Ventilating insole structure

Abstract

A ventilating insole structure includes an upper insole, a foam pad, and a lower insole. The upper insole is formed with air vents, an accommodation trough, and a circumferential wall around the accommodation trough. The foam pad is shaped to fit in the accommodation trough. The circumferential wall is configured to enclose the foam pad and the lower insole. The circumferential wall close to a heel portion of the upper insole is provided with a notch. The notch is to receive a foam lug extending from the foam pad or one or multiple air guide pipes to prop up the upper and lower insoles at the notch. In operation with an air outlet of a shoe, the foam lug and the air guide pipe can extend outward as an air passage for fresh air to flow in or out of the shoe so as to circulate air.

What is claimed is: 
     
         1 . A ventilating insole structure, comprising an upper insole, a foam pad, and a lower insole, the upper insole being formed with air vents at a front portion thereof, an accommodation trough on a bottom surface thereof, and a circumferential wall around the accommodation trough, the foam pad being an elastic, porous and ventilative pad shaped to fit in the accommodation trough, the circumferential wall being configured to enclose the foam pad and the lower insole, the foam pad being sandwiched and positioned between the upper and lower insoles, characterized by: the circumferential wall close to a heel portion of the upper insole being provided with a notch, the notch being adapted to receive a foam lug extending from a rear end of the foam pad, the foam lug being shaped to fit in the notch to prop up the upper and lower insoles at the notch to function as an air port for air between the upper and lower insoles to enter and exit to circulate air. 
     
     
         2 . The ventilating insole structure as claimed in claimed in  claim 1 , wherein a bottom of a heel portion of a shoe is formed with an air outlet corresponding to the air port, the foam lug of the foam pad being inserted into the air outlet for guiding fresh air into the shoe. 
     
     
         3 . The ventilating insole structure as claimed in claimed in  claim 1 , wherein the circumferential wall close to the heel portion of the upper insole is provided with one or a plurality of notches configured to receive an air guide pipe therein, the air guide pipe corresponding in number and in shape to the notch for the rear end of the foam pad to extend out rearward, the air guide pipe being adapted for air between the upper and lower insoles to enter and exit so as to circulate air. 
     
     
         4 . The ventilating insole structure as claimed in claimed in  claim 3 , wherein a bottom of a heel portion of a shoe is formed with an air outlet corresponding to the notch, the air guide pipe extending outward to be fitted in the air outlet, a distal end of the air guide pipe extending out of the shoe to circulate air. 
     
     
         5 . The ventilating insole structure as claimed in claimed in  claim 1 , wherein the circumferential wall close to the heel portion of the upper insole is provided with one or a plurality of notches configured to receive a converting pipe therein, the converting pipe corresponding in number to the notch for the rear end of the foam pad to extend out rearward, the converting pipe being adapted to prop up the upper insole and the lower insole at the notch for air between the upper and lower insoles to enter and exit so as to circulate air, a distal end of the converting pipe being connected with a socket of an L-shaped sleeve to form a bent and extendable air passage, the sleeve being hidden at an inner side of a shoe, a distal end of the sleeve extending out of the shoe, the converting pipe and the L-shaped sleeve guiding fresh air in and out of the shoe to circulate air. 
     
     
         6 . The ventilating insole structure as claimed in claimed in  claim 1 , wherein the foam pad with the foam lug is fitted in the accommodation trough of the upper insole and the notch by the circumferential wall and attached to a top surface of a sole, the foam pad being sandwiched and positioned between the upper insole and the sole, a bottom of a heel portion of the sole being formed with an air outlet corresponding to the foam lug extending from the rear end of the foam pad, the foam lug extending outward for air to enter and exit so as to circulate air. 
     
     
         7 . The ventilating insole structure as claimed in claimed in  claim 1 , wherein the foam pad is fitted in the accommodation trough of the upper insole by the circumferential wall and attached to a top surface of the lower insole, the foam pad being sandwiched and positioned between the upper and lower insoles, a central portion of a heel section of the lower insole being formed with an air guide hole, a heel pad being attached to the lower insole, the heel pad being formed with a blind hole at a rear section thereof, the blind hole being aligned with the air guide hole to cover the air guide hole, the blind hole being connected with an air leading pipe, a distal end of the air leading pipe extending out of a shoe to circulate air.