KR200413225Y1 - Reinforcing bar coupler - Google Patents

Abstract

The present invention relates to a reinforcing bar connector for connecting reinforcing bar, wherein the plunger piece consisting of three pairs that strongly grasps the outer circumferential surface of the reinforcing bar and an elastic ring are connected to each other by a pair of piece coupling members, and the inside is blocked by an intermediate stopper. Each of the two inner sides of the sleeve having a female thread on the inner side of the sleeve and loosely screwed a pair of fastening bolts on both ends of the sleeve, and provided with a reinforcing bar connector made of a combination, the end of the reinforcing bar to be connected to the integrated reinforcement When both sides of the connector are pulled into the inside and the tightening bolts are completely tightened, the inner side of the tightening bolts strongly presses the presser body and at the same time, the presser member presses the reinforcing bar and connects the two bars. Easily connects the construction and the variety and diameter of rebar bars of the same standard Use to provide a reinforcement fitting with all the safety residual deformation is hardly occurred less than specified in the application and can connect all reinforced joints.

Rebar, Bar, Deformed Bar, Rebar Connection

Description

Reinforcing bar coupler {Reinforcing bar coupler}

1 is an exploded perspective view of a first embodiment of the present invention.

2 is a perspective view of a coupled state of the first embodiment of the present invention.

Figure 3 is a longitudinal sectional view of the coupled state of the first embodiment of the present invention.

Figure 4 is a longitudinal cross-sectional view of the initial stage coupling state of the fastening of the first embodiment of the present invention.

Figure 5 is a longitudinal cross-sectional view of the coupling completion stage coupling state of the first embodiment of the present invention.

Figure 6 is a perspective view of the knitting member of the first embodiment of the present invention.

7 is a front view of the knitting member of the first embodiment of the present invention.

8 is a perspective view of the coupling coupling member and the elastic ring of the first embodiment of the present invention.

9 is an exploded perspective view of a second embodiment of the present invention.

10 is a longitudinal cross-sectional view of the coupled state of the second embodiment of the present invention.

Figure 11 is a perspective view of the knitting member of the second embodiment of the present invention.

12 is a front view of the knitting member of the second embodiment of the present invention.

Figure 13 is a perspective view of the coupling coupling member and the elastic ring of the second embodiment of the present invention.

14 is an exploded perspective view of a third embodiment of the present invention.

15 is a longitudinal sectional view of a coupled state of a third embodiment of the present invention.

16 is an exploded perspective view of a fourth embodiment of the present invention.

17 is a perspective view of a coupled state of a fourth embodiment of the present invention.

18 is a longitudinal sectional view of a coupled state of a fourth embodiment of the present invention.

19 is a perspective view of a coupled state of a fifth embodiment of the present invention.

20 is a longitudinal sectional view of the coupled state of the fifth embodiment of the present invention.

21 is a perspective view of a coupled state of a sixth embodiment of the present invention.

Figure 22 is a longitudinal sectional view of the engaged state of the sixth embodiment of the present invention.

Figure 23 is a perspective view of the coupled state of the seventh embodiment of the present invention.

24 is a longitudinal sectional view of the engaged state of the seventh embodiment of the present invention.

25 is an exploded perspective view showing a conventional technology.

Fig. 26 is a longitudinal sectional view of the engaged state showing the prior art.

27 is an exploded perspective view showing another conventional technique.

Fig. 28 is a longitudinal cross-sectional view of a coupled state showing another conventional technique.

29 is an exploded perspective view showing still another conventional technique.

Fig. 30 is a longitudinal sectional view of a coupled state showing still another conventional technique.

<Description of Drawing>

1, 1a: rebar

11: rib 12: nodes

2, 2a, 2b, 2c, 2d: sleeve

21: middle stopper 21a: tailstock

22: female thread 23, 23a: improved part

24: rebar guide groove 25: jam jaw

3, 3a: Tightening bolt

3b: tightening nut

31, 31a: tapered surface 32: male thread portion

33: head 34: construction guide

35, 35a: improved part 36, 36a: spline

37: female thread

4, 4a: blotter paper

41: tapered surface 42: parallel surface

43: engaging portion 44: coupling portion

45: engaging protrusion 46: incision

5, 5a, 5b, 5c: one-piece coupling member

51, 51a, 51b: expansion and contraction portion 52: support portion

53: fixing protrusion 54, 54a: fixing jaw

55, 55a: ring support

6: elastic ring

7: Plate Nut

7a: plate

71: nail hole

8: H beam

100: pipe

200: joint pipe

300: tightening nut

400: annular wedge

200a, 200b: sleeve

300a, 300b: Tightening bolt

400a, 400b

500b: coupling member

The present invention relates to a reinforcing bar connector for connecting reinforcing bar, wherein the plunger piece consisting of three pairs that strongly grasps the outer circumferential surface of the reinforcing bar and an elastic ring are connected to each other by a pair of piece coupling members, and the inside is blocked by an intermediate stopper. Each of the two inner sides of the sleeve having a female thread on the inner side of the sleeve and loosely screwed a pair of fastening bolts on both ends of the sleeve, and provided with a reinforcing bar connector made of a combination, the end of the reinforcing bar to be connected to the integrated reinforcement It is related to the reinforcing bar connector which connects the two reinforcing rods when the inner side of the fastening bolts strongly presses the presser piece when the bolt is completely inserted and the tightening bolt is completely tightened at the same time.

In general, the reinforcing bar used as a frame in the construction of reinforced concrete structures are mostly connected because they are produced in a limited length for transportation or working convenience. There are various ways of connecting reinforcing bars as illustrated below.

