KR20190096056A - Coupling for steel reinforcement connecting - Google Patents

Abstract

The present invention relates to a coupling for connecting reinforcing bars, which is possible to expect to reduce a manufacturing cost and improve productivity by simplifying a structure of a coupling. To this end, the coupling for connecting reinforcing bars forms a hanging means at an inner surface central portion of a connection pipe body, sequentially inserts an elastic support spring and a divided binding device through both side end portions of the connection pipe body, limits movement by the hanging means formed on the inner surface of the connection pipe body, and then is possible to prevent separation of the elastic support spring and the divided binding device inserted into the inner surface through a binding part pressing both side end portions of the connection body to be contracted.

Description

Coupling for Reinforcing Bars {COUPLING FOR STEEL REINFORCEMENT CONNECTING}

The present invention relates to a coupling for connecting reinforcing bars constructed in a concrete structure to reinforce a concrete structure, and in particular, to simplify the structure of the coupling, thereby improving productivity and reducing manufacturing costs. .

  In general, reinforced concrete is to complement the advantages and disadvantages of each of the reinforcement and concrete, concrete is a structure that can improve the durability against external forces by burdening the compressive stress, the tensile stress on the reinforcing bars.

In the construction of the reinforced concrete, the reinforcement process of the reinforcement is the most important process to determine the life and stability of the reinforced concrete structure.

In addition, due to the increase in the size and height of the reinforced concrete structure, the length of the reinforcing bars in the concrete is also extended, and in the case of reinforcing bars, the length of the reinforcing bars is limited to a standard product of a certain length. Becoming

Reinforcing bars are mainly applied to joints, gas welding joints, and mechanical joints.In particular, the mechanical joints that connect reinforcing bars without mechanical or physical changes to the shape of the reinforcing bars absorb sufficiently static and dynamic loads, so It is one of the methods to secure the stable construction of reinforced concrete structures by maintaining the durability.

Looking at the prior art on the mechanical joint method of the reinforcing bar, Utility Model Registration No. 20-0341839 "Rebar Fitting Device" (Patent Document 1) and Utility Model Registration No. 20-0390651 "Double-sided fastening bar joint" ( Patent Document 2) and Utility Model Registration No. 20-0415715, " Rebar Connection Device " (Patent Document 3) and the like are provided.

Examining the technical contents of the Patent Document 1, as a reinforcing bar connecting device, formed by a semi-circular body to form a plurality of grooves on the inner circumference, tapered outer peripheral surface to form a pair of the ends of the reinforcing bars are connected to the outside A coupler that couples to the outer periphery of the rebar so as to be partially exposed, and a coupler having a tapered hole formed on one side of a hole formed therein so as to couple the cut piece therein and a female screw on the other side, and the joint A male screw is formed on one side of the outer circumference to be coupled with the female screw of the coupler, and a taper hole is formed to insert the cut piece in one side of the hole formed therein. To be combined.

The technical contents of Patent Literature 2 include a first pusher fastening hole formed with a male thread in the circumferential direction of the outer surface of the upper and lower regions, and having a elasticity in the construction of a fastening reinforcing bar fitting. At least two insertion grooves are formed and inserted into the first and second push-fixing rings respectively provided in the first push-tightening fixture, and the insertion grooves of the first and second push-fixing rings, respectively; The first and second presses, the springs provided in the upper inner region of the first and second presses, respectively, and the inside penetrate through the presses so as to contact one ends of the first and second presses. It is characterized in that it comprises a second clamping fastener fastened to the male screw of the upper / lower region of the iron fastener and formed with an inclined surface and a female thread inside.

In addition, when reviewing the technical contents of Patent Document 3, in constructing a reinforcing bar connection device, a plurality of arc grooves are formed to form a plurality of node grooves on the inner circumference, and the outer circumference is tapered to form a coupling groove at the rear. Formed and integrally combined to form an incision piece coupled to the outer periphery of the reinforcing bar, and to form a tapered hole therein so as to join the combined incision inside, and to form a female threaded hole and a male threaded hole to communicate with the rear, respectively A pair of joint couplers, a male coupler and a female thread formed on both sides of the outer periphery so as to be fastened to the female thread and the male thread of the joint, and a coupling coupler having a communication hole through the inner center thereof, and the plurality of cut pieces The contact surface is bent so as to be in close contact with the rear end surface of the incision while forming a locking jaw on one side to be inserted into the coupling groove to be integrated. Combination member is formed so as to be formed between the rear end of the combination member and the coupling coupler both ends of the coupling to press the combination member to the spring to allow the incision piece to be pressed into the tapered hole.

