Multi-cartridge electronic cigarette

Abstract

The multi-cartridge electronic cigarette comprises an atomization assembly and a battery assembly, the atomization assembly comprises a suction nozzle, a cartridge support and at least two cartridges, the suction nozzle is fixedly connected with the upper end of the cartridge support, the cartridges are evenly arranged on the cartridge support in the circumferential direction, and the battery assembly comprises a battery outer tube, a battery cell, a battery cell support and a PCB. The battery cell support is sleeved on the inner wall of the lower portion of the battery outer tube, the battery cell and the PCB are arranged on the battery cell support, the smoke cartridge support is rotatably sleeved on the inner wall of the upper portion of the battery outer tube, the upper end wall portion of the battery outer tube is downwards provided with an arc-shaped notch, and the outer wall of the upper end of the smoke cartridge support or the outer wall of the lower end of the suction nozzle is provided with an arc-shaped protruding portion. The arc-shaped protruding parts and the arc-shaped notches are arranged in pairs, and the arc-shaped protruding parts can be exactly meshed with the arc-shaped notches. The electronic cigarette has the advantages that the rotary suction nozzle can drive the two cigarette cartridges to accurately switch the working positions, the situation that the atomization effect is reduced due to air leakage is avoided, meanwhile, switching is easy and convenient, and abrasion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic cigarettes, and more specifically, to a multi-cartridge electronic cigarette. Background Art

[0002] Electronic cigarettes generally include a battery assembly and an atomizer assembly. The battery assembly is equipped with a battery and a control circuit that supply power to the atomizer assembly. The atomizer assembly includes an atomizer, i.e., a cigarette cartridge. The cigarette cartridge includes a liquid storage tank and a heating unit. When powered on, the heating unit can heat the atomized liquid stored in the liquid storage device and atomize it into vapor mist, aerosol or electronic cigarette smoke for users to inhale.

[0003] Some existing electronic cigarettes have dual or multiple cartridges installed to accommodate the conversion of multiple flavors of e-liquids. However, when converting the cartridges in the existing electronic cigarettes with dual or multiple cartridges, it is necessary to rotate the cartridge compartment and the mouthpiece separately, which is complicated to use and can easily cause wear of multiple parts during the conversion. In addition, since multiple parts need to be rotated, it is impossible to accurately position them during the rotation, which can easily cause the air inlet of the working cartridge to be unable to align with the air inlet channel, and it is also impossible to completely seal the air inlet of the remaining non-working cartridges, which can easily cause air leakage during smoking and reduce the atomization efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-cartridge electronic cigarette to overcome the deficiencies of the above-mentioned technology.

[0005] The technical solution of the utility model is implemented as follows: a multi-cartridge electronic cigarette, comprising an atomizer assembly and a battery assembly connected to each other, the atomizer assembly comprising a nozzle, a cartridge holder and at least two cartridges, the at least two cartridges referring to two or more cartridges, the nozzle being fixedly connected to the upper end of the cartridge holder, the cartridges being evenly arranged on the cartridge holder in the circumferential direction, the battery assembly comprising a circular battery outer tube, a battery cell, a battery cell holder and a PCB circuit board, the battery cell holder being sleeved on the lower inner wall of the battery outer tube, the battery cell and the PCB circuit board being arranged on the battery cell holder, the cartridge The bracket can be rotatably mounted on the upper inner wall of the battery outer tube, and the upper end wall of the battery outer tube is provided with arc-shaped notches with the same number as the cigarette cartridges, and the arc-shaped notches are evenly distributed on the upper end wall of the battery outer tube in the circumferential direction. An arc-shaped convex portion is provided on the upper end outer wall of the cigarette cartridge bracket or the lower end outer wall of the suction nozzle, and the arc-shaped convex portion and the arc-shaped notch are arranged in pairs, and the arc-shaped convex portion can just engage with the arc-shaped notch. When the suction nozzle rotates relative to the battery outer tube, the arc-shaped convex portion can smoothly rotate from the originally engaged arc-shaped notch to another adjacent arc-shaped notch and engage with it.

