Foot stabilizing device

Abstract

The present invention provides a foot stabilizing device, which can be an insole body or a sole body having a foot contacting surface. The insole body or the foot contacting surface of the sole body has a toe region, a foot sole region, a foot arch region, and a foot heel region for corresponding to the toes, the foot sole, the foot arch and the foot heel of a user's foot, respectively. The present invention is characterized in that a reducing stress structure is formed between a center position of a rear end of the toe region and a middle portion of the foot sole region in longitudinal direction. Thus, the contacting force between the use's foot and the reducing stress structure can be minimized and the user's foot can be stabilized on the insole body or the sole body thereby to prevent the foot from sliding forwardly or around.

What is claimed is: 
     
         1 . A foot stabilizing device, being an insole body with a toe region, a foot sole region, a foot arch region, and a foot heel region disposed sequentially from an insole front-end to an insole rear-end, characterized in that the insole body comprises a reducing stress structure extended longitudinally from the center position of a rear end of the toe region to the middle position of the foot sole region. 
     
     
         2 . The foot stabilizing device of  claim 1 , wherein the reducing stress structure has a width equal to one-third of the width of the insole body width, and the reducing stress structure is in an oval shape, and the oval shape has a tapered end proximate to the toe region. 
     
     
         3 . The foot stabilizing device of  claim 2 , further comprising a first balancing bump disposed in a region of the reducing stress structure and on a line of symmetry of the reducing stress structure. 
     
     
         4 . The foot stabilizing device of  claim 3 , further comprising a second balancing bump disposed on an outer side of the region of the reducing stress structure and on an extension line of the line of symmetry. 
     
     
         5 . The foot stabilizing device of  claim 1 , wherein the reducing stress structure is further extended towards the foot heel region and extended to a front end of the foot arch region, and the reducing stress structure has a width equal to one-third of the width of the insole body, and the reducing stress structure is in a prolate elliptical shape, and both ends of the prolate elliptical shape have a tapered end. 
     
     
         6 . The foot stabilizing device of  claim 5 , further comprising a first balancing bump and a second balancing bump, both disposed in a region of the reducing stress structure and on a line of symmetry of the reducing stress structure.  7 , The foot stabilizing device of  claim 5 , wherein the reducing stress structure has a length from 8.5 cm to 12 cm and a width from 2.5 cm to 4 cm. 
     
     
         8 . The foot stabilizing device of  claim 1 , further comprising an assistant reducing stress structure disposed at a lateral side of the foot arch region and at a position along an edge of the insole body, and having a meniscus shape for reducing the stress imposed on a user's outer arch. 
     
     
         9 . The foot stabilizing device of  claim 8 , wherein the reducing stress structure and the assistant reducing stress structure is a structure with a concave upper surface, a concave lower surface, or both concave upper and lower surfaces. 
     
     
         10 . The foot stabilizing device of  claim 8 , wherein the reducing stress structure or the assistant reducing stress structure is made of a soft substance with a hardness smaller than the hardness of the insole body. 
     
     
         11 . A foot stabilizing device, being a sole body with a foot contacting surface, and the foot contacting surface having a toe region, a foot sole region, a foot arch region and a foot heel region disposed sequentially from a sole front-end to a sole rear-end, characterized in that the foot contacting surface comprises a reducing stress structure, and the reducing stress structure is extended longitudinally from the center position of a rear end of the toe region to the middle position of the foot sole region. 
     
     
         12 . The foot stabilizing device of  claim 11 , wherein the reducing stress structure has a width equal to one-third of the width of the foot contacting surface width, and the reducing stress structure is in an oval shape having a tapered end proximate to the toe region. The foot stabilizing device of  claim 12 , further comprising a first balancing bump disposed in a region of the reducing stress structure and on a line of symmetry of the reducing stress structure. 
     
     
         14 . The foot stabilizing device of claim  13 , further comprising a second balancing bump disposed on an outer side of the region of the reducing stress structure and on an extension line of the line of symmetry. 
     
     
         15 . The foot stabilizing device of  claim 11 , wherein the reducing stress structure is further extended towards the foot heel region and extended to a front end of the foot arch region, and the reducing stress structure has a width equal to one-third of the width of the foot contacting surface, and the reducing stress structure is in a prolate elliptical shape, and both ends of the prolate elliptical shape have a tapered end. 
     
     
         16 . The foot stabilizing device of  claim 15 , further comprising a first balancing bump and a second balancing bump, both disposed in a region of the reducing stress structure and on a line of symmetry of the reducing stress structure. 
     
     
         17 . The foot stabilizing device of  claim 15 , wherein the reducing stress structure has a length from 8.5 cm to 12 cm and a width from 2.5 cm to 4 cm. 
     
     
         18 . The foot stabilizing device of  claim 11 , further comprising an assistant reducing stress structure disposed at a lateral side of the foot arch region and at a position along an edge of the foot contacting surface and having a meniscus shape for reducing the stress imposed on a user's outer arch. 
     
     
         19 . The foot stabilizing device of  claim 18 , wherein the reducing stress structure or the assistant reducing stress structure is a structure with a concave upper surface. 
     
     
         20 . The foot stabilizing device of  claim 18 , wherein the reducing stress structure or the assistant reducing stress structure is made of a soft substance with a hardness smaller than the hardness of the sole body.