Patent Publication Number: US-9848646-B2

Title: Electronic cigarette and battery device thereof

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to smokers products, and more particularly relates to an electronic cigarette and a battery device applied thereto. 
     2. Description of Related Art 
     The electronic cigarette is also known as a virtual cigarette or an electronic atomizer. As a substitute for cigarette, the electronic cigarette is usually used for smoking cessation. The appearance and taste of electronic cigarette are similar to those of the conventional cigarette, while it does not contain tar, suspended particles and other harmful ingredients as the conventional cigarette. The related electronic cigarette includes a housing an atomizer device, a battery device, a liquid solution reservoir, a mouthpiece, and an end cover. The atomizer device, the battery device and the liquid solution reservoir are housed in the housing. The mouthpiece and the end cover are respectively mounted to two opposite ends of the cylindrical housing. The related electronic cigarette functions as a substitute of tobacco in a certain extend. 
     For the related electronic cigarette, air enters into the related electronic cigarette via the end cover, and further flows into the atomizer device by passing through the peripheral of the battery device. However, a size of the air flowing channel at the peripheral of battery device in related electronic cigarette being affected by various factors, such as the shape of the battery device, the slanting condition of the battery device being in the related electronic cigarette, the configuration of wires at the peripheral of the battery device, and the like, which may result in the amount of the smoke generated by the same batch of electronic cigarettes being different, namely, the manufactured electronic cigarettes is inconsistent. 
     SUMMARY 
     An improved electronic cigarette and a battery device thereof are provided to overcome the above-mentioned disadvantage. 
     To overcome the above mentioned disadvantage, the battery device applied to an electronic cigarette is provided. The battery device includes a cylindrical body, a first airflow channel, and two conductive members. The first air flowing channel extends axially through the cylindrical body. The conductive members are respectively mounted to opposite ends of the cylindrical body, and keep insulation from an anode and a cathode of the battery device. The two conductive members further are electrically connected to each other. 
     Wherein, the battery device further includes an air flowing pipe extending axially through the cylindrical body. The air flowing pipe defines the first airflow channel. 
     Wherein, the battery device further includes a first pluggable conductive member and a second pluggable conductive member. The first pluggable conductive member and the second conductive member are arranged at an end of the cylindrical body and are spaced apart from each other; the first pluggable conductive member is electrically connected to one of the anode and cathode of the battery device, the second pluggable conductive member is mounted on the battery device and is electrically connected to the other one of the anode and cathode of the battery device; the second pluggable conductive member forms one of the two conductive members. 
     Wherein, the battery device further includes a third pluggable conductive member, a fourth pluggable conductive member, and a fifth pluggable conductive member. The third pluggable conductive member, the fourth pluggable conductive member, and the fifth pluggable conductive member are arranged at the other end of the cylindrical body and are spaced apart from each other; the third pluggable conductive member is electrically connected to the second pluggable conductive member to form the other one of the two conductive members; the fourth pluggable conductive member and the fifth pluggable conductive member are electrically connected to the anode and cathode of the battery device directly. 
     Wherein, the battery device further includes a conductor. The conductor is coiled with insulating material and is embedded in the cylindrical body; opposite ends of the conductor extend out of opposite ends of the cylindrical body to form the second pluggable conductive member and the third pluggable conductive member respectively. 
     Wherein, the above-mentioned cylindrical body includes a shell, two end caps and a battery material; the battery material includes coiled multilayer film; the multilayer film includes a positive film, a negative film, and an insulation film; the conductor is coiled by the multilayer film. 
     An electronic cigarette is provided. The electronic cigarette includes each one of the above-mentioned battery device. 
     Wherein, the electronic cigarette further includes a housing. The inner diameter of the housing is suitable for the diameter of the cylindrical body. 
     Wherein, the electronic cigarette further includes an air switch disposed within the housing. The air switch includes a switch body and a second airflow channel extending through the switch body, the second airflow channel communicates with an end of the first airflow channel. 
     Wherein, the above-mentioned air body includes a controlling device. The controlling device includes a controlling circuit board, and a first pluggable conductive body, a second pluggable conductive body and a third pluggable conductive body arranged on a top surface of the controlling circuit board; the first pluggable conductive body, the second pluggable conductive body and the third pluggable conductive body pluggably engage with the third pluggable conductive member, the fourth pluggable conductive member, and the fifth pluggable conductive member respectively. 
     Wherein, the electronic cigarette further includes a atomizer device mounting base disposed within the housing. The atomizer device mounting base includes a main body, a supporting bear for mounting the atomizer device, and two fourth pluggable conductive bodies mounted to the bottom of the main body, the two fourth pluggable conductive bodies are electrically connected to the first pluggable conductive member and the second pluggable conductive member respectively. 
