Inner sole including an air bag
View Patent ↗An inner sole includes a heel air bag for supporting the heel and a first arch air bag for supporting the plantar arch which is connected to the heel air bag through a passageway. The heel air bag and the primary arch air bag are coupled to the bottom surface of the inner sole. A second arch air bag is disposed over the first arch air bag to communicate with the primary arch air bag. When the heel air bag is pressed, air pressure is uniformly applied to the second arch air bag through the first arch air bag.
1. An inner sole assembly of a shoe said inner sole assembly comprising:
an inner sole;
a heel airbag for supporting a heel portion of a sole of a foot;
an arch airbag for supporting an arch portion of the sole of the foot, said arch airbag including:
a first arch airbag connected to said heel airbag via a channel so as to communicate with said heel airbag; and
a second arch airbag overlying and coupled to said first arch airbag such that said second arch airbag communicates with said first arch airbag, said first arch airbag and said second arch airbag being stacked on each other in a vertical direction; and
an auxiliary sole coupled to an undersurface of said inner sole while surrounding said heel airbag and said first arch airbag,
wherein said inner sole, said arch airbag, and said auxiliary sole are configured such that, when said heel airbag is pressed, air pressure causes said first arch airbag and then said second arch airbag to expand upward, thereby supporting the arch portion of the sole of the foot.
2. The inner sole assembly of claim 1 , wherein said inner sole has airbag recesses in said undersurface thereof, said airbag recesses being depressed inward such that said heel airbag and said second arch airbag are seated within respective airbag recesses.
3. The inner sole assembly of claim 1 , wherein said first arch airbag and said second arch airbag are arranged such that said second arch airbag is to be located closer to the arch portion of the sole of the foot than said first arch airbag.