Robot cleaner

  • US 20050021181A1
  • Filed: 07/12/2004
  • Published: 01/27/2005
  • Est. Priority Date: 07/24/2003
  • Status: Active Grant
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First Claim
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1. A robot cleaner which removes a dirt from a cleaning surface while automatically running along a predetermined path, the robot cleaner comprising:

  • a cleaner body having a driving part to drive the robot cleaner and a suction part to remove the dirt;

    a bumper attached to the cleaner body for protecting the cleaner body from a shock caused by a collision with an obstacle during the running operation;

    a bumper supporting unit for elastically supporting the bumper so that the bumper moves between a first position where the bumper is separated from the cleaner body by a predetermined distance and a second position where the bumper retreats from the first position;

    unexpected obstacle sensing means switched on/off according to the displacement of the bumper, and for detecting the appearance of an expected obstacle; and

    a controller for controlling the driving part and the suction part, determining the appearance of the obstacle in response to a signal from the unexpected sensing means, and changing a running direction of the cleaner body to avoid the obstacle.

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