Patent ID: 7770404

Claim:
An ice making system for a refrigerator, comprising: an ice maker body; an ejector rotatably coupled to the ice maker body, that drops ice pieces made by the ice maker body; an ice bank drawably disposed below the ice maker body, that stores the ice pieces dropped by the ejector; an ice sensing lever that senses an amount of the ice pieces stored in the ice bank; a driving force transmitting device that transmits a rotation force received from the ejector to a lever holding device thereby rotating said lever holding device; wherein the lever holding device elastically supports and couples the ice sensing lever so that the ice sensing lever moves independently from the lever holding device within a preset range when an external force is applied to the ice sensing lever; said lever holding device comprising: a holder rotatably coupled to a housing having said driving force transmitting device therein, wherein one side of the ice sensing lever is fixedly coupled to the holder, and the holder comprises a cylindrical portion rotatably inserted into a gear member, a stopping protrusion provided on an outer circumferential surface of the cylindrical portion, and a through hole into which the cylindrical portion is inserted is formed in the gear member, and a guiding groove disposed at an inner circumferential wall of the through hole; wherein the gear member is coupled to the holder, connected to the driving force transmitting device, rotated by receiving a rotation force from the driving force transmitting device, and the gear rotates the holder and performs a relative motion by a preset angle with respect to the holder and; an elastic member that elastically connects the holder and the gear member with each other.