CN113768200A

CN113768200A - Channel plugging assembly and aerosol generating device

Info

Publication number: CN113768200A
Application number: CN202111232886.9A
Authority: CN
Inventors: 蔡吉俊; 钱轶霆; 陈超; 张文良
Original assignee: Shanghai Tobacco Group Co Ltd; Shanghai New Tobacco Products Research Institute Co Ltd
Current assignee: Shanghai Tobacco Group Co Ltd; Shanghai New Tobacco Products Research Institute Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2021-12-10

Abstract

The invention provides a channel plugging assembly capable of being used for an aerosol generating device, wherein the aerosol generating device comprises a channel with a plugging end, the channel plugging assembly comprises an end plug, the end plug is provided with a front end and a rear end, the end plug is plugged into the channel from the plugging end from the front end, the rear end is close to the outside of the plugging end, a first magnetic body is arranged on the end plug, a second magnetic body is arranged on the channel, the polarity of the first magnetic body is the same relative to the polarity of the second magnetic body, and in the process of inserting the end plug into the channel, the first magnetic body is far away from the plugging end and crosses over the second magnetic body. The channel plugging assembly can feel the pushing force when the end plug is installed and removed, and is convenient to use.

Description

Channel plugging assembly and aerosol generating device

Technical Field

The invention relates to the field of aerosol heating, in particular to a channel plugging assembly and an aerosol generating device.

Background

With the growing concern over health, people are aware that traditional cigarettes pose certain health risks, and as a result, a product known as "heated non-burning cigarettes" has been produced. Compared with the traditional cigarette, the tobacco shreds of the cigarette are not combusted after being heated and not combusted, so that the user can obtain experience and the suction of harmful substances is reduced. The heating cigarette appliance is used as small-sized electronic equipment, the bottom of a channel matched with cigarettes can be provided with a plugging part for plugging and limiting, and the heating cigarette appliance can be conveniently used for cleaning an air passage by a user in a detachable mode. There is still room for improvement in the provision of a closure assembly for a passageway in order to improve the ease of removal and the experience of use.

Disclosure of Invention

The invention provides a channel plugging assembly for solving the technical problem.

The invention provides a channel plugging assembly capable of being used for an aerosol generating device, wherein the aerosol generating device comprises a channel with a plugging end, the channel plugging assembly comprises an end plug, the end plug is provided with a front end and a rear end, the end plug enters the channel from the plugging end from the front end, the rear end is close to the outside of the plugging end, a first magnetic body is arranged on the end plug, a second magnetic body is arranged on the channel, the polarity of the first magnetic body is the same relative to the polarity of the second magnetic body, and in the process of inserting the end plug into the channel, the first magnetic body is far away from the plugging end and goes over the second magnetic body.

By adopting the technical scheme, the channel plugging component can feel the pushing force when the end plug is assembled and disassembled, and is convenient to use.

Optionally, a first threaded portion is provided on the outer peripheral wall of the end plug, and an engagement portion engaged with the first threaded portion is provided on the inner wall of the passage at a corresponding position, so that the end plug can be screwed in and out.

Alternatively, the first screw portion is located between the first magnetic body and the rear end in the axial direction.

Alternatively, the end plug is inserted into the passage from the insertion end from the leading end, the first magnetic body is located at a first position in the axial direction at a start position at which the first screw portion is screwed into the engagement portion, the first position being closer to the insertion end than the second magnetic body is, and the first magnetic body is moved to a second position in the axial direction at an end position at which the first screw portion is completely screwed into the engagement portion, the second position being farther from the insertion end than the second magnetic body is.

Optionally, a pitch of the first threaded portion is greater than or equal to a distance between the first position and the second position.

Optionally, the first magnetic body is provided on an outer peripheral wall of the end plug between the front end and the rear end.

Optionally, the first magnetic bodies are a plurality of magnetic bodies, and the plurality of magnetic bodies have the same polarity towards the outside at the same axial position, and/or the plurality of magnetic bodies have the same polarity, are located on the inner peripheral wall of the channel and have the same axial position.

Optionally, the first threaded portion is an external thread and the engagement portion is an internal thread.

Optionally, the first threaded portion and the engagement portion are double or multiple start threads.

Optionally, the first threaded portion is a partial thread and the engagement portion is a full thread.

Optionally, an air guide gap is provided between the end plug and the channel to allow air flow to circulate.

Optionally, at least a portion of the peripheral wall of the end plug forms the air guide gap.

Optionally, the channel is capable of receiving and heating an aerosol-generating substrate.

The invention also provides an aerosol generating device which comprises any one of the channel plugging components.

According to the aerosol generating device, the end plug is used for plugging the channel through the arrangement of the plugging component, and meanwhile, the accommodated substance in the channel can be limited.

Particular embodiments of the present invention provide an aerosol-generating device further comprising a housing, the passageway comprising a cartridge capable of containing and heating an aerosol-generating substrate, the cartridge being located within the housing and having an axial direction and a radial direction, the cartridge extending in the axial direction and being open to an exterior of the housing, the cartridge being of the same size in the radial direction in the axial direction.

Optionally, the cigarette storehouse extends through the multistage termination and forms, the multistage includes the storehouse of heating and the storehouse of extending that equals with the storehouse internal diameter that generates heat, extend the one end in storehouse with the one end in storehouse of heating is followed the axial alignment and is connected, the other end in storehouse of extending leads directly the casing is outside.

Optionally, the extension bin comprises an extension pipe and a heat insulation pipe located between the extension pipe and the heating bin along the axial direction, and two opposite ends of the heat insulation pipe along the axial direction are respectively communicated with the heating bin and the extension pipe in an end connection mode.

Optionally, the extension pipe extends to the bottom of the housing in the axial direction.

Optionally, the aerosol generating device further comprises an upper end cover, one end of the upper end cover is communicated with the upper end of the heating bin, and the other end of the upper end cover extends and is communicated to the top of the shell, so that the aerosol generating substrate is fed from the upper end cover.

Optionally, the heat insulation pipe forms a lower end cover, and the heat insulation pipe and the upper end cover jointly clamp the heating bin.

Optionally, the end plug is for plugging the extension bin from the bottom of the housing.

The invention provides an aerosol generating device, comprising a shell and a cigarette chamber positioned in the shell, wherein the cigarette chamber is used for containing and heating aerosol generating substrate and has an axial direction and a radial direction, the cigarette chamber is formed by extending through a plurality of sections of end joints, the cigarette chamber extends along the axial direction and is directly communicated to the outside of the shell, and the cigarette chamber has the same size in the radial direction along the axial direction.

The cigarette bin adopts a straight-through channel mode, the problem of sanitary dead angles is solved, after the cigarette bin is used for a period of time, residues in the cigarette bin can be cleaned in a mode that a tool penetrates through the channel in the cigarette bin, and the cigarette bin is convenient to operate. The channel formed by the multiple sections of the end joints in an extending mode can effectively insulate heat, and heat extending and transferring from the channel are reduced.

Optionally, the multistage includes the storehouse of generating heat and the extension storehouse that equals with the storehouse internal diameter that generates heat, the one end that extends the storehouse with the one end in storehouse of generating heat is connected along axial alignment, the other end in the storehouse of extending leads to outside the casing.

Optionally, the specific heat capacity of the inner wall material of the heat insulation pipe is greater than that of the inner wall material of the heating bin.

Optionally, the material of the inner wall of the heat insulation pipe is selected from one of PEEK, polyimide and ceramic.

Optionally, the aerosol generating device further comprises an end plug, the end plug being removable for plugging into the cartridge from the bottom of the housing.

Optionally, an air guide gap is provided between the end plug and the housing and the cartridge in the radial direction for air flow communication.

The invention provides an aerosol generating device, which comprises a cigarette bin and a heat insulation assembly, wherein the cigarette bin is used for accommodating and heating aerosol generating substrates, the heat insulation assembly comprises a first heat insulation piece, a secondary heat insulation piece and a shell, the shell comprises an inner shell and an outer shell, the first heat insulation piece is sleeved on the periphery of the cigarette bin, the secondary heat insulation piece is sleeved on the periphery of the first heat insulation piece and embedded in the inner shell, the outer shell is sleeved on the periphery of the inner shell, and a first heat insulation gap is formed between the inner wall of the outer shell and the outer wall of the inner shell.

