Pump structure easily and quickly connectable with an air cushion or a bladder

Abstract

A pump structure easily and quickly connectable with an air cushion or a bladder. The pump structure includes a flexible main body defining a cavity. The main body is compressible and decompressible to reciprocally contract and expand the cavity for pumping a fluid. A one-way valve is mounted on a wall of the cavity, permitting external fluid to one-way flow into the cavity. A check valve and an output tube are connected with the main body. A conduit with a deflation valve is disposed on the flexible main body and communicates with the output tube to form a deflation passage. The output tube is selectively easily connectable with an air cushion or a bladder, whereby the fluid can be pumped from the cavity through the output tube into the air cushion or the bladder.

1 . A pump structure easily and quickly connectable with an air cushion or a bladder, said pump structure comprising: 
 a flexible main body defining a cavity, the main body being compressible and decompressible to reciprocally contract and expand the cavity for pumping a fluid;    a one-way valve mounted on a wall of the cavity, the one-way valve being responsive of the contraction or expansion of the cavity to only permit external fluid to one-way flow into the cavity;    a check valve disposed at one end of the flexible main body, the check valve having an opening communicating with the cavity, the check valve defining a fluid passage, the other end of the check valve distal from the cavity having a valve movable between an opened position and a closed position, whereby the fluid sent from the cavity into the fluid passage can go through the valve to be output;    an output tube facing the valve of the check valve, whereby the fluid passing through the valve flows through the output tube to be output from an outward extending end of the output tube; and    a conduit having a deflation valve, the conduit being disposed on the flexible main body, one end of the conduit extending to a position where the output tube faces the valve of the check valve to form a deflation passage.    
   
   
       2 . The pump structure as claimed in  claim 1 , wherein the one-way valve is disposed on a bottom of the cavity.  
   
   
       3 . The pump structure as claimed in  claim 1 , wherein the check valve is composed of two plastic membranes the edges of which are fused.  
   
   
       4 . The pump structure as claimed in  claim 1 , wherein the outward extending end of the output tube is connectable with an air cushion or a bladder.  
   
   
       5 . The pump structure as claimed in  claim 4 , wherein the air cushion or the bladder has a manifold or a nozzle for connecting with the output tube.  
   
   
       6 . The pump structure as claimed in  claim 1 , wherein the outward extending end of the output tube has a detachable connector.  
   
   
       7 . The pump structure as claimed in  claim 2 , wherein the outward extending end of the output tube has a detachable connector.  
   
   
       8 . The pump structure as claimed in  claim 3 , wherein the outward extending end of the output tube has a detachable connector.  
   
   
       9 . The pump structure as claimed in  claim 4 , wherein the outward extending end of the output tube has a detachable connector.  
   
   
       10 . The pump structure as claimed in  claim 5 , wherein the outward extending end of the output tube has a detachable connector.  
   
   
       11 . The pump structure as claimed in  claim 1 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       12 . The pump structure as claimed in  claim 2 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       13 . The pump structure as claimed in  claim 3 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       14 . The pump structure as claimed in  claim 4 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       15 . The pump structure as claimed in  claim 5 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       16 . The pump structure as claimed in  claim 6 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       17 . The pump structure as claimed in  claim 7 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       18 . The pump structure as claimed in  claim 8 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       19 . The pump structure as claimed in  claim 9 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.  
   
   
       20 . The pump structure as claimed in  claim 10 , wherein the check valve is composed of two plastic membranes the edges of which are fused to define a fluid passage and a valve, the valve of the check valve being kept closed, whereby when the cavity of the main body is compressed to output the fluid, the valve of the check valve is forcedly opened, permitting the fluid to flow into the output tube.