Patent ID: 8234949

Claim:
A robot arm, comprising: a first joint, a second joint connected to the first joint, a first support arm connected to the second joint, a third joint connected to the first support arm, a second support arm connected to the third joint, a stopping component mounted in the first support arm, a first motor disposed at the first joint and used for driving the first joint to perform a first degree-of-freedom motion, a second motor and a third motor disposed at the second joint and used for driving the second joint to perform a second degree-of-freedom motion and a third degree-of-freedom motion, a fourth motor and a fifth motor disposed at the third joint and used for driving the third joint to perform a fourth degree-of-freedom motion and a fifth degree-of-freedom motion, and a sixth motor and a seventh motor disposed in the second support arm and providing power for a sixth degree-of-freedom motion and a seventh degree-of-freedom motion; wherein the stopping component comprises a first stopping unit and a second stopping unit that rotate coaxially, the fourth motor drives the first stopping unit to perform reciprocating rotation, the fifth motor drives the second stopping unit to perform reciprocating rotation, the first stopping unit and the second stopping unit drive the third joint to perform the fourth degree-of-freedom motion and the fifth degree-of-freedom motion.