Patent ID: 7788763
Filing Date: 2010-09-07
Classification: A47L

Abstract:
1. A vacuum cleaner, comprising: a fan motor that generates air current, including a motor that generates a rotational force and at least one brush fixing portion provided on a peripheral surface thereof and an impeller that rotates via the rotational force generated by the motor; a main body that receives the fan motor; a flexible connecting hose that extends from the main body; an expandable extending tube connected to the connecting hose; a suction nozzle connected to an end of the extending tube and configured to suck outer air therein through; an inner sound absorption member disposed around the fan motor to absorb noise generated by the fan motor; a casing disposed around the inner sound absorption member to enclose the fan motor, the casing being provided with at least one receiving portion being projected outward corresponding to a shape of the brush fixing portion to receive the brush fixing portion therein, wherein a plurality of air holes are provided through the casing and have diameters that are at least substantially identical to each other, the plurality of air holes disposed in a predetermined pattern through at least one peripheral surface of the casing except the receiving portion, the predetermined pattern including a plurality of rows and a plurality of columns, wherein the at least one peripheral surface has a predetermined height and a predetermined width and the air holes are spaced from each other on the at least one peripheral surface, an outer sound absorption member disposed around the casing to absorb the noise generated by the fan motor, wherein the inner sound absorption member is made from a porous material and is disposed adjacent an inner surface of the casing, wherein the outer sound absorption member includes at least one receiving portion that projects outwardly corresponding to the shape of the brush fixing portion, the at least one receiving portion of the outer sound absorption member receiving the at least one receiving portion of the casing, and wherein a first radial distance between the at least one receiving portion of the outer sound absorption member and a central axis passing through the outer sound absorption member is greater than a second radial distance between a surface of the outer sound absorption member adjacent the at least one receiving portion at said first radial distance and said central axis.