HEATING ELEMENT, AN ELECTRONIC CIGARETTE AND A METHOD FOR FORMING THE HEATING ELEMENT
A heating element, electronic cigarette and method for forming heating element. The heating element includes a heating part and a connection part extending along both ends of the heating part so as to form a first connection end and a second connection end, which are electrically connected to a drive circuit respectively. The first connection end, the second connection end and the heating part are integrative, and the first connection end and the second connection end both has a coating covered on outer surface of them respectively. The heating element is integrated designed without any complex technique of the welding or riveting, and via electroplating to form a coating on the heating element instead, the production efficiency of the heating element gets highly improved, costs reduced and a stable resistance value gets obtained in the mass-produced heating elements, involving a consistency in mass production.
1 . A heating element including a heating part and a connection part extending along both ends of the heating part so as to generate a first connection end and a second connection end which are electrically connected to the drive circuit respectively, characterized in that the first connection end, the second connection end and the heating part are integrated, and the first connection end and the second connection end are provided with a coating with low resistivity, covering on their outer surfaces.
2 . The heating element of claim 1 , wherein the heating part, the first connection end and the second connection end are made of alloy material, with circular cross section, the first connection end and the second connection end extend along both ends of the heating part in axial direction respectively with the same extending distance or different extending distances and are set on corresponding ends of the spiral heating part, the coating extends outward in radical direction of the first connection end and the second connection end so as to forming an evenly coverage of the coating on the first connection end and the second connection end, and the dimension of the cross section between the heating part and the first connection end is equal to that of the cross section between the heating part and the second connection end.
3 . The heating element of claim 1 , wherein the heating part, the first connection end and the second connection end are all in shape of strip with cross section of polygon and made of linear alloy material, the first connection end and the second connection end extend horizontally along each end of the heating part with the same extending distance or different extending distances and get mounted on to the corresponding end of the spiraled heating part, the coating extends outward in radical direction of the first connection end and the second connection end so as to generate an even coverage of the coating, and the dimension of the cross section between the heating part and the first connection end is equal to that of the cross section between the heating part and the second connection end.
4 . The heating element of claim 1 , wherein the heating part comprises one of a plurality of alloys including nicochrome, economet, aludirome and constantan alloy.
5 . The heating element of claim 4 , wherein the coating comprises one of the materials of gold, silver, cuprum or tin.
6 . The heating element of claim 4 , wherein the coating is made of alloy having low resistivity.
7 . An electronic cigarette, wherein the heating element claimed in claim 1 is mounted in the atomizer chamber of the electronic cigarette.
8 . A method of forming heating element, characterized in that the method comprises procedures as follows:
A) Integrated forming the heating part and the connection part comprising a first connection end and a second connection end, both extending along each end of the heating part;
B) Electroplating a coating with low resistivity respectively on the outer surfaces of the first connection end and the second connection end;
C) Connecting the first connection end and the second connection end with drive circuit respectively.
9 . The method of forming heating element of claim 8 , wherein the procedure A further comprises:
A1) Selecting alloy materials with high resistivity;
A2) Cutting the selected alloy materials into pieces;
A3) Dividing the cut alloy material pieces into areas including the heating part, the first connection end and the second connection end, with the first connection end and the second connection end set onto each end of the heating part respectively.
10 . The method of forming heating element of claim 9 , wherein the procedure B further comprises:
B1) electroplating the first connection end and the second connection end by using materials with low resistivity, forming a coating with even coverage on outer surfaces of the first connection end and the second connection end;
B2) curling the electroplated alloy material, making the heating part in spiral shape, and making the first connection end and the second connection end correspondingly set on each end of the spiral heating part respectively, with the distance between the first connection end and the corresponding end of the spiral heating part is equal to/or different from the distance between the second connection end and the corresponding end of the spiral heating part.