Abstract:
A discharge pump discharging contents such as cosmetics, shampoos, detergents, or perfumes accommodated in a container by pushing the discharge pump to the outside, more particularly to, a discharge pump making sounds when pumping contents out. The discharge pump making sounds when pumping, characterized in that when a push button is pushed, a content within a container is pumped and discharged to the outside, and when force pushing the push button is released, the push button returns to its original state by a coil spring. A sound making unit for making sounds, which contacts and overlaps all or a portion of a plurality of spiral parts constituting the coil spring when compressed, and returns to its original state while scratching the spiral parts contacting the sound making unit when tensioned, thereby making the sounds, is disposed on an end of the coil spring and bent from the spiral part.

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
       [0001]    Korean Patent Application KR 10-2013-0104978 with a filing date of Sep. 2, 2013, is incorporated herein by reference. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a discharge pump discharging contents such as cosmetics, shampoos, detergents, or perfumes accommodated in a container by pushing the discharge pump to the outside, more particularly to, a discharge pump making sounds when pumping contents out. 
         [0004]    2. Description of the Related Art 
         [0005]    Typically, containers for cosmetics, shampoos, detergents, and perfumes are provided with discharge pumps to discharge contents therein by pumping to the outside. The discharge pumps are widely used because the discharge pumps have an advantage of discharging easily a predetermined amount of contents while storing the contents in the container. 
         [0006]    Since the typical discharge pumps do not make any sounds when pumping and discharging the contents out, it may difficult to identify whether the pumping is smoothly being performed if the discharge pumps are pumped without checking the pumping with the naked eyes. Also, it may difficult to identify the pumped degree even if the pumping is checked with the naked eyes. 
         [0007]    To solve such limitations, a discharge pump making sounds when pumping is developed and disclosed in Korean Utility Model Gazette No. 20-0294063 (hereinafter, referred to as a ‘related document’). 
         [0008]    According to the related document, the discharge pump makes sounds whenever a nozzle button is pressed to pump contents, thereby to easily notify an operation state of the pumping and to easily adjust the number of pumping. To realize this, the discharge pump includes a valve stopper disposed on a lower end of a valve rod connected to the nozzle button, and a plurality of projections protrude from an inner circumferential surface of a piston supporting member on which the valve rod slid. Thus, when the valve stopper of the valve rod passes through the projections, the valve stopper may contact the projections to make sounds. 
         [0009]    In the case of the discharge pump according to the related document, the valve stopper has to be integrally injection-molded with the lower end of the valve rod, and also the plurality of projections have to be integrally injection-molded with the inner circumferential surface of the piston support member. Thus, the discharge pump according to the related document has a complex structure and needs a lot of manufacturing costs. Also, when the valve stopper and the projection are worn due to use for long periods of time, the discharge pump does not smoothly make sounds. Furthermore, since all of the valve stopper and the piston support member have to be replaced when replaced, their replacement costs may increase. 
       SUMMARY OF THE INVENTION 
       [0010]    Accordingly, the present invention is directed to a discharge pump that substantially obviates one or more problems due to limitations and disadvantages of the related art. The discharge pump makes sounds through a simple sound making structure when pumping to realize a simple structure thereof and reduce manufacturing and replacement costs. 
         [0011]    Embodiments of the present invention provide a discharge pump making sounds when pumping, the discharge pump is characterized in that when a push button is pushed, a content within a container is pumped and discharged to the outside, and when force pushing the push button is released, the push button returns to its original state by a coil spring, wherein a sound making unit for making sounds, which contacts and overlaps all or a portion of a plurality of spiral parts constituting the coil spring when compressed, and returns to its original state while scratching the spiral parts contacting the sound making unit when tensioned, thereby making the sounds, is disposed on an end of the coil spring and bent from the spiral part. 
         [0012]    In some embodiments, the sound making unit may include a first bending part bent from the lowermost spiral part to overlap the spiral parts when compressed; and a second bending part bent from an end of the first bending part to scratch the spiral parts when tensioned, thereby making the sounds. 
