Refill unit for sunscreen and refillable stick container having the same

A refillable stick container configured to be coupled with a refill unit such that the refill unit moving in a front direction is coupled to an upper portion of the refillable stick container, the refillable stick container comprising:

• an elevation shell extending a particular length along a left-right direction and along a vertical direction, the elevation shell defining a shell space therein, the shell space being open at an upper end thereof;
• and
• a holder disposed within the shell space and configured to be movable along the vertical direction,
• wherein the elevation shell comprises:
• a shell body defining the shell space and having an insertion hole defined in a lower surface thereof;
• and
• a shell-side coupler extending downward from a lower surface of the shell body and including a shell ledge defined at a lower portion thereof and protruding in a horizontal direction,
• wherein the holder comprises:
• a holder body disposed within the shell space;
• and
• a holder-side coupler extending downward from a lower surface of the holder body at a position corresponding to a center of the insertion hole,
• wherein a first alignment protrusion is defined on the lower surface of the holder body at a position corresponding to an edge of the insertion hole, the first alignment protrusion extending downward, the holder-side coupler is at an inner side of the first alignment protrusion, and the first alignment protrusion is inserted in the insertion hole when the holder is at a lowest position within the shell space,
• the refillable stick container further comprising:
• a connector including a connector-side coupler and having a through hole defined in an upper surface thereof, the connector-side coupler configured to be coupled to an elevation shell of the refill unit;
• a screw guide configured to be rotatable relative to the connector and including a socket cylinder, the socket cylinder defining a socket space on an inner side thereof and including a socket screw defined on an inner perimeter thereof;
• and
• a shaft including a shaft-side coupler and an extended body, the shaft-side coupler positioned above the through hole and configured to be coupled to a holder of the refill unit, the extended body having at least a portion thereof positioned within the socket space, the extended body including a shaft screw defined on a surface thereof, the shaft screw configured to mate with the socket screw,
• wherein the connector-side coupler extends upward from an upper surface of the connector and includes a connector ledge defined at an upper portion thereof, the connector ledge protruding in a horizontal direction, the shaft-side coupler extends upward from an upper portion of the extended body and includes a shaft ledge defined at an upper portion thereof, the shaft ledge protruding in a horizontal direction, and
• wherein the connector-side coupler is coupled with the elevation shell and the shaft-side coupler is coupled with the holder when the refill unit is moved in the front direction towards the connector.

A refillable stick container comprising:

• an elevation shell extending a particular length along a left-right direction and along a vertical direction, the elevation shell defining a shell space therein, the shell space being open at an upper end thereof;
• a holder disposed within the shell space and configured to be movable along the vertical direction;
• a connector including a connector-side coupler and having a through hole defined in an upper surface thereof, the connector-side coupler configured to be coupled to the elevation shell;
• a screw guide configured to be rotatable relative to the connector and including a socket cylinder, the socket cylinder defining a socket space on an inner side thereof and including a socket screw defined on an inner perimeter thereof;
• and
• a shaft including a shaft-side coupler and an extended body, the shaft-side coupler positioned above the through hole and configured to be coupled to the holder, the extended body having at least a portion thereof positioned within the socket space, the extended body including a shaft screw defined on a surface thereof, the shaft screw configured to mate with the socket screw,
• wherein the elevation shell comprises:
• a shell body defining the shell space and having an insertion hole defined in a lower surface thereof;
• and
• a shell-side coupler extending downward from a lower surface of the shell body and including a shell ledge defined at a lower portion thereof and protruding in a horizontal direction,
• wherein the holder comprises:
• a holder body disposed within the shell space;
• and
• a holder-side coupler extending downward from a lower surface of the holder body at a position corresponding to a center of the insertion hole, the holder-side coupler including a holder ledge defined at a lower portion thereof and protruding in a horizontal direction,
• wherein a first alignment protrusion is defined on the lower surface of the holder body at a position corresponding to an edge of the insertion hole, the first alignment protrusion extending downward, the holder-side coupler is at an inner side of the first alignment protrusion, and the first alignment protrusion is inserted in the insertion hole when the holder is at a lowest position within the shell space,
• wherein the connector-side coupler extends upward from an upper surface of the connector and includes a connector ledge defined at an upper portion thereof, the connector ledge protruding in a horizontal direction, the shaft-side coupler extends upward from an upper portion of the extended body and includes a shaft ledge defined at an upper portion thereof, the shaft ledge protruding in a horizontal direction,
• wherein the holder-side coupler is exposed through the insertion hole below the lower surface of the shell body when the holder is at the lowest position within the shell space, and
• wherein the shell ledge engages the connector ledge to couple the shell-side coupler with the connector-side coupler and the holder ledge engages the shaft ledge to couple the holder-side coupler with the shaft-side coupler when the elevation shell is moved in a front direction towards the connector while the holder is at the lowest position within the shell space.