Patent Publication Number: US-9888720-B2

Title: Cartridge for electronic cigarette

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of PCT application No. PCT/CN2014/078991, filed on May 30, 2014, which is incorporated herein by reference. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to products for smokers, and more particularly to a cartridge for an electronic cigarette. 
     2. Description of Related Art 
     An 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 a conventional cigarette, while it does not contain tar, suspended particles and other harmful ingredients. 
     An electronic cigarette in a related art usually includes a housing, a suction nozzle portion with a smoking hole mounted to a top end of the housing, a cartridge which is used for storing liquid solution is connected to the suction nozzle portion, and a heating base is connected to the cartridge. A heating unit inside the heating base generally includes fiber rope and nickel chrome wire. The fiber rope is used to absorb the liquid solution from a chamber of the cartridge and thus the liquid solution atomizes under the heating of the nickel chrome wire. For the traditional refillable electronic cigarette, when the liquid solution is used up, there are two ways to refill the liquid solution: one is taken down the heating base to refill the liquid solution, which is able to be repeatedly multiple times; and the other is taken down the suction nozzle portion to refill the liquid solution, which can also be repeatedly multiple times. 
     The above-mentioned refillable electronic cigarette needs to allocate liquid solution separately. However, the liquid solution is easily contaminated by bacterial if stored or placed improperly. Furthermore, refilling liquid solution into the cartridge and thus reusing the cartridge, an interior of cartridge is easy to be contaminated when the cartridge is open and refill liquid solution. Long-term storage of the liquid solution may easily breed bacteria or cause deterioration for overdue. 
     SUMMARY 
     Therefore, an improved cartridge is needed. 
     A cartridge for an electronic cigarette comprising: 
     a cartridge body defining a smoke channel for smoke flowing therethrough and a reservoir chamber surrounding the smoke channel for storing liquid solution, the reservoir chamber comprising an opening which communicates the interior of the reservoir chamber with the exterior of the reservoir chamber; and 
     a sealing member secured to the cartridge body, the sealing member comprising a first sealing portion for sealing the opening. 
     A cartridge for an electronic cigarette comprising: 
     a cartridge body defining a reservoir chamber for storing liquid solution, the reservoir chamber comprising an opening which communicates the interior of the reservoir chamber with the exterior of the reservoir chamber; and 
     an resilient cover comprising a fixing part and a moving part, the fixing part being fixed on the cartridge body and the moving part covering the opening resiliently. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       One or more aspects of the present invention are particularly pointed out and distinctly claimed as examples in the claims at the conclusion of the specification. The foregoing and other objects, features, and advantages of the invention are apparent from the following detailed description taken. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. 
         FIG. 1  is a perspective view of an electronic cigarette according to an embodiment of the present invention; 
         FIG. 2  is an exploded view of the electronic cigarette of  FIG. 1 ; 
         FIG. 3  is an exploded view of an atomizer assembly of the electronic cigarette shown in  FIG. 2 ; 
         FIG. 4  is an axial cross sectional view of the atomizer assembly shown in  FIG. 2 ; 
         FIG. 5  is an axial cross sectional view of an atomizer of the atomizer assembly shown in  FIG. 3 ; 
         FIG. 6  is an exploded view of the atomizer shown in  FIG. 5 ; 
         FIG. 7  is a cross sectional view of the atomizer shown in  FIG. 5 ; 
         FIG. 8  is a perspective view of a cartridge of the atomizer assembly shown in  FIG. 3 , the cartridge being sealed; 
         FIG. 9  is an axial cross sectional view of the cartridge shown in  FIG. 8 ; 
         FIG. 10  is an exploded view of the cartridge shown in  FIG. 8 ; 
     
    
    
     DETAILED DESCRIPTION 
     Illustrative embodiments of the disclosure are below. The following explanation provides specific details for a thorough understanding of the objects, features, and advantages of the invention and enabling description for these embodiments. One skilled in the art will understand that the disclosure may be practiced without such details. In other instances, well-known structures and functions have not been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments. 
     Unless the context clearly requires otherwise, throughout the description and the claims, when a part is described as “fixed on” another part, it may be installed directly on another part or to be a centered part. When a part is described as “connect” or “connecting” to another part, it may be connected directly to another part or to be a centered part. Additionally, the words “herein,” “above,” “below” and words of similar import, when used in this application, shall only be for explanatory purposes. When the claims use the word “or” in reference to a list of two or more items, that word covers all of the following interpretations of the word: any of the items in the list, all of the items in the list and any combination of the items in the list. 