     Wherein, the above-mentioned supporting bear includes a base and a supporting post perpendicularly extends from the center of the top surface of the base, the top surface of the base further recesses to define two holes, the holes are blind holes and are arranged at opposite sides of the supporting post. 
     Wherein, the electronic cigarette further includes an atomizer device. The atomizer device includes a liquid-absorbing member with middle thereof being mounted in the receiving groove of the supporting post, a heating member mounted to the middle of the liquid-absorbing member, a sixth pluggable conductive member mounted to an end of the liquid-absorbing member and a seventh pluggable conductive member mounted to the other end of the liquid absorbing member, the sixth pluggable conductive member and the seventh pluggable conductive member are electrically connected to opposite ends of the heating member, and extend into the two mounting holes by passing through the holes respectively. 
     In the present invention, by virtue of the airflow channel defined in the cylindrical body of the battery device, it is easily to maintain the airflow channel being consistent, thereby enhancing the consistency of the products. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In combination drawings with embodiments below to further illustrate the present invention, in the drawings: 
         FIG. 1  is a perspective view of an electronic cigarette in some embodiments; the electronic cigarette includes a mouthpiece, an end cover, an atomizer device, a reservoir, an atomizer device mounting base, a battery device, and an air switch. 
         FIG. 2  is a cross-sectional view taken along line A-A of the electronic cigarette shown in  FIG. 1 . 
         FIG. 3  is a cross-sectional view taken along line B-B of the electronic cigarette shown in  FIG. 2 . 
         FIG. 4  is a perspective view of the mouthpiece of the electronic cigarette shown in  FIG. 1 . 
         FIG. 5  is a perspective view of the end cover of the electronic cigarette shown in  FIG. 1 . 
         FIG. 6  is a perspective view of the atomizer device mounting base of the electronic cigarette shown in  FIG. 1 . 
         FIG. 7  is a disassembled view of the atomizer device mounting base shown in  FIG. 6 . 
         FIG. 8  is a cross-sectional view of the atomizer device mounting base shown in  FIG. 6 . 
         FIG. 9  is a cross-sectional view of the main body shown in  FIG. 6 . 
         FIG. 10  is a cross-sectional view of the supporting bear shown in  FIG. 6 . 
         FIG. 11  is a perspective view of the atomizer device shown in  FIG. 1 . 
         FIG. 12  is a perspective view of the reservoir shown in  FIG. 1 . 
         FIG. 13  is a perspective view of the battery device shown in  FIG. 1 . 
         FIG. 14  is a cross sectional view of the battery device shown in  FIG. 13  taken along the axis thereof. 
         FIG. 15  is a perspective view of an end surface of the battery device shown in  FIG. 13 . 
         FIG. 16  is a perspective view of the air switch shown in  FIG. 1 . 
         FIG. 17  is a disassembled view of the air switch shown in  FIG. 16 . 
         FIG. 18  is a cross-sectional view of the air switch shown in  FIG. 16  taken along the axis. 
         FIG. 19  is a perspective cross-sectional view of the air switch shown in  FIG. 18 . 
     
    
    
     DETAILED DESCRIPTION 
     In combination with drawings, illustrative embodiments of the disclosure are below. The following explanation provides specific details for a thorough understanding of and enabling description for these embodiments. 
       FIGS. 1-3 , illustrate an electronic cigarette  1  in some embodiments of the present invention. The electronic cigarette  1  may include a housing  10 , a mouthpiece  20 , an end cover  30 , a atomizer device mounting base  40 , an atomizer device  50 , a reservoir  60 , a battery device  70 , and an air switch  80 . The mouthpiece  20  and the end cover  30  cover opposite ends of the housing  10  respectively. The atomizer device mounting base  40 , the atomizer device  50 , the reservoir  60 , the battery device  70  and the air switch  80  are disposed within the housing  10 . The atomizer device mounting base  40  is arranged in the middle of the housing  10 , and is used for supporting the atomizer device  50 . The atomizer device  50  is mounted to the atomizer device mounting base  40  and is located between the atomizer device mounting base  40  and the mouthpiece  20 , for atomizing liquid solution known as e-liquid. The reservoir  60  is mounted to the atomizer device mounting base  40  and wraps the atomizer device  50 . The battery device  70  is arranged between the atomizer device mounting base  40  and the end cover  30 , and is electrically connected to the atomizer device  50  for powering on the atomizer device  50 . The air switch  80  is arranged between the battery device  70  and the end cover  30 , and is electrically connected to the battery device  70 . The air switch  80  is adapted to sense air flowing into the electronic cigarette  1  and to control the atomizer device  50  to be powered on/off. 
     The housing  10  in some embodiments may be substantially cylindrical. The housing  10  may be made of elastic material, such as elastic plastic, whereby enabling deformation when a predetermined force is radially applied to the housing  10  by the user, to simulate a touch sensation of a real cigarette. It is noteworthy that the housing  10  may be elliptic-cylinderical or tube-like. The housing  10  may also be made of rigid material, such as steel. 
