Universal joint for robots having rod kinematics comprises a first fork, a second fork each having a base part and fork elements and a bearing pre-tensioning unit for moving the forks about the hinge axis of each fork without play

摘要

Universal joint (1) comprises a first fork (2), a second fork (5) each having a base part (3, 6) and fork elements (4, 7) and a bearing pre-tensioning unit for moving the forks about the hinge axis of each fork without play. Preferred Features: The bearing pre-tensioning unit is formed by a spring element acting on the hinge axis. Each fork element has an opening which is closed by a pressure plate (13) acting on the spring element. A spacer ring (18) is arranged between the pressure plate and the base part.