Removable closure device for closing off a space, in particular for an aircraft cabin

A removable closing device for a space for an aircraft cabin, the removable closing device comprising:

• a frame comprising a housing, and
• a movable door capable of moving in translation relative to the frame between a stored position in which the movable door is inside the housing and a deployed position in which the movable door is outside the housing, wherein the removable closing device further comprises a return system comprising a cable reel around which a cable is wound, said cable having ends and being connected from one of the ends to the movable door, and
• a spring system configured to (i) store mechanical energy when the cable is in an unwound state due to a movement of the door towards the deployed position, and
• (ii) to release the mechanical energy so as to automatically return the movable door from the deployed position to the stored position due to a release of the movable door,
• wherein the spring system comprises a spring reel around which a spring leaf is wound at least in part, said spring leaf also being connected to the cable reel,
• wherein said cable reel includes a portion around which the cable is wound and an axially adjacent portion around which a portion of the spring leaf can be wound during mechanical energy storage.