[0006] Preferably, the cigarette cartridge holder comprises a circular plate body at the upper end, a plurality of partition plates in the middle and a plurality of supporting legs at the bottom end, the cigarette cartridge is arranged between the partition plates, the supporting legs support the cigarette cartridge upward, and the upper part of the circular plate body is sleeved on the lower inner wall of the nozzle.

[0007] Preferably, an air outlet hole is provided at the upper end of the cigarette cartridge, and a bracket through hole corresponding to and connected to the air outlet hole is provided on the circular plate body.

[0008] Preferably, two electrode posts connected to the positive and negative electrodes of the battery cell are provided on the PCB circuit board, two electrode contacts are respectively provided at the bottom of the cigarette cartridge, and the two electrode posts are respectively connected with the two electrode contacts of one of the cigarette cartridges.

[0009] Preferably, a fixing bracket is further provided on the upper portion of the battery holder, and the fixing bracket clamps and fixes the PCB circuit board 7 on the upper portion of the battery holder.

[0010] Preferably, an air inlet hole is provided at the bottom of the cigarette cartridge, and a sealing gasket is further provided at the upper end of the battery holder. The sealing gasket is provided with a vent hole connected to the air inlet hole of one of the cigarette cartridges, and the sealing gasket simultaneously blocks the air inlet hole of the other cigarette cartridge.

[0011] Preferably, the sealing gasket is made of silicone material.

[0012] Preferably, a first ferromagnet is provided at the upper end of the battery core holder, and a second ferromagnet is provided at the bottom of the cigarette cartridge holder corresponding to the position of the first ferromagnet, and the second ferromagnet and the first ferromagnet are attracted to each other so that the atomizer assembly and the battery assembly are magnetically connected.

[0013] Preferably, a suction liquid is provided inside the suction nozzle and near the upper end of the cigarette cartridge holder, and the suction liquid is used to absorb condensed liquid mixed in the airway or small droplets that are not completely atomized.

[0014] Preferably, a Type-C interface is also provided on the PCB circuit board for charging or data connection, and the mouth of the Type-C interface is exposed from the side wall of the battery outer tube.

[0015] The beneficial effects of the utility model are as follows: the utility model evenly arranges a plurality of arc-shaped protrusions on the outer wall of the atomizer assembly and a plurality of arc-shaped notches on the battery outer tube, and the two are arranged in pairs, and the arc-shaped protrusions can be engaged with the arc-shaped notches. When the suction nozzle rotates relative to the battery outer tube, the arc-shaped protrusions can smoothly rotate from the originally engaged arc-shaped notches to another adjacent arc-shaped notch and engage with it, so that the rotation of the suction nozzle can drive a plurality of cigarette cartridges to accurately change their working positions, avoiding air leakage and reducing the atomization effect. At the same time, the conversion procedure can be completed by rotating the suction nozzle once, which makes the conversion simple and convenient, and reduces the wear caused by frequent conversion of multiple parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional exploded structural diagram of the electronic cigarette in Example 1;

[0017] Figure 2 is a three-dimensional view of an atomization assembly of an electronic cigarette in Embodiment 1;

[0018] Figure 3 is a three-dimensional exploded structural diagram of an atomization assembly of an electronic cigarette in Example 1;

[0019] Figure 4 is a three-dimensional view of a cartridge holder of an electronic cigarette in Embodiment 1;

[0020] Figure 5 is a three-dimensional view of the cigarette cartridge of the electronic cigarette in Example 1;

[0021] Figure 6 is a three-dimensional exploded structural diagram of a battery assembly of an electronic cigarette in Example 1;

[0022] Figure 7 is a perspective view of a battery assembly of an electronic cigarette in Example 1;

[0023] Figure 8 This is a three-dimensional view of the PCB circuit board of the electronic cigarette in Example 1;

[0024] Fig. 9 is a three-dimensional view of a fixing bracket of an electronic cigarette in Embodiment 1;

