Patent Publication Number: US-9894980-B2

Title: Rotary-push type cosmetic container

Description:
TECHNICAL FIELD 
     The present invention relates to a rotary-push type cosmetic container. More particularly, the present invention relates to a rotary-push type cosmetic container that can easily discharge a cosmetic because an internal container keeping a cream type cosmetic is moved up by a rotary plate, and an outlet hole of the rotary plate opens and the cosmetic comes out in an appropriate amount only when the internal container is moved up, and that can sanitarily keep the cosmetic without changing the quality of the cosmetic by preventing leakage of the cosmetic or contact with air when it is carried. 
     BACKGROUND ART 
     In general, pot type containers with a wide mouth are used as containers for keeping liquid foundations or various cream type cosmetics such as BB cream, a moisturizing cream, an eye cream, a cold cream, a massage cream, and a nourishing cream. 
     However, cosmetics in pot type containers come in contact with air in a wide area so the quality of such products changes fast. Further, users extract the cosmetic using their fingers, so bacteria transfers from the user&#39;s fingers to the remaining cosmetic in the container, which results in contamination. Furthermore, extracting a desired amount of the cosmetic cannot be easily or accurately controlled, so it is difficult to extract an appropriate amount of cosmetic. In addition, users may excessively extract more of the cosmetic product than is needed and throw away the remaining portion after use, or put it back into the container. Accordingly, it is difficult to prevent waste when using such a pot type container. 
     In order to solve these problems, various type of cosmetic containers that discharge cosmetics have been proposed in the related art. 
     For example, disclosed in Korean Patent Application Publication No. 10-2007-0088301, is an “ejecting container” that presses and ejects a cosmetic through the top through an outlet by reducing a center angle made by a fixed plate and a rotary plate to decrease the volume of a chamber, when a container body and a cover unit are relatively rotated. However, the outlet formed through the top simply covered with the cover unit, but is always open, so it is difficult to prevent leakage of the cosmetic and effectively prevent inflow of foreign substances. Further, the cosmetic is always in contact with external air, so the possibility of change in quality of the cosmetic is a concern. 
     Further, disclosed in Korean Utility Model No. 20-0361671, is a “cosmetic cream container” including a container body that has: a threaded rod at the center, a piston assembly that moves along the threaded rod to discharge a cosmetic cream to the outside; an internal container lifter that moves the piston assembly along the threaded rod by rotating about the container body and has an outlet for discharging the cosmetic cream; and a valve unit that elastically operates to discharge the cosmetic cream to the outside by opening the outlet when a rotary unit rotates, in which the rotary unit includes first and second rotary bodies. However, in the cosmetic cream container, a cosmetic cream is placed on the piston assembly that is moved up by rotation of the rotary unit. Accordingly, the cosmetic cream may flow by gravity to the lower portion of the container body through a small gap between the piston assembly and the threaded rod. Further, when the cosmetic cream collects on the bottom of the container body, it cannot be taken out, so some of the cosmetic cream cannot be used. If the threaded rod bends or deforms even slightly in the process of manufacturing or assembling, it causes a structural problem wherein the piston assembly may not be stable when being move up. Further, it is difficult to manufacture the cosmetic cream container in a small size due to the structure for moving the piston assembly, thus a large container is required. However, such a large container is inconvenient to carry. 
     Further, proposed in Korean Patent Application Publication No. 10-2013-0102280, is an “extrusion type cosmetic case” in which as a piston is moved down along a threaded rod by rotation of an upper case and presses a cosmetic in a lower case, the cosmetic is discharged through an outlet and a hole of a boss. However, although the structure of the cosmetic case can be considered as being simple, it is difficult to ensure stable horizontal movement of the piston when it moves down along the threaded rod. Further, since the outlet and the hole for discharging the cosmetic are always open, air and foreign substances are not blocked, so there is a limit in preventing a change in quality or contamination of the cosmetic due to contact with air. 
