Patent ID: 8443619

Claim:
A refrigerator comprising: an ice making unit to make ice pieces, the ice making unit including: an ice making case; a plurality of ice making trays to form ice pieces; an ice separating device mounted on the ice making case to simultaneously separate the ice pieces from the ice making trays; a driving shaft protrudingly formed at an end of each of the ice making trays and connected to the ice separating device; a driven shaft protrudingly formed at the other end of each of the ice making trays; a stopper preventing the driven shaft of each of the ice making trays from being rotated at a predetermined angle or more wherein the ice making trays are twisted during the rotation of the ice making trays, the driving shaft allowing the ice making trays to be rotated a driving shaft guide part and a driven shaft guide part provided at both ends of the ice making case to guide the driving shaft and the driven shaft of each of the ice making trays to be inserted into and removed from the ice making case, respectively, the driving shaft guide part and the driven shaft guide part each having a slot shape open on one end and each of the ice making trays being disposed to be inserted into and removed from the ice making case by way of the driving shaft guide part and the driven shaft guide part.