Patent Publication Number: US-2017367404-A1

Title: Rotary switch electronic cigarette

Description:
TECHNICAL FIELD 
     The present invention relates to the technical field of electronic cigarette, and more specifically, to a rotary switch electronic cigarette. 
     BACKGROUND 
     Since the 18th century, tobacco was introduced to China. Tobacco has a history of more than 300 years. As the time passed by, all kinds of smoking tools emerged endlessly, each of which has its own function. Take the electronic cigarette market as an example, the traditional electronic cigarette nozzle usually exposes to the outside. Not only the smoking nozzle is vulnerable to pollution and thus unhygienic, but also the overall length of the electronic cigarette is increased. It is not convenient to carry. Meanwhile, in terms of smoking control, performing the control of smoking with a small push or push-pull switch manner, it is very difficult and inconvenient to use. Also, it lacks an apparent smoke observation window and a working indicator light, resulting in an unsatisfied smoking experience. At the same time, in terms of PCBA control, it lacks a variety of effective protection circuit to protect the long-term use of the heating element and rechargeable batteries, and therefore it is likely to be burned. 
     SUMMARY 
     In order to overcome the above drawbacks of the prior art, an object of the present invention is to provide a rotary switch electronic cigarette with aesthetical appearance, overall compact design, which is clean and hygiene, convenient to carry, and easy to use and observe, wherein the tobacco shred and ash are not likely to leak. 
     The technical solution used by the present invention to solve the technical problem is: 
     A rotary switch electronic cigarette includes a cylindrical electronic cigarette body, wherein: the electronic cigarette body from top to bottom is divided into a retractable smoking nozzle portion, an electric heating portion, and a rotary switch controlling portion. The retractable smoking nozzle portion snaps on the electrically retractable smoking nozzle portion, and snaps on an upper end of the rotary switch controlling portion. The electric heating portion is connected to an upper end of the rotary switch controlling portion in a screw thread manner. 
     As a further improvement of the present invention, the retractable smoking nozzle portion includes a vertically retractable smoking nozzle, a lid decorative tube, and a glass tube, the smoking nozzle being clamped on an inlet of an upper end of the lid decorative tube, the glass tube engaging within the lid decorative tube, a lower end of the lid decorative tube engaging the electric heating portion, and snapping on an upper end of rotary switch controlling portion, the lid decorative tube including a hollow leaf-shape observation window on a surface of a periphery. 
     As a further improvement of the present invention, the electric heating portion includes a heating element, a ceramic base cup, a replacement core threaded tube base, and a ceramic protective sleeve, the heating element being fixed to the bottom of a heating cavity of the ceramic base cup, the ceramic base cup snapping inside the ceramic protective sleeve, the ceramic protective sleeve snapping on an upper end of the replacement core threaded tube base, an upper end of the ceramic protective cover also being provided with an air permeable and leaking proof lid, an lower end of the replacement core threaded tube base is a threaded tube, the replacement core threaded tube base being fastened inside an upper end of the rotary switch controlling portion through the threaded tube at the lower end, an upper electrode contact core pole being clamped inside the threaded tube, the upper electrode contact core pole being connected to the heating element by a lead. 
     As a further improvement of the present invention, the rotary switch controlling portion includes a rotary switch assembly, a battery sleeve, a rechargeable battery, a PCBA control panel, and a battery base. The rotary switch assembly is mounted above the battery sleeve. The rechargeable battery is fixed to a middle portion of the battery sleeve. The battery base engages a bottom of the battery sleeve. An upper portion of the battery base is provided with a circle translucent region. The PCBA control panel is provided with a green indicator light, and is fixed on battery base. The PCBA control board is connected to the rotary switch assembly and the rechargeable battery via a lead. The bottom of the battery base is also provided with a charging port. An upper end of the rotary switch assembly is connected to the lower end of the lid decorative tube in a snap-fit manner. 
