Self-adaptive four-point locking device of rocket ejection seat lifesaving bag

CN119527556AActive Publication Date: 2025-02-28CHINA AVIATION LIFESAVING INST
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Patent Information

Application Number
CN202411474813.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-22
Publication Date
2025-02-28
Estimated Expiration
2044-10-22

AI Technical Summary

Technical Problem

The limiting method of existing rocket ejection seat life bags mainly relies on wire safety, resulting in inconvenience and instability during maintenance and multi-crew member flights.

Method used

An adaptive four-point locking device is designed, including a locking piece, a rear locking assembly, a lock block and a front locking assembly. The four-point fixing and automatic unlocking of the lifesaving bag are achieved by using locking pins, compression springs, rotating shaft parts, limiting parts and torsion springs.

Benefits of technology

This device can effectively fix the lifesaving bag when locked, and automatically unlock it by using reaction force when the human chair is separated, which is easy to use and reduces the complexity of maintenance and the existence of excess.

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Abstract

The invention discloses a self-adaptive four-point locking device of a rocket ejection seat lifesaving bag. The self-adaptive four-point locking device comprises a locking plate, a locking block, a rear locking assembly and a front locking assembly, wherein the locking plate and the locking block are arranged on the lifesaving bag; the rear locking assembly comprises a locking pin and a compression spring, and a groove is formed in the locking plate; the locking block comprises a rotating shaft part and a limiting part, the front locking assembly comprises a rotating block and a torsional spring, and the rotating block comprises a fork-shaped part; during locking, the front end of the locking pin is clamped in the groove to restrain the locking plate, the rotating shaft part is located at the inner corner of the fork-shaped part and limited and cannot move upwards, and the limiting part is located in the fork-shaped part and abuts against the fork-shaped part downwards. When the person and the chair are separated, counter-acting force generated at the moment of parachute shooting can drive the locking plate to release constraint and then move upwards along with the rear end of the lifesaving bag, then the torsion spring drives the rotating block to rotate while the limiting part is driven to rotate around the rotating shaft part till an opening of the fork-shaped part faces upwards, and the locking block is disengaged. The device can fix the life-saving bag in the chair basin at four points, can automatically unlock when a person is separated from the chair, and is convenient to use.
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Citation Information

Patent Citations

  • Rotary lifesaving box cover locking mechanisms

    CN108033019A

  • An airspeed tube unfolding system for rocket projectile seat

    CN112591110A

  • Airplane ejection lifesaving seat simulating device

    CN202838722U

  • Electric unlocking middle-row seat rotating mechanism

    CN216508013U

  • airplane ejection seat

    DE1918359A1