         [0013]    In other embodiments, the first bending part may be inclinedly bent toward a central portion of the spiral parts so that the first bending part contacts the spiral parts when the spiral parts are compressed and tensioned, the second bending part may be inclinedly bent in the inclined direction of the spiral part. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  is a perspective view of a cosmetic container to which a discharge pump is applied according to a first embodiment of the present invention. 
           [0015]      FIG. 2  is an exploded perspective view of the cosmetic container of  FIG. 1 . 
           [0016]      FIG. 3  is a cross-sectional view of the cosmetic container of  FIG. 1 . 
           [0017]      FIG. 4  is an exploded perspective view of the discharge pump of  FIGS. 2 and 3 . 
           [0018]      FIG. 5  is a cross-sectional view of the discharge pump. 
           [0019]      FIG. 6  is a perspective view of a pump body. 
           [0020]      FIG. 7  is a cross-sectional view of the pump body. 
           [0021]      FIG. 8  is a perspective view of a push button. 
           [0022]      FIG. 9  is a cross-sectional view of the push button. 
           [0023]      FIG. 10  is a perspective view of a valve. 
           [0024]      FIG. 11  is a plan view of the valve. 
           [0025]      FIG. 12  is a cross-sectional view of the valve. 
           [0026]      FIG. 13  is a perspective view of an end cap. 
           [0027]      FIG. 14  is a cross-sectional view of the end cap. 
           [0028]      FIG. 15  is a perspective view of a valve holder. 
           [0029]      FIG. 16  is a cross-sectional view of the valve holder. 
           [0030]      FIG. 17  is a perspective view of a spring. 
           [0031]      FIG. 18  is a side view of the spring. 
           [0032]      FIGS. 19 and 20  are views illustrating a structure for making sounds when the spring is operated. 
           [0033]      FIG. 21  is a perspective view of a connection tool. 
           [0034]      FIG. 22  is a cross-sectional view of the connection tool. 
           [0035]      FIG. 23  is a cross-sectional view illustrating a state where content in a container body flow into the discharge pump. 
           [0036]      FIG. 24  is a cross-sectional view illustrating a state where the content introduced into the discharge pump is discharged to the outside. 
           [0037]      FIG. 25  is a cross-sectional view of a cosmetic container to which a discharge pump is applied according to a second embodiment of the present invention. 
           [0038]      FIG. 26  is a cross-sectional view of the discharge pump of  FIG. 25 . 
           [0039]      FIG. 27  is a cross-sectional view of a pump body. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0040]    Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. 
         [0041]    Hereinafter, a discharge pump making sounds when pumping according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 
         [0042]      FIG. 1  is a perspective view of a cosmetic container to which a discharge pump is applied according to a first embodiment of the present invention, and  FIG. 2  is an exploded perspective view of the cosmetic container of  FIG. 1 . 
         [0043]    A cosmetic container to which a discharge pump is applied according to the present invention includes a discharge pump  1 , a container body  2 , a lid  3 , and a pumping tube  4 . 
         [0044]    The discharge pump  1  is coupled to an opened upper end, i.e., an inlet of the container body  2  to allow a user to discharge liquid content in a pumping manner. 
         [0045]    The container body  2  has an upwardly opened circular tube shape. The container body  2  is filled with liquid content such as a cosmetic, a shampoo, a detergent, a perfume, or the like. 
         [0046]    The lid  3  is detachably fixed to the outside of the discharge pump  1  to cover and protect the discharge pump  1  when the discharge pump  1  is not used. 
         [0047]      FIG. 3  is a cross-sectional view of the cosmetic container of  FIG. 1 . 
         [0048]    The container body  2  includes the pumping tube  4  having a discharge passage therein to smoothly discharge the content. The pumping tube  4  has an upper end connected to the discharge pump  1  and a lower end spaced a predetermined distance from a bottom of the container body  2 . 
         [0049]      FIG. 4  is an exploded perspective view of the discharge pump of  FIGS. 2 and 3 .  FIG. 5  is a cross-sectional view of the discharge pump. 
