Abstract:
A vessel cap of cosmetics includes a coupling member formed on an inner circumferential surface thereof with a female screw part such that the female screw part is engaged with a male screw part formed on an outer circumferential surface of an opening formed in an upper portion of a vessel which receives liquid-phase contents, a spuit tube which is coupled to the coupling member to suck and discharge the contents received in the vessel, and a pumping unit of the spuit tube, which sucks the contents into the spuit tube after inserting the spuit tube into the vessel in a state that internal air of the spuit tube is partially discharged. The spuit tube is inserted into high-viscosity and liquid-phase contents received in the vessel after the internal air is discharged from the spuit tube, thereby previously preventing the discharged air from being introduced into the spuit tube.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a cap for a vessel of cosmetics, which includes a coupling member formed on an inner circumferential surface thereof with a female screw part so that the female screw part is engaged with a male screw part formed on an outer circumferential surface of an opening formed in an upper portion of the vessel which receives liquid-phase contents. More particularly, the present invention provides a cap for a vessel of cosmetics, in which a spuit tube is inserted into high-viscosity and liquid-phase contents received in the vessel after internal air is discharged from the spuit tube, thereby previously preventing the discharged air from being introduced into the spuit tube from the high-viscosity and liquid-phase contents, so that the high-viscosity and liquid-phase contents can be sucked into the spuit tube in a required amount. 
         [0003]    2. Description of the Related Art 
         [0004]    In general, a spuit is a distribution unit to suck a liquid-phase material and discharge the liquid-phase material from the spuit to a required part through an exhaust or suction action generated in a pumping action. As a tube-type pumping part having excellent elastic force and a reversed U shape is compressed, air is discharged from an inner part of a spuit tube coupled to a lower end of the pumping part. When elastic restoring force is generated after the pumping part is compressed, air or liquid-phase contents are sucked into the spuit tube. Then, as the pumping part is re-compressed, the liquid-phase contents are discharged. 
         [0005]    In order to suck and discharge the liquid-phase contents contained in the vessel, the spuit tube is introduced into the contents of the vessel, and the pumping part is compressed to discharge the air from the inner part of the spuit. Then, as the pumping part is compressed and the compressive force of the pumping part is released, the liquid-phase contents received in the vessel are sucked into the spuit tube using the elastic restoring force of the pumping part and the contents sucked into the spuit tube are discharged to a position desired by the user, so that the user can use the liquid-phase contents in a required amount. 
         [0006]    In this case, since the contents received in the vessel represent lower viscosity and excellent flowability when the air is discharged from the inner part of the spuit tube, the air discharged from the spuit tube makes bubbles in the contents and rapidly floats, and the liquid-phase contents approach an opening formed in a lower end of the spuit tube, so that the contents may be sucked into the spuit tube in a suction action. 
         [0007]    However, as shown in  FIG. 1 , when the liquid-phase contents received in a vessel  1  as shown in  FIG. 1  represent higher viscosity, the flowability of the contents is reduced. Accordingly, when a pumping part  3  is compressed to discharge air from the inner part of a spuit tube  2  in the state that the spuit tube  2  is introduced into the liquid-phase contents, and the discharged air does not float after forming an air layer in the liquid-phase contents, but stays around a discharge hole  2   a  in a lower end of the spuit tube  2  while significantly slowly ascends. 
         [0008]    Accordingly, when the user compresses the pumping part  3  and immediately releases the compressive force applied to the pumping part  3 , the air in the air layer staying around the discharge hole  2   a  in the lower end of the spuit tube  2  is sucked into the discharge hole  2   a  in the lower end of the spuit tube  2 , so that the liquid-phase contents may not be smoothly sucked in a sufficient amount. 
       SUMMARY OF THE INVENTION 
       [0009]    Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a cap for a vessel of cosmetics, capable of sucking high-viscosity and liquid-phase contents without an influence of discharged air as the air is discharged from an inner part of a spuit tube outside the high-viscosity and liquid-phase contents, and the spuit tube is inserted into the contents and sucks the contents. 
         [0010]    In order to accomplish the object, there is provided a cap for a vessel of cosmetics including a coupling member ( 210 ) formed on an inner circumferential surface thereof with a female screw part ( 212 ) engaged with a male screw part ( 102   a ) formed on an outer circumferential surface of an opening ( 102 ) formed in an upper portion of the vessel ( 100 ) that receives liquid-phase content, a spuit tube ( 220 ) coupled to the coupling member ( 210 ) to suck and discharge the contents received in the vessel ( 100 ), a pumping unit of the spuit tube ( 220 ) to suck the contents into the spuit tube ( 220 ) after inserting the spuit tube ( 220 ) into the vessel ( 100 ) in a state that internal air of the spuit tube ( 220 ) is partially discharged. 
