Hanging file folder

Abstract

The combined hanging file folder structure includes a primary file cassette and at least one secondary file cassette. Each cassette contains a storage space, and an extension portion at a top of the storage space. A positioning portion is placed at the end of extension portion of the secondary file cassette. This positioning portion mates with a positioning portion at a back of the primary file cassette, forming an integrated structure of primary and secondary file cassettes. Furthermore, a positioning portion is placed at a lower part of the back of the secondary file cassette, allowing to mate with the positioning portion of another extension portion and leading to an expanded combination of secondary file cassettes.

1 . A combined hanging file folder structure, comprising:
 a primary file cassette, having an internal storage space, an extension portion being placed at a top of said internal storage space and being provided with a hanging portion, and a positioning portion placed at a lower part of a back of said primary file cassette; and   at least one secondary file cassette, having an internal storage space, an extension portion being placed at a top of said internal storage space, and a attachment portion being placed at an end of said extension portion of said secondary file cassette, said attachment portion securely mating with said positioning portion of said primary file cassette, said secondary file cassette further comprising a second positioning portion being placed at a lower part of a back of said secondary file cassette, said second positioning portion being mated with an attachment portion on said extension portion.   
   
   
       2 . The structure defined in  claim 1 , wherein each internal storage space of the primary and secondary file cassettes are formed by a single volume or a plurality of space structures. 
   
   
       3 . The structure defined in  claim 1 , wherein said positioning portion comprises a snapping member and a linking tape. 
   
   
       4 . The structure defined in  claim 1 , wherein said extension portion fully covers a top of each internal storage space of the primary and secondary file cassettes.