Patent ID: 7246407
Filing Date: 2007-07-24
Classification: A47L

Abstract:
1. A height adjusting apparatus for a suction brush of an upright vacuum cleaner, comprising: a suction brush body comprised of a brush frame, which has a suction portion for sucking dust at a lower surface thereof and in which a height adjusting shaft can be disposed, the suction brush body having a brush cover for sealing an upper surface of the brush frame except for the suction port; a height adjusting knob comprised of: the height adjusting knob being rotatably disposed in a seating portion of the suction brush body, the seating portion being comprised of a seating member formed in the brush frame and having a seating hole formed through the brush cover, the seating member being partially cut away to form a space for allowing the seating member to be elastically deformed; wherein multiple fixing grooves are formed in a length direction of the seating member to be apart from each other at regular intervals, and each fixing groove has a shape corresponding to the fixing protrusion; the height adjusting knob cam curve portion having a height difference between a starting point and an end point thereof and a plurality of recessed grooves formed between the starting point and the end point; a horizontal height adjusting shaft having a rod member attached to the height adjusting shaft and which extends upwardly and away from the height adjusting shaft, substantially orthogonal to the height adjusting shaft at its attachment point to the height adjusting shaft, to contact the cam curve portion of the height adjusting knob, the rod member causing the height adjusting shaft to be lifted up and down by the rotation of the height adjusting knob; and a brush front wheel rotatably coupled to the height adjusting shaft.