Railcar and door pocket post

A railcar comprising:

• a side entrance peripheral member including a door pocket post, the side entrance peripheral member surrounding a side entrance of the railcar, the door pocket post having a double skin structure in which an outer portion and an inner portion are coupled to each other by a coupling portion, the inner portion being provided inwardly of the outer portion in a car-width direction of the railcar;
• and
• a side sliding door including a peripheral portion that is pressed against an edge portion of the side entrance peripheral member via a rubber seal at a time of a closed state of the side entrance of the railcar, the edge portion of the side entrance peripheral member extending along the side entrance of the railcar, the side sliding door being pulled into a door pocket space adjacent to the inner portion of the door pocket post at a time of an open state of the side entrance of the railcar, wherein
• the side entrance peripheral member includes a projecting portion projecting inwardly in the car-width direction from the inner portion to beyond the inner portion into the door pocket space in the car-width direction, the projecting portion including a tip end that contacts the rubber seal provided at at least a part of a region constituted by an upper edge and lower edge of the edge portion of the side entrance peripheral member and a lateral edge of the edge portion of the side entrance peripheral member, the lateral edge being located at a door pocket post side.