         [0050]    The discharge pump  1  according to the present invention includes a pump body  100 , a push button  200 , a valve  300 , an end cap  400 , a valve holder  500 , a spring  600 , and a connection tool  700 . 
         [0051]    The pump body  100  is coupled to an inlet of the container body  2  to introduce the content through a lower end thereof. The valve  300 , the end cap  400 , the valve holder  500 , the spring  600 , and the connection tool  700  are disposed within the pump body  100 . 
         [0052]    The push button  200  is elevatably disposed on an upper end of the pump body  100  to discharge the content to the outside by repeatedly pressing and releasing the push button  200  by the user. 
         [0053]    The valve  300  is interlocked with the push button  200  to open or close the lower end of the pump body  100  while being elevated, thereby controlling the introduction of the content into the pump body  100 . Here, the valve  300  may serve as a passage for transferring the introduced content to the push button  200 . 
         [0054]    The end cap  400  may shield a space in which the content introduced in the pump body  100  is filled to prevent the content from leaking to the outside of the space and support a lower end of the spring  600 . 
         [0055]    The valve holder  500  together with the end cap  400  may shield the space where the content introduced in the pump body  100  is filled. The valve holder  500  may allow the content to flow into the valve  300  when the valve descends. Also, the valve holder  500  may block the introduction of the content into the valve  300  when the valve ascends. 
         [0056]    The spring  600  may elastically support the push button  200  so that the push button  200  returns to its original state when force pressing the push button  200  is released. 
         [0057]    The connection tool  700  may connect the push button  200  to the valve  300  and support an upper end of the spring  600 . 
         [0058]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 6  is a perspective view of the pump body, and  FIG. 7  is a cross-sectional view of the pump body. 
         [0059]    The pump body  100  includes a container coupling unit  110 , a valve mounting unit  120 , and a content inflow unit  130 , which are integrally injection-molded. 
         [0060]    The container coupling unit  110  is coupled to the inlet of the container body  2 . The container coupling unit  110  includes a cylindrical outer coupling tube  111  fitted to the outside of the inlet of the container body  2  and a cylindrical inner coupling tube  112  which is integrally provided within the outer coupling tube  111  with a predetermined distance and fitted to the inside of the inlet of the container body  2 . The outer coupling tube  111  has an upper end integrally connected to a central portion of the inner coupling tube  112 . The outer coupling tube  111  is firmly fixed to the outside of the inlet of the container body  2  by a projection and groove. Thus, the pump body  100  is firmly coupled to the inlet of the container body  2 . 
         [0061]    The valve  300 , the end cap  400 , the valve holder  500 , the spring  600 , and the connection tool  700  are mounted within the valve mounting unit  120 . The valve mounting unit  120  has a cylinder shape and a central portion integrally connected to an upper end of the inner coupling tube  112  within the inner coupling tube  112 . The push button  200  is elevatably inserted inside the valve mounting unit  120  and, a plurality of concave grooves  121  are lengthily defined in a longitudinal direction at a predetermined distance in an inner circumferential surface of the valve mounting unit  120 . 
         [0062]    When the valve  300  is elevated, the content within the container body  2  is introduced into the content inflow unit  130 . The content inflow unit  130  includes a cylindrical content inflow tube  131  extending from a lower end of the valve mounting unit  120  and a tube fixing tube  132  extending downward from a lower end of the content inflow tube  131 . The content inflow tube  131  to which the contents are introduced therein when the valve  300  is operated. Here, the valve  300  may be elevated within the content inflow tube  131  to introduce the content into the content inflow tube  131 , and the tube fixing tube  132  may have a diameter less than that of the content inflow tube  131  so that an upper end of the pumping tube  4  is fixedly inserted into the tube fixing tube  132 . A connection unit  133  is disposed between the outside of the upper end of the content inflow tube  131  and the lower end of the valve mounting unit  120  to integrally connect thereto. 
         [0063]    An air ventilation hole  131   a  is defined in a side surface of the content inflow tube  131  so that air is ventilated between the outside and inside of the content inflow tube  131 . The air ventilating hole  131   a  has an outlet disposed under the connection unit  133 . 
