a of the base 1411 to form the other connecting part 1413.

[0034] In one embodiment, a protective layer (not shown) is provided on the outer surfaces of the heating part, the connecting part 1413, and the outer lead 143. The protective layer prevents direct contact between the aerosol-generating substrate 20 or liquids such as condensate and the heating part, the connecting part 1413, and the outer lead 143, and prevents damage due to a short circuit to the heating part, the connecting part 1413, the outer lead 143, etc.

[0035] The fixing seat 142 fixes the heating element 141. The fixing seat 142 may be, but is not limited to, a flange. The fixing seat 142 is installed on the base 1411 and is installed at a distance from the connecting portion 1413 on one side away from the second end 1411b of the base 1411. In this embodiment, the fixing seat 142 is fitted onto the base 1411, and one ends of the two outer leads 143 are electrically connected to the two connecting portions 1413, respectively, and the other ends extend through openings in the fixing seat 142 to one side of the fixing seat 142 away from the connecting portion 1413. In this embodiment, the fixing seat 142 fixes the heating element 141 so that the axis of the heating element 141 can be parallel to the axis of the heating chamber 131. Preferably, the axis of the heating element 141 coincides with the axis of the heating chamber 131, so that after the aerosol-generating substrate 20 is inserted into the heating element 141 within the heating chamber 131, the heating element 141 can uniformly heat the periphery of the aerosol-generating substrate 20. The fixing seat 142 may be made of a ceramic material and may be sintered together with the heating element 141, i.e., molded integrally with the heating element 141.

[0036] In this embodiment, the fixing seat 142 is fitted onto the end of the first end 1411a of the base 1411, and the end face of the first end 1411a of the base 1411 and the surface of the fixing seat 142 that is remote from the connecting portion are flush with each other. In another embodiment, the fixing seat 142 may be fitted onto the first end 1411a of the base 1411, and may be spaced a certain distance from the end of the first end 1411a. That is, the end of the first end 1411a of the base 1411 passes through the fixing seat 142 and is installed on one side that is remote from the connecting portion 1413 of the fixing seat 142.

[0037] In this embodiment, the first end 1411a of the base 1411 and the heat generating portion of the base 1411 are provided inside the heating chamber 131, and the heat generating portion of the base 1411 heats the aerosol-generating substrate 20 inside the heating chamber 131. The second end 1411b of the base 1411, the connecting portion 1413 of the base 1411, and the fixing seat 142 are all installed inside the mounting chamber 111 outside the heating chamber 131.

[0038] Please refer to Figures 5 and 6. Figure 5 is an exploded view showing the configuration of a heating element assembly according to one embodiment of the present application. Figure 6 is a cross-sectional view showing the configuration of a heating element assembly according to one embodiment of the present application. The present application provides a heating element assembly 14 that is applied to an aerosol generating device 10. The heating element assembly 14 includes a heating element 141, a heating seat assembly 144, a fixing seat 142, and a sealing member 145.

[0039] The sealing member 145 is fitted onto the base 1411, and the connecting position with the base 1411 is located between the connecting portion 1413 and the fixed seat 142. Specifically, referring to FIG. 7 , a first mounting hole 1451 is provided in the sealing member 145. The sealing member 145 is fitted onto the base 1411 through the first mounting hole 1451. The first mounting hole 1451 and the base 1411 are tightly fitted together. The position where the first mounting hole 1451 and the base 1411 are tightly fitted together is located between the connecting portion 1413 and the fixed seat 142. In this way, the sealing member 145 can prevent liquid from leaking along the heating element 141 from one side of the sealing member 145 close to the connecting portion 1413 to the other side away from the connecting portion 1413 of the sealing member 145, and further prevent liquid from leaking to the electronic components on the side away from the connecting portion 1413 of the sealing member 145. This effectively prevents short circuits in the electronic components, extends the life of the aerosol generation device 10, and improves the safety of the aerosol generation device 10. The heating seat assembly 144 can be used to attach and fix the heating element, the fixing seat 142, and the sealing member 145. Referring to FIGS. 5 and 6, the heating element 141 and the fixing seat 142 are attached to the heating seat assembly 144. The heating seat assembly 144 and the fixing seat 142 sandwich at least a portion of the sealing member 145. The sealing member 145 seals the gap between the heating seat assembly 144 and the fixing seat 142. The heating seat assembly 144 and the fixed seat 142 sandwich the sealing member 145, thereby fixing and restricting the position of the sealing member 145. For example, in this embodiment, the heating seat assembly 144 and the fixed seat 142 sandwich the sealing member 145, thereby restricting the position of the sealing member 145 to the base 1411 between the connecting portion 1413 and the fixed seat 142.

