Patent Publication Number: US-2022227163-A1

Title: Dual twist structure, object ejecting device including the same, and structure for sealing the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is based on and claims priority from Korean Patent Application No. 10-2021-0007813, filed on Jan. 20, 2021, Korean Patent Application No. 10-2021-0136917, filed on Oct. 14, 2021, Korean Patent Application No. 10-2021-0136912, filed on Oct. 14, 2021, with the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to a dual twist structure, an object ejecting device including the same, and a structure for sealing the same, and more particularly, to a dual twist structure capable of improving the convenience of use by allowing a stick cosmetic, a nib of a writing instrument, or a brush stored in a cylindrical long pen type barrel to be extended to the outside of the barrel or retracted into the barrel by simple manipulation. The present disclosure relates to a dual twist structure, which is used to move an object to be ejected by an accurate distance and at an accurate time, an object ejecting device including the same, and a structure for sealing the same. 
     BACKGROUND 
     In general, women use various cosmetics to make their appearance more beautiful. For example, color cosmetics are used to make the skin beautiful by making the appearance beautiful. 
     The color cosmetics are used to make the skin color uniform and cover defects. The color cosmetics are classified into base makeup and point makeup for partially improving a three-dimensional effect of lips, eyes, nails, or the like. The base makeup includes makeup base, foundation, powder, and the like, and the point makeup includes lipstick, eyeliner, mascara, and the like. 
     Recently, for the purpose of convenience of use and convenience of carriage and storage, a stick cosmetic container has been developed in which a stick cosmetic is mounted at one side of a container, and a user uses the stick cosmetic by raising or lowering the stick cosmetic mounted in the container by rotating the container. 
     The stick cosmetic container includes a housing, a lower cap having a lifting guide hole formed with a screw thread, an operation member configured to move upward or downward in conjunction with a rotation of the lower cap, an accommodation member coupled to the operation member and attached with the stick cosmetic, a protection tube configured to support the upward or downward movement of the accommodation member and store the stick cosmetic, and an upper cap configured to seal the protection tube. 
     When the user intends to use the stick cosmetic, the user holds the protection tube with his/her hand and rotates the housing to eject the stick cosmetic from the protection tube or insert the stick cosmetic into the protection tube. 
     A content ejecting structure of the stick cosmetic container in the related art is configured as a screw structure. However, the user needs to rotate the lower cap and the upper cap multiple times to extend the stick cosmetic container by a desired length in order to use the nib, which causes the user to feel discomfort. 
     Meanwhile, the writing instruments include ball pens, sign pens, highlighters, magic markers, and the like. Most of the writing instruments have detachably fixed sealing caps, and the sealing cap is used to prevent the tip of the writing instrument from being dried. 
     The writing instruments are broadly classified into a stationary writing instrument having a fixed pen tip and using a cap (hereinafter, referred to as a ‘lid’), a rotary (extendable) writing instrument having a tip that is partially extended to the outside along a spiral pipe as a shaft is partially rotated, a knock-type writing instrument having a spring that moves to extend a pen tip as a shaft is partially pushed, and a retractable (slide type) writing instrument having a pen tip that slides to be extended or retracted. 
     The retractable writing instrument is advantageous in that the retractable writing instrument may be used without the inconvenience of having to open or close a separate lid. However, because a pen tip hole through which the pen tip is extended or retracted is simply formed at one end of the writing instrument, the retractable writing instrument can be restrictively applied as a writing instrument using a non-volatile or low-volatile material such as oil-based ink. 
     In contrast, the marker pen, the white pen, the aqueous pen, and the highlighter, which have high volatility, cause the inconvenience of having to open or close the lid. Further, when the pen tip is exposed to the air over a long period of time, the ink or the like is dried up, which shortens or decreases the lifespan of the writing instrument. 
     Therefore, to solve the above-mentioned problem, Korean Patent No. 10-1995-0000776 (WRITING INSTRUMENT WITH DRYING-PREVENTING MECHANISM AND WITHOUT LID) has been proposed. In this well-known structure, a cover for covering a pen tip is opened by tensile force of a rubber band when a push part of a retractable writing instrument is pushed, and the cover is closed and sealed when the push part is pushed once more, thereby preventing the ink from being dried. 
     However, because the tensile force of the rubber band is used, the cover is not quickly opened or closed. Further, there is a problem in that durability needs to be improved, and a sealed state of the cover for temporarily closing the hole is very poor. 
     In addition, Korean Utility Model Registration No. 20-1989-0003644 (WRITING INSTRUMENT WITHOUT CAP) discloses that when a knock part is pushed, a pen tip penetrates an elastic body installed in an inner barrel and is exposed to be used, and when the pen tip returns to an original position as the knock part is released or pushed again, the cut-out portions of the elastic body are sealed by coming into contact with each other to prevent the pen tip from being dried. 
     However, there are problems in that the friction caused by frequent use may plastically deform the cut-out portion of the elastic body and sealability deteriorates due to the frequent friction. 
     As a result, the technologies in the related art have a problem in that it is difficult to accurately adjust a movement distance and an operation time of an object to be ejected in accordance with a length of a housing and an operation of an opening port of the housing that accommodates the object to be ejected. 
     DOCUMENTS OF RELATED ART 
     Patent Documents 
     (Patent Document 0001) Korean Patent No. 10-772596 
     (Patent Document 0002) Korean Patent No. 10-2054317 
     SUMMARY 
     The present disclosure has been made in an effort to provide a dual twist structure having two cam grooves to eject an object by moving the object by an accurate distance at an accurate time. That is, the present disclosure has been made in an effort to provide a dual twist structure capable of adjusting the time required to open or close an opening port through which an object moves inward or outward and adjusting a movement distance by which the object moves in a housing. 
     The present disclosure has also been made in an effort to provide an object ejecting device, in which an operation cap is rotated by simple manipulation, contents and a ball valve move in conjunction with each other, and the contents protrude to the outside of a casing or return into the casing, such that the casing is automatically sealed, and thus the contents accommodated in the casing are protected. The present disclosure has also been made in an effort to provide an object ejecting device, in which a stopper and a magnet prevent a rotation of an operation cap, and a user recognizes the rotation of the operation cap to easily check whether the casing is sealed. 
