WO2022050463A1

WO2022050463A1 - One-touch rebar coupler

Info

Publication number: WO2022050463A1
Application number: PCT/KR2020/012014
Authority: WO
Inventors: 이양운
Original assignee: 이양운
Priority date: 2020-09-03
Filing date: 2020-09-07
Publication date: 2022-03-10

Abstract

The present invention relates to a one-touch rebar coupler and, more specifically, to a one-touch rebar coupler wherein in a state where an end part of the rebar is received in a coupler body including a first coupling member and a second coupling member, a first and a second external coupler coupled to the first and the second coupling member are made to firmly hold the rebar, and then the first and the second coupling member are coupled to each other such that both ends of each of the first and the second coupling member are in contact with each other, so that the coupling angle of the coupler can be stably adjusted as necessary. A coupler and a rebar can be coupled to each other in a one-touch manner to facilitate construction and thus reduce the construction period.

Description

One-touch rebar coupler

The present invention relates to a one-touch reinforcing bar coupler, and more particularly, to a coupler capable of maintaining a solidly coupled state even with impacts applied from multiple directions.

In general, concrete is a composite composition in which cement, sand, gravel, water, etc. are mixed in a suitable ratio, and has a relatively high compressive strength, but a very low tensile strength compared to the compressive strength, which is prone to cracking. In order to reinforce the strength of concrete (complementing tensile strength), reinforcing bars are bound (reinforced) in the form in which the concrete is poured.

Since reinforcing bars are produced as standard products of a certain length, reinforcing bars are connected to each other according to the length of the structure. Butt joints and overlap joints are used. For butt joints, NC couplers and welding joints are mainly used. The joint method has been used. Among the butt joint methods, the weld joint has problems such as structural difficulties, reduced productivity, and broken welds as reinforcing bars are welded one by one at the construction site. In addition, the overlap joint is a method of tying reinforcing bars and reinforcing bars. During on-site construction, each rebar is individually tied and fixed, and construction efficiency is low. There is a problem that there is no seismic effect, such as falling out.

In order to solve the problems of the conventional rebar couplers, rebar couplers having various structures have been developed. According to Korean Patent Publication No. 10-2018-0020533, as shown in FIG. 1, the coupler 10' and the fixing force while pressing one end of the reinforcing bar 1' positioned at both ends of the coupler 10' A plurality of fixed chucks 20' and a plurality of fixed chucks 20' exhibiting are composed of an intermittent ring 30' that supports to be stably positioned at one end of the reinforcing bar 1', and the coupler and the fixed chuck are fastened Depending on the depth, the compressive force acting on the fixed chuck affects the reinforcing bars so that the firm connection of the rebars is maintained. However, in the prior art, when connecting reinforcing bars at the work site, a plurality of fixed chucks are aligned to one end of the reinforcing bars so as not to be twisted, and the fixed chuck with the intermittent ring coupled to the coupler must be inserted into the coupler while paying attention to the distortion of the fixed chuck. A lot of precise manual work is required. In addition, as the coupling angle of the coupler has a fixed structure, the movement of the reinforcing bar with the coupler is difficult to move. There is a problem that increases the time. Therefore, there is a need for a reinforcing bar coupler that has a seismic effect and a simple coupling structure, so that it is easy to construct and, if necessary, can adjust the coupling angle of the reinforcing bars connected by the coupler, thereby increasing the construction efficiency.

The present invention is to solve the above problems, the first coupling member coupled to the first and second coupling members in a state in which the distal end of the reinforcing bar is accommodated in a coupler body composed of a first coupling member and a second coupling member , 2 The coupling angle of the coupler can be stably adjusted as needed by coupling the first and second coupling members so that both ends of the first and second coupling members are in contact with each other after the external coupler firmly grips the reinforcing bar, and the coupling between the coupler and the reinforcing bar is one-touch It is an object of the invention to provide a one-touch rebar coupler that can be easily constructed in this way and can reduce the construction period.

Furthermore, to provide a one-touch reinforcing bar coupler that can maintain a solid connection even with shocks applied from multiple directions due to earthquakes by fastening the main body to the coupling part where a pair of couplers are coupled in the direction perpendicular to the coupling direction between the pair of couplers. but it has a purpose.

