CN216147231U

CN216147231U - Host and electronic atomization device

Info

Publication number: CN216147231U
Application number: CN202121072340.7U
Authority: CN
Inventors: 谢驹
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-04-01
Anticipated expiration: 2031-05-19
Also published as: US20220369701A1

Abstract

The utility model relates to a host and an electronic atomization device, wherein the host is used for being matched with an atomizer for use and comprises a shell assembly, a protective cover, a first driving piece and a second driving piece, the first driving piece is rotationally connected with the shell assembly and drives the second driving piece to slide relative to the shell assembly, an open opening is formed in the shell assembly, and the second driving piece is meshed with the first driving piece and is used for bearing the atomizer; in the process that the first driving piece drives the protective cover to open or close the open opening, the second driving piece drives the atomizer to extend out of the shell assembly or retract into the shell assembly through the open opening. Therefore, the atomizer is prevented from being polluted by pollutants such as external dust and liquid, and the electronic atomization device is safe to use.

Description

Host and electronic atomization device

Technical Field

The utility model relates to the technical field of display electronic atomization, in particular to a host and an electronic atomization device comprising the host.

Background

The electronic atomization device comprises a power supply assembly and an atomizer, wherein the power supply assembly supplies power to the atomizer, and the atomizer converts electric energy into heat, so that atomization media in the atomizer absorb the heat to atomize and form smoke which can be sucked by a user. With a conventional electronic atomizer, a suction nozzle of the atomizer is usually exposed, and during the process of stopping the use of the electronic atomizer, contaminants such as external dust or liquid drops will adhere to the suction nozzle to contaminate the suction nozzle, so that the contaminants on the suction nozzle will be absorbed by a user during subsequent suction. Since the pollutants will affect the health of the user, the conventional electronic atomization device will inevitably have the defect of low safety.

SUMMERY OF THE UTILITY MODEL

The utility model solves a technical problem of improving the use safety of the atomizer.

A host is used for being matched with an atomizer for use and comprises a shell assembly, a protective cover, a first driving piece and a second driving piece, wherein the first driving piece is rotatably connected with the shell assembly and drives the second driving piece to slide relative to the shell assembly; in the process that the first driving piece drives the protective cover to open or close the open opening, the second driving piece drives the atomizer to extend out of the shell assembly or retract into the shell assembly through the open opening.

In one embodiment, the first driving member is a sleeve having a spiral groove formed on an inner wall surface thereof, and the second driving member has a spiral protrusion engaged with the spiral groove formed on an outer wall surface thereof.

In one embodiment, the outer wall surface includes a first unit surface, the first unit surface occupies an angle of less than 360 ° in the circumferential direction of the second driving member, and the spiral protrusion is located on the first unit surface.

In one embodiment, the sleeve includes a body portion and a protruding ring portion, the protruding ring portion is connected to and protrudes from an outer side surface of the body portion, the housing assembly includes an upper housing and a lower housing, the open opening is located in the upper housing, and the upper housing and the lower housing are sleeved on the body portion and respectively abut against two opposite ends of the protruding ring portion.

In one of them embodiment, the host computer still includes mounting panel, cam and drive assembly, the mounting panel is located casing assembly is interior and seted up with open corresponding through-hole, the sleeve orientation has seted up heavy groove on the terminal surface of mounting panel, the cam with the mounting panel rotates to be connected, works as the sleeve rotates and makes the cam slide in or slide out the recess is with the butt when the terminal surface, the cam passes through drive assembly drives the visor seals or opens the through-hole.

In one embodiment, the transmission assembly includes a transmission member, a first spring and a second spring, the first spring is connected between the transmission member and the mounting plate, the second spring is connected between the protection cover and the mounting plate, and the transmission member is slidably disposed on the mounting plate and simultaneously abuts against the cam and the protection cover.

In one embodiment, the transmission member is provided with a clamping groove, the protective cover comprises a cover sealing part, a rotating part and a pressing part, the rotating part is rotatably arranged on the mounting plate and connected between the cover sealing part and the pressing part, the second spring is connected with the cover sealing part, and the pressing part is matched with the clamping groove.

In one embodiment, the transmission member has a first inclined surface, the cam has a second inclined surface abutting against the first inclined surface, and the first inclined surface is inclined at a set angle with respect to the axial direction of the sleeve.