     Referring to  FIG. 4 , the mouthpiece  20  in some embodiments may be made of elastic material, such as silica gel. The mouthpiece  20  may include a cylindrical body  21  and an annular flange  23  connected to an end of the body  21 . The cylindrical body  21  defines a first central through hole  210 . The diameter of the body  21  is slightly greater than the diameter of a hole defined in corresponding end of the housing  10  for receiving the mouthpiece  20 , whereby enabling the mouthpiece  20  to tightly engage within the housing  10  by an interference fit, for avoiding leakage of the liquid solution via the clearance between the housing  10  and the mouthpiece  20 . The flange  23  may protrude radially and outwardly from an outer end of the body  21 . The outer diameter of the flange  23  is substantially equal to corresponding end of the housing  10  for receiving the mouthpiece  20 , thereby enabling the flange  23  abutting against the end surface of the housing  10  when the mouthpiece  20  is inserted into the housing  10  (see  FIG. 1 ). On one hand, the flange  23  is able to prevent the mouthpiece  20  from being inserted excessively into the housing  10 , on the other hand, the flange  27  is able to allow the mouthpiece  20  to be easily pulled out. 
     Referring to  FIG. 5 , in some embodiments, the end cover  30  may integrally formed by rigid plastic by injection molding. The end cover  30  may include a bottom wall  31  and a cylindrical sidewall  33  extending from the bottom wall  31 . The bottom wall  31  is adapted to cover corresponding end of the housing  10 , the sidewall  33  is tightly inserted into the housing  10 , whereby the end cover  30  is mounted to corresponding end of the housing  10 . The bottom wall  31  defines a plurality of through holes  310  for allowing air entering into the electronic cigarette  1 . The bottom wall  31  may include a transparent portion, whereby enabling light emitted by the light emitting unit  90  transmitting therethrough. 
     Referring to  FIGS. 6 and 8 , the atomizer device mounting base  40  in some embodiments may include a main body  41  engaging within the housing  10 , a supporting bear  43  for mounting the atomizer device  50 , and a pair of fourth pluggable conductive bodies  45  mounted to the bottom of the main body  41 . The fourth pluggable conductive bodies  45  may be made of metal, such as, copper, or aluminum, and are adapted to be pluggable engagement with the first pluggable conductive member  72  and the second pluggable conductive member  74  of the battery device  70  respectively. In some embodiments, the fourth pluggable conductive bodies  45  are designed as jacks, and the first and second pluggable conductive members  72 ,  74  are designed as plugs, which are suitable for and inserted into the connecting bodies  45 . It is noteworthy, in another some embodiments, the fourth pluggable conductive bodies  45  are designed to be plugs, and the first and second connecting members  72 ,  74  are designed to be jacks. 
     Referring to  FIG. 9 , the main body  41  in some embodiments may be substantially cylindrical. The diameter of the main body  41  is suitable for the inner diameter of the housing  10 , such that the main body  41  tightly engages with the inner sidewall of the housing  10 . The main body  41  may be integrally formed from rigid plastic. The main body  41  may include a top end surface  411  and a bottom end surface  412  opposite to the top end surface  411 . The center of the top end surface  411  recesses to define a receiving portion  410  for receiving the supporting bear  43 . The receiving portion  410  may be substantially cylindrical. The main body  41  in some embodiments may further define a second central through hole  414  and two mounting holes  416 . The mounting holes  416  are arranged at opposite sides of the second central through hole  414 . The second central through hole  414  and the mounting holes  416  extend from the bottom of the receiving portion  410  to the bottom end surface  412 . The second central through hole  414  is used for allowing air flow passing through. The mounting holes  416  are used for mounting the fourth pluggable conductive bodies  45  respectively. The main body  41  in some embodiments may further include a hollow sleeve  418 . The hollow sleeve  418  is disposed vertically on the bottom end surface  412 , and communicates with the second central through hole  414 . The inner diameter of the sleeve  418  is suitable for the diameter of the first air flowing pipe  73  of the battery device  70 , such that the sleeve  418  is able to sleeve on a top end of the first air flowing pipe  73 , thereby enabling air in the battery device  70  entering into the main body  41 . 
     Referring to  FIG. 10 , the supporting bear  43  in some embodiments may be integrally formed from soft plastic. The supporting bear  41  may include a base  431 , and a supporting post  433 . The supporting post  433  perpendicularly extends from a central portion of the top surface of the base  431 . The supporting bear  41  defines a central hole  430 . The central hole  430  extends along the axis of the supporting bear  41 , and extends through the base  431  and the supporting post  433 . The base  431  in some embodiments may be flat-cylindrical, and the shape and the size of the base  431  are suitable for that of the receiving portion  410 , such that the base  431  is able to be accommodated tightly within the receiving portion  410 . The central hole  430  faces and communicates with the second central through hole  414 , thereby enabling air in the main body  41  entering into the supporting bear  43 . 