       FIGS. 1 and 2  illustrate an electronic cigarette  1  according to an embodiment of the present invention. The electronic cigarette  1  may include a power supply assembly and an atomizer assembly detachably mounted to the power supply assembly. The power supply assembly, in some embodiments, may include a battery device  10  and is used for supplying power for the atomizer assembly. The atomizer assembly, in some embodiments, may include an atomizer  20  detachably mounted to an end of the battery device  10 , a fixing member  30  fixedly mounted to the base  21  of the atomizer  20 , and a cartridge  40  detachably mounted to the fixing member  30  and engaged with the atomizer  20 . The cartridge  40  is used for storing liquid solution and the atomizer  20  is used for atomizing the liquid solution. The fixing member  30  is used for detachably and rotatably connecting the cartridge  40  with atomizer  20 . 
     Referring to  FIG. 2  again, the battery device  10  in some embodiments may be cylindrical, and may include a thread plugging slot  11  defined at one end thereof, an air intake  12  defined on an edge of the one end, and a switch  13  installed on the side wall. The thread plugging slot  11  may be used for a screw joint between the atomizer  20  and the battery device  10 , whereby enabling the atomizer  20  and the battery device  10  connected to each other mechanically and electrically. The air intake  12  is used for enabling outside air being sucked into the battery device  10  and then through the battery device  10  to the atomizer  20 . 
     Referring to  FIGS. 3 and 4 , the atomizer  20 , in some embodiments, may include a base  21  for engaging the thread plugging slot  11  of the battery device  10 , and a cylindrical insulator  22 , a cylindrical electric conductor  23 , an atomizing device  24 , a smoke outlet tube  25 , a piercing device  26 , a first elastic sealing member  27  and a second elastic sealing member  28  mounted to the base  21 . 
     Referring to  FIGS. 5-7 , the base  21  may be made of electrically conductive materials such as copper or aluminum as one-piece, and may be used for electrically connecting the heating coil  243  of the atomizing device  24  with the battery device  10 . The base  21  includes an annular bottom wall  210 , an air flowing pipe  212  which stands on the middle of a top surface of the annular bottom wall  210 , a cylindrical wall  214  which stands on a periphery edge of the top surface of the annular bottom wall  210 , and a screw joint  216  connected to a middle of a lower surface of the annular bottom wall  210 . The cylindrical wall  214 , the annular bottom wall  210  and the air flowing pipe  212  cooperatively define an annular accommodating space  218 . The screw joint  216  matches with the thread plugging slot  11  of the battery device  10 . The center through-hole of the annular bottom wall  210  is connected to the center through-holes of the air flowing pipe  212  and the screw joint  216 , respectively. As shown in  FIG. 6 , a free end of the air flowing pipe  212  has a receiving slot  2120  concaved towards the annular bottom wall  210 , for receiving the atomizing device  24 . The air flowing pipe  212  defines an air flowing channel for air flowing therethrough. 
     The cylindrical insulator  22  in some embodiments may be T-shaped, and may include a flat cylindrical head portion  221  and a cylindrical rod portion  223  connected to the head portion  221 . The cylindrical rod portion  223  is embedded inside the center through-hole of the screw joint  216 . The head portion  221  abuts against a step of the through-hole of the screw joint  216 . 
     The cylindrical electric conductor  23 , in some embodiments, may be used to electrically interconnect the atomizing device  24  and a pole of the battery device  10 . The cylindrical electric conductor  21  may be T-shaped, and includes a flat cylindrical head portion  231  and a cylindrical rod portion  233 . The head  231  defines a horizontal first hole  2310 . The cylindrical rod portion  233  defines a vertical second hole  2330 . The first hole  2310  and the second hole  2330  communicate with each other. The cylindrical rod portion  233  is embedded inside the center through-hole of the cylindrical insulator  22 . The head  231  abuts against the lower end surface of the head portion  221  of the cylindrical insulator  22 , enabling the air to flow through the first hole  2310  to the second hole  2330  then into the center through-hole of the air flowing pipe  212 . 