In order to achieve the above object, the present invention provides a first coupling member and a second coupling member, including a first coupling member, a second coupling member, and a coupling piece for mutually coupling the first coupling member and the second coupling member. A coupler body in which the connection angle between the coupling members can be varied; and a first hollow having a first tapered portion coupled to one end of the first coupling member and gradually increasing in diameter from the side of the insertion hole on which the reinforcing bar is inserted. A first external coupler having an additional portion; And, a second external coupler coupled to one end of the second coupling member and formed with a second hollow part having a second taper part whose diameter gradually increases from the insertion hole side of one side into which the reinforcing bar is inserted; And , A first tightening unit having first jaws having a third tapered portion corresponding to the first tapered portion formed on the outer circumferential surface, and first protrusions formed on the inner circumferential surface of the first reinforcing bar in close contact with the outer circumferential surface of the first reinforcing bar to grip the first reinforcing bar; and , a second tightening unit having a third tapered portion corresponding to the second tapered portion formed on the outer circumferential surface, and having second jaws formed on the inner circumferential surface of the second reinforcing bar in close contact with the outer circumferential surface of the second reinforcing bar to grip the second reinforcing bar; and , a first base and a second base each accommodated inside the first tightening unit and the second tightening unit; and provided between one end of the first tightening unit 120 and the first coupling member 210, the first A first spring for elastically moving the tightening unit 120 to the first tapered part 111 of the first hollow part 110; and one end of the second tightening unit 140 and the second coupling member 220 A second spring provided between the parts to elastically move the second tightening unit 140 to the second tapered part 112 of the second hollow part 110; is configured to include.

The first coupling member 210 is formed to protrude from one end of the first coupling member 210 in the longitudinal direction, and a first coupling protrusion introduced into the first external coupler first hollow part 110; and A first reinforcing bar insertion groove concavely formed so that the distal end of the reinforcing bar can be inserted is formed on the end face of the first coupling protrusion. In addition, the second coupling member 220 is formed to protrude along the longitudinal direction from one end of the second coupling member 220, the second coupling protrusion introduced into the second hollow portion 110 of the second external coupler; And, a second reinforcing bar insertion groove concavely formed so that the distal end of the reinforcing bar can be inserted from the end surface of the second coupling protrusion; is formed.

The first hollow portion 110 of the first external coupler 100 is formed in one insertion hole, is connected to one end of the first tapered portion 111 , and has a cylindrical inner diameter that matches the outer diameter of the first reinforcing bar 11 . The first space portion of the upper portion; and a second cylindrical shape formed in the coupling hole formed in the opposite direction to the insertion hole on one side, connected to the other end of the first tapered portion 111, and having an inner diameter coincident with the outer diameter of the first coupling protrusion space; includes.

The second hollow portion of the second external coupler is formed in one side insertion hole and connected to one end of the second tapered portion, and a cylindrical third space portion having an inner diameter coincident with the outer diameter of the second reinforcing bar; And, in the opposite direction to the one side insertion hole It includes a; is formed in the coupling hole formed in the second tapered portion is connected to the other end, the cylindrical fourth space having an inner diameter that coincides with the outer diameter of the second coupling protrusion.

The first spring is accommodated in the second space, and the second spring is accommodated in the fourth space.

A screw thread is formed on the inner circumferential surface of the second space portion and the fourth space portion, respectively, and a screw thread of the second space portion and a screw thread corresponding to the screw thread of the fourth space portion are formed on the outer circumferential surface of the first coupling protrusion and the outer circumferential surface of the second coupling protrusion; These are respectively formed, the first external coupler is screwed to the first coupling member, and the second external coupler is screwed to the second coupling member.

The first tightening unit is inserted into the first tapered portion of the first hollow portion through the second space portion to grip the first reinforcing bar, and has a structure in which a first cut-out portion is formed in the longitudinal direction between the plurality of first jaws. Accordingly, when the first tightening unit is moved toward the first tapered portion through the second space portion, the interval of the first incision is contracted so that the inner circumferential surface of the first tightening unit is in close contact along the outer circumferential surface of the first reinforcing bar. In addition, the second tightening unit is inserted into the second tapered portion of the second hollow portion through the fourth space portion to grip the second reinforcing bar, and a second cut-out portion in the longitudinal direction between the plurality of second jaws; Accordingly, when the second tightening unit moves toward the second tapered portion through the fourth space, the interval between the second incisions is contracted so that the inner circumferential surface of the second tightening unit is in close contact along the outer circumferential surface of the second reinforcing bar.

As the distal end of the first reinforcing bar presses the first base, the first base is separated from the inside of the first tightening unit, and then the separated first base passes through the inside of the first spring and enters the first rebar insertion groove, The first spring is provided to surround the first reinforcing bar in a contracted state, and the first tightening unit is pressed by the first spring so that the third taper part is in close contact with the first tapered part, and at the same time, the first tightening unit closes the first reinforcing bar. grip and fix In addition, as the distal end of the second reinforcing bar presses the second base, the second base is separated from the inside of the second tightening unit, and then the separated second base passes through the inside of the second spring and enters the second reinforcing bar insertion groove. , the second spring is provided to surround the second reinforcing bar in a contracted state, and the second tightening unit is pressed by the second spring so that the fourth tapered part is in close contact with the second tapered part, and at the same time, the second tightening unit is connected to the second Grasp the reinforcing bar and fix it.

