An aerosol generating device

Abstract

The present invention relates to an aerosol generating device, the aerosol generating device is provided with a heating body, comprising: an inner shell, the inner shell is used to place an aerosol forming substrate, the heating body is used to insert the aerosol forming substrate; a bracket, the inner shell can be rotatably connected to the bracket between a first position and a second position, during the process from the first position to the second position, the aerosol forming substrate and the heating body can produce relative movement in the circumferential direction, in the first position and the second position, the aerosol forming substrate is in contact with the heating body; a transition piece, arranged between the inner shell and the bracket, the inner shell is rotatably connected to the bracket through the transition piece. The rotation feel of the inner shell in the aerosol generating device of the present invention is good, and the rotation effect of the inner shell is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol generation, and in particular to an aerosol generating device. Background Art

[0002] In recent years, the impact of traditional cigarettes on health and the environment has gradually attracted the attention of countries around the world. Tobacco manufacturers are committed to providing consumers with less harmful tobacco products. As a new form of tobacco consumption, low-temperature heat-not-burn tobacco products are gradually gaining popularity in the market and are increasingly being accepted by cigarette consumers in most countries.

[0003] For example, a Chinese patent document with publication number CN106376975A provides an aerosol generating device and a method of using the same, wherein the aerosol generating device comprises: a cavity, having a cavity shell and a cavity accommodating space formed by the cavity shell, wherein the cavity accommodating space is used to accommodate a medium to be heated, and a filter cotton is provided on the top of the cavity; a sealing cover, disposed at the bottom of the cavity to seal the bottom of the cavity, and a penetration portion is formed at the bottom of the sealing cover; an air deflector, disposed below the sealing cover, having a guide groove and a guide hole, and the guide hole and the penetration portion are disposed correspondingly; a heater, comprising a heater bottom cover and a heating ceramic sheet, wherein the heater bottom cover is disposed below the air deflector, and the heating ceramic sheet is fixed to the heater bottom cover and passes through the guide hole and pierces the penetration portion to penetrate into the cavity accommodating space.

[0004] The Chinese patent document with publication number CN103974640A provides an aerosol generating device, which is configured to receive an aerosol-forming substrate and is configured to heat the aerosol-forming substrate using both an internal heater and an external heater, the internal heater being positioned within the substrate and the external heater being positioned outside the substrate. The use of both internal and external heaters allows each heater to operate at a lower temperature than may be required when using an internal or external heater alone. By operating the external heater at a lower temperature than the internal heater, the substrate can be heated to have a relatively uniform temperature distribution, while the external temperature of the device can be maintained at an acceptable low level.

[0005] Existing aerosol generating devices generally heat the aerosol-forming substrate through a heater to generate aerosol for users to inhale. After the user finishes inhaling, when pulling out the aerosol-forming substrate, the aerosol-forming substrate will stick to the heater, making it difficult to pull out the aerosol-forming substrate from the aerosol generating device, which is inconvenient to use and affects the consumer user experience. Summary of the invention

[0006] The object of the present invention is to provide an aerosol generating device, which is provided with a heating body, including: an inner shell, the inner shell is used to place an aerosol-forming substrate, and the heating body is used to insert the aerosol-forming substrate; a bracket, the inner shell can be rotatably connected to the bracket between a first position and a second position, and in the process from the first position to the second position, the aerosol-forming substrate and the heating body can produce relative movement in the circumferential direction, and in the first position and the second position, the aerosol-forming substrate is in contact with the heating body; a transition piece is provided between the inner shell and the bracket, and the inner shell is rotatably connected to the bracket through the transition piece.

[0007] Optionally, the transition piece is arranged around the inner shell along the circumferential direction.

[0008] Optionally, the transition piece is a rolling piece.

[0009] Optionally, the rolling element is a bearing.

[0010] Optionally, the inner ring of the bearing is connected to the inner shell, the outer ring of the bearing is connected to the bracket, and balls are provided between the inner ring and the outer ring.

[0011] Optionally, the transition piece is a damping piece.

[0012] Optionally, the transition piece is an elastic piece, which includes: a plurality of first protrusions distributed on the inner shell at intervals along the circumference; a plurality of first grooves distributed on the bracket at intervals along the circumference, and the first grooves cooperate with the first protrusions; or, a plurality of first protrusions distributed on the bracket at intervals along the circumference; a plurality of first grooves distributed on the inner shell at intervals along the circumference, and the first grooves cooperate with the first protrusions.

