Insole with an adjustable arch support structure

Abstract

An insole with an adjustable arch support structure comprises a middle sole and a support sole. The middle sole includes a top surface and a bottom surface, the top surface is formed with an arch portion, the middle sole is provided at the arch portion with a support portion formed in the shape of the arch of a user's foot and a lateral support portion located adjacent to the support portion. The bottom surface of the middle sole is formed with a buffer chamber which is concaved toward the support portion, and the lower edge of the lateral support portion is formed with a lateral support edge which is located around a periphery of the buffer chamber. The support sole is received in the buffer chamber of the middle sole and includes a top surface and a bottom surface.

1 . An insole with an adjustable arch support structure, comprising a middle sole and a support sole:
 the middle sole including a top surface and a bottom surface, the top surface being formed with an arch portion, the middle sole being provided at the arch portion with a support portion formed in the shape of the arch of a user's foot and a lateral support portion located adjacent to the support portion, the bottom surface of the middle sole being formed with a buffer chamber which is concaved toward the support portion, the lower edge of the lateral support portion being formed with a lateral support edge which is located around a periphery of the buffer chamber;   the support sole being received in the buffer chamber of the middle sole and including a top surface and a bottom surface;   when a user's foot stands on the top surface of the middle sole, a vertical load will be applied to the support portion and transmitted to the support sole via the buffer chamber, causing the support sole to deform in a vertical direction.   
     
     
         2 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the buffer chamber of the middle sole has a depth of 5-13 mm. 
     
     
         3 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the support sole has a thickness of 1-18 mm. 
     
     
         4 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the support sole is elastic, and a proportion of a thickness of the support sole to a depth of the buffer chamber of the middle sole ranges from 0.05-1.8. 
     
     
         5 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein when a thickness of the support sole is smaller than a depth of the buffer chamber of the middle sole, a proportion of the thickness of the support sole to the depth of the buffer chamber of the middle sole ranges is: 0.05-0.9, when the thickness of the support sole is equal to the depth of the buffer chamber of the middle sole, the proportion of the thickness of the support sole to the depth of the buffer chamber of the middle sole ranges is: 0.85-1.15, and when the thickness of the support sole is greater than a depth of the buffer chamber of the middle sole, the proportion of the thickness of the support sole to the depth of the buffer chamber of the middle sole is: 1.06-1.8. 
     
     
         6 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein a proportion of a height to a width of the support sole ranges from 0.075 to 0.56. 
     
     
         7 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the support sole is elastic. 
     
     
         8 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the lateral support edge is formed at a lower edge of the support portion and thinner than the rest part of the periphery of the buffer chamber. 
     
     
         9 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the buffer chamber is formed in a center thereof with a groove, and the top surface of the support sole is also formed with a groove, a fixing device which is a hook and loop tape and consists of a male tape and a female tape which are received in the grooves of the buffer chamber and the support sole, respectively, to enable the top surface of the support sole to be surely abutted against an inner surface of the buffer chamber. 
     
     
         10 . The insole with an adjustable arch support structure as claimed in  claim 1 , wherein the top surface is a two dimensional arch-shaped structure.