To provide a storage device capable of reducing rattling of a movable body than before.

(1)This storage device 10 is provided with a fixed body 20, the movable body 30 openable/closable relative to the fixed body 20, a first gear 40 provided in the fixed body 20, a second gear 50 provided in the movable body 30 and engaged with the first gear 40, and an energizing member 60 energizing the movable body 30 in a direction bringing the second gear 50 close to the first gear 40. (2)The movable body 30 is provided with a first arm part 32 attached to the fixed body 30 rotatably, and a second arm part 33 attached to the first arm part 32 rotatably. The second gear 50 is arranged in the second arm part 33. The energizing member 60 energizes the first arm part 32 relative to the fixed body 20 in the direction bringing the second gear 50 close to the first gear 40. (3)The energizing member 60 energized the movable body 30 relative to the fixed body in the opening direction.