The reinforcing bar coupling structure of Patent Documents 1 to 3 is a screw coupling the coupling coupler on both sides of the coupling coupler, the outer peripheral surface is inclined to be installed by inserting the cut pieces are inclined, the coupling coupler to be connected from both sides After inserting the reinforcing bars, screw the joint coupler, and the two binding pieces located on the inner surface are retracted to secure the reinforcing bars.

Therefore, in the case of the reinforcing bar connection structure as described above, the coupling coupler is screwed on both sides of the coupling coupler, and also a structure to separately assemble the blocking plate to prevent the reinforcing bars inserted from both sides on the inner surface of the coupling coupler more than necessary. In addition, since the manufacturing and assembly of each part takes a lot of time and manpower, not only the manufacturing cost increases but also the connection process of the rebar is cumbersome.

Utility Model Registration No. 20-0341839 "Rebar Fitting Device" Utility Model Registration No. 20-0390651 "Double Side Fastening Reinforcing Bar Joint" Utility Model Registration No. 20-0415715 "Rebar Fitting Device"

The present invention is to simplify the structure of the coupling in configuring the coupling for connecting the reinforcing bar, it is possible to expect a reduction in production cost and productivity.

As a means for solving the above problems, the present invention constitutes a coupling means in the center of the inner surface of the connecting pipe in configuring the coupling for connecting the reinforcing bar, and through the connecting pipe both sides end, the tangy spring and the split binding sphere are inserted in sequence Then, the movement is controlled by a locking means configured on the inner surface of the connecting pipe, and then the separation of the tanger spring and the split binding hole fitted to the inner surface through the binding portion which presses both ends of the connecting pipe can be prevented.

The present invention constitutes a coupling means for connecting the reinforcing bar, and constitutes a locking means in the center of the inner surface of the connecting pipe, and through the both ends of the connecting pipe, the tangy springs and the split fastening holes are inserted in turn to the locking means configured on the inner surface of the connecting pipe. By controlling the movement by means of pressing the both ends of the connector body, the separation of the tangier spring and the split binding hole fitted to the inner surface can be prevented, thereby simplifying the coupling structure, thereby reducing the manufacturing cost and productivity. It can be expected to improve.

1: perspective view of a coupling for reinforcing bar connections provided by the present invention
2 is a cross-sectional view of FIG.
3: Reinforcing bar is coupled to the coupling of the present invention
Figure 4 is an exploded perspective view of the expansion ring fitted to the division binding sphere of the present invention
5: Assembly view of FIG. 4
6 is a cross-sectional view of the connector for manufacturing a coupling of the present invention
FIG. 7: A state diagram in which the engaging piece is configured by pressing the connecting pipe of FIG. 6
8 is a state diagram in which the tanger spring and the split binding sphere are fitted in the state of FIG.
9: A state diagram in which a binding portion is formed by pressing both ends of the connecting pipe in the state of FIG. 8.
10: Cross section configuration diagram of FIG. 9
11 is a perspective view of another embodiment of the present invention
12 is a cross-sectional view of FIG.
13: Perspective view of the spring used in the present invention
14: Reinforcing bar is inserted into the coupling of Figure 11
15: Cross-sectional view of the connecting pipe for manufacturing the coupling of FIG.
FIG. 16: is a state diagram in which the binding groove was formed in the state of FIG.
FIG. 17: A state in which a stop ring, a Tanger spring, and a split fastener are fitted in the state of FIG.
FIG. 18: A state diagram in which both ends of the connecting pipe are retracted to form a binding part in the state of FIG. 17.
Figure 19: Illustrated diagram of another embodiment of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 is an exemplary view showing the configuration of the coupling 10 for reinforcing bar connections provided by the present invention.

Referring to the manufacturing process of the coupling 10, by pressing the central portion of the connecting pipe 20 configured as shown in Figure 6, as shown in Figure 7, a plurality of toward the inner side, that is, the hollow portion 21 of the connecting pipe 20 The locking piece 30 is configured to protrude, but in the embodiment of the invention, three locking pieces 30 are configured.

At this time, the degree of protrusion of the locking piece 30 protruding toward the hollow portion 21 may be such that the rebar 90 fitted at both ends of the coupling 10 is caught so that the movement can be stopped.

