Patent ID: 8590415

Claim:
A robotic arm assembly, comprising: a first segment; and a second segment rotatably connected to the first segment; a first driving device and a first transmission mechanism, the first driving device driving the second segment to rotate about a first axis relative to the first segment via the first transmission mechanism; and a second driving device and a second transmission mechanism, the second transmission mechanism comprising a first bevel gear, a second bevel gear meshed with the first bevel gear, a second drive wheel, a transmission shaft, a second action wheel, a second transmission belt, and a restricting member, wherein the second transmission belt connects the second drive wheel to the second action wheel, the second action wheel is fixedly sleeved on the transmission shaft, and the transmission shaft is fixed to the first bevel gear, the transmission shaft forms a shaft shoulder, the first bevel gear is sleeve on the transmission shaft and resists the shaft shoulder, the restricting member is fixed to an end of the transmission shaft and resist the first bevel gear, an output shaft is fixed to the second bevel gear, and the output shaft is capable of rotating about a second axis, each of the second segment, the output shaft, and the second bevel gear defines a guiding hole, and the guiding holes are aligned in the second axis.