Cleaning Brush

FIG. 1 is a perspective view of a cleaning brush showing my new design; FIG. 2 is another perspective view thereof; FIG. 3 is a front elevational view thereof; FIG. 4 is a rear elevational view thereof; FIG. 5 is a left side elevational view thereof; FIG. 6 is a right side elevational view thereof; FIG. 7 is a top plan view thereof; FIG. 8 is a bottom plan view thereof; and, FIG. 9 is a perspective view thereof, shown in a state of use with environment. In the drawings, the broken lines depict portions of the cleaning brush that form no part of the claimed design.