[0040] Furthermore, the heating seat assembly 144 includes a heating top seat 1441 and a heating bottom seat 1442. The heating top seat 1441 and the heating bottom seat 1442 engage with each other to form a receiving chamber 1443. The fixing seat 142, the sealing member 145, and a portion of the heating element 141 are disposed within the receiving chamber 1443. The heating top seat 1441 and the heating bottom seat 1442 may be detachably connected or may be locked together. Furthermore, as shown in FIG. 6 of this embodiment, the heating top seat 1441 and the heating bottom seat 1442 may be connected by connecting members, such as screws or bolts.

[0041] Specifically, an accommodating groove 1441a is provided on one side of the heating top seat 1441 facing the heating bottom seat 1442. The heating bottom seat 1442 has a position restricting groove 1442a communicating with the accommodating groove 1441a on one side facing the heating top seat 1441. The accommodating groove 1441a and the position restricting groove 1442a form an accommodating chamber 1443 in the heating seat assembly 144. In other embodiments, the heating top seat 1441 and the heating bottom seat 1442 may be integrally molded, i.e., the heating seat assembly 144 may be an integrally molded structural member with the accommodating chamber 1443 installed therein.

[0042] The top wall of the storage chamber 1443 and the fixed seat 142 sandwich at least a portion of the sealing member 145. Specifically, the top wall 1441b of the storage chamber 1443 abuts against one surface of the sealing member 145 facing the connecting portion 1413. The surface of the fixed seat 142 facing the connecting portion 1413 abuts against one surface of the sealing member 145 facing away from the connecting portion 1413. In this way, the top wall of the storage chamber 1443 and the fixed seat 142 sandwich the sealing member 145 and fix the sealing member 145 to the base 1411 between the connecting portion 1413 and the fixed seat 142.

[0043] In this embodiment, the heating seat 1441 is fitted onto the heating element 141. Furthermore, the first end 1411a of the base 1411 is installed within the receiving chamber 1443, and the second end 1411b of the base 1411 protrudes out of the receiving chamber 1443 and is installed within the heating chamber 131. The heating seat 1441, together with the fixing seat 142 and the heating bottom seat 142, clamps the sealing member 145, thereby fixing the sealing member 145 to the base 1411 between the connecting portion 1413 and the fixing seat 142. Furthermore, please refer to FIGS. 6 and 7. FIG. 7 is a diagram showing the configuration of the heating seat and sealing member according to one embodiment of the present application. The heating seat 1441 has a top wall 1441b and an annular side wall 1441c. The annular side wall 1441c of the heating seat 1441 is located on one side of the top wall 1441b of the heating seat 1441 that is away from the heating chamber 131. The internal space surrounded by the top wall 1441b and the annular side wall 1441c of the heating seat 1441 is the receiving groove 1441a. In one embodiment, the top wall 1441b of the heating seat 1441 and the fixing seat 142 sandwich at least a portion of the sealing member 145, and the sealing member 145 seals the gap between the top wall 1441b of the heating seat 1441 and the fixing seat 142.

[0044] A second mounting hole 1441d is formed in the top wall 1441b of the heating base 1441. The heating base 1441 is fitted onto the base 1411 through the second mounting hole 1441d. The second mounting hole 1441d and the base 1411 are tightly fitted together, or a sealing rib 1444 is formed on the inner wall of the second mounting hole 1441d. The sealing rib 1444 seals the gap between the second mounting hole 1441d and the base 1411, thereby preventing liquid from leaking along the heating part from one side of the heating base 1441 that is close to the heating chamber 131 to the other side of the heating base 1441 that is away from the heating chamber 131. This further prevents liquid from leaking along the heating part to the electronic components, effectively preventing short circuits in the electronic components, extending the life of the aerosol generator 10, and improving the safety of the aerosol generator 10.

[0045] In this embodiment, as shown in FIGS. 6 and 7 , the surface of top wall 1441b of heating top seat 1441 that is adjacent to heating bottom seat 1442 has locking portion 1441e. The surface of sealing member 145 that is adjacent to top wall 1441b of heating top seat 1441 has locking groove 1452. Locking portion 1441e is locked into locking groove 1452. Locking portion 1441e and fixing seat 142 sandwich the bottom wall of locking groove 1452, but locking portion 1441e and heating bottom seat 1442 may also sandwich the bottom wall of locking groove 1452. The provision of locking portion 1441e and locking groove 1452 allows heating top seat 1441 to further fix and position sealing member 145.

