Insole for sports shoes, particularly for golf

Abstract

An insole for sports shoes, particularly for golf, constituted by an anatomically contoured body which has portions made of different materials which form regions with differentiated mechanical properties in order to optimize the discharge of the forces affecting the foot; these regions are at least: a first phalangeal region; a second metatarsal region; a third calcaneal region.

What is claimed is: 
     
         1 . An insole for sports shoes, constituted by an anatomically contoured body that comprises a plurality of portions made of materials that differ from each other so as to provide a plurality of regions with differentiated mechanical properties suitable to optimize discharge of various forces affecting a foot of a user, said regions comprising at least:
 a first phalangeal region,   a second metatarsal region,   a third calcaneal region.   
     
     
         2 . The insole of  claim 1 , comprising in said first phalangeal region thereof a hallux portion which corresponds to an area where a hallux of a user is located, in use, said hallux portion being made so as to cushion thrusts of the hallux. 
     
     
         3 . The insole of  claim 2 , further comprising shock-absorbing portions that are provided in said second metatarsal region thereof, said shock-absorbing portions including:
 a first shock-absorbing portion located to contact a first metatarsal head of the foot of a user,   a second shock-absorbing portion which is located so as to correspond to central metatarsal heads of the foot,   and a third shock-absorbing portion which is located so as to correspond to a fifth metatarsal head of the foot.   
     
     
         4 . The insole of  claim 3 , comprising a central shock-absorbing portion located in said third calcaneal region, at the heel, and a more rigid portion at an outer and rear band of said calcaneal region. 
     
     
         5 . The insole of  claim 4 , wherein said more rigid portion lies, at said outer and rear band of the calcaneal region, through an entire thickness of the insole to a lower face thereof, forming a supination wedge. 
     
     
         6 . The insole of  claim 1 , wherein said anatomically contoured body is made of closed-cell expanded microporous material. 
     
     
         7 . The insole of  claim 6 , wherein said closed-cell expanded microporous material comprises ethyl vinyl acetate EVA. 
     
     
         8 . The insole of  claim 7 , wherein said closed-cell expanded microporous material has a hardness, according to the UNI EN 7619/2000 standard, comprised between 27 and 33 Shore A, with a preferred value of 30 Shore A. 
     
     
         9 . The insole of  claim 8 , wherein said closed-cell expanded microporous material has a density, according to the UNI EN 10902/2000 standard, comprised between 130 and 160 g/dm 3 , with a preferred value of 145 g/dm 3 . 
     
     
         10 . The insole of  claim 9 , wherein said closed-cell expanded microporous material has a resilience, according to the UNI 6357/1968 standard, comprised between 38% and 42%, with a preferred value of 40%. 
     
     
         11 . The insole of  claim 4 , wherein said shock-absorbing portions for the hallux, for the first metatarsal head, for the central metatarsal heads, for the fifth metatarsal head and for the heel are made of open-cell shock-absorbing microcellular polyurethane material. 
     
     
         12 . The insole of  claim 11 , wherein said open-cell microcellular polyurethane material has a hardness, according to the UNI EN 7619/2000 standard, comprised between 20 and 26 Shore A, with a preferred value of 23 Shore A. 
     
     
         13 . The insole of  claim 12 , wherein said open-cell microcellular polyurethane material has a density, according to the UNI EN 10902/2000 standard, comprised between 279 and 341 g/dm 3 , with a preferred value of 310 g/dm 3 . 
     
     
         14 . The insole of  claim 13 , wherein said open-cell microcellular polyurethane material has a resilience, according to the UNI 6357/1968 standard, comprised between 3.8% and 4.2%, with a preferred value of 4%. 
     
     
         15 . The insole of  claim 5 , wherein said more rigid portion is made at said outer rear band of the calcaneal region of closed-cell expanded microporous material. 
     
     
         16 . The insole of  claim 15 , wherein said closed-cell expanded microporous material comprises EVA. 
     
     
         17 . The insole of  claim 16 , wherein said closed-cell expanded microporous material has a hardness, according to the UNI EN 7619/2000 standard, comprised between 40 and 50 Shore A, with a preferred value of 45 Shore A. 
     
     
         18 . The insole of  claim 17 , wherein said closed-cell expanded microporous material has a density, according to the UNI EN 10902/2000 standard, comprised between 207 and 253 g/dm 3 , with a preferred value of 230 g/dm 3 . 
     
     
         19 . The insole of  claim 18 , wherein said closed-cell expanded microporous material has a resilience, according to the UNI 6357/1968 standard, comprised between 33% and 37%, with a preferred value of 35%. 
     
     
         20 . The insole of  claim 4 , wherein said anatomically contoured body is provided with perimetric raised containment portions. 
     
     
         21 . The insole of  claim 20 , comprising a first perimetric raised portion that is contiguous to said third shock-absorbing portion for the fifth metatarsal head, on a side corresponding to a longitudinal arch of the foot. 
     
     
         22 . The insole of  claim 21 , further comprising a second perimetric raised portion that protrudes on an outer side of said calcaneal region, at a lateral part of said more rigid portion. 
     
     
         23 . The insole of  claim 22 , comprising a discharge recess corresponding to a styloid of a fifth metatarsal bone of a foot of a user, that is provided between said first raised portion and said second raised portion. 
     
     
         24 . The insole of  claim 22 , comprising a third perimetric raised portion of said anatomical body, which lies between said metatarsal region and said calcaneal region, for supporting the longitudinal arch of the foot. 
     
     
         25 . A golf shoe comprising an insole as set forth in  claim 1 .