| 摘要 |
PROBLEM TO BE SOLVED: To provide an arm structure of an industrial robot, decreasing the length and thickness of a rod for transmitting the rotation of a motor to drive a desired part, reducing the whole volume of the arm, and simplifying assembling. SOLUTION: This arm structure of the industrial robot includes: a rod 21 connected to a motor to rotate, thereby rotating a pinion 4 provided at the tip; and wheels 2, 3 meshing with the pinion 4 to rotate, thereby driving the wrist part provided at the tip of a casing 1 of an arm, wherein the wheels 2, 3 are so constructed that the first wheel 2 and the second wheel 3 having the same tooth forms and the same rotation central axis overlap each other. In this case, the flange surface is provided with through holes whose center positions are relatively offset on the substantially same diameter from the rotation central axis and which have different diameters. COPYRIGHT: (C)2007,JPO&INPIT
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