Shoe having integrally formed upper

Abstract

A shoe is suitable to be made in cooperation with a last having a wear forming portion with a forming volume, and includes an upper unit having a bottom surface and a peripheral surface cooperatively defining a foot space that has a top open end for entry of the wear forming portion and that has a volume smaller than the forming volume of the wear forming portion by 5-10%. The upper unit has a toe stitching portion and a heel stitching portion located on the bottom surface of the upper unit. A sole is fixedly disposed on the bottom surface of the upper unit.

What is claimed is: 
     
         1 . A shoe suitable to be made in cooperation with a last, the last having a wear forming portion which has a forming volume, said shoe comprising:
 an upper unit including a bottom surface, and a peripheral surface connected to a periphery of said bottom surface and cooperating with said bottom surface to define a foot space, said foot space having a top open end for entry of the wear forming portion of the last into said foot space, said foot space having a volume smaller than the forming volume of the wear forming portion of the last by 5-10%, said upper unit being made from a cut piece, said cut piece having a main body, and two wing portions symmetrically disposed on two opposite sides of said main body and integrally connected as one piece with said main body, said main body having a main body front convex edge, two symmetrical main body rear end mating edges, a main body rear concave edge between said main body rear end mating edges and opposite to said main body front convex edge, and two symmetrical main body rear lateral mating edges respectively connected to said main body rear end mating edges, each of said wing portions having a wing lateral mating edge spaced apart from said main body and having a front end and a rear end, a wing front curved edge connected between said front end of said wing lateral mating edge and a corresponding one of two opposite ends of said main body front convex edge, and a wing rear curved edge connected between said rear end of said wing lateral mating edge and a corresponding one of said main body rear lateral mating edges, said main body rear end mating edges being abuttingly connected to each other by sewing, said wing lateral mating edges of said wing portions being abuttingly connected to each other by sewing, said wing front curved edges of said wing portions being abuttingly connected to said main body front convex edge by sewing, said wing rear curved edges of said wing portions being respectively and abuttingly connected to said main body rear lateral mating edges by sewing, said upper unit having a toe stitching portion extending along a junction of said main body front convex edge and said wing front curved edges, and a heel stitching portion extending along a junction of said main body rear lateral mating edges and said wing rear curved edges, said toe stitching portion and said heel stitching portion being located on said bottom surface of said upper unit; and   a sole fixedly disposed on said bottom surface of said upper unit.   
     
     
         2 . The shoe as claimed in  claim 1 , wherein said upper unit further has a bottom stitching portion extending along a junction of said wing lateral mating edges and located on said bottom surface of said upper unit, and a rear end stitching portion extending along a junction of said main body rear end mating edges and located on a rear end of said peripheral surface of said upper unit. 
     
     
         3 . The shoe as claimed in  claim 1 , wherein said cut piece includes an outer knitted fabric layer, a fabric lining layer, and an intermediate structure connected between said outer knitted fabric layer and said fabric lining layer. 
     
     
         4 . The shoe as claimed in  claim 3 , wherein said intermediate structure is made of a foam material. 
     
     
         5 . The shoe as claimed in  claim 3 , wherein said intermediate structure includes an outer fabric layer fixedly connected to said outer knitted fabric layer, an inner fabric layer fixedly connected to said fabric lining layer, and a foam layer fixedly connected between said outer fabric layer and said inner fabric layer. 
     
     
         6 . The shoe as claimed in  claim 1 , further comprising a tightening unit which includes two decorative tightening plates symmetrically disposed on and abutting against left and right sides of said upper unit and connected to said sole, and at least one tightening strap interconnecting said decorative tightening plates, each of said decorative tightening plates having a bottom end portion connected to said sole, and a top end portion connected to said at least one tightening strap. 
     
     
         7 . The shoe as claimed in  claim 6 , wherein said top end portion is formed with a plurality of spaced-apart through holes, and said at least one tightening strap is a shoelace that is removably threaded through said through holes in said tightening plates. 
     
     
         8 . The shoe as claimed in  claim 1 , further comprising an adhesive layer fixedly connected between said bottom surface of said upper unit and a top surface of said sole.