Up and down open emergency exit external handle mechanism

Abstract

The invention discloses an outer handle mechanism of an upward-downward opening type emergency exit. A handle shaft is hinged to an outer handle main structure member; a driving crank is fixedly connected to the handle shaft; a crank locking hook is hinged to the outer handle main structure member; the driving crank interacts with the crank locking hook; one end of a connecting rod is connected with the crank locking hook, and the other end of the connecting rod is connected with one end of a crank, the crank is hinged to the outer handle main structure member, and the other end of the crank is connected with the inner side of a secondary turnover plate through an inserting lug connecting rod; the secondary turnover plate is hinged to a primary turnover plate, the primary turnover plate and the secondary turnover plate are kept in relative fixed positions in the hinged position through two torsional springs I; the secondary turnover plate is connected with the outer handle main structure member through two extension springs; and the primary turnover plate is hinged to the outer handle main structure member, and a relative fixed position relation between the primary turnover plate and the outer handle main structure member is kept in the hinged position through two torsional springs II. The problems that in the prior art, the mechanism complexity is high, the weight is high, the functions are incomplete, and the reliability is relatively low are solved.

Description

technical field [0001] The invention relates to the technical field of opening methods of aircraft emergency exits, in particular to an external handle mechanism of an emergency exit opening up and down. Background technique [0002] The outer handle of the emergency exit that opens up and down is a highly functional area. Judging from the existing domestic and foreign models, the outer handle of the up and down opening mainly includes Airbus series and Bombardier C series aircraft. These outer handles have basically the same function, the space layout is very compact, and the design difficulty is relatively high. There are also some models with simpler outer handles, such as [0003] The outer handle of the Q400 boarding door does not integrate multiple functions, but realizes each function through a series of separate mechanisms, which increases the overall weight and design difficulty of the door, and increases the design cost. Contents of the invention [0004] Aimin...

AI Technical Summary

Problems solved by technology

These outer handles have basically the same function, the space layout is very compact, and the design is difficult

There are also some models with simpler outer handles, such as

[0003] The outer handle of the Q400 boarding door does not integrate multiple functions, but realizes each function through a series of separate mechanisms, which increases the overall weight and design difficulty of the door, and increases the design cost

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