As the first base is formed in a shape corresponding to the inner circumferential surface of the first tightening unit, a locking projection engaged with the cutout between the first jaws is formed on the outer circumferential surface of the first base, and the second base is the inner circumferential surface of the second tightening unit. As it is formed in a shape corresponding to the, a locking protrusion engaged with the cutout between the second jaws is formed on the outer peripheral surface of the second base.

According to an embodiment of the present invention, the first cut-out portion of the first tightening unit is formed to extend from one side of the plurality of first jaws provided on the insertion port side toward the other side of the plurality of first jaws, the plurality of first jaws is the other end Doedoe interconnected, the second cut-out of the second tightening unit is formed to extend from one side of the plurality of second jaws provided on the insertion port side toward the other side of the plurality of second jaws, and the other end of the plurality of second jaws is interconnected do.

According to another embodiment of the present invention, the first cut-out of the first tightening unit is formed to extend from one end of the plurality of first jaws provided on the insertion port side to the other end of the plurality of first jaws, and the plurality of first jaws are cut Doedoe provided to be separated from each other, the first tightening unit has a first outer groove recessed in a ring shape from the outer peripheral surface of the other end of the plurality of first jaws; and a ring shape corresponding to the first outer groove, 1 The first guide holder is fitted into the outer groove so that the plurality of first jaws are not easily separated from the first reinforcing bar; it further includes. In addition, the second cut-out portion of the second tightening unit is formed to extend from one end of the plurality of second jaws provided on the insertion port side to the other end of the plurality of second jaws, so that the plurality of second jaws are provided to be separated from each other by the cut-out portion. , The second tightening unit has a plurality of two-jaw second outer grooves recessed in a ring shape from the outer circumferential surface of the other end; and has a ring shape corresponding to the second outer groove, and is fitted into the second outer groove to form a plurality of two jaws It further includes; a second guide holder to prevent easy separation from the second reinforcing bar.

According to the embodiment, the first and second reinforcing bar insertion grooves include female screws formed along the inner circumferential surface, and male screws having a shape corresponding to the female screws are formed on the outer circumferential surface of the distal end of the reinforcing bar inserted into the reinforcing bar coupling groove.

The coupling piece includes a first coupling module formed at the other end of the first coupling member and a second coupling module formed at the other end of the second coupling member, wherein the first coupling module and the second coupling module are positioned to face each other is coupled in a state in which the first and second coupling members and the first and second reinforcing bars are in the x-axis direction, the coupling direction of the first coupling member and the second coupling member is the y-axis direction, and the first and second coupling members are in the y-axis direction. When the width direction of the coupling member and the first and second reinforcing bars is in the z-axis direction, the first coupling module includes a first coupling surface provided to face one y-axis direction, and the second coupling module includes a first coupling surface It is provided to face the opposite direction and includes a second coupling surface having a shape complementary to the coupling surface of the first coupling module, and when a virtual central axis is drawn in the y-axis direction on the first coupling surface and the second coupling surface, In a state in which the first coupling member and the second coupling member are aligned so that the virtual central axis coincides with each other, the first coupling member or the second coupling member is moved in the y-axis direction to form the first coupling surface and the second coupling member. Join so that the mating surfaces are in contact with each other. The first coupling surface is formed to have a predetermined width and depth based on an imaginary center line, and a plurality of first protruding protrusions repeatedly formed at regular intervals along a circumferential direction of a concave groove having a circular cross section and a circular edge portion of the concave groove. Including, the second coupling surface is formed to have a predetermined width and height based on the virtual center line, a plurality of second protrusions having a circular cross-section and a plurality of second portions repeatedly formed at regular intervals along the circumferential direction of the circular edge of the protrusion It includes a protrusion, and the first protrusion has a shape that is complementary to the width of the first protrusion and the first protrusion as the distance between the first protrusion and the first protrusion increases, and the second protrusion has a shape complementary to the first protrusion. When formed and the first coupling module and the second coupling module are fastened, the protrusion of the second coupling surface is accommodated in the concave groove of the first coupling surface, the first protruding protrusion is engaged with the second protruding protrusion, and the first protruding protrusion and the second protruding protrusion The coupling angle of the coupling piece may have various angles due to the structure of the protrusion.

