Electronic cigarette

1. An electronic cigarette comprising a squeezing module, the squeezing module comprising a first seal ring, a movable part, a spring, a fixed base, a sleeve, a linkage part, and a stopper; wherein:

the movable part is disposed in the fixed base, and an outer wall of the movable part is slidable along an inner wall of the fixed base;

the first seal ring is disposed between the outer wall of the movable part and the inner wall of the fixed base;

the spring is disposed in the fixed base and below the movable part to reset the movable part when a pressure force on the movable part is withdrawn;

an inner wall of the movable part is slidable along an outer wall of the sleeve;

the linkage part is disposed in the stopper;

the stopper is disposed on a bottom end of the movable part;

a section of the stopper is a step structure; and

when the movable part resets under the resilience force of the spring, the stopper pushes the linkage part to move upwards.

2. The electronic cigarette of claim 1 , wherein the squeezing module further comprises a third seal ring; the third seal ring is in contact with an upper surface and an inner surface of the linkage part; when the movable part is pressed down, the third seal ring, the movable part, and the linkage part are pressed together to form a seal to prevent air leakage; when the movable part is reset, the movable part is separated from the third seal ring to form a gap for air circulation.

3. The electronic cigarette of claim 1 , wherein the sleeve comprises an air passage; when the movable part is pressed down, air enters the air passage.

4. The electronic cigarette of claim 3 , wherein a built-in spring and a steel ball are disposed in the air passage; in the presence of air pressure, the steel ball moves upwards to open the air passage; when the air pressure is released, under the action of the built-in spring, the steel ball moves downward to close the air passage.

5. The electronic cigarette of claim 4 , wherein the squeezing module further comprises a pinhead and a contact pin; the pinhead is disposed on a top end of the contact pin and one end of the pinhead extends into an e-liquid tank; the contact pin is fixed on a top end of the sleeve; the contact pin comprises an air duct; the air passes through the air passage, the air duct, and an inner air passage of the pinhead to enter the e-liquid tank.

6. The electronic cigarette of claim 5 , wherein the squeezing module further comprises a guide tube and a dropper; one end of the guide tube is transversally disposed in the contact pin; the dropper is fixedly disposed around the other end of the guide tube; in the presence of air flow, e-liquid in the e-liquid tank flows into the contact pin via an inlet of the contact pin, through the guide tube, and flows out from the dropper.

7. The electronic cigarette of claim 6 , wherein the squeezing module further comprises a tank cover; a bottom end of the tank cover is disposed on the movable part; whereby pressing the tank, cover causes the movable part to slide in the fixed base.

8. The electronic cigarette of claim 7 , wherein the squeezing module further comprises a second seal ring disposed between the outer wall of the movable part and an inner wall of the tank cover.

9. The electronic cigarette of claim 8 , further comprising a heating module, wherein the heating module comprises a heater, a ceramic core, and a first base; the heater is fixed in the ceramic core and the ceramic core is fixed in the first base.

10. The electronic cigarette of claim 9 , wherein the heater is a cylinder comprising a concave inner surface and a metal wire in the shape of a spiral disc.

11. The electronic cigarette of claim 10 , wherein the electronic cigarette further comprises a second base; the squeezing module and the heating module are side by side disposed on the second base; the dropper of the squeezing module transversally extends into one side of the heating module and is disposed above the heater; the e-liquid drips into the heater for atomization.