         [0064]    A shield projection  132   a  protrudes from an upper portion of the inside of the tube fixing tube  132  so that the tube fixing tube  132  is blocked by a lower end of the valve stem  310  to prevent the content from ascending when the valve  300  descends and is opened to allow the content to ascend when the valve  300  ascends. Here, a first inflow hole is defined by the shield projection  132   a . An insert limitation jaw  132   b  for tightening the inserted pumping tube  4  to fix the pumping tube  4  to the tube fixing tube  132  protrudes under the insert limitation jaw  132   b.    
         [0065]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 8  is a perspective view of the push button, and  FIG. 9  is a cross-sectional view of the push button. 
         [0066]    The push button  200  includes an elevation unit  210 , a push surface  220 , and a content discharge unit  230 , which are integrally injection-molded. 
         [0067]    The elevation unit  210  may have a cylindrical shape and be elevatably inserted into the valve mounting unit  120 . 
         [0068]    The push surface  220  has a surface shape which shields an opened upper end of the elevation unit  210  and is pushed by a user&#39;s hand. 
         [0069]    The content discharge unit  230  serves as a passage through which the content transferred through the valve  300  is discharged to the outside. The content discharge unit  230  includes a cylindrical vertical tube  231 , which is vertically disposed on a bottom surface of the push surface  220  and has a content transfer path therein, and a discharge tube  232 , which is horizontally integrated with a lower portion of the push surface  220  and has a content discharge path therein. A valve fixing groove  231   a  to which the upper end of the valve  300  is inserted and fixed is defined in a lower end of the inside of the vertical tube  231 . The upper end of the valve  300  may be firmly fixed to the valve fixing groove  231   a  by the projection and groove. 
         [0070]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 10  is a perspective view of the valve,  FIG. 11  is a plan view of the valve, and  FIG. 12  is a cross-sectional view of the valve. 
         [0071]    The valve  300  includes the valve stem  310  and a circular protrusion  320 . 
         [0072]    The valve stem  310  has a vertical transfer path  311 , which is lengthily disposed therein and has an opened upper end and a closed lower end, and a second inflow hole  312 , which is horizontally disposed in a side portion thereof to introduce the content into the vertical transfer path  311 . The closed lower end of the valve stem  310  may pass through the first inflow hole to open or close the first inflow hole. The upper end of the valve stem  310  may be firmly fixed to the valve fixing groove  231   a  of the push button  200  by the projection and groove. 
         [0073]    The circular protrusion  320  is disposed spaced apart from the second inflow hole  312  defined in the side portion of the valve stem  310  toward the closed other end of the valve stem  310 . Thus, when the valve stem ascends, the circular protrusion  320  hooks the valve stem  310  to the valve holder  500  to prevent the valve stem  310  from ascending no longer. A plurality of fine holes  321  through which the liquid content filled into the content inflow tube  131  pass are radially disposed spaced apart from each other in the circular protrusion  320 . 
         [0074]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 13  is a perspective view of the end cap, and  FIG. 14  is a cross-sectional view of the end cap. 
         [0075]    The end cap  400  includes a spring seat unit  410  and a spring support unit  420 , which are integrally injection-molded. 
         [0076]    The spring seat unit  410  is fixed to the upper end of the content inflow tube  131  to seat and support the lower end of the spring  600  on a top surface thereof while shielding the opened upper end of the content inflow tube  131 . The spring seat unit  410  includes a cylindrical fixing tube  411  fixed to the outside of the content inflow tube  131  and a ring-shaped seat surface  412  horizontally extending from an upper end of the fixing tube  411  to seat and support the lower end on a top surface thereof. The upper end of the content inflow tube  131  may be firmly fixed to an inner circumferential surface of the fixing tube  411  by the projection and groove. 
         [0077]    The spring support unit  420  is provided as a cylindrical tube vertically integrated with a central portion of the seat surface  412 . The valve stem  310  slidably passes through inside the spring support unit  420 . The lower end of the spring  600  is fitted outside the spring support unit  420  to stably maintain the lower end of the spring  600  in position. 
