Laterally and medially flexible midsole

Abstract

Disclosed herein is a midsole ( 10 ) for a sport shoe, the midsole ( 10 ) comprising: a forefoot area (FA), a heel area (HA) and a midfoot area (MA) being arranged between the forefoot area (FA) and the heel area (HA); a top layer ( 101 ) and an opposing base layer ( 102 ); a heel edge ( 103 ) and a midsole tip ( 104 ), wherein a longitudinal direction (LO) of the midsole ( 10 ) extends from the heel edge ( 103 ) to the midsole tip ( 104 ); one or more horizontal tilting slits ( 105 ) being arranged on a medial side and/or on a lateral side of the midsole ( 1 ), wherein the one or more horizontal tilting slits ( 105 ) horizontally divide the midsole ( 1 ) in a midsole top portion ( 106 ) and a midsole base portion ( 107 ), wherein each horizontal tilting slit ( 105 ) is configured to tilt the midsole top portion ( 106 ) with respect to the midsole base portion ( 107 ).

1 . A midsole for a sport shoe, the midsole comprising:
 a. a forefoot area, a heel area and a midfoot area arranged between the forefoot area and the heel area;   b. a top layer and an opposing base layer;   c. a heel edge and a midsole tip, wherein a longitudinal direction of the midsole extends from the heel edge to the midsole tip;   d. one or more horizontal tilting slits being arranged on a medial side and/or on a lateral side of the midsole, wherein the one or more horizontal tilting slits horizontally divide the midsole in a midsole top portion and a midsole base portion, wherein each horizontal tilting slit is configured to tilt the midsole top portion with respect to the midsole base portion.   
     
     
         2 . The midsole according to  claim 1 , wherein the midsole comprises a medial sided horizontal tilting slit and/or a lateral sided horizontal tilting slit. 
     
     
         3 . The midsole according to  claim 1 , wherein the one or more horizontal tilting slits are arranged in the midfoot area of the midsole or only in the midfoot area of the midsole. 
     
     
         4 . The midsole according to  claim 1 , wherein the one or more horizontal tilting slits each have a depth of 5 mm to 8 mm. 
     
     
         5 . The midsole according to  claim 1 , wherein the one or more horizontal tilting slits each have a depth which is 4% and 25% of a total width of the midsole at the position of the corresponding horizontal tilting slit of the midsole. 
     
     
         6 . The midsole according to  claim 1 , wherein the midsole comprises one or more tiltable blocks, wherein each tiltable block is partially defined by a horizontal tilting slit. 
     
     
         7 . The midsole according to  claim 6 , wherein each tiltable block is further defined by one or more sideward slits, wherein each sideward slit extends from the horizontal tilting slit to the top layer of the midsole. 
     
     
         8 . The midsole according to  claim 7 , wherein at least some of the tiltable blocks have in the cross section along the longitudinal direction and perpendicular to the transverse direction a trapezoid shape or, a shape of a rectangle or a parallelogram. 
     
     
         9 . The midsole according to  claim 1 , wherein the midsole defines a plurality of recessed pockets which are open towards the top layer and wherein at least a some of the recessed pockets are in the longitudinal direction arranged one after another. 
     
     
         10 . The midsole according to  claim 9 , wherein the recessed pockets are arranged at least in the forefoot area. 
     
     
         11 . The midsole according to claim  19 , wherein the central notch extends from the forefoot area through the midfoot area to the heel area. 
     
     
         12 . The shoe sole according to claim  20 , wherein the elastic plate comprises a plurality of protrusions which are inserted into the recessed pockets of the midsole. 
     
     
         13 . A shoe comprising a midsole according to  claim 1 , wherein the shoe further comprises an upper being attached to the midsole. 
     
     
         14 . The shoe according to  claim 13 , wherein the shoe further comprises a support mechanism, wherein the support mechanism is connected to the midsole top portion above the one or more horizontal tilting slits and extends over the foot arch of the upper and wherein the support mechanism is configured to support tilting of the midsole top portion with respect to the midsole base portion. 
     
     
         15 . The shoe according to  claim 14 , wherein the support mechanism comprises a plurality of straps. 
     
     
         16 . The midsole according to  claim 1 , wherein the one or more horizontal tilting slits each have a depth of 3 mm to 25 mm. 
     
     
         17 . The midsole according to  claim 1 , wherein the one or more horizontal tilting slits each have a depth which is 5% and 12% of a total width of the midsole at the position of the corresponding horizontal tilting slit of the midsole. 
     
     
         18 . The midsole according to  claim 10 , wherein the recessed pockets are arranged in the forefoot area and in the midfoot area. 
     
     
         19 . The midsole according to  claim 1 , further comprising a central notch extending in the longitudinal direction through the midfoot area. 
     
     
         20 . A shoe sole comprising a midsole according to  claim 1 , wherein the shoe sole further comprises an elastic plate arranged on the top layer of the midsole.