Air-cushioned heel with breathing function

Abstract

An air-cushioned heel with the breathing function has an airbag inside the shoe outsole and recess. The airbag has a panel with a profile compliant with the recess. The bottom of the panel extends downward a plurality of wrinkled sacs. The sacs are connected with intake ducts to extend into the intake passage, and at least one exhaust duct to extend into a vent. In practice, the airbag is compressed/expanded repeatedly to produce a breathing effect, so that air inside the shoe exchanges with the ambient environment. Moreover, the wrinkled sacs can effectively enhance the elastic restoring force of the airbag, to increase the efficiency of the air exchange. It also avoids the drawbacks of elastic fatigue and collapse due to prolonged use of the airbag.

What is claimed is: 
     
         1 . An air-cushioned heel with the breathing function, comprising:
 an outsole, which has a recess for accommodating an airbag at the heel, an intake passage at the forefoot connecting to the recess, and at least one vent hole on the side of the heel that connects to the recess; and   an airbag, which is disposed inside the recess and has a panel whose profile matches with the recess, wherein the panel extends downwardly and integrally a plurality of wrinkled sacs, each of which has an intake duct extending into the intake passage and at least one exhaust duct extending into the vent hole.   
     
     
         2 . The air-cushioned heel with the breathing function of  claim 1 , wherein the airbag is formed with a plurality of arc sections retreated toward the sacs at the outskirt of the sacs. 
     
     
         3 . The air-cushioned heel with the breathing function of  claim 2 , wherein the inner wall of the recess of the outsole is provided with protruding parts corresponding to the arc sections.