Cigarette heating device

Abstract

A cigarette heating device for heating a cigarette includes a main sleeve unit, a central heater, a movable element, an internal cup, and a restoring element. The main sleeve unit presets a first position and a second position along an axial direction. The movable element is movable between the first position and the second position. The internal cup is configured for receiving the cigarette. The internal cup is in linkage relation with the movable element. When the movable element is in the first position, the internal cup is adjacent to the central heater, so that the central heater heats the cigarette. When the movable element is in the second position, the internal cup is away from the central heater, so that the central heater is separated from the cigarette. The restoring element is configured for driving the movable element to restore from the second position to the first position.

What is claimed is: 
     
         1 . A cigarette heating device for heating a cigarette, comprising:
 a main sleeve unit presetting a first position and a second position along an axial direction thereof;   a central heater arranged in the main sleeve unit;   a movable element movable between the first position and the second position along the axial direction of the main sleeve unit;   an internal cup configured for receiving the cigarette, the internal cup being in linkage relation with the movable element, when the movable element is in the first position, the internal cup is adjacent to the central heater, so that the central heater heats the cigarette; when the movable element is in the second position, the internal cup is away from the central heater, so that the central heater is separated from the cigarette; and   a restoring element configured for driving the movable element to restore from the second position to the first position.   
     
     
         2 . The cigarette heating device according to  claim 1 , wherein the movable element is arranged outside of the main sleeve unit, the main sleeve unit nests the internal cup, the movable element comprises a first linkage on an inner surface, the internal cup has a second linkage, one of the first and the second linkages abuts against the other of the first and the second linkages via the main sleeve unit. 
     
     
         3 . The cigarette heating device according to  claim 2 , wherein the main sleeve unit defines a slot in a sidewall, the slot extends along an axial direction of the main sleeve unit, and the slot restricts at least one of the first linkage and the second linkage. 
     
     
         4 . The cigarette heating device according to  claim 3 , wherein the main sleeve unit comprises a first stage, the internal cup correspondingly comprises a second stage, the restoring element comprises a spring, the spring nests between the main sleeve unit and the internal cup, and two ends of the spring abut against the first stage and the second stage, respectively. 
     
     
         5 . The cigarette heating device according to  claim 1 , wherein the central heater comprises a fixing holder and a heating body arranged on the fixing holder; the internal cup defines an opening in a bottom thereof; when the movable element is in the first position, the internal cup is adjacent to the fixing holder, so that the heating body is inserted into the internal cup via the opening; when the movable element is in the second position, the internal cup is away from the fixing holder, so that the heating body is moved out of the internal cup via the opening. 
     
     
         6 . The cigarette heating device according to  claim 4 , wherein the main sleeve unit comprises:
 a battery tube;   a heater tube connected with the battery tube, the slot being defined by the heater tube, the central heater being accommodated in the heater tube; and   a top engaging ring connected to the heater tube, and the top engaging ring comprising a first stage.   
     
     
         7 . The cigarette heating device according to  claim 6 , wherein the slot has an opening at an end, so that at least one of the first and the second linkages is engaged in the slot by interference fit. 
     
     
         8 . The cigarette heating device according to  claim 7 , wherein each of the first and the second linkages is a protrusion. 
     
     
         9 . The cigarette heating device according to  claim 7 , wherein the second linkage, the second stage, and an outer surface of the internal cup are step shaped in sequence.