Punchbag

Abstract

A punchbag is composed of an inner bag and an outer bag. The two bags can be separated from each other and folded respectively to make easy transportation and storage. This punchbag has an excellent rebound due to dividing the inner bag into a water chamber and an air chamber.

What is claimed is:  
     
         1 . A punchbag comprising: 
 an outer bag having an open end defined therein, a lid detachably connected with an outer periphery of the outer bag to cover the open end;    an inner bag receivable in the outer bag and having a water chamber for sealingly containing therein water and an air chamber defined inside the water chamber for sealingly containing therein air; and    a retaining device securely formed on the outer bag to secure the outer bag.    
     
     
         2 . The punchbag as claimed in  claim 1 , wherein the inner bag is concentrically received inside the outer bag in relation to the outer bag.  
     
     
         3 . The punchbag as claimed in  claim 1 , wherein a water outlet is defined in the water chamber and a plug is securable in the water outlet to block the water outlet, and wherein an air outlet is defined in the air chamber and an air plug is securable in the air outlet to block the air outlet.  
     
     
         4 . The punchbag as claimed in  claim 2 , wherein a water outlet is defined in the water chamber and a plug is securable in the water outlet to block the water outlet, and wherein an air outlet is defined in the air chamber and an air plug is securable in the air outlet to block the air outlet.  
     
     
         5 . The punchbag as claimed in  claim 1 , wherein the water chamber has an inclined top face.  
     
     
         6 . The punchbag as claimed in  claim 2 , wherein the water chamber has an inclined top face.  
     
     
         7 . The punchbag as claimed in  claim 3 , wherein the water chamber has an inclined top face.  
     
     
         8 . The punchbag as claimed in  claim 4 , wherein the water chamber has an inclined top face.  
     
     
         9 . The punchbag as claimed in  claim 5 , wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.  
     
     
         10 . The punchbag as claimed in  claim 6 , wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.  
     
     
         11 . The punchbag as claimed in  claim 7 , wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.  
     
     
         12 . The punchbag as claimed in  claim 8 , wherein the water outlet has a valve plate connected to an inner wall of the water outlet on the inclined top face of the water chamber to prevent water leakage from the water outlet.  
     
     
         13 . The punchbag as claimed in  claim 1 , wherein the retaining device has at least one chain securely connected to the outer periphery of the outer bag and a hook securely connected with a free end of the at least one chain thereby allowing the punchbag to be hung on a location.  
     
     
         14 , The punchbag as claimed in  claim 13 , wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.  
     
     
         15 . The punchbag as claimed in  claim 1  further having a zipper provided between the outer periphery of the open end and the lid so that the lid is able to detachably connect with the outer periphery of the outer bag. open end  
     
     
         16 . The punchbag as claimed in  claim 2 , wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.  
     
     
         17 , The punchbag as claimed in  claim 3 , wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.  
     
     
         18 , The punchbag as claimed in  claim 5 , wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.  
     
     
         19 , The punchbag as claimed in  claim 9 , wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.  
     
     
         20 , The punchbag as claimed in  claim 15 , wherein the retaining device further has at least two belts connecting with the outer bag at first ends of the belt, each belt has a half-moon ring at a second end of the belts to connect with the at least one chain.