Patent ID: 7434294

Claim:
A suction inlet unit comprising: a suction inlet main body having a suction chamber with a bottom suction inlet, a rotary cleaning body provided rotatably in said suction chamber and having a cleaning member, a front suction inlet formed continuously with said bottom suction inlet in front of said suction inlet main body, and an adjusting mechanism for adjusting at least a first part of a front wall section forming said front suction inlet so as to control a forward protrusion, through said front suction inlet, of at least a part of said rotary cleaning member, wherein when said adjusting mechanism is contacted with and pushed by an obstruction, an opening area of the front suction inlet decreases and said part of said rotary cleaning member protrudes forward through said front suction inlet, and wherein the adjusting mechanism does not adjust at least a second part of the front wall section, the second part comprising a non-rotatable front end surface of a bumper.