In the regulation of reinforcing bars, the reinforcing bar with the nominal name of D29 (29mm in diameter) allows overlapping joints where the ends are overlapped and tied together by binding lines. In the construction site, however, the joint strength is not allowed to be over 125% of the reinforcement strength of the base material. For example, in the gas welding method, in which the end of the reinforcing bar is heated by oxygen acetylene gas flame and pressurized by a pressure welding machine, secondary stress caused by heat deformation occurs in the joint, so that the joint is more vulnerable than the reinforcing base material. Up the ends of the two rebars or roll the ribs and bars by forging The threaded joints, which are machined in a circular shape and then machined with a male thread by cutting and rolling, are connected to female threaded couplers. It is troublesome to work and takes a lot of processing time.

Due to this problem, as shown in FIGS. 25 to 26, the pipe 100 provided by the utility model filed by the applicant of the present invention and registered under Utility Model No. 228039 (name of the design: piping connection structure) is connected. It applies to the connection of similar reinforcing bars in the technical field, using technical ideas, including the joint pipe 200 and the annular wedge 400 and the fastening nut 300 as it is, as an example and in FIGS. 27 to 28 As shown in the figure, a pair of pieces 400a are formed of two pairs of two grooves each having an arcuate cross section and engaging with the bar 12 of the reinforcing bar on the inner surface and the tapered surface in the outer surface thereof. And cylindrical one side of the outer side has a male thread portion and the other side connected to it is formed in a polygonal shape to be fastened with a spanner and the inner side is a tapered surface corresponding to the tapered surface of the piece. Consists of a pair of tightening bolt 300a and a sleeve (200a) formed in the inner surface of the inner bolt in a cylindrical shape with a female threaded portion to be fastened to the male threaded portion of the tightening bolt (300a), a pair of tightening to each end of the two reinforcing bars to be connected Inserting the bolt (300a) and coupled to the end of the reinforcing bar (400a) reinforcement from both sides of the sleeve (200a), and then there is a knitted joint method for connecting the tightening bolt (300a) completely connected to this method of the rebar Because there is a deviation in the interval between the nodes, and the staggered shape of the nodes formed around two ribs in the axial direction is varied and the diameters are varied, there is a limitation that it can be produced in a customized form and used in a limited range, and the knitted fabric 400a and the sleeve ( Since 200a) and the fastening bolt 300a are provided separately, there is inconvenience in that components must be combined in the field.

In another example, as shown in FIGS. 29 to 30, since the knitting joint method is limited in the scope of application due to the variation in the variety and diameter of the bar of the deformed reinforcing bar, it is possible to connect the reinforcing bars of various companies in one construction site. Reinforcing bar connector using the connection method using the taper used in the conventional reinforcing bar connection technology and the conventional pipe connection or taper grip device and machine mechanisms as it is used for the connection of reinforcing bars, the structure and operation The effect is similar to the one-piece joint method, but a tooth-like engaging portion is formed on the inner surface of the bar 12 and the rib 11 of the deformed reinforcing bar, and the outer surface is tapered in the axial direction. Combining the pair of pieces (400b) consisting of a pair and the shape of a circular ring form the two or more pieces (400b) integrally Is a pair of coupling members (500b) and cylindrical, one side of the outer surface is a male thread portion and the opposite side is formed in a polygonal cross section so that it can be tightened with a spanner and the inner surface is tapered corresponding to the outer tapered surface of the piece (400b) Consisting of a pair of tightening bolts 300b and a cylindrical portion of the inner surface of the inner block is closed and the inner surface is composed of a sleeve (200b) formed with a female screw portion is fastened to the male screw portion of the outer surface of the tightening bolt (300b), Integrally coupled with the coupling member 500b and installed on both inner surfaces of the sleeve 200b, and a pair of tightening bolts 300b are loosely screwed at both ends of the sleeve 200b to be assembled and then connected. Insert the ends of the two reinforcing rods into the interior of the tightening bolt (300b) and then there is a reinforcing bar connection method to connect the tightening bolt (300b) completely, the connection of the reinforcing bar is convenient However, since the inner surface of the tightening bolt 300b is tapered and the outer surface of the knitting member 400b is tapered, the fastening bolt 300b is fastened to the sleeve 200b to press the knitting member 400b to simply press the knitting member 400b into the The force acts only in the direction of the central axis so that the engaging portion of the knitting member 400b presses the bars 12 and ribs 11 of the reinforcing bar. Since it is a structure that cannot be removed in advance so that it rarely occurs, when the external load acts on the rebar, the rebar is pulled out and slips from the knitted fabric 400b, causing the concrete to crack from the periphery of the joint, which is a serious problem for the safety of the structure. It can happen.

If the joint part of the pipe joint proposed in the related art is secured only by airtightness and firmness, it may not be a problem even if a slight slip occurs at the joint part by the action of external tension and compression load, but at the joint part of the reinforcing bar It is disclosed in 'Method of Testing Mechanical Joints of Reinforced Concrete Bars' (KS D 0249) so that it is impossible to use slips at the joints even when tensile or compressive loads are applied. 'Residual deformation of the joint is specifically defined that the strain at 2% after repeating a stress corresponding to 95% to 2% of the base steel's yield point once should be 0.3mm or less. In this case, it can be seen that the method applied to the conventional pipe connector or the like cannot be applied as it is.

