Patent ID: 6125715
Filing Date: 2000-10-03
Classification: B25J,Y10T

Abstract:
A device in a robot arm comprising an assembly rotatable in relation to a part of the arm about an axis extending at an angle to a longitudinal axis of the arm part, said assembly comprising a drive unit and a member driven by said drive unit, at least one cable comprising at least one line for communication of energy for driving and/or control purposes extending between the arm part and the drive unit, said assembly comprising an axle pin rotatably supported relative to the arm part, the cable extending, between the arm part and the drive unit, in a space provided in the assembly, said space comprising a first part space provided in the axle pin, the cable being coiled in screw-line-shape in said first part space, wherein the space in the assembly comprises a second part space, in which the cable extends from the first part space to the drive unit, and wherein the two part spaces are separated from each other in a sealed manner by means of separation element, the separation element and a wall delimiting the space being adapted to sealingly adjoin each other, the second part space being delimited outwardly from the assembly by means of the separation element and at least one cover member provided on the assembly, and the separation element the cable being adapted to sealingly adjoin each other whereas cable penetrates the separation element.