Socket fastening-type reinforcing bar connector using binding end member

Abstract

The present invention relates to a socket fastening-type reinforcing bar connector using a binding end member and, more particularly, a reinforcing bar connector is disclosed wherein binding end members are bound to reinforcing bars, in order to facilitate processes for joining reinforcing bars, which are the foundation of reinforced concrete, and processes for joining between reinforcing bar cages, such that reinforcing bars having adjacent ends can be precisely connected mechanically through simple socket fastening.

1 . A socket-fastening-type reinforcing bar connector using a binding end member comprising:
 a first reinforcing bar and a second reinforcing bar abutting each other while having end portions facing each other;   a first binding end member bound to the end portion of the first reinforcing bar and having a male screw portion for coupling a fastening socket formed in the longitudinal direction at an outer surface thereof;   a second binding end member having one end portion formed of a shape corresponding to a shape of an end portion of the first binding end member and the other end portion bound to the end portion of the second reinforcing bar and spaced apart from the one end portion, and having one or a plurality of steps with one end portion in the axial direction forming any one angle selected from an acute angle, a right angle, and an obtuse angle with respect to the longitudinal direction; and   a hollow fastening socket opened in the longitudinal direction to extend in the longitudinal direction to surround and accommodate an outer surface of the second binding end member and an outer surface of the first binding end member, having a female screw portion for coupling a fastening socket that is helically coupled to the male screw portion for coupling a fastening socket of the first binding end member formed in the longitudinal direction at an inner surface thereof, locked to the one or the plurality of steps of the second binding end member, and having one or a plurality of locking steps forming any one angle selected from an acute angle, a right angle, and an obtuse angle with respect to the longitudinal direction,   wherein the fastening socket is moved forward toward the first binding end member and rotated in a fastening tightening screw direction such that locking steps of the fastening socket are tightly supported by the second binding end member to allow the first binding end member and the second binding end member to be integrally fastened by the fastening socket in order to mechanically join the first reinforcing bar and the second reinforcing bar,   a shape of the first binding end member bound to the end portion of the first reinforcing bar is a shape in which one end portion is a bar material shape having a width equal or similar to that of the first reinforcing bar and a transverse cross-sectional surface formed in a circular shape in order to have a structure joined to the first reinforcing bar and the other end portion is a bar material shape having a more extended width than the bar material shape of the one end portion and having the male screw portion for coupling a fastening socket formed at the extended outer surface to have a width that is a sum of an extended bar material shape of the second binding end member and a height of a screw thread in order to be a bar material shape extended by the width being stepped near the end portion in the longitudinal direction,   a shape of the second binding end member bound to the end portion of the second reinforcing bar is a shape in which one end portion is a bar material shape having a width equal or similar to that of the second reinforcing bar and a transverse cross-sectional surface formed in a circular shape in order to have a structure joined to the second reinforcing bar and the other end portion is a bar material shape having a more extended width than the bar material shape of the one end portion but being formed in a smaller width than an inner surface of the fastening socket to allow the fastening socket to move at an outer surface and having a step in a form of a protruding band that surrounds the outer surface to be extended by the width being stepped near the step,   the step in the form of a protruding band is in the shape of a protruding band surrounding from a portion near the bar material shape in which the width of the second binding end member is extended up to an end surface of the second binding end member or forms a shape of a protruding band that surrounds the portion near the bar material shape in which the width of the second binding end member is extended while having a shortened width,   the inner surface of the fastening socket is a cylindrical shape having a circumference to be rotatable in the fastening tightening screw direction while having the longitudinal direction as an axis in order to surround the bar material shape in which the width of the second binding end member is extended and be movably coupled to the outer surface of the second binding end member, and   a locking step protruding in a central direction in the shape of a protruding band is included at an opposite end portion of the female screw portion for coupling the fastening socket of the inner surface of the fastening socket to be locked to the one or the plurality of steps of the second binding end member, and the female screw portion for coupling the fastening socket is formed at a portion near the end portion in the first binding end member direction at the inner surface of the fastening socket such that the fastening socket formed to surround the bar material shape in which the width of the second binding end member is extended and the bar material shape in which the width of the first binding end member is extended is helically fastened to the male screw portion for coupling the fastening socket of the bar material shape in which the width of the first binding end member is extended and the locking step and the step in the shape of the protruding band tightly support each other at the same time to allow the end portion of the extended bar material shape of the first binding end member at which the male screw portion for coupling the fastening socket is formed and the end portion of the extended bar material shape of the second binding end member to be integrally coupled while supporting and facing each other.   
     
     
         2 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein, when adjustment of a joining length of the first reinforcing bar and the second reinforcing bar is required in any one case selected from a case in which a middle binding member is interposed between the first binding end member and the first reinforcing bar and a case in which the middle binding member is interposed between the second binding end member and the second reinforcing bar, the middle binding member is installable. 
     