The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

According to the present invention, the first and second external couplers coupled to the first and second coupling members in a state in which the distal end of the reinforcing bar is accommodated in the coupler body composed of the first coupling member and the second coupling member in a one-touch manner It is possible to provide a structure of a rebar coupler suitable for seismic design by simplifying the joint work of reinforcing bars by making it firmly grip the reinforcing bars and improving the binding force by connecting reinforcing bars firmly. It works.

1 is a perspective view showing a structure of the prior art.

Figure 2 is an exploded perspective view showing in detail the shape of the one-touch reinforcing bar coupler of the present invention.

3 is a side view and a cross-sectional view showing in detail the insertion state of the first and second external couplers and the first and second coupling members of the present invention.

Figure 4 is a side view showing in detail the first coupling member and the second coupling member of the present invention.

5 is a side view showing a state in which the first and second tapered portions are accommodated in the first and second external couplers of the present invention.

6 is a perspective view showing in detail the coupling structure of the first and second tightening units and the first and second bases according to another embodiment of the present invention.

7 is an exploded perspective view showing in detail the shape of the one-touch reinforcing bar coupler according to another embodiment of the present invention.

8 is a plan view and a side view showing in detail the first coupling member and the second coupling member of the one-touch reinforcing bar coupler of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

In addition, the following examples do not limit the scope of the present invention, but are merely exemplary of the components presented in the claims of the present invention, and are included in the technical spirit throughout the specification of the present invention and constitute the scope of the claims Embodiments including substitutable elements as equivalents in elements may be included in the scope of the present invention.

Referring to FIG. 2 , a first coupling member 210 , a second coupling member 220 , and a coupling piece 300 for mutually coupling the first coupling member 210 and the second coupling member 220 . A coupler body 20 in which the connection angle between the first coupling member 210 and the second coupling member 220 can be varied, including; and the first coupling member 210 coupled to one end side. The first external coupler 100; and the second external coupler 160 coupled to one end side of the second coupling member 220; and the first reinforcing bar 11 in close contact with the outer circumferential surface of the first reinforcing bar 11 A first tightening unit 120 having first jaws 121 for gripping; And, a second tightening unit 140 having second jaws 141 in close contact with the outer peripheral surface of the second reinforcing bar 12; And, the first tightening unit 120 and the second tightening unit 140, respectively accommodated inside the first base 122 and the second base 142; And, the first tightening unit 120 and the first coupling A first spring 130 provided between one end of the member 210 to elastically move the first tightening unit 120 to the first tapered part 111 of the first hollow part 110; and the second It is provided between one end of the tightening unit 140 and the second coupling member 220 to elastically move the second tightening unit 140 to the second tapered part 171 of the second hollow part 170 . 2 springs 150; is configured to include. According to the described structure, the first and second coupling members are coupled to the first and second coupling members in a state in which the distal ends of the first and second reinforcing bars are accommodated in the coupler body composed of the first coupling member and the second coupling member in a one-touch manner, respectively. The first and second external couplers may firmly grip the first and second reinforcing bars.

Figure 3 (a) is a side view showing the insertion state of the first and second external couplers and the first and second coupling members, Figure 3 (b) is a sectional view taken along line B-B' of Figure 3 (a). it will be shown

3 (a) to 3 (b), the first external coupler 100 is a first tapered portion ( The first hollow part 110 having 111) is formed. In addition, the second external coupler 160 is formed with a second hollow portion 170 having a second tapered portion 171 whose diameter is gradually increased from the side of the insertion hole of one side into which the second reinforcing bar 12 is inserted.

The first tightening unit 120 has a third tapered portion 121a corresponding to the first tapered portion 111 is formed on the outer circumferential surface, and the first reinforcing bar 11 is in close contact with the outer circumferential surface of the first reinforcing bar 11 on the inner circumferential surface. A first protrusion (121b) for holding the is formed. In addition, the second tightening unit 140 has a fourth tapered portion 141a corresponding to the second tapered portion 171 formed on the outer circumferential surface, and is in close contact with the outer circumferential surface of the second reinforcing bar 12 on the inner circumferential surface of the second reinforcing bar ( 12) is formed with a second protrusion 141b for holding it.

Referring to FIG. 4 , the first coupling member 210 is formed to protrude from one end of the first coupling member 210 in the longitudinal direction, and is introduced into the first hollow part 110 of the first external coupler. The coupling protrusion 211; and the first reinforcing bar insertion groove 212 concavely formed so that the distal end of the first reinforcing bar 11 can be inserted from the end surface of the first coupling protrusion 211 is formed. In addition, the second coupling member 220 is formed to protrude along the longitudinal direction from one end of the second coupling member 220 , and a second coupling protrusion 221 introduced into the second outer second coupler hollow part 110 . ); and a second reinforcing bar insertion groove 222 concavely formed so that the distal end of the second reinforcing bar 12 can be inserted from the end surface of the second coupling protrusion 221; is formed.

