A refrigerator, comprising: a main body having a storage space; and a door provided on the main body for selectively opening or closing the storage space of the refrigerator; an ice maker for making ice, the ice maker being provided on the backside of the door; an ice bank detachably installed on the backside of the door below the ice maker so as to store ice made in the ice maker, the ice bank having an ice-releasing means for transferring the ice to a dispenser provided on the door and an ice-crushing means for crushing the ice; a driving connector provided at one side of the backside of the door and rotated by a driving means for providing a driving force for use in operating the ice-releasing means and the ice-crushing means; and an interlocking connector provided at one side of a backside of the ice bank and rotated in cooperation with the rotation of the driving connector so as to transmit the driving force of the driving means to the ice-releasing means and the ice-crushing means, wherein an installation recess in which the interlocking connector is installed is formed in a lower part of a rear side of the ice bank; wherein a pair of interlocking protrusions protruding from the backside of the door are provided on the driving connector, and a pair of interlocking ribs respectively engaged with the interlocking protrusions are provided on the interlocking connector, whereby upon rotation of the driving connector, the interlocking connector is rotated by the interlocking protrusions and the interlocking ribs that are engaged with each other, wherein one of the pair of interlocking protrusions is engaged with one of the pair of interlocking ribs and another of the pair of interlocking protrusions is engaged with another of the pair of interlocking ribs, characterized in that a circumferential distance between the pair of interlocking ribs is greater than a width of each of the pair of interlocking protrusions viewed in circumferential direction. a main body having a storage space; and a door provided on the main body for selectively opening or closing the storage space of the refrigerator; an ice maker for making ice, the ice maker being provided on the backside of the door; an ice bank detachably installed on the backside of the door below the ice maker so as to store ice made in the ice maker, the ice bank having an ice-releasing means for transferring the ice to a dispenser provided on the door and an ice-crushing means for crushing the ice; the ice bank having an ice-releasing means for transferring the ice to a dispenser provided on the door and an ice-crushing means for crushing the ice; a driving connector provided at one side of the backside of the door and rotated by a driving means for providing a driving force for use in operating the ice-releasing means and the ice-crushing means; and an interlocking connector provided at one side of a backside of the ice bank and rotated in cooperation with the rotation of the driving connector so as to transmit the driving force of the driving means to the ice-releasing means and the ice-crushing means, wherein an installation recess in which the interlocking connector is installed is formed in a lower part of a rear side of the ice bank; wherein a pair of interlocking protrusions protruding from the backside of the door are provided on the driving connector, and a pair of interlocking ribs respectively engaged with the interlocking protrusions are provided on the interlocking connector, whereby upon rotation of the driving connector, the interlocking connector is rotated by the interlocking protrusions and the interlocking ribs that are engaged with each other, wherein one of the pair of interlocking protrusions is engaged with one of the pair of interlocking ribs and another of the pair of interlocking protrusions is engaged with another of the pair of interlocking ribs, characterized in that a circumferential distance between the pair of interlocking ribs is greater than a width of each of the pair of interlocking protrusions viewed in circumferential direction.