Door sash

A door sash attached to a door body openably and closably installed on a door opening of a vehicle body and formed of one sheet of a plate material, comprising:

• a design part having a surface on a vehicle outer side exposed or covered with a decorative member;
• a tubular part positioned closer to a vehicle inner side than the design part, the tubular part having a closed cross section;
• and
• a connection part connecting the design part and the tubular part with each other, wherein
• the connection part includes
• a first connection part continuous to the design part,
• a second connection part continuous to the tubular part, and
• a stepped part provided between the first connection part and the second connection part,
• the second connection part is positioned closer to an inner side of the door opening than the first connection part,
• a vicinity of one end of the plate material in a cross-sectional view includes an overlapping part forming the closed cross section by overlapping on the second connection part from an outer side of the door opening, and
• a surface of the overlapping part is positioned closer to the inner side of the door opening than a surface of the first connection part, or flush with the surface of the first connection part.