Abstract:
A smoke condensation resistant electronic cigarette includes absorption stem and a power source stem which are connected with each other detachably; an atomizer for transforming cigar liquid stored in the absorption stem into smoke and a smoke path for conducting the smoke out of the absorption stem are provided in the absorption stem. Here a smoke condensation resisting mechanism for preventing cooling and condensing of the smoke on an inner wall of the smoke path during flowing process is disposed in the absorption stem. The electronic cigarette of the present invention increases amount of smoke taken in by a smoker and prevents cigar liquid drips being inhaled by the smoker or greatly reducing amount of smoke taken in by the smoker. In addition, it facilitates reduction of manufacture and using cost, and also facilitates assembly, disassemble and replacement of the electronic cigarette.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to field of electronic cigarette and more particularly, relates to a smoke condensation resistant and magnetically connected electronic cigarette. 
       BACKGROUND OF THE INVENTION 
       [0002]    A conventional electronic cigarette includes an absorption stem and a power source stem. The absorption stem and power source stem are connected with each other by screwing. A cigar liquid cup is disposed in the absorption stem for storage of cigar liquid, an atomization mechanism for converting cigar liquid into smoke, and a connection mechanism for electrically connecting the atomization mechanism and power source stem. The cigar liquid cup, atomization mechanism and connection mechanism are connected as an entirety and inseparable from each other. The absorption stem is also provided with a smoke path for communicating smoke. The smoke path can be integrally formed with the absorption stem enclosure or be formed as an independent component. The smoke path is generally made from plastic or metal material. As plastic or metal has high surface thermal conductivity, when smoke atomized by the cup with higher temperature travels across the smoke path made of plastic or metal with low temperature, based on principles of convection and heat exchange of thermal conduction, smoke will be quickly cooled and condensed into cigar liquid on its inner wall before flowing out of the smoke path and therefore, smoke will be taken in the mouth of the smoker along gas flowing direction, thus making the cigar liquid be inhaled while less smoke be inhaled by the smoker when smoking a cigar. In addition, as the absorption stem is inseparable as entirety, the entire absorption stem should be necessarily replaced when it comes time to replace with a new cigar liquid cup and atomization mechanism due to running out of cigar liquid, resulting in increase in manufacture and use cost of the absorption stem. As a result, it is necessary to make separable absorption stem thus facilitating easy assembly, disassemble and replacement between the absorption stem and atomization mechanism. 
       SUMMARY OF THE INVENTION 
       [0003]    The objection of the present invention is to provide a smoke condensation resistant electronic cigarette for increasing amount of smoke taken in by a smoker and preventing cigar liquid being inhaled by the smoker or greatly reducing amount of smoke taken in by the smoker. 
         [0004]    To realize above objection, the present invention provides a smoke condensation resistant electronic cigarette which includes an absorption stem and a power source stem which are connected with each other detachably. An atomizer for transforming cigar liquid stored in the absorption stem into smoke and a smoke path for conducting the smoke out of the absorption stem are provided in the absorption stem. Herein, a smoke condensation resisting mechanism for preventing cooling and condensing of the smoke on an inner wall of the smoke path during flowing process is disposed in the absorption stem. 
         [0005]    Preferably the smoke condensation resisting mechanism is a heat insulation member disposed in the smoke path. 
         [0006]    Preferably the heat insulation member is a tubular component made of material with low surface thermal conductivity. 
         [0007]    Preferably an outer side wall of the heat insulation member is sealably connected with an inner wall of the smoke path. 
         [0008]    The smoke condensation resisting mechanism is the smoke path and the smoke path is an independent tubular component constructed of heat insulation material. 
         [0009]    Preferably the absorption stem further includes a connector for connecting the atomizer and power source stem and supplying power source of the power source stem to the atomizer. One end of the connector is magnetically connected with the atomizer, while the other end thereof is detachably connected with the power source stem. 
