Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
The wearable power assist device that assists the knee extension torque generally has a fixed rotation center, which causes a slippage from the viewpoint of the anatomical structure of the body and multiple degrees of freedom. In order to improve it, a brace has been developed in which the rotation center moves with flexion. In this study, the amount of slippage working of these two types of knee brace was estimated by simulation and compared. There are two slippages. The angular gap between the normal knee and the knee brace. The axial slippage of the normal shank. As a result, it was found that the slippage of the rotating center knee brace was smaller, which is considered to be similar to that of a normal knee joint. In addition, when the joint moment was calculated including the effect of slippage, the maximum difference was 11.6% better for the rotational center knee brace. From these things, it is considered that the moving rotational center knee brace is more useful than the fixed rotational center knee brace.
