Patent Publication Number: US-11034503-B1

Title: Container for mixing heterogeneous contents

Description:
BACKGROUND 
     1. Field of the Invention 
     One aspect of the present disclosure relates to a container for mixing heterogeneous contents, and more particularly, to a container for mixing heterogeneous contents in which a second container is coupled to a lower portion of a container coupling space of a first container, and a discharge device and a discharge passage of the second container are connected to each other through a sealing member formed of a soft material, so that the first and second containers can be easily coupled to each other, contents can be prevented from being contaminated due to external foreign substances during the coupling process, and the second container can be stably maintained in a sealed state. 
     2. Description of the Related Art 
     In general, there are many cases where two or more different contents are mixed and used in order to multiply the efficacy or effect of cosmetics or medicines contained in a container. 
     However, after the contents are mixed and then the mixed contents are contained in a single container, when the mixed contents are distributed or stored, a chemical reaction may occur in the container while causing the mixed contents to be coagulated or precipitated, so that a discharge error may occur or the mixed contents may be discolored or deteriorated. 
     Thus, according to the related art, after different contents are stored in separate containers, respectively, the contents are individually discharged and mixed directly when used by a user or the different contents are stored in separate containers. Then, the contents are used after inlets of the two containers are opened and the contents are mixed in a separate container. However, according to the above-described method, the user is required to directly mix and use the contents stored in a separate container, so the risk of loss increases and the portability decreases. 
     Therefore, in recent years, a container for mixing heterogeneous materials has been developed such that different contents may be mixed and used according to the manipulation of a user when necessary, where the different contents are stored in a single container while being isolated from each other. 
     As the related art, Korean Patent Registration No. 10-1923306 discloses a heterogeneous material mixing container. According to the above related art, an inner container is inserted into an outer container, each of the container is equipped with one of pump sets, and mutually different cosmetics are stored in the outer container and the inner container, respectively, so that the different kinds of cosmetic contents can be simultaneously discharged, mixed and used once a pumping is performed. 
     However, since the related art has a structure in which the inner container is accommodated together with the cosmetic contents stored in the outer container, external foreign substances placed on an outer periphery of the inner container enter an inside of the outer container in the process of assembling or disassembling the inner container into or from the outer container, and thus the cosmetic contents stored in the outer container are contaminated. 
     In addition, according to the related art, when the outer container and the inner container containing mutually different contents are packed separately and then assembled and used by a purchaser, the entire container is inserted into an inlet portion of the opened outer container and thus the contents stored in the outer container overflow to the outside due to the volume or sudden insertion of the inner container, thereby contaminating the surroundings, and interrupting the assembling work. 
     DOCUMENTS OF RELATED ART 
     Patent Documents 
     Korean Utility Model Registration No. 20-0390095 (issued on Jul. 18, 2005) entitled as“ESSENCE COSMETIC CASE FOR MIXING POWDER” 
     Korean Patent Registration No. 10-1923306 (issued on Nov. 28, 2018) entitled as“HETEROGENEOUS MATERIAL MIXING CONTAINER” 
     SUMMARY 
     One aspect of the present disclosure provides a container for mixing heterogeneous contents, wherein first and second containers for storing mutually different contents are connected to first and second discharge devices, respectively, to allow the heterogeneous contents to be discharged to the outside at once by a press action of a push button, in which a second container is coupled to a lower portion of a container coupling space of a first container, and a discharge device formed in the second container and a discharge passage formed in a push button are connected to each other as the first container is coupled to the second container, so that the first and second containers can be easily coupled to each other, and contents can be prevented from being contaminated due to external foreign substances during the coupling process. 
     In addition, one aspect of the present disclosure provides a container for mixing heterogeneous contents, wherein a first discharge passage connected to a first discharge device of the first container and a second discharge passage connected to a second discharge device of the second container are formed inside the push button, and a soft sealing member is formed at the end of the second discharge passage, so that the sealing member and the second discharge device can be assembled with each other as the second container is coupled to the first container, thereby stably maintaining the second container in a sealed state. 
     One aspect of the present disclosure provides a container for mixing heterogeneous contents, the container including: a first container formed therein with a content storage space and a container coupling space that are separately defined; a second container coupled to the container coupling space of the first container; a first discharge device installed in the first container to discharge contents stored in the first container; a second discharge device installed in the second container to discharge contents stored in the second container; and a push button configured to simultaneously actuate the first and second discharge devices and formed with first and second discharge passages connected to the first and second discharge devices, respectively, and first and second discharge ports, wherein the second container is inserted into an opened lower portion of the container coupling space so that the second container is coupled with the first container, and the second discharge device installed in the second container is connected to the second discharge passage. 
