An opening module is provided to prevent a box from being suddenly extracted by excessive restoring force using a damping unit. An opening module includes a compression unit(300) and a damping unit(400). The compression unit is interposed between an accommodation unit and a box, and provides restoring force in the direction opposite to the accommodation direction of the box when the box is accommodated in the accommodation unit. The damping unit is formed integrally with the compression unit, and alleviates the restoring force generated from the compression unit.
