Cabin door latching mechanism

Abstract

The invention relates to the field of cabin door design, and particularly discloses a cabin door latching mechanism. The cabin door latching mechanism is located on a cabin door frame and comprises arocker arm assembly, a lock, a latch and a connecting rod, the rocker arm assembly is connected to a driving source, the rocker arm assembly, the lock and the latch can rotate around the self axis, and the three axes are parallel to one another and distributed in a triangular mode. According to the cabin door latching mechanism, the rocker arm assembly and the lock adopt clearance fit so as to achieve the purpose of driving the lock and maintain the position of the lock after complete opening, meanwhile, the possibility of mislocking is avoided, the driving source and the limiting device of the lock are omitted accordingly, the weight is reduced, and the system is simplified; and the rocker arm assembly drives the latch through the connecting rod, the point of intersection connected to oneend of the rocker arm assembly adopts over-center design, the point of intersection connected to one end of the latch adopts non-over-center design, the purpose of noninterference with the lock during unlatching and latching is achieved, meanwhile, the fact that the lock locks the position of the latch can be ensured, therefore, the entire latching mechanism is simple in structure, light in weight, and high in reliability, the connecting rod and the rocker arm assembly adopt adjustable design, and assembling and adjusting are facilitated.

Description

technical field [0001] The invention belongs to the field of hatch design, in particular to a hatch latch mechanism. [0002] technical background [0003] In the process of modern structural design, hatch doors have been widely used. Hatch doors are divided into hazard doors and non-hazard doors. The hazard door locking mechanism requires higher reliability and generally needs to be designed as a latch mechanism. The function of the latch is to maintain the position of the hatch, and the function of the lock is to maintain the position of the bolt. Due to the different functions and forms of the cabin doors, the existing cabin door latch mechanisms are designed in different forms, weights, costs and reliability. Especially now, aircraft cabin door latch mechanisms generally have complex structures and heavy weights, which are increasingly difficult to meet. actual needs. Contents of the invention [0004] The purpose of the present invention is to provide a hatch door la...

AI Technical Summary

Problems solved by technology

Due to the different functions and forms of the cabin doors, the existing cabin door latch mechanisms are designed in different forms, weights, costs and reliability, especially nowadays, the aircraft cabin door latch mechanisms generally have the problems of complex structure and heavy weight, which are becoming more and more difficult to meet actual needs

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