         [0011]    The pumping unit of the spuit tube ( 220 ) includes a cylinder ( 214 ) which has an open upper portion and protrudes from an upper end of the coupling member ( 210 ), a through hole ( 216 ) which allows the cylinder ( 214 ) to vertically communicate with a lower portion having the female screw part ( 212 ), a lower piston ( 230 ) which is inserted into the cylinder ( 214 ) such that that an outer circumferential surface of the lower piston ( 230 ) closely makes contact with an inner circumferential surface of the cylinder ( 214 ), and has a coupling hole ( 232 ) vertically formed therein and a coupling groove ( 234 ) formed around a lower inner circumferential surface thereof such that a coupling protrusion ( 222 ) from an upper end of the spuit tube  220 , which passes through the through hole ( 216 ) upward, is inserted into the coupling groove ( 234 ), an upper piston ( 240 ) which is spaced apart from the lower piston ( 230 ) by a predetermined distance and inserted into the cylinder ( 214 ) such that an outer circumferential surface of the upper piston ( 240 ) closely makes contact with the inner circumferential surface of the cylinder ( 214 ), a pressing member ( 250 ) which is inserted into an outer portion of an upper end of the cylinder ( 214 ) and has a coupling part ( 252 ) formed on a bottom surface thereof and coupled to an upper end of the upper piston ( 240 ), an elastic member ( 260 ) which is inserted into an outer portion of the cylinder ( 214 ) to be securely mounted on a mounting part ( 218 ) formed in one of the upper end of the coupling member ( 210 ) and a lower outer portion of the cylinder ( 214 ), and elastically supports a lower portion of the pressing member ( 250 ) to apply elastic force upward, a cover member ( 270 ) which is down-inserted into an outer portion of the pressing member ( 250 ) to be coupled to an outer circumferential surface of the coupling member ( 210 ), and has a narrower upper portion and a wider lower portion to prevent the pressing member ( 250 ) and the elastic member ( 260 ) from being separating from the cover member ( 270 ), and a stop maintaining member ( 280 ) for the spuit tube, which temporarily stops the spuit tube ( 220 ) down-inserted into the opening ( 102 ) of the vessel ( 100 ), and maintains the spuit tube ( 220 ) in a stopped state. 
         [0012]    The stop maintaining member ( 280 ) of the spuit tube includes a stopper ( 282 ) which is coupled to an upper end of the vessel ( 100 ), and formed therein with a stop hole ( 282   a ) such that the spuit tube ( 220 ) is down-inserted into the stop hole ( 282   a ) in a press-fitting manner. The stop maintaining member ( 280 ) of the spuit tube includes a stopper ( 282 ) which is coupled to an upper end of the vessel ( 100 ), and formed therein with a stop hole ( 282   a ) having a wider upper portion and a narrower lower portion such that the spuit tube ( 220 ) is down-inserted into the stop hole ( 282   a ) in a press-fitting manner. 
         [0013]    The stop maintaining member ( 280 ) of the spuit tube includes a stopper ( 282 ) which is coupled to an upper end of the vessel ( 100 ), and formed therein with an insertion hole ( 282   b ) such that the spuit tube ( 220 ) is inserted into the insertion hole ( 282   b ) and at least one first stop protrusion ( 282   c ) protruding from an inner circumferential surface of the insertion hole ( 282   b ) such that the spuit tube ( 220 ) is down-inserted in a press-fitting manner. 
         [0014]    The cap of claim  2 , wherein the stop maintaining member ( 280 ) of the spuit tube includes: a stopper ( 282 ) which is coupled to an upper end of the vessel ( 100 ), and formed therein with an insertion hole ( 282   b ) such that the spuit tube ( 220 ) is inserted into the insertion hole ( 282   b ), and at least one second stop protrusion ( 224 ) protruding from an outer circumferential surface of the spuit tube ( 220 ) such that the spuit tube ( 220 ) is down-inserted into the insertion hole ( 282   b ) in a press-fitting manner. 
