Device for detecting lift of autonomous mobile robot
First Claim
1. 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.
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Accused Products
Abstract
Disclosed herein is a device for detecting lift of an autonomous mobile robot. The device comprises at least one detection unit to detect lift of the main body of the robot during driving of the robot and to generate and output the lift detection signal, and a controller to control driving of the robot, and to output the driving stop signal to a driving motor after generating a driving stop signal for stopping driving of the robot according to the lift detection signal transmitted from the detection unit. When the robot is lifted by a user, the device stops driving of the motor in response to the lift of the robot, thereby eliminating additional operation of the user to stop driving of the robot as well as protecting the user.
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Citations
16 Claims
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1. A device for detecting lift of an autonomous mobile robot, the device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for detecting lift of an autonomous mobile robot, the device comprising:
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a plurality of fall prevention sensors provided at a lower end of a main body of the autonomous mobile robot that faces a ground surface the autonomous mobile robot is to be positioned on and configured to respectively measure distances between the ground surface and the lower end of the main body of the autonomous mobile robot and to output different distance signals according to the measured distances; a detection unit configured to detect that the autonomous mobile robot is in danger of falling or has been lifted on the ground surface according to the different distance signals and to output a precipice detection signal or a lift detection signal based on the different distance signals; and a controller configured to control a driving operation of the autonomous mobile robot, to generate a driving direction change signal for changing a driving direction of the autonomous mobile robot or a driving stop signal for stopping the driving operation of the autonomous mobile robot according to the precipice detection signal or the lift detection signal output from the detection unit. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An autonomous mobile robot, comprising:
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a main body; a driving motor configured to drive main wheels of the autonomous mobile robot; a groove provided in the main body and including a detection unit; a fixing member configured to move up and down in the groove provided in the main body when the autonomous mobile robot is placed onto and picked up from a ground surface; and an assistant wheel connected to the fixing member and configured to assist the main wheels of the autonomous mobile robot so as to allow the autonomous mobile robot to move with stability and balance but not being driven by the driving motor, wherein when the autonomous mobile robot is placed onto the ground surface, the assistant wheel contacts the ground surface thereby moving the fixing member up in the groove to contact the detection unit in the groove, and when the autonomous mobile robot is lifted up from the ground surface, the assistant wheel does not contact the ground surface thereby moving the fixing member down in the groove such that the fixing member does not contact the detection unit in the groove. - View Dependent Claims (15, 16)
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Specification