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LAWN MOWER ROBOT

  • US 20180184584A1
  • Filed: 12/28/2017
  • Published: 07/05/2018
  • Est. Priority Date: 01/02/2017
  • Status: Active Grant
First Claim
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1. A lawn mower robot, comprising:

  • an inner body;

    an outer cover configured to surround an outer side of the inner body;

    a plurality of blades rotatably provided on a bottom surface of the inner body to cut grass;

    casters pivotably provided near front sides of the inner body to be pivotable about a rotation shaft;

    wheels rotatably provided near rear sides of the inner body and configured to roll on a surface;

    a driving unit configured to drive the wheels; and

    a sensor unit configured to sense whether one or more of the casters is lifted off the surface to stop rotation of the wheels by the driving unit,wherein the sensor unit includes a drop switch configured to sense a downward movement of one or more of the casters when the one or more of the casters is lifted off the surface to be suspended in air.

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