     The top surface of the base  431  further recesses to define two holes  4310 , for allowing the sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  of the atomizer device  50  extending through. Preferably, the holes  4310  are blind holes, and are arranged at opposite sides of the supporting post  433 . The holes  4310  correspond to the mounting holes  416  respectively, thereby enabling the sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  of the atomizer device  50  extending into the mounting holes  416  by passing through the mounting holes  416  respectively. The supporting post  433  is used for supporting the atomizer device  50 . The end surface of the supporting post  433  recesses to define a receiving groove  4330  for receiving the atomizer device  50 . The central hole  430  faces the second central through hole  414  of the main body  41 , to allow air from the second central through hole  414  flowing into the atomizer device  50 . 
     Referring to  FIG. 11 , the atomizer device  50  in some embodiments may include a liquid-absorbing member  51 , a heating member  53 , a sixth pluggable conductive member  55  and a seventh pluggable conductive member  57 . The liquid-absorbing member  51  is mounted to the receiving groove  4330  of the supporting post  433  of the atomizer device mounting base  40 . The heating member  53  is mounted to the middle of the liquid-absorbing member  51 . The sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  are arranged to opposite ends of the liquid-absorbing member  51 , and are electrically connected to opposite ends of the heating member  53 . The liquid-absorbing member  51  in some embodiments may be cylindrical. The liquid-absorbing member  51  may be made of the fiber glass, and has a excellent capillarity performance. The heating member  53  in some embodiments may include metal wires, and coils on the middle portion of the liquid-absorbing member  51 . The sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  are connected to the bottom of the opposite ends of the liquid-absorbing member  51  respectively, and are electrically connected to the first pluggable conductive member  72  and the second pluggable conductive member  74  of the battery device  70 . 
     Referring to  FIG. 12 , the reservoir  60  in some embodiments may be substantially cylindrical, and is made from material having excellent liquid-absorbing performance, such as, cotton. The reservoir  60  defines an central hole  61 , for air flowing therethrough. The outer diameter of the reservoir  60  is suitable for the inner diameter of the housing  10 , such that the reservoir  60  is able to tightly inserted within the housing  10 . The inner diameter of the reservoir  60  is suitable for the diameter of the supporting post  433  of the supporting bear  43 , thereby enabling the reservoir  60  being tightly sleeved on the supporting post  433 . Referring to  FIG. 3  again, the reservoir  60  may further include an accommodating portion (not labeled). The accommodating portion allows opposite ends of the liquid-absorbing member  51  of the atomizer device  50  to extend through and further hold opposite ends of the liquid-absorbing member  51  firmly, thereby enabling the liquid solution in the reservoir  60  moving to the middle portion of the liquid-absorbing member  51  via opposite ends of the liquid-absorbing member  51 . In some embodiments, the sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  are embedded into the reservoir  60  and protrude out of the bottom surface of the reservoir  60 . 
     Referring to  FIGS. 13 to 15 , the battery device  70  in some embodiments may include a cylindrical body  71 , and a first air flowing pipe  73  extending axially through the cylindrical body  71 . The first air flowing pipe  73  defines a first airflow channel  730  for air passing through. The diameter of the cylindrical body  71  is suitable for the inner diameter of the housing  10 , such that the cylindrical body  71  is able to be tightly inserted within the housing  10 . An end of the first air flowing pipe  73  is coupled to the sleeve  418 , the other end of the first air flowing pipe  73  is coupled to the air switch  80 , thereby enabling air flowing from the air switch  80  to the atomizer device mounting base  40 . In some embodiments, by virtue of the first air flowing pipe  73 , air flow is able to pass through the battery device  70  via the first airflow channel  730 , the diameter of the first airflow channel  730  is able to be controlled easily, and the consistence of the amount of the smoke generated by the electronic cigarette  1  is improved. As a result, the size of the air flowing channel at peripheral of battery device in related art being affected by lots of factors can be avoided, wherein the mentioned factors may include the shape of the battery device, the slanting condition of the battery device being in the related electronic cigarette, the configuration of wires at the surrounding of the battery device, and the like. Additionally, the mentioned factors may result in the amount of the smoke generated the same batch of electronic cigarette being different, namely, the manufactured electronic cigarettes is inconsistent. It is noteworthy that the first air flowing pipe  73  in some embodiment can be omitted, and the first airflow channel  730  is directly defined by the cylindrical body  71 . 