Referring to FIG. 5 , the first and second hollow portions 110 and 170 of the first and second

external couplers

100 and 160 according to the embodiment of the present invention are formed in one side insertion hole, and the first and second tapered portions 111 and 171 are at one end. It is connected to, and is formed in the first and third cylindrical spaces (112, 172) having an inner diameter that matches the outer diameter of the first and second reinforcing bars (11, 12); The first and second tapered portions 111 and 171 are connected to the other ends, and cylindrical second and fourth space portions 113 and 173 having an inner diameter matching the outer diameter of the first and

second coupling protrusions

211 and 221 are included. In addition, the first and

second springs

130 and 150 are provided to be accommodated in the second and fourth space portions 113 and 173 .

According to the embodiment, a screw thread (not shown) is formed on the inner circumferential surface of the second space 113 and the fourth space 173 , respectively, and the outer circumferential surface of the first coupling protrusion 211 and the second coupling protrusion 221 . ) on the outer circumferential surface of the second space 113 , and a screw groove (not shown) corresponding to the screw thread of the fourth space 173 , respectively, are formed in the first coupling member 210 . The external coupler 100 is screwed, and the second external coupler 160 is screwed to the second coupling member 220 .

The first tightening unit 120 is inserted into the first tapered portion 111 of the first hollow portion 110 through the second space portion 113 to grip the first reinforcing bar 11, and a plurality of first jaws (121) between the first cut-out portion (121c) in the longitudinal direction; has a structure in which is formed, the first tightening unit is moved toward the first tapered portion 111 through the second space portion 113. In this case, the interval of the first cut-out portion 121c is contracted so that the inner circumferential surface of the first tightening unit 120 is in close contact along the outer circumferential surface of the first reinforcing bar 11 . In addition, the second tightening unit 140 is inserted into the second tapered portion 171 of the second hollow portion 170 through the fourth space portion 173 to grip the second reinforcing bar 12, and As it has a structure in which a second cut-out portion 141c is formed between the two jaws 141 in the longitudinal direction, the second tightening unit moves toward the second tapered portion 171 through the fourth space portion 173. When moved, the interval of the second cut-out portion 141c is contracted, so that the inner circumferential surface of the second tightening unit 140 is in close contact along the outer circumferential surface of the second reinforcing bar 12 .

In more detail, as shown in (b) of FIG. 5 , the distal end of the first reinforcing bar 11 presses the first base 122 so that the first base 122 is the first tightening unit 120 . As the separated first base 122 passes through the inside of the first spring 130 and enters the first reinforcing bar insertion groove 212, the first spring 130 is released in a contracted state. It is provided to surround the first reinforcing bar 11, and the first tightening unit 120 is pressed by the first spring 130 so that the third tapered portion 121a is in close contact with the first tapered portion 111, and at the same time, the second 1 The tightening unit grips and fixes the first reinforcing bar (11). In addition, the distal end of the second reinforcing bar 12 presses the second base 142, so that the second base 142 is separated from the inside of the second tightening unit 140, and then the detached second base 142 is first As it passes through the inside of the second spring 150 and enters the second reinforcing bar insertion groove 222, the second spring 150 is provided to surround the second reinforcing bar 12 in a contracted state, and the second spring 150 ) by the second tightening unit 140 is pressed, the fourth tapered portion 141a is in close contact with the second tapered portion 171 , and at the same time, the second tightening unit 140 grips the second reinforcing bar 12 . Fix it.

Referring to FIG. 6 , the first base 122 is formed in a shape corresponding to the inner circumferential surface of the first tightening unit 120 , and the first between the first jaws 121 on the outer circumferential surface of the first base 122 . A locking protrusion 122a engaged with the cutout 121c is formed, and as the second base 142 is formed in a shape corresponding to the inner circumferential surface of the second tightening unit 140, the second base 142 is formed on the outer circumferential surface of the second base. A locking projection 142a engaged with the cutout between the jaws 141 is formed.

6, the first cut-out of the first tightening unit 120 according to the embodiment of the present invention is formed extending from one side of the plurality of first jaws provided on the insertion port side toward the other side of the plurality of first jaws, The other end of the plurality of first jaws is interconnected, and the second cut-out portion of the second tightening unit is formed extending from one side of the plurality of second jaws provided on the insertion port side toward the other side of the plurality of second jaws. The two jaws are interconnected at the other end.

