Robot cleaner

Abstract

A robot cleaner, according to one embodiment of the present disclosure, may comprise: a housing having one side open; a motor disposed in the housing; a shaft configured to be rotatably supported by the driving of the motor; a first bushing fixedly coupled to the shaft, and including a first guide protrusion protruding outward and a first guide groove formed therein; a second bushing at least partially disposed to surround the first bushing, and including a helical second guide groove formed therein, wherein the second bushing is formed such that the first guide protrusion of the first bushing rotates and moves vertically along the second guide groove; a circular rotating member disposed adjacent to the one side and formed to be attachable to and detachable from at least one cleaning pad; and a connecting member connecting the first bushing and the rotating member. When the first bushing rotates in a first direction relative to the second bushing and moves upward for a first time, the rotating member coupled to the first bushing may move toward the housing. After the first upward movement, when the first bushing rotates in the first direction relative to the second bushing and moves upward for a second time, the rotating member is stopped while in contact with the housing, and may be separated from the first bushing.

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