Cabin door locking mechanism

Abstract

The invention discloses a cabin door locking mechanism which comprises an inner handle device, an outer locking disc device, an upper locking pin device, a lower locking pin device, a pulling rod, a first rotating shaft, a second rotating shaft, an upper locking base and a lower locking base. The first rotating shaft comprises a columnar shaft core composed of a plurality of steel wires, a plastic guiding tube coated with the peripheral of the columnar shaft core, a plurality of copper wires arranged on the periphery of the plastic guide tube in the axial direction of the columnar shaft core and a plastic protective sleeve coated with the periphery of the copper wire and extending in the axial direction; the inner handle device is connected with the outer locking disc device through the pulling rod; the two ends of the columnar shaft core are connected to the upper locking pin device and the outer locking disc device respectively; the two ends of the second rotating shaft are connected to the lower pin device and the outer locking disc device respectively; the upper locking pin device is matched with the upper locking base; the lower locking pin device is matched with the lower locking base. The cabin door locking mechanism provided by the invention is very flexible, brings convenience to open the cabin door, and is convenient to mount.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a hatch locking mechanism. Background technique [0002] The door locking mechanism is an important structure to realize the opening and locking of the door. At present, the commonly used door locking mechanism consists of an outer locking plate device, an inner handle device, a pull rod connecting the inner handle device and the locking outer plate device, and upper and lower lock pins. device etc.; the upper and lower lock pin devices are connected with the outer lock disc device through two linkage shafts. [0003] In the related art, the upper part of the hatch has a certain radian, and the interlocking shaft connecting the outer lock disc device and the upper lock pin device needs to be provided with a certain arc support to transition to the upper part of the hatch. The linkage shaft between the upper lock pin devices is usually a rigid hard rod with a radian; when opening the hatch...

AI Technical Summary

Problems solved by technology

[0003] In the related art, the upper part of the hatch has a certain radian, and the interlocking shaft connecting the outer lock disc device and the upper lock pin device needs to be provided with a certain arc support to transition to the upper part of the hatch. The linkage shaft between the upper lock pin devices is usually a rigid hard rod with a radian; when opening the hatch, when the outer lock disc device is linked with the inner handle device, the outer lock disc device is pulled by the rigid linkage shaft Lock the pin device and open the cabin door, but, in the related art, because the arc of the upper half of the cockpit door is relatively large, when the lock pin device is linked by the hard first transmission shaft, the driving with a radian It is inevitable that the upper part of the hatch will collide with the hard linkage shaft, so that the lock pin device connected to the rigid linkage shaft is not flexible, which will make it difficult to open and lock the hatch

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