[0025] Fig.10 This is a three-dimensional view of the battery support of the electronic cigarette in Example 1;

[0026] Fig.11 is a three-dimensional view of the sealing pad of the electronic cigarette in Example 1;

[0027] Fig.12 It is a schematic diagram of the electronic cigarette in Example 1 performing cigarette cartridge conversion;

[0028] Fig.13 is a three-dimensional exploded structural diagram of the electronic cigarette of Example 2;

[0029] Fig.14 is a three-dimensional view of the atomization assembly of the electronic cigarette of Example 2;

[0030] Fig.15 This is the three-dimensional decomposition structure of the atomization component of the electronic cigarette in Example 2 Figure 1 ;

[0031] Fig.16 This is the three-dimensional decomposition structure of the atomization component of the electronic cigarette in Example 2 Figure 2 ;

[0032] Fig.17 is a three-dimensional view of a battery assembly of the electronic cigarette of Example 2;

[0033] Fig.18 It is a schematic diagram of the electronic cigarette in the second embodiment performing cigarette cartridge conversion. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] To facilitate the following description, Figure 1 As shown, the mouthpiece of the electronic cigarette needs to be placed vertically upward. The descriptions of "upper, lower, upper part, lower part, bottom, upper end, lower end, bottom end, above, below" etc. regarding the components of the electronic cigarette in this document all refer to the positional relationship of the components when the mouthpiece of the electronic cigarette is placed vertically upward.

[0036] Embodiment 1:

[0037] like Figure 1-Figure 12 As shown, the multi-cartridge electronic cigarette of this embodiment includes a round rod-shaped atomizer assembly 100 and a round rod-shaped battery assembly 200 connected to each other, wherein:

[0038] The atomization assembly 100 includes a suction nozzle 1, a cartridge holder 2 and two cartridges 3. The suction nozzle 1 is fixedly connected to the upper end of the cartridge holder 2, and the two cartridges 3 are evenly arranged on the cartridge holder 2 in the circumferential direction. The upper end of the suction nozzle 1 is provided with a suction port (not shown in the figure), and the interior of the suction nozzle 1 is hollow. The interior of the suction nozzle 1 and the position near the upper end of the cartridge holder 2 is provided with an absorbent liquid 11, which can be a cotton material. The absorbent liquid 11 is used to absorb condensed liquid or small droplets that are not completely atomized in the atomization airway to prevent them from being inhaled into the user's mouth.

[0039] The cartridge 3 is also called an atomizer, and is provided with a liquid storage chamber for storing liquid smoke and a heating element (not shown) that can generate heat when powered on, and the heating element can heat the liquid smoke and atomize it into electronic cigarette smoke. The two cartridges 3 have the same size and shape, and are provided with an air outlet (not shown) at their upper ends, which is connected to the air inlet of the mouthpiece 1, and an air inlet 30 and two electrode contacts 31 at their lower ends.

[0040] The battery assembly 200 includes a circular battery outer tube 4 , a battery cell holder 5 , a battery cell 6 and a PCB circuit board 7 . The battery cell holder 5 is sleeved on the lower inner wall of the battery outer tube 4 , and the battery cell 6 and the PCB circuit board 7 are arranged on the battery cell holder 5 .

[0041] The cartridge holder 2 with the cartridge 3 installed can be rotatably mounted on the upper inner wall of the battery outer tube 4. The upper end wall of the battery outer tube 4 is provided with two symmetrical arc-shaped notches 41 downwardly. The lower end outer wall of the suction nozzle 1 is symmetrically provided with arc-shaped protrusions 21. The arc-shaped protrusions 21 and the arc-shaped notches 41 are arranged in pairs. The arc-shaped protrusions 21 can be engaged with the arc-shaped notches 41. When the suction nozzle 1 rotates 180 degrees relative to the battery outer tube 4, the arc-shaped protrusions 21 can smoothly rotate out from the original engaged arc-shaped notch 41 to engage with another symmetrically arranged arc-shaped notch 41. In the present utility model, the number of arc-shaped notches and arc-shaped protrusions is the same as the number of cartridges.

