High-compression-ratio elastic return device, sliding telescoping leg rod module and assistive device

By combining a high compression ratio elastic recovery device and a two-stage sliding mechanism, the problems of large size, heavy weight and insufficient sliding distance of existing power-assist devices are solved, achieving a lightweight and stable walking assistance effect, meeting the needs of human movement, reducing costs and improving reliability.

WO2026123402A1PCT designated stage Publication Date: 2026-06-18SHENZHEN CONCHIN TECH CO LTD

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SHENZHEN CONCHIN TECH CO LTD
Filing Date
2024-12-23
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing hip joint assistive exoskeleton devices are large, heavy, and costly. Furthermore, the sliding mechanism of existing lightweight assistive devices has a short sliding distance, which cannot meet the large sliding distance requirements of the leg pole when walking, climbing stairs, or running. The space for the elastic recovery structure is also insufficient.

Method used

It adopts a high compression ratio elastic recovery device, combined with a two-stage sliding mechanism and a small-sized spring to provide elastic recovery force for large displacement. The high compression ratio elastic recovery is achieved through a gear and reel structure. In the sliding telescopic leg module, the first-stage sliding mechanism slides first, and the second stage maintains a fixed position under the action of the elastic recovery device. The power module is located on the lower abdomen of the front of the human body, and the waist belt is made of flexible material.

🎯Benefits of technology

This invention achieves a lightweight and stable walking assistance device that is small in size, light in weight, and low in cost. The sliding distance meets the needs of human movement, and the power module is compact and fits the body without affecting daily activities, thus improving the reliability and user experience of the device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN2024141283_18062026_PF_FP_ABST
    Figure CN2024141283_18062026_PF_FP_ABST
Patent Text Reader

Abstract

A high-compression-ratio elastic return device (1), a sliding telescoping leg rod module (2) and an assistive device. The high-compression-ratio elastic return device (1) comprises a rack portion (11), a gear portion (12), and a return cable (13). The rack portion (11) comprises a rack (111) and a return spring (112). The gear portion (12) comprises a winding gear (121) and a winding drum (122). One end of the return spring (112) is fixedly arranged on the side of the rack (111), and the other end of the return spring (112) is retractable. The winding gear (121) meshes with the rack (111) and can roll back and forth along the rack (111) by means of meshing. The winding drum (122) is fixedly connected to and concentric with the winding gear (121), the diameter of the winding drum (122) being less than the pitch circle of the winding gear (121). One end of the return cable (13) is fixed on the winding drum (122), wound around the winding drum (122), and then extends to the other end of the return spring (112) and is fixedly connected thereto. When the winding gear (121) rolls in the direction away from the return spring (112), the return spring (112) is stretched; when the winding gear (121) rolls in the direction closer to the return spring (112), the return spring (112) retracts.
Need to check novelty before this filing date? Find Prior Art