In one embodiment, the sleeve has a first plane and a first cambered surface which define the boundaries of the sunken groove, the cam has a second plane and a second cambered surface, the first plane extends along the axial direction of the sleeve and can be pressed against the second plane, and the first cambered surface can slide along the second cambered surface.

In one embodiment, any one of the following schemes is included:

a limiting groove is formed in the first driving piece, a limiting bulge is arranged on the shell component, and the limiting bulge is matched with the limiting groove when the protective cover opens the open hole;

the shell assembly comprises a support at least partially accommodated in the first driving piece, a sliding groove is formed in the support, a positioning hole is formed in the sliding groove, the second driving piece comprises a guide part and a positioning boss arranged on the guide part, the guide part is in sliding fit with the sliding groove, and the positioning boss can be matched with the positioning hole to limit the limit sliding position of the second driving piece;

still including being located flexible circuit board and mainboard in the casing subassembly, flexible circuit board's one end with mainboard electric connection, flexible circuit board's one end be used for with atomizer electric connection.

One technical effect of one embodiment of the utility model is that: when the user stops using, can make first driving piece drive the second driving piece so that the atomizer retracts to within the casing subassembly to make the visor seal and open the mouth, prevent that pollutants such as external dust and liquid from constituting the pollution to the atomizer, avoid the user to absorb this pollutant when subsequently using, thereby improve the security of atomizer and whole electron atomizing device in the use. When the user need aspirate for first driving piece drives the uncovered opening of visor and drives the second driving piece simultaneously and so that the atomizer stretches out outside the casing subassembly, so can guarantee the convenience of electronic atomizing device in the use well.

Drawings

Fig. 1 is a perspective view of an electronic atomizer device according to an exemplary embodiment shown in the drawings, with the atomizer retracted into the housing assembly;

FIG. 2 is a schematic perspective sectional view of the electronic atomizer shown in FIG. 1;

FIG. 3 is a schematic diagram of a first exemplary exploded view of the electronic atomizer of FIG. 1;

FIG. 4 is a schematic exploded view of the electronic atomizer shown in FIG. 1;

FIG. 5 is a schematic view of a partially exploded structure of the electronic atomizer shown in FIG. 1;

FIG. 6 is a perspective view of an electronic atomizer device according to one embodiment with the atomizer extending outside the housing assembly;

FIG. 7 is a schematic perspective sectional view of the electronic atomizer shown in FIG. 6;

FIG. 8 is a schematic diagram of a first exemplary exploded view of the electronic atomizer shown in FIG. 6;

FIG. 9 is a schematic exploded view of the electronic atomizer shown in FIG. 6;

fig. 10 is a schematic perspective cross-sectional structural view of a sleeve in an electronic atomization device according to an embodiment;

fig. 11 is a schematic perspective view illustrating a connection between an atomizer and a second driving member in the electronic atomizer according to an embodiment of the present invention;

FIG. 12 is a perspective view of FIG. 11 from another perspective;

fig. 13 is a schematic perspective view illustrating a protective cover of an electronic atomizer according to an embodiment of the present disclosure;

FIG. 14 is a schematic perspective view illustrating a transmission member of the electronic atomizer according to an embodiment;

fig. 15 is a schematic perspective view illustrating a cam in the electronic atomizer according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1, 2, 3 and 5, an electronic atomizer 10 according to an embodiment of the present invention includes an atomizer 20 and a host 30, where the host 30 is configured to supply power to the atomizer 20. The main body 30 includes a second driving member 200, a housing assembly 300, a first driving member 400, a protective cover 500, a mounting plate 600, a transmission assembly 700, and a cam 800.

Referring to fig. 2 and 10, in some embodiments, the first driving member 400 may be a sleeve 401, the sleeve 401 may be substantially cylindrical, the sleeve 401 includes a body portion 420 and a protruding ring portion 410, the protruding ring portion 410 is connected to an outer side surface of the body portion 420 such that the protruding ring portion 410 is disposed around the body, and the protruding ring portion 410 protrudes a certain height in a radial direction with respect to the body portion 420, in other words, an outer diameter of the protruding ring portion 410 is larger than an outer diameter of the body portion 420. The housing assembly 300 includes an upper housing 310, a lower housing 320 and a bracket 900, wherein the upper housing 310 is sleeved on the upper end of the body portion 420 and abuts against the upper end of the protruding ring portion 410, the lower housing 320 is sleeved on the lower end of the body portion 420 and abuts against the lower end of the protruding ring portion 410, and the protruding ring portion 410 abuts between the upper housing 310 and the lower housing 320. When torque is applied to the collar portion 410 by hand, the entire sleeve 401 is driven to rotate relative to the upper and

lower cases

310 and 320. The inner wall surface of the sleeve 401 is provided with a spiral groove 430, and the spiral groove 430 can be wound 360 degrees relative to the central axis of the sleeve 401.