         [0078]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 15  is a perspective view of the valve holder, and  FIG. 16  is a cross-sectional view of the valve holder. 
         [0079]    The valve holder  500  is fitted between the valve stem  310  and the spring support unit  420  in the content inflow tube  131  to prevent the content from leaking between the valve stem  310  and the spring support unit  420 . Also, the valve stem  310  passes through the valve holder  500 , and thus the valve holder  500  may open the second inflow hole  312  when the valve stem  310  descends and may shield the second inflow hole  312  when the valve stem  310  ascends. 
         [0080]    The valve holder  500  includes a cylindrical valve adhesion unit  510  closely attached to an outer surface of the valve stem  310  and a cylindrical inflow tube adhesion unit  520  closely attached to an inner surface of the content inflow tube  131 . 
         [0081]    A gap groove  511  is disposed in a side of the circular protrusion  320  of the valve  300  in the inner circumference surface of the valve adhesion unit  510  to generate a gap without contacting the valve stem  310 . Thus, when the valve stem  310  descends to allow the second inflow hole  312  to overlap the gap groove  511 , the content introduced to the gap groove  511  may be introduced into the valve stem  310  through the second inflow hole  312 . On the other hand, when the valve stem  310  ascends to allow the second inflow hole  312  to be dislocated with respect to the gap groove  511 , the content is not introduced into the valve stem  310  through the second inflow hole  312  by the inner circumferential surface of the valve adhesion unit  510  which is in contact with the valve stem  310 . 
         [0082]    An inflow tube adhesion unit  520  has a shape of which a central portion is further recessed inward than upper and lower portions thereof. Thus, the central portion of the inflow tube adhesion unit  520  does not contact the inner circumferential surface of the content inflow unit  130 , and only the upper and lower portions of the inflow tube adhesion unit  520  contact the inner circumferential surface of the content inflow unit  130 . 
         [0083]    The valve adhesion unit  510  and the inflow tube adhesion unit  520  of the valve holder  500  are integrally injection-molded. 
         [0084]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 17  is a perspective view of the spring,  FIG. 18  is a side view of the spring, and  FIGS. 19 and 20  are views illustrating a structure for making sounds when the spring is operated. 
         [0085]    The spring  600  of which the lower end is supported by the end cap  400 , and the upper end is supported by the connection tool  700  in the state where the spring is fitted outside the valve stem  310  may elastically support the push button  200  with respect to the end cap  400 . Thus, when the user&#39;s hand is released from the push button  200  in the state where the user pushes the push button  200 , the push button  200  may be ascend to return to its original state by restoring force of the spring  600 . 
         [0086]    The spring  600  may be a coil spring including a plurality of spiral parts  610  which are connected to each other. A sound making unit  620  may contact and overlap all or a portion of the plurality of spiral parts  610  when the spiral parts  610  are compressed and may return to its original position while scratching the spiral parts  610  contacting the sound making unit  620  when each of the spiral parts  610  is tensioned, thereby making sounds. As shown in the drawings, the sound making unit  620  may be disposed on only one end of the spring  600 . Alternatively, the sound making units  620  may be disposed on both ends of the spring  600 . If the sound making units  620  are disposed on both ends of the spring  600 , the sound making units  620  may be disposed at different positions to prevent the sound making units  620  from collide with each other. 
         [0087]    The sound making unit  620  includes a first bending part  621  bent from the spiral part  610  disposed on the end of the spring  600  to overlap the spiral parts  610  when spiral parts  610  are compressed and a second bending part  622  bent from an end of the first bending part  621  to make sounds while scratching the spiral part  610  when the spiral parts  610  are tensioned. 
         [0088]    The first bending part  621  may be inclinedly bent toward a central portion of the spiral parts  610  so that the first bending part  621  contacts the spiral part  610  when the spiral parts  610  are compressed and tensioned. That is, since the first bending part  621  has elastic force in itself, when the end portion of the first being unit  621  is bent and closely attached to the spiral parts  610 , the second bending part  622  may make sounds while strongly scratching the second bending part  621 . 