         [0010]    A connection end, which is connected to the connector, of the atomizer is provided with a first connection mechanism. The first connection mechanism includes a first base body serving as a first electrode of the first connection mechanism and a first post mounted on the first base body by a first insulation sleeve and serving as a second electrode of the first connection mechanism. A connection end, which is connected to the atomizer, of the connector is provided with a second connection mechanism. The second connection mechanism includes a second base body serving as a first electrode of the second connection mechanism and a second post mounted on the second base body by a second insulation sleeve and serving as a second electrode of the second connection mechanism. A first magnetic absorption component and a second magnetic absorption component are formed or partially formed on the first base body and second base body respectively, the first and second magnetic absorption components being able to be magnetically absorbed to each other. The first and second magnetic absorption components are magnetically absorbed to each other such that the first base body and second base body are pressed against each other and the first post and second post are also pressed against each other. 
         [0011]    Preferably the first base body is of a cylindrical shape and the first post is inserted into a middle portion of the first base body by the first insulation sleeve. The second base body is of a cylindrical shape and the second post is inserted into a middle portion of the second base body by the second insulation sleeve. The second post passes through the second insulation sleeve, and the second insulation sleeve is secured in the second base body. One end of the second insulation sleeve opposing to the second post is provided with a power source stem upper post for electrically connecting to an electrode inside of the power source stem. The power source stem upper post is held in the second insulation sleeve by a locating sleeve. A spring is also provided in the second the insulation sleeve. The two ends of the spring are pressed against the second post and the power source stem upper post respectively such that both of the second post and power source stem upper post are extended out of the second insulation sleeve. Correspondingly, one end of the power source stem connected to the connector is provided with a power source stem lower post pressed against the power source stem upper post. 
         [0012]    Preferably, the second insulation sleeve is a cylinder one end of which is provided with a top wall and the other end thereof is opened. The second insulation sleeve includes a side wall, a top wall, and a rim axially and outwardly extended from the top wall. A cavity for receiving the spring is defined collectively by the side wall and top wall. A post passing hole is defined in the top wall through which the second post passes. The second base body is of a hollow cylinder construction. One end of the second base body is inserted and secured in the connector, while the other end thereof is formed with an externally threaded connector for connecting with the power source stem. Correspondingly, the power source stem is provided with an internally threaded connector for engaging it. The power source stem lower post is contained in the internally threaded connector. The power source stem lower post is held in the internally threaded connector by a lower post insulation sleeve. A power source is disposed in the power source stem. The internally threaded connector and power source stem lower post are electrically connected to a first electrode and a second electrode of the power source respectively. The second insulation sleeve is inserted into the second base body and is pressed against the second base body by its side wall. At the same time, the second insulation sleeve passes through a permanent magnet in a middle portion of which an axially extended hole is defined and the permanent magnet is fixed to the second base body by its rim. 
         [0013]    Preferably, the connector has a connector casing for holding the second connection mechanism. The connector casing is of an axially extended cylinder. One end of the connector casing is provided with the second connection mechanism, while the other end thereof is intended for insertion of the first connection mechanism thereinto such that it will be magnetically connected to the second connection mechanism. 
         [0014]    Preferably, the atomizer includes an absorption sleeve, a cigar liquid cup disposed in the absorption sleeve for storage of cigar liquid, and an atomization mechanism for transforming cigar liquid into smoke. The first and second electrodes of the atomization mechanism are electrically connected to the first and second electrodes of the first connection mechanism respectively, that is, are electrically connected to the first post and first base body. 
         [0015]    Preferably, the absorption sleeve includes an exposed portion and an insertion portion for being inserted into the connector and connected to the same. A locating step is defined between the insertion portion and the exposed portion. The insertion portion is inserted into the connector and is held in place by the locating step. 
         [0016]    Preferably, the cigar liquid cup includes a cup barrel for storage of cigar liquid and a liquid guiding component for guiding the cigar liquid inside the cup body to the atomization mechanism so as to atomize the cigar liquid. 
