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Pressure locking mechanism of passenger plane cabin door

A technology of locking mechanism and cabin door, which is applied in aircraft accessories, building structure, building fastening devices, etc., can solve the problems of large space occupied by flight lock mechanism, long development cycle, complicated pressure lock, etc., to save space and The effect of low weight, small number of parts, and simple mechanism

Active Publication Date: 2015-03-25
AVIC SAC COMML AIRCRAFT
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  • Summary
  • 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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  • Pressure locking mechanism of passenger plane cabin door
  • Pressure locking mechanism of passenger plane cabin door
  • Pressure locking mechanism of passenger plane cabin door

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Such as figure 1 As shown, a pressure locking mechanism for a passenger aircraft cabin door has a vent assembly 1, a connecting rod 2, and a fork member 7 hinged to the cabin door structure, which are combined with the cabin door structure to form a four-bar mechanism; The fork-shaped ends of the fork-shaped piece 7 are respectively provided with an upper roller 3 and a lower roller 8, which form a cam-swing rod mechanism with the cam 4, and the cam 4 is coaxially connected with the door handle; the vent rotating shaft on the vent assembly 1 A torsion spring 6 is provided on 5, one end of the torsion spring 6 acts on the vent assembly 1 and the other end acts on the door structure, the force of the torsion spring 6 makes the 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 contacts the cam 4.

[0018] Such as image 3 As shown, when the pr...

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Abstract

The invention discloses a pressure locking mechanism of a passenger plane cabin door. The pressure locking mechanism is provided with ventilation opening assemblies hinged with a cabin door structure, a connection rod, and a fork-shaped piece hinged with the cabin door structure; a four-rod structure is formed by the ventilation opening assemblies, the connection rod, the fork-shaped piece and the cabin door structure; an upper idler wheel and a lower idler wheel are arranged at the fork-shaped end parts of the fork-shaped piece respectively, and a cam-swing rod mechanism is formed by the fork-shaped piece and a cam; the cam is coaxially connected with a handle of the cabin door; ventilation opening rotary shafts on the ventilation opening assemblies 1 are provided with torsion springs; one end of each torsion spring acts on the corresponding ventilation opening assembly and the other end of each torsion spring acts on the cabin door structure; and the ventilation opening assemblies are prone to open by torsion spring force. The locking mechanism is used for a ventilation opening pressure lock mechanism on the passenger plane cabin door; and the mechanism has the advantages of good safety, high commonality, small occupying space, high part utilization rate and light weight.

Description

Technical field [0001] The invention relates to a cabin door pressure locking mechanism of a passenger aircraft, in particular to a cabin door transmission mechanism applied to a cabin door of a passenger aircraft for linkage opening of vents and locking of the vents under specific conditions. Background technique [0002] For passenger aircraft doors, airworthiness regulations AC25.783 stipulates: There should be measures to prevent the doors from being opened under unsafe pressure. Currently, flight lock mechanisms are commonly used to achieve this requirement. The flight lock mechanism occupies a large 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 models have designed 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, occupying a large space and heavy. Summary of...

Claims

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Application Information

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Patent Type & Authority Applications(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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