     Related Art Document 
     (Patent Document 1) Korean Patent Application Publication No. 10-2007-0088301 
     (Patent Document 2) Korean Utility Model No. 20-0361671 
     (Patent Document 3) Korean Patent Application Publication No. 10-2013-0102280 
     DISCLOSURE OF INVENTION 
     Technical Problem 
     Accordingly, the present invention has been made keeping in mind the above problems occurring in the related art, and the present invention is intended to propose a rotary-push type cosmetic container that can easily discharge a cosmetic because an internal container keeping a cream type cosmetic is moved up by a rotary plate, and an outlet hole of the rotary plate opens and the cosmetic comes out in an appropriate amount only when the internal container is moved up, and that can sanitarily keep the cosmetic without changing the quality of the cosmetic by preventing leakage of the cosmetic or contact with air when it is carried. 
     Solution to Problem 
     In order to achieve the above object, according to one aspect of the present invention, there is provided a rotary-push type cosmetic container that includes a lower case and an upper case opening up and closing down with respect to the lower case, in which, inside the lower case, there are disposed an internal case keeping a cosmetic and having a thread around an outer side, a middle case disposed outside the internal case inside the lower case without rotating, a piston inserted in the internal case, a nozzle plate disposed on the piston elastically by a spring, having a hole at a center where a nozzle is coupled, and having a saw-toothed portion at an edge of a top, a rotary plate thread-fastened to the thread on the outer side of the internal container, coupled to a top of the piston, rotatably combined with a middle case without moving up and down, having a saw-toothed portion at an edge of a bottom of a body, and shaped to correspond to the saw-toothed portion of the nozzle plate so that when the body is rotated, the internal container moves up, the nozzle plate elastically moves down, and a head of a nozzle moves away from an extraction hole at a center of the body, and a decompression mechanism having a decompression chamber communicating with a nozzle hole of the nozzle outside an upper portion of the hole of the nozzle plate and preventing leakage of a cosmetic by reducing internal pressure of the internal container. 
     Guide bars may be partially formed around the outer side of the internal container and inserted in guide grooves vertically formed on an inner side of the lower case, so the internal container may be movable up and down without rotating. 
     The internal container may have a back-filling hole formed through the bottom for filling a cosmetic and a sealing packing inserted in a packing hole coaxially formed through a bottom of the lower case is combined to the back-filling hole after a cosmetic is filled. 
     The rotary plate may have tension ribs having a vertical locking protrusion and formed with regular intervals around a bottom and the vertical locking protrusions may be locked to a lower end of the middle case, and the tension ribs may have a sub-tension rib at a center and a ratchet protrusion on the sub-tension rib for stopping rotation and ratchet grooves for locking the ratchet protrusions may be formed on an inner side of the middle case, so the ratchet protrusions may slide over the ratchet grooves in one direction by tension of the sub-tension ribs, but may be locked in the opposite direction. 
     A plurality of guide protrusions may be formed on a top of the piston and guide holes of the nozzle plate may be fitted on the guide protrusions to guide the nozzle plate moving up and down. 
     The extraction hole formed at the center of the rotary plate and the head of the nozzle that is inserted into the extraction hole may have tapered portions, respectively so that the extraction hole may be rapidly opened and closed. 
     The rotary plate may have anti-sliding protrusions on the outer side and an indicator for a user to check the degree of rotation of the rotary plate at a predetermined position on the top. 
     The nozzle hole of the nozzle may be composed of a vertical hole at a center of a lower portion and a horizontal hole formed over the vertical hole and being open to the upper portion of the decompression chamber of the nozzle plate, and the vertical hole and the horizontal hole may be connected to each other so that a cosmetic in the internal container may be extracted to the extraction hole of the rotary plate through the nozzle hole and the upper portion of the decompression chamber. 
     A decompression piston may be disposed in the decompression chamber of a decompression unit and elastically moved up and down by a lower spring, and when the extraction hole of the rotary plate is closed, the decompression spring may decrease the internal pressure of the internal container to prevent pressure for extracting the cosmetic from being generated too much. 
     Advantageous Effects of Invention 
     According to the present invention having the above-described characteristics, the internal container filled with a cosmetic is moved up when the rotary plate is rotated, and the extraction hole of the rotary plate is opened only when the internal container is moved up, so a cosmetic can be simply extracted and an appropriate amount of cosmetic can be extracted so the cosmetic is not wasted. 
