Sole structure of sport shoe with shoe studs and manufacturing method thereof

Abstract

A sole structure of a sport shoe with shoe studs includes: inner cleat elements separated from each other and made of a first elastic material; an outsole layer including outsole holes through which the inner cleat elements pass, and hole surfaces of the outsole holes connecting with top portions of the inner cleat elements; and outer cleat elements, formed on and surrounding or being surrounded by the inner cleat elements, separated from each other and from the outsole layer, made of a second elastic material. Each of the inner cleat elements and the outer cleat element formed thereon together form the shoe stud. In the shoe stud, the inner cleat element is visible from a gap between the outer cleat element and the outsole layer. Elasticity of the first elastic material is higher than elasticity of the second elastic material.

1 . A sole structure of a sport shoe with shoe studs, comprising:
 inner cleat elements, separated from each other and made of a first elastic material;   an outsole layer, comprising outsole holes through which the inner cleat elements pass, and hole surfaces of the outsole holes connecting with top portions of the inner cleat elements; and   outer cleat elements, formed on and surrounding or being surrounded by the inner cleat elements, separated from each other and from the outsole layer, and made of a second elastic material;   wherein:   each of the inner cleat elements and the outer cleat element formed thereon together form the shoe stud;   in the shoe stud, the inner cleat element is visible from a gap between the outer cleat element and the outsole layer; and   elasticity of the first elastic material is higher than elasticity of the second elastic material.   
     
     
         2 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein at least one of the outer cleat elements comprises a cleat opening from which the inner cleat element of the shoe stud is visible and is contactable to the ground. 
     
     
         3 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the inner cleat element in the shoe stud comprises a side surface with a step-shaped structure. 
     
     
         4 . The sole structure of the sport shoe with the shoe studs according to  claim 3 , wherein the step-shaped structure of the inner cleat element comprises a top step far from the ground, and at least one lower step connected to the top step and being close to the ground; and the top step is visible from the gap between the outsole layer and the outer cleat element in the shoe stud. 
     
     
         5 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the inner cleat element tapers from a top end of the inner cleat element far from the ground, to a bottom end of the inner cleat element close to the ground, and the outer cleat element tapers from a top end of the outer cleat element far from the ground, to a bottom end of the outer cleat element close to the ground. 
     
     
         6 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the outer cleat element fits in the inner cleat element, a step-shaped structure is formed in a connection interface between the inner cleat element and the outer cleat element, and the outer cleat element formed on and surrounded by the inner cleat element tapers from a bottom end of the outer cleat element close to the ground, to a top end of the outer cleat element far from the ground. 
     
     
         7 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the inner cleat element in the shoe stud comprises a side surface comprising a ring supporting surface visible from the gap between the outer cleat element and the outsole layer, the outer cleat element in the shoe stud comprises a contacting surface for contacting the ground, and an outer side surface connected to and not parallel to the contacting surface, and a lower edge of the ring supporting surface of the inner cleat element close to the ground is aligned with an upper edge of the outer side surface of the outer cleat element far from the ground. 
     
     
         8 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein a top end of the outer cleat element far from the ground protrudes from a top portion of the inner cleat element in an axis vertical to a central axis of the shoe stud. 
     
     
         9 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the outer cleat element comprises a contacting surface for contacting the ground, and an outer side surface connected to and not parallel to the contacting surface, an intermediate portion of the outer side surface of the outer cleat element protrudes from two opposite ends of the outer side surface of the outer cleat element in an axis vertical to a central axis of the shoe stud, and the intermediate portion of the outer side surface of the outer cleat element is located between the two opposite ends of the outer side surface of the outer cleat element. 
     
     
         10 . The sole structure of the sport shoe with the shoe studs according to  claim 8 , wherein the outer side surface of the outer cleat element has a regular concave-convex pattern. 
     
     
         11 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the inner cleat element in the shoe stud comprises a first taper portion far from the ground, a second taper portion for contacting the ground, and a third taper portion located between the first taper portion and the second taper portion, the first taper portion is tapered from a top end far from the ground, to a bottom end close to the ground, the second taper portion is tapered from a top end far from the ground, to a bottom end close to the ground, the third taper portion is tapered from a bottom end close to the ground, to a top end far from the ground, the top and bottom ends of the third taper portion are respectively connected to the bottom end of the first taper portion and the top end of the second taper portion, and a part of the first taper portion is visible from the gap between the outer cleat element and the outsole layer in the shoe stud. 
     
     
         12 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the outer cleat element in the shoe stud comprises a taper portion far from the ground, and a contacting portion connected to the taper portion and configured to contact the ground, and the taper portion is tapered from a top end far from the ground, to a bottom end close to the ground. 
     
     
         13 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the outer cleat element in the shoe stud comprises a contacting surface for contacting the ground, a recess is formed on the contacting surface, and a cleat opening of the outer cleat element is formed at the recess; and
 the inner cleat element comprises a contacting surface for contacting the ground, and a side surface connected to and not parallel to the contacting surface, and a ring side surface of the recess faces and surrounds the side surface of the inner cleat element.   
     
     
         14 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the inner cleat element in the shoe stud comprises a first contacting surface for contacting the ground, the outer cleat element in the shoe stud comprises a second contacting surface for contacting the ground, and the first contacting surface of the inner cleat element is aligned with or protrudes from and is surrounded by the second contacting surface of the outer cleat element in the shoe stud. 
     
     
         15 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein the inner cleat element comprises a side surface, the outer cleat element comprises an inner side surface for facing and connecting to the side surface of the inner cleat element, and no gap exists between the side surface of the inner cleat element and the inner side surface of the outer cleat element in the shoe stud. 
     
     
         16 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein a bottom end of the inner cleat element close to the ground has a smaller projection in a central axis of the shoe stud than a top end of the inner cleat element far from the ground, and a bottom end of the outer cleat element close to the ground has a smaller projection in the central axis of the shoe stud than a top end of the outer cleat element far from the ground. 
     
     
         17 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein outline or shape of the inner or outer cleat element of at least one of the shoe studs on the sole structure is asymmetrical. 
     
     
         18 . The sole structure of the sport shoe with the shoe studs according to  claim 1 , wherein outline or shape of the inner or outer cleat element of at least one of the shoe studs on the sole structure is symmetrical. 
     
     
         19 . A sport shoe having the sole structure according to  claim 1 . 
     
     
         20 . A manufacturing method of the sole structure of the sport shoe with the shoe studs according to  claim 1 , comprising the following steps:
 (A) forming the inner cleat elements on a bottom portion of the sport shoe; and   (B) forming the outer cleat elements on the inner cleat elements while simultaneously forming the outsole layer on the bottom portion.