Aircraft door pressure locking mechanism

A technology for locking mechanisms and hatches, which is applied to aircraft accessories, building structures, and building fastening devices. It can solve the problems of large space occupied by flight lock mechanisms, complicated pressure locks, and large occupied space, so as to save space and The effect of weight, simple structure, and improved utilization of parts

Active Publication Date: 2017-10-13
AVIC SAC COMML AIRCRAFT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flight lock mechanism takes up a lot of space, high cost, and heavy weight. Suppliers are required to participate in the development, and the development cycle is long
A small number of advanced aircraft cabin doors are designed with a vent pressure lock mechanism to replace the function of the flight lock, but the design of the pressure lock is usually more complicated, with many parts, taking up a lot of space and heavy weight

Method used

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  • Aircraft door pressure locking mechanism
  • Aircraft door pressure locking mechanism
  • Aircraft door pressure locking mechanism

Examples

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Embodiment Construction

[0016] Such as figure 1 As shown, a passenger aircraft cabin door pressure locking mechanism has a vent assembly 1 hinged with the cabin door structure, a connecting rod 2, a fork 7 hinged with the cabin door structure together with the cabin door structure to form a four-bar mechanism; The fork-shaped end of the fork 7 is provided with an upper roller 3 and a lower roller 8 respectively, and forms a cam-swing lever mechanism with the cam 4, and the cam 4 is coaxially connected with the hatch handle; 5 is provided with a torsion spring 6, one end of the torsion spring 6 acts on the air vent assembly 1, and the other end acts on the hatch structure, and its torsion spring force makes the air vent assembly 1 have a tendency to open.

[0017] Such as figure 2 As shown, when it is normally opened, the torsion spring 6 drives the vent assembly 1 to open, and the upper roller 3 is in contact with the cam 4 .

[0018] Such as image 3 As shown, when the pressure locking function ...

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Abstract

The invention relates to a pressure locking mechanism for a cabin door of an airliner, comprising a vent assembly hinged to the cabin door structure, a connecting rod, a fork hinged to the cabin door structure and together with the cabin door structure to form a four-bar mechanism; The forked end of the fork is respectively provided with an upper roller and a lower roller, and forms a cam-swing bar mechanism with the cam, and the cam is connected coaxially with the hatch handle; the vent rotating shaft on the vent assembly 1 is provided with a torsion spring, and One end acts on the air vent assembly, and the other end acts on the cabin door structure, and its torsion spring force makes the air vent assembly have a tendency to open. The locking mechanism is used for the air vent pressure lock mechanism on the cabin door of the passenger plane, and the mechanism has the advantages of good safety, high versatility, small occupied space, high utilization rate of parts and light weight.

Description

technical field [0001] The invention relates to a pressure locking mechanism for a cabin door of an airliner, in particular to a cabin door transmission mechanism applied to a cabin door of an airliner for interlocking the opening of an air vent and realizing the locking of the air vent under certain conditions. Background technique [0002] For the cabin door of passenger aircraft, the airworthiness regulation AC25.783 stipulates that there should be measures to prevent the cabin door from being opened under unsafe pressure. At present, the flying lock mechanism is generally used to realize this requirement. The flying lock mechanism takes up a lot of space, is high in cost, and weighs a lot. It needs suppliers to participate in the development, and the development cycle is long. A small number of advanced aircraft cabin doors are designed with a vent pressure lock mechanism to replace the function of the flight lock, but the design of the pressure lock is usually more com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C1/14E05C19/00
Inventor 陶金库马岩由振华马超郑维娟郭晓庆
Owner AVIC SAC COMML AIRCRAFT
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