     Further, since the extraction hole is maintained in a closed state by the nozzle when the cosmetic container is carried, and the increasing internal pressure is decreased by the decompression unit, it is possible to prevent a cosmetic from leaking, foreign substance from flowing inside, and external air from coming in contact with the cosmetic, so it is possible to sanitarily keep the cosmetic and use it for a long period of time without changing in quality. 
     Further, since the piston for providing pressure for extracting a cosmetic is not moved when the internal container is moved up, it is possible to achieve structural stability, as compared with the existing structure in which a piston pressing a cosmetic by moving up or down. 
     Further, since a back-filling hole for filling a cosmetic is formed through the bottom of the internal container and the cosmetic container can be filled with a cosmetic after being assembled, so assembly productivity of the cosmetic container can be improved and the cosmetic container can be conveniently filled with a cosmetic. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view showing an assembly of a cosmetic container according to an embodiment of the present invention. 
         FIG. 2  is a perspective view showing the cosmetic container according to an embodiment of the present invention, with an upper case open. 
         FIG. 3  is a cross-sectional view taken along line A-A of  FIG. 1 . 
         FIG. 4  is a cross-sectional view taken along the line B-B of  FIG. 3 . 
         FIG. 5  is a partial enlarged cross-sectional view of the portion C of  FIG. 3 . 
         FIG. 6  is a partial enlarged cross-sectional view of the portion D of  FIG. 3 . 
         FIG. 7  is an exploded perspective view showing the cosmetic container according to an embodiment of the present invention. 
         FIG. 8  is a cross-sectional view showing an example of using a cosmetic with the upper case open in accordance with an embodiment of the present invention. 
         FIG. 9  is a partial view showing operation of uneven portions of a rotary plate and a nozzle plate according to an embodiment of the present invention. 
         FIG. 10  is a partial view showing a nozzle that is open in accordance with an embodiment of the present invention. 
         FIG. 11  is a partial view showing a decompression unit according to an embodiment of the present invention. 
         FIG. 12  is a perspective view showing the bottoms of the rotary plate and the nozzle plate according to an embodiment of the present invention. 
         FIG. 13  is a horizontal cross-sectional view showing a mechanism for preventing reverse rotation of the rotary plate when it is combined as in  FIG. 12 . 
     
    
    
     DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS 
     
         
         
           
               100 : Rotary-push type cosmetic container 
               10 : Lower case  12 : Guide groove 
               15 : Packing hole  20 : Upper case 
               30 : Internal container  31 : Thread 
               32 : Guide bar  34 : Back-filling hole 
               35 : Sealing packing  40 : Middle case 
               45 : Ratchet groove  46 : Rotation region 
               50 : Piston  52 : Guide protrusion 
               55 : Spring  60 : Nozzle plate 
               61 : Hole  62 : Saw-toothed portion 
               63 : Guide hole  65 : Nozzle 
               66 : Head  67 : Insertion 
               68 : Nozzle hole  70 : Rotary plate 
               71 : Body  72 : Saw-toothed portion 
               73 : Tension rib 
               73   a : Vertical locking protrusion 
               74 : Sub-tension rib  74   a : Ratchet protrusion 
               75 : Extraction hole  79 : Anti-sliding protrusion 
               80 : Decompression unit  81 : Decompression chamber 
               82 : Decompression piston  83 : Lower spring 
           
         
       
    
     MODE FOR THE INVENTION 
     Reference will now be made in greater detail to an exemplary embodiment of the present invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings and the description to refer to the same or like parts. 
     A rotary-push type cosmetic container according to an embodiment of the present invention, as shown in  FIGS. 1 to 13 , includes a lower case  10  and an uppercase  20  opening/closing up/down from the lower case  10 , in which the lower case  10  and the upper case  20  are locked and unlocked by a locking unit at a side. 