[0013] Optionally, along the radial direction, the height of the portion of the first protrusion located in the first groove accounts for 2 / 3 to 1 of the height of the first protrusion.

[0014] Optionally, the inner wall of the inner shell is provided with a second protrusion for providing a radial compression force after the aerosol-forming substrate is placed in the inner shell.

[0015] Optionally, there are a plurality of second protrusions, which are distributed on the inner wall of the inner shell at intervals along the circumferential direction, and the outer diameter of an inscribed circle formed by the plurality of second protrusions is smaller than the outer diameter of the aerosol-forming substrate.

[0016] Optionally, the second protrusion extends in the axial direction.

[0017] Optionally, it further comprises an outer shell, which is sleeved on the inner shell, and in the process of moving from the first position to the second position, the inner shell can rotate synchronously with the outer shell along the circumferential direction.

[0018] Optionally, one of the inner circumferential surface of the outer shell and the outer circumferential surface of the inner shell is provided with a second groove extending in the axial direction, and the other is provided with a third protrusion, and the third protrusion is arranged in the second groove.

[0019] Optionally, in the first position, the aerosol-forming substrate has a first axial position relative to the heating body; in the second position, the aerosol-forming substrate has a second axial position relative to the heating body, and the first axial position and the second axial position are the same.

[0020] As described above, an aerosol generating device comprises: an inner shell, a bracket and a heating body, wherein the heating body is used to insert an aerosol forming substrate placed in the inner shell. A transition piece is provided between the inner shell and the bracket, and the inner shell can be rotatably connected to the bracket between a first position and a second position through the transition piece. During the process from the first position to the second position, the aerosol forming substrate and the heating body can generate relative movement in the circumferential direction. In both the first position and the second position, the aerosol forming substrate is in contact with the heating body.

[0021] When the user inhales, the aerosol-forming substrate is placed in the inner shell, and the heating body is inserted into the aerosol-forming substrate. At this time, the aerosol-forming substrate is in contact with the heating body, and the heating body is controlled to heat the aerosol-forming substrate to generate aerosol for the user to inhale. When the user completes the inhalation, before pulling out the aerosol-forming substrate, the inner shell is controlled to rotate relative to the bracket in the circumferential direction from the first position to the second position. Since the inner shell rotates relative to the bracket in the circumferential direction through the transition piece, the connection between the inner shell and the bracket is optimized, the rotation feel of the inner shell is good, and the rotation effect of the inner shell is optimized.

[0022] This helps the aerosol forming substrate and the heating body to become loose from adhesion. After the aerosol forming substrate rotates synchronously with the inner shell in the circumferential direction for a sufficient distance, that is, after the aerosol forming substrate moves circumferentially relative to the heating body for a sufficient distance, when the aerosol forming substrate is pulled out from the heating body in the axial direction, the amount of aerosol forming substrate remaining on the heating body will be less, which is more conducive to the user's cleaning of the aerosol generating device.

[0023] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of an aerosol generating device according to an embodiment of the present invention Figure 1 ;

[0025] Figure 2 is a cross-sectional view of an aerosol generating device according to an embodiment of the present invention Figure 2 ;

[0026] Figure 3 yes Figure 1 A magnified view of part A;

[0027] Figure 4 yes Figure 2 A magnified view of part B;

[0028] Figure 5 is a cross-sectional view of an aerosol generating device according to an embodiment of the present invention Figure 3 ;

[0029] Figure 6 yes Figure 5 Magnified view of part C. DETAILED DESCRIPTION

[0030] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] refer to Figures 1 to 3 The present invention provides an aerosol generating device 1, comprising: an inner shell 10, a bracket 20 and a heating body 11, wherein the bracket 20 is arranged on the body 30 of the aerosol generating device 1, and the heating body 11 is used to be inserted into an aerosol forming substrate (not shown) placed in the inner shell 10. Figure 3 and Figure 4 A transition piece 40 is provided between the inner shell 10 and the bracket 20. The inner shell 10 can be rotatably connected to the bracket 20 between a first position and a second position through the transition piece 40. During the process from the first position to the second position, the aerosol-forming substrate and the heating body 11 can be circumferentially ( Figure 1 and Figure 2 In the first position and the second position, the aerosol-forming substrate is in contact with the heating body 11.

