Cabin door opening and closing error prevention mechanism

Abstract

The invention relates to the technical field of cabin door structure design, and particularly provides a cabin door opening and closing error prevention mechanism. The cabin door opening and closing error prevention mechanism comprises a linkage part, a limiting block, a locking part and a tension spring, wherein the linkage part is arranged in a cabin door, the end A of the linkage part is hingedto the cabin door through a first rotating shaft, the end b of the linkage part is rotationally connected with a connecting rod which is in linkage with a cabin door handle, the limiting block is fixed in a door frame of the cabin door, the locking part is arranged in the cabin door and is rotationally connected with the cabin door through the second rotating shaft, a hook is arranged on an errorprevention plate, the hook hooks the end B of the linkage part after the cabin door is opened to enable the linkage part to be fixed, a sliding object is arranged on one side, close to the door frame, of the locking part, the sliding object and the limiting block cooperate with each other, one end of the tension spring is fixed to the cabin door, the other end of the tension spring is fixed to the locking part, and the tension spring applies the force which is the same as the opening direction of the cabin door to the locking part. According to the cabin door opening and closing error prevention mechanism, the cabin door is limited to achieve the effect that a locking mechanism can perform locking only after the cabin door is closed normally, so that the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of cabin door structure design, in particular to a cabin door opening and closing error prevention mechanism. Background technique [0002] At present, most aircraft door positioning pin mechanisms only have the positioning function of the open state of the cabin door to realize the locking and unlocking of the lock mechanism. However, when some human errors or other special circumstances occur, abnormal locking or jamming of the positioning pin mechanism is prone to occur. and so on. Contents of the invention [0003] In order to overcome at least one defect in the above-mentioned prior art, the present invention provides a cabin door opening and closing error prevention mechanism, including: [0004] The linkage part is arranged in the hatch, the A end of the linkage part is hinged with the hatch door through the first rotating shaft, and the B end of the linkage part is rotatably connected with the con...

AI Technical Summary

Problems solved by technology

[0002] At present, most aircraft door positioning pin mechanisms only have the positioning function of the open state of the cabin door to realize the locking and unlocking of the lock mechanism. However, when some human errors or other special circumstances occur, abnormal locking or jamming of the positioning pin mechanism is prone to occur. and so on

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