The aerosol generating device has the advantages that the heat insulation assembly is combined with the five parts of structures to realize heat insulation, the first heat insulation piece, the second heat insulation piece, the inner sleeve shell, the outer sleeve shell and the first heat insulation gap are respectively arranged, the heat insulation effect can be achieved under the condition that the volume of the smoking set is not increased obviously, and compared with the mode that only air heat insulation is adopted or only a rigid heat insulation piece is adopted for heat insulation, the aerosol generating device is more excellent in heat insulation effect.

Optionally, a second insulating gap exists between the inner wall of the first insulating member and the outer wall of the cartridge.

Optionally, the second insulation gap is closed at two ends in the axial direction.

Optionally, a sealing member is arranged between two axially opposite ends of the first heat insulation member and the cigarette bin.

Optionally, the second insulating gap has a thickness of 0.2-10 mm.

Optionally, the first insulating gap has a thickness of 0.1-10 mm.

Optionally, a plurality of bump structures are arranged on the outer wall of the inner casing or the inner wall of the outer casing, and are used for limiting the contact between the inner casing and the outer casing.

Optionally, the number of the bump structures is 2 or more.

Optionally, the outer wall of the inner sleeve shell has four faces, and the salient point structures are arranged on the four faces, or the inner wall of the outer sleeve shell has four faces, and the salient point structures are arranged on the four faces of the inner wall.

Optionally, the bump structure is in a shape of a strip or a dot, and each bump junction isThe contact area between the structure and the outer sleeve shell is not less than 0.5mm²。

Optionally, the inner sleeve shell comprises a front inner sleeve shell and a rear inner sleeve shell, and the front inner sleeve shell and the rear inner sleeve shell are butted to form a cavity for accommodating and clamping the cigarette cabin and other components in the shell.

Optionally, the aerosol generating device satisfies one or more of the following conditions (1) to (4):

(1) the first heat insulation part is made of PEEK or stainless steel;

(2) the secondary heat insulation piece is made of PEEK or stainless steel;

(3) the inner casing is made of one or more of ABS, PC and PEEK;

(4) the material of the outer sleeve shell is selected from one or more of aluminum alloy, zinc alloy, PC, ABS and nylon.

Optionally, a second thermal insulation gap exists between the outer wall of the heating bin and the inner wall of the first thermal insulation piece, the upper end cover and the lower end cover are located between the heating bin and the first thermal insulation piece in the circumferential direction, and both ends of the second thermal insulation gap in the axial direction are sealed by sealing pieces.

Optionally, the sealing member is silicone.

Optionally, the first heat insulation piece and the second heat insulation piece are sleeved on the periphery of the heating bin, and the extension bin axially extends relative to the first heat insulation piece and the second heat insulation piece.

Optionally, the extension bin is located within the housing.

The invention provides a shell component capable of being used for an aerosol generating device, which comprises a shell and a key mechanism, wherein the shell comprises an inner shell and an outer shell, the key mechanism comprises an outer key part and an inner key part, the outer shell and the inner shell are respectively provided with a first perforation and a second perforation which are oppositely arranged along a first installation direction, the inner key part is at least partially embedded in the second perforation, the outer shell is sleeved outside the inner shell, the outer key part penetrates through the first perforation and the second perforation along the first installation direction to be in butt joint with the inner key part, and the key mechanism forms a pin lock structure for preventing the outer shell from being separated from the inner shell.

The locking of casing can be realized after the installation to the design of adoption round pin lock formula button, plays the effect of supplementary installation. Meanwhile, the gluing operation can be avoided, the gluing pressure maintaining time is cancelled, the production line ascending efficiency is improved, and the automation degree is improved.

Optionally, the outer casing is sleeved on the inner casing along a second mounting direction, and the first mounting direction is not parallel to the second mounting direction.

Optionally, the first mounting direction is substantially perpendicular to the second mounting direction.

Alternatively, the end surface of the inner key portion may be partially covered by the inside of the inner jacket and partially exposed through the second through hole.

Optionally, the outer key portion passes through the first through hole and the second through hole along the first mounting direction to be clamped with the casing or the inner key portion, so as to prevent the outer key portion from being removed from the outer casing.

Optionally, the outer key portion has a first clamping portion for clamping, and the housing or the inner key portion is provided with a second clamping portion correspondingly matched with the first clamping portion.

Optionally, the second clamping portion is located inside the second through hole.

Optionally, the outer key portion has an open end, the open end is connected to the inner key portion, and the first clamping portion is disposed at the open end.

Optionally, the first clamping portion is a clamping hook, the second clamping portion is a groove matched with the clamping hook, and the clamping hook is an elastic wall clamping hook.

Optionally, the inner key portion further includes a first light guide assembly, the first light guide assembly has a plurality of independent first light guide portions, the plurality of first light guide portions correspond to the plurality of light emitting elements in the housing one to one, the plurality of first light guide portions are spaced from each other by penetrating through the inner key portion, and the outer key portion is provided with a plurality of light holes corresponding to each of the first light guide portions.

Optionally, the outer key portion further includes a second light guide assembly, the second light guide assembly has a plurality of independent second light guide portions, the plurality of second light guide portions correspond to the plurality of first light guide portions one to one, and the second light guide portions are configured to transmit light from the first light guide portions to the corresponding light transmission holes.

Optionally, the outer key portion and the inner key portion are connected without a gap, so that the outer key portion and the inner key portion move synchronously.

Optionally, the gapless connection is a magnetic connection, a tight fit connection, a snap connection, or a glue dispensing connection.

Optionally, the key mechanism further includes an inner magnetic body and an outer magnetic body, which are attracted to each other, the inner magnetic body is fixed to the inner key portion, the outer magnetic body is fixed to the outer key portion, and the inner magnetic body and the outer magnetic body are connected to each other, so that the outer key portion is in butt joint with the inner key portion.

Optionally, the maximum protrusion height of the outer surface of the outer key part relative to the outer surface of the outer casing is not more than 0.5mm, and the maximum depression depth is not more than 2 mm.

Optionally, an outer surface of the outer key portion is substantially flush with an outer surface of the outer casing.

Optionally, there is provided an aerosol generating device for heating an aerosol-generating substrate, comprising any of the housing assemblies described above.

Drawings

Figure 1 shows a schematic view of an end plug according to a particular embodiment of the invention;

figure 2 shows a schematic cross-section of an end plug according to a particular embodiment of the invention;

FIG. 3 is a schematic structural view of a channel plugging assembly according to an embodiment of the present invention;

fig. 4A-4D show schematic views of an end plug according to an embodiment of the invention being installed in a channel;

fig. 5A-5D show schematic views of an end plug according to an embodiment of the invention during removal from a channel;

FIG. 6 shows a schematic cross-sectional view of a bottom surface of an aerosol generating device according to an embodiment of the present invention;

FIG. 7 shows a schematic cross-sectional view of a particular embodiment of the invention comprising a cartridge and vacuum insulation;

FIG. 8 shows an exploded view of a particular embodiment of the present invention incorporating a smoke bin and vacuum insulation;

FIG. 9 shows an exploded view of a particular embodiment of the present invention incorporating a cartridge and a partial insulating assembly;

FIG. 10 is a schematic diagram of an external structure of an aerosol generating device according to an embodiment of the present invention;

FIG. 11 shows a first schematic cross-sectional view of an aerosol generating device according to an embodiment of the invention;

FIG. 12 is a schematic diagram of a key mechanism according to an embodiment of the present invention;

FIG. 13 is a schematic view of a rear view of a key mechanism according to an embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view of a second embodiment of an aerosol generating device according to the present invention;

FIG. 15 shows a first schematic view of a housing assembly of an aerosol generating device according to an embodiment of the present invention;

fig. 16 shows a second schematic view of the mounting of the housing assembly of the aerosol generating device according to the embodiment of the present invention.

