Patent ID: 8253363

Claim:
An automatic opening-and-closing lid for a garbage bin comprising: a base member including an opening for a user throwing trash into the bin therefrom and first and second annular flanges; a lid installed to the opening of the base member and able to pivot with respect to the base member; a control installed to the base member and including a power source for power supply, a control panel, a driving member electrically connected to the control panel, a driven member and first and second sensor wires electrically connected to the power source, with the first and second sensor wires respectively disposed in the first and second annular flanges; and a sensing region formed proximal to the first and second sensor wires; wherein while the sensing region receives a static signal, the first and second sensor wires transmit the signal to the control panel and the control panel controls the driving member to drive the driven member to rotate for driving the lid to lifting or closing the opening of the base member, with a drop height defined between the first and second annular flanges, and with a horizontal position of the first annular flange higher than that of the second annular flange.