Patent ID: 8316735
Filing Date: 2012-11-27
Classification: B25J,Y10T

Abstract:
1. An industrial robot comprising: a hollow enclosure rotatably supported by a base; an arm rotatably supported by the hollow enclosure; an additional arm rotatably supported by the arm; and a plurality of drive devices provided in the hollow enclosure, wherein the plurality of drive devices include a first motor and a second motor configured to drive the arm, wherein the plurality of drive devices further include a third motor and a fourth motor configured to drive the additional arm, wherein an output of the first motor is equal to an output of the second motor, and the arm being driven in accordance with a sum of torques produced by the first and second motors, and wherein the first and second motors have parallel rotational axes, wherein the third and fourth motors have parallel rotational axes, and wherein the rotational axes of the first and second motors are spaced apart from the rotational axes of the third and fourth motors in a direction perpendicular to axial directions of the first, second, third and fourth motors.