Reference numerals:

the plug 1, the front end 11, the rear end 12, the first magnetic body 13, the first screw portion 14, the air guide gap 15, the chamfered surface 16, the smoke box 2, the insertion end 21, the second magnetic body 22, the engagement portion 23, the heat generation box 24, the extension box 25, the extension tube 251, the heat insulation tube 252, the upper end cap 26, the housing 3, the inner housing 31, the outer housing 32, the first heat insulation gap 33, the bump structure 34, the front inner housing 311, the rear inner housing 312, the first through hole 35, the second through hole 36, the first outer housing 321, the second outer housing 322, the vacuum heat insulation 41, the secondary heat insulation 42, the second heat insulation gap 43, the second sealing member 44, the second sealing member 45, the upper heat generation box positioning sleeve 46, the lower end cap sheath 47, the circuit board 51, the battery 52, the battery fixing cotton 53, the inner key portion 61, the outer key portion 62, the hook 63, the groove 64, the open end 621, the first light guide member 65, the first light guide portion 651, light hole 622, perforation 611, second light guide assembly 66, second light guide portion 661, external magnet 623, internal magnet 612, cigarette 7

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "high", "low", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.

The directions "axial direction", "circumferential direction", "radial direction", and the like in the present invention are schematically applicable to any member in the device of the present invention. The "axial direction" corresponds to the extending direction in the device and the inner member, the "circumferential direction" corresponds to the outer or inner circumferential direction in the device and the inner member, and the "radial direction" is perpendicular to the "axial direction" with respect to the "axial direction".

By "aerosol-generating substrate" is meant herein a substrate which is capable of releasing volatile aerosol-forming compounds upon heating of the aerosol-forming substrate. The aerosol-generating substrate of the present invention may be a solid or a liquid. For example, the liquid aerosol-generating substrate may comprise water, a solvent, ethanol, a plant extract and a natural or artificial flavouring. The aerosol-generating substrate may also be a paste-like material, a sachet of porous material comprising the aerosol-generating substrate or loose tobacco, for example mixed with a gelling agent or adhesive, which may contain a common nebuliser such as glycerol. Alternatively, the aerosol-generating substrate may comprise a tobacco-containing material or a non-tobacco material, either tobacco-containing or non-tobacco material, such as flavourants which may be volatilised with or without heating. Also included in the aerosol-generating substrate is a nebulant, for example glycerol or propylene glycol. The aerosol-generating substrate may also comprise additional added ingredients, such as nicotine or a flavour extract. For solid aerosol-generating substrates, the structure, which may form a cartridge or a rod, is housed in a smoking device, further made in the form of a heated cigarette, which will also contain a tobacco substrate portion and a filter portion.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the present invention provides a channel plugging assembly that can be used in an aerosol generating device comprising a channel having a plugging end, the channel plugging assembly comprising an end plug 1. The channel may be, for example, an air channel, a storage channel. In this embodiment, the passageway is, for example, a cartridge 2 for storing cigarettes 7. The cigarette chamber 2 is provided with a plugging end 21, the end plug 1 is provided with a front end 11 and a rear end 12, the plugging direction of the end plug 1 into the cigarette chamber 2 is from the plugging end 21 into the cigarette chamber 2 from the front end 11, and the rear end 12 is arranged towards the outside of the plugging end 21. That is, the rear end 12 is disposed further out of the cartridge 2 than the front end 11, after the end plug 1 has been plugged into position. The direction from the rear end 12 to the front end 11 in this embodiment coincides with the axial direction of the end plug 1, for example the x-direction in fig. 3, which also coincides with the insertion direction of the end plug 1. The end plug 1 is provided with a first magnetic body 13, and the channel is provided with a second magnetic body 22. The first magnetic body 13 and the second magnetic body 22 have the same polarity, and during the insertion of the end plug 1 into the channel, the first magnetic body 13 is away from the plug end 21 and passes over the second magnetic body 22 in the axial direction. Thus, at the initial stage of plugging the end plug 1 into the channel, the end plug will be subjected to a certain repulsion force, and as the plugging proceeds, the repulsion force between the first magnetic body 13 and the second magnetic body will push the end plug 1 into the channel after the first magnetic body 13 has passed the second magnetic body 22 in the axial direction. The channel blocking assembly will have a self-ejecting function when the end plug 1 is removed.

Further, between the front end 11 and the rear end 12, the end plug 1 is provided with the first magnetic body 13, specifically, the outer peripheral wall of the end plug 1 is provided with the first magnetic body 13, the number of the first magnetic bodies 13 may be one or a plurality of, and when the number of the first magnetic bodies 13 is a plurality, the arrangement positions thereof are the same in the axial direction of the end plug 1, that is, the plurality of first magnetic bodies 13 are not dislocated in the axial direction, it can be understood that when the end plug is in a cylindrical shape, the plurality of first magnetic bodies 13 are located on the same circumferential line. The second magnetic body 22 is provided on the inner peripheral wall of the cigarette case 2, and one or a plurality of second magnetic bodies 22 may be provided. When there are a plurality of second magnetic bodies 22, the arrangement positions thereof are the same in the axial direction of the cartridge 2, that is, the plurality of second magnetic bodies 22 are not displaced in the axial direction. It will be appreciated that when the cartridge is cylindrical, the plurality of second magnetic bodies 22 are located on the same inner circumference of the cartridge.

In the above embodiment, the polarities of the plurality of first magnetic bodies are different, and correspondingly, the polarities of the plurality of second magnetic bodies are different, but the polarities of the first magnetic bodies are the same as the polarities of the corresponding second magnetic bodies in the channel. For example, if the number of the first magnetic bodies is two, i.e., S-level and N-level, two second magnetic bodies, i.e., S-level and N-level, may be disposed in the channel, and the user plugs the end plug in a specific direction, the S-level first magnetic body corresponds to the S-level second magnetic body, and the N-level first magnetic body corresponds to the N-level second magnetic body.

Preferably, the plurality of first magnetic bodies 13 have the same polarity toward the outside, and since the first magnetic bodies 13 are fixed to the outer wall of the end plug 1, the first magnetic bodies 13 may have the same polarity toward the outside, for example, all have S-level. The plurality of second magnetic bodies 22 have the same polarity, and the second magnetic bodies 22 are fixed to the inner wall of the cigarette case 2, and therefore, the polarities thereof may be, for example, S-level. In the present embodiment, the first magnetic body 13 has the same polarity as the second magnetic body 22, and is, for example, both of S-level or both of N-level. In this embodiment, the distance between the first magnetic body 13 and the rear end 12 is greater than the distance between the second magnetic body 22 and the insertion end 21 in the axial direction.

With reference to figures 4A to 4D, with the arrangement of the end plug 1 and the in-channel structure in the above described embodiment, when a user loads the end plug 1 into the cartridge 2, the end plug will be subjected to a magnetic force towards the right as shown in figure 4B, in the very loading phase, due to the same polarity of the first magnetic body 13 and the second body 22, and to a repulsive force, opposite to the loading direction; as the first magnetic body 13 gradually approaches the second magnetic body 22 until the first magnetic body 13 gradually moves away from the second magnetic body 22 and the plugging end 21 after passing over the second magnetic body 22, the first magnetic body 13 will be subjected to a magnetic force in the leftward direction as shown in fig. 4D, and at this time, the magnetic force is in the same direction as the loading direction, and the user will feel a propulsive force to facilitate the loading of the end plug 1 into position.

Referring to fig. 5A to 5D, when the user detaches the end plug 1, the first magnetic body 13 on the end plug 1 is firstly subjected to a magnetic field force in the left direction as shown in fig. 5A, which is opposite to the detaching direction; as the first magnetic body 13 gradually approaches the second magnetic body 22, until the first magnetic body 13 gradually leaves the second magnetic body 22 after passing over the second magnetic body 22 and approaches the plug-in end 21, the first magnetic body 13 receives a magnetic field force in a right direction as shown in fig. 5C, and at this time, the magnetic field force is the same as the removal direction, and a user may receive a propulsion force to facilitate the removal of the end plug 1.

For example, when the second magnetic body 22 is arranged on the inner wall of the channel, the distance between the first magnetic body 13 and the rear end 12 is larger than the distance between the second magnetic body 22 and the insertion end 21, after the end plug 1 is inserted into the cigarette chamber 2, the first magnetic body 13 has passed over the second magnetic body 22 and is located at a position farther from the insertion end 21 than the second magnetic body 22, that is, is located more inside the cigarette chamber 2 than the second magnetic body 22, so that after the end plug 1 is inserted into the cigarette chamber, the end plug 1 is always pushed by the second magnetic body 22 to the inside of the cigarette chamber. This pushing force into the interior of the cartridge 2 can on the one hand be felt by the user when inserting the end plug 1 and on the other hand also be used to keep the end plug 1 located inside the cartridge 2 without detaching by means of magnetic forces after insertion of the end plug 1.

