Structure of bottom of shoes

Abstract

A structure of the bottom of shoes is provided. The bottom of shoes includes a bent portion whose top portion is shaped concavely between the rear heel and the rear heel; and an elastic restoring portion equipped in the bent portion, so that the bottom of shoes may adhere to the heel constantly. The rear heel of the bottom of shoes is lifted up toward the heel constantly, thereby coming off of the bottom of the shoes can be effectively prevented. Further, convenience in walking can be increased because coming of the bottom of the shoe can be prevented. Still further, an explosive muscular strength can be increased through increased adherence because the real heel of the bottom of shoes is adhered to the heel constantly. Still further, various foot-ware can be worn easily regardless of the size.

1 - 7 . (canceled) 
   
   
       8 . A bottom structure of a shoe having an outsole, a midsole and an insole which are configured to be connected to each other by at least one of sewing and bonding, the bottom structure of the shoe comprising:
 a bent section between the rear heel of the shoe and the front heel of the shoe, the bent section having a concavely shaped top portion; and   an elastic restoring portion disposed in the bent section to force the rear heel of the shoe to constantly adhere to the heel of a wearer's foot.   
   
   
       9 . The bottom structure of the shoe of  claim 8 , wherein the elastic restoring portion is made with a shape memory alloy. 
   
   
       10 . The bottom structure of the shoe of  claim 9 , wherein the elastic restoring portion is provided on the top of the midsole constituting the bent section. 
   
   
       11 . The bottom structure of the shoe of  claim 9 , wherein the elastic restoring portion is provided under the bottom of the midsole constituting the bent section. 
   
   
       12 . The bottom structure of the shoe of  claim 8 , wherein the elastic restoring portion is provided on the top of the midsole constituting the bent section. 
   
   
       13 . The bottom structure of the shoe of  claim 8 , wherein the elastic restoring portion is provided under the bottom of the midsole constituting the bent section. 
   
   
       14 . The bottom structure of the shoe of  claim 8 , wherein the elastic restoring portion is connected to a settling portion which provided by cutting off a part of the bent section. 
   
   
       15 . The bottom structure of the shoe of  claim 9 , wherein the elastic restoring portion is connected to a settling portion which provided by cutting off a part of the bent section. 
   
   
       16 . The bottom structure of the shoe of  claim 8 , wherein the elastic restoring portion includes a plurality of steel plates facing each other and connected by a hinge pin where a spring is inserted. 
   
   
       17 . A bottom structure of a shoe having an outsole, a midsole and an insole which are formed by injection molding, the bottom structure of a shoe comprising:
 a bent section between the rear heel of the shoe and the front heel of the shoe, the bent section having a concavely shaped top portion; and   an elastic restoring portion disposed in the bent section to force the rear heel of the shoe to constantly adhere to the heel of a wearer's foot.   
   
   
       18 . The bottom of shoes of  claim 17 , wherein the elastic restoring portion is made with a shape memory alloy.