An umbilical-member
processing structure for an
industrial robot which includes a
forearm having a tool managing and relaying device and a
wrist with proximal end rotatably connected to the
forearm and having a work tool mounted on the distal end thereof, with an umbilical-member connected to the work tool being disposed to run along the
wrist via the tool managing and relaying device: wherein the
forearm has a first reduction gear which reduces the rotational speed of a driving source to drive the forearm in rotation; the first reduction gear having a
first insertion hole for passing the umbilical-member therein; and wherein the
wrist comprises a first wrist element having a through-path in communication with the
first insertion hole and rotatably connected to the forearm, and a second wrist element having a second
insertion hole in communication with the through-path and rotatably connected to the first wrist element; and wherein a conduit for passing the umbilical-member from one end to the other end is provided in the
first insertion hole of the forearm, in the through-path of the first wrist element, and in the second
insertion hole of the second wrist element; and wherein, with one end of the conduit being inserted in the first
insertion hole so as to permit movement in an axial direction and in a direction of outer circumference of the conduit, the other end of the conduit is held on the second wrist element in
cantilever fashion by a conduit holding member so as to
restrict movement of the conduit in the axial direction thereof.