TUERSCHLOSS MIT SICHERHEITSAUSKLINKUNG

A lock structure for an upwardly acting door of a truck van wherein a latch bolt and a manually engageable actuating member are pivotally mounted upon the door for movement about an axis substantially perpendicular to the plane of the door when it is in the closed position. The latch bolt has an elongated arcuate hook portion adapted to extend below the lower edge of the door for engagement with a catch mounted on the truck bed. The latch bolt is urged by gravity to move more securely into the latched position. The latch bolt and actuating member are pivotally mounted on a mounting plate which is releasably secured to the external side of the door by a releasable coupling device accessible solely from the inside of the door, even though the latch bolt is initially engaged with the catch. The actuating member coacts with a keeper device mounted on the door and, when connected thereto, as by a padlock, maintains the latching mechanism connected to the door even after the coupling device has been released.