Leakage prevention structure for an electronic cigarette and electronic cigarette

1. A leakage prevention structure for an electronic cigarette, comprising an atomizer seat defining a first through hole, a bracket, and a sealing component, wherein an extension part corresponding to the first through hole is formed at one side of the bracket facing the atomizer seat, and the extension part is inserted in the first through hole to prevent the atomizer seat and the sealing component from leaning, and the sealing component is sleeved in an electronic cigarette body and cooperates with an inner surface of the electronic cigarette body to form interference fit;

wherein a first annular flange and a second annular flange are separately formed on a periphery of the sealing component, and the first annular flange is formed on a side of the sealing component that is closest to the bracket, and the first annular flange and the second annular flange form interference fits with the electronic cigarette body respectively;

wherein the bracket comprises a sleeve body, a sleeve cap, and a clamping part, and the sleeve body is a hollow cylinder with two opposite open ends, and the sleeve cap covers at one end of the sleeve body; grooves are defined in the sleeve body to divide the sleeve body into several parts; the bracket is configured to support and fix the atomizer seat and the sealing component, and a width of the bracket is less than a width of the electronic cigarette body to enable a gap for air circulation to be formed between the bracket and the electronic cigarette body;

wherein the extension part is a hollow cylinder extending along an axis of the sleeve cap, and the extension part is perpendicular to the sleeve cap; portion of the sleeve cap corresponding to the hollow cylinder portion of the extension part is also hollow; a certain distance is configured between the extension part and the sleeve body for air circulation;

wherein the clamping part is formed at a side of the bracket near the sealing component, and the clamping part is also a hollow cylinder and perpendicular to the sleeve cap, with the extending direction being opposite to that of the extension part;

wherein the sealing component is configured to fix the bracket, and the sealing component and the inner surface of the electronic cigarette body form interference fit to prevent tobacco tar leakage; recesses and a third through hole are defined in the sealing component, and the recesses are configured to accommodate the clamping part; one end of the sealing component partially sinks to form the recesses, and the size of the recesses match with that of the clamping parts to ensure the clamping parts are fixed in the recesses; the third through hole is configured to enable gas flow from an end of a battery to pass through, and the third through hole communicates with the hollow internal structure of the extension part, and is coaxial with the extension part;

wherein the atomizer seat is substantially cylindrical and has one open end, and the atomizer seat comprises a hollow atomizer seat body, an atomizer seat cap defining a first connection hole and covering on one end of the atomizer seat body, and a cylinder extending towards a direction that is away from the bracket along an edge of the first connection hole, and a second connection hole is defined in the cylinder; the first connection hole and the second connection hole are communicated to form the first through hole; a third annular flange and a fourth annular flange are separately formed on a periphery of the atomizer seat cap, and both the third annular flange and the fourth annular flange form interference fits with a case respectively; and

wherein the atomizer seat and the electronic cigarette body form interference fit, and the extension part of the bracket is inserted into the first connection hole of the atomizer seat cap; the sealing component and the electronic cigarette body form interference fit, and the recesses of the sealing component and the clamping part of the bracket fixedly engage with each other in order to enable the atomizer seat, the bracket, and the sealing component being sequentially fixed together.

2. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein both the number of the clamping part and the number of the recess are two, the two clamping parts are symmetrically positioned relative to an axis of the extension part, and the recesses and the clamping parts are arranged in an one-to-one relationship.

3. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein the atomizer seat cap further defines two wire holes, and the two wire holes are positioned on two opposite sides of the first connection hole respectively.

4. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein, a second through hole for air circulation is defined in a side wall of the extension part.

5. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein an air inlet hole is defined in a portion of electronic cigarette body corresponding to the gap, and the air inlet hole, the gap, the grooves, a second through hole, and the first through hole are communicated to form a first air flow channel.

6. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein a length of the sleeve body is less than a length of the extension part.

7. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein the third through hole, the extension part, and the first through hole are communicated to form a second air flow channel.

8. The leakage prevention structure for the electronic cigarette according to claim 7 , wherein the third through hole is positioned between the two recesses, and the third through hole and the extension part are set coaxially.

9. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein the bracket is made of plastic materials.

10. The leakage prevention structure for the electronic cigarette according to claim 1 , wherein both the atomizer seat and the sealing component are made of soft rubber materials.

11. An electronic cigarette, comprising the leakage prevention structure for the electronic cigarette in claim 1 .