Electronic cigarette and air switch thereof

Patent metadata

Field	Value
Publication number	US-9750282-B2
Application number	US-201414409483-A
Country	US
Kind code	B2
Filing date	Sep 12, 2014
Priority date	Sep 12, 2014
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

The present invention provides an electronic cigarette and a battery device thereof. The air switch includes a switch body and an airflow channel extending through the switch body. In present invention, because the airflow channel is disposed within the switch body of the air switch, it is better to design the size of the airflow channel which extending through the air switch, at the same time, fixing mechanism for mounting the air switch, such as pad or welding points can be arranged out of the airflow channel, to protect the air sucked into the second airflow channel from being polluted, thereby protecting the consumers' health.

First claim

What is claimed is:

1. An air switch of an electronic cigarette, comprising a switch body and an airflow channel extending through the switch body; wherein the switch body comprises an airflow sensor for sensing air passing through the airflow channel and a controlling device electrically connected to the airflow switch;
the airflow sensor comprises a negative chamber communicating with the airflow channel, a balance chamber communicating with the outside of the air switch, a first electrode plate and a second electrode plate parallel to and being spaced apart from the first electrode plate; the second electrode plate comprises a conductive film, the conductive film is arranged between the negative chamber and the balance chamber, and cooperates with the first electrode plate to form a parallel-plate capacitor to sense a difference in the pressure between the negative chamber and the balance chamber; the parallel-plate capacitor is electrically connected to the controlling device, to transmit the difference signal to the controlling device;
the switch body comprises a first air flowing pipe, a conductive case, a light emitting device, a first conductive bracket, an insulating gasket, and a second conductive bracket; the first air flowing pipe defines the airflow channel; wherein the case comprises an annular bottom wall, a cylindrical sidewall protruding from an outer edge of the bottom wall, and a top wall fixed to a top end of the cylindrical sidewall away from the bottom wall; wherein the light emitting device comprises a driving circuit board, and a light emitting member fixed to a bottom surface of the driving circuit board; the driving circuit board defines a first central hole for allowing the second air flowing pipe extending through, and a plurality of first apertures arranged at a side of the first central hole; the driving circuit board is mounted on a top surface of the bottom wall and is electrically connected to the bottom wall; wherein the first conductive bracket is arranged on the top surface of the driving circuit board and is electrically connected to the driving circuit board; the first electrode plate is electrically connected to a top end of the first conductive bracket, the first electrode plate defines a second central hole for allowing the air flowing pipe extending through, and a plurality of second apertures; the second aperture are arranged surrounding the second central hole; the conductive film defines a third central hole for allowing the air flowing pipe extending through, the conductive film is mounted on the insulating gasket and is insulated from the first electrode plate, to cooperate with the second electrode plate to form a parallel-plate capacitor; the second conductive bracket is mounted on and electrically connected to the conductive film; wherein the controlling device comprises a controlling circuit board, the controlling circuit board define a fourth central hole for allowing the first air flowing pipe extending through, the controlling circuit board is disposed in the gap defined by the top wall of the case and the top end surface of the second conductive bracket, and is electrically connected to the top wall and the second conductive bracket; wherein the first air flowing pipe extends through the first central hole, the second central hole, the third central hole and the fourth central hole, and further electrically connect an inner wall of the controlling circuit board with the inner wall of the driving circuit board; wherein the conductive film, the first conductive bracket, the driving circuit board, the insulating gasket and the second air flowing pipe cooperatively define the balance chamber; the conductive film, the second conductive bracket, the controlling circuit board and the first air flowing pipe cooperatively define the annular negative chamber.

2. The air switch as described in claim 1 , wherein the first air flowing pipe comprises a first pipe, a second pipe, and a third pipe, the out diameter of the second pipe is greater than that of the first pipe, and the out diameter of the third pipe is greater than that of the second pipe; the outer diameter of the first pipe is suitable for the diameter of the first central hole, the outer diameter of the second pipe is suitable for the diameter of the second central hole of the first electrode plate, the diameter of the inner gasket unit, the diameter of the third central hole of the second electrode plate, the diameter of the fourth central hole of the controlling circuit board respectively; a step between the first pipe and the second pipe abuts against and is electrically connected to the top surface of the driving circuit board, and a step between the second pipe and the third pipe abuts against and is electrically connected to the top surface of the controlling circuit board; the second pipe defines an extending hole for communicating the inner space of the second pipe with the negative chamber.

3. The air switch as described in claim 1 , wherein the controlling device comprises a first pluggable conductive body, a second pluggable conductive body and a third pluggable conductive body, which are arranged on a top surface of the controlling circuit board; the second pluggable conductive body is electrically connected to one of a cathode and an anode of the battery device, and the third pluggable conductive body is electrically connected to the other of the cathode and anode of the battery device; the first pluggable conductive body is electrically connected to the third pluggable conductive member via the controlling circuit board.

4. The air switch as described in claim 1 , wherein the switch body further comprises an insulator, the insulator is substantially ring shaped, and is arranged between the first and second conductive brackets and the cylindrical sidewall of the case.

5. The air switch as described in claim 1 , wherein the insulating gasket comprises an outer gasket unit and an inner gasket unit; the outer gasket unit and the inner gasket unit are mounted to the outer wall and inner wall of the first electrode plate respectively; the outer wall and the inner wall of the conductive film are supported by the outer gasket unit and the inner gasket unit respectively.

6. An electronic cigarette, comprising an air switch, wherein the air switch comprises a switch body and an airflow channel extending through the switch body;
the switch body comprises an airflow sensor for sensing air passing through the airflow channel and a controlling device electrically connected to the airflow switch;
the airflow sensor comprises a negative chamber communicating with the airflow channel, a balance chamber communicating with the outside of the air switch, a first electrode plate and a second electrode plate parallel to and being spaced apart from the first electrode plate; the second electrode plate comprises a conductive film, the conductive film is arranged between the negative chamber and the balance chamber, and cooperates with the first electrode plate to form a parallel-plate capacitor to detect a difference in the pressure between the negative chamber and the balance chamber; the parallel-plate capacitor is electrically connected to the controlling device, to transmit the difference signal to the controlling device;
the switch body comprises a first air flowing pipe, a conductive case, a light emitting device, a first conductive bracket, an insulating gasket, and a second conductive bracket; the first air flowing pipe defines the airflow channel; the case comprises an annular bottom wall, a cylindrical sidewall protruding from an outer edge of the bottom wall, and a top wall fixed to a top end of the cylindrical sidewall away from the bottom wall; wherein the light emitting device comprises a driving circuit board, and

Assignees

• Shenzhen Smoore Technology Ltd

Inventors

• Liu Pingkun

Classifications

• A24F47/008 Primary

  Human Necessities · mapped topic

• G05D7/0635

  by action on throttling means (G05D7/0688, G05D7/0694 take precedence) · CPC title

• G05D7/0694

  by action on throttling means or flow sources of very small size, e.g. microfluidics (microvalves F16K99/0001; microstructural devices per se B81B) · CPC title

• G01F1/661 Primary

  using light · CPC title

• A24F40/50

  Control or monitoring · CPC title