Cabin door control lock

Abstract

The invention provides a cabin door control lock. The cabin door control lock comprises a lock part and a self-locking device. The lock part comprises a handle and a lock tongue. The handle is arranged outside a cabin door and fixed with the lock tongue, and the handle and the lock tongue coaxially rotate. A lock groove is formed in a door frame of the cabin door, and the lock tongue can rotate in the lock groove. The self-locking device comprises a pin shaft installed in the handle. A button is fixed to the end, away from the cabin door, of the pin shaft, a groove is formed in the handle, and the button is arranged in the groove. A certain distance is reserved between the bottom face of the button head and the bottom face of the groove. The self-locking device further comprises a supporting seat and a keyway which are both arranged in the cabin door and mutually fixed. A lock pin and a spring are installed in the keyway, and the two ends of the spring make contact with the keyway and the lock pin correspondingly. The lock pin, the spring, the keyway and the pin shaft are coaxially arranged, and one end of the lock pin stretches into the handle and makes contact with the pin shaft.

Description

technical field [0001] The invention relates to the technical field of aircraft cabin door lock structure design, in particular to a cabin door control lock. Background technique [0002] The door of a certain type of aircraft is the entrance door of the tail compartment of the fuselage, and its main function is to provide necessary passages for the maintenance of the tail compartment structure and control system. During the flight of the aircraft, the door and other doors together ensure the airtightness of the inside of the fuselage, otherwise the flight safety of the aircraft will be endangered. There are door locks and end switches on the hatch. When the hatch is in the correct closed position, the end switch will turn off the warning lights in the cockpit. When the hatch is in the open position, the warning lights will be on to notify the driver. The whole process This is achieved by mechanical movement between the door lock and the end switch. [0003] At present, th...

AI Technical Summary

Problems solved by technology

[0003] At present, there is a cargo storage area between the cabin door and the arresting net. During the process of loading cargo, due to improper operation by the staff, the cargo collides with the door lock button, the door lock button is smashed, lost, etc., and the During the process, the cargo between the arresting net and the cabin door may collide with the door lock button, and the cabin door lock may be accidentally opened, which will affect flight safety.

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