In-Shoe Support Device For Heeled Shoes

Abstract

Disclosed is an in-shoe support device for heeled shoes, comprising: a first end, a second end, a first support portion, a second support portion, and a third support portion. The design of the thickness distribution and its correspondence to the foot position in heeled shoes can alter a curvature of a foot bed of a heeled shoe. As such, it is able to increase the contact areas of midfoot and rearfoot, and provide sufficient support for the midfoot. Also, it can reduce the tendency of a foot to slide forward in the heeled shoe, creating a backward-shifting of a center of gravity, and creating a better weight-bearing environment for the foot.

What is claimed is: 
     
         1 . An in-shoe support device for heeled shoes, comprising:
 a main body, which includes:
 a first end; 
 a second end, disposed opposite to said first end,
 such that a maximum thickness of said main body is disposed in a location between said first end and said second end, and said the maximum thickness decrements from that said location to said first end and said second end; 
 
 a first support portion; 
 a second support portion; and 
 a third support portion, such that said first support portion extends from said first end to said second end, said third support portion extends from said second end to said first end, said second support portion is a middle portion which connects said first support portion and said third support portion, wherein, a length of said main body is defined as a distance between said first end and said second end, said length of said first support portion is 20% to 45% of said length of said main body, said length of said second support portion is 10% to 30% of said length of said main body, and said length of said third support portion is 30% to 55% of said length of said main body. 
   
     
     
         2 . The in-shoe support device for heeled shoes as claimed in  claim 1 , wherein
 said maximum thickness is 1% to 20% of said length of said main body.   
     
     
         3 . The in-shoe support device for heeled shoes as claimed in  claim 1 , wherein
 said maximum thickness is located in said second support portion.   
     
     
         4 . The in-shoe support device for heeled shoes as claimed in  claim 3 , wherein
 said first support portion, said second support portion, and said third support portion are provided respectively with a first maximum width, a second maximum width, and a third maximum width, said third maximum width is greater than said first maximum width and said second maximum width.   
     
     
         5 . The in-shoe support device for heeled shoes as claimed in  claim 4 , wherein
 said first maximum width is not greater than said second maximum width.   
     
     
         6 . The in-shoe support device for heeled shoes as claimed in  claim 4 , wherein
 said first maximum width and said second maximum width are 45% to 90% of said third maximum width.   
     
     
         7 . The in-shoe support device for heeled shoes as claimed in  claim 4 , wherein
 said first maximum width is between 1.5 cm to 5.5 cm.   
     
     
         8 . The in-shoe support device for heeled shoes as claimed in  claim 1 , wherein
 said second end is located close to a heel of a shoe, while said first end is disposed toward a front of said shoe.   
     
     
         9 . The in-shoe support device for heeled shoes as claimed in  claim 1 , wherein
 said second end corresponds to a wearer's calcaneus, while a position of said the maximum thickness corresponds to a central region of wearer's midfoot, and said length of said main body is 40% to 70% of a foot length of a wearer.