         [0015]    The stop maintaining member ( 280 ) of the spuit tube includes a stopper ( 282 ) which is coupled to an upper end of the vessel ( 100 ), and formed therein with a stop hole ( 282   a ) such that the spuit tube ( 220 ) is inserted into the stop hole ( 282 a). An outer portion of the spuit tube ( 220 ) is formed in multiple steps such that the spuit tube ( 220 ) is down-inserted into an insertion hole ( 282   b ) in a press-fitting manner, an insertion part ( 2260 ) is formed to a predetermined distance of a lower portion of the spuit tube ( 220 ) and has an outer diameter smaller than a diameter of the insertion hole ( 282   b ), and a fitting part ( 228 ) is formed above the insertion part ( 226 ) such that the fitting part ( 228 ) is press-fitted into the insertion hole ( 282   b ). 
         [0016]    As described above, when the spuit tube inserted into the opening of the vessel is temporarily stopped and maintained to partially discharge internal air. In this state, the spuit tube is inserted into the vessel, so that contents are sucked into the spuit tube as soon as the pressing member ascends. Accordingly, the high-viscosity and liquid-phase contents received in the vessel can be pumped without disturbance. Accordingly, the user can use the contents by performing convenient and safe pumping operations. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]      FIG. 1  is a view showing the state that air is discharged into high-viscosity and liquid-phase contents from a spuit tube and stays in the high-viscosity and liquid-phase contents according to the related art. 
           [0018]      FIG. 2  is a view showing the structure according to a third embodiment of the present invention. 
           [0019]      FIGS. 3A to 3E  are views showing the operating states according to the third embodiment of the present invention. 
           [0020]      FIG. 4  is a view showing the structure according to a fourth embodiment of the present invention. 
           [0021]      FIGS. 5A to 5E  are views showing the operating states according to a fourth embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0022]    Structures and operations of the present invention will be described with reference to  FIGS. 2 to 5E .  FIGS. 2 to 3E  show a first embodiment, and  FIGS. 4 to 5E  show a second embodiment. In the following description, the structure and the operation according to each embodiment will be described. 
         [0023]    First, the common structure of a cap for a vessel of cosmetics according to the present invention will be first described, and then mutually different structures and operations according to the first and second embodiments will be described. 
       Common Structures in First and Second Embodiments 
       [0024]    A male screw part  102   a  is formed at an opening  102  in an upper end of a vessel  100  of cosmetics, and a female screw part  212  is formed on an inner circumferential surface of a lower portion of a coupling member  210  so that the male screw part  102   a  is coupled to the female screw part  212 . 
         [0025]    In addition, the spuit tube  220 , which has a tubular structure, is inserted into an upper opening hole  102   b  formed in the opening  102  of the vessel  100 , which receives high-viscosity and liquid-phase contents to suck the liquid-phase contents. As shown in  FIG. 2 , the spuit tube  220  has a coupling protrusion  222  protruding from an upper outer portion of the spuit tube  220  in a circumferential direction. 
         [0026]    According to the present invention, a pumping unit of the spuit tube  220  is provided to discharge internal air of the spuit tube  220  when the spuit tube  220  is inserted into the vessel  100  through the opening hole  102   b  in the opening  102   b , and to suck the contents in the vessel  100 . 
         [0027]    As shown in  FIG. 2 , in the pumping unit of the spuit tube  220 , the spuit tube  220  is coupled to the coupling member  210 , the spuit tube  220  is inserted into the opening hole  102   b  in the opening  102 , the insertion operation of the spuit tube  220  is stopped and maintained at a specific location, such as a lower end or an intermediate part of the spuit tube  220  to discharge the internal air of the spuit tube  220 , and the spuit tube  220  is re-inserted into the vessel  100  through the opening hole  102   b  to suck the contents. 
         [0028]    In other words, in the pumping unit of the spuit tube  220 , a cylinder  214  having an open upper portion protrudes from an upper end of the coupling member  210 , a through hole  216  is vertically formed so that the floor of the cylinder  214  communicates with an inner portion of the female screw part  212 , the upper end of the spuit tube  220 , that is, the coupling protrusion  222  is inserted upward from the lower portion of the through hole  216 . 
         [0029]    In addition, as shown in  FIG. 2 , a lower piston  230  is inserted into the cylinder  214  in such a manner that an outer circumferential surface of the lower piston  230  slides in a close contact state with an inner circumferential surface of the cylinder  214 . A coupling hole  232  is formed in the lower piston  230  in a vertical direction, and a coupling groove  234  is formed around a lower inner circumferential surface of the coupling hole  232  so that the coupling protrusion  222  of the spuit tube  220  is inserted into the coupling groove  234  to form a coupling structure. 
