ROTATING ARM MECHANISM AND ROBOT

Provided by the present application are a rotating arm mechanism and a robot. The rotating arm mechanism comprises a rotating arm body. The rotating arm body is a cylindrical structure. The rotating arm body has an accommodating cavity that extends to both ends of the rotating arm body. The rotating arm body is a hollowed-out structure. By means of setting the rotating arm body as a hollowed-out structure, the hollowed-out rotating arm body structure not only makes the space of the accommodating cavity larger, but also reduces the weight of the rotating arm body itself, which helps to reduce the overall size and overall weight of the rotating arm mechanism, enhance the structural compactness of the rotating arm mechanism and lighten the weight of the rotating arm mechanism. Since the rotating arm mechanism is applied to the robot, the problem in which robots in the prior art have a large overall size and heavy weight is solved. La présente demande concerne un mécanisme de bras rotatif et un robot. Le mécanism