| 摘要 |
A rail vehicle capable of preventing reduction in strength and noise occurrence in a connecting portion of a low roof construction body to a roof construction or a side construction body, and facilitating mounting of the low roof construction body to the roof construction body or the side construction body, its manufacturing method and a hollow shape member used for the same are provided. In joining a hollow shape member 120 constructing a side construction body and a hollow shape member 210 constructing a low roof construction body 20 , an uppermost portion above a spot to be a joint portion of the hollow shape member 120 to the low roof construction body 20 is cut, and a first protruded rib 124 and a second protruded rib 125 are left at an upper end portion 128 of the hollow shape member 120 toward the low roof construction body 20 . Next, the low roof construction body 20 is lowered from above the side construction body 12 , the first engaging rib 214 and the second engaging rib 215 of the low roof construction body 20 are mounted on the first protruded rib 124 and the second protruded rib 125 , and butted portions 220 and 221 are welded from a vehicle outer side or a vehicle inner side. Occurrence of a level difference of the welding spot which becomes a noise generation source can be prevented, and manufacture of the vehicle body can be facilitated.
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