Patent ID: 7481387

Claim:
An ice-crushing device for refrigerators, comprising: a first set of blades rotatable about a first rotary shaft by a driving force, each blade of the first set of blades comprising a guide slit formed in a side thereof; a second set of blades fitted on a second rotary shaft of a motor for performing a rotating operation; and an actuating lever having a first end extending in the guide slits, the actuating lever being rotated about a second end of the actuating lever when a driving force of a driving unit is transmitted to the actuating lever, to perform a rectilinear reciprocating movement along the guide slits, wherein the second set of blades applies a torque to the first set of blades when the ice-crushing device performs an ice-crushing operation, and an angle between a first reference line, which is a line passing through a center of the actuating lever, and a second reference line, which is a line passing from the first end of the actuating lever through the center of the first rotary shaft, is an acute angle.