     In some embodiments, the battery device  70  may further include a first pluggable conductive member  72  and a second pluggable conductive member  74 . The first pluggable conductive member  72  and the second pluggable conductive member  74  face the atomizer device mounting base  40 . The first pluggable conductive member  72  is electrically and directly connected to the anode of the battery device  70 . In other word, the first pluggable conductive member  72  electrically contacts with the anode of the battery device  70  without the help of other objects. The second pluggable conductive member  74  is not directly connected to the cathode of the battery device  70 . In other word, although the second pluggable conductive member  74  is mounted to the battery device  70 , the second pluggable conductive member  74  is not electrically connected to the cathode of the battery device  70 , namely, the second pluggable conductive member  74  keeps insulation from the cathode of the battery device  70 . The first pluggable conductive member  72  and the second pluggable conductive member  74  are arranged at an end surface of the cylindrical body  71  opposite to the atomizer device mounting base  40  and are spaced apart from each other. The first pluggable conductive member  72  and the second pluggable conductive member  74  are inserted into the first pluggable conductive bodies  45  respectively, and further are electrically connected to the sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  of the atomizer device  50 . 
     Referring also to  FIG. 15 , in some embodiments, the battery device  70  further includes a third pluggable conductive member  75 , a forth pluggable conductive member  76  and a fifth pluggable conductive member  78 , all of them face the air switch  80 . The third pluggable conductive member  75  is not electrically connected to the cathode of the battery device  70  directly, namely, the third pluggable conductive member  75  keeps insulation from the cathode of the battery device  70 , but the third pluggable conductive member  75  is electrically connected to the second pluggable conductive member  74  directly. In some embodiments, the second pluggable conductive member  74  and the third pluggable conductive member  75  may be opposite end portions of an electric conductor, which extends through and keeps insulation from the cylindrical body  71 . The forth pluggable conductive member  76  and the fifth pluggable conductive member  78  are electrically connected to the anode and the cathode of the battery device  70  directly, to supply power for the air switch  80 . The third pluggable conductive member  75  is electrically connected to the air switch  80 , and is further electrically connected to the fifth pluggable conductive member  78  by the air switch  80 , thus, is electrically connected to the cathode of the battery device  70  indirectly. 
     It is noteworthy that, in some embodiments, the first pluggable conductive member  72  may is electrically connected to the cathode of the battery device  70  directly. The second pluggable conductive member  74  is not electrically connected to the anode of the battery device  70  directly. The third pluggable conductive member  75  is not electrically connected to the anode of the battery device  70 , but is electrically connected to the second pluggable conductive member  74  directly. The third pluggable conductive member  75  is electrically connected to the air switch  80 , and is further electrically connected to the forth pluggable conductive member  76  by the air switch  80 , thereby enabling the third pluggable conductive member  75  is electrically connected to the anode of the battery device  70  indirectly. 
     The battery device  70  in some embodiments may be a lithium battery. The cylindrical  71  in some embodiments may include a shell  710 , two end caps  712  and a battery material  714 . The battery material  714  is formed by multilayer films wrapping together. The multilayer films may include a positive film, a negative film, and an insulation film. The battery device  70  may be manufactured by executing following steps: firstly, wrapping the multilayer films on the first air flowing pipe  73  for some coils; secondly, placing a conductor coiled with insulation therein, and then continue to wrap the rest multilayer films; then, inserting the battery material  714  into the shell  710 , and coupling the end caps  712  to opposite ends of the shell  710  respectively. Finally, letting the two ends of the electric conductor protruding from the end caps  712  respectively, so as to form the second pluggable conductive member  74  and the third pluggable conductive member  75  respectively. 
     Referring to  FIGS. 16 to 18 , the air switch  80  in some embodiments may include a switch body  81  and a second air flowing pipe  83  extending through the switch body  81 . The switch body  81  defines a second airflow channel  830  extending axially through the switch body  81 . In some embodiments, the switch body  81  is substantially flat-cylindrical. The diameter of the switch body  81  is suitable for the inner diameter of the housing  10 , thereby the switch body  81  is able to be tightly inserted within the housing  10 . As the second airflow channel  830  is configured to extend through the switch body  81 , the second airflow channel  830  is not limited by the housing  10 , thus, the size of the second airflow channel  830  can be designed to be various according to requirements, to meet various electronic cigarette  1 &#39;s request for different air flow. Furthermore, when the air switch  80  is applied to the electronic cigarette  1 , fixing mechanism for mounting the air switch  80 , such as pad or welding points can be arranged out of the second airflow channel  830 , to protect the air sucked into the second airflow channel  830  from being polluted, thereby protecting the users&#39; health. It is noteworthy that, in some embodiments, the second air flowing pipe  83  can be omitted, and the second airflow channel  830  is directly defined by the switch body  81 . 