[0042] In other embodiments, the arc-shaped protrusion 21 can also be arranged on the outer wall of the upper end of the cigarette cartridge holder 2, that is, on the outer wall of the circular plate body 23 at the upper end of the cigarette cartridge holder 2 described below, or on the outer wall of the junction of the cigarette cartridge holder 2 and the suction nozzle 1.

[0043] The engagement of the arc-shaped protrusion 21 and the arc-shaped notch 41 enables the atomizer assembly 100 and the battery assembly 200 to be accurately positioned and connected, so that when the suction nozzle 1 rotates, the two cigarette cartridges 3 can be driven to accurately switch working positions, thereby avoiding leakage and reducing the atomization effect caused by the inlet holes of the cigarette cartridge 3 not being accurately aligned during rotation. At the same time, the electronic cigarette of the utility model only needs to rotate the suction nozzle 1 once to complete the conversion procedure of the cigarette cartridge 3, making the conversion simple and convenient, and avoiding the wear caused by the frequent conversion of multiple components of the existing dual-cartridge electronic cigarette, thereby increasing the service life of the electronic cigarette.

[0044] The cartridge holder 2 includes a circular plate body 23 at the upper end, two partition plates 24 axially arranged in the middle, and two legs 25 at the bottom end. The two partition plates 24 are evenly arranged in the circumferential direction, that is, arranged in the same plane. The two cartridges 3 are respectively arranged on both sides of the partition plates 24, and the legs 25 are used to support the cartridges 3 upward. The upper part of the circular plate body 23 is sleeved on the inner wall of the lower end of the suction nozzle 1. The above structure of the cartridge holder 2 can stably clamp and movably install the two cartridges 3 at the same time. When the cartridge holder 2 is pulled out, the two cartridges 3 can be easily disassembled or replaced, and the suction nozzle 1 is fixedly connected to the cartridge holder 2, and the entire atomization assembly 100 can be pulled out or rotated by grabbing the suction nozzle 1. A groove 26 is provided at the bottom of the leg 25, and the groove 26 can be used to install the second ferromagnet 22 described below.

[0045] An air outlet is provided at the upper end of the cigarette cartridge 3, and a bracket through hole 230 corresponding to and connected to the air outlet is provided on the circular plate body 23.

[0046] Two electrode posts 71 connected to the positive and negative electrodes of the battery 6 are provided on the PCB circuit board 7, and two electrode contacts 31 are respectively provided at the bottom of the two cartridges 3. The two electrode posts 71 are respectively connected to the two electrode contacts 31 of one of the cartridges 3. When the electronic cigarette is working, the two electrode posts 71 can only power one cartridge 3, and the other cartridge 3 can only be in standby state.

[0047] A Type-C interface 72 is also provided on the PCB circuit board 7 for charging or data connection, and the mouth of the Type-C interface 72 is exposed from the side wall of the battery outer tube 4.

[0048] A fixing bracket 8 is further provided on the upper portion of the battery cell bracket 5 , and the fixing bracket 8 can clamp and fix the PCB circuit board 7 on the upper portion of the battery cell bracket 5 .

[0049] The upper end of the battery holder 5 is also provided with a sealing gasket 9, which is provided with a vent hole 90 connected to the air inlet hole 30 of one of the cigarette cartridges, and an electrode through hole 91 for two electrode columns 71 to pass through. The sealing gasket 9 is used to seal the bottom end surfaces of the two cigarette cartridges 3, ensuring that the air inlet hole 30 of one of the working cigarette cartridges can normally inlet air, while blocking the air inlet hole 30 of the other spare cigarette cartridge to prevent air from inletting. The sealing gasket 9 can be made of silicone material.

[0050] A first ferromagnet 51 is provided at the upper end of the battery holder 5, and a second ferromagnet 22 is provided at the bottom of the cigarette cartridge holder 2 at a position corresponding to the first ferromagnet 51. The second ferromagnet 22 and the first ferromagnet 51 are attracted and connected to each other, thereby ensuring that the atomizer assembly 100 and the battery assembly 200 are magnetically connected to avoid loosening during operation.

