Patent ID: 8839689
Filing Date: 2014-09-23
Classification: B25J,Y10S,Y10T

Abstract:
1. A robot arm assembly, comprising: a first robot arm comprising a first sleeve, a mounting member, a bearing rotatably mounted on the mounting member, a first input shaft and a second input shaft, the first input shaft being sleeved on the second input shaft, the second input shaft seated in the first sleeve, the first sleeve comprising a base portion and an assembly portion extending from one end of the base portion, the base portion axially defining a pivot hole, the assembly portion axially defining an assembly hole communicating with the pivot hole, a mounting surface formed at a connecting portion of the assembly hole and the pivot hole, the mounting member detachably mounted on the mounting surface and wholly received in the pivot hole and the assembly hole, the first input shaft rotatably connected to the base portion by the bearing and received in the pivot hole; and a second robot arm rotatably connected to the first robot arm, the second robot arm comprising a second sleeve and an output shaft received in the second sleeve; wherein the first input shaft is connected to the second sleeve via a pair of bevel gears, and drives the second sleeve to swing relative to the first sleeve; the second input shaft is connected to the output shaft via a plurality of bevel gears meshing with each other, and drives the output shaft to rotate relative to the second sleeve.