Further, the outer peripheral wall of the end plug 1 is provided with a first threaded portion 14, and the inner wall of the cartridge 2 is provided with a correspondingly positioned engaging portion 23 which engages with the first threaded portion 14, so that the detachable connection is achieved by screwing the end plug 1 into or out of the cartridge 2 when the end plug 1 is loaded into the cartridge 2.

Further, in the above embodiment, the first screw portion 14 is located between the first magnetic body 13 and the rear end 12. After the end plug 1 has been partially installed in the cartridge 2, the initial position of engagement of the first threaded portion 14 and the engagement portion 23 is reached, after which the user can screw in again to complete the installation of the end plug 1.

In the above embodiments, the end plug 1 is inserted into the cartridge 2 from the insertion end 21 from the front end 11 thereof, and as the insertion proceeds, the first threaded portion 14 reaches the initial position of the screw-in engagement portion 23, and the first magnetic body 13 is located at the first position in the axial direction, which is closer to the insertion end 21 than the second magnetic body 22, that is, the first magnetic body 13 is also gradually closer to the second magnetic body 22 and does not go beyond the second magnetic body 22. At this time, when the user starts the screwing action and the first magnetic body 13 is moved in the axial direction to the second position, which is farther from the insertion end 21 than the second magnetic body 22 from the insertion end 21, at the end position where the first threaded portion 14 is completely screwed into the engagement portion 23, that is, when the screwing action is completed, it means that the first magnetic body 13 has passed over the second magnetic body 22, that is, the state in fig. 4D.

The first position and the second position represent positions before and after the first magnetic body 13 and the second magnetic body 22 meet each other in the process of assembling the end plug 1, the process of changing the magnetic field force from the resistance to the propulsion force in the process of assembling the first magnetic body 13 from the first position to the second position is a process of changing the resistance to the propulsion force in the process of assembling the end plug 1, the resistance is gradually increased, the propulsion force is changed after the first magnetic body 13 and the second magnetic body 22 meet each other, in the process, a user finishes screwing the screw thread, so that the blocking force cannot be obviously sensed, the screwing process is convenient, after the end plug is completely screwed in, the end plug 1 can receive the pushing force, and the user can sense that the end plug 1 is pushed in place.

By using the above embodiment, when the end plug 1 is removed, firstly, the user performs the unscrewing action through rotating the end plug, so as to move the first magnetic body 13 from the second position to the first position, in the process, the end plug 1 can receive the resistance opposite to the removing direction, and the resistance gradually becomes larger, the first magnetic body 13 and the second magnetic body 22 can become the propelling force for pushing and removing after meeting, in the process, the user is completed through the unscrewing action, so that the blocking force cannot be sensed very obviously, after the rotating action is finished, the end plug 1 already receives the propelling force consistent with the removing direction at the moment, which is equivalent to reminding the user that the rotating action is finished, and the end plug 1 can be directly removed. At the same time the end plug 1 will also have an automatic ejection effect when pulled out.

The arrangement of the above embodiment will therefore allow the user to perform more expedients in the actions of end plugging and in and out.

In the above embodiment, the pitch of the first threaded portion 14 is greater than or equal to the distance between the first position and the second position. The pitch is an axial distance advanced by one rotation, and in the present embodiment, the pitch of the first threaded portion 14 is set to be greater than or equal to the distance between the first position and the second position, so that the user can complete the movement of the first magnetic body 13 from the first position to the second position when the plug is rotated one or less times, which is simpler and more comfortable to use than the movement of rotating several turns.

The specific arrangement of the first position and the second position may be set according to actual needs as long as the second magnetic body 22 is located between the first position and the second position in the axial direction. In this embodiment, the first position may be set to a position where the first magnetic body 13 and the second magnetic body 22 are about to meet in the process of installing the end plug 1, refer to fig. 4B, that is, a position where the left end of the first magnetic body 13 is connected to the right end of the second magnetic body 22 in fig. 4B, the second position may be set to a position where the second magnetic body 13 is just about to leave the second magnetic body 22, refer to fig. 4C, that is, a position where the left end of the first magnetic body 13 and the left end of the second magnetic body 22 completely overlap in the radial direction in fig. 4C. That is, in the present embodiment, the distance between the first position and the second position is just the projection length of the second magnetic body 22 in the axial cross section, and in combination with the above embodiment, the pitch P of the thread can be set to be P ≧ the projection length of the second magnetic body in the axial cross section.

In the above embodiment, when the threaded connection is loose, the effect of the magnetic force can also ensure that the end plug 1 is pushed into the cigarette cabin 2 in place without being detached. A mechanical locking structure exists between the end plug 1 and the channel, and the freedom degree of the end plug to withdraw towards the outside of the channel can be limited. The locking structure has the detachability of reciprocating motion. And a non-deformation locking contact mode is used, so that the locking performance reduction caused by abrasion after multiple times of disassembly is prevented.

In the above embodiments, the number of the first magnetic bodies may be plural, preferably 2 to 4, and the first magnetic bodies are distributed at equal angles along the cross section. When the number of the first magnetic bodies is 2, the first magnetic bodies can be symmetrically arranged on two sides of the end plug. Accordingly, the number of the second magnetic bodies is preferably the same as the number of the first magnetic bodies, and the arrangement positions and distribution of the second magnetic bodies also correspond to those of the first magnetic bodies. The first magnetic body may be mounted by, for example, snap-fitting, interference-fitting, bonding, or secondary injection molding. The second magnetic body can be fixedly connected with the channel in the way of being arranged in the channel,

preferably, in each of the above embodiments, the first threaded portion is an external thread, and the engagement portion is an internal thread. Further, the first threaded portion and the engagement portion are double-start threads or multi-start threads. Further, the first threaded portion is a partial thread, and the engagement portion is a full thread.

In the embodiments described above, with reference to figure 11, an air guiding gap 15 is provided between the end plug 1 and the channel. In particular, for example in the position indicated in figure 1, the side walls of the end plug 1 are cut away in the axial direction to form cut surfaces 16, so that after the end plug 1 is inserted into the cartridge 2, there is an air-guiding gap 15 between it and the cartridge, so that the air flow passes through the air-guiding gap, running axially through the cartridge 2. The direction indicated by the arrow in fig. 11 is the direction of flow of the air through the air guide gap 15. Further, at least a part of the peripheral wall of the end plug 1 forms the above-mentioned air guide gap 15, and the remaining part of the peripheral wall is sealingly connected to the cartridge 2, e.g. in fig. 6, the other peripheral parts than the air guide gap 15 are in a sealed condition, thereby preventing condensate and residue in the cartridge 2 from falling out.

The present invention also provides an aerosol generating device comprising a channel blocking assembly according to each of the embodiments described above, wherein the channels in the blocking assembly act as a cartridge in the aerosol generating device and can be used to contain and heat an aerosol generating substrate. Thereby, through setting up the detachable end plug, can tear out the end plug clean when needs clear up the tobacco storehouse, and pack into the end plug when using to aerosol production substrate in the tobacco storehouse, for example cigarette props up and carries on spacingly.

The aerosol generating device of the above embodiment has the further advantage that for cigarettes of different lengths, existing heated smoking sets all need to be adapted, i.e. one smoking set matches a cigarette of one length. And through the arrangement of the end plugs in the embodiment, for longer cigarettes, the end plugs can be used shorter, and for shorter cigarettes, the end plugs can be replaced by shorter end plugs, so that the whole smoking set does not need to be replaced. Alternatively, in other embodiments, instead of replacing the end plug, a telescopic end plug may be used, and the length of the end plug may be adjusted to accommodate cigarettes of different lengths, for example, by providing a threaded fit on the end plug, or by using an elastic member to snap fit, etc.