     The switch body  81  in some embodiments may include a case  811 , an insulator  813 , an light emitting device  812 , a first conductive bracket  814 , a first electrode plate  815 , an insulating gasket  816 , a second conductive bracket  818 , a second electrode plate  817 , and a controlling device  819 . The insulator  813 , the light emitting device  812 , the conductive bracket  814 , the first electrode plate  815 , the insulating gasket  816 , the second conductive bracket  818 , the second electrode plate  817 , and the controlling device  819  are housed in the case  811 . The insulator  813  is used for insulating the first and second conductive brackets  814 ,  818  from the case  811 . The light emitting device  812  is used for simulating burning effect of real cigarette. The first conductive bracket  814  is adapted to support the first electrode plate  817 , and electrically connect the first electrode plate  815  with the light emitting device  812 . The second conductive bracket  818  is adapted to support the second electrode plate  817 , and electrically connect the second electrode plate  817  with the controlling device  819 . The controlling device  819  is adapted to control the battery device  70  to power on/off the atomizer device  50  and the light emitting device  812 . 
     Referring also to  FIGS. 17 and 18 , the case  811  in some embodiments may be substantially cylindrical, and be made of conductive material, such as metal, such that the case  811  is electrically conductive. The case  811  may include an annular bottom wall  8110 , a cylindrical sidewall  8112  protruding from an outer edge of the bottom wall  8110 , and a top wall  8114  fixed to a top end of the cylindrical sidewall  8112  away from the bottom wall  8110 . The outer diameter of the cylindrical sidewall  8112  is suitable for the inner diameter of the housing  10 . It should be understood that, to make the case  811  having conductive function, the case  811  is not limited to be made of conductive material, such as metal, the case  811  can be made of insulation material with conductive material being embedded therein. 
     The light emitting device  812  in some embodiments may include a driving circuit board  8121 , and an illuminating member  8123  fixed to a bottom surface of the driving circuit board  8121 . The illuminating member  8123  may include a lighting emitting diode (LED). The driving circuit board  8121  in some embodiments may further include a first central hole  8125  for allowing the second air flowing pipe  83  extending therethrough, and a plurality of first apertures  8127  arranged at a side of the first central hole  8125 . The diameter of the driving circuit board  8121  is suitable for the inner diameter of the cylindrical sidewall  8112 , thereby enabling the driving circuit board  8121  tightly engaging with the cylindrical sidewall  8122 . The driving circuit board  8121  in some embodiments is arranged at the top surface of the bottom wall  8110  of the case  811 , and is electrically connected to the bottom wall  8110 , such that the cathode of the battery device  70  is electrically connected to the light emitting device  812  via the controlling device  819  and the case  811 . 
     The insulator  813  in some embodiments may be substantially cylindrical. The outer diameter of the insulator  813  is suitable for the inner diameter of the case  811 , thereby enabling the insulator  813  tightly engaging with the cylindrical sidewall  8112 . The insulator  813  is mounted to the top surface of the driving circuit board  8121  of the light emitting device  812 . The top surface of the insulator  813  is spaced apart from the bottom surface of the top wall  8114  of the case  811  to form a gap for receiving the controlling device  819 . 
     The first conductive bracket  814  in some embodiments may be substantially cylindrical. The first conductive bracket  814  is disposed within the insulator  813 , and is arranged upon the top surface of the driving circuit board  8121  of the light emitting device  812 . The first conductive bracket  814  is electrically connected to the driving circuit board  8121 . The outer diameter of the first conductive bracket  814  is suitable for the inner diameter of the insulator  813 , thereby enabling the first conductive bracket  814  be tightly accommodated within the insulator  813 . 
     The first electrode plate  815  in some embodiments may be substantially ring-shaped. The first electrode plate  815  is electrically connected to the top end surface of the first conductive bracket  814 , such that the first electrode plate  815  is able to be electrically connected to the anode of the battery device  70  by the first conductive bracket  814 , the driving circuit board  8121 , the case  811  and the controlling device  819  in sequence. The first electrode plate  815  has a second central hole  8150  for allowing the air flowing pipe  83  extending through, and a plurality of second apertures  8152  for ventilation. The second apertures  8152  are spaced apart from each other and equidistantly surround the second central central hole  8150 . In some embodiments, both the first electrode plate  815  and the second conductive bracket  814  are made of metal, and the first electrode plate  815  and the conductive bracket  814  can be individual, or be integrally formed. 
     The insulating gasket  816  in some embodiments may include an outer gasket unit  8161  and an inner gasket unit  8163 . The outer gasket unit  8161  is mounted to an outer periphery of the first electrode plate  815 , and the inner gasket unit  8163  are mounted to an inner periphery of the first electrode plate  815 . 
     The second electrode plate  817  in some embodiments may be an annular conductive film. The second electrode plate  817  defines a third central hole  8170  for allowing the air flowing pipe  83  extending through. The second electrode plate  817  is mounted on the insulating gasket  816 . The outer periphery and the inner periphery of the second electrode plate  817  are supported by the outer gasket unit  8161  and the inner gasket unit  8163  respectively, and thus, the second electrode plate  817  is insulated from the first electrode plate  815 , whereby the first electrode plate  815  and the second electrode plate  817  cooperatively form a parallel-plate capacitor. Thus, when the second electrode plate  815  vibrates, the distance between the first electrode plate  815  and the second electrode plate  817  changes, such that the voltage is able to be changed. 