The present invention is to solve the problems in the conventional joint of the reinforcing bar, the applicant of the present invention for this purpose, the intermediate stopper of the partition form in the middle of the cylindrical shape is formed on both sides of the inner thread is formed on both sides inside The squeezing body, the one-piece coupling member and the elastic ring are assembled in one sleeve, and there is a sawtooth-shaped engaging portion on the inner surface, and the outer surface is tapered in the axial direction, and the three pieces are brought into close contact with the outer circumferential surface of the rebar. Combining the blotter piece and the blotter piece to be combined at equal intervals along the circumference and are integrally coupled to each other, and a pair of the body coupling member and the blotter piece are formed to stretch in the direction of the center of gravity. In the step, it is induced to push in the direction of the outer circumferential surface of the reinforcement by its own resistivity, In the system, the elastic material is applied in the form of a band that provides the same initial tensile load as the reinforcing bar is pulled in both ends while the blotter piece moves in the direction of the middle stopper of the sleeve while the inner engaging portion is completely engaged with the rebar. Consists of a pair of elastic ring and the inner surface is made of a taper having the same inclination angle as the outer surface of the blotting piece and comprises a pair of tightening bolts formed with a male screw and a head on the outer surface to be screwed to both sides of the sleeve Coupling method is to combine the blotting pieces and the elastic ring with the one-piece coupling member to install inside the both sides of the sleeve and to loosely screw a pair of tightening bolts at both ends of the sleeve to be provided in the assembled state The ends of the two reinforcing bars fully inserted from the inlet ends of the As the next tightening bolt is connected to the reinforcing bar completely, the present invention enables connection of various types of reinforcing bars and bars, and it is easy to connect in the field because all the parts are provided as one reinforcing bar connector and the joint is firm. In addition, the initial slip due to the external load occurring at the joint is hardly occurred below the residual deformation amount suggested in 'Method for testing the mechanical joint of steel bars for reinforced concrete' (KS D 0249).

Therefore, the purpose of the present invention is to provide easy construction of rebar connection and applicability to connect all rebars by accepting all the variations and diameter variations of rebar bars of the same standard. It is to provide rebar connector with all.

The present invention is formed in the inner surface engaging portion for pressing the outer circumferential surface of the reinforcing bar, the outer surface is tapered in the axial direction to combine the three blotting pieces in a circular knitted coupling member at one end and a circular elastic ring at the other end of the knitted coupling member It is provided with a pair as a combination, the center of the cylinder is blocked with a middle stopper, each side is accommodated inside both sides of the sleeve formed with female threads on both inner surfaces, the inner surface is cylindrical and the outer surface consisting of the taper of the blotter piece Tapered with the same inclination angle to be in close contact with one side of the outer surface is a polygonal cross-section to fasten the tool and the other side is a pair of tightening bolts formed with the same male thread of the sleeve is fastened to the female thread of the sleeve of the sleeve Loosen the screws on both sides to integrate them into one component, and then When the tip of the muscle is inserted at both ends of the integrated part and the pair of fastening bolts are fully tightened to the sleeve, the two bars are firmly connected and the slip is hardly generated even if the external tension load is applied to the joint. do.

The present invention is particularly easy to be combined with the blotting paper to increase the elasticity in the transverse direction, the three blotting paper body formed by forming a corrugated expansion and contraction of the pleated form of the coupling member is easily pressurized in the direction of the outer circumferential surface of the rebar while receiving a small resistance In the initial stage in which the end of the blotting piece coupled to the piece coupling member fastens the tightening bolt to the sleeve by seating the elastic ring on the piece coupling member, the blowing piece is formed by the resistance of the elastic ring. By controlling the middle stopper not to proceed, the pressure squeezing body presses only in the direction of the outer circumferential surface of the reinforcing bar so that the latching portion of the squeezing body keeps in close engagement with the outer circumferential surface of the reinforcing bar. While the sharp end of the engaging portion of the blotter is tightly coupled to the outer circumferential surface of the rebar, When proceeding toward the center of the rib, the reinforcing bar is pulled in both directions due to the resistance of the middle stopper of the sleeve. After the concrete is finished, the initial slip does not occur even if the tensile load is applied to the joint to prevent cracking of the surrounding concrete.The end face of the rebar cut by the cutter is inclined rather than perpendicular to the central axis. If the intermediate stopper is flat, the reinforcing bar is inclined with respect to the center axis of the reinforcing connector when the tip of the reinforcing bar is in close contact with the intermediate stopper. Interlocked with one piece The contact surface of the muscle comes into contact with the apex of the hemisphere, so that the contact area becomes smaller, and when the tightening bolt is tightened, the reinforcing bar is smoothly engaged with the blotting body to facilitate the fastening operation. By contacting the center part, the center axis of the two bars connected in parallel with the reinforcing bar guide grooves coincide with each other, and in the middle stopper of the sleeve, a bar guide groove that narrows in diameter is formed to guide the tip of the reinforcing bar easily. While the retracting is completed, the rebar is fixed so that the flow does not occur in the transverse direction so that the rebar is kept straight with respect to the central axis in parallel with the hemispherical protrusion.

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

1 to 8 are a perspective view and a cross-sectional view according to a first embodiment of the present invention of the present invention.

According to the drawings, the first embodiment of the present invention is a pair of blotting pieces (4) and a pair of knitting members (5) and a pair of elastic rings consisting of one sleeve (2) and three sets It is composed of (6) and a pair of fastening bolts (3) is characterized by providing a reinforcing bar connector for connecting the two reinforcing bars (1, 1a) simply and firmly, and completely remove the slip of the joint.