     In addition, the container may further include a cap member provided at an inner side thereof with a support plate and coupled to the first container, wherein the support plate may be formed with a discharge device installation hole to install the first discharge device and a discharge device through hole in which the second discharge device passes through the discharge device through hole. 
     In addition, the second container may be biased to one side from a center of the first container. 
     Further, the first and second discharge devices may include pumps for discharging the contents to an outside by pumping. 
     In addition, a soft sealing member may be formed at an end of the second discharge passage of the push button, and the second discharge device installed in the second container may be fitted with the soft sealing member when the first container is coupled with the second container. 
     Further, the soft sealing member may include a coupling portion coupled to the second discharge passage and a sealing insert portion inserted into a second stem of the second discharge device. 
     According to one aspect of the present disclosure, first and second containers for storing mutually different contents are connected to first and second discharge devices, respectively, to allow the heterogeneous contents to be discharged to the outside at once by a press action of a push button, in which a second container is coupled to a lower portion of a container coupling space of a first container, and a discharge device formed in the second container and a discharge passage formed in a push button are connected to each other as the first container is coupled to the second container, so that the first and second containers can be easily coupled to each other, and contents can be prevented from being contaminated due to external foreign substances during the coupling process. 
     In addition, according to one aspect of the present disclosure, a first discharge passage connected to a first discharge device of the first container and a second discharge passage connected to a second discharge device of the second container are formed inside the push button, and a soft sealing member is formed at the end of the second discharge passage, so that the sealing member and the second discharge device can be assembled with each other as the second container is coupled to the first container, thereby stably maintaining the second container in a sealed state. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a mixing container according to one aspect of the present disclosure. 
         FIG. 2  is an exploded perspective view of the mixing container according to one aspect of the present disclosure. 
         FIG. 3  is a sectional view of the mixing container according to one aspect of the present disclosure. 
         FIG. 4  is a sectional view illustrating a state before a second container is couple to a first container according to one aspect of the present disclosure. 
         FIG. 5  a sectional view illustrating a state in which the first container is coupled to the second container according to one aspect of the present disclosure. 
         FIG. 6  is a sectional view showing a state in which heterogeneous contents are simultaneously discharged when a push button of the mixing container according to one aspect of the present disclosure is pushed. 
         FIG. 7  is a sectional view showing a state in which the contents are introduced into first and second discharge devices while the push button of the mixing container according to one aspect of the present disclosure is restored to an original position. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Hereinafter, the detailed descriptions of one aspect of the present disclosure are embodiments for carrying out one aspect of the present disclosure, and the corresponding embodiment refers to the accompanying drawings as an example. The embodiments will be described in detail to enable those skilled in the art to carry out one aspect of the present disclosure. It is apparent to be understood that the various embodiments of one aspect of the present disclosure may be different from each other but do not need to be mutually exclusive. For example, the particular shape, structure, and feature described herein may be embodied in other embodiments without departing from the idea and scope of one aspect of the present disclosure in connection with the embodiment. In addition, it shall be understood that the location or arrangement of an individual element within each disclosed embodiment may be modified without departing from the idea and scope of one aspect of the present disclosure. 
     Accordingly, the following detailed description does not disclose a limited meaning, and the scope of the present disclosure is limited only by the appended claims, along with the full scope of equivalents to which the claims are entitled, if properly explained. Similar reference numerals in the drawings refer to the same or similar function throughout several aspects. 
     Although general terms which are widely used recently have been selected in one aspect of the present disclosure while taking into consideration the function according to one aspect of the present disclosure as possible, the terms may vary depending on the intention of those skilled in the art, judicial cases, the advent of new technology, or the like. In addition, in certain cases, the terms may be arbitrarily selected by the applicant. In this case, the meaning thereof will be described in detail in the relevant description of the present disclosure. Accordingly, the terms used in one aspect of the present disclosure should be defined based on the meaning of the term and contents throughout one aspect of the present disclosure, not simply on names of the terms. 
     When one part “includes” one element in one aspect of the present disclosure, the above expression does not exclude other elements, but may further include the other elements, unless particularly stated otherwise. 
     The container for mixing heterogeneous contents according to one aspect of the present disclosure will be described with reference to  FIGS. 1 to 7 . 
