JPS6447617A - Back door device for vehicle - Google Patents

Abstract

PURPOSE:To facilitate accommodation and taking-out of a freight by constituting a back door from a main door which can be freely sprung up by pivotally installing the upper edge onto the upper edge of an opened port and a subdoor whose upper edge part is pivotally installed onto the lower part of the main door and installing a locking device and a releasing means onto each door. CONSTITUTION:The upper edge of a main door 30 is pivotally installed onto the upper edge of an opened port 11 by a door hinge 13. A back door 20 is formed by pivotally installing the upper edge of a subdoor 40 onto the lower edge of the main door 30 by a hinge mechanism 60. A locking device 50 for locking the main door 30 by the engagement with the striker 15 of a car body 10 is installed onto the main door 30. In the state where the subdoor 40 is opened, the lock is released by the operation of a door handle 55. Further, a sublock device 90 engaged with the striker 29 is installed onto the subdoor 40, and the lock of the subdoor 40 is released by the operation of a cylinder lock 96. With such constitution, the opened port can be opened in two stages, and accommodation and taking-out can be facilitated according to the dimension of a freight.