Check valve plate for shoes

Abstract

The present invention relates to a check valve plate for shoes, comprising: a porous valve plate, which is stacked on the upper surface of a shoe sole having receiving grooves therein and thereby closes the receiving grooves, and which has elasticity; and multiple valves, which are formed inside the porous valve plate and are selectively opened/closed according to air pressure, and which are formed so as not to deviate from the thickness (t) of the porous valve plate.

1 . A check valve plate for shoes, comprising:
 a porous valve plate which is stacked on the upper surface of a shoe sole having receiving grooves  1   a  formed therein, and thereby closes the receiving grooves, and which has elasticity;   a plurality of valves which are formed inside the porous valve plate and are selectively opened/closed according to air pressure, and are formed so as not to deviate from a thickness of the porous valve plate, and   wherein the valves are formed inside the porous valve plate having the predetermined thickness, and the lower portions of the valves do not protrude downwardly from the porous valve plate, such that the thickness of the porous valve plate having the valves formed therein can be minimized and the porous valve plate can be easily applied to and used in shoes of soles having a small thickness.   
     
     
         2 . The check valve plate for shoes of  claim 1 , further comprising:
 first annular tension grooves which are formed to be spaced apart from the circumferences of the valves toward the outside on the upper surface of the porous valve plate;   second annular tension grooves which are formed to be spaced apart from the first tension grooves toward the outside on the lower surface of the porous valve plate; and   annular locking protrusions which extend downwardly from the lower portion of the porous valve plate having the valves formed therein, and   wherein, when the porous valve plate is exposed to an external force, the external force transmitted to the valves is absorbed and removed by the tension grooves and, such that the valves formed in the porous valve plate are prevented from having their shapes deformed by the external force.   
     
     
         3 . The check valve plate for shoes of  claim 1 , further comprising shape deformation prevention grooves which are formed along the outer circumference of the porous valve plate, and are formed on the upper surfaces of the circumferences of the valves.