The sleeve 2 has a cylindrical shape and has an intermediate stopper 21 having a polygonal cross section and a center in the axial direction of the inner surface of the outer surface of which is fastened with a tool such as a spanner to control the insertion limit of the reinforcing bar. As a circular groove shape, a circular reinforcing guide groove 24 formed of a taper having an inner diameter smaller toward the inside is formed to guide the insertion of the reinforcing bar, and the end of the reinforcing bar is interlocked to cooperate with the following tailstock 21a to reinforce the sleeve. Since the cross section is not perpendicular to the axis because the rebar is cut by the press cutting machine, if the bottom surface of the intermediate stopper 21 is flat, the inserted rebar is inclined with respect to the center axis and the rebar is Straightness with the sleeve is not maintained, but the apex part 21a protruding in a hemispherical shape is formed at the center of the intermediate stopper 21 and the apex Maintaining the sleeve and the straight contact with only the center of the end face reinforcement and also serves to reduce friction resistance during the rotation of the rebar. In addition, an internal thread portion 22 is formed on the inner surface of the sleeve 2 to be screwed with the male thread portion 32 of the tightening bolt 3 to be described later, and both ends of the inner surface of the sleeve 2 facilitate the insertion of the tightening bolt 3. The improved part 23 is formed.

In the lateral direction, both the inner and outer surfaces are circular arc-shaped, and in the longitudinal direction, one side of the outer surface is formed with a tapered surface 41 formed of a taper, and the surfaces thereof connected to each other are parallel parallel surfaces 42. The inner surface of the tapered surface 41 and the parallel surface 42 is the same curved surface as the outer circumferential surface of the reinforcing bar to be in contact with the outer circumferential surface of the reinforcing bar, and the end of the sawtooth point is sharp and sharp engaging portion 43 is formed to form the outer circumferential surface of the rebar. Coupling while squeezing and engaging and extending in the longitudinal direction on the parallel surface 42 is formed a coupling portion 44 is thinner and is fixed by the support of the support portion 52 of the knitted coupling member 5 to be described later Coupling protrusions 45 extending in the longitudinal direction and protruding inward and outward directions are formed in the coupling part 44 to be engaged with and fixed to the ring support part 55 of the knitted coupling member 5 to be described later. 44) and across the engaging protrusion 45 Is formed with a cut-out portion 46 is cut away to be fitted facing fixed to the fixing protrusion 53 of the sum member 5 engaging piece, which will be described later.

The knitting coupling member 5 is an elastic material in the form of a circular band and is formed by a semicircular expansion and contraction portion 51 in which three portions protrude outwards at intervals of 120 degrees and are pressed by a tightening bolt 3 to be described later. The stretchable body 4 is easily stretched so as not to be impeded to press the outer circumferential surface of the reinforcing bar, and the portion connecting the stretchable part 51 to the support part 52 of the coupling portion 44 of the tacked body 4 is supported. A fixing protrusion 53 is formed to support the inner surface and the two protruding outward side-by-side sides are formed in the middle portion, and a fixing jaw 54 is formed at an end thereof to be curved outwardly. It is fitted to the fixing protrusion 53 and the fixing jaw 54 presses the coupling portion 44 so that the three pressing pieces 4 are evenly spaced so as to evenly press the outer circumferential surface of the reinforcing bar in three directions. And do not separate during A ring support portion 55 projecting from the support portion 52 consisting of three parts extending in the longitudinal direction is formed below the elastic ring 6 is fitted to the outer surface is seated.

The elastic ring 6 is formed of a material having elasticity in the form of a circular band to be seated on the outer surface of the ring support part 55 of the knitted coupling member 5 and the tightening bolt 3 to be described later in the sleeve 2 In the initial stage of fastening, the pressing member 4 is pressed in the direction of the outer circumferential surface of the reinforcing bar, so that the engaging projection 45 of the pressing member 4 does not come into contact with the intermediate stopper 21 of the sleeve 2. The pressing piece 4 is pushed only in the direction of the center axis of the reinforcing bar so that the engaging portion of the holding piece can be engaged by digging into the outer circumferential surface of the reinforcing bar. The presser piece 4 continues to move toward the middle stopper 21 of the sleeve 2, but the reinforcing bars 1 and 1a are tightened even when they are no longer advanced by the tailstock 21a of the sleeve 2. If the bolt 3 is continued to be tightened, the reinforcing bars 1 and 1a will end up in both ends. The same action as pulling is applied to the same effect that the initial tension is already applied to the connected reinforcing bar, and the external tension load acts on the joint after construction, so that almost no slip phenomenon occurs and is the core technology of the present invention.

The tightening bolt (3) is cylindrical and the outer side is made of a head 33 having a polygonal cross section so as to be fastened with a tool such as a spanner, the male screw 32 is connected to the head 33 Is formed is fastened to the female threaded portion 22 of the sleeve 2 and the inner diameter of the portion where the opening of the inner surface of the head portion 33 is larger than the diameter of the reinforcing bar is connected and the three are composed of a pair coupling member ( 5) a taper having a diameter smaller than the distal end of the tapered surface 41 of the blotter piece 4 integrated with the taper surface 41 having the same inclination angle as that of the tapered face 41 of the blotter piece 4 while gradually increasing in diameter. The tapered surface 31 is formed, and the female screw part 22 which is axially parallel to the tapered surface 31 is formed. In addition, the edge surface at which the opening of the inner surface of the head part 33 starts is formed with an improved part 35 to facilitate the insertion of the reinforcing bar, and the side of the head part 33 is screwed into the sleeve 2 and the direction in which it is released The construction guide marking that displays the standard of the reinforcing bars to be displayed is formed to allow convenient and quick construction.

Referring to the coupling method and the effect according to the configuration of the first embodiment of the present invention as follows.

