Inner handle mechanism of aircraft emergency hatch

Abstract

The invention provides an inner handle mechanism of an aircraft emergency cabin door. The inner handle mechanism of the aircraft emergency cabin door includes a rotating shaft, an inner handle and a push assembly. The rotating shaft is installed vertically on the inner side of the emergency hatch door, and is connected with the opening movement mechanism of the emergency hatch door; one end of the inner handle is pivotally supported on the rotating shaft, so that the inner handle can move around the rotating shaft relative to the emergency hatch door along the opening direction. The fixed end of one end of the push assembly is fixed on the rotating shaft, and the contact end of the other end can be detachably contacted with the inner handle, so that the inner handle is pivoted from the closed position to the open position. The contact ends of the components come into contact, thereby pushing the push component to rotate about the axis of the shaft and thereby pivot the shaft in the opening direction from the closed position to the open position. The inner handle mechanism conforms to ergonomics, which is convenient for passengers to operate and reduces the time for emergency evacuation. The handle can automatically reset after opening the cabin door.

Description

technical field [0001] The invention relates to an aircraft emergency cabin door, in particular to an inner handle mechanism of the aircraft emergency cabin door. Background technique [0002] 1. The source of the problem: [0003] The new airworthiness regulations of the aircraft do not allow the emergency door on the wing to be thrown, so it is necessary to operate the handle inside the cabin to open the emergency door. The inner handle must be convenient for passengers to operate. After the cabin door is opened, the inner handle must not occupy the clear opening space of the emergency exit. [0004] 2. Existing technology: [0005] For throw-away emergency hatches on the wings, the inner handle design is relatively simple, usually a push type, such as the patent document CN206737652U. However, this handle scheme is only suitable for hatches with simple mechanisms, and cannot meet the needs of lifting and opening-out hatches. door needs. [0006] The inner handle shown...

AI Technical Summary

Problems solved by technology

[0010] The inner handle is directly connected to the internal mechanism through bolts. This method often needs to be drilled through tooling to ensure the matching accuracy requirements of the handle and the internal mechanism's shaft. As a replaceable part of the flight line, the handle needs to meet complete requirements when replacing the inner handle during line maintenance. Requirements for interchangeability, while the method of bolt connection requires on-site drilling, which increases the workload of assembly and poor maintainability;

[0011] The inner handle is directly connected with the pressurization prevention device. Since the rotation angle of the pressurization prevention door is limited, usually less than 90°, the stroke of the inner handle will be limited after the inner handle is directly connected with the pressurization prevention door. After completing a series of actions such as unlocking, unbolting, opening the pressurization prevention door, and lifting the hatch, there will be sudden changes in the handle force, the smoothness of the mechanism is poor, and the operating experience is poor.

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