         [0017]    Preferably, the cup barrel is a cup body one end of which is opened while the other end thereof is closed. The cup body is of an annular shape, and is integrally formed with the absorption sleeve. The liquid guiding component includes a liquid isolating member disposed on the bottom of the cup body and a liquid storage member attached on the bottom of the liquid isolating member. A plurality of liquid guiding holes is defined in the liquid isolating member. The liquid isolating member is pressed tightly against the open end of the cup barrel for sealing the cigar liquid. The liquid storage member is pressed against and secured on an inner wall of the absorption sleeve by its side wall. One end of the liquid storage member is tightly pressed against the liquid isolating member so as to hold the liquid isolating member on the bottom of the cup barrel, while the other end of the liquid storage member is coupled with the atomization mechanism. The cigar liquid from the cup barrel is soaked into a liquid isolating plate and then is absorbed by and stored into the liquid storage member to be further absorbed and atomized by the atomization mechanism. 
         [0018]    Preferably, the first magnetic absorption portion is entirely formed of conductive magnet or magnetic material. Alternatively, part of the first magnetic absorption portion may be made of conductive material. The second magnetic absorption portion is entirely formed of conductive magnet or magnetic material. Alternatively part of the second magnetic absorption portion may be made of conductive material. 
         [0019]    Using the above technical solution, the following advantages may be obtained for the present invention. At first, a smoke condensation resistant mechanism is disposed in the absorption stem, thus increasing amount of smoke taken in by a smoker and preventing cigar liquid drips being inhaled by the smoker or greatly reducing amount of smoke taken in by the smoker. Secondly, the atomizer and connector are separately constructed and therefore, after running out of the cigar liquid in the atomizer, it only needs to replace the atomizer other than the entire machine, thus facilitating reduction of manufacture and using cost. Furthermore, the first connection mechanism of the atomizer is inserted into the connector and is magnetically connected to the second connection mechanism of the connector, thus facilitating assembling and disassembling of the atomizer and connector. In addition, the second connection mechanism is provided with a second post which is always exposed out of the second insulation sleeve and a power source stem upper post. The second post and the power source stem upper post are connected to the first electrode and the power source stem lower post of the atomizer and power source stem respectively, thus making the connection of the connector with the circuits of the atomizer and power source stem more reliable. Moreover, a liquid guiding component is disposed on the bottom of the cigar liquid cup, and combination of its liquid isolating member and liquid storage member leads to better liquid guiding effects. Finally, unique gas path is formed in the electronic cigarette which makes gas flowing more smoothly between the electronic cigarette and external environment. 
         [0020]    The embodiments of the invention are described in detail in conjunction with the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0021]      FIG. 1  is a front view of an electronic cigarette of the present invention; 
           [0022]      FIG. 2  is an exploded view of an electronic cigarette of the present invention; 
           [0023]      FIG. 3  is a cross-sectional view of an electronic cigarette of the present invention; 
           [0024]      FIG. 4  is an exploded view of an atomizer of an electronic cigarette of the present invention; 
           [0025]      FIG. 5  is a cross-sectional view of an atomizer of an electronic cigarette of the present invention; 
           [0026]      FIG. 6  is an exploded view of a connector of an electronic cigarette of the present invention; 
           [0027]      FIG. 7  is a cross-sectional view of a connector of an electronic cigarette of the present invention; and 
           [0028]      FIG. 8  is a cross-sectional view of a power source stem of an electronic cigarette of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0029]    It is noted that, in case no interference is resulted in, the embodiments and features contained therein may be combined with each other. The present invention is described in greater detail in conjunction with the accompanying drawings and embodiments. 
         [0030]    As shown in  FIGS. 1-8 , the present invention provides a smoke condensation resistant electronic cigarette. The electronic cigarette includes an absorption stem  90  and a power source stem  95 . The absorption stem  90  is constructed of an atomizer  91  and a connector  92  which are connected with each other by insertion. The connector  92  is disposed between the atomizer  91  and power source stem  95  for connecting the atomizer  91  and power source stem  95  and transferring electricity inside the power source stem  95  to the atomizer  91 . One end of the connector  92  is magnetically connected to the atomizer  91 , whereas the other end thereof is detachably connected to the power source stem  95 . A connection end of the atomizer  91  connected to the connector  92  is provided with a first connection mechanism  5 . Correspondingly, a connection end of the connector  92  connected to the atomizer  91  is provided with a second connection mechanism  6 . The atomizer  91  and connector  92  are connected to each other magnetically. The atomizer  91  and connector  92  are adsorptively connected with each other by insertion of one into the other one. In this embodiment, the direction indicated in  FIG. 1  is referenced. 