[0032] When the user inhales, the aerosol-forming substrate is placed in the inner shell 10, and the heating body 11 is inserted into the aerosol-forming substrate. At this time, the aerosol-forming substrate is in contact with the heating body 11, and the heating body 11 is controlled to heat the aerosol-forming substrate to generate aerosol for the user to inhale. When the user completes the inhalation, before pulling out the aerosol-forming substrate, the inner shell 10 is controlled to rotate relative to the bracket 20 in the circumferential direction from the first position to the second position. Since the inner shell 10 rotates relative to the bracket 20 in the circumferential direction through the transition piece 40, the connection between the inner shell 10 and the bracket 20 is optimized, the rotation feel of the inner shell 10 is good, and the rotation effect of the inner shell 10 is optimized.

[0033] This helps the aerosol forming substrate and the heating body 11 to become loose from adhesion. After the aerosol forming substrate rotates synchronously with the inner shell 10 in the circumferential direction for a sufficient distance, that is, after the aerosol forming substrate moves in the circumferential direction for a sufficient distance relative to the heating body 11, when the aerosol forming substrate is pulled out from the heating body 11 in the axial direction, the amount of aerosol forming substrate remaining on the heating body 11 will be less, which is more conducive to the user's cleaning of the aerosol generating device 1.

[0034] In the embodiment of the present invention, the inner shell 10 is arranged from the first position along the circumferential direction ( Figure 1 and Figure 2 The inner shell 10 is rotated relative to the aerosol generating device 1 to switch to the second position (as shown in the Z direction), and the inner shell 10 can rotate clockwise or counterclockwise along the circumferential direction, or rotate clockwise and counterclockwise alternately. In the process of the inner shell 10 moving from the first position to the second position, the aerosol forming substrate is in contact with and remains connected to the heating body 11, and the aerosol forming substrate and the heating body 11 can generate relative movement in the circumferential direction.

[0035] In the first position, the aerosol-forming substrate has a first axial position relative to the heating body 11, and in the second position, the aerosol-forming substrate has a second axial position relative to the heating body 11, and the first axial position and the second axial position are the same. That is, in the first position and the second position, the aerosol-forming substrate is in contact with the heating body 11, and there is no relative movement in the axial direction. Preferably, in the process from the first position to the second position, the aerosol-forming substrate and the heating body 11 have no relative axial movement.

[0036] In other embodiments, the first axial position and the second axial position are different. During the rotation of the inner shell 10 relative to the aerosol generating device 1, the aerosol-forming substrate is in contact with the heating body 11, and the two not only move circumferentially but also move axially. As long as the aerosol-forming substrate and the heating body 11 can move relative to each other in the circumferential direction and the aerosol-forming substrate is in contact with the heating body 11 during the rotation from the first position to the second position, it is sufficient.

[0037] In addition, in this embodiment, when the inner shell 10 switches from the first position to the second position, the inner shell 10 rotates in the circumferential direction and the heating body 11 remains stationary; in other embodiments, the heating body 11 rotates in the circumferential direction and the inner shell 10 remains stationary, as long as the aerosol-forming substrate and the heating body 11 produce relative motion in the circumferential direction in the second position. Among them, when the heating body 11 rotates in the circumferential direction, the heating body 11 can rotate synchronously with the aerosol-generating device 1 in which it is located, or the heating body 11 can rotate and the aerosol-generating device 1 in which the heating body 11 is located remains stationary.

[0038] In addition, the specific type of the aerosol-forming substrate of the present invention is not limited, as long as it can generate aerosol for the user to inhale after being heated by the heating body 11. During the process of heating the aerosol-forming substrate by the heating body 11, the aerosol-forming substrate can be heated but not burned. For example, in this embodiment, the aerosol-forming substrate is a solid aerosol-forming substrate containing tobacco components, and the aerosol-forming substrate is wrapped by an outer packaging (such as an aluminum foil layer).

[0039] In addition, the specific shape of the heating body 11 is not limited. In this embodiment, the heating body 11 is cylindrical and has a circular cross section. In other embodiments, the cross section of the heating body 11 may be a quadrilateral, a triangle, or a polygon. As the number of sides of the cross section of the heating body 11 increases, the heating body 11 and the aerosol-forming substrate are more likely to loosen during the relative movement of the heating body 11 and the aerosol-forming substrate in the circumferential direction. When the aerosol-forming substrate is pulled out from the heating body 11, the amount of aerosol-forming substrate remaining on the heating body 11 will be less, which is more conducive to the user's cleaning of the aerosol-generating device 1.

[0040] The specific material of the heating body 11 is not limited, as long as it can generate heat after being powered on to heat the aerosol-forming substrate to generate aerosol. For example, in this embodiment, the material of the heating body 11 includes ceramic.