Referring to fig. 4 and 9, the mounting plate 600, the transmission assembly 700, the cam 800 and the three may be accommodated in a space surrounded by the upper casing 310, the mounting plate 600 may be fixedly connected to the upper casing 310, the upper casing 310 is provided with a through hole, and an end of the through hole forms an open opening 311 on an outer surface of the upper casing 310. The mounting plate 600 is formed with a through hole 610, and the through hole 610 and the through hole may be coaxially disposed to communicate with each other. The sleeve 401 is located below the mounting plate 600, the main body portion 420 is recessed downward toward an end surface 421 (upper end surface) of the mounting plate 600 to form a sunken groove 422, the main body portion 420 has a first plane 423 and a first arc surface 424, the first plane 423 defines a boundary of the sunken groove 422, the first plane 423 extends in the axial direction of the sleeve 401, so that the first plane 423 is a vertically arranged plane, the first arc surface 424 may be an arc surface, and a central angle corresponding to the arc surface may be 90 degrees or the like. The side circumferential surface of the body part 420 is further provided with a limit groove 440, the limit groove 440 extends along the vertical direction, the upper shell 310 is provided with a limit protrusion, and when the sleeve 401 rotates relative to the upper shell 310, the limit protrusion can slide into or out of the limit groove 440. The bracket 900 is received in a space defined by the sleeve 401, the upper case 310 and the lower case 320, the upper end of the bracket 900 is fixedly coupled to the mounting plate 600, and the lower end of the bracket 900 is fixedly coupled to the lower case 320, so that the bracket 900, the mounting plate 600 and the entire case assembly 300 are fixedly coupled to form a single body.

Referring to fig. 4 and 15, the cam 800 is rotatably coupled to the mounting plate 600 by a rotating shaft extending in a horizontal direction such that the cam 800 can rotate in a vertical plane with respect to the mounting plate 600. When the sleeve 401 rotates, the cam 800 may slide into the sunken groove 422 of the sleeve 401, or may slide out of the sunken groove 422 of the sleeve 401 to abut against the end surface 421. For example, the cam 800 has a second plane 810 and a second arc 820, and the second plane 810 matches with the first plane 423 in shape, and the two can be pressed against each other. The second arc 820 matches the shape of the first arc 424, and the second arc 820 may slide over the first arc 424. Specifically, when the first plane 423 and the second plane 810 are pressed against each other, the sleeve 401 is prevented from rotating in a specific direction relative to the housing assembly 300, for example, at this time, the sleeve 401 can only rotate clockwise but cannot rotate counterclockwise, and when the sleeve 401 rotates clockwise by a set angle, the second arc surface 820 gradually slides away from the first arc surface 424 until contacting with the end surface 421 of the body portion 420. Obviously, the cam 800 will rotate at a certain angle relative to the mounting plate 600 during the process of alternately pressing the second arc surface 820 against the first arc surface 424 and the end surface 421. For example, when the cam 800 moves from the first arc surface 424 to the end surface 421, the cam 800 rotates upward, and conversely, when the cam 800 moves from the end surface 421 to the first arc surface 424, the cam 800 rotates downward.

Referring to fig. 4, 13 and 14, in some embodiments, the transmission assembly 700 includes a first spring 710, a second spring 720 and a transmission member 730, the transmission member 730 is slidably disposed on a surface (upper surface) of the mounting plate 600 facing away from the sleeve 401, the first spring 710 may have a substantially circular arc shape, one end of the first spring 710 is fixed to the mounting plate 600, the other end of the first spring 710 is fixed to the transmission member 730, the transmission member 730 is provided with a first inclined surface 731, and the first inclined surface 731 is inclined at a certain angle with respect to the axial direction of the sleeve 401, that is, the first inclined surface 731 is a non-vertical plane. The cam 800 has a second inclined surface 830, and the shape of the second inclined surface 830 matches with that of the first inclined surface 731, and the two can be attached to each other to generate a pressing force. The second inclined surface 830 may slide along the first inclined surface 731 during rotation of the cam 800 relative to the mounting plate 600.