         [0031]    As shown in  FIGS. 4-5 , the atomizer  91  includes an absorption sleeve  1  of a hollow cylinder shape, an atomization device  2 , a cigar liquid cup  3 , a nozzle case  4  with a venting hole (not labeled) and a first connection mechanism  5  for connecting to the connector  92 . The nozzle case  4  and first connection mechanism  5  are mounted on two ends of the absorption sleeve  1  respectively. The atomization device  2  and cigar liquid cup  3  are contained in the absorption sleeve  3 . The absorption sleeve  1  includes an exposed portion  11  exposed out of the connector  92  and an insertion portion  12  for being inserted into the connector  92 . A locating step  13  is formed between the exposed portion  11  and insertion portion  12 . The first connection mechanism  5  is disposed at one end of the insertion portion  12  of the connector  92 . A venting hole is defined in the absorption sleeve  1  and is axially extended. 
         [0032]    The first connection mechanism  5  includes a first base body  51  using as a first electrode of the first connection mechanism, a first post  52  using as a second electrode of the first connection mechanism, and an insulation sleeve  53 . A venting hole is defined in the middle portion of the first post  52 . The first post  52  is inserted and secured into the first insulation sleeve  53 . The first post  52  is inserted into the middle portion of the first base body  51  by the first insulation sleeve  53 , and the first post  52  constitutes together with the first insulation sleeve  53  a first post component. In this embodiment, the first base body  51  and first post  52  work as a first electrode (for example the negative electrode) and second electrode (for example the positive electrode) of the first connection mechanism respectively. The first base body  51  is made of magnetic material such as iron capable of being absorbed by magnet, and is inserted into the absorption sleeve  1  for pressing against the atomization device  2 . The shape of the first base body  51  conforms to the inner wall of the absorption sleeve  1  and is of a cylindrical shape. The first base body  51  is pressed against and fixed to an inner wall of a connection end of the atomizer  91  by its outer wall. A locating rim is radially outwardly extended from the side wall of the end portion of the first base body  51  for engaging an end portion of the absorption sleeve  1 . A locking ring is formed on the inner wall of the first base body  51  for mounting the first post  52  thereon, and the first post  52  is held in the locking ring through the first insulation sleeve  53 . A venting hole is defined in middle portion of the first post  52  and extends axially. 
         [0033]    The atomization device  2  includes an atomization mechanism  21 , an atomization mechanism control circuit board  22  and a circuit board holding base  23  for receiving and holding the atomization mechanism control circuit board  22 . In present embodiment, the atomization mechanism  21  is placed in the absorption sleeve  1 , whereas the atomization mechanism control circuit board  22  and circuit board holding base  23  are placed in the power source stem  95 . A miniature pneumatic switch is provided on the atomization mechanism control circuit board  22  for switching on the control circuit so that the atomization mechanism  21  works. 