     
         3 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein middle binding members are interposed between the first binding end member and the first reinforcing bar and between the second binding end member and the second reinforcing bar such that the middle binding members are installed in any case in which adjustment of the joining length of the first reinforcing bar and the second reinforcing bar is required. 
     
     
         4 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 2 , wherein the middle binding member is installable in any one case selected from:
 a case in which the middle binding member is interposed between the first binding end member and the first reinforcing bar such that one end portion of the middle binding member is bound to the end portion of the first reinforcing bar, a male screw portion for coupling the middle binding member is formed in a predetermined section from the one end portion to the other end portion, a middle binding member accommodation groove that accommodates the middle binding member is formed at an end portion of the first binding end member corresponding to the middle binding member, a female screw portion for coupling the middle binding member is formed at an inner surface of the accommodation groove, one or a plurality of lock nut bodies having a circular or polygonal cross-sectional shape are formed at the middle binding member such that a position of the middle binding member is lockable, and the end portion of the first binding end member corresponding to the middle binding member is formed as in one case selected from a case in which a transverse cross-sectional surface from the end portion surface up to a predetermined distance is formed in a circular shape, a case in which the transverse cross-sectional surface is formed in a polygonal shape, and a case in which one or more pairs of grip surfaces facing each other are formed; and   a case in which the middle binding member is interposed between the second binding end member and the second reinforcing bar such that the one end portion of the middle binding member is bound to the end portion of the second reinforcing bar, the male screw portion for coupling the middle binding member is formed in a predetermined section from the one end portion to the other end portion, the middle binding member accommodation groove that accommodates the middle binding member is formed at an end portion of the second binding end member corresponding to the middle binding member, the female screw portion for coupling the middle binding member is formed at the inner surface of the accommodation groove, the one or the plurality of lock nut bodies having a transverse cross-sectional surface formed in a circular or polygonal shape are formed at the middle binding member such that a position of the middle binding member is lockable, and the end portion of the second binding end member corresponding to the middle binding member is formed as in one case selected from a case in which a transverse cross-sectional surface from the end portion surface up to a predetermined distance is formed in a circular shape, a case in which the transverse cross-sectional surface is formed in a polygonal shape, and a case in which one or more pairs of grip surfaces facing each other are formed.   
     
     
         5 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 3 , wherein the middle binding member is installable in each of the cases by:
 the middle binding member in the first reinforcing bar direction having one end portion bound to the end portion of the first reinforcing bar, the male screw portion for coupling the middle binding member being formed in the predetermined section from the one end portion to the other end portion, a first middle binding member accommodation groove that accommodates the middle binding member being formed at the end portion of the first binding end member corresponding to the middle binding member, the female screw portion for coupling the middle binding member being formed at an inner surface of the accommodation groove, the one or the plurality of lock nut bodies having the transverse cross-sectional surface formed in a circular or polygonal shape being disposed at the middle binding member such that a position of the middle binding member is lockable, and the end portion of the first binding end member corresponding to the middle binding member being formed as in any one case selected from the case in which the transverse cross-sectional surface from the end portion surface up to a predetermined distance is formed in the circular shape, the case in which the transverse cross-sectional surface is formed in the polygonal shape, and the case in which the one or more pairs of grip surfaces facing each other are formed; and   the middle binding member in the second reinforcing bar direction having one end portion bound to the end portion of the second reinforcing bar, the male screw portion for coupling the middle binding member being formed in a predetermined section from the one end portion to the other end portion, a middle binding member accommodation groove that accommodates the middle binding member being formed at the end portion of the second binding end member corresponding to the middle binding member, the female screw portion for coupling the middle binding member being formed at the inner surface of the accommodation groove, the one or the plurality of lock nut bodies having a transverse cross-sectional surface formed in a circular or polygonal shape being formed at the middle binding member such that a position of the middle binding member is lockable, and the end portion of the second binding end member corresponding to the middle binding member being formed as in one case selected from the case in which the transverse cross-sectional surface from the end portion surface up to a predetermined distance is formed in the circular shape, the case in which the transverse cross-sectional surface is formed in the polygonal shape, and the case in which the one or more pairs of grip surfaces facing each other are formed.   
     
