The ornamental design for a robotvacuumcleaner, as shown and described.
1. Robot for vacuum cleaner
1.1 is a perspective view of a robot vacuum cleaner, showing our new design;
1.2 is a front elevation view thereof;
1.3 is a rear elevation view thereof;
1.4 is a left-side elevation view thereof;
1.5 is a right-side elevation view thereof;
1.6 is a top plan view thereof; and
1.7 is a bottom plan view thereof.
The broken line shown in figures 1.1 through 1.7 is for the purpose of illustrating portions of the robot vacuum cleaner that forms no part of the claimed design.