As described above, when the plurality of locking pieces 30 are formed in the center of the connecting pipe 20, the tangent springs 40 and the split binding holes 50 are sequentially inserted at both ends of the connecting pipe 20 as shown in FIG. , Both side stop spring 40 is caught by the locking piece 30 to stop.

In the above state, as shown in Figure 9 by pressing the both ends of the connecting pipe 20 to the inlet portion is retracted, the binding portion 60 is formed with an inclined surface 61 is formed in the inner and outer sides, and thus the tangy spring 40 and The split binding port 50 is manufactured with a coupling 10 which is maintained in an assembled state in the hollow portion 21 of the connecting pipe 20.

The divided binding port 50 is divided into two to three, the inner surface is formed with a binding hole 52 is formed with a locking projection 51, the outer surface is composed of an inclined surface 53 is larger in diameter toward the inside have.

Further, the inclined surface 53 of the split binding member 50 has the same inclination angle as the inclined surface 61 formed inside the binding part 60 of the connecting pipe 20, so that the split binding member 50 is the binding portion ( The inclined surface 53 of the division binding port 50 and the inclined surface 61 formed inside the binding portion 60 while being pushed by the tanger spring 40 and pushed outward in the state of being fitted into the hollow portion 21 of the 60. ) Will come into contact with each other.

Inside the inlet portion of the split binding hole 50 fitted to the inner surface of the binding portion 60 of the connecting pipe 20, as shown in Figs. 4 and 5 by engaging the expansion ring 56, the engaging piece 57 is formed, It is preferable to divide the split fastener 50 into a predetermined size in a state of being fitted to the inner surface of the binding part 60 of the connecting pipe 20.

At this time, the outer diameter of the expansion ring 56 is configured to be larger than the outer diameter of the reinforcing bar 90, the interval between the engaging piece 57 formed on the inner surface is configured to be narrower than the outer diameter of the reinforcing bar, divided by the expansion ring 56 While the 50 is kept in an expanded state, when the reinforcing bar 90 is fitted through the coupling part 60 of the connecting pipe 20, the end of the reinforcing bar pushes the engaging piece 57 of the expansion ring 56. Separating from the division binding port 50, it can be easily fitted into the binding hole (52).

The expansion ring 56 separated from the split binding hole 50 remains on the inner surface of the hollow portion 21 of the connecting pipe 20, but is not a problem for the operation of the coupling 10.

In addition, as shown in Figure 4, the expansion ring 56 fitted to the split binding port 50, it is preferable to install in two places.

Coupling 10 to be provided in the second embodiment, as shown in Figures 11 to 14, the difference between the "Example 1" coupling 10, the support for the reinforcing bar 40 and the reinforcing bar There is a difference in the locking means, the rest of the configuration is the same.

Referring to the manufacturing process of the coupling 10 of "Example 2", the inner surface center portion of the connecting pipe 20 configured as shown in FIG. 15 is cut to form a binding groove 33 as shown in FIG.

When the binding groove 33 is cut in the central portion of the inner surface of the connecting pipe 20, the stop ring 70 composed of the finger piece 71 and the locking piece 72 is fitted into the binding groove 33 as shown in FIG. Put it in.

When the stop ring 70 is inserted into the binding groove 33 of the connecting pipe 20, the tool can be inserted into the through hole 73 formed at both sides of the locking piece 72, and then simply compressed by the stop ring 70. have.

At this time, the interval between the engaging stone piece 72 configured in the stop ring 70 is a narrower interval than the outer diameter of the reinforcing bar 90 to be connected.

When the stop ring 70 is coupled to the inner surface of the connection pipe 20, the stop ring 70 is inserted at both sides, as shown in FIG. 5, and then both ends of the connection pipe 20 are pressed to open the inlet. By adding and retracting, the binding portion 60 is formed with an inclined surface 61 on the inside and the outside, so that the tangent spring 40 and the split binding port 50 are assembled in the hollow portion 21 of the connecting pipe 20. The coupling 10 which is kept in the closed state is manufactured.

The configuration and action of the split fastener 50 to be fitted to the inner surface of the connecting pipe 20, or the expansion ring 56 for expanding the split fastener 50 is the same as the "Example 1".

