SAFETY DEVICE FOR INDUSTRIAL ROBOT

摘要

The industrial robot safety mechanism causes an emergency stop on excessive impact against an object but remains unbroken and permits an early return to operating conditions. A box (40) connected between a robot wrist (32) and hand (34) by connections normally used for connecting the hand and wrist contains a switch (48) on its floor (40c) and opposed flexible spring elements (42,44) attached to and extending inwardly from the box walls. A switch actuator (46) in the form of a sphere, etc. suspended between and supported by the spring elements is normally held in a neutral position in which it presses a switch contact (48a) and holds the switch (48) closed. If the hand (34) hits an object, the actuator is displaced and the switch opens and causes an emergency stop.