According to the described structure, the first and second reinforcing bars are inserted into the first tightening unit 120 and the second tightening unit 140, and at the same time, the other ends (P1) of the first and second jaws connected to each other are separated, respectively It is characterized in that the first and second jaws grip the first and second reinforcing bars.

When the first and second tightening units according to another embodiment of the present invention are described in detail with reference to FIG. 7, the first cut-out portion of the first tightening unit includes a plurality of first Is formed extending to the other end of the jaws, the plurality of first jaws are provided to be separated from each other by the cutout, the first tightening unit is a first outside recessed in a ring shape from the outer circumferential surface of the other end of the plurality of first jaws 121 Groove 123; and a first guide holder 124 having a ring shape corresponding to the first outer groove and fitted into the first outer groove to prevent the plurality of jaws from being easily separated from the first reinforcing bar 11 ); further includes. In addition, the second cut-out portion of the second tightening unit is formed to extend from one end of the plurality of second jaws provided on the insertion port side to the other end of the plurality of second jaws, so that the plurality of second jaws are provided to be separated from each other by the cut-out portion. , the second tightening unit 140 has a plurality of second outer grooves 143 recessed in a ring shape from the outer circumferential surface of the other end of the two jaws; and has a ring shape corresponding to the second outer groove, and is fitted into the second outer groove A second guide holder 144 that is coupled to prevent the plurality of two jaws from being easily separated from the second reinforcing bar 12; further includes.

According to the embodiment, the first and second

rebar insertion grooves

212 and 222 include female screws (not shown) formed along the inner circumferential surface, and male screws (not shown) having a shape corresponding to the female screw on the outer circumferential surface of the distal end of the reinforcing bar inserted into the reinforcing bar coupling groove. city) can be formed.

8 is a plan view and a side view showing in detail the first coupling member and the second coupling member of the one-touch reinforcing bar coupler of the present invention. Referring to (a) to (b) and (c) of Figure 8, the coupling piece 300, the first coupling module 310 formed on the other end of the first coupling member 210, and the second coupling It includes a second coupling module 320 formed on the other end of the member 220, the first coupling module 310 and the second coupling module 320 are coupled in a state positioned to face each other.

The longitudinal direction of the first and

second coupling members

210 and 220 and the first and second reinforcing

bars

11 and 12 is the x-axis, and the coupling direction of the first coupling member 210 and the second coupling member 220 is y In the axial direction, when the width directions of the first and second coupling members and the first and second reinforcing bars are in the z-axis direction, the first coupling module 310 is a first coupling surface 311 provided to face one y-axis direction. ), and the second coupling module 320 is provided to face the first coupling surface 311 and the opposite direction, and a second coupling surface 321 having a shape complementary to the coupling surface of the first coupling module 310 ), and when a virtual central axis is drawn in the y-axis direction on the first coupling surface 311 and the second coupling surface 321, the first coupling member 210 and the second coupling member 220 are In a state in which the virtual central axes are aligned to coincide with each other, the first coupling member 210 or the second coupling member 220 is moved in the y-axis direction to the first coupling surface 311 and the second coupling surface ( 321) are combined so that they are in contact with each other.

The first coupling surface 311 is formed to have a predetermined width and depth based on an imaginary center line, and repeats at regular intervals along the circumferential direction of the circular rim portion of the concave groove 311a and the concave groove 311a having a circular cross section. and a plurality of first protruding protrusions 311b formed by 321a) includes a plurality of second protruding protrusions 321b that are repeatedly formed at regular intervals along the circumferential direction of the circular rim portion, and the first protruding protrusions 311b are the first protruding protrusions ( The width of 311b) and the interval between the first protrusion 311b are gradually increased, and the second protrusion protrusion 321b is formed in a shape complementary to the first protrusion protrusion 311b to form a first coupling module 310 and When the second coupling module 320 is fastened, the protrusion 321a of the second coupling surface 321 is accommodated in the concave groove 311a of the first coupling surface 311, and the first protruding protrusion 311b is It is engaged with the second protrusion 321b and the coupling angle of the coupling piece 300 may have various angles due to the structure of the first protruding protrusion 311b and the second protruding protrusion 321b.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto. It is clear that the modification or improvement is possible.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