       FIG. 1  is a perspective view of the mixing container according to one aspect of the present disclosure.  FIG. 2  is an exploded perspective view of the mixing container according to one aspect of the present disclosure.  FIG. 3  is a sectional view of the mixing container according to one aspect of the present disclosure. 
     As shown in the drawing, the mixing container according to one aspect of the present disclosure may include a first container  10 , a second container  20 , a first discharge device  30 , a second discharge device  40 , and a push button  50 . 
     The first container  10  may accommodate liquid-type or gel-type first contents C 1  therein and may be formed at one side thereof with an opened inlet portion  12 . 
     As shown in  FIG. 1 , the first container  10  may be formed of a rigid material to maintain a basic shape. Although the first container  10  is illustrated in a rigid cylindrical shape in the drawings of the mixing container according to an aspect of the present disclosure, the first container  10  may not be limited thereto, and may be formed in various shapes and formed of various materials. 
     As shown in  FIGS. 2 and 3 , the first container  10  may be formed therein with a content storage space  14  and a container coupling space  16 . 
     The content storage space  14  and the container coupling space  16  may be divided while being separated from each other by a partition wall  18 , in which at least a portion of the partition wall  18  may have a partially cylindrical shape connected to the inner periphery of the first container  10 . 
     In addition, first contents C 1  may be stored in the content storage space  14 , and the second container  20  may be detachably coupled to the container coupling space  16 . The container coupling space  16  may have opened upper and lower portions, in which the second discharge device  40  may pass through the opened upper portion, and the second container  20  provided with the second discharge device  40  may be inserted into the opened lower portion. 
     Meanwhile, a cap member  60  may be further coupled to the first container  10 . An inlet portion  12  of the first container  10  may be fixedly coupled to one side of the cap member  60 , and the push button  50  may be coupled to the other side of the cap member  60  such that the push button  50  can move vertically. 
     A support plate  62  may be formed inside the cap member  60 . A discharge device installation hole  62   a  may be formed in the support plate  62  so that the first discharge device may be installed, and a discharge device through hole  62   b  may be formed in the support plate  62  so that the second discharge device  40  installed in the second container  20  may pass through the discharge device through hole  62   b  when the second container  20  is coupled to the lower portion of the first container  10 . 
     In addition, an upper extension protrusion ring  62   c  may extend upward along the outer circumference of the discharge device installation hole  62   a  on an upper surface of the support plate  62 . The first discharge device  30  may be inserted into the upper extension protrusion ring  62   c  to prevent the first discharge device  30  from being moved. The upper extension protrusion ring  62   c  may be formed separately from the support plate  62  and may be coupled to the support plate  62 . 
     In addition, a sealing plate  64  formed of an elastic material may be provided under the support plate  62  of the cap member  60  to seal between the first container  10  and the cap member  60 . The sealing plate  64  may be formed with a first through hole  64   a  corresponding to the discharge device installation hole  62   a  of the support plate  62 , and a second through hole  64   b  corresponding to the discharge device through hole  62   b  of the support plate  62 . 
     Further, an ‘L’-shaped fixing ring  66  may be provided at an upper portion of the support plate  62  adjacent to the discharge device installation hole  62   a  in order to fix the first discharge device  30  to the support plate  62 , and a discharge port exposure hole  68  may be formed at one side of the upper portion of the cap member  60  in order to expose first and second discharge ports  54   a  and  54   b  of the push button  50  to the outside. 
     The second container  20  may be coupled to the container coupling space  16  of the first container  10 . Accordingly, the second container  20  may be formed in a cylindrical shape corresponding to the container coupling space  16  of the first container  10 . 
     As shown in  FIGS. 2 and 3 , the second container  20  may be located while being biased in one side from the center of the first container  10 , and preferably, the second container  20  may be located below a horizontal extension line of the first and second discharge passages of the push button  50  to be described below. 
     Second contents C 2  may be stored in the second container  20 . The second contents C 2  are different from the first contents C 1 , and may increase the efficacy or effect when used in combination with the first contents C 1 . 
     The second discharge device  40  for discharging the contents stored in the second container  20  to the outside may be installed at one side of the second container  20 , and the second discharge device  40  may be inserted into a lower portion of the container coupling space  16  of the first container  10  ( 16 ) and fixedly coupled to the inside of the first container  10 . In addition, an air circulation hole  22  may be formed in a bottom surface of the second container  20  to allow external air to be introduced into the second container  20  whenever the second discharge device  40  is operated. 
