Aerosol generating device and coupling device for aerosol generating device

Abstract

An aerosol generating device includes an aerosol generating device body including a cavity accommodating an aerosol generating substrate, a cap detachably coupled to the aerosol generating device body and covering at least a portion of the aerosol generating device body, and a coupling device arranged in one of the cap and the aerosol generating device body and detachably coupling the cap and the aerosol generating device body together.

What is claimed is: 
     
         1 . An aerosol generating device comprising:
 an aerosol generating device body including a cavity accommodating an aerosol generating substrate;   a cap detachably coupled to the aerosol generating device body and covering at least a portion of the aerosol generating device body; and   a coupling device arranged in one of the cap and the aerosol generating device body and detachably coupling the cap and the aerosol generating device body together,   wherein the other one of the cap and the aerosol generating device body includes a coupling groove into which a portion of the coupling device is inserted,   the one of the cap and the aerosol generating device body includes a through hole through which a portion of the coupling device passes, and   the coupling device includes a coupling protrusion passing through the through hole and inserted into the coupling groove, and an elastic bar coupled to the coupling protrusion and enabling the coupling protrusion to elastically move.   
     
     
         2 . The aerosol generating device of  claim 1 , wherein the coupling protrusion comprises a plurality of coupling protrusions which are symmetrically coupled to the elastic bar with respect to a center portion of the elastic bar. 
     
     
         3 . The aerosol generating device of  claim 1 , wherein an outer surface of the coupling protrusion includes a first portion extending in one direction, and a second portion extending in a direction different from the first portion. 
     
     
         4 . The aerosol generating device of  claim 1 , wherein the coupling protrusion comprises a first outer surface facing the aerosol generating device body from the cap, and a second outer surface opposite to the first outer surface, and
 a slope of the first outer surface is greater than a slope of the second outer surface.   
     
     
         5 . The aerosol generating device of  claim 1 , wherein the coupling device is detachably arranged in the one of the cap and the aerosol generating device body. 
     
     
         6 . The aerosol generating device of  claim 5 , wherein the one of the cap and the aerosol generating device body further comprises a mounting portion coupled to opposite ends of the elastic bar. 
     
     
         7 . The aerosol generating device of  claim 1 , wherein the one of the cap and the aerosol generating device body further comprises a restricting rib that restricts an extent to which the coupling protrusion protrudes from the cap. 
     
     
         8 . The aerosol generating device of  claim 7 , wherein the restricting rib is located outside the elastic bar and protrudes from an inner surface of the cap. 
     
     
         9 . The aerosol generating device of  claim 1 , wherein the one of the cap and the aerosol generating device body further comprises an elastic member pressing the coupling protrusion towards the through hole. 
     
     
         10 . The aerosol generating device of  claim 1 , wherein the elastic bar comprises an elastic bar body coupled to the one of the cap and the aerosol generating device body, and an elastic bar member coupled to the coupling protrusion and the elastic bar body and elastically moving together with the coupling protrusion. 
     
     
         11 . The aerosol generating device of  claim 10 , wherein the elastic bar member comprises a plurality of elastic bar members which are symmetrically coupled to the elastic bar body with respect to the elastic bar body, and
 a space communicating with the cavity is provided between the plurality of elastic bar members for the aerosol generating substrate to be inserted into the space.   
     
     
         12 . The aerosol generating device of  claim 1 , wherein a distance by which the coupling protrusion protrudes from the through hole before or when the cap and the aerosol generating device are coupled together is 0.3 mm to 1.0 mm. 
     
     
         13 . The aerosol generating device of  claim 1 , wherein a thickness of the elastic bar is 0.8 mm to 1.5 mm. 
     
     
         14 . The aerosol generating device of  claim 1 , wherein the coupling device is arranged in the cap,
 the coupling groove is arranged in the aerosol generating device body,   the coupling protrusion comes into contact with one inner surface of the aerosol generating device body and moves inside the cap while the cap and the aerosol generating device body are coupled together, and   the coupling protrusion passes through the through hole and protrudes outside the cap when the cap and the aerosol generating device body are separated from each other or coupled together.   
     
     
         15 . A coupling device for detachably coupling an aerosol generating device body and a cap together, wherein the aerosol generating device body includes a cavity accommodating an aerosol generating substrate and the cap covers at least a portion of the aerosol generating device body, the coupling device comprising:
 an elastic bar arranged in one of the cap and the aerosol generating device body; and   a coupling protrusion inserted into a coupling groove arranged in the other one of the cap and the aerosol generating device body,   wherein the elastic bar includes an elastic bar body coupled to the one of the cap and the aerosol generating device body, and an elastic bar member coupled to the coupling protrusion and the elastic bar body and elastically moving together with the coupling protrusion.