Claims

A connection angle between the first coupling member and the second coupling member is variable, including a first coupling member, a second coupling member, and a coupling piece for mutually coupling the first coupling member and the second coupling member A coupler body capable of becoming; , a second external coupler coupled to one end of the second coupling member and formed with a second hollow portion having a second taper portion having a gradually increasing diameter from the side of the insertion hole in which the reinforcing bar is inserted; and the first tapered portion A first tightening unit having first jaws having a corresponding third tapered portion formed on the outer circumferential surface and having first protrusions formed on the inner circumferential surface of the first reinforcing bar in close contact with the outer circumferential surface of the first reinforcing bar to grip the first reinforcing bar; and the second tapered portion A second tightening unit having a third tapered portion corresponding to the outer circumferential surface and having second jaws formed on the inner circumferential surface with second protrusions for gripping the second reinforcing bar in close contact with the outer circumferential surface of the second reinforcing bar; and the first fastening The first base and the second base are respectively accommodated in the unit and the second tightening unit; And, is provided between the first tightening unit and one end of the first coupling member to connect the first tightening unit to the first of the first hollow part. A first spring for elastically moving the first tapered part; and a first spring provided between the second tightening unit and one end of the second coupling member for elastically moving the second tightening unit to the second tapered part of the second hollow part 2 springs; including,

The first coupling member is formed to protrude along the longitudinal direction from one end of the first coupling member, the first coupling protrusion introduced into the first hollow portion of the first external coupler; And, the end surface of the first coupling protrusion A first reinforcing bar insertion groove formed concavely so that the distal end of the reinforcing bar can be inserted is formed,

The second coupling member is formed to protrude from one end of the second coupling member in the longitudinal direction, and a second coupling protrusion introduced into the second hollow portion of the second external coupler; and an end of the second coupling protrusion. One-touch reinforcing bar coupler, characterized in that the second reinforcing bar insertion groove formed concavely so that the distal end of the reinforcing bar can be inserted from the surface.
According to claim 1, wherein the first hollow portion of the first external coupler is formed in one side of the insertion hole is connected to one end of the first tapered portion, the first cylindrical first space portion having an inner diameter coincident with the outer diameter of the first reinforcing bar; and a cylindrical second space formed in the coupling hole formed in the opposite direction to the insertion hole, connected to the other end of the first tapered portion, and having an inner diameter matching the outer diameter of the first coupling protrusion;

The second hollow portion of the second external coupler is formed in the one-side insertion hole and connected to one end of the second tapered portion, and a cylindrical third space portion having an inner diameter coincident with the outer diameter of the second reinforcing bar; and, opposite to the one-side insertion hole It is formed in the coupling hole formed in the direction and is connected to the other end of the second tapered portion, the fourth cylindrical space having an inner diameter coincident with the outer diameter of the second coupling protrusion; includes, wherein the first spring is a second space accommodated in the unit, the second spring is accommodated in the fourth space,

Threads are formed on the inner peripheral surfaces of the second space and the fourth space, respectively, and on the outer peripheral surface of the first coupling protrusion and the outer peripheral surface of the second coupling protrusion, the thread of the second space and the screw corresponding to the thread of the fourth space One-touch reinforcing bar coupler, characterized in that each of the grooves is formed, the first external coupler is screwed to the first coupling member, and the second external coupler is screwed to the second coupling member.
According to claim 2, wherein the first tightening unit is inserted into the first tapered portion of the first hollow portion through the second space portion to grip the first reinforcing bar, the first incision in the longitudinal direction between the plurality of first jaws ; As it has a structure in which is formed, when the first tightening unit is moved toward the first tapered portion through the second space portion, the interval of the first incision is contracted so that the inner circumferential surface of the first tightening unit is of the first reinforcing bar Adhesion is made along the outer circumferential surface,

The second tightening unit is inserted into the second tapered part of the second hollow part through the fourth space part to grip the second reinforcing bar, and a second cut-out part in the longitudinal direction between the plurality of second jaws; As a result, when the second tightening unit moves toward the second tapered portion through the fourth space, the interval between the second incisions contracts and the inner circumferential surface of the second tightening unit is in close contact along the outer circumferential surface of the second reinforcing bar. One-touch rebar coupler, characterized in that.
According to claim 3, wherein the distal end of the first reinforcing bar presses the first base so that the first base is separated from the inside of the first tightening unit, and then the separated first base passes through the inside of the first spring and the first As it enters the rebar insertion groove, the first spring is provided to surround the first reinforcing bar in a contracted state, and the first tightening unit is pressed by the first spring so that the third taper part is in close contact with the first taper part At the same time, the first tightening unit grips and fixes the first reinforcing bar,