     That is, since a conventional mixing container has a structure in which an entire inner container is inserted into an inlet portion of an opened outer container and accommodated therein together with the cosmetic contents stored in the outer container, external foreign substances sticking on the outer periphery of the inner container may enter the outer container and contaminate the cosmetic contents stored in the outer container in the process of assembling or disassembling the inner container and the outer container. In addition, due to the volume of the inner container or sudden insertion, the contents stored in the outer container may overflow to the outside and contaminate the surroundings. 
     In order to solve the above problem, as shown in  FIG. 3 , the mixing container according to an aspect of the present disclosure divides the inner space of the first container  10  to separately form the content storage space  14  where the contents are stored and the container coupling space  16  where the second container  20  is mounted. In use, the second container  20  is inserted into the opened lower portion of the container coupling space  16  such that the second container  20  can be coupled with the first container  10 , and at the same time, the second discharge device  40  installed in the second container  20  is connected to the second discharge passage  52   b , so that the second container  20  coupled to the first container  10  does not affect the first contents C 1 . Therefore, the first container  10  can be more conveniently coupled with the second container  20 , and the first contents C 1  can be prevented from being contaminated by external foreign substances in the process of coupling the second container  20 . 
     Although the first container  10  is shown as being undercut-coupled to the second container  20  in the drawing of the mixing container according to one aspect of the present disclosure, the present disclosure is not limited thereto, and various coupling schemes, such as protrusion-and-groove coupling, press fitting coupling, or screw coupling may be applicable. 
     The first discharge device  30  may be installed on the support plate  62  of the cap member  60  in a state in which at least a part of the first discharge device  30  is inserted into the first container  10 , and discharge the first contents C 1  stored in the first container  10  to the outside. The first discharge device  30  may be a pump configured to discharge a fixed amount of the contents to the outside by a pumping action. 
     As shown in  FIG. 3 , the first discharge device  30  may include a first housing  31  formed at one side thereof with a first contents suction hole  31   a , a first suction valve  32  configured to open and close the first contents suction hole  31   a  of the first housing  31 , a first suction tube  33  coupled to a lower portion of the first housing  31  to suck the first contents C 1  into the first housing  31 , a first housing cap  34  fixedly coupled to an upper portion of the first housing  31 , a first piston support  35  formed inside the first housing  31  to vertically move inside the first housing  31 , a first piston  36  fitted to an outer side of the first piston support  35  to come into close contact with an inner surface of the first housing  31 , a first stem  37  coupled to an upper portion of the first piston support  35 , and a first spring  38  configured to elastically support the first stem  37 . 
     In addition, a sealing ring  39  may be further provided between a first housing  31  of the first discharge device  30  and the support plate  62  of the cap member  60  in order to improve the sealing force inside the first container  10 . 
     The second discharge device  40  may be fixedly installed in the second container  20  in a state in which at least a part of the second discharge device  40  is inserted into the second container  20  and the second discharge device  40  may be inserted into the first container  10  together with the second container  20 . The second discharge device  40  may discharge the second contents C 2  stored in the second container  20  to the outside. The second discharge device  40  may be a pump that discharges a fixed amount of contents to the outside by a pumping action. 
     As shown in  FIG. 3 , the second discharge device  40  may include a second housing  41  formed at one side thereof with a second contents suction hole  41   a , a second suction valve  42  configured to open and close the second contents suction hole  41   a  of the second housing  41 , a second housing cap  44  coupled to an upper portion of the second housing  41  to fix the second housing to one side of the second container  20 , a second piston support  45  formed inside the second housing  41  to vertically move inside the second housing  41 , a second piston  46  fitted to an outer side of the second piston support  55  to come into close contact with an inner surface of the second housing  41 , a second stem  47  coupled to an upper portion of the second piston support  45 , a second spring  48  configured to elastically support the second stem  47 , and a second push plate  49  configured to push up the second contents C 2  toward the second housing  41  corresponding to an amount of the second contents C 2  discharged from the inside of the second container  20 . 
     Meanwhile, the first discharge device  30  and the second discharge device  40  may have a size and a structure different from each other according to the using ratio between the first and second contents C 1  and C 2  to be pumped. For example, when the first contents C 1  discharged by the first discharge device  30  are configured to be discharged, mixed and used more than the second contents C 1  discharged by the second discharge device  40 , a piston stroke distance and a cylinder inner diameter of the first discharge device  30  may be greater than those of the second discharge device  40 . 
     The push button  50  may be coupled to the cap member  60  so as to move up and down to simultaneously actuate the first and second discharge device  30  and  40 , when pressed by a press action of the user. 