[0041] In this embodiment, the transition piece 40 is disposed circumferentially around the inner shell 10. For example, the transition piece 40 is disposed circumferentially around the inner shell 10 at 360°.

[0042] refer to Figure 1 and Figure 3In this embodiment, the transition piece 40 is a rolling piece. The type of rolling piece is not limited. In this embodiment, the rolling piece is a bearing. The inner ring 41 of the bearing is connected to the inner shell 10, the outer ring 42 of the bearing is connected to the bracket 20, and a ball 43 is provided between the inner ring 41 and the outer ring 42. In other embodiments, other types of rolling pieces may be used, such as balls, and the bearings are replaced by balls, and the bracket 20 and the inner shell 10 are connected by the balls. In this embodiment, the number of bearings is not limited. By providing the bearing, on the one hand, the connection between the inner shell 10 and the bracket 20 is optimized, and the rotation effect is optimized; on the other hand, the connection stability between the inner shell 10 and the bracket 20 can be improved, the axial offset of the inner shell 10 can be reduced, and the inner shell 10 can be prevented from shaking in the radial direction; in addition, the installation accuracy can also be reduced; in addition, since it is a bearing, rolling contact can reduce the wear between the inner shell 10 and the bracket 20.

[0043] In this embodiment, the portion of the inner shell 10 facing the body has an axial extension portion 11, the bracket 20 has a radial boss 21, the transition piece 40 is placed on the radial boss 21, and in the radial direction, the axial extension portion 11 of the inner shell 10 and the bracket 20 clamp the transition piece 40. Preferably, and in the radial direction, the axial extension portion 11 of the inner shell 10, the outer shell 50 described later, and the bracket 20 clamp the transition piece 40.

[0044] In other embodiments, reference Figure 2 and Figure 4 , the transition piece 40 is a damping piece. The existence of the damping piece makes a damping feel when the inner shell 10 rotates from the first position to the second position along the circumferential direction. Then, when the inner shell 10 can rotate to any position along the circumferential direction, the inner shell 10 can remain at this position when the circumferential force is applied. When it is necessary to continue rotating, the circumferential force is applied again. The damping piece is provided. Similarly, on the one hand, the connection between the inner shell 10 and the bracket 20 is optimized, and the rotation effect is optimized; on the other hand, the connection stability between the inner shell 10 and the bracket 20 can be improved, the axial offset of the inner shell 10 can be reduced, and the radial shaking of the inner shell 10 can be prevented.

[0045] The type of damping member of the present invention is not limited, and the damping materials are divided into 6 categories according to their characteristics: ① Rubber and plastic damping plates: used as sandwich layer materials. Butyl, acrylate, polysulfide, nitrile and silicone rubber, polyurethane, polyvinyl chloride and epoxy resin are more commonly used. This type of material can meet the use requirements within the range of -50°C to 200°C. ② Rubber and foam plastics: used as damping sound-absorbing materials. Butyl rubber and polyurethane foam are more commonly used to control the size of the pores, through holes or closed holes to achieve the purpose of sound absorption. ③ Damping composite materials: used for vibration and noise control. It uses the first two types of materials as damping sandwich layers, and then combines them with metal or non-metallic structural materials to form various sandwich structure plates and beams and other profiles, which are machined into various structural parts. ④ High damping alloy: The damping performance is basically stable over a wide range of temperature and frequency. Copper-zinc-aluminum, iron-chromium-molybdenum and manganese-copper alloys are more commonly used. ⑤ Damping coating: Damping coating is made of polymer resin with appropriate amount of filler and auxiliary materials. It is a special coating that can be applied on the surface of various metal plate structures and has vibration reduction, heat insulation and certain sealing properties. Including constrained damping coating and water-based damping coating. ⑥ Polymer vibration absorbing material: A polymer material that can convert mechanical vibration energy or sound energy into heat energy and dissipate it, and can prevent or reduce the destructive effect of mechanical vibration on components. Since polymer materials have a transition zone from glass state to high elastic state, it is characterized by a decrease of about three orders of magnitude in the shear modulus of the polymer, while the internal friction increases and a peak value appears. Therefore, the damping characteristics of the polymer have a maximum value only in the glass transition zone. This means that this zone is the best temperature zone for polymers to be used as damping materials. However, the glass transition temperature of polymers is also related to the frequency of external force. Therefore, according to the requirements of vibration frequency and use temperature, select suitable polymers as vibration absorbing and damping materials.

