US 12,454,970 B2
Joint structure
Junji Fujiwara, Osaka (JP); Atsuhiro Kawamoto, Hyogo (JP); Hitoshi Nishimura, Osaka (JP); Yasushi Mukai, Osaka (JP); and Shigeki Yonemori, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 16/087,145
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 24, 2017, PCT No. PCT/JP2017/011976
§ 371(c)(1), (2) Date Sep. 21, 2018,
PCT Pub. No. WO2017/170213, PCT Pub. Date Oct. 5, 2017.
Claims priority of application No. 2016-067198 (JP), filed on Mar. 30, 2016; and application No. 2016-077848 (JP), filed on Apr. 8, 2016.
Prior Publication US 2019/0101145 A1, Apr. 4, 2019
Int. Cl. F16B 5/08 (2006.01); B23K 9/02 (2006.01); B23K 9/167 (2006.01); B23K 9/173 (2006.01); B23K 9/23 (2006.01); B23K 103/18 (2006.01)
CPC F16B 5/08 (2013.01) [B23K 9/02 (2013.01); B23K 9/167 (2013.01); B23K 9/173 (2013.01); B23K 9/232 (2013.01); B23K 2103/18 (2018.08)] 10 Claims
OG exemplary drawing
 
1. An arc welding method comprising:
placing a middle plate in contact with and between an upper plate and a lower plate that are made of metals weldable to each other,
the upper plate has an upper plate projection extending from a lower surface of the upper plate,
the lower plate has a lower plate projection extending from an upper surface of the lower plate,
wherein the middle plate has a penetrating part and the middle plate is difficult to weld to the upper plate and the lower plate, a material of the middle plate being different from the upper plate and the lower plate,
in the placing the middle plate in contact with and between the upper plate and the lower plate, an upper-lower plate gap is formed between a lower surface of the upper plate projection and an upper surface of the lower plate projection, the upper-lower plate gap corresponding to a region in the penetrating part, and
the arc welding method further comprises, after the placing of the middle plate in contact with and between the upper plate and the lower plate, applying an arc on an upper side of the upper plate projection disposed toward the region corresponding to the penetrating part, so that the upper plate projection and the lower plate projection are fused and bonded together via the penetrating part, by which the middle plate is compressed between the upper plate and the lower plate and is fixed to the upper plate and the lower plate by welding the upper-lower plate gap, and
the upper-lower plate gap being configured to prevent a defective weld by having a size that varies within a specific range depending on a thickness of the upper plate on an arc-incident side,
wherein the middle plate includes a resin material,
wherein in the placing the middle plate in contact with and between the upper plate and the lower plate, a middle plate gap is configured between a rim of the penetrating part and an outermost edge of the upper plate projection and between the rim of the penetrating part and an outermost edge of the lower plate projection, the middle plate gap being configured to prevent a defective weld by having a size that varies depending on a thickness and material-type of the middle plate, and
wherein the middle plate gap is configured between an uppermost portion of the rim of the penetrating part and the outermost edge of the upper plate projection and between a lowermost portion of the rim of the penetrating part and the outermost edge of the lower plate projection.