Abstract: An obstacle-detectable mobile robotic device includes a frame body capable of traveling on a surface, a control circuit mounted to the frame body for controlling the traveling manner and direction of the frame body, and a detection system mounted to the frame body and electrically connected with the control circuit. The detection system has an optical emitter, an optical receiver, and a reflector. The optical emitter emits the light onto the surface, and the light is reflected onto the reflector and then to the optical receiver to be received by the optical receiver. A receiving area generated by the optical receiver on the reflector never overlaps the surface. Accordingly, the obstacle-detectable mobile robotic device can effectively avoid ambient light pollution to have preferable detection potency.

Abstract: A mobile robotic device capable of collision detection includes a base frame, two connecting rods pivotably mounted to the base frame for contact with the switches, two gearboxes slidably mounted at bilateral sides of the base frame respectively, two driving mechanisms connected with the gearboxes, two switches mounted to the base frame for generating signals, two springy members connected with the base frame and the connecting rods for keeping the gearboxes rebounding backward, two wheels mounted to the two gearboxes respectively, and a control system mounted to the base frame for receiving the signals from the switches and driving the driving mechanisms and thus driving clockwise or counterclockwise rotation of the wheels.

Abstract: An obstacle-detectable mobile robotic device includes a frame body capable of traveling on a surface, a control circuit mounted to the frame body for controlling the traveling manner and direction of the frame body, and a detection system mounted to the frame body and electrically connected with the control circuit. The detection system has an optical emitter, an optical receiver, and a reflector. The optical emitter emits the light onto the surface, and the light is reflected onto the reflector and then to the optical receiver to be received by the optical receiver. A receiving area generated by the optical receiver on the reflector never overlaps the surface. Accordingly, the obstacle-detectable mobile robotic device can effectively avoid ambient light pollution to have preferable detection potency.

Abstract: A wheel installation assistant is comprised of a sleeve and an elongated guide section. The sleeve includes an inner diameter which is slightly larger than that of one screw mounted on a vehicle for fitting onto the screw. The sleeve includes a stopping portion inside for contacting against the screw and stopping the screw from further insertion thereinto. The guide section can run through one screw hole of a wheel, having an end connected with the sleeve and the other end extending sidewards for defining a distance from the sleeve in elevation. While applied to the wheel installation, the wheel installation assistant helps the user install the wheel easily and laborsavingly.