A robot arm has an impact absorption structure for absorbing impact energy
caused by a collision to protect a person from injury and the robot arm
from being damaged. The robot arm includes a plurality of rigid beams
provided at both end portions thereof to define a frame of the robot arm,
and side members made of an elastic material and provided between the
plurality of rigid beams to define an appearance of the robot arm and
absorb the impact energy. Each side member includes a sheet made of a
plastic material, a foam or honeycomb structure, and a fiber reinforced
composite material attached to the sheet.
