Assist device and artificial limb
AssigneeBionicM Inc.
InventorsXiaojun SUN, Masaki HANZAWA, Kota TAKIJO
Life of this patent
Estimating the term…
Abstract
A knee coupling may be an assist device for assisting the movements of a knee joint. Specifically, a knee coupling may include: a ball screw that converts the rotation of a screw shaft rotated by a motor to the linear motion of a nut; a linear motion member that is provided coaxially with the screw shaft and moves along the screw shaft along with the nut; an elastic member that is provided coaxially with the screw shaft to intervene between the nut and the linear motion member; and a crank mechanism that converts the linear motion of the linear motion member to rotational motion.
Claims20
An assist device to assist a movement of a joint comprising:
- a ball screw that converts a rotational motion of a screw shaft rotated by a motor into a linear motion of a nut;
- a linear motion member that is provided coaxially with the screw shaft and moves along the screw shaft with the nut;
- an elastic member that is provided coaxially with the screw shaft so as to interpose between the nut and the linear motion member;
- and
- a crank mechanism that converts the linear motion of the linear motion member into the rotational motion.
Dependencies are inferred from the claim text.