The protective cover 500 comprises a cover part 510, a rotating part 520 and a pressing part 530, the area occupied by the cover part 510 is the largest, the rotating part 520 is connected between the cover part 510 and the pressing part, namely, the rotating part 520 is arranged in the middle, and the protective cover 500 can be manufactured in an integrated forming mode. The rotating portion 520 is rotatably coupled to the mounting plate 600 by a rotating shaft extending in a vertical direction so that the entire protective cover 500 rotates in a horizontal plane. One end of the second spring 720 is fixed to the mounting plate 600, and the other end of the second spring 720 is fixed to the rotating part 520. The transmission member 730 is further provided with a slot 732, and the pressing portion 530 is accommodated in the slot 732, so that the pressing portion 530 presses against the sidewall of the slot 732 to apply a pressing force to the entire transmission member 730, and the slot 732 limits the movement of the pressing portion 530 to prevent the pressing portion 530 from being separated from the slot 732 and being unable to press the transmission member 730.

Referring to fig. 1-4, when cam 800 engages with groove 422 of sleeve 401, cover portion 510 is in first position 11, and cover portion 510 simultaneously closes both opening 311 and through-hole 610 in first position 11. Referring to fig. 6 to 9, when the torque is applied to the protruding ring portion 410 to drive the sleeve 401 to rotate clockwise, the second arc surface 820 of the cam 800 slides relative to the first arc surface 424 to gradually disengage from the first arc surface 424. During the process that the second inclined surface 830 slides relative to the first inclined surface 731, the cam 800 gradually rotates upwards and drives the second inclined surface 830 to move upwards relative to the first inclined surface 731, so that the cam 800 exerts a resisting force on the transmission member 730, the transmission member 730 slides relative to the mounting plate 600 to press the first spring 710, and the first spring 710 stores energy; meanwhile, the driving member 730 sliding relative to the mounting plate 600 applies a force to the pressing portion 530, so that the protective cover 500 rotates clockwise to gradually open the through hole 610 and the opening 311 of the cover 510, and at this time, the second spring 720 is stretched to store energy. When the second arc surface 820 of the cam 800 completely slides away from the first arc surface 424 and is pressed against the end surface 421 of the body part 420, the upward rotation angle of the cam 800 is the largest, the transmission member 730 slides to the limit position against the elastic force of the first spring 710, and finally the cover 510 rotates clockwise to the limit position against the elastic force of the second spring 720 to completely open the through hole 610 and the opening 311.

When the cap portion 510 is at the first position 11, a torque may be applied to the protruding ring portion 410 to drive the sleeve 401 to rotate counterclockwise, so that the second arc 820 is separated from the end surface 421 of the body portion 420 and is pressed against the first arc 424 until the second arc is matched with the sinking groove 422, in the process, the cam 800 rotates downward, the second inclined surface 830 slides downward relative to the first inclined surface 731, the first spring 710 releases energy to push the transmission member 730 to slide, meanwhile, the second spring 720 also releases energy to pull the cap portion 510 to rotate counterclockwise, and finally, the cap portion 510 completely closes the through hole 610 and the opening 311, and at this time, the cap portion 510 will be at the second position 12. Thus, the capping portion 510 closes the through-hole 610 and the open port 311 in the first position 11 and opens the through-hole and the open port 311 in the second position 12.

Referring to fig. 2, 11 and 12, the atomizer 20 is disposed through the sleeve 401, the atomizer 20 is used for atomizing the atomizing medium therein to form aerosol for a user to suck, and the second driving member 200 is fixedly disposed at the bottom of the atomizer 20. The second driving member 200 is detachably connected to the atomizer 20, for example, a screw connection between the second driving member 200 and the atomizer 20. The host 30 further includes a motherboard 120 and a flexible circuit board 130, one end of the flexible circuit board 130 is electrically connected to the motherboard 120, one end of the flexible circuit board 130 is electrically connected to the atomizer 20, and the motherboard 120 can control the operation of the atomizer 20 through the flexible circuit board 130. The second driving member 200 is substantially cylindrical in shape, and has a spiral protrusion 210 on an outer wall surface thereof, and the spiral protrusion 210 is engaged with a spiral groove 430 on an inner wall surface of the sleeve 401. When the sleeve 401 rotates relative to the housing assembly 300, the second driving member 200 and the sleeve 401 are driven to perform linear motion in an up-and-down reciprocating manner by the transmission effect of the screw pair formed by the screw protrusion 210 and the screw groove 430.

