Different material joining structure and different material joining method

• Main Authors: OKADA YASUMASA, YAMADA TAKAYUKI
• Format: Patent
• Language: Chinese; English
• Published: 26.09.2017
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FORGE FURNACES; FORGING; HAMMERING; MACHINE TOOLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The present invention is provided with a side outer panel (14) formed of a dissimilar metal material having higher conductivity than a roof side rail (12), and a rivet (24) joining the roof side rail (12) and the side outer panel (14), wherein: the rivet (24) is formed of the same metal material as the roof side rail (12), and has a head portion (28) that is swaged and fastened, in a non-penetrating state, to the surface of the side outer panel (14) that faces the roof side rail (12), and a bottom portion (30) that comes into contact with the surface of the roof side rail (12) that faces the side outer panel (14); and a nugget (36), which is a joint portion, is formed between the roof side rail (12) and the bottom portion (30) of the rivet (24) by carrying out resistance welding with the rivet (24) disposed between the roof side rail (12) and the side outer panel (14). 种异种材料接合构造，其具有：由导电性比车顶侧梁(12)的导电性高的异种金属材料形成的侧外面板(14)；和将车顶侧梁(12)与侧外面板(14)接合的铆钉(24)，铆钉(24)由与车顶侧梁(12)相同的金属材料形成并具有：头部(28)，其以非贯穿状态铆接紧固于侧外面板(14)中的与车顶侧