First, prepare the reinforcing bar connection by joining the reinforcing bar connectors in one piece. To this end, the three blotting pieces 4 are fixed to one piece coupling member 5, and the cutouts 46 of the blotting pieces 4 are inserted into the fixing projections 53 of the piece coupling pieces 5, respectively. By the fixing jaw (54) of the fastening member (5) is coupled to the push piece body 4 is not easily separated by the normal external force and the elastic ring (6) ring support portion 55 of the knitting member (5) It is integrated into the other, and the three tack member (4) and the elastic ring (6) to the other one coupling member in the same way. Subsequently, the integrated piece coupling member 5, the blotting piece 4, and the elastic ring 6 are inserted into both sides of the sleeve 2, respectively, and a pair of tightening bolts 3 are installed on the sleeve 2. Loosely fastened to both female threaded portions 22, respectively, and provided with a reinforcing bar connector integrated into one.

Next, the ends of the two reinforcing bars (1, 1a) to be connected to each other from the through hole inlet of the tightening bolt (3) into the inside, so that the front end portion is in contact with the tailing portion (21a) of the intermediate stopper 21 of the sleeve (2) Push it all the way in. Subsequently, when the pair of tightening bolts 3 are fastened, in the initial stage of fastening, as shown in FIG. 4, the tapered surface 31 of the tightening bolts 3 presses the tapered surface 41 of the tacking piece 4 to be elastic. Due to the resistance of the ring 6, the blotter piece 4 is easily contacted in the circular center direction by the elastic part 51 of the knitting member 5 without contacting the intermediate stopper 21 of the sleeve 2. The reinforcing bar 4 is not moved any further in the direction of the middle stopper 21 of the sleeve 2 and moves only in the direction perpendicular to the center axis of the reinforcing bars 1 and 1a, i.e., in the direction of the center axis of the reinforcing bar. 1, 1a) is pressed and the sharp end of the toothed engaging portion 43 of the tacking piece 4 is engaged by digging into the outer circumferential surface of the reinforcing bar, and as shown in FIG. 5, the tightening bolt 3 is continued. When tightened, the elastic ring is contracted and the blotting piece 4 closely coupled with the reinforcing bar together with the intermediate stopper 21 of the sleeve 2 If the tip of the reinforcing bar proceeds finely to the incense and is completely in close contact with the tailstock part 21a of the intermediate stopper 21 and no longer proceeds, the blotter piece 4 penetrates the outer circumferential surface of the reinforcing bar more deeply. The same effect as pulling in the direction occurs, and the same effect as removing the fine play of the joint by applying tensile load to the rebar in advance, so that no slip phenomenon occurs at the joint even if external tensile load is applied after construction. By preventing the cracking of the concrete from the seam, it is possible to prevent the collapse of the structure.

9 to 13 are a perspective view and a cross-sectional view according to a second embodiment of the present invention.

According to the drawings, the second embodiment of the present invention is a pair of blotting pieces (4a) and a pair of piece coupling member (5a) and a pair of elastic rings of one sleeve (2) and three sets (6) and a pair of tightening bolts (3), the basic structure of which is the same as the first embodiment of the present invention, only the shape of the knitting member (5a) and the blotting piece (4a) is characterized to be.

The knitting coupling member 5a has an elastic material in the form of a circular band, and elastic portions 51a having three elastic portions protruding outwards are formed at intervals of 120 degrees so that the fastening bolts 3 are formed on the holding paper body 4a. Is not impeded to press the outer circumferential surface of the reinforcing bar, and the fixing jaw 54a is formed in which two corner portions of the stretchable portion 51a protrude in the transverse direction, so that the engaging portion 44 of the tack member 4a is fixed and held. Arrange three pieces 4a at equal intervals so as to evenly press the outer circumferential surface of the reinforcing bar in three directions, and the support portion 52 connecting the expansion and contraction portions 51 is an engaging portion 44 of the blotting piece 4a. Ring support portion 55 is formed to protrude in the longitudinal direction in the support portion 52 consisting of the three parts and the elastic ring 6 is fitted to the outer surface.

The structure of the blotting paper 4a is the same as that of the blotting paper 4 of the first embodiment of the present invention, and the cutout 46 is cut in the longitudinal direction over the coupling part 44 and the coupling protrusion 45. It is characterized in that the coupling part 44 is coupled to the support member 52 of the piece coupling member 5a while being coupled to each other by the fixing jaw 54a.

Coupling method according to the configuration of the second embodiment of the present invention and the effect is the same as the first embodiment of the present invention.

14 to 15 are a perspective view and a cross-sectional view according to a third embodiment of the present invention.

According to the drawings, according to the third embodiment of the present invention, one pair of squeezing bodies 4a and three pairs of fasteners 5b and one pair of fastening bolts are formed of one sleeve 2 and three pairs. It is composed of (3) and its basic structure is the same as the second embodiment of the present invention, and is characterized in that the knitting coupling member 5b is provided with only the coupling body and the elastic ring are integrated.

The knitting coupling member 5b is formed in such a way that the elastic ring 6 is integrally coupled to the ring supporting portion 55 of the knitting coupling member 5a in the second embodiment so that the ring supporting portion 55a is formed. Is made of a material having elasticity and is provided by combining the unique working effects of the knitted coupling member and the elastic ring.

Coupling method according to the configuration of the third embodiment of the present invention and the effect is the same as the first embodiment of the present invention.

16 to 18 are a perspective view and a cross-sectional view according to a fourth embodiment of the present invention.