     The atomizing device  24 , in some embodiments, may be laterally placed in the receiving slot  2120  of the air flowing pipe  212 . The atomizing device  24  may include a first liquid suction member  241 , a heating coil  243  wound around a portion of the first liquid suction member  241  which is located in the air flowing channel of the air flowing pipe  212 , and two second liquid suction members  245  disposed side by side upon the first liquid suction member  241 . The first liquid suction member  241  and the second liquid suction members  245  may be made of materials with good capillary force, such as fiberglass or natural fiber. The cross-section of the first liquid suction member  241  may be larger in size than that of the second liquid suction member  245 . It should be understood that in some embodiments the heating coil  243  may be replaced by other heating unit such as heating sheets. Besides, the second liquid suction member  245  is optional and is able to be omitted. 
     The smoke outlet tube  25  in some embodiments defines a smoke exhaust channel communicating with the air flow channel, and may include an annular baseplate  251 , an embedding portion  253  extending from a bottom surface of the annular baseplate  251 , and a cylindrical piercing portion  255  extending from a top surface of the annular baseplate  251 . The external diameter of the annular baseplate  251  is greater than the diameter of the opening at the upper end of the air flowing pipe  212 . The external diameter of the embedding portion  253  matches with the opening at the upper end of the air flowing pipe  212 , thus the embedding portion  253  of the smoke outlet tube  25  is able to be inserted into the outlet of the air flowing pipe  212  and the annular baseplate  251  abuts against an end face of the upper end of the air flowing pipe  212 . The cylindrical piercing portion  255  is used for piercing through the second sealing portion  442  of the sealing member  44  of the cartridge  40  into the smoke channel  42  of the cartridge  40 . Therefore, smoke generated by the atomizing device  24  is able to be guided to flow into the smoke channel  42 . For piercing through the second sealing portion  442  of the sealing member  44  more easily, the top of the piercing portion  255  may be wedge-shaped. 
     The piercing device  26  in some embodiments may include a tubular body  261  surrounding the reservoir room  219  and a pair of piercing members  263  disposed respectively on two opposite positions of the edge of a top end of the tubular body  261 . The external diameter of the tubular body  261  matches with the inner diameter of the cylindrical wall  214 , whereby enabling the tubular body  261  tightly embedded in the annular accommodating space  218 . When the tubular body  261  is embedded into the annular accommodating space  218 , the tubular body  261  together with the annular bottom wall  210  and the air flowing pipe  212  of the base  21  defines a reservoir room  219  surrounding the air flowing pipe  212 . The two ends of the first liquid suction member  241  and the second liquid suction member  245  of the atomizing device  24  extend respectively into the reservoir room  219  to suck the liquid solution from the reservoir room  219  to a middle portion where the liquid solution is atomized under the heating of the heating coil  243 . It is noteworthy that in some embodiments only one end of the first liquid suction member  241  and the second liquid suction member  245  extend into the reservoir room  219 . 
     The pair of piercing members  263  is used for piercing through the first sealing portion  441  of the sealing member  44  of the cartridge  40 , whereby enabling the reservoir chamber  43  of the cartridge  40  and the reservoir room  219  communicating with each other so that the liquid solution in the reservoir chamber  43  may flow into the reservoir room  219 . Each piercing member  263  includes an internal surface  2630  facing the central axis of the tubular body  261  and an external surface  2632  which is opposite to the internal surface  2630 . The internal surface  2630  and the external surface  2632  intersect on the top end with an acute angle, makes the piercing members  263  be wedge-shaped in profile. Preferably, the internal surface  2630  inclines towards the axis while the external surface  2632  inclines conversely, whereby enabling the whole piercing members  263  to be on the reservoir room  219 . The piercing device  26  is for better installation of the first elastic sealing member  27  and the piercing members  263  whereby reducing the difficulty of molding the base  21 . It is noteworthy that in some embodiments, the piercing device  26  and the base  21  are integrally formed as one-piece. 
     The first elastic sealing member  27  in some embodiments may be cylindrical. The first elastic sealing member  27  encircles the piercing device  26  tightly and lets the piercing members  263  exposed. The lower end of the first elastic sealing member  27  abuts against the cylindrical wall  214 , and the upper end thereof is used to abut against the end portion of the tube  4122  of the cartridge  40 , i.e., the first elastic sealing member  27  fits between the reservoir chamber  43  and the reservoir room  219  to improve sealing effect of the tube  4122  and provide an elastic force to the tube  4122  along a direction away from the atomizing device  24 . The first elastic sealing member  27  may include a corrugated outside wall  270  for improving the sealing capability with the inner wall of the fixing member  30  under the pressure from the atomizing device  24 . 
