CN204299345U

CN204299345U - A kind of aircraft door latch hook

Info

Publication number: CN204299345U
Application number: CN201420696384.0U
Authority: CN
Inventors: 高明亮; 王文浩
Original assignee: Xian Aircraft Design and Research Institute of AVIC
Current assignee: Xian Aircraft Design and Research Institute of AVIC
Priority date: 2014-11-19
Filing date: 2014-11-19
Publication date: 2015-04-29
Anticipated expiration: 2024-11-19

Abstract

The utility model belongs to aircraft door lock mechanism design field, relates to a kind of aircraft door latch hook.The lock ring on hatch door is caught in described latch hook bottom, and described latch hook top is with the cylindrical convex shoulder that can be stuck on fuselage bearing, and the cylinder axis along convex shoulder has through hole; In described latch hook bottom, there is a boss in shape face.The utility model aircraft door latch hook provides a kind of aircraft door latch hook corresponding with certain aircraft door latch mechanism, dismantles, installation is simple, power transmission is direct; In latch hook, shape face is through particular design, defines a kind of locking safety precautions, effectively improves the locking security of latch hook.

Description

A kind of aircraft door latch hook

Technical field

The utility model belongs to aircraft door lock mechanism design field, relates to a kind of aircraft door latch hook.

Background technology

Latch hook is the of paramount importance part of aircraft door latch mechanism, exercises the dual-use function of locking and carrying.Original shackle designs is form shown in Fig. 1, Fig. 2, and in latch hook, shape face adopts multi-section circular arc rounding off, and this kind form power transmission is direct, structure simple, and the motor function that can be good at meeting mechanism requires and intensity, rigidity requirement; But because in latch hook, shape face is too mild, the possibility of sliding is there is between latch hook lock ring, in aerial locking situation, inconsistent impact is out of shape by fuselage, hatch door, small angle deflection (Fig. 3) can be there is in latch hook, this deflects the slip exacerbated between latch hook lock ring, and there is potential safety hazard, locking security is poor.

Utility model content

The purpose of this utility model is: provide the aircraft door latch hook that a kind of locking security corresponding with certain aircraft door latch mechanism is high.

The technical solution of the utility model is: a kind of aircraft door latch hook, is characterized by: the lock ring on hatch door is caught in described latch hook bottom, and described latch hook top is with the cylindrical convex shoulder that can be stuck on fuselage bearing, and the cylinder axis along convex shoulder has through hole; In described latch hook bottom, there is a boss in shape face.

The utility model has the advantages that: the utility model aircraft door latch hook provides a kind of aircraft door latch hook corresponding with certain aircraft door latch mechanism, dismantle, installation is simple, power transmission is direct; In latch hook, shape face is through particular design, defines a kind of locking safety precautions, effectively improves the locking security of latch hook.

Accompanying drawing explanation

Fig. 1 is the forward structure schematic diagram of original latch hook;

Fig. 2 is the side direction structural representation of original latch hook;

Fig. 3 is that original latch hook generation low-angle unblanks to rotate engagement schematic diagram that is rear and hatch door lock ring;

Fig. 4 is forward structure schematic diagram of the present utility model;

Fig. 5 is side direction structural representation of the present utility model;

Fig. 6 is the utility model locking security principle schematic;

Wherein, 1-fuselage bearing, 2-lock ring, 3-latch hook.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further.

See Fig. 4, Fig. 5, latch hook top is with the cylindrical convex shoulder that can be stuck on fuselage bearing, and the through hole in convex shoulder is for connecting driving shaft, and driving shaft band moveable lock hook has rotated opens shutoff operation; Because in latch hook, there is local crowning in shape face, so open in the process of closedown at latch hook, the lock ring on hatch door first should arrange on one and propose action, makes it depart from the sports envelope space of boss, avoids the generation of interference situation.

See Fig. 6, locking security principle of the present utility model is as follows, when latch hook turns to a certain angle by initial locking position (Fig. 6 is left) to direction of unblanking, boss contacts with lock ring and produces interaction force F, the position that latch hook is stressed and direction are as shown in Fig. 6 right side, this power produces moment of locking, and stops latch hook to be opened further.Meanwhile, the existence of boss also prevents the relative sliding between latch hook and lock ring, thus ensures locking safety.

After latch hook cuts out, by the engagement with lock ring, bear the load on hatch door, the load on latch hook passes to fuselage bearing by the convex shoulder on latch hook again, and this form power transmission is direct, easy for removal and installation, takes up room little.

Claims

1. an aircraft door latch hook, is characterized by: the lock ring on hatch door is caught in described latch hook bottom, and described latch hook top is with the cylindrical convex shoulder that can be stuck on fuselage bearing, and the cylinder axis along convex shoulder has through hole; In described latch hook bottom, there is a boss in shape face.