     The present disclosure has also been made in an effort to provide an object ejecting device capable of preventing a loss of a sealing function or a breakdown even though the object ejecting device is used repeatedly, improving reliability, convenience of use, and marketability of a product, preventing contents to be ejected from being damaged in a casing, preventing substances of the contents from being dried, and storing the contents cleanly. 
     The objects obtained by the embodiments of the present disclosure are not limited to the aforementioned objects, and other objects, which are not mentioned above, will be clearly understood by those skilled in the art from the following description. 
     An exemplary embodiment of the present disclosure provides a dual twist structure including: a housing  100  configured to accommodate a content cartridge  110  therein and having a cam groove  120  provided at a tip thereof; a sleeve  200  coupled to and fitted with the content cartridge  110  and having a cam protrusion  210  formed on an outer portion thereof; and a tubular operation body  300  having a twist cam groove  310  into which the cam protrusion  210  is slidably fitted, and a cam pin  320  protruding and configured to move to a position misaligned with the twist cam groove  310  by being guided by the cam groove  120 , in which the dual twist structure has the two cam grooves. 
     In addition, the content cartridge  110  and the sleeve  200  may be integrated. 
     In addition, the cam groove  120  may include an inclined portion  121  and a straight portion  122  which are capable of adjusting a movement time and a movement distance, and the twist cam groove  310  may include a straight portion  311  and an inclined portion  312  which are capable of adjusting a movement time and a movement distance. 
     In addition, motion distances of the sleeve  200  and the content cartridge  110  vary depending on inclination angles of the inclined portion  121  and the inclined portion  312 . 
     In addition, a guide protrusion  113  and a guide groove  140  may be respectively provided on the housing  100  and the content cartridge  110  so that the housing  100  and the content cartridge  110  may be in contact with each other and move. 
     Another exemplary embodiment of the present disclosure provides an object ejecting device including any one of the dual twist structures disclosed in the above-mentioned embodiment of the present disclosure. 
     In addition, the object ejecting device may include: a ball valve  400  having a ball shape and including: center pins  410  protruding outward from a center position thereof; and eccentric pins  420  protruding from eccentric positions spaced apart from the center pins  410  at a distance and configured to be fitted and assembled with shaft holes  331  of arms  330 , and the ball valve  400  may open or close a passageway by controlling a position of a passing hole  430  when the tubular operation body  300  simultaneously rotates in a twist direction and moves forward or rearward by being guided by the cam groove  120 ; and an operation cap  500  having a guide groove  510  into which the cam pin  320  of the tubular operation body  300  is slidably fitted. 
     Still another exemplary embodiment of the present disclosure provides an object ejecting device including: a housing  100  having a cylindrical hollow shape for accommodating a content cartridge  110  therein and having a cam groove  120  formed at a tip thereof; a sleeve  200  having a cylindrical hollow shape into which the content cartridge  110  is fitted and coupled and having a cam protrusion  210  formed integrally on an outer portion thereof; a tubular operation body  300  having a twist cam groove  310  into which the cam protrusion  210  of the sleeve  200  is slidably fitted, a cam pin  320  protruding and configured to move to a position misaligned with the twist cam groove  310  by being guided by the cam groove  120  of the housing  100 , and arms  330  extending toward the tip portion and having shaft holes  331 ; a ball valve  400  having a ball shape and including: center pins  410  protruding outward from a center position thereof; and eccentric pins  420  protruding from eccentric positions spaced apart from the center pins  410  at a distance and configured to be fitted and assembled with the shaft holes  331  of the arms  330 , in which the ball valve  400  opens or closes a passageway by controlling a position of a passing hole  430  when the tubular operation body  300  simultaneously rotates in a twist direction and moves forward or rearward by being guided by the cam groove  120 ; and an operation cap  500  having a cylindrical hollow shape and is rotatably coupled to the tip of the housing  100  and having a guide groove  510  into which the cam pin  320  of the tubular operation body  300  is slidably fitted. 
     In addition, catching grooves  130  may be provided in the tip portion of the housing  100  and catching protrusions  520  caught by the catching grooves  130  may be provided in the operation cap  500  to allow the housing  100  and the operation cap  500  to rotate freely and prevent the separation between the housing  100  and the operation cap  500 , a guide protrusion  113  of the content cartridge  110  may be fitted with and assembled to the guide groove  140  recessed in a direction of a center of an axis at a center in the housing  100 , and a coupling protrusion  112  may protrude at a position spaced apart from the guide protrusion  113  and be fitted with and coupled to the coupling groove  220  provided in the sleeve  200 . 
     In addition, a ball seat  440  configured to support a rotation of the ball valve  400  may be installed in a tip portion of the operation cap  500 , and a support ring  450  may be installed at a position of an installation part  530  of the operation cap  500  so that the center pins  410  of the ball valve  400  are fitted into the pin holes  451 , and the ball valve  400  is turned about the center pins  410 . 
     In addition, a spring  460  configured to maintain a pressing force on the ball valve  400  may be installed between the support ring  450  and the housing  100 , and a notch groove  332  may be recessed at one end of the arm  330  so that the arm  330  is freely bent. 
     In addition, the cam groove  120  may include an inclined portion  121  and a straight portion  122 , and the twist cam groove  310  may include a straight portion  311  and an inclined portion  312 . 
     Still yet another embodiment of the present disclosure provides an object ejecting device including: a housing  10  having a cam groove  120  provided at a tip thereof, having a guide groove  140  provided therein, and configured to accommodate therein a content cartridge  110  having a guide protrusion  113 ; a sleeve  200  having a cam protrusion  210  formed integrally with an outer portion thereof and fitted with and coupled to the content cartridge  110 ; a tubular operation body  300  having a twist cam groove  310  into which the cam protrusion  210  is slidably fitted, a cam pin  320  protruding and configured to move to a position misaligned with the twist cam groove  310  by being guided by the cam groove  120  of the housing  100 , and arms  330  extending toward the tip portion and having shaft holes  331 ; and a ball valve  400  having a ball shape and including: center pins  410  protruding outward from a center position thereof; and eccentric pins  420  protruding from eccentric positions spaced apart from the center pins  410  at a distance and configured to be fitted and assembled with the shaft holes  331  of the arms  330 , in which the ball valve  400  opens or closes a passageway by controlling a position of a passing hole  430  when the tubular operation body  300  simultaneously rotates in a twist direction and moves forward or rearward by being guided by the cam groove  120 . 