         [0034]    The atomization mechanism  21  is used for converting cigar liquid into smoke, and includes an electric heater coil  211 , a liquid guiding member  212  for supporting the electric heater coil  211  and absorbing cigar liquid, and an atomization base  213  for supporting the liquid guiding member  212 . The electric heater coil  211  is enwound on the liquid guiding member  212 . The liquid guiding member  212  is able to absorb and store cigar liquid, and may be made of material with good liquid absorption and isolation ability such as glass fiber or cotton. In this embodiment, the liquid guiding member  212  is contained and secured in the atomization base  213 . The two ends of the electric heater coil  211  pass through the atomization base  213  and then are electrically connected with the positive and negative electrodes of the connector  92 . The atomization base  213  is substantially of a cylinder shape, and a holding groove is defined therein for holding the liquid guiding member  212 . A venting hole is defined in the middle portion of the atomization base  213 . A wire guiding hole is defined at two sides of the venting hole and is extended axially for passing through the electric heater coil. The atomization base  212  is pressed against and secured on the inner wall of the absorption sleeve  1  through its side wall. Another end, on which the holding groove is formed, of the atomization base  213  is connected with the first base body  51  such that the atomization base  213  is held in the absorption sleeve  1  by the first base body  51 . In addition, the liquid guiding member  212  is connected with the cigar liquid cup  3  so that the liquid guiding member  212  will absorb cigar liquid flowing out of the cigar liquid cup  3 . 
         [0035]    The cigar liquid cup  3  includes a cup barrel  31  for storage of cigar liquid and a liquid guiding component for guiding cigar liquid contained in the cup barrel  31  to the atomization mechanism  21  for atomization of cigar liquid. One end of the cup barrel  31  is opened, while the other end is closed. The cup barrel  31  is a cup body one end of which is opened while the other end thereof is closed. The cup barrel is  31  of an annular shape, and is integrally formed with the absorption sleeve  1 . The liquid guiding component includes a liquid isolating member  32  disposed on the bottom of the cup barrel and a liquid storage member  33  attached on the bottom of the liquid isolating member  32 . A plurality of liquid guiding holes is defined in the liquid isolating member  32 . The flow rate of the cigar liquid is determined by size and number of the liquid guiding holes. The liquid isolating member  31  is pressed tightly against the open end of the cup barrel  31  for sealing the cigar liquid. The liquid storage member  33  works like sponge to absorb and store liquid and is made from high temperature resistant material with liquid absorption and storage ability. The liquid storage member  33  is pressed against and secured on an inner wall of the absorption sleeve  1  by its side wall. One end of the liquid storage member  33  is tightly pressed against the liquid isolating member  32  so as to hold the liquid isolating member  32  on the bottom of the cup barrel  31 , while the other end of the liquid storage member  33  is coupled with the liquid guiding member  212 . The cigar liquid from the cup barrel  31  is soaked into a liquid isolating plate  31  and then is absorbed by and stored into the liquid storage member  32  to be further absorbed by the liquid guiding member  212  and atomized by the electric heater coil  211 . 
         [0036]    A smoke path  35  of a barrel shape is defined in the middle portion of the cup barrel  31  for conducting smoke. In this embodiment, the smoke path  35  is integrally formed with the cup barrel  31 . The cup barrel  31  is constructed of metal or plastic. A though hole is defined in the middle portion of the smoke path  35  and is extended axially. As the smoke path  35  is made of the same metal or plastic material as the cup barrel  31 , to prevent quick condensation of smoke into cigar liquid on the inner wall of the smoke path  35  before smoke flowing out of the smoke path  35 , a smoke condensation resisting mechanism for preventing condensation of cigar liquid is disposed in the cup barrel  31 . The smoke condensation resisting mechanism may be implemented by following two manners. According to one manner, a heat insulation component  36  made of material with low surface thermal conductivity is added in the smoke path  35 . The heat insulation component  36  passes through the smoke path  35 , and is a tubular component axially arranged. Smoke is conducted out of the smoke path  35  from through holes of the heat insulation component  36 . To obtain better condensation preventing effect, an outer side wall of the heat insulation component  36  is sealably connected to the inner wall of the smoke path  35 . The length of the heat insulation component  36  is no greater than that of the smoke path  35 . In present embodiment, the outer side wall of the heat insulation component  36  is interference-fitted with the inner wall of the smoke path  35  for realizing sealed connection therebetween. The material with low surface thermal conductivity is selected from any one of the following materials: glass fiber, fiber tube, wood pulp fiber tube, hard paper tube or wood tube. 
         [0037]    According to a second manner, the smoke path made of material with low surface thermal conductivity as used in the first manner is employed. Here, the smoke path is independent of cup barrel  31  and is a tubular component having an axially extended through hole through which smoke goes out of the smoke path. 