     
         6 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 2 , wherein the middle binding member is installable in any one case selected from:
 a case in which the middle binding member is bound to the end portion of the first reinforcing bar, the male screw portion for coupling the middle binding member is formed in the predetermined section from the one end portion to the other end portion of the middle binding member, a connection unit is formed at the other end portion of the first binding end member corresponding to the middle binding member, a male screw portion for coupling a connection socket is formed at the connection unit, the connection socket, which is a longitudinal member and a hollow body having one side and the other side opened, that connects the connection unit to the middle binding member is disposed, and a female screw portion helically coupled to the male screw portion for coupling the connection socket and the male screw portion for coupling the middle binding member is formed at an inner surface of the connection socket; and   a case in which the middle binding member is bound to the end portion of the second reinforcing bar, the male screw portion for coupling the middle binding member is formed in the predetermined section from the one end portion to the other end portion of the middle binding member, a connection unit is formed at the other end portion of the second binding end member corresponding to the middle binding member, a male screw portion for coupling a connection socket is formed at the connection unit, the connection socket, which is a longitudinal member and a hollow body having one side and the other side opened, that connects the connection unit to the middle binding member is disposed, and a female screw portion helically coupled to the male screw portion for coupling the connection socket and the male screw portion for coupling the middle binding member is formed at an inner surface of the connection socket.   
     
     
         7 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 3 , wherein the middle binding member is installable in each of the cases by:
 the middle binding member being bound to the end portion of the first reinforcing bar, the male screw portion for coupling the middle binding member being formed in the predetermined section from the one end portion to the other end portion of the middle binding member, a connection unit being formed at the other end portion of the first binding end member corresponding to the middle binding member, the male screw portion for coupling the connection socket being formed at the connection unit, the connection socket, which is a longitudinal member and a hollow body having one side and the other side opened, that connects the connection unit to the middle binding member being disposed, and the female screw portion helically coupled to the male screw portion for coupling the connection socket and the male screw portion for coupling the middle binding member being formed at an inner surface of the connection socket; and   the middle binding member being bound to the end portion of the second reinforcing bar, the male screw portion for coupling the middle binding member being formed in the predetermined section from the one end portion to the other end portion of the middle binding member, the connection unit being formed at the other end portion of the second binding end member corresponding to the middle binding member, the male screw portion for coupling the connection socket being formed at the connection unit, the connection socket, which is a longitudinal member and a hollow body having one side and the other side opened, that connects the connection unit to the middle binding member being disposed, and the female screw portion helically coupled to the male screw portion for coupling the connection socket and the male screw portion for coupling the middle binding member being formed at the inner surface of the connection socket.   
     
     
         8 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 6 , wherein, in formation of the connection socket, any one case selected from a case in which an outer surface is spline-processed, a case in which the outer surface is knurl-processed, a case in which a transverse cross-section is formed in a circular shape, a case in which the transverse cross-section is formed in a polygonal shape, and a case in which one or more pairs of grip surfaces facing each other are formed is adopted. 
     
     
         9 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein end portion shapes of the first binding end member and the second binding end member are any shapes selected from:
 a shape in which the end portion shape of the first binding end member is a protruding portion formed in the longitudinal direction and the end portion shape of the second binding end member is an accommodation unit formed in the same shape as the protruding portion to have the protruding portion fitted thereto; and   a shape in which the end portion shape of the second binding end member is a protruding portion formed in the longitudinal direction and the end portion shape of the first binding end member is an accommodation unit formed in the same shape as the protruding portion to have the protruding portion fitted thereto, and   the end portion shapes of the first binding end member and the second binding end member are exchangeable with each other.   
     
     
         10 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein the end portion shapes of the first binding end member and the second binding end member are any shapes selected from:
 a shape in which the end portion shape of the first binding end member is any one selected from a cone, a truncated cone, a rounded cone, a cylinder, a polygonal pyramid, a truncated polygonal pyramid, a rounded polygonal pyramid, a polygonal column, a cut spherical shape, and a cut elliptical-spherical shape protruding from the center in the longitudinal direction, and a flat surface and an embossed surface perpendicular to the longitudinal direction, and the end portion shape of the second binding end member is an accommodation unit of the end portion shape of the first binding end member that is formed in the same shape as the end portion shape of the first binding end member; and   a shape in which the end portion shape of the second binding end member is any one selected from a cone, a truncated cone, a rounded cone, a cylinder, a polygonal pyramid, a truncated polygonal pyramid, a rounded polygonal pyramid, a polygonal column, a cut spherical shape, and a cut elliptical-spherical shape protruding from the center in the longitudinal direction, and a flat surface and an embossed surface perpendicular to the longitudinal direction, and the end portion shape of the first binding end member is an accommodation unit of the end portion shape of the second binding end member that is formed in the same shape as the end portion shape of the second binding end member, and   the end portion shapes of the first binding end member and the second binding end member are exchangeable with each other.   
     
