Patent ID: 7402974

Claim:
A device for detecting lift of an autonomous mobile robot, the device comprising: a mounting member fixed to one end of a main body of the autonomous mobile robot and having a shaft extension portion extending toward a ground surface the autonomous mobile robot is to be positioned on; a sliding pipe connected to a wheel of the autonomous mobile robot and configured to slide vertically along the shaft extension portion of the mounting member; a biasing member disposed within the sliding pipe between an end of the shaft extension portion and an inner surface of the mounting member and configured to provide a biasing force against the shaft extension portion; at least one detection unit disposed on an outside of the sliding pipe; and a detection jaw mounted at one side of the sliding pipe and configured to face the at least one detection unit such that when the autonomous mobile robot is placed on the ground surface, a weight of the autonomous mobile robot pushes the shaft extension portion toward the ground surface such that the biasing member is compressed and the at least one detection unit and the detection jaw are separated from each other, and such that when the autonomous mobile robot is lifted from the ground surface, the biasing member provides the biasing force against the shaft extension portion such that the sliding pipe slides away from the end of the shaft extension portion and the at least one detection unit and the detection jaw communicate or contact each other.