[0046] In other embodiments, reference Figure 5 and Figure 6 The transition piece 40 is an elastic piece, and the elastic piece includes: a plurality of first protrusions 44, and the plurality of first protrusions 44 are arranged along the circumferential direction ( Figure 6 In another embodiment, the first protrusions 44 are arranged on the bracket 20 at intervals along the circumferential direction, and the first protrusions 45 are arranged on the inner shell 10 at intervals along the circumferential direction; and a plurality of first grooves 45 are arranged on the bracket 20 at intervals along the circumferential direction, and the first grooves 45 are matched with the first protrusions 44. In other embodiments, the first protrusions 44 are arranged on the bracket 20 at intervals along the circumferential direction, and the first grooves 45 are arranged on the inner shell 10 at intervals along the circumferential direction, and the first grooves 45 are matched with the first protrusions 44.

[0047] Preferably, the first protrusion 44 and the first groove 45 extend in the axial direction respectively. Then, during the circumferential rotation of the inner shell 10, when the first protrusion 44 contacts the first groove 45, for example, the overlapping height is 0.1mm to 0.3mm, including 0.1mm to 0.3mm, the first groove 45 will have a certain limit and generate resistance; because it is an elastic material, the inner shell 10 continues to rotate, and the circumferential force applied to the inner shell 10 will overcome the above resistance, and the inner shell 10 continues to rotate. When the first protrusion 44 and the first groove 45 contact again, the first groove 45 will generate resistance again, so that the inner shell 10 will have periodic resistance during the circumferential rotation process.

[0048] This arrangement, on the one hand, optimizes the connection between the inner shell 10 and the bracket 20 and optimizes the rotation effect; on the other hand, it can improve the connection stability between the inner shell 10 and the bracket 20, reduce the axial offset of the inner shell 10, and prevent the inner shell 10 from shaking in the radial direction.

[0049] Specifically, refer to Figure 6 , along the radial direction ( Figure 6 The height of the portion of the first protrusion 44 located in the first groove 45 ( Figure 6 H2) accounts for the height of the first protrusion 44 ( Figure 6 2 / 3 to 1, including 2 / 3 and 1) as shown in H1. The height of the first protrusion 44 is: the tangent line ( Figure 6 E) to the tangent line ( Figure 6 The height of the first protrusion 44 located in the first groove 45 is: the tangent line of the highest point of the protrusion forming the first groove 45 ( Figure 6 The distance from the tangent line of the highest point of the first protrusion 44 to the first protrusion 44 (as shown in F).

[0050] Continue to refer Figure 1 and Figure 2 In this embodiment, during the process from the first position to the second position, the aerosol-forming substrate is subjected to a radial compression force. Among them, the inner wall of the inner shell 10 is provided with a second protrusion 12, which is used to provide a radial compression force after the aerosol-forming substrate is placed in the inner shell 10. Among them, there are multiple second protrusions 12, which are distributed on the inner wall of the inner shell 10 at intervals along the circumferential direction, and the outer diameter of the inscribed circle surrounded by the multiple second protrusions 12 is smaller than the outer diameter of the aerosol-forming substrate. Thus, when the aerosol-forming substrate is placed in the area surrounded by the multiple second protrusions 12, it is subjected to a radial compression force. In this embodiment, the second protrusion 12 extends in the axial direction, so that the second protrusion 12 can better clamp the aerosol-forming substrate.

[0051] In other embodiments, other forms may be adopted so that the aerosol-forming substrate is subjected to radial compression force when the inner shell 10 moves from the first position to the second position.

[0052] In addition, refer to Figure 1 and Figure 2 In this embodiment, the aerosol generating device 1 further comprises an outer shell 50, and the outer shell 50 is sleeved on the inner shell 10. When the inner shell 10 rotates from the first position to the second position in the circumferential direction, the inner shell 10 can rotate synchronously with the outer shell 50 in the circumferential direction. In other embodiments, the outer shell 50 may not rotate synchronously with the inner shell 10, as long as the aerosol forming substrate and the heating body 11 can produce relative motion in the circumferential direction. It can also be that during the circumferential rotation of the outer shell 50, at least the inner shell 10 rotates synchronously with the outer shell 50. In this embodiment, during the process from the first position to the second position, the aerosol forming substrate is subjected to radial compression force.

