Shoe sole with interchangeable outsole

Abstract

A footwear sole with an interchangeable outsole, where the sole is divided into at least two parts; an upper part or midsole (2) fixed to the body of the footwear, and an interchangeable lower part or outsole (3) that is removably attached to the fixed midsole by means of a mechanical dovetail attachment system (4a, 4b) of the lower side of the fixed midsole (2) to the upper side of the interchangeable outsole, enabling the replacement of the same by another similar outsole or another different outsole, either with a different type of surface (3a), and/or a different height, and/or with a different structure and/or a different appearance, such as colour, texture and/or material.

1 . Shoe sole with interchangeable outsole comprising:
 a fixed upper part ( 2 ), which is fixed to the body of the footwear, and   an interchangeable lower part ( 3 )   wherein the interchangeable lower part ( 3 ) is removably coupled to the fixed part by means of a tongue and a groove mechanical coupling system ( 4   a ,  4   b ) between the lower face of the fixed upper part ( 2 ) and the upper face of the interchangeable lower part ( 3 ), allowing the substitution of the interchangeable lower part ( 3 ) for a different one   wherein the interchangeable lower part can be of a different type of sole ( 3   a ), a sole of different height, a sole of different structure, a sole with different appearance, such as color, texture, or material.   
     
     
         2 . The shoe sole according to  claim 1 , wherein the coupling system ( 4   a ,  4   b ) is formed by a plurality of transverse channels ( 4   a ), and complementary projections ( 4   b ), of dovetail section configuration, so that the interchangeable lower part ( 3 ) can only be inserted laterally for its coupling to the fixed upper part ( 2 ). 
     
     
         3 . The shoe sole according to  claim 1 , wherein the coupling system ( 4   a ,  4   b ) comprises an additional channel ( 4   a ′), and corresponding additional projection ( 4   b ′), at the front and at the rear of the sole with a circular shaped configuration. 
     
     
         4 . The shoe sole according to  claim 1 , wherein the coupling system ( 4   a ,  4   b ) is made up of a plurality of transversal channels ( 4   a ), and complementary projections ( 4   b ), with a circular section configuration which means that the lower part ( 3 ) can only be inserted laterally for its coupling to the fixed upper part ( 2 ). 
     
     
         5 . The shoe sole according to  claim 2 , wherein because the opposite sides of each of the parts ( 2 ,  3 ) of the sole ( 1 ) have a closed partition ( 5 ) such that, once these parts are coupled, the channels ( 4   a ) and projections ( 4   b ) of the coupling system are hidden and only a line of union between the two parts is visible. 
     
     
         6 . The shoe sole according to  claim 2 , wherein, additional external stops ( 6 ) are included which fit into holes ( 7 ) located in correspondence. 
     
     
         7 . The shoe sole according to  claim 1 , wherein it further comprises an intermediate part ( 8 ) which is removably coupled between the fixed upper part ( 2 ) and the interchangeable lower part ( 3 ). 
     
     
         8 . The shoe sole according to  claim 7 , wherein in that the intermediate part ( 8 ) is joined by means of a tongue and groove mechanical coupling system ( 4   a ,  4   b ) of which it is provided on its upper face and on its lower face to fit respectively with the coupling means of the lower face of the fixed upper part ( 2 ) and with the coupling means of the upper face of the interchangeable lower part ( 3 ).