The ornamental design for a cleaningbrushhead, as shown and described.
FIG. 1 is a perspective view showing the new design for a cleaning brush head;
FIG. 2 is a top view thereof;
FIG. 3 is a front view thereof, the rear view being a mirror image thereof;
FIG. 4 is a top view thereof; and,
FIG. 5 is a right side view thereof, the left side view being a mirror image thereof.
The dashed broken lines illustrate environmental structure of the brush head and form no part the claimed design while the dash-dot-dash broken line represents the bounds of the claim and forms no part thereof. In addition, the surface shading illustrated in the drawings is provided merely to highlight the contour of design; it is not intended to be illustrative of texture or gloss.