         [0030]    As shown in  FIG. 2 , a upper piston  240  is inserted into the cylinder  214 , that is, an upper portion of the lower piston  230  in such a manner that an outer circumferential surface of the upper piston  240  slides in the close contact with an inner circumferential surface of the cylinder  214  similarly to the lower piston  230 . 
         [0031]    In addition, a pressing member  250  is covered on an upper outer portion of the cylinder  214  in such a manner that a coupling part  252  formed on a bottom surface of the pressing member  250  is coupled to the upper piston  240 . Accordingly, if the pressing member  250  is pressed down, the upper piston  240  may slide down in the close contact state with an inner circumferential surface of the cylinder  214 . 
         [0032]    Further, as shown in  FIG. 2 , a mounting part  218  is formed in any one of an upper end of the coupling member  210  and a lower outer portion of the cylinder  214 . An elastic member  260 , which is fitted around the outer portion of the cylinder  214 , is securely mounted in the mounting part  218 , and the upper end of the elastic member  260  elastically supports the pressing member  250 . Accordingly, after the pressing member  250  presses down the upper piston  240  while descending, the pressing member  250  and the upper piston  240  may ascend by elastic force of the elastic member  260 . 
         [0033]    A cover member  270  is down-fitted around the outer portion of the pressing member  250  and coupled to an outer circumferential surface of the coupling member  210 . 
         [0034]    In this case, the cover member  270  has an upper inner portion narrower than a lower inner portion, and the pressing member  250  has a lower outer portion wider than an upper outer portion. Accordingly, preferably, the cover member  270  is closely brought contact with the lower outer portion of the  250  to prevent the pressing member  250  from being separated from the cover member  270 , and the coupling member  210  and the elastic member  260  mounted on the pressing member  250  can be maintained in an elastic installation state by the pressing member  250  and the cover member  270 . 
         [0035]    As described above, the first embodiment to the fifth embodiment of the cap for the vessel of cosmetics according to the present invention have a common structure of the coupling member  210  coupled to the vessel  100 , the cylinder  214  and the spuit tube  220  formed at the upper portion of the coupling member  210 , the lower piston  230 , the upper piston  240 , the pressing member  250 , the elastic member  260 , and the cover member  270 , except for the design of a stop maintaining member  280  of the spuit tube which is to be described below. Hereinafter, the structure and the operation of the stop maintaining member  280  of the spuit tube will be described. 
       First Embodiment of Stop Maintaining Member  280  of Spuit Tube 
       [0036]    A stopper  282  is coupled to an upper end of the opening  102  of the vessel  100 , and a stop hole  282   a  is vertically formed through the stopper  282 . Accordingly, when the spuit tube  220  is down-inserted, the spuit tube  220  is down-inserted in a press-fitting manner. In this case, an inner diameter of the stop hole  282   a  is formed to be equal to or greater than an outer diameter of the spuit tube  220 , so that the spuit tube  220  is press-fitted into the stop hole  282   a . In addition, if a user additionally applies pressure to the pressing member  250  so that predetermined force is added to force to down-insert the spuit tube  220 , the spuit tube  220  starts to be down-inserted into the stop hole  282   a  while passing through the stop hole  282   a.    
       Second Embodiment of Stop Maintaining Member  280  of Sspuit Tube 
       [0037]    Although the second embodiment has the same configuration as that of the first embodiment, the inner sectional surface of the stop hole  282   a  is formed in a structure that an upper portion is wide and a lower portion is narrow, so that only the lower portion of the stop hole  282   a  is closely fitted around the outer portion of the spuit tube  220 . 
       Third Embodiment of Stop Maintaining Member  280  of Spuit Tube 
       [0038]    As shown in  FIG. 2 , the stopper  282  is coupled to the upper end of the opening  102  of the vessel  100 . The stopper  282  is formed therein with an insertion hole  282   b  so that the spuit tube  220  is inserted into the insertion hole  282   b  and passes through the insertion hole  282   b . At least one first stop protrusion  282  protrudes from an inner circumferential surface of the insertion hole  282   b  so that an outer circumferential surface of the spuit tube  220  closely interferes with the inner circumferential surface of the insertion hole  282   b  in a press-fitting manner. 