     The second elastic sealing member  28  in some embodiments may also be cylindrical. The second elastic sealing member  28  encircles the piercing portion  255  of the smoke outlet tube  25  tightly and lets the top of the piercing portion  255  exposed. The second elastic sealing member  28  is used to abut against the free end of the tube  4122  of the cartridge  40 . In other words, it is disposed between the internal perimeter of the reservoir chamber  43  and the internal perimeter of the reservoir room  219  to improve the sealing capability between the tube  4122  and the smoke outlet tube  25 , whereby preventing the liquid solution in the reservoir room  219  from leaking into the smoke channel  42 . 
     Referring to  FIG. 3  again, the fixing member  30  in some embodiments may be made of transparent material such that the inside of the cartridge  40  may be observed. Therefore, the user can find if the liquid solution is used up. It should be noted that in some embodiments, only a portion of the fixing member  30  is transparent. The fixing member  30  may be cylindrical with its lower end coupled to the cylindrical wall  214  of the base  21 . The internal of the fixing member  30  defines symmetrically a pair of positioning slots  31  for engaging with the latching protrusions  4120  of the cartridge  40 . As shown in  FIG. 3 , each positioning slot  31  include a rotation section  310  extending along a circumferential direction of the fixing member  30 . The rotation section  310  is adapted to slidably engage with the latching protrusions  4120  of the cartridge  40 , enabling the cartridge  40  being capable of rotating relative to the fixing member  30  along an axis of the atomizer assembly. One end of the rotation section  310  is connected to a guiding section  312  extending along an axis of the fixing member  30 . The guiding section  312  extends from the one end of the rotation section  310  to the upper end of the fixing member  30 . The other end of the positioning slots  31  is concaved towards the upper end of the fixing member  30  to define a limiting section  314 . The limiting section  314  is used for preventing the latching protrusions  228  from returning to rotation  414  enabling the cartridge  40  being positioned in the fixing member  30 . It is noteworthy that in some embodiments, the fixing member  30  and the base  21  is able to be integrally formed as one-piece. 
     Referring to  FIGS. 8-10 , the cartridge  40  in some embodiments may include a cartridge body  41  with a smoke channel  42  for smoke flowing therethrough and the reservoir chamber  43  surrounding the smoke channel  42  defined therein. The reservoir chamber  43  in some embodiments is used for storing liquid solution, and may include an opening  430  which communicates the interior of the reservoir chamber  43  with the exterior of the reservoir chamber  43 . Preferably, the smoke channel  42  extends through the cartridge body  41  along a longitudinal direction. The opening  430  and the inlet of the smoke channel  42  may be coplanar. The opening  430  may be substantially annular-shaped, and the inlet may be substantially circular-shaped. 
     The cartridge body  41  in some embodiments may be made of transparent material so that the liquid solution in the reservoir chamber  43  may be observed in real time. The cartridge body  41  includes a suction nozzle portion  410 , an embedding portion  412 , and a transition portion  414  connecting the suction nozzle portion  410  with the embedding portion  412 . The smoke channel  42  extends through the suction nozzle portion  410 , the transition portion  414  and the embedding portion  412  in sequence. The diameter of a portion of the smoke channel  42  within the suction nozzle portion  410  may increase gradually along a direction towards the free end of the suction nozzle portion  410 , enabling the speed of the smoke to the smoker&#39;s mouth decreases, thereby improving the smoking experience. The suction nozzle portion  410  and the embedding portion  412  in some embodiments may substantially be cylindrical. The size of the suction nozzle portion  410  should be comfortable for smokers. The diameter of the embedding portion  412  is greater than that of the suction nozzle portion  410 , but fits the inner diameter of the fixing member  30 , whereby enabling the embedding portion  412  to be embedded in the fixing member  30 . The transition portion  414  has a shape of truncated cone, with a plurality of anti-slip protrusions formed on the outer surface thereof and spaced from each other, facilitating the smokers to rotate the cartridge  40 . In some embodiments, a pair of latching protrusions  4120  is respectively formed on two opposite sides of the outer surface of the embedding portion  412 , and is adjacent to the transition portion  414 . The pair of latching protrusions  4120  is engaged with the positioning slots  31 , respectively. In detail, in some embodiments, the latching protrusion  228  may be substantially rectangular. 