Referring to figures 7 to 10, the aerosol generating device of the present invention comprises a housing 3 and a cartridge 2 located within the housing 3, the cartridge 2 being for receiving and heating an aerosol-generating substrate and being formed by a multi-segment terminal extension, the cartridge 2 having an axial direction, for example the x-direction in figure 7, and a radial direction, perpendicular to the axial direction, for example the y-direction in figure 7. The cigarette magazine 2 extends axially and is directed outside the housing 3, the cigarette magazine 2 having the same dimension in the radial direction in the above-mentioned axial direction. That is, there is no portion of the entire cartridge 2 having a changed inner diameter, extending in the axial direction with a constant diameter.

In the prior art, the cigarette bin is arranged to be a part with variable diameters so as to limit the cigarette accommodated in the cigarette bin, but the variable diameter arrangement can cause sanitary dead angles and is not easy to clean. The inner diameter of the cigarette bin 2 is unchanged, the whole cigarette bin 2 is communicated from top to bottom and is communicated to the outside of the shell 3, correspondingly, the bottom of the cigarette bin is provided with the end plug 1 to limit cigarettes, and meanwhile, the cigarette bin 2 is properly plugged, so that residues such as cigarette ash and the like are prevented from falling.

The cigarette bin 2 is formed by extending a plurality of sections of end joints, namely the plurality of sections are mutually independent to be disconnected and are not integrally formed, the plurality of sections are communicated through end connection, the inner diameters of the plurality of sections are the same, the inner diameter of the integrally formed cigarette bin cannot be changed, and the heat blocking effect can be achieved through the extending form of the plurality of sections of end joints. The multistage including the storehouse 24 that generates heat and the storehouse 25 that extends that is equal with the storehouse internal diameter that generates heat in this embodiment, extend the one end of storehouse 25 and the one end of the storehouse 24 that generates heat and be connected along axial alignment, extend the outside of the direct casing 3 of the other end of storehouse 25.

Through the storehouse 24 and the storehouse 25 termination setting of extending of heating, compare in the storehouse of heating and extend storehouse integrated into one piece setting, can effectively reduce the heat in the storehouse 24 of heating and to extending storehouse 25 transmission, avoid extending the storehouse 25 on the one hand overheated, on the other hand also can reduce the calorific loss in the storehouse 24 of heating.

Further, the extension bin 25 includes an extension pipe 251 and an insulation pipe 252 axially located between the extension pipe 251 and the heating bin 24, and two axially opposite ends of the insulation pipe 252 are respectively in end communication with the heating bin 24 and the extension pipe 251. The heating bin 24, the heat insulation pipe 252 and the extension pipe 251 are communicated to form a linear pipeline to form the cigarette bin 2, and the cigarette bin 2 can be cylindrical or prismatic. The heat transfer is further reduced by terminating the insulated conduit 252 and the extension tube 251 such that the heat transfer path is again interrupted twice from the heat generation compartment 24 to the insulated conduit 252 and then to the extension tube 251.

In the above embodiment, the extension tube 251 extends axially to the bottom of the housing 3, so that the entire cartridge 2 extends to the bottom of the housing 3. In this way, the entire cartridge 2 is completely isolated from other components (e.g., circuit board, battery, etc.) within the housing 3 by the peripheral wall, so that during use of the aerosol generating device, the soot, condensate, or tobacco residue formed within the cartridge 2 simply falls through the bottom of the cartridge 2 to the exterior of the housing 3, and does not fall into other components within the housing 3 to cause corrosion. The end plug 1 is located at the bottom of the housing 3, plugged in and removable from the extension tube 251. Air guide gaps 15 are provided on the side walls of the end plugs 1 between the casing 3 and the cartridge 2 for the circulation of air flow.

In the above embodiments, the specific heat capacity of the material of the inner wall of the heat insulation pipe 252 is greater than the specific heat capacity of the material of the inner wall of the heat generation chamber 24. The heating chamber 24 is used as a component for heating the aerosol generating substrate, the inner wall material of the heating chamber has good thermal conductivity, for example, the heating chamber 24 can be a metal tube, the inner wall can be made of materials such as aluminum, stainless steel, permalloy, copper and the like, the outer wall of the heating chamber 24 contains a heating layer which can be a resistance heating net/wire, a thick film heating layer or other heating coatings, and the inner wall of the heating chamber is smooth and can further be a linear pipeline. The material of the inner wall of the heat insulation pipe 252 is different from the material of the inner wall of the heating bin 24, and the specific heat capacity of the heat insulation pipe 252 is larger, so that the heat absorbed by the extension pipe 251 is less, the temperature of the extension pipe 251 is lower, the temperature of the bottom of the shell 3 is prevented from being higher due to the higher temperature of the extension pipe 251, and the heat loss of the heating bin 24 can be reduced. Specifically, the material of the inner wall of the heat insulation pipe is selected from one of PEEK, polyimide, ceramics or encapsulation treatment, and the materials belong to high temperature resistant materials.

The aerosol generating device in each of the above embodiments further comprises an upper end cap 26, one end of the upper end cap 26 is connected to the upper end of the heat generating chamber 24, the other end extends and is connected to the top of the housing 3, and the aerosol generating substrate can be fed into the heat generating chamber 24 from the upper end cap 26 to be heated. The filter end of the aerosol-generating substrate may protrude from the upper end cap 26 for inhalation by a user. In this embodiment, the heat insulation pipe 252 forms a lower end cap, and clamps the heat generation chamber 24 together with the upper end cap 26. The upper end cap 26 and the lower end cap are made of one material selected from PEEK, polyimide, ceramic or encapsulation, and can serve as a heat insulation.

Referring to figures 7 to 15, the present invention provides an aerosol generating device comprising a cartridge 2 and a thermal insulation assembly, the cartridge 2 being for receiving and heating an aerosol-generating substrate. The insulation assembly comprises a first insulation, such as a vacuum insulation 41, a secondary insulation 42 and a housing 3. The housing 3 serves both as an outer packaging part of the aerosol generating device and as a thermal insulation. Further, the housing 3 includes an inner jacket 31 and an outer jacket 32. As shown in fig. 7 and 8, the vacuum heat insulation member 41 is sleeved on the periphery of the smoke chamber 2, the secondary heat insulation member 42 is sleeved on the periphery of the vacuum heat insulation member, and the secondary heat insulation member 42 is embedded in the inner sleeve 31 and is wrapped by the inner sleeve 31 for heat insulation. The outer shell 32 is disposed around the inner shell 31, and has a first thermal insulation gap 33 with the inner shell 31. As shown in fig. 6, the outer casing 32 entirely surrounds the inner casing 31, and a first insulation gap 33 exists between the inner wall of the outer casing 32 and the outer wall of the inner casing 31.

The existing heat insulation mode for the smoking set can make the shell have larger volume, so that a larger gap exists between the shell and the heating bin to form a thicker air layer, thereby realizing effective separation from heat. The present invention seeks to achieve a good thermal insulation effect while satisfying the miniaturization of an aerosol generating device. In addition, the installation mode is simplified, the structural complexity of the smoking set is not excessively increased, and the improvement direction of the aerosol generating device is also improved.

Therefore, the aerosol generating device of the embodiment combines a five-part structure to realize heat insulation. (1) The vacuum heat insulation piece 41 is wrapped on the periphery of the cigarette bin 2, and the interior of the vacuum heat insulation piece 41 is in a vacuum state, so that an excellent heat insulation effect can be achieved; (2) the secondary heat insulation piece 42 wraps the outside of the vacuum heat insulation piece 41, so that the heat insulation effect is further enhanced; (3) by utilizing the structural characteristics of the shell, an inner sleeve for fixing each component in the shell 3 is also used as one of the heat insulation components to wrap the cigarette chamber 2, the vacuum heat insulation part 41 and the secondary heat insulation part 42; (4) the outer casing 32 at the outermost layer of the shell 3 can still achieve the heat insulation effect; (5) the first heat-insulating gap provided between the outer shell 32 and the inner shell 31, that is, the air layer functions as a good heat insulator. Practice proves that compared with a mode of singly adopting an air layer as a heat insulation layer or totally adopting a rigid heat insulation piece to nest layer by layer for heat insulation, the mode of combining vacuum heat insulation, rigid heat insulation piece heat insulation and air layer heat insulation can obtain better heat insulation effect under the same heat insulation volume. Compared with the heat insulation mode of simply increasing the nesting number of the heat insulation pieces by simply increasing the air heat insulation layer, the heat insulation assembly of the embodiment is small in size, simple in structure and more convenient to install.

