Refill unit and refillable stick container having the same

A refillable stick container configured to be coupled with a refill unit moving in a first direction, the refillable stick container being configured to receive the refill unit at a side thereof facing a second direction, the refillable stick container comprising:

• a container shaped as a hollow cylinder and forming an interior space on an inner side thereof, the interior space being open in an upward direction;
• a shaft coupled to the container such that the shaft is movable along a vertical direction in relation to the container;
• and
• a connector coupled to an upper portion of the container and having a through-hole defined therein, the through-hole being configured to allow the shaft to pass therethrough,
• wherein the connector comprises:
• a connector base having the through-hole defined therein;
• and
• a connector coupler part extending upward from the connector base around the through-hole to form a coupling space on an inner side thereof, the connector coupler part having an inwardly protruding connector curb defined on an upper portion thereof, the connector coupler part being open in the second direction such that the coupling space is open in an upward direction and in the second direction.

A refillable stick container comprising:

• a lift shell forming a shell space on an inner side thereof, the shell space being open in an upward direction;
• a holder arranged to be movable along a vertical direction within the shell space,
• a container shaped as a hollow cylinder and forming an interior space on an inner side thereof, the interior space being open in an upward direction;
• a shaft coupled to the container such that the shaft is movable along the vertical direction in relation to the container;
• and
• a connector coupled to an upper portion of the container and having a through-hole defined therein, the through-hole being configured to allow the shaft to pass therethrough, the connector being configured to be coupled to the lift shell,
• wherein the lift shell comprises:
• a shell cylinder shaped as a hollow column to form the shell space on an inner side thereof and having an insertion hole defined in a lower surface thereof;
• and
• a shell coupler part extending downward from the lower surface of the shell cylinder around the insertion hole to form an enclosing space on an inner side thereof, the shell coupler part having an outwardly protruding shell curb defined on a lower portion thereof, the shell coupler part being open in a first direction such that the enclosing space is open in a downward direction and in the first direction,
• wherein the holder comprises:
• a holder body arranged within the shell space;
• and
• a holder coupler part extending downwards from the holder body to be inserted through the insertion hole into the enclosing space, the holder coupler part having a holder space defined on an inner side thereof, the holder coupler part having an inwardly protruding holder curb defined on a lower portion thereof, the holder coupler part being open in the first direction such that the holder space is open in a downward direction and in the first direction, and
• wherein the connector comprises:
• a connector coupler part extending upward around the through-hole to form a coupling space on an inner side thereof, the connector coupler part having an inwardly protruding connector curb defined on an upper portion thereof, the connector coupler part being open in the second direction such that the coupling space is open in an upward direction and in the second direction.