       Fourth Embodiment of Stop Maintaining Member  280  of Spuit Tube 
       [0039]    The stopper  282 , which is formed therein with the insertion hole  282   b  so that the spuit tube  220  is inserted into the insertion hole  282   b  and passes through the insertion hole  282   b , is coupled to the upper end of the opening  102  of the vessel  100 . As shown in  FIG. 5 , at least one second stop protrusion  224  protrudes from the outer circumferential surface of the spuit tube  220  so that the second stop protrusion  224  closely interferes with the inner circumferential surface of the insertion hole  282   b  in a press-fitting manner. 
       Fifth Embodiment of Stop Maintaining Member  280  of Spuit Tube 
       [0040]    The stopper  282 , which is formed therein with the insertion hole  282   b , is coupled to the upper end of the opening  102  of the vessel  100  similarly to that of the fourth embodiment, and the outer circumferential surface of the spuit tube  220  is formed in multiple steps as shown in  FIG. 5 . 
         [0041]    In other words, as shown in  FIG. 5 , an insertion part  220  is formed to a predetermined distance from a lower end of the spuit tube  220  and has an outer diameter narrower than a diameter of the insertion hole  282   b  so that the spuit tube  220  may freely pass through the insertion hole  282   b . A fitting part  228  is formed above the insertion part  226  in the spuit tube  220  and has an outer diameter equal to or greater than the diameter of the inner circumferential surface of the insertion hole  282   b  so that only the fitting part  228  is inserted into the insertion hole  282   b  and passes through the insertion hole  282   b  in a press-fitting manner. 
         [0042]    Hereinafter, the operation of the cap for the vessel of cosmetics according to the present invention having the above configuration will be described with reference to  FIGS. 2 to 5E . 
         [0043]      FIGS. 2 to 3E  show the third embodiment of the present invention. Since the first and second embodiments are substantially identical to that of the third embodiment in description, the details of the first and second embodiments will be omitted, and only the third embodiment will be representatively described below. 
         [0044]      FIG. 2  shows the spuit tube  220  before the spuit tube  220  is inserted into the stop hole  282   a  of the stopper  282  coupled to the opening  102  in an initial stage. When a user inserts the spuit tube  220  into the stop hole  282   a  in the state of grasping the pressing member  250  and the  290   c  in a hand of the user, the outer circumferential surface of the spuit tube  220  interferes with a first stop protrusion  282   c  protruding the inner circumferential surface of the stop hole  282   a , so that the insertion operation of the spuit tube  220  is temporarily stopped and maintained. 
         [0045]    In this case, if the user additionally presses down the pressing member  250 , since the pressing member  250  is pressed down in the state that the spuit tube  220  is stopped and maintained, the cylinder  214 , the coupling member  210 , the pressing member  250 , and the cover member  270  descend in the state that the inner circumferential surface of the cylinder  214  closely makes contact with the outer portion of the lower piston  230 . Accordingly, as shown in  FIG. 3B , the lower surface of the upper piston  240  makes contact with the top surface of the lower piston  230 , so that air is discharged from the inner part of the spuit tube  220 . 
         [0046]    In this case, if the user additionally presses down the pressing member  250 , the coupling part  252  of the pressing member  250  makes contact with the upper piston  240  and the lower piston, and the upper end of the spuit tube  220  is coupled to the lower piston  230 . Accordingly, since force to press the pressing member  250  is applied to the spuit tube  220  without change, the spuit tube  220  stopped and maintained by the stopper  282  ascends in the press-fitting manner with the first stop protrusion  282   c  as shown in  FIG. 3C . In this case, the coupling member  210  is stopped and maintained by the opening  102 , so that the descending operation of the spuit tube  220  is stopped. 
         [0047]    If the user more strongly presses the pressing member  250 , since the coupling member  210  interferes with the opening  102 , the pressing member  250  compresses the elastic member  260  while the upper piston  240  and the lower piston descending in the cylinder  214 . 
         [0048]    In this case, as shown in  FIG. 3C , the air layer formed at a lower portion of the lower piston  230  is discharged through a through hole  216  of the coupling member  210 . 
         [0049]    If the force to press the pressing member  250  is released after the spuit tube  220  is inserted into the vessel  100  as described above, since the spuit tube  220  is stopped and maintained in the press-fitting manner with the first stop protrusion  282   c , only the pressing member  250  ascends by the elastic restoring force of the elastic member  260 . In this case, the upper piston  240  ascends together, so that the contents in the vessel  100  of cosmetics may be sucked into the spuit tube  220 . 
