US 11,890,701 B2
Resistance spot welding electrode cap
Shanglu Yang, Shanghai (CN); Yanjun Wang, Shanghai (CN); and Wu Tao, Shanghai (CN)
Assigned to SHANGHAI INSTITUTE OF OPTICS AND FINE MECHANICS, CHINESE ACADEMY OF SCIENCES, Shanghai (CN)
Appl. No. 17/046,830
Filed by Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai (CN)
PCT Filed Dec. 18, 2018, PCT No. PCT/CN2018/121780
§ 371(c)(1), (2) Date Oct. 12, 2020,
PCT Pub. No. WO2019/196494, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 201810327005.3 (CN), filed on Apr. 12, 2018.
Prior Publication US 2021/0146484 A1, May 20, 2021
Int. Cl. B23K 35/02 (2006.01); B23K 11/11 (2006.01); B23K 11/30 (2006.01); B23K 11/16 (2006.01)
CPC B23K 35/0205 (2013.01) [B23K 11/11 (2013.01); B23K 11/3009 (2013.01); B23K 11/16 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electrode cap for resistance spot welding, which comprises:
a cylindrical electrode cap body (1);
a contact surface (3) with a welding surface (31), a circumference (32), and a groove (33), wherein the groove (33) is located in the center of the contact surface (3), a upper edge of the groove (33) is connected with the welding surface (31), and the circumference (32) is the outer diameter of the welding surface (31);
a side surface (2) which is a transition area from the electrode cap body (1) to the contact surface (3), and has a shape of an arc surface or a tapered surface;
wherein an upper surface and a lower surface of the side surface (2) are respectively connected with the contact surface (3) and one end of the electrode cap body (1) in the form of arc or chamfer.