According to the drawings, according to the fourth embodiment of the present invention, one sleeve 2a and three pairs of pliable pieces 4a, one pair of piece coupling members 5c, and one pair of elastic rings (6) and the tightening bolt (3a) and the tightening nut (3b) and the basic structure is the same as the second embodiment of the present invention, only the shape of the sleeve (2a) and the coupling member (5c) is different Another feature is that the reinforcing bar is connected by pressing the pressing member 4a with the fastening bolt 3a and the fastening nut 3b.

The sleeve 2a has a cylindrical shape and its outer diameter is smaller than the inner diameter of the tightening bolt 3a. The sleeve 2a is formed in the through hole of the tightening bolt 3a, and an intermediate stopper 21 is formed in which the center of the axial direction of the inner surface is blocked. Rebar guide groove 24 made of a circular groove made of a tapered taper that decreases in diameter as it goes to the inside and controls its limits. Remove the and the parallel reinforcement inserted in parallel with the tailstock portion (21a) and the straightness and the center axis of the sleeve (2a) coincided with the hemisphere protruding in the center of the intermediate stopper (21) is formed in the tailstock portion (21a) When the center of the end face of the reinforcing bar is in contact with the apex in the form of a point, friction is caused when the tacking piece 4a is rotated by the tightening bolt 3a and the tightening nut 3b, and the reinforcing bar that is engaged with the plunging piece 4a rotates. Reduce resistance In order to ensure smooth fastening and sufficient fastening, in most cases, the cross section of the rebar cut by the press cutter is not perpendicular to the center axis line. In this case, the rebar is kept straight with respect to the middle axis of the sleeve 2a. The inner surface of both ends is formed with a locking projection (25) protruding in the direction of the center, the engaging projection 45 and the elastic ring (6) of the tack piece (4a) is fitted.

The knitting coupling member 5c is an elastic material in the form of a circular band, and is stretchable when elastic members 51b are formed to protrude outward at intervals of 120 degrees and are pressed by the fastening bolts 3a and the fastening nuts 3b. By maintaining the three pieces at even intervals, the paper sheet 4a is not impeded to press the outer circumferential surface of the reinforcing bar, and at the same time, the paper sheet 4a is squeezed evenly in three directions to stabilize the outer circumferential surface of the reinforcing bar. The portion connecting the expansion and contraction portion 51b serves to support the inner surface of the coupling portion 44 of the blotter piece 4a as the support portion 52.

The tightening bolt (3a) is the same structure as the tightening bolt (3) of the first embodiment of the present invention, the length of the male screw portion 32 is longer and is fastened with the tightening nut (3b) to be described later and the inner through the Another feature is that the sleeve 2a is inherent and the head 33 of the outer surface is formed with a spline 36 protruding in the axial direction to be fastened with a tool such as a pipe wrench.

The tightening nut (3b) is cylindrical, the outer surface is formed with a spline (36a) protruding in the axial direction to be fastened with a tool such as pipe wrench, one side of the inner surface is larger than the diameter of the reinforcing bar to be connected and the three The taper surface 41 of the blotter piece 4a is made of a smaller diameter than the tip of the tapered face 41 of the blotter piece 4a integrated by the knitting member 5c, and gradually increases in diameter. The tapered surface 31a having the same inclination angle as) is formed and the female screw portion 37 is formed with the stepped portion in contact with the tapered surface 31a to be fastened with the male screw portion 32 of the tightening bolt 3a and tapered. The corner of the inner surface where the surface 31a starts is formed with an improved portion 35a to facilitate the insertion of the rebar.

Coupling method according to the configuration of the fourth embodiment of the present invention and the effects are as follows.

First prepare the reinforcing bar connections by joining the reinforcing bar connectors in one piece. The elastic ring 6 is seated inside both sides of the sleeve 2a, and each of the three blotting pieces 4a is coupled to a pair of piece coupling members 5c to be installed inside both sides of the sleeve 2a to be integrated. It is inserted into the inside of the tightening bolt (3a) and loosely tighten the tightening nut (3b) to the tightening bolt (3a) is provided with a reinforcing bar connector integrated into one.

Next, the ends of the two reinforcing bars are inserted into the through holes of the fastening bolts 3a and the fastening nuts 3b, respectively, and the front end portions are in contact with the tailstock 21a of the intermediate stopper 21 of the sleeve 2a.

Although not shown, the blotter body and the body coupling member may be applied by being replaced by the tack body and the body coupling member of the first to third embodiments of the present invention, and the effect thereof is also the same.

In the fourth embodiment of the present invention described above, the effect of the firm coupling and the slip of the joint portion by the elastic portion 51b and the elastic ring 6 of the knitted coupling member 5c is eliminated. Same as the example.

19 to 20 are a perspective view and a cross-sectional view according to a fifth embodiment of the present invention.

According to the drawings, the fifth embodiment of the present invention has the same basic structure as that of the first embodiment of the present invention, and only one side of the sleeve 2b is formed based on the intermediate stopper 21 and the intermediate stopper Plate nut (7) in the form of a flange nut is coupled to the side of the (21), and there is a clamping body (4), a coupling member (5) and an elastic ring (6), which consist of a set of three inside, and a tightening bolt ( 3) is fastened to the other end, in the process of reinforcement of the reinforced concrete structure by coupling to the tip of the reinforcement to be fixed to the center of the column reinforcement in the conventional manner the end of the reinforcing bar in the vertical manner behaves the same function as the anchoring bent vertically.

21 to 22 are a perspective view and a cross-sectional view according to a sixth embodiment of the present invention.

