Device for coupling strap and subordinate item

Abstract

A coupling device includes a plug member having a rectangular rail support part and a rectangular rail connected to an outer end of the rectangular rail support part; and a socket member having a rectangular rail groove into which the rectangular rail is fitted and a slot which is defined through a side wall of the socket member defining the rail groove to extend in a lengthwise direction of the rail groove so as to allow the rail support part to pass therethrough. Of both lengthwise ends of the socket member, one end is open to define an entrance through which the rectangular rail is fitted into the rail groove, and the other end is closed.

1 . A coupling device comprising:
 a plug member having a rectangular rail support part and a rectangular rail connected to an outer end of the rectangular rail support part; and   a socket member having a rectangular rail groove into which the rectangular rail is fitted and a slot which is defined through a side wall of the socket member defining the rail groove to extend in a lengthwise direction of the rail groove so as to allow the rail support part to pass therethrough,   wherein, of both lengthwise ends of the socket member, one end is open to define an entrance through which the rectangular rail is fitted into the rail groove, and the other end is closed.   
     
     
         2 . The coupling device according to  claim 1 , wherein the rail support part and the rail connected to the outer end of the rail support part cooperatively define a transverse sectional shape of a ‘T’, and the rail has a larger width than the rail support part when viewed in a transverse section. 
     
     
         3 . The coupling device according to  claim 1 , wherein a stopper is formed on a side surface of the rectangular rail adjacent to an upper end of the rail in such a way as to project outward, and an engagement groove is defined on a surface of the rail groove of the socket member through which the rectangular rail is fitted, to correspond to the stopper of the rail. 
     
     
         4 . The coupling device according to  claim 1 , wherein the rectangular rail and the rail groove of the socket member, through which the rail is fitted, have linear or curved configurations when viewed in a lengthwise direction thereof. 
     
     
         5 . The coupling device according to  claim 1 , wherein the plug member and the socket member are respectively coupled to first ends of objects, and cord connectors are formed on the objects such that the objects are connected with each other by a cord. 
     
     
         6 . The coupling device according to  claim 1 , wherein cord connectors are formed on first ends of the plug member and the socket member such that the plug member and the socket member are connected with each other by a cord. 
     
     
         7 . The coupling device according to  claim 1 , wherein the plug member or the socket member integrally projects from one end of a strap adjuster as an object to be connected. 
     
     
         8 . The coupling device according to  claim 7 , wherein the strap adjuster comprises a buckle for a knapsack or a carabiner. 
     
     
         9 . The coupling device according to  claim 1 , wherein a thin fastening plate extends rearward from the rail support part of the plug member and is stitched to an object to be stitched, and another object having the socket member is coupled to the rail of the plug member which is fastened through stitching. 
     
     
         10 . The coupling device according to  claim 9 , wherein the object to be stitched comprises a knapsack or a strap which is installed on a knapsack or a bag. 
     
     
         11 . The coupling device according to  claim 1 , wherein a thin fastening plate extends rearward from one surface of the socket member and is stitched to an object to be stitched, and another object having the plug member is coupled to the rail groove of the socket member which is fastened through stitching. 
     
     
         12 . The coupling device according to  claim 11 , wherein the object to be stitched comprises a knapsack or a strap which is installed on a knapsack or a bag.