         [0038]    The smoke condensation resisting mechanism according to above two manners has advantages. As material with low surface thermal conductivity has low heat absorption speed, smoke inside the smoke path  35  will not be condensed into cigar liquid so quickly; or, smoke will be inhaled by the smoker before condensing, thus avoiding cigar liquid being taken in by the smoker, or significantly reducing amount of cigar liquid absorbed into mouth of the smoker. Moreover, as no condensation of smoke occurs, all smoke is effectively inhaled by the smoker, thus obtaining great amount of smoke, getting better smoking experience, and resulting in more real effects. 
         [0039]    As shown in  FIGS. 6-7 , the connector  92  is of a cylinder in its entirety, and includes a connector sleeve  921 . One end, which is connected with the atomizer  91 , of the connector sleeve  921  is provided with a second connection mechanism  6  connected to the first connection mechanism  5 . The second connection mechanism  6  includes a second base body  61  using as a first electrode of the second connection mechanism, a second post component  62  disposed in the second base body  61 , and a permanent magnet  922 . The second post component  62  is inserted into the second base body  61  and holds the permanent magnet  922  into the second base body  61 . 
         [0040]    The second base body  61  is of a hollow cylinder. One end of the second base body  61  is inserted and secured in the connector sleeve  921 , while the other end thereof is provided with an externally threaded connector for connecting with the power source stem  95 . The second post component  62  includes a second insulation sleeve  621 , a second post  622  and a power source stem upper post  623  both of which are disposed at two ends of the second insulation sleeve  621  and which are always extended out of the second insulation sleeve  621 , a spring  624  disposed in the second insulation sleeve  621  and two ends of which are connected respectively with the second post  622  and power source stem upper post  623  in order that the posts  622  and  623  are always extended out of the second insulation sleeve  621 . The power source stem upper post  623  is positioned at one end of the second insulation sleeve  621  by a locating sleeve  625 . Each of the second post  622  and power source stem upper post  623  has an axially extended through hole defined in their middle portions and said through hole is used as the second electrode of the second connection mechanism. The second insulation sleeve  621 , second post  622 , power source stem upper post  623 , spring  624  and locating sleeve  625  form together the second post component  62  to ensure that the connector  92  will be reliably connected to the atomizer  91  and power source stem  95 . 
         [0041]    The second insulation sleeve  621  is of substantially a cup shape, made from insulation material, and includes a side wall, a top wall, and a cavity defined together by the side wall and top wall for receiving the spring  624 . One end of the second insulation sleeve  621  opposing to the top wall is an open end. A second post hole (not labeled) is provided on the top wall such that the second post  622  will be extended out. A rim (not labeled) is radially outwardly extended from the top wall. The second insulation sleeve  621  passes across the permanent magnet and is inserted into the second base body  61  and is pressed against the second base body by its outer wall. At the same time, the permanent magnet  922  is held on the second base body  61  by the rim. 
         [0042]    The locating sleeve  625  is of substantially a cylindrical shape, and a through hole (not labeled) is defined in its middle portion. A locating rim is radially outwardly extended from the side wall of its end portion. The locating sleeve  625  is inserted into the second insulation sleeve  621  and is pressed against the second insulation sleeve  621  by its side wall, and is held in place by the locating rim. The through hole is intended for extending of the power source stem upper post  623  out of the locating sleeve, i.e., out of the second insulation sleeve  621 . 
         [0043]    The permanent magnet  922  has cylindrical construction. A through hole (not labeled) is defined in the permanent magnet  922  through which the second insulation sleeve  621  passes. The permanent magnet  922  is secured on the second connection mechanism  6 . 
