Insole

Abstract

Disclosed is a insole arranged on an upper surface of an innersole in a shoe. The insole includes: an intermediate supporting portion 41 coming into close contact with a center portion of a foot sole, including an arch, and having a plurality of elastic protrusions P formed on a lower surface of grids L defining grid-type thru-holes; and a rear supporting portion 42 extending from the rear end of the intermediate supporting portion 11 to a heel of the foot in order to make close contact with a rear portion of the foot sole, and having a plurality of stationary protrusions P′ formed on the lower surface of the rear supporting portion 42 to protrude downward. The insole can improve air permeability through the thru-holes, and in addition always makes close contact with the foot sole through elastic protrusions formed on the lower surface thereof so as to buffer impact on the shoe. Further, the stationary protrusions formed on the lower surface of the insole are stuck in the innersole, thereby preventing movement of the insole inserted in the shoe.

1 . A insole to be stacked on the upper surface of an innersole of the shoe, on the upper surface of an outer sole, or on the upper surface of a slip-sole, the insole comprising:
 an intermediate supporting portion  41  coming into close contact with a center portion of a foot sole, including an arch, and having a plurality of elastic protrusions P formed on a lower surface of grids L defining grid-type thru-holes: and   a rear supporting portion  42  extending from a rear end of the intermediate supporting portion  11  to a heel of the foot to make close contact with a rear portion of the foot sole, and having a plurality of stationary protrusions P′ formed on the lower surface of the rear supporting portion  42  to protrude downward.   
     
     
         2 . The insole as claimed in  claim 1 , wherein a thru-hole  11  is formed at a center portion of the rear supporting portion  42 . 
     
     
         3 . The insole as claimed in  claim 1 , wherein the elastic protrusions P are longer than the stationary protrusions P′. 
     
     
         4 . The insole as claimed in  claim 1 , wherein the distance between the outermost stationary protrusions P′ and the rear end of the rear supporting portion  42  is about 20˜40 nm. 
     
     
         5 . The insole as claimed in  claim 1 , wherein the intermediate supporting portion  41 , in which the thru-holes h are formed, is thinner than the rear supporting portion  42 . 
     
     
         6 . The insole as claimed in  claim 1 , wherein the upper surfaces of the intermediate supporting portion  41  and the rear supporting portion  42  are arranged on the same plane, and the lower surface of the intermediate supporting portion  41 , in which the thru-holes h are formed, is higher than the lower surface of the rear supporting portion  42 . 
     
     
         7 . The insole as claimed in  claim 1 , wherein an upper cover  43 , made of any one selected from EVA resin, leather, and polyurethane, is attached to the entire upper surface of the intermediate supporting portion  41  and the rear supporting portion  42 . 
     
     
         8 . The insole as claimed in  claim 1 , wherein a front supporting portion  44  is additionally formed at and extends from a front end of the intermediate supporting portion  41  to form the shape of the foot sole, a plurality of thru-holes h are formed in the front supporting portion  41  and the rear supporting portion  42  to have a grid shape, and a plurality of elastic protrusions P are formed on a lower surface of grids L defining the thru-holes.