VEHICLE DOOR COUPLING DEVICE

The present disclosure relates to a vehicle door coupling device, and more specifically, to a vehicle door coupling device for mechanically coupling together a first member having a first hole and a second member having a second hole at a position corresponding to the first hole. The vehicle door coupling device includes: a stopper configured to support the first member; and a shaft including a crossbar configured to support the second member and couple the second member to the first member when the shaft is rotated to a final coupling position, and a hook portion configured to cause the shaft to be caught on the first member in a temporary coupling position, the shaft being connected to support the stopper and the crossbar, wherein the shaft is shaped such that the shaft is inserted into the first hole of the first member and the second hole of the second member and rotatably passes therethrough, and an material for airtight is provided on the shaft to maintain airtightness between the shaft and the first hole of the first member in the final coupling position.