Electronic cigarette

1. An electronic cigarette, comprising:

a main body of the electronic cigarette;

wherein, a functional element, a protection mechanism and a magnetic locating member are provided on the main body of the electronic cigarette;

the protection mechanism is slidably connected to the main body of the electronic cigarette and is configured to cover the functional element; and

the magnetic locating member is connected to the protection mechanism magnetically, and is configured to prevent the protection mechanism from randomly sliding on the main body of the electronic cigarette in a case that the functional element is exposed or covered by the protection mechanism; and

the protection mechanism has two ends, the two ends of the protection mechanism are both provided with a retainer; and

the magnetic locating member is arranged between the retainers, and is configured to abut against the retainers to limit a sliding distance of the protection mechanism and prevent the protection mechanism from falling off the main body of the electronic cigarette.

2. The electronic cigarette according to claim 1 , wherein,

the protection mechanism is a sleeve which is sleeved on the main body of the electronic cigarette;

each of the retainers is a retaining ring protruding out of an inner surface of the sleeve;

the magnetic locating member is a connecting ring; and

the connecting ring is arranged between the retainers and is configured to abut against the retaining rings to limit a sliding distance of the sleeve.

3. The electronic cigarette according to claim 2 , wherein

the connecting ring is provided with at least two slide grooves;

the sleeve is provided with slide rails which are configured to cooperate with the slide grooves and are slidable axially with respect to the main body of the electronic cigarette;

the retaining rings are arranged at two ends of the slide rails; and

the slide rails are arranged in an axial direction of the main body of the electronic cigarette.

4. The electronic cigarette according to claim 3 , wherein,

each of the retaining rings is a magnet, and the connecting ring is made of ferrous materials;

or,

each of the retaining rings is made of ferrous materials, and the connecting ring is a magnet.

5. The electronic cigarette according to claim 1 , wherein,

the protection mechanism is provided with an opening configured to allow a user to use the functional element;

the protection mechanism is provided with at least two circumferential grooves along a circumferential direction of the main body of the electronic cigarette;

the magnetic locating member is provided with circumferential protrusions configured to cooperate with the circumferential grooves; and

the protection mechanism is slidable in the circumferential direction of the main body of the electronic cigarette through the cooperation between the circumferential grooves and the circumferential protrusions.

6. The electronic cigarette according to claim 5 , wherein,

the protection mechanism is further provided with first retaining strips arranged at two sides of the opening in an axial direction of the main body of the electronic cigarette; and

the main body of the electronic cigarette is further provided with a second retaining strip for cooperating with the first retaining strips, and the second retaining strip is configured to abut against the first retaining strips to limit a sliding range of the protection mechanism.

7. The electronic cigarette according to claim 6 , wherein,

each of the first retaining strips is a magnet, and the second retaining strip is made of ferrous materials;

or,

each of the first retaining strips is made of ferrous materials, and the second retaining strip is a magnet.

8. The electronic cigarette according to claim 1 , wherein,

the functional element comprises a push button and/or a display.

9. The electronic cigarette according to claim 1 , wherein,

the main body of the electronic cigarette is further provided with a suction end, a liquid container for containing cigarette liquid, an atomizer assembly for atomizing the cigarette liquid, and a battery rod assembly for supplying power to the atomizer assembly;

the liquid container is arranged on the main body of the electronic cigarette at an end away from the suction end; and

wherein the atomizer assembly comprises a heating wire assembly and a liquid-guiding mechanism.

10. The electronic cigarette according to claim 9 , wherein,

the atomizer assembly is arranged between the battery rod assembly and the liquid container, and the suction end is arranged at an outer side of an end of the battery rod assembly, in a middle of the battery rod assembly, or on the battery rod assembly at a position away from the atomizer assembly.

11. The electronic cigarette according to claim 9 , wherein, the liquid container is detachably connected to the atomizer assembly;

and/or,

the atomizer assembly is detachably connected to the battery rod assembly.

12. The electronic cigarette according to claim 9 , wherein, the atomizer assembly and the battery rod assembly are arranged coaxially.

13. The electronic cigarette according to claim 9 , wherein, the atomizer assembly further comprises:

an atomizer bracket;

a first thread bushing arranged at a top of the atomizer bracket and configured to be detachably connected to the battery rod assembly;

an atomizer electrode fixedly arranged inside the first thread bushing and electrically connected to the heating wire assembly;

an insulating ring arranged between the first thread bushing and the atomizer electrode; and

an atomizing sleeve arranged on the atomizer bracket, and the liquid-guiding mechanism is arranged inside the atomizing sleeve.

14. The electronic cigarette according to claim 11 , wherein,

a smoke channel for communicating the suction end with an air inlet is provided inside the battery rod assembly; and

the air inlet is arranged on an abutting surface of the atomizer assembly and the liquid container; or,

the air inlet is arranged on an outer wall of the atomizer assembly.

15. The electronic cigarette according to claim 13 , wherein, the battery rod assembly comprises:

a battery casing;

a battery disposed inside the battery casing;

a battery bracket provided inside the battery casing to fix the battery;

a battery electrode arranged at an end of the battery bracket and electrically connected to the battery and the atomizer electrode; and

a second thread bushing for cooperating with the first thread bushing to allow the battery rod assembly to be detachably connected to the atomizer assembly.

16. The electronic cigarette according to claim 13 , wherein,

a sealing ring for sealing the liquid container is provided at a connection portion between the atomizer bracket and the liquid container.

17. The electronic cigarette according to claim 9 , wherein,

an annular sealing plug with a through hole is provided to sealingly cooperate with an opening of the liquid container; and

a pierceable membrane for sealing the liquid container is arranged inside the through hole of the annular sealing plug.

18. The electronic cigarette according to claim 1 , wherein, a non-metallic elastic member is connected to each of the retainers and is configured to elastically abut against a surface of the main body of the electronic cigarette, or each of the retainers is a non-metallic member.