| 摘要 |
The following opening, closing and holding mechanism is proposed for a front flap (2) which is arranged on the driver's cab of a cab-over-engine heavy-goods vehicle, covers vehicle units located in the space behind it, is fastened to front bearing points at the top and is pivotable about these out of the end closing position into the end opening position and back again. The front flap (2) is articulated on at least one pneumatic spring (5) mounted pivotably on the front wall (1) of the driver's cab and consisting of a cylinder (5/1) and of a piston (5/2) acting therein. The two bearing journals (6/1, 7/1) for the end articulation points of the pneumatic spring (5) are arranged in such a way that the front flap (2) is held both in the end opening position and in the end closing position by means of a "position beyond dead centre" of the pneumatic spring or pneumatic springs and, during the pivoting of the front flap (2) by hand, the further opening or further closing of the latter is brought about, in each case after the dead-centre position of the pneumatic spring or pneumatic springs has been overcome, automatically by the latter up to the respective end position of the front flap. This front flap therefore proves especially easy to handle on account of the characteristic properties of its opening, closing and holding mechanism. <IMAGE>
|
