Patent ID: 11920386
Assignee: LATECOERE
Field: Transport (Mechanical engineering)
Classification: CPC B  E | IPC B  E

Claim 0:
1. An aircraft door comprising:
a leaf (5) comprising a door structure (9), an external wall (6) fixed to the door structure (9), and door stops (7);
a surround comprising a door frame (3) intended to be fixed to the fuselage of the aircraft, the door frame (3) comprising frame stops (4);
a support arm (10) connected to the leaf (5) and comprising one end mounted to pivot on the door frame (3), the support arm (10) and the leaf being movable between: a closed position in which the leaf (5) closes the door frame (3), the door stops (7) being locked against the frame stops (4); an unlocking position in which the door stops (7) are released from the frame stops (4); and an open position in which the leaf (5) is disengaged from the door frame (3);
a locking and unlocking mechanism adapted to control the passage from the closed position to the unlocking position, and vice versa, the locking and unlocking mechanism comprising for its actuation an internal lever (15) and an external lever (19), the levers (15,19) being mounted on the door structure (9) and being movable between a locking position and an unlocking position;
a control shaft (17) extending along a vertical axis, the control shaft (17) being mounted on the door structure (9) in a pivot connection (18) around the axis of the control shaft (17), the internal lever (15) and the external lever (19) being connected to the control shaft (17) while extending transversely to the control shaft (17) so that an action on one of the levers (15,19) causes the control shaft (17) to rotate about its axis;
a guide track (29) extending in a plane orthogonal to the control shaft (17), the guide track (29) comprising at an end an opening (33);
an actuating finger (32) is mounted on an actuation arm (30) integral with a support arm (10), the actuating finger (32) being adapted to cooperate with the guide track (29);
a mechanical transmission adapted to cause a movement of the actuating finger (32) when the control shaft (17) is actuated in rotation;
the locking and unlocking mechanism having:
an actuation configuration corresponding to the angular travel of the levers (15,19) between the locking position and the unlocking position, in which configuration the actuating finger (32) is inserted into the guide track (29), the rotation of the control shaft (17) causing a movement of the actuating finger (32) along the guide track (29);
a release configuration in which the levers (15,19) are in the unlocking position, in which configuration of the actuating finger (32) is movable between a first position where the actuating finger (32) is arranged at the level of the opening (33) of the guide track (29), and a second position where the actuating finger (32) is outside the guide track (29), the leaf (5) then being in the open position;
wherein the mechanical transmission comprises a fork (21) arranged opposite the guide track (29) and connected to the control shaft (17), and in the actuation configuration, the pivoting of the fork (21) causes a movement of the actuating finger (32) along the guide track (29); and
wherein the fork (21) extends in a plane orthogonal to the control shaft (17), and in that, the fork (21) is pivotally mounted on the door structure (9) about an axis parallel to the control shaft (17).