US Patent 10485123 Double-lever handle

A double-lever handle includes a main handle and an assisting handle. The main handle is rotationally mounted to a support body to form a first rotating pair. The assisting handle includes a power arm portion. The power arm portion is rotationally coupled to an end of the main handle away from the first rotating pair to form a second rotating pair. An end of the main handle adjacent to the first rotating pair defines a first latching slot. The main handle rotates about a first latching pin latched in the first latching slot. An end of the power arm adjacent to the second rotating pair defines a second latching slot. The power arm rotates about a second latching pin latched in the second latching slot.