Passive waist power-assisted exoskeleton based on variable-stiffness composite elastomer

The passive waist-assisting exoskeleton designed with variable stiffness composite elastomers solves the problems of heavy weight, short battery life and poor adaptability of existing exoskeletons, and achieves adaptive assistance and lightweight design, making it suitable for a variety of bending-over work scenarios.

CN122442597APending Publication Date: 2026-07-24明通装备科技集团股份有限公司
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Patent Information

Application Number
CN202610776390.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing lumbar exoskeletons mostly use rigid backplates with active drive structures, which are relatively heavy and cause a strong sense of burden when worn for a long time. They also have weak variable stiffness adjustment capabilities and cannot adapt to the assistance needs of different bending angles. Active models rely on electricity, resulting in limited battery life and high maintenance costs during outdoor operations. Passive models mostly use a fixed stiffness elastic structure, which cannot adaptively adjust stiffness according to the bending angle and work requirements. This leads to excessive assistance at small bending angles, increasing the feeling of restriction, and insufficient assistance at large bending angles, resulting in poor lumbar spine reduction.

Method used

It adopts a variable stiffness composite elastomer design, including a composite elastic back plate, coiled spring and pulley structure. The assist stiffness is adjusted by the bending range to provide adaptive assistance. The overall structure is passive and eliminates the need for external power equipment.

Benefits of technology

It automatically adjusts the assist stiffness according to the bending angle, reducing the feeling of restriction and lowering the risk of lumbar strain. It is lightweight, highly adaptable, reduces maintenance costs, and is suitable for long-term outdoor work.

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Abstract

The invention discloses a passive waist power-assisted exoskeleton based on a variable-stiffness composite elastomer, and relates to the technical field of waist exoskeletons.The passive waist power-assisted exoskeleton comprises shoulder straps and a composite elastic back plate arranged between the two shoulder straps; two groups of adjusting braids arranged on the outer side of the composite elastic back plate are located at the lower ends of the shoulder straps, and adjusting buckles are arranged at the ends, close to each other, of the shoulder straps and the adjusting braids. The passive waist power-assisted exoskeleton based on the variable-stiffness composite elastomer adapts to the power-assisted requirements of different stooping operation scenes, meanwhile, the overall structure adopts a passive design, external power equipment is not needed, the overall weight is lighter, and no extra load is added to a user; the tightness of all parts of the exoskeleton can be rapidly adjusted through the adjusting buckles and the leg wrapping adjusting buckles, the exoskeleton is suitable for being worn by users of different figures, the adaptability is higher, loads borne by waist muscles and the lumbar vertebra can be effectively shared, the risk of waist strain is reduced, the structure is simple, wearing is convenient, and the exoskeleton is suitable for being used in most stooping operation scenes.
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