CARTRIDGE-TYPE COSMETIC CONTAINER

摘要

A cartridge-type cosmetic container includes: a main body outer tube to which a cartridge body is attached; a driver body that is rotatable relative to the main body outer tube; a push rod that is propelled by relative rotations of the main body outer tube and the driver body; and a screw spring that is housed in the main body outer tube, and contracts as a result of attaching the cartridge body. The screw spring includes: a first flat plate part whose position is defined in the main body outer tube; a second flat plate part that approaches the first flat plate part by the cartridge body attached; plate spring parts that join both of the flat plate part each other; and a female thread protuberance that is provided on the plate spring parts, and interlocks with a male thread of the push rod as the plate spring parts curve.

主权项

1. A cartridge-type cosmetic container being used with a cartridge body, containing a cosmetic substance, attached thereto, the cartridge-type cosmetic container comprising:
a main body outer tube to which the cartridge body is detachably attached; a driver body that is coaxially attached to the main body outer tube so as to be rotatable relative to the main body outer tube; a push rod with a male thread formed on an outer circumference thereof, the push rod pushing the cosmetic substance in the cartridge body by being propelled by relative rotations of the main body outer tube and the driver body; and a screw spring housed in the main body outer tube, and contracts in an axial direction as a result of attaching the cartridge body, wherein the screw spring includes: a first flat plate part whose position in the axial direction is defined in the main body outer tube; a second flat plate part that approaches the first flat plate part as a result of attaching the cartridge body; a plurality of plate spring parts that join the first flat plate part and the second flat plate part to each other, and curve toward an inner circumferential side when contracting in the axial direction; and a female thread protuberance provided on at least one of the plurality of plate spring parts, and interlocks with the male thread as the plurality of plate spring parts curve.