     In addition, the object ejecting device may further include a fixing unit  600  disposed at one or both of an end of the cam groove  120  and an end of the twist cam groove  310 . 
     In addition, the fixing unit  600  may include a first stopper  610  formed to be convex toward the inside of the cam groove  120  and disposed on at least one of one end and two opposite ends of the cam groove  120 , and restrict a movement of the cam pin  320  after the cam pin  320  moves along the cam groove  120  and is fitted with and coupled to the first stopper  610 . 
     In addition, the fixing unit  600  may include a second stopper  620  formed to be convex toward the inside of the twist cam groove  310  and disposed on at least one of one end and two opposite ends of the twist cam groove  310 , and restrict a movement of the cam protrusion  210  after the cam protrusion  210  moves along the twist cam groove  310  and fitted with and coupled to the second stopper  620 . 
     In addition, the fixing unit  600  may include a first magnet  630  disposed on at least one of one end and two opposite ends of the cam groove  120 , and restrict a movement of the cam pin  320  by means of a magnetic force of the first magnet  630  when the cam pin  320  moves along the cam groove  120 . 
     In addition, the fixing unit  600  may include a second magnet  640  disposed on at least one of one end and two opposite ends of the twist cam groove  310 , and restrict a movement of the cam protrusion  210  by means of a magnetic force of the second magnet  640  when the cam protrusion  210  moves along the twist cam groove  310 . 
     In addition, the content cartridge  110  and the sleeve  200  may be integrally manufactured. 
     In addition, the object ejecting device may include an operation cap  500  rotatably coupled to a tip of the housing  100  and having a guide groove  510  into which the cam pin  320  of the tubular operation body  300  is slidably fitted. 
     In addition, catching grooves  130  may be provided in the tip portion of the housing  100  and catching protrusions  520  caught by the catching grooves  130  may be provided in the operation cap  500  to allow the housing  100  and the operation cap  500  to rotate freely and prevent the separation between the housing  100  and the operation cap  500 , a guide protrusion  113  of the content cartridge  110  may be fitted with and assembled to the guide groove  140  recessed in a direction of a center of an axis at a center in the housing  100 , a coupling protrusion  112  may protrude at a position spaced apart from the guide protrusion  113  and be fitted with and coupled to the coupling groove  220  provided in the sleeve  200 , a plurality of grooves  115  may be formed in the tip portion of the content cartridge  110 , and protrusions  205  may be provided on the sleeve  200  and coupled to the grooves  115 . 
     In addition, a ball seat  440  configured to seal the ball valve  400  may be installed in a tip portion of the operation cap  500 , and a support ring  450  may be installed at a position of an installation part  530  of the operation cap  500  so that the center pins  410  of the ball valve  400  are fitted into the pin holes  451 , and the ball valve  400  is turned about the center pins  410 . 
     In addition, the support ring  450  may be manufactured integrally with the operation cap  500 . 
     In addition, a spring  460  configured to maintain a pressing force on the ball valve  400  may be installed between the support ring  450  and the housing  100 . 
     In addition, the spring  460  may be manufactured integrally with a tip of the housing  100 . 
     In addition, the cam groove  120  may include an inclined portion  121  and a straight portion  122 , and the twist cam groove  310  may include a straight portion  311  and an inclined portion  312 . 
     In addition, a guide protrusion  113  may be provided on the housing  100 , and a guide groove  140  may be provided in the content cartridge  110 . 
     In addition, a notch groove  332  may be recessed at one end of the arm  330  so that the arm  330  is freely bent. 
     Another further embodiment of the present disclosure provides an object ejecting device including: a housing  100  having a cam groove  120  provided at a tip thereof, having a guide groove  140  provided therein, and configured to accommodate therein a content cartridge  110  having a guide protrusion  113 ; a sleeve  200  fitted with and coupled to the content cartridge  110  and having a cam protrusion  210  formed integrally with an outer portion thereof; and a tubular operation body  300  including: a straight portion  311  and an inclined portion  312 ; a twist cam groove  310  into which the cam protrusion  210  is slidably fitted; and a cam pin  320  protruding and configured to move to a position misaligned with the twist cam groove  310  by being guided by the cam groove  120 . 
     In addition, the content cartridge  110  and the sleeve  200  may be integrally manufactured. 
     In addition, a guide groove  140  may be formed in the content cartridge  110 , and a guide protrusion  113  may be formed on the housing  100  so as to be in contact with the guide groove  140 . 
     According to the dual twist structure and the object ejecting device according to the present disclosure, the sleeve and the content cartridge simultaneously move when the tubular operation body moves, and the sleeve and the content cartridge further move when the tubular operation body is stopped, such that the motion distances are increased. Therefore, in comparison with the single twist structure, it is possible to increase the motion distance and the operation distance of the content cartridge. 
     In addition, since the content cartridge is stopped without operating for the operation time for which the ball valve is opened, it is possible to prevent a collision of the nib or the brush. Further, since the nib or the brush operates after the ball valve is opened, it is possible to implement the dual twist structure with the single operation. 
     In addition, the dual twist structure may be used to accurately adjust the movement distance and the movement time for which the object is extended to the outside of the casing or retracted into the casing as the contents and the ball valve operate in conjunction with the operation cap. 
     In addition, the operation cap may be rotated by simple manipulation, the contents and the ball valve move in conjunction with each other, and the contents protrude to the outside of the casing or return into the casing, such that the casing is automatically sealed, and thus the contents accommodated in the casing are protected. Further, the stopper and the magnet may prevent the rotation of the operation cap, and the user may recognize the rotation of the operation cap to easily check whether the casing is sealed. 