[0051] like Fig.12As shown, in the electronic cigarette of this embodiment, in the left position of the figure, the atomizer assembly 100 and the battery assembly 200 have been connected for use, one of the cigarette cartridges is in use, and the other is in standby state. At this time, the arc-shaped protrusion 21 at the "A" position on the battery outer tube 4 is aligned with the arc-shaped notch 41 at the "1" position on the battery outer tube 4 and meshed together, and the arc-shaped protrusion 21 at the "B" position is symmetrical to the other side of the "A" position. When it is necessary to replace another cigarette cartridge, the nozzle 1 needs to be grasped to rotate the atomizer assembly 100 as a whole, as shown in FIG. Fig.11 In the middle position view, the battery assembly 200 remains stationary, and the atomizer assembly 100 rotates clockwise relative to the battery assembly 200. At this time, the arc-shaped protrusion 21 at the "A" position rotates out from the arc-shaped notch 41 at the "1" position. Fig.11 In the view from the right position, after 180-degree rotation, the arc-shaped protrusion 21 at the "A" position has been aligned with the arc-shaped notch 41 on the other side of the "1" position and meshed together, while the arc-shaped protrusion 21 at the "B" position has been aligned with the arc-shaped notch 41 at the "1" position and meshed together, and the two cigarette cartridges in the atomizer assembly 100 have also been swapped, with the cigarette cartridge in the original standby state being switched to use, and the cigarette cartridge in the original use state being switched to the standby state. In order to facilitate observation of the use state of the cigarette cartridge after conversion, a transparent observation window 42 is also provided on the battery outer tube 4, through which the cigarette cartridge 3 in use can be seen.

[0052] Embodiment 2

[0053] This embodiment adds a cigarette cartridge on the basis of the first embodiment. The electronic cigarette components and structures not described in detail in this embodiment can refer to the first embodiment.

[0054] like Figure 13-Figure 18 As shown, the multi-cartridge electronic cigarette of this embodiment includes a round rod-shaped atomizer assembly 100 and a round rod-shaped battery assembly 200 connected to each other, wherein:

[0055] The atomizer assembly 100 includes a mouthpiece 1, a cartridge holder 2, and three cartridges 3. The mouthpiece 1 is fixedly connected to the upper end of the cartridge holder 2, and the three cartridges 3 are evenly arranged on the cartridge holder 2 in the circumferential direction. The three cartridges 3 have the same size and shape, and are provided with an air outlet (not shown) at their upper ends, which is connected to the air inlet of the mouthpiece 1, and an air inlet 30 and two electrode contacts 31 at their bottom ends. The battery assembly 200 is as in the first embodiment.

[0056] The cartridge holder 2 includes a circular plate body 23 at the upper end, a partition plate 24 axially arranged in the middle and evenly distributed in the circumferential direction, and three legs 25 at the bottom end. The three cartridges 3 are respectively arranged between two adjacent partition plates 24, and the legs 25 are used to support the cartridges 3 upward. The upper part of the circular plate body 23 is sleeved on the inner wall of the lower end of the suction nozzle 1. The above structure of the cartridge holder 2 can stably clamp and movably install the three cartridges 3 at the same time. When the cartridge holder 2 is pulled out, the three cartridges 3 can be easily disassembled or replaced, and the suction nozzle 1 is fixedly connected to the cartridge holder 2, and the entire atomization assembly 100 can be pulled out or rotated by grabbing the suction nozzle 1. In order to facilitate the observation of the use status of the cartridge after conversion, a transparent observation window 42 is also provided on the battery outer tube 4, through which the cartridge 3 in use can be seen.

