A refill case that includes a middle plate, the middle plate has a bottomed short cylinder shape that contains a cosmetic item and an outward brim along the periphery, a case body that accepts and keeps the middle plate, and a cap that is fitted around the case body detachably in screw engagement. The refill case also includes a ring-shaped gasket made of a soft, elastic material used to seal the middle plate through tight contact of the brim, and a butting wall disposed on either one of the case body or the cap to butt against the other one at a position in which screw engagement of the cap is complete and in which soft contact deformation of the gasket is controlled within a range of elastic deformation. The gasket is fitted to the cap in an undetachable manner but having play relative to the roof.
1. A refill case comprising:
a middle plate having a shape of a bottomed short cylinder containing a cosmetic item, the middle plate having an outward brim along an upper periphery of the plate;
a case body, which accepts and keeps the middle plate in a storage cylinder under the condition that the brim sits on a top flat rim of the storage cylinder; and
a cap, which is fitted around said the case body detachably in screw engagement, and which is used to seal the middle plate through tight contact of the brim with a ring-shaped gasket made of a soft, elastic material, the gasket being embraced by an underside of a roof and fitted thereto in an undetachable manner but in a state having play relative to the roof,
wherein the gasket includes a ring-shaped main gasket portion, which elastically comes in tight contact with the brim and a ring-shaped fitting portion, the ring-shaped fitting portion being disposed on an inward side of the main gasket portion and used for fitting to the cap,
wherein the gasket is fitted to the cap in an undetachable manner but in a state having play relative to the roof, while the fitting portion is disposed between the roof and a gland, the gland being fixed to the roof, and
wherein a butting wall is disposed on either one of the case body or the cap so as to butt against the other one at a position in which screw engagement of the cap with the case body is complete and in which soft contact deformation of the gasket is controlled within a range of elastic deformation.
2. The refill case according to claim 1 , wherein rubber is used as a soft, elastic material for molding the gasket.
3. The refill case according to claim 1 , wherein the case body has a double wall structure in which a storage cylinder is folded at the top flat rim to form an outward screw cylinder, which is used for the screw engagement with the cap, and wherein a foot portion is disposed at the lower end of the screw cylinder.
4. The refill case according to claim 1 , wherein the butting wall hangs down from underside of the roof and butts against the top surface of the brim of the middle plate, which is stored and held in the case body.
5. The refill case according to claim 1 , wherein the butting wall butts against the top flat rim of the case body.
6. The refill case according to claim 2 , wherein the case body has a double wall structure in which a storage cylinder is folded at the top flat rim to form an outward screw cylinder, which is used for the screw engagement with the cap, and wherein a foot portion is disposed at the lower end of the screw cylinder.
7. The refill case according to claim 2 , wherein the butting wall hangs down from underside of the roof and butts against the top surface of the brim of the middle plate, which is stored and held in the case body.
8. The refill case according to claim 3 , wherein the butting wall hangs down from underside of the roof and butts against the top surface of the brim of the middle plate, which is stored and held in the case body.
9. The refill case according to claim 2 , wherein the butting wall butts against the top flat rim of the case body.
10. The refill case according to claim 3 , wherein the butting wall butts against the top flat rim of the case body.