     The embedding portion  412 , in some embodiments, may further include a tube  4122 . The tube  4122  is used for separating the reservoir chamber  43  from the smoke channel  42 . The opening  430  is defined on the surface of the free end of the embedding portion  412 . 
     Referring to  FIG. 10 , the cartridge  40  in some embodiments further includes a sealing member  44 . The sealing member  44  in some embodiments is generally a circular sheet which includes a substantially annular-shaped first sealing portion  441  for sealing the opening  430  of the reservoir chamber  43 , and a substantially circular-shaped second sealing portion  442  for sealing the inlet of the smoke channel  42 . The sealing member  44  may be made from materials with certain rigidity but easy to be pierced through. Thus, in one aspect, the liquid solution before usage is able to be held within the reservoir chamber  43  by the sealing member  44  and be prevented from leaking easily. In another aspect, a sharp object can be pierced through the sealing member  44  easily to make the liquid solution flow out from the reservoir chamber  43  and then flow to the atomizer  20 . In some embodiments, the sealing member  44  may be made of silver paper. In other embodiments, the sealing member  44  may be made of other sheet-like materials like plastic paper. It should be understood that the second sealing portion  442  is optional. 
     The cartridge  40  in some embodiments may further include an resilient cover  45  which is mounted to the cartridge body  41 . The resilient cover  45  may be located within the reservoir chamber  43  and be adjacent to the opening  430 . The resilient cover  45  covers the opening  430  resiliently, such that when the sealing member  44  is pierced through and the piercing members  263  are removed, the opening  430  will be covered. The resilient cover  45  in some embodiments may be annular and sheet-shaped, and may be made from soft, elastic material like silica gel. The external diameter of the resilient cover  45  may be equal to or slightly smaller than the external diameter of the reservoir chamber  43 . The inner periphery of the resilient cover  45  is fixed on the free end of the tube  4122  to form a fixing part of the resilient cover  45 . The outer periphery of the resilient cover  45  extends laterally from the tube  4122  to or adjacent to the inner wall of the reservoir chamber  43  to form a moving part of the resilient cover  45 . The outer periphery of the resilient cover  45  can overturn with respect to the inner periphery, whereby enabling the opening  430  of the reservoir chamber  43  exploding when the outer periphery has an external force applied thereon, and enabling the resilient cover  45  returning to cover the opening  430  when the external force is moved. 
     Assembly and usage of the electronic cigarette  1  will be further illustrated as below. 
     In some embodiments, the cartridge  40  may be sold independently. In other words, the cartridge  40  is filled with liquid solution in the factory, and is sealed by the sealing member  44 . When installing the cartridge  40  onto the atomizer  20 , plug the embedding portion  412  into the fixing member  30  and ensure the pair of latching protrusions  4120  of the embedding portion  412  inserted into the guiding section  312  of the positioning slots  31  on the inner wall of the fixing member  30 . Then, the second sealing portion  442  of the sealing member  44  will come into contact with the smoke outlet tube  25 . At this time, continue to force the cartridge  40  downwards will make the smoke outlet tube  25  pierce through the second sealing portion  442  and further extending into the internal of the smoke channel  42 . Subsequently, the first sealing portion  441  of the sealing member  44  will come into contact with the top of the piercing members  263 . In this situation, continue to force the cartridge  40  downwards will make the piercing members  263  pierce through the first sealing portion  441  and drive the outer periphery of the resilient cover  45  to overturn resiliently with respect to the inner periphery, thus the liquid solution in the reservoir chamber  43  can flow out and further flow into the reservoir room  219  (referring to  FIG. 4 ). Therefore, the piercing members  263  also act as lifting members for lifting the outer periphery of the resilient cover  45 . 