         [0089]    The second bending part  622  may be inclinedly bent in the inclined direction of each of the spiral part  610  to expand the portion contacting the spiral part  610 . That is, if the contact area of the second bending part  622  is expanded in a state where the second bending part  622  is strongly attached to the spiral part  610 , the sounds may intense by the expanded contact area. 
         [0090]    According to the sound making unit  620  configured as described above, the sound making unit  620  may make sounds when the spring  600  is compressed as illustrated in  FIG. 9 . Alternatively, the making unit  620  may make intense sound when the spring  600  is tensioned as illustrated in  FIG. 20 . While the spring  600  is tensioned, the push button  200  pressing the spring  600  may return to its original state. 
         [0091]    As shown in  FIG. 19 , when the spring  600  is compressed, all of the first and second bending parts  621  and  622  are in contact with the outer surface of the spiral part  610 . In the process of compressing, the second bending part  622  may scratch the spiral part  610  to make sounds while the second bending part  622  contacts the outside portion of the spiral part  610  after the second bending part  622  contacts the lower portion of the spiral part  610 . 
         [0092]    As shown in  FIG. 20 , when the spring  600  is tensioned, the second bending part  622  may scratch the spiral part  610  to make sounds while the second bending part  622  contacts the outside portion of the spiral part  610  after the second bending part  622  contacts the upper portion of the spiral part  610 . Here, since the first bending part  621  has a shape bent toward the inside of the spiral part  610 , the second bending part  622  may effectively contact the upper portion of the spiral part  610  while being tensioned. 
         [0093]    As described above, since a portion of the spring  600  is bent to form the sound making unit  620 , the sound making unit  620  may make sounds through a simple structure when pumping to easily adjust the number of pumping and also reduce manufacturing and replacing costs due to the whole simple structure thereof. 
         [0094]      FIG. 5  is a cross-sectional view of the discharge pump,  FIG. 21  is a perspective view of the connection tool, and  FIG. 22  is a cross-sectional view of the connection tool. 
         [0095]    The connection tool  700  includes a connection unit  710  and a spring support unit  720 , which is integrally injection-molded. 
         [0096]    The connection unit  710  may have a hollow tube shape to provide the content transfer path therein. The connection unit  710  has an upper end inserted and fixed to the vertical tube  231  of the push button  200  and a lower end to which the opened upper end of the valve stem  310  is inserted and fixed. The upper end of the spring  600  is fitted outside the lower end of the connection unit  710 . 
         [0097]    The spring support unit  720  may extend from the outside of the connection unit  710  to support the upper end of the spring  600 . A spring fitting groove  730  is disposed between the spring support unit  720  and the connection unit  710 . 
         [0098]      FIG. 23  is a cross-sectional view illustrating a state where the content within the container body flow into the discharge pump, and  FIG. 24  is a cross-sectional view illustrating a state where the content introduced into the discharge pump is discharged to the outside. 
         [0099]    As shown in  FIG. 23 , when the valve  300  ascends, the first inflow hole formed in the tube fixing tube  132  is opened to introduce the content within the container body  2  into a space of the content inflow tube  131  through the pumping tube  4  and the tube fixing tube  132  by a pressure difference. That is, since the content within the content inflow tube  131  are discharged to the outside when the valve stem  310  descends, the inside of the content inflow tube  131  becomes to a state approaching a vacuum state. Thus, the content within the container body  2  are smoothly introduced into the content inflow tube  131 . 
         [0100]    Here, since the second inflow hole  312  defined in the valve stem  310  is blocked by the valve holder  500 , the content within the content inflow tube  131  may not be introduced into the valve stem  310 . 
         [0101]    As shown in  FIG. 24 , when the user pushes the push button  200  to allow the valve stem  310  to descend, the lower end of the valve stem  310  may block the first inflow hole of the tube fixing tube  132  to prevent the content within the container body from being introduced into the content inflow tube  131 . Simultaneously, the second inflow hole  312  defined in the valve stem  310  may be opened to introduce the content within the content inflow tube  131  into the vertical transfer path  311  of the valve stem  310  through the second inflow hole  312 , and then to discharge the content through the connection tool  700  and the push button  200 . 