The outer wall surface of the second driving member 200 includes a first unit surface 240 and a second unit surface 250 connected to each other, the first unit surface 240 occupies an angle of less than 360 ° in the circumferential direction of the second driving member 200, the spiral protrusion 210 is located on the first unit surface 240, and the spiral protrusion 210 is not provided on the second unit surface 250. In other words, the helical groove 430 is wound less than 360 ° relative to the central axis of the second driver 200. This arrangement not only ensures that the helical projection 210 and the helical groove 430 are engaged to form a helical pair, but also simplifies the overall structure and volume of the second driving member 200.

When the cam 800 is engaged with the groove 422, the cover 510 is in the first position 11 to close the open hole 311 and the through hole 610, and the entire atomizer 20 is hidden in the housing assembly 300. When the sleeve 401 rotates clockwise, on one hand, the sleeve 401 will drive the cam 800 to disengage from the undercut 422 and abut against the end surface 421 of the main body 420, so that the cap 510 moves from the first position 11 to the second position 12 to open the through hole 610 and the opening 311, and on the other hand, the sleeve 401 will drive the second driving member 200 to move upward at the same time, so that the atomizer 20 moves upward along with the second driving member 200. Since the cover 510 has opened the through-hole 610 and the open port 311, the suction nozzle 110 at the upper end of the atomizer 20 may protrude from the open port 311 to be exposed outside the housing assembly 300, so that the user can suck through the suction nozzle 110. Of course, when the suction nozzle 110 is exposed outside the housing assembly 300, the limit protrusions of the upper case 310 are engaged with the limit grooves 440 of the sleeve 401, and when the limit protrusions are engaged with the limit grooves 440 to generate a click feeling, the sleeve 401 may be stopped from being continuously rotated.

On the premise that the suction nozzle 110 is located outside the housing assembly 300 and the cover portion 510 is located at the second position 12, the sleeve 401 can be rotated counterclockwise, at this time, on one hand, the sleeve 401 drives the second driving member 200 to move downward, so that the atomizer 20 moves downward along with the second driving member 200 and is retracted into the housing assembly 300 through the open opening 311 and the through hole 610, and then the suction nozzle 110 of the atomizer 20 is hidden in the housing assembly 300; on the other hand, the sleeve 401 will simultaneously drive the cam 800 to disengage from the end surface 421 of the body portion 420 and engage with the sunken groove 422, so that the cover portion 510 moves from the second position 12 to the first position 11 to close the through hole 610 and the open port 311. Of course, when the suction nozzle 110 is hidden in the housing assembly 300, the restricting protrusion of the upper case 310 is disengaged from the restricting groove 440 of the sleeve 401.

In the process of moving the atomizer 20 up and down relative to the housing assembly 300, the flexible circuit board 130 has a certain flexibility, so that the flexible circuit board 130 can deform to adapt to the position change of the atomizer 20 relative to the housing assembly 300.

Therefore, when the user stops sucking, the sleeve 401 can be rotated to move the atomizer 20 downward to be hidden in the housing assembly 300, and the protective cover 500 can close the open opening 311 and the through hole 610, so as to prevent the suction nozzle 110 of the atomizer 20 from being contaminated by external dust, liquid and other contaminants, and prevent the user from absorbing the contaminants during subsequent sucking, thereby improving the safety of the atomizer 20 and the whole electronic atomizer 10 in use. When the user needs to suck, it may be only necessary to rotate the sleeve 401 so that the protective cover 500 opens the through hole 610 and the opening 311, and to move the atomizer 20 upward to expose the suction nozzle 110. The convenience of the electronic atomization device 10 in use can also be ensured.