     In addition, it is possible to prevent a loss of a sealing function or a breakdown even though the object ejecting device is used repeatedly, improving reliability, convenience of use, and marketability of a product, preventing contents to be ejected from being damaged in a casing, preventing substances of the contents from being dried, and storing the contents cleanly. 
     The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a front view illustrating shapes of a dual twist structure, an object ejecting device including the same, and a structure for sealing the same according to an embodiment of the present disclosure. 
         FIG. 2  is an exploded perspective view of the present disclosure. 
         FIG. 3  is an exploded perspective view illustrating enlarged main components of the present disclosure. 
         FIG. 4  is an exploded front view of  FIG. 2 . 
         FIG. 5  is an exploded perspective view illustrating the partially cutaway main components of the present disclosure. 
         FIG. 6  is a cross-sectional view illustrating an entirely assembled state of the present disclosure. 
         FIG. 7  is a cross-sectional view illustrating the enlarged main components illustrated in  FIG. 6 . 
         FIG. 8  is an enlarged cross-sectional view illustrating a state in which an operation cap is rotated and a content cartridge and a nib part are moved forward in a state illustrated in  FIG. 6 . 
         FIG. 9  is an enlarged cross-sectional view illustrating a state in which a right-angled part is cut in a state illustrated in  FIG. 7 . 
         FIG. 10  is an enlarged cross-sectional view illustrating a state in which the operation cap is rotated and the content cartridge and the nib part are moved forward in a state illustrated in  FIG. 7 . 
         FIG. 11  is a view for explaining an internal configuration in which a housing and the operation cap are cut immediately before the operation cap is manipulated. 
         FIG. 12  is a view for explaining an internal configuration in which the housing and the operation cap are cut in an intermediate operating state when the operation cap is manipulated. 
         FIG. 13  is a view for explaining an internal configuration in which the housing and the operation cap are cut in a state in which the operation cap is manipulated and the operation is completed. 
         FIG. 14  is a perspective view illustrating a state illustrated in  FIG. 11 . 
         FIG. 15  is a perspective view illustrating a state illustrated in  FIG. 12 . 
         FIG. 16  is a perspective view illustrating a state illustrated in  FIG. 13 . 
         FIG. 17  is a perspective view illustrating a state in which a tubular operation body and a ball valve are connected and a passing hole of the ball valve is closed. 
         FIG. 18  is a perspective view illustrating a state in which the tubular operation body and the ball valve are connected, the ball valve is turned, and the passing hole is opened. 
         FIG. 19  is a front view of  FIG. 17 . 
         FIG. 20  is a front view of  FIG. 18 . 
         FIGS. 21A and 21B  are cross-sectional views illustrating a fixing unit according to another embodiment of the present disclosure. 
         FIGS. 22A and 22B  are cross-sectional views illustrating a fixing unit according to still another embodiment of the present disclosure. 
         FIGS. 23 and 24  are views illustrating an embodiment of rotational motions of the operation cap and the tubular operation body. 
     
    
    
     DETAILED DESCRIPTION 
     In the following detailed description, reference is made to the accompanying drawing, which forms a part hereof The illustrative embodiments described in the detailed description, drawing, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. 
     The objects, other objects, features, and advantages of the present disclosure will be easily understood with reference to the following exemplary embodiments associated with the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments to be described below and may be specified as other aspects. 
     For example, a dual twist structure, an object ejecting device including the same, and a structure for sealing the same disclosed in the present disclosure may be sufficiently used not only for cosmetics or writing instruments disclosed in the background art, but also in other fields. 
     On the contrary, the embodiments introduced herein are provided to make the disclosed content thorough and complete, and sufficiently transfer the spirit of the present disclosure to those skilled in the art. 
     The exemplary embodiments described and illustrated herein also include complementary exemplary embodiments thereof. 
     Unless particularly stated otherwise in the present specification, a singular form also includes a plural form. The term “comprise” and/or “comprising” used in the specification does not exclude existence or addition of one or more other constituent elements in addition to the mentioned constituent element. 
     Hereinafter, the present disclosure will be described in detail with reference to the drawings. To describe the following specific exemplary embodiments, the various particular contents are proposed to more specifically describe the present disclosure and help understand the present disclosure. However, those who are knowledgeable in this field enough to understand the present disclosure may recognize that the present disclosure may be used without the various particular contents. It is noted that the description of the parts, which are commonly known and are not greatly related to the present disclosure, will be omitted in some instances in order to avoid unnecessary confusion when describing the present disclosure. 
       FIG. 1  is a front view illustrating shapes of a dual twist structure, an object ejecting device including the same, and a structure for sealing the same according to an embodiment of the present disclosure,  FIG. 2  is an exploded perspective view of the present disclosure,  FIG. 3  is an exploded perspective view illustrating enlarged main components of the present disclosure,  FIG. 4  is an exploded front view of  FIG. 2 ,  FIG. 5  is an exploded perspective view illustrating the partially cutaway main components of the present disclosure,  FIG. 6  is a cross-sectional view illustrating an entirely assembled state of the present disclosure,  FIG. 7  is a cross-sectional view illustrating the enlarged main components illustrated in  FIG. 6 ,  FIG. 8  is an enlarged cross-sectional view illustrating a state in which an operation cap is rotated and a content cartridge and a nib part are moved forward in a state illustrated in  FIG. 6 ,  FIG. 9  is an enlarged cross-sectional view illustrating a state in which a right-angled part is cut in a state illustrated in  FIG. 7 ,  FIG. 10  is an enlarged cross-sectional view illustrating a state in which the operation cap is rotated and the content cartridge and the nib part are moved forward in a state illustrated in  FIG. 7 ,  FIG. 11  is a view for explaining an internal configuration in which a housing and the operation cap are cut immediately before the operation cap is manipulated,  FIG. 12  is a view for explaining an internal configuration in which the housing and the operation cap are cut in an intermediate operating state when the operation cap is manipulated,  FIG. 13  is a view for explaining an internal configuration in which the housing and the operation cap are cut in a state in which the operation cap is manipulated and the operation is completed,  FIG. 14  is a perspective view illustrating a state illustrated in  FIG. 11 ,  FIG. 15  is a perspective view illustrating a state illustrated in  FIG. 12 , FIG. 
