LINK MECHANISM, POSTURE HOLDING DEVICE, AND POSTURE HOLDING DEVICE OF EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a low-cost link mechanism and a posture holding device using the low-cost link mechanism capable of holding a constant posture without using any source of power except human body or much muscle force, and working in a large range.;SOLUTION: The link mechanism includes a joint mechanism to connect a pair of links 105, 109. The joint mechanism is provided with a friction braking mechanism 107 in which a passive element and a body of rotation are facingly arranged so as to allow a relative rotation when larger than a predetermined torque and to deter the relative rotation when smaller than the predetermined torque, a one-direction rotation mechanism 104 having a movable part and a base part to allow the movable part to rotate toward one direction and to deter to rotate toward the other direction, a fixing part to arrange and fix the body of rotation and the base part on a coaxial center, and a fastening mechanism to tightly hold the passive element and the body of rotation along the axial center direction with a predetermined fastening force. One end of a first link is connected to the passive element, and one end of a second link is connected to the movable part.;COPYRIGHT: (C)2009,JPO&INPIT