Abstract: The present invention is an improved structure for robotic cleaner primarily comprising of a chassis with plurality of spherical casters fixed to the periphery of bottom deck, a dust collector mounted on the chassis, a lifting actuation mechanism mounted on the chassis that includes a lifting power supply at least to drive two parallel and extendable first swing arms and two parallel and extending second swing arms through a relevant linking device, a first gear train and a second gear train that can pivotally rotate in reverse direction, a drive wheel mounted at the moveable end of the two parallel and extending first swing arms each, a driven wheel mounted at the moveable end of the two parallel and extending second swing arms each, plural advancing power supplies mounted at the middle section of the first swing arms.

Abstract: An integrated light guide plate having axial directional luminance distribution has a substrate. The substrate has a light incident plane, a light emission plane and a bottom surface opposite to the light emission surface. The light incident plane has a plurality of V-cuts formed thereon to serve as prisms. The included angle of the V-cuts is between 85° and 105°. A plurality of pyramidal recesses is formed on the bottom surface of the substrate. Given the formation of the V-cuts and the pyramidal recesses, the integrated light guide plate of the present invention provides an enhanced axial luminous intensity without requiring additional diffuser sheets and prism sheets. Accordingly, the integrated light guide plate has a good directional axial luminance.

Abstract: An integrated light guide plate having axial directional luminance distribution has a substrate. The substrate has a light incident plane, a light emission plane and a bottom surface opposite to the light emission surface. The light incident plane has a plurality of V-cuts formed thereon to serve as prisms. The included angle of the V-cuts is between 85° and 105°. A plurality of pyramidal recesses is formed on the bottom surface of the substrate. Given the formation of the V-cuts and the pyramidal recesses, the integrated light guide plate of the present invention provides an enhanced axial luminous intensity without requiring additional diffuser sheets and prism sheets. Accordingly, the integrated light guide plate has a good directional axial luminance.

Abstract: The present invention is an improved structure for robotic cleaner primarily comprising of a chassis with plurality of spherical casters fixed to the periphery of bottom deck, a dust collector mounted on the chassis, a lifting actuation mechanism mounted on the chassis that includes a lifting power supply at least to drive two parallel & extendable first swing arms and two parallel & extending second swing arms through a relevant linking device, a first gear train and a second gear train that can pivotally rotate in reverse direction, a drive wheel mounted at the moveable end of the two parallel & extending first swing arms each, a driven wheel mounted at the moveable end of the two parallel & extending second swing arms each, plural advancing power supplies mounted at the middle section of the first swing arms.

Abstract: A wall-following moving device consists of a base; a determining drive unit; multiple collision sensing units; two signal transceiver units arranged at the same lateral side of the base parallel to the moving direction of the base for synchronously transmitting and receiving specific signals, and being electrically connected to the determining drive unit; and a moving element mounted to the base and controlled by the determining drive unit to perform various movements. The determining drive unit compares two reflected signals from a wall received separately by two signal transceiver units, and uses the intensity difference of the signals as a basis to control the moving element to orientate the robot parallel to the wall. By an intricate coordination of the collision sensing units, two signal transceiver units, determining drive unit, and the moving element, the distance between the robot and a wall can be precisely determined and controlled.