     The second conductive bracket  818  in some embodiments is substantially cylindrical. The lower end of the second conductive bracket  814  is disposed upon the second electrode plate  817 , and is electrically connected to the second electrode plate  817 , whereby enabling the second electrode plate  817  being electrically connected to the anode of the battery device  70  through the second conductive bracket  818  and the controlling device  819  in sequence. The outer diameter of the second conductive bracket  818  is substantially equal to the inner diameter of the insulator  813 , thereby enabling the second conductive bracket  818  being tightly accommodated within the insulator  183 . 
     The controlling device  819  in some embodiments may include a controlling circuit board  8191 , a first pluggable conductive body  8193 , a second pluggable conductive body  8195  and a third pluggable conductive body  8197 . The first connecting body  8193 , the conductive second connecting body  8195  and the third pluggable conductive body  8197  are mounted upon a top surface of the controlling circuit board  8191 . The first pluggable conductive body  8193 , the second pluggable conductive body  8195  and the third pluggable conductive body  8197  are engaged with the third pluggable conductive member  75 , the forth pluggable conductive member  76 , and the fifth pluggable conductive member  78  of the battery device  70  respectively. Wherein, the second pluggable conductive body  8195  and the third pluggable conductive body  8197  are engaged with the third pluggable conductive member  75  and the forth pluggable conductive member  76  respectively, to electrically connect the controlling circuit board  8191  to the anode and the cathode of the battery device  70 . The first pluggable conductive body  8193  engages with the third pluggable conductive member  75  of the battery device  70 , to electrically connect the third pluggable conductive member  75  to the cathode of the battery device  70  via the controlling circuit board  8191 . In detail, the first pluggable conductive body  8193  in the controlling circuit board  8191  is electrically connected to the third pluggable conductive body  8197  via an electronic switch, such as transistor or thyristor, such that the atomizer device  50  is powered on/off by controlling the controlling circuit board  8191 . 
     The controlling circuit board  8191  in some embodiments may be substantially ring-shaped, and has a fourth central hole  8190  for allowing the air flowing pipe  83  extending through. The controlling circuit board  8191  is disposed within the gap defined by the top wall  8114  and the top end surface of the second conductive bracket  818  and the insulator  813 , and is electrically connected to the top wall  8114  and the second conductive bracket  818 , thereby enabling the controlling circuit board  8191  being electrically connected to the driving circuit board  8121  and the second electrode plate  817 . The outer diameter of the controlling circuit board  8191  is suitable for the inner diameter of the case  811 , such that the controlling circuit board  8191  is able to be tightly engaged with the side wall of the case  811 . 
     The second air flowing pipe  83  in some embodiments is inserted within the central hole  8125  of the driving circuit board  8121 , the second central hole  8150  of the first electrode plate  815 , the inner gasket unit  8163 , the third central hole  8170  of the second electrode plate  817  and the fourth central hole  8190  of the controlling circuit board  8191  in sequence, and electrically connect the inner periphery of the controlling circuit board  8191  with the inner periphery of the driving circuit board  8121 . 
     The second air flowing pipe  83  in some embodiments may be substantially step-cylindrical, and is made of electrically conductive material. The second air flowing pipe  83  includes a first pipe  831 , a second pipe  832 , and a third pipe  833 . The out diameter of the second pipe  832  is greater than that of the first pipe  831 , and the out diameter of the third pipe  833  is greater than that of the second pipe  832 . Wherein the outer diameter of the first pipe  831  is suitable for the diameter of the first central hole  8125 , the outer diameter of the second pipe  832  is suitable for the diameter of the second central hole  8150  of the first electrode plate  815 , the diameter of the inner gasket unit  8163 , the diameter of the third central hole  8170  of the second electrode plate  817 , and the diameter of the fourth central hole  8190  of the controlling circuit board  819  respectively. Thus, when the second air flowing pipe  83  is inserted into the switch body  81 , a step between the first pipe  831  and the second pipe  833  abuts against and is electrically connected to the top surface of the driving circuit board  8121 , and a step between the second pipe  832  and the third pipe  832  abuts against and is electrically connected to the top surface of the controlling circuit board  8191 , thereby enabling the anode of the battery device  70  being electrically connected to the light emitting device  812  via the controlling device  819  and the second air flowing pipe  83  in sequence. In some embodiments, the second pipe  832  defines an extending hole  8320 . The inner space of the second pipe  832  communicates with the outside via the extending hole  8320 . The inner diameter of the third pipe  833  is suitable for the outer diameter of the bottom end of the first air flowing pipe  73 , such that the third pipe  833  can be sleeved on a bottom end of the first air flowing pipe  73  of the battery device  70 , and air in the second air flowing pipe  83  can flow into the first air flowing pipe  73 . 
