A locking device for an aircraft door slide positioning mechanism
By employing a symmetrical locking mechanism structure, and utilizing the synergistic action of components such as gears, splined shafts, and cams, the problem of accidental release of the cabin door slide pre-positioning mechanism is solved, achieving reliable locking and unlocking, ensuring passenger safety, and featuring a compact structure with wide applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AVIC SAC COMML AIRCRAFT
- Filing Date
- 2026-04-17
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, the pre-positioning mechanism of the hatch slide is prone to accidental release, leading to safety issues, and the existing locking device is not reliable enough.
The device employs a symmetrical locking mechanism structure, including a front support assembly, a front rocker arm lock assembly, a front frame, a pre-position hook assembly, a rear rocker arm lock assembly, and a rear support assembly. Through the coordinated action of components such as gears, splined shafts, and cams, it achieves reliable locking and unlocking of the pre-position rod.
It achieves reliable locking of the slide pre-positioning mechanism, prevents accidental release, ensures passenger safety, has a compact structure, wide applicability, and is simple and efficient to operate.
Smart Images

Figure CN122126460A_ABST