     First and second discharge passages  52   a  and  52   b  connected to the first and second discharge device  30  and  40  may be formed inside the push button  50 , respectively, and first and second discharge ports  54   a  and  54   b  may be formed at one end portions of the push button  50  exposed to the outside of the first and second discharge passages  52   a  and  52   b , respectively. 
     The first discharge passage  52   a  of the push button  50  may be coupled to the first stem  37  of the first discharge device  30  to allow the first contents C 1  pumped by the first discharge device  30  to move to the first discharge port  54   a , and the second discharge passage  52   b  may be coupled to the second stem  47  of the second discharge device  30  to allow the second contents C 2  pumped by the second discharge device  40  to move to the second discharge port  52   b.    
     In addition, a soft sealing member  70  may be formed at an end of the second discharge passage  52   b , that is, at a position opposite to the second discharge port  54   b . The sealing member  70  may be fitted with the second discharge device  40  installed in the second container  20  when the first container  10  is coupled with the second container  20 , thereby stably sealing the inside of the second container  20  and the second discharge device  40 . 
     In other words, the sealing member  70  may have a tubular shape with opened upper and lower portions, and may include a coupling portion  72  coupled to the second discharge passage  52   b  and a sealing insertion portion  74  inserted into an upper portion of the second discharge device  40 . The coupling portion  72  may be inserted into the end of the second discharge passage  52   b  and fixedly coupled thereto, and the sealing insertion portion  74  may be tightly fitted into an upper inner periphery of the second stem  47  of the second discharge device  40 . 
     The sealing member  70  may be formed of a soft material to improve the sealing force inside the second container and to be smoothly inserted into the inside of the second step  47  of the second discharge device  40 . The sealing member  70  may be formed of at least one of materials including urethane rubber, natural rubber, elastomer, NBR (nitrile-butadiene rubber) and silicone (silicone), or at least one of elastic materials including polypropylene, polyethylene, acrylonitrile butadiene styrene (ABS), and thermos-plastic elastomer (TPE). The material for the sealing member  70  may not be limited to the above-described materials, and may be formed of various materials so far as they have a predetermined elasticity. 
     In addition, the first and second discharge ports  54   a  and  54   b  may be formed above and below each other. That is, the second discharge port  54   b  may be positioned very below the first discharge port  54   a , so that the first contents C 1  discharged from the first discharge port  54   a  and the second contents C 2  discharged from the second discharge port  54   b  may be mixed and used. 
       FIGS. 4 to 7  are views illustrating the assembly and use of the container for mixing heterogeneous contents according to one aspect of the present disclosure. The assembly and use of the heterogeneous content mixing container according to one aspect of the present disclosure will be described with reference to the above drawings. 
       FIG. 4  is a sectional view illustrating a state before a second container is couple to a first container according to one aspect of the present disclosure,  FIG. 5  is a sectional view illustrating a state in which the first container is coupled to the second container according to one aspect of the present disclosure,  FIG. 6  is a sectional view illustrating a state in which heterogeneous contents are simultaneously discharged as the push button of the mixing container according to one aspect of the present disclosure is pressed, and  FIG. 7  is a sectional view showing a state in which the contents are introduced into the first and second discharge devices while the push button of the mixing container according to one aspect of the present disclosure is restored to an original position. 
     First, in order to assemble the mixing container according to one aspect of the present disclosure, as shown in the drawings, liquid-type or gel-type first contents C 1  are filled in the content storage space  14  of the first container  10 . 
     Then, the first discharge device  30 , which includes the first housing  31 , the first suction valve  32 , the first suction tube  33 , and the first housing cap  34 , the first piston support  35 , the first piston  36 , the first stem  37 , and the first spring  38 , is installed in the discharge device installation hole  62   a  of the cap member  60 , and the first discharge device  30  is fixed by coupling a fixing ring  66  to the upper extension protrusion ring  62   c  of the support plate  62 . 
     Next, the cap member  60  is coupled to the inlet portion  12  of the first container  10 , and the push button  50  is coupled to the opened upper portion of the cap member  60  so as to move up and down. In this case, the end of the first discharge passage  52   a  of the push button  50  is coupled to the first stem  37  of the first discharge device  30 , and the soft sealing member  70  is coupled to the end of the second discharge passage  52   b.    
     After that, the push plate  49  is placed on an inner bottom of the second container and the liquid-type or gel-type first contents C 1  are filled. Then, the second discharge device including the housing  41 , the second suction valve  42 , the second housing cap  44 , the second piston support  45 , the second piston  46 , the second stem  47  and the second spring  48  is installed. 
