An in-situ locking and releasing mechanism and its cooperating connecting device

By controlling the combination of SMA drive spring and force amplification component through temperature control module, and combining the shape memory function of SMPC sleeve, the problems of insufficient locking force and large impact of repeated locking and release devices in aerospace structures are solved, realizing automatic repeated locking and release and increased locking force of aerospace structures in orbit.

CN120288272BActive Publication Date: 2026-07-17HARBIN INST OF TECH
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2025-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing locking and releasing devices have problems in aerospace structures, such as inability to achieve repeated locking, insufficient locking force and large impact, inability to be used in high-precision instruments, and poor versatility.

Method used

The deformation of the SMA drive spring is controlled by a temperature control module. Combined with the force amplification component and the sliding locking module, the automatic contraction and recovery of the SMA drive spring is achieved through temperature control. With the shape memory function of the SMPC sleeve, the automatic and repeated locking and releasing of the aerospace structure in orbit can be realized.

Benefits of technology

It enables automatic and repetitive locking and releasing of aerospace structures in orbit, without the need for additional mechanical devices to increase the locking force. It is suitable for high-precision instruments, improves locking force and versatility, and reduces the difficulty of operation and the workload of ground verification.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120288272B_ABST
    Figure CN120288272B_ABST
Patent Text Reader

Abstract

This invention provides an in-situ locking and releasing mechanism and its cooperating connection device, relating to the field of locking and releasing technology for aerospace structures. It includes a temperature control module, an SMA drive spring, a force amplification component, and a sliding locking module. The force amplification component is connected between the SMA drive spring and the sliding locking module. The SMA drive spring is connected to the temperature control module, which adjusts the temperature to control the extension and contraction state of the SMA drive spring. The sliding locking module includes a slider, a pressure-bearing component, and a return spring. The slider is connected to both the force amplification component and the return spring. The SMA drive spring, through the force amplification component, drives the slider to move away from the pressure-bearing component, causing the return spring to deform for releasing the working element. The slider, under the elastic restoring force of the return spring, moves towards the pressure-bearing component and cooperates with the pressure-bearing component to clamp the working element, thereby locking the working element. This invention has the beneficial effect of enabling large aerospace structures to achieve automatic and repeated in-situ locking and releasing in orbit.
Need to check novelty before this filing date? Find Prior Art