A method for actuating a mechanism imposing a prefixed relative movement between a first and a second rigid link and a hand exoskeleton obtained by utilizing the method. The mechanism includes revolute joints and may be a parallelogram mechanism, a pantograph remote center of rotation mechanism, or a multiple-degrees-of-freedom mechanism. The method provides coaxially arranging at one or more selected revolute joints a number of idle pulleys which are greater than the number of degrees of freedom of the mechanism, the first of the selected revolute joints preferably having its rotation axis fixed with respect to the rigid link; the method also provides arranging an inextensible cable between a traction point and a terminal point on the mechanism or on the second rigid link. By pulling the inextensible cable at the traction point, a multiplied torque is produced which is the sum of singular torques produced by the inextensible cable at each idle pulley, the multiplied torque causing a relative movement between the links.

Категория: Патенты | Нет комментариев »

Комментарии