         [0102]      FIG. 25  is a cross-sectional view of a cosmetic container to which a discharge pump is applied according to a second embodiment of the present invention. 
         [0103]    A pressing holder  5  for smoothly discharging content is slidably inserted into container body  2 . The pressing holder  5  may press the liquid content and push to an opened portion of the container body  2 . The liquid content is filled between a discharge pump  1  and the pressing holder  5  from the inside of the container body  2 . 
         [0104]    An air inflow hole  2   a  through which air is introduced between the pressing holder  5  and a closed bottom surface of the container body  2  is defined in a bottom surface of the container body  2 . 
         [0105]    The pressing holder  5  may ascend to push the liquid content up due to a pressure difference between a portion filled with the liquid content and a portion filled with the air with respect to the pressing holder  5 . That is, when the liquid content is discharged, a space generated by discharging the liquid content may become to a vacuum state, and thus a pressure in an upper side of the pressing holder  5  may be lowered than that in a lower side of the pressing holder  5 . Therefore, the pressing holder  5  may smoothly ascend to prevent an empty space from being generated in the upper side of the pressing holder  5 . 
         [0106]      FIG. 26  is a cross-sectional view of the discharge pump of  FIG. 25 , and  FIG. 27  is a cross-sectional view of a pump body. 
         [0107]    The discharge pump  1  according to the current embodiment includes a pump body  100 , a push button  200 , a valve  300 , an end cap  400 , a valve holder  500 , a spring  600 , and a connection tool  700 . Here, the components except the pump body  100  are the same as those described in the first embodiment, and thus the redundant description will be omitted. 
         [0108]    The pump body  100  includes a container coupling unit  110 , a valve mounting unit  120 , and a content inflow unit  130 A, which are integrally injection-molded. Here, the components except the content inflow unit  130 A are the same as those described in the first embodiment, and thus the redundant description will be omitted. Like the reference numerals refer to identical components having an identical function as described in the first embodiment. 
         [0109]    The content inflow unit  130 A provides a space in which the content of the container body  2  is introduced when the valve  300  is elevated. The content inflow unit  130 A includes an inflow tube support holder  131 A extending from a lower end of the valve mounting unit  120  and having a closed lower end to support a content inflow tube (that will be described below) therein and a cylindrical content inflow tube  132 A vertically disposed from an inner bottom of the inflow tube support holder  131 A. An inflow port  133 A having an inflow hole  133   a  connected to the content inflow tube  132 A to introduce the content of the container body  2  into the content inflow tube  132 A protrudes downward from a bottom surface of the inflow tube support holder  131 A. Each of the inflow tube support holder  131 A and the content inflow tube  132 A may have an opened upper end. 
         [0110]    The discharge pump making sounds when pumping according to the present invention may have following effects. 
         [0111]    Firstly, since the portion of the spring is bent to form the sound making unit, the sound making unit may make sounds through the simple structure when pumping to easily adjust the number of pumping and also reduce manufacturing and replacing costs due to the whole simple structure thereof. 
         [0112]    Secondly, the content within the container body may be easily discharged to the outside by being pushed only by the user&#39;s hand. Also, the inflow of the content may be adjusted by using only the valve without using components corresponding to an opening/closing member according to the related art. Also, since the portion (corresponding to a housing in the related art) to which the valve is accommodated is integrated with the portion (corresponding to a closer in the related art) coupled to the container body, the pumping structure may be simplified when compared to that in the related art. Therefore, the discharge pump according to the present invention may be easily assembled and manufactured to reduce the manufacturing costs. 
         [0113]    As described above, although the discharge pump of the present invention is described with reference to the exemplary embodiments, the present invention is not limited to specific embodiments. The invention may be freely modified by a person skilled in the art within the scope of the claims hereinafter. 
         [0114]    It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Thus, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.