| 摘要 |
A tandem of independent powered door operators for passenger transit vehicles having a central lock mechanism and enabling each of the doors to be moved with a force of less than 80N. Such door operators can be used on vehicles where the cross-sectional area within which to accommodate a door operator is limited. The door operator comprises an electric motor, a helical drive screw rotatably connected to such electric motor with a universal joint, a drive nut assembly engaged with such drive screw, a door hanger rod, a first door hanger bracket connected to a door and engaging the drive nut, a second door hanger bracket connected to a door and engaging a centrally located lock mechanism enabling locking of such door in a fully close position. |