When the distal end of the second reinforcing bar presses the second base, the second base is separated from the inside of the second tightening unit, and then the separated second base passes through the inside of the second spring and enters the second reinforcing bar insertion groove. Accordingly, the second spring is provided to surround the second reinforcing bar in a contracted state, and the second tightening unit is pressed by the second spring so that the fourth taper part is in close contact with the second taper part, and at the same time, the second tightening unit One-touch reinforcing bar coupler, characterized in that it is fixed by gripping the second reinforcing bar.
The method of claim 4, wherein the first base is formed in a shape corresponding to the inner circumferential surface of the first tightening unit, the outer circumferential surface of the first base is formed with a locking projection engaged with the cutout between the first jaws, the As the second base is formed in a shape corresponding to the inner circumferential surface of the second tightening unit, one-touch reinforcing bar coupler, characterized in that a locking projection engaged with the cutout between the second jaws is formed on the outer circumferential surface of the second base.
According to claim 5, wherein the first cut-out portion of the first tightening unit is formed to extend from one side of the plurality of first jaws provided on the insertion port side toward the other side of the plurality of first jaws, the plurality of first jaws have the other ends of each other connected,

The second cut-out portion of the second tightening unit is formed to extend from one side of the plurality of second jaws provided on the insertion port side toward the other side of the plurality of second jaws, characterized in that the plurality of second jaws are interconnected at the other end One-touch rebar coupler.
According to claim 5, wherein the first cut-out of the first tightening unit is formed to extend from one end of the plurality of first jaws provided on the insertion port side to the other end of the plurality of first jaws, and the plurality of first jaws are mutually formed by the cutout. Provided to be separated, the first tightening unit has a first outer groove recessed in a ring shape from the outer peripheral surface of the other end of the plurality of first jaws; and a ring shape corresponding to the first outer groove, the first outer groove It further includes; a first guide holder fitted to the

The second cut-out portion of the second tightening unit is formed to extend from one end of the plurality of second jaws provided on the side of the insertion hole to the other end of the plurality of second jaws, and the plurality of second jaws are provided to be separated from each other by the cut-out portion, The second tightening unit has a second outer groove recessed in a ring shape from the outer circumferential surface of the other end of the plurality of second jaws; and a second outer groove having a ring shape corresponding to the second outer groove and fitted into the second outer groove One-touch reinforcing bar coupler further comprising a guide holder.
[Claim 6] The method of claim 5, wherein the first and second reinforcing bar insertion grooves include a female screw formed along an inner circumferential surface, and a male screw having a shape corresponding to the female screw is formed on the outer circumferential surface of the distal end of the reinforcing bar inserted into the reinforcing bar coupling groove. One-touch rebar coupler.
The method according to claim 8, wherein the coupling piece comprises a first coupling module formed at the other end of the first coupling member and a second coupling module formed at the other end of the second coupling member, the first coupling module and the second coupling member. The coupling module is coupled in a state positioned opposite to each other,

The longitudinal direction of the first and second coupling members and the first and second reinforcing bars is the x-axis, the coupling direction of the first coupling member and the second coupling member is the y-axis direction, and the first and second coupling members and the first , when the width direction of the two reinforcing bars is in the z-axis direction, the first coupling module includes a first coupling surface provided to face one y-axis direction, and the second coupling module is directed in the opposite direction to the first coupling surface It is provided and includes a second coupling surface having a shape complementary to the coupling surface of the first coupling module, and when an imaginary central axis is drawn on the first coupling surface and the second coupling surface in the y-axis direction, the first coupling member and The second coupling member moves the first coupling member or the second coupling member in the y-axis direction so that the first coupling surface and the second coupling surface come into contact with each other in a state in which the virtual central axes are aligned with each other. One-touch rebar coupler to join.
The method according to claim 9, wherein the first coupling surface is formed to have a predetermined width and depth based on a virtual center line, and is repeatedly formed at regular intervals along a circumferential direction of a concave groove having a circular cross section and a circular edge portion of the concave groove. It includes a plurality of first protruding protrusions, and the second coupling surface is formed to have a certain width and height based on an imaginary center line, and repeats at regular intervals along the circumferential direction of the protrusion having a circular cross section and the circular edge of the protrusion. It includes a plurality of formed second protrusion protrusions, and the first protrusion protrusion has a width and a gap between the first protrusion protrusion and the width of the first protrusion protrusion gradually increasing as the distance from the virtual center line increases, and the second protrusion protrusion includes the first protrusion protrusion It is formed in a shape complementary to the protrusion and when the first coupling module and the second coupling module are fastened, the protrusion of the second coupling surface is accommodated in the concave groove of the first coupling surface, and the first protruding protrusion is engaged with the second protruding protrusion. One-touch reinforcing bar coupler in which the coupling angle of the coupling piece can have various angles by the structure of the 1 protruding protrusion and the second protruding protrusion.