Can use the support to fix the inside subassembly of casing in the casing in current smoking set, the usable interior cover shell of this embodiment realizes the fixed to the subassembly, and the design of parcel formula can carry out the separation to the heat of cigarette storehouse simultaneously, realizes that internal battery and circuit board part separate with cigarette storehouse 2, kills many birds with one stone. And if the mode that only increases the heat insulating part number of parcel tobacco house alone insulates against heat, can make the volume of tobacco house one side great, the opposite side has too much space not used for whole smoking set inner assembly distributes unevenly, and the structure is compact inadequately.

The aerosol generating device of the embodiment has excellent heat insulation effect, and the key point is to combine the five parts structure to make the heat conduction path discontinuous. Particularly, the heat from the cigarette bin needs to pass through the vacuum heat insulation piece first, and then passes through the separation of the secondary heat insulation piece and the inner sleeve shell after penetrating through the vacuum structure, and the heat is discontinuously transferred because the secondary heat insulation piece and the vacuum heat insulation piece, and the inner sleeve shell and the secondary heat insulation piece are disconnected and not integrally formed, and then the air layer between the inner sleeve shell and the outer sleeve shell is used as another transfer medium to further reduce the heat transfer efficiency, and finally is separated by the outer sleeve shell to block most of heat transfer. The combination of the five parts of structures ensures that the medium for heat transfer is discontinuous, the transfer medium which is changed for many times reduces the heat transfer efficiency, strengthens the heat insulation effect and delays the temperature rise speed of the surface of the outer casing.

Further, with continued reference to fig. 7, a second insulation gap 43 exists between the inner wall of the vacuum insulation 41 and the outer wall of the cigarette case 2, i.e., an air layer is provided between the vacuum insulation 41 and the cigarette case 2 for heat insulation. Furthermore, the two ends of the second insulating gap 43 in the axial direction are closed, so that the second insulating gap 43 serves as an air layer in which air flows less, thereby preventing a large amount of air from flowing to take away heat in the smoke chamber 2 and reducing heat loss. In this embodiment, the closing of the two ends of the second insulating gap 43 may be to appropriately close the openings of the two ends to reduce the air circulation, and preferably, the two ends of the second insulating gap 43 are completely closed, i.e., in a sealed state, so that the air cannot circulate in the second insulating gap 43. The completely sealed second heat insulation gap 43 can play a role in heat insulation and also can play a role in heat preservation of the cigarette bin. Specifically, sealing members may be provided at both ends of the vacuum heat insulating member 41 in the axial direction opposite to the smoke box 2, for example, as shown in fig. 7, a first sealing member 44 is provided to close an upper port of the second heat insulating gap 43, and a second sealing member 45 is provided to close a lower port of the second heat insulating gap 43.

The arrangement of the heat insulation assembly of the embodiment enables the aerosol generating device to achieve excellent heat insulation effect without being large in size. The thickness of the air layer in the conventional smoking set is larger, while the thickness of the first heat insulation gap of the invention can be 0.1-10mm, the thickness of the second heat insulation gap can be 0.2-10mm, and the sizes of the first heat insulation gap and the second heat insulation gap can also ensure the heat insulation effect within the range. Preferably, the first insulating gap has a thickness of 0.2-5mm and the second insulating gap has a thickness of 0.3-6 mm.

The first heat insulation gap 33 is formed by the outer jacket 32 being fitted around the outer circumference of the inner jacket 31, and the volume of the outer jacket 32 being larger than the volume of the inner jacket 31. Furthermore, a plurality of bump structures are arranged on the outer wall of the inner sleeve shell or the inner wall of the outer sleeve shell, so that the contact limit between the inner sleeve shell and the outer sleeve shell is realized. In this embodiment, referring to fig. 6, the inner housing 31 is provided with a plurality of bump structures 34 on the outer wall as contacts for the outer housing 32 to contact and limit. By providing the bump structures 34, the freedom of the inner jacket 31 in four directions, front, rear, left, and right, in the space of the outer jacket 32 can be restricted, and a stable assembly position can be formed. In addition, the bump structures 34 ensure that a first heat insulation gap 33 is reserved between the inner shell 31 and the outer shell 32. In consideration of the stability of contact positioning, the bump structures of the present embodiment may be 2, or more than 2, and further more than 4. The four surfaces of the outer wall of the inner casing 31 or the four surfaces of the inner wall of the outer casing can be selectively provided with salient point structures, the salient point structures can be selectively arranged on two or more surfaces of the outer wall of the inner casing, and preferably, the salient point structures 34 are uniformly distributed on the four surfaces of the outer wall of the inner casing 31. Alternatively, the four faces of the inner wall of the outer casing may be provided with the bump structures.

In the above embodiment, the bump structures 34 are in the shape of stripes or dots, and the contact area between each bump structure 34 and the outer casing 32 is not less than 0.5mm²。

In the above embodiments, the inner housing 31 comprises a front inner housing shell 311 and a rear inner housing shell 312, the front inner housing shell 311 and the rear inner housing shell 312 are butted to form a cavity for accommodating and clamping the cigarette chamber and the rest of the components in the housing. The inner casing 31 is the mounting base for the inner components that house the cartridge 2 and the remaining components, such as the vacuum insulation 41, the secondary insulation 42, the circuit board 51, the inner key portion 61, the battery 52, the battery retaining foam 53, etc. After the inner shell 31 is locked, all the internal components can completely limit the degree of freedom, and complete positioning is achieved.

The inner sleeve shell 31 is used for wrapping the cigarette bin 2 and is installed, the outer sleeve shell 32 is integrally installed, the inner sleeve shell 31 is clamped by installation clamping after the outer sleeve shell 32 and the inner sleeve shell 31 are contacted through the salient point structures 34, the inner sleeve shell 31 is restrained by the inner wall of the outer sleeve shell 32, and the problem that gaps are inconsistent due to expansion caused by heat and contraction caused by cold of materials and the stress of the processing technology is solved. After the inner shell 31 and the outer shell 32 are assembled, the bump structures play a role in locking the assembling relationship.

In the above embodiments, the material of the vacuum heat insulator and the secondary heat insulator is preferably a heat insulator resistant to high temperature, and may be, for example, PEEK or stainless steel. The inner casing can be made of ABS, PC or PEEK or a mixture of ABS, PC and PEEK, and glass fiber marks can be added to manufacture the inner casing. The outer casing comprises at least one material selected from metals such as aluminum alloy, zinc alloy, etc.; it can also be made of plastics, such as one or more of PC, ABS and nylon, and glass fiber brands, or can be made of plastics and metals by sleeving, plastic coating, and secondary injection molding.

In each of the embodiments described above, the cartridge 2 is adapted to receive and heat the aerosol-generating substrate, for example by peripheral heating or needle heating. For example, in the present embodiment, referring to FIG. 7, the cartridge 2 is formed by a multi-segment end extension, including the heat-generating cartridge 24, the extension tube 251, and the insulating tube 252. Since only the heat generation chamber 24 generates heat, the vacuum insulation member 41 and the secondary insulation member 42 may wrap only the outer periphery of the heat generation chamber 24, and the extension pipe 251 may protrude in the axial direction with respect to the vacuum insulation member 41 and the secondary insulation member 42. And the second insulation gap between the smoke bin 2 and the vacuum insulation 41 is actually a gap between the outer wall of the heat generating bin 24 and the inner wall of the vacuum insulation.

Referring to fig. 7 and 8, the aerosol generating device in each of the above embodiments further comprises an upper end cap 26, one end of the upper end cap 26 is connected to the upper end of the heat generating chamber 24, and the other end extends and is connected to the top of the housing 3, so that the aerosol generating substrate is fed from the upper end cap 26. The heat insulation pipe 252 forms a lower end cover, and clamps the heating chamber 24 together with the upper end cover 26, so as to ensure that the heating chamber 24 is located inside the housing 3. The upper end cap 26 and the vacuum heat insulator 41 are attached, positioned and sealed by the first seal 44 and the upper heat-generating chamber positioning sleeve, and the heat insulating pipe 252 and the vacuum heat insulator 41 are attached, positioned and sealed by the second seal 45 and the lower end cap sheath 47, thereby sealing both ends of the second heat insulating gap in the axial direction. Preferably, the first seal 44 and the second seal 45 are made of silicone, and the heat conduction speed is reduced by the soft rubber while the seal is formed.

