| 摘要 |
<p>PURPOSE: To eliminate the twisting of a cord by lengthening one of two helical cords, and contracting the other according to the rotation of a robot arm relative to a support structural body. CONSTITUTION: At least two electric cables 58, 59 are passed through a robot arm 12, and connected to a fixed power supply means, and connected to an electric equipment provided in a movable member in a distal end, and the two cables 58, 59 are formed of two elastically expandable helical cords 57 arranged in the longitudinal direction along each side of the robot arm. One end part of the helical cord 57 is fixed to a support structural body 5 to support the robot arm 12, and the other end part is fixed to a corresponding end part of the robot arm 12. One of the two helical cords 57, 58 is lengthened, and the other is contracted according to the rotation of the robot arm 12 relative to the support structural body 5.</p> |
