| 摘要 |
PROBLEM TO BE SOLVED: To provide an industrial robot capable of preventing the change of the tension of a belt spanning pulleys held by an arm even when used in a high temperature environment.SOLUTION: The industrial robot includes: a hand; an arm to a tip of which the hand is rotatably connected; and a drive mechanism for driving at least one of the hand and the arm. The drive mechanism includes: a drive source; pulleys 16, 17 for transmitting motive power of the drive source; and a belt 18 spanning the pulleys 16, 17. The arm includes an arm portion one end of which holds the pulley 16 and the other end of which holds the pulley 17. In the industrial robot, a linear expansion coefficient of the arm portion is greater than a linear expansion coefficient of the belt 18, and the linear expansion coefficient of the belt 18 is greater than at least one of a linear expansion coefficient of the pulley 16 and a linear expansion coefficient of the pulley 17.SELECTED DRAWING: Figure 2 |
