The invention relates to the improvement of the assembly of a robot of humanoid nature comprising two elements and a joint having at least one degree of freedom in rotation connecting the two elements about an axis, it being possible for the joint to be assembled and dismantled so as to attach and detach the two elements. According to the invention, the robot further comprises: · a casing (30) of circular section fixed to a first of the two elements and extending along an axis (35) substantially parallel to the axis of rotation of the joint, · a cable having two ends (36, 37) of which a first (36) is connected to the first element and a second (37) is connected to the second element. The cable is partially wound up inside the casing (30) about the axis (35) of the casing (30) and extends out of the casing (30) as far as the second end (37) thereof. Between a configuration in which the two elements are detached and a configuration in which the two elements are attached, elasticity of the cable allows same to wind up in the casing (30). The robot is assembled by first of all connecting the cable (30) at the two ends thereof then by mechanically assembling the joint.
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