DESKTOP ROBOTIC ARM JOINT ASSEMBLY, DESKTOP ROBOTIC ARM AND ROBOT

摘要

A desktop robotic arm joint assembly (100), comprising a big arm (110), a small arm (120) and connectors (130) arranged between the big arm and the small arm, wherein the big arm comprises a big arm primary rod (111) and a big arm secondary rod (112), which are arranged opposite each other; the small arm comprises a small arm primary rod (121) and a small arm secondary rod (122), which are arranged opposite each other; a first end of the big arm primary rod is provided with two first hinge portions (111a), which are arranged opposite each other left and right at an interval; two connectors are arranged left and right in parallel and are located between the two first hinge portions; a second hinge portion (121a) is arranged at a first end of the small arm primary rod and is located between the two connectors; the two first hinge portions, the two connectors and the second hinge portion are connected by means of a first hinge shaft (10); and a first end of the big arm secondary rod and a first end of the small arm secondary rod are respectively hinged to two opposite sides of the two connectors. According to the desktop robotic arm joint assembly, the connection strength is enhanced, the matching stability and the driving effect are improved, the support strength is enhanced, and the safety is improved. The present application further relates to a desktop robotic arm comprising the desktop robotic arm joint assembly, and a robot.