Referring to fig. 5, in some embodiments, the bracket 900 is provided with two sliding grooves 910, the sliding grooves 910 are provided with positioning holes 920, the sliding grooves 910 extend along the axial direction of the sleeve 401, the number of the sliding grooves 910 may be two, the two sliding grooves 910 are arranged at intervals, each sliding groove 910 is provided with two positioning holes 920, and the two positioning holes 920 are arranged at intervals up and down along the extending direction of the sliding groove 910. The second driving member 200 includes two guiding portions 220 and two positioning bosses 230, the end of each guiding portion 220 is provided with a positioning boss 230, and each guiding portion 220 is in sliding fit with different sliding grooves 910 respectively. When the guide portion 220 slides relative to the sliding slot 910 to engage the positioning protrusion with the positioning hole 920 at the lower end of the sliding slot 910, the second driving member 200 slides downward to the limit position, and when the guide portion 220 slides relative to the sliding slot 910 to engage the positioning protrusion with the positioning hole 920 at the upper end of the sliding slot 910, the second driving member 200 slides upward to the limit position. Therefore, the sliding slot 910 is engaged with the guiding portion 220, so as to improve the moving accuracy and smoothness of the second driving member 200 and the atomizer 20, and the limit position of the whole atomizer 20 in the up-and-down movement can be limited by the engagement of the positioning protrusion and the positioning hole 920, and the atomizer 20 can be prompted to slide to the corresponding limit position by the click feeling generated when the positioning protrusion is engaged with the positioning hole 920.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A host machine is used for being matched with an atomizer for use and is characterized by comprising a shell assembly, a protective cover, a first driving piece and a second driving piece, wherein the first driving piece is rotatably connected with the shell assembly and drives the second driving piece to slide relative to the shell assembly; in the process that the first driving piece drives the protective cover to open or close the open opening, the second driving piece drives the atomizer to extend out of the shell assembly or retract into the shell assembly through the open opening.

2. The machine of claim 1, wherein the first driving member is a sleeve having a spiral groove formed on an inner wall surface thereof, and the second driving member has a spiral protrusion formed on an outer wall surface thereof to engage with the spiral groove.

3. The host machine of claim 2, wherein the outer wall surface includes a first unit surface, the first unit surface occupying less than 360 ° of the circumferential direction of the second driving member, and the spiral protrusion is located on the first unit surface.

4. The mainframe according to claim 2, wherein the sleeve comprises a main body portion and a protruding ring portion, the protruding ring portion is connected to and protrudes from an outer side surface of the main body portion, the housing assembly comprises an upper housing and a lower housing, the open opening is located in the upper housing, and the upper housing and the lower housing are sleeved on the main body portion and abut against two opposite ends of the protruding ring portion respectively.

5. The host computer of claim 2, further comprising a mounting plate, a cam and a transmission assembly, wherein the mounting plate is located in the housing assembly and is provided with a through hole corresponding to the opening, the end surface of the sleeve facing the mounting plate is provided with a sinking groove, the cam is rotatably connected with the mounting plate, and when the sleeve rotates and enables the cam to slide into or out of the sinking groove to abut against the end surface, the cam drives the protective cover to close or open the through hole through the transmission assembly.

6. The host computer of claim 5, wherein the transmission assembly comprises a transmission member, a first spring and a second spring, the first spring is connected between the transmission member and the mounting plate, the second spring is connected between the protective cover and the mounting plate, and the transmission member is slidably disposed on the mounting plate and simultaneously pressed against the cam and the protective cover.

7. The mainframe according to claim 6, wherein the transmission member has a slot, the protective cover includes a cover sealing portion, a rotating portion and a pressing portion, the rotating portion is rotatably disposed on the mounting plate and connected between the cover sealing portion and the pressing portion, the second spring is connected with the cover sealing portion, and the pressing portion is engaged with the slot.

8. The main machine according to claim 6, wherein the transmission member has a first inclined surface, and the cam has a second inclined surface abutting against the first inclined surface, the first inclined surface being inclined at a set angle with respect to the axial direction of the sleeve.

9. The host machine of claim 6, wherein the sleeve has a first flat surface and a first arc surface that define the boundaries of the sinker, and the cam has a second flat surface and a second arc surface, the first flat surface extending in an axial direction of the sleeve and being capable of pressing against the second flat surface, the first arc surface being capable of sliding along the second arc surface.

10. The host of claim 1, comprising any one of the following schemes:

11. An electronic atomising device comprising an atomiser and a main unit as claimed in any one of claims 1 to 10, the atomiser being removably connected to the second drive member.