Abstract: A construction of an articulating portion for articulated railway cars or the like formed by coupling front and rear bodies pivotably connected one after another by a truck interposed therebetween. Inside a pair of front and rear side wall panels in the articulating portion, a flexible cover consisting of an elastic plate is disposed, and an elastic sealing member provided on the longitudinal opposite edges of the flexible cover is contacted respectively with the pair of side wall panels by biasing. Under a pair of front and rear ceiling panels in the articulating portion, there is provided a ceiling cover, whose lateral opposite edges are coupled to the upper edge of the flexible cover, and the elastic sealing member provided on the longitudinal opposite edges of the ceiling cover is contacted respectively with the pair of ceiling panels by biasing.