US-12616291-B2 - Refillable stick-type content container

US12616291B2US 12616291 B2US12616291 B2US 12616291B2US-12616291-B2

Abstract

A content container includes: a base kit; and a refill kit which is separable from and combinable with the base kit and is filled with the content, wherein the base kit includes: a bottom housing having an inner space; and a screw column arranged within the bottom housing, the refill kit includes: a cylinder which is hollow and has a screw engagement protrusion formed on the inner bottom; and a holder assembly positioned within the cylinder to secure the content, the screw column includes a column body having a male screw portion formed on the outer surface thereof and a nose provided at the top of the column body, when the refill kit and the base kit are combined with each other, the male screw portion of the screw column and the screw engagement protrusion of the cylinder are screw-coupled.

Inventors

David C. CHUNG

Assignees

David C. CHUNG

Dates

Publication Date: 20260505
Application Date: 20240307
Priority Date: 20230721

Claims (10)

1 . A content container comprising: a base kit; and a refill kit which is separable from and combinable with the base kit and is filled with content, wherein the base kit comprises: a bottom housing having an inner space; and a screw column arranged within the bottom housing, wherein the refill kit comprises: a cylinder which is hollow and has a screw engagement protrusion formed on an inner bottom; and a holder assembly positioned within the cylinder to secure the content, wherein the screw column comprises a column body having a male screw portion formed on an outer surface thereof and a nose provided at a top of the column body, wherein when the refill kit and the base kit are combined with each other, the male screw portion of the screw column and the screw engagement protrusion of the cylinder are screw-coupled, and the holder assembly and the nose are connected to each other, and wherein the holder assembly and the screw column are separably combinable, so that the base kit and the refill kit are also separably combined.
2 . The content container according to claim 1 , wherein the holder assembly comprises a locking block having a hollow portion, wherein an outer undercut is formed on an outer peripheral surface of the nose, wherein an inner undercut is provided on an inner peripheral surface of the locking block, and wherein when the refill kit and the base kit are combined, the outer undercut and the inner undercut are engaged with each other.
3 . The content container according to claim 2 , wherein the screw column includes at least one or more groove lines formed on at least one of a top portion of the column body and the nose, wherein a pressing rib protruding outward from a thread groove portion is formed on at least a portion of the male screw portion, and wherein when the screw engagement protrusion passes through the pressing rib, the top portion of the column body and the nose are horizontally deformed.
4 . The content container according to claim 1 , wherein the cylinder includes an insertion groove which is formed at the inner bottom thereof and is opened upwards, wherein at least a portion of the holder assembly is inserted into the insertion groove, and wherein when the cylinder descends in a state in which the refill kit and the base kit are combined with each other, the holder assembly is separated from the insertion groove.
5 . The content container according to claim 1 , wherein the holder assembly includes a holding block that supports the content, wherein the holding block includes a holding head having a through hole formed in at least a portion thereof, and wherein a least a portion of the content passes through the through hole.
6 . The content container according to claim 1 , wherein the holder assembly comprises: a tensioner applying elasticity in a vertical direction; and a holding block supporting the content, wherein the holding block has an insertion space in which the tensioner is accommodated at the bottom thereof, and wherein when the refill kit and the base kit are combined, the tensioner elastically biases at least a portion between the screw column and the holding block.
7 . The content container according to claim 6 , wherein the tensioner comprises: a lower edge portion, at least a portion of which is supported on the column body; an upper edge portion, at least a portion of which supports the holding block; and an elastic portion provided between the lower edge portion and the upper edge portion, and applying elastic restoring force in the vertical direction.
8 . The content container according to claim 7 , wherein the holder assembly further comprises a locking block connected to the nose and supported on the column body, wherein the locking block is inserted into the insertion space of the holding block, wherein the tensioner includes a hollow portion penetrating the lower edge portion, the upper edge portion, and the elastic portion in the vertical direction, and wherein the locking block is positioned within the hollow portion.
9 . The content container according to claim 8 , wherein a displacement space whose width varies according to a vertical displacement of the holding block is formed between an upper end of the insertion space and the locking block.
