Omnibearing movable spherical robot

An omnibearing spherical robot features that its internal moving mechanism is supported by its spherical casing via at least three single-wheel rolling units and can move relatively to said spherical casing, another single-wheel rolling unit used to make said moving mechanism in rolling contact with said spherical casing is driven by a motor for pushing the spherical casing to do linear movement and by another motor for changing the rolling direction to do omnibeary movement.