Sports shoe

Abstract

A sports shoe which comprises a rigid sole from which a shell protrudes, starting from a forefoot region and up to a heel region, a quarter being rotatably associated with the shell. An insole is slidingly associated within the shell, at a bottom thereof, is provided with a tip and interacts with elements for adjusting and guiding its axial position with respect to the shell.

1 . A sports shoe comprising a rigid sole from which a shell protrudes, starting from a forefoot region and up to a heel region, a quarter being rotatably associated with said shell, wherein an insole is slidingly associated within said shell, at a bottom thereof, is provided with a tip and interacts with means for adjusting and guiding the axial position of said insole with respect to said shell. 
     
     
         2 . The shoe of  claim 1 , wherein an insole made of rigid or semirigid plastic material is slidingly associated within said shell at a bottom thereof. 
     
     
         3 . The shoe of  claim 1 , wherein said tip protrudes from said insole, approximately at a toe region, and is adapted to wrap around the user's toes with the optional interposition of a soft innerboot. 
     
     
         4 . The shoe of  claim 1 , wherein said insole interacts with means for adjusting and guiding its axial position with respect to said shell. 
     
     
         5 . The shoe of  claim 1 , wherein said means for adjusting and guiding the axial position of said insole comprise a first seat which is formed in said sole at the heel region, starting from the bottom of said shell, said first seat having, in plan view, an approximately rectangular shape which is extended lengthwise in a direction of a longitudinal axis of said sole, a first hole and a second hole being provided along a same axis at mutually facing longitudinal lateral surfaces of said first seat, said first hole having a larger diameter than said second hole, said first seat being connected to a rear cavity which is formed starting from said bottom and has an approximately inverted T-shaped transverse cross-section and an approximately rectangular plan shape. 
     
     
         6 . The shoe of  claim 5 , wherein said adjustment and guiding means comprise a first tab, which protrudes approximately at right angles from the lower surface of said insole which is adjacent to said heel region and is directed, during use, toward said bottom, said first tab being slidingly arrangeable at said first seat and being transversely hollow so as to form a second oval seat at the upper or lower surface of which a set of teeth is provided transversely, a second tab protruding from said lower surface, to the rear of said first tab, and being shaped approximately complementarily with respect to said cavity and slidingly engageable therewith in order to guide and limit the sliding of said insole axially with respect to said shell, a first screw being arrangeable within said second seat and having a first stem which is provided axially with complementary teeth with respect to said set of teeth and can engage it, said first screw being rotatably arrangeable at said first and second holes. 
     
     
         7 . The shoe of  claim 6 , wherein said first screw has, at one of its ends which is adjacent to said first hole, an annular ridge which has a larger diameter than said first hole, a free end of said first screw protruding from said second hole and being rotatably coupled to said second hole by way of an axial keying of a pin which supports a disk which has a larger diameter than said second hole, a support protruding from said disk, on an opposite side with respect to said pin, and a lever being pivoted to said support by means of a first pivot and being adapted to allow the user to impart a chosen rotation to said first screw, said lever being able to rotate against a lateral surface of said sole and being rigidly associable therewith, in a chosen position, by way of the insertion of second pivots, which protrude approximately at right angles from the lateral surface of said sole, in a third hole formed in said lever. 
     
     
         8 . The shoe of  claim 1 , wherein a slot is formed in an inner lateral surface of said shell, starting from said forefoot region, and has an approximately U-shaped plan configuration, so as to follow partially a profile of said shell, partly affecting front end and side walls of said shell, starting from the bottom of the shell. 
     
     
         9 . The shoe of  claim 8 , wherein the ends of said slot that are directed toward said heel region are blended with said inner lateral surface of said shell through two inclined surfaces. 
     
     
         10 . The shoe of  claim 3 , wherein the dimensions of said tip are such that in a condition of maximum retraction of said insole with respect to said shell, and therefore at a minimum size, said tip is arranged outside said slot and is compressed radially by said inner lateral surface of said shell, thus reducing a space inside said sports shoe which is available to accommodate the foot of the user and said optional innerboot. 
     
     
         11 . The shoe of  claim 10 , wherein in said condition of maximum retraction said tip is not deformed at right angles to said bottom of said shell. 
     
     
         12 . The shoe of  claim 10 , wherein in the condition of minimum retraction of said insole with respect to said shell, and therefore at the maximum size, said tip is arranged at said slot and is in its non-deformed condition, providing more space to the foot of the user or to said optional innerboot.