Extension cartridge 25 remains entirely within housing 3 and extension tube 251 may be provided as an extension that does not contain a cigarette or, when a cigarette is longer, a portion of the cigarette may extend from heat-generating cartridge 24 to extension tube 251. The limit of the cigarettes in the cigarette bin 2 is realized by plugging the end plugs 1 into the extension tubes 251. The heating chamber 24 in this embodiment can be a heating tube, the thermal insulation tube 251 and the extension tube 252 have the same inner diameter as the heating chamber 24, and the three are aligned and connected in the axial direction to form a straight-through structure, which is convenient for cleaning.

The invention provides a shell component which can be used for an aerosol generating device and is used for assembling and fixing internal components such as a cigarette chamber, a vacuum heat insulation piece, a secondary heat insulation piece, a battery and the like in the embodiments.

Referring to fig. 12 to 15, the housing assembly of the present embodiment includes the housing 3 and the key mechanism, the housing 3 includes the inner casing 31 and the outer casing 32, and the inner casing 31 and the outer casing 32 of the present embodiment can play a role of fixing the inner assembly in addition to the above-mentioned heat insulation role. The key mechanism comprises an outer key part 62 and an inner key part 61, the outer casing 32 and the inner casing 31 are respectively provided with a first through hole 35 and a second through hole 36 which are oppositely arranged along a first installation direction, the inner key part 61 is at least partially embedded in the second through hole 36, and the outer casing 32 is sleeved on the periphery of the inner casing 31. The outer key portion 62 is butted against the inner key portion 61 through the first and second through

holes

35 and 36 in the above-mentioned first mounting direction, and thus, the key mechanism constitutes a latch structure for preventing the outer jacket 32 from being separated from the inner jacket 31.

The locking of the outer jacket 32 can be achieved after the installation of the outer key portion 62 is completed by a latch structure formed by the key mechanism. Since the outer jacket 32 is fitted around the outer circumference of the inner jacket 31 in the second mounting direction, the outer key portion 62 forms a pin lock structure after being mounted, so that the outer jacket 32 is restricted in freedom in the second mounting direction without being separated from the inner jacket 31 in the second mounting direction. The second mounting direction is, for example, the x direction in fig. 15. The outer jacket 32 includes a first outer jacket 321 and a second outer jacket 322, and the first outer jacket 321 and the second outer jacket 322 are respectively sleeved on the periphery of the inner jacket 31 along two opposite directions of the second mounting direction, so as to realize the butt joint.

The specific installation sequence of the shell component is as follows: the inner key portion 61 is mounted in the inner housing 31 and connected to the circuit board 51, and the front inner housing 311 and the rear inner housing 312 are abutted to hold the components inside the inner housing 31. Then, the first outer jacket 321 and the second outer jacket 322 of the outer jacket 32 are butted against each other, and are sleeved on the outer circumference of the inner jacket 31 along two opposite directions in the second mounting direction. Then, the outer key portion 62 is mounted on the housing 3 in the first mounting direction and is fixed in abutment with the inner key portion 61. The first mounting direction is, for example, the z direction in fig. 16. After the outer key portion 62 is mounted, the outer shell 32 cannot be removed from the inner shell 31 without removing the outer key portion 62. Meanwhile, the outer key part 62 is also fixed by being engaged with the inner housing 31 so that the outer key part 62 is not excessively recessed or removed with respect to the first through hole 35 and the second through hole 36. So, can accomplish outer shell 32 for the fixed of interior cover shell 31, avoid beating the operation of gluing, cancel and beat and glue the pressurize time, promote to produce and go up efficiency, improve degree of automation. The user of the key mechanism is not easy to disassemble, and then the outer sleeve shell and the inner sleeve shell are also inconvenient to disassemble, so that the limiting and anti-disassembling function is realized.

The "outer" and "inner" of the outer key section 62 and the inner key section 61 in the above-described embodiment are relative concepts, that is, the outer key section 62 is located relatively outside, and the inner key section 61 is located more inside in the housing assembly than the outer key section 62. The inner key part 61 of the present invention is at least partially positioned in the second through hole 36 so as to be closer to the circuit board 51, the battery 52, the cigarette case 2, etc. in the inner housing 31 and to transmit more heat, and the outer key part 62 is not integrally formed with the inner key part 61, so that even if the inner key part 61 absorbs heat, the heat transmission after being transmitted to the outer key part 62 is significantly reduced. It has been proved that the key mechanism of the present invention comprising two independent outer key portions 62 and inner key portions 61 can effectively reduce the temperature of the key appearance surface on the outer casing 32, and the user does not feel hot when pressing the outer key portions 62, as compared to the case where only one key structure is provided on the outer casing assembly.

As described above, while the outer jacket 32 abuts against the outer periphery of the inner jacket 31 through the bump structures 34 on the inner jacket 31, that is, after the outer jacket 32 is sleeved and abutted against the inner jacket 31, a proper pressure is applied to the inner jacket 31, and since the inner jacket 31 includes the front inner jacket 311 and the rear inner jacket 312, the outer jacket 32 is locked, so that the front inner jacket 311 and the rear inner jacket 312 are also bound and cannot be separated, and the outer jacket 32 and the inner jacket are locked by the locking action of the key mechanism.

Further, after the outer key portion 62 and the inner key portion 61 are butt-fitted in place, the outer key portion 62 is fixed in position, and is not completely sunk into the inner jacket 31, nor is it separated from the inner key portion 61 and completely removed from the outer jacket 32, ensuring that the latch function is effective.

Specifically, referring to fig. 14, the inner key portion 61 is mounted inside the inner jacket 31 and fixed. The front inner housing 311 and the rear inner housing 312 are clamped by the outer housing 32, and a portion of the end surface of the inner key portion 61 is covered by the inner side of the inner housing 31, and another portion is exposed through the second through hole 36, so that the inner housing 31 abuts against the inner key portion 61, and the inner key portion 61 abuts against the circuit board in the housing 3, thereby fixing the inner key portion 61. The outer key portion 62 is engaged with the housing 3 or the inner key portion through the first and second through

holes

35 and 36 in the first mounting direction to prevent the outer key portion 62 from coming out of the outer casing 32, i.e., the outer key portion 62 is engaged with the outer casing, or the inner key portion, to restrict its movement in a direction opposite to the first mounting direction, e.g., in fig. 14, i.e., to restrict its movement to the left. Since the outer key portion 62 abuts against the inner key portion 61, the inner key portion 61 is fixed, so that the outer key portion 62 is also restricted from moving further in the first mounting direction, for example, to the right in fig. 14.

Further, the outer key portion 62 has a first clamping portion for clamping, for example, one or more clamping hooks 63, and after the first clamping portion is mounted in place, the clamping hooks 63 protrude toward the inside of the housing 3. The housing or the inner key portion is provided with a second clamping portion correspondingly matched with the first clamping portion, and the second clamping portion is, for example, a groove 64 correspondingly matched with the clamping hook 63. The outer key part 62 cannot be pulled out of the outer casing through the clamping limit of the clamping hook 63 and the groove 64. More specifically, as shown in fig. 14, the groove 64 is located inside the second penetration hole 36, that is, the groove 64 is provided inside the inner jacket 31, more specifically, around the hole wall of the second penetration hole 36 of the inner jacket 31. The placement of the groove 64 inside the second aperture 36 facilitates maintaining the relative positional relationship of the outer and inner key portions without the appearance of structural features on the exterior surface of the jacket. Accordingly, the hook 63 is provided on the periphery of the outer key portion 62. The outer key part 62 has an open end 621, the open end 621 is connected to the inner key part 61, and the hook 63 is provided at the open end 62.

In the above embodiments, the hook 63 is an elastic wall hook, that is, the extension arm of the hook 63 has elasticity and can deform properly, which is beneficial for the hook 63 to be embedded into the second through hole 36 and hooking the groove 64 back.

