| 摘要 |
A door control mechanism for use with a pivoted door and associated frame, and a combination door, door frame and door control mechanism especially as embodied in a truck or cargo container. The control mechanism is comprised of identical cam-type latches on opposite ends of a shaft rotatably connected to a pivoted door by bearing members engaged by the latches, and keepers secured to the door frame adjacent edges of the door that are transverse to the door pivot axis. The shaft can be turned about its longitudinal axis to engage and disengage the latches and keepers. Each cam or latch is symmetrical about the axis of the shaft and has a central U-shaped body portion which is welded to the shaft by welds running lengthwise of the shaft and two oppositely projecting forked portions. The keepers have two spaced post portions that are straddled by the forked portions of the cam when in a latching position. Tapered surfaces of the posts are cooperable with tapered surfaces of the forked portions during latching to shift the door into alignment with the frame and to prevent lateral shifting or distorting of the frame relative to the door after latching. One post portion of each keeper has projecting flange portions with concave surfaces that receive and cover ends of the associated cam, and retain the door in a closed position. The latching cams and keepers are constructed so they can be forged for economic manufacture. |