         [0050]    Accordingly, as the user grasps the cover member  270  and then lifts up the spuit tube  220 , thereby separating the spuit tube  220  from the stopper hole  282   a . Then, the user presses down the pressing member  250  again to discharge the contents from the inner part of the spuit tube  220  and to use the contents. 
         [0051]    In the first and second embodiments, the stop hole  282   a  is press fitted with the spuit tube  220  in the state that only the first stop protrusion  282  is not formed. Accordingly, the descriptions of the operations in the first and second embodiments will be substituted with the description of the operation in the third embodiment. 
         [0052]    Meanwhile,  FIG. 4  shows the fourth and fifth embodiments of the present invention. The fifth embodiment is shown in  FIGS. 4 to 5E , and the description of the operation in the fourth embodiment will be substituted with the operation of the structure of the second stop protrusion  224  protruding from the outer portion of the spuit tube  220  of  FIG. 4 . 
         [0053]    According to the fifth embodiment, as shown in  FIG. 4 , the outer portion of the spuit tube  220  is designed in multiple steps. The size of the lower diameter of the spuit is formed to be smaller than the diameter of the insertion hole  282   b  to form the insertion part  226 , so that the spuit tube  220  may be freely inserted into the insertion hole  282   b  or separated from the insertion hole  282   b . The fitting part  228  is formed above the insertion part  226  of the spuit tube  220  to have the outer diameter equal to or larger than the inner diameter of the insertion hole  282   b  so that the spuit tube  220  interferes with the insertion hole  282   b  of the stopper  22  in the press-fitting manner. 
         [0054]    Accordingly, if the spuit tube  220  is inserted into the insertion hole  282   b , the insertion part  226  is freely inserted into the insertion hole  282   b  without interference with the insertion hole  282   b  as shown in  FIG. 5A , the fitting part  228  formed above the insertion part  226  interferes with the insertion hole  282   b , so that the fitting part  228  is stopped and maintained as shown in  FIG. 5A . 
         [0055]    In this case, if the user additionally presses down the pressing member  250 , the cylinder  214  descends in the state that the inner circumferential surface of the cylinder  214  closely makes contact with the outer circumferential surface of the lower piston  230 . Accordingly, the upper surface of the lower piston  230  closely makes contact with the lower surface of the piston  240  as shown in  FIG. 5B , so that the air is discharged from the inner part of the spuit tube  220 . 
         [0056]    In addition, if the user additionally presses down the pressing member  250 , since the coupling part  252  of the pressing member  250  is coupled to the upper piston  240 , the lower piston  230  closely makes contact with the upper piston  240 , and the upper end of the spuit tube  220  is coupled to the lower piston  230 , the spuit tube  220  descends until the coupling member  210  interferes with the opening  102  as shown in  FIG. 5C  in the state that the fitting part  228  of the spuit tube  220  is press-fitted into the insertion hole  282   b.    
         [0057]    In addition, if the user more additionally presses down the pressing member  250 , the pressing member  250  compresses the elastic member  260  while pressing down the upper piston  240  and the lower piston as shown in  FIG. 5D , so that the lower piston  230  descends to the bottom surface of the cylinder  214 . 
         [0058]    In this case, the air layer formed at the lower portion of the lower piston  230  shown in  FIG. 5C  is discharged through the through hole  216  of the coupling member  210 . 
         [0059]    Accordingly, as shown in  FIG. 5D , after the lower piston  230  descends to the bottom surface of the cylinder  214 , the force to press the pressing member  250  is released. In this case, as shown in  FIG. 5E , the pressing member  250  and the upper piston  240  ascend by the elastic restoring force of the elastic member  260  while the contents are sucked into the spuit tube  220 . 
         [0060]    Therefore, the user separates the spuit tube  220  from the insertion hole  282   b  by lifting up the spuit tube  220  after grasping the cover member  270 , and presses down the pressing member  250  again so that the contents are discharged from the inner part of the spuit tube  220  and used. 
         [0061]    In the fourth embodiment, the spuit tube  220  is press-fitted into the insertion hole  282   a  by the second stop protrusion  224  in the state that only the second stop protrusion  224  is formed on the outer portion of the spuit. Accordingly, the description of the operation in the fourth embodiment will be substituted with the description of the operation in the fifth embodiment. 
         [0062]    Although the exemplary embodiments of the present invention have been described, it is understood that the present invention should not be limited to these exemplary embodiments but various changes and modifications can be made by one ordinary skilled in the art within the spirit and scope of the present invention as hereinafter claimed.