       16  is a perspective view illustrating a state illustrated in  FIG. 13 ,  FIG. 17  is a perspective view illustrating a state in which a tubular operation body and a ball valve are connected and a passing hole of the ball valve is closed,  FIG. 18  is a perspective view illustrating a state in which the tubular operation body and the ball valve are connected, the ball valve is turned, and the passing hole is opened,  FIG. 19  is a front view of  FIG. 17 ,  FIG. 20  is a front view of  FIG. 18 ,  FIGS. 21A and 21B  are cross-sectional views illustrating a fixing unit according to another embodiment of the present disclosure, and  FIGS. 22A and 22B  are cross-sectional views illustrating a fixing unit according to still another embodiment of the present disclosure. 
     As illustrated in  FIGS. 1 to 22 , the present disclosure relates to a dual twist structure, an object ejecting device including the same, and a structure for sealing the same. The object ejecting device includes a housing  100 , a sleeve  200 , a tubular operation body  300 , a ball valve  400 , and an operation cap  500 . When the operation cap  500  rotatably installed at a tip of the housing  100  is rotated, the ball valve  400  is opened, and the sleeve and the tubular operation body  300  operate in conjunction with each other, such that a content cartridge  110  accommodated in the housing  100  may be ejected to the outside. 
     In more detail, a distance by which the tubular operation body  300  is moved by a cam groove  120  is referred to as a first movement distance L 1 , and a distance by which the content cartridge  110  is moved by a twist cam groove  310  is referred to as a second movement distance L 2 . When a cam pin  320  of the tubular operation body  300  operates by the first movement distance L 1  which is the distance by which the cam pin  320  is moved by an inclined portion  121  of the cam groove  120  provided in the housing  100 , a straight portion  311  of the cam groove  310  allows the cam protrusion  210  to rotate by being guided by the straight portion  311  but stop performing the rectilinear motion, i.e., stop rectilinearly moving. 
     Thereafter, when the cam pin  320  reaches a straight portion  122  of the cam groove  120 , the straight portion  122  allows the tubular operation body  300  to continuously rotate but stop performing the rectilinear motion, i.e., stop rectilinearly moving. At this time, the cam protrusion  210  is rotated and rectilinearly moved by an inclined portion  312  of the cam groove  310 , such that the cam protrusion  210  may move by the second movement distance L 2 . 
     That is, motion distances of the sleeve  200  and the content cartridge  110  vary depending on inclination angles of the inclined portion  121  and the inclined portion  312 . 
     In addition, when the operation cap  500  rotates reversely, the above-mentioned operation is performed in reverse order. 
     In addition, when the operation cap  500  is rotated, the content cartridge  110  stops moving first when the ball valve  400  is opened by the movement by the first movement distance L 1 . Then, after the operation cap  500  stops rotating in the state in which the ball valve  400  is opened, the content cartridge  110  moves by the second movement distance L 2  and protrudes to the outside of the casing. When the operation cap  500  is rotated reversely, the content cartridge  110  moves by the second movement distance L 2  first, and then the operation cap  500  is closed and sealed by the movement by the first movement distance L 1 . 
     As a result, according to the present disclosure, when the tubular operation body moves, the sleeve and the content cartridge simultaneously move. The sleeve and the content cartridge further move even though the tubular operation body is stopped, which increases the motion distance. Therefore, in comparison with a single twist structure, the motion distance and the operation distance of the content cartridge are increased. Further, during the operation time for which the ball valve is opened, the content cartridge is stopped without operating, which prevents a collision of a nib or a brush. Further, because the nib or the brush operates after the ball valve is opened, the dual twist structure may be implemented by the single operation. 
     Meanwhile, in the state in which the ball valve  400  is closed, it is possible to prevent volatile ink for a writing instrument stored in the content cartridge  110  or contents such as a stick cosmetic, which may be discolored or degenerated, from being dried, discolored, and degenerated. 
     The housing  100  has a cylindrical hollow shape to accommodate therein the content cartridge  110  having a small diameter and a long length and has the cam groove  120  formed at the tip thereof. 
     The cam protrusion  210  is assembled to the twist cam groove  310  of the tubular operation body  300 . When the cam protrusion  210  rotates along a cam curve, the content cartridge  110  and the sleeve  200  may simultaneously move forward or rearward together by the second movement distance L 2 . 
     The cam groove  120  has a twisted shape and is provided in singular or plural along a cylindrical portion. The cam groove  120  includes the inclined portion  121  and the straight portion  122 . 
     Therefore, when the operation cap  500  to be described below is rotated in the state in which the cam pin  320  of the tubular operation body  300  is slidably coupled to the cam groove  120 , the tubular operation body  300  moves forward or rearward by the first movement distance L 1  in the housing  100  while rotating along the inclined surface corresponding to the inclined portion  121 . 
     Further, after the cam pin  320  is moved to the position corresponding to the straight portion  122  of the cam groove  120 , the operation cap  500  rotates, but the tubular operation body  300  does not move forward or rearward, even though the operation cap  500  is continuously manipulated. 
     In addition, the sleeve  200  has a cylindrical hollow shape into which the content cartridge  110  is fitted and coupled, and the cam protrusion  210  integrally protrudes from an outer surface of the sleeve  200 . 
     It is noted that the sleeve  200  may be manufactured separately from the content cartridge  110  or manufactured integrally with the content cartridge  110 . 
     The cam protrusion  210  is assembled to the twist cam groove  310  of the tubular operation body  300 . When the cam protrusion  210  rotates along the cam curve, the content cartridge  110  and the sleeve  200  simultaneously move forward or rearward together by the second movement distance L 2 . 
     The tubular operation body  300  includes: the twist cam groove  310  into which the cam protrusion  210  of the sleeve  200  is slidably fitted; and the cam pin  320  protruding and configured to move to a position misaligned with the twist cam groove  310  by being guided by the cam groove  120  of the housing  100 . 
     The twist cam groove  310  has a twisted shape and is provided in singular or plural along the cylindrical portion. The twist cam groove  310  includes the straight portion  311  and the inclined portion  312 . 