     Referring also to  FIGS. 18 and 19 , the second electrode plate  817 , the first conductive bracket  814 , the driving circuit board  8121 , the first gasket  8161  and the second air flowing pipe  83  cooperatively define a balance chamber  85 . The balance chamber  85  is substantially annular. The first electrode plate  815  is accommodated within the balance chamber  85 . The balance chamber  85  communicates with the outside of the air switch  80  via the first apertures  8127  defined in the driving circuit board  8121 , to keep air pressure in the balance chamber  85  consistent with that of the outside of the air switch  80 . 
     The second electrode plate  817 , the second conductive bracket  818 , the controlling circuit board  8191  and the second air flowing pipe  83  cooperatively define an annular negative chamber  87 . The negative chamber  87  communicates with the inner space of the second air flowing pipe  83  via the extending hole  8320 . Thus, when air flows through the second air flowing pipe  83  quickly, a negative pressure is formed in the negative chamber  87 . At this time, a side of the second electrode plate  817  forms a negative pressure, and the other side of the electrode plate  817  keeps in balance with the outside pressure of the air switch  80 . Thus, the second electrode plate  817  is elastically deformed toward the first electrode plate  815 , and the capacitance of the a parallel-plate capacitor being composed of the first and second electrode plates  815 ,  817  is changed. Thereby providing a controlling signal to the control IC of the controlling circuit board  8191 . Accordingly, the control IC controls the electronic switch (such as transistor) of the controlling circuit board  8191  to connect the atomizer device  50  and the light emitting device  812  to the battery device  70 . As a result, the balance chamber  85 , the negative chamber  87 , the first electrode plate  815  and the second electrode plate  817  cooperatively form an airflow sensor for the switch body  81 . 
     The electronic cigarette  1  described above may be manufactured by executing flowing steps:
     (1) The atomizer device  50  is mounted into the receiving groove  4330  of the supporting post of the atomizer device mounting base  40 , with the sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  being inserted into the two holes  4310  respectively, and further being electrically connected to the two fourth pluggable conductive bodies  45  of the atomizer device mounting base  40  respectively;   (2) The sleeve  418  of the atomizer device mounting base  40  sleeves the top end of the first air flowing pipe  73  of the battery device  70 , and the two fourth conductive connecting bodies  45  of the atomizer device mounting base  40  sleeve the first pluggable conductive member  72  and the second pluggable conductive member  74  respectively;   (3) The third pipe  833  of the second air flowing pipe  83  of the air switch  80  sleeves the bottom end of the first air flowing pipe  73  of the battery device  70 , and the third pluggable conductive member  75 , the fourth pluggable conductive member  76 , and the fifth pluggable conductive member  78  are inserted into the first pluggable conductive body  8193 , the second pluggable conductive body  8195  and the third pluggable conductive body  8197  of the air switch  80  respectively;   (4) The two fourth pluggable conductive bodies  45  are flatted, thereby enabling the sixth pluggable conductive member  55  and the seventh pluggable conductive member  57  tightly engaging with the first pluggable conductive member  72  and the second pluggable conductive member  74  respectively;   (5) The atomizer device  50 , the atomizer device mounting base  40 , the battery device  70  and the air switch  80  are disposed within the housing  10 ;   (6) The mouthpiece  20  and the end cover  30  cover opposite ends of the housing  10 .   

     In use, when the user inhales the electronic cigarette  1  at the mouthpiece  20 , air firstly enters into the housing  10  via the through hole  310 , then reaches the atomizer device  50  by passing through the second air flowing pipe  83  of the air switch  80 , the first air flowing pipe  73  of the battery device  70  in sequence. When air flows into the air switch  80 , the air switch  80  detects airflow, and provides a control signal to the controlling circuit board  8191 . The controlling circuit board  8191  controls the battery device  70  to powering on the atomizer device  50  and the light emitting device  812 . At this time, the heating member  53  of atomizer device  50  is heating to atomize solution to generate smoke, the generated smoke together with air pass through the central hole  61  of the reservoir  60 , and further flow out of the electronic cigarette  1  via the first central through hole  210 , and the light emitting device  812  emits light. 
     It should be noteworthy that, the pluggable conductive bodies and pluggable conductive members in above embodiments are provided for allowing components being pluggable engagement with each other conveniently. In some embodiments, when there is no demand for pluggable engagement, various conductive members can be used to replace the pluggable conductive bodies and pluggable conductive members. 
     It should be pointed out that, for an ordinary person skilled in the art, many modifications and variations could be made without departing from the scope and spirit of the claims as appended. For the scope of the present invention, the disclosure of the present invention is illustrative but not restrictive, and the scope of the present invention is defined by the appended claims.