A blocking type hatch door open position lock mechanism

Abstract

The invention relates to a blocking type hatch door opening position lock mechanism, a blocking type hatch door opening position lock mechanism, an upper support and a lower support are fixedly connected to the hatch structure, the upper support is hinged with an upper crank, the upper The other end of the crank is hinged with a gas spring, the other end of the gas spring is hinged with the lower support, the cover plate is hinged with the lower support, one end of the torsion spring is pressed on the lower support, the other end is pressed on the outward side of the cover plate, The plate, connecting rod, lower crank and hatch structure are connected to form a four-bar mechanism. The mechanism directly cooperates with the opening power source of the cabin door, the locking method is direct and precise, takes up little space, and can realize automatic locking of the cabin door. When closing the hatch, the lock position of the hatch can be unlocked through the unlocking handle, which can also be used as the closing handle at the same time, and the closing operation is simple, coherent and easy to realize.

Description

technical field [0001] The invention relates to the field of civil aircraft door mechanisms, in particular to a mechanism applied to a civil aircraft door to lock the door in a fully open position. Background technique [0002] Civil aircraft doors can be divided into three types: blocking type, semi-blocking type and non-blocking type. The size of the plug-type hatch is larger than the opening of the fuselage, and the opening form of this kind of hatch is mostly turned inward. After the cabin door is fully opened, an open position lock mechanism needs to be designed to lock the cabin door in the fully open position. The locking mechanism should ensure that the cabin door is in a fixed position without chattering, etc., and can withstand a certain load. When closing the hatch, it is necessary to unlock the open position lock mechanism first, and then drive the hatch to flip and close. The unlocking form should be simple, clear and easy to operate. [0003] At present, mos...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the blocked hatches adopt the form of independent open position lock, and some hatches even need to be locked manually. The mechanism is more complicated, the operation steps of opening and closing the door are more, and it takes up a large internal space.

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