     Therefore, when the cam protrusion  210  moves along the twist cam groove  310 , the cam protrusion  210  cannot move forward in the straight portion  311 , but the cam protrusion  210 , together with the sleeve  200 , may move forward or rearward after the cam protrusion  210  is positioned in the inclined portion  312 . 
     The reason why the straight portion  311  is formed in the twist cam groove  310  as described above is to maintain a time difference between the process of operating the ball valve  400  and the process of opening or closing the passing hole  430 , thereby preventing the contact between the ball valve  400  and a nib  111  of the content cartridge  110  that moves forward or rearward together with the sleeve  200 . 
     The cam protrusion  210  of the sleeve  200  is fitted with the inclined portion  312 , such that the tubular operation body  300  moves forward or rearward by the second movement distance L 2  along the cam curved surface in the housing  100 . 
     In this case, the second movement distance L 2  by which the sleeve  200  and the content cartridge  110  move forward or rearward may be relatively longer than the first movement distance L 1  provided at the tip of the housing  100 . Alternatively, the first movement distance L 1  may be relatively longer than the second movement distance L 2 . 
     That is, both the cam groove  120  of the housing  100  and the twist cam groove  310  of the tubular operation body  300  each have the twisted shape, and the structure including the cam groove  120  and the twist cam groove  310  may be called the dual twist structure. 
     More specifically, the dual twist structure means a structure having two cam grooves that convert a rotational motion into a rectilinear motion, thereby moving the object by an appropriate distance and at an accurate time when ejecting the object, such that an end of the object accurately passes through an opening port. 
     More specifically, the dual twist structure includes the cam groove  120  of the housing  100  and the twist cam groove  310  of the tubular operation body  300 . 
     Meanwhile, the guide groove  140  is formed at a center in the housing  100  in a direction of a center of an axis, i.e., a direction in which the content cartridge  110  is ejected. As the guide protrusion  113  protruding from the content cartridge  110  is assembled by being fitted into the guide groove  140 , the sleeve  200  and the content cartridge  110  cannot rotate but can move forward or rearward only in the rectilinear direction. 
     Further, the coupling protrusion  112  protrudes at a position spaced apart from the guide protrusion  113  and is coupled and fitted into the coupling groove  220  provided in the sleeve  200 . 
     In addition, a single groove  115  or a plurality of grooves  115  is formed in a tip portion of the content cartridge  110 , and a single protrusion  205  or a plurality of protrusions  205  configured to be coupled to the groove  115  is formed on the sleeve  200 . 
     Therefore, the content cartridge  110  and the sleeve  200  are tightly assembled and sealed so as not to separate from each other or move unintentionally. 
     In addition, according to another embodiment, the guide protrusion  113  may be formed at the center in the housing  100 , and the guide groove  140  capable of accommodating the guide protrusion  113  may be formed in the content cartridge  110 . 
     A pair of arms  330  extends from the tubular operation body  300  toward the tip portion and each has shaft holes  331 . 
     The arms  330  serve to turn the ball valve  400 . 
     The ball valve  400  has a ball shape and includes center pins  410  protruding outward from two opposite sides of a center position thereof. 
     Further, eccentric pins  420  protrude at eccentric positions spaced apart from the center pins  410  at a distance. 
     The eccentric pin  420  is assembled by being fitted into the shaft hole  331  of the arm  330 . 
     Further, the passing hole  430  is formed in the ball valve  400  and disposed at a position at which the arms  330  are maximally moved to the tip of the ball valve  400  so that the nib  111  of the content cartridge  110  may pass through the passing hole  430 . 
     Therefore, when the arms  330  move forward or rearward together with the tubular operation body  300 , the ball valve  400  controls the position of the passing hole  430  by turning the eccentric pins  420  at the exact position about the center pins  410 , thereby opening or closing the passageway. 
     The tubular operation body  300  simultaneously rotates in the twist direction and moves forward or rearward by being guided by the cam groove  120  provided in the housing  100 . 
     The operation cap  500  is installed on the tip portion of the housing  100  to manipulate the tubular operation body  300  and the sleeve  200 . 
     The operation cap  500  has a cylindrical hollow shape and is rotatably coupled to the tip of the housing  100 . The operation cap  500  has a guide groove  510  into which the cam pin  320  of the tubular operation body  300  is slidably fitted. 
     Meanwhile, as illustrated in  FIGS. 23 and 24 , the operation cap serves as a guide that moves the tubular operation body while rotating the tubular operation body. An embodiment in which the tubular operation body is operated and moved forward in another manner may be applied to the present disclosure in addition to the embodiment in which the cam pin of the tubular operation body is operated by being fitted into the guide groove of the operation cap (a sealing structure having a rotary ball). 
     Meanwhile, to allow the housing  100  and the operation cap  500  to freely rotate and prevent the separation between the housing  100  and the operation cap  500 , a catching groove  130  is formed in the housing  100 , and a catching protrusion  520 , which is caught by the catching groove  130 , is formed on the operation cap  500 . 
     It is advantageous in preventing the separation that the catching grooves  130  and the catching protrusions  520  are respectively installed at a plurality of positions while maintaining distances therebetween. 
     Therefore, the operation cap  500  does not separate from the housing  100  even though the operation cap  500  is turned. 
     Further, a ball seat  440  made of an elastic material is installed inside the tip portion of the operation cap  500  and supports the rotation of the ball valve  400 , thereby sealing the ball valve  400 . 
     In addition, a support ring  450  is installed to allow the ball valve  400  to be turned about the center pins  410  in the state in which the center pins  410  of the ball valve  400  are fitted into the pin holes  451 . A spring  460  for maintaining elasticity is installed between the support ring  450  and the housing  100 . 
     In this case, it is noted that the support ring  450  may be manufactured integrally with the operation cap  500  to reduce the manufacturing process and the manufacturing costs. 
     The spring  460  presses the ball valve  400  connected to the support ring  450  so that the ball valve  400  is in close contact with the ball seat  440 , such that a gap is prevented from being formed at the periphery of the ball valve  400 , thereby maintaining an effect of perfectly sealing the inside of the housing  100 . 
