Patent ID: 6180898
Filing Date: 2001-01-30
Classification: B25J,H01H

Abstract:
An emergency stop mechanism for a robot, comprising:switch means which takes an ON position for permitting a robot motion and an OFF position for stopping the robot motion;an operative member which acts on said switch means for switching between the ON and OFF positions;an external-operation-force receiving member elastically supported with a first biasing force, for receiving an external operation force; andconnecting means for elastically connecting said operative member to said external-operation-force receiving member with a second biasing force larger than said first biasing force,wherein said connecting means substantially maintains a relative position of said external-operation-force receiving member and said operative member so that said external operation force acts on said switch means so as to be switched from the OFF position to the ON position when a normal operation force larger than said first biasing force but not larger than said second biasing force is applied to said external-operation-force receiving member, and said connecting means changes the relative position of said external-operation-force receiving member and said operative member so that said external operation force does not act on said switch means so as to be switched from the ON position to the OFF position when a special operation force exceeding said second biasing force is applied to said external-operation-force receiving member.