| 摘要 |
<p>PURPOSE:To obtain a device usable both for a bed with a side stopper and a flat bed in a truck, by such means that an upper hinge is rotated for a middle hinge when the stopper plate is allowed to fall to the outside and the upper and middle hinges are rotated for a fixed hinge in a state as they are at a right angle when it falls to the inside. CONSTITUTION:When a side stopper plate 12 is pressed outward, a middle hinge 5a is in a contact state to an upper floor frame 9 not capable of rotating in the left direction, then the stopper plate 12 falls rotating in the left direction about a pin 4 of an upper hinge as an axis. When the stopper plate 12 is erected, a weight of the stopper, pressing the pin 4 downward, keeps the middle hinge 5a in a state of contact to the upper floor frame 9, and the stopper 12 can be erected rotating about the pin 4 as a rotating axis. If the side stopper plate 12 is pressed inward, the stopper plate 12, being not rotatable in the right direction for the middle hinge 5a, is rotated in the right direction about a pin 8 of a fixed hinge 10 as an axis in a state as it is in perpendicular to the middle hinge 5a, and the stopper plate 12 is contacted to a floor plate 13 provided on a truck bed when it is horizontally placed. When the side stopper 12 is brought up while being slightly pressed outward, it can be erected in a state of making a right angle with the middle hinge 5a.</p> |
