Patent ID: 7455137

Claim:
An industrial truck, comprising: a vehicle frame having a frame segment with a lateral frame opening to hold a battery block; a door pivotably connected to the frame to cover the frame opening, wherein the door is pivotable outwardly around a substantially vertical axis of rotation, wherein the door is connected to the vehicle frame by a double hinge, and wherein a second axis of rotation of the door is parallel to and at a spaced distance from a first axis of rotation and the second axis of rotation changes its position when the door is pivoted around the first axis of rotation; and protection against buckling configured such that when the door is in a closed position, an intermediate door leaf that is located between the axes of rotation can be blocked in position with respect to an adjacent main leaf, wherein the protection against blocking comprises a spring element which, in the closed position of the door, biases the intermediate leaf toward the open position and is in engagement with a stop fastened to the main leaf, and wherein the intermediate leaf and the main leaf enclose an obtuse angle.