     As a further improvement of the present invention, the rotary switch assembly includes a lid rotating snap ring, a rotating base, a battery rotating base, a rotating clamp base, and a rotary switch. The lid rotating snap ring snaps on an upper end of the rotating base. The rotating base is clamped on the battery rotating base. The battery rotating base is fixed on an upper portion of the battery sleeve. An upper end of the battery rotating base is connected to the threaded tube of the replacement core threaded tube base through an inner thread. A central portion of the rotating base also is clamped with a lower electrode contact core pole. The lower electrode contact core pole is clamped on a central portion of the rotating base by a lower insulating sleeve. A lower end of the rotating base clamps the rotating clamp base, rotating clamp base turning the rotary switch by a lower paddle. A middle portion of the rotating clamp base is provided with a rotation limit clamp slot. The rotary switch is connected to the PCBA control panel through a lead. 
     As a further improvement of the present invention, the PCBA control panel is provided with a time-out protection circuit, a low-voltage protection circuit, a short circuit protection, and an overload protection circuit. 
     Compared with the prior art, the beneficial effects of the present invention lie in: 
     1. The present invention generally uses a pillared design simulating the cigarette shape. Moreover, a hollow type observation window in a shape of the green leaf is provided. The appearance is aesthetical. Meanwhile, in conjunction with a retractable smoking nozzle, the overall size of the electronic cigarette is more compact than the ordinary product, and thus it is easy to carry. 
     2. The present invention uses a rotary switch manner to enable or disable the smoking. Compared with the normal opening or closing manner by pressing or sliding a switch, it is easier and more convenient. With the cover decorative tube engaging on a rotary switch assembly, manually rotating the switch assembly will open or close the PCBA control panel. Meanwhile, in conjunction with a green-leaf-shaped observation window, the inside smoke can be seen clearly when opening. Also, through the transparent region on an upper portion of the base of the battery, changes of the green indicator light can be observed, so as to now the using status of the electronic cigarette. Therefore, it is very easy to use and observe. 
     3. A retractable smoking nozzle structure is used. When it is not in use, the nozzle can indent into the tube, so as to avoid dirty the smoking nozzle. When it is in use, the nozzle is pulled out. Thus, it is very clean and hygiene, and easy to carry. 
     4. In the upper portion of the inner cavity where the tobacco burns, that is, the upper end of a ceramic protective sleeve, an air permeable and leaking proof lid is provided. It can prevent the leakage or the sucking out of the tobacco shred or ash from the smoking nozzle, such that a using angle of smoking is unconstrained. 
     5. The PCBA control panel of the present invention has a variety of protection circuits, such that the heating element and a rechargeable power supply can be effectively protected, so that the electronic cigarette is more durable. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of the structure of the present invention; 
         FIG. 2  is a cross-sectional schematic view of the structure of the invention; 
         FIG. 3  is a schematic view of the overall assembly of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, the invention is further described in conjunction with Figures and examples: 
     With reference to  FIGS. 1 to 3 , a rotary switch electronic cigarette includes a cylindrical electronic cigarette body, wherein the electronic cigarette body from top to bottom is divided into retractable smoking nozzle portion  1 , electric heating portion  2 , and rotary switch controlling portion  3 . Retractable smoking nozzle portion  1  covers and snaps on electric heating portion  2 , and snaps on an upper end of rotary switch controlling portion  3 . Electric heating portion  2  is connected to an upper end of rotary switch controlling portion  3  in a screw thread manner. 
     Retractable smoking nozzle portion  1  includes a vertically retractable smoking nozzle  11 , lid decorative tube  12  and glass tube  13 . Smoking nozzle  11  is clamped at the inlet of the upper end of the lid decorative tube  12 . Glass tube  13  engages within the lid decorative tube  12 . The lower end of lid decorative tube  12  engages electric heating portion  2 , and snaps on the upper end of rotary switch controlling portion  3 . Lid decorative tube  12  has hollow leaf-shape observation window  121  on the surface of the periphery. 
     Electric heating portion  2  includes heating element  21 , ceramic base cup  22 , replacement core threaded tube base  23 , and ceramic protective sleeve  24 . Heating element  21  is fixed to the bottom of the heating cavity of ceramic base cup  22 . Ceramic base cup  22  snaps inside ceramic protective sleeve  24 . Ceramic protective sleeve  24  snaps on the upper end of replacement core threaded tube base. The upper end of ceramic protective cover  24  is also provided with air permeable and leaking proof lid  25 . The lower end of replacement core threaded tube base  23  is a threaded tube. Replacement core threaded tube base  23  is fastened inside the upper end of rotary switch controlling portion  3  through the threaded tube at its lower end upper electrode contact core pole  26  is clamped inside the threaded tube. Upper electrode contact core pole  26  is connected to heating element  21  by a lead. 
