Insole comprising a curve support
The invention relates to a plastic insole comprising a curve support for the metatarsus. Provided in the region of the greatest height of the curve support on the underside of the insole are a plurality of longitudinally extending stiffening ribs as well as grooves, said grooves extending from the toe region in the direction of the heel as far as the metatarsal region and so curving round in the metatarsal region to the lateral side of the insole and terminating in said region that extending between the grooves are spring strips issuing from each of the toes, wherein material can be removed from the spring strips and stiffening ribs in order individually to adapt the thickness thereof.
1. Plastic insole comprising:
a curve support ( 1 ) for the metatarsus, the curve support ( 1 ) including:
a toe region ( 5 ),
a metatarsal region ( 6 ),
a heel ( 21 )
a plurality of longitudinally extending stiffening ribs ( 2 , 3 , 4 ) and a plurality of grooves ( 7 , 8 , 9 , 10 ) formed on a region of greatest height of the curve support ( 1 ) on an underside of the insole, said grooves ( 7 , 8 , 9 , 10 ) extending from the toe region ( 5 ) in a direction of the heel ( 21 ), curving toward a lateral side of the metatarsal region ( 6 ) of the curve support ( 1 ), and terminating in the metatarsal region ( 6 ) of the curve support ( 1 ), and
a spring strip ( 23 , 24 , 25 , 26 , 27 ) issuing from each toe of the toe region ( 5 ),
wherein material can be removed from the spring strips ( 23 , 24 , 25 , 26 , 27 ) and stiffening ribs ( 2 , 3 , 4 ) in order individually to adapt the thickness thereof.
2. The insole according to claim 1 , wherein the curve support ( 1 ) is of a hard plastic and, in the heel ( 21 ) and the toe ( 5 ) regions, a soft plastic fills out regions left open by the curve support ( 1 ),
wherein, in the toe region ( 5 ), the soft plastic bridges the spring strips ( 23 , 24 , 25 , 26 , 27 ), said spring strips ( 23 , 24 , 25 , 26 , 27 ) being separated in said toe region ( 5 ) by slits ( 13 , 14 , 15 , 16 ).
3. The insole according to claim 2 , wherein the soft plastic, as an overlay over the curve support ( 1 ), at least partially covers said curve support ( 1 ).