[0046] In another embodiment, the surface of the top wall 1441b of the heating top seat 1441 adjacent to the heating bottom seat 1442 may have the locking groove 1452, and the surface of the sealing member 145 adjacent to the top wall 1441b of the heating top seat 1441 may have the locking portion 1441e, with the locking groove 1452 locking with the locking portion 1441e. The shapes of the locking groove 1452 and the locking portion 1441e are not limited and may be designed as needed, as long as one of the heating bottom seat 1442 and the sealing member 145 has the locking portion 1441e and the other has the locking groove 1452. The installation form of the heating base assembly 144 and the sealing member 145 is not limited to the various structures mentioned in this application and may have other structures.

[0047] Furthermore, one end of the locking portion 1441e adjacent to the fixing seat 142 has a protrusion 1441f, and the bottom wall of the locking groove 1452 of the sealing member 145 has a through-hole 1453 that is located corresponding to the protrusion 1441f. The protrusion 1441f is located within the through-hole 1453. The engagement between the protrusion 1441f and the through-hole 1453 further secures and restricts the position of the sealing member 145. In one embodiment, the through-hole 1453 and the protrusion 1441f are tightly fitted together, which prevents liquid leakage along the protrusion 1441f of the heating seat 1441 and improves the sealing effect of the heating element assembly 14.

[0048] The number of protrusions 1441f and through holes 1453 may be the same. Also, the number of protrusions 1441f and through holes 1453 may be one or more. In this embodiment, the number of protrusions 1441f and through holes 1453 is three. The greater the number of protrusions 1441f and through holes 1453, the better the fixing effect to the sealing member 145. In other embodiments, the through holes 1453 may be blind via holes, which can fix and regulate the position and also prevent liquid leakage.

[0049] In one embodiment, as shown in FIGS. 6 and 8, FIG. 8 is a diagram illustrating the configuration of a heating base according to one embodiment of the present application. The heating base 1442 has a positioning groove 1442a, and the fixing base 142 is installed in the positioning groove 1442a. The shape of the positioning groove 1442a may be the same as that of the fixing base 142. In this way, the fixing base 142 is installed in the positioning groove 1442a, and the position of the fixing base 142 can be fixed and restricted by the positioning groove 1442a. Installing the fixing base 142 in the positioning groove 1442a not only fixes the heating element 141, but also allows the axis of the fixing base 142 to be parallel to the axis of the heating base module 144. When the heating element 141 is perpendicular to the fixing base 142, the axis of the heating element 141 is parallel to the axis of the heating base module 144. By adjusting the heating seat module 144 so that it is parallel to the axes of the first mounting seat 12 and the second mounting seat 13, the axis of the heating element 141 can be made parallel to or coincident with the axis of the heating chamber 131. This allows the heating element 141 to uniformly heat the aerosol-generating substrate 20 in the heating chamber 131.

[0050] In this embodiment, the protrusion 1441f of the heating base 1441 passes through the through-hole 1453 and abuts against a surface of the fixing base 142 adjacent to the connecting portion 1413, thereby engaging the protrusion 1441f with the position restricting groove 1442a to restrict the position of the periphery of the fixing base 142 and fix the heating element 141. In other embodiments, the fixing form of the fixing base 142 by the heating base assembly 144 is not limited to the fixing forms mentioned in this application and may be other forms.

[0051] In one embodiment, as shown in FIG. 9, FIG. 9 is a cross-sectional view showing the configuration of a heating element assembly according to another embodiment of the present application. In this embodiment, the fixing seat 142 is fitted onto the first end 1411a of the base 1411, and the end of the first end 1411a of the base 1411 penetrates the fixing seat 142 and is installed on one side of the fixing seat 142 away from the second end 1411b of the base 1411. The bottom wall of the positioning groove 1442a of the heating base 1442 has a positioning hole 1442b. The part of the base 1411 located on the fixing seat 142 and away from the second end 1411b of the base 1411 is installed within the positioning hole 1442b. The positioning hole 1442b and the base 1411 are interference-fitted. In this embodiment, the second mounting hole 1441d of the heating top seat 1441 is also interference-fitted with the base 1411. The second mounting hole 1441d of the top heating seat 1441 and the positioning hole 1442b of the bottom heating seat 1442 are both interference-fit with the base 1411. This allows the base 1411 to be directly fixed by the second mounting hole 1441d and the positioning hole 1442b. Furthermore, by aligning the axes of the second mounting hole 1441d and the positioning hole 1442b, the axis of the heating seat assembly 144 is directly aligned with the axis of the heating element 141, aligning the axes of the heating element and the heating element 131, allowing the heating element 141 to uniformly heat the periphery of the aerosol-generating substrate 20. Directly fixing the heating element 141 to the heating seat assembly 144 in this way reduces the requirements for the perpendicularity of the fixing seat 142 and the heating element 141, as well as the requirements for the shape of the fixing seat 142 and the manufacturing precision of the fixing seat 142, thereby reducing the difficulty of manufacturing the heating element assembly 14.