[0057] The cigarette cartridge holder 2 with the cigarette cartridge 3 installed can be rotatably mounted on the upper inner wall of the battery outer tube 4. The upper end wall of the battery outer tube 4 is provided with arc-shaped notches with the same number as the cigarette cartridges, i.e., three arc-shaped notches 41. Three arc-shaped protrusions 21 are provided on the lower end outer wall of the suction nozzle 1 at positions corresponding to the arc-shaped notches 41. The arc-shaped protrusions 21 are arranged in pairs with the arc-shaped notches 41. The arc-shaped protrusions 21 can just engage with the arc-shaped notches 41. When the suction nozzle 1 rotates relative to the battery outer tube 4, any one of the arc-shaped protrusions 21 can smoothly rotate from the originally engaged arc-shaped notch 41 to another adjacently arranged arc-shaped notch 41 and engage with it.

[0058] The engagement of the arc-shaped protrusion 21 and the arc-shaped notch 41 enables the atomizer assembly 100 and the battery assembly 200 to be accurately positioned and connected, so that when the mouthpiece 1 rotates, the three cigarette cartridges 3 can be driven to accurately switch working positions, thereby avoiding leakage and reducing the atomization effect caused by the inlet holes of the cigarette cartridges 3 not being accurately aligned during rotation. At the same time, the electronic cigarette of the utility model only needs to rotate the mouthpiece 1 once to complete the conversion procedure of the cigarette cartridge 3, making the conversion simple and convenient, and avoiding the wear caused by the frequent conversion of multiple components of the existing dual-cartridge electronic cigarette, thereby increasing the service life of the electronic cigarette.

[0059] like Fig.18 As shown, in the electronic cigarette of this embodiment, in the figure at the far left position, the atomizer assembly 100 and the battery assembly 200 have been connected for use, one of the cigarette cartridges is in use, and the other two cigarette cartridges are in standby state. At this time, the arc-shaped protrusion 21 at the "A" position on the atomizer assembly 100 is aligned with the arc-shaped notch 41 at the "1" position on the battery assembly 200 and meshed together, and the arc-shaped protrusions 21 at the "B" position and the "C" position evenly arranged in the circumferential direction are aligned with the other two arc-shaped notches 41 and meshed together.

[0060] When it is necessary to replace another adjacent cartridge, the nozzle 1 needs to be grasped to rotate the atomizer assembly 100 as a whole, until the arc-shaped protrusion 21 at the "B" position is aligned with the arc-shaped notch 41 at the "1" position and meshes together, then the three cartridges in the atomizer assembly 100 have been swapped, where the adjacent cartridges in the standby state are put into use, and the cartridges in the use state are put into the standby state. Similarly, when the nozzle 1 is grasped to continue to rotate the atomizer assembly 100 as a whole, until the arc-shaped protrusion 21 at the "C" position is aligned with the arc-shaped notch 41 at the "1" position and meshes together, then the three cartridges in the atomizer assembly 100 are swapped again. When the liquid stored in each cartridge has different flavors, the flavor of the electronic cigarette can be changed by switching cartridges.

[0061] Similarly, in other embodiments, the utility model evenly arranges a plurality of arc-shaped protrusions on the outer wall of the atomizer assembly and a plurality of arc-shaped notches on the battery outer tube, and the two are arranged in pairs, and the arc-shaped protrusions can be engaged in the arc-shaped notches. When the suction nozzle rotates relative to the battery outer tube, the arc-shaped protrusions can smoothly rotate from the original engaged arc-shaped notches to another adjacent arc-shaped notch and engage with it, so that the rotation of the suction nozzle can drive a plurality of cigarette cartridges to accurately switch working positions, avoiding air leakage and reducing the atomization effect. At the same time, the conversion procedure can be completed by rotating the suction nozzle once, making the conversion simple and convenient, and reducing the wear caused by frequent conversion of multiple parts. In the utility model, the number of arc-shaped notches and arc-shaped protrusions is the same as the number of cigarette cartridges.

[0062] The above description is only a preferred embodiment of the utility model, and the above specific embodiment is not a limitation of the utility model. Various deformations and modifications may occur within the technical concept of the utility model, and any modification, modification or equivalent replacement made by ordinary technicians in this field based on the above description belongs to the scope of protection of the utility model.