         [0044]    The first base body  51  entirely or partially forms a first magnetic portion. In present embodiment, the first base body  51  is entirely used as the first magnetic portion. The second base body  61  entirely or partially forms a second magnetic portion which may be magnetically absorbed to the first magnetic portion. To realize better positioning and fixation when the second base body  61  of the connector is connected to the first base body  51  of the atomizer, the first base body  51  may be made from conductive magnet or magnetic material. The magnetic material may be iron such that the first base body  51  constitutes the first magnetic portion. Alternatively, an independent structural component constructed of conductive magnet or magnetic material may be provided on the first base body  51  to form of the first magnetic portion. Or, part of the first magnetic portion may be made of conductive material. Correspondingly, the second base body  61  may also be made from conductive magnet or magnetic material such that the second base body  61  in its entirety forms the second magnetic portion which is magnetically absorbed to the first magnetic portion of the first base body  51 . Alternatively, an independent structural component made of conductive magnet or magnetic material may be disposed on the second base body  61  to constitute the second magnetic portion. Or, part of the second magnetic portion may be made of conductive material. In present embodiment, the permanent magnet  922  independently designed and made of magnet or magnetic material is used as the second magnetic portion. As a result, correspondence between the first magnetic portion and second magnetic portion may be that between the magnet and magnet or magnet and magnetic material or magnetic material and magnet. 
         [0045]    As shown in  FIG. 3 , when the first connection mechanism  5  of the atomizer  91  is inserted into the connector casing  921  of the connector  92  at a proper location, one end of the first base body  51  is pressed against or close to the permanent magnet  922  of the second connection mechanism  6 . Due to magnetic force of the permanent magnet  922 , the first base body  51  is firmly absorbed by the permanent magnet  922  and is unable to separate easily from the connector  91 . As the second post  922  of the second connection mechanism  6  is pushed by the end surface of the first post  52  of the first connection mechanism  5 , the second post  622  will counteract the resiliency of the spring  624  such that it will be slightly contracted and be tightly pressed against the first post  52  under forces of the spring  624 , thus ensuring that the first post  52  will better contact the second post  622 . In addition, the side-wall of the first base body  51  contacts circumferentially the inner wall of the connector casing  921  to realize electrical conduction. Therefore, the electrical circuit of the atomizer  91  will be correspondingly connected to the internal electrical circuit of the connector  92 . 
         [0046]    As shown in  FIG. 8 , the power source stem  95  is substantially of a cylindrical shape. One end, which is connected to the connector  92 , of the power source stem  95  is provided with an internally threaded connector  951 . A power source stem lower post  952  is disposed in the internally threaded connector  951  and is connected to the power source stem upper post  623  for conducting electric circuit. The power source stem lower post  952  is held in the internally threaded connector  951  by an insulation sleeve  953 . A venting hole is defined in the middle portion of the power source stem lower post  952 . The internally threaded connector  951  and the power source stem lower post  952  operate as the first and second electrodes of the power source stem  95  respectively. The power source stem  95  contains battery  955  and the like. The first and second electrodes of the battery  955  are electrically connected to the internally threaded connector  951  and a power source stem lower post  952  respectively. Another end of the power source stem  95  is provided with a closure  956  on which an indicator light and an intake hole are disposed (not labeled). 
         [0047]    In addition, as shown in  FIG. 3 , external air comes into the power source stem  95  through the intake hole of the closure  956  on the bottom of the power source stem and then comes into the second insulation sleeve  621  through the venting holes of the power source stem lower post  952  and power source stem upper post  623  respectively. Next, external air comes into the atomizer  91  across the venting holes of the second post  622  and first post  52  respectively. After that, it comes across the venting hole of the atomization base  213  and venting hole of the absorption sleeve  1  and finally comes out of the absorption stem  90  from the venting hole of the nozzle case  4 , thus unique air path being formed inside of the electronic cigarette and gas flowing smoothly between the electronic cigarette and external environment. Of course, external air may also come into the atomizer  91  directly from the venting hole of the nozzle case  4 . 
         [0048]    Though various embodiments of the invention have been illustrated above, a person of ordinary skill in the art will understand that, variations and improvements made upon the illustrative embodiments fall within the scope of the invention, and the scope of the invention is only limited by the accompanying claims and their equivalents.