     In this case, the spring  460  and the housing  100  may be independently manufactured. However, the spring  460  may be manufactured integrally with the tip of the housing  100 . 
     In this case, the spring  460  and the housing  100  may be made of a single material having elasticity, thereby reducing the manufacturing process and the manufacturing costs and improving the economic effect. 
     An installation part  530  is provided inside the tip portion of the operation cap  500 , and the support ring  450  is seated on the installation part  530  and prevented from being moved unintentionally. 
     In addition, a notch groove  332  is formed at an inner end of each of the arms  330  so that the arms  330  are freely bent. Therefore, the ball valve  400  may smoothly move even in an upward/downward direction during the process in which the ball valve  400  turns the eccentric pins  420  about the center pins  410  as the arms  330  move forward or rearward. 
     The nib  111 , a brush, or the like is installed at the tip of the content cartridge  110  structured as described above, such that the content cartridge  110  may be configured as an ink container for a writing instrument. 
     In addition, the nib  111  disclosed in the present specification means a pen point. Further, the nib  111  may mean a component capable of transmitting the contents, stored in the content cartridge  110 , to the outside of the object ejecting device. In addition, the nip  111  may be provided in the form of a brush, a simple opening, a tube, or the like. 
     Alternatively, it is noted that the content cartridge  110  may be configured as a container that accommodates stick cosmetic contents. 
       FIG. 6  is a cross-sectional view illustrating a state in which the respective components of the present disclosure are assembled, and  FIG. 7  is an enlarged view of  FIG. 6 , which illustrates a state in which the content cartridge  110  and the nib  111  are accommodated and stored in the housing  100 . 
       FIG. 8  illustrates a state in which the content cartridge  110  and the nib  111  are exposed to the outside of the housing  100  and used in a state in which the operation cap  500  is rotated by about 180 degrees and the passing hole  430  of the ball valve  400  is opened. 
     In this case, it is noted that the operation cap  500  may be rotated within a range of angle, which is not predetermined, depending on the field to which the object ejecting device is applied. 
     When the operation cap  500  rotatably coupled to the tip portion of the housing  100  is turned, the rotational force is transmitted to the tubular operation body  300  in the state in which the cam pin  320  is caught by the guide groove  510 , and the tubular operation body  300  moves forward by the first movement distance L 1  while rotating by being guided by the inclined portion  121  of the cam groove  120  provided in the housing  100 . 
     Further, even though the operation cap  500  continuously rotates, the cam pin  320  moves along the straight portion  122 , such that the tubular operation body  300  stops rectilinearly moving and only rotates at the same position. 
     At the same time, the sleeve  200  and the content cartridge  110  operate together along the twist cam groove  310  provided in the tubular operation body  300 . 
     First, during the process in which the tubular operation body  300  moves forward while rotating, the cam protrusion  210  is positioned in the straight portion  311  of the twist cam groove  310 . Therefore, the sleeve  200  and the content cartridge  110  coupled to the sleeve  200  move together by a distance equal to the movement distance of the tubular operation body  300 . 
     In this case, the continuous movement of the tubular operation body  300  turns the ball valve  400 . At the moment when the cam protrusion  210  is positioned at the position on the inclined portion  312  connected to the straight portion  311 , the content cartridge  110  coupled to the sleeve  200  quickly moves forward by the second movement distance L 2 . 
     That is, in the state in which the guide groove  140  of the housing  100  prevents the guide protrusion  113  from rotating, the content cartridge  110  further rectilinearly moves forward by the second movement distance L 2  defined by the inclined portion  312 . 
     In this case, the second movement distance L 2  is relatively longer than the first movement distance L 1 , and the movement distance of the content cartridge  110  coupled to the sleeve  200  is relatively long, such that the nib  111  may be sufficiently exposed to the outside of the operation cap  500 . 
     The guide groove  510  provided in the operation cap  500  is recessed to have a sufficient length in consideration of the distance by which the cam pin  320  moves. The guide groove  510  guides the rectilinear movement while preventing the separation when the cam pin  320  rotates. 
     The arms  330  extending toward the tip portion of the tubular operation body  300  move forward or rearward in the state in which the eccentric pins  420  of the ball valve  400  are fitted with and assembled to the shaft holes  331 , such that the arms  330  may turn the ball valve  400  and shift the position of the passing hole  430  to open or close the passing hole  430  (see  FIGS. 8 and 10 ). 
     In addition, when the operation cap  500  is rotated to the original position, the sleeve  200  and the content cartridge  110  begin to be retracted first in reverse order by being guided by the inclined portion  312 , and the operation of the tubular operation body  300  shifting the position of the passing hole  430  of the ball valve  400  cannot be performed by the straight portion  122  of the cam groove  120  formed in the housing  100 . 
     Further, from the moment when the cam pin  320  is positioned in the inclined portion  121 , the tubular operation body  300 , together with the arms  330 , is retracted, the ball valve  400  also begins to be turned, and then the passing hole  430  is rotated in the movement direction of the nib  111 , such that the ball valve  400  is returned to maintain the sealed state (see  FIGS. 7 and 9 ). 
       FIG. 9  is an enlarged cross-sectional view illustrating a state immediately before the operation cap  500  is manipulated at a position at which the cam protrusion  210  is assembled to the twist cam groove  310  of the tubular operation body  300 . 
       FIG. 10  is an enlarged cross-sectional view illustrating a state in which the tubular operation body  300 , the sleeve  200 , and the nib  111  provided at the tip of the content cartridge  110  are moved forward by the rotation of the operation cap  500 , and the nib  111  is exposed to the outside of the operation cap  500 . 
       FIGS. 11 to 13  illustrate operating states of the operation cap  500 , the sleeve  200 , and the ball valve  400  in a state in which the operation cap  500  and the housing  100  are cut by about  1 / 2 . 
       FIGS. 14 to 16  are perspective views illustrating operating states of the operation cap  500 , the sleeve  200 , and the ball valve  400  in a state in which only the operation cap  500  and the housing  100  are cut by about ½. 
       FIGS. 17 and 19  are perspective views and a front view illustrating a position at which the passing hole  430  is closed in a direction perpendicular to the direction in which the nib  111  moves forward in a state in which the arms  330  provided on the tubular operation body  300  are connected to the ball valve  400  in a state immediately before the arms  330  move forward. 
