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Autonomous cleaning device

  • US 9,220,385 B2
  • Filed: 10/24/2011
  • Issued: 12/29/2015
  • Est. Priority Date: 10/25/2010
  • Status: Active Grant
First Claim
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1. An autonomous cleaning device comprising:

  • a main body having an opening;

    a brush unit rotatably provided in the opening of the main body; and

    a blade assembly to guide introduction of dust swept up by the brush unit, wherein the blade assembly comprises;

    a blade having a first part and a second part extended from the first part toward a floor;

    a fixing member disposed above the blade to push at least a portion of the second part of the blade so that an end of the second part of the blade remains in tight contact with the floor; and

    a support member provided at a rear of the blade in a travel direction of the main body to prevent the second part of the blade from being bent in a direction opposite to the travel direction of the main body,wherein;

    the first part is fixed between the fixing member and the support member,the second part is movable within a predetermined range between the fixing member and the support member, anda plurality of contact portions is provided at an end of the second part so that the contact portions contact the floor.

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