In the practice of the present invention, as shown in FIG. 19, the connecting pipe body 20 constituting the coupling 10 may be used in a quadrangular shape instead of a circular pipe body. On the inner surface of the connecting pipe 20, the first embodiment constitutes a locking piece 30 as in the above, such that the movement of the stop spring 40 and the reinforcing bar 90 is controlled, and the surface of the connecting pipe 20 is touched. The spring 40 and the division binding port 50 may be inserted and then pressurized by a press to configure the binding unit 60 having the inclined surfaces 61 formed at both ends.

When the coupling 10 of the present invention configured as described above is connected to the reinforcing bar 90 used for reinforcing a structure when constructing a concrete structure, the coupling 10 is not different from the conventional method.

However, the coupling 10 provided by the present invention is not only simple in configuration, but also easy to manufacture and mass-produced, and can reduce production costs.

That is, the coupling 10 of the present invention constitutes a stopper piece 30 as in “Example 1” or a stop ring 70 as in “Example 2” at the center of the connecting pipe 20. Coupling (10) as a means for forming the binding portion (60) in which the inclined surface (61) is formed by inserting the tangent spring (40) and the split binding hole (50) on both sides of the connecting pipe (20). This is because it is produced easily.

In addition, the expansion ring 56 is fitted to the inlet of the split binding port 50 fitted in the binding unit 60 of the connecting pipe 20, the reinforcing bar (90) to which the binding hole 52 of the split binding port 50 is to be connected. When the reinforcing bar 90 is wider than the outer diameter of the cuff, and the reinforcing bar 90 is inserted at both sides of the coupling part 60 of the connecting pipe 20, the end of the reinforcing bar 90 is fitted to the engaging piece 57 of the expansion ring 56. It comes in contact with.

When the reinforcing bar 90 is continuously pushed in the above state, the expansion ring 56 is separated from the split fastener 50 by the locking piece 57, and at the same time, the reinforcing bar 90 is divided by the fastener 50 It is easily fitted into the binding hole 52, the reinforcement 90 is stopped by the stopper piece 30, or the stop ring 70 configured in the center of the connecting pipe 20.

When the reinforcing bar 90 stops moving in the state of being fitted to the connecting pipe 20, the inclined surface 53 of the split binding port 50 is pushed outwardly by the split binding hole 50 by the tangy spring 40. And, the inner diameter of the binding hole 52 is reduced by the inclined surface 61 of the binding portion 60, so that the locking projection 91 formed in the reinforcing bar 90 is the locking projection 51 of the split binding port 50. While selectively engaging with, the connection of the reinforcing bar 90 using the coupling 10 is completed.

As described above, the present invention not only reduces the manufacturing cost by simplifying the configuration of the coupling, but also makes it easy to use, thereby improving the efficiency of the rebar connection work.

(10)-Coupling (20)-Connector
(21)-Heavy Studies (30)-Jang-dong Stone
(33)-Blocking Groove (40)-Tangji Spring
(50)-Split Binding (51)-Grip
(52)-Blocking Ball (53)-Slope
(56)-Extension Ring (57)-Jang
(60)-Binder (61)-Slope
(70)-Stop Ring (71)-Tanji
(72)-Job Stone (73)-Public

Claims (3)

A plurality of locking pieces 30 are projected into the hollow portion 21 in the center of the connecting pipe 20, and the finger springs 40 and the split binding holes 50 are inserted into both ends of the connecting pipe 20, The spring 40 is caught and fixed to the locking piece 30, and the split binding port 50 is held by the tanger spring 40, and then the both ends of the connecting pipe 20 are pressed to bind the inclined surface 61. Comprising a portion 60, characterized in that the fastening spring (40) and the split binding sphere 50, which is fitted to the hollow portion 21 of the connecting pipe 20 through the binding portion 60 is fixed to the binding. Coupling for rebar connection. A binding groove 33 is formed at the inner center of the hollow portion 21 of the connecting pipe 20, and a stop ring 70 composed of a finger piece 71 and a locking piece 72 is fitted in the binding groove 33. Coupling and inserting the tangy spring 40 and the split binding hole 50 at both ends of the connecting pipe 20, the tangy spring 40 is fixed to the stop ring 70, the split binding port 50 is tanji After the spring 40 is pressed, the both ends of the connecting pipe 20 are formed to form the binding part 60 having the inclined surface 61 formed therein, and the connecting pipe 20 is fitted to the connecting pipe 20 through the binding part 60. Coupling for reinforcing bar connections, characterized in that the fastening spring (40) and the split fasteners (50). Coupling for reinforcing bar connections according to claim 1, characterized in that the connecting pipe (20) in which the binding part (60) is formed has a quadrangular shape.

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