     
         11 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein the end portion shapes of the first binding end member and the second binding end member are any shapes selected from:
 a shape in which the end portion shape of the first binding end member is a multi-step inclined type protruding portion having one or a plurality of sections in which a surface area gradually decreases and sections in which a surface area is constant in the longitudinal direction and the end portion shape of the second binding end member is an accommodation unit formed in a shape corresponding to the protruding portion; and   a shape in which the end portion shape of the second binding end member is a multi-step inclined type protruding portion having one or a plurality of sections in which a surface area gradually decreases and sections in which a surface area is constant in the longitudinal direction and the end portion shape of the first binding end member is an accommodation unit formed in a shape corresponding to the protruding portion, and   the end portion shapes of the first binding end member and the second binding end member are exchangeable with each other.   
     
     
         12 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 10 , wherein the embossed surface is formed of:
 a convex portion having one or a plurality of any one selected from a longitudinal cross-sectional surface formed in a triangular shape, a triangular shape with a round vertex, a quadrangular shape, a quadrangular shape with a round edge angle, a cut spherical shape, a cut elliptical-spherical shape, a cross shape formed at an end portion surface, a shape in which a cross shape and a circular shape are combined, and a corrugated shape curved in a wave form, all of which are equidistant from the center of the end portion surface; and   a concave portion formed in a shape accommodating the convex portion.   
     
     
         13 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 10 ,
 wherein a longitudinal cross-section of any one selected from the end portion shapes of the first binding end member and the second binding end member forming a cone, a truncated cone, a rounded cone, a cylinder, a polygonal pyramid, a truncated polygonal pyramid, a rounded polygonal pyramid, a polygonal column, a cut spherical shape, and a cut elliptical-spherical shape is formed to form multiple stages; and   an angle formed by the multiple stages is any one angle selected from an acute angle, a right angle, and an obtuse angle.   
     
     
         14 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 ,
 wherein the locking steps and the steps are disposed in a plurality and formed in multiple stages to distribute stress caused by a tensile force concentrated to the fastening socket; and   an angle formed by the locking steps and the steps is any one angle selected from an acute angle, a right angle, and an obtuse angle.   
     
     
         15 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein the sizes of the first reinforcing bar and the second reinforcing bar are different. 
     
     
         16 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein, in formation of the fastening socket, any one case selected from a case in which an outer surface is spline-processed, a case in which the outer surface is knurl-processed, a case in which a transverse cross-section is formed in a circular shape, a case in which the transverse cross-section is formed in a polygonal shape, and a case in which one or more pairs of grip surfaces facing each other are formed is adopted. 
     
     
         17 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein joining of adjacent bar materials having end portions facing each other is possible by any one case selected from:
 a case in which the first binding end member and the second binding end member are respectively bound to the end portions of the bar materials;   a case in which the first binding end member and the middle binding member are respectively bound to one side and the other side of the end portions of the bar materials; and   a case in which the second binding end member and the middle binding member are respectively bound to one side and the other side of the end portions of the bar materials.   
     
     
         18 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 ,
 wherein at least one selected from the male screw portion for coupling the fastening socket, the female screw portion for coupling the fastening socket, the male screw portion for coupling the middle binding member, the female screw portion for coupling the middle binding member, a female screw portion for coupling the threaded joint type reinforcing bar, the female screw portion for coupling the reinforcing bar in which a male screw portion is formed at an end portion, the male screw portion for connecting the connection socket, and the female screw portion at the inner surface of the connection socket is formed with one or more screw threads;   a form of a screw is any one form selected from a triangular screw, a quadrangular screw, an elliptical screw, and a round screw; and   a class of a screw is any one selected from first class, second class, and third class.   
     
     
         19 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein binding between the first reinforcing bar and the first binding end member, binding between the second reinforcing bar and the second binding end member, binding between the first reinforcing bar and the middle binding member, and binding between the second reinforcing bar and the middle binding member are performed by welding. 
     
     
         20 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein the binding between the first reinforcing bar and the first binding end member, the binding between the second reinforcing bar and the second binding end member, the binding between the first reinforcing bar and the middle binding member, and the binding between the second reinforcing bar and the middle binding member are performed by any one selected from friction welding, linear friction welding, arc stud welding method, butt welding, ultrasonic vibration welding, resistance welding, plasma welding, electronic beam welding, laser welding, high-frequency welding, and argon welding. 
     
     
         21 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 20 , wherein, when the binding is performed by the arc stud welding method, an ignition tip is inserted and installed at a center of an end portion surface of the first binding end member or the second binding end member to be welded. 
     
     
         22 . The socket-fastening-type reinforcing bar connector using a binding end member according to  claim 1 , wherein a protective cap for protecting screw threads covers at least one selected from the male screw portion for coupling the fastening socket, the female screw portion for coupling the fastening socket, the male screw portion for coupling the middle binding member, the female screw portion for coupling the middle binding member, the female screw portion for coupling the threaded joint type reinforcing bar, the female screw portion for coupling the reinforcing bar in which the male screw portion is formed at the end portion, the male screw portion for connecting the connection socket, and the female screw portion at the inner surface of the connection socket.