| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem that electromagnetic waves from a power cable influence on a control signal cable to interfere with the control of a robot, when the power cable and the control signal cable are inserted in a hollow part while bringing those close to each other.SOLUTION: A joint structure of a robot has a hollow part 47a provided between a second arm 50 and a first arm 40 and disposed coaxially with a third rotation axis J3. An inner cylindrical body 58 having an electromagnetic wave shield property is inserted in the hollow part 47a with a play. A power cable PC3 is inserted in the inner cylindrical body 58. A control signal cable C2 is inserted between an outer peripheral surface of the inner cylindrical body 58 and an inner peripheral surface of the hollow part 47a. An influence of electromagnetic waves on the control signal cable can be suppressed.</p> |