     Next, as shown in  FIG. 4 , the first container  10  and the second container  20  assembled in the above-described manner are separately packaged. In this case, the end portion of the second discharge device  40  installed in the second container  20  is sealed, so that foreign substances may be prevented from permeating into the second discharge device  40  during distribution or storage. 
     Meanwhile, when the mixing container assembled in the above-described manner is used, as shown in  FIG. 5 , the second container  20  is inserted into the lower portion of the container coupling space  16  of the first container  10  so that the second container  20  is coupled with the first container  10 . In this case, the second discharge device  40  installed in the second container  20  passes through the discharge device through hole  62   b  of the cap member  60  by way of the container coupling space  16  of the first container  10  and the first container  10  is fixedly coupled with the second container  20 . Thus, the sealing member  70  is tightly fitted into the second step  47  of the second discharge device  40 . Accordingly, the first contents C 1  stored in the first container  10  and the second contents C 2  stored in the second container  20  can be discharged together through the first and second discharge device  30  and  40 . 
     Then, as shown in  FIG. 6 , the first contents C 1  stored in the first container  10  and the second contents C 2  stored in the second container  20  are discharged together by simultaneously pressing the first discharge device  30  and the second discharge device  40  using the push button  50 , and thus the heterogeneous contents discharged in the above manner are mixed and used. 
     More specifically, when the first and second discharge device  30  and  40  are pressed together, the first and second stems  37  and  47  and the first and second piston supports  35  and  45  coupled to lower portions of the first and second stems  37  and  47  move downward. Since the first and second pistons  36  and  46  of the first and second discharge device  30  and  40  come into close contact with inner surfaces of the first and second housings  31  and  41 , only the first and second piston supports  35  and  45  move downward, thereby generating gaps between the first and second piston supports  35  and  45  and the first and second pistons  36  and  46 , and thus discharge passages of the first and second contents C 1  and C 2  are generated. 
     Then, the lower ends of the first and second stems  37  and  47 , which are moving downward, press the first and second pistons  36  and  46 , so that the first and second pistons  36  and  46  move downward together with the first and second piston supports  35  and  45 , thereby reducing volumes inside the first and second housings  31  and  41 . Accordingly, the first and second suction valves  32  and  42  block the first and second contents suction ports  31   a  and  41   a  due to discharge pressures in the first and second housings  31  and  41 , and the first and second contents C 1  and C 2  accommodated in the first and second housings  31  and  41  come out between the first and second piston supports  35  and  45  and the first and second pistons  36  and  46 , pass through the inside of the first and second piston supports  35  and  45  and the first and second discharge passages  52   a  and  52   b , and are discharged to the first and second discharge ports  54   a  and  54   b , respectively. 
     Then, as shown in  FIG. 7 , when the pressure applied to the push button  50  is released, the first and second stems  37  and  47  and the first and second piston supports  35  and  45  coupled to the lower portions of the first and second stems  37  and  47  move upward due to the elasticities of the first and second springs  38  and  48  for elastically supporting the first and second stems  37  and  47 . In this case, the lower portions of the first and second piston supports  35  and  45  pull up the first and second pistons  36  and  46 , thereby closing the gaps between the first and second piston supports  35  and  45  and the first and second pistons  36  and  46 , so that the first and second piston supports  35  and  45  upwardly move together with the first and second pistons  36  and  46 . 
     Accordingly, vacuum pressures are generated due to increases of volumes inside the first and second housings  31  and  41 , and the first and second suction valves  32  and  42  are lifted up by the vacuum pressure, thereby opening the first and second contents suction ports  31   a  and  41   a , so that the first and second contents C 1  and C 2  stored in the first and second containers  10  and  20  are introduced into the first and second housings  31  and  41 , respectively. Simultaneously, the push plate  49  provided inside the second container  20  moves upward corresponding to the amount of discharged second contents C 2 . 
     Then, the heterogeneous contents discharged in the above manner are mixed and used. 
     Although the present disclosure has been described with the particulars such as specific elements, the limited embodiments, and the drawings, it is obvious that the particulars are provided only to help comprehensive understanding of the present disclosure, the present disclosure is not limited to the embodiments, and various changes and modifications may be carried out by those skilled in the art. 
     Therefore, the spirit of the present disclosure should not be limited to the aforementioned embodiments, and the following claims as well as all modifications or variations belonging to the equivalents of the claims will be within the scope of the present disclosure.