According to the drawings, the sixth embodiment of the present invention is the basic structure is the same as the first embodiment of the present invention, only one side of the sleeve (2c) plate 7a is integrally coupled and three inside Another feature is that the blotting paper 4, the coupling member 5, and the elastic ring 6, which consist of a pair, are fastened with a tightening bolt 3, and the reinforced concrete work is carried out step by step. It is applied to secure the reinforcement to the formwork for the plate (7a) is formed in the center hole having a diameter greater than the inner diameter of the sleeve (2c) and nail holes to be fixed by nailing the formwork at all four corners Is formed.

23 to 24 are a perspective view and a cross-sectional view according to a seventh embodiment of the present invention.

According to the drawings, the seventh embodiment of the present invention has the same basic structure as that of the first embodiment of the present invention, and only one side of the sleeve 2d based on the intermediate stopper 21 is formed The improvement part 23a is formed in the outer edge of the stopper 21 direction, and it has the clamping body 4 which consists of a set of three inside, the coupling member 5, and the elastic ring 6, and tightening bolt 3 In another embodiment, the coupling method includes an blotting piece 4, a knitting member 5, and an elastic ring 6 inside the sleeve 2d and loosely tightened with a fastening bolt to improve the portion (2). 23a) is welded to the H-beam 9j, and the reinforcing bar 1 is inserted into the tightening bolt 3 and the tightening bolt 3 is completely tightened to directly weld the rebar to the H-beam 8. It is easier to weld and the weld is firm.

In the fifth embodiment, the sixth embodiment, and the seventh embodiment of the present invention, the blotting piece and the knitting member are replaced with the blotting piece and the knitting piece of the second to third embodiments of the present invention. It can be applied and the effect is the same.

In the above embodiments of the present invention, the outer surface of the sleeve, the tightening bolt and the tightening nut may be formed in various shapes such as a polygonal section or a spline so as to be fastened with a tool, and the male threaded portion of the sleeve and the tightening bolt may be tightened and tightened. The female thread of the nut can be variously formed by more than one thread or two threads.

Although the present invention has been described with reference to various preferred embodiments, the present invention is not limited thereto, and various modifications may be made by those skilled in the art to which the present invention pertains within the technical scope of the present invention. Although the technical idea is the same as the present invention, the present invention is not only applied to the connection of reinforcing bars, it is obvious that it can be used in various ways, such as connection of steel bars and pipes.

As described above, according to the present invention, by providing a reinforcing bar connector for connecting the reinforcing bars simply and securely by inserting the reinforcing bar or bar of various forms into the inlet of both ends of the reinforcing bar connector integrated into one and completely tightening the tightening bolt to the sleeve , The expansion and contraction portion is formed on the knitting coupling member so that the blowing body is not resisted and the outer circumferential surface of the reinforcing bar is equally squeezed in three directions to ensure a stable coupling. In the early stage of tightening, the outer circumferential surface of the reinforcing bar is pushed. In the finalizing stage, the squeezing body engaged with the rebar is moved further toward the center of the sleeve, and the reinforcing bar and the squeezing body are tightly coupled. The same action as pulling in the direction Prevents cracking of concrete from the surroundings of the joint, and forms reinforcing bar guide grooves in the sleeve to guide the leading end of the reinforcing bars easily. The core is formed at the center of the reinforcing guide groove of the sleeve, and when the tightening bolt is fastened, the reinforcing bar integrally engages with the presser body to facilitate the fastening operation. Make sure that the center of the two reinforcing bars coincide with each other by touching the center of the.

As such, the present invention provides reinforcing bar connectors with both easy construction of rebar connection and applicability to connect various reinforcing bars by accepting all of the deviations of the same diameter reinforcing bars, and safety that almost no residual strain occurs at the joints. do.

Claims (16)