[0052] The above description is merely an embodiment of the present application and does not limit the scope of protection of the present application. All modifications of the equivalent structure or equivalent flow made by the specification and accompanying drawings of the present application, directly or indirectly applied to other related technical fields, should also be included in the scope of protection of the present application for the same reasons.

Claims

1. A heating element assembly for use in an aerosol generating device, comprising: a heating element including a base, the base having a first end and a second end opposite to each other, a heating portion and a connecting portion disposed on the base, the connecting portion being located at the first end of the base and electrically connected to the heating portion; a fixing seat that is installed on the base, that is located on one side of the connecting portion that is away from the second end of the base, and that is installed at a distance from the connecting portion; a sealing member fitted onto the base, the connecting portion with the base being located between the connecting portion and the fixing seat; The sealing member has a first mounting hole; the sealing member is fitted onto the base between the connecting portion and the fixed seat through the first mounting hole; the first mounting hole and the base are fitted together by an interference fit; A heating element assembly, wherein one end of the heating element is inserted into an aerosol-generating substrate.

2. Further comprising a heating seat assembly to which the heating element is attached; The heating element assembly according to claim 1 , wherein the heating seat assembly and the fixing seat sandwich at least a portion of the sealing member.

3. The heating seat assembly has a chamber, the fixing seat and the sealing member are installed in the accommodation chamber, the top wall of the storage chamber and the fixing seat sandwich at least a portion of the sealing member; 3. The heating element assembly according to claim 2, wherein the second end of the base protrudes outside the chamber.

4. The heating seat assembly includes a top heating seat and a bottom heating seat; the heat generating top seat and the heat generating bottom seat are engaged to form the accommodating chamber; the heat generating seat is fitted onto the heat generating element and holds at least a portion of the sealing member together with the fixing seat; 4. The heating element assembly according to claim 3, wherein the sealing member seals a gap between the heating seat and the fixing seat.

5. A second mounting hole is provided on the top wall of the heat generating seat; the heat generating seat is fitted onto the base through the second mounting hole; A sealing rib is provided on the inner wall of the second mounting hole, the sealing rib seals a gap between the second mounting hole and the base; the top wall of the heat-generating seat and the fixing seat sandwich at least a portion of the sealing member; 5. The heating element assembly according to claim 4, wherein the sealing member seals a gap between the top wall of the heating seat and the fixing seat.

6. a surface of the top wall of the heat generating seat adjacent to the fixed seat has a locking portion; a surface of the sealing member adjacent to the top wall of the heat-generating seat has a locking groove; The locking groove is engaged with the locking portion, The heating element assembly according to claim 5 , wherein the locking portion and the fixing seat sandwich the bottom wall of the locking groove.

7. One end of the locking portion adjacent to the fixing seat has a protrusion, The sealing member has a through hole, The heating element assembly according to claim 6 , wherein the protrusion passes through the through hole and abuts against the fixing seat.

8. The heating element assembly according to claim 7, wherein the through-hole and the protrusion are tightly fitted together to prevent leakage of liquid along the protrusion.

9. The heat generating base seat has a position regulating groove, The heating element assembly according to claim 4 , wherein the fixing seat is installed in the position regulating groove.

10. a bottom wall of the position restriction groove having a position restriction hole; the fixing seat is fitted onto the first end of the base body; a portion of the base body located on one side of the fixing seat away from the connecting portion is provided within the position restricting hole; The heating element assembly according to claim 9, wherein the positioning hole and the base are tightly fitted together.

11. An aerosol generating device, comprising: a heating element assembly according to claim 1; a first mounting seat to which the heating element assembly is attached.

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