     There are disposed, inside the lower case  10 , an internal case  30  that keeps a cosmetic and has a thread  31  around the outer side, 
     a middle case  40  that is disposed outside the internal case  30  inside the lower case  10  without rotating. 
     a piston  50  that is inserted in the internal case  30 . 
     a nozzle plate  60  that is disposed on the piston  50  elastically by a spring  55 , has a hole  61  at the center where a nozzle is coupled, and has a saw-toothed portion  62  at the edge of the top, 
     a rotary plate  70  that is thread-fastened to the thread  31  on the outer side of the internal container, is coupled to the top of the piston, rotatably combined with a middle case  40  without moving up and down, and has a saw-toothed portion  72  at the edge of the bottom of a body  71  and shaped to correspond to the saw-toothed side  62  of the nozzle plate so that when the body is rotated, the internal container  30  moves up, the nozzle plate  60  elastically moves down, and a head  66  of a nozzle  65  moves away from an extraction hole  75  at the center of the body, and 
     a decompression unit  80  that has a decompression chamber  81  communicating with a nozzle hole  68  of the nozzle  65  outside the upper portion of the hole  61  of the nozzle plate  60  and prevents leakage of a cosmetic by reducing the internal pressure of the internal container  30 . 
     Guide bars  32  are formed around the outer side of the internal container  30  and inserted in guide grooves  12  vertically formed on the inner side of the lower case  10 , so the internal container  30  can move up and down, but cannot rotate. 
     A thread  31  is formed on the outer sides of the guide bars  32  of the internal container  30 . 
     The internal container  30  has a back-filling hole  34  formed through the bottom for filling a cosmetic and a sealing packing  35  that is inserted in a packing hole  15  coaxially formed through the bottom of the lower case  10  and is combined to the back-filling hole  34  after a cosmetic is filled. 
     The cosmetic that is put in the internal container  30  may be a liquid foundation or a cream type cosmetic having viscosity such as a BB cream, a moisturizing cream, an eye cream, a cold cream, a massage cream, and a nourishing cream. 
     Locking protrusions  41  on the outer side of the middle case  40  are locked to locking protrusions  11  on the inner side of the lower case  10  to prevent separation, locking projections (not shown) are locked to locking grooves  42  to prevent separation, and the middle case  40  and the upper case  20  are coupled by a hinge  2 , so the upper case  20  is rotated up and down to open and close. 
     The rotary plate  70  has a cosmetic tool seat  79  at the upper portion for keeping cosmetic tools such as a puff  90  and has anti-sliding protrusions  79  on the outer side and an indicator  79   a  at a predetermined position on the top to show the amount of rotation of the rotary plate. 
     The rotary plate  70  has tension ribs  73  having a vertical locking protrusion  73   a  and formed with regular intervals around the bottom, so when the tension ribs  73  are inserted in the middle case  40 , the locking protrusions  73   a  are locked to the bottom of the middle case  40  by the tension of the tension ribs  73 . Accordingly, the rotary plate  70  can rotate without separating from the middle case  40 . 
     The tension ribs  73  have a sub-tension rib  74  at the center and a ratchet protrusion  74   a  on the sub-tension rib  74  that stops rotation and ratchet grooves  74   a  for locking the ratchet protrusion  74   a  are formed on the inner side of the middle case  40 , so the ratchet protrusions  74   a  can slide over the ratchet grooves  45  in one direction by the tension of the sub-tension ribs  74 , but are locked in the opposite direction. Therefore, the rotary plate  70  is rotated in one direction relative to the middle case  40  and not rotated in the opposite direction. 
     The ratchet grooves  45  may be continuously formed, but it is preferable to form rotation regions  46  between adjacent ratchet grooves  45  so that the ratchet protrusions  74   a  pass the rotation regions  46  and are then locked to the next ratchet grooves  45 . 
     A ring-shaped insertion space  76  is formed on the outer side of the lower portion of the rotary plate  70  so that the internal container  30  is inserted to be movable up and down and the threads  31  on the outer side of the internal container are thread-fastened to a thread  76   a  on the inner side of the insertion space. 
     The piston  50  that presses a cosmetic when the internal container  30  is moved up is combined to the lower portion of the rotary plate  70  and a coupling groove  51  at the upper portion of the piston  50  is supported on a coupling rib  71  at the lower portion of the rotary plate  70  by a locking step so that the piston  50  is not rotated regardless of rotation of the rotary plate  70 . This structure can be achieved by minimizing friction resistance at the combined portion by using different materials for the rotary plate  70  and the piston  50 , in which polyacetal (POM) having a high friction property and self-lubrication may be used for the rotary plate  70  and a low density polyethylene may be used for the piston  50 . Further, the outer side of the piston  50  is elastically in close contact with the inner side of the internal container  30 , so it cannot easily rotate with the rotary plate  70 . 