       FIGS. 18 and 20  are a perspective view and a front view illustrating a position at which the passing hole  430  is opened in a straight line with respect to the direction in which the nib  111  moves forward in the state in which the arms  330  provided on the tubular operation body  300  are connected to the ball valve  400  in the state in which the arms  330  is moved forward. 
     The arms  330  moves upward or downward while moving forward or rearward to turn the eccentric pins  420 . 
     Meanwhile, a plurality of O-rings may be installed at the periphery of the rotary components to prevent the nib  111  from being dried or prevent volatile contents from being evaporated. 
     Further, the support ring  460  connected to the ball valve  400  is consistently pressed by the spring  460 , and thus the ball valve  400  is in close contact with the ball seat  440 , such that a gap is prevented from being formed at the periphery of the ball valve  400 , thereby maintaining an effect of perfectly sealing the inside of the housing  100  for a long period of time. 
     According to the dual twist structure, the object ejecting device including the same, and the structure for sealing the same according to the present disclosure configured as described above, the content cartridge  110  may be applied to a writing instrument for storing volatile ink and preventing the ink from being dried, for example. 
     In addition, it is possible to prevent contents, such as stick cosmetics which may be discolored or degenerated, from being discolored or degenerated, and to maintain cleanliness for a long period of time. 
     A fixing unit  600  is provided on at least any one of an end of the cam groove  120  and an end of the twist cam groove  310 . 
     According to the embodiment of the present disclosure, as illustrated in  FIG. 21A , the fixing unit  600  may be provided at the end of the cam groove  120 . 
     In this case, the fixing unit  600  includes a first stopper  610  formed to be convex toward the inside of the cam groove  120  and disposed on at least one of one end and two opposite ends of the cam groove  120 . 
     The first stopper  610  is formed to be convex toward the inside of the cam groove  120 , i.e., toward a centerline in the cam groove  120 . When a predetermined pressure is further applied after the cam pin  320  approaches the first stopper  610 , the cam pin  320  is resiliently fitted with and coupled to the first stopper  610 . 
     In this case, the first stopper  610  may be convexly formed only at one side or two opposite sides toward the centerline in the cam groove  120 . The cross-sectional shape of the first stopper  610  may be a streamlined shape or an angled shape. 
     That is, the fixing unit  600  restricts a movement of the cam pin  320  after the cam pin  320  moves along the cam groove  120  and is fitted with and coupled to the first stopper  610 , such that it is possible to prevent the rotation of the operation cap  500  and allow the user to recognize the rotation of the operation cap  500  and easily check whether the object ejecting device is sealed. 
     In addition, as illustrated in  FIG. 21B , the fixing unit  600  may be provided at the end of the twist cam groove  310 . 
     In this case, the fixing unit  600  includes a second stopper  620  formed to be convex toward the inside of the twist cam groove  310  and disposed on at least one of one end and two opposite ends of the twist cam groove  310 . 
     The second stopper  620  is formed to be convex toward the inside of the twist cam groove  310 , i.e., toward a centerline in the twist cam groove  310 . When a predetermined pressure is further applied after the cam protrusion  210  approaches the second stopper  620 , the cam protrusion  210  is resiliently fitted with and coupled to the second stopper  620 . 
     In this case, the second stopper  620  may be convexly formed only at one side or two opposite sides toward the centerline in the twist cam groove  310 . The cross-sectional shape of the second stopper  620  may be a streamlined shape or an angled shape. 
     That is, the fixing unit  600  restricts a movement of the cam protrusion  210  after the cam protrusion  210  moves along the twist cam groove  310  and is fitted with and coupled to the second stopper  620 , such that it is possible to prevent the rotation of the operation cap  500  and allow the user to recognize the rotation of the operation cap  500  and easily check whether the object ejecting device is sealed. 
     According to still another embodiment of the present disclosure, as illustrated in  FIG. 22A , the fixing unit  600  may be provided at the end of the cam groove  120 . 
     In this case, the fixing unit  600  includes a first magnet  630  disposed on at least one of one end and two opposite ends of the cam groove  120 . 
     The first magnet  630  may be attached to or embedded in at least one of one end and two opposite ends of the cam groove  120 . The first magnet  630  is made of a material for providing a magnetic force, such that when the cam pin  320  approaches the first magnet  630 , the cam pin  320  is coupled to the first magnet  630  by the magnetic force. 
     That is, the fixing unit  600  may restrict the movement of the cam pin  320  by means of the magnetic force of the first magnet  630  when the cam pin  320  moves along the cam groove  120 . Therefore, it is possible to prevent the rotation of the operation cap  500  and allow the user to recognize the rotation of the operation cap  500  and easily check whether the object ejecting device is sealed. 
     In addition, as illustrated in  FIG. 22B , the fixing unit  600  may be provided at the end of the twist cam groove  310 . 
     In this case, the fixing unit  600  includes a second magnet  640  disposed on at least one of one end and two opposite ends of the twist cam groove  310 . 
     The second magnet  640  may be attached to or embedded in at least one of one end and two opposite ends of the twist cam groove  310 . The second magnet  640  is made of a material for providing a magnetic force, such that when the cam protrusion  210  approaches the second magnet  640 , the cam protrusion  210  is coupled to the second magnet  640  by the magnetic force. 
     That is, the fixing unit  600  may restrict the movement of the cam protrusion  210  by means of the magnetic force of the second magnet  640  when the cam protrusion  210  moves along the twist cam groove  310 . Therefore, it is possible to prevent the rotation of the operation cap  500  and allow the user to recognize the rotation of the operation cap  500  and easily check whether the object ejecting device is sealed. 
     The exemplary embodiments disclosed in the present specification and the configurations illustrated in the drawings are just the best preferred exemplary embodiments of the present disclosure and do not represent all the technical spirit of the present disclosure. Accordingly, it should be appreciated that various equivalents and modified examples capable of substituting the exemplary embodiments may be made at the time of filing the present application. 
     From the foregoing, it will be appreciated that various embodiments of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various embodiments disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.