The sleeve and the cross section of which an intermediate stopper is formed inside are arc-shaped, and the inner surface is provided with a tooth-shaped engaging portion, and the outer surface is tapered surface formed of a pair of two or more tapered surfaces and the tapered surface in the longitudinal direction on the inner surface. In the reinforcing bar connector formed of a fastening means is formed and screwed to the sleeve, It is made of an elastic material in the form of a band, and a plurality of stretchable stretchable portions are formed at regular intervals, and the one side of the longitudinal coupling member and the coupling material for integrally combining the two or more blotting pieces and the elastic material Reinforcing bar connector, characterized in that it comprises an elastic ring which is installed on the inside of the sleeve is located on the opposite side of the tack piece. According to claim 1, wherein the female threaded portion is formed on the inner surface of the sleeve and the fastening means for screwing the sleeve is provided with a tightening bolt is formed by connecting the male threaded portion and the head in the longitudinal direction on the outer surface, the intermediate stopper 21 of the sleeve Reinforcing bar guide groove 24 is formed to decrease the inner diameter toward the inside to guide and fix the insertion of the reinforcing bar is formed in the center of the intermediate stopper 21 is formed in the hemisphere protruding tail pressure portion (21a) Reinforcing bar connector characterized in that the reinforcing bar is in line with the center axis of the sleeve by contacting the center of the side surface and to reduce the frictional resistance during rotation of the rebar. 3. The coupling portion 44 according to claim 2, wherein a coupling portion 44 extending in the longitudinal direction and thinning at a thick end portion of the blotter piece 4a is formed and protrudes inward and outward from an end of the coupling portion 44. A projection 45 is formed, and the knitting coupling member 5a is formed with elastic members 51a protruding outward at regular intervals, and fixing jaw 54a is formed at two corner portions of the elastic members 51a. The coupling portion 44 of the blotting paper body 4a is fixed, and a ring support portion 55 protruding in the longitudinal direction is formed in the support portion 52 connecting the elastic portions 51a to the elastic ring 6. Reinforcing bar connector characterized in that it is fitted on this outer surface. 3. The joint portion 44 according to claim 2, wherein a coupling portion 44 extending in the longitudinal direction to become thinner at the thicker end of the blotter piece 4a is formed and extends in the longitudinal direction in the coupling portion 44 in the inner and outer directions. A protruding coupling protrusion 45 is formed, and the knitted coupling member 5b has elastic members 51a protruding outward at regular intervals, and fixed jaw 54a at two corner portions of the elastic members 51a. Is formed so that the engaging portion 44 of the blotter piece 4a is fixed and extends in the longitudinal direction to the supporting portion 52 connecting the elastic portions 51a so that the ring support portion is integrally coupled to the elastic ring. Reinforcing bar connector, characterized in that 55a) is formed. 3. The joint portion 44 according to claim 2, wherein a coupling portion 44 that extends in the longitudinal direction and becomes thinner is formed at the thick end of the blotter piece 4, and extends longitudinally in the coupling portion 44 in the inner and outer directions. A protruding coupling protrusion 45 is formed, and a cutout 46 is formed in the longitudinal direction over the coupling portion 44 and the coupling protrusion 45, and the knitted coupling member 5 is formed at regular intervals. Stretching portion 51 is formed to protrude outwardly is formed in the middle of the support portion 52 for connecting the expansion and contraction portion 51 is formed with a fixing projection 53 protruding outward side by side parallel to the end portion A fixed jaw 54 is formed to be bent so that the cutout portion 46 of the blotting piece 4 is fitted into the fixing projection 53, and the fixing jaw 54 opens the coupling portion 44 of the blotting piece 4. Fixed and extending in the longitudinal direction to the support portion 52 protruding ring support portion 55 is formed so that the elastic ring 6 is fitted to the outer surface to be seated Reinforced connector as claimed. The method according to claim 3 or 5, wherein three blotting pieces (4, 4a) are respectively coupled to the support portions (52) of the pair of piece coupling members (5, 5a), and an elastic ring (50) is provided on the ring support portion (55). Reinforcing bar connector characterized in that 6) is coupled to the inside of both sides of the sleeve (2) and a pair of fastening bolts (3) to the sleeve (2) provided as one component. The method according to claim 4, wherein each of the three blotting pieces (4a) is joined to the support portion (52) of the pair of piece coupling members (5b) to be introduced into both sides of the sleeve (2), and a pair of tightening bolts (3). Rebar connector characterized in that the fastening to the sleeve (2) provided as a single part. A cylindrical sleeve with an intermediate stopper formed therein and an arcuate section having a circular cross section, and a tooth-like engaging portion is formed on the inner surface, and at least two plunger pieces having a tapered surface formed in the longitudinal direction on the outer surface and a male thread portion are formed on the outer surface. In the reinforcing bar connector consisting of a tightening bolt having a tapered surface formed in the longitudinal direction on the inner surface and a tapered surface formed in the longitudinal direction on one side of the inner surface and a tightening nut for fastening the tightening bolts with female threads formed on the other side, It is made of an elastic material in the form of a band, and a plurality of stretchable elastic portions are formed at regular intervals, and a knitted coupling member which integrally couples the two or more blotting pieces and an elastic material in the form of a band, Reinforcing bar connector, characterized in that it comprises an elastic ring which is located on the opposite side to which the knitted body is coupled to the inside of the sleeve. 9. The reinforcing bar guide groove according to claim 8, wherein the outer diameter of the sleeve 2a is smaller than the inner diameter of the tightening bolt 3a, which is inherent in the through hole of the tightening bolt 3a and becomes smaller in diameter toward the intermediate stopper 21. (24) there is guided to the insertion of the reinforcement of the reinforcement, and the center of the intermediate stopper 21 is formed in the hemisphere protruding tail pressure portion (21a) is formed so that the center of the end face of the reinforcing bar in the form of a point In order to reduce the frictional resistance during the rotation of the inner surface of both ends is formed with a locking projection (25) protruding in the direction of the center, the engaging projection 45 and the elastic ring (6) of the tack member (4a) therein Rebar connector, characterized in that to be seated. 10. The method according to claim 3 or 4 or 5 or 9, wherein the improvement parts 35 and 35a are formed at the edges of the through holes of the tightening bolts 3 and 3a and the tightening nut 3b and the sleeve 2a. The improvement part 23 is formed in the edge of the through-hole inlet of both ends, and the direction of screw fastening and the direction of loosening to the side of the head part 33 of the fastening bolts 3 and 3a is displayed, and the construction of the reinforcing bar is displayed. Reinforcing bar connector, characterized in that the guide display 34 is formed. 10. The method according to claim 3 or 4 or 5 or 9, characterized in that the heads of the tightening bolts (3, 3a) and the outer surfaces of the tightening nuts (3b) and the sleeve (2) are polygonal in cross section. Rebar connector. 10. The method according to claim 3 or 4 or 5 or 9, characterized in that a spline is formed on the head of the tightening bolts (3, 3a), the outer surface of the tightening nut (3b) and the sleeve (2). Rebar connector. Rebar connector according to claim 3, 4 or 5, characterized in that the plate nut (7) is integrally formed on one side of the sleeve (2b). Rebar connector according to claim 3 or 4 or 5, characterized in that the plate (7a) is integrally formed with one side of the sleeve (2c). Rebar connector according to claim 3 or 4 or 5, characterized in that an improvement (23a) is formed at an outer edge of one side of the sleeve (2d) so as to be welded to the H beam or the like. 10. Rebar connector according to claim 3 or 4 or 5 or 9, characterized in that the threaded portion of the sleeve, the tightening bolt and the tightening nut is formed by at least one line screw.

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