     A plurality of guide protrusions  52  is formed on the top of the piston  50  and guide holes  63  of the nozzle plate  60  are fitted on the guide protrusions  52  to guide the nozzle plate moving up and down. 
     That is, as the rotary plate  70  rotates with the saw-toothed portion  72  on the bottom of the rotary plate engaged with the saw-toothed portion  62  on the top of the nozzle plate  60 , every time a prominence slides over another prominence, the nozzle plate  60  is elastically moved down and then returned to the degree equivalent to the height of the prominence by the spring  55 , thereby guiding the nozzle plate moving up and down. 
     The extraction hole  75  at the center of the rotary plate  70  and the head  66  of the nozzle  65  that is inserted into the extraction hole  75  have tapered portions  75   a  and  66   a , respectively, so the extraction hole  75  is rapidly opened and closed. 
     The nozzle  65  has a lower insertion  67  that is radially cut, so the lower insertion is elastically inserted in a center hole  61  of the nozzle plate and locked by lower locking steps  67   a . Further, the nozzle has a nozzle hole  68  including a vertical hole  69   a  at the center of the lower portion and a horizontal hole  68   b  formed over the vertical hole and being open to the upper portion of the decompression chamber of the nozzle plate  60 , in which the vertical hole  68   a  and the horizontal hole  68   b  are connected to each other. Accordingly, a cosmetic in the internal container  30  is extracted to the extraction hole  75  of the rotary plate  70  through the nozzle hole  68  and the upper portion of the decompression chamber  81 . 
     A decompression piston  82  is disposed in the decompression chamber  81  of the decompression unit  80  and elastically moved up and down by a lower spring  83 , so when the extraction hole  75  of the rotary plate is closed, it decreases the internal pressure of the internal container  30  to prevent the pressure for extracting the cosmetic from being excessively generated. 
     A reference numeral ‘ 28 ’ not stated above indicates a mirror. 
     Operation of the present invention having this configuration is described hereafter. 
     First, when a user carries the rotary-push type cosmetic container  100  of the present invention, it is in the assembly state as in  FIG. 3 . In this state, the internal container  30  has been filled with a cosmetic through the back-filling hole  34  and the back-filling hole is closed by a sealing packing  35 . Further, since the extraction hole  75  of the rotary plate  70  is closed by the nozzle  65  at the center of the nozzle plate  60  that has been elastically moved up by the spring  55 , the cosmetic in the internal container  30  is not unexpectedly extracted or prevented from leaking. 
     Accordingly, when the cosmetic container  100  is carried for use, the cosmetic can be kept sanitary. Further, since the extraction hole  75  of the rotary plate  70  is closed by the nozzle  65 , external air or foreign substance cannot flow inside through the extraction hole, so the cosmetic is prevented from changing in quality or being damaged. 
     In this state, a user opens the upper case  20  from the lower case  10 , as shown in  FIG. 7 , to extract and use the cosmetic. 
     Then, when the user rotates the rotary plate  70  in a predetermined direction, the rotary plate  70  rotates in the direction relative to the middle case  40 , and as the rotary plate  70  rotates, the internal container  30  is moved up in the insertion space  76 . 
     That is, since the thread  76   a  of the rotary plate and the threads  31  on the outer side of the internal container  30  are thread-fastened to each other and the guide bars  31  on the outer side of the internal container  30  are in the guide groove  12  of the lower case  10 , the internal container  30  is moved up when the rotary plate  70  rotated. 
     Further, the cosmetic in the internal container  30  moved up by rotation of the rotary plate  70  is pressed by the piston  50  over the internal container. 
     When the rotary plate  70  rotates, the nozzle plate  60  elastically supported by the spring  55  between the rotary plate  70  and the piston  50  is moved up and down with the upward movement of the internal container  30 , every time the prominences of the saw-toothed portion  72  on the bottom of the rotary plate  70  and the saw-toothed portion  62  on the top of the nozzle plate  60  slide over other prominences. 
