Insurance structure and insurance method for airplane cabin door locking state

A technology for aircraft cabins and cabin doors, which is applied to aircraft doors, aircraft accessories, and locks controlled by non-mechanical transmissions. The effect of high insurance factor

Active Publication Date: 2020-01-10
中航西飞民用飞机有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flight electromagnetic lock uses the battery as the power source. The disadvantage of this device is that the battery needs to be replaced regularly, and there is a possibility that the flight electromagnetic lock will fail due to electromagnetic interference.

Method used

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  • Insurance structure and insurance method for airplane cabin door locking state
  • Insurance structure and insurance method for airplane cabin door locking state
  • Insurance structure and insurance method for airplane cabin door locking state

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] See attached picture, such as figure 1 As shown, the safety mechanism in the locked state of the cabin door is composed of a flight air pressure lock 1, a dead bolt 2, a bracket 3, a handle shaft 4, a lock catch 5 and a handle 6. The lock catch 5 and the handle 6 are respectively fixedly connected with the handle rotating shaft 4 . Dead bolt 2 is a lever structure, and the rear end of dead bolt 2 is connected with the piston shaft 10 of flight air pressure lock 1 (as figure 2 Shown) the upper end gap is hinged, and this gap handover is realized by opening the oblong hole on the dead bolt at the hinge; the middle part of the dead bolt is hinged and fixed into a fulcrum with support 3. The support 3 is fixed on the housing of the flight air pressure lock, and the front end of the support is hinged with the middle part of the dead bolt to form a fulcrum.

[0013] Such as figure 2 As shown, the body of the flight air pressure lock 1 is a closed shell structure connecte...

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PUM

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Abstract

The invention provides an insurance structure and insurance method for an airplane cabin door locking state. The insurance structure comprises a cabin door and a handle used for opening the cabin door, wherein the handle is constrained by a flight pneumatic lock, a body of the flight pneumatic lock is of a closed shell structure, the shell structure is divided into a first cavity and a second cavity which are adjacent through a flexible diaphragm, the diaphragm surface inside the first cavity is fixedly provided with a piston shaft, the first cavity is further provided with an air hole communicating with the air pressure inside an airplane cabin, in the second cavity, a precompression spring is arranged between the diaphragm and the cavity wall of the second cavity, the second cavity is further connected with a ventilation pipe, the ventilation pipe communicates with the atmospheric pressure outside the airplane cabin, in addition, a lock tongue capable of constraining the handle of the cabin door is arranged and is of a lever structure, the front end of the lock tongue is matched with a boss of the handle of the cabin door, the rear end of the lock tongue is in clearance hinged joint with the front end of the piston shaft, and the middle portion of the lock tongue is hinged and fixed into one supporting point.

Description

technical field [0001] The invention relates to the aircraft design technology, and further relates to an insurance structure and an insurance method for preventing the aircraft door from being opened during flight and in the locked state of the aircraft door. Background technique [0002] According to the airworthiness regulation CCAR25.783(b), each door of the aircraft must have measures to prevent it from being opened unintentionally during flight. In addition, design precautions must be taken to minimize the possibility of the door being intentionally opened in flight. At present, the flight electromagnetic lock activated by speed is mostly used as an insurance preventive measure for the locked state of the aircraft door to prevent the door from being deliberately opened during flight. The flight electromagnetic lock uses the battery as the power source. The disadvantage of this device is that the battery needs to be replaced regularly, and there is a possibility that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05B13/00E05B51/02B64C1/14
CPCE05B13/002E05B51/02B64C1/1423Y02T50/40
Inventor 郭波魏明阳董珊珊
Owner 中航西飞民用飞机有限责任公司
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