Footwear having shock-absorbing means

Abstract

Disclosed herein is footwear. The footwear includes a midsole, a shock absorbing means, and an outsole. The midsole has on an upper surface thereof an air passage. At least one insertion recess is provided in a lower surface of the midsole and communicates with the air passage. The shock absorbing means is made of an elastic material and movable up and down by flow of air present in the shock absorbing means. The upper end of the shock absorbing means is opened and secured to the insertion recess of the midsole, and the lower end of the shock absorbing means is closed and protrudes downwards. The outsole functions to secure the shock absorbing means to the midsole. The present invention provides footwear having a shock absorbing means having a simple structure and a superior shock absorbing function, thus having high durability.

1 . Footwear having shock absorbing means, comprising:
 a midsole, comprising:   an air passage provided on an upper surface of the midsole; and   at least one insertion recess provided in a lower surface of the midsole, and communicating with the air passage;   a shock absorbing means made of an elastic material and movable up and down by flow of air present in the shock absorbing means, an upper end of the shock absorbing means being opened and secured to the insertion recess of the midsole, a lower end of the shock absorbing means being closed and protruding downwards; and   an outsole for securing the shock absorbing means to the midsole.   
     
     
         2 . The footwear according to  claim 1 , wherein the outsole is coupled to the midsole such that a side of the shock absorbing means is open to an exterior. 
     
     
         3 . The footwear according to  claim 1 , wherein the shock absorbing means further comprises:
 a plurality of protrusions provided on an inner surface of the shock absorbing means.   
     
     
         4 . The footwear according to  claim 1 , wherein the shock absorbing means comprises:
 at least one unevenness provided on a bottom of the shock absorbing means.   
     
     
         5 . The footwear according to  claim 4 , wherein the outsole is secured to be in close contact with a protruding end of the unevenness, so that a space defined by the unevenness forms a shock absorbing space isolated from the exterior. 
     
     
         6 . The footwear according to  claim 1 , wherein the midsole comprises a fitting hole at a predetermined position in the insertion recess, and a fitting pin is provided on an upper end of the shock absorbing means to correspond to the fitting hole. 
     
     
         7 . The footwear according to  claim 1 , wherein the shock absorbing means further comprises:
 a check valve mounted to a side surface of the shock absorbing means to control the flow of air.   
     
     
         8 . The footwear according to  claim 1 , wherein an air flow hole is formed in the side surface of the shock absorbing means, a through hole is formed in a side surface of the midsole to correspond to the air flow hole of the shock absorbing means and communicate with the insertion recess, and a check valve is mounted to the through hole to control the flow of air. 
     
     
         9 . The footwear according to  claim 1 , further comprising:
 a reinforcing plate interposed between a lower surface of the midsole including the shock absorbing means and the outsole.