Title:
ROBOT CLEANER
Document Type and Number:
WIPO Patent Application WO/2021/201364
Kind Code:
A1
Abstract:
The present invention relates to a robot cleaner. The robot cleaner comprises: a cleaner body equipped with a driving wheel; and a cleaning nozzle mounted inside a downwardly open opening portion in a lower portion of the cleaner body so as to be able to ascend and descend. The cleaning nozzle can be supported by a plurality of ascending/descending guides and a plurality of auxiliary ascending/descending guides so that the cleaning nozzle can ascend and descend relative to the cleaner body according to changes in the height of a cleaning surface on which the cleaner body travels. Accordingly, the cleaning nozzle rises upon being pressed by a compressible floor such as a carpet, thus solving the problem of the cleaning nozzle catching on the cleaning surface. Therefore, travel performance can be improved, and the load on a brush driving part can be reduced.
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Inventors:
HONG WOO (KR)
LEE SANGIK (KR)
LEE SANGIK (KR)
Application Number:
PCT/KR2020/015185
Publication Date:
October 07, 2021
Filing Date:
November 03, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
A47L9/04; A47L7/02
Foreign References:
| KR101932045B1 | 2018-12-24 | |||
| KR20160025392A | 2016-03-08 | |||
| KR101352287B1 | 2014-01-17 | |||
| KR20060038797A | 2006-05-04 | |||
| KR100507928B1 | 2005-08-17 |
Attorney, Agent or Firm:
PARK, Jang-Won (KR)
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