10 . The content container according to claim 8 , wherein the locking block includes a locking head having guide grooves recessed inwardly at the top, wherein on an upper portion of the insertion space of the holding block, guide protrusions are formed to engage with the guide grooves while the locking head is inserted, and wherein the upper edge portion of the tensioner is in contact with the guide protrusions through the guide grooves.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the priority of Korean Patent Application No. 10-2023-0095001 filed on Jul. 21, 2023, in the Korean Intellectual Property Office, the entire content of which is incorporated herein by reference. BACKGROUND OF THE INVENTION Field of the Invention The present disclosure relates to a refillable stick-type content container. Background Art With the increasing interest in personal appearance, various types of cosmetics are emerging, among which stick-type cosmetics such as lipstick and lip balm are gaining popularity. However, cosmetic containers for such stick-type cosmetics, when the content is fully consumed, have a problem of resource waste as the cosmetic container cannot be reused and are discarded entirely. To overcome the problem, refillable products allowing the reuse of cosmetic containers by refilling the content have been recently introduced. However, existing refillable products require cumbersome manipulation such as users directly holding and rotating or pulling the cosmetic container. So, the existing refillable products deteriorate convenience in manipulation during the refill process. Furthermore, the existing refillable products may decrease absorption due to deteriorated adhesion of the content to the skin during the process of applying the content to the skin, and when excessive force is applied to increase adhesion, it may cause damage to the skin. SUMMARY OF THE INVENTION Accordingly, the present disclosure has been made to solve the above-mentioned problems occurring in the prior arts, and it is an objective of the present disclosure to provide a refillable stick-type content container. The objectives of the present disclosure are not limited to those mentioned above, and other objectives not mentioned herein will be clearly understood by those skilled in the art from the following description. According to an embodiment of the present disclosure, a refillable stick-type content container is provided. The refillable stick-type content container according to an embodiment of the present disclosure includes: a base kit; and a refill kit which is separable from and combinable with the base kit and is filled with the content, wherein the base kit includes: a bottom housing having an inner space; and a screw column arranged within the bottom housing, the refill kit includes: a cylinder which is hollow and has a screw engagement protrusion formed on the inner bottom; and a holder assembly positioned within the cylinder to secure the content, the screw column includes a column body having a male screw portion formed on the outer surface thereof and a nose provided at the top of the column body, when the refill kit and the base kit are combined with each other, the male screw portion of the screw column and the screw engagement protrusion of the cylinder are screw-coupled, and the holder assembly and the nose are connected to each other, and the holder assembly and the screw column are separably combinable so that the base kit and the refill kit are also separably combined. According to an embodiment of the present disclosure, the holder assembly includes a locking block having a hollow portion, an outer undercut is formed on the outer peripheral surface of the nose, an inner undercut is provided on the inner peripheral surface of the locking block, and when the refill kit and the base kit are combined, the outer undercut and the inner undercut are engaged with each other. According to an embodiment of the present disclosure, the screw column includes at least one or more groove lines formed on at least one of the top portion of the column body and the nose, a pressing rib protruding outward from the thread groove portion is formed on at least a portion of the male screw portion, and when the screw engagement protrusion passes through the pressing rib, the top portion of the column body and the nose are horizontally deformed. According to an embodiment of the present disclosure, the cylinder includes an insertion groove which is formed at the inner bottom thereof and is opened upwards, at least a portion of the holder assembly is inserted into the insertion groove, and when the cylinder descends in a state in which the refill kit and the base kit are combined with each other, the holder assembly is separated from the insertion groove. According to an embodiment of the present disclosure, the holder assembly includes a holding block that supports the content, the holding block includes a holding head having a through hole formed in at least a portion thereof, and a least a portion of the content passes through the through hole. According to an embodiment of the present disclosure, the holder assembly includes: a tensioner applying elasticity in the vertical direction; and a holding block supporting the content, the holding block has an insertion space in which the tensioner is accommodated at the bottom thereof, and when the refill ki