     Rotary switch controlling portion  3  includes a rotary switch assembly  4 , battery sleeve  31 , rechargeable battery  32 , PCBA control panel  33 , and battery base  34 . Rotary switch assembly  4  is mounted above battery sleeve  31 . Rechargeable battery  32  is fixed to the middle of battery sleeve  31 . Battery base  34  covers and engages the bottom of battery sleeve  3 . The upper portion of battery base  34  is provided with circular translucent region  341 . PCBA control panel  33  is provided with a ween indicator light, and is fixed on battery base  34 . PCBA control board  33  is connected to rotary switch assembly  4  and rechargeable battery  32  via the lead. The bottom of battery base  34  is also provided with the charging port. The upper end of rotary switch assembly  4  is connected to the lower end of lid decorative tube  12  in a snap-fit manner. 
     Rotary switch assembly  4  includes lid rotating snap ring  41 , rotating base  42 , battery rotating base  43 , rotating; damp base  44 , and rotary switch  45 , lid rotating snap ring  41  snaps on the upper end of rotating base  42 . Rotating base  42  is clamped on battery rotating base  43 . Battery rotating base  43  is fixed on the upper portion of battery sleeve  31 . The upper end of the battery rotating base  42  is connected to the threaded tube of replacement core threaded tube base  23  through the inner thread. The central portion of rotating base  42  is also clamped with lower electrode contact core pole  46 . Lower electrode contact core pole  46  is clamped on the central portion of rotating base  42  by lower insulating sleeve. The lower end of rotating base  42  clamps rotating clamp base  44 . Rotating clamp base  44  turns the rotary switch  45  by a lower paddle. The middle portion of rotating clamp base  45  is provided with rotation limit clamp slot. Rotary switch  45  is connected to PCBA control panel  33  through the lead. 
     PCBA control panel  33  is provided with a time-out protection circuit, a low-voltage protection circuit, a short circuit protection, and an overload protection circuit. 
     Detailed implementation: 
     Adding tobacco shred: when it is in use, from the controlling portion of the rotary switch, the retractable smoking nozzle portion is pulled out, while the smoking nozzle is also pulled out. Meanwhile, the tobacco shred is put into the heating cavity of the ceramic base cup. After the tobacco shred is put in, the retractable smoking nozzle portion is clamped on the upper end of the controlling portion of the rotary switch again. 
     Turning on the switch: the lid decorative tube is turned 90 degrees clockwise. With the rotation of the lid decorative tube, the rotary switch of the rotary switch assembly is driven to rotate to enable the operation of the PCBA control panel. The heating element starts working to generate heat. Now, through the translucent region of the upper portion of the base battery, the green indicator light can be observed as shining. The smoke can also be seen through the window of the lid decorative tube, showing that the electronic cigarette is in a working status which can be smoked. 
     Timeout protection: after the PCBA control panel has continuously worked for 30 seconds, the timeout protection circuit controls the PCBA control panel to stop the output. The green indicator light flashes five times to indicate this. 
     Short circuit protection and overload protection: when the PCBA control panel detects that the load is short-circuited or less than 0.5Ω, through short circuit protection circuit or overload protection circuit controls the PCBA control panel to stop the output. The green indicator light flashes three times to indicate this. 
     Low voltage protection: when the PCBA control panel detects that the rechargeable battery voltage is lower than 3.4V using the low voltage detecting circuit, it controls the PCBA control panel to stop the output. Meanwhile, the green indicator light flashes eight times to indicate this. 
     Turning off the switch: the lid decorative tube is turned 90 degrees counter-clockwise by rotating the lid decorative tube, and the rotary switch of the rotary switch assembly is driven to rotate to disable the operation of the PCBA control panel. The heating element stops generating heat. The green light goes out. 
     In summary, after reading the present invention documents, according to the technical solution and the technical idea of the present invention, a variety of other alternative solutions made by one of ordinary skill in the art without creative efforts, are within the scope of the present invention.