Patent ID: 9597808
Date: 2017-03-21
CPC Classifications: B25J,Y10S

Claim:
1. A joint structure of an industrial robot, the industrial robot comprising: an upper arm; a forearm having a forearm base rotatably connected to the upper arm; and an umbilical member extending from a lateral side of the upper arm and introduced to a lateral side of the forearm base, wherein a motion range of the forearm relative to the upper arm is variable, wherein the umbilical member has a margin of length corresponding to the motion range of the forearm, between the lateral side of the upper and the lateral side of the forearm base, and wherein the umbilical member has a length portion in addition to and adjacent to the margin of length for adjusting an overall length of the margin of length corresponding to a change in the motion range of the forearm, the length portion being contained in or held by the upper arm or the forearm base.