In the above embodiments, the outer casing 32 is sleeved on the inner casing 31 along a second mounting direction, and the first mounting direction is not parallel to the second mounting direction. That is, the first mounting direction forms an angle with the second mounting direction. Further, the first mounting direction is substantially perpendicular to the second mounting direction. Substantially perpendicular includes a first mounting direction perpendicular to a second mounting direction, and also includes errors that are modest in manufacturing in the art. At this time, the included angle between the first installation direction and the second installation direction is substantially 90 degrees, including the included angle is 90 degrees and within an allowable error range.

In each of the above embodiments, the inner key portion 61 further includes a first light guiding assembly 65, the first light guiding assembly 65 has a plurality of independent first light guiding portions 651, the plurality of first light guiding portions 651 are in one-to-one correspondence with the plurality of light emitting assemblies in the housing 3, for example, the circuit board 51 is provided with a plurality of light emitting assemblies, each light emitting assembly corresponds to one first light guiding portion 651 for guiding light, the outer key portion 62 is provided with a plurality of light transmitting holes 622 corresponding to each first light guiding portion 651 for transmitting light, and each first light guiding portion 651 transmits light emitted by the light emitting assembly through the corresponding light transmitting hole 622 for observation. The inner key part 61 of the invention is provided with a plurality of through holes 611 extending from inside to outside, a plurality of first light guide parts 651 are embedded into the through holes 611 of the inner key part 61, and because the through holes 611 are mutually spaced, the embedded first light guide parts 651 are mutually spaced by the inner key part 61, thus the light rays conducted by the first light guide parts 651 cannot influence each other, and the light rays penetrate through the light transmission holes 622 independently, so that the mutual interference of a plurality of light rays is avoided, and the user can observe the state changes of the color, the lighting quantity and the like of the indicator light conveniently.

Further, the outer key portion 62 further includes a second light guide assembly 66, the second light guide assembly 66 has a plurality of independent second light guide portions 661, the plurality of second light guide portions 661 correspond to the plurality of first light guide portions 651 one to one, and the second light guide portions 661 are configured to transmit light from the first light guide portions 651 to the corresponding light transmission holes 622. In other embodiments, when the inner key portion and/or the outer key portion are thin and the light guide member is not easy to mount, the light guide member may not be mounted, and the light guide point may be implemented by using a mode of forming a thin-wall light-transmitting insert by local glue reduction, punching, and secondary injection molding of the light-transmitting insert.

In the above embodiments, the outer key portion and the inner key portion are connected without a gap, so that the outer key portion and the inner key portion move synchronously. Specifically, the gapless connection is a magnetic connection, a tight fit connection, a snap connection or a dispensing connection. When magnetic connection is selected, the outer magnetic body 623 and the inner magnetic body 612 can be respectively arranged on the outer key part 62 and the inner key part 61. The inner magnetic body 612 is fixed to the inner key portion 61, the outer magnetic body 623 is fixed to the outer key portion 62, and the outer key portion 62 is abutted with the inner key portion 61 by abutting the inner magnetic body 612 and the outer magnetic body 623.

In the above embodiments, the maximum protrusion height of the outer surface of the outer key portion 62 with respect to the outer surface of the outer jacket 32 is not more than 0.5mm, and the maximum depression depth is not more than 2 mm. The outer surface of the outer key portion 62 is too convex with respect to the outer surface of the outer casing 32, which is likely to cause a user to touch by mistake, and too deep a depression is not preferable for the user to press. The outer surface of the outer key portion and the outer surface of the outer jacket are preferably arranged to be substantially flush. In addition, the proper sinking of the outer key portion will not affect the locking function of the outer shell 32, and the outer shell surface curvature may be set, or the outer key portion may be additionally provided with a connecting component with the outer shell, as long as the key mechanism can form a locking structure to prevent the outer shell from separating from the inner shell along the second installation direction.

The present invention also provides an aerosol generating device for heating an aerosol-generating substrate, comprising a housing assembly as described in the embodiments above, i.e. comprising components such as the key mechanism as described in the embodiments above.

The outer key part and the inner key part are made of materials with good appearance processing performance, such as plastic (ABS, PP, PC, POM, PBT and the like), metal (aluminum alloy, zinc alloy and the like), and the first light guide part and the second light guide part are made of transparent materials, such as: the inner key part and the outer key part are combined with the first light guide part and the second light guide part in a tight fit mode, and the combination mode can be tight fit installation, bonding, secondary injection molding, light-transmitting glue filling and the like.

With respect to the various embodiments of the end plugs, smoke bins, insulation assemblies, and housing assemblies, which may be combined with one another in the present invention, an aerosol generating device is formed.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a can be used for aerosol generation device's passageway shutoff subassembly, aerosol generation device is including having the passageway of plug-in end, its characterized in that, passageway shutoff subassembly includes the end plug, the end plug has front end and rear end, the end plug certainly the front end is followed plug-in end goes into the passageway, the rear end is close to outside the plug-in end, be equipped with first magnetic substance on the end plug, be equipped with the second magnetic substance on the passageway, first magnetic substance for the second magnetic substance polarity is the same the end plug inserts the in-process of passageway, first magnetic substance is kept away from plug-in end is crossed the second magnetic substance.

2. The channel blocking assembly of claim 1 wherein the outer peripheral wall of the end plug is provided with a first threaded portion and the inner wall of the channel is provided with a correspondingly positioned engagement portion for engaging the first threaded portion to allow the end plug to be screwed into and out of the channel.

3. The channel plugging assembly of claim 2, wherein the first threaded portion is axially between the first magnetic body and the rear end.

4. The channel plugging assembly of claim 2 wherein said end plug is inserted into said channel from said plug end from said forward end, said first magnetic body being axially located at a first position closer to said plug end than said second magnetic body at a start of said first threaded portion being threaded into said engagement portion, said first magnetic body being axially displaced to a second position farther from said plug end than said second magnetic body at an end of said first threaded portion being fully threaded into said engagement portion.

5. The channel plugging assembly of claim 4, wherein a pitch of the first threaded portion is greater than or equal to a distance between the first and second positions.

6. The channel plugging assembly of any one of claims 1-5 wherein said first magnetic body is disposed on a peripheral wall of said end plug between said forward end and said rearward end.

7. The channel plugging assembly of claim 6, wherein the first magnetic bodies are a plurality of magnetic bodies having the same polarity toward the outside at the same axial position, and/or the second magnetic bodies have the same polarity and are located at the same axial position on the inner circumferential wall of the channel.

8. The channel plugging assembly of claim 1 wherein an air guide gap is provided between said end plug and said channel for air flow communication.

9. The channel plugging assembly of claim 8 wherein at least a portion of the outer peripheral wall of the end plug forms the air guide gap.

10. The channel plugging assembly of claim 1, wherein the channel is capable of receiving and heating an aerosol generating substrate.

11. An aerosol generating device comprising a channel plugging assembly according to any one of claims 1 to 10.

12. An aerosol generating device according to claim 11, further comprising a housing, the passageway comprising a cartridge capable of receiving and heating an aerosol generating substrate, the cartridge being located within the housing and having an axial direction and a radial direction, the cartridge extending in the axial direction and being open to an exterior of the housing, the cartridge being of the same dimension in the radial direction in the axial direction.

13. The aerosol generating device according to claim 12, wherein the cartridge is formed by a plurality of segments extending in end joints, the plurality of segments including a heat generating chamber and an extension chamber having an inner diameter equal to that of the heat generating chamber, one end of the extension chamber is connected to one end of the heat generating chamber in axial alignment, and the other end of the extension chamber is directly connected to the outside of the housing.

14. The aerosol generating device of claim 13, wherein the extension compartment comprises an extension tube and an insulating tube positioned between the extension tube and the heat-generating compartment in the axial direction, wherein opposite ends of the insulating tube in the axial direction are in end-to-end communication with the heat-generating compartment and the extension tube, respectively.

15. An aerosol generating device according to claim 14, wherein the extension tube extends in the axial direction to a bottom of the housing.

16. An aerosol generating device according to claim 14, further comprising an upper end cap having one end in communication with the upper end of the heat generating chamber and the other end extending and communicating to the top of the housing for feeding aerosol generating substrate therethrough.

17. An aerosol generating device according to claim 16, wherein the insulating tube forms a lower end cap that cooperates with the upper end cap to retain the heat generating chamber.

18. An aerosol generating device according to any one of claims 13 to 17, wherein the end plug is adapted to be plugged into the elongate chamber from the bottom of the housing.