Electronic cigarette, battery rod and atomizer

1. An electronic cigarette, comprising an atomizer and a battery rod; wherein a first connecting element and a second connecting element configured to connect the atomizer to the battery rod are provided at a junction between the atomizer and the battery rod, wherein, the first connecting element includes a first external electrode, a first internal electrode formed in one piece, and an elastic element; the first internal electrode extends through the first external electrode and is electrically insulated from the first external electrode; the elastic element abuts against the first internal electrode and is configured to provide an elastic force that is oriented towards the second connecting element to the first internal electrode;

the elastic element is made from insulating material; a through-hole through which the first internal electrode extends is defined in the elastic element; and the elastic element is sleeved between the first external electrode and the first internal electrode;

wherein the first internal electrode includes an electrode mast, a second flange arranged around an outer peripheral surface at one end of the electrode mast and a fourth flange arranged around an outer peripheral surface at the other end of the electrode mast; the electrode mast extends through a through-hole of the elastic element; one end of the elastic element abuts against the second flange and the other end of the elastic element abuts against the fourth flange;

wherein a diameter of the fourth flange is smaller than a diameter of the second flange;

wherein the first connecting element includes a fixed bracket; the fixed bracket is inserted between the first external electrode and the elastic element; a clamping ring configured to clamp the elastic element is formed on an internal peripheral face of the fixed bracket; wherein an external peripheral face of the elastic element elastically abuts against the clamping ring, and an internal peripheral face of the elastic element abuts against an external peripheral face of the first internal electrode;

wherein the elastic element is in form of a cylinder; the elastic element includes a first elastic portion, a second elastic portion and a third elastic portion connected to each other successively; wherein the second elastic portion is formed at one end of the first elastic portion, and a diameter of the second elastic portion is smaller than that of the first elastic portion; while the third elastic portion is formed at the other end of the second elastic portion, and a diameter of the third elastic portion is larger than that of the second elastic portion;

the second elastic portion is clamped in the clamping ring in a radial direction; an end face of the third elastic portion and an end face of first elastic portion abut against the second flange and the fourth flange respectively; and

wherein a plurality of grooves separated from each other at an equal interval are defined on a peripheral face and an end face of the first elastic portion, and are configured for deformation of the elastic element.

2. The electronic cigarette according to claim 1 , wherein, the elastic element is made from elastic rubber material.

3. The electronic cigarette according to claim 1 , wherein, several clamping portions are arranged on the second connecting element; the external electrode is in form of a hollow cylinder;

wherein the fixed bracket is substantially in form of a hollow cylinder and further includes a first bracket connecting portion and a second bracket connecting portion, several stopping arms protrude from an end face at one end of the first bracket connecting portion that is oriented towards the second connecting element, a number of the stopping arms is equal to a number of the clamping portions; wherein the stopping arms and an internal peripheral face of the first external electrode enclose together to form a clamping groove configured to clamp the clamping portion.

4. The electronic cigarette according to claim 3 , wherein, the internal peripheral face of the first external electrode is recessed to form a guide channel that is extending through a whole internal peripheral face of the first external electrode; and the guide channel is connected to the clamping groove;

during the assembly process, the clamping portion is inserted into the first connecting element along the guide channel; when the clamping portion reaches to a junction between the clamping groove and the guide channel, the second connecting element is rotated, thus the clamping portion is screwed into the clamping groove so that the atomizer is connected to the battery rod by a plug connection.

5. The electronic cigarette according to claim 4 , wherein, the first connecting element further includes an elastic locating piece; the elastic locating piece is mounted on the internal peripheral face of the first external electrode, and is configured to stop the clamping portion positioned in the clamping groove.

6. The electronic cigarette according to claim 5 , wherein, a mounting hole is defined on the internal peripheral face of the first external electrode; the mounting hole is located above the clamping groove; and the elastic locating piece is inserted in the mounting hole so as to stop the clamping portion in the clamping groove.