Claims

1. A multi-cartridge electronic cigarette, characterized in that: The invention comprises an atomizer assembly and a battery assembly connected to each other, wherein the atomizer assembly comprises a nozzle, a cigarette cartridge holder and at least two cigarette cartridges, wherein the nozzle is fixedly connected to the upper end of the cigarette cartridge holder, and the cigarette cartridges are evenly arranged on the cigarette cartridge holder in the circumferential direction, and the battery assembly comprises a circular battery outer tube, a battery cell, a battery cell holder and a PCB circuit board, wherein the battery cell holder is sleeved on the lower inner wall of the battery outer tube, the battery cell and the PCB circuit board are arranged on the battery cell holder, and the cigarette cartridge holder is rotatably sleeved on the upper inner wall of the battery outer tube, The upper end wall of the battery outer tube is downwardly provided with arc-shaped notches having the same number as the cigarette cartridges, and the arc-shaped notches are evenly distributed on the upper end wall of the battery outer tube in the circumferential direction. An arc-shaped convex portion is provided on the upper end outer wall of the cigarette cartridge holder or the lower end outer wall of the suction nozzle, and the arc-shaped convex portion and the arc-shaped notch are arranged in pairs, and the arc-shaped convex portion can just engage with the arc-shaped notch. When the suction nozzle rotates relative to the battery outer tube, the arc-shaped convex portion can smoothly rotate from the originally engaged arc-shaped notch to another adjacent arc-shaped notch and engage with it.

2. The multi-cartridge electronic cigarette according to claim 1, characterized in that: The cigarette cartridge holder comprises a circular plate body at the upper end, a plurality of partition plates in the middle and a plurality of supporting legs at the bottom end, the cigarette cartridge is arranged between the partition plates, the supporting legs support the cigarette cartridge upward, and the upper part of the circular plate body is sleeved on the inner wall of the lower end of the suction nozzle.

3. The multi-cartridge electronic cigarette according to claim 2, characterized in that: An air outlet hole is arranged at the upper end of the cigarette cartridge, and a bracket through hole corresponding to and connected to the air outlet hole is arranged on the circular plate body.

4. The multi-cartridge electronic cigarette according to claim 1, characterized in that: The PCB circuit board is provided with two electrode posts connected to the positive electrode and the negative electrode of the battery cell, and the bottom of the cigarette cartridge is provided with two electrode contacts respectively, and the two electrode posts are respectively connected with the two electrode contacts of one of the cigarette cartridges.

5. The multi-cartridge electronic cigarette according to claim 1, characterized in that: A fixing bracket is also provided on the upper part of the battery holder, and the fixing bracket clamps and fixes the PCB circuit board on the upper part of the battery holder.

6. The multi-cartridge electronic cigarette according to claim 1, characterized in that: An air inlet hole is provided at the bottom of the cigarette cartridge, and a sealing gasket is also provided at the upper end of the battery holder. The sealing gasket is provided with an air vent connected to the air inlet hole of one of the cigarette cartridges, and the sealing gasket blocks the air inlet hole of the other cigarette cartridge at the same time.

7. The multi-cartridge electronic cigarette according to claim 6, characterized in that: The sealing pad is made of silicone material.

8. The multi-cartridge electronic cigarette according to claim 1, characterized in that: A first ferromagnet is provided at the upper end of the battery holder, and a second ferromagnet is provided at the bottom of the cigarette cartridge holder corresponding to the position of the first ferromagnet. The second ferromagnet and the first ferromagnet attract each other so that the atomizer assembly and the battery assembly are magnetically connected.

9. The multi-cartridge electronic cigarette according to claim 1, characterized in that: A suction liquid is provided inside the suction nozzle and near the upper end of the cigarette cartridge holder. The suction liquid is used to absorb condensed liquid mixed in the airway or small droplets that are not completely atomized.

10. The multi-cartridge electronic cigarette according to claim 1, characterized in that: The PCB circuit board is also provided with a Type-C interface for charging or data connection, and the mouth of the Type-C interface is exposed from the side wall of the battery outer tube.

Images