     As described above, when the nozzle plate  60  is moved up and down, the nozzle  65  in the hole  61  at the center of the nozzle plate is also moved up and down, so the head of the nozzle opens and closes the extraction hole  75  at the center of the rotary plate. 
     Accordingly, the cosmetic in the internal container  30  is supplied to the nozzle hole  68  of the nozzle, that is, to the decompression chamber  81  of the nozzle plate through the vertical hole  68   a  at the lower portion and the horizontal hole  68   b  at the lower portion of the nozzle, so it is extracted by an appropriate amount every time the head  66  opens the extraction hole  75  of the rotary plate. 
     Accordingly, a user puts the cosmetic extracted over the rotary plate  70  on the puff  90  or other cosmetic tools, or on his/her hand for application thereof. 
     A cosmetic is extracted in the way described above and the amount of the cosmetic extracted is adjusted in accordance with the degree of rotation of the rotary plate  70 . That is, every time the prominences of the saw-toothed portion  72  of the rotary plate slide over the prominences of the saw-toothed portion, an appropriate amount of cosmetic is extracted, so the extraction amount can be appropriately adjusted. 
     In detail, when the rotary plate  70  rotates, the head of the nozzle repeats opening and closing the extraction hole  75  of the rotary plate and the cosmetic is extracted, every time the prominences of the saw-toothed portion  72  of the rotary plate slide over the prominences of the saw-toothed portion  62  of the nozzle plate. Accordingly, the amount of the cosmetic extracted at a time is limited, so excessive extraction of the cosmetic is prevented. Further, a user can adjust the degree of rotation of the rotary plate by checking it through the indicator  70   a , so the user can simply extract the cosmetic by a desired amount by increasing the amount of the cosmetic extracted through the extraction hole  75 . 
     Further, rotary plate  70  rotated by extracting the cosmetic cannot reverse and the internal container  30  is not moved down, so the cosmetic can be stably extracted. 
     That is, when the rotary plate  70  rotates, the ratchet protrusions  74   a  on the sub-tension ribs  74  at the centers of the tension ribs  73  formed with regular intervals around the outer side of the rotary plate are locked into the ratchet grooves  45  formed on the inner side of the middle case  40  and prevent reverse of the rotary plate  70 , so the cosmetic can be stably extracted. 
     Further, according to the present invention, the pressure applied by the piston  50  to extract the cosmetic increases and extracts the cosmetic, when the internal container  30  is moved up. However, when the pressure for extracting the cosmetic by the internal container  30  is too high, the extraction hole  75  closed by the head  66  is unexpectedly opened and the cosmetic leaks, so leakage of the cosmetic is prevented when the extraction hole  75  is closed by the decompression unit  80  decreasing the pressure for extracting the cosmetic by the internal container  30 . 
     That is, when the pressure for extracting the cosmetic by the internal container  30  is too high, the cosmetic is extracted over the decompression chamber  81  through the nozzle hole  68  of the nozzle, that is, the vertical hole  68   a  and the horizontal hole  68   b  of the nozzle. In this case, the decompression piston  82  at the upper portion in the decompression chamber  81  guides the pressure for extracting the cosmetic to the decompression chamber  81  by moving down against the lower spring  83 , thereby decreasing the pressure. 
     Accordingly, even if the pressure for extracting the cosmetic by the internal container  30  is too high, the pressure passing through the nozzle hole  68  of the nozzle is not sent to the extraction hole  75 , as in the related art, but decreased in the decompression chamber  81 , so leakage of a cosmetic as in the related art is prevented. 
     Further, according to the present invention, since the extraction hole  75  at the center of the rotary plate  70  and the head  66  of the nozzle  65  that is inserted into the extraction hole  75  have the tapered portions  75   a  and  66   a , respectively, the extraction hole  75  is rapidly opened and closed by the head  66  and even hermetically closed. 
     Further, according to the present invention, since the back-filling hole  34  for filling a cosmetic is formed through the bottom of the internal container  30 , a cosmetic can be filled even after the cosmetic container is assembled, so assembly productivity of the cosmetic container can be improved and the cosmetic container can be conveniently filled with a cosmetic. 
     Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.