An apparatus comprising: an ice bucket comprising an ice storage portion configured to store ice and configured to be slidably installed in a refrigerator; and a locking device configured to lock the ice bucket, wherein the locking device includes: a projection configured to protrude from an inner side of the refrigerator toward the ice bucket; a receiving portion in at least any one of an upper portion and a lower portion of the ice bucket; an elastic module portion comprising a frame which is installed in the receiving portion and an elastic piece configured to provide an elastic force; a locking flap coupled to the elastic module portion, and configured to be applied with the elastic force from the elastic piece, and comprising a projecting part which is locked to the projection by the elastic force; and a cover part comprising an opening through which the projecting part extends and is characterized in that the elastic piece comprises: a wave part having a wave shape with a first end fixed to the frame and a second end that is a free end, and configured to produce the elastic force; and a plane part forming a flat portion coupled to the wave part toward the free end and configured to apply a force to a portion of the projection part of the locking flap toward the projection. an ice bucket comprising an ice storage portion configured to store ice and configured to be slidably installed in a refrigerator; and a locking device configured to lock the ice bucket, wherein the locking device includes: a projection configured to protrude from an inner side of the refrigerator toward the ice bucket; a receiving portion in at least any one of an upper portion and a lower portion of the ice bucket; an elastic module portion comprising a frame which is installed in the receiving portion and an elastic piece configured to provide an elastic force; a locking flap coupled to the elastic module portion, and configured to be applied with the elastic force from the elastic piece, and comprising a projecting part which is locked to the projection by the elastic force; and a cover part comprising an opening through which the projecting part extends and is characterized in that the elastic piece comprises: a wave part having a wave shape with a first end fixed to the frame and a second end that is a free end, and configured to produce the elastic force; and a plane part forming a flat portion coupled to the wave part toward the free end and configured to apply a force to a portion of the projection part of the locking flap toward the projection. a projection configured to protrude from an inner side of the refrigerator toward the ice bucket; a receiving portion in at least any one of an upper portion and a lower portion of the ice bucket; an elastic module portion comprising a frame which is installed in the receiving portion and an elastic piece configured to provide an elastic force; a locking flap coupled to the elastic module portion, and configured to be applied with the elastic force from the elastic piece, and comprising a projecting part which is locked to the projection by the elastic force; and a cover part comprising an opening through which the projecting part extends and is characterized in that the elastic piece comprises: a wave part having a wave shape with a first end fixed to the frame and a second end that is a free end, and configured to produce the elastic force; and a plane part forming a flat portion coupled to the wave part toward the free end and configured to apply a force to a portion of the projection part of the locking flap toward the projection. a wave part having a wave shape with a first end fixed to the frame and a second end that is a free end, and configured to produce the elastic force; and a plane part forming a flat portion coupled to the wave part toward the free end and configured to apply a force to a portion of the projection part of the locking flap toward the projection.