     The first elastic sealing member  27  which may be made of silica gel has function of sealing, and prevents the liquid solution from leaking from gaps between the embedding portion  412  and the fixing member  30 . The end of the embedding portion  412  encounters the first elastic sealing member  27 , and an obvious resistance is generated. Continue to force the cartridge  40  downwards to overcome the elastic force applied by the first elastic sealing member  27  until the pair of latching protrusions  4120  are inserted into the bottoms of the guiding section  312 . In such a state, the cartridge  40  is able to be rotated a certain angle relatively to the fixing member  30  to make the pair of latching protrusions  4120  slide along the rotation section  310  of the positioning slots  31  into the limiting section  314 . Then stop forcing the transition portion  414 , under the elastic force of the first elastic sealing member  27 , the pair of latching protrusions  4120  may be fixedly latched within the limiting section  314  and will not easy to disengage from the limiting section  314 , thereby the cartridge  40  and the atomizer  20  are fixedly assembled. Compared with the traditional screw type twisted structure, this design can prevent the cartridge  40  from disengaging by rotating when children are playing, thereby the safety of usage of the product is enhanced. It should be noted that other types of protrusion-slot structures may be used to realize the detachable connection. It is also noteworthy that during the rotation of the cartridge  40  relative to the fixing member  30 , the piercing members  263  cuts the first sealing portion  441  along a circumferential direction and forms an elongated strip-shaped through hole in the first sealing portion  441  so that the liquid solution may flow into the reservoir room  219  smoothly. 
     In use, when the switch  13  is turned on, the heating coil  243  of the atomizing device  24  is powered and generates heat, and atomizes the liquid solution in the first liquid suction member  241  and the second liquid suction member  245 . When inhale at the suction nozzle portion  410  of the electronic cigarette  1 , the air flows into the battery device  10  via the air intake  12  and then flows through the first hole  2310  and the second hole  2330  of the cylindrical electric conductor  23  in sequence to the inside of the air flowing pipe  212  of the atomizer  20 . The airflow drives the smoke flow towards the user&#39;s mouth through the smoke outlet tube  25  and the smoke channel  42 . 
     When the liquid solution in the cartridge  40  is used up, the atomizer  20  may be reused and the cartridge  40  may be replaced, thereby the electronic cigarette  1  can be reused again. To disassemble the cartridge  40 , firstly forces the cartridge  40  downwards to overcome the elastic force of the first elastic sealing member  27 . When the pair of latching protrusions  4120  reaches the bottom of the limiting section  314 , the transition portion  414  is driven to rotating reversely relative to the fixing member  30 , whereby enabling the pair of latching protrusions  4120  moving into the guiding section  312 , thus, the cartridge  40  is able to be withdrawn from the fixing member  30  easily. When the cartridge  40  is disassembled, the piercing members  263  separate from the cartridge  40 . The resilient cover  45  will be back to an original position since the external force on the outer periphery applied by the piercing members  263  is removed, and the resilient cover  45  will cover the opening  430  of the reservoir chamber  43  of the cartridge  40  again, and prevent or significantly reduces leakage of the remaining liquid solution in reservoir chamber  43  of the cartridge  40 , and accordingly prevent or reduces significantly the contamination of the liquid solution to the users&#39; hands, the atomizer  20  and/or the fixing member  30  during disassembling the cartridge  40 . 
     The electronic cigarette  1  as described above can achieve at least the following advantages:
         1) The liquid solution is accommodated in the cartridge and sealed by the sealing member  44  in the factory, so that the problems due to stored or placed improperly is able to be avoid and the liquid solution will not be contaminated of bacterial or others.   2) The refillable cartridge is modified to be disposable cartridge  40 , the liquid solution is stored within the cartridge  40 , thus avoid the contamination from outside to ensure the cleanness.   3) The disposable cartridge  40  is totally sealed to prevent children swallowing or spreading the liquid solution on skin or in eyes.   4) The disposable cartridge  40  need not to be filled by the users, thus avoid leakage of liquid solution due to improper operation or overfill, whereby improving the user experience.   5) The structure of the atomizer assembly is simple, which can avoid leakage due to size problems, and reduce worker&#39;s burden during manufacturing procedure.   6) When disassembling the cartridge  40 , the resilient cover  45  will cover the opening of the reservoir chamber  43  of the cartridge  40 , thus avoid leakage of the remaining liquid solution in reservoir chamber  43 , whereby preventing or reducing significantly the leakage of the remaining liquid solution.   7) The atomizing device  24  includes the bigger first liquid suction member  241 , the heating coil  243  wound around the first liquid suction member  241  in the air flowing pipe  212  and two smaller second liquid suction members  245  above the first liquid suction member  241 , improving the atomization efficiency significantly and generating more smoke.   8) By adopting the designed piercing members  263 , the through hole that pierced on the first sealing portion  441  of the sealing member  44  is bigger, so that the liquid solution in the reservoir chamber  43  may flow into the reservoir room  219  more smoothly.       

     It is noteworthy that, although information as to, and advantages of, the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the present embodiments, the disclosure is illustrative only; and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the present embodiments to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.