Fluid-storing container and fluid discharge device

Abstract

A fluid-storing container includes a fluid-storing container main body ( 10 ), a pouch member ( 20 ) composed of a flexible material and disposed inside the fluid-storing container main body ( 10 ), a flow member ( 30 ) detachable from an opening portion ( 11 ) in the fluid-storing container main body, a valve member ( 40 ) and a lid member ( 50 ) which shut off fluid flowing between the inside and the outside of the fluid-storing container main body, and a joined member ( 60 ) which fixes the fluid-storing container main body ( 10 ) and the flow member ( 30 ).

1 . A fluid discharge device configured to be attached to a container, comprising: 
 a pouch member having an opening portion and being composed of a flexible, collapsible material and configured to be disposed inside the container; and    a communication member configured to be attached to a neck portion of the container when in use, said communication member comprising: (i) a joined portion which is joined with the opening portion of the pouch member, (ii) a fluid outflow passage through which the inside and the outside of the container are communicated when in use, and (iii) a gas inflow passage through which the inside of the pouch member and the outside of the container are communicated when in use.    
   
   
       2 . The fluid discharge device according to  claim 1 , wherein the communication member is an integrally formed single piece.  
   
   
       3 . The fluid discharge device according to  claim 1 , wherein the fluid outflow passage and the gas inflow passage are formed in parallel to each other.  
   
   
       4 . The fluid discharge device according to  claim 3 , wherein the fluid outflow passage and the gas inflow passage are formed in an axial direction of the communication member.  
   
   
       5 . The fluid discharge device according to  claim 1 , wherein the communication member has a column shape fitted inside the neck portion.  
   
   
       6 . The fluid discharge device according to  claim 5 , further comprising a coupling member which encloses the communication member to couple the communication member to the neck portion wherein the neck portion is interposed between the communication member and the coupling member.  
   
   
       7 . The fluid discharge device according to  claim 1 , further comprising a lid member detachably attached to an end portion of the communication member for closing the fluid outflow passage and the gas inflow passage.  
   
   
       8 . The fluid discharge device according to  claim 1 , wherein the joined portion of the communication member has an annular protrusion around which the opening portion of the pouch member is attached.  
   
   
       9 . The fluid discharge device according to  claim 1 , wherein the fluid outflow passage is provided with an outflow prevention member for shutting off fluid flowing between the inside and the outside of the container when in use.  
   
   
       10 . The fluid discharge device according to  claim 9 , wherein the outflow prevention member is a valve member provided in the fluid outflow passage.  
   
   
       11 . The fluid discharge device according to  claim 10 , wherein the valve member comprises a rotatable shaft crossing the fluid outflow passage in a direction perpendicular to an axis of the fluid outflow passage, said rotatable shaft being provided with a valve portion disposed in the fluid outflow passage, said valve portion being configured to close and open the fluid outflow passage depending on a rotated angle of the rotatable shaft.  
   
   
       12 . The fluid discharge device according to  claim 10 , wherein the fluid outflow passage has an inwardly extended portion having a circular opening which serves as a valve seat, and the valve member comprises a valve body for closing the circular opening of the valve seat, said valve body being urged to close the circular opening and open the circular opening when pressure inside the container increases.  
   
   
       13 . The fluid discharge device according to  claim 12 , wherein the valve member further comprises an annular support portion fixed in the fluid outflow passage and plural coupling portions which couple the support portion and the valve body.  
   
   
       14 . The fluid discharge device according to  claim 13 , wherein each coupling portion has at least one flexion to urge the valve body toward the circular opening of the valve seat.  
   
   
       15 . The fluid discharge device according to  claim 1 , wherein the communication member has a tubular extension which extends the fluid outflow passage toward the inside of the container.  
   
   
       16 . The fluid discharge device according to  claim 15 , wherein the tubular extension has an open end and at least one hole on a wall of the tubular extension, through which the fluid flows into the fluid outflow passage.  
   
   
       17 . The fluid discharge device according to  claim 1 , which is configured to substantially or nearly balance a volume of the fluid discharged from the fluid outflow passage and a volume of gas coming into the pouch member through the gas inflow passage when in use.  
   
   
       18 . A fluid container comprising: 
 a container main body for storing a fluid inside, which has a neck portion; and    the fluid discharge device of  claim 1  attached to the neck portion.    
   
   
       19 . The fluid container according to  claim 18 , wherein the fluid discharge device is detachably attached to the neck portion.  
   
   
       20 . The fluid container according to  claim 18 , wherein the container main body is composed of a material having shape-restorable flexibility.  
   
   
       21 . The fluid container according to  claim 18 , wherein the communication member has a length in an axial direction which is longer than that of the neck portion.  
   
   
       22 . The fluid container according to  claim 18 , wherein the pouch member has a capacity which is equal to or greater than that of the container main body.