[0053] refer to Figure 1 and Figure 2 The inner circumference of the outer shell 50 is provided with a third protrusion 51, and the number of the third protrusion 51 is not limited. In this embodiment, three third protrusions 51 are provided on the inner circumference of the outer shell 50 at intervals along the circumferential direction; the outer circumference of the inner shell 10 is provided with a plurality of third protrusions 51 along the axial direction ( Figure 1 and Figure 2 The inner shell 10 is provided with a second groove extending in the axial direction (shown in the X direction), and the number of the second grooves is not limited. In this embodiment, three second grooves are provided on the outer circumferential surface of the inner shell 10 at intervals along the circumferential direction. The third protrusion 51 is provided on the first groove 45, so that when the inner shell 10 rotates synchronously from the first position to the second position along the circumferential direction, the inner shell 10 can rotate synchronously along the circumferential direction with the outer shell 50. In other embodiments, the inner circumferential surface of the outer shell 50 may be provided with a second groove extending in the axial direction, and the outer circumferential surface of the inner shell 10 may be provided with a third protrusion 51, and the third protrusion 51 is provided on the first groove 45.

[0054] In this embodiment, the third protrusion 51 extends in the axial direction. However, the extension direction of the third protrusion 51 is not limited, as long as the third protrusion 51 is arranged in the first groove 45, the inner shell 10 can rotate synchronously with the outer shell 50 in the circumferential direction. In addition, the matching form between the inner shell 10 and the outer shell 50 is not limited to the matching form of the third protrusion 51 and the first groove 45, and can also be other matching forms, as long as the inner shell 10 can rotate synchronously with the outer shell 50 in the circumferential direction.

[0055] In summary, the above embodiments provided by the present invention are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An aerosol generating device, the aerosol generating device having a heating body, characterized in that: include: An inner shell, the inner shell is used to place an aerosol-forming substrate, and the heating body is used to be inserted into the aerosol-forming substrate; a bracket, the bracket being arranged on the body of the aerosol generating device, the inner shell being rotatably connected to the bracket between a first position and a second position, the aerosol-forming substrate and the heating body being able to generate relative movement in a circumferential direction during the process of moving from the first position to the second position, and the aerosol-forming substrate being in contact with the heating body in both the first position and the second position; An outer shell, wherein the outer shell is sleeved on the inner shell, and during the process from the first position to the second position, the inner shell can rotate synchronously with the outer shell along the circumferential direction; A transition piece is provided between the inner shell and the bracket, and the inner shell is rotatably connected to the bracket through the transition piece; The transition piece is a rolling piece, a damping piece or an elastic piece, and the elastic piece includes: A plurality of first protrusions are distributed on the inner shell at intervals along the circumferential direction; A plurality of first grooves are distributed on the bracket at intervals along the circumferential direction, and the first grooves match the first protrusions; or, A plurality of first protrusions are distributed on the bracket at intervals along the circumferential direction; A plurality of first grooves are distributed on the inner shell at intervals along the circumferential direction, and the first grooves match the first protrusions.

2. The aerosol generating device according to claim 1, characterized in that The transition piece is disposed around the inner shell along the circumferential direction.

3. The aerosol generating device according to claim 1, characterized in that The rolling element is a bearing.

4. The aerosol generating device according to claim 3, characterized in that The inner ring of the bearing is connected to the inner shell, the outer ring of the bearing is connected to the bracket, and balls are arranged between the inner ring and the outer ring.

5. The aerosol generating device according to claim 1, characterized in that In the radial direction, the height of the portion of the first protrusion located in the first groove accounts for 2 / 3 to 1 of the height of the first protrusion.

6. The aerosol generating device according to claim 1, characterized in that The inner wall of the inner shell is provided with a second protrusion for providing a radial pressing force after the aerosol-forming substrate is placed in the inner shell.

7. The aerosol generating device according to claim 6, characterized in that There are a plurality of second protrusions, which are distributed on the inner wall of the inner shell at intervals along the circumferential direction, and the outer diameter of the inscribed circle formed by the plurality of second protrusions is smaller than the outer diameter of the aerosol-forming substrate.

8. The aerosol generating device according to claim 6, characterized in that The second protrusion extends in the axial direction.

9. The aerosol generating device according to claim 1, characterized in that One of the inner circumferential surface of the outer shell and the outer circumferential surface of the inner shell is provided with a second groove extending in the axial direction, and the other is provided with a third protrusion, and the third protrusion is arranged in the second groove.

10. The aerosol generating device according to claim 1, characterized in that In the first position, the aerosol-forming substrate has a first axial position relative to the heating body; in the second position, the aerosol-forming substrate has a second axial position relative to the heating body, the first axial position and the second axial position being the same.

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