US 12,447,603 B2
Passive exoskeleton based on energy flow characteristics of foot-ankle complex
Cai-Hua Xiong, Hubei (CN); Tao Wang, Hubei (CN); Di Hu, Hubei (CN); Jie jun yi Liang, Hubei (CN); Yuhao Li, Hubei (CN); Tian-Cheng Zhou, Hubei (CN); and Wen-Bin Chen, Hubei (CN)
Assigned to HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
Filed by HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
Filed on Jul. 13, 2022, as Appl. No. 17/864,338.
Claims priority of application No. 202111371485.1 (CN), filed on Nov. 18, 2021.
Prior Publication US 2023/0150114 A1, May 18, 2023
Int. Cl. B25J 9/00 (2006.01); A61H 1/02 (2006.01); A61H 3/00 (2006.01)
CPC B25J 9/0006 (2013.01) [A61H 1/0266 (2013.01); A61H 2003/007 (2013.01); A61H 2201/1284 (2013.01); A61H 2201/14 (2013.01); A61H 2201/1642 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A passive exoskeleton based on energy flow characteristics of a foot-ankle complex, the passive exoskeleton comprising:
a first passive exoskeleton, wherein the first passive exoskeleton comprises an energy distribution mechanism, a strike-recipient mechanism and a wearing fixing assembly, the energy distribution mechanism is connected to the strike-recipient mechanism, and the energy distribution mechanism is further connected to the wearing fixing assembly;
when in use, the wearing fixing assembly is fixed on a calf of a human body, and the strike-recipient mechanism is fixed on a foot of the human body; the strike-recipient mechanism deforms with a walking gait of the human body and collects a negative work generated during a heel-strike phase; the energy distribution mechanism comprises a ratchet wheel shaft, a left torsional spring, a right torsional spring and a middle guide wheel respectively sleeved on the ratchet wheel shaft, the middle guide wheel is connected to the wearing fixing assembly through an ankle joint power-assisted cord; the ratchet wheel shaft is connected to the strike-recipient mechanism, the strike-recipient mechanism drives the ratchet wheel shaft to rotate, and the ratchet wheel shaft drives the left torsional spring, the right torsional spring and the middle guide wheel to rotate, the left torsional spring and the right torsional spring store an energy transmitted by the strike-recipient mechanism through elastic deformation and release the stored energy through elastic recovery to assist an ankle joint to push-off.