The invention discloses an
electric control lock based on a shape memory
metal wire. The
electric control lock based on the shape memory
metal wire includes a shell, a lock tongue telescoping in the shell, a reset piece connected to the end of the lock tongue, and the shape memory
metal wire used for driving the
electric control lock to unlock; wherein a
stroke enlargement piece is arranged between the lock tongue and the shape memory metal wire; and when the shape memory metal wire drives the
stroke enlargement piece to generate a displacement, the
stroke enlargement piece drives the lock tongue to generate an enlarged displacement. The stroke enlargement piece is not limited to a lever, a gear, and a
cam. According to the scheme, the driving force of the shape memory metal wire does notdirectly act on the lock tongue, but acts on the stroke enlargement piece; the stroke enlargement piece obtains a smaller displacement, so that the lock tongue obtains a larger displacement; and therefore, the problem described in the description is solved, and the lock also retains the advantages of being compact.