Optimized Design of an RSSR Mechanism for an Unpowered Assistive Aid

Abstract

This paper proposes the use of RSSR space four-bar mechanism to realize the motion and power transmission of a non-powered assistive aid. A three-dimensional modeling, mathematical model analysis and solution function image combination method was proposed to design and analyze the RSSR space four-bar transmission mechanism in this accessory, and the key parameters such as length and rotation angle was optimized. The RSSR mechanism prototype was produced and demonstrated. The results show that the designed RSSR mechanism can effectively transmit the change of the angle of motion to the follower and achieve a better torque transmission effect.