US Patent 9822579 Vehicle door structure

A vehicle door structure includes a door lock unit configured to lock a sliding door and a swing door when the sliding door is in a fully opened state, and a lock detection unit configured to detect a locked state between the sliding door and the swing door by the door lock unit. The door lock unit has a locking pin disposed at a guide body, a locking pin biasing member configured to bias the locking pin toward the swing door, and a fitting section formed at a slide rail and fitted onto the locking pin. The lock detection unit detects the locked state between the sliding door and the swing door by detecting the locking pin being fitted into the fitting section.