Electronic cigarette

Abstract

An electronic cigarette includes a housing. The housing has an accommodating space therein. A cartridge assembly, a circuit board and a switch are provided in the accommodating space. The electronic cigarette is compact in structure and easy to carry. The electronic cigarette solves the problem that the mouthpiece is easily dirty and unhygienic. The electronic cigarette is provided with a liquid chamber which can be refilled with the liquid. The electronic cigarette is reusable and environmentally friendly. The design of the refilling structure is ingenious and reasonable and is easy for operation.

What is claimed is: 
     
         1 . An electronic cigarette, comprising a housing, the housing having an accommodating space therein, a cartridge assembly, a circuit board and a switch being provided in the accommodating space; a rear cover of the housing being provided with a charging interface, the cartridge assembly, the switch and the charging interface being electrically connected to the circuit board;
 the circuit board being mounted in the housing, the cartridge assembly being detachably mounted above the circuit board; the housing being provided with a button assembly which can be moved up and down, the cartridge assembly being linked by the button assembly to move up and down;   the button assembly including a button and a first link portion, the cartridge assembly including a second link portion, the first link portion being linked with the second link portion, the button being linked with the switch;   wherein when the button is pushed upward, an upper end of the cartridge assembly is exposed out of an upper cover of the housing, the switch is linked by the button to be turned on; when the button is pushed downward, the second link portion is linked by the first link portion to move downward, the cartridge assembly is hidden in the upper cover, the switch is linked by the button to be turned off; when the button is pushed inwardly by an external force, the second link portion is released from the first link portion, the cartridge assembly and the button assembly are separated from each other, the cartridge assembly can be detached from the housing;   the cartridge assembly including a liquid chamber, a mouthpiece and a cap detachably mounted on the liquid chamber, the mouthpiece being exposed above the liquid chamber, the liquid chamber being provided with a liquid filling hole, the cap detachably blocking the liquid filling hole.   
     
     
         2 . The electronic cigarette as claimed in  claim 1 , wherein a support assembly is provided below the cartridge assembly, the support assembly movably abuts against a lower end of the cartridge assembly, the support assembly is mounted on the housing; the support assembly is linked with the button of the button assembly; when the button is pushed upward, the support assembly is linked by the button to move upward; when the button is pushed downward, the support assembly is linked by the button to move downward. 
     
     
         3 . The electronic cigarette as claimed in  claim 2 , wherein the button has a first positioning portion extending outwardly from a lower end thereof, the support assembly has a second positioning portion, and the first positioning portion is fitted on the second positioning portion. 
     
     
         4 . The electronic cigarette as claimed in  claim 3 , wherein the first positioning portion has a positioning protrusion, the second positioning portion has a positioning recess, and the positioning protrusion is fitted under the positioning recess. 
     
     
         5 . The electronic cigarette as claimed in  claim 1 , wherein the first link portion extends outwardly from one side of the button, an outer sidewall of the liquid chamber is recessed to form the second link portion, and the first link portion is fitted in the second link portion. 
     
     
         6 . The electronic cigarette as claimed in  claim 5 , wherein the first link portion is symmetrically provided with positioning buckles, the second link portion is provided with positioning slots, and the positioning buckles are fitted in the positioning slots. 
     
     
         7 . The electronic cigarette as claimed in  claim 1 , wherein the housing has a stroke guide groove for the button to move up and down, the button has a button main body, the button main body is fitted in the stroke guide groove, the housing has an opening for mounting the button assembly, and the button assembly is installed in the opening. 
     
     
         8 . The electronic cigarette as claimed in  claim 2 , wherein buffer springs are symmetrically provided above the support assembly, a bottom end of the liquid chamber is symmetrically provided with positioning posts, the positioning posts are fitted on the corresponding buffer springs; the support assembly is symmetrically provided with positioning pillars, the bottom end of the liquid chamber is symmetrically provided with positioning holes, and the positioning pillars are fitted in the corresponding positioning holes.